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4b88f280 1#line 2 "perl.c"
a0d0e21e
LW
2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
32709fdf
A
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 by Larry Wall
6 * and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of EƤrendil
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
378cc40b 27#include "EXTERN.h"
864dbfa3 28#define PERL_IN_PERL_C
378cc40b 29#include "perl.h"
e3321bb0 30#include "patchlevel.h" /* for local_patches */
4a5df386 31#include "XSUB.h"
378cc40b 32
011f1a1a
JH
33#ifdef NETWARE
34#include "nwutil.h"
011f1a1a
JH
35#endif
36
df5cef82 37/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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);
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DM
112 MUTEX_INIT(&PL_my_ctx_mutex);
113# endif
e6827a76 114 }
c0bce9aa
NC
115#if defined(USE_ITHREADS)
116 else
117#else
118 /* This always happens for non-ithreads */
119#endif
120 {
e6827a76
NC
121 PERL_SET_THX(my_perl);
122 }
123}
06d86050 124
cbec8ebe
DM
125
126/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
127
128void
129Perl_sys_init(int* argc, char*** argv)
130{
4fc0badb 131 dVAR;
7918f24d
NC
132
133 PERL_ARGS_ASSERT_SYS_INIT;
134
cbec8ebe
DM
135 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
136 PERL_UNUSED_ARG(argv);
137 PERL_SYS_INIT_BODY(argc, argv);
138}
139
140void
141Perl_sys_init3(int* argc, char*** argv, char*** env)
142{
4fc0badb 143 dVAR;
7918f24d
NC
144
145 PERL_ARGS_ASSERT_SYS_INIT3;
146
cbec8ebe
DM
147 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
148 PERL_UNUSED_ARG(argv);
149 PERL_UNUSED_ARG(env);
150 PERL_SYS_INIT3_BODY(argc, argv, env);
151}
152
153void
d0820ef1 154Perl_sys_term()
cbec8ebe 155{
4fc0badb 156 dVAR;
bf81751b
DM
157 if (!PL_veto_cleanup) {
158 PERL_SYS_TERM_BODY();
159 }
cbec8ebe
DM
160}
161
162
32e30700
GS
163#ifdef PERL_IMPLICIT_SYS
164PerlInterpreter *
7766f137
GS
165perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
166 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
167 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
168 struct IPerlDir* ipD, struct IPerlSock* ipS,
169 struct IPerlProc* ipP)
170{
171 PerlInterpreter *my_perl;
7918f24d
NC
172
173 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
174
9f653bb5 175 /* Newx() needs interpreter, so call malloc() instead */
32e30700 176 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 177 S_init_tls_and_interp(my_perl);
32e30700
GS
178 Zero(my_perl, 1, PerlInterpreter);
179 PL_Mem = ipM;
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
62375a60
NIS
577 if (CALL_FPTR(PL_threadhook)(aTHX)) {
578 /* Threads hook has vetoed further cleanup */
c301d606 579 PL_veto_cleanup = TRUE;
37038d91 580 return STATUS_EXIT;
62375a60
NIS
581 }
582
2aa47728
NC
583#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
584 if (destruct_level != 0) {
585 /* Fork here to create a child. Our child's job is to preserve the
586 state of scalars prior to destruction, so that we can instruct it
587 to dump any scalars that we later find have leaked.
588 There's no subtlety in this code - it assumes POSIX, and it doesn't
589 fail gracefully */
590 int fd[2];
591
592 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
593 perror("Debug leaking scalars socketpair failed");
594 abort();
595 }
596
597 child = fork();
598 if(child == -1) {
599 perror("Debug leaking scalars fork failed");
600 abort();
601 }
602 if (!child) {
603 /* We are the child */
3125a5a4
NC
604 const int sock = fd[1];
605 const int debug_fd = PerlIO_fileno(Perl_debug_log);
606 int f;
808ad2d0
NC
607 const char *where;
608 /* Our success message is an integer 0, and a char 0 */
b61433a9 609 static const char success[sizeof(int) + 1] = {0};
3125a5a4 610
2aa47728 611 close(fd[0]);
2aa47728 612
3125a5a4
NC
613 /* We need to close all other file descriptors otherwise we end up
614 with interesting hangs, where the parent closes its end of a
615 pipe, and sits waiting for (another) child to terminate. Only
616 that child never terminates, because it never gets EOF, because
bf357333
NC
617 we also have the far end of the pipe open. We even need to
618 close the debugging fd, because sometimes it happens to be one
619 end of a pipe, and a process is waiting on the other end for
620 EOF. Normally it would be closed at some point earlier in
621 destruction, but if we happen to cause the pipe to remain open,
622 EOF never occurs, and we get an infinite hang. Hence all the
623 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
624
625 f = sysconf(_SC_OPEN_MAX);
626 if(f < 0) {
808ad2d0
NC
627 where = "sysconf failed";
628 goto abort;
3125a5a4
NC
629 }
630 while (f--) {
631 if (f == sock)
632 continue;
3125a5a4
NC
633 close(f);
634 }
635
2aa47728
NC
636 while (1) {
637 SV *target;
bf357333
NC
638 union control_un control;
639 struct msghdr msg;
640 struct iovec vec[1];
641 struct cmsghdr *cmptr;
642 ssize_t got;
643 int got_fd;
644
645 msg.msg_control = control.control;
646 msg.msg_controllen = sizeof(control.control);
647 /* We're a connected socket so we don't need a source */
648 msg.msg_name = NULL;
649 msg.msg_namelen = 0;
650 msg.msg_iov = vec;
651 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
652
653 vec[0].iov_base = (void*)&target;
654 vec[0].iov_len = sizeof(target);
655
656 got = recvmsg(sock, &msg, 0);
2aa47728
NC
657
658 if(got == 0)
659 break;
660 if(got < 0) {
808ad2d0
NC
661 where = "recv failed";
662 goto abort;
2aa47728
NC
663 }
664 if(got < sizeof(target)) {
808ad2d0
NC
665 where = "short recv";
666 goto abort;
2aa47728 667 }
bf357333 668
808ad2d0
NC
669 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
670 where = "no cmsg";
671 goto abort;
672 }
673 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
674 where = "wrong cmsg_len";
675 goto abort;
676 }
677 if(cmptr->cmsg_level != SOL_SOCKET) {
678 where = "wrong cmsg_level";
679 goto abort;
680 }
681 if(cmptr->cmsg_type != SCM_RIGHTS) {
682 where = "wrong cmsg_type";
683 goto abort;
684 }
bf357333
NC
685
686 got_fd = *(int*)CMSG_DATA(cmptr);
687 /* For our last little bit of trickery, put the file descriptor
688 back into Perl_debug_log, as if we never actually closed it
689 */
808ad2d0
NC
690 if(got_fd != debug_fd) {
691 if (dup2(got_fd, debug_fd) == -1) {
692 where = "dup2";
693 goto abort;
694 }
695 }
2aa47728 696 sv_dump(target);
bf357333 697
2aa47728
NC
698 PerlIO_flush(Perl_debug_log);
699
808ad2d0 700 got = write(sock, &success, sizeof(success));
2aa47728
NC
701
702 if(got < 0) {
808ad2d0
NC
703 where = "write failed";
704 goto abort;
2aa47728 705 }
808ad2d0
NC
706 if(got < sizeof(success)) {
707 where = "short write";
708 goto abort;
2aa47728
NC
709 }
710 }
711 _exit(0);
808ad2d0
NC
712 abort:
713 {
714 int send_errno = errno;
715 unsigned char length = (unsigned char) strlen(where);
716 struct iovec failure[3] = {
717 {(void*)&send_errno, sizeof(send_errno)},
718 {&length, 1},
719 {(void*)where, length}
720 };
721 int got = writev(sock, failure, 3);
722 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
723 in the parent if we try to read from the socketpair after the
724 child has exited, even if there was data to read.
725 So sleep a bit to give the parent a fighting chance of
726 reading the data. */
727 sleep(2);
728 _exit((got == -1) ? errno : 0);
729 }
bf357333 730 /* End of child. */
2aa47728 731 }
41e4abd8 732 PL_dumper_fd = fd[0];
2aa47728
NC
733 close(fd[1]);
734 }
735#endif
736
ff0cee69
PP
737 /* We must account for everything. */
738
739 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
740 /* Do this now, because destroying ops can cause new SVs to be generated
741 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
742 PL_curcop to point to a valid op from which the filename structure
743 member is copied. */
744 PL_curcop = &PL_compiling;
3280af22 745 if (PL_main_root) {
4e380990
DM
746 /* ensure comppad/curpad to refer to main's pad */
747 if (CvPADLIST(PL_main_cv)) {
748 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
749 }
3280af22 750 op_free(PL_main_root);
5f66b61c 751 PL_main_root = NULL;
a0d0e21e 752 }
5f66b61c 753 PL_main_start = NULL;
3280af22 754 SvREFCNT_dec(PL_main_cv);
601f1833 755 PL_main_cv = NULL;
24d3c518 756 PL_dirty = TRUE;
ff0cee69 757
13621cfb
NIS
758 /* Tell PerlIO we are about to tear things apart in case
759 we have layers which are using resources that should
760 be cleaned up now.
761 */
762
763 PerlIO_destruct(aTHX);
764
3280af22 765 if (PL_sv_objcount) {
a0d0e21e
LW
766 /*
767 * Try to destruct global references. We do this first so that the
768 * destructors and destructees still exist. Some sv's might remain.
769 * Non-referenced objects are on their own.
770 */
a0d0e21e 771 sv_clean_objs();
bf9cdc68 772 PL_sv_objcount = 0;
a0de6cf5 773 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 774 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
775 }
776
5cd24f17 777 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 778 SvREFCNT_dec(PL_warnhook);
a0714e2c 779 PL_warnhook = NULL;
3280af22 780 SvREFCNT_dec(PL_diehook);
a0714e2c 781 PL_diehook = NULL;
5cd24f17 782
4b556e6c 783 /* call exit list functions */
3280af22 784 while (PL_exitlistlen-- > 0)
acfe0abc 785 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 786
3280af22 787 Safefree(PL_exitlist);
4b556e6c 788
1c4916e5
CB
789 PL_exitlist = NULL;
790 PL_exitlistlen = 0;
791
a3e6e81e
NC
792 SvREFCNT_dec(PL_registered_mros);
793
551a8b83 794 /* jettison our possibly duplicated environment */
4b647fb0
DM
795 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
796 * so we certainly shouldn't free it here
797 */
2f42fcb0 798#ifndef PERL_MICRO
4b647fb0 799#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 800 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
801#ifdef USE_ITHREADS
802 /* only main thread can free environ[0] contents */
803 && PL_curinterp == aTHX
804#endif
805 )
806 {
551a8b83
JH
807 I32 i;
808
809 for (i = 0; environ[i]; i++)
4b420006 810 safesysfree(environ[i]);
0631ea03 811
4b420006
JH
812 /* Must use safesysfree() when working with environ. */
813 safesysfree(environ);
551a8b83
JH
814
815 environ = PL_origenviron;
816 }
817#endif
2f42fcb0 818#endif /* !PERL_MICRO */
551a8b83 819
30985c42
JH
820 if (destruct_level == 0) {
821
822 DEBUG_P(debprofdump());
823
824#if defined(PERLIO_LAYERS)
825 /* No more IO - including error messages ! */
826 PerlIO_cleanup(aTHX);
827#endif
828
829 CopFILE_free(&PL_compiling);
830 CopSTASH_free(&PL_compiling);
831
832 /* The exit() function will do everything that needs doing. */
833 return STATUS_EXIT;
834 }
835
804ffa60 836 /* reset so print() ends up where we expect */
a0714e2c 837 setdefout(NULL);
804ffa60 838
5f8cb046
DM
839#ifdef USE_ITHREADS
840 /* the syntax tree is shared between clones
841 * so op_free(PL_main_root) only ReREFCNT_dec's
842 * REGEXPs in the parent interpreter
843 * we need to manually ReREFCNT_dec for the clones
844 */
5f8cb046 845 SvREFCNT_dec(PL_regex_padav);
7d49f689 846 PL_regex_padav = NULL;
5f8cb046
DM
847 PL_regex_pad = NULL;
848#endif
849
ad64d0ec 850 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
851 PL_stashcache = NULL;
852
5f05dabc
PP
853 /* loosen bonds of global variables */
854
2f9285f8
DM
855 /* XXX can PL_parser still be non-null here? */
856 if(PL_parser && PL_parser->rsfp) {
857 (void)PerlIO_close(PL_parser->rsfp);
858 PL_parser->rsfp = NULL;
8ebc5c01
PP
859 }
860
84386e14
RGS
861 if (PL_minus_F) {
862 Safefree(PL_splitstr);
863 PL_splitstr = NULL;
864 }
865
8ebc5c01 866 /* switches */
3280af22
NIS
867 PL_minus_n = FALSE;
868 PL_minus_p = FALSE;
869 PL_minus_l = FALSE;
870 PL_minus_a = FALSE;
871 PL_minus_F = FALSE;
872 PL_doswitches = FALSE;
599cee73 873 PL_dowarn = G_WARN_OFF;
3280af22
NIS
874 PL_doextract = FALSE;
875 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
876 PL_unsafe = FALSE;
877
878 Safefree(PL_inplace);
bd61b366 879 PL_inplace = NULL;
a7cb1f99 880 SvREFCNT_dec(PL_patchlevel);
1e8125c6 881 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
882
883 if (PL_e_script) {
884 SvREFCNT_dec(PL_e_script);
a0714e2c 885 PL_e_script = NULL;
8ebc5c01
PP
886 }
887
bf9cdc68
RG
888 PL_perldb = 0;
889
8ebc5c01
PP
890 /* magical thingies */
891
e23d9e2f
CS
892 SvREFCNT_dec(PL_ofsgv); /* *, */
893 PL_ofsgv = NULL;
5f05dabc 894
7889fe52 895 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 896 PL_ors_sv = NULL;
8ebc5c01 897
3280af22 898 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 899 PL_rs = NULL;
dc92893f 900
d33b2eba 901 Safefree(PL_osname); /* $^O */
bd61b366 902 PL_osname = NULL;
5f05dabc 903
3280af22 904 SvREFCNT_dec(PL_statname);
a0714e2c
SS
905 PL_statname = NULL;
906 PL_statgv = NULL;
5f05dabc 907
8ebc5c01
PP
908 /* defgv, aka *_ should be taken care of elsewhere */
909
8ebc5c01 910 /* clean up after study() */
3280af22 911 SvREFCNT_dec(PL_lastscream);
a0714e2c 912 PL_lastscream = NULL;
3280af22
NIS
913 Safefree(PL_screamfirst);
914 PL_screamfirst = 0;
915 Safefree(PL_screamnext);
916 PL_screamnext = 0;
8ebc5c01 917
7d5ea4e7
GS
918 /* float buffer */
919 Safefree(PL_efloatbuf);
bd61b366 920 PL_efloatbuf = NULL;
7d5ea4e7
GS
921 PL_efloatsize = 0;
922
8ebc5c01 923 /* startup and shutdown function lists */
3280af22 924 SvREFCNT_dec(PL_beginav);
5a837c8f 925 SvREFCNT_dec(PL_beginav_save);
3280af22 926 SvREFCNT_dec(PL_endav);
7d30b5c4 927 SvREFCNT_dec(PL_checkav);
ece599bd 928 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
929 SvREFCNT_dec(PL_unitcheckav);
930 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 931 SvREFCNT_dec(PL_initav);
7d49f689
NC
932 PL_beginav = NULL;
933 PL_beginav_save = NULL;
934 PL_endav = NULL;
935 PL_checkav = NULL;
936 PL_checkav_save = NULL;
3c10abe3
AG
937 PL_unitcheckav = NULL;
938 PL_unitcheckav_save = NULL;
7d49f689 939 PL_initav = NULL;
5618dfe8 940
8ebc5c01 941 /* shortcuts just get cleared */
a0714e2c
SS
942 PL_envgv = NULL;
943 PL_incgv = NULL;
944 PL_hintgv = NULL;
945 PL_errgv = NULL;
946 PL_argvgv = NULL;
947 PL_argvoutgv = NULL;
948 PL_stdingv = NULL;
949 PL_stderrgv = NULL;
950 PL_last_in_gv = NULL;
951 PL_replgv = NULL;
952 PL_DBgv = NULL;
953 PL_DBline = NULL;
954 PL_DBsub = NULL;
955 PL_DBsingle = NULL;
956 PL_DBtrace = NULL;
957 PL_DBsignal = NULL;
601f1833 958 PL_DBcv = NULL;
7d49f689 959 PL_dbargs = NULL;
5c284bb0 960 PL_debstash = NULL;
8ebc5c01 961
7a1c5554 962 SvREFCNT_dec(PL_argvout_stack);
7d49f689 963 PL_argvout_stack = NULL;
8ebc5c01 964
5c831c24 965 SvREFCNT_dec(PL_modglobal);
5c284bb0 966 PL_modglobal = NULL;
5c831c24 967 SvREFCNT_dec(PL_preambleav);
7d49f689 968 PL_preambleav = NULL;
5c831c24 969 SvREFCNT_dec(PL_subname);
a0714e2c 970 PL_subname = NULL;
ca0c25f6 971#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 972 SvREFCNT_dec(PL_pidstatus);
5c284bb0 973 PL_pidstatus = NULL;
ca0c25f6 974#endif
5c831c24 975 SvREFCNT_dec(PL_toptarget);
a0714e2c 976 PL_toptarget = NULL;
5c831c24 977 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
978 PL_bodytarget = NULL;
979 PL_formtarget = NULL;
5c831c24 980
d33b2eba 981 /* free locale stuff */
b9582b6a 982#ifdef USE_LOCALE_COLLATE
d33b2eba 983 Safefree(PL_collation_name);
bd61b366 984 PL_collation_name = NULL;
b9582b6a 985#endif
d33b2eba 986
b9582b6a 987#ifdef USE_LOCALE_NUMERIC
d33b2eba 988 Safefree(PL_numeric_name);
bd61b366 989 PL_numeric_name = NULL;
a453c169 990 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 991 PL_numeric_radix_sv = NULL;
b9582b6a 992#endif
d33b2eba 993
5c831c24
GS
994 /* clear utf8 character classes */
995 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
996 SvREFCNT_dec(PL_utf8_ascii);
997 SvREFCNT_dec(PL_utf8_alpha);
998 SvREFCNT_dec(PL_utf8_space);
999 SvREFCNT_dec(PL_utf8_cntrl);
1000 SvREFCNT_dec(PL_utf8_graph);
1001 SvREFCNT_dec(PL_utf8_digit);
1002 SvREFCNT_dec(PL_utf8_upper);
1003 SvREFCNT_dec(PL_utf8_lower);
1004 SvREFCNT_dec(PL_utf8_print);
1005 SvREFCNT_dec(PL_utf8_punct);
1006 SvREFCNT_dec(PL_utf8_xdigit);
1007 SvREFCNT_dec(PL_utf8_mark);
1008 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1009 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1010 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1011 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1012 SvREFCNT_dec(PL_utf8_idstart);
1013 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c 1014 PL_utf8_alnum = NULL;
a0714e2c
SS
1015 PL_utf8_ascii = NULL;
1016 PL_utf8_alpha = NULL;
1017 PL_utf8_space = NULL;
1018 PL_utf8_cntrl = NULL;
1019 PL_utf8_graph = NULL;
1020 PL_utf8_digit = NULL;
1021 PL_utf8_upper = NULL;
1022 PL_utf8_lower = NULL;
1023 PL_utf8_print = NULL;
1024 PL_utf8_punct = NULL;
1025 PL_utf8_xdigit = NULL;
1026 PL_utf8_mark = NULL;
1027 PL_utf8_toupper = NULL;
1028 PL_utf8_totitle = NULL;
1029 PL_utf8_tolower = NULL;
1030 PL_utf8_tofold = NULL;
1031 PL_utf8_idstart = NULL;
1032 PL_utf8_idcont = NULL;
5c831c24 1033
971a9dd3 1034 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1035 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1036 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1037 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1038 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1039 CopFILE_free(&PL_compiling);
1040 CopSTASH_free(&PL_compiling);
5c831c24 1041
a0d0e21e 1042 /* Prepare to destruct main symbol table. */
5f05dabc 1043
3280af22
NIS
1044 hv = PL_defstash;
1045 PL_defstash = 0;
a0d0e21e 1046 SvREFCNT_dec(hv);
5c831c24 1047 SvREFCNT_dec(PL_curstname);
a0714e2c 1048 PL_curstname = NULL;
a0d0e21e 1049
5a844595
GS
1050 /* clear queued errors */
1051 SvREFCNT_dec(PL_errors);
a0714e2c 1052 PL_errors = NULL;
5a844595 1053
dd69841b
BB
1054 SvREFCNT_dec(PL_isarev);
1055
a0d0e21e 1056 FREETMPS;
9b387841 1057 if (destruct_level >= 2) {
3280af22 1058 if (PL_scopestack_ix != 0)
9b387841
NC
1059 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1060 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1061 (long)PL_scopestack_ix);
3280af22 1062 if (PL_savestack_ix != 0)
9b387841
NC
1063 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1064 "Unbalanced saves: %ld more saves than restores\n",
1065 (long)PL_savestack_ix);
3280af22 1066 if (PL_tmps_floor != -1)
9b387841
NC
1067 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1068 (long)PL_tmps_floor + 1);
a0d0e21e 1069 if (cxstack_ix != -1)
9b387841
NC
1070 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1071 (long)cxstack_ix + 1);
a0d0e21e 1072 }
8990e307
LW
1073
1074 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1075
1076 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1077 while (sv_clean_all() > 2)
5226ed68
JH
1078 ;
1079
d4777f27
GS
1080 AvREAL_off(PL_fdpid); /* no surviving entries */
1081 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1082 PL_fdpid = NULL;
d33b2eba 1083
6c644e78
GS
1084#ifdef HAVE_INTERP_INTERN
1085 sys_intern_clear();
1086#endif
1087
6e72f9df
PP
1088 /* Destruct the global string table. */
1089 {
1090 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1091 * so that sv_free() won't fail on them.
80459961
NC
1092 * Now that the global string table is using a single hunk of memory
1093 * for both HE and HEK, we either need to explicitly unshare it the
1094 * correct way, or actually free things here.
6e72f9df 1095 */
80459961
NC
1096 I32 riter = 0;
1097 const I32 max = HvMAX(PL_strtab);
c4420975 1098 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1099 HE *hent = array[0];
1100
6e72f9df 1101 for (;;) {
0453d815 1102 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1103 HE * const next = HeNEXT(hent);
9014280d 1104 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1105 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1106 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1107 Safefree(hent);
1108 hent = next;
6e72f9df
PP
1109 }
1110 if (!hent) {
1111 if (++riter > max)
1112 break;
1113 hent = array[riter];
1114 }
1115 }
80459961
NC
1116
1117 Safefree(array);
1118 HvARRAY(PL_strtab) = 0;
1119 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1120 }
3280af22 1121 SvREFCNT_dec(PL_strtab);
6e72f9df 1122
e652bb2f 1123#ifdef USE_ITHREADS
c21d1a0f 1124 /* free the pointer tables used for cloning */
a0739874 1125 ptr_table_free(PL_ptr_table);
bf9cdc68 1126 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1127#endif
a0739874 1128
d33b2eba
GS
1129 /* free special SVs */
1130
1131 SvREFCNT(&PL_sv_yes) = 0;
1132 sv_clear(&PL_sv_yes);
1133 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1134 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1135
1136 SvREFCNT(&PL_sv_no) = 0;
1137 sv_clear(&PL_sv_no);
1138 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1139 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1140
9f375a43
DM
1141 {
1142 int i;
1143 for (i=0; i<=2; i++) {
1144 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1145 sv_clear(PERL_DEBUG_PAD(i));
1146 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1147 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1148 }
1149 }
1150
0453d815 1151 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1152 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1153
eba0f806
DM
1154#ifdef DEBUG_LEAKING_SCALARS
1155 if (PL_sv_count != 0) {
1156 SV* sva;
1157 SV* sv;
1158 register SV* svend;
1159
ad64d0ec 1160 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1161 svend = &sva[SvREFCNT(sva)];
1162 for (sv = sva + 1; sv < svend; ++sv) {
1163 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1164 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1165 " flags=0x%"UVxf
fd0854ff 1166 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1167 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1168 "serial %"UVuf"\n",
574b8821
NC
1169 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1170 pTHX__VALUE,
fd0854ff
DM
1171 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1172 sv->sv_debug_line,
1173 sv->sv_debug_inpad ? "for" : "by",
1174 sv->sv_debug_optype ?
1175 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1176 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1177 sv->sv_debug_serial
fd0854ff 1178 );
2aa47728 1179#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1180 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1181#endif
eba0f806
DM
1182 }
1183 }
1184 }
1185 }
2aa47728
NC
1186#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1187 {
1188 int status;
1189 fd_set rset;
1190 /* Wait for up to 4 seconds for child to terminate.
1191 This seems to be the least effort way of timing out on reaping
1192 its exit status. */
1193 struct timeval waitfor = {4, 0};
41e4abd8 1194 int sock = PL_dumper_fd;
2aa47728
NC
1195
1196 shutdown(sock, 1);
1197 FD_ZERO(&rset);
1198 FD_SET(sock, &rset);
1199 select(sock + 1, &rset, NULL, NULL, &waitfor);
1200 waitpid(child, &status, WNOHANG);
1201 close(sock);
1202 }
1203#endif
eba0f806 1204#endif
77abb4c6
NC
1205#ifdef DEBUG_LEAKING_SCALARS_ABORT
1206 if (PL_sv_count)
1207 abort();
1208#endif
bf9cdc68 1209 PL_sv_count = 0;
eba0f806 1210
f1fac472
NC
1211#ifdef PERL_DEBUG_READONLY_OPS
1212 free(PL_slabs);
1213 PL_slabs = NULL;
1214 PL_slab_count = 0;
1215#endif
eba0f806 1216
56a2bab7 1217#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1218 /* No more IO - including error messages ! */
1219 PerlIO_cleanup(aTHX);
1220#endif
1221
9f4bd222 1222 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1223 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1224 for no arg - and will try and SvREFCNT_dec it.
1225 */
1226 SvREFCNT(&PL_sv_undef) = 0;
1227 SvREADONLY_off(&PL_sv_undef);
1228
3280af22 1229 Safefree(PL_origfilename);
bd61b366 1230 PL_origfilename = NULL;
3280af22 1231 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1232 PL_reg_start_tmp = (char**)NULL;
1233 PL_reg_start_tmpl = 0;
43c5f42d 1234 Safefree(PL_reg_curpm);
82ba1be6 1235 Safefree(PL_reg_poscache);
dd28f7bb 1236 free_tied_hv_pool();
3280af22 1237 Safefree(PL_op_mask);
cf36064f 1238 Safefree(PL_psig_name);
bf9cdc68 1239 PL_psig_name = (SV**)NULL;
d525a7b2 1240 PL_psig_ptr = (SV**)NULL;
ce08f86c 1241 Safefree(PL_psig_pend);
bf9cdc68 1242 PL_psig_pend = (int*)NULL;
31c91b43
LR
1243 {
1244 /* We need to NULL PL_psig_pend first, so that
1245 signal handlers know not to use it */
1246 int *psig_save = PL_psig_pend;
1247 PL_psig_pend = (int*)NULL;
1248 Safefree(psig_save);
1249 }
a0714e2c 1250 PL_formfeed = NULL;
6e72f9df 1251 nuke_stacks();
bf9cdc68
RG
1252 PL_tainting = FALSE;
1253 PL_taint_warn = FALSE;
3280af22 1254 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1255 PL_debug = 0;
ac27b0f5 1256
a0d0e21e 1257 DEBUG_P(debprofdump());
d33b2eba 1258
e5dd39fc 1259#ifdef USE_REENTRANT_API
10bc17b6 1260 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1261#endif
1262
612f20c3
GS
1263 sv_free_arenas();
1264
5d9a96ca
DM
1265 while (PL_regmatch_slab) {
1266 regmatch_slab *s = PL_regmatch_slab;
1267 PL_regmatch_slab = PL_regmatch_slab->next;
1268 Safefree(s);
1269 }
1270
fc36a67e
PP
1271 /* As the absolutely last thing, free the non-arena SV for mess() */
1272
3280af22 1273 if (PL_mess_sv) {
f350b448
NC
1274 /* we know that type == SVt_PVMG */
1275
9c63abab 1276 /* it could have accumulated taint magic */
f350b448
NC
1277 MAGIC* mg;
1278 MAGIC* moremagic;
1279 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1280 moremagic = mg->mg_moremagic;
1281 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1282 && mg->mg_len >= 0)
1283 Safefree(mg->mg_ptr);
1284 Safefree(mg);
9c63abab 1285 }
f350b448 1286
fc36a67e 1287 /* we know that type >= SVt_PV */
8bd4d4c5 1288 SvPV_free(PL_mess_sv);
3280af22
NIS
1289 Safefree(SvANY(PL_mess_sv));
1290 Safefree(PL_mess_sv);
a0714e2c 1291 PL_mess_sv = NULL;
fc36a67e 1292 }
37038d91 1293 return STATUS_EXIT;
79072805
LW
1294}
1295
954c1994
GS
1296/*
1297=for apidoc perl_free
1298
1299Releases a Perl interpreter. See L<perlembed>.
1300
1301=cut
1302*/
1303
79072805 1304void
0cb96387 1305perl_free(pTHXx)
79072805 1306{
5174512c
NC
1307 dVAR;
1308
7918f24d
NC
1309 PERL_ARGS_ASSERT_PERL_FREE;
1310
c301d606
DM
1311 if (PL_veto_cleanup)
1312 return;
1313
7cb608b5 1314#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1315 {
1316 /*
1317 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1318 * value as we're probably hunting memory leaks then
1319 */
1320 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1321 if (!s || atoi(s) == 0) {
4fd0a9b8 1322 const U32 old_debug = PL_debug;
55ef9aae
MHM
1323 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1324 thread at thread exit. */
4fd0a9b8
NC
1325 if (DEBUG_m_TEST) {
1326 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1327 "free this thread's memory\n");
1328 PL_debug &= ~ DEBUG_m_FLAG;
1329 }
55ef9aae
MHM
1330 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1331 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1332 PL_debug = old_debug;
55ef9aae
MHM
1333 }
1334 }
7cb608b5
NC
1335#endif
1336
acfe0abc 1337#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1338# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1339 {
acfe0abc 1340# ifdef NETWARE
7af12a34 1341 void *host = nw_internal_host;
acfe0abc 1342# else
7af12a34 1343 void *host = w32_internal_host;
acfe0abc 1344# endif
7af12a34 1345 PerlMem_free(aTHXx);
acfe0abc 1346# ifdef NETWARE
7af12a34 1347 nw_delete_internal_host(host);
acfe0abc 1348# else
7af12a34 1349 win32_delete_internal_host(host);
acfe0abc 1350# endif
7af12a34 1351 }
1c0ca838
GS
1352# else
1353 PerlMem_free(aTHXx);
1354# endif
acfe0abc
GS
1355#else
1356 PerlMem_free(aTHXx);
76e3520e 1357#endif
79072805
LW
1358}
1359
b7f7fff6 1360#if defined(USE_ITHREADS)
aebd1ac7
GA
1361/* provide destructors to clean up the thread key when libperl is unloaded */
1362#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1363
826955bd 1364#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1365#pragma fini "perl_fini"
666ad1ec
GA
1366#elif defined(__sun) && !defined(__GNUC__)
1367#pragma fini (perl_fini)
aebd1ac7
GA
1368#endif
1369
0dbb1585
AL
1370static void
1371#if defined(__GNUC__)
1372__attribute__((destructor))
aebd1ac7 1373#endif
de009b76 1374perl_fini(void)
aebd1ac7 1375{
27da23d5 1376 dVAR;
c301d606 1377 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1378 FREE_THREAD_KEY;
1379}
1380
1381#endif /* WIN32 */
1382#endif /* THREADS */
1383
4b556e6c 1384void
864dbfa3 1385Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1386{
97aff369 1387 dVAR;
3280af22
NIS
1388 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1389 PL_exitlist[PL_exitlistlen].fn = fn;
1390 PL_exitlist[PL_exitlistlen].ptr = ptr;
1391 ++PL_exitlistlen;
4b556e6c
JD
1392}
1393
56cf6df8
RGS
1394#ifdef HAS_PROCSELFEXE
1395/* This is a function so that we don't hold on to MAXPATHLEN
1396 bytes of stack longer than necessary
1397 */
1398STATIC void
e1ec3a88 1399S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1400{
1401 char buf[MAXPATHLEN];
1402 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1403
1404 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1405 includes a spurious NUL which will cause $^X to fail in system
1406 or backticks (this will prevent extensions from being built and
1407 many tests from working). readlink is not meant to add a NUL.
1408 Normal readlink works fine.
1409 */
1410 if (len > 0 && buf[len-1] == '\0') {
1411 len--;
1412 }
1413
1414 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1415 returning the text "unknown" from the readlink rather than the path
1416 to the executable (or returning an error from the readlink). Any valid
1417 path has a '/' in it somewhere, so use that to validate the result.
1418 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1419 */
1420 if (len > 0 && memchr(buf, '/', len)) {
1421 sv_setpvn(sv,buf,len);
1422 }
1423 else {
1424 sv_setpv(sv,arg0);
1425 }
1426}
1427#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1428
1429STATIC void
1430S_set_caret_X(pTHX) {
97aff369 1431 dVAR;
fafc274c 1432 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1433 if (tmpgv) {
1434#ifdef HAS_PROCSELFEXE
1435 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1436#else
1437#ifdef OS2
c69033f2 1438 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1439#else
c69033f2 1440 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1441#endif
1442#endif
1443 }
1444}
1445
954c1994
GS
1446/*
1447=for apidoc perl_parse
1448
1449Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1450
1451=cut
1452*/
1453
79072805 1454int
0cb96387 1455perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1456{
27da23d5 1457 dVAR;
6224f72b 1458 I32 oldscope;
6224f72b 1459 int ret;
db36c5a1 1460 dJMPENV;
8d063cd8 1461
7918f24d
NC
1462 PERL_ARGS_ASSERT_PERL_PARSE;
1463#ifndef MULTIPLICITY
ed6c66dd 1464 PERL_UNUSED_ARG(my_perl);
7918f24d 1465#endif
9d4ba2ae 1466
b0891165
JH
1467#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1468 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1469 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1470 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1471 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1472 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1473 if (!PL_rehash_seed_set)
1474 PL_rehash_seed = get_hash_seed();
b0891165 1475 {
9d4ba2ae 1476 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1477
1b6737cc
AL
1478 if (s && (atoi(s) == 1))
1479 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1480 }
1481#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1482
3280af22 1483 PL_origargc = argc;
e2975953 1484 PL_origargv = argv;
a0d0e21e 1485
a2722ac9
GA
1486 if (PL_origalen != 0) {
1487 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1488 }
1489 else {
3cb9023d
JH
1490 /* Set PL_origalen be the sum of the contiguous argv[]
1491 * elements plus the size of the env in case that it is
e9137a8e 1492 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1493 * as the maximum modifiable length of $0. In the worst case
1494 * the area we are able to modify is limited to the size of
43c32782 1495 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1496 * --jhi */
e1ec3a88 1497 const char *s = NULL;
54bfe034 1498 int i;
1b6737cc 1499 const UV mask =
7d8e7db3 1500 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1501 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1502 const UV aligned =
43c32782
JH
1503 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1504
1505 /* See if all the arguments are contiguous in memory. Note
1506 * that 'contiguous' is a loose term because some platforms
1507 * align the argv[] and the envp[]. If the arguments look
1508 * like non-aligned, assume that they are 'strictly' or
1509 * 'traditionally' contiguous. If the arguments look like
1510 * aligned, we just check that they are within aligned
1511 * PTRSIZE bytes. As long as no system has something bizarre
1512 * like the argv[] interleaved with some other data, we are
1513 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1514 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1515 while (*s) s++;
1516 for (i = 1; i < PL_origargc; i++) {
1517 if ((PL_origargv[i] == s + 1
43c32782 1518#ifdef OS2
c8941eeb 1519 || PL_origargv[i] == s + 2
43c32782 1520#endif
c8941eeb
JH
1521 )
1522 ||
1523 (aligned &&
1524 (PL_origargv[i] > s &&
1525 PL_origargv[i] <=
1526 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1527 )
1528 {
1529 s = PL_origargv[i];
1530 while (*s) s++;
1531 }
1532 else
1533 break;
54bfe034 1534 }
54bfe034 1535 }
a4a109c2
JD
1536
1537#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1538 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1539 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1540 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1541 ||
1542 (aligned &&
1543 (PL_origenviron[0] > s &&
1544 PL_origenviron[0] <=
1545 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1546 )
1547 {
9d419b5f 1548#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1549 s = PL_origenviron[0];
1550 while (*s) s++;
1551#endif
bd61b366 1552 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1553 /* Force copy of environment. */
1554 for (i = 1; PL_origenviron[i]; i++) {
1555 if (PL_origenviron[i] == s + 1
1556 ||
1557 (aligned &&
1558 (PL_origenviron[i] > s &&
1559 PL_origenviron[i] <=
1560 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1561 )
1562 {
1563 s = PL_origenviron[i];
1564 while (*s) s++;
1565 }
1566 else
1567 break;
54bfe034 1568 }
43c32782 1569 }
54bfe034 1570 }
a4a109c2
JD
1571#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1572
2d2af554 1573 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1574 }
1575
3280af22 1576 if (PL_do_undump) {
a0d0e21e
LW
1577
1578 /* Come here if running an undumped a.out. */
1579
3280af22
NIS
1580 PL_origfilename = savepv(argv[0]);
1581 PL_do_undump = FALSE;
a0d0e21e 1582 cxstack_ix = -1; /* start label stack again */
748a9306 1583 init_ids();
b7975bdd
NC
1584 assert (!PL_tainted);
1585 TAINT;
1586 S_set_caret_X(aTHX);
1587 TAINT_NOT;
a0d0e21e
LW
1588 init_postdump_symbols(argc,argv,env);
1589 return 0;
1590 }
1591
3280af22 1592 if (PL_main_root) {
3280af22 1593 op_free(PL_main_root);
5f66b61c 1594 PL_main_root = NULL;
ff0cee69 1595 }
5f66b61c 1596 PL_main_start = NULL;
3280af22 1597 SvREFCNT_dec(PL_main_cv);
601f1833 1598 PL_main_cv = NULL;
79072805 1599
3280af22
NIS
1600 time(&PL_basetime);
1601 oldscope = PL_scopestack_ix;
599cee73 1602 PL_dowarn = G_WARN_OFF;
f86702cc 1603
14dd3ad8 1604 JMPENV_PUSH(ret);
6224f72b 1605 switch (ret) {
312caa8e 1606 case 0:
14dd3ad8 1607 parse_body(env,xsinit);
3c10abe3
AG
1608 if (PL_unitcheckav)
1609 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1610 if (PL_checkav)
1611 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1612 ret = 0;
1613 break;
6224f72b
GS
1614 case 1:
1615 STATUS_ALL_FAILURE;
1616 /* FALL THROUGH */
1617 case 2:
1618 /* my_exit() was called */
3280af22 1619 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1620 LEAVE;
1621 FREETMPS;
3280af22 1622 PL_curstash = PL_defstash;
3c10abe3
AG
1623 if (PL_unitcheckav)
1624 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1625 if (PL_checkav)
1626 call_list(oldscope, PL_checkav);
37038d91 1627 ret = STATUS_EXIT;
14dd3ad8 1628 break;
6224f72b 1629 case 3:
bf49b057 1630 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1631 ret = 1;
1632 break;
6224f72b 1633 }
14dd3ad8
GS
1634 JMPENV_POP;
1635 return ret;
1636}
1637
4a5df386
NC
1638/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1639 miniperl, and we need to see those flags reflected in the values here. */
1640
1641/* What this returns is subject to change. Use the public interface in Config.
1642 */
1643static void
1644S_Internals_V(pTHX_ CV *cv)
1645{
1646 dXSARGS;
1647#ifdef LOCAL_PATCH_COUNT
1648 const int local_patch_count = LOCAL_PATCH_COUNT;
1649#else
1650 const int local_patch_count = 0;
1651#endif
2dc296d2 1652 const int entries = 3 + local_patch_count;
4a5df386
NC
1653 int i;
1654 static char non_bincompat_options[] =
1655# ifdef DEBUGGING
1656 " DEBUGGING"
1657# endif
1658# ifdef NO_MATHOMS
0d311fbe 1659 " NO_MATHOMS"
4a5df386
NC
1660# endif
1661# ifdef PERL_DISABLE_PMC
1662 " PERL_DISABLE_PMC"
1663# endif
1664# ifdef PERL_DONT_CREATE_GVSV
1665 " PERL_DONT_CREATE_GVSV"
1666# endif
1667# ifdef PERL_IS_MINIPERL
1668 " PERL_IS_MINIPERL"
1669# endif
1670# ifdef PERL_MALLOC_WRAP
1671 " PERL_MALLOC_WRAP"
1672# endif
1673# ifdef PERL_MEM_LOG
1674 " PERL_MEM_LOG"
1675# endif
1676# ifdef PERL_MEM_LOG_NOIMPL
1677 " PERL_MEM_LOG_NOIMPL"
1678# endif
1679# ifdef PERL_USE_DEVEL
1680 " PERL_USE_DEVEL"
1681# endif
1682# ifdef PERL_USE_SAFE_PUTENV
1683 " PERL_USE_SAFE_PUTENV"
1684# endif
de618ee4
NC
1685# ifdef USE_ATTRIBUTES_FOR_PERLIO
1686 " USE_ATTRIBUTES_FOR_PERLIO"
1687# endif
4a5df386
NC
1688# ifdef USE_FAST_STDIO
1689 " USE_FAST_STDIO"
1690# endif
5a8d8935
NC
1691# ifdef USE_PERL_ATOF
1692 " USE_PERL_ATOF"
1693# endif
0d311fbe
NC
1694# ifdef USE_SITECUSTOMIZE
1695 " USE_SITECUSTOMIZE"
1696# endif
4a5df386
NC
1697 ;
1698 PERL_UNUSED_ARG(cv);
1699 PERL_UNUSED_ARG(items);
1700
1701 EXTEND(SP, entries);
1702
1703 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1704 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1705 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1706
1707#ifdef __DATE__
1708# ifdef __TIME__
1709 PUSHs(Perl_newSVpvn_flags(aTHX_
1710 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1711 SVs_TEMP));
1712# else
1713 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1714 SVs_TEMP));
1715# endif
1716#else
1717 PUSHs(&PL_sv_undef);
1718#endif
1719
4a5df386
NC
1720 for (i = 1; i <= local_patch_count; i++) {
1721 /* This will be an undef, if PL_localpatches[i] is NULL. */
1722 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1723 }
1724
1725 XSRETURN(entries);
1726}
1727
be71fc8f
NC
1728#define INCPUSH_UNSHIFT 0x01
1729#define INCPUSH_ADD_OLD_VERS 0x02
1730#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1731#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1732#define INCPUSH_NOT_BASEDIR 0x10
1733#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1734#define INCPUSH_ADD_SUB_DIRS \
1735 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1736
312caa8e 1737STATIC void *
14dd3ad8 1738S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1739{
27da23d5 1740 dVAR;
2f9285f8 1741 PerlIO *rsfp;
312caa8e 1742 int argc = PL_origargc;
8f42b153 1743 char **argv = PL_origargv;
e1ec3a88 1744 const char *scriptname = NULL;
312caa8e 1745 VOL bool dosearch = FALSE;
c7030b81 1746 register char c;
bd61b366 1747 const char *cddir = NULL;
ab019eaa 1748#ifdef USE_SITECUSTOMIZE
20ef40cf 1749 bool minus_f = FALSE;
ab019eaa 1750#endif
009d90df 1751 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1752 bool add_read_e_script = FALSE;
009d90df
DM
1753
1754 SvGROW(linestr_sv, 80);
76f68e9b 1755 sv_setpvs(linestr_sv,"");
312caa8e 1756
6224f72b 1757 init_main_stash();
54310121 1758
c7030b81
NC
1759 {
1760 const char *s;
6224f72b
GS
1761 for (argc--,argv++; argc > 0; argc--,argv++) {
1762 if (argv[0][0] != '-' || !argv[0][1])
1763 break;
6224f72b
GS
1764 s = argv[0]+1;
1765 reswitch:
47f56822 1766 switch ((c = *s)) {
729a02f2 1767 case 'C':
1d5472a9
GS
1768#ifndef PERL_STRICT_CR
1769 case '\r':
1770#endif
6224f72b
GS
1771 case ' ':
1772 case '0':
1773 case 'F':
1774 case 'a':
1775 case 'c':
1776 case 'd':
1777 case 'D':
1778 case 'h':
1779 case 'i':
1780 case 'l':
1781 case 'M':
1782 case 'm':
1783 case 'n':
1784 case 'p':
1785 case 's':
1786 case 'u':
1787 case 'U':
1788 case 'v':
599cee73
PM
1789 case 'W':
1790 case 'X':
6224f72b 1791 case 'w':
97bd5664 1792 if ((s = moreswitches(s)))
6224f72b
GS
1793 goto reswitch;
1794 break;
33b78306 1795
1dbad523 1796 case 't':
22f7c9c9 1797 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1798 if( !PL_tainting ) {
1799 PL_taint_warn = TRUE;
1800 PL_tainting = TRUE;
1801 }
1802 s++;
1803 goto reswitch;
6224f72b 1804 case 'T':
22f7c9c9 1805 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1806 PL_tainting = TRUE;
317ea90d 1807 PL_taint_warn = FALSE;
6224f72b
GS
1808 s++;
1809 goto reswitch;
f86702cc 1810
bc9b29db
RH
1811 case 'E':
1812 PL_minus_E = TRUE;
1813 /* FALL THROUGH */
6224f72b 1814 case 'e':
f20b2998 1815 forbid_setid('e', FALSE);
3280af22 1816 if (!PL_e_script) {
396482e1 1817 PL_e_script = newSVpvs("");
5486870f 1818 add_read_e_script = TRUE;
6224f72b
GS
1819 }
1820 if (*++s)
3280af22 1821 sv_catpv(PL_e_script, s);
6224f72b 1822 else if (argv[1]) {
3280af22 1823 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1824 argc--,argv++;
1825 }
1826 else
47f56822 1827 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1828 sv_catpvs(PL_e_script, "\n");
6224f72b 1829 break;
afe37c7d 1830
20ef40cf 1831 case 'f':
f5542d3a 1832#ifdef USE_SITECUSTOMIZE
20ef40cf 1833 minus_f = TRUE;
f5542d3a 1834#endif
20ef40cf
GA
1835 s++;
1836 goto reswitch;
1837
6224f72b 1838 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1839 forbid_setid('I', FALSE);
bd61b366 1840 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1841 argc--,argv++;
1842 }
6224f72b 1843 if (s && *s) {
0df16ed7 1844 STRLEN len = strlen(s);
55b4bc1c 1845 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1846 }
1847 else
a67e862a 1848 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1849 break;
6224f72b 1850 case 'S':
f20b2998 1851 forbid_setid('S', FALSE);
6224f72b
GS
1852 dosearch = TRUE;
1853 s++;
1854 goto reswitch;
1855 case 'V':
7edfd0ef
NC
1856 {
1857 SV *opts_prog;
1858
7edfd0ef 1859 if (*++s != ':') {
37ca4a5b 1860 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1861 }
1862 else {
1863 ++s;
1864 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1865 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1866 0, s, 0);
1867 s += strlen(s);
1868 }
37ca4a5b 1869 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1870 /* don't look for script or read stdin */
1871 scriptname = BIT_BUCKET;
1872 goto reswitch;
6224f72b 1873 }
6224f72b 1874 case 'x':
3280af22 1875 PL_doextract = TRUE;
6224f72b 1876 s++;
304334da 1877 if (*s)
f4c556ac 1878 cddir = s;
6224f72b
GS
1879 break;
1880 case 0:
1881 break;
1882 case '-':
1883 if (!*++s || isSPACE(*s)) {
1884 argc--,argv++;
1885 goto switch_end;
1886 }
1887 /* catch use of gnu style long options */
1888 if (strEQ(s, "version")) {
dd374669 1889 s = (char *)"v";
6224f72b
GS
1890 goto reswitch;
1891 }
1892 if (strEQ(s, "help")) {
dd374669 1893 s = (char *)"h";
6224f72b
GS
1894 goto reswitch;
1895 }
1896 s--;
1897 /* FALL THROUGH */
1898 default:
cea2e8a9 1899 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1900 }
1901 }
c7030b81
NC
1902 }
1903
6224f72b 1904 switch_end:
54310121 1905
c7030b81
NC
1906 {
1907 char *s;
1908
f675dbe5
CB
1909 if (
1910#ifndef SECURE_INTERNAL_GETENV
1911 !PL_tainting &&
1912#endif
cf756827 1913 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1914 {
74288ac8
GS
1915 while (isSPACE(*s))
1916 s++;
317ea90d 1917 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1918 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1919 PL_tainting = TRUE;
317ea90d
MS
1920 PL_taint_warn = FALSE;
1921 }
74288ac8 1922 else {
bd61b366 1923 char *popt_copy = NULL;
74288ac8 1924 while (s && *s) {
54913509 1925 const char *d;
74288ac8
GS
1926 while (isSPACE(*s))
1927 s++;
1928 if (*s == '-') {
1929 s++;
1930 if (isSPACE(*s))
1931 continue;
1932 }
4ea8f8fb 1933 d = s;
74288ac8
GS
1934 if (!*s)
1935 break;
2b622f1a 1936 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1937 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1938 while (++s && *s) {
1939 if (isSPACE(*s)) {
cf756827 1940 if (!popt_copy) {
bfa6c418
NC
1941 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1942 s = popt_copy + (s - d);
1943 d = popt_copy;
cf756827 1944 }
4ea8f8fb
MS
1945 *s++ = '\0';
1946 break;
1947 }
1948 }
1c4db469 1949 if (*d == 't') {
317ea90d
MS
1950 if( !PL_tainting ) {
1951 PL_taint_warn = TRUE;
1952 PL_tainting = TRUE;
1953 }
1c4db469 1954 } else {
97bd5664 1955 moreswitches(d);
1c4db469 1956 }
6224f72b 1957 }
6224f72b
GS
1958 }
1959 }
c7030b81 1960 }
a0d0e21e 1961
87e06404 1962#if defined(USE_SITECUSTOMIZE) && !defined(PERL_IS_MINIPERL)
20ef40cf 1963 if (!minus_f) {
404ad9dc
NC
1964 /* SITELIB_EXP is a function call on Win32.
1965 The games with local $! are to avoid setting errno if there is no
1966 sitecustomize script. */
1967 const char *const sitelib = SITELIB_EXP;
29a861e7 1968 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1969 Perl_newSVpvf(aTHX_
1970 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
20ef40cf
GA
1971 }
1972#endif
1973
6224f72b
GS
1974 if (!scriptname)
1975 scriptname = argv[0];
3280af22 1976 if (PL_e_script) {
6224f72b
GS
1977 argc++,argv--;
1978 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1979 }
bd61b366 1980 else if (scriptname == NULL) {
6224f72b
GS
1981#ifdef MSDOS
1982 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1983 moreswitches("h");
6224f72b
GS
1984#endif
1985 scriptname = "-";
1986 }
1987
b7975bdd
NC
1988 /* Set $^X early so that it can be used for relocatable paths in @INC */
1989 assert (!PL_tainted);
1990 TAINT;
1991 S_set_caret_X(aTHX);
1992 TAINT_NOT;
2cace6ac 1993 init_perllib();
6224f72b 1994
a52eba0e 1995 {
f20b2998 1996 bool suidscript = FALSE;
829372d3 1997
cc69b689 1998 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 1999
2f9285f8 2000 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2001 linestr_sv, rsfp);
6224f72b 2002
64ca3a65 2003#ifndef PERL_MICRO
a52eba0e
NC
2004# if defined(SIGCHLD) || defined(SIGCLD)
2005 {
2006# ifndef SIGCHLD
2007# define SIGCHLD SIGCLD
2008# endif
2009 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2010 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2011 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2012 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2013 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2014 }
0b5b802d 2015 }
a52eba0e 2016# endif
64ca3a65 2017#endif
0b5b802d 2018
e37778c2 2019 if (PL_doextract) {
faef540c 2020
f20b2998 2021 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2022 setuid scripts. */
2023 forbid_setid('x', suidscript);
f20b2998 2024 /* Hence you can't get here if suidscript is true */
faef540c 2025
2f9285f8 2026 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2027 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2028 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2029 }
f4c556ac 2030 }
6224f72b 2031
ea726b52 2032 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2033 CvUNIQUE_on(PL_compcv);
2034
dd2155a4 2035 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2036
dd69841b
BB
2037 PL_isarev = newHV();
2038
0c4f7ff0 2039 boot_core_PerlIO();
6224f72b 2040 boot_core_UNIVERSAL();
e1a479c5 2041 boot_core_mro();
4a5df386 2042 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2043
2044 if (xsinit)
acfe0abc 2045 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2046#ifndef PERL_MICRO
d0d72822 2047#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2048 init_os_extras();
6224f72b 2049#endif
64ca3a65 2050#endif
6224f72b 2051
29209bc5 2052#ifdef USE_SOCKS
1b9c9cf5
DH
2053# ifdef HAS_SOCKS5_INIT
2054 socks5_init(argv[0]);
2055# else
29209bc5 2056 SOCKSinit(argv[0]);
1b9c9cf5 2057# endif
ac27b0f5 2058#endif
29209bc5 2059
6224f72b
GS
2060 init_predump_symbols();
2061 /* init_postdump_symbols not currently designed to be called */
2062 /* more than once (ENV isn't cleared first, for example) */
2063 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2064 if (!PL_do_undump)
6224f72b
GS
2065 init_postdump_symbols(argc,argv,env);
2066
27da23d5
JH
2067 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2068 * or explicitly in some platforms.
085a54d9 2069 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2070 * look like the user wants to use UTF-8. */
a0fd4948 2071#if defined(__SYMBIAN32__)
27da23d5
JH
2072 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2073#endif
e27b5b51 2074# ifndef PERL_IS_MINIPERL
06e66572
JH
2075 if (PL_unicode) {
2076 /* Requires init_predump_symbols(). */
a05d7ebb 2077 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2078 IO* io;
2079 PerlIO* fp;
2080 SV* sv;
2081
a05d7ebb 2082 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2083 * and the default open disciplines. */
a05d7ebb
JH
2084 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2085 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2086 (fp = IoIFP(io)))
2087 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2088 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2089 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2090 (fp = IoOFP(io)))
2091 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2092 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2093 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2094 (fp = IoOFP(io)))
2095 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2096 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2097 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2098 SVt_PV)))) {
a05d7ebb
JH
2099 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2100 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2101 if (in) {
2102 if (out)
76f68e9b 2103 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2104 else
76f68e9b 2105 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2106 }
2107 else if (out)
76f68e9b 2108 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2109 SvSETMAGIC(sv);
2110 }
b310b053
JH
2111 }
2112 }
e27b5b51 2113#endif
b310b053 2114
c7030b81
NC
2115 {
2116 const char *s;
4ffa73a3
JH
2117 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2118 if (strEQ(s, "unsafe"))
2119 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2120 else if (strEQ(s, "safe"))
2121 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2122 else
2123 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2124 }
c7030b81 2125 }
4ffa73a3 2126
81d86705 2127#ifdef PERL_MAD
c7030b81
NC
2128 {
2129 const char *s;
81d86705
NC
2130 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2131 PL_madskills = 1;
2132 PL_minus_c = 1;
2133 if (!s || !s[0])
2134 PL_xmlfp = PerlIO_stdout();
2135 else {
2136 PL_xmlfp = PerlIO_open(s, "w");
2137 if (!PL_xmlfp)
2138 Perl_croak(aTHX_ "Can't open %s", s);
2139 }
1a9a51d4 2140 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2141 }
c7030b81
NC
2142 }
2143
2144 {
2145 const char *s;
81d86705
NC
2146 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2147 PL_madskills = atoi(s);
1a9a51d4 2148 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2149 }
c7030b81 2150 }
81d86705
NC
2151#endif
2152
5486870f 2153 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2154 PL_subname = newSVpvs("main");
6224f72b 2155
5486870f
DM
2156 if (add_read_e_script)
2157 filter_add(read_e_script, NULL);
2158
6224f72b
GS
2159 /* now parse the script */
2160
93189314 2161 SETERRNO(0,SS_NORMAL);
13765c85 2162 if (yyparse() || PL_parser->error_count) {
3280af22 2163 if (PL_minus_c)
cea2e8a9 2164 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2165 else {
cea2e8a9 2166 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2167 PL_origfilename);
6224f72b
GS
2168 }
2169 }
57843af0 2170 CopLINE_set(PL_curcop, 0);
3280af22 2171 PL_curstash = PL_defstash;
3280af22
NIS
2172 if (PL_e_script) {
2173 SvREFCNT_dec(PL_e_script);
a0714e2c 2174 PL_e_script = NULL;
6224f72b
GS
2175 }
2176
3280af22 2177 if (PL_do_undump)
6224f72b
GS
2178 my_unexec();
2179
57843af0
GS
2180 if (isWARN_ONCE) {
2181 SAVECOPFILE(PL_curcop);
2182 SAVECOPLINE(PL_curcop);
3280af22 2183 gv_check(PL_defstash);
57843af0 2184 }
6224f72b
GS
2185
2186 LEAVE;
2187 FREETMPS;
2188
2189#ifdef MYMALLOC
f6a607bc
RGS
2190 {
2191 const char *s;
6224f72b
GS
2192 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2193 dump_mstats("after compilation:");
f6a607bc 2194 }
6224f72b
GS
2195#endif
2196
2197 ENTER;
febb3a6d 2198 PL_restartjmpenv = NULL;
3280af22 2199 PL_restartop = 0;
312caa8e 2200 return NULL;
6224f72b
GS
2201}
2202
954c1994
GS
2203/*
2204=for apidoc perl_run
2205
2206Tells a Perl interpreter to run. See L<perlembed>.
2207
2208=cut
2209*/
2210
6224f72b 2211int
0cb96387 2212perl_run(pTHXx)
6224f72b 2213{
97aff369 2214 dVAR;
6224f72b 2215 I32 oldscope;
14dd3ad8 2216 int ret = 0;
db36c5a1 2217 dJMPENV;
6224f72b 2218
7918f24d
NC
2219 PERL_ARGS_ASSERT_PERL_RUN;
2220#ifndef MULTIPLICITY
ed6c66dd 2221 PERL_UNUSED_ARG(my_perl);
7918f24d 2222#endif
9d4ba2ae 2223
3280af22 2224 oldscope = PL_scopestack_ix;
96e176bf
CL
2225#ifdef VMS
2226 VMSISH_HUSHED = 0;
2227#endif
6224f72b 2228
14dd3ad8 2229 JMPENV_PUSH(ret);
6224f72b
GS
2230 switch (ret) {
2231 case 1:
2232 cxstack_ix = -1; /* start context stack again */
312caa8e 2233 goto redo_body;
14dd3ad8 2234 case 0: /* normal completion */
14dd3ad8
GS
2235 redo_body:
2236 run_body(oldscope);
14dd3ad8
GS
2237 /* FALL THROUGH */
2238 case 2: /* my_exit() */
3280af22 2239 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2240 LEAVE;
2241 FREETMPS;
3280af22 2242 PL_curstash = PL_defstash;
3a1ee7e8 2243 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2244 PL_endav && !PL_minus_c)
2245 call_list(oldscope, PL_endav);
6224f72b
GS
2246#ifdef MYMALLOC
2247 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2248 dump_mstats("after execution: ");
2249#endif
37038d91 2250 ret = STATUS_EXIT;
14dd3ad8 2251 break;
6224f72b 2252 case 3:
312caa8e
CS
2253 if (PL_restartop) {
2254 POPSTACK_TO(PL_mainstack);
2255 goto redo_body;
6224f72b 2256 }
bf49b057 2257 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2258 FREETMPS;
14dd3ad8
GS
2259 ret = 1;
2260 break;
6224f72b
GS
2261 }
2262
14dd3ad8
GS
2263 JMPENV_POP;
2264 return ret;
312caa8e
CS
2265}
2266
dd374669 2267STATIC void
14dd3ad8
GS
2268S_run_body(pTHX_ I32 oldscope)
2269{
97aff369 2270 dVAR;
6224f72b 2271 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2272 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2273
3280af22 2274 if (!PL_restartop) {
81d86705
NC
2275#ifdef PERL_MAD
2276 if (PL_xmlfp) {
2277 xmldump_all();
2278 exit(0); /* less likely to core dump than my_exit(0) */
2279 }
2280#endif
cf2782cd 2281#ifdef DEBUGGING
f0e3f042
CS
2282 if (DEBUG_x_TEST || DEBUG_B_TEST)
2283 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2284 if (!DEBUG_q_TEST)
2285 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2286#endif
6224f72b 2287
3280af22 2288 if (PL_minus_c) {
bf49b057 2289 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2290 my_exit(0);
2291 }
3280af22 2292 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2293 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2294 if (PL_initav)
2295 call_list(oldscope, PL_initav);
f1fac472
NC
2296#ifdef PERL_DEBUG_READONLY_OPS
2297 Perl_pending_Slabs_to_ro(aTHX);
2298#endif
6224f72b
GS
2299 }
2300
2301 /* do it */
2302
3280af22 2303 if (PL_restartop) {
febb3a6d 2304 PL_restartjmpenv = NULL;
533c011a 2305 PL_op = PL_restartop;
3280af22 2306 PL_restartop = 0;
cea2e8a9 2307 CALLRUNOPS(aTHX);
6224f72b 2308 }
3280af22
NIS
2309 else if (PL_main_start) {
2310 CvDEPTH(PL_main_cv) = 1;
533c011a 2311 PL_op = PL_main_start;
cea2e8a9 2312 CALLRUNOPS(aTHX);
6224f72b 2313 }
f6b3007c
JH
2314 my_exit(0);
2315 /* NOTREACHED */
6224f72b
GS
2316}
2317
954c1994 2318/*
ccfc67b7
JH
2319=head1 SV Manipulation Functions
2320
954c1994
GS
2321=for apidoc p||get_sv
2322
64ace3f8
NC
2323Returns the SV of the specified Perl scalar. C<flags> are passed to
2324C<gv_fetchpv>. If C<GV_ADD> is set and the
2325Perl variable does not exist then it will be created. If C<flags> is zero
2326and the variable does not exist then NULL is returned.
954c1994
GS
2327
2328=cut
2329*/
2330
6224f72b 2331SV*
64ace3f8 2332Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2333{
2334 GV *gv;
7918f24d
NC
2335
2336 PERL_ARGS_ASSERT_GET_SV;
2337
64ace3f8 2338 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2339 if (gv)
2340 return GvSV(gv);
a0714e2c 2341 return NULL;
6224f72b
GS
2342}
2343
954c1994 2344/*
ccfc67b7
JH
2345=head1 Array Manipulation Functions
2346
954c1994
GS
2347=for apidoc p||get_av
2348
cbfd0a87
NC
2349Returns the AV of the specified Perl array. C<flags> are passed to
2350C<gv_fetchpv>. If C<GV_ADD> is set and the
2351Perl variable does not exist then it will be created. If C<flags> is zero
2352and the variable does not exist then NULL is returned.
954c1994
GS
2353
2354=cut
2355*/
2356
6224f72b 2357AV*
cbfd0a87 2358Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2359{
cbfd0a87 2360 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2361
2362 PERL_ARGS_ASSERT_GET_AV;
2363
cbfd0a87 2364 if (flags)
6224f72b
GS
2365 return GvAVn(gv);
2366 if (gv)
2367 return GvAV(gv);
7d49f689 2368 return NULL;
6224f72b
GS
2369}
2370
954c1994 2371/*
ccfc67b7
JH
2372=head1 Hash Manipulation Functions
2373
954c1994
GS
2374=for apidoc p||get_hv
2375
6673a63c
NC
2376Returns the HV of the specified Perl hash. C<flags> are passed to
2377C<gv_fetchpv>. If C<GV_ADD> is set and the
2378Perl variable does not exist then it will be created. If C<flags> is zero
2379and the variable does not exist then NULL is returned.
954c1994
GS
2380
2381=cut
2382*/
2383
6224f72b 2384HV*
6673a63c 2385Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2386{
6673a63c 2387 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2388
2389 PERL_ARGS_ASSERT_GET_HV;
2390
6673a63c 2391 if (flags)
a0d0e21e
LW
2392 return GvHVn(gv);
2393 if (gv)
2394 return GvHV(gv);
5c284bb0 2395 return NULL;
a0d0e21e
LW
2396}
2397
954c1994 2398/*
ccfc67b7
JH
2399=head1 CV Manipulation Functions
2400
780a5241
NC
2401=for apidoc p||get_cvn_flags
2402
2403Returns the CV of the specified Perl subroutine. C<flags> are passed to
2404C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2405exist then it will be declared (which has the same effect as saying
2406C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2407then NULL is returned.
2408
954c1994
GS
2409=for apidoc p||get_cv
2410
780a5241 2411Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2412
2413=cut
2414*/
2415
a0d0e21e 2416CV*
780a5241 2417Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2418{
780a5241 2419 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2420 /* XXX this is probably not what they think they're getting.
2421 * It has the same effect as "sub name;", i.e. just a forward
2422 * declaration! */
7918f24d
NC
2423
2424 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2425
780a5241 2426 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2427 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2428 return newSUB(start_subparse(FALSE, 0),
780a5241 2429 newSVOP(OP_CONST, 0, sv),
5f66b61c 2430 NULL, NULL);
780a5241 2431 }
a0d0e21e 2432 if (gv)
8ebc5c01 2433 return GvCVu(gv);
601f1833 2434 return NULL;
a0d0e21e
LW
2435}
2436
2c67934f
NC
2437/* Nothing in core calls this now, but we can't replace it with a macro and
2438 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2439CV*
2440Perl_get_cv(pTHX_ const char *name, I32 flags)
2441{
7918f24d
NC
2442 PERL_ARGS_ASSERT_GET_CV;
2443
780a5241
NC
2444 return get_cvn_flags(name, strlen(name), flags);
2445}
2446
79072805
LW
2447/* Be sure to refetch the stack pointer after calling these routines. */
2448
954c1994 2449/*
ccfc67b7
JH
2450
2451=head1 Callback Functions
2452
954c1994
GS
2453=for apidoc p||call_argv
2454
2455Performs a callback to the specified Perl sub. See L<perlcall>.
2456
2457=cut
2458*/
2459
a0d0e21e 2460I32
8f42b153 2461Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2462
8ac85365
NIS
2463 /* See G_* flags in cop.h */
2464 /* null terminated arg list */
8990e307 2465{
97aff369 2466 dVAR;
a0d0e21e 2467 dSP;
8990e307 2468
7918f24d
NC
2469 PERL_ARGS_ASSERT_CALL_ARGV;
2470
924508f0 2471 PUSHMARK(SP);
a0d0e21e 2472 if (argv) {
8990e307 2473 while (*argv) {
6e449a3a 2474 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2475 argv++;
2476 }
a0d0e21e 2477 PUTBACK;
8990e307 2478 }
864dbfa3 2479 return call_pv(sub_name, flags);
8990e307
LW
2480}
2481
954c1994
GS
2482/*
2483=for apidoc p||call_pv
2484
2485Performs a callback to the specified Perl sub. See L<perlcall>.
2486
2487=cut
2488*/
2489
a0d0e21e 2490I32
864dbfa3 2491Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2492 /* name of the subroutine */
2493 /* See G_* flags in cop.h */
a0d0e21e 2494{
7918f24d
NC
2495 PERL_ARGS_ASSERT_CALL_PV;
2496
0da0e728 2497 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2498}
2499
954c1994
GS
2500/*
2501=for apidoc p||call_method
2502
2503Performs a callback to the specified Perl method. The blessed object must
2504be on the stack. See L<perlcall>.
2505
2506=cut
2507*/
2508
a0d0e21e 2509I32
864dbfa3 2510Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2511 /* name of the subroutine */
2512 /* See G_* flags in cop.h */
a0d0e21e 2513{
46ca9bac 2514 STRLEN len;
7918f24d
NC
2515 PERL_ARGS_ASSERT_CALL_METHOD;
2516
46ca9bac 2517 len = strlen(methname);
2518
2519 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2520 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2521}
2522
2523/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2524/*
2525=for apidoc p||call_sv
2526
2527Performs a callback to the Perl sub whose name is in the SV. See
2528L<perlcall>.
2529
2530=cut
2531*/
2532
a0d0e21e 2533I32
001d637e 2534Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2535 /* See G_* flags in cop.h */
a0d0e21e 2536{
27da23d5 2537 dVAR; dSP;
a0d0e21e 2538 LOGOP myop; /* fake syntax tree node */
968b3946 2539 UNOP method_op;
aa689395 2540 I32 oldmark;
8ea43dc8 2541 VOL I32 retval = 0;
a0d0e21e 2542 I32 oldscope;
54310121 2543 bool oldcatch = CATCH_GET;
6224f72b 2544 int ret;
c4420975 2545 OP* const oldop = PL_op;
db36c5a1 2546 dJMPENV;
1e422769 2547
7918f24d
NC
2548 PERL_ARGS_ASSERT_CALL_SV;
2549
a0d0e21e
LW
2550 if (flags & G_DISCARD) {
2551 ENTER;
2552 SAVETMPS;
2553 }
2f8edad0
NC
2554 if (!(flags & G_WANT)) {
2555 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2556 */
2557 flags |= G_SCALAR;
2558 }
a0d0e21e 2559
aa689395 2560 Zero(&myop, 1, LOGOP);
5f66b61c 2561 myop.op_next = NULL;
f51d4af5 2562 if (!(flags & G_NOARGS))
aa689395 2563 myop.op_flags |= OPf_STACKED;
4f911530 2564 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2565 SAVEOP();
533c011a 2566 PL_op = (OP*)&myop;
aa689395 2567
3280af22
NIS
2568 EXTEND(PL_stack_sp, 1);
2569 *++PL_stack_sp = sv;
aa689395 2570 oldmark = TOPMARK;
3280af22 2571 oldscope = PL_scopestack_ix;
a0d0e21e 2572
3280af22 2573 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2574 /* Handle first BEGIN of -d. */
3280af22 2575 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2576 /* Try harder, since this may have been a sighandler, thus
2577 * curstash may be meaningless. */
ea726b52 2578 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2579 && !(flags & G_NODEBUG))
533c011a 2580 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2581
968b3946
GS
2582 if (flags & G_METHOD) {
2583 Zero(&method_op, 1, UNOP);
2584 method_op.op_next = PL_op;
2585 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2586 method_op.op_type = OP_METHOD;
968b3946 2587 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2588 myop.op_type = OP_ENTERSUB;
f39d0b86 2589 PL_op = (OP*)&method_op;
968b3946
GS
2590 }
2591
312caa8e 2592 if (!(flags & G_EVAL)) {
0cdb2077 2593 CATCH_SET(TRUE);
d6f07c05 2594 CALL_BODY_SUB((OP*)&myop);
312caa8e 2595 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2596 CATCH_SET(oldcatch);
312caa8e
CS
2597 }
2598 else {
d78bda3d 2599 myop.op_other = (OP*)&myop;
3280af22 2600 PL_markstack_ptr--;
edb2152a 2601 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2602 PL_markstack_ptr++;
a0d0e21e 2603
14dd3ad8 2604 JMPENV_PUSH(ret);
edb2152a 2605
6224f72b
GS
2606 switch (ret) {
2607 case 0:
14dd3ad8 2608 redo_body:
d6f07c05 2609 CALL_BODY_SUB((OP*)&myop);
312caa8e 2610 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2611 if (!(flags & G_KEEPERR)) {
ab69dbc2 2612 CLEAR_ERRSV();
8433848b 2613 }
a0d0e21e 2614 break;
6224f72b 2615 case 1:
f86702cc 2616 STATUS_ALL_FAILURE;
a0d0e21e 2617 /* FALL THROUGH */
6224f72b 2618 case 2:
a0d0e21e 2619 /* my_exit() was called */
3280af22 2620 PL_curstash = PL_defstash;
a0d0e21e 2621 FREETMPS;
14dd3ad8 2622 JMPENV_POP;
f86702cc 2623 my_exit_jump();
a0d0e21e 2624 /* NOTREACHED */
6224f72b 2625 case 3:
3280af22 2626 if (PL_restartop) {
febb3a6d 2627 PL_restartjmpenv = NULL;
533c011a 2628 PL_op = PL_restartop;
3280af22 2629 PL_restartop = 0;
312caa8e 2630 goto redo_body;
a0d0e21e 2631 }
3280af22 2632 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2633 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2634 retval = 0;
2635 else {
2636 retval = 1;
3280af22 2637 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2638 }
312caa8e 2639 break;
a0d0e21e 2640 }
a0d0e21e 2641
edb2152a
NC
2642 if (PL_scopestack_ix > oldscope)
2643 delete_eval_scope();
14dd3ad8 2644 JMPENV_POP;
a0d0e21e 2645 }
1e422769 2646
a0d0e21e 2647 if (flags & G_DISCARD) {
3280af22 2648 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2649 retval = 0;
2650 FREETMPS;
2651 LEAVE;
2652 }
533c011a 2653 PL_op = oldop;
a0d0e21e
LW
2654 return retval;
2655}
2656
6e72f9df 2657/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2658
954c1994
GS
2659/*
2660=for apidoc p||eval_sv
2661
2662Tells Perl to C<eval> the string in the SV.
2663
2664=cut
2665*/
2666
a0d0e21e 2667I32
864dbfa3 2668Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2669
8ac85365 2670 /* See G_* flags in cop.h */
a0d0e21e 2671{
97aff369 2672 dVAR;
924508f0 2673 dSP;
a0d0e21e 2674 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2675 VOL I32 oldmark = SP - PL_stack_base;
2676 VOL I32 retval = 0;
6224f72b 2677 int ret;
c4420975 2678 OP* const oldop = PL_op;
db36c5a1 2679 dJMPENV;
84902520 2680
7918f24d
NC
2681 PERL_ARGS_ASSERT_EVAL_SV;
2682
4633a7c4
LW
2683 if (flags & G_DISCARD) {
2684 ENTER;
2685 SAVETMPS;
2686 }
2687
462e5cf6 2688 SAVEOP();
533c011a
NIS
2689 PL_op = (OP*)&myop;
2690 Zero(PL_op, 1, UNOP);
3280af22
NIS
2691 EXTEND(PL_stack_sp, 1);
2692 *++PL_stack_sp = sv;
79072805 2693
4633a7c4
LW
2694 if (!(flags & G_NOARGS))
2695 myop.op_flags = OPf_STACKED;
5f66b61c 2696 myop.op_next = NULL;
6e72f9df 2697 myop.op_type = OP_ENTEREVAL;
4f911530 2698 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2699 if (flags & G_KEEPERR)
2700 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2701
dedbcade
DM
2702 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2703 * before a PUSHEVAL, which corrupts the stack after a croak */
2704 TAINT_PROPER("eval_sv()");
2705
14dd3ad8 2706 JMPENV_PUSH(ret);
6224f72b
GS
2707 switch (ret) {
2708 case 0:
14dd3ad8 2709 redo_body:
d6f07c05 2710 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2711 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2712 if (!(flags & G_KEEPERR)) {
ab69dbc2 2713 CLEAR_ERRSV();
8433848b 2714 }
4633a7c4 2715 break;
6224f72b 2716 case 1:
f86702cc 2717 STATUS_ALL_FAILURE;
4633a7c4 2718 /* FALL THROUGH */
6224f72b 2719 case 2:
4633a7c4 2720 /* my_exit() was called */
3280af22 2721 PL_curstash = PL_defstash;
4633a7c4 2722 FREETMPS;
14dd3ad8 2723 JMPENV_POP;
f86702cc 2724 my_exit_jump();
4633a7c4 2725 /* NOTREACHED */
6224f72b 2726 case 3:
3280af22 2727 if (PL_restartop) {
febb3a6d 2728 PL_restartjmpenv = NULL;
533c011a 2729 PL_op = PL_restartop;
3280af22 2730 PL_restartop = 0;
312caa8e 2731 goto redo_body;
4633a7c4 2732 }
3280af22 2733 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2734 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2735 retval = 0;
2736 else {
2737 retval = 1;
3280af22 2738 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2739 }
312caa8e 2740 break;
4633a7c4
LW
2741 }
2742
14dd3ad8 2743 JMPENV_POP;
4633a7c4 2744 if (flags & G_DISCARD) {
3280af22 2745 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2746 retval = 0;
2747 FREETMPS;
2748 LEAVE;
2749 }
533c011a 2750 PL_op = oldop;
4633a7c4
LW
2751 return retval;
2752}
2753
954c1994
GS
2754/*
2755=for apidoc p||eval_pv
2756
2757Tells Perl to C<eval> the given string and return an SV* result.
2758
2759=cut
2760*/
2761
137443ea 2762SV*
864dbfa3 2763Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2764{
97aff369 2765 dVAR;
137443ea
PP
2766 dSP;
2767 SV* sv = newSVpv(p, 0);
2768
7918f24d
NC
2769 PERL_ARGS_ASSERT_EVAL_PV;
2770
864dbfa3 2771 eval_sv(sv, G_SCALAR);
137443ea
PP
2772 SvREFCNT_dec(sv);
2773
2774 SPAGAIN;
2775 sv = POPs;
2776 PUTBACK;
2777
2d8e6c8d 2778 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2779 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2780 }
137443ea
PP
2781
2782 return sv;
2783}
2784
4633a7c4
LW
2785/* Require a module. */
2786
954c1994 2787/*
ccfc67b7
JH
2788=head1 Embedding Functions
2789
954c1994
GS
2790=for apidoc p||require_pv
2791
7d3fb230
BS
2792Tells Perl to C<require> the file named by the string argument. It is
2793analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2794implemented that way; consider using load_module instead.
954c1994 2795
7d3fb230 2796=cut */
954c1994 2797
4633a7c4 2798void
864dbfa3 2799Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2800{
97aff369 2801 dVAR;
d3acc0f7 2802 dSP;
97aff369 2803 SV* sv;
7918f24d
NC
2804
2805 PERL_ARGS_ASSERT_REQUIRE_PV;
2806
e788e7d3 2807 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2808 PUTBACK;
be41e5d9
NC
2809 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2810 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2811 SPAGAIN;
2812 POPSTACK;
79072805
LW
2813}
2814
76e3520e 2815STATIC void
e1ec3a88 2816S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2817{
ab821d7f 2818 /* This message really ought to be max 23 lines.
75c72d73 2819 * Removed -h because the user already knows that option. Others? */
fb73857a 2820
1566c39d
NC
2821 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2822 minimum of 509 character string literals. */
27da23d5 2823 static const char * const usage_msg[] = {
1566c39d
NC
2824" -0[octal] specify record separator (\\0, if no argument)\n"
2825" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2826" -C[number/list] enables the listed Unicode features\n"
2827" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2828" -d[:debugger] run program under debugger\n"
2829" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2830" -e program one line of program (several -e's allowed, omit programfile)\n"
2831" -E program like -e, but enables all optional features\n"
2832" -f don't do $sitelib/sitecustomize.pl at startup\n"
2833" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2834" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2835" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2836" -l[octal] enable line ending processing, specifies line terminator\n"
2837" -[mM][-]module execute \"use/no module...\" before executing program\n"
2838" -n assume \"while (<>) { ... }\" loop around program\n"
2839" -p assume loop like -n but print line also, like sed\n"
2840" -s enable rudimentary parsing for switches after programfile\n"
2841" -S look for programfile using PATH environment variable\n",
2842" -t enable tainting warnings\n"
2843" -T enable tainting checks\n"
2844" -u dump core after parsing program\n"
2845" -U allow unsafe operations\n"
2846" -v print version, patchlevel and license\n"
2847" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2848" -w enable many useful warnings\n"
1566c39d
NC
2849" -W enable all warnings\n"
2850" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2851" -X disable all warnings\n"
2852" \n"
2853"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2854NULL
2855};
27da23d5 2856 const char * const *p = usage_msg;
1566c39d 2857 PerlIO *out = PerlIO_stdout();
fb73857a 2858
7918f24d
NC
2859 PERL_ARGS_ASSERT_USAGE;
2860
1566c39d
NC
2861 PerlIO_printf(out,
2862 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2863 name);
fb73857a 2864 while (*p)
1566c39d 2865 PerlIO_puts(out, *p++);
4633a7c4
LW
2866}
2867
b4ab917c
DM
2868/* convert a string of -D options (or digits) into an int.
2869 * sets *s to point to the char after the options */
2870
2871#ifdef DEBUGGING
2872int
e1ec3a88 2873Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2874{
27da23d5 2875 static const char * const usage_msgd[] = {
651b8f1a
NC
2876 " Debugging flag values: (see also -d)\n"
2877 " p Tokenizing and parsing (with v, displays parse stack)\n"
2878 " s Stack snapshots (with v, displays all stacks)\n"
2879 " l Context (loop) stack processing\n"
2880 " t Trace execution\n"
2881 " o Method and overloading resolution\n",
2882 " c String/numeric conversions\n"
2883 " P Print profiling info, source file input state\n"
2884 " m Memory and SV allocation\n"
2885 " f Format processing\n"
2886 " r Regular expression parsing and execution\n"
2887 " x Syntax tree dump\n",
2888 " u Tainting checks\n"
2889 " H Hash dump -- usurps values()\n"
2890 " X Scratchpad allocation\n"
2891 " D Cleaning up\n"
2892 " T Tokenising\n"
2893 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2894 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2895 " v Verbose: use in conjunction with other flags\n"
2896 " C Copy On Write\n"
2897 " A Consistency checks on internal structures\n"
2898 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2899 " M trace smart match resolution\n"
2900 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2901 NULL
2902 };
b4ab917c 2903 int i = 0;
7918f24d
NC
2904
2905 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2906
b4ab917c
DM
2907 if (isALPHA(**s)) {
2908 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2909 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2910
2911 for (; isALNUM(**s); (*s)++) {
c4420975 2912 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2913 if (d)
2914 i |= 1 << (d - debopts);
2915 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2916 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2917 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2918 }
2919 }
e6e64d9b 2920 else if (isDIGIT(**s)) {
b4ab917c
DM
2921 i = atoi(*s);
2922 for (; isALNUM(**s); (*s)++) ;
2923 }
ddcf8bc1 2924 else if (givehelp) {
06e869a4 2925 const char *const *p = usage_msgd;
651b8f1a 2926 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 2927 }
b4ab917c
DM
2928# ifdef EBCDIC
2929 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2930 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2931 "-Dp not implemented on this platform\n");
2932# endif
2933 return i;
2934}
2935#endif
2936
79072805
LW
2937/* This routine handles any switches that can be given during run */
2938
c7030b81
NC
2939const char *
2940Perl_moreswitches(pTHX_ const char *s)
79072805 2941{
27da23d5 2942 dVAR;
84c133a0 2943 UV rschar;
0544e6df 2944 const char option = *s; /* used to remember option in -m/-M code */
79072805 2945
7918f24d
NC
2946 PERL_ARGS_ASSERT_MORESWITCHES;
2947
79072805
LW
2948 switch (*s) {
2949 case '0':
a863c7d1 2950 {
f2095865 2951 I32 flags = 0;
a3b680e6 2952 STRLEN numlen;
f2095865
JH
2953
2954 SvREFCNT_dec(PL_rs);
2955 if (s[1] == 'x' && s[2]) {
a3b680e6 2956 const char *e = s+=2;
f2095865
JH
2957 U8 *tmps;
2958
a3b680e6
AL
2959 while (*e)
2960 e++;
f2095865
JH
2961 numlen = e - s;
2962 flags = PERL_SCAN_SILENT_ILLDIGIT;
2963 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2964 if (s + numlen < e) {
2965 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2966 numlen = 0;
2967 s--;
2968 }
396482e1 2969 PL_rs = newSVpvs("");
c5661c80 2970 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2971 tmps = (U8*)SvPVX(PL_rs);
2972 uvchr_to_utf8(tmps, rschar);
2973 SvCUR_set(PL_rs, UNISKIP(rschar));
2974 SvUTF8_on(PL_rs);
2975 }
2976 else {
2977 numlen = 4;
2978 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2979 if (rschar & ~((U8)~0))
2980 PL_rs = &PL_sv_undef;
2981 else if (!rschar && numlen >= 2)
396482e1 2982 PL_rs = newSVpvs("");
f2095865
JH
2983 else {
2984 char ch = (char)rschar;
2985 PL_rs = newSVpvn(&ch, 1);
2986 }
2987 }
64ace3f8 2988 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 2989 return s + numlen;
a863c7d1 2990 }
46487f74 2991 case 'C':
a05d7ebb 2992 s++;
dd374669 2993 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
2994 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
2995 PL_utf8cache = -1;
46487f74 2996 return s;
2304df62 2997 case 'F':
3280af22 2998 PL_minus_F = TRUE;
ebce5377
RGS
2999 PL_splitstr = ++s;
3000 while (*s && !isSPACE(*s)) ++s;
e49e380e 3001 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3002 return s;
79072805 3003 case 'a':
3280af22 3004 PL_minus_a = TRUE;
79072805
LW
3005 s++;
3006 return s;
3007 case 'c':
3280af22 3008 PL_minus_c = TRUE;
79072805
LW
3009 s++;
3010 return s;
3011 case 'd':
f20b2998 3012 forbid_setid('d', FALSE);
4633a7c4 3013 s++;
2cbb2ee1
RGS
3014
3015 /* -dt indicates to the debugger that threads will be used */
3016 if (*s == 't' && !isALNUM(s[1])) {
3017 ++s;
3018 my_setenv("PERL5DB_THREADED", "1");
3019 }
3020
70c94a19
RR
3021 /* The following permits -d:Mod to accepts arguments following an =
3022 in the fashion that -MSome::Mod does. */
3023 if (*s == ':' || *s == '=') {
f85893a1
NC
3024 const char *start = ++s;
3025 const char *const end = s + strlen(s);
396482e1 3026 SV * const sv = newSVpvs("use Devel::");
f85893a1 3027
70c94a19
RR
3028 /* We now allow -d:Module=Foo,Bar */
3029 while(isALNUM(*s) || *s==':') ++s;
3030 if (*s != '=')
f85893a1 3031 sv_catpvn(sv, start, end - start);
70c94a19
RR
3032 else {
3033 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3034 /* Don't use NUL as q// delimiter here, this string goes in the
3035 * environment. */
3036 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3037 }
f85893a1 3038 s = end;
184f32ec 3039 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3040 SvREFCNT_dec(sv);
4633a7c4 3041 }
ed094faf 3042 if (!PL_perldb) {
3280af22 3043 PL_perldb = PERLDB_ALL;
a0d0e21e 3044 init_debugger();
ed094faf 3045 }
79072805
LW
3046 return s;
3047 case 'D':
0453d815 3048 {
79072805 3049#ifdef DEBUGGING
f20b2998 3050 forbid_setid('D', FALSE);
b4ab917c 3051 s++;
dd374669 3052 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3053#else /* !DEBUGGING */
0453d815 3054 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3055 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3056 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3057 for (s++; isALNUM(*s); s++) ;
79072805 3058#endif
79072805 3059 return s;
0453d815 3060 }
4633a7c4 3061 case 'h':
ac27b0f5 3062 usage(PL_origargv[0]);
7ca617d0 3063 my_exit(0);
79072805 3064 case 'i':
43c5f42d 3065 Safefree(PL_inplace);
c030f24b
GH
3066#if defined(__CYGWIN__) /* do backup extension automagically */
3067 if (*(s+1) == '\0') {
c86a4f2e 3068 PL_inplace = savepvs(".bak");
c030f24b
GH
3069 return s+1;
3070 }
3071#endif /* __CYGWIN__ */
5ef5d758 3072 {
d4c19fe8 3073 const char * const start = ++s;
5ef5d758
NC
3074 while (*s && !isSPACE(*s))
3075 ++s;
3076
3077 PL_inplace = savepvn(start, s - start);
3078 }
7b8d334a 3079 if (*s) {
5ef5d758 3080 ++s;
7b8d334a 3081 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3082 s++;
7b8d334a 3083 }
fb73857a 3084 return s;
4e49a025 3085 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3086 forbid_setid('I', FALSE);
fb73857a
PP
3087 ++s;
3088 while (*s && isSPACE(*s))
3089 ++s;
3090 if (*s) {
c7030b81 3091 const char *e, *p;
0df16ed7
GS
3092 p = s;
3093 /* ignore trailing spaces (possibly followed by other switches) */
3094 do {
3095 for (e = p; *e && !isSPACE(*e); e++) ;
3096 p = e;
3097 while (isSPACE(*p))
3098 p++;
3099 } while (*p && *p != '-');
55b4bc1c 3100 incpush(s, e-s,
e28f3139 3101 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3102 s = p;
3103 if (*s == '-')
3104 s++;
79072805
LW
3105 }
3106 else
a67e862a 3107 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3108 return s;
79072805 3109 case 'l':
3280af22 3110 PL_minus_l = TRUE;
79072805 3111 s++;
7889fe52
NIS
3112 if (PL_ors_sv) {
3113 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3114 PL_ors_sv = NULL;
7889fe52 3115 }
79072805 3116 if (isDIGIT(*s)) {
53305cf1 3117 I32 flags = 0;
a3b680e6 3118 STRLEN numlen;
396482e1 3119 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3120 numlen = 3 + (*s == '0');
3121 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3122 s += numlen;
3123 }
3124 else {
8bfdd7d9 3125 if (RsPARA(PL_rs)) {
396482e1 3126 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3127 }
3128 else {
8bfdd7d9 3129 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3130 }
79072805
LW
3131 }
3132 return s;
1a30305b 3133 case 'M':
f20b2998 3134 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3135 /* FALL THROUGH */
3136 case 'm':
f20b2998 3137 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3138 if (*++s) {
c7030b81 3139 const char *start;
b64cb68c 3140 const char *end;
11343788 3141 SV *sv;
e1ec3a88 3142 const char *use = "use ";
0544e6df 3143 bool colon = FALSE;
a5f75d66 3144 /* -M-foo == 'no foo' */
d0043bd1
NC
3145 /* Leading space on " no " is deliberate, to make both
3146 possibilities the same length. */
3147 if (*s == '-') { use = " no "; ++s; }
3148 sv = newSVpvn(use,4);
a5f75d66 3149 start = s;
1a30305b 3150 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3151 while(isALNUM(*s) || *s==':') {
3152 if( *s++ == ':' ) {
3153 if( *s == ':' )
3154 s++;
3155 else
3156 colon = TRUE;
3157 }
3158 }
3159 if (s == start)
3160 Perl_croak(aTHX_ "Module name required with -%c option",
3161 option);
3162 if (colon)
3163 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3164 "contains single ':'",
63da6837 3165 (int)(s - start), start, option);
b64cb68c 3166 end = s + strlen(s);
c07a80fd 3167 if (*s != '=') {
b64cb68c 3168 sv_catpvn(sv, start, end - start);
0544e6df 3169 if (option == 'm') {
c07a80fd 3170 if (*s != '\0')
cea2e8a9 3171 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3172 sv_catpvs( sv, " ()");
c07a80fd
PP
3173 }
3174 } else {
11343788 3175 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3176 /* Use NUL as q''-delimiter. */
3177 sv_catpvs(sv, " split(/,/,q\0");
3178 ++s;
3179 sv_catpvn(sv, s, end - s);
396482e1 3180 sv_catpvs(sv, "\0)");
c07a80fd 3181 }
b64cb68c 3182 s = end;
29a861e7 3183 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3184 }
3185 else
0544e6df 3186 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3187 return s;
79072805 3188 case 'n':
3280af22 3189 PL_minus_n = TRUE;
79072805
LW
3190 s++;
3191 return s;
3192 case 'p':
3280af22 3193 PL_minus_p = TRUE;
79072805
LW
3194 s++;
3195 return s;
3196 case 's':
f20b2998 3197 forbid_setid('s', FALSE);
3280af22 3198 PL_doswitches = TRUE;
79072805
LW
3199 s++;
3200 return s;
6537fe72
MS
3201 case 't':
3202 if (!PL_tainting)
22f7c9c9 3203 TOO_LATE_FOR('t');
6537fe72
MS
3204 s++;
3205 return s;
463ee0b2 3206 case 'T':
3280af22 3207 if (!PL_tainting)
22f7c9c9 3208 TOO_LATE_FOR('T');
463ee0b2
LW
3209 s++;
3210 return s;
79072805 3211 case 'u':
3280af22 3212 PL_do_undump = TRUE;
79072805
LW
3213 s++;
3214 return s;
3215 case 'U':
3280af22 3216 PL_unsafe = TRUE;
79072805
LW
3217 s++;
3218 return s;
3219 case 'v':
d7aa5382 3220 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3221 upg_version(PL_patchlevel, TRUE);
8e9464f1 3222#if !defined(DGUX)
46807d8e
YO
3223 {
3224 SV* level= vstringify(PL_patchlevel);
3225#ifdef PERL_PATCHNUM
23d483e2
NC
3226# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3227 SV *num = newSVpvs(PERL_PATCHNUM "*");
3228# else
3229 SV *num = newSVpvs(PERL_PATCHNUM);
3230# endif
46807d8e
YO
3231
3232 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3233 SvREFCNT_dec(level);
3234 level= num;
3235 } else {
d0a9311f 3236 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3237 SvREFCNT_dec(num);
3238 }
3239 #endif
3240 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3241 "\nThis is perl " STRINGIFY(PERL_REVISION)
3242 ", version " STRINGIFY(PERL_VERSION)
3243 ", subversion " STRINGIFY(PERL_SUBVERSION)
3244 " (%"SVf") built for " ARCHNAME, level
3245 );
46807d8e
YO
3246 SvREFCNT_dec(level);
3247 }
8e9464f1
JH
3248#else /* DGUX */
3249/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3250 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3251 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3252 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3253 PerlIO_printf(PerlIO_stdout(),
3254 Perl_form(aTHX_ " built under %s at %s %s\n",
3255 OSNAME, __DATE__, __TIME__));
3256 PerlIO_printf(PerlIO_stdout(),
3257 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3258 OSVERS));
8e9464f1 3259#endif /* !DGUX */
fb73857a
PP
3260#if defined(LOCAL_PATCH_COUNT)
3261 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3262 PerlIO_printf(PerlIO_stdout(),
3263 "\n(with %d registered patch%s, "
3264 "see perl -V for more detail)",
bb7a0f54 3265 LOCAL_PATCH_COUNT,
b0e47665 3266 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3267#endif
1a30305b 3268
b0e47665 3269 PerlIO_printf(PerlIO_stdout(),
32709fdf 3270 "\n\nCopyright 1987-2010, Larry Wall\n");
79072805 3271#ifdef MSDOS
b0e47665
GS
3272 PerlIO_printf(PerlIO_stdout(),
3273 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3274#endif
3275#ifdef DJGPP
b0e47665
GS
3276 PerlIO_printf(PerlIO_stdout(),
3277 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3278 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3279#endif
79072805 3280#ifdef OS2
b0e47665
GS
3281 PerlIO_printf(PerlIO_stdout(),
3282 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3283 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3284#endif
79072805 3285#ifdef atarist
b0e47665
GS
3286 PerlIO_printf(PerlIO_stdout(),
3287 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3288#endif
a3f9223b 3289#ifdef __BEOS__
b0e47665
GS
3290 PerlIO_printf(PerlIO_stdout(),
3291 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3292#endif
1d84e8df 3293#ifdef MPE
b0e47665 3294 PerlIO_printf(PerlIO_stdout(),
e583a879 3295 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3296#endif
9d116dd7 3297#ifdef OEMVS
b0e47665
GS
3298 PerlIO_printf(PerlIO_stdout(),
3299 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3300#endif
495c5fdc 3301#ifdef __VOS__
b0e47665 3302 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3303 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3304#endif
092bebab 3305#ifdef __OPEN_VM
b0e47665
GS
3306 PerlIO_printf(PerlIO_stdout(),
3307 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3308#endif
a1a0e61e 3309#ifdef POSIX_BC
b0e47665
GS
3310 PerlIO_printf(PerlIO_stdout(),
3311 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3312#endif
f83d2536 3313#ifdef EPOC
b0e47665 3314 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3315 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3316#endif
e1caacb4 3317#ifdef UNDER_CE
b475b3e6
JH
3318 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3319 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3320 wce_hitreturn();
3321#endif
a0fd4948 3322#ifdef __SYMBIAN32__
27da23d5
JH
3323 PerlIO_printf(PerlIO_stdout(),
3324 "Symbian port by Nokia, 2004-2005\n");
3325#endif
baed7233
DL
3326#ifdef BINARY_BUILD_NOTICE
3327 BINARY_BUILD_NOTICE;
3328#endif
b0e47665
GS
3329 PerlIO_printf(PerlIO_stdout(),
3330 "\n\
79072805 3331Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3332GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3333Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3334this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3335Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3336 my_exit(0);
79072805 3337 case 'w':
b2e5e6ba 3338 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3339 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3340 }
599cee73
PM
3341 s++;
3342 return s;
3343 case 'W':
ac27b0f5 3344 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3345 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3346 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3347 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3348 s++;
3349 return s;
3350 case 'X':
ac27b0f5 3351 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3352 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3353 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3354 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3355 s++;
3356 return s;
a0d0e21e 3357 case '*':
79072805 3358 case ' ':
d3133c89
NC
3359 while( *s == ' ' )
3360 ++s;
3361 if (s[0] == '-') /* Additional switches on #! line. */
3362 return s+1;
79072805 3363 break;
a0d0e21e 3364 case '-':
79072805 3365 case 0:
51882d45 3366#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3367 case '\r':
3368#endif
79072805
LW
3369 case '\n':
3370 case '\t':
3371 break;
aa689395
PP
3372#ifdef ALTERNATE_SHEBANG
3373 case 'S': /* OS/2 needs -S on "extproc" line. */
3374 break;
3375#endif
79072805 3376 default:
cea2e8a9 3377 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3378 }
bd61b366 3379 return NULL;
79072805
LW
3380}
3381
3382/* compliments of Tom Christiansen */
3383
3384/* unexec() can be found in the Gnu emacs distribution */
ee580363 3385/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3386
3387void
864dbfa3 3388Perl_my_unexec(pTHX)
79072805 3389{
b37c2d43 3390 PERL_UNUSED_CONTEXT;
79072805 3391#ifdef UNEXEC
b37c2d43
AL
3392 SV * prog = newSVpv(BIN_EXP, 0);
3393 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3394 int status = 1;
79072805
LW
3395 extern int etext;
3396
396482e1 3397 sv_catpvs(prog, "/perl");
396482e1 3398 sv_catpvs(file, ".perldump");
79072805 3399
ee580363
GS
3400 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3401 /* unexec prints msg to stderr in case of failure */
6ad3d225 3402 PerlProc_exit(status);
79072805 3403#else
a5f75d66
AD
3404# ifdef VMS
3405# include <lib$routines.h>
3406 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3407# elif defined(WIN32) || defined(__CYGWIN__)
3408 Perl_croak(aTHX_ "dump is not supported");
aa689395 3409# else
79072805 3410 ABORT(); /* for use with undump */
aa689395 3411# endif
a5f75d66 3412#endif
79072805
LW
3413}
3414
cb68f92d
GS
3415/* initialize curinterp */
3416STATIC void
cea2e8a9 3417S_init_interp(pTHX)
cb68f92d 3418{
97aff369 3419 dVAR;
acfe0abc
GS
3420#ifdef MULTIPLICITY
3421# define PERLVAR(var,type)
3422# define PERLVARA(var,n,type)
3423# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3424# define PERLVARI(var,type,init) aTHX->var = init;
3425# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3426# else
acfe0abc
GS
3427# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3428# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3429# endif
acfe0abc 3430# include "intrpvar.h"
acfe0abc
GS
3431# undef PERLVAR
3432# undef PERLVARA
3433# undef PERLVARI
3434# undef PERLVARIC
3435#else
3436# define PERLVAR(var,type)
3437# define PERLVARA(var,n,type)
3438# define PERLVARI(var,type,init) PL_##var = init;
3439# define PERLVARIC(var,type,init) PL_##var = init;
3440# include "intrpvar.h"
acfe0abc
GS
3441# undef PERLVAR
3442# undef PERLVARA
3443# undef PERLVARI
3444# undef PERLVARIC
cb68f92d
GS
3445#endif
3446
46ab3289
NC
3447 /* As these are inside a structure, PERLVARI isn't capable of initialising
3448 them */
6c3f0a89
NC
3449 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3450 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3451}
3452
76e3520e 3453STATIC void
cea2e8a9 3454S_init_main_stash(pTHX)
79072805 3455{
97aff369 3456 dVAR;
463ee0b2 3457 GV *gv;
6e72f9df 3458
3280af22 3459 PL_curstash = PL_defstash = newHV();
23579a14
NC
3460 /* We know that the string "main" will be in the global shared string
3461 table, so it's a small saving to use it rather than allocate another
3462 8 bytes. */
18916d0d 3463 PL_curstname = newSVpvs_share("main");
fafc274c 3464 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3465 /* If we hadn't caused another reference to "main" to be in the shared
3466 string table above, then it would be worth reordering these two,
3467 because otherwise all we do is delete "main" from it as a consequence
3468 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3469 SvREFCNT_dec(GvHV(gv));
23579a14 3470 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3471 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3472 SvREADONLY_on(gv);
fafc274c
NC
3473 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3474 SVt_PVAV)));
5a5094bd 3475 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3476 GvMULTI_on(PL_incgv);
fafc274c 3477 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3478 GvMULTI_on(PL_hintgv);
fafc274c 3479 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3480 SvREFCNT_inc_simple_void(PL_defgv);
fafc274c 3481 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5a5094bd 3482 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3483 GvMULTI_on(PL_errgv);
fafc274c 3484 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22 3485 GvMULTI_on(PL_replgv);
cea2e8a9 3486 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3487#ifdef PERL_DONT_CREATE_GVSV
3488 gv_SVadd(PL_errgv);
3489#endif
38a03e6e 3490 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
ab69dbc2 3491 CLEAR_ERRSV();
3280af22 3492 PL_curstash = PL_defstash;
11faa288 3493 CopSTASH_set(&PL_compiling, PL_defstash);
5c1737d1
NC
3494 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3495 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3496 SVt_PVHV));
4633a7c4 <