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fix some 64-bit casts under DEBUG_LEAKING_SCALARS
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
32709fdf
A
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 by Larry Wall
6 * and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of Eärendil
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
378cc40b 27#include "EXTERN.h"
864dbfa3 28#define PERL_IN_PERL_C
378cc40b 29#include "perl.h"
e3321bb0 30#include "patchlevel.h" /* for local_patches */
4a5df386 31#include "XSUB.h"
378cc40b 32
011f1a1a
JH
33#ifdef NETWARE
34#include "nwutil.h"
011f1a1a
JH
35#endif
36
df5cef82 37/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW
38#ifdef I_UNISTD
39#include <unistd.h>
40#endif
a0d0e21e 41
2aa47728
NC
42#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
43# ifdef I_SYS_WAIT
44# include <sys/wait.h>
45# endif
bf357333
NC
46# ifdef I_SYSUIO
47# include <sys/uio.h>
48# endif
49
50union control_un {
51 struct cmsghdr cm;
52 char control[CMSG_SPACE(sizeof(int))];
53};
54
2aa47728
NC
55#endif
56
5311654c
JH
57#ifdef __BEOS__
58# define HZ 1000000
59#endif
60
61#ifndef HZ
62# ifdef CLK_TCK
63# define HZ CLK_TCK
64# else
65# define HZ 60
66# endif
67#endif
68
7114a2d2 69#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 70char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
71#endif
72
acfe0abc 73static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 74
cc69b689 75#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 76/* Drop everything. Heck, don't even try to call it */
cc69b689
NC
77# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
78#else
ec2019ad 79/* Drop almost everything */
cc69b689 80# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 81#endif
8d063cd8 82
d6f07c05
AL
83#define CALL_BODY_EVAL(myop) \
84 if (PL_op == (myop)) \
139d0ce6 85 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX); \
d6f07c05
AL
86 if (PL_op) \
87 CALLRUNOPS(aTHX);
88
89#define CALL_BODY_SUB(myop) \
90 if (PL_op == (myop)) \
139d0ce6 91 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
92 if (PL_op) \
93 CALLRUNOPS(aTHX);
94
95#define CALL_LIST_BODY(cv) \
96 PUSHMARK(PL_stack_sp); \
ad64d0ec 97 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
d6f07c05 98
e6827a76 99static void
daa7d858 100S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 101{
27da23d5 102 dVAR;
e6827a76
NC
103 if (!PL_curinterp) {
104 PERL_SET_INTERP(my_perl);
3db8f154 105#if defined(USE_ITHREADS)
e6827a76
NC
106 INIT_THREADS;
107 ALLOC_THREAD_KEY;
108 PERL_SET_THX(my_perl);
109 OP_REFCNT_INIT;
71ad1b0c 110 HINTS_REFCNT_INIT;
e6827a76 111 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
112 MUTEX_INIT(&PL_my_ctx_mutex);
113# endif
e6827a76 114 }
c0bce9aa
NC
115#if defined(USE_ITHREADS)
116 else
117#else
118 /* This always happens for non-ithreads */
119#endif
120 {
e6827a76
NC
121 PERL_SET_THX(my_perl);
122 }
123}
06d86050 124
cbec8ebe
DM
125
126/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
127
128void
129Perl_sys_init(int* argc, char*** argv)
130{
4fc0badb 131 dVAR;
7918f24d
NC
132
133 PERL_ARGS_ASSERT_SYS_INIT;
134
cbec8ebe
DM
135 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
136 PERL_UNUSED_ARG(argv);
137 PERL_SYS_INIT_BODY(argc, argv);
138}
139
140void
141Perl_sys_init3(int* argc, char*** argv, char*** env)
142{
4fc0badb 143 dVAR;
7918f24d
NC
144
145 PERL_ARGS_ASSERT_SYS_INIT3;
146
cbec8ebe
DM
147 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
148 PERL_UNUSED_ARG(argv);
149 PERL_UNUSED_ARG(env);
150 PERL_SYS_INIT3_BODY(argc, argv, env);
151}
152
153void
d0820ef1 154Perl_sys_term()
cbec8ebe 155{
4fc0badb 156 dVAR;
bf81751b
DM
157 if (!PL_veto_cleanup) {
158 PERL_SYS_TERM_BODY();
159 }
cbec8ebe
DM
160}
161
162
32e30700
GS
163#ifdef PERL_IMPLICIT_SYS
164PerlInterpreter *
7766f137
GS
165perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
166 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
167 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
168 struct IPerlDir* ipD, struct IPerlSock* ipS,
169 struct IPerlProc* ipP)
170{
171 PerlInterpreter *my_perl;
7918f24d
NC
172
173 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
174
9f653bb5 175 /* Newx() needs interpreter, so call malloc() instead */
32e30700 176 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 177 S_init_tls_and_interp(my_perl);
32e30700
GS
178 Zero(my_perl, 1, PerlInterpreter);
179 PL_Mem = ipM;
7766f137
GS
180 PL_MemShared = ipMS;
181 PL_MemParse = ipMP;
32e30700
GS
182 PL_Env = ipE;
183 PL_StdIO = ipStd;
184 PL_LIO = ipLIO;
185 PL_Dir = ipD;
186 PL_Sock = ipS;
187 PL_Proc = ipP;
7cb608b5 188 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 189
32e30700
GS
190 return my_perl;
191}
192#else
954c1994
GS
193
194/*
ccfc67b7
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195=head1 Embedding Functions
196
954c1994
GS
197=for apidoc perl_alloc
198
199Allocates a new Perl interpreter. See L<perlembed>.
200
201=cut
202*/
203
93a17b20 204PerlInterpreter *
cea2e8a9 205perl_alloc(void)
79072805 206{
cea2e8a9 207 PerlInterpreter *my_perl;
79072805 208
9f653bb5 209 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 210 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 211
e6827a76 212 S_init_tls_and_interp(my_perl);
7cb608b5 213#ifndef PERL_TRACK_MEMPOOL
07409e01 214 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
215#else
216 Zero(my_perl, 1, PerlInterpreter);
217 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
218 return my_perl;
219#endif
79072805 220}
32e30700 221#endif /* PERL_IMPLICIT_SYS */
79072805 222
954c1994
GS
223/*
224=for apidoc perl_construct
225
226Initializes a new Perl interpreter. See L<perlembed>.
227
228=cut
229*/
230
79072805 231void
0cb96387 232perl_construct(pTHXx)
79072805 233{
27da23d5 234 dVAR;
7918f24d
NC
235
236 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
237
8990e307 238#ifdef MULTIPLICITY
54aff467 239 init_interp();
ac27b0f5 240 PL_perl_destruct_level = 1;
54aff467 241#else
7918f24d 242 PERL_UNUSED_ARG(my_perl);
54aff467
GS
243 if (PL_perl_destruct_level > 0)
244 init_interp();
245#endif
34caed6d
DM
246 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
247
34caed6d
DM
248 /* set read-only and try to insure than we wont see REFCNT==0
249 very often */
250
251 SvREADONLY_on(&PL_sv_undef);
252 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
253
254 sv_setpv(&PL_sv_no,PL_No);
255 /* value lookup in void context - happens to have the side effect
a43d94f2
NC
256 of caching the numeric forms. However, as &PL_sv_no doesn't contain
257 a string that is a valid numer, we have to turn the public flags by
258 hand: */
34caed6d 259 SvNV(&PL_sv_no);
c1939273 260 SvIV(&PL_sv_no);
a43d94f2
NC
261 SvIOK_on(&PL_sv_no);
262 SvNOK_on(&PL_sv_no);
34caed6d
DM
263 SvREADONLY_on(&PL_sv_no);
264 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
265
266 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 267 SvNV(&PL_sv_yes);
c1939273 268 SvIV(&PL_sv_yes);
34caed6d
DM
269 SvREADONLY_on(&PL_sv_yes);
270 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
271
272 SvREADONLY_on(&PL_sv_placeholder);
273 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
274
275 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 276#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 277 PL_pidstatus = newHV();
ca0c25f6 278#endif
79072805 279
396482e1 280 PL_rs = newSVpvs("\n");
dc92893f 281
cea2e8a9 282 init_stacks();
79072805 283
748a9306 284 init_ids();
a5f75d66 285
312caa8e 286 JMPENV_BOOTSTRAP;
f86702cc
PP
287 STATUS_ALL_SUCCESS;
288
0672f40e 289 init_i18nl10n(1);
36477c24 290 SET_NUMERIC_STANDARD();
0b5b802d 291
ab821d7f 292#if defined(LOCAL_PATCH_COUNT)
3280af22 293 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
294#endif
295
52853b95
GS
296#ifdef HAVE_INTERP_INTERN
297 sys_intern_init();
298#endif
299
3a1ee7e8 300 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 301
3280af22
NIS
302 PL_fdpid = newAV(); /* for remembering popen pids by fd */
303 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 304 PL_errors = newSVpvs("");
76f68e9b
MHM
305 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
306 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
307 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 308#ifdef USE_ITHREADS
402d2eb1
NC
309 /* First entry is a list of empty elements. It needs to be initialised
310 else all hell breaks loose in S_find_uninit_var(). */
311 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 312 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 313#endif
e5dd39fc 314#ifdef USE_REENTRANT_API
59bd0823 315 Perl_reentrant_init(aTHX);
e5dd39fc 316#endif
3d47000e
AB
317
318 /* Note that strtab is a rather special HV. Assumptions are made
319 about not iterating on it, and not adding tie magic to it.
320 It is properly deallocated in perl_destruct() */
321 PL_strtab = newHV();
322
3d47000e
AB
323 HvSHAREKEYS_off(PL_strtab); /* mandatory */
324 hv_ksplit(PL_strtab, 512);
325
0631ea03
AB
326#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
327 _dyld_lookup_and_bind
328 ("__environ", (unsigned long *) &environ_pointer, NULL);
329#endif /* environ */
330
2f42fcb0
JH
331#ifndef PERL_MICRO
332# ifdef USE_ENVIRON_ARRAY
0631ea03 333 PL_origenviron = environ;
2f42fcb0 334# endif
0631ea03
AB
335#endif
336
5311654c 337 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 338 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
339 * BeOS has those, but returns the wrong value.
340 * The HZ if not originally defined has been by now
341 * been defined as CLK_TCK, if available. */
dbc1d986 342#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
343 PL_clocktick = sysconf(_SC_CLK_TCK);
344 if (PL_clocktick <= 0)
345#endif
346 PL_clocktick = HZ;
347
081fc587
AB
348 PL_stashcache = newHV();
349
e8e3635e 350 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 351 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 352
27da23d5
JH
353#ifdef HAS_MMAP
354 if (!PL_mmap_page_size) {
355#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
356 {
357 SETERRNO(0, SS_NORMAL);
358# ifdef _SC_PAGESIZE
359 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
360# else
361 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
362# endif
363 if ((long) PL_mmap_page_size < 0) {
364 if (errno) {
44f8325f 365 SV * const error = ERRSV;
d4c19fe8 366 SvUPGRADE(error, SVt_PV);
0510663f 367 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
368 }
369 else
370 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
371 }
372 }
373#else
374# ifdef HAS_GETPAGESIZE
375 PL_mmap_page_size = getpagesize();
376# else
377# if defined(I_SYS_PARAM) && defined(PAGESIZE)
378 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
379# endif
380# endif
381#endif
382 if (PL_mmap_page_size <= 0)
383 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
384 (IV) PL_mmap_page_size);
385 }
386#endif /* HAS_MMAP */
387
388#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
389 PL_timesbase.tms_utime = 0;
390 PL_timesbase.tms_stime = 0;
391 PL_timesbase.tms_cutime = 0;
392 PL_timesbase.tms_cstime = 0;
393#endif
394
7d113631
NC
395 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
396
a3e6e81e 397 PL_registered_mros = newHV();
9e169432
NC
398 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
399 HvMAX(PL_registered_mros) = 0;
a3e6e81e 400
8990e307 401 ENTER;
79072805
LW
402}
403
954c1994 404/*
62375a60
NIS
405=for apidoc nothreadhook
406
407Stub that provides thread hook for perl_destruct when there are
408no threads.
409
410=cut
411*/
412
413int
4e9e3734 414Perl_nothreadhook(pTHX)
62375a60 415{
96a5add6 416 PERL_UNUSED_CONTEXT;
62375a60
NIS
417 return 0;
418}
419
41e4abd8
NC
420#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
421void
422Perl_dump_sv_child(pTHX_ SV *sv)
423{
424 ssize_t got;
bf357333
NC
425 const int sock = PL_dumper_fd;
426 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
427 union control_un control;
428 struct msghdr msg;
808ad2d0 429 struct iovec vec[2];
bf357333 430 struct cmsghdr *cmptr;
808ad2d0
NC
431 int returned_errno;
432 unsigned char buffer[256];
41e4abd8 433
7918f24d
NC
434 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
435
bf357333 436 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
437 return;
438
439 PerlIO_flush(Perl_debug_log);
440
bf357333
NC
441 /* All these shenanigans are to pass a file descriptor over to our child for
442 it to dump out to. We can't let it hold open the file descriptor when it
443 forks, as the file descriptor it will dump to can turn out to be one end
444 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 445 be open, the wait would be forever.) */
bf357333
NC
446
447 msg.msg_control = control.control;
448 msg.msg_controllen = sizeof(control.control);
449 /* We're a connected socket so we don't need a destination */
450 msg.msg_name = NULL;
451 msg.msg_namelen = 0;
452 msg.msg_iov = vec;
808ad2d0 453 msg.msg_iovlen = 1;
bf357333
NC
454
455 cmptr = CMSG_FIRSTHDR(&msg);
456 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
457 cmptr->cmsg_level = SOL_SOCKET;
458 cmptr->cmsg_type = SCM_RIGHTS;
459 *((int *)CMSG_DATA(cmptr)) = 1;
460
461 vec[0].iov_base = (void*)&sv;
462 vec[0].iov_len = sizeof(sv);
463 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
464
465 if(got < 0) {
bf357333 466 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
467 abort();
468 }
bf357333
NC
469 if(got < sizeof(sv)) {
470 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
471 abort();
472 }
473
808ad2d0
NC
474 /* Return protocol is
475 int: errno value
476 unsigned char: length of location string (0 for empty)
477 unsigned char*: string (not terminated)
478 */
479 vec[0].iov_base = (void*)&returned_errno;
480 vec[0].iov_len = sizeof(returned_errno);
481 vec[1].iov_base = buffer;
482 vec[1].iov_len = 1;
483
484 got = readv(sock, vec, 2);
41e4abd8
NC
485
486 if(got < 0) {
487 perror("Debug leaking scalars parent read failed");
808ad2d0 488 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
489 abort();
490 }
808ad2d0 491 if(got < sizeof(returned_errno) + 1) {
41e4abd8 492 perror("Debug leaking scalars parent short read");
808ad2d0 493 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
494 abort();
495 }
496
808ad2d0
NC
497 if (*buffer) {
498 got = read(sock, buffer + 1, *buffer);
499 if(got < 0) {
500 perror("Debug leaking scalars parent read 2 failed");
501 PerlIO_flush(PerlIO_stderr());
502 abort();
503 }
504
505 if(got < *buffer) {
506 perror("Debug leaking scalars parent short read 2");
507 PerlIO_flush(PerlIO_stderr());
508 abort();
509 }
510 }
511
512 if (returned_errno || *buffer) {
513 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
514 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
515 returned_errno, strerror(returned_errno));
41e4abd8
NC
516 }
517}
518#endif
519
62375a60 520/*
954c1994
GS
521=for apidoc perl_destruct
522
523Shuts down a Perl interpreter. See L<perlembed>.
524
525=cut
526*/
527
31d77e54 528int
0cb96387 529perl_destruct(pTHXx)
79072805 530{
27da23d5 531 dVAR;
be2ea8ed 532 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 533 HV *hv;
2aa47728 534#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
535 pid_t child;
536#endif
8990e307 537
7918f24d
NC
538 PERL_ARGS_ASSERT_PERL_DESTRUCT;
539#ifndef MULTIPLICITY
ed6c66dd 540 PERL_UNUSED_ARG(my_perl);
7918f24d 541#endif
9d4ba2ae 542
3d22c4f0
GG
543 assert(PL_scopestack_ix == 1);
544
7766f137
GS
545 /* wait for all pseudo-forked children to finish */
546 PERL_WAIT_FOR_CHILDREN;
547
3280af22 548 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
549#ifdef DEBUGGING
550 {
9d4ba2ae
AL
551 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
552 if (s) {
e1ec3a88 553 const int i = atoi(s);
5f05dabc
PP
554 if (destruct_level < i)
555 destruct_level = i;
556 }
4633a7c4
LW
557 }
558#endif
559
27da23d5 560 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
561 dJMPENV;
562 int x = 0;
563
564 JMPENV_PUSH(x);
1b6737cc 565 PERL_UNUSED_VAR(x);
f3faeb53
AB
566 if (PL_endav && !PL_minus_c)
567 call_list(PL_scopestack_ix, PL_endav);
568 JMPENV_POP;
26f423df 569 }
f3faeb53 570 LEAVE;
a0d0e21e 571 FREETMPS;
3d22c4f0 572 assert(PL_scopestack_ix == 0);
a0d0e21e 573
e00b64d4 574 /* Need to flush since END blocks can produce output */
f13a2bc0 575 my_fflush_all();
e00b64d4 576
16c91539 577 if (PL_threadhook(aTHX)) {
62375a60 578 /* Threads hook has vetoed further cleanup */
c301d606 579 PL_veto_cleanup = TRUE;
37038d91 580 return STATUS_EXIT;
62375a60
NIS
581 }
582
2aa47728
NC
583#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
584 if (destruct_level != 0) {
585 /* Fork here to create a child. Our child's job is to preserve the
586 state of scalars prior to destruction, so that we can instruct it
587 to dump any scalars that we later find have leaked.
588 There's no subtlety in this code - it assumes POSIX, and it doesn't
589 fail gracefully */
590 int fd[2];
591
592 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
593 perror("Debug leaking scalars socketpair failed");
594 abort();
595 }
596
597 child = fork();
598 if(child == -1) {
599 perror("Debug leaking scalars fork failed");
600 abort();
601 }
602 if (!child) {
603 /* We are the child */
3125a5a4
NC
604 const int sock = fd[1];
605 const int debug_fd = PerlIO_fileno(Perl_debug_log);
606 int f;
808ad2d0
NC
607 const char *where;
608 /* Our success message is an integer 0, and a char 0 */
b61433a9 609 static const char success[sizeof(int) + 1] = {0};
3125a5a4 610
2aa47728 611 close(fd[0]);
2aa47728 612
3125a5a4
NC
613 /* We need to close all other file descriptors otherwise we end up
614 with interesting hangs, where the parent closes its end of a
615 pipe, and sits waiting for (another) child to terminate. Only
616 that child never terminates, because it never gets EOF, because
bf357333
NC
617 we also have the far end of the pipe open. We even need to
618 close the debugging fd, because sometimes it happens to be one
619 end of a pipe, and a process is waiting on the other end for
620 EOF. Normally it would be closed at some point earlier in
621 destruction, but if we happen to cause the pipe to remain open,
622 EOF never occurs, and we get an infinite hang. Hence all the
623 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
624
625 f = sysconf(_SC_OPEN_MAX);
626 if(f < 0) {
808ad2d0
NC
627 where = "sysconf failed";
628 goto abort;
3125a5a4
NC
629 }
630 while (f--) {
631 if (f == sock)
632 continue;
3125a5a4
NC
633 close(f);
634 }
635
2aa47728
NC
636 while (1) {
637 SV *target;
bf357333
NC
638 union control_un control;
639 struct msghdr msg;
640 struct iovec vec[1];
641 struct cmsghdr *cmptr;
642 ssize_t got;
643 int got_fd;
644
645 msg.msg_control = control.control;
646 msg.msg_controllen = sizeof(control.control);
647 /* We're a connected socket so we don't need a source */
648 msg.msg_name = NULL;
649 msg.msg_namelen = 0;
650 msg.msg_iov = vec;
651 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
652
653 vec[0].iov_base = (void*)&target;
654 vec[0].iov_len = sizeof(target);
655
656 got = recvmsg(sock, &msg, 0);
2aa47728
NC
657
658 if(got == 0)
659 break;
660 if(got < 0) {
808ad2d0
NC
661 where = "recv failed";
662 goto abort;
2aa47728
NC
663 }
664 if(got < sizeof(target)) {
808ad2d0
NC
665 where = "short recv";
666 goto abort;
2aa47728 667 }
bf357333 668
808ad2d0
NC
669 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
670 where = "no cmsg";
671 goto abort;
672 }
673 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
674 where = "wrong cmsg_len";
675 goto abort;
676 }
677 if(cmptr->cmsg_level != SOL_SOCKET) {
678 where = "wrong cmsg_level";
679 goto abort;
680 }
681 if(cmptr->cmsg_type != SCM_RIGHTS) {
682 where = "wrong cmsg_type";
683 goto abort;
684 }
bf357333
NC
685
686 got_fd = *(int*)CMSG_DATA(cmptr);
687 /* For our last little bit of trickery, put the file descriptor
688 back into Perl_debug_log, as if we never actually closed it
689 */
808ad2d0
NC
690 if(got_fd != debug_fd) {
691 if (dup2(got_fd, debug_fd) == -1) {
692 where = "dup2";
693 goto abort;
694 }
695 }
2aa47728 696 sv_dump(target);
bf357333 697
2aa47728
NC
698 PerlIO_flush(Perl_debug_log);
699
808ad2d0 700 got = write(sock, &success, sizeof(success));
2aa47728
NC
701
702 if(got < 0) {
808ad2d0
NC
703 where = "write failed";
704 goto abort;
2aa47728 705 }
808ad2d0
NC
706 if(got < sizeof(success)) {
707 where = "short write";
708 goto abort;
2aa47728
NC
709 }
710 }
711 _exit(0);
808ad2d0
NC
712 abort:
713 {
714 int send_errno = errno;
715 unsigned char length = (unsigned char) strlen(where);
716 struct iovec failure[3] = {
717 {(void*)&send_errno, sizeof(send_errno)},
718 {&length, 1},
719 {(void*)where, length}
720 };
721 int got = writev(sock, failure, 3);
722 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
723 in the parent if we try to read from the socketpair after the
724 child has exited, even if there was data to read.
725 So sleep a bit to give the parent a fighting chance of
726 reading the data. */
727 sleep(2);
728 _exit((got == -1) ? errno : 0);
729 }
bf357333 730 /* End of child. */
2aa47728 731 }
41e4abd8 732 PL_dumper_fd = fd[0];
2aa47728
NC
733 close(fd[1]);
734 }
735#endif
736
ff0cee69
PP
737 /* We must account for everything. */
738
739 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
740 /* Do this now, because destroying ops can cause new SVs to be generated
741 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
742 PL_curcop to point to a valid op from which the filename structure
743 member is copied. */
744 PL_curcop = &PL_compiling;
3280af22 745 if (PL_main_root) {
4e380990
DM
746 /* ensure comppad/curpad to refer to main's pad */
747 if (CvPADLIST(PL_main_cv)) {
748 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
749 }
3280af22 750 op_free(PL_main_root);
5f66b61c 751 PL_main_root = NULL;
a0d0e21e 752 }
5f66b61c 753 PL_main_start = NULL;
3280af22 754 SvREFCNT_dec(PL_main_cv);
601f1833 755 PL_main_cv = NULL;
24d3c518 756 PL_dirty = TRUE;
ff0cee69 757
13621cfb
NIS
758 /* Tell PerlIO we are about to tear things apart in case
759 we have layers which are using resources that should
760 be cleaned up now.
761 */
762
763 PerlIO_destruct(aTHX);
764
3280af22 765 if (PL_sv_objcount) {
a0d0e21e
LW
766 /*
767 * Try to destruct global references. We do this first so that the
768 * destructors and destructees still exist. Some sv's might remain.
769 * Non-referenced objects are on their own.
770 */
a0d0e21e 771 sv_clean_objs();
bf9cdc68 772 PL_sv_objcount = 0;
a0de6cf5 773 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 774 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
775 }
776
5cd24f17 777 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 778 SvREFCNT_dec(PL_warnhook);
a0714e2c 779 PL_warnhook = NULL;
3280af22 780 SvREFCNT_dec(PL_diehook);
a0714e2c 781 PL_diehook = NULL;
5cd24f17 782
4b556e6c 783 /* call exit list functions */
3280af22 784 while (PL_exitlistlen-- > 0)
acfe0abc 785 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 786
3280af22 787 Safefree(PL_exitlist);
4b556e6c 788
1c4916e5
CB
789 PL_exitlist = NULL;
790 PL_exitlistlen = 0;
791
a3e6e81e
NC
792 SvREFCNT_dec(PL_registered_mros);
793
551a8b83 794 /* jettison our possibly duplicated environment */
4b647fb0
DM
795 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
796 * so we certainly shouldn't free it here
797 */
2f42fcb0 798#ifndef PERL_MICRO
4b647fb0 799#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 800 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
801#ifdef USE_ITHREADS
802 /* only main thread can free environ[0] contents */
803 && PL_curinterp == aTHX
804#endif
805 )
806 {
551a8b83
JH
807 I32 i;
808
809 for (i = 0; environ[i]; i++)
4b420006 810 safesysfree(environ[i]);
0631ea03 811
4b420006
JH
812 /* Must use safesysfree() when working with environ. */
813 safesysfree(environ);
551a8b83
JH
814
815 environ = PL_origenviron;
816 }
817#endif
2f42fcb0 818#endif /* !PERL_MICRO */
551a8b83 819
30985c42
JH
820 if (destruct_level == 0) {
821
822 DEBUG_P(debprofdump());
823
824#if defined(PERLIO_LAYERS)
825 /* No more IO - including error messages ! */
826 PerlIO_cleanup(aTHX);
827#endif
828
829 CopFILE_free(&PL_compiling);
830 CopSTASH_free(&PL_compiling);
831
832 /* The exit() function will do everything that needs doing. */
833 return STATUS_EXIT;
834 }
835
804ffa60 836 /* reset so print() ends up where we expect */
a0714e2c 837 setdefout(NULL);
804ffa60 838
5f8cb046
DM
839#ifdef USE_ITHREADS
840 /* the syntax tree is shared between clones
841 * so op_free(PL_main_root) only ReREFCNT_dec's
842 * REGEXPs in the parent interpreter
843 * we need to manually ReREFCNT_dec for the clones
844 */
5f8cb046 845 SvREFCNT_dec(PL_regex_padav);
7d49f689 846 PL_regex_padav = NULL;
5f8cb046
DM
847 PL_regex_pad = NULL;
848#endif
849
ad64d0ec 850 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
851 PL_stashcache = NULL;
852
5f05dabc
PP
853 /* loosen bonds of global variables */
854
2f9285f8
DM
855 /* XXX can PL_parser still be non-null here? */
856 if(PL_parser && PL_parser->rsfp) {
857 (void)PerlIO_close(PL_parser->rsfp);
858 PL_parser->rsfp = NULL;
8ebc5c01
PP
859 }
860
84386e14
RGS
861 if (PL_minus_F) {
862 Safefree(PL_splitstr);
863 PL_splitstr = NULL;
864 }
865
8ebc5c01 866 /* switches */
3280af22
NIS
867 PL_minus_n = FALSE;
868 PL_minus_p = FALSE;
869 PL_minus_l = FALSE;
870 PL_minus_a = FALSE;
871 PL_minus_F = FALSE;
872 PL_doswitches = FALSE;
599cee73 873 PL_dowarn = G_WARN_OFF;
3280af22
NIS
874 PL_doextract = FALSE;
875 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
876 PL_unsafe = FALSE;
877
878 Safefree(PL_inplace);
bd61b366 879 PL_inplace = NULL;
a7cb1f99 880 SvREFCNT_dec(PL_patchlevel);
1e8125c6 881 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
882
883 if (PL_e_script) {
884 SvREFCNT_dec(PL_e_script);
a0714e2c 885 PL_e_script = NULL;
8ebc5c01
PP
886 }
887
bf9cdc68
RG
888 PL_perldb = 0;
889
8ebc5c01
PP
890 /* magical thingies */
891
e23d9e2f
CS
892 SvREFCNT_dec(PL_ofsgv); /* *, */
893 PL_ofsgv = NULL;
5f05dabc 894
7889fe52 895 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 896 PL_ors_sv = NULL;
8ebc5c01 897
3280af22 898 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 899 PL_rs = NULL;
dc92893f 900
d33b2eba 901 Safefree(PL_osname); /* $^O */
bd61b366 902 PL_osname = NULL;
5f05dabc 903
3280af22 904 SvREFCNT_dec(PL_statname);
a0714e2c
SS
905 PL_statname = NULL;
906 PL_statgv = NULL;
5f05dabc 907
8ebc5c01
PP
908 /* defgv, aka *_ should be taken care of elsewhere */
909
8ebc5c01 910 /* clean up after study() */
3280af22 911 SvREFCNT_dec(PL_lastscream);
a0714e2c 912 PL_lastscream = NULL;
3280af22
NIS
913 Safefree(PL_screamfirst);
914 PL_screamfirst = 0;
915 Safefree(PL_screamnext);
916 PL_screamnext = 0;
8ebc5c01 917
7d5ea4e7
GS
918 /* float buffer */
919 Safefree(PL_efloatbuf);
bd61b366 920 PL_efloatbuf = NULL;
7d5ea4e7
GS
921 PL_efloatsize = 0;
922
8ebc5c01 923 /* startup and shutdown function lists */
3280af22 924 SvREFCNT_dec(PL_beginav);
5a837c8f 925 SvREFCNT_dec(PL_beginav_save);
3280af22 926 SvREFCNT_dec(PL_endav);
7d30b5c4 927 SvREFCNT_dec(PL_checkav);
ece599bd 928 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
929 SvREFCNT_dec(PL_unitcheckav);
930 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 931 SvREFCNT_dec(PL_initav);
7d49f689
NC
932 PL_beginav = NULL;
933 PL_beginav_save = NULL;
934 PL_endav = NULL;
935 PL_checkav = NULL;
936 PL_checkav_save = NULL;
3c10abe3
AG
937 PL_unitcheckav = NULL;
938 PL_unitcheckav_save = NULL;
7d49f689 939 PL_initav = NULL;
5618dfe8 940
8ebc5c01 941 /* shortcuts just get cleared */
a0714e2c
SS
942 PL_envgv = NULL;
943 PL_incgv = NULL;
944 PL_hintgv = NULL;
945 PL_errgv = NULL;
946 PL_argvgv = NULL;
947 PL_argvoutgv = NULL;
948 PL_stdingv = NULL;
949 PL_stderrgv = NULL;
950 PL_last_in_gv = NULL;
951 PL_replgv = NULL;
952 PL_DBgv = NULL;
953 PL_DBline = NULL;
954 PL_DBsub = NULL;
955 PL_DBsingle = NULL;
956 PL_DBtrace = NULL;
957 PL_DBsignal = NULL;
601f1833 958 PL_DBcv = NULL;
7d49f689 959 PL_dbargs = NULL;
5c284bb0 960 PL_debstash = NULL;
8ebc5c01 961
7a1c5554 962 SvREFCNT_dec(PL_argvout_stack);
7d49f689 963 PL_argvout_stack = NULL;
8ebc5c01 964
5c831c24 965 SvREFCNT_dec(PL_modglobal);
5c284bb0 966 PL_modglobal = NULL;
5c831c24 967 SvREFCNT_dec(PL_preambleav);
7d49f689 968 PL_preambleav = NULL;
5c831c24 969 SvREFCNT_dec(PL_subname);
a0714e2c 970 PL_subname = NULL;
ca0c25f6 971#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 972 SvREFCNT_dec(PL_pidstatus);
5c284bb0 973 PL_pidstatus = NULL;
ca0c25f6 974#endif
5c831c24 975 SvREFCNT_dec(PL_toptarget);
a0714e2c 976 PL_toptarget = NULL;
5c831c24 977 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
978 PL_bodytarget = NULL;
979 PL_formtarget = NULL;
5c831c24 980
d33b2eba 981 /* free locale stuff */
b9582b6a 982#ifdef USE_LOCALE_COLLATE
d33b2eba 983 Safefree(PL_collation_name);
bd61b366 984 PL_collation_name = NULL;
b9582b6a 985#endif
d33b2eba 986
b9582b6a 987#ifdef USE_LOCALE_NUMERIC
d33b2eba 988 Safefree(PL_numeric_name);
bd61b366 989 PL_numeric_name = NULL;
a453c169 990 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 991 PL_numeric_radix_sv = NULL;
b9582b6a 992#endif
d33b2eba 993
5c831c24
GS
994 /* clear utf8 character classes */
995 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
996 SvREFCNT_dec(PL_utf8_ascii);
997 SvREFCNT_dec(PL_utf8_alpha);
998 SvREFCNT_dec(PL_utf8_space);
999 SvREFCNT_dec(PL_utf8_cntrl);
1000 SvREFCNT_dec(PL_utf8_graph);
1001 SvREFCNT_dec(PL_utf8_digit);
1002 SvREFCNT_dec(PL_utf8_upper);
1003 SvREFCNT_dec(PL_utf8_lower);
1004 SvREFCNT_dec(PL_utf8_print);
1005 SvREFCNT_dec(PL_utf8_punct);
1006 SvREFCNT_dec(PL_utf8_xdigit);
1007 SvREFCNT_dec(PL_utf8_mark);
1008 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1009 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1010 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1011 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1012 SvREFCNT_dec(PL_utf8_idstart);
1013 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c 1014 PL_utf8_alnum = NULL;
a0714e2c
SS
1015 PL_utf8_ascii = NULL;
1016 PL_utf8_alpha = NULL;
1017 PL_utf8_space = NULL;
1018 PL_utf8_cntrl = NULL;
1019 PL_utf8_graph = NULL;
1020 PL_utf8_digit = NULL;
1021 PL_utf8_upper = NULL;
1022 PL_utf8_lower = NULL;
1023 PL_utf8_print = NULL;
1024 PL_utf8_punct = NULL;
1025 PL_utf8_xdigit = NULL;
1026 PL_utf8_mark = NULL;
1027 PL_utf8_toupper = NULL;
1028 PL_utf8_totitle = NULL;
1029 PL_utf8_tolower = NULL;
1030 PL_utf8_tofold = NULL;
1031 PL_utf8_idstart = NULL;
1032 PL_utf8_idcont = NULL;
5c831c24 1033
971a9dd3 1034 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1035 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1036 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1037 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1038 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1039 CopFILE_free(&PL_compiling);
1040 CopSTASH_free(&PL_compiling);
5c831c24 1041
a0d0e21e 1042 /* Prepare to destruct main symbol table. */
5f05dabc 1043
3280af22
NIS
1044 hv = PL_defstash;
1045 PL_defstash = 0;
a0d0e21e 1046 SvREFCNT_dec(hv);
5c831c24 1047 SvREFCNT_dec(PL_curstname);
a0714e2c 1048 PL_curstname = NULL;
a0d0e21e 1049
5a844595
GS
1050 /* clear queued errors */
1051 SvREFCNT_dec(PL_errors);
a0714e2c 1052 PL_errors = NULL;
5a844595 1053
dd69841b
BB
1054 SvREFCNT_dec(PL_isarev);
1055
a0d0e21e 1056 FREETMPS;
9b387841 1057 if (destruct_level >= 2) {
3280af22 1058 if (PL_scopestack_ix != 0)
9b387841
NC
1059 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1060 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1061 (long)PL_scopestack_ix);
3280af22 1062 if (PL_savestack_ix != 0)
9b387841
NC
1063 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1064 "Unbalanced saves: %ld more saves than restores\n",
1065 (long)PL_savestack_ix);
3280af22 1066 if (PL_tmps_floor != -1)
9b387841
NC
1067 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1068 (long)PL_tmps_floor + 1);
a0d0e21e 1069 if (cxstack_ix != -1)
9b387841
NC
1070 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1071 (long)cxstack_ix + 1);
a0d0e21e 1072 }
8990e307 1073
57bb2458
JH
1074 /* the entries in this list are allocated via SV PVX's, so get freed
1075 * in sv_clean_all */
1076 Safefree(PL_my_cxt_list);
1077
8990e307 1078 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1079
1080 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1081 while (sv_clean_all() > 2)
5226ed68
JH
1082 ;
1083
d4777f27
GS
1084 AvREAL_off(PL_fdpid); /* no surviving entries */
1085 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1086 PL_fdpid = NULL;
d33b2eba 1087
6c644e78
GS
1088#ifdef HAVE_INTERP_INTERN
1089 sys_intern_clear();
1090#endif
1091
6e72f9df
PP
1092 /* Destruct the global string table. */
1093 {
1094 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1095 * so that sv_free() won't fail on them.
80459961
NC
1096 * Now that the global string table is using a single hunk of memory
1097 * for both HE and HEK, we either need to explicitly unshare it the
1098 * correct way, or actually free things here.
6e72f9df 1099 */
80459961
NC
1100 I32 riter = 0;
1101 const I32 max = HvMAX(PL_strtab);
c4420975 1102 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1103 HE *hent = array[0];
1104
6e72f9df 1105 for (;;) {
0453d815 1106 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1107 HE * const next = HeNEXT(hent);
9014280d 1108 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1109 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1110 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1111 Safefree(hent);
1112 hent = next;
6e72f9df
PP
1113 }
1114 if (!hent) {
1115 if (++riter > max)
1116 break;
1117 hent = array[riter];
1118 }
1119 }
80459961
NC
1120
1121 Safefree(array);
1122 HvARRAY(PL_strtab) = 0;
1123 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1124 }
3280af22 1125 SvREFCNT_dec(PL_strtab);
6e72f9df 1126
e652bb2f 1127#ifdef USE_ITHREADS
c21d1a0f 1128 /* free the pointer tables used for cloning */
a0739874 1129 ptr_table_free(PL_ptr_table);
bf9cdc68 1130 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1131#endif
a0739874 1132
d33b2eba
GS
1133 /* free special SVs */
1134
1135 SvREFCNT(&PL_sv_yes) = 0;
1136 sv_clear(&PL_sv_yes);
1137 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1138 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1139
1140 SvREFCNT(&PL_sv_no) = 0;
1141 sv_clear(&PL_sv_no);
1142 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1143 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1144
9f375a43
DM
1145 {
1146 int i;
1147 for (i=0; i<=2; i++) {
1148 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1149 sv_clear(PERL_DEBUG_PAD(i));
1150 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1151 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1152 }
1153 }
1154
0453d815 1155 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1156 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1157
eba0f806
DM
1158#ifdef DEBUG_LEAKING_SCALARS
1159 if (PL_sv_count != 0) {
1160 SV* sva;
1161 SV* sv;
1162 register SV* svend;
1163
ad64d0ec 1164 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1165 svend = &sva[SvREFCNT(sva)];
1166 for (sv = sva + 1; sv < svend; ++sv) {
1167 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1168 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1169 " flags=0x%"UVxf
fd0854ff 1170 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1171 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1172 "serial %"UVuf"\n",
574b8821
NC
1173 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1174 pTHX__VALUE,
fd0854ff
DM
1175 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1176 sv->sv_debug_line,
1177 sv->sv_debug_inpad ? "for" : "by",
1178 sv->sv_debug_optype ?
1179 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1180 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1181 sv->sv_debug_serial
fd0854ff 1182 );
2aa47728 1183#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1184 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1185#endif
eba0f806
DM
1186 }
1187 }
1188 }
1189 }
2aa47728
NC
1190#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1191 {
1192 int status;
1193 fd_set rset;
1194 /* Wait for up to 4 seconds for child to terminate.
1195 This seems to be the least effort way of timing out on reaping
1196 its exit status. */
1197 struct timeval waitfor = {4, 0};
41e4abd8 1198 int sock = PL_dumper_fd;
2aa47728
NC
1199
1200 shutdown(sock, 1);
1201 FD_ZERO(&rset);
1202 FD_SET(sock, &rset);
1203 select(sock + 1, &rset, NULL, NULL, &waitfor);
1204 waitpid(child, &status, WNOHANG);
1205 close(sock);
1206 }
1207#endif
eba0f806 1208#endif
77abb4c6
NC
1209#ifdef DEBUG_LEAKING_SCALARS_ABORT
1210 if (PL_sv_count)
1211 abort();
1212#endif
bf9cdc68 1213 PL_sv_count = 0;
eba0f806 1214
f1fac472
NC
1215#ifdef PERL_DEBUG_READONLY_OPS
1216 free(PL_slabs);
1217 PL_slabs = NULL;
1218 PL_slab_count = 0;
1219#endif
eba0f806 1220
56a2bab7 1221#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1222 /* No more IO - including error messages ! */
1223 PerlIO_cleanup(aTHX);
1224#endif
1225
9f4bd222 1226 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1227 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1228 for no arg - and will try and SvREFCNT_dec it.
1229 */
1230 SvREFCNT(&PL_sv_undef) = 0;
1231 SvREADONLY_off(&PL_sv_undef);
1232
3280af22 1233 Safefree(PL_origfilename);
bd61b366 1234 PL_origfilename = NULL;
3280af22 1235 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1236 PL_reg_start_tmp = (char**)NULL;
1237 PL_reg_start_tmpl = 0;
43c5f42d 1238 Safefree(PL_reg_curpm);
82ba1be6 1239 Safefree(PL_reg_poscache);
dd28f7bb 1240 free_tied_hv_pool();
3280af22 1241 Safefree(PL_op_mask);
cf36064f 1242 Safefree(PL_psig_name);
bf9cdc68 1243 PL_psig_name = (SV**)NULL;
d525a7b2 1244 PL_psig_ptr = (SV**)NULL;
ce08f86c 1245 Safefree(PL_psig_pend);
bf9cdc68 1246 PL_psig_pend = (int*)NULL;
31c91b43
LR
1247 {
1248 /* We need to NULL PL_psig_pend first, so that
1249 signal handlers know not to use it */
1250 int *psig_save = PL_psig_pend;
1251 PL_psig_pend = (int*)NULL;
1252 Safefree(psig_save);
1253 }
a0714e2c 1254 PL_formfeed = NULL;
6e72f9df 1255 nuke_stacks();
bf9cdc68
RG
1256 PL_tainting = FALSE;
1257 PL_taint_warn = FALSE;
3280af22 1258 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1259 PL_debug = 0;
ac27b0f5 1260
a0d0e21e 1261 DEBUG_P(debprofdump());
d33b2eba 1262
e5dd39fc 1263#ifdef USE_REENTRANT_API
10bc17b6 1264 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1265#endif
1266
612f20c3
GS
1267 sv_free_arenas();
1268
5d9a96ca
DM
1269 while (PL_regmatch_slab) {
1270 regmatch_slab *s = PL_regmatch_slab;
1271 PL_regmatch_slab = PL_regmatch_slab->next;
1272 Safefree(s);
1273 }
1274
fc36a67e
PP
1275 /* As the absolutely last thing, free the non-arena SV for mess() */
1276
3280af22 1277 if (PL_mess_sv) {
f350b448
NC
1278 /* we know that type == SVt_PVMG */
1279
9c63abab 1280 /* it could have accumulated taint magic */
f350b448
NC
1281 MAGIC* mg;
1282 MAGIC* moremagic;
1283 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1284 moremagic = mg->mg_moremagic;
1285 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1286 && mg->mg_len >= 0)
1287 Safefree(mg->mg_ptr);
1288 Safefree(mg);
9c63abab 1289 }
f350b448 1290
fc36a67e 1291 /* we know that type >= SVt_PV */
8bd4d4c5 1292 SvPV_free(PL_mess_sv);
3280af22
NIS
1293 Safefree(SvANY(PL_mess_sv));
1294 Safefree(PL_mess_sv);
a0714e2c 1295 PL_mess_sv = NULL;
fc36a67e 1296 }
37038d91 1297 return STATUS_EXIT;
79072805
LW
1298}
1299
954c1994
GS
1300/*
1301=for apidoc perl_free
1302
1303Releases a Perl interpreter. See L<perlembed>.
1304
1305=cut
1306*/
1307
79072805 1308void
0cb96387 1309perl_free(pTHXx)
79072805 1310{
5174512c
NC
1311 dVAR;
1312
7918f24d
NC
1313 PERL_ARGS_ASSERT_PERL_FREE;
1314
c301d606
DM
1315 if (PL_veto_cleanup)
1316 return;
1317
7cb608b5 1318#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1319 {
1320 /*
1321 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1322 * value as we're probably hunting memory leaks then
1323 */
1324 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1325 if (!s || atoi(s) == 0) {
4fd0a9b8 1326 const U32 old_debug = PL_debug;
55ef9aae
MHM
1327 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1328 thread at thread exit. */
4fd0a9b8
NC
1329 if (DEBUG_m_TEST) {
1330 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1331 "free this thread's memory\n");
1332 PL_debug &= ~ DEBUG_m_FLAG;
1333 }
55ef9aae
MHM
1334 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1335 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1336 PL_debug = old_debug;
55ef9aae
MHM
1337 }
1338 }
7cb608b5
NC
1339#endif
1340
acfe0abc 1341#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1342# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1343 {
acfe0abc 1344# ifdef NETWARE
7af12a34 1345 void *host = nw_internal_host;
acfe0abc 1346# else
7af12a34 1347 void *host = w32_internal_host;
acfe0abc 1348# endif
7af12a34 1349 PerlMem_free(aTHXx);
acfe0abc 1350# ifdef NETWARE
7af12a34 1351 nw_delete_internal_host(host);
acfe0abc 1352# else
7af12a34 1353 win32_delete_internal_host(host);
acfe0abc 1354# endif
7af12a34 1355 }
1c0ca838
GS
1356# else
1357 PerlMem_free(aTHXx);
1358# endif
acfe0abc
GS
1359#else
1360 PerlMem_free(aTHXx);
76e3520e 1361#endif
79072805
LW
1362}
1363
b7f7fff6 1364#if defined(USE_ITHREADS)
aebd1ac7
GA
1365/* provide destructors to clean up the thread key when libperl is unloaded */
1366#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1367
826955bd 1368#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1369#pragma fini "perl_fini"
666ad1ec
GA
1370#elif defined(__sun) && !defined(__GNUC__)
1371#pragma fini (perl_fini)
aebd1ac7
GA
1372#endif
1373
0dbb1585
AL
1374static void
1375#if defined(__GNUC__)
1376__attribute__((destructor))
aebd1ac7 1377#endif
de009b76 1378perl_fini(void)
aebd1ac7 1379{
27da23d5 1380 dVAR;
c301d606 1381 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1382 FREE_THREAD_KEY;
1383}
1384
1385#endif /* WIN32 */
1386#endif /* THREADS */
1387
4b556e6c 1388void
864dbfa3 1389Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1390{
97aff369 1391 dVAR;
3280af22
NIS
1392 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1393 PL_exitlist[PL_exitlistlen].fn = fn;
1394 PL_exitlist[PL_exitlistlen].ptr = ptr;
1395 ++PL_exitlistlen;
4b556e6c
JD
1396}
1397
56cf6df8
RGS
1398#ifdef HAS_PROCSELFEXE
1399/* This is a function so that we don't hold on to MAXPATHLEN
1400 bytes of stack longer than necessary
1401 */
1402STATIC void
e1ec3a88 1403S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1404{
1405 char buf[MAXPATHLEN];
1406 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1407
1408 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1409 includes a spurious NUL which will cause $^X to fail in system
1410 or backticks (this will prevent extensions from being built and
1411 many tests from working). readlink is not meant to add a NUL.
1412 Normal readlink works fine.
1413 */
1414 if (len > 0 && buf[len-1] == '\0') {
1415 len--;
1416 }
1417
1418 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1419 returning the text "unknown" from the readlink rather than the path
1420 to the executable (or returning an error from the readlink). Any valid
1421 path has a '/' in it somewhere, so use that to validate the result.
1422 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1423 */
1424 if (len > 0 && memchr(buf, '/', len)) {
1425 sv_setpvn(sv,buf,len);
1426 }
1427 else {
1428 sv_setpv(sv,arg0);
1429 }
1430}
1431#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1432
1433STATIC void
1434S_set_caret_X(pTHX) {
97aff369 1435 dVAR;
fafc274c 1436 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1437 if (tmpgv) {
1438#ifdef HAS_PROCSELFEXE
1439 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1440#else
1441#ifdef OS2
c69033f2 1442 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1443#else
c69033f2 1444 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1445#endif
1446#endif
1447 }
1448}
1449
954c1994
GS
1450/*
1451=for apidoc perl_parse
1452
1453Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1454
1455=cut
1456*/
1457
79072805 1458int
0cb96387 1459perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1460{
27da23d5 1461 dVAR;
6224f72b 1462 I32 oldscope;
6224f72b 1463 int ret;
db36c5a1 1464 dJMPENV;
8d063cd8 1465
7918f24d
NC
1466 PERL_ARGS_ASSERT_PERL_PARSE;
1467#ifndef MULTIPLICITY
ed6c66dd 1468 PERL_UNUSED_ARG(my_perl);
7918f24d 1469#endif
9d4ba2ae 1470
b0891165
JH
1471#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1472 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1473 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1474 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1475 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1476 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1477 if (!PL_rehash_seed_set)
1478 PL_rehash_seed = get_hash_seed();
b0891165 1479 {
9d4ba2ae 1480 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1481
1b6737cc
AL
1482 if (s && (atoi(s) == 1))
1483 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1484 }
1485#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1486
3280af22 1487 PL_origargc = argc;
e2975953 1488 PL_origargv = argv;
a0d0e21e 1489
a2722ac9
GA
1490 if (PL_origalen != 0) {
1491 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1492 }
1493 else {
3cb9023d
JH
1494 /* Set PL_origalen be the sum of the contiguous argv[]
1495 * elements plus the size of the env in case that it is
e9137a8e 1496 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1497 * as the maximum modifiable length of $0. In the worst case
1498 * the area we are able to modify is limited to the size of
43c32782 1499 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1500 * --jhi */
e1ec3a88 1501 const char *s = NULL;
54bfe034 1502 int i;
1b6737cc 1503 const UV mask =
7d8e7db3 1504 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1505 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1506 const UV aligned =
43c32782
JH
1507 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1508
1509 /* See if all the arguments are contiguous in memory. Note
1510 * that 'contiguous' is a loose term because some platforms
1511 * align the argv[] and the envp[]. If the arguments look
1512 * like non-aligned, assume that they are 'strictly' or
1513 * 'traditionally' contiguous. If the arguments look like
1514 * aligned, we just check that they are within aligned
1515 * PTRSIZE bytes. As long as no system has something bizarre
1516 * like the argv[] interleaved with some other data, we are
1517 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1518 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1519 while (*s) s++;
1520 for (i = 1; i < PL_origargc; i++) {
1521 if ((PL_origargv[i] == s + 1
43c32782 1522#ifdef OS2
c8941eeb 1523 || PL_origargv[i] == s + 2
43c32782 1524#endif
c8941eeb
JH
1525 )
1526 ||
1527 (aligned &&
1528 (PL_origargv[i] > s &&
1529 PL_origargv[i] <=
1530 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1531 )
1532 {
1533 s = PL_origargv[i];
1534 while (*s) s++;
1535 }
1536 else
1537 break;
54bfe034 1538 }
54bfe034 1539 }
a4a109c2
JD
1540
1541#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1542 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1543 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1544 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1545 ||
1546 (aligned &&
1547 (PL_origenviron[0] > s &&
1548 PL_origenviron[0] <=
1549 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1550 )
1551 {
9d419b5f 1552#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1553 s = PL_origenviron[0];
1554 while (*s) s++;
1555#endif
bd61b366 1556 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1557 /* Force copy of environment. */
1558 for (i = 1; PL_origenviron[i]; i++) {
1559 if (PL_origenviron[i] == s + 1
1560 ||
1561 (aligned &&
1562 (PL_origenviron[i] > s &&
1563 PL_origenviron[i] <=
1564 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1565 )
1566 {
1567 s = PL_origenviron[i];
1568 while (*s) s++;
1569 }
1570 else
1571 break;
54bfe034 1572 }
43c32782 1573 }
54bfe034 1574 }
a4a109c2
JD
1575#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1576
2d2af554 1577 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1578 }
1579
3280af22 1580 if (PL_do_undump) {
a0d0e21e
LW
1581
1582 /* Come here if running an undumped a.out. */
1583
3280af22
NIS
1584 PL_origfilename = savepv(argv[0]);
1585 PL_do_undump = FALSE;
a0d0e21e 1586 cxstack_ix = -1; /* start label stack again */
748a9306 1587 init_ids();
b7975bdd
NC
1588 assert (!PL_tainted);
1589 TAINT;
1590 S_set_caret_X(aTHX);
1591 TAINT_NOT;
a0d0e21e
LW
1592 init_postdump_symbols(argc,argv,env);
1593 return 0;
1594 }
1595
3280af22 1596 if (PL_main_root) {
3280af22 1597 op_free(PL_main_root);
5f66b61c 1598 PL_main_root = NULL;
ff0cee69 1599 }
5f66b61c 1600 PL_main_start = NULL;
3280af22 1601 SvREFCNT_dec(PL_main_cv);
601f1833 1602 PL_main_cv = NULL;
79072805 1603
3280af22
NIS
1604 time(&PL_basetime);
1605 oldscope = PL_scopestack_ix;
599cee73 1606 PL_dowarn = G_WARN_OFF;
f86702cc 1607
14dd3ad8 1608 JMPENV_PUSH(ret);
6224f72b 1609 switch (ret) {
312caa8e 1610 case 0:
14dd3ad8 1611 parse_body(env,xsinit);
3c10abe3
AG
1612 if (PL_unitcheckav)
1613 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1614 if (PL_checkav)
1615 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1616 ret = 0;
1617 break;
6224f72b
GS
1618 case 1:
1619 STATUS_ALL_FAILURE;
1620 /* FALL THROUGH */
1621 case 2:
1622 /* my_exit() was called */
3280af22 1623 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1624 LEAVE;
1625 FREETMPS;
3280af22 1626 PL_curstash = PL_defstash;
3c10abe3
AG
1627 if (PL_unitcheckav)
1628 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1629 if (PL_checkav)
1630 call_list(oldscope, PL_checkav);
37038d91 1631 ret = STATUS_EXIT;
14dd3ad8 1632 break;
6224f72b 1633 case 3:
bf49b057 1634 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1635 ret = 1;
1636 break;
6224f72b 1637 }
14dd3ad8
GS
1638 JMPENV_POP;
1639 return ret;
1640}
1641
4a5df386
NC
1642/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1643 miniperl, and we need to see those flags reflected in the values here. */
1644
1645/* What this returns is subject to change. Use the public interface in Config.
1646 */
1647static void
1648S_Internals_V(pTHX_ CV *cv)
1649{
1650 dXSARGS;
1651#ifdef LOCAL_PATCH_COUNT
1652 const int local_patch_count = LOCAL_PATCH_COUNT;
1653#else
1654 const int local_patch_count = 0;
1655#endif
2dc296d2 1656 const int entries = 3 + local_patch_count;
4a5df386
NC
1657 int i;
1658 static char non_bincompat_options[] =
1659# ifdef DEBUGGING
1660 " DEBUGGING"
1661# endif
1662# ifdef NO_MATHOMS
0d311fbe 1663 " NO_MATHOMS"
4a5df386
NC
1664# endif
1665# ifdef PERL_DISABLE_PMC
1666 " PERL_DISABLE_PMC"
1667# endif
1668# ifdef PERL_DONT_CREATE_GVSV
1669 " PERL_DONT_CREATE_GVSV"
1670# endif
9a044a43
NC
1671# ifdef PERL_EXTERNAL_GLOB
1672 " PERL_EXTERNAL_GLOB"
1673# endif
4a5df386
NC
1674# ifdef PERL_IS_MINIPERL
1675 " PERL_IS_MINIPERL"
1676# endif
1677# ifdef PERL_MALLOC_WRAP
1678 " PERL_MALLOC_WRAP"
1679# endif
1680# ifdef PERL_MEM_LOG
1681 " PERL_MEM_LOG"
1682# endif
1683# ifdef PERL_MEM_LOG_NOIMPL
1684 " PERL_MEM_LOG_NOIMPL"
1685# endif
1686# ifdef PERL_USE_DEVEL
1687 " PERL_USE_DEVEL"
1688# endif
1689# ifdef PERL_USE_SAFE_PUTENV
1690 " PERL_USE_SAFE_PUTENV"
1691# endif
de618ee4
NC
1692# ifdef USE_ATTRIBUTES_FOR_PERLIO
1693 " USE_ATTRIBUTES_FOR_PERLIO"
1694# endif
4a5df386
NC
1695# ifdef USE_FAST_STDIO
1696 " USE_FAST_STDIO"
1697# endif
5a8d8935
NC
1698# ifdef USE_PERL_ATOF
1699 " USE_PERL_ATOF"
1700# endif
0d311fbe
NC
1701# ifdef USE_SITECUSTOMIZE
1702 " USE_SITECUSTOMIZE"
1703# endif
4a5df386
NC
1704 ;
1705 PERL_UNUSED_ARG(cv);
1706 PERL_UNUSED_ARG(items);
1707
1708 EXTEND(SP, entries);
1709
1710 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1711 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1712 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1713
1714#ifdef __DATE__
1715# ifdef __TIME__
1716 PUSHs(Perl_newSVpvn_flags(aTHX_
1717 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1718 SVs_TEMP));
1719# else
1720 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1721 SVs_TEMP));
1722# endif
1723#else
1724 PUSHs(&PL_sv_undef);
1725#endif
1726
4a5df386
NC
1727 for (i = 1; i <= local_patch_count; i++) {
1728 /* This will be an undef, if PL_localpatches[i] is NULL. */
1729 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1730 }
1731
1732 XSRETURN(entries);
1733}
1734
be71fc8f
NC
1735#define INCPUSH_UNSHIFT 0x01
1736#define INCPUSH_ADD_OLD_VERS 0x02
1737#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1738#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1739#define INCPUSH_NOT_BASEDIR 0x10
1740#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1741#define INCPUSH_ADD_SUB_DIRS \
1742 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1743
312caa8e 1744STATIC void *
14dd3ad8 1745S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1746{
27da23d5 1747 dVAR;
2f9285f8 1748 PerlIO *rsfp;
312caa8e 1749 int argc = PL_origargc;
8f42b153 1750 char **argv = PL_origargv;
e1ec3a88 1751 const char *scriptname = NULL;
312caa8e 1752 VOL bool dosearch = FALSE;
c7030b81 1753 register char c;
bd61b366 1754 const char *cddir = NULL;
ab019eaa 1755#ifdef USE_SITECUSTOMIZE
20ef40cf 1756 bool minus_f = FALSE;
ab019eaa 1757#endif
009d90df 1758 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1759 bool add_read_e_script = FALSE;
009d90df
DM
1760
1761 SvGROW(linestr_sv, 80);
76f68e9b 1762 sv_setpvs(linestr_sv,"");
312caa8e 1763
6224f72b 1764 init_main_stash();
54310121 1765
c7030b81
NC
1766 {
1767 const char *s;
6224f72b
GS
1768 for (argc--,argv++; argc > 0; argc--,argv++) {
1769 if (argv[0][0] != '-' || !argv[0][1])
1770 break;
6224f72b
GS
1771 s = argv[0]+1;
1772 reswitch:
47f56822 1773 switch ((c = *s)) {
729a02f2 1774 case 'C':
1d5472a9
GS
1775#ifndef PERL_STRICT_CR
1776 case '\r':
1777#endif
6224f72b
GS
1778 case ' ':
1779 case '0':
1780 case 'F':
1781 case 'a':
1782 case 'c':
1783 case 'd':
1784 case 'D':
1785 case 'h':
1786 case 'i':
1787 case 'l':
1788 case 'M':
1789 case 'm':
1790 case 'n':
1791 case 'p':
1792 case 's':
1793 case 'u':
1794 case 'U':
1795 case 'v':
599cee73
PM
1796 case 'W':
1797 case 'X':
6224f72b 1798 case 'w':
97bd5664 1799 if ((s = moreswitches(s)))
6224f72b
GS
1800 goto reswitch;
1801 break;
33b78306 1802
1dbad523 1803 case 't':
22f7c9c9 1804 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1805 if( !PL_tainting ) {
1806 PL_taint_warn = TRUE;
1807 PL_tainting = TRUE;
1808 }
1809 s++;
1810 goto reswitch;
6224f72b 1811 case 'T':
22f7c9c9 1812 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1813 PL_tainting = TRUE;
317ea90d 1814 PL_taint_warn = FALSE;
6224f72b
GS
1815 s++;
1816 goto reswitch;
f86702cc 1817
bc9b29db
RH
1818 case 'E':
1819 PL_minus_E = TRUE;
1820 /* FALL THROUGH */
6224f72b 1821 case 'e':
f20b2998 1822 forbid_setid('e', FALSE);
3280af22 1823 if (!PL_e_script) {
396482e1 1824 PL_e_script = newSVpvs("");
5486870f 1825 add_read_e_script = TRUE;
6224f72b
GS
1826 }
1827 if (*++s)
3280af22 1828 sv_catpv(PL_e_script, s);
6224f72b 1829 else if (argv[1]) {
3280af22 1830 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1831 argc--,argv++;
1832 }
1833 else
47f56822 1834 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1835 sv_catpvs(PL_e_script, "\n");
6224f72b 1836 break;
afe37c7d 1837
20ef40cf 1838 case 'f':
f5542d3a 1839#ifdef USE_SITECUSTOMIZE
20ef40cf 1840 minus_f = TRUE;
f5542d3a 1841#endif
20ef40cf
GA
1842 s++;
1843 goto reswitch;
1844
6224f72b 1845 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1846 forbid_setid('I', FALSE);
bd61b366 1847 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1848 argc--,argv++;
1849 }
6224f72b 1850 if (s && *s) {
0df16ed7 1851 STRLEN len = strlen(s);
55b4bc1c 1852 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1853 }
1854 else
a67e862a 1855 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1856 break;
6224f72b 1857 case 'S':
f20b2998 1858 forbid_setid('S', FALSE);
6224f72b
GS
1859 dosearch = TRUE;
1860 s++;
1861 goto reswitch;
1862 case 'V':
7edfd0ef
NC
1863 {
1864 SV *opts_prog;
1865
7edfd0ef 1866 if (*++s != ':') {
37ca4a5b 1867 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1868 }
1869 else {
1870 ++s;
1871 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1872 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1873 0, s, 0);
1874 s += strlen(s);
1875 }
37ca4a5b 1876 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1877 /* don't look for script or read stdin */
1878 scriptname = BIT_BUCKET;
1879 goto reswitch;
6224f72b 1880 }
6224f72b 1881 case 'x':
3280af22 1882 PL_doextract = TRUE;
6224f72b 1883 s++;
304334da 1884 if (*s)
f4c556ac 1885 cddir = s;
6224f72b
GS
1886 break;
1887 case 0:
1888 break;
1889 case '-':
1890 if (!*++s || isSPACE(*s)) {
1891 argc--,argv++;
1892 goto switch_end;
1893 }
1894 /* catch use of gnu style long options */
1895 if (strEQ(s, "version")) {
dd374669 1896 s = (char *)"v";
6224f72b
GS
1897 goto reswitch;
1898 }
1899 if (strEQ(s, "help")) {
dd374669 1900 s = (char *)"h";
6224f72b
GS
1901 goto reswitch;
1902 }
1903 s--;
1904 /* FALL THROUGH */
1905 default:
cea2e8a9 1906 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1907 }
1908 }
c7030b81
NC
1909 }
1910
6224f72b 1911 switch_end:
54310121 1912
c7030b81
NC
1913 {
1914 char *s;
1915
f675dbe5
CB
1916 if (
1917#ifndef SECURE_INTERNAL_GETENV
1918 !PL_tainting &&
1919#endif
cf756827 1920 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1921 {
74288ac8
GS
1922 while (isSPACE(*s))
1923 s++;
317ea90d 1924 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1925 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1926 PL_tainting = TRUE;
317ea90d
MS
1927 PL_taint_warn = FALSE;
1928 }
74288ac8 1929 else {
bd61b366 1930 char *popt_copy = NULL;
74288ac8 1931 while (s && *s) {
54913509 1932 const char *d;
74288ac8
GS
1933 while (isSPACE(*s))
1934 s++;
1935 if (*s == '-') {
1936 s++;
1937 if (isSPACE(*s))
1938 continue;
1939 }
4ea8f8fb 1940 d = s;
74288ac8
GS
1941 if (!*s)
1942 break;
2b622f1a 1943 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1944 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1945 while (++s && *s) {
1946 if (isSPACE(*s)) {
cf756827 1947 if (!popt_copy) {
bfa6c418
NC
1948 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1949 s = popt_copy + (s - d);
1950 d = popt_copy;
cf756827 1951 }
4ea8f8fb
MS
1952 *s++ = '\0';
1953 break;
1954 }
1955 }
1c4db469 1956 if (*d == 't') {
317ea90d
MS
1957 if( !PL_tainting ) {
1958 PL_taint_warn = TRUE;
1959 PL_tainting = TRUE;
1960 }
1c4db469 1961 } else {
97bd5664 1962 moreswitches(d);
1c4db469 1963 }
6224f72b 1964 }
6224f72b
GS
1965 }
1966 }
c7030b81 1967 }
a0d0e21e 1968
87e06404 1969#if defined(USE_SITECUSTOMIZE) && !defined(PERL_IS_MINIPERL)
20ef40cf 1970 if (!minus_f) {
404ad9dc
NC
1971 /* SITELIB_EXP is a function call on Win32.
1972 The games with local $! are to avoid setting errno if there is no
1973 sitecustomize script. */
1974 const char *const sitelib = SITELIB_EXP;
29a861e7 1975 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1976 Perl_newSVpvf(aTHX_
1977 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
20ef40cf
GA
1978 }
1979#endif
1980
6224f72b
GS
1981 if (!scriptname)
1982 scriptname = argv[0];
3280af22 1983 if (PL_e_script) {
6224f72b
GS
1984 argc++,argv--;
1985 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1986 }
bd61b366 1987 else if (scriptname == NULL) {
6224f72b
GS
1988#ifdef MSDOS
1989 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1990 moreswitches("h");
6224f72b
GS
1991#endif
1992 scriptname = "-";
1993 }
1994
b7975bdd
NC
1995 /* Set $^X early so that it can be used for relocatable paths in @INC */
1996 assert (!PL_tainted);
1997 TAINT;
1998 S_set_caret_X(aTHX);
1999 TAINT_NOT;
2cace6ac 2000 init_perllib();
6224f72b 2001
a52eba0e 2002 {
f20b2998 2003 bool suidscript = FALSE;
829372d3 2004
cc69b689 2005 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2006
2f9285f8 2007 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2008 linestr_sv, rsfp);
6224f72b 2009
64ca3a65 2010#ifndef PERL_MICRO
a52eba0e
NC
2011# if defined(SIGCHLD) || defined(SIGCLD)
2012 {
2013# ifndef SIGCHLD
2014# define SIGCHLD SIGCLD
2015# endif
2016 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2017 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2018 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2019 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2020 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2021 }
0b5b802d 2022 }
a52eba0e 2023# endif
64ca3a65 2024#endif
0b5b802d 2025
e37778c2 2026 if (PL_doextract) {
faef540c 2027
f20b2998 2028 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2029 setuid scripts. */
2030 forbid_setid('x', suidscript);
f20b2998 2031 /* Hence you can't get here if suidscript is true */
faef540c 2032
2f9285f8 2033 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2034 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2035 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2036 }
f4c556ac 2037 }
6224f72b 2038
ea726b52 2039 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2040 CvUNIQUE_on(PL_compcv);
2041
dd2155a4 2042 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2043
dd69841b
BB
2044 PL_isarev = newHV();
2045
0c4f7ff0 2046 boot_core_PerlIO();
6224f72b 2047 boot_core_UNIVERSAL();
e1a479c5 2048 boot_core_mro();
4a5df386 2049 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2050
2051 if (xsinit)
acfe0abc 2052 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2053#ifndef PERL_MICRO
d0d72822 2054#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2055 init_os_extras();
6224f72b 2056#endif
64ca3a65 2057#endif
6224f72b 2058
29209bc5 2059#ifdef USE_SOCKS
1b9c9cf5
DH
2060# ifdef HAS_SOCKS5_INIT
2061 socks5_init(argv[0]);
2062# else
29209bc5 2063 SOCKSinit(argv[0]);
1b9c9cf5 2064# endif
ac27b0f5 2065#endif
29209bc5 2066
6224f72b
GS
2067 init_predump_symbols();
2068 /* init_postdump_symbols not currently designed to be called */
2069 /* more than once (ENV isn't cleared first, for example) */
2070 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2071 if (!PL_do_undump)
6224f72b
GS
2072 init_postdump_symbols(argc,argv,env);
2073
27da23d5
JH
2074 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2075 * or explicitly in some platforms.
085a54d9 2076 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2077 * look like the user wants to use UTF-8. */
a0fd4948 2078#if defined(__SYMBIAN32__)
27da23d5
JH
2079 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2080#endif
e27b5b51 2081# ifndef PERL_IS_MINIPERL
06e66572
JH
2082 if (PL_unicode) {
2083 /* Requires init_predump_symbols(). */
a05d7ebb 2084 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2085 IO* io;
2086 PerlIO* fp;
2087 SV* sv;
2088
a05d7ebb 2089 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2090 * and the default open disciplines. */
a05d7ebb
JH
2091 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2092 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2093 (fp = IoIFP(io)))
2094 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2095 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2096 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2097 (fp = IoOFP(io)))
2098 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2099 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2100 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2101 (fp = IoOFP(io)))
2102 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2103 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2104 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2105 SVt_PV)))) {
a05d7ebb
JH
2106 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2107 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2108 if (in) {
2109 if (out)
76f68e9b 2110 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2111 else
76f68e9b 2112 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2113 }
2114 else if (out)
76f68e9b 2115 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2116 SvSETMAGIC(sv);
2117 }
b310b053
JH
2118 }
2119 }
e27b5b51 2120#endif
b310b053 2121
c7030b81
NC
2122 {
2123 const char *s;
4ffa73a3
JH
2124 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2125 if (strEQ(s, "unsafe"))
2126 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2127 else if (strEQ(s, "safe"))
2128 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2129 else
2130 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2131 }
c7030b81 2132 }
4ffa73a3 2133
81d86705 2134#ifdef PERL_MAD
c7030b81
NC
2135 {
2136 const char *s;
81d86705
NC
2137 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2138 PL_madskills = 1;
2139 PL_minus_c = 1;
2140 if (!s || !s[0])
2141 PL_xmlfp = PerlIO_stdout();
2142 else {
2143 PL_xmlfp = PerlIO_open(s, "w");
2144 if (!PL_xmlfp)
2145 Perl_croak(aTHX_ "Can't open %s", s);
2146 }
1a9a51d4 2147 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2148 }
c7030b81
NC
2149 }
2150
2151 {
2152 const char *s;
81d86705
NC
2153 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2154 PL_madskills = atoi(s);
1a9a51d4 2155 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2156 }
c7030b81 2157 }
81d86705
NC
2158#endif
2159
5486870f 2160 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2161 PL_subname = newSVpvs("main");
6224f72b 2162
5486870f
DM
2163 if (add_read_e_script)
2164 filter_add(read_e_script, NULL);
2165
6224f72b
GS
2166 /* now parse the script */
2167
93189314 2168 SETERRNO(0,SS_NORMAL);
13765c85 2169 if (yyparse() || PL_parser->error_count) {
3280af22 2170 if (PL_minus_c)
cea2e8a9 2171 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2172 else {
cea2e8a9 2173 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2174 PL_origfilename);
6224f72b
GS
2175 }
2176 }
57843af0 2177 CopLINE_set(PL_curcop, 0);
3280af22 2178 PL_curstash = PL_defstash;
3280af22
NIS
2179 if (PL_e_script) {
2180 SvREFCNT_dec(PL_e_script);
a0714e2c 2181 PL_e_script = NULL;
6224f72b
GS
2182 }
2183
3280af22 2184 if (PL_do_undump)
6224f72b
GS
2185 my_unexec();
2186
57843af0
GS
2187 if (isWARN_ONCE) {
2188 SAVECOPFILE(PL_curcop);
2189 SAVECOPLINE(PL_curcop);
3280af22 2190 gv_check(PL_defstash);
57843af0 2191 }
6224f72b
GS
2192
2193 LEAVE;
2194 FREETMPS;
2195
2196#ifdef MYMALLOC
f6a607bc
RGS
2197 {
2198 const char *s;
6224f72b
GS
2199 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2200 dump_mstats("after compilation:");
f6a607bc 2201 }
6224f72b
GS
2202#endif
2203
2204 ENTER;
febb3a6d 2205 PL_restartjmpenv = NULL;
3280af22 2206 PL_restartop = 0;
312caa8e 2207 return NULL;
6224f72b
GS
2208}
2209
954c1994
GS
2210/*
2211=for apidoc perl_run
2212
2213Tells a Perl interpreter to run. See L<perlembed>.
2214
2215=cut
2216*/
2217
6224f72b 2218int
0cb96387 2219perl_run(pTHXx)
6224f72b 2220{
97aff369 2221 dVAR;
6224f72b 2222 I32 oldscope;
14dd3ad8 2223 int ret = 0;
db36c5a1 2224 dJMPENV;
6224f72b 2225
7918f24d
NC
2226 PERL_ARGS_ASSERT_PERL_RUN;
2227#ifndef MULTIPLICITY
ed6c66dd 2228 PERL_UNUSED_ARG(my_perl);
7918f24d 2229#endif
9d4ba2ae 2230
3280af22 2231 oldscope = PL_scopestack_ix;
96e176bf
CL
2232#ifdef VMS
2233 VMSISH_HUSHED = 0;
2234#endif
6224f72b 2235
14dd3ad8 2236 JMPENV_PUSH(ret);
6224f72b
GS
2237 switch (ret) {
2238 case 1:
2239 cxstack_ix = -1; /* start context stack again */
312caa8e 2240 goto redo_body;
14dd3ad8 2241 case 0: /* normal completion */
14dd3ad8
GS
2242 redo_body:
2243 run_body(oldscope);
14dd3ad8
GS
2244 /* FALL THROUGH */
2245 case 2: /* my_exit() */
3280af22 2246 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2247 LEAVE;
2248 FREETMPS;
3280af22 2249 PL_curstash = PL_defstash;
3a1ee7e8 2250 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2251 PL_endav && !PL_minus_c)
2252 call_list(oldscope, PL_endav);
6224f72b
GS
2253#ifdef MYMALLOC
2254 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2255 dump_mstats("after execution: ");
2256#endif
37038d91 2257 ret = STATUS_EXIT;
14dd3ad8 2258 break;
6224f72b 2259 case 3:
312caa8e
CS
2260 if (PL_restartop) {
2261 POPSTACK_TO(PL_mainstack);
2262 goto redo_body;
6224f72b 2263 }
bf49b057 2264 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2265 FREETMPS;
14dd3ad8
GS
2266 ret = 1;
2267 break;
6224f72b
GS
2268 }
2269
14dd3ad8
GS
2270 JMPENV_POP;
2271 return ret;
312caa8e
CS
2272}
2273
dd374669 2274STATIC void
14dd3ad8
GS
2275S_run_body(pTHX_ I32 oldscope)
2276{
97aff369 2277 dVAR;
6224f72b 2278 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2279 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2280
3280af22 2281 if (!PL_restartop) {
81d86705
NC
2282#ifdef PERL_MAD
2283 if (PL_xmlfp) {
2284 xmldump_all();
2285 exit(0); /* less likely to core dump than my_exit(0) */
2286 }
2287#endif
cf2782cd 2288#ifdef DEBUGGING
f0e3f042
CS
2289 if (DEBUG_x_TEST || DEBUG_B_TEST)
2290 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2291 if (!DEBUG_q_TEST)
2292 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2293#endif
6224f72b 2294
3280af22 2295 if (PL_minus_c) {
bf49b057 2296 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2297 my_exit(0);
2298 }
3280af22 2299 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2300 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2301 if (PL_initav)
2302 call_list(oldscope, PL_initav);
f1fac472
NC
2303#ifdef PERL_DEBUG_READONLY_OPS
2304 Perl_pending_Slabs_to_ro(aTHX);
2305#endif
6224f72b
GS
2306 }
2307
2308 /* do it */
2309
3280af22 2310 if (PL_restartop) {
febb3a6d 2311 PL_restartjmpenv = NULL;
533c011a 2312 PL_op = PL_restartop;
3280af22 2313 PL_restartop = 0;
cea2e8a9 2314 CALLRUNOPS(aTHX);
6224f72b 2315 }
3280af22
NIS
2316 else if (PL_main_start) {
2317 CvDEPTH(PL_main_cv) = 1;
533c011a 2318 PL_op = PL_main_start;
cea2e8a9 2319 CALLRUNOPS(aTHX);
6224f72b 2320 }
f6b3007c
JH
2321 my_exit(0);
2322 /* NOTREACHED */
6224f72b
GS
2323}
2324
954c1994 2325/*
ccfc67b7
JH
2326=head1 SV Manipulation Functions
2327
954c1994
GS
2328=for apidoc p||get_sv
2329
64ace3f8
NC
2330Returns the SV of the specified Perl scalar. C<flags> are passed to
2331C<gv_fetchpv>. If C<GV_ADD> is set and the
2332Perl variable does not exist then it will be created. If C<flags> is zero
2333and the variable does not exist then NULL is returned.
954c1994
GS
2334
2335=cut
2336*/
2337
6224f72b 2338SV*
64ace3f8 2339Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2340{
2341 GV *gv;
7918f24d
NC
2342
2343 PERL_ARGS_ASSERT_GET_SV;
2344
64ace3f8 2345 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2346 if (gv)
2347 return GvSV(gv);
a0714e2c 2348 return NULL;
6224f72b
GS
2349}
2350
954c1994 2351/*
ccfc67b7
JH
2352=head1 Array Manipulation Functions
2353
954c1994
GS
2354=for apidoc p||get_av
2355
cbfd0a87
NC
2356Returns the AV of the specified Perl array. C<flags> are passed to
2357C<gv_fetchpv>. If C<GV_ADD> is set and the
2358Perl variable does not exist then it will be created. If C<flags> is zero
2359and the variable does not exist then NULL is returned.
954c1994
GS
2360
2361=cut
2362*/
2363
6224f72b 2364AV*
cbfd0a87 2365Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2366{
cbfd0a87 2367 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2368
2369 PERL_ARGS_ASSERT_GET_AV;
2370
cbfd0a87 2371 if (flags)
6224f72b
GS
2372 return GvAVn(gv);
2373 if (gv)
2374 return GvAV(gv);
7d49f689 2375 return NULL;
6224f72b
GS
2376}
2377
954c1994 2378/*
ccfc67b7
JH
2379=head1 Hash Manipulation Functions
2380
954c1994
GS
2381=for apidoc p||get_hv
2382
6673a63c
NC
2383Returns the HV of the specified Perl hash. C<flags> are passed to
2384C<gv_fetchpv>. If C<GV_ADD> is set and the
2385Perl variable does not exist then it will be created. If C<flags> is zero
2386and the variable does not exist then NULL is returned.
954c1994
GS
2387
2388=cut
2389*/
2390
6224f72b 2391HV*
6673a63c 2392Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2393{
6673a63c 2394 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2395
2396 PERL_ARGS_ASSERT_GET_HV;
2397
6673a63c 2398 if (flags)
a0d0e21e
LW
2399 return GvHVn(gv);
2400 if (gv)
2401 return GvHV(gv);
5c284bb0 2402 return NULL;
a0d0e21e
LW
2403}
2404
954c1994 2405/*
ccfc67b7
JH
2406=head1 CV Manipulation Functions
2407
780a5241
NC
2408=for apidoc p||get_cvn_flags
2409
2410Returns the CV of the specified Perl subroutine. C<flags> are passed to
2411C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2412exist then it will be declared (which has the same effect as saying
2413C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2414then NULL is returned.
2415
954c1994
GS
2416=for apidoc p||get_cv
2417
780a5241 2418Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2419
2420=cut
2421*/
2422
a0d0e21e 2423CV*
780a5241 2424Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2425{
780a5241 2426 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2427 /* XXX this is probably not what they think they're getting.
2428 * It has the same effect as "sub name;", i.e. just a forward
2429 * declaration! */
7918f24d
NC
2430
2431 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2432
780a5241 2433 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2434 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2435 return newSUB(start_subparse(FALSE, 0),
780a5241 2436 newSVOP(OP_CONST, 0, sv),
5f66b61c 2437 NULL, NULL);
780a5241 2438 }
a0d0e21e 2439 if (gv)
8ebc5c01 2440 return GvCVu(gv);
601f1833 2441 return NULL;
a0d0e21e
LW
2442}
2443
2c67934f
NC
2444/* Nothing in core calls this now, but we can't replace it with a macro and
2445 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2446CV*
2447Perl_get_cv(pTHX_ const char *name, I32 flags)
2448{
7918f24d
NC
2449 PERL_ARGS_ASSERT_GET_CV;
2450
780a5241
NC
2451 return get_cvn_flags(name, strlen(name), flags);
2452}
2453
79072805
LW
2454/* Be sure to refetch the stack pointer after calling these routines. */
2455
954c1994 2456/*
ccfc67b7
JH
2457
2458=head1 Callback Functions
2459
954c1994
GS
2460=for apidoc p||call_argv
2461
2462Performs a callback to the specified Perl sub. See L<perlcall>.
2463
2464=cut
2465*/
2466
a0d0e21e 2467I32
8f42b153 2468Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2469
8ac85365
NIS
2470 /* See G_* flags in cop.h */
2471 /* null terminated arg list */
8990e307 2472{
97aff369 2473 dVAR;
a0d0e21e 2474 dSP;
8990e307 2475
7918f24d
NC
2476 PERL_ARGS_ASSERT_CALL_ARGV;
2477
924508f0 2478 PUSHMARK(SP);
a0d0e21e 2479 if (argv) {
8990e307 2480 while (*argv) {
6e449a3a 2481 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2482 argv++;
2483 }
a0d0e21e 2484 PUTBACK;
8990e307 2485 }
864dbfa3 2486 return call_pv(sub_name, flags);
8990e307
LW
2487}
2488
954c1994
GS
2489/*
2490=for apidoc p||call_pv
2491
2492Performs a callback to the specified Perl sub. See L<perlcall>.
2493
2494=cut
2495*/
2496
a0d0e21e 2497I32
864dbfa3 2498Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2499 /* name of the subroutine */
2500 /* See G_* flags in cop.h */
a0d0e21e 2501{
7918f24d
NC
2502 PERL_ARGS_ASSERT_CALL_PV;
2503
0da0e728 2504 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2505}
2506
954c1994
GS
2507/*
2508=for apidoc p||call_method
2509
2510Performs a callback to the specified Perl method. The blessed object must
2511be on the stack. See L<perlcall>.
2512
2513=cut
2514*/
2515
a0d0e21e 2516I32
864dbfa3 2517Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2518 /* name of the subroutine */
2519 /* See G_* flags in cop.h */
a0d0e21e 2520{
46ca9bac 2521 STRLEN len;
7918f24d
NC
2522 PERL_ARGS_ASSERT_CALL_METHOD;
2523
46ca9bac 2524 len = strlen(methname);
2525
2526 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2527 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2528}
2529
2530/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2531/*
2532=for apidoc p||call_sv
2533
2534Performs a callback to the Perl sub whose name is in the SV. See
2535L<perlcall>.
2536
2537=cut
2538*/
2539
a0d0e21e 2540I32
001d637e 2541Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2542 /* See G_* flags in cop.h */
a0d0e21e 2543{
27da23d5 2544 dVAR; dSP;
a0d0e21e 2545 LOGOP myop; /* fake syntax tree node */
968b3946 2546 UNOP method_op;
aa689395 2547 I32 oldmark;
8ea43dc8 2548 VOL I32 retval = 0;
a0d0e21e 2549 I32 oldscope;
54310121 2550 bool oldcatch = CATCH_GET;
6224f72b 2551 int ret;
c4420975 2552 OP* const oldop = PL_op;
db36c5a1 2553 dJMPENV;
1e422769 2554
7918f24d
NC
2555 PERL_ARGS_ASSERT_CALL_SV;
2556
a0d0e21e
LW
2557 if (flags & G_DISCARD) {
2558 ENTER;
2559 SAVETMPS;
2560 }
2f8edad0
NC
2561 if (!(flags & G_WANT)) {
2562 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2563 */
2564 flags |= G_SCALAR;
2565 }
a0d0e21e 2566
aa689395 2567 Zero(&myop, 1, LOGOP);
5f66b61c 2568 myop.op_next = NULL;
f51d4af5 2569 if (!(flags & G_NOARGS))
aa689395 2570 myop.op_flags |= OPf_STACKED;
4f911530 2571 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2572 SAVEOP();
533c011a 2573 PL_op = (OP*)&myop;
aa689395 2574
3280af22
NIS
2575 EXTEND(PL_stack_sp, 1);
2576 *++PL_stack_sp = sv;
aa689395 2577 oldmark = TOPMARK;
3280af22 2578 oldscope = PL_scopestack_ix;
a0d0e21e 2579
3280af22 2580 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2581 /* Handle first BEGIN of -d. */
3280af22 2582 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2583 /* Try harder, since this may have been a sighandler, thus
2584 * curstash may be meaningless. */
ea726b52 2585 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2586 && !(flags & G_NODEBUG))
533c011a 2587 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2588
968b3946
GS
2589 if (flags & G_METHOD) {
2590 Zero(&method_op, 1, UNOP);
2591 method_op.op_next = PL_op;
2592 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2593 method_op.op_type = OP_METHOD;
968b3946 2594 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2595 myop.op_type = OP_ENTERSUB;
f39d0b86 2596 PL_op = (OP*)&method_op;
968b3946
GS
2597 }
2598
312caa8e 2599 if (!(flags & G_EVAL)) {
0cdb2077 2600 CATCH_SET(TRUE);
d6f07c05 2601 CALL_BODY_SUB((OP*)&myop);
312caa8e 2602 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2603 CATCH_SET(oldcatch);
312caa8e
CS
2604 }
2605 else {
d78bda3d 2606 myop.op_other = (OP*)&myop;
3280af22 2607 PL_markstack_ptr--;
edb2152a 2608 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2609 PL_markstack_ptr++;
a0d0e21e 2610
14dd3ad8 2611 JMPENV_PUSH(ret);
edb2152a 2612
6224f72b
GS
2613 switch (ret) {
2614 case 0:
14dd3ad8 2615 redo_body:
d6f07c05 2616 CALL_BODY_SUB((OP*)&myop);
312caa8e 2617 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2618 if (!(flags & G_KEEPERR)) {
ab69dbc2 2619 CLEAR_ERRSV();
8433848b 2620 }
a0d0e21e 2621 break;
6224f72b 2622 case 1:
f86702cc 2623 STATUS_ALL_FAILURE;
a0d0e21e 2624 /* FALL THROUGH */
6224f72b 2625 case 2:
a0d0e21e 2626 /* my_exit() was called */
3280af22 2627 PL_curstash = PL_defstash;
a0d0e21e 2628 FREETMPS;
14dd3ad8 2629 JMPENV_POP;
f86702cc 2630 my_exit_jump();
a0d0e21e 2631 /* NOTREACHED */
6224f72b 2632 case 3:
3280af22 2633 if (PL_restartop) {
febb3a6d 2634 PL_restartjmpenv = NULL;
533c011a 2635 PL_op = PL_restartop;
3280af22 2636 PL_restartop = 0;
312caa8e 2637 goto redo_body;
a0d0e21e 2638 }
3280af22 2639 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2640 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2641 retval = 0;
2642 else {
2643 retval = 1;
3280af22 2644 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2645 }
312caa8e 2646 break;
a0d0e21e 2647 }
a0d0e21e 2648
edb2152a
NC
2649 if (PL_scopestack_ix > oldscope)
2650 delete_eval_scope();
14dd3ad8 2651 JMPENV_POP;
a0d0e21e 2652 }
1e422769 2653
a0d0e21e 2654 if (flags & G_DISCARD) {
3280af22 2655 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2656 retval = 0;
2657 FREETMPS;
2658 LEAVE;
2659 }
533c011a 2660 PL_op = oldop;
a0d0e21e
LW
2661 return retval;
2662}
2663
6e72f9df 2664/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2665
954c1994
GS
2666/*
2667=for apidoc p||eval_sv
2668
2669Tells Perl to C<eval> the string in the SV.
2670
2671=cut
2672*/
2673
a0d0e21e 2674I32
864dbfa3 2675Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2676
8ac85365 2677 /* See G_* flags in cop.h */
a0d0e21e 2678{
97aff369 2679 dVAR;
924508f0 2680 dSP;
a0d0e21e 2681 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2682 VOL I32 oldmark = SP - PL_stack_base;
2683 VOL I32 retval = 0;
6224f72b 2684 int ret;
c4420975 2685 OP* const oldop = PL_op;
db36c5a1 2686 dJMPENV;
84902520 2687
7918f24d
NC
2688 PERL_ARGS_ASSERT_EVAL_SV;
2689
4633a7c4
LW
2690 if (flags & G_DISCARD) {
2691 ENTER;
2692 SAVETMPS;
2693 }
2694
462e5cf6 2695 SAVEOP();
533c011a
NIS
2696 PL_op = (OP*)&myop;
2697 Zero(PL_op, 1, UNOP);
3280af22
NIS
2698 EXTEND(PL_stack_sp, 1);
2699 *++PL_stack_sp = sv;
79072805 2700
4633a7c4
LW
2701 if (!(flags & G_NOARGS))
2702 myop.op_flags = OPf_STACKED;
5f66b61c 2703 myop.op_next = NULL;
6e72f9df 2704 myop.op_type = OP_ENTEREVAL;
4f911530 2705 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2706 if (flags & G_KEEPERR)
2707 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2708
dedbcade
DM
2709 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2710 * before a PUSHEVAL, which corrupts the stack after a croak */
2711 TAINT_PROPER("eval_sv()");
2712
14dd3ad8 2713 JMPENV_PUSH(ret);
6224f72b
GS
2714 switch (ret) {
2715 case 0:
14dd3ad8 2716 redo_body:
d6f07c05 2717 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2718 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2719 if (!(flags & G_KEEPERR)) {
ab69dbc2 2720 CLEAR_ERRSV();
8433848b 2721 }
4633a7c4 2722 break;
6224f72b 2723 case 1:
f86702cc 2724 STATUS_ALL_FAILURE;
4633a7c4 2725 /* FALL THROUGH */
6224f72b 2726 case 2:
4633a7c4 2727 /* my_exit() was called */
3280af22 2728 PL_curstash = PL_defstash;
4633a7c4 2729 FREETMPS;
14dd3ad8 2730 JMPENV_POP;
f86702cc 2731 my_exit_jump();
4633a7c4 2732 /* NOTREACHED */
6224f72b 2733 case 3:
3280af22 2734 if (PL_restartop) {
febb3a6d 2735 PL_restartjmpenv = NULL;
533c011a 2736 PL_op = PL_restartop;
3280af22 2737 PL_restartop = 0;
312caa8e 2738 goto redo_body;
4633a7c4 2739 }
3280af22 2740 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2741 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2742 retval = 0;
2743 else {
2744 retval = 1;
3280af22 2745 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2746 }
312caa8e 2747 break;
4633a7c4
LW
2748 }
2749
14dd3ad8 2750 JMPENV_POP;
4633a7c4 2751 if (flags & G_DISCARD) {
3280af22 2752 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2753 retval = 0;
2754 FREETMPS;
2755 LEAVE;
2756 }
533c011a 2757 PL_op = oldop;
4633a7c4
LW
2758 return retval;
2759}
2760
954c1994
GS
2761/*
2762=for apidoc p||eval_pv
2763
2764Tells Perl to C<eval> the given string and return an SV* result.
2765
2766=cut
2767*/
2768
137443ea 2769SV*
864dbfa3 2770Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2771{
97aff369 2772 dVAR;
137443ea
PP
2773 dSP;
2774 SV* sv = newSVpv(p, 0);
2775
7918f24d
NC
2776 PERL_ARGS_ASSERT_EVAL_PV;
2777
864dbfa3 2778 eval_sv(sv, G_SCALAR);
137443ea
PP
2779 SvREFCNT_dec(sv);
2780
2781 SPAGAIN;
2782 sv = POPs;
2783 PUTBACK;
2784
2d8e6c8d 2785 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2786 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2787 }
137443ea
PP
2788
2789 return sv;
2790}
2791
4633a7c4
LW
2792/* Require a module. */
2793
954c1994 2794/*
ccfc67b7
JH
2795=head1 Embedding Functions
2796
954c1994
GS
2797=for apidoc p||require_pv
2798
7d3fb230
BS
2799Tells Perl to C<require> the file named by the string argument. It is
2800analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2801implemented that way; consider using load_module instead.
954c1994 2802
7d3fb230 2803=cut */
954c1994 2804
4633a7c4 2805void
864dbfa3 2806Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2807{
97aff369 2808 dVAR;
d3acc0f7 2809 dSP;
97aff369 2810 SV* sv;
7918f24d
NC
2811
2812 PERL_ARGS_ASSERT_REQUIRE_PV;
2813
e788e7d3 2814 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2815 PUTBACK;
be41e5d9
NC
2816 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2817 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2818 SPAGAIN;
2819 POPSTACK;
79072805
LW
2820}
2821
76e3520e 2822STATIC void
e1ec3a88 2823S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2824{
ab821d7f 2825 /* This message really ought to be max 23 lines.
75c72d73 2826 * Removed -h because the user already knows that option. Others? */
fb73857a 2827
1566c39d
NC
2828 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2829 minimum of 509 character string literals. */
27da23d5 2830 static const char * const usage_msg[] = {
1566c39d
NC
2831" -0[octal] specify record separator (\\0, if no argument)\n"
2832" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2833" -C[number/list] enables the listed Unicode features\n"
2834" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2835" -d[:debugger] run program under debugger\n"
2836" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2837" -e program one line of program (several -e's allowed, omit programfile)\n"
2838" -E program like -e, but enables all optional features\n"
2839" -f don't do $sitelib/sitecustomize.pl at startup\n"
2840" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2841" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2842" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2843" -l[octal] enable line ending processing, specifies line terminator\n"
2844" -[mM][-]module execute \"use/no module...\" before executing program\n"
2845" -n assume \"while (<>) { ... }\" loop around program\n"
2846" -p assume loop like -n but print line also, like sed\n"
2847" -s enable rudimentary parsing for switches after programfile\n"
2848" -S look for programfile using PATH environment variable\n",
2849" -t enable tainting warnings\n"
2850" -T enable tainting checks\n"
2851" -u dump core after parsing program\n"
2852" -U allow unsafe operations\n"
2853" -v print version, patchlevel and license\n"
2854" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2855" -w enable many useful warnings\n"
1566c39d
NC
2856" -W enable all warnings\n"
2857" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2858" -X disable all warnings\n"
2859" \n"
2860"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2861NULL
2862};
27da23d5 2863 const char * const *p = usage_msg;
1566c39d 2864 PerlIO *out = PerlIO_stdout();
fb73857a 2865
7918f24d
NC
2866 PERL_ARGS_ASSERT_USAGE;
2867
1566c39d
NC
2868 PerlIO_printf(out,
2869 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2870 name);
fb73857a 2871 while (*p)
1566c39d 2872 PerlIO_puts(out, *p++);
4633a7c4
LW
2873}
2874
b4ab917c
DM
2875/* convert a string of -D options (or digits) into an int.
2876 * sets *s to point to the char after the options */
2877
2878#ifdef DEBUGGING
2879int
e1ec3a88 2880Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2881{
27da23d5 2882 static const char * const usage_msgd[] = {
651b8f1a
NC
2883 " Debugging flag values: (see also -d)\n"
2884 " p Tokenizing and parsing (with v, displays parse stack)\n"
2885 " s Stack snapshots (with v, displays all stacks)\n"
2886 " l Context (loop) stack processing\n"
2887 " t Trace execution\n"
2888 " o Method and overloading resolution\n",
2889 " c String/numeric conversions\n"
2890 " P Print profiling info, source file input state\n"
2891 " m Memory and SV allocation\n"
2892 " f Format processing\n"
2893 " r Regular expression parsing and execution\n"
2894 " x Syntax tree dump\n",
2895 " u Tainting checks\n"
2896 " H Hash dump -- usurps values()\n"
2897 " X Scratchpad allocation\n"
2898 " D Cleaning up\n"
2899 " T Tokenising\n"
2900 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2901 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2902 " v Verbose: use in conjunction with other flags\n"
2903 " C Copy On Write\n"
2904 " A Consistency checks on internal structures\n"
2905 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2906 " M trace smart match resolution\n"
2907 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2908 NULL
2909 };
b4ab917c 2910 int i = 0;
7918f24d
NC
2911
2912 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2913
b4ab917c
DM
2914 if (isALPHA(**s)) {
2915 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2916 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2917
2918 for (; isALNUM(**s); (*s)++) {
c4420975 2919 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2920 if (d)
2921 i |= 1 << (d - debopts);
2922 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2923 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2924 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2925 }
2926 }
e6e64d9b 2927 else if (isDIGIT(**s)) {
b4ab917c
DM
2928 i = atoi(*s);
2929 for (; isALNUM(**s); (*s)++) ;
2930 }
ddcf8bc1 2931 else if (givehelp) {
06e869a4 2932 const char *const *p = usage_msgd;
651b8f1a 2933 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 2934 }
b4ab917c
DM
2935# ifdef EBCDIC
2936 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2937 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2938 "-Dp not implemented on this platform\n");
2939# endif
2940 return i;
2941}
2942#endif
2943
79072805
LW
2944/* This routine handles any switches that can be given during run */
2945
c7030b81
NC
2946const char *
2947Perl_moreswitches(pTHX_ const char *s)
79072805 2948{
27da23d5 2949 dVAR;
84c133a0 2950 UV rschar;
0544e6df 2951 const char option = *s; /* used to remember option in -m/-M code */
79072805 2952
7918f24d
NC
2953 PERL_ARGS_ASSERT_MORESWITCHES;
2954
79072805
LW
2955 switch (*s) {
2956 case '0':
a863c7d1 2957 {
f2095865 2958 I32 flags = 0;
a3b680e6 2959 STRLEN numlen;
f2095865
JH
2960
2961 SvREFCNT_dec(PL_rs);
2962 if (s[1] == 'x' && s[2]) {
a3b680e6 2963 const char *e = s+=2;
f2095865
JH
2964 U8 *tmps;
2965
a3b680e6
AL
2966 while (*e)
2967 e++;
f2095865
JH
2968 numlen = e - s;
2969 flags = PERL_SCAN_SILENT_ILLDIGIT;
2970 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2971 if (s + numlen < e) {
2972 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2973 numlen = 0;
2974 s--;
2975 }
396482e1 2976 PL_rs = newSVpvs("");
c5661c80 2977 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2978 tmps = (U8*)SvPVX(PL_rs);
2979 uvchr_to_utf8(tmps, rschar);
2980 SvCUR_set(PL_rs, UNISKIP(rschar));
2981 SvUTF8_on(PL_rs);
2982 }
2983 else {
2984 numlen = 4;
2985 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2986 if (rschar & ~((U8)~0))
2987 PL_rs = &PL_sv_undef;
2988 else if (!rschar && numlen >= 2)
396482e1 2989 PL_rs = newSVpvs("");
f2095865
JH
2990 else {
2991 char ch = (char)rschar;
2992 PL_rs = newSVpvn(&ch, 1);
2993 }
2994 }
64ace3f8 2995 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 2996 return s + numlen;
a863c7d1 2997 }
46487f74 2998 case 'C':
a05d7ebb 2999 s++;
dd374669 3000 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3001 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3002 PL_utf8cache = -1;
46487f74 3003 return s;
2304df62 3004 case 'F':
3280af22 3005 PL_minus_F = TRUE;
ebce5377
RGS
3006 PL_splitstr = ++s;
3007 while (*s && !isSPACE(*s)) ++s;
e49e380e 3008 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3009 return s;
79072805 3010 case 'a':
3280af22 3011 PL_minus_a = TRUE;
79072805
LW
3012 s++;
3013 return s;
3014 case 'c':
3280af22 3015 PL_minus_c = TRUE;
79072805
LW
3016 s++;
3017 return s;
3018 case 'd':
f20b2998 3019 forbid_setid('d', FALSE);
4633a7c4 3020 s++;
2cbb2ee1
RGS
3021
3022 /* -dt indicates to the debugger that threads will be used */
3023 if (*s == 't' && !isALNUM(s[1])) {
3024 ++s;
3025 my_setenv("PERL5DB_THREADED", "1");
3026 }
3027
70c94a19
RR
3028 /* The following permits -d:Mod to accepts arguments following an =
3029 in the fashion that -MSome::Mod does. */
3030 if (*s == ':' || *s == '=') {
f85893a1
NC
3031 const char *start = ++s;
3032 const char *const end = s + strlen(s);
396482e1 3033 SV * const sv = newSVpvs("use Devel::");
f85893a1 3034
70c94a19
RR
3035 /* We now allow -d:Module=Foo,Bar */
3036 while(isALNUM(*s) || *s==':') ++s;
3037 if (*s != '=')
f85893a1 3038 sv_catpvn(sv, start, end - start);
70c94a19
RR
3039 else {
3040 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3041 /* Don't use NUL as q// delimiter here, this string goes in the
3042 * environment. */
3043 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3044 }
f85893a1 3045 s = end;
184f32ec 3046 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3047 SvREFCNT_dec(sv);
4633a7c4 3048 }
ed094faf 3049 if (!PL_perldb) {
3280af22 3050 PL_perldb = PERLDB_ALL;
a0d0e21e 3051 init_debugger();
ed094faf 3052 }
79072805
LW
3053 return s;
3054 case 'D':
0453d815 3055 {
79072805 3056#ifdef DEBUGGING
f20b2998 3057 forbid_setid('D', FALSE);
b4ab917c 3058 s++;
dd374669 3059 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3060#else /* !DEBUGGING */
0453d815 3061 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3062 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3063 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3064 for (s++; isALNUM(*s); s++) ;
79072805 3065#endif
79072805 3066 return s;
0453d815 3067 }
4633a7c4 3068 case 'h':
ac27b0f5 3069 usage(PL_origargv[0]);
7ca617d0 3070 my_exit(0);
79072805 3071 case 'i':
43c5f42d 3072 Safefree(PL_inplace);
c030f24b
GH
3073#if defined(__CYGWIN__) /* do backup extension automagically */
3074 if (*(s+1) == '\0') {
c86a4f2e 3075 PL_inplace = savepvs(".bak");
c030f24b
GH
3076 return s+1;
3077 }
3078#endif /* __CYGWIN__ */
5ef5d758 3079 {
d4c19fe8 3080 const char * const start = ++s;
5ef5d758
NC
3081 while (*s && !isSPACE(*s))
3082 ++s;
3083
3084 PL_inplace = savepvn(start, s - start);
3085 }
7b8d334a 3086 if (*s) {
5ef5d758 3087 ++s;
7b8d334a 3088 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3089 s++;
7b8d334a 3090 }
fb73857a 3091 return s;
4e49a025 3092 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3093 forbid_setid('I', FALSE);
fb73857a
PP
3094 ++s;
3095 while (*s && isSPACE(*s))
3096 ++s;
3097 if (*s) {
c7030b81 3098 const char *e, *p;
0df16ed7
GS
3099 p = s;
3100 /* ignore trailing spaces (possibly followed by other switches) */
3101 do {
3102 for (e = p; *e && !isSPACE(*e); e++) ;
3103 p = e;
3104 while (isSPACE(*p))
3105 p++;
3106 } while (*p && *p != '-');
55b4bc1c 3107 incpush(s, e-s,
e28f3139 3108 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3109 s = p;
3110 if (*s == '-')
3111 s++;
79072805
LW
3112 }
3113 else
a67e862a 3114 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3115 return s;
79072805 3116 case 'l':
3280af22 3117 PL_minus_l = TRUE;
79072805 3118 s++;
7889fe52
NIS
3119 if (PL_ors_sv) {
3120 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3121 PL_ors_sv = NULL;
7889fe52 3122 }
79072805 3123 if (isDIGIT(*s)) {
53305cf1 3124 I32 flags = 0;
a3b680e6 3125 STRLEN numlen;
396482e1 3126 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3127 numlen = 3 + (*s == '0');
3128 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3129 s += numlen;
3130 }
3131 else {
8bfdd7d9 3132 if (RsPARA(PL_rs)) {
396482e1 3133 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3134 }
3135 else {
8bfdd7d9 3136 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3137 }
79072805
LW
3138 }
3139 return s;
1a30305b 3140 case 'M':
f20b2998 3141 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3142 /* FALL THROUGH */
3143 case 'm':
f20b2998 3144 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3145 if (*++s) {
c7030b81 3146 const char *start;
b64cb68c 3147 const char *end;
11343788 3148 SV *sv;
e1ec3a88 3149 const char *use = "use ";
0544e6df 3150 bool colon = FALSE;
a5f75d66 3151 /* -M-foo == 'no foo' */
d0043bd1
NC
3152 /* Leading space on " no " is deliberate, to make both
3153 possibilities the same length. */
3154 if (*s == '-') { use = " no "; ++s; }
3155 sv = newSVpvn(use,4);
a5f75d66 3156 start = s;
1a30305b 3157 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3158 while(isALNUM(*s) || *s==':') {
3159 if( *s++ == ':' ) {
3160 if( *s == ':' )
3161 s++;
3162 else
3163 colon = TRUE;
3164 }
3165 }
3166 if (s == start)
3167 Perl_croak(aTHX_ "Module name required with -%c option",
3168 option);
3169 if (colon)
3170 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3171 "contains single ':'",
63da6837 3172 (int)(s - start), start, option);
b64cb68c 3173 end = s + strlen(s);
c07a80fd 3174 if (*s != '=') {
b64cb68c 3175 sv_catpvn(sv, start, end - start);
0544e6df 3176 if (option == 'm') {
c07a80fd 3177 if (*s != '\0')
cea2e8a9 3178 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3179 sv_catpvs( sv, " ()");
c07a80fd
PP
3180 }
3181 } else {
11343788 3182 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3183 /* Use NUL as q''-delimiter. */
3184 sv_catpvs(sv, " split(/,/,q\0");
3185 ++s;
3186 sv_catpvn(sv, s, end - s);
396482e1 3187 sv_catpvs(sv, "\0)");
c07a80fd 3188 }
b64cb68c 3189 s = end;
29a861e7 3190 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3191 }
3192 else
0544e6df 3193 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3194 return s;
79072805 3195 case 'n':
3280af22 3196 PL_minus_n = TRUE;
79072805
LW
3197 s++;
3198 return s;
3199 case 'p':
3280af22 3200 PL_minus_p = TRUE;
79072805
LW
3201 s++;
3202 return s;
3203 case 's':
f20b2998 3204 forbid_setid('s', FALSE);
3280af22 3205 PL_doswitches = TRUE;
79072805
LW
3206 s++;
3207 return s;
6537fe72
MS
3208 case 't':
3209 if (!PL_tainting)
22f7c9c9 3210 TOO_LATE_FOR('t');
6537fe72
MS
3211 s++;
3212 return s;
463ee0b2 3213 case 'T':
3280af22 3214 if (!PL_tainting)
22f7c9c9 3215 TOO_LATE_FOR('T');
463ee0b2
LW
3216 s++;
3217 return s;
79072805 3218 case 'u':
3280af22 3219 PL_do_undump = TRUE;
79072805
LW
3220 s++;
3221 return s;
3222 case 'U':
3280af22 3223 PL_unsafe = TRUE;
79072805
LW
3224 s++;
3225 return s;
3226 case 'v':
d7aa5382 3227 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3228 upg_version(PL_patchlevel, TRUE);
8e9464f1 3229#if !defined(DGUX)
46807d8e
YO
3230 {
3231 SV* level= vstringify(PL_patchlevel);
3232#ifdef PERL_PATCHNUM
23d483e2
NC
3233# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3234 SV *num = newSVpvs(PERL_PATCHNUM "*");
3235# else
3236 SV *num = newSVpvs(PERL_PATCHNUM);
3237# endif
46807d8e
YO
3238
3239 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3240 SvREFCNT_dec(level);
3241 level= num;
3242 } else {
d0a9311f 3243 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3244 SvREFCNT_dec(num);
3245 }
3246 #endif
3247 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3248 "\nThis is perl " STRINGIFY(PERL_REVISION)
3249 ", version " STRINGIFY(PERL_VERSION)
3250 ", subversion " STRINGIFY(PERL_SUBVERSION)
3251 " (%"SVf") built for " ARCHNAME, level
3252 );
46807d8e
YO
3253 SvREFCNT_dec(level);
3254 }
8e9464f1
JH
3255#else /* DGUX */
3256/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3257 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3258 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3259 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3260 PerlIO_printf(PerlIO_stdout(),
3261 Perl_form(aTHX_ " built under %s at %s %s\n",
3262 OSNAME, __DATE__, __TIME__));
3263 PerlIO_printf(PerlIO_stdout(),
3264 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3265 OSVERS));
8e9464f1 3266#endif /* !DGUX */
fb73857a
PP
3267#if defined(LOCAL_PATCH_COUNT)
3268 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3269 PerlIO_printf(PerlIO_stdout(),
3270 "\n(with %d registered patch%s, "
3271 "see perl -V for more detail)",
bb7a0f54 3272 LOCAL_PATCH_COUNT,
b0e47665 3273 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3274#endif
1a30305b 3275
b0e47665 3276 PerlIO_printf(PerlIO_stdout(),
32709fdf 3277 "\n\nCopyright 1987-2010, Larry Wall\n");
79072805 3278#ifdef MSDOS
b0e47665
GS
3279 PerlIO_printf(PerlIO_stdout(),
3280 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3281#endif
3282#ifdef DJGPP
b0e47665
GS
3283 PerlIO_printf(PerlIO_stdout(),
3284 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3285 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3286#endif
79072805 3287#ifdef OS2
b0e47665
GS
3288 PerlIO_printf(PerlIO_stdout(),
3289 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3290 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3291#endif
79072805 3292#ifdef atarist
b0e47665
GS
3293 PerlIO_printf(PerlIO_stdout(),
3294 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3295#endif
a3f9223b 3296#ifdef __BEOS__
b0e47665
GS
3297 PerlIO_printf(PerlIO_stdout(),
3298 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3299#endif
1d84e8df 3300#ifdef MPE
b0e47665 3301 PerlIO_printf(PerlIO_stdout(),
e583a879 3302 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3303#endif
9d116dd7 3304#ifdef OEMVS
b0e47665
GS
3305 PerlIO_printf(PerlIO_stdout(),
3306 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3307#endif
495c5fdc 3308#ifdef __VOS__
b0e47665 3309 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3310 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3311#endif
092bebab 3312#ifdef __OPEN_VM
b0e47665
GS
3313 PerlIO_printf(PerlIO_stdout(),
3314 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3315#endif
a1a0e61e 3316#ifdef POSIX_BC
b0e47665
GS
3317 PerlIO_printf(PerlIO_stdout(),
3318 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3319#endif
f83d2536 3320#ifdef EPOC
b0e47665 3321 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3322 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3323#endif
e1caacb4 3324#ifdef UNDER_CE
b475b3e6
JH
3325 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3326 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3327 wce_hitreturn();
3328#endif
a0fd4948 3329#ifdef __SYMBIAN32__
27da23d5
JH
3330 PerlIO_printf(PerlIO_stdout(),
3331 "Symbian port by Nokia, 2004-2005\n");
3332#endif
baed7233
DL
3333#ifdef BINARY_BUILD_NOTICE
3334 BINARY_BUILD_NOTICE;
3335#endif
b0e47665
GS
3336 PerlIO_printf(PerlIO_stdout(),
3337 "\n\
79072805 3338Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3339GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3340Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3341this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3342Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3343 my_exit(0);
79072805 3344 case 'w':
b2e5e6ba 3345 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3346 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3347 }
599cee73
PM
3348 s++;
3349 return s;
3350 case 'W':
ac27b0f5 3351 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3352 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3353 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3354 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3355 s++;
3356 return s;
3357 case 'X':
ac27b0f5 3358 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3359 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3360 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3361 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3362 s++;
3363 return s;
a0d0e21e 3364 case '*':
79072805 3365 case ' ':
d3133c89
NC
3366 while( *s == ' ' )
3367 ++s;
3368 if (s[0] == '-') /* Additional switches on #! line. */
3369 return s+1;
79072805 3370 break;
a0d0e21e 3371 case '-':
79072805 3372 case 0:
51882d45 3373#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3374 case '\r':
3375#endif
79072805
LW
3376 case '\n':
3377 case '\t':
3378 break;
aa689395
PP
3379#ifdef ALTERNATE_SHEBANG
3380 case 'S': /* OS/2 needs -S on "extproc" line. */
3381 break;
3382#endif
79072805 3383 default:
cea2e8a9 3384 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3385 }
bd61b366 3386 return NULL;
79072805
LW
3387}
3388
3389/* compliments of Tom Christiansen */
3390
3391/* unexec() can be found in the Gnu emacs distribution */
ee580363 3392/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3393
3394void
864dbfa3 3395Perl_my_unexec(pTHX)
79072805 3396{
b37c2d43 3397 PERL_UNUSED_CONTEXT;
79072805 3398#ifdef UNEXEC
b37c2d43
AL
3399 SV * prog = newSVpv(BIN_EXP, 0);
3400 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3401 int status = 1;
79072805
LW
3402 extern int etext;
3403
396482e1 3404 sv_catpvs(prog, "/perl");
396482e1 3405 sv_catpvs(file, ".perldump");
79072805 3406
ee580363
GS
3407 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3408 /* unexec prints msg to stderr in case of failure */
6ad3d225 3409 PerlProc_exit(status);
79072805 3410#else
a5f75d66
AD
3411# ifdef VMS
3412# include <lib$routines.h>
3413 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3414# elif defined(WIN32) || defined(__CYGWIN__)
3415 Perl_croak(aTHX_ "dump is not supported");
aa689395 3416# else
79072805 3417 ABORT(); /* for use with undump */
aa689395 3418# endif
a5f75d66 3419#endif
79072805
LW
3420}
3421
cb68f92d
GS
3422/* initialize curinterp */
3423STATIC void
cea2e8a9 3424S_init_interp(pTHX)
cb68f92d 3425{
97aff369 3426 dVAR;
acfe0abc
GS
3427#ifdef MULTIPLICITY
3428# define PERLVAR(var,type)
3429# define PERLVARA(var,n,type)
3430# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3431# define PERLVARI(var,type,init) aTHX->var = init;
3432# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3433# else
acfe0abc
GS
3434# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3435# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3436# endif
acfe0abc 3437# include "intrpvar.h"
acfe0abc
GS
3438# undef PERLVAR
3439# undef PERLVARA
3440# undef PERLVARI
3441# undef PERLVARIC
3442#else
3443# define PERLVAR(var,type)
3444# define PERLVARA(var,n,type)
3445# define PERLVARI(var,type,init) PL_##var = init;
3446# define PERLVARIC(var,type,init) PL_##var = init;
3447# include "intrpvar.h"
acfe0abc
GS
3448# undef PERLVAR
3449# undef PERLVARA
3450# undef PERLVARI
3451# undef PERLVARIC
cb68f92d
GS
3452#endif
3453
46ab3289
NC
3454 /* As these are inside a structure, PERLVARI isn't capable of initialising
3455 them */
6c3f0a89
NC
3456 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3457 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3458}
3459
76e3520e 3460STATIC void
cea2e8a9 3461S_init_main_stash(pTHX)
79072805 3462{
97aff369 3463 dVAR;
463ee0b2 3464 GV *gv;
6e72f9df 3465
3280af22 3466 PL_curstash = PL_defstash = newHV();
23579a14
NC
3467 /* We know that the string "main" will be in the global shared string
3468 table, so it's a small saving to use it rather than allocate another
3469 8 bytes. */
18916d0d 3470 PL_curstname = newSVpvs_share("main");
fafc274c 3471 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3472 /* If we hadn't caused another reference to "main" to be in the shared
3473 string table above, then it would be worth reordering these two,
3474 because otherwise all we do is delete "main" from it as a consequence
3475 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3476 SvREFCNT_dec(GvHV(gv));
23579a14 3477 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3478 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3479 SvREADONLY_on(gv);
fafc274c
NC
3480 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3481 SVt_PVAV)));
5a5094bd 3482 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3483 GvMULTI_on(PL_incgv);
fafc274c 3484 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3485 GvMULTI_on(PL_hintgv);
fafc274c 3486 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3487 SvREFCNT_inc_simple_void(PL_defgv);
fafc274c 3488 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5a5094bd 3489 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3490 GvMULTI_on(PL_errgv);
fafc274c 3491 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22 3492 GvMULTI_on(PL_replgv);
cea2e8a9 3493 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3494#ifdef PERL_DONT_CREATE_GVSV
3495 gv_SVadd(PL_errgv);
3496#endif
38a03e6e 3497