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regcomp.c: Use table look-up instead of individual strings.
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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
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
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#ifndef HZ
62# ifdef CLK_TCK
63# define HZ CLK_TCK
64# else
65# define HZ 60
66# endif
67#endif
68
7114a2d2 69#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 70char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
71#endif
72
acfe0abc 73static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 74
cc69b689 75#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 76# define validate_suid(rsfp) NOOP
cc69b689 77#else
b24bc095 78# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 79#endif
8d063cd8 80
d6f07c05
AL
81#define CALL_BODY_SUB(myop) \
82 if (PL_op == (myop)) \
139d0ce6 83 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
84 if (PL_op) \
85 CALLRUNOPS(aTHX);
86
87#define CALL_LIST_BODY(cv) \
88 PUSHMARK(PL_stack_sp); \
9a8aa25b 89 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 90
e6827a76 91static void
daa7d858 92S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 93{
27da23d5 94 dVAR;
e6827a76
NC
95 if (!PL_curinterp) {
96 PERL_SET_INTERP(my_perl);
3db8f154 97#if defined(USE_ITHREADS)
e6827a76
NC
98 INIT_THREADS;
99 ALLOC_THREAD_KEY;
100 PERL_SET_THX(my_perl);
101 OP_REFCNT_INIT;
e8570548 102 OP_CHECK_MUTEX_INIT;
71ad1b0c 103 HINTS_REFCNT_INIT;
e6827a76 104 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
105 MUTEX_INIT(&PL_my_ctx_mutex);
106# endif
e6827a76 107 }
c0bce9aa
NC
108#if defined(USE_ITHREADS)
109 else
110#else
111 /* This always happens for non-ithreads */
112#endif
113 {
e6827a76
NC
114 PERL_SET_THX(my_perl);
115 }
116}
06d86050 117
cbec8ebe
DM
118
119/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
120
121void
122Perl_sys_init(int* argc, char*** argv)
123{
4fc0badb 124 dVAR;
7918f24d
NC
125
126 PERL_ARGS_ASSERT_SYS_INIT;
127
cbec8ebe
DM
128 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
129 PERL_UNUSED_ARG(argv);
130 PERL_SYS_INIT_BODY(argc, argv);
131}
132
133void
134Perl_sys_init3(int* argc, char*** argv, char*** env)
135{
4fc0badb 136 dVAR;
7918f24d
NC
137
138 PERL_ARGS_ASSERT_SYS_INIT3;
139
cbec8ebe
DM
140 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
141 PERL_UNUSED_ARG(argv);
142 PERL_UNUSED_ARG(env);
143 PERL_SYS_INIT3_BODY(argc, argv, env);
144}
145
146void
d0820ef1 147Perl_sys_term()
cbec8ebe 148{
4fc0badb 149 dVAR;
bf81751b
DM
150 if (!PL_veto_cleanup) {
151 PERL_SYS_TERM_BODY();
152 }
cbec8ebe
DM
153}
154
155
32e30700
GS
156#ifdef PERL_IMPLICIT_SYS
157PerlInterpreter *
7766f137
GS
158perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
159 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
160 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
161 struct IPerlDir* ipD, struct IPerlSock* ipS,
162 struct IPerlProc* ipP)
163{
164 PerlInterpreter *my_perl;
7918f24d
NC
165
166 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
167
9f653bb5 168 /* Newx() needs interpreter, so call malloc() instead */
32e30700 169 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 170 S_init_tls_and_interp(my_perl);
32e30700
GS
171 Zero(my_perl, 1, PerlInterpreter);
172 PL_Mem = ipM;
7766f137
GS
173 PL_MemShared = ipMS;
174 PL_MemParse = ipMP;
32e30700
GS
175 PL_Env = ipE;
176 PL_StdIO = ipStd;
177 PL_LIO = ipLIO;
178 PL_Dir = ipD;
179 PL_Sock = ipS;
180 PL_Proc = ipP;
7cb608b5 181 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 182
32e30700
GS
183 return my_perl;
184}
185#else
954c1994
GS
186
187/*
ccfc67b7
JH
188=head1 Embedding Functions
189
954c1994
GS
190=for apidoc perl_alloc
191
192Allocates a new Perl interpreter. See L<perlembed>.
193
194=cut
195*/
196
93a17b20 197PerlInterpreter *
cea2e8a9 198perl_alloc(void)
79072805 199{
cea2e8a9 200 PerlInterpreter *my_perl;
79072805 201
9f653bb5 202 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 203 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 204
e6827a76 205 S_init_tls_and_interp(my_perl);
7cb608b5 206#ifndef PERL_TRACK_MEMPOOL
07409e01 207 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
208#else
209 Zero(my_perl, 1, PerlInterpreter);
210 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
211 return my_perl;
212#endif
79072805 213}
32e30700 214#endif /* PERL_IMPLICIT_SYS */
79072805 215
954c1994
GS
216/*
217=for apidoc perl_construct
218
219Initializes a new Perl interpreter. See L<perlembed>.
220
221=cut
222*/
223
79072805 224void
0cb96387 225perl_construct(pTHXx)
79072805 226{
27da23d5 227 dVAR;
7918f24d
NC
228
229 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
230
8990e307 231#ifdef MULTIPLICITY
54aff467 232 init_interp();
ac27b0f5 233 PL_perl_destruct_level = 1;
54aff467 234#else
7918f24d 235 PERL_UNUSED_ARG(my_perl);
54aff467
GS
236 if (PL_perl_destruct_level > 0)
237 init_interp();
238#endif
34caed6d
DM
239 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
240
0d96b528 241 init_constants();
34caed6d
DM
242
243 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 244 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
245
246 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 247#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 248 PL_pidstatus = newHV();
ca0c25f6 249#endif
79072805 250
396482e1 251 PL_rs = newSVpvs("\n");
dc92893f 252
cea2e8a9 253 init_stacks();
79072805 254
748a9306 255 init_ids();
a5f75d66 256
312caa8e 257 JMPENV_BOOTSTRAP;
f86702cc
PP
258 STATUS_ALL_SUCCESS;
259
0672f40e 260 init_i18nl10n(1);
36477c24 261 SET_NUMERIC_STANDARD();
0b5b802d 262
ab821d7f 263#if defined(LOCAL_PATCH_COUNT)
3280af22 264 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
265#endif
266
52853b95
GS
267#ifdef HAVE_INTERP_INTERN
268 sys_intern_init();
269#endif
270
3a1ee7e8 271 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 272
3280af22
NIS
273 PL_fdpid = newAV(); /* for remembering popen pids by fd */
274 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 275 PL_errors = newSVpvs("");
76f68e9b
MHM
276 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
277 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
278 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 279#ifdef USE_ITHREADS
402d2eb1
NC
280 /* First entry is a list of empty elements. It needs to be initialised
281 else all hell breaks loose in S_find_uninit_var(). */
282 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 283 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 284 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 285#endif
e5dd39fc 286#ifdef USE_REENTRANT_API
59bd0823 287 Perl_reentrant_init(aTHX);
e5dd39fc 288#endif
7dc86639
YO
289#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
290 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
291 * This MUST be done before any hash stores or fetches take place.
292 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
293 * yourself, it is your responsibility to provide a good random seed!
294 * You can also define PERL_HASH_SEED in compile time, see hv.h.
295 *
296 * XXX: fix this comment */
297 if (PL_hash_seed_set == FALSE) {
298 Perl_get_hash_seed(aTHX_ PL_hash_seed);
299 PL_hash_seed_set= TRUE;
300 }
301#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
302
303 /* Note that strtab is a rather special HV. Assumptions are made
304 about not iterating on it, and not adding tie magic to it.
305 It is properly deallocated in perl_destruct() */
306 PL_strtab = newHV();
307
3d47000e
AB
308 HvSHAREKEYS_off(PL_strtab); /* mandatory */
309 hv_ksplit(PL_strtab, 512);
310
0631ea03
AB
311#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
312 _dyld_lookup_and_bind
313 ("__environ", (unsigned long *) &environ_pointer, NULL);
314#endif /* environ */
315
2f42fcb0
JH
316#ifndef PERL_MICRO
317# ifdef USE_ENVIRON_ARRAY
0631ea03 318 PL_origenviron = environ;
2f42fcb0 319# endif
0631ea03
AB
320#endif
321
5311654c 322 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 323 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
324 * The HZ if not originally defined has been by now
325 * been defined as CLK_TCK, if available. */
b6c36746 326#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
327 PL_clocktick = sysconf(_SC_CLK_TCK);
328 if (PL_clocktick <= 0)
329#endif
330 PL_clocktick = HZ;
331
081fc587
AB
332 PL_stashcache = newHV();
333
e8e3635e 334 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 335 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 336
27da23d5
JH
337#ifdef HAS_MMAP
338 if (!PL_mmap_page_size) {
339#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
340 {
341 SETERRNO(0, SS_NORMAL);
342# ifdef _SC_PAGESIZE
343 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
344# else
345 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
346# endif
347 if ((long) PL_mmap_page_size < 0) {
348 if (errno) {
44f8325f 349 SV * const error = ERRSV;
d4c19fe8 350 SvUPGRADE(error, SVt_PV);
0510663f 351 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
352 }
353 else
354 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
355 }
356 }
357#else
358# ifdef HAS_GETPAGESIZE
359 PL_mmap_page_size = getpagesize();
360# else
361# if defined(I_SYS_PARAM) && defined(PAGESIZE)
362 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
363# endif
364# endif
365#endif
366 if (PL_mmap_page_size <= 0)
367 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
368 (IV) PL_mmap_page_size);
369 }
370#endif /* HAS_MMAP */
371
372#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
373 PL_timesbase.tms_utime = 0;
374 PL_timesbase.tms_stime = 0;
375 PL_timesbase.tms_cutime = 0;
376 PL_timesbase.tms_cstime = 0;
377#endif
378
7d113631
NC
379 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
380
a3e6e81e 381 PL_registered_mros = newHV();
9e169432
NC
382 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
383 HvMAX(PL_registered_mros) = 0;
a3e6e81e 384
8990e307 385 ENTER;
79072805
LW
386}
387
954c1994 388/*
62375a60
NIS
389=for apidoc nothreadhook
390
391Stub that provides thread hook for perl_destruct when there are
392no threads.
393
394=cut
395*/
396
397int
4e9e3734 398Perl_nothreadhook(pTHX)
62375a60 399{
96a5add6 400 PERL_UNUSED_CONTEXT;
62375a60
NIS
401 return 0;
402}
403
41e4abd8
NC
404#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
405void
406Perl_dump_sv_child(pTHX_ SV *sv)
407{
408 ssize_t got;
bf357333
NC
409 const int sock = PL_dumper_fd;
410 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
411 union control_un control;
412 struct msghdr msg;
808ad2d0 413 struct iovec vec[2];
bf357333 414 struct cmsghdr *cmptr;
808ad2d0
NC
415 int returned_errno;
416 unsigned char buffer[256];
41e4abd8 417
7918f24d
NC
418 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
419
bf357333 420 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
421 return;
422
423 PerlIO_flush(Perl_debug_log);
424
bf357333
NC
425 /* All these shenanigans are to pass a file descriptor over to our child for
426 it to dump out to. We can't let it hold open the file descriptor when it
427 forks, as the file descriptor it will dump to can turn out to be one end
428 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 429 be open, the wait would be forever.) */
bf357333
NC
430
431 msg.msg_control = control.control;
432 msg.msg_controllen = sizeof(control.control);
433 /* We're a connected socket so we don't need a destination */
434 msg.msg_name = NULL;
435 msg.msg_namelen = 0;
436 msg.msg_iov = vec;
808ad2d0 437 msg.msg_iovlen = 1;
bf357333
NC
438
439 cmptr = CMSG_FIRSTHDR(&msg);
440 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
441 cmptr->cmsg_level = SOL_SOCKET;
442 cmptr->cmsg_type = SCM_RIGHTS;
443 *((int *)CMSG_DATA(cmptr)) = 1;
444
445 vec[0].iov_base = (void*)&sv;
446 vec[0].iov_len = sizeof(sv);
447 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
448
449 if(got < 0) {
bf357333 450 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
451 abort();
452 }
bf357333
NC
453 if(got < sizeof(sv)) {
454 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
455 abort();
456 }
457
808ad2d0
NC
458 /* Return protocol is
459 int: errno value
460 unsigned char: length of location string (0 for empty)
461 unsigned char*: string (not terminated)
462 */
463 vec[0].iov_base = (void*)&returned_errno;
464 vec[0].iov_len = sizeof(returned_errno);
465 vec[1].iov_base = buffer;
466 vec[1].iov_len = 1;
467
468 got = readv(sock, vec, 2);
41e4abd8
NC
469
470 if(got < 0) {
471 perror("Debug leaking scalars parent read failed");
808ad2d0 472 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
473 abort();
474 }
808ad2d0 475 if(got < sizeof(returned_errno) + 1) {
41e4abd8 476 perror("Debug leaking scalars parent short read");
808ad2d0 477 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
478 abort();
479 }
480
808ad2d0
NC
481 if (*buffer) {
482 got = read(sock, buffer + 1, *buffer);
483 if(got < 0) {
484 perror("Debug leaking scalars parent read 2 failed");
485 PerlIO_flush(PerlIO_stderr());
486 abort();
487 }
488
489 if(got < *buffer) {
490 perror("Debug leaking scalars parent short read 2");
491 PerlIO_flush(PerlIO_stderr());
492 abort();
493 }
494 }
495
496 if (returned_errno || *buffer) {
497 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
498 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
499 returned_errno, strerror(returned_errno));
41e4abd8
NC
500 }
501}
502#endif
503
62375a60 504/*
954c1994
GS
505=for apidoc perl_destruct
506
507Shuts down a Perl interpreter. See L<perlembed>.
508
509=cut
510*/
511
31d77e54 512int
0cb96387 513perl_destruct(pTHXx)
79072805 514{
27da23d5 515 dVAR;
be2ea8ed 516 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 517 HV *hv;
2aa47728 518#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
519 pid_t child;
520#endif
8990e307 521
7918f24d
NC
522 PERL_ARGS_ASSERT_PERL_DESTRUCT;
523#ifndef MULTIPLICITY
ed6c66dd 524 PERL_UNUSED_ARG(my_perl);
7918f24d 525#endif
9d4ba2ae 526
3d22c4f0
GG
527 assert(PL_scopestack_ix == 1);
528
7766f137
GS
529 /* wait for all pseudo-forked children to finish */
530 PERL_WAIT_FOR_CHILDREN;
531
3280af22 532 destruct_level = PL_perl_destruct_level;
36e77d41 533#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 534 {
9d4ba2ae
AL
535 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
536 if (s) {
36e77d41
DD
537 const int i = atoi(s);
538#ifdef DEBUGGING
539 if (destruct_level < i) destruct_level = i;
540#endif
541#ifdef PERL_TRACK_MEMPOOL
542 /* RT #114496, for perl_free */
543 PL_perl_destruct_level = i;
544#endif
5f05dabc 545 }
4633a7c4
LW
546 }
547#endif
548
27da23d5 549 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
550 dJMPENV;
551 int x = 0;
552
553 JMPENV_PUSH(x);
1b6737cc 554 PERL_UNUSED_VAR(x);
9ebf26ad 555 if (PL_endav && !PL_minus_c) {
ca7b837b 556 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 557 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 558 }
f3faeb53 559 JMPENV_POP;
26f423df 560 }
f3faeb53 561 LEAVE;
a0d0e21e 562 FREETMPS;
3d22c4f0 563 assert(PL_scopestack_ix == 0);
a0d0e21e 564
e00b64d4 565 /* Need to flush since END blocks can produce output */
f13a2bc0 566 my_fflush_all();
e00b64d4 567
16c91539 568 if (PL_threadhook(aTHX)) {
62375a60 569 /* Threads hook has vetoed further cleanup */
c301d606 570 PL_veto_cleanup = TRUE;
37038d91 571 return STATUS_EXIT;
62375a60
NIS
572 }
573
2aa47728
NC
574#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
575 if (destruct_level != 0) {
576 /* Fork here to create a child. Our child's job is to preserve the
577 state of scalars prior to destruction, so that we can instruct it
578 to dump any scalars that we later find have leaked.
579 There's no subtlety in this code - it assumes POSIX, and it doesn't
580 fail gracefully */
581 int fd[2];
582
583 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
584 perror("Debug leaking scalars socketpair failed");
585 abort();
586 }
587
588 child = fork();
589 if(child == -1) {
590 perror("Debug leaking scalars fork failed");
591 abort();
592 }
593 if (!child) {
594 /* We are the child */
3125a5a4
NC
595 const int sock = fd[1];
596 const int debug_fd = PerlIO_fileno(Perl_debug_log);
597 int f;
808ad2d0
NC
598 const char *where;
599 /* Our success message is an integer 0, and a char 0 */
b61433a9 600 static const char success[sizeof(int) + 1] = {0};
3125a5a4 601
2aa47728 602 close(fd[0]);
2aa47728 603
3125a5a4
NC
604 /* We need to close all other file descriptors otherwise we end up
605 with interesting hangs, where the parent closes its end of a
606 pipe, and sits waiting for (another) child to terminate. Only
607 that child never terminates, because it never gets EOF, because
bf357333
NC
608 we also have the far end of the pipe open. We even need to
609 close the debugging fd, because sometimes it happens to be one
610 end of a pipe, and a process is waiting on the other end for
611 EOF. Normally it would be closed at some point earlier in
612 destruction, but if we happen to cause the pipe to remain open,
613 EOF never occurs, and we get an infinite hang. Hence all the
614 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
615
616 f = sysconf(_SC_OPEN_MAX);
617 if(f < 0) {
808ad2d0
NC
618 where = "sysconf failed";
619 goto abort;
3125a5a4
NC
620 }
621 while (f--) {
622 if (f == sock)
623 continue;
3125a5a4
NC
624 close(f);
625 }
626
2aa47728
NC
627 while (1) {
628 SV *target;
bf357333
NC
629 union control_un control;
630 struct msghdr msg;
631 struct iovec vec[1];
632 struct cmsghdr *cmptr;
633 ssize_t got;
634 int got_fd;
635
636 msg.msg_control = control.control;
637 msg.msg_controllen = sizeof(control.control);
638 /* We're a connected socket so we don't need a source */
639 msg.msg_name = NULL;
640 msg.msg_namelen = 0;
641 msg.msg_iov = vec;
642 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
643
644 vec[0].iov_base = (void*)&target;
645 vec[0].iov_len = sizeof(target);
646
647 got = recvmsg(sock, &msg, 0);
2aa47728
NC
648
649 if(got == 0)
650 break;
651 if(got < 0) {
808ad2d0
NC
652 where = "recv failed";
653 goto abort;
2aa47728
NC
654 }
655 if(got < sizeof(target)) {
808ad2d0
NC
656 where = "short recv";
657 goto abort;
2aa47728 658 }
bf357333 659
808ad2d0
NC
660 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
661 where = "no cmsg";
662 goto abort;
663 }
664 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
665 where = "wrong cmsg_len";
666 goto abort;
667 }
668 if(cmptr->cmsg_level != SOL_SOCKET) {
669 where = "wrong cmsg_level";
670 goto abort;
671 }
672 if(cmptr->cmsg_type != SCM_RIGHTS) {
673 where = "wrong cmsg_type";
674 goto abort;
675 }
bf357333
NC
676
677 got_fd = *(int*)CMSG_DATA(cmptr);
678 /* For our last little bit of trickery, put the file descriptor
679 back into Perl_debug_log, as if we never actually closed it
680 */
808ad2d0
NC
681 if(got_fd != debug_fd) {
682 if (dup2(got_fd, debug_fd) == -1) {
683 where = "dup2";
684 goto abort;
685 }
686 }
2aa47728 687 sv_dump(target);
bf357333 688
2aa47728
NC
689 PerlIO_flush(Perl_debug_log);
690
808ad2d0 691 got = write(sock, &success, sizeof(success));
2aa47728
NC
692
693 if(got < 0) {
808ad2d0
NC
694 where = "write failed";
695 goto abort;
2aa47728 696 }
808ad2d0
NC
697 if(got < sizeof(success)) {
698 where = "short write";
699 goto abort;
2aa47728
NC
700 }
701 }
702 _exit(0);
808ad2d0
NC
703 abort:
704 {
705 int send_errno = errno;
706 unsigned char length = (unsigned char) strlen(where);
707 struct iovec failure[3] = {
708 {(void*)&send_errno, sizeof(send_errno)},
709 {&length, 1},
710 {(void*)where, length}
711 };
712 int got = writev(sock, failure, 3);
713 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
714 in the parent if we try to read from the socketpair after the
715 child has exited, even if there was data to read.
716 So sleep a bit to give the parent a fighting chance of
717 reading the data. */
718 sleep(2);
719 _exit((got == -1) ? errno : 0);
720 }
bf357333 721 /* End of child. */
2aa47728 722 }
41e4abd8 723 PL_dumper_fd = fd[0];
2aa47728
NC
724 close(fd[1]);
725 }
726#endif
727
ff0cee69
PP
728 /* We must account for everything. */
729
730 /* Destroy the main CV and syntax tree */
37e77c23
FC
731 /* Set PL_curcop now, because destroying ops can cause new SVs
732 to be generated in Perl_pad_swipe, and when running with
733 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
734 op from which the filename structure member is copied. */
17fbfdf6 735 PL_curcop = &PL_compiling;
3280af22 736 if (PL_main_root) {
4e380990
DM
737 /* ensure comppad/curpad to refer to main's pad */
738 if (CvPADLIST(PL_main_cv)) {
739 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
740 }
3280af22 741 op_free(PL_main_root);
5f66b61c 742 PL_main_root = NULL;
a0d0e21e 743 }
5f66b61c 744 PL_main_start = NULL;
aac9d523
DM
745 /* note that PL_main_cv isn't usually actually freed at this point,
746 * due to the CvOUTSIDE refs from subs compiled within it. It will
747 * get freed once all the subs are freed in sv_clean_all(), for
748 * destruct_level > 0 */
3280af22 749 SvREFCNT_dec(PL_main_cv);
601f1833 750 PL_main_cv = NULL;
ca7b837b 751 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 752
13621cfb
NIS
753 /* Tell PerlIO we are about to tear things apart in case
754 we have layers which are using resources that should
755 be cleaned up now.
756 */
757
758 PerlIO_destruct(aTHX);
759
3280af22 760 if (PL_sv_objcount) {
a0d0e21e
LW
761 /*
762 * Try to destruct global references. We do this first so that the
763 * destructors and destructees still exist. Some sv's might remain.
764 * Non-referenced objects are on their own.
765 */
a0d0e21e 766 sv_clean_objs();
bf9cdc68 767 PL_sv_objcount = 0;
8990e307
LW
768 }
769
5cd24f17 770 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 771 SvREFCNT_dec(PL_warnhook);
a0714e2c 772 PL_warnhook = NULL;
3280af22 773 SvREFCNT_dec(PL_diehook);
a0714e2c 774 PL_diehook = NULL;
5cd24f17 775
4b556e6c 776 /* call exit list functions */
3280af22 777 while (PL_exitlistlen-- > 0)
acfe0abc 778 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 779
3280af22 780 Safefree(PL_exitlist);
4b556e6c 781
1c4916e5
CB
782 PL_exitlist = NULL;
783 PL_exitlistlen = 0;
784
a3e6e81e
NC
785 SvREFCNT_dec(PL_registered_mros);
786
551a8b83 787 /* jettison our possibly duplicated environment */
4b647fb0
DM
788 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
789 * so we certainly shouldn't free it here
790 */
2f42fcb0 791#ifndef PERL_MICRO
4b647fb0 792#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 793 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
794#ifdef USE_ITHREADS
795 /* only main thread can free environ[0] contents */
796 && PL_curinterp == aTHX
797#endif
798 )
799 {
551a8b83
JH
800 I32 i;
801
802 for (i = 0; environ[i]; i++)
4b420006 803 safesysfree(environ[i]);
0631ea03 804
4b420006
JH
805 /* Must use safesysfree() when working with environ. */
806 safesysfree(environ);
551a8b83
JH
807
808 environ = PL_origenviron;
809 }
810#endif
2f42fcb0 811#endif /* !PERL_MICRO */
551a8b83 812
30985c42
JH
813 if (destruct_level == 0) {
814
815 DEBUG_P(debprofdump());
816
817#if defined(PERLIO_LAYERS)
818 /* No more IO - including error messages ! */
819 PerlIO_cleanup(aTHX);
820#endif
821
822 CopFILE_free(&PL_compiling);
30985c42
JH
823
824 /* The exit() function will do everything that needs doing. */
825 return STATUS_EXIT;
826 }
827
5f8cb046
DM
828#ifdef USE_ITHREADS
829 /* the syntax tree is shared between clones
830 * so op_free(PL_main_root) only ReREFCNT_dec's
831 * REGEXPs in the parent interpreter
832 * we need to manually ReREFCNT_dec for the clones
833 */
0547a729
DM
834 {
835 I32 i = AvFILLp(PL_regex_padav);
836 SV **ary = AvARRAY(PL_regex_padav);
837
838 for (; i; i--) {
839 SvREFCNT_dec(ary[i]);
840 ary[i] = &PL_sv_undef;
841 }
842 }
5f8cb046
DM
843#endif
844
0547a729 845
ad64d0ec 846 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
847 PL_stashcache = NULL;
848
5f05dabc
PP
849 /* loosen bonds of global variables */
850
2f9285f8
DM
851 /* XXX can PL_parser still be non-null here? */
852 if(PL_parser && PL_parser->rsfp) {
853 (void)PerlIO_close(PL_parser->rsfp);
854 PL_parser->rsfp = NULL;
8ebc5c01
PP
855 }
856
84386e14
RGS
857 if (PL_minus_F) {
858 Safefree(PL_splitstr);
859 PL_splitstr = NULL;
860 }
861
8ebc5c01 862 /* switches */
3280af22
NIS
863 PL_minus_n = FALSE;
864 PL_minus_p = FALSE;
865 PL_minus_l = FALSE;
866 PL_minus_a = FALSE;
867 PL_minus_F = FALSE;
868 PL_doswitches = FALSE;
599cee73 869 PL_dowarn = G_WARN_OFF;
1a904fc8 870#ifdef PERL_SAWAMPERSAND
d3b97530 871 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 872#endif
3280af22
NIS
873 PL_unsafe = FALSE;
874
875 Safefree(PL_inplace);
bd61b366 876 PL_inplace = NULL;
a7cb1f99 877 SvREFCNT_dec(PL_patchlevel);
1e8125c6 878 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
879
880 if (PL_e_script) {
881 SvREFCNT_dec(PL_e_script);
a0714e2c 882 PL_e_script = NULL;
8ebc5c01
PP
883 }
884
bf9cdc68
RG
885 PL_perldb = 0;
886
8ebc5c01
PP
887 /* magical thingies */
888
e23d9e2f
CS
889 SvREFCNT_dec(PL_ofsgv); /* *, */
890 PL_ofsgv = NULL;
5f05dabc 891
7889fe52 892 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 893 PL_ors_sv = NULL;
8ebc5c01 894
3280af22 895 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 896 PL_rs = NULL;
dc92893f 897
d33b2eba 898 Safefree(PL_osname); /* $^O */
bd61b366 899 PL_osname = NULL;
5f05dabc 900
3280af22 901 SvREFCNT_dec(PL_statname);
a0714e2c
SS
902 PL_statname = NULL;
903 PL_statgv = NULL;
5f05dabc 904
8ebc5c01
PP
905 /* defgv, aka *_ should be taken care of elsewhere */
906
7d5ea4e7
GS
907 /* float buffer */
908 Safefree(PL_efloatbuf);
bd61b366 909 PL_efloatbuf = NULL;
7d5ea4e7
GS
910 PL_efloatsize = 0;
911
8ebc5c01 912 /* startup and shutdown function lists */
3280af22 913 SvREFCNT_dec(PL_beginav);
5a837c8f 914 SvREFCNT_dec(PL_beginav_save);
3280af22 915 SvREFCNT_dec(PL_endav);
7d30b5c4 916 SvREFCNT_dec(PL_checkav);
ece599bd 917 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
918 SvREFCNT_dec(PL_unitcheckav);
919 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 920 SvREFCNT_dec(PL_initav);
7d49f689
NC
921 PL_beginav = NULL;
922 PL_beginav_save = NULL;
923 PL_endav = NULL;
924 PL_checkav = NULL;
925 PL_checkav_save = NULL;
3c10abe3
AG
926 PL_unitcheckav = NULL;
927 PL_unitcheckav_save = NULL;
7d49f689 928 PL_initav = NULL;
5618dfe8 929
8ebc5c01 930 /* shortcuts just get cleared */
a0714e2c
SS
931 PL_envgv = NULL;
932 PL_incgv = NULL;
933 PL_hintgv = NULL;
934 PL_errgv = NULL;
935 PL_argvgv = NULL;
936 PL_argvoutgv = NULL;
937 PL_stdingv = NULL;
938 PL_stderrgv = NULL;
939 PL_last_in_gv = NULL;
940 PL_replgv = NULL;
941 PL_DBgv = NULL;
942 PL_DBline = NULL;
943 PL_DBsub = NULL;
944 PL_DBsingle = NULL;
945 PL_DBtrace = NULL;
946 PL_DBsignal = NULL;
601f1833 947 PL_DBcv = NULL;
7d49f689 948 PL_dbargs = NULL;
5c284bb0 949 PL_debstash = NULL;
8ebc5c01 950
7a1c5554 951 SvREFCNT_dec(PL_argvout_stack);
7d49f689 952 PL_argvout_stack = NULL;
8ebc5c01 953
5c831c24 954 SvREFCNT_dec(PL_modglobal);
5c284bb0 955 PL_modglobal = NULL;
5c831c24 956 SvREFCNT_dec(PL_preambleav);
7d49f689 957 PL_preambleav = NULL;
5c831c24 958 SvREFCNT_dec(PL_subname);
a0714e2c 959 PL_subname = NULL;
ca0c25f6 960#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 961 SvREFCNT_dec(PL_pidstatus);
5c284bb0 962 PL_pidstatus = NULL;
ca0c25f6 963#endif
5c831c24 964 SvREFCNT_dec(PL_toptarget);
a0714e2c 965 PL_toptarget = NULL;
5c831c24 966 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
967 PL_bodytarget = NULL;
968 PL_formtarget = NULL;
5c831c24 969
d33b2eba 970 /* free locale stuff */
b9582b6a 971#ifdef USE_LOCALE_COLLATE
d33b2eba 972 Safefree(PL_collation_name);
bd61b366 973 PL_collation_name = NULL;
b9582b6a 974#endif
d33b2eba 975
b9582b6a 976#ifdef USE_LOCALE_NUMERIC
d33b2eba 977 Safefree(PL_numeric_name);
bd61b366 978 PL_numeric_name = NULL;
a453c169 979 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 980 PL_numeric_radix_sv = NULL;
b9582b6a 981#endif
d33b2eba 982
5c831c24
GS
983 /* clear utf8 character classes */
984 SvREFCNT_dec(PL_utf8_alnum);
5c831c24 985 SvREFCNT_dec(PL_utf8_alpha);
5c831c24
GS
986 SvREFCNT_dec(PL_utf8_graph);
987 SvREFCNT_dec(PL_utf8_digit);
988 SvREFCNT_dec(PL_utf8_upper);
989 SvREFCNT_dec(PL_utf8_lower);
990 SvREFCNT_dec(PL_utf8_print);
991 SvREFCNT_dec(PL_utf8_punct);
5c831c24
GS
992 SvREFCNT_dec(PL_utf8_mark);
993 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 994 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 995 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 996 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
997 SvREFCNT_dec(PL_utf8_idstart);
998 SvREFCNT_dec(PL_utf8_idcont);
2726813d 999 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 1000 PL_utf8_alnum = NULL;
a0714e2c 1001 PL_utf8_alpha = NULL;
a0714e2c
SS
1002 PL_utf8_graph = NULL;
1003 PL_utf8_digit = NULL;
1004 PL_utf8_upper = NULL;
1005 PL_utf8_lower = NULL;
1006 PL_utf8_print = NULL;
1007 PL_utf8_punct = NULL;
a0714e2c
SS
1008 PL_utf8_mark = NULL;
1009 PL_utf8_toupper = NULL;
1010 PL_utf8_totitle = NULL;
1011 PL_utf8_tolower = NULL;
1012 PL_utf8_tofold = NULL;
1013 PL_utf8_idstart = NULL;
1014 PL_utf8_idcont = NULL;
2726813d 1015 PL_utf8_foldclosures = NULL;
5c831c24 1016
971a9dd3 1017 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1018 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1019 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1020 cophh_free(CopHINTHASH_get(&PL_compiling));
1021 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1022 CopFILE_free(&PL_compiling);
5c831c24 1023
a0d0e21e 1024 /* Prepare to destruct main symbol table. */
5f05dabc 1025
3280af22 1026 hv = PL_defstash;
ca556bcd
DM
1027 /* break ref loop *:: <=> %:: */
1028 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1029 PL_defstash = 0;
a0d0e21e 1030 SvREFCNT_dec(hv);
5c831c24 1031 SvREFCNT_dec(PL_curstname);
a0714e2c 1032 PL_curstname = NULL;
a0d0e21e 1033
5a844595
GS
1034 /* clear queued errors */
1035 SvREFCNT_dec(PL_errors);
a0714e2c 1036 PL_errors = NULL;
5a844595 1037
dd69841b
BB
1038 SvREFCNT_dec(PL_isarev);
1039
a0d0e21e 1040 FREETMPS;
9b387841 1041 if (destruct_level >= 2) {
3280af22 1042 if (PL_scopestack_ix != 0)
9b387841
NC
1043 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1044 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1045 (long)PL_scopestack_ix);
3280af22 1046 if (PL_savestack_ix != 0)
9b387841
NC
1047 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1048 "Unbalanced saves: %ld more saves than restores\n",
1049 (long)PL_savestack_ix);
3280af22 1050 if (PL_tmps_floor != -1)
9b387841
NC
1051 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1052 (long)PL_tmps_floor + 1);
a0d0e21e 1053 if (cxstack_ix != -1)
9b387841
NC
1054 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1055 (long)cxstack_ix + 1);
a0d0e21e 1056 }
8990e307 1057
0547a729
DM
1058#ifdef USE_ITHREADS
1059 SvREFCNT_dec(PL_regex_padav);
1060 PL_regex_padav = NULL;
1061 PL_regex_pad = NULL;
1062#endif
1063
776df701 1064#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1065 /* the entries in this list are allocated via SV PVX's, so get freed
1066 * in sv_clean_all */
1067 Safefree(PL_my_cxt_list);
776df701 1068#endif
57bb2458 1069
8990e307 1070 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1071
1072 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1073 while (sv_clean_all() > 2)
5226ed68
JH
1074 ;
1075
23083432
FC
1076#ifdef USE_ITHREADS
1077 Safefree(PL_stashpad); /* must come after sv_clean_all */
1078#endif
1079
d4777f27
GS
1080 AvREAL_off(PL_fdpid); /* no surviving entries */
1081 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1082 PL_fdpid = NULL;
d33b2eba 1083
6c644e78
GS
1084#ifdef HAVE_INTERP_INTERN
1085 sys_intern_clear();
1086#endif
1087
6e72f9df
PP
1088 /* Destruct the global string table. */
1089 {
1090 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1091 * so that sv_free() won't fail on them.
80459961
NC
1092 * Now that the global string table is using a single hunk of memory
1093 * for both HE and HEK, we either need to explicitly unshare it the
1094 * correct way, or actually free things here.
6e72f9df 1095 */
80459961
NC
1096 I32 riter = 0;
1097 const I32 max = HvMAX(PL_strtab);
c4420975 1098 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1099 HE *hent = array[0];
1100
6e72f9df 1101 for (;;) {
0453d815 1102 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1103 HE * const next = HeNEXT(hent);
9014280d 1104 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1105 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1106 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1107 Safefree(hent);
1108 hent = next;
6e72f9df
PP
1109 }
1110 if (!hent) {
1111 if (++riter > max)
1112 break;
1113 hent = array[riter];
1114 }
1115 }
80459961
NC
1116
1117 Safefree(array);
1118 HvARRAY(PL_strtab) = 0;
1119 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1120 }
3280af22 1121 SvREFCNT_dec(PL_strtab);
6e72f9df 1122
e652bb2f 1123#ifdef USE_ITHREADS
c21d1a0f 1124 /* free the pointer tables used for cloning */
a0739874 1125 ptr_table_free(PL_ptr_table);
bf9cdc68 1126 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1127#endif
a0739874 1128
d33b2eba
GS
1129 /* free special SVs */
1130
1131 SvREFCNT(&PL_sv_yes) = 0;
1132 sv_clear(&PL_sv_yes);
1133 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1134 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1135
1136 SvREFCNT(&PL_sv_no) = 0;
1137 sv_clear(&PL_sv_no);
1138 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1139 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1140
9f375a43
DM
1141 {
1142 int i;
1143 for (i=0; i<=2; i++) {
1144 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1145 sv_clear(PERL_DEBUG_PAD(i));
1146 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1147 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1148 }
1149 }
1150
0453d815 1151 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1152 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1153
eba0f806
DM
1154#ifdef DEBUG_LEAKING_SCALARS
1155 if (PL_sv_count != 0) {
1156 SV* sva;
1157 SV* sv;
eb578fdb 1158 SV* svend;
eba0f806 1159
ad64d0ec 1160 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1161 svend = &sva[SvREFCNT(sva)];
1162 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1163 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1164 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1165 " flags=0x%"UVxf
fd0854ff 1166 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1167 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1168 "serial %"UVuf"\n",
574b8821
NC
1169 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1170 pTHX__VALUE,
fd0854ff
DM
1171 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1172 sv->sv_debug_line,
1173 sv->sv_debug_inpad ? "for" : "by",
1174 sv->sv_debug_optype ?
1175 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1176 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1177 sv->sv_debug_serial
fd0854ff 1178 );
2aa47728 1179#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1180 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1181#endif
eba0f806
DM
1182 }
1183 }
1184 }
1185 }
2aa47728
NC
1186#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1187 {
1188 int status;
1189 fd_set rset;
1190 /* Wait for up to 4 seconds for child to terminate.
1191 This seems to be the least effort way of timing out on reaping
1192 its exit status. */
1193 struct timeval waitfor = {4, 0};
41e4abd8 1194 int sock = PL_dumper_fd;
2aa47728
NC
1195
1196 shutdown(sock, 1);
1197 FD_ZERO(&rset);
1198 FD_SET(sock, &rset);
1199 select(sock + 1, &rset, NULL, NULL, &waitfor);
1200 waitpid(child, &status, WNOHANG);
1201 close(sock);
1202 }
1203#endif
eba0f806 1204#endif
77abb4c6
NC
1205#ifdef DEBUG_LEAKING_SCALARS_ABORT
1206 if (PL_sv_count)
1207 abort();
1208#endif
bf9cdc68 1209 PL_sv_count = 0;
eba0f806 1210
56a2bab7 1211#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1212 /* No more IO - including error messages ! */
1213 PerlIO_cleanup(aTHX);
1214#endif
1215
9f4bd222 1216 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1217 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1218 for no arg - and will try and SvREFCNT_dec it.
1219 */
1220 SvREFCNT(&PL_sv_undef) = 0;
1221 SvREADONLY_off(&PL_sv_undef);
1222
3280af22 1223 Safefree(PL_origfilename);
bd61b366 1224 PL_origfilename = NULL;
43c5f42d 1225 Safefree(PL_reg_curpm);
82ba1be6 1226 Safefree(PL_reg_poscache);
dd28f7bb 1227 free_tied_hv_pool();
3280af22 1228 Safefree(PL_op_mask);
cf36064f 1229 Safefree(PL_psig_name);
bf9cdc68 1230 PL_psig_name = (SV**)NULL;
d525a7b2 1231 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1232 {
1233 /* We need to NULL PL_psig_pend first, so that
1234 signal handlers know not to use it */
1235 int *psig_save = PL_psig_pend;
1236 PL_psig_pend = (int*)NULL;
1237 Safefree(psig_save);
1238 }
6e72f9df 1239 nuke_stacks();
284167a5
SM
1240 TAINTING_set(FALSE);
1241 TAINT_WARN_set(FALSE);
3280af22 1242 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1243 PL_debug = 0;
ac27b0f5 1244
a0d0e21e 1245 DEBUG_P(debprofdump());
d33b2eba 1246
e5dd39fc 1247#ifdef USE_REENTRANT_API
10bc17b6 1248 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1249#endif
1250
612f20c3
GS
1251 sv_free_arenas();
1252
5d9a96ca
DM
1253 while (PL_regmatch_slab) {
1254 regmatch_slab *s = PL_regmatch_slab;
1255 PL_regmatch_slab = PL_regmatch_slab->next;
1256 Safefree(s);
1257 }
1258
fc36a67e
PP
1259 /* As the absolutely last thing, free the non-arena SV for mess() */
1260
3280af22 1261 if (PL_mess_sv) {
f350b448
NC
1262 /* we know that type == SVt_PVMG */
1263
9c63abab 1264 /* it could have accumulated taint magic */
f350b448
NC
1265 MAGIC* mg;
1266 MAGIC* moremagic;
1267 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1268 moremagic = mg->mg_moremagic;
1269 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1270 && mg->mg_len >= 0)
1271 Safefree(mg->mg_ptr);
1272 Safefree(mg);
9c63abab 1273 }
f350b448 1274
fc36a67e 1275 /* we know that type >= SVt_PV */
8bd4d4c5 1276 SvPV_free(PL_mess_sv);
3280af22
NIS
1277 Safefree(SvANY(PL_mess_sv));
1278 Safefree(PL_mess_sv);
a0714e2c 1279 PL_mess_sv = NULL;
fc36a67e 1280 }
37038d91 1281 return STATUS_EXIT;
79072805
LW
1282}
1283
954c1994
GS
1284/*
1285=for apidoc perl_free
1286
1287Releases a Perl interpreter. See L<perlembed>.
1288
1289=cut
1290*/
1291
79072805 1292void
0cb96387 1293perl_free(pTHXx)
79072805 1294{
5174512c
NC
1295 dVAR;
1296
7918f24d
NC
1297 PERL_ARGS_ASSERT_PERL_FREE;
1298
c301d606
DM
1299 if (PL_veto_cleanup)
1300 return;
1301
7cb608b5 1302#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1303 {
1304 /*
1305 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1306 * value as we're probably hunting memory leaks then
1307 */
36e77d41 1308 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1309 const U32 old_debug = PL_debug;
55ef9aae
MHM
1310 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1311 thread at thread exit. */
4fd0a9b8
NC
1312 if (DEBUG_m_TEST) {
1313 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1314 "free this thread's memory\n");
1315 PL_debug &= ~ DEBUG_m_FLAG;
1316 }
55ef9aae
MHM
1317 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1318 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1319 PL_debug = old_debug;
55ef9aae
MHM
1320 }
1321 }
7cb608b5
NC
1322#endif
1323
acfe0abc 1324#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1325# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1326 {
acfe0abc 1327# ifdef NETWARE
7af12a34 1328 void *host = nw_internal_host;
acfe0abc 1329# else
7af12a34 1330 void *host = w32_internal_host;
acfe0abc 1331# endif
7af12a34 1332 PerlMem_free(aTHXx);
acfe0abc 1333# ifdef NETWARE
7af12a34 1334 nw_delete_internal_host(host);
acfe0abc 1335# else
7af12a34 1336 win32_delete_internal_host(host);
acfe0abc 1337# endif
7af12a34 1338 }
1c0ca838
GS
1339# else
1340 PerlMem_free(aTHXx);
1341# endif
acfe0abc
GS
1342#else
1343 PerlMem_free(aTHXx);
76e3520e 1344#endif
79072805
LW
1345}
1346
b7f7fff6 1347#if defined(USE_ITHREADS)
aebd1ac7
GA
1348/* provide destructors to clean up the thread key when libperl is unloaded */
1349#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1350
826955bd 1351#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1352#pragma fini "perl_fini"
666ad1ec
GA
1353#elif defined(__sun) && !defined(__GNUC__)
1354#pragma fini (perl_fini)
aebd1ac7
GA
1355#endif
1356
0dbb1585
AL
1357static void
1358#if defined(__GNUC__)
1359__attribute__((destructor))
aebd1ac7 1360#endif
de009b76 1361perl_fini(void)
aebd1ac7 1362{
27da23d5 1363 dVAR;
c301d606 1364 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1365 FREE_THREAD_KEY;
1366}
1367
1368#endif /* WIN32 */
1369#endif /* THREADS */
1370
4b556e6c 1371void
864dbfa3 1372Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1373{
97aff369 1374 dVAR;
3280af22
NIS
1375 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1376 PL_exitlist[PL_exitlistlen].fn = fn;
1377 PL_exitlist[PL_exitlistlen].ptr = ptr;
1378 ++PL_exitlistlen;
4b556e6c
JD
1379}
1380
b7975bdd
NC
1381STATIC void
1382S_set_caret_X(pTHX) {
97aff369 1383 dVAR;
fafc274c 1384 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1385 if (tmpgv) {
0f1723e1 1386 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1387#if defined(OS2)
1388 sv_setpv(caret_x, os2_execname(aTHX));
1389#else
2982a345
NC
1390# ifdef USE_KERN_PROC_PATHNAME
1391 size_t size = 0;
1392 int mib[4];
1393 mib[0] = CTL_KERN;
1394 mib[1] = KERN_PROC;
1395 mib[2] = KERN_PROC_PATHNAME;
1396 mib[3] = -1;
1397
1398 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1399 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1400 sv_grow(caret_x, size);
1401
1402 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1403 && size > 2) {
1404 SvPOK_only(caret_x);
1405 SvCUR_set(caret_x, size - 1);
1406 SvTAINT(caret_x);
1407 return;
1408 }
1409 }
ae60cb46
NC
1410# elif defined(USE_NSGETEXECUTABLEPATH)
1411 char buf[1];
1412 uint32_t size = sizeof(buf);
ae60cb46
NC
1413
1414 _NSGetExecutablePath(buf, &size);
1415 if (size < MAXPATHLEN * MAXPATHLEN) {
1416 sv_grow(caret_x, size);
1417 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1418 char *const tidied = realpath(SvPVX(caret_x), NULL);
1419 if (tidied) {
1420 sv_setpv(caret_x, tidied);
1421 free(tidied);
1422 } else {
1423 SvPOK_only(caret_x);
1424 SvCUR_set(caret_x, size);
1425 }
1426 return;
1427 }
1428 }
2982a345 1429# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1430 char buf[MAXPATHLEN];
1431 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1432
1433 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1434 includes a spurious NUL which will cause $^X to fail in system
1435 or backticks (this will prevent extensions from being built and
1436 many tests from working). readlink is not meant to add a NUL.
1437 Normal readlink works fine.
1438 */
1439 if (len > 0 && buf[len-1] == '\0') {
1440 len--;
1441 }
1442
1443 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1444 returning the text "unknown" from the readlink rather than the path
1445 to the executable (or returning an error from the readlink). Any
1446 valid path has a '/' in it somewhere, so use that to validate the
1447 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1448 */
1449 if (len > 0 && memchr(buf, '/', len)) {
1450 sv_setpvn(caret_x, buf, len);
82552a95 1451 return;
700dd4f8 1452 }
82552a95
NC
1453# endif
1454 /* Fallback to this: */
0f1723e1 1455 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1456#endif
b7975bdd
NC
1457 }
1458}
1459
954c1994
GS
1460/*
1461=for apidoc perl_parse
1462
1463Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1464
1465=cut
1466*/
1467
03d9f026
FC
1468#define SET_CURSTASH(newstash) \
1469 if (PL_curstash != newstash) { \
1470 SvREFCNT_dec(PL_curstash); \
1471 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1472 }
1473
79072805 1474int
0cb96387 1475perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1476{
27da23d5 1477 dVAR;
6224f72b 1478 I32 oldscope;
6224f72b 1479 int ret;
db36c5a1 1480 dJMPENV;
8d063cd8 1481
7918f24d
NC
1482 PERL_ARGS_ASSERT_PERL_PARSE;
1483#ifndef MULTIPLICITY
ed6c66dd 1484 PERL_UNUSED_ARG(my_perl);
7918f24d 1485#endif
7dc86639 1486#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1487 {
7dc86639
YO
1488 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1489
1490 if (s && (atoi(s) == 1)) {
1491 unsigned char *seed= PERL_HASH_SEED;
1492 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1493 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1494 while (seed < seed_end) {
1495 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1496 }
1497 PerlIO_printf(Perl_debug_log, "\n");
1498 }
b0891165
JH
1499 }
1500#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1501 PL_origargc = argc;
e2975953 1502 PL_origargv = argv;
a0d0e21e 1503
a2722ac9
GA
1504 if (PL_origalen != 0) {
1505 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1506 }
1507 else {
3cb9023d
JH
1508 /* Set PL_origalen be the sum of the contiguous argv[]
1509 * elements plus the size of the env in case that it is
e9137a8e 1510 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1511 * as the maximum modifiable length of $0. In the worst case
1512 * the area we are able to modify is limited to the size of
43c32782 1513 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1514 * --jhi */
e1ec3a88 1515 const char *s = NULL;
54bfe034 1516 int i;
1b6737cc 1517 const UV mask =
7d8e7db3 1518 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1519 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1520 const UV aligned =
43c32782
JH
1521 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1522
1523 /* See if all the arguments are contiguous in memory. Note
1524 * that 'contiguous' is a loose term because some platforms
1525 * align the argv[] and the envp[]. If the arguments look
1526 * like non-aligned, assume that they are 'strictly' or
1527 * 'traditionally' contiguous. If the arguments look like
1528 * aligned, we just check that they are within aligned
1529 * PTRSIZE bytes. As long as no system has something bizarre
1530 * like the argv[] interleaved with some other data, we are
1531 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1532 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1533 while (*s) s++;
1534 for (i = 1; i < PL_origargc; i++) {
1535 if ((PL_origargv[i] == s + 1
43c32782 1536#ifdef OS2
c8941eeb 1537 || PL_origargv[i] == s + 2
43c32782 1538#endif
c8941eeb
JH
1539 )
1540 ||
1541 (aligned &&
1542 (PL_origargv[i] > s &&
1543 PL_origargv[i] <=
1544 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1545 )
1546 {
1547 s = PL_origargv[i];
1548 while (*s) s++;
1549 }
1550 else
1551 break;
54bfe034 1552 }
54bfe034 1553 }
a4a109c2
JD
1554
1555#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1556 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1557 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1558 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1559 ||
1560 (aligned &&
1561 (PL_origenviron[0] > s &&
1562 PL_origenviron[0] <=
1563 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1564 )
1565 {
9d419b5f 1566#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1567 s = PL_origenviron[0];
1568 while (*s) s++;
1569#endif
bd61b366 1570 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1571 /* Force copy of environment. */
1572 for (i = 1; PL_origenviron[i]; i++) {
1573 if (PL_origenviron[i] == s + 1
1574 ||
1575 (aligned &&
1576 (PL_origenviron[i] > s &&
1577 PL_origenviron[i] <=
1578 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1579 )
1580 {
1581 s = PL_origenviron[i];
1582 while (*s) s++;
1583 }
1584 else
1585 break;
54bfe034 1586 }
43c32782 1587 }
54bfe034 1588 }
a4a109c2
JD
1589#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1590
2d2af554 1591 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1592 }
1593
3280af22 1594 if (PL_do_undump) {
a0d0e21e
LW
1595
1596 /* Come here if running an undumped a.out. */
1597
3280af22
NIS
1598 PL_origfilename = savepv(argv[0]);
1599 PL_do_undump = FALSE;
a0d0e21e 1600 cxstack_ix = -1; /* start label stack again */
748a9306 1601 init_ids();
284167a5 1602 assert (!TAINT_get);
b7975bdd
NC
1603 TAINT;
1604 S_set_caret_X(aTHX);
1605 TAINT_NOT;
a0d0e21e
LW
1606 init_postdump_symbols(argc,argv,env);
1607 return 0;
1608 }
1609
3280af22 1610 if (PL_main_root) {
3280af22 1611 op_free(PL_main_root);
5f66b61c 1612 PL_main_root = NULL;
ff0cee69 1613 }
5f66b61c 1614 PL_main_start = NULL;
3280af22 1615 SvREFCNT_dec(PL_main_cv);
601f1833 1616 PL_main_cv = NULL;
79072805 1617
3280af22
NIS
1618 time(&PL_basetime);
1619 oldscope = PL_scopestack_ix;
599cee73 1620 PL_dowarn = G_WARN_OFF;
f86702cc 1621
14dd3ad8 1622 JMPENV_PUSH(ret);
6224f72b 1623 switch (ret) {
312caa8e 1624 case 0:
14dd3ad8 1625 parse_body(env,xsinit);
9ebf26ad 1626 if (PL_unitcheckav) {
3c10abe3 1627 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1628 }
1629 if (PL_checkav) {
ca7b837b 1630 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1631 call_list(oldscope, PL_checkav);
9ebf26ad 1632 }
14dd3ad8
GS
1633 ret = 0;
1634 break;
6224f72b
GS
1635 case 1:
1636 STATUS_ALL_FAILURE;
1637 /* FALL THROUGH */
1638 case 2:
1639 /* my_exit() was called */
3280af22 1640 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1641 LEAVE;
1642 FREETMPS;
03d9f026 1643 SET_CURSTASH(PL_defstash);
9ebf26ad 1644 if (PL_unitcheckav) {
3c10abe3 1645 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1646 }
1647 if (PL_checkav) {
ca7b837b 1648 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1649 call_list(oldscope, PL_checkav);
9ebf26ad 1650 }
37038d91 1651 ret = STATUS_EXIT;
14dd3ad8 1652 break;
6224f72b 1653 case 3:
bf49b057 1654 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1655 ret = 1;
1656 break;
6224f72b 1657 }
14dd3ad8
GS
1658 JMPENV_POP;
1659 return ret;
1660}
1661
4a5df386
NC
1662/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1663 miniperl, and we need to see those flags reflected in the values here. */
1664
1665/* What this returns is subject to change. Use the public interface in Config.
1666 */
1667static void
1668S_Internals_V(pTHX_ CV *cv)
1669{
1670 dXSARGS;
1671#ifdef LOCAL_PATCH_COUNT
1672 const int local_patch_count = LOCAL_PATCH_COUNT;
1673#else
1674 const int local_patch_count = 0;
1675#endif
2dc296d2 1676 const int entries = 3 + local_patch_count;
4a5df386 1677 int i;
fe1c5936 1678 static const char non_bincompat_options[] =
4a5df386
NC
1679# ifdef DEBUGGING
1680 " DEBUGGING"
1681# endif
1682# ifdef NO_MATHOMS
0d311fbe 1683 " NO_MATHOMS"
4a5df386
NC
1684# endif
1685# ifdef PERL_DISABLE_PMC
1686 " PERL_DISABLE_PMC"
1687# endif
1688# ifdef PERL_DONT_CREATE_GVSV
1689 " PERL_DONT_CREATE_GVSV"
1690# endif
9a044a43
NC
1691# ifdef PERL_EXTERNAL_GLOB
1692 " PERL_EXTERNAL_GLOB"
1693# endif
4a5df386
NC
1694# ifdef PERL_IS_MINIPERL
1695 " PERL_IS_MINIPERL"
1696# endif
1697# ifdef PERL_MALLOC_WRAP
1698 " PERL_MALLOC_WRAP"
1699# endif
1700# ifdef PERL_MEM_LOG
1701 " PERL_MEM_LOG"
1702# endif
1703# ifdef PERL_MEM_LOG_NOIMPL
1704 " PERL_MEM_LOG_NOIMPL"
1705# endif
c3cf41ec
NC
1706# ifdef PERL_PRESERVE_IVUV
1707 " PERL_PRESERVE_IVUV"
1708# endif
c051e30b
NC
1709# ifdef PERL_RELOCATABLE_INCPUSH
1710 " PERL_RELOCATABLE_INCPUSH"
1711# endif
4a5df386
NC
1712# ifdef PERL_USE_DEVEL
1713 " PERL_USE_DEVEL"
1714# endif
1715# ifdef PERL_USE_SAFE_PUTENV
1716 " PERL_USE_SAFE_PUTENV"
1717# endif
a3749cf3
NC
1718# ifdef UNLINK_ALL_VERSIONS
1719 " UNLINK_ALL_VERSIONS"
1720# endif
de618ee4
NC
1721# ifdef USE_ATTRIBUTES_FOR_PERLIO
1722 " USE_ATTRIBUTES_FOR_PERLIO"
1723# endif
4a5df386
NC
1724# ifdef USE_FAST_STDIO
1725 " USE_FAST_STDIO"
1726# endif
98548bdf
NC
1727# ifdef USE_LOCALE
1728 " USE_LOCALE"
1729# endif
98548bdf
NC
1730# ifdef USE_LOCALE_CTYPE
1731 " USE_LOCALE_CTYPE"
1732# endif
5a8d8935
NC
1733# ifdef USE_PERL_ATOF
1734 " USE_PERL_ATOF"
1735# endif
0d311fbe
NC
1736# ifdef USE_SITECUSTOMIZE
1737 " USE_SITECUSTOMIZE"
1738# endif
4a5df386
NC
1739 ;
1740 PERL_UNUSED_ARG(cv);
1741 PERL_UNUSED_ARG(items);
1742
1743 EXTEND(SP, entries);
1744
1745 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1746 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1747 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1748
1749#ifdef __DATE__
1750# ifdef __TIME__
1751 PUSHs(Perl_newSVpvn_flags(aTHX_
1752 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1753 SVs_TEMP));
1754# else
1755 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1756 SVs_TEMP));
1757# endif
1758#else
1759 PUSHs(&PL_sv_undef);
1760#endif
1761
4a5df386
NC
1762 for (i = 1; i <= local_patch_count; i++) {
1763 /* This will be an undef, if PL_localpatches[i] is NULL. */
1764 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1765 }
1766
1767 XSRETURN(entries);
1768}
1769
be71fc8f
NC
1770#define INCPUSH_UNSHIFT 0x01
1771#define INCPUSH_ADD_OLD_VERS 0x02
1772#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1773#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1774#define INCPUSH_NOT_BASEDIR 0x10
1775#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1776#define INCPUSH_ADD_SUB_DIRS \
1777 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1778
312caa8e 1779STATIC void *
14dd3ad8 1780S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1781{
27da23d5 1782 dVAR;
2f9285f8 1783 PerlIO *rsfp;
312caa8e 1784 int argc = PL_origargc;
8f42b153 1785 char **argv = PL_origargv;
e1ec3a88 1786 const char *scriptname = NULL;
312caa8e 1787 VOL bool dosearch = FALSE;
eb578fdb 1788 char c;
737c24fc 1789 bool doextract = FALSE;
bd61b366 1790 const char *cddir = NULL;
ab019eaa 1791#ifdef USE_SITECUSTOMIZE
20ef40cf 1792 bool minus_f = FALSE;
ab019eaa 1793#endif
95670bde 1794 SV *linestr_sv = NULL;
5486870f 1795 bool add_read_e_script = FALSE;
87606032 1796 U32 lex_start_flags = 0;
009d90df 1797
ca7b837b 1798 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1799
6224f72b 1800 init_main_stash();
54310121 1801
c7030b81
NC
1802 {
1803 const char *s;
6224f72b
GS
1804 for (argc--,argv++; argc > 0; argc--,argv++) {
1805 if (argv[0][0] != '-' || !argv[0][1])
1806 break;
6224f72b
GS
1807 s = argv[0]+1;
1808 reswitch:
47f56822 1809 switch ((c = *s)) {
729a02f2 1810 case 'C':
1d5472a9
GS
1811#ifndef PERL_STRICT_CR
1812 case '\r':
1813#endif
6224f72b
GS
1814 case ' ':
1815 case '0':
1816 case 'F':
1817 case 'a':
1818 case 'c':
1819 case 'd':
1820 case 'D':
1821 case 'h':
1822 case 'i':
1823 case 'l':
1824 case 'M':
1825 case 'm':
1826 case 'n':
1827 case 'p':
1828 case 's':
1829 case 'u':
1830 case 'U':
1831 case 'v':
599cee73
PM
1832 case 'W':
1833 case 'X':
6224f72b 1834 case 'w':
97bd5664 1835 if ((s = moreswitches(s)))
6224f72b
GS
1836 goto reswitch;
1837 break;
33b78306 1838
1dbad523 1839 case 't':
284167a5
SM
1840#if SILENT_NO_TAINT_SUPPORT
1841 /* silently ignore */
1842#elif NO_TAINT_SUPPORT
1843 Perl_croak("This perl was compiled without taint support. "
1844 "Cowardly refusing to run with -t or -T flags");
1845#else
22f7c9c9 1846 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1847 if( !TAINTING_get ) {
1848 TAINT_WARN_set(TRUE);
1849 TAINTING_set(TRUE);
317ea90d 1850 }
284167a5 1851#endif
317ea90d
MS
1852 s++;
1853 goto reswitch;
6224f72b 1854 case 'T':
284167a5
SM
1855#if SILENT_NO_TAINT_SUPPORT
1856 /* silently ignore */
1857#elif NO_TAINT_SUPPORT
1858 Perl_croak("This perl was compiled without taint support. "
1859 "Cowardly refusing to run with -t or -T flags");
1860#else
22f7c9c9 1861 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1862 TAINTING_set(TRUE);
1863 TAINT_WARN_set(FALSE);
1864#endif
6224f72b
GS
1865 s++;
1866 goto reswitch;
f86702cc 1867
bc9b29db
RH
1868 case 'E':
1869 PL_minus_E = TRUE;
1870 /* FALL THROUGH */
6224f72b 1871 case 'e':
f20b2998 1872 forbid_setid('e', FALSE);
3280af22 1873 if (!PL_e_script) {
396482e1 1874 PL_e_script = newSVpvs("");
5486870f 1875 add_read_e_script = TRUE;
6224f72b
GS
1876 }
1877 if (*++s)
3280af22 1878 sv_catpv(PL_e_script, s);
6224f72b 1879 else if (argv[1]) {
3280af22 1880 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1881 argc--,argv++;
1882 }
1883 else
47f56822 1884 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1885 sv_catpvs(PL_e_script, "\n");
6224f72b 1886 break;
afe37c7d 1887
20ef40cf 1888 case 'f':
f5542d3a 1889#ifdef USE_SITECUSTOMIZE
20ef40cf 1890 minus_f = TRUE;
f5542d3a 1891#endif
20ef40cf
GA
1892 s++;
1893 goto reswitch;
1894
6224f72b 1895 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1896 forbid_setid('I', FALSE);
bd61b366 1897 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1898 argc--,argv++;
1899 }
6224f72b 1900 if (s && *s) {
0df16ed7 1901 STRLEN len = strlen(s);
55b4bc1c 1902 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1903 }
1904 else
a67e862a 1905 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1906 break;
6224f72b 1907 case 'S':
f20b2998 1908 forbid_setid('S', FALSE);
6224f72b
GS
1909 dosearch = TRUE;
1910 s++;
1911 goto reswitch;
1912 case 'V':
7edfd0ef
NC
1913 {
1914 SV *opts_prog;
1915
7edfd0ef 1916 if (*++s != ':') {
37ca4a5b 1917 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1918 }
1919 else {
1920 ++s;
1921 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1922 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1923 0, s, 0);
1924 s += strlen(s);
1925 }
37ca4a5b 1926 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1927 /* don't look for script or read stdin */
1928 scriptname = BIT_BUCKET;
1929 goto reswitch;
6224f72b 1930 }
6224f72b 1931 case 'x':
737c24fc 1932 doextract = TRUE;
6224f72b 1933 s++;
304334da 1934 if (*s)
f4c556ac 1935 cddir = s;
6224f72b
GS
1936 break;
1937 case 0:
1938 break;
1939 case '-':
1940 if (!*++s || isSPACE(*s)) {
1941 argc--,argv++;
1942 goto switch_end;
1943 }
ee8bc8b7
NC
1944 /* catch use of gnu style long options.
1945 Both of these exit immediately. */
1946 if (strEQ(s, "version"))
1947 minus_v();
1948 if (strEQ(s, "help"))
1949 usage();
6224f72b
GS
1950 s--;
1951 /* FALL THROUGH */
1952 default:
cea2e8a9 1953 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1954 }
1955 }
c7030b81
NC
1956 }
1957
6224f72b 1958 switch_end:
54310121 1959
c7030b81
NC
1960 {
1961 char *s;
1962
f675dbe5
CB
1963 if (
1964#ifndef SECURE_INTERNAL_GETENV
284167a5 1965 !TAINTING_get &&
f675dbe5 1966#endif
cf756827 1967 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1968 {
74288ac8
GS
1969 while (isSPACE(*s))
1970 s++;
317ea90d 1971 if (*s == '-' && *(s+1) == 'T') {
284167a5
SM
1972#if SILENT_NO_TAINT_SUPPORT
1973 /* silently ignore */
1974#elif NO_TAINT_SUPPORT
1975 Perl_croak("This perl was compiled without taint support. "
1976 "Cowardly refusing to run with -t or -T flags");
1977#else
22f7c9c9 1978 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1979 TAINTING_set(TRUE);
1980 TAINT_WARN_set(FALSE);
1981#endif
317ea90d 1982 }
74288ac8 1983 else {
bd61b366 1984 char *popt_copy = NULL;
74288ac8 1985 while (s && *s) {
54913509 1986 const char *d;
74288ac8
GS
1987 while (isSPACE(*s))
1988 s++;
1989 if (*s == '-') {
1990 s++;
1991 if (isSPACE(*s))
1992 continue;
1993 }
4ea8f8fb 1994 d = s;
74288ac8
GS
1995 if (!*s)
1996 break;
2b622f1a 1997 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1998 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1999 while (++s && *s) {
2000 if (isSPACE(*s)) {
cf756827 2001 if (!popt_copy) {
bfa6c418
NC
2002 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2003 s = popt_copy + (s - d);
2004 d = popt_copy;
cf756827 2005 }
4ea8f8fb
MS
2006 *s++ = '\0';
2007 break;
2008 }
2009 }
1c4db469 2010 if (*d == 't') {
284167a5
SM
2011#if SILENT_NO_TAINT_SUPPORT
2012 /* silently ignore */
2013#elif NO_TAINT_SUPPORT
2014 Perl_croak("This perl was compiled without taint support. "
2015 "Cowardly refusing to run with -t or -T flags");
2016#else
2017 if( !TAINTING_get) {
2018 TAINT_WARN_set(TRUE);
2019 TAINTING_set(TRUE);
317ea90d 2020 }
284167a5 2021#endif
1c4db469 2022 } else {
97bd5664 2023 moreswitches(d);
1c4db469 2024 }
6224f72b 2025 }
6224f72b
GS
2026 }
2027 }
c7030b81 2028 }
a0d0e21e 2029
c29067d7
CH
2030 /* Set $^X early so that it can be used for relocatable paths in @INC */
2031 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2032 assert (!TAINT_get);
c29067d7
CH
2033 TAINT;
2034 S_set_caret_X(aTHX);
2035 TAINT_NOT;
2036
43c0c913 2037#if defined(USE_SITECUSTOMIZE)
20ef40cf 2038 if (!minus_f) {
43c0c913 2039 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2040 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2041 ie a q() operator with a NUL byte as a the delimiter. This avoids
2042 problems with pathnames containing (say) ' */
43c0c913
NC
2043# ifdef PERL_IS_MINIPERL
2044 AV *const inc = GvAV(PL_incgv);
2045 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2046
2047 if (inc0) {
2048 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2049 Perl_newSVpvf(aTHX_
fc81b718
NC
2050 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2051 0, *inc0, 0,
2052 0, *inc0, 0));
43c0c913
NC
2053 }
2054# else
2055 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2056 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2057 if (raw_sitelib) {
2058 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2059 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2060 INCPUSH_CAN_RELOCATE);
2061 const char *const sitelib = SvPVX(sitelib_sv);
2062 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2063 Perl_newSVpvf(aTHX_
2064 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2065 0, sitelib, 0,
2066 0, sitelib, 0));
2067 assert (SvREFCNT(sitelib_sv) == 1);
2068 SvREFCNT_dec(sitelib_sv);
2069 }
43c0c913 2070# endif
20ef40cf
GA
2071 }
2072#endif
2073
6224f72b
GS
2074 if (!scriptname)
2075 scriptname = argv[0];
3280af22 2076 if (PL_e_script) {
6224f72b
GS
2077 argc++,argv--;
2078 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2079 }
bd61b366 2080 else if (scriptname == NULL) {
6224f72b
GS
2081#ifdef MSDOS
2082 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2083 moreswitches("h");
6224f72b
GS
2084#endif
2085 scriptname = "-";
2086 }
2087
284167a5 2088 assert (!TAINT_get);
2cace6ac 2089 init_perllib();
6224f72b 2090
a52eba0e 2091 {
f20b2998 2092 bool suidscript = FALSE;
829372d3 2093
8d113837 2094 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2095 if (!rsfp) {
2096 rsfp = PerlIO_stdin();
87606032 2097 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2098 }
6224f72b 2099
b24bc095 2100 validate_suid(rsfp);
6224f72b 2101
64ca3a65 2102#ifndef PERL_MICRO
a52eba0e
NC
2103# if defined(SIGCHLD) || defined(SIGCLD)
2104 {
2105# ifndef SIGCHLD
2106# define SIGCHLD SIGCLD
2107# endif
2108 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2109 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2110 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2111 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2112 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2113 }
0b5b802d 2114 }
a52eba0e 2115# endif
64ca3a65 2116#endif
0b5b802d 2117
737c24fc 2118 if (doextract) {
faef540c 2119
f20b2998 2120 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2121 setuid scripts. */
2122 forbid_setid('x', suidscript);
f20b2998 2123 /* Hence you can't get here if suidscript is true */
faef540c 2124
95670bde
NC
2125 linestr_sv = newSV_type(SVt_PV);
2126 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2127 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2128 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2129 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2130 }
f4c556ac 2131 }
6224f72b 2132
ea726b52 2133 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2134 CvUNIQUE_on(PL_compcv);
2135
dd2155a4 2136 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2137
dd69841b
BB
2138 PL_isarev = newHV();
2139
0c4f7ff0 2140 boot_core_PerlIO();
6224f72b 2141 boot_core_UNIVERSAL();
e1a479c5 2142 boot_core_mro();
4a5df386 2143 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2144
2145 if (xsinit)
acfe0abc 2146 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2147#ifndef PERL_MICRO
739a0b84 2148#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2149 init_os_extras();
6224f72b 2150#endif
64ca3a65 2151#endif
6224f72b 2152
29209bc5 2153#ifdef USE_SOCKS
1b9c9cf5
DH
2154# ifdef HAS_SOCKS5_INIT
2155 socks5_init(argv[0]);
2156# else
29209bc5 2157 SOCKSinit(argv[0]);
1b9c9cf5 2158# endif
ac27b0f5 2159#endif
29209bc5 2160
6224f72b
GS
2161 init_predump_symbols();
2162 /* init_postdump_symbols not currently designed to be called */
2163 /* more than once (ENV isn't cleared first, for example) */
2164 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2165 if (!PL_do_undump)
6224f72b
GS
2166 init_postdump_symbols(argc,argv,env);
2167
27da23d5
JH
2168 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2169 * or explicitly in some platforms.
085a54d9 2170 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2171 * look like the user wants to use UTF-8. */
a0fd4948 2172#if defined(__SYMBIAN32__)
27da23d5
JH
2173 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2174#endif
e27b5b51 2175# ifndef PERL_IS_MINIPERL
06e66572
JH
2176 if (PL_unicode) {
2177 /* Requires init_predump_symbols(). */
a05d7ebb 2178 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2179 IO* io;
2180 PerlIO* fp;
2181 SV* sv;
2182
a05d7ebb 2183 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2184 * and the default open disciplines. */
a05d7ebb
JH
2185 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2186 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2187 (fp = IoIFP(io)))
2188 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2189 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2190 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2191 (fp = IoOFP(io)))
2192 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2193 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2194 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2195 (fp = IoOFP(io)))
2196 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2197 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2198 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2199 SVt_PV)))) {
a05d7ebb
JH
2200 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2201 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2202 if (in) {
2203 if (out)
76f68e9b 2204 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2205 else
76f68e9b 2206 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2207 }
2208 else if (out)
76f68e9b 2209 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2210 SvSETMAGIC(sv);
2211 }
b310b053
JH
2212 }
2213 }
e27b5b51 2214#endif
b310b053 2215
c7030b81
NC
2216 {
2217 const char *s;
4ffa73a3
JH
2218 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2219 if (strEQ(s, "unsafe"))
2220 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2221 else if (strEQ(s, "safe"))
2222 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2223 else
2224 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2225 }
c7030b81 2226 }
4ffa73a3 2227
81d86705 2228#ifdef PERL_MAD
c7030b81
NC
2229 {
2230 const char *s;
284167a5 2231 if (!TAINTING_get &&
2cc12391 2232 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC
2233 PL_madskills = 1;
2234 PL_minus_c = 1;
2235 if (!s || !s[0])
2236 PL_xmlfp = PerlIO_stdout();
2237 else {
2238 PL_xmlfp = PerlIO_open(s, "w");
2239 if (!PL_xmlfp)
2240 Perl_croak(aTHX_ "Can't open %s", s);
2241 }
1a9a51d4 2242 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2243 }
c7030b81
NC
2244 }
2245
2246 {
2247 const char *s;
81d86705
NC
2248 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2249 PL_madskills = atoi(s);
1a9a51d4 2250 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2251 }
c7030b81 2252 }
81d86705
NC
2253#endif
2254
87606032 2255 lex_start(linestr_sv, rsfp, lex_start_flags);
95670bde
NC
2256 if(linestr_sv)
2257 SvREFCNT_dec(linestr_sv);
2258
219f7226 2259 PL_subname = newSVpvs("main");
6224f72b 2260
5486870f
DM
2261 if (add_read_e_script)
2262 filter_add(read_e_script, NULL);
2263
6224f72b
GS
2264 /* now parse the script */
2265
93189314 2266 SETERRNO(0,SS_NORMAL);
28ac2b49 2267 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2268 if (PL_minus_c)
cea2e8a9 2269 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2270 else {
cea2e8a9 2271 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2272 PL_origfilename);
6224f72b
GS
2273 }
2274 }
57843af0 2275 CopLINE_set(PL_curcop, 0);
03d9f026 2276 SET_CURSTASH(PL_defstash);
3280af22
NIS
2277 if (PL_e_script) {
2278 SvREFCNT_dec(PL_e_script);
a0714e2c 2279 PL_e_script = NULL;
6224f72b
GS
2280 }
2281
3280af22 2282 if (PL_do_undump)
6224f72b
GS
2283 my_unexec();
2284
57843af0
GS
2285 if (isWARN_ONCE) {
2286 SAVECOPFILE(PL_curcop);
2287 SAVECOPLINE(PL_curcop);
3280af22 2288 gv_check(PL_defstash);
57843af0 2289 }
6224f72b
GS
2290
2291 LEAVE;
2292 FREETMPS;
2293
2294#ifdef MYMALLOC
f6a607bc
RGS
2295 {
2296 const char *s;
6224f72b
GS
2297 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2298 dump_mstats("after compilation:");
f6a607bc 2299 }
6224f72b
GS
2300#endif
2301
2302 ENTER;
febb3a6d 2303 PL_restartjmpenv = NULL;
3280af22 2304 PL_restartop = 0;
312caa8e 2305 return NULL;
6224f72b
GS
2306}
2307
954c1994
GS
2308/*
2309=for apidoc perl_run
2310
2311Tells a Perl interpreter to run. See L<perlembed>.
2312
2313=cut
2314*/
2315
6224f72b 2316int
0cb96387 2317perl_run(pTHXx)
6224f72b 2318{
97aff369 2319 dVAR;
6224f72b 2320 I32 oldscope;
14dd3ad8 2321 int ret = 0;
db36c5a1 2322 dJMPENV;
6224f72b 2323
7918f24d
NC
2324 PERL_ARGS_ASSERT_PERL_RUN;
2325#ifndef MULTIPLICITY
ed6c66dd 2326 PERL_UNUSED_ARG(my_perl);
7918f24d 2327#endif
9d4ba2ae 2328
3280af22 2329 oldscope = PL_scopestack_ix;
96e176bf
CL
2330#ifdef VMS
2331 VMSISH_HUSHED = 0;
2332#endif
6224f72b 2333
14dd3ad8 2334 JMPENV_PUSH(ret);
6224f72b
GS
2335 switch (ret) {
2336 case 1:
2337 cxstack_ix = -1; /* start context stack again */
312caa8e 2338 goto redo_body;
14dd3ad8 2339 case 0: /* normal completion */
14dd3ad8
GS
2340 redo_body:
2341 run_body(oldscope);
14dd3ad8
GS
2342 /* FALL THROUGH */
2343 case 2: /* my_exit() */
3280af22 2344 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2345 LEAVE;
2346 FREETMPS;
03d9f026 2347 SET_CURSTASH(PL_defstash);
3a1ee7e8 2348 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2349 PL_endav && !PL_minus_c) {
ca7b837b 2350 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2351 call_list(oldscope, PL_endav);
9ebf26ad 2352 }
6224f72b
GS
2353#ifdef MYMALLOC
2354 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2355 dump_mstats("after execution: ");
2356#endif
37038d91 2357 ret = STATUS_EXIT;
14dd3ad8 2358 break;
6224f72b 2359 case 3:
312caa8e
CS
2360 if (PL_restartop) {
2361 POPSTACK_TO(PL_mainstack);
2362 goto redo_body;
6224f72b 2363 }
5637ef5b 2364 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2365 FREETMPS;
14dd3ad8
GS
2366 ret = 1;
2367 break;
6224f72b
GS
2368 }
2369
14dd3ad8
GS
2370 JMPENV_POP;
2371 return ret;
312caa8e
CS
2372}
2373
dd374669 2374STATIC void
14dd3ad8
GS
2375S_run_body(pTHX_ I32 oldscope)
2376{
97aff369 2377 dVAR;
d3b97530
DM
2378 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2379 PL_sawampersand ? "Enabling" : "Omitting",
2380 (unsigned int)(PL_sawampersand)));
6224f72b 2381
3280af22 2382 if (!PL_restartop) {
81d86705
NC
2383#ifdef PERL_MAD
2384 if (PL_xmlfp) {
2385 xmldump_all();
2386 exit(0); /* less likely to core dump than my_exit(0) */
2387 }
2388#endif
cf2782cd 2389#ifdef DEBUGGING
f0e3f042
CS
2390 if (DEBUG_x_TEST || DEBUG_B_TEST)
2391 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2392 if (!DEBUG_q_TEST)
2393 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2394#endif
6224f72b 2395
3280af22 2396 if (PL_minus_c) {
bf49b057 2397 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2398 my_exit(0);
2399 }
3280af22 2400 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2401 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2402 if (PL_initav) {
ca7b837b 2403 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2404 call_list(oldscope, PL_initav);
9ebf26ad 2405 }
f1fac472 2406#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2407 if (PL_main_root && PL_main_root->op_slabbed)
2408 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2409#endif
6224f72b
GS
2410 }
2411
2412 /* do it */
2413
ca7b837b 2414 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2415
3280af22 2416 if (PL_restartop) {
febb3a6d 2417 PL_restartjmpenv = NULL;
533c011a 2418 PL_op = PL_restartop;
3280af22 2419 PL_restartop = 0;
cea2e8a9 2420 CALLRUNOPS(aTHX);
6224f72b 2421 }
3280af22
NIS
2422 else if (PL_main_start) {
2423 CvDEPTH(PL_main_cv) = 1;
533c011a 2424 PL_op = PL_main_start;
cea2e8a9 2425 CALLRUNOPS(aTHX);
6224f72b 2426 }
f6b3007c 2427 my_exit(0);
118e2215 2428 assert(0); /* NOTREACHED */
6224f72b
GS
2429}
2430
954c1994 2431/*
ccfc67b7
JH
2432=head1 SV Manipulation Functions
2433
954c1994
GS
2434=for apidoc p||get_sv
2435
64ace3f8
NC
2436Returns the SV of the specified Perl scalar. C<flags> are passed to
2437C<gv_fetchpv>. If C<GV_ADD> is set and the
2438Perl variable does not exist then it will be created. If C<flags> is zero
2439and the variable does not exist then NULL is returned.
954c1994
GS
2440
2441=cut
2442*/
2443
6224f72b 2444SV*
64ace3f8 2445Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2446{
2447 GV *gv;
7918f24d
NC
2448
2449 PERL_ARGS_ASSERT_GET_SV;
2450
64ace3f8 2451 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2452 if (gv)
2453 return GvSV(gv);
a0714e2c 2454 return NULL;
6224f72b
GS
2455}
2456
954c1994 2457/*
ccfc67b7
JH
2458=head1 Array Manipulation Functions
2459
954c1994
GS
2460=for apidoc p||get_av
2461
f0b90de1
SF
2462Returns the AV of the specified Perl global or package array with the given
2463name (so it won't work on lexical variables). C<flags> are passed
2464to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2465Perl variable does not exist then it will be created. If C<flags> is zero
2466and the variable does not exist then NULL is returned.
954c1994 2467
f0b90de1
SF
2468Perl equivalent: C<@{"$name"}>.
2469
954c1994
GS
2470=cut
2471*/
2472
6224f72b 2473AV*
cbfd0a87 2474Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2475{
cbfd0a87 2476 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2477
2478 PERL_ARGS_ASSERT_GET_AV;
2479
cbfd0a87 2480 if (flags)
6224f72b
GS
2481 return GvAVn(gv);
2482 if (gv)
2483 return GvAV(gv);
7d49f689 2484 return NULL;
6224f72b
GS
2485}
2486
954c1994 2487/*
ccfc67b7
JH
2488=head1 Hash Manipulation Functions
2489
954c1994
GS
2490=for apidoc p||get_hv
2491
6673a63c
NC
2492Returns the HV of the specified Perl hash. C<flags> are passed to
2493C<gv_fetchpv>. If C<GV_ADD> is set and the
2494Perl variable does not exist then it will be created. If C<flags> is zero
2495and the variable does not exist then NULL is returned.
954c1994
GS
2496
2497=cut
2498*/
2499
6224f72b 2500HV*
6673a63c 2501Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2502{
6673a63c 2503 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2504
2505 PERL_ARGS_ASSERT_GET_HV;
2506
6673a63c 2507 if (flags)
a0d0e21e
LW
2508 return GvHVn(gv);
2509 if (gv)
2510 return GvHV(gv);
5c284bb0 2511 return NULL;
a0d0e21e
LW
2512}
2513
954c1994 2514/*
ccfc67b7
JH
2515=head1 CV Manipulation Functions
2516
780a5241
NC
2517=for apidoc p||get_cvn_flags
2518
2519Returns the CV of the specified Perl subroutine. C<flags> are passed to
2520C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2521exist then it will be declared (which has the same effect as saying
2522C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2523then NULL is returned.
2524
954c1994
GS
2525=for apidoc p||get_cv
2526
780a5241 2527Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2528
2529=cut
2530*/
2531
a0d0e21e 2532CV*
780a5241 2533Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2534{
780a5241 2535 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2536
2537 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2538
334dda80
FC
2539 /* XXX this is probably not what they think they're getting.
2540 * It has the same effect as "sub name;", i.e. just a forward
2541 * declaration! */
780a5241 2542 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2543 return newSTUB(gv,0);
780a5241 2544 }
a0d0e21e 2545 if (gv)
8ebc5c01 2546 return GvCVu(gv);
601f1833 2547 return NULL;
a0d0e21e
LW
2548}
2549
2c67934f
NC
2550/* Nothing in core calls this now, but we can't replace it with a macro and
2551 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2552CV*
2553Perl_get_cv(pTHX_ const char *name, I32 flags)
2554{
7918f24d
NC
2555 PERL_ARGS_ASSERT_GET_CV;
2556
780a5241
NC
2557 return get_cvn_flags(name, strlen(name), flags);
2558}
2559
79072805
LW
2560/* Be sure to refetch the stack pointer after calling these routines. */
2561
954c1994 2562/*
ccfc67b7
JH
2563
2564=head1 Callback Functions
2565
954c1994
GS
2566=for apidoc p||call_argv
2567
f0b90de1
SF
2568Performs a callback to the specified named and package-scoped Perl subroutine
2569with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2570
2571Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2572
2573=cut
2574*/
2575
a0d0e21e 2576I32
5aaab254 2577Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2578
8ac85365
NIS
2579 /* See G_* flags in cop.h */
2580 /* null terminated arg list */
8990e307 2581{
97aff369 2582 dVAR;
a0d0e21e 2583 dSP;
8990e307 2584
7918f24d
NC
2585 PERL_ARGS_ASSERT_CALL_ARGV;
2586
924508f0 2587 PUSHMARK(SP);
a0d0e21e 2588 if (argv) {
8990e307 2589 while (*argv) {
6e449a3a 2590 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2591 argv++;
2592 }
a0d0e21e 2593 PUTBACK;
8990e307 2594 }
864dbfa3 2595 return call_pv(sub_name, flags);
8990e307
LW
2596}
2597
954c1994
GS
2598/*
2599=for apidoc p||call_pv
2600
2601Performs a callback to the specified Perl sub. See L<perlcall>.
2602
2603=cut
2604*/
2605
a0d0e21e 2606I32
864dbfa3 2607Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2608 /* name of the subroutine */
2609 /* See G_* flags in cop.h */
a0d0e21e 2610{
7918f24d
NC
2611 PERL_ARGS_ASSERT_CALL_PV;
2612
0da0e728 2613 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2614}
2615
954c1994
GS
2616/*
2617=for apidoc p||call_method
2618
2619Performs a callback to the specified Perl method. The blessed object must
2620be on the stack. See L<perlcall>.
2621
2622=cut
2623*/
2624
a0d0e21e 2625I32
864dbfa3 2626Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2627 /* name of the subroutine */
2628 /* See G_* flags in cop.h */
a0d0e21e 2629{
46ca9bac 2630 STRLEN len;
7918f24d
NC
2631 PERL_ARGS_ASSERT_CALL_METHOD;
2632
46ca9bac 2633 len = strlen(methname);
2634
2635 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2636 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2637}
2638
2639/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2640/*
2641=for apidoc p||call_sv
2642
2643Performs a callback to the Perl sub whose name is in the SV. See
2644L<perlcall>.
2645
2646=cut
2647*/
2648
a0d0e21e 2649I32
001d637e 2650Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2651 /* See G_* flags in cop.h */
a0d0e21e 2652{
27da23d5 2653 dVAR; dSP;
a0d0e21e 2654 LOGOP myop; /* fake syntax tree node */
968b3946 2655 UNOP method_op;
aa689395 2656 I32 oldmark;
8ea43dc8 2657 VOL I32 retval = 0;
a0d0e21e 2658 I32 oldscope;
54310121 2659 bool oldcatch = CATCH_GET;
6224f72b 2660 int ret;
c4420975 2661 OP* const oldop = PL_op;
db36c5a1 2662 dJMPENV;
1e422769 2663
7918f24d
NC
2664 PERL_ARGS_ASSERT_CALL_SV;
2665
a0d0e21e
LW
2666 if (flags & G_DISCARD) {
2667 ENTER;
2668 SAVETMPS;
2669 }
2f8edad0
NC
2670 if (!(flags & G_WANT)) {
2671 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2672 */
2673 flags |= G_SCALAR;
2674 }
a0d0e21e 2675
aa689395 2676 Zero(&myop, 1, LOGOP);
f51d4af5 2677 if (!(flags & G_NOARGS))
aa689395 2678 myop.op_flags |= OPf_STACKED;
4f911530 2679 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2680 SAVEOP();
533c011a 2681 PL_op = (OP*)&myop;
aa689395 2682
3280af22
NIS
2683 EXTEND(PL_stack_sp, 1);
2684 *++PL_stack_sp = sv;
aa689395 2685 oldmark = TOPMARK;
3280af22 2686 oldscope = PL_scopestack_ix;
a0d0e21e 2687
3280af22 2688 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2689 /* Handle first BEGIN of -d. */
3280af22 2690 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2691 /* Try harder, since this may have been a sighandler, thus
2692 * curstash may be meaningless. */
ea726b52 2693 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2694 && !(flags & G_NODEBUG))
5ff48db8 2695 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2696
968b3946
GS
2697 if (flags & G_METHOD) {
2698 Zero(&method_op, 1, UNOP);
5ff48db8 2699 method_op.op_next = (OP*)&myop;
968b3946 2700 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2701 method_op.op_type = OP_METHOD;
968b3946 2702 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2703 myop.op_type = OP_ENTERSUB;
f39d0b86 2704 PL_op = (OP*)&method_op;
968b3946
GS
2705 }
2706
312caa8e 2707 if (!(flags & G_EVAL)) {
0cdb2077 2708 CATCH_SET(TRUE);
d6f07c05 2709 CALL_BODY_SUB((OP*)&myop);
312caa8e 2710 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2711 CATCH_SET(oldcatch);
312caa8e
CS
2712 }
2713 else {
d78bda3d 2714 myop.op_other = (OP*)&myop;
3280af22 2715 PL_markstack_ptr--;
edb2152a 2716 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2717 PL_markstack_ptr++;
a0d0e21e 2718
14dd3ad8 2719 JMPENV_PUSH(ret);
edb2152a 2720
6224f72b
GS
2721 switch (ret) {
2722 case 0:
14dd3ad8 2723 redo_body:
d6f07c05 2724 CALL_BODY_SUB((OP*)&myop);
312caa8e 2725 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2726 if (!(flags & G_KEEPERR)) {
ab69dbc2 2727 CLEAR_ERRSV();
8433848b 2728 }
a0d0e21e 2729 break;
6224f72b 2730 case 1:
f86702cc 2731 STATUS_ALL_FAILURE;
a0d0e21e 2732 /* FALL THROUGH */
6224f72b 2733 case 2:
a0d0e21e 2734 /* my_exit() was called */
03d9f026 2735 SET_CURSTASH(PL_defstash);
a0d0e21e 2736 FREETMPS;
14dd3ad8 2737 JMPENV_POP;
f86702cc 2738 my_exit_jump();
118e2215 2739 assert(0); /* NOTREACHED */
6224f72b 2740 case 3:
3280af22 2741 if (PL_restartop) {
febb3a6d 2742 PL_restartjmpenv = NULL;
533c011a 2743 PL_op = PL_restartop;
3280af22 2744 PL_restartop = 0;
312caa8e 2745 goto redo_body;
a0d0e21e 2746 }
3280af22 2747 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2748 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2749 retval = 0;
2750 else {
2751 retval = 1;
3280af22 2752 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2753 }
312caa8e 2754 break;
a0d0e21e 2755 }
a0d0e21e 2756
edb2152a
NC
2757 if (PL_scopestack_ix > oldscope)
2758 delete_eval_scope();
14dd3ad8 2759 JMPENV_POP;
a0d0e21e 2760 }
1e422769 2761
a0d0e21e 2762 if (flags & G_DISCARD) {
3280af22 2763 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2764 retval = 0;
2765 FREETMPS;
2766 LEAVE;
2767 }
533c011a 2768 PL_op = oldop;
a0d0e21e
LW
2769 return retval;
2770}
2771
6e72f9df 2772/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2773
954c1994
GS
2774/*
2775=for apidoc p||eval_sv
2776
be064c4a
DM
2777Tells Perl to C<eval> the string in the SV. It supports the same flags
2778as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2779
2780=cut
2781*/
2782
a0d0e21e 2783I32
864dbfa3 2784Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2785
8ac85365 2786 /* See G_* flags in cop.h */
a0d0e21e 2787{
97aff369 2788 dVAR;
924508f0 2789 dSP;
a0d0e21e 2790 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2791 VOL I32 oldmark = SP - PL_stack_base;
2792 VOL I32 retval = 0;
6224f72b 2793 int ret;
c4420975 2794 OP* const oldop = PL_op;
db36c5a1 2795 dJMPENV;
84902520 2796
7918f24d
NC
2797 PERL_ARGS_ASSERT_EVAL_SV;
2798
4633a7c4
LW
2799 if (flags & G_DISCARD) {
2800 ENTER;
2801 SAVETMPS;
2802 }
2803
462e5cf6 2804 SAVEOP();
533c011a 2805 PL_op = (OP*)&myop;
5ff48db8 2806 Zero(&myop, 1, UNOP);
3280af22
NIS
2807 EXTEND(PL_stack_sp, 1);
2808 *++PL_stack_sp = sv;
79072805 2809
4633a7c4
LW
2810 if (!(flags & G_NOARGS))
2811 myop.op_flags = OPf_STACKED;
6e72f9df 2812 myop.op_type = OP_ENTEREVAL;
4f911530 2813 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2814 if (flags & G_KEEPERR)
2815 myop.op_flags |= OPf_SPECIAL;
d24ca0c5
DM
2816 if (PL_reg_state.re_reparsing)
2817 myop.op_private = OPpEVAL_COPHH;
4633a7c4 2818
dedbcade
DM
2819 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2820 * before a PUSHEVAL, which corrupts the stack after a croak */
2821 TAINT_PROPER("eval_sv()");
2822
14dd3ad8 2823 JMPENV_PUSH(ret);
6224f72b
GS
2824 switch (ret) {
2825 case 0:
14dd3ad8 2826 redo_body:
2ba65d5f
DM
2827 if (PL_op == (OP*)(&myop)) {
2828 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2829 if (!PL_op)
2830 goto fail; /* failed in compilation */
2831 }
4aca2f62 2832 CALLRUNOPS(aTHX);
312caa8e 2833 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2834 if (!(flags & G_KEEPERR)) {
ab69dbc2 2835 CLEAR_ERRSV();
8433848b 2836 }
4633a7c4 2837 break;
6224f72b 2838 case 1:
f86702cc 2839 STATUS_ALL_FAILURE;
4633a7c4 2840 /* FALL THROUGH */
6224f72b 2841 case 2:
4633a7c4 2842 /* my_exit() was called */
03d9f026 2843 SET_CURSTASH(PL_defstash);
4633a7c4 2844 FREETMPS;
14dd3ad8 2845 JMPENV_POP;
f86702cc 2846 my_exit_jump();
118e2215 2847 assert(0); /* NOTREACHED */
6224f72b 2848 case 3:
3280af22 2849 if (PL_restartop) {
febb3a6d 2850 PL_restartjmpenv = NULL;
533c011a 2851 PL_op = PL_restartop;
3280af22 2852 PL_restartop = 0;
312caa8e 2853 goto redo_body;
4633a7c4 2854 }
4aca2f62 2855 fail:
3280af22 2856 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2857 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2858 retval = 0;
2859 else {
2860 retval = 1;
3280af22 2861 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2862 }
312caa8e 2863 break;
4633a7c4
LW
2864 }
2865
14dd3ad8 2866 JMPENV_POP;
4633a7c4 2867 if (flags & G_DISCARD) {
3280af22 2868 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2869 retval = 0;
2870 FREETMPS;
2871 LEAVE;
2872 }
533c011a 2873 PL_op = oldop;
4633a7c4
LW
2874 return retval;
2875}
2876
954c1994
GS
2877/*
2878=for apidoc p||eval_pv
2879
2880Tells Perl to C<eval> the given string and return an SV* result.
2881
2882=cut
2883*/
2884
137443ea 2885SV*
864dbfa3 2886Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2887{
97aff369 2888 dVAR;
137443ea
PP
2889 SV* sv = newSVpv(p, 0);
2890
7918f24d
NC
2891 PERL_ARGS_ASSERT_EVAL_PV;
2892
864dbfa3 2893 eval_sv(sv, G_SCALAR);
137443ea
PP
2894 SvREFCNT_dec(sv);
2895
ed1786ad
DD
2896 {
2897 dSP;
2898 sv = POPs;
2899 PUTBACK;
2900 }
137443ea 2901
eed484f9
DD
2902 /* just check empty string or undef? */
2903 if (croak_on_error) {
2904 SV * const errsv = ERRSV;
2905 if(SvTRUE_NN(errsv))
2906 /* replace with croak_sv? */
2907 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2908 }
137443ea
PP
2909
2910 return sv;
2911}
2912
4633a7c4
LW
2913/* Require a module. */
2914
954c1994 2915/*
ccfc67b7
JH
2916=head1 Embedding Functions
2917
954c1994
GS
2918=for apidoc p||require_pv
2919
7d3fb230
BS
2920Tells Perl to C<require> the file named by the string argument. It is
2921analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2922implemented that way; consider using load_module instead.
954c1994 2923
7d3fb230 2924=cut */
954c1994 2925
4633a7c4 2926void
864dbfa3 2927Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2928{
97aff369 2929 dVAR;
d3acc0f7 2930 dSP;
97aff369 2931 SV* sv;
7918f24d
NC
2932
2933 PERL_ARGS_ASSERT_REQUIRE_PV;
2934
e788e7d3 2935 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2936 PUTBACK;
be41e5d9
NC
2937 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2938 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2939 SPAGAIN;
2940 POPSTACK;
79072805
LW
2941}
2942
76e3520e 2943STATIC void
b6f82619 2944S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2945{
ab821d7f 2946 /* This message really ought to be max 23 lines.
75c72d73 2947 * Removed -h because the user already knows that option. Others? */
fb73857a 2948
1566c39d
NC
2949 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2950 minimum of 509 character string literals. */
27da23d5 2951 static const char * const usage_msg[] = {
1566c39d
NC
2952" -0[octal] specify record separator (\\0, if no argument)\n"
2953" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2954" -C[number/list] enables the listed Unicode features\n"
2955" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2956" -d[:debugger] run program under debugger\n"
2957" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2958" -e program one line of program (several -e's allowed, omit programfile)\n"
2959" -E program like -e, but enables all optional features\n"
2960" -f don't do $sitelib/sitecustomize.pl at startup\n"
2961" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2962" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2963" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2964" -l[octal] enable line ending processing, specifies line terminator\n"
2965" -[mM][-]module execute \"use/no module...\" before executing program\n"
2966" -n assume \"while (<>) { ... }\" loop around program\n"
2967" -p assume loop like -n but print line also, like sed\n"
2968" -s enable rudimentary parsing for switches after programfile\n"
2969" -S look for programfile using PATH environment variable\n",
2970" -t enable tainting warnings\n"
2971" -T enable tainting checks\n"
2972" -u dump core after parsing program\n"
2973" -U allow unsafe operations\n"
2974" -v print version, patchlevel and license\n"
2975" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2976" -w enable many useful warnings\n"
1566c39d
NC
2977" -W enable all warnings\n"
2978" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2979" -X disable all warnings\n"
2980" \n"
2981"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2982NULL
2983};
27da23d5 2984 const char * const *p = usage_msg;
1566c39d 2985 PerlIO *out = PerlIO_stdout();
fb73857a 2986
1566c39d
NC
2987 PerlIO_printf(out,
2988 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2989 PL_origargv[0]);
fb73857a 2990 while (*p)
1566c39d 2991 PerlIO_puts(out, *p++);
b6f82619 2992 my_exit(0);
4633a7c4
LW
2993}
2994
b4ab917c
DM
2995/* convert a string of -D options (or digits) into an int.
2996 * sets *s to point to the char after the options */
2997
2998#ifdef DEBUGGING
2999int
e1ec3a88 3000Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3001{
27da23d5 3002 static const char * const usage_msgd[] = {
651b8f1a
NC
3003 " Debugging flag values: (see also -d)\n"
3004 " p Tokenizing and parsing (with v, displays parse stack)\n"
3005 " s Stack snapshots (with v, displays all stacks)\n"
3006 " l Context (loop) stack processing\n"
3007 " t Trace execution\n"
3008 " o Method and overloading resolution\n",
3009 " c String/numeric conversions\n"
3010 " P Print profiling info, source file input state\n"
3011 " m Memory and SV allocation\n"
3012 " f Format processing\n"
3013 " r Regular expression parsing and execution\n"
3014 " x Syntax tree dump\n",
3015 " u Tainting checks\n"
3016 " H Hash dump -- usurps values()\n"
3017 " X Scratchpad allocation\n"
3018 " D Cleaning up\n"
56967202 3019 " S Op slab allocation\n"
651b8f1a
NC
3020 " T Tokenising\n"
3021 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3022 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3023 " v Verbose: use in conjunction with other flags\n"
3024 " C Copy On Write\n"
3025 " A Consistency checks on internal structures\n"
3026 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3027 " M trace smart match resolution\n"
3028 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3029 NULL
3030 };
b4ab917c 3031 int i = 0;
7918f24d
NC
3032
3033 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3034
b4ab917c
DM
3035 if (isALPHA(**s)) {
3036 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3037 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
3038
3039 for (; isALNUM(**s); (*s)++) {
c4420975 3040 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3041 if (d)
3042 i |= 1 << (d - debopts);
3043 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3044 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3045 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3046 }
3047 }
e6e64d9b 3048 else if (isDIGIT(**s)) {
b4ab917c
DM
3049 i = atoi(*s);
3050 for (; isALNUM(**s); (*s)++) ;
3051 }
ddcf8bc1 3052 else if (givehelp) {
06e869a4 3053 const char *const *p = usage_msgd;
651b8f1a 3054 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3055 }
b4ab917c
DM
3056# ifdef EBCDIC
3057 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3058 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3059 "-Dp not implemented on this platform\n");
3060# endif
3061 return i;
3062}
3063#endif
3064
79072805
LW
3065/* This routine handles any switches that can be given during run */
3066
c7030b81
NC
3067const char *
3068Perl_moreswitches(pTHX_ const char *s)
79072805 3069{
27da23d5 3070 dVAR;
84c133a0 3071 UV rschar;
0544e6df 3072 const char option = *s; /* used to remember option in -m/-M code */
79072805 3073
7918f24d
NC
3074 PERL_ARGS_ASSERT_MORESWITCHES;
3075
79072805
LW
3076 switch (*s) {
3077 case '0':
a863c7d1 3078 {
f2095865 3079 I32 flags = 0;
a3b680e6 3080 STRLEN numlen;
f2095865
JH
3081
3082 SvREFCNT_dec(PL_rs);
3083 if (s[1] == 'x' && s[2]) {
a3b680e6 3084 const char *e = s+=2;
f2095865
JH
3085 U8 *tmps;
3086
a3b680e6
AL
3087 while (*e)
3088 e++;
f2095865
JH
3089 numlen = e - s;
3090 flags = PERL_SCAN_SILENT_ILLDIGIT;
3091 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3092 if (s + numlen < e) {
3093 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3094 numlen = 0;
3095 s--;
3096 }
396482e1 3097 PL_rs = newSVpvs("");
c5661c80 3098 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3099 tmps = (U8*)SvPVX(PL_rs);
3100 uvchr_to_utf8(tmps, rschar);
3101 SvCUR_set(PL_rs, UNISKIP(rschar));
3102 SvUTF8_on(PL_rs);
3103 }
3104 else {
3105 numlen = 4;
3106 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3107 if (rschar & ~((U8)~0))
3108 PL_rs = &PL_sv_undef;
3109 else if (!rschar && numlen >= 2)
396482e1 3110 PL_rs = newSVpvs("");
f2095865
JH
3111 else {
3112 char ch = (char)rschar;
3113 PL_rs = newSVpvn(&ch, 1);
3114 }
3115 }
64ace3f8 3116 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3117 return s + numlen;
a863c7d1 3118 }
46487f74 3119 case 'C':
a05d7ebb 3120 s++;
dd374669 3121 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3122 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3123 PL_utf8cache = -1;
46487f74 3124 return s;
2304df62 3125 case 'F':
3280af22 3126 PL_minus_F = TRUE;
ebce5377
RGS
3127 PL_splitstr = ++s;
3128 while (*s && !isSPACE(*s)) ++s;
e49e380e 3129 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3130 return s;
79072805 3131 case 'a':
3280af22 3132 PL_minus_a = TRUE;
79072805
LW
3133 s++;
3134 return s;
3135 case 'c':
3280af22 3136 PL_minus_c = TRUE;
79072805
LW
3137 s++;
3138 return s;
3139 case 'd':
f20b2998 3140 forbid_setid('d', FALSE);
4633a7c4 3141 s++;
2cbb2ee1
RGS
3142
3143 /* -dt indicates to the debugger that threads will be used */
3144 if (*s == 't' && !isALNUM(s[1])) {
3145 ++s;
3146 my_setenv("PERL5DB_THREADED", "1");
3147 }
3148
70c94a19
RR
3149 /* The following permits -d:Mod to accepts arguments following an =
3150 in the fashion that -MSome::Mod does. */
3151 if (*s == ':' || *s == '=') {
b19934fb
NC
3152 const char *start;
3153 const char *end;
3154 SV *sv;
3155
3156 if (*++s == '-') {
3157 ++s;
3158 sv = newSVpvs("no Devel::");
3159 } else {
3160 sv = newSVpvs("use Devel::");
3161 }
3162
3163 start = s;
3164 end = s + strlen(s);
f85893a1 3165
b19934fb 3166 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3167 while(isALNUM(*s) || *s==':') ++s;
3168 if (*s != '=')
f85893a1 3169 sv_catpvn(sv, start, end - start);
70c94a19
RR
3170 else {
3171 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3172 /* Don't use NUL as q// delimiter here, this string goes in the
3173 * environment. */
3174 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3175 }
f85893a1 3176 s = end;
184f32ec 3177 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3178 SvREFCNT_dec(sv);
4633a7c4 3179 }
ed094faf 3180 if (!PL_perldb) {
3280af22 3181 PL_perldb = PERLDB_ALL;
a0d0e21e 3182 init_debugger();
ed094faf 3183 }
79072805
LW
3184 return s;
3185 case 'D':
0453d815 3186 {
79072805 3187#ifdef DEBUGGING
f20b2998 3188 forbid_setid('D', FALSE);
b4ab917c 3189 s++;
dd374669 3190 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3191#else /* !DEBUGGING */
0453d815 3192 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3193 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3194 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3195 for (s++; isALNUM(*s); s++) ;
79072805 3196#endif
79072805 3197 return s;
0453d815 3198 }
4633a7c4 3199 case 'h':
b6f82619 3200 usage();
79072805 3201 case 'i':
43c5f42d 3202 Safefree(PL_inplace);
c030f24b
GH
3203#if defined(__CYGWIN__) /* do backup extension automagically */
3204 if (*(s+1) == '\0') {
c86a4f2e 3205 PL_inplace = savepvs(".bak");
c030f24b
GH
3206 return s+1;
3207 }
3208#endif /* __CYGWIN__ */
5ef5d758 3209 {
d4c19fe8 3210 const char * const start = ++s;
5ef5d758
NC
3211 while (*s && !isSPACE(*s))
3212 ++s;
3213
3214 PL_inplace = savepvn(start, s - start);
3215 }
7b8d334a 3216 if (*s) {
5ef5d758 3217 ++s;
7b8d334a 3218 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3219 s++;
7b8d334a 3220 }
fb73857a 3221 return s;
4e49a025 3222 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3223 forbid_setid('I', FALSE);
fb73857a
PP
3224 ++s;
3225 while (*s && isSPACE(*s))
3226 ++s;
3227 if (*s) {
c7030b81 3228 const char *e, *p;
0df16ed7
GS
3229 p = s;
3230 /* ignore trailing spaces (possibly followed by other switches) */
3231 do {
3232 for (e = p; *e && !isSPACE(*e); e++) ;
3233 p = e;
3234 while (isSPACE(*p))
3235 p++;
3236 } while (*p && *p != '-');
55b4bc1c 3237 incpush(s, e-s,
e28f3139 3238 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3239 s = p;
3240 if (*s == '-')
3241 s++;
79072805
LW
3242 }
3243 else
a67e862a 3244 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3245 return s;
79072805 3246 case 'l':
3280af22 3247 PL_minus_l = TRUE;
79072805 3248 s++;
7889fe52
NIS
3249 if (PL_ors_sv) {
3250 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3251 PL_ors_sv = NULL;
7889fe52 3252 }
79072805 3253 if (isDIGIT(*s)) {
53305cf1 3254 I32 flags = 0;
a3b680e6 3255 STRLEN numlen;
396482e1 3256 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3257 numlen = 3 + (*s == '0');
3258 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3259 s += numlen;
3260 }
3261 else {
8bfdd7d9 3262 if (RsPARA(PL_rs)) {
396482e1 3263 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3264 }
3265 else {
8bfdd7d9 3266 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3267 }
79072805
LW
3268 }
3269 return s;
1a30305b 3270 case 'M':
f20b2998 3271 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3272 /* FALL THROUGH */
3273 case 'm':
f20b2998 3274 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3275 if (*++s) {
c7030b81 3276 const char *start;
b64cb68c 3277 const char *end;
11343788 3278 SV *sv;
e1ec3a88 3279 const char *use = "use ";
0544e6df 3280 bool colon = FALSE;
a5f75d66 3281 /* -M-foo == 'no foo' */
d0043bd1
NC
3282 /* Leading space on " no " is deliberate, to make both
3283 possibilities the same length. */
3284 if (*s == '-') { use = " no "; ++s; }
3285 sv = newSVpvn(use,4);
a5f75d66 3286 start = s;
1a30305b 3287 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3288 while(isALNUM(*s) || *s==':') {
3289 if( *s++ == ':' ) {
3290 if( *s == ':' )
3291 s++;
3292 else
3293 colon = TRUE;
3294 }
3295 }
3296 if (s == start)
3297 Perl_croak(aTHX_ "Module name required with -%c option",
3298 option);
3299 if (colon)
3300 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3301 "contains single ':'",
63da6837 3302 (int)(s - start), start, option);
b64cb68c 3303 end = s + strlen(s);
c07a80fd 3304 if (*s != '=') {
b64cb68c 3305 sv_catpvn(sv, start, end - start);
0544e6df 3306 if (option == 'm') {
c07a80fd 3307 if (*s != '\0')
cea2e8a9 3308 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3309 sv_catpvs( sv, " ()");
c07a80fd
PP
3310 }
3311 } else {
11343788 3312 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3313 /* Use NUL as q''-delimiter. */
3314 sv_catpvs(sv, " split(/,/,q\0");
3315 ++s;
3316 sv_catpvn(sv, s, end - s);
396482e1 3317 sv_catpvs(sv, "\0)");
c07a80fd 3318 }
b64cb68c 3319 s = end;
29a861e7 3320 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3321 }
3322 else
0544e6df 3323 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3324 return s;
79072805 3325 case 'n':
3280af22 3326 PL_minus_n = TRUE;
79072805
LW
3327 s++;
3328 return s;
3329 case 'p':
3280af22 3330 PL_minus_p = TRUE;
79072805
LW
3331 s++;
3332 return s;
3333 case 's':
f20b2998 3334 forbid_setid('s', FALSE);
3280af22 3335 PL_doswitches = TRUE;
79072805
LW
3336 s++;
3337 return s;
6537fe72 3338 case 't':
27a6968b 3339 case 'T':
284167a5
SM
3340#if SILENT_NO_TAINT_SUPPORT
3341 /* silently ignore */
3342#elif NO_TAINT_SUPPORT
3343 Perl_croak("This perl was compiled without taint support. "
3344 "Cowardly refusing to run with -t or -T flags");
3345#else
3346 if (!TAINTING_get)
27a6968b 3347 TOO_LATE_FOR(*s);
284167a5 3348#endif
6537fe72 3349 s++;
463ee0b2 3350 return s;
79072805 3351 case 'u':
3280af22 3352 PL_do_undump = TRUE;
79072805
LW
3353 s++;
3354 return s;
3355 case 'U':
3280af22 3356 PL_unsafe = TRUE;
79072805
LW
3357 s++;
3358 return s;
3359 case 'v':
c4bc78d9
NC
3360 minus_v();
3361 case 'w':
3362 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3363 PL_dowarn |= G_WARN_ON;
3364 }
3365 s++;
3366 return s;
3367 case 'W':
3368 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3369 if (!specialWARN(PL_compiling.cop_warnings))
3370 PerlMemShared_free(PL_compiling.cop_warnings);
3371 PL_compiling.cop_warnings = pWARN_ALL ;
3372 s++;
3373 return s;
3374 case 'X':
3375 PL_dowarn = G_WARN_ALL_OFF;
3376 if (!specialWARN(PL_compiling.cop_warnings))
3377 PerlMemShared_free(PL_compiling.cop_warnings);
3378 PL_compiling.cop_warnings = pWARN_NONE ;
3379 s++;
3380 return s;
3381 case '*':
3382 case ' ':
3383 while( *s == ' ' )
3384 ++s;
3385 if (s[0] == '-') /* Additional switches on #! line. */
3386 return s+1;
3387 break;
3388 case '-':
3389 case 0:
3390#if defined(WIN32) || !defined(PERL_STRICT_CR)
3391 case '\r':
3392#endif
3393 case '\n':
3394 case '\t':
3395 break;
3396#ifdef ALTERNATE_SHEBANG
3397 case 'S': /* OS/2 needs -S on "extproc" line. */
3398 break;
3399#endif
4bb78d63
CB
3400 case 'e': case 'f': case 'x': case 'E':
3401#ifndef ALTERNATE_SHEBANG
3402 case 'S':
3403#endif
3404 case 'V':
c4bc78d9 3405 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3406 default:
3407 Perl_croak(aTHX_
3408 "Unrecognized switch: -%.1s (-h will show valid options)",s
3409 );
c4bc78d9
NC
3410 }
3411 return NULL;
3412}
3413
3414
3415STATIC void
3416S_minus_v(pTHX)
3417{
fc3381af 3418 PerlIO * PIO_stdout;
d7aa5382 3419 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3420 upg_version(PL_patchlevel, TRUE);
8e9464f1 3421#if !defined(DGUX)
46807d8e
YO
3422 {
3423 SV* level= vstringify(PL_patchlevel);
3424#ifdef PERL_PATCHNUM
23d483e2
NC
3425# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3426 SV *num = newSVpvs(PERL_PATCHNUM "*");
3427# else
3428 SV *num = newSVpvs(PERL_PATCHNUM);
3429# endif
fc3381af
DD
3430 {
3431 STRLEN level_len, num_len;
3432 char * level_str, * num_str;
3433 num_str = SvPV(num, num_len);
3434 level_str = SvPV(level, level_len);
3435 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3436 SvREFCNT_dec(level);
3437 level= num;
3438 } else {
3439 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3440 SvREFCNT_dec(num);
3441 }
46807d8e
YO
3442 }
3443 #endif
fc3381af
DD
3444 PIO_stdout = PerlIO_stdout();
3445 PerlIO_printf(PIO_stdout,
ded326e4
DG
3446 "\nThis is perl " STRINGIFY(PERL_REVISION)
3447 ", version " STRINGIFY(PERL_VERSION)
3448 ", subversion " STRINGIFY(PERL_SUBVERSION)
3449 " (%"SVf") built for " ARCHNAME, level
3450 );
46807d8e
YO
3451 SvREFCNT_dec(level);
3452 }
8e9464f1 3453#else /* DGUX */
fc3381af 3454 PIO_stdout = PerlIO_stdout();
8e9464f1 3455/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
fc3381af 3456 PerlIO_printf(PIO_stdout,
52ea0aec 3457 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3458 SVfARG(vstringify(PL_patchlevel))));
fc3381af 3459 PerlIO_printf(PIO_stdout,
8e9464f1
JH
3460 Perl_form(aTHX_ " built under %s at %s %s\n",
3461 OSNAME, __DATE__, __TIME__));
fc3381af 3462 PerlIO_printf(PIO_stdout,
8e9464f1 3463 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3464 OSVERS));
8e9464f1 3465#endif /* !DGUX */
fb73857a
PP
3466#if defined(LOCAL_PATCH_COUNT)
3467 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3468 PerlIO_printf(PIO_stdout,
b0e47665
GS
3469 "\n(with %d registered patch%s, "
3470 "see perl -V for more detail)",
bb7a0f54 3471 LOCAL_PATCH_COUNT,
b0e47665 3472 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3473#endif
1a30305b 3474
fc3381af 3475 PerlIO_printf(PIO_stdout,
fdfb76e4 3476 "\n\nCopyright 1987-2012, Larry Wall\n");
79072805 3477#ifdef MSDOS
fc3381af 3478 PerlIO_printf(PIO_stdout,
b0e47665 3479 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3480#endif
3481#ifdef DJGPP
fc3381af 3482 PerlIO_printf(PIO_stdout,
b0e47665
GS
3483 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3484 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3485#endif
79072805 3486#ifdef OS2
fc3381af 3487 PerlIO_printf(PIO_stdout,
b0e47665 3488 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3489 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3490#endif
9d116dd7 3491#ifdef OEMVS
fc3381af 3492 PerlIO_printf(PIO_stdout,
b0e47665 3493 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3494#endif
495c5fdc 3495#ifdef __VOS__
fc3381af 3496 PerlIO_printf(PIO_stdout,
94efb9fb 3497 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3498#endif
a1a0e61e 3499#ifdef POSIX_BC
fc3381af 3500 PerlIO_printf(PIO_stdout,
b0e47665 3501 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3502#endif
e1caacb4 3503#ifdef UNDER_CE
fc3381af
DD
3504 PerlIO_printf(PIO_stdout,
3505 "WINCE port by Rainer Keuchel, 2001-2002\n"
3506 "Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3507 wce_hitreturn();
3508#endif
a0fd4948 3509#ifdef __SYMBIAN32__
fc3381af 3510 PerlIO_printf(PIO_stdout,
27da23d5
JH
3511 "Symbian port by Nokia, 2004-2005\n");
3512#endif
baed7233
DL
3513#ifdef BINARY_BUILD_NOTICE
3514 BINARY_BUILD_NOTICE;
3515#endif
fc3381af 3516 PerlIO_printf(PIO_stdout,
b0e47665 3517 "\n\
79072805 3518Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3519GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3520Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3521this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\