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Tie::Hash::NamedCapture::* shouldn't abort if passed bad input [RT #71828]
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
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4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others
a687059c 6 *
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LW
7 * You may distribute under the terms of either the GNU General Public
8 * License or the Artistic License, as specified in the README file.
a687059c 9 *
8d063cd8
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10 */
11
a0d0e21e 12/*
4ac71550
TC
13 * A ship then new they built for him
14 * of mithril and of elven-glass
15 * --from Bilbo's song of Eärendil
16 *
17 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 18 */
45d8adaa 19
166f8a29
DM
20/* This file contains the top-level functions that are used to create, use
21 * and destroy a perl interpreter, plus the functions used by XS code to
22 * call back into perl. Note that it does not contain the actual main()
ddfa107c 23 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
24 */
25
378cc40b 26#include "EXTERN.h"
864dbfa3 27#define PERL_IN_PERL_C
378cc40b 28#include "perl.h"
e3321bb0 29#include "patchlevel.h" /* for local_patches */
4a5df386 30#include "XSUB.h"
378cc40b 31
011f1a1a
JH
32#ifdef NETWARE
33#include "nwutil.h"
011f1a1a
JH
34#endif
35
df5cef82 36/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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37#ifdef I_UNISTD
38#include <unistd.h>
39#endif
a0d0e21e 40
2aa47728
NC
41#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
42# ifdef I_SYS_WAIT
43# include <sys/wait.h>
44# endif
bf357333
NC
45# ifdef I_SYSUIO
46# include <sys/uio.h>
47# endif
48
49union control_un {
50 struct cmsghdr cm;
51 char control[CMSG_SPACE(sizeof(int))];
52};
53
2aa47728
NC
54#endif
55
5311654c
JH
56#ifdef __BEOS__
57# define HZ 1000000
58#endif
59
60#ifndef HZ
61# ifdef CLK_TCK
62# define HZ CLK_TCK
63# else
64# define HZ 60
65# endif
66#endif
67
7114a2d2 68#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 69char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
70#endif
71
acfe0abc 72static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 73
cc69b689 74#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 75/* Drop everything. Heck, don't even try to call it */
cc69b689
NC
76# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
77#else
ec2019ad 78/* Drop almost everything */
cc69b689 79# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 80#endif
8d063cd8 81
d6f07c05
AL
82#define CALL_BODY_EVAL(myop) \
83 if (PL_op == (myop)) \
139d0ce6 84 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX); \
d6f07c05
AL
85 if (PL_op) \
86 CALLRUNOPS(aTHX);
87
88#define CALL_BODY_SUB(myop) \
89 if (PL_op == (myop)) \
139d0ce6 90 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
91 if (PL_op) \
92 CALLRUNOPS(aTHX);
93
94#define CALL_LIST_BODY(cv) \
95 PUSHMARK(PL_stack_sp); \
ad64d0ec 96 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
d6f07c05 97
e6827a76 98static void
daa7d858 99S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 100{
27da23d5 101 dVAR;
e6827a76
NC
102 if (!PL_curinterp) {
103 PERL_SET_INTERP(my_perl);
3db8f154 104#if defined(USE_ITHREADS)
e6827a76
NC
105 INIT_THREADS;
106 ALLOC_THREAD_KEY;
107 PERL_SET_THX(my_perl);
108 OP_REFCNT_INIT;
71ad1b0c 109 HINTS_REFCNT_INIT;
e6827a76 110 MUTEX_INIT(&PL_dollarzero_mutex);
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DM
111 MUTEX_INIT(&PL_my_ctx_mutex);
112# endif
e6827a76 113 }
c0bce9aa
NC
114#if defined(USE_ITHREADS)
115 else
116#else
117 /* This always happens for non-ithreads */
118#endif
119 {
e6827a76
NC
120 PERL_SET_THX(my_perl);
121 }
122}
06d86050 123
cbec8ebe
DM
124
125/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
126
127void
128Perl_sys_init(int* argc, char*** argv)
129{
4fc0badb 130 dVAR;
7918f24d
NC
131
132 PERL_ARGS_ASSERT_SYS_INIT;
133
cbec8ebe
DM
134 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
135 PERL_UNUSED_ARG(argv);
136 PERL_SYS_INIT_BODY(argc, argv);
137}
138
139void
140Perl_sys_init3(int* argc, char*** argv, char*** env)
141{
4fc0badb 142 dVAR;
7918f24d
NC
143
144 PERL_ARGS_ASSERT_SYS_INIT3;
145
cbec8ebe
DM
146 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
147 PERL_UNUSED_ARG(argv);
148 PERL_UNUSED_ARG(env);
149 PERL_SYS_INIT3_BODY(argc, argv, env);
150}
151
152void
d0820ef1 153Perl_sys_term()
cbec8ebe 154{
4fc0badb 155 dVAR;
bf81751b
DM
156 if (!PL_veto_cleanup) {
157 PERL_SYS_TERM_BODY();
158 }
cbec8ebe
DM
159}
160
161
32e30700
GS
162#ifdef PERL_IMPLICIT_SYS
163PerlInterpreter *
7766f137
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164perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
165 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
166 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
167 struct IPerlDir* ipD, struct IPerlSock* ipS,
168 struct IPerlProc* ipP)
169{
170 PerlInterpreter *my_perl;
7918f24d
NC
171
172 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
173
9f653bb5 174 /* Newx() needs interpreter, so call malloc() instead */
32e30700 175 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 176 S_init_tls_and_interp(my_perl);
32e30700
GS
177 Zero(my_perl, 1, PerlInterpreter);
178 PL_Mem = ipM;
7766f137
GS
179 PL_MemShared = ipMS;
180 PL_MemParse = ipMP;
32e30700
GS
181 PL_Env = ipE;
182 PL_StdIO = ipStd;
183 PL_LIO = ipLIO;
184 PL_Dir = ipD;
185 PL_Sock = ipS;
186 PL_Proc = ipP;
7cb608b5 187 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 188
32e30700
GS
189 return my_perl;
190}
191#else
954c1994
GS
192
193/*
ccfc67b7
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194=head1 Embedding Functions
195
954c1994
GS
196=for apidoc perl_alloc
197
198Allocates a new Perl interpreter. See L<perlembed>.
199
200=cut
201*/
202
93a17b20 203PerlInterpreter *
cea2e8a9 204perl_alloc(void)
79072805 205{
cea2e8a9 206 PerlInterpreter *my_perl;
79072805 207
9f653bb5 208 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 209 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 210
e6827a76 211 S_init_tls_and_interp(my_perl);
7cb608b5 212#ifndef PERL_TRACK_MEMPOOL
07409e01 213 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
214#else
215 Zero(my_perl, 1, PerlInterpreter);
216 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
217 return my_perl;
218#endif
79072805 219}
32e30700 220#endif /* PERL_IMPLICIT_SYS */
79072805 221
954c1994
GS
222/*
223=for apidoc perl_construct
224
225Initializes a new Perl interpreter. See L<perlembed>.
226
227=cut
228*/
229
79072805 230void
0cb96387 231perl_construct(pTHXx)
79072805 232{
27da23d5 233 dVAR;
7918f24d
NC
234
235 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
236
8990e307 237#ifdef MULTIPLICITY
54aff467 238 init_interp();
ac27b0f5 239 PL_perl_destruct_level = 1;
54aff467 240#else
7918f24d 241 PERL_UNUSED_ARG(my_perl);
54aff467
GS
242 if (PL_perl_destruct_level > 0)
243 init_interp();
244#endif
34caed6d
DM
245 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
246
34caed6d
DM
247 /* set read-only and try to insure than we wont see REFCNT==0
248 very often */
249
250 SvREADONLY_on(&PL_sv_undef);
251 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
252
253 sv_setpv(&PL_sv_no,PL_No);
254 /* value lookup in void context - happens to have the side effect
a43d94f2
NC
255 of caching the numeric forms. However, as &PL_sv_no doesn't contain
256 a string that is a valid numer, we have to turn the public flags by
257 hand: */
34caed6d 258 SvNV(&PL_sv_no);
c1939273 259 SvIV(&PL_sv_no);
a43d94f2
NC
260 SvIOK_on(&PL_sv_no);
261 SvNOK_on(&PL_sv_no);
34caed6d
DM
262 SvREADONLY_on(&PL_sv_no);
263 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
264
265 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 266 SvNV(&PL_sv_yes);
c1939273 267 SvIV(&PL_sv_yes);
34caed6d
DM
268 SvREADONLY_on(&PL_sv_yes);
269 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
270
271 SvREADONLY_on(&PL_sv_placeholder);
272 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
273
274 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 275#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 276 PL_pidstatus = newHV();
ca0c25f6 277#endif
79072805 278
396482e1 279 PL_rs = newSVpvs("\n");
dc92893f 280
cea2e8a9 281 init_stacks();
79072805 282
748a9306 283 init_ids();
a5f75d66 284
312caa8e 285 JMPENV_BOOTSTRAP;
f86702cc
PP
286 STATUS_ALL_SUCCESS;
287
0672f40e 288 init_i18nl10n(1);
36477c24 289 SET_NUMERIC_STANDARD();
0b5b802d 290
ab821d7f 291#if defined(LOCAL_PATCH_COUNT)
3280af22 292 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
293#endif
294
52853b95
GS
295#ifdef HAVE_INTERP_INTERN
296 sys_intern_init();
297#endif
298
3a1ee7e8 299 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 300
3280af22
NIS
301 PL_fdpid = newAV(); /* for remembering popen pids by fd */
302 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 303 PL_errors = newSVpvs("");
76f68e9b
MHM
304 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
305 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
306 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 307#ifdef USE_ITHREADS
402d2eb1
NC
308 /* First entry is a list of empty elements. It needs to be initialised
309 else all hell breaks loose in S_find_uninit_var(). */
310 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 311 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 312#endif
e5dd39fc 313#ifdef USE_REENTRANT_API
59bd0823 314 Perl_reentrant_init(aTHX);
e5dd39fc 315#endif
3d47000e
AB
316
317 /* Note that strtab is a rather special HV. Assumptions are made
318 about not iterating on it, and not adding tie magic to it.
319 It is properly deallocated in perl_destruct() */
320 PL_strtab = newHV();
321
3d47000e
AB
322 HvSHAREKEYS_off(PL_strtab); /* mandatory */
323 hv_ksplit(PL_strtab, 512);
324
0631ea03
AB
325#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
326 _dyld_lookup_and_bind
327 ("__environ", (unsigned long *) &environ_pointer, NULL);
328#endif /* environ */
329
2f42fcb0
JH
330#ifndef PERL_MICRO
331# ifdef USE_ENVIRON_ARRAY
0631ea03 332 PL_origenviron = environ;
2f42fcb0 333# endif
0631ea03
AB
334#endif
335
5311654c 336 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 337 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
338 * BeOS has those, but returns the wrong value.
339 * The HZ if not originally defined has been by now
340 * been defined as CLK_TCK, if available. */
dbc1d986 341#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
342 PL_clocktick = sysconf(_SC_CLK_TCK);
343 if (PL_clocktick <= 0)
344#endif
345 PL_clocktick = HZ;
346
081fc587
AB
347 PL_stashcache = newHV();
348
e8e3635e 349 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 350
27da23d5
JH
351#ifdef HAS_MMAP
352 if (!PL_mmap_page_size) {
353#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
354 {
355 SETERRNO(0, SS_NORMAL);
356# ifdef _SC_PAGESIZE
357 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
358# else
359 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
360# endif
361 if ((long) PL_mmap_page_size < 0) {
362 if (errno) {
44f8325f 363 SV * const error = ERRSV;
d4c19fe8 364 SvUPGRADE(error, SVt_PV);
0510663f 365 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
366 }
367 else
368 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
369 }
370 }
371#else
372# ifdef HAS_GETPAGESIZE
373 PL_mmap_page_size = getpagesize();
374# else
375# if defined(I_SYS_PARAM) && defined(PAGESIZE)
376 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
377# endif
378# endif
379#endif
380 if (PL_mmap_page_size <= 0)
381 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
382 (IV) PL_mmap_page_size);
383 }
384#endif /* HAS_MMAP */
385
386#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
387 PL_timesbase.tms_utime = 0;
388 PL_timesbase.tms_stime = 0;
389 PL_timesbase.tms_cutime = 0;
390 PL_timesbase.tms_cstime = 0;
391#endif
392
7d113631
NC
393 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
394
a3e6e81e 395 PL_registered_mros = newHV();
9e169432
NC
396 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
397 HvMAX(PL_registered_mros) = 0;
a3e6e81e 398
8990e307 399 ENTER;
79072805
LW
400}
401
954c1994 402/*
62375a60
NIS
403=for apidoc nothreadhook
404
405Stub that provides thread hook for perl_destruct when there are
406no threads.
407
408=cut
409*/
410
411int
4e9e3734 412Perl_nothreadhook(pTHX)
62375a60 413{
96a5add6 414 PERL_UNUSED_CONTEXT;
62375a60
NIS
415 return 0;
416}
417
41e4abd8
NC
418#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
419void
420Perl_dump_sv_child(pTHX_ SV *sv)
421{
422 ssize_t got;
bf357333
NC
423 const int sock = PL_dumper_fd;
424 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
425 union control_un control;
426 struct msghdr msg;
808ad2d0 427 struct iovec vec[2];
bf357333 428 struct cmsghdr *cmptr;
808ad2d0
NC
429 int returned_errno;
430 unsigned char buffer[256];
41e4abd8 431
7918f24d
NC
432 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
433
bf357333 434 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
435 return;
436
437 PerlIO_flush(Perl_debug_log);
438
bf357333
NC
439 /* All these shenanigans are to pass a file descriptor over to our child for
440 it to dump out to. We can't let it hold open the file descriptor when it
441 forks, as the file descriptor it will dump to can turn out to be one end
442 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 443 be open, the wait would be forever.) */
bf357333
NC
444
445 msg.msg_control = control.control;
446 msg.msg_controllen = sizeof(control.control);
447 /* We're a connected socket so we don't need a destination */
448 msg.msg_name = NULL;
449 msg.msg_namelen = 0;
450 msg.msg_iov = vec;
808ad2d0 451 msg.msg_iovlen = 1;
bf357333
NC
452
453 cmptr = CMSG_FIRSTHDR(&msg);
454 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
455 cmptr->cmsg_level = SOL_SOCKET;
456 cmptr->cmsg_type = SCM_RIGHTS;
457 *((int *)CMSG_DATA(cmptr)) = 1;
458
459 vec[0].iov_base = (void*)&sv;
460 vec[0].iov_len = sizeof(sv);
461 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
462
463 if(got < 0) {
bf357333 464 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
465 abort();
466 }
bf357333
NC
467 if(got < sizeof(sv)) {
468 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
469 abort();
470 }
471
808ad2d0
NC
472 /* Return protocol is
473 int: errno value
474 unsigned char: length of location string (0 for empty)
475 unsigned char*: string (not terminated)
476 */
477 vec[0].iov_base = (void*)&returned_errno;
478 vec[0].iov_len = sizeof(returned_errno);
479 vec[1].iov_base = buffer;
480 vec[1].iov_len = 1;
481
482 got = readv(sock, vec, 2);
41e4abd8
NC
483
484 if(got < 0) {
485 perror("Debug leaking scalars parent read failed");
808ad2d0 486 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
487 abort();
488 }
808ad2d0 489 if(got < sizeof(returned_errno) + 1) {
41e4abd8 490 perror("Debug leaking scalars parent short read");
808ad2d0 491 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
492 abort();
493 }
494
808ad2d0
NC
495 if (*buffer) {
496 got = read(sock, buffer + 1, *buffer);
497 if(got < 0) {
498 perror("Debug leaking scalars parent read 2 failed");
499 PerlIO_flush(PerlIO_stderr());
500 abort();
501 }
502
503 if(got < *buffer) {
504 perror("Debug leaking scalars parent short read 2");
505 PerlIO_flush(PerlIO_stderr());
506 abort();
507 }
508 }
509
510 if (returned_errno || *buffer) {
511 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
512 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
513 returned_errno, strerror(returned_errno));
41e4abd8
NC
514 }
515}
516#endif
517
62375a60 518/*
954c1994
GS
519=for apidoc perl_destruct
520
521Shuts down a Perl interpreter. See L<perlembed>.
522
523=cut
524*/
525
31d77e54 526int
0cb96387 527perl_destruct(pTHXx)
79072805 528{
27da23d5 529 dVAR;
be2ea8ed 530 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 531 HV *hv;
2aa47728 532#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
533 pid_t child;
534#endif
8990e307 535
7918f24d
NC
536 PERL_ARGS_ASSERT_PERL_DESTRUCT;
537#ifndef MULTIPLICITY
ed6c66dd 538 PERL_UNUSED_ARG(my_perl);
7918f24d 539#endif
9d4ba2ae 540
3d22c4f0
GG
541 assert(PL_scopestack_ix == 1);
542
7766f137
GS
543 /* wait for all pseudo-forked children to finish */
544 PERL_WAIT_FOR_CHILDREN;
545
3280af22 546 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
547#ifdef DEBUGGING
548 {
9d4ba2ae
AL
549 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
550 if (s) {
e1ec3a88 551 const int i = atoi(s);
5f05dabc
PP
552 if (destruct_level < i)
553 destruct_level = i;
554 }
4633a7c4
LW
555 }
556#endif
557
27da23d5 558 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
559 dJMPENV;
560 int x = 0;
561
562 JMPENV_PUSH(x);
1b6737cc 563 PERL_UNUSED_VAR(x);
f3faeb53
AB
564 if (PL_endav && !PL_minus_c)
565 call_list(PL_scopestack_ix, PL_endav);
566 JMPENV_POP;
26f423df 567 }
f3faeb53 568 LEAVE;
a0d0e21e 569 FREETMPS;
3d22c4f0 570 assert(PL_scopestack_ix == 0);
a0d0e21e 571
e00b64d4 572 /* Need to flush since END blocks can produce output */
f13a2bc0 573 my_fflush_all();
e00b64d4 574
62375a60
NIS
575 if (CALL_FPTR(PL_threadhook)(aTHX)) {
576 /* Threads hook has vetoed further cleanup */
c301d606 577 PL_veto_cleanup = TRUE;
37038d91 578 return STATUS_EXIT;
62375a60
NIS
579 }
580
2aa47728
NC
581#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
582 if (destruct_level != 0) {
583 /* Fork here to create a child. Our child's job is to preserve the
584 state of scalars prior to destruction, so that we can instruct it
585 to dump any scalars that we later find have leaked.
586 There's no subtlety in this code - it assumes POSIX, and it doesn't
587 fail gracefully */
588 int fd[2];
589
590 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
591 perror("Debug leaking scalars socketpair failed");
592 abort();
593 }
594
595 child = fork();
596 if(child == -1) {
597 perror("Debug leaking scalars fork failed");
598 abort();
599 }
600 if (!child) {
601 /* We are the child */
3125a5a4
NC
602 const int sock = fd[1];
603 const int debug_fd = PerlIO_fileno(Perl_debug_log);
604 int f;
808ad2d0
NC
605 const char *where;
606 /* Our success message is an integer 0, and a char 0 */
b61433a9 607 static const char success[sizeof(int) + 1] = {0};
3125a5a4 608
2aa47728 609 close(fd[0]);
2aa47728 610
3125a5a4
NC
611 /* We need to close all other file descriptors otherwise we end up
612 with interesting hangs, where the parent closes its end of a
613 pipe, and sits waiting for (another) child to terminate. Only
614 that child never terminates, because it never gets EOF, because
bf357333
NC
615 we also have the far end of the pipe open. We even need to
616 close the debugging fd, because sometimes it happens to be one
617 end of a pipe, and a process is waiting on the other end for
618 EOF. Normally it would be closed at some point earlier in
619 destruction, but if we happen to cause the pipe to remain open,
620 EOF never occurs, and we get an infinite hang. Hence all the
621 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
622
623 f = sysconf(_SC_OPEN_MAX);
624 if(f < 0) {
808ad2d0
NC
625 where = "sysconf failed";
626 goto abort;
3125a5a4
NC
627 }
628 while (f--) {
629 if (f == sock)
630 continue;
3125a5a4
NC
631 close(f);
632 }
633
2aa47728
NC
634 while (1) {
635 SV *target;
bf357333
NC
636 union control_un control;
637 struct msghdr msg;
638 struct iovec vec[1];
639 struct cmsghdr *cmptr;
640 ssize_t got;
641 int got_fd;
642
643 msg.msg_control = control.control;
644 msg.msg_controllen = sizeof(control.control);
645 /* We're a connected socket so we don't need a source */
646 msg.msg_name = NULL;
647 msg.msg_namelen = 0;
648 msg.msg_iov = vec;
649 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
650
651 vec[0].iov_base = (void*)&target;
652 vec[0].iov_len = sizeof(target);
653
654 got = recvmsg(sock, &msg, 0);
2aa47728
NC
655
656 if(got == 0)
657 break;
658 if(got < 0) {
808ad2d0
NC
659 where = "recv failed";
660 goto abort;
2aa47728
NC
661 }
662 if(got < sizeof(target)) {
808ad2d0
NC
663 where = "short recv";
664 goto abort;
2aa47728 665 }
bf357333 666
808ad2d0
NC
667 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
668 where = "no cmsg";
669 goto abort;
670 }
671 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
672 where = "wrong cmsg_len";
673 goto abort;
674 }
675 if(cmptr->cmsg_level != SOL_SOCKET) {
676 where = "wrong cmsg_level";
677 goto abort;
678 }
679 if(cmptr->cmsg_type != SCM_RIGHTS) {
680 where = "wrong cmsg_type";
681 goto abort;
682 }
bf357333
NC
683
684 got_fd = *(int*)CMSG_DATA(cmptr);
685 /* For our last little bit of trickery, put the file descriptor
686 back into Perl_debug_log, as if we never actually closed it
687 */
808ad2d0
NC
688 if(got_fd != debug_fd) {
689 if (dup2(got_fd, debug_fd) == -1) {
690 where = "dup2";
691 goto abort;
692 }
693 }
2aa47728 694 sv_dump(target);
bf357333 695
2aa47728
NC
696 PerlIO_flush(Perl_debug_log);
697
808ad2d0 698 got = write(sock, &success, sizeof(success));
2aa47728
NC
699
700 if(got < 0) {
808ad2d0
NC
701 where = "write failed";
702 goto abort;
2aa47728 703 }
808ad2d0
NC
704 if(got < sizeof(success)) {
705 where = "short write";
706 goto abort;
2aa47728
NC
707 }
708 }
709 _exit(0);
808ad2d0
NC
710 abort:
711 {
712 int send_errno = errno;
713 unsigned char length = (unsigned char) strlen(where);
714 struct iovec failure[3] = {
715 {(void*)&send_errno, sizeof(send_errno)},
716 {&length, 1},
717 {(void*)where, length}
718 };
719 int got = writev(sock, failure, 3);
720 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
721 in the parent if we try to read from the socketpair after the
722 child has exited, even if there was data to read.
723 So sleep a bit to give the parent a fighting chance of
724 reading the data. */
725 sleep(2);
726 _exit((got == -1) ? errno : 0);
727 }
bf357333 728 /* End of child. */
2aa47728 729 }
41e4abd8 730 PL_dumper_fd = fd[0];
2aa47728
NC
731 close(fd[1]);
732 }
733#endif
734
ff0cee69
PP
735 /* We must account for everything. */
736
737 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
738 /* Do this now, because destroying ops can cause new SVs to be generated
739 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
740 PL_curcop to point to a valid op from which the filename structure
741 member is copied. */
742 PL_curcop = &PL_compiling;
3280af22 743 if (PL_main_root) {
4e380990
DM
744 /* ensure comppad/curpad to refer to main's pad */
745 if (CvPADLIST(PL_main_cv)) {
746 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
747 }
3280af22 748 op_free(PL_main_root);
5f66b61c 749 PL_main_root = NULL;
a0d0e21e 750 }
5f66b61c 751 PL_main_start = NULL;
3280af22 752 SvREFCNT_dec(PL_main_cv);
601f1833 753 PL_main_cv = NULL;
24d3c518 754 PL_dirty = TRUE;
ff0cee69 755
13621cfb
NIS
756 /* Tell PerlIO we are about to tear things apart in case
757 we have layers which are using resources that should
758 be cleaned up now.
759 */
760
761 PerlIO_destruct(aTHX);
762
3280af22 763 if (PL_sv_objcount) {
a0d0e21e
LW
764 /*
765 * Try to destruct global references. We do this first so that the
766 * destructors and destructees still exist. Some sv's might remain.
767 * Non-referenced objects are on their own.
768 */
a0d0e21e 769 sv_clean_objs();
bf9cdc68 770 PL_sv_objcount = 0;
a0de6cf5 771 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 772 PL_defoutgv = NULL; /* may have been freed */
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
804ffa60 834 /* reset so print() ends up where we expect */
a0714e2c 835 setdefout(NULL);
804ffa60 836
5f8cb046
DM
837#ifdef USE_ITHREADS
838 /* the syntax tree is shared between clones
839 * so op_free(PL_main_root) only ReREFCNT_dec's
840 * REGEXPs in the parent interpreter
841 * we need to manually ReREFCNT_dec for the clones
842 */
5f8cb046 843 SvREFCNT_dec(PL_regex_padav);
7d49f689 844 PL_regex_padav = NULL;
5f8cb046
DM
845 PL_regex_pad = NULL;
846#endif
847
ad64d0ec 848 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
849 PL_stashcache = NULL;
850
5f05dabc
PP
851 /* loosen bonds of global variables */
852
2f9285f8
DM
853 /* XXX can PL_parser still be non-null here? */
854 if(PL_parser && PL_parser->rsfp) {
855 (void)PerlIO_close(PL_parser->rsfp);
856 PL_parser->rsfp = NULL;
8ebc5c01
PP
857 }
858
84386e14
RGS
859 if (PL_minus_F) {
860 Safefree(PL_splitstr);
861 PL_splitstr = NULL;
862 }
863
8ebc5c01 864 /* switches */
3280af22
NIS
865 PL_minus_n = FALSE;
866 PL_minus_p = FALSE;
867 PL_minus_l = FALSE;
868 PL_minus_a = FALSE;
869 PL_minus_F = FALSE;
870 PL_doswitches = FALSE;
599cee73 871 PL_dowarn = G_WARN_OFF;
3280af22
NIS
872 PL_doextract = FALSE;
873 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
874 PL_unsafe = FALSE;
875
876 Safefree(PL_inplace);
bd61b366 877 PL_inplace = NULL;
a7cb1f99 878 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
879
880 if (PL_e_script) {
881 SvREFCNT_dec(PL_e_script);
a0714e2c 882 PL_e_script = NULL;
8ebc5c01
PP
883 }
884
bf9cdc68
RG
885 PL_perldb = 0;
886
8ebc5c01
PP
887 /* magical thingies */
888
e23d9e2f
CS
889 SvREFCNT_dec(PL_ofsgv); /* *, */
890 PL_ofsgv = NULL;
5f05dabc 891
7889fe52 892 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 893 PL_ors_sv = NULL;
8ebc5c01 894
3280af22 895 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 896 PL_rs = NULL;
dc92893f 897
d33b2eba 898 Safefree(PL_osname); /* $^O */
bd61b366 899 PL_osname = NULL;
5f05dabc 900
3280af22 901 SvREFCNT_dec(PL_statname);
a0714e2c
SS
902 PL_statname = NULL;
903 PL_statgv = NULL;
5f05dabc 904
8ebc5c01
PP
905 /* defgv, aka *_ should be taken care of elsewhere */
906
8ebc5c01 907 /* clean up after study() */
3280af22 908 SvREFCNT_dec(PL_lastscream);
a0714e2c 909 PL_lastscream = NULL;
3280af22
NIS
910 Safefree(PL_screamfirst);
911 PL_screamfirst = 0;
912 Safefree(PL_screamnext);
913 PL_screamnext = 0;
8ebc5c01 914
7d5ea4e7
GS
915 /* float buffer */
916 Safefree(PL_efloatbuf);
bd61b366 917 PL_efloatbuf = NULL;
7d5ea4e7
GS
918 PL_efloatsize = 0;
919
8ebc5c01 920 /* startup and shutdown function lists */
3280af22 921 SvREFCNT_dec(PL_beginav);
5a837c8f 922 SvREFCNT_dec(PL_beginav_save);
3280af22 923 SvREFCNT_dec(PL_endav);
7d30b5c4 924 SvREFCNT_dec(PL_checkav);
ece599bd 925 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
926 SvREFCNT_dec(PL_unitcheckav);
927 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 928 SvREFCNT_dec(PL_initav);
7d49f689
NC
929 PL_beginav = NULL;
930 PL_beginav_save = NULL;
931 PL_endav = NULL;
932 PL_checkav = NULL;
933 PL_checkav_save = NULL;
3c10abe3
AG
934 PL_unitcheckav = NULL;
935 PL_unitcheckav_save = NULL;
7d49f689 936 PL_initav = NULL;
5618dfe8 937
8ebc5c01 938 /* shortcuts just get cleared */
a0714e2c
SS
939 PL_envgv = NULL;
940 PL_incgv = NULL;
941 PL_hintgv = NULL;
942 PL_errgv = NULL;
943 PL_argvgv = NULL;
944 PL_argvoutgv = NULL;
945 PL_stdingv = NULL;
946 PL_stderrgv = NULL;
947 PL_last_in_gv = NULL;
948 PL_replgv = NULL;
949 PL_DBgv = NULL;
950 PL_DBline = NULL;
951 PL_DBsub = NULL;
952 PL_DBsingle = NULL;
953 PL_DBtrace = NULL;
954 PL_DBsignal = NULL;
601f1833 955 PL_DBcv = NULL;
7d49f689 956 PL_dbargs = NULL;
5c284bb0 957 PL_debstash = NULL;
8ebc5c01 958
7a1c5554 959 SvREFCNT_dec(PL_argvout_stack);
7d49f689 960 PL_argvout_stack = NULL;
8ebc5c01 961
5c831c24 962 SvREFCNT_dec(PL_modglobal);
5c284bb0 963 PL_modglobal = NULL;
5c831c24 964 SvREFCNT_dec(PL_preambleav);
7d49f689 965 PL_preambleav = NULL;
5c831c24 966 SvREFCNT_dec(PL_subname);
a0714e2c 967 PL_subname = NULL;
ca0c25f6 968#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 969 SvREFCNT_dec(PL_pidstatus);
5c284bb0 970 PL_pidstatus = NULL;
ca0c25f6 971#endif
5c831c24 972 SvREFCNT_dec(PL_toptarget);
a0714e2c 973 PL_toptarget = NULL;
5c831c24 974 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
975 PL_bodytarget = NULL;
976 PL_formtarget = NULL;
5c831c24 977
d33b2eba 978 /* free locale stuff */
b9582b6a 979#ifdef USE_LOCALE_COLLATE
d33b2eba 980 Safefree(PL_collation_name);
bd61b366 981 PL_collation_name = NULL;
b9582b6a 982#endif
d33b2eba 983
b9582b6a 984#ifdef USE_LOCALE_NUMERIC
d33b2eba 985 Safefree(PL_numeric_name);
bd61b366 986 PL_numeric_name = NULL;
a453c169 987 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 988 PL_numeric_radix_sv = NULL;
b9582b6a 989#endif
d33b2eba 990
5c831c24
GS
991 /* clear utf8 character classes */
992 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
993 SvREFCNT_dec(PL_utf8_ascii);
994 SvREFCNT_dec(PL_utf8_alpha);
995 SvREFCNT_dec(PL_utf8_space);
996 SvREFCNT_dec(PL_utf8_cntrl);
997 SvREFCNT_dec(PL_utf8_graph);
998 SvREFCNT_dec(PL_utf8_digit);
999 SvREFCNT_dec(PL_utf8_upper);
1000 SvREFCNT_dec(PL_utf8_lower);
1001 SvREFCNT_dec(PL_utf8_print);
1002 SvREFCNT_dec(PL_utf8_punct);
1003 SvREFCNT_dec(PL_utf8_xdigit);
1004 SvREFCNT_dec(PL_utf8_mark);
1005 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1006 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1007 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1008 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1009 SvREFCNT_dec(PL_utf8_idstart);
1010 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c 1011 PL_utf8_alnum = NULL;
a0714e2c
SS
1012 PL_utf8_ascii = NULL;
1013 PL_utf8_alpha = NULL;
1014 PL_utf8_space = NULL;
1015 PL_utf8_cntrl = NULL;
1016 PL_utf8_graph = NULL;
1017 PL_utf8_digit = NULL;
1018 PL_utf8_upper = NULL;
1019 PL_utf8_lower = NULL;
1020 PL_utf8_print = NULL;
1021 PL_utf8_punct = NULL;
1022 PL_utf8_xdigit = NULL;
1023 PL_utf8_mark = NULL;
1024 PL_utf8_toupper = NULL;
1025 PL_utf8_totitle = NULL;
1026 PL_utf8_tolower = NULL;
1027 PL_utf8_tofold = NULL;
1028 PL_utf8_idstart = NULL;
1029 PL_utf8_idcont = NULL;
5c831c24 1030
971a9dd3 1031 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1032 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1033 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1034 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1035 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1036 CopFILE_free(&PL_compiling);
1037 CopSTASH_free(&PL_compiling);
5c831c24 1038
a0d0e21e 1039 /* Prepare to destruct main symbol table. */
5f05dabc 1040
3280af22
NIS
1041 hv = PL_defstash;
1042 PL_defstash = 0;
a0d0e21e 1043 SvREFCNT_dec(hv);
5c831c24 1044 SvREFCNT_dec(PL_curstname);
a0714e2c 1045 PL_curstname = NULL;
a0d0e21e 1046
5a844595
GS
1047 /* clear queued errors */
1048 SvREFCNT_dec(PL_errors);
a0714e2c 1049 PL_errors = NULL;
5a844595 1050
dd69841b
BB
1051 SvREFCNT_dec(PL_isarev);
1052
a0d0e21e 1053 FREETMPS;
9b387841 1054 if (destruct_level >= 2) {
3280af22 1055 if (PL_scopestack_ix != 0)
9b387841
NC
1056 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1057 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1058 (long)PL_scopestack_ix);
3280af22 1059 if (PL_savestack_ix != 0)
9b387841
NC
1060 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1061 "Unbalanced saves: %ld more saves than restores\n",
1062 (long)PL_savestack_ix);
3280af22 1063 if (PL_tmps_floor != -1)
9b387841
NC
1064 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1065 (long)PL_tmps_floor + 1);
a0d0e21e 1066 if (cxstack_ix != -1)
9b387841
NC
1067 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1068 (long)cxstack_ix + 1);
a0d0e21e 1069 }
8990e307
LW
1070
1071 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1072
1073 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1074 while (sv_clean_all() > 2)
5226ed68
JH
1075 ;
1076
d4777f27
GS
1077 AvREAL_off(PL_fdpid); /* no surviving entries */
1078 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1079 PL_fdpid = NULL;
d33b2eba 1080
6c644e78
GS
1081#ifdef HAVE_INTERP_INTERN
1082 sys_intern_clear();
1083#endif
1084
6e72f9df
PP
1085 /* Destruct the global string table. */
1086 {
1087 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1088 * so that sv_free() won't fail on them.
80459961
NC
1089 * Now that the global string table is using a single hunk of memory
1090 * for both HE and HEK, we either need to explicitly unshare it the
1091 * correct way, or actually free things here.
6e72f9df 1092 */
80459961
NC
1093 I32 riter = 0;
1094 const I32 max = HvMAX(PL_strtab);
c4420975 1095 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1096 HE *hent = array[0];
1097
6e72f9df 1098 for (;;) {
0453d815 1099 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1100 HE * const next = HeNEXT(hent);
9014280d 1101 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1102 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1103 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1104 Safefree(hent);
1105 hent = next;
6e72f9df
PP
1106 }
1107 if (!hent) {
1108 if (++riter > max)
1109 break;
1110 hent = array[riter];
1111 }
1112 }
80459961
NC
1113
1114 Safefree(array);
1115 HvARRAY(PL_strtab) = 0;
1116 HvTOTALKEYS(PL_strtab) = 0;
1117 HvFILL(PL_strtab) = 0;
6e72f9df 1118 }
3280af22 1119 SvREFCNT_dec(PL_strtab);
6e72f9df 1120
e652bb2f 1121#ifdef USE_ITHREADS
c21d1a0f 1122 /* free the pointer tables used for cloning */
a0739874 1123 ptr_table_free(PL_ptr_table);
bf9cdc68 1124 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1125#endif
a0739874 1126
d33b2eba
GS
1127 /* free special SVs */
1128
1129 SvREFCNT(&PL_sv_yes) = 0;
1130 sv_clear(&PL_sv_yes);
1131 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1132 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1133
1134 SvREFCNT(&PL_sv_no) = 0;
1135 sv_clear(&PL_sv_no);
1136 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1137 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1138
9f375a43
DM
1139 {
1140 int i;
1141 for (i=0; i<=2; i++) {
1142 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1143 sv_clear(PERL_DEBUG_PAD(i));
1144 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1145 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1146 }
1147 }
1148
0453d815 1149 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1150 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1151
eba0f806
DM
1152#ifdef DEBUG_LEAKING_SCALARS
1153 if (PL_sv_count != 0) {
1154 SV* sva;
1155 SV* sv;
1156 register SV* svend;
1157
ad64d0ec 1158 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1159 svend = &sva[SvREFCNT(sva)];
1160 for (sv = sva + 1; sv < svend; ++sv) {
1161 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1162 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1163 " flags=0x%"UVxf
fd0854ff
DM
1164 " refcnt=%"UVuf pTHX__FORMAT "\n"
1165 "\tallocated at %s:%d %s %s%s\n",
574b8821
NC
1166 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1167 pTHX__VALUE,
fd0854ff
DM
1168 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1169 sv->sv_debug_line,
1170 sv->sv_debug_inpad ? "for" : "by",
1171 sv->sv_debug_optype ?
1172 PL_op_name[sv->sv_debug_optype]: "(none)",
1173 sv->sv_debug_cloned ? " (cloned)" : ""
1174 );
2aa47728 1175#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1176 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1177#endif
eba0f806
DM
1178 }
1179 }
1180 }
1181 }
2aa47728
NC
1182#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1183 {
1184 int status;
1185 fd_set rset;
1186 /* Wait for up to 4 seconds for child to terminate.
1187 This seems to be the least effort way of timing out on reaping
1188 its exit status. */
1189 struct timeval waitfor = {4, 0};
41e4abd8 1190 int sock = PL_dumper_fd;
2aa47728
NC
1191
1192 shutdown(sock, 1);
1193 FD_ZERO(&rset);
1194 FD_SET(sock, &rset);
1195 select(sock + 1, &rset, NULL, NULL, &waitfor);
1196 waitpid(child, &status, WNOHANG);
1197 close(sock);
1198 }
1199#endif
eba0f806 1200#endif
77abb4c6
NC
1201#ifdef DEBUG_LEAKING_SCALARS_ABORT
1202 if (PL_sv_count)
1203 abort();
1204#endif
bf9cdc68 1205 PL_sv_count = 0;
eba0f806 1206
f1fac472
NC
1207#ifdef PERL_DEBUG_READONLY_OPS
1208 free(PL_slabs);
1209 PL_slabs = NULL;
1210 PL_slab_count = 0;
1211#endif
eba0f806 1212
56a2bab7 1213#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1214 /* No more IO - including error messages ! */
1215 PerlIO_cleanup(aTHX);
1216#endif
1217
9f4bd222 1218 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1219 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1220 for no arg - and will try and SvREFCNT_dec it.
1221 */
1222 SvREFCNT(&PL_sv_undef) = 0;
1223 SvREADONLY_off(&PL_sv_undef);
1224
3280af22 1225 Safefree(PL_origfilename);
bd61b366 1226 PL_origfilename = NULL;
3280af22 1227 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1228 PL_reg_start_tmp = (char**)NULL;
1229 PL_reg_start_tmpl = 0;
43c5f42d 1230 Safefree(PL_reg_curpm);
82ba1be6 1231 Safefree(PL_reg_poscache);
dd28f7bb 1232 free_tied_hv_pool();
3280af22 1233 Safefree(PL_op_mask);
cf36064f 1234 Safefree(PL_psig_name);
bf9cdc68 1235 PL_psig_name = (SV**)NULL;
d525a7b2 1236 PL_psig_ptr = (SV**)NULL;
ce08f86c 1237 Safefree(PL_psig_pend);
bf9cdc68 1238 PL_psig_pend = (int*)NULL;
31c91b43
LR
1239 {
1240 /* We need to NULL PL_psig_pend first, so that
1241 signal handlers know not to use it */
1242 int *psig_save = PL_psig_pend;
1243 PL_psig_pend = (int*)NULL;
1244 Safefree(psig_save);
1245 }
a0714e2c 1246 PL_formfeed = NULL;
6e72f9df 1247 nuke_stacks();
bf9cdc68
RG
1248 PL_tainting = FALSE;
1249 PL_taint_warn = FALSE;
3280af22 1250 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1251 PL_debug = 0;
ac27b0f5 1252
a0d0e21e 1253 DEBUG_P(debprofdump());
d33b2eba 1254
e5dd39fc 1255#ifdef USE_REENTRANT_API
10bc17b6 1256 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1257#endif
1258
612f20c3
GS
1259 sv_free_arenas();
1260
5d9a96ca
DM
1261 while (PL_regmatch_slab) {
1262 regmatch_slab *s = PL_regmatch_slab;
1263 PL_regmatch_slab = PL_regmatch_slab->next;
1264 Safefree(s);
1265 }
1266
fc36a67e
PP
1267 /* As the absolutely last thing, free the non-arena SV for mess() */
1268
3280af22 1269 if (PL_mess_sv) {
f350b448
NC
1270 /* we know that type == SVt_PVMG */
1271
9c63abab 1272 /* it could have accumulated taint magic */
f350b448
NC
1273 MAGIC* mg;
1274 MAGIC* moremagic;
1275 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1276 moremagic = mg->mg_moremagic;
1277 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1278 && mg->mg_len >= 0)
1279 Safefree(mg->mg_ptr);
1280 Safefree(mg);
9c63abab 1281 }
f350b448 1282
fc36a67e 1283 /* we know that type >= SVt_PV */
8bd4d4c5 1284 SvPV_free(PL_mess_sv);
3280af22
NIS
1285 Safefree(SvANY(PL_mess_sv));
1286 Safefree(PL_mess_sv);
a0714e2c 1287 PL_mess_sv = NULL;
fc36a67e 1288 }
37038d91 1289 return STATUS_EXIT;
79072805
LW
1290}
1291
954c1994
GS
1292/*
1293=for apidoc perl_free
1294
1295Releases a Perl interpreter. See L<perlembed>.
1296
1297=cut
1298*/
1299
79072805 1300void
0cb96387 1301perl_free(pTHXx)
79072805 1302{
5174512c
NC
1303 dVAR;
1304
7918f24d
NC
1305 PERL_ARGS_ASSERT_PERL_FREE;
1306
c301d606
DM
1307 if (PL_veto_cleanup)
1308 return;
1309
7cb608b5 1310#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1311 {
1312 /*
1313 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1314 * value as we're probably hunting memory leaks then
1315 */
1316 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1317 if (!s || atoi(s) == 0) {
4fd0a9b8 1318 const U32 old_debug = PL_debug;
55ef9aae
MHM
1319 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1320 thread at thread exit. */
4fd0a9b8
NC
1321 if (DEBUG_m_TEST) {
1322 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1323 "free this thread's memory\n");
1324 PL_debug &= ~ DEBUG_m_FLAG;
1325 }
55ef9aae
MHM
1326 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1327 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1328 PL_debug = old_debug;
55ef9aae
MHM
1329 }
1330 }
7cb608b5
NC
1331#endif
1332
acfe0abc 1333#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1334# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1335 {
acfe0abc 1336# ifdef NETWARE
7af12a34 1337 void *host = nw_internal_host;
acfe0abc 1338# else
7af12a34 1339 void *host = w32_internal_host;
acfe0abc 1340# endif
7af12a34 1341 PerlMem_free(aTHXx);
acfe0abc 1342# ifdef NETWARE
7af12a34 1343 nw_delete_internal_host(host);
acfe0abc 1344# else
7af12a34 1345 win32_delete_internal_host(host);
acfe0abc 1346# endif
7af12a34 1347 }
1c0ca838
GS
1348# else
1349 PerlMem_free(aTHXx);
1350# endif
acfe0abc
GS
1351#else
1352 PerlMem_free(aTHXx);
76e3520e 1353#endif
79072805
LW
1354}
1355
b7f7fff6 1356#if defined(USE_ITHREADS)
aebd1ac7
GA
1357/* provide destructors to clean up the thread key when libperl is unloaded */
1358#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1359
826955bd 1360#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1361#pragma fini "perl_fini"
666ad1ec
GA
1362#elif defined(__sun) && !defined(__GNUC__)
1363#pragma fini (perl_fini)
aebd1ac7
GA
1364#endif
1365
0dbb1585
AL
1366static void
1367#if defined(__GNUC__)
1368__attribute__((destructor))
aebd1ac7 1369#endif
de009b76 1370perl_fini(void)
aebd1ac7 1371{
27da23d5 1372 dVAR;
c301d606 1373 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1374 FREE_THREAD_KEY;
1375}
1376
1377#endif /* WIN32 */
1378#endif /* THREADS */
1379
4b556e6c 1380void
864dbfa3 1381Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1382{
97aff369 1383 dVAR;
3280af22
NIS
1384 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1385 PL_exitlist[PL_exitlistlen].fn = fn;
1386 PL_exitlist[PL_exitlistlen].ptr = ptr;
1387 ++PL_exitlistlen;
4b556e6c
JD
1388}
1389
56cf6df8
RGS
1390#ifdef HAS_PROCSELFEXE
1391/* This is a function so that we don't hold on to MAXPATHLEN
1392 bytes of stack longer than necessary
1393 */
1394STATIC void
e1ec3a88 1395S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1396{
1397 char buf[MAXPATHLEN];
1398 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1399
1400 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1401 includes a spurious NUL which will cause $^X to fail in system
1402 or backticks (this will prevent extensions from being built and
1403 many tests from working). readlink is not meant to add a NUL.
1404 Normal readlink works fine.
1405 */
1406 if (len > 0 && buf[len-1] == '\0') {
1407 len--;
1408 }
1409
1410 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1411 returning the text "unknown" from the readlink rather than the path
1412 to the executable (or returning an error from the readlink). Any valid
1413 path has a '/' in it somewhere, so use that to validate the result.
1414 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1415 */
1416 if (len > 0 && memchr(buf, '/', len)) {
1417 sv_setpvn(sv,buf,len);
1418 }
1419 else {
1420 sv_setpv(sv,arg0);
1421 }
1422}
1423#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1424
1425STATIC void
1426S_set_caret_X(pTHX) {
97aff369 1427 dVAR;
fafc274c 1428 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1429 if (tmpgv) {
1430#ifdef HAS_PROCSELFEXE
1431 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1432#else
1433#ifdef OS2
c69033f2 1434 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1435#else
c69033f2 1436 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1437#endif
1438#endif
1439 }
1440}
1441
954c1994
GS
1442/*
1443=for apidoc perl_parse
1444
1445Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1446
1447=cut
1448*/
1449
79072805 1450int
0cb96387 1451perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1452{
27da23d5 1453 dVAR;
6224f72b 1454 I32 oldscope;
6224f72b 1455 int ret;
db36c5a1 1456 dJMPENV;
8d063cd8 1457
7918f24d
NC
1458 PERL_ARGS_ASSERT_PERL_PARSE;
1459#ifndef MULTIPLICITY
ed6c66dd 1460 PERL_UNUSED_ARG(my_perl);
7918f24d 1461#endif
9d4ba2ae 1462
b0891165
JH
1463#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1464 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1465 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1466 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1467 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1468 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1469 if (!PL_rehash_seed_set)
1470 PL_rehash_seed = get_hash_seed();
b0891165 1471 {
9d4ba2ae 1472 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1473
1b6737cc
AL
1474 if (s && (atoi(s) == 1))
1475 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1476 }
1477#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1478
3280af22 1479 PL_origargc = argc;
e2975953 1480 PL_origargv = argv;
a0d0e21e 1481
a2722ac9
GA
1482 if (PL_origalen != 0) {
1483 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1484 }
1485 else {
3cb9023d
JH
1486 /* Set PL_origalen be the sum of the contiguous argv[]
1487 * elements plus the size of the env in case that it is
e9137a8e 1488 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1489 * as the maximum modifiable length of $0. In the worst case
1490 * the area we are able to modify is limited to the size of
43c32782 1491 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1492 * --jhi */
e1ec3a88 1493 const char *s = NULL;
54bfe034 1494 int i;
1b6737cc 1495 const UV mask =
7d8e7db3 1496 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1497 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1498 const UV aligned =
43c32782
JH
1499 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1500
1501 /* See if all the arguments are contiguous in memory. Note
1502 * that 'contiguous' is a loose term because some platforms
1503 * align the argv[] and the envp[]. If the arguments look
1504 * like non-aligned, assume that they are 'strictly' or
1505 * 'traditionally' contiguous. If the arguments look like
1506 * aligned, we just check that they are within aligned
1507 * PTRSIZE bytes. As long as no system has something bizarre
1508 * like the argv[] interleaved with some other data, we are
1509 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1510 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1511 while (*s) s++;
1512 for (i = 1; i < PL_origargc; i++) {
1513 if ((PL_origargv[i] == s + 1
43c32782 1514#ifdef OS2
c8941eeb 1515 || PL_origargv[i] == s + 2
43c32782 1516#endif
c8941eeb
JH
1517 )
1518 ||
1519 (aligned &&
1520 (PL_origargv[i] > s &&
1521 PL_origargv[i] <=
1522 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1523 )
1524 {
1525 s = PL_origargv[i];
1526 while (*s) s++;
1527 }
1528 else
1529 break;
54bfe034 1530 }
54bfe034 1531 }
a4a109c2
JD
1532
1533#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1534 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1535 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1536 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1537 ||
1538 (aligned &&
1539 (PL_origenviron[0] > s &&
1540 PL_origenviron[0] <=
1541 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1542 )
1543 {
9d419b5f 1544#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1545 s = PL_origenviron[0];
1546 while (*s) s++;
1547#endif
bd61b366 1548 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1549 /* Force copy of environment. */
1550 for (i = 1; PL_origenviron[i]; i++) {
1551 if (PL_origenviron[i] == s + 1
1552 ||
1553 (aligned &&
1554 (PL_origenviron[i] > s &&
1555 PL_origenviron[i] <=
1556 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1557 )
1558 {
1559 s = PL_origenviron[i];
1560 while (*s) s++;
1561 }
1562 else
1563 break;
54bfe034 1564 }
43c32782 1565 }
54bfe034 1566 }
a4a109c2
JD
1567#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1568
2d2af554 1569 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1570 }
1571
3280af22 1572 if (PL_do_undump) {
a0d0e21e
LW
1573
1574 /* Come here if running an undumped a.out. */
1575
3280af22
NIS
1576 PL_origfilename = savepv(argv[0]);
1577 PL_do_undump = FALSE;
a0d0e21e 1578 cxstack_ix = -1; /* start label stack again */
748a9306 1579 init_ids();
b7975bdd
NC
1580 assert (!PL_tainted);
1581 TAINT;
1582 S_set_caret_X(aTHX);
1583 TAINT_NOT;
a0d0e21e
LW
1584 init_postdump_symbols(argc,argv,env);
1585 return 0;
1586 }
1587
3280af22 1588 if (PL_main_root) {
3280af22 1589 op_free(PL_main_root);
5f66b61c 1590 PL_main_root = NULL;
ff0cee69 1591 }
5f66b61c 1592 PL_main_start = NULL;
3280af22 1593 SvREFCNT_dec(PL_main_cv);
601f1833 1594 PL_main_cv = NULL;
79072805 1595
3280af22
NIS
1596 time(&PL_basetime);
1597 oldscope = PL_scopestack_ix;
599cee73 1598 PL_dowarn = G_WARN_OFF;
f86702cc 1599
14dd3ad8 1600 JMPENV_PUSH(ret);
6224f72b 1601 switch (ret) {
312caa8e 1602 case 0:
14dd3ad8 1603 parse_body(env,xsinit);
3c10abe3
AG
1604 if (PL_unitcheckav)
1605 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1606 if (PL_checkav)
1607 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1608 ret = 0;
1609 break;
6224f72b
GS
1610 case 1:
1611 STATUS_ALL_FAILURE;
1612 /* FALL THROUGH */
1613 case 2:
1614 /* my_exit() was called */
3280af22 1615 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1616 LEAVE;
1617 FREETMPS;
3280af22 1618 PL_curstash = PL_defstash;
3c10abe3
AG
1619 if (PL_unitcheckav)
1620 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1621 if (PL_checkav)
1622 call_list(oldscope, PL_checkav);
37038d91 1623 ret = STATUS_EXIT;
14dd3ad8 1624 break;
6224f72b 1625 case 3:
bf49b057 1626 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1627 ret = 1;
1628 break;
6224f72b 1629 }
14dd3ad8
GS
1630 JMPENV_POP;
1631 return ret;
1632}
1633
4a5df386
NC
1634/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1635 miniperl, and we need to see those flags reflected in the values here. */
1636
1637/* What this returns is subject to change. Use the public interface in Config.
1638 */
1639static void
1640S_Internals_V(pTHX_ CV *cv)
1641{
1642 dXSARGS;
1643#ifdef LOCAL_PATCH_COUNT
1644 const int local_patch_count = LOCAL_PATCH_COUNT;
1645#else
1646 const int local_patch_count = 0;
1647#endif
2dc296d2 1648 const int entries = 3 + local_patch_count;
4a5df386
NC
1649 int i;
1650 static char non_bincompat_options[] =
1651# ifdef DEBUGGING
1652 " DEBUGGING"
1653# endif
1654# ifdef NO_MATHOMS
1655 " NO_MATHOMS"
1656# endif
1657# ifdef PERL_DISABLE_PMC
1658 " PERL_DISABLE_PMC"
1659# endif
1660# ifdef PERL_DONT_CREATE_GVSV
1661 " PERL_DONT_CREATE_GVSV"
1662# endif
1663# ifdef PERL_IS_MINIPERL
1664 " PERL_IS_MINIPERL"
1665# endif
1666# ifdef PERL_MALLOC_WRAP
1667 " PERL_MALLOC_WRAP"
1668# endif
1669# ifdef PERL_MEM_LOG
1670 " PERL_MEM_LOG"
1671# endif
1672# ifdef PERL_MEM_LOG_NOIMPL
1673 " PERL_MEM_LOG_NOIMPL"
1674# endif
1675# ifdef PERL_USE_DEVEL
1676 " PERL_USE_DEVEL"
1677# endif
1678# ifdef PERL_USE_SAFE_PUTENV
1679 " PERL_USE_SAFE_PUTENV"
1680# endif
1681# ifdef USE_SITECUSTOMIZE
1682 " USE_SITECUSTOMIZE"
1683# endif
1684# ifdef USE_FAST_STDIO
1685 " USE_FAST_STDIO"
1686# endif
1687 ;
1688 PERL_UNUSED_ARG(cv);
1689 PERL_UNUSED_ARG(items);
1690
1691 EXTEND(SP, entries);
1692
1693 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1694 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1695 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1696
1697#ifdef __DATE__
1698# ifdef __TIME__
1699 PUSHs(Perl_newSVpvn_flags(aTHX_
1700 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1701 SVs_TEMP));
1702# else
1703 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1704 SVs_TEMP));
1705# endif
1706#else
1707 PUSHs(&PL_sv_undef);
1708#endif
1709
4a5df386
NC
1710 for (i = 1; i <= local_patch_count; i++) {
1711 /* This will be an undef, if PL_localpatches[i] is NULL. */
1712 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1713 }
1714
1715 XSRETURN(entries);
1716}
1717
be71fc8f
NC
1718#define INCPUSH_UNSHIFT 0x01
1719#define INCPUSH_ADD_OLD_VERS 0x02
1720#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1721#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1722#define INCPUSH_NOT_BASEDIR 0x10
1723#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1724#define INCPUSH_ADD_SUB_DIRS \
1725 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1726
312caa8e 1727STATIC void *
14dd3ad8 1728S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1729{
27da23d5 1730 dVAR;
2f9285f8 1731 PerlIO *rsfp;
312caa8e 1732 int argc = PL_origargc;
8f42b153 1733 char **argv = PL_origargv;
e1ec3a88 1734 const char *scriptname = NULL;
312caa8e 1735 VOL bool dosearch = FALSE;
c7030b81 1736 register char c;
bd61b366 1737 const char *cddir = NULL;
ab019eaa 1738#ifdef USE_SITECUSTOMIZE
20ef40cf 1739 bool minus_f = FALSE;
ab019eaa 1740#endif
009d90df 1741 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1742 bool add_read_e_script = FALSE;
009d90df
DM
1743
1744 SvGROW(linestr_sv, 80);
76f68e9b 1745 sv_setpvs(linestr_sv,"");
312caa8e 1746
6224f72b 1747 init_main_stash();
54310121 1748
c7030b81
NC
1749 {
1750 const char *s;
6224f72b
GS
1751 for (argc--,argv++; argc > 0; argc--,argv++) {
1752 if (argv[0][0] != '-' || !argv[0][1])
1753 break;
6224f72b
GS
1754 s = argv[0]+1;
1755 reswitch:
47f56822 1756 switch ((c = *s)) {
729a02f2 1757 case 'C':
1d5472a9
GS
1758#ifndef PERL_STRICT_CR
1759 case '\r':
1760#endif
6224f72b
GS
1761 case ' ':
1762 case '0':
1763 case 'F':
1764 case 'a':
1765 case 'c':
1766 case 'd':
1767 case 'D':
1768 case 'h':
1769 case 'i':
1770 case 'l':
1771 case 'M':
1772 case 'm':
1773 case 'n':
1774 case 'p':
1775 case 's':
1776 case 'u':
1777 case 'U':
1778 case 'v':
599cee73
PM
1779 case 'W':
1780 case 'X':
6224f72b 1781 case 'w':
97bd5664 1782 if ((s = moreswitches(s)))
6224f72b
GS
1783 goto reswitch;
1784 break;
33b78306 1785
1dbad523 1786 case 't':
22f7c9c9 1787 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1788 if( !PL_tainting ) {
1789 PL_taint_warn = TRUE;
1790 PL_tainting = TRUE;
1791 }
1792 s++;
1793 goto reswitch;
6224f72b 1794 case 'T':
22f7c9c9 1795 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1796 PL_tainting = TRUE;
317ea90d 1797 PL_taint_warn = FALSE;
6224f72b
GS
1798 s++;
1799 goto reswitch;
f86702cc 1800
bc9b29db
RH
1801 case 'E':
1802 PL_minus_E = TRUE;
1803 /* FALL THROUGH */
6224f72b 1804 case 'e':
f20b2998 1805 forbid_setid('e', FALSE);
3280af22 1806 if (!PL_e_script) {
396482e1 1807 PL_e_script = newSVpvs("");
5486870f 1808 add_read_e_script = TRUE;
6224f72b
GS
1809 }
1810 if (*++s)
3280af22 1811 sv_catpv(PL_e_script, s);
6224f72b 1812 else if (argv[1]) {
3280af22 1813 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1814 argc--,argv++;
1815 }
1816 else
47f56822 1817 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1818 sv_catpvs(PL_e_script, "\n");
6224f72b 1819 break;
afe37c7d 1820
20ef40cf 1821 case 'f':
f5542d3a 1822#ifdef USE_SITECUSTOMIZE
20ef40cf 1823 minus_f = TRUE;
f5542d3a 1824#endif
20ef40cf
GA
1825 s++;
1826 goto reswitch;
1827
6224f72b 1828 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1829 forbid_setid('I', FALSE);
bd61b366 1830 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1831 argc--,argv++;
1832 }
6224f72b 1833 if (s && *s) {
0df16ed7 1834 STRLEN len = strlen(s);
55b4bc1c 1835 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1836 }
1837 else
a67e862a 1838 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1839 break;
6224f72b 1840 case 'S':
f20b2998 1841 forbid_setid('S', FALSE);
6224f72b
GS
1842 dosearch = TRUE;
1843 s++;
1844 goto reswitch;
1845 case 'V':
7edfd0ef
NC
1846 {
1847 SV *opts_prog;
1848
7edfd0ef 1849 if (*++s != ':') {
37ca4a5b 1850 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1851 }
1852 else {
1853 ++s;
1854 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1855 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1856 0, s, 0);
1857 s += strlen(s);
1858 }
37ca4a5b 1859 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1860 /* don't look for script or read stdin */
1861 scriptname = BIT_BUCKET;
1862 goto reswitch;
6224f72b 1863 }
6224f72b 1864 case 'x':
3280af22 1865 PL_doextract = TRUE;
6224f72b 1866 s++;
304334da 1867 if (*s)
f4c556ac 1868 cddir = s;
6224f72b
GS
1869 break;
1870 case 0:
1871 break;
1872 case '-':
1873 if (!*++s || isSPACE(*s)) {
1874 argc--,argv++;
1875 goto switch_end;
1876 }
1877 /* catch use of gnu style long options */
1878 if (strEQ(s, "version")) {
dd374669 1879 s = (char *)"v";
6224f72b
GS
1880 goto reswitch;
1881 }
1882 if (strEQ(s, "help")) {
dd374669 1883 s = (char *)"h";
6224f72b
GS
1884 goto reswitch;
1885 }
1886 s--;
1887 /* FALL THROUGH */
1888 default:
cea2e8a9 1889 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1890 }
1891 }
c7030b81
NC
1892 }
1893
6224f72b 1894 switch_end:
54310121 1895
c7030b81
NC
1896 {
1897 char *s;
1898
f675dbe5
CB
1899 if (
1900#ifndef SECURE_INTERNAL_GETENV
1901 !PL_tainting &&
1902#endif
cf756827 1903 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1904 {
74288ac8
GS
1905 while (isSPACE(*s))
1906 s++;
317ea90d 1907 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1908 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1909 PL_tainting = TRUE;
317ea90d
MS
1910 PL_taint_warn = FALSE;
1911 }
74288ac8 1912 else {
bd61b366 1913 char *popt_copy = NULL;
74288ac8 1914 while (s && *s) {
54913509 1915 const char *d;
74288ac8
GS
1916 while (isSPACE(*s))
1917 s++;
1918 if (*s == '-') {
1919 s++;
1920 if (isSPACE(*s))
1921 continue;
1922 }
4ea8f8fb 1923 d = s;
74288ac8
GS
1924 if (!*s)
1925 break;
2b622f1a 1926 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1927 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1928 while (++s && *s) {
1929 if (isSPACE(*s)) {
cf756827 1930 if (!popt_copy) {
bfa6c418
NC
1931 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1932 s = popt_copy + (s - d);
1933 d = popt_copy;
cf756827 1934 }
4ea8f8fb
MS
1935 *s++ = '\0';
1936 break;
1937 }
1938 }
1c4db469 1939 if (*d == 't') {
317ea90d
MS
1940 if( !PL_tainting ) {
1941 PL_taint_warn = TRUE;
1942 PL_tainting = TRUE;
1943 }
1c4db469 1944 } else {
97bd5664 1945 moreswitches(d);
1c4db469 1946 }
6224f72b 1947 }
6224f72b
GS
1948 }
1949 }
c7030b81 1950 }
a0d0e21e 1951
87e06404 1952#if defined(USE_SITECUSTOMIZE) && !defined(PERL_IS_MINIPERL)
20ef40cf 1953 if (!minus_f) {
404ad9dc
NC
1954 /* SITELIB_EXP is a function call on Win32.
1955 The games with local $! are to avoid setting errno if there is no
1956 sitecustomize script. */
1957 const char *const sitelib = SITELIB_EXP;
29a861e7 1958 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1959 Perl_newSVpvf(aTHX_
1960 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
20ef40cf
GA
1961 }
1962#endif
1963
6224f72b
GS
1964 if (!scriptname)
1965 scriptname = argv[0];
3280af22 1966 if (PL_e_script) {
6224f72b
GS
1967 argc++,argv--;
1968 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1969 }
bd61b366 1970 else if (scriptname == NULL) {
6224f72b
GS
1971#ifdef MSDOS
1972 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1973 moreswitches("h");
6224f72b
GS
1974#endif
1975 scriptname = "-";
1976 }
1977
b7975bdd
NC
1978 /* Set $^X early so that it can be used for relocatable paths in @INC */
1979 assert (!PL_tainted);
1980 TAINT;
1981 S_set_caret_X(aTHX);
1982 TAINT_NOT;
2cace6ac 1983 init_perllib();
6224f72b 1984
a52eba0e 1985 {
f20b2998 1986 bool suidscript = FALSE;
829372d3 1987
cc69b689 1988 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 1989
2f9285f8 1990 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 1991 linestr_sv, rsfp);
6224f72b 1992
64ca3a65 1993#ifndef PERL_MICRO
a52eba0e
NC
1994# if defined(SIGCHLD) || defined(SIGCLD)
1995 {
1996# ifndef SIGCHLD
1997# define SIGCHLD SIGCLD
1998# endif
1999 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2000 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2001 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2002 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2003 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2004 }
0b5b802d 2005 }
a52eba0e 2006# endif
64ca3a65 2007#endif
0b5b802d 2008
e37778c2 2009 if (PL_doextract) {
faef540c 2010
f20b2998 2011 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2012 setuid scripts. */
2013 forbid_setid('x', suidscript);
f20b2998 2014 /* Hence you can't get here if suidscript is true */
faef540c 2015
2f9285f8 2016 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2017 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2018 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2019 }
f4c556ac 2020 }
6224f72b 2021
ea726b52 2022 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2023 CvUNIQUE_on(PL_compcv);
2024
dd2155a4 2025 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2026
dd69841b
BB
2027 PL_isarev = newHV();
2028
0c4f7ff0 2029 boot_core_PerlIO();
6224f72b 2030 boot_core_UNIVERSAL();
e1a479c5 2031 boot_core_mro();
4a5df386 2032 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2033
2034 if (xsinit)
acfe0abc 2035 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2036#ifndef PERL_MICRO
d0d72822 2037#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2038 init_os_extras();
6224f72b 2039#endif
64ca3a65 2040#endif
6224f72b 2041
29209bc5 2042#ifdef USE_SOCKS
1b9c9cf5
DH
2043# ifdef HAS_SOCKS5_INIT
2044 socks5_init(argv[0]);
2045# else
29209bc5 2046 SOCKSinit(argv[0]);
1b9c9cf5 2047# endif
ac27b0f5 2048#endif
29209bc5 2049
6224f72b
GS
2050 init_predump_symbols();
2051 /* init_postdump_symbols not currently designed to be called */
2052 /* more than once (ENV isn't cleared first, for example) */
2053 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2054 if (!PL_do_undump)
6224f72b
GS
2055 init_postdump_symbols(argc,argv,env);
2056
27da23d5
JH
2057 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2058 * or explicitly in some platforms.
085a54d9 2059 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2060 * look like the user wants to use UTF-8. */
a0fd4948 2061#if defined(__SYMBIAN32__)
27da23d5
JH
2062 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2063#endif
e27b5b51 2064# ifndef PERL_IS_MINIPERL
06e66572
JH
2065 if (PL_unicode) {
2066 /* Requires init_predump_symbols(). */
a05d7ebb 2067 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2068 IO* io;
2069 PerlIO* fp;
2070 SV* sv;
2071
a05d7ebb 2072 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2073 * and the default open disciplines. */
a05d7ebb
JH
2074 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2075 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2076 (fp = IoIFP(io)))
2077 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2078 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2079 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2080 (fp = IoOFP(io)))
2081 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2082 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2083 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2084 (fp = IoOFP(io)))
2085 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2086 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2087 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2088 SVt_PV)))) {
a05d7ebb
JH
2089 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2090 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2091 if (in) {
2092 if (out)
76f68e9b 2093 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2094 else
76f68e9b 2095 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2096 }
2097 else if (out)
76f68e9b 2098 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2099 SvSETMAGIC(sv);
2100 }
b310b053
JH
2101 }
2102 }
e27b5b51 2103#endif
b310b053 2104
c7030b81
NC
2105 {
2106 const char *s;
4ffa73a3
JH
2107 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2108 if (strEQ(s, "unsafe"))
2109 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2110 else if (strEQ(s, "safe"))
2111 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2112 else
2113 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2114 }
c7030b81 2115 }
4ffa73a3 2116
81d86705 2117#ifdef PERL_MAD
c7030b81
NC
2118 {
2119 const char *s;
81d86705
NC
2120 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2121 PL_madskills = 1;
2122 PL_minus_c = 1;
2123 if (!s || !s[0])
2124 PL_xmlfp = PerlIO_stdout();
2125 else {
2126 PL_xmlfp = PerlIO_open(s, "w");
2127 if (!PL_xmlfp)
2128 Perl_croak(aTHX_ "Can't open %s", s);
2129 }
1a9a51d4 2130 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2131 }
c7030b81
NC
2132 }
2133
2134 {
2135 const char *s;
81d86705
NC
2136 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2137 PL_madskills = atoi(s);
1a9a51d4 2138 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2139 }
c7030b81 2140 }
81d86705
NC
2141#endif
2142
5486870f 2143 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2144 PL_subname = newSVpvs("main");
6224f72b 2145
5486870f
DM
2146 if (add_read_e_script)
2147 filter_add(read_e_script, NULL);
2148
6224f72b
GS
2149 /* now parse the script */
2150
93189314 2151 SETERRNO(0,SS_NORMAL);
13765c85 2152 if (yyparse() || PL_parser->error_count) {
3280af22 2153 if (PL_minus_c)
cea2e8a9 2154 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2155 else {
cea2e8a9 2156 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2157 PL_origfilename);
6224f72b
GS
2158 }
2159 }
57843af0 2160 CopLINE_set(PL_curcop, 0);
3280af22 2161 PL_curstash = PL_defstash;
3280af22
NIS
2162 if (PL_e_script) {
2163 SvREFCNT_dec(PL_e_script);
a0714e2c 2164 PL_e_script = NULL;
6224f72b
GS
2165 }
2166
3280af22 2167 if (PL_do_undump)
6224f72b
GS
2168 my_unexec();
2169
57843af0
GS
2170 if (isWARN_ONCE) {
2171 SAVECOPFILE(PL_curcop);
2172 SAVECOPLINE(PL_curcop);
3280af22 2173 gv_check(PL_defstash);
57843af0 2174 }
6224f72b
GS
2175
2176 LEAVE;
2177 FREETMPS;
2178
2179#ifdef MYMALLOC
f6a607bc
RGS
2180 {
2181 const char *s;
6224f72b
GS
2182 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2183 dump_mstats("after compilation:");
f6a607bc 2184 }
6224f72b
GS
2185#endif
2186
2187 ENTER;
3280af22 2188 PL_restartop = 0;
312caa8e 2189 return NULL;
6224f72b
GS
2190}
2191
954c1994
GS
2192/*
2193=for apidoc perl_run
2194
2195Tells a Perl interpreter to run. See L<perlembed>.
2196
2197=cut
2198*/
2199
6224f72b 2200int
0cb96387 2201perl_run(pTHXx)
6224f72b 2202{
97aff369 2203 dVAR;
6224f72b 2204 I32 oldscope;
14dd3ad8 2205 int ret = 0;
db36c5a1 2206 dJMPENV;
6224f72b 2207
7918f24d
NC
2208 PERL_ARGS_ASSERT_PERL_RUN;
2209#ifndef MULTIPLICITY
ed6c66dd 2210 PERL_UNUSED_ARG(my_perl);
7918f24d 2211#endif
9d4ba2ae 2212
3280af22 2213 oldscope = PL_scopestack_ix;
96e176bf
CL
2214#ifdef VMS
2215 VMSISH_HUSHED = 0;
2216#endif
6224f72b 2217
14dd3ad8 2218 JMPENV_PUSH(ret);
6224f72b
GS
2219 switch (ret) {
2220 case 1:
2221 cxstack_ix = -1; /* start context stack again */
312caa8e 2222 goto redo_body;
14dd3ad8 2223 case 0: /* normal completion */
14dd3ad8
GS
2224 redo_body:
2225 run_body(oldscope);
14dd3ad8
GS
2226 /* FALL THROUGH */
2227 case 2: /* my_exit() */
3280af22 2228 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2229 LEAVE;
2230 FREETMPS;
3280af22 2231 PL_curstash = PL_defstash;
3a1ee7e8 2232 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2233 PL_endav && !PL_minus_c)
2234 call_list(oldscope, PL_endav);
6224f72b
GS
2235#ifdef MYMALLOC
2236 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2237 dump_mstats("after execution: ");
2238#endif
37038d91 2239 ret = STATUS_EXIT;
14dd3ad8 2240 break;
6224f72b 2241 case 3:
312caa8e
CS
2242 if (PL_restartop) {
2243 POPSTACK_TO(PL_mainstack);
2244 goto redo_body;
6224f72b 2245 }
bf49b057 2246 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2247 FREETMPS;
14dd3ad8
GS
2248 ret = 1;
2249 break;
6224f72b
GS
2250 }
2251
14dd3ad8
GS
2252 JMPENV_POP;
2253 return ret;
312caa8e
CS
2254}
2255
dd374669 2256STATIC void
14dd3ad8
GS
2257S_run_body(pTHX_ I32 oldscope)
2258{
97aff369 2259 dVAR;
6224f72b 2260 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2261 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2262
3280af22 2263 if (!PL_restartop) {
81d86705
NC
2264#ifdef PERL_MAD
2265 if (PL_xmlfp) {
2266 xmldump_all();
2267 exit(0); /* less likely to core dump than my_exit(0) */
2268 }
2269#endif
cf2782cd 2270#ifdef DEBUGGING
f0e3f042
CS
2271 if (DEBUG_x_TEST || DEBUG_B_TEST)
2272 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2273 if (!DEBUG_q_TEST)
2274 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2275#endif
6224f72b 2276
3280af22 2277 if (PL_minus_c) {
bf49b057 2278 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2279 my_exit(0);
2280 }
3280af22 2281 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2282 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2283 if (PL_initav)
2284 call_list(oldscope, PL_initav);
f1fac472
NC
2285#ifdef PERL_DEBUG_READONLY_OPS
2286 Perl_pending_Slabs_to_ro(aTHX);
2287#endif
6224f72b
GS
2288 }
2289
2290 /* do it */
2291
3280af22 2292 if (PL_restartop) {
533c011a 2293 PL_op = PL_restartop;
3280af22 2294 PL_restartop = 0;
cea2e8a9 2295 CALLRUNOPS(aTHX);
6224f72b 2296 }
3280af22
NIS
2297 else if (PL_main_start) {
2298 CvDEPTH(PL_main_cv) = 1;
533c011a 2299 PL_op = PL_main_start;
cea2e8a9 2300 CALLRUNOPS(aTHX);
6224f72b 2301 }
f6b3007c
JH
2302 my_exit(0);
2303 /* NOTREACHED */
6224f72b
GS
2304}
2305
954c1994 2306/*
ccfc67b7
JH
2307=head1 SV Manipulation Functions
2308
954c1994
GS
2309=for apidoc p||get_sv
2310
64ace3f8
NC
2311Returns the SV of the specified Perl scalar. C<flags> are passed to
2312C<gv_fetchpv>. If C<GV_ADD> is set and the
2313Perl variable does not exist then it will be created. If C<flags> is zero
2314and the variable does not exist then NULL is returned.
954c1994
GS
2315
2316=cut
2317*/
2318
6224f72b 2319SV*
64ace3f8 2320Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2321{
2322 GV *gv;
7918f24d
NC
2323
2324 PERL_ARGS_ASSERT_GET_SV;
2325
64ace3f8 2326 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2327 if (gv)
2328 return GvSV(gv);
a0714e2c 2329 return NULL;
6224f72b
GS
2330}
2331
954c1994 2332/*
ccfc67b7
JH
2333=head1 Array Manipulation Functions
2334
954c1994
GS
2335=for apidoc p||get_av
2336
cbfd0a87
NC
2337Returns the AV of the specified Perl array. C<flags> are passed to
2338C<gv_fetchpv>. If C<GV_ADD> is set and the
2339Perl variable does not exist then it will be created. If C<flags> is zero
2340and the variable does not exist then NULL is returned.
954c1994
GS
2341
2342=cut
2343*/
2344
6224f72b 2345AV*
cbfd0a87 2346Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2347{
cbfd0a87 2348 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2349
2350 PERL_ARGS_ASSERT_GET_AV;
2351
cbfd0a87 2352 if (flags)
6224f72b
GS
2353 return GvAVn(gv);
2354 if (gv)
2355 return GvAV(gv);
7d49f689 2356 return NULL;
6224f72b
GS
2357}
2358
954c1994 2359/*
ccfc67b7
JH
2360=head1 Hash Manipulation Functions
2361
954c1994
GS
2362=for apidoc p||get_hv
2363
6673a63c
NC
2364Returns the HV of the specified Perl hash. C<flags> are passed to
2365C<gv_fetchpv>. If C<GV_ADD> is set and the
2366Perl variable does not exist then it will be created. If C<flags> is zero
2367and the variable does not exist then NULL is returned.
954c1994
GS
2368
2369=cut
2370*/
2371
6224f72b 2372HV*
6673a63c 2373Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2374{
6673a63c 2375 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2376
2377 PERL_ARGS_ASSERT_GET_HV;
2378
6673a63c 2379 if (flags)
a0d0e21e
LW
2380 return GvHVn(gv);
2381 if (gv)
2382 return GvHV(gv);
5c284bb0 2383 return NULL;
a0d0e21e
LW
2384}
2385
954c1994 2386/*
ccfc67b7
JH
2387=head1 CV Manipulation Functions
2388
780a5241
NC
2389=for apidoc p||get_cvn_flags
2390
2391Returns the CV of the specified Perl subroutine. C<flags> are passed to
2392C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2393exist then it will be declared (which has the same effect as saying
2394C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2395then NULL is returned.
2396
954c1994
GS
2397=for apidoc p||get_cv
2398
780a5241 2399Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2400
2401=cut
2402*/
2403
a0d0e21e 2404CV*
780a5241 2405Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2406{
780a5241 2407 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2408 /* XXX this is probably not what they think they're getting.
2409 * It has the same effect as "sub name;", i.e. just a forward
2410 * declaration! */
7918f24d
NC
2411
2412 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2413
780a5241 2414 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2415 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2416 return newSUB(start_subparse(FALSE, 0),
780a5241 2417 newSVOP(OP_CONST, 0, sv),
5f66b61c 2418 NULL, NULL);
780a5241 2419 }
a0d0e21e 2420 if (gv)
8ebc5c01 2421 return GvCVu(gv);
601f1833 2422 return NULL;
a0d0e21e
LW
2423}
2424
2c67934f
NC
2425/* Nothing in core calls this now, but we can't replace it with a macro and
2426 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2427CV*
2428Perl_get_cv(pTHX_ const char *name, I32 flags)
2429{
7918f24d
NC
2430 PERL_ARGS_ASSERT_GET_CV;
2431
780a5241
NC
2432 return get_cvn_flags(name, strlen(name), flags);
2433}
2434
79072805
LW
2435/* Be sure to refetch the stack pointer after calling these routines. */
2436
954c1994 2437/*
ccfc67b7
JH
2438
2439=head1 Callback Functions
2440
954c1994
GS
2441=for apidoc p||call_argv
2442
2443Performs a callback to the specified Perl sub. See L<perlcall>.
2444
2445=cut
2446*/
2447
a0d0e21e 2448I32
8f42b153 2449Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2450
8ac85365
NIS
2451 /* See G_* flags in cop.h */
2452 /* null terminated arg list */
8990e307 2453{
97aff369 2454 dVAR;
a0d0e21e 2455 dSP;
8990e307 2456
7918f24d
NC
2457 PERL_ARGS_ASSERT_CALL_ARGV;
2458
924508f0 2459 PUSHMARK(SP);
a0d0e21e 2460 if (argv) {
8990e307 2461 while (*argv) {
6e449a3a 2462 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2463 argv++;
2464 }
a0d0e21e 2465 PUTBACK;
8990e307 2466 }
864dbfa3 2467 return call_pv(sub_name, flags);
8990e307
LW
2468}
2469
954c1994
GS
2470/*
2471=for apidoc p||call_pv
2472
2473Performs a callback to the specified Perl sub. See L<perlcall>.
2474
2475=cut
2476*/
2477
a0d0e21e 2478I32
864dbfa3 2479Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2480 /* name of the subroutine */
2481 /* See G_* flags in cop.h */
a0d0e21e 2482{
7918f24d
NC
2483 PERL_ARGS_ASSERT_CALL_PV;
2484
0da0e728 2485 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2486}
2487
954c1994
GS
2488/*
2489=for apidoc p||call_method
2490
2491Performs a callback to the specified Perl method. The blessed object must
2492be on the stack. See L<perlcall>.
2493
2494=cut
2495*/
2496
a0d0e21e 2497I32
864dbfa3 2498Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2499 /* name of the subroutine */
2500 /* See G_* flags in cop.h */
a0d0e21e 2501{
46ca9bac 2502 STRLEN len;
7918f24d
NC
2503 PERL_ARGS_ASSERT_CALL_METHOD;
2504
46ca9bac 2505 len = strlen(methname);
2506
2507 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2508 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2509}
2510
2511/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2512/*
2513=for apidoc p||call_sv
2514
2515Performs a callback to the Perl sub whose name is in the SV. See
2516L<perlcall>.
2517
2518=cut
2519*/
2520
a0d0e21e 2521I32
001d637e 2522Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2523 /* See G_* flags in cop.h */
a0d0e21e 2524{
27da23d5 2525 dVAR; dSP;
a0d0e21e 2526 LOGOP myop; /* fake syntax tree node */
968b3946 2527 UNOP method_op;
aa689395 2528 I32 oldmark;
8ea43dc8 2529 VOL I32 retval = 0;
a0d0e21e 2530 I32 oldscope;
54310121 2531 bool oldcatch = CATCH_GET;
6224f72b 2532 int ret;
c4420975 2533 OP* const oldop = PL_op;
db36c5a1 2534 dJMPENV;
1e422769 2535
7918f24d
NC
2536 PERL_ARGS_ASSERT_CALL_SV;
2537
a0d0e21e
LW
2538 if (flags & G_DISCARD) {
2539 ENTER;
2540 SAVETMPS;
2541 }
2f8edad0
NC
2542 if (!(flags & G_WANT)) {
2543 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2544 */
2545 flags |= G_SCALAR;
2546 }
a0d0e21e 2547
aa689395 2548 Zero(&myop, 1, LOGOP);
5f66b61c 2549 myop.op_next = NULL;
f51d4af5 2550 if (!(flags & G_NOARGS))
aa689395 2551 myop.op_flags |= OPf_STACKED;
4f911530 2552 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2553 SAVEOP();
533c011a 2554 PL_op = (OP*)&myop;
aa689395 2555
3280af22
NIS
2556 EXTEND(PL_stack_sp, 1);
2557 *++PL_stack_sp = sv;
aa689395 2558 oldmark = TOPMARK;
3280af22 2559 oldscope = PL_scopestack_ix;
a0d0e21e 2560
3280af22 2561 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2562 /* Handle first BEGIN of -d. */
3280af22 2563 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2564 /* Try harder, since this may have been a sighandler, thus
2565 * curstash may be meaningless. */
ea726b52 2566 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2567 && !(flags & G_NODEBUG))
533c011a 2568 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2569
968b3946
GS
2570 if (flags & G_METHOD) {
2571 Zero(&method_op, 1, UNOP);
2572 method_op.op_next = PL_op;
2573 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2574 method_op.op_type = OP_METHOD;
968b3946 2575 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2576 myop.op_type = OP_ENTERSUB;
f39d0b86 2577 PL_op = (OP*)&method_op;
968b3946
GS
2578 }
2579
312caa8e 2580 if (!(flags & G_EVAL)) {
0cdb2077 2581 CATCH_SET(TRUE);
d6f07c05 2582 CALL_BODY_SUB((OP*)&myop);
312caa8e 2583 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2584 CATCH_SET(oldcatch);
312caa8e
CS
2585 }
2586 else {
d78bda3d 2587 myop.op_other = (OP*)&myop;
3280af22 2588 PL_markstack_ptr--;
edb2152a 2589 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2590 PL_markstack_ptr++;
a0d0e21e 2591
14dd3ad8 2592 JMPENV_PUSH(ret);
edb2152a 2593
6224f72b
GS
2594 switch (ret) {
2595 case 0:
14dd3ad8 2596 redo_body:
d6f07c05 2597 CALL_BODY_SUB((OP*)&myop);
312caa8e 2598 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2599 if (!(flags & G_KEEPERR)) {
ab69dbc2 2600 CLEAR_ERRSV();
8433848b 2601 }
a0d0e21e 2602 break;
6224f72b 2603 case 1:
f86702cc 2604 STATUS_ALL_FAILURE;
a0d0e21e 2605 /* FALL THROUGH */
6224f72b 2606 case 2:
a0d0e21e 2607 /* my_exit() was called */
3280af22 2608 PL_curstash = PL_defstash;
a0d0e21e 2609 FREETMPS;
14dd3ad8 2610 JMPENV_POP;
f86702cc 2611 my_exit_jump();
a0d0e21e 2612 /* NOTREACHED */
6224f72b 2613 case 3:
3280af22 2614 if (PL_restartop) {
533c011a 2615 PL_op = PL_restartop;
3280af22 2616 PL_restartop = 0;
312caa8e 2617 goto redo_body;
a0d0e21e 2618 }
3280af22 2619 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2620 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2621 retval = 0;
2622 else {
2623 retval = 1;
3280af22 2624 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2625 }
312caa8e 2626 break;
a0d0e21e 2627 }
a0d0e21e 2628
edb2152a
NC
2629 if (PL_scopestack_ix > oldscope)
2630 delete_eval_scope();
14dd3ad8 2631 JMPENV_POP;
a0d0e21e 2632 }
1e422769 2633
a0d0e21e 2634 if (flags & G_DISCARD) {
3280af22 2635 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2636 retval = 0;
2637 FREETMPS;
2638 LEAVE;
2639 }
533c011a 2640 PL_op = oldop;
a0d0e21e
LW
2641 return retval;
2642}
2643
6e72f9df 2644/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2645
954c1994
GS
2646/*
2647=for apidoc p||eval_sv
2648
2649Tells Perl to C<eval> the string in the SV.
2650
2651=cut
2652*/
2653
a0d0e21e 2654I32
864dbfa3 2655Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2656
8ac85365 2657 /* See G_* flags in cop.h */
a0d0e21e 2658{
97aff369 2659 dVAR;
924508f0 2660 dSP;
a0d0e21e 2661 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2662 VOL I32 oldmark = SP - PL_stack_base;
2663 VOL I32 retval = 0;
6224f72b 2664 int ret;
c4420975 2665 OP* const oldop = PL_op;
db36c5a1 2666 dJMPENV;
84902520 2667
7918f24d
NC
2668 PERL_ARGS_ASSERT_EVAL_SV;
2669
4633a7c4
LW
2670 if (flags & G_DISCARD) {
2671 ENTER;
2672 SAVETMPS;
2673 }
2674
462e5cf6 2675 SAVEOP();
533c011a
NIS
2676 PL_op = (OP*)&myop;
2677 Zero(PL_op, 1, UNOP);
3280af22
NIS
2678 EXTEND(PL_stack_sp, 1);
2679 *++PL_stack_sp = sv;
79072805 2680
4633a7c4
LW
2681 if (!(flags & G_NOARGS))
2682 myop.op_flags = OPf_STACKED;
5f66b61c 2683 myop.op_next = NULL;
6e72f9df 2684 myop.op_type = OP_ENTEREVAL;
4f911530 2685 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2686 if (flags & G_KEEPERR)
2687 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2688
dedbcade
DM
2689 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2690 * before a PUSHEVAL, which corrupts the stack after a croak */
2691 TAINT_PROPER("eval_sv()");
2692
14dd3ad8 2693 JMPENV_PUSH(ret);
6224f72b
GS
2694 switch (ret) {
2695 case 0:
14dd3ad8 2696 redo_body:
d6f07c05 2697 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2698 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2699 if (!(flags & G_KEEPERR)) {
ab69dbc2 2700 CLEAR_ERRSV();
8433848b 2701 }
4633a7c4 2702 break;
6224f72b 2703 case 1:
f86702cc 2704 STATUS_ALL_FAILURE;
4633a7c4 2705 /* FALL THROUGH */
6224f72b 2706 case 2:
4633a7c4 2707 /* my_exit() was called */
3280af22 2708 PL_curstash = PL_defstash;
4633a7c4 2709 FREETMPS;
14dd3ad8 2710 JMPENV_POP;
f86702cc 2711 my_exit_jump();
4633a7c4 2712 /* NOTREACHED */
6224f72b 2713 case 3:
3280af22 2714 if (PL_restartop) {
533c011a 2715 PL_op = PL_restartop;
3280af22 2716 PL_restartop = 0;
312caa8e 2717 goto redo_body;
4633a7c4 2718 }
3280af22 2719 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2720 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2721 retval = 0;
2722 else {
2723 retval = 1;
3280af22 2724 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2725 }
312caa8e 2726 break;
4633a7c4
LW
2727 }
2728
14dd3ad8 2729 JMPENV_POP;
4633a7c4 2730 if (flags & G_DISCARD) {
3280af22 2731 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2732 retval = 0;
2733 FREETMPS;
2734 LEAVE;
2735 }
533c011a 2736 PL_op = oldop;
4633a7c4
LW
2737 return retval;
2738}
2739
954c1994
GS
2740/*
2741=for apidoc p||eval_pv
2742
2743Tells Perl to C<eval> the given string and return an SV* result.
2744
2745=cut
2746*/
2747
137443ea 2748SV*
864dbfa3 2749Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2750{
97aff369 2751 dVAR;
137443ea
PP
2752 dSP;
2753 SV* sv = newSVpv(p, 0);
2754
7918f24d
NC
2755 PERL_ARGS_ASSERT_EVAL_PV;
2756
864dbfa3 2757 eval_sv(sv, G_SCALAR);
137443ea
PP
2758 SvREFCNT_dec(sv);
2759
2760 SPAGAIN;
2761 sv = POPs;
2762 PUTBACK;
2763
2d8e6c8d 2764 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2765 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2766 }
137443ea
PP
2767
2768 return sv;
2769}
2770
4633a7c4
LW
2771/* Require a module. */
2772
954c1994 2773/*
ccfc67b7
JH
2774=head1 Embedding Functions
2775
954c1994
GS
2776=for apidoc p||require_pv
2777
7d3fb230
BS
2778Tells Perl to C<require> the file named by the string argument. It is
2779analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2780implemented that way; consider using load_module instead.
954c1994 2781
7d3fb230 2782=cut */
954c1994 2783
4633a7c4 2784void
864dbfa3 2785Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2786{
97aff369 2787 dVAR;
d3acc0f7 2788 dSP;
97aff369 2789 SV* sv;
7918f24d
NC
2790
2791 PERL_ARGS_ASSERT_REQUIRE_PV;
2792
e788e7d3 2793 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2794 PUTBACK;
be41e5d9
NC
2795 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2796 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2797 SPAGAIN;
2798 POPSTACK;
79072805
LW
2799}
2800
76e3520e 2801STATIC void
e1ec3a88 2802S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2803{
ab821d7f 2804 /* This message really ought to be max 23 lines.
75c72d73 2805 * Removed -h because the user already knows that option. Others? */
fb73857a 2806
27da23d5 2807 static const char * const usage_msg[] = {
aefc56c5 2808"-0[octal] specify record separator (\\0, if no argument)",
aefc56c5
SF
2809"-a autosplit mode with -n or -p (splits $_ into @F)",
2810"-C[number/list] enables the listed Unicode features",
2811"-c check syntax only (runs BEGIN and CHECK blocks)",
2812"-d[:debugger] run program under debugger",
2813"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2814"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2815"-E program like -e, but enables all optional features",
aefc56c5 2816"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2817"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2818"-i[extension] edit <> files in place (makes backup if extension supplied)",
2819"-Idirectory specify @INC/#include directory (several -I's allowed)",
2820"-l[octal] enable line ending processing, specifies line terminator",
2821"-[mM][-]module execute \"use/no module...\" before executing program",
2822"-n assume \"while (<>) { ... }\" loop around program",
2823"-p assume loop like -n but print line also, like sed",
aefc56c5
SF
2824"-s enable rudimentary parsing for switches after programfile",
2825"-S look for programfile using PATH environment variable",
2826"-t enable tainting warnings",
2827"-T enable tainting checks",
2828"-u dump core after parsing program",
2829"-U allow unsafe operations",
2830"-v print version, subversion (includes VERY IMPORTANT perl info)",
2831"-V[:variable] print configuration summary (or a single Config.pm variable)",
2832"-w enable many useful warnings (RECOMMENDED)",
2833"-W enable all warnings",
2834"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2835"-X disable all warnings",
fb73857a
PP
2836"\n",
2837NULL
2838};
27da23d5 2839 const char * const *p = usage_msg;
fb73857a 2840
7918f24d
NC
2841 PERL_ARGS_ASSERT_USAGE;
2842
b0e47665
GS
2843 PerlIO_printf(PerlIO_stdout(),
2844 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2845 name);
fb73857a 2846 while (*p)
b0e47665 2847 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2848}
2849
b4ab917c
DM
2850/* convert a string of -D options (or digits) into an int.
2851 * sets *s to point to the char after the options */
2852
2853#ifdef DEBUGGING
2854int
e1ec3a88 2855Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2856{
27da23d5 2857 static const char * const usage_msgd[] = {
e6e64d9b
JC
2858 " Debugging flag values: (see also -d)",
2859 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2860 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2861 " l Context (loop) stack processing",
2862 " t Trace execution",
2863 " o Method and overloading resolution",
2864 " c String/numeric conversions",
4c84d7f2 2865 " P Print profiling info, source file input state",
d7a2c63c 2866 " m Memory and SV allocation",
e6e64d9b
JC
2867 " f Format processing",
2868 " r Regular expression parsing and execution",
2869 " x Syntax tree dump",
3679267a 2870 " u Tainting checks",
e6e64d9b
JC
2871 " H Hash dump -- usurps values()",
2872 " X Scratchpad allocation",
2873 " D Cleaning up",
e6e64d9b
JC
2874 " T Tokenising",
2875 " R Include reference counts of dumped variables (eg when using -Ds)",
2876 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2877 " v Verbose: use in conjunction with other flags",
2878 " C Copy On Write",
2879 " A Consistency checks on internal structures",
3679267a 2880 " q quiet - currently only suppresses the 'EXECUTING' message",
d7c0d282 2881 " M trace smart match resolution",
cc8773c0 2882 " B dump suBroutine definitions, including special Blocks like BEGIN",
e6e64d9b
JC
2883 NULL
2884 };
b4ab917c 2885 int i = 0;
7918f24d
NC
2886
2887 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2888
b4ab917c
DM
2889 if (isALPHA(**s)) {
2890 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2891 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2892
2893 for (; isALNUM(**s); (*s)++) {
c4420975 2894 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2895 if (d)
2896 i |= 1 << (d - debopts);
2897 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2898 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2899 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2900 }
2901 }
e6e64d9b 2902 else if (isDIGIT(**s)) {
b4ab917c
DM
2903 i = atoi(*s);
2904 for (; isALNUM(**s); (*s)++) ;
2905 }
ddcf8bc1 2906 else if (givehelp) {
06e869a4 2907 const char *const *p = usage_msgd;
e6e64d9b
JC
2908 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2909 }
b4ab917c
DM
2910# ifdef EBCDIC
2911 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2912 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2913 "-Dp not implemented on this platform\n");
2914# endif
2915 return i;
2916}
2917#endif
2918
79072805
LW
2919/* This routine handles any switches that can be given during run */
2920
c7030b81
NC
2921const char *
2922Perl_moreswitches(pTHX_ const char *s)
79072805 2923{
27da23d5 2924 dVAR;
84c133a0 2925 UV rschar;
0544e6df 2926 const char option = *s; /* used to remember option in -m/-M code */
79072805 2927
7918f24d
NC
2928 PERL_ARGS_ASSERT_MORESWITCHES;
2929
79072805
LW
2930 switch (*s) {
2931 case '0':
a863c7d1 2932 {
f2095865 2933 I32 flags = 0;
a3b680e6 2934 STRLEN numlen;
f2095865
JH
2935
2936 SvREFCNT_dec(PL_rs);
2937 if (s[1] == 'x' && s[2]) {
a3b680e6 2938 const char *e = s+=2;
f2095865
JH
2939 U8 *tmps;
2940
a3b680e6
AL
2941 while (*e)
2942 e++;
f2095865
JH
2943 numlen = e - s;
2944 flags = PERL_SCAN_SILENT_ILLDIGIT;
2945 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2946 if (s + numlen < e) {
2947 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2948 numlen = 0;
2949 s--;
2950 }
396482e1 2951 PL_rs = newSVpvs("");
c5661c80 2952 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2953 tmps = (U8*)SvPVX(PL_rs);
2954 uvchr_to_utf8(tmps, rschar);
2955 SvCUR_set(PL_rs, UNISKIP(rschar));
2956 SvUTF8_on(PL_rs);
2957 }
2958 else {
2959 numlen = 4;
2960 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2961 if (rschar & ~((U8)~0))
2962 PL_rs = &PL_sv_undef;
2963 else if (!rschar && numlen >= 2)
396482e1 2964 PL_rs = newSVpvs("");
f2095865
JH
2965 else {
2966 char ch = (char)rschar;
2967 PL_rs = newSVpvn(&ch, 1);
2968 }
2969 }
64ace3f8 2970 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 2971 return s + numlen;
a863c7d1 2972 }
46487f74 2973 case 'C':
a05d7ebb 2974 s++;
dd374669 2975 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
2976 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
2977 PL_utf8cache = -1;
46487f74 2978 return s;
2304df62 2979 case 'F':
3280af22 2980 PL_minus_F = TRUE;
ebce5377
RGS
2981 PL_splitstr = ++s;
2982 while (*s && !isSPACE(*s)) ++s;
e49e380e 2983 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 2984 return s;
79072805 2985 case 'a':
3280af22 2986 PL_minus_a = TRUE;
79072805
LW
2987 s++;
2988 return s;
2989 case 'c':
3280af22 2990 PL_minus_c = TRUE;
79072805
LW
2991 s++;
2992 return s;
2993 case 'd':
f20b2998 2994 forbid_setid('d', FALSE);
4633a7c4 2995 s++;
2cbb2ee1
RGS
2996
2997 /* -dt indicates to the debugger that threads will be used */
2998 if (*s == 't' && !isALNUM(s[1])) {
2999 ++s;
3000 my_setenv("PERL5DB_THREADED", "1");
3001 }
3002
70c94a19
RR
3003 /* The following permits -d:Mod to accepts arguments following an =
3004 in the fashion that -MSome::Mod does. */
3005 if (*s == ':' || *s == '=') {
f85893a1
NC
3006 const char *start = ++s;
3007 const char *const end = s + strlen(s);
396482e1 3008 SV * const sv = newSVpvs("use Devel::");
f85893a1 3009
70c94a19
RR
3010 /* We now allow -d:Module=Foo,Bar */
3011 while(isALNUM(*s) || *s==':') ++s;
3012 if (*s != '=')
f85893a1 3013 sv_catpvn(sv, start, end - start);
70c94a19
RR
3014 else {
3015 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3016 /* Don't use NUL as q// delimiter here, this string goes in the
3017 * environment. */
3018 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3019 }
f85893a1 3020 s = end;
184f32ec 3021 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3022 SvREFCNT_dec(sv);
4633a7c4 3023 }
ed094faf 3024 if (!PL_perldb) {
3280af22 3025 PL_perldb = PERLDB_ALL;
a0d0e21e 3026 init_debugger();
ed094faf 3027 }
79072805
LW
3028 return s;
3029 case 'D':
0453d815 3030 {
79072805 3031#ifdef DEBUGGING
f20b2998 3032 forbid_setid('D', FALSE);
b4ab917c 3033 s++;
dd374669 3034 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3035#else /* !DEBUGGING */
0453d815 3036 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3037 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3038 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3039 for (s++; isALNUM(*s); s++) ;
79072805 3040#endif
79072805 3041 return s;
0453d815 3042 }
4633a7c4 3043 case 'h':
ac27b0f5 3044 usage(PL_origargv[0]);
7ca617d0 3045 my_exit(0);
79072805 3046 case 'i':
43c5f42d 3047 Safefree(PL_inplace);
c030f24b
GH
3048#if defined(__CYGWIN__) /* do backup extension automagically */
3049 if (*(s+1) == '\0') {
c86a4f2e 3050 PL_inplace = savepvs(".bak");
c030f24b
GH
3051 return s+1;
3052 }
3053#endif /* __CYGWIN__ */
5ef5d758 3054 {
d4c19fe8 3055 const char * const start = ++s;
5ef5d758
NC
3056 while (*s && !isSPACE(*s))
3057 ++s;
3058
3059 PL_inplace = savepvn(start, s - start);
3060 }
7b8d334a 3061 if (*s) {
5ef5d758 3062 ++s;
7b8d334a 3063 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3064 s++;
7b8d334a 3065 }
fb73857a 3066 return s;
4e49a025 3067 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3068 forbid_setid('I', FALSE);
fb73857a
PP
3069 ++s;
3070 while (*s && isSPACE(*s))
3071 ++s;
3072 if (*s) {
c7030b81 3073 const char *e, *p;
0df16ed7
GS
3074 p = s;
3075 /* ignore trailing spaces (possibly followed by other switches) */
3076 do {
3077 for (e = p; *e && !isSPACE(*e); e++) ;
3078 p = e;
3079 while (isSPACE(*p))
3080 p++;
3081 } while (*p && *p != '-');
55b4bc1c 3082 incpush(s, e-s,
e28f3139 3083 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3084 s = p;
3085 if (*s == '-')
3086 s++;
79072805
LW
3087 }
3088 else
a67e862a 3089 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3090 return s;
79072805 3091 case 'l':
3280af22 3092 PL_minus_l = TRUE;
79072805 3093 s++;
7889fe52
NIS
3094 if (PL_ors_sv) {
3095 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3096 PL_ors_sv = NULL;
7889fe52 3097 }
79072805 3098 if (isDIGIT(*s)) {
53305cf1 3099 I32 flags = 0;
a3b680e6 3100 STRLEN numlen;
396482e1 3101 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3102 numlen = 3 + (*s == '0');
3103 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3104 s += numlen;
3105 }
3106 else {
8bfdd7d9 3107 if (RsPARA(PL_rs)) {
396482e1 3108 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3109 }
3110 else {
8bfdd7d9 3111 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3112 }
79072805
LW
3113 }
3114 return s;
1a30305b 3115 case 'M':
f20b2998 3116 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3117 /* FALL THROUGH */
3118 case 'm':
f20b2998 3119 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3120 if (*++s) {
c7030b81 3121 const char *start;
b64cb68c 3122 const char *end;
11343788 3123 SV *sv;
e1ec3a88 3124 const char *use = "use ";
0544e6df 3125 bool colon = FALSE;
a5f75d66 3126 /* -M-foo == 'no foo' */
d0043bd1
NC
3127 /* Leading space on " no " is deliberate, to make both
3128 possibilities the same length. */
3129 if (*s == '-') { use = " no "; ++s; }
3130 sv = newSVpvn(use,4);
a5f75d66 3131 start = s;
1a30305b 3132 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3133 while(isALNUM(*s) || *s==':') {
3134 if( *s++ == ':' ) {
3135 if( *s == ':' )
3136 s++;
3137 else
3138 colon = TRUE;
3139 }
3140 }
3141 if (s == start)
3142 Perl_croak(aTHX_ "Module name required with -%c option",
3143 option);
3144 if (colon)
3145 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3146 "contains single ':'",
63da6837 3147 (int)(s - start), start, option);
b64cb68c 3148 end = s + strlen(s);
c07a80fd 3149 if (*s != '=') {
b64cb68c 3150 sv_catpvn(sv, start, end - start);
0544e6df 3151 if (option == 'm') {
c07a80fd 3152 if (*s != '\0')
cea2e8a9 3153 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3154 sv_catpvs( sv, " ()");
c07a80fd
PP
3155 }
3156 } else {
11343788 3157 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3158 /* Use NUL as q''-delimiter. */
3159 sv_catpvs(sv, " split(/,/,q\0");
3160 ++s;
3161 sv_catpvn(sv, s, end - s);
396482e1 3162 sv_catpvs(sv, "\0)");
c07a80fd 3163 }
b64cb68c 3164 s = end;
29a861e7 3165 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3166 }
3167 else
0544e6df 3168 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3169 return s;
79072805 3170 case 'n':
3280af22 3171 PL_minus_n = TRUE;
79072805
LW
3172 s++;
3173 return s;
3174 case 'p':
3280af22 3175 PL_minus_p = TRUE;
79072805
LW
3176 s++;
3177 return s;
3178 case 's':
f20b2998 3179 forbid_setid('s', FALSE);
3280af22 3180 PL_doswitches = TRUE;
79072805
LW
3181 s++;
3182 return s;
6537fe72
MS
3183 case 't':
3184 if (!PL_tainting)
22f7c9c9 3185 TOO_LATE_FOR('t');
6537fe72
MS
3186 s++;
3187 return s;
463ee0b2 3188 case 'T':
3280af22 3189 if (!PL_tainting)
22f7c9c9 3190 TOO_LATE_FOR('T');
463ee0b2
LW
3191 s++;
3192 return s;
79072805 3193 case 'u':
3280af22 3194 PL_do_undump = TRUE;
79072805
LW
3195 s++;
3196 return s;
3197 case 'U':
3280af22 3198 PL_unsafe = TRUE;
79072805
LW
3199 s++;
3200 return s;
3201 case 'v':
d7aa5382 3202 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3203 upg_version(PL_patchlevel, TRUE);
8e9464f1 3204#if !defined(DGUX)
46807d8e
YO
3205 {
3206 SV* level= vstringify(PL_patchlevel);
3207#ifdef PERL_PATCHNUM
23d483e2
NC
3208# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3209 SV *num = newSVpvs(PERL_PATCHNUM "*");
3210# else
3211 SV *num = newSVpvs(PERL_PATCHNUM);
3212# endif
46807d8e
YO
3213
3214 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3215 SvREFCNT_dec(level);
3216 level= num;
3217 } else {
d0a9311f 3218 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3219 SvREFCNT_dec(num);
3220 }
3221 #endif
3222 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3223 "\nThis is perl " STRINGIFY(PERL_REVISION)
3224 ", version " STRINGIFY(PERL_VERSION)
3225 ", subversion " STRINGIFY(PERL_SUBVERSION)
3226 " (%"SVf") built for " ARCHNAME, level
3227 );
46807d8e
YO
3228 SvREFCNT_dec(level);
3229 }
8e9464f1
JH
3230#else /* DGUX */
3231/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3232 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3233 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3234 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3235 PerlIO_printf(PerlIO_stdout(),
3236 Perl_form(aTHX_ " built under %s at %s %s\n",
3237 OSNAME, __DATE__, __TIME__));
3238 PerlIO_printf(PerlIO_stdout(),
3239 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3240 OSVERS));
8e9464f1 3241#endif /* !DGUX */
fb73857a
PP
3242#if defined(LOCAL_PATCH_COUNT)
3243 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3244 PerlIO_printf(PerlIO_stdout(),
3245 "\n(with %d registered patch%s, "
3246 "see perl -V for more detail)",
bb7a0f54 3247 LOCAL_PATCH_COUNT,
b0e47665 3248 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3249#endif
1a30305b 3250
b0e47665 3251 PerlIO_printf(PerlIO_stdout(),
737f4459 3252 "\n\nCopyright 1987-2009, Larry Wall\n");
79072805 3253#ifdef MSDOS
b0e47665
GS
3254 PerlIO_printf(PerlIO_stdout(),
3255 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3256#endif
3257#ifdef DJGPP
b0e47665
GS
3258 PerlIO_printf(PerlIO_stdout(),
3259 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3260 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3261#endif
79072805 3262#ifdef OS2
b0e47665
GS
3263 PerlIO_printf(PerlIO_stdout(),
3264 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3265 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3266#endif
79072805 3267#ifdef atarist
b0e47665
GS
3268 PerlIO_printf(PerlIO_stdout(),
3269 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3270#endif
a3f9223b 3271#ifdef __BEOS__
b0e47665
GS
3272 PerlIO_printf(PerlIO_stdout(),
3273 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3274#endif
1d84e8df 3275#ifdef MPE
b0e47665 3276 PerlIO_printf(PerlIO_stdout(),
e583a879 3277 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3278#endif
9d116dd7 3279#ifdef OEMVS
b0e47665
GS
3280 PerlIO_printf(PerlIO_stdout(),
3281 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3282#endif
495c5fdc 3283#ifdef __VOS__
b0e47665 3284 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3285 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3286#endif
092bebab 3287#ifdef __OPEN_VM
b0e47665
GS
3288 PerlIO_printf(PerlIO_stdout(),
3289 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3290#endif
a1a0e61e 3291#ifdef POSIX_BC
b0e47665
GS
3292 PerlIO_printf(PerlIO_stdout(),
3293 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3294#endif
f83d2536 3295#ifdef EPOC
b0e47665 3296 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3297 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3298#endif
e1caacb4 3299#ifdef UNDER_CE
b475b3e6
JH
3300 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3301 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3302 wce_hitreturn();
3303#endif
a0fd4948 3304#ifdef __SYMBIAN32__
27da23d5
JH
3305 PerlIO_printf(PerlIO_stdout(),
3306 "Symbian port by Nokia, 2004-2005\n");
3307#endif
baed7233
DL
3308#ifdef BINARY_BUILD_NOTICE
3309 BINARY_BUILD_NOTICE;
3310#endif
b0e47665
GS
3311 PerlIO_printf(PerlIO_stdout(),
3312 "\n\
79072805 3313Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3314GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3315Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3316this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3317Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3318 my_exit(0);
79072805 3319 case 'w':
b2e5e6ba 3320 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3321 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3322 }
599cee73
PM
3323 s++;
3324 return s;
3325 case 'W':
ac27b0f5 3326 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3327 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3328 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3329 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3330 s++;
3331 return s;
3332 case 'X':
ac27b0f5 3333 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3334 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3335 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3336 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3337 s++;
3338 return s;
a0d0e21e 3339 case '*':
79072805 3340 case ' ':
d3133c89
NC
3341 while( *s == ' ' )
3342 ++s;
3343 if (s[0] == '-') /* Additional switches on #! line. */
3344 return s+1;
79072805 3345 break;
a0d0e21e 3346 case '-':
79072805 3347 case 0:
51882d45 3348#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3349 case '\r':
3350#endif
79072805
LW
3351 case '\n':
3352 case '\t':
3353 break;
aa689395
PP
3354#ifdef ALTERNATE_SHEBANG
3355 case 'S': /* OS/2 needs -S on "extproc" line. */
3356 break;
3357#endif
79072805 3358 default:
cea2e8a9 3359 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3360 }
bd61b366 3361 return NULL;
79072805
LW
3362}
3363
3364/* compliments of Tom Christiansen */
3365
3366/* unexec() can be found in the Gnu emacs distribution */
ee580363 3367/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3368
3369void
864dbfa3 3370Perl_my_unexec(pTHX)
79072805 3371{
b37c2d43 3372 PERL_UNUSED_CONTEXT;
79072805 3373#ifdef UNEXEC
b37c2d43
AL
3374 SV * prog = newSVpv(BIN_EXP, 0);
3375 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3376 int status = 1;
79072805
LW
3377 extern int etext;
3378
396482e1 3379 sv_catpvs(prog, "/perl");
396482e1 3380 sv_catpvs(file, ".perldump");
79072805 3381
ee580363
GS
3382 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3383 /* unexec prints msg to stderr in case of failure */
6ad3d225 3384 PerlProc_exit(status);
79072805 3385#else
a5f75d66
AD
3386# ifdef VMS
3387# include <lib$routines.h>
3388 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3389# elif defined(WIN32) || defined(__CYGWIN__)
3390 Perl_croak(aTHX_ "dump is not supported");
aa689395 3391# else
79072805 3392 ABORT(); /* for use with undump */
aa689395 3393# endif
a5f75d66 3394#endif
79072805
LW
3395}
3396
cb68f92d
GS
3397/* initialize curinterp */
3398STATIC void
cea2e8a9 3399S_init_interp(pTHX)
cb68f92d 3400{
97aff369 3401 dVAR;
acfe0abc
GS
3402#ifdef MULTIPLICITY
3403# define PERLVAR(var,type)
3404# define PERLVARA(var,n,type)
3405# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3406# define PERLVARI(var,type,init) aTHX->var = init;
3407# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3408# else
acfe0abc
GS
3409# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3410# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3411# endif
acfe0abc 3412# include "intrpvar.h"
acfe0abc
GS
3413# undef PERLVAR
3414# undef PERLVARA
3415# undef PERLVARI
3416# undef PERLVARIC
3417#else
3418# define PERLVAR(var,type)
3419# define PERLVARA(var,n,type)
3420# define PERLVARI(var,type,init) PL_##var = init;
3421# define PERLVARIC(var,type,init) PL_##var = init;
3422# include "intrpvar.h"
acfe0abc
GS
3423# undef PERLVAR
3424# undef PERLVARA
3425# undef PERLVARI
3426# undef PERLVARIC
cb68f92d
GS
3427#endif
3428
46ab3289
NC
3429 /* As these are inside a structure, PERLVARI isn't capable of initialising
3430 them */
6c3f0a89
NC
3431 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3432 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3433}
3434
76e3520e 3435STATIC void
cea2e8a9 3436S_init_main_stash(pTHX)
79072805 3437{
97aff369 3438 dVAR;
463ee0b2 3439 GV *gv;
6e72f9df 3440
3280af22 3441 PL_curstash = PL_defstash = newHV();
23579a14
NC
3442 /* We know that the string "main" will be in the global shared string
3443 table, so it's a small saving to use it rather than allocate another
3444 8 bytes. */
18916d0d 3445 PL_curstname = newSVpvs_share("main");
fafc274c 3446 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3447 /* If we hadn't caused another reference to "main" to be in the shared
3448 string table above, then it would be worth reordering these two,
3449 because otherwise all we do is delete "main" from it as a consequence
3450 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3451 SvREFCNT_dec(GvHV(gv));
23579a14 3452 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3453 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3454 SvREADONLY_on(gv);
fafc274c
NC
3455 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3456 SVt_PVAV)));
5a5094bd 3457 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3458 GvMULTI_on(PL_incgv);
fafc274c 3459 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3460 GvMULTI_on(PL_hintgv);
fafc274c 3461 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3462 SvREFCNT_inc_simple_void(PL_defgv);
fafc274c 3463 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5a5094bd 3464 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3465 GvMULTI_on(PL_errgv);
fafc274c 3466 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22 3467 GvMULTI_on(PL_replgv);
cea2e8a9 3468 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3469#ifdef PERL_DONT_CREATE_GVSV
3470 gv_SVadd(PL_errgv);
3471#endif
38a03e6e 3472 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
ab69dbc2 3473 CLEAR_ERRSV();
3280af22 3474 PL_curstash = PL_defstash;
11faa288 3475 CopSTASH_set(&PL_compiling, PL_defstash);
5c1737d1
NC
3476 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3477 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3478 SVt_PVHV));
4633a7c4 3479 /* We must init $/ before switches are processed. */
64ace3f8 3480 sv_setpvs(get_sv("/", GV_ADD), "\n");
79072805
LW
3481}
3482
fdf5d70d 3483STATIC int
2f352907 3484S_open_script(pTHX_ const char *scriptname, bool dosearch,
f20b2998 3485 bool *suidscript, PerlIO **rsfpp)
79072805 3486{
fdf5d70d 3487 int fdscript = -1;
27da23d5 3488 dVAR;
1b24ed4b 3489
7918f24d
NC
3490 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3491
3280af22 3492 if (PL_e_script) {
8afc33d6 3493 PL_origfilename = savepvs("-e");