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Document new {,s}printf() behavior
[perl5.git] / perl.h
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a0d0e21e 1/* perl.h
a687059c 2 *
9607fc9c 3 * Copyright (c) 1987-1997, Larry Wall
a687059c 4 *
352d5a3a
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
8d063cd8 7 *
8d063cd8 8 */
85e6fe83
LW		 9#ifndef H_PERL
10#define H_PERL 1
a0d0e21e 11#define OVERLOAD
8d063cd8 12
760ac839
LW		 13#ifdef PERL_FOR_X2P
14/*
15 * This file is being used for x2p stuff.
16 * Above symbol is defined via -D in 'x2p/Makefile.SH'
17 * Decouple x2p stuff from some of perls more extreme eccentricities.
18 */
760ac839 19#undef EMBED
55497cff 20#undef NO_EMBED
21#define NO_EMBED
22#undef MULTIPLICITY
760ac839
LW		 23#undef USE_STDIO
24#define USE_STDIO
25#endif /* PERL_FOR_X2P */
26
71be2cbc 27#define VOIDUSED 1
28#include "config.h"
29
30#include "embed.h"
31
728e2803 32/*
33 * STMT_START { statements; } STMT_END;
34 * can be used as a single statement, as in
35 * if (x) STMT_START { ... } STMT_END; else ...
36 *
37 * Trying to select a version that gives no warnings...
38 */
39#if !(defined(STMT_START) && defined(STMT_END))
169d69b2 40# if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(__cplusplus)
728e2803 41# define STMT_START (void)( /* gcc supports ``({ STATEMENTS; })'' */
42# define STMT_END )
43# else
44 /* Now which other defined()s do we need here ??? */
45# if (VOIDFLAGS) && (defined(sun) || defined(__sun__))
46# define STMT_START if (1)
47# define STMT_END else (void)0
48# else
49# define STMT_START do
50# define STMT_END while (0)
51# endif
52# endif
53#endif
54
55497cff 55/*
56 * SOFT_CAST can be used for args to prototyped functions to retain some
57 * type checking; it only casts if the compiler does not know prototypes.
58 */
59#if defined(CAN_PROTOTYPE) && defined(DEBUGGING_COMPILE)
60#define SOFT_CAST(type)
61#else
62#define SOFT_CAST(type) (type)
63#endif
64
79072805
LW		 65#ifndef BYTEORDER
66# define BYTEORDER 0x1234
67#endif
68
69/* Overall memory policy? */
70#ifndef CONSERVATIVE
71# define LIBERAL 1
72#endif
73
74/*
75 * The following contortions are brought to you on behalf of all the
76 * standards, semi-standards, de facto standards, not-so-de-facto standards
77 * of the world, as well as all the other botches anyone ever thought of.
78 * The basic theory is that if we work hard enough here, the rest of the
79 * code can be a lot prettier. Well, so much for theory. Sorry, Henry...
80 */
ac58e20f 81
ee0007ab 82/* define this once if either system, instead of cluttering up the src */
68dc0745 83#if defined(MSDOS) || defined(atarist) || defined(WIN32)
ee0007ab
LW		 84#define DOSISH 1
85#endif
86
a0d0e21e 87#if defined(__STDC__) || defined(vax11c) || defined(_AIX) || defined(__stdc__) || defined(__cplusplus)
352d5a3a
LW		 88# define STANDARD_C 1
89#endif
90
68dc0745 91#if defined(__cplusplus) || defined(WIN32)
92# define DONT_DECLARE_STD 1
93#endif
94
352d5a3a 95#if defined(HASVOLATILE) || defined(STANDARD_C)
79072805
LW		 96# ifdef __cplusplus
97# define VOL // to temporarily suppress warnings
98# else
99# define VOL volatile
100# endif
663a0e37 101#else
79072805 102# define VOL
663a0e37
LW		 103#endif
104
bbce6d69 105#define TAINT (tainted = TRUE)
106#define TAINT_NOT (tainted = FALSE)
107#define TAINT_IF(c) if (c) { tainted = TRUE; }
108#define TAINT_ENV() if (tainting) { taint_env(); }
109#define TAINT_PROPER(s) if (tainting) { taint_proper(no_security, s); }
a687059c 110
a6e633de 111/* XXX All process group stuff is handled in pp_sys.c. Should these
112 defines move there? If so, I could simplify this a lot. --AD 9/96.
113*/
114/* Process group stuff changed from traditional BSD to POSIX.
115 perlfunc.pod documents the traditional BSD-style syntax, so we'll
116 try to preserve that, if possible.
117*/
118#ifdef HAS_SETPGID
119# define BSD_SETPGRP(pid, pgrp) setpgid((pid), (pgrp))
c07a80fd 120#else
a6e633de 121# if defined(HAS_SETPGRP) && defined(USE_BSD_SETPGRP)
122# define BSD_SETPGRP(pid, pgrp) setpgrp((pid), (pgrp))
123# else
124# ifdef HAS_SETPGRP2 /* DG/UX */
125# define BSD_SETPGRP(pid, pgrp) setpgrp2((pid), (pgrp))
126# endif
127# endif
128#endif
129#if defined(BSD_SETPGRP) && !defined(HAS_SETPGRP)
130# define HAS_SETPGRP /* Well, effectively it does . . . */
131#endif
132
133/* getpgid isn't POSIX, but at least Solaris and Linux have it, and it makes
134 our life easier :-) so we'll try it.
135*/
136#ifdef HAS_GETPGID
137# define BSD_GETPGRP(pid) getpgid((pid))
138#else
139# if defined(HAS_GETPGRP) && defined(USE_BSD_GETPGRP)
140# define BSD_GETPGRP(pid) getpgrp((pid))
141# else
142# ifdef HAS_GETPGRP2 /* DG/UX */
143# define BSD_GETPGRP(pid) getpgrp2((pid))
144# endif
145# endif
146#endif
147#if defined(BSD_GETPGRP) && !defined(HAS_GETPGRP)
148# define HAS_GETPGRP /* Well, effectively it does . . . */
149#endif
150
151/* These are not exact synonyms, since setpgrp() and getpgrp() may
152 have different behaviors, but perl.h used to define USE_BSDPGRP
153 (prior to 5.003_05) so some extension might depend on it.
154*/
155#if defined(USE_BSD_SETPGRP) || defined(USE_BSD_GETPGRP)
156# ifndef USE_BSDPGRP
157# define USE_BSDPGRP
158# endif
663a0e37
LW		 159#endif
160
760ac839
LW		 161#ifndef _TYPES_ /* If types.h defines this it's easy. */
162# ifndef major /* Does everyone's types.h define this? */
163# include <sys/types.h>
164# endif
165#endif
166
167#ifdef __cplusplus
168# ifndef I_STDARG
169# define I_STDARG 1
170# endif
171#endif
172
173#ifdef I_STDARG
174# include <stdarg.h>
175#else
176# ifdef I_VARARGS
177# include <varargs.h>
178# endif
179#endif
180
181#include "perlio.h"
0c30d9ec 182
4633a7c4 183#ifdef USE_NEXT_CTYPE
0c30d9ec 184
185#if NX_CURRENT_COMPILER_RELEASE >= 400
186#include <objc/NXCType.h>
187#else /* NX_CURRENT_COMPILER_RELEASE < 400 */
a0d0e21e 188#include <appkit/NXCType.h>
0c30d9ec 189#endif /* NX_CURRENT_COMPILER_RELEASE >= 400 */
190
191#else /* !USE_NEXT_CTYPE */
fe14fcc3 192#include <ctype.h>
0c30d9ec 193#endif /* USE_NEXT_CTYPE */
a0d0e21e
LW		 194
195#ifdef METHOD /* Defined by OSF/1 v3.0 by ctype.h */
196#undef METHOD
197#endif
198
36477c24 199#ifdef I_LOCALE
200# include <locale.h>
201#endif
202
203#if !defined(NO_LOCALE) && defined(HAS_SETLOCALE)
204# define USE_LOCALE
205# if !defined(NO_LOCALE_COLLATE) && defined(LC_COLLATE) \
206 && defined(HAS_STRXFRM)
207# define USE_LOCALE_COLLATE
208# endif
209# if !defined(NO_LOCALE_CTYPE) && defined(LC_CTYPE)
210# define USE_LOCALE_CTYPE
211# endif
212# if !defined(NO_LOCALE_NUMERIC) && defined(LC_NUMERIC)
213# define USE_LOCALE_NUMERIC
214# endif
215#endif /* !NO_LOCALE && HAS_SETLOCALE */
216
fe14fcc3 217#include <setjmp.h>
79072805 218
a0d0e21e 219#ifdef I_SYS_PARAM
79072805
LW		 220# ifdef PARAM_NEEDS_TYPES
221# include <sys/types.h>
222# endif
223# include <sys/param.h>
352d5a3a 224#endif
79072805
LW		 225
226
227/* Use all the "standard" definitions? */
a0d0e21e 228#if defined(STANDARD_C) && defined(I_STDLIB)
79072805 229# include <stdlib.h>
ff68c719 230#endif
03a14243 231
55497cff 232/* This comes after <stdlib.h> so we don't try to change the standard
233 * library prototypes; we'll use our own in proto.h instead. */
234
4633a7c4 235#ifdef MYMALLOC
55497cff 236
760ac839 237# ifdef HIDEMYMALLOC
55497cff 238# define malloc Mymalloc
239# define calloc Mycalloc
05effc97 240# define realloc Myremalloc
55497cff 241# define free Myfree
242# endif
243# ifdef EMBEDMYMALLOC
244# define malloc Perl_malloc
245# define calloc Perl_calloc
246# define realloc Perl_realloc
247# define free Perl_free
4633a7c4 248# endif
55497cff 249
250# undef safemalloc
251# undef safecalloc
252# undef saferealloc
253# undef safefree
254# define safemalloc malloc
255# define safecalloc calloc
4633a7c4 256# define saferealloc realloc
55497cff 257# define safefree free
258
259#endif /* MYMALLOC */
4633a7c4 260
a0d0e21e
LW		 261#define MEM_SIZE Size_t
262
ff68c719 263#if defined(STANDARD_C) && defined(I_STDDEF)
264# include <stddef.h>
71be2cbc 265# define STRUCT_OFFSET(s,m) offsetof(s,m)
ff68c719 266#else
71be2cbc 267# define STRUCT_OFFSET(s,m) (Size_t)(&(((s *)0)->m))
ff68c719 268#endif
269
a0d0e21e
LW		 270#if defined(I_STRING) || defined(__cplusplus)
271# include <string.h>
272#else
273# include <strings.h>
274#endif
275
276#if !defined(HAS_STRCHR) && defined(HAS_INDEX) && !defined(strchr)
277#define strchr index
278#define strrchr rindex
279#endif
280
16d20bd9
AD		 281#ifdef I_MEMORY
282# include <memory.h>
283#endif
284
fe14fcc3 285#ifdef HAS_MEMCPY
85e6fe83 286# if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
fe14fcc3 287# ifndef memcpy
a0d0e21e 288 extern char * memcpy _((char*, char*, int));
ee0007ab
LW		 289# endif
290# endif
291#else
292# ifndef memcpy
293# ifdef HAS_BCOPY
294# define memcpy(d,s,l) bcopy(s,d,l)
295# else
296# define memcpy(d,s,l) my_bcopy(s,d,l)
297# endif
298# endif
299#endif /* HAS_MEMCPY */
fe14fcc3 300
ee0007ab 301#ifdef HAS_MEMSET
85e6fe83 302# if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
ee0007ab 303# ifndef memset
a0d0e21e 304 extern char *memset _((char*, int, int));
ee0007ab
LW		 305# endif
306# endif
307# define memzero(d,l) memset(d,0,l)
308#else
309# ifndef memzero
310# ifdef HAS_BZERO
311# define memzero(d,l) bzero(d,l)
312# else
313# define memzero(d,l) my_bzero(d,l)
314# endif
352d5a3a 315# endif
ee0007ab
LW		 316#endif /* HAS_MEMSET */
317
85e6fe83 318#if !defined(HAS_MEMMOVE) && !defined(memmove)
2304df62 319# if defined(HAS_BCOPY) && defined(HAS_SAFE_BCOPY)
79072805
LW		 320# define memmove(d,s,l) bcopy(s,d,l)
321# else
2304df62 322# if defined(HAS_MEMCPY) && defined(HAS_SAFE_MEMCPY)
79072805
LW		 323# define memmove(d,s,l) memcpy(d,s,l)
324# else
325# define memmove(d,s,l) my_bcopy(s,d,l)
326# endif
327# endif
d9d8d8de 328#endif
378cc40b 329
36477c24 330#if defined(mips) && defined(ultrix) && !defined(__STDC__)
331# undef HAS_MEMCMP
332#endif
333
334#if defined(HAS_MEMCMP) && defined(HAS_SANE_MEMCMP)
335# if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
336# ifndef memcmp
337 extern int memcmp _((char*, char*, int));
338# endif
339# endif
340# ifdef BUGGY_MSC
341 # pragma function(memcmp)
342# endif
343#else
344# ifndef memcmp
345# define memcmp my_memcmp
346# endif
347#endif /* HAS_MEMCMP && HAS_SANE_MEMCMP */
348
349#ifndef HAS_BCMP
350# ifndef bcmp
351# define bcmp(s1,s2,l) memcmp(s1,s2,l)
352# endif
353#endif /* !HAS_BCMP */
354
ae986130 355#ifdef I_NETINET_IN
79072805 356# include <netinet/in.h>
ae986130
LW		 357#endif
358
1aef975c 359#ifdef I_SYS_STAT
8d063cd8 360#include <sys/stat.h>
1aef975c 361#endif
79072805 362
a0d0e21e
LW		 363/* The stat macros for Amdahl UTS, Unisoft System V/88 (and derivatives
364 like UTekV) are broken, sometimes giving false positives. Undefine
365 them here and let the code below set them to proper values.
366
367 The ghs macro stands for GreenHills Software C-1.8.5 which
368 is the C compiler for sysV88 and the various derivatives.
369 This header file bug is corrected in gcc-2.5.8 and later versions.
370 --Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94. */
371
372#if defined(uts) || (defined(m88k) && defined(ghs))
79072805
LW		 373# undef S_ISDIR
374# undef S_ISCHR
375# undef S_ISBLK
376# undef S_ISREG
377# undef S_ISFIFO
378# undef S_ISLNK
ee0007ab 379#endif
135863df 380
663a0e37
LW		 381#ifdef I_TIME
382# include <time.h>
ffed7fef 383#endif
663a0e37 384
fe14fcc3 385#ifdef I_SYS_TIME
85e6fe83 386# ifdef I_SYS_TIME_KERNEL
663a0e37
LW		 387# define KERNEL
388# endif
389# include <sys/time.h>
85e6fe83 390# ifdef I_SYS_TIME_KERNEL
663a0e37
LW		 391# undef KERNEL
392# endif
a687059c 393#endif
135863df 394
55497cff 395#if defined(HAS_TIMES) && defined(I_SYS_TIMES)
85e6fe83 396# include <sys/times.h>
d9d8d8de 397#endif
8d063cd8 398
fe14fcc3 399#if defined(HAS_STRERROR) && (!defined(HAS_MKDIR) || !defined(HAS_RMDIR))
79072805 400# undef HAS_STRERROR
663a0e37
LW		 401#endif
402
a0d0e21e
LW		 403#ifndef HAS_MKFIFO
404# ifndef mkfifo
405# define mkfifo(path, mode) (mknod((path), (mode) | S_IFIFO, 0))
406# endif
407#endif /* !HAS_MKFIFO */
408
663a0e37 409#include <errno.h>
ed6116ce 410#ifdef HAS_SOCKET
85e6fe83 411# ifdef I_NET_ERRNO
ed6116ce
LW		 412# include <net/errno.h>
413# endif
414#endif
f86702cc 415
416#ifdef VMS
417# define SETERRNO(errcode,vmserrcode) \
418 STMT_START { \
419 set_errno(errcode); \
420 set_vaxc_errno(vmserrcode); \
421 } STMT_END
748a9306 422#else
f86702cc 423# define SETERRNO(errcode,vmserrcode) errno = (errcode)
748a9306 424#endif
ed6116ce 425
55497cff 426#ifndef errno
79072805 427 extern int errno; /* ANSI allows errno to be an lvalue expr */
d9d8d8de 428#endif
663a0e37 429
2304df62 430#ifdef HAS_STRERROR
a0d0e21e
LW		 431# ifdef VMS
432 char *strerror _((int,...));
433# else
68dc0745 434#ifndef DONT_DECLARE_STD
a0d0e21e 435 char *strerror _((int));
68dc0745 436#endif
a0d0e21e 437# endif
2304df62
AD		 438# ifndef Strerror
439# define Strerror strerror
440# endif
441#else
442# ifdef HAS_SYS_ERRLIST
79072805
LW		 443 extern int sys_nerr;
444 extern char *sys_errlist[];
2304df62
AD		 445# ifndef Strerror
446# define Strerror(e) \
79072805 447 ((e) < 0 || (e) >= sys_nerr ? "(unknown)" : sys_errlist[e])
2304df62 448# endif
79072805 449# endif
35c8bce7 450#endif
663a0e37 451
2304df62 452#ifdef I_SYS_IOCTL
79072805
LW		 453# ifndef _IOCTL_
454# include <sys/ioctl.h>
455# endif
a687059c
LW		 456#endif
457
ee0007ab 458#if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
79072805
LW		 459# ifdef HAS_SOCKETPAIR
460# undef HAS_SOCKETPAIR
461# endif
2304df62
AD		 462# ifdef I_NDBM
463# undef I_NDBM
79072805 464# endif
a687059c
LW		 465#endif
466
a687059c 467#if INTSIZE == 2
79072805
LW		 468# define htoni htons
469# define ntohi ntohs
a687059c 470#else
79072805
LW		 471# define htoni htonl
472# define ntohi ntohl
a687059c
LW		 473#endif
474
a0d0e21e 475/* Configure already sets Direntry_t */
35c8bce7 476#if defined(I_DIRENT)
663a0e37 477# include <dirent.h>
a0d0e21e
LW		 478# if defined(NeXT) && defined(I_SYS_DIR) /* NeXT needs dirent + sys/dir.h */
479# include <sys/dir.h>
480# endif
ae986130 481#else
fe14fcc3 482# ifdef I_SYS_NDIR
79a0689e 483# include <sys/ndir.h>
663a0e37 484# else
fe14fcc3 485# ifdef I_SYS_DIR
79a0689e
LW		 486# ifdef hp9000s500
487# include <ndir.h> /* may be wrong in the future */
488# else
489# include <sys/dir.h>
490# endif
663a0e37
LW		 491# endif
492# endif
4633a7c4 493#endif
a687059c 494
352d5a3a
LW		 495#ifdef FPUTS_BOTCH
496/* work around botch in SunOS 4.0.1 and 4.0.2 */
497# ifndef fputs
79072805 498# define fputs(sv,fp) fprintf(fp,"%s",sv)
352d5a3a
LW		 499# endif
500#endif
501
c623bd54
LW		 502/*
503 * The following gobbledygook brought to you on behalf of __STDC__.
504 * (I could just use #ifndef __STDC__, but this is more bulletproof
505 * in the face of half-implementations.)
506 */
507
508#ifndef S_IFMT
509# ifdef _S_IFMT
510# define S_IFMT _S_IFMT
511# else
512# define S_IFMT 0170000
513# endif
514#endif
515
516#ifndef S_ISDIR
517# define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
518#endif
519
520#ifndef S_ISCHR
521# define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
522#endif
523
524#ifndef S_ISBLK
fe14fcc3
LW		 525# ifdef S_IFBLK
526# define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
527# else
528# define S_ISBLK(m) (0)
529# endif
c623bd54
LW		 530#endif
531
532#ifndef S_ISREG
533# define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
534#endif
535
536#ifndef S_ISFIFO
fe14fcc3
LW		 537# ifdef S_IFIFO
538# define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
539# else
540# define S_ISFIFO(m) (0)
541# endif
c623bd54
LW		 542#endif
543
544#ifndef S_ISLNK
545# ifdef _S_ISLNK
546# define S_ISLNK(m) _S_ISLNK(m)
547# else
548# ifdef _S_IFLNK
549# define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
550# else
551# ifdef S_IFLNK
552# define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
553# else
554# define S_ISLNK(m) (0)
555# endif
556# endif
557# endif
558#endif
559
560#ifndef S_ISSOCK
561# ifdef _S_ISSOCK
562# define S_ISSOCK(m) _S_ISSOCK(m)
563# else
564# ifdef _S_IFSOCK
565# define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
566# else
567# ifdef S_IFSOCK
568# define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
569# else
570# define S_ISSOCK(m) (0)
571# endif
572# endif
573# endif
574#endif
575
576#ifndef S_IRUSR
577# ifdef S_IREAD
578# define S_IRUSR S_IREAD
579# define S_IWUSR S_IWRITE
580# define S_IXUSR S_IEXEC
581# else
582# define S_IRUSR 0400
583# define S_IWUSR 0200
584# define S_IXUSR 0100
585# endif
586# define S_IRGRP (S_IRUSR>>3)
587# define S_IWGRP (S_IWUSR>>3)
588# define S_IXGRP (S_IXUSR>>3)
589# define S_IROTH (S_IRUSR>>6)
590# define S_IWOTH (S_IWUSR>>6)
591# define S_IXOTH (S_IXUSR>>6)
592#endif
593
594#ifndef S_ISUID
595# define S_ISUID 04000
596#endif
597
598#ifndef S_ISGID
599# define S_ISGID 02000
600#endif
601
79072805
LW		 602#ifdef ff_next
603# undef ff_next
352d5a3a
LW		 604#endif
605
a0d0e21e 606#if defined(cray) || defined(gould) || defined(i860) || defined(pyr)
45d8adaa
LW		 607# define SLOPPYDIVIDE
608#endif
609
748a9306
LW		 610#ifdef UV
611#undef UV
612#endif
613
27d4fb96 614/* XXX QUAD stuff is not currently supported on most systems.
615 Specifically, perl internals don't support long long. Among
616 the many problems is that some compilers support long long,
617 but the underlying library functions (such as sprintf) don't.
618 Some things do work (such as quad pack/unpack on convex);
619 also some systems use long long for the fpos_t typedef. That
620 seems to work too.
621
622 The IV type is supposed to be long enough to hold any integral
623 value or a pointer.
624 --Andy Dougherty August 1996
625*/
626
f86702cc 627#ifdef cray
628# define Quad_t int
629#else
630# ifdef convex
631# define Quad_t long long
45d8adaa 632# else
ff0cee69 633# if BYTEORDER > 0xFFFF
634# define Quad_t long
45d8adaa
LW		 635# endif
636# endif
f86702cc 637#endif
638
639#ifdef Quad_t
640# define HAS_QUAD
748a9306
LW		 641 typedef Quad_t IV;
642 typedef unsigned Quad_t UV;
27d4fb96 643# define IV_MAX PERL_QUAD_MAX
644# define IV_MIN PERL_QUAD_MIN
645# define UV_MAX PERL_UQUAD_MAX
646# define UV_MIN PERL_UQUAD_MIN
79072805 647#else
748a9306
LW		 648 typedef long IV;
649 typedef unsigned long UV;
27d4fb96 650# define IV_MAX PERL_LONG_MAX
651# define IV_MIN PERL_LONG_MIN
652# define UV_MAX PERL_ULONG_MAX
653# define UV_MIN PERL_ULONG_MIN
79072805
LW		 654#endif
655
760ac839
LW		 656/* Previously these definitions used hardcoded figures.
657 * It is hoped these formula are more portable, although
658 * no data one way or another is presently known to me.
659 * The "PERL_" names are used because these calculated constants
660 * do not meet the ANSI requirements for LONG_MAX, etc., which
661 * need to be constants acceptable to #if - kja
662 * define PERL_LONG_MAX 2147483647L
663 * define PERL_LONG_MIN (-LONG_MAX - 1)
664 * define PERL ULONG_MAX 4294967295L
665 */
666
667#ifdef I_LIMITS /* Needed for cast_xxx() functions below. */
668# include <limits.h>
669#else
670#ifdef I_VALUES
671# include <values.h>
672#endif
673#endif
674
99abf803 675/*
676 * Try to figure out max and min values for the integral types. THE CORRECT
677 * SOLUTION TO THIS MESS: ADAPT enquire.c FROM GCC INTO CONFIGURE. The
678 * following hacks are used if neither limits.h or values.h provide them:
679 * U<TYPE>_MAX: for types >= int: ~(unsigned TYPE)0
680 * for types < int: (unsigned TYPE)~(unsigned)0
681 * The argument to ~ must be unsigned so that later signed->unsigned
682 * conversion can't modify the value's bit pattern (e.g. -0 -> +0),
683 * and it must not be smaller than int because ~ does integral promotion.
684 * <type>_MAX: (<type>) (U<type>_MAX >> 1)
685 * <type>_MIN: -<type>_MAX - <is_twos_complement_architecture: (3 & -1) == 3>.
686 * The latter is a hack which happens to work on some machines but
687 * does *not* catch any random system, or things like integer types
688 * with NaN if that is possible.
689 *
690 * All of the types are explicitly cast to prevent accidental loss of
691 * numeric range, and in the hope that they will be less likely to confuse
692 * over-eager optimizers.
693 *
694 */
27d4fb96 695
99abf803 696#define PERL_UCHAR_MIN ((unsigned char)0)
697
698#ifdef UCHAR_MAX
699# define PERL_UCHAR_MAX ((unsigned char)UCHAR_MAX)
27d4fb96 700#else
99abf803 701# ifdef MAXUCHAR
702# define PERL_UCHAR_MAX ((unsigned char)MAXUCHAR)
27d4fb96 703# else
99abf803 704# define PERL_UCHAR_MAX ((unsigned char)~(unsigned)0)
27d4fb96 705# endif
706#endif
99abf803 707
708/*
709 * CHAR_MIN and CHAR_MAX are not included here, as the (char) type may be
710 * ambiguous. It may be equivalent to (signed char) or (unsigned char)
711 * depending on local options. Until Configure detects this (or at least
712 * detects whether the "signed" keyword is available) the CHAR ranges
713 * will not be included. UCHAR functions normally.
714 * - kja
715 */
27d4fb96 716
99abf803 717#define PERL_USHORT_MIN ((unsigned short)0)
718
719#ifdef USHORT_MAX
720# define PERL_USHORT_MAX ((unsigned short)USHORT_MAX)
27d4fb96 721#else
99abf803 722# ifdef MAXUSHORT
723# define PERL_USHORT_MAX ((unsigned short)MAXUSHORT)
27d4fb96 724# else
99abf803 725# define PERL_USHORT_MAX ((unsigned short)~(unsigned)0)
27d4fb96 726# endif
727#endif
728
27d4fb96 729#ifdef SHORT_MAX
99abf803 730# define PERL_SHORT_MAX ((short)SHORT_MAX)
27d4fb96 731#else
732# ifdef MAXSHORT /* Often used in <values.h> */
99abf803 733# define PERL_SHORT_MAX ((short)MAXSHORT)
27d4fb96 734# else
99abf803 735# define PERL_SHORT_MAX ((short) (PERL_USHORT_MAX >> 1))
27d4fb96 736# endif
737#endif
738
739#ifdef SHORT_MIN
99abf803 740# define PERL_SHORT_MIN ((short)SHORT_MIN)
27d4fb96 741#else
742# ifdef MINSHORT
99abf803 743# define PERL_SHORT_MIN ((short)MINSHORT)
27d4fb96 744# else
745# define PERL_SHORT_MIN (-PERL_SHORT_MAX - ((3 & -1) == 3))
746# endif
747#endif
748
99abf803 749#ifdef UINT_MAX
750# define PERL_UINT_MAX ((unsigned int)UINT_MAX)
27d4fb96 751#else
99abf803 752# ifdef MAXUINT
753# define PERL_UINT_MAX ((unsigned int)MAXUINT)
27d4fb96 754# else
99abf803 755# define PERL_UINT_MAX (~(unsigned int)0)
27d4fb96 756# endif
757#endif
758
99abf803 759#define PERL_UINT_MIN ((unsigned int)0)
27d4fb96 760
761#ifdef INT_MAX
99abf803 762# define PERL_INT_MAX ((int)INT_MAX)
27d4fb96 763#else
764# ifdef MAXINT /* Often used in <values.h> */
99abf803 765# define PERL_INT_MAX ((int)MAXINT)
27d4fb96 766# else
99abf803 767# define PERL_INT_MAX ((int)(PERL_UINT_MAX >> 1))
27d4fb96 768# endif
769#endif
770
771#ifdef INT_MIN
99abf803 772# define PERL_INT_MIN ((int)INT_MIN)
27d4fb96 773#else
774# ifdef MININT
99abf803 775# define PERL_INT_MIN ((int)MININT)
27d4fb96 776# else
777# define PERL_INT_MIN (-PERL_INT_MAX - ((3 & -1) == 3))
778# endif
779#endif
780
99abf803 781#ifdef ULONG_MAX
782# define PERL_ULONG_MAX ((unsigned long)ULONG_MAX)
27d4fb96 783#else
99abf803 784# ifdef MAXULONG
785# define PERL_ULONG_MAX ((unsigned long)MAXULONG)
27d4fb96 786# else
99abf803 787# define PERL_ULONG_MAX (~(unsigned long)0)
27d4fb96 788# endif
789#endif
790
99abf803 791#define PERL_ULONG_MIN ((unsigned long)0L)
27d4fb96 792
760ac839 793#ifdef LONG_MAX
99abf803 794# define PERL_LONG_MAX ((long)LONG_MAX)
760ac839
LW		 795#else
796# ifdef MAXLONG /* Often used in <values.h> */
99abf803 797# define PERL_LONG_MAX ((long)MAXLONG)
760ac839 798# else
99abf803 799# define PERL_LONG_MAX ((long) (PERL_ULONG_MAX >> 1))
760ac839
LW		 800# endif
801#endif
802
803#ifdef LONG_MIN
99abf803 804# define PERL_LONG_MIN ((long)LONG_MIN)
760ac839
LW		 805#else
806# ifdef MINLONG
99abf803 807# define PERL_LONG_MIN ((long)MINLONG)
760ac839 808# else
27d4fb96 809# define PERL_LONG_MIN (-PERL_LONG_MAX - ((3 & -1) == 3))
760ac839
LW		 810# endif
811#endif
812
99abf803 813#ifdef HAS_QUAD
814
815# ifdef UQUAD_MAX
816# define PERL_UQUAD_MAX ((UV)UQUAD_MAX)
760ac839 817# else
99abf803 818# define PERL_UQUAD_MAX (~(UV)0)
760ac839 819# endif
760ac839 820
99abf803 821# define PERL_UQUAD_MIN ((UV)0)
27d4fb96 822
27d4fb96 823# ifdef QUAD_MAX
99abf803 824# define PERL_QUAD_MAX ((IV)QUAD_MAX)
27d4fb96 825# else
99abf803 826# define PERL_QUAD_MAX ((IV) (PERL_UQUAD_MAX >> 1))
27d4fb96 827# endif
828
829# ifdef QUAD_MIN
99abf803 830# define PERL_QUAD_MIN ((IV)QUAD_MIN)
27d4fb96 831# else
a6e633de 832# define PERL_QUAD_MIN (-PERL_QUAD_MAX - ((3 & -1) == 3))
27d4fb96 833# endif
834
760ac839
LW		 835#endif
836
ee0007ab 837typedef MEM_SIZE STRLEN;
450a55e4 838
79072805
LW		 839typedef struct op OP;
840typedef struct cop COP;
841typedef struct unop UNOP;
842typedef struct binop BINOP;
843typedef struct listop LISTOP;
844typedef struct logop LOGOP;
845typedef struct condop CONDOP;
846typedef struct pmop PMOP;
847typedef struct svop SVOP;
848typedef struct gvop GVOP;
849typedef struct pvop PVOP;
79072805
LW		 850typedef struct loop LOOP;
851
852typedef struct Outrec Outrec;
93a17b20 853typedef struct interpreter PerlInterpreter;
79072805 854typedef struct ff FF;
79072805
LW		 855typedef struct sv SV;
856typedef struct av AV;
857typedef struct hv HV;
858typedef struct cv CV;
378cc40b 859typedef struct regexp REGEXP;
79072805 860typedef struct gp GP;
0c30d9ec 861typedef struct gv GV;
8990e307 862typedef struct io IO;
79072805
LW		 863typedef struct context CONTEXT;
864typedef struct block BLOCK;
865
866typedef struct magic MAGIC;
ed6116ce 867typedef struct xrv XRV;
79072805
LW		 868typedef struct xpv XPV;
869typedef struct xpviv XPVIV;
ff68c719 870typedef struct xpvuv XPVUV;
79072805
LW		 871typedef struct xpvnv XPVNV;
872typedef struct xpvmg XPVMG;
873typedef struct xpvlv XPVLV;
874typedef struct xpvav XPVAV;
875typedef struct xpvhv XPVHV;
876typedef struct xpvgv XPVGV;
877typedef struct xpvcv XPVCV;
878typedef struct xpvbm XPVBM;
879typedef struct xpvfm XPVFM;
8990e307 880typedef struct xpvio XPVIO;
79072805
LW		 881typedef struct mgvtbl MGVTBL;
882typedef union any ANY;
8d063cd8 883
378cc40b 884#include "handy.h"
a0d0e21e 885
16d20bd9
AD		 886typedef I32 (*filter_t) _((int, SV *, int));
887#define FILTER_READ(idx, sv, len) filter_read(idx, sv, len)
888#define FILTER_DATA(idx) (AvARRAY(rsfp_filters)[idx])
889#define FILTER_ISREADER(idx) (idx >= AvFILL(rsfp_filters))
890
748a9306 891#ifdef DOSISH
4633a7c4
LW		 892# if defined(OS2)
893# include "os2ish.h"
894# else
748a9306 895# include "dosish.h"
4633a7c4 896# endif
a0d0e21e 897#else
748a9306
LW		 898# if defined(VMS)
899# include "vmsish.h"
900# else
0c30d9ec 901# if defined(PLAN9)
902# include "./plan9/plan9ish.h"
903# else
904# include "unixish.h"
905# endif
748a9306
LW		 906# endif
907#endif
3fc1aec6 908
68dc0745 909#ifdef VMS
910# define STATUS_NATIVE statusvalue_vms
911# define STATUS_NATIVE_EXPORT \
912 ((I32)statusvalue_vms == -1 ? 44 : statusvalue_vms)
913# define STATUS_NATIVE_SET(n) \
914 STMT_START { \
915 statusvalue_vms = (n); \
916 if ((I32)statusvalue_vms == -1) \
917 statusvalue = -1; \
918 else if (statusvalue_vms & STS$M_SUCCESS) \
919 statusvalue = 0; \
920 else if ((statusvalue_vms & STS$M_SEVERITY) == 0) \
921 statusvalue = 1 << 8; \
922 else \
923 statusvalue = (statusvalue_vms & STS$M_SEVERITY) << 8; \
924 } STMT_END
925# define STATUS_POSIX statusvalue
926# ifdef VMSISH_STATUS
927# define STATUS_CURRENT (VMSISH_STATUS ? STATUS_NATIVE : STATUS_POSIX)
928# else
929# define STATUS_CURRENT STATUS_POSIX
930# endif
931# define STATUS_POSIX_SET(n) \
932 STMT_START { \
933 statusvalue = (n); \
934 if (statusvalue != -1) { \
935 statusvalue &= 0xFFFF; \
936 statusvalue_vms = statusvalue ? 44 : 1; \
937 } \
938 else statusvalue_vms = -1; \
939 } STMT_END
940# define STATUS_ALL_SUCCESS (statusvalue = 0, statusvalue_vms = 1)
941# define STATUS_ALL_FAILURE (statusvalue = 1, statusvalue_vms = 44)
942#else
943# define STATUS_NATIVE STATUS_POSIX
944# define STATUS_NATIVE_EXPORT STATUS_POSIX
945# define STATUS_NATIVE_SET STATUS_POSIX_SET
946# define STATUS_POSIX statusvalue
947# define STATUS_POSIX_SET(n) \
948 STMT_START { \
949 statusvalue = (n); \
950 if (statusvalue != -1) \
951 statusvalue &= 0xFFFF; \
952 } STMT_END
953# define STATUS_CURRENT STATUS_POSIX
954# define STATUS_ALL_SUCCESS (statusvalue = 0)
955# define STATUS_ALL_FAILURE (statusvalue = 1)
956#endif
957
3fc1aec6 958/* Some unistd.h's give a prototype for pause() even though
959 HAS_PAUSE ends up undefined. This causes the #define
960 below to be rejected by the compmiler. Sigh.
961*/
962#ifdef HAS_PAUSE
963#define Pause pause
964#else
965#define Pause() sleep((32767<<16)+32767)
748a9306
LW		 966#endif
967
968#ifndef IOCPARM_LEN
969# ifdef IOCPARM_MASK
970 /* on BSDish systes we're safe */
971# define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
972# else
973 /* otherwise guess at what's safe */
974# define IOCPARM_LEN(x) 256
975# endif
a0d0e21e
LW		 976#endif
977
79072805
LW		 978union any {
979 void* any_ptr;
980 I32 any_i32;
a0d0e21e 981 IV any_iv;
85e6fe83 982 long any_long;
a0d0e21e 983 void (*any_dptr) _((void*));
79072805
LW		 984};
985
5aabfad6 986/* Work around some cygwin32 problems with importing global symbols */
987#if defined(CYGWIN32) && defined(DLLIMPORT)
988# include "cw32imp.h"
989#endif
990
378cc40b 991#include "regexp.h"
79072805 992#include "sv.h"
378cc40b 993#include "util.h"
8d063cd8 994#include "form.h"
79072805
LW		 995#include "gv.h"
996#include "cv.h"
997#include "opcode.h"
998#include "op.h"
999#include "cop.h"
1000#include "av.h"
1001#include "hv.h"
1002#include "mg.h"
1003#include "scope.h"
8d063cd8 1004
4633a7c4
LW		 1005/* work around some libPW problems */
1006#ifdef DOINIT
1007EXT char Error[1];
1008#endif
1009
450a55e4 1010#if defined(iAPX286) || defined(M_I286) || defined(I80286)
a687059c
LW		 1011# define I286
1012#endif
1013
fe14fcc3
LW		 1014#if defined(htonl) && !defined(HAS_HTONL)
1015#define HAS_HTONL
ae986130 1016#endif
fe14fcc3
LW		 1017#if defined(htons) && !defined(HAS_HTONS)
1018#define HAS_HTONS
ae986130 1019#endif
fe14fcc3
LW		 1020#if defined(ntohl) && !defined(HAS_NTOHL)
1021#define HAS_NTOHL
ae986130 1022#endif
fe14fcc3
LW		 1023#if defined(ntohs) && !defined(HAS_NTOHS)
1024#define HAS_NTOHS
ae986130 1025#endif
fe14fcc3 1026#ifndef HAS_HTONL
d9d8d8de 1027#if (BYTEORDER & 0xffff) != 0x4321
fe14fcc3
LW		 1028#define HAS_HTONS
1029#define HAS_HTONL
1030#define HAS_NTOHS
1031#define HAS_NTOHL
a687059c
LW		 1032#define MYSWAP
1033#define htons my_swap
1034#define htonl my_htonl
1035#define ntohs my_swap
1036#define ntohl my_ntohl
1037#endif
1038#else
d9d8d8de 1039#if (BYTEORDER & 0xffff) == 0x4321
fe14fcc3
LW		 1040#undef HAS_HTONS
1041#undef HAS_HTONL
1042#undef HAS_NTOHS
1043#undef HAS_NTOHL
a687059c
LW		 1044#endif
1045#endif
1046
988174c1
LW		 1047/*
1048 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1049 * -DWS
1050 */
1051#if BYTEORDER != 0x1234
1052# define HAS_VTOHL
1053# define HAS_VTOHS
1054# define HAS_HTOVL
1055# define HAS_HTOVS
1056# if BYTEORDER == 0x4321
1057# define vtohl(x) ((((x)&0xFF)<<24) \
1058 +(((x)>>24)&0xFF) \
1059 +(((x)&0x0000FF00)<<8) \
1060 +(((x)&0x00FF0000)>>8) )
1061# define vtohs(x) ((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
1062# define htovl(x) vtohl(x)
1063# define htovs(x) vtohs(x)
1064# endif
1065 /* otherwise default to functions in util.c */
1066#endif
1067
0f85fab0 1068#ifdef CASTNEGFLOAT
79072805 1069#define U_S(what) ((U16)(what))
0f85fab0 1070#define U_I(what) ((unsigned int)(what))
79072805 1071#define U_L(what) ((U32)(what))
0f85fab0 1072#else
a6e633de 1073# ifdef __cplusplus
1074 extern "C" {
1075# endif
a0d0e21e 1076U32 cast_ulong _((double));
a6e633de 1077# ifdef __cplusplus
1078 }
1079# endif
232e078e
AD		 1080#define U_S(what) ((U16)cast_ulong((double)(what)))
1081#define U_I(what) ((unsigned int)cast_ulong((double)(what)))
1082#define U_L(what) (cast_ulong((double)(what)))
ee0007ab
LW		 1083#endif
1084
ed6116ce
LW		 1085#ifdef CASTI32
1086#define I_32(what) ((I32)(what))
a0d0e21e 1087#define I_V(what) ((IV)(what))
5d94fbed 1088#define U_V(what) ((UV)(what))
ed6116ce 1089#else
a6e633de 1090# ifdef __cplusplus
1091 extern "C" {
1092# endif
a0d0e21e 1093I32 cast_i32 _((double));
a0d0e21e 1094IV cast_iv _((double));
5d94fbed 1095UV cast_uv _((double));
a6e633de 1096# ifdef __cplusplus
1097 }
1098# endif
1099#define I_32(what) (cast_i32((double)(what)))
1100#define I_V(what) (cast_iv((double)(what)))
5d94fbed 1101#define U_V(what) (cast_uv((double)(what)))
ed6116ce
LW		 1102#endif
1103
79072805
LW		 1104struct Outrec {
1105 I32 o_lines;
d9d8d8de 1106 char *o_str;
79072805 1107 U32 o_len;
8d063cd8
LW		 1108};
1109
352d5a3a
LW		 1110#ifndef MAXSYSFD
1111# define MAXSYSFD 2
1112#endif
ee0007ab 1113
f82b3d41 1114#ifndef TMPPATH
1115# define TMPPATH "/tmp/perl-eXXXXXX"
a0d0e21e 1116#endif
79072805
LW		 1117
1118#ifndef __cplusplus
a0d0e21e
LW		 1119Uid_t getuid _((void));
1120Uid_t geteuid _((void));
1121Gid_t getgid _((void));
1122Gid_t getegid _((void));
79072805 1123#endif
8d063cd8
LW		 1124
1125#ifdef DEBUGGING
0c30d9ec 1126#ifndef Perl_debug_log
760ac839 1127#define Perl_debug_log PerlIO_stderr()
0c30d9ec 1128#endif
d96024cf 1129#define YYDEBUG 1
79072805
LW		 1130#define DEB(a) a
1131#define DEBUG(a) if (debug) a
1132#define DEBUG_p(a) if (debug & 1) a
1133#define DEBUG_s(a) if (debug & 2) a
1134#define DEBUG_l(a) if (debug & 4) a
1135#define DEBUG_t(a) if (debug & 8) a
1136#define DEBUG_o(a) if (debug & 16) a
1137#define DEBUG_c(a) if (debug & 32) a
1138#define DEBUG_P(a) if (debug & 64) a
0c30d9ec 1139#define DEBUG_m(a) if (curinterp && debug & 128) a
79072805
LW		 1140#define DEBUG_f(a) if (debug & 256) a
1141#define DEBUG_r(a) if (debug & 512) a
1142#define DEBUG_x(a) if (debug & 1024) a
1143#define DEBUG_u(a) if (debug & 2048) a
1144#define DEBUG_L(a) if (debug & 4096) a
1145#define DEBUG_H(a) if (debug & 8192) a
1146#define DEBUG_X(a) if (debug & 16384) a
8990e307 1147#define DEBUG_D(a) if (debug & 32768) a
79072805
LW		 1148#else
1149#define DEB(a)
1150#define DEBUG(a)
1151#define DEBUG_p(a)
1152#define DEBUG_s(a)
1153#define DEBUG_l(a)
1154#define DEBUG_t(a)
1155#define DEBUG_o(a)
1156#define DEBUG_c(a)
1157#define DEBUG_P(a)
1158#define DEBUG_m(a)
1159#define DEBUG_f(a)
1160#define DEBUG_r(a)
1161#define DEBUG_x(a)
1162#define DEBUG_u(a)
1163#define DEBUG_L(a)
1164#define DEBUG_H(a)
1165#define DEBUG_X(a)
8990e307 1166#define DEBUG_D(a)
8d063cd8 1167#endif
fe14fcc3 1168#define YYMAXDEPTH 300
8d063cd8 1169
a6e633de 1170#ifndef assert /* <assert.h> might have been included somehow */
79072805
LW		 1171#define assert(what) DEB( { \
1172 if (!(what)) { \
463ee0b2 1173 croak("Assertion failed: file \"%s\", line %d", \
79072805
LW		 1174 __FILE__, __LINE__); \
1175 exit(1); \
1176 }})
a6e633de 1177#endif
8d063cd8 1178
450a55e4 1179struct ufuncs {
a0d0e21e
LW		 1180 I32 (*uf_val)_((IV, SV*));
1181 I32 (*uf_set)_((IV, SV*));
1182 IV uf_index;
450a55e4
LW		 1183};
1184
fe14fcc3 1185/* Fix these up for __STDC__ */
68dc0745 1186#ifndef DONT_DECLARE_STD
a0d0e21e
LW		 1187char *mktemp _((char*));
1188double atof _((const char*));
1189#endif
79072805 1190
352d5a3a 1191#ifndef STANDARD_C
fe14fcc3 1192/* All of these are in stdlib.h or time.h for ANSI C */
85e6fe83 1193Time_t time();
8d063cd8 1194struct tm *gmtime(), *localtime();
93a17b20 1195char *strchr(), *strrchr();
378cc40b 1196char *strcpy(), *strcat();
352d5a3a 1197#endif /* ! STANDARD_C */
8d063cd8 1198
79072805
LW		 1199
1200#ifdef I_MATH
1201# include <math.h>
1202#else
1203# ifdef __cplusplus
1204 extern "C" {
1205# endif
a0d0e21e 1206 double exp _((double));
a0d0e21e
LW		 1207 double log _((double));
1208 double sqrt _((double));
1209 double modf _((double,double*));
1210 double sin _((double));
1211 double cos _((double));
1212 double atan2 _((double,double));
1213 double pow _((double,double));
79072805
LW		 1214# ifdef __cplusplus
1215 };
1216# endif
1217#endif
1218
a0d0e21e 1219#ifndef __cplusplus
3fc1aec6 1220#ifdef __NeXT__ /* or whatever catches all NeXTs */
1221char *crypt (); /* Maybe more hosts will need the unprototyped version */
1222#else
a0d0e21e 1223char *crypt _((const char*, const char*));
3fc1aec6 1224#endif
68dc0745 1225#ifndef DONT_DECLARE_STD
1e422769 1226#ifndef getenv
a0d0e21e 1227char *getenv _((const char*));
1e422769 1228#endif
a0d0e21e 1229Off_t lseek _((int,Off_t,int));
68dc0745 1230#endif
a0d0e21e
LW		 1231char *getlogin _((void));
1232#endif
79072805 1233
16d20bd9 1234#ifdef UNLINK_ALL_VERSIONS /* Currently only makes sense for VMS */
378cc40b 1235#define UNLINK unlnk
a0d0e21e 1236I32 unlnk _((char*));
8d063cd8
LW		 1237#else
1238#define UNLINK unlink
1239#endif
a687059c 1240
fe14fcc3 1241#ifndef HAS_SETREUID
85e6fe83
LW		 1242# ifdef HAS_SETRESUID
1243# define setreuid(r,e) setresuid(r,e,(Uid_t)-1)
1244# define HAS_SETREUID
1245# endif
a687059c 1246#endif
fe14fcc3 1247#ifndef HAS_SETREGID
85e6fe83
LW		 1248# ifdef HAS_SETRESGID
1249# define setregid(r,e) setresgid(r,e,(Gid_t)-1)
1250# define HAS_SETREGID
1251# endif
a687059c 1252#endif
ee0007ab 1253
ff68c719 1254typedef Signal_t (*Sighandler_t) _((int));
1255
1256#ifdef HAS_SIGACTION
1257typedef struct sigaction Sigsave_t;
1258#else
1259typedef Sighandler_t Sigsave_t;
1260#endif
1261
ee0007ab
LW		 1262#define SCAN_DEF 0
1263#define SCAN_TR 1
1264#define SCAN_REPL 2
79072805
LW		 1265
1266#ifdef DEBUGGING
4633a7c4 1267# ifndef register
a0d0e21e
LW		 1268# define register
1269# endif
55497cff 1270# ifdef MYMALLOC
1271# ifndef DEBUGGING_MSTATS
1272# define DEBUGGING_MSTATS
1273# endif
1274# endif
a0d0e21e 1275# define PAD_SV(po) pad_sv(po)
79072805 1276#else
a0d0e21e 1277# define PAD_SV(po) curpad[po]
79072805
LW		 1278#endif
1279
1280/****************/
1281/* Truly global */
1282/****************/
1283
1284/* global state */
a0d0e21e 1285EXT PerlInterpreter * curinterp; /* currently running interpreter */
0c30d9ec 1286/* VMS doesn't use environ array and NeXT has problems with crt0.o globals */
1287#if !defined(VMS) && !(defined(NeXT) && defined(__DYNAMIC__))
68dc0745 1288#ifndef DONT_DECLARE_STD
79072805 1289extern char ** environ; /* environment variables supplied via exec */
68dc0745 1290#endif
0c30d9ec 1291#else
1292# if defined(NeXT) && defined(__DYNAMIC__)
1293
1294# include <mach-o/dyld.h>
1295EXT char *** environ_pointer;
1296# define environ (*environ_pointer)
1297# endif
1298#endif /* environ processing */
1299
79072805
LW		 1300EXT int uid; /* current real user id */
1301EXT int euid; /* current effective user id */
1302EXT int gid; /* current real group id */
1303EXT int egid; /* current effective group id */
1304EXT bool nomemok; /* let malloc context handle nomem */
1305EXT U32 an; /* malloc sequence number */
463ee0b2 1306EXT U32 cop_seqmax; /* statement sequence number */
c07a80fd 1307EXT U16 op_seqmax; /* op sequence number */
8990e307 1308EXT U32 evalseq; /* eval sequence number */
463ee0b2 1309EXT U32 sub_generation; /* inc to force methods to be looked up again */
79072805
LW		 1310EXT char ** origenviron;
1311EXT U32 origalen;
44a8e56a 1312EXT HV * pidstatus; /* pid-to-status mappings for waitpid */
a0d0e21e 1313EXT U32 * profiledata;
84ea024a 1314EXT int maxo INIT(MAXO);/* Number of ops */
728e2803 1315EXT char * osname; /* operating system */
ff68c719 1316EXT char * sh_path INIT(SH_PATH); /* full path of shell */
79072805 1317
a0d0e21e
LW		 1318EXT XPV* xiv_arenaroot; /* list of allocated xiv areas */
1319EXT IV ** xiv_root; /* free xiv list--shared by interpreters */
8990e307
LW		 1320EXT double * xnv_root; /* free xnv list--shared by interpreters */
1321EXT XRV * xrv_root; /* free xrv list--shared by interpreters */
1322EXT XPV * xpv_root; /* free xpv list--shared by interpreters */
4633a7c4 1323EXT HE * he_root; /* free he list--shared by interpreters */
c07a80fd 1324EXT char * nice_chunk; /* a nice chunk of memory to reuse */
1325EXT U32 nice_chunk_size;/* how nice the chunk of memory is */
8990e307 1326
79072805
LW		 1327/* Stack for currently executing thread--context switch must handle this. */
1328EXT SV ** stack_base; /* stack->array_ary */
1329EXT SV ** stack_sp; /* stack pointer now */
1330EXT SV ** stack_max; /* stack->array_ary + stack->array_max */
1331
1332/* likewise for these */
1333
1334EXT OP * op; /* current op--oughta be in a global register */
1335
1336EXT I32 * scopestack; /* blocks we've entered */
1337EXT I32 scopestack_ix;
1338EXT I32 scopestack_max;
1339
1340EXT ANY* savestack; /* to save non-local values on */
1341EXT I32 savestack_ix;
1342EXT I32 savestack_max;
1343
1344EXT OP ** retstack; /* returns we've pushed */
1345EXT I32 retstack_ix;
1346EXT I32 retstack_max;
1347
1348EXT I32 * markstack; /* stackmarks we're remembering */
1349EXT I32 * markstack_ptr; /* stackmarks we're remembering */
1350EXT I32 * markstack_max; /* stackmarks we're remembering */
1351
1352EXT SV ** curpad;
1353
1354/* temp space */
1355EXT SV * Sv;
1356EXT XPV * Xpv;
79072805
LW		 1357EXT char tokenbuf[256];
1358EXT struct stat statbuf;
ecfc5424 1359#ifdef HAS_TIMES
79072805
LW		 1360EXT struct tms timesbuf;
1361#endif
463ee0b2 1362EXT STRLEN na; /* for use in SvPV when length is Not Applicable */
79072805
LW		 1363
1364/* for tmp use in stupid debuggers */
1365EXT int * di;
1366EXT short * ds;
1367EXT char * dc;
1368
1369/* handy constants */
71be2cbc 1370EXTCONST char * Yes INIT("1");
1371EXTCONST char * No INIT("");
1372EXTCONST char * hexdigit INIT("0123456789abcdef0123456789ABCDEFx");
1373EXTCONST char * patleave INIT("\\.^$@dDwWsSbB+*?|()-nrtfeaxc0123456789[{]}");
1374EXTCONST char * vert INIT("|");
79072805 1375
71be2cbc 1376EXTCONST char warn_uninit[]
a0d0e21e 1377 INIT("Use of uninitialized value");
71be2cbc 1378EXTCONST char warn_nosemi[]
463ee0b2 1379 INIT("Semicolon seems to be missing");
71be2cbc 1380EXTCONST char warn_reserved[]
463ee0b2 1381 INIT("Unquoted string \"%s\" may clash with future reserved word");
71be2cbc 1382EXTCONST char warn_nl[]
93a17b20 1383 INIT("Unsuccessful %s on filename containing newline");
71be2cbc 1384EXTCONST char no_wrongref[]
a0d0e21e 1385 INIT("Can't use %s ref as %s ref");
71be2cbc 1386EXTCONST char no_symref[]
748a9306 1387 INIT("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use");
71be2cbc 1388EXTCONST char no_usym[]
8990e307 1389 INIT("Can't use an undefined value as %s reference");
71be2cbc 1390EXTCONST char no_aelem[]
93a17b20 1391 INIT("Modification of non-creatable array value attempted, subscript %d");
71be2cbc 1392EXTCONST char no_helem[]
93a17b20 1393 INIT("Modification of non-creatable hash value attempted, subscript \"%s\"");
71be2cbc 1394EXTCONST char no_modify[]
93a17b20 1395 INIT("Modification of a read-only value attempted");
71be2cbc 1396EXTCONST char no_mem[]
93a17b20 1397 INIT("Out of memory!\n");
71be2cbc 1398EXTCONST char no_security[]
463ee0b2 1399 INIT("Insecure dependency in %s%s");
71be2cbc 1400EXTCONST char no_sock_func[]
93a17b20 1401 INIT("Unsupported socket function \"%s\" called");
71be2cbc 1402EXTCONST char no_dir_func[]
93a17b20 1403 INIT("Unsupported directory function \"%s\" called");
71be2cbc 1404EXTCONST char no_func[]
93a17b20 1405 INIT("The %s function is unimplemented");
71be2cbc 1406EXTCONST char no_myglob[]
748a9306 1407 INIT("\"my\" variable %s can't be in a package");
93a17b20 1408
79072805
LW		 1409EXT SV sv_undef;
1410EXT SV sv_no;
1411EXT SV sv_yes;
1412#ifdef CSH
1413 EXT char * cshname INIT(CSH);
1414 EXT I32 cshlen;
1415#endif
1416
1417#ifdef DOINIT
8e07c86e
AD		 1418EXT char *sig_name[] = { SIG_NAME };
1419EXT int sig_num[] = { SIG_NUM };
0c30d9ec 1420EXT SV * psig_ptr[sizeof(sig_num)/sizeof(*sig_num)];
1421EXT SV * psig_name[sizeof(sig_num)/sizeof(*sig_num)];
79072805
LW		 1422#else
1423EXT char *sig_name[];
8e07c86e 1424EXT int sig_num[];
0c30d9ec 1425EXT SV * psig_ptr[];
1426EXT SV * psig_name[];
79072805
LW		 1427#endif
1428
bbce6d69 1429/* fast case folding tables */
1430
79072805 1431#ifdef DOINIT
36477c24 1432EXTCONST unsigned char fold[] = {
79072805
LW		 1433 0, 1, 2, 3, 4, 5, 6, 7,
1434 8, 9, 10, 11, 12, 13, 14, 15,
1435 16, 17, 18, 19, 20, 21, 22, 23,
1436 24, 25, 26, 27, 28, 29, 30, 31,
1437 32, 33, 34, 35, 36, 37, 38, 39,
1438 40, 41, 42, 43, 44, 45, 46, 47,
1439 48, 49, 50, 51, 52, 53, 54, 55,
1440 56, 57, 58, 59, 60, 61, 62, 63,
1441 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
1442 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
1443 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
1444 'x', 'y', 'z', 91, 92, 93, 94, 95,
1445 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
1446 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
1447 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
1448 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
1449 128, 129, 130, 131, 132, 133, 134, 135,
1450 136, 137, 138, 139, 140, 141, 142, 143,
1451 144, 145, 146, 147, 148, 149, 150, 151,
1452 152, 153, 154, 155, 156, 157, 158, 159,
1453 160, 161, 162, 163, 164, 165, 166, 167,
1454 168, 169, 170, 171, 172, 173, 174, 175,
1455 176, 177, 178, 179, 180, 181, 182, 183,
1456 184, 185, 186, 187, 188, 189, 190, 191,
1457 192, 193, 194, 195, 196, 197, 198, 199,
1458 200, 201, 202, 203, 204, 205, 206, 207,
1459 208, 209, 210, 211, 212, 213, 214, 215,
1460 216, 217, 218, 219, 220, 221, 222, 223,
1461 224, 225, 226, 227, 228, 229, 230, 231,
1462 232, 233, 234, 235, 236, 237, 238, 239,
1463 240, 241, 242, 243, 244, 245, 246, 247,
1464 248, 249, 250, 251, 252, 253, 254, 255
1465};
1466#else
71be2cbc 1467EXTCONST unsigned char fold[];
79072805
LW		 1468#endif
1469
1470#ifdef DOINIT
bbce6d69 1471EXT unsigned char fold_locale[] = {
1472 0, 1, 2, 3, 4, 5, 6, 7,
1473 8, 9, 10, 11, 12, 13, 14, 15,
1474 16, 17, 18, 19, 20, 21, 22, 23,
1475 24, 25, 26, 27, 28, 29, 30, 31,
1476 32, 33, 34, 35, 36, 37, 38, 39,
1477 40, 41, 42, 43, 44, 45, 46, 47,
1478 48, 49, 50, 51, 52, 53, 54, 55,
1479 56, 57, 58, 59, 60, 61, 62, 63,
1480 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
1481 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
1482 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
1483 'x', 'y', 'z', 91, 92, 93, 94, 95,
1484 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
1485 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
1486 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
1487 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
1488 128, 129, 130, 131, 132, 133, 134, 135,
1489 136, 137, 138, 139, 140, 141, 142, 143,
1490 144, 145, 146, 147, 148, 149, 150, 151,
1491 152, 153, 154, 155, 156, 157, 158, 159,
1492 160, 161, 162, 163, 164, 165, 166, 167,
1493 168, 169, 170, 171, 172, 173, 174, 175,
1494 176, 177, 178, 179, 180, 181, 182, 183,
1495 184, 185, 186, 187, 188, 189, 190, 191,
1496 192, 193, 194, 195, 196, 197, 198, 199,
1497 200, 201, 202, 203, 204, 205, 206, 207,
1498 208, 209, 210, 211, 212, 213, 214, 215,
1499 216, 217, 218, 219, 220, 221, 222, 223,
1500 224, 225, 226, 227, 228, 229, 230, 231,
1501 232, 233, 234, 235, 236, 237, 238, 239,
1502 240, 241, 242, 243, 244, 245, 246, 247,
1503 248, 249, 250, 251, 252, 253, 254, 255
1504};
1505#else
1506EXT unsigned char fold_locale[];
1507#endif
1508
1509#ifdef DOINIT
71be2cbc 1510EXTCONST unsigned char freq[] = { /* letter frequencies for mixed English/C */
79072805
LW		 1511 1, 2, 84, 151, 154, 155, 156, 157,
1512 165, 246, 250, 3, 158, 7, 18, 29,
1513 40, 51, 62, 73, 85, 96, 107, 118,
1514 129, 140, 147, 148, 149, 150, 152, 153,
1515 255, 182, 224, 205, 174, 176, 180, 217,
1516 233, 232, 236, 187, 235, 228, 234, 226,
1517 222, 219, 211, 195, 188, 193, 185, 184,
1518 191, 183, 201, 229, 181, 220, 194, 162,
1519 163, 208, 186, 202, 200, 218, 198, 179,
1520 178, 214, 166, 170, 207, 199, 209, 206,
1521 204, 160, 212, 216, 215, 192, 175, 173,
1522 243, 172, 161, 190, 203, 189, 164, 230,
1523 167, 248, 227, 244, 242, 255, 241, 231,
1524 240, 253, 169, 210, 245, 237, 249, 247,
1525 239, 168, 252, 251, 254, 238, 223, 221,
1526 213, 225, 177, 197, 171, 196, 159, 4,
1527 5, 6, 8, 9, 10, 11, 12, 13,
1528 14, 15, 16, 17, 19, 20, 21, 22,
1529 23, 24, 25, 26, 27, 28, 30, 31,
1530 32, 33, 34, 35, 36, 37, 38, 39,
1531 41, 42, 43, 44, 45, 46, 47, 48,
1532 49, 50, 52, 53, 54, 55, 56, 57,
1533 58, 59, 60, 61, 63, 64, 65, 66,
1534 67, 68, 69, 70, 71, 72, 74, 75,
1535 76, 77, 78, 79, 80, 81, 82, 83,
1536 86, 87, 88, 89, 90, 91, 92, 93,
1537 94, 95, 97, 98, 99, 100, 101, 102,
1538 103, 104, 105, 106, 108, 109, 110, 111,
1539 112, 113, 114, 115, 116, 117, 119, 120,
1540 121, 122, 123, 124, 125, 126, 127, 128,
1541 130, 131, 132, 133, 134, 135, 136, 137,
1542 138, 139, 141, 142, 143, 144, 145, 146
1543};
1544#else
71be2cbc 1545EXTCONST unsigned char freq[];
79072805
LW		 1546#endif
1547
8990e307
LW		 1548#ifdef DEBUGGING
1549#ifdef DOINIT
71be2cbc 1550EXTCONST char* block_type[] = {
8990e307
LW		 1551 "NULL",
1552 "SUB",
1553 "EVAL",
1554 "LOOP",
1555 "SUBST",
1556 "BLOCK",
1557};
1558#else
71be2cbc 1559EXTCONST char* block_type[];
8990e307
LW		 1560#endif
1561#endif
1562
79072805
LW		 1563/*****************************************************************************/
1564/* This lexer/parser stuff is currently global since yacc is hard to reenter */
1565/*****************************************************************************/
8990e307 1566/* XXX This needs to be revisited, since BEGIN makes yacc re-enter... */
79072805 1567
a0d0e21e
LW		 1568#include "perly.h"
1569
79072805
LW		 1570typedef enum {
1571 XOPERATOR,
1572 XTERM,
79072805 1573 XREF,
8990e307 1574 XSTATE,
a0d0e21e
LW		 1575 XBLOCK,
1576 XTERMBLOCK
79072805
LW		 1577} expectation;
1578
a0d0e21e
LW		 1579EXT U32 lex_state; /* next token is determined */
1580EXT U32 lex_defer; /* state after determined token */
1581EXT expectation lex_expect; /* expect after determined token */
1582EXT I32 lex_brackets; /* bracket count */
1583EXT I32 lex_formbrack; /* bracket count at outer format level */
1584EXT I32 lex_fakebrack; /* outer bracket is mere delimiter */
1585EXT I32 lex_casemods; /* casemod count */
1586EXT I32 lex_dojoin; /* doing an array interpolation */
1587EXT I32 lex_starts; /* how many interps done on level */
1588EXT SV * lex_stuff; /* runtime pattern from m// or s/// */
1589EXT SV * lex_repl; /* runtime replacement from s/// */
1590EXT OP * lex_op; /* extra info to pass back on op */
1591EXT OP * lex_inpat; /* in pattern $) and $| are special */
1592EXT I32 lex_inwhat; /* what kind of quoting are we in */
1593EXT char * lex_brackstack; /* what kind of brackets to pop */
1594EXT char * lex_casestack; /* what kind of case mods in effect */
1595
1596/* What we know when we're in LEX_KNOWNEXT state. */
1597EXT YYSTYPE nextval[5]; /* value of next token, if any */
1598EXT I32 nexttype[5]; /* type of next token */
1599EXT I32 nexttoke;
1600
760ac839 1601EXT PerlIO * VOL rsfp INIT(Nullfp);
79072805
LW		 1602EXT SV * linestr;
1603EXT char * bufptr;
1604EXT char * oldbufptr;
1605EXT char * oldoldbufptr;
1606EXT char * bufend;
8990e307 1607EXT expectation expect INIT(XSTATE); /* how to interpret ambiguous tokens */
16d20bd9 1608EXT AV * rsfp_filters;
79072805
LW		 1609
1610EXT I32 multi_start; /* 1st line of multi-line string */
1611EXT I32 multi_end; /* last line of multi-line string */
1612EXT I32 multi_open; /* delimiter of said string */
1613EXT I32 multi_close; /* delimiter of said string */
1614
1615EXT GV * scrgv;
1616EXT I32 error_count; /* how many errors so far, max 10 */
1617EXT I32 subline; /* line this subroutine began on */
1618EXT SV * subname; /* name of current subroutine */
1619
748a9306 1620EXT CV * compcv; /* currently compiling subroutine */
93a17b20 1621EXT AV * comppad; /* storage for lexically scoped temporaries */
8990e307
LW		 1622EXT AV * comppad_name; /* variable names for "my" variables */
1623EXT I32 comppad_name_fill;/* last "introduced" variable offset */
0c30d9ec 1624EXT I32 comppad_name_floor;/* start of vars in innermost block */
8990e307
LW		 1625EXT I32 min_intro_pending;/* start of vars to introduce */
1626EXT I32 max_intro_pending;/* end of vars to introduce */
79072805 1627EXT I32 padix; /* max used index in current "register" pad */
a0d0e21e 1628EXT I32 padix_floor; /* how low may inner block reset padix */
748a9306 1629EXT I32 pad_reset_pending; /* reset pad on next attempted alloc */
79072805
LW		 1630EXT COP compiling;
1631
79072805
LW		 1632EXT I32 thisexpr; /* name id for nothing_in_common() */
1633EXT char * last_uni; /* position of last named-unary operator */
1634EXT char * last_lop; /* position of last list operator */
8990e307 1635EXT OPCODE last_lop_op; /* last list operator */
93a17b20 1636EXT bool in_my; /* we're compiling a "my" declaration */
79072805
LW		 1637#ifdef FCRYPT
1638EXT I32 cryptseen; /* has fast crypt() been initialized? */
1639#endif
1640
85e6fe83
LW		 1641EXT U32 hints; /* various compilation flags */
1642
1643 /* Note: the lowest 8 bits are reserved for
1644 stuffing into op->op_private */
1645#define HINT_INTEGER 0x00000001
1646#define HINT_STRICT_REFS 0x00000002
1647
1648#define HINT_BLOCK_SCOPE 0x00000100
1649#define HINT_STRICT_SUBS 0x00000200
1650#define HINT_STRICT_VARS 0x00000400
bbce6d69 1651#define HINT_LOCALE 0x00000800
85e6fe83 1652
79072805
LW		 1653/**************************************************************************/
1654/* This regexp stuff is global since it always happens within 1 expr eval */
1655/**************************************************************************/
1656
1657EXT char * regprecomp; /* uncompiled string. */
1658EXT char * regparse; /* Input-scan pointer. */
1659EXT char * regxend; /* End of input for compile */
1660EXT I32 regnpar; /* () count. */
1661EXT char * regcode; /* Code-emit pointer; &regdummy = don't. */
1662EXT I32 regsize; /* Code size. */
a0d0e21e 1663EXT I32 regnaughty; /* How bad is this pattern? */
79072805
LW		 1664EXT I32 regsawback; /* Did we see \1, ...? */
1665
1666EXT char * reginput; /* String-input pointer. */
79072805
LW		 1667EXT char * regbol; /* Beginning of input, for ^ check. */
1668EXT char * regeol; /* End of input, for $ check. */
1669EXT char ** regstartp; /* Pointer to startp array. */
1670EXT char ** regendp; /* Ditto for endp. */
a0d0e21e 1671EXT U32 * reglastparen; /* Similarly for lastparen. */
79072805 1672EXT char * regtill; /* How far we are required to go. */
a0d0e21e
LW		 1673EXT U16 regflags; /* are we folding, multilining? */
1674EXT char regprev; /* char before regbol, \n if none */
79072805 1675
760ac839
LW		 1676EXT bool do_undump; /* -u or dump seen? */
1677EXT VOL U32 debug;
1678
79072805
LW		 1679/***********************************************/
1680/* Global only to current interpreter instance */
1681/***********************************************/
1682
8990e307 1683#ifdef MULTIPLICITY
79072805
LW		 1684#define IEXT
1685#define IINIT(x)
1686struct interpreter {
1687#else
1688#define IEXT EXT
1689#define IINIT(x) INIT(x)
1690#endif
1691
1692/* pseudo environmental stuff */
1693IEXT int Iorigargc;
1694IEXT char ** Iorigargv;
1695IEXT GV * Ienvgv;
1696IEXT GV * Isiggv;
1697IEXT GV * Iincgv;
1698IEXT char * Iorigfilename;
748a9306
LW		 1699IEXT SV * Idiehook;
1700IEXT SV * Iwarnhook;
1701IEXT SV * Iparsehook;
79072805 1702
c07a80fd 1703/* Various states of an input record separator SV (rs, nrs) */
1704#define RsSNARF(sv) (! SvOK(sv))
1705#define RsSIMPLE(sv) (SvOK(sv) && SvCUR(sv))
1706#define RsPARA(sv) (SvOK(sv) && ! SvCUR(sv))
1707
79072805
LW		 1708/* switches */
1709IEXT char * Icddir;
1710IEXT bool Iminus_c;
a5f75d66 1711IEXT char Ipatchlevel[10];
728e2803 1712IEXT char ** Ilocalpatches;
c07a80fd 1713IEXT SV * Inrs;
2304df62 1714IEXT char * Isplitstr IINIT(" ");
79072805
LW		 1715IEXT bool Ipreprocess;
1716IEXT bool Iminus_n;
1717IEXT bool Iminus_p;
1718IEXT bool Iminus_l;
1719IEXT bool Iminus_a;
2304df62 1720IEXT bool Iminus_F;
79072805
LW		 1721IEXT bool Idoswitches;
1722IEXT bool Idowarn;
1723IEXT bool Idoextract;
79072805
LW		 1724IEXT bool Isawampersand; /* must save all match strings */
1725IEXT bool Isawstudy; /* do fbm_instr on all strings */
79072805
LW		 1726IEXT bool Isawvec;
1727IEXT bool Iunsafe;
79072805
LW		 1728IEXT char * Iinplace;
1729IEXT char * Ie_tmpname;
760ac839 1730IEXT PerlIO * Ie_fp;
79072805 1731IEXT U32 Iperldb;
748a9306 1732 /* This value may be raised by extensions for testing purposes */
8ebc5c01 1733IEXT int Iperl_destruct_level IINIT(0); /* 0=none, 1=full, 2=full with checks */
79072805
LW		 1734
1735/* magical thingies */
85e6fe83 1736IEXT Time_t Ibasetime; /* $^T */
79072805
LW		 1737IEXT SV * Iformfeed; /* $^L */
1738IEXT char * Ichopset IINIT(" \n-"); /* $: */
c07a80fd 1739IEXT SV * Irs; /* $/ */
79072805 1740IEXT char * Iofs; /* $, */
8990e307 1741IEXT STRLEN Iofslen;
79072805 1742IEXT char * Iors; /* $\ */
8990e307 1743IEXT STRLEN Iorslen;
79072805
LW		 1744IEXT char * Iofmt; /* $# */
1745IEXT I32 Imaxsysfd IINIT(MAXSYSFD); /* top fd to pass to subprocesses */
f86702cc 1746IEXT int Imultiline; /* $*--do strings hold >1 line? */
91e9c03f 1747IEXT I32 Istatusvalue; /* $? */
f86702cc 1748#ifdef VMS
ff0cee69 1749IEXT U32 Istatusvalue_vms;
f86702cc 1750#endif
79072805
LW		 1751
1752IEXT struct stat Istatcache; /* _ */
1753IEXT GV * Istatgv;
1754IEXT SV * Istatname IINIT(Nullsv);
1755
1756/* shortcuts to various I/O objects */
1757IEXT GV * Istdingv;
1758IEXT GV * Ilast_in_gv;
1759IEXT GV * Idefgv;
1760IEXT GV * Iargvgv;
1761IEXT GV * Idefoutgv;
79072805
LW		 1762IEXT GV * Iargvoutgv;
1763
1764/* shortcuts to regexp stuff */
1765IEXT GV * Ileftgv;
1766IEXT GV * Iampergv;
1767IEXT GV * Irightgv;
1768IEXT PMOP * Icurpm; /* what to do \ interps from */
79072805
LW		 1769IEXT I32 * Iscreamfirst;
1770IEXT I32 * Iscreamnext;
1771IEXT I32 Imaxscream IINIT(-1);
1772IEXT SV * Ilastscream;
1773
4633a7c4
LW		 1774/* shortcuts to misc objects */
1775IEXT GV * Ierrgv;
1776
79072805
LW		 1777/* shortcuts to debugging objects */
1778IEXT GV * IDBgv;
1779IEXT GV * IDBline;
1780IEXT GV * IDBsub;
1781IEXT SV * IDBsingle;
1782IEXT SV * IDBtrace;
1783IEXT SV * IDBsignal;
1784IEXT AV * Ilineary; /* lines of script for debugger */
1785IEXT AV * Idbargs; /* args to call listed by caller function */
1786
1787/* symbol tables */
1788IEXT HV * Idefstash; /* main symbol table */
1789IEXT HV * Icurstash; /* symbol table for current package */
1790IEXT HV * Idebstash; /* symbol table for perldb package */
1791IEXT SV * Icurstname; /* name of current package */
93a17b20
LW		 1792IEXT AV * Ibeginav; /* names of BEGIN subroutines */
1793IEXT AV * Iendav; /* names of END subroutines */
0c30d9ec 1794IEXT HV * Istrtab; /* shared string table */
79072805
LW		 1795
1796/* memory management */
79072805
LW		 1797IEXT SV ** Itmps_stack;
1798IEXT I32 Itmps_ix IINIT(-1);
1799IEXT I32 Itmps_floor IINIT(-1);
8990e307
LW		 1800IEXT I32 Itmps_max;
1801IEXT I32 Isv_count; /* how many SV* are currently allocated */
a0d0e21e 1802IEXT I32 Isv_objcount; /* how many objects are currently allocated */
8990e307
LW		 1803IEXT SV* Isv_root; /* storage for SVs belonging to interp */
1804IEXT SV* Isv_arenaroot; /* list of areas for garbage collection */
79072805
LW		 1805
1806/* funky return mechanisms */
1807IEXT I32 Ilastspbase;
1808IEXT I32 Ilastsize;
1809IEXT int Iforkprocess; /* so do_open |- can return proc# */
1810
1811/* subprocess state */
1812IEXT AV * Ifdpid; /* keep fd-to-pid mappings for my_popen */
79072805
LW		 1813
1814/* internal state */
463ee0b2
LW		 1815IEXT VOL int Iin_eval; /* trap "fatal" errors? */
1816IEXT OP * Irestartop; /* Are we propagating an error from croak? */
79072805 1817IEXT int Idelaymagic; /* ($<,$>) = ... */
2304df62 1818IEXT bool Idirty; /* In the middle of tearing things down? */
748a9306 1819IEXT U8 Ilocalizing; /* are we processing a local() list? */
79072805 1820IEXT bool Itainted; /* using variables controlled by $< */
463ee0b2 1821IEXT bool Itainting; /* doing taint checks */
e50aee73 1822IEXT char * Iop_mask IINIT(NULL); /* masked operations for safe evals */
79072805
LW		 1823
1824/* trace state */
1825IEXT I32 Idlevel;
1826IEXT I32 Idlmax IINIT(128);
1827IEXT char * Idebname;
1828IEXT char * Idebdelim;
1829
1830/* current interpreter roots */
748a9306 1831IEXT CV * Imain_cv;
463ee0b2
LW		 1832IEXT OP * Imain_root;
1833IEXT OP * Imain_start;
1834IEXT OP * Ieval_root;
1835IEXT OP * Ieval_start;
79072805
LW		 1836
1837/* runtime control stuff */
1838IEXT COP * VOL Icurcop IINIT(&compiling);
0c30d9ec 1839IEXT COP * Icurcopdb IINIT(NULL);
79072805
LW		 1840IEXT line_t Icopline IINIT(NOLINE);
1841IEXT CONTEXT * Icxstack;
1842IEXT I32 Icxstack_ix IINIT(-1);
1843IEXT I32 Icxstack_max IINIT(128);
54310121 1844IEXT JMPENV Istart_env; /* empty startup sigjmp() environment */
1845IEXT JMPENV * Itop_env; /* ptr. to current sigjmp() environment */
a0d0e21e 1846IEXT I32 Irunlevel;
79072805
LW		 1847
1848/* stack stuff */
0c30d9ec 1849IEXT AV * Icurstack; /* THE STACK */
79072805
LW		 1850IEXT AV * Imainstack; /* the stack when nothing funny is happening */
1851IEXT SV ** Imystack_base; /* stack->array_ary */
1852IEXT SV ** Imystack_sp; /* stack pointer now */
1853IEXT SV ** Imystack_max; /* stack->array_ary + stack->array_max */
1854
1855/* format accumulators */
463ee0b2
LW		 1856IEXT SV * Iformtarget;
1857IEXT SV * Ibodytarget;
1858IEXT SV * Itoptarget;
79072805
LW		 1859
1860/* statics moved here for shared library purposes */
93a17b20 1861IEXT SV Istrchop; /* return value from chop */
79072805
LW		 1862IEXT int Ifilemode; /* so nextargv() can preserve mode */
1863IEXT int Ilastfd; /* what to preserve mode on */
1864IEXT char * Ioldname; /* what to preserve mode on */
1865IEXT char ** IArgv; /* stuff to free from do_aexec, vfork safe */
1866IEXT char * ICmd; /* stuff to free from do_aexec, vfork safe */
1867IEXT OP * Isortcop; /* user defined sort routine */
1868IEXT HV * Isortstash; /* which is in some package or other */
1869IEXT GV * Ifirstgv; /* $a */
1870IEXT GV * Isecondgv; /* $b */
1871IEXT AV * Isortstack; /* temp stack during pp_sort() */
1872IEXT AV * Isignalstack; /* temp stack during sighandler() */
1873IEXT SV * Imystrk; /* temp key string for do_each() */
1874IEXT I32 Idumplvl; /* indentation level on syntax tree dump */
79072805
LW		 1875IEXT PMOP * Ioldlastpm; /* for saving regexp context during debugger */
1876IEXT I32 Igensym; /* next symbol for getsym() to define */
1877IEXT bool Ipreambled;
3c81428c 1878IEXT AV * Ipreambleav;
79072805
LW		 1879IEXT int Ilaststatval IINIT(-1);
1880IEXT I32 Ilaststype IINIT(OP_STAT);
46fc3d4c 1881IEXT SV * Imess_sv;
79072805
LW		 1882
1883#undef IEXT
1884#undef IINIT
1885
8990e307 1886#ifdef MULTIPLICITY
79072805
LW		 1887};
1888#else
1889struct interpreter {
1890 char broiled;
1891};
1892#endif
1893
1894#include "pp.h"
1895
1896#ifdef __cplusplus
1897extern "C" {
1898#endif
1899
1900#include "proto.h"
1901
a0d0e21e
LW		 1902#ifdef EMBED
1903#define Perl_sv_setptrobj(rv,ptr,name) Perl_sv_setref_iv(rv,name,(IV)ptr)
1904#define Perl_sv_setptrref(rv,ptr) Perl_sv_setref_iv(rv,Nullch,(IV)ptr)
1905#else
1906#define sv_setptrobj(rv,ptr,name) sv_setref_iv(rv,name,(IV)ptr)
1907#define sv_setptrref(rv,ptr) sv_setref_iv(rv,Nullch,(IV)ptr)
1908#endif
1909
79072805
LW		 1910#ifdef __cplusplus
1911};
1912#endif
1913
93a17b20 1914/* The following must follow proto.h */
79072805
LW		 1915
1916#ifdef DOINIT
bbce6d69 1917
4633a7c4 1918EXT MGVTBL vtbl_sv = {magic_get,
463ee0b2
LW		 1919 magic_set,
1920 magic_len,
1921 0, 0};
4633a7c4
LW		 1922EXT MGVTBL vtbl_env = {0, 0, 0, 0, 0};
1923EXT MGVTBL vtbl_envelem = {0, magic_setenv,
85e6fe83
LW		 1924 0, magic_clearenv,
1925 0};
4633a7c4 1926EXT MGVTBL vtbl_sig = {0, 0, 0, 0, 0};
0c30d9ec 1927EXT MGVTBL vtbl_sigelem = {magic_getsig,
1928 magic_setsig,
1929 0, magic_clearsig,
1930 0};
4633a7c4 1931EXT MGVTBL vtbl_pack = {0, 0, 0, magic_wipepack,
a0d0e21e 1932 0};
4633a7c4 1933EXT MGVTBL vtbl_packelem = {magic_getpack,
463ee0b2
LW		 1934 magic_setpack,
1935 0, magic_clearpack,
1936 0};
4633a7c4 1937EXT MGVTBL vtbl_dbline = {0, magic_setdbline,
463ee0b2 1938 0, 0, 0};
4633a7c4 1939EXT MGVTBL vtbl_isa = {0, magic_setisa,
463ee0b2 1940 0, 0, 0};
4633a7c4 1941EXT MGVTBL vtbl_isaelem = {0, magic_setisa,
463ee0b2 1942 0, 0, 0};
4633a7c4 1943EXT MGVTBL vtbl_arylen = {magic_getarylen,
463ee0b2
LW		 1944 magic_setarylen,
1945 0, 0, 0};
4633a7c4 1946EXT MGVTBL vtbl_glob = {magic_getglob,
463ee0b2
LW		 1947 magic_setglob,
1948 0, 0, 0};
4633a7c4 1949EXT MGVTBL vtbl_mglob = {0, magic_setmglob,
463ee0b2 1950 0, 0, 0};
99abf803 1951EXT MGVTBL vtbl_nkeys = {0, magic_setnkeys,
1952 0, 0, 0};
4633a7c4 1953EXT MGVTBL vtbl_taint = {magic_gettaint,magic_settaint,
463ee0b2 1954 0, 0, 0};
4633a7c4 1955EXT MGVTBL vtbl_substr = {0, magic_setsubstr,
463ee0b2 1956 0, 0, 0};
4633a7c4 1957EXT MGVTBL vtbl_vec = {0, magic_setvec,
463ee0b2 1958 0, 0, 0};
4633a7c4 1959EXT MGVTBL vtbl_pos = {magic_getpos,
a0d0e21e
LW		 1960 magic_setpos,
1961 0, 0, 0};
4633a7c4 1962EXT MGVTBL vtbl_bm = {0, magic_setbm,
463ee0b2 1963 0, 0, 0};
55497cff 1964EXT MGVTBL vtbl_fm = {0, magic_setfm,
1965 0, 0, 0};
4633a7c4 1966EXT MGVTBL vtbl_uvar = {magic_getuvar,
463ee0b2
LW		 1967 magic_setuvar,
1968 0, 0, 0};
68dc0745 1969EXT MGVTBL vtbl_defelem = {magic_getdefelem,magic_setdefelem,
1970 0, 0, magic_freedefelem};
a0d0e21e 1971
36477c24 1972#ifdef USE_LOCALE_COLLATE
bbce6d69 1973EXT MGVTBL vtbl_collxfrm = {0,
1974 magic_setcollxfrm,
1975 0, 0, 0};
1976#endif
1977
a0d0e21e 1978#ifdef OVERLOAD
4633a7c4 1979EXT MGVTBL vtbl_amagic = {0, magic_setamagic,
748a9306 1980 0, 0, magic_setamagic};
4633a7c4 1981EXT MGVTBL vtbl_amagicelem = {0, magic_setamagic,
748a9306 1982 0, 0, magic_setamagic};
a0d0e21e
LW		 1983#endif /* OVERLOAD */
1984
bbce6d69 1985#else /* !DOINIT */
1986
79072805
LW		 1987EXT MGVTBL vtbl_sv;
1988EXT MGVTBL vtbl_env;
1989EXT MGVTBL vtbl_envelem;
1990EXT MGVTBL vtbl_sig;
1991EXT MGVTBL vtbl_sigelem;
463ee0b2
LW		 1992EXT MGVTBL vtbl_pack;
1993EXT MGVTBL vtbl_packelem;
79072805 1994EXT MGVTBL vtbl_dbline;
463ee0b2
LW		 1995EXT MGVTBL vtbl_isa;
1996EXT MGVTBL vtbl_isaelem;
79072805
LW		 1997EXT MGVTBL vtbl_arylen;
1998EXT MGVTBL vtbl_glob;
93a17b20 1999EXT MGVTBL vtbl_mglob;
99abf803 2000EXT MGVTBL vtbl_nkeys;
463ee0b2 2001EXT MGVTBL vtbl_taint;
79072805
LW		 2002EXT MGVTBL vtbl_substr;
2003EXT MGVTBL vtbl_vec;
a0d0e21e 2004EXT MGVTBL vtbl_pos;
79072805 2005EXT MGVTBL vtbl_bm;
55497cff 2006EXT MGVTBL vtbl_fm;
79072805 2007EXT MGVTBL vtbl_uvar;
68dc0745 2008EXT MGVTBL vtbl_defelem;
a0d0e21e 2009
36477c24 2010#ifdef USE_LOCALE_COLLATE
bbce6d69 2011EXT MGVTBL vtbl_collxfrm;
2012#endif
2013
a0d0e21e
LW		 2014#ifdef OVERLOAD
2015EXT MGVTBL vtbl_amagic;
2016EXT MGVTBL vtbl_amagicelem;
2017#endif /* OVERLOAD */
2018
bbce6d69 2019#endif /* !DOINIT */
85e6fe83 2020
a0d0e21e 2021#ifdef OVERLOAD
c0315cdf 2022
a0d0e21e
LW		 2023EXT long amagic_generation;
2024
a6006777 2025#define NofAMmeth 58
a0d0e21e 2026#ifdef DOINIT
a6006777 2027EXTCONST char * AMG_names[NofAMmeth] = {
2028 "fallback", "abs", /* "fallback" should be the first. */
2029 "bool", "nomethod",
2030 "\"\"", "0+",
2031 "+", "+=",
2032 "-", "-=",
2033 "*", "*=",
2034 "/", "/=",
2035 "%", "%=",
2036 "**", "**=",
2037 "<<", "<<=",
2038 ">>", ">>=",
2039 "&", "&=",
2040 "|", "|=",
2041 "^", "^=",
2042 "<", "<=",
2043 ">", ">=",
2044 "==", "!=",
2045 "<=>", "cmp",
2046 "lt", "le",
2047 "gt", "ge",
2048 "eq", "ne",
2049 "!", "~",
2050 "++", "--",
2051 "atan2", "cos",
2052 "sin", "exp",
2053 "log", "sqrt",
2054 "x", "x=",
2055 ".", ".=",
2056 "=", "neg"
a0d0e21e
LW		 2057};
2058#else
a6006777 2059EXTCONST char * AMG_names[NofAMmeth];
a0d0e21e
LW		 2060#endif /* def INITAMAGIC */
2061
a6006777 2062struct am_table {
a0d0e21e
LW		 2063 long was_ok_sub;
2064 long was_ok_am;
a6006777 2065 U32 flags;
2066 CV* table[NofAMmeth];
a0d0e21e
LW		 2067 long fallback;
2068};
a6006777 2069struct am_table_short {
2070 long was_ok_sub;
2071 long was_ok_am;
2072 U32 flags;
2073};
a0d0e21e 2074typedef struct am_table AMT;
a6006777 2075typedef struct am_table_short AMTS;
a0d0e21e
LW		 2076
2077#define AMGfallNEVER 1
2078#define AMGfallNO 2
2079#define AMGfallYES 3
2080
a6006777 2081#define AMTf_AMAGIC 1
2082#define AMT_AMAGIC(amt) ((amt)->flags & AMTf_AMAGIC)
2083#define AMT_AMAGIC_on(amt) ((amt)->flags |= AMTf_AMAGIC)
2084#define AMT_AMAGIC_off(amt) ((amt)->flags &= ~AMTf_AMAGIC)
2085
a0d0e21e
LW		 2086enum {
2087 fallback_amg, abs_amg,
2088 bool__amg, nomethod_amg,
2089 string_amg, numer_amg,
2090 add_amg, add_ass_amg,
2091 subtr_amg, subtr_ass_amg,
2092 mult_amg, mult_ass_amg,
2093 div_amg, div_ass_amg,
2094 mod_amg, mod_ass_amg,
2095 pow_amg, pow_ass_amg,
2096 lshift_amg, lshift_ass_amg,
2097 rshift_amg, rshift_ass_amg,
748a9306
LW		 2098 band_amg, band_ass_amg,
2099 bor_amg, bor_ass_amg,
2100 bxor_amg, bxor_ass_amg,
a0d0e21e
LW		 2101 lt_amg, le_amg,
2102 gt_amg, ge_amg,
2103 eq_amg, ne_amg,
2104 ncmp_amg, scmp_amg,
2105 slt_amg, sle_amg,
2106 sgt_amg, sge_amg,
2107 seq_amg, sne_amg,
a0d0e21e
LW		 2108 not_amg, compl_amg,
2109 inc_amg, dec_amg,
2110 atan2_amg, cos_amg,
2111 sin_amg, exp_amg,
2112 log_amg, sqrt_amg,
2113 repeat_amg, repeat_ass_amg,
748a9306
LW		 2114 concat_amg, concat_ass_amg,
2115 copy_amg, neg_amg
a0d0e21e 2116};
c0315cdf
JH		 2117
2118/*
2119 * some compilers like to redefine cos et alia as faster
2120 * (and less accurate?) versions called F_cos et cetera (Quidquid
2121 * latine dictum sit, altum viditur.) This trick collides with
2122 * the Perl overloading (amg). The following #defines fool both.
2123 */
2124
2125#ifdef _FASTMATH
2126# ifdef atan2
2127# define F_atan2_amg atan2_amg
2128# endif
2129# ifdef cos
2130# define F_cos_amg cos_amg
2131# endif
2132# ifdef exp
2133# define F_exp_amg exp_amg
2134# endif
2135# ifdef log
2136# define F_log_amg log_amg
2137# endif
2138# ifdef pow
2139# define F_pow_amg pow_amg
2140# endif
2141# ifdef sin
2142# define F_sin_amg sin_amg
2143# endif
2144# ifdef sqrt
2145# define F_sqrt_amg sqrt_amg
2146# endif
2147#endif /* _FASTMATH */
2148
a0d0e21e 2149#endif /* OVERLOAD */
36477c24 2150
2151#ifdef USE_LOCALE_COLLATE
bbce6d69 2152EXT U32 collation_ix; /* Collation generation index */
2153EXT char * collation_name; /* Name of current collation */
2154EXT bool collation_standard INIT(TRUE); /* Assume simple collation */
2155EXT Size_t collxfrm_base; /* Basic overhead in *xfrm() */
2156EXT Size_t collxfrm_mult INIT(2); /* Expansion factor in *xfrm() */
36477c24 2157#endif /* USE_LOCALE_COLLATE */
bbce6d69 2158
36477c24 2159#ifdef USE_LOCALE_NUMERIC
bbce6d69 2160
2161EXT char * numeric_name; /* Name of current numeric locale */
2162EXT bool numeric_standard INIT(TRUE); /* Assume simple numerics */
2163EXT bool numeric_local INIT(TRUE); /* Assume local numerics */
2164
36477c24 2165#define SET_NUMERIC_STANDARD() \
2166 STMT_START { \
2167 if (! numeric_standard) \
2168 perl_set_numeric_standard(); \
2169 } STMT_END
2170
2171#define SET_NUMERIC_LOCAL() \
2172 STMT_START { \
2173 if (! numeric_local) \
2174 perl_set_numeric_local(); \
2175 } STMT_END
bbce6d69 2176
36477c24 2177#else /* !USE_LOCALE_NUMERIC */
bbce6d69 2178
36477c24 2179#define SET_NUMERIC_STANDARD() /**/
2180#define SET_NUMERIC_LOCAL() /**/
bbce6d69 2181
36477c24 2182#endif /* !USE_LOCALE_NUMERIC */
a0d0e21e 2183
760ac839
LW		 2184#if !defined(PERLIO_IS_STDIO) && defined(HAS_ATTRIBUTE)
2185/*
2186 * Now we have __attribute__ out of the way
2187 * Remap printf
2188 */
2189#define printf PerlIO_stdoutf
2190#endif
2191
85e6fe83 2192#endif /* Include guard */
a6e633de 2193
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