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CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
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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 *
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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. */
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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);
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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
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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;
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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;
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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 *
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159perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
160 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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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;
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GS
174 PL_MemShared = ipMS;
175 PL_MemParse = ipMP;
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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
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184 return my_perl;
185}
186#else
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GS
187
188/*
ccfc67b7
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189=head1 Embedding Functions
190
954c1994
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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);
9ebf26ad
FR
560 if (PL_endav && !PL_minus_c) {
561 PL_phase = PERL_PHASE_END;
f3faeb53 562 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 563 }
f3faeb53 564 JMPENV_POP;
26f423df 565 }
f3faeb53 566 LEAVE;
a0d0e21e 567 FREETMPS;
3d22c4f0 568 assert(PL_scopestack_ix == 0);
a0d0e21e 569
e00b64d4 570 /* Need to flush since END blocks can produce output */
f13a2bc0 571 my_fflush_all();
e00b64d4 572
16c91539 573 if (PL_threadhook(aTHX)) {
62375a60 574 /* Threads hook has vetoed further cleanup */
c301d606 575 PL_veto_cleanup = TRUE;
37038d91 576 return STATUS_EXIT;
62375a60
NIS
577 }
578
2aa47728
NC
579#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
580 if (destruct_level != 0) {
581 /* Fork here to create a child. Our child's job is to preserve the
582 state of scalars prior to destruction, so that we can instruct it
583 to dump any scalars that we later find have leaked.
584 There's no subtlety in this code - it assumes POSIX, and it doesn't
585 fail gracefully */
586 int fd[2];
587
588 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
589 perror("Debug leaking scalars socketpair failed");
590 abort();
591 }
592
593 child = fork();
594 if(child == -1) {
595 perror("Debug leaking scalars fork failed");
596 abort();
597 }
598 if (!child) {
599 /* We are the child */
3125a5a4
NC
600 const int sock = fd[1];
601 const int debug_fd = PerlIO_fileno(Perl_debug_log);
602 int f;
808ad2d0
NC
603 const char *where;
604 /* Our success message is an integer 0, and a char 0 */
b61433a9 605 static const char success[sizeof(int) + 1] = {0};
3125a5a4 606
2aa47728 607 close(fd[0]);
2aa47728 608
3125a5a4
NC
609 /* We need to close all other file descriptors otherwise we end up
610 with interesting hangs, where the parent closes its end of a
611 pipe, and sits waiting for (another) child to terminate. Only
612 that child never terminates, because it never gets EOF, because
bf357333
NC
613 we also have the far end of the pipe open. We even need to
614 close the debugging fd, because sometimes it happens to be one
615 end of a pipe, and a process is waiting on the other end for
616 EOF. Normally it would be closed at some point earlier in
617 destruction, but if we happen to cause the pipe to remain open,
618 EOF never occurs, and we get an infinite hang. Hence all the
619 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
620
621 f = sysconf(_SC_OPEN_MAX);
622 if(f < 0) {
808ad2d0
NC
623 where = "sysconf failed";
624 goto abort;
3125a5a4
NC
625 }
626 while (f--) {
627 if (f == sock)
628 continue;
3125a5a4
NC
629 close(f);
630 }
631
2aa47728
NC
632 while (1) {
633 SV *target;
bf357333
NC
634 union control_un control;
635 struct msghdr msg;
636 struct iovec vec[1];
637 struct cmsghdr *cmptr;
638 ssize_t got;
639 int got_fd;
640
641 msg.msg_control = control.control;
642 msg.msg_controllen = sizeof(control.control);
643 /* We're a connected socket so we don't need a source */
644 msg.msg_name = NULL;
645 msg.msg_namelen = 0;
646 msg.msg_iov = vec;
647 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
648
649 vec[0].iov_base = (void*)&target;
650 vec[0].iov_len = sizeof(target);
651
652 got = recvmsg(sock, &msg, 0);
2aa47728
NC
653
654 if(got == 0)
655 break;
656 if(got < 0) {
808ad2d0
NC
657 where = "recv failed";
658 goto abort;
2aa47728
NC
659 }
660 if(got < sizeof(target)) {
808ad2d0
NC
661 where = "short recv";
662 goto abort;
2aa47728 663 }
bf357333 664
808ad2d0
NC
665 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
666 where = "no cmsg";
667 goto abort;
668 }
669 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
670 where = "wrong cmsg_len";
671 goto abort;
672 }
673 if(cmptr->cmsg_level != SOL_SOCKET) {
674 where = "wrong cmsg_level";
675 goto abort;
676 }
677 if(cmptr->cmsg_type != SCM_RIGHTS) {
678 where = "wrong cmsg_type";
679 goto abort;
680 }
bf357333
NC
681
682 got_fd = *(int*)CMSG_DATA(cmptr);
683 /* For our last little bit of trickery, put the file descriptor
684 back into Perl_debug_log, as if we never actually closed it
685 */
808ad2d0
NC
686 if(got_fd != debug_fd) {
687 if (dup2(got_fd, debug_fd) == -1) {
688 where = "dup2";
689 goto abort;
690 }
691 }
2aa47728 692 sv_dump(target);
bf357333 693
2aa47728
NC
694 PerlIO_flush(Perl_debug_log);
695
808ad2d0 696 got = write(sock, &success, sizeof(success));
2aa47728
NC
697
698 if(got < 0) {
808ad2d0
NC
699 where = "write failed";
700 goto abort;
2aa47728 701 }
808ad2d0
NC
702 if(got < sizeof(success)) {
703 where = "short write";
704 goto abort;
2aa47728
NC
705 }
706 }
707 _exit(0);
808ad2d0
NC
708 abort:
709 {
710 int send_errno = errno;
711 unsigned char length = (unsigned char) strlen(where);
712 struct iovec failure[3] = {
713 {(void*)&send_errno, sizeof(send_errno)},
714 {&length, 1},
715 {(void*)where, length}
716 };
717 int got = writev(sock, failure, 3);
718 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
719 in the parent if we try to read from the socketpair after the
720 child has exited, even if there was data to read.
721 So sleep a bit to give the parent a fighting chance of
722 reading the data. */
723 sleep(2);
724 _exit((got == -1) ? errno : 0);
725 }
bf357333 726 /* End of child. */
2aa47728 727 }
41e4abd8 728 PL_dumper_fd = fd[0];
2aa47728
NC
729 close(fd[1]);
730 }
731#endif
732
ff0cee69
PP
733 /* We must account for everything. */
734
735 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
736 /* Do this now, because destroying ops can cause new SVs to be generated
737 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
738 PL_curcop to point to a valid op from which the filename structure
739 member is copied. */
740 PL_curcop = &PL_compiling;
3280af22 741 if (PL_main_root) {
4e380990
DM
742 /* ensure comppad/curpad to refer to main's pad */
743 if (CvPADLIST(PL_main_cv)) {
744 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
745 }
3280af22 746 op_free(PL_main_root);
5f66b61c 747 PL_main_root = NULL;
a0d0e21e 748 }
5f66b61c 749 PL_main_start = NULL;
aac9d523
DM
750 /* note that PL_main_cv isn't usually actually freed at this point,
751 * due to the CvOUTSIDE refs from subs compiled within it. It will
752 * get freed once all the subs are freed in sv_clean_all(), for
753 * destruct_level > 0 */
3280af22 754 SvREFCNT_dec(PL_main_cv);
601f1833 755 PL_main_cv = NULL;
9ebf26ad 756 PL_phase = PERL_PHASE_DESTRUCT;
ff0cee69 757
13621cfb
NIS
758 /* Tell PerlIO we are about to tear things apart in case
759 we have layers which are using resources that should
760 be cleaned up now.
761 */
762
763 PerlIO_destruct(aTHX);
764
3280af22 765 if (PL_sv_objcount) {
a0d0e21e
LW
766 /*
767 * Try to destruct global references. We do this first so that the
768 * destructors and destructees still exist. Some sv's might remain.
769 * Non-referenced objects are on their own.
770 */
a0d0e21e 771 sv_clean_objs();
bf9cdc68 772 PL_sv_objcount = 0;
8990e307
LW
773 }
774
5cd24f17 775 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 776 SvREFCNT_dec(PL_warnhook);
a0714e2c 777 PL_warnhook = NULL;
3280af22 778 SvREFCNT_dec(PL_diehook);
a0714e2c 779 PL_diehook = NULL;
5cd24f17 780
4b556e6c 781 /* call exit list functions */
3280af22 782 while (PL_exitlistlen-- > 0)
acfe0abc 783 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 784
3280af22 785 Safefree(PL_exitlist);
4b556e6c 786
1c4916e5
CB
787 PL_exitlist = NULL;
788 PL_exitlistlen = 0;
789
a3e6e81e
NC
790 SvREFCNT_dec(PL_registered_mros);
791
551a8b83 792 /* jettison our possibly duplicated environment */
4b647fb0
DM
793 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
794 * so we certainly shouldn't free it here
795 */
2f42fcb0 796#ifndef PERL_MICRO
4b647fb0 797#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 798 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
799#ifdef USE_ITHREADS
800 /* only main thread can free environ[0] contents */
801 && PL_curinterp == aTHX
802#endif
803 )
804 {
551a8b83
JH
805 I32 i;
806
807 for (i = 0; environ[i]; i++)
4b420006 808 safesysfree(environ[i]);
0631ea03 809
4b420006
JH
810 /* Must use safesysfree() when working with environ. */
811 safesysfree(environ);
551a8b83
JH
812
813 environ = PL_origenviron;
814 }
815#endif
2f42fcb0 816#endif /* !PERL_MICRO */
551a8b83 817
30985c42
JH
818 if (destruct_level == 0) {
819
820 DEBUG_P(debprofdump());
821
822#if defined(PERLIO_LAYERS)
823 /* No more IO - including error messages ! */
824 PerlIO_cleanup(aTHX);
825#endif
826
827 CopFILE_free(&PL_compiling);
828 CopSTASH_free(&PL_compiling);
829
830 /* The exit() function will do everything that needs doing. */
831 return STATUS_EXIT;
832 }
833
5f8cb046
DM
834#ifdef USE_ITHREADS
835 /* the syntax tree is shared between clones
836 * so op_free(PL_main_root) only ReREFCNT_dec's
837 * REGEXPs in the parent interpreter
838 * we need to manually ReREFCNT_dec for the clones
839 */
5f8cb046 840 SvREFCNT_dec(PL_regex_padav);
7d49f689 841 PL_regex_padav = NULL;
5f8cb046
DM
842 PL_regex_pad = NULL;
843#endif
844
ad64d0ec 845 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
846 PL_stashcache = NULL;
847
5f05dabc
PP
848 /* loosen bonds of global variables */
849
2f9285f8
DM
850 /* XXX can PL_parser still be non-null here? */
851 if(PL_parser && PL_parser->rsfp) {
852 (void)PerlIO_close(PL_parser->rsfp);
853 PL_parser->rsfp = NULL;
8ebc5c01
PP
854 }
855
84386e14
RGS
856 if (PL_minus_F) {
857 Safefree(PL_splitstr);
858 PL_splitstr = NULL;
859 }
860
8ebc5c01 861 /* switches */
3280af22
NIS
862 PL_minus_n = FALSE;
863 PL_minus_p = FALSE;
864 PL_minus_l = FALSE;
865 PL_minus_a = FALSE;
866 PL_minus_F = FALSE;
867 PL_doswitches = FALSE;
599cee73 868 PL_dowarn = G_WARN_OFF;
3280af22 869 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
870 PL_unsafe = FALSE;
871
872 Safefree(PL_inplace);
bd61b366 873 PL_inplace = NULL;
a7cb1f99 874 SvREFCNT_dec(PL_patchlevel);
1e8125c6 875 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
876
877 if (PL_e_script) {
878 SvREFCNT_dec(PL_e_script);
a0714e2c 879 PL_e_script = NULL;
8ebc5c01
PP
880 }
881
bf9cdc68
RG
882 PL_perldb = 0;
883
8ebc5c01
PP
884 /* magical thingies */
885
e23d9e2f
CS
886 SvREFCNT_dec(PL_ofsgv); /* *, */
887 PL_ofsgv = NULL;
5f05dabc 888
7889fe52 889 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 890 PL_ors_sv = NULL;
8ebc5c01 891
3280af22 892 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 893 PL_rs = NULL;
dc92893f 894
d33b2eba 895 Safefree(PL_osname); /* $^O */
bd61b366 896 PL_osname = NULL;
5f05dabc 897
3280af22 898 SvREFCNT_dec(PL_statname);
a0714e2c
SS
899 PL_statname = NULL;
900 PL_statgv = NULL;
5f05dabc 901
8ebc5c01
PP
902 /* defgv, aka *_ should be taken care of elsewhere */
903
8ebc5c01 904 /* clean up after study() */
3280af22 905 SvREFCNT_dec(PL_lastscream);
a0714e2c 906 PL_lastscream = NULL;
3280af22
NIS
907 Safefree(PL_screamfirst);
908 PL_screamfirst = 0;
909 Safefree(PL_screamnext);
910 PL_screamnext = 0;
8ebc5c01 911
7d5ea4e7
GS
912 /* float buffer */
913 Safefree(PL_efloatbuf);
bd61b366 914 PL_efloatbuf = NULL;
7d5ea4e7
GS
915 PL_efloatsize = 0;
916
8ebc5c01 917 /* startup and shutdown function lists */
3280af22 918 SvREFCNT_dec(PL_beginav);
5a837c8f 919 SvREFCNT_dec(PL_beginav_save);
3280af22 920 SvREFCNT_dec(PL_endav);
7d30b5c4 921 SvREFCNT_dec(PL_checkav);
ece599bd 922 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
923 SvREFCNT_dec(PL_unitcheckav);
924 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 925 SvREFCNT_dec(PL_initav);
7d49f689
NC
926 PL_beginav = NULL;
927 PL_beginav_save = NULL;
928 PL_endav = NULL;
929 PL_checkav = NULL;
930 PL_checkav_save = NULL;
3c10abe3
AG
931 PL_unitcheckav = NULL;
932 PL_unitcheckav_save = NULL;
7d49f689 933 PL_initav = NULL;
5618dfe8 934
8ebc5c01 935 /* shortcuts just get cleared */
a0714e2c
SS
936 PL_envgv = NULL;
937 PL_incgv = NULL;
938 PL_hintgv = NULL;
939 PL_errgv = NULL;
940 PL_argvgv = NULL;
941 PL_argvoutgv = NULL;
942 PL_stdingv = NULL;
943 PL_stderrgv = NULL;
944 PL_last_in_gv = NULL;
945 PL_replgv = NULL;
946 PL_DBgv = NULL;
947 PL_DBline = NULL;
948 PL_DBsub = NULL;
949 PL_DBsingle = NULL;
950 PL_DBtrace = NULL;
951 PL_DBsignal = NULL;
601f1833 952 PL_DBcv = NULL;
7d49f689 953 PL_dbargs = NULL;
5c284bb0 954 PL_debstash = NULL;
8ebc5c01 955
7a1c5554 956 SvREFCNT_dec(PL_argvout_stack);
7d49f689 957 PL_argvout_stack = NULL;
8ebc5c01 958
5c831c24 959 SvREFCNT_dec(PL_modglobal);
5c284bb0 960 PL_modglobal = NULL;
5c831c24 961 SvREFCNT_dec(PL_preambleav);
7d49f689 962 PL_preambleav = NULL;
5c831c24 963 SvREFCNT_dec(PL_subname);
a0714e2c 964 PL_subname = NULL;
ca0c25f6 965#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 966 SvREFCNT_dec(PL_pidstatus);
5c284bb0 967 PL_pidstatus = NULL;
ca0c25f6 968#endif
5c831c24 969 SvREFCNT_dec(PL_toptarget);
a0714e2c 970 PL_toptarget = NULL;
5c831c24 971 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
972 PL_bodytarget = NULL;
973 PL_formtarget = NULL;
5c831c24 974
d33b2eba 975 /* free locale stuff */
b9582b6a 976#ifdef USE_LOCALE_COLLATE
d33b2eba 977 Safefree(PL_collation_name);
bd61b366 978 PL_collation_name = NULL;
b9582b6a 979#endif
d33b2eba 980
b9582b6a 981#ifdef USE_LOCALE_NUMERIC
d33b2eba 982 Safefree(PL_numeric_name);
bd61b366 983 PL_numeric_name = NULL;
a453c169 984 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 985 PL_numeric_radix_sv = NULL;
b9582b6a 986#endif
d33b2eba 987
5c831c24
GS
988 /* clear utf8 character classes */
989 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
990 SvREFCNT_dec(PL_utf8_ascii);
991 SvREFCNT_dec(PL_utf8_alpha);
992 SvREFCNT_dec(PL_utf8_space);
993 SvREFCNT_dec(PL_utf8_cntrl);
994 SvREFCNT_dec(PL_utf8_graph);
995 SvREFCNT_dec(PL_utf8_digit);
996 SvREFCNT_dec(PL_utf8_upper);
997 SvREFCNT_dec(PL_utf8_lower);
998 SvREFCNT_dec(PL_utf8_print);
999 SvREFCNT_dec(PL_utf8_punct);
1000 SvREFCNT_dec(PL_utf8_xdigit);
1001 SvREFCNT_dec(PL_utf8_mark);
1002 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1003 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1004 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1005 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1006 SvREFCNT_dec(PL_utf8_idstart);
1007 SvREFCNT_dec(PL_utf8_idcont);
2726813d 1008 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 1009 PL_utf8_alnum = NULL;
a0714e2c
SS
1010 PL_utf8_ascii = NULL;
1011 PL_utf8_alpha = NULL;
1012 PL_utf8_space = NULL;
1013 PL_utf8_cntrl = NULL;
1014 PL_utf8_graph = NULL;
1015 PL_utf8_digit = NULL;
1016 PL_utf8_upper = NULL;
1017 PL_utf8_lower = NULL;
1018 PL_utf8_print = NULL;
1019 PL_utf8_punct = NULL;
1020 PL_utf8_xdigit = NULL;
1021 PL_utf8_mark = NULL;
1022 PL_utf8_toupper = NULL;
1023 PL_utf8_totitle = NULL;
1024 PL_utf8_tolower = NULL;
1025 PL_utf8_tofold = NULL;
1026 PL_utf8_idstart = NULL;
1027 PL_utf8_idcont = NULL;
2726813d 1028 PL_utf8_foldclosures = NULL;
5c831c24 1029
971a9dd3 1030 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1031 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1032 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1033 cophh_free(CopHINTHASH_get(&PL_compiling));
1034 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3
NIS
1035 CopFILE_free(&PL_compiling);
1036 CopSTASH_free(&PL_compiling);
5c831c24 1037
a0d0e21e 1038 /* Prepare to destruct main symbol table. */
5f05dabc 1039
3280af22 1040 hv = PL_defstash;
ca556bcd
DM
1041 /* break ref loop *:: <=> %:: */
1042 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1043 PL_defstash = 0;
a0d0e21e 1044 SvREFCNT_dec(hv);
5c831c24 1045 SvREFCNT_dec(PL_curstname);
a0714e2c 1046 PL_curstname = NULL;
a0d0e21e 1047
5a844595
GS
1048 /* clear queued errors */
1049 SvREFCNT_dec(PL_errors);
a0714e2c 1050 PL_errors = NULL;
5a844595 1051
dd69841b
BB
1052 SvREFCNT_dec(PL_isarev);
1053
a0d0e21e 1054 FREETMPS;
9b387841 1055 if (destruct_level >= 2) {
3280af22 1056 if (PL_scopestack_ix != 0)
9b387841
NC
1057 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1058 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1059 (long)PL_scopestack_ix);
3280af22 1060 if (PL_savestack_ix != 0)
9b387841
NC
1061 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1062 "Unbalanced saves: %ld more saves than restores\n",
1063 (long)PL_savestack_ix);
3280af22 1064 if (PL_tmps_floor != -1)
9b387841
NC
1065 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1066 (long)PL_tmps_floor + 1);
a0d0e21e 1067 if (cxstack_ix != -1)
9b387841
NC
1068 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1069 (long)cxstack_ix + 1);
a0d0e21e 1070 }
8990e307 1071
776df701 1072#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1073 /* the entries in this list are allocated via SV PVX's, so get freed
1074 * in sv_clean_all */
1075 Safefree(PL_my_cxt_list);
776df701 1076#endif
57bb2458 1077
8990e307 1078 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1079
1080 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1081 while (sv_clean_all() > 2)
5226ed68
JH
1082 ;
1083
d4777f27
GS
1084 AvREAL_off(PL_fdpid); /* no surviving entries */
1085 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1086 PL_fdpid = NULL;
d33b2eba 1087
6c644e78
GS
1088#ifdef HAVE_INTERP_INTERN
1089 sys_intern_clear();
1090#endif
1091
6e72f9df
PP
1092 /* Destruct the global string table. */
1093 {
1094 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1095 * so that sv_free() won't fail on them.
80459961
NC
1096 * Now that the global string table is using a single hunk of memory
1097 * for both HE and HEK, we either need to explicitly unshare it the
1098 * correct way, or actually free things here.
6e72f9df 1099 */
80459961
NC
1100 I32 riter = 0;
1101 const I32 max = HvMAX(PL_strtab);
c4420975 1102 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1103 HE *hent = array[0];
1104
6e72f9df 1105 for (;;) {
0453d815 1106 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1107 HE * const next = HeNEXT(hent);
9014280d 1108 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1109 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1110 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1111 Safefree(hent);
1112 hent = next;
6e72f9df
PP
1113 }
1114 if (!hent) {
1115 if (++riter > max)
1116 break;
1117 hent = array[riter];
1118 }
1119 }
80459961
NC
1120
1121 Safefree(array);
1122 HvARRAY(PL_strtab) = 0;
1123 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1124 }
3280af22 1125 SvREFCNT_dec(PL_strtab);
6e72f9df 1126
e652bb2f 1127#ifdef USE_ITHREADS
c21d1a0f 1128 /* free the pointer tables used for cloning */
a0739874 1129 ptr_table_free(PL_ptr_table);
bf9cdc68 1130 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1131#endif
a0739874 1132
d33b2eba
GS
1133 /* free special SVs */
1134
1135 SvREFCNT(&PL_sv_yes) = 0;
1136 sv_clear(&PL_sv_yes);
1137 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1138 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1139
1140 SvREFCNT(&PL_sv_no) = 0;
1141 sv_clear(&PL_sv_no);
1142 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1143 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1144
9f375a43
DM
1145 {
1146 int i;
1147 for (i=0; i<=2; i++) {
1148 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1149 sv_clear(PERL_DEBUG_PAD(i));
1150 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1151 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1152 }
1153 }
1154
0453d815 1155 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1156 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1157
eba0f806
DM
1158#ifdef DEBUG_LEAKING_SCALARS
1159 if (PL_sv_count != 0) {
1160 SV* sva;
1161 SV* sv;
1162 register SV* svend;
1163
ad64d0ec 1164 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1165 svend = &sva[SvREFCNT(sva)];
1166 for (sv = sva + 1; sv < svend; ++sv) {
1167 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1168 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1169 " flags=0x%"UVxf
fd0854ff 1170 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1171 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1172 "serial %"UVuf"\n",
574b8821
NC
1173 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1174 pTHX__VALUE,
fd0854ff
DM
1175 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1176 sv->sv_debug_line,
1177 sv->sv_debug_inpad ? "for" : "by",
1178 sv->sv_debug_optype ?
1179 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1180 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1181 sv->sv_debug_serial
fd0854ff 1182 );
2aa47728 1183#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1184 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1185#endif
eba0f806
DM
1186 }
1187 }
1188 }
1189 }
2aa47728
NC
1190#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1191 {
1192 int status;
1193 fd_set rset;
1194 /* Wait for up to 4 seconds for child to terminate.
1195 This seems to be the least effort way of timing out on reaping
1196 its exit status. */
1197 struct timeval waitfor = {4, 0};
41e4abd8 1198 int sock = PL_dumper_fd;
2aa47728
NC
1199
1200 shutdown(sock, 1);
1201 FD_ZERO(&rset);
1202 FD_SET(sock, &rset);
1203 select(sock + 1, &rset, NULL, NULL, &waitfor);
1204 waitpid(child, &status, WNOHANG);
1205 close(sock);
1206 }
1207#endif
eba0f806 1208#endif
77abb4c6
NC
1209#ifdef DEBUG_LEAKING_SCALARS_ABORT
1210 if (PL_sv_count)
1211 abort();
1212#endif
bf9cdc68 1213 PL_sv_count = 0;
eba0f806 1214
f1fac472
NC
1215#ifdef PERL_DEBUG_READONLY_OPS
1216 free(PL_slabs);
1217 PL_slabs = NULL;
1218 PL_slab_count = 0;
1219#endif
eba0f806 1220
56a2bab7 1221#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1222 /* No more IO - including error messages ! */
1223 PerlIO_cleanup(aTHX);
1224#endif
1225
9f4bd222 1226 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1227 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1228 for no arg - and will try and SvREFCNT_dec it.
1229 */
1230 SvREFCNT(&PL_sv_undef) = 0;
1231 SvREADONLY_off(&PL_sv_undef);
1232
3280af22 1233 Safefree(PL_origfilename);
bd61b366 1234 PL_origfilename = NULL;
3280af22 1235 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1236 PL_reg_start_tmp = (char**)NULL;
1237 PL_reg_start_tmpl = 0;
43c5f42d 1238 Safefree(PL_reg_curpm);
82ba1be6 1239 Safefree(PL_reg_poscache);
dd28f7bb 1240 free_tied_hv_pool();
3280af22 1241 Safefree(PL_op_mask);
cf36064f 1242 Safefree(PL_psig_name);
bf9cdc68 1243 PL_psig_name = (SV**)NULL;
d525a7b2 1244 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1245 {
1246 /* We need to NULL PL_psig_pend first, so that
1247 signal handlers know not to use it */
1248 int *psig_save = PL_psig_pend;
1249 PL_psig_pend = (int*)NULL;
1250 Safefree(psig_save);
1251 }
a0714e2c 1252 PL_formfeed = NULL;
6e72f9df 1253 nuke_stacks();
bf9cdc68
RG
1254 PL_tainting = FALSE;
1255 PL_taint_warn = FALSE;
3280af22 1256 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1257 PL_debug = 0;
ac27b0f5 1258
a0d0e21e 1259 DEBUG_P(debprofdump());
d33b2eba 1260
e5dd39fc 1261#ifdef USE_REENTRANT_API
10bc17b6 1262 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1263#endif
1264
612f20c3
GS
1265 sv_free_arenas();
1266
5d9a96ca
DM
1267 while (PL_regmatch_slab) {
1268 regmatch_slab *s = PL_regmatch_slab;
1269 PL_regmatch_slab = PL_regmatch_slab->next;
1270 Safefree(s);
1271 }
1272
fc36a67e
PP
1273 /* As the absolutely last thing, free the non-arena SV for mess() */
1274
3280af22 1275 if (PL_mess_sv) {
f350b448
NC
1276 /* we know that type == SVt_PVMG */
1277
9c63abab 1278 /* it could have accumulated taint magic */
f350b448
NC
1279 MAGIC* mg;
1280 MAGIC* moremagic;
1281 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1282 moremagic = mg->mg_moremagic;
1283 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1284 && mg->mg_len >= 0)
1285 Safefree(mg->mg_ptr);
1286 Safefree(mg);
9c63abab 1287 }
f350b448 1288
fc36a67e 1289 /* we know that type >= SVt_PV */
8bd4d4c5 1290 SvPV_free(PL_mess_sv);
3280af22
NIS
1291 Safefree(SvANY(PL_mess_sv));
1292 Safefree(PL_mess_sv);
a0714e2c 1293 PL_mess_sv = NULL;
fc36a67e 1294 }
37038d91 1295 return STATUS_EXIT;
79072805
LW
1296}
1297
954c1994
GS
1298/*
1299=for apidoc perl_free
1300
1301Releases a Perl interpreter. See L<perlembed>.
1302
1303=cut
1304*/
1305
79072805 1306void
0cb96387 1307perl_free(pTHXx)
79072805 1308{
5174512c
NC
1309 dVAR;
1310
7918f24d
NC
1311 PERL_ARGS_ASSERT_PERL_FREE;
1312
c301d606
DM
1313 if (PL_veto_cleanup)
1314 return;
1315
7cb608b5 1316#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1317 {
1318 /*
1319 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1320 * value as we're probably hunting memory leaks then
1321 */
1322 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1323 if (!s || atoi(s) == 0) {
4fd0a9b8 1324 const U32 old_debug = PL_debug;
55ef9aae
MHM
1325 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1326 thread at thread exit. */
4fd0a9b8
NC
1327 if (DEBUG_m_TEST) {
1328 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1329 "free this thread's memory\n");
1330 PL_debug &= ~ DEBUG_m_FLAG;
1331 }
55ef9aae
MHM
1332 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1333 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1334 PL_debug = old_debug;
55ef9aae
MHM
1335 }
1336 }
7cb608b5
NC
1337#endif
1338
acfe0abc 1339#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1340# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1341 {
acfe0abc 1342# ifdef NETWARE
7af12a34 1343 void *host = nw_internal_host;
acfe0abc 1344# else
7af12a34 1345 void *host = w32_internal_host;
acfe0abc 1346# endif
7af12a34 1347 PerlMem_free(aTHXx);
acfe0abc 1348# ifdef NETWARE
7af12a34 1349 nw_delete_internal_host(host);
acfe0abc 1350# else
7af12a34 1351 win32_delete_internal_host(host);
acfe0abc 1352# endif
7af12a34 1353 }
1c0ca838
GS
1354# else
1355 PerlMem_free(aTHXx);
1356# endif
acfe0abc
GS
1357#else
1358 PerlMem_free(aTHXx);
76e3520e 1359#endif
79072805
LW
1360}
1361
b7f7fff6 1362#if defined(USE_ITHREADS)
aebd1ac7
GA
1363/* provide destructors to clean up the thread key when libperl is unloaded */
1364#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1365
826955bd 1366#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1367#pragma fini "perl_fini"
666ad1ec
GA
1368#elif defined(__sun) && !defined(__GNUC__)
1369#pragma fini (perl_fini)
aebd1ac7
GA
1370#endif
1371
0dbb1585
AL
1372static void
1373#if defined(__GNUC__)
1374__attribute__((destructor))
aebd1ac7 1375#endif
de009b76 1376perl_fini(void)
aebd1ac7 1377{
27da23d5 1378 dVAR;
c301d606 1379 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1380 FREE_THREAD_KEY;
1381}
1382
1383#endif /* WIN32 */
1384#endif /* THREADS */
1385
4b556e6c 1386void
864dbfa3 1387Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1388{
97aff369 1389 dVAR;
3280af22
NIS
1390 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1391 PL_exitlist[PL_exitlistlen].fn = fn;
1392 PL_exitlist[PL_exitlistlen].ptr = ptr;
1393 ++PL_exitlistlen;
4b556e6c
JD
1394}
1395
56cf6df8
RGS
1396#ifdef HAS_PROCSELFEXE
1397/* This is a function so that we don't hold on to MAXPATHLEN
1398 bytes of stack longer than necessary
1399 */
1400STATIC void
e1ec3a88 1401S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1402{
1403 char buf[MAXPATHLEN];
1404 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1405
1406 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1407 includes a spurious NUL which will cause $^X to fail in system
1408 or backticks (this will prevent extensions from being built and
1409 many tests from working). readlink is not meant to add a NUL.
1410 Normal readlink works fine.
1411 */
1412 if (len > 0 && buf[len-1] == '\0') {
1413 len--;
1414 }
1415
1416 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1417 returning the text "unknown" from the readlink rather than the path
1418 to the executable (or returning an error from the readlink). Any valid
1419 path has a '/' in it somewhere, so use that to validate the result.
1420 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1421 */
1422 if (len > 0 && memchr(buf, '/', len)) {
1423 sv_setpvn(sv,buf,len);
1424 }
1425 else {
1426 sv_setpv(sv,arg0);
1427 }
1428}
1429#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1430
1431STATIC void
1432S_set_caret_X(pTHX) {
97aff369 1433 dVAR;
fafc274c 1434 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1435 if (tmpgv) {
1436#ifdef HAS_PROCSELFEXE
1437 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1438#else
1439#ifdef OS2
c69033f2 1440 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1441#else
c69033f2 1442 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1443#endif
1444#endif
1445 }
1446}
1447
954c1994
GS
1448/*
1449=for apidoc perl_parse
1450
1451Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1452
1453=cut
1454*/
1455
79072805 1456int
0cb96387 1457perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1458{
27da23d5 1459 dVAR;
6224f72b 1460 I32 oldscope;
6224f72b 1461 int ret;
db36c5a1 1462 dJMPENV;
8d063cd8 1463
7918f24d
NC
1464 PERL_ARGS_ASSERT_PERL_PARSE;
1465#ifndef MULTIPLICITY
ed6c66dd 1466 PERL_UNUSED_ARG(my_perl);
7918f24d 1467#endif
9d4ba2ae 1468
b0891165
JH
1469#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1470 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1471 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1472 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1473 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1474 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1475 if (!PL_rehash_seed_set)
1476 PL_rehash_seed = get_hash_seed();
b0891165 1477 {
9d4ba2ae 1478 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1479
1b6737cc
AL
1480 if (s && (atoi(s) == 1))
1481 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1482 }
1483#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1484
3280af22 1485 PL_origargc = argc;
e2975953 1486 PL_origargv = argv;
a0d0e21e 1487
a2722ac9
GA
1488 if (PL_origalen != 0) {
1489 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1490 }
1491 else {
3cb9023d
JH
1492 /* Set PL_origalen be the sum of the contiguous argv[]
1493 * elements plus the size of the env in case that it is
e9137a8e 1494 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1495 * as the maximum modifiable length of $0. In the worst case
1496 * the area we are able to modify is limited to the size of
43c32782 1497 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1498 * --jhi */
e1ec3a88 1499 const char *s = NULL;
54bfe034 1500 int i;
1b6737cc 1501 const UV mask =
7d8e7db3 1502 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1503 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1504 const UV aligned =
43c32782
JH
1505 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1506
1507 /* See if all the arguments are contiguous in memory. Note
1508 * that 'contiguous' is a loose term because some platforms
1509 * align the argv[] and the envp[]. If the arguments look
1510 * like non-aligned, assume that they are 'strictly' or
1511 * 'traditionally' contiguous. If the arguments look like
1512 * aligned, we just check that they are within aligned
1513 * PTRSIZE bytes. As long as no system has something bizarre
1514 * like the argv[] interleaved with some other data, we are
1515 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1516 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1517 while (*s) s++;
1518 for (i = 1; i < PL_origargc; i++) {
1519 if ((PL_origargv[i] == s + 1
43c32782 1520#ifdef OS2
c8941eeb 1521 || PL_origargv[i] == s + 2
43c32782 1522#endif
c8941eeb
JH
1523 )
1524 ||
1525 (aligned &&
1526 (PL_origargv[i] > s &&
1527 PL_origargv[i] <=
1528 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1529 )
1530 {
1531 s = PL_origargv[i];
1532 while (*s) s++;
1533 }
1534 else
1535 break;
54bfe034 1536 }
54bfe034 1537 }
a4a109c2
JD
1538
1539#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1540 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1541 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1542 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1543 ||
1544 (aligned &&
1545 (PL_origenviron[0] > s &&
1546 PL_origenviron[0] <=
1547 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1548 )
1549 {
9d419b5f 1550#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1551 s = PL_origenviron[0];
1552 while (*s) s++;
1553#endif
bd61b366 1554 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1555 /* Force copy of environment. */
1556 for (i = 1; PL_origenviron[i]; i++) {
1557 if (PL_origenviron[i] == s + 1
1558 ||
1559 (aligned &&
1560 (PL_origenviron[i] > s &&
1561 PL_origenviron[i] <=
1562 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1563 )
1564 {
1565 s = PL_origenviron[i];
1566 while (*s) s++;
1567 }
1568 else
1569 break;
54bfe034 1570 }
43c32782 1571 }
54bfe034 1572 }
a4a109c2
JD
1573#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1574
2d2af554 1575 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1576 }
1577
3280af22 1578 if (PL_do_undump) {
a0d0e21e
LW
1579
1580 /* Come here if running an undumped a.out. */
1581
3280af22
NIS
1582 PL_origfilename = savepv(argv[0]);
1583 PL_do_undump = FALSE;
a0d0e21e 1584 cxstack_ix = -1; /* start label stack again */
748a9306 1585 init_ids();
b7975bdd
NC
1586 assert (!PL_tainted);
1587 TAINT;
1588 S_set_caret_X(aTHX);
1589 TAINT_NOT;
a0d0e21e
LW
1590 init_postdump_symbols(argc,argv,env);
1591 return 0;
1592 }
1593
3280af22 1594 if (PL_main_root) {
3280af22 1595 op_free(PL_main_root);
5f66b61c 1596 PL_main_root = NULL;
ff0cee69 1597 }
5f66b61c 1598 PL_main_start = NULL;
3280af22 1599 SvREFCNT_dec(PL_main_cv);
601f1833 1600 PL_main_cv = NULL;
79072805 1601
3280af22
NIS
1602 time(&PL_basetime);
1603 oldscope = PL_scopestack_ix;
599cee73 1604 PL_dowarn = G_WARN_OFF;
f86702cc 1605
14dd3ad8 1606 JMPENV_PUSH(ret);
6224f72b 1607 switch (ret) {
312caa8e 1608 case 0:
14dd3ad8 1609 parse_body(env,xsinit);
9ebf26ad 1610 if (PL_unitcheckav) {
3c10abe3 1611 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1612 }
1613 if (PL_checkav) {
1614 PL_phase = PERL_PHASE_CHECK;
7d30b5c4 1615 call_list(oldscope, PL_checkav);
9ebf26ad 1616 }
14dd3ad8
GS
1617 ret = 0;
1618 break;
6224f72b
GS
1619 case 1:
1620 STATUS_ALL_FAILURE;
1621 /* FALL THROUGH */
1622 case 2:
1623 /* my_exit() was called */
3280af22 1624 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1625 LEAVE;
1626 FREETMPS;
3280af22 1627 PL_curstash = PL_defstash;
9ebf26ad 1628 if (PL_unitcheckav) {
3c10abe3 1629 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1630 }
1631 if (PL_checkav) {
1632 PL_phase = PERL_PHASE_CHECK;
7d30b5c4 1633 call_list(oldscope, PL_checkav);
9ebf26ad 1634 }
37038d91 1635 ret = STATUS_EXIT;
14dd3ad8 1636 break;
6224f72b 1637 case 3:
bf49b057 1638 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1639 ret = 1;
1640 break;
6224f72b 1641 }
14dd3ad8
GS
1642 JMPENV_POP;
1643 return ret;
1644}
1645
4a5df386
NC
1646/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1647 miniperl, and we need to see those flags reflected in the values here. */
1648
1649/* What this returns is subject to change. Use the public interface in Config.
1650 */
1651static void
1652S_Internals_V(pTHX_ CV *cv)
1653{
1654 dXSARGS;
1655#ifdef LOCAL_PATCH_COUNT
1656 const int local_patch_count = LOCAL_PATCH_COUNT;
1657#else
1658 const int local_patch_count = 0;
1659#endif
2dc296d2 1660 const int entries = 3 + local_patch_count;
4a5df386
NC
1661 int i;
1662 static char non_bincompat_options[] =
1663# ifdef DEBUGGING
1664 " DEBUGGING"
1665# endif
1666# ifdef NO_MATHOMS
0d311fbe 1667 " NO_MATHOMS"
4a5df386
NC
1668# endif
1669# ifdef PERL_DISABLE_PMC
1670 " PERL_DISABLE_PMC"
1671# endif
1672# ifdef PERL_DONT_CREATE_GVSV
1673 " PERL_DONT_CREATE_GVSV"
1674# endif
9a044a43
NC
1675# ifdef PERL_EXTERNAL_GLOB
1676 " PERL_EXTERNAL_GLOB"
1677# endif
4a5df386
NC
1678# ifdef PERL_IS_MINIPERL
1679 " PERL_IS_MINIPERL"
1680# endif
1681# ifdef PERL_MALLOC_WRAP
1682 " PERL_MALLOC_WRAP"
1683# endif
1684# ifdef PERL_MEM_LOG
1685 " PERL_MEM_LOG"
1686# endif
1687# ifdef PERL_MEM_LOG_NOIMPL
1688 " PERL_MEM_LOG_NOIMPL"
1689# endif
1690# ifdef PERL_USE_DEVEL
1691 " PERL_USE_DEVEL"
1692# endif
1693# ifdef PERL_USE_SAFE_PUTENV
1694 " PERL_USE_SAFE_PUTENV"
1695# endif
de618ee4
NC
1696# ifdef USE_ATTRIBUTES_FOR_PERLIO
1697 " USE_ATTRIBUTES_FOR_PERLIO"
1698# endif
4a5df386
NC
1699# ifdef USE_FAST_STDIO
1700 " USE_FAST_STDIO"
1701# endif
5a8d8935
NC
1702# ifdef USE_PERL_ATOF
1703 " USE_PERL_ATOF"
1704# endif
0d311fbe
NC
1705# ifdef USE_SITECUSTOMIZE
1706 " USE_SITECUSTOMIZE"
1707# endif
4a5df386
NC
1708 ;
1709 PERL_UNUSED_ARG(cv);
1710 PERL_UNUSED_ARG(items);
1711
1712 EXTEND(SP, entries);
1713
1714 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1715 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1716 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1717
1718#ifdef __DATE__
1719# ifdef __TIME__
1720 PUSHs(Perl_newSVpvn_flags(aTHX_
1721 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1722 SVs_TEMP));
1723# else
1724 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1725 SVs_TEMP));
1726# endif
1727#else
1728 PUSHs(&PL_sv_undef);
1729#endif
1730
4a5df386
NC
1731 for (i = 1; i <= local_patch_count; i++) {
1732 /* This will be an undef, if PL_localpatches[i] is NULL. */
1733 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1734 }
1735
1736 XSRETURN(entries);
1737}
1738
be71fc8f
NC
1739#define INCPUSH_UNSHIFT 0x01
1740#define INCPUSH_ADD_OLD_VERS 0x02
1741#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1742#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1743#define INCPUSH_NOT_BASEDIR 0x10
1744#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1745#define INCPUSH_ADD_SUB_DIRS \
1746 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1747
312caa8e 1748STATIC void *
14dd3ad8 1749S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1750{
27da23d5 1751 dVAR;
2f9285f8 1752 PerlIO *rsfp;
312caa8e 1753 int argc = PL_origargc;
8f42b153 1754 char **argv = PL_origargv;
e1ec3a88 1755 const char *scriptname = NULL;
312caa8e 1756 VOL bool dosearch = FALSE;
c7030b81 1757 register char c;
737c24fc 1758 bool doextract = FALSE;
bd61b366 1759 const char *cddir = NULL;
ab019eaa 1760#ifdef USE_SITECUSTOMIZE
20ef40cf 1761 bool minus_f = FALSE;
ab019eaa 1762#endif
009d90df 1763 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1764 bool add_read_e_script = FALSE;
009d90df 1765
9ebf26ad
FR
1766 PL_phase = PERL_PHASE_START;
1767
009d90df 1768 SvGROW(linestr_sv, 80);
76f68e9b 1769 sv_setpvs(linestr_sv,"");
312caa8e 1770
6224f72b 1771 init_main_stash();
54310121 1772
c7030b81
NC
1773 {
1774 const char *s;
6224f72b
GS
1775 for (argc--,argv++; argc > 0; argc--,argv++) {
1776 if (argv[0][0] != '-' || !argv[0][1])
1777 break;
6224f72b
GS
1778 s = argv[0]+1;
1779 reswitch:
47f56822 1780 switch ((c = *s)) {
729a02f2 1781 case 'C':
1d5472a9
GS
1782#ifndef PERL_STRICT_CR
1783 case '\r':
1784#endif
6224f72b
GS
1785 case ' ':
1786 case '0':
1787 case 'F':
1788 case 'a':
1789 case 'c':
1790 case 'd':
1791 case 'D':
1792 case 'h':
1793 case 'i':
1794 case 'l':
1795 case 'M':
1796 case 'm':
1797 case 'n':
1798 case 'p':
1799 case 's':
1800 case 'u':
1801 case 'U':
1802 case 'v':
599cee73
PM
1803 case 'W':
1804 case 'X':
6224f72b 1805 case 'w':
97bd5664 1806 if ((s = moreswitches(s)))
6224f72b
GS
1807 goto reswitch;
1808 break;
33b78306 1809
1dbad523 1810 case 't':
22f7c9c9 1811 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1812 if( !PL_tainting ) {
1813 PL_taint_warn = TRUE;
1814 PL_tainting = TRUE;
1815 }
1816 s++;
1817 goto reswitch;
6224f72b 1818 case 'T':
22f7c9c9 1819 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1820 PL_tainting = TRUE;
317ea90d 1821 PL_taint_warn = FALSE;
6224f72b
GS
1822 s++;
1823 goto reswitch;
f86702cc 1824
bc9b29db
RH
1825 case 'E':
1826 PL_minus_E = TRUE;
1827 /* FALL THROUGH */
6224f72b 1828 case 'e':
f20b2998 1829 forbid_setid('e', FALSE);
3280af22 1830 if (!PL_e_script) {
396482e1 1831 PL_e_script = newSVpvs("");
5486870f 1832 add_read_e_script = TRUE;
6224f72b
GS
1833 }
1834 if (*++s)
3280af22 1835 sv_catpv(PL_e_script, s);
6224f72b 1836 else if (argv[1]) {
3280af22 1837 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1838 argc--,argv++;
1839 }
1840 else
47f56822 1841 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1842 sv_catpvs(PL_e_script, "\n");
6224f72b 1843 break;
afe37c7d 1844
20ef40cf 1845 case 'f':
f5542d3a 1846#ifdef USE_SITECUSTOMIZE
20ef40cf 1847 minus_f = TRUE;
f5542d3a 1848#endif
20ef40cf
GA
1849 s++;
1850 goto reswitch;
1851
6224f72b 1852 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1853 forbid_setid('I', FALSE);
bd61b366 1854 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1855 argc--,argv++;
1856 }
6224f72b 1857 if (s && *s) {
0df16ed7 1858 STRLEN len = strlen(s);
55b4bc1c 1859 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1860 }
1861 else
a67e862a 1862 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1863 break;
6224f72b 1864 case 'S':
f20b2998 1865 forbid_setid('S', FALSE);
6224f72b
GS
1866 dosearch = TRUE;
1867 s++;
1868 goto reswitch;
1869 case 'V':
7edfd0ef
NC
1870 {
1871 SV *opts_prog;
1872
7edfd0ef 1873 if (*++s != ':') {
37ca4a5b 1874 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1875 }
1876 else {
1877 ++s;
1878 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1879 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1880 0, s, 0);
1881 s += strlen(s);
1882 }
37ca4a5b 1883 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1884 /* don't look for script or read stdin */
1885 scriptname = BIT_BUCKET;
1886 goto reswitch;
6224f72b 1887 }
6224f72b 1888 case 'x':
737c24fc 1889 doextract = TRUE;
6224f72b 1890 s++;
304334da 1891 if (*s)
f4c556ac 1892 cddir = s;
6224f72b
GS
1893 break;
1894 case 0:
1895 break;
1896 case '-':
1897 if (!*++s || isSPACE(*s)) {
1898 argc--,argv++;
1899 goto switch_end;
1900 }
1901 /* catch use of gnu style long options */
1902 if (strEQ(s, "version")) {
dd374669 1903 s = (char *)"v";
6224f72b
GS
1904 goto reswitch;
1905 }
1906 if (strEQ(s, "help")) {
dd374669 1907 s = (char *)"h";
6224f72b
GS
1908 goto reswitch;
1909 }
1910 s--;
1911 /* FALL THROUGH */
1912 default:
cea2e8a9 1913 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1914 }
1915 }
c7030b81
NC
1916 }
1917
6224f72b 1918 switch_end:
54310121 1919
c7030b81
NC
1920 {
1921 char *s;
1922
f675dbe5
CB
1923 if (
1924#ifndef SECURE_INTERNAL_GETENV
1925 !PL_tainting &&
1926#endif
cf756827 1927 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1928 {
74288ac8
GS
1929 while (isSPACE(*s))
1930 s++;
317ea90d 1931 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1932 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1933 PL_tainting = TRUE;
317ea90d
MS
1934 PL_taint_warn = FALSE;
1935 }
74288ac8 1936 else {
bd61b366 1937 char *popt_copy = NULL;
74288ac8 1938 while (s && *s) {
54913509 1939 const char *d;
74288ac8
GS
1940 while (isSPACE(*s))
1941 s++;
1942 if (*s == '-') {
1943 s++;
1944 if (isSPACE(*s))
1945 continue;
1946 }
4ea8f8fb 1947 d = s;
74288ac8
GS
1948 if (!*s)
1949 break;
2b622f1a 1950 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1951 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1952 while (++s && *s) {
1953 if (isSPACE(*s)) {
cf756827 1954 if (!popt_copy) {
bfa6c418
NC
1955 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1956 s = popt_copy + (s - d);
1957 d = popt_copy;
cf756827 1958 }
4ea8f8fb
MS
1959 *s++ = '\0';
1960 break;
1961 }
1962 }
1c4db469 1963 if (*d == 't') {
317ea90d
MS
1964 if( !PL_tainting ) {
1965 PL_taint_warn = TRUE;
1966 PL_tainting = TRUE;
1967 }
1c4db469 1968 } else {
97bd5664 1969 moreswitches(d);
1c4db469 1970 }
6224f72b 1971 }
6224f72b
GS
1972 }
1973 }
c7030b81 1974 }
a0d0e21e 1975
87e06404 1976#if defined(USE_SITECUSTOMIZE) && !defined(PERL_IS_MINIPERL)
20ef40cf 1977 if (!minus_f) {
404ad9dc
NC
1978 /* SITELIB_EXP is a function call on Win32.
1979 The games with local $! are to avoid setting errno if there is no
1980 sitecustomize script. */
1981 const char *const sitelib = SITELIB_EXP;
29a861e7 1982 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1983 Perl_newSVpvf(aTHX_
1984 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
20ef40cf
GA
1985 }
1986#endif
1987
6224f72b
GS
1988 if (!scriptname)
1989 scriptname = argv[0];
3280af22 1990 if (PL_e_script) {
6224f72b
GS
1991 argc++,argv--;
1992 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1993 }
bd61b366 1994 else if (scriptname == NULL) {
6224f72b
GS
1995#ifdef MSDOS
1996 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1997 moreswitches("h");
6224f72b
GS
1998#endif
1999 scriptname = "-";
2000 }
2001
b7975bdd
NC
2002 /* Set $^X early so that it can be used for relocatable paths in @INC */
2003 assert (!PL_tainted);
2004 TAINT;
2005 S_set_caret_X(aTHX);
2006 TAINT_NOT;
2cace6ac 2007 init_perllib();
6224f72b 2008
a52eba0e 2009 {
f20b2998 2010 bool suidscript = FALSE;
829372d3 2011
cc69b689 2012 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2013
2f9285f8 2014 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2015 linestr_sv, rsfp);
6224f72b 2016
64ca3a65 2017#ifndef PERL_MICRO
a52eba0e
NC
2018# if defined(SIGCHLD) || defined(SIGCLD)
2019 {
2020# ifndef SIGCHLD
2021# define SIGCHLD SIGCLD
2022# endif
2023 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2024 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2025 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2026 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2027 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2028 }
0b5b802d 2029 }
a52eba0e 2030# endif
64ca3a65 2031#endif
0b5b802d 2032
737c24fc 2033 if (doextract) {
faef540c 2034
f20b2998 2035 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2036 setuid scripts. */
2037 forbid_setid('x', suidscript);
f20b2998 2038 /* Hence you can't get here if suidscript is true */
faef540c 2039
2f9285f8 2040 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2041 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2042 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2043 }
f4c556ac 2044 }
6224f72b 2045
ea726b52 2046 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2047 CvUNIQUE_on(PL_compcv);
2048
dd2155a4 2049 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2050
dd69841b
BB
2051 PL_isarev = newHV();
2052
0c4f7ff0 2053 boot_core_PerlIO();
6224f72b 2054 boot_core_UNIVERSAL();
e1a479c5 2055 boot_core_mro();
4a5df386 2056 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2057
2058 if (xsinit)
acfe0abc 2059 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2060#ifndef PERL_MICRO
d0d72822 2061#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2062 init_os_extras();
6224f72b 2063#endif
64ca3a65 2064#endif
6224f72b 2065
29209bc5 2066#ifdef USE_SOCKS
1b9c9cf5
DH
2067# ifdef HAS_SOCKS5_INIT
2068 socks5_init(argv[0]);
2069# else
29209bc5 2070 SOCKSinit(argv[0]);
1b9c9cf5 2071# endif
ac27b0f5 2072#endif
29209bc5 2073
6224f72b
GS
2074 init_predump_symbols();
2075 /* init_postdump_symbols not currently designed to be called */
2076 /* more than once (ENV isn't cleared first, for example) */
2077 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2078 if (!PL_do_undump)
6224f72b
GS
2079 init_postdump_symbols(argc,argv,env);
2080
27da23d5
JH
2081 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2082 * or explicitly in some platforms.
085a54d9 2083 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2084 * look like the user wants to use UTF-8. */
a0fd4948 2085#if defined(__SYMBIAN32__)
27da23d5
JH
2086 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2087#endif
e27b5b51 2088# ifndef PERL_IS_MINIPERL
06e66572
JH
2089 if (PL_unicode) {
2090 /* Requires init_predump_symbols(). */
a05d7ebb 2091 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2092 IO* io;
2093 PerlIO* fp;
2094 SV* sv;
2095
a05d7ebb 2096 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2097 * and the default open disciplines. */
a05d7ebb
JH
2098 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2099 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2100 (fp = IoIFP(io)))
2101 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2102 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2103 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2104 (fp = IoOFP(io)))
2105 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2106 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2107 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2108 (fp = IoOFP(io)))
2109 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2110 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2111 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2112 SVt_PV)))) {
a05d7ebb
JH
2113 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2114 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2115 if (in) {
2116 if (out)
76f68e9b 2117 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2118 else
76f68e9b 2119 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2120 }
2121 else if (out)
76f68e9b 2122 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2123 SvSETMAGIC(sv);
2124 }
b310b053
JH
2125 }
2126 }
e27b5b51 2127#endif
b310b053 2128
c7030b81
NC
2129 {
2130 const char *s;
4ffa73a3
JH
2131 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2132 if (strEQ(s, "unsafe"))
2133 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2134 else if (strEQ(s, "safe"))
2135 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2136 else
2137 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2138 }
c7030b81 2139 }
4ffa73a3 2140
81d86705 2141#ifdef PERL_MAD
c7030b81
NC
2142 {
2143 const char *s;
81d86705
NC
2144 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2145 PL_madskills = 1;
2146 PL_minus_c = 1;
2147 if (!s || !s[0])
2148 PL_xmlfp = PerlIO_stdout();
2149 else {
2150 PL_xmlfp = PerlIO_open(s, "w");
2151 if (!PL_xmlfp)
2152 Perl_croak(aTHX_ "Can't open %s", s);
2153 }
1a9a51d4 2154 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2155 }
c7030b81
NC
2156 }
2157
2158 {
2159 const char *s;
81d86705
NC
2160 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2161 PL_madskills = atoi(s);
1a9a51d4 2162 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2163 }
c7030b81 2164 }
81d86705
NC
2165#endif
2166
8eaa0acf 2167 lex_start(linestr_sv, rsfp, 0);
219f7226 2168 PL_subname = newSVpvs("main");
6224f72b 2169
5486870f
DM
2170 if (add_read_e_script)
2171 filter_add(read_e_script, NULL);
2172
6224f72b
GS
2173 /* now parse the script */
2174
93189314 2175 SETERRNO(0,SS_NORMAL);
28ac2b49 2176 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2177 if (PL_minus_c)
cea2e8a9 2178 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2179 else {
cea2e8a9 2180 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2181 PL_origfilename);
6224f72b
GS
2182 }
2183 }
57843af0 2184 CopLINE_set(PL_curcop, 0);
3280af22 2185 PL_curstash = PL_defstash;
3280af22
NIS
2186 if (PL_e_script) {
2187 SvREFCNT_dec(PL_e_script);
a0714e2c 2188 PL_e_script = NULL;
6224f72b
GS
2189 }
2190
3280af22 2191 if (PL_do_undump)
6224f72b
GS
2192 my_unexec();
2193
57843af0
GS
2194 if (isWARN_ONCE) {
2195 SAVECOPFILE(PL_curcop);
2196 SAVECOPLINE(PL_curcop);
3280af22 2197 gv_check(PL_defstash);
57843af0 2198 }
6224f72b
GS
2199
2200 LEAVE;
2201 FREETMPS;
2202
2203#ifdef MYMALLOC
f6a607bc
RGS
2204 {
2205 const char *s;
6224f72b
GS
2206 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2207 dump_mstats("after compilation:");
f6a607bc 2208 }
6224f72b
GS
2209#endif
2210
2211 ENTER;
febb3a6d 2212 PL_restartjmpenv = NULL;
3280af22 2213 PL_restartop = 0;
312caa8e 2214 return NULL;
6224f72b
GS
2215}
2216
954c1994
GS
2217/*
2218=for apidoc perl_run
2219
2220Tells a Perl interpreter to run. See L<perlembed>.
2221
2222=cut
2223*/
2224
6224f72b 2225int
0cb96387 2226perl_run(pTHXx)
6224f72b 2227{
97aff369 2228 dVAR;
6224f72b 2229 I32 oldscope;
14dd3ad8 2230 int ret = 0;
db36c5a1 2231 dJMPENV;
6224f72b 2232
7918f24d
NC
2233 PERL_ARGS_ASSERT_PERL_RUN;
2234#ifndef MULTIPLICITY
ed6c66dd 2235 PERL_UNUSED_ARG(my_perl);
7918f24d 2236#endif
9d4ba2ae 2237
3280af22 2238 oldscope = PL_scopestack_ix;
96e176bf
CL
2239#ifdef VMS
2240 VMSISH_HUSHED = 0;
2241#endif
6224f72b 2242
14dd3ad8 2243 JMPENV_PUSH(ret);
6224f72b
GS
2244 switch (ret) {
2245 case 1:
2246 cxstack_ix = -1; /* start context stack again */
312caa8e 2247 goto redo_body;
14dd3ad8 2248 case 0: /* normal completion */
14dd3ad8
GS
2249 redo_body:
2250 run_body(oldscope);
14dd3ad8
GS
2251 /* FALL THROUGH */
2252 case 2: /* my_exit() */
3280af22 2253 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2254 LEAVE;
2255 FREETMPS;
3280af22 2256 PL_curstash = PL_defstash;
3a1ee7e8 2257 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad
FR
2258 PL_endav && !PL_minus_c) {
2259 PL_phase = PERL_PHASE_END;
31d77e54 2260 call_list(oldscope, PL_endav);
9ebf26ad 2261 }
6224f72b
GS
2262#ifdef MYMALLOC
2263 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2264 dump_mstats("after execution: ");
2265#endif
37038d91 2266 ret = STATUS_EXIT;
14dd3ad8 2267 break;
6224f72b 2268 case 3:
312caa8e
CS
2269 if (PL_restartop) {
2270 POPSTACK_TO(PL_mainstack);
2271 goto redo_body;
6224f72b 2272 }
bf49b057 2273 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2274 FREETMPS;
14dd3ad8
GS
2275 ret = 1;
2276 break;
6224f72b
GS
2277 }
2278
14dd3ad8
GS
2279 JMPENV_POP;
2280 return ret;
312caa8e
CS
2281}
2282
dd374669 2283STATIC void
14dd3ad8
GS
2284S_run_body(pTHX_ I32 oldscope)
2285{
97aff369 2286 dVAR;
6224f72b 2287 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2288 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2289
3280af22 2290 if (!PL_restartop) {
81d86705
NC
2291#ifdef PERL_MAD
2292 if (PL_xmlfp) {
2293 xmldump_all();
2294 exit(0); /* less likely to core dump than my_exit(0) */
2295 }
2296#endif
cf2782cd 2297#ifdef DEBUGGING
f0e3f042
CS
2298 if (DEBUG_x_TEST || DEBUG_B_TEST)
2299 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2300 if (!DEBUG_q_TEST)
2301 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2302#endif
6224f72b 2303
3280af22 2304 if (PL_minus_c) {
bf49b057 2305 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2306 my_exit(0);
2307 }
3280af22 2308 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2309 sv_setiv(PL_DBsingle, 1);
9ebf26ad
FR
2310 if (PL_initav) {
2311 PL_phase = PERL_PHASE_INIT;
3280af22 2312 call_list(oldscope, PL_initav);
9ebf26ad 2313 }
f1fac472
NC
2314#ifdef PERL_DEBUG_READONLY_OPS
2315 Perl_pending_Slabs_to_ro(aTHX);
2316#endif
6224f72b
GS
2317 }
2318
2319 /* do it */
2320
9ebf26ad
FR
2321 PL_phase = PERL_PHASE_RUN;
2322
3280af22 2323 if (PL_restartop) {
febb3a6d 2324 PL_restartjmpenv = NULL;
533c011a 2325 PL_op = PL_restartop;
3280af22 2326 PL_restartop = 0;
cea2e8a9 2327 CALLRUNOPS(aTHX);
6224f72b 2328 }
3280af22
NIS
2329 else if (PL_main_start) {
2330 CvDEPTH(PL_main_cv) = 1;
533c011a 2331 PL_op = PL_main_start;
cea2e8a9 2332 CALLRUNOPS(aTHX);
6224f72b 2333 }
f6b3007c
JH
2334 my_exit(0);
2335 /* NOTREACHED */
6224f72b
GS
2336}
2337
954c1994 2338/*
ccfc67b7
JH
2339=head1 SV Manipulation Functions
2340
954c1994
GS
2341=for apidoc p||get_sv
2342
64ace3f8
NC
2343Returns the SV of the specified Perl scalar. C<flags> are passed to
2344C<gv_fetchpv>. If C<GV_ADD> is set and the
2345Perl variable does not exist then it will be created. If C<flags> is zero
2346and the variable does not exist then NULL is returned.
954c1994
GS
2347
2348=cut
2349*/
2350
6224f72b 2351SV*
64ace3f8 2352Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2353{
2354 GV *gv;
7918f24d
NC
2355
2356 PERL_ARGS_ASSERT_GET_SV;
2357
64ace3f8 2358 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2359 if (gv)
2360 return GvSV(gv);
a0714e2c 2361 return NULL;
6224f72b
GS
2362}
2363
954c1994 2364/*
ccfc67b7
JH
2365=head1 Array Manipulation Functions
2366
954c1994
GS
2367=for apidoc p||get_av
2368
cbfd0a87
NC
2369Returns the AV of the specified Perl array. C<flags> are passed to
2370C<gv_fetchpv>. If C<GV_ADD> is set and the
2371Perl variable does not exist then it will be created. If C<flags> is zero
2372and the variable does not exist then NULL is returned.
954c1994
GS
2373
2374=cut
2375*/
2376
6224f72b 2377AV*
cbfd0a87 2378Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2379{
cbfd0a87 2380 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2381
2382 PERL_ARGS_ASSERT_GET_AV;
2383
cbfd0a87 2384 if (flags)
6224f72b
GS
2385 return GvAVn(gv);
2386 if (gv)
2387 return GvAV(gv);
7d49f689 2388 return NULL;
6224f72b
GS
2389}
2390
954c1994 2391/*
ccfc67b7
JH
2392=head1 Hash Manipulation Functions
2393
954c1994
GS
2394=for apidoc p||get_hv
2395
6673a63c
NC
2396Returns the HV of the specified Perl hash. C<flags> are passed to
2397C<gv_fetchpv>. If C<GV_ADD> is set and the
2398Perl variable does not exist then it will be created. If C<flags> is zero
2399and the variable does not exist then NULL is returned.
954c1994
GS
2400
2401=cut
2402*/
2403
6224f72b 2404HV*
6673a63c 2405Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2406{
6673a63c 2407 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2408
2409 PERL_ARGS_ASSERT_GET_HV;
2410
6673a63c 2411 if (flags)
a0d0e21e
LW
2412 return GvHVn(gv);
2413 if (gv)
2414 return GvHV(gv);
5c284bb0 2415 return NULL;
a0d0e21e
LW
2416}
2417
954c1994 2418/*
ccfc67b7
JH
2419=head1 CV Manipulation Functions
2420
780a5241
NC
2421=for apidoc p||get_cvn_flags
2422
2423Returns the CV of the specified Perl subroutine. C<flags> are passed to
2424C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2425exist then it will be declared (which has the same effect as saying
2426C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2427then NULL is returned.
2428
954c1994
GS
2429=for apidoc p||get_cv
2430
780a5241 2431Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2432
2433=cut
2434*/
2435
a0d0e21e 2436CV*
780a5241 2437Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2438{
780a5241 2439 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2440 /* XXX this is probably not what they think they're getting.
2441 * It has the same effect as "sub name;", i.e. just a forward
2442 * declaration! */
7918f24d
NC
2443
2444 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2445
780a5241 2446 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2447 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2448 return newSUB(start_subparse(FALSE, 0),
780a5241 2449 newSVOP(OP_CONST, 0, sv),
5f66b61c 2450 NULL, NULL);
780a5241 2451 }
a0d0e21e 2452 if (gv)
8ebc5c01 2453 return GvCVu(gv);
601f1833 2454 return NULL;
a0d0e21e
LW
2455}
2456
2c67934f
NC
2457/* Nothing in core calls this now, but we can't replace it with a macro and
2458 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2459CV*
2460Perl_get_cv(pTHX_ const char *name, I32 flags)
2461{
7918f24d
NC
2462 PERL_ARGS_ASSERT_GET_CV;
2463
780a5241
NC
2464 return get_cvn_flags(name, strlen(name), flags);
2465}
2466
79072805
LW
2467/* Be sure to refetch the stack pointer after calling these routines. */
2468
954c1994 2469/*
ccfc67b7
JH
2470
2471=head1 Callback Functions
2472
954c1994
GS
2473=for apidoc p||call_argv
2474
2475Performs a callback to the specified Perl sub. See L<perlcall>.
2476
2477=cut
2478*/
2479
a0d0e21e 2480I32
8f42b153 2481Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2482
8ac85365
NIS
2483 /* See G_* flags in cop.h */
2484 /* null terminated arg list */
8990e307 2485{
97aff369 2486 dVAR;
a0d0e21e 2487 dSP;
8990e307 2488
7918f24d
NC
2489 PERL_ARGS_ASSERT_CALL_ARGV;
2490
924508f0 2491 PUSHMARK(SP);
a0d0e21e 2492 if (argv) {
8990e307 2493 while (*argv) {
6e449a3a 2494 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2495 argv++;
2496 }
a0d0e21e 2497 PUTBACK;
8990e307 2498 }
864dbfa3 2499 return call_pv(sub_name, flags);
8990e307
LW
2500}
2501
954c1994
GS
2502/*
2503=for apidoc p||call_pv
2504
2505Performs a callback to the specified Perl sub. See L<perlcall>.
2506
2507=cut
2508*/
2509
a0d0e21e 2510I32
864dbfa3 2511Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2512 /* name of the subroutine */
2513 /* See G_* flags in cop.h */
a0d0e21e 2514{
7918f24d
NC
2515 PERL_ARGS_ASSERT_CALL_PV;
2516
0da0e728 2517 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2518}
2519
954c1994
GS
2520/*
2521=for apidoc p||call_method
2522
2523Performs a callback to the specified Perl method. The blessed object must
2524be on the stack. See L<perlcall>.
2525
2526=cut
2527*/
2528
a0d0e21e 2529I32
864dbfa3 2530Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2531 /* name of the subroutine */
2532 /* See G_* flags in cop.h */
a0d0e21e 2533{
46ca9bac 2534 STRLEN len;
7918f24d
NC
2535 PERL_ARGS_ASSERT_CALL_METHOD;
2536
46ca9bac 2537 len = strlen(methname);
2538
2539 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2540 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2541}
2542
2543/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2544/*
2545=for apidoc p||call_sv
2546
2547Performs a callback to the Perl sub whose name is in the SV. See
2548L<perlcall>.
2549
2550=cut
2551*/
2552
a0d0e21e 2553I32
001d637e 2554Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2555 /* See G_* flags in cop.h */
a0d0e21e 2556{
27da23d5 2557 dVAR; dSP;
a0d0e21e 2558 LOGOP myop; /* fake syntax tree node */
968b3946 2559 UNOP method_op;
aa689395 2560 I32 oldmark;
8ea43dc8 2561 VOL I32 retval = 0;
a0d0e21e 2562 I32 oldscope;
54310121 2563 bool oldcatch = CATCH_GET;
6224f72b 2564 int ret;
c4420975 2565 OP* const oldop = PL_op;
db36c5a1 2566 dJMPENV;
1e422769 2567
7918f24d
NC
2568 PERL_ARGS_ASSERT_CALL_SV;
2569
a0d0e21e
LW
2570 if (flags & G_DISCARD) {
2571 ENTER;
2572 SAVETMPS;
2573 }
2f8edad0
NC
2574 if (!(flags & G_WANT)) {
2575 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2576 */
2577 flags |= G_SCALAR;
2578 }
a0d0e21e 2579
aa689395 2580 Zero(&myop, 1, LOGOP);
5f66b61c 2581 myop.op_next = NULL;
f51d4af5 2582 if (!(flags & G_NOARGS))
aa689395 2583 myop.op_flags |= OPf_STACKED;
4f911530 2584 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2585 SAVEOP();
533c011a 2586 PL_op = (OP*)&myop;
aa689395 2587
3280af22
NIS
2588 EXTEND(PL_stack_sp, 1);
2589 *++PL_stack_sp = sv;
aa689395 2590 oldmark = TOPMARK;
3280af22 2591 oldscope = PL_scopestack_ix;
a0d0e21e 2592
3280af22 2593 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2594 /* Handle first BEGIN of -d. */
3280af22 2595 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2596 /* Try harder, since this may have been a sighandler, thus
2597 * curstash may be meaningless. */
ea726b52 2598 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2599 && !(flags & G_NODEBUG))
533c011a 2600 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2601
968b3946
GS
2602 if (flags & G_METHOD) {
2603 Zero(&method_op, 1, UNOP);
2604 method_op.op_next = PL_op;
2605 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2606 method_op.op_type = OP_METHOD;
968b3946 2607 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2608 myop.op_type = OP_ENTERSUB;
f39d0b86 2609 PL_op = (OP*)&method_op;
968b3946
GS
2610 }
2611
312caa8e 2612 if (!(flags & G_EVAL)) {
0cdb2077 2613 CATCH_SET(TRUE);
d6f07c05 2614 CALL_BODY_SUB((OP*)&myop);
312caa8e 2615 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2616 CATCH_SET(oldcatch);
312caa8e
CS
2617 }
2618 else {
d78bda3d 2619 myop.op_other = (OP*)&myop;
3280af22 2620 PL_markstack_ptr--;
edb2152a 2621 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2622 PL_markstack_ptr++;
a0d0e21e 2623
14dd3ad8 2624 JMPENV_PUSH(ret);
edb2152a 2625
6224f72b
GS
2626 switch (ret) {
2627 case 0:
14dd3ad8 2628 redo_body:
d6f07c05 2629 CALL_BODY_SUB((OP*)&myop);
312caa8e 2630 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2631 if (!(flags & G_KEEPERR)) {
ab69dbc2 2632 CLEAR_ERRSV();
8433848b 2633 }
a0d0e21e 2634 break;
6224f72b 2635 case 1:
f86702cc 2636 STATUS_ALL_FAILURE;
a0d0e21e 2637 /* FALL THROUGH */
6224f72b 2638 case 2:
a0d0e21e 2639 /* my_exit() was called */
3280af22 2640 PL_curstash = PL_defstash;
a0d0e21e 2641 FREETMPS;
14dd3ad8 2642 JMPENV_POP;
f86702cc 2643 my_exit_jump();
a0d0e21e 2644 /* NOTREACHED */
6224f72b 2645 case 3:
3280af22 2646 if (PL_restartop) {
febb3a6d 2647 PL_restartjmpenv = NULL;
533c011a 2648 PL_op = PL_restartop;
3280af22 2649 PL_restartop = 0;
312caa8e 2650 goto redo_body;
a0d0e21e 2651 }
3280af22 2652 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2653 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2654 retval = 0;
2655 else {
2656 retval = 1;
3280af22 2657 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2658 }
312caa8e 2659 break;
a0d0e21e 2660 }
a0d0e21e 2661
edb2152a
NC
2662 if (PL_scopestack_ix > oldscope)
2663 delete_eval_scope();
14dd3ad8 2664 JMPENV_POP;
a0d0e21e 2665 }
1e422769 2666
a0d0e21e 2667 if (flags & G_DISCARD) {
3280af22 2668 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2669 retval = 0;
2670 FREETMPS;
2671 LEAVE;
2672 }
533c011a 2673 PL_op = oldop;
a0d0e21e
LW
2674 return retval;
2675}
2676
6e72f9df 2677/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2678
954c1994
GS
2679/*
2680=for apidoc p||eval_sv
2681
be064c4a
DM
2682Tells Perl to C<eval> the string in the SV. It supports the same flags
2683as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2684
2685=cut
2686*/
2687
a0d0e21e 2688I32
864dbfa3 2689Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2690
8ac85365 2691 /* See G_* flags in cop.h */
a0d0e21e 2692{
97aff369 2693 dVAR;
924508f0 2694 dSP;
a0d0e21e 2695 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2696 VOL I32 oldmark = SP - PL_stack_base;
2697 VOL I32 retval = 0;
6224f72b 2698 int ret;
c4420975 2699 OP* const oldop = PL_op;
db36c5a1 2700 dJMPENV;
84902520 2701
7918f24d
NC
2702 PERL_ARGS_ASSERT_EVAL_SV;
2703
4633a7c4
LW
2704 if (flags & G_DISCARD) {
2705 ENTER;
2706 SAVETMPS;
2707 }
2708
462e5cf6 2709 SAVEOP();
533c011a
NIS
2710 PL_op = (OP*)&myop;
2711 Zero(PL_op, 1, UNOP);
3280af22
NIS
2712 EXTEND(PL_stack_sp, 1);
2713 *++PL_stack_sp = sv;
79072805 2714
4633a7c4
LW
2715 if (!(flags & G_NOARGS))
2716 myop.op_flags = OPf_STACKED;
5f66b61c 2717 myop.op_next = NULL;
6e72f9df 2718 myop.op_type = OP_ENTEREVAL;
4f911530 2719 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2720 if (flags & G_KEEPERR)
2721 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2722
dedbcade
DM
2723 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2724 * before a PUSHEVAL, which corrupts the stack after a croak */
2725 TAINT_PROPER("eval_sv()");
2726
14dd3ad8 2727 JMPENV_PUSH(ret);
6224f72b
GS
2728 switch (ret) {
2729 case 0:
14dd3ad8 2730 redo_body:
2ba65d5f
DM
2731 if (PL_op == (OP*)(&myop)) {
2732 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2733 if (!PL_op)
2734 goto fail; /* failed in compilation */
2735 }
4aca2f62 2736 CALLRUNOPS(aTHX);
312caa8e 2737 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2738 if (!(flags & G_KEEPERR)) {
ab69dbc2 2739 CLEAR_ERRSV();
8433848b 2740 }
4633a7c4 2741 break;
6224f72b 2742 case 1:
f86702cc 2743 STATUS_ALL_FAILURE;
4633a7c4 2744 /* FALL THROUGH */
6224f72b 2745 case 2:
4633a7c4 2746 /* my_exit() was called */
3280af22 2747 PL_curstash = PL_defstash;
4633a7c4 2748 FREETMPS;
14dd3ad8 2749 JMPENV_POP;
f86702cc 2750 my_exit_jump();
4633a7c4 2751 /* NOTREACHED */
6224f72b 2752 case 3:
3280af22 2753 if (PL_restartop) {
febb3a6d 2754 PL_restartjmpenv = NULL;
533c011a 2755 PL_op = PL_restartop;
3280af22 2756 PL_restartop = 0;
312caa8e 2757 goto redo_body;
4633a7c4 2758 }
4aca2f62 2759 fail:
3280af22 2760 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2761 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2762 retval = 0;
2763 else {
2764 retval = 1;
3280af22 2765 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2766 }
312caa8e 2767 break;
4633a7c4
LW
2768 }
2769
14dd3ad8 2770 JMPENV_POP;
4633a7c4 2771 if (flags & G_DISCARD) {
3280af22 2772 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2773 retval = 0;
2774 FREETMPS;
2775 LEAVE;
2776 }
533c011a 2777 PL_op = oldop;
4633a7c4
LW
2778 return retval;
2779}
2780
954c1994
GS
2781/*
2782=for apidoc p||eval_pv
2783
2784Tells Perl to C<eval> the given string and return an SV* result.
2785
2786=cut
2787*/
2788
137443ea 2789SV*
864dbfa3 2790Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2791{
97aff369 2792 dVAR;
137443ea
PP
2793 dSP;
2794 SV* sv = newSVpv(p, 0);
2795
7918f24d
NC
2796 PERL_ARGS_ASSERT_EVAL_PV;
2797
864dbfa3 2798 eval_sv(sv, G_SCALAR);
137443ea
PP
2799 SvREFCNT_dec(sv);
2800
2801 SPAGAIN;
2802 sv = POPs;
2803 PUTBACK;
2804
2d8e6c8d 2805 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2806 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2807 }
137443ea
PP
2808
2809 return sv;
2810}
2811
4633a7c4
LW
2812/* Require a module. */
2813
954c1994 2814/*
ccfc67b7
JH
2815=head1 Embedding Functions
2816
954c1994
GS
2817=for apidoc p||require_pv
2818
7d3fb230
BS
2819Tells Perl to C<require> the file named by the string argument. It is
2820analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2821implemented that way; consider using load_module instead.
954c1994 2822
7d3fb230 2823=cut */
954c1994 2824
4633a7c4 2825void
864dbfa3 2826Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2827{
97aff369 2828 dVAR;
d3acc0f7 2829 dSP;
97aff369 2830 SV* sv;
7918f24d
NC
2831
2832 PERL_ARGS_ASSERT_REQUIRE_PV;
2833
e788e7d3 2834 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2835 PUTBACK;
be41e5d9
NC
2836 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2837 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2838 SPAGAIN;
2839 POPSTACK;
79072805
LW
2840}
2841
76e3520e 2842STATIC void
e1ec3a88 2843S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2844{
ab821d7f 2845 /* This message really ought to be max 23 lines.
75c72d73 2846 * Removed -h because the user already knows that option. Others? */
fb73857a 2847
1566c39d
NC
2848 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2849 minimum of 509 character string literals. */
27da23d5 2850 static const char * const usage_msg[] = {
1566c39d
NC
2851" -0[octal] specify record separator (\\0, if no argument)\n"
2852" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2853" -C[number/list] enables the listed Unicode features\n"
2854" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2855" -d[:debugger] run program under debugger\n"
2856" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2857" -e program one line of program (several -e's allowed, omit programfile)\n"
2858" -E program like -e, but enables all optional features\n"
2859" -f don't do $sitelib/sitecustomize.pl at startup\n"
2860" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2861" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2862" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2863" -l[octal] enable line ending processing, specifies line terminator\n"
2864" -[mM][-]module execute \"use/no module...\" before executing program\n"
2865" -n assume \"while (<>) { ... }\" loop around program\n"
2866" -p assume loop like -n but print line also, like sed\n"
2867" -s enable rudimentary parsing for switches after programfile\n"
2868" -S look for programfile using PATH environment variable\n",
2869" -t enable tainting warnings\n"
2870" -T enable tainting checks\n"
2871" -u dump core after parsing program\n"
2872" -U allow unsafe operations\n"
2873" -v print version, patchlevel and license\n"
2874" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2875" -w enable many useful warnings\n"
1566c39d
NC
2876" -W enable all warnings\n"
2877" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2878" -X disable all warnings\n"
2879" \n"
2880"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2881NULL
2882};
27da23d5 2883 const char * const *p = usage_msg;
1566c39d 2884 PerlIO *out = PerlIO_stdout();
fb73857a 2885
7918f24d
NC
2886 PERL_ARGS_ASSERT_USAGE;
2887
1566c39d
NC
2888 PerlIO_printf(out,
2889 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2890 name);
fb73857a 2891 while (*p)
1566c39d 2892 PerlIO_puts(out, *p++);
4633a7c4
LW
2893}
2894
b4ab917c
DM
2895/* convert a string of -D options (or digits) into an int.
2896 * sets *s to point to the char after the options */
2897
2898#ifdef DEBUGGING
2899int
e1ec3a88 2900Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2901{
27da23d5 2902 static const char * const usage_msgd[] = {
651b8f1a
NC
2903 " Debugging flag values: (see also -d)\n"
2904 " p Tokenizing and parsing (with v, displays parse stack)\n"
2905 " s Stack snapshots (with v, displays all stacks)\n"
2906 " l Context (loop) stack processing\n"
2907 " t Trace execution\n"
2908 " o Method and overloading resolution\n",
2909 " c String/numeric conversions\n"
2910 " P Print profiling info, source file input state\n"
2911 " m Memory and SV allocation\n"
2912 " f Format processing\n"
2913 " r Regular expression parsing and execution\n"
2914 " x Syntax tree dump\n",
2915 " u Tainting checks\n"
2916 " H Hash dump -- usurps values()\n"
2917 " X Scratchpad allocation\n"
2918 " D Cleaning up\n"
2919 " T Tokenising\n"
2920 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2921 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2922 " v Verbose: use in conjunction with other flags\n"
2923 " C Copy On Write\n"
2924 " A Consistency checks on internal structures\n"
2925 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2926 " M trace smart match resolution\n"
2927 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2928 NULL
2929 };
b4ab917c 2930 int i = 0;
7918f24d
NC
2931
2932 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2933
b4ab917c
DM
2934 if (isALPHA(**s)) {
2935 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2936 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2937
2938 for (; isALNUM(**s); (*s)++) {
c4420975 2939 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2940 if (d)
2941 i |= 1 << (d - debopts);
2942 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2943 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2944 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2945 }
2946 }
e6e64d9b 2947 else if (isDIGIT(**s)) {
b4ab917c
DM
2948 i = atoi(*s);
2949 for (; isALNUM(**s); (*s)++) ;
2950 }
ddcf8bc1 2951 else if (givehelp) {
06e869a4 2952 const char *const *p = usage_msgd;
651b8f1a 2953 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 2954 }
b4ab917c
DM
2955# ifdef EBCDIC
2956 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2957 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2958 "-Dp not implemented on this platform\n");
2959# endif
2960 return i;
2961}
2962#endif
2963
79072805
LW
2964/* This routine handles any switches that can be given during run */
2965
c7030b81
NC
2966const char *
2967Perl_moreswitches(pTHX_ const char *s)
79072805 2968{
27da23d5 2969 dVAR;
84c133a0 2970 UV rschar;
0544e6df 2971 const char option = *s; /* used to remember option in -m/-M code */
79072805 2972
7918f24d
NC
2973 PERL_ARGS_ASSERT_MORESWITCHES;
2974
79072805
LW
2975 switch (*s) {
2976 case '0':
a863c7d1 2977 {
f2095865 2978 I32 flags = 0;
a3b680e6 2979 STRLEN numlen;
f2095865
JH
2980
2981 SvREFCNT_dec(PL_rs);
2982 if (s[1] == 'x' && s[2]) {
a3b680e6 2983 const char *e = s+=2;
f2095865
JH
2984 U8 *tmps;
2985
a3b680e6
AL
2986 while (*e)
2987 e++;
f2095865
JH
2988 numlen = e - s;
2989 flags = PERL_SCAN_SILENT_ILLDIGIT;
2990 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2991 if (s + numlen < e) {
2992 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2993 numlen = 0;
2994 s--;
2995 }
396482e1 2996 PL_rs = newSVpvs("");
c5661c80 2997 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2998 tmps = (U8*)SvPVX(PL_rs);
2999 uvchr_to_utf8(tmps, rschar);
3000 SvCUR_set(PL_rs, UNISKIP(rschar));
3001 SvUTF8_on(PL_rs);
3002 }
3003 else {
3004 numlen = 4;
3005 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3006 if (rschar & ~((U8)~0))
3007 PL_rs = &PL_sv_undef;
3008 else if (!rschar && numlen >= 2)
396482e1 3009 PL_rs = newSVpvs("");
f2095865
JH
3010 else {
3011 char ch = (char)rschar;
3012 PL_rs = newSVpvn(&ch, 1);
3013 }
3014 }
64ace3f8 3015 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3016 return s + numlen;
a863c7d1 3017 }
46487f74 3018 case 'C':
a05d7ebb 3019 s++;
dd374669 3020 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3021 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3022 PL_utf8cache = -1;
46487f74 3023 return s;
2304df62 3024 case 'F':
3280af22 3025 PL_minus_F = TRUE;
ebce5377
RGS
3026 PL_splitstr = ++s;
3027 while (*s && !isSPACE(*s)) ++s;
e49e380e 3028 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3029 return s;
79072805 3030 case 'a':
3280af22 3031 PL_minus_a = TRUE;
79072805
LW
3032 s++;
3033 return s;
3034 case 'c':
3280af22 3035 PL_minus_c = TRUE;
79072805
LW
3036 s++;
3037 return s;
3038 case 'd':
f20b2998 3039 forbid_setid('d', FALSE);
4633a7c4 3040 s++;
2cbb2ee1
RGS
3041
3042 /* -dt indicates to the debugger that threads will be used */
3043 if (*s == 't' && !isALNUM(s[1])) {
3044 ++s;
3045 my_setenv("PERL5DB_THREADED", "1");
3046 }
3047
70c94a19
RR
3048 /* The following permits -d:Mod to accepts arguments following an =
3049 in the fashion that -MSome::Mod does. */
3050 if (*s == ':' || *s == '=') {
f85893a1
NC
3051 const char *start = ++s;
3052 const char *const end = s + strlen(s);
396482e1 3053 SV * const sv = newSVpvs("use Devel::");
f85893a1 3054
70c94a19
RR
3055 /* We now allow -d:Module=Foo,Bar */
3056 while(isALNUM(*s) || *s==':') ++s;
3057 if (*s != '=')
f85893a1 3058 sv_catpvn(sv, start, end - start);
70c94a19
RR
3059 else {
3060 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3061 /* Don't use NUL as q// delimiter here, this string goes in the
3062 * environment. */
3063 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3064 }
f85893a1 3065 s = end;
184f32ec 3066 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3067 SvREFCNT_dec(sv);
4633a7c4 3068 }
ed094faf 3069 if (!PL_perldb) {
3280af22 3070 PL_perldb = PERLDB_ALL;
a0d0e21e 3071 init_debugger();
ed094faf 3072 }
79072805
LW
3073 return s;
3074 case 'D':
0453d815 3075 {
79072805 3076#ifdef DEBUGGING
f20b2998 3077 forbid_setid('D', FALSE);
b4ab917c 3078 s++;
dd374669 3079 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3080#else /* !DEBUGGING */
0453d815 3081 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3082 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3083 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3084 for (s++; isALNUM(*s); s++) ;
79072805 3085#endif
79072805 3086 return s;
0453d815 3087 }
4633a7c4 3088 case 'h':
ac27b0f5 3089 usage(PL_origargv[0]);
7ca617d0 3090 my_exit(0);
79072805 3091 case 'i':
43c5f42d 3092 Safefree(PL_inplace);
c030f24b
GH
3093#if defined(__CYGWIN__) /* do backup extension automagically */
3094 if (*(s+1) == '\0') {
c86a4f2e 3095 PL_inplace = savepvs(".bak");
c030f24b
GH
3096 return s+1;
3097 }
3098#endif /* __CYGWIN__ */
5ef5d758 3099 {
d4c19fe8 3100 const char * const start = ++s;
5ef5d758
NC
3101 while (*s && !isSPACE(*s))
3102 ++s;
3103
3104 PL_inplace = savepvn(start, s - start);
3105 }
7b8d334a 3106 if (*s) {
5ef5d758 3107 ++s;
7b8d334a 3108 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3109 s++;
7b8d334a 3110 }
fb73857a 3111 return s;
4e49a025 3112 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3113 forbid_setid('I', FALSE);
fb73857a
PP
3114 ++s;
3115 while (*s && isSPACE(*s))
3116 ++s;
3117 if (*s) {
c7030b81 3118 const char *e, *p;
0df16ed7
GS
3119 p = s;
3120 /* ignore trailing spaces (possibly followed by other switches) */
3121 do {
3122 for (e = p; *e && !isSPACE(*e); e++) ;
3123 p = e;
3124 while (isSPACE(*p))
3125 p++;
3126 } while (*p && *p != '-');
55b4bc1c 3127 incpush(s, e-s,
e28f3139 3128 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3129 s = p;
3130 if (*s == '-')
3131 s++;
79072805
LW
3132 }
3133 else
a67e862a 3134 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3135 return s;
79072805 3136 case 'l':
3280af22 3137 PL_minus_l = TRUE;
79072805 3138 s++;
7889fe52
NIS
3139 if (PL_ors_sv) {
3140 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3141 PL_ors_sv = NULL;
7889fe52 3142 }
79072805 3143 if (isDIGIT(*s)) {
53305cf1 3144 I32 flags = 0;
a3b680e6 3145 STRLEN numlen;
396482e1 3146 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3147 numlen = 3 + (*s == '0');
3148 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3149 s += numlen;
3150 }
3151 else {
8bfdd7d9 3152 if (RsPARA(PL_rs)) {
396482e1 3153 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3154 }
3155 else {
8bfdd7d9 3156 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3157 }
79072805
LW
3158 }
3159 return s;
1a30305b 3160 case 'M':
f20b2998 3161 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3162 /* FALL THROUGH */
3163 case 'm':
f20b2998 3164 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3165 if (*++s) {
c7030b81 3166 const char *start;
b64cb68c 3167 const char *end;
11343788 3168 SV *sv;
e1ec3a88 3169 const char *use = "use ";
0544e6df 3170 bool colon = FALSE;
a5f75d66 3171 /* -M-foo == 'no foo' */
d0043bd1
NC
3172 /* Leading space on " no " is deliberate, to make both
3173 possibilities the same length. */
3174 if (*s == '-') { use = " no "; ++s; }
3175 sv = newSVpvn(use,4);
a5f75d66 3176 start = s;
1a30305b 3177 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3178 while(isALNUM(*s) || *s==':') {
3179 if( *s++ == ':' ) {
3180 if( *s == ':' )
3181 s++;
3182 else
3183 colon = TRUE;
3184 }
3185 }
3186 if (s == start)
3187 Perl_croak(aTHX_ "Module name required with -%c option",
3188 option);
3189 if (colon)
3190 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3191 "contains single ':'",
63da6837 3192 (int)(s - start), start, option);
b64cb68c 3193 end = s + strlen(s);
c07a80fd 3194 if (*s != '=') {
b64cb68c 3195 sv_catpvn(sv, start, end - start);
0544e6df 3196 if (option == 'm') {
c07a80fd 3197 if (*s != '\0')
cea2e8a9 3198 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3199 sv_catpvs( sv, " ()");
c07a80fd
PP
3200 }
3201 } else {
11343788 3202 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3203 /* Use NUL as q''-delimiter. */
3204 sv_catpvs(sv, " split(/,/,q\0");
3205 ++s;
3206 sv_catpvn(sv, s, end - s);
396482e1 3207 sv_catpvs(sv, "\0)");
c07a80fd 3208 }
b64cb68c 3209 s = end;
29a861e7 3210 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3211 }
3212 else
0544e6df 3213 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3214 return s;
79072805 3215 case 'n':
3280af22 3216 PL_minus_n = TRUE;
79072805
LW
3217 s++;
3218 return s;
3219 case 'p':
3280af22 3220 PL_minus_p = TRUE;
79072805
LW
3221 s++;
3222 return s;
3223 case 's':
f20b2998 3224 forbid_setid('s', FALSE);
3280af22 3225 PL_doswitches = TRUE;
79072805
LW
3226 s++;
3227 return s;
6537fe72
MS
3228 case 't':
3229 if (!PL_tainting)
22f7c9c9 3230 TOO_LATE_FOR('t');
6537fe72
MS
3231 s++;
3232 return s;
463ee0b2 3233 case 'T':
3280af22 3234 if (!PL_tainting)
22f7c9c9 3235 TOO_LATE_FOR('T');
463ee0b2
LW
3236 s++;
3237 return s;
79072805 3238 case 'u':
3280af22 3239 PL_do_undump = TRUE;
79072805
LW
3240 s++;
3241 return s;
3242 case 'U':
3280af22 3243 PL_unsafe = TRUE;
79072805
LW
3244 s++;
3245 return s;
3246 case 'v':
d7aa5382 3247 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3248 upg_version(PL_patchlevel, TRUE);
8e9464f1 3249#if !defined(DGUX)
46807d8e
YO
3250 {
3251 SV* level= vstringify(PL_patchlevel);
3252#ifdef PERL_PATCHNUM
23d483e2
NC
3253# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3254 SV *num = newSVpvs(PERL_PATCHNUM "*");
3255# else
3256 SV *num = newSVpvs(PERL_PATCHNUM);
3257# endif
46807d8e
YO
3258
3259 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3260 SvREFCNT_dec(level);
3261 level= num;
3262 } else {
d0a9311f 3263 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3264 SvREFCNT_dec(num);
3265 }
3266 #endif
3267 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3268 "\nThis is perl " STRINGIFY(PERL_REVISION)
3269 ", version " STRINGIFY(PERL_VERSION)
3270 ", subversion " STRINGIFY(PERL_SUBVERSION)
3271 " (%"SVf") built for " ARCHNAME, level
3272 );
46807d8e
YO
3273 SvREFCNT_dec(level);
3274 }
8e9464f1
JH
3275#else /* DGUX */
3276/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3277 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3278 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3279 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3280 PerlIO_printf(PerlIO_stdout(),
3281 Perl_form(aTHX_ " built under %s at %s %s\n",
3282 OSNAME, __DATE__, __TIME__));
3283 PerlIO_printf(PerlIO_stdout(),
3284 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3285 OSVERS));
8e9464f1 3286#endif /* !DGUX */
fb73857a
PP
3287#if defined(LOCAL_PATCH_COUNT)
3288 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3289 PerlIO_printf(PerlIO_stdout(),
3290 "\n(with %d registered patch%s, "
3291 "see perl -V for more detail)",
bb7a0f54 3292 LOCAL_PATCH_COUNT,
b0e47665 3293 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3294#endif
1a30305b 3295
b0e47665 3296 PerlIO_printf(PerlIO_stdout(),
32709fdf 3297 "\n\nCopyright 1987-2010, Larry Wall\n");
79072805 3298#ifdef MSDOS
b0e47665
GS
3299 PerlIO_printf(PerlIO_stdout(),
3300 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3301#endif
3302#ifdef DJGPP
b0e47665
GS
3303 PerlIO_printf(PerlIO_stdout(),
3304 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3305 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3306#endif
79072805 3307#ifdef OS2
b0e47665
GS
3308 PerlIO_printf(PerlIO_stdout(),
3309 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3310 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3311#endif
79072805 3312#ifdef atarist
b0e47665
GS
3313 PerlIO_printf(PerlIO_stdout(),
3314 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3315#endif
a3f9223b 3316#ifdef __BEOS__
b0e47665
GS
3317 PerlIO_printf(PerlIO_stdout(),
3318 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3319#endif
1d84e8df 3320#ifdef MPE
b0e47665 3321 PerlIO_printf(PerlIO_stdout(),
e583a879 3322 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3323#endif
9d116dd7 3324#ifdef OEMVS
b0e47665
GS
3325 PerlIO_printf(PerlIO_stdout(),
3326 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3327#endif
495c5fdc 3328#ifdef __VOS__
b0e47665 3329 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3330 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3331#endif
092bebab 3332#ifdef __OPEN_VM
b0e47665
GS
3333 PerlIO_printf(PerlIO_stdout(),
3334 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3335#endif
a1a0e61e 3336#ifdef POSIX_BC
b0e47665
GS
3337 PerlIO_printf(PerlIO_stdout(),
3338 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3339#endif
f83d2536 3340#ifdef EPOC
b0e47665 3341 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3342 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3343#endif
e1caacb4 3344#ifdef UNDER_CE
b475b3e6
JH
3345 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3346 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3347 wce_hitreturn();
3348#endif
a0fd4948 3349#ifdef __SYMBIAN32__
27da23d5
JH
3350 PerlIO_printf(PerlIO_stdout(),
3351 "Symbian port by Nokia, 2004-2005\n");
3352#endif
baed7233
DL
3353#ifdef BINARY_BUILD_NOTICE
3354 BINARY_BUILD_NOTICE;
3355#endif
b0e47665
GS
3356 PerlIO_printf(PerlIO_stdout(),
3357 "\n\
79072805 3358Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3359GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3360Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3361this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3362Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3363 my_exit(0);
79072805 3364 case 'w':
b2e5e6ba 3365 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3366 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3367 }
599cee73
PM
3368 s++;
3369 return s;
3370 case 'W':
ac27b0f5 3371 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3372 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3373 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3374 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3375 s++;
3376 return s;
3377 case 'X':
ac27b0f5 3378 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3379 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3380 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3381 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3382 s++;
3383 return s;
a0d0e21e 3384 case '*':
79072805 3385 case ' ':
d3133c89
NC
3386 while( *s == ' ' )
3387 ++s;
3388 if (s[0] == '-') /* Additional switches on #! line. */
3389 return s+1;
79072805 3390 break;
a0d0e21e 3391 case '-':
79072805 3392 case 0:
51882d45 3393#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3394 case '\r':
3395#endif
79072805
LW
3396 case '\n':
3397 case '\t':
3398 break;
aa689395
PP
3399#ifdef ALTERNATE_SHEBANG
3400 case 'S': /* OS/2 needs -S on "extproc" line. */
3401 break;
3402#endif
79072805 3403 default:
cea2e8a9 3404 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3405 }
bd61b366 3406 return NULL;
79072805
LW
3407}
3408
3409/* compliments of Tom Christiansen */
3410
3411/* unexec() can be found in the Gnu emacs distribution */
ee580363 3412/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3413
3414void
864dbfa3 3415Perl_my_unexec(pTHX)
79072805 3416{
b37c2d43 3417 PERL_UNUSED_CONTEXT;
79072805 3418#ifdef UNEXEC
b37c2d43
AL
3419 SV * prog = newSVpv(BIN_EXP, 0);
3420 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3421 int status = 1;
79072805
LW
3422 extern int etext;
3423
396482e1 3424 sv_catpvs(prog, "/perl");
396482e1 3425 sv_catpvs(file, ".perldump");
79072805 3426
ee580363
GS
3427 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3428 /* unexec prints msg to stderr in case of failure */
6ad3d225 3429 PerlProc_exit(status);
79072805 3430#else
a5f75d66
AD
3431# ifdef VMS
3432# include <lib$routines.h>
3433 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3434# elif defined(WIN32) || defined(__CYGWIN__)
3435 Perl_croak(aTHX_ "dump is not supported");
aa689395 3436# else
79072805 3437 ABORT(); /* for use with undump */
aa689395 3438# endif
a5f75d66 3439#endif
79072805
LW
3440}
3441
cb68f92d
GS
3442/* initialize curinterp */
3443STATIC void
cea2e8a9 3444S_init_interp(pTHX)
cb68f92d 3445{
97aff369 3446 dVAR;
acfe0abc
GS
3447#ifdef MULTIPLICITY
3448# define PERLVAR(var,type)
3449# define PERLVARA(var,n,type)
3450# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3451# define PERLVARI(var,type,init) aTHX->var = init;
3452# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3453# else
acfe0abc
GS
3454# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3455# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3456# endif
acfe0abc 3457# include "intrpvar.h"
acfe0abc
GS
3458# undef PERLVAR
3459# undef PERLVARA
3460# undef PERLVARI
3461# undef PERLVARIC
3462#else
3463# define PERLVAR(var,type)
3464# define PERLVARA(var,n,type)
3465# define PERLVARI(var,type,init) PL_##var = init;
3466# define PERLVARIC(var,type,init) PL_##var = init;
3467# include "intrpvar.h"
acfe0abc
GS
3468# undef PERLVAR
3469# undef PERLVARA
3470# undef PERLVARI
3471# undef PERLVARIC
cb68f92d
GS
3472#endif
3473
46ab3289
NC
3474 /* As these are inside a structure, PERLVARI isn't capable of initialising
3475 them */
6c3f0a89
NC
3476 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3477 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3478}
3479
76e3520e 3480STATIC void
cea2e8a9 3481S_init_main_stash(pTHX)
79072805 3482{
97aff369 3483 dVAR;
463ee0b2 3484 GV *gv;
6e72f9df 3485
3280af22 3486 PL_curstash = PL_defstash = newHV();
23579a14
NC
3487 /* We know that the string "main" will be in the global shared string
3488 table, so it's a small saving to use it rather than allocate another
3489 8 bytes. */
18916d0d 3490 PL_curstname = newSVpvs_share("main");
fafc274c 3491 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3492 /* If we hadn't caused another reference to "main" to be in the shared
3493 string table above, then it would be worth reordering these two,
3494 because otherwise all we do is delete "main" from it as a consequence
3495 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3496 SvREFCNT_dec(GvHV(gv));
23579a14