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4b88f280 1#line 2 "perl.c"
a0d0e21e
LW
2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
32709fdf
A
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 by Larry Wall
6 * and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of Eärendil
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
378cc40b 27#include "EXTERN.h"
864dbfa3 28#define PERL_IN_PERL_C
378cc40b 29#include "perl.h"
e3321bb0 30#include "patchlevel.h" /* for local_patches */
4a5df386 31#include "XSUB.h"
378cc40b 32
011f1a1a
JH
33#ifdef NETWARE
34#include "nwutil.h"
011f1a1a
JH
35#endif
36
df5cef82 37/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
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
NIS
1044 hv = PL_defstash;
1045 PL_defstash = 0;
a0d0e21e 1046 SvREFCNT_dec(hv);
5c831c24 1047 SvREFCNT_dec(PL_curstname);
a0714e2c 1048 PL_curstname = NULL;
a0d0e21e 1049
5a844595
GS
1050 /* clear queued errors */
1051 SvREFCNT_dec(PL_errors);
a0714e2c 1052 PL_errors = NULL;
5a844595 1053
dd69841b
BB
1054 SvREFCNT_dec(PL_isarev);
1055
a0d0e21e 1056 FREETMPS;
9b387841 1057 if (destruct_level >= 2) {
3280af22 1058 if (PL_scopestack_ix != 0)
9b387841
NC
1059 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1060 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1061 (long)PL_scopestack_ix);
3280af22 1062 if (PL_savestack_ix != 0)
9b387841
NC
1063 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1064 "Unbalanced saves: %ld more saves than restores\n",
1065 (long)PL_savestack_ix);
3280af22 1066 if (PL_tmps_floor != -1)
9b387841
NC
1067 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1068 (long)PL_tmps_floor + 1);
a0d0e21e 1069 if (cxstack_ix != -1)
9b387841
NC
1070 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1071 (long)cxstack_ix + 1);
a0d0e21e 1072 }
8990e307 1073
776df701 1074#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1075 /* the entries in this list are allocated via SV PVX's, so get freed
1076 * in sv_clean_all */
1077 Safefree(PL_my_cxt_list);
776df701 1078#endif
57bb2458 1079
8990e307 1080 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1081
1082 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1083 while (sv_clean_all() > 2)
5226ed68
JH
1084 ;
1085
d4777f27
GS
1086 AvREAL_off(PL_fdpid); /* no surviving entries */
1087 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1088 PL_fdpid = NULL;
d33b2eba 1089
6c644e78
GS
1090#ifdef HAVE_INTERP_INTERN
1091 sys_intern_clear();
1092#endif
1093
6e72f9df
PP
1094 /* Destruct the global string table. */
1095 {
1096 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1097 * so that sv_free() won't fail on them.
80459961
NC
1098 * Now that the global string table is using a single hunk of memory
1099 * for both HE and HEK, we either need to explicitly unshare it the
1100 * correct way, or actually free things here.
6e72f9df 1101 */
80459961
NC
1102 I32 riter = 0;
1103 const I32 max = HvMAX(PL_strtab);
c4420975 1104 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1105 HE *hent = array[0];
1106
6e72f9df 1107 for (;;) {
0453d815 1108 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1109 HE * const next = HeNEXT(hent);
9014280d 1110 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1111 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1112 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1113 Safefree(hent);
1114 hent = next;
6e72f9df
PP
1115 }
1116 if (!hent) {
1117 if (++riter > max)
1118 break;
1119 hent = array[riter];
1120 }
1121 }
80459961
NC
1122
1123 Safefree(array);
1124 HvARRAY(PL_strtab) = 0;
1125 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1126 }
3280af22 1127 SvREFCNT_dec(PL_strtab);
6e72f9df 1128
e652bb2f 1129#ifdef USE_ITHREADS
c21d1a0f 1130 /* free the pointer tables used for cloning */
a0739874 1131 ptr_table_free(PL_ptr_table);
bf9cdc68 1132 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1133#endif
a0739874 1134
d33b2eba
GS
1135 /* free special SVs */
1136
1137 SvREFCNT(&PL_sv_yes) = 0;
1138 sv_clear(&PL_sv_yes);
1139 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1140 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1141
1142 SvREFCNT(&PL_sv_no) = 0;
1143 sv_clear(&PL_sv_no);
1144 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1145 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1146
9f375a43
DM
1147 {
1148 int i;
1149 for (i=0; i<=2; i++) {
1150 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1151 sv_clear(PERL_DEBUG_PAD(i));
1152 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1153 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1154 }
1155 }
1156
0453d815 1157 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1158 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1159
eba0f806
DM
1160#ifdef DEBUG_LEAKING_SCALARS
1161 if (PL_sv_count != 0) {
1162 SV* sva;
1163 SV* sv;
1164 register SV* svend;
1165
ad64d0ec 1166 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1167 svend = &sva[SvREFCNT(sva)];
1168 for (sv = sva + 1; sv < svend; ++sv) {
1169 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1170 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1171 " flags=0x%"UVxf
fd0854ff 1172 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1173 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1174 "serial %"UVuf"\n",
574b8821
NC
1175 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1176 pTHX__VALUE,
fd0854ff
DM
1177 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1178 sv->sv_debug_line,
1179 sv->sv_debug_inpad ? "for" : "by",
1180 sv->sv_debug_optype ?
1181 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1182 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1183 sv->sv_debug_serial
fd0854ff 1184 );
2aa47728 1185#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1186 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1187#endif
eba0f806
DM
1188 }
1189 }
1190 }
1191 }
2aa47728
NC
1192#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1193 {
1194 int status;
1195 fd_set rset;
1196 /* Wait for up to 4 seconds for child to terminate.
1197 This seems to be the least effort way of timing out on reaping
1198 its exit status. */
1199 struct timeval waitfor = {4, 0};
41e4abd8 1200 int sock = PL_dumper_fd;
2aa47728
NC
1201
1202 shutdown(sock, 1);
1203 FD_ZERO(&rset);
1204 FD_SET(sock, &rset);
1205 select(sock + 1, &rset, NULL, NULL, &waitfor);
1206 waitpid(child, &status, WNOHANG);
1207 close(sock);
1208 }
1209#endif
eba0f806 1210#endif
77abb4c6
NC
1211#ifdef DEBUG_LEAKING_SCALARS_ABORT
1212 if (PL_sv_count)
1213 abort();
1214#endif
bf9cdc68 1215 PL_sv_count = 0;
eba0f806 1216
f1fac472
NC
1217#ifdef PERL_DEBUG_READONLY_OPS
1218 free(PL_slabs);
1219 PL_slabs = NULL;
1220 PL_slab_count = 0;
1221#endif
eba0f806 1222
56a2bab7 1223#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1224 /* No more IO - including error messages ! */
1225 PerlIO_cleanup(aTHX);
1226#endif
1227
9f4bd222 1228 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1229 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1230 for no arg - and will try and SvREFCNT_dec it.
1231 */
1232 SvREFCNT(&PL_sv_undef) = 0;
1233 SvREADONLY_off(&PL_sv_undef);
1234
3280af22 1235 Safefree(PL_origfilename);
bd61b366 1236 PL_origfilename = NULL;
3280af22 1237 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1238 PL_reg_start_tmp = (char**)NULL;
1239 PL_reg_start_tmpl = 0;
43c5f42d 1240 Safefree(PL_reg_curpm);
82ba1be6 1241 Safefree(PL_reg_poscache);
dd28f7bb 1242 free_tied_hv_pool();
3280af22 1243 Safefree(PL_op_mask);
cf36064f 1244 Safefree(PL_psig_name);
bf9cdc68 1245 PL_psig_name = (SV**)NULL;
d525a7b2 1246 PL_psig_ptr = (SV**)NULL;
ce08f86c 1247 Safefree(PL_psig_pend);
bf9cdc68 1248 PL_psig_pend = (int*)NULL;
31c91b43
LR
1249 {
1250 /* We need to NULL PL_psig_pend first, so that
1251 signal handlers know not to use it */
1252 int *psig_save = PL_psig_pend;
1253 PL_psig_pend = (int*)NULL;
1254 Safefree(psig_save);
1255 }
a0714e2c 1256 PL_formfeed = NULL;
6e72f9df 1257 nuke_stacks();
bf9cdc68
RG
1258 PL_tainting = FALSE;
1259 PL_taint_warn = FALSE;
3280af22 1260 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1261 PL_debug = 0;
ac27b0f5 1262
a0d0e21e 1263 DEBUG_P(debprofdump());
d33b2eba 1264
e5dd39fc 1265#ifdef USE_REENTRANT_API
10bc17b6 1266 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1267#endif
1268
612f20c3
GS
1269 sv_free_arenas();
1270
5d9a96ca
DM
1271 while (PL_regmatch_slab) {
1272 regmatch_slab *s = PL_regmatch_slab;
1273 PL_regmatch_slab = PL_regmatch_slab->next;
1274 Safefree(s);
1275 }
1276
fc36a67e
PP
1277 /* As the absolutely last thing, free the non-arena SV for mess() */
1278
3280af22 1279 if (PL_mess_sv) {
f350b448
NC
1280 /* we know that type == SVt_PVMG */
1281
9c63abab 1282 /* it could have accumulated taint magic */
f350b448
NC
1283 MAGIC* mg;
1284 MAGIC* moremagic;
1285 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1286 moremagic = mg->mg_moremagic;
1287 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1288 && mg->mg_len >= 0)
1289 Safefree(mg->mg_ptr);
1290 Safefree(mg);
9c63abab 1291 }
f350b448 1292
fc36a67e 1293 /* we know that type >= SVt_PV */
8bd4d4c5 1294 SvPV_free(PL_mess_sv);
3280af22
NIS
1295 Safefree(SvANY(PL_mess_sv));
1296 Safefree(PL_mess_sv);
a0714e2c 1297 PL_mess_sv = NULL;
fc36a67e 1298 }
37038d91 1299 return STATUS_EXIT;
79072805
LW
1300}
1301
954c1994
GS
1302/*
1303=for apidoc perl_free
1304
1305Releases a Perl interpreter. See L<perlembed>.
1306
1307=cut
1308*/
1309
79072805 1310void
0cb96387 1311perl_free(pTHXx)
79072805 1312{
5174512c
NC
1313 dVAR;
1314
7918f24d
NC
1315 PERL_ARGS_ASSERT_PERL_FREE;
1316
c301d606
DM
1317 if (PL_veto_cleanup)
1318 return;
1319
7cb608b5 1320#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1321 {
1322 /*
1323 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1324 * value as we're probably hunting memory leaks then
1325 */
1326 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1327 if (!s || atoi(s) == 0) {
4fd0a9b8 1328 const U32 old_debug = PL_debug;
55ef9aae
MHM
1329 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1330 thread at thread exit. */
4fd0a9b8
NC
1331 if (DEBUG_m_TEST) {
1332 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1333 "free this thread's memory\n");
1334 PL_debug &= ~ DEBUG_m_FLAG;
1335 }
55ef9aae
MHM
1336 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1337 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1338 PL_debug = old_debug;
55ef9aae
MHM
1339 }
1340 }
7cb608b5
NC
1341#endif
1342
acfe0abc 1343#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1344# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1345 {
acfe0abc 1346# ifdef NETWARE
7af12a34 1347 void *host = nw_internal_host;
acfe0abc 1348# else
7af12a34 1349 void *host = w32_internal_host;
acfe0abc 1350# endif
7af12a34 1351 PerlMem_free(aTHXx);
acfe0abc 1352# ifdef NETWARE
7af12a34 1353 nw_delete_internal_host(host);
acfe0abc 1354# else
7af12a34 1355 win32_delete_internal_host(host);
acfe0abc 1356# endif
7af12a34 1357 }
1c0ca838
GS
1358# else
1359 PerlMem_free(aTHXx);
1360# endif
acfe0abc
GS
1361#else
1362 PerlMem_free(aTHXx);
76e3520e 1363#endif
79072805
LW
1364}
1365
b7f7fff6 1366#if defined(USE_ITHREADS)
aebd1ac7
GA
1367/* provide destructors to clean up the thread key when libperl is unloaded */
1368#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1369
826955bd 1370#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1371#pragma fini "perl_fini"
666ad1ec
GA
1372#elif defined(__sun) && !defined(__GNUC__)
1373#pragma fini (perl_fini)
aebd1ac7
GA
1374#endif
1375
0dbb1585
AL
1376static void
1377#if defined(__GNUC__)
1378__attribute__((destructor))
aebd1ac7 1379#endif
de009b76 1380perl_fini(void)
aebd1ac7 1381{
27da23d5 1382 dVAR;
c301d606 1383 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1384 FREE_THREAD_KEY;
1385}
1386
1387#endif /* WIN32 */
1388#endif /* THREADS */
1389
4b556e6c 1390void
864dbfa3 1391Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1392{
97aff369 1393 dVAR;
3280af22
NIS
1394 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1395 PL_exitlist[PL_exitlistlen].fn = fn;
1396 PL_exitlist[PL_exitlistlen].ptr = ptr;
1397 ++PL_exitlistlen;
4b556e6c
JD
1398}
1399
56cf6df8
RGS
1400#ifdef HAS_PROCSELFEXE
1401/* This is a function so that we don't hold on to MAXPATHLEN
1402 bytes of stack longer than necessary
1403 */
1404STATIC void
e1ec3a88 1405S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1406{
1407 char buf[MAXPATHLEN];
1408 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1409
1410 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1411 includes a spurious NUL which will cause $^X to fail in system
1412 or backticks (this will prevent extensions from being built and
1413 many tests from working). readlink is not meant to add a NUL.
1414 Normal readlink works fine.
1415 */
1416 if (len > 0 && buf[len-1] == '\0') {
1417 len--;
1418 }
1419
1420 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1421 returning the text "unknown" from the readlink rather than the path
1422 to the executable (or returning an error from the readlink). Any valid
1423 path has a '/' in it somewhere, so use that to validate the result.
1424 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1425 */
1426 if (len > 0 && memchr(buf, '/', len)) {
1427 sv_setpvn(sv,buf,len);
1428 }
1429 else {
1430 sv_setpv(sv,arg0);
1431 }
1432}
1433#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1434
1435STATIC void
1436S_set_caret_X(pTHX) {
97aff369 1437 dVAR;
fafc274c 1438 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1439 if (tmpgv) {
1440#ifdef HAS_PROCSELFEXE
1441 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1442#else
1443#ifdef OS2
c69033f2 1444 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1445#else
c69033f2 1446 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1447#endif
1448#endif
1449 }
1450}
1451
954c1994
GS
1452/*
1453=for apidoc perl_parse
1454
1455Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1456
1457=cut
1458*/
1459
79072805 1460int
0cb96387 1461perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1462{
27da23d5 1463 dVAR;
6224f72b 1464 I32 oldscope;
6224f72b 1465 int ret;
db36c5a1 1466 dJMPENV;
8d063cd8 1467
7918f24d
NC
1468 PERL_ARGS_ASSERT_PERL_PARSE;
1469#ifndef MULTIPLICITY
ed6c66dd 1470 PERL_UNUSED_ARG(my_perl);
7918f24d 1471#endif
9d4ba2ae 1472
b0891165
JH
1473#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1474 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1475 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1476 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1477 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1478 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1479 if (!PL_rehash_seed_set)
1480 PL_rehash_seed = get_hash_seed();
b0891165 1481 {
9d4ba2ae 1482 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1483
1b6737cc
AL
1484 if (s && (atoi(s) == 1))
1485 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1486 }
1487#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1488
3280af22 1489 PL_origargc = argc;
e2975953 1490 PL_origargv = argv;
a0d0e21e 1491
a2722ac9
GA
1492 if (PL_origalen != 0) {
1493 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1494 }
1495 else {
3cb9023d
JH
1496 /* Set PL_origalen be the sum of the contiguous argv[]
1497 * elements plus the size of the env in case that it is
e9137a8e 1498 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1499 * as the maximum modifiable length of $0. In the worst case
1500 * the area we are able to modify is limited to the size of
43c32782 1501 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1502 * --jhi */
e1ec3a88 1503 const char *s = NULL;
54bfe034 1504 int i;
1b6737cc 1505 const UV mask =
7d8e7db3 1506 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1507 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1508 const UV aligned =
43c32782
JH
1509 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1510
1511 /* See if all the arguments are contiguous in memory. Note
1512 * that 'contiguous' is a loose term because some platforms
1513 * align the argv[] and the envp[]. If the arguments look
1514 * like non-aligned, assume that they are 'strictly' or
1515 * 'traditionally' contiguous. If the arguments look like
1516 * aligned, we just check that they are within aligned
1517 * PTRSIZE bytes. As long as no system has something bizarre
1518 * like the argv[] interleaved with some other data, we are
1519 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1520 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1521 while (*s) s++;
1522 for (i = 1; i < PL_origargc; i++) {
1523 if ((PL_origargv[i] == s + 1
43c32782 1524#ifdef OS2
c8941eeb 1525 || PL_origargv[i] == s + 2
43c32782 1526#endif
c8941eeb
JH
1527 )
1528 ||
1529 (aligned &&
1530 (PL_origargv[i] > s &&
1531 PL_origargv[i] <=
1532 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1533 )
1534 {
1535 s = PL_origargv[i];
1536 while (*s) s++;
1537 }
1538 else
1539 break;
54bfe034 1540 }
54bfe034 1541 }
a4a109c2
JD
1542
1543#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1544 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1545 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1546 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1547 ||
1548 (aligned &&
1549 (PL_origenviron[0] > s &&
1550 PL_origenviron[0] <=
1551 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1552 )
1553 {
9d419b5f 1554#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1555 s = PL_origenviron[0];
1556 while (*s) s++;
1557#endif
bd61b366 1558 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1559 /* Force copy of environment. */
1560 for (i = 1; PL_origenviron[i]; i++) {
1561 if (PL_origenviron[i] == s + 1
1562 ||
1563 (aligned &&
1564 (PL_origenviron[i] > s &&
1565 PL_origenviron[i] <=
1566 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1567 )
1568 {
1569 s = PL_origenviron[i];
1570 while (*s) s++;
1571 }
1572 else
1573 break;
54bfe034 1574 }
43c32782 1575 }
54bfe034 1576 }
a4a109c2
JD
1577#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1578
2d2af554 1579 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1580 }
1581
3280af22 1582 if (PL_do_undump) {
a0d0e21e
LW
1583
1584 /* Come here if running an undumped a.out. */
1585
3280af22
NIS
1586 PL_origfilename = savepv(argv[0]);
1587 PL_do_undump = FALSE;
a0d0e21e 1588 cxstack_ix = -1; /* start label stack again */
748a9306 1589 init_ids();
b7975bdd
NC
1590 assert (!PL_tainted);
1591 TAINT;
1592 S_set_caret_X(aTHX);
1593 TAINT_NOT;
a0d0e21e
LW
1594 init_postdump_symbols(argc,argv,env);
1595 return 0;
1596 }
1597
3280af22 1598 if (PL_main_root) {
3280af22 1599 op_free(PL_main_root);
5f66b61c 1600 PL_main_root = NULL;
ff0cee69 1601 }
5f66b61c 1602 PL_main_start = NULL;
3280af22 1603 SvREFCNT_dec(PL_main_cv);
601f1833 1604 PL_main_cv = NULL;
79072805 1605
3280af22
NIS
1606 time(&PL_basetime);
1607 oldscope = PL_scopestack_ix;
599cee73 1608 PL_dowarn = G_WARN_OFF;
f86702cc 1609
14dd3ad8 1610 JMPENV_PUSH(ret);
6224f72b 1611 switch (ret) {
312caa8e 1612 case 0:
14dd3ad8 1613 parse_body(env,xsinit);
3c10abe3
AG
1614 if (PL_unitcheckav)
1615 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1616 if (PL_checkav)
1617 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1618 ret = 0;
1619 break;
6224f72b
GS
1620 case 1:
1621 STATUS_ALL_FAILURE;
1622 /* FALL THROUGH */
1623 case 2:
1624 /* my_exit() was called */
3280af22 1625 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1626 LEAVE;
1627 FREETMPS;
3280af22 1628 PL_curstash = PL_defstash;
3c10abe3
AG
1629 if (PL_unitcheckav)
1630 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1631 if (PL_checkav)
1632 call_list(oldscope, PL_checkav);
37038d91 1633 ret = STATUS_EXIT;
14dd3ad8 1634 break;
6224f72b 1635 case 3:
bf49b057 1636 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1637 ret = 1;
1638 break;
6224f72b 1639 }
14dd3ad8
GS
1640 JMPENV_POP;
1641 return ret;
1642}
1643
4a5df386
NC
1644/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1645 miniperl, and we need to see those flags reflected in the values here. */
1646
1647/* What this returns is subject to change. Use the public interface in Config.
1648 */
1649static void
1650S_Internals_V(pTHX_ CV *cv)
1651{
1652 dXSARGS;
1653#ifdef LOCAL_PATCH_COUNT
1654 const int local_patch_count = LOCAL_PATCH_COUNT;
1655#else
1656 const int local_patch_count = 0;
1657#endif
2dc296d2 1658 const int entries = 3 + local_patch_count;
4a5df386
NC
1659 int i;
1660 static char non_bincompat_options[] =
1661# ifdef DEBUGGING
1662 " DEBUGGING"
1663# endif
1664# ifdef NO_MATHOMS
0d311fbe 1665 " NO_MATHOMS"
4a5df386
NC
1666# endif
1667# ifdef PERL_DISABLE_PMC
1668 " PERL_DISABLE_PMC"
1669# endif
1670# ifdef PERL_DONT_CREATE_GVSV
1671 " PERL_DONT_CREATE_GVSV"
1672# endif
9a044a43
NC
1673# ifdef PERL_EXTERNAL_GLOB
1674 " PERL_EXTERNAL_GLOB"
1675# endif
4a5df386
NC
1676# ifdef PERL_IS_MINIPERL
1677 " PERL_IS_MINIPERL"
1678# endif
1679# ifdef PERL_MALLOC_WRAP
1680 " PERL_MALLOC_WRAP"
1681# endif
1682# ifdef PERL_MEM_LOG
1683 " PERL_MEM_LOG"
1684# endif
1685# ifdef PERL_MEM_LOG_NOIMPL
1686 " PERL_MEM_LOG_NOIMPL"
1687# endif
1688# ifdef PERL_USE_DEVEL
1689 " PERL_USE_DEVEL"
1690# endif
1691# ifdef PERL_USE_SAFE_PUTENV
1692 " PERL_USE_SAFE_PUTENV"
1693# endif
de618ee4
NC
1694# ifdef USE_ATTRIBUTES_FOR_PERLIO
1695 " USE_ATTRIBUTES_FOR_PERLIO"
1696# endif
4a5df386
NC
1697# ifdef USE_FAST_STDIO
1698 " USE_FAST_STDIO"
1699# endif
5a8d8935
NC
1700# ifdef USE_PERL_ATOF
1701 " USE_PERL_ATOF"
1702# endif
0d311fbe
NC
1703# ifdef USE_SITECUSTOMIZE
1704 " USE_SITECUSTOMIZE"
1705# endif
4a5df386
NC
1706 ;
1707 PERL_UNUSED_ARG(cv);
1708 PERL_UNUSED_ARG(items);
1709
1710 EXTEND(SP, entries);
1711
1712 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1713 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1714 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1715
1716#ifdef __DATE__
1717# ifdef __TIME__
1718 PUSHs(Perl_newSVpvn_flags(aTHX_
1719 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1720 SVs_TEMP));
1721# else
1722 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1723 SVs_TEMP));
1724# endif
1725#else
1726 PUSHs(&PL_sv_undef);
1727#endif
1728
4a5df386
NC
1729 for (i = 1; i <= local_patch_count; i++) {
1730 /* This will be an undef, if PL_localpatches[i] is NULL. */
1731 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1732 }
1733
1734 XSRETURN(entries);
1735}
1736
be71fc8f
NC
1737#define INCPUSH_UNSHIFT 0x01
1738#define INCPUSH_ADD_OLD_VERS 0x02
1739#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1740#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1741#define INCPUSH_NOT_BASEDIR 0x10
1742#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1743#define INCPUSH_ADD_SUB_DIRS \
1744 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1745
312caa8e 1746STATIC void *
14dd3ad8 1747S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1748{
27da23d5 1749 dVAR;
2f9285f8 1750 PerlIO *rsfp;
312caa8e 1751 int argc = PL_origargc;
8f42b153 1752 char **argv = PL_origargv;
e1ec3a88 1753 const char *scriptname = NULL;
312caa8e 1754 VOL bool dosearch = FALSE;
c7030b81 1755 register char c;
bd61b366 1756 const char *cddir = NULL;
ab019eaa 1757#ifdef USE_SITECUSTOMIZE
20ef40cf 1758 bool minus_f = FALSE;
ab019eaa 1759#endif
009d90df 1760 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1761 bool add_read_e_script = FALSE;
009d90df
DM
1762
1763 SvGROW(linestr_sv, 80);
76f68e9b 1764 sv_setpvs(linestr_sv,"");
312caa8e 1765
6224f72b 1766 init_main_stash();
54310121 1767
c7030b81
NC
1768 {
1769 const char *s;
6224f72b
GS
1770 for (argc--,argv++; argc > 0; argc--,argv++) {
1771 if (argv[0][0] != '-' || !argv[0][1])
1772 break;
6224f72b
GS
1773 s = argv[0]+1;
1774 reswitch:
47f56822 1775 switch ((c = *s)) {
729a02f2 1776 case 'C':
1d5472a9
GS
1777#ifndef PERL_STRICT_CR
1778 case '\r':
1779#endif
6224f72b
GS
1780 case ' ':
1781 case '0':
1782 case 'F':
1783 case 'a':
1784 case 'c':
1785 case 'd':
1786 case 'D':
1787 case 'h':
1788 case 'i':
1789 case 'l':
1790 case 'M':
1791 case 'm':
1792 case 'n':
1793 case 'p':
1794 case 's':
1795 case 'u':
1796 case 'U':
1797 case 'v':
599cee73
PM
1798 case 'W':
1799 case 'X':
6224f72b 1800 case 'w':
97bd5664 1801 if ((s = moreswitches(s)))
6224f72b
GS
1802 goto reswitch;
1803 break;
33b78306 1804
1dbad523 1805 case 't':
22f7c9c9 1806 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1807 if( !PL_tainting ) {
1808 PL_taint_warn = TRUE;
1809 PL_tainting = TRUE;
1810 }
1811 s++;
1812 goto reswitch;
6224f72b 1813 case 'T':
22f7c9c9 1814 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1815 PL_tainting = TRUE;
317ea90d 1816 PL_taint_warn = FALSE;
6224f72b
GS
1817 s++;
1818 goto reswitch;
f86702cc 1819
bc9b29db
RH
1820 case 'E':
1821 PL_minus_E = TRUE;
1822 /* FALL THROUGH */
6224f72b 1823 case 'e':
f20b2998 1824 forbid_setid('e', FALSE);
3280af22 1825 if (!PL_e_script) {
396482e1 1826 PL_e_script = newSVpvs("");
5486870f 1827 add_read_e_script = TRUE;
6224f72b
GS
1828 }
1829 if (*++s)
3280af22 1830 sv_catpv(PL_e_script, s);
6224f72b 1831 else if (argv[1]) {
3280af22 1832 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1833 argc--,argv++;
1834 }
1835 else
47f56822 1836 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1837 sv_catpvs(PL_e_script, "\n");
6224f72b 1838 break;
afe37c7d 1839
20ef40cf 1840 case 'f':
f5542d3a 1841#ifdef USE_SITECUSTOMIZE
20ef40cf 1842 minus_f = TRUE;
f5542d3a 1843#endif
20ef40cf
GA
1844 s++;
1845 goto reswitch;
1846
6224f72b 1847 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1848 forbid_setid('I', FALSE);
bd61b366 1849 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1850 argc--,argv++;
1851 }
6224f72b 1852 if (s && *s) {
0df16ed7 1853 STRLEN len = strlen(s);
55b4bc1c 1854 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1855 }
1856 else
a67e862a 1857 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1858 break;
6224f72b 1859 case 'S':
f20b2998 1860 forbid_setid('S', FALSE);
6224f72b
GS
1861 dosearch = TRUE;
1862 s++;
1863 goto reswitch;
1864 case 'V':
7edfd0ef
NC
1865 {
1866 SV *opts_prog;
1867
7edfd0ef 1868 if (*++s != ':') {
37ca4a5b 1869 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1870 }
1871 else {
1872 ++s;
1873 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1874 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1875 0, s, 0);
1876 s += strlen(s);
1877 }
37ca4a5b 1878 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1879 /* don't look for script or read stdin */
1880 scriptname = BIT_BUCKET;
1881 goto reswitch;
6224f72b 1882 }
6224f72b 1883 case 'x':
3280af22 1884 PL_doextract = TRUE;
6224f72b 1885 s++;
304334da 1886 if (*s)
f4c556ac 1887 cddir = s;
6224f72b
GS
1888 break;
1889 case 0:
1890 break;
1891 case '-':
1892 if (!*++s || isSPACE(*s)) {
1893 argc--,argv++;
1894 goto switch_end;
1895 }
1896 /* catch use of gnu style long options */
1897 if (strEQ(s, "version")) {
dd374669 1898 s = (char *)"v";
6224f72b
GS
1899 goto reswitch;
1900 }
1901 if (strEQ(s, "help")) {
dd374669 1902 s = (char *)"h";
6224f72b
GS
1903 goto reswitch;
1904 }
1905 s--;
1906 /* FALL THROUGH */
1907 default:
cea2e8a9 1908 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1909 }
1910 }
c7030b81
NC
1911 }
1912
6224f72b 1913 switch_end:
54310121 1914
c7030b81
NC
1915 {
1916 char *s;
1917
f675dbe5
CB
1918 if (
1919#ifndef SECURE_INTERNAL_GETENV
1920 !PL_tainting &&
1921#endif
cf756827 1922 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1923 {
74288ac8
GS
1924 while (isSPACE(*s))
1925 s++;
317ea90d 1926 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1927 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1928 PL_tainting = TRUE;
317ea90d
MS
1929 PL_taint_warn = FALSE;
1930 }
74288ac8 1931 else {
bd61b366 1932 char *popt_copy = NULL;
74288ac8 1933 while (s && *s) {
54913509 1934 const char *d;
74288ac8
GS
1935 while (isSPACE(*s))
1936 s++;
1937 if (*s == '-') {
1938 s++;
1939 if (isSPACE(*s))
1940 continue;
1941 }
4ea8f8fb 1942 d = s;
74288ac8
GS
1943 if (!*s)
1944 break;
2b622f1a 1945 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1946 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1947 while (++s && *s) {
1948 if (isSPACE(*s)) {
cf756827 1949 if (!popt_copy) {
bfa6c418
NC
1950 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1951 s = popt_copy + (s - d);
1952 d = popt_copy;
cf756827 1953 }
4ea8f8fb
MS
1954 *s++ = '\0';
1955 break;
1956 }
1957 }
1c4db469 1958 if (*d == 't') {
317ea90d
MS
1959 if( !PL_tainting ) {
1960 PL_taint_warn = TRUE;
1961 PL_tainting = TRUE;
1962 }
1c4db469 1963 } else {
97bd5664 1964 moreswitches(d);
1c4db469 1965 }
6224f72b 1966 }
6224f72b
GS
1967 }
1968 }
c7030b81 1969 }
a0d0e21e 1970
87e06404 1971#if defined(USE_SITECUSTOMIZE) && !defined(PERL_IS_MINIPERL)
20ef40cf 1972 if (!minus_f) {
404ad9dc
NC
1973 /* SITELIB_EXP is a function call on Win32.
1974 The games with local $! are to avoid setting errno if there is no
1975 sitecustomize script. */
1976 const char *const sitelib = SITELIB_EXP;
29a861e7 1977 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1978 Perl_newSVpvf(aTHX_
1979 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
20ef40cf
GA
1980 }
1981#endif
1982
6224f72b
GS
1983 if (!scriptname)
1984 scriptname = argv[0];
3280af22 1985 if (PL_e_script) {
6224f72b
GS
1986 argc++,argv--;
1987 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1988 }
bd61b366 1989 else if (scriptname == NULL) {
6224f72b
GS
1990#ifdef MSDOS
1991 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1992 moreswitches("h");
6224f72b
GS
1993#endif
1994 scriptname = "-";
1995 }
1996
b7975bdd
NC
1997 /* Set $^X early so that it can be used for relocatable paths in @INC */
1998 assert (!PL_tainted);
1999 TAINT;
2000 S_set_caret_X(aTHX);
2001 TAINT_NOT;
2cace6ac 2002 init_perllib();
6224f72b 2003
a52eba0e 2004 {
f20b2998 2005 bool suidscript = FALSE;
829372d3 2006
cc69b689 2007 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2008
2f9285f8 2009 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2010 linestr_sv, rsfp);
6224f72b 2011
64ca3a65 2012#ifndef PERL_MICRO
a52eba0e
NC
2013# if defined(SIGCHLD) || defined(SIGCLD)
2014 {
2015# ifndef SIGCHLD
2016# define SIGCHLD SIGCLD
2017# endif
2018 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2019 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2020 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2021 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2022 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2023 }
0b5b802d 2024 }
a52eba0e 2025# endif
64ca3a65 2026#endif
0b5b802d 2027
e37778c2 2028 if (PL_doextract) {
faef540c 2029
f20b2998 2030 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2031 setuid scripts. */
2032 forbid_setid('x', suidscript);
f20b2998 2033 /* Hence you can't get here if suidscript is true */
faef540c 2034
2f9285f8 2035 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2036 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2037 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2038 }
f4c556ac 2039 }
6224f72b 2040
ea726b52 2041 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2042 CvUNIQUE_on(PL_compcv);
2043
dd2155a4 2044 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2045
dd69841b
BB
2046 PL_isarev = newHV();
2047
0c4f7ff0 2048 boot_core_PerlIO();
6224f72b 2049 boot_core_UNIVERSAL();
e1a479c5 2050 boot_core_mro();
4a5df386 2051 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2052
2053 if (xsinit)
acfe0abc 2054 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2055#ifndef PERL_MICRO
d0d72822 2056#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2057 init_os_extras();
6224f72b 2058#endif
64ca3a65 2059#endif
6224f72b 2060
29209bc5 2061#ifdef USE_SOCKS
1b9c9cf5
DH
2062# ifdef HAS_SOCKS5_INIT
2063 socks5_init(argv[0]);
2064# else
29209bc5 2065 SOCKSinit(argv[0]);
1b9c9cf5 2066# endif
ac27b0f5 2067#endif
29209bc5 2068
6224f72b
GS
2069 init_predump_symbols();
2070 /* init_postdump_symbols not currently designed to be called */
2071 /* more than once (ENV isn't cleared first, for example) */
2072 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2073 if (!PL_do_undump)
6224f72b
GS
2074 init_postdump_symbols(argc,argv,env);
2075
27da23d5
JH
2076 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2077 * or explicitly in some platforms.
085a54d9 2078 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2079 * look like the user wants to use UTF-8. */
a0fd4948 2080#if defined(__SYMBIAN32__)
27da23d5
JH
2081 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2082#endif
e27b5b51 2083# ifndef PERL_IS_MINIPERL
06e66572
JH
2084 if (PL_unicode) {
2085 /* Requires init_predump_symbols(). */
a05d7ebb 2086 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2087 IO* io;
2088 PerlIO* fp;
2089 SV* sv;
2090
a05d7ebb 2091 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2092 * and the default open disciplines. */
a05d7ebb
JH
2093 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2094 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2095 (fp = IoIFP(io)))
2096 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2097 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2098 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2099 (fp = IoOFP(io)))
2100 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2101 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2102 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2103 (fp = IoOFP(io)))
2104 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2105 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2106 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2107 SVt_PV)))) {
a05d7ebb
JH
2108 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2109 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2110 if (in) {
2111 if (out)
76f68e9b 2112 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2113 else
76f68e9b 2114 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2115 }
2116 else if (out)
76f68e9b 2117 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2118 SvSETMAGIC(sv);
2119 }
b310b053
JH
2120 }
2121 }
e27b5b51 2122#endif
b310b053 2123
c7030b81
NC
2124 {
2125 const char *s;
4ffa73a3
JH
2126 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2127 if (strEQ(s, "unsafe"))
2128 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2129 else if (strEQ(s, "safe"))
2130 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2131 else
2132 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2133 }
c7030b81 2134 }
4ffa73a3 2135
81d86705 2136#ifdef PERL_MAD
c7030b81
NC
2137 {
2138 const char *s;
81d86705
NC
2139 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2140 PL_madskills = 1;
2141 PL_minus_c = 1;
2142 if (!s || !s[0])
2143 PL_xmlfp = PerlIO_stdout();
2144 else {
2145 PL_xmlfp = PerlIO_open(s, "w");
2146 if (!PL_xmlfp)
2147 Perl_croak(aTHX_ "Can't open %s", s);
2148 }
1a9a51d4 2149 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2150 }
c7030b81
NC
2151 }
2152
2153 {
2154 const char *s;
81d86705
NC
2155 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2156 PL_madskills = atoi(s);
1a9a51d4 2157 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2158 }
c7030b81 2159 }
81d86705
NC
2160#endif
2161
5486870f 2162 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2163 PL_subname = newSVpvs("main");
6224f72b 2164
5486870f
DM
2165 if (add_read_e_script)
2166 filter_add(read_e_script, NULL);
2167
6224f72b
GS
2168 /* now parse the script */
2169
93189314 2170 SETERRNO(0,SS_NORMAL);
28ac2b49 2171 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2172 if (PL_minus_c)
cea2e8a9 2173 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2174 else {
cea2e8a9 2175 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2176 PL_origfilename);
6224f72b
GS
2177 }
2178 }
57843af0 2179 CopLINE_set(PL_curcop, 0);
3280af22 2180 PL_curstash = PL_defstash;
3280af22
NIS
2181 if (PL_e_script) {
2182 SvREFCNT_dec(PL_e_script);
a0714e2c 2183 PL_e_script = NULL;
6224f72b
GS
2184 }
2185
3280af22 2186 if (PL_do_undump)
6224f72b
GS
2187 my_unexec();
2188
57843af0
GS
2189 if (isWARN_ONCE) {
2190 SAVECOPFILE(PL_curcop);
2191 SAVECOPLINE(PL_curcop);
3280af22 2192 gv_check(PL_defstash);
57843af0 2193 }
6224f72b
GS
2194
2195 LEAVE;
2196 FREETMPS;
2197
2198#ifdef MYMALLOC
f6a607bc
RGS
2199 {
2200 const char *s;
6224f72b
GS
2201 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2202 dump_mstats("after compilation:");
f6a607bc 2203 }
6224f72b
GS
2204#endif
2205
2206 ENTER;
febb3a6d 2207 PL_restartjmpenv = NULL;
3280af22 2208 PL_restartop = 0;
312caa8e 2209 return NULL;
6224f72b
GS
2210}
2211
954c1994
GS
2212/*
2213=for apidoc perl_run
2214
2215Tells a Perl interpreter to run. See L<perlembed>.
2216
2217=cut
2218*/
2219
6224f72b 2220int
0cb96387 2221perl_run(pTHXx)
6224f72b 2222{
97aff369 2223 dVAR;
6224f72b 2224 I32 oldscope;
14dd3ad8 2225 int ret = 0;
db36c5a1 2226 dJMPENV;
6224f72b 2227
7918f24d
NC
2228 PERL_ARGS_ASSERT_PERL_RUN;
2229#ifndef MULTIPLICITY
ed6c66dd 2230 PERL_UNUSED_ARG(my_perl);
7918f24d 2231#endif
9d4ba2ae 2232
3280af22 2233 oldscope = PL_scopestack_ix;
96e176bf
CL
2234#ifdef VMS
2235 VMSISH_HUSHED = 0;
2236#endif
6224f72b 2237
14dd3ad8 2238 JMPENV_PUSH(ret);
6224f72b
GS
2239 switch (ret) {
2240 case 1:
2241 cxstack_ix = -1; /* start context stack again */
312caa8e 2242 goto redo_body;
14dd3ad8 2243 case 0: /* normal completion */
14dd3ad8
GS
2244 redo_body:
2245 run_body(oldscope);
14dd3ad8
GS
2246 /* FALL THROUGH */
2247 case 2: /* my_exit() */
3280af22 2248 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2249 LEAVE;
2250 FREETMPS;
3280af22 2251 PL_curstash = PL_defstash;
3a1ee7e8 2252 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2253 PL_endav && !PL_minus_c)
2254 call_list(oldscope, PL_endav);
6224f72b
GS
2255#ifdef MYMALLOC
2256 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2257 dump_mstats("after execution: ");
2258#endif
37038d91 2259 ret = STATUS_EXIT;
14dd3ad8 2260 break;
6224f72b 2261 case 3:
312caa8e
CS
2262 if (PL_restartop) {
2263 POPSTACK_TO(PL_mainstack);
2264 goto redo_body;
6224f72b 2265 }
bf49b057 2266 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2267 FREETMPS;
14dd3ad8
GS
2268 ret = 1;
2269 break;
6224f72b
GS
2270 }
2271
14dd3ad8
GS
2272 JMPENV_POP;
2273 return ret;
312caa8e
CS
2274}
2275
dd374669 2276STATIC void
14dd3ad8
GS
2277S_run_body(pTHX_ I32 oldscope)
2278{
97aff369 2279 dVAR;
6224f72b 2280 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2281 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2282
3280af22 2283 if (!PL_restartop) {
81d86705
NC
2284#ifdef PERL_MAD
2285 if (PL_xmlfp) {
2286 xmldump_all();
2287 exit(0); /* less likely to core dump than my_exit(0) */
2288 }
2289#endif
cf2782cd 2290#ifdef DEBUGGING
f0e3f042
CS
2291 if (DEBUG_x_TEST || DEBUG_B_TEST)
2292 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2293 if (!DEBUG_q_TEST)
2294 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2295#endif
6224f72b 2296
3280af22 2297 if (PL_minus_c) {
bf49b057 2298 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2299 my_exit(0);
2300 }
3280af22 2301 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2302 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2303 if (PL_initav)
2304 call_list(oldscope, PL_initav);
f1fac472
NC
2305#ifdef PERL_DEBUG_READONLY_OPS
2306 Perl_pending_Slabs_to_ro(aTHX);
2307#endif
6224f72b
GS
2308 }
2309
2310 /* do it */
2311
3280af22 2312 if (PL_restartop) {
febb3a6d 2313 PL_restartjmpenv = NULL;
533c011a 2314 PL_op = PL_restartop;
3280af22 2315 PL_restartop = 0;
cea2e8a9 2316 CALLRUNOPS(aTHX);
6224f72b 2317 }
3280af22
NIS
2318 else if (PL_main_start) {
2319 CvDEPTH(PL_main_cv) = 1;
533c011a 2320 PL_op = PL_main_start;
cea2e8a9 2321 CALLRUNOPS(aTHX);
6224f72b 2322 }
f6b3007c
JH
2323 my_exit(0);
2324 /* NOTREACHED */
6224f72b
GS
2325}
2326
954c1994 2327/*
ccfc67b7
JH
2328=head1 SV Manipulation Functions
2329
954c1994
GS
2330=for apidoc p||get_sv
2331
64ace3f8
NC
2332Returns the SV of the specified Perl scalar. C<flags> are passed to
2333C<gv_fetchpv>. If C<GV_ADD> is set and the
2334Perl variable does not exist then it will be created. If C<flags> is zero
2335and the variable does not exist then NULL is returned.
954c1994
GS
2336
2337=cut
2338*/
2339
6224f72b 2340SV*
64ace3f8 2341Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2342{
2343 GV *gv;
7918f24d
NC
2344
2345 PERL_ARGS_ASSERT_GET_SV;
2346
64ace3f8 2347 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2348 if (gv)
2349 return GvSV(gv);
a0714e2c 2350 return NULL;
6224f72b
GS
2351}
2352
954c1994 2353/*
ccfc67b7
JH
2354=head1 Array Manipulation Functions
2355
954c1994
GS
2356=for apidoc p||get_av
2357
cbfd0a87
NC
2358Returns the AV of the specified Perl array. C<flags> are passed to
2359C<gv_fetchpv>. If C<GV_ADD> is set and the
2360Perl variable does not exist then it will be created. If C<flags> is zero
2361and the variable does not exist then NULL is returned.
954c1994
GS
2362
2363=cut
2364*/
2365
6224f72b 2366AV*
cbfd0a87 2367Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2368{
cbfd0a87 2369 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2370
2371 PERL_ARGS_ASSERT_GET_AV;
2372
cbfd0a87 2373 if (flags)
6224f72b
GS
2374 return GvAVn(gv);
2375 if (gv)
2376 return GvAV(gv);
7d49f689 2377 return NULL;
6224f72b
GS
2378}
2379
954c1994 2380/*
ccfc67b7
JH
2381=head1 Hash Manipulation Functions
2382
954c1994
GS
2383=for apidoc p||get_hv
2384
6673a63c
NC
2385Returns the HV of the specified Perl hash. C<flags> are passed to
2386C<gv_fetchpv>. If C<GV_ADD> is set and the
2387Perl variable does not exist then it will be created. If C<flags> is zero
2388and the variable does not exist then NULL is returned.
954c1994
GS
2389
2390=cut
2391*/
2392
6224f72b 2393HV*
6673a63c 2394Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2395{
6673a63c 2396 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2397
2398 PERL_ARGS_ASSERT_GET_HV;
2399
6673a63c 2400 if (flags)
a0d0e21e
LW
2401 return GvHVn(gv);
2402 if (gv)
2403 return GvHV(gv);
5c284bb0 2404 return NULL;
a0d0e21e
LW
2405}
2406
954c1994 2407/*
ccfc67b7
JH
2408=head1 CV Manipulation Functions
2409
780a5241
NC
2410=for apidoc p||get_cvn_flags
2411
2412Returns the CV of the specified Perl subroutine. C<flags> are passed to
2413C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2414exist then it will be declared (which has the same effect as saying
2415C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2416then NULL is returned.
2417
954c1994
GS
2418=for apidoc p||get_cv
2419
780a5241 2420Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2421
2422=cut
2423*/
2424
a0d0e21e 2425CV*
780a5241 2426Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2427{
780a5241 2428 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2429 /* XXX this is probably not what they think they're getting.
2430 * It has the same effect as "sub name;", i.e. just a forward
2431 * declaration! */
7918f24d
NC
2432
2433 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2434
780a5241 2435 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2436 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2437 return newSUB(start_subparse(FALSE, 0),
780a5241 2438 newSVOP(OP_CONST, 0, sv),
5f66b61c 2439 NULL, NULL);
780a5241 2440 }
a0d0e21e 2441 if (gv)
8ebc5c01 2442 return GvCVu(gv);
601f1833 2443 return NULL;
a0d0e21e
LW
2444}
2445
2c67934f
NC
2446/* Nothing in core calls this now, but we can't replace it with a macro and
2447 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2448CV*
2449Perl_get_cv(pTHX_ const char *name, I32 flags)
2450{
7918f24d
NC
2451 PERL_ARGS_ASSERT_GET_CV;
2452
780a5241
NC
2453 return get_cvn_flags(name, strlen(name), flags);
2454}
2455
79072805
LW
2456/* Be sure to refetch the stack pointer after calling these routines. */
2457
954c1994 2458/*
ccfc67b7
JH
2459
2460=head1 Callback Functions
2461
954c1994
GS
2462=for apidoc p||call_argv
2463
2464Performs a callback to the specified Perl sub. See L<perlcall>.
2465
2466=cut
2467*/
2468
a0d0e21e 2469I32
8f42b153 2470Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2471
8ac85365
NIS
2472 /* See G_* flags in cop.h */
2473 /* null terminated arg list */
8990e307 2474{
97aff369 2475 dVAR;
a0d0e21e 2476 dSP;
8990e307 2477
7918f24d
NC
2478 PERL_ARGS_ASSERT_CALL_ARGV;
2479
924508f0 2480 PUSHMARK(SP);
a0d0e21e 2481 if (argv) {
8990e307 2482 while (*argv) {
6e449a3a 2483 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2484 argv++;
2485 }
a0d0e21e 2486 PUTBACK;
8990e307 2487 }
864dbfa3 2488 return call_pv(sub_name, flags);
8990e307
LW
2489}
2490
954c1994
GS
2491/*
2492=for apidoc p||call_pv
2493
2494Performs a callback to the specified Perl sub. See L<perlcall>.
2495
2496=cut
2497*/
2498
a0d0e21e 2499I32
864dbfa3 2500Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2501 /* name of the subroutine */
2502 /* See G_* flags in cop.h */
a0d0e21e 2503{
7918f24d
NC
2504 PERL_ARGS_ASSERT_CALL_PV;
2505
0da0e728 2506 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2507}
2508
954c1994
GS
2509/*
2510=for apidoc p||call_method
2511
2512Performs a callback to the specified Perl method. The blessed object must
2513be on the stack. See L<perlcall>.
2514
2515=cut
2516*/
2517
a0d0e21e 2518I32
864dbfa3 2519Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2520 /* name of the subroutine */
2521 /* See G_* flags in cop.h */
a0d0e21e 2522{
46ca9bac 2523 STRLEN len;
7918f24d
NC
2524 PERL_ARGS_ASSERT_CALL_METHOD;
2525
46ca9bac 2526 len = strlen(methname);
2527
2528 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2529 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2530}
2531
2532/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2533/*
2534=for apidoc p||call_sv
2535
2536Performs a callback to the Perl sub whose name is in the SV. See
2537L<perlcall>.
2538
2539=cut
2540*/
2541
a0d0e21e 2542I32
001d637e 2543Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2544 /* See G_* flags in cop.h */
a0d0e21e 2545{
27da23d5 2546 dVAR; dSP;
a0d0e21e 2547 LOGOP myop; /* fake syntax tree node */
968b3946 2548 UNOP method_op;
aa689395 2549 I32 oldmark;
8ea43dc8 2550 VOL I32 retval = 0;
a0d0e21e 2551 I32 oldscope;
54310121 2552 bool oldcatch = CATCH_GET;
6224f72b 2553 int ret;
c4420975 2554 OP* const oldop = PL_op;
db36c5a1 2555 dJMPENV;
1e422769 2556
7918f24d
NC
2557 PERL_ARGS_ASSERT_CALL_SV;
2558
a0d0e21e
LW
2559 if (flags & G_DISCARD) {
2560 ENTER;
2561 SAVETMPS;
2562 }
2f8edad0
NC
2563 if (!(flags & G_WANT)) {
2564 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2565 */
2566 flags |= G_SCALAR;
2567 }
a0d0e21e 2568
aa689395 2569 Zero(&myop, 1, LOGOP);
5f66b61c 2570 myop.op_next = NULL;
f51d4af5 2571 if (!(flags & G_NOARGS))
aa689395 2572 myop.op_flags |= OPf_STACKED;
4f911530 2573 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2574 SAVEOP();
533c011a 2575 PL_op = (OP*)&myop;
aa689395 2576
3280af22
NIS
2577 EXTEND(PL_stack_sp, 1);
2578 *++PL_stack_sp = sv;
aa689395 2579 oldmark = TOPMARK;
3280af22 2580 oldscope = PL_scopestack_ix;
a0d0e21e 2581
3280af22 2582 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2583 /* Handle first BEGIN of -d. */
3280af22 2584 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2585 /* Try harder, since this may have been a sighandler, thus
2586 * curstash may be meaningless. */
ea726b52 2587 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2588 && !(flags & G_NODEBUG))
533c011a 2589 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2590
968b3946
GS
2591 if (flags & G_METHOD) {
2592 Zero(&method_op, 1, UNOP);
2593 method_op.op_next = PL_op;
2594 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2595 method_op.op_type = OP_METHOD;
968b3946 2596 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2597 myop.op_type = OP_ENTERSUB;
f39d0b86 2598 PL_op = (OP*)&method_op;
968b3946
GS
2599 }
2600
312caa8e 2601 if (!(flags & G_EVAL)) {
0cdb2077 2602 CATCH_SET(TRUE);
d6f07c05 2603 CALL_BODY_SUB((OP*)&myop);
312caa8e 2604 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2605 CATCH_SET(oldcatch);
312caa8e
CS
2606 }
2607 else {
d78bda3d 2608 myop.op_other = (OP*)&myop;
3280af22 2609 PL_markstack_ptr--;
edb2152a 2610 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2611 PL_markstack_ptr++;
a0d0e21e 2612
14dd3ad8 2613 JMPENV_PUSH(ret);
edb2152a 2614
6224f72b
GS
2615 switch (ret) {
2616 case 0:
14dd3ad8 2617 redo_body:
d6f07c05 2618 CALL_BODY_SUB((OP*)&myop);
312caa8e 2619 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2620 if (!(flags & G_KEEPERR)) {
ab69dbc2 2621 CLEAR_ERRSV();
8433848b 2622 }
a0d0e21e 2623 break;
6224f72b 2624 case 1:
f86702cc 2625 STATUS_ALL_FAILURE;
a0d0e21e 2626 /* FALL THROUGH */
6224f72b 2627 case 2:
a0d0e21e 2628 /* my_exit() was called */
3280af22 2629 PL_curstash = PL_defstash;
a0d0e21e 2630 FREETMPS;
14dd3ad8 2631 JMPENV_POP;
f86702cc 2632 my_exit_jump();
a0d0e21e 2633 /* NOTREACHED */
6224f72b 2634 case 3:
3280af22 2635 if (PL_restartop) {
febb3a6d 2636 PL_restartjmpenv = NULL;
533c011a 2637 PL_op = PL_restartop;
3280af22 2638 PL_restartop = 0;
312caa8e 2639 goto redo_body;
a0d0e21e 2640 }
3280af22 2641 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2642 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2643 retval = 0;
2644 else {
2645 retval = 1;
3280af22 2646 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2647 }
312caa8e 2648 break;
a0d0e21e 2649 }
a0d0e21e 2650
edb2152a
NC
2651 if (PL_scopestack_ix > oldscope)
2652 delete_eval_scope();
14dd3ad8 2653 JMPENV_POP;
a0d0e21e 2654 }
1e422769 2655
a0d0e21e 2656 if (flags & G_DISCARD) {
3280af22 2657 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2658 retval = 0;
2659 FREETMPS;
2660 LEAVE;
2661 }
533c011a 2662 PL_op = oldop;
a0d0e21e
LW
2663 return retval;
2664}
2665
6e72f9df 2666/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2667
954c1994
GS
2668/*
2669=for apidoc p||eval_sv
2670
2671Tells Perl to C<eval> the string in the SV.
2672
2673=cut
2674*/
2675
a0d0e21e 2676I32
864dbfa3 2677Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2678
8ac85365 2679 /* See G_* flags in cop.h */
a0d0e21e 2680{
97aff369 2681 dVAR;
924508f0 2682 dSP;
a0d0e21e 2683 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2684 VOL I32 oldmark = SP - PL_stack_base;
2685 VOL I32 retval = 0;
6224f72b 2686 int ret;
c4420975 2687 OP* const oldop = PL_op;
db36c5a1 2688 dJMPENV;
84902520 2689
7918f24d
NC
2690 PERL_ARGS_ASSERT_EVAL_SV;
2691
4633a7c4
LW
2692 if (flags & G_DISCARD) {
2693 ENTER;
2694 SAVETMPS;
2695 }
2696
462e5cf6 2697 SAVEOP();
533c011a
NIS
2698 PL_op = (OP*)&myop;
2699 Zero(PL_op, 1, UNOP);
3280af22
NIS
2700 EXTEND(PL_stack_sp, 1);
2701 *++PL_stack_sp = sv;
79072805 2702
4633a7c4
LW
2703 if (!(flags & G_NOARGS))
2704 myop.op_flags = OPf_STACKED;
5f66b61c 2705 myop.op_next = NULL;
6e72f9df 2706 myop.op_type = OP_ENTEREVAL;
4f911530 2707 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2708 if (flags & G_KEEPERR)
2709 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2710
dedbcade
DM
2711 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2712 * before a PUSHEVAL, which corrupts the stack after a croak */
2713 TAINT_PROPER("eval_sv()");
2714
14dd3ad8 2715 JMPENV_PUSH(ret);
6224f72b
GS
2716 switch (ret) {
2717 case 0:
14dd3ad8 2718 redo_body:
d6f07c05 2719 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2720 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2721 if (!(flags & G_KEEPERR)) {
ab69dbc2 2722 CLEAR_ERRSV();
8433848b 2723 }
4633a7c4 2724 break;
6224f72b 2725 case 1:
f86702cc 2726 STATUS_ALL_FAILURE;
4633a7c4 2727 /* FALL THROUGH */
6224f72b 2728 case 2:
4633a7c4 2729 /* my_exit() was called */
3280af22 2730 PL_curstash = PL_defstash;
4633a7c4 2731 FREETMPS;
14dd3ad8 2732 JMPENV_POP;
f86702cc 2733 my_exit_jump();
4633a7c4 2734 /* NOTREACHED */
6224f72b 2735 case 3:
3280af22 2736 if (PL_restartop) {
febb3a6d 2737 PL_restartjmpenv = NULL;
533c011a 2738 PL_op = PL_restartop;
3280af22 2739 PL_restartop = 0;
312caa8e 2740 goto redo_body;
4633a7c4 2741 }
3280af22 2742 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2743 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2744 retval = 0;
2745 else {
2746 retval = 1;
3280af22 2747 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2748 }
312caa8e 2749 break;
4633a7c4
LW
2750 }
2751
14dd3ad8 2752 JMPENV_POP;
4633a7c4 2753 if (flags & G_DISCARD) {
3280af22 2754 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2755 retval = 0;
2756 FREETMPS;
2757 LEAVE;
2758 }
533c011a 2759 PL_op = oldop;
4633a7c4
LW
2760 return retval;
2761}
2762
954c1994
GS
2763/*
2764=for apidoc p||eval_pv
2765
2766Tells Perl to C<eval> the given string and return an SV* result.
2767
2768=cut
2769*/
2770
137443ea 2771SV*
864dbfa3 2772Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2773{
97aff369 2774 dVAR;
137443ea
PP
2775 dSP;
2776 SV* sv = newSVpv(p, 0);
2777
7918f24d
NC
2778 PERL_ARGS_ASSERT_EVAL_PV;
2779
864dbfa3 2780 eval_sv(sv, G_SCALAR);
137443ea
PP
2781 SvREFCNT_dec(sv);
2782
2783 SPAGAIN;
2784 sv = POPs;
2785 PUTBACK;
2786
2d8e6c8d 2787 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2788 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2789 }
137443ea
PP
2790
2791 return sv;
2792}
2793
4633a7c4
LW
2794/* Require a module. */
2795
954c1994 2796/*
ccfc67b7
JH
2797=head1 Embedding Functions
2798
954c1994
GS
2799=for apidoc p||require_pv
2800
7d3fb230
BS
2801Tells Perl to C<require> the file named by the string argument. It is
2802analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2803implemented that way; consider using load_module instead.
954c1994 2804
7d3fb230 2805=cut */
954c1994 2806
4633a7c4 2807void
864dbfa3 2808Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2809{
97aff369 2810 dVAR;
d3acc0f7 2811 dSP;
97aff369 2812 SV* sv;
7918f24d
NC
2813
2814 PERL_ARGS_ASSERT_REQUIRE_PV;
2815
e788e7d3 2816 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2817 PUTBACK;
be41e5d9
NC
2818 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2819 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2820 SPAGAIN;
2821 POPSTACK;
79072805
LW
2822}
2823
76e3520e 2824STATIC void
e1ec3a88 2825S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2826{
ab821d7f 2827 /* This message really ought to be max 23 lines.
75c72d73 2828 * Removed -h because the user already knows that option. Others? */
fb73857a 2829
1566c39d
NC
2830 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2831 minimum of 509 character string literals. */
27da23d5 2832 static const char * const usage_msg[] = {
1566c39d
NC
2833" -0[octal] specify record separator (\\0, if no argument)\n"
2834" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2835" -C[number/list] enables the listed Unicode features\n"
2836" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2837" -d[:debugger] run program under debugger\n"
2838" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2839" -e program one line of program (several -e's allowed, omit programfile)\n"
2840" -E program like -e, but enables all optional features\n"
2841" -f don't do $sitelib/sitecustomize.pl at startup\n"
2842" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2843" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2844" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2845" -l[octal] enable line ending processing, specifies line terminator\n"
2846" -[mM][-]module execute \"use/no module...\" before executing program\n"
2847" -n assume \"while (<>) { ... }\" loop around program\n"
2848" -p assume loop like -n but print line also, like sed\n"
2849" -s enable rudimentary parsing for switches after programfile\n"
2850" -S look for programfile using PATH environment variable\n",
2851" -t enable tainting warnings\n"
2852" -T enable tainting checks\n"
2853" -u dump core after parsing program\n"
2854" -U allow unsafe operations\n"
2855" -v print version, patchlevel and license\n"
2856" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2857" -w enable many useful warnings\n"
1566c39d
NC
2858" -W enable all warnings\n"
2859" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2860" -X disable all warnings\n"
2861" \n"
2862"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2863NULL
2864};
27da23d5 2865 const char * const *p = usage_msg;
1566c39d 2866 PerlIO *out = PerlIO_stdout();
fb73857a 2867
7918f24d
NC
2868 PERL_ARGS_ASSERT_USAGE;
2869
1566c39d
NC
2870 PerlIO_printf(out,
2871 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2872 name);
fb73857a 2873 while (*p)
1566c39d 2874 PerlIO_puts(out, *p++);
4633a7c4
LW
2875}
2876
b4ab917c
DM
2877/* convert a string of -D options (or digits) into an int.
2878 * sets *s to point to the char after the options */
2879
2880#ifdef DEBUGGING
2881int
e1ec3a88 2882Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2883{
27da23d5 2884 static const char * const usage_msgd[] = {
651b8f1a
NC
2885 " Debugging flag values: (see also -d)\n"
2886 " p Tokenizing and parsing (with v, displays parse stack)\n"
2887 " s Stack snapshots (with v, displays all stacks)\n"
2888 " l Context (loop) stack processing\n"
2889 " t Trace execution\n"
2890 " o Method and overloading resolution\n",
2891 " c String/numeric conversions\n"
2892 " P Print profiling info, source file input state\n"
2893 " m Memory and SV allocation\n"
2894 " f Format processing\n"
2895 " r Regular expression parsing and execution\n"
2896 " x Syntax tree dump\n",
2897 " u Tainting checks\n"
2898 " H Hash dump -- usurps values()\n"
2899 " X Scratchpad allocation\n"
2900 " D Cleaning up\n"
2901 " T Tokenising\n"
2902 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2903 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2904 " v Verbose: use in conjunction with other flags\n"
2905 " C Copy On Write\n"
2906 " A Consistency checks on internal structures\n"
2907 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2908 " M trace smart match resolution\n"
2909 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2910 NULL
2911 };
b4ab917c 2912 int i = 0;
7918f24d
NC
2913
2914 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2915
b4ab917c
DM
2916 if (isALPHA(**s)) {
2917 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2918 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2919
2920 for (; isALNUM(**s); (*s)++) {
c4420975 2921 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2922 if (d)
2923 i |= 1 << (d - debopts);
2924 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2925 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2926 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2927 }
2928 }
e6e64d9b 2929 else if (isDIGIT(**s)) {
b4ab917c
DM
2930 i = atoi(*s);
2931 for (; isALNUM(**s); (*s)++) ;
2932 }
ddcf8bc1 2933 else if (givehelp) {
06e869a4 2934 const char *const *p = usage_msgd;
651b8f1a 2935 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 2936 }
b4ab917c
DM
2937# ifdef EBCDIC
2938 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2939 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2940 "-Dp not implemented on this platform\n");
2941# endif
2942 return i;
2943}
2944#endif
2945
79072805
LW
2946/* This routine handles any switches that can be given during run */
2947
c7030b81
NC
2948const char *
2949Perl_moreswitches(pTHX_ const char *s)
79072805 2950{
27da23d5 2951 dVAR;
84c133a0 2952 UV rschar;
0544e6df 2953 const char option = *s; /* used to remember option in -m/-M code */
79072805 2954
7918f24d
NC
2955 PERL_ARGS_ASSERT_MORESWITCHES;
2956
79072805
LW
2957 switch (*s) {
2958 case '0':
a863c7d1 2959 {
f2095865 2960 I32 flags = 0;
a3b680e6 2961 STRLEN numlen;
f2095865
JH
2962
2963 SvREFCNT_dec(PL_rs);
2964 if (s[1] == 'x' && s[2]) {
a3b680e6 2965 const char *e = s+=2;
f2095865
JH
2966 U8 *tmps;
2967
a3b680e6
AL
2968 while (*e)
2969 e++;
f2095865
JH
2970 numlen = e - s;
2971 flags = PERL_SCAN_SILENT_ILLDIGIT;
2972 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2973 if (s + numlen < e) {
2974 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2975 numlen = 0;
2976 s--;
2977 }
396482e1 2978 PL_rs = newSVpvs("");
c5661c80 2979 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2980 tmps = (U8*)SvPVX(PL_rs);
2981 uvchr_to_utf8(tmps, rschar);
2982 SvCUR_set(PL_rs, UNISKIP(rschar));
2983 SvUTF8_on(PL_rs);
2984 }
2985 else {
2986 numlen = 4;
2987 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2988 if (rschar & ~((U8)~0))
2989 PL_rs = &PL_sv_undef;
2990 else if (!rschar && numlen >= 2)
396482e1 2991 PL_rs = newSVpvs("");
f2095865
JH
2992 else {
2993 char ch = (char)rschar;
2994 PL_rs = newSVpvn(&ch, 1);
2995 }
2996 }
64ace3f8 2997 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 2998 return s + numlen;
a863c7d1 2999 }
46487f74 3000 case 'C':
a05d7ebb 3001 s++;
dd374669 3002 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3003 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3004 PL_utf8cache = -1;
46487f74 3005 return s;
2304df62 3006 case 'F':
3280af22 3007 PL_minus_F = TRUE;
ebce5377
RGS
3008 PL_splitstr = ++s;
3009 while (*s && !isSPACE(*s)) ++s;
e49e380e 3010 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3011 return s;
79072805 3012 case 'a':
3280af22 3013 PL_minus_a = TRUE;
79072805
LW
3014 s++;
3015 return s;
3016 case 'c':
3280af22 3017 PL_minus_c = TRUE;
79072805
LW
3018 s++;
3019 return s;
3020 case 'd':
f20b2998 3021 forbid_setid('d', FALSE);
4633a7c4 3022 s++;
2cbb2ee1
RGS
3023
3024 /* -dt indicates to the debugger that threads will be used */
3025 if (*s == 't' && !isALNUM(s[1])) {
3026 ++s;
3027 my_setenv("PERL5DB_THREADED", "1");
3028 }
3029
70c94a19
RR
3030 /* The following permits -d:Mod to accepts arguments following an =
3031 in the fashion that -MSome::Mod does. */
3032 if (*s == ':' || *s == '=') {
f85893a1
NC
3033 const char *start = ++s;
3034 const char *const end = s + strlen(s);
396482e1 3035 SV * const sv = newSVpvs("use Devel::");
f85893a1 3036
70c94a19
RR
3037 /* We now allow -d:Module=Foo,Bar */
3038 while(isALNUM(*s) || *s==':') ++s;
3039 if (*s != '=')
f85893a1 3040 sv_catpvn(sv, start, end - start);
70c94a19
RR
3041 else {
3042 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3043 /* Don't use NUL as q// delimiter here, this string goes in the
3044 * environment. */
3045 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3046 }
f85893a1 3047 s = end;
184f32ec 3048 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3049 SvREFCNT_dec(sv);
4633a7c4 3050 }
ed094faf 3051 if (!PL_perldb) {
3280af22 3052 PL_perldb = PERLDB_ALL;
a0d0e21e 3053 init_debugger();
ed094faf 3054 }
79072805
LW
3055 return s;
3056 case 'D':
0453d815 3057 {
79072805 3058#ifdef DEBUGGING
f20b2998 3059 forbid_setid('D', FALSE);
b4ab917c 3060 s++;
dd374669 3061 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3062#else /* !DEBUGGING */
0453d815 3063 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3064 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3065 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3066 for (s++; isALNUM(*s); s++) ;
79072805 3067#endif
79072805 3068 return s;
0453d815 3069 }
4633a7c4 3070 case 'h':
ac27b0f5 3071 usage(PL_origargv[0]);
7ca617d0 3072 my_exit(0);
79072805 3073 case 'i':
43c5f42d 3074 Safefree(PL_inplace);
c030f24b
GH
3075#if defined(__CYGWIN__) /* do backup extension automagically */
3076 if (*(s+1) == '\0') {
c86a4f2e 3077 PL_inplace = savepvs(".bak");
c030f24b
GH
3078 return s+1;
3079 }
3080#endif /* __CYGWIN__ */
5ef5d758 3081 {
d4c19fe8 3082 const char * const start = ++s;
5ef5d758
NC
3083 while (*s && !isSPACE(*s))
3084 ++s;
3085
3086 PL_inplace = savepvn(start, s - start);
3087 }
7b8d334a 3088 if (*s) {
5ef5d758 3089 ++s;
7b8d334a 3090 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3091 s++;
7b8d334a 3092 }
fb73857a 3093 return s;
4e49a025 3094 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3095 forbid_setid('I', FALSE);
fb73857a
PP
3096 ++s;
3097 while (*s && isSPACE(*s))
3098 ++s;
3099 if (*s) {
c7030b81 3100 const char *e, *p;
0df16ed7
GS
3101 p = s;
3102 /* ignore trailing spaces (possibly followed by other switches) */
3103 do {
3104 for (e = p; *e && !isSPACE(*e); e++) ;
3105 p = e;
3106 while (isSPACE(*p))
3107 p++;
3108 } while (*p && *p != '-');
55b4bc1c 3109 incpush(s, e-s,
e28f3139 3110 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3111 s = p;
3112 if (*s == '-')
3113 s++;
79072805
LW
3114 }
3115 else
a67e862a 3116 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3117 return s;
79072805 3118 case 'l':
3280af22 3119 PL_minus_l = TRUE;
79072805 3120 s++;
7889fe52
NIS
3121 if (PL_ors_sv) {
3122 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3123 PL_ors_sv = NULL;
7889fe52 3124 }
79072805 3125 if (isDIGIT(*s)) {
53305cf1 3126 I32 flags = 0;
a3b680e6 3127 STRLEN numlen;
396482e1 3128 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3129 numlen = 3 + (*s == '0');
3130 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3131 s += numlen;
3132 }
3133 else {
8bfdd7d9 3134 if (RsPARA(PL_rs)) {
396482e1 3135 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3136 }
3137 else {
8bfdd7d9 3138 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3139 }
79072805
LW
3140 }
3141 return s;
1a30305b 3142 case 'M':
f20b2998 3143 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3144 /* FALL THROUGH */
3145 case 'm':
f20b2998 3146 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3147 if (*++s) {
c7030b81 3148 const char *start;
b64cb68c 3149 const char *end;
11343788 3150 SV *sv;
e1ec3a88 3151 const char *use = "use ";
0544e6df 3152 bool colon = FALSE;
a5f75d66 3153 /* -M-foo == 'no foo' */
d0043bd1
NC
3154 /* Leading space on " no " is deliberate, to make both
3155 possibilities the same length. */
3156 if (*s == '-') { use = " no "; ++s; }
3157 sv = newSVpvn(use,4);
a5f75d66 3158 start = s;
1a30305b 3159 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3160 while(isALNUM(*s) || *s==':') {
3161 if( *s++ == ':' ) {
3162 if( *s == ':' )
3163 s++;
3164 else
3165 colon = TRUE;
3166 }
3167 }
3168 if (s == start)
3169 Perl_croak(aTHX_ "Module name required with -%c option",
3170 option);
3171 if (colon)
3172 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3173 "contains single ':'",
63da6837 3174 (int)(s - start), start, option);
b64cb68c 3175 end = s + strlen(s);
c07a80fd 3176 if (*s != '=') {
b64cb68c 3177 sv_catpvn(sv, start, end - start);
0544e6df 3178 if (option == 'm') {
c07a80fd 3179 if (*s != '\0')
cea2e8a9 3180 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3181 sv_catpvs( sv, " ()");
c07a80fd
PP
3182 }
3183 } else {
11343788 3184 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3185 /* Use NUL as q''-delimiter. */
3186 sv_catpvs(sv, " split(/,/,q\0");
3187 ++s;
3188 sv_catpvn(sv, s, end - s);
396482e1 3189 sv_catpvs(sv, "\0)");
c07a80fd 3190 }
b64cb68c 3191 s = end;
29a861e7 3192 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3193 }
3194 else
0544e6df 3195 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3196 return s;
79072805 3197 case 'n':
3280af22 3198 PL_minus_n = TRUE;
79072805
LW
3199 s++;
3200 return s;
3201 case 'p':
3280af22 3202 PL_minus_p = TRUE;
79072805
LW
3203 s++;
3204 return s;
3205 case 's':
f20b2998 3206 forbid_setid('s', FALSE);
3280af22 3207 PL_doswitches = TRUE;
79072805
LW
3208 s++;
3209 return s;
6537fe72
MS
3210 case 't':
3211 if (!PL_tainting)
22f7c9c9 3212 TOO_LATE_FOR('t');
6537fe72
MS
3213 s++;
3214 return s;
463ee0b2 3215 case 'T':
3280af22 3216 if (!PL_tainting)
22f7c9c9 3217 TOO_LATE_FOR('T');
463ee0b2
LW
3218 s++;
3219 return s;
79072805 3220 case 'u':
3280af22 3221 PL_do_undump = TRUE;
79072805
LW
3222 s++;
3223 return s;
3224 case 'U':
3280af22 3225 PL_unsafe = TRUE;
79072805
LW
3226 s++;
3227 return s;
3228 case 'v':
d7aa5382 3229 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3230 upg_version(PL_patchlevel, TRUE);
8e9464f1 3231#if !defined(DGUX)
46807d8e
YO
3232 {
3233 SV* level= vstringify(PL_patchlevel);
3234#ifdef PERL_PATCHNUM
23d483e2
NC
3235# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3236 SV *num = newSVpvs(PERL_PATCHNUM "*");
3237# else
3238 SV *num = newSVpvs(PERL_PATCHNUM);
3239# endif
46807d8e
YO
3240
3241 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3242 SvREFCNT_dec(level);
3243 level= num;
3244 } else {
d0a9311f 3245 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3246 SvREFCNT_dec(num);
3247 }
3248 #endif
3249 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3250 "\nThis is perl " STRINGIFY(PERL_REVISION)
3251 ", version " STRINGIFY(PERL_VERSION)
3252 ", subversion " STRINGIFY(PERL_SUBVERSION)
3253 " (%"SVf") built for " ARCHNAME, level
3254 );
46807d8e
YO
3255 SvREFCNT_dec(level);
3256 }
8e9464f1
JH
3257#else /* DGUX */
3258/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3259 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3260 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3261 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3262 PerlIO_printf(PerlIO_stdout(),
3263 Perl_form(aTHX_ " built under %s at %s %s\n",
3264 OSNAME, __DATE__, __TIME__));
3265 PerlIO_printf(PerlIO_stdout(),
3266 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3267 OSVERS));
8e9464f1 3268#endif /* !DGUX */
fb73857a
PP
3269#if defined(LOCAL_PATCH_COUNT)
3270 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3271 PerlIO_printf(PerlIO_stdout(),
3272 "\n(with %d registered patch%s, "
3273 "see perl -V for more detail)",
bb7a0f54 3274 LOCAL_PATCH_COUNT,
b0e47665 3275 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3276#endif
1a30305b 3277
b0e47665 3278 PerlIO_printf(PerlIO_stdout(),
32709fdf 3279 "\n\nCopyright 1987-2010, Larry Wall\n");
79072805 3280#ifdef MSDOS
b0e47665
GS
3281 PerlIO_printf(PerlIO_stdout(),
3282 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3283#endif
3284#ifdef DJGPP
b0e47665
GS
3285 PerlIO_printf(PerlIO_stdout(),
3286 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3287 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3288#endif
79072805 3289#ifdef OS2
b0e47665
GS
3290 PerlIO_printf(PerlIO_stdout(),
3291 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3292 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3293#endif
79072805 3294#ifdef atarist
b0e47665
GS
3295 PerlIO_printf(PerlIO_stdout(),
3296 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3297#endif
a3f9223b 3298#ifdef __BEOS__
b0e47665
GS
3299 PerlIO_printf(PerlIO_stdout(),
3300 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3301#endif
1d84e8df 3302#ifdef MPE
b0e47665 3303 PerlIO_printf(PerlIO_stdout(),
e583a879 3304 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3305#endif
9d116dd7 3306#ifdef OEMVS
b0e47665
GS
3307 PerlIO_printf(PerlIO_stdout(),
3308 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3309#endif
495c5fdc 3310#ifdef __VOS__
b0e47665 3311 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3312 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3313#endif
092bebab 3314#ifdef __OPEN_VM
b0e47665
GS
3315 PerlIO_printf(PerlIO_stdout(),
3316 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3317#endif
a1a0e61e 3318#ifdef POSIX_BC
b0e47665
GS
3319 PerlIO_printf(PerlIO_stdout(),
3320 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3321#endif
f83d2536 3322#ifdef EPOC
b0e47665 3323 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3324 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3325#endif
e1caacb4 3326#ifdef UNDER_CE
b475b3e6
JH
3327 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3328 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3329 wce_hitreturn();
3330#endif
a0fd4948 3331#ifdef __SYMBIAN32__
27da23d5
JH
3332 PerlIO_printf(PerlIO_stdout(),
3333 "Symbian port by Nokia, 2004-2005\n");
3334#endif
baed7233
DL
3335#ifdef BINARY_BUILD_NOTICE
3336 BINARY_BUILD_NOTICE;
3337#endif
b0e47665
GS
3338 PerlIO_printf(PerlIO_stdout(),
3339 "\n\
79072805 3340Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3341GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3342Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3343this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3344Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3345 my_exit(0);
79072805 3346 case 'w':
b2e5e6ba 3347 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3348 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3349 }
599cee73
PM
3350 s++;
3351 return s;
3352 case 'W':
ac27b0f5 3353 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3354 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3355 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3356 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3357 s++;
3358 return s;
3359 case 'X':
ac27b0f5 3360 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3361 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3362 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3363 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3364 s++;
3365 return s;
a0d0e21e 3366 case '*':
79072805 3367 case ' ':
d3133c89
NC
3368 while( *s == ' ' )
3369 ++s;
3370 if (s[0] == '-') /* Additional switches on #! line. */
3371 return s+1;
79072805 3372 break;
a0d0e21e 3373 case '-':
79072805 3374 case 0:
51882d45 3375#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3376 case '\r':
3377#endif
79072805
LW
3378 case '\n':
3379 case '\t':
3380 break;
aa689395
PP
3381#ifdef ALTERNATE_SHEBANG
3382 case 'S': /* OS/2 needs -S on "extproc" line. */
3383 break;
3384#endif
79072805 3385 default:
cea2e8a9 3386 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3387 }
bd61b366 3388 return NULL;
79072805
LW
3389}
3390
3391/* compliments of Tom Christiansen */
3392
3393/* unexec() can be found in the Gnu emacs distribution */
ee580363 3394/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3395
3396void
864dbfa3 3397Perl_my_unexec(pTHX)
79072805 3398{
b37c2d43 3399 PERL_UNUSED_CONTEXT;
79072805 3400#ifdef UNEXEC
b37c2d43
AL
3401 SV * prog = newSVpv(BIN_EXP, 0);
3402 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3403 int status = 1;
79072805
LW
3404 extern int etext;
3405
396482e1 3406 sv_catpvs(prog, "/perl");
396482e1 3407 sv_catpvs(file, ".perldump");
79072805 3408
ee580363
GS
3409 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3410 /* unexec prints msg to stderr in case of failure */
6ad3d225 3411 PerlProc_exit(status);
79072805 3412#else
a5f75d66
AD
3413# ifdef VMS
3414# include <lib$routines.h>
3415 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3416# elif defined(WIN32) || defined(__CYGWIN__)
3417 Perl_croak(aTHX_ "dump is not supported");
aa689395 3418# else
79072805 3419 ABORT(); /* for use with undump */
aa689395 3420# endif
a5f75d66 3421#endif
79072805
LW
3422}
3423
cb68f92d
GS
3424/* initialize curinterp */
3425STATIC void
cea2e8a9 3426S_init_interp(pTHX)
cb68f92d 3427{
97aff369 3428 dVAR;
acfe0abc
GS
3429#ifdef MULTIPLICITY
3430# define PERLVAR(var,type)
3431# define PERLVARA(var,n,type)
3432# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3433# define PERLVARI(var,type,init) aTHX->var = init;
3434# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3435# else
acfe0abc
GS
3436# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3437# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3438# endif
acfe0abc 3439# include "intrpvar.h"
acfe0abc
GS
3440# undef PERLVAR
3441# undef PERLVARA
3442# undef PERLVARI
3443# undef PERLVARIC
3444#else
3445# define PERLVAR(var,type)
3446# define PERLVARA(var,n,type)
3447# define PERLVARI(var,type,init) PL_##var = init;
3448# define PERLVARIC(var,type,init) PL_##var = init;
3449# include "intrpvar.h"
acfe0abc
GS
3450# undef PERLVAR
3451# undef PERLVARA
3452# undef PERLVARI
3453# undef PERLVARIC
cb68f92d
GS
3454#endif
3455
46ab3289
NC
3456 /* As these are inside a structure, PERLVARI isn't capable of initialising
3457 them */
6c3f0a89
NC
3458 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3459 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3460}
3461
76e3520e 3462STATIC void
cea2e8a9 3463S_init_main_stash(pTHX)
79072805 3464{
97aff369 3465 dVAR;
463ee0b2 3466 GV *gv;
6e72f9df 3467
3280af22 3468 PL_curstash = PL_defstash = newHV();
23579a14
NC
3469 /* We know that the string "main" will be in the global shared string
3470 table, so it's a small saving to use it rather than allocate another
3471 8 bytes. */
18916d0d 3472 PL_curstname = newSVpvs_share("main");
fafc274c 3473 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3474 /* If we hadn't caused another reference to "main" to be in the shared
3475 string table above, then it would be worth reordering these two,
3476 because otherwise all we do is delete "main" from it as a consequence
3477 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3478 SvREFCNT_dec(GvHV(gv));
23579a14 3479 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3480 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3481 SvREADONLY_on(gv);
fafc274c
NC
3482 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3483 SVt_PVAV)));
5a5094bd 3484 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3485 GvMULTI_on(PL_incgv);
fafc274c 3486 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3487 GvMULTI_on(PL_hintgv);
fafc274c 3488 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3489 SvREFCNT_inc_simple_void(PL_defgv);
fafc274c 3490 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5a5094bd 3491 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3492 GvMULTI_on(PL_errgv);
fafc274c 3493 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22 3494 GvMULTI_on(PL_replgv);
cea2e8a9 3495 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC