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4b88f280 1#line 2 "perl.c"
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
32709fdf
A
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 by Larry Wall
6 * and others
a687059c 7 *
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LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of 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;
bf81751b
DM
157 if (!PL_veto_cleanup) {
158 PERL_SYS_TERM_BODY();
159 }
cbec8ebe
DM
160}
161
162
32e30700
GS
163#ifdef PERL_IMPLICIT_SYS
164PerlInterpreter *
7766f137
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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);
d7aa5382 351
27da23d5
JH
352#ifdef HAS_MMAP
353 if (!PL_mmap_page_size) {
354#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
355 {
356 SETERRNO(0, SS_NORMAL);
357# ifdef _SC_PAGESIZE
358 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
359# else
360 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
361# endif
362 if ((long) PL_mmap_page_size < 0) {
363 if (errno) {
44f8325f 364 SV * const error = ERRSV;
d4c19fe8 365 SvUPGRADE(error, SVt_PV);
0510663f 366 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
367 }
368 else
369 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
370 }
371 }
372#else
373# ifdef HAS_GETPAGESIZE
374 PL_mmap_page_size = getpagesize();
375# else
376# if defined(I_SYS_PARAM) && defined(PAGESIZE)
377 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
378# endif
379# endif
380#endif
381 if (PL_mmap_page_size <= 0)
382 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
383 (IV) PL_mmap_page_size);
384 }
385#endif /* HAS_MMAP */
386
387#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
388 PL_timesbase.tms_utime = 0;
389 PL_timesbase.tms_stime = 0;
390 PL_timesbase.tms_cutime = 0;
391 PL_timesbase.tms_cstime = 0;
392#endif
393
7d113631
NC
394 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
395
a3e6e81e 396 PL_registered_mros = newHV();
9e169432
NC
397 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
398 HvMAX(PL_registered_mros) = 0;
a3e6e81e 399
8990e307 400 ENTER;
79072805
LW
401}
402
954c1994 403/*
62375a60
NIS
404=for apidoc nothreadhook
405
406Stub that provides thread hook for perl_destruct when there are
407no threads.
408
409=cut
410*/
411
412int
4e9e3734 413Perl_nothreadhook(pTHX)
62375a60 414{
96a5add6 415 PERL_UNUSED_CONTEXT;
62375a60
NIS
416 return 0;
417}
418
41e4abd8
NC
419#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
420void
421Perl_dump_sv_child(pTHX_ SV *sv)
422{
423 ssize_t got;
bf357333
NC
424 const int sock = PL_dumper_fd;
425 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
426 union control_un control;
427 struct msghdr msg;
808ad2d0 428 struct iovec vec[2];
bf357333 429 struct cmsghdr *cmptr;
808ad2d0
NC
430 int returned_errno;
431 unsigned char buffer[256];
41e4abd8 432
7918f24d
NC
433 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
434
bf357333 435 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
436 return;
437
438 PerlIO_flush(Perl_debug_log);
439
bf357333
NC
440 /* All these shenanigans are to pass a file descriptor over to our child for
441 it to dump out to. We can't let it hold open the file descriptor when it
442 forks, as the file descriptor it will dump to can turn out to be one end
443 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 444 be open, the wait would be forever.) */
bf357333
NC
445
446 msg.msg_control = control.control;
447 msg.msg_controllen = sizeof(control.control);
448 /* We're a connected socket so we don't need a destination */
449 msg.msg_name = NULL;
450 msg.msg_namelen = 0;
451 msg.msg_iov = vec;
808ad2d0 452 msg.msg_iovlen = 1;
bf357333
NC
453
454 cmptr = CMSG_FIRSTHDR(&msg);
455 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
456 cmptr->cmsg_level = SOL_SOCKET;
457 cmptr->cmsg_type = SCM_RIGHTS;
458 *((int *)CMSG_DATA(cmptr)) = 1;
459
460 vec[0].iov_base = (void*)&sv;
461 vec[0].iov_len = sizeof(sv);
462 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
463
464 if(got < 0) {
bf357333 465 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
466 abort();
467 }
bf357333
NC
468 if(got < sizeof(sv)) {
469 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
470 abort();
471 }
472
808ad2d0
NC
473 /* Return protocol is
474 int: errno value
475 unsigned char: length of location string (0 for empty)
476 unsigned char*: string (not terminated)
477 */
478 vec[0].iov_base = (void*)&returned_errno;
479 vec[0].iov_len = sizeof(returned_errno);
480 vec[1].iov_base = buffer;
481 vec[1].iov_len = 1;
482
483 got = readv(sock, vec, 2);
41e4abd8
NC
484
485 if(got < 0) {
486 perror("Debug leaking scalars parent read failed");
808ad2d0 487 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
488 abort();
489 }
808ad2d0 490 if(got < sizeof(returned_errno) + 1) {
41e4abd8 491 perror("Debug leaking scalars parent short read");
808ad2d0 492 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
493 abort();
494 }
495
808ad2d0
NC
496 if (*buffer) {
497 got = read(sock, buffer + 1, *buffer);
498 if(got < 0) {
499 perror("Debug leaking scalars parent read 2 failed");
500 PerlIO_flush(PerlIO_stderr());
501 abort();
502 }
503
504 if(got < *buffer) {
505 perror("Debug leaking scalars parent short read 2");
506 PerlIO_flush(PerlIO_stderr());
507 abort();
508 }
509 }
510
511 if (returned_errno || *buffer) {
512 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
513 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
514 returned_errno, strerror(returned_errno));
41e4abd8
NC
515 }
516}
517#endif
518
62375a60 519/*
954c1994
GS
520=for apidoc perl_destruct
521
522Shuts down a Perl interpreter. See L<perlembed>.
523
524=cut
525*/
526
31d77e54 527int
0cb96387 528perl_destruct(pTHXx)
79072805 529{
27da23d5 530 dVAR;
be2ea8ed 531 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 532 HV *hv;
2aa47728 533#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
534 pid_t child;
535#endif
8990e307 536
7918f24d
NC
537 PERL_ARGS_ASSERT_PERL_DESTRUCT;
538#ifndef MULTIPLICITY
ed6c66dd 539 PERL_UNUSED_ARG(my_perl);
7918f24d 540#endif
9d4ba2ae 541
3d22c4f0
GG
542 assert(PL_scopestack_ix == 1);
543
7766f137
GS
544 /* wait for all pseudo-forked children to finish */
545 PERL_WAIT_FOR_CHILDREN;
546
3280af22 547 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
548#ifdef DEBUGGING
549 {
9d4ba2ae
AL
550 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
551 if (s) {
e1ec3a88 552 const int i = atoi(s);
5f05dabc
PP
553 if (destruct_level < i)
554 destruct_level = i;
555 }
4633a7c4
LW
556 }
557#endif
558
27da23d5 559 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
560 dJMPENV;
561 int x = 0;
562
563 JMPENV_PUSH(x);
1b6737cc 564 PERL_UNUSED_VAR(x);
f3faeb53
AB
565 if (PL_endav && !PL_minus_c)
566 call_list(PL_scopestack_ix, PL_endav);
567 JMPENV_POP;
26f423df 568 }
f3faeb53 569 LEAVE;
a0d0e21e 570 FREETMPS;
3d22c4f0 571 assert(PL_scopestack_ix == 0);
a0d0e21e 572
e00b64d4 573 /* Need to flush since END blocks can produce output */
f13a2bc0 574 my_fflush_all();
e00b64d4 575
62375a60
NIS
576 if (CALL_FPTR(PL_threadhook)(aTHX)) {
577 /* Threads hook has vetoed further cleanup */
c301d606 578 PL_veto_cleanup = TRUE;
37038d91 579 return STATUS_EXIT;
62375a60
NIS
580 }
581
2aa47728
NC
582#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
583 if (destruct_level != 0) {
584 /* Fork here to create a child. Our child's job is to preserve the
585 state of scalars prior to destruction, so that we can instruct it
586 to dump any scalars that we later find have leaked.
587 There's no subtlety in this code - it assumes POSIX, and it doesn't
588 fail gracefully */
589 int fd[2];
590
591 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
592 perror("Debug leaking scalars socketpair failed");
593 abort();
594 }
595
596 child = fork();
597 if(child == -1) {
598 perror("Debug leaking scalars fork failed");
599 abort();
600 }
601 if (!child) {
602 /* We are the child */
3125a5a4
NC
603 const int sock = fd[1];
604 const int debug_fd = PerlIO_fileno(Perl_debug_log);
605 int f;
808ad2d0
NC
606 const char *where;
607 /* Our success message is an integer 0, and a char 0 */
b61433a9 608 static const char success[sizeof(int) + 1] = {0};
3125a5a4 609
2aa47728 610 close(fd[0]);
2aa47728 611
3125a5a4
NC
612 /* We need to close all other file descriptors otherwise we end up
613 with interesting hangs, where the parent closes its end of a
614 pipe, and sits waiting for (another) child to terminate. Only
615 that child never terminates, because it never gets EOF, because
bf357333
NC
616 we also have the far end of the pipe open. We even need to
617 close the debugging fd, because sometimes it happens to be one
618 end of a pipe, and a process is waiting on the other end for
619 EOF. Normally it would be closed at some point earlier in
620 destruction, but if we happen to cause the pipe to remain open,
621 EOF never occurs, and we get an infinite hang. Hence all the
622 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
623
624 f = sysconf(_SC_OPEN_MAX);
625 if(f < 0) {
808ad2d0
NC
626 where = "sysconf failed";
627 goto abort;
3125a5a4
NC
628 }
629 while (f--) {
630 if (f == sock)
631 continue;
3125a5a4
NC
632 close(f);
633 }
634
2aa47728
NC
635 while (1) {
636 SV *target;
bf357333
NC
637 union control_un control;
638 struct msghdr msg;
639 struct iovec vec[1];
640 struct cmsghdr *cmptr;
641 ssize_t got;
642 int got_fd;
643
644 msg.msg_control = control.control;
645 msg.msg_controllen = sizeof(control.control);
646 /* We're a connected socket so we don't need a source */
647 msg.msg_name = NULL;
648 msg.msg_namelen = 0;
649 msg.msg_iov = vec;
650 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
651
652 vec[0].iov_base = (void*)&target;
653 vec[0].iov_len = sizeof(target);
654
655 got = recvmsg(sock, &msg, 0);
2aa47728
NC
656
657 if(got == 0)
658 break;
659 if(got < 0) {
808ad2d0
NC
660 where = "recv failed";
661 goto abort;
2aa47728
NC
662 }
663 if(got < sizeof(target)) {
808ad2d0
NC
664 where = "short recv";
665 goto abort;
2aa47728 666 }
bf357333 667
808ad2d0
NC
668 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
669 where = "no cmsg";
670 goto abort;
671 }
672 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
673 where = "wrong cmsg_len";
674 goto abort;
675 }
676 if(cmptr->cmsg_level != SOL_SOCKET) {
677 where = "wrong cmsg_level";
678 goto abort;
679 }
680 if(cmptr->cmsg_type != SCM_RIGHTS) {
681 where = "wrong cmsg_type";
682 goto abort;
683 }
bf357333
NC
684
685 got_fd = *(int*)CMSG_DATA(cmptr);
686 /* For our last little bit of trickery, put the file descriptor
687 back into Perl_debug_log, as if we never actually closed it
688 */
808ad2d0
NC
689 if(got_fd != debug_fd) {
690 if (dup2(got_fd, debug_fd) == -1) {
691 where = "dup2";
692 goto abort;
693 }
694 }
2aa47728 695 sv_dump(target);
bf357333 696
2aa47728
NC
697 PerlIO_flush(Perl_debug_log);
698
808ad2d0 699 got = write(sock, &success, sizeof(success));
2aa47728
NC
700
701 if(got < 0) {
808ad2d0
NC
702 where = "write failed";
703 goto abort;
2aa47728 704 }
808ad2d0
NC
705 if(got < sizeof(success)) {
706 where = "short write";
707 goto abort;
2aa47728
NC
708 }
709 }
710 _exit(0);
808ad2d0
NC
711 abort:
712 {
713 int send_errno = errno;
714 unsigned char length = (unsigned char) strlen(where);
715 struct iovec failure[3] = {
716 {(void*)&send_errno, sizeof(send_errno)},
717 {&length, 1},
718 {(void*)where, length}
719 };
720 int got = writev(sock, failure, 3);
721 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
722 in the parent if we try to read from the socketpair after the
723 child has exited, even if there was data to read.
724 So sleep a bit to give the parent a fighting chance of
725 reading the data. */
726 sleep(2);
727 _exit((got == -1) ? errno : 0);
728 }
bf357333 729 /* End of child. */
2aa47728 730 }
41e4abd8 731 PL_dumper_fd = fd[0];
2aa47728
NC
732 close(fd[1]);
733 }
734#endif
735
ff0cee69
PP
736 /* We must account for everything. */
737
738 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
739 /* Do this now, because destroying ops can cause new SVs to be generated
740 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
741 PL_curcop to point to a valid op from which the filename structure
742 member is copied. */
743 PL_curcop = &PL_compiling;
3280af22 744 if (PL_main_root) {
4e380990
DM
745 /* ensure comppad/curpad to refer to main's pad */
746 if (CvPADLIST(PL_main_cv)) {
747 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
748 }
3280af22 749 op_free(PL_main_root);
5f66b61c 750 PL_main_root = NULL;
a0d0e21e 751 }
5f66b61c 752 PL_main_start = NULL;
3280af22 753 SvREFCNT_dec(PL_main_cv);
601f1833 754 PL_main_cv = NULL;
24d3c518 755 PL_dirty = TRUE;
ff0cee69 756
13621cfb
NIS
757 /* Tell PerlIO we are about to tear things apart in case
758 we have layers which are using resources that should
759 be cleaned up now.
760 */
761
762 PerlIO_destruct(aTHX);
763
3280af22 764 if (PL_sv_objcount) {
a0d0e21e
LW
765 /*
766 * Try to destruct global references. We do this first so that the
767 * destructors and destructees still exist. Some sv's might remain.
768 * Non-referenced objects are on their own.
769 */
a0d0e21e 770 sv_clean_objs();
bf9cdc68 771 PL_sv_objcount = 0;
a0de6cf5 772 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 773 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
774 }
775
5cd24f17 776 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 777 SvREFCNT_dec(PL_warnhook);
a0714e2c 778 PL_warnhook = NULL;
3280af22 779 SvREFCNT_dec(PL_diehook);
a0714e2c 780 PL_diehook = NULL;
5cd24f17 781
4b556e6c 782 /* call exit list functions */
3280af22 783 while (PL_exitlistlen-- > 0)
acfe0abc 784 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 785
3280af22 786 Safefree(PL_exitlist);
4b556e6c 787
1c4916e5
CB
788 PL_exitlist = NULL;
789 PL_exitlistlen = 0;
790
a3e6e81e
NC
791 SvREFCNT_dec(PL_registered_mros);
792
551a8b83 793 /* jettison our possibly duplicated environment */
4b647fb0
DM
794 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
795 * so we certainly shouldn't free it here
796 */
2f42fcb0 797#ifndef PERL_MICRO
4b647fb0 798#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 799 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
800#ifdef USE_ITHREADS
801 /* only main thread can free environ[0] contents */
802 && PL_curinterp == aTHX
803#endif
804 )
805 {
551a8b83
JH
806 I32 i;
807
808 for (i = 0; environ[i]; i++)
4b420006 809 safesysfree(environ[i]);
0631ea03 810
4b420006
JH
811 /* Must use safesysfree() when working with environ. */
812 safesysfree(environ);
551a8b83
JH
813
814 environ = PL_origenviron;
815 }
816#endif
2f42fcb0 817#endif /* !PERL_MICRO */
551a8b83 818
30985c42
JH
819 if (destruct_level == 0) {
820
821 DEBUG_P(debprofdump());
822
823#if defined(PERLIO_LAYERS)
824 /* No more IO - including error messages ! */
825 PerlIO_cleanup(aTHX);
826#endif
827
828 CopFILE_free(&PL_compiling);
829 CopSTASH_free(&PL_compiling);
830
831 /* The exit() function will do everything that needs doing. */
832 return STATUS_EXIT;
833 }
834
804ffa60 835 /* reset so print() ends up where we expect */
a0714e2c 836 setdefout(NULL);
804ffa60 837
5f8cb046
DM
838#ifdef USE_ITHREADS
839 /* the syntax tree is shared between clones
840 * so op_free(PL_main_root) only ReREFCNT_dec's
841 * REGEXPs in the parent interpreter
842 * we need to manually ReREFCNT_dec for the clones
843 */
5f8cb046 844 SvREFCNT_dec(PL_regex_padav);
7d49f689 845 PL_regex_padav = NULL;
5f8cb046
DM
846 PL_regex_pad = NULL;
847#endif
848
ad64d0ec 849 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
850 PL_stashcache = NULL;
851
5f05dabc
PP
852 /* loosen bonds of global variables */
853
2f9285f8
DM
854 /* XXX can PL_parser still be non-null here? */
855 if(PL_parser && PL_parser->rsfp) {
856 (void)PerlIO_close(PL_parser->rsfp);
857 PL_parser->rsfp = NULL;
8ebc5c01
PP
858 }
859
84386e14
RGS
860 if (PL_minus_F) {
861 Safefree(PL_splitstr);
862 PL_splitstr = NULL;
863 }
864
8ebc5c01 865 /* switches */
3280af22
NIS
866 PL_minus_n = FALSE;
867 PL_minus_p = FALSE;
868 PL_minus_l = FALSE;
869 PL_minus_a = FALSE;
870 PL_minus_F = FALSE;
871 PL_doswitches = FALSE;
599cee73 872 PL_dowarn = G_WARN_OFF;
3280af22
NIS
873 PL_doextract = FALSE;
874 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
875 PL_unsafe = FALSE;
876
877 Safefree(PL_inplace);
bd61b366 878 PL_inplace = NULL;
a7cb1f99 879 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
880
881 if (PL_e_script) {
882 SvREFCNT_dec(PL_e_script);
a0714e2c 883 PL_e_script = NULL;
8ebc5c01
PP
884 }
885
bf9cdc68
RG
886 PL_perldb = 0;
887
8ebc5c01
PP
888 /* magical thingies */
889
e23d9e2f
CS
890 SvREFCNT_dec(PL_ofsgv); /* *, */
891 PL_ofsgv = NULL;
5f05dabc 892
7889fe52 893 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 894 PL_ors_sv = NULL;
8ebc5c01 895
3280af22 896 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 897 PL_rs = NULL;
dc92893f 898
d33b2eba 899 Safefree(PL_osname); /* $^O */
bd61b366 900 PL_osname = NULL;
5f05dabc 901
3280af22 902 SvREFCNT_dec(PL_statname);
a0714e2c
SS
903 PL_statname = NULL;
904 PL_statgv = NULL;
5f05dabc 905
8ebc5c01
PP
906 /* defgv, aka *_ should be taken care of elsewhere */
907
8ebc5c01 908 /* clean up after study() */
3280af22 909 SvREFCNT_dec(PL_lastscream);
a0714e2c 910 PL_lastscream = NULL;
3280af22
NIS
911 Safefree(PL_screamfirst);
912 PL_screamfirst = 0;
913 Safefree(PL_screamnext);
914 PL_screamnext = 0;
8ebc5c01 915
7d5ea4e7
GS
916 /* float buffer */
917 Safefree(PL_efloatbuf);
bd61b366 918 PL_efloatbuf = NULL;
7d5ea4e7
GS
919 PL_efloatsize = 0;
920
8ebc5c01 921 /* startup and shutdown function lists */
3280af22 922 SvREFCNT_dec(PL_beginav);
5a837c8f 923 SvREFCNT_dec(PL_beginav_save);
3280af22 924 SvREFCNT_dec(PL_endav);
7d30b5c4 925 SvREFCNT_dec(PL_checkav);
ece599bd 926 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
927 SvREFCNT_dec(PL_unitcheckav);
928 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 929 SvREFCNT_dec(PL_initav);
7d49f689
NC
930 PL_beginav = NULL;
931 PL_beginav_save = NULL;
932 PL_endav = NULL;
933 PL_checkav = NULL;
934 PL_checkav_save = NULL;
3c10abe3
AG
935 PL_unitcheckav = NULL;
936 PL_unitcheckav_save = NULL;
7d49f689 937 PL_initav = NULL;
5618dfe8 938
8ebc5c01 939 /* shortcuts just get cleared */
a0714e2c
SS
940 PL_envgv = NULL;
941 PL_incgv = NULL;
942 PL_hintgv = NULL;
943 PL_errgv = NULL;
944 PL_argvgv = NULL;
945 PL_argvoutgv = NULL;
946 PL_stdingv = NULL;
947 PL_stderrgv = NULL;
948 PL_last_in_gv = NULL;
949 PL_replgv = NULL;
950 PL_DBgv = NULL;
951 PL_DBline = NULL;
952 PL_DBsub = NULL;
953 PL_DBsingle = NULL;
954 PL_DBtrace = NULL;
955 PL_DBsignal = NULL;
601f1833 956 PL_DBcv = NULL;
7d49f689 957 PL_dbargs = NULL;
5c284bb0 958 PL_debstash = NULL;
8ebc5c01 959
7a1c5554 960 SvREFCNT_dec(PL_argvout_stack);
7d49f689 961 PL_argvout_stack = NULL;
8ebc5c01 962
5c831c24 963 SvREFCNT_dec(PL_modglobal);
5c284bb0 964 PL_modglobal = NULL;
5c831c24 965 SvREFCNT_dec(PL_preambleav);
7d49f689 966 PL_preambleav = NULL;
5c831c24 967 SvREFCNT_dec(PL_subname);
a0714e2c 968 PL_subname = NULL;
ca0c25f6 969#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 970 SvREFCNT_dec(PL_pidstatus);
5c284bb0 971 PL_pidstatus = NULL;
ca0c25f6 972#endif
5c831c24 973 SvREFCNT_dec(PL_toptarget);
a0714e2c 974 PL_toptarget = NULL;
5c831c24 975 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
976 PL_bodytarget = NULL;
977 PL_formtarget = NULL;
5c831c24 978
d33b2eba 979 /* free locale stuff */
b9582b6a 980#ifdef USE_LOCALE_COLLATE
d33b2eba 981 Safefree(PL_collation_name);
bd61b366 982 PL_collation_name = NULL;
b9582b6a 983#endif
d33b2eba 984
b9582b6a 985#ifdef USE_LOCALE_NUMERIC
d33b2eba 986 Safefree(PL_numeric_name);
bd61b366 987 PL_numeric_name = NULL;
a453c169 988 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 989 PL_numeric_radix_sv = NULL;
b9582b6a 990#endif
d33b2eba 991
5c831c24
GS
992 /* clear utf8 character classes */
993 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
994 SvREFCNT_dec(PL_utf8_ascii);
995 SvREFCNT_dec(PL_utf8_alpha);
996 SvREFCNT_dec(PL_utf8_space);
997 SvREFCNT_dec(PL_utf8_cntrl);
998 SvREFCNT_dec(PL_utf8_graph);
999 SvREFCNT_dec(PL_utf8_digit);
1000 SvREFCNT_dec(PL_utf8_upper);
1001 SvREFCNT_dec(PL_utf8_lower);
1002 SvREFCNT_dec(PL_utf8_print);
1003 SvREFCNT_dec(PL_utf8_punct);
1004 SvREFCNT_dec(PL_utf8_xdigit);
1005 SvREFCNT_dec(PL_utf8_mark);
1006 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1007 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1008 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1009 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1010 SvREFCNT_dec(PL_utf8_idstart);
1011 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c 1012 PL_utf8_alnum = NULL;
a0714e2c
SS
1013 PL_utf8_ascii = NULL;
1014 PL_utf8_alpha = NULL;
1015 PL_utf8_space = NULL;
1016 PL_utf8_cntrl = NULL;
1017 PL_utf8_graph = NULL;
1018 PL_utf8_digit = NULL;
1019 PL_utf8_upper = NULL;
1020 PL_utf8_lower = NULL;
1021 PL_utf8_print = NULL;
1022 PL_utf8_punct = NULL;
1023 PL_utf8_xdigit = NULL;
1024 PL_utf8_mark = NULL;
1025 PL_utf8_toupper = NULL;
1026 PL_utf8_totitle = NULL;
1027 PL_utf8_tolower = NULL;
1028 PL_utf8_tofold = NULL;
1029 PL_utf8_idstart = NULL;
1030 PL_utf8_idcont = NULL;
5c831c24 1031
971a9dd3 1032 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1033 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1034 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1035 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1036 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1037 CopFILE_free(&PL_compiling);
1038 CopSTASH_free(&PL_compiling);
5c831c24 1039
a0d0e21e 1040 /* Prepare to destruct main symbol table. */
5f05dabc 1041
3280af22
NIS
1042 hv = PL_defstash;
1043 PL_defstash = 0;
a0d0e21e 1044 SvREFCNT_dec(hv);
5c831c24 1045 SvREFCNT_dec(PL_curstname);
a0714e2c 1046 PL_curstname = NULL;
a0d0e21e 1047
5a844595
GS
1048 /* clear queued errors */
1049 SvREFCNT_dec(PL_errors);
a0714e2c 1050 PL_errors = NULL;
5a844595 1051
dd69841b
BB
1052 SvREFCNT_dec(PL_isarev);
1053
a0d0e21e 1054 FREETMPS;
9b387841 1055 if (destruct_level >= 2) {
3280af22 1056 if (PL_scopestack_ix != 0)
9b387841
NC
1057 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1058 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1059 (long)PL_scopestack_ix);
3280af22 1060 if (PL_savestack_ix != 0)
9b387841
NC
1061 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1062 "Unbalanced saves: %ld more saves than restores\n",
1063 (long)PL_savestack_ix);
3280af22 1064 if (PL_tmps_floor != -1)
9b387841
NC
1065 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1066 (long)PL_tmps_floor + 1);
a0d0e21e 1067 if (cxstack_ix != -1)
9b387841
NC
1068 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1069 (long)cxstack_ix + 1);
a0d0e21e 1070 }
8990e307
LW
1071
1072 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1073
1074 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1075 while (sv_clean_all() > 2)
5226ed68
JH
1076 ;
1077
d4777f27
GS
1078 AvREAL_off(PL_fdpid); /* no surviving entries */
1079 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1080 PL_fdpid = NULL;
d33b2eba 1081
6c644e78
GS
1082#ifdef HAVE_INTERP_INTERN
1083 sys_intern_clear();
1084#endif
1085
6e72f9df
PP
1086 /* Destruct the global string table. */
1087 {
1088 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1089 * so that sv_free() won't fail on them.
80459961
NC
1090 * Now that the global string table is using a single hunk of memory
1091 * for both HE and HEK, we either need to explicitly unshare it the
1092 * correct way, or actually free things here.
6e72f9df 1093 */
80459961
NC
1094 I32 riter = 0;
1095 const I32 max = HvMAX(PL_strtab);
c4420975 1096 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1097 HE *hent = array[0];
1098
6e72f9df 1099 for (;;) {
0453d815 1100 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1101 HE * const next = HeNEXT(hent);
9014280d 1102 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1103 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1104 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1105 Safefree(hent);
1106 hent = next;
6e72f9df
PP
1107 }
1108 if (!hent) {
1109 if (++riter > max)
1110 break;
1111 hent = array[riter];
1112 }
1113 }
80459961
NC
1114
1115 Safefree(array);
1116 HvARRAY(PL_strtab) = 0;
1117 HvTOTALKEYS(PL_strtab) = 0;
1118 HvFILL(PL_strtab) = 0;
6e72f9df 1119 }
3280af22 1120 SvREFCNT_dec(PL_strtab);
6e72f9df 1121
e652bb2f 1122#ifdef USE_ITHREADS
c21d1a0f 1123 /* free the pointer tables used for cloning */
a0739874 1124 ptr_table_free(PL_ptr_table);
bf9cdc68 1125 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1126#endif
a0739874 1127
d33b2eba
GS
1128 /* free special SVs */
1129
1130 SvREFCNT(&PL_sv_yes) = 0;
1131 sv_clear(&PL_sv_yes);
1132 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1133 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1134
1135 SvREFCNT(&PL_sv_no) = 0;
1136 sv_clear(&PL_sv_no);
1137 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1138 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1139
9f375a43
DM
1140 {
1141 int i;
1142 for (i=0; i<=2; i++) {
1143 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1144 sv_clear(PERL_DEBUG_PAD(i));
1145 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1146 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1147 }
1148 }
1149
0453d815 1150 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1151 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1152
eba0f806
DM
1153#ifdef DEBUG_LEAKING_SCALARS
1154 if (PL_sv_count != 0) {
1155 SV* sva;
1156 SV* sv;
1157 register SV* svend;
1158
ad64d0ec 1159 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1160 svend = &sva[SvREFCNT(sva)];
1161 for (sv = sva + 1; sv < svend; ++sv) {
1162 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1163 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1164 " flags=0x%"UVxf
fd0854ff 1165 " refcnt=%"UVuf pTHX__FORMAT "\n"
cbe56f1d 1166 "\tallocated at %s:%d %s %s%s; serial %"UVuf"\n",
574b8821
NC
1167 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1168 pTHX__VALUE,
fd0854ff
DM
1169 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1170 sv->sv_debug_line,
1171 sv->sv_debug_inpad ? "for" : "by",
1172 sv->sv_debug_optype ?
1173 PL_op_name[sv->sv_debug_optype]: "(none)",
cbe56f1d
DM
1174 sv->sv_debug_cloned ? " (cloned)" : "",
1175 sv->sv_debug_serial
fd0854ff 1176 );
2aa47728 1177#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1178 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1179#endif
eba0f806
DM
1180 }
1181 }
1182 }
1183 }
2aa47728
NC
1184#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1185 {
1186 int status;
1187 fd_set rset;
1188 /* Wait for up to 4 seconds for child to terminate.
1189 This seems to be the least effort way of timing out on reaping
1190 its exit status. */
1191 struct timeval waitfor = {4, 0};
41e4abd8 1192 int sock = PL_dumper_fd;
2aa47728
NC
1193
1194 shutdown(sock, 1);
1195 FD_ZERO(&rset);
1196 FD_SET(sock, &rset);
1197 select(sock + 1, &rset, NULL, NULL, &waitfor);
1198 waitpid(child, &status, WNOHANG);
1199 close(sock);
1200 }
1201#endif
eba0f806 1202#endif
77abb4c6
NC
1203#ifdef DEBUG_LEAKING_SCALARS_ABORT
1204 if (PL_sv_count)
1205 abort();
1206#endif
bf9cdc68 1207 PL_sv_count = 0;
eba0f806 1208
f1fac472
NC
1209#ifdef PERL_DEBUG_READONLY_OPS
1210 free(PL_slabs);
1211 PL_slabs = NULL;
1212 PL_slab_count = 0;
1213#endif
eba0f806 1214
56a2bab7 1215#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1216 /* No more IO - including error messages ! */
1217 PerlIO_cleanup(aTHX);
1218#endif
1219
9f4bd222 1220 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1221 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1222 for no arg - and will try and SvREFCNT_dec it.
1223 */
1224 SvREFCNT(&PL_sv_undef) = 0;
1225 SvREADONLY_off(&PL_sv_undef);
1226
3280af22 1227 Safefree(PL_origfilename);
bd61b366 1228 PL_origfilename = NULL;
3280af22 1229 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1230 PL_reg_start_tmp = (char**)NULL;
1231 PL_reg_start_tmpl = 0;
43c5f42d 1232 Safefree(PL_reg_curpm);
82ba1be6 1233 Safefree(PL_reg_poscache);
dd28f7bb 1234 free_tied_hv_pool();
3280af22 1235 Safefree(PL_op_mask);
cf36064f 1236 Safefree(PL_psig_name);
bf9cdc68 1237 PL_psig_name = (SV**)NULL;
d525a7b2 1238 PL_psig_ptr = (SV**)NULL;
ce08f86c 1239 Safefree(PL_psig_pend);
bf9cdc68 1240 PL_psig_pend = (int*)NULL;
31c91b43
LR
1241 {
1242 /* We need to NULL PL_psig_pend first, so that
1243 signal handlers know not to use it */
1244 int *psig_save = PL_psig_pend;
1245 PL_psig_pend = (int*)NULL;
1246 Safefree(psig_save);
1247 }
a0714e2c 1248 PL_formfeed = NULL;
6e72f9df 1249 nuke_stacks();
bf9cdc68
RG
1250 PL_tainting = FALSE;
1251 PL_taint_warn = FALSE;
3280af22 1252 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1253 PL_debug = 0;
ac27b0f5 1254
a0d0e21e 1255 DEBUG_P(debprofdump());
d33b2eba 1256
e5dd39fc 1257#ifdef USE_REENTRANT_API
10bc17b6 1258 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1259#endif
1260
612f20c3
GS
1261 sv_free_arenas();
1262
5d9a96ca
DM
1263 while (PL_regmatch_slab) {
1264 regmatch_slab *s = PL_regmatch_slab;
1265 PL_regmatch_slab = PL_regmatch_slab->next;
1266 Safefree(s);
1267 }
1268
fc36a67e
PP
1269 /* As the absolutely last thing, free the non-arena SV for mess() */
1270
3280af22 1271 if (PL_mess_sv) {
f350b448
NC
1272 /* we know that type == SVt_PVMG */
1273
9c63abab 1274 /* it could have accumulated taint magic */
f350b448
NC
1275 MAGIC* mg;
1276 MAGIC* moremagic;
1277 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1278 moremagic = mg->mg_moremagic;
1279 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1280 && mg->mg_len >= 0)
1281 Safefree(mg->mg_ptr);
1282 Safefree(mg);
9c63abab 1283 }
f350b448 1284
fc36a67e 1285 /* we know that type >= SVt_PV */
8bd4d4c5 1286 SvPV_free(PL_mess_sv);
3280af22
NIS
1287 Safefree(SvANY(PL_mess_sv));
1288 Safefree(PL_mess_sv);
a0714e2c 1289 PL_mess_sv = NULL;
fc36a67e 1290 }
37038d91 1291 return STATUS_EXIT;
79072805
LW
1292}
1293
954c1994
GS
1294/*
1295=for apidoc perl_free
1296
1297Releases a Perl interpreter. See L<perlembed>.
1298
1299=cut
1300*/
1301
79072805 1302void
0cb96387 1303perl_free(pTHXx)
79072805 1304{
5174512c
NC
1305 dVAR;
1306
7918f24d
NC
1307 PERL_ARGS_ASSERT_PERL_FREE;
1308
c301d606
DM
1309 if (PL_veto_cleanup)
1310 return;
1311
7cb608b5 1312#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1313 {
1314 /*
1315 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1316 * value as we're probably hunting memory leaks then
1317 */
1318 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1319 if (!s || atoi(s) == 0) {
4fd0a9b8 1320 const U32 old_debug = PL_debug;
55ef9aae
MHM
1321 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1322 thread at thread exit. */
4fd0a9b8
NC
1323 if (DEBUG_m_TEST) {
1324 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1325 "free this thread's memory\n");
1326 PL_debug &= ~ DEBUG_m_FLAG;
1327 }
55ef9aae
MHM
1328 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1329 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1330 PL_debug = old_debug;
55ef9aae
MHM
1331 }
1332 }
7cb608b5
NC
1333#endif
1334
acfe0abc 1335#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1336# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1337 {
acfe0abc 1338# ifdef NETWARE
7af12a34 1339 void *host = nw_internal_host;
acfe0abc 1340# else
7af12a34 1341 void *host = w32_internal_host;
acfe0abc 1342# endif
7af12a34 1343 PerlMem_free(aTHXx);
acfe0abc 1344# ifdef NETWARE
7af12a34 1345 nw_delete_internal_host(host);
acfe0abc 1346# else
7af12a34 1347 win32_delete_internal_host(host);
acfe0abc 1348# endif
7af12a34 1349 }
1c0ca838
GS
1350# else
1351 PerlMem_free(aTHXx);
1352# endif
acfe0abc
GS
1353#else
1354 PerlMem_free(aTHXx);
76e3520e 1355#endif
79072805
LW
1356}
1357
b7f7fff6 1358#if defined(USE_ITHREADS)
aebd1ac7
GA
1359/* provide destructors to clean up the thread key when libperl is unloaded */
1360#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1361
826955bd 1362#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1363#pragma fini "perl_fini"
666ad1ec
GA
1364#elif defined(__sun) && !defined(__GNUC__)
1365#pragma fini (perl_fini)
aebd1ac7
GA
1366#endif
1367
0dbb1585
AL
1368static void
1369#if defined(__GNUC__)
1370__attribute__((destructor))
aebd1ac7 1371#endif
de009b76 1372perl_fini(void)
aebd1ac7 1373{
27da23d5 1374 dVAR;
c301d606 1375 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1376 FREE_THREAD_KEY;
1377}
1378
1379#endif /* WIN32 */
1380#endif /* THREADS */
1381
4b556e6c 1382void
864dbfa3 1383Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1384{
97aff369 1385 dVAR;
3280af22
NIS
1386 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1387 PL_exitlist[PL_exitlistlen].fn = fn;
1388 PL_exitlist[PL_exitlistlen].ptr = ptr;
1389 ++PL_exitlistlen;
4b556e6c
JD
1390}
1391
56cf6df8
RGS
1392#ifdef HAS_PROCSELFEXE
1393/* This is a function so that we don't hold on to MAXPATHLEN
1394 bytes of stack longer than necessary
1395 */
1396STATIC void
e1ec3a88 1397S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1398{
1399 char buf[MAXPATHLEN];
1400 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1401
1402 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1403 includes a spurious NUL which will cause $^X to fail in system
1404 or backticks (this will prevent extensions from being built and
1405 many tests from working). readlink is not meant to add a NUL.
1406 Normal readlink works fine.
1407 */
1408 if (len > 0 && buf[len-1] == '\0') {
1409 len--;
1410 }
1411
1412 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1413 returning the text "unknown" from the readlink rather than the path
1414 to the executable (or returning an error from the readlink). Any valid
1415 path has a '/' in it somewhere, so use that to validate the result.
1416 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1417 */
1418 if (len > 0 && memchr(buf, '/', len)) {
1419 sv_setpvn(sv,buf,len);
1420 }
1421 else {
1422 sv_setpv(sv,arg0);
1423 }
1424}
1425#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1426
1427STATIC void
1428S_set_caret_X(pTHX) {
97aff369 1429 dVAR;
fafc274c 1430 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1431 if (tmpgv) {
1432#ifdef HAS_PROCSELFEXE
1433 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1434#else
1435#ifdef OS2
c69033f2 1436 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1437#else
c69033f2 1438 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1439#endif
1440#endif
1441 }
1442}
1443
954c1994
GS
1444/*
1445=for apidoc perl_parse
1446
1447Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1448
1449=cut
1450*/
1451
79072805 1452int
0cb96387 1453perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1454{
27da23d5 1455 dVAR;
6224f72b 1456 I32 oldscope;
6224f72b 1457 int ret;
db36c5a1 1458 dJMPENV;
8d063cd8 1459
7918f24d
NC
1460 PERL_ARGS_ASSERT_PERL_PARSE;
1461#ifndef MULTIPLICITY
ed6c66dd 1462 PERL_UNUSED_ARG(my_perl);
7918f24d 1463#endif
9d4ba2ae 1464
b0891165
JH
1465#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1466 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1467 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1468 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1469 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1470 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1471 if (!PL_rehash_seed_set)
1472 PL_rehash_seed = get_hash_seed();
b0891165 1473 {
9d4ba2ae 1474 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1475
1b6737cc
AL
1476 if (s && (atoi(s) == 1))
1477 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1478 }
1479#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1480
3280af22 1481 PL_origargc = argc;
e2975953 1482 PL_origargv = argv;
a0d0e21e 1483
a2722ac9
GA
1484 if (PL_origalen != 0) {
1485 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1486 }
1487 else {
3cb9023d
JH
1488 /* Set PL_origalen be the sum of the contiguous argv[]
1489 * elements plus the size of the env in case that it is
e9137a8e 1490 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1491 * as the maximum modifiable length of $0. In the worst case
1492 * the area we are able to modify is limited to the size of
43c32782 1493 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1494 * --jhi */
e1ec3a88 1495 const char *s = NULL;
54bfe034 1496 int i;
1b6737cc 1497 const UV mask =
7d8e7db3 1498 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1499 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1500 const UV aligned =
43c32782
JH
1501 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1502
1503 /* See if all the arguments are contiguous in memory. Note
1504 * that 'contiguous' is a loose term because some platforms
1505 * align the argv[] and the envp[]. If the arguments look
1506 * like non-aligned, assume that they are 'strictly' or
1507 * 'traditionally' contiguous. If the arguments look like
1508 * aligned, we just check that they are within aligned
1509 * PTRSIZE bytes. As long as no system has something bizarre
1510 * like the argv[] interleaved with some other data, we are
1511 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1512 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1513 while (*s) s++;
1514 for (i = 1; i < PL_origargc; i++) {
1515 if ((PL_origargv[i] == s + 1
43c32782 1516#ifdef OS2
c8941eeb 1517 || PL_origargv[i] == s + 2
43c32782 1518#endif
c8941eeb
JH
1519 )
1520 ||
1521 (aligned &&
1522 (PL_origargv[i] > s &&
1523 PL_origargv[i] <=
1524 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1525 )
1526 {
1527 s = PL_origargv[i];
1528 while (*s) s++;
1529 }
1530 else
1531 break;
54bfe034 1532 }
54bfe034 1533 }
a4a109c2
JD
1534
1535#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1536 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1537 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1538 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1539 ||
1540 (aligned &&
1541 (PL_origenviron[0] > s &&
1542 PL_origenviron[0] <=
1543 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1544 )
1545 {
9d419b5f 1546#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1547 s = PL_origenviron[0];
1548 while (*s) s++;
1549#endif
bd61b366 1550 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1551 /* Force copy of environment. */
1552 for (i = 1; PL_origenviron[i]; i++) {
1553 if (PL_origenviron[i] == s + 1
1554 ||
1555 (aligned &&
1556 (PL_origenviron[i] > s &&
1557 PL_origenviron[i] <=
1558 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1559 )
1560 {
1561 s = PL_origenviron[i];
1562 while (*s) s++;
1563 }
1564 else
1565 break;
54bfe034 1566 }
43c32782 1567 }
54bfe034 1568 }
a4a109c2
JD
1569#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1570
2d2af554 1571 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1572 }
1573
3280af22 1574 if (PL_do_undump) {
a0d0e21e
LW
1575
1576 /* Come here if running an undumped a.out. */
1577
3280af22
NIS
1578 PL_origfilename = savepv(argv[0]);
1579 PL_do_undump = FALSE;
a0d0e21e 1580 cxstack_ix = -1; /* start label stack again */
748a9306 1581 init_ids();
b7975bdd
NC
1582 assert (!PL_tainted);
1583 TAINT;
1584 S_set_caret_X(aTHX);
1585 TAINT_NOT;
a0d0e21e
LW
1586 init_postdump_symbols(argc,argv,env);
1587 return 0;
1588 }
1589
3280af22 1590 if (PL_main_root) {
3280af22 1591 op_free(PL_main_root);
5f66b61c 1592 PL_main_root = NULL;
ff0cee69 1593 }
5f66b61c 1594 PL_main_start = NULL;
3280af22 1595 SvREFCNT_dec(PL_main_cv);
601f1833 1596 PL_main_cv = NULL;
79072805 1597
3280af22
NIS
1598 time(&PL_basetime);
1599 oldscope = PL_scopestack_ix;
599cee73 1600 PL_dowarn = G_WARN_OFF;
f86702cc 1601
14dd3ad8 1602 JMPENV_PUSH(ret);
6224f72b 1603 switch (ret) {
312caa8e 1604 case 0:
14dd3ad8 1605 parse_body(env,xsinit);
3c10abe3
AG
1606 if (PL_unitcheckav)
1607 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1608 if (PL_checkav)
1609 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1610 ret = 0;
1611 break;
6224f72b
GS
1612 case 1:
1613 STATUS_ALL_FAILURE;
1614 /* FALL THROUGH */
1615 case 2:
1616 /* my_exit() was called */
3280af22 1617 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1618 LEAVE;
1619 FREETMPS;
3280af22 1620 PL_curstash = PL_defstash;
3c10abe3
AG
1621 if (PL_unitcheckav)
1622 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1623 if (PL_checkav)
1624 call_list(oldscope, PL_checkav);
37038d91 1625 ret = STATUS_EXIT;
14dd3ad8 1626 break;
6224f72b 1627 case 3:
bf49b057 1628 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1629 ret = 1;
1630 break;
6224f72b 1631 }
14dd3ad8
GS
1632 JMPENV_POP;
1633 return ret;
1634}
1635
4a5df386
NC
1636/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1637 miniperl, and we need to see those flags reflected in the values here. */
1638
1639/* What this returns is subject to change. Use the public interface in Config.
1640 */
1641static void
1642S_Internals_V(pTHX_ CV *cv)
1643{
1644 dXSARGS;
1645#ifdef LOCAL_PATCH_COUNT
1646 const int local_patch_count = LOCAL_PATCH_COUNT;
1647#else
1648 const int local_patch_count = 0;
1649#endif
2dc296d2 1650 const int entries = 3 + local_patch_count;
4a5df386
NC
1651 int i;
1652 static char non_bincompat_options[] =
1653# ifdef DEBUGGING
1654 " DEBUGGING"
1655# endif
1656# ifdef NO_MATHOMS
0d311fbe 1657 " NO_MATHOMS"
4a5df386
NC
1658# endif
1659# ifdef PERL_DISABLE_PMC
1660 " PERL_DISABLE_PMC"
1661# endif
1662# ifdef PERL_DONT_CREATE_GVSV
1663 " PERL_DONT_CREATE_GVSV"
1664# endif
1665# ifdef PERL_IS_MINIPERL
1666 " PERL_IS_MINIPERL"
1667# endif
1668# ifdef PERL_MALLOC_WRAP
1669 " PERL_MALLOC_WRAP"
1670# endif
1671# ifdef PERL_MEM_LOG
1672 " PERL_MEM_LOG"
1673# endif
1674# ifdef PERL_MEM_LOG_NOIMPL
1675 " PERL_MEM_LOG_NOIMPL"
1676# endif
1677# ifdef PERL_USE_DEVEL
1678 " PERL_USE_DEVEL"
1679# endif
1680# ifdef PERL_USE_SAFE_PUTENV
1681 " PERL_USE_SAFE_PUTENV"
1682# endif
de618ee4
NC
1683# ifdef USE_ATTRIBUTES_FOR_PERLIO
1684 " USE_ATTRIBUTES_FOR_PERLIO"
1685# endif
4a5df386
NC
1686# ifdef USE_FAST_STDIO
1687 " USE_FAST_STDIO"
1688# endif
5a8d8935
NC
1689# ifdef USE_PERL_ATOF
1690 " USE_PERL_ATOF"
1691# endif
0d311fbe
NC
1692# ifdef USE_SITECUSTOMIZE
1693 " USE_SITECUSTOMIZE"
1694# endif
4a5df386
NC
1695 ;
1696 PERL_UNUSED_ARG(cv);
1697 PERL_UNUSED_ARG(items);
1698
1699 EXTEND(SP, entries);
1700
1701 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1702 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1703 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1704
1705#ifdef __DATE__
1706# ifdef __TIME__
1707 PUSHs(Perl_newSVpvn_flags(aTHX_
1708 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1709 SVs_TEMP));
1710# else
1711 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1712 SVs_TEMP));
1713# endif
1714#else
1715 PUSHs(&PL_sv_undef);
1716#endif
1717
4a5df386
NC
1718 for (i = 1; i <= local_patch_count; i++) {
1719 /* This will be an undef, if PL_localpatches[i] is NULL. */
1720 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1721 }
1722
1723 XSRETURN(entries);
1724}
1725
be71fc8f
NC
1726#define INCPUSH_UNSHIFT 0x01
1727#define INCPUSH_ADD_OLD_VERS 0x02
1728#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1729#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1730#define INCPUSH_NOT_BASEDIR 0x10
1731#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1732#define INCPUSH_ADD_SUB_DIRS \
1733 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1734
312caa8e 1735STATIC void *
14dd3ad8 1736S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1737{
27da23d5 1738 dVAR;
2f9285f8 1739 PerlIO *rsfp;
312caa8e 1740 int argc = PL_origargc;
8f42b153 1741 char **argv = PL_origargv;
e1ec3a88 1742 const char *scriptname = NULL;
312caa8e 1743 VOL bool dosearch = FALSE;
c7030b81 1744 register char c;
bd61b366 1745 const char *cddir = NULL;
ab019eaa 1746#ifdef USE_SITECUSTOMIZE
20ef40cf 1747 bool minus_f = FALSE;
ab019eaa 1748#endif
009d90df 1749 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1750 bool add_read_e_script = FALSE;
009d90df
DM
1751
1752 SvGROW(linestr_sv, 80);
76f68e9b 1753 sv_setpvs(linestr_sv,"");
312caa8e 1754
6224f72b 1755 init_main_stash();
54310121 1756
c7030b81
NC
1757 {
1758 const char *s;
6224f72b
GS
1759 for (argc--,argv++; argc > 0; argc--,argv++) {
1760 if (argv[0][0] != '-' || !argv[0][1])
1761 break;
6224f72b
GS
1762 s = argv[0]+1;
1763 reswitch:
47f56822 1764 switch ((c = *s)) {
729a02f2 1765 case 'C':
1d5472a9
GS
1766#ifndef PERL_STRICT_CR
1767 case '\r':
1768#endif
6224f72b
GS
1769 case ' ':
1770 case '0':
1771 case 'F':
1772 case 'a':
1773 case 'c':
1774 case 'd':
1775 case 'D':
1776 case 'h':
1777 case 'i':
1778 case 'l':
1779 case 'M':
1780 case 'm':
1781 case 'n':
1782 case 'p':
1783 case 's':
1784 case 'u':
1785 case 'U':
1786 case 'v':
599cee73
PM
1787 case 'W':
1788 case 'X':
6224f72b 1789 case 'w':
97bd5664 1790 if ((s = moreswitches(s)))
6224f72b
GS
1791 goto reswitch;
1792 break;
33b78306 1793
1dbad523 1794 case 't':
22f7c9c9 1795 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1796 if( !PL_tainting ) {
1797 PL_taint_warn = TRUE;
1798 PL_tainting = TRUE;
1799 }
1800 s++;
1801 goto reswitch;
6224f72b 1802 case 'T':
22f7c9c9 1803 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1804 PL_tainting = TRUE;
317ea90d 1805 PL_taint_warn = FALSE;
6224f72b
GS
1806 s++;
1807 goto reswitch;
f86702cc 1808
bc9b29db
RH
1809 case 'E':
1810 PL_minus_E = TRUE;
1811 /* FALL THROUGH */
6224f72b 1812 case 'e':
f20b2998 1813 forbid_setid('e', FALSE);
3280af22 1814 if (!PL_e_script) {
396482e1 1815 PL_e_script = newSVpvs("");
5486870f 1816 add_read_e_script = TRUE;
6224f72b
GS
1817 }
1818 if (*++s)
3280af22 1819 sv_catpv(PL_e_script, s);
6224f72b 1820 else if (argv[1]) {
3280af22 1821 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1822 argc--,argv++;
1823 }
1824 else
47f56822 1825 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1826 sv_catpvs(PL_e_script, "\n");
6224f72b 1827 break;
afe37c7d 1828
20ef40cf 1829 case 'f':
f5542d3a 1830#ifdef USE_SITECUSTOMIZE
20ef40cf 1831 minus_f = TRUE;
f5542d3a 1832#endif
20ef40cf
GA
1833 s++;
1834 goto reswitch;
1835
6224f72b 1836 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1837 forbid_setid('I', FALSE);
bd61b366 1838 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1839 argc--,argv++;
1840 }
6224f72b 1841 if (s && *s) {
0df16ed7 1842 STRLEN len = strlen(s);
55b4bc1c 1843 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1844 }
1845 else
a67e862a 1846 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1847 break;
6224f72b 1848 case 'S':
f20b2998 1849 forbid_setid('S', FALSE);
6224f72b
GS
1850 dosearch = TRUE;
1851 s++;
1852 goto reswitch;
1853 case 'V':
7edfd0ef
NC
1854 {
1855 SV *opts_prog;
1856
7edfd0ef 1857 if (*++s != ':') {
37ca4a5b 1858 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1859 }
1860 else {
1861 ++s;
1862 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1863 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1864 0, s, 0);
1865 s += strlen(s);
1866 }
37ca4a5b 1867 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1868 /* don't look for script or read stdin */
1869 scriptname = BIT_BUCKET;
1870 goto reswitch;
6224f72b 1871 }
6224f72b 1872 case 'x':
3280af22 1873 PL_doextract = TRUE;
6224f72b 1874 s++;
304334da 1875 if (*s)
f4c556ac 1876 cddir = s;
6224f72b
GS
1877 break;
1878 case 0:
1879 break;
1880 case '-':
1881 if (!*++s || isSPACE(*s)) {
1882 argc--,argv++;
1883 goto switch_end;
1884 }
1885 /* catch use of gnu style long options */
1886 if (strEQ(s, "version")) {
dd374669 1887 s = (char *)"v";
6224f72b
GS
1888 goto reswitch;
1889 }
1890 if (strEQ(s, "help")) {
dd374669 1891 s = (char *)"h";
6224f72b
GS
1892 goto reswitch;
1893 }
1894 s--;
1895 /* FALL THROUGH */
1896 default:
cea2e8a9 1897 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1898 }
1899 }
c7030b81
NC
1900 }
1901
6224f72b 1902 switch_end:
54310121 1903
c7030b81
NC
1904 {
1905 char *s;
1906
f675dbe5
CB
1907 if (
1908#ifndef SECURE_INTERNAL_GETENV
1909 !PL_tainting &&
1910#endif
cf756827 1911 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1912 {
74288ac8
GS
1913 while (isSPACE(*s))
1914 s++;
317ea90d 1915 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1916 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1917 PL_tainting = TRUE;
317ea90d
MS
1918 PL_taint_warn = FALSE;
1919 }
74288ac8 1920 else {
bd61b366 1921 char *popt_copy = NULL;
74288ac8 1922 while (s && *s) {
54913509 1923 const char *d;
74288ac8
GS
1924 while (isSPACE(*s))
1925 s++;
1926 if (*s == '-') {
1927 s++;
1928 if (isSPACE(*s))
1929 continue;
1930 }
4ea8f8fb 1931 d = s;
74288ac8
GS
1932 if (!*s)
1933 break;
2b622f1a 1934 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1935 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1936 while (++s && *s) {
1937 if (isSPACE(*s)) {
cf756827 1938 if (!popt_copy) {
bfa6c418
NC
1939 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1940 s = popt_copy + (s - d);
1941 d = popt_copy;
cf756827 1942 }
4ea8f8fb
MS
1943 *s++ = '\0';
1944 break;
1945 }
1946 }
1c4db469 1947 if (*d == 't') {
317ea90d
MS
1948 if( !PL_tainting ) {
1949 PL_taint_warn = TRUE;
1950 PL_tainting = TRUE;
1951 }
1c4db469 1952 } else {
97bd5664 1953 moreswitches(d);
1c4db469 1954 }
6224f72b 1955 }
6224f72b
GS
1956 }
1957 }
c7030b81 1958 }
a0d0e21e 1959
87e06404 1960#if defined(USE_SITECUSTOMIZE) && !defined(PERL_IS_MINIPERL)
20ef40cf 1961 if (!minus_f) {
404ad9dc
NC
1962 /* SITELIB_EXP is a function call on Win32.
1963 The games with local $! are to avoid setting errno if there is no
1964 sitecustomize script. */
1965 const char *const sitelib = SITELIB_EXP;
29a861e7 1966 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1967 Perl_newSVpvf(aTHX_
1968 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
20ef40cf
GA
1969 }
1970#endif
1971
6224f72b
GS
1972 if (!scriptname)
1973 scriptname = argv[0];
3280af22 1974 if (PL_e_script) {
6224f72b
GS
1975 argc++,argv--;
1976 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1977 }
bd61b366 1978 else if (scriptname == NULL) {
6224f72b
GS
1979#ifdef MSDOS
1980 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1981 moreswitches("h");
6224f72b
GS
1982#endif
1983 scriptname = "-";
1984 }
1985
b7975bdd
NC
1986 /* Set $^X early so that it can be used for relocatable paths in @INC */
1987 assert (!PL_tainted);
1988 TAINT;
1989 S_set_caret_X(aTHX);
1990 TAINT_NOT;
2cace6ac 1991 init_perllib();
6224f72b 1992
a52eba0e 1993 {
f20b2998 1994 bool suidscript = FALSE;
829372d3 1995
cc69b689 1996 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 1997
2f9285f8 1998 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 1999 linestr_sv, rsfp);
6224f72b 2000
64ca3a65 2001#ifndef PERL_MICRO
a52eba0e
NC
2002# if defined(SIGCHLD) || defined(SIGCLD)
2003 {
2004# ifndef SIGCHLD
2005# define SIGCHLD SIGCLD
2006# endif
2007 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2008 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2009 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2010 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2011 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2012 }
0b5b802d 2013 }
a52eba0e 2014# endif
64ca3a65 2015#endif
0b5b802d 2016
e37778c2 2017 if (PL_doextract) {
faef540c 2018
f20b2998 2019 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2020 setuid scripts. */
2021 forbid_setid('x', suidscript);
f20b2998 2022 /* Hence you can't get here if suidscript is true */
faef540c 2023
2f9285f8 2024 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2025 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2026 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2027 }
f4c556ac 2028 }
6224f72b 2029
ea726b52 2030 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2031 CvUNIQUE_on(PL_compcv);
2032
dd2155a4 2033 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2034
dd69841b
BB
2035 PL_isarev = newHV();
2036
0c4f7ff0 2037 boot_core_PerlIO();
6224f72b 2038 boot_core_UNIVERSAL();
e1a479c5 2039 boot_core_mro();
4a5df386 2040 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2041
2042 if (xsinit)
acfe0abc 2043 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2044#ifndef PERL_MICRO
d0d72822 2045#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2046 init_os_extras();
6224f72b 2047#endif
64ca3a65 2048#endif
6224f72b 2049
29209bc5 2050#ifdef USE_SOCKS
1b9c9cf5
DH
2051# ifdef HAS_SOCKS5_INIT
2052 socks5_init(argv[0]);
2053# else
29209bc5 2054 SOCKSinit(argv[0]);
1b9c9cf5 2055# endif
ac27b0f5 2056#endif
29209bc5 2057
6224f72b
GS
2058 init_predump_symbols();
2059 /* init_postdump_symbols not currently designed to be called */
2060 /* more than once (ENV isn't cleared first, for example) */
2061 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2062 if (!PL_do_undump)
6224f72b
GS
2063 init_postdump_symbols(argc,argv,env);
2064
27da23d5
JH
2065 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2066 * or explicitly in some platforms.
085a54d9 2067 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2068 * look like the user wants to use UTF-8. */
a0fd4948 2069#if defined(__SYMBIAN32__)
27da23d5
JH
2070 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2071#endif
e27b5b51 2072# ifndef PERL_IS_MINIPERL
06e66572
JH
2073 if (PL_unicode) {
2074 /* Requires init_predump_symbols(). */
a05d7ebb 2075 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2076 IO* io;
2077 PerlIO* fp;
2078 SV* sv;
2079
a05d7ebb 2080 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2081 * and the default open disciplines. */
a05d7ebb
JH
2082 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2083 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2084 (fp = IoIFP(io)))
2085 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2086 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2087 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2088 (fp = IoOFP(io)))
2089 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2090 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2091 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2092 (fp = IoOFP(io)))
2093 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2094 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2095 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2096 SVt_PV)))) {
a05d7ebb
JH
2097 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2098 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2099 if (in) {
2100 if (out)
76f68e9b 2101 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2102 else
76f68e9b 2103 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2104 }
2105 else if (out)
76f68e9b 2106 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2107 SvSETMAGIC(sv);
2108 }
b310b053
JH
2109 }
2110 }
e27b5b51 2111#endif
b310b053 2112
c7030b81
NC
2113 {
2114 const char *s;
4ffa73a3
JH
2115 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2116 if (strEQ(s, "unsafe"))
2117 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2118 else if (strEQ(s, "safe"))
2119 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2120 else
2121 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2122 }
c7030b81 2123 }
4ffa73a3 2124
81d86705 2125#ifdef PERL_MAD
c7030b81
NC
2126 {
2127 const char *s;
81d86705
NC
2128 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2129 PL_madskills = 1;
2130 PL_minus_c = 1;
2131 if (!s || !s[0])
2132 PL_xmlfp = PerlIO_stdout();
2133 else {
2134 PL_xmlfp = PerlIO_open(s, "w");
2135 if (!PL_xmlfp)
2136 Perl_croak(aTHX_ "Can't open %s", s);
2137 }
1a9a51d4 2138 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2139 }
c7030b81
NC
2140 }
2141
2142 {
2143 const char *s;
81d86705
NC
2144 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2145 PL_madskills = atoi(s);
1a9a51d4 2146 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2147 }
c7030b81 2148 }
81d86705
NC
2149#endif
2150
5486870f 2151 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2152 PL_subname = newSVpvs("main");
6224f72b 2153
5486870f
DM
2154 if (add_read_e_script)
2155 filter_add(read_e_script, NULL);
2156
6224f72b
GS
2157 /* now parse the script */
2158
93189314 2159 SETERRNO(0,SS_NORMAL);
13765c85 2160 if (yyparse() || PL_parser->error_count) {
3280af22 2161 if (PL_minus_c)
cea2e8a9 2162 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2163 else {
cea2e8a9 2164 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2165 PL_origfilename);
6224f72b
GS
2166 }
2167 }
57843af0 2168 CopLINE_set(PL_curcop, 0);
3280af22 2169 PL_curstash = PL_defstash;
3280af22
NIS
2170 if (PL_e_script) {
2171 SvREFCNT_dec(PL_e_script);
a0714e2c 2172 PL_e_script = NULL;
6224f72b
GS
2173 }
2174
3280af22 2175 if (PL_do_undump)
6224f72b
GS
2176 my_unexec();
2177
57843af0
GS
2178 if (isWARN_ONCE) {
2179 SAVECOPFILE(PL_curcop);
2180 SAVECOPLINE(PL_curcop);
3280af22 2181 gv_check(PL_defstash);
57843af0 2182 }
6224f72b
GS
2183
2184 LEAVE;
2185 FREETMPS;
2186
2187#ifdef MYMALLOC
f6a607bc
RGS
2188 {
2189 const char *s;
6224f72b
GS
2190 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2191 dump_mstats("after compilation:");
f6a607bc 2192 }
6224f72b
GS
2193#endif
2194
2195 ENTER;
3280af22 2196 PL_restartop = 0;
312caa8e 2197 return NULL;
6224f72b
GS
2198}
2199
954c1994
GS
2200/*
2201=for apidoc perl_run
2202
2203Tells a Perl interpreter to run. See L<perlembed>.
2204
2205=cut
2206*/
2207
6224f72b 2208int
0cb96387 2209perl_run(pTHXx)
6224f72b 2210{
97aff369 2211 dVAR;
6224f72b 2212 I32 oldscope;
14dd3ad8 2213 int ret = 0;
db36c5a1 2214 dJMPENV;
6224f72b 2215
7918f24d
NC
2216 PERL_ARGS_ASSERT_PERL_RUN;
2217#ifndef MULTIPLICITY
ed6c66dd 2218 PERL_UNUSED_ARG(my_perl);
7918f24d 2219#endif
9d4ba2ae 2220
3280af22 2221 oldscope = PL_scopestack_ix;
96e176bf
CL
2222#ifdef VMS
2223 VMSISH_HUSHED = 0;
2224#endif
6224f72b 2225
14dd3ad8 2226 JMPENV_PUSH(ret);
6224f72b
GS
2227 switch (ret) {
2228 case 1:
2229 cxstack_ix = -1; /* start context stack again */
312caa8e 2230 goto redo_body;
14dd3ad8 2231 case 0: /* normal completion */
14dd3ad8
GS
2232 redo_body:
2233 run_body(oldscope);
14dd3ad8
GS
2234 /* FALL THROUGH */
2235 case 2: /* my_exit() */
3280af22 2236 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2237 LEAVE;
2238 FREETMPS;
3280af22 2239 PL_curstash = PL_defstash;
3a1ee7e8 2240 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2241 PL_endav && !PL_minus_c)
2242 call_list(oldscope, PL_endav);
6224f72b
GS
2243#ifdef MYMALLOC
2244 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2245 dump_mstats("after execution: ");
2246#endif
37038d91 2247 ret = STATUS_EXIT;
14dd3ad8 2248 break;
6224f72b 2249 case 3:
312caa8e
CS
2250 if (PL_restartop) {
2251 POPSTACK_TO(PL_mainstack);
2252 goto redo_body;
6224f72b 2253 }
bf49b057 2254 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2255 FREETMPS;
14dd3ad8
GS
2256 ret = 1;
2257 break;
6224f72b
GS
2258 }
2259
14dd3ad8
GS
2260 JMPENV_POP;
2261 return ret;
312caa8e
CS
2262}
2263
dd374669 2264STATIC void
14dd3ad8
GS
2265S_run_body(pTHX_ I32 oldscope)
2266{
97aff369 2267 dVAR;
6224f72b 2268 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2269 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2270
3280af22 2271 if (!PL_restartop) {
81d86705
NC
2272#ifdef PERL_MAD
2273 if (PL_xmlfp) {
2274 xmldump_all();
2275 exit(0); /* less likely to core dump than my_exit(0) */
2276 }
2277#endif
cf2782cd 2278#ifdef DEBUGGING
f0e3f042
CS
2279 if (DEBUG_x_TEST || DEBUG_B_TEST)
2280 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2281 if (!DEBUG_q_TEST)
2282 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2283#endif
6224f72b 2284
3280af22 2285 if (PL_minus_c) {
bf49b057 2286 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2287 my_exit(0);
2288 }
3280af22 2289 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2290 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2291 if (PL_initav)
2292 call_list(oldscope, PL_initav);
f1fac472
NC
2293#ifdef PERL_DEBUG_READONLY_OPS
2294 Perl_pending_Slabs_to_ro(aTHX);
2295#endif
6224f72b
GS
2296 }
2297
2298 /* do it */
2299
3280af22 2300 if (PL_restartop) {
533c011a 2301 PL_op = PL_restartop;
3280af22 2302 PL_restartop = 0;
cea2e8a9 2303 CALLRUNOPS(aTHX);
6224f72b 2304 }
3280af22
NIS
2305 else if (PL_main_start) {
2306 CvDEPTH(PL_main_cv) = 1;
533c011a 2307 PL_op = PL_main_start;
cea2e8a9 2308 CALLRUNOPS(aTHX);
6224f72b 2309 }
f6b3007c
JH
2310 my_exit(0);
2311 /* NOTREACHED */
6224f72b
GS
2312}
2313
954c1994 2314/*
ccfc67b7
JH
2315=head1 SV Manipulation Functions
2316
954c1994
GS
2317=for apidoc p||get_sv
2318
64ace3f8
NC
2319Returns the SV of the specified Perl scalar. C<flags> are passed to
2320C<gv_fetchpv>. If C<GV_ADD> is set and the
2321Perl variable does not exist then it will be created. If C<flags> is zero
2322and the variable does not exist then NULL is returned.
954c1994
GS
2323
2324=cut
2325*/
2326
6224f72b 2327SV*
64ace3f8 2328Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2329{
2330 GV *gv;
7918f24d
NC
2331
2332 PERL_ARGS_ASSERT_GET_SV;
2333
64ace3f8 2334 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2335 if (gv)
2336 return GvSV(gv);
a0714e2c 2337 return NULL;
6224f72b
GS
2338}
2339
954c1994 2340/*
ccfc67b7
JH
2341=head1 Array Manipulation Functions
2342
954c1994
GS
2343=for apidoc p||get_av
2344
cbfd0a87
NC
2345Returns the AV of the specified Perl array. C<flags> are passed to
2346C<gv_fetchpv>. If C<GV_ADD> is set and the
2347Perl variable does not exist then it will be created. If C<flags> is zero
2348and the variable does not exist then NULL is returned.
954c1994
GS
2349
2350=cut
2351*/
2352
6224f72b 2353AV*
cbfd0a87 2354Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2355{
cbfd0a87 2356 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2357
2358 PERL_ARGS_ASSERT_GET_AV;
2359
cbfd0a87 2360 if (flags)
6224f72b
GS
2361 return GvAVn(gv);
2362 if (gv)
2363 return GvAV(gv);
7d49f689 2364 return NULL;
6224f72b
GS
2365}
2366
954c1994 2367/*
ccfc67b7
JH
2368=head1 Hash Manipulation Functions
2369
954c1994
GS
2370=for apidoc p||get_hv
2371
6673a63c
NC
2372Returns the HV of the specified Perl hash. C<flags> are passed to
2373C<gv_fetchpv>. If C<GV_ADD> is set and the
2374Perl variable does not exist then it will be created. If C<flags> is zero
2375and the variable does not exist then NULL is returned.
954c1994
GS
2376
2377=cut
2378*/
2379
6224f72b 2380HV*
6673a63c 2381Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2382{
6673a63c 2383 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2384
2385 PERL_ARGS_ASSERT_GET_HV;
2386
6673a63c 2387 if (flags)
a0d0e21e
LW
2388 return GvHVn(gv);
2389 if (gv)
2390 return GvHV(gv);
5c284bb0 2391 return NULL;
a0d0e21e
LW
2392}
2393
954c1994 2394/*
ccfc67b7
JH
2395=head1 CV Manipulation Functions
2396
780a5241
NC
2397=for apidoc p||get_cvn_flags
2398
2399Returns the CV of the specified Perl subroutine. C<flags> are passed to
2400C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2401exist then it will be declared (which has the same effect as saying
2402C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2403then NULL is returned.
2404
954c1994
GS
2405=for apidoc p||get_cv
2406
780a5241 2407Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2408
2409=cut
2410*/
2411
a0d0e21e 2412CV*
780a5241 2413Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2414{
780a5241 2415 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2416 /* XXX this is probably not what they think they're getting.
2417 * It has the same effect as "sub name;", i.e. just a forward
2418 * declaration! */
7918f24d
NC
2419
2420 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2421
780a5241 2422 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2423 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2424 return newSUB(start_subparse(FALSE, 0),
780a5241 2425 newSVOP(OP_CONST, 0, sv),
5f66b61c 2426 NULL, NULL);
780a5241 2427 }
a0d0e21e 2428 if (gv)
8ebc5c01 2429 return GvCVu(gv);
601f1833 2430 return NULL;
a0d0e21e
LW
2431}
2432
2c67934f
NC
2433/* Nothing in core calls this now, but we can't replace it with a macro and
2434 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2435CV*
2436Perl_get_cv(pTHX_ const char *name, I32 flags)
2437{
7918f24d
NC
2438 PERL_ARGS_ASSERT_GET_CV;
2439
780a5241
NC
2440 return get_cvn_flags(name, strlen(name), flags);
2441}
2442
79072805
LW
2443/* Be sure to refetch the stack pointer after calling these routines. */
2444
954c1994 2445/*
ccfc67b7
JH
2446
2447=head1 Callback Functions
2448
954c1994
GS
2449=for apidoc p||call_argv
2450
2451Performs a callback to the specified Perl sub. See L<perlcall>.
2452
2453=cut
2454*/
2455
a0d0e21e 2456I32
8f42b153 2457Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2458
8ac85365
NIS
2459 /* See G_* flags in cop.h */
2460 /* null terminated arg list */
8990e307 2461{
97aff369 2462 dVAR;
a0d0e21e 2463 dSP;
8990e307 2464
7918f24d
NC
2465 PERL_ARGS_ASSERT_CALL_ARGV;
2466
924508f0 2467 PUSHMARK(SP);
a0d0e21e 2468 if (argv) {
8990e307 2469 while (*argv) {
6e449a3a 2470 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2471 argv++;
2472 }
a0d0e21e 2473 PUTBACK;
8990e307 2474 }
864dbfa3 2475 return call_pv(sub_name, flags);
8990e307
LW
2476}
2477
954c1994
GS
2478/*
2479=for apidoc p||call_pv
2480
2481Performs a callback to the specified Perl sub. See L<perlcall>.
2482
2483=cut
2484*/
2485
a0d0e21e 2486I32
864dbfa3 2487Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2488 /* name of the subroutine */
2489 /* See G_* flags in cop.h */
a0d0e21e 2490{
7918f24d
NC
2491 PERL_ARGS_ASSERT_CALL_PV;
2492
0da0e728 2493 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2494}
2495
954c1994
GS
2496/*
2497=for apidoc p||call_method
2498
2499Performs a callback to the specified Perl method. The blessed object must
2500be on the stack. See L<perlcall>.
2501
2502=cut
2503*/
2504
a0d0e21e 2505I32
864dbfa3 2506Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2507 /* name of the subroutine */
2508 /* See G_* flags in cop.h */
a0d0e21e 2509{
46ca9bac 2510 STRLEN len;
7918f24d
NC
2511 PERL_ARGS_ASSERT_CALL_METHOD;
2512
46ca9bac 2513 len = strlen(methname);
2514
2515 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2516 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2517}
2518
2519/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2520/*
2521=for apidoc p||call_sv
2522
2523Performs a callback to the Perl sub whose name is in the SV. See
2524L<perlcall>.
2525
2526=cut
2527*/
2528
a0d0e21e 2529I32
001d637e 2530Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2531 /* See G_* flags in cop.h */
a0d0e21e 2532{
27da23d5 2533 dVAR; dSP;
a0d0e21e 2534 LOGOP myop; /* fake syntax tree node */
968b3946 2535 UNOP method_op;
aa689395 2536 I32 oldmark;
8ea43dc8 2537 VOL I32 retval = 0;
a0d0e21e 2538 I32 oldscope;
54310121 2539 bool oldcatch = CATCH_GET;
6224f72b 2540 int ret;
c4420975 2541 OP* const oldop = PL_op;
db36c5a1 2542 dJMPENV;
1e422769 2543
7918f24d
NC
2544 PERL_ARGS_ASSERT_CALL_SV;
2545
a0d0e21e
LW
2546 if (flags & G_DISCARD) {
2547 ENTER;
2548 SAVETMPS;
2549 }
2f8edad0
NC
2550 if (!(flags & G_WANT)) {
2551 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2552 */
2553 flags |= G_SCALAR;
2554 }
a0d0e21e 2555
aa689395 2556 Zero(&myop, 1, LOGOP);
5f66b61c 2557 myop.op_next = NULL;
f51d4af5 2558 if (!(flags & G_NOARGS))
aa689395 2559 myop.op_flags |= OPf_STACKED;
4f911530 2560 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2561 SAVEOP();
533c011a 2562 PL_op = (OP*)&myop;
aa689395 2563
3280af22
NIS
2564 EXTEND(PL_stack_sp, 1);
2565 *++PL_stack_sp = sv;
aa689395 2566 oldmark = TOPMARK;
3280af22 2567 oldscope = PL_scopestack_ix;
a0d0e21e 2568
3280af22 2569 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2570 /* Handle first BEGIN of -d. */
3280af22 2571 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2572 /* Try harder, since this may have been a sighandler, thus
2573 * curstash may be meaningless. */
ea726b52 2574 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2575 && !(flags & G_NODEBUG))
533c011a 2576 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2577
968b3946
GS
2578 if (flags & G_METHOD) {
2579 Zero(&method_op, 1, UNOP);
2580 method_op.op_next = PL_op;
2581 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2582 method_op.op_type = OP_METHOD;
968b3946 2583 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2584 myop.op_type = OP_ENTERSUB;
f39d0b86 2585 PL_op = (OP*)&method_op;
968b3946
GS
2586 }
2587
312caa8e 2588 if (!(flags & G_EVAL)) {
0cdb2077 2589 CATCH_SET(TRUE);
d6f07c05 2590 CALL_BODY_SUB((OP*)&myop);
312caa8e 2591 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2592 CATCH_SET(oldcatch);
312caa8e
CS
2593 }
2594 else {
d78bda3d 2595 myop.op_other = (OP*)&myop;
3280af22 2596 PL_markstack_ptr--;
edb2152a 2597 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2598 PL_markstack_ptr++;
a0d0e21e 2599
14dd3ad8 2600 JMPENV_PUSH(ret);
edb2152a 2601
6224f72b
GS
2602 switch (ret) {
2603 case 0:
14dd3ad8 2604 redo_body:
d6f07c05 2605 CALL_BODY_SUB((OP*)&myop);
312caa8e 2606 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2607 if (!(flags & G_KEEPERR)) {
ab69dbc2 2608 CLEAR_ERRSV();
8433848b 2609 }
a0d0e21e 2610 break;
6224f72b 2611 case 1:
f86702cc 2612 STATUS_ALL_FAILURE;
a0d0e21e 2613 /* FALL THROUGH */
6224f72b 2614 case 2:
a0d0e21e 2615 /* my_exit() was called */
3280af22 2616 PL_curstash = PL_defstash;
a0d0e21e 2617 FREETMPS;
14dd3ad8 2618 JMPENV_POP;
f86702cc 2619 my_exit_jump();
a0d0e21e 2620 /* NOTREACHED */
6224f72b 2621 case 3:
3280af22 2622 if (PL_restartop) {
533c011a 2623 PL_op = PL_restartop;
3280af22 2624 PL_restartop = 0;
312caa8e 2625 goto redo_body;
a0d0e21e 2626 }
3280af22 2627 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2628 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2629 retval = 0;
2630 else {
2631 retval = 1;
3280af22 2632 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2633 }
312caa8e 2634 break;
a0d0e21e 2635 }
a0d0e21e 2636
edb2152a
NC
2637 if (PL_scopestack_ix > oldscope)
2638 delete_eval_scope();
14dd3ad8 2639 JMPENV_POP;
a0d0e21e 2640 }
1e422769 2641
a0d0e21e 2642 if (flags & G_DISCARD) {
3280af22 2643 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2644 retval = 0;
2645 FREETMPS;
2646 LEAVE;
2647 }
533c011a 2648 PL_op = oldop;
a0d0e21e
LW
2649 return retval;
2650}
2651
6e72f9df 2652/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2653
954c1994
GS
2654/*
2655=for apidoc p||eval_sv
2656
2657Tells Perl to C<eval> the string in the SV.
2658
2659=cut
2660*/
2661
a0d0e21e 2662I32
864dbfa3 2663Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2664
8ac85365 2665 /* See G_* flags in cop.h */
a0d0e21e 2666{
97aff369 2667 dVAR;
924508f0 2668 dSP;
a0d0e21e 2669 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2670 VOL I32 oldmark = SP - PL_stack_base;
2671 VOL I32 retval = 0;
6224f72b 2672 int ret;
c4420975 2673 OP* const oldop = PL_op;
db36c5a1 2674 dJMPENV;
84902520 2675
7918f24d
NC
2676 PERL_ARGS_ASSERT_EVAL_SV;
2677
4633a7c4
LW
2678 if (flags & G_DISCARD) {
2679 ENTER;
2680 SAVETMPS;
2681 }
2682
462e5cf6 2683 SAVEOP();
533c011a
NIS
2684 PL_op = (OP*)&myop;
2685 Zero(PL_op, 1, UNOP);
3280af22
NIS
2686 EXTEND(PL_stack_sp, 1);
2687 *++PL_stack_sp = sv;
79072805 2688
4633a7c4
LW
2689 if (!(flags & G_NOARGS))
2690 myop.op_flags = OPf_STACKED;
5f66b61c 2691 myop.op_next = NULL;
6e72f9df 2692 myop.op_type = OP_ENTEREVAL;
4f911530 2693 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2694 if (flags & G_KEEPERR)
2695 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2696
dedbcade
DM
2697 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2698 * before a PUSHEVAL, which corrupts the stack after a croak */
2699 TAINT_PROPER("eval_sv()");
2700
14dd3ad8 2701 JMPENV_PUSH(ret);
6224f72b
GS
2702 switch (ret) {
2703 case 0:
14dd3ad8 2704 redo_body:
d6f07c05 2705 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2706 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2707 if (!(flags & G_KEEPERR)) {
ab69dbc2 2708 CLEAR_ERRSV();
8433848b 2709 }
4633a7c4 2710 break;
6224f72b 2711 case 1:
f86702cc 2712 STATUS_ALL_FAILURE;
4633a7c4 2713 /* FALL THROUGH */
6224f72b 2714 case 2:
4633a7c4 2715 /* my_exit() was called */
3280af22 2716 PL_curstash = PL_defstash;
4633a7c4 2717 FREETMPS;
14dd3ad8 2718 JMPENV_POP;
f86702cc 2719 my_exit_jump();
4633a7c4 2720 /* NOTREACHED */
6224f72b 2721 case 3:
3280af22 2722 if (PL_restartop) {
533c011a 2723 PL_op = PL_restartop;
3280af22 2724 PL_restartop = 0;
312caa8e 2725 goto redo_body;
4633a7c4 2726 }
3280af22 2727 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2728 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2729 retval = 0;
2730 else {
2731 retval = 1;
3280af22 2732 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2733 }
312caa8e 2734 break;
4633a7c4
LW
2735 }
2736
14dd3ad8 2737 JMPENV_POP;
4633a7c4 2738 if (flags & G_DISCARD) {
3280af22 2739 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2740 retval = 0;
2741 FREETMPS;
2742 LEAVE;
2743 }
533c011a 2744 PL_op = oldop;
4633a7c4
LW
2745 return retval;
2746}
2747
954c1994
GS
2748/*
2749=for apidoc p||eval_pv
2750
2751Tells Perl to C<eval> the given string and return an SV* result.
2752
2753=cut
2754*/
2755
137443ea 2756SV*
864dbfa3 2757Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2758{
97aff369 2759 dVAR;
137443ea
PP
2760 dSP;
2761 SV* sv = newSVpv(p, 0);
2762
7918f24d
NC
2763 PERL_ARGS_ASSERT_EVAL_PV;
2764
864dbfa3 2765 eval_sv(sv, G_SCALAR);
137443ea
PP
2766 SvREFCNT_dec(sv);
2767
2768 SPAGAIN;
2769 sv = POPs;
2770 PUTBACK;
2771
2d8e6c8d 2772 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2773 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2774 }
137443ea
PP
2775
2776 return sv;
2777}
2778
4633a7c4
LW
2779/* Require a module. */
2780
954c1994 2781/*
ccfc67b7
JH
2782=head1 Embedding Functions
2783
954c1994
GS
2784=for apidoc p||require_pv
2785
7d3fb230
BS
2786Tells Perl to C<require> the file named by the string argument. It is
2787analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2788implemented that way; consider using load_module instead.
954c1994 2789
7d3fb230 2790=cut */
954c1994 2791
4633a7c4 2792void
864dbfa3 2793Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2794{
97aff369 2795 dVAR;
d3acc0f7 2796 dSP;
97aff369 2797 SV* sv;
7918f24d
NC
2798
2799 PERL_ARGS_ASSERT_REQUIRE_PV;
2800
e788e7d3 2801 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2802 PUTBACK;
be41e5d9
NC
2803 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2804 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2805 SPAGAIN;
2806 POPSTACK;
79072805
LW
2807}
2808
76e3520e 2809STATIC void
e1ec3a88 2810S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2811{
ab821d7f 2812 /* This message really ought to be max 23 lines.
75c72d73 2813 * Removed -h because the user already knows that option. Others? */
fb73857a 2814
1566c39d
NC
2815 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2816 minimum of 509 character string literals. */
27da23d5 2817 static const char * const usage_msg[] = {
1566c39d
NC
2818" -0[octal] specify record separator (\\0, if no argument)\n"
2819" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2820" -C[number/list] enables the listed Unicode features\n"
2821" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2822" -d[:debugger] run program under debugger\n"
2823" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2824" -e program one line of program (several -e's allowed, omit programfile)\n"
2825" -E program like -e, but enables all optional features\n"
2826" -f don't do $sitelib/sitecustomize.pl at startup\n"
2827" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2828" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2829" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2830" -l[octal] enable line ending processing, specifies line terminator\n"
2831" -[mM][-]module execute \"use/no module...\" before executing program\n"
2832" -n assume \"while (<>) { ... }\" loop around program\n"
2833" -p assume loop like -n but print line also, like sed\n"
2834" -s enable rudimentary parsing for switches after programfile\n"
2835" -S look for programfile using PATH environment variable\n",
2836" -t enable tainting warnings\n"
2837" -T enable tainting checks\n"
2838" -u dump core after parsing program\n"
2839" -U allow unsafe operations\n"
2840" -v print version, patchlevel and license\n"
2841" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2842" -w enable many useful warnings (RECOMMENDED)\n"
2843" -W enable all warnings\n"
2844" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2845" -X disable all warnings\n"
2846" \n"
2847"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2848NULL
2849};
27da23d5 2850 const char * const *p = usage_msg;
1566c39d 2851 PerlIO *out = PerlIO_stdout();
fb73857a 2852
7918f24d
NC
2853 PERL_ARGS_ASSERT_USAGE;
2854
1566c39d
NC
2855 PerlIO_printf(out,
2856 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2857 name);
fb73857a 2858 while (*p)
1566c39d 2859 PerlIO_puts(out, *p++);
4633a7c4
LW
2860}
2861
b4ab917c
DM
2862/* convert a string of -D options (or digits) into an int.
2863 * sets *s to point to the char after the options */
2864
2865#ifdef DEBUGGING
2866int
e1ec3a88 2867Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2868{
27da23d5 2869 static const char * const usage_msgd[] = {
651b8f1a
NC
2870 " Debugging flag values: (see also -d)\n"
2871 " p Tokenizing and parsing (with v, displays parse stack)\n"
2872 " s Stack snapshots (with v, displays all stacks)\n"
2873 " l Context (loop) stack processing\n"
2874 " t Trace execution\n"
2875 " o Method and overloading resolution\n",
2876 " c String/numeric conversions\n"
2877 " P Print profiling info, source file input state\n"
2878 " m Memory and SV allocation\n"
2879 " f Format processing\n"
2880 " r Regular expression parsing and execution\n"
2881 " x Syntax tree dump\n",
2882 " u Tainting checks\n"
2883 " H Hash dump -- usurps values()\n"
2884 " X Scratchpad allocation\n"
2885 " D Cleaning up\n"
2886 " T Tokenising\n"
2887 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2888 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2889 " v Verbose: use in conjunction with other flags\n"
2890 " C Copy On Write\n"
2891 " A Consistency checks on internal structures\n"
2892 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2893 " M trace smart match resolution\n"
2894 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2895 NULL
2896 };
b4ab917c 2897 int i = 0;
7918f24d
NC
2898
2899 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2900
b4ab917c
DM
2901 if (isALPHA(**s)) {
2902 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2903 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2904
2905 for (; isALNUM(**s); (*s)++) {
c4420975 2906 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2907 if (d)
2908 i |= 1 << (d - debopts);
2909 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2910 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2911 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2912 }
2913 }
e6e64d9b 2914 else if (isDIGIT(**s)) {
b4ab917c
DM
2915 i = atoi(*s);
2916 for (; isALNUM(**s); (*s)++) ;
2917 }
ddcf8bc1 2918 else if (givehelp) {
06e869a4 2919 const char *const *p = usage_msgd;
651b8f1a 2920 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 2921 }
b4ab917c
DM
2922# ifdef EBCDIC
2923 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2924 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2925 "-Dp not implemented on this platform\n");
2926# endif
2927 return i;
2928}
2929#endif
2930
79072805
LW
2931/* This routine handles any switches that can be given during run */
2932
c7030b81
NC
2933const char *
2934Perl_moreswitches(pTHX_ const char *s)
79072805 2935{
27da23d5 2936 dVAR;
84c133a0 2937 UV rschar;
0544e6df 2938 const char option = *s; /* used to remember option in -m/-M code */
79072805 2939
7918f24d
NC
2940 PERL_ARGS_ASSERT_MORESWITCHES;
2941
79072805
LW
2942 switch (*s) {
2943 case '0':
a863c7d1 2944 {
f2095865 2945 I32 flags = 0;
a3b680e6 2946 STRLEN numlen;
f2095865
JH
2947
2948 SvREFCNT_dec(PL_rs);
2949 if (s[1] == 'x' && s[2]) {
a3b680e6 2950 const char *e = s+=2;
f2095865
JH
2951 U8 *tmps;
2952
a3b680e6
AL
2953 while (*e)
2954 e++;
f2095865
JH
2955 numlen = e - s;
2956 flags = PERL_SCAN_SILENT_ILLDIGIT;
2957 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2958 if (s + numlen < e) {
2959 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2960 numlen = 0;
2961 s--;
2962 }
396482e1 2963 PL_rs = newSVpvs("");
c5661c80 2964 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2965 tmps = (U8*)SvPVX(PL_rs);
2966 uvchr_to_utf8(tmps, rschar);
2967 SvCUR_set(PL_rs, UNISKIP(rschar));
2968 SvUTF8_on(PL_rs);
2969 }
2970 else {
2971 numlen = 4;
2972 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2973 if (rschar & ~((U8)~0))
2974 PL_rs = &PL_sv_undef;
2975 else if (!rschar && numlen >= 2)
396482e1 2976 PL_rs = newSVpvs("");
f2095865
JH
2977 else {
2978 char ch = (char)rschar;
2979 PL_rs = newSVpvn(&ch, 1);
2980 }
2981 }
64ace3f8 2982 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 2983 return s + numlen;
a863c7d1 2984 }
46487f74 2985 case 'C':
a05d7ebb 2986 s++;
dd374669 2987 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
2988 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
2989 PL_utf8cache = -1;
46487f74 2990 return s;
2304df62 2991 case 'F':
3280af22 2992 PL_minus_F = TRUE;
ebce5377
RGS
2993 PL_splitstr = ++s;
2994 while (*s && !isSPACE(*s)) ++s;
e49e380e 2995 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 2996 return s;
79072805 2997 case 'a':
3280af22 2998 PL_minus_a = TRUE;
79072805
LW
2999 s++;
3000 return s;
3001 case 'c':
3280af22 3002 PL_minus_c = TRUE;
79072805
LW
3003 s++;
3004 return s;
3005 case 'd':
f20b2998 3006 forbid_setid('d', FALSE);
4633a7c4 3007 s++;
2cbb2ee1
RGS
3008
3009 /* -dt indicates to the debugger that threads will be used */
3010 if (*s == 't' && !isALNUM(s[1])) {
3011 ++s;
3012 my_setenv("PERL5DB_THREADED", "1");
3013 }
3014
70c94a19
RR
3015 /* The following permits -d:Mod to accepts arguments following an =
3016 in the fashion that -MSome::Mod does. */
3017 if (*s == ':' || *s == '=') {
f85893a1
NC
3018 const char *start = ++s;
3019 const char *const end = s + strlen(s);
396482e1 3020 SV * const sv = newSVpvs("use Devel::");
f85893a1 3021
70c94a19
RR
3022 /* We now allow -d:Module=Foo,Bar */
3023 while(isALNUM(*s) || *s==':') ++s;
3024 if (*s != '=')
f85893a1 3025 sv_catpvn(sv, start, end - start);
70c94a19
RR
3026 else {
3027 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3028 /* Don't use NUL as q// delimiter here, this string goes in the
3029 * environment. */
3030 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3031 }
f85893a1 3032 s = end;
184f32ec 3033 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3034 SvREFCNT_dec(sv);
4633a7c4 3035 }
ed094faf 3036 if (!PL_perldb) {
3280af22 3037 PL_perldb = PERLDB_ALL;
a0d0e21e 3038 init_debugger();
ed094faf 3039 }
79072805
LW
3040 return s;
3041 case 'D':
0453d815 3042 {
79072805 3043#ifdef DEBUGGING
f20b2998 3044 forbid_setid('D', FALSE);
b4ab917c 3045 s++;
dd374669 3046 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3047#else /* !DEBUGGING */
0453d815 3048 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3049 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3050 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3051 for (s++; isALNUM(*s); s++) ;
79072805 3052#endif
79072805 3053 return s;
0453d815 3054 }
4633a7c4 3055 case 'h':
ac27b0f5 3056 usage(PL_origargv[0]);
7ca617d0 3057 my_exit(0);
79072805 3058 case 'i':
43c5f42d 3059 Safefree(PL_inplace);
c030f24b
GH
3060#if defined(__CYGWIN__) /* do backup extension automagically */
3061 if (*(s+1) == '\0') {
c86a4f2e 3062 PL_inplace = savepvs(".bak");
c030f24b
GH
3063 return s+1;
3064 }
3065#endif /* __CYGWIN__ */
5ef5d758 3066 {
d4c19fe8 3067 const char * const start = ++s;
5ef5d758
NC
3068 while (*s && !isSPACE(*s))
3069 ++s;
3070
3071 PL_inplace = savepvn(start, s - start);
3072 }
7b8d334a 3073 if (*s) {
5ef5d758 3074 ++s;
7b8d334a 3075 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3076 s++;
7b8d334a 3077 }
fb73857a 3078 return s;
4e49a025 3079 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3080 forbid_setid('I', FALSE);
fb73857a
PP
3081 ++s;
3082 while (*s && isSPACE(*s))
3083 ++s;
3084 if (*s) {
c7030b81 3085 const char *e, *p;
0df16ed7
GS
3086 p = s;
3087 /* ignore trailing spaces (possibly followed by other switches) */
3088 do {
3089 for (e = p; *e && !isSPACE(*e); e++) ;
3090 p = e;
3091 while (isSPACE(*p))
3092 p++;
3093 } while (*p && *p != '-');
55b4bc1c 3094 incpush(s, e-s,
e28f3139 3095 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3096 s = p;
3097 if (*s == '-')
3098 s++;
79072805
LW
3099 }
3100 else
a67e862a 3101 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3102 return s;
79072805 3103 case 'l':
3280af22 3104 PL_minus_l = TRUE;
79072805 3105 s++;
7889fe52
NIS
3106 if (PL_ors_sv) {
3107 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3108 PL_ors_sv = NULL;
7889fe52 3109 }
79072805 3110 if (isDIGIT(*s)) {
53305cf1 3111 I32 flags = 0;
a3b680e6 3112 STRLEN numlen;
396482e1 3113 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3114 numlen = 3 + (*s == '0');
3115 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3116 s += numlen;
3117 }
3118 else {
8bfdd7d9 3119 if (RsPARA(PL_rs)) {
396482e1 3120 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3121 }
3122 else {
8bfdd7d9 3123 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3124 }
79072805
LW
3125 }
3126 return s;
1a30305b 3127 case 'M':
f20b2998 3128 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3129 /* FALL THROUGH */
3130 case 'm':
f20b2998 3131 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3132 if (*++s) {
c7030b81 3133 const char *start;
b64cb68c 3134 const char *end;
11343788 3135 SV *sv;
e1ec3a88 3136 const char *use = "use ";
0544e6df 3137 bool colon = FALSE;
a5f75d66 3138 /* -M-foo == 'no foo' */
d0043bd1
NC
3139 /* Leading space on " no " is deliberate, to make both
3140 possibilities the same length. */
3141 if (*s == '-') { use = " no "; ++s; }
3142 sv = newSVpvn(use,4);
a5f75d66 3143 start = s;
1a30305b 3144 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3145 while(isALNUM(*s) || *s==':') {
3146 if( *s++ == ':' ) {
3147 if( *s == ':' )
3148 s++;
3149 else
3150 colon = TRUE;
3151 }
3152 }
3153 if (s == start)
3154 Perl_croak(aTHX_ "Module name required with -%c option",
3155 option);
3156 if (colon)
3157 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3158 "contains single ':'",
63da6837 3159 (int)(s - start), start, option);
b64cb68c 3160 end = s + strlen(s);
c07a80fd 3161 if (*s != '=') {
b64cb68c 3162 sv_catpvn(sv, start, end - start);
0544e6df 3163 if (option == 'm') {
c07a80fd 3164 if (*s != '\0')
cea2e8a9 3165 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3166 sv_catpvs( sv, " ()");
c07a80fd
PP
3167 }
3168 } else {
11343788 3169 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3170 /* Use NUL as q''-delimiter. */
3171 sv_catpvs(sv, " split(/,/,q\0");
3172 ++s;
3173 sv_catpvn(sv, s, end - s);
396482e1 3174 sv_catpvs(sv, "\0)");
c07a80fd 3175 }
b64cb68c 3176 s = end;
29a861e7 3177 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3178 }
3179 else
0544e6df 3180 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3181 return s;
79072805 3182 case 'n':
3280af22 3183 PL_minus_n = TRUE;
79072805
LW
3184 s++;
3185 return s;
3186 case 'p':
3280af22 3187 PL_minus_p = TRUE;
79072805
LW
3188 s++;
3189 return s;
3190 case 's':
f20b2998 3191 forbid_setid('s', FALSE);
3280af22 3192 PL_doswitches = TRUE;
79072805
LW
3193 s++;
3194 return s;
6537fe72
MS
3195 case 't':
3196 if (!PL_tainting)
22f7c9c9 3197 TOO_LATE_FOR('t');
6537fe72
MS
3198 s++;
3199 return s;
463ee0b2 3200 case 'T':
3280af22 3201 if (!PL_tainting)
22f7c9c9 3202 TOO_LATE_FOR('T');
463ee0b2
LW
3203 s++;
3204 return s;
79072805 3205 case 'u':
3280af22 3206 PL_do_undump = TRUE;
79072805
LW
3207 s++;
3208 return s;
3209 case 'U':
3280af22 3210 PL_unsafe = TRUE;
79072805
LW
3211 s++;
3212 return s;
3213 case 'v':
d7aa5382 3214 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3215 upg_version(PL_patchlevel, TRUE);
8e9464f1 3216#if !defined(DGUX)
46807d8e
YO
3217 {
3218 SV* level= vstringify(PL_patchlevel);
3219#ifdef PERL_PATCHNUM
23d483e2
NC
3220# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3221 SV *num = newSVpvs(PERL_PATCHNUM "*");
3222# else
3223 SV *num = newSVpvs(PERL_PATCHNUM);
3224# endif
46807d8e
YO
3225
3226 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3227 SvREFCNT_dec(level);
3228 level= num;
3229 } else {
d0a9311f 3230 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3231 SvREFCNT_dec(num);
3232 }
3233 #endif
3234 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3235 "\nThis is perl " STRINGIFY(PERL_REVISION)
3236 ", version " STRINGIFY(PERL_VERSION)
3237 ", subversion " STRINGIFY(PERL_SUBVERSION)
3238 " (%"SVf") built for " ARCHNAME, level
3239 );
46807d8e
YO
3240 SvREFCNT_dec(level);
3241 }
8e9464f1
JH
3242#else /* DGUX */
3243/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3244 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3245 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3246 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3247 PerlIO_printf(PerlIO_stdout(),
3248 Perl_form(aTHX_ " built under %s at %s %s\n",
3249 OSNAME, __DATE__, __TIME__));
3250 PerlIO_printf(PerlIO_stdout(),
3251 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3252 OSVERS));
8e9464f1 3253#endif /* !DGUX */
fb73857a
PP
3254#if defined(LOCAL_PATCH_COUNT)
3255 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3256 PerlIO_printf(PerlIO_stdout(),
3257 "\n(with %d registered patch%s, "
3258 "see perl -V for more detail)",
bb7a0f54 3259 LOCAL_PATCH_COUNT,
b0e47665 3260 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3261#endif
1a30305b 3262
b0e47665 3263 PerlIO_printf(PerlIO_stdout(),
32709fdf 3264 "\n\nCopyright 1987-2010, Larry Wall\n");
79072805 3265#ifdef MSDOS
b0e47665
GS
3266 PerlIO_printf(PerlIO_stdout(),
3267 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3268#endif
3269#ifdef DJGPP
b0e47665
GS
3270 PerlIO_printf(PerlIO_stdout(),
3271 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3272 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3273#endif
79072805 3274#ifdef OS2
b0e47665
GS
3275 PerlIO_printf(PerlIO_stdout(),
3276 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3277 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3278#endif
79072805 3279#ifdef atarist
b0e47665
GS
3280 PerlIO_printf(PerlIO_stdout(),
3281 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3282#endif
a3f9223b 3283#ifdef __BEOS__
b0e47665
GS
3284 PerlIO_printf(PerlIO_stdout(),
3285 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3286#endif
1d84e8df 3287#ifdef MPE
b0e47665 3288 PerlIO_printf(PerlIO_stdout(),
e583a879 3289 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3290#endif
9d116dd7 3291#ifdef OEMVS
b0e47665
GS
3292 PerlIO_printf(PerlIO_stdout(),
3293 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3294#endif
495c5fdc 3295#ifdef __VOS__
b0e47665 3296 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3297 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3298#endif
092bebab 3299#ifdef __OPEN_VM
b0e47665
GS
3300 PerlIO_printf(PerlIO_stdout(),
3301 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3302#endif
a1a0e61e 3303#ifdef POSIX_BC
b0e47665
GS
3304 PerlIO_printf(PerlIO_stdout(),
3305 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3306#endif
f83d2536 3307#ifdef EPOC
b0e47665 3308 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3309 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3310#endif
e1caacb4 3311#ifdef UNDER_CE
b475b3e6
JH
3312 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3313 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3314 wce_hitreturn();
3315#endif
a0fd4948 3316#ifdef __SYMBIAN32__
27da23d5
JH
3317 PerlIO_printf(PerlIO_stdout(),
3318 "Symbian port by Nokia, 2004-2005\n");
3319#endif
baed7233
DL
3320#ifdef BINARY_BUILD_NOTICE
3321 BINARY_BUILD_NOTICE;
3322#endif
b0e47665
GS
3323 PerlIO_printf(PerlIO_stdout(),
3324 "\n\
79072805 3325Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3326GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3327Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3328this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3329Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3330 my_exit(0);
79072805 3331 case 'w':
b2e5e6ba 3332 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3333 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3334 }
599cee73
PM
3335 s++;
3336 return s;
3337 case 'W':
ac27b0f5 3338 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3339 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3340 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3341 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3342 s++;
3343 return s;
3344 case 'X':
ac27b0f5 3345 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3346 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3347 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3348 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3349 s++;
3350 return s;
a0d0e21e 3351 case '*':
79072805 3352 case ' ':
d3133c89
NC
3353 while( *s == ' ' )
3354 ++s;
3355 if (s[0] == '-') /* Additional switches on #! line. */
3356 return s+1;
79072805 3357 break;
a0d0e21e 3358 case '-':
79072805 3359 case 0:
51882d45 3360#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3361 case '\r':
3362#endif
79072805
LW
3363 case '\n':
3364 case '\t':
3365 break;
aa689395
PP
3366#ifdef ALTERNATE_SHEBANG
3367 case 'S': /* OS/2 needs -S on "extproc" line. */
3368 break;
3369#endif
79072805 3370 default:
cea2e8a9 3371 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3372 }
bd61b366 3373 return NULL;
79072805
LW
3374}
3375
3376/* compliments of Tom Christiansen */
3377
3378/* unexec() can be found in the Gnu emacs distribution */
ee580363 3379/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3380
3381void
864dbfa3 3382Perl_my_unexec(pTHX)
79072805 3383{
b37c2d43 3384 PERL_UNUSED_CONTEXT;
79072805 3385#ifdef UNEXEC
b37c2d43
AL
3386 SV * prog = newSVpv(BIN_EXP, 0);
3387 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3388 int status = 1;
79072805
LW
3389 extern int etext;
3390
396482e1 3391 sv_catpvs(prog, "/perl");
396482e1 3392 sv_catpvs(file, ".perldump");
79072805 3393
ee580363
GS
3394 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3395 /* unexec prints msg to stderr in case of failure */
6ad3d225 3396 PerlProc_exit(status);
79072805 3397#else
a5f75d66
AD
3398# ifdef VMS
3399# include <lib$routines.h>
3400 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3401# elif defined(WIN32) || defined(__CYGWIN__)
3402 Perl_croak(aTHX_ "dump is not supported");
aa689395 3403# else
79072805 3404 ABORT(); /* for use with undump */
aa689395 3405# endif
a5f75d66 3406#endif
79072805
LW
3407}
3408
cb68f92d
GS
3409/* initialize curinterp */
3410STATIC void
cea2e8a9 3411S_init_interp(pTHX)
cb68f92d 3412{
97aff369 3413 dVAR;
acfe0abc
GS
3414#ifdef MULTIPLICITY
3415# define PERLVAR(var,type)
3416# define PERLVARA(var,n,type)
3417# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3418# define PERLVARI(var,type,init) aTHX->var = init;
3419# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3420# else
acfe0abc
GS
3421# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3422# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3423# endif
acfe0abc 3424# include "intrpvar.h"
acfe0abc
GS
3425# undef PERLVAR
3426# undef PERLVARA
3427# undef PERLVARI
3428# undef PERLVARIC
3429#else
3430# define PERLVAR(var,type)
3431# define PERLVARA(var,n,type)
3432# define PERLVARI(var,type,init) PL_##var = init;
3433# define PERLVARIC(var,type,init) PL_##var = init;
3434# include "intrpvar.h"
acfe0abc
GS
3435# undef PERLVAR
3436# undef PERLVARA
3437# undef PERLVARI
3438# undef PERLVARIC
cb68f92d
GS
3439#endif
3440
46ab3289
NC
3441 /* As these are inside a structure, PERLVARI isn't capable of initialising
3442 them */
6c3f0a89
NC
3443 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3444 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3445}
3446
76e3520e 3447STATIC void
cea2e8a9 3448S_init_main_stash(pTHX)
79072805 3449{
97aff369 3450 dVAR;
463ee0b2 3451 GV *gv;
6e72f9df 3452
3280af22 3453 PL_curstash = PL_defstash = newHV();
23579a14
NC
3454 /* We know that the string "main" will be in the global shared string
3455 table, so it's a small saving to use it rather than allocate another
3456 8 bytes. */
18916d0d 3457 PL_curstname = newSVpvs_share("main");
fafc274c 3458 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3459 /* If we hadn't caused another reference to "main" to be in the shared
3460 string table above, then it would be worth reordering these two,
3461 because otherwise all we do is delete "main" from it as a consequence
3462 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3463 SvREFCNT_dec(GvHV(gv));
23579a14 3464 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3465 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3466 SvREADONLY_on(gv);
fafc274c
NC
3467 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3468 SVt_PVAV)));
5a5094bd 3469 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3470 GvMULTI_on(PL_incgv);
fafc274c 3471 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3472 GvMULTI_on(PL_hintgv);
fafc274c 3473 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3474 SvREFCNT_inc_simple_void(PL_defgv);
fafc274c 3475 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5a5094bd 3476 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3477 GvMULTI_on(PL_errgv);
fafc274c 3478 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22 3479 GvMULTI_on(PL_replgv);
cea2e8a9 3480 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3481#ifdef PERL_DONT_CREATE_GVSV
3482 gv_SVadd(PL_errgv);
3483#endif
38a03e6e 3484 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
ab69dbc2 3485 CLEAR_ERRSV();
3280af22 3486 PL_curstash = PL_defstash;
11faa288 3487 CopSTASH_set(&PL_compiling, PL_defstash);
5c1737d1
NC
3488 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3489 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3490 SVt_PVHV));
4633a7c4 3491 /* We must init $/ before switches are processed. */
64ace3f8 3492 sv_setpvs(get_sv("/", GV_ADD), "\n");
79072805
LW
3493}
3494
fdf5d70d 3495STATIC int
2f352907 3496S_open_script(pTHX_ const char *scriptname, bool dosearch,
f20b2998 3497 bool *suidscript, PerlIO **rsfpp)
79072805 3498{