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Move the close-on-exec logic to one place, at the end of S_open_script().
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall 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
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC
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
43c0c913
NC
27#ifdef PERL_IS_MINIPERL
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
39#endif
40
2982a345
NC
41#ifdef USE_KERN_PROC_PATHNAME
42# include <sys/sysctl.h>
43#endif
44
ae60cb46
NC
45#ifdef USE_NSGETEXECUTABLEPATH
46# include <mach-o/dyld.h>
47#endif
48
2aa47728 49#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
50# ifdef I_SYSUIO
51# include <sys/uio.h>
52# endif
53
54union control_un {
55 struct cmsghdr cm;
56 char control[CMSG_SPACE(sizeof(int))];
57};
58
2aa47728
NC
59#endif
60
5311654c
JH
61#ifdef __BEOS__
62# define HZ 1000000
63#endif
64
65#ifndef HZ
66# ifdef CLK_TCK
67# define HZ CLK_TCK
68# else
69# define HZ 60
70# endif
71#endif
72
7114a2d2 73#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 74char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
75#endif
76
acfe0abc 77static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 78
cc69b689 79#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 80/* Drop everything. Heck, don't even try to call it */
cc69b689
NC
81# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
82#else
ec2019ad 83/* Drop almost everything */
cc69b689 84# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 85#endif
8d063cd8 86
d6f07c05
AL
87#define CALL_BODY_SUB(myop) \
88 if (PL_op == (myop)) \
139d0ce6 89 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
90 if (PL_op) \
91 CALLRUNOPS(aTHX);
92
93#define CALL_LIST_BODY(cv) \
94 PUSHMARK(PL_stack_sp); \
9a8aa25b 95 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 96
e6827a76 97static void
daa7d858 98S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 99{
27da23d5 100 dVAR;
e6827a76
NC
101 if (!PL_curinterp) {
102 PERL_SET_INTERP(my_perl);
3db8f154 103#if defined(USE_ITHREADS)
e6827a76
NC
104 INIT_THREADS;
105 ALLOC_THREAD_KEY;
106 PERL_SET_THX(my_perl);
107 OP_REFCNT_INIT;
e8570548 108 OP_CHECK_MUTEX_INIT;
71ad1b0c 109 HINTS_REFCNT_INIT;
e6827a76 110 MUTEX_INIT(&PL_dollarzero_mutex);
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111 MUTEX_INIT(&PL_my_ctx_mutex);
112# endif
e6827a76 113 }
c0bce9aa
NC
114#if defined(USE_ITHREADS)
115 else
116#else
117 /* This always happens for non-ithreads */
118#endif
119 {
e6827a76
NC
120 PERL_SET_THX(my_perl);
121 }
122}
06d86050 123
cbec8ebe
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124
125/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
126
127void
128Perl_sys_init(int* argc, char*** argv)
129{
4fc0badb 130 dVAR;
7918f24d
NC
131
132 PERL_ARGS_ASSERT_SYS_INIT;
133
cbec8ebe
DM
134 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
135 PERL_UNUSED_ARG(argv);
136 PERL_SYS_INIT_BODY(argc, argv);
137}
138
139void
140Perl_sys_init3(int* argc, char*** argv, char*** env)
141{
4fc0badb 142 dVAR;
7918f24d
NC
143
144 PERL_ARGS_ASSERT_SYS_INIT3;
145
cbec8ebe
DM
146 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
147 PERL_UNUSED_ARG(argv);
148 PERL_UNUSED_ARG(env);
149 PERL_SYS_INIT3_BODY(argc, argv, env);
150}
151
152void
d0820ef1 153Perl_sys_term()
cbec8ebe 154{
4fc0badb 155 dVAR;
bf81751b
DM
156 if (!PL_veto_cleanup) {
157 PERL_SYS_TERM_BODY();
158 }
cbec8ebe
DM
159}
160
161
32e30700
GS
162#ifdef PERL_IMPLICIT_SYS
163PerlInterpreter *
7766f137
GS
164perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
165 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
166 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
167 struct IPerlDir* ipD, struct IPerlSock* ipS,
168 struct IPerlProc* ipP)
169{
170 PerlInterpreter *my_perl;
7918f24d
NC
171
172 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
173
9f653bb5 174 /* Newx() needs interpreter, so call malloc() instead */
32e30700 175 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 176 S_init_tls_and_interp(my_perl);
32e30700
GS
177 Zero(my_perl, 1, PerlInterpreter);
178 PL_Mem = ipM;
7766f137
GS
179 PL_MemShared = ipMS;
180 PL_MemParse = ipMP;
32e30700
GS
181 PL_Env = ipE;
182 PL_StdIO = ipStd;
183 PL_LIO = ipLIO;
184 PL_Dir = ipD;
185 PL_Sock = ipS;
186 PL_Proc = ipP;
7cb608b5 187 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 188
32e30700
GS
189 return my_perl;
190}
191#else
954c1994
GS
192
193/*
ccfc67b7
JH
194=head1 Embedding Functions
195
954c1994
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196=for apidoc perl_alloc
197
198Allocates a new Perl interpreter. See L<perlembed>.
199
200=cut
201*/
202
93a17b20 203PerlInterpreter *
cea2e8a9 204perl_alloc(void)
79072805 205{
cea2e8a9 206 PerlInterpreter *my_perl;
79072805 207
9f653bb5 208 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 209 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 210
e6827a76 211 S_init_tls_and_interp(my_perl);
7cb608b5 212#ifndef PERL_TRACK_MEMPOOL
07409e01 213 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
214#else
215 Zero(my_perl, 1, PerlInterpreter);
216 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
217 return my_perl;
218#endif
79072805 219}
32e30700 220#endif /* PERL_IMPLICIT_SYS */
79072805 221
954c1994
GS
222/*
223=for apidoc perl_construct
224
225Initializes a new Perl interpreter. See L<perlembed>.
226
227=cut
228*/
229
79072805 230void
0cb96387 231perl_construct(pTHXx)
79072805 232{
27da23d5 233 dVAR;
7918f24d
NC
234
235 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
236
8990e307 237#ifdef MULTIPLICITY
54aff467 238 init_interp();
ac27b0f5 239 PL_perl_destruct_level = 1;
54aff467 240#else
7918f24d 241 PERL_UNUSED_ARG(my_perl);
54aff467
GS
242 if (PL_perl_destruct_level > 0)
243 init_interp();
244#endif
34caed6d
DM
245 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
246
34caed6d
DM
247 /* set read-only and try to insure than we wont see REFCNT==0
248 very often */
249
250 SvREADONLY_on(&PL_sv_undef);
251 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
252
253 sv_setpv(&PL_sv_no,PL_No);
254 /* value lookup in void context - happens to have the side effect
a43d94f2
NC
255 of caching the numeric forms. However, as &PL_sv_no doesn't contain
256 a string that is a valid numer, we have to turn the public flags by
257 hand: */
34caed6d 258 SvNV(&PL_sv_no);
c1939273 259 SvIV(&PL_sv_no);
a43d94f2
NC
260 SvIOK_on(&PL_sv_no);
261 SvNOK_on(&PL_sv_no);
34caed6d
DM
262 SvREADONLY_on(&PL_sv_no);
263 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
264
265 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 266 SvNV(&PL_sv_yes);
c1939273 267 SvIV(&PL_sv_yes);
34caed6d
DM
268 SvREADONLY_on(&PL_sv_yes);
269 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
270
271 SvREADONLY_on(&PL_sv_placeholder);
272 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
273
274 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 275#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 276 PL_pidstatus = newHV();
ca0c25f6 277#endif
79072805 278
396482e1 279 PL_rs = newSVpvs("\n");
dc92893f 280
cea2e8a9 281 init_stacks();
79072805 282
748a9306 283 init_ids();
a5f75d66 284
312caa8e 285 JMPENV_BOOTSTRAP;
f86702cc
PP
286 STATUS_ALL_SUCCESS;
287
0672f40e 288 init_i18nl10n(1);
36477c24 289 SET_NUMERIC_STANDARD();
0b5b802d 290
ab821d7f 291#if defined(LOCAL_PATCH_COUNT)
3280af22 292 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
293#endif
294
52853b95
GS
295#ifdef HAVE_INTERP_INTERN
296 sys_intern_init();
297#endif
298
3a1ee7e8 299 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 300
3280af22
NIS
301 PL_fdpid = newAV(); /* for remembering popen pids by fd */
302 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 303 PL_errors = newSVpvs("");
76f68e9b
MHM
304 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
305 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
306 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 307#ifdef USE_ITHREADS
402d2eb1
NC
308 /* First entry is a list of empty elements. It needs to be initialised
309 else all hell breaks loose in S_find_uninit_var(). */
310 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 311 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 312#endif
e5dd39fc 313#ifdef USE_REENTRANT_API
59bd0823 314 Perl_reentrant_init(aTHX);
e5dd39fc 315#endif
3d47000e
AB
316
317 /* Note that strtab is a rather special HV. Assumptions are made
318 about not iterating on it, and not adding tie magic to it.
319 It is properly deallocated in perl_destruct() */
320 PL_strtab = newHV();
321
3d47000e
AB
322 HvSHAREKEYS_off(PL_strtab); /* mandatory */
323 hv_ksplit(PL_strtab, 512);
324
0631ea03
AB
325#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
326 _dyld_lookup_and_bind
327 ("__environ", (unsigned long *) &environ_pointer, NULL);
328#endif /* environ */
329
2f42fcb0
JH
330#ifndef PERL_MICRO
331# ifdef USE_ENVIRON_ARRAY
0631ea03 332 PL_origenviron = environ;
2f42fcb0 333# endif
0631ea03
AB
334#endif
335
5311654c 336 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 337 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
338 * BeOS has those, but returns the wrong value.
339 * The HZ if not originally defined has been by now
340 * been defined as CLK_TCK, if available. */
dbc1d986 341#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
342 PL_clocktick = sysconf(_SC_CLK_TCK);
343 if (PL_clocktick <= 0)
344#endif
345 PL_clocktick = HZ;
346
081fc587
AB
347 PL_stashcache = newHV();
348
e8e3635e 349 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 350 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 351
27da23d5
JH
352#ifdef HAS_MMAP
353 if (!PL_mmap_page_size) {
354#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
355 {
356 SETERRNO(0, SS_NORMAL);
357# ifdef _SC_PAGESIZE
358 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
359# else
360 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
361# endif
362 if ((long) PL_mmap_page_size < 0) {
363 if (errno) {
44f8325f 364 SV * const error = ERRSV;
d4c19fe8 365 SvUPGRADE(error, SVt_PV);
0510663f 366 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
367 }
368 else
369 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
370 }
371 }
372#else
373# ifdef HAS_GETPAGESIZE
374 PL_mmap_page_size = getpagesize();
375# else
376# if defined(I_SYS_PARAM) && defined(PAGESIZE)
377 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
378# endif
379# endif
380#endif
381 if (PL_mmap_page_size <= 0)
382 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
383 (IV) PL_mmap_page_size);
384 }
385#endif /* HAS_MMAP */
386
387#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
388 PL_timesbase.tms_utime = 0;
389 PL_timesbase.tms_stime = 0;
390 PL_timesbase.tms_cutime = 0;
391 PL_timesbase.tms_cstime = 0;
392#endif
393
7d113631
NC
394 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
395
a3e6e81e 396 PL_registered_mros = newHV();
9e169432
NC
397 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
398 HvMAX(PL_registered_mros) = 0;
a3e6e81e 399
8990e307 400 ENTER;
79072805
LW
401}
402
954c1994 403/*
62375a60
NIS
404=for apidoc nothreadhook
405
406Stub that provides thread hook for perl_destruct when there are
407no threads.
408
409=cut
410*/
411
412int
4e9e3734 413Perl_nothreadhook(pTHX)
62375a60 414{
96a5add6 415 PERL_UNUSED_CONTEXT;
62375a60
NIS
416 return 0;
417}
418
41e4abd8
NC
419#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
420void
421Perl_dump_sv_child(pTHX_ SV *sv)
422{
423 ssize_t got;
bf357333
NC
424 const int sock = PL_dumper_fd;
425 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
426 union control_un control;
427 struct msghdr msg;
808ad2d0 428 struct iovec vec[2];
bf357333 429 struct cmsghdr *cmptr;
808ad2d0
NC
430 int returned_errno;
431 unsigned char buffer[256];
41e4abd8 432
7918f24d
NC
433 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
434
bf357333 435 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
436 return;
437
438 PerlIO_flush(Perl_debug_log);
439
bf357333
NC
440 /* All these shenanigans are to pass a file descriptor over to our child for
441 it to dump out to. We can't let it hold open the file descriptor when it
442 forks, as the file descriptor it will dump to can turn out to be one end
443 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 444 be open, the wait would be forever.) */
bf357333
NC
445
446 msg.msg_control = control.control;
447 msg.msg_controllen = sizeof(control.control);
448 /* We're a connected socket so we don't need a destination */
449 msg.msg_name = NULL;
450 msg.msg_namelen = 0;
451 msg.msg_iov = vec;
808ad2d0 452 msg.msg_iovlen = 1;
bf357333
NC
453
454 cmptr = CMSG_FIRSTHDR(&msg);
455 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
456 cmptr->cmsg_level = SOL_SOCKET;
457 cmptr->cmsg_type = SCM_RIGHTS;
458 *((int *)CMSG_DATA(cmptr)) = 1;
459
460 vec[0].iov_base = (void*)&sv;
461 vec[0].iov_len = sizeof(sv);
462 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
463
464 if(got < 0) {
bf357333 465 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
466 abort();
467 }
bf357333
NC
468 if(got < sizeof(sv)) {
469 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
470 abort();
471 }
472
808ad2d0
NC
473 /* Return protocol is
474 int: errno value
475 unsigned char: length of location string (0 for empty)
476 unsigned char*: string (not terminated)
477 */
478 vec[0].iov_base = (void*)&returned_errno;
479 vec[0].iov_len = sizeof(returned_errno);
480 vec[1].iov_base = buffer;
481 vec[1].iov_len = 1;
482
483 got = readv(sock, vec, 2);
41e4abd8
NC
484
485 if(got < 0) {
486 perror("Debug leaking scalars parent read failed");
808ad2d0 487 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
488 abort();
489 }
808ad2d0 490 if(got < sizeof(returned_errno) + 1) {
41e4abd8 491 perror("Debug leaking scalars parent short read");
808ad2d0 492 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
493 abort();
494 }
495
808ad2d0
NC
496 if (*buffer) {
497 got = read(sock, buffer + 1, *buffer);
498 if(got < 0) {
499 perror("Debug leaking scalars parent read 2 failed");
500 PerlIO_flush(PerlIO_stderr());
501 abort();
502 }
503
504 if(got < *buffer) {
505 perror("Debug leaking scalars parent short read 2");
506 PerlIO_flush(PerlIO_stderr());
507 abort();
508 }
509 }
510
511 if (returned_errno || *buffer) {
512 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
513 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
514 returned_errno, strerror(returned_errno));
41e4abd8
NC
515 }
516}
517#endif
518
62375a60 519/*
954c1994
GS
520=for apidoc perl_destruct
521
522Shuts down a Perl interpreter. See L<perlembed>.
523
524=cut
525*/
526
31d77e54 527int
0cb96387 528perl_destruct(pTHXx)
79072805 529{
27da23d5 530 dVAR;
be2ea8ed 531 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 532 HV *hv;
2aa47728 533#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
534 pid_t child;
535#endif
8990e307 536
7918f24d
NC
537 PERL_ARGS_ASSERT_PERL_DESTRUCT;
538#ifndef MULTIPLICITY
ed6c66dd 539 PERL_UNUSED_ARG(my_perl);
7918f24d 540#endif
9d4ba2ae 541
3d22c4f0
GG
542 assert(PL_scopestack_ix == 1);
543
7766f137
GS
544 /* wait for all pseudo-forked children to finish */
545 PERL_WAIT_FOR_CHILDREN;
546
3280af22 547 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
548#ifdef DEBUGGING
549 {
9d4ba2ae
AL
550 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
551 if (s) {
e1ec3a88 552 const int i = atoi(s);
5f05dabc
PP
553 if (destruct_level < i)
554 destruct_level = i;
555 }
4633a7c4
LW
556 }
557#endif
558
27da23d5 559 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
560 dJMPENV;
561 int x = 0;
562
563 JMPENV_PUSH(x);
1b6737cc 564 PERL_UNUSED_VAR(x);
9ebf26ad 565 if (PL_endav && !PL_minus_c) {
ca7b837b 566 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 567 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 568 }
f3faeb53 569 JMPENV_POP;
26f423df 570 }
f3faeb53 571 LEAVE;
a0d0e21e 572 FREETMPS;
3d22c4f0 573 assert(PL_scopestack_ix == 0);
a0d0e21e 574
e00b64d4 575 /* Need to flush since END blocks can produce output */
f13a2bc0 576 my_fflush_all();
e00b64d4 577
16c91539 578 if (PL_threadhook(aTHX)) {
62375a60 579 /* Threads hook has vetoed further cleanup */
c301d606 580 PL_veto_cleanup = TRUE;
37038d91 581 return STATUS_EXIT;
62375a60
NIS
582 }
583
2aa47728
NC
584#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
585 if (destruct_level != 0) {
586 /* Fork here to create a child. Our child's job is to preserve the
587 state of scalars prior to destruction, so that we can instruct it
588 to dump any scalars that we later find have leaked.
589 There's no subtlety in this code - it assumes POSIX, and it doesn't
590 fail gracefully */
591 int fd[2];
592
593 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
594 perror("Debug leaking scalars socketpair failed");
595 abort();
596 }
597
598 child = fork();
599 if(child == -1) {
600 perror("Debug leaking scalars fork failed");
601 abort();
602 }
603 if (!child) {
604 /* We are the child */
3125a5a4
NC
605 const int sock = fd[1];
606 const int debug_fd = PerlIO_fileno(Perl_debug_log);
607 int f;
808ad2d0
NC
608 const char *where;
609 /* Our success message is an integer 0, and a char 0 */
b61433a9 610 static const char success[sizeof(int) + 1] = {0};
3125a5a4 611
2aa47728 612 close(fd[0]);
2aa47728 613
3125a5a4
NC
614 /* We need to close all other file descriptors otherwise we end up
615 with interesting hangs, where the parent closes its end of a
616 pipe, and sits waiting for (another) child to terminate. Only
617 that child never terminates, because it never gets EOF, because
bf357333
NC
618 we also have the far end of the pipe open. We even need to
619 close the debugging fd, because sometimes it happens to be one
620 end of a pipe, and a process is waiting on the other end for
621 EOF. Normally it would be closed at some point earlier in
622 destruction, but if we happen to cause the pipe to remain open,
623 EOF never occurs, and we get an infinite hang. Hence all the
624 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
625
626 f = sysconf(_SC_OPEN_MAX);
627 if(f < 0) {
808ad2d0
NC
628 where = "sysconf failed";
629 goto abort;
3125a5a4
NC
630 }
631 while (f--) {
632 if (f == sock)
633 continue;
3125a5a4
NC
634 close(f);
635 }
636
2aa47728
NC
637 while (1) {
638 SV *target;
bf357333
NC
639 union control_un control;
640 struct msghdr msg;
641 struct iovec vec[1];
642 struct cmsghdr *cmptr;
643 ssize_t got;
644 int got_fd;
645
646 msg.msg_control = control.control;
647 msg.msg_controllen = sizeof(control.control);
648 /* We're a connected socket so we don't need a source */
649 msg.msg_name = NULL;
650 msg.msg_namelen = 0;
651 msg.msg_iov = vec;
652 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
653
654 vec[0].iov_base = (void*)&target;
655 vec[0].iov_len = sizeof(target);
656
657 got = recvmsg(sock, &msg, 0);
2aa47728
NC
658
659 if(got == 0)
660 break;
661 if(got < 0) {
808ad2d0
NC
662 where = "recv failed";
663 goto abort;
2aa47728
NC
664 }
665 if(got < sizeof(target)) {
808ad2d0
NC
666 where = "short recv";
667 goto abort;
2aa47728 668 }
bf357333 669
808ad2d0
NC
670 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
671 where = "no cmsg";
672 goto abort;
673 }
674 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
675 where = "wrong cmsg_len";
676 goto abort;
677 }
678 if(cmptr->cmsg_level != SOL_SOCKET) {
679 where = "wrong cmsg_level";
680 goto abort;
681 }
682 if(cmptr->cmsg_type != SCM_RIGHTS) {
683 where = "wrong cmsg_type";
684 goto abort;
685 }
bf357333
NC
686
687 got_fd = *(int*)CMSG_DATA(cmptr);
688 /* For our last little bit of trickery, put the file descriptor
689 back into Perl_debug_log, as if we never actually closed it
690 */
808ad2d0
NC
691 if(got_fd != debug_fd) {
692 if (dup2(got_fd, debug_fd) == -1) {
693 where = "dup2";
694 goto abort;
695 }
696 }
2aa47728 697 sv_dump(target);
bf357333 698
2aa47728
NC
699 PerlIO_flush(Perl_debug_log);
700
808ad2d0 701 got = write(sock, &success, sizeof(success));
2aa47728
NC
702
703 if(got < 0) {
808ad2d0
NC
704 where = "write failed";
705 goto abort;
2aa47728 706 }
808ad2d0
NC
707 if(got < sizeof(success)) {
708 where = "short write";
709 goto abort;
2aa47728
NC
710 }
711 }
712 _exit(0);
808ad2d0
NC
713 abort:
714 {
715 int send_errno = errno;
716 unsigned char length = (unsigned char) strlen(where);
717 struct iovec failure[3] = {
718 {(void*)&send_errno, sizeof(send_errno)},
719 {&length, 1},
720 {(void*)where, length}
721 };
722 int got = writev(sock, failure, 3);
723 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
724 in the parent if we try to read from the socketpair after the
725 child has exited, even if there was data to read.
726 So sleep a bit to give the parent a fighting chance of
727 reading the data. */
728 sleep(2);
729 _exit((got == -1) ? errno : 0);
730 }
bf357333 731 /* End of child. */
2aa47728 732 }
41e4abd8 733 PL_dumper_fd = fd[0];
2aa47728
NC
734 close(fd[1]);
735 }
736#endif
737
ff0cee69
PP
738 /* We must account for everything. */
739
740 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
741 /* Do this now, because destroying ops can cause new SVs to be generated
742 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
743 PL_curcop to point to a valid op from which the filename structure
744 member is copied. */
745 PL_curcop = &PL_compiling;
3280af22 746 if (PL_main_root) {
4e380990
DM
747 /* ensure comppad/curpad to refer to main's pad */
748 if (CvPADLIST(PL_main_cv)) {
749 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
750 }
3280af22 751 op_free(PL_main_root);
5f66b61c 752 PL_main_root = NULL;
a0d0e21e 753 }
5f66b61c 754 PL_main_start = NULL;
aac9d523
DM
755 /* note that PL_main_cv isn't usually actually freed at this point,
756 * due to the CvOUTSIDE refs from subs compiled within it. It will
757 * get freed once all the subs are freed in sv_clean_all(), for
758 * destruct_level > 0 */
3280af22 759 SvREFCNT_dec(PL_main_cv);
601f1833 760 PL_main_cv = NULL;
ca7b837b 761 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 762
13621cfb
NIS
763 /* Tell PerlIO we are about to tear things apart in case
764 we have layers which are using resources that should
765 be cleaned up now.
766 */
767
768 PerlIO_destruct(aTHX);
769
3280af22 770 if (PL_sv_objcount) {
a0d0e21e
LW
771 /*
772 * Try to destruct global references. We do this first so that the
773 * destructors and destructees still exist. Some sv's might remain.
774 * Non-referenced objects are on their own.
775 */
a0d0e21e 776 sv_clean_objs();
bf9cdc68 777 PL_sv_objcount = 0;
8990e307
LW
778 }
779
5cd24f17 780 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 781 SvREFCNT_dec(PL_warnhook);
a0714e2c 782 PL_warnhook = NULL;
3280af22 783 SvREFCNT_dec(PL_diehook);
a0714e2c 784 PL_diehook = NULL;
5cd24f17 785
4b556e6c 786 /* call exit list functions */
3280af22 787 while (PL_exitlistlen-- > 0)
acfe0abc 788 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 789
3280af22 790 Safefree(PL_exitlist);
4b556e6c 791
1c4916e5
CB
792 PL_exitlist = NULL;
793 PL_exitlistlen = 0;
794
a3e6e81e
NC
795 SvREFCNT_dec(PL_registered_mros);
796
551a8b83 797 /* jettison our possibly duplicated environment */
4b647fb0
DM
798 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
799 * so we certainly shouldn't free it here
800 */
2f42fcb0 801#ifndef PERL_MICRO
4b647fb0 802#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 803 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
804#ifdef USE_ITHREADS
805 /* only main thread can free environ[0] contents */
806 && PL_curinterp == aTHX
807#endif
808 )
809 {
551a8b83
JH
810 I32 i;
811
812 for (i = 0; environ[i]; i++)
4b420006 813 safesysfree(environ[i]);
0631ea03 814
4b420006
JH
815 /* Must use safesysfree() when working with environ. */
816 safesysfree(environ);
551a8b83
JH
817
818 environ = PL_origenviron;
819 }
820#endif
2f42fcb0 821#endif /* !PERL_MICRO */
551a8b83 822
30985c42
JH
823 if (destruct_level == 0) {
824
825 DEBUG_P(debprofdump());
826
827#if defined(PERLIO_LAYERS)
828 /* No more IO - including error messages ! */
829 PerlIO_cleanup(aTHX);
830#endif
831
832 CopFILE_free(&PL_compiling);
833 CopSTASH_free(&PL_compiling);
834
835 /* The exit() function will do everything that needs doing. */
836 return STATUS_EXIT;
837 }
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 874 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
875 PL_unsafe = FALSE;
876
877 Safefree(PL_inplace);
bd61b366 878 PL_inplace = NULL;
a7cb1f99 879 SvREFCNT_dec(PL_patchlevel);
1e8125c6 880 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
881
882 if (PL_e_script) {
883 SvREFCNT_dec(PL_e_script);
a0714e2c 884 PL_e_script = NULL;
8ebc5c01
PP
885 }
886
bf9cdc68
RG
887 PL_perldb = 0;
888
8ebc5c01
PP
889 /* magical thingies */
890
e23d9e2f
CS
891 SvREFCNT_dec(PL_ofsgv); /* *, */
892 PL_ofsgv = NULL;
5f05dabc 893
7889fe52 894 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 895 PL_ors_sv = NULL;
8ebc5c01 896
3280af22 897 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 898 PL_rs = NULL;
dc92893f 899
d33b2eba 900 Safefree(PL_osname); /* $^O */
bd61b366 901 PL_osname = NULL;
5f05dabc 902
3280af22 903 SvREFCNT_dec(PL_statname);
a0714e2c
SS
904 PL_statname = NULL;
905 PL_statgv = NULL;
5f05dabc 906
8ebc5c01
PP
907 /* defgv, aka *_ should be taken care of elsewhere */
908
7d5ea4e7
GS
909 /* float buffer */
910 Safefree(PL_efloatbuf);
bd61b366 911 PL_efloatbuf = NULL;
7d5ea4e7
GS
912 PL_efloatsize = 0;
913
8ebc5c01 914 /* startup and shutdown function lists */
3280af22 915 SvREFCNT_dec(PL_beginav);
5a837c8f 916 SvREFCNT_dec(PL_beginav_save);
3280af22 917 SvREFCNT_dec(PL_endav);
7d30b5c4 918 SvREFCNT_dec(PL_checkav);
ece599bd 919 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
920 SvREFCNT_dec(PL_unitcheckav);
921 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 922 SvREFCNT_dec(PL_initav);
7d49f689
NC
923 PL_beginav = NULL;
924 PL_beginav_save = NULL;
925 PL_endav = NULL;
926 PL_checkav = NULL;
927 PL_checkav_save = NULL;
3c10abe3
AG
928 PL_unitcheckav = NULL;
929 PL_unitcheckav_save = NULL;
7d49f689 930 PL_initav = NULL;
5618dfe8 931
8ebc5c01 932 /* shortcuts just get cleared */
a0714e2c
SS
933 PL_envgv = NULL;
934 PL_incgv = NULL;
935 PL_hintgv = NULL;
936 PL_errgv = NULL;
937 PL_argvgv = NULL;
938 PL_argvoutgv = NULL;
939 PL_stdingv = NULL;
940 PL_stderrgv = NULL;
941 PL_last_in_gv = NULL;
942 PL_replgv = NULL;
943 PL_DBgv = NULL;
944 PL_DBline = NULL;
945 PL_DBsub = NULL;
946 PL_DBsingle = NULL;
947 PL_DBtrace = NULL;
948 PL_DBsignal = NULL;
601f1833 949 PL_DBcv = NULL;
7d49f689 950 PL_dbargs = NULL;
5c284bb0 951 PL_debstash = NULL;
8ebc5c01 952
7a1c5554 953 SvREFCNT_dec(PL_argvout_stack);
7d49f689 954 PL_argvout_stack = NULL;
8ebc5c01 955
5c831c24 956 SvREFCNT_dec(PL_modglobal);
5c284bb0 957 PL_modglobal = NULL;
5c831c24 958 SvREFCNT_dec(PL_preambleav);
7d49f689 959 PL_preambleav = NULL;
5c831c24 960 SvREFCNT_dec(PL_subname);
a0714e2c 961 PL_subname = NULL;
ca0c25f6 962#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 963 SvREFCNT_dec(PL_pidstatus);
5c284bb0 964 PL_pidstatus = NULL;
ca0c25f6 965#endif
5c831c24 966 SvREFCNT_dec(PL_toptarget);
a0714e2c 967 PL_toptarget = NULL;
5c831c24 968 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
969 PL_bodytarget = NULL;
970 PL_formtarget = NULL;
5c831c24 971
d33b2eba 972 /* free locale stuff */
b9582b6a 973#ifdef USE_LOCALE_COLLATE
d33b2eba 974 Safefree(PL_collation_name);
bd61b366 975 PL_collation_name = NULL;
b9582b6a 976#endif
d33b2eba 977
b9582b6a 978#ifdef USE_LOCALE_NUMERIC
d33b2eba 979 Safefree(PL_numeric_name);
bd61b366 980 PL_numeric_name = NULL;
a453c169 981 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 982 PL_numeric_radix_sv = NULL;
b9582b6a 983#endif
d33b2eba 984
5c831c24
GS
985 /* clear utf8 character classes */
986 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
987 SvREFCNT_dec(PL_utf8_alpha);
988 SvREFCNT_dec(PL_utf8_space);
5c831c24
GS
989 SvREFCNT_dec(PL_utf8_graph);
990 SvREFCNT_dec(PL_utf8_digit);
991 SvREFCNT_dec(PL_utf8_upper);
992 SvREFCNT_dec(PL_utf8_lower);
993 SvREFCNT_dec(PL_utf8_print);
994 SvREFCNT_dec(PL_utf8_punct);
995 SvREFCNT_dec(PL_utf8_xdigit);
996 SvREFCNT_dec(PL_utf8_mark);
997 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 998 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 999 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1000 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1001 SvREFCNT_dec(PL_utf8_idstart);
1002 SvREFCNT_dec(PL_utf8_idcont);
2726813d 1003 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 1004 PL_utf8_alnum = NULL;
a0714e2c
SS
1005 PL_utf8_alpha = NULL;
1006 PL_utf8_space = NULL;
a0714e2c
SS
1007 PL_utf8_graph = NULL;
1008 PL_utf8_digit = NULL;
1009 PL_utf8_upper = NULL;
1010 PL_utf8_lower = NULL;
1011 PL_utf8_print = NULL;
1012 PL_utf8_punct = NULL;
1013 PL_utf8_xdigit = NULL;
1014 PL_utf8_mark = NULL;
1015 PL_utf8_toupper = NULL;
1016 PL_utf8_totitle = NULL;
1017 PL_utf8_tolower = NULL;
1018 PL_utf8_tofold = NULL;
1019 PL_utf8_idstart = NULL;
1020 PL_utf8_idcont = NULL;
2726813d 1021 PL_utf8_foldclosures = NULL;
5c831c24 1022
971a9dd3 1023 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1024 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1025 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1026 cophh_free(CopHINTHASH_get(&PL_compiling));
1027 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3
NIS
1028 CopFILE_free(&PL_compiling);
1029 CopSTASH_free(&PL_compiling);
5c831c24 1030
a0d0e21e 1031 /* Prepare to destruct main symbol table. */
5f05dabc 1032
3280af22 1033 hv = PL_defstash;
ca556bcd
DM
1034 /* break ref loop *:: <=> %:: */
1035 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1036 PL_defstash = 0;
a0d0e21e 1037 SvREFCNT_dec(hv);
5c831c24 1038 SvREFCNT_dec(PL_curstname);
a0714e2c 1039 PL_curstname = NULL;
a0d0e21e 1040
5a844595
GS
1041 /* clear queued errors */
1042 SvREFCNT_dec(PL_errors);
a0714e2c 1043 PL_errors = NULL;
5a844595 1044
dd69841b
BB
1045 SvREFCNT_dec(PL_isarev);
1046
a0d0e21e 1047 FREETMPS;
9b387841 1048 if (destruct_level >= 2) {
3280af22 1049 if (PL_scopestack_ix != 0)
9b387841
NC
1050 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1051 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1052 (long)PL_scopestack_ix);
3280af22 1053 if (PL_savestack_ix != 0)
9b387841
NC
1054 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1055 "Unbalanced saves: %ld more saves than restores\n",
1056 (long)PL_savestack_ix);
3280af22 1057 if (PL_tmps_floor != -1)
9b387841
NC
1058 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1059 (long)PL_tmps_floor + 1);
a0d0e21e 1060 if (cxstack_ix != -1)
9b387841
NC
1061 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1062 (long)cxstack_ix + 1);
a0d0e21e 1063 }
8990e307 1064
776df701 1065#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1066 /* the entries in this list are allocated via SV PVX's, so get freed
1067 * in sv_clean_all */
1068 Safefree(PL_my_cxt_list);
776df701 1069#endif
57bb2458 1070
8990e307 1071 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1072
1073 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1074 while (sv_clean_all() > 2)
5226ed68
JH
1075 ;
1076
d4777f27
GS
1077 AvREAL_off(PL_fdpid); /* no surviving entries */
1078 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1079 PL_fdpid = NULL;
d33b2eba 1080
6c644e78
GS
1081#ifdef HAVE_INTERP_INTERN
1082 sys_intern_clear();
1083#endif
1084
6e72f9df
PP
1085 /* Destruct the global string table. */
1086 {
1087 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1088 * so that sv_free() won't fail on them.
80459961
NC
1089 * Now that the global string table is using a single hunk of memory
1090 * for both HE and HEK, we either need to explicitly unshare it the
1091 * correct way, or actually free things here.
6e72f9df 1092 */
80459961
NC
1093 I32 riter = 0;
1094 const I32 max = HvMAX(PL_strtab);
c4420975 1095 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1096 HE *hent = array[0];
1097
6e72f9df 1098 for (;;) {
0453d815 1099 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1100 HE * const next = HeNEXT(hent);
9014280d 1101 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1102 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1103 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1104 Safefree(hent);
1105 hent = next;
6e72f9df
PP
1106 }
1107 if (!hent) {
1108 if (++riter > max)
1109 break;
1110 hent = array[riter];
1111 }
1112 }
80459961
NC
1113
1114 Safefree(array);
1115 HvARRAY(PL_strtab) = 0;
1116 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1117 }
3280af22 1118 SvREFCNT_dec(PL_strtab);
6e72f9df 1119
e652bb2f 1120#ifdef USE_ITHREADS
c21d1a0f 1121 /* free the pointer tables used for cloning */
a0739874 1122 ptr_table_free(PL_ptr_table);
bf9cdc68 1123 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1124#endif
a0739874 1125
d33b2eba
GS
1126 /* free special SVs */
1127
1128 SvREFCNT(&PL_sv_yes) = 0;
1129 sv_clear(&PL_sv_yes);
1130 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1131 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1132
1133 SvREFCNT(&PL_sv_no) = 0;
1134 sv_clear(&PL_sv_no);
1135 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1136 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1137
9f375a43
DM
1138 {
1139 int i;
1140 for (i=0; i<=2; i++) {
1141 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1142 sv_clear(PERL_DEBUG_PAD(i));
1143 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1144 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1145 }
1146 }
1147
0453d815 1148 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1149 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1150
eba0f806
DM
1151#ifdef DEBUG_LEAKING_SCALARS
1152 if (PL_sv_count != 0) {
1153 SV* sva;
1154 SV* sv;
1155 register SV* svend;
1156
ad64d0ec 1157 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1158 svend = &sva[SvREFCNT(sva)];
1159 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1160 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1161 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1162 " flags=0x%"UVxf
fd0854ff 1163 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1164 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1165 "serial %"UVuf"\n",
574b8821
NC
1166 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1167 pTHX__VALUE,
fd0854ff
DM
1168 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1169 sv->sv_debug_line,
1170 sv->sv_debug_inpad ? "for" : "by",
1171 sv->sv_debug_optype ?
1172 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1173 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1174 sv->sv_debug_serial
fd0854ff 1175 );
2aa47728 1176#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1177 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1178#endif
eba0f806
DM
1179 }
1180 }
1181 }
1182 }
2aa47728
NC
1183#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1184 {
1185 int status;
1186 fd_set rset;
1187 /* Wait for up to 4 seconds for child to terminate.
1188 This seems to be the least effort way of timing out on reaping
1189 its exit status. */
1190 struct timeval waitfor = {4, 0};
41e4abd8 1191 int sock = PL_dumper_fd;
2aa47728
NC
1192
1193 shutdown(sock, 1);
1194 FD_ZERO(&rset);
1195 FD_SET(sock, &rset);
1196 select(sock + 1, &rset, NULL, NULL, &waitfor);
1197 waitpid(child, &status, WNOHANG);
1198 close(sock);
1199 }
1200#endif
eba0f806 1201#endif
77abb4c6
NC
1202#ifdef DEBUG_LEAKING_SCALARS_ABORT
1203 if (PL_sv_count)
1204 abort();
1205#endif
bf9cdc68 1206 PL_sv_count = 0;
eba0f806 1207
f1fac472
NC
1208#ifdef PERL_DEBUG_READONLY_OPS
1209 free(PL_slabs);
1210 PL_slabs = NULL;
1211 PL_slab_count = 0;
1212#endif
eba0f806 1213
56a2bab7 1214#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1215 /* No more IO - including error messages ! */
1216 PerlIO_cleanup(aTHX);
1217#endif
1218
9f4bd222 1219 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1220 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1221 for no arg - and will try and SvREFCNT_dec it.
1222 */
1223 SvREFCNT(&PL_sv_undef) = 0;
1224 SvREADONLY_off(&PL_sv_undef);
1225
3280af22 1226 Safefree(PL_origfilename);
bd61b366 1227 PL_origfilename = NULL;
3280af22 1228 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1229 PL_reg_start_tmp = (char**)NULL;
1230 PL_reg_start_tmpl = 0;
43c5f42d 1231 Safefree(PL_reg_curpm);
82ba1be6 1232 Safefree(PL_reg_poscache);
dd28f7bb 1233 free_tied_hv_pool();
3280af22 1234 Safefree(PL_op_mask);
cf36064f 1235 Safefree(PL_psig_name);
bf9cdc68 1236 PL_psig_name = (SV**)NULL;
d525a7b2 1237 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1238 {
1239 /* We need to NULL PL_psig_pend first, so that
1240 signal handlers know not to use it */
1241 int *psig_save = PL_psig_pend;
1242 PL_psig_pend = (int*)NULL;
1243 Safefree(psig_save);
1244 }
a0714e2c 1245 PL_formfeed = NULL;
6e72f9df 1246 nuke_stacks();
bf9cdc68
RG
1247 PL_tainting = FALSE;
1248 PL_taint_warn = FALSE;
3280af22 1249 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1250 PL_debug = 0;
ac27b0f5 1251
a0d0e21e 1252 DEBUG_P(debprofdump());
d33b2eba 1253
e5dd39fc 1254#ifdef USE_REENTRANT_API
10bc17b6 1255 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1256#endif
1257
612f20c3
GS
1258 sv_free_arenas();
1259
5d9a96ca
DM
1260 while (PL_regmatch_slab) {
1261 regmatch_slab *s = PL_regmatch_slab;
1262 PL_regmatch_slab = PL_regmatch_slab->next;
1263 Safefree(s);
1264 }
1265
fc36a67e
PP
1266 /* As the absolutely last thing, free the non-arena SV for mess() */
1267
3280af22 1268 if (PL_mess_sv) {
f350b448
NC
1269 /* we know that type == SVt_PVMG */
1270
9c63abab 1271 /* it could have accumulated taint magic */
f350b448
NC
1272 MAGIC* mg;
1273 MAGIC* moremagic;
1274 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1275 moremagic = mg->mg_moremagic;
1276 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1277 && mg->mg_len >= 0)
1278 Safefree(mg->mg_ptr);
1279 Safefree(mg);
9c63abab 1280 }
f350b448 1281
fc36a67e 1282 /* we know that type >= SVt_PV */
8bd4d4c5 1283 SvPV_free(PL_mess_sv);
3280af22
NIS
1284 Safefree(SvANY(PL_mess_sv));
1285 Safefree(PL_mess_sv);
a0714e2c 1286 PL_mess_sv = NULL;
fc36a67e 1287 }
37038d91 1288 return STATUS_EXIT;
79072805
LW
1289}
1290
954c1994
GS
1291/*
1292=for apidoc perl_free
1293
1294Releases a Perl interpreter. See L<perlembed>.
1295
1296=cut
1297*/
1298
79072805 1299void
0cb96387 1300perl_free(pTHXx)
79072805 1301{
5174512c
NC
1302 dVAR;
1303
7918f24d
NC
1304 PERL_ARGS_ASSERT_PERL_FREE;
1305
c301d606
DM
1306 if (PL_veto_cleanup)
1307 return;
1308
7cb608b5 1309#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1310 {
1311 /*
1312 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1313 * value as we're probably hunting memory leaks then
1314 */
1315 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1316 if (!s || atoi(s) == 0) {
4fd0a9b8 1317 const U32 old_debug = PL_debug;
55ef9aae
MHM
1318 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1319 thread at thread exit. */
4fd0a9b8
NC
1320 if (DEBUG_m_TEST) {
1321 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1322 "free this thread's memory\n");
1323 PL_debug &= ~ DEBUG_m_FLAG;
1324 }
55ef9aae
MHM
1325 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1326 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1327 PL_debug = old_debug;
55ef9aae
MHM
1328 }
1329 }
7cb608b5
NC
1330#endif
1331
acfe0abc 1332#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1333# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1334 {
acfe0abc 1335# ifdef NETWARE
7af12a34 1336 void *host = nw_internal_host;
acfe0abc 1337# else
7af12a34 1338 void *host = w32_internal_host;
acfe0abc 1339# endif
7af12a34 1340 PerlMem_free(aTHXx);
acfe0abc 1341# ifdef NETWARE
7af12a34 1342 nw_delete_internal_host(host);
acfe0abc 1343# else
7af12a34 1344 win32_delete_internal_host(host);
acfe0abc 1345# endif
7af12a34 1346 }
1c0ca838
GS
1347# else
1348 PerlMem_free(aTHXx);
1349# endif
acfe0abc
GS
1350#else
1351 PerlMem_free(aTHXx);
76e3520e 1352#endif
79072805
LW
1353}
1354
b7f7fff6 1355#if defined(USE_ITHREADS)
aebd1ac7
GA
1356/* provide destructors to clean up the thread key when libperl is unloaded */
1357#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1358
826955bd 1359#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1360#pragma fini "perl_fini"
666ad1ec
GA
1361#elif defined(__sun) && !defined(__GNUC__)
1362#pragma fini (perl_fini)
aebd1ac7
GA
1363#endif
1364
0dbb1585
AL
1365static void
1366#if defined(__GNUC__)
1367__attribute__((destructor))
aebd1ac7 1368#endif
de009b76 1369perl_fini(void)
aebd1ac7 1370{
27da23d5 1371 dVAR;
c301d606 1372 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1373 FREE_THREAD_KEY;
1374}
1375
1376#endif /* WIN32 */
1377#endif /* THREADS */
1378
4b556e6c 1379void
864dbfa3 1380Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1381{
97aff369 1382 dVAR;
3280af22
NIS
1383 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1384 PL_exitlist[PL_exitlistlen].fn = fn;
1385 PL_exitlist[PL_exitlistlen].ptr = ptr;
1386 ++PL_exitlistlen;
4b556e6c
JD
1387}
1388
b7975bdd
NC
1389STATIC void
1390S_set_caret_X(pTHX) {
97aff369 1391 dVAR;
fafc274c 1392 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1393 if (tmpgv) {
0f1723e1 1394 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1395#if defined(OS2)
1396 sv_setpv(caret_x, os2_execname(aTHX));
1397#else
2982a345
NC
1398# ifdef USE_KERN_PROC_PATHNAME
1399 size_t size = 0;
1400 int mib[4];
1401 mib[0] = CTL_KERN;
1402 mib[1] = KERN_PROC;
1403 mib[2] = KERN_PROC_PATHNAME;
1404 mib[3] = -1;
1405
1406 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1407 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1408 sv_grow(caret_x, size);
1409
1410 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1411 && size > 2) {
1412 SvPOK_only(caret_x);
1413 SvCUR_set(caret_x, size - 1);
1414 SvTAINT(caret_x);
1415 return;
1416 }
1417 }
ae60cb46
NC
1418# elif defined(USE_NSGETEXECUTABLEPATH)
1419 char buf[1];
1420 uint32_t size = sizeof(buf);
ae60cb46
NC
1421
1422 _NSGetExecutablePath(buf, &size);
1423 if (size < MAXPATHLEN * MAXPATHLEN) {
1424 sv_grow(caret_x, size);
1425 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1426 char *const tidied = realpath(SvPVX(caret_x), NULL);
1427 if (tidied) {
1428 sv_setpv(caret_x, tidied);
1429 free(tidied);
1430 } else {
1431 SvPOK_only(caret_x);
1432 SvCUR_set(caret_x, size);
1433 }
1434 return;
1435 }
1436 }
2982a345 1437# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1438 char buf[MAXPATHLEN];
1439 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1440
1441 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1442 includes a spurious NUL which will cause $^X to fail in system
1443 or backticks (this will prevent extensions from being built and
1444 many tests from working). readlink is not meant to add a NUL.
1445 Normal readlink works fine.
1446 */
1447 if (len > 0 && buf[len-1] == '\0') {
1448 len--;
1449 }
1450
1451 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1452 returning the text "unknown" from the readlink rather than the path
1453 to the executable (or returning an error from the readlink). Any
1454 valid path has a '/' in it somewhere, so use that to validate the
1455 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1456 */
1457 if (len > 0 && memchr(buf, '/', len)) {
1458 sv_setpvn(caret_x, buf, len);
82552a95 1459 return;
700dd4f8 1460 }
82552a95
NC
1461# endif
1462 /* Fallback to this: */
0f1723e1 1463 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1464#endif
b7975bdd
NC
1465 }
1466}
1467
954c1994
GS
1468/*
1469=for apidoc perl_parse
1470
1471Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1472
1473=cut
1474*/
1475
03d9f026
FC
1476#define SET_CURSTASH(newstash) \
1477 if (PL_curstash != newstash) { \
1478 SvREFCNT_dec(PL_curstash); \
1479 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1480 }
1481
79072805 1482int
0cb96387 1483perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1484{
27da23d5 1485 dVAR;
6224f72b 1486 I32 oldscope;
6224f72b 1487 int ret;
db36c5a1 1488 dJMPENV;
8d063cd8 1489
7918f24d
NC
1490 PERL_ARGS_ASSERT_PERL_PARSE;
1491#ifndef MULTIPLICITY
ed6c66dd 1492 PERL_UNUSED_ARG(my_perl);
7918f24d 1493#endif
9d4ba2ae 1494
b0891165
JH
1495#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1496 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1497 * This MUST be done before any hash stores or fetches take place.
486ec47a 1498 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1499 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1500 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1501 if (!PL_rehash_seed_set)
1502 PL_rehash_seed = get_hash_seed();
b0891165 1503 {
9d4ba2ae 1504 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1505
1b6737cc
AL
1506 if (s && (atoi(s) == 1))
1507 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1508 }
1509#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1510
3280af22 1511 PL_origargc = argc;
e2975953 1512 PL_origargv = argv;
a0d0e21e 1513
a2722ac9
GA
1514 if (PL_origalen != 0) {
1515 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1516 }
1517 else {
3cb9023d
JH
1518 /* Set PL_origalen be the sum of the contiguous argv[]
1519 * elements plus the size of the env in case that it is
e9137a8e 1520 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1521 * as the maximum modifiable length of $0. In the worst case
1522 * the area we are able to modify is limited to the size of
43c32782 1523 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1524 * --jhi */
e1ec3a88 1525 const char *s = NULL;
54bfe034 1526 int i;
1b6737cc 1527 const UV mask =
7d8e7db3 1528 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1529 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1530 const UV aligned =
43c32782
JH
1531 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1532
1533 /* See if all the arguments are contiguous in memory. Note
1534 * that 'contiguous' is a loose term because some platforms
1535 * align the argv[] and the envp[]. If the arguments look
1536 * like non-aligned, assume that they are 'strictly' or
1537 * 'traditionally' contiguous. If the arguments look like
1538 * aligned, we just check that they are within aligned
1539 * PTRSIZE bytes. As long as no system has something bizarre
1540 * like the argv[] interleaved with some other data, we are
1541 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1542 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1543 while (*s) s++;
1544 for (i = 1; i < PL_origargc; i++) {
1545 if ((PL_origargv[i] == s + 1
43c32782 1546#ifdef OS2
c8941eeb 1547 || PL_origargv[i] == s + 2
43c32782 1548#endif
c8941eeb
JH
1549 )
1550 ||
1551 (aligned &&
1552 (PL_origargv[i] > s &&
1553 PL_origargv[i] <=
1554 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1555 )
1556 {
1557 s = PL_origargv[i];
1558 while (*s) s++;
1559 }
1560 else
1561 break;
54bfe034 1562 }
54bfe034 1563 }
a4a109c2
JD
1564
1565#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1566 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1567 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1568 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1569 ||
1570 (aligned &&
1571 (PL_origenviron[0] > s &&
1572 PL_origenviron[0] <=
1573 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1574 )
1575 {
9d419b5f 1576#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1577 s = PL_origenviron[0];
1578 while (*s) s++;
1579#endif
bd61b366 1580 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1581 /* Force copy of environment. */
1582 for (i = 1; PL_origenviron[i]; i++) {
1583 if (PL_origenviron[i] == s + 1
1584 ||
1585 (aligned &&
1586 (PL_origenviron[i] > s &&
1587 PL_origenviron[i] <=
1588 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1589 )
1590 {
1591 s = PL_origenviron[i];
1592 while (*s) s++;
1593 }
1594 else
1595 break;
54bfe034 1596 }
43c32782 1597 }
54bfe034 1598 }
a4a109c2
JD
1599#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1600
2d2af554 1601 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1602 }
1603
3280af22 1604 if (PL_do_undump) {
a0d0e21e
LW
1605
1606 /* Come here if running an undumped a.out. */
1607
3280af22
NIS
1608 PL_origfilename = savepv(argv[0]);
1609 PL_do_undump = FALSE;
a0d0e21e 1610 cxstack_ix = -1; /* start label stack again */
748a9306 1611 init_ids();
b7975bdd
NC
1612 assert (!PL_tainted);
1613 TAINT;
1614 S_set_caret_X(aTHX);
1615 TAINT_NOT;
a0d0e21e
LW
1616 init_postdump_symbols(argc,argv,env);
1617 return 0;
1618 }
1619
3280af22 1620 if (PL_main_root) {
3280af22 1621 op_free(PL_main_root);
5f66b61c 1622 PL_main_root = NULL;
ff0cee69 1623 }
5f66b61c 1624 PL_main_start = NULL;
3280af22 1625 SvREFCNT_dec(PL_main_cv);
601f1833 1626 PL_main_cv = NULL;
79072805 1627
3280af22
NIS
1628 time(&PL_basetime);
1629 oldscope = PL_scopestack_ix;
599cee73 1630 PL_dowarn = G_WARN_OFF;
f86702cc 1631
14dd3ad8 1632 JMPENV_PUSH(ret);
6224f72b 1633 switch (ret) {
312caa8e 1634 case 0:
14dd3ad8 1635 parse_body(env,xsinit);
9ebf26ad 1636 if (PL_unitcheckav) {
3c10abe3 1637 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1638 }
1639 if (PL_checkav) {
ca7b837b 1640 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1641 call_list(oldscope, PL_checkav);
9ebf26ad 1642 }
14dd3ad8
GS
1643 ret = 0;
1644 break;
6224f72b
GS
1645 case 1:
1646 STATUS_ALL_FAILURE;
1647 /* FALL THROUGH */
1648 case 2:
1649 /* my_exit() was called */
3280af22 1650 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1651 LEAVE;
1652 FREETMPS;
03d9f026 1653 SET_CURSTASH(PL_defstash);
9ebf26ad 1654 if (PL_unitcheckav) {
3c10abe3 1655 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1656 }
1657 if (PL_checkav) {
ca7b837b 1658 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1659 call_list(oldscope, PL_checkav);
9ebf26ad 1660 }
37038d91 1661 ret = STATUS_EXIT;
14dd3ad8 1662 break;
6224f72b 1663 case 3:
bf49b057 1664 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1665 ret = 1;
1666 break;
6224f72b 1667 }
14dd3ad8
GS
1668 JMPENV_POP;
1669 return ret;
1670}
1671
4a5df386
NC
1672/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1673 miniperl, and we need to see those flags reflected in the values here. */
1674
1675/* What this returns is subject to change. Use the public interface in Config.
1676 */
1677static void
1678S_Internals_V(pTHX_ CV *cv)
1679{
1680 dXSARGS;
1681#ifdef LOCAL_PATCH_COUNT
1682 const int local_patch_count = LOCAL_PATCH_COUNT;
1683#else
1684 const int local_patch_count = 0;
1685#endif
2dc296d2 1686 const int entries = 3 + local_patch_count;
4a5df386
NC
1687 int i;
1688 static char non_bincompat_options[] =
1689# ifdef DEBUGGING
1690 " DEBUGGING"
1691# endif
1692# ifdef NO_MATHOMS
0d311fbe 1693 " NO_MATHOMS"
4a5df386
NC
1694# endif
1695# ifdef PERL_DISABLE_PMC
1696 " PERL_DISABLE_PMC"
1697# endif
1698# ifdef PERL_DONT_CREATE_GVSV
1699 " PERL_DONT_CREATE_GVSV"
1700# endif
9a044a43
NC
1701# ifdef PERL_EXTERNAL_GLOB
1702 " PERL_EXTERNAL_GLOB"
1703# endif
4a5df386
NC
1704# ifdef PERL_IS_MINIPERL
1705 " PERL_IS_MINIPERL"
1706# endif
1707# ifdef PERL_MALLOC_WRAP
1708 " PERL_MALLOC_WRAP"
1709# endif
1710# ifdef PERL_MEM_LOG
1711 " PERL_MEM_LOG"
1712# endif
1713# ifdef PERL_MEM_LOG_NOIMPL
1714 " PERL_MEM_LOG_NOIMPL"
1715# endif
c3cf41ec
NC
1716# ifdef PERL_PRESERVE_IVUV
1717 " PERL_PRESERVE_IVUV"
1718# endif
c051e30b
NC
1719# ifdef PERL_RELOCATABLE_INCPUSH
1720 " PERL_RELOCATABLE_INCPUSH"
1721# endif
4a5df386
NC
1722# ifdef PERL_USE_DEVEL
1723 " PERL_USE_DEVEL"
1724# endif
1725# ifdef PERL_USE_SAFE_PUTENV
1726 " PERL_USE_SAFE_PUTENV"
1727# endif
a3749cf3
NC
1728# ifdef UNLINK_ALL_VERSIONS
1729 " UNLINK_ALL_VERSIONS"
1730# endif
de618ee4
NC
1731# ifdef USE_ATTRIBUTES_FOR_PERLIO
1732 " USE_ATTRIBUTES_FOR_PERLIO"
1733# endif
4a5df386
NC
1734# ifdef USE_FAST_STDIO
1735 " USE_FAST_STDIO"
1736# endif
98548bdf
NC
1737# ifdef USE_LOCALE
1738 " USE_LOCALE"
1739# endif
98548bdf
NC
1740# ifdef USE_LOCALE_CTYPE
1741 " USE_LOCALE_CTYPE"
1742# endif
5a8d8935
NC
1743# ifdef USE_PERL_ATOF
1744 " USE_PERL_ATOF"
1745# endif
0d311fbe
NC
1746# ifdef USE_SITECUSTOMIZE
1747 " USE_SITECUSTOMIZE"
1748# endif
4a5df386
NC
1749 ;
1750 PERL_UNUSED_ARG(cv);
1751 PERL_UNUSED_ARG(items);
1752
1753 EXTEND(SP, entries);
1754
1755 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1756 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1757 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1758
1759#ifdef __DATE__
1760# ifdef __TIME__
1761 PUSHs(Perl_newSVpvn_flags(aTHX_
1762 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1763 SVs_TEMP));
1764# else
1765 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1766 SVs_TEMP));
1767# endif
1768#else
1769 PUSHs(&PL_sv_undef);
1770#endif
1771
4a5df386
NC
1772 for (i = 1; i <= local_patch_count; i++) {
1773 /* This will be an undef, if PL_localpatches[i] is NULL. */
1774 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1775 }
1776
1777 XSRETURN(entries);
1778}
1779
be71fc8f
NC
1780#define INCPUSH_UNSHIFT 0x01
1781#define INCPUSH_ADD_OLD_VERS 0x02
1782#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1783#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1784#define INCPUSH_NOT_BASEDIR 0x10
1785#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1786#define INCPUSH_ADD_SUB_DIRS \
1787 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1788
312caa8e 1789STATIC void *
14dd3ad8 1790S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1791{
27da23d5 1792 dVAR;
2f9285f8 1793 PerlIO *rsfp;
312caa8e 1794 int argc = PL_origargc;
8f42b153 1795 char **argv = PL_origargv;
e1ec3a88 1796 const char *scriptname = NULL;
312caa8e 1797 VOL bool dosearch = FALSE;
c7030b81 1798 register char c;
737c24fc 1799 bool doextract = FALSE;
bd61b366 1800 const char *cddir = NULL;
ab019eaa 1801#ifdef USE_SITECUSTOMIZE
20ef40cf 1802 bool minus_f = FALSE;
ab019eaa 1803#endif
009d90df 1804 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1805 bool add_read_e_script = FALSE;
009d90df 1806
ca7b837b 1807 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1808
009d90df 1809 SvGROW(linestr_sv, 80);
76f68e9b 1810 sv_setpvs(linestr_sv,"");
312caa8e 1811
6224f72b 1812 init_main_stash();
54310121 1813
c7030b81
NC
1814 {
1815 const char *s;
6224f72b
GS
1816 for (argc--,argv++; argc > 0; argc--,argv++) {
1817 if (argv[0][0] != '-' || !argv[0][1])
1818 break;
6224f72b
GS
1819 s = argv[0]+1;
1820 reswitch:
47f56822 1821 switch ((c = *s)) {
729a02f2 1822 case 'C':
1d5472a9
GS
1823#ifndef PERL_STRICT_CR
1824 case '\r':
1825#endif
6224f72b
GS
1826 case ' ':
1827 case '0':
1828 case 'F':
1829 case 'a':
1830 case 'c':
1831 case 'd':
1832 case 'D':
1833 case 'h':
1834 case 'i':
1835 case 'l':
1836 case 'M':
1837 case 'm':
1838 case 'n':
1839 case 'p':
1840 case 's':
1841 case 'u':
1842 case 'U':
1843 case 'v':
599cee73
PM
1844 case 'W':
1845 case 'X':
6224f72b 1846 case 'w':
97bd5664 1847 if ((s = moreswitches(s)))
6224f72b
GS
1848 goto reswitch;
1849 break;
33b78306 1850
1dbad523 1851 case 't':
22f7c9c9 1852 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1853 if( !PL_tainting ) {
1854 PL_taint_warn = TRUE;
1855 PL_tainting = TRUE;
1856 }
1857 s++;
1858 goto reswitch;
6224f72b 1859 case 'T':
22f7c9c9 1860 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1861 PL_tainting = TRUE;
317ea90d 1862 PL_taint_warn = FALSE;
6224f72b
GS
1863 s++;
1864 goto reswitch;
f86702cc 1865
bc9b29db
RH
1866 case 'E':
1867 PL_minus_E = TRUE;
1868 /* FALL THROUGH */
6224f72b 1869 case 'e':
f20b2998 1870 forbid_setid('e', FALSE);
3280af22 1871 if (!PL_e_script) {
396482e1 1872 PL_e_script = newSVpvs("");
5486870f 1873 add_read_e_script = TRUE;
6224f72b
GS
1874 }
1875 if (*++s)
3280af22 1876 sv_catpv(PL_e_script, s);
6224f72b 1877 else if (argv[1]) {
3280af22 1878 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1879 argc--,argv++;
1880 }
1881 else
47f56822 1882 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1883 sv_catpvs(PL_e_script, "\n");
6224f72b 1884 break;
afe37c7d 1885
20ef40cf 1886 case 'f':
f5542d3a 1887#ifdef USE_SITECUSTOMIZE
20ef40cf 1888 minus_f = TRUE;
f5542d3a 1889#endif
20ef40cf
GA
1890 s++;
1891 goto reswitch;
1892
6224f72b 1893 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1894 forbid_setid('I', FALSE);
bd61b366 1895 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1896 argc--,argv++;
1897 }
6224f72b 1898 if (s && *s) {
0df16ed7 1899 STRLEN len = strlen(s);
55b4bc1c 1900 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1901 }
1902 else
a67e862a 1903 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1904 break;
6224f72b 1905 case 'S':
f20b2998 1906 forbid_setid('S', FALSE);
6224f72b
GS
1907 dosearch = TRUE;
1908 s++;
1909 goto reswitch;
1910 case 'V':
7edfd0ef
NC
1911 {
1912 SV *opts_prog;
1913
7edfd0ef 1914 if (*++s != ':') {
37ca4a5b 1915 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1916 }
1917 else {
1918 ++s;
1919 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1920 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1921 0, s, 0);
1922 s += strlen(s);
1923 }
37ca4a5b 1924 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1925 /* don't look for script or read stdin */
1926 scriptname = BIT_BUCKET;
1927 goto reswitch;
6224f72b 1928 }
6224f72b 1929 case 'x':
737c24fc 1930 doextract = TRUE;
6224f72b 1931 s++;
304334da 1932 if (*s)
f4c556ac 1933 cddir = s;
6224f72b
GS
1934 break;
1935 case 0:
1936 break;
1937 case '-':
1938 if (!*++s || isSPACE(*s)) {
1939 argc--,argv++;
1940 goto switch_end;
1941 }
ee8bc8b7
NC
1942 /* catch use of gnu style long options.
1943 Both of these exit immediately. */
1944 if (strEQ(s, "version"))
1945 minus_v();
1946 if (strEQ(s, "help"))
1947 usage();
6224f72b
GS
1948 s--;
1949 /* FALL THROUGH */
1950 default:
cea2e8a9 1951 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1952 }
1953 }
c7030b81
NC
1954 }
1955
6224f72b 1956 switch_end:
54310121 1957
c7030b81
NC
1958 {
1959 char *s;
1960
f675dbe5
CB
1961 if (
1962#ifndef SECURE_INTERNAL_GETENV
1963 !PL_tainting &&
1964#endif
cf756827 1965 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1966 {
74288ac8
GS
1967 while (isSPACE(*s))
1968 s++;
317ea90d 1969 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1970 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1971 PL_tainting = TRUE;
317ea90d
MS
1972 PL_taint_warn = FALSE;
1973 }
74288ac8 1974 else {
bd61b366 1975 char *popt_copy = NULL;
74288ac8 1976 while (s && *s) {
54913509 1977 const char *d;
74288ac8
GS
1978 while (isSPACE(*s))
1979 s++;
1980 if (*s == '-') {
1981 s++;
1982 if (isSPACE(*s))
1983 continue;
1984 }
4ea8f8fb 1985 d = s;
74288ac8
GS
1986 if (!*s)
1987 break;
2b622f1a 1988 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1989 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1990 while (++s && *s) {
1991 if (isSPACE(*s)) {
cf756827 1992 if (!popt_copy) {
bfa6c418
NC
1993 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1994 s = popt_copy + (s - d);
1995 d = popt_copy;
cf756827 1996 }
4ea8f8fb
MS
1997 *s++ = '\0';
1998 break;
1999 }
2000 }
1c4db469 2001 if (*d == 't') {
317ea90d
MS
2002 if( !PL_tainting ) {
2003 PL_taint_warn = TRUE;
2004 PL_tainting = TRUE;
2005 }
1c4db469 2006 } else {
97bd5664 2007 moreswitches(d);
1c4db469 2008 }
6224f72b 2009 }
6224f72b
GS
2010 }
2011 }
c7030b81 2012 }
a0d0e21e 2013
c29067d7
CH
2014 /* Set $^X early so that it can be used for relocatable paths in @INC */
2015 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2016 assert (!PL_tainted);
2017 TAINT;
2018 S_set_caret_X(aTHX);
2019 TAINT_NOT;
2020
43c0c913 2021#if defined(USE_SITECUSTOMIZE)
20ef40cf 2022 if (!minus_f) {
43c0c913 2023 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2024 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2025 ie a q() operator with a NUL byte as a the delimiter. This avoids
2026 problems with pathnames containing (say) ' */
43c0c913
NC
2027# ifdef PERL_IS_MINIPERL
2028 AV *const inc = GvAV(PL_incgv);
2029 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2030
2031 if (inc0) {
2032 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2033 Perl_newSVpvf(aTHX_
fc81b718
NC
2034 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2035 0, *inc0, 0,
2036 0, *inc0, 0));
43c0c913
NC
2037 }
2038# else
2039 /* SITELIB_EXP is a function call on Win32. */
c29067d7
CH
2040 const char *const raw_sitelib = SITELIB_EXP;
2041 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2042 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2043 INCPUSH_CAN_RELOCATE);
2044 const char *const sitelib = SvPVX(sitelib_sv);
29a861e7 2045 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc 2046 Perl_newSVpvf(aTHX_
fc81b718
NC
2047 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2048 0, sitelib, 0,
2049 0, sitelib, 0));
c29067d7
CH
2050 assert (SvREFCNT(sitelib_sv) == 1);
2051 SvREFCNT_dec(sitelib_sv);
43c0c913 2052# endif
20ef40cf
GA
2053 }
2054#endif
2055
6224f72b
GS
2056 if (!scriptname)
2057 scriptname = argv[0];
3280af22 2058 if (PL_e_script) {
6224f72b
GS
2059 argc++,argv--;
2060 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2061 }
bd61b366 2062 else if (scriptname == NULL) {
6224f72b
GS
2063#ifdef MSDOS
2064 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2065 moreswitches("h");
6224f72b
GS
2066#endif
2067 scriptname = "-";
2068 }
2069
b7975bdd 2070 assert (!PL_tainted);
2cace6ac 2071 init_perllib();
6224f72b 2072
a52eba0e 2073 {
f20b2998 2074 bool suidscript = FALSE;
829372d3 2075
8d113837 2076 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2077 if (!rsfp) {
2078 rsfp = PerlIO_stdin();
2079 }
6224f72b 2080
2f9285f8 2081 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2082 linestr_sv, rsfp);
6224f72b 2083
64ca3a65 2084#ifndef PERL_MICRO
a52eba0e
NC
2085# if defined(SIGCHLD) || defined(SIGCLD)
2086 {
2087# ifndef SIGCHLD
2088# define SIGCHLD SIGCLD
2089# endif
2090 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2091 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2092 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2093 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2094 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2095 }
0b5b802d 2096 }
a52eba0e 2097# endif
64ca3a65 2098#endif
0b5b802d 2099
737c24fc 2100 if (doextract) {
faef540c 2101
f20b2998 2102 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2103 setuid scripts. */
2104 forbid_setid('x', suidscript);
f20b2998 2105 /* Hence you can't get here if suidscript is true */
faef540c 2106
2f9285f8 2107 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2108 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2109 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2110 }
f4c556ac 2111 }
6224f72b 2112
ea726b52 2113 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2114 CvUNIQUE_on(PL_compcv);
2115
dd2155a4 2116 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2117
dd69841b
BB
2118 PL_isarev = newHV();
2119
0c4f7ff0 2120 boot_core_PerlIO();
6224f72b 2121 boot_core_UNIVERSAL();
e1a479c5 2122 boot_core_mro();
4a5df386 2123 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2124
2125 if (xsinit)
acfe0abc 2126 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2127#ifndef PERL_MICRO
d0d72822 2128#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2129 init_os_extras();
6224f72b 2130#endif
64ca3a65 2131#endif
6224f72b 2132
29209bc5 2133#ifdef USE_SOCKS
1b9c9cf5
DH
2134# ifdef HAS_SOCKS5_INIT
2135 socks5_init(argv[0]);
2136# else
29209bc5 2137 SOCKSinit(argv[0]);
1b9c9cf5 2138# endif
ac27b0f5 2139#endif
29209bc5 2140
6224f72b
GS
2141 init_predump_symbols();
2142 /* init_postdump_symbols not currently designed to be called */
2143 /* more than once (ENV isn't cleared first, for example) */
2144 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2145 if (!PL_do_undump)
6224f72b
GS
2146 init_postdump_symbols(argc,argv,env);
2147
27da23d5
JH
2148 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2149 * or explicitly in some platforms.
085a54d9 2150 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2151 * look like the user wants to use UTF-8. */
a0fd4948 2152#if defined(__SYMBIAN32__)
27da23d5
JH
2153 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2154#endif
e27b5b51 2155# ifndef PERL_IS_MINIPERL
06e66572
JH
2156 if (PL_unicode) {
2157 /* Requires init_predump_symbols(). */
a05d7ebb 2158 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2159 IO* io;
2160 PerlIO* fp;
2161 SV* sv;
2162
a05d7ebb 2163 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2164 * and the default open disciplines. */
a05d7ebb
JH
2165 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2166 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2167 (fp = IoIFP(io)))
2168 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2169 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2170 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2171 (fp = IoOFP(io)))
2172 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2173 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2174 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2175 (fp = IoOFP(io)))
2176 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2177 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2178 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2179 SVt_PV)))) {
a05d7ebb
JH
2180 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2181 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2182 if (in) {
2183 if (out)
76f68e9b 2184 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2185 else
76f68e9b 2186 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2187 }
2188 else if (out)
76f68e9b 2189 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2190 SvSETMAGIC(sv);
2191 }
b310b053
JH
2192 }
2193 }
e27b5b51 2194#endif
b310b053 2195
c7030b81
NC
2196 {
2197 const char *s;
4ffa73a3
JH
2198 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2199 if (strEQ(s, "unsafe"))
2200 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2201 else if (strEQ(s, "safe"))
2202 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2203 else
2204 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2205 }
c7030b81 2206 }
4ffa73a3 2207
81d86705 2208#ifdef PERL_MAD
c7030b81
NC
2209 {
2210 const char *s;
81d86705
NC
2211 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2212 PL_madskills = 1;
2213 PL_minus_c = 1;
2214 if (!s || !s[0])
2215 PL_xmlfp = PerlIO_stdout();
2216 else {
2217 PL_xmlfp = PerlIO_open(s, "w");
2218 if (!PL_xmlfp)
2219 Perl_croak(aTHX_ "Can't open %s", s);
2220 }
1a9a51d4 2221 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2222 }
c7030b81
NC
2223 }
2224
2225 {
2226 const char *s;
81d86705
NC
2227 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2228 PL_madskills = atoi(s);
1a9a51d4 2229 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2230 }
c7030b81 2231 }
81d86705
NC
2232#endif
2233
8eaa0acf 2234 lex_start(linestr_sv, rsfp, 0);
219f7226 2235 PL_subname = newSVpvs("main");
6224f72b 2236
5486870f
DM
2237 if (add_read_e_script)
2238 filter_add(read_e_script, NULL);
2239
6224f72b
GS
2240 /* now parse the script */
2241
93189314 2242 SETERRNO(0,SS_NORMAL);
28ac2b49 2243 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2244 if (PL_minus_c)
cea2e8a9 2245 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2246 else {
cea2e8a9 2247 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2248 PL_origfilename);
6224f72b
GS
2249 }
2250 }
57843af0 2251 CopLINE_set(PL_curcop, 0);
03d9f026 2252 SET_CURSTASH(PL_defstash);
3280af22
NIS
2253 if (PL_e_script) {
2254 SvREFCNT_dec(PL_e_script);
a0714e2c 2255 PL_e_script = NULL;
6224f72b
GS
2256 }
2257
3280af22 2258 if (PL_do_undump)
6224f72b
GS
2259 my_unexec();
2260
57843af0
GS
2261 if (isWARN_ONCE) {
2262 SAVECOPFILE(PL_curcop);
2263 SAVECOPLINE(PL_curcop);
3280af22 2264 gv_check(PL_defstash);
57843af0 2265 }
6224f72b
GS
2266
2267 LEAVE;
2268 FREETMPS;
2269
2270#ifdef MYMALLOC
f6a607bc
RGS
2271 {
2272 const char *s;
6224f72b
GS
2273 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2274 dump_mstats("after compilation:");
f6a607bc 2275 }
6224f72b
GS
2276#endif
2277
2278 ENTER;
febb3a6d 2279 PL_restartjmpenv = NULL;
3280af22 2280 PL_restartop = 0;
312caa8e 2281 return NULL;
6224f72b
GS
2282}
2283
954c1994
GS
2284/*
2285=for apidoc perl_run
2286
2287Tells a Perl interpreter to run. See L<perlembed>.
2288
2289=cut
2290*/
2291
6224f72b 2292int
0cb96387 2293perl_run(pTHXx)
6224f72b 2294{
97aff369 2295 dVAR;
6224f72b 2296 I32 oldscope;
14dd3ad8 2297 int ret = 0;
db36c5a1 2298 dJMPENV;
6224f72b 2299
7918f24d
NC
2300 PERL_ARGS_ASSERT_PERL_RUN;
2301#ifndef MULTIPLICITY
ed6c66dd 2302 PERL_UNUSED_ARG(my_perl);
7918f24d 2303#endif
9d4ba2ae 2304
3280af22 2305 oldscope = PL_scopestack_ix;
96e176bf
CL
2306#ifdef VMS
2307 VMSISH_HUSHED = 0;
2308#endif
6224f72b 2309
14dd3ad8 2310 JMPENV_PUSH(ret);
6224f72b
GS
2311 switch (ret) {
2312 case 1:
2313 cxstack_ix = -1; /* start context stack again */
312caa8e 2314 goto redo_body;
14dd3ad8 2315 case 0: /* normal completion */
14dd3ad8
GS
2316 redo_body:
2317 run_body(oldscope);
14dd3ad8
GS
2318 /* FALL THROUGH */
2319 case 2: /* my_exit() */
3280af22 2320 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2321 LEAVE;
2322 FREETMPS;
03d9f026 2323 SET_CURSTASH(PL_defstash);
3a1ee7e8 2324 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2325 PL_endav && !PL_minus_c) {
ca7b837b 2326 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2327 call_list(oldscope, PL_endav);
9ebf26ad 2328 }
6224f72b
GS
2329#ifdef MYMALLOC
2330 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2331 dump_mstats("after execution: ");
2332#endif
37038d91 2333 ret = STATUS_EXIT;
14dd3ad8 2334 break;
6224f72b 2335 case 3:
312caa8e
CS
2336 if (PL_restartop) {
2337 POPSTACK_TO(PL_mainstack);
2338 goto redo_body;
6224f72b 2339 }
5637ef5b 2340 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2341 FREETMPS;
14dd3ad8
GS
2342 ret = 1;
2343 break;
6224f72b
GS
2344 }
2345
14dd3ad8
GS
2346 JMPENV_POP;
2347 return ret;
312caa8e
CS
2348}
2349
dd374669 2350STATIC void
14dd3ad8
GS
2351S_run_body(pTHX_ I32 oldscope)
2352{
97aff369 2353 dVAR;
6224f72b 2354 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2355 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2356
3280af22 2357 if (!PL_restartop) {
81d86705
NC
2358#ifdef PERL_MAD
2359 if (PL_xmlfp) {
2360 xmldump_all();
2361 exit(0); /* less likely to core dump than my_exit(0) */
2362 }
2363#endif
cf2782cd 2364#ifdef DEBUGGING
f0e3f042
CS
2365 if (DEBUG_x_TEST || DEBUG_B_TEST)
2366 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2367 if (!DEBUG_q_TEST)
2368 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2369#endif
6224f72b 2370
3280af22 2371 if (PL_minus_c) {
bf49b057 2372 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2373 my_exit(0);
2374 }
3280af22 2375 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2376 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2377 if (PL_initav) {
ca7b837b 2378 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2379 call_list(oldscope, PL_initav);
9ebf26ad 2380 }
f1fac472
NC
2381#ifdef PERL_DEBUG_READONLY_OPS
2382 Perl_pending_Slabs_to_ro(aTHX);
2383#endif
6224f72b
GS
2384 }
2385
2386 /* do it */
2387
ca7b837b 2388 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2389
3280af22 2390 if (PL_restartop) {
febb3a6d 2391 PL_restartjmpenv = NULL;
533c011a 2392 PL_op = PL_restartop;
3280af22 2393 PL_restartop = 0;
cea2e8a9 2394 CALLRUNOPS(aTHX);
6224f72b 2395 }
3280af22
NIS
2396 else if (PL_main_start) {
2397 CvDEPTH(PL_main_cv) = 1;
533c011a 2398 PL_op = PL_main_start;
cea2e8a9 2399 CALLRUNOPS(aTHX);
6224f72b 2400 }
f6b3007c
JH
2401 my_exit(0);
2402 /* NOTREACHED */
6224f72b
GS
2403}
2404
954c1994 2405/*
ccfc67b7
JH
2406=head1 SV Manipulation Functions
2407
954c1994
GS
2408=for apidoc p||get_sv
2409
64ace3f8
NC
2410Returns the SV of the specified Perl scalar. C<flags> are passed to
2411C<gv_fetchpv>. If C<GV_ADD> is set and the
2412Perl variable does not exist then it will be created. If C<flags> is zero
2413and the variable does not exist then NULL is returned.
954c1994
GS
2414
2415=cut
2416*/
2417
6224f72b 2418SV*
64ace3f8 2419Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2420{
2421 GV *gv;
7918f24d
NC
2422
2423 PERL_ARGS_ASSERT_GET_SV;
2424
64ace3f8 2425 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2426 if (gv)
2427 return GvSV(gv);
a0714e2c 2428 return NULL;
6224f72b
GS
2429}
2430
954c1994 2431/*
ccfc67b7
JH
2432=head1 Array Manipulation Functions
2433
954c1994
GS
2434=for apidoc p||get_av
2435
f0b90de1
SF
2436Returns the AV of the specified Perl global or package array with the given
2437name (so it won't work on lexical variables). C<flags> are passed
2438to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2439Perl variable does not exist then it will be created. If C<flags> is zero
2440and the variable does not exist then NULL is returned.
954c1994 2441
f0b90de1
SF
2442Perl equivalent: C<@{"$name"}>.
2443
954c1994
GS
2444=cut
2445*/
2446
6224f72b 2447AV*
cbfd0a87 2448Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2449{
cbfd0a87 2450 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2451
2452 PERL_ARGS_ASSERT_GET_AV;
2453
cbfd0a87 2454 if (flags)
6224f72b
GS
2455 return GvAVn(gv);
2456 if (gv)
2457 return GvAV(gv);
7d49f689 2458 return NULL;
6224f72b
GS
2459}
2460
954c1994 2461/*
ccfc67b7
JH
2462=head1 Hash Manipulation Functions
2463
954c1994
GS
2464=for apidoc p||get_hv
2465
6673a63c
NC
2466Returns the HV of the specified Perl hash. C<flags> are passed to
2467C<gv_fetchpv>. If C<GV_ADD> is set and the
2468Perl variable does not exist then it will be created. If C<flags> is zero
2469and the variable does not exist then NULL is returned.
954c1994
GS
2470
2471=cut
2472*/
2473
6224f72b 2474HV*
6673a63c 2475Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2476{
6673a63c 2477 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2478
2479 PERL_ARGS_ASSERT_GET_HV;
2480
6673a63c 2481 if (flags)
a0d0e21e
LW
2482 return GvHVn(gv);
2483 if (gv)
2484 return GvHV(gv);
5c284bb0 2485 return NULL;
a0d0e21e
LW
2486}
2487
954c1994 2488/*
ccfc67b7
JH
2489=head1 CV Manipulation Functions
2490
780a5241
NC
2491=for apidoc p||get_cvn_flags
2492
2493Returns the CV of the specified Perl subroutine. C<flags> are passed to
2494C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2495exist then it will be declared (which has the same effect as saying
2496C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2497then NULL is returned.
2498
954c1994
GS
2499=for apidoc p||get_cv
2500
780a5241 2501Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2502
2503=cut
2504*/
2505
a0d0e21e 2506CV*
780a5241 2507Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2508{
780a5241 2509 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2510 /* XXX this is probably not what they think they're getting.
2511 * It has the same effect as "sub name;", i.e. just a forward
2512 * declaration! */
7918f24d
NC
2513
2514 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2515
780a5241 2516 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2517 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2518 return newSUB(start_subparse(FALSE, 0),
780a5241 2519 newSVOP(OP_CONST, 0, sv),
5f66b61c 2520 NULL, NULL);
780a5241 2521 }
a0d0e21e 2522 if (gv)
8ebc5c01 2523 return GvCVu(gv);
601f1833 2524 return NULL;
a0d0e21e
LW
2525}
2526
2c67934f
NC
2527/* Nothing in core calls this now, but we can't replace it with a macro and
2528 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2529CV*
2530Perl_get_cv(pTHX_ const char *name, I32 flags)
2531{
7918f24d
NC
2532 PERL_ARGS_ASSERT_GET_CV;
2533
780a5241
NC
2534 return get_cvn_flags(name, strlen(name), flags);
2535}
2536
79072805
LW
2537/* Be sure to refetch the stack pointer after calling these routines. */
2538
954c1994 2539/*
ccfc67b7
JH
2540
2541=head1 Callback Functions
2542
954c1994
GS
2543=for apidoc p||call_argv
2544
f0b90de1
SF
2545Performs a callback to the specified named and package-scoped Perl subroutine
2546with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2547
2548Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2549
2550=cut
2551*/
2552
a0d0e21e 2553I32
8f42b153 2554Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2555
8ac85365
NIS
2556 /* See G_* flags in cop.h */
2557 /* null terminated arg list */
8990e307 2558{
97aff369 2559 dVAR;
a0d0e21e 2560 dSP;
8990e307 2561
7918f24d
NC
2562 PERL_ARGS_ASSERT_CALL_ARGV;
2563
924508f0 2564 PUSHMARK(SP);
a0d0e21e 2565 if (argv) {
8990e307 2566 while (*argv) {
6e449a3a 2567 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2568 argv++;
2569 }
a0d0e21e 2570 PUTBACK;
8990e307 2571 }
864dbfa3 2572 return call_pv(sub_name, flags);
8990e307
LW
2573}
2574
954c1994
GS
2575/*
2576=for apidoc p||call_pv
2577
2578Performs a callback to the specified Perl sub. See L<perlcall>.
2579
2580=cut
2581*/
2582
a0d0e21e 2583I32
864dbfa3 2584Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2585 /* name of the subroutine */
2586 /* See G_* flags in cop.h */
a0d0e21e 2587{
7918f24d
NC
2588 PERL_ARGS_ASSERT_CALL_PV;
2589
0da0e728 2590 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2591}
2592
954c1994
GS
2593/*
2594=for apidoc p||call_method
2595
2596Performs a callback to the specified Perl method. The blessed object must
2597be on the stack. See L<perlcall>.
2598
2599=cut
2600*/
2601
a0d0e21e 2602I32
864dbfa3 2603Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2604 /* name of the subroutine */
2605 /* See G_* flags in cop.h */
a0d0e21e 2606{
46ca9bac 2607 STRLEN len;
7918f24d
NC
2608 PERL_ARGS_ASSERT_CALL_METHOD;
2609
46ca9bac 2610 len = strlen(methname);
2611
2612 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2613 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2614}
2615
2616/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2617/*
2618=for apidoc p||call_sv
2619
2620Performs a callback to the Perl sub whose name is in the SV. See
2621L<perlcall>.
2622
2623=cut
2624*/
2625
a0d0e21e 2626I32
001d637e 2627Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2628 /* See G_* flags in cop.h */
a0d0e21e 2629{
27da23d5 2630 dVAR; dSP;
a0d0e21e 2631 LOGOP myop; /* fake syntax tree node */
968b3946 2632 UNOP method_op;
aa689395 2633 I32 oldmark;
8ea43dc8 2634 VOL I32 retval = 0;
a0d0e21e 2635 I32 oldscope;
54310121 2636 bool oldcatch = CATCH_GET;
6224f72b 2637 int ret;
c4420975 2638 OP* const oldop = PL_op;
db36c5a1 2639 dJMPENV;
1e422769 2640
7918f24d
NC
2641 PERL_ARGS_ASSERT_CALL_SV;
2642
a0d0e21e
LW
2643 if (flags & G_DISCARD) {
2644 ENTER;
2645 SAVETMPS;
2646 }
2f8edad0
NC
2647 if (!(flags & G_WANT)) {
2648 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2649 */
2650 flags |= G_SCALAR;
2651 }
a0d0e21e 2652
aa689395 2653 Zero(&myop, 1, LOGOP);
5f66b61c 2654 myop.op_next = NULL;
f51d4af5 2655 if (!(flags & G_NOARGS))
aa689395 2656 myop.op_flags |= OPf_STACKED;
4f911530 2657 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2658 SAVEOP();
533c011a 2659 PL_op = (OP*)&myop;
aa689395 2660
3280af22
NIS
2661 EXTEND(PL_stack_sp, 1);
2662 *++PL_stack_sp = sv;
aa689395 2663 oldmark = TOPMARK;
3280af22 2664 oldscope = PL_scopestack_ix;
a0d0e21e 2665
3280af22 2666 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2667 /* Handle first BEGIN of -d. */
3280af22 2668 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2669 /* Try harder, since this may have been a sighandler, thus
2670 * curstash may be meaningless. */
ea726b52 2671 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2672 && !(flags & G_NODEBUG))
533c011a 2673 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2674
968b3946
GS
2675 if (flags & G_METHOD) {
2676 Zero(&method_op, 1, UNOP);
2677 method_op.op_next = PL_op;
2678 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2679 method_op.op_type = OP_METHOD;
968b3946 2680 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2681 myop.op_type = OP_ENTERSUB;
f39d0b86 2682 PL_op = (OP*)&method_op;
968b3946
GS
2683 }
2684
312caa8e 2685 if (!(flags & G_EVAL)) {
0cdb2077 2686 CATCH_SET(TRUE);
d6f07c05 2687 CALL_BODY_SUB((OP*)&myop);
312caa8e 2688 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2689 CATCH_SET(oldcatch);
312caa8e
CS
2690 }
2691 else {
d78bda3d 2692 myop.op_other = (OP*)&myop;
3280af22 2693 PL_markstack_ptr--;
edb2152a 2694 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2695 PL_markstack_ptr++;
a0d0e21e 2696
14dd3ad8 2697 JMPENV_PUSH(ret);
edb2152a 2698
6224f72b
GS
2699 switch (ret) {
2700 case 0:
14dd3ad8 2701 redo_body:
d6f07c05 2702 CALL_BODY_SUB((OP*)&myop);
312caa8e 2703 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2704 if (!(flags & G_KEEPERR)) {
ab69dbc2 2705 CLEAR_ERRSV();
8433848b 2706 }
a0d0e21e 2707 break;
6224f72b 2708 case 1:
f86702cc 2709 STATUS_ALL_FAILURE;
a0d0e21e 2710 /* FALL THROUGH */
6224f72b 2711 case 2:
a0d0e21e 2712 /* my_exit() was called */
03d9f026 2713 SET_CURSTASH(PL_defstash);
a0d0e21e 2714 FREETMPS;
14dd3ad8 2715 JMPENV_POP;
f86702cc 2716 my_exit_jump();
a0d0e21e 2717 /* NOTREACHED */
6224f72b 2718 case 3:
3280af22 2719 if (PL_restartop) {
febb3a6d 2720 PL_restartjmpenv = NULL;
533c011a 2721 PL_op = PL_restartop;
3280af22 2722 PL_restartop = 0;
312caa8e 2723 goto redo_body;
a0d0e21e 2724 }
3280af22 2725 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2726 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2727 retval = 0;
2728 else {
2729 retval = 1;
3280af22 2730 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2731 }
312caa8e 2732 break;
a0d0e21e 2733 }
a0d0e21e 2734
edb2152a
NC
2735 if (PL_scopestack_ix > oldscope)
2736 delete_eval_scope();
14dd3ad8 2737 JMPENV_POP;
a0d0e21e 2738 }
1e422769 2739
a0d0e21e 2740 if (flags & G_DISCARD) {
3280af22 2741 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2742 retval = 0;
2743 FREETMPS;
2744 LEAVE;
2745 }
533c011a 2746 PL_op = oldop;
a0d0e21e
LW
2747 return retval;
2748}
2749
6e72f9df 2750/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2751
954c1994
GS
2752/*
2753=for apidoc p||eval_sv
2754
be064c4a
DM
2755Tells Perl to C<eval> the string in the SV. It supports the same flags
2756as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2757
2758=cut
2759*/
2760
a0d0e21e 2761I32
864dbfa3 2762Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2763
8ac85365 2764 /* See G_* flags in cop.h */
a0d0e21e 2765{
97aff369 2766 dVAR;
924508f0 2767 dSP;
a0d0e21e 2768 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2769 VOL I32 oldmark = SP - PL_stack_base;
2770 VOL I32 retval = 0;
6224f72b 2771 int ret;
c4420975 2772 OP* const oldop = PL_op;
db36c5a1 2773 dJMPENV;
84902520 2774
7918f24d
NC
2775 PERL_ARGS_ASSERT_EVAL_SV;
2776
4633a7c4
LW
2777 if (flags & G_DISCARD) {
2778 ENTER;
2779 SAVETMPS;
2780 }
2781
462e5cf6 2782 SAVEOP();
533c011a
NIS
2783 PL_op = (OP*)&myop;
2784 Zero(PL_op, 1, UNOP);
3280af22
NIS
2785 EXTEND(PL_stack_sp, 1);
2786 *++PL_stack_sp = sv;
79072805 2787
4633a7c4
LW
2788 if (!(flags & G_NOARGS))
2789 myop.op_flags = OPf_STACKED;
5f66b61c 2790 myop.op_next = NULL;
6e72f9df 2791 myop.op_type = OP_ENTEREVAL;
4f911530 2792 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2793 if (flags & G_KEEPERR)
2794 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2795
dedbcade
DM
2796 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2797 * before a PUSHEVAL, which corrupts the stack after a croak */
2798 TAINT_PROPER("eval_sv()");
2799
14dd3ad8 2800 JMPENV_PUSH(ret);
6224f72b
GS
2801 switch (ret) {
2802 case 0:
14dd3ad8 2803 redo_body:
2ba65d5f
DM
2804 if (PL_op == (OP*)(&myop)) {
2805 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2806 if (!PL_op)
2807 goto fail; /* failed in compilation */
2808 }
4aca2f62 2809 CALLRUNOPS(aTHX);
312caa8e 2810 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2811 if (!(flags & G_KEEPERR)) {
ab69dbc2 2812 CLEAR_ERRSV();
8433848b 2813 }
4633a7c4 2814 break;
6224f72b 2815 case 1:
f86702cc 2816 STATUS_ALL_FAILURE;
4633a7c4 2817 /* FALL THROUGH */
6224f72b 2818 case 2:
4633a7c4 2819 /* my_exit() was called */
03d9f026 2820 SET_CURSTASH(PL_defstash);
4633a7c4 2821 FREETMPS;
14dd3ad8 2822 JMPENV_POP;
f86702cc 2823 my_exit_jump();
4633a7c4 2824 /* NOTREACHED */
6224f72b 2825 case 3:
3280af22 2826 if (PL_restartop) {
febb3a6d 2827 PL_restartjmpenv = NULL;
533c011a 2828 PL_op = PL_restartop;
3280af22 2829 PL_restartop = 0;
312caa8e 2830 goto redo_body;
4633a7c4 2831 }
4aca2f62 2832 fail:
3280af22 2833 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2834 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2835 retval = 0;
2836 else {
2837 retval = 1;
3280af22 2838 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2839 }
312caa8e 2840 break;
4633a7c4
LW
2841 }
2842
14dd3ad8 2843 JMPENV_POP;
4633a7c4 2844 if (flags & G_DISCARD) {
3280af22 2845 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2846 retval = 0;
2847 FREETMPS;
2848 LEAVE;
2849 }
533c011a 2850 PL_op = oldop;
4633a7c4
LW
2851 return retval;
2852}
2853
954c1994
GS
2854/*
2855=for apidoc p||eval_pv
2856
2857Tells Perl to C<eval> the given string and return an SV* result.
2858
2859=cut
2860*/
2861
137443ea 2862SV*
864dbfa3 2863Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2864{
97aff369 2865 dVAR;
137443ea
PP
2866 dSP;
2867 SV* sv = newSVpv(p, 0);
2868
7918f24d
NC
2869 PERL_ARGS_ASSERT_EVAL_PV;
2870
864dbfa3 2871 eval_sv(sv, G_SCALAR);
137443ea
PP
2872 SvREFCNT_dec(sv);
2873
2874 SPAGAIN;
2875 sv = POPs;
2876 PUTBACK;
2877
2d8e6c8d 2878 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2879 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2880 }
137443ea
PP
2881
2882 return sv;
2883}
2884
4633a7c4
LW
2885/* Require a module. */
2886
954c1994 2887/*
ccfc67b7
JH
2888=head1 Embedding Functions
2889
954c1994
GS
2890=for apidoc p||require_pv
2891
7d3fb230
BS
2892Tells Perl to C<require> the file named by the string argument. It is
2893analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2894implemented that way; consider using load_module instead.
954c1994 2895
7d3fb230 2896=cut */
954c1994 2897
4633a7c4 2898void
864dbfa3 2899Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2900{
97aff369 2901 dVAR;
d3acc0f7 2902 dSP;
97aff369 2903 SV* sv;
7918f24d
NC
2904
2905 PERL_ARGS_ASSERT_REQUIRE_PV;
2906
e788e7d3 2907 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2908 PUTBACK;
be41e5d9
NC
2909 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2910 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2911 SPAGAIN;
2912 POPSTACK;
79072805
LW
2913}
2914
76e3520e 2915STATIC void
b6f82619 2916S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2917{
ab821d7f 2918 /* This message really ought to be max 23 lines.
75c72d73 2919 * Removed -h because the user already knows that option. Others? */
fb73857a 2920
1566c39d
NC
2921 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2922 minimum of 509 character string literals. */
27da23d5 2923 static const char * const usage_msg[] = {
1566c39d
NC
2924" -0[octal] specify record separator (\\0, if no argument)\n"
2925" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2926" -C[number/list] enables the listed Unicode features\n"
2927" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2928" -d[:debugger] run program under debugger\n"
2929" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2930" -e program one line of program (several -e's allowed, omit programfile)\n"
2931" -E program like -e, but enables all optional features\n"
2932" -f don't do $sitelib/sitecustomize.pl at startup\n"
2933" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2934" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2935" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2936" -l[octal] enable line ending processing, specifies line terminator\n"
2937" -[mM][-]module execute \"use/no module...\" before executing program\n"
2938" -n assume \"while (<>) { ... }\" loop around program\n"
2939" -p assume loop like -n but print line also, like sed\n"
2940" -s enable rudimentary parsing for switches after programfile\n"
2941" -S look for programfile using PATH environment variable\n",
2942" -t enable tainting warnings\n"
2943" -T enable tainting checks\n"
2944" -u dump core after parsing program\n"
2945" -U allow unsafe operations\n"
2946" -v print version, patchlevel and license\n"
2947" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2948" -w enable many useful warnings\n"
1566c39d
NC
2949" -W enable all warnings\n"
2950" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2951" -X disable all warnings\n"
2952" \n"
2953"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2954NULL
2955};
27da23d5 2956 const char * const *p = usage_msg;
1566c39d 2957 PerlIO *out = PerlIO_stdout();
fb73857a 2958
1566c39d
NC
2959 PerlIO_printf(out,
2960 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2961 PL_origargv[0]);
fb73857a 2962 while (*p)
1566c39d 2963 PerlIO_puts(out, *p++);
b6f82619 2964 my_exit(0);
4633a7c4
LW
2965}
2966
b4ab917c
DM
2967/* convert a string of -D options (or digits) into an int.
2968 * sets *s to point to the char after the options */
2969
2970#ifdef DEBUGGING
2971int
e1ec3a88 2972Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2973{
27da23d5 2974 static const char * const usage_msgd[] = {
651b8f1a
NC
2975 " Debugging flag values: (see also -d)\n"
2976 " p Tokenizing and parsing (with v, displays parse stack)\n"
2977 " s Stack snapshots (with v, displays all stacks)\n"
2978 " l Context (loop) stack processing\n"
2979 " t Trace execution\n"
2980 " o Method and overloading resolution\n",
2981 " c String/numeric conversions\n"
2982 " P Print profiling info, source file input state\n"
2983 " m Memory and SV allocation\n"
2984 " f Format processing\n"
2985 " r Regular expression parsing and execution\n"
2986 " x Syntax tree dump\n",
2987 " u Tainting checks\n"
2988 " H Hash dump -- usurps values()\n"
2989 " X Scratchpad allocation\n"
2990 " D Cleaning up\n"
2991 " T Tokenising\n"
2992 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2993 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2994 " v Verbose: use in conjunction with other flags\n"
2995 " C Copy On Write\n"
2996 " A Consistency checks on internal structures\n"
2997 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2998 " M trace smart match resolution\n"
2999 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3000 NULL
3001 };
b4ab917c 3002 int i = 0;
7918f24d
NC
3003
3004 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3005
b4ab917c
DM
3006 if (isALPHA(**s)) {
3007 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3008 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
3009
3010 for (; isALNUM(**s); (*s)++) {
c4420975 3011 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3012 if (d)
3013 i |= 1 << (d - debopts);
3014 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3015 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3016 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3017 }
3018 }
e6e64d9b 3019 else if (isDIGIT(**s)) {
b4ab917c
DM
3020 i = atoi(*s);
3021 for (; isALNUM(**s); (*s)++) ;
3022 }
ddcf8bc1 3023 else if (givehelp) {
06e869a4 3024 const char *const *p = usage_msgd;
651b8f1a 3025 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3026 }
b4ab917c
DM
3027# ifdef EBCDIC
3028 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3029 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3030 "-Dp not implemented on this platform\n");
3031# endif
3032 return i;
3033}
3034#endif
3035
79072805
LW
3036/* This routine handles any switches that can be given during run */
3037
c7030b81
NC
3038const char *
3039Perl_moreswitches(pTHX_ const char *s)
79072805 3040{
27da23d5 3041 dVAR;
84c133a0 3042 UV rschar;
0544e6df 3043 const char option = *s; /* used to remember option in -m/-M code */
79072805 3044
7918f24d
NC
3045 PERL_ARGS_ASSERT_MORESWITCHES;
3046
79072805
LW
3047 switch (*s) {
3048 case '0':
a863c7d1 3049 {
f2095865 3050 I32 flags = 0;
a3b680e6 3051 STRLEN numlen;
f2095865
JH
3052
3053 SvREFCNT_dec(PL_rs);
3054 if (s[1] == 'x' && s[2]) {
a3b680e6 3055 const char *e = s+=2;
f2095865
JH
3056 U8 *tmps;
3057
a3b680e6
AL
3058 while (*e)
3059 e++;
f2095865
JH
3060 numlen = e - s;
3061 flags = PERL_SCAN_SILENT_ILLDIGIT;
3062 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3063 if (s + numlen < e) {
3064 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3065 numlen = 0;
3066 s--;
3067 }
396482e1 3068 PL_rs = newSVpvs("");
c5661c80 3069 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3070 tmps = (U8*)SvPVX(PL_rs);
3071 uvchr_to_utf8(tmps, rschar);
3072 SvCUR_set(PL_rs, UNISKIP(rschar));
3073 SvUTF8_on(PL_rs);
3074 }
3075 else {
3076 numlen = 4;
3077 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3078 if (rschar & ~((U8)~0))
3079 PL_rs = &PL_sv_undef;
3080 else if (!rschar && numlen >= 2)
396482e1 3081 PL_rs = newSVpvs("");
f2095865
JH
3082 else {
3083 char ch = (char)rschar;
3084 PL_rs = newSVpvn(&ch, 1);
3085 }
3086 }
64ace3f8 3087 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3088 return s + numlen;
a863c7d1 3089 }
46487f74 3090 case 'C':
a05d7ebb 3091 s++;
dd374669 3092 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3093 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3094 PL_utf8cache = -1;
46487f74 3095 return s;
2304df62 3096 case 'F':
3280af22 3097 PL_minus_F = TRUE;
ebce5377
RGS
3098 PL_splitstr = ++s;
3099 while (*s && !isSPACE(*s)) ++s;
e49e380e 3100 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3101 return s;
79072805 3102 case 'a':
3280af22 3103 PL_minus_a = TRUE;
79072805
LW
3104 s++;
3105 return s;
3106 case 'c':
3280af22 3107 PL_minus_c = TRUE;
79072805
LW
3108 s++;
3109 return s;
3110 case 'd':
f20b2998 3111 forbid_setid('d', FALSE);
4633a7c4 3112 s++;
2cbb2ee1
RGS
3113
3114 /* -dt indicates to the debugger that threads will be used */
3115 if (*s == 't' && !isALNUM(s[1])) {
3116 ++s;
3117 my_setenv("PERL5DB_THREADED", "1");
3118 }
3119
70c94a19
RR
3120 /* The following permits -d:Mod to accepts arguments following an =
3121 in the fashion that -MSome::Mod does. */
3122 if (*s == ':' || *s == '=') {
b19934fb
NC
3123 const char *start;
3124 const char *end;
3125 SV *sv;
3126
3127 if (*++s == '-') {
3128 ++s;
3129 sv = newSVpvs("no Devel::");
3130 } else {
3131 sv = newSVpvs("use Devel::");
3132 }
3133
3134 start = s;
3135 end = s + strlen(s);
f85893a1 3136
b19934fb 3137 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3138 while(isALNUM(*s) || *s==':') ++s;
3139 if (*s != '=')
f85893a1 3140 sv_catpvn(sv, start, end - start);
70c94a19
RR
3141 else {
3142 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3143 /* Don't use NUL as q// delimiter here, this string goes in the
3144 * environment. */
3145 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3146 }
f85893a1 3147 s = end;
184f32ec 3148 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3149 SvREFCNT_dec(sv);
4633a7c4 3150 }
ed094faf 3151 if (!PL_perldb) {
3280af22 3152 PL_perldb = PERLDB_ALL;
a0d0e21e 3153 init_debugger();
ed094faf 3154 }
79072805
LW
3155 return s;
3156 case 'D':
0453d815 3157 {
79072805 3158#ifdef DEBUGGING
f20b2998 3159 forbid_setid('D', FALSE);
b4ab917c 3160 s++;
dd374669 3161 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3162#else /* !DEBUGGING */
0453d815 3163 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3164 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3165 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3166 for (s++; isALNUM(*s); s++) ;
79072805 3167#endif
79072805 3168 return s;
0453d815 3169 }
4633a7c4 3170 case 'h':
b6f82619 3171 usage();
79072805 3172 case 'i':
43c5f42d 3173 Safefree(PL_inplace);
c030f24b
GH
3174#if defined(__CYGWIN__) /* do backup extension automagically */
3175 if (*(s+1) == '\0') {
c86a4f2e 3176 PL_inplace = savepvs(".bak");
c030f24b
GH
3177 return s+1;
3178 }
3179#endif /* __CYGWIN__ */
5ef5d758 3180 {
d4c19fe8 3181 const char * const start = ++s;
5ef5d758
NC
3182 while (*s && !isSPACE(*s))
3183 ++s;
3184
3185 PL_inplace = savepvn(start, s - start);
3186 }
7b8d334a 3187 if (*s) {
5ef5d758 3188 ++s;
7b8d334a 3189 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3190 s++;
7b8d334a 3191 }
fb73857a 3192 return s;
4e49a025 3193 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3194 forbid_setid('I', FALSE);
fb73857a
PP
3195 ++s;
3196 while (*s && isSPACE(*s))
3197 ++s;
3198 if (*s) {
c7030b81 3199 const char *e, *p;
0df16ed7
GS
3200 p = s;
3201 /* ignore trailing spaces (possibly followed by other switches) */
3202 do {
3203 for (e = p; *e && !isSPACE(*e); e++) ;
3204 p = e;
3205 while (isSPACE(*p))
3206 p++;
3207 } while (*p && *p != '-');
55b4bc1c 3208 incpush(s, e-s,
e28f3139 3209 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3210 s = p;
3211 if (*s == '-')
3212 s++;
79072805
LW
3213 }
3214 else
a67e862a 3215 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3216 return s;
79072805 3217 case 'l':
3280af22 3218 PL_minus_l = TRUE;
79072805 3219 s++;
7889fe52
NIS
3220 if (PL_ors_sv) {
3221 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3222 PL_ors_sv = NULL;
7889fe52 3223 }
79072805 3224 if (isDIGIT(*s)) {
53305cf1 3225 I32 flags = 0;
a3b680e6 3226 STRLEN numlen;
396482e1 3227 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3228 numlen = 3 + (*s == '0');
3229 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3230 s += numlen;
3231 }
3232 else {
8bfdd7d9 3233 if (RsPARA(PL_rs)) {
396482e1 3234 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3235 }
3236 else {
8bfdd7d9 3237 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3238 }
79072805
LW
3239 }
3240 return s;
1a30305b 3241 case 'M':
f20b2998 3242 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3243 /* FALL THROUGH */
3244 case 'm':
f20b2998 3245 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3246 if (*++s) {
c7030b81 3247 const char *start;
b64cb68c 3248 const char *end;
11343788 3249 SV *sv;
e1ec3a88 3250 const char *use = "use ";
0544e6df 3251 bool colon = FALSE;
a5f75d66 3252 /* -M-foo == 'no foo' */
d0043bd1
NC
3253 /* Leading space on " no " is deliberate, to make both
3254 possibilities the same length. */
3255 if (*s == '-') { use = " no "; ++s; }
3256 sv = newSVpvn(use,4);
a5f75d66 3257 start = s;
1a30305b 3258 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3259 while(isALNUM(*s) || *s==':') {
3260 if( *s++ == ':' ) {
3261 if( *s == ':' )
3262 s++;
3263 else
3264 colon = TRUE;
3265 }
3266 }
3267 if (s == start)
3268 Perl_croak(aTHX_ "Module name required with -%c option",
3269 option);
3270 if (colon)
3271 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3272 "contains single ':'",
63da6837 3273 (int)(s - start), start, option);
b64cb68c 3274 end = s + strlen(s);
c07a80fd 3275 if (*s != '=') {
b64cb68c 3276 sv_catpvn(sv, start, end - start);
0544e6df 3277 if (option == 'm') {
c07a80fd 3278 if (*s != '\0')
cea2e8a9 3279 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3280 sv_catpvs( sv, " ()");
c07a80fd
PP
3281 }
3282 } else {
11343788 3283 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3284 /* Use NUL as q''-delimiter. */
3285 sv_catpvs(sv, " split(/,/,q\0");
3286 ++s;
3287 sv_catpvn(sv, s, end - s);
396482e1 3288 sv_catpvs(sv, "\0)");
c07a80fd 3289 }
b64cb68c 3290 s = end;
29a861e7 3291 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3292 }
3293 else
0544e6df 3294 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3295 return s;
79072805 3296 case 'n':
3280af22 3297 PL_minus_n = TRUE;
79072805
LW
3298 s++;
3299 return s;
3300 case 'p':
3280af22 3301 PL_minus_p = TRUE;
79072805
LW
3302 s++;
3303 return s;
3304 case 's':
f20b2998 3305 forbid_setid('s', FALSE);
3280af22 3306 PL_doswitches = TRUE;
79072805
LW
3307 s++;
3308 return s;
6537fe72 3309 case 't':
27a6968b 3310 case 'T':
6537fe72 3311 if (!PL_tainting)
27a6968b 3312 TOO_LATE_FOR(*s);
6537fe72 3313 s++;
463ee0b2 3314 return s;
79072805 3315 case 'u':
3280af22 3316 PL_do_undump = TRUE;
79072805
LW
3317 s++;
3318 return s;
3319 case 'U':
3280af22 3320 PL_unsafe = TRUE;
79072805
LW
3321 s++;
3322 return s;
3323 case 'v':
c4bc78d9
NC
3324 minus_v();
3325 case 'w':
3326 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3327 PL_dowarn |= G_WARN_ON;
3328 }
3329 s++;
3330 return s;
3331 case 'W':
3332 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3333 if (!specialWARN(PL_compiling.cop_warnings))
3334 PerlMemShared_free(PL_compiling.cop_warnings);
3335 PL_compiling.cop_warnings = pWARN_ALL ;
3336 s++;
3337 return s;
3338 case 'X':
3339 PL_dowarn = G_WARN_ALL_OFF;
3340 if (!specialWARN(PL_compiling.cop_warnings))
3341 PerlMemShared_free(PL_compiling.cop_warnings);
3342 PL_compiling.cop_warnings = pWARN_NONE ;
3343 s++;
3344 return s;
3345 case '*':
3346 case ' ':
3347 while( *s == ' ' )
3348 ++s;
3349 if (s[0] == '-') /* Additional switches on #! line. */
3350 return s+1;
3351 break;
3352 case '-':
3353 case 0:
3354#if defined(WIN32) || !defined(PERL_STRICT_CR)
3355 case '\r':
3356#endif
3357 case '\n':
3358 case '\t':
3359 break;
3360#ifdef ALTERNATE_SHEBANG
3361 case 'S': /* OS/2 needs -S on "extproc" line. */
3362 break;
3363#endif
4bb78d63
CB
3364 case 'e': case 'f': case 'x': case 'E':
3365#ifndef ALTERNATE_SHEBANG
3366 case 'S':
3367#endif
3368 case 'V':
c4bc78d9 3369 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3370 default:
3371 Perl_croak(aTHX_
3372 "Unrecognized switch: -%.1s (-h will show valid options)",s
3373 );
c4bc78d9
NC
3374 }
3375 return NULL;
3376}
3377
3378
3379STATIC void
3380S_minus_v(pTHX)
3381{
d7aa5382 3382 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3383 upg_version(PL_patchlevel, TRUE);
8e9464f1 3384#if !defined(DGUX)
46807d8e
YO
3385 {
3386 SV* level= vstringify(PL_patchlevel);
3387#ifdef PERL_PATCHNUM
23d483e2
NC
3388# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3389 SV *num = newSVpvs(PERL_PATCHNUM "*");
3390# else
3391 SV *num = newSVpvs(PERL_PATCHNUM);
3392# endif
46807d8e
YO
3393
3394 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3395 SvREFCNT_dec(level);
3396 level= num;
3397 } else {
d0a9311f 3398 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3399 SvREFCNT_dec(num);
3400 }
3401 #endif
3402 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3403 "\nThis is perl " STRINGIFY(PERL_REVISION)
3404 ", version " STRINGIFY(PERL_VERSION)
3405 ", subversion " STRINGIFY(PERL_SUBVERSION)
3406 " (%"SVf") built for " ARCHNAME, level
3407 );
46807d8e
YO
3408 SvREFCNT_dec(level);
3409 }
8e9464f1
JH
3410#else /* DGUX */
3411/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3412 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3413 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3414 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3415 PerlIO_printf(PerlIO_stdout(),
3416 Perl_form(aTHX_ " built under %s at %s %s\n",
3417 OSNAME, __DATE__, __TIME__));
3418 PerlIO_printf(PerlIO_stdout(),
3419 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3420 OSVERS));
8e9464f1 3421#endif /* !DGUX */
fb73857a
PP
3422#if defined(LOCAL_PATCH_COUNT)
3423 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3424 PerlIO_printf(PerlIO_stdout(),
3425 "\n(with %d registered patch%s, "
3426 "see perl -V for more detail)",
bb7a0f54 3427 LOCAL_PATCH_COUNT,
b0e47665 3428 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3429#endif
1a30305b 3430
b0e47665 3431 PerlIO_printf(PerlIO_stdout(),
fdfb76e4 3432 "\n\nCopyright 1987-2012, Larry Wall\n");
79072805 3433#ifdef MSDOS
b0e47665
GS
3434 PerlIO_printf(PerlIO_stdout(),
3435 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3436#endif
3437#ifdef DJGPP
b0e47665
GS
3438 PerlIO_printf(PerlIO_stdout(),
3439 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3440 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3441#endif
79072805 3442#ifdef OS2
b0e47665
GS
3443 PerlIO_printf(PerlIO_stdout(),
3444 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3445 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3446#endif
79072805 3447#ifdef atarist
b0e47665
GS
3448 PerlIO_printf(PerlIO_stdout(),
3449 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3450#endif
a3f9223b 3451#ifdef __BEOS__
b0e47665
GS
3452 PerlIO_printf(PerlIO_stdout(),
3453 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3454#endif
1d84e8df 3455#ifdef MPE
b0e47665 3456 PerlIO_printf(PerlIO_stdout(),
e583a879 3457 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3458#endif
9d116dd7 3459#ifdef OEMVS
b0e47665
GS
3460 PerlIO_printf(PerlIO_stdout(),
3461 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3462#endif
495c5fdc 3463#ifdef __VOS__
b0e47665 3464 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3465 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3466#endif
092bebab 3467#ifdef __OPEN_VM
b0e47665
GS
3468 PerlIO_printf(PerlIO_stdout(),
3469 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3470#endif
a1a0e61e 3471#ifdef POSIX_BC
b0e47665
GS
3472 PerlIO_printf(PerlIO_stdout(),
3473 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3474#endif
f83d2536 3475#ifdef EPOC
b0e47665 3476 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3477 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3478#endif
e1caacb4 3479#ifdef UNDER_CE
b475b3e6
JH
3480 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3481 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3482 wce_hitreturn();
3483#endif
a0fd4948 3484#ifdef __SYMBIAN32__
27da23d5
JH
3485 PerlIO_printf(PerlIO_stdout(),
3486 "Symbian port by Nokia, 2004-2005\n");
3487#endif
baed7233
DL
3488#ifdef BINARY_BUILD_NOTICE
3489 BINARY_BUILD_NOTICE;
3490#endif
b0e47665
GS
3491 PerlIO_printf(PerlIO_stdout(),
3492 "\n\
79072805 3493Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3494GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3495Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3496this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3497Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3498 my_exit(0);
79072805
LW
3499}
3500
3501/* compliments of Tom Christiansen */
3502
3503/* unexec() can be found in the Gnu emacs distribution */
ee580363 3504/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3505
3506void
864dbfa3 3507Perl_my_unexec(pTHX)
79072805 3508{
b37c2d43 3509 PERL_UNUSED_CONTEXT;
79072805 3510#ifdef UNEXEC
b37c2d43
AL
3511 SV * prog = newSVpv(BIN_EXP, 0);
3512 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3513 int status = 1;
79072805
LW
3514 extern int etext;
3515
396482e1 3516 sv_catpvs(prog, "/perl");
396482e1 3517 sv_catpvs(file, ".perldump");
79072805 3518
ee580363
GS
3519