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Patch for perl.pod
[perl5.git] / perl.h
CommitLineData
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))
40# if defined(__GNUC__) && !defined(__STRICT_ANSI__)
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
1e422769 263#if _XOPEN_VERSION >= 4
264# define Sock_size_t Size_t
265#else
266# define Sock_size_t int
267#endif
268
ff68c719 269#if defined(STANDARD_C) && defined(I_STDDEF)
270# include <stddef.h>
71be2cbc 271# define STRUCT_OFFSET(s,m) offsetof(s,m)
ff68c719 272#else
71be2cbc 273# define STRUCT_OFFSET(s,m) (Size_t)(&(((s *)0)->m))
ff68c719 274#endif
275
a0d0e21e
LW		 276#if defined(I_STRING) || defined(__cplusplus)
277# include <string.h>
278#else
279# include <strings.h>
280#endif
281
282#if !defined(HAS_STRCHR) && defined(HAS_INDEX) && !defined(strchr)
283#define strchr index
284#define strrchr rindex
285#endif
286
16d20bd9
AD		 287#ifdef I_MEMORY
288# include <memory.h>
289#endif
290
fe14fcc3 291#ifdef HAS_MEMCPY
85e6fe83 292# if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
fe14fcc3 293# ifndef memcpy
a0d0e21e 294 extern char * memcpy _((char*, char*, int));
ee0007ab
LW		 295# endif
296# endif
297#else
298# ifndef memcpy
299# ifdef HAS_BCOPY
300# define memcpy(d,s,l) bcopy(s,d,l)
301# else
302# define memcpy(d,s,l) my_bcopy(s,d,l)
303# endif
304# endif
305#endif /* HAS_MEMCPY */
fe14fcc3 306
ee0007ab 307#ifdef HAS_MEMSET
85e6fe83 308# if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
ee0007ab 309# ifndef memset
a0d0e21e 310 extern char *memset _((char*, int, int));
ee0007ab
LW		 311# endif
312# endif
313# define memzero(d,l) memset(d,0,l)
314#else
315# ifndef memzero
316# ifdef HAS_BZERO
317# define memzero(d,l) bzero(d,l)
318# else
319# define memzero(d,l) my_bzero(d,l)
320# endif
352d5a3a 321# endif
ee0007ab
LW		 322#endif /* HAS_MEMSET */
323
85e6fe83 324#if !defined(HAS_MEMMOVE) && !defined(memmove)
2304df62 325# if defined(HAS_BCOPY) && defined(HAS_SAFE_BCOPY)
79072805
LW		 326# define memmove(d,s,l) bcopy(s,d,l)
327# else
2304df62 328# if defined(HAS_MEMCPY) && defined(HAS_SAFE_MEMCPY)
79072805
LW		 329# define memmove(d,s,l) memcpy(d,s,l)
330# else
331# define memmove(d,s,l) my_bcopy(s,d,l)
332# endif
333# endif
d9d8d8de 334#endif
378cc40b 335
36477c24 336#if defined(mips) && defined(ultrix) && !defined(__STDC__)
337# undef HAS_MEMCMP
338#endif
339
340#if defined(HAS_MEMCMP) && defined(HAS_SANE_MEMCMP)
341# if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
342# ifndef memcmp
343 extern int memcmp _((char*, char*, int));
344# endif
345# endif
346# ifdef BUGGY_MSC
347 # pragma function(memcmp)
348# endif
349#else
350# ifndef memcmp
351# define memcmp my_memcmp
352# endif
353#endif /* HAS_MEMCMP && HAS_SANE_MEMCMP */
354
355#ifndef HAS_BCMP
356# ifndef bcmp
357# define bcmp(s1,s2,l) memcmp(s1,s2,l)
358# endif
359#endif /* !HAS_BCMP */
360
ae986130 361#ifdef I_NETINET_IN
79072805 362# include <netinet/in.h>
ae986130
LW		 363#endif
364
1aef975c 365#ifdef I_SYS_STAT
8d063cd8 366#include <sys/stat.h>
1aef975c 367#endif
79072805 368
a0d0e21e
LW		 369/* The stat macros for Amdahl UTS, Unisoft System V/88 (and derivatives
370 like UTekV) are broken, sometimes giving false positives. Undefine
371 them here and let the code below set them to proper values.
372
373 The ghs macro stands for GreenHills Software C-1.8.5 which
374 is the C compiler for sysV88 and the various derivatives.
375 This header file bug is corrected in gcc-2.5.8 and later versions.
376 --Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94. */
377
378#if defined(uts) || (defined(m88k) && defined(ghs))
79072805
LW		 379# undef S_ISDIR
380# undef S_ISCHR
381# undef S_ISBLK
382# undef S_ISREG
383# undef S_ISFIFO
384# undef S_ISLNK
ee0007ab 385#endif
135863df 386
663a0e37
LW		 387#ifdef I_TIME
388# include <time.h>
ffed7fef 389#endif
663a0e37 390
fe14fcc3 391#ifdef I_SYS_TIME
85e6fe83 392# ifdef I_SYS_TIME_KERNEL
663a0e37
LW		 393# define KERNEL
394# endif
395# include <sys/time.h>
85e6fe83 396# ifdef I_SYS_TIME_KERNEL
663a0e37
LW		 397# undef KERNEL
398# endif
a687059c 399#endif
135863df 400
55497cff 401#if defined(HAS_TIMES) && defined(I_SYS_TIMES)
85e6fe83 402# include <sys/times.h>
d9d8d8de 403#endif
8d063cd8 404
fe14fcc3 405#if defined(HAS_STRERROR) && (!defined(HAS_MKDIR) || !defined(HAS_RMDIR))
79072805 406# undef HAS_STRERROR
663a0e37
LW		 407#endif
408
a0d0e21e
LW		 409#ifndef HAS_MKFIFO
410# ifndef mkfifo
411# define mkfifo(path, mode) (mknod((path), (mode) | S_IFIFO, 0))
412# endif
413#endif /* !HAS_MKFIFO */
414
663a0e37 415#include <errno.h>
ed6116ce 416#ifdef HAS_SOCKET
85e6fe83 417# ifdef I_NET_ERRNO
ed6116ce
LW		 418# include <net/errno.h>
419# endif
420#endif
f86702cc 421
422#ifdef VMS
423# define SETERRNO(errcode,vmserrcode) \
424 STMT_START { \
425 set_errno(errcode); \
426 set_vaxc_errno(vmserrcode); \
427 } STMT_END
748a9306 428#else
f86702cc 429# define SETERRNO(errcode,vmserrcode) errno = (errcode)
748a9306 430#endif
ed6116ce 431
55497cff 432#ifndef errno
79072805 433 extern int errno; /* ANSI allows errno to be an lvalue expr */
d9d8d8de 434#endif
663a0e37 435
2304df62 436#ifdef HAS_STRERROR
a0d0e21e
LW		 437# ifdef VMS
438 char *strerror _((int,...));
439# else
68dc0745 440#ifndef DONT_DECLARE_STD
a0d0e21e 441 char *strerror _((int));
68dc0745 442#endif
a0d0e21e 443# endif
2304df62
AD		 444# ifndef Strerror
445# define Strerror strerror
446# endif
447#else
448# ifdef HAS_SYS_ERRLIST
79072805
LW		 449 extern int sys_nerr;
450 extern char *sys_errlist[];
2304df62
AD		 451# ifndef Strerror
452# define Strerror(e) \
79072805 453 ((e) < 0 || (e) >= sys_nerr ? "(unknown)" : sys_errlist[e])
2304df62 454# endif
79072805 455# endif
35c8bce7 456#endif
663a0e37 457
2304df62 458#ifdef I_SYS_IOCTL
79072805
LW		 459# ifndef _IOCTL_
460# include <sys/ioctl.h>
461# endif
a687059c
LW		 462#endif
463
ee0007ab 464#if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
79072805
LW		 465# ifdef HAS_SOCKETPAIR
466# undef HAS_SOCKETPAIR
467# endif
2304df62
AD		 468# ifdef I_NDBM
469# undef I_NDBM
79072805 470# endif
a687059c
LW		 471#endif
472
a687059c 473#if INTSIZE == 2
79072805
LW		 474# define htoni htons
475# define ntohi ntohs
a687059c 476#else
79072805
LW		 477# define htoni htonl
478# define ntohi ntohl
a687059c
LW		 479#endif
480
a0d0e21e 481/* Configure already sets Direntry_t */
35c8bce7 482#if defined(I_DIRENT)
663a0e37 483# include <dirent.h>
a0d0e21e
LW		 484# if defined(NeXT) && defined(I_SYS_DIR) /* NeXT needs dirent + sys/dir.h */
485# include <sys/dir.h>
486# endif
ae986130 487#else
fe14fcc3 488# ifdef I_SYS_NDIR
79a0689e 489# include <sys/ndir.h>
663a0e37 490# else
fe14fcc3 491# ifdef I_SYS_DIR
79a0689e
LW		 492# ifdef hp9000s500
493# include <ndir.h> /* may be wrong in the future */
494# else
495# include <sys/dir.h>
496# endif
663a0e37
LW		 497# endif
498# endif
4633a7c4 499#endif
a687059c 500
352d5a3a
LW		 501#ifdef FPUTS_BOTCH
502/* work around botch in SunOS 4.0.1 and 4.0.2 */
503# ifndef fputs
79072805 504# define fputs(sv,fp) fprintf(fp,"%s",sv)
352d5a3a
LW		 505# endif
506#endif
507
c623bd54
LW		 508/*
509 * The following gobbledygook brought to you on behalf of __STDC__.
510 * (I could just use #ifndef __STDC__, but this is more bulletproof
511 * in the face of half-implementations.)
512 */
513
514#ifndef S_IFMT
515# ifdef _S_IFMT
516# define S_IFMT _S_IFMT
517# else
518# define S_IFMT 0170000
519# endif
520#endif
521
522#ifndef S_ISDIR
523# define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
524#endif
525
526#ifndef S_ISCHR
527# define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
528#endif
529
530#ifndef S_ISBLK
fe14fcc3
LW		 531# ifdef S_IFBLK
532# define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
533# else
534# define S_ISBLK(m) (0)
535# endif
c623bd54
LW		 536#endif
537
538#ifndef S_ISREG
539# define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
540#endif
541
542#ifndef S_ISFIFO
fe14fcc3
LW		 543# ifdef S_IFIFO
544# define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
545# else
546# define S_ISFIFO(m) (0)
547# endif
c623bd54
LW		 548#endif
549
550#ifndef S_ISLNK
551# ifdef _S_ISLNK
552# define S_ISLNK(m) _S_ISLNK(m)
553# else
554# ifdef _S_IFLNK
555# define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
556# else
557# ifdef S_IFLNK
558# define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
559# else
560# define S_ISLNK(m) (0)
561# endif
562# endif
563# endif
564#endif
565
566#ifndef S_ISSOCK
567# ifdef _S_ISSOCK
568# define S_ISSOCK(m) _S_ISSOCK(m)
569# else
570# ifdef _S_IFSOCK
571# define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
572# else
573# ifdef S_IFSOCK
574# define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
575# else
576# define S_ISSOCK(m) (0)
577# endif
578# endif
579# endif
580#endif
581
582#ifndef S_IRUSR
583# ifdef S_IREAD
584# define S_IRUSR S_IREAD
585# define S_IWUSR S_IWRITE
586# define S_IXUSR S_IEXEC
587# else
588# define S_IRUSR 0400
589# define S_IWUSR 0200
590# define S_IXUSR 0100
591# endif
592# define S_IRGRP (S_IRUSR>>3)
593# define S_IWGRP (S_IWUSR>>3)
594# define S_IXGRP (S_IXUSR>>3)
595# define S_IROTH (S_IRUSR>>6)
596# define S_IWOTH (S_IWUSR>>6)
597# define S_IXOTH (S_IXUSR>>6)
598#endif
599
600#ifndef S_ISUID
601# define S_ISUID 04000
602#endif
603
604#ifndef S_ISGID
605# define S_ISGID 02000
606#endif
607
79072805
LW		 608#ifdef ff_next
609# undef ff_next
352d5a3a
LW		 610#endif
611
a0d0e21e 612#if defined(cray) || defined(gould) || defined(i860) || defined(pyr)
45d8adaa
LW		 613# define SLOPPYDIVIDE
614#endif
615
748a9306
LW		 616#ifdef UV
617#undef UV
618#endif
619
27d4fb96 620/* XXX QUAD stuff is not currently supported on most systems.
621 Specifically, perl internals don't support long long. Among
622 the many problems is that some compilers support long long,
623 but the underlying library functions (such as sprintf) don't.
624 Some things do work (such as quad pack/unpack on convex);
625 also some systems use long long for the fpos_t typedef. That
626 seems to work too.
627
628 The IV type is supposed to be long enough to hold any integral
629 value or a pointer.
630 --Andy Dougherty August 1996
631*/
632
f86702cc 633#ifdef cray
634# define Quad_t int
635#else
636# ifdef convex
637# define Quad_t long long
45d8adaa 638# else
ff0cee69 639# if BYTEORDER > 0xFFFF
640# define Quad_t long
45d8adaa
LW		 641# endif
642# endif
f86702cc 643#endif
644
645#ifdef Quad_t
646# define HAS_QUAD
748a9306
LW		 647 typedef Quad_t IV;
648 typedef unsigned Quad_t UV;
27d4fb96 649# define IV_MAX PERL_QUAD_MAX
650# define IV_MIN PERL_QUAD_MIN
651# define UV_MAX PERL_UQUAD_MAX
652# define UV_MIN PERL_UQUAD_MIN
79072805 653#else
748a9306
LW		 654 typedef long IV;
655 typedef unsigned long UV;
27d4fb96 656# define IV_MAX PERL_LONG_MAX
657# define IV_MIN PERL_LONG_MIN
658# define UV_MAX PERL_ULONG_MAX
659# define UV_MIN PERL_ULONG_MIN
79072805
LW		 660#endif
661
760ac839
LW		 662/* Previously these definitions used hardcoded figures.
663 * It is hoped these formula are more portable, although
664 * no data one way or another is presently known to me.
665 * The "PERL_" names are used because these calculated constants
666 * do not meet the ANSI requirements for LONG_MAX, etc., which
667 * need to be constants acceptable to #if - kja
668 * define PERL_LONG_MAX 2147483647L
669 * define PERL_LONG_MIN (-LONG_MAX - 1)
670 * define PERL ULONG_MAX 4294967295L
671 */
672
673#ifdef I_LIMITS /* Needed for cast_xxx() functions below. */
674# include <limits.h>
675#else
676#ifdef I_VALUES
677# include <values.h>
678#endif
679#endif
680
99abf803 681/*
682 * Try to figure out max and min values for the integral types. THE CORRECT
683 * SOLUTION TO THIS MESS: ADAPT enquire.c FROM GCC INTO CONFIGURE. The
684 * following hacks are used if neither limits.h or values.h provide them:
685 * U<TYPE>_MAX: for types >= int: ~(unsigned TYPE)0
686 * for types < int: (unsigned TYPE)~(unsigned)0
687 * The argument to ~ must be unsigned so that later signed->unsigned
688 * conversion can't modify the value's bit pattern (e.g. -0 -> +0),
689 * and it must not be smaller than int because ~ does integral promotion.
690 * <type>_MAX: (<type>) (U<type>_MAX >> 1)
691 * <type>_MIN: -<type>_MAX - <is_twos_complement_architecture: (3 & -1) == 3>.
692 * The latter is a hack which happens to work on some machines but
693 * does *not* catch any random system, or things like integer types
694 * with NaN if that is possible.
695 *
696 * All of the types are explicitly cast to prevent accidental loss of
697 * numeric range, and in the hope that they will be less likely to confuse
698 * over-eager optimizers.
699 *
700 */
27d4fb96 701
99abf803 702#define PERL_UCHAR_MIN ((unsigned char)0)
703
704#ifdef UCHAR_MAX
705# define PERL_UCHAR_MAX ((unsigned char)UCHAR_MAX)
27d4fb96 706#else
99abf803 707# ifdef MAXUCHAR
708# define PERL_UCHAR_MAX ((unsigned char)MAXUCHAR)
27d4fb96 709# else
99abf803 710# define PERL_UCHAR_MAX ((unsigned char)~(unsigned)0)
27d4fb96 711# endif
712#endif
99abf803 713
714/*
715 * CHAR_MIN and CHAR_MAX are not included here, as the (char) type may be
716 * ambiguous. It may be equivalent to (signed char) or (unsigned char)
717 * depending on local options. Until Configure detects this (or at least
718 * detects whether the "signed" keyword is available) the CHAR ranges
719 * will not be included. UCHAR functions normally.
720 * - kja
721 */
27d4fb96 722
99abf803 723#define PERL_USHORT_MIN ((unsigned short)0)
724
725#ifdef USHORT_MAX
726# define PERL_USHORT_MAX ((unsigned short)USHORT_MAX)
27d4fb96 727#else
99abf803 728# ifdef MAXUSHORT
729# define PERL_USHORT_MAX ((unsigned short)MAXUSHORT)
27d4fb96 730# else
99abf803 731# define PERL_USHORT_MAX ((unsigned short)~(unsigned)0)
27d4fb96 732# endif
733#endif
734
27d4fb96 735#ifdef SHORT_MAX
99abf803 736# define PERL_SHORT_MAX ((short)SHORT_MAX)
27d4fb96 737#else
738# ifdef MAXSHORT /* Often used in <values.h> */
99abf803 739# define PERL_SHORT_MAX ((short)MAXSHORT)
27d4fb96 740# else
99abf803 741# define PERL_SHORT_MAX ((short) (PERL_USHORT_MAX >> 1))
27d4fb96 742# endif
743#endif
744
745#ifdef SHORT_MIN
99abf803 746# define PERL_SHORT_MIN ((short)SHORT_MIN)
27d4fb96 747#else
748# ifdef MINSHORT
99abf803 749# define PERL_SHORT_MIN ((short)MINSHORT)
27d4fb96 750# else
751# define PERL_SHORT_MIN (-PERL_SHORT_MAX - ((3 & -1) == 3))
752# endif
753#endif
754
99abf803 755#ifdef UINT_MAX
756# define PERL_UINT_MAX ((unsigned int)UINT_MAX)
27d4fb96 757#else
99abf803 758# ifdef MAXUINT
759# define PERL_UINT_MAX ((unsigned int)MAXUINT)
27d4fb96 760# else
99abf803 761# define PERL_UINT_MAX (~(unsigned int)0)
27d4fb96 762# endif
763#endif
764
99abf803 765#define PERL_UINT_MIN ((unsigned int)0)
27d4fb96 766
767#ifdef INT_MAX
99abf803 768# define PERL_INT_MAX ((int)INT_MAX)
27d4fb96 769#else
770# ifdef MAXINT /* Often used in <values.h> */
99abf803 771# define PERL_INT_MAX ((int)MAXINT)
27d4fb96 772# else
99abf803 773# define PERL_INT_MAX ((int)(PERL_UINT_MAX >> 1))
27d4fb96 774# endif
775#endif
776
777#ifdef INT_MIN
99abf803 778# define PERL_INT_MIN ((int)INT_MIN)
27d4fb96 779#else
780# ifdef MININT
99abf803 781# define PERL_INT_MIN ((int)MININT)
27d4fb96 782# else
783# define PERL_INT_MIN (-PERL_INT_MAX - ((3 & -1) == 3))
784# endif
785#endif
786
99abf803 787#ifdef ULONG_MAX
788# define PERL_ULONG_MAX ((unsigned long)ULONG_MAX)
27d4fb96 789#else
99abf803 790# ifdef MAXULONG
791# define PERL_ULONG_MAX ((unsigned long)MAXULONG)
27d4fb96 792# else
99abf803 793# define PERL_ULONG_MAX (~(unsigned long)0)
27d4fb96 794# endif
795#endif
796
99abf803 797#define PERL_ULONG_MIN ((unsigned long)0L)
27d4fb96 798
760ac839 799#ifdef LONG_MAX
99abf803 800# define PERL_LONG_MAX ((long)LONG_MAX)
760ac839
LW		 801#else
802# ifdef MAXLONG /* Often used in <values.h> */
99abf803 803# define PERL_LONG_MAX ((long)MAXLONG)
760ac839 804# else
99abf803 805# define PERL_LONG_MAX ((long) (PERL_ULONG_MAX >> 1))
760ac839
LW		 806# endif
807#endif
808
809#ifdef LONG_MIN
99abf803 810# define PERL_LONG_MIN ((long)LONG_MIN)
760ac839
LW		 811#else
812# ifdef MINLONG
99abf803 813# define PERL_LONG_MIN ((long)MINLONG)
760ac839 814# else
27d4fb96 815# define PERL_LONG_MIN (-PERL_LONG_MAX - ((3 & -1) == 3))
760ac839
LW		 816# endif
817#endif
818
99abf803 819#ifdef HAS_QUAD
820
821# ifdef UQUAD_MAX
822# define PERL_UQUAD_MAX ((UV)UQUAD_MAX)
760ac839 823# else
99abf803 824# define PERL_UQUAD_MAX (~(UV)0)
760ac839 825# endif
760ac839 826
99abf803 827# define PERL_UQUAD_MIN ((UV)0)
27d4fb96 828
27d4fb96 829# ifdef QUAD_MAX
99abf803 830# define PERL_QUAD_MAX ((IV)QUAD_MAX)
27d4fb96 831# else
99abf803 832# define PERL_QUAD_MAX ((IV) (PERL_UQUAD_MAX >> 1))
27d4fb96 833# endif
834
835# ifdef QUAD_MIN
99abf803 836# define PERL_QUAD_MIN ((IV)QUAD_MIN)
27d4fb96 837# else
a6e633de 838# define PERL_QUAD_MIN (-PERL_QUAD_MAX - ((3 & -1) == 3))
27d4fb96 839# endif
840
760ac839
LW		 841#endif
842
ee0007ab 843typedef MEM_SIZE STRLEN;
450a55e4 844
79072805
LW		 845typedef struct op OP;
846typedef struct cop COP;
847typedef struct unop UNOP;
848typedef struct binop BINOP;
849typedef struct listop LISTOP;
850typedef struct logop LOGOP;
851typedef struct condop CONDOP;
852typedef struct pmop PMOP;
853typedef struct svop SVOP;
854typedef struct gvop GVOP;
855typedef struct pvop PVOP;
79072805
LW		 856typedef struct loop LOOP;
857
858typedef struct Outrec Outrec;
93a17b20 859typedef struct interpreter PerlInterpreter;
79072805 860typedef struct ff FF;
79072805
LW		 861typedef struct sv SV;
862typedef struct av AV;
863typedef struct hv HV;
864typedef struct cv CV;
378cc40b 865typedef struct regexp REGEXP;
79072805 866typedef struct gp GP;
0c30d9ec 867typedef struct gv GV;
8990e307 868typedef struct io IO;
79072805
LW		 869typedef struct context CONTEXT;
870typedef struct block BLOCK;
871
872typedef struct magic MAGIC;
ed6116ce 873typedef struct xrv XRV;
79072805
LW		 874typedef struct xpv XPV;
875typedef struct xpviv XPVIV;
ff68c719 876typedef struct xpvuv XPVUV;
79072805
LW		 877typedef struct xpvnv XPVNV;
878typedef struct xpvmg XPVMG;
879typedef struct xpvlv XPVLV;
880typedef struct xpvav XPVAV;
881typedef struct xpvhv XPVHV;
882typedef struct xpvgv XPVGV;
883typedef struct xpvcv XPVCV;
884typedef struct xpvbm XPVBM;
885typedef struct xpvfm XPVFM;
8990e307 886typedef struct xpvio XPVIO;
79072805
LW		 887typedef struct mgvtbl MGVTBL;
888typedef union any ANY;
8d063cd8 889
378cc40b 890#include "handy.h"
a0d0e21e 891
16d20bd9
AD		 892typedef I32 (*filter_t) _((int, SV *, int));
893#define FILTER_READ(idx, sv, len) filter_read(idx, sv, len)
894#define FILTER_DATA(idx) (AvARRAY(rsfp_filters)[idx])
895#define FILTER_ISREADER(idx) (idx >= AvFILL(rsfp_filters))
896
748a9306 897#ifdef DOSISH
4633a7c4
LW		 898# if defined(OS2)
899# include "os2ish.h"
900# else
748a9306 901# include "dosish.h"
4633a7c4 902# endif
a0d0e21e 903#else
748a9306
LW		 904# if defined(VMS)
905# include "vmsish.h"
906# else
0c30d9ec 907# if defined(PLAN9)
908# include "./plan9/plan9ish.h"
909# else
910# include "unixish.h"
911# endif
748a9306
LW		 912# endif
913#endif
3fc1aec6 914
68dc0745 915#ifdef VMS
916# define STATUS_NATIVE statusvalue_vms
917# define STATUS_NATIVE_EXPORT \
918 ((I32)statusvalue_vms == -1 ? 44 : statusvalue_vms)
919# define STATUS_NATIVE_SET(n) \
920 STMT_START { \
921 statusvalue_vms = (n); \
922 if ((I32)statusvalue_vms == -1) \
923 statusvalue = -1; \
924 else if (statusvalue_vms & STS$M_SUCCESS) \
925 statusvalue = 0; \
926 else if ((statusvalue_vms & STS$M_SEVERITY) == 0) \
927 statusvalue = 1 << 8; \
928 else \
929 statusvalue = (statusvalue_vms & STS$M_SEVERITY) << 8; \
930 } STMT_END
931# define STATUS_POSIX statusvalue
932# ifdef VMSISH_STATUS
933# define STATUS_CURRENT (VMSISH_STATUS ? STATUS_NATIVE : STATUS_POSIX)
934# else
935# define STATUS_CURRENT STATUS_POSIX
936# endif
937# define STATUS_POSIX_SET(n) \
938 STMT_START { \
939 statusvalue = (n); \
940 if (statusvalue != -1) { \
941 statusvalue &= 0xFFFF; \
942 statusvalue_vms = statusvalue ? 44 : 1; \
943 } \
944 else statusvalue_vms = -1; \
945 } STMT_END
946# define STATUS_ALL_SUCCESS (statusvalue = 0, statusvalue_vms = 1)
947# define STATUS_ALL_FAILURE (statusvalue = 1, statusvalue_vms = 44)
948#else
949# define STATUS_NATIVE STATUS_POSIX
950# define STATUS_NATIVE_EXPORT STATUS_POSIX
951# define STATUS_NATIVE_SET STATUS_POSIX_SET
952# define STATUS_POSIX statusvalue
953# define STATUS_POSIX_SET(n) \
954 STMT_START { \
955 statusvalue = (n); \
956 if (statusvalue != -1) \
957 statusvalue &= 0xFFFF; \
958 } STMT_END
959# define STATUS_CURRENT STATUS_POSIX
960# define STATUS_ALL_SUCCESS (statusvalue = 0)
961# define STATUS_ALL_FAILURE (statusvalue = 1)
962#endif
963
3fc1aec6 964/* Some unistd.h's give a prototype for pause() even though
965 HAS_PAUSE ends up undefined. This causes the #define
966 below to be rejected by the compmiler. Sigh.
967*/
968#ifdef HAS_PAUSE
969#define Pause pause
970#else
971#define Pause() sleep((32767<<16)+32767)
748a9306
LW		 972#endif
973
974#ifndef IOCPARM_LEN
975# ifdef IOCPARM_MASK
976 /* on BSDish systes we're safe */
977# define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
978# else
979 /* otherwise guess at what's safe */
980# define IOCPARM_LEN(x) 256
981# endif
a0d0e21e
LW		 982#endif
983
79072805
LW		 984union any {
985 void* any_ptr;
986 I32 any_i32;
a0d0e21e 987 IV any_iv;
85e6fe83 988 long any_long;
a0d0e21e 989 void (*any_dptr) _((void*));
79072805
LW		 990};
991
378cc40b 992#include "regexp.h"
79072805 993#include "sv.h"
378cc40b 994#include "util.h"
8d063cd8 995#include "form.h"
79072805
LW		 996#include "gv.h"
997#include "cv.h"
998#include "opcode.h"
999#include "op.h"
1000#include "cop.h"
1001#include "av.h"
1002#include "hv.h"
1003#include "mg.h"
1004#include "scope.h"
8d063cd8 1005
4633a7c4
LW		 1006/* work around some libPW problems */
1007#ifdef DOINIT
1008EXT char Error[1];
1009#endif
1010
450a55e4 1011#if defined(iAPX286) || defined(M_I286) || defined(I80286)
a687059c
LW		 1012# define I286
1013#endif
1014
fe14fcc3
LW		 1015#if defined(htonl) && !defined(HAS_HTONL)
1016#define HAS_HTONL
ae986130 1017#endif
fe14fcc3
LW		 1018#if defined(htons) && !defined(HAS_HTONS)
1019#define HAS_HTONS
ae986130 1020#endif
fe14fcc3
LW		 1021#if defined(ntohl) && !defined(HAS_NTOHL)
1022#define HAS_NTOHL
ae986130 1023#endif
fe14fcc3
LW		 1024#if defined(ntohs) && !defined(HAS_NTOHS)
1025#define HAS_NTOHS
ae986130 1026#endif
fe14fcc3 1027#ifndef HAS_HTONL
d9d8d8de 1028#if (BYTEORDER & 0xffff) != 0x4321
fe14fcc3
LW		 1029#define HAS_HTONS
1030#define HAS_HTONL
1031#define HAS_NTOHS
1032#define HAS_NTOHL
a687059c
LW		 1033#define MYSWAP
1034#define htons my_swap
1035#define htonl my_htonl
1036#define ntohs my_swap
1037#define ntohl my_ntohl
1038#endif
1039#else
d9d8d8de 1040#if (BYTEORDER & 0xffff) == 0x4321
fe14fcc3
LW		 1041#undef HAS_HTONS
1042#undef HAS_HTONL
1043#undef HAS_NTOHS
1044#undef HAS_NTOHL
a687059c
LW		 1045#endif
1046#endif
1047
988174c1
LW		 1048/*
1049 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1050 * -DWS
1051 */
1052#if BYTEORDER != 0x1234
1053# define HAS_VTOHL
1054# define HAS_VTOHS
1055# define HAS_HTOVL
1056# define HAS_HTOVS
1057# if BYTEORDER == 0x4321
1058# define vtohl(x) ((((x)&0xFF)<<24) \
1059 +(((x)>>24)&0xFF) \
1060 +(((x)&0x0000FF00)<<8) \
1061 +(((x)&0x00FF0000)>>8) )
1062# define vtohs(x) ((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
1063# define htovl(x) vtohl(x)
1064# define htovs(x) vtohs(x)
1065# endif
1066 /* otherwise default to functions in util.c */
1067#endif
1068
0f85fab0 1069#ifdef CASTNEGFLOAT
79072805 1070#define U_S(what) ((U16)(what))
0f85fab0 1071#define U_I(what) ((unsigned int)(what))
79072805 1072#define U_L(what) ((U32)(what))
0f85fab0 1073#else
a6e633de 1074# ifdef __cplusplus
1075 extern "C" {
1076# endif
a0d0e21e 1077U32 cast_ulong _((double));
a6e633de 1078# ifdef __cplusplus
1079 }
1080# endif
232e078e
AD		 1081#define U_S(what) ((U16)cast_ulong((double)(what)))
1082#define U_I(what) ((unsigned int)cast_ulong((double)(what)))
1083#define U_L(what) (cast_ulong((double)(what)))
ee0007ab
LW		 1084#endif
1085
ed6116ce
LW		 1086#ifdef CASTI32
1087#define I_32(what) ((I32)(what))
a0d0e21e 1088#define I_V(what) ((IV)(what))
5d94fbed 1089#define U_V(what) ((UV)(what))
ed6116ce 1090#else
a6e633de 1091# ifdef __cplusplus
1092 extern "C" {
1093# endif
a0d0e21e 1094I32 cast_i32 _((double));
a0d0e21e 1095IV cast_iv _((double));
5d94fbed 1096UV cast_uv _((double));
a6e633de 1097# ifdef __cplusplus
1098 }
1099# endif
1100#define I_32(what) (cast_i32((double)(what)))
1101#define I_V(what) (cast_iv((double)(what)))
5d94fbed 1102#define U_V(what) (cast_uv((double)(what)))
ed6116ce
LW		 1103#endif
1104
79072805
LW		 1105struct Outrec {
1106 I32 o_lines;
d9d8d8de 1107 char *o_str;
79072805 1108 U32 o_len;
8d063cd8
LW		 1109};
1110
352d5a3a
LW		 1111#ifndef MAXSYSFD
1112# define MAXSYSFD 2
1113#endif
ee0007ab 1114
f82b3d41 1115#ifndef TMPPATH
1116# define TMPPATH "/tmp/perl-eXXXXXX"
a0d0e21e 1117#endif
79072805
LW		 1118
1119#ifndef __cplusplus
a0d0e21e
LW		 1120Uid_t getuid _((void));
1121Uid_t geteuid _((void));
1122Gid_t getgid _((void));
1123Gid_t getegid _((void));
79072805 1124#endif
8d063cd8
LW		 1125
1126#ifdef DEBUGGING
0c30d9ec 1127#ifndef Perl_debug_log
760ac839 1128#define Perl_debug_log PerlIO_stderr()
0c30d9ec 1129#endif
d96024cf 1130#define YYDEBUG 1
79072805
LW		 1131#define DEB(a) a
1132#define DEBUG(a) if (debug) a
1133#define DEBUG_p(a) if (debug & 1) a
1134#define DEBUG_s(a) if (debug & 2) a
1135#define DEBUG_l(a) if (debug & 4) a
1136#define DEBUG_t(a) if (debug & 8) a
1137#define DEBUG_o(a) if (debug & 16) a
1138#define DEBUG_c(a) if (debug & 32) a
1139#define DEBUG_P(a) if (debug & 64) a
0c30d9ec 1140#define DEBUG_m(a) if (curinterp && debug & 128) a
79072805
LW		 1141#define DEBUG_f(a) if (debug & 256) a
1142#define DEBUG_r(a) if (debug & 512) a
1143#define DEBUG_x(a) if (debug & 1024) a
1144#define DEBUG_u(a) if (debug & 2048) a
1145#define DEBUG_L(a) if (debug & 4096) a
1146#define DEBUG_H(a) if (debug & 8192) a
1147#define DEBUG_X(a) if (debug & 16384) a
8990e307 1148#define DEBUG_D(a) if (debug & 32768) a
79072805
LW		 1149#else
1150#define DEB(a)
1151#define DEBUG(a)
1152#define DEBUG_p(a)
1153#define DEBUG_s(a)
1154#define DEBUG_l(a)
1155#define DEBUG_t(a)
1156#define DEBUG_o(a)
1157#define DEBUG_c(a)
1158#define DEBUG_P(a)
1159#define DEBUG_m(a)
1160#define DEBUG_f(a)
1161#define DEBUG_r(a)
1162#define DEBUG_x(a)
1163#define DEBUG_u(a)
1164#define DEBUG_L(a)
1165#define DEBUG_H(a)
1166#define DEBUG_X(a)
8990e307 1167#define DEBUG_D(a)
8d063cd8 1168#endif
fe14fcc3 1169#define YYMAXDEPTH 300
8d063cd8 1170
a6e633de 1171#ifndef assert /* <assert.h> might have been included somehow */
79072805
LW		 1172#define assert(what) DEB( { \
1173 if (!(what)) { \
463ee0b2 1174 croak("Assertion failed: file \"%s\", line %d", \
79072805
LW		 1175 __FILE__, __LINE__); \
1176 exit(1); \
1177 }})
a6e633de 1178#endif
8d063cd8 1179
450a55e4 1180struct ufuncs {
a0d0e21e
LW		 1181 I32 (*uf_val)_((IV, SV*));
1182 I32 (*uf_set)_((IV, SV*));
1183 IV uf_index;
450a55e4
LW		 1184};
1185
fe14fcc3 1186/* Fix these up for __STDC__ */
68dc0745 1187#ifndef DONT_DECLARE_STD
a0d0e21e
LW		 1188char *mktemp _((char*));
1189double atof _((const char*));
1190#endif
79072805 1191
352d5a3a 1192#ifndef STANDARD_C
fe14fcc3 1193/* All of these are in stdlib.h or time.h for ANSI C */
85e6fe83 1194Time_t time();
8d063cd8 1195struct tm *gmtime(), *localtime();
93a17b20 1196char *strchr(), *strrchr();
378cc40b 1197char *strcpy(), *strcat();
352d5a3a 1198#endif /* ! STANDARD_C */
8d063cd8 1199
79072805
LW		 1200
1201#ifdef I_MATH
1202# include <math.h>
1203#else
1204# ifdef __cplusplus
1205 extern "C" {
1206# endif
a0d0e21e 1207 double exp _((double));
a0d0e21e
LW		 1208 double log _((double));
1209 double sqrt _((double));
1210 double modf _((double,double*));
1211 double sin _((double));
1212 double cos _((double));
1213 double atan2 _((double,double));
1214 double pow _((double,double));
79072805
LW		 1215# ifdef __cplusplus
1216 };
1217# endif
1218#endif
1219
a0d0e21e 1220#ifndef __cplusplus
3fc1aec6 1221#ifdef __NeXT__ /* or whatever catches all NeXTs */
1222char *crypt (); /* Maybe more hosts will need the unprototyped version */
1223#else
a0d0e21e 1224char *crypt _((const char*, const char*));
3fc1aec6 1225#endif
68dc0745 1226#ifndef DONT_DECLARE_STD
1e422769 1227#ifndef getenv
a0d0e21e 1228char *getenv _((const char*));
1e422769 1229#endif
a0d0e21e 1230Off_t lseek _((int,Off_t,int));
68dc0745 1231#endif
a0d0e21e
LW		 1232char *getlogin _((void));
1233#endif
79072805 1234
16d20bd9 1235#ifdef UNLINK_ALL_VERSIONS /* Currently only makes sense for VMS */
378cc40b 1236#define UNLINK unlnk
a0d0e21e 1237I32 unlnk _((char*));
8d063cd8
LW		 1238#else
1239#define UNLINK unlink
1240#endif
a687059c 1241
fe14fcc3 1242#ifndef HAS_SETREUID
85e6fe83
LW		 1243# ifdef HAS_SETRESUID
1244# define setreuid(r,e) setresuid(r,e,(Uid_t)-1)
1245# define HAS_SETREUID
1246# endif
a687059c 1247#endif
fe14fcc3 1248#ifndef HAS_SETREGID
85e6fe83
LW		 1249# ifdef HAS_SETRESGID
1250# define setregid(r,e) setresgid(r,e,(Gid_t)-1)
1251# define HAS_SETREGID
1252# endif
a687059c 1253#endif
ee0007ab 1254
ff68c719 1255typedef Signal_t (*Sighandler_t) _((int));
1256
1257#ifdef HAS_SIGACTION
1258typedef struct sigaction Sigsave_t;
1259#else
1260typedef Sighandler_t Sigsave_t;
1261#endif
1262
ee0007ab
LW		 1263#define SCAN_DEF 0
1264#define SCAN_TR 1
1265#define SCAN_REPL 2
79072805
LW		 1266
1267#ifdef DEBUGGING
4633a7c4 1268# ifndef register
a0d0e21e
LW		 1269# define register
1270# endif
55497cff 1271# ifdef MYMALLOC
1272# ifndef DEBUGGING_MSTATS
1273# define DEBUGGING_MSTATS
1274# endif
1275# endif
a0d0e21e 1276# define PAD_SV(po) pad_sv(po)
79072805 1277#else
a0d0e21e 1278# define PAD_SV(po) curpad[po]
79072805
LW		 1279#endif
1280
1281/****************/
1282/* Truly global */
1283/****************/
1284
1285/* global state */
a0d0e21e 1286EXT PerlInterpreter * curinterp; /* currently running interpreter */
0c30d9ec 1287/* VMS doesn't use environ array and NeXT has problems with crt0.o globals */
1288#if !defined(VMS) && !(defined(NeXT) && defined(__DYNAMIC__))
68dc0745 1289#ifndef DONT_DECLARE_STD
79072805 1290extern char ** environ; /* environment variables supplied via exec */
68dc0745 1291#endif
0c30d9ec 1292#else
1293# if defined(NeXT) && defined(__DYNAMIC__)
1294
1295# include <mach-o/dyld.h>
1296EXT char *** environ_pointer;
1297# define environ (*environ_pointer)
1298# endif
1299#endif /* environ processing */
1300
79072805
LW		 1301EXT int uid; /* current real user id */
1302EXT int euid; /* current effective user id */
1303EXT int gid; /* current real group id */
1304EXT int egid; /* current effective group id */
1305EXT bool nomemok; /* let malloc context handle nomem */
1306EXT U32 an; /* malloc sequence number */
463ee0b2 1307EXT U32 cop_seqmax; /* statement sequence number */
c07a80fd 1308EXT U16 op_seqmax; /* op sequence number */
8990e307 1309EXT U32 evalseq; /* eval sequence number */
463ee0b2 1310EXT U32 sub_generation; /* inc to force methods to be looked up again */
79072805
LW		 1311EXT char ** origenviron;
1312EXT U32 origalen;
44a8e56a 1313EXT HV * pidstatus; /* pid-to-status mappings for waitpid */
a0d0e21e 1314EXT U32 * profiledata;
84ea024a 1315EXT int maxo INIT(MAXO);/* Number of ops */
728e2803 1316EXT char * osname; /* operating system */
ff68c719 1317EXT char * sh_path INIT(SH_PATH); /* full path of shell */
79072805 1318
a0d0e21e
LW		 1319EXT XPV* xiv_arenaroot; /* list of allocated xiv areas */
1320EXT IV ** xiv_root; /* free xiv list--shared by interpreters */
8990e307
LW		 1321EXT double * xnv_root; /* free xnv list--shared by interpreters */
1322EXT XRV * xrv_root; /* free xrv list--shared by interpreters */
1323EXT XPV * xpv_root; /* free xpv list--shared by interpreters */
4633a7c4 1324EXT HE * he_root; /* free he list--shared by interpreters */
c07a80fd 1325EXT char * nice_chunk; /* a nice chunk of memory to reuse */
1326EXT U32 nice_chunk_size;/* how nice the chunk of memory is */
8990e307 1327
79072805
LW		 1328/* Stack for currently executing thread--context switch must handle this. */
1329EXT SV ** stack_base; /* stack->array_ary */
1330EXT SV ** stack_sp; /* stack pointer now */
1331EXT SV ** stack_max; /* stack->array_ary + stack->array_max */
1332
1333/* likewise for these */
1334
1335EXT OP * op; /* current op--oughta be in a global register */
1336
1337EXT I32 * scopestack; /* blocks we've entered */
1338EXT I32 scopestack_ix;
1339EXT I32 scopestack_max;
1340
1341EXT ANY* savestack; /* to save non-local values on */
1342EXT I32 savestack_ix;
1343EXT I32 savestack_max;
1344
1345EXT OP ** retstack; /* returns we've pushed */
1346EXT I32 retstack_ix;
1347EXT I32 retstack_max;
1348
1349EXT I32 * markstack; /* stackmarks we're remembering */
1350EXT I32 * markstack_ptr; /* stackmarks we're remembering */
1351EXT I32 * markstack_max; /* stackmarks we're remembering */
1352
1353EXT SV ** curpad;
1354
1355/* temp space */
1356EXT SV * Sv;
1357EXT XPV * Xpv;
f82b3d41 1358EXT char buf[2048]; /* should be longer than PATH_MAX */
79072805
LW		 1359EXT char tokenbuf[256];
1360EXT struct stat statbuf;
ecfc5424 1361#ifdef HAS_TIMES
79072805
LW		 1362EXT struct tms timesbuf;
1363#endif
463ee0b2 1364EXT STRLEN na; /* for use in SvPV when length is Not Applicable */
79072805
LW		 1365
1366/* for tmp use in stupid debuggers */
1367EXT int * di;
1368EXT short * ds;
1369EXT char * dc;
1370
1371/* handy constants */
71be2cbc 1372EXTCONST char * Yes INIT("1");
1373EXTCONST char * No INIT("");
1374EXTCONST char * hexdigit INIT("0123456789abcdef0123456789ABCDEFx");
1375EXTCONST char * patleave INIT("\\.^$@dDwWsSbB+*?|()-nrtfeaxc0123456789[{]}");
1376EXTCONST char * vert INIT("|");
79072805 1377
71be2cbc 1378EXTCONST char warn_uninit[]
a0d0e21e 1379 INIT("Use of uninitialized value");
71be2cbc 1380EXTCONST char warn_nosemi[]
463ee0b2 1381 INIT("Semicolon seems to be missing");
71be2cbc 1382EXTCONST char warn_reserved[]
463ee0b2 1383 INIT("Unquoted string \"%s\" may clash with future reserved word");
71be2cbc 1384EXTCONST char warn_nl[]
93a17b20 1385 INIT("Unsuccessful %s on filename containing newline");
71be2cbc 1386EXTCONST char no_wrongref[]
a0d0e21e 1387 INIT("Can't use %s ref as %s ref");
71be2cbc 1388EXTCONST char no_symref[]
748a9306 1389 INIT("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use");
71be2cbc 1390EXTCONST char no_usym[]
8990e307 1391 INIT("Can't use an undefined value as %s reference");
71be2cbc 1392EXTCONST char no_aelem[]
93a17b20 1393 INIT("Modification of non-creatable array value attempted, subscript %d");
71be2cbc 1394EXTCONST char no_helem[]
93a17b20 1395 INIT("Modification of non-creatable hash value attempted, subscript \"%s\"");
71be2cbc 1396EXTCONST char no_modify[]
93a17b20 1397 INIT("Modification of a read-only value attempted");
71be2cbc 1398EXTCONST char no_mem[]
93a17b20 1399 INIT("Out of memory!\n");
71be2cbc 1400EXTCONST char no_security[]
463ee0b2 1401 INIT("Insecure dependency in %s%s");
71be2cbc 1402EXTCONST char no_sock_func[]
93a17b20 1403 INIT("Unsupported socket function \"%s\" called");
71be2cbc 1404EXTCONST char no_dir_func[]
93a17b20 1405 INIT("Unsupported directory function \"%s\" called");
71be2cbc 1406EXTCONST char no_func[]
93a17b20 1407 INIT("The %s function is unimplemented");
71be2cbc 1408EXTCONST char no_myglob[]
748a9306 1409 INIT("\"my\" variable %s can't be in a package");
93a17b20 1410
79072805
LW		 1411EXT SV sv_undef;
1412EXT SV sv_no;
1413EXT SV sv_yes;
1414#ifdef CSH
1415 EXT char * cshname INIT(CSH);
1416 EXT I32 cshlen;
1417#endif
1418
1419#ifdef DOINIT
8e07c86e
AD		 1420EXT char *sig_name[] = { SIG_NAME };
1421EXT int sig_num[] = { SIG_NUM };
0c30d9ec 1422EXT SV * psig_ptr[sizeof(sig_num)/sizeof(*sig_num)];
1423EXT SV * psig_name[sizeof(sig_num)/sizeof(*sig_num)];
79072805
LW		 1424#else
1425EXT char *sig_name[];
8e07c86e 1426EXT int sig_num[];
0c30d9ec 1427EXT SV * psig_ptr[];
1428EXT SV * psig_name[];
79072805
LW		 1429#endif
1430
bbce6d69 1431/* fast case folding tables */
1432
79072805 1433#ifdef DOINIT
36477c24 1434EXTCONST unsigned char fold[] = {
79072805
LW		 1435 0, 1, 2, 3, 4, 5, 6, 7,
1436 8, 9, 10, 11, 12, 13, 14, 15,
1437 16, 17, 18, 19, 20, 21, 22, 23,
1438 24, 25, 26, 27, 28, 29, 30, 31,
1439 32, 33, 34, 35, 36, 37, 38, 39,
1440 40, 41, 42, 43, 44, 45, 46, 47,
1441 48, 49, 50, 51, 52, 53, 54, 55,
1442 56, 57, 58, 59, 60, 61, 62, 63,
1443 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
1444 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
1445 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
1446 'x', 'y', 'z', 91, 92, 93, 94, 95,
1447 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
1448 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
1449 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
1450 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
1451 128, 129, 130, 131, 132, 133, 134, 135,
1452 136, 137, 138, 139, 140, 141, 142, 143,
1453 144, 145, 146, 147, 148, 149, 150, 151,
1454 152, 153, 154, 155, 156, 157, 158, 159,
1455 160, 161, 162, 163, 164, 165, 166, 167,
1456 168, 169, 170, 171, 172, 173, 174, 175,
1457 176, 177, 178, 179, 180, 181, 182, 183,
1458 184, 185, 186, 187, 188, 189, 190, 191,
1459 192, 193, 194, 195, 196, 197, 198, 199,
1460 200, 201, 202, 203, 204, 205, 206, 207,
1461 208, 209, 210, 211, 212, 213, 214, 215,
1462 216, 217, 218, 219, 220, 221, 222, 223,
1463 224, 225, 226, 227, 228, 229, 230, 231,
1464 232, 233, 234, 235, 236, 237, 238, 239,
1465 240, 241, 242, 243, 244, 245, 246, 247,
1466 248, 249, 250, 251, 252, 253, 254, 255
1467};
1468#else
71be2cbc 1469EXTCONST unsigned char fold[];
79072805
LW		 1470#endif
1471
1472#ifdef DOINIT
bbce6d69 1473EXT unsigned char fold_locale[] = {
1474 0, 1, 2, 3, 4, 5, 6, 7,
1475 8, 9, 10, 11, 12, 13, 14, 15,
1476 16, 17, 18, 19, 20, 21, 22, 23,
1477 24, 25, 26, 27, 28, 29, 30, 31,
1478 32, 33, 34, 35, 36, 37, 38, 39,
1479 40, 41, 42, 43, 44, 45, 46, 47,
1480 48, 49, 50, 51, 52, 53, 54, 55,
1481 56, 57, 58, 59, 60, 61, 62, 63,
1482 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
1483 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
1484 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
1485 'x', 'y', 'z', 91, 92, 93, 94, 95,
1486 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
1487 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
1488 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
1489 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
1490 128, 129, 130, 131, 132, 133, 134, 135,
1491 136, 137, 138, 139, 140, 141, 142, 143,
1492 144, 145, 146, 147, 148, 149, 150, 151,
1493 152, 153, 154, 155, 156, 157, 158, 159,
1494 160, 161, 162, 163, 164, 165, 166, 167,
1495 168, 169, 170, 171, 172, 173, 174, 175,
1496 176, 177, 178, 179, 180, 181, 182, 183,
1497 184, 185, 186, 187, 188, 189, 190, 191,
1498 192, 193, 194, 195, 196, 197, 198, 199,
1499 200, 201, 202, 203, 204, 205, 206, 207,
1500 208, 209, 210, 211, 212, 213, 214, 215,
1501 216, 217, 218, 219, 220, 221, 222, 223,
1502 224, 225, 226, 227, 228, 229, 230, 231,
1503 232, 233, 234, 235, 236, 237, 238, 239,
1504 240, 241, 242, 243, 244, 245, 246, 247,
1505 248, 249, 250, 251, 252, 253, 254, 255
1506};
1507#else
1508EXT unsigned char fold_locale[];
1509#endif
1510
1511#ifdef DOINIT
71be2cbc 1512EXTCONST unsigned char freq[] = { /* letter frequencies for mixed English/C */
79072805
LW		 1513 1, 2, 84, 151, 154, 155, 156, 157,
1514 165, 246, 250, 3, 158, 7, 18, 29,
1515 40, 51, 62, 73, 85, 96, 107, 118,
1516 129, 140, 147, 148, 149, 150, 152, 153,
1517 255, 182, 224, 205, 174, 176, 180, 217,
1518 233, 232, 236, 187, 235, 228, 234, 226,
1519 222, 219, 211, 195, 188, 193, 185, 184,
1520 191, 183, 201, 229, 181, 220, 194, 162,
1521 163, 208, 186, 202, 200, 218, 198, 179,
1522 178, 214, 166, 170, 207, 199, 209, 206,
1523 204, 160, 212, 216, 215, 192, 175, 173,
1524 243, 172, 161, 190, 203, 189, 164, 230,
1525 167, 248, 227, 244, 242, 255, 241, 231,
1526 240, 253, 169, 210, 245, 237, 249, 247,
1527 239, 168, 252, 251, 254, 238, 223, 221,
1528 213, 225, 177, 197, 171, 196, 159, 4,
1529 5, 6, 8, 9, 10, 11, 12, 13,
1530 14, 15, 16, 17, 19, 20, 21, 22,
1531 23, 24, 25, 26, 27, 28, 30, 31,
1532 32, 33, 34, 35, 36, 37, 38, 39,
1533 41, 42, 43, 44, 45, 46, 47, 48,
1534 49, 50, 52, 53, 54, 55, 56, 57,
1535 58, 59, 60, 61, 63, 64, 65, 66,
1536 67, 68, 69, 70, 71, 72, 74, 75,
1537 76, 77, 78, 79, 80, 81, 82, 83,
1538 86, 87, 88, 89, 90, 91, 92, 93,
1539 94, 95, 97, 98, 99, 100, 101, 102,
1540 103, 104, 105, 106, 108, 109, 110, 111,
1541 112, 113, 114, 115, 116, 117, 119, 120,
1542 121, 122, 123, 124, 125, 126, 127, 128,
1543 130, 131, 132, 133, 134, 135, 136, 137,
1544 138, 139, 141, 142, 143, 144, 145, 146
1545};
1546#else
71be2cbc 1547EXTCONST unsigned char freq[];
79072805
LW		 1548#endif
1549
8990e307
LW		 1550#ifdef DEBUGGING
1551#ifdef DOINIT
71be2cbc 1552EXTCONST char* block_type[] = {
8990e307
LW		 1553 "NULL",
1554 "SUB",
1555 "EVAL",
1556 "LOOP",
1557 "SUBST",
1558 "BLOCK",
1559};
1560#else
71be2cbc 1561EXTCONST char* block_type[];
8990e307
LW		 1562#endif
1563#endif
1564
79072805
LW		 1565/*****************************************************************************/
1566/* This lexer/parser stuff is currently global since yacc is hard to reenter */
1567/*****************************************************************************/
8990e307 1568/* XXX This needs to be revisited, since BEGIN makes yacc re-enter... */
79072805 1569
a0d0e21e
LW		 1570#include "perly.h"
1571
79072805
LW		 1572typedef enum {
1573 XOPERATOR,
1574 XTERM,
79072805 1575 XREF,
8990e307 1576 XSTATE,
a0d0e21e
LW		 1577 XBLOCK,
1578 XTERMBLOCK
79072805
LW		 1579} expectation;
1580
a0d0e21e
LW		 1581EXT U32 lex_state; /* next token is determined */
1582EXT U32 lex_defer; /* state after determined token */
1583EXT expectation lex_expect; /* expect after determined token */
1584EXT I32 lex_brackets; /* bracket count */
1585EXT I32 lex_formbrack; /* bracket count at outer format level */
1586EXT I32 lex_fakebrack; /* outer bracket is mere delimiter */
1587EXT I32 lex_casemods; /* casemod count */
1588EXT I32 lex_dojoin; /* doing an array interpolation */
1589EXT I32 lex_starts; /* how many interps done on level */
1590EXT SV * lex_stuff; /* runtime pattern from m// or s/// */
1591EXT SV * lex_repl; /* runtime replacement from s/// */
1592EXT OP * lex_op; /* extra info to pass back on op */
1593EXT OP * lex_inpat; /* in pattern $) and $| are special */
1594EXT I32 lex_inwhat; /* what kind of quoting are we in */
1595EXT char * lex_brackstack; /* what kind of brackets to pop */
1596EXT char * lex_casestack; /* what kind of case mods in effect */
1597
1598/* What we know when we're in LEX_KNOWNEXT state. */
1599EXT YYSTYPE nextval[5]; /* value of next token, if any */
1600EXT I32 nexttype[5]; /* type of next token */
1601EXT I32 nexttoke;
1602
760ac839 1603EXT PerlIO * VOL rsfp INIT(Nullfp);
79072805
LW		 1604EXT SV * linestr;
1605EXT char * bufptr;
1606EXT char * oldbufptr;
1607EXT char * oldoldbufptr;
1608EXT char * bufend;
8990e307 1609EXT expectation expect INIT(XSTATE); /* how to interpret ambiguous tokens */
16d20bd9 1610EXT AV * rsfp_filters;
79072805
LW		 1611
1612EXT I32 multi_start; /* 1st line of multi-line string */
1613EXT I32 multi_end; /* last line of multi-line string */
1614EXT I32 multi_open; /* delimiter of said string */
1615EXT I32 multi_close; /* delimiter of said string */
1616
1617EXT GV * scrgv;
1618EXT I32 error_count; /* how many errors so far, max 10 */
1619EXT I32 subline; /* line this subroutine began on */
1620EXT SV * subname; /* name of current subroutine */
1621
748a9306 1622EXT CV * compcv; /* currently compiling subroutine */
93a17b20 1623EXT AV * comppad; /* storage for lexically scoped temporaries */
8990e307
LW		 1624EXT AV * comppad_name; /* variable names for "my" variables */
1625EXT I32 comppad_name_fill;/* last "introduced" variable offset */
0c30d9ec 1626EXT I32 comppad_name_floor;/* start of vars in innermost block */
8990e307
LW		 1627EXT I32 min_intro_pending;/* start of vars to introduce */
1628EXT I32 max_intro_pending;/* end of vars to introduce */
79072805 1629EXT I32 padix; /* max used index in current "register" pad */
a0d0e21e 1630EXT I32 padix_floor; /* how low may inner block reset padix */
748a9306 1631EXT I32 pad_reset_pending; /* reset pad on next attempted alloc */
79072805
LW		 1632EXT COP compiling;
1633
79072805
LW		 1634EXT I32 thisexpr; /* name id for nothing_in_common() */
1635EXT char * last_uni; /* position of last named-unary operator */
1636EXT char * last_lop; /* position of last list operator */
8990e307 1637EXT OPCODE last_lop_op; /* last list operator */
93a17b20 1638EXT bool in_my; /* we're compiling a "my" declaration */
79072805
LW		 1639#ifdef FCRYPT
1640EXT I32 cryptseen; /* has fast crypt() been initialized? */
1641#endif
1642
85e6fe83
LW		 1643EXT U32 hints; /* various compilation flags */
1644
1645 /* Note: the lowest 8 bits are reserved for
1646 stuffing into op->op_private */
1647#define HINT_INTEGER 0x00000001
1648#define HINT_STRICT_REFS 0x00000002
1649
1650#define HINT_BLOCK_SCOPE 0x00000100
1651#define HINT_STRICT_SUBS 0x00000200
1652#define HINT_STRICT_VARS 0x00000400
bbce6d69 1653#define HINT_LOCALE 0x00000800
85e6fe83 1654
79072805
LW		 1655/**************************************************************************/
1656/* This regexp stuff is global since it always happens within 1 expr eval */
1657/**************************************************************************/
1658
1659EXT char * regprecomp; /* uncompiled string. */
1660EXT char * regparse; /* Input-scan pointer. */
1661EXT char * regxend; /* End of input for compile */
1662EXT I32 regnpar; /* () count. */
1663EXT char * regcode; /* Code-emit pointer; &regdummy = don't. */
1664EXT I32 regsize; /* Code size. */
a0d0e21e 1665EXT I32 regnaughty; /* How bad is this pattern? */
79072805
LW		 1666EXT I32 regsawback; /* Did we see \1, ...? */
1667
1668EXT char * reginput; /* String-input pointer. */
79072805
LW		 1669EXT char * regbol; /* Beginning of input, for ^ check. */
1670EXT char * regeol; /* End of input, for $ check. */
1671EXT char ** regstartp; /* Pointer to startp array. */
1672EXT char ** regendp; /* Ditto for endp. */
a0d0e21e 1673EXT U32 * reglastparen; /* Similarly for lastparen. */
79072805 1674EXT char * regtill; /* How far we are required to go. */
a0d0e21e
LW		 1675EXT U16 regflags; /* are we folding, multilining? */
1676EXT char regprev; /* char before regbol, \n if none */
79072805 1677
760ac839
LW		 1678EXT bool do_undump; /* -u or dump seen? */
1679EXT VOL U32 debug;
1680
79072805
LW		 1681/***********************************************/
1682/* Global only to current interpreter instance */
1683/***********************************************/
1684
8990e307 1685#ifdef MULTIPLICITY
79072805
LW		 1686#define IEXT
1687#define IINIT(x)
1688struct interpreter {
1689#else
1690#define IEXT EXT
1691#define IINIT(x) INIT(x)
1692#endif
1693
1694/* pseudo environmental stuff */
1695IEXT int Iorigargc;
1696IEXT char ** Iorigargv;
1697IEXT GV * Ienvgv;
1698IEXT GV * Isiggv;
1699IEXT GV * Iincgv;
1700IEXT char * Iorigfilename;
748a9306
LW		 1701IEXT SV * Idiehook;
1702IEXT SV * Iwarnhook;
1703IEXT SV * Iparsehook;
79072805 1704
c07a80fd 1705/* Various states of an input record separator SV (rs, nrs) */
1706#define RsSNARF(sv) (! SvOK(sv))
1707#define RsSIMPLE(sv) (SvOK(sv) && SvCUR(sv))
1708#define RsPARA(sv) (SvOK(sv) && ! SvCUR(sv))
1709
79072805
LW		 1710/* switches */
1711IEXT char * Icddir;
1712IEXT bool Iminus_c;
a5f75d66 1713IEXT char Ipatchlevel[10];
728e2803 1714IEXT char ** Ilocalpatches;
c07a80fd 1715IEXT SV * Inrs;
2304df62 1716IEXT char * Isplitstr IINIT(" ");
79072805
LW		 1717IEXT bool Ipreprocess;
1718IEXT bool Iminus_n;
1719IEXT bool Iminus_p;
1720IEXT bool Iminus_l;
1721IEXT bool Iminus_a;
2304df62 1722IEXT bool Iminus_F;
79072805
LW		 1723IEXT bool Idoswitches;
1724IEXT bool Idowarn;
1725IEXT bool Idoextract;
79072805
LW		 1726IEXT bool Isawampersand; /* must save all match strings */
1727IEXT bool Isawstudy; /* do fbm_instr on all strings */
79072805
LW		 1728IEXT bool Isawvec;
1729IEXT bool Iunsafe;
79072805
LW		 1730IEXT char * Iinplace;
1731IEXT char * Ie_tmpname;
760ac839 1732IEXT PerlIO * Ie_fp;
79072805 1733IEXT U32 Iperldb;
748a9306 1734 /* This value may be raised by extensions for testing purposes */
8ebc5c01 1735IEXT int Iperl_destruct_level IINIT(0); /* 0=none, 1=full, 2=full with checks */
79072805
LW		 1736
1737/* magical thingies */
85e6fe83 1738IEXT Time_t Ibasetime; /* $^T */
79072805
LW		 1739IEXT SV * Iformfeed; /* $^L */
1740IEXT char * Ichopset IINIT(" \n-"); /* $: */
c07a80fd 1741IEXT SV * Irs; /* $/ */
79072805 1742IEXT char * Iofs; /* $, */
8990e307 1743IEXT STRLEN Iofslen;
79072805 1744IEXT char * Iors; /* $\ */
8990e307 1745IEXT STRLEN Iorslen;
79072805
LW		 1746IEXT char * Iofmt; /* $# */
1747IEXT I32 Imaxsysfd IINIT(MAXSYSFD); /* top fd to pass to subprocesses */
f86702cc 1748IEXT int Imultiline; /* $*--do strings hold >1 line? */
91e9c03f 1749IEXT I32 Istatusvalue; /* $? */
f86702cc 1750#ifdef VMS
ff0cee69 1751IEXT U32 Istatusvalue_vms;
f86702cc 1752#endif
79072805
LW		 1753
1754IEXT struct stat Istatcache; /* _ */
1755IEXT GV * Istatgv;
1756IEXT SV * Istatname IINIT(Nullsv);
1757
1758/* shortcuts to various I/O objects */
1759IEXT GV * Istdingv;
1760IEXT GV * Ilast_in_gv;
1761IEXT GV * Idefgv;
1762IEXT GV * Iargvgv;
1763IEXT GV * Idefoutgv;
79072805
LW		 1764IEXT GV * Iargvoutgv;
1765
1766/* shortcuts to regexp stuff */
1767IEXT GV * Ileftgv;
1768IEXT GV * Iampergv;
1769IEXT GV * Irightgv;
1770IEXT PMOP * Icurpm; /* what to do \ interps from */
79072805
LW		 1771IEXT I32 * Iscreamfirst;
1772IEXT I32 * Iscreamnext;
1773IEXT I32 Imaxscream IINIT(-1);
1774IEXT SV * Ilastscream;
1775
4633a7c4
LW		 1776/* shortcuts to misc objects */
1777IEXT GV * Ierrgv;
1778
79072805
LW		 1779/* shortcuts to debugging objects */
1780IEXT GV * IDBgv;
1781IEXT GV * IDBline;
1782IEXT GV * IDBsub;
1783IEXT SV * IDBsingle;
1784IEXT SV * IDBtrace;
1785IEXT SV * IDBsignal;
1786IEXT AV * Ilineary; /* lines of script for debugger */
1787IEXT AV * Idbargs; /* args to call listed by caller function */
1788
1789/* symbol tables */
1790IEXT HV * Idefstash; /* main symbol table */
1791IEXT HV * Icurstash; /* symbol table for current package */
1792IEXT HV * Idebstash; /* symbol table for perldb package */
1793IEXT SV * Icurstname; /* name of current package */
93a17b20
LW		 1794IEXT AV * Ibeginav; /* names of BEGIN subroutines */
1795IEXT AV * Iendav; /* names of END subroutines */
0c30d9ec 1796IEXT HV * Istrtab; /* shared string table */
79072805
LW		 1797
1798/* memory management */
79072805
LW		 1799IEXT SV ** Itmps_stack;
1800IEXT I32 Itmps_ix IINIT(-1);
1801IEXT I32 Itmps_floor IINIT(-1);
8990e307
LW		 1802IEXT I32 Itmps_max;
1803IEXT I32 Isv_count; /* how many SV* are currently allocated */
a0d0e21e 1804IEXT I32 Isv_objcount; /* how many objects are currently allocated */
8990e307
LW		 1805IEXT SV* Isv_root; /* storage for SVs belonging to interp */
1806IEXT SV* Isv_arenaroot; /* list of areas for garbage collection */
79072805
LW		 1807
1808/* funky return mechanisms */
1809IEXT I32 Ilastspbase;
1810IEXT I32 Ilastsize;
1811IEXT int Iforkprocess; /* so do_open |- can return proc# */
1812
1813/* subprocess state */
1814IEXT AV * Ifdpid; /* keep fd-to-pid mappings for my_popen */
79072805
LW		 1815
1816/* internal state */
463ee0b2
LW		 1817IEXT VOL int Iin_eval; /* trap "fatal" errors? */
1818IEXT OP * Irestartop; /* Are we propagating an error from croak? */
79072805 1819IEXT int Idelaymagic; /* ($<,$>) = ... */
2304df62 1820IEXT bool Idirty; /* In the middle of tearing things down? */
748a9306 1821IEXT U8 Ilocalizing; /* are we processing a local() list? */
79072805 1822IEXT bool Itainted; /* using variables controlled by $< */
463ee0b2 1823IEXT bool Itainting; /* doing taint checks */
e50aee73 1824IEXT char * Iop_mask IINIT(NULL); /* masked operations for safe evals */
79072805
LW		 1825
1826/* trace state */
1827IEXT I32 Idlevel;
1828IEXT I32 Idlmax IINIT(128);
1829IEXT char * Idebname;
1830IEXT char * Idebdelim;
1831
1832/* current interpreter roots */
748a9306 1833IEXT CV * Imain_cv;
463ee0b2
LW		 1834IEXT OP * Imain_root;
1835IEXT OP * Imain_start;
1836IEXT OP * Ieval_root;
1837IEXT OP * Ieval_start;
79072805
LW		 1838
1839/* runtime control stuff */
1840IEXT COP * VOL Icurcop IINIT(&compiling);
0c30d9ec 1841IEXT COP * Icurcopdb IINIT(NULL);
79072805
LW		 1842IEXT line_t Icopline IINIT(NOLINE);
1843IEXT CONTEXT * Icxstack;
1844IEXT I32 Icxstack_ix IINIT(-1);
1845IEXT I32 Icxstack_max IINIT(128);
a5f75d66 1846IEXT Sigjmp_buf Itop_env;
a0d0e21e 1847IEXT I32 Irunlevel;
1e422769 1848IEXT bool Imustcatch; /* doeval() must be caught locally */
79072805
LW		 1849
1850/* stack stuff */
0c30d9ec 1851IEXT AV * Icurstack; /* THE STACK */
79072805
LW		 1852IEXT AV * Imainstack; /* the stack when nothing funny is happening */
1853IEXT SV ** Imystack_base; /* stack->array_ary */
1854IEXT SV ** Imystack_sp; /* stack pointer now */
1855IEXT SV ** Imystack_max; /* stack->array_ary + stack->array_max */
1856
1857/* format accumulators */
463ee0b2
LW		 1858IEXT SV * Iformtarget;
1859IEXT SV * Ibodytarget;
1860IEXT SV * Itoptarget;
79072805
LW		 1861
1862/* statics moved here for shared library purposes */
93a17b20 1863IEXT SV Istrchop; /* return value from chop */
79072805
LW		 1864IEXT int Ifilemode; /* so nextargv() can preserve mode */
1865IEXT int Ilastfd; /* what to preserve mode on */
1866IEXT char * Ioldname; /* what to preserve mode on */
1867IEXT char ** IArgv; /* stuff to free from do_aexec, vfork safe */
1868IEXT char * ICmd; /* stuff to free from do_aexec, vfork safe */
1869IEXT OP * Isortcop; /* user defined sort routine */
1870IEXT HV * Isortstash; /* which is in some package or other */
1871IEXT GV * Ifirstgv; /* $a */
1872IEXT GV * Isecondgv; /* $b */
1873IEXT AV * Isortstack; /* temp stack during pp_sort() */
1874IEXT AV * Isignalstack; /* temp stack during sighandler() */
1875IEXT SV * Imystrk; /* temp key string for do_each() */
1876IEXT I32 Idumplvl; /* indentation level on syntax tree dump */
79072805
LW		 1877IEXT PMOP * Ioldlastpm; /* for saving regexp context during debugger */
1878IEXT I32 Igensym; /* next symbol for getsym() to define */
1879IEXT bool Ipreambled;
3c81428c 1880IEXT AV * Ipreambleav;
79072805
LW		 1881IEXT int Ilaststatval IINIT(-1);
1882IEXT I32 Ilaststype IINIT(OP_STAT);
1883
1884#undef IEXT
1885#undef IINIT
1886
8990e307 1887#ifdef MULTIPLICITY
79072805
LW		 1888};
1889#else
1890struct interpreter {
1891 char broiled;
1892};
1893#endif
1894
1895#include "pp.h"
1896
1897#ifdef __cplusplus
1898extern "C" {
1899#endif
1900
1901#include "proto.h"
1902
a0d0e21e
LW		 1903#ifdef EMBED
1904#define Perl_sv_setptrobj(rv,ptr,name) Perl_sv_setref_iv(rv,name,(IV)ptr)
1905#define Perl_sv_setptrref(rv,ptr) Perl_sv_setref_iv(rv,Nullch,(IV)ptr)
1906#else
1907#define sv_setptrobj(rv,ptr,name) sv_setref_iv(rv,name,(IV)ptr)
1908#define sv_setptrref(rv,ptr) sv_setref_iv(rv,Nullch,(IV)ptr)
1909#endif
1910
79072805
LW		 1911#ifdef __cplusplus
1912};
1913#endif
1914
93a17b20 1915/* The following must follow proto.h */
79072805
LW		 1916
1917#ifdef DOINIT
bbce6d69 1918
4633a7c4 1919EXT MGVTBL vtbl_sv = {magic_get,
463ee0b2
LW		 1920 magic_set,
1921 magic_len,
1922 0, 0};
4633a7c4
LW		 1923EXT MGVTBL vtbl_env = {0, 0, 0, 0, 0};
1924EXT MGVTBL vtbl_envelem = {0, magic_setenv,
85e6fe83
LW		 1925 0, magic_clearenv,
1926 0};
4633a7c4 1927EXT MGVTBL vtbl_sig = {0, 0, 0, 0, 0};
0c30d9ec 1928EXT MGVTBL vtbl_sigelem = {magic_getsig,
1929 magic_setsig,
1930 0, magic_clearsig,
1931 0};
4633a7c4 1932EXT MGVTBL vtbl_pack = {0, 0, 0, magic_wipepack,
a0d0e21e 1933 0};
4633a7c4 1934EXT MGVTBL vtbl_packelem = {magic_getpack,
463ee0b2
LW		 1935 magic_setpack,
1936 0, magic_clearpack,
1937 0};
4633a7c4 1938EXT MGVTBL vtbl_dbline = {0, magic_setdbline,
463ee0b2 1939 0, 0, 0};
4633a7c4 1940EXT MGVTBL vtbl_isa = {0, magic_setisa,
463ee0b2 1941 0, 0, 0};
4633a7c4 1942EXT MGVTBL vtbl_isaelem = {0, magic_setisa,
463ee0b2 1943 0, 0, 0};
4633a7c4 1944EXT MGVTBL vtbl_arylen = {magic_getarylen,
463ee0b2
LW		 1945 magic_setarylen,
1946 0, 0, 0};
4633a7c4 1947EXT MGVTBL vtbl_glob = {magic_getglob,
463ee0b2
LW		 1948 magic_setglob,
1949 0, 0, 0};
4633a7c4 1950EXT MGVTBL vtbl_mglob = {0, magic_setmglob,
463ee0b2 1951 0, 0, 0};
99abf803 1952EXT MGVTBL vtbl_nkeys = {0, magic_setnkeys,
1953 0, 0, 0};
4633a7c4 1954EXT MGVTBL vtbl_taint = {magic_gettaint,magic_settaint,
463ee0b2 1955 0, 0, 0};
4633a7c4 1956EXT MGVTBL vtbl_substr = {0, magic_setsubstr,
463ee0b2 1957 0, 0, 0};
4633a7c4 1958EXT MGVTBL vtbl_vec = {0, magic_setvec,
463ee0b2 1959 0, 0, 0};
4633a7c4 1960EXT MGVTBL vtbl_pos = {magic_getpos,
a0d0e21e
LW		 1961 magic_setpos,
1962 0, 0, 0};
4633a7c4 1963EXT MGVTBL vtbl_bm = {0, magic_setbm,
463ee0b2 1964 0, 0, 0};
55497cff 1965EXT MGVTBL vtbl_fm = {0, magic_setfm,
1966 0, 0, 0};
4633a7c4 1967EXT MGVTBL vtbl_uvar = {magic_getuvar,
463ee0b2
LW		 1968 magic_setuvar,
1969 0, 0, 0};
68dc0745 1970EXT MGVTBL vtbl_defelem = {magic_getdefelem,magic_setdefelem,
1971 0, 0, magic_freedefelem};
a0d0e21e 1972
36477c24 1973#ifdef USE_LOCALE_COLLATE
bbce6d69 1974EXT MGVTBL vtbl_collxfrm = {0,
1975 magic_setcollxfrm,
1976 0, 0, 0};
1977#endif
1978
a0d0e21e 1979#ifdef OVERLOAD
4633a7c4 1980EXT MGVTBL vtbl_amagic = {0, magic_setamagic,
748a9306 1981 0, 0, magic_setamagic};
4633a7c4 1982EXT MGVTBL vtbl_amagicelem = {0, magic_setamagic,
748a9306 1983 0, 0, magic_setamagic};
a0d0e21e
LW		 1984#endif /* OVERLOAD */
1985
bbce6d69 1986#else /* !DOINIT */
1987
79072805
LW		 1988EXT MGVTBL vtbl_sv;
1989EXT MGVTBL vtbl_env;
1990EXT MGVTBL vtbl_envelem;
1991EXT MGVTBL vtbl_sig;
1992EXT MGVTBL vtbl_sigelem;
463ee0b2
LW		 1993EXT MGVTBL vtbl_pack;
1994EXT MGVTBL vtbl_packelem;
79072805 1995EXT MGVTBL vtbl_dbline;
463ee0b2
LW		 1996EXT MGVTBL vtbl_isa;
1997EXT MGVTBL vtbl_isaelem;
79072805
LW		 1998EXT MGVTBL vtbl_arylen;
1999EXT MGVTBL vtbl_glob;
93a17b20 2000EXT MGVTBL vtbl_mglob;
99abf803 2001EXT MGVTBL vtbl_nkeys;
463ee0b2 2002EXT MGVTBL vtbl_taint;
79072805
LW		 2003EXT MGVTBL vtbl_substr;
2004EXT MGVTBL vtbl_vec;
a0d0e21e 2005EXT MGVTBL vtbl_pos;
79072805 2006EXT MGVTBL vtbl_bm;
55497cff 2007EXT MGVTBL vtbl_fm;
79072805 2008EXT MGVTBL vtbl_uvar;
68dc0745 2009EXT MGVTBL vtbl_defelem;
a0d0e21e 2010
36477c24 2011#ifdef USE_LOCALE_COLLATE
bbce6d69 2012EXT MGVTBL vtbl_collxfrm;
2013#endif
2014
a0d0e21e
LW		 2015#ifdef OVERLOAD
2016EXT MGVTBL vtbl_amagic;
2017EXT MGVTBL vtbl_amagicelem;
2018#endif /* OVERLOAD */
2019
bbce6d69 2020#endif /* !DOINIT */
85e6fe83 2021
a0d0e21e 2022#ifdef OVERLOAD
c0315cdf 2023
a0d0e21e
LW		 2024EXT long amagic_generation;
2025
a6006777 2026#define NofAMmeth 58
a0d0e21e 2027#ifdef DOINIT
a6006777 2028EXTCONST char * AMG_names[NofAMmeth] = {
2029 "fallback", "abs", /* "fallback" should be the first. */
2030 "bool", "nomethod",
2031 "\"\"", "0+",
2032 "+", "+=",
2033 "-", "-=",
2034 "*", "*=",
2035 "/", "/=",
2036 "%", "%=",
2037 "**", "**=",
2038 "<<", "<<=",
2039 ">>", ">>=",
2040 "&", "&=",
2041 "|", "|=",
2042 "^", "^=",
2043 "<", "<=",
2044 ">", ">=",
2045 "==", "!=",
2046 "<=>", "cmp",
2047 "lt", "le",
2048 "gt", "ge",
2049 "eq", "ne",
2050 "!", "~",
2051 "++", "--",
2052 "atan2", "cos",
2053 "sin", "exp",
2054 "log", "sqrt",
2055 "x", "x=",
2056 ".", ".=",
2057 "=", "neg"
a0d0e21e
LW		 2058};
2059#else
a6006777 2060EXTCONST char * AMG_names[NofAMmeth];
a0d0e21e
LW		 2061#endif /* def INITAMAGIC */
2062
a6006777 2063struct am_table {
a0d0e21e
LW		 2064 long was_ok_sub;
2065 long was_ok_am;
a6006777 2066 U32 flags;
2067 CV* table[NofAMmeth];
a0d0e21e
LW		 2068 long fallback;
2069};
a6006777 2070struct am_table_short {
2071 long was_ok_sub;
2072 long was_ok_am;
2073 U32 flags;
2074};
a0d0e21e 2075typedef struct am_table AMT;
a6006777 2076typedef struct am_table_short AMTS;
a0d0e21e
LW		 2077
2078#define AMGfallNEVER 1
2079#define AMGfallNO 2
2080#define AMGfallYES 3
2081
a6006777 2082#define AMTf_AMAGIC 1
2083#define AMT_AMAGIC(amt) ((amt)->flags & AMTf_AMAGIC)
2084#define AMT_AMAGIC_on(amt) ((amt)->flags |= AMTf_AMAGIC)
2085#define AMT_AMAGIC_off(amt) ((amt)->flags &= ~AMTf_AMAGIC)
2086
a0d0e21e
LW		 2087enum {
2088 fallback_amg, abs_amg,
2089 bool__amg, nomethod_amg,
2090 string_amg, numer_amg,
2091 add_amg, add_ass_amg,
2092 subtr_amg, subtr_ass_amg,
2093 mult_amg, mult_ass_amg,
2094 div_amg, div_ass_amg,
2095 mod_amg, mod_ass_amg,
2096 pow_amg, pow_ass_amg,
2097 lshift_amg, lshift_ass_amg,
2098 rshift_amg, rshift_ass_amg,
748a9306
LW		 2099 band_amg, band_ass_amg,
2100 bor_amg, bor_ass_amg,
2101 bxor_amg, bxor_ass_amg,
a0d0e21e
LW		 2102 lt_amg, le_amg,
2103 gt_amg, ge_amg,
2104 eq_amg, ne_amg,
2105 ncmp_amg, scmp_amg,
2106 slt_amg, sle_amg,
2107 sgt_amg, sge_amg,
2108 seq_amg, sne_amg,
a0d0e21e
LW		 2109 not_amg, compl_amg,
2110 inc_amg, dec_amg,
2111 atan2_amg, cos_amg,
2112 sin_amg, exp_amg,
2113 log_amg, sqrt_amg,
2114 repeat_amg, repeat_ass_amg,
748a9306
LW		 2115 concat_amg, concat_ass_amg,
2116 copy_amg, neg_amg
a0d0e21e 2117};
c0315cdf
JH		 2118
2119/*
2120 * some compilers like to redefine cos et alia as faster
2121 * (and less accurate?) versions called F_cos et cetera (Quidquid
2122 * latine dictum sit, altum viditur.) This trick collides with
2123 * the Perl overloading (amg). The following #defines fool both.
2124 */
2125
2126#ifdef _FASTMATH
2127# ifdef atan2
2128# define F_atan2_amg atan2_amg
2129# endif
2130# ifdef cos
2131# define F_cos_amg cos_amg
2132# endif
2133# ifdef exp
2134# define F_exp_amg exp_amg
2135# endif
2136# ifdef log
2137# define F_log_amg log_amg
2138# endif
2139# ifdef pow
2140# define F_pow_amg pow_amg
2141# endif
2142# ifdef sin
2143# define F_sin_amg sin_amg
2144# endif
2145# ifdef sqrt
2146# define F_sqrt_amg sqrt_amg
2147# endif
2148#endif /* _FASTMATH */
2149
a0d0e21e 2150#endif /* OVERLOAD */
36477c24 2151
2152#ifdef USE_LOCALE_COLLATE
bbce6d69 2153EXT U32 collation_ix; /* Collation generation index */
2154EXT char * collation_name; /* Name of current collation */
2155EXT bool collation_standard INIT(TRUE); /* Assume simple collation */
2156EXT Size_t collxfrm_base; /* Basic overhead in *xfrm() */
2157EXT Size_t collxfrm_mult INIT(2); /* Expansion factor in *xfrm() */
36477c24 2158#endif /* USE_LOCALE_COLLATE */
bbce6d69 2159
36477c24 2160#ifdef USE_LOCALE_NUMERIC
bbce6d69 2161
2162EXT char * numeric_name; /* Name of current numeric locale */
2163EXT bool numeric_standard INIT(TRUE); /* Assume simple numerics */
2164EXT bool numeric_local INIT(TRUE); /* Assume local numerics */
2165
36477c24 2166#define SET_NUMERIC_STANDARD() \
2167 STMT_START { \
2168 if (! numeric_standard) \
2169 perl_set_numeric_standard(); \
2170 } STMT_END
2171
2172#define SET_NUMERIC_LOCAL() \
2173 STMT_START { \
2174 if (! numeric_local) \
2175 perl_set_numeric_local(); \
2176 } STMT_END
bbce6d69 2177
36477c24 2178#else /* !USE_LOCALE_NUMERIC */
bbce6d69 2179
36477c24 2180#define SET_NUMERIC_STANDARD() /**/
2181#define SET_NUMERIC_LOCAL() /**/
bbce6d69 2182
36477c24 2183#endif /* !USE_LOCALE_NUMERIC */
a0d0e21e 2184
760ac839
LW		 2185#if !defined(PERLIO_IS_STDIO) && defined(HAS_ATTRIBUTE)
2186/*
2187 * Now we have __attribute__ out of the way
2188 * Remap printf
2189 */
2190#define printf PerlIO_stdoutf
2191#endif
2192
85e6fe83 2193#endif /* Include guard */
a6e633de 2194
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