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sv.c:S_curse: move assertions to make them useful
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
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#ifdef __BEOS__
62# define HZ 1000000
63#endif
64
65#ifndef HZ
66# ifdef CLK_TCK
67# define HZ CLK_TCK
68# else
69# define HZ 60
70# endif
71#endif
72
7114a2d2 73#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 74char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
75#endif
76
acfe0abc 77static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 78
cc69b689 79#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 80# define validate_suid(rsfp) NOOP
cc69b689 81#else
b24bc095 82# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 83#endif
8d063cd8 84
d6f07c05
AL
85#define CALL_BODY_SUB(myop) \
86 if (PL_op == (myop)) \
139d0ce6 87 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
88 if (PL_op) \
89 CALLRUNOPS(aTHX);
90
91#define CALL_LIST_BODY(cv) \
92 PUSHMARK(PL_stack_sp); \
9a8aa25b 93 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 94
e6827a76 95static void
daa7d858 96S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 97{
27da23d5 98 dVAR;
e6827a76
NC
99 if (!PL_curinterp) {
100 PERL_SET_INTERP(my_perl);
3db8f154 101#if defined(USE_ITHREADS)
e6827a76
NC
102 INIT_THREADS;
103 ALLOC_THREAD_KEY;
104 PERL_SET_THX(my_perl);
105 OP_REFCNT_INIT;
e8570548 106 OP_CHECK_MUTEX_INIT;
71ad1b0c 107 HINTS_REFCNT_INIT;
e6827a76 108 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
109 MUTEX_INIT(&PL_my_ctx_mutex);
110# endif
e6827a76 111 }
c0bce9aa
NC
112#if defined(USE_ITHREADS)
113 else
114#else
115 /* This always happens for non-ithreads */
116#endif
117 {
e6827a76
NC
118 PERL_SET_THX(my_perl);
119 }
120}
06d86050 121
cbec8ebe
DM
122
123/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
124
125void
126Perl_sys_init(int* argc, char*** argv)
127{
4fc0badb 128 dVAR;
7918f24d
NC
129
130 PERL_ARGS_ASSERT_SYS_INIT;
131
cbec8ebe
DM
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_SYS_INIT_BODY(argc, argv);
135}
136
137void
138Perl_sys_init3(int* argc, char*** argv, char*** env)
139{
4fc0badb 140 dVAR;
7918f24d
NC
141
142 PERL_ARGS_ASSERT_SYS_INIT3;
143
cbec8ebe
DM
144 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
145 PERL_UNUSED_ARG(argv);
146 PERL_UNUSED_ARG(env);
147 PERL_SYS_INIT3_BODY(argc, argv, env);
148}
149
150void
d0820ef1 151Perl_sys_term()
cbec8ebe 152{
4fc0badb 153 dVAR;
bf81751b
DM
154 if (!PL_veto_cleanup) {
155 PERL_SYS_TERM_BODY();
156 }
cbec8ebe
DM
157}
158
159
32e30700
GS
160#ifdef PERL_IMPLICIT_SYS
161PerlInterpreter *
7766f137
GS
162perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
163 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
164 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
165 struct IPerlDir* ipD, struct IPerlSock* ipS,
166 struct IPerlProc* ipP)
167{
168 PerlInterpreter *my_perl;
7918f24d
NC
169
170 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
171
9f653bb5 172 /* Newx() needs interpreter, so call malloc() instead */
32e30700 173 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 174 S_init_tls_and_interp(my_perl);
32e30700
GS
175 Zero(my_perl, 1, PerlInterpreter);
176 PL_Mem = ipM;
7766f137
GS
177 PL_MemShared = ipMS;
178 PL_MemParse = ipMP;
32e30700
GS
179 PL_Env = ipE;
180 PL_StdIO = ipStd;
181 PL_LIO = ipLIO;
182 PL_Dir = ipD;
183 PL_Sock = ipS;
184 PL_Proc = ipP;
7cb608b5 185 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 186
32e30700
GS
187 return my_perl;
188}
189#else
954c1994
GS
190
191/*
ccfc67b7
JH
192=head1 Embedding Functions
193
954c1994
GS
194=for apidoc perl_alloc
195
196Allocates a new Perl interpreter. See L<perlembed>.
197
198=cut
199*/
200
93a17b20 201PerlInterpreter *
cea2e8a9 202perl_alloc(void)
79072805 203{
cea2e8a9 204 PerlInterpreter *my_perl;
79072805 205
9f653bb5 206 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 207 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 208
e6827a76 209 S_init_tls_and_interp(my_perl);
7cb608b5 210#ifndef PERL_TRACK_MEMPOOL
07409e01 211 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
212#else
213 Zero(my_perl, 1, PerlInterpreter);
214 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
215 return my_perl;
216#endif
79072805 217}
32e30700 218#endif /* PERL_IMPLICIT_SYS */
79072805 219
954c1994
GS
220/*
221=for apidoc perl_construct
222
223Initializes a new Perl interpreter. See L<perlembed>.
224
225=cut
226*/
227
79072805 228void
0cb96387 229perl_construct(pTHXx)
79072805 230{
27da23d5 231 dVAR;
7918f24d
NC
232
233 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
234
8990e307 235#ifdef MULTIPLICITY
54aff467 236 init_interp();
ac27b0f5 237 PL_perl_destruct_level = 1;
54aff467 238#else
7918f24d 239 PERL_UNUSED_ARG(my_perl);
54aff467
GS
240 if (PL_perl_destruct_level > 0)
241 init_interp();
242#endif
34caed6d
DM
243 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
244
0d96b528 245 init_constants();
34caed6d
DM
246
247 SvREADONLY_on(&PL_sv_placeholder);
248 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
249
250 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 251#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 252 PL_pidstatus = newHV();
ca0c25f6 253#endif
79072805 254
396482e1 255 PL_rs = newSVpvs("\n");
dc92893f 256
cea2e8a9 257 init_stacks();
79072805 258
748a9306 259 init_ids();
a5f75d66 260
312caa8e 261 JMPENV_BOOTSTRAP;
f86702cc
PP
262 STATUS_ALL_SUCCESS;
263
0672f40e 264 init_i18nl10n(1);
36477c24 265 SET_NUMERIC_STANDARD();
0b5b802d 266
ab821d7f 267#if defined(LOCAL_PATCH_COUNT)
3280af22 268 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
269#endif
270
52853b95
GS
271#ifdef HAVE_INTERP_INTERN
272 sys_intern_init();
273#endif
274
3a1ee7e8 275 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 276
3280af22
NIS
277 PL_fdpid = newAV(); /* for remembering popen pids by fd */
278 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 279 PL_errors = newSVpvs("");
76f68e9b
MHM
280 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
281 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
282 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 283#ifdef USE_ITHREADS
402d2eb1
NC
284 /* First entry is a list of empty elements. It needs to be initialised
285 else all hell breaks loose in S_find_uninit_var(). */
286 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 287 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 288 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 289#endif
e5dd39fc 290#ifdef USE_REENTRANT_API
59bd0823 291 Perl_reentrant_init(aTHX);
e5dd39fc 292#endif
7dc86639
YO
293#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
294 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
295 * This MUST be done before any hash stores or fetches take place.
296 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
297 * yourself, it is your responsibility to provide a good random seed!
298 * You can also define PERL_HASH_SEED in compile time, see hv.h.
299 *
300 * XXX: fix this comment */
301 if (PL_hash_seed_set == FALSE) {
302 Perl_get_hash_seed(aTHX_ PL_hash_seed);
303 PL_hash_seed_set= TRUE;
304 }
305#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
306
307 /* Note that strtab is a rather special HV. Assumptions are made
308 about not iterating on it, and not adding tie magic to it.
309 It is properly deallocated in perl_destruct() */
310 PL_strtab = newHV();
311
3d47000e
AB
312 HvSHAREKEYS_off(PL_strtab); /* mandatory */
313 hv_ksplit(PL_strtab, 512);
314
0631ea03
AB
315#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
316 _dyld_lookup_and_bind
317 ("__environ", (unsigned long *) &environ_pointer, NULL);
318#endif /* environ */
319
2f42fcb0
JH
320#ifndef PERL_MICRO
321# ifdef USE_ENVIRON_ARRAY
0631ea03 322 PL_origenviron = environ;
2f42fcb0 323# endif
0631ea03
AB
324#endif
325
5311654c 326 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 327 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
328 * BeOS has those, but returns the wrong value.
329 * The HZ if not originally defined has been by now
330 * been defined as CLK_TCK, if available. */
dbc1d986 331#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
332 PL_clocktick = sysconf(_SC_CLK_TCK);
333 if (PL_clocktick <= 0)
334#endif
335 PL_clocktick = HZ;
336
081fc587
AB
337 PL_stashcache = newHV();
338
e8e3635e 339 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 340 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 341
27da23d5
JH
342#ifdef HAS_MMAP
343 if (!PL_mmap_page_size) {
344#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
345 {
346 SETERRNO(0, SS_NORMAL);
347# ifdef _SC_PAGESIZE
348 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
349# else
350 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
351# endif
352 if ((long) PL_mmap_page_size < 0) {
353 if (errno) {
44f8325f 354 SV * const error = ERRSV;
d4c19fe8 355 SvUPGRADE(error, SVt_PV);
0510663f 356 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
357 }
358 else
359 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
360 }
361 }
362#else
363# ifdef HAS_GETPAGESIZE
364 PL_mmap_page_size = getpagesize();
365# else
366# if defined(I_SYS_PARAM) && defined(PAGESIZE)
367 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
368# endif
369# endif
370#endif
371 if (PL_mmap_page_size <= 0)
372 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
373 (IV) PL_mmap_page_size);
374 }
375#endif /* HAS_MMAP */
376
377#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
378 PL_timesbase.tms_utime = 0;
379 PL_timesbase.tms_stime = 0;
380 PL_timesbase.tms_cutime = 0;
381 PL_timesbase.tms_cstime = 0;
382#endif
383
7d113631
NC
384 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
385
a3e6e81e 386 PL_registered_mros = newHV();
9e169432
NC
387 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
388 HvMAX(PL_registered_mros) = 0;
a3e6e81e 389
8990e307 390 ENTER;
79072805
LW
391}
392
954c1994 393/*
62375a60
NIS
394=for apidoc nothreadhook
395
396Stub that provides thread hook for perl_destruct when there are
397no threads.
398
399=cut
400*/
401
402int
4e9e3734 403Perl_nothreadhook(pTHX)
62375a60 404{
96a5add6 405 PERL_UNUSED_CONTEXT;
62375a60
NIS
406 return 0;
407}
408
41e4abd8
NC
409#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
410void
411Perl_dump_sv_child(pTHX_ SV *sv)
412{
413 ssize_t got;
bf357333
NC
414 const int sock = PL_dumper_fd;
415 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
416 union control_un control;
417 struct msghdr msg;
808ad2d0 418 struct iovec vec[2];
bf357333 419 struct cmsghdr *cmptr;
808ad2d0
NC
420 int returned_errno;
421 unsigned char buffer[256];
41e4abd8 422
7918f24d
NC
423 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
424
bf357333 425 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
426 return;
427
428 PerlIO_flush(Perl_debug_log);
429
bf357333
NC
430 /* All these shenanigans are to pass a file descriptor over to our child for
431 it to dump out to. We can't let it hold open the file descriptor when it
432 forks, as the file descriptor it will dump to can turn out to be one end
433 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 434 be open, the wait would be forever.) */
bf357333
NC
435
436 msg.msg_control = control.control;
437 msg.msg_controllen = sizeof(control.control);
438 /* We're a connected socket so we don't need a destination */
439 msg.msg_name = NULL;
440 msg.msg_namelen = 0;
441 msg.msg_iov = vec;
808ad2d0 442 msg.msg_iovlen = 1;
bf357333
NC
443
444 cmptr = CMSG_FIRSTHDR(&msg);
445 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
446 cmptr->cmsg_level = SOL_SOCKET;
447 cmptr->cmsg_type = SCM_RIGHTS;
448 *((int *)CMSG_DATA(cmptr)) = 1;
449
450 vec[0].iov_base = (void*)&sv;
451 vec[0].iov_len = sizeof(sv);
452 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
453
454 if(got < 0) {
bf357333 455 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
456 abort();
457 }
bf357333
NC
458 if(got < sizeof(sv)) {
459 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
460 abort();
461 }
462
808ad2d0
NC
463 /* Return protocol is
464 int: errno value
465 unsigned char: length of location string (0 for empty)
466 unsigned char*: string (not terminated)
467 */
468 vec[0].iov_base = (void*)&returned_errno;
469 vec[0].iov_len = sizeof(returned_errno);
470 vec[1].iov_base = buffer;
471 vec[1].iov_len = 1;
472
473 got = readv(sock, vec, 2);
41e4abd8
NC
474
475 if(got < 0) {
476 perror("Debug leaking scalars parent read failed");
808ad2d0 477 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
478 abort();
479 }
808ad2d0 480 if(got < sizeof(returned_errno) + 1) {
41e4abd8 481 perror("Debug leaking scalars parent short read");
808ad2d0 482 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
483 abort();
484 }
485
808ad2d0
NC
486 if (*buffer) {
487 got = read(sock, buffer + 1, *buffer);
488 if(got < 0) {
489 perror("Debug leaking scalars parent read 2 failed");
490 PerlIO_flush(PerlIO_stderr());
491 abort();
492 }
493
494 if(got < *buffer) {
495 perror("Debug leaking scalars parent short read 2");
496 PerlIO_flush(PerlIO_stderr());
497 abort();
498 }
499 }
500
501 if (returned_errno || *buffer) {
502 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
503 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
504 returned_errno, strerror(returned_errno));
41e4abd8
NC
505 }
506}
507#endif
508
62375a60 509/*
954c1994
GS
510=for apidoc perl_destruct
511
512Shuts down a Perl interpreter. See L<perlembed>.
513
514=cut
515*/
516
31d77e54 517int
0cb96387 518perl_destruct(pTHXx)
79072805 519{
27da23d5 520 dVAR;
be2ea8ed 521 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 522 HV *hv;
2aa47728 523#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
524 pid_t child;
525#endif
8990e307 526
7918f24d
NC
527 PERL_ARGS_ASSERT_PERL_DESTRUCT;
528#ifndef MULTIPLICITY
ed6c66dd 529 PERL_UNUSED_ARG(my_perl);
7918f24d 530#endif
9d4ba2ae 531
3d22c4f0
GG
532 assert(PL_scopestack_ix == 1);
533
7766f137
GS
534 /* wait for all pseudo-forked children to finish */
535 PERL_WAIT_FOR_CHILDREN;
536
3280af22 537 destruct_level = PL_perl_destruct_level;
36e77d41 538#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 539 {
9d4ba2ae
AL
540 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
541 if (s) {
36e77d41
DD
542 const int i = atoi(s);
543#ifdef DEBUGGING
544 if (destruct_level < i) destruct_level = i;
545#endif
546#ifdef PERL_TRACK_MEMPOOL
547 /* RT #114496, for perl_free */
548 PL_perl_destruct_level = i;
549#endif
5f05dabc 550 }
4633a7c4
LW
551 }
552#endif
553
27da23d5 554 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
555 dJMPENV;
556 int x = 0;
557
558 JMPENV_PUSH(x);
1b6737cc 559 PERL_UNUSED_VAR(x);
9ebf26ad 560 if (PL_endav && !PL_minus_c) {
ca7b837b 561 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 562 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 563 }
f3faeb53 564 JMPENV_POP;
26f423df 565 }
f3faeb53 566 LEAVE;
a0d0e21e 567 FREETMPS;
3d22c4f0 568 assert(PL_scopestack_ix == 0);
a0d0e21e 569
e00b64d4 570 /* Need to flush since END blocks can produce output */
f13a2bc0 571 my_fflush_all();
e00b64d4 572
16c91539 573 if (PL_threadhook(aTHX)) {
62375a60 574 /* Threads hook has vetoed further cleanup */
c301d606 575 PL_veto_cleanup = TRUE;
37038d91 576 return STATUS_EXIT;
62375a60
NIS
577 }
578
2aa47728
NC
579#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
580 if (destruct_level != 0) {
581 /* Fork here to create a child. Our child's job is to preserve the
582 state of scalars prior to destruction, so that we can instruct it
583 to dump any scalars that we later find have leaked.
584 There's no subtlety in this code - it assumes POSIX, and it doesn't
585 fail gracefully */
586 int fd[2];
587
588 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
589 perror("Debug leaking scalars socketpair failed");
590 abort();
591 }
592
593 child = fork();
594 if(child == -1) {
595 perror("Debug leaking scalars fork failed");
596 abort();
597 }
598 if (!child) {
599 /* We are the child */
3125a5a4
NC
600 const int sock = fd[1];
601 const int debug_fd = PerlIO_fileno(Perl_debug_log);
602 int f;
808ad2d0
NC
603 const char *where;
604 /* Our success message is an integer 0, and a char 0 */
b61433a9 605 static const char success[sizeof(int) + 1] = {0};
3125a5a4 606
2aa47728 607 close(fd[0]);
2aa47728 608
3125a5a4
NC
609 /* We need to close all other file descriptors otherwise we end up
610 with interesting hangs, where the parent closes its end of a
611 pipe, and sits waiting for (another) child to terminate. Only
612 that child never terminates, because it never gets EOF, because
bf357333
NC
613 we also have the far end of the pipe open. We even need to
614 close the debugging fd, because sometimes it happens to be one
615 end of a pipe, and a process is waiting on the other end for
616 EOF. Normally it would be closed at some point earlier in
617 destruction, but if we happen to cause the pipe to remain open,
618 EOF never occurs, and we get an infinite hang. Hence all the
619 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
620
621 f = sysconf(_SC_OPEN_MAX);
622 if(f < 0) {
808ad2d0
NC
623 where = "sysconf failed";
624 goto abort;
3125a5a4
NC
625 }
626 while (f--) {
627 if (f == sock)
628 continue;
3125a5a4
NC
629 close(f);
630 }
631
2aa47728
NC
632 while (1) {
633 SV *target;
bf357333
NC
634 union control_un control;
635 struct msghdr msg;
636 struct iovec vec[1];
637 struct cmsghdr *cmptr;
638 ssize_t got;
639 int got_fd;
640
641 msg.msg_control = control.control;
642 msg.msg_controllen = sizeof(control.control);
643 /* We're a connected socket so we don't need a source */
644 msg.msg_name = NULL;
645 msg.msg_namelen = 0;
646 msg.msg_iov = vec;
647 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
648
649 vec[0].iov_base = (void*)&target;
650 vec[0].iov_len = sizeof(target);
651
652 got = recvmsg(sock, &msg, 0);
2aa47728
NC
653
654 if(got == 0)
655 break;
656 if(got < 0) {
808ad2d0
NC
657 where = "recv failed";
658 goto abort;
2aa47728
NC
659 }
660 if(got < sizeof(target)) {
808ad2d0
NC
661 where = "short recv";
662 goto abort;
2aa47728 663 }
bf357333 664
808ad2d0
NC
665 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
666 where = "no cmsg";
667 goto abort;
668 }
669 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
670 where = "wrong cmsg_len";
671 goto abort;
672 }
673 if(cmptr->cmsg_level != SOL_SOCKET) {
674 where = "wrong cmsg_level";
675 goto abort;
676 }
677 if(cmptr->cmsg_type != SCM_RIGHTS) {
678 where = "wrong cmsg_type";
679 goto abort;
680 }
bf357333
NC
681
682 got_fd = *(int*)CMSG_DATA(cmptr);
683 /* For our last little bit of trickery, put the file descriptor
684 back into Perl_debug_log, as if we never actually closed it
685 */
808ad2d0
NC
686 if(got_fd != debug_fd) {
687 if (dup2(got_fd, debug_fd) == -1) {
688 where = "dup2";
689 goto abort;
690 }
691 }
2aa47728 692 sv_dump(target);
bf357333 693
2aa47728
NC
694 PerlIO_flush(Perl_debug_log);
695
808ad2d0 696 got = write(sock, &success, sizeof(success));
2aa47728
NC
697
698 if(got < 0) {
808ad2d0
NC
699 where = "write failed";
700 goto abort;
2aa47728 701 }
808ad2d0
NC
702 if(got < sizeof(success)) {
703 where = "short write";
704 goto abort;
2aa47728
NC
705 }
706 }
707 _exit(0);
808ad2d0
NC
708 abort:
709 {
710 int send_errno = errno;
711 unsigned char length = (unsigned char) strlen(where);
712 struct iovec failure[3] = {
713 {(void*)&send_errno, sizeof(send_errno)},
714 {&length, 1},
715 {(void*)where, length}
716 };
717 int got = writev(sock, failure, 3);
718 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
719 in the parent if we try to read from the socketpair after the
720 child has exited, even if there was data to read.
721 So sleep a bit to give the parent a fighting chance of
722 reading the data. */
723 sleep(2);
724 _exit((got == -1) ? errno : 0);
725 }
bf357333 726 /* End of child. */
2aa47728 727 }
41e4abd8 728 PL_dumper_fd = fd[0];
2aa47728
NC
729 close(fd[1]);
730 }
731#endif
732
ff0cee69
PP
733 /* We must account for everything. */
734
735 /* Destroy the main CV and syntax tree */
37e77c23
FC
736 /* Set PL_curcop now, because destroying ops can cause new SVs
737 to be generated in Perl_pad_swipe, and when running with
738 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
739 op from which the filename structure member is copied. */
17fbfdf6 740 PL_curcop = &PL_compiling;
3280af22 741 if (PL_main_root) {
4e380990
DM
742 /* ensure comppad/curpad to refer to main's pad */
743 if (CvPADLIST(PL_main_cv)) {
744 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
745 }
3280af22 746 op_free(PL_main_root);
5f66b61c 747 PL_main_root = NULL;
a0d0e21e 748 }
5f66b61c 749 PL_main_start = NULL;
aac9d523
DM
750 /* note that PL_main_cv isn't usually actually freed at this point,
751 * due to the CvOUTSIDE refs from subs compiled within it. It will
752 * get freed once all the subs are freed in sv_clean_all(), for
753 * destruct_level > 0 */
3280af22 754 SvREFCNT_dec(PL_main_cv);
601f1833 755 PL_main_cv = NULL;
ca7b837b 756 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 757
13621cfb
NIS
758 /* Tell PerlIO we are about to tear things apart in case
759 we have layers which are using resources that should
760 be cleaned up now.
761 */
762
763 PerlIO_destruct(aTHX);
764
3280af22 765 if (PL_sv_objcount) {
a0d0e21e
LW
766 /*
767 * Try to destruct global references. We do this first so that the
768 * destructors and destructees still exist. Some sv's might remain.
769 * Non-referenced objects are on their own.
770 */
a0d0e21e 771 sv_clean_objs();
bf9cdc68 772 PL_sv_objcount = 0;
8990e307
LW
773 }
774
5cd24f17 775 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 776 SvREFCNT_dec(PL_warnhook);
a0714e2c 777 PL_warnhook = NULL;
3280af22 778 SvREFCNT_dec(PL_diehook);
a0714e2c 779 PL_diehook = NULL;
5cd24f17 780
4b556e6c 781 /* call exit list functions */
3280af22 782 while (PL_exitlistlen-- > 0)
acfe0abc 783 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 784
3280af22 785 Safefree(PL_exitlist);
4b556e6c 786
1c4916e5
CB
787 PL_exitlist = NULL;
788 PL_exitlistlen = 0;
789
a3e6e81e
NC
790 SvREFCNT_dec(PL_registered_mros);
791
551a8b83 792 /* jettison our possibly duplicated environment */
4b647fb0
DM
793 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
794 * so we certainly shouldn't free it here
795 */
2f42fcb0 796#ifndef PERL_MICRO
4b647fb0 797#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 798 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
799#ifdef USE_ITHREADS
800 /* only main thread can free environ[0] contents */
801 && PL_curinterp == aTHX
802#endif
803 )
804 {
551a8b83
JH
805 I32 i;
806
807 for (i = 0; environ[i]; i++)
4b420006 808 safesysfree(environ[i]);
0631ea03 809
4b420006
JH
810 /* Must use safesysfree() when working with environ. */
811 safesysfree(environ);
551a8b83
JH
812
813 environ = PL_origenviron;
814 }
815#endif
2f42fcb0 816#endif /* !PERL_MICRO */
551a8b83 817
30985c42
JH
818 if (destruct_level == 0) {
819
820 DEBUG_P(debprofdump());
821
822#if defined(PERLIO_LAYERS)
823 /* No more IO - including error messages ! */
824 PerlIO_cleanup(aTHX);
825#endif
826
827 CopFILE_free(&PL_compiling);
30985c42
JH
828
829 /* The exit() function will do everything that needs doing. */
830 return STATUS_EXIT;
831 }
832
5f8cb046
DM
833#ifdef USE_ITHREADS
834 /* the syntax tree is shared between clones
835 * so op_free(PL_main_root) only ReREFCNT_dec's
836 * REGEXPs in the parent interpreter
837 * we need to manually ReREFCNT_dec for the clones
838 */
0547a729
DM
839 {
840 I32 i = AvFILLp(PL_regex_padav);
841 SV **ary = AvARRAY(PL_regex_padav);
842
843 for (; i; i--) {
844 SvREFCNT_dec(ary[i]);
845 ary[i] = &PL_sv_undef;
846 }
847 }
d4d03940 848 Safefree(PL_stashpad);
5f8cb046
DM
849#endif
850
0547a729 851
ad64d0ec 852 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
853 PL_stashcache = NULL;
854
5f05dabc
PP
855 /* loosen bonds of global variables */
856
2f9285f8
DM
857 /* XXX can PL_parser still be non-null here? */
858 if(PL_parser && PL_parser->rsfp) {
859 (void)PerlIO_close(PL_parser->rsfp);
860 PL_parser->rsfp = NULL;
8ebc5c01
PP
861 }
862
84386e14
RGS
863 if (PL_minus_F) {
864 Safefree(PL_splitstr);
865 PL_splitstr = NULL;
866 }
867
8ebc5c01 868 /* switches */
3280af22
NIS
869 PL_minus_n = FALSE;
870 PL_minus_p = FALSE;
871 PL_minus_l = FALSE;
872 PL_minus_a = FALSE;
873 PL_minus_F = FALSE;
874 PL_doswitches = FALSE;
599cee73 875 PL_dowarn = G_WARN_OFF;
d3b97530 876 PL_sawampersand = 0; /* must save all match strings */
3280af22
NIS
877 PL_unsafe = FALSE;
878
879 Safefree(PL_inplace);
bd61b366 880 PL_inplace = NULL;
a7cb1f99 881 SvREFCNT_dec(PL_patchlevel);
1e8125c6 882 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
883
884 if (PL_e_script) {
885 SvREFCNT_dec(PL_e_script);
a0714e2c 886 PL_e_script = NULL;
8ebc5c01
PP
887 }
888
bf9cdc68
RG
889 PL_perldb = 0;
890
8ebc5c01
PP
891 /* magical thingies */
892
e23d9e2f
CS
893 SvREFCNT_dec(PL_ofsgv); /* *, */
894 PL_ofsgv = NULL;
5f05dabc 895
7889fe52 896 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 897 PL_ors_sv = NULL;
8ebc5c01 898
3280af22 899 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 900 PL_rs = NULL;
dc92893f 901
d33b2eba 902 Safefree(PL_osname); /* $^O */
bd61b366 903 PL_osname = NULL;
5f05dabc 904
3280af22 905 SvREFCNT_dec(PL_statname);
a0714e2c
SS
906 PL_statname = NULL;
907 PL_statgv = NULL;
5f05dabc 908
8ebc5c01
PP
909 /* defgv, aka *_ should be taken care of elsewhere */
910
7d5ea4e7
GS
911 /* float buffer */
912 Safefree(PL_efloatbuf);
bd61b366 913 PL_efloatbuf = NULL;
7d5ea4e7
GS
914 PL_efloatsize = 0;
915
8ebc5c01 916 /* startup and shutdown function lists */
3280af22 917 SvREFCNT_dec(PL_beginav);
5a837c8f 918 SvREFCNT_dec(PL_beginav_save);
3280af22 919 SvREFCNT_dec(PL_endav);
7d30b5c4 920 SvREFCNT_dec(PL_checkav);
ece599bd 921 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
922 SvREFCNT_dec(PL_unitcheckav);
923 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 924 SvREFCNT_dec(PL_initav);
7d49f689
NC
925 PL_beginav = NULL;
926 PL_beginav_save = NULL;
927 PL_endav = NULL;
928 PL_checkav = NULL;
929 PL_checkav_save = NULL;
3c10abe3
AG
930 PL_unitcheckav = NULL;
931 PL_unitcheckav_save = NULL;
7d49f689 932 PL_initav = NULL;
5618dfe8 933
8ebc5c01 934 /* shortcuts just get cleared */
a0714e2c
SS
935 PL_envgv = NULL;
936 PL_incgv = NULL;
937 PL_hintgv = NULL;
938 PL_errgv = NULL;
939 PL_argvgv = NULL;
940 PL_argvoutgv = NULL;
941 PL_stdingv = NULL;
942 PL_stderrgv = NULL;
943 PL_last_in_gv = NULL;
944 PL_replgv = NULL;
945 PL_DBgv = NULL;
946 PL_DBline = NULL;
947 PL_DBsub = NULL;
948 PL_DBsingle = NULL;
949 PL_DBtrace = NULL;
950 PL_DBsignal = NULL;
601f1833 951 PL_DBcv = NULL;
7d49f689 952 PL_dbargs = NULL;
5c284bb0 953 PL_debstash = NULL;
8ebc5c01 954
7a1c5554 955 SvREFCNT_dec(PL_argvout_stack);
7d49f689 956 PL_argvout_stack = NULL;
8ebc5c01 957
5c831c24 958 SvREFCNT_dec(PL_modglobal);
5c284bb0 959 PL_modglobal = NULL;
5c831c24 960 SvREFCNT_dec(PL_preambleav);
7d49f689 961 PL_preambleav = NULL;
5c831c24 962 SvREFCNT_dec(PL_subname);
a0714e2c 963 PL_subname = NULL;
ca0c25f6 964#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 965 SvREFCNT_dec(PL_pidstatus);
5c284bb0 966 PL_pidstatus = NULL;
ca0c25f6 967#endif
5c831c24 968 SvREFCNT_dec(PL_toptarget);
a0714e2c 969 PL_toptarget = NULL;
5c831c24 970 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
971 PL_bodytarget = NULL;
972 PL_formtarget = NULL;
5c831c24 973
d33b2eba 974 /* free locale stuff */
b9582b6a 975#ifdef USE_LOCALE_COLLATE
d33b2eba 976 Safefree(PL_collation_name);
bd61b366 977 PL_collation_name = NULL;
b9582b6a 978#endif
d33b2eba 979
b9582b6a 980#ifdef USE_LOCALE_NUMERIC
d33b2eba 981 Safefree(PL_numeric_name);
bd61b366 982 PL_numeric_name = NULL;
a453c169 983 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 984 PL_numeric_radix_sv = NULL;
b9582b6a 985#endif
d33b2eba 986
5c831c24
GS
987 /* clear utf8 character classes */
988 SvREFCNT_dec(PL_utf8_alnum);
5c831c24 989 SvREFCNT_dec(PL_utf8_alpha);
bdd8600f 990 SvREFCNT_dec(PL_utf8_blank);
5c831c24 991 SvREFCNT_dec(PL_utf8_space);
5c831c24
GS
992 SvREFCNT_dec(PL_utf8_graph);
993 SvREFCNT_dec(PL_utf8_digit);
994 SvREFCNT_dec(PL_utf8_upper);
995 SvREFCNT_dec(PL_utf8_lower);
996 SvREFCNT_dec(PL_utf8_print);
997 SvREFCNT_dec(PL_utf8_punct);
998 SvREFCNT_dec(PL_utf8_xdigit);
999 SvREFCNT_dec(PL_utf8_mark);
1000 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1001 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1002 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1003 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1004 SvREFCNT_dec(PL_utf8_idstart);
1005 SvREFCNT_dec(PL_utf8_idcont);
2726813d 1006 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 1007 PL_utf8_alnum = NULL;
a0714e2c 1008 PL_utf8_alpha = NULL;
bdd8600f 1009 PL_utf8_blank = NULL;
a0714e2c 1010 PL_utf8_space = NULL;
a0714e2c
SS
1011 PL_utf8_graph = NULL;
1012 PL_utf8_digit = NULL;
1013 PL_utf8_upper = NULL;
1014 PL_utf8_lower = NULL;
1015 PL_utf8_print = NULL;
1016 PL_utf8_punct = NULL;
1017 PL_utf8_xdigit = NULL;
1018 PL_utf8_mark = NULL;
1019 PL_utf8_toupper = NULL;
1020 PL_utf8_totitle = NULL;
1021 PL_utf8_tolower = NULL;
1022 PL_utf8_tofold = NULL;
1023 PL_utf8_idstart = NULL;
1024 PL_utf8_idcont = NULL;
2726813d 1025 PL_utf8_foldclosures = NULL;
5c831c24 1026
971a9dd3 1027 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1028 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1029 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1030 cophh_free(CopHINTHASH_get(&PL_compiling));
1031 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1032 CopFILE_free(&PL_compiling);
5c831c24 1033
a0d0e21e 1034 /* Prepare to destruct main symbol table. */
5f05dabc 1035
3280af22 1036 hv = PL_defstash;
ca556bcd
DM
1037 /* break ref loop *:: <=> %:: */
1038 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1039 PL_defstash = 0;
a0d0e21e 1040 SvREFCNT_dec(hv);
5c831c24 1041 SvREFCNT_dec(PL_curstname);
a0714e2c 1042 PL_curstname = NULL;
a0d0e21e 1043
5a844595
GS
1044 /* clear queued errors */
1045 SvREFCNT_dec(PL_errors);
a0714e2c 1046 PL_errors = NULL;
5a844595 1047
dd69841b
BB
1048 SvREFCNT_dec(PL_isarev);
1049
a0d0e21e 1050 FREETMPS;
9b387841 1051 if (destruct_level >= 2) {
3280af22 1052 if (PL_scopestack_ix != 0)
9b387841
NC
1053 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1054 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1055 (long)PL_scopestack_ix);
3280af22 1056 if (PL_savestack_ix != 0)
9b387841
NC
1057 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1058 "Unbalanced saves: %ld more saves than restores\n",
1059 (long)PL_savestack_ix);
3280af22 1060 if (PL_tmps_floor != -1)
9b387841
NC
1061 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1062 (long)PL_tmps_floor + 1);
a0d0e21e 1063 if (cxstack_ix != -1)
9b387841
NC
1064 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1065 (long)cxstack_ix + 1);
a0d0e21e 1066 }
8990e307 1067
0547a729
DM
1068#ifdef USE_ITHREADS
1069 SvREFCNT_dec(PL_regex_padav);
1070 PL_regex_padav = NULL;
1071 PL_regex_pad = NULL;
1072#endif
1073
776df701 1074#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1075 /* the entries in this list are allocated via SV PVX's, so get freed
1076 * in sv_clean_all */
1077 Safefree(PL_my_cxt_list);
776df701 1078#endif
57bb2458 1079
8990e307 1080 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1081
1082 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1083 while (sv_clean_all() > 2)
5226ed68
JH
1084 ;
1085
d4777f27
GS
1086 AvREAL_off(PL_fdpid); /* no surviving entries */
1087 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1088 PL_fdpid = NULL;
d33b2eba 1089
6c644e78
GS
1090#ifdef HAVE_INTERP_INTERN
1091 sys_intern_clear();
1092#endif
1093
6e72f9df
PP
1094 /* Destruct the global string table. */
1095 {
1096 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1097 * so that sv_free() won't fail on them.
80459961
NC
1098 * Now that the global string table is using a single hunk of memory
1099 * for both HE and HEK, we either need to explicitly unshare it the
1100 * correct way, or actually free things here.
6e72f9df 1101 */
80459961
NC
1102 I32 riter = 0;
1103 const I32 max = HvMAX(PL_strtab);
c4420975 1104 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1105 HE *hent = array[0];
1106
6e72f9df 1107 for (;;) {
0453d815 1108 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1109 HE * const next = HeNEXT(hent);
9014280d 1110 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1111 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1112 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1113 Safefree(hent);
1114 hent = next;
6e72f9df
PP
1115 }
1116 if (!hent) {
1117 if (++riter > max)
1118 break;
1119 hent = array[riter];
1120 }
1121 }
80459961
NC
1122
1123 Safefree(array);
1124 HvARRAY(PL_strtab) = 0;
1125 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1126 }
3280af22 1127 SvREFCNT_dec(PL_strtab);
6e72f9df 1128
e652bb2f 1129#ifdef USE_ITHREADS
c21d1a0f 1130 /* free the pointer tables used for cloning */
a0739874 1131 ptr_table_free(PL_ptr_table);
bf9cdc68 1132 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1133#endif
a0739874 1134
d33b2eba
GS
1135 /* free special SVs */
1136
1137 SvREFCNT(&PL_sv_yes) = 0;
1138 sv_clear(&PL_sv_yes);
1139 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1140 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1141
1142 SvREFCNT(&PL_sv_no) = 0;
1143 sv_clear(&PL_sv_no);
1144 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1145 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1146
9f375a43
DM
1147 {
1148 int i;
1149 for (i=0; i<=2; i++) {
1150 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1151 sv_clear(PERL_DEBUG_PAD(i));
1152 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1153 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1154 }
1155 }
1156
0453d815 1157 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1158 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1159
eba0f806
DM
1160#ifdef DEBUG_LEAKING_SCALARS
1161 if (PL_sv_count != 0) {
1162 SV* sva;
1163 SV* sv;
eb578fdb 1164 SV* svend;
eba0f806 1165
ad64d0ec 1166 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1167 svend = &sva[SvREFCNT(sva)];
1168 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1169 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1170 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1171 " flags=0x%"UVxf
fd0854ff 1172 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1173 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1174 "serial %"UVuf"\n",
574b8821
NC
1175 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1176 pTHX__VALUE,
fd0854ff
DM
1177 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1178 sv->sv_debug_line,
1179 sv->sv_debug_inpad ? "for" : "by",
1180 sv->sv_debug_optype ?
1181 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1182 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1183 sv->sv_debug_serial
fd0854ff 1184 );
2aa47728 1185#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1186 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1187#endif
eba0f806
DM
1188 }
1189 }
1190 }
1191 }
2aa47728
NC
1192#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1193 {
1194 int status;
1195 fd_set rset;
1196 /* Wait for up to 4 seconds for child to terminate.
1197 This seems to be the least effort way of timing out on reaping
1198 its exit status. */
1199 struct timeval waitfor = {4, 0};
41e4abd8 1200 int sock = PL_dumper_fd;
2aa47728
NC
1201
1202 shutdown(sock, 1);
1203 FD_ZERO(&rset);
1204 FD_SET(sock, &rset);
1205 select(sock + 1, &rset, NULL, NULL, &waitfor);
1206 waitpid(child, &status, WNOHANG);
1207 close(sock);
1208 }
1209#endif
eba0f806 1210#endif
77abb4c6
NC
1211#ifdef DEBUG_LEAKING_SCALARS_ABORT
1212 if (PL_sv_count)
1213 abort();
1214#endif
bf9cdc68 1215 PL_sv_count = 0;
eba0f806 1216
56a2bab7 1217#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1218 /* No more IO - including error messages ! */
1219 PerlIO_cleanup(aTHX);
1220#endif
1221
9f4bd222 1222 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1223 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1224 for no arg - and will try and SvREFCNT_dec it.
1225 */
1226 SvREFCNT(&PL_sv_undef) = 0;
1227 SvREADONLY_off(&PL_sv_undef);
1228
3280af22 1229 Safefree(PL_origfilename);
bd61b366 1230 PL_origfilename = NULL;
43c5f42d 1231 Safefree(PL_reg_curpm);
82ba1be6 1232 Safefree(PL_reg_poscache);
dd28f7bb 1233 free_tied_hv_pool();
3280af22 1234 Safefree(PL_op_mask);
cf36064f 1235 Safefree(PL_psig_name);
bf9cdc68 1236 PL_psig_name = (SV**)NULL;
d525a7b2 1237 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1238 {
1239 /* We need to NULL PL_psig_pend first, so that
1240 signal handlers know not to use it */
1241 int *psig_save = PL_psig_pend;
1242 PL_psig_pend = (int*)NULL;
1243 Safefree(psig_save);
1244 }
6e72f9df 1245 nuke_stacks();
284167a5
SM
1246 TAINTING_set(FALSE);
1247 TAINT_WARN_set(FALSE);
3280af22 1248 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1249 PL_debug = 0;
ac27b0f5 1250
a0d0e21e 1251 DEBUG_P(debprofdump());
d33b2eba 1252
e5dd39fc 1253#ifdef USE_REENTRANT_API
10bc17b6 1254 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1255#endif
1256
612f20c3
GS
1257 sv_free_arenas();
1258
5d9a96ca
DM
1259 while (PL_regmatch_slab) {
1260 regmatch_slab *s = PL_regmatch_slab;
1261 PL_regmatch_slab = PL_regmatch_slab->next;
1262 Safefree(s);
1263 }
1264
fc36a67e
PP
1265 /* As the absolutely last thing, free the non-arena SV for mess() */
1266
3280af22 1267 if (PL_mess_sv) {
f350b448
NC
1268 /* we know that type == SVt_PVMG */
1269
9c63abab 1270 /* it could have accumulated taint magic */
f350b448
NC
1271 MAGIC* mg;
1272 MAGIC* moremagic;
1273 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1274 moremagic = mg->mg_moremagic;
1275 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1276 && mg->mg_len >= 0)
1277 Safefree(mg->mg_ptr);
1278 Safefree(mg);
9c63abab 1279 }
f350b448 1280
fc36a67e 1281 /* we know that type >= SVt_PV */
8bd4d4c5 1282 SvPV_free(PL_mess_sv);
3280af22
NIS
1283 Safefree(SvANY(PL_mess_sv));
1284 Safefree(PL_mess_sv);
a0714e2c 1285 PL_mess_sv = NULL;
fc36a67e 1286 }
37038d91 1287 return STATUS_EXIT;
79072805
LW
1288}
1289
954c1994
GS
1290/*
1291=for apidoc perl_free
1292
1293Releases a Perl interpreter. See L<perlembed>.
1294
1295=cut
1296*/
1297
79072805 1298void
0cb96387 1299perl_free(pTHXx)
79072805 1300{
5174512c
NC
1301 dVAR;
1302
7918f24d
NC
1303 PERL_ARGS_ASSERT_PERL_FREE;
1304
c301d606
DM
1305 if (PL_veto_cleanup)
1306 return;
1307
7cb608b5 1308#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1309 {
1310 /*
1311 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1312 * value as we're probably hunting memory leaks then
1313 */
36e77d41 1314 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1315 const U32 old_debug = PL_debug;
55ef9aae
MHM
1316 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1317 thread at thread exit. */
4fd0a9b8
NC
1318 if (DEBUG_m_TEST) {
1319 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1320 "free this thread's memory\n");
1321 PL_debug &= ~ DEBUG_m_FLAG;
1322 }
55ef9aae
MHM
1323 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1324 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1325 PL_debug = old_debug;
55ef9aae
MHM
1326 }
1327 }
7cb608b5
NC
1328#endif
1329
acfe0abc 1330#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1331# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1332 {
acfe0abc 1333# ifdef NETWARE
7af12a34 1334 void *host = nw_internal_host;
acfe0abc 1335# else
7af12a34 1336 void *host = w32_internal_host;
acfe0abc 1337# endif
7af12a34 1338 PerlMem_free(aTHXx);
acfe0abc 1339# ifdef NETWARE
7af12a34 1340 nw_delete_internal_host(host);
acfe0abc 1341# else
7af12a34 1342 win32_delete_internal_host(host);
acfe0abc 1343# endif
7af12a34 1344 }
1c0ca838
GS
1345# else
1346 PerlMem_free(aTHXx);
1347# endif
acfe0abc
GS
1348#else
1349 PerlMem_free(aTHXx);
76e3520e 1350#endif
79072805
LW
1351}
1352
b7f7fff6 1353#if defined(USE_ITHREADS)
aebd1ac7
GA
1354/* provide destructors to clean up the thread key when libperl is unloaded */
1355#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1356
826955bd 1357#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1358#pragma fini "perl_fini"
666ad1ec
GA
1359#elif defined(__sun) && !defined(__GNUC__)
1360#pragma fini (perl_fini)
aebd1ac7
GA
1361#endif
1362
0dbb1585
AL
1363static void
1364#if defined(__GNUC__)
1365__attribute__((destructor))
aebd1ac7 1366#endif
de009b76 1367perl_fini(void)
aebd1ac7 1368{
27da23d5 1369 dVAR;
c301d606 1370 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1371 FREE_THREAD_KEY;
1372}
1373
1374#endif /* WIN32 */
1375#endif /* THREADS */
1376
4b556e6c 1377void
864dbfa3 1378Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1379{
97aff369 1380 dVAR;
3280af22
NIS
1381 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1382 PL_exitlist[PL_exitlistlen].fn = fn;
1383 PL_exitlist[PL_exitlistlen].ptr = ptr;
1384 ++PL_exitlistlen;
4b556e6c
JD
1385}
1386
b7975bdd
NC
1387STATIC void
1388S_set_caret_X(pTHX) {
97aff369 1389 dVAR;
fafc274c 1390 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1391 if (tmpgv) {
0f1723e1 1392 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1393#if defined(OS2)
1394 sv_setpv(caret_x, os2_execname(aTHX));
1395#else
2982a345
NC
1396# ifdef USE_KERN_PROC_PATHNAME
1397 size_t size = 0;
1398 int mib[4];
1399 mib[0] = CTL_KERN;
1400 mib[1] = KERN_PROC;
1401 mib[2] = KERN_PROC_PATHNAME;
1402 mib[3] = -1;
1403
1404 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1405 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1406 sv_grow(caret_x, size);
1407
1408 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1409 && size > 2) {
1410 SvPOK_only(caret_x);
1411 SvCUR_set(caret_x, size - 1);
1412 SvTAINT(caret_x);
1413 return;
1414 }
1415 }
ae60cb46
NC
1416# elif defined(USE_NSGETEXECUTABLEPATH)
1417 char buf[1];
1418 uint32_t size = sizeof(buf);
ae60cb46
NC
1419
1420 _NSGetExecutablePath(buf, &size);
1421 if (size < MAXPATHLEN * MAXPATHLEN) {
1422 sv_grow(caret_x, size);
1423 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1424 char *const tidied = realpath(SvPVX(caret_x), NULL);
1425 if (tidied) {
1426 sv_setpv(caret_x, tidied);
1427 free(tidied);
1428 } else {
1429 SvPOK_only(caret_x);
1430 SvCUR_set(caret_x, size);
1431 }
1432 return;
1433 }
1434 }
2982a345 1435# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1436 char buf[MAXPATHLEN];
1437 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1438
1439 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1440 includes a spurious NUL which will cause $^X to fail in system
1441 or backticks (this will prevent extensions from being built and
1442 many tests from working). readlink is not meant to add a NUL.
1443 Normal readlink works fine.
1444 */
1445 if (len > 0 && buf[len-1] == '\0') {
1446 len--;
1447 }
1448
1449 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1450 returning the text "unknown" from the readlink rather than the path
1451 to the executable (or returning an error from the readlink). Any
1452 valid path has a '/' in it somewhere, so use that to validate the
1453 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1454 */
1455 if (len > 0 && memchr(buf, '/', len)) {
1456 sv_setpvn(caret_x, buf, len);
82552a95 1457 return;
700dd4f8 1458 }
82552a95
NC
1459# endif
1460 /* Fallback to this: */
0f1723e1 1461 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1462#endif
b7975bdd
NC
1463 }
1464}
1465
954c1994
GS
1466/*
1467=for apidoc perl_parse
1468
1469Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1470
1471=cut
1472*/
1473
03d9f026
FC
1474#define SET_CURSTASH(newstash) \
1475 if (PL_curstash != newstash) { \
1476 SvREFCNT_dec(PL_curstash); \
1477 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1478 }
1479
79072805 1480int
0cb96387 1481perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1482{
27da23d5 1483 dVAR;
6224f72b 1484 I32 oldscope;
6224f72b 1485 int ret;
db36c5a1 1486 dJMPENV;
8d063cd8 1487
7918f24d
NC
1488 PERL_ARGS_ASSERT_PERL_PARSE;
1489#ifndef MULTIPLICITY
ed6c66dd 1490 PERL_UNUSED_ARG(my_perl);
7918f24d 1491#endif
7dc86639 1492#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1493 {
7dc86639
YO
1494 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1495
1496 if (s && (atoi(s) == 1)) {
1497 unsigned char *seed= PERL_HASH_SEED;
1498 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1499 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1500 while (seed < seed_end) {
1501 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1502 }
1503 PerlIO_printf(Perl_debug_log, "\n");
1504 }
b0891165
JH
1505 }
1506#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1507 PL_origargc = argc;
e2975953 1508 PL_origargv = argv;
a0d0e21e 1509
a2722ac9
GA
1510 if (PL_origalen != 0) {
1511 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1512 }
1513 else {
3cb9023d
JH
1514 /* Set PL_origalen be the sum of the contiguous argv[]
1515 * elements plus the size of the env in case that it is
e9137a8e 1516 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1517 * as the maximum modifiable length of $0. In the worst case
1518 * the area we are able to modify is limited to the size of
43c32782 1519 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1520 * --jhi */
e1ec3a88 1521 const char *s = NULL;
54bfe034 1522 int i;
1b6737cc 1523 const UV mask =
7d8e7db3 1524 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1525 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1526 const UV aligned =
43c32782
JH
1527 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1528
1529 /* See if all the arguments are contiguous in memory. Note
1530 * that 'contiguous' is a loose term because some platforms
1531 * align the argv[] and the envp[]. If the arguments look
1532 * like non-aligned, assume that they are 'strictly' or
1533 * 'traditionally' contiguous. If the arguments look like
1534 * aligned, we just check that they are within aligned
1535 * PTRSIZE bytes. As long as no system has something bizarre
1536 * like the argv[] interleaved with some other data, we are
1537 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1538 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1539 while (*s) s++;
1540 for (i = 1; i < PL_origargc; i++) {
1541 if ((PL_origargv[i] == s + 1
43c32782 1542#ifdef OS2
c8941eeb 1543 || PL_origargv[i] == s + 2
43c32782 1544#endif
c8941eeb
JH
1545 )
1546 ||
1547 (aligned &&
1548 (PL_origargv[i] > s &&
1549 PL_origargv[i] <=
1550 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1551 )
1552 {
1553 s = PL_origargv[i];
1554 while (*s) s++;
1555 }
1556 else
1557 break;
54bfe034 1558 }
54bfe034 1559 }
a4a109c2
JD
1560
1561#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1562 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1563 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1564 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1565 ||
1566 (aligned &&
1567 (PL_origenviron[0] > s &&
1568 PL_origenviron[0] <=
1569 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1570 )
1571 {
9d419b5f 1572#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1573 s = PL_origenviron[0];
1574 while (*s) s++;
1575#endif
bd61b366 1576 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1577 /* Force copy of environment. */
1578 for (i = 1; PL_origenviron[i]; i++) {
1579 if (PL_origenviron[i] == s + 1
1580 ||
1581 (aligned &&
1582 (PL_origenviron[i] > s &&
1583 PL_origenviron[i] <=
1584 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1585 )
1586 {
1587 s = PL_origenviron[i];
1588 while (*s) s++;
1589 }
1590 else
1591 break;
54bfe034 1592 }
43c32782 1593 }
54bfe034 1594 }
a4a109c2
JD
1595#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1596
2d2af554 1597 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1598 }
1599
3280af22 1600 if (PL_do_undump) {
a0d0e21e
LW
1601
1602 /* Come here if running an undumped a.out. */
1603
3280af22
NIS
1604 PL_origfilename = savepv(argv[0]);
1605 PL_do_undump = FALSE;
a0d0e21e 1606 cxstack_ix = -1; /* start label stack again */
748a9306 1607 init_ids();
284167a5 1608 assert (!TAINT_get);
b7975bdd
NC
1609 TAINT;
1610 S_set_caret_X(aTHX);
1611 TAINT_NOT;
a0d0e21e
LW
1612 init_postdump_symbols(argc,argv,env);
1613 return 0;
1614 }
1615
3280af22 1616 if (PL_main_root) {
3280af22 1617 op_free(PL_main_root);
5f66b61c 1618 PL_main_root = NULL;
ff0cee69 1619 }
5f66b61c 1620 PL_main_start = NULL;
3280af22 1621 SvREFCNT_dec(PL_main_cv);
601f1833 1622 PL_main_cv = NULL;
79072805 1623
3280af22
NIS
1624 time(&PL_basetime);
1625 oldscope = PL_scopestack_ix;
599cee73 1626 PL_dowarn = G_WARN_OFF;
f86702cc 1627
14dd3ad8 1628 JMPENV_PUSH(ret);
6224f72b 1629 switch (ret) {
312caa8e 1630 case 0:
14dd3ad8 1631 parse_body(env,xsinit);
9ebf26ad 1632 if (PL_unitcheckav) {
3c10abe3 1633 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1634 }
1635 if (PL_checkav) {
ca7b837b 1636 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1637 call_list(oldscope, PL_checkav);
9ebf26ad 1638 }
14dd3ad8
GS
1639 ret = 0;
1640 break;
6224f72b
GS
1641 case 1:
1642 STATUS_ALL_FAILURE;
1643 /* FALL THROUGH */
1644 case 2:
1645 /* my_exit() was called */
3280af22 1646 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1647 LEAVE;
1648 FREETMPS;
03d9f026 1649 SET_CURSTASH(PL_defstash);
9ebf26ad 1650 if (PL_unitcheckav) {
3c10abe3 1651 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1652 }
1653 if (PL_checkav) {
ca7b837b 1654 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1655 call_list(oldscope, PL_checkav);
9ebf26ad 1656 }
37038d91 1657 ret = STATUS_EXIT;
14dd3ad8 1658 break;
6224f72b 1659 case 3:
bf49b057 1660 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1661 ret = 1;
1662 break;
6224f72b 1663 }
14dd3ad8
GS
1664 JMPENV_POP;
1665 return ret;
1666}
1667
4a5df386
NC
1668/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1669 miniperl, and we need to see those flags reflected in the values here. */
1670
1671/* What this returns is subject to change. Use the public interface in Config.
1672 */
1673static void
1674S_Internals_V(pTHX_ CV *cv)
1675{
1676 dXSARGS;
1677#ifdef LOCAL_PATCH_COUNT
1678 const int local_patch_count = LOCAL_PATCH_COUNT;
1679#else
1680 const int local_patch_count = 0;
1681#endif
2dc296d2 1682 const int entries = 3 + local_patch_count;
4a5df386 1683 int i;
fe1c5936 1684 static const char non_bincompat_options[] =
4a5df386
NC
1685# ifdef DEBUGGING
1686 " DEBUGGING"
1687# endif
1688# ifdef NO_MATHOMS
0d311fbe 1689 " NO_MATHOMS"
4a5df386
NC
1690# endif
1691# ifdef PERL_DISABLE_PMC
1692 " PERL_DISABLE_PMC"
1693# endif
1694# ifdef PERL_DONT_CREATE_GVSV
1695 " PERL_DONT_CREATE_GVSV"
1696# endif
9a044a43
NC
1697# ifdef PERL_EXTERNAL_GLOB
1698 " PERL_EXTERNAL_GLOB"
1699# endif
4a5df386
NC
1700# ifdef PERL_IS_MINIPERL
1701 " PERL_IS_MINIPERL"
1702# endif
1703# ifdef PERL_MALLOC_WRAP
1704 " PERL_MALLOC_WRAP"
1705# endif
1706# ifdef PERL_MEM_LOG
1707 " PERL_MEM_LOG"
1708# endif
1709# ifdef PERL_MEM_LOG_NOIMPL
1710 " PERL_MEM_LOG_NOIMPL"
1711# endif
c3cf41ec
NC
1712# ifdef PERL_PRESERVE_IVUV
1713 " PERL_PRESERVE_IVUV"
1714# endif
c051e30b
NC
1715# ifdef PERL_RELOCATABLE_INCPUSH
1716 " PERL_RELOCATABLE_INCPUSH"
1717# endif
4a5df386
NC
1718# ifdef PERL_USE_DEVEL
1719 " PERL_USE_DEVEL"
1720# endif
1721# ifdef PERL_USE_SAFE_PUTENV
1722 " PERL_USE_SAFE_PUTENV"
1723# endif
a3749cf3
NC
1724# ifdef UNLINK_ALL_VERSIONS
1725 " UNLINK_ALL_VERSIONS"
1726# endif
de618ee4
NC
1727# ifdef USE_ATTRIBUTES_FOR_PERLIO
1728 " USE_ATTRIBUTES_FOR_PERLIO"
1729# endif
4a5df386
NC
1730# ifdef USE_FAST_STDIO
1731 " USE_FAST_STDIO"
1732# endif
98548bdf
NC
1733# ifdef USE_LOCALE
1734 " USE_LOCALE"
1735# endif
98548bdf
NC
1736# ifdef USE_LOCALE_CTYPE
1737 " USE_LOCALE_CTYPE"
1738# endif
5a8d8935
NC
1739# ifdef USE_PERL_ATOF
1740 " USE_PERL_ATOF"
1741# endif
0d311fbe
NC
1742# ifdef USE_SITECUSTOMIZE
1743 " USE_SITECUSTOMIZE"
1744# endif
4a5df386
NC
1745 ;
1746 PERL_UNUSED_ARG(cv);
1747 PERL_UNUSED_ARG(items);
1748
1749 EXTEND(SP, entries);
1750
1751 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1752 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1753 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1754
1755#ifdef __DATE__
1756# ifdef __TIME__
1757 PUSHs(Perl_newSVpvn_flags(aTHX_
1758 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1759 SVs_TEMP));
1760# else
1761 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1762 SVs_TEMP));
1763# endif
1764#else
1765 PUSHs(&PL_sv_undef);
1766#endif
1767
4a5df386
NC
1768 for (i = 1; i <= local_patch_count; i++) {
1769 /* This will be an undef, if PL_localpatches[i] is NULL. */
1770 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1771 }
1772
1773 XSRETURN(entries);
1774}
1775
be71fc8f
NC
1776#define INCPUSH_UNSHIFT 0x01
1777#define INCPUSH_ADD_OLD_VERS 0x02
1778#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1779#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1780#define INCPUSH_NOT_BASEDIR 0x10
1781#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1782#define INCPUSH_ADD_SUB_DIRS \
1783 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1784
312caa8e 1785STATIC void *
14dd3ad8 1786S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1787{
27da23d5 1788 dVAR;
2f9285f8 1789 PerlIO *rsfp;
312caa8e 1790 int argc = PL_origargc;
8f42b153 1791 char **argv = PL_origargv;
e1ec3a88 1792 const char *scriptname = NULL;
312caa8e 1793 VOL bool dosearch = FALSE;
eb578fdb 1794 char c;
737c24fc 1795 bool doextract = FALSE;
bd61b366 1796 const char *cddir = NULL;
ab019eaa 1797#ifdef USE_SITECUSTOMIZE
20ef40cf 1798 bool minus_f = FALSE;
ab019eaa 1799#endif
95670bde 1800 SV *linestr_sv = NULL;
5486870f 1801 bool add_read_e_script = FALSE;
87606032 1802 U32 lex_start_flags = 0;
009d90df 1803
ca7b837b 1804 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1805
6224f72b 1806 init_main_stash();
54310121 1807
c7030b81
NC
1808 {
1809 const char *s;
6224f72b
GS
1810 for (argc--,argv++; argc > 0; argc--,argv++) {
1811 if (argv[0][0] != '-' || !argv[0][1])
1812 break;
6224f72b
GS
1813 s = argv[0]+1;
1814 reswitch:
47f56822 1815 switch ((c = *s)) {
729a02f2 1816 case 'C':
1d5472a9
GS
1817#ifndef PERL_STRICT_CR
1818 case '\r':
1819#endif
6224f72b
GS
1820 case ' ':
1821 case '0':
1822 case 'F':
1823 case 'a':
1824 case 'c':
1825 case 'd':
1826 case 'D':
1827 case 'h':
1828 case 'i':
1829 case 'l':
1830 case 'M':
1831 case 'm':
1832 case 'n':
1833 case 'p':
1834 case 's':
1835 case 'u':
1836 case 'U':
1837 case 'v':
599cee73
PM
1838 case 'W':
1839 case 'X':
6224f72b 1840 case 'w':
97bd5664 1841 if ((s = moreswitches(s)))
6224f72b
GS
1842 goto reswitch;
1843 break;
33b78306 1844
1dbad523 1845 case 't':
284167a5
SM
1846#if SILENT_NO_TAINT_SUPPORT
1847 /* silently ignore */
1848#elif NO_TAINT_SUPPORT
1849 Perl_croak("This perl was compiled without taint support. "
1850 "Cowardly refusing to run with -t or -T flags");
1851#else
22f7c9c9 1852 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1853 if( !TAINTING_get ) {
1854 TAINT_WARN_set(TRUE);
1855 TAINTING_set(TRUE);
317ea90d 1856 }
284167a5 1857#endif
317ea90d
MS
1858 s++;
1859 goto reswitch;
6224f72b 1860 case 'T':
284167a5
SM
1861#if SILENT_NO_TAINT_SUPPORT
1862 /* silently ignore */
1863#elif NO_TAINT_SUPPORT
1864 Perl_croak("This perl was compiled without taint support. "
1865 "Cowardly refusing to run with -t or -T flags");
1866#else
22f7c9c9 1867 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1868 TAINTING_set(TRUE);
1869 TAINT_WARN_set(FALSE);
1870#endif
6224f72b
GS
1871 s++;
1872 goto reswitch;
f86702cc 1873
bc9b29db
RH
1874 case 'E':
1875 PL_minus_E = TRUE;
1876 /* FALL THROUGH */
6224f72b 1877 case 'e':
f20b2998 1878 forbid_setid('e', FALSE);
3280af22 1879 if (!PL_e_script) {
396482e1 1880 PL_e_script = newSVpvs("");
5486870f 1881 add_read_e_script = TRUE;
6224f72b
GS
1882 }
1883 if (*++s)
3280af22 1884 sv_catpv(PL_e_script, s);
6224f72b 1885 else if (argv[1]) {
3280af22 1886 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1887 argc--,argv++;
1888 }
1889 else
47f56822 1890 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1891 sv_catpvs(PL_e_script, "\n");
6224f72b 1892 break;
afe37c7d 1893
20ef40cf 1894 case 'f':
f5542d3a 1895#ifdef USE_SITECUSTOMIZE
20ef40cf 1896 minus_f = TRUE;
f5542d3a 1897#endif
20ef40cf
GA
1898 s++;
1899 goto reswitch;
1900
6224f72b 1901 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1902 forbid_setid('I', FALSE);
bd61b366 1903 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1904 argc--,argv++;
1905 }
6224f72b 1906 if (s && *s) {
0df16ed7 1907 STRLEN len = strlen(s);
55b4bc1c 1908 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1909 }
1910 else
a67e862a 1911 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1912 break;
6224f72b 1913 case 'S':
f20b2998 1914 forbid_setid('S', FALSE);
6224f72b
GS
1915 dosearch = TRUE;
1916 s++;
1917 goto reswitch;
1918 case 'V':
7edfd0ef
NC
1919 {
1920 SV *opts_prog;
1921
7edfd0ef 1922 if (*++s != ':') {
37ca4a5b 1923 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1924 }
1925 else {
1926 ++s;
1927 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1928 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1929 0, s, 0);
1930 s += strlen(s);
1931 }
37ca4a5b 1932 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1933 /* don't look for script or read stdin */
1934 scriptname = BIT_BUCKET;
1935 goto reswitch;
6224f72b 1936 }
6224f72b 1937 case 'x':
737c24fc 1938 doextract = TRUE;
6224f72b 1939 s++;
304334da 1940 if (*s)
f4c556ac 1941 cddir = s;
6224f72b
GS
1942 break;
1943 case 0:
1944 break;
1945 case '-':
1946 if (!*++s || isSPACE(*s)) {
1947 argc--,argv++;
1948 goto switch_end;
1949 }
ee8bc8b7
NC
1950 /* catch use of gnu style long options.
1951 Both of these exit immediately. */
1952 if (strEQ(s, "version"))
1953 minus_v();
1954 if (strEQ(s, "help"))
1955 usage();
6224f72b
GS
1956 s--;
1957 /* FALL THROUGH */
1958 default:
cea2e8a9 1959 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1960 }
1961 }
c7030b81
NC
1962 }
1963
6224f72b 1964 switch_end:
54310121 1965
c7030b81
NC
1966 {
1967 char *s;
1968
f675dbe5
CB
1969 if (
1970#ifndef SECURE_INTERNAL_GETENV
284167a5 1971 !TAINTING_get &&
f675dbe5 1972#endif
cf756827 1973 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1974 {
74288ac8
GS
1975 while (isSPACE(*s))
1976 s++;
317ea90d 1977 if (*s == '-' && *(s+1) == 'T') {
284167a5
SM
1978#if SILENT_NO_TAINT_SUPPORT
1979 /* silently ignore */
1980#elif NO_TAINT_SUPPORT
1981 Perl_croak("This perl was compiled without taint support. "
1982 "Cowardly refusing to run with -t or -T flags");
1983#else
22f7c9c9 1984 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1985 TAINTING_set(TRUE);
1986 TAINT_WARN_set(FALSE);
1987#endif
317ea90d 1988 }
74288ac8 1989 else {
bd61b366 1990 char *popt_copy = NULL;
74288ac8 1991 while (s && *s) {
54913509 1992 const char *d;
74288ac8
GS
1993 while (isSPACE(*s))
1994 s++;
1995 if (*s == '-') {
1996 s++;
1997 if (isSPACE(*s))
1998 continue;
1999 }
4ea8f8fb 2000 d = s;
74288ac8
GS
2001 if (!*s)
2002 break;
2b622f1a 2003 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2004 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2005 while (++s && *s) {
2006 if (isSPACE(*s)) {
cf756827 2007 if (!popt_copy) {
bfa6c418
NC
2008 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2009 s = popt_copy + (s - d);
2010 d = popt_copy;
cf756827 2011 }
4ea8f8fb
MS
2012 *s++ = '\0';
2013 break;
2014 }
2015 }
1c4db469 2016 if (*d == 't') {
284167a5
SM
2017#if SILENT_NO_TAINT_SUPPORT
2018 /* silently ignore */
2019#elif NO_TAINT_SUPPORT
2020 Perl_croak("This perl was compiled without taint support. "
2021 "Cowardly refusing to run with -t or -T flags");
2022#else
2023 if( !TAINTING_get) {
2024 TAINT_WARN_set(TRUE);
2025 TAINTING_set(TRUE);
317ea90d 2026 }
284167a5 2027#endif
1c4db469 2028 } else {
97bd5664 2029 moreswitches(d);
1c4db469 2030 }
6224f72b 2031 }
6224f72b
GS
2032 }
2033 }
c7030b81 2034 }
a0d0e21e 2035
c29067d7
CH
2036 /* Set $^X early so that it can be used for relocatable paths in @INC */
2037 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2038 assert (!TAINT_get);
c29067d7
CH
2039 TAINT;
2040 S_set_caret_X(aTHX);
2041 TAINT_NOT;
2042
43c0c913 2043#if defined(USE_SITECUSTOMIZE)
20ef40cf 2044 if (!minus_f) {
43c0c913 2045 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2046 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2047 ie a q() operator with a NUL byte as a the delimiter. This avoids
2048 problems with pathnames containing (say) ' */
43c0c913
NC
2049# ifdef PERL_IS_MINIPERL
2050 AV *const inc = GvAV(PL_incgv);
2051 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2052
2053 if (inc0) {
2054 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2055 Perl_newSVpvf(aTHX_
fc81b718
NC
2056 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2057 0, *inc0, 0,
2058 0, *inc0, 0));
43c0c913
NC
2059 }
2060# else
2061 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2062 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2063 if (raw_sitelib) {
2064 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2065 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2066 INCPUSH_CAN_RELOCATE);
2067 const char *const sitelib = SvPVX(sitelib_sv);
2068 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2069 Perl_newSVpvf(aTHX_
2070 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2071 0, sitelib, 0,
2072 0, sitelib, 0));
2073 assert (SvREFCNT(sitelib_sv) == 1);
2074 SvREFCNT_dec(sitelib_sv);
2075 }
43c0c913 2076# endif
20ef40cf
GA
2077 }
2078#endif
2079
6224f72b
GS
2080 if (!scriptname)
2081 scriptname = argv[0];
3280af22 2082 if (PL_e_script) {
6224f72b
GS
2083 argc++,argv--;
2084 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2085 }
bd61b366 2086 else if (scriptname == NULL) {
6224f72b
GS
2087#ifdef MSDOS
2088 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2089 moreswitches("h");
6224f72b
GS
2090#endif
2091 scriptname = "-";
2092 }
2093
284167a5 2094 assert (!TAINT_get);
2cace6ac 2095 init_perllib();
6224f72b 2096
a52eba0e 2097 {
f20b2998 2098 bool suidscript = FALSE;
829372d3 2099
8d113837 2100 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2101 if (!rsfp) {
2102 rsfp = PerlIO_stdin();
87606032 2103 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2104 }
6224f72b 2105
b24bc095 2106 validate_suid(rsfp);
6224f72b 2107
64ca3a65 2108#ifndef PERL_MICRO
a52eba0e
NC
2109# if defined(SIGCHLD) || defined(SIGCLD)
2110 {
2111# ifndef SIGCHLD
2112# define SIGCHLD SIGCLD
2113# endif
2114 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2115 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2116 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2117 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2118 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2119 }
0b5b802d 2120 }
a52eba0e 2121# endif
64ca3a65 2122#endif
0b5b802d 2123
737c24fc 2124 if (doextract) {
faef540c 2125
f20b2998 2126 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2127 setuid scripts. */
2128 forbid_setid('x', suidscript);
f20b2998 2129 /* Hence you can't get here if suidscript is true */
faef540c 2130
95670bde
NC
2131 linestr_sv = newSV_type(SVt_PV);
2132 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2133 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2134 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2135 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2136 }
f4c556ac 2137 }
6224f72b 2138
ea726b52 2139 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2140 CvUNIQUE_on(PL_compcv);
2141
dd2155a4 2142 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2143
dd69841b
BB
2144 PL_isarev = newHV();
2145
0c4f7ff0 2146 boot_core_PerlIO();
6224f72b 2147 boot_core_UNIVERSAL();
e1a479c5 2148 boot_core_mro();
4a5df386 2149 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2150
2151 if (xsinit)
acfe0abc 2152 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2153#ifndef PERL_MICRO
739a0b84 2154#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2155 init_os_extras();
6224f72b 2156#endif
64ca3a65 2157#endif
6224f72b 2158
29209bc5 2159#ifdef USE_SOCKS
1b9c9cf5
DH
2160# ifdef HAS_SOCKS5_INIT
2161 socks5_init(argv[0]);
2162# else
29209bc5 2163 SOCKSinit(argv[0]);
1b9c9cf5 2164# endif
ac27b0f5 2165#endif
29209bc5 2166
6224f72b
GS
2167 init_predump_symbols();
2168 /* init_postdump_symbols not currently designed to be called */
2169 /* more than once (ENV isn't cleared first, for example) */
2170 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2171 if (!PL_do_undump)
6224f72b
GS
2172 init_postdump_symbols(argc,argv,env);
2173
27da23d5
JH
2174 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2175 * or explicitly in some platforms.
085a54d9 2176 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2177 * look like the user wants to use UTF-8. */
a0fd4948 2178#if defined(__SYMBIAN32__)
27da23d5
JH
2179 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2180#endif
e27b5b51 2181# ifndef PERL_IS_MINIPERL
06e66572
JH
2182 if (PL_unicode) {
2183 /* Requires init_predump_symbols(). */
a05d7ebb 2184 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2185 IO* io;
2186 PerlIO* fp;
2187 SV* sv;
2188
a05d7ebb 2189 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2190 * and the default open disciplines. */
a05d7ebb
JH
2191 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2192 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2193 (fp = IoIFP(io)))
2194 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2195 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2196 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2197 (fp = IoOFP(io)))
2198 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2199 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2200 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2201 (fp = IoOFP(io)))
2202 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2203 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2204 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2205 SVt_PV)))) {
a05d7ebb
JH
2206 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2207 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2208 if (in) {
2209 if (out)
76f68e9b 2210 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2211 else
76f68e9b 2212 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2213 }
2214 else if (out)
76f68e9b 2215 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2216 SvSETMAGIC(sv);
2217 }
b310b053
JH
2218 }
2219 }
e27b5b51 2220#endif
b310b053 2221
c7030b81
NC
2222 {
2223 const char *s;
4ffa73a3
JH
2224 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2225 if (strEQ(s, "unsafe"))
2226 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2227 else if (strEQ(s, "safe"))
2228 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2229 else
2230 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2231 }
c7030b81 2232 }
4ffa73a3 2233
81d86705 2234#ifdef PERL_MAD
c7030b81
NC
2235 {
2236 const char *s;
284167a5 2237 if (!TAINTING_get &&
2cc12391 2238 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC
2239 PL_madskills = 1;
2240 PL_minus_c = 1;
2241 if (!s || !s[0])
2242 PL_xmlfp = PerlIO_stdout();
2243 else {
2244 PL_xmlfp = PerlIO_open(s, "w");
2245 if (!PL_xmlfp)
2246 Perl_croak(aTHX_ "Can't open %s", s);
2247 }
1a9a51d4 2248 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2249 }
c7030b81
NC
2250 }
2251
2252 {
2253 const char *s;
81d86705
NC
2254 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2255 PL_madskills = atoi(s);
1a9a51d4 2256 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2257 }
c7030b81 2258 }
81d86705
NC
2259#endif
2260
87606032 2261 lex_start(linestr_sv, rsfp, lex_start_flags);
95670bde
NC
2262 if(linestr_sv)
2263 SvREFCNT_dec(linestr_sv);
2264
219f7226 2265 PL_subname = newSVpvs("main");
6224f72b 2266
5486870f
DM
2267 if (add_read_e_script)
2268 filter_add(read_e_script, NULL);
2269
6224f72b
GS
2270 /* now parse the script */
2271
93189314 2272 SETERRNO(0,SS_NORMAL);
28ac2b49 2273 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2274 if (PL_minus_c)
cea2e8a9 2275 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2276 else {
cea2e8a9 2277 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2278 PL_origfilename);
6224f72b
GS
2279 }
2280 }
57843af0 2281 CopLINE_set(PL_curcop, 0);
03d9f026 2282 SET_CURSTASH(PL_defstash);
3280af22
NIS
2283 if (PL_e_script) {
2284 SvREFCNT_dec(PL_e_script);
a0714e2c 2285 PL_e_script = NULL;
6224f72b
GS
2286 }
2287
3280af22 2288 if (PL_do_undump)
6224f72b
GS
2289 my_unexec();
2290
57843af0
GS
2291 if (isWARN_ONCE) {
2292 SAVECOPFILE(PL_curcop);
2293 SAVECOPLINE(PL_curcop);
3280af22 2294 gv_check(PL_defstash);
57843af0 2295 }
6224f72b
GS
2296
2297 LEAVE;
2298 FREETMPS;
2299
2300#ifdef MYMALLOC
f6a607bc
RGS
2301 {
2302 const char *s;
6224f72b
GS
2303 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2304 dump_mstats("after compilation:");
f6a607bc 2305 }
6224f72b
GS
2306#endif
2307
2308 ENTER;
febb3a6d 2309 PL_restartjmpenv = NULL;
3280af22 2310 PL_restartop = 0;
312caa8e 2311 return NULL;
6224f72b
GS
2312}
2313
954c1994
GS
2314/*
2315=for apidoc perl_run
2316
2317Tells a Perl interpreter to run. See L<perlembed>.
2318
2319=cut
2320*/
2321
6224f72b 2322int
0cb96387 2323perl_run(pTHXx)
6224f72b 2324{
97aff369 2325 dVAR;
6224f72b 2326 I32 oldscope;
14dd3ad8 2327 int ret = 0;
db36c5a1 2328 dJMPENV;
6224f72b 2329
7918f24d
NC
2330 PERL_ARGS_ASSERT_PERL_RUN;
2331#ifndef MULTIPLICITY
ed6c66dd 2332 PERL_UNUSED_ARG(my_perl);
7918f24d 2333#endif
9d4ba2ae 2334
3280af22 2335 oldscope = PL_scopestack_ix;
96e176bf
CL
2336#ifdef VMS
2337 VMSISH_HUSHED = 0;
2338#endif
6224f72b 2339
14dd3ad8 2340 JMPENV_PUSH(ret);
6224f72b
GS
2341 switch (ret) {
2342 case 1:
2343 cxstack_ix = -1; /* start context stack again */
312caa8e 2344 goto redo_body;
14dd3ad8 2345 case 0: /* normal completion */
14dd3ad8
GS
2346 redo_body:
2347 run_body(oldscope);
14dd3ad8
GS
2348 /* FALL THROUGH */
2349 case 2: /* my_exit() */
3280af22 2350 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2351 LEAVE;
2352 FREETMPS;
03d9f026 2353 SET_CURSTASH(PL_defstash);
3a1ee7e8 2354 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2355 PL_endav && !PL_minus_c) {
ca7b837b 2356 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2357 call_list(oldscope, PL_endav);
9ebf26ad 2358 }
6224f72b
GS
2359#ifdef MYMALLOC
2360 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2361 dump_mstats("after execution: ");
2362#endif
37038d91 2363 ret = STATUS_EXIT;
14dd3ad8 2364 break;
6224f72b 2365 case 3:
312caa8e
CS
2366 if (PL_restartop) {
2367 POPSTACK_TO(PL_mainstack);
2368 goto redo_body;
6224f72b 2369 }
5637ef5b 2370 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2371 FREETMPS;
14dd3ad8
GS
2372 ret = 1;
2373 break;
6224f72b
GS
2374 }
2375
14dd3ad8
GS
2376 JMPENV_POP;
2377 return ret;
312caa8e
CS
2378}
2379
dd374669 2380STATIC void
14dd3ad8
GS
2381S_run_body(pTHX_ I32 oldscope)
2382{
97aff369 2383 dVAR;
d3b97530
DM
2384 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2385 PL_sawampersand ? "Enabling" : "Omitting",
2386 (unsigned int)(PL_sawampersand)));
6224f72b 2387
3280af22 2388 if (!PL_restartop) {
81d86705
NC
2389#ifdef PERL_MAD
2390 if (PL_xmlfp) {
2391 xmldump_all();
2392 exit(0); /* less likely to core dump than my_exit(0) */
2393 }
2394#endif
cf2782cd 2395#ifdef DEBUGGING
f0e3f042
CS
2396 if (DEBUG_x_TEST || DEBUG_B_TEST)
2397 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2398 if (!DEBUG_q_TEST)
2399 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2400#endif
6224f72b 2401
3280af22 2402 if (PL_minus_c) {
bf49b057 2403 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2404 my_exit(0);
2405 }
3280af22 2406 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2407 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2408 if (PL_initav) {
ca7b837b 2409 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2410 call_list(oldscope, PL_initav);
9ebf26ad 2411 }
f1fac472 2412#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2413 if (PL_main_root && PL_main_root->op_slabbed)
2414 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2415#endif
6224f72b
GS
2416 }
2417
2418 /* do it */
2419
ca7b837b 2420 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2421
3280af22 2422 if (PL_restartop) {
febb3a6d 2423 PL_restartjmpenv = NULL;
533c011a 2424 PL_op = PL_restartop;
3280af22 2425 PL_restartop = 0;
cea2e8a9 2426 CALLRUNOPS(aTHX);
6224f72b 2427 }
3280af22
NIS
2428 else if (PL_main_start) {
2429 CvDEPTH(PL_main_cv) = 1;
533c011a 2430 PL_op = PL_main_start;
cea2e8a9 2431 CALLRUNOPS(aTHX);
6224f72b 2432 }
f6b3007c 2433 my_exit(0);
118e2215 2434 assert(0); /* NOTREACHED */
6224f72b
GS
2435}
2436
954c1994 2437/*
ccfc67b7
JH
2438=head1 SV Manipulation Functions
2439
954c1994
GS
2440=for apidoc p||get_sv
2441
64ace3f8
NC
2442Returns the SV of the specified Perl scalar. C<flags> are passed to
2443C<gv_fetchpv>. If C<GV_ADD> is set and the
2444Perl variable does not exist then it will be created. If C<flags> is zero
2445and the variable does not exist then NULL is returned.
954c1994
GS
2446
2447=cut
2448*/
2449
6224f72b 2450SV*
64ace3f8 2451Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2452{
2453 GV *gv;
7918f24d
NC
2454
2455 PERL_ARGS_ASSERT_GET_SV;
2456
64ace3f8 2457 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2458 if (gv)
2459 return GvSV(gv);
a0714e2c 2460 return NULL;
6224f72b
GS
2461}
2462
954c1994 2463/*
ccfc67b7
JH
2464=head1 Array Manipulation Functions
2465
954c1994
GS
2466=for apidoc p||get_av
2467
f0b90de1
SF
2468Returns the AV of the specified Perl global or package array with the given
2469name (so it won't work on lexical variables). C<flags> are passed
2470to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2471Perl variable does not exist then it will be created. If C<flags> is zero
2472and the variable does not exist then NULL is returned.
954c1994 2473
f0b90de1
SF
2474Perl equivalent: C<@{"$name"}>.
2475
954c1994
GS
2476=cut
2477*/
2478
6224f72b 2479AV*
cbfd0a87 2480Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2481{
cbfd0a87 2482 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2483
2484 PERL_ARGS_ASSERT_GET_AV;
2485
cbfd0a87 2486 if (flags)
6224f72b
GS
2487 return GvAVn(gv);
2488 if (gv)
2489 return GvAV(gv);
7d49f689 2490 return NULL;
6224f72b
GS
2491}
2492
954c1994 2493/*
ccfc67b7
JH
2494=head1 Hash Manipulation Functions
2495
954c1994
GS
2496=for apidoc p||get_hv
2497
6673a63c
NC
2498Returns the HV of the specified Perl hash. C<flags> are passed to
2499C<gv_fetchpv>. If C<GV_ADD> is set and the
2500Perl variable does not exist then it will be created. If C<flags> is zero
2501and the variable does not exist then NULL is returned.
954c1994
GS
2502
2503=cut
2504*/
2505
6224f72b 2506HV*
6673a63c 2507Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2508{
6673a63c 2509 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2510
2511 PERL_ARGS_ASSERT_GET_HV;
2512
6673a63c 2513 if (flags)
a0d0e21e
LW
2514 return GvHVn(gv);
2515 if (gv)
2516 return GvHV(gv);
5c284bb0 2517 return NULL;
a0d0e21e
LW
2518}
2519
954c1994 2520/*
ccfc67b7
JH
2521=head1 CV Manipulation Functions
2522
780a5241
NC
2523=for apidoc p||get_cvn_flags
2524
2525Returns the CV of the specified Perl subroutine. C<flags> are passed to
2526C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2527exist then it will be declared (which has the same effect as saying
2528C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2529then NULL is returned.
2530
954c1994
GS
2531=for apidoc p||get_cv
2532
780a5241 2533Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2534
2535=cut
2536*/
2537
a0d0e21e 2538CV*
780a5241 2539Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2540{
780a5241 2541 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2542
2543 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2544
334dda80
FC
2545 /* XXX this is probably not what they think they're getting.
2546 * It has the same effect as "sub name;", i.e. just a forward
2547 * declaration! */
780a5241 2548 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2549 return newSTUB(gv,0);
780a5241 2550 }
a0d0e21e 2551 if (gv)
8ebc5c01 2552 return GvCVu(gv);
601f1833 2553 return NULL;
a0d0e21e
LW
2554}
2555
2c67934f
NC
2556/* Nothing in core calls this now, but we can't replace it with a macro and
2557 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2558CV*
2559Perl_get_cv(pTHX_ const char *name, I32 flags)
2560{
7918f24d
NC
2561 PERL_ARGS_ASSERT_GET_CV;
2562
780a5241
NC
2563 return get_cvn_flags(name, strlen(name), flags);
2564}
2565
79072805
LW
2566/* Be sure to refetch the stack pointer after calling these routines. */
2567
954c1994 2568/*
ccfc67b7
JH
2569
2570=head1 Callback Functions
2571
954c1994
GS
2572=for apidoc p||call_argv
2573
f0b90de1
SF
2574Performs a callback to the specified named and package-scoped Perl subroutine
2575with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2576
2577Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2578
2579=cut
2580*/
2581
a0d0e21e 2582I32
8f42b153 2583Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2584
8ac85365
NIS
2585 /* See G_* flags in cop.h */
2586 /* null terminated arg list */
8990e307 2587{
97aff369 2588 dVAR;
a0d0e21e 2589 dSP;
8990e307 2590
7918f24d
NC
2591 PERL_ARGS_ASSERT_CALL_ARGV;
2592
924508f0 2593 PUSHMARK(SP);
a0d0e21e 2594 if (argv) {
8990e307 2595 while (*argv) {
6e449a3a 2596 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2597 argv++;
2598 }
a0d0e21e 2599 PUTBACK;
8990e307 2600 }
864dbfa3 2601 return call_pv(sub_name, flags);
8990e307
LW
2602}
2603
954c1994
GS
2604/*
2605=for apidoc p||call_pv
2606
2607Performs a callback to the specified Perl sub. See L<perlcall>.
2608
2609=cut
2610*/
2611
a0d0e21e 2612I32
864dbfa3 2613Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2614 /* name of the subroutine */
2615 /* See G_* flags in cop.h */
a0d0e21e 2616{
7918f24d
NC
2617 PERL_ARGS_ASSERT_CALL_PV;
2618
0da0e728 2619 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2620}
2621
954c1994
GS
2622/*
2623=for apidoc p||call_method
2624
2625Performs a callback to the specified Perl method. The blessed object must
2626be on the stack. See L<perlcall>.
2627
2628=cut
2629*/
2630
a0d0e21e 2631I32
864dbfa3 2632Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2633 /* name of the subroutine */
2634 /* See G_* flags in cop.h */
a0d0e21e 2635{
46ca9bac 2636 STRLEN len;
7918f24d
NC
2637 PERL_ARGS_ASSERT_CALL_METHOD;
2638
46ca9bac 2639 len = strlen(methname);
2640
2641 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2642 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2643}
2644
2645/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2646/*
2647=for apidoc p||call_sv
2648
2649Performs a callback to the Perl sub whose name is in the SV. See
2650L<perlcall>.
2651
2652=cut
2653*/
2654
a0d0e21e 2655I32
001d637e 2656Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2657 /* See G_* flags in cop.h */
a0d0e21e 2658{
27da23d5 2659 dVAR; dSP;
a0d0e21e 2660 LOGOP myop; /* fake syntax tree node */
968b3946 2661 UNOP method_op;
aa689395 2662 I32 oldmark;
8ea43dc8 2663 VOL I32 retval = 0;
a0d0e21e 2664 I32 oldscope;
54310121 2665 bool oldcatch = CATCH_GET;
6224f72b 2666 int ret;
c4420975 2667 OP* const oldop = PL_op;
db36c5a1 2668 dJMPENV;
1e422769 2669
7918f24d
NC
2670 PERL_ARGS_ASSERT_CALL_SV;
2671
a0d0e21e
LW
2672 if (flags & G_DISCARD) {
2673 ENTER;
2674 SAVETMPS;
2675 }
2f8edad0
NC
2676 if (!(flags & G_WANT)) {
2677 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2678 */
2679 flags |= G_SCALAR;
2680 }
a0d0e21e 2681
aa689395 2682 Zero(&myop, 1, LOGOP);
f51d4af5 2683 if (!(flags & G_NOARGS))
aa689395 2684 myop.op_flags |= OPf_STACKED;
4f911530 2685 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2686 SAVEOP();
533c011a 2687 PL_op = (OP*)&myop;
aa689395 2688
3280af22
NIS
2689 EXTEND(PL_stack_sp, 1);
2690 *++PL_stack_sp = sv;
aa689395 2691 oldmark = TOPMARK;
3280af22 2692 oldscope = PL_scopestack_ix;
a0d0e21e 2693
3280af22 2694 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2695 /* Handle first BEGIN of -d. */
3280af22 2696 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2697 /* Try harder, since this may have been a sighandler, thus
2698 * curstash may be meaningless. */
ea726b52 2699 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2700 && !(flags & G_NODEBUG))
5ff48db8 2701 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2702
968b3946
GS
2703 if (flags & G_METHOD) {
2704 Zero(&method_op, 1, UNOP);
5ff48db8 2705 method_op.op_next = (OP*)&myop;
968b3946 2706 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2707 method_op.op_type = OP_METHOD;
968b3946 2708 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2709 myop.op_type = OP_ENTERSUB;
f39d0b86 2710 PL_op = (OP*)&method_op;
968b3946
GS
2711 }
2712
312caa8e 2713 if (!(flags & G_EVAL)) {
0cdb2077 2714 CATCH_SET(TRUE);
d6f07c05 2715 CALL_BODY_SUB((OP*)&myop);
312caa8e 2716 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2717 CATCH_SET(oldcatch);
312caa8e
CS
2718 }
2719 else {
d78bda3d 2720 myop.op_other = (OP*)&myop;
3280af22 2721 PL_markstack_ptr--;
edb2152a 2722 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2723 PL_markstack_ptr++;
a0d0e21e 2724
14dd3ad8 2725 JMPENV_PUSH(ret);
edb2152a 2726
6224f72b
GS
2727 switch (ret) {
2728 case 0:
14dd3ad8 2729 redo_body:
d6f07c05 2730 CALL_BODY_SUB((OP*)&myop);
312caa8e 2731 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2732 if (!(flags & G_KEEPERR)) {
ab69dbc2 2733 CLEAR_ERRSV();
8433848b 2734 }
a0d0e21e 2735 break;
6224f72b 2736 case 1:
f86702cc 2737 STATUS_ALL_FAILURE;
a0d0e21e 2738 /* FALL THROUGH */
6224f72b 2739 case 2:
a0d0e21e 2740 /* my_exit() was called */
03d9f026 2741 SET_CURSTASH(PL_defstash);
a0d0e21e 2742 FREETMPS;
14dd3ad8 2743 JMPENV_POP;
f86702cc 2744 my_exit_jump();
118e2215 2745 assert(0); /* NOTREACHED */
6224f72b 2746 case 3:
3280af22 2747 if (PL_restartop) {
febb3a6d 2748 PL_restartjmpenv = NULL;
533c011a 2749 PL_op = PL_restartop;
3280af22 2750 PL_restartop = 0;
312caa8e 2751 goto redo_body;
a0d0e21e 2752 }
3280af22 2753 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2754 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2755 retval = 0;
2756 else {
2757 retval = 1;
3280af22 2758 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2759 }
312caa8e 2760 break;
a0d0e21e 2761 }
a0d0e21e 2762
edb2152a
NC
2763 if (PL_scopestack_ix > oldscope)
2764 delete_eval_scope();
14dd3ad8 2765 JMPENV_POP;
a0d0e21e 2766 }
1e422769 2767
a0d0e21e 2768 if (flags & G_DISCARD) {
3280af22 2769 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2770 retval = 0;
2771 FREETMPS;
2772 LEAVE;
2773 }
533c011a 2774 PL_op = oldop;
a0d0e21e
LW
2775 return retval;
2776}
2777
6e72f9df 2778/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2779
954c1994
GS
2780/*
2781=for apidoc p||eval_sv
2782
be064c4a
DM
2783Tells Perl to C<eval> the string in the SV. It supports the same flags
2784as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2785
2786=cut
2787*/
2788
a0d0e21e 2789I32
864dbfa3 2790Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2791
8ac85365 2792 /* See G_* flags in cop.h */
a0d0e21e 2793{
97aff369 2794 dVAR;
924508f0 2795 dSP;
a0d0e21e 2796 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2797 VOL I32 oldmark = SP - PL_stack_base;
2798 VOL I32 retval = 0;
6224f72b 2799 int ret;
c4420975 2800 OP* const oldop = PL_op;
db36c5a1 2801 dJMPENV;
84902520 2802
7918f24d
NC
2803 PERL_ARGS_ASSERT_EVAL_SV;
2804
4633a7c4
LW
2805 if (flags & G_DISCARD) {
2806 ENTER;
2807 SAVETMPS;
2808 }
2809
462e5cf6 2810 SAVEOP();
533c011a 2811 PL_op = (OP*)&myop;
5ff48db8 2812 Zero(&myop, 1, UNOP);
3280af22
NIS
2813 EXTEND(PL_stack_sp, 1);
2814 *++PL_stack_sp = sv;
79072805 2815
4633a7c4
LW
2816 if (!(flags & G_NOARGS))
2817 myop.op_flags = OPf_STACKED;
6e72f9df 2818 myop.op_type = OP_ENTEREVAL;
4f911530 2819 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2820 if (flags & G_KEEPERR)
2821 myop.op_flags |= OPf_SPECIAL;
d24ca0c5
DM
2822 if (PL_reg_state.re_reparsing)
2823 myop.op_private = OPpEVAL_COPHH;
4633a7c4 2824
dedbcade
DM
2825 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2826 * before a PUSHEVAL, which corrupts the stack after a croak */
2827 TAINT_PROPER("eval_sv()");
2828
14dd3ad8 2829 JMPENV_PUSH(ret);
6224f72b
GS
2830 switch (ret) {
2831 case 0:
14dd3ad8 2832 redo_body:
2ba65d5f
DM
2833 if (PL_op == (OP*)(&myop)) {
2834 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2835 if (!PL_op)
2836 goto fail; /* failed in compilation */
2837 }
4aca2f62 2838 CALLRUNOPS(aTHX);
312caa8e 2839 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2840 if (!(flags & G_KEEPERR)) {
ab69dbc2 2841 CLEAR_ERRSV();
8433848b 2842 }
4633a7c4 2843 break;
6224f72b 2844 case 1:
f86702cc 2845 STATUS_ALL_FAILURE;
4633a7c4 2846 /* FALL THROUGH */
6224f72b 2847 case 2:
4633a7c4 2848 /* my_exit() was called */
03d9f026 2849 SET_CURSTASH(PL_defstash);
4633a7c4 2850 FREETMPS;
14dd3ad8 2851 JMPENV_POP;
f86702cc 2852 my_exit_jump();
118e2215 2853 assert(0); /* NOTREACHED */
6224f72b 2854 case 3:
3280af22 2855 if (PL_restartop) {
febb3a6d 2856 PL_restartjmpenv = NULL;
533c011a 2857 PL_op = PL_restartop;
3280af22 2858 PL_restartop = 0;
312caa8e 2859 goto redo_body;
4633a7c4 2860 }
4aca2f62 2861 fail:
3280af22 2862 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2863 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2864 retval = 0;
2865 else {
2866 retval = 1;
3280af22 2867 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2868 }
312caa8e 2869 break;
4633a7c4
LW
2870 }
2871
14dd3ad8 2872 JMPENV_POP;
4633a7c4 2873 if (flags & G_DISCARD) {
3280af22 2874 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2875 retval = 0;
2876 FREETMPS;
2877 LEAVE;
2878 }
533c011a 2879 PL_op = oldop;
4633a7c4
LW
2880 return retval;
2881}
2882
954c1994
GS
2883/*
2884=for apidoc p||eval_pv
2885
2886Tells Perl to C<eval> the given string and return an SV* result.
2887
2888=cut
2889*/
2890
137443ea 2891SV*
864dbfa3 2892Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2893{
97aff369 2894 dVAR;
137443ea
PP
2895 SV* sv = newSVpv(p, 0);
2896
7918f24d
NC
2897 PERL_ARGS_ASSERT_EVAL_PV;
2898
864dbfa3 2899 eval_sv(sv, G_SCALAR);
137443ea
PP
2900 SvREFCNT_dec(sv);
2901
ed1786ad
DD
2902 {
2903 dSP;
2904 sv = POPs;
2905 PUTBACK;
2906 }
137443ea 2907
2d8e6c8d 2908 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2909 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2910 }
137443ea
PP
2911
2912 return sv;
2913}
2914
4633a7c4
LW
2915/* Require a module. */
2916
954c1994 2917/*
ccfc67b7
JH
2918=head1 Embedding Functions
2919
954c1994
GS
2920=for apidoc p||require_pv
2921
7d3fb230
BS
2922Tells Perl to C<require> the file named by the string argument. It is
2923analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2924implemented that way; consider using load_module instead.
954c1994 2925
7d3fb230 2926=cut */
954c1994 2927
4633a7c4 2928void
864dbfa3 2929Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2930{
97aff369 2931 dVAR;
d3acc0f7 2932 dSP;
97aff369 2933 SV* sv;
7918f24d
NC
2934
2935 PERL_ARGS_ASSERT_REQUIRE_PV;
2936
e788e7d3 2937 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2938 PUTBACK;
be41e5d9
NC
2939 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2940 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2941 SPAGAIN;
2942 POPSTACK;
79072805
LW
2943}
2944
76e3520e 2945STATIC void
b6f82619 2946S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2947{
ab821d7f 2948 /* This message really ought to be max 23 lines.
75c72d73 2949 * Removed -h because the user already knows that option. Others? */
fb73857a 2950
1566c39d
NC
2951 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2952 minimum of 509 character string literals. */
27da23d5 2953 static const char * const usage_msg[] = {
1566c39d
NC
2954" -0[octal] specify record separator (\\0, if no argument)\n"
2955" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2956" -C[number/list] enables the listed Unicode features\n"
2957" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2958" -d[:debugger] run program under debugger\n"
2959" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2960" -e program one line of program (several -e's allowed, omit programfile)\n"
2961" -E program like -e, but enables all optional features\n"
2962" -f don't do $sitelib/sitecustomize.pl at startup\n"
2963" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2964" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2965" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2966" -l[octal] enable line ending processing, specifies line terminator\n"
2967" -[mM][-]module execute \"use/no module...\" before executing program\n"
2968" -n assume \"while (<>) { ... }\" loop around program\n"
2969" -p assume loop like -n but print line also, like sed\n"
2970" -s enable rudimentary parsing for switches after programfile\n"
2971" -S look for programfile using PATH environment variable\n",
2972" -t enable tainting warnings\n"
2973" -T enable tainting checks\n"
2974" -u dump core after parsing program\n"
2975" -U allow unsafe operations\n"
2976" -v print version, patchlevel and license\n"
2977" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2978" -w enable many useful warnings\n"
1566c39d
NC
2979" -W enable all warnings\n"
2980" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2981" -X disable all warnings\n"
2982" \n"
2983"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2984NULL
2985};
27da23d5 2986 const char * const *p = usage_msg;
1566c39d 2987 PerlIO *out = PerlIO_stdout();
fb73857a 2988
1566c39d
NC
2989 PerlIO_printf(out,
2990 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2991 PL_origargv[0]);
fb73857a 2992 while (*p)
1566c39d 2993 PerlIO_puts(out, *p++);
b6f82619 2994 my_exit(0);
4633a7c4
LW
2995}
2996
b4ab917c
DM
2997/* convert a string of -D options (or digits) into an int.
2998 * sets *s to point to the char after the options */
2999
3000#ifdef DEBUGGING
3001int
e1ec3a88 3002Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3003{
27da23d5 3004 static const char * const usage_msgd[] = {
651b8f1a
NC
3005 " Debugging flag values: (see also -d)\n"
3006 " p Tokenizing and parsing (with v, displays parse stack)\n"
3007 " s Stack snapshots (with v, displays all stacks)\n"
3008 " l Context (loop) stack processing\n"
3009 " t Trace execution\n"
3010 " o Method and overloading resolution\n",
3011 " c String/numeric conversions\n"
3012 " P Print profiling info, source file input state\n"
3013 " m Memory and SV allocation\n"
3014 " f Format processing\n"
3015 " r Regular expression parsing and execution\n"
3016 " x Syntax tree dump\n",
3017 " u Tainting checks\n"
3018 " H Hash dump -- usurps values()\n"
3019 " X Scratchpad allocation\n"
3020 " D Cleaning up\n"
56967202 3021 " S Op slab allocation\n"
651b8f1a
NC
3022 " T Tokenising\n"
3023 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3024 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3025 " v Verbose: use in conjunction with other flags\n"
3026 " C Copy On Write\n"
3027 " A Consistency checks on internal structures\n"
3028 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3029 " M trace smart match resolution\n"
3030 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3031 NULL
3032 };
b4ab917c 3033 int i = 0;
7918f24d
NC
3034
3035 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3036
b4ab917c
DM
3037 if (isALPHA(**s)) {
3038 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3039 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
3040
3041 for (; isALNUM(**s); (*s)++) {
c4420975 3042 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3043 if (d)
3044 i |= 1 << (d - debopts);
3045 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3046 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3047 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3048 }
3049 }
e6e64d9b 3050 else if (isDIGIT(**s)) {
b4ab917c
DM
3051 i = atoi(*s);
3052 for (; isALNUM(**s); (*s)++) ;
3053 }
ddcf8bc1 3054 else if (givehelp) {
06e869a4 3055 const char *const *p = usage_msgd;
651b8f1a 3056 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3057 }
b4ab917c
DM
3058# ifdef EBCDIC
3059 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3060 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3061 "-Dp not implemented on this platform\n");
3062# endif
3063 return i;
3064}
3065#endif
3066
79072805
LW
3067/* This routine handles any switches that can be given during run */
3068
c7030b81
NC
3069const char *
3070Perl_moreswitches(pTHX_ const char *s)
79072805 3071{
27da23d5 3072 dVAR;
84c133a0 3073 UV rschar;
0544e6df 3074 const char option = *s; /* used to remember option in -m/-M code */
79072805 3075
7918f24d
NC
3076 PERL_ARGS_ASSERT_MORESWITCHES;
3077
79072805
LW
3078 switch (*s) {
3079 case '0':
a863c7d1 3080 {
f2095865 3081 I32 flags = 0;
a3b680e6 3082 STRLEN numlen;
f2095865
JH
3083
3084 SvREFCNT_dec(PL_rs);
3085 if (s[1] == 'x' && s[2]) {
a3b680e6 3086 const char *e = s+=2;
f2095865
JH
3087 U8 *tmps;
3088
a3b680e6
AL
3089 while (*e)
3090 e++;
f2095865
JH
3091 numlen = e - s;
3092 flags = PERL_SCAN_SILENT_ILLDIGIT;
3093 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3094 if (s + numlen < e) {
3095 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3096 numlen = 0;
3097 s--;
3098 }
396482e1 3099 PL_rs = newSVpvs("");
c5661c80 3100 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3101 tmps = (U8*)SvPVX(PL_rs);
3102 uvchr_to_utf8(tmps, rschar);
3103 SvCUR_set(PL_rs, UNISKIP(rschar));
3104 SvUTF8_on(PL_rs);
3105 }
3106 else {
3107 numlen = 4;
3108 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3109 if (rschar & ~((U8)~0))
3110 PL_rs = &PL_sv_undef;
3111 else if (!rschar && numlen >= 2)
396482e1 3112 PL_rs = newSVpvs("");
f2095865
JH
3113 else {
3114 char ch = (char)rschar;
3115 PL_rs = newSVpvn(&ch, 1);
3116 }
3117 }
64ace3f8 3118 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3119 return s + numlen;
a863c7d1 3120 }
46487f74 3121 case 'C':
a05d7ebb 3122 s++;
dd374669 3123 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3124 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3125 PL_utf8cache = -1;
46487f74 3126 return s;
2304df62 3127 case 'F':
3280af22 3128 PL_minus_F = TRUE;
ebce5377
RGS
3129 PL_splitstr = ++s;
3130 while (*s && !isSPACE(*s)) ++s;
e49e380e 3131 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3132 return s;
79072805 3133 case 'a':
3280af22 3134 PL_minus_a = TRUE;
79072805
LW
3135 s++;
3136 return s;
3137 case 'c':
3280af22 3138 PL_minus_c = TRUE;
79072805
LW
3139 s++;
3140 return s;
3141 case 'd':
f20b2998 3142 forbid_setid('d', FALSE);
4633a7c4 3143 s++;
2cbb2ee1
RGS
3144
3145 /* -dt indicates to the debugger that threads will be used */
3146 if (*s == 't' && !isALNUM(s[1])) {
3147 ++s;
3148 my_setenv("PERL5DB_THREADED", "1");
3149 }
3150
70c94a19
RR
3151 /* The following permits -d:Mod to accepts arguments following an =
3152 in the fashion that -MSome::Mod does. */
3153 if (*s == ':' || *s == '=') {
b19934fb
NC
3154 const char *start;
3155 const char *end;
3156 SV *sv;
3157
3158 if (*++s == '-') {
3159 ++s;
3160 sv = newSVpvs("no Devel::");
3161 } else {
3162 sv = newSVpvs("use Devel::");
3163 }
3164
3165 start = s;
3166 end = s + strlen(s);
f85893a1 3167
b19934fb 3168 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3169 while(isALNUM(*s) || *s==':') ++s;
3170 if (*s != '=')
f85893a1 3171 sv_catpvn(sv, start, end - start);
70c94a19
RR
3172 else {
3173 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3174 /* Don't use NUL as q// delimiter here, this string goes in the
3175 * environment. */
3176 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3177 }
f85893a1 3178 s = end;
184f32ec 3179 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3180 SvREFCNT_dec(sv);
4633a7c4 3181 }
ed094faf 3182 if (!PL_perldb) {
3280af22 3183 PL_perldb = PERLDB_ALL;
a0d0e21e 3184 init_debugger();
ed094faf 3185 }
79072805
LW
3186 return s;
3187 case 'D':
0453d815 3188 {
79072805 3189#ifdef DEBUGGING
f20b2998 3190 forbid_setid('D', FALSE);
b4ab917c 3191 s++;
dd374669 3192 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3193#else /* !DEBUGGING */
0453d815 3194 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3195 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3196 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3197 for (s++; isALNUM(*s); s++) ;
79072805 3198#endif
79072805 3199 return s;
0453d815 3200 }
4633a7c4 3201 case 'h':
b6f82619 3202 usage();
79072805 3203 case 'i':
43c5f42d 3204 Safefree(PL_inplace);
c030f24b
GH
3205#if defined(__CYGWIN__) /* do backup extension automagically */
3206 if (*(s+1) == '\0') {
c86a4f2e 3207 PL_inplace = savepvs(".bak");
c030f24b
GH
3208 return s+1;
3209 }
3210#endif /* __CYGWIN__ */
5ef5d758 3211 {
d4c19fe8 3212 const char * const start = ++s;
5ef5d758
NC
3213 while (*s && !isSPACE(*s))
3214 ++s;
3215
3216 PL_inplace = savepvn(start, s - start);
3217 }
7b8d334a 3218 if (*s) {
5ef5d758 3219 ++s;
7b8d334a 3220 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3221 s++;
7b8d334a 3222 }
fb73857a 3223 return s;
4e49a025 3224 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3225 forbid_setid('I', FALSE);
fb73857a
PP
3226 ++s;
3227 while (*s && isSPACE(*s))
3228 ++s;
3229 if (*s) {
c7030b81 3230 const char *e, *p;
0df16ed7
GS
3231 p = s;
3232 /* ignore trailing spaces (possibly followed by other switches) */
3233 do {
3234 for (e = p; *e && !isSPACE(*e); e++) ;
3235 p = e;
3236 while (isSPACE(*p))
3237 p++;
3238 } while (*p && *p != '-');
55b4bc1c 3239 incpush(s, e-s,
e28f3139 3240 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3241 s = p;
3242 if (*s == '-')
3243 s++;
79072805
LW
3244 }
3245 else
a67e862a 3246 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3247 return s;
79072805 3248 case 'l':
3280af22 3249 PL_minus_l = TRUE;
79072805 3250 s++;
7889fe52
NIS
3251 if (PL_ors_sv) {
3252 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3253 PL_ors_sv = NULL;
7889fe52 3254 }
79072805 3255 if (isDIGIT(*s)) {
53305cf1 3256 I32 flags = 0;
a3b680e6 3257 STRLEN numlen;
396482e1 3258 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3259 numlen = 3 + (*s == '0');
3260 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3261 s += numlen;
3262 }
3263 else {
8bfdd7d9 3264 if (RsPARA(PL_rs)) {
396482e1 3265 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3266 }
3267 else {
8bfdd7d9 3268 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3269 }
79072805
LW
3270 }
3271 return s;
1a30305b 3272 case 'M':
f20b2998 3273 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3274 /* FALL THROUGH */
3275 case 'm':
f20b2998 3276 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3277 if (*++s) {
c7030b81 3278 const char *start;
b64cb68c 3279 const char *end;
11343788 3280 SV *sv;
e1ec3a88 3281 const char *use = "use ";
0544e6df 3282 bool colon = FALSE;
a5f75d66 3283 /* -M-foo == 'no foo' */
d0043bd1
NC
3284 /* Leading space on " no " is deliberate, to make both
3285 possibilities the same length. */
3286 if (*s == '-') { use = " no "; ++s; }
3287 sv = newSVpvn(use,4);
a5f75d66 3288 start = s;
1a30305b 3289 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3290 while(isALNUM(*s) || *s==':') {
3291 if( *s++ == ':' ) {
3292 if( *s == ':' )
3293 s++;
3294 else
3295 colon = TRUE;
3296 }
3297 }
3298 if (s == start)
3299 Perl_croak(aTHX_ "Module name required with -%c option",
3300 option);
3301 if (colon)
3302 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3303 "contains single ':'",
63da6837 3304 (int)(s - start), start, option);
b64cb68c 3305 end = s + strlen(s);
c07a80fd 3306 if (*s != '=') {
b64cb68c 3307 sv_catpvn(sv, start, end - start);
0544e6df 3308 if (option == 'm') {
c07a80fd 3309 if (*s != '\0')
cea2e8a9 3310 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3311 sv_catpvs( sv, " ()");
c07a80fd
PP
3312 }
3313 } else {
11343788 3314 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3315 /* Use NUL as q''-delimiter. */
3316 sv_catpvs(sv, " split(/,/,q\0");
3317 ++s;
3318 sv_catpvn(sv, s, end - s);
396482e1 3319 sv_catpvs(sv, "\0)");
c07a80fd 3320 }
b64cb68c 3321 s = end;
29a861e7 3322 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3323 }
3324 else
0544e6df 3325 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3326 return s;
79072805 3327 case 'n':
3280af22 3328 PL_minus_n = TRUE;
79072805
LW
3329 s++;
3330 return s;
3331 case 'p':
3280af22 3332 PL_minus_p = TRUE;
79072805
LW
3333 s++;
3334 return s;
3335 case 's':
f20b2998 3336 forbid_setid('s', FALSE);
3280af22 3337 PL_doswitches = TRUE;
79072805
LW
3338 s++;
3339 return s;
6537fe72 3340 case 't':
27a6968b 3341 case 'T':
284167a5
SM
3342#if SILENT_NO_TAINT_SUPPORT
3343 /* silently ignore */
3344#elif NO_TAINT_SUPPORT
3345 Perl_croak("This perl was compiled without taint support. "
3346 "Cowardly refusing to run with -t or -T flags");
3347#else
3348 if (!TAINTING_get)
27a6968b 3349 TOO_LATE_FOR(*s);
284167a5 3350#endif
6537fe72 3351 s++;
463ee0b2 3352 return s;
79072805 3353 case 'u':
3280af22 3354 PL_do_undump = TRUE;
79072805
LW
3355 s++;
3356 return s;
3357 case 'U':
3280af22 3358 PL_unsafe = TRUE;
79072805
LW
3359 s++;
3360 return s;
3361 case 'v':
c4bc78d9
NC
3362 minus_v();
3363 case 'w':
3364 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3365 PL_dowarn |= G_WARN_ON;
3366 }
3367 s++;
3368 return s;
3369 case 'W':
3370 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3371 if (!specialWARN(PL_compiling.cop_warnings))
3372 PerlMemShared_free(PL_compiling.cop_warnings);
3373 PL_compiling.cop_warnings = pWARN_ALL ;
3374 s++;
3375 return s;
3376 case 'X':
3377 PL_dowarn = G_WARN_ALL_OFF;
3378 if (!specialWARN(PL_compiling.cop_warnings))
3379 PerlMemShared_free(PL_compiling.cop_warnings);
3380 PL_compiling.cop_warnings = pWARN_NONE ;
3381 s++;
3382 return s;
3383 case '*':
3384 case ' ':
3385 while( *s == ' ' )
3386 ++s;
3387 if (s[0] == '-') /* Additional switches on #! line. */
3388 return s+1;
3389 break;
3390 case '-':
3391 case 0:
3392#if defined(WIN32) || !defined(PERL_STRICT_CR)
3393 case '\r':
3394#endif
3395 case '\n':
3396 case '\t':
3397 break;
3398#ifdef ALTERNATE_SHEBANG
3399 case 'S': /* OS/2 needs -S on "extproc" line. */
3400 break;
3401#endif
4bb78d63
CB
3402 case 'e': case 'f': case 'x': case 'E':
3403#ifndef ALTERNATE_SHEBANG
3404 case 'S':
3405#endif
3406 case 'V':
c4bc78d9 3407 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3408 default:
3409 Perl_croak(aTHX_
3410 "Unrecognized switch: -%.1s (-h will show valid options)",s
3411 );
c4bc78d9
NC
3412 }
3413 return NULL;
3414}
3415
3416
3417STATIC void
3418S_minus_v(pTHX)
3419{
fc3381af 3420 PerlIO * PIO_stdout;
d7aa5382 3421 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3422 upg_version(PL_patchlevel, TRUE);
8e9464f1 3423#if !defined(DGUX)
46807d8e
YO
3424 {
3425 SV* level= vstringify(PL_patchlevel);
3426#ifdef PERL_PATCHNUM
23d483e2
NC
3427# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3428 SV *num = newSVpvs(PERL_PATCHNUM "*");
3429# else
3430 SV *num = newSVpvs(PERL_PATCHNUM);
3431# endif
fc3381af
DD
3432 {
3433 STRLEN level_len, num_len;
3434 char * level_str, * num_str;
3435 num_str = SvPV(num, num_len);
3436 level_str = SvPV(level, level_len);
3437 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3438 SvREFCNT_dec(level);
3439 level= num;
3440 } else {
3441 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3442 SvREFCNT_dec(num);
3443 }
46807d8e
YO
3444 }
3445 #endif
fc3381af
DD
3446 PIO_stdout = PerlIO_stdout();
3447 PerlIO_printf(PIO_stdout,
ded326e4
DG
3448 "\nThis is perl " STRINGIFY(PERL_REVISION)
3449 ", version " STRINGIFY(PERL_VERSION)
3450 ", subversion " STRINGIFY(PERL_SUBVERSION)
3451 " (%"SVf") built for " ARCHNAME, level
3452 );
46807d8e
YO
3453 SvREFCNT_dec(level);
3454 }
8e9464f1 3455#else /* DGUX */
fc3381af 3456 PIO_stdout = PerlIO_stdout();
8e9464f1 3457/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
fc3381af 3458 PerlIO_printf(PIO_stdout,
52ea0aec 3459 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3460 SVfARG(vstringify(PL_patchlevel))));
fc3381af 3461 PerlIO_printf(PIO_stdout,
8e9464f1
JH
3462 Perl_form(aTHX_ " built under %s at %s %s\n",
3463 OSNAME, __DATE__, __TIME__));
fc3381af 3464 PerlIO_printf(PIO_stdout,
8e9464f1 3465 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3466 OSVERS));
8e9464f1 3467#endif /* !DGUX */
fb73857a
PP
3468#if defined(LOCAL_PATCH_COUNT)
3469 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3470 PerlIO_printf(PIO_stdout,
b0e47665
GS
3471 "\n(with %d registered patch%s, "
3472 "see perl -V for more detail)",
bb7a0f54 3473 LOCAL_PATCH_COUNT,
b0e47665 3474 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3475#endif
1a30305b 3476
fc3381af 3477 PerlIO_printf(PIO_stdout,
fdfb76e4 3478 "\n\nCopyright 1987-2012, Larry Wall\n");
79072805 3479#ifdef MSDOS
fc3381af 3480 PerlIO_printf(PIO_stdout,
b0e47665 3481 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3482#endif
3483#ifdef DJGPP
fc3381af 3484 PerlIO_printf(PIO_stdout,
b0e47665
GS
3485 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3486 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3487#endif
79072805 3488#ifdef OS2
fc3381af 3489 PerlIO_printf(PIO_stdout,
b0e47665 3490 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3491 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3492#endif
a3f9223b 3493#ifdef __BEOS__
fc3381af 3494 PerlIO_printf(PIO_stdout,
b0e47665 3495 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3496#endif
9d116dd7 3497#ifdef OEMVS
fc3381af 3498 PerlIO_printf(PIO_stdout,
b0e47665 3499 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3500#endif
495c5fdc 3501#ifdef __VOS__
fc3381af 3502 PerlIO_printf(PIO_stdout,
94efb9fb 3503 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3504#endif
a1a0e61e 3505#ifdef POSIX_BC
fc3381af 3506 PerlIO_printf(PIO_stdout,
b0e47665 3507 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3508#endif
e1caacb4 3509#ifdef UNDER_CE
fc3381af
DD
3510 PerlIO_printf(PIO_stdout,
3511 "WINCE port by Rainer Keuchel, 2001-2002\n"
3512 "Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3513 wce_hitreturn();
3514#endif
a0fd4948 3515#ifdef __SYMBIAN32__
fc3381af 3516 PerlIO_printf(PIO_stdout,
27da23d5
JH
3517 "Symbian port by Nokia, 2004-2005\n");
3518#endif
baed7233
DL
3519#ifdef BINARY_BUILD_NOTICE
3520 BINARY_BUILD_NOTICE;
3521#endif
fc3381af 3522 PerlIO_printf(PIO_stdout,
b0e47665 3523 "\n\