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a0d0e21e 1/* perl.h
a687059c 2 *
1129b882 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5cd3f21a 4 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others
a687059c 5 *
352d5a3a
LW		 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.
8d063cd8 8 *
8d063cd8 9 */
d6376244 10
85e6fe83
LW		 11#ifndef H_PERL
12#define H_PERL 1
8d063cd8 13
760ac839
LW		 14#ifdef PERL_FOR_X2P
15/*
d460ef45 16 * This file is being used for x2p stuff.
760ac839 17 * Above symbol is defined via -D in 'x2p/Makefile.SH'
d460ef45 18 * Decouple x2p stuff from some of perls more extreme eccentricities.
760ac839 19 */
55497cff 20#undef MULTIPLICITY
760ac839
LW		 21#undef USE_STDIO
22#define USE_STDIO
23#endif /* PERL_FOR_X2P */
24
d460ef45 25#ifdef PERL_MICRO
12ae5dfc
JH		 26# include "uconfig.h"
27#else
611cf957 28# include "config.h"
12ae5dfc 29#endif
0cb96387 30
2c2d71f5
JH		 31/* See L<perlguts/"The Perl API"> for detailed notes on
32 * PERL_IMPLICIT_CONTEXT and PERL_IMPLICIT_SYS */
33
ac6bedea
JH		 34/* Note that from here --> to <-- the same logic is
35 * repeated in makedef.pl, so be certain to update
36 * both places when editing. */
37
6f4183fe 38#ifdef USE_ITHREADS
acfe0abc 39# if !defined(MULTIPLICITY)
6f4183fe
GS		 40# define MULTIPLICITY
41# endif
42#endif
43
27da23d5
JH		 44#ifdef PERL_GLOBAL_STRUCT_PRIVATE
45# ifndef PERL_GLOBAL_STRUCT
46# define PERL_GLOBAL_STRUCT
47# endif
48#endif
97aff369 49
27da23d5
JH		 50#ifdef PERL_GLOBAL_STRUCT
51# ifndef MULTIPLICITY
52# define MULTIPLICITY
53# endif
54#endif
55
97aff369
JH		 56#ifdef MULTIPLICITY
57# ifndef PERL_IMPLICIT_CONTEXT
58# define PERL_IMPLICIT_CONTEXT
59# endif
60#endif
61
026fd48b
GH		 62/* undef WIN32 when building on Cygwin (for libwin32) - gph */
63#ifdef __CYGWIN__
64# undef WIN32
65# undef _WIN32
66#endif
67
27da23d5
JH		 68#if defined(__SYMBIAN32__) || (defined(__VC32__) && defined(WINS))
69# ifndef SYMBIAN
70# define SYMBIAN
71# endif
72#endif
73
a0fd4948 74#ifdef __SYMBIAN32__
27da23d5
JH		 75# include "symbian/symbian_proto.h"
76#endif
77
78/* Any stack-challenged places. The limit varies (and often
79 * is configurable), but using more than a kilobyte of stack
80 * is usually dubious in these systems. */
739a0b84
NC		 81#if defined(__SYMBIAN32__)
82/* Symbian: need to work around the SDK features. *
27da23d5
JH		 83 * On WINS: MS VC5 generates calls to _chkstk, *
84 * if a "large" stack frame is allocated. *
85 * gcc on MARM does not generate calls like these. */
86# define USE_HEAP_INSTEAD_OF_STACK
87#endif
88
dd134d2c 89/* Use the reentrant APIs like localtime_r and getpwent_r */
10bc17b6 90/* Win32 has naturally threadsafe libraries, no need to use any _r variants. */
6239f2da 91#if defined(USE_ITHREADS) && !defined(USE_REENTRANT_API) && !defined(NETWARE) && !defined(WIN32) && !defined(PERL_DARWIN)
10bc17b6
JH		 92# define USE_REENTRANT_API
93#endif
94
ac6bedea
JH		 95/* <--- here ends the logic shared by perl.h and makedef.pl */
96
9ea40801
SH		 97/* Microsoft Visual C++ 6.0 needs special treatment in numerous places */
98#if defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1200 && _MSC_VER < 1300
99# define USING_MSVC6
100#endif
101
cf5a8da6
MHM		 102#undef START_EXTERN_C
103#undef END_EXTERN_C
104#undef EXTERN_C
105#ifdef __cplusplus
106# define START_EXTERN_C extern "C" {
107# define END_EXTERN_C }
108# define EXTERN_C extern "C"
109#else
110# define START_EXTERN_C
111# define END_EXTERN_C
112# define EXTERN_C extern
113#endif
114
17a6c8e3
AD		 115/* Fallback definitions in case we don't have definitions from config.h.
116 This should only matter for systems that don't use Configure and
117 haven't been modified to define PERL_STATIC_INLINE yet.
118*/
119#if !defined(PERL_STATIC_INLINE)
120# ifdef HAS_STATIC_INLINE
121# define PERL_STATIC_INLINE static inline
122# else
123# define PERL_STATIC_INLINE static
124# endif
125#endif
126
27da23d5
JH		 127#ifdef PERL_GLOBAL_STRUCT
128# ifndef PERL_GET_VARS
129# ifdef PERL_GLOBAL_STRUCT_PRIVATE
cf5a8da6 130 EXTERN_C struct perl_vars* Perl_GetVarsPrivate();
27da23d5
JH		 131# define PERL_GET_VARS() Perl_GetVarsPrivate() /* see miniperlmain.c */
132# ifndef PERLIO_FUNCS_CONST
133# define PERLIO_FUNCS_CONST /* Can't have these lying around. */
134# endif
135# else
136# define PERL_GET_VARS() PL_VarsPtr
137# endif
138# endif
139#endif
140
5aaab254 141#define pVAR struct perl_vars* my_vars PERL_UNUSED_DECL
27da23d5
JH		 142
143#ifdef PERL_GLOBAL_STRUCT
144# define dVAR pVAR = (struct perl_vars*)PERL_GET_VARS()
145#else
146# define dVAR dNOOP
147#endif
148
c5be433b 149#ifdef PERL_IMPLICIT_CONTEXT
3db8f154
MB		 150# ifndef MULTIPLICITY
151# define MULTIPLICITY
c5be433b 152# endif
e8dda941 153# define tTHX PerlInterpreter*
5aaab254 154# define pTHX tTHX my_perl PERL_UNUSED_DECL
3db8f154 155# define aTHX my_perl
9399a70c 156# define aTHXa(a) aTHX = (tTHX)a
27da23d5 157# ifdef PERL_GLOBAL_STRUCT
e8dda941 158# define dTHXa(a) dVAR; pTHX = (tTHX)a
27da23d5 159# else
e8dda941 160# define dTHXa(a) pTHX = (tTHX)a
27da23d5
JH		 161# endif
162# ifdef PERL_GLOBAL_STRUCT
163# define dTHX dVAR; pTHX = PERL_GET_THX
164# else
165# define dTHX pTHX = PERL_GET_THX
166# endif
c5be433b 167# define pTHX_ pTHX,
c5be433b 168# define aTHX_ aTHX,
4373e329 169# define pTHX_1 2
894356b3
GS		 170# define pTHX_2 3
171# define pTHX_3 4
172# define pTHX_4 5
4373e329
AL		 173# define pTHX_5 6
174# define pTHX_6 7
a3b680e6
AL		 175# define pTHX_7 8
176# define pTHX_8 9
177# define pTHX_9 10
a6fc70e5 178# define pTHX_12 13
e8dda941
JD		 179# if defined(DEBUGGING) && !defined(PERL_TRACK_MEMPOOL)
180# define PERL_TRACK_MEMPOOL
181# endif
182#else
183# undef PERL_TRACK_MEMPOOL
c5be433b
GS		 184#endif
185
76e3520e 186#define STATIC static
16c91539
BM		 187
188#ifndef PERL_CORE
189/* Do not use these macros. They were part of PERL_OBJECT, which was an
190 * implementation of multiplicity using C++ objects. They have been left
191 * here solely for the sake of XS code which has incorrectly
192 * cargo-culted them.
193 */
76e3520e 194#define CPERLscope(x) x
565764a8 195#define CPERLarg void
76e3520e 196#define CPERLarg_
e3b8966e 197#define _CPERLarg
1d583055
GS		 198#define PERL_OBJECT_THIS
199#define _PERL_OBJECT_THIS
200#define PERL_OBJECT_THIS_
312caa8e 201#define CALL_FPTR(fptr) (*fptr)
ef69c8fc 202#define MEMBER_TO_FPTR(name) name
16c91539 203#endif /* !PERL_CORE */
76e3520e 204
16c91539 205#define CALLRUNOPS PL_runops
f9f4320a 206
3ab4a224 207#define CALLREGCOMP(sv, flags) Perl_pregcomp(aTHX_ (sv),(flags))
f9f4320a 208
16c91539 209#define CALLREGCOMP_ENG(prog, sv, flags) (prog)->comp(aTHX_ sv, flags)
a340edde 210#define CALLREGEXEC(prog,stringarg,strend,strbeg,minend,sv,data,flags) \
16c91539 211 RX_ENGINE(prog)->exec(aTHX_ (prog),(stringarg),(strend), \
a340edde 212 (strbeg),(minend),(sv),(data),(flags))
52a21eb3
DM		 213#define CALLREG_INTUIT_START(prog,sv,strbeg,strpos,strend,flags,data) \
214 RX_ENGINE(prog)->intuit(aTHX_ (prog), (sv), (strbeg), (strpos), \
f9f4320a
YO		 215 (strend),(flags),(data))
216#define CALLREG_INTUIT_STRING(prog) \
16c91539 217 RX_ENGINE(prog)->checkstr(aTHX_ (prog))
f8149455 218
f8149455
YO		 219#define CALLREGFREE(prog) \
220 Perl_pregfree(aTHX_ (prog))
221
222#define CALLREGFREE_PVT(prog) \
16c91539 223 if(prog) RX_ENGINE(prog)->free(aTHX_ (prog))
f8149455 224
2fdbfb4d 225#define CALLREG_NUMBUF_FETCH(rx,paren,usesv) \
16c91539 226 RX_ENGINE(rx)->numbered_buff_FETCH(aTHX_ (rx),(paren),(usesv))
93b32b6d 227
2fdbfb4d 228#define CALLREG_NUMBUF_STORE(rx,paren,value) \
16c91539 229 RX_ENGINE(rx)->numbered_buff_STORE(aTHX_ (rx),(paren),(value))
2fdbfb4d
AB		 230
231#define CALLREG_NUMBUF_LENGTH(rx,sv,paren) \
16c91539 232 RX_ENGINE(rx)->numbered_buff_LENGTH(aTHX_ (rx),(sv),(paren))
2fdbfb4d 233
192b9cd1 234#define CALLREG_NAMED_BUFF_FETCH(rx, key, flags) \
16c91539 235 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_FETCH))
192b9cd1
AB		 236
237#define CALLREG_NAMED_BUFF_STORE(rx, key, value, flags) \
16c91539 238 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), (value), ((flags) | RXapif_STORE))
192b9cd1
AB		 239
240#define CALLREG_NAMED_BUFF_DELETE(rx, key, flags) \
16c91539 241 RX_ENGINE(rx)->named_buff(aTHX_ (rx),(key), NULL, ((flags) | RXapif_DELETE))
192b9cd1
AB		 242
243#define CALLREG_NAMED_BUFF_CLEAR(rx, flags) \
16c91539 244 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_CLEAR))
192b9cd1
AB		 245
246#define CALLREG_NAMED_BUFF_EXISTS(rx, key, flags) \
16c91539 247 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_EXISTS))
192b9cd1
AB		 248
249#define CALLREG_NAMED_BUFF_FIRSTKEY(rx, flags) \
16c91539 250 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), NULL, ((flags) | RXapif_FIRSTKEY))
192b9cd1
AB		 251
252#define CALLREG_NAMED_BUFF_NEXTKEY(rx, lastkey, flags) \
16c91539 253 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), (lastkey), ((flags) | RXapif_NEXTKEY))
192b9cd1
AB		 254
255#define CALLREG_NAMED_BUFF_SCALAR(rx, flags) \
16c91539 256 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_SCALAR))
192b9cd1
AB		 257
258#define CALLREG_NAMED_BUFF_COUNT(rx) \
16c91539 259 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, RXapif_REGNAMES_COUNT)
192b9cd1
AB		 260
261#define CALLREG_NAMED_BUFF_ALL(rx, flags) \
16c91539 262 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, flags)
93b32b6d 263
49d7dfbc 264#define CALLREG_PACKAGE(rx) \
16c91539 265 RX_ENGINE(rx)->qr_package(aTHX_ (rx))
93b32b6d 266
00f254e2 267#if defined(USE_ITHREADS)
f9f4320a 268#define CALLREGDUPE(prog,param) \
f8149455
YO		 269 Perl_re_dup(aTHX_ (prog),(param))
270
271#define CALLREGDUPE_PVT(prog,param) \
16c91539 272 (prog ? RX_ENGINE(prog)->dupe(aTHX_ (prog),(param)) \
00f254e2 273 : (REGEXP *)NULL)
f9f4320a 274#endif
14dd3ad8 275
a20207d7 276
bcdf7404 277
a20207d7
YO		 278
279
5ba4cab2
SH		 280/*
281 * Because of backward compatibility reasons the PERL_UNUSED_DECL
282 * cannot be changed from postfix to PERL_UNUSED_DECL(x). Sigh.
283 *
284 * Note that there are C compilers such as MetroWerks CodeWarrior
1266ad8c 285 * which do not have an "inlined" way (like the gcc __attribute__) of
5ba4cab2
SH		 286 * marking unused variables (they need e.g. a #pragma) and therefore
287 * cpp macros like PERL_UNUSED_DECL cannot work for this purpose, even
288 * if it were PERL_UNUSED_DECL(x), which it cannot be (see above).
289 *
290 */
1266ad8c 291
9969cdde 292#if defined(__SYMBIAN32__) && defined(__GNUC__)
5b2bd0a5 293# ifdef __cplusplus
5ba4cab2 294# define PERL_UNUSED_DECL
5b2bd0a5 295# else
5ba4cab2 296# define PERL_UNUSED_DECL __attribute__((unused))
5b2bd0a5
AMS		 297# endif
298#endif
44dbb695 299
5b2bd0a5 300#ifndef PERL_UNUSED_DECL
34659ad4 301# if defined(HASATTRIBUTE_UNUSED) && !defined(__cplusplus)
5ba4cab2 302# define PERL_UNUSED_DECL __attribute__unused__
b79c357a 303# else
5ba4cab2 304# define PERL_UNUSED_DECL
b79c357a 305# endif
5b2bd0a5 306#endif
00f254e2 307
349b520e
DM		 308/* gcc -Wall:
309 * for silencing unused variables that are actually used most of the time,
a0288114 310 * but we cannot quite get rid of, such as "ax" in PPCODE+noargs xsubs
349b520e 311 */
53c1dcc0 312#ifndef PERL_UNUSED_ARG
c99ffe5e 313# if defined(lint) && defined(S_SPLINT_S) /* www.splint.org */
ad73156c 314# include <note.h>
53c1dcc0 315# define PERL_UNUSED_ARG(x) NOTE(ARGUNUSED(x))
ad73156c 316# else
53c1dcc0 317# define PERL_UNUSED_ARG(x) ((void)x)
ad73156c
AL		 318# endif
319#endif
53c1dcc0
AL		 320#ifndef PERL_UNUSED_VAR
321# define PERL_UNUSED_VAR(x) ((void)x)
322#endif
ad73156c 323
23491f1d 324#if defined(USE_ITHREADS) || defined(PERL_GLOBAL_STRUCT)
96a5add6
AL		 325# define PERL_UNUSED_CONTEXT PERL_UNUSED_ARG(my_perl)
326#else
327# define PERL_UNUSED_CONTEXT
328#endif
329
24e7ff4e
JH		 330/* gcc (-ansi) -pedantic doesn't allow gcc statement expressions,
331 * g++ allows them but seems to have problems with them
332 * (insane errors ensue).
333 * g++ does not give insane errors now (RMB 2008-01-30, gcc 4.2.2).
334 */
335#if defined(PERL_GCC_PEDANTIC) || \
336 (defined(__GNUC__) && defined(__cplusplus) && \
337 ((__GNUC__ < 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ < 2))))
338# ifndef PERL_GCC_BRACE_GROUPS_FORBIDDEN
339# define PERL_GCC_BRACE_GROUPS_FORBIDDEN
340# endif
341#endif
342
ffea512f 343/* Use PERL_UNUSED_RESULT() to suppress the warnings about unused results
b469f1e0
JH		 344 * of function calls, e.g. PERL_UNUSED_RESULT(foo(a, b)).
345 *
346 * The main reason for this is that the combination of gcc -Wunused-result
347 * (part of -Wall) and the __attribute__((warn_unused_result)) cannot
348 * be silenced with casting to void. This causes trouble when the system
349 * header files use the attribute.
350 *
351 * Use PERL_UNUSED_RESULT sparingly, though, since usually the warning
352 * is there for a good reason: you might lose success/failure information,
353 * or leak resources, or changes in resources.
ffea512f
JH		 354 *
355 * But sometimes you just want to ignore the return value, e.g. on
b469f1e0
JH		 356 * codepaths soon ending up in abort, or in "best effort" attempts,
357 * or in situations where there is no good way to handle failures.
ffea512f 358 *
b469f1e0
JH		 359 * Sometimes PERL_UNUSED_RESULT might not be the most natural way:
360 * another possibility is that you can capture the return value
361 * and use PERL_UNUSED_VAR on that.
ffea512f 362 *
b469f1e0
JH		 363 * The __typeof__() is used instead of typeof() since typeof() is not
364 * available under strict C89, and because of compilers masquerading
365 * as gcc (clang and icc), we want exactly the gcc extension
366 * __typeof__ and nothing else.
ffea512f
JH		 367 */
368#ifndef PERL_UNUSED_RESULT
b469f1e0
JH		 369# if defined(__GNUC__) && defined(HASATTRIBUTE_WARN_UNUSED_RESULT)
370# define PERL_UNUSED_RESULT(v) STMT_START { __typeof__(v) z = (v); (void)sizeof(z); } STMT_END
ffea512f
JH		 371# else
372# define PERL_UNUSED_RESULT(v) ((void)(v))
373# endif
374#endif
375
b56aac20
DM		 376/* on gcc (and clang), specify that a warning should be temporarily
377 * ignored; e.g.
378 *
379 * GCC_DIAG_IGNORE(-Wmultichar);
380 * char b = 'ab';
381 * GCC_DIAG_RESTORE;
382 *
383 * based on http://dbp-consulting.com/tutorials/SuppressingGCCWarnings.html
384 *
385 * Note that "pragma GCC diagnostic push/pop" was added in GCC 4.6, Mar 2011;
386 * clang only pretends to be GCC 4.2, but still supports push/pop.
c1d6452f
JH		 387 *
388 * Note on usage: on non-gcc (or lookalike, like clang) compilers
389 * one cannot use these at file (global) level without warnings
390 * since they are defined as empty, which leads into the terminating
391 * semicolon being left alone on a line:
392 * ;
393 * which makes compilers mildly cranky. Therefore at file level one
6ab56f1e
JH		 394 * should use the GCC_DIAG_IGNORE and GCC_DIAG_RESTORE_FILE *without*
395 * the semicolons.
c1d6452f
JH		 396 *
397 * (A dead-on-arrival solution would be to try to define the macros as
398 * NOOP or dNOOP, those don't work both inside functions and outside.)
b56aac20
DM		 399 */
400
57d4b8c5 401#if defined(__clang__) || defined(__clang) || \
d28ce8b4 402 (defined( __GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406)
c1d6452f
JH		 403# define GCC_DIAG_PRAGMA(x) _Pragma (#x)
404/* clang has "clang diagnostic" pragmas, but also understands gcc. */
b56aac20 405# define GCC_DIAG_IGNORE(x) _Pragma("GCC diagnostic push") \
c1d6452f 406 GCC_DIAG_PRAGMA(GCC diagnostic ignored #x)
b56aac20
DM		 407# define GCC_DIAG_RESTORE _Pragma("GCC diagnostic pop")
408#else
8ce6f80a
JH		 409# define GCC_DIAG_IGNORE(w)
410# define GCC_DIAG_RESTORE
b56aac20
DM		 411#endif
412
6f207bd3 413#define NOOP /*EMPTY*/(void)0
bafdc25d
NC		 414/* cea2e8a9dd23747f accidentally lost the comment originally from the first
415 check in of thread.h, explaining why we need dNOOP at all: */
416/* Rats: if dTHR is just blank then the subsequent ";" throws an error */
417/* Declaring a *function*, instead of a variable, ensures that we don't rely
418 on being able to suppress "unused" warnings. */
7db66e12
CB		 419#ifdef __cplusplus
420#define dNOOP (void)0
421#else
64a8239e 422#define dNOOP extern int Perl___notused(void)
7db66e12 423#endif
71be2cbc 424
0cb96387 425#ifndef pTHX
a78adc84 426/* Don't bother defining tTHX ; using it outside
e8dda941
JD		 427 * code guarded by PERL_IMPLICIT_CONTEXT is an error.
428 */
0cb96387
GS		 429# define pTHX void
430# define pTHX_
0cb96387
GS		 431# define aTHX
432# define aTHX_
9399a70c 433# define aTHXa(a) NOOP
0cb96387
GS		 434# define dTHXa(a) dNOOP
435# define dTHX dNOOP
894356b3
GS		 436# define pTHX_1 1
437# define pTHX_2 2
438# define pTHX_3 3
439# define pTHX_4 4
3d42dc86
RGS		 440# define pTHX_5 5
441# define pTHX_6 6
a3b680e6
AL		 442# define pTHX_7 7
443# define pTHX_8 8
444# define pTHX_9 9
a6fc70e5 445# define pTHX_12 12
0cb96387
GS		 446#endif
447
27da23d5
JH		 448#ifndef dVAR
449# define dVAR dNOOP
450#endif
451
b4f7f263
GS		 452/* these are only defined for compatibility; should not be used internally */
453#if !defined(pTHXo) && !defined(PERL_CORE)
0cb96387
GS		 454# define pTHXo pTHX
455# define pTHXo_ pTHX_
0cb96387
GS		 456# define aTHXo aTHX
457# define aTHXo_ aTHX_
c5be433b 458# define dTHXo dTHX
71d280e3 459# define dTHXoa(x) dTHXa(x)
0cb96387
GS		 460#endif
461
462#ifndef pTHXx
5aaab254 463# define pTHXx PerlInterpreter *my_perl
0cb96387 464# define pTHXx_ pTHXx,
0cb96387
GS		 465# define aTHXx my_perl
466# define aTHXx_ aTHXx,
c5be433b 467# define dTHXx dTHX
22c35a8c 468#endif
71be2cbc 469
1de7c2ac
GS		 470/* Under PERL_IMPLICIT_SYS (used in Windows for fork emulation)
471 * PerlIO_foo() expands to PL_StdIO->pFOO(PL_StdIO, ...).
472 * dTHXs is therefore needed for all functions using PerlIO_foo(). */
473#ifdef PERL_IMPLICIT_SYS
27da23d5
JH		 474# ifdef PERL_GLOBAL_STRUCT_PRIVATE
475# define dTHXs dVAR; dTHX
476# else
477# define dTHXs dTHX
478# endif
1de7c2ac 479#else
27da23d5
JH		 480# ifdef PERL_GLOBAL_STRUCT_PRIVATE
481# define dTHXs dVAR
482# else
483# define dTHXs dNOOP
484# endif
1de7c2ac
GS		 485#endif
486
27da23d5
JH		 487/* Some platforms require marking function declarations
488 * for them to be exportable. Used in perlio.h, proto.h
489 * is handled either by the makedef.pl or by defining the
490 * PERL_CALLCONV to be something special. See also the
491 * definition of XS() in XSUB.h. */
492#ifndef PERL_EXPORT_C
a0c21aa1
JH		 493# ifdef __cplusplus
494# define PERL_EXPORT_C extern "C"
495# else
496# define PERL_EXPORT_C extern
497# endif
27da23d5
JH		 498#endif
499#ifndef PERL_XS_EXPORT_C
a0c21aa1
JH		 500# ifdef __cplusplus
501# define PERL_XS_EXPORT_C extern "C"
502# else
503# define PERL_XS_EXPORT_C
504# endif
27da23d5
JH		 505#endif
506
5b692037
JH		 507#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__cplusplus)
508# ifndef PERL_USE_GCC_BRACE_GROUPS
509# define PERL_USE_GCC_BRACE_GROUPS
510# endif
511#endif
512
728e2803 513/*
514 * STMT_START { statements; } STMT_END;
515 * can be used as a single statement, as in
516 * if (x) STMT_START { ... } STMT_END; else ...
517 *
518 * Trying to select a version that gives no warnings...
519 */
520#if !(defined(STMT_START) && defined(STMT_END))
5b692037 521# ifdef PERL_USE_GCC_BRACE_GROUPS
a0288114 522# define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
728e2803 523# define STMT_END )
524# else
728e2803 525# define STMT_START do
526# define STMT_END while (0)
728e2803 527# endif
528#endif
529
d6f9c181
JH		 530#ifndef BYTEORDER /* Should never happen -- byteorder is in config.h */
531# define BYTEORDER 0x1234
79072805
LW		 532#endif
533
534/* Overall memory policy? */
535#ifndef CONSERVATIVE
536# define LIBERAL 1
537#endif
538
8ada0baa
JH		 539#if 'A' == 65 && 'I' == 73 && 'J' == 74 && 'Z' == 90
540#define ASCIIish
541#else
542#undef ASCIIish
543#endif
544
79072805
LW		 545/*
546 * The following contortions are brought to you on behalf of all the
547 * standards, semi-standards, de facto standards, not-so-de-facto standards
548 * of the world, as well as all the other botches anyone ever thought of.
549 * The basic theory is that if we work hard enough here, the rest of the
550 * code can be a lot prettier. Well, so much for theory. Sorry, Henry...
551 */
ac58e20f 552
ee0007ab 553/* define this once if either system, instead of cluttering up the src */
7c458fae 554#if defined(MSDOS) || defined(WIN32) || defined(NETWARE)
ee0007ab
LW		 555#define DOSISH 1
556#endif
557
739a0b84 558#if defined(__STDC__) || defined(_AIX) || defined(__stdc__) || defined(__cplusplus) || defined(NETWARE) || defined(__SYMBIAN32__)
352d5a3a
LW		 559# define STANDARD_C 1
560#endif
561
8d87852b 562#if defined(__cplusplus) || defined(WIN32) || defined(__sgi) || defined(__EMX__) || defined(__QNX__) || defined(NETWARE) || defined(PERL_MICRO)
68dc0745 563# define DONT_DECLARE_STD 1
564#endif
565
352d5a3a 566#if defined(HASVOLATILE) || defined(STANDARD_C)
79072805 567# define VOL volatile
663a0e37 568#else
79072805 569# define VOL
663a0e37
LW		 570#endif
571
284167a5
S		 572/* By compiling a perl with -DNO_TAINT_SUPPORT or -DSILENT_NO_TAINT_SUPPORT,
573 * you get a perl without taint support, but doubtlessly with a lesser
574 * degree of support. Do not do so unless you know exactly what it means
575 * technically, have a good reason to do so, and know exactly how the
576 * perl will be used. perls with -DSILENT_NO_TAINT_SUPPORT are considered
577 * a potential security risk due to flat out ignoring the security-relevant
578 * taint flags. This being said, a perl without taint support compiled in
579 * has marginal run-time performance benefits.
580 * SILENT_NO_TAINT_SUPPORT implies NO_TAINT_SUPPORT.
581 * SILENT_NO_TAINT_SUPPORT is the same as NO_TAINT_SUPPORT except it
582 * silently ignores -t/-T instead of throwing an exception.
053a3618
S		 583 *
584 * DANGER! Using NO_TAINT_SUPPORT or SILENT_NO_TAINT_SUPPORT
6ecb40c7 585 * voids your nonexistent warranty!
284167a5 586 */
dc6d7f5c 587#if defined(SILENT_NO_TAINT_SUPPORT) && !defined(NO_TAINT_SUPPORT)
284167a5
S		 588# define NO_TAINT_SUPPORT 1
589#endif
590
591/* NO_TAINT_SUPPORT can be set to transform virtually all taint-related
592 * operations into no-ops for a very modest speed-up. Enable only if you
593 * know what you're doing: tests and CPAN modules' tests are bound to fail.
594 */
dc6d7f5c 595#ifdef NO_TAINT_SUPPORT
284167a5
S		 596# define TAINT NOOP
597# define TAINT_NOT NOOP
598# define TAINT_IF(c) NOOP
599# define TAINT_ENV() NOOP
600# define TAINT_PROPER(s) NOOP
601# define TAINT_set(s) NOOP
602# define TAINT_get 0
603# define TAINTING_get 0
604# define TAINTING_set(s) NOOP
605# define TAINT_WARN_get 0
606# define TAINT_WARN_set(s) NOOP
607#else
608# define TAINT (PL_tainted = TRUE)
609# define TAINT_NOT (PL_tainted = FALSE)
2439e033
S		 610# define TAINT_IF(c) if (UNLIKELY(c)) { PL_tainted = TRUE; }
611# define TAINT_ENV() if (UNLIKELY(PL_tainting)) { taint_env(); }
612# define TAINT_PROPER(s) if (UNLIKELY(PL_tainting)) { taint_proper(NULL, s); }
284167a5
S		 613# define TAINT_set(s) (PL_tainted = (s))
614# define TAINT_get (PL_tainted)
615# define TAINTING_get (PL_tainting)
616# define TAINTING_set(s) (PL_tainting = (s))
617# define TAINT_WARN_get (PL_taint_warn)
618# define TAINT_WARN_set(s) (PL_taint_warn = (s))
619#endif
a687059c 620
20be6587
DM		 621/* flags used internally only within pp_subst and pp_substcont */
622#ifdef PERL_CORE
623# define SUBST_TAINT_STR 1 /* string tainted */
624# define SUBST_TAINT_PAT 2 /* pattern tainted */
625# define SUBST_TAINT_REPL 4 /* replacement tainted */
626# define SUBST_TAINT_RETAINT 8 /* use re'taint' in scope */
627# define SUBST_TAINT_BOOLRET 16 /* return is boolean (don't taint) */
628#endif
629
d460ef45 630/* XXX All process group stuff is handled in pp_sys.c. Should these
a6e633de 631 defines move there? If so, I could simplify this a lot. --AD 9/96.
632*/
633/* Process group stuff changed from traditional BSD to POSIX.
634 perlfunc.pod documents the traditional BSD-style syntax, so we'll
635 try to preserve that, if possible.
636*/
637#ifdef HAS_SETPGID
638# define BSD_SETPGRP(pid, pgrp) setpgid((pid), (pgrp))
c07a80fd 639#else
a6e633de 640# if defined(HAS_SETPGRP) && defined(USE_BSD_SETPGRP)
641# define BSD_SETPGRP(pid, pgrp) setpgrp((pid), (pgrp))
642# else
643# ifdef HAS_SETPGRP2 /* DG/UX */
644# define BSD_SETPGRP(pid, pgrp) setpgrp2((pid), (pgrp))
645# endif
646# endif
647#endif
648#if defined(BSD_SETPGRP) && !defined(HAS_SETPGRP)
649# define HAS_SETPGRP /* Well, effectively it does . . . */
650#endif
651
652/* getpgid isn't POSIX, but at least Solaris and Linux have it, and it makes
653 our life easier :-) so we'll try it.
654*/
655#ifdef HAS_GETPGID
656# define BSD_GETPGRP(pid) getpgid((pid))
657#else
658# if defined(HAS_GETPGRP) && defined(USE_BSD_GETPGRP)
659# define BSD_GETPGRP(pid) getpgrp((pid))
660# else
661# ifdef HAS_GETPGRP2 /* DG/UX */
662# define BSD_GETPGRP(pid) getpgrp2((pid))
663# endif
664# endif
665#endif
666#if defined(BSD_GETPGRP) && !defined(HAS_GETPGRP)
667# define HAS_GETPGRP /* Well, effectively it does . . . */
668#endif
669
d460ef45 670/* These are not exact synonyms, since setpgrp() and getpgrp() may
a6e633de 671 have different behaviors, but perl.h used to define USE_BSDPGRP
672 (prior to 5.003_05) so some extension might depend on it.
673*/
674#if defined(USE_BSD_SETPGRP) || defined(USE_BSD_GETPGRP)
675# ifndef USE_BSDPGRP
676# define USE_BSDPGRP
677# endif
663a0e37
LW		 678#endif
679
486ec47a 680/* HP-UX 10.X CMA (Common Multithreaded Architecture) insists that
8ac5a1fe
MH		 681 pthread.h must be included before all other header files.
682*/
3db8f154 683#if defined(USE_ITHREADS) && defined(PTHREAD_H_FIRST) && defined(I_PTHREAD)
8ac5a1fe
MH		 684# include <pthread.h>
685#endif
686
58ab9e8b 687#include <sys/types.h>
663a0e37 688
760ac839
LW		 689#ifdef __cplusplus
690# ifndef I_STDARG
691# define I_STDARG 1
692# endif
693#endif
694
695#ifdef I_STDARG
696# include <stdarg.h>
697#else
698# ifdef I_VARARGS
699# include <varargs.h>
700# endif
701#endif
702
fe14fcc3 703#include <ctype.h>
a0d0e21e
LW		 704
705#ifdef METHOD /* Defined by OSF/1 v3.0 by ctype.h */
706#undef METHOD
a0d0e21e
LW		 707#endif
708
12ae5dfc
JH		 709#ifdef PERL_MICRO
710# define NO_LOCALE
711#endif
712
4633a7c4 713#ifdef I_LOCALE
36477c24 714# include <locale.h>
4633a7c4
LW		 715#endif
716
36477c24 717#if !defined(NO_LOCALE) && defined(HAS_SETLOCALE)
718# define USE_LOCALE
ccd65d51
KW		 719# define HAS_SKIP_LOCALE_INIT /* Solely for XS code to test for this
720 capability */
36477c24 721# if !defined(NO_LOCALE_COLLATE) && defined(LC_COLLATE) \
722 && defined(HAS_STRXFRM)
723# define USE_LOCALE_COLLATE
724# endif
725# if !defined(NO_LOCALE_CTYPE) && defined(LC_CTYPE)
726# define USE_LOCALE_CTYPE
727# endif
728# if !defined(NO_LOCALE_NUMERIC) && defined(LC_NUMERIC)
729# define USE_LOCALE_NUMERIC
730# endif
fa9b773e
KW		 731# if !defined(NO_LOCALE_MESSAGES) && defined(LC_MESSAGES)
732# define USE_LOCALE_MESSAGES
733# endif
734# if !defined(NO_LOCALE_MONETARY) && defined(LC_MONETARY)
735# define USE_LOCALE_MONETARY
736# endif
56e45410
KW		 737# if !defined(NO_LOCALE_TIME) && defined(LC_TIME)
738# define USE_LOCALE_TIME
739# endif
b385bb4d
KW		 740# ifndef WIN32 /* No wrapper except on Windows */
741# define my_setlocale(a,b) setlocale(a,b)
742# endif
36477c24 743#endif /* !NO_LOCALE && HAS_SETLOCALE */
a0d0e21e 744
fe14fcc3 745#include <setjmp.h>
79072805 746
a0d0e21e 747#ifdef I_SYS_PARAM
79072805
LW		 748# ifdef PARAM_NEEDS_TYPES
749# include <sys/types.h>
750# endif
751# include <sys/param.h>
352d5a3a 752#endif
79072805 753
ce3470dc
AD		 754/* On BSD-derived systems, <sys/param.h> defines BSD to a year-month
755 value something like 199306. This may be useful if no more-specific
756 feature test is available.
757*/
758#if defined(BSD)
759# ifndef BSDish
760# define BSDish
761# endif
762#endif
763
79072805 764/* Use all the "standard" definitions? */
a0d0e21e 765#if defined(STANDARD_C) && defined(I_STDLIB)
79072805 766# include <stdlib.h>
ff68c719 767#endif
03a14243 768
3f270f98
JH		 769/* If this causes problems, set i_unistd=undef in the hint file. */
770#ifdef I_UNISTD
771# include <unistd.h>
772#endif
773
de8ca8af
NT		 774/* for WCOREDUMP */
775#ifdef I_SYS_WAIT
776# include <sys/wait.h>
777#endif
778
9969cdde 779#ifdef __SYMBIAN32__
27da23d5
JH		 780# undef _SC_ARG_MAX /* Symbian has _SC_ARG_MAX but no sysconf() */
781#endif
782
21e89b5f 783#if defined(HAS_SYSCALL) && !defined(HAS_SYSCALL_PROTO)
c45598c5 784EXTERN_C int syscall(int, ...);
2ef53570
JH		 785#endif
786
21e89b5f 787#if defined(HAS_USLEEP) && !defined(HAS_USLEEP_PROTO)
c45598c5 788EXTERN_C int usleep(unsigned int);
2ef53570
JH		 789#endif
790
1109a392
MHM		 791#ifdef PERL_CORE
792
793/* macros for correct constant construction */
794# if INTSIZE >= 2
795# define U16_CONST(x) ((U16)x##U)
796# else
797# define U16_CONST(x) ((U16)x##UL)
798# endif
799
800# if INTSIZE >= 4
801# define U32_CONST(x) ((U32)x##U)
802# else
803# define U32_CONST(x) ((U32)x##UL)
804# endif
805
806# ifdef HAS_QUAD
807# if INTSIZE >= 8
808# define U64_CONST(x) ((U64)x##U)
809# elif LONGSIZE >= 8
810# define U64_CONST(x) ((U64)x##UL)
811# elif QUADKIND == QUAD_IS_LONG_LONG
812# define U64_CONST(x) ((U64)x##ULL)
52865553
SH		 813# elif QUADKIND == QUAD_IS___INT64
814# define U64_CONST(x) ((U64)x##UI64)
1109a392
MHM		 815# else /* best guess we can make */
816# define U64_CONST(x) ((U64)x##UL)
817# endif
818# endif
819
820/* byte-swapping functions for big-/little-endian conversion */
821# define _swab_16_(x) ((U16)( \
822 (((U16)(x) & U16_CONST(0x00ff)) << 8) | \
823 (((U16)(x) & U16_CONST(0xff00)) >> 8) ))
824
825# define _swab_32_(x) ((U32)( \
826 (((U32)(x) & U32_CONST(0x000000ff)) << 24) | \
827 (((U32)(x) & U32_CONST(0x0000ff00)) << 8) | \
828 (((U32)(x) & U32_CONST(0x00ff0000)) >> 8) | \
829 (((U32)(x) & U32_CONST(0xff000000)) >> 24) ))
830
831# ifdef HAS_QUAD
832# define _swab_64_(x) ((U64)( \
833 (((U64)(x) & U64_CONST(0x00000000000000ff)) << 56) | \
834 (((U64)(x) & U64_CONST(0x000000000000ff00)) << 40) | \
835 (((U64)(x) & U64_CONST(0x0000000000ff0000)) << 24) | \
836 (((U64)(x) & U64_CONST(0x00000000ff000000)) << 8) | \
837 (((U64)(x) & U64_CONST(0x000000ff00000000)) >> 8) | \
838 (((U64)(x) & U64_CONST(0x0000ff0000000000)) >> 24) | \
839 (((U64)(x) & U64_CONST(0x00ff000000000000)) >> 40) | \
840 (((U64)(x) & U64_CONST(0xff00000000000000)) >> 56) ))
841# endif
842
9c17f24a
NC		 843/* The old value was hard coded at 1008. (4096-16) seems to be a bit faster,
844 at least on FreeBSD. YMMV, so experiment. */
845#ifndef PERL_ARENA_SIZE
846#define PERL_ARENA_SIZE 4080
847#endif
848
ccb2c8b8 849/* Maximum level of recursion */
2b9dff67
RGS		 850#ifndef PERL_SUB_DEPTH_WARN
851#define PERL_SUB_DEPTH_WARN 100
ccb2c8b8
RGS		 852#endif
853
1109a392
MHM		 854#endif /* PERL_CORE */
855
bdf3085f
NC		 856/* We no longer default to creating a new SV for GvSV.
857 Do this before embed. */
858#ifndef PERL_CREATE_GVSV
7459f06b
NC		 859# ifndef PERL_DONT_CREATE_GVSV
860# define PERL_DONT_CREATE_GVSV
861# endif
bdf3085f
NC		 862#endif
863
ca0c25f6
NC		 864#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
865#define PERL_USES_PL_PIDSTATUS
866#endif
867
739a0b84 868#if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(__SYMBIAN32__)
a62746fa
RGS		 869#define PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION
870#endif
871
c31fac66
GS		 872#define MEM_SIZE Size_t
873
1936d2a7
NC		 874/* Round all values passed to malloc up, by default to a multiple of
875 sizeof(size_t)
876*/
877#ifndef PERL_STRLEN_ROUNDUP_QUANTUM
878#define PERL_STRLEN_ROUNDUP_QUANTUM Size_t_size
879#endif
880
f1200559
WH		 881/* sv_grow() will expand strings by at least a certain percentage of
882 the previously *used* length to avoid excessive calls to realloc().
883 The default is 25% of the current length.
884*/
885#ifndef PERL_STRLEN_EXPAND_SHIFT
886# define PERL_STRLEN_EXPAND_SHIFT 2
887#endif
888
3800c318 889#if defined(STANDARD_C) && defined(I_STDDEF) && !defined(PERL_GCC_PEDANTIC)
51371543
GS		 890# include <stddef.h>
891# define STRUCT_OFFSET(s,m) offsetof(s,m)
892#else
893# define STRUCT_OFFSET(s,m) (Size_t)(&(((s *)0)->m))
d0b86e2f
BF		 894#endif
895
896/* ptrdiff_t is C11, so undef it under pedantic builds */
897#ifdef PERL_GCC_PEDANTIC
898# undef HAS_PTRDIFF_T
51371543
GS		 899#endif
900
9969cdde 901#ifndef __SYMBIAN32__
27da23d5
JH		 902# if defined(I_STRING) || defined(__cplusplus)
903# include <string.h>
904# else
905# include <strings.h>
906# endif
51371543
GS		 907#endif
908
55497cff 909/* This comes after <stdlib.h> so we don't try to change the standard
910 * library prototypes; we'll use our own in proto.h instead. */
03a14243 911
4633a7c4 912#ifdef MYMALLOC
86058a2d 913# ifdef PERL_POLLUTE_MALLOC
ee13e175 914# ifndef PERL_EXTMALLOC_DEF
86058a2d
GS		 915# define Perl_malloc malloc
916# define Perl_calloc calloc
917# define Perl_realloc realloc
918# define Perl_mfree free
ee13e175 919# endif
86058a2d
GS		 920# else
921# define EMBEDMYMALLOC /* for compatibility */
922# endif
827e134a 923
651b9576
GS		 924# define safemalloc Perl_malloc
925# define safecalloc Perl_calloc
926# define saferealloc Perl_realloc
927# define safefree Perl_mfree
22f7c9c9
JH		 928# define CHECK_MALLOC_TOO_LATE_FOR_(code) STMT_START { \
929 if (!PL_tainting && MallocCfg_ptr[MallocCfg_cfg_env_read]) \
930 code; \
931 } STMT_END
932# define CHECK_MALLOC_TOO_LATE_FOR(ch) \
933 CHECK_MALLOC_TOO_LATE_FOR_(MALLOC_TOO_LATE_FOR(ch))
934# define panic_write2(s) write(2, s, strlen(s))
935# define CHECK_MALLOC_TAINT(newval) \
936 CHECK_MALLOC_TOO_LATE_FOR_( \
937 if (newval) { \
acfd4d8e 938 PERL_UNUSED_RESULT(panic_write2("panic: tainting with $ENV{PERL_MALLOC_OPT}\n"));\
22f7c9c9 939 exit(1); })
22f7c9c9 940# define MALLOC_CHECK_TAINT(argc,argv,env) STMT_START { \
b0891165 941 if (doing_taint(argc,argv,env)) { \
22f7c9c9
JH		 942 MallocCfg_ptr[MallocCfg_skip_cfg_env] = 1; \
943 }} STMT_END;
f2517201
GS		 944#else /* MYMALLOC */
945# define safemalloc safesysmalloc
946# define safecalloc safesyscalloc
947# define saferealloc safesysrealloc
948# define safefree safesysfree
22f7c9c9
JH		 949# define CHECK_MALLOC_TOO_LATE_FOR(ch) ((void)0)
950# define CHECK_MALLOC_TAINT(newval) ((void)0)
951# define MALLOC_CHECK_TAINT(argc,argv,env)
55497cff 952#endif /* MYMALLOC */
4633a7c4 953
fe13d51d 954/* diag_listed_as: "-T" is on the #! line, it must also be used on the command line */
27da23d5 955#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)
22f7c9c9
JH		 956#define TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, "")
957#define MALLOC_TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, " with $ENV{PERL_MALLOC_OPT}")
958#define MALLOC_CHECK_TAINT2(argc,argv) MALLOC_CHECK_TAINT(argc,argv,NULL)
959
a0d0e21e
LW		 960#if !defined(HAS_STRCHR) && defined(HAS_INDEX) && !defined(strchr)
961#define strchr index
962#define strrchr rindex
963#endif
964
16d20bd9
AD		 965#ifdef I_MEMORY
966# include <memory.h>
967#endif
968
fe14fcc3 969#ifdef HAS_MEMCPY
85e6fe83 970# if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
fe14fcc3 971# ifndef memcpy
20ce7b12 972 extern char * memcpy (char*, char*, int);
ee0007ab
LW		 973# endif
974# endif
975#else
976# ifndef memcpy
977# ifdef HAS_BCOPY
978# define memcpy(d,s,l) bcopy(s,d,l)
979# else
980# define memcpy(d,s,l) my_bcopy(s,d,l)
981# endif
982# endif
983#endif /* HAS_MEMCPY */
fe14fcc3 984
ee0007ab 985#ifdef HAS_MEMSET
85e6fe83 986# if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
ee0007ab 987# ifndef memset
20ce7b12 988 extern char *memset (char*, int, int);
ee0007ab
LW		 989# endif
990# endif
ee0007ab 991#else
12ae5dfc 992# undef memset
fc36a67e 993# define memset(d,c,l) my_memset(d,c,l)
ee0007ab
LW		 994#endif /* HAS_MEMSET */
995
85e6fe83 996#if !defined(HAS_MEMMOVE) && !defined(memmove)
2304df62 997# if defined(HAS_BCOPY) && defined(HAS_SAFE_BCOPY)
79072805
LW		 998# define memmove(d,s,l) bcopy(s,d,l)
999# else
2304df62 1000# if defined(HAS_MEMCPY) && defined(HAS_SAFE_MEMCPY)
79072805 1001# define memmove(d,s,l) memcpy(d,s,l)
ee0007ab 1002# else
79072805 1003# define memmove(d,s,l) my_bcopy(s,d,l)
ee0007ab 1004# endif
352d5a3a 1005# endif
d9d8d8de 1006#endif
ee0007ab 1007
36477c24 1008#if defined(mips) && defined(ultrix) && !defined(__STDC__)
1009# undef HAS_MEMCMP
1010#endif
1011
1012#if defined(HAS_MEMCMP) && defined(HAS_SANE_MEMCMP)
85e6fe83 1013# if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
ee0007ab 1014# ifndef memcmp
20ce7b12 1015 extern int memcmp (char*, char*, int);
ee0007ab
LW		 1016# endif
1017# endif
1018#else
1019# ifndef memcmp
ecfc5424 1020# define memcmp my_memcmp
352d5a3a 1021# endif
36477c24 1022#endif /* HAS_MEMCMP && HAS_SANE_MEMCMP */
8d063cd8 1023
fc36a67e 1024#ifndef memzero
c635e13b 1025# ifdef HAS_MEMSET
1026# define memzero(d,l) memset(d,0,l)
79072805 1027# else
c635e13b 1028# ifdef HAS_BZERO
1029# define memzero(d,l) bzero(d,l)
79072805 1030# else
fc36a67e 1031# define memzero(d,l) my_bzero(d,l)
79072805
LW		 1032# endif
1033# endif
d9d8d8de 1034#endif
378cc40b 1035
2f42fcb0 1036#ifndef PERL_MICRO
0f27ced1
JH		 1037#ifndef memchr
1038# ifndef HAS_MEMCHR
1039# define memchr(s,c,n) ninstr((char*)(s), ((char*)(s)) + n, &(c), &(c) + 1)
1040# endif
1041#endif
2f42fcb0 1042#endif
0f27ced1 1043
36477c24 1044#ifndef HAS_BCMP
1045# ifndef bcmp
1046# define bcmp(s1,s2,l) memcmp(s1,s2,l)
79072805 1047# endif
36477c24 1048#endif /* !HAS_BCMP */
378cc40b 1049
ae986130 1050#ifdef I_NETINET_IN
79072805 1051# include <netinet/in.h>
ae986130
LW		 1052#endif
1053
28e8609d
JH		 1054#ifdef I_ARPA_INET
1055# include <arpa/inet.h>
1056#endif
1057
1aef975c 1058#ifdef I_SYS_STAT
84902520 1059# include <sys/stat.h>
1aef975c 1060#endif
79072805 1061
287a962e
JD		 1062/* Microsoft VC's sys/stat.h defines all S_Ixxx macros except S_IFIFO.
1063 This definition should ideally go into win32/win32.h, but S_IFIFO is
1064 used later here in perl.h before win32/win32.h is being included. */
1065#if !defined(S_IFIFO) && defined(_S_IFIFO)
1066# define S_IFIFO _S_IFIFO
1067#endif
1068
cc3315ba 1069/* The stat macros for Unisoft System V/88 (and derivatives
a0d0e21e
LW		 1070 like UTekV) are broken, sometimes giving false positives. Undefine
1071 them here and let the code below set them to proper values.
1072
1073 The ghs macro stands for GreenHills Software C-1.8.5 which
1074 is the C compiler for sysV88 and the various derivatives.
1075 This header file bug is corrected in gcc-2.5.8 and later versions.
1076 --Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94. */
1077
cc3315ba 1078#if defined(m88k) && defined(ghs)
79072805
LW		 1079# undef S_ISDIR
1080# undef S_ISCHR
1081# undef S_ISBLK
1082# undef S_ISREG
1083# undef S_ISFIFO
1084# undef S_ISLNK
ee0007ab 1085#endif
135863df 1086
663a0e37
LW		 1087#ifdef I_TIME
1088# include <time.h>
ffed7fef 1089#endif
663a0e37 1090
fe14fcc3 1091#ifdef I_SYS_TIME
85e6fe83 1092# ifdef I_SYS_TIME_KERNEL
663a0e37
LW		 1093# define KERNEL
1094# endif
1095# include <sys/time.h>
85e6fe83 1096# ifdef I_SYS_TIME_KERNEL
663a0e37
LW		 1097# undef KERNEL
1098# endif
a687059c 1099#endif
135863df 1100
55497cff 1101#if defined(HAS_TIMES) && defined(I_SYS_TIMES)
85e6fe83 1102# include <sys/times.h>
d9d8d8de 1103#endif
8d063cd8 1104
fe14fcc3 1105#if defined(HAS_STRERROR) && (!defined(HAS_MKDIR) || !defined(HAS_RMDIR))
79072805 1106# undef HAS_STRERROR
663a0e37
LW		 1107#endif
1108
1109#include <errno.h>
1e743fda 1110
acfe0abc 1111#if defined(WIN32) && defined(PERL_IMPLICIT_SYS)
b4748376
NIS		 1112# define WIN32SCK_IS_STDSCK /* don't pull in custom wsock layer */
1113#endif
1114
8cfab5ff 1115/* In Tru64 use the 4.4BSD struct msghdr, not the 4.3 one.
00f254e2 1116 * This is important for using IPv6.
8cfab5ff
JH		 1117 * For OSF/1 3.2, however, defining _SOCKADDR_LEN would be
1118 * a bad idea since it breaks send() and recv(). */
1119#if defined(__osf__) && defined(__alpha) && !defined(_SOCKADDR_LEN) && !defined(DEC_OSF1_3_X)
1120# define _SOCKADDR_LEN
1121#endif
1122
da70cfc6 1123#if defined(HAS_SOCKET) && !defined(WIN32) /* WIN32 handles sockets via win32.h */
1e743fda
JH		 1124# include <sys/socket.h>
1125# if defined(USE_SOCKS) && defined(I_SOCKS)
1126# if !defined(INCLUDE_PROTOTYPES)
1127# define INCLUDE_PROTOTYPES /* for <socks.h> */
1128# define PERL_SOCKS_NEED_PROTOTYPES
1129# endif
1130# include <socks.h>
1131# ifdef PERL_SOCKS_NEED_PROTOTYPES /* keep cpp space clean */
1132# undef INCLUDE_PROTOTYPES
1133# undef PERL_SOCKS_NEED_PROTOTYPES
ed6116ce 1134# endif
d460ef45 1135# endif
1e743fda 1136# ifdef I_NETDB
2986a63f
JH		 1137# ifdef NETWARE
1138# include<stdio.h>
1139# endif
1e743fda
JH		 1140# include <netdb.h>
1141# endif
1142# ifndef ENOTSOCK
1143# ifdef I_NET_ERRNO
1144# include <net/errno.h>
1145# endif
1146# endif
1147#endif
1148
fa0a29af 1149/* sockatmark() is so new (2001) that many places might have it hidden
29820b6d
MHM		 1150 * behind some -D_BLAH_BLAH_SOURCE guard. The __THROW magic is required
1151 * e.g. in Gentoo, see http://bugs.gentoo.org/show_bug.cgi?id=12605 */
fa0a29af 1152#if defined(HAS_SOCKATMARK) && !defined(HAS_SOCKATMARK_PROTO)
29820b6d
MHM		 1153# if defined(__THROW) && defined(__GLIBC__)
1154int sockatmark(int) __THROW;
1155# else
2ef53570 1156int sockatmark(int);
29820b6d 1157# endif
2ef53570
JH		 1158#endif
1159
7e827271 1160#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. */
45d3b546
JH		 1161EXTERN_C int fchdir(int);
1162EXTERN_C int flock(int, int);
1163EXTERN_C int fseeko(FILE *, off_t, int);
1164EXTERN_C off_t ftello(FILE *);
1165#endif
1166
7e827271 1167#if defined(__SUNPRO_CC) /* SUNWspro CC (C++) */
1ccb7c8d 1168EXTERN_C char *crypt(const char *, const char *);
7e827271 1169EXTERN_C char **environ;
1ccb7c8d
JH		 1170#endif
1171
83a6ff2e 1172#if defined(__cplusplus)
ce3470dc 1173# if defined(BSDish)
b91fbb93 1174EXTERN_C char **environ;
83a6ff2e 1175# elif defined(__CYGWIN__)
667e2948
SP		 1176EXTERN_C char *crypt(const char *, const char *);
1177#endif
83a6ff2e 1178#endif
667e2948 1179
1e743fda
JH		 1180#ifdef SETERRNO
1181# undef SETERRNO /* SOCKS might have defined this */
ed6116ce 1182#endif
f86702cc 1183
1184#ifdef VMS
1185# define SETERRNO(errcode,vmserrcode) \
1186 STMT_START { \
1187 set_errno(errcode); \
1188 set_vaxc_errno(vmserrcode); \
1189 } STMT_END
4ee39169
CS		 1190# define dSAVEDERRNO int saved_errno; unsigned saved_vms_errno
1191# define dSAVE_ERRNO int saved_errno = errno; unsigned saved_vms_errno = vaxc$errno
1192# define SAVE_ERRNO ( saved_errno = errno, saved_vms_errno = vaxc$errno )
1193# define RESTORE_ERRNO SETERRNO(saved_errno, saved_vms_errno)
1194
93189314
JH		 1195# define LIB_INVARG LIB$_INVARG
1196# define RMS_DIR RMS$_DIR
1197# define RMS_FAC RMS$_FAC
1198# define RMS_FEX RMS$_FEX
1199# define RMS_FNF RMS$_FNF
1200# define RMS_IFI RMS$_IFI
1201# define RMS_ISI RMS$_ISI
1202# define RMS_PRV RMS$_PRV
1203# define SS_ACCVIO SS$_ACCVIO
1204# define SS_DEVOFFLINE SS$_DEVOFFLINE
1205# define SS_IVCHAN SS$_IVCHAN
1206# define SS_NORMAL SS$_NORMAL
8a9f18be 1207# define SS_NOPRIV SS$_NOPRIV
748a9306 1208#else
93189314
JH		 1209# define LIB_INVARG 0
1210# define RMS_DIR 0
1211# define RMS_FAC 0
1212# define RMS_FEX 0
1213# define RMS_FNF 0
1214# define RMS_IFI 0
1215# define RMS_ISI 0
1216# define RMS_PRV 0
1217# define SS_ACCVIO 0
1218# define SS_DEVOFFLINE 0
1219# define SS_IVCHAN 0
1220# define SS_NORMAL 0
8a9f18be 1221# define SS_NOPRIV 0
748a9306 1222#endif
ed6116ce 1223
6ca940a9
TC		 1224#ifdef WIN32
1225# define dSAVEDERRNO int saved_errno; DWORD saved_win32_errno
1226# define dSAVE_ERRNO int saved_errno = errno; DWORD saved_win32_errno = GetLastError()
1227# define SAVE_ERRNO ( saved_errno = errno, saved_win32_errno = GetLastError() )
1228# define RESTORE_ERRNO ( errno = saved_errno, SetLastError(saved_win32_errno) )
1229#endif
1230
1231#ifdef OS2
1232# define dSAVEDERRNO int saved_errno; unsigned long saved_os2_errno
1233# define dSAVE_ERRNO int saved_errno = errno; unsigned long saved_os2_errno = Perl_rc
1234# define SAVE_ERRNO ( saved_errno = errno, saved_os2_errno = Perl_rc )
1235# define RESTORE_ERRNO ( errno = saved_errno, Perl_rc = saved_os2_errno )
1236#endif
1237
1238#ifndef SETERRNO
1239# define SETERRNO(errcode,vmserrcode) (errno = (errcode))
1240#endif
1241
1242#ifndef dSAVEDERRNO
1243# define dSAVEDERRNO int saved_errno
1244# define dSAVE_ERRNO int saved_errno = errno
1245# define SAVE_ERRNO (saved_errno = errno)
1246# define RESTORE_ERRNO (errno = saved_errno)
1247#endif
1248
f5fa9033 1249#define ERRSV GvSVn(PL_errgv)
dfd167e9
NC		 1250
1251#define CLEAR_ERRSV() STMT_START { \
1252 if (!GvSV(PL_errgv)) { \
1253 sv_setpvs(GvSV(gv_add_by_type(PL_errgv, SVt_PV)), ""); \
1254 } else if (SvREADONLY(GvSV(PL_errgv))) { \
1255 SvREFCNT_dec(GvSV(PL_errgv)); \
1256 GvSV(PL_errgv) = newSVpvs(""); \
1257 } else { \
1258 SV *const errsv = GvSV(PL_errgv); \
1259 sv_setpvs(errsv, ""); \
1260 if (SvMAGICAL(errsv)) { \
1261 mg_free(errsv); \
1262 } \
1263 SvPOK_only(errsv); \
1264 } \
1265 } STMT_END
1266
1267
414bf5ae
MHM		 1268#ifdef PERL_CORE
1269# define DEFSV (0 + GvSVn(PL_defgv))
55b5114f
FC		 1270# define DEFSV_set(sv) \
1271 (SvREFCNT_dec(GvSV(PL_defgv)), GvSV(PL_defgv) = SvREFCNT_inc(sv))
1272# define SAVE_DEFSV \
1273 ( \
1274 save_gp(PL_defgv, 0), \
1275 GvINTRO_off(PL_defgv), \
1276 SAVEGENERICSV(GvSV(PL_defgv)), \
1277 GvSV(PL_defgv) = NULL \
1278 )
414bf5ae
MHM		 1279#else
1280# define DEFSV GvSVn(PL_defgv)
55b5114f
FC		 1281# define DEFSV_set(sv) (GvSV(PL_defgv) = (sv))
1282# define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv))
414bf5ae 1283#endif
38a03e6e 1284
55497cff 1285#ifndef errno
5ff3f7a4
GS		 1286 extern int errno; /* ANSI allows errno to be an lvalue expr.
1287 * For example in multithreaded environments
1288 * something like this might happen:
1289 * extern int *_errno(void);
1290 * #define errno (*_errno()) */
d9d8d8de 1291#endif
663a0e37 1292
7e996671
KW		 1293#define UNKNOWN_ERRNO_MSG "(unknown)"
1294
2304df62 1295#ifdef HAS_STRERROR
b3e384bf 1296# ifndef DONT_DECLARE_STD
a0d0e21e 1297# ifdef VMS
20ce7b12 1298 char *strerror (int,...);
a0d0e21e 1299# else
20ce7b12 1300 char *strerror (int);
a0d0e21e 1301# endif
b3e384bf
KW		 1302# endif
1303# ifndef Strerror
1304# define Strerror strerror
1305# endif
2304df62
AD		 1306#else
1307# ifdef HAS_SYS_ERRLIST
79072805
LW		 1308 extern int sys_nerr;
1309 extern char *sys_errlist[];
2304df62
AD		 1310# ifndef Strerror
1311# define Strerror(e) \
7e996671 1312 ((e) < 0 || (e) >= sys_nerr ? UNKNOWN_ERRNO_MSG : sys_errlist[e])
2304df62 1313# endif
79072805 1314# endif
35c8bce7 1315#endif
663a0e37 1316
2304df62 1317#ifdef I_SYS_IOCTL
79072805
LW		 1318# ifndef _IOCTL_
1319# include <sys/ioctl.h>
1320# endif
a687059c
LW		 1321#endif
1322
ee0007ab 1323#if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
79072805
LW		 1324# ifdef HAS_SOCKETPAIR
1325# undef HAS_SOCKETPAIR
1326# endif
2304df62
AD		 1327# ifdef I_NDBM
1328# undef I_NDBM
79072805 1329# endif
a687059c
LW		 1330#endif
1331
02fc2eee
NC		 1332#ifndef HAS_SOCKETPAIR
1333# ifdef HAS_SOCKET
1334# define socketpair Perl_my_socketpair
1335# endif
1336#endif
1337
a687059c 1338#if INTSIZE == 2
79072805
LW		 1339# define htoni htons
1340# define ntohi ntohs
a687059c 1341#else
79072805
LW		 1342# define htoni htonl
1343# define ntohi ntohl
a687059c
LW		 1344#endif
1345
a0d0e21e 1346/* Configure already sets Direntry_t */
35c8bce7 1347#if defined(I_DIRENT)
663a0e37 1348# include <dirent.h>
ae986130 1349#else
fe14fcc3 1350# ifdef I_SYS_NDIR
79a0689e 1351# include <sys/ndir.h>
663a0e37 1352# else
fe14fcc3 1353# ifdef I_SYS_DIR
79a0689e
LW		 1354# ifdef hp9000s500
1355# include <ndir.h> /* may be wrong in the future */
1356# else
1357# include <sys/dir.h>
1358# endif
663a0e37
LW		 1359# endif
1360# endif
4633a7c4 1361#endif
a687059c 1362
c623bd54
LW		 1363/*
1364 * The following gobbledygook brought to you on behalf of __STDC__.
1365 * (I could just use #ifndef __STDC__, but this is more bulletproof
1366 * in the face of half-implementations.)
1367 */
1368
21e89b5f 1369#if defined(I_SYSMODE)
ca6e1c26
JH		 1370#include <sys/mode.h>
1371#endif
1372
c623bd54
LW		 1373#ifndef S_IFMT
1374# ifdef _S_IFMT
1375# define S_IFMT _S_IFMT
1376# else
1377# define S_IFMT 0170000
1378# endif
1379#endif
1380
1381#ifndef S_ISDIR
1382# define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
1383#endif
1384
1385#ifndef S_ISCHR
1386# define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
1387#endif
1388
1389#ifndef S_ISBLK
fe14fcc3
LW		 1390# ifdef S_IFBLK
1391# define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
1392# else
1393# define S_ISBLK(m) (0)
1394# endif
c623bd54
LW		 1395#endif
1396
1397#ifndef S_ISREG
1398# define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
1399#endif
1400
1401#ifndef S_ISFIFO
fe14fcc3
LW		 1402# ifdef S_IFIFO
1403# define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
1404# else
1405# define S_ISFIFO(m) (0)
1406# endif
c623bd54
LW		 1407#endif
1408
1409#ifndef S_ISLNK
1410# ifdef _S_ISLNK
1411# define S_ISLNK(m) _S_ISLNK(m)
1412# else
1413# ifdef _S_IFLNK
1414# define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
1415# else
1416# ifdef S_IFLNK
1417# define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
1418# else
1419# define S_ISLNK(m) (0)
1420# endif
1421# endif
1422# endif
1423#endif
1424
1425#ifndef S_ISSOCK
1426# ifdef _S_ISSOCK
1427# define S_ISSOCK(m) _S_ISSOCK(m)
1428# else
1429# ifdef _S_IFSOCK
1430# define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
1431# else
1432# ifdef S_IFSOCK
1433# define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
1434# else
1435# define S_ISSOCK(m) (0)
1436# endif
1437# endif
1438# endif
1439#endif
1440
1441#ifndef S_IRUSR
1442# ifdef S_IREAD
1443# define S_IRUSR S_IREAD
1444# define S_IWUSR S_IWRITE
1445# define S_IXUSR S_IEXEC
1446# else
1447# define S_IRUSR 0400
1448# define S_IWUSR 0200
1449# define S_IXUSR 0100
1450# endif
fac7cdfc
JS		 1451#endif
1452
1453#ifndef S_IRGRP
1454# ifdef S_IRUSR
1455# define S_IRGRP (S_IRUSR>>3)
1456# define S_IWGRP (S_IWUSR>>3)
1457# define S_IXGRP (S_IXUSR>>3)
1458# else
1459# define S_IRGRP 0040
1460# define S_IWGRP 0020
1461# define S_IXGRP 0010
1462# endif
1463#endif
1464
1465#ifndef S_IROTH
1466# ifdef S_IRUSR
1467# define S_IROTH (S_IRUSR>>6)
1468# define S_IWOTH (S_IWUSR>>6)
1469# define S_IXOTH (S_IXUSR>>6)
1470# else
1471# define S_IROTH 0040
1472# define S_IWOTH 0020
1473# define S_IXOTH 0010
1474# endif
c623bd54
LW		 1475#endif
1476
1477#ifndef S_ISUID
1478# define S_ISUID 04000
1479#endif
1480
1481#ifndef S_ISGID
1482# define S_ISGID 02000
1483#endif
1484
ca6e1c26
JH		 1485#ifndef S_IRWXU
1486# define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR)
d460ef45 1487#endif
ca6e1c26
JH		 1488
1489#ifndef S_IRWXG
1490# define S_IRWXG (S_IRGRP|S_IWGRP|S_IXGRP)
d460ef45 1491#endif
ca6e1c26
JH		 1492
1493#ifndef S_IRWXO
1494# define S_IRWXO (S_IROTH|S_IWOTH|S_IXOTH)
d460ef45 1495#endif
ca6e1c26 1496
b6c36746 1497/* Haiku R1 seems to define S_IREAD and S_IWRITE in <posix/fcntl.h>
c21fb2b8
JH		 1498 * which would get included through <sys/file.h >, but that is 3000
1499 * lines in the future. --jhi */
1500
b6c36746 1501#if !defined(S_IREAD) && !defined(__HAIKU__)
ca6e1c26
JH		 1502# define S_IREAD S_IRUSR
1503#endif
1504
b6c36746 1505#if !defined(S_IWRITE) && !defined(__HAIKU__)
ca6e1c26
JH		 1506# define S_IWRITE S_IWUSR
1507#endif
1508
1509#ifndef S_IEXEC
1510# define S_IEXEC S_IXUSR
1511#endif
1512
a0d0e21e 1513#if defined(cray) || defined(gould) || defined(i860) || defined(pyr)
45d8adaa
LW		 1514# define SLOPPYDIVIDE
1515#endif
1516
748a9306
LW		 1517#ifdef UV
1518#undef UV
1519#endif
1520
ce582cee
NC		 1521/* For the times when you want the return value of sprintf, and you want it
1522 to be the length. Can't have a thread variable passed in, because C89 has
1523 no varargs macros.
1524*/
1525#ifdef SPRINTF_RETURNS_STRLEN
1526# define my_sprintf sprintf
1527#else
1528# define my_sprintf Perl_my_sprintf
1529#endif
1530
5b692037
JH		 1531/*
1532 * If we have v?snprintf() and the C99 variadic macros, we can just
1533 * use just the v?snprintf(). It is nice to try to trap the buffer
1534 * overflow, however, so if we are DEBUGGING, and we cannot use the
e5afc1ae
DD		 1535 * gcc statement expressions, then use the function wrappers which try
1536 * to trap the overflow. If we can use the gcc statement expressions,
1537 * we can try that even with the version that uses the C99 variadic
1538 * macros.
5b692037
JH		 1539 */
1540
1208b3dd
JH		 1541/* Note that we do not check against snprintf()/vsnprintf() returning
1542 * negative values because that is non-standard behaviour and we use
1543 * snprintf/vsnprintf only iff HAS_VSNPRINTF has been defined, and
1544 * that should be true only if the snprintf()/vsnprintf() are true
1545 * to the standard. */
1546
e8549682
JH		 1547#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
1548
dfeee9b1 1549#if defined(HAS_SNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
5b692037 1550# ifdef PERL_USE_GCC_BRACE_GROUPS
e8549682 1551# define my_snprintf(buffer, max, ...) ({ int len = snprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, snprintf); len; })
1208b3dd 1552# define PERL_MY_SNPRINTF_GUARDED
5b692037 1553# else
e8549682 1554# define my_snprintf(buffer, max, ...) snprintf(buffer, max, __VA_ARGS__)
5b692037
JH		 1555# endif
1556#else
1557# define my_snprintf Perl_my_snprintf
1208b3dd 1558# define PERL_MY_SNPRINTF_GUARDED
5b692037
JH		 1559#endif
1560
dfeee9b1 1561#if defined(HAS_VSNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
5b692037 1562# ifdef PERL_USE_GCC_BRACE_GROUPS
e8549682 1563# define my_vsnprintf(buffer, max, ...) ({ int len = vsnprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, vsnprintf); len; })
1208b3dd 1564# define PERL_MY_VSNPRINTF_GUARDED
5b692037 1565# else
e8549682 1566# define my_vsnprintf(buffer, max, ...) vsnprintf(buffer, max, __VA_ARGS__)
5b692037
JH		 1567# endif
1568#else
1569# define my_vsnprintf Perl_my_vsnprintf
1208b3dd 1570# define PERL_MY_VSNPRINTF_GUARDED
5b692037 1571#endif
d9fad198 1572
e8549682
JH		 1573/* You will definitely need to use the PERL_MY_SNPRINTF_POST_GUARD()
1574 * or PERL_MY_VSNPRINTF_POST_GUARD() if you otherwise decide to ignore
1575 * the result of my_snprintf() or my_vsnprintf(). (No, you should not
1576 * completely ignore it: otherwise you cannot know whether your output
1577 * was too long.)
1578 *
1579 * int len = my_sprintf(buf, max, ...);
1580 * PERL_MY_SNPRINTF_POST_GUARD(len, max);
1581 *
1582 * The trick is that in certain platforms [a] the my_sprintf() already
1583 * contains the sanity check, while in certain platforms [b] it needs
1584 * to be done as a separate step. The POST_GUARD is that step-- in [a]
1585 * platforms the POST_GUARD actually does nothing since the check has
1586 * already been done. Watch out for the max being the same in both calls.
1587 *
1588 * If you actually use the snprintf/vsnprintf return value already,
1589 * you assumedly are checking its validity somehow. But you can
1590 * insert the POST_GUARD() also in that case. */
1591
1592#ifndef PERL_MY_SNPRINTF_GUARDED
1593# define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, snprintf)
1594#else
1595# define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
1596#endif
1597
1598#ifndef PERL_MY_VSNPRINTF_GUARDED
1599# define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, vsnprintf)
1600#else
1601# define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
1602#endif
1603
a6cc4119
SP		 1604#ifdef HAS_STRLCAT
1605# define my_strlcat strlcat
1606#else
1607# define my_strlcat Perl_my_strlcat
1608#endif
1609
1610#ifdef HAS_STRLCPY
1611# define my_strlcpy strlcpy
1612#else
1613# define my_strlcpy Perl_my_strlcpy
1614#endif
1615
05f13f53 1616/*
27d4fb96 1617 The IV type is supposed to be long enough to hold any integral
1618 value or a pointer.
1619 --Andy Dougherty August 1996
1620*/
1621
a22e52b9
JH		 1622typedef IVTYPE IV;
1623typedef UVTYPE UV;
8175356b 1624
10cc9d2a 1625#if defined(USE_64_BIT_INT) && defined(HAS_QUAD)
6b8eaf93 1626# if QUADKIND == QUAD_IS_INT64_T && defined(INT64_MAX)
5ff3f7a4
GS		 1627# define IV_MAX INT64_MAX
1628# define IV_MIN INT64_MIN
1629# define UV_MAX UINT64_MAX
cae7ae48
JH		 1630# ifndef UINT64_MIN
1631# define UINT64_MIN 0
1632# endif
5ff3f7a4
GS		 1633# define UV_MIN UINT64_MIN
1634# else
1635# define IV_MAX PERL_QUAD_MAX
1636# define IV_MIN PERL_QUAD_MIN
1637# define UV_MAX PERL_UQUAD_MAX
1638# define UV_MIN PERL_UQUAD_MIN
1639# endif
cf2093f6
JH		 1640# define IV_IS_QUAD
1641# define UV_IS_QUAD
79072805 1642#else
8175356b 1643# if defined(INT32_MAX) && IVSIZE == 4
5ff3f7a4
GS		 1644# define IV_MAX INT32_MAX
1645# define IV_MIN INT32_MIN
716026f9
DL		 1646# ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
1647# define UV_MAX UINT32_MAX
1648# else
1649# define UV_MAX 4294967295U
1650# endif
cae7ae48
JH		 1651# ifndef UINT32_MIN
1652# define UINT32_MIN 0
1653# endif
5ff3f7a4
GS		 1654# define UV_MIN UINT32_MIN
1655# else
1656# define IV_MAX PERL_LONG_MAX
1657# define IV_MIN PERL_LONG_MIN
1658# define UV_MAX PERL_ULONG_MAX
1659# define UV_MIN PERL_ULONG_MIN
1660# endif
8175356b 1661# if IVSIZE == 8
cf2093f6
JH		 1662# define IV_IS_QUAD
1663# define UV_IS_QUAD
de1c2614
JH		 1664# ifndef HAS_QUAD
1665# define HAS_QUAD
1666# endif
cf2093f6
JH		 1667# else
1668# undef IV_IS_QUAD
1669# undef UV_IS_QUAD
9ea40801 1670#if !defined(PERL_CORE) || defined(USING_MSVC6)
e25d460c
NC		 1671/* We think that removing this decade-old undef this will cause too much
1672 breakage on CPAN for too little gain. (See RT #119753)
9ea40801
SH		 1673 However, we do need HAS_QUAD in the core for use by the drand48 code,
1674 but not for Win32 VC6 because it has poor __int64 support. */
cb4b14d5 1675# undef HAS_QUAD
e25d460c 1676#endif
cf2093f6 1677# endif
79072805 1678#endif
d7d93a81 1679
6313e544
JH		 1680#define Size_t_MAX (~(Size_t)0)
1681#define SSize_t_MAX (SSize_t)(~(Size_t)0 >> 1)
9a543cee 1682
cae7ae48 1683#define IV_DIG (BIT_DIGITS(IVSIZE * 8))
22ec83e3 1684#define UV_DIG (BIT_DIGITS(UVSIZE * 8))
56431972 1685
28e5dec8 1686#ifndef NO_PERL_PRESERVE_IVUV
f5c03d33 1687#define PERL_PRESERVE_IVUV /* We like our integers to stay integers. */
28e5dec8
JH		 1688#endif
1689
d460ef45 1690/*
26bb67e2
JH		 1691 * The macros INT2PTR and NUM2PTR are (despite their names)
1692 * bi-directional: they will convert int/float to or from pointers.
1693 * However the conversion to int/float are named explicitly:
1694 * PTR2IV, PTR2UV, PTR2NV.
1695 *
1696 * For int conversions we do not need two casts if pointers are
1697 * the same size as IV and UV. Otherwise we need an explicit
1698 * cast (PTRV) to avoid compiler warnings.
1699 */
56431972
RB		 1700#if (IVSIZE == PTRSIZE) && (UVSIZE == PTRSIZE)
1701# define PTRV UV
1702# define INT2PTR(any,d) (any)(d)
1703#else
d460ef45 1704# if PTRSIZE == LONGSIZE
56431972 1705# define PTRV unsigned long
e91e3b10 1706# define PTR2ul(p) (unsigned long)(p)
42718184 1707# else
56431972 1708# define PTRV unsigned
42718184 1709# endif
e91e3b10
RB		 1710#endif
1711
1712#ifndef INT2PTR
56431972 1713# define INT2PTR(any,d) (any)(PTRV)(d)
42718184 1714#endif
e91e3b10
RB		 1715
1716#ifndef PTR2ul
1717# define PTR2ul(p) INT2PTR(unsigned long,p)
1718#endif
1719
56431972
RB		 1720#define NUM2PTR(any,d) (any)(PTRV)(d)
1721#define PTR2IV(p) INT2PTR(IV,p)
1722#define PTR2UV(p) INT2PTR(UV,p)
1723#define PTR2NV(p) NUM2PTR(NV,p)
e91e3b10 1724#define PTR2nat(p) (PTRV)(p) /* pointer to integer of PTRSIZE */
d460ef45 1725
8141890a
JH		 1726/* According to strict ANSI C89 one cannot freely cast between
1727 * data pointers and function (code) pointers. There are at least
1728 * two ways around this. One (used below) is to do two casts,
1729 * first the other pointer to an (unsigned) integer, and then
1730 * the integer to the other pointer. The other way would be
1731 * to use unions to "overlay" the pointers. For an example of
1732 * the latter technique, see union dirpu in struct xpvio in sv.h.
1733 * The only feasible use is probably temporarily storing
1734 * function pointers in a data pointer (such as a void pointer). */
1735
e91e3b10
RB		 1736#define DPTR2FPTR(t,p) ((t)PTR2nat(p)) /* data pointer to function pointer */
1737#define FPTR2DPTR(t,p) ((t)PTR2nat(p)) /* function pointer to data pointer */
8141890a 1738
65202027 1739#ifdef USE_LONG_DOUBLE
1048ea30
JH		 1740# if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE == DOUBLESIZE
1741# define LONG_DOUBLE_EQUALS_DOUBLE
1742# endif
68d4903c 1743# if !(defined(HAS_LONG_DOUBLE) && (LONG_DOUBLESIZE > DOUBLESIZE))
2d4389e4 1744# undef USE_LONG_DOUBLE /* Ouch! */
65202027
DS		 1745# endif
1746#endif
1747
2d4389e4
JH		 1748#ifdef OVR_DBL_DIG
1749/* Use an overridden DBL_DIG */
1750# ifdef DBL_DIG
1751# undef DBL_DIG
1752# endif
1753# define DBL_DIG OVR_DBL_DIG
1754#else
1755/* The following is all to get DBL_DIG, in order to pick a nice
205f51d8
AS		 1756 default value for printing floating point numbers in Gconvert
1757 (see config.h). (It also has other uses, such as figuring out if
1758 a given precision of printing can be done with a double instead of
1759 a long double - Allen).
2d4389e4
JH		 1760*/
1761#ifdef I_LIMITS
1762#include <limits.h>
1763#endif
1764#ifdef I_FLOAT
1765#include <float.h>
1766#endif
1767#ifndef HAS_DBL_DIG
1768#define DBL_DIG 15 /* A guess that works lots of places */
1769#endif
1770#endif
1771
1772#ifdef OVR_LDBL_DIG
1773/* Use an overridden LDBL_DIG */
1774# ifdef LDBL_DIG
1775# undef LDBL_DIG
1776# endif
1777# define LDBL_DIG OVR_LDBL_DIG
1778#else
1779/* The following is all to get LDBL_DIG, in order to pick a nice
1780 default value for printing floating point numbers in Gconvert.
1781 (see config.h)
1782*/
68d4903c
JH		 1783# ifdef I_LIMITS
1784# include <limits.h>
1785# endif
1786# ifdef I_FLOAT
1787# include <float.h>
1788# endif
1789# ifndef HAS_LDBL_DIG
1790# if LONG_DOUBLESIZE == 10
1791# define LDBL_DIG 18 /* assume IEEE */
1792# else
1793# if LONG_DOUBLESIZE == 12
1794# define LDBL_DIG 18 /* gcc? */
1795# else
1796# if LONG_DOUBLESIZE == 16
1797# define LDBL_DIG 33 /* assume IEEE */
1798# else
1799# if LONG_DOUBLESIZE == DOUBLESIZE
1800# define LDBL_DIG DBL_DIG /* bummer */
1801# endif
1802# endif
1803# endif
1804# endif
1805# endif
2d4389e4
JH		 1806#endif
1807
20f6aaab
AS		 1808/*
1809 * This is for making sure we have a good DBL_MAX value, if possible,
1810 * either for usage as NV_MAX or for usage in figuring out if we can
1811 * fit a given long double into a double, if bug-fixing makes it
1812 * necessary to do so. - Allen <allens@cpan.org>
1813 */
1814
205f51d8
AS		 1815#ifdef I_LIMITS
1816# include <limits.h>
20f6aaab
AS		 1817#endif
1818
205f51d8
AS		 1819#ifdef I_VALUES
1820# if !(defined(DBL_MIN) && defined(DBL_MAX) && defined(I_LIMITS))
1821# include <values.h>
1822# if defined(MAXDOUBLE) && !defined(DBL_MAX)
1823# define DBL_MAX MAXDOUBLE
1824# endif
1825# if defined(MINDOUBLE) && !defined(DBL_MIN)
1826# define DBL_MIN MINDOUBLE
1827# endif
1828# endif
1829#endif /* defined(I_VALUES) */
1830
a22e52b9 1831typedef NVTYPE NV;
8175356b 1832
792d8dab
JH		 1833#ifdef I_IEEEFP
1834# include <ieeefp.h>
1835#endif
923fc586 1836
65202027 1837#ifdef USE_LONG_DOUBLE
923fc586
JH		 1838# ifdef I_SUNMATH
1839# include <sunmath.h>
1840# endif
2d4389e4 1841# define NV_DIG LDBL_DIG
d6c14000
JH		 1842# ifdef LDBL_MANT_DIG
1843# define NV_MANT_DIG LDBL_MANT_DIG
1844# endif
06fc1729
JH		 1845# ifdef LDBL_MIN
1846# define NV_MIN LDBL_MIN
1847# endif
1848# ifdef LDBL_MAX
1849# define NV_MAX LDBL_MAX
1850# endif
40bca5ae
JH		 1851# ifdef LDBL_MIN_EXP
1852# define NV_MIN_EXP LDBL_MIN_EXP
1853# endif
1854# ifdef LDBL_MAX_EXP
1855# define NV_MAX_EXP LDBL_MAX_EXP
1856# endif
06fc1729
JH		 1857# ifdef LDBL_MIN_10_EXP
1858# define NV_MIN_10_EXP LDBL_MIN_10_EXP
1859# endif
1860# ifdef LDBL_MAX_10_EXP
1861# define NV_MAX_10_EXP LDBL_MAX_10_EXP
1862# endif
1863# ifdef LDBL_EPSILON
1864# define NV_EPSILON LDBL_EPSILON
1865# endif
f4a14a62
JH		 1866# ifdef LDBL_MAX
1867# define NV_MAX LDBL_MAX
20f6aaab 1868/* Having LDBL_MAX doesn't necessarily mean that we have LDBL_MIN... -Allen */
f4a14a62
JH		 1869# else
1870# ifdef HUGE_VALL
1871# define NV_MAX HUGE_VALL
1872# else
1873# ifdef HUGE_VAL
1874# define NV_MAX ((NV)HUGE_VAL)
1875# endif
1876# endif
1877# endif
68d4903c 1878# ifdef HAS_SQRTL
68d4903c
JH		 1879# define Perl_cos cosl
1880# define Perl_sin sinl
1881# define Perl_sqrt sqrtl
1882# define Perl_exp expl
1883# define Perl_log logl
1884# define Perl_atan2 atan2l
1885# define Perl_pow powl
1886# define Perl_floor floorl
1bbae031 1887# define Perl_ceil ceill
68d4903c
JH		 1888# define Perl_fmod fmodl
1889# endif
a3540c92
JH		 1890/* e.g. libsunmath doesn't have modfl and frexpl as of mid-March 2000 */
1891# ifdef HAS_MODFL
1892# define Perl_modf(x,y) modfl(x,y)
51997bc3
NC		 1893/* eg glibc 2.2 series seems to provide modfl on ppc and arm, but has no
1894 prototype in <math.h> */
1895# ifndef HAS_MODFL_PROTO
a221a8a5 1896EXTERN_C long double modfl(long double, long double *);
51997bc3 1897# endif
03476e8e
JH		 1898# else
1899# if defined(HAS_AINTL) && defined(HAS_COPYSIGNL)
55954f19 1900 extern long double Perl_my_modfl(long double x, long double *ip);
03476e8e
JH		 1901# define Perl_modf(x,y) Perl_my_modfl(x,y)
1902# endif
a3540c92
JH		 1903# endif
1904# ifdef HAS_FREXPL
dff3e0b8 1905# define Perl_frexp(x,y) frexpl(x,y)
03476e8e
JH		 1906# else
1907# if defined(HAS_ILOGBL) && defined(HAS_SCALBNL)
55954f19 1908 extern long double Perl_my_frexpl(long double x, int *e);
03476e8e
JH		 1909# define Perl_frexp(x,y) Perl_my_frexpl(x,y)
1910# endif
a3540c92 1911# endif
98181445
JH		 1912# ifdef HAS_LDEXPL
1913# define Perl_ldexp(x, y) ldexpl(x,y)
1914# else
1915# if defined(HAS_SCALBNL) && FLT_RADIX == 2
1916# define Perl_ldexp(x,y) scalbnl(x,y)
1917# endif
1918# endif
38dbb4c5 1919# ifndef Perl_isnan
758a5d79
JH		 1920# ifdef HAS_ISNANL
1921# define Perl_isnan(x) isnanl(x)
1922# endif
1923# endif
1924# ifndef Perl_isinf
d06fe7d1
JH		 1925# if defined(HAS_ISFINITEL) && defined(Perl_isnan)
1926# define Perl_isinf(x) !(isfinitel(x)||Perl_isnan(x))
1927# endif
1928# endif
1929# ifndef Perl_isinf
1930# if defined(HAS_FINITEL) && defined(Perl_isnan)
758a5d79 1931# define Perl_isinf(x) !(finitel(x)||Perl_isnan(x))
a3540c92
JH		 1932# endif
1933# endif
4efd38a4
JH		 1934# ifndef Perl_isfinite
1935# ifdef HAS_ISFINITEL
1936# define Perl_isfinite(x) isfinitel(x)
1937# elif defined(HAS_FINITEL)
1938# define Perl_isfinite(x) finitel(x)
1939# endif
1940# endif
65202027 1941#else
2d4389e4 1942# define NV_DIG DBL_DIG
d6c14000
JH		 1943# ifdef DBL_MANT_DIG
1944# define NV_MANT_DIG DBL_MANT_DIG
1945# endif
06fc1729
JH		 1946# ifdef DBL_MIN
1947# define NV_MIN DBL_MIN
1948# endif
1949# ifdef DBL_MAX
1950# define NV_MAX DBL_MAX
1951# endif
40bca5ae
JH		 1952# ifdef DBL_MIN_EXP
1953# define NV_MIN_EXP DBL_MIN_EXP
1954# endif
1955# ifdef DBL_MAX_EXP
1956# define NV_MAX_EXP DBL_MAX_EXP
1957# endif
06fc1729
JH		 1958# ifdef DBL_MIN_10_EXP
1959# define NV_MIN_10_EXP DBL_MIN_10_EXP
1960# endif
1961# ifdef DBL_MAX_10_EXP
1962# define NV_MAX_10_EXP DBL_MAX_10_EXP
1963# endif
1964# ifdef DBL_EPSILON
1965# define NV_EPSILON DBL_EPSILON
1966# endif
205f51d8 1967# ifdef DBL_MAX /* XXX Does DBL_MAX imply having DBL_MIN? */
f4a14a62
JH		 1968# define NV_MAX DBL_MAX
1969# define NV_MIN DBL_MIN
1970# else
1971# ifdef HUGE_VAL
1972# define NV_MAX HUGE_VAL
1973# endif
1974# endif
65202027
DS		 1975# define Perl_cos cos
1976# define Perl_sin sin
1977# define Perl_sqrt sqrt
1978# define Perl_exp exp
1979# define Perl_log log
1980# define Perl_atan2 atan2
1981# define Perl_pow pow
1982# define Perl_floor floor
1bbae031 1983# define Perl_ceil ceil
65202027 1984# define Perl_fmod fmod
a3540c92 1985# define Perl_modf(x,y) modf(x,y)
dff3e0b8 1986# define Perl_frexp(x,y) frexp(x,y)
98181445 1987# define Perl_ldexp(x,y) ldexp(x,y)
758a5d79
JH		 1988#endif
1989
1990/* rumor has it that Win32 has _fpclass() */
1991
205f51d8
AS		 1992/* SGI has fpclassl... but not with the same result values,
1993 * and it's via a typedef (not via #define), so will need to redo Configure
1994 * to use. Not worth the trouble, IMO, at least until the below is used
1995 * more places. Also has fp_class_l, BTW, via fp_class.h. Feel free to check
1996 * with me for the SGI manpages, SGI testing, etcetera, if you want to
1997 * try getting this to work with IRIX. - Allen <allens@cpan.org> */
1998
758a5d79
JH		 1999#if !defined(Perl_fp_class) && (defined(HAS_FPCLASS)||defined(HAS_FPCLASSL))
2000# ifdef I_IEEFP
2001# include <ieeefp.h>
2002# endif
2003# ifdef I_FP
2004# include <fp.h>
2005# endif
2006# if defined(USE_LONG_DOUBLE) && defined(HAS_FPCLASSL)
2007# define Perl_fp_class() fpclassl(x)
2008# else
2009# define Perl_fp_class() fpclass(x)
2010# endif
2011# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_CLASS_SNAN)
2012# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_CLASS_QNAN)
2013# define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_CLASS_SNAN||Perl_fp_class(x)==FP_CLASS_QNAN)
2014# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_CLASS_NINF)
2015# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_CLASS_PINF)
2016# define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_CLASS_NINF||Perl_fp_class(x)==FP_CLASS_PINF)
2017# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_CLASS_NNORM)
2018# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_CLASS_PNORM)
2019# define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_CLASS_NNORM||Perl_fp_class(x)==FP_CLASS_PNORM)
2020# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_CLASS_NDENORM)
2021# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_CLASS_PDENORM)
2022# define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_CLASS_NDENORM||Perl_fp_class(x)==FP_CLASS_PDENORM)
2023# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_CLASS_NZERO)
2024# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_CLASS_PZERO)
2025# define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_CLASS_NZERO||Perl_fp_class(x)==FP_CLASS_PZERO)
2026#endif
2027
21e89b5f 2028#if !defined(Perl_fp_class) && defined(HAS_FP_CLASS)
758a5d79
JH		 2029# include <math.h>
2030# if !defined(FP_SNAN) && defined(I_FP_CLASS)
2031# include <fp_class.h>
2032# endif
2033# define Perl_fp_class(x) fp_class(x)
2034# define Perl_fp_class_snan(x) (fp_class(x)==FP_SNAN)
2035# define Perl_fp_class_qnan(x) (fp_class(x)==FP_QNAN)
2036# define Perl_fp_class_nan(x) (fp_class(x)==FP_SNAN||fp_class(x)==FP_QNAN)
2037# define Perl_fp_class_ninf(x) (fp_class(x)==FP_NEG_INF)
2038# define Perl_fp_class_pinf(x) (fp_class(x)==FP_POS_INF)
2039# define Perl_fp_class_inf(x) (fp_class(x)==FP_NEG_INF||fp_class(x)==FP_POS_INF)
2040# define Perl_fp_class_nnorm(x) (fp_class(x)==FP_NEG_NORM)
2041# define Perl_fp_class_pnorm(x) (fp_class(x)==FP_POS_NORM)
2042# define Perl_fp_class_norm(x) (fp_class(x)==FP_NEG_NORM||fp_class(x)==FP_POS_NORM)
2043# define Perl_fp_class_ndenorm(x) (fp_class(x)==FP_NEG_DENORM)
2044# define Perl_fp_class_pdenorm(x) (fp_class(x)==FP_POS_DENORM)
2045# define Perl_fp_class_denorm(x) (fp_class(x)==FP_NEG_DENORM||fp_class(x)==FP_POS_DENORM)
2046# define Perl_fp_class_nzero(x) (fp_class(x)==FP_NEG_ZERO)
2047# define Perl_fp_class_pzero(x) (fp_class(x)==FP_POS_ZERO)
2048# define Perl_fp_class_zero(x) (fp_class(x)==FP_NEG_ZERO||fp_class(x)==FP_POS_ZERO)
2049#endif
2050
2051#if !defined(Perl_fp_class) && defined(HAS_FPCLASSIFY)
2052# include <math.h>
2053# define Perl_fp_class(x) fpclassify(x)
38dbb4c5 2054# define Perl_fp_class_nan(x) (fp_classify(x)==FP_SNAN||fp_classify(x)==FP_QNAN)
758a5d79
JH		 2055# define Perl_fp_class_inf(x) (fp_classify(x)==FP_INFINITE)
2056# define Perl_fp_class_norm(x) (fp_classify(x)==FP_NORMAL)
2057# define Perl_fp_class_denorm(x) (fp_classify(x)==FP_SUBNORMAL)
2058# define Perl_fp_class_zero(x) (fp_classify(x)==FP_ZERO)
2059#endif
2060
2061#if !defined(Perl_fp_class) && defined(HAS_CLASS)
2062# include <math.h>
2063# ifndef _cplusplus
2064# define Perl_fp_class(x) class(x)
2065# else
2066# define Perl_fp_class(x) _class(x)
2067# endif
2068# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_NANS)
2069# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_NANQ)
2070# define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_SNAN||Perl_fp_class(x)==FP_QNAN)
2071# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2072# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2073# define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_MINUS_INF||Perl_fp_class(x)==FP_PLUS_INF)
2074# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2075# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
2076# define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_MINUS_NORM||Perl_fp_class(x)==FP_PLUS_NORM)
2077# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2078# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2079# define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM||Perl_fp_class(x)==FP_PLUS_DENORM)
2080# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2081# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2082# define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_MINUS_ZERO||Perl_fp_class(x)==FP_PLUS_ZERO)
2083#endif
2084
2085/* rumor has it that Win32 has _isnan() */
2086
2087#ifndef Perl_isnan
a3540c92 2088# ifdef HAS_ISNAN
758a5d79
JH		 2089# define Perl_isnan(x) isnan((NV)x)
2090# else
2091# ifdef Perl_fp_class_nan
2092# define Perl_isnan(x) Perl_fp_class_nan(x)
2093# else
2094# ifdef HAS_UNORDERED
2095# define Perl_isnan(x) unordered((x), 0.0)
2096# else
2097# define Perl_isnan(x) ((x)!=(x))
2098# endif
2099# endif
2100# endif
2101#endif
2102
ca6c63e1
JH		 2103#ifdef UNDER_CE
2104int isnan(double d);
2105#endif
2106
758a5d79
JH		 2107#ifndef Perl_isinf
2108# ifdef HAS_ISINF
2109# define Perl_isinf(x) isinf((NV)x)
a3540c92 2110# else
758a5d79
JH		 2111# ifdef Perl_fp_class_inf
2112# define Perl_isinf(x) Perl_fp_class_inf(x)
2113# else
2114# define Perl_isinf(x) ((x)==NV_INF)
2115# endif
2116# endif
2117#endif
2118
2119#ifndef Perl_isfinite
4efd38a4
JH		 2120# ifdef HAS_ISFINITE
2121# define Perl_isfinite(x) isfinite((NV)x)
2122# elif defined(HAS_FINITE)
758a5d79 2123# define Perl_isfinite(x) finite((NV)x)
4efd38a4
JH		 2124# elif defined(Perl_fp_class_finite)
2125# define Perl_isfinite(x) Perl_fp_class_finite(x)
2126# elif defined(Perl_is_inf) && defined(Perl_is_nan)
2127# define Perl_isfinite(x) !(Perl_is_inf(x)||Perl_is_nan(x))
758a5d79 2128# else
4efd38a4
JH		 2129/* NaN*0 is NaN, [+-]Inf*0 is NaN, zero for anything else. */
2130# define Perl_isfinite(x) (((x) * 0) == 0)
a3540c92 2131# endif
65202027
DS		 2132#endif
2133
a36244b7
JH		 2134/* The default is to use Perl's own atof() implementation (in numeric.c).
2135 * Usually that is the one to use but for some platforms (e.g. UNICOS)
2136 * it is however best to use the native implementation of atof.
2137 * You can experiment with using your native one by -DUSE_PERL_ATOF=0.
2138 * Some good tests to try out with either setting are t/base/num.t,
205f51d8
AS		 2139 * t/op/numconvert.t, and t/op/pack.t. Note that if using long doubles
2140 * you may need to be using a different function than atof! */
a36244b7
JH		 2141
2142#ifndef USE_PERL_ATOF
2143# ifndef _UNICOS
2144# define USE_PERL_ATOF
2145# endif
2146#else
2147# if USE_PERL_ATOF == 0
2148# undef USE_PERL_ATOF
2149# endif
2150#endif
2151
2152#ifdef USE_PERL_ATOF
2153# define Perl_atof(s) Perl_my_atof(s)
2154# define Perl_atof2(s, n) Perl_my_atof2(aTHX_ (s), &(n))
2155#else
2156# define Perl_atof(s) (NV)atof(s)
2157# define Perl_atof2(s, n) ((n) = atof(s))
2158#endif
cf2093f6 2159
d460ef45 2160/* Previously these definitions used hardcoded figures.
760ac839
LW		 2161 * It is hoped these formula are more portable, although
2162 * no data one way or another is presently known to me.
2163 * The "PERL_" names are used because these calculated constants
2164 * do not meet the ANSI requirements for LONG_MAX, etc., which
2165 * need to be constants acceptable to #if - kja
2166 * define PERL_LONG_MAX 2147483647L
2167 * define PERL_LONG_MIN (-LONG_MAX - 1)
2168 * define PERL ULONG_MAX 4294967295L
2169 */
2170
2171#ifdef I_LIMITS /* Needed for cast_xxx() functions below. */
2172# include <limits.h>
760ac839 2173#endif
205f51d8 2174/* Included values.h above if necessary; still including limits.h down here,
486ec47a 2175 * despite doing above, because math.h might have overridden... XXX - Allen */
760ac839 2176
99abf803 2177/*
2178 * Try to figure out max and min values for the integral types. THE CORRECT
2179 * SOLUTION TO THIS MESS: ADAPT enquire.c FROM GCC INTO CONFIGURE. The
2180 * following hacks are used if neither limits.h or values.h provide them:
2181 * U<TYPE>_MAX: for types >= int: ~(unsigned TYPE)0
2182 * for types < int: (unsigned TYPE)~(unsigned)0
2183 * The argument to ~ must be unsigned so that later signed->unsigned
2184 * conversion can't modify the value's bit pattern (e.g. -0 -> +0),
2185 * and it must not be smaller than int because ~ does integral promotion.
2186 * <type>_MAX: (<type>) (U<type>_MAX >> 1)
2187 * <type>_MIN: -<type>_MAX - <is_twos_complement_architecture: (3 & -1) == 3>.
2188 * The latter is a hack which happens to work on some machines but
2189 * does *not* catch any random system, or things like integer types
2190 * with NaN if that is possible.
2191 *
2192 * All of the types are explicitly cast to prevent accidental loss of
2193 * numeric range, and in the hope that they will be less likely to confuse
2194 * over-eager optimizers.
2195 *
2196 */
27d4fb96 2197
99abf803 2198#define PERL_UCHAR_MIN ((unsigned char)0)
2199
2200#ifdef UCHAR_MAX
2201# define PERL_UCHAR_MAX ((unsigned char)UCHAR_MAX)
27d4fb96 2202#else
99abf803 2203# ifdef MAXUCHAR
2204# define PERL_UCHAR_MAX ((unsigned char)MAXUCHAR)
27d4fb96 2205# else
99abf803 2206# define PERL_UCHAR_MAX ((unsigned char)~(unsigned)0)
27d4fb96 2207# endif
2208#endif
d460ef45 2209
99abf803 2210/*
2211 * CHAR_MIN and CHAR_MAX are not included here, as the (char) type may be
2212 * ambiguous. It may be equivalent to (signed char) or (unsigned char)
2213 * depending on local options. Until Configure detects this (or at least
2214 * detects whether the "signed" keyword is available) the CHAR ranges
2215 * will not be included. UCHAR functions normally.
2216 * - kja
2217 */
27d4fb96 2218
99abf803 2219#define PERL_USHORT_MIN ((unsigned short)0)
2220
2221#ifdef USHORT_MAX
2222# define PERL_USHORT_MAX ((unsigned short)USHORT_MAX)
27d4fb96 2223#else
99abf803 2224# ifdef MAXUSHORT
2225# define PERL_USHORT_MAX ((unsigned short)MAXUSHORT)
27d4fb96 2226# else
ef2f54b0
CB		 2227# ifdef USHRT_MAX
2228# define PERL_USHORT_MAX ((unsigned short)USHRT_MAX)
2229# else
2230# define PERL_USHORT_MAX ((unsigned short)~(unsigned)0)
2231# endif
27d4fb96 2232# endif
2233#endif
2234
27d4fb96 2235#ifdef SHORT_MAX
99abf803 2236# define PERL_SHORT_MAX ((short)SHORT_MAX)
27d4fb96 2237#else
2238# ifdef MAXSHORT /* Often used in <values.h> */
99abf803 2239# define PERL_SHORT_MAX ((short)MAXSHORT)
27d4fb96 2240# else
ef2f54b0
CB		 2241# ifdef SHRT_MAX
2242# define PERL_SHORT_MAX ((short)SHRT_MAX)
2243# else
2244# define PERL_SHORT_MAX ((short) (PERL_USHORT_MAX >> 1))
2245# endif
27d4fb96 2246# endif
2247#endif
2248
2249#ifdef SHORT_MIN
99abf803 2250# define PERL_SHORT_MIN ((short)SHORT_MIN)
27d4fb96 2251#else
2252# ifdef MINSHORT
99abf803 2253# define PERL_SHORT_MIN ((short)MINSHORT)
27d4fb96 2254# else
ef2f54b0
CB		 2255# ifdef SHRT_MIN
2256# define PERL_SHORT_MIN ((short)SHRT_MIN)
2257# else
2258# define PERL_SHORT_MIN (-PERL_SHORT_MAX - ((3 & -1) == 3))
2259# endif
27d4fb96 2260# endif
2261#endif
2262
99abf803 2263#ifdef UINT_MAX
2264# define PERL_UINT_MAX ((unsigned int)UINT_MAX)
27d4fb96 2265#else
99abf803 2266# ifdef MAXUINT
2267# define PERL_UINT_MAX ((unsigned int)MAXUINT)
27d4fb96 2268# else
99abf803 2269# define PERL_UINT_MAX (~(unsigned int)0)
27d4fb96 2270# endif
2271#endif
2272
99abf803 2273#define PERL_UINT_MIN ((unsigned int)0)
27d4fb96 2274
2275#ifdef INT_MAX
99abf803 2276# define PERL_INT_MAX ((int)INT_MAX)
27d4fb96 2277#else
2278# ifdef MAXINT /* Often used in <values.h> */
99abf803 2279# define PERL_INT_MAX ((int)MAXINT)
27d4fb96 2280# else
99abf803 2281# define PERL_INT_MAX ((int)(PERL_UINT_MAX >> 1))
27d4fb96 2282# endif
2283#endif
2284
2285#ifdef INT_MIN
99abf803 2286# define PERL_INT_MIN ((int)INT_MIN)
27d4fb96 2287#else
2288# ifdef MININT
99abf803 2289# define PERL_INT_MIN ((int)MININT)
27d4fb96 2290# else
2291# define PERL_INT_MIN (-PERL_INT_MAX - ((3 & -1) == 3))
2292# endif
2293#endif
2294
99abf803 2295#ifdef ULONG_MAX
2296# define PERL_ULONG_MAX ((unsigned long)ULONG_MAX)
27d4fb96 2297#else
99abf803 2298# ifdef MAXULONG
2299# define PERL_ULONG_MAX ((unsigned long)MAXULONG)
27d4fb96 2300# else
99abf803 2301# define PERL_ULONG_MAX (~(unsigned long)0)
27d4fb96 2302# endif
2303#endif
2304
99abf803 2305#define PERL_ULONG_MIN ((unsigned long)0L)
27d4fb96 2306
760ac839 2307#ifdef LONG_MAX
99abf803 2308# define PERL_LONG_MAX ((long)LONG_MAX)
760ac839
LW		 2309#else
2310# ifdef MAXLONG /* Often used in <values.h> */
99abf803 2311# define PERL_LONG_MAX ((long)MAXLONG)
760ac839 2312# else
99abf803 2313# define PERL_LONG_MAX ((long) (PERL_ULONG_MAX >> 1))
760ac839
LW		 2314# endif
2315#endif
2316
2317#ifdef LONG_MIN
99abf803 2318# define PERL_LONG_MIN ((long)LONG_MIN)
760ac839
LW		 2319#else
2320# ifdef MINLONG
99abf803 2321# define PERL_LONG_MIN ((long)MINLONG)
760ac839 2322# else
27d4fb96 2323# define PERL_LONG_MIN (-PERL_LONG_MAX - ((3 & -1) == 3))
760ac839
LW		 2324# endif
2325#endif
2326
d7d93a81 2327#ifdef UV_IS_QUAD
99abf803 2328
99abf803 2329# define PERL_UQUAD_MAX (~(UV)0)
f1c3b19a 2330# define PERL_UQUAD_MIN ((UV)0)
99abf803 2331# define PERL_QUAD_MAX ((IV) (PERL_UQUAD_MAX >> 1))
a6e633de 2332# define PERL_QUAD_MIN (-PERL_QUAD_MAX - ((3 & -1) == 3))
27d4fb96 2333
79072805
LW		 2334#endif
2335
ee0007ab 2336typedef MEM_SIZE STRLEN;
450a55e4 2337
79072805
LW		 2338typedef struct op OP;
2339typedef struct cop COP;
2340typedef struct unop UNOP;
2341typedef struct binop BINOP;
2342typedef struct listop LISTOP;
2343typedef struct logop LOGOP;
79072805
LW		 2344typedef struct pmop PMOP;
2345typedef struct svop SVOP;
7934575e 2346typedef struct padop PADOP;
79072805 2347typedef struct pvop PVOP;
79072805
LW		 2348typedef struct loop LOOP;
2349
7aef8e5b 2350#ifdef PERL_CORE
8be227ab
FC		 2351typedef struct opslab OPSLAB;
2352typedef struct opslot OPSLOT;
2353#endif
2354
52db365a 2355typedef struct block_hooks BHK;
1830b3d9 2356typedef struct custom_op XOP;
52db365a 2357
cd1541b2
NC		 2358typedef struct interpreter PerlInterpreter;
2359
d2b3f365 2360/* SGI's <sys/sema.h> has struct sv */
cc3315ba 2361#if defined(__sgi)
d2b3f365 2362# define STRUCT_SV perl_sv
b8d3c5db
JH		 2363#else
2364# define STRUCT_SV sv
2365#endif
2366typedef struct STRUCT_SV SV;
79072805
LW		 2367typedef struct av AV;
2368typedef struct hv HV;
2369typedef struct cv CV;
d2f13c59 2370typedef struct p5rx REGEXP;
79072805 2371typedef struct gp GP;
0c30d9ec 2372typedef struct gv GV;
8990e307 2373typedef struct io IO;
c09156bb 2374typedef struct context PERL_CONTEXT;
79072805
LW		 2375typedef struct block BLOCK;
2376
2377typedef struct magic MAGIC;
2378typedef struct xpv XPV;
2379typedef struct xpviv XPVIV;
ff68c719 2380typedef struct xpvuv XPVUV;
79072805
LW		 2381typedef struct xpvnv XPVNV;
2382typedef struct xpvmg XPVMG;
2383typedef struct xpvlv XPVLV;
d361b004 2384typedef struct xpvinvlist XINVLIST;
79072805
LW		 2385typedef struct xpvav XPVAV;
2386typedef struct xpvhv XPVHV;
2387typedef struct xpvgv XPVGV;
2388typedef struct xpvcv XPVCV;
2389typedef struct xpvbm XPVBM;
2390typedef struct xpvfm XPVFM;
8990e307 2391typedef struct xpvio XPVIO;
79072805
LW		 2392typedef struct mgvtbl MGVTBL;
2393typedef union any ANY;
5f7fde29
GS		 2394typedef struct ptr_tbl_ent PTR_TBL_ENT_t;
2395typedef struct ptr_tbl PTR_TBL_t;
8cf8f3d1
NIS		 2396typedef struct clone_params CLONE_PARAMS;
2397
35e035cc 2398/* a pad or name pad is currently just an AV; but that might change,
7261499d
FC		 2399 * so hide the type. */
2400typedef struct padlist PADLIST;
67634234 2401typedef AV PAD;
35e035cc
FC		 2402typedef AV PADNAMELIST;
2403typedef SV PADNAME;
67634234 2404
13b0f67d
DM		 2405/* enable PERL_NEW_COPY_ON_WRITE by default */
2406#if !defined(PERL_OLD_COPY_ON_WRITE) && !defined(PERL_NEW_COPY_ON_WRITE) && !defined(PERL_NO_COW)
2407# define PERL_NEW_COPY_ON_WRITE
2408#endif
07d01d6e 2409
db2c6cb3
FC		 2410#if defined(PERL_OLD_COPY_ON_WRITE) || defined(PERL_NEW_COPY_ON_WRITE)
2411# if defined(PERL_OLD_COPY_ON_WRITE) && defined(PERL_NEW_COPY_ON_WRITE)
2412# error PERL_OLD_COPY_ON_WRITE and PERL_NEW_COPY_ON_WRITE are exclusive
2413# else
2414# define PERL_ANY_COW
2415# endif
9f351b45
DM		 2416#else
2417# define PERL_SAWAMPERSAND
db2c6cb3
FC		 2418#endif
2419
378cc40b 2420#include "handy.h"
a0d0e21e 2421
6b8eaf93 2422#if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_RAWIO)
6b8eaf93
JH		 2423# if LSEEKSIZE == 8 && !defined(USE_64_BIT_RAWIO)
2424# define USE_64_BIT_RAWIO /* implicit */
2425# endif
4564133c
JH		 2426#endif
2427
6b8eaf93
JH		 2428/* Notice the use of HAS_FSEEKO: now we are obligated to always use
2429 * fseeko/ftello if possible. Don't go #defining ftell to ftello yourself,
2430 * however, because operating systems like to do that themself. */
2431#ifndef FSEEKSIZE
2432# ifdef HAS_FSEEKO
2433# define FSEEKSIZE LSEEKSIZE
2434# else
2435# define FSEEKSIZE LONGSIZE
d460ef45 2436# endif
6b8eaf93
JH		 2437#endif
2438
2439#if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_STDIO)
6b8eaf93
JH		 2440# if FSEEKSIZE == 8 && !defined(USE_64_BIT_STDIO)
2441# define USE_64_BIT_STDIO /* implicit */
2442# endif
2443#endif
4564133c 2444
09458382 2445#ifdef USE_64_BIT_RAWIO
d9b3e12d
JH		 2446# ifdef HAS_OFF64_T
2447# undef Off_t
2448# define Off_t off64_t
2449# undef LSEEKSIZE
2450# define LSEEKSIZE 8
5ff3f7a4 2451# endif
d9b3e12d
JH		 2452/* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
2453 * will trigger defines like the ones below. Some 64-bit environments,
09458382 2454 * however, do not. Therefore we have to explicitly mix and match. */
d9b3e12d
JH		 2455# if defined(USE_OPEN64)
2456# define open open64
5ff3f7a4 2457# endif
d9b3e12d
JH		 2458# if defined(USE_LSEEK64)
2459# define lseek lseek64
6b8eaf93
JH		 2460# else
2461# if defined(USE_LLSEEK)
2462# define lseek llseek
2463# endif
d9b3e12d
JH		 2464# endif
2465# if defined(USE_STAT64)
2466# define stat stat64
2467# endif
2468# if defined(USE_FSTAT64)
2469# define fstat fstat64
2470# endif
2471# if defined(USE_LSTAT64)
2472# define lstat lstat64
2473# endif
2474# if defined(USE_FLOCK64)
2475# define flock flock64
2476# endif
2477# if defined(USE_LOCKF64)
2478# define lockf lockf64
2479# endif
2480# if defined(USE_FCNTL64)
2481# define fcntl fcntl64
2482# endif
2483# if defined(USE_TRUNCATE64)
2484# define truncate truncate64
2485# endif
2486# if defined(USE_FTRUNCATE64)
2487# define ftruncate ftruncate64
2488# endif
2489#endif
2490
2491#ifdef USE_64_BIT_STDIO
2492# ifdef HAS_FPOS64_T
2493# undef Fpos_t
2494# define Fpos_t fpos64_t
2495# endif
2496/* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
2497 * will trigger defines like the ones below. Some 64-bit environments,
2498 * however, do not. */
2499# if defined(USE_FOPEN64)
2500# define fopen fopen64
2501# endif
2502# if defined(USE_FSEEK64)
6b8eaf93 2503# define fseek fseek64 /* don't do fseeko here, see perlio.c */
d9b3e12d
JH		 2504# endif
2505# if defined(USE_FTELL64)
6b8eaf93 2506# define ftell ftell64 /* don't do ftello here, see perlio.c */
d9b3e12d
JH		 2507# endif
2508# if defined(USE_FSETPOS64)
2509# define fsetpos fsetpos64
2510# endif
2511# if defined(USE_FGETPOS64)
2512# define fgetpos fgetpos64
2513# endif
2514# if defined(USE_TMPFILE64)
2515# define tmpfile tmpfile64
2516# endif
2517# if defined(USE_FREOPEN64)
2518# define freopen freopen64
5ff3f7a4
GS		 2519# endif
2520#endif
2521
e37778c2 2522#if defined(OS2)
2c2d71f5
JH		 2523# include "iperlsys.h"
2524#endif
2525
748a9306 2526#ifdef DOSISH
19848b3f
JH		 2527# if defined(OS2)
2528# include "os2ish.h"
2529# else
2530# include "dosish.h"
2531# endif
009819bb 2532#elif defined(VMS)
748a9306 2533# include "vmsish.h"
009819bb 2534#elif defined(PLAN9)
19848b3f 2535# include "./plan9/plan9ish.h"
009819bb 2536#elif defined(__VOS__)
196918b0
PG		 2537# ifdef __GNUC__
2538# include "./vos/vosish.h"
2539# else
2540# include "vos/vosish.h"
2541# endif
009819bb 2542#elif defined(__SYMBIAN32__)
27da23d5 2543# include "symbian/symbianish.h"
009819bb 2544#elif defined(__HAIKU__)
df00ff3b 2545# include "haiku/haikuish.h"
009819bb 2546#else
19848b3f 2547# include "unixish.h"
13b6e58c
JH		 2548#endif
2549
2946a158
JH		 2550/* NSIG logic from Configure --> */
2551/* Strange style to avoid deeply-nested #if/#else/#endif */
2552#ifndef NSIG
2553# ifdef _NSIG
2554# define NSIG (_NSIG)
2555# endif
2556#endif
2557
2558#ifndef NSIG
2559# ifdef SIGMAX
2560# define NSIG (SIGMAX+1)
2561# endif
2562#endif
2563
2564#ifndef NSIG
2565# ifdef SIG_MAX
2566# define NSIG (SIG_MAX+1)
2567# endif
2568#endif
2569
2570#ifndef NSIG
2571# ifdef _SIG_MAX
2572# define NSIG (_SIG_MAX+1)
2573# endif
2574#endif
2575
2576#ifndef NSIG
2577# ifdef MAXSIG
2578# define NSIG (MAXSIG+1)
2579# endif
2580#endif
2581
2582#ifndef NSIG
2583# ifdef MAX_SIG
2584# define NSIG (MAX_SIG+1)
2585# endif
2586#endif
2587
2588#ifndef NSIG
2589# ifdef SIGARRAYSIZE
2590# define NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
2591# endif
2592#endif
2593
2594#ifndef NSIG
2595# ifdef _sys_nsig
2596# define NSIG (_sys_nsig) /* Solaris 2.5 */
2597# endif
2598#endif
2599
2600/* Default to some arbitrary number that's big enough to get most
2601 of the common signals.
2602*/
2603#ifndef NSIG
2604# define NSIG 50
2605#endif
2606/* <-- NSIG logic from Configure */
2607
13b6e58c
JH		 2608#ifndef NO_ENVIRON_ARRAY
2609# define USE_ENVIRON_ARRAY
2610#endif
32f822de 2611
c77b533b
JH		 2612/*
2613 * initialise to avoid floating-point exceptions from overflow, etc
2614 */
2615#ifndef PERL_FPU_INIT
2616# ifdef HAS_FPSETMASK
2617# if HAS_FLOATINGPOINT_H
2618# include <floatingpoint.h>
2619# endif
ad3a8c67
NC		 2620/* Some operating systems have this as a macro, which in turn expands to a comma
2621 expression, and the last sub-expression is something that gets calculated,
2622 and then they have the gall to warn that a value computed is not used. Hence
2623 cast to void. */
2624# define PERL_FPU_INIT (void)fpsetmask(0)
c77b533b 2625# else
2f42fcb0 2626# if defined(SIGFPE) && defined(SIG_IGN) && !defined(PERL_MICRO)
7f7c3354 2627# define PERL_FPU_INIT PL_sigfpe_saved = (Sighandler_t) signal(SIGFPE, SIG_IGN)
b35112e7
CS		 2628# define PERL_FPU_PRE_EXEC { Sigsave_t xfpe; rsignal_save(SIGFPE, PL_sigfpe_saved, &xfpe);
2629# define PERL_FPU_POST_EXEC rsignal_restore(SIGFPE, &xfpe); }
7014c407
JH		 2630# else
2631# define PERL_FPU_INIT
2f42fcb0 2632
7014c407 2633# endif
c77b533b
JH		 2634# endif
2635#endif
b35112e7
CS		 2636#ifndef PERL_FPU_PRE_EXEC
2637# define PERL_FPU_PRE_EXEC {
2638# define PERL_FPU_POST_EXEC }
2639#endif
c77b533b 2640
cbec8ebe
DM		 2641#ifndef PERL_SYS_INIT3_BODY
2642# define PERL_SYS_INIT3_BODY(argvp,argcp,envp) PERL_SYS_INIT_BODY(argvp,argcp)
ed344e4f
IZ		 2643#endif
2644
eb533572 2645/*
dcccc8ff
KW		 2646=head1 Miscellaneous Functions
2647
4ad9e498 2648=for apidoc Am|void|PERL_SYS_INIT|int *argc|char*** argv
eb533572 2649Provides system-specific tune up of the C runtime environment necessary to
72d33970 2650run Perl interpreters. This should be called only once, before creating
eb533572
DM		 2651any Perl interpreters.
2652
4ad9e498 2653=for apidoc Am|void|PERL_SYS_INIT3|int *argc|char*** argv|char*** env
eb533572 2654Provides system-specific tune up of the C runtime environment necessary to
72d33970 2655run Perl interpreters. This should be called only once, before creating
eb533572
DM		 2656any Perl interpreters.
2657
2658=for apidoc Am|void|PERL_SYS_TERM|
2659Provides system-specific clean up of the C runtime environment after
72d33970 2660running Perl interpreters. This should be called only once, after
eb533572
DM		 2661freeing any remaining Perl interpreters.
2662
2663=cut
2664 */
2665
cbec8ebe
DM		 2666#define PERL_SYS_INIT(argc, argv) Perl_sys_init(argc, argv)
2667#define PERL_SYS_INIT3(argc, argv, env) Perl_sys_init3(argc, argv, env)
d0820ef1 2668#define PERL_SYS_TERM() Perl_sys_term()
cbec8ebe 2669
be708cc0
JH		 2670#ifndef PERL_WRITE_MSG_TO_CONSOLE
2671# define PERL_WRITE_MSG_TO_CONSOLE(io, msg, len) PerlIO_write(io, msg, len)
2672#endif
2673
0f31cffe
GS		 2674#ifndef MAXPATHLEN
2675# ifdef PATH_MAX
b990c8b2
JH		 2676# ifdef _POSIX_PATH_MAX
2677# if PATH_MAX > _POSIX_PATH_MAX
09448d78
JH		 2678/* POSIX 1990 (and pre) was ambiguous about whether PATH_MAX
2679 * included the null byte or not. Later amendments of POSIX,
2680 * XPG4, the Austin Group, and the Single UNIX Specification
2681 * all explicitly include the null byte in the PATH_MAX.
2682 * Ditto for _POSIX_PATH_MAX. */
2683# define MAXPATHLEN PATH_MAX
b990c8b2 2684# else
09448d78 2685# define MAXPATHLEN _POSIX_PATH_MAX
b990c8b2
JH		 2686# endif
2687# else
2688# define MAXPATHLEN (PATH_MAX+1)
2689# endif
0f31cffe 2690# else
d552bce8 2691# define MAXPATHLEN 1024 /* Err on the large side. */
0f31cffe
GS		 2692# endif
2693#endif
2694
c80263a8
SH		 2695/* In case Configure was not used (we are using a "canned config"
2696 * such as Win32, or a cross-compilation setup, for example) try going
2697 * by the gcc major and minor versions. One useful URL is
2698 * http://www.ohse.de/uwe/articles/gcc-attributes.html,
2699 * but contrary to this information warn_unused_result seems
2700 * not to be in gcc 3.3.5, at least. --jhi
42bf5550
AD		 2701 * Also, when building extensions with an installed perl, this allows
2702 * the user to upgrade gcc and get the right attributes, rather than
2703 * relying on the list generated at Configure time. --AD
c80263a8
SH		 2704 * Set these up now otherwise we get confused when some of the <*thread.h>
2705 * includes below indirectly pull in <perlio.h> (which needs to know if we
2706 * have HASATTRIBUTE_FORMAT).
2707 */
2708
4d7c7898 2709#ifndef PERL_MICRO
fc2007d4 2710#if defined __GNUC__ && !defined(__INTEL_COMPILER)
6a387721
RGS		 2711# if __GNUC__ == 3 && __GNUC_MINOR__ >= 1 || __GNUC__ > 3 /* 3.1 -> */
2712# define HASATTRIBUTE_DEPRECATED
2713# endif
c80263a8
SH		 2714# if __GNUC__ >= 3 /* 3.0 -> */ /* XXX Verify this version */
2715# define HASATTRIBUTE_FORMAT
63cdf24b
SH		 2716# if defined __MINGW32__
2717# define PRINTF_FORMAT_NULL_OK
2718# endif
c80263a8
SH		 2719# endif
2720# if __GNUC__ >= 3 /* 3.0 -> */
2721# define HASATTRIBUTE_MALLOC
2722# endif
2723# if __GNUC__ == 3 && __GNUC_MINOR__ >= 3 || __GNUC__ > 3 /* 3.3 -> */
2724# define HASATTRIBUTE_NONNULL
2725# endif
2726# if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 || __GNUC__ > 2 /* 2.5 -> */
2727# define HASATTRIBUTE_NORETURN
2728# endif
2729# if __GNUC__ >= 3 /* gcc 3.0 -> */
2730# define HASATTRIBUTE_PURE
2731# endif
42bf5550 2732# if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 /* 3.4 -> */
c80263a8
SH		 2733# define HASATTRIBUTE_UNUSED
2734# endif
d324fe49
AD		 2735# if __GNUC__ == 3 && __GNUC_MINOR__ == 3 && !defined(__cplusplus)
2736# define HASATTRIBUTE_UNUSED /* gcc-3.3, but not g++-3.3. */
2737# endif
c80263a8
SH		 2738# if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 /* 3.4 -> */
2739# define HASATTRIBUTE_WARN_UNUSED_RESULT
2740# endif
2741#endif
00f254e2 2742#endif /* #ifndef PERL_MICRO */
c80263a8 2743
3db8f154 2744/* USE_5005THREADS needs to be after unixish.h as <pthread.h> includes
dd96f567 2745 * <sys/signal.h> which defines NSIG - which will stop inclusion of <signal.h>
32f822de
GS		 2746 * this results in many functions being undeclared which bothers C++
2747 * May make sense to have threads after "*ish.h" anyway
2748 */
2749
3db8f154 2750#if defined(USE_ITHREADS)
2986a63f
JH		 2751# ifdef NETWARE
2752# include <nw5thread.h>
2753# else
32f822de
GS		 2754# ifdef WIN32
2755# include <win32thread.h>
2756# else
dd96f567
IZ		 2757# ifdef OS2
2758# include "os2thread.h"
2759# else
7f3d1cf1 2760# ifdef I_MACH_CTHREADS
bdd66968 2761# include <mach/cthreads.h>
7f3d1cf1
BH		 2762typedef cthread_t perl_os_thread;
2763typedef mutex_t perl_mutex;
2764typedef condition_t perl_cond;
2765typedef void * perl_key;
2766# else /* Posix threads */
1f5ae88c
JH		 2767# ifdef I_PTHREAD
2768# include <pthread.h>
2769# endif
7f3d1cf1
BH		 2770typedef pthread_t perl_os_thread;
2771typedef pthread_mutex_t perl_mutex;
2772typedef pthread_cond_t perl_cond;
2773typedef pthread_key_t perl_key;
2774# endif /* I_MACH_CTHREADS */
dd96f567 2775# endif /* OS2 */
32f822de 2776# endif /* WIN32 */
ef4abe76 2777# endif /* NETWARE */
3db8f154 2778#endif /* USE_ITHREADS */
c5be433b 2779
66a93824 2780#if defined(WIN32)
1feb2720 2781# include "win32.h"
c5be433b
GS		 2782#endif
2783
2986a63f
JH		 2784#ifdef NETWARE
2785# include "netware.h"
2786#endif
2787
e5218da5 2788#define STATUS_UNIX PL_statusvalue
68dc0745 2789#ifdef VMS
6b88bc9c 2790# define STATUS_NATIVE PL_statusvalue_vms
7a7fd8e0
JM		 2791/*
2792 * vaxc$errno is only guaranteed to be valid if errno == EVMSERR, otherwise
ff7298cb 2793 * its contents can not be trusted. Unfortunately, Perl seems to check
7a7fd8e0
JM		 2794 * it on exit, so it when PL_statusvalue_vms is updated, vaxc$errno should
2795 * be updated also.
2796 */
2797# include <stsdef.h>
2798# include <ssdef.h>
2799/* Presume this because if VMS changes it, it will require a new
2800 * set of APIs for waiting on children for binary compatibility.
2801 */
2802# define child_offset_bits (8)
2803# ifndef C_FAC_POSIX
2804# define C_FAC_POSIX 0x35A000
2805# endif
2806
2807/* STATUS_EXIT - validates and returns a NATIVE exit status code for the
2808 * platform from the existing UNIX or Native status values.
2809 */
2810
37038d91 2811# define STATUS_EXIT \
7a7fd8e0
JM		 2812 (((I32)PL_statusvalue_vms == -1 ? SS$_ABORT : PL_statusvalue_vms) | \
2813 (VMSISH_HUSHED ? STS$M_INHIB_MSG : 0))
2814
7a7fd8e0 2815
fb38d079
JM		 2816/* STATUS_NATIVE_CHILD_SET - Calculate UNIX status that matches the child
2817 * exit code and shifts the UNIX value over the correct number of bits to
2818 * be a child status. Usually the number of bits is 8, but that could be
2819 * platform dependent. The NATIVE status code is presumed to have either
2820 * from a child process.
7a7fd8e0
JM		 2821 */
2822
fb38d079
JM		 2823/* This is complicated. The child processes return a true native VMS
2824 status which must be saved. But there is an assumption in Perl that
2825 the UNIX child status has some relationship to errno values, so
00f254e2 2826 Perl tries to translate it to text in some of the tests.
fb38d079
JM		 2827 In order to get the string translation correct, for the error, errno
2828 must be EVMSERR, but that generates a different text message
2829 than what the test programs are expecting. So an errno value must
2830 be derived from the native status value when an error occurs.
2831 That will hide the true native status message. With this version of
2832 perl, the true native child status can always be retrieved so that
2833 is not a problem. But in this case, Pl_statusvalue and errno may
2834 have different values in them.
2835 */
7a7fd8e0 2836
fb38d079 2837# define STATUS_NATIVE_CHILD_SET(n) \
68dc0745 2838 STMT_START { \
2fbb330f
JM		 2839 I32 evalue = (I32)n; \
2840 if (evalue == EVMSERR) { \
2841 PL_statusvalue_vms = vaxc$errno; \
2842 PL_statusvalue = evalue; \
7a7fd8e0 2843 } else { \
2fbb330f 2844 PL_statusvalue_vms = evalue; \
fb38d079 2845 if (evalue == -1) { \
3280af22 2846 PL_statusvalue = -1; \
7a7fd8e0
JM		 2847 PL_statusvalue_vms = SS$_ABORT; /* Should not happen */ \
2848 } else \
fb38d079 2849 PL_statusvalue = Perl_vms_status_to_unix(evalue, 1); \
2fbb330f 2850 set_vaxc_errno(evalue); \
fb38d079
JM		 2851 if ((PL_statusvalue_vms & C_FAC_POSIX) == C_FAC_POSIX) \
2852 set_errno(EVMSERR); \
2853 else set_errno(Perl_vms_status_to_unix(evalue, 0)); \
2854 PL_statusvalue = PL_statusvalue << child_offset_bits; \
2fbb330f 2855 } \
68dc0745 2856 } STMT_END
7a7fd8e0 2857
68dc0745 2858# ifdef VMSISH_STATUS
e5218da5 2859# define STATUS_CURRENT (VMSISH_STATUS ? STATUS_NATIVE : STATUS_UNIX)
68dc0745 2860# else
e5218da5 2861# define STATUS_CURRENT STATUS_UNIX
68dc0745 2862# endif
7a7fd8e0
JM		 2863
2864 /* STATUS_UNIX_SET - takes a UNIX/POSIX errno value and attempts to update
2865 * the NATIVE status to an equivalent value. Can not be used to translate
2866 * exit code values as exit code values are not guaranteed to have any
2867 * relationship at all to errno values.
2868 * This is used when Perl is forcing errno to have a specific value.
2869 */
e5218da5 2870# define STATUS_UNIX_SET(n) \
68dc0745 2871 STMT_START { \
7a7fd8e0 2872 I32 evalue = (I32)n; \
0968cdad 2873 PL_statusvalue = evalue; \
3280af22 2874 if (PL_statusvalue != -1) { \
0968cdad
JM		 2875 if (PL_statusvalue != EVMSERR) { \
2876 PL_statusvalue &= 0xFFFF; \
2877 if (MY_POSIX_EXIT) \
2878 PL_statusvalue_vms=PL_statusvalue ? SS$_ABORT : SS$_NORMAL;\
2879 else PL_statusvalue_vms = Perl_unix_status_to_vms(evalue); \
2880 } \
2881 else { \
2882 PL_statusvalue_vms = vaxc$errno; \
2883 } \
68dc0745 2884 } \
0968cdad
JM		 2885 else PL_statusvalue_vms = SS$_ABORT; \
2886 set_vaxc_errno(PL_statusvalue_vms); \
7a7fd8e0
JM		 2887 } STMT_END
2888
2889 /* STATUS_UNIX_EXIT_SET - Takes a UNIX/POSIX exit code and sets
e08e1e1d
JM		 2890 * the NATIVE error status based on it.
2891 *
2892 * When in the default mode to comply with the Perl VMS documentation,
2893 * 0 is a success and any other code sets the NATIVE status to a failure
2894 * code of SS$_ABORT.
fb38d079
JM		 2895 *
2896 * In the new POSIX EXIT mode, native status will be set so that the
2897 * actual exit code will can be retrieved by the calling program or
2898 * shell.
2899 *
2900 * If the exit code is not clearly a UNIX parent or child exit status,
2901 * it will be passed through as a VMS status.
7a7fd8e0
JM		 2902 */
2903
fb38d079 2904# define STATUS_UNIX_EXIT_SET(n) \
7a7fd8e0
JM		 2905 STMT_START { \
2906 I32 evalue = (I32)n; \
2907 PL_statusvalue = evalue; \
e08e1e1d
JM		 2908 if (MY_POSIX_EXIT) { \
2909 if (evalue <= 0xFF00) { \
2910 if (evalue > 0xFF) \
2911 evalue = (evalue >> child_offset_bits) & 0xFF; \
2912 PL_statusvalue_vms = \
2913 (C_FAC_POSIX | (evalue << 3 ) | \
2914 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1)); \
2915 } else /* forgive them Perl, for they have sinned */ \
2916 PL_statusvalue_vms = evalue; \
2917 } else { \
2918 if (evalue == 0) \
2919 PL_statusvalue_vms = SS$_NORMAL; \
2920 else if (evalue <= 0xFF00) \
2921 PL_statusvalue_vms = SS$_ABORT; \
2922 else { /* forgive them Perl, for they have sinned */ \
2923 if (evalue != EVMSERR) PL_statusvalue_vms = evalue; \
2924 else PL_statusvalue_vms = vaxc$errno; \
2925 /* And obviously used a VMS status value instead of UNIX */ \
2926 PL_statusvalue = EVMSERR; \
2927 } \
2928 set_vaxc_errno(PL_statusvalue_vms); \
2929 } \
68dc0745 2930 } STMT_END
fb38d079 2931
e08e1e1d 2932
6ac6a52b
JM		 2933 /* STATUS_EXIT_SET - Takes a NATIVE/UNIX/POSIX exit code
2934 * and sets the NATIVE error status based on it. This special case
2935 * is needed to maintain compatibility with past VMS behavior.
2936 *
2937 * In the default mode on VMS, this number is passed through as
2938 * both the NATIVE and UNIX status. Which makes it different
2939 * that the STATUS_UNIX_EXIT_SET.
2940 *
2941 * In the new POSIX EXIT mode, native status will be set so that the
2942 * actual exit code will can be retrieved by the calling program or
2943 * shell.
2944 *
1a3aec58
JM		 2945 * A POSIX exit code is from 0 to 255. If the exit code is higher
2946 * than this, it needs to be assumed that it is a VMS exit code and
2947 * passed through.
6ac6a52b
JM		 2948 */
2949
2950# define STATUS_EXIT_SET(n) \
2951 STMT_START { \
2952 I32 evalue = (I32)n; \
2953 PL_statusvalue = evalue; \
2954 if (MY_POSIX_EXIT) \
1a3aec58
JM		 2955 if (evalue > 255) PL_statusvalue_vms = evalue; else { \
2956 PL_statusvalue_vms = \
2957 (C_FAC_POSIX | (evalue << 3 ) | \
2958 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1));} \
6ac6a52b
JM		 2959 else \
2960 PL_statusvalue_vms = evalue ? evalue : SS$_NORMAL; \
2961 set_vaxc_errno(PL_statusvalue_vms); \
2962 } STMT_END
2963
fb38d079
JM		 2964
2965 /* This macro forces a success status */
7a7fd8e0
JM		 2966# define STATUS_ALL_SUCCESS \
2967 (PL_statusvalue = 0, PL_statusvalue_vms = SS$_NORMAL)
fb38d079
JM		 2968
2969 /* This macro forces a failure status */
7a7fd8e0
JM		 2970# define STATUS_ALL_FAILURE (PL_statusvalue = 1, \
2971 vaxc$errno = PL_statusvalue_vms = MY_POSIX_EXIT ? \
2972 (C_FAC_POSIX | (1 << 3) | STS$K_ERROR | STS$M_INHIB_MSG) : SS$_ABORT)
fb38d079 2973
68dc0745 2974#else
e5218da5 2975# define STATUS_NATIVE PL_statusvalue_posix
e5218da5 2976# if defined(WCOREDUMP)
37038d91 2977# define STATUS_NATIVE_CHILD_SET(n) \
e5218da5
GA		 2978 STMT_START { \
2979 PL_statusvalue_posix = (n); \
2980 if (PL_statusvalue_posix == -1) \
2981 PL_statusvalue = -1; \
2982 else { \
2983 PL_statusvalue = \
2984 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
2985 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0) | \
2986 (WIFSIGNALED(PL_statusvalue_posix) && WCOREDUMP(PL_statusvalue_posix) ? 0x80 : 0); \
2987 } \
2988 } STMT_END
2989# elif defined(WIFEXITED)
37038d91 2990# define STATUS_NATIVE_CHILD_SET(n) \
e5218da5
GA		 2991 STMT_START { \
2992 PL_statusvalue_posix = (n); \
2993 if (PL_statusvalue_posix == -1) \
2994 PL_statusvalue = -1; \
2995 else { \
2996 PL_statusvalue = \
2997 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
2998 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0); \
2999 } \
3000 } STMT_END
3001# else
37038d91 3002# define STATUS_NATIVE_CHILD_SET(n) \
e5218da5
GA		 3003 STMT_START { \
3004 PL_statusvalue_posix = (n); \
3005 if (PL_statusvalue_posix == -1) \
3006 PL_statusvalue = -1; \
3007 else { \
3008 PL_statusvalue = \
3009 PL_statusvalue_posix & 0xFFFF; \
3010 } \
3011 } STMT_END
3012# endif
3013# define STATUS_UNIX_SET(n) \
68dc0745 3014 STMT_START { \
3280af22
NIS		 3015 PL_statusvalue = (n); \
3016 if (PL_statusvalue != -1) \
3017 PL_statusvalue &= 0xFFFF; \
68dc0745 3018 } STMT_END
7a7fd8e0 3019# define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
6ac6a52b 3020# define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
e5218da5 3021# define STATUS_CURRENT STATUS_UNIX
37038d91 3022# define STATUS_EXIT STATUS_UNIX
e5218da5
GA		 3023# define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3024# define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
68dc0745 3025#endif
3026
cc3604b1
GS		 3027/* flags in PL_exit_flags for nature of exit() */
3028#define PERL_EXIT_EXPECTED 0x01
31d77e54 3029#define PERL_EXIT_DESTRUCT_END 0x02 /* Run END in perl_destruct */
6136213b
JGM		 3030#define PERL_EXIT_WARN 0x04 /* Warn if Perl_my_exit() or Perl_my_failure_exit() called */
3031#define PERL_EXIT_ABORT 0x08 /* Call abort() if Perl_my_exit() or Perl_my_failure_exit() called */
cc3604b1 3032
b79b76e0 3033#ifndef PERL_CORE
a7cb1f99 3034/* format to use for version numbers in file/directory names */
273cf8d1 3035/* XXX move to Configure? */
b79b76e0
NC		 3036/* This was only ever used for the current version, and that can be done at
3037 compile time, as PERL_FS_VERSION, so should we just delete it? */
3038# ifndef PERL_FS_VER_FMT
3039# define PERL_FS_VER_FMT "%d.%d.%d"
3040# endif
3041#endif
3042
3043#ifndef PERL_FS_VERSION
3044# define PERL_FS_VERSION PERL_VERSION_STRING
0b94c7bb
GS		 3045#endif
3046
45bc9206 3047/* This defines a way to flush all output buffers. This may be a
76549fef
JH		 3048 * performance issue, so we allow people to disable it. Also, if
3049 * we are using stdio, there are broken implementations of fflush(NULL)
3050 * out there, Solaris being the most prominent.
45bc9206
GS		 3051 */
3052#ifndef PERL_FLUSHALL_FOR_CHILD
97cb92d6 3053# if defined(USE_PERLIO) || defined(FFLUSH_NULL)
66fe083f 3054# define PERL_FLUSHALL_FOR_CHILD PerlIO_flush((PerlIO*)NULL)
767df6a1
JH		 3055# else
3056# ifdef FFLUSH_ALL
3057# define PERL_FLUSHALL_FOR_CHILD my_fflush_all()
e2dbf222 3058# else
c5be433b 3059# define PERL_FLUSHALL_FOR_CHILD NOOP
767df6a1 3060# endif
66fe083f 3061# endif
45bc9206
GS		 3062#endif
3063
7766f137
GS		 3064#ifndef PERL_WAIT_FOR_CHILDREN
3065# define PERL_WAIT_FOR_CHILDREN NOOP
3066#endif
3067
ba869deb 3068/* the traditional thread-unsafe notion of "current interpreter". */
c5be433b
GS		 3069#ifndef PERL_SET_INTERP
3070# define PERL_SET_INTERP(i) (PL_curinterp = (PerlInterpreter*)(i))
3071#endif
3072
3073#ifndef PERL_GET_INTERP
3074# define PERL_GET_INTERP (PL_curinterp)
3075#endif
3076
54aff467 3077#if defined(PERL_IMPLICIT_CONTEXT) && !defined(PERL_GET_THX)
54aff467 3078# ifdef MULTIPLICITY
ba869deb 3079# define PERL_GET_THX ((PerlInterpreter *)PERL_GET_CONTEXT)
54aff467 3080# endif
ba869deb
GS		 3081# define PERL_SET_THX(t) PERL_SET_CONTEXT(t)
3082#endif
3083
00f254e2 3084/*
8896765a 3085 This replaces the previous %_ "hack" by the "%p" hacks.
0dbb1585 3086 All that is required is that the perl source does not
00f254e2
KW		 3087 use "%-p" or "%-<number>p" or "%<number>p" formats.
3088 These formats will still work in perl code.
486ec47a 3089 See comments in sv.c for further details.
8896765a 3090
8896765a 3091 Robin Barker 2005-07-14
f46d31f2 3092
00f254e2 3093 No longer use %1p for VDf = %vd. RMB 2007-10-19
0dbb1585 3094*/
8896765a
RB		 3095
3096#ifndef SVf_
63ce7bf0 3097# define SVf_(n) "-" STRINGIFY(n) "p"
894356b3
GS		 3098#endif
3099
8896765a 3100#ifndef SVf
104abab4 3101# define SVf "-p"
d2560b70
RB		 3102#endif
3103
014ead4b 3104#ifndef SVf32
8896765a 3105# define SVf32 SVf_(32)
014ead4b
RB		 3106#endif
3107
3108#ifndef SVf256
8896765a
RB		 3109# define SVf256 SVf_(256)
3110#endif
3111
be2597df
MHM		 3112#define SVfARG(p) ((void*)(p))
3113
20023040
FC		 3114#ifndef HEKf
3115# define HEKf "2p"
3116#endif
3117
b8fa5213
FC		 3118/* Not ideal, but we cannot easily include a number in an already-numeric
3119 * format sequence. */
3120#ifndef HEKf256
3121# define HEKf256 "3p"
3122#endif
3123
20023040
FC		 3124#define HEKfARG(p) ((void*)(p))
3125
b17a0679
FC		 3126/* Takes three arguments: is_utf8, length, str */
3127#ifndef UTF8f
61608bb7 3128# define UTF8f "d%" UVuf "%4p"
b17a0679
FC		 3129#endif
3130#define UTF8fARG(u,l,p) (int)cBOOL(u), (UV)(l), (void*)(p)
3131
f46d31f2 3132#ifdef PERL_CORE
486ec47a 3133/* not used; but needed for backward compatibility with XS code? - RMB */
7776bb98
RB		 3134# undef UVf
3135#else
170cd9e9
NC		 3136# ifndef UVf
3137# define UVf UVuf
3138# endif
d2560b70
RB		 3139#endif
3140
fcdf39cf
RGS		 3141#ifdef HASATTRIBUTE_DEPRECATED
3142# define __attribute__deprecated__ __attribute__((deprecated))
3143#endif
0dbb1585
AL		 3144#ifdef HASATTRIBUTE_FORMAT
3145# define __attribute__format__(x,y,z) __attribute__((format(x,y,z)))
3146#endif
3147#ifdef HASATTRIBUTE_MALLOC
77785eea 3148# define __attribute__malloc__ __attribute__((__malloc__))
f22be1b8 3149#endif
0dbb1585 3150#ifdef HASATTRIBUTE_NONNULL
abb2c242 3151# define __attribute__nonnull__(a) __attribute__((nonnull(a)))
f22be1b8 3152#endif
0dbb1585 3153#ifdef HASATTRIBUTE_NORETURN
abb2c242 3154# define __attribute__noreturn__ __attribute__((noreturn))
f22be1b8 3155#endif
0dbb1585 3156#ifdef HASATTRIBUTE_PURE
abb2c242 3157# define __attribute__pure__ __attribute__((pure))
f22be1b8 3158#endif
0dbb1585
AL		 3159#ifdef HASATTRIBUTE_UNUSED
3160# define __attribute__unused__ __attribute__((unused))
3161#endif
3162#ifdef HASATTRIBUTE_WARN_UNUSED_RESULT
abb2c242 3163# define __attribute__warn_unused_result__ __attribute__((warn_unused_result))
f22be1b8
JH		 3164#endif
3165
0dbb1585 3166/* If we haven't defined the attributes yet, define them to blank. */
fcdf39cf
RGS		 3167#ifndef __attribute__deprecated__
3168# define __attribute__deprecated__
3169#endif
0dbb1585
AL		 3170#ifndef __attribute__format__
3171# define __attribute__format__(x,y,z)
3172#endif
f22be1b8 3173#ifndef __attribute__malloc__
abb2c242 3174# define __attribute__malloc__
f22be1b8
JH		 3175#endif
3176#ifndef __attribute__nonnull__
abb2c242 3177# define __attribute__nonnull__(a)
f22be1b8
JH		 3178#endif
3179#ifndef __attribute__noreturn__
abb2c242 3180# define __attribute__noreturn__
f22be1b8
JH		 3181#endif
3182#ifndef __attribute__pure__
abb2c242 3183# define __attribute__pure__
f22be1b8 3184#endif
0dbb1585
AL		 3185#ifndef __attribute__unused__
3186# define __attribute__unused__
3187#endif
f22be1b8 3188#ifndef __attribute__warn_unused_result__
abb2c242
JH		 3189# define __attribute__warn_unused_result__
3190#endif
3191
cd13e623
JH		 3192#if defined(DEBUGGING) && defined(I_ASSERT)
3193# include <assert.h>
3194#endif
3195
0dbb1585
AL		 3196/* For functions that are marked as __attribute__noreturn__, it's not
3197 appropriate to call return. In either case, include the lint directive.
3198 */
3199#ifdef HASATTRIBUTE_NORETURN
ae103e09 3200# define NORETURN_FUNCTION_END NOT_REACHED; /* NOTREACHED */
0dbb1585 3201#else
ae103e09 3202# define NORETURN_FUNCTION_END NOT_REACHED; /* NOTREACHED */ return 0
abb2c242
JH		 3203#endif
3204
cdfeb707
RB		 3205/* Some OS warn on NULL format to printf */
3206#ifdef PRINTF_FORMAT_NULL_OK
3207# define __attribute__format__null_ok__(x,y,z) __attribute__format__(x,y,z)
3208#else
00f254e2 3209# define __attribute__format__null_ok__(x,y,z)
cdfeb707
RB		 3210#endif
3211
635aebb7 3212#ifdef HAS_BUILTIN_EXPECT
b37c2d43
AL		 3213# define EXPECT(expr,val) __builtin_expect(expr,val)
3214#else
3215# define EXPECT(expr,val) (expr)
3216#endif
6d5abc62
NC		 3217#define LIKELY(cond) EXPECT(cBOOL(cond),TRUE)
3218#define UNLIKELY(cond) EXPECT(cBOOL(cond),FALSE)
635aebb7
AL		 3219#ifdef HAS_BUILTIN_CHOOSE_EXPR
3220/* placeholder */
3221#endif
b37c2d43 3222
ae103e09
DD		 3223
3224#ifndef __has_builtin
3225# define __has_builtin(x) 0 /* not a clang style compiler */
3226#endif
3227
3228/* ASSUME is like assert(), but it has a benefit in a release build. It is a
3229 hint to a compiler about a statement of fact in a function call free
3230 expression, which allows the compiler to generate better machine code.
3231 In a debug build, ASSUME(x) is a synonym for assert(x). ASSUME(0) means
3232 the control path is unreachable. In a for loop, ASSUME can be used to hint
3233 that a loop will run atleast X times. ASSUME is based off MSVC's __assume
3234 intrinsic function, see its documents for more details.
3235*/
3236
3237#ifndef DEBUGGING
3238# if __has_builtin(__builtin_unreachable) \
3239 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5 || __GNUC__ > 5) /* 4.5 -> */
3240# define ASSUME(x) ((x) ? (void) 0 : __builtin_unreachable())
3241# elif defined(_MSC_VER)
3242# define ASSUME(x) __assume(x)
3243# elif defined(__ARMCC_VERSION) /* untested */
3244# define ASSUME(x) __promise(x)
3245# else
3246/* a random compiler might define assert to its own special optimization token
3247 so pass it through to C lib as a last resort */
3248# define ASSUME(x) assert(x)
3249# endif
3250#else
3251# define ASSUME(x) assert(x)
3252#endif
3253
3254#define NOT_REACHED ASSUME(0)
3255
3fc1aec6 3256/* Some unistd.h's give a prototype for pause() even though
3257 HAS_PAUSE ends up undefined. This causes the #define
d2560b70 3258 below to be rejected by the compiler. Sigh.
3fc1aec6 3259*/
3260#ifdef HAS_PAUSE
3261#define Pause pause
3262#else
3263#define Pause() sleep((32767<<16)+32767)
748a9306
LW		 3264#endif
3265
3266#ifndef IOCPARM_LEN
3267# ifdef IOCPARM_MASK
61f1c44b 3268 /* on BSDish systems we're safe */
748a9306
LW		 3269# define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
3270# else
61f1c44b 3271# if defined(_IOC_SIZE) && defined(__GLIBC__)
301eb2f0
GA		 3272 /* on Linux systems we're safe; except when we're not [perl #38223] */
3273# define IOCPARM_LEN(x) (_IOC_SIZE(x) < 256 ? 256 : _IOC_SIZE(x))
61f1c44b 3274# else
748a9306 3275 /* otherwise guess at what's safe */
61f1c44b
JVD		 3276# define IOCPARM_LEN(x) 256
3277# endif
748a9306 3278# endif
a0d0e21e
LW		 3279#endif
3280
1761cee5 3281#if defined(__CYGWIN__)
521e0776
GS		 3282/* USEMYBINMODE
3283 * This symbol, if defined, indicates that the program should
16fe6d59 3284 * use the routine my_binmode(FILE *fp, char iotype, int mode) to insure
521e0776
GS		 3285 * that a file is in "binary" mode -- that is, that no translation
3286 * of bytes occurs on read or write operations.
3287 */
36894f0b 3288# define USEMYBINMODE /**/
77a40698 3289# include <io.h> /* for setmode() prototype */
16fe6d59 3290# define my_binmode(fp, iotype, mode) \
77a40698 3291 (PerlLIO_setmode(fileno(fp), mode) != -1 ? TRUE : FALSE)
5aabfad6 3292#endif
3293
88d10794
JH		 3294#ifdef __CYGWIN__
3295void init_os_extras(void);
3296#endif
3297
cea2e8a9
GS		 3298#ifdef UNION_ANY_DEFINITION
3299UNION_ANY_DEFINITION;
3300#else
3301union any {
3302 void* any_ptr;
3303 I32 any_i32;
ae103e09 3304 U32 any_u32;
cea2e8a9 3305 IV any_iv;
c6bf6a65 3306 UV any_uv;
cea2e8a9 3307 long any_long;
9febdf04 3308 bool any_bool;
c76ac1ee 3309 void (*any_dptr) (void*);
acfe0abc 3310 void (*any_dxptr) (pTHX_ void*);
cea2e8a9
GS		 3311};
3312#endif
3313
acfe0abc 3314typedef I32 (*filter_t) (pTHX_ int, SV *, int);
cea2e8a9
GS		 3315
3316#define FILTER_READ(idx, sv, len) filter_read(idx, sv, len)
5486870f
DM		 3317#define FILTER_DATA(idx) \
3318 (PL_parser ? AvARRAY(PL_parser->rsfp_filters)[idx] : NULL)
3319#define FILTER_ISREADER(idx) \
3320 (PL_parser && PL_parser->rsfp_filters \
3321 && idx >= AvFILLp(PL_parser->rsfp_filters))
3322#define PERL_FILTER_EXISTS(i) \
3323 (PL_parser && PL_parser->rsfp_filters \
b9f2b683 3324 && (i) <= av_tindex(PL_parser->rsfp_filters))
cea2e8a9 3325
c5078cac
JH		 3326#if defined(_AIX) && !defined(_AIX43)
3327#if defined(USE_REENTRANT) || defined(_REENTRANT) || defined(_THREAD_SAFE)
3328/* We cannot include <crypt.h> to get the struct crypt_data
3329 * because of setkey prototype problems when threading */
3330typedef struct crypt_data { /* straight from /usr/include/crypt.h */
3331 /* From OSF, Not needed in AIX
3332 char C[28], D[28];
3333 */
3334 char E[48];
3335 char KS[16][48];
3336 char block[66];
3337 char iobuf[16];
3338} CRYPTD;
3339#endif /* threading */
3340#endif /* AIX */
3341
e37778c2 3342#if !defined(OS2)
2c2d71f5
JH		 3343# include "iperlsys.h"
3344#endif
504f80c1 3345
9c12f1e5 3346#ifdef __LIBCATAMOUNT__
00f254e2 3347#undef HAS_PASSWD /* unixish.h but not unixish enough. */
9c12f1e5
RGS		 3348#undef HAS_GROUP
3349#define FAKE_BIT_BUCKET
3350#endif
3351
d10dc2ae
JH		 3352/* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0.
3353 * Note that the USE_HASH_SEED and USE_HASH_SEED_EXPLICIT are *NOT*
3354 * defined by Configure, despite their names being similar to the
3355 * other defines like USE_ITHREADS. Configure in fact knows nothing
3356 * about the randomised hashes. Therefore to enable/disable the hash
3357 * randomisation defines use the Configure -Accflags=... instead. */
504f80c1 3358#if !defined(NO_HASH_SEED) && !defined(USE_HASH_SEED) && !defined(USE_HASH_SEED_EXPLICIT)
4546b9e6 3359# define USE_HASH_SEED
504f80c1
JH		 3360#endif
3361
598921a7
NC		 3362/* Win32 defines a type 'WORD' in windef.h. This conflicts with the enumerator
3363 * 'WORD' defined in perly.h. The yytokentype enum is only a debugging aid, so
3364 * it's not really needed.
3365 */
3366#if defined(WIN32)
3367# define YYTOKENTYPE
3368#endif
3369#include "perly.h"
3370
598921a7 3371
654eccd5
JD		 3372/* macros to define bit-fields in structs. */
3373#ifndef PERL_BITFIELD8
3374# define PERL_BITFIELD8 unsigned
3375#endif
3376#ifndef PERL_BITFIELD16
3377# define PERL_BITFIELD16 unsigned
3378#endif
3379#ifndef PERL_BITFIELD32
3380# define PERL_BITFIELD32 unsigned
3381#endif
3382
79072805 3383#include "sv.h"
288b8c02 3384#include "regexp.h"
378cc40b 3385#include "util.h"
8d063cd8 3386#include "form.h"
79072805 3387#include "gv.h"
dd2155a4 3388#include "pad.h"
79072805 3389#include "cv.h"
abdd5c84 3390#include "opnames.h"
79072805 3391#include "op.h"
b3ca2e83 3392#include "hv.h"
79072805
LW		 3393#include "cop.h"
3394#include "av.h"
79072805
LW		 3395#include "mg.h"
3396#include "scope.h"
4438c4b7 3397#include "warnings.h"
a0ed51b3 3398#include "utf8.h"
8d063cd8 3399
0d7d409d
DM		 3400/* these would be in doio.h if there was such a file */
3401#define my_stat() my_stat_flags(SV_GMAGIC)
3402#define my_lstat() my_lstat_flags(SV_GMAGIC)
3403
20f4945e 3404/* defined in sv.c, but also used in [ach]v.c */
20f4945e
MHM		 3405#undef _XPV_HEAD
3406#undef _XPVMG_HEAD
3407#undef _XPVCV_COMMON
7fae4e64
GS		 3408
3409typedef struct _sublex_info SUBLEXINFO;
3410struct _sublex_info {
651b5b28
NC		 3411 U8 super_state; /* lexer state to save */
3412 U16 sub_inwhat; /* "lex_inwhat" to use */
7fae4e64 3413 OP *sub_op; /* "lex_op" to use */
7cc34111 3414 SV *repl; /* replacement of s/// or y/// */
7fae4e64
GS		 3415};
3416
199e78b7
DM		 3417#include "parser.h"
3418
455ece5e 3419typedef struct magic_state MGS; /* struct magic_state defined in mg.c */
76e3520e 3420
2260ab51
KW		 3421#if defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_REGEXEC_C)
3422
3423/* These have to be predeclared, as they are used in proto.h which is #included
3424 * before their definitions in regcomp.h. */
3425
3426struct scan_data_t;
7dcac5f6
KW		 3427typedef struct regnode_charclass regnode_charclass;
3428
2260ab51 3429struct regnode_charclass_class;
d1d040e5
KW		 3430
3431/* A hopefully less confusing name. The sub-classes are all Posix classes only
3432 * used under /l matching */
3433typedef struct regnode_charclass_class regnode_charclass_posixl;
3434
b8f7bb16 3435typedef struct regnode_ssc regnode_ssc;
09b2b2e6
KW		 3436typedef struct RExC_state_t RExC_state_t;
3437struct _reg_trie_data;
76e3520e 3438
2260ab51
KW		 3439#endif
3440
5f7fde29
GS		 3441struct ptr_tbl_ent {
3442 struct ptr_tbl_ent* next;
53c1dcc0 3443 const void* oldval;
5f7fde29 3444 void* newval;
d18c6117
GS		 3445};
3446
5f7fde29
GS		 3447struct ptr_tbl {
3448 struct ptr_tbl_ent** tbl_ary;
3449 UV tbl_max;
3450 UV tbl_items;
db93c0c4
NC		 3451 struct ptr_tbl_arena *tbl_arena;
3452 struct ptr_tbl_ent *tbl_arena_next;
3453 struct ptr_tbl_ent *tbl_arena_end;
d18c6117
GS		 3454};
3455
fe14fcc3
LW		 3456#if defined(htonl) && !defined(HAS_HTONL)
3457#define HAS_HTONL
ae986130 3458#endif
fe14fcc3
LW		 3459#if defined(htons) && !defined(HAS_HTONS)
3460#define HAS_HTONS
ae986130 3461#endif
fe14fcc3
LW		 3462#if defined(ntohl) && !defined(HAS_NTOHL)
3463#define HAS_NTOHL
ae986130 3464#endif
fe14fcc3
LW		 3465#if defined(ntohs) && !defined(HAS_NTOHS)
3466#define HAS_NTOHS
ae986130 3467#endif
fe14fcc3 3468#ifndef HAS_HTONL
fe14fcc3
LW		 3469#define HAS_HTONS
3470#define HAS_HTONL
3471#define HAS_NTOHS
3472#define HAS_NTOHL
8e2d7c44
NC		 3473# if (BYTEORDER & 0xffff) == 0x4321
3474/* Big endian system, so ntohl, ntohs, htonl and htons do not need to
3475 re-order their values. However, to behave identically to the alternative
3476 implementations, they should truncate to the correct size. */
3477# define ntohl(x) ((x)&0xFFFFFFFF)
3478# define htonl(x) ntohl(x)
3479# define ntohs(x) ((x)&0xFFFF)
3480# define htons(x) ntohs(x)
e4b03fed
NC		 3481# elif BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
3482
3483/* Note that we can't straight out declare our own htonl and htons because
3484 the Win32 build process forcibly undefines HAS_HTONL etc for its miniperl,
3485 to avoid the overhead of initialising the socket subsystem, but the headers
3486 that *declare* the various functions are still seen. If we declare our own
3487 htonl etc they will clash with the declarations in the Win32 headers. */
3488
3489PERL_STATIC_INLINE U32
3490my_swap32(const U32 x) {
3491 return ((x & 0xFF) << 24) | ((x >> 24) & 0xFF)
3492 | ((x & 0x0000FF00) << 8) | ((x & 0x00FF0000) >> 8);
3493}
3494
3495PERL_STATIC_INLINE U16
3496my_swap16(const U16 x) {
3497 return ((x & 0xFF) << 8) | ((x >> 8) & 0xFF);
3498}
3499
3500# define htonl(x) my_swap32(x)
3501# define ntohl(x) my_swap32(x)
3502# define ntohs(x) my_swap16(x)
3503# define htons(x) my_swap16(x)
8e2d7c44 3504# else
691a44df
NC		 3505# error "Unsupported byteorder"
3506/* The C pre-processor doesn't let us return the value of BYTEORDER as part of
3507 the error message. Please check the value of the macro BYTEORDER, as defined
3508 in config.h. The values of BYTEORDER we expect are
3509
3510 big endian little endian
3511 32 bit 0x4321 0x1234
3512 64 bit 0x87654321 0x12345678
3513
3514 If you have a system with a different byte order, please see
3515 pod/perlhack.pod for how to submit a patch to add supporting code.
3516*/
3517# endif
a687059c
LW		 3518#endif
3519
988174c1
LW		 3520/*
3521 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
3522 * -DWS
3523 */
5ae72479 3524#if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
260c6fee
NC		 3525/* Little endian system, so vtohl, vtohs, htovl and htovs do not need to
3526 re-order their values. However, to behave identically to the alternative
3527 implementations, they should truncate to the correct size. */
3528# define vtohl(x) ((x)&0xFFFFFFFF)
3529# define vtohs(x) ((x)&0xFFFF)
3530# define htovl(x) vtohl(x)
3531# define htovs(x) vtohs(x)
545872c5 3532#elif BYTEORDER == 0x4321 || BYTEORDER == 0x87654321
988174c1
LW		 3533# define vtohl(x) ((((x)&0xFF)<<24) \
3534 +(((x)>>24)&0xFF) \
3535 +(((x)&0x0000FF00)<<8) \
3536 +(((x)&0x00FF0000)>>8) )
3537# define vtohs(x) ((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
3538# define htovl(x) vtohl(x)
3539# define htovs(x) vtohs(x)
545872c5
NC		 3540#else
3541# error "Unsupported byteorder"
3542/* If you have need for current perl on PDP-11 or similar, and can help test
3543 that blead keeps working on a mixed-endian system, then see
3544 pod/perlhack.pod for how to submit patches to things working again. */
2a8c3029 3545#endif
988174c1 3546
3bb7c1b4
JH		 3547/* *MAX Plus 1. A floating point value.
3548 Hopefully expressed in a way that dodgy floating point can't mess up.
3549 >> 2 rather than 1, so that value is safely less than I32_MAX after 1
3550 is added to it
3551 May find that some broken compiler will want the value cast to I32.
3552 [after the shift, as signed >> may not be as secure as unsigned >>]
3553*/
3554#define I32_MAX_P1 (2.0 * (1 + (((U32)I32_MAX) >> 1)))
3555#define U32_MAX_P1 (4.0 * (1 + ((U32_MAX) >> 2)))
3556/* For compilers that can't correctly cast NVs over 0x7FFFFFFF (or
3557 0x7FFFFFFFFFFFFFFF) to an unsigned integer. In the future, sizeof(UV)
3558 may be greater than sizeof(IV), so don't assume that half max UV is max IV.
3559*/
3560#define U32_MAX_P1_HALF (2.0 * (1 + ((U32_MAX) >> 2)))
ee0007ab 3561
3bb7c1b4
JH		 3562#define UV_MAX_P1 (4.0 * (1 + ((UV_MAX) >> 2)))
3563#define IV_MAX_P1 (2.0 * (1 + (((UV)IV_MAX) >> 1)))
3564#define UV_MAX_P1_HALF (2.0 * (1 + ((UV_MAX) >> 2)))
3565
3566/* This may look like unnecessary jumping through hoops, but converting
3567 out of range floating point values to integers *is* undefined behaviour,
3568 and it is starting to bite.
3569*/
3570#ifndef CAST_INLINE
65202027 3571#define I_32(what) (cast_i32((NV)(what)))
3bb7c1b4 3572#define U_32(what) (cast_ulong((NV)(what)))
65202027
DS		 3573#define I_V(what) (cast_iv((NV)(what)))
3574#define U_V(what) (cast_uv((NV)(what)))
3bb7c1b4
JH		 3575#else
3576#define I_32(n) ((n) < I32_MAX_P1 ? ((n) < I32_MIN ? I32_MIN : (I32) (n)) \
3577 : ((n) < U32_MAX_P1 ? (I32)(U32) (n) \
3578 : ((n) > 0 ? (I32) U32_MAX : 0 /* NaN */)))
3579#define U_32(n) ((n) < 0.0 ? ((n) < I32_MIN ? (UV) I32_MIN : (U32)(I32) (n)) \
3580 : ((n) < U32_MAX_P1 ? (U32) (n) \
3581 : ((n) > 0 ? U32_MAX : 0 /* NaN */)))
5d9574c1
DM		 3582#define I_V(n) (LIKELY((n) < IV_MAX_P1) ? (UNLIKELY((n) < IV_MIN) ? IV_MIN : (IV) (n)) \
3583 : (LIKELY((n) < UV_MAX_P1) ? (IV)(UV) (n) \
3bb7c1b4 3584 : ((n) > 0 ? (IV)UV_MAX : 0 /* NaN */)))
5d9574c1
DM		 3585#define U_V(n) ((n) < 0.0 ? (UNLIKELY((n) < IV_MIN) ? (UV) IV_MIN : (UV)(IV) (n)) \
3586 : (LIKELY((n) < UV_MAX_P1) ? (UV) (n) \
3bb7c1b4
JH		 3587 : ((n) > 0 ? UV_MAX : 0 /* NaN */)))
3588#endif
3589
3590#define U_S(what) ((U16)U_32(what))
3591#define U_I(what) ((unsigned int)U_32(what))
3592#define U_L(what) U_32(what)
ed6116ce 3593
ed140128
AD		 3594#ifdef HAS_SIGNBIT
3595# define Perl_signbit signbit
3596#endif
3597
2d4389e4
JH		 3598/* These do not care about the fractional part, only about the range. */
3599#define NV_WITHIN_IV(nv) (I_V(nv) >= IV_MIN && I_V(nv) <= IV_MAX)
24db6c0d 3600#define NV_WITHIN_UV(nv) ((nv)>=0.0 && U_V(nv) >= UV_MIN && U_V(nv) <= UV_MAX)
2d4389e4 3601
25da4f38
IZ		 3602/* Used with UV/IV arguments: */
3603 /* XXXX: need to speed it up */
3604#define CLUMP_2UV(iv) ((iv) < 0 ? 0 : (UV)(iv))
3605#define CLUMP_2IV(uv) ((uv) > (UV)IV_MAX ? IV_MAX : (IV)(uv))
3606
352d5a3a
LW		 3607#ifndef MAXSYSFD
3608# define MAXSYSFD 2
3609#endif
ee0007ab 3610
79072805 3611#ifndef __cplusplus
e37d7e38 3612#if !(defined(WIN32) || defined(UNDER_CE) || defined(SYMBIAN))
20ce7b12
GS		 3613Uid_t getuid (void);
3614Uid_t geteuid (void);
3615Gid_t getgid (void);
3616Gid_t getegid (void);
79072805 3617#endif
e1caacb4 3618#endif
8d063cd8 3619
0c30d9ec 3620#ifndef Perl_debug_log
bf49b057
GS		 3621# define Perl_debug_log PerlIO_stderr()
3622#endif
3623
3624#ifndef Perl_error_log
3625# define Perl_error_log (PL_stderrgv \
6b78add2 3626 && isGV(PL_stderrgv) \
01bb7c6d 3627 && GvIOp(PL_stderrgv) \
42de951c 3628 && IoOFP(GvIOp(PL_stderrgv)) \
bf49b057
GS		 3629 ? IoOFP(GvIOp(PL_stderrgv)) \
3630 : PerlIO_stderr())
0c30d9ec 3631#endif
3967c732 3632
aea4f609
DM		 3633
3634#define DEBUG_p_FLAG 0x00000001 /* 1 */
3635#define DEBUG_s_FLAG 0x00000002 /* 2 */
3636#define DEBUG_l_FLAG 0x00000004 /* 4 */
3637#define DEBUG_t_FLAG 0x00000008 /* 8 */
3638#define DEBUG_o_FLAG 0x00000010 /* 16 */
3639#define DEBUG_c_FLAG 0x00000020 /* 32 */
3640#define DEBUG_P_FLAG 0x00000040 /* 64 */
3641#define DEBUG_m_FLAG 0x00000080 /* 128 */
3642#define DEBUG_f_FLAG 0x00000100 /* 256 */
3643#define DEBUG_r_FLAG 0x00000200 /* 512 */
3644#define DEBUG_x_FLAG 0x00000400 /* 1024 */
3645#define DEBUG_u_FLAG 0x00000800 /* 2048 */
88d2d28a
JC		 3646/* U is reserved for Unofficial, exploratory hacking */
3647#define DEBUG_U_FLAG 0x00001000 /* 4096 */
aea4f609
DM		 3648#define DEBUG_H_FLAG 0x00002000 /* 8192 */
3649#define DEBUG_X_FLAG 0x00004000 /* 16384 */
3650#define DEBUG_D_FLAG 0x00008000 /* 32768 */
56967202 3651#define DEBUG_S_FLAG 0x00010000 /* 65536 */
aea4f609 3652#define DEBUG_T_FLAG 0x00020000 /* 131072 */
04932ac8 3653#define DEBUG_R_FLAG 0x00040000 /* 262144 */
1045810a 3654#define DEBUG_J_FLAG 0x00080000 /* 524288 */
d6721266 3655#define DEBUG_v_FLAG 0x00100000 /*1048576 */
46187eeb 3656#define DEBUG_C_FLAG 0x00200000 /*2097152 */
ecae49c0 3657#define DEBUG_A_FLAG 0x00400000 /*4194304 */
a3c98653 3658#define DEBUG_q_FLAG 0x00800000 /*8388608 */
cc8773c0
CS		 3659#define DEBUG_M_FLAG 0x01000000 /*16777216*/
3660#define DEBUG_B_FLAG 0x02000000 /*33554432*/
69014004
KW		 3661#define DEBUG_L_FLAG 0x04000000 /*67108864*/
3662#define DEBUG_MASK 0x07FFEFFF /* mask of all the standard flags */
aea4f609
DM		 3663
3664#define DEBUG_DB_RECURSE_FLAG 0x40000000
1045810a
IZ		 3665#define DEBUG_TOP_FLAG 0x80000000 /* XXX what's this for ??? Signal
3666 that something was done? */
aea4f609 3667
bd16a5f0
IZ		 3668# define DEBUG_p_TEST_ (PL_debug & DEBUG_p_FLAG)
3669# define DEBUG_s_TEST_ (PL_debug & DEBUG_s_FLAG)
3670# define DEBUG_l_TEST_ (PL_debug & DEBUG_l_FLAG)
3671# define DEBUG_t_TEST_ (PL_debug & DEBUG_t_FLAG)
3672# define DEBUG_o_TEST_ (PL_debug & DEBUG_o_FLAG)
3673# define DEBUG_c_TEST_ (PL_debug & DEBUG_c_FLAG)
3674# define DEBUG_P_TEST_ (PL_debug & DEBUG_P_FLAG)
3675# define DEBUG_m_TEST_ (PL_debug & DEBUG_m_FLAG)
3676# define DEBUG_f_TEST_ (PL_debug & DEBUG_f_FLAG)
3677# define DEBUG_r_TEST_ (PL_debug & DEBUG_r_FLAG)
3678# define DEBUG_x_TEST_ (PL_debug & DEBUG_x_FLAG)
3679# define DEBUG_u_TEST_ (PL_debug & DEBUG_u_FLAG)
88d2d28a 3680# define DEBUG_U_TEST_ (PL_debug & DEBUG_U_FLAG)
bd16a5f0
IZ		 3681# define DEBUG_H_TEST_ (PL_debug & DEBUG_H_FLAG)
3682# define DEBUG_X_TEST_ (PL_debug & DEBUG_X_FLAG)
3683# define DEBUG_D_TEST_ (PL_debug & DEBUG_D_FLAG)
56967202 3684# define DEBUG_S_TEST_ (PL_debug & DEBUG_S_FLAG)
bd16a5f0
IZ		 3685# define DEBUG_T_TEST_ (PL_debug & DEBUG_T_FLAG)
3686# define DEBUG_R_TEST_ (PL_debug & DEBUG_R_FLAG)
1045810a 3687# define DEBUG_J_TEST_ (PL_debug & DEBUG_J_FLAG)
d6721266 3688# define DEBUG_v_TEST_ (PL_debug & DEBUG_v_FLAG)
46187eeb 3689# define DEBUG_C_TEST_ (PL_debug & DEBUG_C_FLAG)
ecae49c0
NC		 3690# define DEBUG_A_TEST_ (PL_debug & DEBUG_A_FLAG)
3691# define DEBUG_q_TEST_ (PL_debug & DEBUG_q_FLAG)
d7c0d282 3692# define DEBUG_M_TEST_ (PL_debug & DEBUG_M_FLAG)
cc8773c0 3693# define DEBUG_B_TEST_ (PL_debug & DEBUG_B_FLAG)
69014004 3694# define DEBUG_L_TEST_ (PL_debug & DEBUG_L_FLAG)
dd2155a4 3695# define DEBUG_Xv_TEST_ (DEBUG_X_TEST_ && DEBUG_v_TEST_)
7949c6f5 3696# define DEBUG_Uv_TEST_ (DEBUG_U_TEST_ && DEBUG_v_TEST_)
ad9e76a8 3697# define DEBUG_Pv_TEST_ (DEBUG_P_TEST_ && DEBUG_v_TEST_)
bd16a5f0 3698
3967c732 3699#ifdef DEBUGGING
aea4f609 3700
bd16a5f0
IZ		 3701# define DEBUG_p_TEST DEBUG_p_TEST_
3702# define DEBUG_s_TEST DEBUG_s_TEST_
3703# define DEBUG_l_TEST DEBUG_l_TEST_
3704# define DEBUG_t_TEST DEBUG_t_TEST_
3705# define DEBUG_o_TEST DEBUG_o_TEST_
3706# define DEBUG_c_TEST DEBUG_c_TEST_
3707# define DEBUG_P_TEST DEBUG_P_TEST_
3708# define DEBUG_m_TEST DEBUG_m_TEST_
3709# define DEBUG_f_TEST DEBUG_f_TEST_
3710# define DEBUG_r_TEST DEBUG_r_TEST_
3711# define DEBUG_x_TEST DEBUG_x_TEST_
3712# define DEBUG_u_TEST DEBUG_u_TEST_
88d2d28a 3713# define DEBUG_U_TEST DEBUG_U_TEST_
bd16a5f0
IZ		 3714# define DEBUG_H_TEST DEBUG_H_TEST_
3715# define DEBUG_X_TEST DEBUG_X_TEST_
3716# define DEBUG_D_TEST DEBUG_D_TEST_
56967202 3717# define DEBUG_S_TEST DEBUG_S_TEST_
bd16a5f0
IZ		 3718# define DEBUG_T_TEST DEBUG_T_TEST_
3719# define DEBUG_R_TEST DEBUG_R_TEST_
1045810a 3720# define DEBUG_J_TEST DEBUG_J_TEST_
d6721266 3721# define DEBUG_v_TEST DEBUG_v_TEST_
46187eeb 3722# define DEBUG_C_TEST DEBUG_C_TEST_
ecae49c0 3723# define DEBUG_A_TEST DEBUG_A_TEST_
a3c98653 3724# define DEBUG_q_TEST DEBUG_q_TEST_
d7c0d282 3725# define DEBUG_M_TEST DEBUG_M_TEST_
cc8773c0 3726# define DEBUG_B_TEST DEBUG_B_TEST_
69014004 3727# define DEBUG_L_TEST DEBUG_L_TEST_
7949c6f5
JC		 3728# define DEBUG_Xv_TEST DEBUG_Xv_TEST_
3729# define DEBUG_Uv_TEST DEBUG_Uv_TEST_
ad9e76a8 3730# define DEBUG_Pv_TEST DEBUG_Pv_TEST_
aea4f609 3731
488b0c7a
JH		 3732# define PERL_DEB(a) a
3733# define PERL_DEBUG(a) if (PL_debug) a
aea4f609
DM		 3734# define DEBUG_p(a) if (DEBUG_p_TEST) a
3735# define DEBUG_s(a) if (DEBUG_s_TEST) a
3736# define DEBUG_l(a) if (DEBUG_l_TEST) a
3737# define DEBUG_t(a) if (DEBUG_t_TEST) a