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4b88f280 1#line 2 "perl.c"
a0d0e21e
LW
2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
32709fdf
A
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 by Larry Wall
6 * and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of EƤrendil
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
378cc40b 27#include "EXTERN.h"
864dbfa3 28#define PERL_IN_PERL_C
378cc40b 29#include "perl.h"
e3321bb0 30#include "patchlevel.h" /* for local_patches */
4a5df386 31#include "XSUB.h"
378cc40b 32
011f1a1a
JH
33#ifdef NETWARE
34#include "nwutil.h"
011f1a1a
JH
35#endif
36
df5cef82 37/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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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);
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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;
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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
LW
1073
1074 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1075
1076 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1077 while (sv_clean_all() > 2)
5226ed68
JH
1078 ;
1079
d4777f27
GS
1080 AvREAL_off(PL_fdpid); /* no surviving entries */
1081 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1082 PL_fdpid = NULL;
d33b2eba 1083
6c644e78
GS
1084#ifdef HAVE_INTERP_INTERN
1085 sys_intern_clear();
1086#endif
1087
6e72f9df
PP
1088 /* Destruct the global string table. */
1089 {
1090 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1091 * so that sv_free() won't fail on them.
80459961
NC
1092 * Now that the global string table is using a single hunk of memory
1093 * for both HE and HEK, we either need to explicitly unshare it the
1094 * correct way, or actually free things here.
6e72f9df 1095 */
80459961
NC
1096 I32 riter = 0;
1097 const I32 max = HvMAX(PL_strtab);
c4420975 1098 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1099 HE *hent = array[0];
1100
6e72f9df 1101 for (;;) {
0453d815 1102 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1103 HE * const next = HeNEXT(hent);
9014280d 1104 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1105 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1106 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1107 Safefree(hent);
1108 hent = next;
6e72f9df
PP
1109 }
1110 if (!hent) {
1111 if (++riter > max)
1112 break;
1113 hent = array[riter];
1114 }
1115 }
80459961
NC
1116
1117 Safefree(array);
1118 HvARRAY(PL_strtab) = 0;
1119 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1120 }
3280af22 1121 SvREFCNT_dec(PL_strtab);
6e72f9df 1122
e652bb2f 1123#ifdef USE_ITHREADS
c21d1a0f 1124 /* free the pointer tables used for cloning */
a0739874 1125 ptr_table_free(PL_ptr_table);
bf9cdc68 1126 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1127#endif
a0739874 1128
d33b2eba
GS
1129 /* free special SVs */
1130
1131 SvREFCNT(&PL_sv_yes) = 0;
1132 sv_clear(&PL_sv_yes);
1133 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1134 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1135
1136 SvREFCNT(&PL_sv_no) = 0;
1137 sv_clear(&PL_sv_no);
1138 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1139 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1140
9f375a43
DM
1141 {
1142 int i;
1143 for (i=0; i<=2; i++) {
1144 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1145 sv_clear(PERL_DEBUG_PAD(i));
1146 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1147 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1148 }
1149 }
1150
0453d815 1151 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1152 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1153
eba0f806
DM
1154#ifdef DEBUG_LEAKING_SCALARS
1155 if (PL_sv_count != 0) {
1156 SV* sva;
1157 SV* sv;
1158 register SV* svend;
1159
ad64d0ec 1160 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1161 svend = &sva[SvREFCNT(sva)];
1162 for (sv = sva + 1; sv < svend; ++sv) {
1163 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1164 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1165 " flags=0x%"UVxf
fd0854ff 1166 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1167 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1168 "serial %"UVuf"\n",
574b8821
NC
1169 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1170 pTHX__VALUE,
fd0854ff
DM
1171 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1172 sv->sv_debug_line,
1173 sv->sv_debug_inpad ? "for" : "by",
1174 sv->sv_debug_optype ?
1175 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1176 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1177 sv->sv_debug_serial
fd0854ff 1178 );
2aa47728 1179#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1180 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1181#endif
eba0f806
DM
1182 }
1183 }
1184 }
1185 }
2aa47728
NC
1186#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1187 {
1188 int status;
1189 fd_set rset;
1190 /* Wait for up to 4 seconds for child to terminate.
1191 This seems to be the least effort way of timing out on reaping
1192 its exit status. */
1193 struct timeval waitfor = {4, 0};
41e4abd8 1194 int sock = PL_dumper_fd;
2aa47728
NC
1195
1196 shutdown(sock, 1);
1197 FD_ZERO(&rset);
1198 FD_SET(sock, &rset);
1199 select(sock + 1, &rset, NULL, NULL, &waitfor);
1200 waitpid(child, &status, WNOHANG);
1201 close(sock);
1202 }
1203#endif
eba0f806 1204#endif
77abb4c6
NC
1205#ifdef DEBUG_LEAKING_SCALARS_ABORT
1206 if (PL_sv_count)
1207 abort();
1208#endif
bf9cdc68 1209 PL_sv_count = 0;
eba0f806 1210
f1fac472
NC
1211#ifdef PERL_DEBUG_READONLY_OPS
1212 free(PL_slabs);
1213 PL_slabs = NULL;
1214 PL_slab_count = 0;
1215#endif
eba0f806 1216
56a2bab7 1217#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1218 /* No more IO - including error messages ! */
1219 PerlIO_cleanup(aTHX);
1220#endif
1221
9f4bd222 1222 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1223 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1224 for no arg - and will try and SvREFCNT_dec it.
1225 */
1226 SvREFCNT(&PL_sv_undef) = 0;
1227 SvREADONLY_off(&PL_sv_undef);
1228
3280af22 1229 Safefree(PL_origfilename);
bd61b366 1230 PL_origfilename = NULL;
3280af22 1231 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1232 PL_reg_start_tmp = (char**)NULL;
1233 PL_reg_start_tmpl = 0;
43c5f42d 1234 Safefree(PL_reg_curpm);
82ba1be6 1235 Safefree(PL_reg_poscache);
dd28f7bb 1236 free_tied_hv_pool();
3280af22 1237 Safefree(PL_op_mask);
cf36064f 1238 Safefree(PL_psig_name);
bf9cdc68 1239 PL_psig_name = (SV**)NULL;
d525a7b2 1240 PL_psig_ptr = (SV**)NULL;
ce08f86c 1241 Safefree(PL_psig_pend);
bf9cdc68 1242 PL_psig_pend = (int*)NULL;
31c91b43
LR
1243 {
1244 /* We need to NULL PL_psig_pend first, so that
1245 signal handlers know not to use it */
1246 int *psig_save = PL_psig_pend;
1247 PL_psig_pend = (int*)NULL;
1248 Safefree(psig_save);
1249 }
a0714e2c 1250 PL_formfeed = NULL;
6e72f9df 1251 nuke_stacks();
bf9cdc68
RG
1252 PL_tainting = FALSE;
1253 PL_taint_warn = FALSE;
3280af22 1254 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1255 PL_debug = 0;
ac27b0f5 1256
a0d0e21e 1257 DEBUG_P(debprofdump());
d33b2eba 1258
e5dd39fc 1259#ifdef USE_REENTRANT_API
10bc17b6 1260 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1261#endif
1262
612f20c3
GS
1263 sv_free_arenas();
1264
5d9a96ca
DM
1265 while (PL_regmatch_slab) {
1266 regmatch_slab *s = PL_regmatch_slab;
1267 PL_regmatch_slab = PL_regmatch_slab->next;
1268 Safefree(s);
1269 }
1270
fc36a67e
PP
1271 /* As the absolutely last thing, free the non-arena SV for mess() */
1272
3280af22 1273 if (PL_mess_sv) {
f350b448
NC
1274 /* we know that type == SVt_PVMG */
1275
9c63abab 1276 /* it could have accumulated taint magic */
f350b448
NC
1277 MAGIC* mg;
1278 MAGIC* moremagic;
1279 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1280 moremagic = mg->mg_moremagic;
1281 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1282 && mg->mg_len >= 0)
1283 Safefree(mg->mg_ptr);
1284 Safefree(mg);
9c63abab 1285 }
f350b448 1286
fc36a67e 1287 /* we know that type >= SVt_PV */
8bd4d4c5 1288 SvPV_free(PL_mess_sv);
3280af22
NIS
1289 Safefree(SvANY(PL_mess_sv));
1290 Safefree(PL_mess_sv);
a0714e2c 1291 PL_mess_sv = NULL;
fc36a67e 1292 }
37038d91 1293 return STATUS_EXIT;
79072805
LW
1294}
1295
954c1994
GS
1296/*
1297=for apidoc perl_free
1298
1299Releases a Perl interpreter. See L<perlembed>.
1300
1301=cut
1302*/
1303
79072805 1304void
0cb96387 1305perl_free(pTHXx)
79072805 1306{
5174512c
NC
1307 dVAR;
1308
7918f24d
NC
1309 PERL_ARGS_ASSERT_PERL_FREE;
1310
c301d606
DM
1311 if (PL_veto_cleanup)
1312 return;
1313
7cb608b5 1314#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1315 {
1316 /*
1317 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1318 * value as we're probably hunting memory leaks then
1319 */
1320 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1321 if (!s || atoi(s) == 0) {
4fd0a9b8 1322 const U32 old_debug = PL_debug;
55ef9aae
MHM
1323 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1324 thread at thread exit. */
4fd0a9b8
NC
1325 if (DEBUG_m_TEST) {
1326 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1327 "free this thread's memory\n");
1328 PL_debug &= ~ DEBUG_m_FLAG;
1329 }
55ef9aae
MHM
1330 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1331 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1332 PL_debug = old_debug;
55ef9aae
MHM
1333 }
1334 }
7cb608b5
NC
1335#endif
1336
acfe0abc 1337#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1338# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1339 {
acfe0abc 1340# ifdef NETWARE
7af12a34 1341 void *host = nw_internal_host;
acfe0abc 1342# else
7af12a34 1343 void *host = w32_internal_host;
acfe0abc 1344# endif
7af12a34 1345 PerlMem_free(aTHXx);
acfe0abc 1346# ifdef NETWARE
7af12a34 1347 nw_delete_internal_host(host);
acfe0abc 1348# else
7af12a34 1349 win32_delete_internal_host(host);
acfe0abc 1350# endif
7af12a34 1351 }
1c0ca838
GS
1352# else
1353 PerlMem_free(aTHXx);
1354# endif
acfe0abc
GS
1355#else
1356 PerlMem_free(aTHXx);
76e3520e 1357#endif
79072805
LW
1358}
1359
b7f7fff6 1360#if defined(USE_ITHREADS)
aebd1ac7
GA
1361/* provide destructors to clean up the thread key when libperl is unloaded */
1362#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1363
826955bd 1364#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1365#pragma fini "perl_fini"
666ad1ec
GA
1366#elif defined(__sun) && !defined(__GNUC__)
1367#pragma fini (perl_fini)
aebd1ac7
GA
1368#endif
1369
0dbb1585
AL
1370static void
1371#if defined(__GNUC__)
1372__attribute__((destructor))
aebd1ac7 1373#endif
de009b76 1374perl_fini(void)
aebd1ac7 1375{
27da23d5 1376 dVAR;
c301d606 1377 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1378 FREE_THREAD_KEY;
1379}
1380
1381#endif /* WIN32 */
1382#endif /* THREADS */
1383
4b556e6c 1384void
864dbfa3 1385Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1386{
97aff369 1387 dVAR;
3280af22
NIS
1388 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1389 PL_exitlist[PL_exitlistlen].fn = fn;
1390 PL_exitlist[PL_exitlistlen].ptr = ptr;
1391 ++PL_exitlistlen;
4b556e6c
JD
1392}
1393
56cf6df8
RGS
1394#ifdef HAS_PROCSELFEXE
1395/* This is a function so that we don't hold on to MAXPATHLEN
1396 bytes of stack longer than necessary
1397 */
1398STATIC void
e1ec3a88 1399S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1400{
1401 char buf[MAXPATHLEN];
1402 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1403
1404 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1405 includes a spurious NUL which will cause $^X to fail in system
1406 or backticks (this will prevent extensions from being built and
1407 many tests from working). readlink is not meant to add a NUL.
1408 Normal readlink works fine.
1409 */
1410 if (len > 0 && buf[len-1] == '\0') {
1411 len--;
1412 }
1413
1414 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1415 returning the text "unknown" from the readlink rather than the path
1416 to the executable (or returning an error from the readlink). Any valid
1417 path has a '/' in it somewhere, so use that to validate the result.
1418 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1419 */
1420 if (len > 0 && memchr(buf, '/', len)) {
1421 sv_setpvn(sv,buf,len);
1422 }
1423 else {
1424 sv_setpv(sv,arg0);
1425 }
1426}
1427#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1428
1429STATIC void
1430S_set_caret_X(pTHX) {
97aff369 1431 dVAR;
fafc274c 1432 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1433 if (tmpgv) {
1434#ifdef HAS_PROCSELFEXE
1435 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1436#else
1437#ifdef OS2
c69033f2 1438 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1439#else
c69033f2 1440 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1441#endif
1442#endif
1443 }
1444}
1445
954c1994
GS
1446/*
1447=for apidoc perl_parse
1448
1449Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1450
1451=cut
1452*/
1453
79072805 1454int
0cb96387 1455perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1456{
27da23d5 1457 dVAR;
6224f72b 1458 I32 oldscope;
6224f72b 1459 int ret;
db36c5a1 1460 dJMPENV;
8d063cd8 1461
7918f24d
NC
1462 PERL_ARGS_ASSERT_PERL_PARSE;
1463#ifndef MULTIPLICITY
ed6c66dd 1464 PERL_UNUSED_ARG(my_perl);
7918f24d 1465#endif
9d4ba2ae 1466
b0891165
JH
1467#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1468 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1469 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1470 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1471 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1472 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1473 if (!PL_rehash_seed_set)
1474 PL_rehash_seed = get_hash_seed();
b0891165 1475 {
9d4ba2ae 1476 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1477
1b6737cc
AL
1478 if (s && (atoi(s) == 1))
1479 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1480 }
1481#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1482
3280af22 1483 PL_origargc = argc;
e2975953 1484 PL_origargv = argv;
a0d0e21e 1485
a2722ac9
GA
1486 if (PL_origalen != 0) {
1487 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1488 }
1489 else {
3cb9023d
JH
1490 /* Set PL_origalen be the sum of the contiguous argv[]
1491 * elements plus the size of the env in case that it is
e9137a8e 1492 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1493 * as the maximum modifiable length of $0. In the worst case
1494 * the area we are able to modify is limited to the size of
43c32782 1495 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1496 * --jhi */
e1ec3a88 1497 const char *s = NULL;
54bfe034 1498 int i;
1b6737cc 1499 const UV mask =
7d8e7db3 1500 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1501 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1502 const UV aligned =
43c32782
JH
1503 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1504
1505 /* See if all the arguments are contiguous in memory. Note
1506 * that 'contiguous' is a loose term because some platforms
1507 * align the argv[] and the envp[]. If the arguments look
1508 * like non-aligned, assume that they are 'strictly' or
1509 * 'traditionally' contiguous. If the arguments look like
1510 * aligned, we just check that they are within aligned
1511 * PTRSIZE bytes. As long as no system has something bizarre
1512 * like the argv[] interleaved with some other data, we are
1513 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1514 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1515 while (*s) s++;
1516 for (i = 1; i < PL_origargc; i++) {
1517 if ((PL_origargv[i] == s + 1
43c32782 1518#ifdef OS2
c8941eeb 1519 || PL_origargv[i] == s + 2
43c32782 1520#endif
c8941eeb
JH
1521 )
1522 ||
1523 (aligned &&
1524 (PL_origargv[i] > s &&
1525 PL_origargv[i] <=
1526 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1527 )
1528 {
1529 s = PL_origargv[i];
1530 while (*s) s++;
1531 }
1532 else
1533 break;
54bfe034 1534 }
54bfe034 1535 }
a4a109c2
JD
1536
1537#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1538 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1539 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1540 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1541 ||
1542 (aligned &&
1543 (PL_origenviron[0] > s &&
1544 PL_origenviron[0] <=
1545 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1546 )
1547 {
9d419b5f 1548#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1549 s = PL_origenviron[0];
1550 while (*s) s++;
1551#endif
bd61b366 1552 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1553 /* Force copy of environment. */
1554 for (i = 1; PL_origenviron[i]; i++) {
1555 if (PL_origenviron[i] == s + 1
1556 ||
1557 (aligned &&
1558 (PL_origenviron[i] > s &&
1559 PL_origenviron[i] <=
1560 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1561 )
1562 {
1563 s = PL_origenviron[i];
1564 while (*s) s++;
1565 }
1566 else
1567 break;
54bfe034 1568 }
43c32782 1569 }
54bfe034 1570 }
a4a109c2
JD
1571#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1572
2d2af554 1573 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1574 }
1575
3280af22 1576 if (PL_do_undump) {
a0d0e21e
LW
1577
1578 /* Come here if running an undumped a.out. */
1579
3280af22
NIS
1580 PL_origfilename = savepv(argv[0]);
1581 PL_do_undump = FALSE;
a0d0e21e 1582 cxstack_ix = -1; /* start label stack again */
748a9306 1583 init_ids();
b7975bdd
NC
1584 assert (!PL_tainted);
1585 TAINT;
1586 S_set_caret_X(aTHX);
1587 TAINT_NOT;
a0d0e21e
LW
1588 init_postdump_symbols(argc,argv,env);
1589 return 0;
1590 }
1591
3280af22 1592 if (PL_main_root) {
3280af22 1593 op_free(PL_main_root);
5f66b61c 1594 PL_main_root = NULL;
ff0cee69 1595 }
5f66b61c 1596 PL_main_start = NULL;
3280af22 1597 SvREFCNT_dec(PL_main_cv);
601f1833 1598 PL_main_cv = NULL;
79072805 1599
3280af22
NIS
1600 time(&PL_basetime);
1601 oldscope = PL_scopestack_ix;
599cee73 1602 PL_dowarn = G_WARN_OFF;
f86702cc 1603
14dd3ad8 1604 JMPENV_PUSH(ret);
6224f72b 1605 switch (ret) {
312caa8e 1606 case 0:
14dd3ad8 1607 parse_body(env,xsinit);
3c10abe3
AG
1608 if (PL_unitcheckav)
1609 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1610 if (PL_checkav)
1611 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1612 ret = 0;
1613 break;
6224f72b
GS
1614 case 1:
1615 STATUS_ALL_FAILURE;
1616 /* FALL THROUGH */
1617 case 2:
1618 /* my_exit() was called */
3280af22 1619 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1620 LEAVE;
1621 FREETMPS;
3280af22 1622 PL_curstash = PL_defstash;
3c10abe3
AG
1623 if (PL_unitcheckav)
1624 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1625 if (PL_checkav)
1626 call_list(oldscope, PL_checkav);
37038d91 1627 ret = STATUS_EXIT;
14dd3ad8 1628 break;
6224f72b 1629 case 3:
bf49b057 1630 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1631 ret = 1;
1632 break;
6224f72b 1633 }
14dd3ad8
GS
1634 JMPENV_POP;
1635 return ret;
1636}
1637
4a5df386
NC
1638/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1639 miniperl, and we need to see those flags reflected in the values here. */
1640
1641/* What this returns is subject to change. Use the public interface in Config.
1642 */
1643static void
1644S_Internals_V(pTHX_ CV *cv)
1645{
1646 dXSARGS;
1647#ifdef LOCAL_PATCH_COUNT
1648 const int local_patch_count = LOCAL_PATCH_COUNT;
1649#else
1650 const int local_patch_count = 0;
1651#endif
2dc296d2 1652 const int entries = 3 + local_patch_count;
4a5df386
NC
1653 int i;
1654 static char non_bincompat_options[] =
1655# ifdef DEBUGGING
1656 " DEBUGGING"
1657# endif
1658# ifdef NO_MATHOMS
0d311fbe 1659 " NO_MATHOMS"
4a5df386
NC
1660# endif
1661# ifdef PERL_DISABLE_PMC
1662 " PERL_DISABLE_PMC"
1663# endif
1664# ifdef PERL_DONT_CREATE_GVSV
1665 " PERL_DONT_CREATE_GVSV"
1666# endif
9a044a43
NC
1667# ifdef PERL_EXTERNAL_GLOB
1668 " PERL_EXTERNAL_GLOB"
1669# endif
4a5df386
NC
1670# ifdef PERL_IS_MINIPERL
1671 " PERL_IS_MINIPERL"
1672# endif
1673# ifdef PERL_MALLOC_WRAP
1674 " PERL_MALLOC_WRAP"
1675# endif
1676# ifdef PERL_MEM_LOG
1677 " PERL_MEM_LOG"
1678# endif
1679# ifdef PERL_MEM_LOG_NOIMPL
1680 " PERL_MEM_LOG_NOIMPL"
1681# endif
1682# ifdef PERL_USE_DEVEL
1683 " PERL_USE_DEVEL"
1684# endif
1685# ifdef PERL_USE_SAFE_PUTENV
1686 " PERL_USE_SAFE_PUTENV"
1687# endif
de618ee4
NC
1688# ifdef USE_ATTRIBUTES_FOR_PERLIO
1689 " USE_ATTRIBUTES_FOR_PERLIO"
1690# endif
4a5df386
NC
1691# ifdef USE_FAST_STDIO
1692 " USE_FAST_STDIO"
1693# endif
5a8d8935
NC
1694# ifdef USE_PERL_ATOF
1695 " USE_PERL_ATOF"
1696# endif
0d311fbe
NC
1697# ifdef USE_SITECUSTOMIZE
1698 " USE_SITECUSTOMIZE"
1699# endif
4a5df386
NC
1700 ;
1701 PERL_UNUSED_ARG(cv);
1702 PERL_UNUSED_ARG(items);
1703
1704 EXTEND(SP, entries);
1705
1706 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1707 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1708 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1709
1710#ifdef __DATE__
1711# ifdef __TIME__
1712 PUSHs(Perl_newSVpvn_flags(aTHX_
1713 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1714 SVs_TEMP));
1715# else
1716 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1717 SVs_TEMP));
1718# endif
1719#else
1720 PUSHs(&PL_sv_undef);
1721#endif
1722
4a5df386
NC
1723 for (i = 1; i <= local_patch_count; i++) {
1724 /* This will be an undef, if PL_localpatches[i] is NULL. */
1725 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1726 }
1727
1728 XSRETURN(entries);
1729}
1730
be71fc8f
NC
1731#define INCPUSH_UNSHIFT 0x01
1732#define INCPUSH_ADD_OLD_VERS 0x02
1733#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1734#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1735#define INCPUSH_NOT_BASEDIR 0x10
1736#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1737#define INCPUSH_ADD_SUB_DIRS \
1738 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1739
312caa8e 1740STATIC void *
14dd3ad8 1741S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1742{
27da23d5 1743 dVAR;
2f9285f8 1744 PerlIO *rsfp;
312caa8e 1745 int argc = PL_origargc;
8f42b153 1746 char **argv = PL_origargv;
e1ec3a88 1747 const char *scriptname = NULL;
312caa8e 1748 VOL bool dosearch = FALSE;
c7030b81 1749 register char c;
bd61b366 1750 const char *cddir = NULL;
ab019eaa 1751#ifdef USE_SITECUSTOMIZE
20ef40cf 1752 bool minus_f = FALSE;
ab019eaa 1753#endif
009d90df 1754 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1755 bool add_read_e_script = FALSE;
009d90df
DM
1756
1757 SvGROW(linestr_sv, 80);
76f68e9b 1758 sv_setpvs(linestr_sv,"");
312caa8e 1759
6224f72b 1760 init_main_stash();
54310121 1761
c7030b81
NC
1762 {
1763 const char *s;
6224f72b
GS
1764 for (argc--,argv++; argc > 0; argc--,argv++) {
1765 if (argv[0][0] != '-' || !argv[0][1])
1766 break;
6224f72b
GS
1767 s = argv[0]+1;
1768 reswitch:
47f56822 1769 switch ((c = *s)) {
729a02f2 1770 case 'C':
1d5472a9
GS
1771#ifndef PERL_STRICT_CR
1772 case '\r':
1773#endif
6224f72b
GS
1774 case ' ':
1775 case '0':
1776 case 'F':
1777 case 'a':
1778 case 'c':
1779 case 'd':
1780 case 'D':
1781 case 'h':
1782 case 'i':
1783 case 'l':
1784 case 'M':
1785 case 'm':
1786 case 'n':
1787 case 'p':
1788 case 's':
1789 case 'u':
1790 case 'U':
1791 case 'v':
599cee73
PM
1792 case 'W':
1793 case 'X':
6224f72b 1794 case 'w':
97bd5664 1795 if ((s = moreswitches(s)))
6224f72b
GS
1796 goto reswitch;
1797 break;
33b78306 1798
1dbad523 1799 case 't':
22f7c9c9 1800 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1801 if( !PL_tainting ) {
1802 PL_taint_warn = TRUE;
1803 PL_tainting = TRUE;
1804 }
1805 s++;
1806 goto reswitch;
6224f72b 1807 case 'T':
22f7c9c9 1808 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1809 PL_tainting = TRUE;
317ea90d 1810 PL_taint_warn = FALSE;
6224f72b
GS
1811 s++;
1812 goto reswitch;
f86702cc 1813
bc9b29db
RH
1814 case 'E':
1815 PL_minus_E = TRUE;
1816 /* FALL THROUGH */
6224f72b 1817 case 'e':
f20b2998 1818 forbid_setid('e', FALSE);
3280af22 1819 if (!PL_e_script) {
396482e1 1820 PL_e_script = newSVpvs("");
5486870f 1821 add_read_e_script = TRUE;
6224f72b
GS
1822 }
1823 if (*++s)
3280af22 1824 sv_catpv(PL_e_script, s);
6224f72b 1825 else if (argv[1]) {
3280af22 1826 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1827 argc--,argv++;
1828 }
1829 else
47f56822 1830 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1831 sv_catpvs(PL_e_script, "\n");
6224f72b 1832 break;
afe37c7d 1833
20ef40cf 1834 case 'f':
f5542d3a 1835#ifdef USE_SITECUSTOMIZE
20ef40cf 1836 minus_f = TRUE;
f5542d3a 1837#endif
20ef40cf
GA
1838 s++;
1839 goto reswitch;
1840
6224f72b 1841 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1842 forbid_setid('I', FALSE);
bd61b366 1843 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1844 argc--,argv++;
1845 }
6224f72b 1846 if (s && *s) {
0df16ed7 1847 STRLEN len = strlen(s);
55b4bc1c 1848 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1849 }
1850 else
a67e862a 1851 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1852 break;
6224f72b 1853 case 'S':
f20b2998 1854 forbid_setid('S', FALSE);
6224f72b
GS
1855 dosearch = TRUE;
1856 s++;
1857 goto reswitch;
1858 case 'V':
7edfd0ef
NC
1859 {
1860 SV *opts_prog;
1861
7edfd0ef 1862 if (*++s != ':') {
37ca4a5b 1863 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1864 }
1865 else {
1866 ++s;
1867 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1868 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1869 0, s, 0);
1870 s += strlen(s);
1871 }
37ca4a5b 1872 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1873 /* don't look for script or read stdin */
1874 scriptname = BIT_BUCKET;
1875 goto reswitch;
6224f72b 1876 }
6224f72b 1877 case 'x':
3280af22 1878 PL_doextract = TRUE;
6224f72b 1879 s++;
304334da 1880 if (*s)
f4c556ac 1881 cddir = s;
6224f72b
GS
1882 break;
1883 case 0:
1884 break;
1885 case '-':
1886 if (!*++s || isSPACE(*s)) {
1887 argc--,argv++;
1888 goto switch_end;
1889 }
1890 /* catch use of gnu style long options */
1891 if (strEQ(s, "version")) {
dd374669 1892 s = (char *)"v";
6224f72b
GS
1893 goto reswitch;
1894 }
1895 if (strEQ(s, "help")) {
dd374669 1896 s = (char *)"h";
6224f72b
GS
1897 goto reswitch;
1898 }
1899 s--;
1900 /* FALL THROUGH */
1901 default:
cea2e8a9 1902 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1903 }
1904 }
c7030b81
NC
1905 }
1906
6224f72b 1907 switch_end:
54310121 1908
c7030b81
NC
1909 {
1910 char *s;
1911
f675dbe5
CB
1912 if (
1913#ifndef SECURE_INTERNAL_GETENV
1914 !PL_tainting &&
1915#endif
cf756827 1916 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1917 {
74288ac8
GS
1918 while (isSPACE(*s))
1919 s++;
317ea90d 1920 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1921 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1922 PL_tainting = TRUE;
317ea90d
MS
1923 PL_taint_warn = FALSE;
1924 }
74288ac8 1925 else {
bd61b366 1926 char *popt_copy = NULL;
74288ac8 1927 while (s && *s) {
54913509 1928 const char *d;
74288ac8
GS
1929 while (isSPACE(*s))
1930 s++;
1931 if (*s == '-') {
1932 s++;
1933 if (isSPACE(*s))
1934 continue;
1935 }
4ea8f8fb 1936 d = s;
74288ac8
GS
1937 if (!*s)
1938 break;
2b622f1a 1939 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1940 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1941 while (++s && *s) {
1942 if (isSPACE(*s)) {
cf756827 1943 if (!popt_copy) {
bfa6c418
NC
1944 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1945 s = popt_copy + (s - d);
1946 d = popt_copy;
cf756827 1947 }
4ea8f8fb
MS
1948 *s++ = '\0';
1949 break;
1950 }
1951 }
1c4db469 1952 if (*d == 't') {
317ea90d
MS
1953 if( !PL_tainting ) {
1954 PL_taint_warn = TRUE;
1955 PL_tainting = TRUE;
1956 }
1c4db469 1957 } else {
97bd5664 1958 moreswitches(d);
1c4db469 1959 }
6224f72b 1960 }
6224f72b
GS
1961 }
1962 }
c7030b81 1963 }
a0d0e21e 1964
87e06404 1965#if defined(USE_SITECUSTOMIZE) && !defined(PERL_IS_MINIPERL)
20ef40cf 1966 if (!minus_f) {
404ad9dc
NC
1967 /* SITELIB_EXP is a function call on Win32.
1968 The games with local $! are to avoid setting errno if there is no
1969 sitecustomize script. */
1970 const char *const sitelib = SITELIB_EXP;
29a861e7 1971 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1972 Perl_newSVpvf(aTHX_
1973 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
20ef40cf
GA
1974 }
1975#endif
1976
6224f72b
GS
1977 if (!scriptname)
1978 scriptname = argv[0];
3280af22 1979 if (PL_e_script) {
6224f72b
GS
1980 argc++,argv--;
1981 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1982 }
bd61b366 1983 else if (scriptname == NULL) {
6224f72b
GS
1984#ifdef MSDOS
1985 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1986 moreswitches("h");
6224f72b
GS
1987#endif
1988 scriptname = "-";
1989 }
1990
b7975bdd
NC
1991 /* Set $^X early so that it can be used for relocatable paths in @INC */
1992 assert (!PL_tainted);
1993 TAINT;
1994 S_set_caret_X(aTHX);
1995 TAINT_NOT;
2cace6ac 1996 init_perllib();
6224f72b 1997
a52eba0e 1998 {
f20b2998 1999 bool suidscript = FALSE;
829372d3 2000
cc69b689 2001 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2002
2f9285f8 2003 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2004 linestr_sv, rsfp);
6224f72b 2005
64ca3a65 2006#ifndef PERL_MICRO
a52eba0e
NC
2007# if defined(SIGCHLD) || defined(SIGCLD)
2008 {
2009# ifndef SIGCHLD
2010# define SIGCHLD SIGCLD
2011# endif
2012 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2013 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2014 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2015 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2016 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2017 }
0b5b802d 2018 }
a52eba0e 2019# endif
64ca3a65 2020#endif
0b5b802d 2021
e37778c2 2022 if (PL_doextract) {
faef540c 2023
f20b2998 2024 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2025 setuid scripts. */
2026 forbid_setid('x', suidscript);
f20b2998 2027 /* Hence you can't get here if suidscript is true */
faef540c 2028
2f9285f8 2029 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2030 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2031 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2032 }
f4c556ac 2033 }
6224f72b 2034
ea726b52 2035 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2036 CvUNIQUE_on(PL_compcv);
2037
dd2155a4 2038 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2039
dd69841b
BB
2040 PL_isarev = newHV();
2041
0c4f7ff0 2042 boot_core_PerlIO();
6224f72b 2043 boot_core_UNIVERSAL();
e1a479c5 2044 boot_core_mro();
4a5df386 2045 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2046
2047 if (xsinit)
acfe0abc 2048 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2049#ifndef PERL_MICRO
d0d72822 2050#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2051 init_os_extras();
6224f72b 2052#endif
64ca3a65 2053#endif
6224f72b 2054
29209bc5 2055#ifdef USE_SOCKS
1b9c9cf5
DH
2056# ifdef HAS_SOCKS5_INIT
2057 socks5_init(argv[0]);
2058# else
29209bc5 2059 SOCKSinit(argv[0]);
1b9c9cf5 2060# endif
ac27b0f5 2061#endif
29209bc5 2062
6224f72b
GS
2063 init_predump_symbols();
2064 /* init_postdump_symbols not currently designed to be called */
2065 /* more than once (ENV isn't cleared first, for example) */
2066 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2067 if (!PL_do_undump)
6224f72b
GS
2068 init_postdump_symbols(argc,argv,env);
2069
27da23d5
JH
2070 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2071 * or explicitly in some platforms.
085a54d9 2072 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2073 * look like the user wants to use UTF-8. */
a0fd4948 2074#if defined(__SYMBIAN32__)
27da23d5
JH
2075 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2076#endif
e27b5b51 2077# ifndef PERL_IS_MINIPERL
06e66572
JH
2078 if (PL_unicode) {
2079 /* Requires init_predump_symbols(). */
a05d7ebb 2080 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2081 IO* io;
2082 PerlIO* fp;
2083 SV* sv;
2084
a05d7ebb 2085 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2086 * and the default open disciplines. */
a05d7ebb
JH
2087 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2088 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2089 (fp = IoIFP(io)))
2090 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2091 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2092 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2093 (fp = IoOFP(io)))
2094 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2095 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2096 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2097 (fp = IoOFP(io)))
2098 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2099 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2100 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2101 SVt_PV)))) {
a05d7ebb
JH
2102 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2103 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2104 if (in) {
2105 if (out)
76f68e9b 2106 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2107 else
76f68e9b 2108 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2109 }
2110 else if (out)
76f68e9b 2111 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2112 SvSETMAGIC(sv);
2113 }
b310b053
JH
2114 }
2115 }
e27b5b51 2116#endif
b310b053 2117
c7030b81
NC
2118 {
2119 const char *s;
4ffa73a3
JH
2120 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2121 if (strEQ(s, "unsafe"))
2122 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2123 else if (strEQ(s, "safe"))
2124 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2125 else
2126 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2127 }
c7030b81 2128 }
4ffa73a3 2129
81d86705 2130#ifdef PERL_MAD
c7030b81
NC
2131 {
2132 const char *s;
81d86705
NC
2133 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2134 PL_madskills = 1;
2135 PL_minus_c = 1;
2136 if (!s || !s[0])
2137 PL_xmlfp = PerlIO_stdout();
2138 else {
2139 PL_xmlfp = PerlIO_open(s, "w");
2140 if (!PL_xmlfp)
2141 Perl_croak(aTHX_ "Can't open %s", s);
2142 }
1a9a51d4 2143 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2144 }
c7030b81
NC
2145 }
2146
2147 {
2148 const char *s;
81d86705
NC
2149 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2150 PL_madskills = atoi(s);
1a9a51d4 2151 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2152 }
c7030b81 2153 }
81d86705
NC
2154#endif
2155
5486870f 2156 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2157 PL_subname = newSVpvs("main");
6224f72b 2158
5486870f
DM
2159 if (add_read_e_script)
2160 filter_add(read_e_script, NULL);
2161
6224f72b
GS
2162 /* now parse the script */
2163
93189314 2164 SETERRNO(0,SS_NORMAL);
13765c85 2165 if (yyparse() || PL_parser->error_count) {
3280af22 2166 if (PL_minus_c)
cea2e8a9 2167 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2168 else {
cea2e8a9 2169 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2170 PL_origfilename);
6224f72b
GS
2171 }
2172 }
57843af0 2173 CopLINE_set(PL_curcop, 0);
3280af22 2174 PL_curstash = PL_defstash;
3280af22
NIS
2175 if (PL_e_script) {
2176 SvREFCNT_dec(PL_e_script);
a0714e2c 2177 PL_e_script = NULL;
6224f72b
GS
2178 }
2179
3280af22 2180 if (PL_do_undump)
6224f72b
GS
2181 my_unexec();
2182
57843af0
GS
2183 if (isWARN_ONCE) {
2184 SAVECOPFILE(PL_curcop);
2185 SAVECOPLINE(PL_curcop);
3280af22 2186 gv_check(PL_defstash);
57843af0 2187 }
6224f72b
GS
2188
2189 LEAVE;
2190 FREETMPS;
2191
2192#ifdef MYMALLOC
f6a607bc
RGS
2193 {
2194 const char *s;
6224f72b
GS
2195 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2196 dump_mstats("after compilation:");
f6a607bc 2197 }
6224f72b
GS
2198#endif
2199
2200 ENTER;
febb3a6d 2201 PL_restartjmpenv = NULL;
3280af22 2202 PL_restartop = 0;
312caa8e 2203 return NULL;
6224f72b
GS
2204}
2205
954c1994
GS
2206/*
2207=for apidoc perl_run
2208
2209Tells a Perl interpreter to run. See L<perlembed>.
2210
2211=cut
2212*/
2213
6224f72b 2214int
0cb96387 2215perl_run(pTHXx)
6224f72b 2216{
97aff369 2217 dVAR;
6224f72b 2218 I32 oldscope;
14dd3ad8 2219 int ret = 0;
db36c5a1 2220 dJMPENV;
6224f72b 2221
7918f24d
NC
2222 PERL_ARGS_ASSERT_PERL_RUN;
2223#ifndef MULTIPLICITY
ed6c66dd 2224 PERL_UNUSED_ARG(my_perl);
7918f24d 2225#endif
9d4ba2ae 2226
3280af22 2227 oldscope = PL_scopestack_ix;
96e176bf
CL
2228#ifdef VMS
2229 VMSISH_HUSHED = 0;
2230#endif
6224f72b 2231
14dd3ad8 2232 JMPENV_PUSH(ret);
6224f72b
GS
2233 switch (ret) {
2234 case 1:
2235 cxstack_ix = -1; /* start context stack again */
312caa8e 2236 goto redo_body;
14dd3ad8 2237 case 0: /* normal completion */
14dd3ad8
GS
2238 redo_body:
2239 run_body(oldscope);
14dd3ad8
GS
2240 /* FALL THROUGH */
2241 case 2: /* my_exit() */
3280af22 2242 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2243 LEAVE;
2244 FREETMPS;
3280af22 2245 PL_curstash = PL_defstash;
3a1ee7e8 2246 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2247 PL_endav && !PL_minus_c)
2248 call_list(oldscope, PL_endav);
6224f72b
GS
2249#ifdef MYMALLOC
2250 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2251 dump_mstats("after execution: ");
2252#endif
37038d91 2253 ret = STATUS_EXIT;
14dd3ad8 2254 break;
6224f72b 2255 case 3:
312caa8e
CS
2256 if (PL_restartop) {
2257 POPSTACK_TO(PL_mainstack);
2258 goto redo_body;
6224f72b 2259 }
bf49b057 2260 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2261 FREETMPS;
14dd3ad8
GS
2262 ret = 1;
2263 break;
6224f72b
GS
2264 }
2265
14dd3ad8
GS
2266 JMPENV_POP;
2267 return ret;
312caa8e
CS
2268}
2269
dd374669 2270STATIC void
14dd3ad8
GS
2271S_run_body(pTHX_ I32 oldscope)
2272{
97aff369 2273 dVAR;
6224f72b 2274 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2275 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2276
3280af22 2277 if (!PL_restartop) {
81d86705
NC
2278#ifdef PERL_MAD
2279 if (PL_xmlfp) {
2280 xmldump_all();
2281 exit(0); /* less likely to core dump than my_exit(0) */
2282 }
2283#endif
cf2782cd 2284#ifdef DEBUGGING
f0e3f042
CS
2285 if (DEBUG_x_TEST || DEBUG_B_TEST)
2286 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2287 if (!DEBUG_q_TEST)
2288 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2289#endif
6224f72b 2290
3280af22 2291 if (PL_minus_c) {
bf49b057 2292 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2293 my_exit(0);
2294 }
3280af22 2295 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2296 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2297 if (PL_initav)
2298 call_list(oldscope, PL_initav);
f1fac472
NC
2299#ifdef PERL_DEBUG_READONLY_OPS
2300 Perl_pending_Slabs_to_ro(aTHX);
2301#endif
6224f72b
GS
2302 }
2303
2304 /* do it */
2305
3280af22 2306 if (PL_restartop) {
febb3a6d 2307 PL_restartjmpenv = NULL;
533c011a 2308 PL_op = PL_restartop;
3280af22 2309 PL_restartop = 0;
cea2e8a9 2310 CALLRUNOPS(aTHX);
6224f72b 2311 }
3280af22
NIS
2312 else if (PL_main_start) {
2313 CvDEPTH(PL_main_cv) = 1;
533c011a 2314 PL_op = PL_main_start;
cea2e8a9 2315 CALLRUNOPS(aTHX);
6224f72b 2316 }
f6b3007c
JH
2317 my_exit(0);
2318 /* NOTREACHED */
6224f72b
GS
2319}
2320
954c1994 2321/*
ccfc67b7
JH
2322=head1 SV Manipulation Functions
2323
954c1994
GS
2324=for apidoc p||get_sv
2325
64ace3f8
NC
2326Returns the SV of the specified Perl scalar. C<flags> are passed to
2327C<gv_fetchpv>. If C<GV_ADD> is set and the
2328Perl variable does not exist then it will be created. If C<flags> is zero
2329and the variable does not exist then NULL is returned.
954c1994
GS
2330
2331=cut
2332*/
2333
6224f72b 2334SV*
64ace3f8 2335Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2336{
2337 GV *gv;
7918f24d
NC
2338
2339 PERL_ARGS_ASSERT_GET_SV;
2340
64ace3f8 2341 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2342 if (gv)
2343 return GvSV(gv);
a0714e2c 2344 return NULL;
6224f72b
GS
2345}
2346
954c1994 2347/*
ccfc67b7
JH
2348=head1 Array Manipulation Functions
2349
954c1994
GS
2350=for apidoc p||get_av
2351
cbfd0a87
NC
2352Returns the AV of the specified Perl array. C<flags> are passed to
2353C<gv_fetchpv>. If C<GV_ADD> is set and the
2354Perl variable does not exist then it will be created. If C<flags> is zero
2355and the variable does not exist then NULL is returned.
954c1994
GS
2356
2357=cut
2358*/
2359
6224f72b 2360AV*
cbfd0a87 2361Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2362{
cbfd0a87 2363 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2364
2365 PERL_ARGS_ASSERT_GET_AV;
2366
cbfd0a87 2367 if (flags)
6224f72b
GS
2368 return GvAVn(gv);
2369 if (gv)
2370 return GvAV(gv);
7d49f689 2371 return NULL;
6224f72b
GS
2372}
2373
954c1994 2374/*
ccfc67b7
JH
2375=head1 Hash Manipulation Functions
2376
954c1994
GS
2377=for apidoc p||get_hv
2378
6673a63c
NC
2379Returns the HV of the specified Perl hash. C<flags> are passed to
2380C<gv_fetchpv>. If C<GV_ADD> is set and the
2381Perl variable does not exist then it will be created. If C<flags> is zero
2382and the variable does not exist then NULL is returned.
954c1994
GS
2383
2384=cut
2385*/
2386
6224f72b 2387HV*
6673a63c 2388Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2389{
6673a63c 2390 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2391
2392 PERL_ARGS_ASSERT_GET_HV;
2393
6673a63c 2394 if (flags)
a0d0e21e
LW
2395 return GvHVn(gv);
2396 if (gv)
2397 return GvHV(gv);
5c284bb0 2398 return NULL;
a0d0e21e
LW
2399}
2400
954c1994 2401/*
ccfc67b7
JH
2402=head1 CV Manipulation Functions
2403
780a5241
NC
2404=for apidoc p||get_cvn_flags
2405
2406Returns the CV of the specified Perl subroutine. C<flags> are passed to
2407C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2408exist then it will be declared (which has the same effect as saying
2409C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2410then NULL is returned.
2411
954c1994
GS
2412=for apidoc p||get_cv
2413
780a5241 2414Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2415
2416=cut
2417*/
2418
a0d0e21e 2419CV*
780a5241 2420Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2421{
780a5241 2422 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2423 /* XXX this is probably not what they think they're getting.
2424 * It has the same effect as "sub name;", i.e. just a forward
2425 * declaration! */
7918f24d
NC
2426
2427 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2428
780a5241 2429 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2430 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2431 return newSUB(start_subparse(FALSE, 0),
780a5241 2432 newSVOP(OP_CONST, 0, sv),
5f66b61c 2433 NULL, NULL);
780a5241 2434 }
a0d0e21e 2435 if (gv)
8ebc5c01 2436 return GvCVu(gv);
601f1833 2437 return NULL;
a0d0e21e
LW
2438}
2439
2c67934f
NC
2440/* Nothing in core calls this now, but we can't replace it with a macro and
2441 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2442CV*
2443Perl_get_cv(pTHX_ const char *name, I32 flags)
2444{
7918f24d
NC
2445 PERL_ARGS_ASSERT_GET_CV;
2446
780a5241
NC
2447 return get_cvn_flags(name, strlen(name), flags);
2448}
2449
79072805
LW
2450/* Be sure to refetch the stack pointer after calling these routines. */
2451
954c1994 2452/*
ccfc67b7
JH
2453
2454=head1 Callback Functions
2455
954c1994
GS
2456=for apidoc p||call_argv
2457
2458Performs a callback to the specified Perl sub. See L<perlcall>.
2459
2460=cut
2461*/
2462
a0d0e21e 2463I32
8f42b153 2464Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2465
8ac85365
NIS
2466 /* See G_* flags in cop.h */
2467 /* null terminated arg list */
8990e307 2468{
97aff369 2469 dVAR;
a0d0e21e 2470 dSP;
8990e307 2471
7918f24d
NC
2472 PERL_ARGS_ASSERT_CALL_ARGV;
2473
924508f0 2474 PUSHMARK(SP);
a0d0e21e 2475 if (argv) {
8990e307 2476 while (*argv) {
6e449a3a 2477 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2478 argv++;
2479 }
a0d0e21e 2480 PUTBACK;
8990e307 2481 }
864dbfa3 2482 return call_pv(sub_name, flags);
8990e307
LW
2483}
2484
954c1994
GS
2485/*
2486=for apidoc p||call_pv
2487
2488Performs a callback to the specified Perl sub. See L<perlcall>.
2489
2490=cut
2491*/
2492
a0d0e21e 2493I32
864dbfa3 2494Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2495 /* name of the subroutine */
2496 /* See G_* flags in cop.h */
a0d0e21e 2497{
7918f24d
NC
2498 PERL_ARGS_ASSERT_CALL_PV;
2499
0da0e728 2500 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2501}
2502
954c1994
GS
2503/*
2504=for apidoc p||call_method
2505
2506Performs a callback to the specified Perl method. The blessed object must
2507be on the stack. See L<perlcall>.
2508
2509=cut
2510*/
2511
a0d0e21e 2512I32
864dbfa3 2513Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2514 /* name of the subroutine */
2515 /* See G_* flags in cop.h */
a0d0e21e 2516{
46ca9bac 2517 STRLEN len;
7918f24d
NC
2518 PERL_ARGS_ASSERT_CALL_METHOD;
2519
46ca9bac 2520 len = strlen(methname);
2521
2522 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2523 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2524}
2525
2526/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2527/*
2528=for apidoc p||call_sv
2529
2530Performs a callback to the Perl sub whose name is in the SV. See
2531L<perlcall>.
2532
2533=cut
2534*/
2535
a0d0e21e 2536I32
001d637e 2537Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2538 /* See G_* flags in cop.h */
a0d0e21e 2539{
27da23d5 2540 dVAR; dSP;
a0d0e21e 2541 LOGOP myop; /* fake syntax tree node */
968b3946 2542 UNOP method_op;
aa689395 2543 I32 oldmark;
8ea43dc8 2544 VOL I32 retval = 0;
a0d0e21e 2545 I32 oldscope;
54310121 2546 bool oldcatch = CATCH_GET;
6224f72b 2547 int ret;
c4420975 2548 OP* const oldop = PL_op;
db36c5a1 2549 dJMPENV;
1e422769 2550
7918f24d
NC
2551 PERL_ARGS_ASSERT_CALL_SV;
2552
a0d0e21e
LW
2553 if (flags & G_DISCARD) {
2554 ENTER;
2555 SAVETMPS;
2556 }
2f8edad0
NC
2557 if (!(flags & G_WANT)) {
2558 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2559 */
2560 flags |= G_SCALAR;
2561 }
a0d0e21e 2562
aa689395 2563 Zero(&myop, 1, LOGOP);
5f66b61c 2564 myop.op_next = NULL;
f51d4af5 2565 if (!(flags & G_NOARGS))
aa689395 2566 myop.op_flags |= OPf_STACKED;
4f911530 2567 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2568 SAVEOP();
533c011a 2569 PL_op = (OP*)&myop;
aa689395 2570
3280af22
NIS
2571 EXTEND(PL_stack_sp, 1);
2572 *++PL_stack_sp = sv;
aa689395 2573 oldmark = TOPMARK;
3280af22 2574 oldscope = PL_scopestack_ix;
a0d0e21e 2575
3280af22 2576 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2577 /* Handle first BEGIN of -d. */
3280af22 2578 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2579 /* Try harder, since this may have been a sighandler, thus
2580 * curstash may be meaningless. */
ea726b52 2581 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2582 && !(flags & G_NODEBUG))
533c011a 2583 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2584
968b3946
GS
2585 if (flags & G_METHOD) {
2586 Zero(&method_op, 1, UNOP);
2587 method_op.op_next = PL_op;
2588 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2589 method_op.op_type = OP_METHOD;
968b3946 2590 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2591 myop.op_type = OP_ENTERSUB;
f39d0b86 2592 PL_op = (OP*)&method_op;
968b3946
GS
2593 }
2594
312caa8e 2595 if (!(flags & G_EVAL)) {
0cdb2077 2596 CATCH_SET(TRUE);
d6f07c05 2597 CALL_BODY_SUB((OP*)&myop);
312caa8e 2598 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2599 CATCH_SET(oldcatch);
312caa8e
CS
2600 }
2601 else {
d78bda3d 2602 myop.op_other = (OP*)&myop;
3280af22 2603 PL_markstack_ptr--;
edb2152a 2604 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2605 PL_markstack_ptr++;
a0d0e21e 2606
14dd3ad8 2607 JMPENV_PUSH(ret);
edb2152a 2608
6224f72b
GS
2609 switch (ret) {
2610 case 0:
14dd3ad8 2611 redo_body:
d6f07c05 2612 CALL_BODY_SUB((OP*)&myop);
312caa8e 2613 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2614 if (!(flags & G_KEEPERR)) {
ab69dbc2 2615 CLEAR_ERRSV();
8433848b 2616 }
a0d0e21e 2617 break;
6224f72b 2618 case 1:
f86702cc 2619 STATUS_ALL_FAILURE;
a0d0e21e 2620 /* FALL THROUGH */
6224f72b 2621 case 2:
a0d0e21e 2622 /* my_exit() was called */
3280af22 2623 PL_curstash = PL_defstash;
a0d0e21e 2624 FREETMPS;
14dd3ad8 2625 JMPENV_POP;
f86702cc 2626 my_exit_jump();
a0d0e21e 2627 /* NOTREACHED */
6224f72b 2628 case 3:
3280af22 2629 if (PL_restartop) {
febb3a6d 2630 PL_restartjmpenv = NULL;
533c011a 2631 PL_op = PL_restartop;
3280af22 2632 PL_restartop = 0;
312caa8e 2633 goto redo_body;
a0d0e21e 2634 }
3280af22 2635 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2636 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2637 retval = 0;
2638 else {
2639 retval = 1;
3280af22 2640 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2641 }
312caa8e 2642 break;
a0d0e21e 2643 }
a0d0e21e 2644
edb2152a
NC
2645 if (PL_scopestack_ix > oldscope)
2646 delete_eval_scope();
14dd3ad8 2647 JMPENV_POP;
a0d0e21e 2648 }
1e422769 2649
a0d0e21e 2650 if (flags & G_DISCARD) {
3280af22 2651 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2652 retval = 0;
2653 FREETMPS;
2654 LEAVE;
2655 }
533c011a 2656 PL_op = oldop;
a0d0e21e
LW
2657 return retval;
2658}
2659
6e72f9df 2660/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2661
954c1994
GS
2662/*
2663=for apidoc p||eval_sv
2664
2665Tells Perl to C<eval> the string in the SV.
2666
2667=cut
2668*/
2669
a0d0e21e 2670I32
864dbfa3 2671Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2672
8ac85365 2673 /* See G_* flags in cop.h */
a0d0e21e 2674{
97aff369 2675 dVAR;
924508f0 2676 dSP;
a0d0e21e 2677 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2678 VOL I32 oldmark = SP - PL_stack_base;
2679 VOL I32 retval = 0;
6224f72b 2680 int ret;
c4420975 2681 OP* const oldop = PL_op;
db36c5a1 2682 dJMPENV;
84902520 2683
7918f24d
NC
2684 PERL_ARGS_ASSERT_EVAL_SV;
2685
4633a7c4
LW
2686 if (flags & G_DISCARD) {
2687 ENTER;
2688 SAVETMPS;
2689 }
2690
462e5cf6 2691 SAVEOP();
533c011a
NIS
2692 PL_op = (OP*)&myop;
2693 Zero(PL_op, 1, UNOP);
3280af22
NIS
2694 EXTEND(PL_stack_sp, 1);
2695 *++PL_stack_sp = sv;
79072805 2696
4633a7c4
LW
2697 if (!(flags & G_NOARGS))
2698 myop.op_flags = OPf_STACKED;
5f66b61c 2699 myop.op_next = NULL;
6e72f9df 2700 myop.op_type = OP_ENTEREVAL;
4f911530 2701 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2702 if (flags & G_KEEPERR)
2703 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2704
dedbcade
DM
2705 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2706 * before a PUSHEVAL, which corrupts the stack after a croak */
2707 TAINT_PROPER("eval_sv()");
2708
14dd3ad8 2709 JMPENV_PUSH(ret);
6224f72b
GS
2710 switch (ret) {
2711 case 0:
14dd3ad8 2712 redo_body:
d6f07c05 2713 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2714 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2715 if (!(flags & G_KEEPERR)) {
ab69dbc2 2716 CLEAR_ERRSV();
8433848b 2717 }
4633a7c4 2718 break;
6224f72b 2719 case 1:
f86702cc 2720 STATUS_ALL_FAILURE;
4633a7c4 2721 /* FALL THROUGH */
6224f72b 2722 case 2:
4633a7c4 2723 /* my_exit() was called */
3280af22 2724 PL_curstash = PL_defstash;
4633a7c4 2725 FREETMPS;
14dd3ad8 2726 JMPENV_POP;
f86702cc 2727 my_exit_jump();
4633a7c4 2728 /* NOTREACHED */
6224f72b 2729 case 3:
3280af22 2730 if (PL_restartop) {
febb3a6d 2731 PL_restartjmpenv = NULL;
533c011a 2732 PL_op = PL_restartop;
3280af22 2733 PL_restartop = 0;
312caa8e 2734 goto redo_body;
4633a7c4 2735 }
3280af22 2736 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2737 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2738 retval = 0;
2739 else {
2740 retval = 1;
3280af22 2741 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2742 }
312caa8e 2743 break;
4633a7c4
LW
2744 }
2745
14dd3ad8 2746 JMPENV_POP;
4633a7c4 2747 if (flags & G_DISCARD) {
3280af22 2748 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2749 retval = 0;
2750 FREETMPS;
2751 LEAVE;
2752 }
533c011a 2753 PL_op = oldop;
4633a7c4
LW
2754 return retval;
2755}
2756
954c1994
GS
2757/*
2758=for apidoc p||eval_pv
2759
2760Tells Perl to C<eval> the given string and return an SV* result.
2761
2762=cut
2763*/
2764
137443ea 2765SV*
864dbfa3 2766Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2767{
97aff369 2768 dVAR;
137443ea
PP
2769 dSP;
2770 SV* sv = newSVpv(p, 0);
2771
7918f24d
NC
2772 PERL_ARGS_ASSERT_EVAL_PV;
2773
864dbfa3 2774 eval_sv(sv, G_SCALAR);
137443ea
PP
2775 SvREFCNT_dec(sv);
2776
2777 SPAGAIN;
2778 sv = POPs;
2779 PUTBACK;
2780
2d8e6c8d 2781 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2782 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2783 }
137443ea
PP
2784
2785 return sv;
2786}
2787
4633a7c4
LW
2788/* Require a module. */
2789
954c1994 2790/*
ccfc67b7
JH
2791=head1 Embedding Functions
2792
954c1994
GS
2793=for apidoc p||require_pv
2794
7d3fb230
BS
2795Tells Perl to C<require> the file named by the string argument. It is
2796analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2797implemented that way; consider using load_module instead.
954c1994 2798
7d3fb230 2799=cut */
954c1994 2800
4633a7c4 2801void
864dbfa3 2802Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2803{
97aff369 2804 dVAR;
d3acc0f7 2805 dSP;
97aff369 2806 SV* sv;
7918f24d
NC
2807
2808 PERL_ARGS_ASSERT_REQUIRE_PV;
2809
e788e7d3 2810 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2811 PUTBACK;
be41e5d9
NC
2812 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2813 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2814 SPAGAIN;
2815 POPSTACK;
79072805
LW
2816}
2817
76e3520e 2818STATIC void
e1ec3a88 2819S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2820{
ab821d7f 2821 /* This message really ought to be max 23 lines.
75c72d73 2822 * Removed -h because the user already knows that option. Others? */
fb73857a 2823
1566c39d
NC
2824 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2825 minimum of 509 character string literals. */
27da23d5 2826 static const char * const usage_msg[] = {
1566c39d
NC
2827" -0[octal] specify record separator (\\0, if no argument)\n"
2828" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2829" -C[number/list] enables the listed Unicode features\n"
2830" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2831" -d[:debugger] run program under debugger\n"
2832" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2833" -e program one line of program (several -e's allowed, omit programfile)\n"
2834" -E program like -e, but enables all optional features\n"
2835" -f don't do $sitelib/sitecustomize.pl at startup\n"
2836" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2837" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2838" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2839" -l[octal] enable line ending processing, specifies line terminator\n"
2840" -[mM][-]module execute \"use/no module...\" before executing program\n"
2841" -n assume \"while (<>) { ... }\" loop around program\n"
2842" -p assume loop like -n but print line also, like sed\n"
2843" -s enable rudimentary parsing for switches after programfile\n"
2844" -S look for programfile using PATH environment variable\n",
2845" -t enable tainting warnings\n"
2846" -T enable tainting checks\n"
2847" -u dump core after parsing program\n"
2848" -U allow unsafe operations\n"
2849" -v print version, patchlevel and license\n"
2850" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2851" -w enable many useful warnings\n"
1566c39d
NC
2852" -W enable all warnings\n"
2853" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2854" -X disable all warnings\n"
2855" \n"
2856"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2857NULL
2858};
27da23d5 2859 const char * const *p = usage_msg;
1566c39d 2860 PerlIO *out = PerlIO_stdout();
fb73857a 2861
7918f24d
NC
2862 PERL_ARGS_ASSERT_USAGE;
2863
1566c39d
NC
2864 PerlIO_printf(out,
2865 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2866 name);
fb73857a 2867 while (*p)
1566c39d 2868 PerlIO_puts(out, *p++);
4633a7c4
LW
2869}
2870
b4ab917c
DM
2871/* convert a string of -D options (or digits) into an int.
2872 * sets *s to point to the char after the options */
2873
2874#ifdef DEBUGGING
2875int
e1ec3a88 2876Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2877{
27da23d5 2878 static const char * const usage_msgd[] = {
651b8f1a
NC
2879 " Debugging flag values: (see also -d)\n"
2880 " p Tokenizing and parsing (with v, displays parse stack)\n"
2881 " s Stack snapshots (with v, displays all stacks)\n"
2882 " l Context (loop) stack processing\n"
2883 " t Trace execution\n"
2884 " o Method and overloading resolution\n",
2885 " c String/numeric conversions\n"
2886 " P Print profiling info, source file input state\n"
2887 " m Memory and SV allocation\n"
2888 " f Format processing\n"
2889 " r Regular expression parsing and execution\n"
2890 " x Syntax tree dump\n",
2891 " u Tainting checks\n"
2892 " H Hash dump -- usurps values()\n"
2893 " X Scratchpad allocation\n"
2894 " D Cleaning up\n"
2895 " T Tokenising\n"
2896 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2897 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2898 " v Verbose: use in conjunction with other flags\n"
2899 " C Copy On Write\n"
2900 " A Consistency checks on internal structures\n"
2901 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2902 " M trace smart match resolution\n"
2903 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2904 NULL
2905 };
b4ab917c 2906 int i = 0;
7918f24d
NC
2907
2908 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2909
b4ab917c
DM
2910 if (isALPHA(**s)) {
2911 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2912 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2913
2914 for (; isALNUM(**s); (*s)++) {
c4420975 2915 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2916 if (d)
2917 i |= 1 << (d - debopts);
2918 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2919 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2920 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2921 }
2922 }
e6e64d9b 2923 else if (isDIGIT(**s)) {
b4ab917c
DM
2924 i = atoi(*s);
2925 for (; isALNUM(**s); (*s)++) ;
2926 }
ddcf8bc1 2927 else if (givehelp) {
06e869a4 2928 const char *const *p = usage_msgd;
651b8f1a 2929 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 2930 }
b4ab917c
DM
2931# ifdef EBCDIC
2932 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2933 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2934 "-Dp not implemented on this platform\n");
2935# endif
2936 return i;
2937}
2938#endif
2939
79072805
LW
2940/* This routine handles any switches that can be given during run */
2941
c7030b81
NC
2942const char *
2943Perl_moreswitches(pTHX_ const char *s)
79072805 2944{
27da23d5 2945 dVAR;
84c133a0 2946 UV rschar;
0544e6df 2947 const char option = *s; /* used to remember option in -m/-M code */
79072805 2948
7918f24d
NC
2949 PERL_ARGS_ASSERT_MORESWITCHES;
2950
79072805
LW
2951 switch (*s) {
2952 case '0':
a863c7d1 2953 {
f2095865 2954 I32 flags = 0;
a3b680e6 2955 STRLEN numlen;
f2095865
JH
2956
2957 SvREFCNT_dec(PL_rs);
2958 if (s[1] == 'x' && s[2]) {
a3b680e6 2959 const char *e = s+=2;
f2095865
JH
2960 U8 *tmps;
2961
a3b680e6
AL
2962 while (*e)
2963 e++;
f2095865
JH
2964 numlen = e - s;
2965 flags = PERL_SCAN_SILENT_ILLDIGIT;
2966 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2967 if (s + numlen < e) {
2968 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2969 numlen = 0;
2970 s--;
2971 }
396482e1 2972 PL_rs = newSVpvs("");
c5661c80 2973 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2974 tmps = (U8*)SvPVX(PL_rs);
2975 uvchr_to_utf8(tmps, rschar);
2976 SvCUR_set(PL_rs, UNISKIP(rschar));
2977 SvUTF8_on(PL_rs);
2978 }
2979 else {
2980 numlen = 4;
2981 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2982 if (rschar & ~((U8)~0))
2983 PL_rs = &PL_sv_undef;
2984 else if (!rschar && numlen >= 2)
396482e1 2985 PL_rs = newSVpvs("");
f2095865
JH
2986 else {
2987 char ch = (char)rschar;
2988 PL_rs = newSVpvn(&ch, 1);
2989 }
2990 }
64ace3f8 2991 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 2992 return s + numlen;
a863c7d1 2993 }
46487f74 2994 case 'C':
a05d7ebb 2995 s++;
dd374669 2996 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
2997 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
2998 PL_utf8cache = -1;
46487f74 2999 return s;
2304df62 3000 case 'F':
3280af22 3001 PL_minus_F = TRUE;
ebce5377
RGS
3002 PL_splitstr = ++s;
3003 while (*s && !isSPACE(*s)) ++s;
e49e380e 3004 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3005 return s;
79072805 3006 case 'a':
3280af22 3007 PL_minus_a = TRUE;
79072805
LW
3008 s++;
3009 return s;
3010 case 'c':
3280af22 3011 PL_minus_c = TRUE;
79072805
LW
3012 s++;
3013 return s;
3014 case 'd':
f20b2998 3015 forbid_setid('d', FALSE);
4633a7c4 3016 s++;
2cbb2ee1
RGS
3017
3018 /* -dt indicates to the debugger that threads will be used */
3019 if (*s == 't' && !isALNUM(s[1])) {
3020 ++s;
3021 my_setenv("PERL5DB_THREADED", "1");
3022 }
3023
70c94a19
RR
3024 /* The following permits -d:Mod to accepts arguments following an =
3025 in the fashion that -MSome::Mod does. */
3026 if (*s == ':' || *s == '=') {
f85893a1
NC
3027 const char *start = ++s;
3028 const char *const end = s + strlen(s);
396482e1 3029 SV * const sv = newSVpvs("use Devel::");
f85893a1 3030
70c94a19
RR
3031 /* We now allow -d:Module=Foo,Bar */
3032 while(isALNUM(*s) || *s==':') ++s;
3033 if (*s != '=')
f85893a1 3034 sv_catpvn(sv, start, end - start);
70c94a19
RR
3035 else {
3036 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3037 /* Don't use NUL as q// delimiter here, this string goes in the
3038 * environment. */
3039 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3040 }
f85893a1 3041 s = end;
184f32ec 3042 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3043 SvREFCNT_dec(sv);
4633a7c4 3044 }
ed094faf 3045 if (!PL_perldb) {
3280af22 3046 PL_perldb = PERLDB_ALL;
a0d0e21e 3047 init_debugger();
ed094faf 3048 }
79072805
LW
3049 return s;
3050 case 'D':
0453d815 3051 {
79072805 3052#ifdef DEBUGGING
f20b2998 3053 forbid_setid('D', FALSE);
b4ab917c 3054 s++;
dd374669 3055 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3056#else /* !DEBUGGING */
0453d815 3057 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3058 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3059 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3060 for (s++; isALNUM(*s); s++) ;
79072805 3061#endif
79072805 3062 return s;
0453d815 3063 }
4633a7c4 3064 case 'h':
ac27b0f5 3065 usage(PL_origargv[0]);
7ca617d0 3066 my_exit(0);
79072805 3067 case 'i':
43c5f42d 3068 Safefree(PL_inplace);
c030f24b
GH
3069#if defined(__CYGWIN__) /* do backup extension automagically */
3070 if (*(s+1) == '\0') {
c86a4f2e 3071 PL_inplace = savepvs(".bak");
c030f24b
GH
3072 return s+1;
3073 }
3074#endif /* __CYGWIN__ */
5ef5d758 3075 {
d4c19fe8 3076 const char * const start = ++s;
5ef5d758
NC
3077 while (*s && !isSPACE(*s))
3078 ++s;
3079
3080 PL_inplace = savepvn(start, s - start);
3081 }
7b8d334a 3082 if (*s) {
5ef5d758 3083 ++s;
7b8d334a 3084 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3085 s++;
7b8d334a 3086 }
fb73857a 3087 return s;
4e49a025 3088 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3089 forbid_setid('I', FALSE);
fb73857a
PP
3090 ++s;
3091 while (*s && isSPACE(*s))
3092 ++s;
3093 if (*s) {
c7030b81 3094 const char *e, *p;
0df16ed7
GS
3095 p = s;
3096 /* ignore trailing spaces (possibly followed by other switches) */
3097 do {
3098 for (e = p; *e && !isSPACE(*e); e++) ;
3099 p = e;
3100 while (isSPACE(*p))
3101 p++;
3102 } while (*p && *p != '-');
55b4bc1c 3103 incpush(s, e-s,
e28f3139 3104 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3105 s = p;
3106 if (*s == '-')
3107 s++;
79072805
LW
3108 }
3109 else
a67e862a 3110 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3111 return s;
79072805 3112 case 'l':
3280af22 3113 PL_minus_l = TRUE;
79072805 3114 s++;
7889fe52
NIS
3115 if (PL_ors_sv) {
3116 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3117 PL_ors_sv = NULL;
7889fe52 3118 }
79072805 3119 if (isDIGIT(*s)) {
53305cf1 3120 I32 flags = 0;
a3b680e6 3121 STRLEN numlen;
396482e1 3122 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3123 numlen = 3 + (*s == '0');
3124 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3125 s += numlen;
3126 }
3127 else {
8bfdd7d9 3128 if (RsPARA(PL_rs)) {
396482e1 3129 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3130 }
3131 else {
8bfdd7d9 3132 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3133 }
79072805
LW
3134 }
3135 return s;
1a30305b 3136 case 'M':
f20b2998 3137 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3138 /* FALL THROUGH */
3139 case 'm':
f20b2998 3140 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3141 if (*++s) {
c7030b81 3142 const char *start;
b64cb68c 3143 const char *end;
11343788 3144 SV *sv;
e1ec3a88 3145 const char *use = "use ";
0544e6df 3146 bool colon = FALSE;
a5f75d66 3147 /* -M-foo == 'no foo' */
d0043bd1
NC
3148 /* Leading space on " no " is deliberate, to make both
3149 possibilities the same length. */
3150 if (*s == '-') { use = " no "; ++s; }
3151 sv = newSVpvn(use,4);
a5f75d66 3152 start = s;
1a30305b 3153 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3154 while(isALNUM(*s) || *s==':') {
3155 if( *s++ == ':' ) {
3156 if( *s == ':' )
3157 s++;
3158 else
3159 colon = TRUE;
3160 }
3161 }
3162 if (s == start)
3163 Perl_croak(aTHX_ "Module name required with -%c option",
3164 option);
3165 if (colon)
3166 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3167 "contains single ':'",
63da6837 3168 (int)(s - start), start, option);
b64cb68c 3169 end = s + strlen(s);
c07a80fd 3170 if (*s != '=') {
b64cb68c 3171 sv_catpvn(sv, start, end - start);
0544e6df 3172 if (option == 'm') {
c07a80fd 3173 if (*s != '\0')
cea2e8a9 3174 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3175 sv_catpvs( sv, " ()");
c07a80fd
PP
3176 }
3177 } else {
11343788 3178 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3179 /* Use NUL as q''-delimiter. */
3180 sv_catpvs(sv, " split(/,/,q\0");
3181 ++s;
3182 sv_catpvn(sv, s, end - s);
396482e1 3183 sv_catpvs(sv, "\0)");
c07a80fd 3184 }
b64cb68c 3185 s = end;
29a861e7 3186 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3187 }
3188 else
0544e6df 3189 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3190 return s;
79072805 3191 case 'n':
3280af22 3192 PL_minus_n = TRUE;
79072805
LW
3193 s++;
3194 return s;
3195 case 'p':
3280af22 3196 PL_minus_p = TRUE;
79072805
LW
3197 s++;
3198 return s;
3199 case 's':
f20b2998 3200 forbid_setid('s', FALSE);
3280af22 3201 PL_doswitches = TRUE;
79072805
LW
3202 s++;
3203 return s;
6537fe72
MS
3204 case 't':
3205 if (!PL_tainting)
22f7c9c9 3206 TOO_LATE_FOR('t');
6537fe72
MS
3207 s++;
3208 return s;
463ee0b2 3209 case 'T':
3280af22 3210 if (!PL_tainting)
22f7c9c9 3211 TOO_LATE_FOR('T');
463ee0b2
LW
3212 s++;
3213 return s;
79072805 3214 case 'u':
3280af22 3215 PL_do_undump = TRUE;
79072805
LW
3216 s++;
3217 return s;
3218 case 'U':
3280af22 3219 PL_unsafe = TRUE;
79072805
LW
3220 s++;
3221 return s;
3222 case 'v':
d7aa5382 3223 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3224 upg_version(PL_patchlevel, TRUE);
8e9464f1 3225#if !defined(DGUX)
46807d8e
YO
3226 {
3227 SV* level= vstringify(PL_patchlevel);
3228#ifdef PERL_PATCHNUM
23d483e2
NC
3229# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3230 SV *num = newSVpvs(PERL_PATCHNUM "*");
3231# else
3232 SV *num = newSVpvs(PERL_PATCHNUM);
3233# endif
46807d8e
YO
3234
3235 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3236 SvREFCNT_dec(level);
3237 level= num;
3238 } else {
d0a9311f 3239 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3240 SvREFCNT_dec(num);
3241 }
3242 #endif
3243 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3244 "\nThis is perl " STRINGIFY(PERL_REVISION)
3245 ", version " STRINGIFY(PERL_VERSION)
3246 ", subversion " STRINGIFY(PERL_SUBVERSION)
3247 " (%"SVf") built for " ARCHNAME, level
3248 );
46807d8e
YO
3249 SvREFCNT_dec(level);
3250 }
8e9464f1
JH
3251#else /* DGUX */
3252/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3253 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3254 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3255 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3256 PerlIO_printf(PerlIO_stdout(),
3257 Perl_form(aTHX_ " built under %s at %s %s\n",
3258 OSNAME, __DATE__, __TIME__));
3259 PerlIO_printf(PerlIO_stdout(),
3260 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3261 OSVERS));
8e9464f1 3262#endif /* !DGUX */
fb73857a
PP
3263#if defined(LOCAL_PATCH_COUNT)
3264 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3265 PerlIO_printf(PerlIO_stdout(),
3266 "\n(with %d registered patch%s, "
3267 "see perl -V for more detail)",
bb7a0f54 3268 LOCAL_PATCH_COUNT,
b0e47665 3269 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3270#endif
1a30305b 3271
b0e47665 3272 PerlIO_printf(PerlIO_stdout(),
32709fdf 3273 "\n\nCopyright 1987-2010, Larry Wall\n");
79072805 3274#ifdef MSDOS
b0e47665
GS
3275 PerlIO_printf(PerlIO_stdout(),
3276 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3277#endif
3278#ifdef DJGPP
b0e47665
GS
3279 PerlIO_printf(PerlIO_stdout(),
3280 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3281 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3282#endif
79072805 3283#ifdef OS2
b0e47665
GS
3284 PerlIO_printf(PerlIO_stdout(),
3285 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3286 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3287#endif
79072805 3288#ifdef atarist
b0e47665
GS
3289 PerlIO_printf(PerlIO_stdout(),
3290 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3291#endif
a3f9223b 3292#ifdef __BEOS__
b0e47665
GS
3293 PerlIO_printf(PerlIO_stdout(),
3294 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3295#endif
1d84e8df 3296#ifdef MPE
b0e47665 3297 PerlIO_printf(PerlIO_stdout(),
e583a879 3298 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3299#endif
9d116dd7 3300#ifdef OEMVS
b0e47665
GS
3301 PerlIO_printf(PerlIO_stdout(),
3302 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3303#endif
495c5fdc 3304#ifdef __VOS__
b0e47665 3305 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3306 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3307#endif
092bebab 3308#ifdef __OPEN_VM
b0e47665
GS
3309 PerlIO_printf(PerlIO_stdout(),
3310 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3311#endif
a1a0e61e 3312#ifdef POSIX_BC
b0e47665
GS
3313 PerlIO_printf(PerlIO_stdout(),
3314 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3315#endif
f83d2536 3316#ifdef EPOC
b0e47665 3317 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3318 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3319#endif
e1caacb4 3320#ifdef UNDER_CE
b475b3e6
JH
3321 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3322 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3323 wce_hitreturn();
3324#endif
a0fd4948 3325#ifdef __SYMBIAN32__
27da23d5
JH
3326 PerlIO_printf(PerlIO_stdout(),
3327 "Symbian port by Nokia, 2004-2005\n");
3328#endif
baed7233
DL
3329#ifdef BINARY_BUILD_NOTICE
3330 BINARY_BUILD_NOTICE;
3331#endif
b0e47665
GS
3332 PerlIO_printf(PerlIO_stdout(),
3333 "\n\
79072805 3334Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3335GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3336Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3337this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3338Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3339 my_exit(0);
79072805 3340 case 'w':
b2e5e6ba 3341 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3342 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3343 }
599cee73
PM
3344 s++;
3345 return s;
3346 case 'W':
ac27b0f5 3347 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3348 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3349 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3350 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3351 s++;
3352 return s;
3353 case 'X':
ac27b0f5 3354 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3355 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3356 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3357 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3358 s++;
3359 return s;
a0d0e21e 3360 case '*':
79072805 3361 case ' ':
d3133c89
NC
3362 while( *s == ' ' )
3363 ++s;
3364 if (s[0] == '-') /* Additional switches on #! line. */
3365 return s+1;
79072805 3366 break;
a0d0e21e 3367 case '-':
79072805 3368 case 0:
51882d45 3369#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3370 case '\r':
3371#endif
79072805
LW
3372 case '\n':
3373 case '\t':
3374 break;
aa689395
PP
3375#ifdef ALTERNATE_SHEBANG
3376 case 'S': /* OS/2 needs -S on "extproc" line. */
3377 break;
3378#endif
79072805 3379 default:
cea2e8a9 3380 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3381 }
bd61b366 3382 return NULL;
79072805
LW
3383}
3384
3385/* compliments of Tom Christiansen */
3386
3387/* unexec() can be found in the Gnu emacs distribution */
ee580363 3388/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3389
3390void
864dbfa3 3391Perl_my_unexec(pTHX)
79072805 3392{
b37c2d43 3393 PERL_UNUSED_CONTEXT;
79072805 3394#ifdef UNEXEC
b37c2d43
AL
3395 SV * prog = newSVpv(BIN_EXP, 0);
3396 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3397 int status = 1;
79072805
LW
3398 extern int etext;
3399
396482e1 3400 sv_catpvs(prog, "/perl");
396482e1 3401 sv_catpvs(file, ".perldump");
79072805 3402
ee580363
GS
3403 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3404 /* unexec prints msg to stderr in case of failure */
6ad3d225 3405 PerlProc_exit(status);
79072805 3406#else
a5f75d66
AD
3407# ifdef VMS
3408# include <lib$routines.h>
3409 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3410# elif defined(WIN32) || defined(__CYGWIN__)
3411 Perl_croak(aTHX_ "dump is not supported");
aa689395 3412# else
79072805 3413 ABORT(); /* for use with undump */
aa689395 3414# endif
a5f75d66 3415#endif
79072805
LW
3416}
3417
cb68f92d
GS
3418/* initialize curinterp */
3419STATIC void
cea2e8a9 3420S_init_interp(pTHX)
cb68f92d 3421{
97aff369 3422 dVAR;
acfe0abc
GS
3423#ifdef MULTIPLICITY
3424# define PERLVAR(var,type)
3425# define PERLVARA(var,n,type)
3426# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3427# define PERLVARI(var,type,init) aTHX->var = init;
3428# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3429# else
acfe0abc
GS
3430# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3431# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3432# endif
acfe0abc 3433# include "intrpvar.h"
acfe0abc
GS
3434# undef PERLVAR
3435# undef PERLVARA
3436# undef PERLVARI
3437# undef PERLVARIC
3438#else
3439# define PERLVAR(var,type)
3440# define PERLVARA(var,n,type)
3441# define PERLVARI(var,type,init) PL_##var = init;
3442# define PERLVARIC(var,type,init) PL_##var = init;
3443# include "intrpvar.h"
acfe0abc
GS
3444# undef PERLVAR
3445# undef PERLVARA
3446# undef PERLVARI
3447# undef PERLVARIC
cb68f92d
GS
3448#endif
3449
46ab3289
NC
3450 /* As these are inside a structure, PERLVARI isn't capable of initialising
3451 them */
6c3f0a89
NC
3452 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3453 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3454}
3455
76e3520e 3456STATIC void
cea2e8a9 3457S_init_main_stash(pTHX)
79072805 3458{
97aff369 3459 dVAR;
463ee0b2 3460 GV *gv;
6e72f9df 3461
3280af22 3462 PL_curstash = PL_defstash = newHV();
23579a14
NC
3463 /* We know that the string "main" will be in the global shared string
3464 table, so it's a small saving to use it rather than allocate another
3465 8 bytes. */
18916d0d 3466 PL_curstname = newSVpvs_share("main");
fafc274c 3467 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3468 /* If we hadn't caused another reference to "main" to be in the shared
3469 string table above, then it would be worth reordering these two,
3470 because otherwise all we do is delete "main" from it as a consequence
3471 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3472 SvREFCNT_dec(GvHV(gv));
23579a14 3473 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3474 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3475 SvREADONLY_on(gv);
fafc274c
NC
3476 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3477 SVt_PVAV)));
5a5094bd 3478 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3479 GvMULTI_on(PL_incgv);
fafc274c 3480 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3481 GvMULTI_on(PL_hintgv);
fafc274c 3482 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3483 SvREFCNT_inc_simple_void(PL_defgv);
fafc274c 3484 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5a5094bd 3485 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3486 GvMULTI_on(PL_errgv);
fafc274c 3487 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22 3488 GvMULTI_on(PL_replgv);
cea2e8a9 3489 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3490#ifdef PERL_DONT_CREATE_GVSV
3491 gv_SVadd(PL_errgv);
3492#endif
38a03e6e 3493 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
ab69dbc2 3494 CLEAR_ERRSV();
3280af22 3495 PL_curstash = PL_defstash;
11faa288 3496 CopSTASH_set(&PL_compiling, PL