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[perl #40389] perl_destruct() leaks PL_defstash
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
32709fdf
A
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 by Larry Wall
6 * and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of Eärendil
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
378cc40b 27#include "EXTERN.h"
864dbfa3 28#define PERL_IN_PERL_C
378cc40b 29#include "perl.h"
e3321bb0 30#include "patchlevel.h" /* for local_patches */
4a5df386 31#include "XSUB.h"
378cc40b 32
011f1a1a
JH
33#ifdef NETWARE
34#include "nwutil.h"
011f1a1a
JH
35#endif
36
df5cef82 37/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW
38#ifdef I_UNISTD
39#include <unistd.h>
40#endif
a0d0e21e 41
2aa47728
NC
42#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
43# ifdef I_SYS_WAIT
44# include <sys/wait.h>
45# endif
bf357333
NC
46# ifdef I_SYSUIO
47# include <sys/uio.h>
48# endif
49
50union control_un {
51 struct cmsghdr cm;
52 char control[CMSG_SPACE(sizeof(int))];
53};
54
2aa47728
NC
55#endif
56
5311654c
JH
57#ifdef __BEOS__
58# define HZ 1000000
59#endif
60
61#ifndef HZ
62# ifdef CLK_TCK
63# define HZ CLK_TCK
64# else
65# define HZ 60
66# endif
67#endif
68
7114a2d2 69#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 70char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
71#endif
72
acfe0abc 73static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 74
cc69b689 75#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 76/* Drop everything. Heck, don't even try to call it */
cc69b689
NC
77# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
78#else
ec2019ad 79/* Drop almost everything */
cc69b689 80# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 81#endif
8d063cd8 82
d6f07c05
AL
83#define CALL_BODY_EVAL(myop) \
84 if (PL_op == (myop)) \
139d0ce6 85 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX); \
d6f07c05
AL
86 if (PL_op) \
87 CALLRUNOPS(aTHX);
88
89#define CALL_BODY_SUB(myop) \
90 if (PL_op == (myop)) \
139d0ce6 91 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
92 if (PL_op) \
93 CALLRUNOPS(aTHX);
94
95#define CALL_LIST_BODY(cv) \
96 PUSHMARK(PL_stack_sp); \
ad64d0ec 97 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
d6f07c05 98
e6827a76 99static void
daa7d858 100S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 101{
27da23d5 102 dVAR;
e6827a76
NC
103 if (!PL_curinterp) {
104 PERL_SET_INTERP(my_perl);
3db8f154 105#if defined(USE_ITHREADS)
e6827a76
NC
106 INIT_THREADS;
107 ALLOC_THREAD_KEY;
108 PERL_SET_THX(my_perl);
109 OP_REFCNT_INIT;
71ad1b0c 110 HINTS_REFCNT_INIT;
e6827a76 111 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
112 MUTEX_INIT(&PL_my_ctx_mutex);
113# endif
e6827a76 114 }
c0bce9aa
NC
115#if defined(USE_ITHREADS)
116 else
117#else
118 /* This always happens for non-ithreads */
119#endif
120 {
e6827a76
NC
121 PERL_SET_THX(my_perl);
122 }
123}
06d86050 124
cbec8ebe
DM
125
126/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
127
128void
129Perl_sys_init(int* argc, char*** argv)
130{
4fc0badb 131 dVAR;
7918f24d
NC
132
133 PERL_ARGS_ASSERT_SYS_INIT;
134
cbec8ebe
DM
135 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
136 PERL_UNUSED_ARG(argv);
137 PERL_SYS_INIT_BODY(argc, argv);
138}
139
140void
141Perl_sys_init3(int* argc, char*** argv, char*** env)
142{
4fc0badb 143 dVAR;
7918f24d
NC
144
145 PERL_ARGS_ASSERT_SYS_INIT3;
146
cbec8ebe
DM
147 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
148 PERL_UNUSED_ARG(argv);
149 PERL_UNUSED_ARG(env);
150 PERL_SYS_INIT3_BODY(argc, argv, env);
151}
152
153void
d0820ef1 154Perl_sys_term()
cbec8ebe 155{
4fc0badb 156 dVAR;
bf81751b
DM
157 if (!PL_veto_cleanup) {
158 PERL_SYS_TERM_BODY();
159 }
cbec8ebe
DM
160}
161
162
32e30700
GS
163#ifdef PERL_IMPLICIT_SYS
164PerlInterpreter *
7766f137
GS
165perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
166 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
167 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
168 struct IPerlDir* ipD, struct IPerlSock* ipS,
169 struct IPerlProc* ipP)
170{
171 PerlInterpreter *my_perl;
7918f24d
NC
172
173 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
174
9f653bb5 175 /* Newx() needs interpreter, so call malloc() instead */
32e30700 176 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 177 S_init_tls_and_interp(my_perl);
32e30700
GS
178 Zero(my_perl, 1, PerlInterpreter);
179 PL_Mem = ipM;
7766f137
GS
180 PL_MemShared = ipMS;
181 PL_MemParse = ipMP;
32e30700
GS
182 PL_Env = ipE;
183 PL_StdIO = ipStd;
184 PL_LIO = ipLIO;
185 PL_Dir = ipD;
186 PL_Sock = ipS;
187 PL_Proc = ipP;
7cb608b5 188 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 189
32e30700
GS
190 return my_perl;
191}
192#else
954c1994
GS
193
194/*
ccfc67b7
JH
195=head1 Embedding Functions
196
954c1994
GS
197=for apidoc perl_alloc
198
199Allocates a new Perl interpreter. See L<perlembed>.
200
201=cut
202*/
203
93a17b20 204PerlInterpreter *
cea2e8a9 205perl_alloc(void)
79072805 206{
cea2e8a9 207 PerlInterpreter *my_perl;
79072805 208
9f653bb5 209 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 210 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 211
e6827a76 212 S_init_tls_and_interp(my_perl);
7cb608b5 213#ifndef PERL_TRACK_MEMPOOL
07409e01 214 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
215#else
216 Zero(my_perl, 1, PerlInterpreter);
217 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
218 return my_perl;
219#endif
79072805 220}
32e30700 221#endif /* PERL_IMPLICIT_SYS */
79072805 222
954c1994
GS
223/*
224=for apidoc perl_construct
225
226Initializes a new Perl interpreter. See L<perlembed>.
227
228=cut
229*/
230
79072805 231void
0cb96387 232perl_construct(pTHXx)
79072805 233{
27da23d5 234 dVAR;
7918f24d
NC
235
236 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
237
8990e307 238#ifdef MULTIPLICITY
54aff467 239 init_interp();
ac27b0f5 240 PL_perl_destruct_level = 1;
54aff467 241#else
7918f24d 242 PERL_UNUSED_ARG(my_perl);
54aff467
GS
243 if (PL_perl_destruct_level > 0)
244 init_interp();
245#endif
34caed6d
DM
246 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
247
34caed6d
DM
248 /* set read-only and try to insure than we wont see REFCNT==0
249 very often */
250
251 SvREADONLY_on(&PL_sv_undef);
252 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
253
254 sv_setpv(&PL_sv_no,PL_No);
255 /* value lookup in void context - happens to have the side effect
a43d94f2
NC
256 of caching the numeric forms. However, as &PL_sv_no doesn't contain
257 a string that is a valid numer, we have to turn the public flags by
258 hand: */
34caed6d 259 SvNV(&PL_sv_no);
c1939273 260 SvIV(&PL_sv_no);
a43d94f2
NC
261 SvIOK_on(&PL_sv_no);
262 SvNOK_on(&PL_sv_no);
34caed6d
DM
263 SvREADONLY_on(&PL_sv_no);
264 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
265
266 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 267 SvNV(&PL_sv_yes);
c1939273 268 SvIV(&PL_sv_yes);
34caed6d
DM
269 SvREADONLY_on(&PL_sv_yes);
270 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
271
272 SvREADONLY_on(&PL_sv_placeholder);
273 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
274
275 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 276#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 277 PL_pidstatus = newHV();
ca0c25f6 278#endif
79072805 279
396482e1 280 PL_rs = newSVpvs("\n");
dc92893f 281
cea2e8a9 282 init_stacks();
79072805 283
748a9306 284 init_ids();
a5f75d66 285
312caa8e 286 JMPENV_BOOTSTRAP;
f86702cc
PP
287 STATUS_ALL_SUCCESS;
288
0672f40e 289 init_i18nl10n(1);
36477c24 290 SET_NUMERIC_STANDARD();
0b5b802d 291
ab821d7f 292#if defined(LOCAL_PATCH_COUNT)
3280af22 293 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
294#endif
295
52853b95
GS
296#ifdef HAVE_INTERP_INTERN
297 sys_intern_init();
298#endif
299
3a1ee7e8 300 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 301
3280af22
NIS
302 PL_fdpid = newAV(); /* for remembering popen pids by fd */
303 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 304 PL_errors = newSVpvs("");
76f68e9b
MHM
305 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
306 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
307 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 308#ifdef USE_ITHREADS
402d2eb1
NC
309 /* First entry is a list of empty elements. It needs to be initialised
310 else all hell breaks loose in S_find_uninit_var(). */
311 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 312 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 313#endif
e5dd39fc 314#ifdef USE_REENTRANT_API
59bd0823 315 Perl_reentrant_init(aTHX);
e5dd39fc 316#endif
3d47000e
AB
317
318 /* Note that strtab is a rather special HV. Assumptions are made
319 about not iterating on it, and not adding tie magic to it.
320 It is properly deallocated in perl_destruct() */
321 PL_strtab = newHV();
322
3d47000e
AB
323 HvSHAREKEYS_off(PL_strtab); /* mandatory */
324 hv_ksplit(PL_strtab, 512);
325
0631ea03
AB
326#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
327 _dyld_lookup_and_bind
328 ("__environ", (unsigned long *) &environ_pointer, NULL);
329#endif /* environ */
330
2f42fcb0
JH
331#ifndef PERL_MICRO
332# ifdef USE_ENVIRON_ARRAY
0631ea03 333 PL_origenviron = environ;
2f42fcb0 334# endif
0631ea03
AB
335#endif
336
5311654c 337 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 338 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
339 * BeOS has those, but returns the wrong value.
340 * The HZ if not originally defined has been by now
341 * been defined as CLK_TCK, if available. */
dbc1d986 342#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
343 PL_clocktick = sysconf(_SC_CLK_TCK);
344 if (PL_clocktick <= 0)
345#endif
346 PL_clocktick = HZ;
347
081fc587
AB
348 PL_stashcache = newHV();
349
e8e3635e 350 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 351 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 352
27da23d5
JH
353#ifdef HAS_MMAP
354 if (!PL_mmap_page_size) {
355#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
356 {
357 SETERRNO(0, SS_NORMAL);
358# ifdef _SC_PAGESIZE
359 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
360# else
361 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
362# endif
363 if ((long) PL_mmap_page_size < 0) {
364 if (errno) {
44f8325f 365 SV * const error = ERRSV;
d4c19fe8 366 SvUPGRADE(error, SVt_PV);
0510663f 367 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
368 }
369 else
370 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
371 }
372 }
373#else
374# ifdef HAS_GETPAGESIZE
375 PL_mmap_page_size = getpagesize();
376# else
377# if defined(I_SYS_PARAM) && defined(PAGESIZE)
378 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
379# endif
380# endif
381#endif
382 if (PL_mmap_page_size <= 0)
383 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
384 (IV) PL_mmap_page_size);
385 }
386#endif /* HAS_MMAP */
387
388#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
389 PL_timesbase.tms_utime = 0;
390 PL_timesbase.tms_stime = 0;
391 PL_timesbase.tms_cutime = 0;
392 PL_timesbase.tms_cstime = 0;
393#endif
394
7d113631
NC
395 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
396
a3e6e81e 397 PL_registered_mros = newHV();
9e169432
NC
398 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
399 HvMAX(PL_registered_mros) = 0;
a3e6e81e 400
8990e307 401 ENTER;
79072805
LW
402}
403
954c1994 404/*
62375a60
NIS
405=for apidoc nothreadhook
406
407Stub that provides thread hook for perl_destruct when there are
408no threads.
409
410=cut
411*/
412
413int
4e9e3734 414Perl_nothreadhook(pTHX)
62375a60 415{
96a5add6 416 PERL_UNUSED_CONTEXT;
62375a60
NIS
417 return 0;
418}
419
41e4abd8
NC
420#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
421void
422Perl_dump_sv_child(pTHX_ SV *sv)
423{
424 ssize_t got;
bf357333
NC
425 const int sock = PL_dumper_fd;
426 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
427 union control_un control;
428 struct msghdr msg;
808ad2d0 429 struct iovec vec[2];
bf357333 430 struct cmsghdr *cmptr;
808ad2d0
NC
431 int returned_errno;
432 unsigned char buffer[256];
41e4abd8 433
7918f24d
NC
434 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
435
bf357333 436 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
437 return;
438
439 PerlIO_flush(Perl_debug_log);
440
bf357333
NC
441 /* All these shenanigans are to pass a file descriptor over to our child for
442 it to dump out to. We can't let it hold open the file descriptor when it
443 forks, as the file descriptor it will dump to can turn out to be one end
444 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 445 be open, the wait would be forever.) */
bf357333
NC
446
447 msg.msg_control = control.control;
448 msg.msg_controllen = sizeof(control.control);
449 /* We're a connected socket so we don't need a destination */
450 msg.msg_name = NULL;
451 msg.msg_namelen = 0;
452 msg.msg_iov = vec;
808ad2d0 453 msg.msg_iovlen = 1;
bf357333
NC
454
455 cmptr = CMSG_FIRSTHDR(&msg);
456 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
457 cmptr->cmsg_level = SOL_SOCKET;
458 cmptr->cmsg_type = SCM_RIGHTS;
459 *((int *)CMSG_DATA(cmptr)) = 1;
460
461 vec[0].iov_base = (void*)&sv;
462 vec[0].iov_len = sizeof(sv);
463 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
464
465 if(got < 0) {
bf357333 466 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
467 abort();
468 }
bf357333
NC
469 if(got < sizeof(sv)) {
470 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
471 abort();
472 }
473
808ad2d0
NC
474 /* Return protocol is
475 int: errno value
476 unsigned char: length of location string (0 for empty)
477 unsigned char*: string (not terminated)
478 */
479 vec[0].iov_base = (void*)&returned_errno;
480 vec[0].iov_len = sizeof(returned_errno);
481 vec[1].iov_base = buffer;
482 vec[1].iov_len = 1;
483
484 got = readv(sock, vec, 2);
41e4abd8
NC
485
486 if(got < 0) {
487 perror("Debug leaking scalars parent read failed");
808ad2d0 488 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
489 abort();
490 }
808ad2d0 491 if(got < sizeof(returned_errno) + 1) {
41e4abd8 492 perror("Debug leaking scalars parent short read");
808ad2d0 493 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
494 abort();
495 }
496
808ad2d0
NC
497 if (*buffer) {
498 got = read(sock, buffer + 1, *buffer);
499 if(got < 0) {
500 perror("Debug leaking scalars parent read 2 failed");
501 PerlIO_flush(PerlIO_stderr());
502 abort();
503 }
504
505 if(got < *buffer) {
506 perror("Debug leaking scalars parent short read 2");
507 PerlIO_flush(PerlIO_stderr());
508 abort();
509 }
510 }
511
512 if (returned_errno || *buffer) {
513 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
514 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
515 returned_errno, strerror(returned_errno));
41e4abd8
NC
516 }
517}
518#endif
519
62375a60 520/*
954c1994
GS
521=for apidoc perl_destruct
522
523Shuts down a Perl interpreter. See L<perlembed>.
524
525=cut
526*/
527
31d77e54 528int
0cb96387 529perl_destruct(pTHXx)
79072805 530{
27da23d5 531 dVAR;
be2ea8ed 532 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 533 HV *hv;
2aa47728 534#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
535 pid_t child;
536#endif
8990e307 537
7918f24d
NC
538 PERL_ARGS_ASSERT_PERL_DESTRUCT;
539#ifndef MULTIPLICITY
ed6c66dd 540 PERL_UNUSED_ARG(my_perl);
7918f24d 541#endif
9d4ba2ae 542
3d22c4f0
GG
543 assert(PL_scopestack_ix == 1);
544
7766f137
GS
545 /* wait for all pseudo-forked children to finish */
546 PERL_WAIT_FOR_CHILDREN;
547
3280af22 548 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
549#ifdef DEBUGGING
550 {
9d4ba2ae
AL
551 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
552 if (s) {
e1ec3a88 553 const int i = atoi(s);
5f05dabc
PP
554 if (destruct_level < i)
555 destruct_level = i;
556 }
4633a7c4
LW
557 }
558#endif
559
27da23d5 560 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
561 dJMPENV;
562 int x = 0;
563
564 JMPENV_PUSH(x);
1b6737cc 565 PERL_UNUSED_VAR(x);
f3faeb53
AB
566 if (PL_endav && !PL_minus_c)
567 call_list(PL_scopestack_ix, PL_endav);
568 JMPENV_POP;
26f423df 569 }
f3faeb53 570 LEAVE;
a0d0e21e 571 FREETMPS;
3d22c4f0 572 assert(PL_scopestack_ix == 0);
a0d0e21e 573
e00b64d4 574 /* Need to flush since END blocks can produce output */
f13a2bc0 575 my_fflush_all();
e00b64d4 576
16c91539 577 if (PL_threadhook(aTHX)) {
62375a60 578 /* Threads hook has vetoed further cleanup */
c301d606 579 PL_veto_cleanup = TRUE;
37038d91 580 return STATUS_EXIT;
62375a60
NIS
581 }
582
2aa47728
NC
583#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
584 if (destruct_level != 0) {
585 /* Fork here to create a child. Our child's job is to preserve the
586 state of scalars prior to destruction, so that we can instruct it
587 to dump any scalars that we later find have leaked.
588 There's no subtlety in this code - it assumes POSIX, and it doesn't
589 fail gracefully */
590 int fd[2];
591
592 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
593 perror("Debug leaking scalars socketpair failed");
594 abort();
595 }
596
597 child = fork();
598 if(child == -1) {
599 perror("Debug leaking scalars fork failed");
600 abort();
601 }
602 if (!child) {
603 /* We are the child */
3125a5a4
NC
604 const int sock = fd[1];
605 const int debug_fd = PerlIO_fileno(Perl_debug_log);
606 int f;
808ad2d0
NC
607 const char *where;
608 /* Our success message is an integer 0, and a char 0 */
b61433a9 609 static const char success[sizeof(int) + 1] = {0};
3125a5a4 610
2aa47728 611 close(fd[0]);
2aa47728 612
3125a5a4
NC
613 /* We need to close all other file descriptors otherwise we end up
614 with interesting hangs, where the parent closes its end of a
615 pipe, and sits waiting for (another) child to terminate. Only
616 that child never terminates, because it never gets EOF, because
bf357333
NC
617 we also have the far end of the pipe open. We even need to
618 close the debugging fd, because sometimes it happens to be one
619 end of a pipe, and a process is waiting on the other end for
620 EOF. Normally it would be closed at some point earlier in
621 destruction, but if we happen to cause the pipe to remain open,
622 EOF never occurs, and we get an infinite hang. Hence all the
623 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
624
625 f = sysconf(_SC_OPEN_MAX);
626 if(f < 0) {
808ad2d0
NC
627 where = "sysconf failed";
628 goto abort;
3125a5a4
NC
629 }
630 while (f--) {
631 if (f == sock)
632 continue;
3125a5a4
NC
633 close(f);
634 }
635
2aa47728
NC
636 while (1) {
637 SV *target;
bf357333
NC
638 union control_un control;
639 struct msghdr msg;
640 struct iovec vec[1];
641 struct cmsghdr *cmptr;
642 ssize_t got;
643 int got_fd;
644
645 msg.msg_control = control.control;
646 msg.msg_controllen = sizeof(control.control);
647 /* We're a connected socket so we don't need a source */
648 msg.msg_name = NULL;
649 msg.msg_namelen = 0;
650 msg.msg_iov = vec;
651 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
652
653 vec[0].iov_base = (void*)&target;
654 vec[0].iov_len = sizeof(target);
655
656 got = recvmsg(sock, &msg, 0);
2aa47728
NC
657
658 if(got == 0)
659 break;
660 if(got < 0) {
808ad2d0
NC
661 where = "recv failed";
662 goto abort;
2aa47728
NC
663 }
664 if(got < sizeof(target)) {
808ad2d0
NC
665 where = "short recv";
666 goto abort;
2aa47728 667 }
bf357333 668
808ad2d0
NC
669 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
670 where = "no cmsg";
671 goto abort;
672 }
673 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
674 where = "wrong cmsg_len";
675 goto abort;
676 }
677 if(cmptr->cmsg_level != SOL_SOCKET) {
678 where = "wrong cmsg_level";
679 goto abort;
680 }
681 if(cmptr->cmsg_type != SCM_RIGHTS) {
682 where = "wrong cmsg_type";
683 goto abort;
684 }
bf357333
NC
685
686 got_fd = *(int*)CMSG_DATA(cmptr);
687 /* For our last little bit of trickery, put the file descriptor
688 back into Perl_debug_log, as if we never actually closed it
689 */
808ad2d0
NC
690 if(got_fd != debug_fd) {
691 if (dup2(got_fd, debug_fd) == -1) {
692 where = "dup2";
693 goto abort;
694 }
695 }
2aa47728 696 sv_dump(target);
bf357333 697
2aa47728
NC
698 PerlIO_flush(Perl_debug_log);
699
808ad2d0 700 got = write(sock, &success, sizeof(success));
2aa47728
NC
701
702 if(got < 0) {
808ad2d0
NC
703 where = "write failed";
704 goto abort;
2aa47728 705 }
808ad2d0
NC
706 if(got < sizeof(success)) {
707 where = "short write";
708 goto abort;
2aa47728
NC
709 }
710 }
711 _exit(0);
808ad2d0
NC
712 abort:
713 {
714 int send_errno = errno;
715 unsigned char length = (unsigned char) strlen(where);
716 struct iovec failure[3] = {
717 {(void*)&send_errno, sizeof(send_errno)},
718 {&length, 1},
719 {(void*)where, length}
720 };
721 int got = writev(sock, failure, 3);
722 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
723 in the parent if we try to read from the socketpair after the
724 child has exited, even if there was data to read.
725 So sleep a bit to give the parent a fighting chance of
726 reading the data. */
727 sleep(2);
728 _exit((got == -1) ? errno : 0);
729 }
bf357333 730 /* End of child. */
2aa47728 731 }
41e4abd8 732 PL_dumper_fd = fd[0];
2aa47728
NC
733 close(fd[1]);
734 }
735#endif
736
ff0cee69
PP
737 /* We must account for everything. */
738
739 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
740 /* Do this now, because destroying ops can cause new SVs to be generated
741 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
742 PL_curcop to point to a valid op from which the filename structure
743 member is copied. */
744 PL_curcop = &PL_compiling;
3280af22 745 if (PL_main_root) {
4e380990
DM
746 /* ensure comppad/curpad to refer to main's pad */
747 if (CvPADLIST(PL_main_cv)) {
748 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
749 }
3280af22 750 op_free(PL_main_root);
5f66b61c 751 PL_main_root = NULL;
a0d0e21e 752 }
5f66b61c 753 PL_main_start = NULL;
3280af22 754 SvREFCNT_dec(PL_main_cv);
601f1833 755 PL_main_cv = NULL;
24d3c518 756 PL_dirty = TRUE;
ff0cee69 757
13621cfb
NIS
758 /* Tell PerlIO we are about to tear things apart in case
759 we have layers which are using resources that should
760 be cleaned up now.
761 */
762
763 PerlIO_destruct(aTHX);
764
3280af22 765 if (PL_sv_objcount) {
a0d0e21e
LW
766 /*
767 * Try to destruct global references. We do this first so that the
768 * destructors and destructees still exist. Some sv's might remain.
769 * Non-referenced objects are on their own.
770 */
a0d0e21e 771 sv_clean_objs();
bf9cdc68 772 PL_sv_objcount = 0;
a0de6cf5 773 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 774 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
775 }
776
5cd24f17 777 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 778 SvREFCNT_dec(PL_warnhook);
a0714e2c 779 PL_warnhook = NULL;
3280af22 780 SvREFCNT_dec(PL_diehook);
a0714e2c 781 PL_diehook = NULL;
5cd24f17 782
4b556e6c 783 /* call exit list functions */
3280af22 784 while (PL_exitlistlen-- > 0)
acfe0abc 785 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 786
3280af22 787 Safefree(PL_exitlist);
4b556e6c 788
1c4916e5
CB
789 PL_exitlist = NULL;
790 PL_exitlistlen = 0;
791
a3e6e81e
NC
792 SvREFCNT_dec(PL_registered_mros);
793
551a8b83 794 /* jettison our possibly duplicated environment */
4b647fb0
DM
795 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
796 * so we certainly shouldn't free it here
797 */
2f42fcb0 798#ifndef PERL_MICRO
4b647fb0 799#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 800 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
801#ifdef USE_ITHREADS
802 /* only main thread can free environ[0] contents */
803 && PL_curinterp == aTHX
804#endif
805 )
806 {
551a8b83
JH
807 I32 i;
808
809 for (i = 0; environ[i]; i++)
4b420006 810 safesysfree(environ[i]);
0631ea03 811
4b420006
JH
812 /* Must use safesysfree() when working with environ. */
813 safesysfree(environ);
551a8b83
JH
814
815 environ = PL_origenviron;
816 }
817#endif
2f42fcb0 818#endif /* !PERL_MICRO */
551a8b83 819
30985c42
JH
820 if (destruct_level == 0) {
821
822 DEBUG_P(debprofdump());
823
824#if defined(PERLIO_LAYERS)
825 /* No more IO - including error messages ! */
826 PerlIO_cleanup(aTHX);
827#endif
828
829 CopFILE_free(&PL_compiling);
830 CopSTASH_free(&PL_compiling);
831
832 /* The exit() function will do everything that needs doing. */
833 return STATUS_EXIT;
834 }
835
804ffa60 836 /* reset so print() ends up where we expect */
a0714e2c 837 setdefout(NULL);
804ffa60 838
5f8cb046
DM
839#ifdef USE_ITHREADS
840 /* the syntax tree is shared between clones
841 * so op_free(PL_main_root) only ReREFCNT_dec's
842 * REGEXPs in the parent interpreter
843 * we need to manually ReREFCNT_dec for the clones
844 */
5f8cb046 845 SvREFCNT_dec(PL_regex_padav);
7d49f689 846 PL_regex_padav = NULL;
5f8cb046
DM
847 PL_regex_pad = NULL;
848#endif
849
ad64d0ec 850 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
851 PL_stashcache = NULL;
852
5f05dabc
PP
853 /* loosen bonds of global variables */
854
2f9285f8
DM
855 /* XXX can PL_parser still be non-null here? */
856 if(PL_parser && PL_parser->rsfp) {
857 (void)PerlIO_close(PL_parser->rsfp);
858 PL_parser->rsfp = NULL;
8ebc5c01
PP
859 }
860
84386e14
RGS
861 if (PL_minus_F) {
862 Safefree(PL_splitstr);
863 PL_splitstr = NULL;
864 }
865
8ebc5c01 866 /* switches */
3280af22
NIS
867 PL_minus_n = FALSE;
868 PL_minus_p = FALSE;
869 PL_minus_l = FALSE;
870 PL_minus_a = FALSE;
871 PL_minus_F = FALSE;
872 PL_doswitches = FALSE;
599cee73 873 PL_dowarn = G_WARN_OFF;
3280af22
NIS
874 PL_doextract = FALSE;
875 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
876 PL_unsafe = FALSE;
877
878 Safefree(PL_inplace);
bd61b366 879 PL_inplace = NULL;
a7cb1f99 880 SvREFCNT_dec(PL_patchlevel);
1e8125c6 881 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
882
883 if (PL_e_script) {
884 SvREFCNT_dec(PL_e_script);
a0714e2c 885 PL_e_script = NULL;
8ebc5c01
PP
886 }
887
bf9cdc68
RG
888 PL_perldb = 0;
889
8ebc5c01
PP
890 /* magical thingies */
891
e23d9e2f
CS
892 SvREFCNT_dec(PL_ofsgv); /* *, */
893 PL_ofsgv = NULL;
5f05dabc 894
7889fe52 895 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 896 PL_ors_sv = NULL;
8ebc5c01 897
3280af22 898 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 899 PL_rs = NULL;
dc92893f 900
d33b2eba 901 Safefree(PL_osname); /* $^O */
bd61b366 902 PL_osname = NULL;
5f05dabc 903
3280af22 904 SvREFCNT_dec(PL_statname);
a0714e2c
SS
905 PL_statname = NULL;
906 PL_statgv = NULL;
5f05dabc 907
8ebc5c01
PP
908 /* defgv, aka *_ should be taken care of elsewhere */
909
8ebc5c01 910 /* clean up after study() */
3280af22 911 SvREFCNT_dec(PL_lastscream);
a0714e2c 912 PL_lastscream = NULL;
3280af22
NIS
913 Safefree(PL_screamfirst);
914 PL_screamfirst = 0;
915 Safefree(PL_screamnext);
916 PL_screamnext = 0;
8ebc5c01 917
7d5ea4e7
GS
918 /* float buffer */
919 Safefree(PL_efloatbuf);
bd61b366 920 PL_efloatbuf = NULL;
7d5ea4e7
GS
921 PL_efloatsize = 0;
922
8ebc5c01 923 /* startup and shutdown function lists */
3280af22 924 SvREFCNT_dec(PL_beginav);
5a837c8f 925 SvREFCNT_dec(PL_beginav_save);
3280af22 926 SvREFCNT_dec(PL_endav);
7d30b5c4 927 SvREFCNT_dec(PL_checkav);
ece599bd 928 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
929 SvREFCNT_dec(PL_unitcheckav);
930 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 931 SvREFCNT_dec(PL_initav);
7d49f689
NC
932 PL_beginav = NULL;
933 PL_beginav_save = NULL;
934 PL_endav = NULL;
935 PL_checkav = NULL;
936 PL_checkav_save = NULL;
3c10abe3
AG
937 PL_unitcheckav = NULL;
938 PL_unitcheckav_save = NULL;
7d49f689 939 PL_initav = NULL;
5618dfe8 940
8ebc5c01 941 /* shortcuts just get cleared */
a0714e2c
SS
942 PL_envgv = NULL;
943 PL_incgv = NULL;
944 PL_hintgv = NULL;
945 PL_errgv = NULL;
946 PL_argvgv = NULL;
947 PL_argvoutgv = NULL;
948 PL_stdingv = NULL;
949 PL_stderrgv = NULL;
950 PL_last_in_gv = NULL;
951 PL_replgv = NULL;
952 PL_DBgv = NULL;
953 PL_DBline = NULL;
954 PL_DBsub = NULL;
955 PL_DBsingle = NULL;
956 PL_DBtrace = NULL;
957 PL_DBsignal = NULL;
601f1833 958 PL_DBcv = NULL;
7d49f689 959 PL_dbargs = NULL;
5c284bb0 960 PL_debstash = NULL;
8ebc5c01 961
7a1c5554 962 SvREFCNT_dec(PL_argvout_stack);
7d49f689 963 PL_argvout_stack = NULL;
8ebc5c01 964
5c831c24 965 SvREFCNT_dec(PL_modglobal);
5c284bb0 966 PL_modglobal = NULL;
5c831c24 967 SvREFCNT_dec(PL_preambleav);
7d49f689 968 PL_preambleav = NULL;
5c831c24 969 SvREFCNT_dec(PL_subname);
a0714e2c 970 PL_subname = NULL;
ca0c25f6 971#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 972 SvREFCNT_dec(PL_pidstatus);
5c284bb0 973 PL_pidstatus = NULL;
ca0c25f6 974#endif
5c831c24 975 SvREFCNT_dec(PL_toptarget);
a0714e2c 976 PL_toptarget = NULL;
5c831c24 977 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
978 PL_bodytarget = NULL;
979 PL_formtarget = NULL;
5c831c24 980
d33b2eba 981 /* free locale stuff */
b9582b6a 982#ifdef USE_LOCALE_COLLATE
d33b2eba 983 Safefree(PL_collation_name);
bd61b366 984 PL_collation_name = NULL;
b9582b6a 985#endif
d33b2eba 986
b9582b6a 987#ifdef USE_LOCALE_NUMERIC
d33b2eba 988 Safefree(PL_numeric_name);
bd61b366 989 PL_numeric_name = NULL;
a453c169 990 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 991 PL_numeric_radix_sv = NULL;
b9582b6a 992#endif
d33b2eba 993
5c831c24
GS
994 /* clear utf8 character classes */
995 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
996 SvREFCNT_dec(PL_utf8_ascii);
997 SvREFCNT_dec(PL_utf8_alpha);
998 SvREFCNT_dec(PL_utf8_space);
999 SvREFCNT_dec(PL_utf8_cntrl);
1000 SvREFCNT_dec(PL_utf8_graph);
1001 SvREFCNT_dec(PL_utf8_digit);
1002 SvREFCNT_dec(PL_utf8_upper);
1003 SvREFCNT_dec(PL_utf8_lower);
1004 SvREFCNT_dec(PL_utf8_print);
1005 SvREFCNT_dec(PL_utf8_punct);
1006 SvREFCNT_dec(PL_utf8_xdigit);
1007 SvREFCNT_dec(PL_utf8_mark);
1008 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1009 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1010 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1011 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1012 SvREFCNT_dec(PL_utf8_idstart);
1013 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c 1014 PL_utf8_alnum = NULL;
a0714e2c
SS
1015 PL_utf8_ascii = NULL;
1016 PL_utf8_alpha = NULL;
1017 PL_utf8_space = NULL;
1018 PL_utf8_cntrl = NULL;
1019 PL_utf8_graph = NULL;
1020 PL_utf8_digit = NULL;
1021 PL_utf8_upper = NULL;
1022 PL_utf8_lower = NULL;
1023 PL_utf8_print = NULL;
1024 PL_utf8_punct = NULL;
1025 PL_utf8_xdigit = NULL;
1026 PL_utf8_mark = NULL;
1027 PL_utf8_toupper = NULL;
1028 PL_utf8_totitle = NULL;
1029 PL_utf8_tolower = NULL;
1030 PL_utf8_tofold = NULL;
1031 PL_utf8_idstart = NULL;
1032 PL_utf8_idcont = NULL;
5c831c24 1033
971a9dd3 1034 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1035 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1036 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1037 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1038 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1039 CopFILE_free(&PL_compiling);
1040 CopSTASH_free(&PL_compiling);
5c831c24 1041
a0d0e21e 1042 /* Prepare to destruct main symbol table. */
5f05dabc 1043
3280af22 1044 hv = PL_defstash;
ca556bcd
DM
1045 /* break ref loop *:: <=> %:: */
1046 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1047 PL_defstash = 0;
a0d0e21e 1048 SvREFCNT_dec(hv);
5c831c24 1049 SvREFCNT_dec(PL_curstname);
a0714e2c 1050 PL_curstname = NULL;
a0d0e21e 1051
5a844595
GS
1052 /* clear queued errors */
1053 SvREFCNT_dec(PL_errors);
a0714e2c 1054 PL_errors = NULL;
5a844595 1055
dd69841b
BB
1056 SvREFCNT_dec(PL_isarev);
1057
a0d0e21e 1058 FREETMPS;
9b387841 1059 if (destruct_level >= 2) {
3280af22 1060 if (PL_scopestack_ix != 0)
9b387841
NC
1061 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1062 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1063 (long)PL_scopestack_ix);
3280af22 1064 if (PL_savestack_ix != 0)
9b387841
NC
1065 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1066 "Unbalanced saves: %ld more saves than restores\n",
1067 (long)PL_savestack_ix);
3280af22 1068 if (PL_tmps_floor != -1)
9b387841
NC
1069 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1070 (long)PL_tmps_floor + 1);
a0d0e21e 1071 if (cxstack_ix != -1)
9b387841
NC
1072 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1073 (long)cxstack_ix + 1);
a0d0e21e 1074 }
8990e307 1075
776df701 1076#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1077 /* the entries in this list are allocated via SV PVX's, so get freed
1078 * in sv_clean_all */
1079 Safefree(PL_my_cxt_list);
776df701 1080#endif
57bb2458 1081
8990e307 1082 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1083
1084 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1085 while (sv_clean_all() > 2)
5226ed68
JH
1086 ;
1087
d4777f27
GS
1088 AvREAL_off(PL_fdpid); /* no surviving entries */
1089 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1090 PL_fdpid = NULL;
d33b2eba 1091
6c644e78
GS
1092#ifdef HAVE_INTERP_INTERN
1093 sys_intern_clear();
1094#endif
1095
6e72f9df
PP
1096 /* Destruct the global string table. */
1097 {
1098 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1099 * so that sv_free() won't fail on them.
80459961
NC
1100 * Now that the global string table is using a single hunk of memory
1101 * for both HE and HEK, we either need to explicitly unshare it the
1102 * correct way, or actually free things here.
6e72f9df 1103 */
80459961
NC
1104 I32 riter = 0;
1105 const I32 max = HvMAX(PL_strtab);
c4420975 1106 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1107 HE *hent = array[0];
1108
6e72f9df 1109 for (;;) {
0453d815 1110 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1111 HE * const next = HeNEXT(hent);
9014280d 1112 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1113 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1114 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1115 Safefree(hent);
1116 hent = next;
6e72f9df
PP
1117 }
1118 if (!hent) {
1119 if (++riter > max)
1120 break;
1121 hent = array[riter];
1122 }
1123 }
80459961
NC
1124
1125 Safefree(array);
1126 HvARRAY(PL_strtab) = 0;
1127 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1128 }
3280af22 1129 SvREFCNT_dec(PL_strtab);
6e72f9df 1130
e652bb2f 1131#ifdef USE_ITHREADS
c21d1a0f 1132 /* free the pointer tables used for cloning */
a0739874 1133 ptr_table_free(PL_ptr_table);
bf9cdc68 1134 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1135#endif
a0739874 1136
d33b2eba
GS
1137 /* free special SVs */
1138
1139 SvREFCNT(&PL_sv_yes) = 0;
1140 sv_clear(&PL_sv_yes);
1141 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1142 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1143
1144 SvREFCNT(&PL_sv_no) = 0;
1145 sv_clear(&PL_sv_no);
1146 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1147 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1148
9f375a43
DM
1149 {
1150 int i;
1151 for (i=0; i<=2; i++) {
1152 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1153 sv_clear(PERL_DEBUG_PAD(i));
1154 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1155 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1156 }
1157 }
1158
0453d815 1159 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1160 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1161
eba0f806
DM
1162#ifdef DEBUG_LEAKING_SCALARS
1163 if (PL_sv_count != 0) {
1164 SV* sva;
1165 SV* sv;
1166 register SV* svend;
1167
ad64d0ec 1168 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1169 svend = &sva[SvREFCNT(sva)];
1170 for (sv = sva + 1; sv < svend; ++sv) {
1171 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1172 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1173 " flags=0x%"UVxf
fd0854ff 1174 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1175 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1176 "serial %"UVuf"\n",
574b8821
NC
1177 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1178 pTHX__VALUE,
fd0854ff
DM
1179 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1180 sv->sv_debug_line,
1181 sv->sv_debug_inpad ? "for" : "by",
1182 sv->sv_debug_optype ?
1183 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1184 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1185 sv->sv_debug_serial
fd0854ff 1186 );
2aa47728 1187#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1188 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1189#endif
eba0f806
DM
1190 }
1191 }
1192 }
1193 }
2aa47728
NC
1194#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1195 {
1196 int status;
1197 fd_set rset;
1198 /* Wait for up to 4 seconds for child to terminate.
1199 This seems to be the least effort way of timing out on reaping
1200 its exit status. */
1201 struct timeval waitfor = {4, 0};
41e4abd8 1202 int sock = PL_dumper_fd;
2aa47728
NC
1203
1204 shutdown(sock, 1);
1205 FD_ZERO(&rset);
1206 FD_SET(sock, &rset);
1207 select(sock + 1, &rset, NULL, NULL, &waitfor);
1208 waitpid(child, &status, WNOHANG);
1209 close(sock);
1210 }
1211#endif
eba0f806 1212#endif
77abb4c6
NC
1213#ifdef DEBUG_LEAKING_SCALARS_ABORT
1214 if (PL_sv_count)
1215 abort();
1216#endif
bf9cdc68 1217 PL_sv_count = 0;
eba0f806 1218
f1fac472
NC
1219#ifdef PERL_DEBUG_READONLY_OPS
1220 free(PL_slabs);
1221 PL_slabs = NULL;
1222 PL_slab_count = 0;
1223#endif
eba0f806 1224
56a2bab7 1225#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1226 /* No more IO - including error messages ! */
1227 PerlIO_cleanup(aTHX);
1228#endif
1229
9f4bd222 1230 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1231 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1232 for no arg - and will try and SvREFCNT_dec it.
1233 */
1234 SvREFCNT(&PL_sv_undef) = 0;
1235 SvREADONLY_off(&PL_sv_undef);
1236
3280af22 1237 Safefree(PL_origfilename);
bd61b366 1238 PL_origfilename = NULL;
3280af22 1239 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1240 PL_reg_start_tmp = (char**)NULL;
1241 PL_reg_start_tmpl = 0;
43c5f42d 1242 Safefree(PL_reg_curpm);
82ba1be6 1243 Safefree(PL_reg_poscache);
dd28f7bb 1244 free_tied_hv_pool();
3280af22 1245 Safefree(PL_op_mask);
cf36064f 1246 Safefree(PL_psig_name);
bf9cdc68 1247 PL_psig_name = (SV**)NULL;
d525a7b2 1248 PL_psig_ptr = (SV**)NULL;
ce08f86c 1249 Safefree(PL_psig_pend);
bf9cdc68 1250 PL_psig_pend = (int*)NULL;
31c91b43
LR
1251 {
1252 /* We need to NULL PL_psig_pend first, so that
1253 signal handlers know not to use it */
1254 int *psig_save = PL_psig_pend;
1255 PL_psig_pend = (int*)NULL;
1256 Safefree(psig_save);
1257 }
a0714e2c 1258 PL_formfeed = NULL;
6e72f9df 1259 nuke_stacks();
bf9cdc68
RG
1260 PL_tainting = FALSE;
1261 PL_taint_warn = FALSE;
3280af22 1262 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1263 PL_debug = 0;
ac27b0f5 1264
a0d0e21e 1265 DEBUG_P(debprofdump());
d33b2eba 1266
e5dd39fc 1267#ifdef USE_REENTRANT_API
10bc17b6 1268 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1269#endif
1270
612f20c3
GS
1271 sv_free_arenas();
1272
5d9a96ca
DM
1273 while (PL_regmatch_slab) {
1274 regmatch_slab *s = PL_regmatch_slab;
1275 PL_regmatch_slab = PL_regmatch_slab->next;
1276 Safefree(s);
1277 }
1278
fc36a67e
PP
1279 /* As the absolutely last thing, free the non-arena SV for mess() */
1280
3280af22 1281 if (PL_mess_sv) {
f350b448
NC
1282 /* we know that type == SVt_PVMG */
1283
9c63abab 1284 /* it could have accumulated taint magic */
f350b448
NC
1285 MAGIC* mg;
1286 MAGIC* moremagic;
1287 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1288 moremagic = mg->mg_moremagic;
1289 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1290 && mg->mg_len >= 0)
1291 Safefree(mg->mg_ptr);
1292 Safefree(mg);
9c63abab 1293 }
f350b448 1294
fc36a67e 1295 /* we know that type >= SVt_PV */
8bd4d4c5 1296 SvPV_free(PL_mess_sv);
3280af22
NIS
1297 Safefree(SvANY(PL_mess_sv));
1298 Safefree(PL_mess_sv);
a0714e2c 1299 PL_mess_sv = NULL;
fc36a67e 1300 }
37038d91 1301 return STATUS_EXIT;
79072805
LW
1302}
1303
954c1994
GS
1304/*
1305=for apidoc perl_free
1306
1307Releases a Perl interpreter. See L<perlembed>.
1308
1309=cut
1310*/
1311
79072805 1312void
0cb96387 1313perl_free(pTHXx)
79072805 1314{
5174512c
NC
1315 dVAR;
1316
7918f24d
NC
1317 PERL_ARGS_ASSERT_PERL_FREE;
1318
c301d606
DM
1319 if (PL_veto_cleanup)
1320 return;
1321
7cb608b5 1322#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1323 {
1324 /*
1325 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1326 * value as we're probably hunting memory leaks then
1327 */
1328 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1329 if (!s || atoi(s) == 0) {
4fd0a9b8 1330 const U32 old_debug = PL_debug;
55ef9aae
MHM
1331 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1332 thread at thread exit. */
4fd0a9b8
NC
1333 if (DEBUG_m_TEST) {
1334 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1335 "free this thread's memory\n");
1336 PL_debug &= ~ DEBUG_m_FLAG;
1337 }
55ef9aae
MHM
1338 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1339 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1340 PL_debug = old_debug;
55ef9aae
MHM
1341 }
1342 }
7cb608b5
NC
1343#endif
1344
acfe0abc 1345#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1346# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1347 {
acfe0abc 1348# ifdef NETWARE
7af12a34 1349 void *host = nw_internal_host;
acfe0abc 1350# else
7af12a34 1351 void *host = w32_internal_host;
acfe0abc 1352# endif
7af12a34 1353 PerlMem_free(aTHXx);
acfe0abc 1354# ifdef NETWARE
7af12a34 1355 nw_delete_internal_host(host);
acfe0abc 1356# else
7af12a34 1357 win32_delete_internal_host(host);
acfe0abc 1358# endif
7af12a34 1359 }
1c0ca838
GS
1360# else
1361 PerlMem_free(aTHXx);
1362# endif
acfe0abc
GS
1363#else
1364 PerlMem_free(aTHXx);
76e3520e 1365#endif
79072805
LW
1366}
1367
b7f7fff6 1368#if defined(USE_ITHREADS)
aebd1ac7
GA
1369/* provide destructors to clean up the thread key when libperl is unloaded */
1370#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1371
826955bd 1372#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1373#pragma fini "perl_fini"
666ad1ec
GA
1374#elif defined(__sun) && !defined(__GNUC__)
1375#pragma fini (perl_fini)
aebd1ac7
GA
1376#endif
1377
0dbb1585
AL
1378static void
1379#if defined(__GNUC__)
1380__attribute__((destructor))
aebd1ac7 1381#endif
de009b76 1382perl_fini(void)
aebd1ac7 1383{
27da23d5 1384 dVAR;
c301d606 1385 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1386 FREE_THREAD_KEY;
1387}
1388
1389#endif /* WIN32 */
1390#endif /* THREADS */
1391
4b556e6c 1392void
864dbfa3 1393Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1394{
97aff369 1395 dVAR;
3280af22
NIS
1396 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1397 PL_exitlist[PL_exitlistlen].fn = fn;
1398 PL_exitlist[PL_exitlistlen].ptr = ptr;
1399 ++PL_exitlistlen;
4b556e6c
JD
1400}
1401
56cf6df8
RGS
1402#ifdef HAS_PROCSELFEXE
1403/* This is a function so that we don't hold on to MAXPATHLEN
1404 bytes of stack longer than necessary
1405 */
1406STATIC void
e1ec3a88 1407S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1408{
1409 char buf[MAXPATHLEN];
1410 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1411
1412 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1413 includes a spurious NUL which will cause $^X to fail in system
1414 or backticks (this will prevent extensions from being built and
1415 many tests from working). readlink is not meant to add a NUL.
1416 Normal readlink works fine.
1417 */
1418 if (len > 0 && buf[len-1] == '\0') {
1419 len--;
1420 }
1421
1422 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1423 returning the text "unknown" from the readlink rather than the path
1424 to the executable (or returning an error from the readlink). Any valid
1425 path has a '/' in it somewhere, so use that to validate the result.
1426 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1427 */
1428 if (len > 0 && memchr(buf, '/', len)) {
1429 sv_setpvn(sv,buf,len);
1430 }
1431 else {
1432 sv_setpv(sv,arg0);
1433 }
1434}
1435#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1436
1437STATIC void
1438S_set_caret_X(pTHX) {
97aff369 1439 dVAR;
fafc274c 1440 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1441 if (tmpgv) {
1442#ifdef HAS_PROCSELFEXE
1443 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1444#else
1445#ifdef OS2
c69033f2 1446 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1447#else
c69033f2 1448 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1449#endif
1450#endif
1451 }
1452}
1453
954c1994
GS
1454/*
1455=for apidoc perl_parse
1456
1457Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1458
1459=cut
1460*/
1461
79072805 1462int
0cb96387 1463perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1464{
27da23d5 1465 dVAR;
6224f72b 1466 I32 oldscope;
6224f72b 1467 int ret;
db36c5a1 1468 dJMPENV;
8d063cd8 1469
7918f24d
NC
1470 PERL_ARGS_ASSERT_PERL_PARSE;
1471#ifndef MULTIPLICITY
ed6c66dd 1472 PERL_UNUSED_ARG(my_perl);
7918f24d 1473#endif
9d4ba2ae 1474
b0891165
JH
1475#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1476 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1477 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1478 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1479 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1480 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1481 if (!PL_rehash_seed_set)
1482 PL_rehash_seed = get_hash_seed();
b0891165 1483 {
9d4ba2ae 1484 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1485
1b6737cc
AL
1486 if (s && (atoi(s) == 1))
1487 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1488 }
1489#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1490
3280af22 1491 PL_origargc = argc;
e2975953 1492 PL_origargv = argv;
a0d0e21e 1493
a2722ac9
GA
1494 if (PL_origalen != 0) {
1495 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1496 }
1497 else {
3cb9023d
JH
1498 /* Set PL_origalen be the sum of the contiguous argv[]
1499 * elements plus the size of the env in case that it is
e9137a8e 1500 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1501 * as the maximum modifiable length of $0. In the worst case
1502 * the area we are able to modify is limited to the size of
43c32782 1503 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1504 * --jhi */
e1ec3a88 1505 const char *s = NULL;
54bfe034 1506 int i;
1b6737cc 1507 const UV mask =
7d8e7db3 1508 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1509 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1510 const UV aligned =
43c32782
JH
1511 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1512
1513 /* See if all the arguments are contiguous in memory. Note
1514 * that 'contiguous' is a loose term because some platforms
1515 * align the argv[] and the envp[]. If the arguments look
1516 * like non-aligned, assume that they are 'strictly' or
1517 * 'traditionally' contiguous. If the arguments look like
1518 * aligned, we just check that they are within aligned
1519 * PTRSIZE bytes. As long as no system has something bizarre
1520 * like the argv[] interleaved with some other data, we are
1521 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1522 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1523 while (*s) s++;
1524 for (i = 1; i < PL_origargc; i++) {
1525 if ((PL_origargv[i] == s + 1
43c32782 1526#ifdef OS2
c8941eeb 1527 || PL_origargv[i] == s + 2
43c32782 1528#endif
c8941eeb
JH
1529 )
1530 ||
1531 (aligned &&
1532 (PL_origargv[i] > s &&
1533 PL_origargv[i] <=
1534 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1535 )
1536 {
1537 s = PL_origargv[i];
1538 while (*s) s++;
1539 }
1540 else
1541 break;
54bfe034 1542 }
54bfe034 1543 }
a4a109c2
JD
1544
1545#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1546 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1547 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1548 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1549 ||
1550 (aligned &&
1551 (PL_origenviron[0] > s &&
1552 PL_origenviron[0] <=
1553 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1554 )
1555 {
9d419b5f 1556#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1557 s = PL_origenviron[0];
1558 while (*s) s++;
1559#endif
bd61b366 1560 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1561 /* Force copy of environment. */
1562 for (i = 1; PL_origenviron[i]; i++) {
1563 if (PL_origenviron[i] == s + 1
1564 ||
1565 (aligned &&
1566 (PL_origenviron[i] > s &&
1567 PL_origenviron[i] <=
1568 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1569 )
1570 {
1571 s = PL_origenviron[i];
1572 while (*s) s++;
1573 }
1574 else
1575 break;
54bfe034 1576 }
43c32782 1577 }
54bfe034 1578 }
a4a109c2
JD
1579#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1580
2d2af554 1581 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1582 }
1583
3280af22 1584 if (PL_do_undump) {
a0d0e21e
LW
1585
1586 /* Come here if running an undumped a.out. */
1587
3280af22
NIS
1588 PL_origfilename = savepv(argv[0]);
1589 PL_do_undump = FALSE;
a0d0e21e 1590 cxstack_ix = -1; /* start label stack again */
748a9306 1591 init_ids();
b7975bdd
NC
1592 assert (!PL_tainted);
1593 TAINT;
1594 S_set_caret_X(aTHX);
1595 TAINT_NOT;
a0d0e21e
LW
1596 init_postdump_symbols(argc,argv,env);
1597 return 0;
1598 }
1599
3280af22 1600 if (PL_main_root) {
3280af22 1601 op_free(PL_main_root);
5f66b61c 1602 PL_main_root = NULL;
ff0cee69 1603 }
5f66b61c 1604 PL_main_start = NULL;
3280af22 1605 SvREFCNT_dec(PL_main_cv);
601f1833 1606 PL_main_cv = NULL;
79072805 1607
3280af22
NIS
1608 time(&PL_basetime);
1609 oldscope = PL_scopestack_ix;
599cee73 1610 PL_dowarn = G_WARN_OFF;
f86702cc 1611
14dd3ad8 1612 JMPENV_PUSH(ret);
6224f72b 1613 switch (ret) {
312caa8e 1614 case 0:
14dd3ad8 1615 parse_body(env,xsinit);
3c10abe3
AG
1616 if (PL_unitcheckav)
1617 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1618 if (PL_checkav)
1619 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1620 ret = 0;
1621 break;
6224f72b
GS
1622 case 1:
1623 STATUS_ALL_FAILURE;
1624 /* FALL THROUGH */
1625 case 2:
1626 /* my_exit() was called */
3280af22 1627 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1628 LEAVE;
1629 FREETMPS;
3280af22 1630 PL_curstash = PL_defstash;
3c10abe3
AG
1631 if (PL_unitcheckav)
1632 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1633 if (PL_checkav)
1634 call_list(oldscope, PL_checkav);
37038d91 1635 ret = STATUS_EXIT;
14dd3ad8 1636 break;
6224f72b 1637 case 3:
bf49b057 1638 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1639 ret = 1;
1640 break;
6224f72b 1641 }
14dd3ad8
GS
1642 JMPENV_POP;
1643 return ret;
1644}
1645
4a5df386
NC
1646/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1647 miniperl, and we need to see those flags reflected in the values here. */
1648
1649/* What this returns is subject to change. Use the public interface in Config.
1650 */
1651static void
1652S_Internals_V(pTHX_ CV *cv)
1653{
1654 dXSARGS;
1655#ifdef LOCAL_PATCH_COUNT
1656 const int local_patch_count = LOCAL_PATCH_COUNT;
1657#else
1658 const int local_patch_count = 0;
1659#endif
2dc296d2 1660 const int entries = 3 + local_patch_count;
4a5df386
NC
1661 int i;
1662 static char non_bincompat_options[] =
1663# ifdef DEBUGGING
1664 " DEBUGGING"
1665# endif
1666# ifdef NO_MATHOMS
0d311fbe 1667 " NO_MATHOMS"
4a5df386
NC
1668# endif
1669# ifdef PERL_DISABLE_PMC
1670 " PERL_DISABLE_PMC"
1671# endif
1672# ifdef PERL_DONT_CREATE_GVSV
1673 " PERL_DONT_CREATE_GVSV"
1674# endif
9a044a43
NC
1675# ifdef PERL_EXTERNAL_GLOB
1676 " PERL_EXTERNAL_GLOB"
1677# endif
4a5df386
NC
1678# ifdef PERL_IS_MINIPERL
1679 " PERL_IS_MINIPERL"
1680# endif
1681# ifdef PERL_MALLOC_WRAP
1682 " PERL_MALLOC_WRAP"
1683# endif
1684# ifdef PERL_MEM_LOG
1685 " PERL_MEM_LOG"
1686# endif
1687# ifdef PERL_MEM_LOG_NOIMPL
1688 " PERL_MEM_LOG_NOIMPL"
1689# endif
1690# ifdef PERL_USE_DEVEL
1691 " PERL_USE_DEVEL"
1692# endif
1693# ifdef PERL_USE_SAFE_PUTENV
1694 " PERL_USE_SAFE_PUTENV"
1695# endif
de618ee4
NC
1696# ifdef USE_ATTRIBUTES_FOR_PERLIO
1697 " USE_ATTRIBUTES_FOR_PERLIO"
1698# endif
4a5df386
NC
1699# ifdef USE_FAST_STDIO
1700 " USE_FAST_STDIO"
1701# endif
5a8d8935
NC
1702# ifdef USE_PERL_ATOF
1703 " USE_PERL_ATOF"
1704# endif
0d311fbe
NC
1705# ifdef USE_SITECUSTOMIZE
1706 " USE_SITECUSTOMIZE"
1707# endif
4a5df386
NC
1708 ;
1709 PERL_UNUSED_ARG(cv);
1710 PERL_UNUSED_ARG(items);
1711
1712 EXTEND(SP, entries);
1713
1714 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1715 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1716 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1717
1718#ifdef __DATE__
1719# ifdef __TIME__
1720 PUSHs(Perl_newSVpvn_flags(aTHX_
1721 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1722 SVs_TEMP));
1723# else
1724 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1725 SVs_TEMP));
1726# endif
1727#else
1728 PUSHs(&PL_sv_undef);
1729#endif
1730
4a5df386
NC
1731 for (i = 1; i <= local_patch_count; i++) {
1732 /* This will be an undef, if PL_localpatches[i] is NULL. */
1733 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1734 }
1735
1736 XSRETURN(entries);
1737}
1738
be71fc8f
NC
1739#define INCPUSH_UNSHIFT 0x01
1740#define INCPUSH_ADD_OLD_VERS 0x02
1741#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1742#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1743#define INCPUSH_NOT_BASEDIR 0x10
1744#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1745#define INCPUSH_ADD_SUB_DIRS \
1746 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1747
312caa8e 1748STATIC void *
14dd3ad8 1749S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1750{
27da23d5 1751 dVAR;
2f9285f8 1752 PerlIO *rsfp;
312caa8e 1753 int argc = PL_origargc;
8f42b153 1754 char **argv = PL_origargv;
e1ec3a88 1755 const char *scriptname = NULL;
312caa8e 1756 VOL bool dosearch = FALSE;
c7030b81 1757 register char c;
bd61b366 1758 const char *cddir = NULL;
ab019eaa 1759#ifdef USE_SITECUSTOMIZE
20ef40cf 1760 bool minus_f = FALSE;
ab019eaa 1761#endif
009d90df 1762 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1763 bool add_read_e_script = FALSE;
009d90df
DM
1764
1765 SvGROW(linestr_sv, 80);
76f68e9b 1766 sv_setpvs(linestr_sv,"");
312caa8e 1767
6224f72b 1768 init_main_stash();
54310121 1769
c7030b81
NC
1770 {
1771 const char *s;
6224f72b
GS
1772 for (argc--,argv++; argc > 0; argc--,argv++) {
1773 if (argv[0][0] != '-' || !argv[0][1])
1774 break;
6224f72b
GS
1775 s = argv[0]+1;
1776 reswitch:
47f56822 1777 switch ((c = *s)) {
729a02f2 1778 case 'C':
1d5472a9
GS
1779#ifndef PERL_STRICT_CR
1780 case '\r':
1781#endif
6224f72b
GS
1782 case ' ':
1783 case '0':
1784 case 'F':
1785 case 'a':
1786 case 'c':
1787 case 'd':
1788 case 'D':
1789 case 'h':
1790 case 'i':
1791 case 'l':
1792 case 'M':
1793 case 'm':
1794 case 'n':
1795 case 'p':
1796 case 's':
1797 case 'u':
1798 case 'U':
1799 case 'v':
599cee73
PM
1800 case 'W':
1801 case 'X':
6224f72b 1802 case 'w':
97bd5664 1803 if ((s = moreswitches(s)))
6224f72b
GS
1804 goto reswitch;
1805 break;
33b78306 1806
1dbad523 1807 case 't':
22f7c9c9 1808 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1809 if( !PL_tainting ) {
1810 PL_taint_warn = TRUE;
1811 PL_tainting = TRUE;
1812 }
1813 s++;
1814 goto reswitch;
6224f72b 1815 case 'T':
22f7c9c9 1816 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1817 PL_tainting = TRUE;
317ea90d 1818 PL_taint_warn = FALSE;
6224f72b
GS
1819 s++;
1820 goto reswitch;
f86702cc 1821
bc9b29db
RH
1822 case 'E':
1823 PL_minus_E = TRUE;
1824 /* FALL THROUGH */
6224f72b 1825 case 'e':
f20b2998 1826 forbid_setid('e', FALSE);
3280af22 1827 if (!PL_e_script) {
396482e1 1828 PL_e_script = newSVpvs("");
5486870f 1829 add_read_e_script = TRUE;
6224f72b
GS
1830 }
1831 if (*++s)
3280af22 1832 sv_catpv(PL_e_script, s);
6224f72b 1833 else if (argv[1]) {
3280af22 1834 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1835 argc--,argv++;
1836 }
1837 else
47f56822 1838 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1839 sv_catpvs(PL_e_script, "\n");
6224f72b 1840 break;
afe37c7d 1841
20ef40cf 1842 case 'f':
f5542d3a 1843#ifdef USE_SITECUSTOMIZE
20ef40cf 1844 minus_f = TRUE;
f5542d3a 1845#endif
20ef40cf
GA
1846 s++;
1847 goto reswitch;
1848
6224f72b 1849 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1850 forbid_setid('I', FALSE);
bd61b366 1851 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1852 argc--,argv++;
1853 }
6224f72b 1854 if (s && *s) {
0df16ed7 1855 STRLEN len = strlen(s);
55b4bc1c 1856 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1857 }
1858 else
a67e862a 1859 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1860 break;
6224f72b 1861 case 'S':
f20b2998 1862 forbid_setid('S', FALSE);
6224f72b
GS
1863 dosearch = TRUE;
1864 s++;
1865 goto reswitch;
1866 case 'V':
7edfd0ef
NC
1867 {
1868 SV *opts_prog;
1869
7edfd0ef 1870 if (*++s != ':') {
37ca4a5b 1871 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1872 }
1873 else {
1874 ++s;
1875 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1876 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1877 0, s, 0);
1878 s += strlen(s);
1879 }
37ca4a5b 1880 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1881 /* don't look for script or read stdin */
1882 scriptname = BIT_BUCKET;
1883 goto reswitch;
6224f72b 1884 }
6224f72b 1885 case 'x':
3280af22 1886 PL_doextract = TRUE;
6224f72b 1887 s++;
304334da 1888 if (*s)
f4c556ac 1889 cddir = s;
6224f72b
GS
1890 break;
1891 case 0:
1892 break;
1893 case '-':
1894 if (!*++s || isSPACE(*s)) {
1895 argc--,argv++;
1896 goto switch_end;
1897 }
1898 /* catch use of gnu style long options */
1899 if (strEQ(s, "version")) {
dd374669 1900 s = (char *)"v";
6224f72b
GS
1901 goto reswitch;
1902 }
1903 if (strEQ(s, "help")) {
dd374669 1904 s = (char *)"h";
6224f72b
GS
1905 goto reswitch;
1906 }
1907 s--;
1908 /* FALL THROUGH */
1909 default:
cea2e8a9 1910 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1911 }
1912 }
c7030b81
NC
1913 }
1914
6224f72b 1915 switch_end:
54310121 1916
c7030b81
NC
1917 {
1918 char *s;
1919
f675dbe5
CB
1920 if (
1921#ifndef SECURE_INTERNAL_GETENV
1922 !PL_tainting &&
1923#endif
cf756827 1924 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1925 {
74288ac8
GS
1926 while (isSPACE(*s))
1927 s++;
317ea90d 1928 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1929 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1930 PL_tainting = TRUE;
317ea90d
MS
1931 PL_taint_warn = FALSE;
1932 }
74288ac8 1933 else {
bd61b366 1934 char *popt_copy = NULL;
74288ac8 1935 while (s && *s) {
54913509 1936 const char *d;
74288ac8
GS
1937 while (isSPACE(*s))
1938 s++;
1939 if (*s == '-') {
1940 s++;
1941 if (isSPACE(*s))
1942 continue;
1943 }
4ea8f8fb 1944 d = s;
74288ac8
GS
1945 if (!*s)
1946 break;
2b622f1a 1947 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1948 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1949 while (++s && *s) {
1950 if (isSPACE(*s)) {
cf756827 1951 if (!popt_copy) {
bfa6c418
NC
1952 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1953 s = popt_copy + (s - d);
1954 d = popt_copy;
cf756827 1955 }
4ea8f8fb
MS
1956 *s++ = '\0';
1957 break;
1958 }
1959 }
1c4db469 1960 if (*d == 't') {
317ea90d
MS
1961 if( !PL_tainting ) {
1962 PL_taint_warn = TRUE;
1963 PL_tainting = TRUE;
1964 }
1c4db469 1965 } else {
97bd5664 1966 moreswitches(d);
1c4db469 1967 }
6224f72b 1968 }
6224f72b
GS
1969 }
1970 }
c7030b81 1971 }
a0d0e21e 1972
87e06404 1973#if defined(USE_SITECUSTOMIZE) && !defined(PERL_IS_MINIPERL)
20ef40cf 1974 if (!minus_f) {
404ad9dc
NC
1975 /* SITELIB_EXP is a function call on Win32.
1976 The games with local $! are to avoid setting errno if there is no
1977 sitecustomize script. */
1978 const char *const sitelib = SITELIB_EXP;
29a861e7 1979 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1980 Perl_newSVpvf(aTHX_
1981 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
20ef40cf
GA
1982 }
1983#endif
1984
6224f72b
GS
1985 if (!scriptname)
1986 scriptname = argv[0];
3280af22 1987 if (PL_e_script) {
6224f72b
GS
1988 argc++,argv--;
1989 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1990 }
bd61b366 1991 else if (scriptname == NULL) {
6224f72b
GS
1992#ifdef MSDOS
1993 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1994 moreswitches("h");
6224f72b
GS
1995#endif
1996 scriptname = "-";
1997 }
1998
b7975bdd
NC
1999 /* Set $^X early so that it can be used for relocatable paths in @INC */
2000 assert (!PL_tainted);
2001 TAINT;
2002 S_set_caret_X(aTHX);
2003 TAINT_NOT;
2cace6ac 2004 init_perllib();
6224f72b 2005
a52eba0e 2006 {
f20b2998 2007 bool suidscript = FALSE;
829372d3 2008
cc69b689 2009 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2010
2f9285f8 2011 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2012 linestr_sv, rsfp);
6224f72b 2013
64ca3a65 2014#ifndef PERL_MICRO
a52eba0e
NC
2015# if defined(SIGCHLD) || defined(SIGCLD)
2016 {
2017# ifndef SIGCHLD
2018# define SIGCHLD SIGCLD
2019# endif
2020 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2021 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2022 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2023 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2024 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2025 }
0b5b802d 2026 }
a52eba0e 2027# endif
64ca3a65 2028#endif
0b5b802d 2029
e37778c2 2030 if (PL_doextract) {
faef540c 2031
f20b2998 2032 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2033 setuid scripts. */
2034 forbid_setid('x', suidscript);
f20b2998 2035 /* Hence you can't get here if suidscript is true */
faef540c 2036
2f9285f8 2037 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2038 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2039 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2040 }
f4c556ac 2041 }
6224f72b 2042
ea726b52 2043 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2044 CvUNIQUE_on(PL_compcv);
2045
dd2155a4 2046 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2047
dd69841b
BB
2048 PL_isarev = newHV();
2049
0c4f7ff0 2050 boot_core_PerlIO();
6224f72b 2051 boot_core_UNIVERSAL();
e1a479c5 2052 boot_core_mro();
4a5df386 2053 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2054
2055 if (xsinit)
acfe0abc 2056 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2057#ifndef PERL_MICRO
d0d72822 2058#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2059 init_os_extras();
6224f72b 2060#endif
64ca3a65 2061#endif
6224f72b 2062
29209bc5 2063#ifdef USE_SOCKS
1b9c9cf5
DH
2064# ifdef HAS_SOCKS5_INIT
2065 socks5_init(argv[0]);
2066# else
29209bc5 2067 SOCKSinit(argv[0]);
1b9c9cf5 2068# endif
ac27b0f5 2069#endif
29209bc5 2070
6224f72b
GS
2071 init_predump_symbols();
2072 /* init_postdump_symbols not currently designed to be called */
2073 /* more than once (ENV isn't cleared first, for example) */
2074 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2075 if (!PL_do_undump)
6224f72b
GS
2076 init_postdump_symbols(argc,argv,env);
2077
27da23d5
JH
2078 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2079 * or explicitly in some platforms.
085a54d9 2080 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2081 * look like the user wants to use UTF-8. */
a0fd4948 2082#if defined(__SYMBIAN32__)
27da23d5
JH
2083 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2084#endif
e27b5b51 2085# ifndef PERL_IS_MINIPERL
06e66572
JH
2086 if (PL_unicode) {
2087 /* Requires init_predump_symbols(). */
a05d7ebb 2088 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2089 IO* io;
2090 PerlIO* fp;
2091 SV* sv;
2092
a05d7ebb 2093 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2094 * and the default open disciplines. */
a05d7ebb
JH
2095 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2096 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2097 (fp = IoIFP(io)))
2098 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2099 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2100 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2101 (fp = IoOFP(io)))
2102 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2103 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2104 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2105 (fp = IoOFP(io)))
2106 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2107 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2108 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2109 SVt_PV)))) {
a05d7ebb
JH
2110 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2111 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2112 if (in) {
2113 if (out)
76f68e9b 2114 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2115 else
76f68e9b 2116 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2117 }
2118 else if (out)
76f68e9b 2119 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2120 SvSETMAGIC(sv);
2121 }
b310b053
JH
2122 }
2123 }
e27b5b51 2124#endif
b310b053 2125
c7030b81
NC
2126 {
2127 const char *s;
4ffa73a3
JH
2128 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2129 if (strEQ(s, "unsafe"))
2130 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2131 else if (strEQ(s, "safe"))
2132 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2133 else
2134 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2135 }
c7030b81 2136 }
4ffa73a3 2137
81d86705 2138#ifdef PERL_MAD
c7030b81
NC
2139 {
2140 const char *s;
81d86705
NC
2141 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2142 PL_madskills = 1;
2143 PL_minus_c = 1;
2144 if (!s || !s[0])
2145 PL_xmlfp = PerlIO_stdout();
2146 else {
2147 PL_xmlfp = PerlIO_open(s, "w");
2148 if (!PL_xmlfp)
2149 Perl_croak(aTHX_ "Can't open %s", s);
2150 }
1a9a51d4 2151 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2152 }
c7030b81
NC
2153 }
2154
2155 {
2156 const char *s;
81d86705
NC
2157 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2158 PL_madskills = atoi(s);
1a9a51d4 2159 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2160 }
c7030b81 2161 }
81d86705
NC
2162#endif
2163
5486870f 2164 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2165 PL_subname = newSVpvs("main");
6224f72b 2166
5486870f
DM
2167 if (add_read_e_script)
2168 filter_add(read_e_script, NULL);
2169
6224f72b
GS
2170 /* now parse the script */
2171
93189314 2172 SETERRNO(0,SS_NORMAL);
28ac2b49 2173 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2174 if (PL_minus_c)
cea2e8a9 2175 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2176 else {
cea2e8a9 2177 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2178 PL_origfilename);
6224f72b
GS
2179 }
2180 }
57843af0 2181 CopLINE_set(PL_curcop, 0);
3280af22 2182 PL_curstash = PL_defstash;
3280af22
NIS
2183 if (PL_e_script) {
2184 SvREFCNT_dec(PL_e_script);
a0714e2c 2185 PL_e_script = NULL;
6224f72b
GS
2186 }
2187
3280af22 2188 if (PL_do_undump)
6224f72b
GS
2189 my_unexec();
2190
57843af0
GS
2191 if (isWARN_ONCE) {
2192 SAVECOPFILE(PL_curcop);
2193 SAVECOPLINE(PL_curcop);
3280af22 2194 gv_check(PL_defstash);
57843af0 2195 }
6224f72b
GS
2196
2197 LEAVE;
2198 FREETMPS;
2199
2200#ifdef MYMALLOC
f6a607bc
RGS
2201 {
2202 const char *s;
6224f72b
GS
2203 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2204 dump_mstats("after compilation:");
f6a607bc 2205 }
6224f72b
GS
2206#endif
2207
2208 ENTER;
febb3a6d 2209 PL_restartjmpenv = NULL;
3280af22 2210 PL_restartop = 0;
312caa8e 2211 return NULL;
6224f72b
GS
2212}
2213
954c1994
GS
2214/*
2215=for apidoc perl_run
2216
2217Tells a Perl interpreter to run. See L<perlembed>.
2218
2219=cut
2220*/
2221
6224f72b 2222int
0cb96387 2223perl_run(pTHXx)
6224f72b 2224{
97aff369 2225 dVAR;
6224f72b 2226 I32 oldscope;
14dd3ad8 2227 int ret = 0;
db36c5a1 2228 dJMPENV;
6224f72b 2229
7918f24d
NC
2230 PERL_ARGS_ASSERT_PERL_RUN;
2231#ifndef MULTIPLICITY
ed6c66dd 2232 PERL_UNUSED_ARG(my_perl);
7918f24d 2233#endif
9d4ba2ae 2234
3280af22 2235 oldscope = PL_scopestack_ix;
96e176bf
CL
2236#ifdef VMS
2237 VMSISH_HUSHED = 0;
2238#endif
6224f72b 2239
14dd3ad8 2240 JMPENV_PUSH(ret);
6224f72b
GS
2241 switch (ret) {
2242 case 1:
2243 cxstack_ix = -1; /* start context stack again */
312caa8e 2244 goto redo_body;
14dd3ad8 2245 case 0: /* normal completion */
14dd3ad8
GS
2246 redo_body:
2247 run_body(oldscope);
14dd3ad8
GS
2248 /* FALL THROUGH */
2249 case 2: /* my_exit() */
3280af22 2250 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2251 LEAVE;
2252 FREETMPS;
3280af22 2253 PL_curstash = PL_defstash;
3a1ee7e8 2254 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2255 PL_endav && !PL_minus_c)
2256 call_list(oldscope, PL_endav);
6224f72b
GS
2257#ifdef MYMALLOC
2258 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2259 dump_mstats("after execution: ");
2260#endif
37038d91 2261 ret = STATUS_EXIT;
14dd3ad8 2262 break;
6224f72b 2263 case 3:
312caa8e
CS
2264 if (PL_restartop) {
2265 POPSTACK_TO(PL_mainstack);
2266 goto redo_body;
6224f72b 2267 }
bf49b057 2268 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2269 FREETMPS;
14dd3ad8
GS
2270 ret = 1;
2271 break;
6224f72b
GS
2272 }
2273
14dd3ad8
GS
2274 JMPENV_POP;
2275 return ret;
312caa8e
CS
2276}
2277
dd374669 2278STATIC void
14dd3ad8
GS
2279S_run_body(pTHX_ I32 oldscope)
2280{
97aff369 2281 dVAR;
6224f72b 2282 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2283 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2284
3280af22 2285 if (!PL_restartop) {
81d86705
NC
2286#ifdef PERL_MAD
2287 if (PL_xmlfp) {
2288 xmldump_all();
2289 exit(0); /* less likely to core dump than my_exit(0) */
2290 }
2291#endif
cf2782cd 2292#ifdef DEBUGGING
f0e3f042
CS
2293 if (DEBUG_x_TEST || DEBUG_B_TEST)
2294 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2295 if (!DEBUG_q_TEST)
2296 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2297#endif
6224f72b 2298
3280af22 2299 if (PL_minus_c) {
bf49b057 2300 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2301 my_exit(0);
2302 }
3280af22 2303 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2304 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2305 if (PL_initav)
2306 call_list(oldscope, PL_initav);
f1fac472
NC
2307#ifdef PERL_DEBUG_READONLY_OPS
2308 Perl_pending_Slabs_to_ro(aTHX);
2309#endif
6224f72b
GS
2310 }
2311
2312 /* do it */
2313
3280af22 2314 if (PL_restartop) {
febb3a6d 2315 PL_restartjmpenv = NULL;
533c011a 2316 PL_op = PL_restartop;
3280af22 2317 PL_restartop = 0;
cea2e8a9 2318 CALLRUNOPS(aTHX);
6224f72b 2319 }
3280af22
NIS
2320 else if (PL_main_start) {
2321 CvDEPTH(PL_main_cv) = 1;
533c011a 2322 PL_op = PL_main_start;
cea2e8a9 2323 CALLRUNOPS(aTHX);
6224f72b 2324 }
f6b3007c
JH
2325 my_exit(0);
2326 /* NOTREACHED */
6224f72b
GS
2327}
2328
954c1994 2329/*
ccfc67b7
JH
2330=head1 SV Manipulation Functions
2331
954c1994
GS
2332=for apidoc p||get_sv
2333
64ace3f8
NC
2334Returns the SV of the specified Perl scalar. C<flags> are passed to
2335C<gv_fetchpv>. If C<GV_ADD> is set and the
2336Perl variable does not exist then it will be created. If C<flags> is zero
2337and the variable does not exist then NULL is returned.
954c1994
GS
2338
2339=cut
2340*/
2341
6224f72b 2342SV*
64ace3f8 2343Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2344{
2345 GV *gv;
7918f24d
NC
2346
2347 PERL_ARGS_ASSERT_GET_SV;
2348
64ace3f8 2349 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2350 if (gv)
2351 return GvSV(gv);
a0714e2c 2352 return NULL;
6224f72b
GS
2353}
2354
954c1994 2355/*
ccfc67b7
JH
2356=head1 Array Manipulation Functions
2357
954c1994
GS
2358=for apidoc p||get_av
2359
cbfd0a87
NC
2360Returns the AV of the specified Perl array. C<flags> are passed to
2361C<gv_fetchpv>. If C<GV_ADD> is set and the
2362Perl variable does not exist then it will be created. If C<flags> is zero
2363and the variable does not exist then NULL is returned.
954c1994
GS
2364
2365=cut
2366*/
2367
6224f72b 2368AV*
cbfd0a87 2369Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2370{
cbfd0a87 2371 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2372
2373 PERL_ARGS_ASSERT_GET_AV;
2374
cbfd0a87 2375 if (flags)
6224f72b
GS
2376 return GvAVn(gv);
2377 if (gv)
2378 return GvAV(gv);
7d49f689 2379 return NULL;
6224f72b
GS
2380}
2381
954c1994 2382/*
ccfc67b7
JH
2383=head1 Hash Manipulation Functions
2384
954c1994
GS
2385=for apidoc p||get_hv
2386
6673a63c
NC
2387Returns the HV of the specified Perl hash. C<flags> are passed to
2388C<gv_fetchpv>. If C<GV_ADD> is set and the
2389Perl variable does not exist then it will be created. If C<flags> is zero
2390and the variable does not exist then NULL is returned.
954c1994
GS
2391
2392=cut
2393*/
2394
6224f72b 2395HV*
6673a63c 2396Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2397{
6673a63c 2398 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2399
2400 PERL_ARGS_ASSERT_GET_HV;
2401
6673a63c 2402 if (flags)
a0d0e21e
LW
2403 return GvHVn(gv);
2404 if (gv)
2405 return GvHV(gv);
5c284bb0 2406 return NULL;
a0d0e21e
LW
2407}
2408
954c1994 2409/*
ccfc67b7
JH
2410=head1 CV Manipulation Functions
2411
780a5241
NC
2412=for apidoc p||get_cvn_flags
2413
2414Returns the CV of the specified Perl subroutine. C<flags> are passed to
2415C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2416exist then it will be declared (which has the same effect as saying
2417C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2418then NULL is returned.
2419
954c1994
GS
2420=for apidoc p||get_cv
2421
780a5241 2422Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2423
2424=cut
2425*/
2426
a0d0e21e 2427CV*
780a5241 2428Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2429{
780a5241 2430 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2431 /* XXX this is probably not what they think they're getting.
2432 * It has the same effect as "sub name;", i.e. just a forward
2433 * declaration! */
7918f24d
NC
2434
2435 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2436
780a5241 2437 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2438 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2439 return newSUB(start_subparse(FALSE, 0),
780a5241 2440 newSVOP(OP_CONST, 0, sv),
5f66b61c 2441 NULL, NULL);
780a5241 2442 }
a0d0e21e 2443 if (gv)
8ebc5c01 2444 return GvCVu(gv);
601f1833 2445 return NULL;
a0d0e21e
LW
2446}
2447
2c67934f
NC
2448/* Nothing in core calls this now, but we can't replace it with a macro and
2449 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2450CV*
2451Perl_get_cv(pTHX_ const char *name, I32 flags)
2452{
7918f24d
NC
2453 PERL_ARGS_ASSERT_GET_CV;
2454
780a5241
NC
2455 return get_cvn_flags(name, strlen(name), flags);
2456}
2457
79072805
LW
2458/* Be sure to refetch the stack pointer after calling these routines. */
2459
954c1994 2460/*
ccfc67b7
JH
2461
2462=head1 Callback Functions
2463
954c1994
GS
2464=for apidoc p||call_argv
2465
2466Performs a callback to the specified Perl sub. See L<perlcall>.
2467
2468=cut
2469*/
2470
a0d0e21e 2471I32
8f42b153 2472Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2473
8ac85365
NIS
2474 /* See G_* flags in cop.h */
2475 /* null terminated arg list */
8990e307 2476{
97aff369 2477 dVAR;
a0d0e21e 2478 dSP;
8990e307 2479
7918f24d
NC
2480 PERL_ARGS_ASSERT_CALL_ARGV;
2481
924508f0 2482 PUSHMARK(SP);
a0d0e21e 2483 if (argv) {
8990e307 2484 while (*argv) {
6e449a3a 2485 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2486 argv++;
2487 }
a0d0e21e 2488 PUTBACK;
8990e307 2489 }
864dbfa3 2490 return call_pv(sub_name, flags);
8990e307
LW
2491}
2492
954c1994
GS
2493/*
2494=for apidoc p||call_pv
2495
2496Performs a callback to the specified Perl sub. See L<perlcall>.
2497
2498=cut
2499*/
2500
a0d0e21e 2501I32
864dbfa3 2502Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2503 /* name of the subroutine */
2504 /* See G_* flags in cop.h */
a0d0e21e 2505{
7918f24d
NC
2506 PERL_ARGS_ASSERT_CALL_PV;
2507
0da0e728 2508 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2509}
2510
954c1994
GS
2511/*
2512=for apidoc p||call_method
2513
2514Performs a callback to the specified Perl method. The blessed object must
2515be on the stack. See L<perlcall>.
2516
2517=cut
2518*/
2519
a0d0e21e 2520I32
864dbfa3 2521Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2522 /* name of the subroutine */
2523 /* See G_* flags in cop.h */
a0d0e21e 2524{
46ca9bac 2525 STRLEN len;
7918f24d
NC
2526 PERL_ARGS_ASSERT_CALL_METHOD;
2527
46ca9bac 2528 len = strlen(methname);
2529
2530 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2531 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2532}
2533
2534/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2535/*
2536=for apidoc p||call_sv
2537
2538Performs a callback to the Perl sub whose name is in the SV. See
2539L<perlcall>.
2540
2541=cut
2542*/
2543
a0d0e21e 2544I32
001d637e 2545Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2546 /* See G_* flags in cop.h */
a0d0e21e 2547{
27da23d5 2548 dVAR; dSP;
a0d0e21e 2549 LOGOP myop; /* fake syntax tree node */
968b3946 2550 UNOP method_op;
aa689395 2551 I32 oldmark;
8ea43dc8 2552 VOL I32 retval = 0;
a0d0e21e 2553 I32 oldscope;
54310121 2554 bool oldcatch = CATCH_GET;
6224f72b 2555 int ret;
c4420975 2556 OP* const oldop = PL_op;
db36c5a1 2557 dJMPENV;
1e422769 2558
7918f24d
NC
2559 PERL_ARGS_ASSERT_CALL_SV;
2560
a0d0e21e
LW
2561 if (flags & G_DISCARD) {
2562 ENTER;
2563 SAVETMPS;
2564 }
2f8edad0
NC
2565 if (!(flags & G_WANT)) {
2566 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2567 */
2568 flags |= G_SCALAR;
2569 }
a0d0e21e 2570
aa689395 2571 Zero(&myop, 1, LOGOP);
5f66b61c 2572 myop.op_next = NULL;
f51d4af5 2573 if (!(flags & G_NOARGS))
aa689395 2574 myop.op_flags |= OPf_STACKED;
4f911530 2575 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2576 SAVEOP();
533c011a 2577 PL_op = (OP*)&myop;
aa689395 2578
3280af22
NIS
2579 EXTEND(PL_stack_sp, 1);
2580 *++PL_stack_sp = sv;
aa689395 2581 oldmark = TOPMARK;
3280af22 2582 oldscope = PL_scopestack_ix;
a0d0e21e 2583
3280af22 2584 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2585 /* Handle first BEGIN of -d. */
3280af22 2586 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2587 /* Try harder, since this may have been a sighandler, thus
2588 * curstash may be meaningless. */
ea726b52 2589 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2590 && !(flags & G_NODEBUG))
533c011a 2591 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2592
968b3946
GS
2593 if (flags & G_METHOD) {
2594 Zero(&method_op, 1, UNOP);
2595 method_op.op_next = PL_op;
2596 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2597 method_op.op_type = OP_METHOD;
968b3946 2598 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2599 myop.op_type = OP_ENTERSUB;
f39d0b86 2600 PL_op = (OP*)&method_op;
968b3946
GS
2601 }
2602
312caa8e 2603 if (!(flags & G_EVAL)) {
0cdb2077 2604 CATCH_SET(TRUE);
d6f07c05 2605 CALL_BODY_SUB((OP*)&myop);
312caa8e 2606 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2607 CATCH_SET(oldcatch);
312caa8e
CS
2608 }
2609 else {
d78bda3d 2610 myop.op_other = (OP*)&myop;
3280af22 2611 PL_markstack_ptr--;
edb2152a 2612 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2613 PL_markstack_ptr++;
a0d0e21e 2614
14dd3ad8 2615 JMPENV_PUSH(ret);
edb2152a 2616
6224f72b
GS
2617 switch (ret) {
2618 case 0:
14dd3ad8 2619 redo_body:
d6f07c05 2620 CALL_BODY_SUB((OP*)&myop);
312caa8e 2621 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2622 if (!(flags & G_KEEPERR)) {
ab69dbc2 2623 CLEAR_ERRSV();
8433848b 2624 }
a0d0e21e 2625 break;
6224f72b 2626 case 1:
f86702cc 2627 STATUS_ALL_FAILURE;
a0d0e21e 2628 /* FALL THROUGH */
6224f72b 2629 case 2:
a0d0e21e 2630 /* my_exit() was called */
3280af22 2631 PL_curstash = PL_defstash;
a0d0e21e 2632 FREETMPS;
14dd3ad8 2633 JMPENV_POP;
f86702cc 2634 my_exit_jump();
a0d0e21e 2635 /* NOTREACHED */
6224f72b 2636 case 3:
3280af22 2637 if (PL_restartop) {
febb3a6d 2638 PL_restartjmpenv = NULL;
533c011a 2639 PL_op = PL_restartop;
3280af22 2640 PL_restartop = 0;
312caa8e 2641 goto redo_body;
a0d0e21e 2642 }
3280af22 2643 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2644 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2645 retval = 0;
2646 else {
2647 retval = 1;
3280af22 2648 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2649 }
312caa8e 2650 break;
a0d0e21e 2651 }
a0d0e21e 2652
edb2152a
NC
2653 if (PL_scopestack_ix > oldscope)
2654 delete_eval_scope();
14dd3ad8 2655 JMPENV_POP;
a0d0e21e 2656 }
1e422769 2657
a0d0e21e 2658 if (flags & G_DISCARD) {
3280af22 2659 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2660 retval = 0;
2661 FREETMPS;
2662 LEAVE;
2663 }
533c011a 2664 PL_op = oldop;
a0d0e21e
LW
2665 return retval;
2666}
2667
6e72f9df 2668/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2669
954c1994
GS
2670/*
2671=for apidoc p||eval_sv
2672
2673Tells Perl to C<eval> the string in the SV.
2674
2675=cut
2676*/
2677
a0d0e21e 2678I32
864dbfa3 2679Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2680
8ac85365 2681 /* See G_* flags in cop.h */
a0d0e21e 2682{
97aff369 2683 dVAR;
924508f0 2684 dSP;
a0d0e21e 2685 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2686 VOL I32 oldmark = SP - PL_stack_base;
2687 VOL I32 retval = 0;
6224f72b 2688 int ret;
c4420975 2689 OP* const oldop = PL_op;
db36c5a1 2690 dJMPENV;
84902520 2691
7918f24d
NC
2692 PERL_ARGS_ASSERT_EVAL_SV;
2693
4633a7c4
LW
2694 if (flags & G_DISCARD) {
2695 ENTER;
2696 SAVETMPS;
2697 }
2698
462e5cf6 2699 SAVEOP();
533c011a
NIS
2700 PL_op = (OP*)&myop;
2701 Zero(PL_op, 1, UNOP);
3280af22
NIS
2702 EXTEND(PL_stack_sp, 1);
2703 *++PL_stack_sp = sv;
79072805 2704
4633a7c4
LW
2705 if (!(flags & G_NOARGS))
2706 myop.op_flags = OPf_STACKED;
5f66b61c 2707 myop.op_next = NULL;
6e72f9df 2708 myop.op_type = OP_ENTEREVAL;
4f911530 2709 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2710 if (flags & G_KEEPERR)
2711 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2712
dedbcade
DM
2713 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2714 * before a PUSHEVAL, which corrupts the stack after a croak */
2715 TAINT_PROPER("eval_sv()");
2716
14dd3ad8 2717 JMPENV_PUSH(ret);
6224f72b
GS
2718 switch (ret) {
2719 case 0:
14dd3ad8 2720 redo_body:
d6f07c05 2721 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2722 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2723 if (!(flags & G_KEEPERR)) {
ab69dbc2 2724 CLEAR_ERRSV();
8433848b 2725 }
4633a7c4 2726 break;
6224f72b 2727 case 1:
f86702cc 2728 STATUS_ALL_FAILURE;
4633a7c4 2729 /* FALL THROUGH */
6224f72b 2730 case 2:
4633a7c4 2731 /* my_exit() was called */
3280af22 2732 PL_curstash = PL_defstash;
4633a7c4 2733 FREETMPS;
14dd3ad8 2734 JMPENV_POP;
f86702cc 2735 my_exit_jump();
4633a7c4 2736 /* NOTREACHED */
6224f72b 2737 case 3:
3280af22 2738 if (PL_restartop) {
febb3a6d 2739 PL_restartjmpenv = NULL;
533c011a 2740 PL_op = PL_restartop;
3280af22 2741 PL_restartop = 0;
312caa8e 2742 goto redo_body;
4633a7c4 2743 }
3280af22 2744 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2745 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2746 retval = 0;
2747 else {
2748 retval = 1;
3280af22 2749 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2750 }
312caa8e 2751 break;
4633a7c4
LW
2752 }
2753
14dd3ad8 2754 JMPENV_POP;
4633a7c4 2755 if (flags & G_DISCARD) {
3280af22 2756 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2757 retval = 0;
2758 FREETMPS;
2759 LEAVE;
2760 }
533c011a 2761 PL_op = oldop;
4633a7c4
LW
2762 return retval;
2763}
2764
954c1994
GS
2765/*
2766=for apidoc p||eval_pv
2767
2768Tells Perl to C<eval> the given string and return an SV* result.
2769
2770=cut
2771*/
2772
137443ea 2773SV*
864dbfa3 2774Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2775{
97aff369 2776 dVAR;
137443ea
PP
2777 dSP;
2778 SV* sv = newSVpv(p, 0);
2779
7918f24d
NC
2780 PERL_ARGS_ASSERT_EVAL_PV;
2781
864dbfa3 2782 eval_sv(sv, G_SCALAR);
137443ea
PP
2783 SvREFCNT_dec(sv);
2784
2785 SPAGAIN;
2786 sv = POPs;
2787 PUTBACK;
2788
2d8e6c8d 2789 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2790 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2791 }
137443ea
PP
2792
2793 return sv;
2794}
2795
4633a7c4
LW
2796/* Require a module. */
2797
954c1994 2798/*
ccfc67b7
JH
2799=head1 Embedding Functions
2800
954c1994
GS
2801=for apidoc p||require_pv
2802
7d3fb230
BS
2803Tells Perl to C<require> the file named by the string argument. It is
2804analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2805implemented that way; consider using load_module instead.
954c1994 2806
7d3fb230 2807=cut */
954c1994 2808
4633a7c4 2809void
864dbfa3 2810Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2811{
97aff369 2812 dVAR;
d3acc0f7 2813 dSP;
97aff369 2814 SV* sv;
7918f24d
NC
2815
2816 PERL_ARGS_ASSERT_REQUIRE_PV;
2817
e788e7d3 2818 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2819 PUTBACK;
be41e5d9
NC
2820 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2821 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2822 SPAGAIN;
2823 POPSTACK;
79072805
LW
2824}
2825
76e3520e 2826STATIC void
e1ec3a88 2827S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2828{
ab821d7f 2829 /* This message really ought to be max 23 lines.
75c72d73 2830 * Removed -h because the user already knows that option. Others? */
fb73857a 2831
1566c39d
NC
2832 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2833 minimum of 509 character string literals. */
27da23d5 2834 static const char * const usage_msg[] = {
1566c39d
NC
2835" -0[octal] specify record separator (\\0, if no argument)\n"
2836" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2837" -C[number/list] enables the listed Unicode features\n"
2838" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2839" -d[:debugger] run program under debugger\n"
2840" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2841" -e program one line of program (several -e's allowed, omit programfile)\n"
2842" -E program like -e, but enables all optional features\n"
2843" -f don't do $sitelib/sitecustomize.pl at startup\n"
2844" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2845" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2846" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2847" -l[octal] enable line ending processing, specifies line terminator\n"
2848" -[mM][-]module execute \"use/no module...\" before executing program\n"
2849" -n assume \"while (<>) { ... }\" loop around program\n"
2850" -p assume loop like -n but print line also, like sed\n"
2851" -s enable rudimentary parsing for switches after programfile\n"
2852" -S look for programfile using PATH environment variable\n",
2853" -t enable tainting warnings\n"
2854" -T enable tainting checks\n"
2855" -u dump core after parsing program\n"
2856" -U allow unsafe operations\n"
2857" -v print version, patchlevel and license\n"
2858" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2859" -w enable many useful warnings\n"
1566c39d
NC
2860" -W enable all warnings\n"
2861" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2862" -X disable all warnings\n"
2863" \n"
2864"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2865NULL
2866};
27da23d5 2867 const char * const *p = usage_msg;
1566c39d 2868 PerlIO *out = PerlIO_stdout();
fb73857a 2869
7918f24d
NC
2870 PERL_ARGS_ASSERT_USAGE;
2871
1566c39d
NC
2872 PerlIO_printf(out,
2873 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2874 name);
fb73857a 2875 while (*p)
1566c39d 2876 PerlIO_puts(out, *p++);
4633a7c4
LW
2877}
2878
b4ab917c
DM
2879/* convert a string of -D options (or digits) into an int.
2880 * sets *s to point to the char after the options */
2881
2882#ifdef DEBUGGING
2883int
e1ec3a88 2884Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2885{
27da23d5 2886 static const char * const usage_msgd[] = {
651b8f1a
NC
2887 " Debugging flag values: (see also -d)\n"
2888 " p Tokenizing and parsing (with v, displays parse stack)\n"
2889 " s Stack snapshots (with v, displays all stacks)\n"
2890 " l Context (loop) stack processing\n"
2891 " t Trace execution\n"
2892 " o Method and overloading resolution\n",
2893 " c String/numeric conversions\n"
2894 " P Print profiling info, source file input state\n"
2895 " m Memory and SV allocation\n"
2896 " f Format processing\n"
2897 " r Regular expression parsing and execution\n"
2898 " x Syntax tree dump\n",
2899 " u Tainting checks\n"
2900 " H Hash dump -- usurps values()\n"
2901 " X Scratchpad allocation\n"
2902 " D Cleaning up\n"
2903 " T Tokenising\n"
2904 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2905 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2906 " v Verbose: use in conjunction with other flags\n"
2907 " C Copy On Write\n"
2908 " A Consistency checks on internal structures\n"
2909 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2910 " M trace smart match resolution\n"
2911 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2912 NULL
2913 };
b4ab917c 2914 int i = 0;
7918f24d
NC
2915
2916 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2917
b4ab917c
DM
2918 if (isALPHA(**s)) {
2919 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2920 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2921
2922 for (; isALNUM(**s); (*s)++) {
c4420975 2923 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2924 if (d)
2925 i |= 1 << (d - debopts);
2926 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2927 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2928 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2929 }
2930 }
e6e64d9b 2931 else if (isDIGIT(**s)) {
b4ab917c
DM
2932 i = atoi(*s);
2933 for (; isALNUM(**s); (*s)++) ;
2934 }
ddcf8bc1 2935 else if (givehelp) {
06e869a4 2936 const char *const *p = usage_msgd;
651b8f1a 2937 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 2938 }
b4ab917c
DM
2939# ifdef EBCDIC
2940 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2941 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2942 "-Dp not implemented on this platform\n");
2943# endif
2944 return i;
2945}
2946#endif
2947
79072805
LW
2948/* This routine handles any switches that can be given during run */
2949
c7030b81
NC
2950const char *
2951Perl_moreswitches(pTHX_ const char *s)
79072805 2952{
27da23d5 2953 dVAR;
84c133a0 2954 UV rschar;
0544e6df 2955 const char option = *s; /* used to remember option in -m/-M code */
79072805 2956
7918f24d
NC
2957 PERL_ARGS_ASSERT_MORESWITCHES;
2958
79072805
LW
2959 switch (*s) {
2960 case '0':
a863c7d1 2961 {
f2095865 2962 I32 flags = 0;
a3b680e6 2963 STRLEN numlen;
f2095865
JH
2964
2965 SvREFCNT_dec(PL_rs);
2966 if (s[1] == 'x' && s[2]) {
a3b680e6 2967 const char *e = s+=2;
f2095865
JH
2968 U8 *tmps;
2969
a3b680e6
AL
2970 while (*e)
2971 e++;
f2095865
JH
2972 numlen = e - s;
2973 flags = PERL_SCAN_SILENT_ILLDIGIT;
2974 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2975 if (s + numlen < e) {
2976 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2977 numlen = 0;
2978 s--;
2979 }
396482e1 2980 PL_rs = newSVpvs("");
c5661c80 2981 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2982 tmps = (U8*)SvPVX(PL_rs);
2983 uvchr_to_utf8(tmps, rschar);
2984 SvCUR_set(PL_rs, UNISKIP(rschar));
2985 SvUTF8_on(PL_rs);
2986 }
2987 else {
2988 numlen = 4;
2989 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2990 if (rschar & ~((U8)~0))
2991 PL_rs = &PL_sv_undef;
2992 else if (!rschar && numlen >= 2)
396482e1 2993 PL_rs = newSVpvs("");
f2095865
JH
2994 else {
2995 char ch = (char)rschar;
2996 PL_rs = newSVpvn(&ch, 1);
2997 }
2998 }
64ace3f8 2999 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3000 return s + numlen;
a863c7d1 3001 }
46487f74 3002 case 'C':
a05d7ebb 3003 s++;
dd374669 3004 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3005 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3006 PL_utf8cache = -1;
46487f74 3007 return s;
2304df62 3008 case 'F':
3280af22 3009 PL_minus_F = TRUE;
ebce5377
RGS
3010 PL_splitstr = ++s;
3011 while (*s && !isSPACE(*s)) ++s;
e49e380e 3012 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3013 return s;
79072805 3014 case 'a':
3280af22 3015 PL_minus_a = TRUE;
79072805
LW
3016 s++;
3017 return s;
3018 case 'c':
3280af22 3019 PL_minus_c = TRUE;
79072805
LW
3020 s++;
3021 return s;
3022 case 'd':
f20b2998 3023 forbid_setid('d', FALSE);
4633a7c4 3024 s++;
2cbb2ee1
RGS
3025
3026 /* -dt indicates to the debugger that threads will be used */
3027 if (*s == 't' && !isALNUM(s[1])) {
3028 ++s;
3029 my_setenv("PERL5DB_THREADED", "1");
3030 }
3031
70c94a19
RR
3032 /* The following permits -d:Mod to accepts arguments following an =
3033 in the fashion that -MSome::Mod does. */
3034 if (*s == ':' || *s == '=') {
f85893a1
NC
3035 const char *start = ++s;
3036 const char *const end = s + strlen(s);
396482e1 3037 SV * const sv = newSVpvs("use Devel::");
f85893a1 3038
70c94a19
RR
3039 /* We now allow -d:Module=Foo,Bar */
3040 while(isALNUM(*s) || *s==':') ++s;
3041 if (*s != '=')
f85893a1 3042 sv_catpvn(sv, start, end - start);
70c94a19
RR
3043 else {
3044 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3045 /* Don't use NUL as q// delimiter here, this string goes in the
3046 * environment. */
3047 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3048 }
f85893a1 3049 s = end;
184f32ec 3050 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3051 SvREFCNT_dec(sv);
4633a7c4 3052 }
ed094faf 3053 if (!PL_perldb) {
3280af22 3054 PL_perldb = PERLDB_ALL;
a0d0e21e 3055 init_debugger();
ed094faf 3056 }
79072805
LW
3057 return s;
3058 case 'D':
0453d815 3059 {
79072805 3060#ifdef DEBUGGING
f20b2998 3061 forbid_setid('D', FALSE);
b4ab917c 3062 s++;
dd374669 3063 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3064#else /* !DEBUGGING */
0453d815 3065 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3066 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3067 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3068 for (s++; isALNUM(*s); s++) ;
79072805 3069#endif
79072805 3070 return s;
0453d815 3071 }
4633a7c4 3072 case 'h':
ac27b0f5 3073 usage(PL_origargv[0]);
7ca617d0 3074 my_exit(0);
79072805 3075 case 'i':
43c5f42d 3076 Safefree(PL_inplace);
c030f24b
GH
3077#if defined(__CYGWIN__) /* do backup extension automagically */
3078 if (*(s+1) == '\0') {
c86a4f2e 3079 PL_inplace = savepvs(".bak");
c030f24b
GH
3080 return s+1;
3081 }
3082#endif /* __CYGWIN__ */
5ef5d758 3083 {
d4c19fe8 3084 const char * const start = ++s;
5ef5d758
NC
3085 while (*s && !isSPACE(*s))
3086 ++s;
3087
3088 PL_inplace = savepvn(start, s - start);
3089 }
7b8d334a 3090 if (*s) {
5ef5d758 3091 ++s;
7b8d334a 3092 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3093 s++;
7b8d334a 3094 }
fb73857a 3095 return s;
4e49a025 3096 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3097 forbid_setid('I', FALSE);
fb73857a
PP
3098 ++s;
3099 while (*s && isSPACE(*s))
3100 ++s;
3101 if (*s) {
c7030b81 3102 const char *e, *p;
0df16ed7
GS
3103 p = s;
3104 /* ignore trailing spaces (possibly followed by other switches) */
3105 do {
3106 for (e = p; *e && !isSPACE(*e); e++) ;
3107 p = e;
3108 while (isSPACE(*p))
3109 p++;
3110 } while (*p && *p != '-');
55b4bc1c 3111 incpush(s, e-s,
e28f3139 3112 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3113 s = p;
3114 if (*s == '-')
3115 s++;
79072805
LW
3116 }
3117 else
a67e862a 3118 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3119 return s;
79072805 3120 case 'l':
3280af22 3121 PL_minus_l = TRUE;
79072805 3122 s++;
7889fe52
NIS
3123 if (PL_ors_sv) {
3124 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3125 PL_ors_sv = NULL;
7889fe52 3126 }
79072805 3127 if (isDIGIT(*s)) {
53305cf1 3128 I32 flags = 0;
a3b680e6 3129 STRLEN numlen;
396482e1 3130 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3131 numlen = 3 + (*s == '0');
3132 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3133 s += numlen;
3134 }
3135 else {
8bfdd7d9 3136 if (RsPARA(PL_rs)) {
396482e1 3137 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3138 }
3139 else {
8bfdd7d9 3140 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3141 }
79072805
LW
3142 }
3143 return s;
1a30305b 3144 case 'M':
f20b2998 3145 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3146 /* FALL THROUGH */
3147 case 'm':
f20b2998 3148 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3149 if (*++s) {
c7030b81 3150 const char *start;
b64cb68c 3151 const char *end;
11343788 3152 SV *sv;
e1ec3a88 3153 const char *use = "use ";
0544e6df 3154 bool colon = FALSE;
a5f75d66 3155 /* -M-foo == 'no foo' */
d0043bd1
NC
3156 /* Leading space on " no " is deliberate, to make both
3157 possibilities the same length. */
3158 if (*s == '-') { use = " no "; ++s; }
3159 sv = newSVpvn(use,4);
a5f75d66 3160 start = s;
1a30305b 3161 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3162 while(isALNUM(*s) || *s==':') {
3163 if( *s++ == ':' ) {
3164 if( *s == ':' )
3165 s++;
3166 else
3167 colon = TRUE;
3168 }
3169 }
3170 if (s == start)
3171 Perl_croak(aTHX_ "Module name required with -%c option",
3172 option);
3173 if (colon)
3174 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3175 "contains single ':'",
63da6837 3176 (int)(s - start), start, option);
b64cb68c 3177 end = s + strlen(s);
c07a80fd 3178 if (*s != '=') {
b64cb68c 3179 sv_catpvn(sv, start, end - start);
0544e6df 3180 if (option == 'm') {
c07a80fd 3181 if (*s != '\0')
cea2e8a9 3182 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3183 sv_catpvs( sv, " ()");
c07a80fd
PP
3184 }
3185 } else {
11343788 3186 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3187 /* Use NUL as q''-delimiter. */
3188 sv_catpvs(sv, " split(/,/,q\0");
3189 ++s;
3190 sv_catpvn(sv, s, end - s);
396482e1 3191 sv_catpvs(sv, "\0)");
c07a80fd 3192 }
b64cb68c 3193 s = end;
29a861e7 3194 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3195 }
3196 else
0544e6df 3197 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3198 return s;
79072805 3199 case 'n':
3280af22 3200 PL_minus_n = TRUE;
79072805
LW
3201 s++;
3202 return s;
3203 case 'p':
3280af22 3204 PL_minus_p = TRUE;
79072805
LW
3205 s++;
3206 return s;
3207 case 's':
f20b2998 3208 forbid_setid('s', FALSE);
3280af22 3209 PL_doswitches = TRUE;
79072805
LW
3210 s++;
3211 return s;
6537fe72
MS
3212 case 't':
3213 if (!PL_tainting)
22f7c9c9 3214 TOO_LATE_FOR('t');
6537fe72
MS
3215 s++;
3216 return s;
463ee0b2 3217 case 'T':
3280af22 3218 if (!PL_tainting)
22f7c9c9 3219 TOO_LATE_FOR('T');
463ee0b2
LW
3220 s++;
3221 return s;
79072805 3222 case 'u':
3280af22 3223 PL_do_undump = TRUE;
79072805
LW
3224 s++;
3225 return s;
3226 case 'U':
3280af22 3227 PL_unsafe = TRUE;
79072805
LW
3228 s++;
3229 return s;
3230 case 'v':
d7aa5382 3231 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3232 upg_version(PL_patchlevel, TRUE);
8e9464f1 3233#if !defined(DGUX)
46807d8e
YO
3234 {
3235 SV* level= vstringify(PL_patchlevel);
3236#ifdef PERL_PATCHNUM
23d483e2
NC
3237# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3238 SV *num = newSVpvs(PERL_PATCHNUM "*");
3239# else
3240 SV *num = newSVpvs(PERL_PATCHNUM);
3241# endif
46807d8e
YO
3242
3243 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3244 SvREFCNT_dec(level);
3245 level= num;
3246 } else {
d0a9311f 3247 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3248 SvREFCNT_dec(num);
3249 }
3250 #endif
3251 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3252 "\nThis is perl " STRINGIFY(PERL_REVISION)
3253 ", version " STRINGIFY(PERL_VERSION)
3254 ", subversion " STRINGIFY(PERL_SUBVERSION)
3255 " (%"SVf") built for " ARCHNAME, level
3256 );
46807d8e
YO
3257 SvREFCNT_dec(level);
3258 }
8e9464f1
JH
3259#else /* DGUX */
3260/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3261 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3262 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3263 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3264 PerlIO_printf(PerlIO_stdout(),
3265 Perl_form(aTHX_ " built under %s at %s %s\n",
3266 OSNAME, __DATE__, __TIME__));
3267 PerlIO_printf(PerlIO_stdout(),
3268 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3269 OSVERS));
8e9464f1 3270#endif /* !DGUX */
fb73857a
PP
3271#if defined(LOCAL_PATCH_COUNT)
3272 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3273 PerlIO_printf(PerlIO_stdout(),
3274 "\n(with %d registered patch%s, "
3275 "see perl -V for more detail)",
bb7a0f54 3276 LOCAL_PATCH_COUNT,
b0e47665 3277 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3278#endif
1a30305b 3279
b0e47665 3280 PerlIO_printf(PerlIO_stdout(),
32709fdf 3281 "\n\nCopyright 1987-2010, Larry Wall\n");
79072805 3282#ifdef MSDOS
b0e47665
GS
3283 PerlIO_printf(PerlIO_stdout(),
3284 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3285#endif
3286#ifdef DJGPP
b0e47665
GS
3287 PerlIO_printf(PerlIO_stdout(),
3288 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3289 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3290#endif
79072805 3291#ifdef OS2
b0e47665
GS
3292 PerlIO_printf(PerlIO_stdout(),
3293 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3294 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3295#endif
79072805 3296#ifdef atarist
b0e47665
GS
3297 PerlIO_printf(PerlIO_stdout(),
3298 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3299#endif
a3f9223b 3300#ifdef __BEOS__
b0e47665
GS
3301 PerlIO_printf(PerlIO_stdout(),
3302 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3303#endif
1d84e8df 3304#ifdef MPE
b0e47665 3305 PerlIO_printf(PerlIO_stdout(),
e583a879 3306 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3307#endif
9d116dd7 3308#ifdef OEMVS
b0e47665
GS
3309 PerlIO_printf(PerlIO_stdout(),
3310 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3311#endif
495c5fdc 3312#ifdef __VOS__
b0e47665 3313 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3314 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3315#endif
092bebab 3316#ifdef __OPEN_VM
b0e47665
GS
3317 PerlIO_printf(PerlIO_stdout(),
3318 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3319#endif
a1a0e61e 3320#ifdef POSIX_BC
b0e47665
GS
3321 PerlIO_printf(PerlIO_stdout(),
3322 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3323#endif
f83d2536 3324#ifdef EPOC
b0e47665 3325 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3326 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3327#endif
e1caacb4 3328#ifdef UNDER_CE
b475b3e6
JH
3329 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3330 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3331 wce_hitreturn();
3332#endif
a0fd4948 3333#ifdef __SYMBIAN32__
27da23d5
JH
3334 PerlIO_printf(PerlIO_stdout(),
3335 "Symbian port by Nokia, 2004-2005\n");
3336#endif
baed7233
DL
3337#ifdef BINARY_BUILD_NOTICE
3338 BINARY_BUILD_NOTICE;
3339#endif
b0e47665
GS
3340 PerlIO_printf(PerlIO_stdout(),
3341 "\n\
79072805 3342Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3343GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3344Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3345this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3346Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3347 my_exit(0);
79072805 3348 case 'w':
b2e5e6ba 3349 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3350 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3351 }
599cee73
PM
3352 s++;
3353 return s;
3354 case 'W':
ac27b0f5 3355 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3356 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3357 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3358 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3359 s++;
3360 return s;
3361 case 'X':
ac27b0f5 3362 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3363 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3364 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3365 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3366 s++;
3367 return s;
a0d0e21e 3368 case '*':
79072805 3369 case ' ':
d3133c89
NC
3370 while( *s == ' ' )
3371 ++s;
3372 if (s[0] == '-') /* Additional switches on #! line. */
3373 return s+1;
79072805 3374 break;
a0d0e21e 3375 case '-':
79072805 3376 case 0:
51882d45 3377#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3378 case '\r':
3379#endif
79072805
LW
3380 case '\n':
3381 case '\t':
3382 break;
aa689395
PP
3383#ifdef ALTERNATE_SHEBANG
3384 case 'S': /* OS/2 needs -S on "extproc" line. */
3385 break;
3386#endif
79072805 3387 default:
cea2e8a9 3388 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3389 }
bd61b366 3390 return NULL;
79072805
LW
3391}
3392
3393/* compliments of Tom Christiansen */
3394
3395/* unexec() can be found in the Gnu emacs distribution */
ee580363 3396/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3397
3398void
864dbfa3 3399Perl_my_unexec(pTHX)
79072805 3400{
b37c2d43 3401 PERL_UNUSED_CONTEXT;
79072805 3402#ifdef UNEXEC
b37c2d43
AL
3403 SV * prog = newSVpv(BIN_EXP, 0);
3404 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3405 int status = 1;
79072805
LW
3406 extern int etext;
3407
396482e1 3408 sv_catpvs(prog, "/perl");
396482e1 3409 sv_catpvs(file, ".perldump");
79072805 3410
ee580363
GS
3411 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3412 /* unexec prints msg to stderr in case of failure */
6ad3d225 3413 PerlProc_exit(status);
79072805 3414#else
a5f75d66
AD
3415# ifdef VMS
3416# include <lib$routines.h>
3417 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3418# elif defined(WIN32) || defined(__CYGWIN__)
3419 Perl_croak(aTHX_ "dump is not supported");
aa689395 3420# else
79072805 3421 ABORT(); /* for use with undump */
aa689395 3422# endif
a5f75d66 3423#endif
79072805
LW
3424}
3425
cb68f92d
GS
3426/* initialize curinterp */
3427STATIC void
cea2e8a9 3428S_init_interp(pTHX)
cb68f92d 3429{
97aff369 3430 dVAR;
acfe0abc
GS
3431#ifdef MULTIPLICITY
3432# define PERLVAR(var,type)
3433# define PERLVARA(var,n,type)
3434# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3435# define PERLVARI(var,type,init) aTHX->var = init;
3436# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3437# else
acfe0abc
GS
3438# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3439# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3440# endif
acfe0abc 3441# include "intrpvar.h"
acfe0abc
GS
3442# undef PERLVAR
3443# undef PERLVARA
3444# undef PERLVARI
3445# undef PERLVARIC
3446#else
3447# define PERLVAR(var,type)
3448# define PERLVARA(var,n,type)
3449# define PERLVARI(var,type,init) PL_##var = init;
3450# define PERLVARIC(var,type,init) PL_##var = init;
3451# include "intrpvar.h"
acfe0abc
GS
3452# undef PERLVAR
3453# undef PERLVARA
3454# undef PERLVARI
3455# undef PERLVARIC
cb68f92d
GS
3456#endif
3457
46ab3289
NC
3458 /* As these are inside a structure, PERLVARI isn't capable of initialising
3459 them */
6c3f0a89
NC
3460 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3461 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3462}
3463
76e3520e 3464STATIC void
cea2e8a9 3465S_init_main_stash(pTHX)
79072805 3466{
97aff369 3467 dVAR;
463ee0b2 3468 GV *gv;
6e72f9df 3469
3280af22 3470 PL_curstash = PL_defstash = newHV();
23579a14
NC
3471 /* We know that the string "main" will be in the global shared string
3472 table, so it's a small saving to use it rather than allocate another
3473 8 bytes. */
18916d0d 3474 PL_curstname = newSVpvs_share("main");
fafc274c 3475 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3476 /* If we hadn't caused another reference to "main" to be in the shared
3477 string table above, then it would be worth reordering these two,
3478 because otherwise all we do is delete "main" from it as a consequence
3479 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3480 SvREFCNT_dec(GvHV(gv));
23579a14 3481 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3482 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3483 SvREADONLY_on(gv);
fafc274c
NC
3484 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3485 SVt_PVAV)));
5a5094bd 3486 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3487 GvMULTI_on(PL_incgv);
fafc274c 3488 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3489 GvMULTI_on(PL_hintgv);
fafc274c 3490 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3491 SvREFCNT_inc_simple_void(PL_defgv);
fafc274c 3492 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5a5094bd 3493 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3494 GvMULTI_on(PL_errgv);
fafc274c 3495 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22