3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
4 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
14 #if defined(__HP_cc) || defined(__HP_aCC)
15 /* The HPUX compiler for Itanium is very picky and warns about
16 * things that gcc doesn't and that we would prefer it does not.
17 * So on that platform silence certain warnings unlaterally. */
19 /* silence "relational operator ">" always evaluates to 'false'"
20 * warnings. We get a LOT of these from the memwrap checks. */
21 #pragma diag_suppress 4276
23 /* silence "may cause misaligned access" warnings from our "OO in C"
24 * type logic. we do this a lot and if it was broken we would fail tests
25 * all over the place */
26 #pragma diag_suppress 4232
28 #endif /* end HPUX warning disablement */
32 * This file is being used for x2p stuff.
33 * Above symbol is defined via -D in 'x2p/Makefile.SH'
34 * Decouple x2p stuff from some of perls more extreme eccentricities.
39 #endif /* PERL_FOR_X2P */
43 /* This fakes up using Mingw for locale handling. In order to not define WIN32
44 * in this file (and hence throughout the code that isn't expecting it), this
45 * doesn't define that, but defines the appropriate things that would otherwise
46 * be defined later in the file. Hence those and here must be kept in sync */
47 #ifdef WIN32_USE_FAKE_OLD_MINGW_LOCALES
48 # define UINT unsigned int
49 # undef USE_THREAD_SAFE_LOCALE
50 # define NO_POSIX_2008_LOCALE
51 # undef HAS_NL_LANGINFO
52 # undef HAS_NL_LANGINFO_L
55 # define TS_W32_BROKEN_LOCALECONV
57 # define EMULATE_THREAD_SAFE_LOCALES
63 =for apidoc_section $debugging
64 =for apidoc CmnW ||comma_aDEPTH
65 Some functions when compiled under DEBUGGING take an extra final argument named
66 C<depth>, indicating the C stack depth. This argument is omitted otherwise.
67 This macro expands to either S<C<, depth>> under DEBUGGING, or to nothing at
68 all when not under DEBUGGING, reducing the number of C<#ifdef>'s in the code.
70 The program is responsible for maintaining the correct value for C<depth>.
72 =for apidoc CyW ||comma_pDEPTH
73 This is used in the prototype declarations for functions that take a L</C<comma_aDEPTH>>
74 final parameter, much like L<C<pTHX_>|perlguts/Background and MULTIPLICITY>
75 is used in functions that take a thread context initial parameter.
77 =for apidoc CmnW ||debug_aDEPTH
78 Same as L</C<comma_aDEPTH>> but with no leading argument. Intended for functions with
79 no normal arguments, and used by L</C<comma_aDEPTH>> itself.
81 =for apidoc CmnW ||debug_pDEPTH
82 Same as L</C<comma_pDEPTH>> but with no leading argument. Intended for functions with
83 no normal arguments, and used by L</C<comma_pDEPTH>> itself.
89 # define debug_pDEPTH U32 depth
90 # define comma_pDEPTH ,debug_pDEPTH
91 # define debug_aDEPTH depth
92 # define comma_aDEPTH ,debug_aDEPTH
100 /* NOTE 1: that with gcc -std=c89 the __STDC_VERSION__ is *not* defined
101 * because the __STDC_VERSION__ became a thing only with C90. Therefore,
102 * with gcc, HAS_C99 will never become true as long as we use -std=c89.
104 * NOTE 2: headers lie. Do not expect that if HAS_C99 gets to be true,
105 * all the C99 features are there and are correct. */
106 #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \
107 defined(_STDC_C99) || defined(__c99)
111 /* =========================================================================
112 * The defines from here to the following ===== line are unfortunately
113 * duplicated in makedef.pl, and changes here MUST also be made there */
115 /* See L<perlguts/"The Perl API"> for detailed notes on
116 * MULTIPLICITY and PERL_IMPLICIT_SYS */
119 # if !defined(MULTIPLICITY)
120 # define MULTIPLICITY
124 /* PERL_IMPLICIT_CONTEXT is a legacy synonym for MULTIPLICITY */
125 #if defined(MULTIPLICITY) \
126 && ! defined(PERL_CORE) \
127 && ! defined(PERL_IMPLICIT_CONTEXT)
128 # define PERL_IMPLICIT_CONTEXT
130 #if defined(PERL_IMPLICIT_CONTEXT) && !defined(MULTIPLICITY)
131 # define MULTIPLICITY
133 #if defined(PERL_CORE) && defined(PERL_IMPLICIT_CONTEXT)
134 # pragma message("PERL_IMPLICIT_CONTEXT was removed from core perl. It does not do anything. Undeffing it for compilation")
135 # undef PERL_IMPLICIT_CONTEXT
138 /* undef WIN32 when building on Cygwin (for libwin32) - gph */
144 /* Use the reentrant APIs like localtime_r and getpwent_r */
145 /* Win32 has naturally threadsafe libraries, no need to use any _r variants.
146 * XXX KEEP makedef.pl copy of this code in sync */
147 #if defined(USE_ITHREADS) && !defined(USE_REENTRANT_API) && !defined(WIN32)
148 # define USE_REENTRANT_API
151 /* end of makedef.pl logic duplication. But there are other groups below.
152 * ========================================================================= */
155 =for apidoc_section $directives
156 =for apidoc AmnUu|void|EXTERN_C
157 When not compiling using C++, expands to nothing.
158 Otherwise is used in a declaration of a function to indicate the function
159 should have external C linkage. This is required for things to work for just
160 about all functions with external linkage compiled into perl.
161 Often, you can use C<L</START_EXTERN_C>> ... C<L</END_EXTERN_C>> blocks
162 surrounding all your code that you need to have this linkage.
166 EXTERN_C int flock(int fd, int op);
168 =for apidoc Amnu||START_EXTERN_C
169 When not compiling using C++, expands to nothing.
170 Otherwise begins a section of code in which every function will effectively
171 have C<L</EXTERN_C>> applied to it, that is to have external C linkage. The
172 section is ended by a C<L</END_EXTERN_C>>.
174 =for apidoc Amnu||END_EXTERN_C
175 When not compiling using C++, expands to nothing.
176 Otherwise ends a section of code already begun by a C<L</START_EXTERN_C>>.
181 #undef START_EXTERN_C
185 # define EXTERN_C extern "C"
186 # define START_EXTERN_C EXTERN_C {
187 # define END_EXTERN_C }
189 # define START_EXTERN_C
190 # define END_EXTERN_C
191 # define EXTERN_C extern
194 /* Fallback definitions in case we don't have definitions from config.h.
195 This should only matter for systems that don't use Configure and
196 haven't been modified to define PERL_STATIC_INLINE yet.
198 #if !defined(PERL_STATIC_INLINE)
199 # ifdef HAS_STATIC_INLINE
200 # define PERL_STATIC_INLINE static inline
202 # define PERL_STATIC_INLINE static
207 =for apidoc_section $concurrency
208 =for apidoc AmU|void|dTHXa|PerlInterpreter * a
209 On threaded perls, set C<pTHX> to C<a>; on unthreaded perls, do nothing
211 =for apidoc AmU|void|dTHXoa|PerlInterpreter * a
212 Now a synonym for C<L</dTHXa>>.
218 # define tTHX PerlInterpreter*
219 # define pTHX tTHX my_perl PERL_UNUSED_DECL
220 # define aTHX my_perl
221 # define aTHXa(a) aTHX = (tTHX)a
222 # define dTHXa(a) pTHX = (tTHX)a
223 # define dTHX pTHX = PERL_GET_THX
236 # if defined(DEBUGGING) && !defined(PERL_TRACK_MEMPOOL)
237 # define PERL_TRACK_MEMPOOL
240 # undef PERL_TRACK_MEMPOOL
244 # define dTHX_DEBUGGING dTHX
246 # define dTHX_DEBUGGING dNOOP
249 #define STATIC static
252 /* Do not use these macros. They were part of PERL_OBJECT, which was an
253 * implementation of multiplicity using C++ objects. They have been left
254 * here solely for the sake of XS code which has incorrectly
257 * The only one Devel::PPPort handles is this; list it as deprecated
259 =for apidoc_section $concurrency
260 =for apidoc AmD|void|CPERLscope|void x
265 # define CPERLscope(x) x
266 # define CPERLarg void
269 # define PERL_OBJECT_THIS
270 # define _PERL_OBJECT_THIS
271 # define PERL_OBJECT_THIS_
272 # define CALL_FPTR(fptr) (*fptr)
273 # define MEMBER_TO_FPTR(name) name
274 #endif /* !PERL_CORE */
276 #define CALLRUNOPS PL_runops
278 #define CALLREGCOMP(sv, flags) Perl_pregcomp(aTHX_ (sv),(flags))
280 #define CALLREGCOMP_ENG(prog, sv, flags) (prog)->comp(aTHX_ sv, flags)
281 #define CALLREGEXEC(prog,stringarg,strend,strbeg,minend,sv,data,flags) \
282 RX_ENGINE(prog)->exec(aTHX_ (prog),(stringarg),(strend), \
283 (strbeg),(minend),(sv),(data),(flags))
284 #define CALLREG_INTUIT_START(prog,sv,strbeg,strpos,strend,flags,data) \
285 RX_ENGINE(prog)->intuit(aTHX_ (prog), (sv), (strbeg), (strpos), \
286 (strend),(flags),(data))
287 #define CALLREG_INTUIT_STRING(prog) \
288 RX_ENGINE(prog)->checkstr(aTHX_ (prog))
290 #define CALLREGFREE(prog) \
291 Perl_pregfree(aTHX_ (prog))
293 #define CALLREGFREE_PVT(prog) \
294 if(prog && RX_ENGINE(prog)) RX_ENGINE(prog)->rxfree(aTHX_ (prog))
296 #define CALLREG_NUMBUF_FETCH(rx,paren,usesv) \
297 RX_ENGINE(rx)->numbered_buff_FETCH(aTHX_ (rx),(paren),(usesv))
299 #define CALLREG_NUMBUF_STORE(rx,paren,value) \
300 RX_ENGINE(rx)->numbered_buff_STORE(aTHX_ (rx),(paren),(value))
302 #define CALLREG_NUMBUF_LENGTH(rx,sv,paren) \
303 RX_ENGINE(rx)->numbered_buff_LENGTH(aTHX_ (rx),(sv),(paren))
305 #define CALLREG_NAMED_BUFF_FETCH(rx, key, flags) \
306 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_FETCH))
308 #define CALLREG_NAMED_BUFF_STORE(rx, key, value, flags) \
309 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), (value), ((flags) | RXapif_STORE))
311 #define CALLREG_NAMED_BUFF_DELETE(rx, key, flags) \
312 RX_ENGINE(rx)->named_buff(aTHX_ (rx),(key), NULL, ((flags) | RXapif_DELETE))
314 #define CALLREG_NAMED_BUFF_CLEAR(rx, flags) \
315 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_CLEAR))
317 #define CALLREG_NAMED_BUFF_EXISTS(rx, key, flags) \
318 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_EXISTS))
320 #define CALLREG_NAMED_BUFF_FIRSTKEY(rx, flags) \
321 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), NULL, ((flags) | RXapif_FIRSTKEY))
323 #define CALLREG_NAMED_BUFF_NEXTKEY(rx, lastkey, flags) \
324 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), (lastkey), ((flags) | RXapif_NEXTKEY))
326 #define CALLREG_NAMED_BUFF_SCALAR(rx, flags) \
327 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_SCALAR))
329 #define CALLREG_NAMED_BUFF_COUNT(rx) \
330 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, RXapif_REGNAMES_COUNT)
332 #define CALLREG_NAMED_BUFF_ALL(rx, flags) \
333 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, flags)
335 #define CALLREG_PACKAGE(rx) \
336 RX_ENGINE(rx)->qr_package(aTHX_ (rx))
338 #if defined(USE_ITHREADS)
339 # define CALLREGDUPE(prog,param) \
340 Perl_re_dup(aTHX_ (prog),(param))
342 # define CALLREGDUPE_PVT(prog,param) \
343 (prog ? RX_ENGINE(prog)->dupe(aTHX_ (prog),(param)) \
347 /* some compilers impersonate gcc */
348 #if defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER)
349 # define PERL_IS_GCC 1
352 #define PERL_GCC_VERSION_GE(major,minor,patch) \
353 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \
354 >= ((100000 * (major)) + (1000 * (minor)) + (patch)))
355 #define PERL_GCC_VERSION_GT(major,minor,patch) \
356 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \
357 > ((100000 * (major)) + (1000 * (minor)) + (patch)))
358 #define PERL_GCC_VERSION_LE(major,minor,patch) \
359 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \
360 <= ((100000 * (major)) + (1000 * (minor)) + (patch)))
361 #define PERL_GCC_VERSION_LT(major,minor,patch) \
362 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \
363 < ((100000 * (major)) + (1000 * (minor)) + (patch)))
365 /* In case Configure was not used (we are using a "canned config"
366 * such as Win32, or a cross-compilation setup, for example) try going
367 * by the gcc major and minor versions. One useful URL is
368 * http://www.ohse.de/uwe/articles/gcc-attributes.html,
369 * but contrary to this information warn_unused_result seems
370 * not to be in gcc 3.3.5, at least. --jhi
371 * Also, when building extensions with an installed perl, this allows
372 * the user to upgrade gcc and get the right attributes, rather than
373 * relying on the list generated at Configure time. --AD
374 * Set these up now otherwise we get confused when some of the <*thread.h>
375 * includes below indirectly pull in <perlio.h> (which needs to know if we
376 * have HASATTRIBUTE_FORMAT).
379 #if defined __GNUC__ && !defined(__INTEL_COMPILER)
380 # if PERL_GCC_VERSION_GE(3,1,0)
381 # define HASATTRIBUTE_DEPRECATED
383 # if PERL_GCC_VERSION_GE(3,0,0) /* XXX Verify this version */
384 # define HASATTRIBUTE_FORMAT
385 # if defined __MINGW32__
386 # define PRINTF_FORMAT_NULL_OK
389 # if PERL_GCC_VERSION_GE(3,0,0)
390 # define HASATTRIBUTE_MALLOC
392 # if PERL_GCC_VERSION_GE(3,3,0)
393 # define HASATTRIBUTE_NONNULL
395 # if PERL_GCC_VERSION_GE(2,5,0)
396 # define HASATTRIBUTE_NORETURN
398 # if PERL_GCC_VERSION_GE(3,0,0)
399 # define HASATTRIBUTE_PURE
401 # if PERL_GCC_VERSION_GE(3,4,0)
402 # define HASATTRIBUTE_UNUSED
404 # if __GNUC__ == 3 && __GNUC_MINOR__ == 3 && !defined(__cplusplus)
405 # define HASATTRIBUTE_UNUSED /* gcc-3.3, but not g++-3.3. */
407 # if PERL_GCC_VERSION_GE(3,4,0)
408 # define HASATTRIBUTE_WARN_UNUSED_RESULT
410 /* always_inline is buggy in gcc <= 4.6 and causes compilation errors */
411 # if PERL_GCC_VERSION_GE(4,7,0)
412 # define HASATTRIBUTE_ALWAYS_INLINE
414 # if PERL_GCC_VERSION_GE(3,3,0)
415 # define HASATTRIBUTE_VISIBILITY
419 #ifdef HASATTRIBUTE_DEPRECATED
420 # define __attribute__deprecated__ __attribute__((deprecated))
422 #ifdef HASATTRIBUTE_FORMAT
423 # define __attribute__format__(x,y,z) __attribute__((format(x,y,z)))
425 #ifdef HASATTRIBUTE_MALLOC
426 # define __attribute__malloc__ __attribute__((__malloc__))
428 #ifdef HASATTRIBUTE_NONNULL
429 # define __attribute__nonnull__(a) __attribute__((nonnull(a)))
431 #ifdef HASATTRIBUTE_NORETURN
432 # define __attribute__noreturn__ __attribute__((noreturn))
434 #ifdef HASATTRIBUTE_PURE
435 # define __attribute__pure__ __attribute__((pure))
437 #ifdef HASATTRIBUTE_UNUSED
438 # define __attribute__unused__ __attribute__((unused))
440 #ifdef HASATTRIBUTE_WARN_UNUSED_RESULT
441 # define __attribute__warn_unused_result__ __attribute__((warn_unused_result))
443 #ifdef HASATTRIBUTE_ALWAYS_INLINE
444 /* always_inline is buggy in gcc <= 4.6 and causes compilation errors */
445 # if !defined(PERL_IS_GCC) || PERL_GCC_VERSION_GE(4,7,0)
446 # define __attribute__always_inline__ __attribute__((always_inline))
449 #if defined(HASATTRIBUTE_VISIBILITY) && !defined(_WIN32) && !defined(__CYGWIN__)
450 /* On Windows instead of this, we use __declspec(dllexport) and a .def file
451 * Cygwin works by exporting every global symbol, see the definition of ldflags
452 * near the end of hints/cygwin.sh and the visibility attribute doesn't appear
455 # define __attribute__visibility__(x) __attribute__((visibility(x)))
458 /* If we haven't defined the attributes yet, define them to blank. */
459 #ifndef __attribute__deprecated__
460 # define __attribute__deprecated__
462 #ifndef __attribute__format__
463 # define __attribute__format__(x,y,z)
465 #ifndef __attribute__malloc__
466 # define __attribute__malloc__
468 #ifndef __attribute__nonnull__
469 # define __attribute__nonnull__(a)
471 #ifndef __attribute__noreturn__
472 # define __attribute__noreturn__
474 #ifndef __attribute__pure__
475 # define __attribute__pure__
477 #ifndef __attribute__unused__
478 # define __attribute__unused__
480 #ifndef __attribute__warn_unused_result__
481 # define __attribute__warn_unused_result__
483 #ifndef __attribute__always_inline__
484 # define __attribute__always_inline__
486 #ifndef __attribute__visibility__
487 # define __attribute__visibility__(x)
490 /* Some OS warn on NULL format to printf */
491 #ifdef PRINTF_FORMAT_NULL_OK
492 # define __attribute__format__null_ok__(x,y,z) __attribute__format__(x,y,z)
494 # define __attribute__format__null_ok__(x,y,z)
498 * Because of backward compatibility reasons the PERL_UNUSED_DECL
499 * cannot be changed from postfix to PERL_UNUSED_DECL(x). Sigh.
501 * Note that there are C compilers such as MetroWerks CodeWarrior
502 * which do not have an "inlined" way (like the gcc __attribute__) of
503 * marking unused variables (they need e.g. a #pragma) and therefore
504 * cpp macros like PERL_UNUSED_DECL cannot work for this purpose, even
505 * if it were PERL_UNUSED_DECL(x), which it cannot be (see above).
509 =for apidoc_section $directives
510 =for apidoc AmnU||PERL_UNUSED_DECL
511 Tells the compiler that the parameter in the function prototype just before it
512 is not necessarily expected to be used in the function. Not that many
513 compilers understand this, so this should only be used in cases where
514 C<L</PERL_UNUSED_ARG>> can't conveniently be used.
521 Perl_perly_sighandler(int sig, Siginfo_t *sip PERL_UNUSED_DECL,
522 void *uap PERL_UNUSED_DECL, bool safe)
529 #ifndef PERL_UNUSED_DECL
530 # define PERL_UNUSED_DECL __attribute__unused__
534 * for silencing unused variables that are actually used most of the time,
535 * but we cannot quite get rid of, such as "ax" in PPCODE+noargs xsubs,
536 * or variables/arguments that are used only in certain configurations.
539 =for apidoc Am;||PERL_UNUSED_ARG|void x
540 This is used to suppress compiler warnings that a parameter to a function is
541 not used. This situation can arise, for example, when a parameter is needed
542 under some configuration conditions, but not others, so that C preprocessor
543 conditional compilation causes it be used just sometimes.
545 =for apidoc Amn;||PERL_UNUSED_CONTEXT
546 This is used to suppress compiler warnings that the thread context parameter to
547 a function is not used. This situation can arise, for example, when a
548 C preprocessor conditional compilation causes it be used just some times.
550 =for apidoc Am;||PERL_UNUSED_VAR|void x
551 This is used to suppress compiler warnings that the variable I<x> is not used.
552 This situation can arise, for example, when a C preprocessor conditional
553 compilation causes it be used just some times.
557 #ifndef PERL_UNUSED_ARG
558 # define PERL_UNUSED_ARG(x) ((void)sizeof(x))
560 #ifndef PERL_UNUSED_VAR
561 # define PERL_UNUSED_VAR(x) ((void)sizeof(x))
564 #if defined(USE_ITHREADS)
565 # define PERL_UNUSED_CONTEXT PERL_UNUSED_ARG(my_perl)
567 # define PERL_UNUSED_CONTEXT
570 /* gcc (-ansi) -pedantic doesn't allow gcc statement expressions,
571 * g++ allows them but seems to have problems with them
572 * (insane errors ensue).
573 * g++ does not give insane errors now (RMB 2008-01-30, gcc 4.2.2).
575 #if defined(PERL_GCC_PEDANTIC) || \
576 (defined(__GNUC__) && defined(__cplusplus) && \
577 (PERL_GCC_VERSION_LT(4,2,0)))
578 # ifndef PERL_GCC_BRACE_GROUPS_FORBIDDEN
579 # define PERL_GCC_BRACE_GROUPS_FORBIDDEN
585 =for apidoc Am||PERL_UNUSED_RESULT|void x
587 This macro indicates to discard the return value of the function call inside
590 PERL_UNUSED_RESULT(foo(a, b))
592 The main reason for this is that the combination of C<gcc -Wunused-result>
593 (part of C<-Wall>) and the C<__attribute__((warn_unused_result))> cannot
594 be silenced with casting to C<void>. This causes trouble when the system
595 header files use the attribute.
597 Use C<PERL_UNUSED_RESULT> sparingly, though, since usually the warning
598 is there for a good reason: you might lose success/failure information,
599 or leak resources, or changes in resources.
601 But sometimes you just want to ignore the return value, I<e.g.>, on
602 codepaths soon ending up in abort, or in "best effort" attempts,
603 or in situations where there is no good way to handle failures.
605 Sometimes C<PERL_UNUSED_RESULT> might not be the most natural way:
606 another possibility is that you can capture the return value
607 and use C<L</PERL_UNUSED_VAR>> on that.
611 The __typeof__() is used instead of typeof() since typeof() is not
612 available under strict ISO C, and because of compilers masquerading
613 as gcc (clang and icc), we want exactly the gcc extension
614 __typeof__ and nothing else.
617 #ifndef PERL_UNUSED_RESULT
618 # if defined(__GNUC__) && defined(HASATTRIBUTE_WARN_UNUSED_RESULT)
619 # define PERL_UNUSED_RESULT(v) STMT_START { __typeof__(v) z = (v); (void)sizeof(z); } STMT_END
621 # define PERL_UNUSED_RESULT(v) ((void)(v))
625 /* on gcc (and clang), specify that a warning should be temporarily
628 * GCC_DIAG_IGNORE_DECL(-Wmultichar);
630 * GCC_DIAG_RESTORE_DECL;
632 * based on http://dbp-consulting.com/tutorials/SuppressingGCCWarnings.html
634 * Note that "pragma GCC diagnostic push/pop" was added in GCC 4.6, Mar 2011;
635 * clang only pretends to be GCC 4.2, but still supports push/pop.
637 * Note on usage: all macros must be used at a place where a declaration
638 * or statement can occur, i.e., not in the middle of an expression.
639 * *_DIAG_IGNORE() and *_DIAG_RESTORE can be used in any such place, but
640 * must be used without a following semicolon. *_DIAG_IGNORE_DECL() and
641 * *_DIAG_RESTORE_DECL must be used with a following semicolon, and behave
642 * syntactically as declarations (like dNOOP). *_DIAG_IGNORE_STMT()
643 * and *_DIAG_RESTORE_STMT must be used with a following semicolon,
644 * and behave syntactically as statements (like NOOP).
648 #if defined(__clang__) || defined(__clang) || PERL_GCC_VERSION_GE(4,6,0)
649 # define GCC_DIAG_PRAGMA(x) _Pragma (#x)
650 /* clang has "clang diagnostic" pragmas, but also understands gcc. */
651 # define GCC_DIAG_IGNORE(x) _Pragma("GCC diagnostic push") \
652 GCC_DIAG_PRAGMA(GCC diagnostic ignored #x)
653 # define GCC_DIAG_RESTORE _Pragma("GCC diagnostic pop")
655 # define GCC_DIAG_IGNORE(w)
656 # define GCC_DIAG_RESTORE
658 #define GCC_DIAG_IGNORE_DECL(x) GCC_DIAG_IGNORE(x) dNOOP
659 #define GCC_DIAG_RESTORE_DECL GCC_DIAG_RESTORE dNOOP
660 #define GCC_DIAG_IGNORE_STMT(x) GCC_DIAG_IGNORE(x) NOOP
661 #define GCC_DIAG_RESTORE_STMT GCC_DIAG_RESTORE NOOP
662 /* for clang specific pragmas */
663 #if defined(__clang__) || defined(__clang)
664 # define CLANG_DIAG_PRAGMA(x) _Pragma (#x)
665 # define CLANG_DIAG_IGNORE(x) _Pragma("clang diagnostic push") \
666 CLANG_DIAG_PRAGMA(clang diagnostic ignored #x)
667 # define CLANG_DIAG_RESTORE _Pragma("clang diagnostic pop")
669 # define CLANG_DIAG_IGNORE(w)
670 # define CLANG_DIAG_RESTORE
672 #define CLANG_DIAG_IGNORE_DECL(x) CLANG_DIAG_IGNORE(x) dNOOP
673 #define CLANG_DIAG_RESTORE_DECL CLANG_DIAG_RESTORE dNOOP
674 #define CLANG_DIAG_IGNORE_STMT(x) CLANG_DIAG_IGNORE(x) NOOP
675 #define CLANG_DIAG_RESTORE_STMT CLANG_DIAG_RESTORE NOOP
677 #if defined(_MSC_VER)
678 # define MSVC_DIAG_IGNORE(x) __pragma(warning(push)) \
679 __pragma(warning(disable : x))
680 # define MSVC_DIAG_RESTORE __pragma(warning(pop))
682 # define MSVC_DIAG_IGNORE(x)
683 # define MSVC_DIAG_RESTORE
685 #define MSVC_DIAG_IGNORE_DECL(x) MSVC_DIAG_IGNORE(x) dNOOP
686 #define MSVC_DIAG_RESTORE_DECL MSVC_DIAG_RESTORE dNOOP
687 #define MSVC_DIAG_IGNORE_STMT(x) MSVC_DIAG_IGNORE(x) NOOP
688 #define MSVC_DIAG_RESTORE_STMT MSVC_DIAG_RESTORE NOOP
691 =for apidoc Amn;||NOOP
692 Do nothing; typically used as a placeholder to replace something that used to
695 =for apidoc Amn;||dNOOP
696 Declare nothing; typically used as a placeholder to replace something that used
697 to declare something. Works on compilers that require declarations before any
702 #define NOOP ((void)0)
703 #define dNOOP struct Perl___notused_struct
706 /* Don't bother defining tTHX ; using it outside
707 * code guarded by MULTIPLICITY is an error.
713 # define aTHXa(a) NOOP
714 # define dTHXa(a) dNOOP
729 =for apidoc_section $concurrency
730 =for apidoc AmnU||dVAR
731 This is now a synonym for dNOOP: declare nothing
733 =for apidoc_section $XS
734 =for apidoc Amn;||dMY_CXT_SV
735 Now a placeholder that declares nothing
741 /* Backwards compatibility macro for XS code. It used to be part of the
742 * PERL_GLOBAL_STRUCT(_PRIVATE) feature, which no longer exists */
745 /* these are only defined for compatibility; should not be used internally.
747 # define dMY_CXT_SV dNOOP
750 # define pTHXo_ pTHX_
752 # define aTHXo_ aTHX_
754 # define dTHXoa(x) dTHXa(x)
759 # define pTHXx PerlInterpreter *my_perl
760 # define pTHXx_ pTHXx,
761 # define aTHXx my_perl
762 # define aTHXx_ aTHXx,
766 /* Under PERL_IMPLICIT_SYS (used in Windows for fork emulation)
767 * PerlIO_foo() expands to PL_StdIO->pFOO(PL_StdIO, ...).
768 * dTHXs is therefore needed for all functions using PerlIO_foo(). */
769 #ifdef PERL_IMPLICIT_SYS
775 #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__cplusplus)
776 # ifndef PERL_USE_GCC_BRACE_GROUPS
777 # define PERL_USE_GCC_BRACE_GROUPS
782 =for apidoc_section $directives
783 =for apidoc AmnUu|void|STMT_END
784 =for apidoc_item | |STMT_START
786 These allow a series of statements in a macro to be used as a single statement,
789 if (x) STMT_START { ... } STMT_END else ...
791 Note that you can't return a value out of this construct and cannot use it as
792 an operand to the comma operator. These limit its utility.
794 But, a value could be returned by constructing the API so that a pointer is
795 passed and the macro dereferences this to set the return. If the value can be
796 any of various types, depending on context, you can handle that situation in
797 some situations by adding the type of the return as an extra accompanying
800 #define foo(param, type) STMT_START {
801 type * param; *param = do_calc; ...
804 This could be awkward, so consider instead using a C language C<static inline>
807 If you do use this construct, it is easy to forget that it is a macro and not a
808 function, and hence fall into traps that might not show up until someone
809 someday writes code which contains names that clash with the ones you chose
810 here, or calls it with a parameter which is an expression with side effects,
811 the consequences of which you didn't think about. See L<perlhacktips/Writing
812 safer macros> for how to avoid these.
814 =for apidoc_section $genconfig
815 =for apidoc Amn#||PERL_USE_GCC_BRACE_GROUPS
817 This C pre-processor value, if defined, indicates that it is permissible to use
818 the GCC brace groups extension. However, use of this extension is DISCOURAGED.
819 Use a C<static inline> function instead.
821 The extension, of the form
825 turns the block consisting of I<statement ...> into an expression with a
826 value, unlike plain C language blocks. This can present optimization
827 possibilities, B<BUT>, unless you know for sure that this will never be
828 compiled without this extension being available and not forbidden, you need to
829 specify an alternative. Thus two code paths have to be maintained, which can
830 get out-of-sync. All these issues are solved by using a C<static inline>
833 Perl can be configured to not use this feature by passing the parameter
834 C<-Accflags=-DPERL_GCC_BRACE_GROUPS_FORBIDDEN> to F<Configure>.
836 =for apidoc Amnh#||PERL_GCC_BRACE_GROUPS_FORBIDDEN
842 #ifdef PERL_USE_GCC_BRACE_GROUPS
852 Trying to select a version that gives no warnings...
854 #if !(defined(STMT_START) && defined(STMT_END))
855 # define STMT_START do
856 # define STMT_END while (0)
859 #ifndef BYTEORDER /* Should never happen -- byteorder is in config.h */
860 # define BYTEORDER 0x1234
864 =for apidoc_section $genconfig
865 =for apidoc Amn#||ASCIIish
867 A preprocessor symbol that is defined iff the system is an ASCII platform; this
868 symbol would not be defined on C<L</EBCDIC>> platforms.
872 #if 'A' == 65 && 'I' == 73 && 'J' == 74 && 'Z' == 90
879 * The following contortions are brought to you on behalf of all the
880 * standards, semi-standards, de facto standards, not-so-de-facto standards
881 * of the world, as well as all the other botches anyone ever thought of.
882 * The basic theory is that if we work hard enough here, the rest of the
883 * code can be a lot prettier. Well, so much for theory. Sorry, Henry...
886 /* define this once if either system, instead of cluttering up the src */
891 /* These exist only for back-compat with XS modules. */
894 #define CAN_PROTOTYPE
901 /* By compiling a perl with -DNO_TAINT_SUPPORT or -DSILENT_NO_TAINT_SUPPORT,
902 * you get a perl without taint support, but doubtlessly with a lesser
903 * degree of support. Do not do so unless you know exactly what it means
904 * technically, have a good reason to do so, and know exactly how the
905 * perl will be used. perls with -DSILENT_NO_TAINT_SUPPORT are considered
906 * a potential security risk due to flat out ignoring the security-relevant
907 * taint flags. This being said, a perl without taint support compiled in
908 * has marginal run-time performance benefits.
909 * SILENT_NO_TAINT_SUPPORT implies NO_TAINT_SUPPORT.
910 * SILENT_NO_TAINT_SUPPORT is the same as NO_TAINT_SUPPORT except it
911 * silently ignores -t/-T instead of throwing an exception.
913 * DANGER! Using NO_TAINT_SUPPORT or SILENT_NO_TAINT_SUPPORT
914 * voids your nonexistent warranty!
916 #if defined(SILENT_NO_TAINT_SUPPORT) && !defined(NO_TAINT_SUPPORT)
917 # define NO_TAINT_SUPPORT 1
920 /* NO_TAINT_SUPPORT can be set to transform virtually all taint-related
921 * operations into no-ops for a very modest speed-up. Enable only if you
922 * know what you're doing: tests and CPAN modules' tests are bound to fail.
924 #ifdef NO_TAINT_SUPPORT
926 # define TAINT_NOT NOOP
927 # define TAINT_IF(c) NOOP
928 # define TAINT_ENV() NOOP
929 # define TAINT_PROPER(s) NOOP
930 # define TAINT_set(s) NOOP
932 # define TAINTING_get 0
933 # define TAINTING_set(s) NOOP
934 # define TAINT_WARN_get 0
935 # define TAINT_WARN_set(s) NOOP
939 =for apidoc_section $tainting
940 =for apidoc Cm|void|TAINT
942 If we aren't in taint checking mode, do nothing;
943 otherwise indicate to L</C<TAINT_set>> and L</C<TAINT_PROPER>> that some
944 unspecified element is tainted.
946 =for apidoc Cm|void|TAINT_NOT
948 Remove any taintedness previously set by, I<e.g.>, C<TAINT>.
950 =for apidoc Cm|void|TAINT_IF|bool c
952 If C<c> evaluates to true, call L</C<TAINT>> to indicate that something is
953 tainted; otherwise do nothing.
955 =for apidoc Cmn|void|TAINT_ENV
957 Looks at several components of L<C<%ENV>|perlvar/%ENV> for taintedness, and
958 calls L</C<taint_proper>> if any are tainted. The components it searches are
959 things like C<$PATH>.
961 =for apidoc Cm|void|TAINT_PROPER|const char * s
963 If no element is tainted, do nothing;
964 otherwise output a message (containing C<s>) that indicates there is a
965 tainting violation. If such violations are fatal, it croaks.
967 =for apidoc Cm|void|TAINT_set|bool s
969 If C<s> is true, L</C<TAINT_get>> returns true;
970 If C<s> is false, L</C<TAINT_get>> returns false;
972 =for apidoc Cm|bool|TAINT_get
974 Returns a boolean as to whether some element is tainted or not.
976 =for apidoc Cm|bool|TAINTING_get
978 Returns a boolean as to whether taint checking is enabled or not.
980 =for apidoc Cm|void|TAINTING_set|bool s
982 Turn taint checking mode off/on
984 =for apidoc Cm|bool|TAINT_WARN_get
986 Returns false if tainting violations are fatal;
987 Returns true if they're just warnings
989 =for apidoc Cm|void|TAINT_WARN_set|bool s
991 C<s> being true indicates L</C<TAINT_WARN_get>> should return that tainting
992 violations are just warnings
994 C<s> being false indicates L</C<TAINT_WARN_get>> should return that tainting
995 violations are fatal.
999 /* Set to tainted if we are running under tainting mode */
1000 # define TAINT (PL_tainted = PL_tainting)
1002 # define TAINT_NOT (PL_tainted = FALSE) /* Untaint */
1003 # define TAINT_IF(c) if (UNLIKELY(c)) { TAINT; } /* Conditionally taint */
1004 # define TAINT_ENV() if (UNLIKELY(PL_tainting)) { taint_env(); }
1005 /* croak or warn if tainting */
1006 # define TAINT_PROPER(s) if (UNLIKELY(PL_tainting)) { \
1007 taint_proper(NULL, s); \
1009 # define TAINT_set(s) (PL_tainted = cBOOL(s))
1010 # define TAINT_get (cBOOL(UNLIKELY(PL_tainted))) /* Is something tainted? */
1011 # define TAINTING_get (cBOOL(UNLIKELY(PL_tainting)))
1012 # define TAINTING_set(s) (PL_tainting = cBOOL(s))
1013 # define TAINT_WARN_get (PL_taint_warn)
1014 # define TAINT_WARN_set(s) (PL_taint_warn = cBOOL(s))
1017 /* flags used internally only within pp_subst and pp_substcont */
1019 # define SUBST_TAINT_STR 1 /* string tainted */
1020 # define SUBST_TAINT_PAT 2 /* pattern tainted */
1021 # define SUBST_TAINT_REPL 4 /* replacement tainted */
1022 # define SUBST_TAINT_RETAINT 8 /* use re'taint' in scope */
1023 # define SUBST_TAINT_BOOLRET 16 /* return is boolean (don't taint) */
1026 /* XXX All process group stuff is handled in pp_sys.c. Should these
1027 defines move there? If so, I could simplify this a lot. --AD 9/96.
1029 /* Process group stuff changed from traditional BSD to POSIX.
1030 perlfunc.pod documents the traditional BSD-style syntax, so we'll
1031 try to preserve that, if possible.
1034 # define BSD_SETPGRP(pid, pgrp) setpgid((pid), (pgrp))
1035 #elif defined(HAS_SETPGRP) && defined(USE_BSD_SETPGRP)
1036 # define BSD_SETPGRP(pid, pgrp) setpgrp((pid), (pgrp))
1037 #elif defined(HAS_SETPGRP2)
1038 # define BSD_SETPGRP(pid, pgrp) setpgrp2((pid), (pgrp))
1040 #if defined(BSD_SETPGRP) && !defined(HAS_SETPGRP)
1041 # define HAS_SETPGRP /* Well, effectively it does . . . */
1045 # define BSD_GETPGRP(pid) getpgid((pid))
1046 #elif defined(HAS_GETPGRP) && defined(USE_BSD_GETPGRP)
1047 # define BSD_GETPGRP(pid) getpgrp((pid))
1048 #elif defined(HAS_GETPGRP2)
1049 # define BSD_GETPGRP(pid) getpgrp2((pid))
1051 #if defined(BSD_GETPGRP) && !defined(HAS_GETPGRP)
1052 # define HAS_GETPGRP /* Well, effectively it does . . . */
1055 /* These are not exact synonyms, since setpgrp() and getpgrp() may
1056 have different behaviors, but perl.h used to define USE_BSDPGRP
1057 (prior to 5.003_05) so some extension might depend on it.
1059 #if defined(USE_BSD_SETPGRP) || defined(USE_BSD_GETPGRP)
1060 # ifndef USE_BSDPGRP
1061 # define USE_BSDPGRP
1065 /* This define exists only for compatibility. It used to mean "my_setenv and
1066 * friends should use setenv/putenv, instead of manipulating environ directly",
1067 * which is now always the case. It's still defined to prevent XS modules from
1068 * using the no longer existing PL_use_safe_putenv variable.
1070 #define PERL_USE_SAFE_PUTENV
1072 /* HP-UX 10.X CMA (Common Multithreaded Architecture) insists that
1073 pthread.h must be included before all other header files.
1075 #if defined(USE_ITHREADS) && defined(PTHREAD_H_FIRST) && defined(I_PTHREAD)
1076 # include <pthread.h>
1079 #include <sys/types.h>
1085 # include <stdarg.h>
1088 # include <stdint.h>
1095 #ifdef METHOD /* Defined by OSF/1 v3.0 by ctype.h */
1100 # include <locale.h>
1103 #ifdef NEED_XLOCALE_H
1104 # include <xlocale.h>
1107 #include "perl_langinfo.h" /* Needed for _NL_LOCALE_NAME */
1109 /* =========================================================================
1110 * The defines from here to the following ===== line are unfortunately
1111 * duplicated in makedef.pl, and changes here MUST also be made there */
1113 /* If not forbidden, we enable locale handling if either 1) the POSIX 2008
1114 * functions are available, or 2) just the setlocale() function. This logic is
1115 * repeated in t/loc_tools.pl and makedef.pl; The three should be kept in
1117 #if ! defined(NO_LOCALE)
1119 # if ! defined(NO_POSIX_2008_LOCALE) \
1120 && defined(HAS_NEWLOCALE) \
1121 && defined(HAS_USELOCALE) \
1122 && defined(HAS_DUPLOCALE) \
1123 && defined(HAS_FREELOCALE) \
1124 && defined(LC_ALL_MASK)
1126 /* For simplicity, the code is written to assume that any platform advanced
1127 * enough to have the Posix 2008 locale functions has LC_ALL. The final
1128 * test above makes sure that assumption is valid */
1130 # define HAS_POSIX_2008_LOCALE
1132 # elif defined(HAS_SETLOCALE)
1137 /* end of makedef.pl logic duplication. But there are other groups below.
1138 * ========================================================================= */
1141 # define HAS_SKIP_LOCALE_INIT /* Solely for XS code to test for this
1143 # if !defined(NO_LOCALE_COLLATE) && defined(LC_COLLATE) \
1144 && defined(HAS_STRXFRM)
1145 # define USE_LOCALE_COLLATE
1147 # if !defined(NO_LOCALE_CTYPE) && defined(LC_CTYPE)
1148 # define USE_LOCALE_CTYPE
1150 # if !defined(NO_LOCALE_NUMERIC) && defined(LC_NUMERIC)
1151 # define USE_LOCALE_NUMERIC
1153 # if !defined(NO_LOCALE_MESSAGES) && defined(LC_MESSAGES)
1154 # define USE_LOCALE_MESSAGES
1156 # if !defined(NO_LOCALE_MONETARY) && defined(LC_MONETARY)
1157 # define USE_LOCALE_MONETARY
1159 # if !defined(NO_LOCALE_TIME) && defined(LC_TIME)
1160 # define USE_LOCALE_TIME
1162 # if !defined(NO_LOCALE_ADDRESS) && defined(LC_ADDRESS)
1163 # define USE_LOCALE_ADDRESS
1165 # if !defined(NO_LOCALE_IDENTIFICATION) && defined(LC_IDENTIFICATION)
1166 # define USE_LOCALE_IDENTIFICATION
1168 # if !defined(NO_LOCALE_MEASUREMENT) && defined(LC_MEASUREMENT)
1169 # define USE_LOCALE_MEASUREMENT
1171 # if !defined(NO_LOCALE_PAPER) && defined(LC_PAPER)
1172 # define USE_LOCALE_PAPER
1174 # if !defined(NO_LOCALE_TELEPHONE) && defined(LC_TELEPHONE)
1175 # define USE_LOCALE_TELEPHONE
1177 # if !defined(NO_LOCALE_NAME) && defined(LC_NAME)
1178 # define USE_LOCALE_NAME
1180 # if !defined(NO_LOCALE_SYNTAX) && defined(LC_SYNTAX)
1181 # define USE_LOCALE_SYNTAX
1183 # if !defined(NO_LOCALE_TOD) && defined(LC_TOD)
1184 # define USE_LOCALE_TOD
1188 /* XXX The Configure probe for categories must be updated when adding new
1189 * categories here */
1191 /* Create an enum that allows translation between the arbitrary locale category
1192 * integers that a platform has, and our desired values that range from 0..n
1193 * which makes array indexing feasible.
1195 * In locale.c, there are a bunch of parallel arrays corresponding to this
1196 * enum. The first element of each corresponds with the first enum value here,
1197 * and so on. That means this enum must be in identical order with those
1198 * arrays. This is guaranteed by using locale_table.h in all instances.
1199 * (There are also asserts in locale.c that should fail if this gets
1200 * out-of-sync.) So, if the platform doesn't have LC_CTYPE, but does have
1201 * LC_NUMERIC, the code below will cause LC_NUMERIC_INDEX_ to be defined to be
1202 * 0. That way the foo_INDEX_ values are contiguous non-negative integers,
1203 * regardless of how the platform defines the actual locale categories.
1209 /* Now create LC_foo_INDEX_ values for just those categories used on this
1211 # undef PERL_LOCALE_TABLE_ENTRY
1212 # define PERL_LOCALE_TABLE_ENTRY(name, call_back) name ## _INDEX_,
1213 # include "locale_table.h"
1215 #endif /* USE_LOCALE */
1217 LC_ALL_INDEX_ /* Always defined, even if no LC_ALL on system */
1219 } locale_category_index;
1223 /* And a count of all the locale categories, mainly for use in array
1225 # define LOCALE_CATEGORIES_COUNT_ (LC_ALL_INDEX_ + 1)
1227 /* =========================================================================
1228 * The defines from here to the following ===== line are unfortunately
1229 * duplicated in makedef.pl, and changes here MUST also be made there */
1231 # if defined(USE_ITHREADS) && ! defined(NO_LOCALE_THREADS)
1232 # define USE_LOCALE_THREADS
1235 /* Use POSIX 2008 locales if available, and no alternative exists
1236 * ('setlocale()' is the alternative); or is threaded and not forbidden to
1238 # if ( defined(HAS_POSIX_2008_LOCALE) \
1239 && ( ! defined(HAS_SETLOCALE) \
1240 || ( defined(USE_LOCALE_THREADS) \
1241 && ! defined(NO_POSIX_2008_LOCALE))) \
1242 && ! defined(NO_THREAD_SAFE_LOCALE))
1243 # define USE_POSIX_2008_LOCALE
1246 /* On threaded builds, use thread-safe locales if they are available and not
1247 * forbidden. Availability is when we are using POSIX 2008 locales, or
1248 * Windows for any vintage recent enough to have _MSC_VER defined */
1249 # if defined(USE_LOCALE_THREADS) && ! defined(NO_THREAD_SAFE_LOCALE)
1250 # if defined(USE_POSIX_2008_LOCALE) || (defined(WIN32) && defined(_MSC_VER))
1251 # define USE_THREAD_SAFE_LOCALE
1255 # include "perl_langinfo.h" /* Needed for _NL_LOCALE_NAME */
1257 # ifdef USE_POSIX_2008_LOCALE
1258 # if defined(HAS_QUERYLOCALE) \
1259 /* Use querylocale if has it, or has the glibc internal \
1260 * undocumented equivalent. */ \
1261 || ( defined(_NL_LOCALE_NAME) \
1262 /* And asked for */ \
1263 && defined(USE_NL_LOCALE_NAME) \
1264 /* nl_langinfo_l almost certainly will exist on systems that \
1265 * have _NL_LOCALE_NAME, so there is nothing lost by \
1266 * requiring it instead of also allowing plain nl_langinfo(). \
1267 * And experience indicates that its glibc implementation is \
1268 * thread-safe, eliminating code complications */ \
1269 && defined(HAS_NL_LANGINFO_L) \
1270 /* On systems that accept any locale name, the real \
1271 * underlying locale is often returned by this internal \
1272 * item, so we can't use it */ \
1273 && ! defined(SETLOCALE_ACCEPTS_ANY_LOCALE_NAME))
1274 # define USE_QUERYLOCALE
1278 /* POSIX 2008 has no means of finding out the current locale without a
1279 * querylocale; so must keep track of it ourselves */
1280 # if (defined(USE_POSIX_2008_LOCALE) && ! defined(USE_QUERYLOCALE))
1281 # define USE_PL_CURLOCALES
1286 /* We need to be able to map the current value of what the tTHX context
1287 * thinks LC_ALL is so as to inform the Windows libc when switching
1289 # if defined(USE_THREAD_SAFE_LOCALE)
1290 # define USE_PL_CUR_LC_ALL
1293 /* Microsoft documentation reads in the change log for VS 2015: "The
1294 * localeconv function declared in locale.h now works correctly when
1295 * per-thread locale is enabled. In previous versions of the library, this
1296 * function would return the lconv data for the global locale, not the
1297 * thread's locale." */
1299 # define TS_W32_BROKEN_LOCALECONV
1300 # elif _MSC_VER < 1900
1301 # define TS_W32_BROKEN_LOCALECONV
1305 /* POSIX 2008 and Windows with thread-safe locales keep locale information
1306 * in libc data. Therefore we must inform their libc's when the context
1308 # if defined(MULTIPLICITY) && ( defined(USE_POSIX_2008_LOCALE) \
1309 || ( defined(WIN32) \
1310 && defined(USE_THREAD_SAFE_LOCALE)))
1311 # define USE_PERL_SWITCH_LOCALE_CONTEXT
1313 #endif /* End of USE_LOCALE */
1315 /* end of makedef.pl logic duplication
1316 * ========================================================================= */
1320 /* These typedefs are used in locale.c only (and documented there), but defined
1321 * here so that embed.fnc can generate the proper prototypes. */
1323 typedef enum { /* Is the locale UTF8? */
1326 LOCALE_UTF8NESS_UNKNOWN
1327 } locale_utf8ness_t;
1339 } parse_LC_ALL_string_return;
1346 # ifdef PARAM_NEEDS_TYPES
1347 # include <sys/types.h>
1349 # include <sys/param.h>
1352 /* On BSD-derived systems, <sys/param.h> defines BSD to a year-month
1353 value something like 199306. This may be useful if no more-specific
1354 feature test is available.
1362 /* Use all the "standard" definitions */
1365 /* If this causes problems, set i_unistd=undef in the hint file. */
1367 # if defined(__amigaos4__)
1368 # ifdef I_NETINET_IN
1369 # include <netinet/in.h>
1372 # include <unistd.h>
1373 # if defined(__amigaos4__)
1374 /* Under AmigaOS 4 newlib.library provides an environ. However using
1375 * it doesn't give us enough control over inheritance of variables by
1376 * subshells etc. so replace with custom version based on abc-shell
1378 extern char **myenviron;
1380 # define environ myenviron
1386 # include <sys/wait.h>
1389 #if defined(HAS_SYSCALL) && !defined(HAS_SYSCALL_PROTO)
1390 EXTERN_C int syscall(int, ...);
1393 #if defined(HAS_USLEEP) && !defined(HAS_USLEEP_PROTO)
1394 EXTERN_C int usleep(unsigned int);
1397 /* Macros for correct constant construction. These are in C99 <stdint.h>
1398 * (so they will not be available in strict C89 mode), but they are nice, so
1399 * let's define them if necessary. */
1402 =for apidoc_section $integer
1403 =for apidoc Am|I16|INT16_C|number
1404 =for apidoc_item |I32|INT32_C|number
1405 =for apidoc_item |I64|INT64_C|number
1407 Returns a token the C compiler recognizes for the constant C<number> of the
1408 corresponding integer type on the machine.
1410 If the machine does not have a 64-bit type, C<INT64_C> is undefined.
1411 Use C<L</INTMAX_C>> to get the largest type available on the platform.
1413 =for apidoc Am|U16|UINT16_C|number
1414 =for apidoc_item |U32|UINT32_C|number
1415 =for apidoc_item |U64|UINT64_C|number
1417 Returns a token the C compiler recognizes for the constant C<number> of the
1418 corresponding unsigned integer type on the machine.
1420 If the machine does not have a 64-bit type, C<UINT64_C> is undefined.
1421 Use C<L</UINTMAX_C>> to get the largest type available on the platform.
1428 # define UINT16_C(x) ((U16_TYPE)x##U)
1430 # define UINT16_C(x) ((U16_TYPE)x##UL)
1436 # define UINT32_C(x) ((U32_TYPE)x##U)
1438 # define UINT32_C(x) ((U32_TYPE)x##UL)
1443 typedef intmax_t PERL_INTMAX_T;
1444 typedef uintmax_t PERL_UINTMAX_T;
1447 /* N.B. We use QUADKIND here instead of HAS_QUAD here, because that doesn't
1448 * actually mean what it has always been documented to mean (see RT #119753)
1449 * and is explicitly turned off outside of core with dire warnings about
1450 * removing the undef. */
1452 #if defined(QUADKIND)
1453 # undef PeRl_INT64_C
1454 # undef PeRl_UINT64_C
1455 /* Prefer the native integer types (int and long) over long long
1456 * (which is not C89) and Win32-specific __int64. */
1457 # if QUADKIND == QUAD_IS_INT && INTSIZE == 8
1458 # define PeRl_INT64_C(c) (c)
1459 # define PeRl_UINT64_C(c) CAT2(c,U)
1461 # if QUADKIND == QUAD_IS_LONG && LONGSIZE == 8
1462 # define PeRl_INT64_C(c) CAT2(c,L)
1463 # define PeRl_UINT64_C(c) CAT2(c,UL)
1465 # if QUADKIND == QUAD_IS_LONG_LONG && defined(HAS_LONG_LONG)
1466 # define PeRl_INT64_C(c) CAT2(c,LL)
1467 # define PeRl_UINT64_C(c) CAT2(c,ULL)
1469 # if QUADKIND == QUAD_IS___INT64
1470 # define PeRl_INT64_C(c) CAT2(c,I64)
1471 # define PeRl_UINT64_C(c) CAT2(c,UI64)
1473 # ifndef PeRl_INT64_C
1474 # define PeRl_INT64_C(c) ((I64)(c)) /* last resort */
1475 # define PeRl_UINT64_C(c) ((U64TYPE)(c))
1477 /* In OS X the INT64_C/UINT64_C are defined with LL/ULL, which will
1478 * not fly with C89-pedantic gcc, so let's undefine them first so that
1479 * we can redefine them with our native integer preferring versions. */
1480 # if defined(PERL_DARWIN) && defined(PERL_GCC_PEDANTIC)
1485 # define INT64_C(c) PeRl_INT64_C(c)
1488 # define UINT64_C(c) PeRl_UINT64_C(c)
1492 =for apidoc_section $integer
1493 =for apidoc Am||INTMAX_C|number
1494 Returns a token the C compiler recognizes for the constant C<number> of the
1495 widest integer type on the machine. For example, if the machine has C<long
1496 long>s, C<INTMAX_C(-1)> would yield
1500 See also, for example, C<L</INT32_C>>.
1502 Use L</IV> to declare variables of the maximum usable size on this platform.
1504 =for apidoc Am||UINTMAX_C|number
1505 Returns a token the C compiler recognizes for the constant C<number> of the
1506 widest unsigned integer type on the machine. For example, if the machine has
1507 C<long>s, C<UINTMAX_C(1)> would yield
1511 See also, for example, C<L</UINT32_C>>.
1513 Use L</UV> to declare variables of the maximum usable size on this platform.
1519 typedef I64TYPE PERL_INTMAX_T;
1520 typedef U64TYPE PERL_UINTMAX_T;
1523 # define INTMAX_C(c) INT64_C(c)
1526 # define UINTMAX_C(c) UINT64_C(c)
1529 #else /* below QUADKIND is undefined */
1531 /* Perl doesn't work on 16 bit systems, so must be 32 bit */
1533 typedef I32TYPE PERL_INTMAX_T;
1534 typedef U32TYPE PERL_UINTMAX_T;
1537 # define INTMAX_C(c) INT32_C(c)
1540 # define UINTMAX_C(c) UINT32_C(c)
1543 #endif /* no QUADKIND */
1547 /* byte-swapping functions for big-/little-endian conversion */
1548 # define _swab_16_(x) ((U16)( \
1549 (((U16)(x) & UINT16_C(0x00ff)) << 8) | \
1550 (((U16)(x) & UINT16_C(0xff00)) >> 8) ))
1552 # define _swab_32_(x) ((U32)( \
1553 (((U32)(x) & UINT32_C(0x000000ff)) << 24) | \
1554 (((U32)(x) & UINT32_C(0x0000ff00)) << 8) | \
1555 (((U32)(x) & UINT32_C(0x00ff0000)) >> 8) | \
1556 (((U32)(x) & UINT32_C(0xff000000)) >> 24) ))
1559 # define _swab_64_(x) ((U64)( \
1560 (((U64)(x) & UINT64_C(0x00000000000000ff)) << 56) | \
1561 (((U64)(x) & UINT64_C(0x000000000000ff00)) << 40) | \
1562 (((U64)(x) & UINT64_C(0x0000000000ff0000)) << 24) | \
1563 (((U64)(x) & UINT64_C(0x00000000ff000000)) << 8) | \
1564 (((U64)(x) & UINT64_C(0x000000ff00000000)) >> 8) | \
1565 (((U64)(x) & UINT64_C(0x0000ff0000000000)) >> 24) | \
1566 (((U64)(x) & UINT64_C(0x00ff000000000000)) >> 40) | \
1567 (((U64)(x) & UINT64_C(0xff00000000000000)) >> 56) ))
1570 /* Maximum level of recursion */
1571 #ifndef PERL_SUB_DEPTH_WARN
1572 #define PERL_SUB_DEPTH_WARN 100
1575 #endif /* PERL_CORE */
1577 /* Maximum number of args that may be passed to an OP_MULTICONCAT op.
1578 * It determines the size of local arrays in S_maybe_multiconcat() and
1581 #define PERL_MULTICONCAT_MAXARG 64
1583 /* The indexes of fields of a multiconcat aux struct.
1584 * The fixed fields are followed by nargs+1 const segment lengths,
1585 * and if utf8 and non-utf8 differ, a second nargs+1 set for utf8.
1588 #define PERL_MULTICONCAT_IX_NARGS 0 /* number of arguments */
1589 #define PERL_MULTICONCAT_IX_PLAIN_PV 1 /* non-utf8 constant string */
1590 #define PERL_MULTICONCAT_IX_PLAIN_LEN 2 /* non-utf8 constant string length */
1591 #define PERL_MULTICONCAT_IX_UTF8_PV 3 /* utf8 constant string */
1592 #define PERL_MULTICONCAT_IX_UTF8_LEN 4 /* utf8 constant string length */
1593 #define PERL_MULTICONCAT_IX_LENGTHS 5 /* first of nargs+1 const segment lens */
1594 #define PERL_MULTICONCAT_HEADER_SIZE 5 /* The number of fields of a
1595 multiconcat header */
1597 /* We no longer default to creating a new SV for GvSV.
1598 Do this before embed. */
1599 #ifndef PERL_CREATE_GVSV
1600 # ifndef PERL_DONT_CREATE_GVSV
1601 # define PERL_DONT_CREATE_GVSV
1605 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
1606 #define PERL_USES_PL_PIDSTATUS
1609 #if !defined(OS2) && !defined(WIN32)
1610 #define PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION
1613 #define MEM_SIZE Size_t
1615 /* av_extend and analogues enforce a minimum number of array elements.
1616 * This has been 4 elements (so a minimum key size of 3) for a long
1617 * time, but the rationale behind this seems to have been lost to the
1619 #ifndef PERL_ARRAY_NEW_MIN_KEY
1620 #define PERL_ARRAY_NEW_MIN_KEY 3
1623 /* Functions like Perl_sv_grow mandate a minimum string size.
1624 * This was 10 bytes for a long time, the rationale for which seems lost
1625 * to the mists of time. However, this does not correlate to what modern
1626 * malloc implementations will actually return, in particular the fact
1627 * that chunks are almost certainly some multiple of pointer size. The
1628 * default has therefore been revised to a more useful approximation.
1629 * Notes: The following is specifically conservative for 64 bit, since
1630 * most dlmalloc derivatives seem to serve a 3xPTRSIZE minimum chunk,
1631 * so the below perhaps should be:
1632 * ((PTRSIZE == 4) ? 12 : 24)
1633 * Configure probes for malloc_good_size, malloc_actual_size etc.
1634 * could be revised to record the actual minimum chunk size, to which
1635 * PERL_STRLEN_NEW_MIN could then be set.
1637 #ifndef PERL_STRLEN_NEW_MIN
1638 #define PERL_STRLEN_NEW_MIN ((PTRSIZE == 4) ? 12 : 16)
1641 /* Round all values passed to malloc up, by default to a multiple of
1644 #ifndef PERL_STRLEN_ROUNDUP_QUANTUM
1645 #define PERL_STRLEN_ROUNDUP_QUANTUM Size_t_size
1648 /* sv_grow() will expand strings by at least a certain percentage of
1649 the previously *used* length to avoid excessive calls to realloc().
1650 The default is 25% of the current length.
1652 #ifndef PERL_STRLEN_EXPAND_SHIFT
1653 # define PERL_STRLEN_EXPAND_SHIFT 2
1656 /* This use of offsetof() requires /Zc:offsetof- for VS2017 (and presumably
1657 * onwards) when building Socket.xs, but we can just use a different definition
1658 * for STRUCT_OFFSET instead. */
1659 #if defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1910
1660 # define STRUCT_OFFSET(s,m) (Size_t)(&(((s *)0)->m))
1662 # include <stddef.h>
1663 # define STRUCT_OFFSET(s,m) offsetof(s,m)
1666 /* ptrdiff_t is C11, so undef it under pedantic builds. (Actually it is
1667 * in C89, but apparently there are platforms where it doesn't exist. See
1668 * thread beginning at http://nntp.perl.org/group/perl.perl5.porters/251541.)
1670 #ifdef PERL_GCC_PEDANTIC
1671 # undef HAS_PTRDIFF_T
1674 #ifdef HAS_PTRDIFF_T
1675 # define Ptrdiff_t ptrdiff_t
1677 # define Ptrdiff_t SSize_t
1680 # include <string.h>
1682 /* This comes after <stdlib.h> so we don't try to change the standard
1683 * library prototypes; we'll use our own in proto.h instead. */
1686 # ifdef PERL_POLLUTE_MALLOC
1687 # ifndef PERL_EXTMALLOC_DEF
1688 # define Perl_malloc malloc
1689 # define Perl_calloc calloc
1690 # define Perl_realloc realloc
1691 # define Perl_mfree free
1694 # define EMBEDMYMALLOC /* for compatibility */
1697 # define safemalloc Perl_malloc
1698 # define safecalloc Perl_calloc
1699 # define saferealloc Perl_realloc
1700 # define safefree Perl_mfree
1701 # define CHECK_MALLOC_TOO_LATE_FOR_(code) STMT_START { \
1702 if (!TAINTING_get && MallocCfg_ptr[MallocCfg_cfg_env_read]) \
1705 # define CHECK_MALLOC_TOO_LATE_FOR(ch) \
1706 CHECK_MALLOC_TOO_LATE_FOR_(MALLOC_TOO_LATE_FOR(ch))
1707 # define panic_write2(s) write(2, s, strlen(s))
1708 # define CHECK_MALLOC_TAINT(newval) \
1709 CHECK_MALLOC_TOO_LATE_FOR_( \
1711 PERL_UNUSED_RESULT(panic_write2("panic: tainting with $ENV{PERL_MALLOC_OPT}\n"));\
1713 # define MALLOC_CHECK_TAINT(argc,argv,env) \
1715 if (doing_taint(argc,argv,env)) { \
1716 MallocCfg_ptr[MallocCfg_skip_cfg_env] = 1; \
1719 #else /* MYMALLOC */
1720 # define safemalloc safesysmalloc
1721 # define safecalloc safesyscalloc
1722 # define saferealloc safesysrealloc
1723 # define safefree safesysfree
1724 # define CHECK_MALLOC_TOO_LATE_FOR(ch) ((void)0)
1725 # define CHECK_MALLOC_TAINT(newval) ((void)0)
1726 # define MALLOC_CHECK_TAINT(argc,argv,env)
1727 #endif /* MYMALLOC */
1729 /* diag_listed_as: "-T" is on the #! line, it must also be used on the command line */
1730 #define TOO_LATE_FOR_(ch,what) Perl_croak(aTHX_ "\"-%c\" is on the #! line, it must also be used on the command line%s", (char)(ch), what)
1731 #define TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, "")
1732 #define MALLOC_TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, " with $ENV{PERL_MALLOC_OPT}")
1733 #define MALLOC_CHECK_TAINT2(argc,argv) MALLOC_CHECK_TAINT(argc,argv,NULL)
1736 =for apidoc Am|void|memzero|void * d|Size_t l
1737 Set the C<l> bytes starting at C<*d> to all zeroes.
1742 # define memzero(d,l) memset(d,0,l)
1746 # include <netinet/in.h>
1750 # include <arpa/inet.h>
1754 # include <sys/stat.h>
1757 /* Microsoft VC's sys/stat.h defines all S_Ixxx macros except S_IFIFO.
1758 This definition should ideally go into win32/win32.h, but S_IFIFO is
1759 used later here in perl.h before win32/win32.h is being included. */
1760 #if !defined(S_IFIFO) && defined(_S_IFIFO)
1761 # define S_IFIFO _S_IFIFO
1764 /* The stat macros for Unisoft System V/88 (and derivatives
1765 like UTekV) are broken, sometimes giving false positives. Undefine
1766 them here and let the code below set them to proper values.
1768 The ghs macro stands for GreenHills Software C-1.8.5 which
1769 is the C compiler for sysV88 and the various derivatives.
1770 This header file bug is corrected in gcc-2.5.8 and later versions.
1771 --Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94. */
1773 #if defined(m88k) && defined(ghs)
1785 # ifdef I_SYS_TIME_KERNEL
1788 # include <sys/time.h>
1789 # ifdef I_SYS_TIME_KERNEL
1794 #if defined(HAS_TIMES) && defined(I_SYS_TIMES)
1795 # include <sys/times.h>
1800 #if defined(WIN32) && defined(PERL_IMPLICIT_SYS)
1801 # define WIN32SCK_IS_STDSCK /* don't pull in custom wsock layer */
1804 #if defined(HAS_SOCKET) && !defined(WIN32) /* WIN32 handles sockets via win32.h */
1805 # include <sys/socket.h>
1806 # if defined(USE_SOCKS) && defined(I_SOCKS)
1807 # if !defined(INCLUDE_PROTOTYPES)
1808 # define INCLUDE_PROTOTYPES /* for <socks.h> */
1809 # define PERL_SOCKS_NEED_PROTOTYPES
1812 # ifdef PERL_SOCKS_NEED_PROTOTYPES /* keep cpp space clean */
1813 # undef INCLUDE_PROTOTYPES
1814 # undef PERL_SOCKS_NEED_PROTOTYPES
1822 # include <net/errno.h>
1827 /* sockatmark() is so new (2001) that many places might have it hidden
1828 * behind some -D_BLAH_BLAH_SOURCE guard. The __THROW magic is required
1829 * e.g. in Gentoo, see http://bugs.gentoo.org/show_bug.cgi?id=12605 */
1830 #if defined(HAS_SOCKATMARK) && !defined(HAS_SOCKATMARK_PROTO)
1831 # if defined(__THROW) && defined(__GLIBC__)
1832 int sockatmark(int) __THROW;
1834 int sockatmark(int);
1838 #if defined(__osf__) && defined(__cplusplus) && !defined(_XOPEN_SOURCE_EXTENDED) /* Tru64 "cxx" (C++), see hints/dec_osf.sh for why the _XOPEN_SOURCE_EXTENDED cannot be defined. */
1839 EXTERN_C int fchdir(int);
1840 EXTERN_C int flock(int, int);
1841 EXTERN_C int fseeko(FILE *, off_t, int);
1842 EXTERN_C off_t ftello(FILE *);
1845 #if defined(__SUNPRO_CC) /* SUNWspro CC (C++) */
1846 EXTERN_C char *crypt(const char *, const char *);
1849 #if defined(__cplusplus) && defined(__CYGWIN__)
1850 EXTERN_C char *crypt(const char *, const char *);
1854 =for apidoc_section $errno
1856 =for apidoc m|void|SETERRNO|int errcode|int vmserrcode
1858 Set C<errno>, and on VMS set C<vaxc$errno>.
1860 =for apidoc mn|void|dSAVEDERRNO
1862 Declare variables needed to save C<errno> and any operating system
1863 specific error number.
1865 =for apidoc mn|void|dSAVE_ERRNO
1867 Declare variables needed to save C<errno> and any operating system
1868 specific error number, and save them for optional later restoration
1869 by C<RESTORE_ERRNO>.
1871 =for apidoc mn|void|SAVE_ERRNO
1873 Save C<errno> and any operating system specific error number for
1874 optional later restoration by C<RESTORE_ERRNO>. Requires
1875 C<dSAVEDERRNO> or C<dSAVE_ERRNO> in scope.
1877 =for apidoc mn|void|RESTORE_ERRNO
1879 Restore C<errno> and any operating system specific error number that
1880 was saved by C<dSAVE_ERRNO> or C<RESTORE_ERRNO>.
1886 # undef SETERRNO /* SOCKS might have defined this */
1890 # define SETERRNO(errcode,vmserrcode) \
1892 set_errno(errcode); \
1893 set_vaxc_errno(vmserrcode); \
1895 # define dSAVEDERRNO int saved_errno; unsigned saved_vms_errno
1896 # define dSAVE_ERRNO int saved_errno = errno; unsigned saved_vms_errno = vaxc$errno
1897 # define SAVE_ERRNO ( saved_errno = errno, saved_vms_errno = vaxc$errno )
1898 # define RESTORE_ERRNO SETERRNO(saved_errno, saved_vms_errno)
1900 # define LIB_INVARG LIB$_INVARG
1901 # define RMS_DIR RMS$_DIR
1902 # define RMS_FAC RMS$_FAC
1903 # define RMS_FEX RMS$_FEX
1904 # define RMS_FNF RMS$_FNF
1905 # define RMS_IFI RMS$_IFI
1906 # define RMS_ISI RMS$_ISI
1907 # define RMS_PRV RMS$_PRV
1908 # define SS_ACCVIO SS$_ACCVIO
1909 # define SS_DEVOFFLINE SS$_DEVOFFLINE
1910 # define SS_IVCHAN SS$_IVCHAN
1911 # define SS_NORMAL SS$_NORMAL
1912 # define SS_NOPRIV SS$_NOPRIV
1913 # define SS_BUFFEROVF SS$_BUFFEROVF
1915 # define LIB_INVARG 0
1923 # define SS_ACCVIO 0
1924 # define SS_DEVOFFLINE 0
1925 # define SS_IVCHAN 0
1926 # define SS_NORMAL 0
1927 # define SS_NOPRIV 0
1928 # define SS_BUFFEROVF 0
1932 # define dSAVEDERRNO int saved_errno; DWORD saved_win32_errno
1933 # define dSAVE_ERRNO int saved_errno = errno; DWORD saved_win32_errno = GetLastError()
1934 # define SAVE_ERRNO ( saved_errno = errno, saved_win32_errno = GetLastError() )
1935 # define RESTORE_ERRNO ( errno = saved_errno, SetLastError(saved_win32_errno) )
1939 # define dSAVEDERRNO int saved_errno; unsigned long saved_os2_errno
1940 # define dSAVE_ERRNO int saved_errno = errno; unsigned long saved_os2_errno = Perl_rc
1941 # define SAVE_ERRNO ( saved_errno = errno, saved_os2_errno = Perl_rc )
1942 # define RESTORE_ERRNO ( errno = saved_errno, Perl_rc = saved_os2_errno )
1946 # define SETERRNO(errcode,vmserrcode) (errno = (errcode))
1950 # define dSAVEDERRNO int saved_errno
1951 # define dSAVE_ERRNO int saved_errno = errno
1952 # define SAVE_ERRNO (saved_errno = errno)
1953 # define RESTORE_ERRNO (errno = saved_errno)
1957 =for apidoc_section $warning
1959 =for apidoc Amn|SV *|ERRSV
1961 Returns the SV for C<$@>, creating it if needed.
1963 =for apidoc Am|void|CLEAR_ERRSV
1965 Clear the contents of C<$@>, setting it to the empty string.
1967 This replaces any read-only SV with a fresh SV and removes any magic.
1969 =for apidoc Am|void|SANE_ERRSV
1971 Clean up ERRSV so we can safely set it.
1973 This replaces any read-only SV with a fresh writable copy and removes
1979 #define ERRSV GvSVn(PL_errgv)
1981 /* contains inlined gv_add_by_type */
1982 #define CLEAR_ERRSV() STMT_START { \
1983 SV ** const svp = &GvSV(PL_errgv); \
1985 *svp = newSVpvs(""); \
1986 } else if (SvREADONLY(*svp)) { \
1987 SvREFCNT_dec_NN(*svp); \
1988 *svp = newSVpvs(""); \
1990 SV *const errsv = *svp; \
1992 SvPOK_only(errsv); \
1993 if (SvMAGICAL(errsv)) { \
1999 /* contains inlined gv_add_by_type */
2000 #define SANE_ERRSV() STMT_START { \
2001 SV ** const svp = &GvSV(PL_errgv); \
2003 *svp = newSVpvs(""); \
2004 } else if (SvREADONLY(*svp)) { \
2005 SV *dupsv = newSVsv(*svp); \
2006 SvREFCNT_dec_NN(*svp); \
2009 SV *const errsv = *svp; \
2010 if (SvMAGICAL(errsv)) { \
2018 # define DEFSV (0 + GvSVn(PL_defgv))
2019 # define DEFSV_set(sv) \
2020 (SvREFCNT_dec(GvSV(PL_defgv)), GvSV(PL_defgv) = SvREFCNT_inc(sv))
2021 # define SAVE_DEFSV \
2023 save_gp(PL_defgv, 0), \
2024 GvINTRO_off(PL_defgv), \
2025 SAVEGENERICSV(GvSV(PL_defgv)), \
2026 GvSV(PL_defgv) = NULL \
2029 # define DEFSV GvSVn(PL_defgv)
2030 # define DEFSV_set(sv) (GvSV(PL_defgv) = (sv))
2031 # define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv))
2035 =for apidoc_section $SV
2036 =for apidoc Amn|SV *|DEFSV
2037 Returns the SV associated with C<$_>
2039 =for apidoc Am|void|DEFSV_set|SV * sv
2040 Associate C<sv> with C<$_>
2042 =for apidoc Amn|void|SAVE_DEFSV
2043 Localize C<$_>. See L<perlguts/Localizing changes>.
2049 extern int errno; /* ANSI allows errno to be an lvalue expr.
2050 * For example in multithreaded environments
2051 * something like this might happen:
2052 * extern int *_errno(void);
2053 * #define errno (*_errno()) */
2056 #define UNKNOWN_ERRNO_MSG "(unknown)"
2059 #define Strerror(e) strerror((e), vaxc$errno)
2061 #define Strerror(e) strerror(e)
2066 # include <sys/ioctl.h>
2070 #if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
2071 # ifdef HAS_SOCKETPAIR
2072 # undef HAS_SOCKETPAIR
2079 #ifndef HAS_SOCKETPAIR
2081 # define socketpair Perl_my_socketpair
2086 # define htoni htons
2087 # define ntohi ntohs
2089 # define htoni htonl
2090 # define ntohi ntohl
2093 /* Configure already sets Direntry_t */
2094 #if defined(I_DIRENT)
2095 # include <dirent.h>
2096 #elif defined(I_SYS_NDIR)
2097 # include <sys/ndir.h>
2098 #elif defined(I_SYS_DIR)
2099 # include <sys/dir.h>
2103 * The following gobbledygook brought to you on behalf of __STDC__.
2104 * (I could just use #ifndef __STDC__, but this is more bulletproof
2105 * in the face of half-implementations.)
2108 #if defined(I_SYSMODE)
2109 #include <sys/mode.h>
2114 # define S_IFMT _S_IFMT
2116 # define S_IFMT 0170000
2121 # define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
2125 # define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
2130 # define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
2132 # define S_ISBLK(m) (0)
2137 # define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
2142 # define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
2144 # define S_ISFIFO(m) (0)
2150 # define S_ISLNK(m) _S_ISLNK(m)
2151 # elif defined(_S_IFLNK)
2152 # define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
2153 # elif defined(S_IFLNK)
2154 # define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
2156 # define S_ISLNK(m) (0)
2162 # define S_ISSOCK(m) _S_ISSOCK(m)
2163 # elif defined(_S_IFSOCK)
2164 # define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
2165 # elif defined(S_IFSOCK)
2166 # define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
2168 # define S_ISSOCK(m) (0)
2174 # define S_IRUSR S_IREAD
2175 # define S_IWUSR S_IWRITE
2176 # define S_IXUSR S_IEXEC
2178 # define S_IRUSR 0400
2179 # define S_IWUSR 0200
2180 # define S_IXUSR 0100
2186 # define S_IRGRP (S_IRUSR>>3)
2187 # define S_IWGRP (S_IWUSR>>3)
2188 # define S_IXGRP (S_IXUSR>>3)
2190 # define S_IRGRP 0040
2191 # define S_IWGRP 0020
2192 # define S_IXGRP 0010
2198 # define S_IROTH (S_IRUSR>>6)
2199 # define S_IWOTH (S_IWUSR>>6)
2200 # define S_IXOTH (S_IXUSR>>6)
2202 # define S_IROTH 0040
2203 # define S_IWOTH 0020
2204 # define S_IXOTH 0010
2209 # define S_ISUID 04000
2213 # define S_ISGID 02000
2217 # define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR)
2221 # define S_IRWXG (S_IRGRP|S_IWGRP|S_IXGRP)
2225 # define S_IRWXO (S_IROTH|S_IWOTH|S_IXOTH)
2228 /* Haiku R1 seems to define S_IREAD and S_IWRITE in <posix/fcntl.h>
2229 * which would get included through <sys/file.h >, but that is 3000
2230 * lines in the future. --jhi */
2232 #if !defined(S_IREAD) && !defined(__HAIKU__)
2233 # define S_IREAD S_IRUSR
2236 #if !defined(S_IWRITE) && !defined(__HAIKU__)
2237 # define S_IWRITE S_IWUSR
2241 # define S_IEXEC S_IXUSR
2244 #if defined(cray) || defined(gould) || defined(i860) || defined(pyr)
2245 # define SLOPPYDIVIDE
2252 /* This used to be conditionally defined based on whether we had a sprintf()
2253 * that correctly returns the string length (as required by C89), but we no
2254 * longer need that. XS modules can (and do) use this name, so it must remain
2255 * a part of the API that's visible to modules.
2257 =for apidoc_section $string
2258 =for apidoc ATmD|int|my_sprintf|NN char *buffer|NN const char *pat|...
2260 Do NOT use this due to the possibility of overflowing C<buffer>. Instead use
2265 #define my_sprintf sprintf
2268 * If we have v?snprintf() and the C99 variadic macros, we can just
2269 * use just the v?snprintf(). It is nice to try to trap the buffer
2270 * overflow, however, so if we are DEBUGGING, and we cannot use the
2271 * gcc statement expressions, then use the function wrappers which try
2272 * to trap the overflow. If we can use the gcc statement expressions,
2273 * we can try that even with the version that uses the C99 variadic
2277 /* Note that we do not check against snprintf()/vsnprintf() returning
2278 * negative values because that is non-standard behaviour and we use
2279 * snprintf/vsnprintf only iff HAS_VSNPRINTF has been defined, and
2280 * that should be true only if the snprintf()/vsnprintf() are true
2281 * to the standard. */
2283 #define PERL_SNPRINTF_CHECK(len, max, api) STMT_START { if ((max) > 0 && (Size_t)len > (max)) Perl_croak_nocontext("panic: %s buffer overflow", STRINGIFY(api)); } STMT_END
2285 #if defined(USE_LOCALE_NUMERIC) || defined(USE_QUADMATH)
2286 # define my_snprintf Perl_my_snprintf
2287 # define PERL_MY_SNPRINTF_GUARDED
2288 #elif defined(HAS_SNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
2289 # ifdef PERL_USE_GCC_BRACE_GROUPS
2290 # define my_snprintf(buffer, max, ...) ({ int len = snprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, snprintf); len; })
2291 # define PERL_MY_SNPRINTF_GUARDED
2293 # define my_snprintf(buffer, max, ...) snprintf(buffer, max, __VA_ARGS__)
2296 # define my_snprintf Perl_my_snprintf
2297 # define PERL_MY_SNPRINTF_GUARDED
2300 /* There is no quadmath_vsnprintf, and therefore my_vsnprintf()
2301 * dies if called under USE_QUADMATH. */
2302 #if ! defined(USE_LOCALE_NUMERIC) \
2303 && defined(HAS_VSNPRINTF) \
2304 && defined(HAS_C99_VARIADIC_MACROS) \
2305 && ! (defined(DEBUGGING) && ! defined(PERL_USE_GCC_BRACE_GROUPS)) \
2306 && ! defined(PERL_GCC_PEDANTIC)
2307 # ifdef PERL_USE_GCC_BRACE_GROUPS
2308 # define my_vsnprintf(buffer, max, ...) \
2309 ({ int len = vsnprintf(buffer, max, __VA_ARGS__); \
2310 PERL_SNPRINTF_CHECK(len, max, vsnprintf); \
2312 # define PERL_MY_VSNPRINTF_GUARDED
2314 # define my_vsnprintf(buffer, max, ...) vsnprintf(buffer, max, __VA_ARGS__)
2317 # define my_vsnprintf Perl_my_vsnprintf
2318 # define PERL_MY_VSNPRINTF_GUARDED
2321 /* You will definitely need to use the PERL_MY_SNPRINTF_POST_GUARD()
2322 * or PERL_MY_VSNPRINTF_POST_GUARD() if you otherwise decide to ignore
2323 * the result of my_snprintf() or my_vsnprintf(). (No, you should not
2324 * completely ignore it: otherwise you cannot know whether your output
2327 * int len = my_sprintf(buf, max, ...);
2328 * PERL_MY_SNPRINTF_POST_GUARD(len, max);
2330 * The trick is that in certain platforms [a] the my_sprintf() already
2331 * contains the sanity check, while in certain platforms [b] it needs
2332 * to be done as a separate step. The POST_GUARD is that step-- in [a]
2333 * platforms the POST_GUARD actually does nothing since the check has
2334 * already been done. Watch out for the max being the same in both calls.
2336 * If you actually use the snprintf/vsnprintf return value already,
2337 * you assumedly are checking its validity somehow. But you can
2338 * insert the POST_GUARD() also in that case. */
2340 #ifndef PERL_MY_SNPRINTF_GUARDED
2341 # define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, snprintf)
2343 # define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
2346 #ifndef PERL_MY_VSNPRINTF_GUARDED
2347 # define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, vsnprintf)
2349 # define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
2353 # define my_strlcat strlcat
2356 #if defined(PERL_CORE) || defined(PERL_EXT)
2358 # define my_memrchr memrchr
2360 # define my_memrchr S_my_memrchr
2365 # define my_strlcpy strlcpy
2369 # define my_strnlen strnlen
2373 The IV type is supposed to be long enough to hold any integral
2375 --Andy Dougherty August 1996
2381 #if defined(USE_64_BIT_INT) && defined(HAS_QUAD)
2382 # if QUADKIND == QUAD_IS_INT64_T && defined(INT64_MAX)
2383 # define IV_MAX ((IV)INT64_MAX)
2384 # define IV_MIN ((IV)INT64_MIN)
2385 # define UV_MAX ((UV)UINT64_MAX)
2387 # define UINT64_MIN 0
2389 # define UV_MIN ((UV)UINT64_MIN)
2391 # define IV_MAX PERL_QUAD_MAX
2392 # define IV_MIN PERL_QUAD_MIN
2393 # define UV_MAX PERL_UQUAD_MAX
2394 # define UV_MIN PERL_UQUAD_MIN
2399 # if defined(INT32_MAX) && IVSIZE == 4
2400 # define IV_MAX ((IV)INT32_MAX)
2401 # define IV_MIN ((IV)INT32_MIN)
2402 # ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
2403 # define UV_MAX ((UV)UINT32_MAX)
2405 # define UV_MAX ((UV)4294967295U)
2408 # define UINT32_MIN 0
2410 # define UV_MIN ((UV)UINT32_MIN)
2412 # define IV_MAX PERL_LONG_MAX
2413 # define IV_MIN PERL_LONG_MIN
2414 # define UV_MAX PERL_ULONG_MAX
2415 # define UV_MIN PERL_ULONG_MIN
2426 #if !defined(PERL_CORE)
2427 /* We think that removing this decade-old undef this will cause too much
2428 breakage on CPAN for too little gain. (See RT #119753)
2429 However, we do need HAS_QUAD in the core for use by the drand48 code. */
2435 #define Size_t_MAX (~(Size_t)0)
2436 #define SSize_t_MAX (SSize_t)(~(Size_t)0 >> 1)
2438 #define IV_DIG (BIT_DIGITS(IVSIZE * 8))
2439 #define UV_DIG (BIT_DIGITS(UVSIZE * 8))
2441 #ifndef NO_PERL_PRESERVE_IVUV
2442 #define PERL_PRESERVE_IVUV /* We like our integers to stay integers. */
2446 * The macros INT2PTR and NUM2PTR are (despite their names)
2447 * bi-directional: they will convert int/float to or from pointers.
2448 * However the conversion to int/float are named explicitly:
2449 * PTR2IV, PTR2UV, PTR2NV.
2451 * For int conversions we do not need two casts if pointers are
2452 * the same size as IV and UV. Otherwise we need an explicit
2453 * cast (PTRV) to avoid compiler warnings.
2455 * These are mentioned in perlguts
2457 #if (IVSIZE == PTRSIZE) && (UVSIZE == PTRSIZE)
2459 # define INT2PTR(any,d) (any)(d)
2460 #elif PTRSIZE == LONGSIZE
2461 # define PTRV unsigned long
2462 # define PTR2ul(p) (unsigned long)(p)
2464 # define PTRV unsigned
2468 # define INT2PTR(any,d) (any)(PTRV)(d)
2472 # define PTR2ul(p) INT2PTR(unsigned long,p)
2476 =for apidoc_section $casting
2477 =for apidoc Cyh|type|NUM2PTR|type|int value
2478 You probably want to be using L<C</INT2PTR>> instead.
2483 #define NUM2PTR(any,d) (any)(PTRV)(d)
2484 #define PTR2IV(p) INT2PTR(IV,p)
2485 #define PTR2UV(p) INT2PTR(UV,p)
2486 #define PTR2NV(p) NUM2PTR(NV,p)
2487 #define PTR2nat(p) (PTRV)(p) /* pointer to integer of PTRSIZE */
2489 /* According to strict ANSI C89 one cannot freely cast between
2490 * data pointers and function (code) pointers. There are at least
2491 * two ways around this. One (used below) is to do two casts,
2492 * first the other pointer to an (unsigned) integer, and then
2493 * the integer to the other pointer. The other way would be
2494 * to use unions to "overlay" the pointers. For an example of
2495 * the latter technique, see union dirpu in struct xpvio in sv.h.
2496 * The only feasible use is probably temporarily storing
2497 * function pointers in a data pointer (such as a void pointer). */
2499 #define DPTR2FPTR(t,p) ((t)PTR2nat(p)) /* data pointer to function pointer */
2500 #define FPTR2DPTR(t,p) ((t)PTR2nat(p)) /* function pointer to data pointer */
2502 #ifdef USE_LONG_DOUBLE
2503 # if LONG_DOUBLESIZE == DOUBLESIZE
2504 # define LONG_DOUBLE_EQUALS_DOUBLE
2505 # undef USE_LONG_DOUBLE /* Ouch! */
2509 /* The following is all to get LDBL_DIG, in order to pick a nice
2510 default value for printing floating point numbers in Gconvert.
2513 #ifndef HAS_LDBL_DIG
2514 # if LONG_DOUBLESIZE == 10
2515 # define LDBL_DIG 18 /* assume IEEE */
2516 # elif LONG_DOUBLESIZE == 12
2517 # define LDBL_DIG 18 /* gcc? */
2518 # elif LONG_DOUBLESIZE == 16
2519 # define LDBL_DIG 33 /* assume IEEE */
2520 # elif LONG_DOUBLESIZE == DOUBLESIZE
2521 # define LDBL_DIG DBL_DIG /* bummer */
2525 /* On MS Windows,with 64-bit mingw-w64 compilers, we
2526 need to attend to a __float128 alignment issue if
2527 USE_QUADMATH is defined. Otherwise we simply:
2529 32-bit mingw.org compilers might also require
2530 aligned(32) - at least that's what I found with my
2531 Math::Foat128 module. But this is as yet untested
2532 here, so no allowance is being made for mingw.org
2533 compilers at this stage. -- sisyphus January 2021
2535 #if (defined(USE_LONG_DOUBLE) || defined(USE_QUADMATH)) && defined(__MINGW64__)
2536 /* 64-bit build, mingw-w64 compiler only */
2537 typedef NVTYPE NV __attribute__ ((aligned(8)));
2543 # include <ieeefp.h>
2546 #if defined(__DECC) && defined(__osf__)
2547 /* Also Tru64 cc has broken NaN comparisons. */
2548 # define NAN_COMPARE_BROKEN
2551 # define NAN_COMPARE_BROKEN
2554 #ifdef USE_LONG_DOUBLE
2556 # include <sunmath.h>
2558 # if defined(LDBL_DIG)
2559 # define NV_DIG LDBL_DIG
2560 # ifdef LDBL_MANT_DIG
2561 # define NV_MANT_DIG LDBL_MANT_DIG
2564 # define NV_MIN LDBL_MIN
2567 # define NV_MAX LDBL_MAX
2569 # ifdef LDBL_MIN_EXP
2570 # define NV_MIN_EXP LDBL_MIN_EXP
2572 # ifdef LDBL_MAX_EXP
2573 # define NV_MAX_EXP LDBL_MAX_EXP
2575 # ifdef LDBL_MIN_10_EXP
2576 # define NV_MIN_10_EXP LDBL_MIN_10_EXP
2578 # ifdef LDBL_MAX_10_EXP
2579 # define NV_MAX_10_EXP LDBL_MAX_10_EXP
2581 # ifdef LDBL_EPSILON
2582 # define NV_EPSILON LDBL_EPSILON
2585 # define NV_MAX LDBL_MAX
2586 /* Having LDBL_MAX doesn't necessarily mean that we have LDBL_MIN... -Allen */
2587 # elif defined(HUGE_VALL)
2588 # define NV_MAX HUGE_VALL
2591 # if defined(HAS_SQRTL)
2592 # define Perl_acos acosl
2593 # define Perl_asin asinl
2594 # define Perl_atan atanl
2595 # define Perl_atan2 atan2l
2596 # define Perl_ceil ceill
2597 # define Perl_cos cosl
2598 # define Perl_cosh coshl
2599 # define Perl_exp expl
2600 # define Perl_fabs fabsl
2601 # define Perl_floor floorl
2602 # define Perl_fmod fmodl
2603 # define Perl_log logl
2604 # define Perl_log10 log10l
2605 # define Perl_pow powl
2606 # define Perl_sin sinl
2607 # define Perl_sinh sinhl
2608 # define Perl_sqrt sqrtl
2609 # define Perl_tan tanl
2610 # define Perl_tanh tanhl
2612 /* e.g. libsunmath doesn't have modfl and frexpl as of mid-March 2000 */
2615 # define Perl_modf(x,y) modfl(x,y)
2616 /* eg glibc 2.2 series seems to provide modfl on ppc and arm, but has no
2617 prototype in <math.h> */
2618 # ifndef HAS_MODFL_PROTO
2619 EXTERN_C long double modfl(long double, long double *);
2621 # elif (defined(HAS_TRUNCL) || defined(HAS_AINTL)) && defined(HAS_COPYSIGNL)
2622 extern long double Perl_my_modfl(long double x, long double *ip);
2623 # define Perl_modf(x,y) Perl_my_modfl(x,y)
2628 # define Perl_frexp(x,y) frexpl(x,y)
2629 # elif defined(HAS_ILOGBL) && defined(HAS_SCALBNL)
2630 extern long double Perl_my_frexpl(long double x, int *e);
2631 # define Perl_frexp(x,y) Perl_my_frexpl(x,y)
2636 # define Perl_ldexp(x, y) ldexpl(x,y)
2637 # elif defined(HAS_SCALBNL) && FLT_RADIX == 2
2638 # define Perl_ldexp(x,y) scalbnl(x,y)
2642 # if defined(HAS_ISNANL) && !(defined(isnan) && defined(HAS_C99))
2643 # define Perl_isnan(x) isnanl(x)
2644 # elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
2645 # define Perl_isnan(x) isnan(x)
2649 # if defined(HAS_ISINFL) && !(defined(isinf) && defined(HAS_C99))
2650 # define Perl_isinf(x) isinfl(x)
2651 # elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
2652 # define Perl_isinf(x) isinf(x)
2653 # elif defined(LDBL_MAX) && !defined(NAN_COMPARE_BROKEN)
2654 # define Perl_isinf(x) ((x) > LDBL_MAX || (x) < -LDBL_MAX)
2657 # ifndef Perl_isfinite
2658 # define Perl_isfinite(x) Perl_isfinitel(x)
2660 #elif defined(USE_QUADMATH) && defined(I_QUADMATH)
2661 # include <quadmath.h>
2662 # define NV_DIG FLT128_DIG
2663 # define NV_MANT_DIG FLT128_MANT_DIG
2664 # define NV_MIN FLT128_MIN
2665 # define NV_MAX FLT128_MAX
2666 # define NV_MIN_EXP FLT128_MIN_EXP
2667 # define NV_MAX_EXP FLT128_MAX_EXP
2668 # define NV_EPSILON FLT128_EPSILON
2669 # define NV_MIN_10_EXP FLT128_MIN_10_EXP
2670 # define NV_MAX_10_EXP FLT128_MAX_10_EXP
2671 # define Perl_acos acosq
2672 # define Perl_asin asinq
2673 # define Perl_atan atanq
2674 # define Perl_atan2 atan2q
2675 # define Perl_ceil ceilq
2676 # define Perl_cos cosq
2677 # define Perl_cosh coshq
2678 # define Perl_exp expq
2679 # define Perl_fabs fabsq
2680 # define Perl_floor floorq
2681 # define Perl_fmod fmodq
2682 # define Perl_log logq
2683 # define Perl_log10 log10q
2684 # define Perl_signbit signbitq
2685 # define Perl_pow powq
2686 # define Perl_sin sinq
2687 # define Perl_sinh sinhq
2688 # define Perl_sqrt sqrtq
2689 # define Perl_tan tanq
2690 # define Perl_tanh tanhq
2691 # define Perl_modf(x,y) modfq(x,y)
2692 # define Perl_frexp(x,y) frexpq(x,y)
2693 # define Perl_ldexp(x, y) ldexpq(x,y)
2694 # define Perl_isinf(x) isinfq(x)
2695 # define Perl_isnan(x) isnanq(x)
2696 # define Perl_isfinite(x) (!(isnanq(x) || isinfq(x)))
2697 # define Perl_fp_class(x) ((x) == 0.0Q ? 0 : isinfq(x) ? 3 : isnanq(x) ? 4 : PERL_ABS(x) < FLT128_MIN ? 2 : 1)
2698 # define Perl_fp_class_inf(x) (Perl_fp_class(x) == 3)
2699 # define Perl_fp_class_nan(x) (Perl_fp_class(x) == 4)
2700 # define Perl_fp_class_norm(x) (Perl_fp_class(x) == 1)
2701 # define Perl_fp_class_denorm(x) (Perl_fp_class(x) == 2)
2702 # define Perl_fp_class_zero(x) (Perl_fp_class(x) == 0)
2704 # define NV_DIG DBL_DIG
2705 # define NV_MANT_DIG DBL_MANT_DIG
2706 # define NV_MIN DBL_MIN
2707 # define NV_MAX DBL_MAX
2708 # define NV_MIN_EXP DBL_MIN_EXP
2709 # define NV_MAX_EXP DBL_MAX_EXP
2710 # define NV_MIN_10_EXP DBL_MIN_10_EXP
2711 # define NV_MAX_10_EXP DBL_MAX_10_EXP
2712 # define NV_EPSILON DBL_EPSILON
2713 # define NV_MAX DBL_MAX
2714 # define NV_MIN DBL_MIN
2716 /* These math interfaces are C89. */
2717 # define Perl_acos acos
2718 # define Perl_asin asin
2719 # define Perl_atan atan
2720 # define Perl_atan2 atan2
2721 # define Perl_ceil ceil
2722 # define Perl_cos cos
2723 # define Perl_cosh cosh
2724 # define Perl_exp exp
2725 # define Perl_fabs fabs
2726 # define Perl_floor floor
2727 # define Perl_fmod fmod
2728 # define Perl_log log
2729 # define Perl_log10 log10
2730 # define Perl_pow pow
2731 # define Perl_sin sin
2732 # define Perl_sinh sinh
2733 # define Perl_sqrt sqrt
2734 # define Perl_tan tan
2735 # define Perl_tanh tanh
2737 # define Perl_modf(x,y) modf(x,y)
2738 # define Perl_frexp(x,y) frexp(x,y)
2739 # define Perl_ldexp(x,y) ldexp(x,y)
2743 # define Perl_isnan(x) isnan(x)
2747 # if defined(HAS_ISINF)
2748 # define Perl_isinf(x) isinf(x)
2749 # elif defined(DBL_MAX) && !defined(NAN_COMPARE_BROKEN)
2750 # define Perl_isinf(x) ((x) > DBL_MAX || (x) < -DBL_MAX)
2753 # ifndef Perl_isfinite
2754 # ifdef HAS_ISFINITE
2755 # define Perl_isfinite(x) isfinite(x)
2756 # elif defined(HAS_FINITE)
2757 # define Perl_isfinite(x) finite(x)
2762 /* fpclassify(): C99. It is supposed to be a macro that switches on
2763 * the sizeof() of its argument, so there's no need for e.g. fpclassifyl().*/
2764 #if !defined(Perl_fp_class) && defined(HAS_FPCLASSIFY)
2766 # if defined(FP_INFINITE) && defined(FP_NAN)
2767 # define Perl_fp_class(x) fpclassify(x)
2768 # define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2769 # define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2770 # define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2771 # define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2772 # define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2773 # elif defined(FP_PLUS_INF) && defined(FP_QNAN)
2774 /* Some versions of HP-UX (10.20) have (only) fpclassify() but which is
2775 * actually not the C99 fpclassify, with its own set of return defines. */
2776 # define Perl_fp_class(x) fpclassify(x)
2777 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2778 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2779 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2780 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2781 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
2782 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2783 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2784 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2785 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2786 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2788 # undef Perl_fp_class /* Unknown set of defines */
2792 /* fp_classify(): Legacy: VMS, maybe Unicos? The values, however,
2793 * are identical to the C99 fpclassify(). */
2794 #if !defined(Perl_fp_class) && defined(HAS_FP_CLASSIFY)
2797 /* FP_INFINITE and others are here rather than in math.h as C99 stipulates */
2799 /* oh, and the isnormal macro has a typo in it! */
2801 # define isnormal(x) Perl_fp_class_norm(x)
2803 # if defined(FP_INFINITE) && defined(FP_NAN)
2804 # define Perl_fp_class(x) fp_classify(x)
2805 # define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2806 # define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2807 # define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2808 # define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2809 # define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2811 # undef Perl_fp_class /* Unknown set of defines */
2815 /* Feel free to check with me for the SGI manpages, SGI testing,
2816 * etcetera, if you want to try getting this to work with IRIX.
2818 * - Allen <allens@cpan.org> */
2820 /* fpclass(): SysV, at least Solaris and some versions of IRIX. */
2821 #if !defined(Perl_fp_class) && (defined(HAS_FPCLASS)||defined(HAS_FPCLASSL))
2822 /* Solaris and IRIX have fpclass/fpclassl, but they are using
2823 * an enum typedef, not cpp symbols, and Configure doesn't detect that.
2824 * Define some symbols also as cpp symbols so we can detect them. */
2825 # if defined(__sun) || defined(__sgi) /* XXX Configure test instead */
2826 # define FP_PINF FP_PINF
2827 # define FP_QNAN FP_QNAN
2831 # include <ieeefp.h>
2836 # if defined(USE_LONG_DOUBLE) && defined(HAS_FPCLASSL)
2837 # define Perl_fp_class(x) fpclassl(x)
2839 # define Perl_fp_class(x) fpclass(x)
2841 # if defined(FP_CLASS_PINF) && defined(FP_CLASS_SNAN)
2842 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_CLASS_SNAN)
2843 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_CLASS_QNAN)
2844 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_CLASS_NINF)
2845 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_CLASS_PINF)
2846 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_CLASS_NNORM)
2847 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_CLASS_PNORM)
2848 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_CLASS_NDENORM)
2849 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_CLASS_PDENORM)
2850 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_CLASS_NZERO)
2851 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_CLASS_PZERO)
2852 # elif defined(FP_PINF) && defined(FP_QNAN)
2853 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2854 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2855 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NINF)
2856 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PINF)
2857 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NNORM)
2858 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PNORM)
2859 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NDENORM)
2860 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PDENORM)
2861 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NZERO)
2862 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PZERO)
2864 # undef Perl_fp_class /* Unknown set of defines */
2868 /* fp_class(): Legacy: at least Tru64, some versions of IRIX. */
2869 #if !defined(Perl_fp_class) && (defined(HAS_FP_CLASS)||defined(HAS_FP_CLASSL))
2871 # if !defined(FP_SNAN) && defined(I_FP_CLASS)
2872 # include <fp_class.h>
2874 # if defined(FP_POS_INF) && defined(FP_QNAN)
2875 # ifdef __sgi /* XXX Configure test instead */
2876 # ifdef USE_LONG_DOUBLE
2877 # define Perl_fp_class(x) fp_class_l(x)
2879 # define Perl_fp_class(x) fp_class_d(x)
2882 # if defined(USE_LONG_DOUBLE) && defined(HAS_FP_CLASSL)
2883 # define Perl_fp_class(x) fp_classl(x)
2885 # define Perl_fp_class(x) fp_class(x)
2888 # if defined(FP_POS_INF) && defined(FP_QNAN)
2889 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2890 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2891 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NEG_INF)
2892 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_POS_INF)
2893 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NEG_NORM)
2894 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_POS_NORM)
2895 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NEG_DENORM)
2896 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_POS_DENORM)
2897 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NEG_ZERO)
2898 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_POS_ZERO)
2900 # undef Perl_fp_class /* Unknown set of defines */
2905 /* class(), _class(): Legacy: AIX. */
2906 #if !defined(Perl_fp_class) && defined(HAS_CLASS)
2908 # if defined(FP_PLUS_NORM) && defined(FP_PLUS_INF)
2910 # define Perl_fp_class(x) class(x)
2912 # define Perl_fp_class(x) _class(x)
2914 # if defined(FP_PLUS_INF) && defined(FP_NANQ)
2915 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_NANS)
2916 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_NANQ)
2917 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2918 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2919 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2920 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
2921 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2922 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2923 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2924 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2926 # undef Perl_fp_class /* Unknown set of defines */
2931 /* Win32: _fpclass(), _isnan(), _finite(). */
2934 # define Perl_isnan(x) _isnan(x)
2936 # ifndef Perl_isfinite
2937 # define Perl_isfinite(x) _finite(x)
2939 # ifndef Perl_fp_class_snan
2940 /* No simple way to #define Perl_fp_class because _fpclass()
2941 * returns a set of bits. */
2942 # define Perl_fp_class_snan(x) (_fpclass(x) & _FPCLASS_SNAN)
2943 # define Perl_fp_class_qnan(x) (_fpclass(x) & _FPCLASS_QNAN)
2944 # define Perl_fp_class_nan(x) (_fpclass(x) & (_FPCLASS_SNAN|_FPCLASS_QNAN))
2945 # define Perl_fp_class_ninf(x) (_fpclass(x) & _FPCLASS_NINF)
2946 # define Perl_fp_class_pinf(x) (_fpclass(x) & _FPCLASS_PINF)
2947 # define Perl_fp_class_inf(x) (_fpclass(x) & (_FPCLASS_NINF|_FPCLASS_PINF))
2948 # define Perl_fp_class_nnorm(x) (_fpclass(x) & _FPCLASS_NN)
2949 # define Perl_fp_class_pnorm(x) (_fpclass(x) & _FPCLASS_PN)
2950 # define Perl_fp_class_norm(x) (_fpclass(x) & (_FPCLASS_NN|_FPCLASS_PN))
2951 # define Perl_fp_class_ndenorm(x) (_fpclass(x) & _FPCLASS_ND)
2952 # define Perl_fp_class_pdenorm(x) (_fpclass(x) & _FPCLASS_PD)
2953 # define Perl_fp_class_denorm(x) (_fpclass(x) & (_FPCLASS_ND|_FPCLASS_PD))
2954 # define Perl_fp_class_nzero(x) (_fpclass(x) & _FPCLASS_NZ)
2955 # define Perl_fp_class_pzero(x) (_fpclass(x) & _FPCLASS_PZ)
2956 # define Perl_fp_class_zero(x) (_fpclass(x) & (_FPCLASS_NZ|_FPCLASS_PZ))
2960 #if !defined(Perl_fp_class_inf) && \
2961 defined(Perl_fp_class_pinf) && defined(Perl_fp_class_ninf)
2962 # define Perl_fp_class_inf(x) \
2963 (Perl_fp_class_pinf(x) || Perl_fp_class_ninf(x))
2966 #if !defined(Perl_fp_class_nan) && \
2967 defined(Perl_fp_class_snan) && defined(Perl_fp_class_qnan)
2968 # define Perl_fp_class_nan(x) \
2969 (Perl_fp_class_snan(x) || Perl_fp_class_qnan(x))
2972 #if !defined(Perl_fp_class_zero) && \
2973 defined(Perl_fp_class_pzero) && defined(Perl_fp_class_nzero)
2974 # define Perl_fp_class_zero(x) \
2975 (Perl_fp_class_pzero(x) || Perl_fp_class_nzero(x))
2978 #if !defined(Perl_fp_class_norm) && \
2979 defined(Perl_fp_class_pnorm) && defined(Perl_fp_class_nnorm)
2980 # define Perl_fp_class_norm(x) \
2981 (Perl_fp_class_pnorm(x) || Perl_fp_class_nnorm(x))
2984 #if !defined(Perl_fp_class_denorm) && \
2985 defined(Perl_fp_class_pdenorm) && defined(Perl_fp_class_ndenorm)
2986 # define Perl_fp_class_denorm(x) \
2987 (Perl_fp_class_pdenorm(x) || Perl_fp_class_ndenorm(x))
2991 # ifdef Perl_fp_class_nan
2992 # define Perl_isnan(x) Perl_fp_class_nan(x)
2993 # elif defined(HAS_UNORDERED)
2994 # define Perl_isnan(x) unordered((x), 0.0)
2996 # define Perl_isnan(x) ((x)!=(x))
3001 # ifdef Perl_fp_class_inf
3002 # define Perl_isinf(x) Perl_fp_class_inf(x)
3006 #ifndef Perl_isfinite
3007 # if defined(HAS_ISFINITE) && !defined(isfinite)
3008 # define Perl_isfinite(x) isfinite((double)(x))
3009 # elif defined(HAS_FINITE)
3010 # define Perl_isfinite(x) finite((double)(x))
3011 # elif defined(Perl_fp_class_finite)
3012 # define Perl_isfinite(x) Perl_fp_class_finite(x)
3014 /* For the infinities the multiplication returns nan,
3015 * for the nan the multiplication also returns nan,
3016 * for everything else (that is, finite) zero should be returned. */
3017 # define Perl_isfinite(x) (((x) * 0) == 0)
3022 # if defined(Perl_isfinite) && defined(Perl_isnan)
3023 # define Perl_isinf(x) (!(Perl_isfinite(x)||Perl_isnan(x)))
3027 /* We need Perl_isfinitel (ends with ell) (if available) even when
3028 * not USE_LONG_DOUBLE because the printf code (sv_catpvfn_flags)
3030 #if defined(HAS_LONG_DOUBLE) && !defined(Perl_isfinitel)
3031 /* If isfinite() is a macro and looks like we have C99,
3032 * we assume it's the type-aware C99 isfinite(). */
3033 # if defined(HAS_ISFINITE) && defined(isfinite) && defined(HAS_C99)
3034 # define Perl_isfinitel(x) isfinite(x)
3035 # elif defined(HAS_ISFINITEL)
3036 # define Perl_isfinitel(x) isfinitel(x)
3037 # elif defined(HAS_FINITEL)
3038 # define Perl_isfinitel(x) finitel(x)
3039 # elif defined(HAS_ISINFL) && defined(HAS_ISNANL)
3040 # define Perl_isfinitel(x) (!(isinfl(x)||isnanl(x)))
3042 # define Perl_isfinitel(x) ((x) * 0 == 0) /* See Perl_isfinite. */
3046 /* The default is to use Perl's own atof() implementation (in numeric.c).
3047 * This knows about if 'use locale' is in effect or not, and handles the radix
3048 * character accordingly. On some platforms (e.g. UNICOS) it is however best
3049 * to use the native implementation of atof, as long as you accept that the
3050 * current underlying locale will affect the radix character. Perl's version
3051 * uses a dot for a radix, execpt within the lexical scope of a Perl C<use
3052 * locale> statement.
3054 * You can experiment with using your native one by -DUSE_PERL_ATOF=0.
3055 * Some good tests to try out with either setting are t/base/num.t,
3056 * t/op/numconvert.t, and t/op/pack.t. Note that if using long doubles
3057 * you may need to be using a different function than atof! */
3059 #ifndef USE_PERL_ATOF
3061 # define USE_PERL_ATOF
3064 # if USE_PERL_ATOF == 0
3065 # undef USE_PERL_ATOF
3069 #ifdef USE_PERL_ATOF
3070 # define Perl_atof(s) Perl_my_atof(aTHX_ s)
3071 # define Perl_atof2(s, n) Perl_my_atof3(aTHX_ (s), &(n), 0)
3073 # define Perl_atof(s) (NV)atof(s)
3074 # define Perl_atof2(s, n) ((n) = atof(s))
3076 #define my_atof2(a,b) my_atof3(a,b,0)
3079 =for apidoc AmTR|NV|Atof|NN const char * const s
3081 This is a synonym for L</C<my_atof>>.
3087 #define Atof my_atof
3090 =for apidoc_section $numeric
3091 =for apidoc AmT|NV|Perl_acos|NV x
3092 =for apidoc_item |NV|Perl_asin|NV x
3093 =for apidoc_item |NV|Perl_atan|NV x
3094 =for apidoc_item |NV|Perl_atan2|NV x|NV y
3095 =for apidoc_item |NV|Perl_ceil|NV x
3096 =for apidoc_item |NV|Perl_cos|NV x
3097 =for apidoc_item |NV|Perl_cosh|NV x
3098 =for apidoc_item |NV|Perl_exp|NV x
3099 =for apidoc_item |NV|Perl_floor|NV x
3100 =for apidoc_item |NV|Perl_fmod|NV x|NV y
3101 =for apidoc_item |NV|Perl_frexp|NV x|int *exp
3102 =for apidoc_item |IV|Perl_isfinite|NV x
3103 =for apidoc_item |IV|Perl_isinf|NV x
3104 =for apidoc_item |IV|Perl_isnan|NV x
3105 =for apidoc_item |NV|Perl_ldexp|NV x|int exp
3106 =for apidoc_item |NV|Perl_log|NV x
3107 =for apidoc_item |NV|Perl_log10|NV x
3108 =for apidoc_item |NV|Perl_modf|NV x|NV *iptr
3109 =for apidoc_item |NV|Perl_pow|NV x|NV y
3110 =for apidoc_item |NV|Perl_sin|NV x
3111 =for apidoc_item |NV|Perl_sinh|NV x
3112 =for apidoc_item |NV|Perl_sqrt|NV x
3113 =for apidoc_item |NV|Perl_tan|NV x
3114 =for apidoc_item |NV|Perl_tanh|NV x
3116 These perform the corresponding mathematical operation on the operand(s), using
3117 the libc function designed for the task that has just enough precision for an
3118 NV on this platform. If no such function with sufficient precision exists,
3119 the highest precision one available is used.
3126 * CHAR_MIN and CHAR_MAX are not included here, as the (char) type may be
3127 * ambiguous. It may be equivalent to (signed char) or (unsigned char)
3128 * depending on local options. Until Configure detects this (or at least
3129 * detects whether the "signed" keyword is available) the CHAR ranges
3130 * will not be included. UCHAR functions normally.
3134 #define PERL_UCHAR_MIN ((unsigned char)0)
3135 #define PERL_UCHAR_MAX ((unsigned char)UCHAR_MAX)
3137 #define PERL_USHORT_MIN ((unsigned short)0)
3138 #define PERL_USHORT_MAX ((unsigned short)USHRT_MAX)
3140 #define PERL_SHORT_MAX ((short)SHRT_MAX)
3141 #define PERL_SHORT_MIN ((short)SHRT_MIN)
3143 #define PERL_UINT_MAX ((unsigned int)UINT_MAX)
3144 #define PERL_UINT_MIN ((unsigned int)0)
3146 #define PERL_INT_MAX ((int)INT_MAX)
3147 #define PERL_INT_MIN ((int)INT_MIN)
3149 #define PERL_ULONG_MAX ((unsigned long)ULONG_MAX)
3150 #define PERL_ULONG_MIN ((unsigned long)0L)
3152 #define PERL_LONG_MAX ((long)LONG_MAX)
3153 #define PERL_LONG_MIN ((long)LONG_MIN)
3156 # define PERL_UQUAD_MAX (~(UV)0)
3157 # define PERL_UQUAD_MIN ((UV)0)
3158 # define PERL_QUAD_MAX ((IV) (PERL_UQUAD_MAX >> 1))
3159 # define PERL_QUAD_MIN (-PERL_QUAD_MAX - ((3 & -1) == 3))
3163 =for apidoc_section $integer
3165 =for apidoc Amn |int|PERL_INT_MAX
3166 =for apidoc_item |int|PERL_INT_MIN
3167 =for apidoc_item |long|PERL_LONG_MAX
3168 =for apidoc_item |long|PERL_LONG_MIN
3169 =for apidoc_item |IV|PERL_QUAD_MAX
3170 =for apidoc_item |IV|PERL_QUAD_MIN
3171 =for apidoc_item |short|PERL_SHORT_MAX
3172 =for apidoc_item |short|PERL_SHORT_MIN
3173 =for apidoc_item |U8|PERL_UCHAR_MAX
3174 =for apidoc_item |U8|PERL_UCHAR_MIN
3175 =for apidoc_item |unsigned int|PERL_UINT_MAX
3176 =for apidoc_item |unsigned int|PERL_UINT_MIN
3177 =for apidoc_item |unsigned long|PERL_ULONG_MAX
3178 =for apidoc_item |unsigned long|PERL_ULONG_MIN
3179 =for apidoc_item |UV|PERL_UQUAD_MAX
3180 =for apidoc_item |UV|PERL_UQUAD_MIN
3181 =for apidoc_item |unsigned short|PERL_USHORT_MAX
3182 =for apidoc_item |unsigned short|PERL_USHORT_MIN
3184 These give the largest and smallest number representable in the current
3185 platform in variables of the corresponding types.
3187 For signed types, the smallest representable number is the most negative
3188 number, the one furthest away from zero.
3190 For C99 and later compilers, these correspond to things like C<INT_MAX>, which
3191 are available to the C code. But these constants, furnished by Perl,
3192 allow code compiled on earlier compilers to portably have access to the same
3199 typedef MEM_SIZE STRLEN;
3201 typedef struct op OP;
3202 typedef struct cop COP;
3203 typedef struct unop UNOP;
3204 typedef struct unop_aux UNOP_AUX;
3205 typedef struct binop BINOP;
3206 typedef struct listop LISTOP;
3207 typedef struct logop LOGOP;
3208 typedef struct pmop PMOP;
3209 typedef struct svop SVOP;
3210 typedef struct padop PADOP;
3211 typedef struct pvop PVOP;
3212 typedef struct loop LOOP;
3213 typedef struct methop METHOP;
3216 typedef struct opslab OPSLAB;
3217 typedef struct opslot OPSLOT;
3220 typedef struct block_hooks BHK;
3221 typedef struct custom_op XOP;
3223 typedef struct interpreter PerlInterpreter;
3225 /* SGI's <sys/sema.h> has struct sv */
3227 # define STRUCT_SV perl_sv
3229 # define STRUCT_SV sv
3231 typedef struct STRUCT_SV SV;
3232 typedef struct av AV;
3233 typedef struct hv HV;
3234 typedef struct cv CV;
3235 typedef struct p5rx REGEXP;
3236 typedef struct gp GP;
3237 typedef struct gv GV;
3238 typedef struct io IO;
3239 typedef struct context PERL_CONTEXT;
3240 typedef struct block BLOCK;
3241 typedef struct invlist INVLIST;
3243 typedef struct magic MAGIC;
3244 typedef struct xpv XPV;
3245 typedef struct xpviv XPVIV;
3246 typedef struct xpvuv XPVUV;
3247 typedef struct xpvnv XPVNV;
3248 typedef struct xpvmg XPVMG;
3249 typedef struct xpvlv XPVLV;
3250 typedef struct xpvinvlist XINVLIST;
3251 typedef struct xpvav XPVAV;
3252 typedef struct xpvhv XPVHV;
3253 typedef struct xpvgv XPVGV;
3254 typedef struct xpvcv XPVCV;
3255 typedef struct xpvbm XPVBM;
3256 typedef struct xpvfm XPVFM;
3257 typedef struct xpvio XPVIO;
3258 typedef struct xobject XPVOBJ;
3259 typedef struct mgvtbl MGVTBL;
3260 typedef union any ANY;
3261 typedef struct ptr_tbl_ent PTR_TBL_ENT_t;
3262 typedef struct ptr_tbl PTR_TBL_t;
3263 typedef struct clone_params CLONE_PARAMS;
3265 /* a pad is currently just an AV; but that might change,
3266 * so hide the type. */
3267 typedef struct padlist PADLIST;
3269 typedef struct padnamelist PADNAMELIST;
3270 typedef struct padname PADNAME;
3272 /* always enable PERL_OP_PARENT */
3273 #if !defined(PERL_OP_PARENT)
3274 # define PERL_OP_PARENT
3277 /* enable PERL_COPY_ON_WRITE by default */
3278 #if !defined(PERL_COPY_ON_WRITE) && !defined(PERL_NO_COW)
3279 # define PERL_COPY_ON_WRITE
3282 #ifdef PERL_COPY_ON_WRITE
3283 # define PERL_ANY_COW
3285 # define PERL_SAWAMPERSAND
3288 #if defined(PERL_DEBUG_READONLY_OPS) && !defined(USE_ITHREADS)
3289 # error PERL_DEBUG_READONLY_OPS only works with ithreads
3293 #include "charclass_invlists.h"
3295 #if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_RAWIO)
3296 # if LSEEKSIZE == 8 && !defined(USE_64_BIT_RAWIO)
3297 # define USE_64_BIT_RAWIO /* implicit */
3301 /* Notice the use of HAS_FSEEKO: now we are obligated to always use
3302 * fseeko/ftello if possible. Don't go #defining ftell to ftello yourself,
3303 * however, because operating systems like to do that themself. */
3306 # define FSEEKSIZE LSEEKSIZE
3308 # define FSEEKSIZE LONGSIZE
3312 #if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_STDIO)
3313 # if FSEEKSIZE == 8 && !defined(USE_64_BIT_STDIO)
3314 # define USE_64_BIT_STDIO /* implicit */
3318 #ifdef USE_64_BIT_RAWIO
3321 # define Off_t off64_t
3323 # define LSEEKSIZE 8
3325 /* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
3326 * will trigger defines like the ones below. Some 64-bit environments,
3327 * however, do not. Therefore we have to explicitly mix and match. */
3328 # if defined(USE_OPEN64)
3329 # define open open64
3331 # if defined(USE_LSEEK64)
3332 # define lseek lseek64
3334 # if defined(USE_LLSEEK)
3335 # define lseek llseek
3338 # if defined(USE_STAT64)
3339 # define stat stat64
3341 # if defined(USE_FSTAT64)
3342 # define fstat fstat64
3344 # if defined(USE_LSTAT64)
3345 # define lstat lstat64
3347 # if defined(USE_FLOCK64)
3348 # define flock flock64
3350 # if defined(USE_LOCKF64)
3351 # define lockf lockf64
3353 # if defined(USE_FCNTL64)
3354 # define fcntl fcntl64
3356 # if defined(USE_TRUNCATE64)
3357 # define truncate truncate64
3359 # if defined(USE_FTRUNCATE64)
3360 # define ftruncate ftruncate64
3364 #ifdef USE_64_BIT_STDIO
3365 # ifdef HAS_FPOS64_T
3367 # define Fpos_t fpos64_t
3369 /* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
3370 * will trigger defines like the ones below. Some 64-bit environments,
3371 * however, do not. */
3372 # if defined(USE_FOPEN64)
3373 # define fopen fopen64
3375 # if defined(USE_FSEEK64)
3376 # define fseek fseek64 /* don't do fseeko here, see perlio.c */
3378 # if defined(USE_FTELL64)
3379 # define ftell ftell64 /* don't do ftello here, see perlio.c */
3381 # if defined(USE_FSETPOS64)
3382 # define fsetpos fsetpos64
3384 # if defined(USE_FGETPOS64)
3385 # define fgetpos fgetpos64
3387 # if defined(USE_TMPFILE64)
3388 # define tmpfile tmpfile64
3390 # if defined(USE_FREOPEN64)
3391 # define freopen freopen64
3396 # include "iperlsys.h"
3401 # include "os2ish.h"
3403 # include "dosish.h"
3406 # include "vmsish.h"
3407 #elif defined(PLAN9)
3408 # include "./plan9/plan9ish.h"
3409 #elif defined(__VOS__)
3411 # include "./vos/vosish.h"
3413 # include "vos/vosish.h"
3415 #elif defined(__HAIKU__)
3416 # include "haiku/haikuish.h"
3418 # include "unixish.h"
3422 # include "amigaos.h"
3423 # undef FD_CLOEXEC /* a lie in AmigaOS */
3426 /* NSIG logic from Configure --> */
3429 # define NSIG (_NSIG)
3430 # elif defined(SIGMAX)
3431 # define NSIG (SIGMAX+1)
3432 # elif defined(SIG_MAX)
3433 # define NSIG (SIG_MAX+1)
3434 # elif defined(_SIG_MAX)
3435 # define NSIG (_SIG_MAX+1)
3436 # elif defined(MAXSIG)
3437 # define NSIG (MAXSIG+1)
3438 # elif defined(MAX_SIG)
3439 # define NSIG (MAX_SIG+1)
3440 # elif defined(SIGARRAYSIZE)
3441 # define NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
3442 # elif defined(_sys_nsig)
3443 # define NSIG (_sys_nsig) /* Solaris 2.5 */
3445 /* Default to some arbitrary number that's big enough to get most
3446 * of the common signals. */
3450 /* <-- NSIG logic from Configure */
3452 #ifndef NO_ENVIRON_ARRAY
3453 # define USE_ENVIRON_ARRAY
3456 #if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
3457 /* having sigaction(2) means that the OS supports both 1-arg and 3-arg
3458 * signal handlers. But the perl core itself only fully supports 1-arg
3459 * handlers, so don't enable for now.
3460 * NB: POSIX::sigaction() supports both.
3462 * # define PERL_USE_3ARG_SIGHANDLER
3467 * This is an alias for the OS's siginfo_t, except that where the OS
3468 * doesn't support it, declare a dummy version instead. This allows us to
3469 * have signal handler functions which always have a Siginfo_t parameter
3470 * regardless of platform, (and which will just be passed a NULL value
3471 * where the OS doesn't support HAS_SIGACTION).
3474 #if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
3475 typedef siginfo_t Siginfo_t;
3477 #ifdef si_signo /* minix */
3487 * initialise to avoid floating-point exceptions from overflow, etc
3489 #ifndef PERL_FPU_INIT
3490 # ifdef HAS_FPSETMASK
3491 # if HAS_FLOATINGPOINT_H
3492 # include <floatingpoint.h>
3494 /* Some operating systems have this as a macro, which in turn expands to a comma
3495 expression, and the last sub-expression is something that gets calculated,
3496 and then they have the gall to warn that a value computed is not used. Hence
3498 # define PERL_FPU_INIT (void)fpsetmask(0)
3499 # elif defined(SIGFPE) && defined(SIG_IGN)
3500 # define PERL_FPU_INIT PL_sigfpe_saved = (Sighandler_t) signal(SIGFPE, SIG_IGN)
3501 # define PERL_FPU_PRE_EXEC { Sigsave_t xfpe; rsignal_save(SIGFPE, PL_sigfpe_saved, &xfpe);
3502 # define PERL_FPU_POST_EXEC rsignal_restore(SIGFPE, &xfpe); }
3504 # define PERL_FPU_INIT
3507 #ifndef PERL_FPU_PRE_EXEC
3508 # define PERL_FPU_PRE_EXEC {
3509 # define PERL_FPU_POST_EXEC }
3512 /* In Tru64 the cc -ieee enables the IEEE math but disables traps.
3513 * We need to reenable the "invalid" trap because otherwise generation
3514 * of NaN values leaves the IEEE fp flags in bad state, leaving any further
3515 * fp ops behaving strangely (Inf + 1 resulting in zero, for example). */
3517 # include <machine/fpu.h>
3518 # define PERL_SYS_FPU_INIT \
3520 ieee_set_fp_control(IEEE_TRAP_ENABLE_INV); \
3521 signal(SIGFPE, SIG_IGN); \
3524 /* In IRIX the default for Flush to Zero bit is true,
3525 * which means that results going below the minimum of normal
3526 * floating points go to zero, instead of going denormal/subnormal.
3527 * This is unlike almost any other system running Perl, so let's clear it.
3528 * [perl #123767] IRIX64 blead (ddce084a) opbasic/arith.t failure, originally
3529 * [perl #120426] small numbers shouldn't round to zero if they have extra floating digits
3531 * XXX The flush-to-zero behaviour should be a Configure scan.
3532 * To change the behaviour usually requires some system-specific
3533 * incantation, though, like the below. */
3535 # include <sys/fpu.h>
3536 # define PERL_SYS_FPU_INIT \
3538 union fpc_csr csr; \
3539 csr.fc_word = get_fpc_csr(); \
3540 csr.fc_struct.flush = 0; \
3541 set_fpc_csr(csr.fc_word); \
3545 #ifndef PERL_SYS_FPU_INIT
3546 # define PERL_SYS_FPU_INIT NOOP
3549 #ifndef PERL_SYS_INIT3_BODY
3550 # define PERL_SYS_INIT3_BODY(argvp,argcp,envp) PERL_SYS_INIT_BODY(argvp,argcp)
3554 =for apidoc_section $embedding
3556 =for apidoc Am|void|PERL_SYS_INIT |int *argc|char*** argv
3557 =for apidoc_item| |PERL_SYS_INIT3|int *argc|char*** argv|char*** env
3559 These provide system-specific tune up of the C runtime environment necessary to
3560 run Perl interpreters. Only one should be used, and it should be called only
3561 once, before creating any Perl interpreters.
3563 They differ in that C<PERL_SYS_INIT3> also initializes C<env>.
3565 =for apidoc Am|void|PERL_SYS_TERM|
3566 Provides system-specific clean up of the C runtime environment after
3567 running Perl interpreters. This should be called only once, after
3568 freeing any remaining Perl interpreters.
3573 #define PERL_SYS_INIT(argc, argv) Perl_sys_init(argc, argv)
3574 #define PERL_SYS_INIT3(argc, argv, env) Perl_sys_init3(argc, argv, env)
3575 #define PERL_SYS_TERM() Perl_sys_term()
3577 #ifndef PERL_WRITE_MSG_TO_CONSOLE
3578 # define PERL_WRITE_MSG_TO_CONSOLE(io, msg, len) PerlIO_write(io, msg, len)
3583 # ifdef _POSIX_PATH_MAX
3584 # if PATH_MAX > _POSIX_PATH_MAX
3585 /* POSIX 1990 (and pre) was ambiguous about whether PATH_MAX
3586 * included the null byte or not. Later amendments of POSIX,
3587 * XPG4, the Austin Group, and the Single UNIX Specification
3588 * all explicitly include the null byte in the PATH_MAX.
3589 * Ditto for _POSIX_PATH_MAX. */
3590 # define MAXPATHLEN PATH_MAX
3592 # define MAXPATHLEN _POSIX_PATH_MAX
3595 # define MAXPATHLEN (PATH_MAX+1)
3598 # define MAXPATHLEN 1024 /* Err on the large side. */
3602 /* clang Thread Safety Analysis/Annotations/Attributes
3603 * http://clang.llvm.org/docs/ThreadSafetyAnalysis.html
3605 * Available since clang 3.6-ish (appeared in 3.4, but shaky still in 3.5).
3606 * Apple XCode hijacks __clang_major__ and __clang_minor__
3607 * (6.1 means really clang 3.6), so needs extra hijinks
3608 * (could probably also test the contents of __apple_build_version__).
3610 #if defined(USE_ITHREADS) && defined(I_PTHREAD) && \
3611 defined(__clang__) && \
3613 ((!defined(__apple_build_version__) && \
3614 ((__clang_major__ == 3 && __clang_minor__ >= 6) || \
3615 (__clang_major__ >= 4))) || \
3616 (defined(__apple_build_version__) && \
3617 ((__clang_major__ == 6 && __clang_minor__ >= 1) || \
3618 (__clang_major__ >= 7))))
3619 # define PERL_TSA__(x) __attribute__((x))
3620 # define PERL_TSA_ACTIVE
3622 # define PERL_TSA__(x) /* No TSA, make TSA attributes no-ops. */
3623 # undef PERL_TSA_ACTIVE
3626 /* PERL_TSA_CAPABILITY() is used to annotate typedefs.
3627 * typedef old_type PERL_TSA_CAPABILITY("mutex") new_type;
3629 #define PERL_TSA_CAPABILITY(x) \
3630 PERL_TSA__(capability(x))
3632 /* In the below examples the mutex must be lexically visible, usually
3633 * either as global variables, or as function arguments. */
3635 /* PERL_TSA_GUARDED_BY() is used to annotate global variables.
3637 * Foo foo PERL_TSA_GUARDED_BY(mutex);
3639 #define PERL_TSA_GUARDED_BY(x) \
3640 PERL_TSA__(guarded_by(x))
3642 /* PERL_TSA_PT_GUARDED_BY() is used to annotate global pointers.
3643 * The data _behind_ the pointer is guarded.
3645 * Foo* ptr PERL_TSA_PT_GUARDED_BY(mutex);
3647 #define PERL_TSA_PT_GUARDED_BY(x) \
3648 PERL_TSA__(pt_guarded_by(x))
3650 /* PERL_TSA_REQUIRES() is used to annotate functions.
3651 * The caller MUST hold the resource when calling the function.
3653 * void Foo() PERL_TSA_REQUIRES(mutex);
3655 #define PERL_TSA_REQUIRES(x) \
3656 PERL_TSA__(requires_capability(x))
3658 /* PERL_TSA_EXCLUDES() is used to annotate functions.
3659 * The caller MUST NOT hold resource when calling the function.
3661 * EXCLUDES should be used when the function first acquires
3662 * the resource and then releases it. Use to avoid deadlock.
3664 * void Foo() PERL_TSA_EXCLUDES(mutex);
3666 #define PERL_TSA_EXCLUDES(x) \
3667 PERL_TSA__(locks_excluded(x))
3669 /* PERL_TSA_ACQUIRE() is used to annotate functions.
3670 * The caller MUST NOT hold the resource when calling the function,
3671 * and the function will acquire the resource.
3673 * void Foo() PERL_TSA_ACQUIRE(mutex);
3675 #define PERL_TSA_ACQUIRE(x) \
3676 PERL_TSA__(acquire_capability(x))
3678 /* PERL_TSA_RELEASE() is used to annotate functions.
3679 * The caller MUST hold the resource when calling the function,
3680 * and the function will release the resource.
3682 * void Foo() PERL_TSA_RELEASE(mutex);
3684 #define PERL_TSA_RELEASE(x) \
3685 PERL_TSA__(release_capability(x))
3687 /* PERL_TSA_NO_TSA is used to annotate functions.
3688 * Used when being intentionally unsafe, or when the code is too
3689 * complicated for the analysis. Use sparingly.
3691 * void Foo() PERL_TSA_NO_TSA;
3693 #define PERL_TSA_NO_TSA \
3694 PERL_TSA__(no_thread_safety_analysis)
3696 /* There are more annotations/attributes available, see the clang
3697 * documentation for details. */
3699 #if defined(USE_ITHREADS)
3701 # include <win32thread.h>
3703 # include "os2thread.h"
3704 # elif defined(I_MACH_CTHREADS)
3705 # include <mach/cthreads.h>
3706 typedef cthread_t perl_os_thread;
3707 typedef mutex_t perl_mutex;
3708 typedef condition_t perl_cond;
3709 typedef void * perl_key;
3710 # elif defined(I_PTHREAD) /* Posix threads */
3711 # include <pthread.h>
3712 typedef pthread_t perl_os_thread;
3713 typedef pthread_mutex_t PERL_TSA_CAPABILITY("mutex") perl_mutex;
3714 typedef pthread_cond_t perl_cond;
3715 typedef pthread_key_t perl_key;
3718 /* Many readers; single writer */
3722 SSize_t readers_count;
3723 } perl_RnW1_mutex_t;
3726 #endif /* USE_ITHREADS */
3728 #ifdef PERL_TSA_ACTIVE
3729 /* Since most pthread mutex interfaces have not been annotated, we
3730 * need to have these wrappers. The NO_TSA annotation is quite ugly
3731 * but it cannot be avoided in plain C, unlike in C++, where one could
3732 * e.g. use ACQUIRE() with no arg on a mutex lock method.
3734 * The bodies of these wrappers are in util.c
3736 * TODO: however, some platforms are starting to get these clang
3737 * thread safety annotations for pthreads, for example FreeBSD.
3738 * Do we need a way to a bypass these wrappers? */
3739 EXTERN_C int perl_tsa_mutex_lock(perl_mutex* mutex)
3740 PERL_TSA_ACQUIRE(*mutex)
3742 EXTERN_C int perl_tsa_mutex_unlock(perl_mutex* mutex)
3743 PERL_TSA_RELEASE(*mutex)
3751 #define STATUS_UNIX PL_statusvalue
3753 # define STATUS_NATIVE PL_statusvalue_vms
3755 * vaxc$errno is only guaranteed to be valid if errno == EVMSERR, otherwise
3756 * its contents can not be trusted. Unfortunately, Perl seems to check
3757 * it on exit, so it when PL_statusvalue_vms is updated, vaxc$errno should
3760 # include <stsdef.h>
3762 /* Presume this because if VMS changes it, it will require a new
3763 * set of APIs for waiting on children for binary compatibility.
3765 # define child_offset_bits (8)
3766 # ifndef C_FAC_POSIX
3767 # define C_FAC_POSIX 0x35A000
3770 /* STATUS_EXIT - validates and returns a NATIVE exit status code for the
3771 * platform from the existing UNIX or Native status values.
3774 # define STATUS_EXIT \
3775 (((I32)PL_statusvalue_vms == -1 ? SS$_ABORT : PL_statusvalue_vms) | \
3776 (VMSISH_HUSHED ? STS$M_INHIB_MSG : 0))
3779 /* STATUS_NATIVE_CHILD_SET - Calculate UNIX status that matches the child
3780 * exit code and shifts the UNIX value over the correct number of bits to
3781 * be a child status. Usually the number of bits is 8, but that could be
3782 * platform dependent. The NATIVE status code is presumed to have either
3783 * from a child process.
3786 /* This is complicated. The child processes return a true native VMS
3787 status which must be saved. But there is an assumption in Perl that
3788 the UNIX child status has some relationship to errno values, so
3789 Perl tries to translate it to text in some of the tests.
3790 In order to get the string translation correct, for the error, errno
3791 must be EVMSERR, but that generates a different text message
3792 than what the test programs are expecting. So an errno value must
3793 be derived from the native status value when an error occurs.
3794 That will hide the true native status message. With this version of
3795 perl, the true native child status can always be retrieved so that
3796 is not a problem. But in this case, Pl_statusvalue and errno may
3797 have different values in them.
3800 # define STATUS_NATIVE_CHILD_SET(n) \
3802 I32 evalue = (I32)n; \
3803 if (evalue == EVMSERR) { \
3804 PL_statusvalue_vms = vaxc$errno; \
3805 PL_statusvalue = evalue; \
3807 PL_statusvalue_vms = evalue; \
3808 if (evalue == -1) { \
3809 PL_statusvalue = -1; \
3810 PL_statusvalue_vms = SS$_ABORT; /* Should not happen */ \
3812 PL_statusvalue = Perl_vms_status_to_unix(evalue, 1); \
3813 set_vaxc_errno(evalue); \
3814 if ((PL_statusvalue_vms & C_FAC_POSIX) == C_FAC_POSIX) \
3815 set_errno(EVMSERR); \
3816 else set_errno(Perl_vms_status_to_unix(evalue, 0)); \
3817 PL_statusvalue = PL_statusvalue << child_offset_bits; \
3821 # ifdef VMSISH_STATUS
3822 # define STATUS_CURRENT (VMSISH_STATUS ? STATUS_NATIVE : STATUS_UNIX)
3824 # define STATUS_CURRENT STATUS_UNIX
3827 /* STATUS_UNIX_SET - takes a UNIX/POSIX errno value and attempts to update
3828 * the NATIVE status to an equivalent value. Can not be used to translate
3829 * exit code values as exit code values are not guaranteed to have any
3830 * relationship at all to errno values.
3831 * This is used when Perl is forcing errno to have a specific value.
3833 # define STATUS_UNIX_SET(n) \
3835 I32 evalue = (I32)n; \
3836 PL_statusvalue = evalue; \
3837 if (PL_statusvalue != -1) { \
3838 if (PL_statusvalue != EVMSERR) { \
3839 PL_statusvalue &= 0xFFFF; \
3840 if (MY_POSIX_EXIT) \
3841 PL_statusvalue_vms=PL_statusvalue ? SS$_ABORT : SS$_NORMAL;\
3842 else PL_statusvalue_vms = Perl_unix_status_to_vms(evalue); \
3845 PL_statusvalue_vms = vaxc$errno; \
3848 else PL_statusvalue_vms = SS$_ABORT; \
3849 set_vaxc_errno(PL_statusvalue_vms); \
3852 /* STATUS_UNIX_EXIT_SET - Takes a UNIX/POSIX exit code and sets
3853 * the NATIVE error status based on it.
3855 * When in the default mode to comply with the Perl VMS documentation,
3856 * 0 is a success and any other code sets the NATIVE status to a failure
3857 * code of SS$_ABORT.
3859 * In the new POSIX EXIT mode, native status will be set so that the
3860 * actual exit code will can be retrieved by the calling program or
3863 * If the exit code is not clearly a UNIX parent or child exit status,
3864 * it will be passed through as a VMS status.
3867 # define STATUS_UNIX_EXIT_SET(n) \
3869 I32 evalue = (I32)n; \
3870 PL_statusvalue = evalue; \
3871 if (MY_POSIX_EXIT) { \
3872 if (evalue <= 0xFF00) { \
3873 if (evalue > 0xFF) \
3874 evalue = ((U8) (evalue >> child_offset_bits)); \
3875 PL_statusvalue_vms = \
3876 (C_FAC_POSIX | (evalue << 3 ) | \
3877 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1)); \
3878 } else /* forgive them Perl, for they have sinned */ \
3879 PL_statusvalue_vms = evalue; \
3882 PL_statusvalue_vms = SS$_NORMAL; \
3883 else if (evalue <= 0xFF00) \
3884 PL_statusvalue_vms = SS$_ABORT; \
3885 else { /* forgive them Perl, for they have sinned */ \
3886 if (evalue != EVMSERR) PL_statusvalue_vms = evalue; \
3887 else PL_statusvalue_vms = vaxc$errno; \
3888 /* And obviously used a VMS status value instead of UNIX */ \
3889 PL_statusvalue = EVMSERR; \
3891 set_vaxc_errno(PL_statusvalue_vms); \
3896 /* STATUS_EXIT_SET - Takes a NATIVE/UNIX/POSIX exit code
3897 * and sets the NATIVE error status based on it. This special case
3898 * is needed to maintain compatibility with past VMS behavior.
3900 * In the default mode on VMS, this number is passed through as
3901 * both the NATIVE and UNIX status. Which makes it different
3902 * that the STATUS_UNIX_EXIT_SET.
3904 * In the new POSIX EXIT mode, native status will be set so that the
3905 * actual exit code will can be retrieved by the calling program or
3908 * A POSIX exit code is from 0 to 255. If the exit code is higher
3909 * than this, it needs to be assumed that it is a VMS exit code and
3913 # define STATUS_EXIT_SET(n) \
3915 I32 evalue = (I32)n; \
3916 PL_statusvalue = evalue; \
3917 if (MY_POSIX_EXIT) \
3918 if (evalue > 255) PL_statusvalue_vms = evalue; else { \
3919 PL_statusvalue_vms = \
3920 (C_FAC_POSIX | (evalue << 3 ) | \
3921 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1));} \
3923 PL_statusvalue_vms = evalue ? evalue : SS$_NORMAL; \
3924 set_vaxc_errno(PL_statusvalue_vms); \
3928 /* This macro forces a success status */
3929 # define STATUS_ALL_SUCCESS \
3930 (PL_statusvalue = 0, PL_statusvalue_vms = SS$_NORMAL)
3932 /* This macro forces a failure status */
3933 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, \
3934 vaxc$errno = PL_statusvalue_vms = MY_POSIX_EXIT ? \
3935 (C_FAC_POSIX | (1 << 3) | STS$K_ERROR | STS$M_INHIB_MSG) : SS$_ABORT)
3937 #elif defined(__amigaos4__)
3938 /* A somewhat experimental attempt to simulate posix return code values */
3939 # define STATUS_NATIVE PL_statusvalue_posix
3940 # define STATUS_NATIVE_CHILD_SET(n) \
3942 PL_statusvalue_posix = (n); \
3943 if (PL_statusvalue_posix < 0) { \
3944 PL_statusvalue = -1; \
3947 PL_statusvalue = n << 8; \
3950 # define STATUS_UNIX_SET(n) \
3952 PL_statusvalue = (n); \
3953 if (PL_statusvalue != -1) \
3954 PL_statusvalue &= 0xFFFF; \
3956 # define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
3957 # define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
3958 # define STATUS_CURRENT STATUS_UNIX
3959 # define STATUS_EXIT STATUS_UNIX
3960 # define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3961 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
3964 # define STATUS_NATIVE PL_statusvalue_posix
3965 # if defined(WCOREDUMP)
3966 # define STATUS_NATIVE_CHILD_SET(n) \
3968 PL_statusvalue_posix = (n); \
3969 if (PL_statusvalue_posix == -1) \
3970 PL_statusvalue = -1; \
3973 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3974 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0) | \
3975 (WIFSIGNALED(PL_statusvalue_posix) && WCOREDUMP(PL_statusvalue_posix) ? 0x80 : 0); \
3978 # elif defined(WIFEXITED)
3979 # define STATUS_NATIVE_CHILD_SET(n) \
3981 PL_statusvalue_posix = (n); \
3982 if (PL_statusvalue_posix == -1) \
3983 PL_statusvalue = -1; \
3986 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3987 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0); \
3991 # define STATUS_NATIVE_CHILD_SET(n) \
3993 PL_statusvalue_posix = (n); \
3994 if (PL_statusvalue_posix == -1) \
3995 PL_statusvalue = -1; \
3998 PL_statusvalue_posix & 0xFFFF; \
4002 # define STATUS_UNIX_SET(n) \
4004 PL_statusvalue = (n); \
4005 if (PL_statusvalue != -1) \
4006 PL_statusvalue &= 0xFFFF; \
4008 # define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
4009 # define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
4010 # define STATUS_CURRENT STATUS_UNIX
4011 # define STATUS_EXIT STATUS_UNIX
4012 # define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
4013 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
4016 /* flags in PL_exit_flags for nature of exit() */
4017 #define PERL_EXIT_EXPECTED 0x01
4018 #define PERL_EXIT_DESTRUCT_END 0x02 /* Run END in perl_destruct */
4019 #define PERL_EXIT_WARN 0x04 /* Warn if Perl_my_exit() or Perl_my_failure_exit() called */
4020 #define PERL_EXIT_ABORT 0x08 /* Call abort() if Perl_my_exit() or Perl_my_failure_exit() called */
4023 /* format to use for version numbers in file/directory names */
4024 /* XXX move to Configure? */
4025 /* This was only ever used for the current version, and that can be done at
4026 compile time, as PERL_FS_VERSION, so should we just delete it? */
4027 # ifndef PERL_FS_VER_FMT
4028 # define PERL_FS_VER_FMT "%d.%d.%d"
4032 #ifndef PERL_FS_VERSION
4033 # define PERL_FS_VERSION PERL_VERSION_STRING
4038 =for apidoc_section $io
4039 =for apidoc Amn|void|PERL_FLUSHALL_FOR_CHILD
4041 This defines a way to flush all output buffers. This may be a
4042 performance issue, so we allow people to disable it. Also, if
4043 we are using stdio, there are broken implementations of fflush(NULL)
4044 out there, Solaris being the most prominent.
4049 #ifndef PERL_FLUSHALL_FOR_CHILD
4050 # if defined(USE_PERLIO) || defined(FFLUSH_NULL)
4051 # define PERL_FLUSHALL_FOR_CHILD PerlIO_flush((PerlIO*)NULL)
4052 # elif defined(FFLUSH_ALL)
4053 # define PERL_FLUSHALL_FOR_CHILD my_fflush_all()
4055 # define PERL_FLUSHALL_FOR_CHILD NOOP
4059 #ifndef PERL_WAIT_FOR_CHILDREN
4060 # define PERL_WAIT_FOR_CHILDREN NOOP
4063 /* the traditional thread-unsafe notion of "current interpreter". */
4064 #ifndef PERL_SET_INTERP
4065 # define PERL_SET_INTERP(i) \
4066 STMT_START { PL_curinterp = (PerlInterpreter*)(i); \
4067 PERL_SET_NON_tTHX_CONTEXT(i); \
4071 #ifndef PERL_GET_INTERP
4072 # define PERL_GET_INTERP (PL_curinterp)
4075 #if defined(MULTIPLICITY) && !defined(PERL_GET_THX)
4076 # define PERL_GET_THX ((PerlInterpreter *)PERL_GET_CONTEXT)
4077 # define PERL_SET_THX(t) PERL_SET_CONTEXT(t)
4081 This replaces the previous %_ "hack" by the "%p" hacks.
4082 All that is required is that the perl source does not
4083 use "%-p" or "%-<number>p" or "%<number>p" formats.
4084 These formats will still work in perl code.
4085 See comments in sv.c for further details.
4087 Robin Barker 2005-07-14
4089 No longer use %1p for VDf = %vd. RMB 2007-10-19
4093 # define SVf_(n) "-" STRINGIFY(n) "p"
4101 # define SVf32 SVf_(32)
4105 # define SVf256 SVf_(256)
4108 #define SVfARG(p) ((void*)(p))
4110 /* Render an SV as a quoted and escaped string suitable for an error message.
4111 * Only shows the first PERL_QUOTEDPREFIX_LEN characters, and adds ellipses if the
4112 * string is too long.
4114 #ifndef PERL_QUOTEDPREFIX_LEN
4115 # define PERL_QUOTEDPREFIX_LEN 256
4117 #ifndef SVf_QUOTEDPREFIX
4118 # define SVf_QUOTEDPREFIX "5p"
4121 /* like %s but runs through the quoted prefix logic */
4122 #ifndef PVf_QUOTEDPREFIX
4123 # define PVf_QUOTEDPREFIX "1p"
4130 #ifndef HEKf_QUOTEDPREFIX
4131 # define HEKf_QUOTEDPREFIX "7p"
4134 /* Not ideal, but we cannot easily include a number in an already-numeric
4135 * format sequence. */
4137 # define HEKf256 "3p"
4140 #ifndef HEKf256_QUOTEDPREFIX
4141 # define HEKf256_QUOTEDPREFIX "8p"
4144 #define HEKfARG(p) ((void*)(p))
4146 /* Documented in perlguts
4148 * %4p and %9p are custom formats for handling UTF8 parameters.
4149 * They only occur when prefixed by specific other formats.
4152 # define UTF8f "d%" UVuf "%4p"
4154 #ifndef UTF8f_QUOTEDPREFIX
4155 # define UTF8f_QUOTEDPREFIX "d%" UVuf "%9p"
4157 #define UTF8fARG(u,l,p) (int)cBOOL(u), (UV)(l), (void*)(p)
4160 #define PNfARG(pn) (int)1, (UV)PadnameLEN(pn), (void *)PadnamePV(pn)
4162 #define HvNAMEf "6p"
4163 #define HvNAMEf_QUOTEDPREFIX "10p"
4165 #define HvNAMEfARG(hv) ((void*)(hv))
4168 /* not used; but needed for backward compatibility with XS code? - RMB
4169 =for apidoc_section $io_formats
4170 =for apidoc AmnD|const char *|UVf
4172 Obsolete form of C<UVuf>, which you should convert to instead use
4181 #if !defined(DEBUGGING) && !defined(NDEBUG)
4186 /* For functions that are marked as __attribute__noreturn__, it's not
4187 appropriate to call return. In either case, include the lint directive.
4189 #ifdef HASATTRIBUTE_NORETURN
4190 # define NORETURN_FUNCTION_END NOT_REACHED;
4192 # define NORETURN_FUNCTION_END NOT_REACHED; return 0
4195 #ifdef HAS_BUILTIN_EXPECT
4196 # define EXPECT(expr,val) __builtin_expect(expr,val)
4198 # define EXPECT(expr,val) (expr)
4202 =for apidoc_section $directives
4204 =for apidoc Am||LIKELY|bool expr
4206 Returns the input unchanged, but at the same time it gives a branch prediction
4207 hint to the compiler that this condition is likely to be true.
4209 =for apidoc Am||UNLIKELY|bool expr
4211 Returns the input unchanged, but at the same time it gives a branch prediction
4212 hint to the compiler that this condition is likely to be false.
4216 #define LIKELY(cond) EXPECT(cBOOL(cond),TRUE)
4217 #define UNLIKELY(cond) EXPECT(cBOOL(cond),FALSE)
4219 #ifdef HAS_BUILTIN_CHOOSE_EXPR
4223 /* STATIC_ASSERT_DECL/STATIC_ASSERT_STMT are like assert(), but for compile
4224 time invariants. That is, their argument must be a constant expression that
4225 can be verified by the compiler. This expression can contain anything that's
4226 known to the compiler, e.g. #define constants, enums, or sizeof (...). If
4227 the expression evaluates to 0, compilation fails.
4228 Because they generate no runtime code (i.e. their use is "free"), they're
4229 always active, even under non-DEBUGGING builds.
4230 STATIC_ASSERT_DECL expands to a declaration and is suitable for use at
4231 file scope (outside of any function).
4232 STATIC_ASSERT_STMT expands to a statement and is suitable for use inside a
4235 #if (! defined(__IBMC__) || __IBMC__ >= 1210) \
4236 && (( defined(static_assert) && ( defined(_ISOC11_SOURCE) \
4237 || (__STDC_VERSION__ - 0) >= 201101L)) \
4238 || (defined(__cplusplus) && __cplusplus >= 201103L))
4239 /* XXX static_assert is a macro defined in <assert.h> in C11 or a compiler
4240 builtin in C++11. But IBM XL C V11 does not support _Static_assert, no
4241 matter what <assert.h> says.
4243 # define STATIC_ASSERT_DECL(COND) static_assert(COND, #COND)
4245 /* We use a bit-field instead of an array because gcc accepts
4246 'typedef char x[n]' where n is not a compile-time constant.
4247 We want to enforce constantness.
4249 # define STATIC_ASSERT_2(COND, SUFFIX) \
4251 unsigned int _static_assertion_failed_##SUFFIX : (COND) ? 1 : -1; \
4252 } _static_assertion_failed_##SUFFIX PERL_UNUSED_DECL
4253 # define STATIC_ASSERT_1(COND, SUFFIX) STATIC_ASSERT_2(COND, SUFFIX)
4254 # define STATIC_ASSERT_DECL(COND) STATIC_ASSERT_1(COND, __LINE__)
4256 /* We need this wrapper even in C11 because 'case X: static_assert(...);' is an
4257 error (static_assert is a declaration, and only statements can have labels).
4259 #define STATIC_ASSERT_STMT(COND) STMT_START { STATIC_ASSERT_DECL(COND); } STMT_END
4261 #ifndef __has_builtin
4262 # define __has_builtin(x) 0 /* not a clang style compiler */
4266 =for apidoc Am||ASSUME|bool expr
4267 C<ASSUME> is like C<assert()>, but it has a benefit in a release build. It is a
4268 hint to a compiler about a statement of fact in a function call free
4269 expression, which allows the compiler to generate better machine code. In a
4270 debug build, C<ASSUME(x)> is a synonym for C<assert(x)>. C<ASSUME(0)> means the
4271 control path is unreachable. In a for loop, C<ASSUME> can be used to hint that
4272 a loop will run at least X times. C<ASSUME> is based off MSVC's C<__assume>
4273 intrinsic function, see its documents for more details.
4278 #if __has_builtin(__builtin_unreachable)
4279 # define HAS_BUILTIN_UNREACHABLE
4280 #elif PERL_GCC_VERSION_GE(4,5,0)
4281 # define HAS_BUILTIN_UNREACHABLE
4285 # define ASSUME(x) assert(x)
4286 #elif __has_builtin(__builtin_assume)
4287 # if defined(__clang__) || defined(__clang)
4288 # define ASSUME(x) CLANG_DIAG_IGNORE(-Wassume) \
4289 __builtin_assume (x) \
4292 # define ASSUME(x) __builtin_assume(x)
4294 #elif defined(_MSC_VER)
4295 # define ASSUME(x) __assume(x)
4296 #elif defined(__ARMCC_VERSION) /* untested */
4297 # define ASSUME(x) __promise(x)
4298 #elif defined(HAS_BUILTIN_UNREACHABLE)
4299 /* Compilers can take the hint from something being unreachable */
4300 # define ASSUME(x) ((x) ? (void) 0 : __builtin_unreachable())
4302 /* Not DEBUGGING, so assert() is a no-op, but a random compiler might
4303 * define assert() to its own special optimization token so pass it through
4304 * to C lib as a last resort */
4305 # define ASSUME(x) assert(x)
4308 #ifdef HAS_BUILTIN_UNREACHABLE
4309 # define NOT_REACHED \
4311 ASSUME(!"UNREACHABLE"); __builtin_unreachable(); \
4313 # undef HAS_BUILTIN_UNREACHABLE /* Don't leak out this internal symbol */
4314 #elif ! defined(__GNUC__) && (defined(__sun) || defined(__hpux))
4315 /* These just complain that NOT_REACHED isn't reached */
4316 # define NOT_REACHED
4318 # define NOT_REACHED ASSUME(!"UNREACHABLE")
4321 /* Some unistd.h's give a prototype for pause() even though
4322 HAS_PAUSE ends up undefined. This causes the #define
4323 below to be rejected by the compiler. Sigh.
4328 #define Pause() sleep((32767<<16)+32767)
4332 # ifdef IOCPARM_MASK
4333 /* on BSDish systems we're safe */
4334 # define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
4335 # elif defined(_IOC_SIZE) && defined(__GLIBC__)
4336 /* on Linux systems we're safe; except when we're not [perl #38223] */
4337 # define IOCPARM_LEN(x) (_IOC_SIZE(x) < 256 ? 256 : _IOC_SIZE(x))
4339 /* otherwise guess at what's safe */
4340 # define IOCPARM_LEN(x) 256
4344 #if defined(__CYGWIN__)
4346 * This symbol, if defined, indicates that the program should
4347 * use the routine my_binmode(FILE *fp, char iotype, int mode) to insure
4348 * that a file is in "binary" mode -- that is, that no translation
4349 * of bytes occurs on read or write operations.
4351 # define USEMYBINMODE /**/
4352 # include <io.h> /* for setmode() prototype */
4353 # define my_binmode(fp, iotype, mode) \
4354 cBOOL(PerlLIO_setmode(fileno(fp), mode) != -1)
4358 void init_os_extras(void);
4361 #ifdef UNION_ANY_DEFINITION
4362 UNION_ANY_DEFINITION;
4383 void (*any_dptr) (void*);
4384 void (*any_dxptr) (pTHX_ void*);
4388 typedef I32 (*filter_t) (pTHX_ int, SV *, int);
4390 #define FILTER_READ(idx, sv, len) filter_read(idx, sv, len)
4391 #define FILTER_DATA(idx) \
4392 (PL_parser ? AvARRAY(PL_parser->rsfp_filters)[idx] : NULL)
4393 #define FILTER_ISREADER(idx) \
4394 (PL_parser && PL_parser->rsfp_filters \
4395 && idx >= AvFILLp(PL_parser->rsfp_filters))
4396 #define PERL_FILTER_EXISTS(i) \
4397 (PL_parser && PL_parser->rsfp_filters \
4398 && (Size_t) (i) < av_count(PL_parser->rsfp_filters))
4400 #if defined(_AIX) && !defined(_AIX43)
4401 #if defined(USE_REENTRANT) || defined(_REENTRANT) || defined(_THREAD_SAFE)
4402 /* We cannot include <crypt.h> to get the struct crypt_data
4403 * because of setkey prototype problems when threading */
4404 typedef struct crypt_data { /* straight from /usr/include/crypt.h */
4405 /* From OSF, Not needed in AIX
4413 #endif /* threading */
4416 #ifndef PERL_CALLCONV
4418 # define PERL_CALLCONV EXTERN_C
4420 # define PERL_CALLCONV
4423 #ifndef PERL_CALLCONV_NO_RET
4424 # define PERL_CALLCONV_NO_RET PERL_CALLCONV
4427 /* PERL_STATIC_NO_RET is supposed to be equivalent to STATIC on builds that
4428 dont have a noreturn as a declaration specifier
4430 #ifndef PERL_STATIC_NO_RET
4431 # define PERL_STATIC_NO_RET STATIC
4434 /* PERL_STATIC_INLINE_NO_RET is supposed to be equivalent to PERL_STATIC_INLINE
4435 * on builds that dont have a noreturn as a declaration specifier
4437 #ifndef PERL_STATIC_INLINE_NO_RET
4438 # define PERL_STATIC_INLINE_NO_RET PERL_STATIC_INLINE
4441 #ifndef PERL_STATIC_FORCE_INLINE
4442 # define PERL_STATIC_FORCE_INLINE PERL_STATIC_INLINE
4445 #ifndef PERL_STATIC_FORCE_INLINE_NO_RET
4446 # define PERL_STATIC_FORCE_INLINE_NO_RET PERL_STATIC_INLINE
4450 # include "iperlsys.h"
4453 #ifdef __LIBCATAMOUNT__
4454 #undef HAS_PASSWD /* unixish.h but not unixish enough. */
4456 #define FAKE_BIT_BUCKET
4459 /* [perl #22371] Algorithmic Complexity Attack on Perl 5.6.1, 5.8.0.
4460 * Note that the USE_HASH_SEED and similar defines are *NOT* defined by
4461 * Configure, despite their names being similar to other defines like
4462 * USE_ITHREADS. Configure in fact knows nothing about the randomised
4463 * hashes. Therefore to enable/disable the hash randomisation defines
4464 * use the Configure -Accflags=... instead. */
4465 #if !defined(NO_HASH_SEED) && !defined(USE_HASH_SEED)
4466 # define USE_HASH_SEED
4472 /* macros to define bit-fields in structs. */
4473 #ifndef PERL_BITFIELD8
4474 # ifdef HAS_NON_INT_BITFIELDS
4475 # define PERL_BITFIELD8 U8
4477 # define PERL_BITFIELD8 unsigned
4480 #ifndef PERL_BITFIELD16
4481 # ifdef HAS_NON_INT_BITFIELDS
4482 # define PERL_BITFIELD16 U16
4484 # define PERL_BITFIELD16 unsigned
4487 #ifndef PERL_BITFIELD32
4488 # ifdef HAS_NON_INT_BITFIELDS
4489 # define PERL_BITFIELD32 U32
4491 # define PERL_BITFIELD32 unsigned
4502 #include "opnames.h"
4509 #include "warnings.h"
4512 /* these would be in doio.h if there was such a file */
4513 #define my_stat() my_stat_flags(SV_GMAGIC)
4514 #define my_lstat() my_lstat_flags(SV_GMAGIC)
4516 /* defined in sv.c, but also used in [ach]v.c */
4519 #undef _XPVCV_COMMON
4523 typedef struct magic_state MGS; /* struct magic_state defined in mg.c */
4525 #if defined(PERL_IN_REGEX_ENGINE) || defined(PERL_EXT_RE_BUILD)
4527 /* These have to be predeclared, as they are used in proto.h which is #included
4528 * before their definitions in regcomp.h. */
4531 typedef struct regnode_charclass regnode_charclass;
4533 /* A hopefully less confusing name. The sub-classes are all Posix classes only
4534 * used under /l matching */
4535 typedef struct regnode_charclass_posixl regnode_charclass_class;
4536 typedef struct regnode_charclass_posixl regnode_charclass_posixl;
4538 typedef struct regnode_ssc regnode_ssc;
4539 typedef struct RExC_state_t RExC_state_t;
4540 struct _reg_trie_data;
4541 typedef struct scan_data_t scan_data_t;
4545 struct ptr_tbl_ent {
4546 struct ptr_tbl_ent* next;
4552 struct ptr_tbl_ent** tbl_ary;
4555 struct ptr_tbl_arena *tbl_arena;
4556 struct ptr_tbl_ent *tbl_arena_next;
4557 struct ptr_tbl_ent *tbl_arena_end;
4560 #if defined(htonl) && !defined(HAS_HTONL)
4563 #if defined(htons) && !defined(HAS_HTONS)
4566 #if defined(ntohl) && !defined(HAS_NTOHL)
4569 #if defined(ntohs) && !defined(HAS_NTOHS)
4577 # if (BYTEORDER & 0xffff) == 0x4321
4578 /* Big endian system, so ntohl, ntohs, htonl and htons do not need to
4579 re-order their values. However, to behave identically to the alternative
4580 implementations, they should truncate to the correct size. */
4581 # define ntohl(x) ((x)&0xFFFFFFFF)
4582 # define htonl(x) ntohl(x)
4583 # define ntohs(x) ((x)&0xFFFF)
4584 # define htons(x) ntohs(x)
4585 # elif BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
4587 /* Note that we can't straight out declare our own htonl and htons because
4588 the Win32 build process forcibly undefines HAS_HTONL etc for its miniperl,
4589 to avoid the overhead of initialising the socket subsystem, but the headers
4590 that *declare* the various functions are still seen. If we declare our own
4591 htonl etc they will clash with the declarations in the Win32 headers. */
4593 PERL_STATIC_INLINE U32
4594 my_swap32(const U32 x) {
4595 return ((x & 0xFF) << 24) | ((x >> 24) & 0xFF)
4596 | ((x & 0x0000FF00) << 8) | ((x & 0x00FF0000) >> 8);
4599 PERL_STATIC_INLINE U16
4600 my_swap16(const U16 x) {
4601 return ((x & 0xFF) << 8) | ((x >> 8) & 0xFF);
4604 # define htonl(x) my_swap32(x)
4605 # define ntohl(x) my_swap32(x)
4606 # define ntohs(x) my_swap16(x)
4607 # define htons(x) my_swap16(x)
4609 # error "Unsupported byteorder"
4610 /* The C pre-processor doesn't let us return the value of BYTEORDER as part of
4611 the error message. Please check the value of the macro BYTEORDER, as defined
4612 in config.h. The values of BYTEORDER we expect are
4614 big endian little endian
4615 32 bit 0x4321 0x1234
4616 64 bit 0x87654321 0x12345678
4618 If you have a system with a different byte order, please see
4619 pod/perlhack.pod for how to submit a patch to add supporting code.
4625 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
4628 #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
4629 /* Little endian system, so vtohl, vtohs, htovl and htovs do not need to
4630 re-order their values. However, to behave identically to the alternative
4631 implementations, they should truncate to the correct size. */
4632 # define vtohl(x) ((x)&0xFFFFFFFF)
4633 # define vtohs(x) ((x)&0xFFFF)
4634 # define htovl(x) vtohl(x)
4635 # define htovs(x) vtohs(x)
4636 #elif BYTEORDER == 0x4321 || BYTEORDER == 0x87654321
4637 # define vtohl(x) ((((x)&0xFF)<<24) \
4639 +(((x)&0x0000FF00)<<8) \
4640 +(((x)&0x00FF0000)>>8) )
4641 # define vtohs(x) ((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
4642 # define htovl(x) vtohl(x)
4643 # define htovs(x) vtohs(x)
4645 # error "Unsupported byteorder"
4646 /* If you have need for current perl on PDP-11 or similar, and can help test
4647 that blead keeps working on a mixed-endian system, then see
4648 pod/perlhack.pod for how to submit patches to things working again. */
4651 /* *MAX Plus 1. A floating point value.
4652 Hopefully expressed in a way that dodgy floating point can't mess up.
4653 >> 2 rather than 1, so that value is safely less than I32_MAX after 1
4655 May find that some broken compiler will want the value cast to I32.
4656 [after the shift, as signed >> may not be as secure as unsigned >>]
4658 #define I32_MAX_P1 (2.0 * (1 + (((U32)I32_MAX) >> 1)))
4659 #define U32_MAX_P1 (4.0 * (1 + ((U32_MAX) >> 2)))
4660 /* For compilers that can't correctly cast NVs over 0x7FFFFFFF (or
4661 0x7FFFFFFFFFFFFFFF) to an unsigned integer. In the future, sizeof(UV)
4662 may be greater than sizeof(IV), so don't assume that half max UV is max IV.
4664 #define U32_MAX_P1_HALF (2.0 * (1 + ((U32_MAX) >> 2)))
4666 #define UV_MAX_P1 (4.0 * (1 + ((UV_MAX) >> 2)))
4667 #define IV_MAX_P1 (2.0 * (1 + (((UV)IV_MAX) >> 1)))
4668 #define UV_MAX_P1_HALF (2.0 * (1 + ((UV_MAX) >> 2)))
4670 /* This may look like unnecessary jumping through hoops, but converting
4671 out of range floating point values to integers *is* undefined behaviour,
4672 and it is starting to bite.
4674 =for apidoc_section $casting
4675 =for apidoc Am|I32|I_32|NV what
4676 Cast an NV to I32 while avoiding undefined C behavior
4678 =for apidoc Am|U32|U_32|NV what
4679 Cast an NV to U32 while avoiding undefined C behavior
4681 =for apidoc Am|IV|I_V|NV what
4682 Cast an NV to IV while avoiding undefined C behavior
4684 =for apidoc Am|UV|U_V|NV what
4685 Cast an NV to UV while avoiding undefined C behavior
4690 #define I_32(what) (cast_i32((NV)(what)))
4691 #define U_32(what) (cast_ulong((NV)(what)))
4692 #define I_V(what) (cast_iv((NV)(what)))
4693 #define U_V(what) (cast_uv((NV)(what)))
4695 #define I_32(n) ((n) < I32_MAX_P1 ? ((n) < I32_MIN ? I32_MIN : (I32) (n)) \
4696 : ((n) < U32_MAX_P1 ? (I32)(U32) (n) \
4697 : ((n) > 0 ? (I32) U32_MAX : 0 /* NaN */)))
4698 #define U_32(n) ((n) < 0.0 ? ((n) < I32_MIN ? (UV) I32_MIN : (U32)(I32) (n)) \
4699 : ((n) < U32_MAX_P1 ? (U32) (n) \
4700 : ((n) > 0 ? U32_MAX : 0 /* NaN */)))
4701 #define I_V(n) (LIKELY((n) < IV_MAX_P1) ? (UNLIKELY((n) < IV_MIN) ? IV_MIN : (IV) (n)) \
4702 : (LIKELY((n) < UV_MAX_P1) ? (IV)(UV) (n) \
4703 : ((n) > 0 ? (IV)UV_MAX : 0 /* NaN */)))
4704 #define U_V(n) ((n) < 0.0 ? (UNLIKELY((n) < IV_MIN) ? (UV) IV_MIN : (UV)(IV) (n)) \
4705 : (LIKELY((n) < UV_MAX_P1) ? (UV) (n) \
4706 : ((n) > 0 ? UV_MAX : 0 /* NaN */)))
4709 #define U_S(what) ((U16)U_32(what))
4710 #define U_I(what) ((unsigned int)U_32(what))
4711 #define U_L(what) U_32(what)
4714 =for apidoc_section $integer
4715 =for apidoc Amn|IV|IV_MAX
4716 The largest signed integer that fits in an IV on this platform.
4718 =for apidoc Amn|IV|IV_MIN
4719 The negative signed integer furthest away from 0 that fits in an IV on this
4722 =for apidoc Amn|UV|UV_MAX
4723 The largest unsigned integer that fits in a UV on this platform.
4725 =for apidoc Amn|UV|UV_MIN
4726 The smallest unsigned integer that fits in a UV on this platform. It should
4733 # ifndef Perl_signbit
4734 # define Perl_signbit signbit
4738 /* These do not care about the fractional part, only about the range. */
4739 #define NV_WITHIN_IV(nv) (I_V(nv) >= IV_MIN && I_V(nv) <= IV_MAX)
4740 #define NV_WITHIN_UV(nv) ((nv)>=0.0 && U_V(nv) >= UV_MIN && U_V(nv) <= UV_MAX)
4742 /* Used with UV/IV arguments: */
4743 /* XXXX: need to speed it up */
4744 #define CLUMP_2UV(iv) ((iv) < 0 ? 0 : (UV)(iv))
4745 #define CLUMP_2IV(uv) ((uv) > (UV)IV_MAX ? IV_MAX : (IV)(uv))
4753 Uid_t getuid (void);
4754 Uid_t geteuid (void);
4755 Gid_t getgid (void);
4756 Gid_t getegid (void);
4760 #ifndef Perl_debug_log
4761 # define Perl_debug_log PerlIO_stderr()
4764 #ifndef Perl_error_log
4765 # define Perl_error_log (PL_stderrgv \
4766 && isGV(PL_stderrgv) \
4767 && GvIOp(PL_stderrgv) \
4768 && IoOFP(GvIOp(PL_stderrgv)) \
4769 ? IoOFP(GvIOp(PL_stderrgv)) \
4774 #define DEBUG_p_FLAG 0x00000001 /* 1 */
4775 #define DEBUG_s_FLAG 0x00000002 /* 2 */
4776 #define DEBUG_l_FLAG 0x00000004 /* 4 */
4777 #define DEBUG_t_FLAG 0x00000008 /* 8 */
4778 #define DEBUG_o_FLAG 0x00000010 /* 16 */
4779 #define DEBUG_c_FLAG 0x00000020 /* 32 */
4780 #define DEBUG_P_FLAG 0x00000040 /* 64 */
4781 #define DEBUG_m_FLAG 0x00000080 /* 128 */
4782 #define DEBUG_f_FLAG 0x00000100 /* 256 */
4783 #define DEBUG_r_FLAG 0x00000200 /* 512 */
4784 #define DEBUG_x_FLAG 0x00000400 /* 1024 */
4785 #define DEBUG_u_FLAG 0x00000800 /* 2048 */
4786 /* U is reserved for Unofficial, exploratory hacking */
4787 #define DEBUG_U_FLAG 0x00001000 /* 4096 */
4788 #define DEBUG_h_FLAG 0x00002000 /* 8192 */
4789 #define DEBUG_X_FLAG 0x00004000 /* 16384 */
4790 #define DEBUG_D_FLAG 0x00008000 /* 32768 */
4791 #define DEBUG_S_FLAG 0x00010000 /* 65536 */
4792 #define DEBUG_T_FLAG 0x00020000 /* 131072 */
4793 #define DEBUG_R_FLAG 0x00040000 /* 262144 */
4794 #define DEBUG_J_FLAG 0x00080000 /* 524288 */
4795 #define DEBUG_v_FLAG 0x00100000 /*1048576 */
4796 #define DEBUG_C_FLAG 0x00200000 /*2097152 */
4797 #define DEBUG_A_FLAG 0x00400000 /*4194304 */
4798 #define DEBUG_q_FLAG 0x00800000 /*8388608 */
4799 #define DEBUG_M_FLAG 0x01000000 /*16777216*/
4800 #define DEBUG_B_FLAG 0x02000000 /*33554432*/
4801 #define DEBUG_L_FLAG 0x04000000 /*67108864*/
4802 #define DEBUG_i_FLAG 0x08000000 /*134217728*/
4803 #define DEBUG_y_FLAG 0x10000000 /*268435456*/
4804 #define DEBUG_MASK 0x1FFFEFFF /* mask of all the standard flags */
4806 #define DEBUG_DB_RECURSE_FLAG 0x40000000
4807 #define DEBUG_TOP_FLAG 0x80000000 /* -D was given --> PL_debug |= FLAG */
4809 /* Both flags have to be set */
4810 # define DEBUG_BOTH_FLAGS_TEST_(flag1, flag2) \
4811 UNLIKELY((PL_debug & ((flag1)|(flag2))) \
4812 == ((flag1)|(flag2)))
4814 # define DEBUG_p_TEST_ UNLIKELY(PL_debug & DEBUG_p_FLAG)
4815 # define DEBUG_s_TEST_ UNLIKELY(PL_debug & DEBUG_s_FLAG)
4816 # define DEBUG_l_TEST_ UNLIKELY(PL_debug & DEBUG_l_FLAG)
4817 # define DEBUG_t_TEST_ UNLIKELY(PL_debug & DEBUG_t_FLAG)
4818 # define DEBUG_o_TEST_ UNLIKELY(PL_debug & DEBUG_o_FLAG)
4819 # define DEBUG_c_TEST_ UNLIKELY(PL_debug & DEBUG_c_FLAG)
4820 # define DEBUG_P_TEST_ UNLIKELY(PL_debug & DEBUG_P_FLAG)
4821 # define DEBUG_m_TEST_ UNLIKELY(PL_debug & DEBUG_m_FLAG)
4822 # define DEBUG_f_TEST_ UNLIKELY(PL_debug & DEBUG_f_FLAG)
4823 # define DEBUG_r_TEST_ UNLIKELY(PL_debug & DEBUG_r_FLAG)
4824 # define DEBUG_x_TEST_ UNLIKELY(PL_debug & DEBUG_x_FLAG)
4825 # define DEBUG_u_TEST_ UNLIKELY(PL_debug & DEBUG_u_FLAG)
4826 # define DEBUG_U_TEST_ UNLIKELY(PL_debug & DEBUG_U_FLAG)
4827 # define DEBUG_h_TEST_ UNLIKELY(PL_debug & DEBUG_h_FLAG)
4828 # define DEBUG_X_TEST_ UNLIKELY(PL_debug & DEBUG_X_FLAG)
4829 # define DEBUG_D_TEST_ UNLIKELY(PL_debug & DEBUG_D_FLAG)
4830 # define DEBUG_S_TEST_ UNLIKELY(PL_debug & DEBUG_S_FLAG)
4831 # define DEBUG_T_TEST_ UNLIKELY(PL_debug & DEBUG_T_FLAG)
4832 # define DEBUG_R_TEST_ UNLIKELY(PL_debug & DEBUG_R_FLAG)
4833 # define DEBUG_J_TEST_ UNLIKELY(PL_debug & DEBUG_J_FLAG)
4834 # define DEBUG_v_TEST_ UNLIKELY(PL_debug & DEBUG_v_FLAG)
4835 # define DEBUG_C_TEST_ UNLIKELY(PL_debug & DEBUG_C_FLAG)
4836 # define DEBUG_A_TEST_ UNLIKELY(PL_debug & DEBUG_A_FLAG)
4837 # define DEBUG_q_TEST_ UNLIKELY(PL_debug & DEBUG_q_FLAG)
4838 # define DEBUG_M_TEST_ UNLIKELY(PL_debug & DEBUG_M_FLAG)
4839 # define DEBUG_B_TEST_ UNLIKELY(PL_debug & DEBUG_B_FLAG)
4841 /* Locale initialization comes earlier than PL_debug gets set,
4842 * DEBUG_LOCALE_INITIALIZATION_, if defined, will be set early enough */
4843 # ifndef DEBUG_LOCALE_INITIALIZATION_
4844 # define DEBUG_LOCALE_INITIALIZATION_ 0
4846 # define DEBUG_L_TEST_ \
4847 ( UNLIKELY(DEBUG_LOCALE_INITIALIZATION_) \
4848 || UNLIKELY(PL_debug & DEBUG_L_FLAG))
4849 # define DEBUG_Lv_TEST_ \
4850 ( UNLIKELY(DEBUG_LOCALE_INITIALIZATION_) \
4851 || UNLIKELY(DEBUG_BOTH_FLAGS_TEST_(DEBUG_L_FLAG, DEBUG_v_FLAG)))
4852 # define DEBUG_i_TEST_ UNLIKELY(PL_debug & DEBUG_i_FLAG)
4853 # define DEBUG_y_TEST_ UNLIKELY(PL_debug & DEBUG_y_FLAG)
4854 # define DEBUG_Xv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_X_FLAG, DEBUG_v_FLAG)
4855 # define DEBUG_Uv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_U_FLAG, DEBUG_v_FLAG)
4856 # define DEBUG_Pv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_P_FLAG, DEBUG_v_FLAG)
4857 # define DEBUG_yv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_y_FLAG, DEBUG_v_FLAG)
4861 # define DEBUG_p_TEST DEBUG_p_TEST_
4862 # define DEBUG_s_TEST DEBUG_s_TEST_
4863 # define DEBUG_l_TEST DEBUG_l_TEST_
4864 # define DEBUG_t_TEST DEBUG_t_TEST_
4865 # define DEBUG_o_TEST DEBUG_o_TEST_
4866 # define DEBUG_c_TEST DEBUG_c_TEST_
4867 # define DEBUG_P_TEST DEBUG_P_TEST_
4868 # define DEBUG_m_TEST DEBUG_m_TEST_
4869 # define DEBUG_f_TEST DEBUG_f_TEST_
4870 # define DEBUG_r_TEST DEBUG_r_TEST_
4871 # define DEBUG_x_TEST DEBUG_x_TEST_
4872 # define DEBUG_u_TEST DEBUG_u_TEST_
4873 # define DEBUG_U_TEST DEBUG_U_TEST_
4874 # define DEBUG_h_TEST DEBUG_h_TEST_
4875 # define DEBUG_X_TEST DEBUG_X_TEST_
4876 # define DEBUG_D_TEST DEBUG_D_TEST_
4877 # define DEBUG_S_TEST DEBUG_S_TEST_
4878 # define DEBUG_T_TEST DEBUG_T_TEST_
4879 # define DEBUG_R_TEST DEBUG_R_TEST_
4880 # define DEBUG_J_TEST DEBUG_J_TEST_
4881 # define DEBUG_v_TEST DEBUG_v_TEST_
4882 # define DEBUG_C_TEST DEBUG_C_TEST_
4883 # define DEBUG_A_TEST DEBUG_A_TEST_
4884 # define DEBUG_q_TEST DEBUG_q_TEST_
4885 # define DEBUG_M_TEST DEBUG_M_TEST_
4886 # define DEBUG_B_TEST DEBUG_B_TEST_
4887 # define DEBUG_L_TEST DEBUG_L_TEST_
4888 # define DEBUG_i_TEST DEBUG_i_TEST_
4889 # define DEBUG_y_TEST DEBUG_y_TEST_
4890 # define DEBUG_Xv_TEST DEBUG_Xv_TEST_
4891 # define DEBUG_Uv_TEST DEBUG_Uv_TEST_
4892 # define DEBUG_Pv_TEST DEBUG_Pv_TEST_
4893 # define DEBUG_Lv_TEST DEBUG_Lv_TEST_
4894 # define DEBUG_yv_TEST DEBUG_yv_TEST_
4896 # define PERL_DEB(a) a
4897 # define PERL_DEB2(a,b) a
4898 # define PERL_DEBUG(a) if (PL_debug) a
4899 # define DEBUG_p(a) if (DEBUG_p_TEST) a
4900 # define DEBUG_s(a) if (DEBUG_s_TEST) a
4901 # define DEBUG_l(a) if (DEBUG_l_TEST) a
4902 # define DEBUG_t(a) if (DEBUG_t_TEST) a
4903 # define DEBUG_o(a) if (DEBUG_o_TEST) a
4904 # define DEBUG_c(a) if (DEBUG_c_TEST) a
4905 # define DEBUG_P(a) if (DEBUG_P_TEST) a
4907 /* Temporarily turn off memory debugging in case the a
4908 * does memory allocation, either directly or indirectly. */
4909 # define DEBUG_m(a) \
4911 if (PERL_GET_INTERP) { \
4913 if (DEBUG_m_TEST) { \
4914 PL_debug &= ~DEBUG_m_FLAG; \
4916 PL_debug |= DEBUG_m_FLAG; \
4921 /* These allow you to customize your debugging output for specialized,
4922 * generally temporary ad-hoc purposes. For example, if you need 'errno'
4923 * preserved, you can add definitions to these macros (either in this file for
4924 * the whole program, or before the #include "perl.h" in a particular .c file
4925 * you're trying to debug) and recompile:
4927 * #define DEBUG_PRE_STMTS dSAVE_ERRNO;
4928 * #define DEBUG_POST_STMTS RESTORE_ERRNO;
4930 * Other potential things include displaying timestamps, location information,
4931 * which thread, etc. Here's an example with both errno and location info:
4933 * #define DEBUG_PRE_STMTS dSAVE_ERRNO; \
4934 * PerlIO_printf(Perl_debug_log, "%s:%d: ", __FILE__, __LINE__);
4935 * #define DEBUG_POST RESTORE_ERRNO;
4937 * All DEBUG statements in the compiled scope will have these extra statements
4938 * compiled in; they will be executed only for the DEBUG statements whose flags
4941 #ifndef DEBUG_PRE_STMTS
4942 # define DEBUG_PRE_STMTS
4944 #ifndef DEBUG_POST_STMTS
4945 # define DEBUG_POST_STMTS
4948 # define DEBUG__(t, a) \
4951 DEBUG_PRE_STMTS a; DEBUG_POST_STMTS \
4955 # define DEBUG_f(a) DEBUG__(DEBUG_f_TEST, a)
4957 /* For re_comp.c, re_exec.c, assume -Dr has been specified */
4958 # ifdef PERL_EXT_RE_BUILD
4959 # define DEBUG_r(a) STMT_START { \
4960 DEBUG_PRE_STMTS a; DEBUG_POST_STMTS \
4963 # define DEBUG_r(a) DEBUG__(DEBUG_r_TEST, a)
4964 # endif /* PERL_EXT_RE_BUILD */
4966 # define DEBUG_x(a) DEBUG__(DEBUG_x_TEST, a)
4967 # define DEBUG_u(a) DEBUG__(DEBUG_u_TEST, a)
4968 # define DEBUG_U(a) DEBUG__(DEBUG_U_TEST, a)
4969 # define DEBUG_X(a) DEBUG__(DEBUG_X_TEST, a)
4970 # define DEBUG_D(a) DEBUG__(DEBUG_D_TEST, a)
4971 # define DEBUG_Xv(a) DEBUG__(DEBUG_Xv_TEST, a)
4972 # define DEBUG_Uv(a) DEBUG__(DEBUG_Uv_TEST, a)
4973 # define DEBUG_Pv(a) DEBUG__(DEBUG_Pv_TEST, a)
4974 # define DEBUG_Lv(a) DEBUG__(DEBUG_Lv_TEST, a)
4975 # define DEBUG_yv(a) DEBUG__(DEBUG_yv_TEST, a)
4977 # define DEBUG_S(a) DEBUG__(DEBUG_S_TEST, a)
4978 # define DEBUG_T(a) DEBUG__(DEBUG_T_TEST, a)
4979 # define DEBUG_R(a) DEBUG__(DEBUG_R_TEST, a)
4980 # define DEBUG_v(a) DEBUG__(DEBUG_v_TEST, a)
4981 # define DEBUG_C(a) DEBUG__(DEBUG_C_TEST, a)
4982 # define DEBUG_A(a) DEBUG__(DEBUG_A_TEST, a)
4983 # define DEBUG_q(a) DEBUG__(DEBUG_q_TEST, a)
4984 # define DEBUG_M(a) DEBUG__(DEBUG_M_TEST, a)
4985 # define DEBUG_B(a) DEBUG__(DEBUG_B_TEST, a)
4986 # define DEBUG_L(a) DEBUG__(DEBUG_L_TEST, a)
4987 # define DEBUG_i(a) DEBUG__(DEBUG_i_TEST, a)
4988 # define DEBUG_y(a) DEBUG__(DEBUG_y_TEST, a)
4990 #else /* ! DEBUGGING below */
4992 # define DEBUG_p_TEST (0)
4993 # define DEBUG_s_TEST (0)
4994 # define DEBUG_l_TEST (0)
4995 # define DEBUG_t_TEST (0)
4996 # define DEBUG_o_TEST (0)
4997 # define DEBUG_c_TEST (0)
4998 # define DEBUG_P_TEST (0)
4999 # define DEBUG_m_TEST (0)
5000 # define DEBUG_f_TEST (0)
5001 # define DEBUG_r_TEST (0)
5002 # define DEBUG_x_TEST (0)
5003 # define DEBUG_u_TEST (0)
5004 # define DEBUG_U_TEST (0)
5005 # define DEBUG_h_TEST (0)
5006 # define DEBUG_X_TEST (0)
5007 # define DEBUG_D_TEST (0)
5008 # define DEBUG_S_TEST (0)
5009 # define DEBUG_T_TEST (0)
5010 # define DEBUG_R_TEST (0)
5011 # define DEBUG_J_TEST (0)
5012 # define DEBUG_v_TEST (0)
5013 # define DEBUG_C_TEST (0)
5014 # define DEBUG_A_TEST (0)
5015 # define DEBUG_q_TEST (0)
5016 # define DEBUG_M_TEST (0)
5017 # define DEBUG_B_TEST (0)
5018 # define DEBUG_L_TEST (0)
5019 # define DEBUG_i_TEST (0)
5020 # define DEBUG_y_TEST (0)
5021 # define DEBUG_Xv_TEST (0)
5022 # define DEBUG_Uv_TEST (0)
5023 # define DEBUG_Pv_TEST (0)
5024 # define DEBUG_Lv_TEST (0)
5025 # define DEBUG_yv_TEST (0)
5027 # define PERL_DEB(a)
5028 # define PERL_DEB2(a,b) b
5029 # define PERL_DEBUG(a)
5057 # define DEBUG_Xv(a)
5058 # define DEBUG_Uv(a)
5059 # define DEBUG_Pv(a)
5060 # define DEBUG_Lv(a)
5061 # define DEBUG_yv(a)
5062 #endif /* DEBUGGING */
5065 #define DEBUG_SCOPE(where) \
5067 Perl_deb(aTHX_ "%s scope %ld (savestack=%ld) at %s:%d\n", \
5068 where, (long)PL_scopestack_ix, (long)PL_savestack_ix, \
5069 __FILE__, __LINE__));
5071 /* Keep the old croak based assert for those who want it, and as a fallback if
5072 the platform is so heretically non-ANSI that it can't assert. */
5074 #define Perl_assert(what) PERL_DEB2( \
5075 ((what) ? ((void) 0) : \
5076 (Perl_croak_nocontext("Assertion %s failed: file \"" __FILE__ \
5077 "\", line %d", STRINGIFY(what), __LINE__), \
5078 (void) 0)), ((void)0))
5080 /* assert() gets defined if DEBUGGING.
5081 * If no DEBUGGING, the <assert.h> has not been included. */
5083 # define assert(what) Perl_assert(what)
5086 # define assert_(what) assert(what),
5088 # define assert_(what)
5092 I32 (*uf_val)(pTHX_ IV, SV*);
5093 I32 (*uf_set)(pTHX_ IV, SV*);
5097 /* In pre-5.7-Perls the PERL_MAGIC_uvar magic didn't get the thread context.
5098 * XS code wanting to be backward compatible can do something
5099 * like the following:
5101 #ifndef PERL_MG_UFUNC
5102 #define PERL_MG_UFUNC(name,ix,sv) I32 name(IV ix, SV *sv)
5105 static PERL_MG_UFUNC(foo_get, index, val)
5115 #ifndef PERL_MG_UFUNC
5116 #define PERL_MG_UFUNC(name,ix,sv) I32 name(pTHX_ IV ix, SV *sv)
5121 /* isfinite and others are here rather than in math.h as C99 stipulates */
5126 # if !defined(WIN32) && !defined(VMS)
5128 char *crypt (const char*, const char*);
5130 # endif /* !WIN32 */
5133 char *getlogin (void);
5135 # endif /* !WIN32 */
5136 #endif /* !__cplusplus */
5138 /* Fixme on VMS. This needs to be a run-time, not build time options */
5139 /* Also rename() is affected by this */
5140 #ifdef UNLINK_ALL_VERSIONS /* Currently only makes sense for VMS */
5141 #define UNLINK unlnk
5142 I32 unlnk (pTHX_ const char*);
5144 #define UNLINK PerlLIO_unlink
5147 /* some versions of glibc are missing the setresuid() proto */
5148 #if defined(HAS_SETRESUID) && !defined(HAS_SETRESUID_PROTO)
5149 int setresuid(uid_t ruid, uid_t euid, uid_t suid);
5151 /* some versions of glibc are missing the setresgid() proto */
5152 #if defined(HAS_SETRESGID) && !defined(HAS_SETRESGID_PROTO)
5153 int setresgid(gid_t rgid, gid_t egid, gid_t sgid);
5156 #ifndef HAS_SETREUID
5157 # ifdef HAS_SETRESUID
5158 # define setreuid(r,e) setresuid(r,e,(Uid_t)-1)
5159 # define HAS_SETREUID
5162 #ifndef HAS_SETREGID
5163 # ifdef HAS_SETRESGID
5164 # define setregid(r,e) setresgid(r,e,(Gid_t)-1)
5165 # define HAS_SETREGID
5169 /* Sighandler_t defined in iperlsys.h */
5171 #ifdef HAS_SIGACTION
5172 typedef struct sigaction Sigsave_t;
5174 typedef Sighandler_t Sigsave_t;
5185 # define RUNOPS_DEFAULT Perl_runops_debug
5187 # define RUNOPS_DEFAULT Perl_runops_standard
5190 #if defined(USE_PERLIO)
5191 EXTERN_C void PerlIO_teardown(void);
5192 # ifdef USE_ITHREADS
5193 # define PERLIO_INIT MUTEX_INIT(&PL_perlio_mutex)
5194 # define PERLIO_TERM \
5196 PerlIO_teardown(); \
5197 MUTEX_DESTROY(&PL_perlio_mutex);\
5200 # define PERLIO_INIT
5201 # define PERLIO_TERM PerlIO_teardown()
5204 # define PERLIO_INIT
5205 # define PERLIO_TERM
5209 # ifdef MUTEX_INIT_CALLS_MALLOC
5210 # define MALLOC_INIT \
5212 PL_malloc_mutex = NULL; \
5213 MUTEX_INIT(&PL_malloc_mutex); \
5215 # define MALLOC_TERM \
5217 perl_mutex tmp = PL_malloc_mutex; \
5218 PL_malloc_mutex = NULL; \
5219 MUTEX_DESTROY(&tmp); \
5222 # define MALLOC_INIT MUTEX_INIT(&PL_malloc_mutex)
5223 # define MALLOC_TERM MUTEX_DESTROY(&PL_malloc_mutex)
5226 # define MALLOC_INIT
5227 # define MALLOC_TERM
5230 #if defined(MULTIPLICITY)
5232 struct perl_memory_debug_header;
5233 struct perl_memory_debug_header {
5235 # if defined(PERL_POISON) || defined(PERL_DEBUG_READONLY_COW)
5238 struct perl_memory_debug_header *prev;
5239 struct perl_memory_debug_header *next;
5240 # ifdef PERL_DEBUG_READONLY_COW
5245 #elif defined(PERL_DEBUG_READONLY_COW)
5247 struct perl_memory_debug_header;
5248 struct perl_memory_debug_header {
5254 #if defined (PERL_TRACK_MEMPOOL) || defined (PERL_DEBUG_READONLY_COW)
5256 # define PERL_MEMORY_DEBUG_HEADER_SIZE \
5257 (sizeof(struct perl_memory_debug_header) + \
5258 (MEM_ALIGNBYTES - sizeof(struct perl_memory_debug_header) \
5259 %MEM_ALIGNBYTES) % MEM_ALIGNBYTES)
5262 # define PERL_MEMORY_DEBUG_HEADER_SIZE 0
5265 #ifdef PERL_TRACK_MEMPOOL
5266 # ifdef PERL_DEBUG_READONLY_COW
5267 # define INIT_TRACK_MEMPOOL(header, interp) \
5269 (header).interpreter = (interp); \
5270 (header).prev = (header).next = &(header); \
5271 (header).readonly = 0; \
5274 # define INIT_TRACK_MEMPOOL(header, interp) \
5276 (header).interpreter = (interp); \
5277 (header).prev = (header).next = &(header); \
5281 # define INIT_TRACK_MEMPOOL(header, interp)
5284 #ifdef I_MALLOCMALLOC
5285 /* Needed for malloc_size(), malloc_good_size() on some systems */
5286 # include <malloc/malloc.h>
5290 # define Perl_safesysmalloc_size(where) Perl_malloced_size(where)
5292 # if defined(HAS_MALLOC_SIZE) && !defined(PERL_DEBUG_READONLY_COW)
5293 # ifdef PERL_TRACK_MEMPOOL
5294 # define Perl_safesysmalloc_size(where) \
5295 (malloc_size(((char *)(where)) - PERL_MEMORY_DEBUG_HEADER_SIZE) - PERL_MEMORY_DEBUG_HEADER_SIZE)
5297 # define Perl_safesysmalloc_size(where) malloc_size(where)
5300 # ifdef HAS_MALLOC_GOOD_SIZE
5301 # ifdef PERL_TRACK_MEMPOOL
5302 # define Perl_malloc_good_size(how_much) \
5303 (malloc_good_size((how_much) + PERL_MEMORY_DEBUG_HEADER_SIZE) - PERL_MEMORY_DEBUG_HEADER_SIZE)
5305 # define Perl_malloc_good_size(how_much) malloc_good_size(how_much)
5308 /* Having this as the identity operation makes some code simpler. */
5309 # define Perl_malloc_good_size(how_much) (how_much)
5313 typedef int (*runops_proc_t)(pTHX);
5314 typedef void (*share_proc_t) (pTHX_ SV *sv);
5315 typedef int (*thrhook_proc_t) (pTHX);
5316 typedef OP* (*PPADDR_t[]) (pTHX);
5317 typedef bool (*destroyable_proc_t) (pTHX_ SV *sv);
5318 typedef void (*despatch_signals_proc_t) (pTHX);
5320 #if defined(__DYNAMIC__) && defined(PERL_DARWIN) && defined(PERL_CORE)
5321 # include <crt_externs.h> /* for the env array */
5322 # define environ (*_NSGetEnviron())
5323 #elif defined(USE_ENVIRON_ARRAY) && !defined(environ)
5324 /* VMS and some other platforms don't use the environ array */
5325 EXTERN_C char **environ; /* environment variables supplied via exec */
5328 #define PERL_PATCHLEVEL_H_IMPLICIT
5329 #include "patchlevel.h"
5330 #undef PERL_PATCHLEVEL_H_IMPLICIT
5332 #define PERL_VERSION_STRING STRINGIFY(PERL_REVISION) "." \
5333 STRINGIFY(PERL_VERSION) "." \
5334 STRINGIFY(PERL_SUBVERSION)
5336 #define PERL_API_VERSION_STRING STRINGIFY(PERL_API_REVISION) "." \
5337 STRINGIFY(PERL_API_VERSION) "." \
5338 STRINGIFY(PERL_API_SUBVERSION)
5342 /* handy constants */
5343 EXTCONST char PL_warn_uninit[]
5344 INIT("Use of uninitialized value%s%s%s");
5345 EXTCONST char PL_warn_uninit_sv[]
5346 INIT("Use of uninitialized value%" SVf "%s%s");
5347 EXTCONST char PL_warn_nosemi[]
5348 INIT("Semicolon seems to be missing");
5349 EXTCONST char PL_warn_reserved[]
5350 INIT("Unquoted string \"%s\" may clash with future reserved word");
5351 EXTCONST char PL_warn_nl[]
5352 INIT("Unsuccessful %s on filename containing newline");
5353 EXTCONST char PL_no_wrongref[]
5354 INIT("Can't use %s ref as %s ref");
5355 /* The core no longer needs this here. If you require the string constant,
5356 please inline a copy into your own code. */
5357 EXTCONST char PL_no_symref[] __attribute__deprecated__
5358 INIT("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use");
5359 EXTCONST char PL_no_symref_sv[]
5360 INIT("Can't use string (\"%" SVf32 "\"%s) as %s ref while \"strict refs\" in use");
5362 EXTCONST char PL_no_usym[]
5363 INIT("Can't use an undefined value as %s reference");
5364 EXTCONST char PL_no_aelem[]
5365 INIT("Modification of non-creatable array value attempted, subscript %d");
5366 EXTCONST char PL_no_helem_sv[]
5367 INIT("Modification of non-creatable hash value attempted, subscript \"%" SVf "\"");
5368 EXTCONST char PL_no_modify[]
5369 INIT("Modification of a read-only value attempted");
5370 EXTCONST char PL_no_mem[sizeof("Out of memory!\n")]
5371 INIT("Out of memory!\n");
5372 EXTCONST char PL_no_security[]
5373 INIT("Insecure dependency in %s%s");
5374 EXTCONST char PL_no_sock_func[]
5375 INIT("Unsupported socket function \"%s\" called");
5376 EXTCONST char PL_no_dir_func[]
5377 INIT("Unsupported directory function \"%s\" called");
5378 EXTCONST char PL_no_func[]
5379 INIT("The %s function is unimplemented");
5380 EXTCONST char PL_no_myglob[]
5381 INIT("\"%s\" %s %s can't be in a package");
5382 EXTCONST char PL_no_localize_ref[]
5383 INIT("Can't localize through a reference");
5384 EXTCONST char PL_memory_wrap[]
5385 INIT("panic: memory wrap");
5386 EXTCONST char PL_extended_cp_format[]
5387 INIT("Code point 0x%" UVXf " is not Unicode, requires a Perl extension,"
5388 " and so is not portable");
5389 EXTCONST char PL_Yes[]
5391 EXTCONST char PL_No[]
5393 EXTCONST char PL_Zero[]
5397 =for apidoc_section $numeric
5398 =for apidoc AmTuU|const char *|PL_hexdigit|U8 value
5400 This array, indexed by an integer, converts that value into the character that
5401 represents it. For example, if the input is 8, the return will be a string
5402 whose first character is '8'. What is actually returned is a pointer into a
5403 string. All you are interested in is the first character of that string. To
5404 get uppercase letters (for the values 10..15), add 16 to the index. Hence,
5405 C<PL_hexdigit[11]> is C<'b'>, and C<PL_hexdigit[11+16]> is C<'B'>. Adding 16
5406 to an index whose representation is '0'..'9' yields the same as not adding 16.
5407 Indices outside the range 0..31 result in (bad) undedefined behavior.
5411 EXTCONST char PL_hexdigit[]
5412 INIT("0123456789abcdef0123456789ABCDEF");
5414 EXT char PL_WARN_ALL
5416 EXT char PL_WARN_NONE
5419 /* This is constant on most architectures, a global on OS/2 */
5421 EXTCONST char PL_sh_path[]
5422 INIT(SH_PATH); /* full path of shell */
5426 EXTCONST char PL_cshname[]
5428 # define PL_cshlen (sizeof(CSH "") - 1)
5431 /* These are baked at compile time into any shared perl library.
5432 In future releases this will allow us in main() to sanity test the
5433 library we're linking against. */
5435 EXTCONST U8 PL_revision
5436 INIT(PERL_REVISION);
5437 EXTCONST U8 PL_version
5439 EXTCONST U8 PL_subversion
5440 INIT(PERL_SUBVERSION);
5442 EXTCONST char PL_uuemap[65]
5443 INIT("`!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_");
5445 /* a special string address whose value is "isa", but which perl knows
5446 * to treat as if it were really "DOES" when printing the method name in
5447 * the "Can't call method '%s'" error message */
5448 EXTCONST char PL_isa_DOES[]
5452 EXTCONST char PL_uudmap[256] =
5453 # include "uudmap.h"
5455 EXTCONST char PL_bitcount[256] =
5456 # include "bitcount.h"
5458 EXTCONST char* const PL_sig_name[] = { SIG_NAME };
5459 EXTCONST int PL_sig_num[] = { SIG_NUM };
5461 EXTCONST char PL_uudmap[256];
5462 EXTCONST char PL_bitcount[256];
5463 EXTCONST char* const PL_sig_name[];
5464 EXTCONST int PL_sig_num[];
5467 /* fast conversion and case folding tables. The folding tables complement the
5468 * fold, so that 'a' maps to 'A' and 'A' maps to 'a', ignoring more complicated
5469 * folds such as outside the range or to multiple characters. */
5474 /* The EBCDIC fold table depends on the code page, and hence is found in
5475 * ebcdic_tables.h */
5477 EXTCONST unsigned char PL_fold[] = {
5478 0, 1, 2, 3, 4, 5, 6, 7,
5479 8, 9, 10, 11, 12, 13, 14, 15,
5480 16, 17, 18, 19, 20, 21, 22, 23,
5481 24, 25, 26, 27, 28, 29, 30, 31,
5482 32, 33, 34, 35, 36, 37, 38, 39,
5483 40, 41, 42, 43, 44, 45, 46, 47,
5484 48, 49, 50, 51, 52, 53, 54, 55,
5485 56, 57, 58, 59, 60, 61, 62, 63,
5486 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
5487 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
5488 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
5489 'x', 'y', 'z', 91, 92, 93, 94, 95,
5490 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
5491 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
5492 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
5493 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
5494 128, 129, 130, 131, 132, 133, 134, 135,
5495 136, 137, 138, 139, 140, 141, 142, 143,
5496 144, 145, 146, 147, 148, 149, 150, 151,
5497 152, 153, 154, 155, 156, 157, 158, 159,
5498 160, 161, 162, 163, 164, 165, 166, 167,
5499 168, 169, 170, 171, 172, 173, 174, 175,
5500 176, 177, 178, 179, 180, 181, 182, 183,
5501 184, 185, 186, 187, 188, 189, 190, 191,
5502 192, 193, 194, 195, 196, 197, 198, 199,
5503 200, 201, 202, 203, 204, 205, 206, 207,
5504 208, 209, 210, 211, 212, 213, 214, 215,
5505 216, 217, 218, 219, 220, 221, 222, 223,
5506 224, 225, 226, 227, 228, 229, 230, 231,
5507 232, 233, 234, 235, 236, 237, 238, 239,
5508 240, 241, 242, 243, 244, 245, 246, 247,
5509 248, 249, 250, 251, 252, 253, 254, 255
5512 EXTCONST unsigned char PL_fold_latin1[] = {
5513 /* Full latin1 complement folding, except for three problematic code points:
5514 * Micro sign (181 = 0xB5) and y with diearesis (255 = 0xFF) have their
5515 * fold complements outside the Latin1 range, so can't match something
5516 * that isn't in utf8.
5517 * German lower case sharp s (223 = 0xDF) folds to two characters, 'ss',
5518 * not one, so can't be represented in this table.
5520 * All have to be specially handled */
5521 0, 1, 2, 3, 4, 5, 6, 7,
5522 8, 9, 10, 11, 12, 13, 14, 15,
5523 16, 17, 18, 19, 20, 21, 22, 23,
5524 24, 25, 26, 27, 28, 29, 30, 31,
5525 32, 33, 34, 35, 36, 37, 38, 39,
5526 40, 41, 42, 43, 44, 45, 46, 47,
5527 48, 49, 50, 51, 52, 53, 54, 55,
5528 56, 57, 58, 59, 60, 61, 62, 63,
5529 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
5530 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
5531 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
5532 'x', 'y', 'z', 91, 92, 93, 94, 95,
5533 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
5534 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
5535 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
5536 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
5537 128, 129, 130, 131, 132, 133, 134, 135,
5538 136, 137, 138, 139, 140, 141, 142, 143,
5539 144, 145, 146, 147, 148, 149, 150, 151,
5540 152, 153, 154, 155, 156, 157, 158, 159,
5541 160, 161, 162, 163, 164, 165, 166, 167,
5542 168, 169, 170, 171, 172, 173, 174, 175,
5543 176, 177, 178, 179, 180, 181 /*micro */, 182, 183,
5544 184, 185, 186, 187, 188, 189, 190, 191,
5545 192+32, 193+32, 194+32, 195+32, 196+32, 197+32, 198+32, 199+32,
5546 200+32, 201+32, 202+32, 203+32, 204+32, 205+32, 206+32, 207+32,
5547 208+32, 209+32, 210+32, 211+32, 212+32, 213+32, 214+32, 215,
5548 216+32, 217+32, 218+32, 219+32, 220+32, 221+32, 222+32, 223 /* ss */,
5549 224-32, 225-32, 226-32, 227-32, 228-32, 229-32, 230-32, 231-32,
5550 232-32, 233-32, 234-32, 235-32, 236-32, 237-32, 238-32, 239-32,
5551 240-32, 241-32, 242-32, 243-32, 244-32, 245-32, 246-32, 247,
5552 248-32, 249-32, 250-32, 251-32, 252-32, 253-32, 254-32,
5553 255 /* y with diaeresis */
5556 /* If these tables are accessed through ebcdic, the access will be converted to
5558 EXTCONST unsigned char PL_latin1_lc[] = { /* lowercasing */
5559 0, 1, 2, 3, 4, 5, 6, 7,
5560 8, 9, 10, 11, 12, 13, 14, 15,
5561 16, 17, 18, 19, 20, 21, 22, 23,
5562 24, 25, 26, 27, 28, 29, 30, 31,
5563 32, 33, 34, 35, 36, 37, 38, 39,
5564 40, 41, 42, 43, 44, 45, 46, 47,
5565 48, 49, 50, 51, 52, 53, 54, 55,
5566 56, 57, 58, 59, 60, 61, 62, 63,
5567 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
5568 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
5569 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
5570 'x', 'y', 'z', 91, 92, 93, 94, 95,
5571 96, 97, 98, 99, 100, 101, 102, 103,
5572 104, 105, 106, 107, 108, 109, 110, 111,
5573 112, 113, 114, 115, 116, 117, 118, 119,
5574 120, 121, 122, 123, 124, 125, 126, 127,
5575 128, 129, 130, 131, 132, 133, 134, 135,
5576 136, 137, 138, 139, 140, 141, 142, 143,
5577 144, 145, 146, 147, 148, 149, 150, 151,
5578 152, 153, 154, 155, 156, 157, 158, 159,
5579 160, 161, 162, 163, 164, 165, 166, 167,
5580 168, 169, 170, 171, 172, 173, 174, 175,
5581 176, 177, 178, 179, 180, 181, 182, 183,
5582 184, 185, 186, 187, 188, 189, 190, 191,
5583 192+32, 193+32, 194+32, 195+32, 196+32, 197+32, 198+32, 199+32,
5584 200+32, 201+32, 202+32, 203+32, 204+32, 205+32, 206+32, 207+32,
5585 208+32, 209+32, 210+32, 211+32, 212+32, 213+32, 214+32, 215,
5586 216+32, 217+32, 218+32, 219+32, 220+32, 221+32, 222+32, 223,
5587 224, 225, 226, 227, 228, 229, 230, 231,
5588 232, 233, 234, 235, 236, 237, 238, 239,
5589 240, 241, 242, 243, 244, 245, 246, 247,
5590 248, 249, 250, 251, 252, 253, 254, 255
5593 /* upper and title case of latin1 characters, modified so that the three tricky
5594 * ones are mapped to 255 (which is one of the three) */
5595 EXTCONST unsigned char PL_mod_latin1_uc[] = {
5596 0, 1, 2, 3, 4, 5, 6, 7,
5597 8, 9, 10, 11, 12, 13, 14, 15,
5598 16, 17, 18, 19, 20, 21, 22, 23,
5599 24, 25, 26, 27, 28, 29, 30, 31,
5600 32, 33, 34, 35, 36, 37, 38, 39,
5601 40, 41, 42, 43, 44, 45, 46, 47,
5602 48, 49, 50, 51, 52, 53, 54, 55,
5603 56, 57, 58, 59, 60, 61, 62, 63,
5604 64, 65, 66, 67, 68, 69, 70, 71,
5605 72, 73, 74, 75, 76, 77, 78, 79,
5606 80, 81, 82, 83, 84, 85, 86, 87,
5607 88, 89, 90, 91, 92, 93, 94, 95,
5608 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
5609 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
5610 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
5611 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
5612 128, 129, 130, 131, 132, 133, 134, 135,
5613 136, 137, 138, 139, 140, 141, 142, 143,
5614 144, 145, 146, 147, 148, 149, 150, 151,
5615 152, 153, 154, 155, 156, 157, 158, 159,
5616 160, 161, 162, 163, 164, 165, 166, 167,
5617 168, 169, 170, 171, 172, 173, 174, 175,
5618 176, 177, 178, 179, 180, 255 /*micro*/, 182, 183,
5619 184, 185, 186, 187, 188, 189, 190, 191,
5620 192, 193, 194, 195, 196, 197, 198, 199,
5621 200, 201, 202, 203, 204, 205, 206, 207,
5622 208, 209, 210, 211, 212, 213, 214, 215,
5623 216, 217, 218, 219, 220, 221, 222,
5624 # if UNICODE_MAJOR_VERSION > 2 \
5625 || (UNICODE_MAJOR_VERSION == 2 && UNICODE_DOT_VERSION >= 1 \
5626 && UNICODE_DOT_DOT_VERSION >= 8)
5628 # else /* uc(sharp s) is 'sharp s' itself in early unicode */
5631 224-32, 225-32, 226-32, 227-32, 228-32, 229-32, 230-32, 231-32,
5632 232-32, 233-32, 234-32, 235-32, 236-32, 237-32, 238-32, 239-32,
5633 240-32, 241-32, 242-32, 243-32, 244-32, 245-32, 246-32, 247,
5634 248-32, 249-32, 250-32, 251-32, 252-32, 253-32, 254-32, 255
5636 # endif /* !EBCDIC, but still in DOINIT */
5637 #else /* ! DOINIT */
5639 EXTCONST unsigned char PL_fold[];
5640 EXTCONST unsigned char PL_fold_latin1[];
5641 EXTCONST unsigned char PL_mod_latin1_uc[];
5642 EXTCONST unsigned char PL_latin1_lc[];
5646 /* Although only used for debugging, these constants must be available in
5647 * non-debugging builds too, since they're used in ext/re/re_exec.c,
5648 * which has DEBUGGING enabled always */
5650 EXTCONST char* const PL_block_type[] = {
5667 EXTCONST char* PL_block_type[];
5670 /* These are all the compile time options that affect binary compatibility.
5671 Other compile time options that are binary compatible are in perl.c
5672 (in S_Internals_V()). Both are combined for the output of perl -V
5673 However, this string will be embedded in any shared perl library, which will
5674 allow us add a comparison check in perlmain.c in the near future. */
5676 EXTCONST char PL_bincompat_options[] =
5677 # ifdef DEBUG_LEAKING_SCALARS
5678 " DEBUG_LEAKING_SCALARS"
5680 # ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
5681 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
5686 # ifdef HAVE_INTERP_INTERN
5687 " HAVE_INTERP_INTERN"
5689 # ifdef MULTIPLICITY
5695 # ifdef NO_HASH_SEED
5698 # ifdef PERLIO_LAYERS
5701 # ifdef PERL_DEBUG_READONLY_COW
5702 " PERL_DEBUG_READONLY_COW"
5704 # ifdef PERL_DEBUG_READONLY_OPS
5705 " PERL_DEBUG_READONLY_OPS"
5707 # ifdef PERL_HASH_FUNC_DEFINE
5708 /* note that this is different from the others, PERL_HASH_FUNC_DEFINE
5709 * is a string which says which define was defined. */
5710 " " PERL_HASH_FUNC_DEFINE
5712 # ifdef PERL_HASH_USE_SBOX32
5713 " PERL_HASH_USE_SBOX32"
5715 " PERL_HASH_NO_SBOX32"
5717 # ifdef PERL_IMPLICIT_SYS
5718 " PERL_IMPLICIT_SYS"
5723 # ifdef PERL_SAWAMPERSAND
5724 " PERL_SAWAMPERSAND"
5726 # ifdef PERL_TRACK_MEMPOOL
5727 " PERL_TRACK_MEMPOOL"
5729 # ifdef PERL_USES_PL_PIDSTATUS
5730 " PERL_USES_PL_PIDSTATUS"
5732 # ifdef USE_64_BIT_ALL
5735 # ifdef USE_64_BIT_INT
5741 # ifdef USE_ITHREADS
5744 # ifdef USE_LARGE_FILES
5747 # ifdef USE_LOCALE_COLLATE
5748 " USE_LOCALE_COLLATE"
5750 # ifdef USE_LOCALE_NUMERIC
5751 " USE_LOCALE_NUMERIC"
5753 # ifdef USE_LOCALE_TIME
5756 # ifdef USE_LONG_DOUBLE
5762 # ifdef USE_QUADMATH
5765 # ifdef USE_REENTRANT_API
5766 " USE_REENTRANT_API"
5771 # ifdef VMS_DO_SOCKETS
5774 # ifdef VMS_SHORTEN_LONG_SYMBOLS
5775 " VMS_SHORTEN_LONG_SYMBOLS"
5777 # ifdef VMS_WE_ARE_CASE_SENSITIVE
5778 " VMS_SYMBOL_CASE_AS_IS"
5780 ""; /* keep this on a line by itself, WITH the empty string */
5782 EXTCONST char PL_bincompat_options[];
5785 #ifndef PERL_SET_PHASE
5786 # define PERL_SET_PHASE(new_phase) \
5787 PERL_DTRACE_PROBE_PHASE(new_phase); \
5788 PL_phase = new_phase;
5791 /* The interpreter phases. If these ever change, PL_phase_names right below will
5792 * need to be updated accordingly. */
5794 PERL_PHASE_CONSTRUCT = 0,
5795 PERL_PHASE_START = 1,
5796 PERL_PHASE_CHECK = 2,
5797 PERL_PHASE_INIT = 3,
5800 PERL_PHASE_DESTRUCT = 6
5804 EXTCONST char *const PL_phase_names[] = {
5814 EXTCONST char *const PL_phase_names[];
5818 =for apidoc_section $utility
5820 =for apidoc phase_name
5822 Returns the given phase's name as a NUL-terminated string.
5824 For example, to print a stack trace that includes the current
5825 interpreter phase you might do:
5827 const char* phase_name = phase_name(PL_phase);
5828 mess("This is weird. (Perl phase: %s)", phase_name);
5833 #define phase_name(phase) (PL_phase_names[phase])
5836 /* Do not use this macro. It only exists for extensions that rely on PL_dirty
5837 * instead of using the newer PL_phase, which provides everything PL_dirty
5838 * provided, and more. */
5839 # define PL_dirty cBOOL(PL_phase == PERL_PHASE_DESTRUCT)
5841 # define PL_amagic_generation PL_na
5842 # define PL_encoding ((SV *)NULL)
5843 #endif /* !PERL_CORE */
5845 #define PL_hints PL_compiling.cop_hints
5846 #define PL_maxo MAXO
5850 /*****************************************************************************/
5851 /* This lexer/parser stuff is currently global since yacc is hard to reenter */
5852 /*****************************************************************************/
5853 /* XXX This needs to be revisited, since BEGIN makes yacc re-enter... */
5856 /* LynxOS defines these in scsi.h which is included via ioctl.h */
5865 #define LEX_NOTPARSING 11 /* borrowed from toke.c */
5873 XATTRBLOCK, /* next token should be an attribute or block */
5874 XATTRTERM, /* next token should be an attribute, or block in a term */
5878 XTERMORDORDOR /* evil hack */
5879 /* update exp_name[] in toke.c if adding to this enum */
5882 #define KEY_sigvar 0xFFFF /* fake keyword representing a signature var */
5884 /* Hints are now stored in a dedicated U32, so the bottom 8 bits are no longer
5885 special and there is no need for HINT_PRIVATE_MASK for COPs.
5887 NOTE: The typical module using these has the bit value hard-coded, so don't
5888 blindly change the values of these.
5890 If we run out of bits, the 2 locale ones could be combined. The PARTIAL one
5891 is for "use locale 'FOO'" which excludes some categories. It requires going
5892 to %^H to find out which are in and which are out. This could be extended
5893 for the normal case of a plain HINT_LOCALE, so that %^H would be used for
5895 #define HINT_INTEGER 0x00000001 /* integer pragma */
5896 #define HINT_STRICT_REFS 0x00000002 /* strict pragma */
5897 #define HINT_LOCALE 0x00000004 /* locale pragma */
5898 #define HINT_BYTES 0x00000008 /* bytes pragma */
5899 #define HINT_LOCALE_PARTIAL 0x00000010 /* locale, but a subset of categories */
5901 #define HINT_EXPLICIT_STRICT_REFS 0x00000020 /* strict.pm */
5902 #define HINT_EXPLICIT_STRICT_SUBS 0x00000040 /* strict.pm */
5903 #define HINT_EXPLICIT_STRICT_VARS 0x00000080 /* strict.pm */
5905 #define HINT_BLOCK_SCOPE 0x00000100
5906 #define HINT_STRICT_SUBS 0x00000200 /* strict pragma */
5907 #define HINT_STRICT_VARS 0x00000400 /* strict pragma */
5908 #define HINT_UNI_8_BIT 0x00000800 /* unicode_strings feature */
5910 /* The HINT_NEW_* constants are used by the overload pragma */
5911 #define HINT_NEW_INTEGER 0x00001000
5912 #define HINT_NEW_FLOAT 0x00002000
5913 #define HINT_NEW_BINARY 0x00004000
5914 #define HINT_NEW_STRING 0x00008000
5915 #define HINT_NEW_RE 0x00010000
5916 #define HINT_LOCALIZE_HH 0x00020000 /* %^H needs to be copied */
5917 #define HINT_LEXICAL_IO_IN 0x00040000 /* ${^OPEN} is set for input */
5918 #define HINT_LEXICAL_IO_OUT 0x00080000 /* ${^OPEN} is set for output */
5920 #define HINT_RE_TAINT 0x00100000 /* re pragma */
5921 #define HINT_RE_EVAL 0x00200000 /* re pragma */
5923 #define HINT_FILETEST_ACCESS 0x00400000 /* filetest pragma */
5924 #define HINT_UTF8 0x00800000 /* utf8 pragma */
5926 #define HINT_NO_AMAGIC 0x01000000 /* overloading pragma */
5928 #define HINT_RE_FLAGS 0x02000000 /* re '/xism' pragma */
5930 #define HINT_FEATURE_MASK 0x3c000000 /* 4 bits for feature bundles */
5932 /* Note: Used for HINT_M_VMSISH_*,
5933 currently defined by vms/vmsish.h:
5938 #define HINT_ALL_STRICT HINT_STRICT_REFS \
5939 | HINT_STRICT_SUBS \
5942 #ifdef USE_STRICT_BY_DEFAULT
5943 #define HINTS_DEFAULT HINT_ALL_STRICT
5945 #define HINTS_DEFAULT 0
5948 /* flags for PL_sawampersand */
5950 #define SAWAMPERSAND_LEFT 1 /* saw $` */
5951 #define SAWAMPERSAND_MIDDLE 2 /* saw $& */
5952 #define SAWAMPERSAND_RIGHT 4 /* saw $' */
5954 #ifndef PERL_SAWAMPERSAND
5955 # define PL_sawampersand \
5956 (SAWAMPERSAND_LEFT|SAWAMPERSAND_MIDDLE|SAWAMPERSAND_RIGHT)
5959 /* Used for debugvar magic */
5960 #define DBVARMG_SINGLE 0
5961 #define DBVARMG_TRACE 1
5962 #define DBVARMG_SIGNAL 2
5963 #define DBVARMG_COUNT 3
5965 #define PL_DBsingle_iv (PL_DBcontrol[DBVARMG_SINGLE])
5966 #define PL_DBtrace_iv (PL_DBcontrol[DBVARMG_TRACE])
5967 #define PL_DBsignal_iv (PL_DBcontrol[DBVARMG_SIGNAL])
5969 /* Various states of the input record separator SV (rs) */
5970 #define RsSNARF(sv) (! SvOK(sv))
5971 #define RsSIMPLE(sv) (SvOK(sv) && (! SvPOK(sv) || SvCUR(sv)))
5972 #define RsPARA(sv) (SvPOK(sv) && ! SvCUR(sv))
5973 #define RsRECORD(sv) (SvROK(sv) && (SvIV(SvRV(sv)) > 0))
5975 /* A struct for keeping various DEBUGGING related stuff,
5976 * neatly packed. Currently only scratch variables for
5977 * constructing debug output are included. Needed always,
5978 * not just when DEBUGGING, though, because of the re extension. c*/
5979 struct perl_debug_pad {
5983 #define PERL_DEBUG_PAD(i) &(PL_debug_pad.pad[i])
5984 #define PERL_DEBUG_PAD_ZERO(i) (SvPVX(PERL_DEBUG_PAD(i))[0] = 0, \
5985 (((XPV*) SvANY(PERL_DEBUG_PAD(i)))->xpv_cur = 0), \
5988 /* Enable variables which are pointers to functions */
5989 typedef void (*peep_t)(pTHX_ OP* o);
5990 typedef regexp* (*regcomp_t) (pTHX_ char* exp, char* xend, PMOP* pm);
5991 typedef I32 (*regexec_t) (pTHX_ regexp* prog, char* stringarg,
5992 char* strend, char* strbeg, I32 minend,
5993 SV* screamer, void* data, U32 flags);
5994 typedef char* (*re_intuit_start_t) (pTHX_ regexp *prog, SV *sv,
5995 char *strpos, char *strend,
5997 re_scream_pos_data *d);
5998 typedef SV* (*re_intuit_string_t) (pTHX_ regexp *prog);
5999 typedef void (*regfree_t) (pTHX_ struct regexp* r);
6000 typedef regexp* (*regdupe_t) (pTHX_ const regexp* r, CLONE_PARAMS *param);
6001 typedef I32 (*re_fold_t)(pTHX_ const char *, char const *, I32);
6003 typedef void (*DESTRUCTORFUNC_NOCONTEXT_t) (void*);
6004 typedef void (*DESTRUCTORFUNC_t) (pTHX_ void*);
6005 typedef void (*SVFUNC_t) (pTHX_ SV* const);
6006 typedef I32 (*SVCOMPARE_t) (pTHX_ SV* const, SV* const);
6007 typedef void (*XSINIT_t) (pTHX);
6008 typedef void (*ATEXIT_t) (pTHX_ void*);
6009 typedef void (*XSUBADDR_t) (pTHX_ CV *);
6011 enum Perl_custom_infix_precedence {
6012 /* These numbers are spaced out to give room to insert new values as
6013 * required. They form part of the ABI contract with XS::Parse::Infix so
6014 * they should not be changed within a stable release cycle, but they can
6015 * be freely altered during a development cycle because no ABI guarantees
6016 * are made at that time */
6017 INFIX_PREC_LOW = 10, /* non-associative */
6018 INFIX_PREC_LOGICAL_OR_LOW = 30, /* left-associative, as `or` */
6019 INFIX_PREC_LOGICAL_AND_LOW = 40, /* left-associative, as `and` */
6020 INFIX_PREC_ASSIGN = 50, /* right-associative, as `=` */
6021 INFIX_PREC_LOGICAL_OR = 70, /* left-associative, as `||` */
6022 INFIX_PREC_LOGICAL_AND = 80, /* left-associative, as `&&` */
6023 INFIX_PREC_REL = 90, /* non-associative, just below `==` */
6024 INFIX_PREC_ADD = 110, /* left-associative, as `+` */
6025 INFIX_PREC_MUL = 130, /* left-associative, as `*` */
6026 INFIX_PREC_POW = 150, /* right-associative, as `**` */
6027 INFIX_PREC_HIGH = 170, /* non-associative */
6028 /* Try to keep within the range of a U8 in case we need to split the field
6031 struct Perl_custom_infix;
6032 struct Perl_custom_infix {
6033 enum Perl_custom_infix_precedence prec;
6034 void (*parse)(pTHX_ SV **opdata, struct Perl_custom_infix *); /* optional */
6035 OP *(*build_op)(pTHX_ SV **opdata, OP *lhs, OP *rhs, struct Perl_custom_infix *);
6038 typedef OP* (*Perl_ppaddr_t)(pTHX);
6039 typedef OP* (*Perl_check_t) (pTHX_ OP*);
6040 typedef void(*Perl_ophook_t)(pTHX_ OP*);
6041 typedef int (*Perl_keyword_plugin_t)(pTHX_ char*, STRLEN, OP**);
6042 typedef STRLEN (*Perl_infix_plugin_t)(pTHX_ char*, STRLEN, struct Perl_custom_infix **);
6043 typedef void(*Perl_cpeep_t)(pTHX_ OP *, OP *);
6045 typedef void(*globhook_t)(pTHX);
6047 #define KEYWORD_PLUGIN_DECLINE 0
6048 #define KEYWORD_PLUGIN_STMT 1
6049 #define KEYWORD_PLUGIN_EXPR 2
6051 /* Interpreter exitlist entry */
6052 typedef struct exitlistentry {
6053 void (*fn) (pTHX_ void*);
6055 } PerlExitListEntry;
6057 /* if you only have signal() and it resets on each signal, FAKE_PERSISTENT_SIGNAL_HANDLERS fixes */
6058 /* These have to be before perlvars.h */
6059 #if !defined(HAS_SIGACTION) && defined(VMS)
6060 # define FAKE_PERSISTENT_SIGNAL_HANDLERS
6062 /* if we're doing kill() with sys$sigprc on VMS, FAKE_DEFAULT_SIGNAL_HANDLERS */
6063 #if defined(KILL_BY_SIGPRC)
6064 # define FAKE_DEFAULT_SIGNAL_HANDLERS
6067 #if !defined(MULTIPLICITY)
6069 struct interpreter {
6075 /* If we have multiple interpreters define a struct
6076 holding variables which must be per-interpreter
6077 If we don't have threads anything that would have
6078 be per-thread is per-interpreter.
6081 /* Set up PERLVAR macros for populating structs */
6082 # define PERLVAR(prefix,var,type) type prefix##var;
6084 /* 'var' is an array of length 'n' */
6085 # define PERLVARA(prefix,var,n,type) type prefix##var[n];
6087 /* initialize 'var' to init' */
6088 # define PERLVARI(prefix,var,type,init) type prefix##var;
6090 /* like PERLVARI, but make 'var' a const */
6091 # define PERLVARIC(prefix,var,type,init) type prefix##var;
6093 struct interpreter {
6094 # include "intrpvar.h"
6097 EXTCONST U16 PL_interp_size
6098 INIT(sizeof(struct interpreter));
6100 # define PERL_INTERPRETER_SIZE_UPTO_MEMBER(member) \
6101 STRUCT_OFFSET(struct interpreter, member) + \
6102 sizeof(((struct interpreter*)0)->member)
6104 /* This will be useful for subsequent releases, because this has to be the
6105 same in your libperl as in main(), else you have a mismatch and must abort.
6107 EXTCONST U16 PL_interp_size_5_18_0
6108 INIT(PERL_INTERPRETER_SIZE_UPTO_MEMBER(PERL_LAST_5_18_0_INTERP_MEMBER));
6111 /* Done with PERLVAR macros for now ... */
6117 #endif /* MULTIPLICITY */
6119 struct tempsym; /* defined in pp_pack.c */
6126 #define PERL_CKDEF(s) PERL_CALLCONV OP *s (pTHX_ OP *o);
6127 #define PERL_PPDEF(s) PERL_CALLCONV OP *s (pTHX);
6130 # include "malloc_ctl.h"
6134 * This provides a layer of functions and macros to ensure extensions will
6135 * get to use the same RTL functions as the core.
6138 # include "win32iop.h"
6144 /* this has structure inits, so it cannot be included before here */
6147 /* The following must follow proto.h as #defines mess up syntax */
6149 #if !defined(PERL_FOR_X2P)
6150 # include "embedvar.h"
6153 /* Now include all the 'global' variables
6154 * If we don't have threads or multiple interpreters
6155 * these include variables that would have been their struct-s
6158 #define PERLVAR(prefix,var,type) EXT type PL_##var;
6159 #define PERLVARA(prefix,var,n,type) EXT type PL_##var[n];
6160 #define PERLVARI(prefix,var,type,init) EXT type PL_##var INIT(init);
6161 #define PERLVARIC(prefix,var,type,init) EXTCONST type PL_##var INIT(init);
6163 #if !defined(MULTIPLICITY)
6165 # include "intrpvar.h"
6167 # define PL_sv_yes (PL_sv_immortals[0])
6168 # define PL_sv_undef (PL_sv_immortals[1])
6169 # define PL_sv_no (PL_sv_immortals[2])
6170 # define PL_sv_zero (PL_sv_immortals[3])
6174 /* All core uses now exterminated. Ensure no zombies can return: */
6178 /* Now all the config stuff is setup we can include embed.h
6179 In particular, need the relevant *ish file included already, as it may
6180 define HAVE_INTERP_INTERN */
6185 # include "perlvars.h"
6194 #if !defined(MULTIPLICITY)
6195 /* Set up PERLVAR macros for populating structs */
6196 # define PERLVAR(prefix,var,type) type prefix##var;
6197 /* 'var' is an array of length 'n' */
6198 # define PERLVARA(prefix,var,n,type) type prefix##var[n];
6199 /* initialize 'var' to init' */
6200 # define PERLVARI(prefix,var,type,init) type prefix##var;
6201 /* like PERLVARI, but make 'var' a const */
6202 # define PERLVARIC(prefix,var,type,init) type prefix##var;
6204 /* this is never instantiated, is it just used for sizeof(struct PerlHandShakeInterpreter) */
6205 struct PerlHandShakeInterpreter {
6206 # include "intrpvar.h"
6216 /* dummy variables that hold pointers to both runops functions, thus forcing
6217 * them *both* to get linked in (useful for Peek.xs, debugging etc) */
6219 EXTCONST runops_proc_t PL_runops_std
6220 INIT(Perl_runops_standard);
6221 EXTCONST runops_proc_t PL_runops_dbg
6222 INIT(Perl_runops_debug);
6224 #define EXT_MGVTBL EXTCONST MGVTBL
6226 #define PERL_MAGIC_READONLY_ACCEPTABLE 0x40
6227 #define PERL_MAGIC_VALUE_MAGIC 0x80
6228 #define PERL_MAGIC_VTABLE_MASK 0x3F
6230 /* can this type of magic be attached to a readonly SV? */
6231 #define PERL_MAGIC_TYPE_READONLY_ACCEPTABLE(t) \
6232 (PL_magic_data[(U8)(t)] & PERL_MAGIC_READONLY_ACCEPTABLE)
6234 /* Is this type of magic container magic (%ENV, $1 etc),
6235 * or value magic (pos, taint etc)?
6237 #define PERL_MAGIC_TYPE_IS_VALUE_MAGIC(t) \
6238 (PL_magic_data[(U8)(t)] & PERL_MAGIC_VALUE_MAGIC)
6240 #include "mg_vtable.h"
6243 EXTCONST U8 PL_magic_data[256] =
6244 # include "mg_data.h"
6247 EXTCONST U8 PL_magic_data[256];
6251 /* NL IV NV PV INV PI PN MG RX GV LV AV HV CV FM IO OBJ */
6253 PL_valid_types_IVX[] = { 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0 };
6255 PL_valid_types_NVX[] = { 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0 };
6257 PL_valid_types_PVX[] = { 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0 };
6259 PL_valid_types_RV[] = { 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0 };
6261 PL_valid_types_IV_set[] = { 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0 };
6263 PL_valid_types_NV_set[] = { 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0 };
6266 PL_deBruijn_bitpos_tab32[] = {
6267 /* https://graphics.stanford.edu/~seander/bithacks.html#IntegerLogDeBruijn */
6268 0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8,
6269 31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9
6273 PL_deBruijn_bitpos_tab64[] = {
6274 /* https://stackoverflow.com/questions/11376288/fast-computing-of-log2-for-64-bit-integers */
6275 63, 0, 58, 1, 59, 47, 53, 2, 60, 39, 48, 27, 54, 33, 42, 3,
6276 61, 51, 37, 40, 49, 18, 28, 20, 55, 30, 34, 11, 43, 14, 22, 4,
6277 62, 57, 46, 52, 38, 26, 32, 41, 50, 36, 17, 19, 29, 10, 13, 21,
6278 56, 45, 25, 31, 35, 16, 9, 12, 44, 24, 15, 8, 23, 7, 6, 5
6283 EXTCONST bool PL_valid_types_IVX[];
6284 EXTCONST bool PL_valid_types_NVX[];
6285 EXTCONST bool PL_valid_types_PVX[];
6286 EXTCONST bool PL_valid_types_RV[];
6287 EXTCONST bool PL_valid_types_IV_set[];
6288 EXTCONST bool PL_valid_types_NV_set[];
6289 EXTCONST U8 PL_deBruijn_bitpos_tab32[];
6290 EXTCONST U8 PL_deBruijn_bitpos_tab64[];
6294 /* The constants for using PL_deBruijn_bitpos_tab */
6295 #define PERL_deBruijnMagic32_ 0x077CB531
6296 #define PERL_deBruijnShift32_ 27
6297 #define PERL_deBruijnMagic64_ 0x07EDD5E59A4E28C2
6298 #define PERL_deBruijnShift64_ 58
6300 /* In C99 we could use designated (named field) union initializers.
6301 * In C89 we need to initialize the member declared first.
6302 * In C++ we need extern C initializers.
6304 * With the U8_NV version you will want to have inner braces,
6305 * while with the NV_U8 use just the NV. */
6307 #define INFNAN_U8_NV_DECL EXTCONST union { U8 u8[NVSIZE]; NV nv; }
6308 #define INFNAN_NV_U8_DECL EXTCONST union { NV nv; U8 u8[NVSIZE]; }
6310 /* if these never got defined, they need defaults */
6311 #ifndef PERL_SET_CONTEXT
6312 # define PERL_SET_CONTEXT(i) PERL_SET_INTERP(i)
6315 #ifdef USE_PERL_SWITCH_LOCALE_CONTEXT
6316 # define PERL_SET_LOCALE_CONTEXT(i) \
6318 if (UNLIKELY(PL_veto_switch_non_tTHX_context)) \
6319 Perl_switch_locale_context(); \
6322 # define PERL_SET_LOCALE_CONTEXT(i) NOOP
6325 /* In some Configurations there may be per-thread information that is carried
6326 * in a library instead of perl's tTHX structure. This macro is to be used to
6327 * handle those when tTHX is changed. Only locale handling is currently known
6328 * to be affected. */
6329 #define PERL_SET_NON_tTHX_CONTEXT(i) \
6330 STMT_START { PERL_SET_LOCALE_CONTEXT(i); } STMT_END
6333 #ifndef PERL_GET_CONTEXT
6334 # define PERL_GET_CONTEXT PERL_GET_INTERP
6337 #ifndef PERL_GET_THX
6338 # define PERL_GET_THX ((void*)NULL)
6341 #ifndef PERL_SET_THX
6342 # define PERL_SET_THX(t) NOOP
6347 /* The tables below are adapted from
6348 * https://bjoern.hoehrmann.de/utf-8/decoder/dfa/, which requires this copyright
6351 Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>
6353 Permission is hereby granted, free of charge, to any person obtaining a copy of
6354 this software and associated documentation files (the "Software"), to deal in
6355 the Software without restriction, including without limitation the rights to
6356 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
6357 of the Software, and to permit persons to whom the Software is furnished to do
6358 so, subject to the following conditions:
6360 The above copyright notice and this permission notice shall be included in all
6361 copies or substantial portions of the Software.
6363 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
6364 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
6365 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
6366 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
6367 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
6368 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
6374 # if 0 /* This is the original table given in
6375 https://bjoern.hoehrmann.de/utf-8/decoder/dfa/ */
6376 static U8 utf8d_C9[] = {
6377 /* The first part of the table maps bytes to character classes that
6378 * to reduce the size of the transition table and create bitmasks. */
6379 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /*-1F*/
6380 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /*-3F*/
6381 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /*-5F*/
6382 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /*-7F*/
6383 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, /*-9F*/
6384 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, /*-BF*/
6385 8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, /*-DF*/
6386 10,3,3,3,3,3,3,3,3,3,3,3,3,4,3,3, 11,6,6,6,5,8,8,8,8,8,8,8,8,8,8,8, /*-FF*/
6388 /* The second part is a transition table that maps a combination
6389 * of a state of the automaton and a character class to a state. */
6390 0,12,24,36,60,96,84,12,12,12,48,72, 12,12,12,12,12,12,12,12,12,12,12,12,
6391 12, 0,12,12,12,12,12, 0,12, 0,12,12, 12,24,12,12,12,12,12,24,12,24,12,12,
6392 12,12,12,12,12,12,12,24,12,12,12,12, 12,24,12,12,12,12,12,12,12,24,12,12,
6393 12,12,12,12,12,12,12,36,12,36,12,12, 12,36,12,12,12,12,12,36,12,36,12,12,
6394 12,36,12,12,12,12,12,12,12,12,12,12
6399 /* This is a version of the above table customized for Perl that doesn't
6400 * exclude surrogates and accepts start bytes up through FD (FE on 64-bit
6401 * machines). The classes have been renumbered so that the patterns are more
6402 * evident in the table. The class numbers are structured so the values are:
6404 * a) UTF-8 invariant code points
6406 * b) Start bytes that always lead to either overlongs or some class of code
6407 * point that needs outside intervention for handling (such as to raise a
6410 * c) Start bytes that never lead to one of the above
6411 * number of bytes in complete sequence
6412 * d) Rest of start bytes (they can be resolved through this algorithm) and
6413 * continuation bytes
6414 * arbitrary class number chosen to not conflict with the above
6415 * classes, and to index into the remaining table
6417 * It would make the code simpler if start byte FF could also be handled, but
6418 * doing so would mean adding two more classes (one from splitting 80 from 81,
6419 * and one for FF), and nodes for each of 6 new continuation bytes. The
6420 * current table has 436 entries; the new one would require 140 more = 576 (2
6421 * additional classes for each of the 10 existing nodes, and 20 for each of 6
6422 * new nodes. The array would have to be made U16 instead of U8, not worth it
6423 * for this rarely encountered case
6426 * 00-7F 0 Always legal, single byte sequence
6427 * 80-81 7 Not legal immediately after start bytes E0 F0 F8 FC
6429 * 82-83 8 Not legal immediately after start bytes E0 F0 F8 FC
6430 * 84-87 9 Not legal immediately after start bytes E0 F0 F8
6431 * 88-8F 10 Not legal immediately after start bytes E0 F0
6432 * 90-9F 11 Not legal immediately after start byte E0
6433 * A0-BF 12 Always legal continuation byte
6434 * C0,C1 1 Not legal: overlong
6435 * C2-DF 2 Legal start byte for two byte sequences
6436 * E0 13 Some sequences are overlong; others legal
6437 * E1-EF 3 Legal start byte for three byte sequences
6438 * F0 14 Some sequences are overlong; others legal
6439 * F1-F7 4 Legal start byte for four byte sequences
6440 * F8 15 Some sequences are overlong; others legal
6441 * F9-FB 5 Legal start byte for five byte sequences
6442 * FC 16 Some sequences are overlong; others legal
6443 * FD 6 Legal start byte for six byte sequences
6444 * FE 17 Some sequences are overlong; others legal
6445 * (is 1 on 32-bit machines, since it overflows)
6446 * FF 1 Need to handle specially
6449 EXTCONST U8 PL_extended_utf8_dfa_tab[] = {
6450 /* The first part of the table maps bytes to character classes to reduce
6451 * the size of the transition table and create bitmasks. */
6452 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*00-0F*/
6453 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*10-1F*/
6454 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*20-2F*/
6455 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*30-3F*/
6456 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*40-4F*/
6457 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*50-5F*/
6458 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*60-6F*/
6459 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*70-7F*/
6460 7, 7, 8, 8, 9, 9, 9, 9,10,10,10,10,10,10,10,10, /*80-8F*/
6461 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11, /*90-9F*/
6462 12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12, /*A0-AF*/
6463 12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12, /*B0-BF*/
6464 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*C0-CF*/
6465 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*D0-DF*/
6466 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /*E0-EF*/
6467 14, 4, 4, 4, 4, 4, 4, 4,15, 5, 5, 5,16, 6, /*F0-FD*/
6475 /* The second part is a transition table that maps a combination
6476 * of a state of the automaton and a character class to a new state, called a
6477 * node. The nodes are:
6478 * N0 The initial state, and final accepting one.
6479 * N1 Any one continuation byte (80-BF) left. This is transitioned to
6480 * immediately when the start byte indicates a two-byte sequence
6481 * N2 Any two continuation bytes left.
6482 * N3 Any three continuation bytes left.
6483 * N4 Any four continuation bytes left.
6484 * N5 Any five continuation bytes left.
6485 * N6 Start byte is E0. Continuation bytes 80-9F are illegal (overlong);
6486 * the other continuations transition to N1
6487 * N7 Start byte is F0. Continuation bytes 80-8F are illegal (overlong);
6488 * the other continuations transition to N2
6489 * N8 Start byte is F8. Continuation bytes 80-87 are illegal (overlong);
6490 * the other continuations transition to N3
6491 * N9 Start byte is FC. Continuation bytes 80-83 are illegal (overlong);
6492 * the other continuations transition to N4
6493 * N10 Start byte is FE. Continuation bytes 80-81 are illegal (overlong);
6494 * the other continuations transition to N5
6495 * 1 Reject. All transitions not mentioned above (except the single
6496 * byte ones (as they are always legal)) are to this state.
6499 # if defined(PERL_CORE)
6500 # define NUM_CLASSES 18
6502 # define N1 ((N0) + NUM_CLASSES)
6503 # define N2 ((N1) + NUM_CLASSES)
6504 # define N3 ((N2) + NUM_CLASSES)
6505 # define N4 ((N3) + NUM_CLASSES)
6506 # define N5 ((N4) + NUM_CLASSES)
6507 # define N6 ((N5) + NUM_CLASSES)
6508 # define N7 ((N6) + NUM_CLASSES)
6509 # define N8 ((N7) + NUM_CLASSES)
6510 # define N9 ((N8) + NUM_CLASSES)
6511 # define N10 ((N9) + NUM_CLASSES)
6513 /*Class: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 */
6514 /*N0*/ 0, 1,N1,N2,N3,N4,N5, 1, 1, 1, 1, 1, 1,N6,N7,N8,N9,N10,
6515 /*N1*/ 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
6516 /*N2*/ 1, 1, 1, 1, 1, 1, 1,N1,N1,N1,N1,N1,N1, 1, 1, 1, 1, 1,
6517 /*N3*/ 1, 1, 1, 1, 1, 1, 1,N2,N2,N2,N2,N2,N2, 1, 1, 1, 1, 1,
6518 /*N4*/ 1, 1, 1, 1, 1, 1, 1,N3,N3,N3,N3,N3,N3, 1, 1, 1, 1, 1,
6519 /*N5*/ 1, 1, 1, 1, 1, 1, 1,N4,N4,N4,N4,N4,N4, 1, 1, 1, 1, 1,
6521 /*N6*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,N1, 1, 1, 1, 1, 1,
6522 /*N7*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,N2,N2, 1, 1, 1, 1, 1,
6523 /*N8*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,N3,N3,N3, 1, 1, 1, 1, 1,
6524 /*N9*/ 1, 1, 1, 1, 1, 1, 1, 1, 1,N4,N4,N4,N4, 1, 1, 1, 1, 1,
6525 /*N10*/ 1, 1, 1, 1, 1, 1, 1, 1,N5,N5,N5,N5,N5, 1, 1, 1, 1, 1,
6528 /* And below is a version of the above table that accepts only strict UTF-8.
6529 * Hence no surrogates nor non-characters, nor non-Unicode. Thus, if the input
6530 * passes this dfa, it will be for a well-formed, non-problematic code point
6531 * that can be returned immediately.
6533 * The "Implementation details" portion of
6534 * https://bjoern.hoehrmann.de/utf-8/decoder/dfa/ shows how
6535 * the first portion of the table maps each possible byte into a character
6536 * class. And that the classes for those bytes which are start bytes have been
6537 * carefully chosen so they serve as well to be used as a shift value to mask
6538 * off the leading 1 bits of the start byte. Unfortunately the addition of
6539 * being able to distinguish non-characters makes this not fully work. This is
6540 * because, now, the start bytes E1-EF have to be broken into 3 classes instead
6542 * 1) ED because it could be a surrogate
6543 * 2) EF because it could be a non-character
6544 * 3) the rest, which can never evaluate to a problematic code point.
6546 * Each of E1-EF has three leading 1 bits, then a 0. That means we could use a
6547 * shift (and hence class number) of either 3 or 4 to get a mask that works.
6548 * But that only allows two categories, and we need three. khw made the
6549 * decision to therefore treat the ED start byte as an error, so that the dfa
6550 * drops out immediately for that. In the dfa, classes 3 and 4 are used to
6551 * distinguish EF vs the rest. Then special code is used to deal with ED,
6552 * that's executed only when the dfa drops out. The code points started by ED
6553 * are half surrogates, and half hangul syllables. This means that 2048 of
6554 * the hangul syllables (about 18%) take longer than all other non-problematic
6555 * code points to handle.
6557 * The changes to handle non-characters requires the addition of states and
6558 * classes to the dfa. (See the section on "Mapping bytes to character
6559 * classes" in the linked-to document for further explanation of the original
6583 * F1-F3 6 (6 bits can be stripped)
6584 * F4 5 (only 5 can be stripped)
6588 EXTCONST U8 PL_strict_utf8_dfa_tab[] = {
6589 /* The first part of the table maps bytes to character classes to reduce
6590 * the size of the transition table and create bitmasks. */
6591 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*00-0F*/
6592 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*10-1F*/
6593 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*20-2F*/
6594 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*30-3F*/
6595 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*40-4F*/
6596 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*50-5F*/
6597 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*60-6F*/
6598 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*70-7F*/
6599 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,10, /*80-8F*/
6600 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,12, /*90-9F*/
6601 13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,14, /*A0-AF*/
6602 15,15,15,15,15,15,15,16,15,15,15,15,15,15,17,18, /*B0-BF*/
6603 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*C0-CF*/
6604 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*D0-DF*/
6605 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 3, 4, /*E0-EF*/
6606 8, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /*F0-FF*/
6608 /* The second part is a transition table that maps a combination
6609 * of a state of the automaton and a character class to a new state, called a
6610 * node. The nodes are:
6611 * N0 The initial state, and final accepting one.
6612 * N1 Any one continuation byte (80-BF) left. This is transitioned to
6613 * immediately when the start byte indicates a two-byte sequence
6614 * N2 Any two continuation bytes left.
6615 * N3 Start byte is E0. Continuation bytes 80-9F are illegal (overlong);
6616 * the other continuations transition to state N1
6617 * N4 Start byte is EF. Continuation byte B7 transitions to N8; BF to N9;
6618 * the other continuations transitions to N1
6619 * N5 Start byte is F0. Continuation bytes 80-8F are illegal (overlong);
6620 * [9AB]F transition to N10; the other continuations to N2.
6621 * N6 Start byte is F[123]. Continuation bytes [89AB]F transition
6622 * to N10; the other continuations to N2.
6623 * N7 Start byte is F4. Continuation bytes 90-BF are illegal
6624 * (non-unicode); 8F transitions to N10; the other continuations to N2
6625 * N8 Initial sequence is EF B7. Continuation bytes 90-AF are illegal
6626 * (non-characters); the other continuations transition to N0.
6627 * N9 Initial sequence is EF BF. Continuation bytes BE and BF are illegal
6628 * (non-characters); the other continuations transition to N0.
6629 * N10 Initial sequence is one of: F0 [9-B]F; F[123] [8-B]F; or F4 8F.
6630 * Continuation byte BF transitions to N11; the other continuations to
6632 * N11 Initial sequence is the two bytes given in N10 followed by BF.
6633 * Continuation bytes BE and BF are illegal (non-characters); the other
6634 * continuations transition to N0.
6635 * 1 Reject. All transitions not mentioned above (except the single
6636 * byte ones (as they are always legal) are to this state.
6650 # define NUM_CLASSES 19
6652 # define N1 ((N0) + NUM_CLASSES)
6653 # define N2 ((N1) + NUM_CLASSES)
6654 # define N3 ((N2) + NUM_CLASSES)
6655 # define N4 ((N3) + NUM_CLASSES)
6656 # define N5 ((N4) + NUM_CLASSES)
6657 # define N6 ((N5) + NUM_CLASSES)
6658 # define N7 ((N6) + NUM_CLASSES)
6659 # define N8 ((N7) + NUM_CLASSES)
6660 # define N9 ((N8) + NUM_CLASSES)
6661 # define N10 ((N9) + NUM_CLASSES)
6662 # define N11 ((N10) + NUM_CLASSES)
6664 /*Class: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 */
6665 /*N0*/ 0, 1, N1, N2, N4, N7, N6, N3, N5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
6666 /*N1*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
6667 /*N2*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1, N1, N1, N1, N1,
6669 /*N3*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1,
6670 /*N4*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1, N1, N8, N1, N9,
6671 /*N5*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N2,N10, N2,N10, N2, N2, N2,N10,
6672 /*N6*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2,N10, N2,N10, N2,N10, N2, N2, N2,N10,
6673 /*N7*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2,N10, 1, 1, 1, 1, 1, 1, 1, 1,
6674 /*N8*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,
6675 /*N9*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
6676 /*N10*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1, N1, N1, N1,N11,
6677 /*N11*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
6680 /* And below is yet another version of the above tables that accepts only UTF-8
6681 * as defined by Corregidum #9. Hence no surrogates nor non-Unicode, but
6682 * it allows non-characters. This is isomorphic to the original table
6683 * in https://bjoern.hoehrmann.de/utf-8/decoder/dfa/
6697 * F1-F3 6 (6 bits can be stripped)
6698 * F4 5 (only 5 can be stripped)
6702 EXTCONST U8 PL_c9_utf8_dfa_tab[] = {
6703 /* The first part of the table maps bytes to character classes to reduce
6704 * the size of the transition table and create bitmasks. */
6705 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*00-0F*/
6706 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*10-1F*/
6707 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*20-2F*/
6708 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*30-3F*/
6709 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*40-4F*/
6710 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*50-5F*/
6711 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*60-6F*/
6712 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*70-7F*/
6713 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, /*80-8F*/
6714 10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10, /*90-9F*/
6715 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11, /*A0-AF*/
6716 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11, /*B0-BF*/
6717 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*C0-CF*/
6718 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*D0-DF*/
6719 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 3, 3, /*E0-EF*/
6720 8, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /*F0-FF*/
6722 /* The second part is a transition table that maps a combination
6723 * of a state of the automaton and a character class to a new state, called a
6724 * node. The nodes are:
6725 * N0 The initial state, and final accepting one.
6726 * N1 Any one continuation byte (80-BF) left. This is transitioned to
6727 * immediately when the start byte indicates a two-byte sequence
6728 * N2 Any two continuation bytes left.
6729 * N3 Any three continuation bytes left.
6730 * N4 Start byte is E0. Continuation bytes 80-9F are illegal (overlong);
6731 * the other continuations transition to state N1
6732 * N5 Start byte is ED. Continuation bytes A0-BF all lead to surrogates,
6733 * so are illegal. The other continuations transition to state N1.
6734 * N6 Start byte is F0. Continuation bytes 80-8F are illegal (overlong);
6735 * the other continuations transition to N2
6736 * N7 Start byte is F4. Continuation bytes 90-BF are illegal
6737 * (non-unicode); the other continuations transition to N2
6738 * 1 Reject. All transitions not mentioned above (except the single
6739 * byte ones (as they are always legal) are to this state.
6751 # define NUM_CLASSES 12
6753 # define N1 ((N0) + NUM_CLASSES)
6754 # define N2 ((N1) + NUM_CLASSES)
6755 # define N3 ((N2) + NUM_CLASSES)
6756 # define N4 ((N3) + NUM_CLASSES)
6757 # define N5 ((N4) + NUM_CLASSES)
6758 # define N6 ((N5) + NUM_CLASSES)
6759 # define N7 ((N6) + NUM_CLASSES)
6761 /*Class: 0 1 2 3 4 5 6 7 8 9 10 11 */
6762 /*N0*/ 0, 1, N1, N2, N5, N7, N3, N4, N6, 1, 1, 1,
6763 /*N1*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0,
6764 /*N2*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1,
6765 /*N3*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2, N2, N2,
6767 /*N4*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N1,
6768 /*N5*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, 1,
6769 /*N6*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N2, N2,
6770 /*N7*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2, 1, 1,
6773 # endif /* defined(PERL_CORE) */
6774 # else /* End of is DOINIT */
6776 EXTCONST U8 PL_extended_utf8_dfa_tab[];
6777 EXTCONST U8 PL_strict_utf8_dfa_tab[];
6778 EXTCONST U8 PL_c9_utf8_dfa_tab[];
6781 #endif /* end of isn't EBCDIC */
6783 #include "overload.h"
6792 CV* table[NofAMmeth];
6794 struct am_table_short {
6800 typedef struct am_table AMT;
6801 typedef struct am_table_short AMTS;
6803 #define AMGfallNEVER 1
6805 #define AMGfallYES 3
6807 #define AMTf_AMAGIC 1
6808 #define AMT_AMAGIC(amt) ((amt)->flags & AMTf_AMAGIC)
6809 #define AMT_AMAGIC_on(amt) ((amt)->flags |= AMTf_AMAGIC)
6810 #define AMT_AMAGIC_off(amt) ((amt)->flags &= ~AMTf_AMAGIC)
6812 #define StashHANDLER(stash,meth) gv_handler((stash),CAT2(meth,_amg))
6815 * some compilers like to redefine cos et alia as faster
6816 * (and less accurate?) versions called F_cos et cetera (Quidquid
6817 * latine dictum sit, altum viditur.) This trick collides with
6818 * the Perl overloading (amg). The following #defines fool both.
6823 # define F_atan2_amg atan2_amg
6826 # define F_cos_amg cos_amg
6829 # define F_exp_amg exp_amg
6832 # define F_log_amg log_amg
6835 # define F_pow_amg pow_amg
6838 # define F_sin_amg sin_amg
6841 # define F_sqrt_amg sqrt_amg
6843 #endif /* _FASTMATH */
6845 #define PERLDB_ALL (PERLDBf_SUB | PERLDBf_LINE | \
6846 PERLDBf_NOOPT | PERLDBf_INTER | \
6847 PERLDBf_SUBLINE| PERLDBf_SINGLE| \
6848 PERLDBf_NAMEEVAL| PERLDBf_NAMEANON | \
6850 /* No _NONAME, _GOTO */
6851 #define PERLDBf_SUB 0x01 /* Debug sub enter/exit */
6852 #define PERLDBf_LINE 0x02 /* Keep line # */
6853 #define PERLDBf_NOOPT 0x04 /* Switch off optimizations */
6854 #define PERLDBf_INTER 0x08 /* Preserve more data for
6855 later inspections */
6856 #define PERLDBf_SUBLINE 0x10 /* Keep subr source lines */
6857 #define PERLDBf_SINGLE 0x20 /* Start with single-step on */
6858 #define PERLDBf_NONAME 0x40 /* For _SUB: no name of the subr */
6859 #define PERLDBf_GOTO 0x80 /* Report goto: call DB::goto */
6860 #define PERLDBf_NAMEEVAL 0x100 /* Informative names for evals */
6861 #define PERLDBf_NAMEANON 0x200 /* Informative names for anon subs */
6862 #define PERLDBf_SAVESRC 0x400 /* Save source lines into @{"_<$filename"} */
6863 #define PERLDBf_SAVESRC_NOSUBS 0x800 /* Including evals that generate no subroutines */
6864 #define PERLDBf_SAVESRC_INVALID 0x1000 /* Save source that did not compile */
6866 #define PERLDB_SUB (PL_perldb & PERLDBf_SUB)
6867 #define PERLDB_LINE (PL_perldb & PERLDBf_LINE)
6868 #define PERLDB_NOOPT (PL_perldb & PERLDBf_NOOPT)
6869 #define PERLDB_INTER (PL_perldb & PERLDBf_INTER)
6870 #define PERLDB_SUBLINE (PL_perldb & PERLDBf_SUBLINE)
6871 #define PERLDB_SINGLE (PL_perldb & PERLDBf_SINGLE)
6872 #define PERLDB_SUB_NN (PL_perldb & PERLDBf_NONAME)
6873 #define PERLDB_GOTO (PL_perldb & PERLDBf_GOTO)
6874 #define PERLDB_NAMEEVAL (PL_perldb & PERLDBf_NAMEEVAL)
6875 #define PERLDB_NAMEANON (PL_perldb & PERLDBf_NAMEANON)
6876 #define PERLDB_SAVESRC (PL_perldb & PERLDBf_SAVESRC)
6877 #define PERLDB_SAVESRC_NOSUBS (PL_perldb & PERLDBf_SAVESRC_NOSUBS)
6878 #define PERLDB_SAVESRC_INVALID (PL_perldb & PERLDBf_SAVESRC_INVALID)
6880 #define PERLDB_LINE_OR_SAVESRC (PL_perldb & (PERLDBf_LINE | PERLDBf_SAVESRC))
6883 # define KEYWORD_PLUGIN_MUTEX_INIT MUTEX_INIT(&PL_keyword_plugin_mutex)
6884 # define KEYWORD_PLUGIN_MUTEX_LOCK MUTEX_LOCK(&PL_keyword_plugin_mutex)
6885 # define KEYWORD_PLUGIN_MUTEX_UNLOCK MUTEX_UNLOCK(&PL_keyword_plugin_mutex)
6886 # define KEYWORD_PLUGIN_MUTEX_TERM MUTEX_DESTROY(&PL_keyword_plugin_mutex)
6887 # define USER_PROP_MUTEX_INIT MUTEX_INIT(&PL_user_prop_mutex)
6888 # define USER_PROP_MUTEX_LOCK MUTEX_LOCK(&PL_user_prop_mutex)
6889 # define USER_PROP_MUTEX_UNLOCK MUTEX_UNLOCK(&PL_user_prop_mutex)
6890 # define USER_PROP_MUTEX_TERM MUTEX_DESTROY(&PL_user_prop_mutex)
6892 # define KEYWORD_PLUGIN_MUTEX_INIT NOOP
6893 # define KEYWORD_PLUGIN_MUTEX_LOCK NOOP
6894 # define KEYWORD_PLUGIN_MUTEX_UNLOCK NOOP
6895 # define KEYWORD_PLUGIN_MUTEX_TERM NOOP
6896 # define USER_PROP_MUTEX_INIT NOOP
6897 # define USER_PROP_MUTEX_LOCK NOOP
6898 # define USER_PROP_MUTEX_UNLOCK NOOP
6899 # define USER_PROP_MUTEX_TERM NOOP
6902 #ifdef USE_LOCALE /* These locale things are all subject to change */
6904 /* Returns TRUE if the plain locale pragma without a parameter is in effect.
6906 # define IN_LOCALE_RUNTIME (PL_curcop \
6907 && CopHINTS_get(PL_curcop) & HINT_LOCALE)
6909 /* Returns TRUE if either form of the locale pragma is in effect */
6910 # define IN_SOME_LOCALE_FORM_RUNTIME \
6911 cBOOL(CopHINTS_get(PL_curcop) & (HINT_LOCALE|HINT_LOCALE_PARTIAL))
6913 # define IN_LOCALE_COMPILETIME cBOOL(PL_hints & HINT_LOCALE)
6914 # define IN_SOME_LOCALE_FORM_COMPILETIME \
6915 cBOOL(PL_hints & (HINT_LOCALE|HINT_LOCALE_PARTIAL))
6918 =for apidoc_section $locale
6920 =for apidoc Amn|bool|IN_LOCALE
6922 Evaluates to TRUE if the plain locale pragma without a parameter (S<C<use
6923 locale>>) is in effect.
6925 =for apidoc Amn|bool|IN_LOCALE_COMPILETIME
6927 Evaluates to TRUE if, when compiling a perl program (including an C<eval>) if
6928 the plain locale pragma without a parameter (S<C<use locale>>) is in effect.
6930 =for apidoc Amn|bool|IN_LOCALE_RUNTIME
6932 Evaluates to TRUE if, when executing a perl program (including an C<eval>) if
6933 the plain locale pragma without a parameter (S<C<use locale>>) is in effect.
6938 # define IN_LOCALE \
6939 (IN_PERL_COMPILETIME ? IN_LOCALE_COMPILETIME : IN_LOCALE_RUNTIME)
6940 # define IN_SOME_LOCALE_FORM \
6941 (IN_PERL_COMPILETIME ? IN_SOME_LOCALE_FORM_COMPILETIME \
6942 : IN_SOME_LOCALE_FORM_RUNTIME)
6944 # define IN_LC_ALL_COMPILETIME IN_LOCALE_COMPILETIME
6945 # define IN_LC_ALL_RUNTIME IN_LOCALE_RUNTIME
6947 # define IN_LC_PARTIAL_COMPILETIME cBOOL(PL_hints & HINT_LOCALE_PARTIAL)
6948 # define IN_LC_PARTIAL_RUNTIME \
6949 (PL_curcop && CopHINTS_get(PL_curcop) & HINT_LOCALE_PARTIAL)
6951 # define IN_LC_COMPILETIME(category) \
6952 ( IN_LC_ALL_COMPILETIME \
6953 || ( IN_LC_PARTIAL_COMPILETIME \
6954 && Perl__is_in_locale_category(aTHX_ TRUE, (category))))
6955 # define IN_LC_RUNTIME(category) \
6956 (IN_LC_ALL_RUNTIME || (IN_LC_PARTIAL_RUNTIME \
6957 && Perl__is_in_locale_category(aTHX_ FALSE, (category))))
6958 # define IN_LC(category) \
6959 (IN_LC_COMPILETIME(category) || IN_LC_RUNTIME(category))
6961 # if defined (PERL_CORE) || defined (PERL_IN_XSUB_RE)
6963 /* This internal macro should be called from places that operate under
6964 * locale rules. If there is a problem with the current locale that
6965 * hasn't been raised yet, it will output a warning this time. Because
6966 * this will so rarely be true, there is no point to optimize for time;
6967 * instead it makes sense to minimize space used and do all the work in
6968 * the rarely called function */
6969 # ifdef USE_LOCALE_CTYPE
6970 # define CHECK_AND_WARN_PROBLEMATIC_LOCALE_ \
6972 if (UNLIKELY(PL_warn_locale)) { \
6973 Perl_warn_problematic_locale(); \
6977 # define CHECK_AND_WARN_PROBLEMATIC_LOCALE_
6981 /* These two internal macros are called when a warning should be raised,
6982 * and will do so if enabled. The first takes a single code point
6983 * argument; the 2nd, is a pointer to the first byte of the UTF-8 encoded
6984 * string, and an end position which it won't try to read past */
6985 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_CP_MSG(cp) \
6987 if (! IN_UTF8_CTYPE_LOCALE && ckWARN(WARN_LOCALE)) { \
6988 Perl_warner(aTHX_ packWARN(WARN_LOCALE), \
6989 "Wide character (U+%" UVXf ") in %s",\
6990 (UV) cp, OP_DESC(PL_op)); \
6994 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(s, send) \
6995 STMT_START { /* Check if to warn before doing the conversion work */\
6996 if (! IN_UTF8_CTYPE_LOCALE && ckWARN(WARN_LOCALE)) { \
6997 UV cp = utf8_to_uvchr_buf((U8 *) (s), (U8 *) (send), NULL); \
6998 Perl_warner(aTHX_ packWARN(WARN_LOCALE), \
6999 "Wide character (U+%" UVXf ") in %s", \
7001 ? UNICODE_REPLACEMENT \
7007 # endif /* PERL_CORE or PERL_IN_XSUB_RE */
7008 #else /* No locale usage */
7009 # define IN_LOCALE_RUNTIME 0
7010 # define IN_SOME_LOCALE_FORM_RUNTIME 0
7011 # define IN_LOCALE_COMPILETIME 0
7012 # define IN_SOME_LOCALE_FORM_COMPILETIME 0
7013 # define IN_LOCALE 0
7014 # define IN_SOME_LOCALE_FORM 0
7015 # define IN_LC_ALL_COMPILETIME 0
7016 # define IN_LC_ALL_RUNTIME 0
7017 # define IN_LC_PARTIAL_COMPILETIME 0
7018 # define IN_LC_PARTIAL_RUNTIME 0
7019 # define IN_LC_COMPILETIME(category) 0
7020 # define IN_LC_RUNTIME(category) 0
7021 # define IN_LC(category) 0
7022 # define CHECK_AND_WARN_PROBLEMATIC_LOCALE_
7023 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(s, send)
7024 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_CP_MSG(c)
7027 #define locale_panic_via_(m, f, l) Perl_locale_panic((m), __LINE__, f, l)
7028 #define locale_panic_(m) locale_panic_via_((m), __FILE__, __LINE__)
7030 /* Locale/thread synchronization macros. */
7031 #if ! defined(USE_LOCALE_THREADS)
7032 # define LOCALE_LOCK_(cond) NOOP
7033 # define LOCALE_UNLOCK_ NOOP
7034 # define LOCALE_INIT
7035 # define LOCALE_TERM
7037 #else /* Below: Threaded, and locales are supported */
7039 /* A locale mutex is required on all such threaded builds.
7041 * This mutex simulates a general (or recursive) semaphore. The current
7042 * thread will lock the mutex if the per-thread variable is zero, and then
7043 * increments that variable. Each corresponding UNLOCK decrements the
7044 * variable until it is 0, at which point it actually unlocks the mutex.
7045 * Since the variable is per-thread, initialized to 0, there is no race
7046 * with other threads.
7048 * The single argument is a condition to test for, and if true, to panic.
7049 * Call it with the constant 0 to suppress the check.
7051 * Clang improperly gives warnings for this, if not silenced:
7052 * https://clang.llvm.org/docs/ThreadSafetyAnalysis.html#conditional-locks
7054 # define LOCALE_LOCK_(cond_to_panic_if_already_locked) \
7056 CLANG_DIAG_IGNORE(-Wthread-safety) \
7057 if (LIKELY(PL_locale_mutex_depth <= 0)) { \
7058 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7059 "%s: %d: locking locale; depth=1\n", \
7060 __FILE__, __LINE__)); \
7061 MUTEX_LOCK(&PL_locale_mutex); \
7062 PL_locale_mutex_depth = 1; \
7063 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7064 "%s: %d: locale locked; depth=1\n", \
7065 __FILE__, __LINE__)); \
7068 PL_locale_mutex_depth++; \
7069 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7070 "%s: %d: avoided locking locale; new depth=%d\n", \
7071 __FILE__, __LINE__, PL_locale_mutex_depth)); \
7072 if (cond_to_panic_if_already_locked) { \
7073 locale_panic_("Trying to lock locale incompatibly: " \
7074 STRINGIFY(cond_to_panic_if_already_locked)); \
7077 CLANG_DIAG_RESTORE \
7080 # define LOCALE_UNLOCK_ \
7082 if (LIKELY(PL_locale_mutex_depth == 1)) { \
7083 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7084 "%s: %d: unlocking locale; new depth=0\n", \
7085 __FILE__, __LINE__)); \
7086 PL_locale_mutex_depth = 0; \
7087 MUTEX_UNLOCK(&PL_locale_mutex); \
7089 else if (PL_locale_mutex_depth <= 0) { \
7090 DEBUG_L(PerlIO_printf(Perl_debug_log, \
7091 "%s: %d: ignored attempt to unlock already" \
7092 " unlocked locale; depth unchanged at %d\n", \
7093 __FILE__, __LINE__, PL_locale_mutex_depth)); \
7096 PL_locale_mutex_depth--; \
7097 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7098 "%s: %d: avoided unlocking locale; new depth=%d\n", \
7099 __FILE__, __LINE__, PL_locale_mutex_depth)); \
7103 # if defined(USE_THREADS) && ! defined(USE_THREAD_SAFE_LOCALE)
7105 /* By definition, a thread-unsafe locale means we need a critical
7107 # define LOCALE_LOCK LOCALE_LOCK_(0)
7108 # define LOCALE_UNLOCK LOCALE_UNLOCK_
7109 # ifdef USE_LOCALE_NUMERIC
7110 # define LC_NUMERIC_LOCK(cond_to_panic_if_already_locked) \
7111 LOCALE_LOCK_(cond_to_panic_if_already_locked)
7112 # define LC_NUMERIC_UNLOCK LOCALE_UNLOCK_
7116 # ifdef WIN32_USE_FAKE_OLD_MINGW_LOCALES
7117 /* This function is coerced by this Configure option into cleaning up
7118 * memory that is static to locale.c. So we call it at termination. Doing
7119 * it this way is kludgy but confines having to deal with this
7120 * Configuration to a bare minimum number of places. */
7121 # define LOCALE_TERM_POSIX_2008_ Perl_thread_locale_term(NULL)
7122 # elif ! defined(USE_POSIX_2008_LOCALE)
7123 # define LOCALE_TERM_POSIX_2008_ NOOP
7125 /* We have a locale object holding the 'C' locale for Posix 2008 */
7126 # define LOCALE_TERM_POSIX_2008_ \
7128 if (PL_C_locale_obj) { \
7129 /* Make sure we aren't using the locale \
7130 * space we are about to free */ \
7131 uselocale(LC_GLOBAL_LOCALE); \
7132 freelocale(PL_C_locale_obj); \
7133 PL_C_locale_obj = (locale_t) NULL; \
7138 # define LOCALE_INIT MUTEX_INIT(&PL_locale_mutex)
7139 # define LOCALE_TERM STMT_START { \
7140 LOCALE_TERM_POSIX_2008_; \
7141 MUTEX_DESTROY(&PL_locale_mutex); \
7145 /* There are some locale-related functions which may need locking only because
7146 * they share some common memory across threads, and hence there is the
7147 * potential for a race in accessing that space. Most are because their return
7148 * points to a global static buffer, but some just use some common space
7149 * internally. All functions accessing a given space need to have a critical
7150 * section to prevent any other thread from accessing it at the same time.
7151 * Ideally, there would be a separate mutex for each such space, so that
7152 * another thread isn't unnecessarily blocked. But, most of them need to be
7153 * locked against the locale changing while accessing that space, and it is not
7154 * expected that any will be called frequently, and the locked interval should
7155 * be short, and modern platforms will have reentrant versions (which don't
7156 * lock) for almost all of them, so khw thinks a single mutex should suffice.
7157 * Having a single mutex facilitates that, avoiding potential deadlock
7160 * This will be a no-op iff the perl is unthreaded. 'gw' stands for 'global
7161 * write', to indicate the caller wants to be able to access memory that isn't
7162 * thread specific, either to write to itself, or to prevent anyone else from
7164 #define gwLOCALE_LOCK LOCALE_LOCK_(0)
7165 #define gwLOCALE_UNLOCK LOCALE_UNLOCK_
7167 /* setlocale() generally returns in a global static buffer, but not on Windows
7168 * when operating in thread-safe mode */
7169 #if defined(WIN32) && defined(USE_THREAD_SAFE_LOCALE)
7170 # define POSIX_SETLOCALE_LOCK \
7172 if (_configthreadlocale(0) == _DISABLE_PER_THREAD_LOCALE) \
7175 # define POSIX_SETLOCALE_UNLOCK \
7177 if (_configthreadlocale(0) == _DISABLE_PER_THREAD_LOCALE) \
7181 # define POSIX_SETLOCALE_LOCK gwLOCALE_LOCK
7182 # define POSIX_SETLOCALE_UNLOCK gwLOCALE_UNLOCK
7185 /* It handles _wsetlocale() as well */
7186 #define WSETLOCALE_LOCK POSIX_SETLOCALE_LOCK
7187 #define WSETLOCALE_UNLOCK POSIX_SETLOCALE_UNLOCK
7189 /* Similar to gwLOCALE_LOCK, there are functions that require both the locale
7190 * and environment to be constant during their execution, and don't change
7191 * either of those things, but do write to some sort of shared global space.
7192 * They require some sort of exclusive lock against similar functions, and a
7193 * read lock on both the locale and environment. However, on systems which
7194 * have per-thread locales, the locale is constant during the execution of
7195 * these functions, and so no locale lock is necssary. For such systems, an
7196 * exclusive ENV lock is necessary and sufficient. On systems where the locale
7197 * could change out from under us, we use an exclusive LOCALE lock to prevent
7198 * that, and a read ENV lock to prevent other threads that have nothing to do
7199 * with locales here from changing the environment. */
7201 # define gwENVr_LOCALEr_LOCK \
7202 STMT_START { LOCALE_LOCK; ENV_READ_LOCK; } STMT_END
7203 # define gwENVr_LOCALEr_UNLOCK \
7204 STMT_START { ENV_READ_UNLOCK; LOCALE_UNLOCK; } STMT_END
7206 # define gwENVr_LOCALEr_LOCK ENV_LOCK
7207 # define gwENVr_LOCALEr_UNLOCK ENV_UNLOCK
7210 /* Now that we have defined gwENVr_LOCALEr_LOCK, we can finish defining
7211 * LOCALE_LOCK, which we kept undefined until here on a thread-safe system
7212 * so that we could use that fact to calculate what gwENVr_LOCALEr_LOCK should
7215 # define LOCALE_LOCK NOOP
7216 # define LOCALE_UNLOCK NOOP
7220 /* On systems that don't have per-thread locales, even though we don't
7221 * think we are changing the locale ourselves, behind the scenes it does
7222 * get changed to whatever the thread's should be, so it has to be an
7223 * exclusive lock. By defining it here with this name, we can, for the
7224 * most part, hide this detail from the rest of the code */
7225 /* Currently, the read lock is an exclusive lock */
7226 #define LOCALE_READ_LOCK LOCALE_LOCK
7227 #define LOCALE_READ_UNLOCK LOCALE_UNLOCK
7230 #ifndef LC_NUMERIC_LOCK
7231 # define LC_NUMERIC_LOCK(cond) NOOP
7232 # define LC_NUMERIC_UNLOCK NOOP
7235 /* These non-reentrant versions use global space */
7236 # define MBLEN_LOCK_ gwLOCALE_LOCK
7237 # define MBLEN_UNLOCK_ gwLOCALE_UNLOCK
7239 # define MBTOWC_LOCK_ gwLOCALE_LOCK
7240 # define MBTOWC_UNLOCK_ gwLOCALE_UNLOCK
7242 # define WCTOMB_LOCK_ gwLOCALE_LOCK
7243 # define WCTOMB_UNLOCK_ gwLOCALE_UNLOCK
7245 /* Whereas the reentrant versions don't (assuming they are called with a
7246 * per-thread buffer; some have the capability of being called with a NULL
7247 * parameter, which defeats the reentrancy) */
7248 # define MBRLEN_LOCK_ NOOP
7249 # define MBRLEN_UNLOCK_ NOOP
7250 # define MBRTOWC_LOCK_ NOOP
7251 # define MBRTOWC_UNLOCK_ NOOP
7252 # define WCRTOMB_LOCK_ NOOP
7253 # define WCRTOMB_UNLOCK_ NOOP
7255 # define LC_COLLATE_LOCK LOCALE_LOCK
7256 # define LC_COLLATE_UNLOCK LOCALE_UNLOCK
7258 # define STRFTIME_LOCK ENV_LOCK
7259 # define STRFTIME_UNLOCK ENV_UNLOCK
7261 #ifdef USE_LOCALE_NUMERIC
7263 /* These macros are for toggling between the underlying locale (UNDERLYING or
7264 * LOCAL) and the C locale (STANDARD). (Actually we don't have to use the C
7265 * locale if the underlying locale is indistinguishable from it in the numeric
7266 * operations used by Perl, namely the decimal point, and even the thousands
7269 =for apidoc_section $locale
7271 =for apidoc Amn|void|DECLARATION_FOR_LC_NUMERIC_MANIPULATION
7273 This macro should be used as a statement. It declares a private variable
7274 (whose name begins with an underscore) that is needed by the other macros in
7275 this section. Failing to include this correctly should lead to a syntax error.
7276 For compatibility with C89 C compilers it should be placed in a block before
7277 any executable statements.
7279 =for apidoc Am|void|STORE_LC_NUMERIC_FORCE_TO_UNDERLYING
7281 This is used by XS code that is C<LC_NUMERIC> locale-aware to force the
7282 locale for category C<LC_NUMERIC> to be what perl thinks is the current
7283 underlying locale. (The perl interpreter could be wrong about what the
7284 underlying locale actually is if some C or XS code has called the C library
7285 function L<setlocale(3)> behind its back; calling L</sync_locale> before calling
7286 this macro will update perl's records.)
7288 A call to L</DECLARATION_FOR_LC_NUMERIC_MANIPULATION> must have been made to
7289 declare at compile time a private variable used by this macro. This macro
7290 should be called as a single statement, not an expression, but with an empty
7291 argument list, like this:
7294 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
7296 STORE_LC_NUMERIC_FORCE_TO_UNDERLYING();
7298 RESTORE_LC_NUMERIC();
7302 The private variable is used to save the current locale state, so
7303 that the requisite matching call to L</RESTORE_LC_NUMERIC> can restore it.
7305 On threaded perls not operating with thread-safe functionality, this macro uses
7306 a mutex to force a critical section. Therefore the matching RESTORE should be
7307 close by, and guaranteed to be called.
7309 =for apidoc Am|void|STORE_LC_NUMERIC_SET_TO_NEEDED
7311 This is used to help wrap XS or C code that is C<LC_NUMERIC> locale-aware.
7312 This locale category is generally kept set to a locale where the decimal radix
7313 character is a dot, and the separator between groups of digits is empty. This
7314 is because most XS code that reads floating point numbers is expecting them to
7317 This macro makes sure the current C<LC_NUMERIC> state is set properly, to be
7318 aware of locale if the call to the XS or C code from the Perl program is
7319 from within the scope of a S<C<use locale>>; or to ignore locale if the call is
7320 instead from outside such scope.
7322 This macro is the start of wrapping the C or XS code; the wrap ending is done
7323 by calling the L</RESTORE_LC_NUMERIC> macro after the operation. Otherwise
7324 the state can be changed that will adversely affect other XS code.
7326 A call to L</DECLARATION_FOR_LC_NUMERIC_MANIPULATION> must have been made to
7327 declare at compile time a private variable used by this macro. This macro
7328 should be called as a single statement, not an expression, but with an empty
7329 argument list, like this:
7332 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
7334 STORE_LC_NUMERIC_SET_TO_NEEDED();
7336 RESTORE_LC_NUMERIC();
7340 On threaded perls not operating with thread-safe functionality, this macro uses
7341 a mutex to force a critical section. Therefore the matching RESTORE should be
7342 close by, and guaranteed to be called; see L</WITH_LC_NUMERIC_SET_TO_NEEDED>
7343 for a more contained way to ensure that.
7345 =for apidoc Am|void|STORE_LC_NUMERIC_SET_TO_NEEDED_IN|bool in_lc_numeric
7347 Same as L</STORE_LC_NUMERIC_SET_TO_NEEDED> with in_lc_numeric provided
7348 as the precalculated value of C<IN_LC(LC_NUMERIC)>. It is the caller's
7349 responsibility to ensure that the status of C<PL_compiling> and C<PL_hints>
7350 cannot have changed since the precalculation.
7352 =for apidoc Am|void|RESTORE_LC_NUMERIC
7354 This is used in conjunction with one of the macros
7355 L</STORE_LC_NUMERIC_SET_TO_NEEDED>
7356 and L</STORE_LC_NUMERIC_FORCE_TO_UNDERLYING> to properly restore the
7357 C<LC_NUMERIC> state.
7359 A call to L</DECLARATION_FOR_LC_NUMERIC_MANIPULATION> must have been made to
7360 declare at compile time a private variable used by this macro and the two
7361 C<STORE> ones. This macro should be called as a single statement, not an
7362 expression, but with an empty argument list, like this:
7365 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
7367 RESTORE_LC_NUMERIC();
7371 =for apidoc Am|void|WITH_LC_NUMERIC_SET_TO_NEEDED|block
7373 This macro invokes the supplied statement or block within the context
7374 of a L</STORE_LC_NUMERIC_SET_TO_NEEDED> .. L</RESTORE_LC_NUMERIC> pair
7377 WITH_LC_NUMERIC_SET_TO_NEEDED(
7378 SNPRINTF_G(fv, ebuf, sizeof(ebuf), precis)
7384 #ifdef USE_LOCALE_NUMERIC
7385 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
7386 STORE_LC_NUMERIC_SET_TO_NEEDED();
7388 SNPRINTF_G(fv, ebuf, sizeof(ebuf), precis);
7389 #ifdef USE_LOCALE_NUMERIC
7390 RESTORE_LC_NUMERIC();
7394 =for apidoc Am|void|WITH_LC_NUMERIC_SET_TO_NEEDED_IN|bool in_lc_numeric|block
7396 Same as L</WITH_LC_NUMERIC_SET_TO_NEEDED> with in_lc_numeric provided
7397 as the precalculated value of C<IN_LC(LC_NUMERIC)>. It is the caller's
7398 responsibility to ensure that the status of C<PL_compiling> and C<PL_hints>
7399 cannot have changed since the precalculation.
7405 /* If the underlying numeric locale has a non-dot decimal point or has a
7406 * non-empty floating point thousands separator, the current locale is instead
7407 * generally kept in the C locale instead of that underlying locale. The
7408 * current status is known by looking at two words. One is non-zero if the
7409 * current numeric locale is the standard C/POSIX one or is indistinguishable
7410 * from C. The other is non-zero if the current locale is the underlying
7411 * locale. Both can be non-zero if, as often happens, the underlying locale is
7412 * C or indistinguishable from it.
7414 * khw believes the reason for the variables instead of the bits in a single
7415 * word is to avoid having to have masking instructions. */
7417 # define NOT_IN_NUMERIC_STANDARD_ (! PL_numeric_standard)
7419 /* We can lock the category to stay in the C locale, making requests to the
7420 * contrary be noops, in the dynamic scope by setting PL_numeric_standard to 2.
7422 # define NOT_IN_NUMERIC_UNDERLYING_ \
7423 (! PL_numeric_underlying && PL_numeric_standard < 2)
7425 # define DECLARATION_FOR_LC_NUMERIC_MANIPULATION \
7426 void (*_restore_LC_NUMERIC_function)(pTHX) = NULL
7428 # define STORE_LC_NUMERIC_SET_TO_NEEDED_IN(in) \
7430 bool _in_lc_numeric = (in); \
7432 ( ( _in_lc_numeric && NOT_IN_NUMERIC_UNDERLYING_) \
7433 || (! _in_lc_numeric && NOT_IN_NUMERIC_STANDARD_))); \
7434 if (_in_lc_numeric) { \
7435 if (NOT_IN_NUMERIC_UNDERLYING_) { \
7436 Perl_set_numeric_underlying(aTHX); \
7437 _restore_LC_NUMERIC_function \
7438 = &Perl_set_numeric_standard; \
7442 if (NOT_IN_NUMERIC_STANDARD_) { \
7443 Perl_set_numeric_standard(aTHX); \
7444 _restore_LC_NUMERIC_function \
7445 = &Perl_set_numeric_underlying; \
7450 # define STORE_LC_NUMERIC_SET_TO_NEEDED() \
7451 STORE_LC_NUMERIC_SET_TO_NEEDED_IN(IN_LC(LC_NUMERIC))
7453 # define RESTORE_LC_NUMERIC() \
7455 if (_restore_LC_NUMERIC_function) { \
7456 _restore_LC_NUMERIC_function(aTHX); \
7458 LC_NUMERIC_UNLOCK; \
7461 /* The next two macros should be rarely used, and only after being sure that
7462 * this is what is needed */
7463 # define SET_NUMERIC_STANDARD() \
7465 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7466 "%s: %d: lc_numeric standard=%d\n", \
7467 __FILE__, __LINE__, PL_numeric_standard)); \
7468 if (UNLIKELY(NOT_IN_NUMERIC_STANDARD_)) { \
7469 Perl_set_numeric_standard(aTHX); \
7471 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7472 "%s: %d: lc_numeric standard=%d\n", \
7473 __FILE__, __LINE__, PL_numeric_standard)); \
7476 # define SET_NUMERIC_UNDERLYING() \
7478 /*assert(PL_locale_mutex_depth > 0);*/ \
7479 if (NOT_IN_NUMERIC_UNDERLYING_) { \
7480 Perl_set_numeric_underlying(aTHX); \
7484 /* The rest of these LC_NUMERIC macros toggle to one or the other state, with
7485 * the RESTORE_foo ones called to switch back, but only if need be */
7486 # define STORE_LC_NUMERIC_SET_STANDARD() \
7488 LC_NUMERIC_LOCK(NOT_IN_NUMERIC_STANDARD_); \
7489 if (NOT_IN_NUMERIC_STANDARD_) { \
7490 _restore_LC_NUMERIC_function = &Perl_set_numeric_underlying;\
7491 Perl_set_numeric_standard(aTHX); \
7495 /* Rarely, we want to change to the underlying locale even outside of 'use
7496 * locale'. This is principally in the POSIX:: functions */
7497 # define STORE_LC_NUMERIC_FORCE_TO_UNDERLYING() \
7499 LC_NUMERIC_LOCK(NOT_IN_NUMERIC_UNDERLYING_); \
7500 if (NOT_IN_NUMERIC_UNDERLYING_) { \
7501 Perl_set_numeric_underlying(aTHX); \
7502 _restore_LC_NUMERIC_function = &Perl_set_numeric_standard; \
7506 /* Lock/unlock changes to LC_NUMERIC. This needs to be recursively callable.
7507 * The highest level caller is responsible for making sure that LC_NUMERIC is
7508 * set to a locale with a dot radix character. These deliberately don't check
7509 * for the internal state being so, as they can be called from code that is not
7510 * party to the internal conventions, namely 'version' (vutil.c).
7511 * PL_numeric_standard changing doesn't affect anything about what locale is in
7512 * effect, etc. [perl #128207] */
7513 # define DISABLE_LC_NUMERIC_CHANGES() \
7515 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7516 "%s: %d: lc_numeric_standard now locked to depth %d\n", \
7517 __FILE__, __LINE__, PL_numeric_standard)); \
7518 PL_numeric_standard++; \
7521 # define REENABLE_LC_NUMERIC_CHANGES() \
7523 if (PL_numeric_standard > 1) { \
7524 PL_numeric_standard--; \
7529 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7530 "%s: %d: ", __FILE__, __LINE__); \
7531 if (PL_numeric_standard <= 1) \
7532 PerlIO_printf(Perl_debug_log, \
7533 "lc_numeric_standard now unlocked\n");\
7534 else PerlIO_printf(Perl_debug_log, \
7535 "lc_numeric_standard lock decremented to depth %d\n", \
7536 PL_numeric_standard););\
7539 /* Essentially synonyms for the above. The LOCK asserts at the top level that
7540 * we are in a locale equivalent to C. By including the top level, this can be
7541 * recursively called from chains which include DISABLE_LC_NUMERIC_CHANGES().
7543 # define LOCK_LC_NUMERIC_STANDARD() \
7545 assert(PL_numeric_standard > 0 || PL_numeric_standard); \
7546 DISABLE_LC_NUMERIC_CHANGES(); \
7548 # define UNLOCK_LC_NUMERIC_STANDARD() REENABLE_LC_NUMERIC_CHANGES()
7550 # define WITH_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric, block) \
7552 DECLARATION_FOR_LC_NUMERIC_MANIPULATION; \
7553 STORE_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric); \
7555 RESTORE_LC_NUMERIC(); \
7558 # define WITH_LC_NUMERIC_SET_TO_NEEDED(block) \
7559 WITH_LC_NUMERIC_SET_TO_NEEDED_IN(IN_LC(LC_NUMERIC), block)
7561 #else /* !USE_LOCALE_NUMERIC */
7563 # define SET_NUMERIC_STANDARD()
7564 # define SET_NUMERIC_UNDERLYING()
7565 # define IS_NUMERIC_RADIX(a, b) (0)
7566 # define DECLARATION_FOR_LC_NUMERIC_MANIPULATION dNOOP
7567 # define STORE_LC_NUMERIC_SET_STANDARD()
7568 # define STORE_LC_NUMERIC_FORCE_TO_UNDERLYING()
7569 # define STORE_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric)
7570 # define STORE_LC_NUMERIC_SET_TO_NEEDED()
7571 # define RESTORE_LC_NUMERIC()
7572 # define LOCK_LC_NUMERIC_STANDARD()
7573 # define UNLOCK_LC_NUMERIC_STANDARD()
7574 # define DISABLE_LC_NUMERIC_CHANGES()
7575 # define REENABLE_LC_NUMERIC_CHANGES()
7576 # define WITH_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric, block) \
7577 STMT_START { block; } STMT_END
7578 # define WITH_LC_NUMERIC_SET_TO_NEEDED(block) \
7579 STMT_START { block; } STMT_END
7581 #endif /* !USE_LOCALE_NUMERIC */
7583 #ifdef USE_LOCALE_THREADS
7584 # define ENV_LOCK PERL_WRITE_LOCK(&PL_env_mutex)
7585 # define ENV_UNLOCK PERL_WRITE_UNLOCK(&PL_env_mutex)
7586 # define ENV_READ_LOCK PERL_READ_LOCK(&PL_env_mutex)
7587 # define ENV_READ_UNLOCK PERL_READ_UNLOCK(&PL_env_mutex)
7588 # define ENV_INIT PERL_RW_MUTEX_INIT(&PL_env_mutex)
7589 # define ENV_TERM PERL_RW_MUTEX_DESTROY(&PL_env_mutex)
7591 /* On platforms where the static buffer contained in getenv() is per-thread
7592 * rather than process-wide, another thread executing a getenv() at the same
7593 * time won't destroy ours before we have copied the result safely away and
7594 * unlocked the mutex. On such platforms (which is most), we can have many
7595 * readers of the environment at the same time. */
7596 # ifdef GETENV_PRESERVES_OTHER_THREAD
7597 # define GETENV_LOCK ENV_READ_LOCK
7598 # define GETENV_UNLOCK ENV_READ_UNLOCK
7600 /* If, on the other hand, another thread could zap our getenv() return, we
7601 * need to keep them from executing until we are done */
7602 # define GETENV_LOCK ENV_LOCK
7603 # define GETENV_UNLOCK ENV_UNLOCK
7606 # define ENV_LOCK NOOP
7607 # define ENV_UNLOCK NOOP
7608 # define ENV_READ_LOCK NOOP
7609 # define ENV_READ_UNLOCK NOOP
7610 # define ENV_INIT NOOP
7611 # define ENV_TERM NOOP
7612 # define GETENV_LOCK NOOP
7613 # define GETENV_UNLOCK NOOP
7616 /* Some critical sections need to lock both the locale and the environment from
7617 * changing, while allowing for any number of readers. To avoid deadlock, this
7618 * is always done in the same order. These should always be invoked, like all
7619 * locks really, at such a low level that its just a libc call that is wrapped,
7620 * so as to prevent recursive calls which could deadlock. */
7621 #define ENVr_LOCALEr_LOCK \
7622 STMT_START { LOCALE_READ_LOCK; ENV_READ_LOCK; } STMT_END
7623 #define ENVr_LOCALEr_UNLOCK \
7624 STMT_START { ENV_READ_UNLOCK; LOCALE_READ_UNLOCK; } STMT_END
7626 /* These time-related functions all requre that the environment and locale
7627 * don't change while they are executing (at least in glibc; this appears to be
7628 * contrary to the POSIX standard). tzset() writes global variables, so
7629 * always needs to have write locking. ctime, localtime, mktime, and strftime
7630 * effectively call it, so they too need exclusive access. The rest need to
7631 * have exclusive locking as well so that they can copy the contents of the
7632 * returned static buffer before releasing the lock. That leaves asctime and
7633 * gmtime. There may be reentrant versions of these available on the platform
7634 * which don't require write locking.
7636 #ifdef PERL_REENTR_USING_ASCTIME_R
7637 # define ASCTIME_LOCK ENVr_LOCALEr_LOCK
7638 # define ASCTIME_UNLOCK ENVr_LOCALEr_UNLOCK
7640 # define ASCTIME_LOCK gwENVr_LOCALEr_LOCK
7641 # define ASCTIME_UNLOCK gwENVr_LOCALEr_UNLOCK
7644 #define CTIME_LOCK gwENVr_LOCALEr_LOCK
7645 #define CTIME_UNLOCK gwENVr_LOCALEr_UNLOCK
7647 #ifdef PERL_REENTR_USING_GMTIME_R
7648 # define GMTIME_LOCK ENVr_LOCALEr_LOCK
7649 # define GMTIME_UNLOCK ENVr_LOCALEr_UNLOCK
7651 # define GMTIME_LOCK gwENVr_LOCALEr_LOCK
7652 # define GMTIME_UNLOCK gwENVr_LOCALEr_UNLOCK
7655 #define LOCALTIME_LOCK gwENVr_LOCALEr_LOCK
7656 #define LOCALTIME_UNLOCK gwENVr_LOCALEr_UNLOCK
7657 #define MKTIME_LOCK gwENVr_LOCALEr_LOCK
7658 #define MKTIME_UNLOCK gwENVr_LOCALEr_UNLOCK
7659 #define TZSET_LOCK gwENVr_LOCALEr_LOCK
7660 #define TZSET_UNLOCK gwENVr_LOCALEr_UNLOCK
7662 /* Similiarly, these functions need a constant environment and/or locale. And
7663 * some have a buffer that is shared with another thread executing the same or
7664 * a related call. A mutex could be created for each class, but for now, share
7665 * the ENV mutex with everything, as none probably gets called so much that
7666 * performance would suffer by a thread being locked out by another thread that
7667 * could have used a different mutex.
7669 * But, create a different macro name just to indicate the ones that don't
7670 * actually depend on the environment, but are using its mutex for want of a
7672 #define gwLOCALEr_LOCK gwENVr_LOCALEr_LOCK
7673 #define gwLOCALEr_UNLOCK gwENVr_LOCALEr_UNLOCK
7675 #ifdef PERL_REENTR_USING_GETHOSTBYADDR_R
7676 # define GETHOSTBYADDR_LOCK ENVr_LOCALEr_LOCK
7677 # define GETHOSTBYADDR_UNLOCK ENVr_LOCALEr_UNLOCK
7679 # define GETHOSTBYADDR_LOCK gwENVr_LOCALEr_LOCK
7680 # define GETHOSTBYADDR_UNLOCK gwENVr_LOCALEr_UNLOCK
7682 #ifdef PERL_REENTR_USING_GETHOSTBYNAME_R
7683 # define GETHOSTBYNAME_LOCK ENVr_LOCALEr_LOCK
7684 # define GETHOSTBYNAME_UNLOCK ENVr_LOCALEr_UNLOCK
7686 # define GETHOSTBYNAME_LOCK gwENVr_LOCALEr_LOCK
7687 # define GETHOSTBYNAME_UNLOCK gwENVr_LOCALEr_UNLOCK
7689 #ifdef PERL_REENTR_USING_GETNETBYADDR_R
7690 # define GETNETBYADDR_LOCK LOCALE_READ_LOCK
7691 # define GETNETBYADDR_UNLOCK LOCALE_READ_UNLOCK
7693 # define GETNETBYADDR_LOCK gwLOCALEr_LOCK
7694 # define GETNETBYADDR_UNLOCK gwLOCALEr_UNLOCK
7696 #ifdef PERL_REENTR_USING_GETNETBYNAME_R
7697 # define GETNETBYNAME_LOCK LOCALE_READ_LOCK
7698 # define GETNETBYNAME_UNLOCK LOCALE_READ_UNLOCK
7700 # define GETNETBYNAME_LOCK gwLOCALEr_LOCK
7701 # define GETNETBYNAME_UNLOCK gwLOCALEr_UNLOCK
7703 #ifdef PERL_REENTR_USING_GETPROTOBYNAME_R
7704 # define GETPROTOBYNAME_LOCK LOCALE_READ_LOCK
7705 # define GETPROTOBYNAME_UNLOCK LOCALE_READ_UNLOCK
7707 # define GETPROTOBYNAME_LOCK gwLOCALEr_LOCK
7708 # define GETPROTOBYNAME_UNLOCK gwLOCALEr_UNLOCK
7710 #ifdef PERL_REENTR_USING_GETPROTOBYNUMBER_R
7711 # define GETPROTOBYNUMBER_LOCK LOCALE_READ_LOCK
7712 # define GETPROTOBYNUMBER_UNLOCK LOCALE_READ_UNLOCK
7714 # define GETPROTOBYNUMBER_LOCK gwLOCALEr_LOCK
7715 # define GETPROTOBYNUMBER_UNLOCK gwLOCALEr_UNLOCK
7717 #ifdef PERL_REENTR_USING_GETPROTOENT_R
7718 # define GETPROTOENT_LOCK LOCALE_READ_LOCK
7719 # define GETPROTOENT_UNLOCK LOCALE_READ_UNLOCK
7721 # define GETPROTOENT_LOCK gwLOCALEr_LOCK
7722 # define GETPROTOENT_UNLOCK gwLOCALEr_UNLOCK
7724 #ifdef PERL_REENTR_USING_GETPWNAM_R
7725 # define GETPWNAM_LOCK LOCALE_READ_LOCK
7726 # define GETPWNAM_UNLOCK LOCALE_READ_UNLOCK
7728 # define GETPWNAM_LOCK gwLOCALEr_LOCK
7729 # define GETPWNAM_UNLOCK gwLOCALEr_UNLOCK
7731 #ifdef PERL_REENTR_USING_GETPWUID_R
7732 # define GETPWUID_LOCK LOCALE_READ_LOCK
7733 # define GETPWUID_UNLOCK LOCALE_READ_UNLOCK
7735 # define GETPWUID_LOCK gwLOCALEr_LOCK
7736 # define GETPWUID_UNLOCK gwLOCALEr_UNLOCK
7738 #ifdef PERL_REENTR_USING_GETSERVBYNAME_R
7739 # define GETSERVBYNAME_LOCK LOCALE_READ_LOCK
7740 # define GETSERVBYNAME_UNLOCK LOCALE_READ_UNLOCK
7742 # define GETSERVBYNAME_LOCK gwLOCALEr_LOCK
7743 # define GETSERVBYNAME_UNLOCK gwLOCALEr_UNLOCK
7745 #ifdef PERL_REENTR_USING_GETSERVBYPORT_R
7746 # define GETSERVBYPORT_LOCK LOCALE_READ_LOCK
7747 # define GETSERVBYPORT_UNLOCK LOCALE_READ_UNLOCK
7749 # define GETSERVBYPORT_LOCK gwLOCALEr_LOCK
7750 # define GETSERVBYPORT_UNLOCK gwLOCALEr_UNLOCK
7752 #ifdef PERL_REENTR_USING_GETSERVENT_R
7753 # define GETSERVENT_LOCK LOCALE_READ_LOCK
7754 # define GETSERVENT_UNLOCK LOCALE_READ_UNLOCK
7756 # define GETSERVENT_LOCK gwLOCALEr_LOCK
7757 # define GETSERVENT_UNLOCK gwLOCALEr_UNLOCK
7759 #ifdef PERL_REENTR_USING_GETSPNAM_R
7760 # define GETSPNAM_LOCK LOCALE_READ_LOCK
7761 # define GETSPNAM_UNLOCK LOCALE_READ_UNLOCK
7763 # define GETSPNAM_LOCK gwLOCALEr_LOCK
7764 # define GETSPNAM_UNLOCK gwLOCALEr_UNLOCK
7767 #define STRFMON_LOCK LC_MONETARY_LOCK
7768 #define STRFMON_UNLOCK LC_MONETARY_UNLOCK
7770 /* End of locale/env synchronization */
7772 #ifndef PERL_NO_INLINE_FUNCTIONS
7773 /* Static inline funcs that depend on includes and declarations above.
7774 Some of these reference functions in the perl object files, and some
7775 compilers aren't smart enough to eliminate unused static inline
7776 functions, so including this file in source code can cause link errors
7777 even if the source code uses none of the functions. Hence including these
7778 can be suppressed by setting PERL_NO_INLINE_FUNCTIONS. Doing this will
7779 (obviously) result in unworkable XS code, but allows simple probing code
7780 to continue to work, because it permits tests to include the perl headers
7781 for definitions without creating a link dependency on the perl library
7782 (which may not exist yet).
7787 # include "perlstatic.h"
7788 # include "inline.h"
7789 # include "sv_inline.h"
7797 =for apidoc_section $numeric
7799 =for apidoc AmTR|NV|Strtod|NN const char * const s|NULLOK char ** e
7801 This is a synonym for L</my_strtod>.
7803 =for apidoc AmTR|NV|Strtol|NN const char * const s|NULLOK char ** e|int base
7805 Platform and configuration independent C<strtol>. This expands to the
7806 appropriate C<strotol>-like function based on the platform and F<Configure>
7807 options>. For example it could expand to C<strtoll> or C<strtoq> instead of
7810 =for apidoc AmTR|NV|Strtoul|NN const char * const s|NULLOK char ** e|int base
7812 Platform and configuration independent C<strtoul>. This expands to the
7813 appropriate C<strotoul>-like function based on the platform and F<Configure>
7814 options>. For example it could expand to C<strtoull> or C<strtouq> instead of
7821 #define Strtod my_strtod
7823 #if defined(HAS_STRTOD) \
7824 || defined(USE_QUADMATH) \
7825 || (defined(HAS_STRTOLD) && defined(HAS_LONG_DOUBLE) \
7826 && defined(USE_LONG_DOUBLE))
7827 # define Perl_strtod Strtod
7830 #if !defined(Strtol) && defined(USE_64_BIT_INT) && defined(IV_IS_QUAD) && \
7831 (QUADKIND == QUAD_IS_LONG_LONG || QUADKIND == QUAD_IS___INT64)
7833 # define strtoll __strtoll /* secret handshake */
7835 # if defined(WIN64) && defined(_MSC_VER)
7836 # define strtoll _strtoi64 /* secret handshake */
7838 # if !defined(Strtol) && defined(HAS_STRTOLL)
7839 # define Strtol strtoll
7841 # if !defined(Strtol) && defined(HAS_STRTOQ)
7842 # define Strtol strtoq
7844 /* is there atoq() anywhere? */
7846 #if !defined(Strtol) && defined(HAS_STRTOL)
7847 # define Strtol strtol
7850 /* It would be more fashionable to use Strtol() to define atol()
7851 * (as is done for Atoul(), see below) but for backward compatibility
7852 * we just assume atol(). */
7853 # if defined(USE_64_BIT_INT) && defined(IV_IS_QUAD) && defined(HAS_ATOLL) && \
7854 (QUADKIND == QUAD_IS_LONG_LONG || QUADKIND == QUAD_IS___INT64)
7856 # define atoll _atoi64 /* secret handshake */
7864 #if !defined(Strtoul) && defined(USE_64_BIT_INT) && defined(UV_IS_QUAD) && \
7865 (QUADKIND == QUAD_IS_LONG_LONG || QUADKIND == QUAD_IS___INT64)
7867 # define strtoull __strtoull /* secret handshake */
7869 # if defined(WIN64) && defined(_MSC_VER)
7870 # define strtoull _strtoui64 /* secret handshake */
7872 # if !defined(Strtoul) && defined(HAS_STRTOULL)
7873 # define Strtoul strtoull
7875 # if !defined(Strtoul) && defined(HAS_STRTOUQ)
7876 # define Strtoul strtouq
7878 /* is there atouq() anywhere? */
7880 #if !defined(Strtoul) && defined(HAS_STRTOUL)
7881 # define Strtoul strtoul
7883 #if !defined(Strtoul) && defined(HAS_STRTOL) /* Last resort. */
7884 # define Strtoul(s, e, b) strchr((s), '-') ? ULONG_MAX : (unsigned long)strtol((s), (e), (b))
7887 # define Atoul(s) Strtoul(s, NULL, 10)
7890 #define grok_bin(s,lp,fp,rp) \
7891 grok_bin_oct_hex(s, lp, fp, rp, 1, CC_BINDIGIT_, 'b')
7892 #define grok_oct(s,lp,fp,rp) \
7893 (*(fp) |= PERL_SCAN_DISALLOW_PREFIX, \
7894 grok_bin_oct_hex(s, lp, fp, rp, 3, CC_OCTDIGIT_, '\0'))
7895 #define grok_hex(s,lp,fp,rp) \
7896 grok_bin_oct_hex(s, lp, fp, rp, 4, CC_XDIGIT_, 'x')
7898 #ifndef PERL_SCRIPT_MODE
7899 #define PERL_SCRIPT_MODE "r"
7902 /* not used. Kept as a NOOP for backcompat */
7903 #define PERL_STACK_OVERFLOW_CHECK() NOOP
7906 * Some nonpreemptive operating systems find it convenient to
7907 * check for asynchronous conditions after each op execution.
7908 * Keep this check simple, or it may slow down execution
7912 #ifndef PERL_ASYNC_CHECK
7913 #define PERL_ASYNC_CHECK() if (UNLIKELY(PL_sig_pending)) PL_signalhook(aTHX)
7917 * On some operating systems, a memory allocation may succeed,
7918 * but put the process too close to the system's comfort limit.
7919 * In this case, PERL_ALLOC_CHECK frees the pointer and sets
7922 #ifndef PERL_ALLOC_CHECK
7923 #define PERL_ALLOC_CHECK(p) NOOP
7927 # include <sys/ipc.h>
7928 # include <sys/sem.h>
7929 # ifndef HAS_UNION_SEMUN /* Provide the union semun. */
7932 struct semid_ds *buf;
7933 unsigned short *array;
7936 # ifdef USE_SEMCTL_SEMUN
7937 # ifdef IRIX32_SEMUN_BROKEN_BY_GCC
7938 union gccbug_semun {
7940 struct semid_ds *buf;
7941 unsigned short *array;
7944 # define semun gccbug_semun
7946 # define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun)
7947 # elif defined(USE_SEMCTL_SEMID_DS)
7948 # ifdef EXTRA_F_IN_SEMUN_BUF
7949 # define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun.buff)
7951 # define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun.buf)
7957 * Boilerplate macros for initializing and accessing interpreter-local
7958 * data from C. All statics in extensions should be reworked to use
7959 * this, if you want to make the extension thread-safe. See
7960 * ext/XS/APItest/APItest.xs for an example of the use of these macros,
7961 * and perlxs.pod for more.
7963 * Code that uses these macros is responsible for the following:
7964 * 1. #define MY_CXT_KEY to a unique string, e.g.
7965 * "DynaLoader::_guts" XS_VERSION
7966 * XXX in the current implementation, this string is ignored.
7967 * 2. Declare a typedef named my_cxt_t that is a structure that contains
7968 * all the data that needs to be interpreter-local that perl controls. This
7969 * doesn't include things that libc controls, such as the uselocale object
7970 * in Configurations that use it.
7971 * 3. Use the START_MY_CXT macro after the declaration of my_cxt_t.
7972 * 4. Use the MY_CXT_INIT macro such that it is called exactly once
7973 * (typically put in the BOOT: section).
7974 * 5. Use the members of the my_cxt_t structure everywhere as
7976 * 6. Use the dMY_CXT macro (a declaration) in all the functions that
7980 #if defined(MULTIPLICITY)
7982 /* START_MY_CXT must appear in all extensions that define a my_cxt_t structure,
7983 * right after the definition (i.e. at file scope). The non-threads
7984 * case below uses it to declare the data as static. */
7985 # define START_MY_CXT static int my_cxt_index = -1;
7986 # define MY_CXT_INDEX my_cxt_index
7987 # define MY_CXT_INIT_ARG &my_cxt_index
7989 /* Creates and zeroes the per-interpreter data.
7990 * (We allocate my_cxtp in a Perl SV so that it will be released when
7991 * the interpreter goes away.) */
7992 # define MY_CXT_INIT \
7993 my_cxt_t *my_cxtp = \
7994 (my_cxt_t*)Perl_my_cxt_init(aTHX_ MY_CXT_INIT_ARG, sizeof(my_cxt_t)); \
7995 PERL_UNUSED_VAR(my_cxtp)
7996 # define MY_CXT_INIT_INTERP(my_perl) \
7997 my_cxt_t *my_cxtp = \
7998 (my_cxt_t*)Perl_my_cxt_init(my_perl, MY_CXT_INIT_ARG, sizeof(my_cxt_t)); \
7999 PERL_UNUSED_VAR(my_cxtp)
8001 /* This declaration should be used within all functions that use the
8002 * interpreter-local data. */
8004 my_cxt_t *my_cxtp = (my_cxt_t *)PL_my_cxt_list[MY_CXT_INDEX]
8005 # define dMY_CXT_INTERP(my_perl) \
8006 my_cxt_t *my_cxtp = (my_cxt_t *)(my_perl)->Imy_cxt_list[MY_CXT_INDEX]
8008 /* Clones the per-interpreter data. */
8009 # define MY_CXT_CLONE \
8010 my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1));\
8011 void * old_my_cxtp = PL_my_cxt_list[MY_CXT_INDEX]; \
8012 PL_my_cxt_list[MY_CXT_INDEX] = my_cxtp; \
8013 Copy(old_my_cxtp, my_cxtp, 1, my_cxt_t);
8017 /* This macro must be used to access members of the my_cxt_t structure.
8018 * e.g. MY_CXT.some_data */
8019 # define MY_CXT (*my_cxtp)
8021 /* Judicious use of these macros can reduce the number of times dMY_CXT
8022 * is used. Use is similar to pTHX, aTHX etc. */
8023 # define pMY_CXT my_cxt_t *my_cxtp
8024 # define pMY_CXT_ pMY_CXT,
8025 # define _pMY_CXT ,pMY_CXT
8026 # define aMY_CXT my_cxtp
8027 # define aMY_CXT_ aMY_CXT,
8028 # define _aMY_CXT ,aMY_CXT
8030 #else /* MULTIPLICITY */
8031 # define START_MY_CXT static my_cxt_t my_cxt;
8032 # define dMY_CXT dNOOP
8033 # define dMY_CXT_INTERP(my_perl) dNOOP
8034 # define MY_CXT_INIT NOOP
8035 # define MY_CXT_CLONE NOOP
8036 # define MY_CXT my_cxt
8038 # define pMY_CXT void
8045 #endif /* !defined(MULTIPLICITY) */
8056 # undef FD_CLOEXEC /* a lie in AmigaOS */
8060 # include <sys/file.h>
8063 #if defined(HAS_FLOCK) && !defined(HAS_FLOCK_PROTO)
8064 EXTERN_C int flock(int fd, int op);
8068 /* Assume UNIX defaults */
8069 # define O_RDONLY 0000
8070 # define O_WRONLY 0001
8071 # define O_RDWR 0002
8072 # define O_CREAT 0100
8083 #if O_TEXT != O_BINARY
8084 /* If you have different O_TEXT and O_BINARY and you are a CRLF shop,
8085 * that is, you are somehow DOSish. */
8086 # if defined(__HAIKU__) || defined(__VOS__) || defined(__CYGWIN__)
8087 /* Haiku has O_TEXT != O_BINARY but O_TEXT and O_BINARY have no effect;
8088 * Haiku is always UNIXoid (LF), not DOSish (CRLF). */
8089 /* VOS has O_TEXT != O_BINARY, and they have effect,
8090 * but VOS always uses LF, never CRLF. */
8091 /* If you have O_TEXT different from your O_BINARY but you still are
8092 * not a CRLF shop. */
8093 # undef PERLIO_USING_CRLF
8095 /* If you really are DOSish. */
8096 # define PERLIO_USING_CRLF 1
8101 # include <libutil.h> /* setproctitle() in some FreeBSDs */
8104 #ifndef EXEC_ARGV_CAST
8105 #define EXEC_ARGV_CAST(x) (char **)x
8108 #define IS_NUMBER_IN_UV 0x01 /* number within UV range (maybe not
8109 int). value returned in pointed-
8111 #define IS_NUMBER_GREATER_THAN_UV_MAX 0x02 /* pointed to UV undefined */
8112 #define IS_NUMBER_NOT_INT 0x04 /* saw . or E notation or infnan */
8113 #define IS_NUMBER_NEG 0x08 /* leading minus sign */
8114 #define IS_NUMBER_INFINITY 0x10 /* this is big */
8115 #define IS_NUMBER_NAN 0x20 /* this is not */
8116 #define IS_NUMBER_TRAILING 0x40 /* number has trailing trash */
8119 =for apidoc_section $numeric
8121 =for apidoc AmdR|bool|GROK_NUMERIC_RADIX|NN const char **sp|NN const char *send
8123 A synonym for L</grok_numeric_radix>
8127 #define GROK_NUMERIC_RADIX(sp, send) grok_numeric_radix(sp, send)
8129 /* Number scan flags. All are used for input, the ones used for output are so
8131 #define PERL_SCAN_ALLOW_UNDERSCORES 0x01 /* grok_??? accept _ in numbers */
8132 #define PERL_SCAN_DISALLOW_PREFIX 0x02 /* grok_??? reject 0x in hex etc */
8134 /* grok_??? input: ignored; output: found overflow */
8135 #define PERL_SCAN_GREATER_THAN_UV_MAX 0x04
8137 /* grok_??? don't warn about illegal digits. To preserve total backcompat,
8138 * this isn't set on output if one is found. Instead, see
8139 * PERL_SCAN_NOTIFY_ILLDIGIT. */
8140 #define PERL_SCAN_SILENT_ILLDIGIT 0x08
8142 #define PERL_SCAN_TRAILING 0x10 /* grok_number_flags() allow trailing
8143 and set IS_NUMBER_TRAILING */
8145 /* These are considered experimental, so not exposed publicly */
8146 #if defined(PERL_CORE) || defined(PERL_EXT)
8147 /* grok_??? don't warn about very large numbers which are <= UV_MAX;
8148 * output: found such a number */
8149 # define PERL_SCAN_SILENT_NON_PORTABLE 0x20
8151 /* If this is set on input, and no illegal digit is found, it will be cleared
8152 * on output; otherwise unchanged */
8153 # define PERL_SCAN_NOTIFY_ILLDIGIT 0x40
8155 /* Don't warn on overflow; output flag still set */
8156 # define PERL_SCAN_SILENT_OVERFLOW 0x80
8158 /* Forbid a leading underscore, which the other one doesn't */
8159 # define PERL_SCAN_ALLOW_MEDIAL_UNDERSCORES (0x100|PERL_SCAN_ALLOW_UNDERSCORES)
8163 /* to let user control profiling */
8164 #ifdef PERL_GPROF_CONTROL
8165 extern void moncontrol(int);
8166 #define PERL_GPROF_MONCONTROL(x) moncontrol(x)
8168 #define PERL_GPROF_MONCONTROL(x)
8171 /* ISO 6429 NEL - C1 control NExt Line */
8172 /* See https://www.unicode.org/unicode/reports/tr13/ */
8173 #define NEXT_LINE_CHAR NEXT_LINE_NATIVE
8175 #ifndef PIPESOCK_MODE
8176 # define PIPESOCK_MODE
8179 #ifndef SOCKET_OPEN_MODE
8180 # define SOCKET_OPEN_MODE PIPESOCK_MODE
8183 #ifndef PIPE_OPEN_MODE
8184 # define PIPE_OPEN_MODE PIPESOCK_MODE
8187 #define PERL_MAGIC_UTF8_CACHESIZE 2
8191 #define PERL_UNICODE_STDIN_FLAG 0x0001
8192 #define PERL_UNICODE_STDOUT_FLAG 0x0002
8193 #define PERL_UNICODE_STDERR_FLAG 0x0004
8194 #define PERL_UNICODE_IN_FLAG 0x0008
8195 #define PERL_UNICODE_OUT_FLAG 0x0010
8196 #define PERL_UNICODE_ARGV_FLAG 0x0020
8197 #define PERL_UNICODE_LOCALE_FLAG 0x0040
8198 #define PERL_UNICODE_WIDESYSCALLS_FLAG 0x0080 /* for Sarathy */
8199 #define PERL_UNICODE_UTF8CACHEASSERT_FLAG 0x0100
8201 #define PERL_UNICODE_STD_FLAG \
8202 (PERL_UNICODE_STDIN_FLAG | \
8203 PERL_UNICODE_STDOUT_FLAG | \
8204 PERL_UNICODE_STDERR_FLAG)
8206 #define PERL_UNICODE_INOUT_FLAG \
8207 (PERL_UNICODE_IN_FLAG | \
8208 PERL_UNICODE_OUT_FLAG)
8210 #define PERL_UNICODE_DEFAULT_FLAGS \
8211 (PERL_UNICODE_STD_FLAG | \
8212 PERL_UNICODE_INOUT_FLAG | \
8213 PERL_UNICODE_LOCALE_FLAG)
8215 #define PERL_UNICODE_ALL_FLAGS 0x01ff
8217 #define PERL_UNICODE_STDIN 'I'
8218 #define PERL_UNICODE_STDOUT 'O'
8219 #define PERL_UNICODE_STDERR 'E'
8220 #define PERL_UNICODE_STD 'S'
8221 #define PERL_UNICODE_IN 'i'
8222 #define PERL_UNICODE_OUT 'o'
8223 #define PERL_UNICODE_INOUT 'D'
8224 #define PERL_UNICODE_ARGV 'A'
8225 #define PERL_UNICODE_LOCALE 'L'
8226 #define PERL_UNICODE_WIDESYSCALLS 'W'
8227 #define PERL_UNICODE_UTF8CACHEASSERT 'a'
8232 =for apidoc_section $signals
8233 =for apidoc Amn|U32|PERL_SIGNALS_UNSAFE_FLAG
8234 If this bit in C<PL_signals> is set, the system is uing the pre-Perl 5.8
8235 unsafe signals. See L<perlrun/PERL_SIGNALS> and L<perlipc/Deferred Signals
8240 #define PERL_SIGNALS_UNSAFE_FLAG 0x0001
8243 =for apidoc_section $numeric
8245 =for apidoc Am|int|PERL_ABS|int x
8247 Typeless C<abs> or C<fabs>, I<etc>. (The usage below indicates it is for
8248 integers, but it works for any type.) Use instead of these, since the C
8249 library ones force their argument to be what it is expecting, potentially
8250 leading to disaster. But also beware that this evaluates its argument twice,
8256 #define PERL_ABS(x) ((x) < 0 ? -(x) : (x))
8258 #if defined(__DECC) && defined(__osf__)
8259 #pragma message disable (mainparm) /* Perl uses the envp in main(). */
8262 #define do_open(g, n, l, a, rm, rp, sf) \
8263 do_openn(g, n, l, a, rm, rp, sf, (SV **) NULL, 0)
8264 #ifdef PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION
8265 # define do_exec(cmd) do_exec3(cmd,0,0)
8268 # define do_aexec Perl_do_aexec
8270 # define do_aexec(really, mark,sp) do_aexec5(really, mark, sp, 0, 0)
8275 =for apidoc_section $utility
8277 =for apidoc Am|bool|IS_SAFE_SYSCALL|NN const char *pv|STRLEN len|NN const char *what|NN const char *op_name
8279 Same as L</is_safe_syscall>.
8283 Allows one ending \0
8285 #define IS_SAFE_SYSCALL(p, len, what, op_name) (Perl_is_safe_syscall(aTHX_ (p), (len), (what), (op_name)))
8287 #define IS_SAFE_PATHNAME(p, len, op_name) IS_SAFE_SYSCALL((p), (len), "pathname", (op_name))
8289 #if defined(OEMVS) || defined(__amigaos4__)
8290 #define NO_ENV_ARRAY_IN_MAIN
8293 /* These are used by Perl_pv_escape() and Perl_pv_pretty()
8294 * are here so that they are available throughout the core
8295 * NOTE that even though some are for _escape and some for _pretty
8296 * there must not be any clashes as the flags from _pretty are
8297 * passed straight through to _escape.
8300 #define PERL_PV_ESCAPE_QUOTE 0x000001
8301 #define PERL_PV_PRETTY_QUOTE PERL_PV_ESCAPE_QUOTE
8303 #define PERL_PV_PRETTY_ELLIPSES 0x000002
8304 #define PERL_PV_PRETTY_LTGT 0x000004
8305 #define PERL_PV_PRETTY_EXACTSIZE 0x000008
8307 #define PERL_PV_ESCAPE_UNI 0x000100
8308 #define PERL_PV_ESCAPE_UNI_DETECT 0x000200
8309 #define PERL_PV_ESCAPE_NONASCII 0x000400
8310 #define PERL_PV_ESCAPE_FIRSTCHAR 0x000800
8312 #define PERL_PV_ESCAPE_ALL 0x001000
8313 #define PERL_PV_ESCAPE_NOBACKSLASH 0x002000
8314 #define PERL_PV_ESCAPE_NOCLEAR 0x004000
8315 #define PERL_PV_PRETTY_NOCLEAR PERL_PV_ESCAPE_NOCLEAR
8316 #define PERL_PV_ESCAPE_RE 0x008000
8318 /* Escape PV with hex, except leave NULs as octal: */
8319 #define PERL_PV_ESCAPE_DWIM 0x010000
8321 /* Escape PV with all hex, including NUL. */
8322 #define PERL_PV_ESCAPE_DWIM_ALL_HEX 0x020000
8324 /* Do not escape word characters, alters meaning of other flags */
8325 #define PERL_PV_ESCAPE_NON_WC 0x040000
8326 #define PERL_PV_ESCAPE_TRUNC_MIDDLE 0x080000
8328 #define PERL_PV_PRETTY_QUOTEDPREFIX ( \
8329 PERL_PV_PRETTY_ELLIPSES | \
8330 PERL_PV_PRETTY_QUOTE | \
8331 PERL_PV_ESCAPE_NONASCII | \
8332 PERL_PV_ESCAPE_NON_WC | \
8333 PERL_PV_ESCAPE_TRUNC_MIDDLE | \
8337 /* used by pv_display in dump.c*/
8338 #define PERL_PV_PRETTY_DUMP PERL_PV_PRETTY_ELLIPSES|PERL_PV_PRETTY_QUOTE
8339 #define PERL_PV_PRETTY_REGPROP PERL_PV_PRETTY_ELLIPSES|PERL_PV_PRETTY_LTGT|PERL_PV_ESCAPE_RE|PERL_PV_ESCAPE_NONASCII
8341 #if DOUBLEKIND == DOUBLE_IS_VAX_F_FLOAT || \
8342 DOUBLEKIND == DOUBLE_IS_VAX_D_FLOAT || \
8343 DOUBLEKIND == DOUBLE_IS_VAX_G_FLOAT
8344 # define DOUBLE_IS_VAX_FLOAT
8346 # define DOUBLE_IS_IEEE_FORMAT
8349 #if DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_LITTLE_ENDIAN || \
8350 DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_LITTLE_ENDIAN || \
8351 DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN
8352 # define DOUBLE_LITTLE_ENDIAN
8355 #if DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_BIG_ENDIAN || \
8356 DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_BIG_ENDIAN || \
8357 DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN
8358 # define DOUBLE_BIG_ENDIAN
8361 #if DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_LE_BE || \
8362 DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_BE_LE
8363 # define DOUBLE_MIX_ENDIAN
8366 /* The VAX fp formats are neither consistently little-endian nor
8367 * big-endian, and neither are they really IEEE-mixed endian like
8368 * the mixed-endian ARM IEEE formats (with swapped bytes).
8369 * Ultimately, the VAX format came from the PDP-11.
8371 * The ordering of the parts in VAX floats is quite vexing.
8372 * In the below the fraction_n are the mantissa bits.
8374 * The fraction_1 is the most significant (numbering as by DEC/Digital),
8375 * while the rightmost bit in each fraction is the least significant:
8376 * in other words, big-endian bit order within the fractions.
8378 * The fraction segments themselves would be big-endianly, except that
8379 * within 32 bit segments the less significant half comes first, the more
8380 * significant after, except that in the format H (used for long doubles)
8381 * the first fraction segment is alone, because the exponent is wider.
8382 * This means for example that both the most and the least significant
8383 * bits can be in the middle of the floats, not at either end.
8386 * http://nssdc.gsfc.nasa.gov/nssdc/formats/VAXFloatingPoint.htm
8387 * http://www.quadibloc.com/comp/cp0201.htm
8388 * http://h71000.www7.hp.com/doc/82final/6443/6443pro_028.html
8389 * (somebody at HP should be fired for the URLs)
8391 * F fraction_2:16 sign:1 exp:8 fraction_1:7
8392 * (exponent bias 128, hidden first one-bit)
8394 * D fraction_2:16 sign:1 exp:8 fraction_1:7
8395 * fraction_4:16 fraction_3:16
8396 * (exponent bias 128, hidden first one-bit)
8398 * G fraction_2:16 sign:1 exp:11 fraction_1:4
8399 * fraction_4:16 fraction_3:16
8400 * (exponent bias 1024, hidden first one-bit)
8402 * H fraction_1:16 sign:1 exp:15
8403 * fraction_3:16 fraction_2:16
8404 * fraction_5:16 fraction_4:16
8405 * fraction_7:16 fraction_6:16
8406 * (exponent bias 16384, hidden first one-bit)
8407 * (available only on VAX, and only on Fortran?)
8409 * The formats S, T and X are available on the Alpha (and Itanium,
8410 * also known as I64/IA64) and are equivalent with the IEEE-754 formats
8411 * binary32, binary64, and binary128 (commonly: float, double, long double).
8413 * S sign:1 exp:8 mantissa:23
8414 * (exponent bias 127, hidden first one-bit)
8416 * T sign:1 exp:11 mantissa:52
8417 * (exponent bias 1022, hidden first one-bit)
8419 * X sign:1 exp:15 mantissa:112
8420 * (exponent bias 16382, hidden first one-bit)
8424 #ifdef DOUBLE_IS_VAX_FLOAT
8425 # define DOUBLE_VAX_ENDIAN
8428 #ifdef DOUBLE_IS_IEEE_FORMAT
8429 /* All the basic IEEE formats have the implicit bit,
8430 * except for the x86 80-bit extended formats, which will undef this.
8431 * Also note that the IEEE 754 subnormals (formerly known as denormals)
8432 * do not have the implicit bit of one. */
8433 # define NV_IMPLICIT_BIT
8436 #if defined(LONG_DOUBLEKIND) && LONG_DOUBLEKIND != LONG_DOUBLE_IS_DOUBLE
8438 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN || \
8439 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN || \
8440 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE
8441 # define LONGDOUBLE_LITTLE_ENDIAN
8444 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN || \
8445 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN || \
8446 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE
8447 # define LONGDOUBLE_BIG_ENDIAN
8450 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE || \
8451 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE
8452 # define LONGDOUBLE_MIX_ENDIAN
8455 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN || \
8456 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN
8457 # define LONGDOUBLE_X86_80_BIT
8458 # ifdef USE_LONG_DOUBLE
8459 # undef NV_IMPLICIT_BIT
8460 # define NV_X86_80_BIT
8464 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE || \
8465 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE || \
8466 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE || \
8467 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE
8468 # define LONGDOUBLE_DOUBLEDOUBLE
8471 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_VAX_H_FLOAT
8472 # define LONGDOUBLE_VAX_ENDIAN
8475 #endif /* LONG_DOUBLEKIND */
8477 #ifdef USE_QUADMATH /* assume quadmath endianness == native double endianness */
8478 # if defined(DOUBLE_LITTLE_ENDIAN)
8479 # define NV_LITTLE_ENDIAN
8480 # elif defined(DOUBLE_BIG_ENDIAN)
8481 # define NV_BIG_ENDIAN
8482 # elif defined(DOUBLE_MIX_ENDIAN) /* stretch */
8483 # define NV_MIX_ENDIAN
8485 #elif NVSIZE == DOUBLESIZE
8486 # ifdef DOUBLE_LITTLE_ENDIAN
8487 # define NV_LITTLE_ENDIAN
8489 # ifdef DOUBLE_BIG_ENDIAN
8490 # define NV_BIG_ENDIAN
8492 # ifdef DOUBLE_MIX_ENDIAN
8493 # define NV_MIX_ENDIAN
8495 # ifdef DOUBLE_VAX_ENDIAN
8496 # define NV_VAX_ENDIAN
8498 #elif NVSIZE == LONG_DOUBLESIZE
8499 # ifdef LONGDOUBLE_LITTLE_ENDIAN
8500 # define NV_LITTLE_ENDIAN
8502 # ifdef LONGDOUBLE_BIG_ENDIAN
8503 # define NV_BIG_ENDIAN
8505 # ifdef LONGDOUBLE_MIX_ENDIAN
8506 # define NV_MIX_ENDIAN
8508 # ifdef LONGDOUBLE_VAX_ENDIAN
8509 # define NV_VAX_ENDIAN
8513 /* We have somehow managed not to define the denormal/subnormal
8516 * This may happen if the compiler doesn't expose the C99 math like
8517 * the fpclassify() without some special switches. Perl tries to
8518 * stay C89, so for example -std=c99 is not an option.
8520 * The Perl_isinf() and Perl_isnan() should have been defined even if
8521 * the C99 isinf() and isnan() are unavailable, and the NV_MIN becomes
8522 * from the C89 DBL_MIN or moral equivalent. */
8523 #if !defined(Perl_fp_class_denorm) && defined(Perl_isinf) && defined(Perl_isnan) && defined(NV_MIN)
8524 # define Perl_fp_class_denorm(x) ((x) != 0.0 && !Perl_isinf(x) && !Perl_isnan(x) && PERL_ABS(x) < NV_MIN)
8527 /* This is not a great fallback: subnormals tests will fail,
8528 * but at least Perl will link and 99.999% of tests will work. */
8529 #if !defined(Perl_fp_class_denorm)
8530 # define Perl_fp_class_denorm(x) FALSE
8533 #ifdef DOUBLE_IS_IEEE_FORMAT
8534 # define DOUBLE_HAS_INF
8535 # define DOUBLE_HAS_NAN
8538 #ifdef DOUBLE_HAS_NAN
8544 /* PL_inf and PL_nan initialization.
8546 * For inf and nan initialization the ultimate fallback is dividing
8547 * one or zero by zero: however, some compilers will warn or even fail
8548 * on divide-by-zero, but hopefully something earlier will work.
8550 * If you are thinking of using HUGE_VAL for infinity, or using
8551 * <math.h> functions to generate NV_INF (e.g. exp(1e9), log(-1.0)),
8552 * stop. Neither will work portably: HUGE_VAL can be just DBL_MAX,
8553 * and the math functions might be just generating DBL_MAX, or even zero.
8555 * Also, do NOT try doing NV_NAN based on NV_INF and trying (NV_INF-NV_INF).
8556 * Though logically correct, some compilers (like Visual C 2003)
8557 * falsely misoptimize that to zero (x-x is always zero, right?)
8559 * Finally, note that not all floating point formats define Inf (or NaN).
8560 * For the infinity a large number may be used instead. Operations that
8561 * under the IEEE floating point would return Inf or NaN may return
8562 * either large numbers (positive or negative), or they may cause
8563 * a floating point exception or some other fault.
8566 /* The quadmath literals are anon structs which -Wc++-compat doesn't like. */
8567 # ifndef USE_CPLUSPLUS
8568 GCC_DIAG_IGNORE_DECL(-Wc++-compat);
8571 # ifdef USE_QUADMATH
8572 /* Cannot use HUGE_VALQ for PL_inf because not a compile-time
8574 INFNAN_NV_U8_DECL PL_inf = { 1.0Q/0.0Q };
8575 # elif NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLINFBYTES)
8576 INFNAN_U8_NV_DECL PL_inf = { { LONGDBLINFBYTES } };
8577 # elif NVSIZE == DOUBLESIZE && defined(DOUBLEINFBYTES)
8578 INFNAN_U8_NV_DECL PL_inf = { { DOUBLEINFBYTES } };
8580 # if NVSIZE == LONG_DOUBLESIZE && defined(USE_LONG_DOUBLE)
8581 # if defined(LDBL_INFINITY)
8582 INFNAN_NV_U8_DECL PL_inf = { LDBL_INFINITY };
8583 # elif defined(LDBL_INF)
8584 INFNAN_NV_U8_DECL PL_inf = { LDBL_INF };
8585 # elif defined(INFINITY)
8586 INFNAN_NV_U8_DECL PL_inf = { (NV)INFINITY };
8588 INFNAN_NV_U8_DECL PL_inf = { (NV)INF };
8590 INFNAN_NV_U8_DECL PL_inf = { 1.0L/0.0L }; /* keep last */
8593 # if defined(DBL_INFINITY)
8594 INFNAN_NV_U8_DECL PL_inf = { DBL_INFINITY };
8595 # elif defined(DBL_INF)
8596 INFNAN_NV_U8_DECL PL_inf = { DBL_INF };
8597 # elif defined(INFINITY) /* C99 */
8598 INFNAN_NV_U8_DECL PL_inf = { (NV)INFINITY };
8600 INFNAN_NV_U8_DECL PL_inf = { (NV)INF };
8602 INFNAN_NV_U8_DECL PL_inf = { 1.0/0.0 }; /* keep last */
8607 # ifdef USE_QUADMATH
8608 /* Cannot use nanq("0") for PL_nan because not a compile-time
8610 INFNAN_NV_U8_DECL PL_nan = { 0.0Q/0.0Q };
8611 # elif NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLNANBYTES)
8612 INFNAN_U8_NV_DECL PL_nan = { { LONGDBLNANBYTES } };
8613 # elif NVSIZE == DOUBLESIZE && defined(DOUBLENANBYTES)
8614 INFNAN_U8_NV_DECL PL_nan = { { DOUBLENANBYTES } };
8616 # if NVSIZE == LONG_DOUBLESIZE && defined(USE_LONG_DOUBLE)
8617 # if defined(LDBL_NAN)
8618 INFNAN_NV_U8_DECL PL_nan = { LDBL_NAN };
8619 # elif defined(LDBL_QNAN)
8620 INFNAN_NV_U8_DECL PL_nan = { LDBL_QNAN };
8622 INFNAN_NV_U8_DECL PL_nan = { (NV)NAN };
8624 INFNAN_NV_U8_DECL PL_nan = { 0.0L/0.0L }; /* keep last */
8627 # if defined(DBL_NAN)
8628 INFNAN_NV_U8_DECL PL_nan = { DBL_NAN };
8629 # elif defined(DBL_QNAN)
8630 INFNAN_NV_U8_DECL PL_nan = { DBL_QNAN };
8631 # elif defined(NAN) /* C99 */
8632 INFNAN_NV_U8_DECL PL_nan = { (NV)NAN };
8634 INFNAN_NV_U8_DECL PL_nan = { 0.0/0.0 }; /* keep last */
8639 # ifndef USE_CPLUSPLUS
8640 GCC_DIAG_RESTORE_DECL;
8645 /* The declarations here need to match the initializations done above,
8646 since a mismatch across compilation units causes undefined
8647 behavior. It also prevents warnings from LTO builds.
8649 # if !defined(USE_QUADMATH) && \
8650 (NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLINFBYTES) || \
8651 NVSIZE == DOUBLESIZE && defined(DOUBLEINFBYTES))
8652 INFNAN_U8_NV_DECL PL_inf;
8654 INFNAN_NV_U8_DECL PL_inf;
8657 # if !defined(USE_QUADMATH) && \
8658 (NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLNANBYTES) || \
8659 NVSIZE == DOUBLESIZE && defined(DOUBLENANBYTES))
8660 INFNAN_U8_NV_DECL PL_nan;
8662 INFNAN_NV_U8_DECL PL_nan;
8669 /* If you have not defined NV_INF/NV_NAN (like for example win32/win32.h),
8670 * we will define NV_INF/NV_NAN as the nv part of the global const
8671 * PL_inf/PL_nan. Note, however, that the preexisting NV_INF/NV_NAN
8672 * might not be a compile-time constant, in which case it cannot be
8673 * used to initialize PL_inf/PL_nan above. */
8675 # define NV_INF PL_inf.nv
8678 # define NV_NAN PL_nan.nv
8681 /* NaNs (not-a-numbers) can carry payload bits, in addition to
8682 * "nan-ness". Part of the payload is the quiet/signaling bit.
8683 * To back up a bit (harhar):
8685 * For IEEE 754 64-bit formats [1]:
8687 * s 000 (mantissa all-zero) zero
8688 * s 000 (mantissa non-zero) subnormals (denormals)
8689 * s 001 ... 7fe normals
8692 * For IEEE 754 128-bit formats:
8694 * s 0000 (mantissa all-zero) zero
8695 * s 0000 (mantissa non-zero) subnormals (denormals)
8696 * s 0001 ... 7ffe normals
8699 * [1] this looks like big-endian, but applies equally to little-endian.
8701 * s = Sign bit. Yes, zeros and nans can have negative sign,
8702 * the interpretation is application-specific.
8704 * q = Quietness bit, the interpretation is platform-specific.
8705 * Most platforms have the most significant bit being one
8706 * meaning quiet, but some (older mips, hppa) have the msb
8707 * being one meaning signaling. Note that the above means
8708 * that on most platforms there cannot be signaling nan with
8709 * zero payload because that is identical with infinity;
8710 * while conversely on older mips/hppa there cannot be a quiet nan
8711 * because that is identical with infinity.
8713 * Moreover, whether there is any behavioral difference
8714 * between quiet and signaling NaNs, depends on the platform.
8716 * x86 80-bit extended precision is different, the mantissa bits:
8718 * 63 62 61 30387+ pre-387 visual c
8719 * -------- ---- -------- --------
8720 * 0 0 0 invalid infinity
8721 * 0 0 1 invalid snan
8722 * 0 1 0 invalid snan
8723 * 0 1 1 invalid snan
8724 * 1 0 0 infinity snan 1.#INF
8725 * 1 0 1 snan 1.#SNAN
8726 * 1 1 0 qnan -1.#IND (x86 chooses this to negative)
8727 * 1 1 1 qnan 1.#QNAN
8729 * This means that in this format there are 61 bits available
8730 * for the nan payload.
8732 * Note that the 32-bit x86 ABI cannot do signaling nans: the x87
8733 * simply cannot preserve the bit. You can either use the 80-bit
8734 * extended precision (long double, -Duselongdouble), or use x86-64.
8736 * In all platforms, the payload bytes (and bits, some of them are
8737 * often in a partial byte) themselves can be either all zero (x86),
8738 * all one (sparc or mips), or a mixture: in IEEE 754 128-bit double
8739 * or in a double-double, the first half of the payload can follow the
8740 * native double, while in the second half the payload can be all
8741 * zeros. (Therefore the mask for payload bits is not necessarily
8742 * identical to bit complement of the NaN.) Another way of putting
8743 * this: the payload for the default NaN might not be zero.
8745 * For the x86 80-bit long doubles, the trailing bytes (the 80 bits
8746 * being 'packaged' in either 12 or 16 bytes) can be whatever random
8749 * Furthermore, the semantics of the sign bit on NaNs are platform-specific.
8750 * On normal floats, the sign bit being on means negative. But this may,
8751 * or may not, be reverted on NaNs: in other words, the default NaN might
8752 * have the sign bit on, and therefore look like negative if you look
8753 * at it at the bit level.
8755 * NaN payloads are not propagated even on copies, or in arithmetics.
8756 * They *might* be, according to some rules, on your particular
8757 * cpu/os/compiler/libraries, but no guarantees.
8759 * To summarize, on most platforms, and for 64-bit doubles
8760 * (using big-endian ordering here):
8762 * [7FF8000000000000..7FFFFFFFFFFFFFFF] quiet
8763 * [FFF8000000000000..FFFFFFFFFFFFFFFF] quiet
8764 * [7FF0000000000001..7FF7FFFFFFFFFFFF] signaling
8765 * [FFF0000000000001..FFF7FFFFFFFFFFFF] signaling
8767 * The C99 nan() is supposed to generate *quiet* NaNs.
8769 * Note the asymmetry:
8770 * The 7FF0000000000000 is positive infinity,
8771 * the FFF0000000000000 is negative infinity.
8774 /* NVMANTBITS is the number of _real_ mantissa bits in an NV.
8775 * For the standard IEEE 754 fp this number is usually one less that
8776 * *DBL_MANT_DIG because of the implicit (aka hidden) bit, which isn't
8777 * real. For the 80-bit extended precision formats (x86*), the number
8778 * of mantissa bits... depends. For normal floats, it's 64. But for
8779 * the inf/nan, it's different (zero for inf, 61 for nan).
8780 * NVMANTBITS works for normal floats. */
8782 /* We do not want to include the quiet/signaling bit. */
8783 #define NV_NAN_BITS (NVMANTBITS - 1)
8785 #if defined(USE_LONG_DOUBLE) && NVSIZE > DOUBLESIZE
8786 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN
8787 # define NV_NAN_QS_BYTE_OFFSET 13
8788 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN
8789 # define NV_NAN_QS_BYTE_OFFSET 2
8790 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN
8791 # define NV_NAN_QS_BYTE_OFFSET 7
8792 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN
8793 # define NV_NAN_QS_BYTE_OFFSET 2
8794 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE
8795 # define NV_NAN_QS_BYTE_OFFSET 13
8796 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE
8797 # define NV_NAN_QS_BYTE_OFFSET 1
8798 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE
8799 # define NV_NAN_QS_BYTE_OFFSET 9
8800 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE
8801 # define NV_NAN_QS_BYTE_OFFSET 6
8803 # error "Unexpected long double format"
8806 # ifdef USE_QUADMATH
8807 # ifdef NV_LITTLE_ENDIAN
8808 # define NV_NAN_QS_BYTE_OFFSET 13
8809 # elif defined(NV_BIG_ENDIAN)
8810 # define NV_NAN_QS_BYTE_OFFSET 2
8812 # error "Unexpected quadmath format"
8814 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_LITTLE_ENDIAN
8815 # define NV_NAN_QS_BYTE_OFFSET 2
8816 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_BIG_ENDIAN
8817 # define NV_NAN_QS_BYTE_OFFSET 1
8818 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_LITTLE_ENDIAN
8819 # define NV_NAN_QS_BYTE_OFFSET 6
8820 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_BIG_ENDIAN
8821 # define NV_NAN_QS_BYTE_OFFSET 1
8822 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN
8823 # define NV_NAN_QS_BYTE_OFFSET 13
8824 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN
8825 # define NV_NAN_QS_BYTE_OFFSET 2
8826 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_LE_BE
8827 # define NV_NAN_QS_BYTE_OFFSET 2 /* bytes 4 5 6 7 0 1 2 3 (MSB 7) */
8828 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_BE_LE
8829 # define NV_NAN_QS_BYTE_OFFSET 5 /* bytes 3 2 1 0 7 6 5 4 (MSB 7) */
8831 /* For example the VAX formats should never
8832 * get here because they do not have NaN. */
8833 # error "Unexpected double format"
8836 /* NV_NAN_QS_BYTE is the byte to test for the quiet/signaling */
8837 #define NV_NAN_QS_BYTE(nvp) (((U8*)(nvp))[NV_NAN_QS_BYTE_OFFSET])
8838 /* NV_NAN_QS_BIT is the bit to test in the NV_NAN_QS_BYTE_OFFSET
8839 * for the quiet/signaling */
8840 #if defined(USE_LONG_DOUBLE) && \
8841 (LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN || \
8842 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN)
8843 # define NV_NAN_QS_BIT_SHIFT 6 /* 0x40 */
8844 #elif defined(USE_LONG_DOUBLE) && \
8845 (LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE || \
8846 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE || \
8847 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE || \
8848 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE)
8849 # define NV_NAN_QS_BIT_SHIFT 3 /* 0x08, but not via NV_NAN_BITS */
8851 # define NV_NAN_QS_BIT_SHIFT ((NV_NAN_BITS) % 8) /* usually 3, or 0x08 */
8853 #define NV_NAN_QS_BIT (1 << (NV_NAN_QS_BIT_SHIFT))
8854 /* NV_NAN_QS_BIT_OFFSET is the bit offset from the beginning of a NV
8855 * (bytes ordered big-endianly) for the quiet/signaling bit
8856 * for the quiet/signaling */
8857 #define NV_NAN_QS_BIT_OFFSET \
8858 (8 * (NV_NAN_QS_BYTE_OFFSET) + (NV_NAN_QS_BIT_SHIFT))
8859 /* NV_NAN_QS_QUIET (always defined) is true if the NV_NAN_QS_QS_BIT being
8860 * on indicates quiet NaN. NV_NAN_QS_SIGNALING (also always defined)
8861 * is true if the NV_NAN_QS_BIT being on indicates signaling NaN. */
8862 #define NV_NAN_QS_QUIET \
8863 ((NV_NAN_QS_BYTE(PL_nan.u8) & NV_NAN_QS_BIT) == NV_NAN_QS_BIT)
8864 #define NV_NAN_QS_SIGNALING (!(NV_NAN_QS_QUIET))
8865 #define NV_NAN_QS_TEST(nvp) (NV_NAN_QS_BYTE(nvp) & NV_NAN_QS_BIT)
8866 /* NV_NAN_IS_QUIET() returns true if the NV behind nvp is a NaN,
8867 * whether it is a quiet NaN, NV_NAN_IS_SIGNALING() if a signaling NaN.
8868 * Note however that these do not check whether the nvp is a NaN. */
8869 #define NV_NAN_IS_QUIET(nvp) \
8870 (NV_NAN_QS_TEST(nvp) == (NV_NAN_QS_QUIET ? NV_NAN_QS_BIT : 0))
8871 #define NV_NAN_IS_SIGNALING(nvp) \
8872 (NV_NAN_QS_TEST(nvp) == (NV_NAN_QS_QUIET ? 0 : NV_NAN_QS_BIT))
8873 #define NV_NAN_SET_QUIET(nvp) \
8874 (NV_NAN_QS_QUIET ? \
8875 (NV_NAN_QS_BYTE(nvp) |= NV_NAN_QS_BIT) : \
8876 (NV_NAN_QS_BYTE(nvp) &= ~NV_NAN_QS_BIT))
8877 #define NV_NAN_SET_SIGNALING(nvp) \
8878 (NV_NAN_QS_QUIET ? \
8879 (NV_NAN_QS_BYTE(nvp) &= ~NV_NAN_QS_BIT) : \
8880 (NV_NAN_QS_BYTE(nvp) |= NV_NAN_QS_BIT))
8881 #define NV_NAN_QS_XOR(nvp) (NV_NAN_QS_BYTE(nvp) ^= NV_NAN_QS_BIT)
8883 /* NV_NAN_PAYLOAD_MASK: masking the nan payload bits.
8885 * NV_NAN_PAYLOAD_PERM: permuting the nan payload bytes.
8886 * 0xFF means "don't go here".*/
8888 /* Shorthands to avoid typoses. */
8889 #define NV_NAN_PAYLOAD_MASK_SKIP_EIGHT \
8890 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0
8891 #define NV_NAN_PAYLOAD_PERM_SKIP_EIGHT \
8892 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
8893 #define NV_NAN_PAYLOAD_PERM_0_TO_7 \
8894 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7
8895 #define NV_NAN_PAYLOAD_PERM_7_TO_0 \
8896 0x7, 0x6, 0x5, 0x4, 0x3, 0x2, 0x1, 0x0
8897 #define NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE \
8898 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
8899 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f, 0x00, 0x00
8900 #define NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE \
8901 NV_NAN_PAYLOAD_PERM_0_TO_7, \
8902 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xFF, 0xFF
8903 #define NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE \
8904 0x00, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, \
8905 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
8906 #define NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE \
8907 0xFF, 0xFF, 0xd, 0xc, 0xb, 0xa, 0x9, 0x8, \
8908 NV_NAN_PAYLOAD_PERM_7_TO_0
8909 #define NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE \
8910 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x00
8911 #define NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE \
8912 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0xFF
8913 #define NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE \
8914 0x00, 0x07, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
8915 #define NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE \
8916 0xFF, 0x6, 0x5, 0x4, 0x3, 0x2, 0x1, 0x0
8918 #if defined(USE_LONG_DOUBLE) && NVSIZE > DOUBLESIZE
8919 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN
8920 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE
8921 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE
8922 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN
8923 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE
8924 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE
8925 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN
8926 # if LONG_DOUBLESIZE == 10
8927 # define NV_NAN_PAYLOAD_MASK \
8928 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, \
8930 # define NV_NAN_PAYLOAD_PERM \
8931 NV_NAN_PAYLOAD_PERM_0_TO_7, 0xFF, 0xFF
8932 # elif LONG_DOUBLESIZE == 12
8933 # define NV_NAN_PAYLOAD_MASK \
8934 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, \
8935 0x00, 0x00, 0x00, 0x00
8936 # define NV_NAN_PAYLOAD_PERM \
8937 NV_NAN_PAYLOAD_PERM_0_TO_7, 0xFF, 0xFF, 0xFF, 0xFF
8938 # elif LONG_DOUBLESIZE == 16
8939 # define NV_NAN_PAYLOAD_MASK \
8940 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, \
8941 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
8942 # define NV_NAN_PAYLOAD_PERM \
8943 NV_NAN_PAYLOAD_PERM_0_TO_7, \
8944 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
8946 # error "Unexpected x86 80-bit little-endian long double format"
8948 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN
8949 # if LONG_DOUBLESIZE == 10
8950 # define NV_NAN_PAYLOAD_MASK \
8951 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, \
8953 # define NV_NAN_PAYLOAD_PERM \
8954 NV_NAN_PAYLOAD_PERM_7_TO_0, 0xFF, 0xFF
8955 # elif LONG_DOUBLESIZE == 12
8956 # define NV_NAN_PAYLOAD_MASK \
8957 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, \
8958 0xff, 0xff, 0x00, 0x00
8959 # define NV_NAN_PAYLOAD_PERM \
8960 NV_NAN_PAYLOAD_PERM_7_TO_0, 0xFF, 0xFF, 0xFF, 0xFF
8961 # elif LONG_DOUBLESIZE == 16
8962 # define NV_NAN_PAYLOAD_MASK \
8963 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, \
8964 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
8965 # define NV_NAN_PAYLOAD_PERM \
8966 NV_NAN_PAYLOAD_PERM_7_TO_0, \
8967 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
8969 # error "Unexpected x86 80-bit big-endian long double format"
8971 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE
8972 /* For double-double we assume only the first double (in LE or BE terms)
8973 * is used for NaN. */
8974 # define NV_NAN_PAYLOAD_MASK \
8975 NV_NAN_PAYLOAD_MASK_SKIP_EIGHT, NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE
8976 # define NV_NAN_PAYLOAD_PERM \
8977 NV_NAN_PAYLOAD_PERM_SKIP_EIGHT, NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE
8978 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE
8979 # define NV_NAN_PAYLOAD_MASK \
8980 NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE
8981 # define NV_NAN_PAYLOAD_PERM \
8982 NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE
8983 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE
8984 # define NV_NAN_PAYLOAD_MASK \
8985 NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE
8986 # define NV_NAN_PAYLOAD_PERM \
8987 NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE
8988 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE
8989 # define NV_NAN_PAYLOAD_MASK \
8990 NV_NAN_PAYLOAD_MASK_SKIP_EIGHT, NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE
8991 # define NV_NAN_PAYLOAD_PERM \
8992 NV_NAN_PAYLOAD_PERM_SKIP_EIGHT, NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE
8994 # error "Unexpected long double format"
8997 # ifdef USE_QUADMATH /* quadmath is not long double */
8998 # ifdef NV_LITTLE_ENDIAN
8999 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE
9000 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE
9001 # elif defined(NV_BIG_ENDIAN)
9002 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE
9003 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE
9005 # error "Unexpected quadmath format"
9007 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_LITTLE_ENDIAN
9008 # define NV_NAN_PAYLOAD_MASK 0xff, 0xff, 0x07, 0x00
9009 # define NV_NAN_PAYLOAD_PERM 0x0, 0x1, 0x2, 0xFF
9010 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_BIG_ENDIAN
9011 # define NV_NAN_PAYLOAD_MASK 0x00, 0x07, 0xff, 0xff
9012 # define NV_NAN_PAYLOAD_PERM 0xFF, 0x2, 0x1, 0x0
9013 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_LITTLE_ENDIAN
9014 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE
9015 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE
9016 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_BIG_ENDIAN
9017 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE
9018 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE
9019 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN
9020 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE
9021 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE
9022 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN
9023 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE
9024 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE
9025 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_LE_BE
9026 # define NV_NAN_PAYLOAD_MASK 0xff, 0xff, 0x07, 0x00, 0xff, 0xff, 0xff, 0xff
9027 # define NV_NAN_PAYLOAD_PERM 0x4, 0x5, 0x6, 0xFF, 0x0, 0x1, 0x2, 0x3
9028 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_BE_LE
9029 # define NV_NAN_PAYLOAD_MASK 0xff, 0xff, 0xff, 0xff, 0x00, 0x07, 0xff, 0xff
9030 # define NV_NAN_PAYLOAD_PERM 0x3, 0x2, 0x1, 0x0, 0xFF, 0x6, 0x5, 0x4
9032 # error "Unexpected double format"
9036 #endif /* DOUBLE_HAS_NAN */
9038 /* these are used to faciliate the env var PERL_RAND_SEED,
9039 * which allows consistent behavior from code that calls
9040 * srand() with no arguments, either explicitly or implicitly.
9042 #define PERL_SRAND_OVERRIDE_NEXT() PERL_XORSHIFT32_A(PL_srand_override_next);
9044 #define PERL_SRAND_OVERRIDE_NEXT_INIT() STMT_START { \
9045 PL_srand_override = PL_srand_override_next; \
9046 PERL_SRAND_OVERRIDE_NEXT(); \
9049 #define PERL_SRAND_OVERRIDE_GET(into) STMT_START { \
9050 into= PL_srand_override; \
9051 PERL_SRAND_OVERRIDE_NEXT_INIT(); \
9054 #define PERL_SRAND_OVERRIDE_NEXT_CHILD() STMT_START { \
9055 PERL_XORSHIFT32_B(PL_srand_override_next); \
9056 PERL_SRAND_OVERRIDE_NEXT_INIT(); \
9059 #define PERL_SRAND_OVERRIDE_NEXT_PARENT() \
9060 PERL_SRAND_OVERRIDE_NEXT()
9062 /* in something like
9064 * perl -le'sub f { eval "BEGIN{ f() }" }'
9066 * Each iteration chews up 8 stacks frames, and we will eventually SEGV
9067 * due to C stack overflow.
9069 * This define provides a maximum limit to prevent the SEGV. Such code is
9070 * unusual, so it unlikely we need a very large number here.
9072 #ifndef PERL_MAX_NESTED_EVAL_BEGIN_BLOCKS_DEFAULT
9073 #define PERL_MAX_NESTED_EVAL_BEGIN_BLOCKS_DEFAULT 1000
9075 /* ${^MAX_NESTED_EVAL_BEGIN_BLOCKS} */
9076 #define PERL_VAR_MAX_NESTED_EVAL_BEGIN_BLOCKS "\015AX_NESTED_EVAL_BEGIN_BLOCKS"
9078 /* Defines like this make it easier to do porting/diag.t. They are no-
9079 * ops that return their argument which can be used to hint to diag.t
9080 * that a string is actually an error message. By putting the category
9081 * information into the macro name it considerably simplifies extended
9082 * diag.t to support these cases. Feel free to add more.
9084 * While it seems tempting to try to convert all of our diagnostics to
9085 * this format, it would miss part of the point of diag.t in that it
9086 * detects NEW diagnostics, which would not necessarily use these
9087 * macros. The macros instead exist where we know we have an error
9088 * message that isnt being picked up by diag.t because it is declared
9089 * as a string independently of the function it is fed to, something
9090 * diag.t can never handle right without help.
9092 #define PERL_DIAG_STR_(x) ("" x "")
9093 #define PERL_DIAG_WARN_SYNTAX(x) PERL_DIAG_STR_(x)
9094 #define PERL_DIAG_DIE_SYNTAX(x) PERL_DIAG_STR_(x)
9096 #ifndef PERL_STOP_PARSING_AFTER_N_ERRORS
9097 #define PERL_STOP_PARSING_AFTER_N_ERRORS 10
9100 #define PERL_PARSE_ERROR_COUNT(f) (f)
9104 (KEEP THIS LAST IN perl.h!)
9146 so that Configure picks them up.
9148 (KEEP THIS LAST IN perl.h!)
9152 #endif /* Include guard */
9155 * ex: set ts=8 sts=4 sw=4 et: