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.
16 * This file is being used for x2p stuff.
17 * Above symbol is defined via -D in 'x2p/Makefile.SH'
18 * Decouple x2p stuff from some of perls more extreme eccentricities.
23 #endif /* PERL_FOR_X2P */
32 =for apidoc_section $debugging
33 =for apidoc CmnW ||_aDEPTH
34 Some functions when compiled under DEBUGGING take an extra final argument named
35 C<depth>, indicating the C stack depth. This argument is omitted otherwise.
36 This macro expands to either S<C<, depth>> under DEBUGGING, or to nothing at
37 all when not under DEBUGGING, reducing the number of C<#ifdef>'s in the code.
39 The program is responsible for maintaining the correct value for C<depth>.
41 =for apidoc CyW ||_pDEPTH
42 This is used in the prototype declarations for functions that take a L</C<_aDEPTH>>
43 final parameter, much like L<C<pTHX_>|perlguts/Background and MULTIPLICITY>
44 is used in functions that take a thread context initial parameter.
50 # define _pDEPTH ,U32 depth
51 # define _aDEPTH ,depth
57 /* NOTE 1: that with gcc -std=c89 the __STDC_VERSION__ is *not* defined
58 * because the __STDC_VERSION__ became a thing only with C90. Therefore,
59 * with gcc, HAS_C99 will never become true as long as we use -std=c89.
61 * NOTE 2: headers lie. Do not expect that if HAS_C99 gets to be true,
62 * all the C99 features are there and are correct. */
63 #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \
64 defined(_STDC_C99) || defined(__c99)
68 /* See L<perlguts/"The Perl API"> for detailed notes on
69 * MULTIPLICITY and PERL_IMPLICIT_SYS */
71 /* XXX NOTE that from here --> to <-- the same logic is
72 * repeated in makedef.pl, so be certain to update
73 * both places when editing. */
76 # if !defined(MULTIPLICITY)
81 /* PERL_IMPLICIT_CONTEXT is a legacy synonym for MULTIPLICITY */
83 # ifndef PERL_IMPLICIT_CONTEXT
84 # define PERL_IMPLICIT_CONTEXT
87 #if defined(PERL_IMPLICIT_CONTEXT) && !defined(MULTIPLICITY)
91 /* undef WIN32 when building on Cygwin (for libwin32) - gph */
97 /* Use the reentrant APIs like localtime_r and getpwent_r */
98 /* Win32 has naturally threadsafe libraries, no need to use any _r variants.
99 * XXX KEEP makedef.pl copy of this code in sync */
100 #if defined(USE_ITHREADS) && !defined(USE_REENTRANT_API) && !defined(WIN32)
101 # define USE_REENTRANT_API
104 /* <--- here ends the logic shared by perl.h and makedef.pl */
107 =for apidoc_section $directives
108 =for apidoc AmnUu|void|EXTERN_C
109 When not compiling using C++, expands to nothing.
110 Otherwise is used in a declaration of a function to indicate the function
111 should have external C linkage. This is required for things to work for just
112 about all functions with external linkage compiled into perl.
113 Often, you can use C<L</START_EXTERN_C>> ... C<L</END_EXTERN_C>> blocks
114 surrounding all your code that you need to have this linkage.
118 EXTERN_C int flock(int fd, int op);
120 =for apidoc Amnu||START_EXTERN_C
121 When not compiling using C++, expands to nothing.
122 Otherwise begins a section of code in which every function will effectively
123 have C<L</EXTERN_C>> applied to it, that is to have external C linkage. The
124 section is ended by a C<L</END_EXTERN_C>>.
126 =for apidoc Amnu||END_EXTERN_C
127 When not compiling using C++, expands to nothing.
128 Otherwise ends a section of code already begun by a C<L</START_EXTERN_C>>.
133 #undef START_EXTERN_C
137 # define EXTERN_C extern "C"
138 # define START_EXTERN_C EXTERN_C {
139 # define END_EXTERN_C }
141 # define START_EXTERN_C
142 # define END_EXTERN_C
143 # define EXTERN_C extern
146 /* Fallback definitions in case we don't have definitions from config.h.
147 This should only matter for systems that don't use Configure and
148 haven't been modified to define PERL_STATIC_INLINE yet.
150 #if !defined(PERL_STATIC_INLINE)
151 # ifdef HAS_STATIC_INLINE
152 # define PERL_STATIC_INLINE static inline
154 # define PERL_STATIC_INLINE static
159 =for apidoc_section $concurrency
160 =for apidoc AmU|void|dTHXa|PerlInterpreter * a
161 On threaded perls, set C<pTHX> to C<a>; on unthreaded perls, do nothing
163 =for apidoc AmU|void|dTHXoa|PerlInterpreter * a
164 Now a synonym for C<L</dTHXa>>.
170 # define tTHX PerlInterpreter*
171 # define pTHX tTHX my_perl PERL_UNUSED_DECL
172 # define aTHX my_perl
173 # define aTHXa(a) aTHX = (tTHX)a
174 # define dTHXa(a) pTHX = (tTHX)a
175 # define dTHX pTHX = PERL_GET_THX
188 # if defined(DEBUGGING) && !defined(PERL_TRACK_MEMPOOL)
189 # define PERL_TRACK_MEMPOOL
192 # undef PERL_TRACK_MEMPOOL
196 # define dTHX_DEBUGGING dTHX
198 # define dTHX_DEBUGGING dNOOP
201 #define STATIC static
204 /* Do not use these macros. They were part of PERL_OBJECT, which was an
205 * implementation of multiplicity using C++ objects. They have been left
206 * here solely for the sake of XS code which has incorrectly
209 * The only one Devel::PPPort handles is this; list it as deprecated
211 =for apidoc_section $concurrency
212 =for apidoc AmD|void|CPERLscope|void x
217 # define CPERLscope(x) x
218 # define CPERLarg void
221 # define PERL_OBJECT_THIS
222 # define _PERL_OBJECT_THIS
223 # define PERL_OBJECT_THIS_
224 # define CALL_FPTR(fptr) (*fptr)
225 # define MEMBER_TO_FPTR(name) name
226 #endif /* !PERL_CORE */
228 #define CALLRUNOPS PL_runops
230 #define CALLREGCOMP(sv, flags) Perl_pregcomp(aTHX_ (sv),(flags))
232 #define CALLREGCOMP_ENG(prog, sv, flags) (prog)->comp(aTHX_ sv, flags)
233 #define CALLREGEXEC(prog,stringarg,strend,strbeg,minend,sv,data,flags) \
234 RX_ENGINE(prog)->exec(aTHX_ (prog),(stringarg),(strend), \
235 (strbeg),(minend),(sv),(data),(flags))
236 #define CALLREG_INTUIT_START(prog,sv,strbeg,strpos,strend,flags,data) \
237 RX_ENGINE(prog)->intuit(aTHX_ (prog), (sv), (strbeg), (strpos), \
238 (strend),(flags),(data))
239 #define CALLREG_INTUIT_STRING(prog) \
240 RX_ENGINE(prog)->checkstr(aTHX_ (prog))
242 #define CALLREGFREE(prog) \
243 Perl_pregfree(aTHX_ (prog))
245 #define CALLREGFREE_PVT(prog) \
246 if(prog && RX_ENGINE(prog)) RX_ENGINE(prog)->rxfree(aTHX_ (prog))
248 #define CALLREG_NUMBUF_FETCH(rx,paren,usesv) \
249 RX_ENGINE(rx)->numbered_buff_FETCH(aTHX_ (rx),(paren),(usesv))
251 #define CALLREG_NUMBUF_STORE(rx,paren,value) \
252 RX_ENGINE(rx)->numbered_buff_STORE(aTHX_ (rx),(paren),(value))
254 #define CALLREG_NUMBUF_LENGTH(rx,sv,paren) \
255 RX_ENGINE(rx)->numbered_buff_LENGTH(aTHX_ (rx),(sv),(paren))
257 #define CALLREG_NAMED_BUFF_FETCH(rx, key, flags) \
258 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_FETCH))
260 #define CALLREG_NAMED_BUFF_STORE(rx, key, value, flags) \
261 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), (value), ((flags) | RXapif_STORE))
263 #define CALLREG_NAMED_BUFF_DELETE(rx, key, flags) \
264 RX_ENGINE(rx)->named_buff(aTHX_ (rx),(key), NULL, ((flags) | RXapif_DELETE))
266 #define CALLREG_NAMED_BUFF_CLEAR(rx, flags) \
267 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_CLEAR))
269 #define CALLREG_NAMED_BUFF_EXISTS(rx, key, flags) \
270 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_EXISTS))
272 #define CALLREG_NAMED_BUFF_FIRSTKEY(rx, flags) \
273 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), NULL, ((flags) | RXapif_FIRSTKEY))
275 #define CALLREG_NAMED_BUFF_NEXTKEY(rx, lastkey, flags) \
276 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), (lastkey), ((flags) | RXapif_NEXTKEY))
278 #define CALLREG_NAMED_BUFF_SCALAR(rx, flags) \
279 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_SCALAR))
281 #define CALLREG_NAMED_BUFF_COUNT(rx) \
282 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, RXapif_REGNAMES_COUNT)
284 #define CALLREG_NAMED_BUFF_ALL(rx, flags) \
285 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, flags)
287 #define CALLREG_PACKAGE(rx) \
288 RX_ENGINE(rx)->qr_package(aTHX_ (rx))
290 #if defined(USE_ITHREADS)
291 # define CALLREGDUPE(prog,param) \
292 Perl_re_dup(aTHX_ (prog),(param))
294 # define CALLREGDUPE_PVT(prog,param) \
295 (prog ? RX_ENGINE(prog)->dupe(aTHX_ (prog),(param)) \
299 /* some compilers impersonate gcc */
300 #if defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER)
301 # define PERL_IS_GCC 1
304 #define PERL_GCC_VERSION_GE(major,minor,patch) \
305 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \
306 >= ((100000 * (major)) + (1000 * (minor)) + (patch)))
307 #define PERL_GCC_VERSION_GT(major,minor,patch) \
308 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \
309 > ((100000 * (major)) + (1000 * (minor)) + (patch)))
310 #define PERL_GCC_VERSION_LE(major,minor,patch) \
311 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \
312 <= ((100000 * (major)) + (1000 * (minor)) + (patch)))
313 #define PERL_GCC_VERSION_LT(major,minor,patch) \
314 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \
315 < ((100000 * (major)) + (1000 * (minor)) + (patch)))
317 /* In case Configure was not used (we are using a "canned config"
318 * such as Win32, or a cross-compilation setup, for example) try going
319 * by the gcc major and minor versions. One useful URL is
320 * http://www.ohse.de/uwe/articles/gcc-attributes.html,
321 * but contrary to this information warn_unused_result seems
322 * not to be in gcc 3.3.5, at least. --jhi
323 * Also, when building extensions with an installed perl, this allows
324 * the user to upgrade gcc and get the right attributes, rather than
325 * relying on the list generated at Configure time. --AD
326 * Set these up now otherwise we get confused when some of the <*thread.h>
327 * includes below indirectly pull in <perlio.h> (which needs to know if we
328 * have HASATTRIBUTE_FORMAT).
332 # if defined __GNUC__ && !defined(__INTEL_COMPILER)
333 # if PERL_GCC_VERSION_GE(3,1,0)
334 # define HASATTRIBUTE_DEPRECATED
336 # if PERL_GCC_VERSION_GE(3,0,0) /* XXX Verify this version */
337 # define HASATTRIBUTE_FORMAT
338 # if defined __MINGW32__
339 # define PRINTF_FORMAT_NULL_OK
342 # if PERL_GCC_VERSION_GE(3,0,0)
343 # define HASATTRIBUTE_MALLOC
345 # if PERL_GCC_VERSION_GE(3,3,0)
346 # define HASATTRIBUTE_NONNULL
348 # if PERL_GCC_VERSION_GE(2,5,0)
349 # define HASATTRIBUTE_NORETURN
351 # if PERL_GCC_VERSION_GE(3,0,0)
352 # define HASATTRIBUTE_PURE
354 # if PERL_GCC_VERSION_GE(3,4,0)
355 # define HASATTRIBUTE_UNUSED
357 # if __GNUC__ == 3 && __GNUC_MINOR__ == 3 && !defined(__cplusplus)
358 # define HASATTRIBUTE_UNUSED /* gcc-3.3, but not g++-3.3. */
360 # if PERL_GCC_VERSION_GE(3,4,0)
361 # define HASATTRIBUTE_WARN_UNUSED_RESULT
363 /* always_inline is buggy in gcc <= 4.6 and causes compilation errors */
364 # if PERL_GCC_VERSION_GE(4,7,0)
365 # define HASATTRIBUTE_ALWAYS_INLINE
367 # if PERL_GCC_VERSION_GE(3,3,0)
368 # define HASATTRIBUTE_VISIBILITY
371 #endif /* #ifndef PERL_MICRO */
373 #ifdef HASATTRIBUTE_DEPRECATED
374 # define __attribute__deprecated__ __attribute__((deprecated))
376 #ifdef HASATTRIBUTE_FORMAT
377 # define __attribute__format__(x,y,z) __attribute__((format(x,y,z)))
379 #ifdef HASATTRIBUTE_MALLOC
380 # define __attribute__malloc__ __attribute__((__malloc__))
382 #ifdef HASATTRIBUTE_NONNULL
383 # define __attribute__nonnull__(a) __attribute__((nonnull(a)))
385 #ifdef HASATTRIBUTE_NORETURN
386 # define __attribute__noreturn__ __attribute__((noreturn))
388 #ifdef HASATTRIBUTE_PURE
389 # define __attribute__pure__ __attribute__((pure))
391 #ifdef HASATTRIBUTE_UNUSED
392 # define __attribute__unused__ __attribute__((unused))
394 #ifdef HASATTRIBUTE_WARN_UNUSED_RESULT
395 # define __attribute__warn_unused_result__ __attribute__((warn_unused_result))
397 #ifdef HASATTRIBUTE_ALWAYS_INLINE
398 /* always_inline is buggy in gcc <= 4.6 and causes compilation errors */
399 # if !defined(PERL_IS_GCC) || PERL_GCC_VERSION_GE(4,7,0)
400 # define __attribute__always_inline__ __attribute__((always_inline))
403 #if defined(HASATTRIBUTE_VISIBILITY) && !defined(_WIN32)
404 /* On Windows, instead of this, we use __declspec(dllexport) and a .def file */
405 # define __attribute__visibility__(x) __attribute__((visibility(x)))
408 /* If we haven't defined the attributes yet, define them to blank. */
409 #ifndef __attribute__deprecated__
410 # define __attribute__deprecated__
412 #ifndef __attribute__format__
413 # define __attribute__format__(x,y,z)
415 #ifndef __attribute__malloc__
416 # define __attribute__malloc__
418 #ifndef __attribute__nonnull__
419 # define __attribute__nonnull__(a)
421 #ifndef __attribute__noreturn__
422 # define __attribute__noreturn__
424 #ifndef __attribute__pure__
425 # define __attribute__pure__
427 #ifndef __attribute__unused__
428 # define __attribute__unused__
430 #ifndef __attribute__warn_unused_result__
431 # define __attribute__warn_unused_result__
433 #ifndef __attribute__always_inline__
434 # define __attribute__always_inline__
436 #ifndef __attribute__visibility__
437 # define __attribute__visibility__(x)
440 /* Some OS warn on NULL format to printf */
441 #ifdef PRINTF_FORMAT_NULL_OK
442 # define __attribute__format__null_ok__(x,y,z) __attribute__format__(x,y,z)
444 # define __attribute__format__null_ok__(x,y,z)
448 * Because of backward compatibility reasons the PERL_UNUSED_DECL
449 * cannot be changed from postfix to PERL_UNUSED_DECL(x). Sigh.
451 * Note that there are C compilers such as MetroWerks CodeWarrior
452 * which do not have an "inlined" way (like the gcc __attribute__) of
453 * marking unused variables (they need e.g. a #pragma) and therefore
454 * cpp macros like PERL_UNUSED_DECL cannot work for this purpose, even
455 * if it were PERL_UNUSED_DECL(x), which it cannot be (see above).
457 =for apidoc_section $directives
458 =for apidoc AmnU||PERL_UNUSED_DECL
459 Tells the compiler that the parameter in the function prototype just before it
460 is not necessarily expected to be used in the function. Not that many
461 compilers understand this, so this should only be used in cases where
462 C<L</PERL_UNUSED_ARG>> can't conveniently be used.
469 Perl_perly_sighandler(int sig, Siginfo_t *sip PERL_UNUSED_DECL,
470 void *uap PERL_UNUSED_DECL, bool safe)
477 #ifndef PERL_UNUSED_DECL
478 # define PERL_UNUSED_DECL __attribute__unused__
482 * for silencing unused variables that are actually used most of the time,
483 * but we cannot quite get rid of, such as "ax" in PPCODE+noargs xsubs,
484 * or variables/arguments that are used only in certain configurations.
486 =for apidoc Am;||PERL_UNUSED_ARG|void x
487 This is used to suppress compiler warnings that a parameter to a function is
488 not used. This situation can arise, for example, when a parameter is needed
489 under some configuration conditions, but not others, so that C preprocessor
490 conditional compilation causes it be used just some times.
492 =for apidoc Amn;||PERL_UNUSED_CONTEXT
493 This is used to suppress compiler warnings that the thread context parameter to
494 a function is not used. This situation can arise, for example, when a
495 C preprocessor conditional compilation causes it be used just some times.
497 =for apidoc Am;||PERL_UNUSED_VAR|void x
498 This is used to suppress compiler warnings that the variable I<x> is not used.
499 This situation can arise, for example, when a C preprocessor conditional
500 compilation causes it be used just some times.
504 #ifndef PERL_UNUSED_ARG
505 # define PERL_UNUSED_ARG(x) ((void)sizeof(x))
507 #ifndef PERL_UNUSED_VAR
508 # define PERL_UNUSED_VAR(x) ((void)sizeof(x))
511 #if defined(USE_ITHREADS)
512 # define PERL_UNUSED_CONTEXT PERL_UNUSED_ARG(my_perl)
514 # define PERL_UNUSED_CONTEXT
517 /* gcc (-ansi) -pedantic doesn't allow gcc statement expressions,
518 * g++ allows them but seems to have problems with them
519 * (insane errors ensue).
520 * g++ does not give insane errors now (RMB 2008-01-30, gcc 4.2.2).
522 #if defined(PERL_GCC_PEDANTIC) || \
523 (defined(__GNUC__) && defined(__cplusplus) && \
524 (PERL_GCC_VERSION_LT(4,2,0)))
525 # ifndef PERL_GCC_BRACE_GROUPS_FORBIDDEN
526 # define PERL_GCC_BRACE_GROUPS_FORBIDDEN
532 =for apidoc Am||PERL_UNUSED_RESULT|void x
534 This macro indicates to discard the return value of the function call inside
537 PERL_UNUSED_RESULT(foo(a, b))
539 The main reason for this is that the combination of C<gcc -Wunused-result>
540 (part of C<-Wall>) and the C<__attribute__((warn_unused_result))> cannot
541 be silenced with casting to C<void>. This causes trouble when the system
542 header files use the attribute.
544 Use C<PERL_UNUSED_RESULT> sparingly, though, since usually the warning
545 is there for a good reason: you might lose success/failure information,
546 or leak resources, or changes in resources.
548 But sometimes you just want to ignore the return value, I<e.g.>, on
549 codepaths soon ending up in abort, or in "best effort" attempts,
550 or in situations where there is no good way to handle failures.
552 Sometimes C<PERL_UNUSED_RESULT> might not be the most natural way:
553 another possibility is that you can capture the return value
554 and use C<L</PERL_UNUSED_VAR>> on that.
558 The __typeof__() is used instead of typeof() since typeof() is not
559 available under strict ISO C, and because of compilers masquerading
560 as gcc (clang and icc), we want exactly the gcc extension
561 __typeof__ and nothing else.
564 #ifndef PERL_UNUSED_RESULT
565 # if defined(__GNUC__) && defined(HASATTRIBUTE_WARN_UNUSED_RESULT)
566 # define PERL_UNUSED_RESULT(v) STMT_START { __typeof__(v) z = (v); (void)sizeof(z); } STMT_END
568 # define PERL_UNUSED_RESULT(v) ((void)(v))
572 /* on gcc (and clang), specify that a warning should be temporarily
575 * GCC_DIAG_IGNORE_DECL(-Wmultichar);
577 * GCC_DIAG_RESTORE_DECL;
579 * based on http://dbp-consulting.com/tutorials/SuppressingGCCWarnings.html
581 * Note that "pragma GCC diagnostic push/pop" was added in GCC 4.6, Mar 2011;
582 * clang only pretends to be GCC 4.2, but still supports push/pop.
584 * Note on usage: all macros must be used at a place where a declaration
585 * or statement can occur, i.e., not in the middle of an expression.
586 * *_DIAG_IGNORE() and *_DIAG_RESTORE can be used in any such place, but
587 * must be used without a following semicolon. *_DIAG_IGNORE_DECL() and
588 * *_DIAG_RESTORE_DECL must be used with a following semicolon, and behave
589 * syntactically as declarations (like dNOOP). *_DIAG_IGNORE_STMT()
590 * and *_DIAG_RESTORE_STMT must be used with a following semicolon,
591 * and behave syntactically as statements (like NOOP).
595 #if defined(__clang__) || defined(__clang) || PERL_GCC_VERSION_GE(4,6,0)
596 # define GCC_DIAG_PRAGMA(x) _Pragma (#x)
597 /* clang has "clang diagnostic" pragmas, but also understands gcc. */
598 # define GCC_DIAG_IGNORE(x) _Pragma("GCC diagnostic push") \
599 GCC_DIAG_PRAGMA(GCC diagnostic ignored #x)
600 # define GCC_DIAG_RESTORE _Pragma("GCC diagnostic pop")
602 # define GCC_DIAG_IGNORE(w)
603 # define GCC_DIAG_RESTORE
605 #define GCC_DIAG_IGNORE_DECL(x) GCC_DIAG_IGNORE(x) dNOOP
606 #define GCC_DIAG_RESTORE_DECL GCC_DIAG_RESTORE dNOOP
607 #define GCC_DIAG_IGNORE_STMT(x) GCC_DIAG_IGNORE(x) NOOP
608 #define GCC_DIAG_RESTORE_STMT GCC_DIAG_RESTORE NOOP
609 /* for clang specific pragmas */
610 #if defined(__clang__) || defined(__clang)
611 # define CLANG_DIAG_PRAGMA(x) _Pragma (#x)
612 # define CLANG_DIAG_IGNORE(x) _Pragma("clang diagnostic push") \
613 CLANG_DIAG_PRAGMA(clang diagnostic ignored #x)
614 # define CLANG_DIAG_RESTORE _Pragma("clang diagnostic pop")
616 # define CLANG_DIAG_IGNORE(w)
617 # define CLANG_DIAG_RESTORE
619 #define CLANG_DIAG_IGNORE_DECL(x) CLANG_DIAG_IGNORE(x) dNOOP
620 #define CLANG_DIAG_RESTORE_DECL CLANG_DIAG_RESTORE dNOOP
621 #define CLANG_DIAG_IGNORE_STMT(x) CLANG_DIAG_IGNORE(x) NOOP
622 #define CLANG_DIAG_RESTORE_STMT CLANG_DIAG_RESTORE NOOP
624 #if defined(_MSC_VER)
625 # define MSVC_DIAG_IGNORE(x) __pragma(warning(push)) \
626 __pragma(warning(disable : x))
627 # define MSVC_DIAG_RESTORE __pragma(warning(pop))
629 # define MSVC_DIAG_IGNORE(x)
630 # define MSVC_DIAG_RESTORE
632 #define MSVC_DIAG_IGNORE_DECL(x) MSVC_DIAG_IGNORE(x) dNOOP
633 #define MSVC_DIAG_RESTORE_DECL MSVC_DIAG_RESTORE dNOOP
634 #define MSVC_DIAG_IGNORE_STMT(x) MSVC_DIAG_IGNORE(x) NOOP
635 #define MSVC_DIAG_RESTORE_STMT MSVC_DIAG_RESTORE NOOP
638 =for apidoc Amn;||NOOP
639 Do nothing; typically used as a placeholder to replace something that used to
642 =for apidoc Amn;||dNOOP
643 Declare nothing; typically used as a placeholder to replace something that used
644 to declare something. Works on compilers that require declarations before any
649 #define NOOP /*EMPTY*/(void)0
650 #define dNOOP struct Perl___notused_struct
653 /* Don't bother defining tTHX ; using it outside
654 * code guarded by MULTIPLICITY is an error.
660 # define aTHXa(a) NOOP
661 # define dTHXa(a) dNOOP
676 =for apidoc_section $concurrency
677 =for apidoc AmnU||dVAR
678 This is now a synonym for dNOOP: declare nothing
680 =for apidoc_section $XS
681 =for apidoc Amn;||dMY_CXT_SV
682 Now a placeholder that declares nothing
688 /* Backwards compatibility macro for XS code. It used to be part of the
689 * PERL_GLOBAL_STRUCT(_PRIVATE) feature, which no longer exists */
692 /* these are only defined for compatibility; should not be used internally.
694 # define dMY_CXT_SV dNOOP
697 # define pTHXo_ pTHX_
699 # define aTHXo_ aTHX_
701 # define dTHXoa(x) dTHXa(x)
706 # define pTHXx PerlInterpreter *my_perl
707 # define pTHXx_ pTHXx,
708 # define aTHXx my_perl
709 # define aTHXx_ aTHXx,
713 /* Under PERL_IMPLICIT_SYS (used in Windows for fork emulation)
714 * PerlIO_foo() expands to PL_StdIO->pFOO(PL_StdIO, ...).
715 * dTHXs is therefore needed for all functions using PerlIO_foo(). */
716 #ifdef PERL_IMPLICIT_SYS
722 #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__cplusplus)
723 # ifndef PERL_USE_GCC_BRACE_GROUPS
724 # define PERL_USE_GCC_BRACE_GROUPS
729 =for apidoc_section $directives
730 =for apidoc AmnUu|void|STMT_END
731 =for apidoc_item | |STMT_START
733 These allow a series of statements in a macro to be used as a single statement,
736 if (x) STMT_START { ... } STMT_END else ...
738 Note that you can't return a value out of this construct and cannot use it as
739 an operand to the comma operator, which limit its utility. If you need
740 those features, instead use C language C<static inline> functions.
741 But those won't work where the types of the inputs can vary depending on where
742 called from; you'd have to create a separate function for each combination of
745 Subtle bugs can occur due to this being a macro with names evaluated in
746 the context of the caller, unlike a function. These bugs can be eliminated by
747 treating this more like a function. This means that you must only use
748 variables inside it that are either formal parameters or are declared
749 internally within the construct. Thus
755 B<All> references to outside-the-construct variables must be through formal
760 All formal parameters should be used only once. If a value needs to be used in
761 more than one place, instead declare a variable internally, initialized with
762 the formal parameter. Then use that internal variable freely. For example
764 #define warn_if_odd(n) \
769 my_warn(aTHX_ "%d is odd\n", n_); \
773 This prevents issues when the macro is called with a parameter with side
776 Note that the internal variable must have a different name than the formal
777 parameter one. Using a trailing underscore is legal in C, and unobtrusive.
778 C<But> see below for why you should choose a different naming convention if
779 there are multiple parameters.
783 If there are multiple formal parameters, the names of the internal copies need
784 to be something that won't clash with any names outside the macro. This
785 prevents subtle bugs when the caller uses one parameter in terms of another.
787 #define my_best_shot(a, b) \
789 UV my_best_shot_a = a; \
790 UV my_best_shot_b = b; \
798 my_best_shot(a + b + ix, a - b - ix);
800 Without the declarations, the macro call at the end of the example would be
803 This example uses the macro name as part of each variable name that corresponds
804 to a formal parameter. If this convention is followed everywhere, there is no
805 possibility of name collisions.
807 Note that the C<ix> within the construct doesn't interfere with the outside
808 C<ix>, but only because we have declared and initialized variables that are
809 copies of all the formal parameters.
811 Also note that if you forget and use plain C<a> or C<b> in some places, things
812 may well compile, and have subtle run-time bugs.
814 For a concrete example, see L<https://perlmonks.org/?node_id=11144355>.
818 Pass in the type for any declarations if it isn't known at macro definition
819 time. Suppose that the parameters to C<my_best_shot> in the example above
820 didn't have to be UV. This can be handled by changing the signature, something
823 #define my_best_shot(a, a_type, b, b_type) STMT_START { \
825 a_type my_best_shot_a = a; \
826 b_type my_best_shot_b = b; \
834 my_best_shot(a + b + ix, int, a - b - ix, long);
836 You are out of luck if the signature can't be changed to include the types.
837 Best then is to document that the macro cannot safely be called with parameters
838 with side effects. And any internally-declared variables should have names
839 that won't clash with any outside names. C<ix> should then be
840 C<my_best_shot_ix>, for example.
844 =for apidoc_section $genconfig
845 =for apidoc Amn#||PERL_USE_GCC_BRACE_GROUPS
847 This C pre-processor value, if defined, indicates that it is permissible to use
848 the GCC brace groups extension. However, use of this extension is DISCOURAGED.
849 Use a C<static inline> function instead.
851 The extension, of the form
855 turns the block consisting of I<statement ...> into an expression with a
856 value, unlike plain C language blocks. This can present optimization
857 possibilities, B<BUT>, unless you know for sure that this will never be
858 compiled without this extension being available and not forbidden, you need to
859 specify an alternative. Thus two code paths have to be maintained, which can
860 get out-of-sync. All these issues are solved by using a C<static inline>
863 Perl can be configured to not use this feature by passing the parameter
864 C<-Accflags=-DPERL_GCC_BRACE_GROUPS_FORBIDDEN> to F<Configure>.
866 =for apidoc Amnh#||PERL_GCC_BRACE_GROUPS_FORBIDDEN
872 #ifdef PERL_USE_GCC_BRACE_GROUPS
882 Trying to select a version that gives no warnings...
884 #if !(defined(STMT_START) && defined(STMT_END))
885 # define STMT_START do
886 # define STMT_END while (0)
889 #ifndef BYTEORDER /* Should never happen -- byteorder is in config.h */
890 # define BYTEORDER 0x1234
894 =for apidoc_section $genconfig
895 =for apidoc Amn#||ASCIIish
897 A preprocessor symbol that is defined iff the system is an ASCII platform; this
898 symbol would not be defined on C<L</EBCDIC>> platforms.
902 #if 'A' == 65 && 'I' == 73 && 'J' == 74 && 'Z' == 90
909 * The following contortions are brought to you on behalf of all the
910 * standards, semi-standards, de facto standards, not-so-de-facto standards
911 * of the world, as well as all the other botches anyone ever thought of.
912 * The basic theory is that if we work hard enough here, the rest of the
913 * code can be a lot prettier. Well, so much for theory. Sorry, Henry...
916 /* define this once if either system, instead of cluttering up the src */
921 /* These exist only for back-compat with XS modules. */
924 #define CAN_PROTOTYPE
931 /* By compiling a perl with -DNO_TAINT_SUPPORT or -DSILENT_NO_TAINT_SUPPORT,
932 * you get a perl without taint support, but doubtlessly with a lesser
933 * degree of support. Do not do so unless you know exactly what it means
934 * technically, have a good reason to do so, and know exactly how the
935 * perl will be used. perls with -DSILENT_NO_TAINT_SUPPORT are considered
936 * a potential security risk due to flat out ignoring the security-relevant
937 * taint flags. This being said, a perl without taint support compiled in
938 * has marginal run-time performance benefits.
939 * SILENT_NO_TAINT_SUPPORT implies NO_TAINT_SUPPORT.
940 * SILENT_NO_TAINT_SUPPORT is the same as NO_TAINT_SUPPORT except it
941 * silently ignores -t/-T instead of throwing an exception.
943 * DANGER! Using NO_TAINT_SUPPORT or SILENT_NO_TAINT_SUPPORT
944 * voids your nonexistent warranty!
946 #if defined(SILENT_NO_TAINT_SUPPORT) && !defined(NO_TAINT_SUPPORT)
947 # define NO_TAINT_SUPPORT 1
950 /* NO_TAINT_SUPPORT can be set to transform virtually all taint-related
951 * operations into no-ops for a very modest speed-up. Enable only if you
952 * know what you're doing: tests and CPAN modules' tests are bound to fail.
954 #ifdef NO_TAINT_SUPPORT
956 # define TAINT_NOT NOOP
957 # define TAINT_IF(c) NOOP
958 # define TAINT_ENV() NOOP
959 # define TAINT_PROPER(s) NOOP
960 # define TAINT_set(s) NOOP
962 # define TAINTING_get 0
963 # define TAINTING_set(s) NOOP
964 # define TAINT_WARN_get 0
965 # define TAINT_WARN_set(s) NOOP
969 =for apidoc_section $tainting
970 =for apidoc Cm|void|TAINT
972 If we aren't in taint checking mode, do nothing;
973 otherwise indicate to L</C<TAINT_set>> and L</C<TAINT_PROPER>> that some
974 unspecified element is tainted.
976 =for apidoc Cm|void|TAINT_NOT
978 Remove any taintedness previously set by, I<e.g.>, C<TAINT>.
980 =for apidoc Cm|void|TAINT_IF|bool c
982 If C<c> evaluates to true, call L</C<TAINT>> to indicate that something is
983 tainted; otherwise do nothing.
985 =for apidoc Cmn|void|TAINT_ENV
987 Looks at several components of L<C<%ENV>|perlvar/%ENV> for taintedness, and
988 calls L</C<taint_proper>> if any are tainted. The components it searches are
989 things like C<$PATH>.
991 =for apidoc Cm|void|TAINT_PROPER|const char * s
993 If no element is tainted, do nothing;
994 otherwise output a message (containing C<s>) that indicates there is a
995 tainting violation. If such violations are fatal, it croaks.
997 =for apidoc Cm|void|TAINT_set|bool s
999 If C<s> is true, L</C<TAINT_get>> returns true;
1000 If C<s> is false, L</C<TAINT_get>> returns false;
1002 =for apidoc Cm|bool|TAINT_get
1004 Returns a boolean as to whether some element is tainted or not.
1006 =for apidoc Cm|bool|TAINTING_get
1008 Returns a boolean as to whether taint checking is enabled or not.
1010 =for apidoc Cm|void|TAINTING_set|bool s
1012 Turn taint checking mode off/on
1014 =for apidoc Cm|bool|TAINT_WARN_get
1016 Returns false if tainting violations are fatal;
1017 Returns true if they're just warnings
1019 =for apidoc Cm|void|TAINT_WARN_set|bool s
1021 C<s> being true indicates L</C<TAINT_WARN_get>> should return that tainting
1022 violations are just warnings
1024 C<s> being false indicates L</C<TAINT_WARN_get>> should return that tainting
1025 violations are fatal.
1029 /* Set to tainted if we are running under tainting mode */
1030 # define TAINT (PL_tainted = PL_tainting)
1032 # define TAINT_NOT (PL_tainted = FALSE) /* Untaint */
1033 # define TAINT_IF(c) if (UNLIKELY(c)) { TAINT; } /* Conditionally taint */
1034 # define TAINT_ENV() if (UNLIKELY(PL_tainting)) { taint_env(); }
1035 /* croak or warn if tainting */
1036 # define TAINT_PROPER(s) if (UNLIKELY(PL_tainting)) { \
1037 taint_proper(NULL, s); \
1039 # define TAINT_set(s) (PL_tainted = cBOOL(s))
1040 # define TAINT_get (cBOOL(UNLIKELY(PL_tainted))) /* Is something tainted? */
1041 # define TAINTING_get (cBOOL(UNLIKELY(PL_tainting)))
1042 # define TAINTING_set(s) (PL_tainting = cBOOL(s))
1043 # define TAINT_WARN_get (PL_taint_warn)
1044 # define TAINT_WARN_set(s) (PL_taint_warn = cBOOL(s))
1047 /* flags used internally only within pp_subst and pp_substcont */
1049 # define SUBST_TAINT_STR 1 /* string tainted */
1050 # define SUBST_TAINT_PAT 2 /* pattern tainted */
1051 # define SUBST_TAINT_REPL 4 /* replacement tainted */
1052 # define SUBST_TAINT_RETAINT 8 /* use re'taint' in scope */
1053 # define SUBST_TAINT_BOOLRET 16 /* return is boolean (don't taint) */
1056 /* XXX All process group stuff is handled in pp_sys.c. Should these
1057 defines move there? If so, I could simplify this a lot. --AD 9/96.
1059 /* Process group stuff changed from traditional BSD to POSIX.
1060 perlfunc.pod documents the traditional BSD-style syntax, so we'll
1061 try to preserve that, if possible.
1064 # define BSD_SETPGRP(pid, pgrp) setpgid((pid), (pgrp))
1065 #elif defined(HAS_SETPGRP) && defined(USE_BSD_SETPGRP)
1066 # define BSD_SETPGRP(pid, pgrp) setpgrp((pid), (pgrp))
1067 #elif defined(HAS_SETPGRP2)
1068 # define BSD_SETPGRP(pid, pgrp) setpgrp2((pid), (pgrp))
1070 #if defined(BSD_SETPGRP) && !defined(HAS_SETPGRP)
1071 # define HAS_SETPGRP /* Well, effectively it does . . . */
1074 /* getpgid isn't POSIX, but at least Solaris and Linux have it, and it makes
1075 our life easier :-) so we'll try it.
1078 # define BSD_GETPGRP(pid) getpgid((pid))
1079 #elif defined(HAS_GETPGRP) && defined(USE_BSD_GETPGRP)
1080 # define BSD_GETPGRP(pid) getpgrp((pid))
1081 #elif defined(HAS_GETPGRP2)
1082 # define BSD_GETPGRP(pid) getpgrp2((pid))
1084 #if defined(BSD_GETPGRP) && !defined(HAS_GETPGRP)
1085 # define HAS_GETPGRP /* Well, effectively it does . . . */
1088 /* These are not exact synonyms, since setpgrp() and getpgrp() may
1089 have different behaviors, but perl.h used to define USE_BSDPGRP
1090 (prior to 5.003_05) so some extension might depend on it.
1092 #if defined(USE_BSD_SETPGRP) || defined(USE_BSD_GETPGRP)
1093 # ifndef USE_BSDPGRP
1094 # define USE_BSDPGRP
1098 /* This define exists only for compatibility. It used to mean "my_setenv and
1099 * friends should use setenv/putenv, instead of manipulating environ directly",
1100 * which is now always the case. It's still defined to prevent XS modules from
1101 * using the no longer existing PL_use_safe_putenv variable.
1103 #define PERL_USE_SAFE_PUTENV
1105 /* HP-UX 10.X CMA (Common Multithreaded Architecture) insists that
1106 pthread.h must be included before all other header files.
1108 #if defined(USE_ITHREADS) && defined(PTHREAD_H_FIRST) && defined(I_PTHREAD)
1109 # include <pthread.h>
1112 #include <sys/types.h>
1118 # include <stdarg.h>
1121 # include <stdint.h>
1128 #ifdef METHOD /* Defined by OSF/1 v3.0 by ctype.h */
1137 # include <locale.h>
1140 #ifdef NEED_XLOCALE_H
1141 # include <xlocale.h>
1144 /* If not forbidden, we enable locale handling if either 1) the POSIX 2008
1145 * functions are available, or 2) just the setlocale() function. This logic is
1146 * repeated in t/loc_tools.pl and makedef.pl; The three should be kept in
1148 #if ! defined(NO_LOCALE)
1150 # if ! defined(NO_POSIX_2008_LOCALE) \
1151 && defined(HAS_NEWLOCALE) \
1152 && defined(HAS_USELOCALE) \
1153 && defined(HAS_DUPLOCALE) \
1154 && defined(HAS_FREELOCALE) \
1155 && defined(LC_ALL_MASK)
1157 /* For simplicity, the code is written to assume that any platform advanced
1158 * enough to have the Posix 2008 locale functions has LC_ALL. The final
1159 * test above makes sure that assumption is valid */
1161 # define HAS_POSIX_2008_LOCALE
1163 # elif defined(HAS_SETLOCALE)
1169 # define HAS_SKIP_LOCALE_INIT /* Solely for XS code to test for this
1171 # if !defined(NO_LOCALE_COLLATE) && defined(LC_COLLATE) \
1172 && defined(HAS_STRXFRM)
1173 # define USE_LOCALE_COLLATE
1175 # if !defined(NO_LOCALE_CTYPE) && defined(LC_CTYPE)
1176 # define USE_LOCALE_CTYPE
1178 # if !defined(NO_LOCALE_NUMERIC) && defined(LC_NUMERIC)
1179 # define USE_LOCALE_NUMERIC
1181 # if !defined(NO_LOCALE_MESSAGES) && defined(LC_MESSAGES)
1182 # define USE_LOCALE_MESSAGES
1184 # if !defined(NO_LOCALE_MONETARY) && defined(LC_MONETARY)
1185 # define USE_LOCALE_MONETARY
1187 # if !defined(NO_LOCALE_TIME) && defined(LC_TIME)
1188 # define USE_LOCALE_TIME
1190 # if !defined(NO_LOCALE_ADDRESS) && defined(LC_ADDRESS)
1191 # define USE_LOCALE_ADDRESS
1193 # if !defined(NO_LOCALE_IDENTIFICATION) && defined(LC_IDENTIFICATION)
1194 # define USE_LOCALE_IDENTIFICATION
1196 # if !defined(NO_LOCALE_MEASUREMENT) && defined(LC_MEASUREMENT)
1197 # define USE_LOCALE_MEASUREMENT
1199 # if !defined(NO_LOCALE_PAPER) && defined(LC_PAPER)
1200 # define USE_LOCALE_PAPER
1202 # if !defined(NO_LOCALE_TELEPHONE) && defined(LC_TELEPHONE)
1203 # define USE_LOCALE_TELEPHONE
1205 # if !defined(NO_LOCALE_SYNTAX) && defined(LC_SYNTAX)
1206 # define USE_LOCALE_SYNTAX
1208 # if !defined(NO_LOCALE_TOD) && defined(LC_TOD)
1209 # define USE_LOCALE_TOD
1212 /* Now create LC_foo_INDEX_ #defines for just those categories on this system */
1213 # ifdef USE_LOCALE_NUMERIC
1214 # define LC_NUMERIC_INDEX_ 0
1215 # define PERL_DUMMY_NUMERIC_ LC_NUMERIC_INDEX_
1217 # define PERL_DUMMY_NUMERIC_ -1
1219 # ifdef USE_LOCALE_CTYPE
1220 # define LC_CTYPE_INDEX_ PERL_DUMMY_NUMERIC_ + 1
1221 # define PERL_DUMMY_CTYPE_ LC_CTYPE_INDEX_
1223 # define PERL_DUMMY_CTYPE_ PERL_DUMMY_NUMERIC_
1225 # ifdef USE_LOCALE_COLLATE
1226 # define LC_COLLATE_INDEX_ PERL_DUMMY_CTYPE_ + 1
1227 # define PERL_DUMMY_COLLATE_ LC_COLLATE_INDEX_
1229 # define PERL_DUMMY_COLLATE_ PERL_DUMMY_CTYPE_
1231 # ifdef USE_LOCALE_TIME
1232 # define LC_TIME_INDEX_ PERL_DUMMY_COLLATE_ + 1
1233 # define PERL_DUMMY_TIME_ LC_TIME_INDEX_
1235 # define PERL_DUMMY_TIME_ PERL_DUMMY_COLLATE_
1237 # ifdef USE_LOCALE_MESSAGES
1238 # define LC_MESSAGES_INDEX_ PERL_DUMMY_TIME_ + 1
1239 # define PERL_DUMMY_MESSAGES_ LC_MESSAGES_INDEX_
1241 # define PERL_DUMMY_MESSAGES_ PERL_DUMMY_TIME_
1243 # ifdef USE_LOCALE_MONETARY
1244 # define LC_MONETARY_INDEX_ PERL_DUMMY_MESSAGES_ + 1
1245 # define PERL_DUMMY_MONETARY_ LC_MONETARY_INDEX_
1247 # define PERL_DUMMY_MONETARY_ PERL_DUMMY_MESSAGES_
1249 # ifdef USE_LOCALE_ADDRESS
1250 # define LC_ADDRESS_INDEX_ PERL_DUMMY_MONETARY_ + 1
1251 # define PERL_DUMMY_ADDRESS_ LC_ADDRESS_INDEX_
1253 # define PERL_DUMMY_ADDRESS_ PERL_DUMMY_MONETARY_
1255 # ifdef USE_LOCALE_IDENTIFICATION
1256 # define LC_IDENTIFICATION_INDEX_ PERL_DUMMY_ADDRESS_ + 1
1257 # define PERL_DUMMY_IDENTIFICATION_ LC_IDENTIFICATION_INDEX_
1259 # define PERL_DUMMY_IDENTIFICATION_ PERL_DUMMY_ADDRESS_
1261 # ifdef USE_LOCALE_MEASUREMENT
1262 # define LC_MEASUREMENT_INDEX_ PERL_DUMMY_IDENTIFICATION_ + 1
1263 # define PERL_DUMMY_MEASUREMENT_ LC_MEASUREMENT_INDEX_
1265 # define PERL_DUMMY_MEASUREMENT_ PERL_DUMMY_IDENTIFICATION_
1267 # ifdef USE_LOCALE_PAPER
1268 # define LC_PAPER_INDEX_ PERL_DUMMY_MEASUREMENT_ + 1
1269 # define PERL_DUMMY_PAPER_ LC_PAPER_INDEX_
1271 # define PERL_DUMMY_PAPER_ PERL_DUMMY_MEASUREMENT_
1273 # ifdef USE_LOCALE_TELEPHONE
1274 # define LC_TELEPHONE_INDEX_ PERL_DUMMY_PAPER_ + 1
1275 # define PERL_DUMMY_TELEPHONE_ LC_TELEPHONE_INDEX_
1277 # define PERL_DUMMY_TELEPHONE_ PERL_DUMMY_PAPER_
1279 # ifdef USE_LOCALE_SYNTAX
1280 # define LC_SYNTAX_INDEX_ PERL_DUMMY_TELEPHONE_ + 1
1281 # define PERL_DUMMY_SYNTAX_ LC_SYNTAX_INDEX_
1283 # define PERL_DUMMY_SYNTAX_ PERL_DUMMY_TELEPHONE_
1285 # ifdef USE_LOCALE_TOD
1286 # define LC_TOD_INDEX_ PERL_DUMMY_SYNTAX_ + 1
1287 # define PERL_DUMMY_TOD_ LC_TOD_INDEX_
1289 # define PERL_DUMMY_TOD_ PERL_DUMMY_SYNTAX_
1292 # define LC_ALL_INDEX_ PERL_DUMMY_TOD_ + 1
1295 /* XXX The next few defines are unfortunately duplicated in makedef.pl, and
1296 * changes here MUST also be made there */
1298 # if defined(USE_ITHREADS) && ! defined(NO_LOCALE_THREADS)
1299 # define USE_LOCALE_THREADS
1301 # if ! defined(HAS_SETLOCALE) && defined(HAS_POSIX_2008_LOCALE)
1302 # define USE_POSIX_2008_LOCALE
1303 # ifndef USE_THREAD_SAFE_LOCALE
1304 # define USE_THREAD_SAFE_LOCALE
1307 * -DUSE_THREAD_SAFE_LOCALE, will do so even
1308 * on unthreaded builds */
1309 # elif (defined(USE_LOCALE_THREADS) || defined(USE_THREAD_SAFE_LOCALE)) \
1310 && ( defined(HAS_POSIX_2008_LOCALE) \
1311 || (defined(WIN32) && defined(_MSC_VER))) \
1312 && ! defined(NO_THREAD_SAFE_LOCALE)
1313 # ifndef USE_THREAD_SAFE_LOCALE
1314 # define USE_THREAD_SAFE_LOCALE
1316 # ifdef HAS_POSIX_2008_LOCALE
1317 # define USE_POSIX_2008_LOCALE
1321 /* Allow use of glib's undocumented querylocale() equivalent if asked for, and
1323 # ifdef USE_POSIX_2008_LOCALE
1324 # if defined(HAS_QUERYLOCALE) \
1325 /* Has this internal undocumented item for nl_langinfo() */ \
1326 || ( defined(_NL_LOCALE_NAME) \
1327 /* And asked for */ \
1328 && defined(USE_NL_LOCALE_NAME) \
1329 /* We need the below because we will be calling it within a \
1330 * macro, can't have it get messed up by another thread. */ \
1331 && defined(HAS_THREAD_SAFE_NL_LANGINFO_L) \
1332 /* On systems that accept any locale name, the real \
1333 * underlying locale is often returned by this internal \
1334 * item, so we can't use it */ \
1335 && ! defined(SETLOCALE_ACCEPTS_ANY_LOCALE_NAME))
1336 # define USE_QUERYLOCALE
1340 /* Microsoft documentation reads in the change log for VS 2015:
1341 * "The localeconv function declared in locale.h now works correctly when
1342 * per-thread locale is enabled. In previous versions of the library, this
1343 * function would return the lconv data for the global locale, not the
1346 # if defined(WIN32) && defined(USE_THREAD_SAFE_LOCALE) && _MSC_VER < 1900
1347 # define TS_W32_BROKEN_LOCALECONV
1354 # ifdef PARAM_NEEDS_TYPES
1355 # include <sys/types.h>
1357 # include <sys/param.h>
1360 /* On BSD-derived systems, <sys/param.h> defines BSD to a year-month
1361 value something like 199306. This may be useful if no more-specific
1362 feature test is available.
1370 /* Use all the "standard" definitions */
1373 /* If this causes problems, set i_unistd=undef in the hint file. */
1375 # if defined(__amigaos4__)
1376 # ifdef I_NETINET_IN
1377 # include <netinet/in.h>
1380 # include <unistd.h>
1381 # if defined(__amigaos4__)
1382 /* Under AmigaOS 4 newlib.library provides an environ. However using
1383 * it doesn't give us enough control over inheritance of variables by
1384 * subshells etc. so replace with custom version based on abc-shell
1386 extern char **myenviron;
1388 # define environ myenviron
1394 # include <sys/wait.h>
1397 #if defined(HAS_SYSCALL) && !defined(HAS_SYSCALL_PROTO)
1398 EXTERN_C int syscall(int, ...);
1401 #if defined(HAS_USLEEP) && !defined(HAS_USLEEP_PROTO)
1402 EXTERN_C int usleep(unsigned int);
1405 /* Macros for correct constant construction. These are in C99 <stdint.h>
1406 * (so they will not be available in strict C89 mode), but they are nice, so
1407 * let's define them if necessary.
1408 =for apidoc_section $integer
1409 =for apidoc Am|I16|INT16_C|number
1410 =for apidoc_item |I32|INT32_C|number
1411 =for apidoc_item |I64|INT64_C|number
1413 Returns a token the C compiler recognizes for the constant C<number> of the
1414 corresponding integer type on the machine.
1416 If the machine does not have a 64-bit type, C<INT64_C> is undefined.
1417 Use C<L</INTMAX_C>> to get the largest type available on the platform.
1419 =for apidoc Am|U16|UINT16_C|number
1420 =for apidoc_item |U32|UINT32_C|number
1421 =for apidoc_item |U64|UINT64_C|number
1423 Returns a token the C compiler recognizes for the constant C<number> of the
1424 corresponding unsigned integer type on the machine.
1426 If the machine does not have a 64-bit type, C<UINT64_C> is undefined.
1427 Use C<L</UINTMAX_C>> to get the largest type available on the platform.
1434 # define UINT16_C(x) ((U16_TYPE)x##U)
1436 # define UINT16_C(x) ((U16_TYPE)x##UL)
1442 # define UINT32_C(x) ((U32_TYPE)x##U)
1444 # define UINT32_C(x) ((U32_TYPE)x##UL)
1449 typedef intmax_t PERL_INTMAX_T;
1450 typedef uintmax_t PERL_UINTMAX_T;
1453 /* N.B. We use QUADKIND here instead of HAS_QUAD here, because that doesn't
1454 * actually mean what it has always been documented to mean (see RT #119753)
1455 * and is explicitly turned off outside of core with dire warnings about
1456 * removing the undef. */
1458 #if defined(QUADKIND)
1459 # undef PeRl_INT64_C
1460 # undef PeRl_UINT64_C
1461 /* Prefer the native integer types (int and long) over long long
1462 * (which is not C89) and Win32-specific __int64. */
1463 # if QUADKIND == QUAD_IS_INT && INTSIZE == 8
1464 # define PeRl_INT64_C(c) (c)
1465 # define PeRl_UINT64_C(c) CAT2(c,U)
1467 # if QUADKIND == QUAD_IS_LONG && LONGSIZE == 8
1468 # define PeRl_INT64_C(c) CAT2(c,L)
1469 # define PeRl_UINT64_C(c) CAT2(c,UL)
1471 # if QUADKIND == QUAD_IS_LONG_LONG && defined(HAS_LONG_LONG)
1472 # define PeRl_INT64_C(c) CAT2(c,LL)
1473 # define PeRl_UINT64_C(c) CAT2(c,ULL)
1475 # if QUADKIND == QUAD_IS___INT64
1476 # define PeRl_INT64_C(c) CAT2(c,I64)
1477 # define PeRl_UINT64_C(c) CAT2(c,UI64)
1479 # ifndef PeRl_INT64_C
1480 # define PeRl_INT64_C(c) ((I64)(c)) /* last resort */
1481 # define PeRl_UINT64_C(c) ((U64TYPE)(c))
1483 /* In OS X the INT64_C/UINT64_C are defined with LL/ULL, which will
1484 * not fly with C89-pedantic gcc, so let's undefine them first so that
1485 * we can redefine them with our native integer preferring versions. */
1486 # if defined(PERL_DARWIN) && defined(PERL_GCC_PEDANTIC)
1491 # define INT64_C(c) PeRl_INT64_C(c)
1494 # define UINT64_C(c) PeRl_UINT64_C(c)
1498 =for apidoc_section $integer
1499 =for apidoc Am||INTMAX_C|number
1500 Returns a token the C compiler recognizes for the constant C<number> of the
1501 widest integer type on the machine. For example, if the machine has C<long
1502 long>s, C<INTMAX_C(-1)> would yield
1506 See also, for example, C<L</INT32_C>>.
1508 Use L</IV> to declare variables of the maximum usable size on this platform.
1510 =for apidoc Am||UINTMAX_C|number
1511 Returns a token the C compiler recognizes for the constant C<number> of the
1512 widest unsigned integer type on the machine. For example, if the machine has
1513 C<long>s, C<UINTMAX_C(1)> would yield
1517 See also, for example, C<L</UINT32_C>>.
1519 Use L</UV> to declare variables of the maximum usable size on this platform.
1525 typedef I64TYPE PERL_INTMAX_T;
1526 typedef U64TYPE PERL_UINTMAX_T;
1529 # define INTMAX_C(c) INT64_C(c)
1532 # define UINTMAX_C(c) UINT64_C(c)
1535 #else /* below QUADKIND is undefined */
1537 /* Perl doesn't work on 16 bit systems, so must be 32 bit */
1539 typedef I32TYPE PERL_INTMAX_T;
1540 typedef U32TYPE PERL_UINTMAX_T;
1543 # define INTMAX_C(c) INT32_C(c)
1546 # define UINTMAX_C(c) UINT32_C(c)
1549 #endif /* no QUADKIND */
1553 /* byte-swapping functions for big-/little-endian conversion */
1554 # define _swab_16_(x) ((U16)( \
1555 (((U16)(x) & UINT16_C(0x00ff)) << 8) | \
1556 (((U16)(x) & UINT16_C(0xff00)) >> 8) ))
1558 # define _swab_32_(x) ((U32)( \
1559 (((U32)(x) & UINT32_C(0x000000ff)) << 24) | \
1560 (((U32)(x) & UINT32_C(0x0000ff00)) << 8) | \
1561 (((U32)(x) & UINT32_C(0x00ff0000)) >> 8) | \
1562 (((U32)(x) & UINT32_C(0xff000000)) >> 24) ))
1565 # define _swab_64_(x) ((U64)( \
1566 (((U64)(x) & UINT64_C(0x00000000000000ff)) << 56) | \
1567 (((U64)(x) & UINT64_C(0x000000000000ff00)) << 40) | \
1568 (((U64)(x) & UINT64_C(0x0000000000ff0000)) << 24) | \
1569 (((U64)(x) & UINT64_C(0x00000000ff000000)) << 8) | \
1570 (((U64)(x) & UINT64_C(0x000000ff00000000)) >> 8) | \
1571 (((U64)(x) & UINT64_C(0x0000ff0000000000)) >> 24) | \
1572 (((U64)(x) & UINT64_C(0x00ff000000000000)) >> 40) | \
1573 (((U64)(x) & UINT64_C(0xff00000000000000)) >> 56) ))
1576 /* Maximum level of recursion */
1577 #ifndef PERL_SUB_DEPTH_WARN
1578 #define PERL_SUB_DEPTH_WARN 100
1581 #endif /* PERL_CORE */
1583 /* Maximum number of args that may be passed to an OP_MULTICONCAT op.
1584 * It determines the size of local arrays in S_maybe_multiconcat() and
1587 #define PERL_MULTICONCAT_MAXARG 64
1589 /* The indexes of fields of a multiconcat aux struct.
1590 * The fixed fields are followed by nargs+1 const segment lengths,
1591 * and if utf8 and non-utf8 differ, a second nargs+1 set for utf8.
1594 #define PERL_MULTICONCAT_IX_NARGS 0 /* number of arguments */
1595 #define PERL_MULTICONCAT_IX_PLAIN_PV 1 /* non-utf8 constant string */
1596 #define PERL_MULTICONCAT_IX_PLAIN_LEN 2 /* non-utf8 constant string length */
1597 #define PERL_MULTICONCAT_IX_UTF8_PV 3 /* utf8 constant string */
1598 #define PERL_MULTICONCAT_IX_UTF8_LEN 4 /* utf8 constant string length */
1599 #define PERL_MULTICONCAT_IX_LENGTHS 5 /* first of nargs+1 const segment lens */
1600 #define PERL_MULTICONCAT_HEADER_SIZE 5 /* The number of fields of a
1601 multiconcat header */
1603 /* We no longer default to creating a new SV for GvSV.
1604 Do this before embed. */
1605 #ifndef PERL_CREATE_GVSV
1606 # ifndef PERL_DONT_CREATE_GVSV
1607 # define PERL_DONT_CREATE_GVSV
1611 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
1612 #define PERL_USES_PL_PIDSTATUS
1615 #if !defined(OS2) && !defined(WIN32)
1616 #define PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION
1619 #define MEM_SIZE Size_t
1621 /* Round all values passed to malloc up, by default to a multiple of
1624 #ifndef PERL_STRLEN_ROUNDUP_QUANTUM
1625 #define PERL_STRLEN_ROUNDUP_QUANTUM Size_t_size
1628 /* sv_grow() will expand strings by at least a certain percentage of
1629 the previously *used* length to avoid excessive calls to realloc().
1630 The default is 25% of the current length.
1632 #ifndef PERL_STRLEN_EXPAND_SHIFT
1633 # define PERL_STRLEN_EXPAND_SHIFT 2
1636 /* This use of offsetof() requires /Zc:offsetof- for VS2017 (and presumably
1637 * onwards) when building Socket.xs, but we can just use a different definition
1638 * for STRUCT_OFFSET instead. */
1639 #if defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1910
1640 # define STRUCT_OFFSET(s,m) (Size_t)(&(((s *)0)->m))
1642 # include <stddef.h>
1643 # define STRUCT_OFFSET(s,m) offsetof(s,m)
1646 /* ptrdiff_t is C11, so undef it under pedantic builds. (Actually it is
1647 * in C89, but apparently there are platforms where it doesn't exist. See
1648 * thread beginning at http://nntp.perl.org/group/perl.perl5.porters/251541.)
1650 #ifdef PERL_GCC_PEDANTIC
1651 # undef HAS_PTRDIFF_T
1654 #ifdef HAS_PTRDIFF_T
1655 # define Ptrdiff_t ptrdiff_t
1657 # define Ptrdiff_t SSize_t
1660 # include <string.h>
1662 /* This comes after <stdlib.h> so we don't try to change the standard
1663 * library prototypes; we'll use our own in proto.h instead. */
1666 # ifdef PERL_POLLUTE_MALLOC
1667 # ifndef PERL_EXTMALLOC_DEF
1668 # define Perl_malloc malloc
1669 # define Perl_calloc calloc
1670 # define Perl_realloc realloc
1671 # define Perl_mfree free
1674 # define EMBEDMYMALLOC /* for compatibility */
1677 # define safemalloc Perl_malloc
1678 # define safecalloc Perl_calloc
1679 # define saferealloc Perl_realloc
1680 # define safefree Perl_mfree
1681 # define CHECK_MALLOC_TOO_LATE_FOR_(code) STMT_START { \
1682 if (!TAINTING_get && MallocCfg_ptr[MallocCfg_cfg_env_read]) \
1685 # define CHECK_MALLOC_TOO_LATE_FOR(ch) \
1686 CHECK_MALLOC_TOO_LATE_FOR_(MALLOC_TOO_LATE_FOR(ch))
1687 # define panic_write2(s) write(2, s, strlen(s))
1688 # define CHECK_MALLOC_TAINT(newval) \
1689 CHECK_MALLOC_TOO_LATE_FOR_( \
1691 PERL_UNUSED_RESULT(panic_write2("panic: tainting with $ENV{PERL_MALLOC_OPT}\n"));\
1693 # define MALLOC_CHECK_TAINT(argc,argv,env) STMT_START { \
1694 if (doing_taint(argc,argv,env)) { \
1695 MallocCfg_ptr[MallocCfg_skip_cfg_env] = 1; \
1697 #else /* MYMALLOC */
1698 # define safemalloc safesysmalloc
1699 # define safecalloc safesyscalloc
1700 # define saferealloc safesysrealloc
1701 # define safefree safesysfree
1702 # define CHECK_MALLOC_TOO_LATE_FOR(ch) ((void)0)
1703 # define CHECK_MALLOC_TAINT(newval) ((void)0)
1704 # define MALLOC_CHECK_TAINT(argc,argv,env)
1705 #endif /* MYMALLOC */
1707 /* diag_listed_as: "-T" is on the #! line, it must also be used on the command line */
1708 #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)
1709 #define TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, "")
1710 #define MALLOC_TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, " with $ENV{PERL_MALLOC_OPT}")
1711 #define MALLOC_CHECK_TAINT2(argc,argv) MALLOC_CHECK_TAINT(argc,argv,NULL)
1714 =for apidoc Am|void|memzero|void * d|Size_t l
1715 Set the C<l> bytes starting at C<*d> to all zeroes.
1720 # define memzero(d,l) memset(d,0,l)
1724 # include <netinet/in.h>
1728 # include <arpa/inet.h>
1732 # include <sys/stat.h>
1735 /* Microsoft VC's sys/stat.h defines all S_Ixxx macros except S_IFIFO.
1736 This definition should ideally go into win32/win32.h, but S_IFIFO is
1737 used later here in perl.h before win32/win32.h is being included. */
1738 #if !defined(S_IFIFO) && defined(_S_IFIFO)
1739 # define S_IFIFO _S_IFIFO
1742 /* The stat macros for Unisoft System V/88 (and derivatives
1743 like UTekV) are broken, sometimes giving false positives. Undefine
1744 them here and let the code below set them to proper values.
1746 The ghs macro stands for GreenHills Software C-1.8.5 which
1747 is the C compiler for sysV88 and the various derivatives.
1748 This header file bug is corrected in gcc-2.5.8 and later versions.
1749 --Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94. */
1751 #if defined(m88k) && defined(ghs)
1763 # ifdef I_SYS_TIME_KERNEL
1766 # include <sys/time.h>
1767 # ifdef I_SYS_TIME_KERNEL
1772 #if defined(HAS_TIMES) && defined(I_SYS_TIMES)
1773 # include <sys/times.h>
1778 #if defined(WIN32) && defined(PERL_IMPLICIT_SYS)
1779 # define WIN32SCK_IS_STDSCK /* don't pull in custom wsock layer */
1782 #if defined(HAS_SOCKET) && !defined(WIN32) /* WIN32 handles sockets via win32.h */
1783 # include <sys/socket.h>
1784 # if defined(USE_SOCKS) && defined(I_SOCKS)
1785 # if !defined(INCLUDE_PROTOTYPES)
1786 # define INCLUDE_PROTOTYPES /* for <socks.h> */
1787 # define PERL_SOCKS_NEED_PROTOTYPES
1790 # ifdef PERL_SOCKS_NEED_PROTOTYPES /* keep cpp space clean */
1791 # undef INCLUDE_PROTOTYPES
1792 # undef PERL_SOCKS_NEED_PROTOTYPES
1800 # include <net/errno.h>
1805 /* sockatmark() is so new (2001) that many places might have it hidden
1806 * behind some -D_BLAH_BLAH_SOURCE guard. The __THROW magic is required
1807 * e.g. in Gentoo, see http://bugs.gentoo.org/show_bug.cgi?id=12605 */
1808 #if defined(HAS_SOCKATMARK) && !defined(HAS_SOCKATMARK_PROTO)
1809 # if defined(__THROW) && defined(__GLIBC__)
1810 int sockatmark(int) __THROW;
1812 int sockatmark(int);
1816 #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. */
1817 EXTERN_C int fchdir(int);
1818 EXTERN_C int flock(int, int);
1819 EXTERN_C int fseeko(FILE *, off_t, int);
1820 EXTERN_C off_t ftello(FILE *);
1823 #if defined(__SUNPRO_CC) /* SUNWspro CC (C++) */
1824 EXTERN_C char *crypt(const char *, const char *);
1827 #if defined(__cplusplus) && defined(__CYGWIN__)
1828 EXTERN_C char *crypt(const char *, const char *);
1832 =for apidoc_section $errno
1834 =for apidoc m|void|SETERRNO|int errcode|int vmserrcode
1836 Set C<errno>, and on VMS set C<vaxc$errno>.
1838 =for apidoc mn|void|dSAVEDERRNO
1840 Declare variables needed to save C<errno> and any operating system
1841 specific error number.
1843 =for apidoc mn|void|dSAVE_ERRNO
1845 Declare variables needed to save C<errno> and any operating system
1846 specific error number, and save them for optional later restoration
1847 by C<RESTORE_ERRNO>.
1849 =for apidoc mn|void|SAVE_ERRNO
1851 Save C<errno> and any operating system specific error number for
1852 optional later restoration by C<RESTORE_ERRNO>. Requires
1853 C<dSAVEDERRNO> or C<dSAVE_ERRNO> in scope.
1855 =for apidoc mn|void|RESTORE_ERRNO
1857 Restore C<errno> and any operating system specific error number that
1858 was saved by C<dSAVE_ERRNO> or C<RESTORE_ERRNO>.
1864 # undef SETERRNO /* SOCKS might have defined this */
1868 # define SETERRNO(errcode,vmserrcode) \
1870 set_errno(errcode); \
1871 set_vaxc_errno(vmserrcode); \
1873 # define dSAVEDERRNO int saved_errno; unsigned saved_vms_errno
1874 # define dSAVE_ERRNO int saved_errno = errno; unsigned saved_vms_errno = vaxc$errno
1875 # define SAVE_ERRNO ( saved_errno = errno, saved_vms_errno = vaxc$errno )
1876 # define RESTORE_ERRNO SETERRNO(saved_errno, saved_vms_errno)
1878 # define LIB_INVARG LIB$_INVARG
1879 # define RMS_DIR RMS$_DIR
1880 # define RMS_FAC RMS$_FAC
1881 # define RMS_FEX RMS$_FEX
1882 # define RMS_FNF RMS$_FNF
1883 # define RMS_IFI RMS$_IFI
1884 # define RMS_ISI RMS$_ISI
1885 # define RMS_PRV RMS$_PRV
1886 # define SS_ACCVIO SS$_ACCVIO
1887 # define SS_DEVOFFLINE SS$_DEVOFFLINE
1888 # define SS_IVCHAN SS$_IVCHAN
1889 # define SS_NORMAL SS$_NORMAL
1890 # define SS_NOPRIV SS$_NOPRIV
1891 # define SS_BUFFEROVF SS$_BUFFEROVF
1893 # define LIB_INVARG 0
1901 # define SS_ACCVIO 0
1902 # define SS_DEVOFFLINE 0
1903 # define SS_IVCHAN 0
1904 # define SS_NORMAL 0
1905 # define SS_NOPRIV 0
1906 # define SS_BUFFEROVF 0
1910 # define dSAVEDERRNO int saved_errno; DWORD saved_win32_errno
1911 # define dSAVE_ERRNO int saved_errno = errno; DWORD saved_win32_errno = GetLastError()
1912 # define SAVE_ERRNO ( saved_errno = errno, saved_win32_errno = GetLastError() )
1913 # define RESTORE_ERRNO ( errno = saved_errno, SetLastError(saved_win32_errno) )
1917 # define dSAVEDERRNO int saved_errno; unsigned long saved_os2_errno
1918 # define dSAVE_ERRNO int saved_errno = errno; unsigned long saved_os2_errno = Perl_rc
1919 # define SAVE_ERRNO ( saved_errno = errno, saved_os2_errno = Perl_rc )
1920 # define RESTORE_ERRNO ( errno = saved_errno, Perl_rc = saved_os2_errno )
1924 # define SETERRNO(errcode,vmserrcode) (errno = (errcode))
1928 # define dSAVEDERRNO int saved_errno
1929 # define dSAVE_ERRNO int saved_errno = errno
1930 # define SAVE_ERRNO (saved_errno = errno)
1931 # define RESTORE_ERRNO (errno = saved_errno)
1935 =for apidoc_section $warning
1937 =for apidoc Amn|SV *|ERRSV
1939 Returns the SV for C<$@>, creating it if needed.
1941 =for apidoc Am|void|CLEAR_ERRSV
1943 Clear the contents of C<$@>, setting it to the empty string.
1945 This replaces any read-only SV with a fresh SV and removes any magic.
1947 =for apidoc Am|void|SANE_ERRSV
1949 Clean up ERRSV so we can safely set it.
1951 This replaces any read-only SV with a fresh writable copy and removes
1957 #define ERRSV GvSVn(PL_errgv)
1959 /* contains inlined gv_add_by_type */
1960 #define CLEAR_ERRSV() STMT_START { \
1961 SV ** const svp = &GvSV(PL_errgv); \
1963 *svp = newSVpvs(""); \
1964 } else if (SvREADONLY(*svp)) { \
1965 SvREFCNT_dec_NN(*svp); \
1966 *svp = newSVpvs(""); \
1968 SV *const errsv = *svp; \
1970 SvPOK_only(errsv); \
1971 if (SvMAGICAL(errsv)) { \
1977 /* contains inlined gv_add_by_type */
1978 #define SANE_ERRSV() STMT_START { \
1979 SV ** const svp = &GvSV(PL_errgv); \
1981 *svp = newSVpvs(""); \
1982 } else if (SvREADONLY(*svp)) { \
1983 SV *dupsv = newSVsv(*svp); \
1984 SvREFCNT_dec_NN(*svp); \
1987 SV *const errsv = *svp; \
1988 if (SvMAGICAL(errsv)) { \
1996 # define DEFSV (0 + GvSVn(PL_defgv))
1997 # define DEFSV_set(sv) \
1998 (SvREFCNT_dec(GvSV(PL_defgv)), GvSV(PL_defgv) = SvREFCNT_inc(sv))
1999 # define SAVE_DEFSV \
2001 save_gp(PL_defgv, 0), \
2002 GvINTRO_off(PL_defgv), \
2003 SAVEGENERICSV(GvSV(PL_defgv)), \
2004 GvSV(PL_defgv) = NULL \
2007 # define DEFSV GvSVn(PL_defgv)
2008 # define DEFSV_set(sv) (GvSV(PL_defgv) = (sv))
2009 # define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv))
2013 =for apidoc_section $SV
2014 =for apidoc Amn|SV *|DEFSV
2015 Returns the SV associated with C<$_>
2017 =for apidoc Am|void|DEFSV_set|SV * sv
2018 Associate C<sv> with C<$_>
2020 =for apidoc Amn|void|SAVE_DEFSV
2021 Localize C<$_>. See L<perlguts/Localizing changes>.
2027 extern int errno; /* ANSI allows errno to be an lvalue expr.
2028 * For example in multithreaded environments
2029 * something like this might happen:
2030 * extern int *_errno(void);
2031 * #define errno (*_errno()) */
2034 #define UNKNOWN_ERRNO_MSG "(unknown)"
2037 #define Strerror(e) strerror((e), vaxc$errno)
2039 #define Strerror(e) strerror(e)
2044 # include <sys/ioctl.h>
2048 #if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
2049 # ifdef HAS_SOCKETPAIR
2050 # undef HAS_SOCKETPAIR
2057 #ifndef HAS_SOCKETPAIR
2059 # define socketpair Perl_my_socketpair
2064 # define htoni htons
2065 # define ntohi ntohs
2067 # define htoni htonl
2068 # define ntohi ntohl
2071 /* Configure already sets Direntry_t */
2072 #if defined(I_DIRENT)
2073 # include <dirent.h>
2074 #elif defined(I_SYS_NDIR)
2075 # include <sys/ndir.h>
2076 #elif defined(I_SYS_DIR)
2077 # include <sys/dir.h>
2081 * The following gobbledygook brought to you on behalf of __STDC__.
2082 * (I could just use #ifndef __STDC__, but this is more bulletproof
2083 * in the face of half-implementations.)
2086 #if defined(I_SYSMODE)
2087 #include <sys/mode.h>
2092 # define S_IFMT _S_IFMT
2094 # define S_IFMT 0170000
2099 # define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
2103 # define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
2108 # define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
2110 # define S_ISBLK(m) (0)
2115 # define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
2120 # define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
2122 # define S_ISFIFO(m) (0)
2128 # define S_ISLNK(m) _S_ISLNK(m)
2129 # elif defined(_S_IFLNK)
2130 # define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
2131 # elif defined(S_IFLNK)
2132 # define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
2134 # define S_ISLNK(m) (0)
2140 # define S_ISSOCK(m) _S_ISSOCK(m)
2141 # elif defined(_S_IFSOCK)
2142 # define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
2143 # elif defined(S_IFSOCK)
2144 # define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
2146 # define S_ISSOCK(m) (0)
2152 # define S_IRUSR S_IREAD
2153 # define S_IWUSR S_IWRITE
2154 # define S_IXUSR S_IEXEC
2156 # define S_IRUSR 0400
2157 # define S_IWUSR 0200
2158 # define S_IXUSR 0100
2164 # define S_IRGRP (S_IRUSR>>3)
2165 # define S_IWGRP (S_IWUSR>>3)
2166 # define S_IXGRP (S_IXUSR>>3)
2168 # define S_IRGRP 0040
2169 # define S_IWGRP 0020
2170 # define S_IXGRP 0010
2176 # define S_IROTH (S_IRUSR>>6)
2177 # define S_IWOTH (S_IWUSR>>6)
2178 # define S_IXOTH (S_IXUSR>>6)
2180 # define S_IROTH 0040
2181 # define S_IWOTH 0020
2182 # define S_IXOTH 0010
2187 # define S_ISUID 04000
2191 # define S_ISGID 02000
2195 # define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR)
2199 # define S_IRWXG (S_IRGRP|S_IWGRP|S_IXGRP)
2203 # define S_IRWXO (S_IROTH|S_IWOTH|S_IXOTH)
2206 /* Haiku R1 seems to define S_IREAD and S_IWRITE in <posix/fcntl.h>
2207 * which would get included through <sys/file.h >, but that is 3000
2208 * lines in the future. --jhi */
2210 #if !defined(S_IREAD) && !defined(__HAIKU__)
2211 # define S_IREAD S_IRUSR
2214 #if !defined(S_IWRITE) && !defined(__HAIKU__)
2215 # define S_IWRITE S_IWUSR
2219 # define S_IEXEC S_IXUSR
2222 #if defined(cray) || defined(gould) || defined(i860) || defined(pyr)
2223 # define SLOPPYDIVIDE
2230 /* This used to be conditionally defined based on whether we had a sprintf()
2231 * that correctly returns the string length (as required by C89), but we no
2232 * longer need that. XS modules can (and do) use this name, so it must remain
2233 * a part of the API that's visible to modules.
2235 =for apidoc_section $string
2236 =for apidoc ATmD|int|my_sprintf|NN char *buffer|NN const char *pat|...
2238 Do NOT use this due to the possibility of overflowing C<buffer>. Instead use
2243 #define my_sprintf sprintf
2246 * If we have v?snprintf() and the C99 variadic macros, we can just
2247 * use just the v?snprintf(). It is nice to try to trap the buffer
2248 * overflow, however, so if we are DEBUGGING, and we cannot use the
2249 * gcc statement expressions, then use the function wrappers which try
2250 * to trap the overflow. If we can use the gcc statement expressions,
2251 * we can try that even with the version that uses the C99 variadic
2255 /* Note that we do not check against snprintf()/vsnprintf() returning
2256 * negative values because that is non-standard behaviour and we use
2257 * snprintf/vsnprintf only iff HAS_VSNPRINTF has been defined, and
2258 * that should be true only if the snprintf()/vsnprintf() are true
2259 * to the standard. */
2261 #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
2264 # define my_snprintf Perl_my_snprintf
2265 # define PERL_MY_SNPRINTF_GUARDED
2266 #elif defined(HAS_SNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
2267 # ifdef PERL_USE_GCC_BRACE_GROUPS
2268 # define my_snprintf(buffer, max, ...) ({ int len = snprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, snprintf); len; })
2269 # define PERL_MY_SNPRINTF_GUARDED
2271 # define my_snprintf(buffer, max, ...) snprintf(buffer, max, __VA_ARGS__)
2274 # define my_snprintf Perl_my_snprintf
2275 # define PERL_MY_SNPRINTF_GUARDED
2278 /* There is no quadmath_vsnprintf, and therefore my_vsnprintf()
2279 * dies if called under USE_QUADMATH. */
2280 #if defined(HAS_VSNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
2281 # ifdef PERL_USE_GCC_BRACE_GROUPS
2282 # define my_vsnprintf(buffer, max, ...) ({ int len = vsnprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, vsnprintf); len; })
2283 # define PERL_MY_VSNPRINTF_GUARDED
2285 # define my_vsnprintf(buffer, max, ...) vsnprintf(buffer, max, __VA_ARGS__)
2288 # define my_vsnprintf Perl_my_vsnprintf
2289 # define PERL_MY_VSNPRINTF_GUARDED
2292 /* You will definitely need to use the PERL_MY_SNPRINTF_POST_GUARD()
2293 * or PERL_MY_VSNPRINTF_POST_GUARD() if you otherwise decide to ignore
2294 * the result of my_snprintf() or my_vsnprintf(). (No, you should not
2295 * completely ignore it: otherwise you cannot know whether your output
2298 * int len = my_sprintf(buf, max, ...);
2299 * PERL_MY_SNPRINTF_POST_GUARD(len, max);
2301 * The trick is that in certain platforms [a] the my_sprintf() already
2302 * contains the sanity check, while in certain platforms [b] it needs
2303 * to be done as a separate step. The POST_GUARD is that step-- in [a]
2304 * platforms the POST_GUARD actually does nothing since the check has
2305 * already been done. Watch out for the max being the same in both calls.
2307 * If you actually use the snprintf/vsnprintf return value already,
2308 * you assumedly are checking its validity somehow. But you can
2309 * insert the POST_GUARD() also in that case. */
2311 #ifndef PERL_MY_SNPRINTF_GUARDED
2312 # define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, snprintf)
2314 # define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
2317 #ifndef PERL_MY_VSNPRINTF_GUARDED
2318 # define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, vsnprintf)
2320 # define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
2324 # define my_strlcat strlcat
2327 #if defined(PERL_CORE) || defined(PERL_EXT)
2329 # define my_memrchr memrchr
2331 # define my_memrchr S_my_memrchr
2336 # define my_strlcpy strlcpy
2340 # define my_strnlen strnlen
2344 The IV type is supposed to be long enough to hold any integral
2346 --Andy Dougherty August 1996
2352 #if defined(USE_64_BIT_INT) && defined(HAS_QUAD)
2353 # if QUADKIND == QUAD_IS_INT64_T && defined(INT64_MAX)
2354 # define IV_MAX ((IV)INT64_MAX)
2355 # define IV_MIN ((IV)INT64_MIN)
2356 # define UV_MAX ((UV)UINT64_MAX)
2358 # define UINT64_MIN 0
2360 # define UV_MIN ((UV)UINT64_MIN)
2362 # define IV_MAX PERL_QUAD_MAX
2363 # define IV_MIN PERL_QUAD_MIN
2364 # define UV_MAX PERL_UQUAD_MAX
2365 # define UV_MIN PERL_UQUAD_MIN
2370 # if defined(INT32_MAX) && IVSIZE == 4
2371 # define IV_MAX ((IV)INT32_MAX)
2372 # define IV_MIN ((IV)INT32_MIN)
2373 # ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
2374 # define UV_MAX ((UV)UINT32_MAX)
2376 # define UV_MAX ((UV)4294967295U)
2379 # define UINT32_MIN 0
2381 # define UV_MIN ((UV)UINT32_MIN)
2383 # define IV_MAX PERL_LONG_MAX
2384 # define IV_MIN PERL_LONG_MIN
2385 # define UV_MAX PERL_ULONG_MAX
2386 # define UV_MIN PERL_ULONG_MIN
2397 #if !defined(PERL_CORE)
2398 /* We think that removing this decade-old undef this will cause too much
2399 breakage on CPAN for too little gain. (See RT #119753)
2400 However, we do need HAS_QUAD in the core for use by the drand48 code. */
2406 #define Size_t_MAX (~(Size_t)0)
2407 #define SSize_t_MAX (SSize_t)(~(Size_t)0 >> 1)
2409 #define IV_DIG (BIT_DIGITS(IVSIZE * 8))
2410 #define UV_DIG (BIT_DIGITS(UVSIZE * 8))
2412 #ifndef NO_PERL_PRESERVE_IVUV
2413 #define PERL_PRESERVE_IVUV /* We like our integers to stay integers. */
2417 =for apidoc AmnU||U32of
2418 =for apidoc_item ||U32uf
2419 =for apidoc_item ||U32xf
2420 =for apidoc_item ||U32Xf
2422 These symbols define the format strings used for printing variables declared
2423 as U32; respectively as octal, unsigned, hex (lowercase C<a-f>), and hex
2429 #if U32SIZE == UVSIZE
2434 #elif U32SIZE == INTSIZE
2439 #elif U32SIZE == LONGSIZE
2445 # error Cant figure out formatting strings for U32SIZE
2449 =for apidoc AmnU||I32df
2451 This symbol defines the format string used for printing a variable declared as
2457 #if I32SIZE == IVSIZE
2459 #elif I32SIZE == INTSIZE
2461 #elif I32SIZE == LONGSIZE
2464 # error Cant figure out formatting string for I32SIZE
2468 * The macros INT2PTR and NUM2PTR are (despite their names)
2469 * bi-directional: they will convert int/float to or from pointers.
2470 * However the conversion to int/float are named explicitly:
2471 * PTR2IV, PTR2UV, PTR2NV.
2473 * For int conversions we do not need two casts if pointers are
2474 * the same size as IV and UV. Otherwise we need an explicit
2475 * cast (PTRV) to avoid compiler warnings.
2477 * These are mentioned in perlguts
2479 #if (IVSIZE == PTRSIZE) && (UVSIZE == PTRSIZE)
2481 # define INT2PTR(any,d) (any)(d)
2482 #elif PTRSIZE == LONGSIZE
2483 # define PTRV unsigned long
2484 # define PTR2ul(p) (unsigned long)(p)
2486 # define PTRV unsigned
2490 # define INT2PTR(any,d) (any)(PTRV)(d)
2494 # define PTR2ul(p) INT2PTR(unsigned long,p)
2498 =for apidoc_section $casting
2499 =for apidoc Cyh|type|NUM2PTR|type|int value
2500 You probably want to be using L<C</INT2PTR>> instead.
2505 #define NUM2PTR(any,d) (any)(PTRV)(d)
2506 #define PTR2IV(p) INT2PTR(IV,p)
2507 #define PTR2UV(p) INT2PTR(UV,p)
2508 #define PTR2NV(p) NUM2PTR(NV,p)
2509 #define PTR2nat(p) (PTRV)(p) /* pointer to integer of PTRSIZE */
2511 /* According to strict ANSI C89 one cannot freely cast between
2512 * data pointers and function (code) pointers. There are at least
2513 * two ways around this. One (used below) is to do two casts,
2514 * first the other pointer to an (unsigned) integer, and then
2515 * the integer to the other pointer. The other way would be
2516 * to use unions to "overlay" the pointers. For an example of
2517 * the latter technique, see union dirpu in struct xpvio in sv.h.
2518 * The only feasible use is probably temporarily storing
2519 * function pointers in a data pointer (such as a void pointer). */
2521 #define DPTR2FPTR(t,p) ((t)PTR2nat(p)) /* data pointer to function pointer */
2522 #define FPTR2DPTR(t,p) ((t)PTR2nat(p)) /* function pointer to data pointer */
2524 #ifdef USE_LONG_DOUBLE
2525 # if LONG_DOUBLESIZE == DOUBLESIZE
2526 # define LONG_DOUBLE_EQUALS_DOUBLE
2527 # undef USE_LONG_DOUBLE /* Ouch! */
2531 /* The following is all to get LDBL_DIG, in order to pick a nice
2532 default value for printing floating point numbers in Gconvert.
2535 #ifndef HAS_LDBL_DIG
2536 # if LONG_DOUBLESIZE == 10
2537 # define LDBL_DIG 18 /* assume IEEE */
2538 # elif LONG_DOUBLESIZE == 12
2539 # define LDBL_DIG 18 /* gcc? */
2540 # elif LONG_DOUBLESIZE == 16
2541 # define LDBL_DIG 33 /* assume IEEE */
2542 # elif LONG_DOUBLESIZE == DOUBLESIZE
2543 # define LDBL_DIG DBL_DIG /* bummer */
2547 /* On MS Windows,with 64-bit mingw-w64 compilers, we
2548 need to attend to a __float128 alignment issue if
2549 USE_QUADMATH is defined. Otherwise we simply:
2551 32-bit mingw.org compilers might also require
2552 aligned(32) - at least that's what I found with my
2553 Math::Foat128 module. But this is as yet untested
2554 here, so no allowance is being made for mingw.org
2555 compilers at this stage. -- sisyphus January 2021
2557 #if (defined(USE_LONG_DOUBLE) || defined(USE_QUADMATH)) && defined(__MINGW64__)
2558 /* 64-bit build, mingw-w64 compiler only */
2559 typedef NVTYPE NV __attribute__ ((aligned(8)));
2565 # include <ieeefp.h>
2568 #if defined(__DECC) && defined(__osf__)
2569 /* Also Tru64 cc has broken NaN comparisons. */
2570 # define NAN_COMPARE_BROKEN
2573 # define NAN_COMPARE_BROKEN
2576 #ifdef USE_LONG_DOUBLE
2578 # include <sunmath.h>
2580 # if defined(LDBL_DIG)
2581 # define NV_DIG LDBL_DIG
2582 # ifdef LDBL_MANT_DIG
2583 # define NV_MANT_DIG LDBL_MANT_DIG
2586 # define NV_MIN LDBL_MIN
2589 # define NV_MAX LDBL_MAX
2591 # ifdef LDBL_MIN_EXP
2592 # define NV_MIN_EXP LDBL_MIN_EXP
2594 # ifdef LDBL_MAX_EXP
2595 # define NV_MAX_EXP LDBL_MAX_EXP
2597 # ifdef LDBL_MIN_10_EXP
2598 # define NV_MIN_10_EXP LDBL_MIN_10_EXP
2600 # ifdef LDBL_MAX_10_EXP
2601 # define NV_MAX_10_EXP LDBL_MAX_10_EXP
2603 # ifdef LDBL_EPSILON
2604 # define NV_EPSILON LDBL_EPSILON
2607 # define NV_MAX LDBL_MAX
2608 /* Having LDBL_MAX doesn't necessarily mean that we have LDBL_MIN... -Allen */
2609 # elif defined(HUGE_VALL)
2610 # define NV_MAX HUGE_VALL
2613 # if defined(HAS_SQRTL)
2614 # define Perl_acos acosl
2615 # define Perl_asin asinl
2616 # define Perl_atan atanl
2617 # define Perl_atan2 atan2l
2618 # define Perl_ceil ceill
2619 # define Perl_cos cosl
2620 # define Perl_cosh coshl
2621 # define Perl_exp expl
2622 # define Perl_fabs fabsl
2623 # define Perl_floor floorl
2624 # define Perl_fmod fmodl
2625 # define Perl_log logl
2626 # define Perl_log10 log10l
2627 # define Perl_pow powl
2628 # define Perl_sin sinl
2629 # define Perl_sinh sinhl
2630 # define Perl_sqrt sqrtl
2631 # define Perl_tan tanl
2632 # define Perl_tanh tanhl
2634 /* e.g. libsunmath doesn't have modfl and frexpl as of mid-March 2000 */
2637 # define Perl_modf(x,y) modfl(x,y)
2638 /* eg glibc 2.2 series seems to provide modfl on ppc and arm, but has no
2639 prototype in <math.h> */
2640 # ifndef HAS_MODFL_PROTO
2641 EXTERN_C long double modfl(long double, long double *);
2643 # elif (defined(HAS_TRUNCL) || defined(HAS_AINTL)) && defined(HAS_COPYSIGNL)
2644 extern long double Perl_my_modfl(long double x, long double *ip);
2645 # define Perl_modf(x,y) Perl_my_modfl(x,y)
2650 # define Perl_frexp(x,y) frexpl(x,y)
2651 # elif defined(HAS_ILOGBL) && defined(HAS_SCALBNL)
2652 extern long double Perl_my_frexpl(long double x, int *e);
2653 # define Perl_frexp(x,y) Perl_my_frexpl(x,y)
2658 # define Perl_ldexp(x, y) ldexpl(x,y)
2659 # elif defined(HAS_SCALBNL) && FLT_RADIX == 2
2660 # define Perl_ldexp(x,y) scalbnl(x,y)
2664 # if defined(HAS_ISNANL) && !(defined(isnan) && defined(HAS_C99))
2665 # define Perl_isnan(x) isnanl(x)
2666 # elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
2667 # define Perl_isnan(x) isnan(x)
2671 # if defined(HAS_ISINFL) && !(defined(isinf) && defined(HAS_C99))
2672 # define Perl_isinf(x) isinfl(x)
2673 # elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
2674 # define Perl_isinf(x) isinf(x)
2675 # elif defined(LDBL_MAX) && !defined(NAN_COMPARE_BROKEN)
2676 # define Perl_isinf(x) ((x) > LDBL_MAX || (x) < -LDBL_MAX)
2679 # ifndef Perl_isfinite
2680 # define Perl_isfinite(x) Perl_isfinitel(x)
2682 #elif defined(USE_QUADMATH) && defined(I_QUADMATH)
2683 # include <quadmath.h>
2684 # define NV_DIG FLT128_DIG
2685 # define NV_MANT_DIG FLT128_MANT_DIG
2686 # define NV_MIN FLT128_MIN
2687 # define NV_MAX FLT128_MAX
2688 # define NV_MIN_EXP FLT128_MIN_EXP
2689 # define NV_MAX_EXP FLT128_MAX_EXP
2690 # define NV_EPSILON FLT128_EPSILON
2691 # define NV_MIN_10_EXP FLT128_MIN_10_EXP
2692 # define NV_MAX_10_EXP FLT128_MAX_10_EXP
2693 # define Perl_acos acosq
2694 # define Perl_asin asinq
2695 # define Perl_atan atanq
2696 # define Perl_atan2 atan2q
2697 # define Perl_ceil ceilq
2698 # define Perl_cos cosq
2699 # define Perl_cosh coshq
2700 # define Perl_exp expq
2701 # define Perl_fabs fabsq
2702 # define Perl_floor floorq
2703 # define Perl_fmod fmodq
2704 # define Perl_log logq
2705 # define Perl_log10 log10q
2706 # define Perl_signbit signbitq
2707 # define Perl_pow powq
2708 # define Perl_sin sinq
2709 # define Perl_sinh sinhq
2710 # define Perl_sqrt sqrtq
2711 # define Perl_tan tanq
2712 # define Perl_tanh tanhq
2713 # define Perl_modf(x,y) modfq(x,y)
2714 # define Perl_frexp(x,y) frexpq(x,y)
2715 # define Perl_ldexp(x, y) ldexpq(x,y)
2716 # define Perl_isinf(x) isinfq(x)
2717 # define Perl_isnan(x) isnanq(x)
2718 # define Perl_isfinite(x) !(isnanq(x) || isinfq(x))
2719 # define Perl_fp_class(x) ((x) == 0.0Q ? 0 : isinfq(x) ? 3 : isnanq(x) ? 4 : PERL_ABS(x) < FLT128_MIN ? 2 : 1)
2720 # define Perl_fp_class_inf(x) (Perl_fp_class(x) == 3)
2721 # define Perl_fp_class_nan(x) (Perl_fp_class(x) == 4)
2722 # define Perl_fp_class_norm(x) (Perl_fp_class(x) == 1)
2723 # define Perl_fp_class_denorm(x) (Perl_fp_class(x) == 2)
2724 # define Perl_fp_class_zero(x) (Perl_fp_class(x) == 0)
2726 # define NV_DIG DBL_DIG
2727 # define NV_MANT_DIG DBL_MANT_DIG
2728 # define NV_MIN DBL_MIN
2729 # define NV_MAX DBL_MAX
2730 # define NV_MIN_EXP DBL_MIN_EXP
2731 # define NV_MAX_EXP DBL_MAX_EXP
2732 # define NV_MIN_10_EXP DBL_MIN_10_EXP
2733 # define NV_MAX_10_EXP DBL_MAX_10_EXP
2734 # define NV_EPSILON DBL_EPSILON
2735 # define NV_MAX DBL_MAX
2736 # define NV_MIN DBL_MIN
2738 /* These math interfaces are C89. */
2739 # define Perl_acos acos
2740 # define Perl_asin asin
2741 # define Perl_atan atan
2742 # define Perl_atan2 atan2
2743 # define Perl_ceil ceil
2744 # define Perl_cos cos
2745 # define Perl_cosh cosh
2746 # define Perl_exp exp
2747 # define Perl_fabs fabs
2748 # define Perl_floor floor
2749 # define Perl_fmod fmod
2750 # define Perl_log log
2751 # define Perl_log10 log10
2752 # define Perl_pow pow
2753 # define Perl_sin sin
2754 # define Perl_sinh sinh
2755 # define Perl_sqrt sqrt
2756 # define Perl_tan tan
2757 # define Perl_tanh tanh
2759 # define Perl_modf(x,y) modf(x,y)
2760 # define Perl_frexp(x,y) frexp(x,y)
2761 # define Perl_ldexp(x,y) ldexp(x,y)
2765 # define Perl_isnan(x) isnan(x)
2769 # if defined(HAS_ISINF)
2770 # define Perl_isinf(x) isinf(x)
2771 # elif defined(DBL_MAX) && !defined(NAN_COMPARE_BROKEN)
2772 # define Perl_isinf(x) ((x) > DBL_MAX || (x) < -DBL_MAX)
2775 # ifndef Perl_isfinite
2776 # ifdef HAS_ISFINITE
2777 # define Perl_isfinite(x) isfinite(x)
2778 # elif defined(HAS_FINITE)
2779 # define Perl_isfinite(x) finite(x)
2784 /* fpclassify(): C99. It is supposed to be a macro that switches on
2785 * the sizeof() of its argument, so there's no need for e.g. fpclassifyl().*/
2786 #if !defined(Perl_fp_class) && defined(HAS_FPCLASSIFY)
2788 # if defined(FP_INFINITE) && defined(FP_NAN)
2789 # define Perl_fp_class(x) fpclassify(x)
2790 # define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2791 # define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2792 # define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2793 # define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2794 # define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2795 # elif defined(FP_PLUS_INF) && defined(FP_QNAN)
2796 /* Some versions of HP-UX (10.20) have (only) fpclassify() but which is
2797 * actually not the C99 fpclassify, with its own set of return defines. */
2798 # define Perl_fp_class(x) fpclassify(x)
2799 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2800 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2801 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2802 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2803 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
2804 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2805 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2806 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2807 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2808 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2810 # undef Perl_fp_class /* Unknown set of defines */
2814 /* fp_classify(): Legacy: VMS, maybe Unicos? The values, however,
2815 * are identical to the C99 fpclassify(). */
2816 #if !defined(Perl_fp_class) && defined(HAS_FP_CLASSIFY)
2819 /* FP_INFINITE and others are here rather than in math.h as C99 stipulates */
2821 /* oh, and the isnormal macro has a typo in it! */
2823 # define isnormal(x) Perl_fp_class_norm(x)
2825 # if defined(FP_INFINITE) && defined(FP_NAN)
2826 # define Perl_fp_class(x) fp_classify(x)
2827 # define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2828 # define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2829 # define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2830 # define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2831 # define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2833 # undef Perl_fp_class /* Unknown set of defines */
2837 /* Feel free to check with me for the SGI manpages, SGI testing,
2838 * etcetera, if you want to try getting this to work with IRIX.
2840 * - Allen <allens@cpan.org> */
2842 /* fpclass(): SysV, at least Solaris and some versions of IRIX. */
2843 #if !defined(Perl_fp_class) && (defined(HAS_FPCLASS)||defined(HAS_FPCLASSL))
2844 /* Solaris and IRIX have fpclass/fpclassl, but they are using
2845 * an enum typedef, not cpp symbols, and Configure doesn't detect that.
2846 * Define some symbols also as cpp symbols so we can detect them. */
2847 # if defined(__sun) || defined(__sgi) /* XXX Configure test instead */
2848 # define FP_PINF FP_PINF
2849 # define FP_QNAN FP_QNAN
2853 # include <ieeefp.h>
2858 # if defined(USE_LONG_DOUBLE) && defined(HAS_FPCLASSL)
2859 # define Perl_fp_class(x) fpclassl(x)
2861 # define Perl_fp_class(x) fpclass(x)
2863 # if defined(FP_CLASS_PINF) && defined(FP_CLASS_SNAN)
2864 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_CLASS_SNAN)
2865 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_CLASS_QNAN)
2866 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_CLASS_NINF)
2867 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_CLASS_PINF)
2868 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_CLASS_NNORM)
2869 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_CLASS_PNORM)
2870 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_CLASS_NDENORM)
2871 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_CLASS_PDENORM)
2872 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_CLASS_NZERO)
2873 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_CLASS_PZERO)
2874 # elif defined(FP_PINF) && defined(FP_QNAN)
2875 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2876 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2877 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NINF)
2878 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PINF)
2879 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NNORM)
2880 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PNORM)
2881 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NDENORM)
2882 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PDENORM)
2883 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NZERO)
2884 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PZERO)
2886 # undef Perl_fp_class /* Unknown set of defines */
2890 /* fp_class(): Legacy: at least Tru64, some versions of IRIX. */
2891 #if !defined(Perl_fp_class) && (defined(HAS_FP_CLASS)||defined(HAS_FP_CLASSL))
2893 # if !defined(FP_SNAN) && defined(I_FP_CLASS)
2894 # include <fp_class.h>
2896 # if defined(FP_POS_INF) && defined(FP_QNAN)
2897 # ifdef __sgi /* XXX Configure test instead */
2898 # ifdef USE_LONG_DOUBLE
2899 # define Perl_fp_class(x) fp_class_l(x)
2901 # define Perl_fp_class(x) fp_class_d(x)
2904 # if defined(USE_LONG_DOUBLE) && defined(HAS_FP_CLASSL)
2905 # define Perl_fp_class(x) fp_classl(x)
2907 # define Perl_fp_class(x) fp_class(x)
2910 # if defined(FP_POS_INF) && defined(FP_QNAN)
2911 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2912 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2913 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NEG_INF)
2914 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_POS_INF)
2915 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NEG_NORM)
2916 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_POS_NORM)
2917 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NEG_DENORM)
2918 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_POS_DENORM)
2919 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NEG_ZERO)
2920 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_POS_ZERO)
2922 # undef Perl_fp_class /* Unknown set of defines */
2927 /* class(), _class(): Legacy: AIX. */
2928 #if !defined(Perl_fp_class) && defined(HAS_CLASS)
2930 # if defined(FP_PLUS_NORM) && defined(FP_PLUS_INF)
2932 # define Perl_fp_class(x) class(x)
2934 # define Perl_fp_class(x) _class(x)
2936 # if defined(FP_PLUS_INF) && defined(FP_NANQ)
2937 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_NANS)
2938 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_NANQ)
2939 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2940 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2941 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2942 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
2943 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2944 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2945 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2946 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2948 # undef Perl_fp_class /* Unknown set of defines */
2953 /* Win32: _fpclass(), _isnan(), _finite(). */
2956 # define Perl_isnan(x) _isnan(x)
2958 # ifndef Perl_isfinite
2959 # define Perl_isfinite(x) _finite(x)
2961 # ifndef Perl_fp_class_snan
2962 /* No simple way to #define Perl_fp_class because _fpclass()
2963 * returns a set of bits. */
2964 # define Perl_fp_class_snan(x) (_fpclass(x) & _FPCLASS_SNAN)
2965 # define Perl_fp_class_qnan(x) (_fpclass(x) & _FPCLASS_QNAN)
2966 # define Perl_fp_class_nan(x) (_fpclass(x) & (_FPCLASS_SNAN|_FPCLASS_QNAN))
2967 # define Perl_fp_class_ninf(x) (_fpclass(x) & _FPCLASS_NINF)
2968 # define Perl_fp_class_pinf(x) (_fpclass(x) & _FPCLASS_PINF)
2969 # define Perl_fp_class_inf(x) (_fpclass(x) & (_FPCLASS_NINF|_FPCLASS_PINF))
2970 # define Perl_fp_class_nnorm(x) (_fpclass(x) & _FPCLASS_NN)
2971 # define Perl_fp_class_pnorm(x) (_fpclass(x) & _FPCLASS_PN)
2972 # define Perl_fp_class_norm(x) (_fpclass(x) & (_FPCLASS_NN|_FPCLASS_PN))
2973 # define Perl_fp_class_ndenorm(x) (_fpclass(x) & _FPCLASS_ND)
2974 # define Perl_fp_class_pdenorm(x) (_fpclass(x) & _FPCLASS_PD)
2975 # define Perl_fp_class_denorm(x) (_fpclass(x) & (_FPCLASS_ND|_FPCLASS_PD))
2976 # define Perl_fp_class_nzero(x) (_fpclass(x) & _FPCLASS_NZ)
2977 # define Perl_fp_class_pzero(x) (_fpclass(x) & _FPCLASS_PZ)
2978 # define Perl_fp_class_zero(x) (_fpclass(x) & (_FPCLASS_NZ|_FPCLASS_PZ))
2982 #if !defined(Perl_fp_class_inf) && \
2983 defined(Perl_fp_class_pinf) && defined(Perl_fp_class_ninf)
2984 # define Perl_fp_class_inf(x) \
2985 (Perl_fp_class_pinf(x) || Perl_fp_class_ninf(x))
2988 #if !defined(Perl_fp_class_nan) && \
2989 defined(Perl_fp_class_snan) && defined(Perl_fp_class_qnan)
2990 # define Perl_fp_class_nan(x) \
2991 (Perl_fp_class_snan(x) || Perl_fp_class_qnan(x))
2994 #if !defined(Perl_fp_class_zero) && \
2995 defined(Perl_fp_class_pzero) && defined(Perl_fp_class_nzero)
2996 # define Perl_fp_class_zero(x) \
2997 (Perl_fp_class_pzero(x) || Perl_fp_class_nzero(x))
3000 #if !defined(Perl_fp_class_norm) && \
3001 defined(Perl_fp_class_pnorm) && defined(Perl_fp_class_nnorm)
3002 # define Perl_fp_class_norm(x) \
3003 (Perl_fp_class_pnorm(x) || Perl_fp_class_nnorm(x))
3006 #if !defined(Perl_fp_class_denorm) && \
3007 defined(Perl_fp_class_pdenorm) && defined(Perl_fp_class_ndenorm)
3008 # define Perl_fp_class_denorm(x) \
3009 (Perl_fp_class_pdenorm(x) || Perl_fp_class_ndenorm(x))
3013 # ifdef Perl_fp_class_nan
3014 # define Perl_isnan(x) Perl_fp_class_nan(x)
3015 # elif defined(HAS_UNORDERED)
3016 # define Perl_isnan(x) unordered((x), 0.0)
3018 # define Perl_isnan(x) ((x)!=(x))
3023 # ifdef Perl_fp_class_inf
3024 # define Perl_isinf(x) Perl_fp_class_inf(x)
3028 #ifndef Perl_isfinite
3029 # if defined(HAS_ISFINITE) && !defined(isfinite)
3030 # define Perl_isfinite(x) isfinite((double)(x))
3031 # elif defined(HAS_FINITE)
3032 # define Perl_isfinite(x) finite((double)(x))
3033 # elif defined(Perl_fp_class_finite)
3034 # define Perl_isfinite(x) Perl_fp_class_finite(x)
3036 /* For the infinities the multiplication returns nan,
3037 * for the nan the multiplication also returns nan,
3038 * for everything else (that is, finite) zero should be returned. */
3039 # define Perl_isfinite(x) (((x) * 0) == 0)
3044 # if defined(Perl_isfinite) && defined(Perl_isnan)
3045 # define Perl_isinf(x) !(Perl_isfinite(x)||Perl_isnan(x))
3049 /* We need Perl_isfinitel (ends with ell) (if available) even when
3050 * not USE_LONG_DOUBLE because the printf code (sv_catpvfn_flags)
3052 #if defined(HAS_LONG_DOUBLE) && !defined(Perl_isfinitel)
3053 /* If isfinite() is a macro and looks like we have C99,
3054 * we assume it's the type-aware C99 isfinite(). */
3055 # if defined(HAS_ISFINITE) && defined(isfinite) && defined(HAS_C99)
3056 # define Perl_isfinitel(x) isfinite(x)
3057 # elif defined(HAS_ISFINITEL)
3058 # define Perl_isfinitel(x) isfinitel(x)
3059 # elif defined(HAS_FINITEL)
3060 # define Perl_isfinitel(x) finitel(x)
3061 # elif defined(HAS_ISINFL) && defined(HAS_ISNANL)
3062 # define Perl_isfinitel(x) !(isinfl(x)||isnanl(x))
3064 # define Perl_isfinitel(x) ((x) * 0 == 0) /* See Perl_isfinite. */
3068 /* The default is to use Perl's own atof() implementation (in numeric.c).
3069 * This knows about if 'use locale' is in effect or not, and handles the radix
3070 * character accordingly. On some platforms (e.g. UNICOS) it is however best
3071 * to use the native implementation of atof, as long as you accept that the
3072 * current underlying locale will affect the radix character. Perl's version
3073 * uses a dot for a radix, execpt within the lexical scope of a Perl C<use
3074 * locale> statement.
3076 * You can experiment with using your native one by -DUSE_PERL_ATOF=0.
3077 * Some good tests to try out with either setting are t/base/num.t,
3078 * t/op/numconvert.t, and t/op/pack.t. Note that if using long doubles
3079 * you may need to be using a different function than atof! */
3081 #ifndef USE_PERL_ATOF
3083 # define USE_PERL_ATOF
3086 # if USE_PERL_ATOF == 0
3087 # undef USE_PERL_ATOF
3091 #ifdef USE_PERL_ATOF
3092 # define Perl_atof(s) Perl_my_atof(aTHX_ s)
3093 # define Perl_atof2(s, n) Perl_my_atof3(aTHX_ (s), &(n), 0)
3095 # define Perl_atof(s) (NV)atof(s)
3096 # define Perl_atof2(s, n) ((n) = atof(s))
3098 #define my_atof2(a,b) my_atof3(a,b,0)
3101 =for apidoc AmTR|NV|Atof|NN const char * const s
3103 This is a synonym for L</C<my_atof>>.
3109 #define Atof my_atof
3112 =for apidoc_section $numeric
3113 =for apidoc AmT|NV|Perl_acos|NV x
3114 =for apidoc_item |NV|Perl_asin|NV x
3115 =for apidoc_item |NV|Perl_atan|NV x
3116 =for apidoc_item |NV|Perl_atan2|NV x|NV y
3117 =for apidoc_item |NV|Perl_ceil|NV x
3118 =for apidoc_item |NV|Perl_cos|NV x
3119 =for apidoc_item |NV|Perl_cosh|NV x
3120 =for apidoc_item |NV|Perl_exp|NV x
3121 =for apidoc_item |NV|Perl_floor|NV x
3122 =for apidoc_item |NV|Perl_fmod|NV x|NV y
3123 =for apidoc_item |NV|Perl_frexp|NV x|int *exp
3124 =for apidoc_item |IV|Perl_isfinite|NV x
3125 =for apidoc_item |IV|Perl_isinf|NV x
3126 =for apidoc_item |IV|Perl_isnan|NV x
3127 =for apidoc_item |NV|Perl_ldexp|NV x|int exp
3128 =for apidoc_item |NV|Perl_log|NV x
3129 =for apidoc_item |NV|Perl_log10|NV x
3130 =for apidoc_item |NV|Perl_modf|NV x|NV *iptr
3131 =for apidoc_item |NV|Perl_pow|NV x|NV y
3132 =for apidoc_item |NV|Perl_sin|NV x
3133 =for apidoc_item |NV|Perl_sinh|NV x
3134 =for apidoc_item |NV|Perl_sqrt|NV x
3135 =for apidoc_item |NV|Perl_tan|NV x
3136 =for apidoc_item |NV|Perl_tanh|NV x
3138 These perform the corresponding mathematical operation on the operand(s), using
3139 the libc function designed for the task that has just enough precision for an
3140 NV on this platform. If no such function with sufficient precision exists,
3141 the highest precision one available is used.
3148 * CHAR_MIN and CHAR_MAX are not included here, as the (char) type may be
3149 * ambiguous. It may be equivalent to (signed char) or (unsigned char)
3150 * depending on local options. Until Configure detects this (or at least
3151 * detects whether the "signed" keyword is available) the CHAR ranges
3152 * will not be included. UCHAR functions normally.
3156 #define PERL_UCHAR_MIN ((unsigned char)0)
3157 #define PERL_UCHAR_MAX ((unsigned char)UCHAR_MAX)
3159 #define PERL_USHORT_MIN ((unsigned short)0)
3160 #define PERL_USHORT_MAX ((unsigned short)USHRT_MAX)
3162 #define PERL_SHORT_MAX ((short)SHRT_MAX)
3163 #define PERL_SHORT_MIN ((short)SHRT_MIN)
3165 #define PERL_UINT_MAX ((unsigned int)UINT_MAX)
3166 #define PERL_UINT_MIN ((unsigned int)0)
3168 #define PERL_INT_MAX ((int)INT_MAX)
3169 #define PERL_INT_MIN ((int)INT_MIN)
3171 #define PERL_ULONG_MAX ((unsigned long)ULONG_MAX)
3172 #define PERL_ULONG_MIN ((unsigned long)0L)
3174 #define PERL_LONG_MAX ((long)LONG_MAX)
3175 #define PERL_LONG_MIN ((long)LONG_MIN)
3178 # define PERL_UQUAD_MAX (~(UV)0)
3179 # define PERL_UQUAD_MIN ((UV)0)
3180 # define PERL_QUAD_MAX ((IV) (PERL_UQUAD_MAX >> 1))
3181 # define PERL_QUAD_MIN (-PERL_QUAD_MAX - ((3 & -1) == 3))
3185 =for apidoc_section $integer
3187 =for apidoc Amn |int|PERL_INT_MAX
3188 =for apidoc_item |int|PERL_INT_MIN
3189 =for apidoc_item |long|PERL_LONG_MAX
3190 =for apidoc_item |long|PERL_LONG_MIN
3191 =for apidoc_item |IV|PERL_QUAD_MAX
3192 =for apidoc_item |IV|PERL_QUAD_MIN
3193 =for apidoc_item |short|PERL_SHORT_MAX
3194 =for apidoc_item |short|PERL_SHORT_MIN
3195 =for apidoc_item |U8|PERL_UCHAR_MAX
3196 =for apidoc_item |U8|PERL_UCHAR_MIN
3197 =for apidoc_item |unsigned int|PERL_UINT_MAX
3198 =for apidoc_item |unsigned int|PERL_UINT_MIN
3199 =for apidoc_item |unsigned long|PERL_ULONG_MAX
3200 =for apidoc_item |unsigned long|PERL_ULONG_MIN
3201 =for apidoc_item |UV|PERL_UQUAD_MAX
3202 =for apidoc_item |UV|PERL_UQUAD_MIN
3203 =for apidoc_item |unsigned short|PERL_USHORT_MAX
3204 =for apidoc_item |unsigned short|PERL_USHORT_MIN
3206 These give the largest and smallest number representable in the current
3207 platform in variables of the corresponding types.
3209 For signed types, the smallest representable number is the most negative
3210 number, the one furthest away from zero.
3212 For C99 and later compilers, these correspond to things like C<INT_MAX>, which
3213 are available to the C code. But these constants, furnished by Perl,
3214 allow code compiled on earlier compilers to portably have access to the same
3221 typedef MEM_SIZE STRLEN;
3223 typedef struct op OP;
3224 typedef struct cop COP;
3225 typedef struct unop UNOP;
3226 typedef struct unop_aux UNOP_AUX;
3227 typedef struct binop BINOP;
3228 typedef struct listop LISTOP;
3229 typedef struct logop LOGOP;
3230 typedef struct pmop PMOP;
3231 typedef struct svop SVOP;
3232 typedef struct padop PADOP;
3233 typedef struct pvop PVOP;
3234 typedef struct loop LOOP;
3235 typedef struct methop METHOP;
3238 typedef struct opslab OPSLAB;
3239 typedef struct opslot OPSLOT;
3242 typedef struct block_hooks BHK;
3243 typedef struct custom_op XOP;
3245 typedef struct interpreter PerlInterpreter;
3247 /* SGI's <sys/sema.h> has struct sv */
3249 # define STRUCT_SV perl_sv
3251 # define STRUCT_SV sv
3253 typedef struct STRUCT_SV SV;
3254 typedef struct av AV;
3255 typedef struct hv HV;
3256 typedef struct cv CV;
3257 typedef struct p5rx REGEXP;
3258 typedef struct gp GP;
3259 typedef struct gv GV;
3260 typedef struct io IO;
3261 typedef struct context PERL_CONTEXT;
3262 typedef struct block BLOCK;
3263 typedef struct invlist INVLIST;
3265 typedef struct magic MAGIC;
3266 typedef struct xpv XPV;
3267 typedef struct xpviv XPVIV;
3268 typedef struct xpvuv XPVUV;
3269 typedef struct xpvnv XPVNV;
3270 typedef struct xpvmg XPVMG;
3271 typedef struct xpvlv XPVLV;
3272 typedef struct xpvinvlist XINVLIST;
3273 typedef struct xpvav XPVAV;
3274 typedef struct xpvhv XPVHV;
3275 typedef struct xpvgv XPVGV;
3276 typedef struct xpvcv XPVCV;
3277 typedef struct xpvbm XPVBM;
3278 typedef struct xpvfm XPVFM;
3279 typedef struct xpvio XPVIO;
3280 typedef struct mgvtbl MGVTBL;
3281 typedef union any ANY;
3282 typedef struct ptr_tbl_ent PTR_TBL_ENT_t;
3283 typedef struct ptr_tbl PTR_TBL_t;
3284 typedef struct clone_params CLONE_PARAMS;
3286 /* a pad is currently just an AV; but that might change,
3287 * so hide the type. */
3288 typedef struct padlist PADLIST;
3290 typedef struct padnamelist PADNAMELIST;
3291 typedef struct padname PADNAME;
3293 /* always enable PERL_OP_PARENT */
3294 #if !defined(PERL_OP_PARENT)
3295 # define PERL_OP_PARENT
3298 /* enable PERL_COPY_ON_WRITE by default */
3299 #if !defined(PERL_COPY_ON_WRITE) && !defined(PERL_NO_COW)
3300 # define PERL_COPY_ON_WRITE
3303 #ifdef PERL_COPY_ON_WRITE
3304 # define PERL_ANY_COW
3306 # define PERL_SAWAMPERSAND
3309 #if defined(PERL_DEBUG_READONLY_OPS) && !defined(USE_ITHREADS)
3310 # error PERL_DEBUG_READONLY_OPS only works with ithreads
3314 #include "charclass_invlists.h"
3316 #if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_RAWIO)
3317 # if LSEEKSIZE == 8 && !defined(USE_64_BIT_RAWIO)
3318 # define USE_64_BIT_RAWIO /* implicit */
3322 /* Notice the use of HAS_FSEEKO: now we are obligated to always use
3323 * fseeko/ftello if possible. Don't go #defining ftell to ftello yourself,
3324 * however, because operating systems like to do that themself. */
3327 # define FSEEKSIZE LSEEKSIZE
3329 # define FSEEKSIZE LONGSIZE
3333 #if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_STDIO)
3334 # if FSEEKSIZE == 8 && !defined(USE_64_BIT_STDIO)
3335 # define USE_64_BIT_STDIO /* implicit */
3339 #ifdef USE_64_BIT_RAWIO
3342 # define Off_t off64_t
3344 # define LSEEKSIZE 8
3346 /* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
3347 * will trigger defines like the ones below. Some 64-bit environments,
3348 * however, do not. Therefore we have to explicitly mix and match. */
3349 # if defined(USE_OPEN64)
3350 # define open open64
3352 # if defined(USE_LSEEK64)
3353 # define lseek lseek64
3355 # if defined(USE_LLSEEK)
3356 # define lseek llseek
3359 # if defined(USE_STAT64)
3360 # define stat stat64
3362 # if defined(USE_FSTAT64)
3363 # define fstat fstat64
3365 # if defined(USE_LSTAT64)
3366 # define lstat lstat64
3368 # if defined(USE_FLOCK64)
3369 # define flock flock64
3371 # if defined(USE_LOCKF64)
3372 # define lockf lockf64
3374 # if defined(USE_FCNTL64)
3375 # define fcntl fcntl64
3377 # if defined(USE_TRUNCATE64)
3378 # define truncate truncate64
3380 # if defined(USE_FTRUNCATE64)
3381 # define ftruncate ftruncate64
3385 #ifdef USE_64_BIT_STDIO
3386 # ifdef HAS_FPOS64_T
3388 # define Fpos_t fpos64_t
3390 /* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
3391 * will trigger defines like the ones below. Some 64-bit environments,
3392 * however, do not. */
3393 # if defined(USE_FOPEN64)
3394 # define fopen fopen64
3396 # if defined(USE_FSEEK64)
3397 # define fseek fseek64 /* don't do fseeko here, see perlio.c */
3399 # if defined(USE_FTELL64)
3400 # define ftell ftell64 /* don't do ftello here, see perlio.c */
3402 # if defined(USE_FSETPOS64)
3403 # define fsetpos fsetpos64
3405 # if defined(USE_FGETPOS64)
3406 # define fgetpos fgetpos64
3408 # if defined(USE_TMPFILE64)
3409 # define tmpfile tmpfile64
3411 # if defined(USE_FREOPEN64)
3412 # define freopen freopen64
3417 # include "iperlsys.h"
3422 # include "os2ish.h"
3424 # include "dosish.h"
3427 # include "vmsish.h"
3428 #elif defined(PLAN9)
3429 # include "./plan9/plan9ish.h"
3430 #elif defined(__VOS__)
3432 # include "./vos/vosish.h"
3434 # include "vos/vosish.h"
3436 #elif defined(__HAIKU__)
3437 # include "haiku/haikuish.h"
3439 # include "unixish.h"
3443 # include "amigaos.h"
3444 # undef FD_CLOEXEC /* a lie in AmigaOS */
3447 /* NSIG logic from Configure --> */
3450 # define NSIG (_NSIG)
3451 # elif defined(SIGMAX)
3452 # define NSIG (SIGMAX+1)
3453 # elif defined(SIG_MAX)
3454 # define NSIG (SIG_MAX+1)
3455 # elif defined(_SIG_MAX)
3456 # define NSIG (_SIG_MAX+1)
3457 # elif defined(MAXSIG)
3458 # define NSIG (MAXSIG+1)
3459 # elif defined(MAX_SIG)
3460 # define NSIG (MAX_SIG+1)
3461 # elif defined(SIGARRAYSIZE)
3462 # define NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
3463 # elif defined(_sys_nsig)
3464 # define NSIG (_sys_nsig) /* Solaris 2.5 */
3466 /* Default to some arbitrary number that's big enough to get most
3467 * of the common signals. */
3471 /* <-- NSIG logic from Configure */
3473 #ifndef NO_ENVIRON_ARRAY
3474 # define USE_ENVIRON_ARRAY
3477 #if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
3478 /* having sigaction(2) means that the OS supports both 1-arg and 3-arg
3479 * signal handlers. But the perl core itself only fully supports 1-arg
3480 * handlers, so don't enable for now.
3481 * NB: POSIX::sigaction() supports both.
3483 * # define PERL_USE_3ARG_SIGHANDLER
3488 * This is an alias for the OS's siginfo_t, except that where the OS
3489 * doesn't support it, declare a dummy version instead. This allows us to
3490 * have signal handler functions which always have a Siginfo_t parameter
3491 * regardless of platform, (and which will just be passed a NULL value
3492 * where the OS doesn't support HAS_SIGACTION).
3495 #if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
3496 typedef siginfo_t Siginfo_t;
3498 #ifdef si_signo /* minix */
3508 * initialise to avoid floating-point exceptions from overflow, etc
3510 #ifndef PERL_FPU_INIT
3511 # ifdef HAS_FPSETMASK
3512 # if HAS_FLOATINGPOINT_H
3513 # include <floatingpoint.h>
3515 /* Some operating systems have this as a macro, which in turn expands to a comma
3516 expression, and the last sub-expression is something that gets calculated,
3517 and then they have the gall to warn that a value computed is not used. Hence
3519 # define PERL_FPU_INIT (void)fpsetmask(0)
3520 # elif defined(SIGFPE) && defined(SIG_IGN) && !defined(PERL_MICRO)
3521 # define PERL_FPU_INIT PL_sigfpe_saved = (Sighandler_t) signal(SIGFPE, SIG_IGN)
3522 # define PERL_FPU_PRE_EXEC { Sigsave_t xfpe; rsignal_save(SIGFPE, PL_sigfpe_saved, &xfpe);
3523 # define PERL_FPU_POST_EXEC rsignal_restore(SIGFPE, &xfpe); }
3525 # define PERL_FPU_INIT
3528 #ifndef PERL_FPU_PRE_EXEC
3529 # define PERL_FPU_PRE_EXEC {
3530 # define PERL_FPU_POST_EXEC }
3533 /* In Tru64 the cc -ieee enables the IEEE math but disables traps.
3534 * We need to reenable the "invalid" trap because otherwise generation
3535 * of NaN values leaves the IEEE fp flags in bad state, leaving any further
3536 * fp ops behaving strangely (Inf + 1 resulting in zero, for example). */
3538 # include <machine/fpu.h>
3539 # define PERL_SYS_FPU_INIT \
3541 ieee_set_fp_control(IEEE_TRAP_ENABLE_INV); \
3542 signal(SIGFPE, SIG_IGN); \
3545 /* In IRIX the default for Flush to Zero bit is true,
3546 * which means that results going below the minimum of normal
3547 * floating points go to zero, instead of going denormal/subnormal.
3548 * This is unlike almost any other system running Perl, so let's clear it.
3549 * [perl #123767] IRIX64 blead (ddce084a) opbasic/arith.t failure, originally
3550 * [perl #120426] small numbers shouldn't round to zero if they have extra floating digits
3552 * XXX The flush-to-zero behaviour should be a Configure scan.
3553 * To change the behaviour usually requires some system-specific
3554 * incantation, though, like the below. */
3556 # include <sys/fpu.h>
3557 # define PERL_SYS_FPU_INIT \
3559 union fpc_csr csr; \
3560 csr.fc_word = get_fpc_csr(); \
3561 csr.fc_struct.flush = 0; \
3562 set_fpc_csr(csr.fc_word); \
3566 #ifndef PERL_SYS_FPU_INIT
3567 # define PERL_SYS_FPU_INIT NOOP
3570 #ifndef PERL_SYS_INIT3_BODY
3571 # define PERL_SYS_INIT3_BODY(argvp,argcp,envp) PERL_SYS_INIT_BODY(argvp,argcp)
3575 =for apidoc_section $embedding
3577 =for apidoc Am|void|PERL_SYS_INIT |int *argc|char*** argv
3578 =for apidoc_item| |PERL_SYS_INIT3|int *argc|char*** argv|char*** env
3580 These provide system-specific tune up of the C runtime environment necessary to
3581 run Perl interpreters. Only one should be used, and it should be called only
3582 once, before creating any Perl interpreters.
3584 They differ in that C<PERL_SYS_INIT3> also initializes C<env>.
3586 =for apidoc Am|void|PERL_SYS_TERM|
3587 Provides system-specific clean up of the C runtime environment after
3588 running Perl interpreters. This should be called only once, after
3589 freeing any remaining Perl interpreters.
3594 #define PERL_SYS_INIT(argc, argv) Perl_sys_init(argc, argv)
3595 #define PERL_SYS_INIT3(argc, argv, env) Perl_sys_init3(argc, argv, env)
3596 #define PERL_SYS_TERM() Perl_sys_term()
3598 #ifndef PERL_WRITE_MSG_TO_CONSOLE
3599 # define PERL_WRITE_MSG_TO_CONSOLE(io, msg, len) PerlIO_write(io, msg, len)
3604 # ifdef _POSIX_PATH_MAX
3605 # if PATH_MAX > _POSIX_PATH_MAX
3606 /* POSIX 1990 (and pre) was ambiguous about whether PATH_MAX
3607 * included the null byte or not. Later amendments of POSIX,
3608 * XPG4, the Austin Group, and the Single UNIX Specification
3609 * all explicitly include the null byte in the PATH_MAX.
3610 * Ditto for _POSIX_PATH_MAX. */
3611 # define MAXPATHLEN PATH_MAX
3613 # define MAXPATHLEN _POSIX_PATH_MAX
3616 # define MAXPATHLEN (PATH_MAX+1)
3619 # define MAXPATHLEN 1024 /* Err on the large side. */
3623 /* clang Thread Safety Analysis/Annotations/Attributes
3624 * http://clang.llvm.org/docs/ThreadSafetyAnalysis.html
3626 * Available since clang 3.6-ish (appeared in 3.4, but shaky still in 3.5).
3627 * Apple XCode hijacks __clang_major__ and __clang_minor__
3628 * (6.1 means really clang 3.6), so needs extra hijinks
3629 * (could probably also test the contents of __apple_build_version__).
3631 #if defined(USE_ITHREADS) && defined(I_PTHREAD) && \
3632 defined(__clang__) && \
3634 ((!defined(__apple_build_version__) && \
3635 ((__clang_major__ == 3 && __clang_minor__ >= 6) || \
3636 (__clang_major__ >= 4))) || \
3637 (defined(__apple_build_version__) && \
3638 ((__clang_major__ == 6 && __clang_minor__ >= 1) || \
3639 (__clang_major__ >= 7))))
3640 # define PERL_TSA__(x) __attribute__((x))
3641 # define PERL_TSA_ACTIVE
3643 # define PERL_TSA__(x) /* No TSA, make TSA attributes no-ops. */
3644 # undef PERL_TSA_ACTIVE
3647 /* PERL_TSA_CAPABILITY() is used to annotate typedefs.
3648 * typedef old_type PERL_TSA_CAPABILITY("mutex") new_type;
3650 #define PERL_TSA_CAPABILITY(x) \
3651 PERL_TSA__(capability(x))
3653 /* In the below examples the mutex must be lexically visible, usually
3654 * either as global variables, or as function arguments. */
3656 /* PERL_TSA_GUARDED_BY() is used to annotate global variables.
3658 * Foo foo PERL_TSA_GUARDED_BY(mutex);
3660 #define PERL_TSA_GUARDED_BY(x) \
3661 PERL_TSA__(guarded_by(x))
3663 /* PERL_TSA_PT_GUARDED_BY() is used to annotate global pointers.
3664 * The data _behind_ the pointer is guarded.
3666 * Foo* ptr PERL_TSA_PT_GUARDED_BY(mutex);
3668 #define PERL_TSA_PT_GUARDED_BY(x) \
3669 PERL_TSA__(pt_guarded_by(x))
3671 /* PERL_TSA_REQUIRES() is used to annotate functions.
3672 * The caller MUST hold the resource when calling the function.
3674 * void Foo() PERL_TSA_REQUIRES(mutex);
3676 #define PERL_TSA_REQUIRES(x) \
3677 PERL_TSA__(requires_capability(x))
3679 /* PERL_TSA_EXCLUDES() is used to annotate functions.
3680 * The caller MUST NOT hold resource when calling the function.
3682 * EXCLUDES should be used when the function first acquires
3683 * the resource and then releases it. Use to avoid deadlock.
3685 * void Foo() PERL_TSA_EXCLUDES(mutex);
3687 #define PERL_TSA_EXCLUDES(x) \
3688 PERL_TSA__(locks_excluded(x))
3690 /* PERL_TSA_ACQUIRE() is used to annotate functions.
3691 * The caller MUST NOT hold the resource when calling the function,
3692 * and the function will acquire the resource.
3694 * void Foo() PERL_TSA_ACQUIRE(mutex);
3696 #define PERL_TSA_ACQUIRE(x) \
3697 PERL_TSA__(acquire_capability(x))
3699 /* PERL_TSA_RELEASE() is used to annotate functions.
3700 * The caller MUST hold the resource when calling the function,
3701 * and the function will release the resource.
3703 * void Foo() PERL_TSA_RELEASE(mutex);
3705 #define PERL_TSA_RELEASE(x) \
3706 PERL_TSA__(release_capability(x))
3708 /* PERL_TSA_NO_TSA is used to annotate functions.
3709 * Used when being intentionally unsafe, or when the code is too
3710 * complicated for the analysis. Use sparingly.
3712 * void Foo() PERL_TSA_NO_TSA;
3714 #define PERL_TSA_NO_TSA \
3715 PERL_TSA__(no_thread_safety_analysis)
3717 /* There are more annotations/attributes available, see the clang
3718 * documentation for details. */
3720 #if defined(USE_ITHREADS)
3722 # include <win32thread.h>
3724 # include "os2thread.h"
3725 # elif defined(I_MACH_CTHREADS)
3726 # include <mach/cthreads.h>
3727 typedef cthread_t perl_os_thread;
3728 typedef mutex_t perl_mutex;
3729 typedef condition_t perl_cond;
3730 typedef void * perl_key;
3731 # elif defined(I_PTHREAD) /* Posix threads */
3732 # include <pthread.h>
3733 typedef pthread_t perl_os_thread;
3734 typedef pthread_mutex_t PERL_TSA_CAPABILITY("mutex") perl_mutex;
3735 typedef pthread_cond_t perl_cond;
3736 typedef pthread_key_t perl_key;
3739 /* Many readers; single writer */
3743 SSize_t readers_count;
3744 } perl_RnW1_mutex_t;
3747 #endif /* USE_ITHREADS */
3749 #ifdef PERL_TSA_ACTIVE
3750 /* Since most pthread mutex interfaces have not been annotated, we
3751 * need to have these wrappers. The NO_TSA annotation is quite ugly
3752 * but it cannot be avoided in plain C, unlike in C++, where one could
3753 * e.g. use ACQUIRE() with no arg on a mutex lock method.
3755 * The bodies of these wrappers are in util.c
3757 * TODO: however, some platforms are starting to get these clang
3758 * thread safety annotations for pthreads, for example FreeBSD.
3759 * Do we need a way to a bypass these wrappers? */
3760 EXTERN_C int perl_tsa_mutex_lock(perl_mutex* mutex)
3761 PERL_TSA_ACQUIRE(*mutex)
3763 EXTERN_C int perl_tsa_mutex_unlock(perl_mutex* mutex)
3764 PERL_TSA_RELEASE(*mutex)
3772 #define STATUS_UNIX PL_statusvalue
3774 # define STATUS_NATIVE PL_statusvalue_vms
3776 * vaxc$errno is only guaranteed to be valid if errno == EVMSERR, otherwise
3777 * its contents can not be trusted. Unfortunately, Perl seems to check
3778 * it on exit, so it when PL_statusvalue_vms is updated, vaxc$errno should
3781 # include <stsdef.h>
3783 /* Presume this because if VMS changes it, it will require a new
3784 * set of APIs for waiting on children for binary compatibility.
3786 # define child_offset_bits (8)
3787 # ifndef C_FAC_POSIX
3788 # define C_FAC_POSIX 0x35A000
3791 /* STATUS_EXIT - validates and returns a NATIVE exit status code for the
3792 * platform from the existing UNIX or Native status values.
3795 # define STATUS_EXIT \
3796 (((I32)PL_statusvalue_vms == -1 ? SS$_ABORT : PL_statusvalue_vms) | \
3797 (VMSISH_HUSHED ? STS$M_INHIB_MSG : 0))
3800 /* STATUS_NATIVE_CHILD_SET - Calculate UNIX status that matches the child
3801 * exit code and shifts the UNIX value over the correct number of bits to
3802 * be a child status. Usually the number of bits is 8, but that could be
3803 * platform dependent. The NATIVE status code is presumed to have either
3804 * from a child process.
3807 /* This is complicated. The child processes return a true native VMS
3808 status which must be saved. But there is an assumption in Perl that
3809 the UNIX child status has some relationship to errno values, so
3810 Perl tries to translate it to text in some of the tests.
3811 In order to get the string translation correct, for the error, errno
3812 must be EVMSERR, but that generates a different text message
3813 than what the test programs are expecting. So an errno value must
3814 be derived from the native status value when an error occurs.
3815 That will hide the true native status message. With this version of
3816 perl, the true native child status can always be retrieved so that
3817 is not a problem. But in this case, Pl_statusvalue and errno may
3818 have different values in them.
3821 # define STATUS_NATIVE_CHILD_SET(n) \
3823 I32 evalue = (I32)n; \
3824 if (evalue == EVMSERR) { \
3825 PL_statusvalue_vms = vaxc$errno; \
3826 PL_statusvalue = evalue; \
3828 PL_statusvalue_vms = evalue; \
3829 if (evalue == -1) { \
3830 PL_statusvalue = -1; \
3831 PL_statusvalue_vms = SS$_ABORT; /* Should not happen */ \
3833 PL_statusvalue = Perl_vms_status_to_unix(evalue, 1); \
3834 set_vaxc_errno(evalue); \
3835 if ((PL_statusvalue_vms & C_FAC_POSIX) == C_FAC_POSIX) \
3836 set_errno(EVMSERR); \
3837 else set_errno(Perl_vms_status_to_unix(evalue, 0)); \
3838 PL_statusvalue = PL_statusvalue << child_offset_bits; \
3842 # ifdef VMSISH_STATUS
3843 # define STATUS_CURRENT (VMSISH_STATUS ? STATUS_NATIVE : STATUS_UNIX)
3845 # define STATUS_CURRENT STATUS_UNIX
3848 /* STATUS_UNIX_SET - takes a UNIX/POSIX errno value and attempts to update
3849 * the NATIVE status to an equivalent value. Can not be used to translate
3850 * exit code values as exit code values are not guaranteed to have any
3851 * relationship at all to errno values.
3852 * This is used when Perl is forcing errno to have a specific value.
3854 # define STATUS_UNIX_SET(n) \
3856 I32 evalue = (I32)n; \
3857 PL_statusvalue = evalue; \
3858 if (PL_statusvalue != -1) { \
3859 if (PL_statusvalue != EVMSERR) { \
3860 PL_statusvalue &= 0xFFFF; \
3861 if (MY_POSIX_EXIT) \
3862 PL_statusvalue_vms=PL_statusvalue ? SS$_ABORT : SS$_NORMAL;\
3863 else PL_statusvalue_vms = Perl_unix_status_to_vms(evalue); \
3866 PL_statusvalue_vms = vaxc$errno; \
3869 else PL_statusvalue_vms = SS$_ABORT; \
3870 set_vaxc_errno(PL_statusvalue_vms); \
3873 /* STATUS_UNIX_EXIT_SET - Takes a UNIX/POSIX exit code and sets
3874 * the NATIVE error status based on it.
3876 * When in the default mode to comply with the Perl VMS documentation,
3877 * 0 is a success and any other code sets the NATIVE status to a failure
3878 * code of SS$_ABORT.
3880 * In the new POSIX EXIT mode, native status will be set so that the
3881 * actual exit code will can be retrieved by the calling program or
3884 * If the exit code is not clearly a UNIX parent or child exit status,
3885 * it will be passed through as a VMS status.
3888 # define STATUS_UNIX_EXIT_SET(n) \
3890 I32 evalue = (I32)n; \
3891 PL_statusvalue = evalue; \
3892 if (MY_POSIX_EXIT) { \
3893 if (evalue <= 0xFF00) { \
3894 if (evalue > 0xFF) \
3895 evalue = ((U8) (evalue >> child_offset_bits)); \
3896 PL_statusvalue_vms = \
3897 (C_FAC_POSIX | (evalue << 3 ) | \
3898 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1)); \
3899 } else /* forgive them Perl, for they have sinned */ \
3900 PL_statusvalue_vms = evalue; \
3903 PL_statusvalue_vms = SS$_NORMAL; \
3904 else if (evalue <= 0xFF00) \
3905 PL_statusvalue_vms = SS$_ABORT; \
3906 else { /* forgive them Perl, for they have sinned */ \
3907 if (evalue != EVMSERR) PL_statusvalue_vms = evalue; \
3908 else PL_statusvalue_vms = vaxc$errno; \
3909 /* And obviously used a VMS status value instead of UNIX */ \
3910 PL_statusvalue = EVMSERR; \
3912 set_vaxc_errno(PL_statusvalue_vms); \
3917 /* STATUS_EXIT_SET - Takes a NATIVE/UNIX/POSIX exit code
3918 * and sets the NATIVE error status based on it. This special case
3919 * is needed to maintain compatibility with past VMS behavior.
3921 * In the default mode on VMS, this number is passed through as
3922 * both the NATIVE and UNIX status. Which makes it different
3923 * that the STATUS_UNIX_EXIT_SET.
3925 * In the new POSIX EXIT mode, native status will be set so that the
3926 * actual exit code will can be retrieved by the calling program or
3929 * A POSIX exit code is from 0 to 255. If the exit code is higher
3930 * than this, it needs to be assumed that it is a VMS exit code and
3934 # define STATUS_EXIT_SET(n) \
3936 I32 evalue = (I32)n; \
3937 PL_statusvalue = evalue; \
3938 if (MY_POSIX_EXIT) \
3939 if (evalue > 255) PL_statusvalue_vms = evalue; else { \
3940 PL_statusvalue_vms = \
3941 (C_FAC_POSIX | (evalue << 3 ) | \
3942 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1));} \
3944 PL_statusvalue_vms = evalue ? evalue : SS$_NORMAL; \
3945 set_vaxc_errno(PL_statusvalue_vms); \
3949 /* This macro forces a success status */
3950 # define STATUS_ALL_SUCCESS \
3951 (PL_statusvalue = 0, PL_statusvalue_vms = SS$_NORMAL)
3953 /* This macro forces a failure status */
3954 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, \
3955 vaxc$errno = PL_statusvalue_vms = MY_POSIX_EXIT ? \
3956 (C_FAC_POSIX | (1 << 3) | STS$K_ERROR | STS$M_INHIB_MSG) : SS$_ABORT)
3958 #elif defined(__amigaos4__)
3959 /* A somewhat experimental attempt to simulate posix return code values */
3960 # define STATUS_NATIVE PL_statusvalue_posix
3961 # define STATUS_NATIVE_CHILD_SET(n) \
3963 PL_statusvalue_posix = (n); \
3964 if (PL_statusvalue_posix < 0) { \
3965 PL_statusvalue = -1; \
3968 PL_statusvalue = n << 8; \
3971 # define STATUS_UNIX_SET(n) \
3973 PL_statusvalue = (n); \
3974 if (PL_statusvalue != -1) \
3975 PL_statusvalue &= 0xFFFF; \
3977 # define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
3978 # define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
3979 # define STATUS_CURRENT STATUS_UNIX
3980 # define STATUS_EXIT STATUS_UNIX
3981 # define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3982 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
3985 # define STATUS_NATIVE PL_statusvalue_posix
3986 # if defined(WCOREDUMP)
3987 # define STATUS_NATIVE_CHILD_SET(n) \
3989 PL_statusvalue_posix = (n); \
3990 if (PL_statusvalue_posix == -1) \
3991 PL_statusvalue = -1; \
3994 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3995 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0) | \
3996 (WIFSIGNALED(PL_statusvalue_posix) && WCOREDUMP(PL_statusvalue_posix) ? 0x80 : 0); \
3999 # elif defined(WIFEXITED)
4000 # define STATUS_NATIVE_CHILD_SET(n) \
4002 PL_statusvalue_posix = (n); \
4003 if (PL_statusvalue_posix == -1) \
4004 PL_statusvalue = -1; \
4007 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
4008 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0); \
4012 # define STATUS_NATIVE_CHILD_SET(n) \
4014 PL_statusvalue_posix = (n); \
4015 if (PL_statusvalue_posix == -1) \
4016 PL_statusvalue = -1; \
4019 PL_statusvalue_posix & 0xFFFF; \
4023 # define STATUS_UNIX_SET(n) \
4025 PL_statusvalue = (n); \
4026 if (PL_statusvalue != -1) \
4027 PL_statusvalue &= 0xFFFF; \
4029 # define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
4030 # define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
4031 # define STATUS_CURRENT STATUS_UNIX
4032 # define STATUS_EXIT STATUS_UNIX
4033 # define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
4034 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
4037 /* flags in PL_exit_flags for nature of exit() */
4038 #define PERL_EXIT_EXPECTED 0x01
4039 #define PERL_EXIT_DESTRUCT_END 0x02 /* Run END in perl_destruct */
4040 #define PERL_EXIT_WARN 0x04 /* Warn if Perl_my_exit() or Perl_my_failure_exit() called */
4041 #define PERL_EXIT_ABORT 0x08 /* Call abort() if Perl_my_exit() or Perl_my_failure_exit() called */
4044 /* format to use for version numbers in file/directory names */
4045 /* XXX move to Configure? */
4046 /* This was only ever used for the current version, and that can be done at
4047 compile time, as PERL_FS_VERSION, so should we just delete it? */
4048 # ifndef PERL_FS_VER_FMT
4049 # define PERL_FS_VER_FMT "%d.%d.%d"
4053 #ifndef PERL_FS_VERSION
4054 # define PERL_FS_VERSION PERL_VERSION_STRING
4059 =for apidoc_section $io
4060 =for apidoc Amn|void|PERL_FLUSHALL_FOR_CHILD
4062 This defines a way to flush all output buffers. This may be a
4063 performance issue, so we allow people to disable it. Also, if
4064 we are using stdio, there are broken implementations of fflush(NULL)
4065 out there, Solaris being the most prominent.
4070 #ifndef PERL_FLUSHALL_FOR_CHILD
4071 # if defined(USE_PERLIO) || defined(FFLUSH_NULL)
4072 # define PERL_FLUSHALL_FOR_CHILD PerlIO_flush((PerlIO*)NULL)
4073 # elif defined(FFLUSH_ALL)
4074 # define PERL_FLUSHALL_FOR_CHILD my_fflush_all()
4076 # define PERL_FLUSHALL_FOR_CHILD NOOP
4080 #ifndef PERL_WAIT_FOR_CHILDREN
4081 # define PERL_WAIT_FOR_CHILDREN NOOP
4084 /* the traditional thread-unsafe notion of "current interpreter". */
4085 #ifndef PERL_SET_INTERP
4086 # define PERL_SET_INTERP(i) (PL_curinterp = (PerlInterpreter*)(i))
4089 #ifndef PERL_GET_INTERP
4090 # define PERL_GET_INTERP (PL_curinterp)
4093 #if defined(MULTIPLICITY) && !defined(PERL_GET_THX)
4094 # define PERL_GET_THX ((PerlInterpreter *)PERL_GET_CONTEXT)
4095 # define PERL_SET_THX(t) PERL_SET_CONTEXT(t)
4099 This replaces the previous %_ "hack" by the "%p" hacks.
4100 All that is required is that the perl source does not
4101 use "%-p" or "%-<number>p" or "%<number>p" formats.
4102 These formats will still work in perl code.
4103 See comments in sv.c for further details.
4105 Robin Barker 2005-07-14
4107 No longer use %1p for VDf = %vd. RMB 2007-10-19
4111 # define SVf_(n) "-" STRINGIFY(n) "p"
4119 # define SVf32 SVf_(32)
4123 # define SVf256 SVf_(256)
4126 #define SVfARG(p) ((void*)(p))
4132 /* Not ideal, but we cannot easily include a number in an already-numeric
4133 * format sequence. */
4135 # define HEKf256 "3p"
4138 #define HEKfARG(p) ((void*)(p))
4140 /* Documented in perlguts
4142 * %4p is a custom format
4145 # define UTF8f "d%" UVuf "%4p"
4147 #define UTF8fARG(u,l,p) (int)cBOOL(u), (UV)(l), (void*)(p)
4150 #define PNfARG(pn) (int)1, (UV)PadnameLEN(pn), (void *)PadnamePV(pn)
4153 /* not used; but needed for backward compatibility with XS code? - RMB
4154 =for apidoc_section $io_formats
4155 =for apidoc AmnD|const char *|UVf
4157 Obsolete form of C<UVuf>, which you should convert to instead use
4166 #if !defined(DEBUGGING) && !defined(NDEBUG)
4171 /* For functions that are marked as __attribute__noreturn__, it's not
4172 appropriate to call return. In either case, include the lint directive.
4174 #ifdef HASATTRIBUTE_NORETURN
4175 # define NORETURN_FUNCTION_END NOT_REACHED;
4177 # define NORETURN_FUNCTION_END NOT_REACHED; return 0
4180 #ifdef HAS_BUILTIN_EXPECT
4181 # define EXPECT(expr,val) __builtin_expect(expr,val)
4183 # define EXPECT(expr,val) (expr)
4187 =for apidoc_section $directives
4189 =for apidoc Am||LIKELY|bool expr
4191 Returns the input unchanged, but at the same time it gives a branch prediction
4192 hint to the compiler that this condition is likely to be true.
4194 =for apidoc Am||UNLIKELY|bool expr
4196 Returns the input unchanged, but at the same time it gives a branch prediction
4197 hint to the compiler that this condition is likely to be false.
4201 #define LIKELY(cond) EXPECT(cBOOL(cond),TRUE)
4202 #define UNLIKELY(cond) EXPECT(cBOOL(cond),FALSE)
4204 #ifdef HAS_BUILTIN_CHOOSE_EXPR
4208 /* STATIC_ASSERT_DECL/STATIC_ASSERT_STMT are like assert(), but for compile
4209 time invariants. That is, their argument must be a constant expression that
4210 can be verified by the compiler. This expression can contain anything that's
4211 known to the compiler, e.g. #define constants, enums, or sizeof (...). If
4212 the expression evaluates to 0, compilation fails.
4213 Because they generate no runtime code (i.e. their use is "free"), they're
4214 always active, even under non-DEBUGGING builds.
4215 STATIC_ASSERT_DECL expands to a declaration and is suitable for use at
4216 file scope (outside of any function).
4217 STATIC_ASSERT_STMT expands to a statement and is suitable for use inside a
4220 #if (! defined(__IBMC__) || __IBMC__ >= 1210) \
4221 && (( defined(static_assert) && ( defined(_ISOC11_SOURCE) \
4222 || (__STDC_VERSION__ - 0) >= 201101L)) \
4223 || (defined(__cplusplus) && __cplusplus >= 201103L))
4224 /* XXX static_assert is a macro defined in <assert.h> in C11 or a compiler
4225 builtin in C++11. But IBM XL C V11 does not support _Static_assert, no
4226 matter what <assert.h> says.
4228 # define STATIC_ASSERT_DECL(COND) static_assert(COND, #COND)
4230 /* We use a bit-field instead of an array because gcc accepts
4231 'typedef char x[n]' where n is not a compile-time constant.
4232 We want to enforce constantness.
4234 # define STATIC_ASSERT_2(COND, SUFFIX) \
4236 unsigned int _static_assertion_failed_##SUFFIX : (COND) ? 1 : -1; \
4237 } _static_assertion_failed_##SUFFIX PERL_UNUSED_DECL
4238 # define STATIC_ASSERT_1(COND, SUFFIX) STATIC_ASSERT_2(COND, SUFFIX)
4239 # define STATIC_ASSERT_DECL(COND) STATIC_ASSERT_1(COND, __LINE__)
4241 /* We need this wrapper even in C11 because 'case X: static_assert(...);' is an
4242 error (static_assert is a declaration, and only statements can have labels).
4244 #define STATIC_ASSERT_STMT(COND) STMT_START { STATIC_ASSERT_DECL(COND); } STMT_END
4246 #ifndef __has_builtin
4247 # define __has_builtin(x) 0 /* not a clang style compiler */
4251 =for apidoc Am||ASSUME|bool expr
4252 C<ASSUME> is like C<assert()>, but it has a benefit in a release build. It is a
4253 hint to a compiler about a statement of fact in a function call free
4254 expression, which allows the compiler to generate better machine code. In a
4255 debug build, C<ASSUME(x)> is a synonym for C<assert(x)>. C<ASSUME(0)> means the
4256 control path is unreachable. In a for loop, C<ASSUME> can be used to hint that
4257 a loop will run at least X times. C<ASSUME> is based off MSVC's C<__assume>
4258 intrinsic function, see its documents for more details.
4263 #if __has_builtin(__builtin_unreachable)
4264 # define HAS_BUILTIN_UNREACHABLE
4265 #elif PERL_GCC_VERSION_GE(4,5,0)
4266 # define HAS_BUILTIN_UNREACHABLE
4270 # define ASSUME(x) assert(x)
4271 #elif __has_builtin(__builtin_assume)
4272 # if defined(__clang__) || defined(__clang)
4273 # define ASSUME(x) CLANG_DIAG_IGNORE(-Wassume) \
4274 __builtin_assume (x) \
4277 # define ASSUME(x) __builtin_assume(x)
4279 #elif defined(_MSC_VER)
4280 # define ASSUME(x) __assume(x)
4281 #elif defined(__ARMCC_VERSION) /* untested */
4282 # define ASSUME(x) __promise(x)
4283 #elif defined(HAS_BUILTIN_UNREACHABLE)
4284 /* Compilers can take the hint from something being unreachable */
4285 # define ASSUME(x) ((x) ? (void) 0 : __builtin_unreachable())
4287 /* Not DEBUGGING, so assert() is a no-op, but a random compiler might
4288 * define assert() to its own special optimization token so pass it through
4289 * to C lib as a last resort */
4290 # define ASSUME(x) assert(x)
4293 #ifdef HAS_BUILTIN_UNREACHABLE
4294 # define NOT_REACHED \
4296 ASSUME(!"UNREACHABLE"); __builtin_unreachable(); \
4298 # undef HAS_BUILTIN_UNREACHABLE /* Don't leak out this internal symbol */
4299 #elif ! defined(__GNUC__) && (defined(__sun) || defined(__hpux))
4300 /* These just complain that NOT_REACHED isn't reached */
4301 # define NOT_REACHED
4303 # define NOT_REACHED ASSUME(!"UNREACHABLE")
4306 /* Some unistd.h's give a prototype for pause() even though
4307 HAS_PAUSE ends up undefined. This causes the #define
4308 below to be rejected by the compiler. Sigh.
4313 #define Pause() sleep((32767<<16)+32767)
4317 # ifdef IOCPARM_MASK
4318 /* on BSDish systems we're safe */
4319 # define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
4320 # elif defined(_IOC_SIZE) && defined(__GLIBC__)
4321 /* on Linux systems we're safe; except when we're not [perl #38223] */
4322 # define IOCPARM_LEN(x) (_IOC_SIZE(x) < 256 ? 256 : _IOC_SIZE(x))
4324 /* otherwise guess at what's safe */
4325 # define IOCPARM_LEN(x) 256
4329 #if defined(__CYGWIN__)
4331 * This symbol, if defined, indicates that the program should
4332 * use the routine my_binmode(FILE *fp, char iotype, int mode) to insure
4333 * that a file is in "binary" mode -- that is, that no translation
4334 * of bytes occurs on read or write operations.
4336 # define USEMYBINMODE /**/
4337 # include <io.h> /* for setmode() prototype */
4338 # define my_binmode(fp, iotype, mode) \
4339 cBOOL(PerlLIO_setmode(fileno(fp), mode) != -1)
4343 void init_os_extras(void);
4346 #ifdef UNION_ANY_DEFINITION
4347 UNION_ANY_DEFINITION;
4365 void (*any_dptr) (void*);
4366 void (*any_dxptr) (pTHX_ void*);
4370 typedef I32 (*filter_t) (pTHX_ int, SV *, int);
4372 #define FILTER_READ(idx, sv, len) filter_read(idx, sv, len)
4373 #define FILTER_DATA(idx) \
4374 (PL_parser ? AvARRAY(PL_parser->rsfp_filters)[idx] : NULL)
4375 #define FILTER_ISREADER(idx) \
4376 (PL_parser && PL_parser->rsfp_filters \
4377 && idx >= AvFILLp(PL_parser->rsfp_filters))
4378 #define PERL_FILTER_EXISTS(i) \
4379 (PL_parser && PL_parser->rsfp_filters \
4380 && (Size_t) (i) < av_count(PL_parser->rsfp_filters))
4382 #if defined(_AIX) && !defined(_AIX43)
4383 #if defined(USE_REENTRANT) || defined(_REENTRANT) || defined(_THREAD_SAFE)
4384 /* We cannot include <crypt.h> to get the struct crypt_data
4385 * because of setkey prototype problems when threading */
4386 typedef struct crypt_data { /* straight from /usr/include/crypt.h */
4387 /* From OSF, Not needed in AIX
4395 #endif /* threading */
4398 #ifndef PERL_CALLCONV
4400 # define PERL_CALLCONV EXTERN_C
4402 # define PERL_CALLCONV
4405 #ifndef PERL_CALLCONV_NO_RET
4406 # define PERL_CALLCONV_NO_RET PERL_CALLCONV
4409 /* PERL_STATIC_NO_RET is supposed to be equivalent to STATIC on builds that
4410 dont have a noreturn as a declaration specifier
4412 #ifndef PERL_STATIC_NO_RET
4413 # define PERL_STATIC_NO_RET STATIC
4416 /* PERL_STATIC_INLINE_NO_RET is supposed to be equivalent to PERL_STATIC_INLINE
4417 * on builds that dont have a noreturn as a declaration specifier
4419 #ifndef PERL_STATIC_INLINE_NO_RET
4420 # define PERL_STATIC_INLINE_NO_RET PERL_STATIC_INLINE
4423 #ifndef PERL_STATIC_FORCE_INLINE
4424 # define PERL_STATIC_FORCE_INLINE PERL_STATIC_INLINE
4427 #ifndef PERL_STATIC_FORCE_INLINE_NO_RET
4428 # define PERL_STATIC_FORCE_INLINE_NO_RET PERL_STATIC_INLINE
4432 # include "iperlsys.h"
4435 #ifdef __LIBCATAMOUNT__
4436 #undef HAS_PASSWD /* unixish.h but not unixish enough. */
4438 #define FAKE_BIT_BUCKET
4441 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0.
4442 * Note that the USE_HASH_SEED and similar defines are *NOT* defined by
4443 * Configure, despite their names being similar to other defines like
4444 * USE_ITHREADS. Configure in fact knows nothing about the randomised
4445 * hashes. Therefore to enable/disable the hash randomisation defines
4446 * use the Configure -Accflags=... instead. */
4447 #if !defined(NO_HASH_SEED) && !defined(USE_HASH_SEED)
4448 # define USE_HASH_SEED
4454 /* macros to define bit-fields in structs. */
4455 #ifndef PERL_BITFIELD8
4456 # ifdef HAS_NON_INT_BITFIELDS
4457 # define PERL_BITFIELD8 U8
4459 # define PERL_BITFIELD8 unsigned
4462 #ifndef PERL_BITFIELD16
4463 # ifdef HAS_NON_INT_BITFIELDS
4464 # define PERL_BITFIELD16 U16
4466 # define PERL_BITFIELD16 unsigned
4469 #ifndef PERL_BITFIELD32
4470 # ifdef HAS_NON_INT_BITFIELDS
4471 # define PERL_BITFIELD32 U32
4473 # define PERL_BITFIELD32 unsigned
4484 #include "opnames.h"
4491 #include "warnings.h"
4494 /* these would be in doio.h if there was such a file */
4495 #define my_stat() my_stat_flags(SV_GMAGIC)
4496 #define my_lstat() my_lstat_flags(SV_GMAGIC)
4498 /* defined in sv.c, but also used in [ach]v.c */
4501 #undef _XPVCV_COMMON
4505 typedef struct magic_state MGS; /* struct magic_state defined in mg.c */
4507 #if defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_REGEXEC_C) \
4508 || defined(PERL_EXT_RE_BUILD)
4510 /* These have to be predeclared, as they are used in proto.h which is #included
4511 * before their definitions in regcomp.h. */
4514 typedef struct regnode_charclass regnode_charclass;
4516 /* A hopefully less confusing name. The sub-classes are all Posix classes only
4517 * used under /l matching */
4518 typedef struct regnode_charclass_posixl regnode_charclass_class;
4519 typedef struct regnode_charclass_posixl regnode_charclass_posixl;
4521 typedef struct regnode_ssc regnode_ssc;
4522 typedef struct RExC_state_t RExC_state_t;
4523 struct _reg_trie_data;
4527 struct ptr_tbl_ent {
4528 struct ptr_tbl_ent* next;
4534 struct ptr_tbl_ent** tbl_ary;
4537 struct ptr_tbl_arena *tbl_arena;
4538 struct ptr_tbl_ent *tbl_arena_next;
4539 struct ptr_tbl_ent *tbl_arena_end;
4542 #if defined(htonl) && !defined(HAS_HTONL)
4545 #if defined(htons) && !defined(HAS_HTONS)
4548 #if defined(ntohl) && !defined(HAS_NTOHL)
4551 #if defined(ntohs) && !defined(HAS_NTOHS)
4559 # if (BYTEORDER & 0xffff) == 0x4321
4560 /* Big endian system, so ntohl, ntohs, htonl and htons do not need to
4561 re-order their values. However, to behave identically to the alternative
4562 implementations, they should truncate to the correct size. */
4563 # define ntohl(x) ((x)&0xFFFFFFFF)
4564 # define htonl(x) ntohl(x)
4565 # define ntohs(x) ((x)&0xFFFF)
4566 # define htons(x) ntohs(x)
4567 # elif BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
4569 /* Note that we can't straight out declare our own htonl and htons because
4570 the Win32 build process forcibly undefines HAS_HTONL etc for its miniperl,
4571 to avoid the overhead of initialising the socket subsystem, but the headers
4572 that *declare* the various functions are still seen. If we declare our own
4573 htonl etc they will clash with the declarations in the Win32 headers. */
4575 PERL_STATIC_INLINE U32
4576 my_swap32(const U32 x) {
4577 return ((x & 0xFF) << 24) | ((x >> 24) & 0xFF)
4578 | ((x & 0x0000FF00) << 8) | ((x & 0x00FF0000) >> 8);
4581 PERL_STATIC_INLINE U16
4582 my_swap16(const U16 x) {
4583 return ((x & 0xFF) << 8) | ((x >> 8) & 0xFF);
4586 # define htonl(x) my_swap32(x)
4587 # define ntohl(x) my_swap32(x)
4588 # define ntohs(x) my_swap16(x)
4589 # define htons(x) my_swap16(x)
4591 # error "Unsupported byteorder"
4592 /* The C pre-processor doesn't let us return the value of BYTEORDER as part of
4593 the error message. Please check the value of the macro BYTEORDER, as defined
4594 in config.h. The values of BYTEORDER we expect are
4596 big endian little endian
4597 32 bit 0x4321 0x1234
4598 64 bit 0x87654321 0x12345678
4600 If you have a system with a different byte order, please see
4601 pod/perlhack.pod for how to submit a patch to add supporting code.
4607 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
4610 #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
4611 /* Little endian system, so vtohl, vtohs, htovl and htovs do not need to
4612 re-order their values. However, to behave identically to the alternative
4613 implementations, they should truncate to the correct size. */
4614 # define vtohl(x) ((x)&0xFFFFFFFF)
4615 # define vtohs(x) ((x)&0xFFFF)
4616 # define htovl(x) vtohl(x)
4617 # define htovs(x) vtohs(x)
4618 #elif BYTEORDER == 0x4321 || BYTEORDER == 0x87654321
4619 # define vtohl(x) ((((x)&0xFF)<<24) \
4621 +(((x)&0x0000FF00)<<8) \
4622 +(((x)&0x00FF0000)>>8) )
4623 # define vtohs(x) ((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
4624 # define htovl(x) vtohl(x)
4625 # define htovs(x) vtohs(x)
4627 # error "Unsupported byteorder"
4628 /* If you have need for current perl on PDP-11 or similar, and can help test
4629 that blead keeps working on a mixed-endian system, then see
4630 pod/perlhack.pod for how to submit patches to things working again. */
4633 /* *MAX Plus 1. A floating point value.
4634 Hopefully expressed in a way that dodgy floating point can't mess up.
4635 >> 2 rather than 1, so that value is safely less than I32_MAX after 1
4637 May find that some broken compiler will want the value cast to I32.
4638 [after the shift, as signed >> may not be as secure as unsigned >>]
4640 #define I32_MAX_P1 (2.0 * (1 + (((U32)I32_MAX) >> 1)))
4641 #define U32_MAX_P1 (4.0 * (1 + ((U32_MAX) >> 2)))
4642 /* For compilers that can't correctly cast NVs over 0x7FFFFFFF (or
4643 0x7FFFFFFFFFFFFFFF) to an unsigned integer. In the future, sizeof(UV)
4644 may be greater than sizeof(IV), so don't assume that half max UV is max IV.
4646 #define U32_MAX_P1_HALF (2.0 * (1 + ((U32_MAX) >> 2)))
4648 #define UV_MAX_P1 (4.0 * (1 + ((UV_MAX) >> 2)))
4649 #define IV_MAX_P1 (2.0 * (1 + (((UV)IV_MAX) >> 1)))
4650 #define UV_MAX_P1_HALF (2.0 * (1 + ((UV_MAX) >> 2)))
4652 /* This may look like unnecessary jumping through hoops, but converting
4653 out of range floating point values to integers *is* undefined behaviour,
4654 and it is starting to bite.
4656 =for apidoc_section $casting
4657 =for apidoc Am|I32|I_32|NV what
4658 Cast an NV to I32 while avoiding undefined C behavior
4660 =for apidoc Am|U32|U_32|NV what
4661 Cast an NV to U32 while avoiding undefined C behavior
4663 =for apidoc Am|IV|I_V|NV what
4664 Cast an NV to IV while avoiding undefined C behavior
4666 =for apidoc Am|UV|U_V|NV what
4667 Cast an NV to UV while avoiding undefined C behavior
4672 #define I_32(what) (cast_i32((NV)(what)))
4673 #define U_32(what) (cast_ulong((NV)(what)))
4674 #define I_V(what) (cast_iv((NV)(what)))
4675 #define U_V(what) (cast_uv((NV)(what)))
4677 #define I_32(n) ((n) < I32_MAX_P1 ? ((n) < I32_MIN ? I32_MIN : (I32) (n)) \
4678 : ((n) < U32_MAX_P1 ? (I32)(U32) (n) \
4679 : ((n) > 0 ? (I32) U32_MAX : 0 /* NaN */)))
4680 #define U_32(n) ((n) < 0.0 ? ((n) < I32_MIN ? (UV) I32_MIN : (U32)(I32) (n)) \
4681 : ((n) < U32_MAX_P1 ? (U32) (n) \
4682 : ((n) > 0 ? U32_MAX : 0 /* NaN */)))
4683 #define I_V(n) (LIKELY((n) < IV_MAX_P1) ? (UNLIKELY((n) < IV_MIN) ? IV_MIN : (IV) (n)) \
4684 : (LIKELY((n) < UV_MAX_P1) ? (IV)(UV) (n) \
4685 : ((n) > 0 ? (IV)UV_MAX : 0 /* NaN */)))
4686 #define U_V(n) ((n) < 0.0 ? (UNLIKELY((n) < IV_MIN) ? (UV) IV_MIN : (UV)(IV) (n)) \
4687 : (LIKELY((n) < UV_MAX_P1) ? (UV) (n) \
4688 : ((n) > 0 ? UV_MAX : 0 /* NaN */)))
4691 #define U_S(what) ((U16)U_32(what))
4692 #define U_I(what) ((unsigned int)U_32(what))
4693 #define U_L(what) U_32(what)
4696 =for apidoc_section $integer
4697 =for apidoc Amn|IV|IV_MAX
4698 The largest signed integer that fits in an IV on this platform.
4700 =for apidoc Amn|IV|IV_MIN
4701 The negative signed integer furthest away from 0 that fits in an IV on this
4704 =for apidoc Amn|UV|UV_MAX
4705 The largest unsigned integer that fits in a UV on this platform.
4707 =for apidoc Amn|UV|UV_MIN
4708 The smallest unsigned integer that fits in a UV on this platform. It should
4715 # ifndef Perl_signbit
4716 # define Perl_signbit signbit
4720 /* These do not care about the fractional part, only about the range. */
4721 #define NV_WITHIN_IV(nv) (I_V(nv) >= IV_MIN && I_V(nv) <= IV_MAX)
4722 #define NV_WITHIN_UV(nv) ((nv)>=0.0 && U_V(nv) >= UV_MIN && U_V(nv) <= UV_MAX)
4724 /* Used with UV/IV arguments: */
4725 /* XXXX: need to speed it up */
4726 #define CLUMP_2UV(iv) ((iv) < 0 ? 0 : (UV)(iv))
4727 #define CLUMP_2IV(uv) ((uv) > (UV)IV_MAX ? IV_MAX : (IV)(uv))
4735 Uid_t getuid (void);
4736 Uid_t geteuid (void);
4737 Gid_t getgid (void);
4738 Gid_t getegid (void);
4742 #ifndef Perl_debug_log
4743 # define Perl_debug_log PerlIO_stderr()
4746 #ifndef Perl_error_log
4747 # define Perl_error_log (PL_stderrgv \
4748 && isGV(PL_stderrgv) \
4749 && GvIOp(PL_stderrgv) \
4750 && IoOFP(GvIOp(PL_stderrgv)) \
4751 ? IoOFP(GvIOp(PL_stderrgv)) \
4756 #define DEBUG_p_FLAG 0x00000001 /* 1 */
4757 #define DEBUG_s_FLAG 0x00000002 /* 2 */
4758 #define DEBUG_l_FLAG 0x00000004 /* 4 */
4759 #define DEBUG_t_FLAG 0x00000008 /* 8 */
4760 #define DEBUG_o_FLAG 0x00000010 /* 16 */
4761 #define DEBUG_c_FLAG 0x00000020 /* 32 */
4762 #define DEBUG_P_FLAG 0x00000040 /* 64 */
4763 #define DEBUG_m_FLAG 0x00000080 /* 128 */
4764 #define DEBUG_f_FLAG 0x00000100 /* 256 */
4765 #define DEBUG_r_FLAG 0x00000200 /* 512 */
4766 #define DEBUG_x_FLAG 0x00000400 /* 1024 */
4767 #define DEBUG_u_FLAG 0x00000800 /* 2048 */
4768 /* U is reserved for Unofficial, exploratory hacking */
4769 #define DEBUG_U_FLAG 0x00001000 /* 4096 */
4770 #define DEBUG_h_FLAG 0x00002000 /* 8192 */
4771 #define DEBUG_X_FLAG 0x00004000 /* 16384 */
4772 #define DEBUG_D_FLAG 0x00008000 /* 32768 */
4773 #define DEBUG_S_FLAG 0x00010000 /* 65536 */
4774 #define DEBUG_T_FLAG 0x00020000 /* 131072 */
4775 #define DEBUG_R_FLAG 0x00040000 /* 262144 */
4776 #define DEBUG_J_FLAG 0x00080000 /* 524288 */
4777 #define DEBUG_v_FLAG 0x00100000 /*1048576 */
4778 #define DEBUG_C_FLAG 0x00200000 /*2097152 */
4779 #define DEBUG_A_FLAG 0x00400000 /*4194304 */
4780 #define DEBUG_q_FLAG 0x00800000 /*8388608 */
4781 #define DEBUG_M_FLAG 0x01000000 /*16777216*/
4782 #define DEBUG_B_FLAG 0x02000000 /*33554432*/
4783 #define DEBUG_L_FLAG 0x04000000 /*67108864*/
4784 #define DEBUG_i_FLAG 0x08000000 /*134217728*/
4785 #define DEBUG_y_FLAG 0x10000000 /*268435456*/
4786 #define DEBUG_MASK 0x1FFFEFFF /* mask of all the standard flags */
4788 #define DEBUG_DB_RECURSE_FLAG 0x40000000
4789 #define DEBUG_TOP_FLAG 0x80000000 /* -D was given --> PL_debug |= FLAG */
4791 /* Both flags have to be set */
4792 # define DEBUG_BOTH_FLAGS_TEST_(flag1, flag2) \
4793 UNLIKELY((PL_debug & ((flag1)|(flag2))) \
4794 == ((flag1)|(flag2)))
4796 # define DEBUG_p_TEST_ UNLIKELY(PL_debug & DEBUG_p_FLAG)
4797 # define DEBUG_s_TEST_ UNLIKELY(PL_debug & DEBUG_s_FLAG)
4798 # define DEBUG_l_TEST_ UNLIKELY(PL_debug & DEBUG_l_FLAG)
4799 # define DEBUG_t_TEST_ UNLIKELY(PL_debug & DEBUG_t_FLAG)
4800 # define DEBUG_o_TEST_ UNLIKELY(PL_debug & DEBUG_o_FLAG)
4801 # define DEBUG_c_TEST_ UNLIKELY(PL_debug & DEBUG_c_FLAG)
4802 # define DEBUG_P_TEST_ UNLIKELY(PL_debug & DEBUG_P_FLAG)
4803 # define DEBUG_m_TEST_ UNLIKELY(PL_debug & DEBUG_m_FLAG)
4804 # define DEBUG_f_TEST_ UNLIKELY(PL_debug & DEBUG_f_FLAG)
4805 # define DEBUG_r_TEST_ UNLIKELY(PL_debug & DEBUG_r_FLAG)
4806 # define DEBUG_x_TEST_ UNLIKELY(PL_debug & DEBUG_x_FLAG)
4807 # define DEBUG_u_TEST_ UNLIKELY(PL_debug & DEBUG_u_FLAG)
4808 # define DEBUG_U_TEST_ UNLIKELY(PL_debug & DEBUG_U_FLAG)
4809 # define DEBUG_h_TEST_ UNLIKELY(PL_debug & DEBUG_h_FLAG)
4810 # define DEBUG_X_TEST_ UNLIKELY(PL_debug & DEBUG_X_FLAG)
4811 # define DEBUG_D_TEST_ UNLIKELY(PL_debug & DEBUG_D_FLAG)
4812 # define DEBUG_S_TEST_ UNLIKELY(PL_debug & DEBUG_S_FLAG)
4813 # define DEBUG_T_TEST_ UNLIKELY(PL_debug & DEBUG_T_FLAG)
4814 # define DEBUG_R_TEST_ UNLIKELY(PL_debug & DEBUG_R_FLAG)
4815 # define DEBUG_J_TEST_ UNLIKELY(PL_debug & DEBUG_J_FLAG)
4816 # define DEBUG_v_TEST_ UNLIKELY(PL_debug & DEBUG_v_FLAG)
4817 # define DEBUG_C_TEST_ UNLIKELY(PL_debug & DEBUG_C_FLAG)
4818 # define DEBUG_A_TEST_ UNLIKELY(PL_debug & DEBUG_A_FLAG)
4819 # define DEBUG_q_TEST_ UNLIKELY(PL_debug & DEBUG_q_FLAG)
4820 # define DEBUG_M_TEST_ UNLIKELY(PL_debug & DEBUG_M_FLAG)
4821 # define DEBUG_B_TEST_ UNLIKELY(PL_debug & DEBUG_B_FLAG)
4823 /* Locale initialization comes earlier than PL_debug gets set,
4824 * DEBUG_LOCALE_INITIALIZATION_, if defined, will be set early enough */
4825 # ifndef DEBUG_LOCALE_INITIALIZATION_
4826 # define DEBUG_LOCALE_INITIALIZATION_ 0
4828 # define DEBUG_L_TEST_ \
4829 ( UNLIKELY(DEBUG_LOCALE_INITIALIZATION_) \
4830 || UNLIKELY(PL_debug & DEBUG_L_FLAG))
4831 # define DEBUG_Lv_TEST_ \
4832 ( UNLIKELY(DEBUG_LOCALE_INITIALIZATION_) \
4833 || UNLIKELY(DEBUG_BOTH_FLAGS_TEST_(DEBUG_L_FLAG, DEBUG_v_FLAG)))
4834 # define DEBUG_i_TEST_ UNLIKELY(PL_debug & DEBUG_i_FLAG)
4835 # define DEBUG_y_TEST_ UNLIKELY(PL_debug & DEBUG_y_FLAG)
4836 # define DEBUG_Xv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_X_FLAG, DEBUG_v_FLAG)
4837 # define DEBUG_Uv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_U_FLAG, DEBUG_v_FLAG)
4838 # define DEBUG_Pv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_P_FLAG, DEBUG_v_FLAG)
4839 # define DEBUG_yv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_y_FLAG, DEBUG_v_FLAG)
4843 # define DEBUG_p_TEST DEBUG_p_TEST_
4844 # define DEBUG_s_TEST DEBUG_s_TEST_
4845 # define DEBUG_l_TEST DEBUG_l_TEST_
4846 # define DEBUG_t_TEST DEBUG_t_TEST_
4847 # define DEBUG_o_TEST DEBUG_o_TEST_
4848 # define DEBUG_c_TEST DEBUG_c_TEST_
4849 # define DEBUG_P_TEST DEBUG_P_TEST_
4850 # define DEBUG_m_TEST DEBUG_m_TEST_
4851 # define DEBUG_f_TEST DEBUG_f_TEST_
4852 # define DEBUG_r_TEST DEBUG_r_TEST_
4853 # define DEBUG_x_TEST DEBUG_x_TEST_
4854 # define DEBUG_u_TEST DEBUG_u_TEST_
4855 # define DEBUG_U_TEST DEBUG_U_TEST_
4856 # define DEBUG_h_TEST DEBUG_h_TEST_
4857 # define DEBUG_X_TEST DEBUG_X_TEST_
4858 # define DEBUG_D_TEST DEBUG_D_TEST_
4859 # define DEBUG_S_TEST DEBUG_S_TEST_
4860 # define DEBUG_T_TEST DEBUG_T_TEST_
4861 # define DEBUG_R_TEST DEBUG_R_TEST_
4862 # define DEBUG_J_TEST DEBUG_J_TEST_
4863 # define DEBUG_v_TEST DEBUG_v_TEST_
4864 # define DEBUG_C_TEST DEBUG_C_TEST_
4865 # define DEBUG_A_TEST DEBUG_A_TEST_
4866 # define DEBUG_q_TEST DEBUG_q_TEST_
4867 # define DEBUG_M_TEST DEBUG_M_TEST_
4868 # define DEBUG_B_TEST DEBUG_B_TEST_
4869 # define DEBUG_L_TEST DEBUG_L_TEST_
4870 # define DEBUG_i_TEST DEBUG_i_TEST_
4871 # define DEBUG_y_TEST DEBUG_y_TEST_
4872 # define DEBUG_Xv_TEST DEBUG_Xv_TEST_
4873 # define DEBUG_Uv_TEST DEBUG_Uv_TEST_
4874 # define DEBUG_Pv_TEST DEBUG_Pv_TEST_
4875 # define DEBUG_Lv_TEST DEBUG_Lv_TEST_
4876 # define DEBUG_yv_TEST DEBUG_yv_TEST_
4878 # define PERL_DEB(a) a
4879 # define PERL_DEB2(a,b) a
4880 # define PERL_DEBUG(a) if (PL_debug) a
4881 # define DEBUG_p(a) if (DEBUG_p_TEST) a
4882 # define DEBUG_s(a) if (DEBUG_s_TEST) a
4883 # define DEBUG_l(a) if (DEBUG_l_TEST) a
4884 # define DEBUG_t(a) if (DEBUG_t_TEST) a
4885 # define DEBUG_o(a) if (DEBUG_o_TEST) a
4886 # define DEBUG_c(a) if (DEBUG_c_TEST) a
4887 # define DEBUG_P(a) if (DEBUG_P_TEST) a
4889 /* Temporarily turn off memory debugging in case the a
4890 * does memory allocation, either directly or indirectly. */
4891 # define DEBUG_m(a) \
4893 if (PERL_GET_INTERP) { \
4895 if (DEBUG_m_TEST) { \
4896 PL_debug &= ~DEBUG_m_FLAG; \
4898 PL_debug |= DEBUG_m_FLAG; \
4903 /* These allow you to customize your debugging output for specialized,
4904 * generally temporary ad-hoc purposes. For example, if you need 'errno'
4905 * preserved, you can add definitions to these macros (either in this file for
4906 * the whole program, or before the #include "perl.h" in a particular .c file
4907 * you're trying to debug) and recompile:
4909 * #define DEBUG_PRE_STMTS dSAVE_ERRNO;
4910 * #define DEBUG_POST_STMTS RESTORE_ERRNO;
4912 * Other potential things include displaying timestamps, location information,
4913 * which thread, etc. Heres an example with both errno and location info:
4915 * #define DEBUG_PRE_STMTS dSAVE_ERRNO; \
4916 * PerlIO_printf(Perl_debug_log, "%s:%d: ", __FILE__, __LINE__);
4917 * #define DEBUG_POST RESTORE_ERRNO;
4919 * All DEBUG statements in the compiled scope will be have these extra
4920 * statements compiled in; they will be executed only for the DEBUG statements
4921 * whose flags are turned on.
4923 #ifndef DEBUG_PRE_STMTS
4924 # define DEBUG_PRE_STMTS
4926 #ifndef DEBUG_POST_STMTS
4927 # define DEBUG_POST_STMTS
4930 # define DEBUG__(t, a) \
4932 if (t) STMT_START { \
4933 DEBUG_PRE_STMTS a; DEBUG_POST_STMTS \
4937 # define DEBUG_f(a) DEBUG__(DEBUG_f_TEST, a)
4939 /* For re_comp.c, re_exec.c, assume -Dr has been specified */
4940 # ifdef PERL_EXT_RE_BUILD
4941 # define DEBUG_r(a) STMT_START { \
4942 DEBUG_PRE_STMTS a; DEBUG_POST_STMTS \
4945 # define DEBUG_r(a) DEBUG__(DEBUG_r_TEST, a)
4946 # endif /* PERL_EXT_RE_BUILD */
4948 # define DEBUG_x(a) DEBUG__(DEBUG_x_TEST, a)
4949 # define DEBUG_u(a) DEBUG__(DEBUG_u_TEST, a)
4950 # define DEBUG_U(a) DEBUG__(DEBUG_U_TEST, a)
4951 # define DEBUG_X(a) DEBUG__(DEBUG_X_TEST, a)
4952 # define DEBUG_D(a) DEBUG__(DEBUG_D_TEST, a)
4953 # define DEBUG_Xv(a) DEBUG__(DEBUG_Xv_TEST, a)
4954 # define DEBUG_Uv(a) DEBUG__(DEBUG_Uv_TEST, a)
4955 # define DEBUG_Pv(a) DEBUG__(DEBUG_Pv_TEST, a)
4956 # define DEBUG_Lv(a) DEBUG__(DEBUG_Lv_TEST, a)
4957 # define DEBUG_yv(a) DEBUG__(DEBUG_yv_TEST, a)
4959 # define DEBUG_S(a) DEBUG__(DEBUG_S_TEST, a)
4960 # define DEBUG_T(a) DEBUG__(DEBUG_T_TEST, a)
4961 # define DEBUG_R(a) DEBUG__(DEBUG_R_TEST, a)
4962 # define DEBUG_v(a) DEBUG__(DEBUG_v_TEST, a)
4963 # define DEBUG_C(a) DEBUG__(DEBUG_C_TEST, a)
4964 # define DEBUG_A(a) DEBUG__(DEBUG_A_TEST, a)
4965 # define DEBUG_q(a) DEBUG__(DEBUG_q_TEST, a)
4966 # define DEBUG_M(a) DEBUG__(DEBUG_M_TEST, a)
4967 # define DEBUG_B(a) DEBUG__(DEBUG_B_TEST, a)
4968 # define DEBUG_L(a) DEBUG__(DEBUG_L_TEST, a)
4969 # define DEBUG_i(a) DEBUG__(DEBUG_i_TEST, a)
4970 # define DEBUG_y(a) DEBUG__(DEBUG_y_TEST, a)
4972 #else /* ! DEBUGGING below */
4974 # define DEBUG_p_TEST (0)
4975 # define DEBUG_s_TEST (0)
4976 # define DEBUG_l_TEST (0)
4977 # define DEBUG_t_TEST (0)
4978 # define DEBUG_o_TEST (0)
4979 # define DEBUG_c_TEST (0)
4980 # define DEBUG_P_TEST (0)
4981 # define DEBUG_m_TEST (0)
4982 # define DEBUG_f_TEST (0)
4983 # define DEBUG_r_TEST (0)
4984 # define DEBUG_x_TEST (0)
4985 # define DEBUG_u_TEST (0)
4986 # define DEBUG_U_TEST (0)
4987 # define DEBUG_h_TEST (0)
4988 # define DEBUG_X_TEST (0)
4989 # define DEBUG_D_TEST (0)
4990 # define DEBUG_S_TEST (0)
4991 # define DEBUG_T_TEST (0)
4992 # define DEBUG_R_TEST (0)
4993 # define DEBUG_J_TEST (0)
4994 # define DEBUG_v_TEST (0)
4995 # define DEBUG_C_TEST (0)
4996 # define DEBUG_A_TEST (0)
4997 # define DEBUG_q_TEST (0)
4998 # define DEBUG_M_TEST (0)
4999 # define DEBUG_B_TEST (0)
5000 # define DEBUG_L_TEST (0)
5001 # define DEBUG_i_TEST (0)
5002 # define DEBUG_y_TEST (0)
5003 # define DEBUG_Xv_TEST (0)
5004 # define DEBUG_Uv_TEST (0)
5005 # define DEBUG_Pv_TEST (0)
5006 # define DEBUG_Lv_TEST (0)
5007 # define DEBUG_yv_TEST (0)
5009 # define PERL_DEB(a)
5010 # define PERL_DEB2(a,b) b
5011 # define PERL_DEBUG(a)
5039 # define DEBUG_Xv(a)
5040 # define DEBUG_Uv(a)
5041 # define DEBUG_Pv(a)
5042 # define DEBUG_Lv(a)
5043 # define DEBUG_yv(a)
5044 #endif /* DEBUGGING */
5047 #define DEBUG_SCOPE(where) \
5049 Perl_deb(aTHX_ "%s scope %ld (savestack=%ld) at %s:%d\n", \
5050 where, (long)PL_scopestack_ix, (long)PL_savestack_ix, \
5051 __FILE__, __LINE__));
5053 /* Keep the old croak based assert for those who want it, and as a fallback if
5054 the platform is so heretically non-ANSI that it can't assert. */
5056 #define Perl_assert(what) PERL_DEB2( \
5057 ((what) ? ((void) 0) : \
5058 (Perl_croak_nocontext("Assertion %s failed: file \"" __FILE__ \
5059 "\", line %d", STRINGIFY(what), __LINE__), \
5060 (void) 0)), ((void)0))
5062 /* assert() gets defined if DEBUGGING.
5063 * If no DEBUGGING, the <assert.h> has not been included. */
5065 # define assert(what) Perl_assert(what)
5068 # define assert_(what) assert(what),
5070 # define assert_(what)
5074 I32 (*uf_val)(pTHX_ IV, SV*);
5075 I32 (*uf_set)(pTHX_ IV, SV*);
5079 /* In pre-5.7-Perls the PERL_MAGIC_uvar magic didn't get the thread context.
5080 * XS code wanting to be backward compatible can do something
5081 * like the following:
5083 #ifndef PERL_MG_UFUNC
5084 #define PERL_MG_UFUNC(name,ix,sv) I32 name(IV ix, SV *sv)
5087 static PERL_MG_UFUNC(foo_get, index, val)
5097 #ifndef PERL_MG_UFUNC
5098 #define PERL_MG_UFUNC(name,ix,sv) I32 name(pTHX_ IV ix, SV *sv)
5103 /* isfinite and others are here rather than in math.h as C99 stipulates */
5108 # if !defined(WIN32) && !defined(VMS)
5110 char *crypt (const char*, const char*);
5112 # endif /* !WIN32 */
5115 char *getlogin (void);
5117 # endif /* !WIN32 */
5118 #endif /* !__cplusplus */
5120 /* Fixme on VMS. This needs to be a run-time, not build time options */
5121 /* Also rename() is affected by this */
5122 #ifdef UNLINK_ALL_VERSIONS /* Currently only makes sense for VMS */
5123 #define UNLINK unlnk
5124 I32 unlnk (pTHX_ const char*);
5126 #define UNLINK PerlLIO_unlink
5129 /* some versions of glibc are missing the setresuid() proto */
5130 #if defined(HAS_SETRESUID) && !defined(HAS_SETRESUID_PROTO)
5131 int setresuid(uid_t ruid, uid_t euid, uid_t suid);
5133 /* some versions of glibc are missing the setresgid() proto */
5134 #if defined(HAS_SETRESGID) && !defined(HAS_SETRESGID_PROTO)
5135 int setresgid(gid_t rgid, gid_t egid, gid_t sgid);
5138 #ifndef HAS_SETREUID
5139 # ifdef HAS_SETRESUID
5140 # define setreuid(r,e) setresuid(r,e,(Uid_t)-1)
5141 # define HAS_SETREUID
5144 #ifndef HAS_SETREGID
5145 # ifdef HAS_SETRESGID
5146 # define setregid(r,e) setresgid(r,e,(Gid_t)-1)
5147 # define HAS_SETREGID
5151 /* Sighandler_t defined in iperlsys.h */
5153 #ifdef HAS_SIGACTION
5154 typedef struct sigaction Sigsave_t;
5156 typedef Sighandler_t Sigsave_t;
5167 # define RUNOPS_DEFAULT Perl_runops_debug
5169 # define RUNOPS_DEFAULT Perl_runops_standard
5172 #if defined(USE_PERLIO)
5173 EXTERN_C void PerlIO_teardown(void);
5174 # ifdef USE_ITHREADS
5175 # define PERLIO_INIT MUTEX_INIT(&PL_perlio_mutex)
5176 # define PERLIO_TERM \
5178 PerlIO_teardown(); \
5179 MUTEX_DESTROY(&PL_perlio_mutex);\
5182 # define PERLIO_INIT
5183 # define PERLIO_TERM PerlIO_teardown()
5186 # define PERLIO_INIT
5187 # define PERLIO_TERM
5191 # ifdef MUTEX_INIT_CALLS_MALLOC
5192 # define MALLOC_INIT \
5194 PL_malloc_mutex = NULL; \
5195 MUTEX_INIT(&PL_malloc_mutex); \
5197 # define MALLOC_TERM \
5199 perl_mutex tmp = PL_malloc_mutex; \
5200 PL_malloc_mutex = NULL; \
5201 MUTEX_DESTROY(&tmp); \
5204 # define MALLOC_INIT MUTEX_INIT(&PL_malloc_mutex)
5205 # define MALLOC_TERM MUTEX_DESTROY(&PL_malloc_mutex)
5208 # define MALLOC_INIT
5209 # define MALLOC_TERM
5212 #if defined(MULTIPLICITY)
5214 struct perl_memory_debug_header;
5215 struct perl_memory_debug_header {
5217 # if defined(PERL_POISON) || defined(PERL_DEBUG_READONLY_COW)
5220 struct perl_memory_debug_header *prev;
5221 struct perl_memory_debug_header *next;
5222 # ifdef PERL_DEBUG_READONLY_COW
5227 #elif defined(PERL_DEBUG_READONLY_COW)
5229 struct perl_memory_debug_header;
5230 struct perl_memory_debug_header {
5236 #if defined (PERL_TRACK_MEMPOOL) || defined (PERL_DEBUG_READONLY_COW)
5238 # define PERL_MEMORY_DEBUG_HEADER_SIZE \
5239 (sizeof(struct perl_memory_debug_header) + \
5240 (MEM_ALIGNBYTES - sizeof(struct perl_memory_debug_header) \
5241 %MEM_ALIGNBYTES) % MEM_ALIGNBYTES)
5244 # define PERL_MEMORY_DEBUG_HEADER_SIZE 0
5247 #ifdef PERL_TRACK_MEMPOOL
5248 # ifdef PERL_DEBUG_READONLY_COW
5249 # define INIT_TRACK_MEMPOOL(header, interp) \
5251 (header).interpreter = (interp); \
5252 (header).prev = (header).next = &(header); \
5253 (header).readonly = 0; \
5256 # define INIT_TRACK_MEMPOOL(header, interp) \
5258 (header).interpreter = (interp); \
5259 (header).prev = (header).next = &(header); \
5263 # define INIT_TRACK_MEMPOOL(header, interp)
5266 #ifdef I_MALLOCMALLOC
5267 /* Needed for malloc_size(), malloc_good_size() on some systems */
5268 # include <malloc/malloc.h>
5272 # define Perl_safesysmalloc_size(where) Perl_malloced_size(where)
5274 # if defined(HAS_MALLOC_SIZE) && !defined(PERL_DEBUG_READONLY_COW)
5275 # ifdef PERL_TRACK_MEMPOOL
5276 # define Perl_safesysmalloc_size(where) \
5277 (malloc_size(((char *)(where)) - PERL_MEMORY_DEBUG_HEADER_SIZE) - PERL_MEMORY_DEBUG_HEADER_SIZE)
5279 # define Perl_safesysmalloc_size(where) malloc_size(where)
5282 # ifdef HAS_MALLOC_GOOD_SIZE
5283 # ifdef PERL_TRACK_MEMPOOL
5284 # define Perl_malloc_good_size(how_much) \
5285 (malloc_good_size((how_much) + PERL_MEMORY_DEBUG_HEADER_SIZE) - PERL_MEMORY_DEBUG_HEADER_SIZE)
5287 # define Perl_malloc_good_size(how_much) malloc_good_size(how_much)
5290 /* Having this as the identity operation makes some code simpler. */
5291 # define Perl_malloc_good_size(how_much) (how_much)
5295 typedef int (*runops_proc_t)(pTHX);
5296 typedef void (*share_proc_t) (pTHX_ SV *sv);
5297 typedef int (*thrhook_proc_t) (pTHX);
5298 typedef OP* (*PPADDR_t[]) (pTHX);
5299 typedef bool (*destroyable_proc_t) (pTHX_ SV *sv);
5300 typedef void (*despatch_signals_proc_t) (pTHX);
5302 #if defined(__DYNAMIC__) && defined(PERL_DARWIN) && defined(PERL_CORE)
5303 # include <crt_externs.h> /* for the env array */
5304 # define environ (*_NSGetEnviron())
5305 #elif defined(USE_ENVIRON_ARRAY) && !defined(environ)
5306 /* VMS and some other platforms don't use the environ array */
5307 EXTERN_C char **environ; /* environment variables supplied via exec */
5310 #define PERL_PATCHLEVEL_H_IMPLICIT
5311 #include "patchlevel.h"
5312 #undef PERL_PATCHLEVEL_H_IMPLICIT
5314 #define PERL_VERSION_STRING STRINGIFY(PERL_REVISION) "." \
5315 STRINGIFY(PERL_VERSION) "." \
5316 STRINGIFY(PERL_SUBVERSION)
5318 #define PERL_API_VERSION_STRING STRINGIFY(PERL_API_REVISION) "." \
5319 STRINGIFY(PERL_API_VERSION) "." \
5320 STRINGIFY(PERL_API_SUBVERSION)
5324 /* handy constants */
5325 EXTCONST char PL_warn_uninit[]
5326 INIT("Use of uninitialized value%s%s%s");
5327 EXTCONST char PL_warn_uninit_sv[]
5328 INIT("Use of uninitialized value%" SVf "%s%s");
5329 EXTCONST char PL_warn_nosemi[]
5330 INIT("Semicolon seems to be missing");
5331 EXTCONST char PL_warn_reserved[]
5332 INIT("Unquoted string \"%s\" may clash with future reserved word");
5333 EXTCONST char PL_warn_nl[]
5334 INIT("Unsuccessful %s on filename containing newline");
5335 EXTCONST char PL_no_wrongref[]
5336 INIT("Can't use %s ref as %s ref");
5337 /* The core no longer needs this here. If you require the string constant,
5338 please inline a copy into your own code. */
5339 EXTCONST char PL_no_symref[] __attribute__deprecated__
5340 INIT("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use");
5341 EXTCONST char PL_no_symref_sv[]
5342 INIT("Can't use string (\"%" SVf32 "\"%s) as %s ref while \"strict refs\" in use");
5344 EXTCONST char PL_no_usym[]
5345 INIT("Can't use an undefined value as %s reference");
5346 EXTCONST char PL_no_aelem[]
5347 INIT("Modification of non-creatable array value attempted, subscript %d");
5348 EXTCONST char PL_no_helem_sv[]
5349 INIT("Modification of non-creatable hash value attempted, subscript \"%" SVf "\"");
5350 EXTCONST char PL_no_modify[]
5351 INIT("Modification of a read-only value attempted");
5352 EXTCONST char PL_no_mem[sizeof("Out of memory!\n")]
5353 INIT("Out of memory!\n");
5354 EXTCONST char PL_no_security[]
5355 INIT("Insecure dependency in %s%s");
5356 EXTCONST char PL_no_sock_func[]
5357 INIT("Unsupported socket function \"%s\" called");
5358 EXTCONST char PL_no_dir_func[]
5359 INIT("Unsupported directory function \"%s\" called");
5360 EXTCONST char PL_no_func[]
5361 INIT("The %s function is unimplemented");
5362 EXTCONST char PL_no_myglob[]
5363 INIT("\"%s\" %s %s can't be in a package");
5364 EXTCONST char PL_no_localize_ref[]
5365 INIT("Can't localize through a reference");
5366 EXTCONST char PL_memory_wrap[]
5367 INIT("panic: memory wrap");
5368 EXTCONST char PL_extended_cp_format[]
5369 INIT("Code point 0x%" UVXf " is not Unicode, requires a Perl extension,"
5370 " and so is not portable");
5371 EXTCONST char PL_Yes[]
5373 EXTCONST char PL_No[]
5375 EXTCONST char PL_Zero[]
5379 =for apidoc_section $numeric
5380 =for apidoc AmTuU|const char *|PL_hexdigit|U8 value
5382 This array, indexed by an integer, converts that value into the character that
5383 represents it. For example, if the input is 8, the return will be a string
5384 whose first character is '8'. What is actually returned is a pointer into a
5385 string. All you are interested in is the first character of that string. To
5386 get uppercase letters (for the values 10..15), add 16 to the index. Hence,
5387 C<PL_hexdigit[11]> is C<'b'>, and C<PL_hexdigit[11+16]> is C<'B'>. Adding 16
5388 to an index whose representation is '0'..'9' yields the same as not adding 16.
5389 Indices outside the range 0..31 result in (bad) undedefined behavior.
5393 EXTCONST char PL_hexdigit[]
5394 INIT("0123456789abcdef0123456789ABCDEF");
5396 EXTCONST STRLEN PL_WARN_ALL
5398 EXTCONST STRLEN PL_WARN_NONE
5401 /* This is constant on most architectures, a global on OS/2 */
5403 EXTCONST char PL_sh_path[]
5404 INIT(SH_PATH); /* full path of shell */
5408 EXTCONST char PL_cshname[]
5410 # define PL_cshlen (sizeof(CSH "") - 1)
5413 /* These are baked at compile time into any shared perl library.
5414 In future releases this will allow us in main() to sanity test the
5415 library we're linking against. */
5417 EXTCONST U8 PL_revision
5418 INIT(PERL_REVISION);
5419 EXTCONST U8 PL_version
5421 EXTCONST U8 PL_subversion
5422 INIT(PERL_SUBVERSION);
5424 EXTCONST char PL_uuemap[65]
5425 INIT("`!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_");
5427 /* a special string address whose value is "isa", but which perl knows
5428 * to treat as if it were really "DOES" when printing the method name in
5429 * the "Can't call method '%s'" error message */
5430 EXTCONST char PL_isa_DOES[]
5434 EXTCONST char PL_uudmap[256] =
5436 # include "uuudmap.h"
5438 # include "uudmap.h"
5441 EXTCONST char PL_bitcount[256] =
5443 # include "ubitcount.h"
5445 # include "bitcount.h"
5448 EXTCONST char* const PL_sig_name[] = { SIG_NAME };
5449 EXTCONST int PL_sig_num[] = { SIG_NUM };
5451 EXTCONST char PL_uudmap[256];
5452 EXTCONST char PL_bitcount[256];
5453 EXTCONST char* const PL_sig_name[];
5454 EXTCONST int PL_sig_num[];
5457 /* fast conversion and case folding tables. The folding tables complement the
5458 * fold, so that 'a' maps to 'A' and 'A' maps to 'a', ignoring more complicated
5459 * folds such as outside the range or to multiple characters. */
5464 /* The EBCDIC fold table depends on the code page, and hence is found in
5465 * ebcdic_tables.h */
5467 EXTCONST unsigned char PL_fold[] = {
5468 0, 1, 2, 3, 4, 5, 6, 7,
5469 8, 9, 10, 11, 12, 13, 14, 15,
5470 16, 17, 18, 19, 20, 21, 22, 23,
5471 24, 25, 26, 27, 28, 29, 30, 31,
5472 32, 33, 34, 35, 36, 37, 38, 39,
5473 40, 41, 42, 43, 44, 45, 46, 47,
5474 48, 49, 50, 51, 52, 53, 54, 55,
5475 56, 57, 58, 59, 60, 61, 62, 63,
5476 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
5477 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
5478 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
5479 'x', 'y', 'z', 91, 92, 93, 94, 95,
5480 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
5481 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
5482 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
5483 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
5484 128, 129, 130, 131, 132, 133, 134, 135,
5485 136, 137, 138, 139, 140, 141, 142, 143,
5486 144, 145, 146, 147, 148, 149, 150, 151,
5487 152, 153, 154, 155, 156, 157, 158, 159,
5488 160, 161, 162, 163, 164, 165, 166, 167,
5489 168, 169, 170, 171, 172, 173, 174, 175,
5490 176, 177, 178, 179, 180, 181, 182, 183,
5491 184, 185, 186, 187, 188, 189, 190, 191,
5492 192, 193, 194, 195, 196, 197, 198, 199,
5493 200, 201, 202, 203, 204, 205, 206, 207,
5494 208, 209, 210, 211, 212, 213, 214, 215,
5495 216, 217, 218, 219, 220, 221, 222, 223,
5496 224, 225, 226, 227, 228, 229, 230, 231,
5497 232, 233, 234, 235, 236, 237, 238, 239,
5498 240, 241, 242, 243, 244, 245, 246, 247,
5499 248, 249, 250, 251, 252, 253, 254, 255
5502 EXTCONST unsigned char PL_fold_latin1[] = {
5503 /* Full latin1 complement folding, except for three problematic code points:
5504 * Micro sign (181 = 0xB5) and y with diearesis (255 = 0xFF) have their
5505 * fold complements outside the Latin1 range, so can't match something
5506 * that isn't in utf8.
5507 * German lower case sharp s (223 = 0xDF) folds to two characters, 'ss',
5508 * not one, so can't be represented in this table.
5510 * All have to be specially handled */
5511 0, 1, 2, 3, 4, 5, 6, 7,
5512 8, 9, 10, 11, 12, 13, 14, 15,
5513 16, 17, 18, 19, 20, 21, 22, 23,
5514 24, 25, 26, 27, 28, 29, 30, 31,
5515 32, 33, 34, 35, 36, 37, 38, 39,
5516 40, 41, 42, 43, 44, 45, 46, 47,
5517 48, 49, 50, 51, 52, 53, 54, 55,
5518 56, 57, 58, 59, 60, 61, 62, 63,
5519 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
5520 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
5521 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
5522 'x', 'y', 'z', 91, 92, 93, 94, 95,
5523 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
5524 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
5525 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
5526 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
5527 128, 129, 130, 131, 132, 133, 134, 135,
5528 136, 137, 138, 139, 140, 141, 142, 143,
5529 144, 145, 146, 147, 148, 149, 150, 151,
5530 152, 153, 154, 155, 156, 157, 158, 159,
5531 160, 161, 162, 163, 164, 165, 166, 167,
5532 168, 169, 170, 171, 172, 173, 174, 175,
5533 176, 177, 178, 179, 180, 181 /*micro */, 182, 183,
5534 184, 185, 186, 187, 188, 189, 190, 191,
5535 192+32, 193+32, 194+32, 195+32, 196+32, 197+32, 198+32, 199+32,
5536 200+32, 201+32, 202+32, 203+32, 204+32, 205+32, 206+32, 207+32,
5537 208+32, 209+32, 210+32, 211+32, 212+32, 213+32, 214+32, 215,
5538 216+32, 217+32, 218+32, 219+32, 220+32, 221+32, 222+32, 223 /* ss */,
5539 224-32, 225-32, 226-32, 227-32, 228-32, 229-32, 230-32, 231-32,
5540 232-32, 233-32, 234-32, 235-32, 236-32, 237-32, 238-32, 239-32,
5541 240-32, 241-32, 242-32, 243-32, 244-32, 245-32, 246-32, 247,
5542 248-32, 249-32, 250-32, 251-32, 252-32, 253-32, 254-32,
5543 255 /* y with diaeresis */
5546 /* If these tables are accessed through ebcdic, the access will be converted to
5548 EXTCONST unsigned char PL_latin1_lc[] = { /* lowercasing */
5549 0, 1, 2, 3, 4, 5, 6, 7,
5550 8, 9, 10, 11, 12, 13, 14, 15,
5551 16, 17, 18, 19, 20, 21, 22, 23,
5552 24, 25, 26, 27, 28, 29, 30, 31,
5553 32, 33, 34, 35, 36, 37, 38, 39,
5554 40, 41, 42, 43, 44, 45, 46, 47,
5555 48, 49, 50, 51, 52, 53, 54, 55,
5556 56, 57, 58, 59, 60, 61, 62, 63,
5557 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
5558 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
5559 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
5560 'x', 'y', 'z', 91, 92, 93, 94, 95,
5561 96, 97, 98, 99, 100, 101, 102, 103,
5562 104, 105, 106, 107, 108, 109, 110, 111,
5563 112, 113, 114, 115, 116, 117, 118, 119,
5564 120, 121, 122, 123, 124, 125, 126, 127,
5565 128, 129, 130, 131, 132, 133, 134, 135,
5566 136, 137, 138, 139, 140, 141, 142, 143,
5567 144, 145, 146, 147, 148, 149, 150, 151,
5568 152, 153, 154, 155, 156, 157, 158, 159,
5569 160, 161, 162, 163, 164, 165, 166, 167,
5570 168, 169, 170, 171, 172, 173, 174, 175,
5571 176, 177, 178, 179, 180, 181, 182, 183,
5572 184, 185, 186, 187, 188, 189, 190, 191,
5573 192+32, 193+32, 194+32, 195+32, 196+32, 197+32, 198+32, 199+32,
5574 200+32, 201+32, 202+32, 203+32, 204+32, 205+32, 206+32, 207+32,
5575 208+32, 209+32, 210+32, 211+32, 212+32, 213+32, 214+32, 215,
5576 216+32, 217+32, 218+32, 219+32, 220+32, 221+32, 222+32, 223,
5577 224, 225, 226, 227, 228, 229, 230, 231,
5578 232, 233, 234, 235, 236, 237, 238, 239,
5579 240, 241, 242, 243, 244, 245, 246, 247,
5580 248, 249, 250, 251, 252, 253, 254, 255
5583 /* upper and title case of latin1 characters, modified so that the three tricky
5584 * ones are mapped to 255 (which is one of the three) */
5585 EXTCONST unsigned char PL_mod_latin1_uc[] = {
5586 0, 1, 2, 3, 4, 5, 6, 7,
5587 8, 9, 10, 11, 12, 13, 14, 15,
5588 16, 17, 18, 19, 20, 21, 22, 23,
5589 24, 25, 26, 27, 28, 29, 30, 31,
5590 32, 33, 34, 35, 36, 37, 38, 39,
5591 40, 41, 42, 43, 44, 45, 46, 47,
5592 48, 49, 50, 51, 52, 53, 54, 55,
5593 56, 57, 58, 59, 60, 61, 62, 63,
5594 64, 65, 66, 67, 68, 69, 70, 71,
5595 72, 73, 74, 75, 76, 77, 78, 79,
5596 80, 81, 82, 83, 84, 85, 86, 87,
5597 88, 89, 90, 91, 92, 93, 94, 95,
5598 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
5599 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
5600 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
5601 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
5602 128, 129, 130, 131, 132, 133, 134, 135,
5603 136, 137, 138, 139, 140, 141, 142, 143,
5604 144, 145, 146, 147, 148, 149, 150, 151,
5605 152, 153, 154, 155, 156, 157, 158, 159,
5606 160, 161, 162, 163, 164, 165, 166, 167,
5607 168, 169, 170, 171, 172, 173, 174, 175,
5608 176, 177, 178, 179, 180, 255 /*micro*/, 182, 183,
5609 184, 185, 186, 187, 188, 189, 190, 191,
5610 192, 193, 194, 195, 196, 197, 198, 199,
5611 200, 201, 202, 203, 204, 205, 206, 207,
5612 208, 209, 210, 211, 212, 213, 214, 215,
5613 216, 217, 218, 219, 220, 221, 222,
5614 # if UNICODE_MAJOR_VERSION > 2 \
5615 || (UNICODE_MAJOR_VERSION == 2 && UNICODE_DOT_VERSION >= 1 \
5616 && UNICODE_DOT_DOT_VERSION >= 8)
5618 # else /* uc(sharp s) is 'sharp s' itself in early unicode */
5621 224-32, 225-32, 226-32, 227-32, 228-32, 229-32, 230-32, 231-32,
5622 232-32, 233-32, 234-32, 235-32, 236-32, 237-32, 238-32, 239-32,
5623 240-32, 241-32, 242-32, 243-32, 244-32, 245-32, 246-32, 247,
5624 248-32, 249-32, 250-32, 251-32, 252-32, 253-32, 254-32, 255
5626 # endif /* !EBCDIC, but still in DOINIT */
5627 #else /* ! DOINIT */
5629 EXTCONST unsigned char PL_fold[];
5630 EXTCONST unsigned char PL_fold_latin1[];
5631 EXTCONST unsigned char PL_mod_latin1_uc[];
5632 EXTCONST unsigned char PL_latin1_lc[];
5636 /* Although only used for debugging, these constants must be available in
5637 * non-debugging builds too, since they're used in ext/re/re_exec.c,
5638 * which has DEBUGGING enabled always */
5640 EXTCONST char* const PL_block_type[] = {
5657 EXTCONST char* PL_block_type[];
5660 /* These are all the compile time options that affect binary compatibility.
5661 Other compile time options that are binary compatible are in perl.c
5662 (in S_Internals_V()). Both are combined for the output of perl -V
5663 However, this string will be embedded in any shared perl library, which will
5664 allow us add a comparison check in perlmain.c in the near future. */
5666 EXTCONST char PL_bincompat_options[] =
5667 # ifdef DEBUG_LEAKING_SCALARS
5668 " DEBUG_LEAKING_SCALARS"
5670 # ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
5671 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
5676 # ifdef HAVE_INTERP_INTERN
5677 " HAVE_INTERP_INTERN"
5679 # ifdef MULTIPLICITY
5685 # ifdef NO_HASH_SEED
5688 # ifdef PERLIO_LAYERS
5691 # ifdef PERL_DEBUG_READONLY_COW
5692 " PERL_DEBUG_READONLY_COW"
5694 # ifdef PERL_DEBUG_READONLY_OPS
5695 " PERL_DEBUG_READONLY_OPS"
5697 # ifdef PERL_HASH_FUNC_DEFINE
5698 /* note that this is different from the others, PERL_HASH_FUNC_DEFINE
5699 * is a string which says which define was defined. */
5700 " " PERL_HASH_FUNC_DEFINE
5702 # ifdef PERL_HASH_USE_SBOX32
5703 " PERL_HASH_USE_SBOX32"
5705 " PERL_HASH_NO_SBOX32"
5707 # ifdef PERL_IMPLICIT_SYS
5708 " PERL_IMPLICIT_SYS"
5716 # ifdef PERL_SAWAMPERSAND
5717 " PERL_SAWAMPERSAND"
5719 # ifdef PERL_TRACK_MEMPOOL
5720 " PERL_TRACK_MEMPOOL"
5722 # ifdef PERL_USES_PL_PIDSTATUS
5723 " PERL_USES_PL_PIDSTATUS"
5725 # ifdef USE_64_BIT_ALL
5728 # ifdef USE_64_BIT_INT
5734 # ifdef USE_ITHREADS
5737 # ifdef USE_LARGE_FILES
5740 # ifdef USE_LOCALE_COLLATE
5741 " USE_LOCALE_COLLATE"
5743 # ifdef USE_LOCALE_NUMERIC
5744 " USE_LOCALE_NUMERIC"
5746 # ifdef USE_LOCALE_TIME
5749 # ifdef USE_LONG_DOUBLE
5755 # ifdef USE_QUADMATH
5758 # ifdef USE_REENTRANT_API
5759 " USE_REENTRANT_API"
5764 # ifdef VMS_DO_SOCKETS
5767 # ifdef VMS_SHORTEN_LONG_SYMBOLS
5768 " VMS_SHORTEN_LONG_SYMBOLS"
5770 # ifdef VMS_WE_ARE_CASE_SENSITIVE
5771 " VMS_SYMBOL_CASE_AS_IS"
5775 EXTCONST char PL_bincompat_options[];
5778 #ifndef PERL_SET_PHASE
5779 # define PERL_SET_PHASE(new_phase) \
5780 PERL_DTRACE_PROBE_PHASE(new_phase); \
5781 PL_phase = new_phase;
5784 /* The interpreter phases. If these ever change, PL_phase_names right below will
5785 * need to be updated accordingly. */
5787 PERL_PHASE_CONSTRUCT = 0,
5788 PERL_PHASE_START = 1,
5789 PERL_PHASE_CHECK = 2,
5790 PERL_PHASE_INIT = 3,
5793 PERL_PHASE_DESTRUCT = 6
5797 EXTCONST char *const PL_phase_names[] = {
5807 EXTCONST char *const PL_phase_names[];
5811 =for apidoc_section $utility
5813 =for apidoc phase_name
5815 Returns the given phase's name as a NUL-terminated string.
5817 For example, to print a stack trace that includes the current
5818 interpreter phase you might do:
5820 const char* phase_name = phase_name(PL_phase);
5821 mess("This is weird. (Perl phase: %s)", phase_name);
5826 #define phase_name(phase) (PL_phase_names[phase])
5829 /* Do not use this macro. It only exists for extensions that rely on PL_dirty
5830 * instead of using the newer PL_phase, which provides everything PL_dirty
5831 * provided, and more. */
5832 # define PL_dirty cBOOL(PL_phase == PERL_PHASE_DESTRUCT)
5834 # define PL_amagic_generation PL_na
5835 # define PL_encoding ((SV *)NULL)
5836 #endif /* !PERL_CORE */
5838 #define PL_hints PL_compiling.cop_hints
5839 #define PL_maxo MAXO
5843 /*****************************************************************************/
5844 /* This lexer/parser stuff is currently global since yacc is hard to reenter */
5845 /*****************************************************************************/
5846 /* XXX This needs to be revisited, since BEGIN makes yacc re-enter... */
5849 /* LynxOS defines these in scsi.h which is included via ioctl.h */
5858 #define LEX_NOTPARSING 11 /* borrowed from toke.c */
5866 XATTRBLOCK, /* next token should be an attribute or block */
5867 XATTRTERM, /* next token should be an attribute, or block in a term */
5871 XTERMORDORDOR /* evil hack */
5872 /* update exp_name[] in toke.c if adding to this enum */
5875 #define KEY_sigvar 0xFFFF /* fake keyword representing a signature var */
5877 /* Hints are now stored in a dedicated U32, so the bottom 8 bits are no longer
5878 special and there is no need for HINT_PRIVATE_MASK for COPs.
5880 NOTE: The typical module using these has the bit value hard-coded, so don't
5881 blindly change the values of these.
5883 If we run out of bits, the 2 locale ones could be combined. The PARTIAL one
5884 is for "use locale 'FOO'" which excludes some categories. It requires going
5885 to %^H to find out which are in and which are out. This could be extended
5886 for the normal case of a plain HINT_LOCALE, so that %^H would be used for
5888 #define HINT_INTEGER 0x00000001 /* integer pragma */
5889 #define HINT_STRICT_REFS 0x00000002 /* strict pragma */
5890 #define HINT_LOCALE 0x00000004 /* locale pragma */
5891 #define HINT_BYTES 0x00000008 /* bytes pragma */
5892 #define HINT_LOCALE_PARTIAL 0x00000010 /* locale, but a subset of categories */
5894 #define HINT_EXPLICIT_STRICT_REFS 0x00000020 /* strict.pm */
5895 #define HINT_EXPLICIT_STRICT_SUBS 0x00000040 /* strict.pm */
5896 #define HINT_EXPLICIT_STRICT_VARS 0x00000080 /* strict.pm */
5898 #define HINT_BLOCK_SCOPE 0x00000100
5899 #define HINT_STRICT_SUBS 0x00000200 /* strict pragma */
5900 #define HINT_STRICT_VARS 0x00000400 /* strict pragma */
5901 #define HINT_UNI_8_BIT 0x00000800 /* unicode_strings feature */
5903 /* The HINT_NEW_* constants are used by the overload pragma */
5904 #define HINT_NEW_INTEGER 0x00001000
5905 #define HINT_NEW_FLOAT 0x00002000
5906 #define HINT_NEW_BINARY 0x00004000
5907 #define HINT_NEW_STRING 0x00008000
5908 #define HINT_NEW_RE 0x00010000
5909 #define HINT_LOCALIZE_HH 0x00020000 /* %^H needs to be copied */
5910 #define HINT_LEXICAL_IO_IN 0x00040000 /* ${^OPEN} is set for input */
5911 #define HINT_LEXICAL_IO_OUT 0x00080000 /* ${^OPEN} is set for output */
5913 #define HINT_RE_TAINT 0x00100000 /* re pragma */
5914 #define HINT_RE_EVAL 0x00200000 /* re pragma */
5916 #define HINT_FILETEST_ACCESS 0x00400000 /* filetest pragma */
5917 #define HINT_UTF8 0x00800000 /* utf8 pragma */
5919 #define HINT_NO_AMAGIC 0x01000000 /* overloading pragma */
5921 #define HINT_RE_FLAGS 0x02000000 /* re '/xism' pragma */
5923 #define HINT_FEATURE_MASK 0x3c000000 /* 4 bits for feature bundles */
5925 /* Note: Used for HINT_M_VMSISH_*,
5926 currently defined by vms/vmsish.h:
5931 #define HINT_ALL_STRICT HINT_STRICT_REFS \
5932 | HINT_STRICT_SUBS \
5935 #ifdef USE_STRICT_BY_DEFAULT
5936 #define HINTS_DEFAULT HINT_ALL_STRICT
5938 #define HINTS_DEFAULT 0
5941 /* flags for PL_sawampersand */
5943 #define SAWAMPERSAND_LEFT 1 /* saw $` */
5944 #define SAWAMPERSAND_MIDDLE 2 /* saw $& */
5945 #define SAWAMPERSAND_RIGHT 4 /* saw $' */
5947 #ifndef PERL_SAWAMPERSAND
5948 # define PL_sawampersand \
5949 (SAWAMPERSAND_LEFT|SAWAMPERSAND_MIDDLE|SAWAMPERSAND_RIGHT)
5952 /* Used for debugvar magic */
5953 #define DBVARMG_SINGLE 0
5954 #define DBVARMG_TRACE 1
5955 #define DBVARMG_SIGNAL 2
5956 #define DBVARMG_COUNT 3
5958 #define PL_DBsingle_iv (PL_DBcontrol[DBVARMG_SINGLE])
5959 #define PL_DBtrace_iv (PL_DBcontrol[DBVARMG_TRACE])
5960 #define PL_DBsignal_iv (PL_DBcontrol[DBVARMG_SIGNAL])
5962 /* Various states of the input record separator SV (rs) */
5963 #define RsSNARF(sv) (! SvOK(sv))
5964 #define RsSIMPLE(sv) (SvOK(sv) && (! SvPOK(sv) || SvCUR(sv)))
5965 #define RsPARA(sv) (SvPOK(sv) && ! SvCUR(sv))
5966 #define RsRECORD(sv) (SvROK(sv) && (SvIV(SvRV(sv)) > 0))
5968 /* A struct for keeping various DEBUGGING related stuff,
5969 * neatly packed. Currently only scratch variables for
5970 * constructing debug output are included. Needed always,
5971 * not just when DEBUGGING, though, because of the re extension. c*/
5972 struct perl_debug_pad {
5976 #define PERL_DEBUG_PAD(i) &(PL_debug_pad.pad[i])
5977 #define PERL_DEBUG_PAD_ZERO(i) (SvPVX(PERL_DEBUG_PAD(i))[0] = 0, \
5978 (((XPV*) SvANY(PERL_DEBUG_PAD(i)))->xpv_cur = 0), \
5981 /* Enable variables which are pointers to functions */
5982 typedef void (*peep_t)(pTHX_ OP* o);
5983 typedef regexp* (*regcomp_t) (pTHX_ char* exp, char* xend, PMOP* pm);
5984 typedef I32 (*regexec_t) (pTHX_ regexp* prog, char* stringarg,
5985 char* strend, char* strbeg, I32 minend,
5986 SV* screamer, void* data, U32 flags);
5987 typedef char* (*re_intuit_start_t) (pTHX_ regexp *prog, SV *sv,
5988 char *strpos, char *strend,
5990 re_scream_pos_data *d);
5991 typedef SV* (*re_intuit_string_t) (pTHX_ regexp *prog);
5992 typedef void (*regfree_t) (pTHX_ struct regexp* r);
5993 typedef regexp* (*regdupe_t) (pTHX_ const regexp* r, CLONE_PARAMS *param);
5994 typedef I32 (*re_fold_t)(pTHX_ const char *, char const *, I32);
5996 typedef void (*DESTRUCTORFUNC_NOCONTEXT_t) (void*);
5997 typedef void (*DESTRUCTORFUNC_t) (pTHX_ void*);
5998 typedef void (*SVFUNC_t) (pTHX_ SV* const);
5999 typedef I32 (*SVCOMPARE_t) (pTHX_ SV* const, SV* const);
6000 typedef void (*XSINIT_t) (pTHX);
6001 typedef void (*ATEXIT_t) (pTHX_ void*);
6002 typedef void (*XSUBADDR_t) (pTHX_ CV *);
6004 typedef OP* (*Perl_ppaddr_t)(pTHX);
6005 typedef OP* (*Perl_check_t) (pTHX_ OP*);
6006 typedef void(*Perl_ophook_t)(pTHX_ OP*);
6007 typedef int (*Perl_keyword_plugin_t)(pTHX_ char*, STRLEN, OP**);
6008 typedef void(*Perl_cpeep_t)(pTHX_ OP *, OP *);
6010 typedef void(*globhook_t)(pTHX);
6012 #define KEYWORD_PLUGIN_DECLINE 0
6013 #define KEYWORD_PLUGIN_STMT 1
6014 #define KEYWORD_PLUGIN_EXPR 2
6016 /* Interpreter exitlist entry */
6017 typedef struct exitlistentry {
6018 void (*fn) (pTHX_ void*);
6020 } PerlExitListEntry;
6022 /* if you only have signal() and it resets on each signal, FAKE_PERSISTENT_SIGNAL_HANDLERS fixes */
6023 /* These have to be before perlvars.h */
6024 #if !defined(HAS_SIGACTION) && defined(VMS)
6025 # define FAKE_PERSISTENT_SIGNAL_HANDLERS
6027 /* if we're doing kill() with sys$sigprc on VMS, FAKE_DEFAULT_SIGNAL_HANDLERS */
6028 #if defined(KILL_BY_SIGPRC)
6029 # define FAKE_DEFAULT_SIGNAL_HANDLERS
6032 #if !defined(MULTIPLICITY)
6034 struct interpreter {
6040 /* If we have multiple interpreters define a struct
6041 holding variables which must be per-interpreter
6042 If we don't have threads anything that would have
6043 be per-thread is per-interpreter.
6046 /* Set up PERLVAR macros for populating structs */
6047 # define PERLVAR(prefix,var,type) type prefix##var;
6049 /* 'var' is an array of length 'n' */
6050 # define PERLVARA(prefix,var,n,type) type prefix##var[n];
6052 /* initialize 'var' to init' */
6053 # define PERLVARI(prefix,var,type,init) type prefix##var;
6055 /* like PERLVARI, but make 'var' a const */
6056 # define PERLVARIC(prefix,var,type,init) type prefix##var;
6058 struct interpreter {
6059 # include "intrpvar.h"
6062 EXTCONST U16 PL_interp_size
6063 INIT(sizeof(struct interpreter));
6065 # define PERL_INTERPRETER_SIZE_UPTO_MEMBER(member) \
6066 STRUCT_OFFSET(struct interpreter, member) + \
6067 sizeof(((struct interpreter*)0)->member)
6069 /* This will be useful for subsequent releases, because this has to be the
6070 same in your libperl as in main(), else you have a mismatch and must abort.
6072 EXTCONST U16 PL_interp_size_5_18_0
6073 INIT(PERL_INTERPRETER_SIZE_UPTO_MEMBER(PERL_LAST_5_18_0_INTERP_MEMBER));
6076 /* Done with PERLVAR macros for now ... */
6082 #endif /* MULTIPLICITY */
6084 struct tempsym; /* defined in pp_pack.c */
6091 #define PERL_CKDEF(s) PERL_CALLCONV OP *s (pTHX_ OP *o);
6092 #define PERL_PPDEF(s) PERL_CALLCONV OP *s (pTHX);
6095 # include "malloc_ctl.h"
6099 * This provides a layer of functions and macros to ensure extensions will
6100 * get to use the same RTL functions as the core.
6103 # include "win32iop.h"
6109 /* this has structure inits, so it cannot be included before here */
6112 /* The following must follow proto.h as #defines mess up syntax */
6114 #if !defined(PERL_FOR_X2P)
6115 # include "embedvar.h"
6118 /* Now include all the 'global' variables
6119 * If we don't have threads or multiple interpreters
6120 * these include variables that would have been their struct-s
6123 #define PERLVAR(prefix,var,type) EXT type PL_##var;
6124 #define PERLVARA(prefix,var,n,type) EXT type PL_##var[n];
6125 #define PERLVARI(prefix,var,type,init) EXT type PL_##var INIT(init);
6126 #define PERLVARIC(prefix,var,type,init) EXTCONST type PL_##var INIT(init);
6128 #if !defined(MULTIPLICITY)
6130 # include "intrpvar.h"
6132 # define PL_sv_yes (PL_sv_immortals[0])
6133 # define PL_sv_undef (PL_sv_immortals[1])
6134 # define PL_sv_no (PL_sv_immortals[2])
6135 # define PL_sv_zero (PL_sv_immortals[3])
6139 /* All core uses now exterminated. Ensure no zombies can return: */
6143 /* Now all the config stuff is setup we can include embed.h
6144 In particular, need the relevant *ish file included already, as it may
6145 define HAVE_INTERP_INTERN */
6150 # include "perlvars.h"
6159 #if !defined(MULTIPLICITY)
6160 /* Set up PERLVAR macros for populating structs */
6161 # define PERLVAR(prefix,var,type) type prefix##var;
6162 /* 'var' is an array of length 'n' */
6163 # define PERLVARA(prefix,var,n,type) type prefix##var[n];
6164 /* initialize 'var' to init' */
6165 # define PERLVARI(prefix,var,type,init) type prefix##var;
6166 /* like PERLVARI, but make 'var' a const */
6167 # define PERLVARIC(prefix,var,type,init) type prefix##var;
6169 /* this is never instantiated, is it just used for sizeof(struct PerlHandShakeInterpreter) */
6170 struct PerlHandShakeInterpreter {
6171 # include "intrpvar.h"
6181 /* dummy variables that hold pointers to both runops functions, thus forcing
6182 * them *both* to get linked in (useful for Peek.xs, debugging etc) */
6184 EXTCONST runops_proc_t PL_runops_std
6185 INIT(Perl_runops_standard);
6186 EXTCONST runops_proc_t PL_runops_dbg
6187 INIT(Perl_runops_debug);
6189 #define EXT_MGVTBL EXTCONST MGVTBL
6191 #define PERL_MAGIC_READONLY_ACCEPTABLE 0x40
6192 #define PERL_MAGIC_VALUE_MAGIC 0x80
6193 #define PERL_MAGIC_VTABLE_MASK 0x3F
6195 /* can this type of magic be attached to a readonly SV? */
6196 #define PERL_MAGIC_TYPE_READONLY_ACCEPTABLE(t) \
6197 (PL_magic_data[(U8)(t)] & PERL_MAGIC_READONLY_ACCEPTABLE)
6199 /* Is this type of magic container magic (%ENV, $1 etc),
6200 * or value magic (pos, taint etc)?
6202 #define PERL_MAGIC_TYPE_IS_VALUE_MAGIC(t) \
6203 (PL_magic_data[(U8)(t)] & PERL_MAGIC_VALUE_MAGIC)
6205 #include "mg_vtable.h"
6208 EXTCONST U8 PL_magic_data[256] =
6210 # include "umg_data.h"
6212 # include "mg_data.h"
6216 EXTCONST U8 PL_magic_data[256];
6220 /* NL IV NV PV INV PI PN MG RX GV LV AV HV CV FM IO */
6222 PL_valid_types_IVX[] = { 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0 };
6224 PL_valid_types_NVX[] = { 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0 };
6226 PL_valid_types_PVX[] = { 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1 };
6228 PL_valid_types_RV[] = { 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1 };
6230 PL_valid_types_IV_set[] = { 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1 };
6232 PL_valid_types_NV_set[] = { 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 };
6235 PL_deBruijn_bitpos_tab32[] = {
6236 /* https://graphics.stanford.edu/~seander/bithacks.html#IntegerLogDeBruijn */
6237 0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8,
6238 31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9
6242 PL_deBruijn_bitpos_tab64[] = {
6243 /* https://stackoverflow.com/questions/11376288/fast-computing-of-log2-for-64-bit-integers */
6244 63, 0, 58, 1, 59, 47, 53, 2, 60, 39, 48, 27, 54, 33, 42, 3,
6245 61, 51, 37, 40, 49, 18, 28, 20, 55, 30, 34, 11, 43, 14, 22, 4,
6246 62, 57, 46, 52, 38, 26, 32, 41, 50, 36, 17, 19, 29, 10, 13, 21,
6247 56, 45, 25, 31, 35, 16, 9, 12, 44, 24, 15, 8, 23, 7, 6, 5
6252 EXTCONST bool PL_valid_types_IVX[];
6253 EXTCONST bool PL_valid_types_NVX[];
6254 EXTCONST bool PL_valid_types_PVX[];
6255 EXTCONST bool PL_valid_types_RV[];
6256 EXTCONST bool PL_valid_types_IV_set[];
6257 EXTCONST bool PL_valid_types_NV_set[];
6258 EXTCONST U8 PL_deBruijn_bitpos_tab32[];
6259 EXTCONST U8 PL_deBruijn_bitpos_tab64[];
6263 /* The constants for using PL_deBruijn_bitpos_tab */
6264 #define PERL_deBruijnMagic32_ 0x077CB531
6265 #define PERL_deBruijnShift32_ 27
6266 #define PERL_deBruijnMagic64_ 0x07EDD5E59A4E28C2
6267 #define PERL_deBruijnShift64_ 58
6269 /* In C99 we could use designated (named field) union initializers.
6270 * In C89 we need to initialize the member declared first.
6271 * In C++ we need extern C initializers.
6273 * With the U8_NV version you will want to have inner braces,
6274 * while with the NV_U8 use just the NV. */
6276 #define INFNAN_U8_NV_DECL EXTCONST union { U8 u8[NVSIZE]; NV nv; }
6277 #define INFNAN_NV_U8_DECL EXTCONST union { NV nv; U8 u8[NVSIZE]; }
6279 /* if these never got defined, they need defaults */
6280 #ifndef PERL_SET_CONTEXT
6281 # define PERL_SET_CONTEXT(i) PERL_SET_INTERP(i)
6284 #ifndef PERL_GET_CONTEXT
6285 # define PERL_GET_CONTEXT PERL_GET_INTERP
6288 #ifndef PERL_GET_THX
6289 # define PERL_GET_THX ((void*)NULL)
6292 #ifndef PERL_SET_THX
6293 # define PERL_SET_THX(t) NOOP
6298 /* The tables below are adapted from
6299 * https://bjoern.hoehrmann.de/utf-8/decoder/dfa/, which requires this copyright
6302 Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>
6304 Permission is hereby granted, free of charge, to any person obtaining a copy of
6305 this software and associated documentation files (the "Software"), to deal in
6306 the Software without restriction, including without limitation the rights to
6307 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
6308 of the Software, and to permit persons to whom the Software is furnished to do
6309 so, subject to the following conditions:
6311 The above copyright notice and this permission notice shall be included in all
6312 copies or substantial portions of the Software.
6314 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
6315 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
6316 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
6317 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
6318 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
6319 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
6325 # if 0 /* This is the original table given in
6326 https://bjoern.hoehrmann.de/utf-8/decoder/dfa/ */
6327 static U8 utf8d_C9[] = {
6328 /* The first part of the table maps bytes to character classes that
6329 * to reduce the size of the transition table and create bitmasks. */
6330 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*/
6331 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*/
6332 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*/
6333 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*/
6334 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*/
6335 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*/
6336 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*/
6337 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*/
6339 /* The second part is a transition table that maps a combination
6340 * of a state of the automaton and a character class to a state. */
6341 0,12,24,36,60,96,84,12,12,12,48,72, 12,12,12,12,12,12,12,12,12,12,12,12,
6342 12, 0,12,12,12,12,12, 0,12, 0,12,12, 12,24,12,12,12,12,12,24,12,24,12,12,
6343 12,12,12,12,12,12,12,24,12,12,12,12, 12,24,12,12,12,12,12,12,12,24,12,12,
6344 12,12,12,12,12,12,12,36,12,36,12,12, 12,36,12,12,12,12,12,36,12,36,12,12,
6345 12,36,12,12,12,12,12,12,12,12,12,12
6350 /* This is a version of the above table customized for Perl that doesn't
6351 * exclude surrogates and accepts start bytes up through FD (FE on 64-bit
6352 * machines). The classes have been renumbered so that the patterns are more
6353 * evident in the table. The class numbers are structured so the values are:
6355 * a) UTF-8 invariant code points
6357 * b) Start bytes that always lead to either overlongs or some class of code
6358 * point that needs outside intervention for handling (such as to raise a
6361 * c) Start bytes that never lead to one of the above
6362 * number of bytes in complete sequence
6363 * d) Rest of start bytes (they can be resolved through this algorithm) and
6364 * continuation bytes
6365 * arbitrary class number chosen to not conflict with the above
6366 * classes, and to index into the remaining table
6368 * It would make the code simpler if start byte FF could also be handled, but
6369 * doing so would mean adding two more classes (one from splitting 80 from 81,
6370 * and one for FF), and nodes for each of 6 new continuation bytes. The
6371 * current table has 436 entries; the new one would require 140 more = 576 (2
6372 * additional classes for each of the 10 existing nodes, and 20 for each of 6
6373 * new nodes. The array would have to be made U16 instead of U8, not worth it
6374 * for this rarely encountered case
6377 * 00-7F 0 Always legal, single byte sequence
6378 * 80-81 7 Not legal immediately after start bytes E0 F0 F8 FC
6380 * 82-83 8 Not legal immediately after start bytes E0 F0 F8 FC
6381 * 84-87 9 Not legal immediately after start bytes E0 F0 F8
6382 * 88-8F 10 Not legal immediately after start bytes E0 F0
6383 * 90-9F 11 Not legal immediately after start byte E0
6384 * A0-BF 12 Always legal continuation byte
6385 * C0,C1 1 Not legal: overlong
6386 * C2-DF 2 Legal start byte for two byte sequences
6387 * E0 13 Some sequences are overlong; others legal
6388 * E1-EF 3 Legal start byte for three byte sequences
6389 * F0 14 Some sequences are overlong; others legal
6390 * F1-F7 4 Legal start byte for four byte sequences
6391 * F8 15 Some sequences are overlong; others legal
6392 * F9-FB 5 Legal start byte for five byte sequences
6393 * FC 16 Some sequences are overlong; others legal
6394 * FD 6 Legal start byte for six byte sequences
6395 * FE 17 Some sequences are overlong; others legal
6396 * (is 1 on 32-bit machines, since it overflows)
6397 * FF 1 Need to handle specially
6400 EXTCONST U8 PL_extended_utf8_dfa_tab[] = {
6401 /* The first part of the table maps bytes to character classes to reduce
6402 * the size of the transition table and create bitmasks. */
6403 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*00-0F*/
6404 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*10-1F*/
6405 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*20-2F*/
6406 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*30-3F*/
6407 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*40-4F*/
6408 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*50-5F*/
6409 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*60-6F*/
6410 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*70-7F*/
6411 7, 7, 8, 8, 9, 9, 9, 9,10,10,10,10,10,10,10,10, /*80-8F*/
6412 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11, /*90-9F*/
6413 12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12, /*A0-AF*/
6414 12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12, /*B0-BF*/
6415 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*C0-CF*/
6416 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*D0-DF*/
6417 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /*E0-EF*/
6418 14, 4, 4, 4, 4, 4, 4, 4,15, 5, 5, 5,16, 6, /*F0-FD*/
6426 /* The second part is a transition table that maps a combination
6427 * of a state of the automaton and a character class to a new state, called a
6428 * node. The nodes are:
6429 * N0 The initial state, and final accepting one.
6430 * N1 Any one continuation byte (80-BF) left. This is transitioned to
6431 * immediately when the start byte indicates a two-byte sequence
6432 * N2 Any two continuation bytes left.
6433 * N3 Any three continuation bytes left.
6434 * N4 Any four continuation bytes left.
6435 * N5 Any five continuation bytes left.
6436 * N6 Start byte is E0. Continuation bytes 80-9F are illegal (overlong);
6437 * the other continuations transition to N1
6438 * N7 Start byte is F0. Continuation bytes 80-8F are illegal (overlong);
6439 * the other continuations transition to N2
6440 * N8 Start byte is F8. Continuation bytes 80-87 are illegal (overlong);
6441 * the other continuations transition to N3
6442 * N9 Start byte is FC. Continuation bytes 80-83 are illegal (overlong);
6443 * the other continuations transition to N4
6444 * N10 Start byte is FE. Continuation bytes 80-81 are illegal (overlong);
6445 * the other continuations transition to N5
6446 * 1 Reject. All transitions not mentioned above (except the single
6447 * byte ones (as they are always legal)) are to this state.
6450 # if defined(PERL_CORE)
6451 # define NUM_CLASSES 18
6453 # define N1 ((N0) + NUM_CLASSES)
6454 # define N2 ((N1) + NUM_CLASSES)
6455 # define N3 ((N2) + NUM_CLASSES)
6456 # define N4 ((N3) + NUM_CLASSES)
6457 # define N5 ((N4) + NUM_CLASSES)
6458 # define N6 ((N5) + NUM_CLASSES)
6459 # define N7 ((N6) + NUM_CLASSES)
6460 # define N8 ((N7) + NUM_CLASSES)
6461 # define N9 ((N8) + NUM_CLASSES)
6462 # define N10 ((N9) + NUM_CLASSES)
6464 /*Class: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 */
6465 /*N0*/ 0, 1,N1,N2,N3,N4,N5, 1, 1, 1, 1, 1, 1,N6,N7,N8,N9,N10,
6466 /*N1*/ 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
6467 /*N2*/ 1, 1, 1, 1, 1, 1, 1,N1,N1,N1,N1,N1,N1, 1, 1, 1, 1, 1,
6468 /*N3*/ 1, 1, 1, 1, 1, 1, 1,N2,N2,N2,N2,N2,N2, 1, 1, 1, 1, 1,
6469 /*N4*/ 1, 1, 1, 1, 1, 1, 1,N3,N3,N3,N3,N3,N3, 1, 1, 1, 1, 1,
6470 /*N5*/ 1, 1, 1, 1, 1, 1, 1,N4,N4,N4,N4,N4,N4, 1, 1, 1, 1, 1,
6472 /*N6*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,N1, 1, 1, 1, 1, 1,
6473 /*N7*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,N2,N2, 1, 1, 1, 1, 1,
6474 /*N8*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,N3,N3,N3, 1, 1, 1, 1, 1,
6475 /*N9*/ 1, 1, 1, 1, 1, 1, 1, 1, 1,N4,N4,N4,N4, 1, 1, 1, 1, 1,
6476 /*N10*/ 1, 1, 1, 1, 1, 1, 1, 1,N5,N5,N5,N5,N5, 1, 1, 1, 1, 1,
6479 /* And below is a version of the above table that accepts only strict UTF-8.
6480 * Hence no surrogates nor non-characters, nor non-Unicode. Thus, if the input
6481 * passes this dfa, it will be for a well-formed, non-problematic code point
6482 * that can be returned immediately.
6484 * The "Implementation details" portion of
6485 * https://bjoern.hoehrmann.de/utf-8/decoder/dfa/ shows how
6486 * the first portion of the table maps each possible byte into a character
6487 * class. And that the classes for those bytes which are start bytes have been
6488 * carefully chosen so they serve as well to be used as a shift value to mask
6489 * off the leading 1 bits of the start byte. Unfortunately the addition of
6490 * being able to distinguish non-characters makes this not fully work. This is
6491 * because, now, the start bytes E1-EF have to be broken into 3 classes instead
6493 * 1) ED because it could be a surrogate
6494 * 2) EF because it could be a non-character
6495 * 3) the rest, which can never evaluate to a problematic code point.
6497 * Each of E1-EF has three leading 1 bits, then a 0. That means we could use a
6498 * shift (and hence class number) of either 3 or 4 to get a mask that works.
6499 * But that only allows two categories, and we need three. khw made the
6500 * decision to therefore treat the ED start byte as an error, so that the dfa
6501 * drops out immediately for that. In the dfa, classes 3 and 4 are used to
6502 * distinguish EF vs the rest. Then special code is used to deal with ED,
6503 * that's executed only when the dfa drops out. The code points started by ED
6504 * are half surrogates, and half hangul syllables. This means that 2048 of
6505 * the hangul syllables (about 18%) take longer than all other non-problematic
6506 * code points to handle.
6508 * The changes to handle non-characters requires the addition of states and
6509 * classes to the dfa. (See the section on "Mapping bytes to character
6510 * classes" in the linked-to document for further explanation of the original
6534 * F1-F3 6 (6 bits can be stripped)
6535 * F4 5 (only 5 can be stripped)
6539 EXTCONST U8 PL_strict_utf8_dfa_tab[] = {
6540 /* The first part of the table maps bytes to character classes to reduce
6541 * the size of the transition table and create bitmasks. */
6542 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*00-0F*/
6543 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*10-1F*/
6544 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*20-2F*/
6545 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*30-3F*/
6546 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*40-4F*/
6547 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*50-5F*/
6548 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*60-6F*/
6549 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*70-7F*/
6550 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,10, /*80-8F*/
6551 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,12, /*90-9F*/
6552 13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,14, /*A0-AF*/
6553 15,15,15,15,15,15,15,16,15,15,15,15,15,15,17,18, /*B0-BF*/
6554 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*C0-CF*/
6555 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*D0-DF*/
6556 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 3, 4, /*E0-EF*/
6557 8, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /*F0-FF*/
6559 /* The second part is a transition table that maps a combination
6560 * of a state of the automaton and a character class to a new state, called a
6561 * node. The nodes are:
6562 * N0 The initial state, and final accepting one.
6563 * N1 Any one continuation byte (80-BF) left. This is transitioned to
6564 * immediately when the start byte indicates a two-byte sequence
6565 * N2 Any two continuation bytes left.
6566 * N3 Start byte is E0. Continuation bytes 80-9F are illegal (overlong);
6567 * the other continuations transition to state N1
6568 * N4 Start byte is EF. Continuation byte B7 transitions to N8; BF to N9;
6569 * the other continuations transitions to N1
6570 * N5 Start byte is F0. Continuation bytes 80-8F are illegal (overlong);
6571 * [9AB]F transition to N10; the other continuations to N2.
6572 * N6 Start byte is F[123]. Continuation bytes [89AB]F transition
6573 * to N10; the other continuations to N2.
6574 * N7 Start byte is F4. Continuation bytes 90-BF are illegal
6575 * (non-unicode); 8F transitions to N10; the other continuations to N2
6576 * N8 Initial sequence is EF B7. Continuation bytes 90-AF are illegal
6577 * (non-characters); the other continuations transition to N0.
6578 * N9 Initial sequence is EF BF. Continuation bytes BE and BF are illegal
6579 * (non-characters); the other continuations transition to N0.
6580 * N10 Initial sequence is one of: F0 [9-B]F; F[123] [8-B]F; or F4 8F.
6581 * Continuation byte BF transitions to N11; the other continuations to
6583 * N11 Initial sequence is the two bytes given in N10 followed by BF.
6584 * Continuation bytes BE and BF are illegal (non-characters); the other
6585 * continuations transition to N0.
6586 * 1 Reject. All transitions not mentioned above (except the single
6587 * byte ones (as they are always legal) are to this state.
6601 # define NUM_CLASSES 19
6603 # define N1 ((N0) + NUM_CLASSES)
6604 # define N2 ((N1) + NUM_CLASSES)
6605 # define N3 ((N2) + NUM_CLASSES)
6606 # define N4 ((N3) + NUM_CLASSES)
6607 # define N5 ((N4) + NUM_CLASSES)
6608 # define N6 ((N5) + NUM_CLASSES)
6609 # define N7 ((N6) + NUM_CLASSES)
6610 # define N8 ((N7) + NUM_CLASSES)
6611 # define N9 ((N8) + NUM_CLASSES)
6612 # define N10 ((N9) + NUM_CLASSES)
6613 # define N11 ((N10) + NUM_CLASSES)
6615 /*Class: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 */
6616 /*N0*/ 0, 1, N1, N2, N4, N7, N6, N3, N5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
6617 /*N1*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
6618 /*N2*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1, N1, N1, N1, N1,
6620 /*N3*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1,
6621 /*N4*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1, N1, N8, N1, N9,
6622 /*N5*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N2,N10, N2,N10, N2, N2, N2,N10,
6623 /*N6*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2,N10, N2,N10, N2,N10, N2, N2, N2,N10,
6624 /*N7*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2,N10, 1, 1, 1, 1, 1, 1, 1, 1,
6625 /*N8*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,
6626 /*N9*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
6627 /*N10*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1, N1, N1, N1,N11,
6628 /*N11*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
6631 /* And below is yet another version of the above tables that accepts only UTF-8
6632 * as defined by Corregidum #9. Hence no surrogates nor non-Unicode, but
6633 * it allows non-characters. This is isomorphic to the original table
6634 * in https://bjoern.hoehrmann.de/utf-8/decoder/dfa/
6648 * F1-F3 6 (6 bits can be stripped)
6649 * F4 5 (only 5 can be stripped)
6653 EXTCONST U8 PL_c9_utf8_dfa_tab[] = {
6654 /* The first part of the table maps bytes to character classes to reduce
6655 * the size of the transition table and create bitmasks. */
6656 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*00-0F*/
6657 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*10-1F*/
6658 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*20-2F*/
6659 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*30-3F*/
6660 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*40-4F*/
6661 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*50-5F*/
6662 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*60-6F*/
6663 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*70-7F*/
6664 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, /*80-8F*/
6665 10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10, /*90-9F*/
6666 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11, /*A0-AF*/
6667 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11, /*B0-BF*/
6668 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*C0-CF*/
6669 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*D0-DF*/
6670 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 3, 3, /*E0-EF*/
6671 8, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /*F0-FF*/
6673 /* The second part is a transition table that maps a combination
6674 * of a state of the automaton and a character class to a new state, called a
6675 * node. The nodes are:
6676 * N0 The initial state, and final accepting one.
6677 * N1 Any one continuation byte (80-BF) left. This is transitioned to
6678 * immediately when the start byte indicates a two-byte sequence
6679 * N2 Any two continuation bytes left.
6680 * N3 Any three continuation bytes left.
6681 * N4 Start byte is E0. Continuation bytes 80-9F are illegal (overlong);
6682 * the other continuations transition to state N1
6683 * N5 Start byte is ED. Continuation bytes A0-BF all lead to surrogates,
6684 * so are illegal. The other continuations transition to state N1.
6685 * N6 Start byte is F0. Continuation bytes 80-8F are illegal (overlong);
6686 * the other continuations transition to N2
6687 * N7 Start byte is F4. Continuation bytes 90-BF are illegal
6688 * (non-unicode); the other continuations transition to N2
6689 * 1 Reject. All transitions not mentioned above (except the single
6690 * byte ones (as they are always legal) are to this state.
6702 # define NUM_CLASSES 12
6704 # define N1 ((N0) + NUM_CLASSES)
6705 # define N2 ((N1) + NUM_CLASSES)
6706 # define N3 ((N2) + NUM_CLASSES)
6707 # define N4 ((N3) + NUM_CLASSES)
6708 # define N5 ((N4) + NUM_CLASSES)
6709 # define N6 ((N5) + NUM_CLASSES)
6710 # define N7 ((N6) + NUM_CLASSES)
6712 /*Class: 0 1 2 3 4 5 6 7 8 9 10 11 */
6713 /*N0*/ 0, 1, N1, N2, N5, N7, N3, N4, N6, 1, 1, 1,
6714 /*N1*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0,
6715 /*N2*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1,
6716 /*N3*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2, N2, N2,
6718 /*N4*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N1,
6719 /*N5*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, 1,
6720 /*N6*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N2, N2,
6721 /*N7*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2, 1, 1,
6724 # endif /* defined(PERL_CORE) */
6725 # else /* End of is DOINIT */
6727 EXTCONST U8 PL_extended_utf8_dfa_tab[];
6728 EXTCONST U8 PL_strict_utf8_dfa_tab[];
6729 EXTCONST U8 PL_c9_utf8_dfa_tab[];
6732 #endif /* end of isn't EBCDIC */
6734 #include "overload.h"
6743 CV* table[NofAMmeth];
6745 struct am_table_short {
6751 typedef struct am_table AMT;
6752 typedef struct am_table_short AMTS;
6754 #define AMGfallNEVER 1
6756 #define AMGfallYES 3
6758 #define AMTf_AMAGIC 1
6759 #define AMT_AMAGIC(amt) ((amt)->flags & AMTf_AMAGIC)
6760 #define AMT_AMAGIC_on(amt) ((amt)->flags |= AMTf_AMAGIC)
6761 #define AMT_AMAGIC_off(amt) ((amt)->flags &= ~AMTf_AMAGIC)
6763 #define StashHANDLER(stash,meth) gv_handler((stash),CAT2(meth,_amg))
6766 * some compilers like to redefine cos et alia as faster
6767 * (and less accurate?) versions called F_cos et cetera (Quidquid
6768 * latine dictum sit, altum viditur.) This trick collides with
6769 * the Perl overloading (amg). The following #defines fool both.
6774 # define F_atan2_amg atan2_amg
6777 # define F_cos_amg cos_amg
6780 # define F_exp_amg exp_amg
6783 # define F_log_amg log_amg
6786 # define F_pow_amg pow_amg
6789 # define F_sin_amg sin_amg
6792 # define F_sqrt_amg sqrt_amg
6794 #endif /* _FASTMATH */
6796 #define PERLDB_ALL (PERLDBf_SUB | PERLDBf_LINE | \
6797 PERLDBf_NOOPT | PERLDBf_INTER | \
6798 PERLDBf_SUBLINE| PERLDBf_SINGLE| \
6799 PERLDBf_NAMEEVAL| PERLDBf_NAMEANON | \
6801 /* No _NONAME, _GOTO */
6802 #define PERLDBf_SUB 0x01 /* Debug sub enter/exit */
6803 #define PERLDBf_LINE 0x02 /* Keep line # */
6804 #define PERLDBf_NOOPT 0x04 /* Switch off optimizations */
6805 #define PERLDBf_INTER 0x08 /* Preserve more data for
6806 later inspections */
6807 #define PERLDBf_SUBLINE 0x10 /* Keep subr source lines */
6808 #define PERLDBf_SINGLE 0x20 /* Start with single-step on */
6809 #define PERLDBf_NONAME 0x40 /* For _SUB: no name of the subr */
6810 #define PERLDBf_GOTO 0x80 /* Report goto: call DB::goto */
6811 #define PERLDBf_NAMEEVAL 0x100 /* Informative names for evals */
6812 #define PERLDBf_NAMEANON 0x200 /* Informative names for anon subs */
6813 #define PERLDBf_SAVESRC 0x400 /* Save source lines into @{"_<$filename"} */
6814 #define PERLDBf_SAVESRC_NOSUBS 0x800 /* Including evals that generate no subroutines */
6815 #define PERLDBf_SAVESRC_INVALID 0x1000 /* Save source that did not compile */
6817 #define PERLDB_SUB (PL_perldb & PERLDBf_SUB)
6818 #define PERLDB_LINE (PL_perldb & PERLDBf_LINE)
6819 #define PERLDB_NOOPT (PL_perldb & PERLDBf_NOOPT)
6820 #define PERLDB_INTER (PL_perldb & PERLDBf_INTER)
6821 #define PERLDB_SUBLINE (PL_perldb & PERLDBf_SUBLINE)
6822 #define PERLDB_SINGLE (PL_perldb & PERLDBf_SINGLE)
6823 #define PERLDB_SUB_NN (PL_perldb & PERLDBf_NONAME)
6824 #define PERLDB_GOTO (PL_perldb & PERLDBf_GOTO)
6825 #define PERLDB_NAMEEVAL (PL_perldb & PERLDBf_NAMEEVAL)
6826 #define PERLDB_NAMEANON (PL_perldb & PERLDBf_NAMEANON)
6827 #define PERLDB_SAVESRC (PL_perldb & PERLDBf_SAVESRC)
6828 #define PERLDB_SAVESRC_NOSUBS (PL_perldb & PERLDBf_SAVESRC_NOSUBS)
6829 #define PERLDB_SAVESRC_INVALID (PL_perldb & PERLDBf_SAVESRC_INVALID)
6831 #define PERLDB_LINE_OR_SAVESRC (PL_perldb & (PERLDBf_LINE | PERLDBf_SAVESRC))
6834 # define KEYWORD_PLUGIN_MUTEX_INIT MUTEX_INIT(&PL_keyword_plugin_mutex)
6835 # define KEYWORD_PLUGIN_MUTEX_LOCK MUTEX_LOCK(&PL_keyword_plugin_mutex)
6836 # define KEYWORD_PLUGIN_MUTEX_UNLOCK MUTEX_UNLOCK(&PL_keyword_plugin_mutex)
6837 # define KEYWORD_PLUGIN_MUTEX_TERM MUTEX_DESTROY(&PL_keyword_plugin_mutex)
6838 # define USER_PROP_MUTEX_INIT MUTEX_INIT(&PL_user_prop_mutex)
6839 # define USER_PROP_MUTEX_LOCK MUTEX_LOCK(&PL_user_prop_mutex)
6840 # define USER_PROP_MUTEX_UNLOCK MUTEX_UNLOCK(&PL_user_prop_mutex)
6841 # define USER_PROP_MUTEX_TERM MUTEX_DESTROY(&PL_user_prop_mutex)
6843 # define KEYWORD_PLUGIN_MUTEX_INIT NOOP
6844 # define KEYWORD_PLUGIN_MUTEX_LOCK NOOP
6845 # define KEYWORD_PLUGIN_MUTEX_UNLOCK NOOP
6846 # define KEYWORD_PLUGIN_MUTEX_TERM NOOP
6847 # define USER_PROP_MUTEX_INIT NOOP
6848 # define USER_PROP_MUTEX_LOCK NOOP
6849 # define USER_PROP_MUTEX_UNLOCK NOOP
6850 # define USER_PROP_MUTEX_TERM NOOP
6853 #ifdef USE_LOCALE /* These locale things are all subject to change */
6855 /* Returns TRUE if the plain locale pragma without a parameter is in effect.
6857 # define IN_LOCALE_RUNTIME (PL_curcop \
6858 && CopHINTS_get(PL_curcop) & HINT_LOCALE)
6860 /* Returns TRUE if either form of the locale pragma is in effect */
6861 # define IN_SOME_LOCALE_FORM_RUNTIME \
6862 cBOOL(CopHINTS_get(PL_curcop) & (HINT_LOCALE|HINT_LOCALE_PARTIAL))
6864 # define IN_LOCALE_COMPILETIME cBOOL(PL_hints & HINT_LOCALE)
6865 # define IN_SOME_LOCALE_FORM_COMPILETIME \
6866 cBOOL(PL_hints & (HINT_LOCALE|HINT_LOCALE_PARTIAL))
6869 =for apidoc_section $locale
6871 =for apidoc Amn|bool|IN_LOCALE
6873 Evaluates to TRUE if the plain locale pragma without a parameter (S<C<use
6874 locale>>) is in effect.
6876 =for apidoc Amn|bool|IN_LOCALE_COMPILETIME
6878 Evaluates to TRUE if, when compiling a perl program (including an C<eval>) if
6879 the plain locale pragma without a parameter (S<C<use locale>>) is in effect.
6881 =for apidoc Amn|bool|IN_LOCALE_RUNTIME
6883 Evaluates to TRUE if, when executing a perl program (including an C<eval>) if
6884 the plain locale pragma without a parameter (S<C<use locale>>) is in effect.
6889 # define IN_LOCALE \
6890 (IN_PERL_COMPILETIME ? IN_LOCALE_COMPILETIME : IN_LOCALE_RUNTIME)
6891 # define IN_SOME_LOCALE_FORM \
6892 (IN_PERL_COMPILETIME ? IN_SOME_LOCALE_FORM_COMPILETIME \
6893 : IN_SOME_LOCALE_FORM_RUNTIME)
6895 # define IN_LC_ALL_COMPILETIME IN_LOCALE_COMPILETIME
6896 # define IN_LC_ALL_RUNTIME IN_LOCALE_RUNTIME
6898 # define IN_LC_PARTIAL_COMPILETIME cBOOL(PL_hints & HINT_LOCALE_PARTIAL)
6899 # define IN_LC_PARTIAL_RUNTIME \
6900 (PL_curcop && CopHINTS_get(PL_curcop) & HINT_LOCALE_PARTIAL)
6902 # define IN_LC_COMPILETIME(category) \
6903 ( IN_LC_ALL_COMPILETIME \
6904 || ( IN_LC_PARTIAL_COMPILETIME \
6905 && Perl__is_in_locale_category(aTHX_ TRUE, (category))))
6906 # define IN_LC_RUNTIME(category) \
6907 (IN_LC_ALL_RUNTIME || (IN_LC_PARTIAL_RUNTIME \
6908 && Perl__is_in_locale_category(aTHX_ FALSE, (category))))
6909 # define IN_LC(category) \
6910 (IN_LC_COMPILETIME(category) || IN_LC_RUNTIME(category))
6912 # if defined (PERL_CORE) || defined (PERL_IN_XSUB_RE)
6914 /* This internal macro should be called from places that operate under
6915 * locale rules. If there is a problem with the current locale that
6916 * hasn't been raised yet, it will output a warning this time. Because
6917 * this will so rarely be true, there is no point to optimize for time;
6918 * instead it makes sense to minimize space used and do all the work in
6919 * the rarely called function */
6920 # ifdef USE_LOCALE_CTYPE
6921 # define CHECK_AND_WARN_PROBLEMATIC_LOCALE_ \
6923 if (UNLIKELY(PL_warn_locale)) { \
6924 Perl__warn_problematic_locale(); \
6928 # define CHECK_AND_WARN_PROBLEMATIC_LOCALE_
6932 /* These two internal macros are called when a warning should be raised,
6933 * and will do so if enabled. The first takes a single code point
6934 * argument; the 2nd, is a pointer to the first byte of the UTF-8 encoded
6935 * string, and an end position which it won't try to read past */
6936 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_CP_MSG(cp) \
6938 if (! PL_in_utf8_CTYPE_locale && ckWARN(WARN_LOCALE)) { \
6939 Perl_warner(aTHX_ packWARN(WARN_LOCALE), \
6940 "Wide character (U+%" UVXf ") in %s",\
6941 (UV) cp, OP_DESC(PL_op)); \
6945 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(s, send) \
6946 STMT_START { /* Check if to warn before doing the conversion work */\
6947 if (! PL_in_utf8_CTYPE_locale && ckWARN(WARN_LOCALE)) { \
6948 UV cp = utf8_to_uvchr_buf((U8 *) (s), (U8 *) (send), NULL); \
6949 Perl_warner(aTHX_ packWARN(WARN_LOCALE), \
6950 "Wide character (U+%" UVXf ") in %s", \
6952 ? UNICODE_REPLACEMENT \
6958 # endif /* PERL_CORE or PERL_IN_XSUB_RE */
6959 #else /* No locale usage */
6960 # define IN_LOCALE_RUNTIME 0
6961 # define IN_SOME_LOCALE_FORM_RUNTIME 0
6962 # define IN_LOCALE_COMPILETIME 0
6963 # define IN_SOME_LOCALE_FORM_COMPILETIME 0
6964 # define IN_LOCALE 0
6965 # define IN_SOME_LOCALE_FORM 0
6966 # define IN_LC_ALL_COMPILETIME 0
6967 # define IN_LC_ALL_RUNTIME 0
6968 # define IN_LC_PARTIAL_COMPILETIME 0
6969 # define IN_LC_PARTIAL_RUNTIME 0
6970 # define IN_LC_COMPILETIME(category) 0
6971 # define IN_LC_RUNTIME(category) 0
6972 # define IN_LC(category) 0
6973 # define CHECK_AND_WARN_PROBLEMATIC_LOCALE_
6974 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(s, send)
6975 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_CP_MSG(c)
6978 #define locale_panic_(m) Perl_locale_panic((m), __FILE__, __LINE__, errno)
6980 /* Locale/thread synchronization macros. */
6981 #if ! ( defined(USE_LOCALE) \
6982 && defined(USE_LOCALE_THREADS) \
6983 && ( ! defined(USE_THREAD_SAFE_LOCALE) \
6984 || ( defined(HAS_LOCALECONV) \
6985 && ( ! defined(HAS_LOCALECONV_L) \
6986 || defined(TS_W32_BROKEN_LOCALECONV))) \
6987 || ( defined(HAS_NL_LANGINFO) \
6988 && ! defined(HAS_THREAD_SAFE_NL_LANGINFO_L)) \
6989 || (defined(HAS_MBLEN) && ! defined(HAS_MBRLEN)) \
6990 || (defined(HAS_MBTOWC) && ! defined(HAS_MBRTOWC)) \
6991 || (defined(HAS_WCTOMB) && ! defined(HAS_WCRTOMB))))
6993 /* The whole expression just above was complemented, so here we have no need
6994 * for thread synchronization, most likely it would be that this isn't a
6995 * threaded build. */
6996 # define LOCALE_INIT
6997 # define LOCALE_TERM
6998 # define LC_NUMERIC_LOCK(cond) NOOP
6999 # define LC_NUMERIC_UNLOCK NOOP
7000 # define LOCALECONV_LOCK NOOP
7001 # define LOCALECONV_UNLOCK NOOP
7002 # define LOCALE_READ_LOCK NOOP
7003 # define LOCALE_READ_UNLOCK NOOP
7004 # define MBLEN_LOCK NOOP
7005 # define MBLEN_UNLOCK NOOP
7006 # define MBTOWC_LOCK NOOP
7007 # define MBTOWC_UNLOCK NOOP
7008 # define NL_LANGINFO_LOCK NOOP
7009 # define NL_LANGINFO_UNLOCK NOOP
7010 # define SETLOCALE_LOCK NOOP
7011 # define SETLOCALE_UNLOCK NOOP
7012 # define WCTOMB_LOCK NOOP
7013 # define WCTOMB_UNLOCK NOOP
7016 /* Here, we will need critical sections in locale handling, because one or
7017 * more of the above conditions are true. This could be because the
7018 * platform doesn't have thread-safe locales, or that at least one of the
7019 * locale-dependent functions in the core isn't thread-safe. The latter
7020 * case is generally because they return a pointer to a static buffer, which
7021 * may be per-process instead of per-thread. There are supposedly
7022 * re-entrant, safe versions for all of them Perl currently uses (which the
7023 * #if above checks for), but most platforms don't have all the needed ones
7024 * available, and the Posix standard doesn't require nl_langinfo_l() to be
7025 * fully thread-safe, so a Configure probe was written. localeconv_l() is
7026 * uncommon, and judging by bug reports on the web, some earlier library
7027 * localeconv_l versions were broken, so perhaps a probe is in order for
7028 * that, but it would be a pain to write.
7030 * On non-thread-safe systems, some of the above functions are vulnerable to
7031 * races should another thread get control and change the locale in the
7032 * middle of their execution.
7034 * We currently use a single mutex for all these cases. This solves both
7035 * the problem of another thread changing the locale, and the buffer being
7036 * overwritten (the code copies the results to a safe place before releasing
7037 * the mutex). Ideally, for locale thread-safe platforms where the only
7038 * issue is another thread clobbering the function's static buffer, there
7039 * would be a separate mutex for each such buffer. Otherwise, things get
7040 * locked that don't need to. But, it is not expected that any of these
7041 * will be called frequently, and the locked interval should be short, and
7042 * modern platforms will have reentrant versions (which don't lock) for
7043 * almost all of them, so khw thinks a single mutex should suffice. */
7044 # define LOCALE_LOCK_ \
7046 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7047 "%s: %d: locking locale\n", __FILE__, __LINE__)); \
7048 MUTEX_LOCK(&PL_locale_mutex); \
7050 # define LOCALE_UNLOCK_ \
7052 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7053 "%s: %d: unlocking locale\n", __FILE__, __LINE__)); \
7054 MUTEX_UNLOCK(&PL_locale_mutex); \
7057 /* We do define a different macro for each case; then if we want to have
7058 * separate mutexes for some of them, the only changes needed are here.
7059 * Define just the necessary macros. The compiler should then croak if the
7060 * #ifdef's in the code are incorrect */
7061 # if defined(HAS_LOCALECONV) && ( ! defined(USE_POSIX_2008_LOCALE) \
7062 || ! defined(HAS_LOCALECONV_L) \
7063 || defined(TS_W32_BROKEN_LOCALECONV))
7064 # define LOCALECONV_LOCK LOCALE_LOCK_
7065 # define LOCALECONV_UNLOCK LOCALE_UNLOCK_
7067 # if defined(HAS_NL_LANGINFO) && ( ! defined(HAS_THREAD_SAFE_NL_LANGINFO_L) \
7068 || ! defined(USE_POSIX_2008_LOCALE))
7069 # define NL_LANGINFO_LOCK LOCALE_LOCK_
7070 # define NL_LANGINFO_UNLOCK LOCALE_UNLOCK_
7072 # if defined(HAS_MBLEN) && ! defined(HAS_MBRLEN)
7073 # define MBLEN_LOCK LOCALE_LOCK_
7074 # define MBLEN_UNLOCK LOCALE_UNLOCK_
7076 # if defined(HAS_MBTOWC) && ! defined(HAS_MBRTOWC)
7077 # define MBTOWC_LOCK LOCALE_LOCK_
7078 # define MBTOWC_UNLOCK LOCALE_UNLOCK_
7080 # if defined(HAS_WCTOMB) && ! defined(HAS_WCRTOMB)
7081 # define WCTOMB_LOCK LOCALE_LOCK_
7082 # define WCTOMB_UNLOCK LOCALE_UNLOCK_
7084 # if defined(USE_THREAD_SAFE_LOCALE)
7085 /* On locale thread-safe systems, we don't need these workarounds */
7086 # define LOCALE_TERM_LC_NUMERIC_ NOOP
7087 # define LOCALE_INIT_LC_NUMERIC_ NOOP
7088 # define LC_NUMERIC_LOCK(cond) NOOP
7089 # define LC_NUMERIC_UNLOCK NOOP
7090 # define LOCALE_INIT_LC_NUMERIC_ NOOP
7091 # define LOCALE_TERM_LC_NUMERIC_ NOOP
7093 /* There may be instance core where we this is invoked yet should do
7094 * nothing. Rather than have #ifdef's around them, define it here */
7095 # define SETLOCALE_LOCK NOOP
7096 # define SETLOCALE_UNLOCK NOOP
7098 # define SETLOCALE_LOCK LOCALE_LOCK_
7099 # define SETLOCALE_UNLOCK LOCALE_UNLOCK_
7101 /* On platforms without per-thread locales, when another thread can switch
7102 * our locale, we need another mutex to create critical sections where we
7103 * want the LC_NUMERIC locale to be locked into either the C (standard)
7104 * locale, or the underlying locale, so that other threads interrupting
7105 * this one don't change it to the wrong state before we've had a chance to
7106 * complete our operation. It can stay locked over an entire printf
7107 * operation, for example. And so is made distinct from the LOCALE_LOCK
7110 * This simulates kind of a general semaphore. The current thread will
7111 * lock the mutex if the per-thread variable is zero, and then increments
7112 * that variable. Each corresponding UNLOCK decrements the variable until
7113 * it is 0, at which point it actually unlocks the mutex. Since the
7114 * variable is per-thread, there is no race with other threads.
7116 * The single argument is a condition to test for, and if true, to panic,
7117 * as this would be an attempt to complement the LC_NUMERIC state, and
7118 * we're not supposed to because it's locked.
7120 * Clang improperly gives warnings for this, if not silenced:
7121 * https://clang.llvm.org/docs/ThreadSafetyAnalysis.html#conditional-locks
7123 * If LC_NUMERIC_LOCK is combined with one of the LOCKs above, calls to
7124 * that and its corresponding unlock should be contained entirely within
7125 * the locked portion of LC_NUMERIC. Those mutexes should be used only in
7126 * very short sections of code, while LC_NUMERIC_LOCK may span more
7127 * operations. By always following this convention, deadlock should be
7128 * impossible. But if necessary, the two mutexes could be combined. */
7129 # define LC_NUMERIC_LOCK(cond_to_panic_if_already_locked) \
7130 CLANG_DIAG_IGNORE(-Wthread-safety) \
7132 if (PL_lc_numeric_mutex_depth <= 0) { \
7133 MUTEX_LOCK(&PL_lc_numeric_mutex); \
7134 PL_lc_numeric_mutex_depth = 1; \
7135 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7136 "%s: %d: locking lc_numeric; depth=1\n", \
7137 __FILE__, __LINE__)); \
7140 PL_lc_numeric_mutex_depth++; \
7141 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7142 "%s: %d: avoided lc_numeric_lock; new depth=%d\n", \
7143 __FILE__, __LINE__, PL_lc_numeric_mutex_depth)); \
7144 if (cond_to_panic_if_already_locked) { \
7145 locale_panic_("Trying to change LC_NUMERIC incompatibly");\
7150 # define LC_NUMERIC_UNLOCK \
7152 if (PL_lc_numeric_mutex_depth <= 1) { \
7153 MUTEX_UNLOCK(&PL_lc_numeric_mutex); \
7154 PL_lc_numeric_mutex_depth = 0; \
7155 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7156 "%s: %d: unlocking lc_numeric; depth=0\n", \
7157 __FILE__, __LINE__)); \
7160 PL_lc_numeric_mutex_depth--; \
7161 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7162 "%s: %d: avoided lc_numeric_unlock; new depth=%d\n",\
7163 __FILE__, __LINE__, PL_lc_numeric_mutex_depth)); \
7168 # define LOCALE_INIT_LC_NUMERIC_ MUTEX_INIT(&PL_lc_numeric_mutex)
7169 # define LOCALE_TERM_LC_NUMERIC_ MUTEX_DESTROY(&PL_lc_numeric_mutex)
7172 # ifdef USE_POSIX_2008_LOCALE
7173 /* We have a locale object holding the 'C' locale for Posix 2008 */
7174 # define LOCALE_TERM_POSIX_2008_ \
7176 if (PL_C_locale_obj) { \
7177 /* Make sure we aren't using the locale \
7178 * space we are about to free */ \
7179 uselocale(LC_GLOBAL_LOCALE); \
7180 freelocale(PL_C_locale_obj); \
7181 PL_C_locale_obj = (locale_t) NULL; \
7185 # define LOCALE_TERM_POSIX_2008_ NOOP
7188 # define LOCALE_INIT STMT_START { \
7189 MUTEX_INIT(&PL_locale_mutex); \
7190 LOCALE_INIT_LC_NUMERIC_; \
7193 # define LOCALE_TERM STMT_START { \
7194 MUTEX_DESTROY(&PL_locale_mutex); \
7195 LOCALE_TERM_LC_NUMERIC_; \
7196 LOCALE_TERM_POSIX_2008_; \
7200 #ifdef USE_LOCALE_NUMERIC
7202 /* These macros are for toggling between the underlying locale (UNDERLYING or
7203 * LOCAL) and the C locale (STANDARD). (Actually we don't have to use the C
7204 * locale if the underlying locale is indistinguishable from it in the numeric
7205 * operations used by Perl, namely the decimal point, and even the thousands
7208 =for apidoc_section $locale
7210 =for apidoc Amn|void|DECLARATION_FOR_LC_NUMERIC_MANIPULATION
7212 This macro should be used as a statement. It declares a private variable
7213 (whose name begins with an underscore) that is needed by the other macros in
7214 this section. Failing to include this correctly should lead to a syntax error.
7215 For compatibility with C89 C compilers it should be placed in a block before
7216 any executable statements.
7218 =for apidoc Am|void|STORE_LC_NUMERIC_FORCE_TO_UNDERLYING
7220 This is used by XS code that is C<LC_NUMERIC> locale-aware to force the
7221 locale for category C<LC_NUMERIC> to be what perl thinks is the current
7222 underlying locale. (The perl interpreter could be wrong about what the
7223 underlying locale actually is if some C or XS code has called the C library
7224 function L<setlocale(3)> behind its back; calling L</sync_locale> before calling
7225 this macro will update perl's records.)
7227 A call to L</DECLARATION_FOR_LC_NUMERIC_MANIPULATION> must have been made to
7228 declare at compile time a private variable used by this macro. This macro
7229 should be called as a single statement, not an expression, but with an empty
7230 argument list, like this:
7233 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
7235 STORE_LC_NUMERIC_FORCE_TO_UNDERLYING();
7237 RESTORE_LC_NUMERIC();
7241 The private variable is used to save the current locale state, so
7242 that the requisite matching call to L</RESTORE_LC_NUMERIC> can restore it.
7244 On threaded perls not operating with thread-safe functionality, this macro uses
7245 a mutex to force a critical section. Therefore the matching RESTORE should be
7246 close by, and guaranteed to be called.
7248 =for apidoc Am|void|STORE_LC_NUMERIC_SET_TO_NEEDED
7250 This is used to help wrap XS or C code that is C<LC_NUMERIC> locale-aware.
7251 This locale category is generally kept set to a locale where the decimal radix
7252 character is a dot, and the separator between groups of digits is empty. This
7253 is because most XS code that reads floating point numbers is expecting them to
7256 This macro makes sure the current C<LC_NUMERIC> state is set properly, to be
7257 aware of locale if the call to the XS or C code from the Perl program is
7258 from within the scope of a S<C<use locale>>; or to ignore locale if the call is
7259 instead from outside such scope.
7261 This macro is the start of wrapping the C or XS code; the wrap ending is done
7262 by calling the L</RESTORE_LC_NUMERIC> macro after the operation. Otherwise
7263 the state can be changed that will adversely affect other XS code.
7265 A call to L</DECLARATION_FOR_LC_NUMERIC_MANIPULATION> must have been made to
7266 declare at compile time a private variable used by this macro. This macro
7267 should be called as a single statement, not an expression, but with an empty
7268 argument list, like this:
7271 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
7273 STORE_LC_NUMERIC_SET_TO_NEEDED();
7275 RESTORE_LC_NUMERIC();
7279 On threaded perls not operating with thread-safe functionality, this macro uses
7280 a mutex to force a critical section. Therefore the matching RESTORE should be
7281 close by, and guaranteed to be called; see L</WITH_LC_NUMERIC_SET_TO_NEEDED>
7282 for a more contained way to ensure that.
7284 =for apidoc Am|void|STORE_LC_NUMERIC_SET_TO_NEEDED_IN|bool in_lc_numeric
7286 Same as L</STORE_LC_NUMERIC_SET_TO_NEEDED> with in_lc_numeric provided
7287 as the precalculated value of C<IN_LC(LC_NUMERIC)>. It is the caller's
7288 responsibility to ensure that the status of C<PL_compiling> and C<PL_hints>
7289 cannot have changed since the precalculation.
7291 =for apidoc Am|void|RESTORE_LC_NUMERIC
7293 This is used in conjunction with one of the macros
7294 L</STORE_LC_NUMERIC_SET_TO_NEEDED>
7295 and L</STORE_LC_NUMERIC_FORCE_TO_UNDERLYING> to properly restore the
7296 C<LC_NUMERIC> state.
7298 A call to L</DECLARATION_FOR_LC_NUMERIC_MANIPULATION> must have been made to
7299 declare at compile time a private variable used by this macro and the two
7300 C<STORE> ones. This macro should be called as a single statement, not an
7301 expression, but with an empty argument list, like this:
7304 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
7306 RESTORE_LC_NUMERIC();
7310 =for apidoc Am|void|WITH_LC_NUMERIC_SET_TO_NEEDED|block
7312 This macro invokes the supplied statement or block within the context
7313 of a L</STORE_LC_NUMERIC_SET_TO_NEEDED> .. L</RESTORE_LC_NUMERIC> pair
7316 WITH_LC_NUMERIC_SET_TO_NEEDED(
7317 SNPRINTF_G(fv, ebuf, sizeof(ebuf), precis)
7323 #ifdef USE_LOCALE_NUMERIC
7324 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
7325 STORE_LC_NUMERIC_SET_TO_NEEDED();
7327 SNPRINTF_G(fv, ebuf, sizeof(ebuf), precis);
7328 #ifdef USE_LOCALE_NUMERIC
7329 RESTORE_LC_NUMERIC();
7333 =for apidoc Am|void|WITH_LC_NUMERIC_SET_TO_NEEDED_IN|bool in_lc_numeric|block
7335 Same as L</WITH_LC_NUMERIC_SET_TO_NEEDED> with in_lc_numeric provided
7336 as the precalculated value of C<IN_LC(LC_NUMERIC)>. It is the caller's
7337 responsibility to ensure that the status of C<PL_compiling> and C<PL_hints>
7338 cannot have changed since the precalculation.
7344 /* If the underlying numeric locale has a non-dot decimal point or has a
7345 * non-empty floating point thousands separator, the current locale is instead
7346 * generally kept in the C locale instead of that underlying locale. The
7347 * current status is known by looking at two words. One is non-zero if the
7348 * current numeric locale is the standard C/POSIX one or is indistinguishable
7349 * from C. The other is non-zero if the current locale is the underlying
7350 * locale. Both can be non-zero if, as often happens, the underlying locale is
7351 * C or indistinguishable from it.
7353 * khw believes the reason for the variables instead of the bits in a single
7354 * word is to avoid having to have masking instructions. */
7356 # define NOT_IN_NUMERIC_STANDARD_ (! PL_numeric_standard)
7358 /* We can lock the category to stay in the C locale, making requests to the
7359 * contrary be noops, in the dynamic scope by setting PL_numeric_standard to 2.
7361 # define NOT_IN_NUMERIC_UNDERLYING_ \
7362 (! PL_numeric_underlying && PL_numeric_standard < 2)
7364 # define DECLARATION_FOR_LC_NUMERIC_MANIPULATION \
7365 void (*_restore_LC_NUMERIC_function)(pTHX) = NULL
7367 # define STORE_LC_NUMERIC_SET_TO_NEEDED_IN(in) \
7369 bool _in_lc_numeric = (in); \
7371 ( ( _in_lc_numeric && NOT_IN_NUMERIC_UNDERLYING_) \
7372 || (! _in_lc_numeric && NOT_IN_NUMERIC_STANDARD_))); \
7373 if (_in_lc_numeric) { \
7374 if (NOT_IN_NUMERIC_UNDERLYING_) { \
7375 Perl_set_numeric_underlying(aTHX); \
7376 _restore_LC_NUMERIC_function \
7377 = &Perl_set_numeric_standard; \
7381 if (NOT_IN_NUMERIC_STANDARD_) { \
7382 Perl_set_numeric_standard(aTHX); \
7383 _restore_LC_NUMERIC_function \
7384 = &Perl_set_numeric_underlying; \
7389 # define STORE_LC_NUMERIC_SET_TO_NEEDED() \
7390 STORE_LC_NUMERIC_SET_TO_NEEDED_IN(IN_LC(LC_NUMERIC))
7392 # define RESTORE_LC_NUMERIC() \
7394 if (_restore_LC_NUMERIC_function) { \
7395 _restore_LC_NUMERIC_function(aTHX); \
7397 LC_NUMERIC_UNLOCK; \
7400 /* The next two macros should be rarely used, and only after being sure that
7401 * this is what is needed */
7402 # define SET_NUMERIC_STANDARD() \
7404 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7405 "%s: %d: lc_numeric standard=%d\n", \
7406 __FILE__, __LINE__, PL_numeric_standard)); \
7407 if (UNLIKELY(NOT_IN_NUMERIC_STANDARD_)) { \
7408 Perl_set_numeric_standard(aTHX); \
7410 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7411 "%s: %d: lc_numeric standard=%d\n", \
7412 __FILE__, __LINE__, PL_numeric_standard)); \
7415 # define SET_NUMERIC_UNDERLYING() \
7417 /*assert(PL_locale_mutex_depth > 0);*/ \
7418 if (NOT_IN_NUMERIC_UNDERLYING_) { \
7419 Perl_set_numeric_underlying(aTHX); \
7423 /* The rest of these LC_NUMERIC macros toggle to one or the other state, with
7424 * the RESTORE_foo ones called to switch back, but only if need be */
7425 # define STORE_LC_NUMERIC_SET_STANDARD() \
7427 LC_NUMERIC_LOCK(NOT_IN_NUMERIC_STANDARD_); \
7428 if (NOT_IN_NUMERIC_STANDARD_) { \
7429 _restore_LC_NUMERIC_function = &Perl_set_numeric_underlying;\
7430 Perl_set_numeric_standard(aTHX); \
7434 /* Rarely, we want to change to the underlying locale even outside of 'use
7435 * locale'. This is principally in the POSIX:: functions */
7436 # define STORE_LC_NUMERIC_FORCE_TO_UNDERLYING() \
7438 LC_NUMERIC_LOCK(NOT_IN_NUMERIC_UNDERLYING_); \
7439 if (NOT_IN_NUMERIC_UNDERLYING_) { \
7440 Perl_set_numeric_underlying(aTHX); \
7441 _restore_LC_NUMERIC_function = &Perl_set_numeric_standard; \
7445 /* Lock/unlock to the C locale until unlock is called. This needs to be
7446 * recursively callable. [perl #128207] */
7447 # define LOCK_LC_NUMERIC_STANDARD() \
7449 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7450 "%s: %d: lc_numeric_standard now locked to depth %d\n", \
7451 __FILE__, __LINE__, PL_numeric_standard)); \
7452 __ASSERT_(PL_numeric_standard) \
7453 PL_numeric_standard++; \
7456 # define UNLOCK_LC_NUMERIC_STANDARD() \
7458 if (PL_numeric_standard > 1) { \
7459 PL_numeric_standard--; \
7464 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
7465 "%s: %d: ", __FILE__, __LINE__); \
7466 if (PL_numeric_standard <= 1) \
7467 PerlIO_printf(Perl_debug_log, \
7468 "lc_numeric_standard now unlocked\n");\
7469 else PerlIO_printf(Perl_debug_log, \
7470 "lc_numeric_standard lock decremented to depth %d\n", \
7471 PL_numeric_standard););\
7474 # define WITH_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric, block) \
7476 DECLARATION_FOR_LC_NUMERIC_MANIPULATION; \
7477 STORE_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric); \
7479 RESTORE_LC_NUMERIC(); \
7482 # define WITH_LC_NUMERIC_SET_TO_NEEDED(block) \
7483 WITH_LC_NUMERIC_SET_TO_NEEDED_IN(IN_LC(LC_NUMERIC), block)
7485 #else /* !USE_LOCALE_NUMERIC */
7487 # define SET_NUMERIC_STANDARD()
7488 # define SET_NUMERIC_UNDERLYING()
7489 # define IS_NUMERIC_RADIX(a, b) (0)
7490 # define DECLARATION_FOR_LC_NUMERIC_MANIPULATION dNOOP
7491 # define STORE_LC_NUMERIC_SET_STANDARD()
7492 # define STORE_LC_NUMERIC_FORCE_TO_UNDERLYING()
7493 # define STORE_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric)
7494 # define STORE_LC_NUMERIC_SET_TO_NEEDED()
7495 # define RESTORE_LC_NUMERIC()
7496 # define LOCK_LC_NUMERIC_STANDARD()
7497 # define UNLOCK_LC_NUMERIC_STANDARD()
7498 # define WITH_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric, block) \
7499 STMT_START { block; } STMT_END
7500 # define WITH_LC_NUMERIC_SET_TO_NEEDED(block) \
7501 STMT_START { block; } STMT_END
7503 #endif /* !USE_LOCALE_NUMERIC */
7505 #ifdef USE_LOCALE_THREADS
7506 # define ENV_LOCK PERL_WRITE_LOCK(&PL_env_mutex)
7507 # define ENV_UNLOCK PERL_WRITE_UNLOCK(&PL_env_mutex)
7508 # define ENV_READ_LOCK PERL_READ_LOCK(&PL_env_mutex)
7509 # define ENV_READ_UNLOCK PERL_READ_UNLOCK(&PL_env_mutex)
7510 # define ENV_INIT PERL_RW_MUTEX_INIT(&PL_env_mutex)
7511 # define ENV_TERM PERL_RW_MUTEX_DESTROY(&PL_env_mutex)
7513 /* On platforms where the static buffer contained in getenv() is per-thread
7514 * rather than process-wide, another thread executing a getenv() at the same
7515 * time won't destroy ours before we have copied the result safely away and
7516 * unlocked the mutex. On such platforms (which is most), we can have many
7517 * readers of the environment at the same time. */
7518 # ifdef GETENV_PRESERVES_OTHER_THREAD
7519 # define GETENV_LOCK ENV_READ_LOCK
7520 # define GETENV_UNLOCK ENV_READ_UNLOCK
7522 /* If, on the other hand, another thread could zap our getenv() return, we
7523 * need to keep them from executing until we are done */
7524 # define GETENV_LOCK ENV_LOCK
7525 # define GETENV_UNLOCK ENV_UNLOCK
7528 # define ENV_LOCK NOOP
7529 # define ENV_UNLOCK NOOP
7530 # define ENV_READ_LOCK NOOP
7531 # define ENV_READ_UNLOCK NOOP
7532 # define ENV_INIT NOOP
7533 # define ENV_TERM NOOP
7534 # define GETENV_LOCK NOOP
7535 # define GETENV_UNLOCK NOOP
7538 #ifndef PERL_NO_INLINE_FUNCTIONS
7539 /* Static inline funcs that depend on includes and declarations above.
7540 Some of these reference functions in the perl object files, and some
7541 compilers aren't smart enough to eliminate unused static inline
7542 functions, so including this file in source code can cause link errors
7543 even if the source code uses none of the functions. Hence including these
7544 can be suppressed by setting PERL_NO_INLINE_FUNCTIONS. Doing this will
7545 (obviously) result in unworkable XS code, but allows simple probing code
7546 to continue to work, because it permits tests to include the perl headers
7547 for definitions without creating a link dependency on the perl library
7548 (which may not exist yet).
7553 # include "perlstatic.h"
7554 # include "inline.h"
7555 # include "sv_inline.h"
7561 /* Some critical sections need to lock both the locale and the environment.
7562 * XXX khw intends to change this to lock both mutexes, but that brings up
7563 * issues of potential deadlock, so should be done at the beginning of a
7564 * development cycle. So for now, it just locks the environment. Note that
7565 * many modern platforms are locale-thread-safe anyway, so locking the locale
7566 * mutex is a no-op anyway */
7567 #define ENV_LOCALE_LOCK ENV_LOCK
7568 #define ENV_LOCALE_UNLOCK ENV_UNLOCK
7570 /* And some critical sections care only that no one else is writing either the
7571 * locale nor the environment. XXX Again this is for the future. This can be
7572 * simulated with using COND_WAIT in thread.h */
7573 #define ENV_LOCALE_READ_LOCK ENV_LOCALE_LOCK
7574 #define ENV_LOCALE_READ_UNLOCK ENV_LOCALE_UNLOCK
7578 =for apidoc_section $numeric
7580 =for apidoc AmTR|NV|Strtod|NN const char * const s|NULLOK char ** e
7582 This is a synonym for L</my_strtod>.
7584 =for apidoc AmTR|NV|Strtol|NN const char * const s|NULLOK char ** e|int base
7586 Platform and configuration independent C<strtol>. This expands to the
7587 appropriate C<strotol>-like function based on the platform and F<Configure>
7588 options>. For example it could expand to C<strtoll> or C<strtoq> instead of
7591 =for apidoc AmTR|NV|Strtoul|NN const char * const s|NULLOK char ** e|int base
7593 Platform and configuration independent C<strtoul>. This expands to the
7594 appropriate C<strotoul>-like function based on the platform and F<Configure>
7595 options>. For example it could expand to C<strtoull> or C<strtouq> instead of
7602 #define Strtod my_strtod
7604 #if defined(HAS_STRTOD) \
7605 || defined(USE_QUADMATH) \
7606 || (defined(HAS_STRTOLD) && defined(HAS_LONG_DOUBLE) \
7607 && defined(USE_LONG_DOUBLE))
7608 # define Perl_strtod Strtod
7611 #if !defined(Strtol) && defined(USE_64_BIT_INT) && defined(IV_IS_QUAD) && \
7612 (QUADKIND == QUAD_IS_LONG_LONG || QUADKIND == QUAD_IS___INT64)
7614 # define strtoll __strtoll /* secret handshake */
7616 # if defined(WIN64) && defined(_MSC_VER)
7617 # define strtoll _strtoi64 /* secret handshake */
7619 # if !defined(Strtol) && defined(HAS_STRTOLL)
7620 # define Strtol strtoll
7622 # if !defined(Strtol) && defined(HAS_STRTOQ)
7623 # define Strtol strtoq
7625 /* is there atoq() anywhere? */
7627 #if !defined(Strtol) && defined(HAS_STRTOL)
7628 # define Strtol strtol
7631 /* It would be more fashionable to use Strtol() to define atol()
7632 * (as is done for Atoul(), see below) but for backward compatibility
7633 * we just assume atol(). */
7634 # if defined(USE_64_BIT_INT) && defined(IV_IS_QUAD) && defined(HAS_ATOLL) && \
7635 (QUADKIND == QUAD_IS_LONG_LONG || QUADKIND == QUAD_IS___INT64)
7637 # define atoll _atoi64 /* secret handshake */
7645 #if !defined(Strtoul) && defined(USE_64_BIT_INT) && defined(UV_IS_QUAD) && \
7646 (QUADKIND == QUAD_IS_LONG_LONG || QUADKIND == QUAD_IS___INT64)
7648 # define strtoull __strtoull /* secret handshake */
7650 # if defined(WIN64) && defined(_MSC_VER)
7651 # define strtoull _strtoui64 /* secret handshake */
7653 # if !defined(Strtoul) && defined(HAS_STRTOULL)
7654 # define Strtoul strtoull
7656 # if !defined(Strtoul) && defined(HAS_STRTOUQ)
7657 # define Strtoul strtouq
7659 /* is there atouq() anywhere? */
7661 #if !defined(Strtoul) && defined(HAS_STRTOUL)
7662 # define Strtoul strtoul
7664 #if !defined(Strtoul) && defined(HAS_STRTOL) /* Last resort. */
7665 # define Strtoul(s, e, b) strchr((s), '-') ? ULONG_MAX : (unsigned long)strtol((s), (e), (b))
7668 # define Atoul(s) Strtoul(s, NULL, 10)
7671 #define grok_bin(s,lp,fp,rp) \
7672 grok_bin_oct_hex(s, lp, fp, rp, 1, CC_BINDIGIT_, 'b')
7673 #define grok_oct(s,lp,fp,rp) \
7674 (*(fp) |= PERL_SCAN_DISALLOW_PREFIX, \
7675 grok_bin_oct_hex(s, lp, fp, rp, 3, CC_OCTDIGIT_, '\0'))
7676 #define grok_hex(s,lp,fp,rp) \
7677 grok_bin_oct_hex(s, lp, fp, rp, 4, CC_XDIGIT_, 'x')
7679 #ifndef PERL_SCRIPT_MODE
7680 #define PERL_SCRIPT_MODE "r"
7683 /* not used. Kept as a NOOP for backcompat */
7684 #define PERL_STACK_OVERFLOW_CHECK() NOOP
7687 * Some nonpreemptive operating systems find it convenient to
7688 * check for asynchronous conditions after each op execution.
7689 * Keep this check simple, or it may slow down execution
7694 # ifndef PERL_ASYNC_CHECK
7695 # define PERL_ASYNC_CHECK() if (UNLIKELY(PL_sig_pending)) PL_signalhook(aTHX)
7699 #ifndef PERL_ASYNC_CHECK
7700 # define PERL_ASYNC_CHECK() NOOP
7704 * On some operating systems, a memory allocation may succeed,
7705 * but put the process too close to the system's comfort limit.
7706 * In this case, PERL_ALLOC_CHECK frees the pointer and sets
7709 #ifndef PERL_ALLOC_CHECK
7710 #define PERL_ALLOC_CHECK(p) NOOP
7714 # include <sys/ipc.h>
7715 # include <sys/sem.h>
7716 # ifndef HAS_UNION_SEMUN /* Provide the union semun. */
7719 struct semid_ds *buf;
7720 unsigned short *array;
7723 # ifdef USE_SEMCTL_SEMUN
7724 # ifdef IRIX32_SEMUN_BROKEN_BY_GCC
7725 union gccbug_semun {
7727 struct semid_ds *buf;
7728 unsigned short *array;
7731 # define semun gccbug_semun
7733 # define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun)
7734 # elif defined(USE_SEMCTL_SEMID_DS)
7735 # ifdef EXTRA_F_IN_SEMUN_BUF
7736 # define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun.buff)
7738 # define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun.buf)
7744 * Boilerplate macros for initializing and accessing interpreter-local
7745 * data from C. All statics in extensions should be reworked to use
7746 * this, if you want to make the extension thread-safe. See
7747 * ext/XS/APItest/APItest.xs for an example of the use of these macros,
7748 * and perlxs.pod for more.
7750 * Code that uses these macros is responsible for the following:
7751 * 1. #define MY_CXT_KEY to a unique string, e.g.
7752 * "DynaLoader::_guts" XS_VERSION
7753 * XXX in the current implementation, this string is ignored.
7754 * 2. Declare a typedef named my_cxt_t that is a structure that contains
7755 * all the data that needs to be interpreter-local.
7756 * 3. Use the START_MY_CXT macro after the declaration of my_cxt_t.
7757 * 4. Use the MY_CXT_INIT macro such that it is called exactly once
7758 * (typically put in the BOOT: section).
7759 * 5. Use the members of the my_cxt_t structure everywhere as
7761 * 6. Use the dMY_CXT macro (a declaration) in all the functions that
7765 #if defined(MULTIPLICITY)
7767 /* START_MY_CXT must appear in all extensions that define a my_cxt_t structure,
7768 * right after the definition (i.e. at file scope). The non-threads
7769 * case below uses it to declare the data as static. */
7770 # define START_MY_CXT static int my_cxt_index = -1;
7771 # define MY_CXT_INDEX my_cxt_index
7772 # define MY_CXT_INIT_ARG &my_cxt_index
7774 /* Creates and zeroes the per-interpreter data.
7775 * (We allocate my_cxtp in a Perl SV so that it will be released when
7776 * the interpreter goes away.) */
7777 # define MY_CXT_INIT \
7778 my_cxt_t *my_cxtp = \
7779 (my_cxt_t*)Perl_my_cxt_init(aTHX_ MY_CXT_INIT_ARG, sizeof(my_cxt_t)); \
7780 PERL_UNUSED_VAR(my_cxtp)
7781 # define MY_CXT_INIT_INTERP(my_perl) \
7782 my_cxt_t *my_cxtp = \
7783 (my_cxt_t*)Perl_my_cxt_init(my_perl, MY_CXT_INIT_ARG, sizeof(my_cxt_t)); \
7784 PERL_UNUSED_VAR(my_cxtp)
7786 /* This declaration should be used within all functions that use the
7787 * interpreter-local data. */
7789 my_cxt_t *my_cxtp = (my_cxt_t *)PL_my_cxt_list[MY_CXT_INDEX]
7790 # define dMY_CXT_INTERP(my_perl) \
7791 my_cxt_t *my_cxtp = (my_cxt_t *)(my_perl)->Imy_cxt_list[MY_CXT_INDEX]
7793 /* Clones the per-interpreter data. */
7794 # define MY_CXT_CLONE \
7795 my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1));\
7796 void * old_my_cxtp = PL_my_cxt_list[MY_CXT_INDEX]; \
7797 PL_my_cxt_list[MY_CXT_INDEX] = my_cxtp; \
7798 Copy(old_my_cxtp, my_cxtp, 1, my_cxt_t);
7802 /* This macro must be used to access members of the my_cxt_t structure.
7803 * e.g. MY_CXT.some_data */
7804 # define MY_CXT (*my_cxtp)
7806 /* Judicious use of these macros can reduce the number of times dMY_CXT
7807 * is used. Use is similar to pTHX, aTHX etc. */
7808 # define pMY_CXT my_cxt_t *my_cxtp
7809 # define pMY_CXT_ pMY_CXT,
7810 # define _pMY_CXT ,pMY_CXT
7811 # define aMY_CXT my_cxtp
7812 # define aMY_CXT_ aMY_CXT,
7813 # define _aMY_CXT ,aMY_CXT
7815 #else /* MULTIPLICITY */
7816 # define START_MY_CXT static my_cxt_t my_cxt;
7817 # define dMY_CXT dNOOP
7818 # define dMY_CXT_INTERP(my_perl) dNOOP
7819 # define MY_CXT_INIT NOOP
7820 # define MY_CXT_CLONE NOOP
7821 # define MY_CXT my_cxt
7823 # define pMY_CXT void
7830 #endif /* !defined(MULTIPLICITY) */
7841 # undef FD_CLOEXEC /* a lie in AmigaOS */
7845 # include <sys/file.h>
7848 #if defined(HAS_FLOCK) && !defined(HAS_FLOCK_PROTO)
7849 EXTERN_C int flock(int fd, int op);
7853 /* Assume UNIX defaults */
7854 # define O_RDONLY 0000
7855 # define O_WRONLY 0001
7856 # define O_RDWR 0002
7857 # define O_CREAT 0100
7868 #if O_TEXT != O_BINARY
7869 /* If you have different O_TEXT and O_BINARY and you are a CRLF shop,
7870 * that is, you are somehow DOSish. */
7871 # if defined(__HAIKU__) || defined(__VOS__) || defined(__CYGWIN__)
7872 /* Haiku has O_TEXT != O_BINARY but O_TEXT and O_BINARY have no effect;
7873 * Haiku is always UNIXoid (LF), not DOSish (CRLF). */
7874 /* VOS has O_TEXT != O_BINARY, and they have effect,
7875 * but VOS always uses LF, never CRLF. */
7876 /* If you have O_TEXT different from your O_BINARY but you still are
7877 * not a CRLF shop. */
7878 # undef PERLIO_USING_CRLF
7880 /* If you really are DOSish. */
7881 # define PERLIO_USING_CRLF 1
7886 # include <libutil.h> /* setproctitle() in some FreeBSDs */
7889 #ifndef EXEC_ARGV_CAST
7890 #define EXEC_ARGV_CAST(x) (char **)x
7893 #define IS_NUMBER_IN_UV 0x01 /* number within UV range (maybe not
7894 int). value returned in pointed-
7896 #define IS_NUMBER_GREATER_THAN_UV_MAX 0x02 /* pointed to UV undefined */
7897 #define IS_NUMBER_NOT_INT 0x04 /* saw . or E notation or infnan */
7898 #define IS_NUMBER_NEG 0x08 /* leading minus sign */
7899 #define IS_NUMBER_INFINITY 0x10 /* this is big */
7900 #define IS_NUMBER_NAN 0x20 /* this is not */
7901 #define IS_NUMBER_TRAILING 0x40 /* number has trailing trash */
7904 =for apidoc_section $numeric
7906 =for apidoc AmdR|bool|GROK_NUMERIC_RADIX|NN const char **sp|NN const char *send
7908 A synonym for L</grok_numeric_radix>
7912 #define GROK_NUMERIC_RADIX(sp, send) grok_numeric_radix(sp, send)
7914 /* Number scan flags. All are used for input, the ones used for output are so
7916 #define PERL_SCAN_ALLOW_UNDERSCORES 0x01 /* grok_??? accept _ in numbers */
7917 #define PERL_SCAN_DISALLOW_PREFIX 0x02 /* grok_??? reject 0x in hex etc */
7919 /* grok_??? input: ignored; output: found overflow */
7920 #define PERL_SCAN_GREATER_THAN_UV_MAX 0x04
7922 /* grok_??? don't warn about illegal digits. To preserve total backcompat,
7923 * this isn't set on output if one is found. Instead, see
7924 * PERL_SCAN_NOTIFY_ILLDIGIT. */
7925 #define PERL_SCAN_SILENT_ILLDIGIT 0x08
7927 #define PERL_SCAN_TRAILING 0x10 /* grok_number_flags() allow trailing
7928 and set IS_NUMBER_TRAILING */
7930 /* These are considered experimental, so not exposed publicly */
7931 #if defined(PERL_CORE) || defined(PERL_EXT)
7932 /* grok_??? don't warn about very large numbers which are <= UV_MAX;
7933 * output: found such a number */
7934 # define PERL_SCAN_SILENT_NON_PORTABLE 0x20
7936 /* If this is set on input, and no illegal digit is found, it will be cleared
7937 * on output; otherwise unchanged */
7938 # define PERL_SCAN_NOTIFY_ILLDIGIT 0x40
7940 /* Don't warn on overflow; output flag still set */
7941 # define PERL_SCAN_SILENT_OVERFLOW 0x80
7943 /* Forbid a leading underscore, which the other one doesn't */
7944 # define PERL_SCAN_ALLOW_MEDIAL_UNDERSCORES (0x100|PERL_SCAN_ALLOW_UNDERSCORES)
7948 /* to let user control profiling */
7949 #ifdef PERL_GPROF_CONTROL
7950 extern void moncontrol(int);
7951 #define PERL_GPROF_MONCONTROL(x) moncontrol(x)
7953 #define PERL_GPROF_MONCONTROL(x)
7956 /* ISO 6429 NEL - C1 control NExt Line */
7957 /* See https://www.unicode.org/unicode/reports/tr13/ */
7958 #define NEXT_LINE_CHAR NEXT_LINE_NATIVE
7960 #ifndef PIPESOCK_MODE
7961 # define PIPESOCK_MODE
7964 #ifndef SOCKET_OPEN_MODE
7965 # define SOCKET_OPEN_MODE PIPESOCK_MODE
7968 #ifndef PIPE_OPEN_MODE
7969 # define PIPE_OPEN_MODE PIPESOCK_MODE
7972 #define PERL_MAGIC_UTF8_CACHESIZE 2
7976 #define PERL_UNICODE_STDIN_FLAG 0x0001
7977 #define PERL_UNICODE_STDOUT_FLAG 0x0002
7978 #define PERL_UNICODE_STDERR_FLAG 0x0004
7979 #define PERL_UNICODE_IN_FLAG 0x0008
7980 #define PERL_UNICODE_OUT_FLAG 0x0010
7981 #define PERL_UNICODE_ARGV_FLAG 0x0020
7982 #define PERL_UNICODE_LOCALE_FLAG 0x0040
7983 #define PERL_UNICODE_WIDESYSCALLS_FLAG 0x0080 /* for Sarathy */
7984 #define PERL_UNICODE_UTF8CACHEASSERT_FLAG 0x0100
7986 #define PERL_UNICODE_STD_FLAG \
7987 (PERL_UNICODE_STDIN_FLAG | \
7988 PERL_UNICODE_STDOUT_FLAG | \
7989 PERL_UNICODE_STDERR_FLAG)
7991 #define PERL_UNICODE_INOUT_FLAG \
7992 (PERL_UNICODE_IN_FLAG | \
7993 PERL_UNICODE_OUT_FLAG)
7995 #define PERL_UNICODE_DEFAULT_FLAGS \
7996 (PERL_UNICODE_STD_FLAG | \
7997 PERL_UNICODE_INOUT_FLAG | \
7998 PERL_UNICODE_LOCALE_FLAG)
8000 #define PERL_UNICODE_ALL_FLAGS 0x01ff
8002 #define PERL_UNICODE_STDIN 'I'
8003 #define PERL_UNICODE_STDOUT 'O'
8004 #define PERL_UNICODE_STDERR 'E'
8005 #define PERL_UNICODE_STD 'S'
8006 #define PERL_UNICODE_IN 'i'
8007 #define PERL_UNICODE_OUT 'o'
8008 #define PERL_UNICODE_INOUT 'D'
8009 #define PERL_UNICODE_ARGV 'A'
8010 #define PERL_UNICODE_LOCALE 'L'
8011 #define PERL_UNICODE_WIDESYSCALLS 'W'
8012 #define PERL_UNICODE_UTF8CACHEASSERT 'a'
8017 =for apidoc_section $signals
8018 =for apidoc Amn|U32|PERL_SIGNALS_UNSAFE_FLAG
8019 If this bit in C<PL_signals> is set, the system is uing the pre-Perl 5.8
8020 unsafe signals. See L<perlrun/PERL_SIGNALS> and L<perlipc/Deferred Signals
8025 #define PERL_SIGNALS_UNSAFE_FLAG 0x0001
8028 =for apidoc_section $numeric
8030 =for apidoc Am|int|PERL_ABS|int x
8032 Typeless C<abs> or C<fabs>, I<etc>. (The usage below indicates it is for
8033 integers, but it works for any type.) Use instead of these, since the C
8034 library ones force their argument to be what it is expecting, potentially
8035 leading to disaster. But also beware that this evaluates its argument twice,
8041 #define PERL_ABS(x) ((x) < 0 ? -(x) : (x))
8043 #if defined(__DECC) && defined(__osf__)
8044 #pragma message disable (mainparm) /* Perl uses the envp in main(). */
8047 #define do_open(g, n, l, a, rm, rp, sf) \
8048 do_openn(g, n, l, a, rm, rp, sf, (SV **) NULL, 0)
8049 #ifdef PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION
8050 # define do_exec(cmd) do_exec3(cmd,0,0)
8053 # define do_aexec Perl_do_aexec
8055 # define do_aexec(really, mark,sp) do_aexec5(really, mark, sp, 0, 0)
8060 =for apidoc_section $utility
8062 =for apidoc Am|bool|IS_SAFE_SYSCALL|NN const char *pv|STRLEN len|NN const char *what|NN const char *op_name
8064 Same as L</is_safe_syscall>.
8068 Allows one ending \0
8070 #define IS_SAFE_SYSCALL(p, len, what, op_name) (Perl_is_safe_syscall(aTHX_ (p), (len), (what), (op_name)))
8072 #define IS_SAFE_PATHNAME(p, len, op_name) IS_SAFE_SYSCALL((p), (len), "pathname", (op_name))
8074 #if defined(OEMVS) || defined(__amigaos4__)
8075 #define NO_ENV_ARRAY_IN_MAIN
8078 /* These are used by Perl_pv_escape() and Perl_pv_pretty()
8079 * are here so that they are available throughout the core
8080 * NOTE that even though some are for _escape and some for _pretty
8081 * there must not be any clashes as the flags from _pretty are
8082 * passed straight through to _escape.
8085 #define PERL_PV_ESCAPE_QUOTE 0x000001
8086 #define PERL_PV_PRETTY_QUOTE PERL_PV_ESCAPE_QUOTE
8088 #define PERL_PV_PRETTY_ELLIPSES 0x000002
8089 #define PERL_PV_PRETTY_LTGT 0x000004
8090 #define PERL_PV_PRETTY_EXACTSIZE 0x000008
8092 #define PERL_PV_ESCAPE_UNI 0x000100
8093 #define PERL_PV_ESCAPE_UNI_DETECT 0x000200
8094 #define PERL_PV_ESCAPE_NONASCII 0x000400
8095 #define PERL_PV_ESCAPE_FIRSTCHAR 0x000800
8097 #define PERL_PV_ESCAPE_ALL 0x001000
8098 #define PERL_PV_ESCAPE_NOBACKSLASH 0x002000
8099 #define PERL_PV_ESCAPE_NOCLEAR 0x004000
8100 #define PERL_PV_PRETTY_NOCLEAR PERL_PV_ESCAPE_NOCLEAR
8101 #define PERL_PV_ESCAPE_RE 0x008000
8103 /* Escape PV with hex, except leave NULs as octal: */
8104 #define PERL_PV_ESCAPE_DWIM 0x010000
8106 /* Escape PV with all hex, including NUL. */
8107 #define PERL_PV_ESCAPE_DWIM_ALL_HEX 0x020000
8110 /* used by pv_display in dump.c*/
8111 #define PERL_PV_PRETTY_DUMP PERL_PV_PRETTY_ELLIPSES|PERL_PV_PRETTY_QUOTE
8112 #define PERL_PV_PRETTY_REGPROP PERL_PV_PRETTY_ELLIPSES|PERL_PV_PRETTY_LTGT|PERL_PV_ESCAPE_RE|PERL_PV_ESCAPE_NONASCII
8114 #if DOUBLEKIND == DOUBLE_IS_VAX_F_FLOAT || \
8115 DOUBLEKIND == DOUBLE_IS_VAX_D_FLOAT || \
8116 DOUBLEKIND == DOUBLE_IS_VAX_G_FLOAT
8117 # define DOUBLE_IS_VAX_FLOAT
8119 # define DOUBLE_IS_IEEE_FORMAT
8122 #if DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_LITTLE_ENDIAN || \
8123 DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_LITTLE_ENDIAN || \
8124 DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN
8125 # define DOUBLE_LITTLE_ENDIAN
8128 #if DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_BIG_ENDIAN || \
8129 DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_BIG_ENDIAN || \
8130 DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN
8131 # define DOUBLE_BIG_ENDIAN
8134 #if DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_LE_BE || \
8135 DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_BE_LE
8136 # define DOUBLE_MIX_ENDIAN
8139 /* The VAX fp formats are neither consistently little-endian nor
8140 * big-endian, and neither are they really IEEE-mixed endian like
8141 * the mixed-endian ARM IEEE formats (with swapped bytes).
8142 * Ultimately, the VAX format came from the PDP-11.
8144 * The ordering of the parts in VAX floats is quite vexing.
8145 * In the below the fraction_n are the mantissa bits.
8147 * The fraction_1 is the most significant (numbering as by DEC/Digital),
8148 * while the rightmost bit in each fraction is the least significant:
8149 * in other words, big-endian bit order within the fractions.
8151 * The fraction segments themselves would be big-endianly, except that
8152 * within 32 bit segments the less significant half comes first, the more
8153 * significant after, except that in the format H (used for long doubles)
8154 * the first fraction segment is alone, because the exponent is wider.
8155 * This means for example that both the most and the least significant
8156 * bits can be in the middle of the floats, not at either end.
8159 * http://nssdc.gsfc.nasa.gov/nssdc/formats/VAXFloatingPoint.htm
8160 * http://www.quadibloc.com/comp/cp0201.htm
8161 * http://h71000.www7.hp.com/doc/82final/6443/6443pro_028.html
8162 * (somebody at HP should be fired for the URLs)
8164 * F fraction_2:16 sign:1 exp:8 fraction_1:7
8165 * (exponent bias 128, hidden first one-bit)
8167 * D fraction_2:16 sign:1 exp:8 fraction_1:7
8168 * fraction_4:16 fraction_3:16
8169 * (exponent bias 128, hidden first one-bit)
8171 * G fraction_2:16 sign:1 exp:11 fraction_1:4
8172 * fraction_4:16 fraction_3:16
8173 * (exponent bias 1024, hidden first one-bit)
8175 * H fraction_1:16 sign:1 exp:15
8176 * fraction_3:16 fraction_2:16
8177 * fraction_5:16 fraction_4:16
8178 * fraction_7:16 fraction_6:16
8179 * (exponent bias 16384, hidden first one-bit)
8180 * (available only on VAX, and only on Fortran?)
8182 * The formats S, T and X are available on the Alpha (and Itanium,
8183 * also known as I64/IA64) and are equivalent with the IEEE-754 formats
8184 * binary32, binary64, and binary128 (commonly: float, double, long double).
8186 * S sign:1 exp:8 mantissa:23
8187 * (exponent bias 127, hidden first one-bit)
8189 * T sign:1 exp:11 mantissa:52
8190 * (exponent bias 1022, hidden first one-bit)
8192 * X sign:1 exp:15 mantissa:112
8193 * (exponent bias 16382, hidden first one-bit)
8197 #ifdef DOUBLE_IS_VAX_FLOAT
8198 # define DOUBLE_VAX_ENDIAN
8201 #ifdef DOUBLE_IS_IEEE_FORMAT
8202 /* All the basic IEEE formats have the implicit bit,
8203 * except for the x86 80-bit extended formats, which will undef this.
8204 * Also note that the IEEE 754 subnormals (formerly known as denormals)
8205 * do not have the implicit bit of one. */
8206 # define NV_IMPLICIT_BIT
8209 #if defined(LONG_DOUBLEKIND) && LONG_DOUBLEKIND != LONG_DOUBLE_IS_DOUBLE
8211 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN || \
8212 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN || \
8213 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE
8214 # define LONGDOUBLE_LITTLE_ENDIAN
8217 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN || \
8218 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN || \
8219 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE
8220 # define LONGDOUBLE_BIG_ENDIAN
8223 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE || \
8224 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE
8225 # define LONGDOUBLE_MIX_ENDIAN
8228 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN || \
8229 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN
8230 # define LONGDOUBLE_X86_80_BIT
8231 # ifdef USE_LONG_DOUBLE
8232 # undef NV_IMPLICIT_BIT
8233 # define NV_X86_80_BIT
8237 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE || \
8238 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE || \
8239 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE || \
8240 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE
8241 # define LONGDOUBLE_DOUBLEDOUBLE
8244 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_VAX_H_FLOAT
8245 # define LONGDOUBLE_VAX_ENDIAN
8248 #endif /* LONG_DOUBLEKIND */
8250 #ifdef USE_QUADMATH /* assume quadmath endianness == native double endianness */
8251 # if defined(DOUBLE_LITTLE_ENDIAN)
8252 # define NV_LITTLE_ENDIAN
8253 # elif defined(DOUBLE_BIG_ENDIAN)
8254 # define NV_BIG_ENDIAN
8255 # elif defined(DOUBLE_MIX_ENDIAN) /* stretch */
8256 # define NV_MIX_ENDIAN
8258 #elif NVSIZE == DOUBLESIZE
8259 # ifdef DOUBLE_LITTLE_ENDIAN
8260 # define NV_LITTLE_ENDIAN
8262 # ifdef DOUBLE_BIG_ENDIAN
8263 # define NV_BIG_ENDIAN
8265 # ifdef DOUBLE_MIX_ENDIAN
8266 # define NV_MIX_ENDIAN
8268 # ifdef DOUBLE_VAX_ENDIAN
8269 # define NV_VAX_ENDIAN
8271 #elif NVSIZE == LONG_DOUBLESIZE
8272 # ifdef LONGDOUBLE_LITTLE_ENDIAN
8273 # define NV_LITTLE_ENDIAN
8275 # ifdef LONGDOUBLE_BIG_ENDIAN
8276 # define NV_BIG_ENDIAN
8278 # ifdef LONGDOUBLE_MIX_ENDIAN
8279 # define NV_MIX_ENDIAN
8281 # ifdef LONGDOUBLE_VAX_ENDIAN
8282 # define NV_VAX_ENDIAN
8286 /* We have somehow managed not to define the denormal/subnormal
8289 * This may happen if the compiler doesn't expose the C99 math like
8290 * the fpclassify() without some special switches. Perl tries to
8291 * stay C89, so for example -std=c99 is not an option.
8293 * The Perl_isinf() and Perl_isnan() should have been defined even if
8294 * the C99 isinf() and isnan() are unavailable, and the NV_MIN becomes
8295 * from the C89 DBL_MIN or moral equivalent. */
8296 #if !defined(Perl_fp_class_denorm) && defined(Perl_isinf) && defined(Perl_isnan) && defined(NV_MIN)
8297 # define Perl_fp_class_denorm(x) ((x) != 0.0 && !Perl_isinf(x) && !Perl_isnan(x) && PERL_ABS(x) < NV_MIN)
8300 /* This is not a great fallback: subnormals tests will fail,
8301 * but at least Perl will link and 99.999% of tests will work. */
8302 #if !defined(Perl_fp_class_denorm)
8303 # define Perl_fp_class_denorm(x) FALSE
8306 #ifdef DOUBLE_IS_IEEE_FORMAT
8307 # define DOUBLE_HAS_INF
8308 # define DOUBLE_HAS_NAN
8311 #ifdef DOUBLE_HAS_NAN
8317 /* PL_inf and PL_nan initialization.
8319 * For inf and nan initialization the ultimate fallback is dividing
8320 * one or zero by zero: however, some compilers will warn or even fail
8321 * on divide-by-zero, but hopefully something earlier will work.
8323 * If you are thinking of using HUGE_VAL for infinity, or using
8324 * <math.h> functions to generate NV_INF (e.g. exp(1e9), log(-1.0)),
8325 * stop. Neither will work portably: HUGE_VAL can be just DBL_MAX,
8326 * and the math functions might be just generating DBL_MAX, or even zero.
8328 * Also, do NOT try doing NV_NAN based on NV_INF and trying (NV_INF-NV_INF).
8329 * Though logically correct, some compilers (like Visual C 2003)
8330 * falsely misoptimize that to zero (x-x is always zero, right?)
8332 * Finally, note that not all floating point formats define Inf (or NaN).
8333 * For the infinity a large number may be used instead. Operations that
8334 * under the IEEE floating point would return Inf or NaN may return
8335 * either large numbers (positive or negative), or they may cause
8336 * a floating point exception or some other fault.
8339 /* The quadmath literals are anon structs which -Wc++-compat doesn't like. */
8340 # ifndef USE_CPLUSPLUS
8341 GCC_DIAG_IGNORE_DECL(-Wc++-compat);
8344 # ifdef USE_QUADMATH
8345 /* Cannot use HUGE_VALQ for PL_inf because not a compile-time
8347 INFNAN_NV_U8_DECL PL_inf = { 1.0Q/0.0Q };
8348 # elif NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLINFBYTES)
8349 INFNAN_U8_NV_DECL PL_inf = { { LONGDBLINFBYTES } };
8350 # elif NVSIZE == DOUBLESIZE && defined(DOUBLEINFBYTES)
8351 INFNAN_U8_NV_DECL PL_inf = { { DOUBLEINFBYTES } };
8353 # if NVSIZE == LONG_DOUBLESIZE && defined(USE_LONG_DOUBLE)
8354 # if defined(LDBL_INFINITY)
8355 INFNAN_NV_U8_DECL PL_inf = { LDBL_INFINITY };
8356 # elif defined(LDBL_INF)
8357 INFNAN_NV_U8_DECL PL_inf = { LDBL_INF };
8358 # elif defined(INFINITY)
8359 INFNAN_NV_U8_DECL PL_inf = { (NV)INFINITY };
8361 INFNAN_NV_U8_DECL PL_inf = { (NV)INF };
8363 INFNAN_NV_U8_DECL PL_inf = { 1.0L/0.0L }; /* keep last */
8366 # if defined(DBL_INFINITY)
8367 INFNAN_NV_U8_DECL PL_inf = { DBL_INFINITY };
8368 # elif defined(DBL_INF)
8369 INFNAN_NV_U8_DECL PL_inf = { DBL_INF };
8370 # elif defined(INFINITY) /* C99 */
8371 INFNAN_NV_U8_DECL PL_inf = { (NV)INFINITY };
8373 INFNAN_NV_U8_DECL PL_inf = { (NV)INF };
8375 INFNAN_NV_U8_DECL PL_inf = { 1.0/0.0 }; /* keep last */
8380 # ifdef USE_QUADMATH
8381 /* Cannot use nanq("0") for PL_nan because not a compile-time
8383 INFNAN_NV_U8_DECL PL_nan = { 0.0Q/0.0Q };
8384 # elif NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLNANBYTES)
8385 INFNAN_U8_NV_DECL PL_nan = { { LONGDBLNANBYTES } };
8386 # elif NVSIZE == DOUBLESIZE && defined(DOUBLENANBYTES)
8387 INFNAN_U8_NV_DECL PL_nan = { { DOUBLENANBYTES } };
8389 # if NVSIZE == LONG_DOUBLESIZE && defined(USE_LONG_DOUBLE)
8390 # if defined(LDBL_NAN)
8391 INFNAN_NV_U8_DECL PL_nan = { LDBL_NAN };
8392 # elif defined(LDBL_QNAN)
8393 INFNAN_NV_U8_DECL PL_nan = { LDBL_QNAN };
8395 INFNAN_NV_U8_DECL PL_nan = { (NV)NAN };
8397 INFNAN_NV_U8_DECL PL_nan = { 0.0L/0.0L }; /* keep last */
8400 # if defined(DBL_NAN)
8401 INFNAN_NV_U8_DECL PL_nan = { DBL_NAN };
8402 # elif defined(DBL_QNAN)
8403 INFNAN_NV_U8_DECL PL_nan = { DBL_QNAN };
8404 # elif defined(NAN) /* C99 */
8405 INFNAN_NV_U8_DECL PL_nan = { (NV)NAN };
8407 INFNAN_NV_U8_DECL PL_nan = { 0.0/0.0 }; /* keep last */
8412 # ifndef USE_CPLUSPLUS
8413 GCC_DIAG_RESTORE_DECL;
8418 /* The declarations here need to match the initializations done above,
8419 since a mismatch across compilation units causes undefined
8420 behavior. It also prevents warnings from LTO builds.
8422 # if !defined(USE_QUADMATH) && \
8423 (NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLINFBYTES) || \
8424 NVSIZE == DOUBLESIZE && defined(DOUBLEINFBYTES))
8425 INFNAN_U8_NV_DECL PL_inf;
8427 INFNAN_NV_U8_DECL PL_inf;
8430 # if !defined(USE_QUADMATH) && \
8431 (NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLNANBYTES) || \
8432 NVSIZE == DOUBLESIZE && defined(DOUBLENANBYTES))
8433 INFNAN_U8_NV_DECL PL_nan;
8435 INFNAN_NV_U8_DECL PL_nan;
8442 /* If you have not defined NV_INF/NV_NAN (like for example win32/win32.h),
8443 * we will define NV_INF/NV_NAN as the nv part of the global const
8444 * PL_inf/PL_nan. Note, however, that the preexisting NV_INF/NV_NAN
8445 * might not be a compile-time constant, in which case it cannot be
8446 * used to initialize PL_inf/PL_nan above. */
8448 # define NV_INF PL_inf.nv
8451 # define NV_NAN PL_nan.nv
8454 /* NaNs (not-a-numbers) can carry payload bits, in addition to
8455 * "nan-ness". Part of the payload is the quiet/signaling bit.
8456 * To back up a bit (harhar):
8458 * For IEEE 754 64-bit formats [1]:
8460 * s 000 (mantissa all-zero) zero
8461 * s 000 (mantissa non-zero) subnormals (denormals)
8462 * s 001 ... 7fe normals
8465 * For IEEE 754 128-bit formats:
8467 * s 0000 (mantissa all-zero) zero
8468 * s 0000 (mantissa non-zero) subnormals (denormals)
8469 * s 0001 ... 7ffe normals
8472 * [1] this looks like big-endian, but applies equally to little-endian.
8474 * s = Sign bit. Yes, zeros and nans can have negative sign,
8475 * the interpretation is application-specific.
8477 * q = Quietness bit, the interpretation is platform-specific.
8478 * Most platforms have the most significant bit being one
8479 * meaning quiet, but some (older mips, hppa) have the msb
8480 * being one meaning signaling. Note that the above means
8481 * that on most platforms there cannot be signaling nan with
8482 * zero payload because that is identical with infinity;
8483 * while conversely on older mips/hppa there cannot be a quiet nan
8484 * because that is identical with infinity.
8486 * Moreover, whether there is any behavioral difference
8487 * between quiet and signaling NaNs, depends on the platform.
8489 * x86 80-bit extended precision is different, the mantissa bits:
8491 * 63 62 61 30387+ pre-387 visual c
8492 * -------- ---- -------- --------
8493 * 0 0 0 invalid infinity
8494 * 0 0 1 invalid snan
8495 * 0 1 0 invalid snan
8496 * 0 1 1 invalid snan
8497 * 1 0 0 infinity snan 1.#INF
8498 * 1 0 1 snan 1.#SNAN
8499 * 1 1 0 qnan -1.#IND (x86 chooses this to negative)
8500 * 1 1 1 qnan 1.#QNAN
8502 * This means that in this format there are 61 bits available
8503 * for the nan payload.
8505 * Note that the 32-bit x86 ABI cannot do signaling nans: the x87
8506 * simply cannot preserve the bit. You can either use the 80-bit
8507 * extended precision (long double, -Duselongdouble), or use x86-64.
8509 * In all platforms, the payload bytes (and bits, some of them are
8510 * often in a partial byte) themselves can be either all zero (x86),
8511 * all one (sparc or mips), or a mixture: in IEEE 754 128-bit double
8512 * or in a double-double, the first half of the payload can follow the
8513 * native double, while in the second half the payload can be all
8514 * zeros. (Therefore the mask for payload bits is not necessarily
8515 * identical to bit complement of the NaN.) Another way of putting
8516 * this: the payload for the default NaN might not be zero.
8518 * For the x86 80-bit long doubles, the trailing bytes (the 80 bits
8519 * being 'packaged' in either 12 or 16 bytes) can be whatever random
8522 * Furthermore, the semantics of the sign bit on NaNs are platform-specific.
8523 * On normal floats, the sign bit being on means negative. But this may,
8524 * or may not, be reverted on NaNs: in other words, the default NaN might
8525 * have the sign bit on, and therefore look like negative if you look
8526 * at it at the bit level.
8528 * NaN payloads are not propagated even on copies, or in arithmetics.
8529 * They *might* be, according to some rules, on your particular
8530 * cpu/os/compiler/libraries, but no guarantees.
8532 * To summarize, on most platforms, and for 64-bit doubles
8533 * (using big-endian ordering here):
8535 * [7FF8000000000000..7FFFFFFFFFFFFFFF] quiet
8536 * [FFF8000000000000..FFFFFFFFFFFFFFFF] quiet
8537 * [7FF0000000000001..7FF7FFFFFFFFFFFF] signaling
8538 * [FFF0000000000001..FFF7FFFFFFFFFFFF] signaling
8540 * The C99 nan() is supposed to generate *quiet* NaNs.
8542 * Note the asymmetry:
8543 * The 7FF0000000000000 is positive infinity,
8544 * the FFF0000000000000 is negative infinity.
8547 /* NVMANTBITS is the number of _real_ mantissa bits in an NV.
8548 * For the standard IEEE 754 fp this number is usually one less that
8549 * *DBL_MANT_DIG because of the implicit (aka hidden) bit, which isn't
8550 * real. For the 80-bit extended precision formats (x86*), the number
8551 * of mantissa bits... depends. For normal floats, it's 64. But for
8552 * the inf/nan, it's different (zero for inf, 61 for nan).
8553 * NVMANTBITS works for normal floats. */
8555 /* We do not want to include the quiet/signaling bit. */
8556 #define NV_NAN_BITS (NVMANTBITS - 1)
8558 #if defined(USE_LONG_DOUBLE) && NVSIZE > DOUBLESIZE
8559 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN
8560 # define NV_NAN_QS_BYTE_OFFSET 13
8561 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN
8562 # define NV_NAN_QS_BYTE_OFFSET 2
8563 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN
8564 # define NV_NAN_QS_BYTE_OFFSET 7
8565 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN
8566 # define NV_NAN_QS_BYTE_OFFSET 2
8567 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE
8568 # define NV_NAN_QS_BYTE_OFFSET 13
8569 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE
8570 # define NV_NAN_QS_BYTE_OFFSET 1
8571 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE
8572 # define NV_NAN_QS_BYTE_OFFSET 9
8573 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE
8574 # define NV_NAN_QS_BYTE_OFFSET 6
8576 # error "Unexpected long double format"
8579 # ifdef USE_QUADMATH
8580 # ifdef NV_LITTLE_ENDIAN
8581 # define NV_NAN_QS_BYTE_OFFSET 13
8582 # elif defined(NV_BIG_ENDIAN)
8583 # define NV_NAN_QS_BYTE_OFFSET 2
8585 # error "Unexpected quadmath format"
8587 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_LITTLE_ENDIAN
8588 # define NV_NAN_QS_BYTE_OFFSET 2
8589 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_BIG_ENDIAN
8590 # define NV_NAN_QS_BYTE_OFFSET 1
8591 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_LITTLE_ENDIAN
8592 # define NV_NAN_QS_BYTE_OFFSET 6
8593 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_BIG_ENDIAN
8594 # define NV_NAN_QS_BYTE_OFFSET 1
8595 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN
8596 # define NV_NAN_QS_BYTE_OFFSET 13
8597 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN
8598 # define NV_NAN_QS_BYTE_OFFSET 2
8599 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_LE_BE
8600 # define NV_NAN_QS_BYTE_OFFSET 2 /* bytes 4 5 6 7 0 1 2 3 (MSB 7) */
8601 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_BE_LE
8602 # define NV_NAN_QS_BYTE_OFFSET 5 /* bytes 3 2 1 0 7 6 5 4 (MSB 7) */
8604 /* For example the VAX formats should never
8605 * get here because they do not have NaN. */
8606 # error "Unexpected double format"
8609 /* NV_NAN_QS_BYTE is the byte to test for the quiet/signaling */
8610 #define NV_NAN_QS_BYTE(nvp) (((U8*)(nvp))[NV_NAN_QS_BYTE_OFFSET])
8611 /* NV_NAN_QS_BIT is the bit to test in the NV_NAN_QS_BYTE_OFFSET
8612 * for the quiet/signaling */
8613 #if defined(USE_LONG_DOUBLE) && \
8614 (LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN || \
8615 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN)
8616 # define NV_NAN_QS_BIT_SHIFT 6 /* 0x40 */
8617 #elif defined(USE_LONG_DOUBLE) && \
8618 (LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE || \
8619 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE || \
8620 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE || \
8621 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE)
8622 # define NV_NAN_QS_BIT_SHIFT 3 /* 0x08, but not via NV_NAN_BITS */
8624 # define NV_NAN_QS_BIT_SHIFT ((NV_NAN_BITS) % 8) /* usually 3, or 0x08 */
8626 #define NV_NAN_QS_BIT (1 << (NV_NAN_QS_BIT_SHIFT))
8627 /* NV_NAN_QS_BIT_OFFSET is the bit offset from the beginning of a NV
8628 * (bytes ordered big-endianly) for the quiet/signaling bit
8629 * for the quiet/signaling */
8630 #define NV_NAN_QS_BIT_OFFSET \
8631 (8 * (NV_NAN_QS_BYTE_OFFSET) + (NV_NAN_QS_BIT_SHIFT))
8632 /* NV_NAN_QS_QUIET (always defined) is true if the NV_NAN_QS_QS_BIT being
8633 * on indicates quiet NaN. NV_NAN_QS_SIGNALING (also always defined)
8634 * is true if the NV_NAN_QS_BIT being on indicates signaling NaN. */
8635 #define NV_NAN_QS_QUIET \
8636 ((NV_NAN_QS_BYTE(PL_nan.u8) & NV_NAN_QS_BIT) == NV_NAN_QS_BIT)
8637 #define NV_NAN_QS_SIGNALING (!(NV_NAN_QS_QUIET))
8638 #define NV_NAN_QS_TEST(nvp) (NV_NAN_QS_BYTE(nvp) & NV_NAN_QS_BIT)
8639 /* NV_NAN_IS_QUIET() returns true if the NV behind nvp is a NaN,
8640 * whether it is a quiet NaN, NV_NAN_IS_SIGNALING() if a signaling NaN.
8641 * Note however that these do not check whether the nvp is a NaN. */
8642 #define NV_NAN_IS_QUIET(nvp) \
8643 (NV_NAN_QS_TEST(nvp) == (NV_NAN_QS_QUIET ? NV_NAN_QS_BIT : 0))
8644 #define NV_NAN_IS_SIGNALING(nvp) \
8645 (NV_NAN_QS_TEST(nvp) == (NV_NAN_QS_QUIET ? 0 : NV_NAN_QS_BIT))
8646 #define NV_NAN_SET_QUIET(nvp) \
8647 (NV_NAN_QS_QUIET ? \
8648 (NV_NAN_QS_BYTE(nvp) |= NV_NAN_QS_BIT) : \
8649 (NV_NAN_QS_BYTE(nvp) &= ~NV_NAN_QS_BIT))
8650 #define NV_NAN_SET_SIGNALING(nvp) \
8651 (NV_NAN_QS_QUIET ? \
8652 (NV_NAN_QS_BYTE(nvp) &= ~NV_NAN_QS_BIT) : \
8653 (NV_NAN_QS_BYTE(nvp) |= NV_NAN_QS_BIT))
8654 #define NV_NAN_QS_XOR(nvp) (NV_NAN_QS_BYTE(nvp) ^= NV_NAN_QS_BIT)
8656 /* NV_NAN_PAYLOAD_MASK: masking the nan payload bits.
8658 * NV_NAN_PAYLOAD_PERM: permuting the nan payload bytes.
8659 * 0xFF means "don't go here".*/
8661 /* Shorthands to avoid typoses. */
8662 #define NV_NAN_PAYLOAD_MASK_SKIP_EIGHT \
8663 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0
8664 #define NV_NAN_PAYLOAD_PERM_SKIP_EIGHT \
8665 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
8666 #define NV_NAN_PAYLOAD_PERM_0_TO_7 \
8667 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7
8668 #define NV_NAN_PAYLOAD_PERM_7_TO_0 \
8669 0x7, 0x6, 0x5, 0x4, 0x3, 0x2, 0x1, 0x0
8670 #define NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE \
8671 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
8672 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f, 0x00, 0x00
8673 #define NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE \
8674 NV_NAN_PAYLOAD_PERM_0_TO_7, \
8675 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xFF, 0xFF
8676 #define NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE \
8677 0x00, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, \
8678 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
8679 #define NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE \
8680 0xFF, 0xFF, 0xd, 0xc, 0xb, 0xa, 0x9, 0x8, \
8681 NV_NAN_PAYLOAD_PERM_7_TO_0
8682 #define NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE \
8683 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x00
8684 #define NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE \
8685 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0xFF
8686 #define NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE \
8687 0x00, 0x07, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
8688 #define NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE \
8689 0xFF, 0x6, 0x5, 0x4, 0x3, 0x2, 0x1, 0x0
8691 #if defined(USE_LONG_DOUBLE) && NVSIZE > DOUBLESIZE
8692 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN
8693 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE
8694 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE
8695 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN
8696 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE
8697 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE
8698 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN
8699 # if LONG_DOUBLESIZE == 10
8700 # define NV_NAN_PAYLOAD_MASK \
8701 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, \
8703 # define NV_NAN_PAYLOAD_PERM \
8704 NV_NAN_PAYLOAD_PERM_0_TO_7, 0xFF, 0xFF
8705 # elif LONG_DOUBLESIZE == 12
8706 # define NV_NAN_PAYLOAD_MASK \
8707 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, \
8708 0x00, 0x00, 0x00, 0x00
8709 # define NV_NAN_PAYLOAD_PERM \
8710 NV_NAN_PAYLOAD_PERM_0_TO_7, 0xFF, 0xFF, 0xFF, 0xFF
8711 # elif LONG_DOUBLESIZE == 16
8712 # define NV_NAN_PAYLOAD_MASK \
8713 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, \
8714 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
8715 # define NV_NAN_PAYLOAD_PERM \
8716 NV_NAN_PAYLOAD_PERM_0_TO_7, \
8717 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
8719 # error "Unexpected x86 80-bit little-endian long double format"
8721 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN
8722 # if LONG_DOUBLESIZE == 10
8723 # define NV_NAN_PAYLOAD_MASK \
8724 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, \
8726 # define NV_NAN_PAYLOAD_PERM \
8727 NV_NAN_PAYLOAD_PERM_7_TO_0, 0xFF, 0xFF
8728 # elif LONG_DOUBLESIZE == 12
8729 # define NV_NAN_PAYLOAD_MASK \
8730 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, \
8731 0xff, 0xff, 0x00, 0x00
8732 # define NV_NAN_PAYLOAD_PERM \
8733 NV_NAN_PAYLOAD_PERM_7_TO_0, 0xFF, 0xFF, 0xFF, 0xFF
8734 # elif LONG_DOUBLESIZE == 16
8735 # define NV_NAN_PAYLOAD_MASK \
8736 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, \
8737 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
8738 # define NV_NAN_PAYLOAD_PERM \
8739 NV_NAN_PAYLOAD_PERM_7_TO_0, \
8740 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
8742 # error "Unexpected x86 80-bit big-endian long double format"
8744 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE
8745 /* For double-double we assume only the first double (in LE or BE terms)
8746 * is used for NaN. */
8747 # define NV_NAN_PAYLOAD_MASK \
8748 NV_NAN_PAYLOAD_MASK_SKIP_EIGHT, NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE
8749 # define NV_NAN_PAYLOAD_PERM \
8750 NV_NAN_PAYLOAD_PERM_SKIP_EIGHT, NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE
8751 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE
8752 # define NV_NAN_PAYLOAD_MASK \
8753 NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE
8754 # define NV_NAN_PAYLOAD_PERM \
8755 NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE
8756 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE
8757 # define NV_NAN_PAYLOAD_MASK \
8758 NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE
8759 # define NV_NAN_PAYLOAD_PERM \
8760 NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE
8761 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE
8762 # define NV_NAN_PAYLOAD_MASK \
8763 NV_NAN_PAYLOAD_MASK_SKIP_EIGHT, NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE
8764 # define NV_NAN_PAYLOAD_PERM \
8765 NV_NAN_PAYLOAD_PERM_SKIP_EIGHT, NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE
8767 # error "Unexpected long double format"
8770 # ifdef USE_QUADMATH /* quadmath is not long double */
8771 # ifdef NV_LITTLE_ENDIAN
8772 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE
8773 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE
8774 # elif defined(NV_BIG_ENDIAN)
8775 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE
8776 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE
8778 # error "Unexpected quadmath format"
8780 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_LITTLE_ENDIAN
8781 # define NV_NAN_PAYLOAD_MASK 0xff, 0xff, 0x07, 0x00
8782 # define NV_NAN_PAYLOAD_PERM 0x0, 0x1, 0x2, 0xFF
8783 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_BIG_ENDIAN
8784 # define NV_NAN_PAYLOAD_MASK 0x00, 0x07, 0xff, 0xff
8785 # define NV_NAN_PAYLOAD_PERM 0xFF, 0x2, 0x1, 0x0
8786 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_LITTLE_ENDIAN
8787 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE
8788 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE
8789 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_BIG_ENDIAN
8790 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE
8791 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE
8792 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN
8793 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE
8794 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE
8795 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN
8796 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE
8797 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE
8798 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_LE_BE
8799 # define NV_NAN_PAYLOAD_MASK 0xff, 0xff, 0x07, 0x00, 0xff, 0xff, 0xff, 0xff
8800 # define NV_NAN_PAYLOAD_PERM 0x4, 0x5, 0x6, 0xFF, 0x0, 0x1, 0x2, 0x3
8801 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_BE_LE
8802 # define NV_NAN_PAYLOAD_MASK 0xff, 0xff, 0xff, 0xff, 0x00, 0x07, 0xff, 0xff
8803 # define NV_NAN_PAYLOAD_PERM 0x3, 0x2, 0x1, 0x0, 0xFF, 0x6, 0x5, 0x4
8805 # error "Unexpected double format"
8809 #endif /* DOUBLE_HAS_NAN */
8814 (KEEP THIS LAST IN perl.h!)
8856 so that Configure picks them up.
8858 (KEEP THIS LAST IN perl.h!)
8862 #endif /* Include guard */
8865 * ex: set ts=8 sts=4 sw=4 et: