This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Fixes bug #79078, by pointing out the slight difference between Perl's
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
LW
2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
32709fdf
A
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 by Larry Wall
6 * and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of Eärendil
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
378cc40b 27#include "EXTERN.h"
864dbfa3 28#define PERL_IN_PERL_C
378cc40b 29#include "perl.h"
e3321bb0 30#include "patchlevel.h" /* for local_patches */
4a5df386 31#include "XSUB.h"
378cc40b 32
011f1a1a
JH
33#ifdef NETWARE
34#include "nwutil.h"
011f1a1a
JH
35#endif
36
df5cef82 37/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW
38#ifdef I_UNISTD
39#include <unistd.h>
40#endif
a0d0e21e 41
2aa47728
NC
42#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
43# ifdef I_SYS_WAIT
44# include <sys/wait.h>
45# endif
bf357333
NC
46# ifdef I_SYSUIO
47# include <sys/uio.h>
48# endif
49
50union control_un {
51 struct cmsghdr cm;
52 char control[CMSG_SPACE(sizeof(int))];
53};
54
2aa47728
NC
55#endif
56
5311654c
JH
57#ifdef __BEOS__
58# define HZ 1000000
59#endif
60
61#ifndef HZ
62# ifdef CLK_TCK
63# define HZ CLK_TCK
64# else
65# define HZ 60
66# endif
67#endif
68
7114a2d2 69#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 70char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
71#endif
72
acfe0abc 73static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 74
cc69b689 75#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 76/* Drop everything. Heck, don't even try to call it */
cc69b689
NC
77# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
78#else
ec2019ad 79/* Drop almost everything */
cc69b689 80# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 81#endif
8d063cd8 82
d6f07c05
AL
83#define CALL_BODY_SUB(myop) \
84 if (PL_op == (myop)) \
139d0ce6 85 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
86 if (PL_op) \
87 CALLRUNOPS(aTHX);
88
89#define CALL_LIST_BODY(cv) \
90 PUSHMARK(PL_stack_sp); \
ad64d0ec 91 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
d6f07c05 92
e6827a76 93static void
daa7d858 94S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 95{
27da23d5 96 dVAR;
e6827a76
NC
97 if (!PL_curinterp) {
98 PERL_SET_INTERP(my_perl);
3db8f154 99#if defined(USE_ITHREADS)
e6827a76
NC
100 INIT_THREADS;
101 ALLOC_THREAD_KEY;
102 PERL_SET_THX(my_perl);
103 OP_REFCNT_INIT;
71ad1b0c 104 HINTS_REFCNT_INIT;
e6827a76 105 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
106 MUTEX_INIT(&PL_my_ctx_mutex);
107# endif
e6827a76 108 }
c0bce9aa
NC
109#if defined(USE_ITHREADS)
110 else
111#else
112 /* This always happens for non-ithreads */
113#endif
114 {
e6827a76
NC
115 PERL_SET_THX(my_perl);
116 }
117}
06d86050 118
cbec8ebe
DM
119
120/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
121
122void
123Perl_sys_init(int* argc, char*** argv)
124{
4fc0badb 125 dVAR;
7918f24d
NC
126
127 PERL_ARGS_ASSERT_SYS_INIT;
128
cbec8ebe
DM
129 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
130 PERL_UNUSED_ARG(argv);
131 PERL_SYS_INIT_BODY(argc, argv);
132}
133
134void
135Perl_sys_init3(int* argc, char*** argv, char*** env)
136{
4fc0badb 137 dVAR;
7918f24d
NC
138
139 PERL_ARGS_ASSERT_SYS_INIT3;
140
cbec8ebe
DM
141 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
142 PERL_UNUSED_ARG(argv);
143 PERL_UNUSED_ARG(env);
144 PERL_SYS_INIT3_BODY(argc, argv, env);
145}
146
147void
d0820ef1 148Perl_sys_term()
cbec8ebe 149{
4fc0badb 150 dVAR;
bf81751b
DM
151 if (!PL_veto_cleanup) {
152 PERL_SYS_TERM_BODY();
153 }
cbec8ebe
DM
154}
155
156
32e30700
GS
157#ifdef PERL_IMPLICIT_SYS
158PerlInterpreter *
7766f137
GS
159perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
160 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
161 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
162 struct IPerlDir* ipD, struct IPerlSock* ipS,
163 struct IPerlProc* ipP)
164{
165 PerlInterpreter *my_perl;
7918f24d
NC
166
167 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
168
9f653bb5 169 /* Newx() needs interpreter, so call malloc() instead */
32e30700 170 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 171 S_init_tls_and_interp(my_perl);
32e30700
GS
172 Zero(my_perl, 1, PerlInterpreter);
173 PL_Mem = ipM;
7766f137
GS
174 PL_MemShared = ipMS;
175 PL_MemParse = ipMP;
32e30700
GS
176 PL_Env = ipE;
177 PL_StdIO = ipStd;
178 PL_LIO = ipLIO;
179 PL_Dir = ipD;
180 PL_Sock = ipS;
181 PL_Proc = ipP;
7cb608b5 182 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 183
32e30700
GS
184 return my_perl;
185}
186#else
954c1994
GS
187
188/*
ccfc67b7
JH
189=head1 Embedding Functions
190
954c1994
GS
191=for apidoc perl_alloc
192
193Allocates a new Perl interpreter. See L<perlembed>.
194
195=cut
196*/
197
93a17b20 198PerlInterpreter *
cea2e8a9 199perl_alloc(void)
79072805 200{
cea2e8a9 201 PerlInterpreter *my_perl;
79072805 202
9f653bb5 203 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 204 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 205
e6827a76 206 S_init_tls_and_interp(my_perl);
7cb608b5 207#ifndef PERL_TRACK_MEMPOOL
07409e01 208 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
209#else
210 Zero(my_perl, 1, PerlInterpreter);
211 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
212 return my_perl;
213#endif
79072805 214}
32e30700 215#endif /* PERL_IMPLICIT_SYS */
79072805 216
954c1994
GS
217/*
218=for apidoc perl_construct
219
220Initializes a new Perl interpreter. See L<perlembed>.
221
222=cut
223*/
224
79072805 225void
0cb96387 226perl_construct(pTHXx)
79072805 227{
27da23d5 228 dVAR;
7918f24d
NC
229
230 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
231
8990e307 232#ifdef MULTIPLICITY
54aff467 233 init_interp();
ac27b0f5 234 PL_perl_destruct_level = 1;
54aff467 235#else
7918f24d 236 PERL_UNUSED_ARG(my_perl);
54aff467
GS
237 if (PL_perl_destruct_level > 0)
238 init_interp();
239#endif
34caed6d
DM
240 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
241
34caed6d
DM
242 /* set read-only and try to insure than we wont see REFCNT==0
243 very often */
244
245 SvREADONLY_on(&PL_sv_undef);
246 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
247
248 sv_setpv(&PL_sv_no,PL_No);
249 /* value lookup in void context - happens to have the side effect
a43d94f2
NC
250 of caching the numeric forms. However, as &PL_sv_no doesn't contain
251 a string that is a valid numer, we have to turn the public flags by
252 hand: */
34caed6d 253 SvNV(&PL_sv_no);
c1939273 254 SvIV(&PL_sv_no);
a43d94f2
NC
255 SvIOK_on(&PL_sv_no);
256 SvNOK_on(&PL_sv_no);
34caed6d
DM
257 SvREADONLY_on(&PL_sv_no);
258 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
259
260 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 261 SvNV(&PL_sv_yes);
c1939273 262 SvIV(&PL_sv_yes);
34caed6d
DM
263 SvREADONLY_on(&PL_sv_yes);
264 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
265
266 SvREADONLY_on(&PL_sv_placeholder);
267 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
268
269 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 270#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 271 PL_pidstatus = newHV();
ca0c25f6 272#endif
79072805 273
396482e1 274 PL_rs = newSVpvs("\n");
dc92893f 275
cea2e8a9 276 init_stacks();
79072805 277
748a9306 278 init_ids();
a5f75d66 279
312caa8e 280 JMPENV_BOOTSTRAP;
f86702cc
PP
281 STATUS_ALL_SUCCESS;
282
0672f40e 283 init_i18nl10n(1);
36477c24 284 SET_NUMERIC_STANDARD();
0b5b802d 285
ab821d7f 286#if defined(LOCAL_PATCH_COUNT)
3280af22 287 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
288#endif
289
52853b95
GS
290#ifdef HAVE_INTERP_INTERN
291 sys_intern_init();
292#endif
293
3a1ee7e8 294 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 295
3280af22
NIS
296 PL_fdpid = newAV(); /* for remembering popen pids by fd */
297 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 298 PL_errors = newSVpvs("");
76f68e9b
MHM
299 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
300 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
301 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 302#ifdef USE_ITHREADS
402d2eb1
NC
303 /* First entry is a list of empty elements. It needs to be initialised
304 else all hell breaks loose in S_find_uninit_var(). */
305 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 306 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 307#endif
e5dd39fc 308#ifdef USE_REENTRANT_API
59bd0823 309 Perl_reentrant_init(aTHX);
e5dd39fc 310#endif
3d47000e
AB
311
312 /* Note that strtab is a rather special HV. Assumptions are made
313 about not iterating on it, and not adding tie magic to it.
314 It is properly deallocated in perl_destruct() */
315 PL_strtab = newHV();
316
3d47000e
AB
317 HvSHAREKEYS_off(PL_strtab); /* mandatory */
318 hv_ksplit(PL_strtab, 512);
319
0631ea03
AB
320#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
321 _dyld_lookup_and_bind
322 ("__environ", (unsigned long *) &environ_pointer, NULL);
323#endif /* environ */
324
2f42fcb0
JH
325#ifndef PERL_MICRO
326# ifdef USE_ENVIRON_ARRAY
0631ea03 327 PL_origenviron = environ;
2f42fcb0 328# endif
0631ea03
AB
329#endif
330
5311654c 331 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 332 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
333 * BeOS has those, but returns the wrong value.
334 * The HZ if not originally defined has been by now
335 * been defined as CLK_TCK, if available. */
dbc1d986 336#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
337 PL_clocktick = sysconf(_SC_CLK_TCK);
338 if (PL_clocktick <= 0)
339#endif
340 PL_clocktick = HZ;
341
081fc587
AB
342 PL_stashcache = newHV();
343
e8e3635e 344 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 345 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 346
27da23d5
JH
347#ifdef HAS_MMAP
348 if (!PL_mmap_page_size) {
349#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
350 {
351 SETERRNO(0, SS_NORMAL);
352# ifdef _SC_PAGESIZE
353 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
354# else
355 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
356# endif
357 if ((long) PL_mmap_page_size < 0) {
358 if (errno) {
44f8325f 359 SV * const error = ERRSV;
d4c19fe8 360 SvUPGRADE(error, SVt_PV);
0510663f 361 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
362 }
363 else
364 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
365 }
366 }
367#else
368# ifdef HAS_GETPAGESIZE
369 PL_mmap_page_size = getpagesize();
370# else
371# if defined(I_SYS_PARAM) && defined(PAGESIZE)
372 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
373# endif
374# endif
375#endif
376 if (PL_mmap_page_size <= 0)
377 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
378 (IV) PL_mmap_page_size);
379 }
380#endif /* HAS_MMAP */
381
382#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
383 PL_timesbase.tms_utime = 0;
384 PL_timesbase.tms_stime = 0;
385 PL_timesbase.tms_cutime = 0;
386 PL_timesbase.tms_cstime = 0;
387#endif
388
7d113631
NC
389 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
390
a3e6e81e 391 PL_registered_mros = newHV();
9e169432
NC
392 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
393 HvMAX(PL_registered_mros) = 0;
a3e6e81e 394
8990e307 395 ENTER;
79072805
LW
396}
397
954c1994 398/*
62375a60
NIS
399=for apidoc nothreadhook
400
401Stub that provides thread hook for perl_destruct when there are
402no threads.
403
404=cut
405*/
406
407int
4e9e3734 408Perl_nothreadhook(pTHX)
62375a60 409{
96a5add6 410 PERL_UNUSED_CONTEXT;
62375a60
NIS
411 return 0;
412}
413
41e4abd8
NC
414#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
415void
416Perl_dump_sv_child(pTHX_ SV *sv)
417{
418 ssize_t got;
bf357333
NC
419 const int sock = PL_dumper_fd;
420 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
421 union control_un control;
422 struct msghdr msg;
808ad2d0 423 struct iovec vec[2];
bf357333 424 struct cmsghdr *cmptr;
808ad2d0
NC
425 int returned_errno;
426 unsigned char buffer[256];
41e4abd8 427
7918f24d
NC
428 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
429
bf357333 430 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
431 return;
432
433 PerlIO_flush(Perl_debug_log);
434
bf357333
NC
435 /* All these shenanigans are to pass a file descriptor over to our child for
436 it to dump out to. We can't let it hold open the file descriptor when it
437 forks, as the file descriptor it will dump to can turn out to be one end
438 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 439 be open, the wait would be forever.) */
bf357333
NC
440
441 msg.msg_control = control.control;
442 msg.msg_controllen = sizeof(control.control);
443 /* We're a connected socket so we don't need a destination */
444 msg.msg_name = NULL;
445 msg.msg_namelen = 0;
446 msg.msg_iov = vec;
808ad2d0 447 msg.msg_iovlen = 1;
bf357333
NC
448
449 cmptr = CMSG_FIRSTHDR(&msg);
450 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
451 cmptr->cmsg_level = SOL_SOCKET;
452 cmptr->cmsg_type = SCM_RIGHTS;
453 *((int *)CMSG_DATA(cmptr)) = 1;
454
455 vec[0].iov_base = (void*)&sv;
456 vec[0].iov_len = sizeof(sv);
457 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
458
459 if(got < 0) {
bf357333 460 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
461 abort();
462 }
bf357333
NC
463 if(got < sizeof(sv)) {
464 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
465 abort();
466 }
467
808ad2d0
NC
468 /* Return protocol is
469 int: errno value
470 unsigned char: length of location string (0 for empty)
471 unsigned char*: string (not terminated)
472 */
473 vec[0].iov_base = (void*)&returned_errno;
474 vec[0].iov_len = sizeof(returned_errno);
475 vec[1].iov_base = buffer;
476 vec[1].iov_len = 1;
477
478 got = readv(sock, vec, 2);
41e4abd8
NC
479
480 if(got < 0) {
481 perror("Debug leaking scalars parent read failed");
808ad2d0 482 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
483 abort();
484 }
808ad2d0 485 if(got < sizeof(returned_errno) + 1) {
41e4abd8 486 perror("Debug leaking scalars parent short read");
808ad2d0 487 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
488 abort();
489 }
490
808ad2d0
NC
491 if (*buffer) {
492 got = read(sock, buffer + 1, *buffer);
493 if(got < 0) {
494 perror("Debug leaking scalars parent read 2 failed");
495 PerlIO_flush(PerlIO_stderr());
496 abort();
497 }
498
499 if(got < *buffer) {
500 perror("Debug leaking scalars parent short read 2");
501 PerlIO_flush(PerlIO_stderr());
502 abort();
503 }
504 }
505
506 if (returned_errno || *buffer) {
507 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
508 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
509 returned_errno, strerror(returned_errno));
41e4abd8
NC
510 }
511}
512#endif
513
62375a60 514/*
954c1994
GS
515=for apidoc perl_destruct
516
517Shuts down a Perl interpreter. See L<perlembed>.
518
519=cut
520*/
521
31d77e54 522int
0cb96387 523perl_destruct(pTHXx)
79072805 524{
27da23d5 525 dVAR;
be2ea8ed 526 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 527 HV *hv;
2aa47728 528#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
529 pid_t child;
530#endif
8990e307 531
7918f24d
NC
532 PERL_ARGS_ASSERT_PERL_DESTRUCT;
533#ifndef MULTIPLICITY
ed6c66dd 534 PERL_UNUSED_ARG(my_perl);
7918f24d 535#endif
9d4ba2ae 536
3d22c4f0
GG
537 assert(PL_scopestack_ix == 1);
538
7766f137
GS
539 /* wait for all pseudo-forked children to finish */
540 PERL_WAIT_FOR_CHILDREN;
541
3280af22 542 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
543#ifdef DEBUGGING
544 {
9d4ba2ae
AL
545 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
546 if (s) {
e1ec3a88 547 const int i = atoi(s);
5f05dabc
PP
548 if (destruct_level < i)
549 destruct_level = i;
550 }
4633a7c4
LW
551 }
552#endif
553
27da23d5 554 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
555 dJMPENV;
556 int x = 0;
557
558 JMPENV_PUSH(x);
1b6737cc 559 PERL_UNUSED_VAR(x);
f3faeb53
AB
560 if (PL_endav && !PL_minus_c)
561 call_list(PL_scopestack_ix, PL_endav);
562 JMPENV_POP;
26f423df 563 }
f3faeb53 564 LEAVE;
a0d0e21e 565 FREETMPS;
3d22c4f0 566 assert(PL_scopestack_ix == 0);
a0d0e21e 567
e00b64d4 568 /* Need to flush since END blocks can produce output */
f13a2bc0 569 my_fflush_all();
e00b64d4 570
16c91539 571 if (PL_threadhook(aTHX)) {
62375a60 572 /* Threads hook has vetoed further cleanup */
c301d606 573 PL_veto_cleanup = TRUE;
37038d91 574 return STATUS_EXIT;
62375a60
NIS
575 }
576
2aa47728
NC
577#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
578 if (destruct_level != 0) {
579 /* Fork here to create a child. Our child's job is to preserve the
580 state of scalars prior to destruction, so that we can instruct it
581 to dump any scalars that we later find have leaked.
582 There's no subtlety in this code - it assumes POSIX, and it doesn't
583 fail gracefully */
584 int fd[2];
585
586 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
587 perror("Debug leaking scalars socketpair failed");
588 abort();
589 }
590
591 child = fork();
592 if(child == -1) {
593 perror("Debug leaking scalars fork failed");
594 abort();
595 }
596 if (!child) {
597 /* We are the child */
3125a5a4
NC
598 const int sock = fd[1];
599 const int debug_fd = PerlIO_fileno(Perl_debug_log);
600 int f;
808ad2d0
NC
601 const char *where;
602 /* Our success message is an integer 0, and a char 0 */
b61433a9 603 static const char success[sizeof(int) + 1] = {0};
3125a5a4 604
2aa47728 605 close(fd[0]);
2aa47728 606
3125a5a4
NC
607 /* We need to close all other file descriptors otherwise we end up
608 with interesting hangs, where the parent closes its end of a
609 pipe, and sits waiting for (another) child to terminate. Only
610 that child never terminates, because it never gets EOF, because
bf357333
NC
611 we also have the far end of the pipe open. We even need to
612 close the debugging fd, because sometimes it happens to be one
613 end of a pipe, and a process is waiting on the other end for
614 EOF. Normally it would be closed at some point earlier in
615 destruction, but if we happen to cause the pipe to remain open,
616 EOF never occurs, and we get an infinite hang. Hence all the
617 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
618
619 f = sysconf(_SC_OPEN_MAX);
620 if(f < 0) {
808ad2d0
NC
621 where = "sysconf failed";
622 goto abort;
3125a5a4
NC
623 }
624 while (f--) {
625 if (f == sock)
626 continue;
3125a5a4
NC
627 close(f);
628 }
629
2aa47728
NC
630 while (1) {
631 SV *target;
bf357333
NC
632 union control_un control;
633 struct msghdr msg;
634 struct iovec vec[1];
635 struct cmsghdr *cmptr;
636 ssize_t got;
637 int got_fd;
638
639 msg.msg_control = control.control;
640 msg.msg_controllen = sizeof(control.control);
641 /* We're a connected socket so we don't need a source */
642 msg.msg_name = NULL;
643 msg.msg_namelen = 0;
644 msg.msg_iov = vec;
645 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
646
647 vec[0].iov_base = (void*)&target;
648 vec[0].iov_len = sizeof(target);
649
650 got = recvmsg(sock, &msg, 0);
2aa47728
NC
651
652 if(got == 0)
653 break;
654 if(got < 0) {
808ad2d0
NC
655 where = "recv failed";
656 goto abort;
2aa47728
NC
657 }
658 if(got < sizeof(target)) {
808ad2d0
NC
659 where = "short recv";
660 goto abort;
2aa47728 661 }
bf357333 662
808ad2d0
NC
663 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
664 where = "no cmsg";
665 goto abort;
666 }
667 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
668 where = "wrong cmsg_len";
669 goto abort;
670 }
671 if(cmptr->cmsg_level != SOL_SOCKET) {
672 where = "wrong cmsg_level";
673 goto abort;
674 }
675 if(cmptr->cmsg_type != SCM_RIGHTS) {
676 where = "wrong cmsg_type";
677 goto abort;
678 }
bf357333
NC
679
680 got_fd = *(int*)CMSG_DATA(cmptr);
681 /* For our last little bit of trickery, put the file descriptor
682 back into Perl_debug_log, as if we never actually closed it
683 */
808ad2d0
NC
684 if(got_fd != debug_fd) {
685 if (dup2(got_fd, debug_fd) == -1) {
686 where = "dup2";
687 goto abort;
688 }
689 }
2aa47728 690 sv_dump(target);
bf357333 691
2aa47728
NC
692 PerlIO_flush(Perl_debug_log);
693
808ad2d0 694 got = write(sock, &success, sizeof(success));
2aa47728
NC
695
696 if(got < 0) {
808ad2d0
NC
697 where = "write failed";
698 goto abort;
2aa47728 699 }
808ad2d0
NC
700 if(got < sizeof(success)) {
701 where = "short write";
702 goto abort;
2aa47728
NC
703 }
704 }
705 _exit(0);
808ad2d0
NC
706 abort:
707 {
708 int send_errno = errno;
709 unsigned char length = (unsigned char) strlen(where);
710 struct iovec failure[3] = {
711 {(void*)&send_errno, sizeof(send_errno)},
712 {&length, 1},
713 {(void*)where, length}
714 };
715 int got = writev(sock, failure, 3);
716 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
717 in the parent if we try to read from the socketpair after the
718 child has exited, even if there was data to read.
719 So sleep a bit to give the parent a fighting chance of
720 reading the data. */
721 sleep(2);
722 _exit((got == -1) ? errno : 0);
723 }
bf357333 724 /* End of child. */
2aa47728 725 }
41e4abd8 726 PL_dumper_fd = fd[0];
2aa47728
NC
727 close(fd[1]);
728 }
729#endif
730
ff0cee69
PP
731 /* We must account for everything. */
732
733 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
734 /* Do this now, because destroying ops can cause new SVs to be generated
735 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
736 PL_curcop to point to a valid op from which the filename structure
737 member is copied. */
738 PL_curcop = &PL_compiling;
3280af22 739 if (PL_main_root) {
4e380990
DM
740 /* ensure comppad/curpad to refer to main's pad */
741 if (CvPADLIST(PL_main_cv)) {
742 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
743 }
3280af22 744 op_free(PL_main_root);
5f66b61c 745 PL_main_root = NULL;
a0d0e21e 746 }
5f66b61c 747 PL_main_start = NULL;
aac9d523
DM
748 /* note that PL_main_cv isn't usually actually freed at this point,
749 * due to the CvOUTSIDE refs from subs compiled within it. It will
750 * get freed once all the subs are freed in sv_clean_all(), for
751 * destruct_level > 0 */
3280af22 752 SvREFCNT_dec(PL_main_cv);
601f1833 753 PL_main_cv = NULL;
24d3c518 754 PL_dirty = TRUE;
ff0cee69 755
13621cfb
NIS
756 /* Tell PerlIO we are about to tear things apart in case
757 we have layers which are using resources that should
758 be cleaned up now.
759 */
760
761 PerlIO_destruct(aTHX);
762
3280af22 763 if (PL_sv_objcount) {
a0d0e21e
LW
764 /*
765 * Try to destruct global references. We do this first so that the
766 * destructors and destructees still exist. Some sv's might remain.
767 * Non-referenced objects are on their own.
768 */
a0d0e21e 769 sv_clean_objs();
bf9cdc68 770 PL_sv_objcount = 0;
8990e307
LW
771 }
772
5cd24f17 773 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 774 SvREFCNT_dec(PL_warnhook);
a0714e2c 775 PL_warnhook = NULL;
3280af22 776 SvREFCNT_dec(PL_diehook);
a0714e2c 777 PL_diehook = NULL;
5cd24f17 778
4b556e6c 779 /* call exit list functions */
3280af22 780 while (PL_exitlistlen-- > 0)
acfe0abc 781 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 782
3280af22 783 Safefree(PL_exitlist);
4b556e6c 784
1c4916e5
CB
785 PL_exitlist = NULL;
786 PL_exitlistlen = 0;
787
a3e6e81e
NC
788 SvREFCNT_dec(PL_registered_mros);
789
551a8b83 790 /* jettison our possibly duplicated environment */
4b647fb0
DM
791 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
792 * so we certainly shouldn't free it here
793 */
2f42fcb0 794#ifndef PERL_MICRO
4b647fb0 795#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 796 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
797#ifdef USE_ITHREADS
798 /* only main thread can free environ[0] contents */
799 && PL_curinterp == aTHX
800#endif
801 )
802 {
551a8b83
JH
803 I32 i;
804
805 for (i = 0; environ[i]; i++)
4b420006 806 safesysfree(environ[i]);
0631ea03 807
4b420006
JH
808 /* Must use safesysfree() when working with environ. */
809 safesysfree(environ);
551a8b83
JH
810
811 environ = PL_origenviron;
812 }
813#endif
2f42fcb0 814#endif /* !PERL_MICRO */
551a8b83 815
30985c42
JH
816 if (destruct_level == 0) {
817
818 DEBUG_P(debprofdump());
819
820#if defined(PERLIO_LAYERS)
821 /* No more IO - including error messages ! */
822 PerlIO_cleanup(aTHX);
823#endif
824
825 CopFILE_free(&PL_compiling);
826 CopSTASH_free(&PL_compiling);
827
828 /* The exit() function will do everything that needs doing. */
829 return STATUS_EXIT;
830 }
831
5f8cb046
DM
832#ifdef USE_ITHREADS
833 /* the syntax tree is shared between clones
834 * so op_free(PL_main_root) only ReREFCNT_dec's
835 * REGEXPs in the parent interpreter
836 * we need to manually ReREFCNT_dec for the clones
837 */
5f8cb046 838 SvREFCNT_dec(PL_regex_padav);
7d49f689 839 PL_regex_padav = NULL;
5f8cb046
DM
840 PL_regex_pad = NULL;
841#endif
842
ad64d0ec 843 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
844 PL_stashcache = NULL;
845
5f05dabc
PP
846 /* loosen bonds of global variables */
847
2f9285f8
DM
848 /* XXX can PL_parser still be non-null here? */
849 if(PL_parser && PL_parser->rsfp) {
850 (void)PerlIO_close(PL_parser->rsfp);
851 PL_parser->rsfp = NULL;
8ebc5c01
PP
852 }
853
84386e14
RGS
854 if (PL_minus_F) {
855 Safefree(PL_splitstr);
856 PL_splitstr = NULL;
857 }
858
8ebc5c01 859 /* switches */
3280af22
NIS
860 PL_minus_n = FALSE;
861 PL_minus_p = FALSE;
862 PL_minus_l = FALSE;
863 PL_minus_a = FALSE;
864 PL_minus_F = FALSE;
865 PL_doswitches = FALSE;
599cee73 866 PL_dowarn = G_WARN_OFF;
3280af22 867 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
868 PL_unsafe = FALSE;
869
870 Safefree(PL_inplace);
bd61b366 871 PL_inplace = NULL;
a7cb1f99 872 SvREFCNT_dec(PL_patchlevel);
1e8125c6 873 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
874
875 if (PL_e_script) {
876 SvREFCNT_dec(PL_e_script);
a0714e2c 877 PL_e_script = NULL;
8ebc5c01
PP
878 }
879
bf9cdc68
RG
880 PL_perldb = 0;
881
8ebc5c01
PP
882 /* magical thingies */
883
e23d9e2f
CS
884 SvREFCNT_dec(PL_ofsgv); /* *, */
885 PL_ofsgv = NULL;
5f05dabc 886
7889fe52 887 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 888 PL_ors_sv = NULL;
8ebc5c01 889
3280af22 890 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 891 PL_rs = NULL;
dc92893f 892
d33b2eba 893 Safefree(PL_osname); /* $^O */
bd61b366 894 PL_osname = NULL;
5f05dabc 895
3280af22 896 SvREFCNT_dec(PL_statname);
a0714e2c
SS
897 PL_statname = NULL;
898 PL_statgv = NULL;
5f05dabc 899
8ebc5c01
PP
900 /* defgv, aka *_ should be taken care of elsewhere */
901
8ebc5c01 902 /* clean up after study() */
3280af22 903 SvREFCNT_dec(PL_lastscream);
a0714e2c 904 PL_lastscream = NULL;
3280af22
NIS
905 Safefree(PL_screamfirst);
906 PL_screamfirst = 0;
907 Safefree(PL_screamnext);
908 PL_screamnext = 0;
8ebc5c01 909
7d5ea4e7
GS
910 /* float buffer */
911 Safefree(PL_efloatbuf);
bd61b366 912 PL_efloatbuf = NULL;
7d5ea4e7
GS
913 PL_efloatsize = 0;
914
8ebc5c01 915 /* startup and shutdown function lists */
3280af22 916 SvREFCNT_dec(PL_beginav);
5a837c8f 917 SvREFCNT_dec(PL_beginav_save);
3280af22 918 SvREFCNT_dec(PL_endav);
7d30b5c4 919 SvREFCNT_dec(PL_checkav);
ece599bd 920 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
921 SvREFCNT_dec(PL_unitcheckav);
922 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 923 SvREFCNT_dec(PL_initav);
7d49f689
NC
924 PL_beginav = NULL;
925 PL_beginav_save = NULL;
926 PL_endav = NULL;
927 PL_checkav = NULL;
928 PL_checkav_save = NULL;
3c10abe3
AG
929 PL_unitcheckav = NULL;
930 PL_unitcheckav_save = NULL;
7d49f689 931 PL_initav = NULL;
5618dfe8 932
8ebc5c01 933 /* shortcuts just get cleared */
a0714e2c
SS
934 PL_envgv = NULL;
935 PL_incgv = NULL;
936 PL_hintgv = NULL;
937 PL_errgv = NULL;
938 PL_argvgv = NULL;
939 PL_argvoutgv = NULL;
940 PL_stdingv = NULL;
941 PL_stderrgv = NULL;
942 PL_last_in_gv = NULL;
943 PL_replgv = NULL;
944 PL_DBgv = NULL;
945 PL_DBline = NULL;
946 PL_DBsub = NULL;
947 PL_DBsingle = NULL;
948 PL_DBtrace = NULL;
949 PL_DBsignal = NULL;
601f1833 950 PL_DBcv = NULL;
7d49f689 951 PL_dbargs = NULL;
5c284bb0 952 PL_debstash = NULL;
8ebc5c01 953
7a1c5554 954 SvREFCNT_dec(PL_argvout_stack);
7d49f689 955 PL_argvout_stack = NULL;
8ebc5c01 956
5c831c24 957 SvREFCNT_dec(PL_modglobal);
5c284bb0 958 PL_modglobal = NULL;
5c831c24 959 SvREFCNT_dec(PL_preambleav);
7d49f689 960 PL_preambleav = NULL;
5c831c24 961 SvREFCNT_dec(PL_subname);
a0714e2c 962 PL_subname = NULL;
ca0c25f6 963#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 964 SvREFCNT_dec(PL_pidstatus);
5c284bb0 965 PL_pidstatus = NULL;
ca0c25f6 966#endif
5c831c24 967 SvREFCNT_dec(PL_toptarget);
a0714e2c 968 PL_toptarget = NULL;
5c831c24 969 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
970 PL_bodytarget = NULL;
971 PL_formtarget = NULL;
5c831c24 972
d33b2eba 973 /* free locale stuff */
b9582b6a 974#ifdef USE_LOCALE_COLLATE
d33b2eba 975 Safefree(PL_collation_name);
bd61b366 976 PL_collation_name = NULL;
b9582b6a 977#endif
d33b2eba 978
b9582b6a 979#ifdef USE_LOCALE_NUMERIC
d33b2eba 980 Safefree(PL_numeric_name);
bd61b366 981 PL_numeric_name = NULL;
a453c169 982 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 983 PL_numeric_radix_sv = NULL;
b9582b6a 984#endif
d33b2eba 985
5c831c24
GS
986 /* clear utf8 character classes */
987 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
988 SvREFCNT_dec(PL_utf8_ascii);
989 SvREFCNT_dec(PL_utf8_alpha);
990 SvREFCNT_dec(PL_utf8_space);
991 SvREFCNT_dec(PL_utf8_cntrl);
992 SvREFCNT_dec(PL_utf8_graph);
993 SvREFCNT_dec(PL_utf8_digit);
994 SvREFCNT_dec(PL_utf8_upper);
995 SvREFCNT_dec(PL_utf8_lower);
996 SvREFCNT_dec(PL_utf8_print);
997 SvREFCNT_dec(PL_utf8_punct);
998 SvREFCNT_dec(PL_utf8_xdigit);
999 SvREFCNT_dec(PL_utf8_mark);
1000 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1001 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1002 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1003 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1004 SvREFCNT_dec(PL_utf8_idstart);
1005 SvREFCNT_dec(PL_utf8_idcont);
2726813d 1006 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 1007 PL_utf8_alnum = NULL;
a0714e2c
SS
1008 PL_utf8_ascii = NULL;
1009 PL_utf8_alpha = NULL;
1010 PL_utf8_space = NULL;
1011 PL_utf8_cntrl = NULL;
1012 PL_utf8_graph = NULL;
1013 PL_utf8_digit = NULL;
1014 PL_utf8_upper = NULL;
1015 PL_utf8_lower = NULL;
1016 PL_utf8_print = NULL;
1017 PL_utf8_punct = NULL;
1018 PL_utf8_xdigit = NULL;
1019 PL_utf8_mark = NULL;
1020 PL_utf8_toupper = NULL;
1021 PL_utf8_totitle = NULL;
1022 PL_utf8_tolower = NULL;
1023 PL_utf8_tofold = NULL;
1024 PL_utf8_idstart = NULL;
1025 PL_utf8_idcont = NULL;
2726813d 1026 PL_utf8_foldclosures = NULL;
5c831c24 1027
971a9dd3 1028 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1029 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1030 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1031 cophh_free(CopHINTHASH_get(&PL_compiling));
1032 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3
NIS
1033 CopFILE_free(&PL_compiling);
1034 CopSTASH_free(&PL_compiling);
5c831c24 1035
a0d0e21e 1036 /* Prepare to destruct main symbol table. */
5f05dabc 1037
3280af22 1038 hv = PL_defstash;
ca556bcd
DM
1039 /* break ref loop *:: <=> %:: */
1040 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1041 PL_defstash = 0;
a0d0e21e 1042 SvREFCNT_dec(hv);
5c831c24 1043 SvREFCNT_dec(PL_curstname);
a0714e2c 1044 PL_curstname = NULL;
a0d0e21e 1045
5a844595
GS
1046 /* clear queued errors */
1047 SvREFCNT_dec(PL_errors);
a0714e2c 1048 PL_errors = NULL;
5a844595 1049
dd69841b
BB
1050 SvREFCNT_dec(PL_isarev);
1051
a0d0e21e 1052 FREETMPS;
9b387841 1053 if (destruct_level >= 2) {
3280af22 1054 if (PL_scopestack_ix != 0)
9b387841
NC
1055 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1056 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1057 (long)PL_scopestack_ix);
3280af22 1058 if (PL_savestack_ix != 0)
9b387841
NC
1059 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1060 "Unbalanced saves: %ld more saves than restores\n",
1061 (long)PL_savestack_ix);
3280af22 1062 if (PL_tmps_floor != -1)
9b387841
NC
1063 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1064 (long)PL_tmps_floor + 1);
a0d0e21e 1065 if (cxstack_ix != -1)
9b387841
NC
1066 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1067 (long)cxstack_ix + 1);
a0d0e21e 1068 }
8990e307 1069
776df701 1070#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1071 /* the entries in this list are allocated via SV PVX's, so get freed
1072 * in sv_clean_all */
1073 Safefree(PL_my_cxt_list);
776df701 1074#endif
57bb2458 1075
8990e307 1076 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1077
1078 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1079 while (sv_clean_all() > 2)
5226ed68
JH
1080 ;
1081
d4777f27
GS
1082 AvREAL_off(PL_fdpid); /* no surviving entries */
1083 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1084 PL_fdpid = NULL;
d33b2eba 1085
6c644e78
GS
1086#ifdef HAVE_INTERP_INTERN
1087 sys_intern_clear();
1088#endif
1089
6e72f9df
PP
1090 /* Destruct the global string table. */
1091 {
1092 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1093 * so that sv_free() won't fail on them.
80459961
NC
1094 * Now that the global string table is using a single hunk of memory
1095 * for both HE and HEK, we either need to explicitly unshare it the
1096 * correct way, or actually free things here.
6e72f9df 1097 */
80459961
NC
1098 I32 riter = 0;
1099 const I32 max = HvMAX(PL_strtab);
c4420975 1100 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1101 HE *hent = array[0];
1102
6e72f9df 1103 for (;;) {
0453d815 1104 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1105 HE * const next = HeNEXT(hent);
9014280d 1106 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1107 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1108 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1109 Safefree(hent);
1110 hent = next;
6e72f9df
PP
1111 }
1112 if (!hent) {
1113 if (++riter > max)
1114 break;
1115 hent = array[riter];
1116 }
1117 }
80459961
NC
1118
1119 Safefree(array);
1120 HvARRAY(PL_strtab) = 0;
1121 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1122 }
3280af22 1123 SvREFCNT_dec(PL_strtab);
6e72f9df 1124
e652bb2f 1125#ifdef USE_ITHREADS
c21d1a0f 1126 /* free the pointer tables used for cloning */
a0739874 1127 ptr_table_free(PL_ptr_table);
bf9cdc68 1128 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1129#endif
a0739874 1130
d33b2eba
GS
1131 /* free special SVs */
1132
1133 SvREFCNT(&PL_sv_yes) = 0;
1134 sv_clear(&PL_sv_yes);
1135 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1136 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1137
1138 SvREFCNT(&PL_sv_no) = 0;
1139 sv_clear(&PL_sv_no);
1140 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1141 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1142
9f375a43
DM
1143 {
1144 int i;
1145 for (i=0; i<=2; i++) {
1146 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1147 sv_clear(PERL_DEBUG_PAD(i));
1148 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1149 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1150 }
1151 }
1152
0453d815 1153 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1154 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1155
eba0f806
DM
1156#ifdef DEBUG_LEAKING_SCALARS
1157 if (PL_sv_count != 0) {
1158 SV* sva;
1159 SV* sv;
1160 register SV* svend;
1161
ad64d0ec 1162 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1163 svend = &sva[SvREFCNT(sva)];
1164 for (sv = sva + 1; sv < svend; ++sv) {
1165 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1166 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1167 " flags=0x%"UVxf
fd0854ff 1168 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1169 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1170 "serial %"UVuf"\n",
574b8821
NC
1171 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1172 pTHX__VALUE,
fd0854ff
DM
1173 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1174 sv->sv_debug_line,
1175 sv->sv_debug_inpad ? "for" : "by",
1176 sv->sv_debug_optype ?
1177 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1178 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1179 sv->sv_debug_serial
fd0854ff 1180 );
2aa47728 1181#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1182 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1183#endif
eba0f806
DM
1184 }
1185 }
1186 }
1187 }
2aa47728
NC
1188#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1189 {
1190 int status;
1191 fd_set rset;
1192 /* Wait for up to 4 seconds for child to terminate.
1193 This seems to be the least effort way of timing out on reaping
1194 its exit status. */
1195 struct timeval waitfor = {4, 0};
41e4abd8 1196 int sock = PL_dumper_fd;
2aa47728
NC
1197
1198 shutdown(sock, 1);
1199 FD_ZERO(&rset);
1200 FD_SET(sock, &rset);
1201 select(sock + 1, &rset, NULL, NULL, &waitfor);
1202 waitpid(child, &status, WNOHANG);
1203 close(sock);
1204 }
1205#endif
eba0f806 1206#endif
77abb4c6
NC
1207#ifdef DEBUG_LEAKING_SCALARS_ABORT
1208 if (PL_sv_count)
1209 abort();
1210#endif
bf9cdc68 1211 PL_sv_count = 0;
eba0f806 1212
f1fac472
NC
1213#ifdef PERL_DEBUG_READONLY_OPS
1214 free(PL_slabs);
1215 PL_slabs = NULL;
1216 PL_slab_count = 0;
1217#endif
eba0f806 1218
56a2bab7 1219#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1220 /* No more IO - including error messages ! */
1221 PerlIO_cleanup(aTHX);
1222#endif
1223
9f4bd222 1224 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1225 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1226 for no arg - and will try and SvREFCNT_dec it.
1227 */
1228 SvREFCNT(&PL_sv_undef) = 0;
1229 SvREADONLY_off(&PL_sv_undef);
1230
3280af22 1231 Safefree(PL_origfilename);
bd61b366 1232 PL_origfilename = NULL;
3280af22 1233 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1234 PL_reg_start_tmp = (char**)NULL;
1235 PL_reg_start_tmpl = 0;
43c5f42d 1236 Safefree(PL_reg_curpm);
82ba1be6 1237 Safefree(PL_reg_poscache);
dd28f7bb 1238 free_tied_hv_pool();
3280af22 1239 Safefree(PL_op_mask);
cf36064f 1240 Safefree(PL_psig_name);
bf9cdc68 1241 PL_psig_name = (SV**)NULL;
d525a7b2 1242 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1243 {
1244 /* We need to NULL PL_psig_pend first, so that
1245 signal handlers know not to use it */
1246 int *psig_save = PL_psig_pend;
1247 PL_psig_pend = (int*)NULL;
1248 Safefree(psig_save);
1249 }
a0714e2c 1250 PL_formfeed = NULL;
6e72f9df 1251 nuke_stacks();
bf9cdc68
RG
1252 PL_tainting = FALSE;
1253 PL_taint_warn = FALSE;
3280af22 1254 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1255 PL_debug = 0;
ac27b0f5 1256
a0d0e21e 1257 DEBUG_P(debprofdump());
d33b2eba 1258
e5dd39fc 1259#ifdef USE_REENTRANT_API
10bc17b6 1260 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1261#endif
1262
612f20c3
GS
1263 sv_free_arenas();
1264
5d9a96ca
DM
1265 while (PL_regmatch_slab) {
1266 regmatch_slab *s = PL_regmatch_slab;
1267 PL_regmatch_slab = PL_regmatch_slab->next;
1268 Safefree(s);
1269 }
1270
fc36a67e
PP
1271 /* As the absolutely last thing, free the non-arena SV for mess() */
1272
3280af22 1273 if (PL_mess_sv) {
f350b448
NC
1274 /* we know that type == SVt_PVMG */
1275
9c63abab 1276 /* it could have accumulated taint magic */
f350b448
NC
1277 MAGIC* mg;
1278 MAGIC* moremagic;
1279 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1280 moremagic = mg->mg_moremagic;
1281 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1282 && mg->mg_len >= 0)
1283 Safefree(mg->mg_ptr);
1284 Safefree(mg);
9c63abab 1285 }
f350b448 1286
fc36a67e 1287 /* we know that type >= SVt_PV */
8bd4d4c5 1288 SvPV_free(PL_mess_sv);
3280af22
NIS
1289 Safefree(SvANY(PL_mess_sv));
1290 Safefree(PL_mess_sv);
a0714e2c 1291 PL_mess_sv = NULL;
fc36a67e 1292 }
37038d91 1293 return STATUS_EXIT;
79072805
LW
1294}
1295
954c1994
GS
1296/*
1297=for apidoc perl_free
1298
1299Releases a Perl interpreter. See L<perlembed>.
1300
1301=cut
1302*/
1303
79072805 1304void
0cb96387 1305perl_free(pTHXx)
79072805 1306{
5174512c
NC
1307 dVAR;
1308
7918f24d
NC
1309 PERL_ARGS_ASSERT_PERL_FREE;
1310
c301d606
DM
1311 if (PL_veto_cleanup)
1312 return;
1313
7cb608b5 1314#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1315 {
1316 /*
1317 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1318 * value as we're probably hunting memory leaks then
1319 */
1320 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1321 if (!s || atoi(s) == 0) {
4fd0a9b8 1322 const U32 old_debug = PL_debug;
55ef9aae
MHM
1323 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1324 thread at thread exit. */
4fd0a9b8
NC
1325 if (DEBUG_m_TEST) {
1326 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1327 "free this thread's memory\n");
1328 PL_debug &= ~ DEBUG_m_FLAG;
1329 }
55ef9aae
MHM
1330 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1331 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1332 PL_debug = old_debug;
55ef9aae
MHM
1333 }
1334 }
7cb608b5
NC
1335#endif
1336
acfe0abc 1337#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1338# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1339 {
acfe0abc 1340# ifdef NETWARE
7af12a34 1341 void *host = nw_internal_host;
acfe0abc 1342# else
7af12a34 1343 void *host = w32_internal_host;
acfe0abc 1344# endif
7af12a34 1345 PerlMem_free(aTHXx);
acfe0abc 1346# ifdef NETWARE
7af12a34 1347 nw_delete_internal_host(host);
acfe0abc 1348# else
7af12a34 1349 win32_delete_internal_host(host);
acfe0abc 1350# endif
7af12a34 1351 }
1c0ca838
GS
1352# else
1353 PerlMem_free(aTHXx);
1354# endif
acfe0abc
GS
1355#else
1356 PerlMem_free(aTHXx);
76e3520e 1357#endif
79072805
LW
1358}
1359
b7f7fff6 1360#if defined(USE_ITHREADS)
aebd1ac7
GA
1361/* provide destructors to clean up the thread key when libperl is unloaded */
1362#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1363
826955bd 1364#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1365#pragma fini "perl_fini"
666ad1ec
GA
1366#elif defined(__sun) && !defined(__GNUC__)
1367#pragma fini (perl_fini)
aebd1ac7
GA
1368#endif
1369
0dbb1585
AL
1370static void
1371#if defined(__GNUC__)
1372__attribute__((destructor))
aebd1ac7 1373#endif
de009b76 1374perl_fini(void)
aebd1ac7 1375{
27da23d5 1376 dVAR;
c301d606 1377 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1378 FREE_THREAD_KEY;
1379}
1380
1381#endif /* WIN32 */
1382#endif /* THREADS */
1383
4b556e6c 1384void
864dbfa3 1385Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1386{
97aff369 1387 dVAR;
3280af22
NIS
1388 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1389 PL_exitlist[PL_exitlistlen].fn = fn;
1390 PL_exitlist[PL_exitlistlen].ptr = ptr;
1391 ++PL_exitlistlen;
4b556e6c
JD
1392}
1393
56cf6df8
RGS
1394#ifdef HAS_PROCSELFEXE
1395/* This is a function so that we don't hold on to MAXPATHLEN
1396 bytes of stack longer than necessary
1397 */
1398STATIC void
e1ec3a88 1399S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1400{
1401 char buf[MAXPATHLEN];
1402 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1403
1404 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1405 includes a spurious NUL which will cause $^X to fail in system
1406 or backticks (this will prevent extensions from being built and
1407 many tests from working). readlink is not meant to add a NUL.
1408 Normal readlink works fine.
1409 */
1410 if (len > 0 && buf[len-1] == '\0') {
1411 len--;
1412 }
1413
1414 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1415 returning the text "unknown" from the readlink rather than the path
1416 to the executable (or returning an error from the readlink). Any valid
1417 path has a '/' in it somewhere, so use that to validate the result.
1418 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1419 */
1420 if (len > 0 && memchr(buf, '/', len)) {
1421 sv_setpvn(sv,buf,len);
1422 }
1423 else {
1424 sv_setpv(sv,arg0);
1425 }
1426}
1427#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1428
1429STATIC void
1430S_set_caret_X(pTHX) {
97aff369 1431 dVAR;
fafc274c 1432 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1433 if (tmpgv) {
1434#ifdef HAS_PROCSELFEXE
1435 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1436#else
1437#ifdef OS2
c69033f2 1438 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1439#else
c69033f2 1440 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1441#endif
1442#endif
1443 }
1444}
1445
954c1994
GS
1446/*
1447=for apidoc perl_parse
1448
1449Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1450
1451=cut
1452*/
1453
79072805 1454int
0cb96387 1455perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1456{
27da23d5 1457 dVAR;
6224f72b 1458 I32 oldscope;
6224f72b 1459 int ret;
db36c5a1 1460 dJMPENV;
8d063cd8 1461
7918f24d
NC
1462 PERL_ARGS_ASSERT_PERL_PARSE;
1463#ifndef MULTIPLICITY
ed6c66dd 1464 PERL_UNUSED_ARG(my_perl);
7918f24d 1465#endif
9d4ba2ae 1466
b0891165
JH
1467#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1468 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1469 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1470 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1471 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1472 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1473 if (!PL_rehash_seed_set)
1474 PL_rehash_seed = get_hash_seed();
b0891165 1475 {
9d4ba2ae 1476 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1477
1b6737cc
AL
1478 if (s && (atoi(s) == 1))
1479 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1480 }
1481#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1482
3280af22 1483 PL_origargc = argc;
e2975953 1484 PL_origargv = argv;
a0d0e21e 1485
a2722ac9
GA
1486 if (PL_origalen != 0) {
1487 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1488 }
1489 else {
3cb9023d
JH
1490 /* Set PL_origalen be the sum of the contiguous argv[]
1491 * elements plus the size of the env in case that it is
e9137a8e 1492 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1493 * as the maximum modifiable length of $0. In the worst case
1494 * the area we are able to modify is limited to the size of
43c32782 1495 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1496 * --jhi */
e1ec3a88 1497 const char *s = NULL;
54bfe034 1498 int i;
1b6737cc 1499 const UV mask =
7d8e7db3 1500 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1501 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1502 const UV aligned =
43c32782
JH
1503 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1504
1505 /* See if all the arguments are contiguous in memory. Note
1506 * that 'contiguous' is a loose term because some platforms
1507 * align the argv[] and the envp[]. If the arguments look
1508 * like non-aligned, assume that they are 'strictly' or
1509 * 'traditionally' contiguous. If the arguments look like
1510 * aligned, we just check that they are within aligned
1511 * PTRSIZE bytes. As long as no system has something bizarre
1512 * like the argv[] interleaved with some other data, we are
1513 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1514 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1515 while (*s) s++;
1516 for (i = 1; i < PL_origargc; i++) {
1517 if ((PL_origargv[i] == s + 1
43c32782 1518#ifdef OS2
c8941eeb 1519 || PL_origargv[i] == s + 2
43c32782 1520#endif
c8941eeb
JH
1521 )
1522 ||
1523 (aligned &&
1524 (PL_origargv[i] > s &&
1525 PL_origargv[i] <=
1526 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1527 )
1528 {
1529 s = PL_origargv[i];
1530 while (*s) s++;
1531 }
1532 else
1533 break;
54bfe034 1534 }
54bfe034 1535 }
a4a109c2
JD
1536
1537#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1538 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1539 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1540 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1541 ||
1542 (aligned &&
1543 (PL_origenviron[0] > s &&
1544 PL_origenviron[0] <=
1545 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1546 )
1547 {
9d419b5f 1548#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1549 s = PL_origenviron[0];
1550 while (*s) s++;
1551#endif
bd61b366 1552 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1553 /* Force copy of environment. */
1554 for (i = 1; PL_origenviron[i]; i++) {
1555 if (PL_origenviron[i] == s + 1
1556 ||
1557 (aligned &&
1558 (PL_origenviron[i] > s &&
1559 PL_origenviron[i] <=
1560 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1561 )
1562 {
1563 s = PL_origenviron[i];
1564 while (*s) s++;
1565 }
1566 else
1567 break;
54bfe034 1568 }
43c32782 1569 }
54bfe034 1570 }
a4a109c2
JD
1571#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1572
2d2af554 1573 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1574 }
1575
3280af22 1576 if (PL_do_undump) {
a0d0e21e
LW
1577
1578 /* Come here if running an undumped a.out. */
1579
3280af22
NIS
1580 PL_origfilename = savepv(argv[0]);
1581 PL_do_undump = FALSE;
a0d0e21e 1582 cxstack_ix = -1; /* start label stack again */
748a9306 1583 init_ids();
b7975bdd
NC
1584 assert (!PL_tainted);
1585 TAINT;
1586 S_set_caret_X(aTHX);
1587 TAINT_NOT;
a0d0e21e
LW
1588 init_postdump_symbols(argc,argv,env);
1589 return 0;
1590 }
1591
3280af22 1592 if (PL_main_root) {
3280af22 1593 op_free(PL_main_root);
5f66b61c 1594 PL_main_root = NULL;
ff0cee69 1595 }
5f66b61c 1596 PL_main_start = NULL;
3280af22 1597 SvREFCNT_dec(PL_main_cv);
601f1833 1598 PL_main_cv = NULL;
79072805 1599
3280af22
NIS
1600 time(&PL_basetime);
1601 oldscope = PL_scopestack_ix;
599cee73 1602 PL_dowarn = G_WARN_OFF;
f86702cc 1603
14dd3ad8 1604 JMPENV_PUSH(ret);
6224f72b 1605 switch (ret) {
312caa8e 1606 case 0:
14dd3ad8 1607 parse_body(env,xsinit);
3c10abe3
AG
1608 if (PL_unitcheckav)
1609 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1610 if (PL_checkav)
1611 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1612 ret = 0;
1613 break;
6224f72b
GS
1614 case 1:
1615 STATUS_ALL_FAILURE;
1616 /* FALL THROUGH */
1617 case 2:
1618 /* my_exit() was called */
3280af22 1619 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1620 LEAVE;
1621 FREETMPS;
3280af22 1622 PL_curstash = PL_defstash;
3c10abe3
AG
1623 if (PL_unitcheckav)
1624 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1625 if (PL_checkav)
1626 call_list(oldscope, PL_checkav);
37038d91 1627 ret = STATUS_EXIT;
14dd3ad8 1628 break;
6224f72b 1629 case 3:
bf49b057 1630 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1631 ret = 1;
1632 break;
6224f72b 1633 }
14dd3ad8
GS
1634 JMPENV_POP;
1635 return ret;
1636}
1637
4a5df386
NC
1638/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1639 miniperl, and we need to see those flags reflected in the values here. */
1640
1641/* What this returns is subject to change. Use the public interface in Config.
1642 */
1643static void
1644S_Internals_V(pTHX_ CV *cv)
1645{
1646 dXSARGS;
1647#ifdef LOCAL_PATCH_COUNT
1648 const int local_patch_count = LOCAL_PATCH_COUNT;
1649#else
1650 const int local_patch_count = 0;
1651#endif
2dc296d2 1652 const int entries = 3 + local_patch_count;
4a5df386
NC
1653 int i;
1654 static char non_bincompat_options[] =
1655# ifdef DEBUGGING
1656 " DEBUGGING"
1657# endif
1658# ifdef NO_MATHOMS
0d311fbe 1659 " NO_MATHOMS"
4a5df386
NC
1660# endif
1661# ifdef PERL_DISABLE_PMC
1662 " PERL_DISABLE_PMC"
1663# endif
1664# ifdef PERL_DONT_CREATE_GVSV
1665 " PERL_DONT_CREATE_GVSV"
1666# endif
9a044a43
NC
1667# ifdef PERL_EXTERNAL_GLOB
1668 " PERL_EXTERNAL_GLOB"
1669# endif
4a5df386
NC
1670# ifdef PERL_IS_MINIPERL
1671 " PERL_IS_MINIPERL"
1672# endif
1673# ifdef PERL_MALLOC_WRAP
1674 " PERL_MALLOC_WRAP"
1675# endif
1676# ifdef PERL_MEM_LOG
1677 " PERL_MEM_LOG"
1678# endif
1679# ifdef PERL_MEM_LOG_NOIMPL
1680 " PERL_MEM_LOG_NOIMPL"
1681# endif
1682# ifdef PERL_USE_DEVEL
1683 " PERL_USE_DEVEL"
1684# endif
1685# ifdef PERL_USE_SAFE_PUTENV
1686 " PERL_USE_SAFE_PUTENV"
1687# endif
de618ee4
NC
1688# ifdef USE_ATTRIBUTES_FOR_PERLIO
1689 " USE_ATTRIBUTES_FOR_PERLIO"
1690# endif
4a5df386
NC
1691# ifdef USE_FAST_STDIO
1692 " USE_FAST_STDIO"
1693# endif
5a8d8935
NC
1694# ifdef USE_PERL_ATOF
1695 " USE_PERL_ATOF"
1696# endif
0d311fbe
NC
1697# ifdef USE_SITECUSTOMIZE
1698 " USE_SITECUSTOMIZE"
1699# endif
4a5df386
NC
1700 ;
1701 PERL_UNUSED_ARG(cv);
1702 PERL_UNUSED_ARG(items);
1703
1704 EXTEND(SP, entries);
1705
1706 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1707 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1708 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1709
1710#ifdef __DATE__
1711# ifdef __TIME__
1712 PUSHs(Perl_newSVpvn_flags(aTHX_
1713 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1714 SVs_TEMP));
1715# else
1716 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1717 SVs_TEMP));
1718# endif
1719#else
1720 PUSHs(&PL_sv_undef);
1721#endif
1722
4a5df386
NC
1723 for (i = 1; i <= local_patch_count; i++) {
1724 /* This will be an undef, if PL_localpatches[i] is NULL. */
1725 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1726 }
1727
1728 XSRETURN(entries);
1729}
1730
be71fc8f
NC
1731#define INCPUSH_UNSHIFT 0x01
1732#define INCPUSH_ADD_OLD_VERS 0x02
1733#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1734#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1735#define INCPUSH_NOT_BASEDIR 0x10
1736#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1737#define INCPUSH_ADD_SUB_DIRS \
1738 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1739
312caa8e 1740STATIC void *
14dd3ad8 1741S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1742{
27da23d5 1743 dVAR;
2f9285f8 1744 PerlIO *rsfp;
312caa8e 1745 int argc = PL_origargc;
8f42b153 1746 char **argv = PL_origargv;
e1ec3a88 1747 const char *scriptname = NULL;
312caa8e 1748 VOL bool dosearch = FALSE;
c7030b81 1749 register char c;
737c24fc 1750 bool doextract = FALSE;
bd61b366 1751 const char *cddir = NULL;
ab019eaa 1752#ifdef USE_SITECUSTOMIZE
20ef40cf 1753 bool minus_f = FALSE;
ab019eaa 1754#endif
009d90df 1755 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1756 bool add_read_e_script = FALSE;
009d90df
DM
1757
1758 SvGROW(linestr_sv, 80);
76f68e9b 1759 sv_setpvs(linestr_sv,"");
312caa8e 1760
6224f72b 1761 init_main_stash();
54310121 1762
c7030b81
NC
1763 {
1764 const char *s;
6224f72b
GS
1765 for (argc--,argv++; argc > 0; argc--,argv++) {
1766 if (argv[0][0] != '-' || !argv[0][1])
1767 break;
6224f72b
GS
1768 s = argv[0]+1;
1769 reswitch:
47f56822 1770 switch ((c = *s)) {
729a02f2 1771 case 'C':
1d5472a9
GS
1772#ifndef PERL_STRICT_CR
1773 case '\r':
1774#endif
6224f72b
GS
1775 case ' ':
1776 case '0':
1777 case 'F':
1778 case 'a':
1779 case 'c':
1780 case 'd':
1781 case 'D':
1782 case 'h':
1783 case 'i':
1784 case 'l':
1785 case 'M':
1786 case 'm':
1787 case 'n':
1788 case 'p':
1789 case 's':
1790 case 'u':
1791 case 'U':
1792 case 'v':
599cee73
PM
1793 case 'W':
1794 case 'X':
6224f72b 1795 case 'w':
97bd5664 1796 if ((s = moreswitches(s)))
6224f72b
GS
1797 goto reswitch;
1798 break;
33b78306 1799
1dbad523 1800 case 't':
22f7c9c9 1801 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1802 if( !PL_tainting ) {
1803 PL_taint_warn = TRUE;
1804 PL_tainting = TRUE;
1805 }
1806 s++;
1807 goto reswitch;
6224f72b 1808 case 'T':
22f7c9c9 1809 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1810 PL_tainting = TRUE;
317ea90d 1811 PL_taint_warn = FALSE;
6224f72b
GS
1812 s++;
1813 goto reswitch;
f86702cc 1814
bc9b29db
RH
1815 case 'E':
1816 PL_minus_E = TRUE;
1817 /* FALL THROUGH */
6224f72b 1818 case 'e':
f20b2998 1819 forbid_setid('e', FALSE);
3280af22 1820 if (!PL_e_script) {
396482e1 1821 PL_e_script = newSVpvs("");
5486870f 1822 add_read_e_script = TRUE;
6224f72b
GS
1823 }
1824 if (*++s)
3280af22 1825 sv_catpv(PL_e_script, s);
6224f72b 1826 else if (argv[1]) {
3280af22 1827 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1828 argc--,argv++;
1829 }
1830 else
47f56822 1831 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1832 sv_catpvs(PL_e_script, "\n");
6224f72b 1833 break;
afe37c7d 1834
20ef40cf 1835 case 'f':
f5542d3a 1836#ifdef USE_SITECUSTOMIZE
20ef40cf 1837 minus_f = TRUE;
f5542d3a 1838#endif
20ef40cf
GA
1839 s++;
1840 goto reswitch;
1841
6224f72b 1842 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1843 forbid_setid('I', FALSE);
bd61b366 1844 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1845 argc--,argv++;
1846 }
6224f72b 1847 if (s && *s) {
0df16ed7 1848 STRLEN len = strlen(s);
55b4bc1c 1849 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1850 }
1851 else
a67e862a 1852 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1853 break;
6224f72b 1854 case 'S':
f20b2998 1855 forbid_setid('S', FALSE);
6224f72b
GS
1856 dosearch = TRUE;
1857 s++;
1858 goto reswitch;
1859 case 'V':
7edfd0ef
NC
1860 {
1861 SV *opts_prog;
1862
7edfd0ef 1863 if (*++s != ':') {
37ca4a5b 1864 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1865 }
1866 else {
1867 ++s;
1868 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1869 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1870 0, s, 0);
1871 s += strlen(s);
1872 }
37ca4a5b 1873 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1874 /* don't look for script or read stdin */
1875 scriptname = BIT_BUCKET;
1876 goto reswitch;
6224f72b 1877 }
6224f72b 1878 case 'x':
737c24fc 1879 doextract = TRUE;
6224f72b 1880 s++;
304334da 1881 if (*s)
f4c556ac 1882 cddir = s;
6224f72b
GS
1883 break;
1884 case 0:
1885 break;
1886 case '-':
1887 if (!*++s || isSPACE(*s)) {
1888 argc--,argv++;
1889 goto switch_end;
1890 }
1891 /* catch use of gnu style long options */
1892 if (strEQ(s, "version")) {
dd374669 1893 s = (char *)"v";
6224f72b
GS
1894 goto reswitch;
1895 }
1896 if (strEQ(s, "help")) {
dd374669 1897 s = (char *)"h";
6224f72b
GS
1898 goto reswitch;
1899 }
1900 s--;
1901 /* FALL THROUGH */
1902 default:
cea2e8a9 1903 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1904 }
1905 }
c7030b81
NC
1906 }
1907
6224f72b 1908 switch_end:
54310121 1909
c7030b81
NC
1910 {
1911 char *s;
1912
f675dbe5
CB
1913 if (
1914#ifndef SECURE_INTERNAL_GETENV
1915 !PL_tainting &&
1916#endif
cf756827 1917 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1918 {
74288ac8
GS
1919 while (isSPACE(*s))
1920 s++;
317ea90d 1921 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1922 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1923 PL_tainting = TRUE;
317ea90d
MS
1924 PL_taint_warn = FALSE;
1925 }
74288ac8 1926 else {
bd61b366 1927 char *popt_copy = NULL;
74288ac8 1928 while (s && *s) {
54913509 1929 const char *d;
74288ac8
GS
1930 while (isSPACE(*s))
1931 s++;
1932 if (*s == '-') {
1933 s++;
1934 if (isSPACE(*s))
1935 continue;
1936 }
4ea8f8fb 1937 d = s;
74288ac8
GS
1938 if (!*s)
1939 break;
2b622f1a 1940 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1941 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1942 while (++s && *s) {
1943 if (isSPACE(*s)) {
cf756827 1944 if (!popt_copy) {
bfa6c418
NC
1945 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1946 s = popt_copy + (s - d);
1947 d = popt_copy;
cf756827 1948 }
4ea8f8fb
MS
1949 *s++ = '\0';
1950 break;
1951 }
1952 }
1c4db469 1953 if (*d == 't') {
317ea90d
MS
1954 if( !PL_tainting ) {
1955 PL_taint_warn = TRUE;
1956 PL_tainting = TRUE;
1957 }
1c4db469 1958 } else {
97bd5664 1959 moreswitches(d);
1c4db469 1960 }
6224f72b 1961 }
6224f72b
GS
1962 }
1963 }
c7030b81 1964 }
a0d0e21e 1965
87e06404 1966#if defined(USE_SITECUSTOMIZE) && !defined(PERL_IS_MINIPERL)
20ef40cf 1967 if (!minus_f) {
404ad9dc
NC
1968 /* SITELIB_EXP is a function call on Win32.
1969 The games with local $! are to avoid setting errno if there is no
1970 sitecustomize script. */
1971 const char *const sitelib = SITELIB_EXP;
29a861e7 1972 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1973 Perl_newSVpvf(aTHX_
1974 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
20ef40cf
GA
1975 }
1976#endif
1977
6224f72b
GS
1978 if (!scriptname)
1979 scriptname = argv[0];
3280af22 1980 if (PL_e_script) {
6224f72b
GS
1981 argc++,argv--;
1982 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1983 }
bd61b366 1984 else if (scriptname == NULL) {
6224f72b
GS
1985#ifdef MSDOS
1986 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1987 moreswitches("h");
6224f72b
GS
1988#endif
1989 scriptname = "-";
1990 }
1991
b7975bdd
NC
1992 /* Set $^X early so that it can be used for relocatable paths in @INC */
1993 assert (!PL_tainted);
1994 TAINT;
1995 S_set_caret_X(aTHX);
1996 TAINT_NOT;
2cace6ac 1997 init_perllib();
6224f72b 1998
a52eba0e 1999 {
f20b2998 2000 bool suidscript = FALSE;
829372d3 2001
cc69b689 2002 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2003
2f9285f8 2004 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2005 linestr_sv, rsfp);
6224f72b 2006
64ca3a65 2007#ifndef PERL_MICRO
a52eba0e
NC
2008# if defined(SIGCHLD) || defined(SIGCLD)
2009 {
2010# ifndef SIGCHLD
2011# define SIGCHLD SIGCLD
2012# endif
2013 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2014 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2015 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2016 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2017 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2018 }
0b5b802d 2019 }
a52eba0e 2020# endif
64ca3a65 2021#endif
0b5b802d 2022
737c24fc 2023 if (doextract) {
faef540c 2024
f20b2998 2025 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2026 setuid scripts. */
2027 forbid_setid('x', suidscript);
f20b2998 2028 /* Hence you can't get here if suidscript is true */
faef540c 2029
2f9285f8 2030 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2031 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2032 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2033 }
f4c556ac 2034 }
6224f72b 2035
ea726b52 2036 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2037 CvUNIQUE_on(PL_compcv);
2038
dd2155a4 2039 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2040
dd69841b
BB
2041 PL_isarev = newHV();
2042
0c4f7ff0 2043 boot_core_PerlIO();
6224f72b 2044 boot_core_UNIVERSAL();
e1a479c5 2045 boot_core_mro();
4a5df386 2046 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2047
2048 if (xsinit)
acfe0abc 2049 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2050#ifndef PERL_MICRO
d0d72822 2051#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2052 init_os_extras();
6224f72b 2053#endif
64ca3a65 2054#endif
6224f72b 2055
29209bc5 2056#ifdef USE_SOCKS
1b9c9cf5
DH
2057# ifdef HAS_SOCKS5_INIT
2058 socks5_init(argv[0]);
2059# else
29209bc5 2060 SOCKSinit(argv[0]);
1b9c9cf5 2061# endif
ac27b0f5 2062#endif
29209bc5 2063
6224f72b
GS
2064 init_predump_symbols();
2065 /* init_postdump_symbols not currently designed to be called */
2066 /* more than once (ENV isn't cleared first, for example) */
2067 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2068 if (!PL_do_undump)
6224f72b
GS
2069 init_postdump_symbols(argc,argv,env);
2070
27da23d5
JH
2071 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2072 * or explicitly in some platforms.
085a54d9 2073 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2074 * look like the user wants to use UTF-8. */
a0fd4948 2075#if defined(__SYMBIAN32__)
27da23d5
JH
2076 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2077#endif
e27b5b51 2078# ifndef PERL_IS_MINIPERL
06e66572
JH
2079 if (PL_unicode) {
2080 /* Requires init_predump_symbols(). */
a05d7ebb 2081 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2082 IO* io;
2083 PerlIO* fp;
2084 SV* sv;
2085
a05d7ebb 2086 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2087 * and the default open disciplines. */
a05d7ebb
JH
2088 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2089 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2090 (fp = IoIFP(io)))
2091 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2092 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2093 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2094 (fp = IoOFP(io)))
2095 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2096 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2097 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2098 (fp = IoOFP(io)))
2099 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2100 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2101 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2102 SVt_PV)))) {
a05d7ebb
JH
2103 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2104 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2105 if (in) {
2106 if (out)
76f68e9b 2107 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2108 else
76f68e9b 2109 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2110 }
2111 else if (out)
76f68e9b 2112 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2113 SvSETMAGIC(sv);
2114 }
b310b053
JH
2115 }
2116 }
e27b5b51 2117#endif
b310b053 2118
c7030b81
NC
2119 {
2120 const char *s;
4ffa73a3
JH
2121 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2122 if (strEQ(s, "unsafe"))
2123 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2124 else if (strEQ(s, "safe"))
2125 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2126 else
2127 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2128 }
c7030b81 2129 }
4ffa73a3 2130
81d86705 2131#ifdef PERL_MAD
c7030b81
NC
2132 {
2133 const char *s;
81d86705
NC
2134 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2135 PL_madskills = 1;
2136 PL_minus_c = 1;
2137 if (!s || !s[0])
2138 PL_xmlfp = PerlIO_stdout();
2139 else {
2140 PL_xmlfp = PerlIO_open(s, "w");
2141 if (!PL_xmlfp)
2142 Perl_croak(aTHX_ "Can't open %s", s);
2143 }
1a9a51d4 2144 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2145 }
c7030b81
NC
2146 }
2147
2148 {
2149 const char *s;
81d86705
NC
2150 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2151 PL_madskills = atoi(s);
1a9a51d4 2152 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2153 }
c7030b81 2154 }
81d86705
NC
2155#endif
2156
8eaa0acf 2157 lex_start(linestr_sv, rsfp, 0);
219f7226 2158 PL_subname = newSVpvs("main");
6224f72b 2159
5486870f
DM
2160 if (add_read_e_script)
2161 filter_add(read_e_script, NULL);
2162
6224f72b
GS
2163 /* now parse the script */
2164
93189314 2165 SETERRNO(0,SS_NORMAL);
28ac2b49 2166 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2167 if (PL_minus_c)
cea2e8a9 2168 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2169 else {
cea2e8a9 2170 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2171 PL_origfilename);
6224f72b
GS
2172 }
2173 }
57843af0 2174 CopLINE_set(PL_curcop, 0);
3280af22 2175 PL_curstash = PL_defstash;
3280af22
NIS
2176 if (PL_e_script) {
2177 SvREFCNT_dec(PL_e_script);
a0714e2c 2178 PL_e_script = NULL;
6224f72b
GS
2179 }
2180
3280af22 2181 if (PL_do_undump)
6224f72b
GS
2182 my_unexec();
2183
57843af0
GS
2184 if (isWARN_ONCE) {
2185 SAVECOPFILE(PL_curcop);
2186 SAVECOPLINE(PL_curcop);
3280af22 2187 gv_check(PL_defstash);
57843af0 2188 }
6224f72b
GS
2189
2190 LEAVE;
2191 FREETMPS;
2192
2193#ifdef MYMALLOC
f6a607bc
RGS
2194 {
2195 const char *s;
6224f72b
GS
2196 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2197 dump_mstats("after compilation:");
f6a607bc 2198 }
6224f72b
GS
2199#endif
2200
2201 ENTER;
febb3a6d 2202 PL_restartjmpenv = NULL;
3280af22 2203 PL_restartop = 0;
312caa8e 2204 return NULL;
6224f72b
GS
2205}
2206
954c1994
GS
2207/*
2208=for apidoc perl_run
2209
2210Tells a Perl interpreter to run. See L<perlembed>.
2211
2212=cut
2213*/
2214
6224f72b 2215int
0cb96387 2216perl_run(pTHXx)
6224f72b 2217{
97aff369 2218 dVAR;
6224f72b 2219 I32 oldscope;
14dd3ad8 2220 int ret = 0;
db36c5a1 2221 dJMPENV;
6224f72b 2222
7918f24d
NC
2223 PERL_ARGS_ASSERT_PERL_RUN;
2224#ifndef MULTIPLICITY
ed6c66dd 2225 PERL_UNUSED_ARG(my_perl);
7918f24d 2226#endif
9d4ba2ae 2227
3280af22 2228 oldscope = PL_scopestack_ix;
96e176bf
CL
2229#ifdef VMS
2230 VMSISH_HUSHED = 0;
2231#endif
6224f72b 2232
14dd3ad8 2233 JMPENV_PUSH(ret);
6224f72b
GS
2234 switch (ret) {
2235 case 1:
2236 cxstack_ix = -1; /* start context stack again */
312caa8e 2237 goto redo_body;
14dd3ad8 2238 case 0: /* normal completion */
14dd3ad8
GS
2239 redo_body:
2240 run_body(oldscope);
14dd3ad8
GS
2241 /* FALL THROUGH */
2242 case 2: /* my_exit() */
3280af22 2243 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2244 LEAVE;
2245 FREETMPS;
3280af22 2246 PL_curstash = PL_defstash;
3a1ee7e8 2247 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2248 PL_endav && !PL_minus_c)
2249 call_list(oldscope, PL_endav);
6224f72b
GS
2250#ifdef MYMALLOC
2251 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2252 dump_mstats("after execution: ");
2253#endif
37038d91 2254 ret = STATUS_EXIT;
14dd3ad8 2255 break;
6224f72b 2256 case 3:
312caa8e
CS
2257 if (PL_restartop) {
2258 POPSTACK_TO(PL_mainstack);
2259 goto redo_body;
6224f72b 2260 }
bf49b057 2261 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2262 FREETMPS;
14dd3ad8
GS
2263 ret = 1;
2264 break;
6224f72b
GS
2265 }
2266
14dd3ad8
GS
2267 JMPENV_POP;
2268 return ret;
312caa8e
CS
2269}
2270
dd374669 2271STATIC void
14dd3ad8
GS
2272S_run_body(pTHX_ I32 oldscope)
2273{
97aff369 2274 dVAR;
6224f72b 2275 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2276 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2277
3280af22 2278 if (!PL_restartop) {
81d86705
NC
2279#ifdef PERL_MAD
2280 if (PL_xmlfp) {
2281 xmldump_all();
2282 exit(0); /* less likely to core dump than my_exit(0) */
2283 }
2284#endif
cf2782cd 2285#ifdef DEBUGGING
f0e3f042
CS
2286 if (DEBUG_x_TEST || DEBUG_B_TEST)
2287 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2288 if (!DEBUG_q_TEST)
2289 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2290#endif
6224f72b 2291
3280af22 2292 if (PL_minus_c) {
bf49b057 2293 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2294 my_exit(0);
2295 }
3280af22 2296 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2297 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2298 if (PL_initav)
2299 call_list(oldscope, PL_initav);
f1fac472
NC
2300#ifdef PERL_DEBUG_READONLY_OPS
2301 Perl_pending_Slabs_to_ro(aTHX);
2302#endif
6224f72b
GS
2303 }
2304
2305 /* do it */
2306
3280af22 2307 if (PL_restartop) {
febb3a6d 2308 PL_restartjmpenv = NULL;
533c011a 2309 PL_op = PL_restartop;
3280af22 2310 PL_restartop = 0;
cea2e8a9 2311 CALLRUNOPS(aTHX);
6224f72b 2312 }
3280af22
NIS
2313 else if (PL_main_start) {
2314 CvDEPTH(PL_main_cv) = 1;
533c011a 2315 PL_op = PL_main_start;
cea2e8a9 2316 CALLRUNOPS(aTHX);
6224f72b 2317 }
f6b3007c
JH
2318 my_exit(0);
2319 /* NOTREACHED */
6224f72b
GS
2320}
2321
954c1994 2322/*
ccfc67b7
JH
2323=head1 SV Manipulation Functions
2324
954c1994
GS
2325=for apidoc p||get_sv
2326
64ace3f8
NC
2327Returns the SV of the specified Perl scalar. C<flags> are passed to
2328C<gv_fetchpv>. If C<GV_ADD> is set and the
2329Perl variable does not exist then it will be created. If C<flags> is zero
2330and the variable does not exist then NULL is returned.
954c1994
GS
2331
2332=cut
2333*/
2334
6224f72b 2335SV*
64ace3f8 2336Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2337{
2338 GV *gv;
7918f24d
NC
2339
2340 PERL_ARGS_ASSERT_GET_SV;
2341
64ace3f8 2342 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2343 if (gv)
2344 return GvSV(gv);
a0714e2c 2345 return NULL;
6224f72b
GS
2346}
2347
954c1994 2348/*
ccfc67b7
JH
2349=head1 Array Manipulation Functions
2350
954c1994
GS
2351=for apidoc p||get_av
2352
cbfd0a87
NC
2353Returns the AV of the specified Perl array. C<flags> are passed to
2354C<gv_fetchpv>. If C<GV_ADD> is set and the
2355Perl variable does not exist then it will be created. If C<flags> is zero
2356and the variable does not exist then NULL is returned.
954c1994
GS
2357
2358=cut
2359*/
2360
6224f72b 2361AV*
cbfd0a87 2362Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2363{
cbfd0a87 2364 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2365
2366 PERL_ARGS_ASSERT_GET_AV;
2367
cbfd0a87 2368 if (flags)
6224f72b
GS
2369 return GvAVn(gv);
2370 if (gv)
2371 return GvAV(gv);
7d49f689 2372 return NULL;
6224f72b
GS
2373}
2374
954c1994 2375/*
ccfc67b7
JH
2376=head1 Hash Manipulation Functions
2377
954c1994
GS
2378=for apidoc p||get_hv
2379
6673a63c
NC
2380Returns the HV of the specified Perl hash. C<flags> are passed to
2381C<gv_fetchpv>. If C<GV_ADD> is set and the
2382Perl variable does not exist then it will be created. If C<flags> is zero
2383and the variable does not exist then NULL is returned.
954c1994
GS
2384
2385=cut
2386*/
2387
6224f72b 2388HV*
6673a63c 2389Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2390{
6673a63c 2391 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2392
2393 PERL_ARGS_ASSERT_GET_HV;
2394
6673a63c 2395 if (flags)
a0d0e21e
LW
2396 return GvHVn(gv);
2397 if (gv)
2398 return GvHV(gv);
5c284bb0 2399 return NULL;
a0d0e21e
LW
2400}
2401
954c1994 2402/*
ccfc67b7
JH
2403=head1 CV Manipulation Functions
2404
780a5241
NC
2405=for apidoc p||get_cvn_flags
2406
2407Returns the CV of the specified Perl subroutine. C<flags> are passed to
2408C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2409exist then it will be declared (which has the same effect as saying
2410C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2411then NULL is returned.
2412
954c1994
GS
2413=for apidoc p||get_cv
2414
780a5241 2415Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2416
2417=cut
2418*/
2419
a0d0e21e 2420CV*
780a5241 2421Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2422{
780a5241 2423 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2424 /* XXX this is probably not what they think they're getting.
2425 * It has the same effect as "sub name;", i.e. just a forward
2426 * declaration! */
7918f24d
NC
2427
2428 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2429
780a5241 2430 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2431 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2432 return newSUB(start_subparse(FALSE, 0),
780a5241 2433 newSVOP(OP_CONST, 0, sv),
5f66b61c 2434 NULL, NULL);
780a5241 2435 }
a0d0e21e 2436 if (gv)
8ebc5c01 2437 return GvCVu(gv);
601f1833 2438 return NULL;
a0d0e21e
LW
2439}
2440
2c67934f
NC
2441/* Nothing in core calls this now, but we can't replace it with a macro and
2442 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2443CV*
2444Perl_get_cv(pTHX_ const char *name, I32 flags)
2445{
7918f24d
NC
2446 PERL_ARGS_ASSERT_GET_CV;
2447
780a5241
NC
2448 return get_cvn_flags(name, strlen(name), flags);
2449}
2450
79072805
LW
2451/* Be sure to refetch the stack pointer after calling these routines. */
2452
954c1994 2453/*
ccfc67b7
JH
2454
2455=head1 Callback Functions
2456
954c1994
GS
2457=for apidoc p||call_argv
2458
2459Performs a callback to the specified Perl sub. See L<perlcall>.
2460
2461=cut
2462*/
2463
a0d0e21e 2464I32
8f42b153 2465Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2466
8ac85365
NIS
2467 /* See G_* flags in cop.h */
2468 /* null terminated arg list */
8990e307 2469{
97aff369 2470 dVAR;
a0d0e21e 2471 dSP;
8990e307 2472
7918f24d
NC
2473 PERL_ARGS_ASSERT_CALL_ARGV;
2474
924508f0 2475 PUSHMARK(SP);
a0d0e21e 2476 if (argv) {
8990e307 2477 while (*argv) {
6e449a3a 2478 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2479 argv++;
2480 }
a0d0e21e 2481 PUTBACK;
8990e307 2482 }
864dbfa3 2483 return call_pv(sub_name, flags);
8990e307
LW
2484}
2485
954c1994
GS
2486/*
2487=for apidoc p||call_pv
2488
2489Performs a callback to the specified Perl sub. See L<perlcall>.
2490
2491=cut
2492*/
2493
a0d0e21e 2494I32
864dbfa3 2495Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2496 /* name of the subroutine */
2497 /* See G_* flags in cop.h */
a0d0e21e 2498{
7918f24d
NC
2499 PERL_ARGS_ASSERT_CALL_PV;
2500
0da0e728 2501 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2502}
2503
954c1994
GS
2504/*
2505=for apidoc p||call_method
2506
2507Performs a callback to the specified Perl method. The blessed object must
2508be on the stack. See L<perlcall>.
2509
2510=cut
2511*/
2512
a0d0e21e 2513I32
864dbfa3 2514Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2515 /* name of the subroutine */
2516 /* See G_* flags in cop.h */
a0d0e21e 2517{
46ca9bac 2518 STRLEN len;
7918f24d
NC
2519 PERL_ARGS_ASSERT_CALL_METHOD;
2520
46ca9bac 2521 len = strlen(methname);
2522
2523 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2524 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2525}
2526
2527/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2528/*
2529=for apidoc p||call_sv
2530
2531Performs a callback to the Perl sub whose name is in the SV. See
2532L<perlcall>.
2533
2534=cut
2535*/
2536
a0d0e21e 2537I32
001d637e 2538Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2539 /* See G_* flags in cop.h */
a0d0e21e 2540{
27da23d5 2541 dVAR; dSP;
a0d0e21e 2542 LOGOP myop; /* fake syntax tree node */
968b3946 2543 UNOP method_op;
aa689395 2544 I32 oldmark;
8ea43dc8 2545 VOL I32 retval = 0;
a0d0e21e 2546 I32 oldscope;
54310121 2547 bool oldcatch = CATCH_GET;
6224f72b 2548 int ret;
c4420975 2549 OP* const oldop = PL_op;
db36c5a1 2550 dJMPENV;
1e422769 2551
7918f24d
NC
2552 PERL_ARGS_ASSERT_CALL_SV;
2553
a0d0e21e
LW
2554 if (flags & G_DISCARD) {
2555 ENTER;
2556 SAVETMPS;
2557 }
2f8edad0
NC
2558 if (!(flags & G_WANT)) {
2559 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2560 */
2561 flags |= G_SCALAR;
2562 }
a0d0e21e 2563
aa689395 2564 Zero(&myop, 1, LOGOP);
5f66b61c 2565 myop.op_next = NULL;
f51d4af5 2566 if (!(flags & G_NOARGS))
aa689395 2567 myop.op_flags |= OPf_STACKED;
4f911530 2568 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2569 SAVEOP();
533c011a 2570 PL_op = (OP*)&myop;
aa689395 2571
3280af22
NIS
2572 EXTEND(PL_stack_sp, 1);
2573 *++PL_stack_sp = sv;
aa689395 2574 oldmark = TOPMARK;
3280af22 2575 oldscope = PL_scopestack_ix;
a0d0e21e 2576
3280af22 2577 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2578 /* Handle first BEGIN of -d. */
3280af22 2579 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2580 /* Try harder, since this may have been a sighandler, thus
2581 * curstash may be meaningless. */
ea726b52 2582 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2583 && !(flags & G_NODEBUG))
533c011a 2584 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2585
968b3946
GS
2586 if (flags & G_METHOD) {
2587 Zero(&method_op, 1, UNOP);
2588 method_op.op_next = PL_op;
2589 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2590 method_op.op_type = OP_METHOD;
968b3946 2591 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2592 myop.op_type = OP_ENTERSUB;
f39d0b86 2593 PL_op = (OP*)&method_op;
968b3946
GS
2594 }
2595
312caa8e 2596 if (!(flags & G_EVAL)) {
0cdb2077 2597 CATCH_SET(TRUE);
d6f07c05 2598 CALL_BODY_SUB((OP*)&myop);
312caa8e 2599 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2600 CATCH_SET(oldcatch);
312caa8e
CS
2601 }
2602 else {
d78bda3d 2603 myop.op_other = (OP*)&myop;
3280af22 2604 PL_markstack_ptr--;
edb2152a 2605 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2606 PL_markstack_ptr++;
a0d0e21e 2607
14dd3ad8 2608 JMPENV_PUSH(ret);
edb2152a 2609
6224f72b
GS
2610 switch (ret) {
2611 case 0:
14dd3ad8 2612 redo_body:
d6f07c05 2613 CALL_BODY_SUB((OP*)&myop);
312caa8e 2614 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2615 if (!(flags & G_KEEPERR)) {
ab69dbc2 2616 CLEAR_ERRSV();
8433848b 2617 }
a0d0e21e 2618 break;
6224f72b 2619 case 1:
f86702cc 2620 STATUS_ALL_FAILURE;
a0d0e21e 2621 /* FALL THROUGH */
6224f72b 2622 case 2:
a0d0e21e 2623 /* my_exit() was called */
3280af22 2624 PL_curstash = PL_defstash;
a0d0e21e 2625 FREETMPS;
14dd3ad8 2626 JMPENV_POP;
f86702cc 2627 my_exit_jump();
a0d0e21e 2628 /* NOTREACHED */
6224f72b 2629 case 3:
3280af22 2630 if (PL_restartop) {
febb3a6d 2631 PL_restartjmpenv = NULL;
533c011a 2632 PL_op = PL_restartop;
3280af22 2633 PL_restartop = 0;
312caa8e 2634 goto redo_body;
a0d0e21e 2635 }
3280af22 2636 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2637 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2638 retval = 0;
2639 else {
2640 retval = 1;
3280af22 2641 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2642 }
312caa8e 2643 break;
a0d0e21e 2644 }
a0d0e21e 2645
edb2152a
NC
2646 if (PL_scopestack_ix > oldscope)
2647 delete_eval_scope();
14dd3ad8 2648 JMPENV_POP;
a0d0e21e 2649 }
1e422769 2650
a0d0e21e 2651 if (flags & G_DISCARD) {
3280af22 2652 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2653 retval = 0;
2654 FREETMPS;
2655 LEAVE;
2656 }
533c011a 2657 PL_op = oldop;
a0d0e21e
LW
2658 return retval;
2659}
2660
6e72f9df 2661/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2662
954c1994
GS
2663/*
2664=for apidoc p||eval_sv
2665
be064c4a
DM
2666Tells Perl to C<eval> the string in the SV. It supports the same flags
2667as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2668
2669=cut
2670*/
2671
a0d0e21e 2672I32
864dbfa3 2673Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2674
8ac85365 2675 /* See G_* flags in cop.h */
a0d0e21e 2676{
97aff369 2677 dVAR;
924508f0 2678 dSP;
a0d0e21e 2679 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2680 VOL I32 oldmark = SP - PL_stack_base;
2681 VOL I32 retval = 0;
6224f72b 2682 int ret;
c4420975 2683 OP* const oldop = PL_op;
db36c5a1 2684 dJMPENV;
84902520 2685
7918f24d
NC
2686 PERL_ARGS_ASSERT_EVAL_SV;
2687
4633a7c4
LW
2688 if (flags & G_DISCARD) {
2689 ENTER;
2690 SAVETMPS;
2691 }
2692
462e5cf6 2693 SAVEOP();
533c011a
NIS
2694 PL_op = (OP*)&myop;
2695 Zero(PL_op, 1, UNOP);
3280af22
NIS
2696 EXTEND(PL_stack_sp, 1);
2697 *++PL_stack_sp = sv;
79072805 2698
4633a7c4
LW
2699 if (!(flags & G_NOARGS))
2700 myop.op_flags = OPf_STACKED;
5f66b61c 2701 myop.op_next = NULL;
6e72f9df 2702 myop.op_type = OP_ENTEREVAL;
4f911530 2703 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2704 if (flags & G_KEEPERR)
2705 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2706
dedbcade
DM
2707 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2708 * before a PUSHEVAL, which corrupts the stack after a croak */
2709 TAINT_PROPER("eval_sv()");
2710
14dd3ad8 2711 JMPENV_PUSH(ret);
6224f72b
GS
2712 switch (ret) {
2713 case 0:
14dd3ad8 2714 redo_body:
2ba65d5f
DM
2715 if (PL_op == (OP*)(&myop)) {
2716 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2717 if (!PL_op)
2718 goto fail; /* failed in compilation */
2719 }
4aca2f62 2720 CALLRUNOPS(aTHX);
312caa8e 2721 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2722 if (!(flags & G_KEEPERR)) {
ab69dbc2 2723 CLEAR_ERRSV();
8433848b 2724 }
4633a7c4 2725 break;
6224f72b 2726 case 1:
f86702cc 2727 STATUS_ALL_FAILURE;
4633a7c4 2728 /* FALL THROUGH */
6224f72b 2729 case 2:
4633a7c4 2730 /* my_exit() was called */
3280af22 2731 PL_curstash = PL_defstash;
4633a7c4 2732 FREETMPS;
14dd3ad8 2733 JMPENV_POP;
f86702cc 2734 my_exit_jump();
4633a7c4 2735 /* NOTREACHED */
6224f72b 2736 case 3:
3280af22 2737 if (PL_restartop) {
febb3a6d 2738 PL_restartjmpenv = NULL;
533c011a 2739 PL_op = PL_restartop;
3280af22 2740 PL_restartop = 0;
312caa8e 2741 goto redo_body;
4633a7c4 2742 }
4aca2f62 2743 fail:
3280af22 2744 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2745 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2746 retval = 0;
2747 else {
2748 retval = 1;
3280af22 2749 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2750 }
312caa8e 2751 break;
4633a7c4
LW
2752 }
2753
14dd3ad8 2754 JMPENV_POP;
4633a7c4 2755 if (flags & G_DISCARD) {
3280af22 2756 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2757 retval = 0;
2758 FREETMPS;
2759 LEAVE;
2760 }
533c011a 2761 PL_op = oldop;
4633a7c4
LW
2762 return retval;
2763}
2764
954c1994
GS
2765/*
2766=for apidoc p||eval_pv
2767
2768Tells Perl to C<eval> the given string and return an SV* result.
2769
2770=cut
2771*/
2772
137443ea 2773SV*
864dbfa3 2774Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2775{
97aff369 2776 dVAR;
137443ea
PP
2777 dSP;
2778 SV* sv = newSVpv(p, 0);
2779
7918f24d
NC
2780 PERL_ARGS_ASSERT_EVAL_PV;
2781
864dbfa3 2782 eval_sv(sv, G_SCALAR);
137443ea
PP
2783 SvREFCNT_dec(sv);
2784
2785 SPAGAIN;
2786 sv = POPs;
2787 PUTBACK;
2788
2d8e6c8d 2789 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2790 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2791 }
137443ea
PP
2792
2793 return sv;
2794}
2795
4633a7c4
LW
2796/* Require a module. */
2797
954c1994 2798/*
ccfc67b7
JH
2799=head1 Embedding Functions
2800
954c1994
GS
2801=for apidoc p||require_pv
2802
7d3fb230
BS
2803Tells Perl to C<require> the file named by the string argument. It is
2804analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2805implemented that way; consider using load_module instead.
954c1994 2806
7d3fb230 2807=cut */
954c1994 2808
4633a7c4 2809void
864dbfa3 2810Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2811{
97aff369 2812 dVAR;
d3acc0f7 2813 dSP;
97aff369 2814 SV* sv;
7918f24d
NC
2815
2816 PERL_ARGS_ASSERT_REQUIRE_PV;
2817
e788e7d3 2818 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2819 PUTBACK;
be41e5d9
NC
2820 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2821 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2822 SPAGAIN;
2823 POPSTACK;
79072805
LW
2824}
2825
76e3520e 2826STATIC void
e1ec3a88 2827S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2828{
ab821d7f 2829 /* This message really ought to be max 23 lines.
75c72d73 2830 * Removed -h because the user already knows that option. Others? */
fb73857a 2831
1566c39d
NC
2832 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2833 minimum of 509 character string literals. */
27da23d5 2834 static const char * const usage_msg[] = {
1566c39d
NC
2835" -0[octal] specify record separator (\\0, if no argument)\n"
2836" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2837" -C[number/list] enables the listed Unicode features\n"
2838" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2839" -d[:debugger] run program under debugger\n"
2840" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2841" -e program one line of program (several -e's allowed, omit programfile)\n"
2842" -E program like -e, but enables all optional features\n"
2843" -f don't do $sitelib/sitecustomize.pl at startup\n"
2844" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2845" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2846" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2847" -l[octal] enable line ending processing, specifies line terminator\n"
2848" -[mM][-]module execute \"use/no module...\" before executing program\n"
2849" -n assume \"while (<>) { ... }\" loop around program\n"
2850" -p assume loop like -n but print line also, like sed\n"
2851" -s enable rudimentary parsing for switches after programfile\n"
2852" -S look for programfile using PATH environment variable\n",
2853" -t enable tainting warnings\n"
2854" -T enable tainting checks\n"
2855" -u dump core after parsing program\n"
2856" -U allow unsafe operations\n"
2857" -v print version, patchlevel and license\n"
2858" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2859" -w enable many useful warnings\n"
1566c39d
NC
2860" -W enable all warnings\n"
2861" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2862" -X disable all warnings\n"
2863" \n"
2864"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2865NULL
2866};
27da23d5 2867 const char * const *p = usage_msg;
1566c39d 2868 PerlIO *out = PerlIO_stdout();
fb73857a 2869
7918f24d
NC
2870 PERL_ARGS_ASSERT_USAGE;
2871
1566c39d
NC
2872 PerlIO_printf(out,
2873 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2874 name);
fb73857a 2875 while (*p)
1566c39d 2876 PerlIO_puts(out, *p++);
4633a7c4
LW
2877}
2878
b4ab917c
DM
2879/* convert a string of -D options (or digits) into an int.
2880 * sets *s to point to the char after the options */
2881
2882#ifdef DEBUGGING
2883int
e1ec3a88 2884Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2885{
27da23d5 2886 static const char * const usage_msgd[] = {
651b8f1a
NC
2887 " Debugging flag values: (see also -d)\n"
2888 " p Tokenizing and parsing (with v, displays parse stack)\n"
2889 " s Stack snapshots (with v, displays all stacks)\n"
2890 " l Context (loop) stack processing\n"
2891 " t Trace execution\n"
2892 " o Method and overloading resolution\n",
2893 " c String/numeric conversions\n"
2894 " P Print profiling info, source file input state\n"
2895 " m Memory and SV allocation\n"
2896 " f Format processing\n"
2897 " r Regular expression parsing and execution\n"
2898 " x Syntax tree dump\n",
2899 " u Tainting checks\n"
2900 " H Hash dump -- usurps values()\n"
2901 " X Scratchpad allocation\n"
2902 " D Cleaning up\n"
2903 " T Tokenising\n"
2904 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2905 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2906 " v Verbose: use in conjunction with other flags\n"
2907 " C Copy On Write\n"
2908 " A Consistency checks on internal structures\n"
2909 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2910 " M trace smart match resolution\n"
2911 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2912 NULL
2913 };
b4ab917c 2914 int i = 0;
7918f24d
NC
2915
2916 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2917
b4ab917c
DM
2918 if (isALPHA(**s)) {
2919 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2920 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2921
2922 for (; isALNUM(**s); (*s)++) {
c4420975 2923 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2924 if (d)
2925 i |= 1 << (d - debopts);
2926 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2927 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2928 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2929 }
2930 }
e6e64d9b 2931 else if (isDIGIT(**s)) {
b4ab917c
DM
2932 i = atoi(*s);
2933 for (; isALNUM(**s); (*s)++) ;
2934 }
ddcf8bc1 2935 else if (givehelp) {
06e869a4 2936 const char *const *p = usage_msgd;
651b8f1a 2937 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 2938 }
b4ab917c
DM
2939# ifdef EBCDIC
2940 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2941 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2942 "-Dp not implemented on this platform\n");
2943# endif
2944 return i;
2945}
2946#endif
2947
79072805
LW
2948/* This routine handles any switches that can be given during run */
2949
c7030b81
NC
2950const char *
2951Perl_moreswitches(pTHX_ const char *s)
79072805 2952{
27da23d5 2953 dVAR;
84c133a0 2954 UV rschar;
0544e6df 2955 const char option = *s; /* used to remember option in -m/-M code */
79072805 2956
7918f24d
NC
2957 PERL_ARGS_ASSERT_MORESWITCHES;
2958
79072805
LW
2959 switch (*s) {
2960 case '0':
a863c7d1 2961 {
f2095865 2962 I32 flags = 0;
a3b680e6 2963 STRLEN numlen;
f2095865
JH
2964
2965 SvREFCNT_dec(PL_rs);
2966 if (s[1] == 'x' && s[2]) {
a3b680e6 2967 const char *e = s+=2;
f2095865
JH
2968 U8 *tmps;
2969
a3b680e6
AL
2970 while (*e)
2971 e++;
f2095865
JH
2972 numlen = e - s;
2973 flags = PERL_SCAN_SILENT_ILLDIGIT;
2974 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2975 if (s + numlen < e) {
2976 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2977 numlen = 0;
2978 s--;
2979 }
396482e1 2980 PL_rs = newSVpvs("");
c5661c80 2981 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2982 tmps = (U8*)SvPVX(PL_rs);
2983 uvchr_to_utf8(tmps, rschar);
2984 SvCUR_set(PL_rs, UNISKIP(rschar));
2985 SvUTF8_on(PL_rs);
2986 }
2987 else {
2988 numlen = 4;
2989 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2990 if (rschar & ~((U8)~0))
2991 PL_rs = &PL_sv_undef;
2992 else if (!rschar && numlen >= 2)
396482e1 2993 PL_rs = newSVpvs("");
f2095865
JH
2994 else {
2995 char ch = (char)rschar;
2996 PL_rs = newSVpvn(&ch, 1);
2997 }
2998 }
64ace3f8 2999 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3000 return s + numlen;
a863c7d1 3001 }
46487f74 3002 case 'C':
a05d7ebb 3003 s++;
dd374669 3004 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3005 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3006 PL_utf8cache = -1;
46487f74 3007 return s;
2304df62 3008 case 'F':
3280af22 3009 PL_minus_F = TRUE;
ebce5377
RGS
3010 PL_splitstr = ++s;
3011 while (*s && !isSPACE(*s)) ++s;
e49e380e 3012 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3013 return s;
79072805 3014 case 'a':
3280af22 3015 PL_minus_a = TRUE;
79072805
LW
3016 s++;
3017 return s;
3018 case 'c':
3280af22 3019 PL_minus_c = TRUE;
79072805
LW
3020 s++;
3021 return s;
3022 case 'd':
f20b2998 3023 forbid_setid('d', FALSE);
4633a7c4 3024 s++;
2cbb2ee1
RGS
3025
3026 /* -dt indicates to the debugger that threads will be used */
3027 if (*s == 't' && !isALNUM(s[1])) {
3028 ++s;
3029 my_setenv("PERL5DB_THREADED", "1");
3030 }
3031
70c94a19
RR
3032 /* The following permits -d:Mod to accepts arguments following an =
3033 in the fashion that -MSome::Mod does. */
3034 if (*s == ':' || *s == '=') {
f85893a1
NC
3035 const char *start = ++s;
3036 const char *const end = s + strlen(s);
396482e1 3037 SV * const sv = newSVpvs("use Devel::");
f85893a1 3038
70c94a19
RR
3039 /* We now allow -d:Module=Foo,Bar */
3040 while(isALNUM(*s) || *s==':') ++s;
3041 if (*s != '=')
f85893a1 3042 sv_catpvn(sv, start, end - start);
70c94a19
RR
3043 else {
3044 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3045 /* Don't use NUL as q// delimiter here, this string goes in the
3046 * environment. */
3047 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3048 }
f85893a1 3049 s = end;
184f32ec 3050 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3051 SvREFCNT_dec(sv);
4633a7c4 3052 }
ed094faf 3053 if (!PL_perldb) {
3280af22 3054 PL_perldb = PERLDB_ALL;
a0d0e21e 3055 init_debugger();
ed094faf 3056 }
79072805
LW
3057 return s;
3058 case 'D':
0453d815 3059 {
79072805 3060#ifdef DEBUGGING
f20b2998 3061 forbid_setid('D', FALSE);
b4ab917c 3062 s++;
dd374669 3063 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3064#else /* !DEBUGGING */
0453d815 3065 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3066 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3067 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3068 for (s++; isALNUM(*s); s++) ;
79072805 3069#endif
79072805 3070 return s;
0453d815 3071 }
4633a7c4 3072 case 'h':
ac27b0f5 3073 usage(PL_origargv[0]);
7ca617d0 3074 my_exit(0);
79072805 3075 case 'i':
43c5f42d 3076 Safefree(PL_inplace);
c030f24b
GH
3077#if defined(__CYGWIN__) /* do backup extension automagically */
3078 if (*(s+1) == '\0') {
c86a4f2e 3079 PL_inplace = savepvs(".bak");
c030f24b
GH
3080 return s+1;
3081 }
3082#endif /* __CYGWIN__ */
5ef5d758 3083 {
d4c19fe8 3084 const char * const start = ++s;
5ef5d758
NC
3085 while (*s && !isSPACE(*s))
3086 ++s;
3087
3088 PL_inplace = savepvn(start, s - start);
3089 }
7b8d334a 3090 if (*s) {
5ef5d758 3091 ++s;
7b8d334a 3092 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3093 s++;
7b8d334a 3094 }
fb73857a 3095 return s;
4e49a025 3096 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3097 forbid_setid('I', FALSE);
fb73857a
PP
3098 ++s;
3099 while (*s && isSPACE(*s))
3100 ++s;
3101 if (*s) {
c7030b81 3102 const char *e, *p;
0df16ed7
GS
3103 p = s;
3104 /* ignore trailing spaces (possibly followed by other switches) */
3105 do {
3106 for (e = p; *e && !isSPACE(*e); e++) ;
3107 p = e;
3108 while (isSPACE(*p))
3109 p++;
3110 } while (*p && *p != '-');
55b4bc1c 3111 incpush(s, e-s,
e28f3139 3112 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3113 s = p;
3114 if (*s == '-')
3115 s++;
79072805
LW
3116 }
3117 else
a67e862a 3118 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3119 return s;
79072805 3120 case 'l':
3280af22 3121 PL_minus_l = TRUE;
79072805 3122 s++;
7889fe52
NIS
3123 if (PL_ors_sv) {
3124 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3125 PL_ors_sv = NULL;
7889fe52 3126 }
79072805 3127 if (isDIGIT(*s)) {
53305cf1 3128 I32 flags = 0;
a3b680e6 3129 STRLEN numlen;
396482e1 3130 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3131 numlen = 3 + (*s == '0');
3132 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3133 s += numlen;
3134 }
3135 else {
8bfdd7d9 3136 if (RsPARA(PL_rs)) {
396482e1 3137 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3138 }
3139 else {
8bfdd7d9 3140 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3141 }
79072805
LW
3142 }
3143 return s;
1a30305b 3144 case 'M':
f20b2998 3145 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3146 /* FALL THROUGH */
3147 case 'm':
f20b2998 3148 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3149 if (*++s) {
c7030b81 3150 const char *start;
b64cb68c 3151 const char *end;
11343788 3152 SV *sv;
e1ec3a88 3153 const char *use = "use ";
0544e6df 3154 bool colon = FALSE;
a5f75d66 3155 /* -M-foo == 'no foo' */
d0043bd1
NC
3156 /* Leading space on " no " is deliberate, to make both
3157 possibilities the same length. */
3158 if (*s == '-') { use = " no "; ++s; }
3159 sv = newSVpvn(use,4);
a5f75d66 3160 start = s;
1a30305b 3161 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3162 while(isALNUM(*s) || *s==':') {
3163 if( *s++ == ':' ) {
3164 if( *s == ':' )
3165 s++;
3166 else
3167 colon = TRUE;
3168 }
3169 }
3170 if (s == start)
3171 Perl_croak(aTHX_ "Module name required with -%c option",
3172 option);
3173 if (colon)
3174 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3175 "contains single ':'",
63da6837 3176 (int)(s - start), start, option);
b64cb68c 3177 end = s + strlen(s);
c07a80fd 3178 if (*s != '=') {
b64cb68c 3179 sv_catpvn(sv, start, end - start);
0544e6df 3180 if (option == 'm') {
c07a80fd 3181 if (*s != '\0')
cea2e8a9 3182 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3183 sv_catpvs( sv, " ()");
c07a80fd
PP
3184 }
3185 } else {
11343788 3186 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3187 /* Use NUL as q''-delimiter. */
3188 sv_catpvs(sv, " split(/,/,q\0");
3189 ++s;
3190 sv_catpvn(sv, s, end - s);
396482e1 3191 sv_catpvs(sv, "\0)");
c07a80fd 3192 }
b64cb68c 3193 s = end;
29a861e7 3194 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3195 }
3196 else
0544e6df 3197 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3198 return s;
79072805 3199 case 'n':
3280af22 3200 PL_minus_n = TRUE;
79072805
LW
3201 s++;
3202 return s;
3203 case 'p':
3280af22 3204 PL_minus_p = TRUE;
79072805
LW
3205 s++;
3206 return s;
3207 case 's':
f20b2998 3208 forbid_setid('s', FALSE);
3280af22 3209 PL_doswitches = TRUE;
79072805
LW
3210 s++;
3211 return s;
6537fe72
MS
3212 case 't':
3213 if (!PL_tainting)
22f7c9c9 3214 TOO_LATE_FOR('t');
6537fe72
MS
3215 s++;
3216 return s;
463ee0b2 3217 case 'T':
3280af22 3218 if (!PL_tainting)
22f7c9c9 3219 TOO_LATE_FOR('T');
463ee0b2
LW
3220 s++;
3221 return s;
79072805 3222 case 'u':
3280af22 3223 PL_do_undump = TRUE;
79072805
LW
3224 s++;
3225 return s;
3226 case 'U':
3280af22 3227 PL_unsafe = TRUE;
79072805
LW
3228 s++;
3229 return s;
3230 case 'v':
d7aa5382 3231 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3232 upg_version(PL_patchlevel, TRUE);
8e9464f1 3233#if !defined(DGUX)
46807d8e
YO
3234 {
3235 SV* level= vstringify(PL_patchlevel);
3236#ifdef PERL_PATCHNUM
23d483e2
NC
3237# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3238 SV *num = newSVpvs(PERL_PATCHNUM "*");
3239# else
3240 SV *num = newSVpvs(PERL_PATCHNUM);
3241# endif
46807d8e
YO
3242
3243 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3244 SvREFCNT_dec(level);
3245 level= num;
3246 } else {
d0a9311f 3247 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3248 SvREFCNT_dec(num);
3249 }
3250 #endif
3251 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3252 "\nThis is perl " STRINGIFY(PERL_REVISION)
3253 ", version " STRINGIFY(PERL_VERSION)
3254 ", subversion " STRINGIFY(PERL_SUBVERSION)
3255 " (%"SVf") built for " ARCHNAME, level
3256 );
46807d8e
YO
3257 SvREFCNT_dec(level);
3258 }
8e9464f1
JH
3259#else /* DGUX */
3260/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3261 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3262 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3263 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3264 PerlIO_printf(PerlIO_stdout(),
3265 Perl_form(aTHX_ " built under %s at %s %s\n",
3266 OSNAME, __DATE__, __TIME__));
3267 PerlIO_printf(PerlIO_stdout(),
3268 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3269 OSVERS));
8e9464f1 3270#endif /* !DGUX */
fb73857a
PP
3271#if defined(LOCAL_PATCH_COUNT)
3272 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3273 PerlIO_printf(PerlIO_stdout(),
3274 "\n(with %d registered patch%s, "
3275 "see perl -V for more detail)",
bb7a0f54 3276 LOCAL_PATCH_COUNT,
b0e47665 3277 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3278#endif
1a30305b 3279
b0e47665 3280 PerlIO_printf(PerlIO_stdout(),
32709fdf 3281 "\n\nCopyright 1987-2010, Larry Wall\n");
79072805 3282#ifdef MSDOS
b0e47665
GS
3283 PerlIO_printf(PerlIO_stdout(),
3284 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3285#endif
3286#ifdef DJGPP
b0e47665
GS
3287 PerlIO_printf(PerlIO_stdout(),
3288 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3289 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3290#endif
79072805 3291#ifdef OS2
b0e47665
GS
3292 PerlIO_printf(PerlIO_stdout(),
3293 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3294 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3295#endif
79072805 3296#ifdef atarist
b0e47665
GS
3297 PerlIO_printf(PerlIO_stdout(),
3298 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3299#endif
a3f9223b 3300#ifdef __BEOS__
b0e47665
GS
3301 PerlIO_printf(PerlIO_stdout(),
3302 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3303#endif
1d84e8df 3304#ifdef MPE
b0e47665 3305 PerlIO_printf(PerlIO_stdout(),
e583a879 3306 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3307#endif
9d116dd7 3308#ifdef OEMVS
b0e47665
GS
3309 PerlIO_printf(PerlIO_stdout(),
3310 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3311#endif
495c5fdc 3312#ifdef __VOS__
b0e47665 3313 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3314 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3315#endif
092bebab 3316#ifdef __OPEN_VM
b0e47665
GS
3317 PerlIO_printf(PerlIO_stdout(),
3318 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3319#endif
a1a0e61e 3320#ifdef POSIX_BC
b0e47665
GS
3321 PerlIO_printf(PerlIO_stdout(),
3322 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3323#endif
f83d2536 3324#ifdef EPOC
b0e47665 3325 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3326 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3327#endif
e1caacb4 3328#ifdef UNDER_CE
b475b3e6
JH
3329 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3330 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3331 wce_hitreturn();
3332#endif
a0fd4948 3333#ifdef __SYMBIAN32__
27da23d5
JH
3334 PerlIO_printf(PerlIO_stdout(),
3335 "Symbian port by Nokia, 2004-2005\n");
3336#endif
baed7233
DL
3337#ifdef BINARY_BUILD_NOTICE
3338 BINARY_BUILD_NOTICE;
3339#endif
b0e47665
GS
3340 PerlIO_printf(PerlIO_stdout(),
3341 "\n\
79072805 3342Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3343GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3344Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3345this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3346Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3347 my_exit(0);
79072805 3348 case 'w':
b2e5e6ba 3349 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3350 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3351 }
599cee73
PM
3352 s++;
3353 return s;
3354 case 'W':
ac27b0f5 3355 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3356 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3357 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3358 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3359 s++;
3360 return s;
3361 case 'X':
ac27b0f5 3362 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3363 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3364 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3365 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3366 s++;
3367 return s;
a0d0e21e 3368 case '*':
79072805 3369 case ' ':
d3133c89
NC
3370 while( *s == ' ' )
3371 ++s;
3372 if (s[0] == '-') /* Additional switches on #! line. */
3373 return s+1;
79072805 3374 break;
a0d0e21e 3375 case '-':
79072805 3376 case 0:
51882d45 3377#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3378 case '\r':
3379#endif
79072805
LW
3380 case '\n':
3381 case '\t':
3382 break;
aa689395
PP
3383#ifdef ALTERNATE_SHEBANG
3384 case 'S': /* OS/2 needs -S on "extproc" line. */
3385 break;
3386#endif
79072805 3387 default:
cea2e8a9 3388 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3389 }
bd61b366 3390 return NULL;
79072805
LW
3391}
3392
3393/* compliments of Tom Christiansen */
3394
3395/* unexec() can be found in the Gnu emacs distribution */
ee580363 3396/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3397
3398void
864dbfa3 3399Perl_my_unexec(pTHX)
79072805 3400{
b37c2d43 3401 PERL_UNUSED_CONTEXT;
79072805 3402#ifdef UNEXEC
b37c2d43
AL
3403 SV * prog = newSVpv(BIN_EXP, 0);
3404 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3405 int status = 1;
79072805
LW
3406 extern int etext;
3407
396482e1 3408 sv_catpvs(prog, "/perl");
396482e1 3409 sv_catpvs(file, ".perldump");
79072805 3410
ee580363
GS
3411 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3412 /* unexec prints msg to stderr in case of failure */
6ad3d225 3413 PerlProc_exit(status);
79072805 3414#else
a5f75d66
AD
3415# ifdef VMS
3416# include <lib$routines.h>
3417 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3418# elif defined(WIN32) || defined(__CYGWIN__)
3419 Perl_croak(aTHX_ "dump is not supported");
aa689395 3420# else
79072805 3421 ABORT(); /* for use with undump */
aa689395 3422# endif
a5f75d66 3423#endif
79072805
LW
3424}
3425
cb68f92d
GS
3426/* initialize curinterp */
3427STATIC void
cea2e8a9 3428S_init_interp(pTHX)
cb68f92d 3429{
97aff369 3430 dVAR;
acfe0abc
GS
3431#ifdef MULTIPLICITY
3432# define PERLVAR(var,type)
3433# define PERLVARA(var,n,type)
3434# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3435# define PERLVARI(var,type,init) aTHX->var = init;
3436# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3437# else
acfe0abc
GS
3438# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3439# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3440# endif
acfe0abc 3441# include "intrpvar.h"
acfe0abc
GS
3442# undef PERLVAR
3443# undef PERLVARA
3444# undef PERLVARI
3445# undef PERLVARIC
3446#else
3447# define PERLVAR(var,type)
3448# define PERLVARA(var,n,type)
3449# define PERLVARI(var,type,init) PL_##var = init;
3450# define PERLVARIC(var,type,init) PL_##var = init;
3451# include "intrpvar.h"
acfe0abc
GS
3452# undef PERLVAR
3453# undef PERLVARA
3454# undef PERLVARI
3455# undef PERLVARIC
cb68f92d
GS
3456#endif
3457
46ab3289
NC
3458 /* As these are inside a structure, PERLVARI isn't capable of initialising
3459 them */
6c3f0a89
NC
3460 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3461 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3462}
3463
76e3520e 3464STATIC void
cea2e8a9 3465S_init_main_stash(pTHX)
79072805 3466{
97aff369 3467 dVAR;
463ee0b2 3468 GV *gv;
6e72f9df 3469
3280af22 3470 PL_curstash = PL_defstash = newHV();
23579a14
NC
3471 /* We know that the string "main" will be in the global shared string
3472 table, so it's a small saving to use it rather than allocate another
3473 8 bytes. */
18916d0d 3474 PL_curstname = newSVpvs_share("main");
fafc274c 3475 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3476 /* If we hadn't caused another reference to "main" to be in the shared
3477 string table above, then it would be worth reordering these two,
3478 because otherwise all we do is delete "main" from it as a consequence
3479 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3480 SvREFCNT_dec(GvHV(gv));
23579a14 3481 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3482 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3483 SvREADONLY_on(gv);
fafc274c
NC
3484 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3485 SVt_PVAV)));
5a5094bd 3486 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3487 GvMULTI_on(PL_incgv);
fafc274c 3488 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3489 GvMULTI_on(PL_hintgv);
fafc274c 3490 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3491 SvREFCNT_inc_simple_void(PL_defgv);
fafc274c 3492 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5a5094bd 3493 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3494 GvMULTI_on(PL_errgv);
fafc274c 3495 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22