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4b88f280 1#line 2 "perl.c"
a0d0e21e
LW
2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
32709fdf
A
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 by Larry Wall
6 * and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of Eärendil
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
378cc40b 27#include "EXTERN.h"
864dbfa3 28#define PERL_IN_PERL_C
378cc40b 29#include "perl.h"
e3321bb0 30#include "patchlevel.h" /* for local_patches */
4a5df386 31#include "XSUB.h"
378cc40b 32
011f1a1a
JH
33#ifdef NETWARE
34#include "nwutil.h"
011f1a1a
JH
35#endif
36
df5cef82 37/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
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38#ifdef I_UNISTD
39#include <unistd.h>
40#endif
a0d0e21e 41
2aa47728
NC
42#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
43# ifdef I_SYS_WAIT
44# include <sys/wait.h>
45# endif
bf357333
NC
46# ifdef I_SYSUIO
47# include <sys/uio.h>
48# endif
49
50union control_un {
51 struct cmsghdr cm;
52 char control[CMSG_SPACE(sizeof(int))];
53};
54
2aa47728
NC
55#endif
56
5311654c
JH
57#ifdef __BEOS__
58# define HZ 1000000
59#endif
60
61#ifndef HZ
62# ifdef CLK_TCK
63# define HZ CLK_TCK
64# else
65# define HZ 60
66# endif
67#endif
68
7114a2d2 69#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 70char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
71#endif
72
acfe0abc 73static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 74
cc69b689 75#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 76/* Drop everything. Heck, don't even try to call it */
cc69b689
NC
77# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
78#else
ec2019ad 79/* Drop almost everything */
cc69b689 80# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 81#endif
8d063cd8 82
d6f07c05
AL
83#define CALL_BODY_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
GS
165perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
166 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
167 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
168 struct IPerlDir* ipD, struct IPerlSock* ipS,
169 struct IPerlProc* ipP)
170{
171 PerlInterpreter *my_perl;
7918f24d
NC
172
173 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
174
9f653bb5 175 /* Newx() needs interpreter, so call malloc() instead */
32e30700 176 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 177 S_init_tls_and_interp(my_perl);
32e30700
GS
178 Zero(my_perl, 1, PerlInterpreter);
179 PL_Mem = ipM;
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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
0d311fbe
NC
1689# ifdef USE_SITECUSTOMIZE
1690 " USE_SITECUSTOMIZE"
1691# endif
4a5df386
NC
1692 ;
1693 PERL_UNUSED_ARG(cv);
1694 PERL_UNUSED_ARG(items);
1695
1696 EXTEND(SP, entries);
1697
1698 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1699 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1700 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1701
1702#ifdef __DATE__
1703# ifdef __TIME__
1704 PUSHs(Perl_newSVpvn_flags(aTHX_
1705 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1706 SVs_TEMP));
1707# else
1708 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1709 SVs_TEMP));
1710# endif
1711#else
1712 PUSHs(&PL_sv_undef);
1713#endif
1714
4a5df386
NC
1715 for (i = 1; i <= local_patch_count; i++) {
1716 /* This will be an undef, if PL_localpatches[i] is NULL. */
1717 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1718 }
1719
1720 XSRETURN(entries);
1721}
1722
be71fc8f
NC
1723#define INCPUSH_UNSHIFT 0x01
1724#define INCPUSH_ADD_OLD_VERS 0x02
1725#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1726#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1727#define INCPUSH_NOT_BASEDIR 0x10
1728#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1729#define INCPUSH_ADD_SUB_DIRS \
1730 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1731
312caa8e 1732STATIC void *
14dd3ad8 1733S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1734{
27da23d5 1735 dVAR;
2f9285f8 1736 PerlIO *rsfp;
312caa8e 1737 int argc = PL_origargc;
8f42b153 1738 char **argv = PL_origargv;
e1ec3a88 1739 const char *scriptname = NULL;
312caa8e 1740 VOL bool dosearch = FALSE;
c7030b81 1741 register char c;
bd61b366 1742 const char *cddir = NULL;
ab019eaa 1743#ifdef USE_SITECUSTOMIZE
20ef40cf 1744 bool minus_f = FALSE;
ab019eaa 1745#endif
009d90df 1746 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1747 bool add_read_e_script = FALSE;
009d90df
DM
1748
1749 SvGROW(linestr_sv, 80);
76f68e9b 1750 sv_setpvs(linestr_sv,"");
312caa8e 1751
6224f72b 1752 init_main_stash();
54310121 1753
c7030b81
NC
1754 {
1755 const char *s;
6224f72b
GS
1756 for (argc--,argv++; argc > 0; argc--,argv++) {
1757 if (argv[0][0] != '-' || !argv[0][1])
1758 break;
6224f72b
GS
1759 s = argv[0]+1;
1760 reswitch:
47f56822 1761 switch ((c = *s)) {
729a02f2 1762 case 'C':
1d5472a9
GS
1763#ifndef PERL_STRICT_CR
1764 case '\r':
1765#endif
6224f72b
GS
1766 case ' ':
1767 case '0':
1768 case 'F':
1769 case 'a':
1770 case 'c':
1771 case 'd':
1772 case 'D':
1773 case 'h':
1774 case 'i':
1775 case 'l':
1776 case 'M':
1777 case 'm':
1778 case 'n':
1779 case 'p':
1780 case 's':
1781 case 'u':
1782 case 'U':
1783 case 'v':
599cee73
PM
1784 case 'W':
1785 case 'X':
6224f72b 1786 case 'w':
97bd5664 1787 if ((s = moreswitches(s)))
6224f72b
GS
1788 goto reswitch;
1789 break;
33b78306 1790
1dbad523 1791 case 't':
22f7c9c9 1792 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1793 if( !PL_tainting ) {
1794 PL_taint_warn = TRUE;
1795 PL_tainting = TRUE;
1796 }
1797 s++;
1798 goto reswitch;
6224f72b 1799 case 'T':
22f7c9c9 1800 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1801 PL_tainting = TRUE;
317ea90d 1802 PL_taint_warn = FALSE;
6224f72b
GS
1803 s++;
1804 goto reswitch;
f86702cc 1805
bc9b29db
RH
1806 case 'E':
1807 PL_minus_E = TRUE;
1808 /* FALL THROUGH */
6224f72b 1809 case 'e':
f20b2998 1810 forbid_setid('e', FALSE);
3280af22 1811 if (!PL_e_script) {
396482e1 1812 PL_e_script = newSVpvs("");
5486870f 1813 add_read_e_script = TRUE;
6224f72b
GS
1814 }
1815 if (*++s)
3280af22 1816 sv_catpv(PL_e_script, s);
6224f72b 1817 else if (argv[1]) {
3280af22 1818 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1819 argc--,argv++;
1820 }
1821 else
47f56822 1822 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1823 sv_catpvs(PL_e_script, "\n");
6224f72b 1824 break;
afe37c7d 1825
20ef40cf 1826 case 'f':
f5542d3a 1827#ifdef USE_SITECUSTOMIZE
20ef40cf 1828 minus_f = TRUE;
f5542d3a 1829#endif
20ef40cf
GA
1830 s++;
1831 goto reswitch;
1832
6224f72b 1833 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1834 forbid_setid('I', FALSE);
bd61b366 1835 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1836 argc--,argv++;
1837 }
6224f72b 1838 if (s && *s) {
0df16ed7 1839 STRLEN len = strlen(s);
55b4bc1c 1840 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1841 }
1842 else
a67e862a 1843 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1844 break;
6224f72b 1845 case 'S':
f20b2998 1846 forbid_setid('S', FALSE);
6224f72b
GS
1847 dosearch = TRUE;
1848 s++;
1849 goto reswitch;
1850 case 'V':
7edfd0ef
NC
1851 {
1852 SV *opts_prog;
1853
7edfd0ef 1854 if (*++s != ':') {
37ca4a5b 1855 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1856 }
1857 else {
1858 ++s;
1859 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1860 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1861 0, s, 0);
1862 s += strlen(s);
1863 }
37ca4a5b 1864 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1865 /* don't look for script or read stdin */
1866 scriptname = BIT_BUCKET;
1867 goto reswitch;
6224f72b 1868 }
6224f72b 1869 case 'x':
3280af22 1870 PL_doextract = TRUE;
6224f72b 1871 s++;
304334da 1872 if (*s)
f4c556ac 1873 cddir = s;
6224f72b
GS
1874 break;
1875 case 0:
1876 break;
1877 case '-':
1878 if (!*++s || isSPACE(*s)) {
1879 argc--,argv++;
1880 goto switch_end;
1881 }
1882 /* catch use of gnu style long options */
1883 if (strEQ(s, "version")) {
dd374669 1884 s = (char *)"v";
6224f72b
GS
1885 goto reswitch;
1886 }
1887 if (strEQ(s, "help")) {
dd374669 1888 s = (char *)"h";
6224f72b
GS
1889 goto reswitch;
1890 }
1891 s--;
1892 /* FALL THROUGH */
1893 default:
cea2e8a9 1894 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1895 }
1896 }
c7030b81
NC
1897 }
1898
6224f72b 1899 switch_end:
54310121 1900
c7030b81
NC
1901 {
1902 char *s;
1903
f675dbe5
CB
1904 if (
1905#ifndef SECURE_INTERNAL_GETENV
1906 !PL_tainting &&
1907#endif
cf756827 1908 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1909 {
74288ac8
GS
1910 while (isSPACE(*s))
1911 s++;
317ea90d 1912 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1913 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1914 PL_tainting = TRUE;
317ea90d
MS
1915 PL_taint_warn = FALSE;
1916 }
74288ac8 1917 else {
bd61b366 1918 char *popt_copy = NULL;
74288ac8 1919 while (s && *s) {
54913509 1920 const char *d;
74288ac8
GS
1921 while (isSPACE(*s))
1922 s++;
1923 if (*s == '-') {
1924 s++;
1925 if (isSPACE(*s))
1926 continue;
1927 }
4ea8f8fb 1928 d = s;
74288ac8
GS
1929 if (!*s)
1930 break;
2b622f1a 1931 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1932 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1933 while (++s && *s) {
1934 if (isSPACE(*s)) {
cf756827 1935 if (!popt_copy) {
bfa6c418
NC
1936 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1937 s = popt_copy + (s - d);
1938 d = popt_copy;
cf756827 1939 }
4ea8f8fb
MS
1940 *s++ = '\0';
1941 break;
1942 }
1943 }
1c4db469 1944 if (*d == 't') {
317ea90d
MS
1945 if( !PL_tainting ) {
1946 PL_taint_warn = TRUE;
1947 PL_tainting = TRUE;
1948 }
1c4db469 1949 } else {
97bd5664 1950 moreswitches(d);
1c4db469 1951 }
6224f72b 1952 }
6224f72b
GS
1953 }
1954 }
c7030b81 1955 }
a0d0e21e 1956
87e06404 1957#if defined(USE_SITECUSTOMIZE) && !defined(PERL_IS_MINIPERL)
20ef40cf 1958 if (!minus_f) {
404ad9dc
NC
1959 /* SITELIB_EXP is a function call on Win32.
1960 The games with local $! are to avoid setting errno if there is no
1961 sitecustomize script. */
1962 const char *const sitelib = SITELIB_EXP;
29a861e7 1963 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1964 Perl_newSVpvf(aTHX_
1965 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
20ef40cf
GA
1966 }
1967#endif
1968
6224f72b
GS
1969 if (!scriptname)
1970 scriptname = argv[0];
3280af22 1971 if (PL_e_script) {
6224f72b
GS
1972 argc++,argv--;
1973 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1974 }
bd61b366 1975 else if (scriptname == NULL) {
6224f72b
GS
1976#ifdef MSDOS
1977 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1978 moreswitches("h");
6224f72b
GS
1979#endif
1980 scriptname = "-";
1981 }
1982
b7975bdd
NC
1983 /* Set $^X early so that it can be used for relocatable paths in @INC */
1984 assert (!PL_tainted);
1985 TAINT;
1986 S_set_caret_X(aTHX);
1987 TAINT_NOT;
2cace6ac 1988 init_perllib();
6224f72b 1989
a52eba0e 1990 {
f20b2998 1991 bool suidscript = FALSE;
829372d3 1992
cc69b689 1993 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 1994
2f9285f8 1995 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 1996 linestr_sv, rsfp);
6224f72b 1997
64ca3a65 1998#ifndef PERL_MICRO
a52eba0e
NC
1999# if defined(SIGCHLD) || defined(SIGCLD)
2000 {
2001# ifndef SIGCHLD
2002# define SIGCHLD SIGCLD
2003# endif
2004 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2005 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2006 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2007 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2008 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2009 }
0b5b802d 2010 }
a52eba0e 2011# endif
64ca3a65 2012#endif
0b5b802d 2013
e37778c2 2014 if (PL_doextract) {
faef540c 2015
f20b2998 2016 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2017 setuid scripts. */
2018 forbid_setid('x', suidscript);
f20b2998 2019 /* Hence you can't get here if suidscript is true */
faef540c 2020
2f9285f8 2021 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2022 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2023 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2024 }
f4c556ac 2025 }
6224f72b 2026
ea726b52 2027 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2028 CvUNIQUE_on(PL_compcv);
2029
dd2155a4 2030 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2031
dd69841b
BB
2032 PL_isarev = newHV();
2033
0c4f7ff0 2034 boot_core_PerlIO();
6224f72b 2035 boot_core_UNIVERSAL();
e1a479c5 2036 boot_core_mro();
4a5df386 2037 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2038
2039 if (xsinit)
acfe0abc 2040 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2041#ifndef PERL_MICRO
d0d72822 2042#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2043 init_os_extras();
6224f72b 2044#endif
64ca3a65 2045#endif
6224f72b 2046
29209bc5 2047#ifdef USE_SOCKS
1b9c9cf5
DH
2048# ifdef HAS_SOCKS5_INIT
2049 socks5_init(argv[0]);
2050# else
29209bc5 2051 SOCKSinit(argv[0]);
1b9c9cf5 2052# endif
ac27b0f5 2053#endif
29209bc5 2054
6224f72b
GS
2055 init_predump_symbols();
2056 /* init_postdump_symbols not currently designed to be called */
2057 /* more than once (ENV isn't cleared first, for example) */
2058 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2059 if (!PL_do_undump)
6224f72b
GS
2060 init_postdump_symbols(argc,argv,env);
2061
27da23d5
JH
2062 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2063 * or explicitly in some platforms.
085a54d9 2064 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2065 * look like the user wants to use UTF-8. */
a0fd4948 2066#if defined(__SYMBIAN32__)
27da23d5
JH
2067 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2068#endif
e27b5b51 2069# ifndef PERL_IS_MINIPERL
06e66572
JH
2070 if (PL_unicode) {
2071 /* Requires init_predump_symbols(). */
a05d7ebb 2072 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2073 IO* io;
2074 PerlIO* fp;
2075 SV* sv;
2076
a05d7ebb 2077 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2078 * and the default open disciplines. */
a05d7ebb
JH
2079 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2080 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2081 (fp = IoIFP(io)))
2082 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2083 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2084 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2085 (fp = IoOFP(io)))
2086 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2087 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2088 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2089 (fp = IoOFP(io)))
2090 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2091 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2092 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2093 SVt_PV)))) {
a05d7ebb
JH
2094 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2095 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2096 if (in) {
2097 if (out)
76f68e9b 2098 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2099 else
76f68e9b 2100 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2101 }
2102 else if (out)
76f68e9b 2103 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2104 SvSETMAGIC(sv);
2105 }
b310b053
JH
2106 }
2107 }
e27b5b51 2108#endif
b310b053 2109
c7030b81
NC
2110 {
2111 const char *s;
4ffa73a3
JH
2112 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2113 if (strEQ(s, "unsafe"))
2114 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2115 else if (strEQ(s, "safe"))
2116 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2117 else
2118 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2119 }
c7030b81 2120 }
4ffa73a3 2121
81d86705 2122#ifdef PERL_MAD
c7030b81
NC
2123 {
2124 const char *s;
81d86705
NC
2125 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2126 PL_madskills = 1;
2127 PL_minus_c = 1;
2128 if (!s || !s[0])
2129 PL_xmlfp = PerlIO_stdout();
2130 else {
2131 PL_xmlfp = PerlIO_open(s, "w");
2132 if (!PL_xmlfp)
2133 Perl_croak(aTHX_ "Can't open %s", s);
2134 }
1a9a51d4 2135 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2136 }
c7030b81
NC
2137 }
2138
2139 {
2140 const char *s;
81d86705
NC
2141 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2142 PL_madskills = atoi(s);
1a9a51d4 2143 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2144 }
c7030b81 2145 }
81d86705
NC
2146#endif
2147
5486870f 2148 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2149 PL_subname = newSVpvs("main");
6224f72b 2150
5486870f
DM
2151 if (add_read_e_script)
2152 filter_add(read_e_script, NULL);
2153
6224f72b
GS
2154 /* now parse the script */
2155
93189314 2156 SETERRNO(0,SS_NORMAL);
13765c85 2157 if (yyparse() || PL_parser->error_count) {
3280af22 2158 if (PL_minus_c)
cea2e8a9 2159 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2160 else {
cea2e8a9 2161 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2162 PL_origfilename);
6224f72b
GS
2163 }
2164 }
57843af0 2165 CopLINE_set(PL_curcop, 0);
3280af22 2166 PL_curstash = PL_defstash;
3280af22
NIS
2167 if (PL_e_script) {
2168 SvREFCNT_dec(PL_e_script);
a0714e2c 2169 PL_e_script = NULL;
6224f72b
GS
2170 }
2171
3280af22 2172 if (PL_do_undump)
6224f72b
GS
2173 my_unexec();
2174
57843af0
GS
2175 if (isWARN_ONCE) {
2176 SAVECOPFILE(PL_curcop);
2177 SAVECOPLINE(PL_curcop);
3280af22 2178 gv_check(PL_defstash);
57843af0 2179 }
6224f72b
GS
2180
2181 LEAVE;
2182 FREETMPS;
2183
2184#ifdef MYMALLOC
f6a607bc
RGS
2185 {
2186 const char *s;
6224f72b
GS
2187 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2188 dump_mstats("after compilation:");
f6a607bc 2189 }
6224f72b
GS
2190#endif
2191
2192 ENTER;
3280af22 2193 PL_restartop = 0;
312caa8e 2194 return NULL;
6224f72b
GS
2195}
2196
954c1994
GS
2197/*
2198=for apidoc perl_run
2199
2200Tells a Perl interpreter to run. See L<perlembed>.
2201
2202=cut
2203*/
2204
6224f72b 2205int
0cb96387 2206perl_run(pTHXx)
6224f72b 2207{
97aff369 2208 dVAR;
6224f72b 2209 I32 oldscope;
14dd3ad8 2210 int ret = 0;
db36c5a1 2211 dJMPENV;
6224f72b 2212
7918f24d
NC
2213 PERL_ARGS_ASSERT_PERL_RUN;
2214#ifndef MULTIPLICITY
ed6c66dd 2215 PERL_UNUSED_ARG(my_perl);
7918f24d 2216#endif
9d4ba2ae 2217
3280af22 2218 oldscope = PL_scopestack_ix;
96e176bf
CL
2219#ifdef VMS
2220 VMSISH_HUSHED = 0;
2221#endif
6224f72b 2222
14dd3ad8 2223 JMPENV_PUSH(ret);
6224f72b
GS
2224 switch (ret) {
2225 case 1:
2226 cxstack_ix = -1; /* start context stack again */
312caa8e 2227 goto redo_body;
14dd3ad8 2228 case 0: /* normal completion */
14dd3ad8
GS
2229 redo_body:
2230 run_body(oldscope);
14dd3ad8
GS
2231 /* FALL THROUGH */
2232 case 2: /* my_exit() */
3280af22 2233 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2234 LEAVE;
2235 FREETMPS;
3280af22 2236 PL_curstash = PL_defstash;
3a1ee7e8 2237 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2238 PL_endav && !PL_minus_c)
2239 call_list(oldscope, PL_endav);
6224f72b
GS
2240#ifdef MYMALLOC
2241 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2242 dump_mstats("after execution: ");
2243#endif
37038d91 2244 ret = STATUS_EXIT;
14dd3ad8 2245 break;
6224f72b 2246 case 3:
312caa8e
CS
2247 if (PL_restartop) {
2248 POPSTACK_TO(PL_mainstack);
2249 goto redo_body;
6224f72b 2250 }
bf49b057 2251 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2252 FREETMPS;
14dd3ad8
GS
2253 ret = 1;
2254 break;
6224f72b
GS
2255 }
2256
14dd3ad8
GS
2257 JMPENV_POP;
2258 return ret;
312caa8e
CS
2259}
2260
dd374669 2261STATIC void
14dd3ad8
GS
2262S_run_body(pTHX_ I32 oldscope)
2263{
97aff369 2264 dVAR;
6224f72b 2265 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2266 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2267
3280af22 2268 if (!PL_restartop) {
81d86705
NC
2269#ifdef PERL_MAD
2270 if (PL_xmlfp) {
2271 xmldump_all();
2272 exit(0); /* less likely to core dump than my_exit(0) */
2273 }
2274#endif
cf2782cd 2275#ifdef DEBUGGING
f0e3f042
CS
2276 if (DEBUG_x_TEST || DEBUG_B_TEST)
2277 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2278 if (!DEBUG_q_TEST)
2279 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2280#endif
6224f72b 2281
3280af22 2282 if (PL_minus_c) {
bf49b057 2283 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2284 my_exit(0);
2285 }
3280af22 2286 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2287 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2288 if (PL_initav)
2289 call_list(oldscope, PL_initav);
f1fac472
NC
2290#ifdef PERL_DEBUG_READONLY_OPS
2291 Perl_pending_Slabs_to_ro(aTHX);
2292#endif
6224f72b
GS
2293 }
2294
2295 /* do it */
2296
3280af22 2297 if (PL_restartop) {
533c011a 2298 PL_op = PL_restartop;
3280af22 2299 PL_restartop = 0;
cea2e8a9 2300 CALLRUNOPS(aTHX);
6224f72b 2301 }
3280af22
NIS
2302 else if (PL_main_start) {
2303 CvDEPTH(PL_main_cv) = 1;
533c011a 2304 PL_op = PL_main_start;
cea2e8a9 2305 CALLRUNOPS(aTHX);
6224f72b 2306 }
f6b3007c
JH
2307 my_exit(0);
2308 /* NOTREACHED */
6224f72b
GS
2309}
2310
954c1994 2311/*
ccfc67b7
JH
2312=head1 SV Manipulation Functions
2313
954c1994
GS
2314=for apidoc p||get_sv
2315
64ace3f8
NC
2316Returns the SV of the specified Perl scalar. C<flags> are passed to
2317C<gv_fetchpv>. If C<GV_ADD> is set and the
2318Perl variable does not exist then it will be created. If C<flags> is zero
2319and the variable does not exist then NULL is returned.
954c1994
GS
2320
2321=cut
2322*/
2323
6224f72b 2324SV*
64ace3f8 2325Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2326{
2327 GV *gv;
7918f24d
NC
2328
2329 PERL_ARGS_ASSERT_GET_SV;
2330
64ace3f8 2331 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2332 if (gv)
2333 return GvSV(gv);
a0714e2c 2334 return NULL;
6224f72b
GS
2335}
2336
954c1994 2337/*
ccfc67b7
JH
2338=head1 Array Manipulation Functions
2339
954c1994
GS
2340=for apidoc p||get_av
2341
cbfd0a87
NC
2342Returns the AV of the specified Perl array. C<flags> are passed to
2343C<gv_fetchpv>. If C<GV_ADD> is set and the
2344Perl variable does not exist then it will be created. If C<flags> is zero
2345and the variable does not exist then NULL is returned.
954c1994
GS
2346
2347=cut
2348*/
2349
6224f72b 2350AV*
cbfd0a87 2351Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2352{
cbfd0a87 2353 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2354
2355 PERL_ARGS_ASSERT_GET_AV;
2356
cbfd0a87 2357 if (flags)
6224f72b
GS
2358 return GvAVn(gv);
2359 if (gv)
2360 return GvAV(gv);
7d49f689 2361 return NULL;
6224f72b
GS
2362}
2363
954c1994 2364/*
ccfc67b7
JH
2365=head1 Hash Manipulation Functions
2366
954c1994
GS
2367=for apidoc p||get_hv
2368
6673a63c
NC
2369Returns the HV of the specified Perl hash. C<flags> are passed to
2370C<gv_fetchpv>. If C<GV_ADD> is set and the
2371Perl variable does not exist then it will be created. If C<flags> is zero
2372and the variable does not exist then NULL is returned.
954c1994
GS
2373
2374=cut
2375*/
2376
6224f72b 2377HV*
6673a63c 2378Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2379{
6673a63c 2380 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2381
2382 PERL_ARGS_ASSERT_GET_HV;
2383
6673a63c 2384 if (flags)
a0d0e21e
LW
2385 return GvHVn(gv);
2386 if (gv)
2387 return GvHV(gv);
5c284bb0 2388 return NULL;
a0d0e21e
LW
2389}
2390
954c1994 2391/*
ccfc67b7
JH
2392=head1 CV Manipulation Functions
2393
780a5241
NC
2394=for apidoc p||get_cvn_flags
2395
2396Returns the CV of the specified Perl subroutine. C<flags> are passed to
2397C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2398exist then it will be declared (which has the same effect as saying
2399C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2400then NULL is returned.
2401
954c1994
GS
2402=for apidoc p||get_cv
2403
780a5241 2404Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2405
2406=cut
2407*/
2408
a0d0e21e 2409CV*
780a5241 2410Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2411{
780a5241 2412 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2413 /* XXX this is probably not what they think they're getting.
2414 * It has the same effect as "sub name;", i.e. just a forward
2415 * declaration! */
7918f24d
NC
2416
2417 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2418
780a5241 2419 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2420 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2421 return newSUB(start_subparse(FALSE, 0),
780a5241 2422 newSVOP(OP_CONST, 0, sv),
5f66b61c 2423 NULL, NULL);
780a5241 2424 }
a0d0e21e 2425 if (gv)
8ebc5c01 2426 return GvCVu(gv);
601f1833 2427 return NULL;
a0d0e21e
LW
2428}
2429
2c67934f
NC
2430/* Nothing in core calls this now, but we can't replace it with a macro and
2431 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2432CV*
2433Perl_get_cv(pTHX_ const char *name, I32 flags)
2434{
7918f24d
NC
2435 PERL_ARGS_ASSERT_GET_CV;
2436
780a5241
NC
2437 return get_cvn_flags(name, strlen(name), flags);
2438}
2439
79072805
LW
2440/* Be sure to refetch the stack pointer after calling these routines. */
2441
954c1994 2442/*
ccfc67b7
JH
2443
2444=head1 Callback Functions
2445
954c1994
GS
2446=for apidoc p||call_argv
2447
2448Performs a callback to the specified Perl sub. See L<perlcall>.
2449
2450=cut
2451*/
2452
a0d0e21e 2453I32
8f42b153 2454Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2455
8ac85365
NIS
2456 /* See G_* flags in cop.h */
2457 /* null terminated arg list */
8990e307 2458{
97aff369 2459 dVAR;
a0d0e21e 2460 dSP;
8990e307 2461
7918f24d
NC
2462 PERL_ARGS_ASSERT_CALL_ARGV;
2463
924508f0 2464 PUSHMARK(SP);
a0d0e21e 2465 if (argv) {
8990e307 2466 while (*argv) {
6e449a3a 2467 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2468 argv++;
2469 }
a0d0e21e 2470 PUTBACK;
8990e307 2471 }
864dbfa3 2472 return call_pv(sub_name, flags);
8990e307
LW
2473}
2474
954c1994
GS
2475/*
2476=for apidoc p||call_pv
2477
2478Performs a callback to the specified Perl sub. See L<perlcall>.
2479
2480=cut
2481*/
2482
a0d0e21e 2483I32
864dbfa3 2484Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2485 /* name of the subroutine */
2486 /* See G_* flags in cop.h */
a0d0e21e 2487{
7918f24d
NC
2488 PERL_ARGS_ASSERT_CALL_PV;
2489
0da0e728 2490 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2491}
2492
954c1994
GS
2493/*
2494=for apidoc p||call_method
2495
2496Performs a callback to the specified Perl method. The blessed object must
2497be on the stack. See L<perlcall>.
2498
2499=cut
2500*/
2501
a0d0e21e 2502I32
864dbfa3 2503Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2504 /* name of the subroutine */
2505 /* See G_* flags in cop.h */
a0d0e21e 2506{
46ca9bac 2507 STRLEN len;
7918f24d
NC
2508 PERL_ARGS_ASSERT_CALL_METHOD;
2509
46ca9bac 2510 len = strlen(methname);
2511
2512 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2513 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2514}
2515
2516/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2517/*
2518=for apidoc p||call_sv
2519
2520Performs a callback to the Perl sub whose name is in the SV. See
2521L<perlcall>.
2522
2523=cut
2524*/
2525
a0d0e21e 2526I32
001d637e 2527Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2528 /* See G_* flags in cop.h */
a0d0e21e 2529{
27da23d5 2530 dVAR; dSP;
a0d0e21e 2531 LOGOP myop; /* fake syntax tree node */
968b3946 2532 UNOP method_op;
aa689395 2533 I32 oldmark;
8ea43dc8 2534 VOL I32 retval = 0;
a0d0e21e 2535 I32 oldscope;
54310121 2536 bool oldcatch = CATCH_GET;
6224f72b 2537 int ret;
c4420975 2538 OP* const oldop = PL_op;
db36c5a1 2539 dJMPENV;
1e422769 2540
7918f24d
NC
2541 PERL_ARGS_ASSERT_CALL_SV;
2542
a0d0e21e
LW
2543 if (flags & G_DISCARD) {
2544 ENTER;
2545 SAVETMPS;
2546 }
2f8edad0
NC
2547 if (!(flags & G_WANT)) {
2548 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2549 */
2550 flags |= G_SCALAR;
2551 }
a0d0e21e 2552
aa689395 2553 Zero(&myop, 1, LOGOP);
5f66b61c 2554 myop.op_next = NULL;
f51d4af5 2555 if (!(flags & G_NOARGS))
aa689395 2556 myop.op_flags |= OPf_STACKED;
4f911530 2557 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2558 SAVEOP();
533c011a 2559 PL_op = (OP*)&myop;
aa689395 2560
3280af22
NIS
2561 EXTEND(PL_stack_sp, 1);
2562 *++PL_stack_sp = sv;
aa689395 2563 oldmark = TOPMARK;
3280af22 2564 oldscope = PL_scopestack_ix;
a0d0e21e 2565
3280af22 2566 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2567 /* Handle first BEGIN of -d. */
3280af22 2568 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2569 /* Try harder, since this may have been a sighandler, thus
2570 * curstash may be meaningless. */
ea726b52 2571 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2572 && !(flags & G_NODEBUG))
533c011a 2573 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2574
968b3946
GS
2575 if (flags & G_METHOD) {
2576 Zero(&method_op, 1, UNOP);
2577 method_op.op_next = PL_op;
2578 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2579 method_op.op_type = OP_METHOD;
968b3946 2580 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2581 myop.op_type = OP_ENTERSUB;
f39d0b86 2582 PL_op = (OP*)&method_op;
968b3946
GS
2583 }
2584
312caa8e 2585 if (!(flags & G_EVAL)) {
0cdb2077 2586 CATCH_SET(TRUE);
d6f07c05 2587 CALL_BODY_SUB((OP*)&myop);
312caa8e 2588 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2589 CATCH_SET(oldcatch);
312caa8e
CS
2590 }
2591 else {
d78bda3d 2592 myop.op_other = (OP*)&myop;
3280af22 2593 PL_markstack_ptr--;
edb2152a 2594 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2595 PL_markstack_ptr++;
a0d0e21e 2596
14dd3ad8 2597 JMPENV_PUSH(ret);
edb2152a 2598
6224f72b
GS
2599 switch (ret) {
2600 case 0:
14dd3ad8 2601 redo_body:
d6f07c05 2602 CALL_BODY_SUB((OP*)&myop);
312caa8e 2603 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2604 if (!(flags & G_KEEPERR)) {
ab69dbc2 2605 CLEAR_ERRSV();
8433848b 2606 }
a0d0e21e 2607 break;
6224f72b 2608 case 1:
f86702cc 2609 STATUS_ALL_FAILURE;
a0d0e21e 2610 /* FALL THROUGH */
6224f72b 2611 case 2:
a0d0e21e 2612 /* my_exit() was called */
3280af22 2613 PL_curstash = PL_defstash;
a0d0e21e 2614 FREETMPS;
14dd3ad8 2615 JMPENV_POP;
f86702cc 2616 my_exit_jump();
a0d0e21e 2617 /* NOTREACHED */
6224f72b 2618 case 3:
3280af22 2619 if (PL_restartop) {
533c011a 2620 PL_op = PL_restartop;
3280af22 2621 PL_restartop = 0;
312caa8e 2622 goto redo_body;
a0d0e21e 2623 }
3280af22 2624 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2625 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2626 retval = 0;
2627 else {
2628 retval = 1;
3280af22 2629 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2630 }
312caa8e 2631 break;
a0d0e21e 2632 }
a0d0e21e 2633
edb2152a
NC
2634 if (PL_scopestack_ix > oldscope)
2635 delete_eval_scope();
14dd3ad8 2636 JMPENV_POP;
a0d0e21e 2637 }
1e422769 2638
a0d0e21e 2639 if (flags & G_DISCARD) {
3280af22 2640 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2641 retval = 0;
2642 FREETMPS;
2643 LEAVE;
2644 }
533c011a 2645 PL_op = oldop;
a0d0e21e
LW
2646 return retval;
2647}
2648
6e72f9df 2649/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2650
954c1994
GS
2651/*
2652=for apidoc p||eval_sv
2653
2654Tells Perl to C<eval> the string in the SV.
2655
2656=cut
2657*/
2658
a0d0e21e 2659I32
864dbfa3 2660Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2661
8ac85365 2662 /* See G_* flags in cop.h */
a0d0e21e 2663{
97aff369 2664 dVAR;
924508f0 2665 dSP;
a0d0e21e 2666 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2667 VOL I32 oldmark = SP - PL_stack_base;
2668 VOL I32 retval = 0;
6224f72b 2669 int ret;
c4420975 2670 OP* const oldop = PL_op;
db36c5a1 2671 dJMPENV;
84902520 2672
7918f24d
NC
2673 PERL_ARGS_ASSERT_EVAL_SV;
2674
4633a7c4
LW
2675 if (flags & G_DISCARD) {
2676 ENTER;
2677 SAVETMPS;
2678 }
2679
462e5cf6 2680 SAVEOP();
533c011a
NIS
2681 PL_op = (OP*)&myop;
2682 Zero(PL_op, 1, UNOP);
3280af22
NIS
2683 EXTEND(PL_stack_sp, 1);
2684 *++PL_stack_sp = sv;
79072805 2685
4633a7c4
LW
2686 if (!(flags & G_NOARGS))
2687 myop.op_flags = OPf_STACKED;
5f66b61c 2688 myop.op_next = NULL;
6e72f9df 2689 myop.op_type = OP_ENTEREVAL;
4f911530 2690 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2691 if (flags & G_KEEPERR)
2692 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2693
dedbcade
DM
2694 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2695 * before a PUSHEVAL, which corrupts the stack after a croak */
2696 TAINT_PROPER("eval_sv()");
2697
14dd3ad8 2698 JMPENV_PUSH(ret);
6224f72b
GS
2699 switch (ret) {
2700 case 0:
14dd3ad8 2701 redo_body:
d6f07c05 2702 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2703 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2704 if (!(flags & G_KEEPERR)) {
ab69dbc2 2705 CLEAR_ERRSV();
8433848b 2706 }
4633a7c4 2707 break;
6224f72b 2708 case 1:
f86702cc 2709 STATUS_ALL_FAILURE;
4633a7c4 2710 /* FALL THROUGH */
6224f72b 2711 case 2:
4633a7c4 2712 /* my_exit() was called */
3280af22 2713 PL_curstash = PL_defstash;
4633a7c4 2714 FREETMPS;
14dd3ad8 2715 JMPENV_POP;
f86702cc 2716 my_exit_jump();
4633a7c4 2717 /* NOTREACHED */
6224f72b 2718 case 3:
3280af22 2719 if (PL_restartop) {
533c011a 2720 PL_op = PL_restartop;
3280af22 2721 PL_restartop = 0;
312caa8e 2722 goto redo_body;
4633a7c4 2723 }
3280af22 2724 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2725 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2726 retval = 0;
2727 else {
2728 retval = 1;
3280af22 2729 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2730 }
312caa8e 2731 break;
4633a7c4
LW
2732 }
2733
14dd3ad8 2734 JMPENV_POP;
4633a7c4 2735 if (flags & G_DISCARD) {
3280af22 2736 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2737 retval = 0;
2738 FREETMPS;
2739 LEAVE;
2740 }
533c011a 2741 PL_op = oldop;
4633a7c4
LW
2742 return retval;
2743}
2744
954c1994
GS
2745/*
2746=for apidoc p||eval_pv
2747
2748Tells Perl to C<eval> the given string and return an SV* result.
2749
2750=cut
2751*/
2752
137443ea 2753SV*
864dbfa3 2754Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2755{
97aff369 2756 dVAR;
137443ea
PP
2757 dSP;
2758 SV* sv = newSVpv(p, 0);
2759
7918f24d
NC
2760 PERL_ARGS_ASSERT_EVAL_PV;
2761
864dbfa3 2762 eval_sv(sv, G_SCALAR);
137443ea
PP
2763 SvREFCNT_dec(sv);
2764
2765 SPAGAIN;
2766 sv = POPs;
2767 PUTBACK;
2768
2d8e6c8d 2769 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2770 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2771 }
137443ea
PP
2772
2773 return sv;
2774}
2775
4633a7c4
LW
2776/* Require a module. */
2777
954c1994 2778/*
ccfc67b7
JH
2779=head1 Embedding Functions
2780
954c1994
GS
2781=for apidoc p||require_pv
2782
7d3fb230
BS
2783Tells Perl to C<require> the file named by the string argument. It is
2784analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2785implemented that way; consider using load_module instead.
954c1994 2786
7d3fb230 2787=cut */
954c1994 2788
4633a7c4 2789void
864dbfa3 2790Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2791{
97aff369 2792 dVAR;
d3acc0f7 2793 dSP;
97aff369 2794 SV* sv;
7918f24d
NC
2795
2796 PERL_ARGS_ASSERT_REQUIRE_PV;
2797
e788e7d3 2798 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2799 PUTBACK;
be41e5d9
NC
2800 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2801 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2802 SPAGAIN;
2803 POPSTACK;
79072805
LW
2804}
2805
76e3520e 2806STATIC void
e1ec3a88 2807S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2808{
ab821d7f 2809 /* This message really ought to be max 23 lines.
75c72d73 2810 * Removed -h because the user already knows that option. Others? */
fb73857a 2811
27da23d5 2812 static const char * const usage_msg[] = {
aefc56c5 2813"-0[octal] specify record separator (\\0, if no argument)",
aefc56c5
SF
2814"-a autosplit mode with -n or -p (splits $_ into @F)",
2815"-C[number/list] enables the listed Unicode features",
2816"-c check syntax only (runs BEGIN and CHECK blocks)",
2817"-d[:debugger] run program under debugger",
2818"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2819"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2820"-E program like -e, but enables all optional features",
aefc56c5 2821"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2822"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2823"-i[extension] edit <> files in place (makes backup if extension supplied)",
2824"-Idirectory specify @INC/#include directory (several -I's allowed)",
2825"-l[octal] enable line ending processing, specifies line terminator",
2826"-[mM][-]module execute \"use/no module...\" before executing program",
2827"-n assume \"while (<>) { ... }\" loop around program",
2828"-p assume loop like -n but print line also, like sed",
aefc56c5
SF
2829"-s enable rudimentary parsing for switches after programfile",
2830"-S look for programfile using PATH environment variable",
2831"-t enable tainting warnings",
2832"-T enable tainting checks",
2833"-u dump core after parsing program",
2834"-U allow unsafe operations",
2835"-v print version, subversion (includes VERY IMPORTANT perl info)",
2836"-V[:variable] print configuration summary (or a single Config.pm variable)",
2837"-w enable many useful warnings (RECOMMENDED)",
2838"-W enable all warnings",
2839"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2840"-X disable all warnings",
fb73857a
PP
2841"\n",
2842NULL
2843};
27da23d5 2844 const char * const *p = usage_msg;
fb73857a 2845
7918f24d
NC
2846 PERL_ARGS_ASSERT_USAGE;
2847
b0e47665
GS
2848 PerlIO_printf(PerlIO_stdout(),
2849 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2850 name);
fb73857a 2851 while (*p)
b0e47665 2852 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2853}
2854
b4ab917c
DM
2855/* convert a string of -D options (or digits) into an int.
2856 * sets *s to point to the char after the options */
2857
2858#ifdef DEBUGGING
2859int
e1ec3a88 2860Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2861{
27da23d5 2862 static const char * const usage_msgd[] = {
e6e64d9b
JC
2863 " Debugging flag values: (see also -d)",
2864 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2865 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2866 " l Context (loop) stack processing",
2867 " t Trace execution",
2868 " o Method and overloading resolution",
2869 " c String/numeric conversions",
4c84d7f2 2870 " P Print profiling info, source file input state",
d7a2c63c 2871 " m Memory and SV allocation",
e6e64d9b
JC
2872 " f Format processing",
2873 " r Regular expression parsing and execution",
2874 " x Syntax tree dump",
3679267a 2875 " u Tainting checks",
e6e64d9b
JC
2876 " H Hash dump -- usurps values()",
2877 " X Scratchpad allocation",
2878 " D Cleaning up",
e6e64d9b
JC
2879 " T Tokenising",
2880 " R Include reference counts of dumped variables (eg when using -Ds)",
2881 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2882 " v Verbose: use in conjunction with other flags",
2883 " C Copy On Write",
2884 " A Consistency checks on internal structures",
3679267a 2885 " q quiet - currently only suppresses the 'EXECUTING' message",
d7c0d282 2886 " M trace smart match resolution",
cc8773c0 2887 " B dump suBroutine definitions, including special Blocks like BEGIN",
e6e64d9b
JC
2888 NULL
2889 };
b4ab917c 2890 int i = 0;
7918f24d
NC
2891
2892 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2893
b4ab917c
DM
2894 if (isALPHA(**s)) {
2895 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2896 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2897
2898 for (; isALNUM(**s); (*s)++) {
c4420975 2899 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2900 if (d)
2901 i |= 1 << (d - debopts);
2902 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2903 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2904 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2905 }
2906 }
e6e64d9b 2907 else if (isDIGIT(**s)) {
b4ab917c
DM
2908 i = atoi(*s);
2909 for (; isALNUM(**s); (*s)++) ;
2910 }
ddcf8bc1 2911 else if (givehelp) {
06e869a4 2912 const char *const *p = usage_msgd;
e6e64d9b
JC
2913 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2914 }
b4ab917c
DM
2915# ifdef EBCDIC
2916 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2917 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2918 "-Dp not implemented on this platform\n");
2919# endif
2920 return i;
2921}
2922#endif
2923
79072805
LW
2924/* This routine handles any switches that can be given during run */
2925
c7030b81
NC
2926const char *
2927Perl_moreswitches(pTHX_ const char *s)
79072805 2928{
27da23d5 2929 dVAR;
84c133a0 2930 UV rschar;
0544e6df 2931 const char option = *s; /* used to remember option in -m/-M code */
79072805 2932
7918f24d
NC
2933 PERL_ARGS_ASSERT_MORESWITCHES;
2934
79072805
LW
2935 switch (*s) {
2936 case '0':
a863c7d1 2937 {
f2095865 2938 I32 flags = 0;
a3b680e6 2939 STRLEN numlen;
f2095865
JH
2940
2941 SvREFCNT_dec(PL_rs);
2942 if (s[1] == 'x' && s[2]) {
a3b680e6 2943 const char *e = s+=2;
f2095865
JH
2944 U8 *tmps;
2945
a3b680e6
AL
2946 while (*e)
2947 e++;
f2095865
JH
2948 numlen = e - s;
2949 flags = PERL_SCAN_SILENT_ILLDIGIT;
2950 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2951 if (s + numlen < e) {
2952 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2953 numlen = 0;
2954 s--;
2955 }
396482e1 2956 PL_rs = newSVpvs("");
c5661c80 2957 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2958 tmps = (U8*)SvPVX(PL_rs);
2959 uvchr_to_utf8(tmps, rschar);
2960 SvCUR_set(PL_rs, UNISKIP(rschar));
2961 SvUTF8_on(PL_rs);
2962 }
2963 else {
2964 numlen = 4;
2965 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2966 if (rschar & ~((U8)~0))
2967 PL_rs = &PL_sv_undef;
2968 else if (!rschar && numlen >= 2)
396482e1 2969 PL_rs = newSVpvs("");
f2095865
JH
2970 else {
2971 char ch = (char)rschar;
2972 PL_rs = newSVpvn(&ch, 1);
2973 }
2974 }
64ace3f8 2975 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 2976 return s + numlen;
a863c7d1 2977 }
46487f74 2978 case 'C':
a05d7ebb 2979 s++;
dd374669 2980 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
2981 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
2982 PL_utf8cache = -1;
46487f74 2983 return s;
2304df62 2984 case 'F':
3280af22 2985 PL_minus_F = TRUE;
ebce5377
RGS
2986 PL_splitstr = ++s;
2987 while (*s && !isSPACE(*s)) ++s;
e49e380e 2988 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 2989 return s;
79072805 2990 case 'a':
3280af22 2991 PL_minus_a = TRUE;
79072805
LW
2992 s++;
2993 return s;
2994 case 'c':
3280af22 2995 PL_minus_c = TRUE;
79072805
LW
2996 s++;
2997 return s;
2998 case 'd':
f20b2998 2999 forbid_setid('d', FALSE);
4633a7c4 3000 s++;
2cbb2ee1
RGS
3001
3002 /* -dt indicates to the debugger that threads will be used */
3003 if (*s == 't' && !isALNUM(s[1])) {
3004 ++s;
3005 my_setenv("PERL5DB_THREADED", "1");
3006 }
3007
70c94a19
RR
3008 /* The following permits -d:Mod to accepts arguments following an =
3009 in the fashion that -MSome::Mod does. */
3010 if (*s == ':' || *s == '=') {
f85893a1
NC
3011 const char *start = ++s;
3012 const char *const end = s + strlen(s);
396482e1 3013 SV * const sv = newSVpvs("use Devel::");
f85893a1 3014
70c94a19
RR
3015 /* We now allow -d:Module=Foo,Bar */
3016 while(isALNUM(*s) || *s==':') ++s;
3017 if (*s != '=')
f85893a1 3018 sv_catpvn(sv, start, end - start);
70c94a19
RR
3019 else {
3020 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3021 /* Don't use NUL as q// delimiter here, this string goes in the
3022 * environment. */
3023 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3024 }
f85893a1 3025 s = end;
184f32ec 3026 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3027 SvREFCNT_dec(sv);
4633a7c4 3028 }
ed094faf 3029 if (!PL_perldb) {
3280af22 3030 PL_perldb = PERLDB_ALL;
a0d0e21e 3031 init_debugger();
ed094faf 3032 }
79072805
LW
3033 return s;
3034 case 'D':
0453d815 3035 {
79072805 3036#ifdef DEBUGGING
f20b2998 3037 forbid_setid('D', FALSE);
b4ab917c 3038 s++;
dd374669 3039 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3040#else /* !DEBUGGING */
0453d815 3041 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3042 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3043 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3044 for (s++; isALNUM(*s); s++) ;
79072805 3045#endif
79072805 3046 return s;
0453d815 3047 }
4633a7c4 3048 case 'h':
ac27b0f5 3049 usage(PL_origargv[0]);
7ca617d0 3050 my_exit(0);
79072805 3051 case 'i':
43c5f42d 3052 Safefree(PL_inplace);
c030f24b
GH
3053#if defined(__CYGWIN__) /* do backup extension automagically */
3054 if (*(s+1) == '\0') {
c86a4f2e 3055 PL_inplace = savepvs(".bak");
c030f24b
GH
3056 return s+1;
3057 }
3058#endif /* __CYGWIN__ */
5ef5d758 3059 {
d4c19fe8 3060 const char * const start = ++s;
5ef5d758
NC
3061 while (*s && !isSPACE(*s))
3062 ++s;
3063
3064 PL_inplace = savepvn(start, s - start);
3065 }
7b8d334a 3066 if (*s) {
5ef5d758 3067 ++s;
7b8d334a 3068 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3069 s++;
7b8d334a 3070 }
fb73857a 3071 return s;
4e49a025 3072 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3073 forbid_setid('I', FALSE);
fb73857a
PP
3074 ++s;
3075 while (*s && isSPACE(*s))
3076 ++s;
3077 if (*s) {
c7030b81 3078 const char *e, *p;
0df16ed7
GS
3079 p = s;
3080 /* ignore trailing spaces (possibly followed by other switches) */
3081 do {
3082 for (e = p; *e && !isSPACE(*e); e++) ;
3083 p = e;
3084 while (isSPACE(*p))
3085 p++;
3086 } while (*p && *p != '-');
55b4bc1c 3087 incpush(s, e-s,
e28f3139 3088 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3089 s = p;
3090 if (*s == '-')
3091 s++;
79072805
LW
3092 }
3093 else
a67e862a 3094 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3095 return s;
79072805 3096 case 'l':
3280af22 3097 PL_minus_l = TRUE;
79072805 3098 s++;
7889fe52
NIS
3099 if (PL_ors_sv) {
3100 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3101 PL_ors_sv = NULL;
7889fe52 3102 }
79072805 3103 if (isDIGIT(*s)) {
53305cf1 3104 I32 flags = 0;
a3b680e6 3105 STRLEN numlen;
396482e1 3106 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3107 numlen = 3 + (*s == '0');
3108 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3109 s += numlen;
3110 }
3111 else {
8bfdd7d9 3112 if (RsPARA(PL_rs)) {
396482e1 3113 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3114 }
3115 else {
8bfdd7d9 3116 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3117 }
79072805
LW
3118 }
3119 return s;
1a30305b 3120 case 'M':
f20b2998 3121 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3122 /* FALL THROUGH */
3123 case 'm':
f20b2998 3124 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3125 if (*++s) {
c7030b81 3126 const char *start;
b64cb68c 3127 const char *end;
11343788 3128 SV *sv;
e1ec3a88 3129 const char *use = "use ";
0544e6df 3130 bool colon = FALSE;
a5f75d66 3131 /* -M-foo == 'no foo' */
d0043bd1
NC
3132 /* Leading space on " no " is deliberate, to make both
3133 possibilities the same length. */
3134 if (*s == '-') { use = " no "; ++s; }
3135 sv = newSVpvn(use,4);
a5f75d66 3136 start = s;
1a30305b 3137 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3138 while(isALNUM(*s) || *s==':') {
3139 if( *s++ == ':' ) {
3140 if( *s == ':' )
3141 s++;
3142 else
3143 colon = TRUE;
3144 }
3145 }
3146 if (s == start)
3147 Perl_croak(aTHX_ "Module name required with -%c option",
3148 option);
3149 if (colon)
3150 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3151 "contains single ':'",
63da6837 3152 (int)(s - start), start, option);
b64cb68c 3153 end = s + strlen(s);
c07a80fd 3154 if (*s != '=') {
b64cb68c 3155 sv_catpvn(sv, start, end - start);
0544e6df 3156 if (option == 'm') {
c07a80fd 3157 if (*s != '\0')
cea2e8a9 3158 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3159 sv_catpvs( sv, " ()");
c07a80fd
PP
3160 }
3161 } else {
11343788 3162 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3163 /* Use NUL as q''-delimiter. */
3164 sv_catpvs(sv, " split(/,/,q\0");
3165 ++s;
3166 sv_catpvn(sv, s, end - s);
396482e1 3167 sv_catpvs(sv, "\0)");
c07a80fd 3168 }
b64cb68c 3169 s = end;
29a861e7 3170 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3171 }
3172 else
0544e6df 3173 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3174 return s;
79072805 3175 case 'n':
3280af22 3176 PL_minus_n = TRUE;
79072805
LW
3177 s++;
3178 return s;
3179 case 'p':
3280af22 3180 PL_minus_p = TRUE;
79072805
LW
3181 s++;
3182 return s;
3183 case 's':
f20b2998 3184 forbid_setid('s', FALSE);
3280af22 3185 PL_doswitches = TRUE;
79072805
LW
3186 s++;
3187 return s;
6537fe72
MS
3188 case 't':
3189 if (!PL_tainting)
22f7c9c9 3190 TOO_LATE_FOR('t');
6537fe72
MS
3191 s++;
3192 return s;
463ee0b2 3193 case 'T':
3280af22 3194 if (!PL_tainting)
22f7c9c9 3195 TOO_LATE_FOR('T');
463ee0b2
LW
3196 s++;
3197 return s;
79072805 3198 case 'u':
3280af22 3199 PL_do_undump = TRUE;
79072805
LW
3200 s++;
3201 return s;
3202 case 'U':
3280af22 3203 PL_unsafe = TRUE;
79072805
LW
3204 s++;
3205 return s;
3206 case 'v':
d7aa5382 3207 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3208 upg_version(PL_patchlevel, TRUE);
8e9464f1 3209#if !defined(DGUX)
46807d8e
YO
3210 {
3211 SV* level= vstringify(PL_patchlevel);
3212#ifdef PERL_PATCHNUM
23d483e2
NC
3213# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3214 SV *num = newSVpvs(PERL_PATCHNUM "*");
3215# else
3216 SV *num = newSVpvs(PERL_PATCHNUM);
3217# endif
46807d8e
YO
3218
3219 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3220 SvREFCNT_dec(level);
3221 level= num;
3222 } else {
d0a9311f 3223 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3224 SvREFCNT_dec(num);
3225 }
3226 #endif
3227 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3228 "\nThis is perl " STRINGIFY(PERL_REVISION)
3229 ", version " STRINGIFY(PERL_VERSION)
3230 ", subversion " STRINGIFY(PERL_SUBVERSION)
3231 " (%"SVf") built for " ARCHNAME, level
3232 );
46807d8e
YO
3233 SvREFCNT_dec(level);
3234 }
8e9464f1
JH
3235#else /* DGUX */
3236/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3237 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3238 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3239 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3240 PerlIO_printf(PerlIO_stdout(),
3241 Perl_form(aTHX_ " built under %s at %s %s\n",
3242 OSNAME, __DATE__, __TIME__));
3243 PerlIO_printf(PerlIO_stdout(),
3244 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3245 OSVERS));
8e9464f1 3246#endif /* !DGUX */
fb73857a
PP
3247#if defined(LOCAL_PATCH_COUNT)
3248 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3249 PerlIO_printf(PerlIO_stdout(),
3250 "\n(with %d registered patch%s, "
3251 "see perl -V for more detail)",
bb7a0f54 3252 LOCAL_PATCH_COUNT,
b0e47665 3253 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3254#endif
1a30305b 3255
b0e47665 3256 PerlIO_printf(PerlIO_stdout(),
32709fdf 3257 "\n\nCopyright 1987-2010, Larry Wall\n");
79072805 3258#ifdef MSDOS
b0e47665
GS
3259 PerlIO_printf(PerlIO_stdout(),
3260 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3261#endif
3262#ifdef DJGPP
b0e47665
GS
3263 PerlIO_printf(PerlIO_stdout(),
3264 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3265 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3266#endif
79072805 3267#ifdef OS2
b0e47665
GS
3268 PerlIO_printf(PerlIO_stdout(),
3269 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3270 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3271#endif
79072805 3272#ifdef atarist
b0e47665
GS
3273 PerlIO_printf(PerlIO_stdout(),
3274 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3275#endif
a3f9223b 3276#ifdef __BEOS__
b0e47665
GS
3277 PerlIO_printf(PerlIO_stdout(),
3278 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3279#endif
1d84e8df 3280#ifdef MPE
b0e47665 3281 PerlIO_printf(PerlIO_stdout(),
e583a879 3282 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3283#endif
9d116dd7 3284#ifdef OEMVS
b0e47665
GS
3285 PerlIO_printf(PerlIO_stdout(),
3286 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3287#endif
495c5fdc 3288#ifdef __VOS__
b0e47665 3289 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3290 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3291#endif
092bebab 3292#ifdef __OPEN_VM
b0e47665
GS
3293 PerlIO_printf(PerlIO_stdout(),
3294 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3295#endif
a1a0e61e 3296#ifdef POSIX_BC
b0e47665
GS
3297 PerlIO_printf(PerlIO_stdout(),
3298 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3299#endif
f83d2536 3300#ifdef EPOC
b0e47665 3301 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3302 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3303#endif
e1caacb4 3304#ifdef UNDER_CE
b475b3e6
JH
3305 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3306 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3307 wce_hitreturn();
3308#endif
a0fd4948 3309#ifdef __SYMBIAN32__
27da23d5
JH
3310 PerlIO_printf(PerlIO_stdout(),
3311 "Symbian port by Nokia, 2004-2005\n");
3312#endif
baed7233
DL
3313#ifdef BINARY_BUILD_NOTICE
3314 BINARY_BUILD_NOTICE;
3315#endif
b0e47665
GS
3316 PerlIO_printf(PerlIO_stdout(),
3317 "\n\
79072805 3318Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3319GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3320Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3321this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3322Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3323 my_exit(0);
79072805 3324 case 'w':
b2e5e6ba 3325 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3326 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3327 }
599cee73
PM
3328 s++;
3329 return s;
3330 case 'W':
ac27b0f5 3331 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3332 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3333 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3334 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3335 s++;
3336 return s;
3337 case 'X':
ac27b0f5 3338 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3339 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3340 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3341 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3342 s++;
3343 return s;
a0d0e21e 3344 case '*':
79072805 3345 case ' ':
d3133c89
NC
3346 while( *s == ' ' )
3347 ++s;
3348 if (s[0] == '-') /* Additional switches on #! line. */
3349 return s+1;
79072805 3350 break;
a0d0e21e 3351 case '-':
79072805 3352 case 0:
51882d45 3353#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3354 case '\r':
3355#endif
79072805
LW
3356 case '\n':
3357 case '\t':
3358 break;
aa689395
PP
3359#ifdef ALTERNATE_SHEBANG
3360 case 'S': /* OS/2 needs -S on "extproc" line. */
3361 break;
3362#endif
79072805 3363 default:
cea2e8a9 3364 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3365 }
bd61b366 3366 return NULL;
79072805
LW
3367}
3368
3369/* compliments of Tom Christiansen */
3370
3371/* unexec() can be found in the Gnu emacs distribution */
ee580363 3372/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3373
3374void
864dbfa3 3375Perl_my_unexec(pTHX)
79072805 3376{
b37c2d43 3377 PERL_UNUSED_CONTEXT;
79072805 3378#ifdef UNEXEC
b37c2d43
AL
3379 SV * prog = newSVpv(BIN_EXP, 0);
3380 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3381 int status = 1;
79072805
LW
3382 extern int etext;
3383
396482e1 3384 sv_catpvs(prog, "/perl");
396482e1 3385 sv_catpvs(file, ".perldump");
79072805 3386
ee580363
GS
3387 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3388 /* unexec prints msg to stderr in case of failure */
6ad3d225 3389 PerlProc_exit(status);
79072805 3390#else
a5f75d66
AD
3391# ifdef VMS
3392# include <lib$routines.h>
3393 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3394# elif defined(WIN32) || defined(__CYGWIN__)
3395 Perl_croak(aTHX_ "dump is not supported");
aa689395 3396# else
79072805 3397 ABORT(); /* for use with undump */
aa689395 3398# endif
a5f75d66 3399#endif
79072805
LW
3400}
3401
cb68f92d
GS
3402/* initialize curinterp */
3403STATIC void
cea2e8a9 3404S_init_interp(pTHX)
cb68f92d 3405{
97aff369 3406 dVAR;
acfe0abc
GS
3407#ifdef MULTIPLICITY
3408# define PERLVAR(var,type)
3409# define PERLVARA(var,n,type)
3410# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3411# define PERLVARI(var,type,init) aTHX->var = init;
3412# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3413# else
acfe0abc
GS
3414# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3415# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3416# endif
acfe0abc 3417# include "intrpvar.h"
acfe0abc
GS
3418# undef PERLVAR
3419# undef PERLVARA
3420# undef PERLVARI
3421# undef PERLVARIC
3422#else
3423# define PERLVAR(var,type)
3424# define PERLVARA(var,n,type)
3425# define PERLVARI(var,type,init) PL_##var = init;
3426# define PERLVARIC(var,type,init) PL_##var = init;
3427# include "intrpvar.h"
acfe0abc
GS
3428# undef PERLVAR
3429# undef PERLVARA
3430# undef PERLVARI
3431# undef PERLVARIC
cb68f92d
GS
3432#endif
3433
46ab3289
NC
3434 /* As these are inside a structure, PERLVARI isn't capable of initialising
3435 them */
6c3f0a89
NC
3436 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3437 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3438}
3439
76e3520e 3440STATIC void
cea2e8a9 3441S_init_main_stash(pTHX)
79072805 3442{
97aff369 3443 dVAR;
463ee0b2 3444 GV *gv;
6e72f9df 3445
3280af22 3446 PL_curstash = PL_defstash = newHV();
23579a14
NC
3447 /* We know that the string "main" will be in the global shared string
3448 table, so it's a small saving to use it rather than allocate another
3449 8 bytes. */
18916d0d 3450 PL_curstname = newSVpvs_share("main");
fafc274c 3451 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3452 /* If we hadn't caused another reference to "main" to be in the shared
3453 string table above, then it would be worth reordering these two,
3454 because otherwise all we do is delete "main" from it as a consequence
3455 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3456 SvREFCNT_dec(GvHV(gv));
23579a14 3457 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3458 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3459 SvREADONLY_on(gv);
fafc274c
NC
3460 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3461 SVt_PVAV)));
5a5094bd 3462 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3463 GvMULTI_on(PL_incgv);
fafc274c 3464 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3465 GvMULTI_on(PL_hintgv);
fafc274c 3466 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3467 SvREFCNT_inc_simple_void(PL_defgv);
fafc274c 3468 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5a5094bd 3469 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3470 GvMULTI_on(PL_errgv);
fafc274c 3471 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22 3472 GvMULTI_on(PL_replgv);
cea2e8a9 3473 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3474#ifdef PERL_DONT_CREATE_GVSV
3475 gv_SVadd(PL_errgv);
3476#endif
38a03e6e 3477 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
ab69dbc2 3478 CLEAR_ERRSV();
3280af22 3479 PL_curstash = PL_defstash;
11faa288 3480 CopSTASH_set(&PL_compiling, PL_defstash);
5c1737d1
NC
3481 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3482 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3483 SVt_PVHV));
4633a7c4 3484 /* We must init $/ before switches are processed. */
64ace3f8 3485 sv_setpvs(get_sv("/", GV_ADD), "\n");
79072805
LW
3486}
3487
fdf5d70d 3488STATIC int
2f352907 3489S_open_script(pTHX_ const char *scriptname, bool dosearch,
f20b2998 3490 bool *suidscript, PerlIO **rsfpp)