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Simplify perl.h floating-point limits defines
[perl5.git] / perl.h
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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
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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
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21#undef USE_STDIO
22#define USE_STDIO
23#endif /* PERL_FOR_X2P */
24
d460ef45 25#ifdef PERL_MICRO
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26# include "uconfig.h"
27#else
611cf957 28# include "config.h"
12ae5dfc 29#endif
0cb96387 30
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31/* this is used for functions which take a depth trailing
32 * argument under debugging */
33#ifdef DEBUGGING
34#define _pDEPTH ,U32 depth
35#define _aDEPTH ,depth
36#else
37#define _pDEPTH
38#define _aDEPTH
39#endif
40
7dc3eb73 41/* NOTE 1: that with gcc -std=c89 the __STDC_VERSION__ is *not* defined
9267464d 42 * because the __STDC_VERSION__ became a thing only with C90. Therefore,
7dc3eb73
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43 * with gcc, HAS_C99 will never become true as long as we use -std=c89.
44
45 * NOTE 2: headers lie. Do not expect that if HAS_C99 gets to be true,
46 * all the C99 features are there and are correct. */
9267464d 47#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \
996959af 48 defined(_STDC_C99) || defined(__c99)
86a3cabf 49# define HAS_C99 1
86a3cabf
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50#endif
51
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52/* See L<perlguts/"The Perl API"> for detailed notes on
53 * PERL_IMPLICIT_CONTEXT and PERL_IMPLICIT_SYS */
54
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55/* Note that from here --> to <-- the same logic is
56 * repeated in makedef.pl, so be certain to update
57 * both places when editing. */
58
6f4183fe 59#ifdef USE_ITHREADS
acfe0abc 60# if !defined(MULTIPLICITY)
6f4183fe
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61# define MULTIPLICITY
62# endif
63#endif
64
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65#ifdef PERL_GLOBAL_STRUCT_PRIVATE
66# ifndef PERL_GLOBAL_STRUCT
67# define PERL_GLOBAL_STRUCT
68# endif
69#endif
97aff369 70
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71#ifdef PERL_GLOBAL_STRUCT
72# ifndef MULTIPLICITY
73# define MULTIPLICITY
74# endif
75#endif
76
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77#ifdef MULTIPLICITY
78# ifndef PERL_IMPLICIT_CONTEXT
79# define PERL_IMPLICIT_CONTEXT
80# endif
81#endif
82
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83/* undef WIN32 when building on Cygwin (for libwin32) - gph */
84#ifdef __CYGWIN__
85# undef WIN32
86# undef _WIN32
87#endif
88
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89#if defined(__SYMBIAN32__) || (defined(__VC32__) && defined(WINS))
90# ifndef SYMBIAN
91# define SYMBIAN
92# endif
93#endif
94
a0fd4948 95#ifdef __SYMBIAN32__
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96# include "symbian/symbian_proto.h"
97#endif
98
99/* Any stack-challenged places. The limit varies (and often
100 * is configurable), but using more than a kilobyte of stack
101 * is usually dubious in these systems. */
739a0b84
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102#if defined(__SYMBIAN32__)
103/* Symbian: need to work around the SDK features. *
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104 * On WINS: MS VC5 generates calls to _chkstk, *
105 * if a "large" stack frame is allocated. *
106 * gcc on MARM does not generate calls like these. */
107# define USE_HEAP_INSTEAD_OF_STACK
108#endif
109
dd134d2c 110/* Use the reentrant APIs like localtime_r and getpwent_r */
10bc17b6 111/* Win32 has naturally threadsafe libraries, no need to use any _r variants. */
14795193 112#if defined(USE_ITHREADS) && !defined(USE_REENTRANT_API) && !defined(NETWARE) && !defined(WIN32)
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113# define USE_REENTRANT_API
114#endif
115
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116/* <--- here ends the logic shared by perl.h and makedef.pl */
117
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118/* Microsoft Visual C++ 6.0 needs special treatment in numerous places */
119#if defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1200 && _MSC_VER < 1300
120# define USING_MSVC6
121#endif
122
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123#undef START_EXTERN_C
124#undef END_EXTERN_C
125#undef EXTERN_C
126#ifdef __cplusplus
127# define START_EXTERN_C extern "C" {
128# define END_EXTERN_C }
129# define EXTERN_C extern "C"
130#else
131# define START_EXTERN_C
132# define END_EXTERN_C
133# define EXTERN_C extern
134#endif
135
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136/* Fallback definitions in case we don't have definitions from config.h.
137 This should only matter for systems that don't use Configure and
138 haven't been modified to define PERL_STATIC_INLINE yet.
139*/
140#if !defined(PERL_STATIC_INLINE)
141# ifdef HAS_STATIC_INLINE
142# define PERL_STATIC_INLINE static inline
143# else
144# define PERL_STATIC_INLINE static
145# endif
146#endif
147
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148#ifdef PERL_GLOBAL_STRUCT
149# ifndef PERL_GET_VARS
150# ifdef PERL_GLOBAL_STRUCT_PRIVATE
cf5a8da6 151 EXTERN_C struct perl_vars* Perl_GetVarsPrivate();
27da23d5 152# define PERL_GET_VARS() Perl_GetVarsPrivate() /* see miniperlmain.c */
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153# else
154# define PERL_GET_VARS() PL_VarsPtr
155# endif
156# endif
157#endif
158
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159/* this used to be off by default, now its on, see perlio.h */
160#define PERLIO_FUNCS_CONST
161
5aaab254 162#define pVAR struct perl_vars* my_vars PERL_UNUSED_DECL
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163
164#ifdef PERL_GLOBAL_STRUCT
165# define dVAR pVAR = (struct perl_vars*)PERL_GET_VARS()
166#else
167# define dVAR dNOOP
168#endif
169
c5be433b 170#ifdef PERL_IMPLICIT_CONTEXT
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171# ifndef MULTIPLICITY
172# define MULTIPLICITY
c5be433b 173# endif
e8dda941 174# define tTHX PerlInterpreter*
5aaab254 175# define pTHX tTHX my_perl PERL_UNUSED_DECL
3db8f154 176# define aTHX my_perl
9399a70c 177# define aTHXa(a) aTHX = (tTHX)a
27da23d5 178# ifdef PERL_GLOBAL_STRUCT
e8dda941 179# define dTHXa(a) dVAR; pTHX = (tTHX)a
27da23d5 180# else
e8dda941 181# define dTHXa(a) pTHX = (tTHX)a
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182# endif
183# ifdef PERL_GLOBAL_STRUCT
184# define dTHX dVAR; pTHX = PERL_GET_THX
185# else
186# define dTHX pTHX = PERL_GET_THX
187# endif
c5be433b 188# define pTHX_ pTHX,
c5be433b 189# define aTHX_ aTHX,
4373e329 190# define pTHX_1 2
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191# define pTHX_2 3
192# define pTHX_3 4
193# define pTHX_4 5
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194# define pTHX_5 6
195# define pTHX_6 7
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196# define pTHX_7 8
197# define pTHX_8 9
198# define pTHX_9 10
a6fc70e5 199# define pTHX_12 13
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200# if defined(DEBUGGING) && !defined(PERL_TRACK_MEMPOOL)
201# define PERL_TRACK_MEMPOOL
202# endif
203#else
204# undef PERL_TRACK_MEMPOOL
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205#endif
206
76e3520e 207#define STATIC static
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208
209#ifndef PERL_CORE
210/* Do not use these macros. They were part of PERL_OBJECT, which was an
211 * implementation of multiplicity using C++ objects. They have been left
212 * here solely for the sake of XS code which has incorrectly
213 * cargo-culted them.
214 */
76e3520e 215#define CPERLscope(x) x
565764a8 216#define CPERLarg void
76e3520e 217#define CPERLarg_
e3b8966e 218#define _CPERLarg
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219#define PERL_OBJECT_THIS
220#define _PERL_OBJECT_THIS
221#define PERL_OBJECT_THIS_
312caa8e 222#define CALL_FPTR(fptr) (*fptr)
ef69c8fc 223#define MEMBER_TO_FPTR(name) name
16c91539 224#endif /* !PERL_CORE */
76e3520e 225
16c91539 226#define CALLRUNOPS PL_runops
f9f4320a 227
3ab4a224 228#define CALLREGCOMP(sv, flags) Perl_pregcomp(aTHX_ (sv),(flags))
f9f4320a 229
16c91539 230#define CALLREGCOMP_ENG(prog, sv, flags) (prog)->comp(aTHX_ sv, flags)
a340edde 231#define CALLREGEXEC(prog,stringarg,strend,strbeg,minend,sv,data,flags) \
16c91539 232 RX_ENGINE(prog)->exec(aTHX_ (prog),(stringarg),(strend), \
a340edde 233 (strbeg),(minend),(sv),(data),(flags))
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234#define CALLREG_INTUIT_START(prog,sv,strbeg,strpos,strend,flags,data) \
235 RX_ENGINE(prog)->intuit(aTHX_ (prog), (sv), (strbeg), (strpos), \
f9f4320a
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236 (strend),(flags),(data))
237#define CALLREG_INTUIT_STRING(prog) \
16c91539 238 RX_ENGINE(prog)->checkstr(aTHX_ (prog))
f8149455 239
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240#define CALLREGFREE(prog) \
241 Perl_pregfree(aTHX_ (prog))
242
243#define CALLREGFREE_PVT(prog) \
fc6bde6f 244 if(prog) RX_ENGINE(prog)->rxfree(aTHX_ (prog))
f8149455 245
2fdbfb4d 246#define CALLREG_NUMBUF_FETCH(rx,paren,usesv) \
16c91539 247 RX_ENGINE(rx)->numbered_buff_FETCH(aTHX_ (rx),(paren),(usesv))
93b32b6d 248
2fdbfb4d 249#define CALLREG_NUMBUF_STORE(rx,paren,value) \
16c91539 250 RX_ENGINE(rx)->numbered_buff_STORE(aTHX_ (rx),(paren),(value))
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251
252#define CALLREG_NUMBUF_LENGTH(rx,sv,paren) \
16c91539 253 RX_ENGINE(rx)->numbered_buff_LENGTH(aTHX_ (rx),(sv),(paren))
2fdbfb4d 254
192b9cd1 255#define CALLREG_NAMED_BUFF_FETCH(rx, key, flags) \
16c91539 256 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_FETCH))
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257
258#define CALLREG_NAMED_BUFF_STORE(rx, key, value, flags) \
16c91539 259 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), (value), ((flags) | RXapif_STORE))
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260
261#define CALLREG_NAMED_BUFF_DELETE(rx, key, flags) \
16c91539 262 RX_ENGINE(rx)->named_buff(aTHX_ (rx),(key), NULL, ((flags) | RXapif_DELETE))
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263
264#define CALLREG_NAMED_BUFF_CLEAR(rx, flags) \
16c91539 265 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_CLEAR))
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266
267#define CALLREG_NAMED_BUFF_EXISTS(rx, key, flags) \
16c91539 268 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_EXISTS))
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269
270#define CALLREG_NAMED_BUFF_FIRSTKEY(rx, flags) \
16c91539 271 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), NULL, ((flags) | RXapif_FIRSTKEY))
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272
273#define CALLREG_NAMED_BUFF_NEXTKEY(rx, lastkey, flags) \
16c91539 274 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), (lastkey), ((flags) | RXapif_NEXTKEY))
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275
276#define CALLREG_NAMED_BUFF_SCALAR(rx, flags) \
16c91539 277 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_SCALAR))
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278
279#define CALLREG_NAMED_BUFF_COUNT(rx) \
16c91539 280 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, RXapif_REGNAMES_COUNT)
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281
282#define CALLREG_NAMED_BUFF_ALL(rx, flags) \
16c91539 283 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, flags)
93b32b6d 284
49d7dfbc 285#define CALLREG_PACKAGE(rx) \
16c91539 286 RX_ENGINE(rx)->qr_package(aTHX_ (rx))
93b32b6d 287
00f254e2 288#if defined(USE_ITHREADS)
f9f4320a 289#define CALLREGDUPE(prog,param) \
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290 Perl_re_dup(aTHX_ (prog),(param))
291
292#define CALLREGDUPE_PVT(prog,param) \
16c91539 293 (prog ? RX_ENGINE(prog)->dupe(aTHX_ (prog),(param)) \
00f254e2 294 : (REGEXP *)NULL)
f9f4320a 295#endif
14dd3ad8 296
a20207d7 297
bcdf7404 298
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299
300
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301/*
302 * Because of backward compatibility reasons the PERL_UNUSED_DECL
303 * cannot be changed from postfix to PERL_UNUSED_DECL(x). Sigh.
304 *
305 * Note that there are C compilers such as MetroWerks CodeWarrior
1266ad8c 306 * which do not have an "inlined" way (like the gcc __attribute__) of
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307 * marking unused variables (they need e.g. a #pragma) and therefore
308 * cpp macros like PERL_UNUSED_DECL cannot work for this purpose, even
309 * if it were PERL_UNUSED_DECL(x), which it cannot be (see above).
310 *
311 */
1266ad8c 312
9969cdde 313#if defined(__SYMBIAN32__) && defined(__GNUC__)
5b2bd0a5 314# ifdef __cplusplus
5ba4cab2 315# define PERL_UNUSED_DECL
5b2bd0a5 316# else
5ba4cab2 317# define PERL_UNUSED_DECL __attribute__((unused))
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318# endif
319#endif
44dbb695 320
5b2bd0a5 321#ifndef PERL_UNUSED_DECL
f7a9299a 322# if defined(HASATTRIBUTE_UNUSED) && (!defined(__cplusplus) || (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
5ba4cab2 323# define PERL_UNUSED_DECL __attribute__unused__
b79c357a 324# else
5ba4cab2 325# define PERL_UNUSED_DECL
b79c357a 326# endif
5b2bd0a5 327#endif
00f254e2 328
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329/* gcc -Wall:
330 * for silencing unused variables that are actually used most of the time,
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331 * but we cannot quite get rid of, such as "ax" in PPCODE+noargs xsubs,
332 * or variables/arguments that are used only in certain configurations.
349b520e 333 */
53c1dcc0 334#ifndef PERL_UNUSED_ARG
c707756e 335# define PERL_UNUSED_ARG(x) ((void)sizeof(x))
ad73156c 336#endif
53c1dcc0 337#ifndef PERL_UNUSED_VAR
a730e3f2 338# define PERL_UNUSED_VAR(x) ((void)sizeof(x))
53c1dcc0 339#endif
ad73156c 340
23491f1d 341#if defined(USE_ITHREADS) || defined(PERL_GLOBAL_STRUCT)
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342# define PERL_UNUSED_CONTEXT PERL_UNUSED_ARG(my_perl)
343#else
344# define PERL_UNUSED_CONTEXT
345#endif
346
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347/* gcc (-ansi) -pedantic doesn't allow gcc statement expressions,
348 * g++ allows them but seems to have problems with them
349 * (insane errors ensue).
350 * g++ does not give insane errors now (RMB 2008-01-30, gcc 4.2.2).
351 */
352#if defined(PERL_GCC_PEDANTIC) || \
353 (defined(__GNUC__) && defined(__cplusplus) && \
354 ((__GNUC__ < 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ < 2))))
355# ifndef PERL_GCC_BRACE_GROUPS_FORBIDDEN
356# define PERL_GCC_BRACE_GROUPS_FORBIDDEN
357# endif
358#endif
359
ffea512f 360/* Use PERL_UNUSED_RESULT() to suppress the warnings about unused results
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361 * of function calls, e.g. PERL_UNUSED_RESULT(foo(a, b)).
362 *
363 * The main reason for this is that the combination of gcc -Wunused-result
364 * (part of -Wall) and the __attribute__((warn_unused_result)) cannot
365 * be silenced with casting to void. This causes trouble when the system
366 * header files use the attribute.
367 *
368 * Use PERL_UNUSED_RESULT sparingly, though, since usually the warning
369 * is there for a good reason: you might lose success/failure information,
370 * or leak resources, or changes in resources.
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371 *
372 * But sometimes you just want to ignore the return value, e.g. on
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373 * codepaths soon ending up in abort, or in "best effort" attempts,
374 * or in situations where there is no good way to handle failures.
ffea512f 375 *
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376 * Sometimes PERL_UNUSED_RESULT might not be the most natural way:
377 * another possibility is that you can capture the return value
378 * and use PERL_UNUSED_VAR on that.
ffea512f 379 *
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380 * The __typeof__() is used instead of typeof() since typeof() is not
381 * available under strict C89, and because of compilers masquerading
382 * as gcc (clang and icc), we want exactly the gcc extension
383 * __typeof__ and nothing else.
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384 */
385#ifndef PERL_UNUSED_RESULT
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386# if defined(__GNUC__) && defined(HASATTRIBUTE_WARN_UNUSED_RESULT)
387# define PERL_UNUSED_RESULT(v) STMT_START { __typeof__(v) z = (v); (void)sizeof(z); } STMT_END
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388# else
389# define PERL_UNUSED_RESULT(v) ((void)(v))
390# endif
391#endif
392
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393/* on gcc (and clang), specify that a warning should be temporarily
394 * ignored; e.g.
395 *
396 * GCC_DIAG_IGNORE(-Wmultichar);
397 * char b = 'ab';
398 * GCC_DIAG_RESTORE;
399 *
400 * based on http://dbp-consulting.com/tutorials/SuppressingGCCWarnings.html
401 *
402 * Note that "pragma GCC diagnostic push/pop" was added in GCC 4.6, Mar 2011;
403 * clang only pretends to be GCC 4.2, but still supports push/pop.
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404 *
405 * Note on usage: on non-gcc (or lookalike, like clang) compilers
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406 * one cannot use these with a semicolon at file (global) level without
407 * warnings since they are defined as empty, which leads into the terminating
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408 * semicolon being left alone on a line:
409 * ;
410 * which makes compilers mildly cranky. Therefore at file level one
95b872d5 411 * should use the GCC_DIAG_IGNORE and GCC_DIAG_RESTORE macros *without*
6ab56f1e 412 * the semicolons.
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413 *
414 * (A dead-on-arrival solution would be to try to define the macros as
415 * NOOP or dNOOP, those don't work both inside functions and outside.)
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416 */
417
57d4b8c5 418#if defined(__clang__) || defined(__clang) || \
d28ce8b4 419 (defined( __GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406)
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420# define GCC_DIAG_PRAGMA(x) _Pragma (#x)
421/* clang has "clang diagnostic" pragmas, but also understands gcc. */
b56aac20 422# define GCC_DIAG_IGNORE(x) _Pragma("GCC diagnostic push") \
c1d6452f 423 GCC_DIAG_PRAGMA(GCC diagnostic ignored #x)
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424# define GCC_DIAG_RESTORE _Pragma("GCC diagnostic pop")
425#else
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426# define GCC_DIAG_IGNORE(w)
427# define GCC_DIAG_RESTORE
b56aac20 428#endif
337458b1
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429/* for clang specific pragmas */
430#if defined(__clang__) || defined(__clang)
431# define CLANG_DIAG_PRAGMA(x) _Pragma (#x)
432# define CLANG_DIAG_IGNORE(x) _Pragma("clang diagnostic push") \
433 CLANG_DIAG_PRAGMA(clang diagnostic ignored #x)
434# define CLANG_DIAG_RESTORE _Pragma("clang diagnostic pop")
435#else
436# define CLANG_DIAG_IGNORE(w)
437# define CLANG_DIAG_RESTORE
438#endif
b56aac20 439
6f207bd3 440#define NOOP /*EMPTY*/(void)0
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441/* cea2e8a9dd23747f accidentally lost the comment originally from the first
442 check in of thread.h, explaining why we need dNOOP at all: */
443/* Rats: if dTHR is just blank then the subsequent ";" throws an error */
444/* Declaring a *function*, instead of a variable, ensures that we don't rely
445 on being able to suppress "unused" warnings. */
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446#ifdef __cplusplus
447#define dNOOP (void)0
448#else
64a8239e 449#define dNOOP extern int Perl___notused(void)
7db66e12 450#endif
71be2cbc 451
0cb96387 452#ifndef pTHX
a78adc84 453/* Don't bother defining tTHX ; using it outside
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454 * code guarded by PERL_IMPLICIT_CONTEXT is an error.
455 */
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456# define pTHX void
457# define pTHX_
0cb96387
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458# define aTHX
459# define aTHX_
9399a70c 460# define aTHXa(a) NOOP
0cb96387
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461# define dTHXa(a) dNOOP
462# define dTHX dNOOP
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463# define pTHX_1 1
464# define pTHX_2 2
465# define pTHX_3 3
466# define pTHX_4 4
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467# define pTHX_5 5
468# define pTHX_6 6
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469# define pTHX_7 7
470# define pTHX_8 8
471# define pTHX_9 9
a6fc70e5 472# define pTHX_12 12
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473#endif
474
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475#ifndef dVAR
476# define dVAR dNOOP
477#endif
478
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479/* these are only defined for compatibility; should not be used internally */
480#if !defined(pTHXo) && !defined(PERL_CORE)
0cb96387
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481# define pTHXo pTHX
482# define pTHXo_ pTHX_
0cb96387
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483# define aTHXo aTHX
484# define aTHXo_ aTHX_
c5be433b 485# define dTHXo dTHX
71d280e3 486# define dTHXoa(x) dTHXa(x)
0cb96387
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487#endif
488
489#ifndef pTHXx
5aaab254 490# define pTHXx PerlInterpreter *my_perl
0cb96387 491# define pTHXx_ pTHXx,
0cb96387
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492# define aTHXx my_perl
493# define aTHXx_ aTHXx,
c5be433b 494# define dTHXx dTHX
22c35a8c 495#endif
71be2cbc 496
1de7c2ac
GS
497/* Under PERL_IMPLICIT_SYS (used in Windows for fork emulation)
498 * PerlIO_foo() expands to PL_StdIO->pFOO(PL_StdIO, ...).
499 * dTHXs is therefore needed for all functions using PerlIO_foo(). */
500#ifdef PERL_IMPLICIT_SYS
27da23d5
JH
501# ifdef PERL_GLOBAL_STRUCT_PRIVATE
502# define dTHXs dVAR; dTHX
503# else
504# define dTHXs dTHX
505# endif
1de7c2ac 506#else
27da23d5
JH
507# ifdef PERL_GLOBAL_STRUCT_PRIVATE
508# define dTHXs dVAR
509# else
510# define dTHXs dNOOP
511# endif
1de7c2ac
GS
512#endif
513
5b692037
JH
514#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__cplusplus)
515# ifndef PERL_USE_GCC_BRACE_GROUPS
516# define PERL_USE_GCC_BRACE_GROUPS
517# endif
518#endif
519
728e2803
PP
520/*
521 * STMT_START { statements; } STMT_END;
522 * can be used as a single statement, as in
523 * if (x) STMT_START { ... } STMT_END; else ...
524 *
525 * Trying to select a version that gives no warnings...
526 */
527#if !(defined(STMT_START) && defined(STMT_END))
5b692037 528# ifdef PERL_USE_GCC_BRACE_GROUPS
a0288114 529# define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
728e2803
PP
530# define STMT_END )
531# else
728e2803
PP
532# define STMT_START do
533# define STMT_END while (0)
728e2803
PP
534# endif
535#endif
536
d6f9c181
JH
537#ifndef BYTEORDER /* Should never happen -- byteorder is in config.h */
538# define BYTEORDER 0x1234
79072805
LW
539#endif
540
541/* Overall memory policy? */
542#ifndef CONSERVATIVE
543# define LIBERAL 1
544#endif
545
8ada0baa
JH
546#if 'A' == 65 && 'I' == 73 && 'J' == 74 && 'Z' == 90
547#define ASCIIish
548#else
549#undef ASCIIish
550#endif
551
79072805
LW
552/*
553 * The following contortions are brought to you on behalf of all the
554 * standards, semi-standards, de facto standards, not-so-de-facto standards
555 * of the world, as well as all the other botches anyone ever thought of.
556 * The basic theory is that if we work hard enough here, the rest of the
557 * code can be a lot prettier. Well, so much for theory. Sorry, Henry...
558 */
ac58e20f 559
ee0007ab 560/* define this once if either system, instead of cluttering up the src */
7c458fae 561#if defined(MSDOS) || defined(WIN32) || defined(NETWARE)
ee0007ab
LW
562#define DOSISH 1
563#endif
564
739a0b84 565#if defined(__STDC__) || defined(_AIX) || defined(__stdc__) || defined(__cplusplus) || defined(NETWARE) || defined(__SYMBIAN32__)
352d5a3a
LW
566# define STANDARD_C 1
567#endif
568
8d87852b 569#if defined(__cplusplus) || defined(WIN32) || defined(__sgi) || defined(__EMX__) || defined(__QNX__) || defined(NETWARE) || defined(PERL_MICRO)
68dc0745
PP
570# define DONT_DECLARE_STD 1
571#endif
572
3d97541c 573/* These exist only for back-compat with XS modules. */
8162b70e 574#ifndef PERL_CORE
516e10a9 575#define VOL volatile
3d97541c 576#define CAN_PROTOTYPE
8162b70e 577#endif
663a0e37 578
284167a5
SM
579/* By compiling a perl with -DNO_TAINT_SUPPORT or -DSILENT_NO_TAINT_SUPPORT,
580 * you get a perl without taint support, but doubtlessly with a lesser
581 * degree of support. Do not do so unless you know exactly what it means
582 * technically, have a good reason to do so, and know exactly how the
583 * perl will be used. perls with -DSILENT_NO_TAINT_SUPPORT are considered
584 * a potential security risk due to flat out ignoring the security-relevant
585 * taint flags. This being said, a perl without taint support compiled in
586 * has marginal run-time performance benefits.
587 * SILENT_NO_TAINT_SUPPORT implies NO_TAINT_SUPPORT.
588 * SILENT_NO_TAINT_SUPPORT is the same as NO_TAINT_SUPPORT except it
589 * silently ignores -t/-T instead of throwing an exception.
053a3618
SM
590 *
591 * DANGER! Using NO_TAINT_SUPPORT or SILENT_NO_TAINT_SUPPORT
6ecb40c7 592 * voids your nonexistent warranty!
284167a5 593 */
dc6d7f5c 594#if defined(SILENT_NO_TAINT_SUPPORT) && !defined(NO_TAINT_SUPPORT)
284167a5
SM
595# define NO_TAINT_SUPPORT 1
596#endif
597
598/* NO_TAINT_SUPPORT can be set to transform virtually all taint-related
599 * operations into no-ops for a very modest speed-up. Enable only if you
600 * know what you're doing: tests and CPAN modules' tests are bound to fail.
601 */
dc6d7f5c 602#ifdef NO_TAINT_SUPPORT
284167a5
SM
603# define TAINT NOOP
604# define TAINT_NOT NOOP
605# define TAINT_IF(c) NOOP
606# define TAINT_ENV() NOOP
607# define TAINT_PROPER(s) NOOP
608# define TAINT_set(s) NOOP
609# define TAINT_get 0
610# define TAINTING_get 0
611# define TAINTING_set(s) NOOP
612# define TAINT_WARN_get 0
613# define TAINT_WARN_set(s) NOOP
614#else
d48c660d 615# define TAINT (PL_tainted = PL_tainting)
284167a5 616# define TAINT_NOT (PL_tainted = FALSE)
d48c660d 617# define TAINT_IF(c) if (UNLIKELY(c)) { PL_tainted = PL_tainting; }
2439e033
SM
618# define TAINT_ENV() if (UNLIKELY(PL_tainting)) { taint_env(); }
619# define TAINT_PROPER(s) if (UNLIKELY(PL_tainting)) { taint_proper(NULL, s); }
284167a5
SM
620# define TAINT_set(s) (PL_tainted = (s))
621# define TAINT_get (PL_tainted)
622# define TAINTING_get (PL_tainting)
623# define TAINTING_set(s) (PL_tainting = (s))
624# define TAINT_WARN_get (PL_taint_warn)
625# define TAINT_WARN_set(s) (PL_taint_warn = (s))
626#endif
a687059c 627
20be6587
DM
628/* flags used internally only within pp_subst and pp_substcont */
629#ifdef PERL_CORE
630# define SUBST_TAINT_STR 1 /* string tainted */
631# define SUBST_TAINT_PAT 2 /* pattern tainted */
632# define SUBST_TAINT_REPL 4 /* replacement tainted */
633# define SUBST_TAINT_RETAINT 8 /* use re'taint' in scope */
634# define SUBST_TAINT_BOOLRET 16 /* return is boolean (don't taint) */
635#endif
636
d460ef45 637/* XXX All process group stuff is handled in pp_sys.c. Should these
a6e633de
PP
638 defines move there? If so, I could simplify this a lot. --AD 9/96.
639*/
640/* Process group stuff changed from traditional BSD to POSIX.
641 perlfunc.pod documents the traditional BSD-style syntax, so we'll
642 try to preserve that, if possible.
643*/
644#ifdef HAS_SETPGID
645# define BSD_SETPGRP(pid, pgrp) setpgid((pid), (pgrp))
c07a80fd 646#else
a6e633de
PP
647# if defined(HAS_SETPGRP) && defined(USE_BSD_SETPGRP)
648# define BSD_SETPGRP(pid, pgrp) setpgrp((pid), (pgrp))
649# else
650# ifdef HAS_SETPGRP2 /* DG/UX */
651# define BSD_SETPGRP(pid, pgrp) setpgrp2((pid), (pgrp))
652# endif
653# endif
654#endif
655#if defined(BSD_SETPGRP) && !defined(HAS_SETPGRP)
656# define HAS_SETPGRP /* Well, effectively it does . . . */
657#endif
658
659/* getpgid isn't POSIX, but at least Solaris and Linux have it, and it makes
660 our life easier :-) so we'll try it.
661*/
662#ifdef HAS_GETPGID
663# define BSD_GETPGRP(pid) getpgid((pid))
664#else
665# if defined(HAS_GETPGRP) && defined(USE_BSD_GETPGRP)
666# define BSD_GETPGRP(pid) getpgrp((pid))
667# else
668# ifdef HAS_GETPGRP2 /* DG/UX */
669# define BSD_GETPGRP(pid) getpgrp2((pid))
670# endif
671# endif
672#endif
673#if defined(BSD_GETPGRP) && !defined(HAS_GETPGRP)
674# define HAS_GETPGRP /* Well, effectively it does . . . */
675#endif
676
d460ef45 677/* These are not exact synonyms, since setpgrp() and getpgrp() may
a6e633de
PP
678 have different behaviors, but perl.h used to define USE_BSDPGRP
679 (prior to 5.003_05) so some extension might depend on it.
680*/
681#if defined(USE_BSD_SETPGRP) || defined(USE_BSD_GETPGRP)
682# ifndef USE_BSDPGRP
683# define USE_BSDPGRP
684# endif
663a0e37
LW
685#endif
686
486ec47a 687/* HP-UX 10.X CMA (Common Multithreaded Architecture) insists that
8ac5a1fe
MH
688 pthread.h must be included before all other header files.
689*/
3db8f154 690#if defined(USE_ITHREADS) && defined(PTHREAD_H_FIRST) && defined(I_PTHREAD)
8ac5a1fe
MH
691# include <pthread.h>
692#endif
693
58ab9e8b 694#include <sys/types.h>
663a0e37 695
c7925a5e
DD
696/* EVC 4 SDK headers includes a bad definition of MB_CUR_MAX in stdlib.h
697 which is included from stdarg.h. Bad definition not present in SD 2008
698 SDK headers. wince.h is not yet included, so we cant fix this from there
699 since by then MB_CUR_MAX will be defined from stdlib.h.
700 cewchar.h includes a correct definition of MB_CUR_MAX and it is copied here
701 since cewchar.h can't be included this early */
702#if defined(UNDER_CE) && (_MSC_VER < 1300)
703# define MB_CUR_MAX 1
704#endif
9d82a2b7
AC
705
706# include <stdarg.h>
760ac839 707
27db2737
JH
708#ifdef I_STDINT
709# include <stdint.h>
710#endif
711
fe14fcc3 712#include <ctype.h>
63b481b9
AC
713#include <float.h>
714#include <limits.h>
a0d0e21e
LW
715
716#ifdef METHOD /* Defined by OSF/1 v3.0 by ctype.h */
717#undef METHOD
a0d0e21e
LW
718#endif
719
12ae5dfc
JH
720#ifdef PERL_MICRO
721# define NO_LOCALE
722#endif
723
4633a7c4 724#ifdef I_LOCALE
36477c24 725# include <locale.h>
4633a7c4
LW
726#endif
727
6ebbc862
KW
728#ifdef I_XLOCALE
729# include <xlocale.h>
730#endif
731
36477c24
PP
732#if !defined(NO_LOCALE) && defined(HAS_SETLOCALE)
733# define USE_LOCALE
ccd65d51
KW
734# define HAS_SKIP_LOCALE_INIT /* Solely for XS code to test for this
735 capability */
36477c24
PP
736# if !defined(NO_LOCALE_COLLATE) && defined(LC_COLLATE) \
737 && defined(HAS_STRXFRM)
738# define USE_LOCALE_COLLATE
739# endif
740# if !defined(NO_LOCALE_CTYPE) && defined(LC_CTYPE)
741# define USE_LOCALE_CTYPE
742# endif
743# if !defined(NO_LOCALE_NUMERIC) && defined(LC_NUMERIC)
744# define USE_LOCALE_NUMERIC
745# endif
fa9b773e
KW
746# if !defined(NO_LOCALE_MESSAGES) && defined(LC_MESSAGES)
747# define USE_LOCALE_MESSAGES
748# endif
749# if !defined(NO_LOCALE_MONETARY) && defined(LC_MONETARY)
750# define USE_LOCALE_MONETARY
751# endif
56e45410
KW
752# if !defined(NO_LOCALE_TIME) && defined(LC_TIME)
753# define USE_LOCALE_TIME
754# endif
36477c24 755#endif /* !NO_LOCALE && HAS_SETLOCALE */
a0d0e21e 756
fe14fcc3 757#include <setjmp.h>
79072805 758
a0d0e21e 759#ifdef I_SYS_PARAM
79072805
LW
760# ifdef PARAM_NEEDS_TYPES
761# include <sys/types.h>
762# endif
763# include <sys/param.h>
352d5a3a 764#endif
79072805 765
ce3470dc
AD
766/* On BSD-derived systems, <sys/param.h> defines BSD to a year-month
767 value something like 199306. This may be useful if no more-specific
768 feature test is available.
769*/
770#if defined(BSD)
771# ifndef BSDish
772# define BSDish
773# endif
774#endif
775
dd512de3
AC
776/* Use all the "standard" definitions */
777#include <stdlib.h>
03a14243 778
3f270f98
JH
779/* If this causes problems, set i_unistd=undef in the hint file. */
780#ifdef I_UNISTD
763ee752
AB
781# if defined(__amigaos4__)
782# ifdef I_NETINET_IN
783# include <netinet/in.h>
784# endif
785# endif
3f270f98 786# include <unistd.h>
6e3136a6
AB
787# if defined(__amigaos4__)
788/* Under AmigaOS 4 newlib.library provides an environ. However using
789 * it doesn't give us enough control over inheritance of variables by
790 * subshells etc. so replace with custom version based on abc-shell
791 * code. */
792extern char **myenviron;
793# undef environ
794# define environ myenviron
795# endif
3f270f98
JH
796#endif
797
de8ca8af
NT
798/* for WCOREDUMP */
799#ifdef I_SYS_WAIT
800# include <sys/wait.h>
801#endif
802
9969cdde 803#ifdef __SYMBIAN32__
27da23d5
JH
804# undef _SC_ARG_MAX /* Symbian has _SC_ARG_MAX but no sysconf() */
805#endif
806
21e89b5f 807#if defined(HAS_SYSCALL) && !defined(HAS_SYSCALL_PROTO)
c45598c5 808EXTERN_C int syscall(int, ...);
2ef53570
JH
809#endif
810
21e89b5f 811#if defined(HAS_USLEEP) && !defined(HAS_USLEEP_PROTO)
c45598c5 812EXTERN_C int usleep(unsigned int);
2ef53570
JH
813#endif
814
1109a392
MHM
815#ifdef PERL_CORE
816
817/* macros for correct constant construction */
818# if INTSIZE >= 2
819# define U16_CONST(x) ((U16)x##U)
820# else
821# define U16_CONST(x) ((U16)x##UL)
822# endif
823
824# if INTSIZE >= 4
825# define U32_CONST(x) ((U32)x##U)
826# else
827# define U32_CONST(x) ((U32)x##UL)
828# endif
829
830# ifdef HAS_QUAD
831# if INTSIZE >= 8
832# define U64_CONST(x) ((U64)x##U)
833# elif LONGSIZE >= 8
834# define U64_CONST(x) ((U64)x##UL)
835# elif QUADKIND == QUAD_IS_LONG_LONG
836# define U64_CONST(x) ((U64)x##ULL)
52865553
SH
837# elif QUADKIND == QUAD_IS___INT64
838# define U64_CONST(x) ((U64)x##UI64)
1109a392
MHM
839# else /* best guess we can make */
840# define U64_CONST(x) ((U64)x##UL)
841# endif
842# endif
843
844/* byte-swapping functions for big-/little-endian conversion */
845# define _swab_16_(x) ((U16)( \
846 (((U16)(x) & U16_CONST(0x00ff)) << 8) | \
847 (((U16)(x) & U16_CONST(0xff00)) >> 8) ))
848
849# define _swab_32_(x) ((U32)( \
850 (((U32)(x) & U32_CONST(0x000000ff)) << 24) | \
851 (((U32)(x) & U32_CONST(0x0000ff00)) << 8) | \
852 (((U32)(x) & U32_CONST(0x00ff0000)) >> 8) | \
853 (((U32)(x) & U32_CONST(0xff000000)) >> 24) ))
854
855# ifdef HAS_QUAD
856# define _swab_64_(x) ((U64)( \
857 (((U64)(x) & U64_CONST(0x00000000000000ff)) << 56) | \
858 (((U64)(x) & U64_CONST(0x000000000000ff00)) << 40) | \
859 (((U64)(x) & U64_CONST(0x0000000000ff0000)) << 24) | \
860 (((U64)(x) & U64_CONST(0x00000000ff000000)) << 8) | \
861 (((U64)(x) & U64_CONST(0x000000ff00000000)) >> 8) | \
862 (((U64)(x) & U64_CONST(0x0000ff0000000000)) >> 24) | \
863 (((U64)(x) & U64_CONST(0x00ff000000000000)) >> 40) | \
864 (((U64)(x) & U64_CONST(0xff00000000000000)) >> 56) ))
865# endif
866
9c17f24a
NC
867/* The old value was hard coded at 1008. (4096-16) seems to be a bit faster,
868 at least on FreeBSD. YMMV, so experiment. */
869#ifndef PERL_ARENA_SIZE
870#define PERL_ARENA_SIZE 4080
871#endif
872
ccb2c8b8 873/* Maximum level of recursion */
2b9dff67
RGS
874#ifndef PERL_SUB_DEPTH_WARN
875#define PERL_SUB_DEPTH_WARN 100
ccb2c8b8
RGS
876#endif
877
1109a392
MHM
878#endif /* PERL_CORE */
879
bdf3085f
NC
880/* We no longer default to creating a new SV for GvSV.
881 Do this before embed. */
882#ifndef PERL_CREATE_GVSV
7459f06b
NC
883# ifndef PERL_DONT_CREATE_GVSV
884# define PERL_DONT_CREATE_GVSV
885# endif
bdf3085f
NC
886#endif
887
ca0c25f6
NC
888#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
889#define PERL_USES_PL_PIDSTATUS
890#endif
891
739a0b84 892#if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(__SYMBIAN32__)
a62746fa
RGS
893#define PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION
894#endif
895
c31fac66
GS
896#define MEM_SIZE Size_t
897
1936d2a7
NC
898/* Round all values passed to malloc up, by default to a multiple of
899 sizeof(size_t)
900*/
901#ifndef PERL_STRLEN_ROUNDUP_QUANTUM
902#define PERL_STRLEN_ROUNDUP_QUANTUM Size_t_size
903#endif
904
f1200559
WH
905/* sv_grow() will expand strings by at least a certain percentage of
906 the previously *used* length to avoid excessive calls to realloc().
907 The default is 25% of the current length.
908*/
909#ifndef PERL_STRLEN_EXPAND_SHIFT
910# define PERL_STRLEN_EXPAND_SHIFT 2
911#endif
912
346712be
AC
913#include <stddef.h>
914#define STRUCT_OFFSET(s,m) offsetof(s,m)
d0b86e2f
BF
915
916/* ptrdiff_t is C11, so undef it under pedantic builds */
917#ifdef PERL_GCC_PEDANTIC
918# undef HAS_PTRDIFF_T
51371543
GS
919#endif
920
9969cdde 921#ifndef __SYMBIAN32__
27da23d5
JH
922# if defined(I_STRING) || defined(__cplusplus)
923# include <string.h>
924# else
925# include <strings.h>
926# endif
51371543
GS
927#endif
928
55497cff
PP
929/* This comes after <stdlib.h> so we don't try to change the standard
930 * library prototypes; we'll use our own in proto.h instead. */
03a14243 931
4633a7c4 932#ifdef MYMALLOC
86058a2d 933# ifdef PERL_POLLUTE_MALLOC
ee13e175 934# ifndef PERL_EXTMALLOC_DEF
86058a2d
GS
935# define Perl_malloc malloc
936# define Perl_calloc calloc
937# define Perl_realloc realloc
938# define Perl_mfree free
ee13e175 939# endif
86058a2d
GS
940# else
941# define EMBEDMYMALLOC /* for compatibility */
942# endif
827e134a 943
651b9576
GS
944# define safemalloc Perl_malloc
945# define safecalloc Perl_calloc
946# define saferealloc Perl_realloc
947# define safefree Perl_mfree
22f7c9c9
JH
948# define CHECK_MALLOC_TOO_LATE_FOR_(code) STMT_START { \
949 if (!PL_tainting && MallocCfg_ptr[MallocCfg_cfg_env_read]) \
950 code; \
951 } STMT_END
952# define CHECK_MALLOC_TOO_LATE_FOR(ch) \
953 CHECK_MALLOC_TOO_LATE_FOR_(MALLOC_TOO_LATE_FOR(ch))
954# define panic_write2(s) write(2, s, strlen(s))
955# define CHECK_MALLOC_TAINT(newval) \
956 CHECK_MALLOC_TOO_LATE_FOR_( \
957 if (newval) { \
acfd4d8e 958 PERL_UNUSED_RESULT(panic_write2("panic: tainting with $ENV{PERL_MALLOC_OPT}\n"));\
22f7c9c9 959 exit(1); })
22f7c9c9 960# define MALLOC_CHECK_TAINT(argc,argv,env) STMT_START { \
b0891165 961 if (doing_taint(argc,argv,env)) { \
22f7c9c9
JH
962 MallocCfg_ptr[MallocCfg_skip_cfg_env] = 1; \
963 }} STMT_END;
f2517201
GS
964#else /* MYMALLOC */
965# define safemalloc safesysmalloc
966# define safecalloc safesyscalloc
967# define saferealloc safesysrealloc
968# define safefree safesysfree
22f7c9c9
JH
969# define CHECK_MALLOC_TOO_LATE_FOR(ch) ((void)0)
970# define CHECK_MALLOC_TAINT(newval) ((void)0)
971# define MALLOC_CHECK_TAINT(argc,argv,env)
55497cff 972#endif /* MYMALLOC */
4633a7c4 973
fe13d51d 974/* diag_listed_as: "-T" is on the #! line, it must also be used on the command line */
27da23d5 975#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
976#define TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, "")
977#define MALLOC_TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, " with $ENV{PERL_MALLOC_OPT}")
978#define MALLOC_CHECK_TAINT2(argc,argv) MALLOC_CHECK_TAINT(argc,argv,NULL)
979
16d20bd9
AD
980#ifdef I_MEMORY
981# include <memory.h>
982#endif
983
fc36a67e 984#ifndef memzero
04322328 985# define memzero(d,l) memset(d,0,l)
d9d8d8de 986#endif
378cc40b 987
ae986130 988#ifdef I_NETINET_IN
79072805 989# include <netinet/in.h>
ae986130
LW
990#endif
991
28e8609d
JH
992#ifdef I_ARPA_INET
993# include <arpa/inet.h>
994#endif
995
1aef975c 996#ifdef I_SYS_STAT
84902520 997# include <sys/stat.h>
1aef975c 998#endif
79072805 999
287a962e
JD
1000/* Microsoft VC's sys/stat.h defines all S_Ixxx macros except S_IFIFO.
1001 This definition should ideally go into win32/win32.h, but S_IFIFO is
1002 used later here in perl.h before win32/win32.h is being included. */
1003#if !defined(S_IFIFO) && defined(_S_IFIFO)
1004# define S_IFIFO _S_IFIFO
1005#endif
1006
cc3315ba 1007/* The stat macros for Unisoft System V/88 (and derivatives
a0d0e21e
LW
1008 like UTekV) are broken, sometimes giving false positives. Undefine
1009 them here and let the code below set them to proper values.
1010
1011 The ghs macro stands for GreenHills Software C-1.8.5 which
1012 is the C compiler for sysV88 and the various derivatives.
1013 This header file bug is corrected in gcc-2.5.8 and later versions.
1014 --Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94. */
1015
cc3315ba 1016#if defined(m88k) && defined(ghs)
79072805
LW
1017# undef S_ISDIR
1018# undef S_ISCHR
1019# undef S_ISBLK
1020# undef S_ISREG
1021# undef S_ISFIFO
1022# undef S_ISLNK
ee0007ab 1023#endif
135863df 1024
9245da2a 1025#include <time.h>
663a0e37 1026
fe14fcc3 1027#ifdef I_SYS_TIME
85e6fe83 1028# ifdef I_SYS_TIME_KERNEL
663a0e37
LW
1029# define KERNEL
1030# endif
1031# include <sys/time.h>
85e6fe83 1032# ifdef I_SYS_TIME_KERNEL
663a0e37
LW
1033# undef KERNEL
1034# endif
a687059c 1035#endif
135863df 1036
55497cff 1037#if defined(HAS_TIMES) && defined(I_SYS_TIMES)
85e6fe83 1038# include <sys/times.h>
d9d8d8de 1039#endif
8d063cd8 1040
fe14fcc3 1041#if defined(HAS_STRERROR) && (!defined(HAS_MKDIR) || !defined(HAS_RMDIR))
79072805 1042# undef HAS_STRERROR
663a0e37
LW
1043#endif
1044
1045#include <errno.h>
1e743fda 1046
acfe0abc 1047#if defined(WIN32) && defined(PERL_IMPLICIT_SYS)
b4748376
NIS
1048# define WIN32SCK_IS_STDSCK /* don't pull in custom wsock layer */
1049#endif
1050
da70cfc6 1051#if defined(HAS_SOCKET) && !defined(WIN32) /* WIN32 handles sockets via win32.h */
1e743fda
JH
1052# include <sys/socket.h>
1053# if defined(USE_SOCKS) && defined(I_SOCKS)
1054# if !defined(INCLUDE_PROTOTYPES)
1055# define INCLUDE_PROTOTYPES /* for <socks.h> */
1056# define PERL_SOCKS_NEED_PROTOTYPES
1057# endif
1058# include <socks.h>
1059# ifdef PERL_SOCKS_NEED_PROTOTYPES /* keep cpp space clean */
1060# undef INCLUDE_PROTOTYPES
1061# undef PERL_SOCKS_NEED_PROTOTYPES
ed6116ce 1062# endif
d460ef45 1063# endif
1e743fda 1064# ifdef I_NETDB
2986a63f
JH
1065# ifdef NETWARE
1066# include<stdio.h>
1067# endif
1e743fda
JH
1068# include <netdb.h>
1069# endif
1070# ifndef ENOTSOCK
1071# ifdef I_NET_ERRNO
1072# include <net/errno.h>
1073# endif
1074# endif
1075#endif
1076
fa0a29af 1077/* sockatmark() is so new (2001) that many places might have it hidden
29820b6d
MHM
1078 * behind some -D_BLAH_BLAH_SOURCE guard. The __THROW magic is required
1079 * e.g. in Gentoo, see http://bugs.gentoo.org/show_bug.cgi?id=12605 */
fa0a29af 1080#if defined(HAS_SOCKATMARK) && !defined(HAS_SOCKATMARK_PROTO)
29820b6d
MHM
1081# if defined(__THROW) && defined(__GLIBC__)
1082int sockatmark(int) __THROW;
1083# else
2ef53570 1084int sockatmark(int);
29820b6d 1085# endif
2ef53570
JH
1086#endif
1087
7e827271 1088#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
1089EXTERN_C int fchdir(int);
1090EXTERN_C int flock(int, int);
1091EXTERN_C int fseeko(FILE *, off_t, int);
1092EXTERN_C off_t ftello(FILE *);
1093#endif
1094
7e827271 1095#if defined(__SUNPRO_CC) /* SUNWspro CC (C++) */
1ccb7c8d 1096EXTERN_C char *crypt(const char *, const char *);
7e827271 1097EXTERN_C char **environ;
1ccb7c8d
JH
1098#endif
1099
83a6ff2e 1100#if defined(__cplusplus)
ce3470dc 1101# if defined(BSDish)
b91fbb93 1102EXTERN_C char **environ;
83a6ff2e 1103# elif defined(__CYGWIN__)
667e2948
SP
1104EXTERN_C char *crypt(const char *, const char *);
1105#endif
83a6ff2e 1106#endif
667e2948 1107
1e743fda
JH
1108#ifdef SETERRNO
1109# undef SETERRNO /* SOCKS might have defined this */
ed6116ce 1110#endif
f86702cc
PP
1111
1112#ifdef VMS
1113# define SETERRNO(errcode,vmserrcode) \
1114 STMT_START { \
1115 set_errno(errcode); \
1116 set_vaxc_errno(vmserrcode); \
1117 } STMT_END
4ee39169
CS
1118# define dSAVEDERRNO int saved_errno; unsigned saved_vms_errno
1119# define dSAVE_ERRNO int saved_errno = errno; unsigned saved_vms_errno = vaxc$errno
1120# define SAVE_ERRNO ( saved_errno = errno, saved_vms_errno = vaxc$errno )
1121# define RESTORE_ERRNO SETERRNO(saved_errno, saved_vms_errno)
1122
93189314
JH
1123# define LIB_INVARG LIB$_INVARG
1124# define RMS_DIR RMS$_DIR
1125# define RMS_FAC RMS$_FAC
1126# define RMS_FEX RMS$_FEX
1127# define RMS_FNF RMS$_FNF
1128# define RMS_IFI RMS$_IFI
1129# define RMS_ISI RMS$_ISI
1130# define RMS_PRV RMS$_PRV
1131# define SS_ACCVIO SS$_ACCVIO
1132# define SS_DEVOFFLINE SS$_DEVOFFLINE
1133# define SS_IVCHAN SS$_IVCHAN
1134# define SS_NORMAL SS$_NORMAL
8a9f18be 1135# define SS_NOPRIV SS$_NOPRIV
4388f261 1136# define SS_BUFFEROVF SS$_BUFFEROVF
748a9306 1137#else
93189314
JH
1138# define LIB_INVARG 0
1139# define RMS_DIR 0
1140# define RMS_FAC 0
1141# define RMS_FEX 0
1142# define RMS_FNF 0
1143# define RMS_IFI 0
1144# define RMS_ISI 0
1145# define RMS_PRV 0
1146# define SS_ACCVIO 0
1147# define SS_DEVOFFLINE 0
1148# define SS_IVCHAN 0
1149# define SS_NORMAL 0
8a9f18be 1150# define SS_NOPRIV 0
4388f261 1151# define SS_BUFFEROVF 0
748a9306 1152#endif
ed6116ce 1153
6ca940a9
TC
1154#ifdef WIN32
1155# define dSAVEDERRNO int saved_errno; DWORD saved_win32_errno
1156# define dSAVE_ERRNO int saved_errno = errno; DWORD saved_win32_errno = GetLastError()
1157# define SAVE_ERRNO ( saved_errno = errno, saved_win32_errno = GetLastError() )
1158# define RESTORE_ERRNO ( errno = saved_errno, SetLastError(saved_win32_errno) )
1159#endif
1160
1161#ifdef OS2
1162# define dSAVEDERRNO int saved_errno; unsigned long saved_os2_errno
1163# define dSAVE_ERRNO int saved_errno = errno; unsigned long saved_os2_errno = Perl_rc
1164# define SAVE_ERRNO ( saved_errno = errno, saved_os2_errno = Perl_rc )
1165# define RESTORE_ERRNO ( errno = saved_errno, Perl_rc = saved_os2_errno )
1166#endif
1167
1168#ifndef SETERRNO
1169# define SETERRNO(errcode,vmserrcode) (errno = (errcode))
1170#endif
1171
1172#ifndef dSAVEDERRNO
1173# define dSAVEDERRNO int saved_errno
1174# define dSAVE_ERRNO int saved_errno = errno
1175# define SAVE_ERRNO (saved_errno = errno)
1176# define RESTORE_ERRNO (errno = saved_errno)
1177#endif
1178
f5fa9033 1179#define ERRSV GvSVn(PL_errgv)
dfd167e9 1180
b4f8d149 1181/* contains inlined gv_add_by_type */
dfd167e9 1182#define CLEAR_ERRSV() STMT_START { \
b4f8d149
DD
1183 SV ** const svp = &GvSV(PL_errgv); \
1184 if (!*svp) { \
a1b60c8d 1185 *svp = newSVpvs(""); \
b4f8d149
DD
1186 } else if (SvREADONLY(*svp)) { \
1187 SvREFCNT_dec_NN(*svp); \
b4f8d149 1188 *svp = newSVpvs(""); \
dfd167e9 1189 } else { \
b4f8d149 1190 SV *const errsv = *svp; \
a1b60c8d 1191 SvPVCLEAR(errsv); \
b4f8d149 1192 SvPOK_only(errsv); \
dfd167e9
NC
1193 if (SvMAGICAL(errsv)) { \
1194 mg_free(errsv); \
1195 } \
dfd167e9
NC
1196 } \
1197 } STMT_END
1198
1199
414bf5ae
MHM
1200#ifdef PERL_CORE
1201# define DEFSV (0 + GvSVn(PL_defgv))
55b5114f
FC
1202# define DEFSV_set(sv) \
1203 (SvREFCNT_dec(GvSV(PL_defgv)), GvSV(PL_defgv) = SvREFCNT_inc(sv))
1204# define SAVE_DEFSV \
1205 ( \
1206 save_gp(PL_defgv, 0), \
1207 GvINTRO_off(PL_defgv), \
1208 SAVEGENERICSV(GvSV(PL_defgv)), \
1209 GvSV(PL_defgv) = NULL \
1210 )
414bf5ae
MHM
1211#else
1212# define DEFSV GvSVn(PL_defgv)
55b5114f
FC
1213# define DEFSV_set(sv) (GvSV(PL_defgv) = (sv))
1214# define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv))
414bf5ae 1215#endif
38a03e6e 1216
55497cff 1217#ifndef errno
5ff3f7a4
GS
1218 extern int errno; /* ANSI allows errno to be an lvalue expr.
1219 * For example in multithreaded environments
1220 * something like this might happen:
1221 * extern int *_errno(void);
1222 * #define errno (*_errno()) */
d9d8d8de 1223#endif
663a0e37 1224
7e996671
KW
1225#define UNKNOWN_ERRNO_MSG "(unknown)"
1226
2304df62 1227#ifdef HAS_STRERROR
b3e384bf 1228# ifndef DONT_DECLARE_STD
a0d0e21e 1229# ifdef VMS
20ce7b12 1230 char *strerror (int,...);
a0d0e21e 1231# else
20ce7b12 1232 char *strerror (int);
a0d0e21e 1233# endif
b3e384bf
KW
1234# endif
1235# ifndef Strerror
1236# define Strerror strerror
1237# endif
2304df62
AD
1238#else
1239# ifdef HAS_SYS_ERRLIST
79072805
LW
1240 extern int sys_nerr;
1241 extern char *sys_errlist[];
2304df62
AD
1242# ifndef Strerror
1243# define Strerror(e) \
7e996671 1244 ((e) < 0 || (e) >= sys_nerr ? UNKNOWN_ERRNO_MSG : sys_errlist[e])
2304df62 1245# endif
79072805 1246# endif
35c8bce7 1247#endif
663a0e37 1248
2304df62 1249#ifdef I_SYS_IOCTL
79072805
LW
1250# ifndef _IOCTL_
1251# include <sys/ioctl.h>
1252# endif
a687059c
LW
1253#endif
1254
ee0007ab 1255#if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
79072805
LW
1256# ifdef HAS_SOCKETPAIR
1257# undef HAS_SOCKETPAIR
1258# endif
2304df62
AD
1259# ifdef I_NDBM
1260# undef I_NDBM
79072805 1261# endif
a687059c
LW
1262#endif
1263
02fc2eee
NC
1264#ifndef HAS_SOCKETPAIR
1265# ifdef HAS_SOCKET
1266# define socketpair Perl_my_socketpair
1267# endif
1268#endif
1269
a687059c 1270#if INTSIZE == 2
79072805
LW
1271# define htoni htons
1272# define ntohi ntohs
a687059c 1273#else
79072805
LW
1274# define htoni htonl
1275# define ntohi ntohl
a687059c
LW
1276#endif
1277
a0d0e21e 1278/* Configure already sets Direntry_t */
35c8bce7 1279#if defined(I_DIRENT)
663a0e37 1280# include <dirent.h>
ae986130 1281#else
fe14fcc3 1282# ifdef I_SYS_NDIR
79a0689e 1283# include <sys/ndir.h>
663a0e37 1284# else
fe14fcc3 1285# ifdef I_SYS_DIR
79a0689e
LW
1286# ifdef hp9000s500
1287# include <ndir.h> /* may be wrong in the future */
1288# else
1289# include <sys/dir.h>
1290# endif
663a0e37
LW
1291# endif
1292# endif
4633a7c4 1293#endif
a687059c 1294
c623bd54
LW
1295/*
1296 * The following gobbledygook brought to you on behalf of __STDC__.
1297 * (I could just use #ifndef __STDC__, but this is more bulletproof
1298 * in the face of half-implementations.)
1299 */
1300
21e89b5f 1301#if defined(I_SYSMODE)
ca6e1c26
JH
1302#include <sys/mode.h>
1303#endif
1304
c623bd54
LW
1305#ifndef S_IFMT
1306# ifdef _S_IFMT
1307# define S_IFMT _S_IFMT
1308# else
1309# define S_IFMT 0170000
1310# endif
1311#endif
1312
1313#ifndef S_ISDIR
1314# define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
1315#endif
1316
1317#ifndef S_ISCHR
1318# define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
1319#endif
1320
1321#ifndef S_ISBLK
fe14fcc3
LW
1322# ifdef S_IFBLK
1323# define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
1324# else
1325# define S_ISBLK(m) (0)
1326# endif
c623bd54
LW
1327#endif
1328
1329#ifndef S_ISREG
1330# define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
1331#endif
1332
1333#ifndef S_ISFIFO
fe14fcc3
LW
1334# ifdef S_IFIFO
1335# define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
1336# else
1337# define S_ISFIFO(m) (0)
1338# endif
c623bd54
LW
1339#endif
1340
1341#ifndef S_ISLNK
1342# ifdef _S_ISLNK
1343# define S_ISLNK(m) _S_ISLNK(m)
1344# else
1345# ifdef _S_IFLNK
1346# define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
1347# else
1348# ifdef S_IFLNK
1349# define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
1350# else
1351# define S_ISLNK(m) (0)
1352# endif
1353# endif
1354# endif
1355#endif
1356
1357#ifndef S_ISSOCK
1358# ifdef _S_ISSOCK
1359# define S_ISSOCK(m) _S_ISSOCK(m)
1360# else
1361# ifdef _S_IFSOCK
1362# define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
1363# else
1364# ifdef S_IFSOCK
1365# define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
1366# else
1367# define S_ISSOCK(m) (0)
1368# endif
1369# endif
1370# endif
1371#endif
1372
1373#ifndef S_IRUSR
1374# ifdef S_IREAD
1375# define S_IRUSR S_IREAD
1376# define S_IWUSR S_IWRITE
1377# define S_IXUSR S_IEXEC
1378# else
1379# define S_IRUSR 0400
1380# define S_IWUSR 0200
1381# define S_IXUSR 0100
1382# endif
fac7cdfc 1383#endif
1384
1385#ifndef S_IRGRP
1386# ifdef S_IRUSR
1387# define S_IRGRP (S_IRUSR>>3)
1388# define S_IWGRP (S_IWUSR>>3)
1389# define S_IXGRP (S_IXUSR>>3)
1390# else
1391# define S_IRGRP 0040
1392# define S_IWGRP 0020
1393# define S_IXGRP 0010
1394# endif
1395#endif
1396
1397#ifndef S_IROTH
1398# ifdef S_IRUSR
1399# define S_IROTH (S_IRUSR>>6)
1400# define S_IWOTH (S_IWUSR>>6)
1401# define S_IXOTH (S_IXUSR>>6)
1402# else
1403# define S_IROTH 0040
1404# define S_IWOTH 0020
1405# define S_IXOTH 0010
1406# endif
c623bd54
LW
1407#endif
1408
1409#ifndef S_ISUID
1410# define S_ISUID 04000
1411#endif
1412
1413#ifndef S_ISGID
1414# define S_ISGID 02000
1415#endif
1416
ca6e1c26
JH
1417#ifndef S_IRWXU
1418# define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR)
d460ef45 1419#endif
ca6e1c26
JH
1420
1421#ifndef S_IRWXG
1422# define S_IRWXG (S_IRGRP|S_IWGRP|S_IXGRP)
d460ef45 1423#endif
ca6e1c26
JH
1424
1425#ifndef S_IRWXO
1426# define S_IRWXO (S_IROTH|S_IWOTH|S_IXOTH)
d460ef45 1427#endif
ca6e1c26 1428
b6c36746 1429/* Haiku R1 seems to define S_IREAD and S_IWRITE in <posix/fcntl.h>
c21fb2b8
JH
1430 * which would get included through <sys/file.h >, but that is 3000
1431 * lines in the future. --jhi */
1432
b6c36746 1433#if !defined(S_IREAD) && !defined(__HAIKU__)
ca6e1c26
JH
1434# define S_IREAD S_IRUSR
1435#endif
1436
b6c36746 1437#if !defined(S_IWRITE) && !defined(__HAIKU__)
ca6e1c26
JH
1438# define S_IWRITE S_IWUSR
1439#endif
1440
1441#ifndef S_IEXEC
1442# define S_IEXEC S_IXUSR
1443#endif
1444
a0d0e21e 1445#if defined(cray) || defined(gould) || defined(i860) || defined(pyr)
45d8adaa
LW
1446# define SLOPPYDIVIDE
1447#endif
1448
748a9306
LW
1449#ifdef UV
1450#undef UV
1451#endif
1452
f1519f70
AC
1453/* This used to be conditionally defined based on whether we had a sprintf()
1454 * that correctly returns the string length (as required by C89), but we no
1455 * longer need that. XS modules can (and do) use this name, so it must remain
1456 * a part of the API that's visible to modules. But we no longer document it
1457 * either (because using sprintf() rather than snprintf() is almost always
1458 * a bad idea). */
1459#define my_sprintf sprintf
ce582cee 1460
5b692037
JH
1461/*
1462 * If we have v?snprintf() and the C99 variadic macros, we can just
1463 * use just the v?snprintf(). It is nice to try to trap the buffer
1464 * overflow, however, so if we are DEBUGGING, and we cannot use the
e5afc1ae
DD
1465 * gcc statement expressions, then use the function wrappers which try
1466 * to trap the overflow. If we can use the gcc statement expressions,
1467 * we can try that even with the version that uses the C99 variadic
1468 * macros.
5b692037
JH
1469 */
1470
1208b3dd 1471/* Note that we do not check against snprintf()/vsnprintf() returning
13d66b05
AC
1472 * negative values because that is non-standard behaviour and we now
1473 * assume a working C89 implementation. */
1208b3dd 1474
571ee10c 1475#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
e8549682 1476
a4eca1d4
JH
1477#ifdef USE_QUADMATH
1478# define my_snprintf Perl_my_snprintf
1479# define PERL_MY_SNPRINTF_GUARDED
1480#else
e7913990 1481#if defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
5b692037 1482# ifdef PERL_USE_GCC_BRACE_GROUPS
e8549682 1483# define my_snprintf(buffer, max, ...) ({ int len = snprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, snprintf); len; })
1208b3dd 1484# define PERL_MY_SNPRINTF_GUARDED
5b692037 1485# else
e8549682 1486# define my_snprintf(buffer, max, ...) snprintf(buffer, max, __VA_ARGS__)
5b692037
JH
1487# endif
1488#else
1489# define my_snprintf Perl_my_snprintf
1208b3dd 1490# define PERL_MY_SNPRINTF_GUARDED
5b692037 1491#endif
a4eca1d4 1492#endif
5b692037 1493
a4eca1d4
JH
1494/* There is no quadmath_vsnprintf, and therefore my_vsnprintf()
1495 * dies if called under USE_QUADMATH. */
13d66b05 1496#if defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
5b692037 1497# ifdef PERL_USE_GCC_BRACE_GROUPS
e8549682 1498# define my_vsnprintf(buffer, max, ...) ({ int len = vsnprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, vsnprintf); len; })
1208b3dd 1499# define PERL_MY_VSNPRINTF_GUARDED
5b692037 1500# else
e8549682 1501# define my_vsnprintf(buffer, max, ...) vsnprintf(buffer, max, __VA_ARGS__)
5b692037
JH
1502# endif
1503#else
1504# define my_vsnprintf Perl_my_vsnprintf
1208b3dd 1505# define PERL_MY_VSNPRINTF_GUARDED
5b692037 1506#endif
d9fad198 1507
e8549682
JH
1508/* You will definitely need to use the PERL_MY_SNPRINTF_POST_GUARD()
1509 * or PERL_MY_VSNPRINTF_POST_GUARD() if you otherwise decide to ignore
1510 * the result of my_snprintf() or my_vsnprintf(). (No, you should not
1511 * completely ignore it: otherwise you cannot know whether your output
1512 * was too long.)
1513 *
1514 * int len = my_sprintf(buf, max, ...);
1515 * PERL_MY_SNPRINTF_POST_GUARD(len, max);
1516 *
1517 * The trick is that in certain platforms [a] the my_sprintf() already
1518 * contains the sanity check, while in certain platforms [b] it needs
1519 * to be done as a separate step. The POST_GUARD is that step-- in [a]
1520 * platforms the POST_GUARD actually does nothing since the check has
1521 * already been done. Watch out for the max being the same in both calls.
1522 *
1523 * If you actually use the snprintf/vsnprintf return value already,
1524 * you assumedly are checking its validity somehow. But you can
1525 * insert the POST_GUARD() also in that case. */
1526
1527#ifndef PERL_MY_SNPRINTF_GUARDED
1528# define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, snprintf)
1529#else
1530# define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
1531#endif
1532
1533#ifndef PERL_MY_VSNPRINTF_GUARDED
1534# define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, vsnprintf)
1535#else
1536# define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
1537#endif
1538
a6cc4119
SP
1539#ifdef HAS_STRLCAT
1540# define my_strlcat strlcat
1541#else
1542# define my_strlcat Perl_my_strlcat
1543#endif
1544
1545#ifdef HAS_STRLCPY
1546# define my_strlcpy strlcpy
1547#else
1548# define my_strlcpy Perl_my_strlcpy
1549#endif
1550
05f13f53 1551/*
27d4fb96
PP
1552 The IV type is supposed to be long enough to hold any integral
1553 value or a pointer.
1554 --Andy Dougherty August 1996
1555*/
1556
a22e52b9
JH
1557typedef IVTYPE IV;
1558typedef UVTYPE UV;
8175356b 1559
10cc9d2a 1560#if defined(USE_64_BIT_INT) && defined(HAS_QUAD)
6b8eaf93 1561# if QUADKIND == QUAD_IS_INT64_T && defined(INT64_MAX)
5ff3f7a4
GS
1562# define IV_MAX INT64_MAX
1563# define IV_MIN INT64_MIN
1564# define UV_MAX UINT64_MAX
cae7ae48
JH
1565# ifndef UINT64_MIN
1566# define UINT64_MIN 0
1567# endif
5ff3f7a4
GS
1568# define UV_MIN UINT64_MIN
1569# else
1570# define IV_MAX PERL_QUAD_MAX
1571# define IV_MIN PERL_QUAD_MIN
1572# define UV_MAX PERL_UQUAD_MAX
1573# define UV_MIN PERL_UQUAD_MIN
1574# endif
cf2093f6
JH
1575# define IV_IS_QUAD
1576# define UV_IS_QUAD
79072805 1577#else
8175356b 1578# if defined(INT32_MAX) && IVSIZE == 4
5ff3f7a4
GS
1579# define IV_MAX INT32_MAX
1580# define IV_MIN INT32_MIN
716026f9
DL
1581# ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
1582# define UV_MAX UINT32_MAX
1583# else
1584# define UV_MAX 4294967295U
1585# endif
cae7ae48
JH
1586# ifndef UINT32_MIN
1587# define UINT32_MIN 0
1588# endif
5ff3f7a4
GS
1589# define UV_MIN UINT32_MIN
1590# else
1591# define IV_MAX PERL_LONG_MAX
1592# define IV_MIN PERL_LONG_MIN
1593# define UV_MAX PERL_ULONG_MAX
1594# define UV_MIN PERL_ULONG_MIN
1595# endif
8175356b 1596# if IVSIZE == 8
cf2093f6
JH
1597# define IV_IS_QUAD
1598# define UV_IS_QUAD
de1c2614
JH
1599# ifndef HAS_QUAD
1600# define HAS_QUAD
1601# endif
cf2093f6
JH
1602# else
1603# undef IV_IS_QUAD
1604# undef UV_IS_QUAD
9ea40801 1605#if !defined(PERL_CORE) || defined(USING_MSVC6)
e25d460c
NC
1606/* We think that removing this decade-old undef this will cause too much
1607 breakage on CPAN for too little gain. (See RT #119753)
9ea40801
SH
1608 However, we do need HAS_QUAD in the core for use by the drand48 code,
1609 but not for Win32 VC6 because it has poor __int64 support. */
cb4b14d5 1610# undef HAS_QUAD
e25d460c 1611#endif
cf2093f6 1612# endif
79072805 1613#endif
d7d93a81 1614
6313e544
JH
1615#define Size_t_MAX (~(Size_t)0)
1616#define SSize_t_MAX (SSize_t)(~(Size_t)0 >> 1)
9a543cee 1617
cae7ae48 1618#define IV_DIG (BIT_DIGITS(IVSIZE * 8))
22ec83e3 1619#define UV_DIG (BIT_DIGITS(UVSIZE * 8))
56431972 1620
28e5dec8 1621#ifndef NO_PERL_PRESERVE_IVUV
f5c03d33 1622#define PERL_PRESERVE_IVUV /* We like our integers to stay integers. */
28e5dec8
JH
1623#endif
1624
d460ef45 1625/*
26bb67e2
JH
1626 * The macros INT2PTR and NUM2PTR are (despite their names)
1627 * bi-directional: they will convert int/float to or from pointers.
1628 * However the conversion to int/float are named explicitly:
1629 * PTR2IV, PTR2UV, PTR2NV.
1630 *
1631 * For int conversions we do not need two casts if pointers are
1632 * the same size as IV and UV. Otherwise we need an explicit
1633 * cast (PTRV) to avoid compiler warnings.
1634 */
56431972
RB
1635#if (IVSIZE == PTRSIZE) && (UVSIZE == PTRSIZE)
1636# define PTRV UV
1637# define INT2PTR(any,d) (any)(d)
1638#else
d460ef45 1639# if PTRSIZE == LONGSIZE
56431972 1640# define PTRV unsigned long
e91e3b10 1641# define PTR2ul(p) (unsigned long)(p)
42718184 1642# else
56431972 1643# define PTRV unsigned
42718184 1644# endif
e91e3b10
RB
1645#endif
1646
1647#ifndef INT2PTR
56431972 1648# define INT2PTR(any,d) (any)(PTRV)(d)
42718184 1649#endif
e91e3b10
RB
1650
1651#ifndef PTR2ul
1652# define PTR2ul(p) INT2PTR(unsigned long,p)
1653#endif
1654
56431972
RB
1655#define NUM2PTR(any,d) (any)(PTRV)(d)
1656#define PTR2IV(p) INT2PTR(IV,p)
1657#define PTR2UV(p) INT2PTR(UV,p)
1658#define PTR2NV(p) NUM2PTR(NV,p)
e91e3b10 1659#define PTR2nat(p) (PTRV)(p) /* pointer to integer of PTRSIZE */
d460ef45 1660
8141890a
JH
1661/* According to strict ANSI C89 one cannot freely cast between
1662 * data pointers and function (code) pointers. There are at least
1663 * two ways around this. One (used below) is to do two casts,
1664 * first the other pointer to an (unsigned) integer, and then
1665 * the integer to the other pointer. The other way would be
1666 * to use unions to "overlay" the pointers. For an example of
1667 * the latter technique, see union dirpu in struct xpvio in sv.h.
1668 * The only feasible use is probably temporarily storing
1669 * function pointers in a data pointer (such as a void pointer). */
1670
e91e3b10
RB
1671#define DPTR2FPTR(t,p) ((t)PTR2nat(p)) /* data pointer to function pointer */
1672#define FPTR2DPTR(t,p) ((t)PTR2nat(p)) /* function pointer to data pointer */
8141890a 1673
65202027 1674#ifdef USE_LONG_DOUBLE
f3654d06
JH
1675# if LONG_DOUBLESIZE == DOUBLESIZE
1676# define LONG_DOUBLE_EQUALS_DOUBLE
1677# undef USE_LONG_DOUBLE /* Ouch! */
65202027
DS
1678# endif
1679#endif
1680
2d4389e4
JH
1681/* The following is all to get LDBL_DIG, in order to pick a nice
1682 default value for printing floating point numbers in Gconvert.
1683 (see config.h)
1684*/
63b481b9 1685#ifndef HAS_LDBL_DIG
68d4903c 1686# if LONG_DOUBLESIZE == 10
63b481b9
AC
1687# define LDBL_DIG 18 /* assume IEEE */
1688# elif LONG_DOUBLESIZE == 12
68d4903c 1689# define LDBL_DIG 18 /* gcc? */
63b481b9
AC
1690# elif LONG_DOUBLESIZE == 16
1691# define LDBL_DIG 33 /* assume IEEE */
1692# elif LONG_DOUBLESIZE == DOUBLESIZE
1693# define LDBL_DIG DBL_DIG /* bummer */
68d4903c 1694# endif
2d4389e4
JH
1695#endif
1696
a22e52b9 1697typedef NVTYPE NV;
8175356b 1698
792d8dab
JH
1699#ifdef I_IEEEFP
1700# include <ieeefp.h>
1701#endif
923fc586 1702
c32c3de1
JH
1703#ifdef USING_MSVC6
1704/* VC6 has broken NaN semantics: NaN == NaN returns true instead of false,
1705 * and for example NaN < IV_MIN. */
bcd8bfa9
JH
1706# define NAN_COMPARE_BROKEN
1707#endif
1708#if defined(__DECC) && defined(__osf__)
1709/* Also Tru64 cc has broken NaN comparisons. */
1710# define NAN_COMPARE_BROKEN
c32c3de1 1711#endif
6504068e
JH
1712#if defined(__sgi)
1713# define NAN_COMPARE_BROKEN
1714#endif
c32c3de1 1715
65202027 1716#ifdef USE_LONG_DOUBLE
923fc586
JH
1717# ifdef I_SUNMATH
1718# include <sunmath.h>
1719# endif
84e6cb05 1720# if defined(LDBL_DIG)
05b4a618
JH
1721# define NV_DIG LDBL_DIG
1722# ifdef LDBL_MANT_DIG
1723# define NV_MANT_DIG LDBL_MANT_DIG
1724# endif
1725# ifdef LDBL_MIN
1726# define NV_MIN LDBL_MIN
1727# endif
1728# ifdef LDBL_MAX
1729# define NV_MAX LDBL_MAX
1730# endif
1731# ifdef LDBL_MIN_EXP
1732# define NV_MIN_EXP LDBL_MIN_EXP
1733# endif
1734# ifdef LDBL_MAX_EXP
1735# define NV_MAX_EXP LDBL_MAX_EXP
1736# endif
1737# ifdef LDBL_MIN_10_EXP
1738# define NV_MIN_10_EXP LDBL_MIN_10_EXP
1739# endif
1740# ifdef LDBL_MAX_10_EXP
1741# define NV_MAX_10_EXP LDBL_MAX_10_EXP
1742# endif
1743# ifdef LDBL_EPSILON
1744# define NV_EPSILON LDBL_EPSILON
1745# endif
1746# ifdef LDBL_MAX
1747# define NV_MAX LDBL_MAX
20f6aaab 1748/* Having LDBL_MAX doesn't necessarily mean that we have LDBL_MIN... -Allen */
f4a14a62 1749# else
05b4a618
JH
1750# ifdef HUGE_VALL
1751# define NV_MAX HUGE_VALL
f4a14a62
JH
1752# endif
1753# endif
1754# endif
84e6cb05 1755# if defined(HAS_SQRTL)
8a00eddc
JH
1756# define Perl_acos acosl
1757# define Perl_asin asinl
1758# define Perl_atan atanl
940e3d56
JH
1759# define Perl_atan2 atan2l
1760# define Perl_ceil ceill
1761# define Perl_cos cosl
8a00eddc 1762# define Perl_cosh coshl
940e3d56 1763# define Perl_exp expl
55da5e5b 1764/* no Perl_fabs, but there's PERL_ABS */
940e3d56
JH
1765# define Perl_floor floorl
1766# define Perl_fmod fmodl
1767# define Perl_log logl
8a00eddc 1768# define Perl_log10 log10l
940e3d56
JH
1769# define Perl_pow powl
1770# define Perl_sin sinl
8a00eddc 1771# define Perl_sinh sinhl
940e3d56 1772# define Perl_sqrt sqrtl
8a00eddc
JH
1773# define Perl_tan tanl
1774# define Perl_tanh tanhl
68d4903c 1775# endif
a3540c92 1776/* e.g. libsunmath doesn't have modfl and frexpl as of mid-March 2000 */
05b4a618
JH
1777# ifndef Perl_modf
1778# ifdef HAS_MODFL
1779# define Perl_modf(x,y) modfl(x,y)
51997bc3
NC
1780/* eg glibc 2.2 series seems to provide modfl on ppc and arm, but has no
1781 prototype in <math.h> */
05b4a618 1782# ifndef HAS_MODFL_PROTO
a221a8a5 1783EXTERN_C long double modfl(long double, long double *);
05b4a618
JH
1784# endif
1785# elif (defined(HAS_TRUNCL) || defined(HAS_AINTL)) && defined(HAS_COPYSIGNL)
55954f19 1786 extern long double Perl_my_modfl(long double x, long double *ip);
03476e8e 1787# define Perl_modf(x,y) Perl_my_modfl(x,y)
05b4a618 1788# endif
a3540c92 1789# endif
05b4a618
JH
1790# ifndef Perl_frexp
1791# ifdef HAS_FREXPL
1792# define Perl_frexp(x,y) frexpl(x,y)
1793# else
1794# if defined(HAS_ILOGBL) && defined(HAS_SCALBNL)
1795extern long double Perl_my_frexpl(long double x, int *e);
1796# define Perl_frexp(x,y) Perl_my_frexpl(x,y)
1797# endif
03476e8e 1798# endif
a3540c92 1799# endif
05b4a618
JH
1800# ifndef Perl_ldexp
1801# ifdef HAS_LDEXPL
1802# define Perl_ldexp(x, y) ldexpl(x,y)
1803# else
1804# if defined(HAS_SCALBNL) && FLT_RADIX == 2
1805# define Perl_ldexp(x,y) scalbnl(x,y)
1806# endif
98181445
JH
1807# endif
1808# endif
38dbb4c5 1809# ifndef Perl_isnan
e4c957f4 1810# if defined(HAS_ISNANL) && !(defined(isnan) && defined(HAS_C99))
758a5d79 1811# define Perl_isnan(x) isnanl(x)
a1115378
JH
1812# elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
1813# define Perl_isnan(x) isnan(x)
758a5d79
JH
1814# endif
1815# endif
1816# ifndef Perl_isinf
e4c957f4 1817# if defined(HAS_ISINFL) && !(defined(isinf) && defined(HAS_C99))
87190886 1818# define Perl_isinf(x) isinfl(x)
a1115378
JH
1819# elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
1820# define Perl_isinf(x) isinf(x)
bcd8bfa9 1821# elif defined(LDBL_MAX) && !defined(NAN_COMPARE_BROKEN)
efcbf317 1822# define Perl_isinf(x) ((x) > LDBL_MAX || (x) < -LDBL_MAX)
a3540c92
JH
1823# endif
1824# endif
e38461cc
JH
1825# ifndef Perl_isfinite
1826# define Perl_isfinite(x) Perl_isfinitel(x)
1827# endif
84e6cb05
JH
1828#elif defined(USE_QUADMATH) && defined(I_QUADMATH)
1829# include <quadmath.h>
1830# define NV_DIG FLT128_DIG
1831# define NV_MANT_DIG FLT128_MANT_DIG
1832# define NV_MIN FLT128_MIN
1833# define NV_MAX FLT128_MAX
1834# define NV_MIN_EXP FLT128_MIN_EXP
1835# define NV_MAX_EXP FLT128_MAX_EXP
1836# define NV_EPSILON FLT128_EPSILON
1837# define NV_MIN_10_EXP FLT128_MIN_10_EXP
1838# define NV_MAX_10_EXP FLT128_MAX_10_EXP
84e6cb05
JH
1839# define Perl_acos acosq
1840# define Perl_asin asinq
1841# define Perl_atan atanq
1842# define Perl_atan2 atan2q
1843# define Perl_ceil ceilq
1844# define Perl_cos cosq
1845# define Perl_cosh coshq
1846# define Perl_exp expq
1847/* no Perl_fabs, but there's PERL_ABS */
1848# define Perl_floor floorq
1849# define Perl_fmod fmodq
1850# define Perl_log logq
1851# define Perl_log10 log10q
1852# define Perl_pow powq
1853# define Perl_sin sinq
1854# define Perl_sinh sinhq
1855# define Perl_sqrt sqrtq
1856# define Perl_tan tanq
1857# define Perl_tanh tanhq
1858# define Perl_modf(x,y) modfq(x,y)
1859# define Perl_frexp(x,y) frexpq(x,y)
1860# define Perl_ldexp(x, y) ldexpq(x,y)
1861# define Perl_isinf(x) isinfq(x)
1862# define Perl_isnan(x) isnanq(x)
1863# define Perl_isfinite(x) !(isnanq(x) || isinfq(x))
b28053d1
JH
1864# define Perl_fp_class(x) ((x) == 0.0Q ? 0 : isinfq(x) ? 3 : isnanq(x) ? 4 : PERL_ABS(x) < FLT128_MIN ? 2 : 1)
1865# define Perl_fp_class_inf(x) (Perl_fp_class(x) == 3)
1866# define Perl_fp_class_nan(x) (Perl_fp_class(x) == 4)
1867# define Perl_fp_class_norm(x) (Perl_fp_class(x) == 1)
1868# define Perl_fp_class_denorm(x) (Perl_fp_class(x) == 2)
1869# define Perl_fp_class_zero(x) (Perl_fp_class(x) == 0)
65202027 1870#else
2d4389e4 1871# define NV_DIG DBL_DIG
63b481b9
AC
1872# define NV_MANT_DIG DBL_MANT_DIG
1873# define NV_MIN DBL_MIN
1874# define NV_MAX DBL_MAX
1875# define NV_MIN_EXP DBL_MIN_EXP
1876# define NV_MAX_EXP DBL_MAX_EXP
1877# define NV_MIN_10_EXP DBL_MIN_10_EXP
1878# define NV_MAX_10_EXP DBL_MAX_10_EXP
1879# define NV_EPSILON DBL_EPSILON
1880# define NV_MAX DBL_MAX
1881# define NV_MIN DBL_MIN
940e3d56 1882
55da5e5b 1883/* These math interfaces are C89. */
8a00eddc
JH
1884# define Perl_acos acos
1885# define Perl_asin asin
1886# define Perl_atan atan
940e3d56
JH
1887# define Perl_atan2 atan2
1888# define Perl_ceil ceil
1889# define Perl_cos cos
8a00eddc 1890# define Perl_cosh cosh
940e3d56 1891# define Perl_exp exp
55da5e5b 1892/* no Perl_fabs, but there's PERL_ABS */
940e3d56
JH
1893# define Perl_floor floor
1894# define Perl_fmod fmod
1895# define Perl_log log
8a00eddc 1896# define Perl_log10 log10
940e3d56
JH
1897# define Perl_pow pow
1898# define Perl_sin sin
8a00eddc 1899# define Perl_sinh sinh
940e3d56 1900# define Perl_sqrt sqrt
8a00eddc
JH
1901# define Perl_tan tan
1902# define Perl_tanh tanh
940e3d56
JH
1903
1904# define Perl_modf(x,y) modf(x,y)
1905# define Perl_frexp(x,y) frexp(x,y)
1906# define Perl_ldexp(x,y) ldexp(x,y)
1907
1a322af2
JH
1908# ifndef Perl_isnan
1909# ifdef HAS_ISNAN
1910# define Perl_isnan(x) isnan(x)
1911# endif
1912# endif
1913# ifndef Perl_isinf
1914# if defined(HAS_ISINF)
1915# define Perl_isinf(x) isinf(x)
bcd8bfa9 1916# elif defined(DBL_MAX) && !defined(NAN_COMPARE_BROKEN)
efcbf317 1917# define Perl_isinf(x) ((x) > DBL_MAX || (x) < -DBL_MAX)
1a322af2
JH
1918# endif
1919# endif
1920# ifndef Perl_isfinite
1921# ifdef HAS_ISFINITE
1922# define Perl_isfinite(x) isfinite(x)
1923# elif defined(HAS_FINITE)
1924# define Perl_isfinite(x) finite(x)
1925# endif
1926# endif
758a5d79
JH
1927#endif
1928
30404d48
JH
1929/* fpclassify(): C99. It is supposed to be a macro that switches on
1930* the sizeof() of its argument, so there's no need for e.g. fpclassifyl().*/
1931#if !defined(Perl_fp_class) && defined(HAS_FPCLASSIFY)
1932# include <math.h>
25c46df8
JH
1933# if defined(FP_INFINITE) && defined(FP_NAN)
1934# define Perl_fp_class(x) fpclassify(x)
1935# define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
1936# define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
1937# define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
1938# define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
1939# define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
1940# elif defined(FP_PLUS_INF) && defined(FP_QNAN)
1941/* Some versions of HP-UX (10.20) have (only) fpclassify() but which is
1942 * actually not the C99 fpclassify, with its own set of return defines. */
1943# define Perl_fp_class(x) fpclassify(x)
1944# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
1945# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
82947af8 1946# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
25c46df8
JH
1947# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
1948# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
1ae51000 1949# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
25c46df8
JH
1950# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
1951# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
1952# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
1953# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
1954# else
1955# undef Perl_fp_class /* Unknown set of defines */
1956# endif
30404d48
JH
1957#endif
1958
25c46df8
JH
1959/* fp_classify(): Legacy: VMS, maybe Unicos? The values, however,
1960 * are identical to the C99 fpclassify(). */
1961#if !defined(Perl_fp_class) && defined(HAS_FP_CLASSIFY)
1962# include <math.h>
558f3e66
CB
1963# ifdef __VMS
1964 /* FP_INFINITE and others are here rather than in math.h as C99 stipulates */
1965# include <fp.h>
56610b8f
CB
1966 /* oh, and the isnormal macro has a typo in it! */
1967# undef isnormal
1968# define isnormal(x) Perl_fp_class_norm(x)
558f3e66 1969# endif
25c46df8
JH
1970# if defined(FP_INFINITE) && defined(FP_NAN)
1971# define Perl_fp_class(x) fp_classify(x)
1972# define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
1973# define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
1974# define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
1975# define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
1976# define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
1977# else
1978# undef Perl_fp_class /* Unknown set of defines */
1979# endif
f279e099 1980#endif
205f51d8 1981
30404d48
JH
1982/* Feel free to check with me for the SGI manpages, SGI testing,
1983 * etcetera, if you want to try getting this to work with IRIX.
1984 *
1985 * - Allen <allens@cpan.org> */
1986
1987/* fpclass(): SysV, at least Solaris and some versions of IRIX. */
758a5d79 1988#if !defined(Perl_fp_class) && (defined(HAS_FPCLASS)||defined(HAS_FPCLASSL))
25c46df8
JH
1989/* Solaris and IRIX have fpclass/fpclassl, but they are using
1990 * an enum typedef, not cpp symbols, and Configure doesn't detect that.
1991 * Define some symbols also as cpp symbols so we can detect them. */
033a6f7a 1992# if defined(__sun) || defined(__sgi) /* XXX Configure test instead */
25c46df8
JH
1993# define FP_PINF FP_PINF
1994# define FP_QNAN FP_QNAN
1995# endif
f279e099 1996# include <math.h>
758a5d79
JH
1997# ifdef I_IEEFP
1998# include <ieeefp.h>
1999# endif
2000# ifdef I_FP
2001# include <fp.h>
2002# endif
2003# if defined(USE_LONG_DOUBLE) && defined(HAS_FPCLASSL)
f279e099 2004# define Perl_fp_class(x) fpclassl(x)
758a5d79 2005# else
f279e099
JH
2006# define Perl_fp_class(x) fpclass(x)
2007# endif
25c46df8 2008# if defined(FP_CLASS_PINF) && defined(FP_CLASS_SNAN)
f279e099
JH
2009# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_CLASS_SNAN)
2010# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_CLASS_QNAN)
2011# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_CLASS_NINF)
2012# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_CLASS_PINF)
2013# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_CLASS_NNORM)
2014# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_CLASS_PNORM)
2015# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_CLASS_NDENORM)
2016# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_CLASS_PDENORM)
2017# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_CLASS_NZERO)
2018# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_CLASS_PZERO)
25c46df8 2019# elif defined(FP_PINF) && defined(FP_QNAN)
f279e099
JH
2020# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2021# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2022# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NINF)
2023# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PINF)
2024# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NNORM)
2025# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PNORM)
2026# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NDENORM)
2027# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PDENORM)
2028# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NZERO)
2029# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PZERO)
25c46df8
JH
2030# else
2031# undef Perl_fp_class /* Unknown set of defines */
758a5d79 2032# endif
758a5d79
JH
2033#endif
2034
30404d48
JH
2035/* fp_class(): Legacy: at least Tru64, some versions of IRIX. */
2036#if !defined(Perl_fp_class) && (defined(HAS_FP_CLASS)||defined(HAS_FP_CLASSL))
758a5d79
JH
2037# include <math.h>
2038# if !defined(FP_SNAN) && defined(I_FP_CLASS)
2039# include <fp_class.h>
2040# endif
25c46df8 2041# if defined(FP_POS_INF) && defined(FP_QNAN)
033a6f7a 2042# ifdef __sgi /* XXX Configure test instead */
25c46df8
JH
2043# ifdef USE_LONG_DOUBLE
2044# define Perl_fp_class(x) fp_class_l(x)
2045# else
2046# define Perl_fp_class(x) fp_class_d(x)
2047# endif
f279e099 2048# else
25c46df8
JH
2049# if defined(USE_LONG_DOUBLE) && defined(HAS_FP_CLASSL)
2050# define Perl_fp_class(x) fp_classl(x)
2051# else
2052# define Perl_fp_class(x) fp_class(x)
2053# endif
f279e099 2054# endif
25c46df8
JH
2055# if defined(FP_POS_INF) && defined(FP_QNAN)
2056# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2057# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2058# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NEG_INF)
2059# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_POS_INF)
2060# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NEG_NORM)
2061# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_POS_NORM)
2062# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NEG_DENORM)
2063# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_POS_DENORM)
2064# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NEG_ZERO)
2065# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_POS_ZERO)
30404d48 2066# else
25c46df8 2067# undef Perl_fp_class /* Unknown set of defines */
30404d48 2068# endif
f279e099 2069# endif
30404d48
JH
2070#endif
2071
052758ae 2072/* class(), _class(): Legacy: AIX. */
758a5d79
JH
2073#if !defined(Perl_fp_class) && defined(HAS_CLASS)
2074# include <math.h>
25c46df8
JH
2075# if defined(FP_PLUS_NORM) && defined(FP_PLUS_INF)
2076# ifndef _cplusplus
2077# define Perl_fp_class(x) class(x)
2078# else
2079# define Perl_fp_class(x) _class(x)
2080# endif
2081# if defined(FP_PLUS_INF) && defined(FP_NANQ)
2082# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_NANS)
2083# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_NANQ)
2084# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2085# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2086# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2087# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
2088# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2089# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2090# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2091# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2092# else
2093# undef Perl_fp_class /* Unknown set of defines */
2094# endif
758a5d79 2095# endif
30404d48
JH
2096#endif
2097
2098/* Win32: _fpclass(), _isnan(), _finite(). */
796ea9ea
JH
2099#ifdef WIN32
2100# ifndef Perl_isnan
2101# define Perl_isnan(x) _isnan(x)
2102# endif
2103# ifndef Perl_isfinite
2104# define Perl_isfinite(x) _finite(x)
2105# endif
2106# ifndef Perl_fp_class_snan
25c46df8
JH
2107/* No simple way to #define Perl_fp_class because _fpclass()
2108 * returns a set of bits. */
796ea9ea
JH
2109# define Perl_fp_class_snan(x) (_fpclass(x) & _FPCLASS_SNAN)
2110# define Perl_fp_class_qnan(x) (_fpclass(x) & _FPCLASS_QNAN)
82947af8 2111# define Perl_fp_class_nan(x) (_fpclass(x) & (_FPCLASS_SNAN|_FPCLASS_QNAN))
796ea9ea
JH
2112# define Perl_fp_class_ninf(x) (_fpclass(x) & _FPCLASS_NINF))
2113# define Perl_fp_class_pinf(x) (_fpclass(x) & _FPCLASS_PINF))
2114# define Perl_fp_class_inf(x) (_fpclass(x) & (_FPCLASS_NINF|_FPCLASS_PINF))
2115# define Perl_fp_class_nnorm(x) (_fpclass(x) & _FPCLASS_NN)
2116# define Perl_fp_class_pnorm(x) (_fpclass(x) & _FPCLASS_PN)
2117# define Perl_fp_class_norm(x) (_fpclass(x) & (_FPCLASS_NN|_FPCLASS_PN))
2118# define Perl_fp_class_ndenorm(x) (_fpclass(x) & _FPCLASS_ND)
2119# define Perl_fp_class_pdenorm(x) (_fpclass(x) & _FPCLASS_PD)
2120# define Perl_fp_class_denorm(x) (_fpclass(x) & (_FPCLASS_ND|_FPCLASS_PD))
2121# define Perl_fp_class_nzero(x) (_fpclass(x) & _FPCLASS_NZ)
2122# define Perl_fp_class_pzero(x) (_fpclass(x) & _FPCLASS_PZ)
2123# define Perl_fp_class_zero(x) (_fpclass(x) & (_FPCLASS_NZ|_FPCLASS_PZ))
2124# endif
f279e099
JH
2125#endif
2126
2127#if !defined(Perl_fp_class_inf) && \
2128 defined(Perl_fp_class_pinf) && defined(Perl_fp_class_ninf)
2129# define Perl_fp_class_inf(x) \
2130 (Perl_fp_class_pinf(x) || Perl_fp_class_ninf(x))
2131#endif
2132
2133#if !defined(Perl_fp_class_nan) && \
2134 defined(Perl_fp_class_snan) && defined(Perl_fp_class_qnan)
2135# define Perl_fp_class_nan(x) \
2136 (Perl_fp_class_snan(x) || Perl_fp_class_qnan(x))
2137#endif
2138
2139#if !defined(Perl_fp_class_zero) && \
2140 defined(Perl_fp_class_pzero) && defined(Perl_fp_class_nzero)
2141# define Perl_fp_class_zero(x) \
2142 (Perl_fp_class_pzero(x) || Perl_fp_class_nzero(x))
2143#endif
2144
2145#if !defined(Perl_fp_class_norm) && \
2146 defined(Perl_fp_class_pnorm) && defined(Perl_fp_class_nnorm)
2147# define Perl_fp_class_norm(x) \
2148 (Perl_fp_class_pnorm(x) || Perl_fp_class_nnorm(x))
2149#endif
2150
2151#if !defined(Perl_fp_class_denorm) && \
2152 defined(Perl_fp_class_pdenorm) && defined(Perl_fp_class_ndenorm)
2153# define Perl_fp_class_denorm(x) \
2154 (Perl_fp_class_pdenorm(x) || Perl_fp_class_ndenorm(x))
796ea9ea 2155#endif
758a5d79 2156
1a322af2
JH
2157#ifdef UNDER_CE
2158int isnan(double d);
2159#endif
2160
758a5d79 2161#ifndef Perl_isnan
1a322af2
JH
2162# ifdef Perl_fp_class_nan
2163# define Perl_isnan(x) Perl_fp_class_nan(x)
758a5d79 2164# else
1a322af2
JH
2165# ifdef HAS_UNORDERED
2166# define Perl_isnan(x) unordered((x), 0.0)
758a5d79 2167# else
1a322af2 2168# define Perl_isnan(x) ((x)!=(x))
758a5d79
JH
2169# endif
2170# endif
2171#endif
2172
1a322af2
JH
2173#ifndef Perl_isinf
2174# ifdef Perl_fp_class_inf
2175# define Perl_isinf(x) Perl_fp_class_inf(x)
2176# endif
ca6c63e1
JH
2177#endif
2178
758a5d79 2179#ifndef Perl_isfinite
25c46df8 2180# if defined(HAS_ISFINITE) && !defined(isfinite)
c496ca58 2181# define Perl_isfinite(x) isfinite((double)(x))
4efd38a4 2182# elif defined(HAS_FINITE)
c496ca58 2183# define Perl_isfinite(x) finite((double)(x))
4efd38a4
JH
2184# elif defined(Perl_fp_class_finite)
2185# define Perl_isfinite(x) Perl_fp_class_finite(x)
758a5d79 2186# else
c496ca58
JH
2187/* For the infinities the multiplication returns nan,
2188 * for the nan the multiplication also returns nan,
2189 * for everything else (that is, finite) zero should be returned. */
4efd38a4 2190# define Perl_isfinite(x) (((x) * 0) == 0)
a3540c92 2191# endif
65202027
DS
2192#endif
2193
25c46df8
JH
2194#ifndef Perl_isinf
2195# if defined(Perl_isfinite) && defined(Perl_isnan)
2196# define Perl_isinf(x) !(Perl_isfinite(x)||Perl_isnan(x))
2197# endif
2198#endif
2199
d3685250
JH
2200/* We need Perl_isfinitel (ends with ell) (if available) even when
2201 * not USE_LONG_DOUBLE because the printf code (sv_catpvfn_flags)
2202 * needs that. */
2203#if defined(HAS_LONG_DOUBLE) && !defined(Perl_isfinitel)
2204/* If isfinite() is a macro and looks like we have C99,
2205 * we assume it's the type-aware C99 isfinite(). */
c06e9e3e 2206# if defined(HAS_ISFINITE) && defined(isfinite) && defined(HAS_C99)
d3685250
JH
2207# define Perl_isfinitel(x) isfinite(x)
2208# elif defined(HAS_ISFINITEL)
2209# define Perl_isfinitel(x) isfinitel(x)
2210# elif defined(HAS_FINITEL)
2211# define Perl_isfinitel(x) finitel(x)
2212# elif defined(HAS_INFL) && defined(HAS_NANL)
2213# define Perl_isfinitel(x) !(isinfl(x)||isnanl(x))
16334e6e 2214# else
99bf9e32 2215# define Perl_isfinitel(x) ((x) * 0 == 0) /* See Perl_isfinite. */
d3685250
JH
2216# endif
2217#endif
2218
a36244b7
JH
2219/* The default is to use Perl's own atof() implementation (in numeric.c).
2220 * Usually that is the one to use but for some platforms (e.g. UNICOS)
2221 * it is however best to use the native implementation of atof.
2222 * You can experiment with using your native one by -DUSE_PERL_ATOF=0.
2223 * Some good tests to try out with either setting are t/base/num.t,
205f51d8
AS
2224 * t/op/numconvert.t, and t/op/pack.t. Note that if using long doubles
2225 * you may need to be using a different function than atof! */
a36244b7
JH
2226
2227#ifndef USE_PERL_ATOF
2228# ifndef _UNICOS
2229# define USE_PERL_ATOF
2230# endif
2231#else
2232# if USE_PERL_ATOF == 0
2233# undef USE_PERL_ATOF
2234# endif
2235#endif
2236
2237#ifdef USE_PERL_ATOF
2238# define Perl_atof(s) Perl_my_atof(s)
2239# define Perl_atof2(s, n) Perl_my_atof2(aTHX_ (s), &(n))
2240#else
2241# define Perl_atof(s) (NV)atof(s)
2242# define Perl_atof2(s, n) ((n) = atof(s))
2243#endif
cf2093f6 2244
d460ef45 2245/* Previously these definitions used hardcoded figures.
760ac839
LW
2246 * It is hoped these formula are more portable, although
2247 * no data one way or another is presently known to me.
2248 * The "PERL_" names are used because these calculated constants
2249 * do not meet the ANSI requirements for LONG_MAX, etc., which
2250 * need to be constants acceptable to #if - kja
2251 * define PERL_LONG_MAX 2147483647L
2252 * define PERL_LONG_MIN (-LONG_MAX - 1)
2253 * define PERL ULONG_MAX 4294967295L
2254 */
2255
99abf803
PP
2256/*
2257 * Try to figure out max and min values for the integral types. THE CORRECT
2258 * SOLUTION TO THIS MESS: ADAPT enquire.c FROM GCC INTO CONFIGURE. The
2259 * following hacks are used if neither limits.h or values.h provide them:
2260 * U<TYPE>_MAX: for types >= int: ~(unsigned TYPE)0
2261 * for types < int: (unsigned TYPE)~(unsigned)0
2262 * The argument to ~ must be unsigned so that later signed->unsigned
2263 * conversion can't modify the value's bit pattern (e.g. -0 -> +0),
2264 * and it must not be smaller than int because ~ does integral promotion.
2265 * <type>_MAX: (<type>) (U<type>_MAX >> 1)
2266 * <type>_MIN: -<type>_MAX - <is_twos_complement_architecture: (3 & -1) == 3>.
2267 * The latter is a hack which happens to work on some machines but
2268 * does *not* catch any random system, or things like integer types
2269 * with NaN if that is possible.
2270 *
2271 * All of the types are explicitly cast to prevent accidental loss of
2272 * numeric range, and in the hope that they will be less likely to confuse
2273 * over-eager optimizers.
2274 *
2275 */
27d4fb96 2276
99abf803
PP
2277#define PERL_UCHAR_MIN ((unsigned char)0)
2278
2279#ifdef UCHAR_MAX
2280# define PERL_UCHAR_MAX ((unsigned char)UCHAR_MAX)
27d4fb96 2281#else
99abf803
PP
2282# ifdef MAXUCHAR
2283# define PERL_UCHAR_MAX ((unsigned char)MAXUCHAR)
27d4fb96 2284# else
99abf803 2285# define PERL_UCHAR_MAX ((unsigned char)~(unsigned)0)
27d4fb96
PP
2286# endif
2287#endif
d460ef45 2288
99abf803
PP
2289/*
2290 * CHAR_MIN and CHAR_MAX are not included here, as the (char) type may be
2291 * ambiguous. It may be equivalent to (signed char) or (unsigned char)
2292 * depending on local options. Until Configure detects this (or at least
2293 * detects whether the "signed" keyword is available) the CHAR ranges
2294 * will not be included. UCHAR functions normally.
2295 * - kja
2296 */
27d4fb96 2297
99abf803
PP
2298#define PERL_USHORT_MIN ((unsigned short)0)
2299
2300#ifdef USHORT_MAX
2301# define PERL_USHORT_MAX ((unsigned short)USHORT_MAX)
27d4fb96 2302#else
99abf803
PP
2303# ifdef MAXUSHORT
2304# define PERL_USHORT_MAX ((unsigned short)MAXUSHORT)
27d4fb96 2305# else
ef2f54b0
CB
2306# ifdef USHRT_MAX
2307# define PERL_USHORT_MAX ((unsigned short)USHRT_MAX)
2308# else
2309# define PERL_USHORT_MAX ((unsigned short)~(unsigned)0)
2310# endif
27d4fb96
PP
2311# endif
2312#endif
2313
27d4fb96 2314#ifdef SHORT_MAX
99abf803 2315# define PERL_SHORT_MAX ((short)SHORT_MAX)
27d4fb96
PP
2316#else
2317# ifdef MAXSHORT /* Often used in <values.h> */
99abf803 2318# define PERL_SHORT_MAX ((short)MAXSHORT)
27d4fb96 2319# else
ef2f54b0
CB
2320# ifdef SHRT_MAX
2321# define PERL_SHORT_MAX ((short)SHRT_MAX)
2322# else
2323# define PERL_SHORT_MAX ((short) (PERL_USHORT_MAX >> 1))
2324# endif
27d4fb96
PP
2325# endif
2326#endif
2327
2328#ifdef SHORT_MIN
99abf803 2329# define PERL_SHORT_MIN ((short)SHORT_MIN)
27d4fb96
PP
2330#else
2331# ifdef MINSHORT
99abf803 2332# define PERL_SHORT_MIN ((short)MINSHORT)
27d4fb96 2333# else
ef2f54b0
CB
2334# ifdef SHRT_MIN
2335# define PERL_SHORT_MIN ((short)SHRT_MIN)
2336# else
2337# define PERL_SHORT_MIN (-PERL_SHORT_MAX - ((3 & -1) == 3))
2338# endif
27d4fb96
PP
2339# endif
2340#endif
2341
99abf803
PP
2342#ifdef UINT_MAX
2343# define PERL_UINT_MAX ((unsigned int)UINT_MAX)
27d4fb96 2344#else
99abf803
PP
2345# ifdef MAXUINT
2346# define PERL_UINT_MAX ((unsigned int)MAXUINT)
27d4fb96 2347# else
99abf803 2348# define PERL_UINT_MAX (~(unsigned int)0)
27d4fb96
PP
2349# endif
2350#endif
2351
99abf803 2352#define PERL_UINT_MIN ((unsigned int)0)
27d4fb96
PP
2353
2354#ifdef INT_MAX
99abf803 2355# define PERL_INT_MAX ((int)INT_MAX)
27d4fb96
PP
2356#else
2357# ifdef MAXINT /* Often used in <values.h> */
99abf803 2358# define PERL_INT_MAX ((int)MAXINT)
27d4fb96 2359# else
99abf803 2360# define PERL_INT_MAX ((int)(PERL_UINT_MAX >> 1))
27d4fb96
PP
2361# endif
2362#endif
2363
2364#ifdef INT_MIN
99abf803 2365# define PERL_INT_MIN ((int)INT_MIN)
27d4fb96
PP
2366#else
2367# ifdef MININT
99abf803 2368# define PERL_INT_MIN ((int)MININT)
27d4fb96
PP
2369# else
2370# define PERL_INT_MIN (-PERL_INT_MAX - ((3 & -1) == 3))
2371# endif
2372#endif
2373
99abf803
PP
2374#ifdef ULONG_MAX
2375# define PERL_ULONG_MAX ((unsigned long)ULONG_MAX)
27d4fb96 2376#else
99abf803
PP
2377# ifdef MAXULONG
2378# define PERL_ULONG_MAX ((unsigned long)MAXULONG)
27d4fb96 2379# else
99abf803 2380# define PERL_ULONG_MAX (~(unsigned long)0)
27d4fb96
PP
2381# endif
2382#endif
2383
99abf803 2384#define PERL_ULONG_MIN ((unsigned long)0L)
27d4fb96 2385
760ac839 2386#ifdef LONG_MAX
99abf803 2387# define PERL_LONG_MAX ((long)LONG_MAX)
760ac839
LW
2388#else
2389# ifdef MAXLONG /* Often used in <values.h> */
99abf803 2390# define PERL_LONG_MAX ((long)MAXLONG)
760ac839 2391# else
99abf803 2392# define PERL_LONG_MAX ((long) (PERL_ULONG_MAX >> 1))
760ac839
LW
2393# endif
2394#endif
2395
2396#ifdef LONG_MIN
99abf803 2397# define PERL_LONG_MIN ((long)LONG_MIN)
760ac839
LW
2398#else
2399# ifdef MINLONG
99abf803 2400# define PERL_LONG_MIN ((long)MINLONG)
760ac839 2401# else
27d4fb96 2402# define PERL_LONG_MIN (-PERL_LONG_MAX - ((3 & -1) == 3))
760ac839
LW
2403# endif
2404#endif
2405
d7d93a81 2406#ifdef UV_IS_QUAD
99abf803 2407
99abf803 2408# define PERL_UQUAD_MAX (~(UV)0)
f1c3b19a 2409# define PERL_UQUAD_MIN ((UV)0)
99abf803 2410# define PERL_QUAD_MAX ((IV) (PERL_UQUAD_MAX >> 1))
a6e633de 2411# define PERL_QUAD_MIN (-PERL_QUAD_MAX - ((3 & -1) == 3))
27d4fb96 2412
79072805
LW
2413#endif
2414
ee0007ab 2415typedef MEM_SIZE STRLEN;
450a55e4 2416
79072805
LW
2417typedef struct op OP;
2418typedef struct cop COP;
2419typedef struct unop UNOP;
2f7c6295 2420typedef struct unop_aux UNOP_AUX;
79072805
LW
2421typedef struct binop BINOP;
2422typedef struct listop LISTOP;
2423typedef struct logop LOGOP;
79072805
LW
2424typedef struct pmop PMOP;
2425typedef struct svop SVOP;
7934575e 2426typedef struct padop PADOP;
79072805 2427typedef struct pvop PVOP;
79072805 2428typedef struct loop LOOP;
b46e009d 2429typedef struct methop METHOP;
79072805 2430
7aef8e5b 2431#ifdef PERL_CORE
8be227ab
FC
2432typedef struct opslab OPSLAB;
2433typedef struct opslot OPSLOT;
2434#endif
2435
52db365a 2436typedef struct block_hooks BHK;
1830b3d9 2437typedef struct custom_op XOP;
52db365a 2438
cd1541b2
NC
2439typedef struct interpreter PerlInterpreter;
2440
d2b3f365 2441/* SGI's <sys/sema.h> has struct sv */
cc3315ba 2442#if defined(__sgi)
d2b3f365 2443# define STRUCT_SV perl_sv
b8d3c5db
JH
2444#else
2445# define STRUCT_SV sv
2446#endif
2447typedef struct STRUCT_SV SV;
79072805
LW
2448typedef struct av AV;
2449typedef struct hv HV;
2450typedef struct cv CV;
d2f13c59 2451typedef struct p5rx REGEXP;
79072805 2452typedef struct gp GP;
0c30d9ec 2453typedef struct gv GV;
8990e307 2454typedef struct io IO;
c09156bb 2455typedef struct context PERL_CONTEXT;
79072805
LW
2456typedef struct block BLOCK;
2457
2458typedef struct magic MAGIC;
2459typedef struct xpv XPV;
2460typedef struct xpviv XPVIV;
ff68c719 2461typedef struct xpvuv XPVUV;
79072805
LW
2462typedef struct xpvnv XPVNV;
2463typedef struct xpvmg XPVMG;
2464typedef struct xpvlv XPVLV;
d361b004 2465typedef struct xpvinvlist XINVLIST;
79072805
LW
2466typedef struct xpvav XPVAV;
2467typedef struct xpvhv XPVHV;
2468typedef struct xpvgv XPVGV;
2469typedef struct xpvcv XPVCV;
2470typedef struct xpvbm XPVBM;
2471typedef struct xpvfm XPVFM;
8990e307 2472typedef struct xpvio XPVIO;
79072805
LW
2473typedef struct mgvtbl MGVTBL;
2474typedef union any ANY;
5f7fde29
GS
2475typedef struct ptr_tbl_ent PTR_TBL_ENT_t;
2476typedef struct ptr_tbl PTR_TBL_t;
8cf8f3d1
NIS
2477typedef struct clone_params CLONE_PARAMS;
2478
0f94cb1f 2479/* a pad is currently just an AV; but that might change,
7261499d
FC
2480 * so hide the type. */
2481typedef struct padlist PADLIST;
67634234 2482typedef AV PAD;
9b7476d7 2483typedef struct padnamelist PADNAMELIST;
0f94cb1f 2484typedef struct padname PADNAME;
67634234 2485
5d32d268
DM
2486/* enable PERL_OP_PARENT by default */
2487#if !defined(PERL_OP_PARENT) && !defined(PERL_NO_OP_PARENT)
2488# define PERL_OP_PARENT
2489#endif
2490
93c10d60
FC
2491/* enable PERL_COPY_ON_WRITE by default */
2492#if !defined(PERL_COPY_ON_WRITE) && !defined(PERL_NO_COW)
2493# define PERL_COPY_ON_WRITE
13b0f67d 2494#endif
07d01d6e 2495
93c10d60 2496#ifdef PERL_COPY_ON_WRITE
db2c6cb3 2497# define PERL_ANY_COW
9f351b45
DM
2498#else
2499# define PERL_SAWAMPERSAND
db2c6cb3
FC
2500#endif
2501
40653c20
FC
2502#if defined(PERL_DEBUG_READONLY_OPS) && !defined(USE_ITHREADS)
2503# error PERL_DEBUG_READONLY_OPS only works with ithreads
2504#endif
2505
378cc40b 2506#include "handy.h"
64935bc6 2507#include "charclass_invlists.h"
a0d0e21e 2508
6b8eaf93 2509#if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_RAWIO)
6b8eaf93
JH
2510# if LSEEKSIZE == 8 && !defined(USE_64_BIT_RAWIO)
2511# define USE_64_BIT_RAWIO /* implicit */
2512# endif
4564133c
JH
2513#endif
2514
6b8eaf93
JH
2515/* Notice the use of HAS_FSEEKO: now we are obligated to always use
2516 * fseeko/ftello if possible. Don't go #defining ftell to ftello yourself,
2517 * however, because operating systems like to do that themself. */
2518#ifndef FSEEKSIZE
2519# ifdef HAS_FSEEKO
2520# define FSEEKSIZE LSEEKSIZE
2521# else
2522# define FSEEKSIZE LONGSIZE
d460ef45 2523# endif
6b8eaf93
JH
2524#endif
2525
2526#if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_STDIO)
6b8eaf93
JH
2527# if FSEEKSIZE == 8 && !defined(USE_64_BIT_STDIO)
2528# define USE_64_BIT_STDIO /* implicit */
2529# endif
2530#endif
4564133c 2531
09458382 2532#ifdef USE_64_BIT_RAWIO
d9b3e12d
JH
2533# ifdef HAS_OFF64_T
2534# undef Off_t
2535# define Off_t off64_t
2536# undef LSEEKSIZE
2537# define LSEEKSIZE 8
5ff3f7a4 2538# endif
d9b3e12d
JH
2539/* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
2540 * will trigger defines like the ones below. Some 64-bit environments,
09458382 2541 * however, do not. Therefore we have to explicitly mix and match. */
d9b3e12d
JH
2542# if defined(USE_OPEN64)
2543# define open open64
5ff3f7a4 2544# endif
d9b3e12d
JH
2545# if defined(USE_LSEEK64)
2546# define lseek lseek64
6b8eaf93
JH
2547# else
2548# if defined(USE_LLSEEK)
2549# define lseek llseek
2550# endif
d9b3e12d
JH
2551# endif
2552# if defined(USE_STAT64)
2553# define stat stat64
2554# endif
2555# if defined(USE_FSTAT64)
2556# define fstat fstat64
2557# endif
2558# if defined(USE_LSTAT64)
2559# define lstat lstat64
2560# endif
2561# if defined(USE_FLOCK64)
2562# define flock flock64
2563# endif
2564# if defined(USE_LOCKF64)
2565# define lockf lockf64
2566# endif
2567# if defined(USE_FCNTL64)
2568# define fcntl fcntl64
2569# endif
2570# if defined(USE_TRUNCATE64)
2571# define truncate truncate64
2572# endif
2573# if defined(USE_FTRUNCATE64)
2574# define ftruncate ftruncate64
2575# endif
2576#endif
2577
2578#ifdef USE_64_BIT_STDIO
2579# ifdef HAS_FPOS64_T
2580# undef Fpos_t
2581# define Fpos_t fpos64_t
2582# endif
2583/* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
2584 * will trigger defines like the ones below. Some 64-bit environments,
2585 * however, do not. */
2586# if defined(USE_FOPEN64)
2587# define fopen fopen64
2588# endif
2589# if defined(USE_FSEEK64)
6b8eaf93 2590# define fseek fseek64 /* don't do fseeko here, see perlio.c */
d9b3e12d
JH
2591# endif
2592# if defined(USE_FTELL64)
6b8eaf93 2593# define ftell ftell64 /* don't do ftello here, see perlio.c */
d9b3e12d
JH
2594# endif
2595# if defined(USE_FSETPOS64)
2596# define fsetpos fsetpos64
2597# endif
2598# if defined(USE_FGETPOS64)
2599# define fgetpos fgetpos64
2600# endif
2601# if defined(USE_TMPFILE64)
2602# define tmpfile tmpfile64
2603# endif
2604# if defined(USE_FREOPEN64)
2605# define freopen freopen64
5ff3f7a4
GS
2606# endif
2607#endif
2608
e37778c2 2609#if defined(OS2)
2c2d71f5
JH
2610# include "iperlsys.h"
2611#endif
2612
748a9306 2613#ifdef DOSISH
19848b3f
JH
2614# if defined(OS2)
2615# include "os2ish.h"
2616# else
2617# include "dosish.h"
2618# endif
009819bb 2619#elif defined(VMS)
748a9306 2620# include "vmsish.h"
009819bb 2621#elif defined(PLAN9)
19848b3f 2622# include "./plan9/plan9ish.h"
009819bb 2623#elif defined(__VOS__)
196918b0
PG
2624# ifdef __GNUC__
2625# include "./vos/vosish.h"
2626# else
2627# include "vos/vosish.h"
2628# endif
009819bb 2629#elif defined(__SYMBIAN32__)
27da23d5 2630# include "symbian/symbianish.h"
009819bb 2631#elif defined(__HAIKU__)
df00ff3b 2632# include "haiku/haikuish.h"
009819bb 2633#else
19848b3f 2634# include "unixish.h"
13b6e58c
JH
2635#endif
2636
ea34f6bd 2637#ifdef __amigaos4__
3c0208ad
AB
2638# include "amigaos.h"
2639# undef FD_CLOEXEC /* a lie in AmigaOS */
2640#endif
2641
2946a158
JH
2642/* NSIG logic from Configure --> */
2643/* Strange style to avoid deeply-nested #if/#else/#endif */
2644#ifndef NSIG
2645# ifdef _NSIG
2646# define NSIG (_NSIG)
2647# endif
2648#endif
2649
2650#ifndef NSIG
2651# ifdef SIGMAX
2652# define NSIG (SIGMAX+1)
2653# endif
2654#endif
2655
2656#ifndef NSIG
2657# ifdef SIG_MAX
2658# define NSIG (SIG_MAX+1)
2659# endif
2660#endif
2661
2662#ifndef NSIG
2663# ifdef _SIG_MAX
2664# define NSIG (_SIG_MAX+1)
2665# endif
2666#endif
2667
2668#ifndef NSIG
2669# ifdef MAXSIG
2670# define NSIG (MAXSIG+1)
2671# endif
2672#endif
2673
2674#ifndef NSIG
2675# ifdef MAX_SIG
2676# define NSIG (MAX_SIG+1)
2677# endif
2678#endif
2679
2680#ifndef NSIG
2681# ifdef SIGARRAYSIZE
2682# define NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
2683# endif
2684#endif
2685
2686#ifndef NSIG
2687# ifdef _sys_nsig
2688# define NSIG (_sys_nsig) /* Solaris 2.5 */
2689# endif
2690#endif
2691
2692/* Default to some arbitrary number that's big enough to get most
2693 of the common signals.
2694*/
2695#ifndef NSIG
2696# define NSIG 50
2697#endif
2698/* <-- NSIG logic from Configure */
2699
13b6e58c
JH
2700#ifndef NO_ENVIRON_ARRAY
2701# define USE_ENVIRON_ARRAY
2702#endif
32f822de 2703
c77b533b
JH
2704/*
2705 * initialise to avoid floating-point exceptions from overflow, etc
2706 */
2707#ifndef PERL_FPU_INIT
2708# ifdef HAS_FPSETMASK
2709# if HAS_FLOATINGPOINT_H
2710# include <floatingpoint.h>
2711# endif
ad3a8c67
NC
2712/* Some operating systems have this as a macro, which in turn expands to a comma
2713 expression, and the last sub-expression is something that gets calculated,
2714 and then they have the gall to warn that a value computed is not used. Hence
2715 cast to void. */
2716# define PERL_FPU_INIT (void)fpsetmask(0)
c77b533b 2717# else
2f42fcb0 2718# if defined(SIGFPE) && defined(SIG_IGN) && !defined(PERL_MICRO)
7f7c3354 2719# define PERL_FPU_INIT PL_sigfpe_saved = (Sighandler_t) signal(SIGFPE, SIG_IGN)
b35112e7
CS
2720# define PERL_FPU_PRE_EXEC { Sigsave_t xfpe; rsignal_save(SIGFPE, PL_sigfpe_saved, &xfpe);
2721# define PERL_FPU_POST_EXEC rsignal_restore(SIGFPE, &xfpe); }
7014c407
JH
2722# else
2723# define PERL_FPU_INIT
2f42fcb0 2724
7014c407 2725# endif
c77b533b
JH
2726# endif
2727#endif
b35112e7
CS
2728#ifndef PERL_FPU_PRE_EXEC
2729# define PERL_FPU_PRE_EXEC {
2730# define PERL_FPU_POST_EXEC }
2731#endif
c77b533b 2732
a308b05a
JH
2733/* In Tru64 the cc -ieee enables the IEEE math but disables traps.
2734 * We need to reenable the "invalid" trap because otherwise generation
2735 * of NaN values leaves the IEEE fp flags in bad state, leaving any further
2736 * fp ops behaving strangely (Inf + 1 resulting in zero, for example). */
2737#ifdef __osf__
2738# include <machine/fpu.h>
2739# define PERL_SYS_FPU_INIT \
2740 STMT_START { \
2741 ieee_set_fp_control(IEEE_TRAP_ENABLE_INV); \
2742 signal(SIGFPE, SIG_IGN); \
2743 } STMT_END
2744#endif
94a08944
JH
2745/* In IRIX the default for Flush to Zero bit is true,
2746 * which means that results going below the minimum of normal
2747 * floating points go to zero, instead of going denormal/subnormal.
2748 * This is unlike almost any other system running Perl, so let's clear it.
2749 * [perl #123767] IRIX64 blead (ddce084a) opbasic/arith.t failure, originally
2750 * [perl #120426] small numbers shouldn't round to zero if they have extra floating digits
2751 *
2752 * XXX The flush-to-zero behaviour should be a Configure scan.
2753 * To change the behaviour usually requires some system-specific
2754 * incantation, though, like the below. */
2755#ifdef __sgi
2756# include <sys/fpu.h>
2757# define PERL_SYS_FPU_INIT \
2758 STMT_START { \
2759 union fpc_csr csr; \
2760 csr.fc_word = get_fpc_csr(); \
2761 csr.fc_struct.flush = 0; \
2762 set_fpc_csr(csr.fc_word); \
2763 } STMT_END
2764#endif
a308b05a
JH
2765
2766#ifndef PERL_SYS_FPU_INIT
2767# define PERL_SYS_FPU_INIT NOOP
2768#endif
2769
cbec8ebe
DM
2770#ifndef PERL_SYS_INIT3_BODY
2771# define PERL_SYS_INIT3_BODY(argvp,argcp,envp) PERL_SYS_INIT_BODY(argvp,argcp)
ed344e4f
IZ
2772#endif
2773
eb533572 2774/*
dcccc8ff
KW
2775=head1 Miscellaneous Functions
2776
4ad9e498 2777=for apidoc Am|void|PERL_SYS_INIT|int *argc|char*** argv
eb533572 2778Provides system-specific tune up of the C runtime environment necessary to
72d33970 2779run Perl interpreters. This should be called only once, before creating
eb533572
DM
2780any Perl interpreters.
2781
4ad9e498 2782=for apidoc Am|void|PERL_SYS_INIT3|int *argc|char*** argv|char*** env
eb533572 2783Provides system-specific tune up of the C runtime environment necessary to
72d33970 2784run Perl interpreters. This should be called only once, before creating
eb533572
DM
2785any Perl interpreters.
2786
2787=for apidoc Am|void|PERL_SYS_TERM|
2788Provides system-specific clean up of the C runtime environment after
72d33970 2789running Perl interpreters. This should be called only once, after
eb533572
DM
2790freeing any remaining Perl interpreters.
2791
2792=cut
2793 */
2794
cbec8ebe
DM
2795#define PERL_SYS_INIT(argc, argv) Perl_sys_init(argc, argv)
2796#define PERL_SYS_INIT3(argc, argv, env) Perl_sys_init3(argc, argv, env)
d0820ef1 2797#define PERL_SYS_TERM() Perl_sys_term()
cbec8ebe 2798
be708cc0
JH
2799#ifndef PERL_WRITE_MSG_TO_CONSOLE
2800# define PERL_WRITE_MSG_TO_CONSOLE(io, msg, len) PerlIO_write(io, msg, len)
2801#endif
2802
0f31cffe
GS
2803#ifndef MAXPATHLEN
2804# ifdef PATH_MAX
b990c8b2
JH
2805# ifdef _POSIX_PATH_MAX
2806# if PATH_MAX > _POSIX_PATH_MAX
09448d78
JH
2807/* POSIX 1990 (and pre) was ambiguous about whether PATH_MAX
2808 * included the null byte or not. Later amendments of POSIX,
2809 * XPG4, the Austin Group, and the Single UNIX Specification
2810 * all explicitly include the null byte in the PATH_MAX.
2811 * Ditto for _POSIX_PATH_MAX. */
2812# define MAXPATHLEN PATH_MAX
b990c8b2 2813# else
09448d78 2814# define MAXPATHLEN _POSIX_PATH_MAX
b990c8b2
JH
2815# endif
2816# else
2817# define MAXPATHLEN (PATH_MAX+1)
2818# endif
0f31cffe 2819# else
d552bce8 2820# define MAXPATHLEN 1024 /* Err on the large side. */
0f31cffe
GS
2821# endif
2822#endif
2823
c80263a8
SH
2824/* In case Configure was not used (we are using a "canned config"
2825 * such as Win32, or a cross-compilation setup, for example) try going
2826 * by the gcc major and minor versions. One useful URL is
2827 * http://www.ohse.de/uwe/articles/gcc-attributes.html,
2828 * but contrary to this information warn_unused_result seems
2829 * not to be in gcc 3.3.5, at least. --jhi
42bf5550
AD
2830 * Also, when building extensions with an installed perl, this allows
2831 * the user to upgrade gcc and get the right attributes, rather than
2832 * relying on the list generated at Configure time. --AD
c80263a8
SH
2833 * Set these up now otherwise we get confused when some of the <*thread.h>
2834 * includes below indirectly pull in <perlio.h> (which needs to know if we
2835 * have HASATTRIBUTE_FORMAT).
2836 */
2837
4d7c7898 2838#ifndef PERL_MICRO
fc2007d4 2839#if defined __GNUC__ && !defined(__INTEL_COMPILER)
6a387721
RGS
2840# if __GNUC__ == 3 && __GNUC_MINOR__ >= 1 || __GNUC__ > 3 /* 3.1 -> */
2841# define HASATTRIBUTE_DEPRECATED
2842# endif
c80263a8
SH
2843# if __GNUC__ >= 3 /* 3.0 -> */ /* XXX Verify this version */
2844# define HASATTRIBUTE_FORMAT
63cdf24b
SH
2845# if defined __MINGW32__
2846# define PRINTF_FORMAT_NULL_OK
2847# endif
c80263a8
SH
2848# endif
2849# if __GNUC__ >= 3 /* 3.0 -> */
2850# define HASATTRIBUTE_MALLOC
2851# endif
2852# if __GNUC__ == 3 && __GNUC_MINOR__ >= 3 || __GNUC__ > 3 /* 3.3 -> */
2853# define HASATTRIBUTE_NONNULL
2854# endif
2855# if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 || __GNUC__ > 2 /* 2.5 -> */
2856# define HASATTRIBUTE_NORETURN
2857# endif
2858# if __GNUC__ >= 3 /* gcc 3.0 -> */
2859# define HASATTRIBUTE_PURE
2860# endif
42bf5550 2861# if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 /* 3.4 -> */
c80263a8
SH
2862# define HASATTRIBUTE_UNUSED
2863# endif
d324fe49
AD
2864# if __GNUC__ == 3 && __GNUC_MINOR__ == 3 && !defined(__cplusplus)
2865# define HASATTRIBUTE_UNUSED /* gcc-3.3, but not g++-3.3. */
2866# endif
c80263a8
SH
2867# if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 /* 3.4 -> */
2868# define HASATTRIBUTE_WARN_UNUSED_RESULT
2869# endif
2870#endif
00f254e2 2871#endif /* #ifndef PERL_MICRO */
c80263a8 2872
3db8f154 2873/* USE_5005THREADS needs to be after unixish.h as <pthread.h> includes
dd96f567 2874 * <sys/signal.h> which defines NSIG - which will stop inclusion of <signal.h>
32f822de
GS
2875 * this results in many functions being undeclared which bothers C++
2876 * May make sense to have threads after "*ish.h" anyway
2877 */
2878
3baee7cc
JH
2879/* clang Thread Safety Analysis/Annotations/Attributes
2880 * http://clang.llvm.org/docs/ThreadSafetyAnalysis.html
2881 *
bdc795f4 2882 * Available since clang 3.6-ish (appeared in 3.4, but shaky still in 3.5).
3baee7cc 2883 * Apple XCode hijacks __clang_major__ and __clang_minor__
bdc795f4
JH
2884 * (6.1 means really clang 3.6), so needs extra hijinks
2885 * (could probably also test the contents of __apple_build_version__).
3baee7cc
JH
2886 */
2887#if defined(USE_ITHREADS) && defined(I_PTHREAD) && \
2888 defined(__clang__) && \
ab0fe36e
DM
2889 !defined(PERL_GLOBAL_STRUCT) && \
2890 !defined(PERL_GLOBAL_STRUCT_PRIVATE) && \
3baee7cc
JH
2891 !defined(SWIG) && \
2892 ((!defined(__apple_build_version__) && \
bdc795f4 2893 ((__clang_major__ == 3 && __clang_minor__ >= 6) || \
8412ccf9 2894 (__clang_major__ >= 4))) || \
3baee7cc 2895 (defined(__apple_build_version__) && \
bdc795f4
JH
2896 ((__clang_major__ == 6 && __clang_minor__ >= 1) || \
2897 (__clang_major__ >= 7))))
3baee7cc
JH
2898# define PERL_TSA__(x) __attribute__((x))
2899# define PERL_TSA_ACTIVE
2900#else
2901# define PERL_TSA__(x) /* No TSA, make TSA attributes no-ops. */
2902# undef PERL_TSA_ACTIVE
2903#endif
2904
2905/* PERL_TSA_CAPABILITY() is used to annotate typedefs.
2906 * typedef old_type PERL_TSA_CAPABILITY("mutex") new_type;
2907 */
2908#define PERL_TSA_CAPABILITY(x) \
2909 PERL_TSA__(capability(x))
2910
2911/* In the below examples the mutex must be lexically visible, usually
2912 * either as global variables, or as function arguments. */
2913
2914/* PERL_TSA_GUARDED_BY() is used to annotate global variables.
2915 *
2916 * Foo foo PERL_TSA_GUARDED_BY(mutex);
2917 */
2918#define PERL_TSA_GUARDED_BY(x) \
2919 PERL_TSA__(guarded_by(x))
2920
2921/* PERL_TSA_PT_GUARDED_BY() is used to annotate global pointers.
2922 * The data _behind_ the pointer is guarded.
2923 *
2924 * Foo* ptr PERL_TSA_PT_GUARDED_BY(mutex);
2925 */
2926#define PERL_TSA_PT_GUARDED_BY(x) \
2927 PERL_TSA__(pt_guarded_by(x))
2928
2929/* PERL_TSA_REQUIRES() is used to annotate functions.
2930 * The caller MUST hold the resource when calling the function.
2931 *
2932 * void Foo() PERL_TSA_REQUIRES(mutex);
2933 */
2934#define PERL_TSA_REQUIRES(x) \
2935 PERL_TSA__(requires_capability(x))
2936
2937/* PERL_TSA_EXCLUDES() is used to annotate functions.
2938 * The caller MUST NOT hold resource when calling the function.
2939 *
2940 * EXCLUDES should be used when the function first acquires
2941 * the resource and then releases it. Use to avoid deadlock.
2942 *
2943 * void Foo() PERL_TSA_EXCLUDES(mutex);
2944 */
2945#define PERL_TSA_EXCLUDES(x) \
2946 PERL_TSA__(locks_excluded(x))
2947
2948/* PERL_TSA_ACQUIRE() is used to annotate functions.
2949 * The caller MUST NOT hold the resource when calling the function,
2950 * and the function will acquire the resource.
2951 *
2952 * void Foo() PERL_TSA_ACQUIRE(mutex);
2953 */
2954#define PERL_TSA_ACQUIRE(x) \
2955 PERL_TSA__(acquire_capability(x))
2956
2957/* PERL_TSA_RELEASE() is used to annotate functions.
2958 * The caller MUST hold the resource when calling the function,
2959 * and the function will release the resource.
2960 *
2961 * void Foo() PERL_TSA_RELEASE(mutex);
2962 */
2963#define PERL_TSA_RELEASE(x) \
2964 PERL_TSA__(release_capability(x))
2965
2966/* PERL_TSA_NO_TSA is used to annotate functions.
2967 * Used when being intentionally unsafe, or when the code is too
2968 * complicated for the analysis. Use sparingly.
2969 *
2970 * void Foo() PERL_TSA_NO_TSA;
2971 */
2972#define PERL_TSA_NO_TSA \
2973 PERL_TSA__(no_thread_safety_analysis)
2974
2975/* There are more annotations/attributes available, see the clang
2976 * documentation for details. */
2977
3db8f154 2978#if defined(USE_ITHREADS)
2986a63f
JH
2979# ifdef NETWARE
2980# include <nw5thread.h>
2981# else
32f822de
GS
2982# ifdef WIN32
2983# include <win32thread.h>
2984# else
dd96f567
IZ
2985# ifdef OS2
2986# include "os2thread.h"
2987# else
7f3d1cf1 2988# ifdef I_MACH_CTHREADS
bdd66968 2989# include <mach/cthreads.h>
7f3d1cf1
BH
2990typedef cthread_t perl_os_thread;
2991typedef mutex_t perl_mutex;
2992typedef condition_t perl_cond;
2993typedef void * perl_key;
2994# else /* Posix threads */
1f5ae88c
JH
2995# ifdef I_PTHREAD
2996# include <pthread.h>
2997# endif
7f3d1cf1 2998typedef pthread_t perl_os_thread;
3baee7cc 2999typedef pthread_mutex_t PERL_TSA_CAPABILITY("mutex") perl_mutex;
7f3d1cf1
BH
3000typedef pthread_cond_t perl_cond;
3001typedef pthread_key_t perl_key;
3002# endif /* I_MACH_CTHREADS */
dd96f567 3003# endif /* OS2 */
32f822de 3004# endif /* WIN32 */
ef4abe76 3005# endif /* NETWARE */
3db8f154 3006#endif /* USE_ITHREADS */
c5be433b 3007
3baee7cc
JH
3008#ifdef PERL_TSA_ACTIVE
3009/* Since most pthread mutex interfaces have not been annotated, we
3010 * need to have these wrappers. The NO_TSA annotation is quite ugly
3011 * but it cannot be avoided in plain C, unlike in C++, where one could
3012 * e.g. use ACQUIRE() with no arg on a mutex lock method.
3013 *
3014 * The bodies of these wrappers are in util.c
3015 *
3016 * TODO: however, some platforms are starting to get these clang
3017 * thread safety annotations for pthreads, for example FreeBSD.
3018 * Do we need a way to a bypass these wrappers? */
67083b7b 3019EXTERN_C int perl_tsa_mutex_lock(perl_mutex* mutex)
3baee7cc
JH
3020 PERL_TSA_ACQUIRE(*mutex)
3021 PERL_TSA_NO_TSA;
67083b7b 3022EXTERN_C int perl_tsa_mutex_unlock(perl_mutex* mutex)
3baee7cc
JH
3023 PERL_TSA_RELEASE(*mutex)
3024 PERL_TSA_NO_TSA;
3025#endif
3026
66a93824 3027#if defined(WIN32)
1feb2720 3028# include "win32.h"
c5be433b
GS
3029#endif
3030
2986a63f
JH
3031#ifdef NETWARE
3032# include "netware.h"
3033#endif
3034
e5218da5 3035#define STATUS_UNIX PL_statusvalue
68dc0745 3036#ifdef VMS
6b88bc9c 3037# define STATUS_NATIVE PL_statusvalue_vms
7a7fd8e0
JM
3038/*
3039 * vaxc$errno is only guaranteed to be valid if errno == EVMSERR, otherwise
ff7298cb 3040 * its contents can not be trusted. Unfortunately, Perl seems to check
7a7fd8e0
JM
3041 * it on exit, so it when PL_statusvalue_vms is updated, vaxc$errno should
3042 * be updated also.
3043 */
3044# include <stsdef.h>
3045# include <ssdef.h>
3046/* Presume this because if VMS changes it, it will require a new
3047 * set of APIs for waiting on children for binary compatibility.
3048 */
3049# define child_offset_bits (8)
3050# ifndef C_FAC_POSIX
3051# define C_FAC_POSIX 0x35A000
3052# endif
3053
3054/* STATUS_EXIT - validates and returns a NATIVE exit status code for the
3055 * platform from the existing UNIX or Native status values.
3056 */
3057
37038d91 3058# define STATUS_EXIT \
7a7fd8e0
JM
3059 (((I32)PL_statusvalue_vms == -1 ? SS$_ABORT : PL_statusvalue_vms) | \
3060 (VMSISH_HUSHED ? STS$M_INHIB_MSG : 0))
3061
7a7fd8e0 3062
fb38d079
JM
3063/* STATUS_NATIVE_CHILD_SET - Calculate UNIX status that matches the child
3064 * exit code and shifts the UNIX value over the correct number of bits to
3065 * be a child status. Usually the number of bits is 8, but that could be
3066 * platform dependent. The NATIVE status code is presumed to have either
3067 * from a child process.
7a7fd8e0
JM
3068 */
3069
fb38d079
JM
3070/* This is complicated. The child processes return a true native VMS
3071 status which must be saved. But there is an assumption in Perl that
3072 the UNIX child status has some relationship to errno values, so
00f254e2 3073 Perl tries to translate it to text in some of the tests.
fb38d079
JM
3074 In order to get the string translation correct, for the error, errno
3075 must be EVMSERR, but that generates a different text message
3076 than what the test programs are expecting. So an errno value must
3077 be derived from the native status value when an error occurs.
3078 That will hide the true native status message. With this version of
3079 perl, the true native child status can always be retrieved so that
3080 is not a problem. But in this case, Pl_statusvalue and errno may
3081 have different values in them.
3082 */
7a7fd8e0 3083
fb38d079 3084# define STATUS_NATIVE_CHILD_SET(n) \
68dc0745 3085 STMT_START { \
2fbb330f
JM
3086 I32 evalue = (I32)n; \
3087 if (evalue == EVMSERR) { \
3088 PL_statusvalue_vms = vaxc$errno; \
3089 PL_statusvalue = evalue; \
7a7fd8e0 3090 } else { \
2fbb330f 3091 PL_statusvalue_vms = evalue; \
fb38d079 3092 if (evalue == -1) { \
3280af22 3093 PL_statusvalue = -1; \
7a7fd8e0
JM
3094 PL_statusvalue_vms = SS$_ABORT; /* Should not happen */ \
3095 } else \
fb38d079 3096 PL_statusvalue = Perl_vms_status_to_unix(evalue, 1); \
2fbb330f 3097 set_vaxc_errno(evalue); \
fb38d079
JM
3098 if ((PL_statusvalue_vms & C_FAC_POSIX) == C_FAC_POSIX) \
3099 set_errno(EVMSERR); \
3100 else set_errno(Perl_vms_status_to_unix(evalue, 0)); \
3101 PL_statusvalue = PL_statusvalue << child_offset_bits; \
2fbb330f 3102 } \
68dc0745 3103 } STMT_END
7a7fd8e0 3104
68dc0745 3105# ifdef VMSISH_STATUS
e5218da5 3106# define STATUS_CURRENT (VMSISH_STATUS ? STATUS_NATIVE : STATUS_UNIX)
68dc0745 3107# else
e5218da5 3108# define STATUS_CURRENT STATUS_UNIX
68dc0745 3109# endif
7a7fd8e0
JM
3110
3111 /* STATUS_UNIX_SET - takes a UNIX/POSIX errno value and attempts to update
3112 * the NATIVE status to an equivalent value. Can not be used to translate
3113 * exit code values as exit code values are not guaranteed to have any
3114 * relationship at all to errno values.
3115 * This is used when Perl is forcing errno to have a specific value.
3116 */
e5218da5 3117# define STATUS_UNIX_SET(n) \
68dc0745 3118 STMT_START { \
7a7fd8e0 3119 I32 evalue = (I32)n; \
0968cdad 3120 PL_statusvalue = evalue; \
3280af22 3121 if (PL_statusvalue != -1) { \
0968cdad
JM
3122 if (PL_statusvalue != EVMSERR) { \
3123 PL_statusvalue &= 0xFFFF; \
3124 if (MY_POSIX_EXIT) \
3125 PL_statusvalue_vms=PL_statusvalue ? SS$_ABORT : SS$_NORMAL;\
3126 else PL_statusvalue_vms = Perl_unix_status_to_vms(evalue); \
3127 } \
3128 else { \
3129 PL_statusvalue_vms = vaxc$errno; \
3130 } \
68dc0745 3131 } \
0968cdad
JM
3132 else PL_statusvalue_vms = SS$_ABORT; \
3133 set_vaxc_errno(PL_statusvalue_vms); \
7a7fd8e0
JM
3134 } STMT_END
3135
3136 /* STATUS_UNIX_EXIT_SET - Takes a UNIX/POSIX exit code and sets
e08e1e1d
JM
3137 * the NATIVE error status based on it.
3138 *
3139 * When in the default mode to comply with the Perl VMS documentation,
3140 * 0 is a success and any other code sets the NATIVE status to a failure
3141 * code of SS$_ABORT.
fb38d079
JM
3142 *
3143 * In the new POSIX EXIT mode, native status will be set so that the
3144 * actual exit code will can be retrieved by the calling program or
3145 * shell.
3146 *
3147 * If the exit code is not clearly a UNIX parent or child exit status,
3148 * it will be passed through as a VMS status.
7a7fd8e0
JM
3149 */
3150
fb38d079 3151# define STATUS_UNIX_EXIT_SET(n) \
7a7fd8e0
JM
3152 STMT_START { \
3153 I32 evalue = (I32)n; \
3154 PL_statusvalue = evalue; \
e08e1e1d
JM
3155 if (MY_POSIX_EXIT) { \
3156 if (evalue <= 0xFF00) { \
3157 if (evalue > 0xFF) \
3158 evalue = (evalue >> child_offset_bits) & 0xFF; \
3159 PL_statusvalue_vms = \
3160 (C_FAC_POSIX | (evalue << 3 ) | \
3161 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1)); \
3162 } else /* forgive them Perl, for they have sinned */ \
3163 PL_statusvalue_vms = evalue; \
3164 } else { \
3165 if (evalue == 0) \
3166 PL_statusvalue_vms = SS$_NORMAL; \
3167 else if (evalue <= 0xFF00) \
3168 PL_statusvalue_vms = SS$_ABORT; \
3169 else { /* forgive them Perl, for they have sinned */ \
3170 if (evalue != EVMSERR) PL_statusvalue_vms = evalue; \
3171 else PL_statusvalue_vms = vaxc$errno; \
3172 /* And obviously used a VMS status value instead of UNIX */ \
3173 PL_statusvalue = EVMSERR; \
3174 } \
3175 set_vaxc_errno(PL_statusvalue_vms); \
3176 } \
68dc0745 3177 } STMT_END
fb38d079 3178
e08e1e1d 3179
6ac6a52b
JM
3180 /* STATUS_EXIT_SET - Takes a NATIVE/UNIX/POSIX exit code
3181 * and sets the NATIVE error status based on it. This special case
3182 * is needed to maintain compatibility with past VMS behavior.
3183 *
3184 * In the default mode on VMS, this number is passed through as
3185 * both the NATIVE and UNIX status. Which makes it different
3186 * that the STATUS_UNIX_EXIT_SET.
3187 *
3188 * In the new POSIX EXIT mode, native status will be set so that the
3189 * actual exit code will can be retrieved by the calling program or
3190 * shell.
3191 *
1a3aec58
JM
3192 * A POSIX exit code is from 0 to 255. If the exit code is higher
3193 * than this, it needs to be assumed that it is a VMS exit code and
3194 * passed through.
6ac6a52b
JM
3195 */
3196
3197# define STATUS_EXIT_SET(n) \
3198 STMT_START { \
3199 I32 evalue = (I32)n; \
3200 PL_statusvalue = evalue; \
3201 if (MY_POSIX_EXIT) \
1a3aec58
JM
3202 if (evalue > 255) PL_statusvalue_vms = evalue; else { \
3203 PL_statusvalue_vms = \
3204 (C_FAC_POSIX | (evalue << 3 ) | \
3205 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1));} \
6ac6a52b
JM
3206 else \
3207 PL_statusvalue_vms = evalue ? evalue : SS$_NORMAL; \
3208 set_vaxc_errno(PL_statusvalue_vms); \
3209 } STMT_END
3210
fb38d079
JM
3211
3212 /* This macro forces a success status */
7a7fd8e0
JM
3213# define STATUS_ALL_SUCCESS \
3214 (PL_statusvalue = 0, PL_statusvalue_vms = SS$_NORMAL)
fb38d079
JM
3215
3216 /* This macro forces a failure status */
7a7fd8e0
JM
3217# define STATUS_ALL_FAILURE (PL_statusvalue = 1, \
3218 vaxc$errno = PL_statusvalue_vms = MY_POSIX_EXIT ? \
3219 (C_FAC_POSIX | (1 << 3) | STS$K_ERROR | STS$M_INHIB_MSG) : SS$_ABORT)
fb38d079 3220
738ab09f
AB
3221#elif defined(__amigaos4__)
3222 /* A somewhat experimental attempt to simulate posix return code values */
3223# define STATUS_NATIVE PL_statusvalue_posix
3224# define STATUS_NATIVE_CHILD_SET(n) \
3225 STMT_START { \
3226 PL_statusvalue_posix = (n); \
3227 if (PL_statusvalue_posix < 0) { \
3228 PL_statusvalue = -1; \
3229 } \
3230 else { \
3231 PL_statusvalue = n << 8; \
3232 } \
3233 } STMT_END
3234# define STATUS_UNIX_SET(n) \
3235 STMT_START { \
3236 PL_statusvalue = (n); \
3237 if (PL_statusvalue != -1) \
3238 PL_statusvalue &= 0xFFFF; \
3239 } STMT_END
3240# define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
3241# define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
3242# define STATUS_CURRENT STATUS_UNIX
3243# define STATUS_EXIT STATUS_UNIX
3244# define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3245# define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
3246
68dc0745 3247#else
e5218da5 3248# define STATUS_NATIVE PL_statusvalue_posix
e5218da5 3249# if defined(WCOREDUMP)
37038d91 3250# define STATUS_NATIVE_CHILD_SET(n) \
e5218da5
GA
3251 STMT_START { \
3252 PL_statusvalue_posix = (n); \
3253 if (PL_statusvalue_posix == -1) \
3254 PL_statusvalue = -1; \
3255 else { \
3256 PL_statusvalue = \
3257 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3258 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0) | \
3259 (WIFSIGNALED(PL_statusvalue_posix) && WCOREDUMP(PL_statusvalue_posix) ? 0x80 : 0); \
3260 } \
3261 } STMT_END
3262# elif defined(WIFEXITED)
37038d91 3263# define STATUS_NATIVE_CHILD_SET(n) \
e5218da5
GA
3264 STMT_START { \
3265 PL_statusvalue_posix = (n); \
3266 if (PL_statusvalue_posix == -1) \
3267 PL_statusvalue = -1; \
3268 else { \
3269 PL_statusvalue = \
3270 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3271 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0); \
3272 } \
3273 } STMT_END
3274# else
37038d91 3275# define STATUS_NATIVE_CHILD_SET(n) \
e5218da5
GA
3276 STMT_START { \
3277 PL_statusvalue_posix = (n); \
3278 if (PL_statusvalue_posix == -1) \
3279 PL_statusvalue = -1; \
3280 else { \
3281 PL_statusvalue = \
3282 PL_statusvalue_posix & 0xFFFF; \
3283 } \
3284 } STMT_END
3285# endif
3286# define STATUS_UNIX_SET(n) \
68dc0745 3287 STMT_START { \
3280af22
NIS
3288 PL_statusvalue = (n); \
3289 if (PL_statusvalue != -1) \
3290 PL_statusvalue &= 0xFFFF; \
68dc0745 3291 } STMT_END
7a7fd8e0 3292# define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
6ac6a52b 3293# define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
e5218da5 3294# define STATUS_CURRENT STATUS_UNIX
37038d91 3295# define STATUS_EXIT STATUS_UNIX
e5218da5
GA
3296# define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3297# define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
68dc0745
PP
3298#endif
3299
cc3604b1
GS
3300/* flags in PL_exit_flags for nature of exit() */
3301#define PERL_EXIT_EXPECTED 0x01
31d77e54 3302#define PERL_EXIT_DESTRUCT_END 0x02 /* Run END in perl_destruct */
6136213b
JGM
3303#define PERL_EXIT_WARN 0x04 /* Warn if Perl_my_exit() or Perl_my_failure_exit() called */
3304#define PERL_EXIT_ABORT 0x08 /* Call abort() if Perl_my_exit() or Perl_my_failure_exit() called */
cc3604b1 3305
b79b76e0 3306#ifndef PERL_CORE
a7cb1f99 3307/* format to use for version numbers in file/directory names */
273cf8d1 3308/* XXX move to Configure? */
b79b76e0
NC
3309/* This was only ever used for the current version, and that can be done at
3310 compile time, as PERL_FS_VERSION, so should we just delete it? */
3311# ifndef PERL_FS_VER_FMT
3312# define PERL_FS_VER_FMT "%d.%d.%d"
3313# endif
3314#endif
3315
3316#ifndef PERL_FS_VERSION
3317# define PERL_FS_VERSION PERL_VERSION_STRING
0b94c7bb
GS
3318#endif
3319
45bc9206 3320/* This defines a way to flush all output buffers. This may be a
76549fef
JH
3321 * performance issue, so we allow people to disable it. Also, if
3322 * we are using stdio, there are broken implementations of fflush(NULL)
3323 * out there, Solaris being the most prominent.
45bc9206
GS
3324 */
3325#ifndef PERL_FLUSHALL_FOR_CHILD
97cb92d6 3326# if defined(USE_PERLIO) || defined(FFLUSH_NULL)
66fe083f 3327# define PERL_FLUSHALL_FOR_CHILD PerlIO_flush((PerlIO*)NULL)
767df6a1
JH
3328# else
3329# ifdef FFLUSH_ALL
3330# define PERL_FLUSHALL_FOR_CHILD my_fflush_all()
e2dbf222 3331# else
c5be433b 3332# define PERL_FLUSHALL_FOR_CHILD NOOP
767df6a1 3333# endif
66fe083f 3334# endif
45bc9206
GS
3335#endif
3336
7766f137
GS
3337#ifndef PERL_WAIT_FOR_CHILDREN
3338# define PERL_WAIT_FOR_CHILDREN NOOP
3339#endif
3340
ba869deb 3341/* the traditional thread-unsafe notion of "current interpreter". */
c5be433b
GS
3342#ifndef PERL_SET_INTERP
3343# define PERL_SET_INTERP(i) (PL_curinterp = (PerlInterpreter*)(i))
3344#endif
3345
3346#ifndef PERL_GET_INTERP
3347# define PERL_GET_INTERP (PL_curinterp)
3348#endif
3349
54aff467 3350#if defined(PERL_IMPLICIT_CONTEXT) && !defined(PERL_GET_THX)
54aff467 3351# ifdef MULTIPLICITY
ba869deb 3352# define PERL_GET_THX ((PerlInterpreter *)PERL_GET_CONTEXT)
54aff467 3353# endif
ba869deb
GS
3354# define PERL_SET_THX(t) PERL_SET_CONTEXT(t)
3355#endif
3356
00f254e2 3357/*
8896765a 3358 This replaces the previous %_ "hack" by the "%p" hacks.
0dbb1585 3359 All that is required is that the perl source does not
00f254e2
KW
3360 use "%-p" or "%-<number>p" or "%<number>p" formats.
3361 These formats will still work in perl code.
486ec47a 3362 See comments in sv.c for further details.
8896765a 3363
8896765a 3364 Robin Barker 2005-07-14
f46d31f2 3365
00f254e2 3366 No longer use %1p for VDf = %vd. RMB 2007-10-19
0dbb1585 3367*/
8896765a
RB
3368
3369#ifndef SVf_
63ce7bf0 3370# define SVf_(n) "-" STRINGIFY(n) "p"
894356b3
GS
3371#endif
3372
8896765a 3373#ifndef SVf
104abab4 3374# define SVf "-p"
d2560b70
RB
3375#endif
3376
014ead4b 3377#ifndef SVf32
8896765a 3378# define SVf32 SVf_(32)
014ead4b
RB
3379#endif
3380
3381#ifndef SVf256
8896765a
RB
3382# define SVf256 SVf_(256)
3383#endif
3384
be2597df
MHM
3385#define SVfARG(p) ((void*)(p))
3386
20023040
FC
3387#ifndef HEKf
3388# define HEKf "2p"
3389#endif
3390
b8fa5213
FC
3391/* Not ideal, but we cannot easily include a number in an already-numeric
3392 * format sequence. */
3393#ifndef HEKf256
3394# define HEKf256 "3p"
3395#endif
3396
20023040
FC
3397#define HEKfARG(p) ((void*)(p))
3398
b17a0679
FC
3399/* Takes three arguments: is_utf8, length, str */
3400#ifndef UTF8f
61608bb7 3401# define UTF8f "d%" UVuf "%4p"
b17a0679
FC
3402#endif
3403#define UTF8fARG(u,l,p) (int)cBOOL(u), (UV)(l), (void*)(p)
3404
0f94cb1f
FC
3405#define PNf UTF8f
3406#define PNfARG(pn) (int)1, (UV)PadnameLEN(pn), (void *)PadnamePV(pn)
0d1e9135 3407
f46d31f2 3408#ifdef PERL_CORE
486ec47a 3409/* not used; but needed for backward compatibility with XS code? - RMB */
7776bb98
RB
3410# undef UVf
3411#else
170cd9e9
NC
3412# ifndef UVf
3413# define UVf UVuf
3414# endif
d2560b70
RB
3415#endif
3416
fcdf39cf
RGS
3417#ifdef HASATTRIBUTE_DEPRECATED
3418# define __attribute__deprecated__ __attribute__((deprecated))
3419#endif
0dbb1585
AL
3420#ifdef HASATTRIBUTE_FORMAT
3421# define __attribute__format__(x,y,z) __attribute__((format(x,y,z)))
3422#endif
3423#ifdef HASATTRIBUTE_MALLOC
77785eea 3424# define __attribute__malloc__ __attribute__((__malloc__))
f22be1b8 3425#endif
0dbb1585 3426#ifdef HASATTRIBUTE_NONNULL
abb2c242 3427# define __attribute__nonnull__(a) __attribute__((nonnull(a)))
f22be1b8 3428#endif
0dbb1585 3429#ifdef HASATTRIBUTE_NORETURN
abb2c242 3430# define __attribute__noreturn__ __attribute__((noreturn))
f22be1b8 3431#endif
0dbb1585 3432#ifdef HASATTRIBUTE_PURE
abb2c242 3433# define __attribute__pure__ __attribute__((pure))
f22be1b8 3434#endif
0dbb1585
AL
3435#ifdef HASATTRIBUTE_UNUSED
3436# define __attribute__unused__ __attribute__((unused))
3437#endif
3438#ifdef HASATTRIBUTE_WARN_UNUSED_RESULT
abb2c242 3439# define __attribute__warn_unused_result__ __attribute__((warn_unused_result))
f22be1b8
JH
3440#endif
3441
0dbb1585 3442/* If we haven't defined the attributes yet, define them to blank. */
fcdf39cf
RGS
3443#ifndef __attribute__deprecated__
3444# define __attribute__deprecated__
3445#endif
0dbb1585
AL
3446#ifndef __attribute__format__
3447# define __attribute__format__(x,y,z)
3448#endif
f22be1b8 3449#ifndef __attribute__malloc__
abb2c242 3450# define __attribute__malloc__
f22be1b8
JH
3451#endif
3452#ifndef __attribute__nonnull__
abb2c242 3453# define __attribute__nonnull__(a)
f22be1b8
JH
3454#endif
3455#ifndef __attribute__noreturn__
abb2c242 3456# define __attribute__noreturn__
f22be1b8
JH
3457#endif
3458#ifndef __attribute__pure__
abb2c242 3459# define __attribute__pure__
f22be1b8 3460#endif
0dbb1585
AL
3461#ifndef __attribute__unused__
3462# define __attribute__unused__
3463#endif
f22be1b8 3464#ifndef __attribute__warn_unused_result__
abb2c242
JH
3465# define __attribute__warn_unused_result__
3466#endif
3467
6d59e610
LM
3468#ifdef I_ASSERT
3469# if !defined(DEBUGGING) && !defined(NDEBUG)
3470# define NDEBUG 1
3471# endif
cd13e623
JH
3472# include <assert.h>
3473#endif
3474
0dbb1585
AL
3475/* For functions that are marked as __attribute__noreturn__, it's not
3476 appropriate to call return. In either case, include the lint directive.
3477 */
3478#ifdef HASATTRIBUTE_NORETURN
bc3d2941 3479# define NORETURN_FUNCTION_END NOT_REACHED;
0dbb1585 3480#else
bc3d2941 3481# define NORETURN_FUNCTION_END NOT_REACHED; return 0
abb2c242
JH
3482#endif
3483
cdfeb707
RB
3484/* Some OS warn on NULL format to printf */
3485#ifdef PRINTF_FORMAT_NULL_OK
3486# define __attribute__format__null_ok__(x,y,z) __attribute__format__(x,y,z)
3487#else
00f254e2 3488# define __attribute__format__null_ok__(x,y,z)
cdfeb707
RB
3489#endif
3490
635aebb7 3491#ifdef HAS_BUILTIN_EXPECT
b37c2d43
AL
3492# define EXPECT(expr,val) __builtin_expect(expr,val)
3493#else
3494# define EXPECT(expr,val) (expr)
3495#endif
6d5abc62
NC
3496#define LIKELY(cond) EXPECT(cBOOL(cond),TRUE)
3497#define UNLIKELY(cond) EXPECT(cBOOL(cond),FALSE)
635aebb7
AL
3498#ifdef HAS_BUILTIN_CHOOSE_EXPR
3499/* placeholder */
3500#endif
b37c2d43 3501
a36ca6de 3502/* STATIC_ASSERT_DECL/STATIC_ASSERT_STMT are like assert(), but for compile
5074d4c5
LM
3503 time invariants. That is, their argument must be a constant expression that
3504 can be verified by the compiler. This expression can contain anything that's
3505 known to the compiler, e.g. #define constants, enums, or sizeof (...). If
3506 the expression evaluates to 0, compilation fails.
3507 Because they generate no runtime code (i.e. their use is "free"), they're
3508 always active, even under non-DEBUGGING builds.
a36ca6de 3509 STATIC_ASSERT_DECL expands to a declaration and is suitable for use at
5074d4c5
LM
3510 file scope (outside of any function).
3511 STATIC_ASSERT_STMT expands to a statement and is suitable for use inside a
3512 function.
3513*/
7ea096df 3514#if (defined(static_assert) || (defined(__cplusplus) && __cplusplus >= 201103L)) && (!defined(__IBMC__) || __IBMC__ >= 1210)
6d59e610 3515/* static_assert is a macro defined in <assert.h> in C11 or a compiler
a36ca6de
LM
3516 builtin in C++11. But IBM XL C V11 does not support _Static_assert, no
3517 matter what <assert.h> says.
6d59e610 3518*/
a36ca6de 3519# define STATIC_ASSERT_DECL(COND) static_assert(COND, #COND)
6d59e610
LM
3520#else
3521/* We use a bit-field instead of an array because gcc accepts
3522 'typedef char x[n]' where n is not a compile-time constant.
3523 We want to enforce constantness.
3524*/
3525# define STATIC_ASSERT_2(COND, SUFFIX) \
3526 typedef struct { \
3527 unsigned int _static_assertion_failed_##SUFFIX : (COND) ? 1 : -1; \
3528 } _static_assertion_failed_##SUFFIX PERL_UNUSED_DECL
3529# define STATIC_ASSERT_1(COND, SUFFIX) STATIC_ASSERT_2(COND, SUFFIX)
a36ca6de 3530# define STATIC_ASSERT_DECL(COND) STATIC_ASSERT_1(COND, __LINE__)
6d59e610
LM
3531#endif
3532/* We need this wrapper even in C11 because 'case X: static_assert(...);' is an
3533 error (static_assert is a declaration, and only statements can have labels).
3534*/
21aae866 3535#define STATIC_ASSERT_STMT(COND) STMT_START { STATIC_ASSERT_DECL(COND); } STMT_END
ae103e09
DD
3536
3537#ifndef __has_builtin
3538# define __has_builtin(x) 0 /* not a clang style compiler */
3539#endif
3540
3541/* ASSUME is like assert(), but it has a benefit in a release build. It is a
3542 hint to a compiler about a statement of fact in a function call free
3543 expression, which allows the compiler to generate better machine code.
3544 In a debug build, ASSUME(x) is a synonym for assert(x). ASSUME(0) means
3545 the control path is unreachable. In a for loop, ASSUME can be used to hint
b8fda935 3546 that a loop will run at least X times. ASSUME is based off MSVC's __assume
ae103e09
DD
3547 intrinsic function, see its documents for more details.
3548*/
3549
3550#ifndef DEBUGGING
3551# if __has_builtin(__builtin_unreachable) \
d1020b40 3552 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5 || __GNUC__ > 4) /* 4.5 -> */
ae103e09
DD
3553# define ASSUME(x) ((x) ? (void) 0 : __builtin_unreachable())
3554# elif defined(_MSC_VER)
3555# define ASSUME(x) __assume(x)
3556# elif defined(__ARMCC_VERSION) /* untested */
3557# define ASSUME(x) __promise(x)
3558# else
3559/* a random compiler might define assert to its own special optimization token
3560 so pass it through to C lib as a last resort */
3561# define ASSUME(x) assert(x)
3562# endif
3563#else
3564# define ASSUME(x) assert(x)
3565#endif
3566
dbc47c6f
KW
3567#if defined(__sun) /* ASSUME() generates warnings on Solaris */
3568# define NOT_REACHED
2145f4b6
LM
3569#elif defined(DEBUGGING) && (__has_builtin(__builtin_unreachable) \
3570 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5 || __GNUC__ > 4)) /* 4.5 -> */
3571# define NOT_REACHED STMT_START { ASSUME(0); __builtin_unreachable(); } STMT_END
dbc47c6f
KW
3572#else
3573# define NOT_REACHED ASSUME(0)
3574#endif
ae103e09 3575
3fc1aec6
PP
3576/* Some unistd.h's give a prototype for pause() even though
3577 HAS_PAUSE ends up undefined. This causes the #define
d2560b70 3578 below to be rejected by the compiler. Sigh.
3fc1aec6
PP
3579*/
3580#ifdef HAS_PAUSE
3581#define Pause pause
3582#else
3583#define Pause() sleep((32767<<16)+32767)
748a9306
LW
3584#endif
3585
3586#ifndef IOCPARM_LEN
3587# ifdef IOCPARM_MASK
61f1c44b 3588 /* on BSDish systems we're safe */
748a9306
LW
3589# define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
3590# else
61f1c44b 3591# if defined(_IOC_SIZE) && defined(__GLIBC__)
301eb2f0
GA
3592 /* on Linux systems we're safe; except when we're not [perl #38223] */
3593# define IOCPARM_LEN(x) (_IOC_SIZE(x) < 256 ? 256 : _IOC_SIZE(x))
61f1c44b 3594# else
748a9306 3595 /* otherwise guess at what's safe */
61f1c44b
JVD
3596# define IOCPARM_LEN(x) 256
3597# endif
748a9306 3598# endif
a0d0e21e
LW
3599#endif
3600
1761cee5 3601#if defined(__CYGWIN__)
521e0776
GS
3602/* USEMYBINMODE
3603 * This symbol, if defined, indicates that the program should
16fe6d59 3604 * use the routine my_binmode(FILE *fp, char iotype, int mode) to insure
521e0776
GS
3605 * that a file is in "binary" mode -- that is, that no translation
3606 * of bytes occurs on read or write operations.
3607 */
36894f0b 3608# define USEMYBINMODE /**/
77a40698 3609# include <io.h> /* for setmode() prototype */
16fe6d59 3610# define my_binmode(fp, iotype, mode) \
8298454c 3611 cBOOL(PerlLIO_setmode(fileno(fp), mode) != -1)
5aabfad6
PP
3612#endif
3613
88d10794
JH
3614#ifdef __CYGWIN__
3615void init_os_extras(void);
3616#endif
3617
cea2e8a9
GS
3618#ifdef UNION_ANY_DEFINITION
3619UNION_ANY_DEFINITION;
3620#else
3621union any {
3622 void* any_ptr;
c9728782
DM
3623 SV* any_sv;
3624 SV** any_svp;
3625 GV* any_gv;
3626 AV* any_av;
3627 HV* any_hv;
6ffb8402 3628 OP* any_op;
c9728782
DM
3629 char* any_pv;
3630 char** any_pvp;
cea2e8a9 3631 I32 any_i32;
ae103e09 3632 U32 any_u32;
cea2e8a9 3633 IV any_iv;
c6bf6a65 3634 UV any_uv;
cea2e8a9 3635 long any_long;
9febdf04 3636 bool any_bool;
c76ac1ee 3637 void (*any_dptr) (void*);
acfe0abc 3638 void (*any_dxptr) (pTHX_ void*);
cea2e8a9
GS
3639};
3640#endif
3641
acfe0abc 3642typedef I32 (*filter_t) (pTHX_ int, SV *, int);
cea2e8a9
GS
3643
3644#define FILTER_READ(idx, sv, len) filter_read(idx, sv, len)
5486870f
DM
3645#define FILTER_DATA(idx) \
3646 (PL_parser ? AvARRAY(PL_parser->rsfp_filters)[idx] : NULL)
3647#define FILTER_ISREADER(idx) \
3648 (PL_parser && PL_parser->rsfp_filters \
3649 && idx >= AvFILLp(PL_parser->rsfp_filters))
3650#define PERL_FILTER_EXISTS(i) \
3651 (PL_parser && PL_parser->rsfp_filters \
b9f2b683 3652 && (i) <= av_tindex(PL_parser->rsfp_filters))
cea2e8a9 3653
c5078cac
JH
3654#if defined(_AIX) && !defined(_AIX43)
3655#if defined(USE_REENTRANT) || defined(_REENTRANT) || defined(_THREAD_SAFE)
3656/* We cannot include <crypt.h> to get the struct crypt_data
3657 * because of setkey prototype problems when threading */
3658typedef struct crypt_data { /* straight from /usr/include/crypt.h */
3659 /* From OSF, Not needed in AIX
3660 char C[28], D[28];
3661 */
3662 char E[48];
3663 char KS[16][48];
3664 char block[66];
3665 char iobuf[16];
3666} CRYPTD;
3667#endif /* threading */
3668#endif /* AIX */
3669
fc6bde6f
DD
3670#ifndef PERL_CALLCONV
3671# ifdef __cplusplus
3672# define PERL_CALLCONV extern "C"
3673# else
3674# define PERL_CALLCONV
3675# endif
3676#endif
3677#ifndef PERL_CALLCONV_NO_RET
3678# define PERL_CALLCONV_NO_RET PERL_CALLCONV
3679#endif
3680
3681/* PERL_STATIC_NO_RET is supposed to be equivalent to STATIC on builds that
3682 dont have a noreturn as a declaration specifier
3683*/
3684#ifndef PERL_STATIC_NO_RET
3685# define PERL_STATIC_NO_RET STATIC
3686#endif
3687/* PERL_STATIC_NO_RET is supposed to be equivalent to PERL_STATIC_INLINE on
3688 builds that dont have a noreturn as a declaration specifier
3689*/
3690#ifndef PERL_STATIC_INLINE_NO_RET
3691# define PERL_STATIC_INLINE_NO_RET PERL_STATIC_INLINE
3692#endif
3693
e37778c2 3694#if !defined(OS2)
2c2d71f5
JH
3695# include "iperlsys.h"
3696#endif
504f80c1 3697
9c12f1e5 3698#ifdef __LIBCATAMOUNT__
00f254e2 3699#undef HAS_PASSWD /* unixish.h but not unixish enough. */
9c12f1e5
RGS
3700#undef HAS_GROUP
3701#define FAKE_BIT_BUCKET
3702#endif
3703
d10dc2ae 3704/* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0.
1a237f4f
YO
3705 * Note that the USE_HASH_SEED and similar defines are *NOT* defined by
3706 * Configure, despite their names being similar to other defines like
3707 * USE_ITHREADS. Configure in fact knows nothing about the randomised
3708 * hashes. Therefore to enable/disable the hash randomisation defines
3709 * use the Configure -Accflags=... instead. */
3710#if !defined(NO_HASH_SEED) && !defined(USE_HASH_SEED)
4546b9e6 3711# define USE_HASH_SEED
504f80c1
JH
3712#endif
3713
598921a7
NC
3714#include "perly.h"
3715
598921a7 3716
654eccd5
JD
3717/* macros to define bit-fields in structs. */
3718#ifndef PERL_BITFIELD8
3719# define PERL_BITFIELD8 unsigned
3720#endif
3721#ifndef PERL_BITFIELD16