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dump.c: avoid compiler warning under -Dmad
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4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
39#endif
40
2982a345
NC
41#ifdef USE_KERN_PROC_PATHNAME
42# include <sys/sysctl.h>
43#endif
44
ae60cb46
NC
45#ifdef USE_NSGETEXECUTABLEPATH
46# include <mach-o/dyld.h>
47#endif
48
2aa47728 49#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
50# ifdef I_SYSUIO
51# include <sys/uio.h>
52# endif
53
54union control_un {
55 struct cmsghdr cm;
56 char control[CMSG_SPACE(sizeof(int))];
57};
58
2aa47728
NC
59#endif
60
5311654c
JH
61#ifndef HZ
62# ifdef CLK_TCK
63# define HZ CLK_TCK
64# else
65# define HZ 60
66# endif
67#endif
68
7114a2d2 69#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 70char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
71#endif
72
acfe0abc 73static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 74
cc69b689 75#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 76# define validate_suid(rsfp) NOOP
cc69b689 77#else
b24bc095 78# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 79#endif
8d063cd8 80
d6f07c05
AL
81#define CALL_BODY_SUB(myop) \
82 if (PL_op == (myop)) \
139d0ce6 83 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
84 if (PL_op) \
85 CALLRUNOPS(aTHX);
86
87#define CALL_LIST_BODY(cv) \
88 PUSHMARK(PL_stack_sp); \
9a8aa25b 89 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 90
e6827a76 91static void
daa7d858 92S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 93{
27da23d5 94 dVAR;
e6827a76
NC
95 if (!PL_curinterp) {
96 PERL_SET_INTERP(my_perl);
3db8f154 97#if defined(USE_ITHREADS)
e6827a76
NC
98 INIT_THREADS;
99 ALLOC_THREAD_KEY;
100 PERL_SET_THX(my_perl);
101 OP_REFCNT_INIT;
e8570548 102 OP_CHECK_MUTEX_INIT;
71ad1b0c 103 HINTS_REFCNT_INIT;
e6827a76 104 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
105 MUTEX_INIT(&PL_my_ctx_mutex);
106# endif
e6827a76 107 }
c0bce9aa
NC
108#if defined(USE_ITHREADS)
109 else
110#else
111 /* This always happens for non-ithreads */
112#endif
113 {
e6827a76
NC
114 PERL_SET_THX(my_perl);
115 }
116}
06d86050 117
cbec8ebe
DM
118
119/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
120
121void
122Perl_sys_init(int* argc, char*** argv)
123{
4fc0badb 124 dVAR;
7918f24d
NC
125
126 PERL_ARGS_ASSERT_SYS_INIT;
127
cbec8ebe
DM
128 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
129 PERL_UNUSED_ARG(argv);
130 PERL_SYS_INIT_BODY(argc, argv);
131}
132
133void
134Perl_sys_init3(int* argc, char*** argv, char*** env)
135{
4fc0badb 136 dVAR;
7918f24d
NC
137
138 PERL_ARGS_ASSERT_SYS_INIT3;
139
cbec8ebe
DM
140 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
141 PERL_UNUSED_ARG(argv);
142 PERL_UNUSED_ARG(env);
143 PERL_SYS_INIT3_BODY(argc, argv, env);
144}
145
146void
d0820ef1 147Perl_sys_term()
cbec8ebe 148{
4fc0badb 149 dVAR;
bf81751b
DM
150 if (!PL_veto_cleanup) {
151 PERL_SYS_TERM_BODY();
152 }
cbec8ebe
DM
153}
154
155
32e30700
GS
156#ifdef PERL_IMPLICIT_SYS
157PerlInterpreter *
7766f137
GS
158perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
159 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
160 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
161 struct IPerlDir* ipD, struct IPerlSock* ipS,
162 struct IPerlProc* ipP)
163{
164 PerlInterpreter *my_perl;
7918f24d
NC
165
166 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
167
9f653bb5 168 /* Newx() needs interpreter, so call malloc() instead */
32e30700 169 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 170 S_init_tls_and_interp(my_perl);
32e30700
GS
171 Zero(my_perl, 1, PerlInterpreter);
172 PL_Mem = ipM;
7766f137
GS
173 PL_MemShared = ipMS;
174 PL_MemParse = ipMP;
32e30700
GS
175 PL_Env = ipE;
176 PL_StdIO = ipStd;
177 PL_LIO = ipLIO;
178 PL_Dir = ipD;
179 PL_Sock = ipS;
180 PL_Proc = ipP;
7cb608b5 181 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 182
32e30700
GS
183 return my_perl;
184}
185#else
954c1994
GS
186
187/*
ccfc67b7
JH
188=head1 Embedding Functions
189
954c1994
GS
190=for apidoc perl_alloc
191
192Allocates a new Perl interpreter. See L<perlembed>.
193
194=cut
195*/
196
93a17b20 197PerlInterpreter *
cea2e8a9 198perl_alloc(void)
79072805 199{
cea2e8a9 200 PerlInterpreter *my_perl;
79072805 201
9f653bb5 202 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 203 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 204
e6827a76 205 S_init_tls_and_interp(my_perl);
7cb608b5 206#ifndef PERL_TRACK_MEMPOOL
07409e01 207 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
208#else
209 Zero(my_perl, 1, PerlInterpreter);
210 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
211 return my_perl;
212#endif
79072805 213}
32e30700 214#endif /* PERL_IMPLICIT_SYS */
79072805 215
954c1994
GS
216/*
217=for apidoc perl_construct
218
219Initializes a new Perl interpreter. See L<perlembed>.
220
221=cut
222*/
223
79072805 224void
0cb96387 225perl_construct(pTHXx)
79072805 226{
27da23d5 227 dVAR;
7918f24d
NC
228
229 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
230
8990e307 231#ifdef MULTIPLICITY
54aff467 232 init_interp();
ac27b0f5 233 PL_perl_destruct_level = 1;
54aff467 234#else
7918f24d 235 PERL_UNUSED_ARG(my_perl);
54aff467
GS
236 if (PL_perl_destruct_level > 0)
237 init_interp();
238#endif
34caed6d
DM
239 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
240
0d96b528 241 init_constants();
34caed6d
DM
242
243 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 244 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
245
246 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 247#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 248 PL_pidstatus = newHV();
ca0c25f6 249#endif
79072805 250
396482e1 251 PL_rs = newSVpvs("\n");
dc92893f 252
cea2e8a9 253 init_stacks();
79072805 254
748a9306 255 init_ids();
a5f75d66 256
312caa8e 257 JMPENV_BOOTSTRAP;
f86702cc
PP
258 STATUS_ALL_SUCCESS;
259
0672f40e 260 init_i18nl10n(1);
36477c24 261 SET_NUMERIC_STANDARD();
0b5b802d 262
ab821d7f 263#if defined(LOCAL_PATCH_COUNT)
3280af22 264 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
265#endif
266
52853b95
GS
267#ifdef HAVE_INTERP_INTERN
268 sys_intern_init();
269#endif
270
3a1ee7e8 271 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 272
3280af22
NIS
273 PL_fdpid = newAV(); /* for remembering popen pids by fd */
274 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 275 PL_errors = newSVpvs("");
76f68e9b
MHM
276 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
277 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
278 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 279#ifdef USE_ITHREADS
402d2eb1
NC
280 /* First entry is a list of empty elements. It needs to be initialised
281 else all hell breaks loose in S_find_uninit_var(). */
282 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 283 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 284 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 285#endif
e5dd39fc 286#ifdef USE_REENTRANT_API
59bd0823 287 Perl_reentrant_init(aTHX);
e5dd39fc 288#endif
7dc86639
YO
289#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
290 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
291 * This MUST be done before any hash stores or fetches take place.
292 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
293 * yourself, it is your responsibility to provide a good random seed!
294 * You can also define PERL_HASH_SEED in compile time, see hv.h.
295 *
296 * XXX: fix this comment */
297 if (PL_hash_seed_set == FALSE) {
298 Perl_get_hash_seed(aTHX_ PL_hash_seed);
299 PL_hash_seed_set= TRUE;
300 }
301#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
302
303 /* Note that strtab is a rather special HV. Assumptions are made
304 about not iterating on it, and not adding tie magic to it.
305 It is properly deallocated in perl_destruct() */
306 PL_strtab = newHV();
307
3d47000e
AB
308 HvSHAREKEYS_off(PL_strtab); /* mandatory */
309 hv_ksplit(PL_strtab, 512);
310
0631ea03
AB
311#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
312 _dyld_lookup_and_bind
313 ("__environ", (unsigned long *) &environ_pointer, NULL);
314#endif /* environ */
315
2f42fcb0
JH
316#ifndef PERL_MICRO
317# ifdef USE_ENVIRON_ARRAY
0631ea03 318 PL_origenviron = environ;
2f42fcb0 319# endif
0631ea03
AB
320#endif
321
5311654c 322 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 323 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
324 * The HZ if not originally defined has been by now
325 * been defined as CLK_TCK, if available. */
b6c36746 326#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
327 PL_clocktick = sysconf(_SC_CLK_TCK);
328 if (PL_clocktick <= 0)
329#endif
330 PL_clocktick = HZ;
331
081fc587
AB
332 PL_stashcache = newHV();
333
e8e3635e 334 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 335 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 336
27da23d5
JH
337#ifdef HAS_MMAP
338 if (!PL_mmap_page_size) {
339#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
340 {
341 SETERRNO(0, SS_NORMAL);
342# ifdef _SC_PAGESIZE
343 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
344# else
345 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
346# endif
347 if ((long) PL_mmap_page_size < 0) {
348 if (errno) {
44f8325f 349 SV * const error = ERRSV;
d4c19fe8 350 SvUPGRADE(error, SVt_PV);
0510663f 351 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
352 }
353 else
354 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
355 }
356 }
357#else
358# ifdef HAS_GETPAGESIZE
359 PL_mmap_page_size = getpagesize();
360# else
361# if defined(I_SYS_PARAM) && defined(PAGESIZE)
362 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
363# endif
364# endif
365#endif
366 if (PL_mmap_page_size <= 0)
367 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
368 (IV) PL_mmap_page_size);
369 }
370#endif /* HAS_MMAP */
371
372#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
373 PL_timesbase.tms_utime = 0;
374 PL_timesbase.tms_stime = 0;
375 PL_timesbase.tms_cutime = 0;
376 PL_timesbase.tms_cstime = 0;
377#endif
378
7d113631
NC
379 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
380
a3e6e81e 381 PL_registered_mros = newHV();
9e169432
NC
382 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
383 HvMAX(PL_registered_mros) = 0;
a3e6e81e 384
8990e307 385 ENTER;
79072805
LW
386}
387
954c1994 388/*
62375a60
NIS
389=for apidoc nothreadhook
390
391Stub that provides thread hook for perl_destruct when there are
392no threads.
393
394=cut
395*/
396
397int
4e9e3734 398Perl_nothreadhook(pTHX)
62375a60 399{
96a5add6 400 PERL_UNUSED_CONTEXT;
62375a60
NIS
401 return 0;
402}
403
41e4abd8
NC
404#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
405void
406Perl_dump_sv_child(pTHX_ SV *sv)
407{
408 ssize_t got;
bf357333
NC
409 const int sock = PL_dumper_fd;
410 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
411 union control_un control;
412 struct msghdr msg;
808ad2d0 413 struct iovec vec[2];
bf357333 414 struct cmsghdr *cmptr;
808ad2d0
NC
415 int returned_errno;
416 unsigned char buffer[256];
41e4abd8 417
7918f24d
NC
418 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
419
bf357333 420 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
421 return;
422
423 PerlIO_flush(Perl_debug_log);
424
bf357333
NC
425 /* All these shenanigans are to pass a file descriptor over to our child for
426 it to dump out to. We can't let it hold open the file descriptor when it
427 forks, as the file descriptor it will dump to can turn out to be one end
428 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 429 be open, the wait would be forever.) */
bf357333
NC
430
431 msg.msg_control = control.control;
432 msg.msg_controllen = sizeof(control.control);
433 /* We're a connected socket so we don't need a destination */
434 msg.msg_name = NULL;
435 msg.msg_namelen = 0;
436 msg.msg_iov = vec;
808ad2d0 437 msg.msg_iovlen = 1;
bf357333
NC
438
439 cmptr = CMSG_FIRSTHDR(&msg);
440 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
441 cmptr->cmsg_level = SOL_SOCKET;
442 cmptr->cmsg_type = SCM_RIGHTS;
443 *((int *)CMSG_DATA(cmptr)) = 1;
444
445 vec[0].iov_base = (void*)&sv;
446 vec[0].iov_len = sizeof(sv);
447 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
448
449 if(got < 0) {
bf357333 450 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
451 abort();
452 }
bf357333
NC
453 if(got < sizeof(sv)) {
454 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
455 abort();
456 }
457
808ad2d0
NC
458 /* Return protocol is
459 int: errno value
460 unsigned char: length of location string (0 for empty)
461 unsigned char*: string (not terminated)
462 */
463 vec[0].iov_base = (void*)&returned_errno;
464 vec[0].iov_len = sizeof(returned_errno);
465 vec[1].iov_base = buffer;
466 vec[1].iov_len = 1;
467
468 got = readv(sock, vec, 2);
41e4abd8
NC
469
470 if(got < 0) {
471 perror("Debug leaking scalars parent read failed");
808ad2d0 472 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
473 abort();
474 }
808ad2d0 475 if(got < sizeof(returned_errno) + 1) {
41e4abd8 476 perror("Debug leaking scalars parent short read");
808ad2d0 477 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
478 abort();
479 }
480
808ad2d0
NC
481 if (*buffer) {
482 got = read(sock, buffer + 1, *buffer);
483 if(got < 0) {
484 perror("Debug leaking scalars parent read 2 failed");
485 PerlIO_flush(PerlIO_stderr());
486 abort();
487 }
488
489 if(got < *buffer) {
490 perror("Debug leaking scalars parent short read 2");
491 PerlIO_flush(PerlIO_stderr());
492 abort();
493 }
494 }
495
496 if (returned_errno || *buffer) {
497 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
498 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
499 returned_errno, strerror(returned_errno));
41e4abd8
NC
500 }
501}
502#endif
503
62375a60 504/*
954c1994
GS
505=for apidoc perl_destruct
506
507Shuts down a Perl interpreter. See L<perlembed>.
508
509=cut
510*/
511
31d77e54 512int
0cb96387 513perl_destruct(pTHXx)
79072805 514{
27da23d5 515 dVAR;
be2ea8ed 516 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 517 HV *hv;
2aa47728 518#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
519 pid_t child;
520#endif
9c0b6888 521 int i;
8990e307 522
7918f24d
NC
523 PERL_ARGS_ASSERT_PERL_DESTRUCT;
524#ifndef MULTIPLICITY
ed6c66dd 525 PERL_UNUSED_ARG(my_perl);
7918f24d 526#endif
9d4ba2ae 527
3d22c4f0
GG
528 assert(PL_scopestack_ix == 1);
529
7766f137
GS
530 /* wait for all pseudo-forked children to finish */
531 PERL_WAIT_FOR_CHILDREN;
532
3280af22 533 destruct_level = PL_perl_destruct_level;
36e77d41 534#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 535 {
9d4ba2ae
AL
536 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
537 if (s) {
36e77d41
DD
538 const int i = atoi(s);
539#ifdef DEBUGGING
540 if (destruct_level < i) destruct_level = i;
541#endif
542#ifdef PERL_TRACK_MEMPOOL
543 /* RT #114496, for perl_free */
544 PL_perl_destruct_level = i;
545#endif
5f05dabc 546 }
4633a7c4
LW
547 }
548#endif
549
27da23d5 550 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
551 dJMPENV;
552 int x = 0;
553
554 JMPENV_PUSH(x);
1b6737cc 555 PERL_UNUSED_VAR(x);
9ebf26ad 556 if (PL_endav && !PL_minus_c) {
ca7b837b 557 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 558 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 559 }
f3faeb53 560 JMPENV_POP;
26f423df 561 }
f3faeb53 562 LEAVE;
a0d0e21e 563 FREETMPS;
3d22c4f0 564 assert(PL_scopestack_ix == 0);
a0d0e21e 565
e00b64d4 566 /* Need to flush since END blocks can produce output */
f13a2bc0 567 my_fflush_all();
e00b64d4 568
16c91539 569 if (PL_threadhook(aTHX)) {
62375a60 570 /* Threads hook has vetoed further cleanup */
c301d606 571 PL_veto_cleanup = TRUE;
37038d91 572 return STATUS_EXIT;
62375a60
NIS
573 }
574
2aa47728
NC
575#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
576 if (destruct_level != 0) {
577 /* Fork here to create a child. Our child's job is to preserve the
578 state of scalars prior to destruction, so that we can instruct it
579 to dump any scalars that we later find have leaked.
580 There's no subtlety in this code - it assumes POSIX, and it doesn't
581 fail gracefully */
582 int fd[2];
583
584 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
585 perror("Debug leaking scalars socketpair failed");
586 abort();
587 }
588
589 child = fork();
590 if(child == -1) {
591 perror("Debug leaking scalars fork failed");
592 abort();
593 }
594 if (!child) {
595 /* We are the child */
3125a5a4
NC
596 const int sock = fd[1];
597 const int debug_fd = PerlIO_fileno(Perl_debug_log);
598 int f;
808ad2d0
NC
599 const char *where;
600 /* Our success message is an integer 0, and a char 0 */
b61433a9 601 static const char success[sizeof(int) + 1] = {0};
3125a5a4 602
2aa47728 603 close(fd[0]);
2aa47728 604
3125a5a4
NC
605 /* We need to close all other file descriptors otherwise we end up
606 with interesting hangs, where the parent closes its end of a
607 pipe, and sits waiting for (another) child to terminate. Only
608 that child never terminates, because it never gets EOF, because
bf357333
NC
609 we also have the far end of the pipe open. We even need to
610 close the debugging fd, because sometimes it happens to be one
611 end of a pipe, and a process is waiting on the other end for
612 EOF. Normally it would be closed at some point earlier in
613 destruction, but if we happen to cause the pipe to remain open,
614 EOF never occurs, and we get an infinite hang. Hence all the
615 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
616
617 f = sysconf(_SC_OPEN_MAX);
618 if(f < 0) {
808ad2d0
NC
619 where = "sysconf failed";
620 goto abort;
3125a5a4
NC
621 }
622 while (f--) {
623 if (f == sock)
624 continue;
3125a5a4
NC
625 close(f);
626 }
627
2aa47728
NC
628 while (1) {
629 SV *target;
bf357333
NC
630 union control_un control;
631 struct msghdr msg;
632 struct iovec vec[1];
633 struct cmsghdr *cmptr;
634 ssize_t got;
635 int got_fd;
636
637 msg.msg_control = control.control;
638 msg.msg_controllen = sizeof(control.control);
639 /* We're a connected socket so we don't need a source */
640 msg.msg_name = NULL;
641 msg.msg_namelen = 0;
642 msg.msg_iov = vec;
643 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
644
645 vec[0].iov_base = (void*)&target;
646 vec[0].iov_len = sizeof(target);
647
648 got = recvmsg(sock, &msg, 0);
2aa47728
NC
649
650 if(got == 0)
651 break;
652 if(got < 0) {
808ad2d0
NC
653 where = "recv failed";
654 goto abort;
2aa47728
NC
655 }
656 if(got < sizeof(target)) {
808ad2d0
NC
657 where = "short recv";
658 goto abort;
2aa47728 659 }
bf357333 660
808ad2d0
NC
661 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
662 where = "no cmsg";
663 goto abort;
664 }
665 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
666 where = "wrong cmsg_len";
667 goto abort;
668 }
669 if(cmptr->cmsg_level != SOL_SOCKET) {
670 where = "wrong cmsg_level";
671 goto abort;
672 }
673 if(cmptr->cmsg_type != SCM_RIGHTS) {
674 where = "wrong cmsg_type";
675 goto abort;
676 }
bf357333
NC
677
678 got_fd = *(int*)CMSG_DATA(cmptr);
679 /* For our last little bit of trickery, put the file descriptor
680 back into Perl_debug_log, as if we never actually closed it
681 */
808ad2d0
NC
682 if(got_fd != debug_fd) {
683 if (dup2(got_fd, debug_fd) == -1) {
684 where = "dup2";
685 goto abort;
686 }
687 }
2aa47728 688 sv_dump(target);
bf357333 689
2aa47728
NC
690 PerlIO_flush(Perl_debug_log);
691
808ad2d0 692 got = write(sock, &success, sizeof(success));
2aa47728
NC
693
694 if(got < 0) {
808ad2d0
NC
695 where = "write failed";
696 goto abort;
2aa47728 697 }
808ad2d0
NC
698 if(got < sizeof(success)) {
699 where = "short write";
700 goto abort;
2aa47728
NC
701 }
702 }
703 _exit(0);
808ad2d0
NC
704 abort:
705 {
706 int send_errno = errno;
707 unsigned char length = (unsigned char) strlen(where);
708 struct iovec failure[3] = {
709 {(void*)&send_errno, sizeof(send_errno)},
710 {&length, 1},
711 {(void*)where, length}
712 };
713 int got = writev(sock, failure, 3);
714 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
715 in the parent if we try to read from the socketpair after the
716 child has exited, even if there was data to read.
717 So sleep a bit to give the parent a fighting chance of
718 reading the data. */
719 sleep(2);
720 _exit((got == -1) ? errno : 0);
721 }
bf357333 722 /* End of child. */
2aa47728 723 }
41e4abd8 724 PL_dumper_fd = fd[0];
2aa47728
NC
725 close(fd[1]);
726 }
727#endif
728
ff0cee69
PP
729 /* We must account for everything. */
730
731 /* Destroy the main CV and syntax tree */
37e77c23
FC
732 /* Set PL_curcop now, because destroying ops can cause new SVs
733 to be generated in Perl_pad_swipe, and when running with
734 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
735 op from which the filename structure member is copied. */
17fbfdf6 736 PL_curcop = &PL_compiling;
3280af22 737 if (PL_main_root) {
4e380990
DM
738 /* ensure comppad/curpad to refer to main's pad */
739 if (CvPADLIST(PL_main_cv)) {
740 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
741 }
3280af22 742 op_free(PL_main_root);
5f66b61c 743 PL_main_root = NULL;
a0d0e21e 744 }
5f66b61c 745 PL_main_start = NULL;
aac9d523
DM
746 /* note that PL_main_cv isn't usually actually freed at this point,
747 * due to the CvOUTSIDE refs from subs compiled within it. It will
748 * get freed once all the subs are freed in sv_clean_all(), for
749 * destruct_level > 0 */
3280af22 750 SvREFCNT_dec(PL_main_cv);
601f1833 751 PL_main_cv = NULL;
ca7b837b 752 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 753
13621cfb
NIS
754 /* Tell PerlIO we are about to tear things apart in case
755 we have layers which are using resources that should
756 be cleaned up now.
757 */
758
759 PerlIO_destruct(aTHX);
760
ddf23d4a
SM
761 /*
762 * Try to destruct global references. We do this first so that the
763 * destructors and destructees still exist. Some sv's might remain.
764 * Non-referenced objects are on their own.
765 */
766 sv_clean_objs();
8990e307 767
5cd24f17 768 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 769 SvREFCNT_dec(PL_warnhook);
a0714e2c 770 PL_warnhook = NULL;
3280af22 771 SvREFCNT_dec(PL_diehook);
a0714e2c 772 PL_diehook = NULL;
5cd24f17 773
4b556e6c 774 /* call exit list functions */
3280af22 775 while (PL_exitlistlen-- > 0)
acfe0abc 776 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 777
3280af22 778 Safefree(PL_exitlist);
4b556e6c 779
1c4916e5
CB
780 PL_exitlist = NULL;
781 PL_exitlistlen = 0;
782
a3e6e81e
NC
783 SvREFCNT_dec(PL_registered_mros);
784
551a8b83 785 /* jettison our possibly duplicated environment */
4b647fb0
DM
786 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
787 * so we certainly shouldn't free it here
788 */
2f42fcb0 789#ifndef PERL_MICRO
4b647fb0 790#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 791 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
792#ifdef USE_ITHREADS
793 /* only main thread can free environ[0] contents */
794 && PL_curinterp == aTHX
795#endif
796 )
797 {
551a8b83
JH
798 I32 i;
799
800 for (i = 0; environ[i]; i++)
4b420006 801 safesysfree(environ[i]);
0631ea03 802
4b420006
JH
803 /* Must use safesysfree() when working with environ. */
804 safesysfree(environ);
551a8b83
JH
805
806 environ = PL_origenviron;
807 }
808#endif
2f42fcb0 809#endif /* !PERL_MICRO */
551a8b83 810
30985c42
JH
811 if (destruct_level == 0) {
812
813 DEBUG_P(debprofdump());
814
815#if defined(PERLIO_LAYERS)
816 /* No more IO - including error messages ! */
817 PerlIO_cleanup(aTHX);
818#endif
819
820 CopFILE_free(&PL_compiling);
30985c42
JH
821
822 /* The exit() function will do everything that needs doing. */
823 return STATUS_EXIT;
824 }
825
5f8cb046
DM
826#ifdef USE_ITHREADS
827 /* the syntax tree is shared between clones
828 * so op_free(PL_main_root) only ReREFCNT_dec's
829 * REGEXPs in the parent interpreter
830 * we need to manually ReREFCNT_dec for the clones
831 */
0547a729
DM
832 {
833 I32 i = AvFILLp(PL_regex_padav);
834 SV **ary = AvARRAY(PL_regex_padav);
835
836 for (; i; i--) {
837 SvREFCNT_dec(ary[i]);
838 ary[i] = &PL_sv_undef;
839 }
840 }
5f8cb046
DM
841#endif
842
0547a729 843
ad64d0ec 844 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
845 PL_stashcache = NULL;
846
5f05dabc
PP
847 /* loosen bonds of global variables */
848
2f9285f8
DM
849 /* XXX can PL_parser still be non-null here? */
850 if(PL_parser && PL_parser->rsfp) {
851 (void)PerlIO_close(PL_parser->rsfp);
852 PL_parser->rsfp = NULL;
8ebc5c01
PP
853 }
854
84386e14
RGS
855 if (PL_minus_F) {
856 Safefree(PL_splitstr);
857 PL_splitstr = NULL;
858 }
859
8ebc5c01 860 /* switches */
3280af22
NIS
861 PL_minus_n = FALSE;
862 PL_minus_p = FALSE;
863 PL_minus_l = FALSE;
864 PL_minus_a = FALSE;
865 PL_minus_F = FALSE;
866 PL_doswitches = FALSE;
599cee73 867 PL_dowarn = G_WARN_OFF;
1a904fc8 868#ifdef PERL_SAWAMPERSAND
d3b97530 869 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 870#endif
3280af22
NIS
871 PL_unsafe = FALSE;
872
873 Safefree(PL_inplace);
bd61b366 874 PL_inplace = NULL;
a7cb1f99 875 SvREFCNT_dec(PL_patchlevel);
1e8125c6 876 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
877
878 if (PL_e_script) {
879 SvREFCNT_dec(PL_e_script);
a0714e2c 880 PL_e_script = NULL;
8ebc5c01
PP
881 }
882
bf9cdc68
RG
883 PL_perldb = 0;
884
8ebc5c01
PP
885 /* magical thingies */
886
e23d9e2f
CS
887 SvREFCNT_dec(PL_ofsgv); /* *, */
888 PL_ofsgv = NULL;
5f05dabc 889
7889fe52 890 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 891 PL_ors_sv = NULL;
8ebc5c01 892
3280af22 893 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 894 PL_rs = NULL;
dc92893f 895
d33b2eba 896 Safefree(PL_osname); /* $^O */
bd61b366 897 PL_osname = NULL;
5f05dabc 898
3280af22 899 SvREFCNT_dec(PL_statname);
a0714e2c
SS
900 PL_statname = NULL;
901 PL_statgv = NULL;
5f05dabc 902
8ebc5c01
PP
903 /* defgv, aka *_ should be taken care of elsewhere */
904
7d5ea4e7
GS
905 /* float buffer */
906 Safefree(PL_efloatbuf);
bd61b366 907 PL_efloatbuf = NULL;
7d5ea4e7
GS
908 PL_efloatsize = 0;
909
8ebc5c01 910 /* startup and shutdown function lists */
3280af22 911 SvREFCNT_dec(PL_beginav);
5a837c8f 912 SvREFCNT_dec(PL_beginav_save);
3280af22 913 SvREFCNT_dec(PL_endav);
7d30b5c4 914 SvREFCNT_dec(PL_checkav);
ece599bd 915 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
916 SvREFCNT_dec(PL_unitcheckav);
917 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 918 SvREFCNT_dec(PL_initav);
7d49f689
NC
919 PL_beginav = NULL;
920 PL_beginav_save = NULL;
921 PL_endav = NULL;
922 PL_checkav = NULL;
923 PL_checkav_save = NULL;
3c10abe3
AG
924 PL_unitcheckav = NULL;
925 PL_unitcheckav_save = NULL;
7d49f689 926 PL_initav = NULL;
5618dfe8 927
8ebc5c01 928 /* shortcuts just get cleared */
a0714e2c
SS
929 PL_envgv = NULL;
930 PL_incgv = NULL;
931 PL_hintgv = NULL;
932 PL_errgv = NULL;
933 PL_argvgv = NULL;
934 PL_argvoutgv = NULL;
935 PL_stdingv = NULL;
936 PL_stderrgv = NULL;
937 PL_last_in_gv = NULL;
938 PL_replgv = NULL;
939 PL_DBgv = NULL;
940 PL_DBline = NULL;
941 PL_DBsub = NULL;
942 PL_DBsingle = NULL;
943 PL_DBtrace = NULL;
944 PL_DBsignal = NULL;
601f1833 945 PL_DBcv = NULL;
7d49f689 946 PL_dbargs = NULL;
5c284bb0 947 PL_debstash = NULL;
8ebc5c01 948
7a1c5554 949 SvREFCNT_dec(PL_argvout_stack);
7d49f689 950 PL_argvout_stack = NULL;
8ebc5c01 951
5c831c24 952 SvREFCNT_dec(PL_modglobal);
5c284bb0 953 PL_modglobal = NULL;
5c831c24 954 SvREFCNT_dec(PL_preambleav);
7d49f689 955 PL_preambleav = NULL;
5c831c24 956 SvREFCNT_dec(PL_subname);
a0714e2c 957 PL_subname = NULL;
ca0c25f6 958#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 959 SvREFCNT_dec(PL_pidstatus);
5c284bb0 960 PL_pidstatus = NULL;
ca0c25f6 961#endif
5c831c24 962 SvREFCNT_dec(PL_toptarget);
a0714e2c 963 PL_toptarget = NULL;
5c831c24 964 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
965 PL_bodytarget = NULL;
966 PL_formtarget = NULL;
5c831c24 967
d33b2eba 968 /* free locale stuff */
b9582b6a 969#ifdef USE_LOCALE_COLLATE
d33b2eba 970 Safefree(PL_collation_name);
bd61b366 971 PL_collation_name = NULL;
b9582b6a 972#endif
d33b2eba 973
b9582b6a 974#ifdef USE_LOCALE_NUMERIC
d33b2eba 975 Safefree(PL_numeric_name);
bd61b366 976 PL_numeric_name = NULL;
a453c169 977 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 978 PL_numeric_radix_sv = NULL;
b9582b6a 979#endif
d33b2eba 980
9c0b6888
KW
981 /* clear character classes */
982 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
983 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
984 PL_utf8_swash_ptrs[i] = NULL;
985 }
5c831c24
GS
986 SvREFCNT_dec(PL_utf8_mark);
987 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 988 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 989 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 990 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
991 SvREFCNT_dec(PL_utf8_idstart);
992 SvREFCNT_dec(PL_utf8_idcont);
2726813d 993 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c
SS
994 PL_utf8_mark = NULL;
995 PL_utf8_toupper = NULL;
996 PL_utf8_totitle = NULL;
997 PL_utf8_tolower = NULL;
998 PL_utf8_tofold = NULL;
999 PL_utf8_idstart = NULL;
1000 PL_utf8_idcont = NULL;
2726813d 1001 PL_utf8_foldclosures = NULL;
86f72d56 1002 for (i = 0; i < POSIX_CC_COUNT; i++) {
30f9bdb0
KW
1003 SvREFCNT_dec(PL_Posix_ptrs[i]);
1004 PL_Posix_ptrs[i] = NULL;
1005
86f72d56
KW
1006 SvREFCNT_dec(PL_L1Posix_ptrs[i]);
1007 PL_L1Posix_ptrs[i] = NULL;
cac6e0ca
KW
1008
1009 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1010 PL_XPosix_ptrs[i] = NULL;
86f72d56 1011 }
5c831c24 1012
971a9dd3 1013 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1014 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1015 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1016 cophh_free(CopHINTHASH_get(&PL_compiling));
1017 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1018 CopFILE_free(&PL_compiling);
5c831c24 1019
a0d0e21e 1020 /* Prepare to destruct main symbol table. */
5f05dabc 1021
3280af22 1022 hv = PL_defstash;
ca556bcd
DM
1023 /* break ref loop *:: <=> %:: */
1024 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1025 PL_defstash = 0;
a0d0e21e 1026 SvREFCNT_dec(hv);
5c831c24 1027 SvREFCNT_dec(PL_curstname);
a0714e2c 1028 PL_curstname = NULL;
a0d0e21e 1029
5a844595
GS
1030 /* clear queued errors */
1031 SvREFCNT_dec(PL_errors);
a0714e2c 1032 PL_errors = NULL;
5a844595 1033
dd69841b
BB
1034 SvREFCNT_dec(PL_isarev);
1035
a0d0e21e 1036 FREETMPS;
9b387841 1037 if (destruct_level >= 2) {
3280af22 1038 if (PL_scopestack_ix != 0)
9b387841
NC
1039 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1040 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1041 (long)PL_scopestack_ix);
3280af22 1042 if (PL_savestack_ix != 0)
9b387841
NC
1043 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1044 "Unbalanced saves: %ld more saves than restores\n",
1045 (long)PL_savestack_ix);
3280af22 1046 if (PL_tmps_floor != -1)
9b387841
NC
1047 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1048 (long)PL_tmps_floor + 1);
a0d0e21e 1049 if (cxstack_ix != -1)
9b387841
NC
1050 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1051 (long)cxstack_ix + 1);
a0d0e21e 1052 }
8990e307 1053
0547a729
DM
1054#ifdef USE_ITHREADS
1055 SvREFCNT_dec(PL_regex_padav);
1056 PL_regex_padav = NULL;
1057 PL_regex_pad = NULL;
1058#endif
1059
776df701 1060#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1061 /* the entries in this list are allocated via SV PVX's, so get freed
1062 * in sv_clean_all */
1063 Safefree(PL_my_cxt_list);
776df701 1064#endif
57bb2458 1065
8990e307 1066 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1067
1068 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1069 while (sv_clean_all() > 2)
5226ed68
JH
1070 ;
1071
23083432
FC
1072#ifdef USE_ITHREADS
1073 Safefree(PL_stashpad); /* must come after sv_clean_all */
1074#endif
1075
d4777f27
GS
1076 AvREAL_off(PL_fdpid); /* no surviving entries */
1077 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1078 PL_fdpid = NULL;
d33b2eba 1079
6c644e78
GS
1080#ifdef HAVE_INTERP_INTERN
1081 sys_intern_clear();
1082#endif
1083
6e72f9df
PP
1084 /* Destruct the global string table. */
1085 {
1086 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1087 * so that sv_free() won't fail on them.
80459961
NC
1088 * Now that the global string table is using a single hunk of memory
1089 * for both HE and HEK, we either need to explicitly unshare it the
1090 * correct way, or actually free things here.
6e72f9df 1091 */
80459961
NC
1092 I32 riter = 0;
1093 const I32 max = HvMAX(PL_strtab);
c4420975 1094 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1095 HE *hent = array[0];
1096
6e72f9df 1097 for (;;) {
0453d815 1098 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1099 HE * const next = HeNEXT(hent);
9014280d 1100 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1101 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1102 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1103 Safefree(hent);
1104 hent = next;
6e72f9df
PP
1105 }
1106 if (!hent) {
1107 if (++riter > max)
1108 break;
1109 hent = array[riter];
1110 }
1111 }
80459961
NC
1112
1113 Safefree(array);
1114 HvARRAY(PL_strtab) = 0;
1115 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1116 }
3280af22 1117 SvREFCNT_dec(PL_strtab);
6e72f9df 1118
e652bb2f 1119#ifdef USE_ITHREADS
c21d1a0f 1120 /* free the pointer tables used for cloning */
a0739874 1121 ptr_table_free(PL_ptr_table);
bf9cdc68 1122 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1123#endif
a0739874 1124
d33b2eba
GS
1125 /* free special SVs */
1126
1127 SvREFCNT(&PL_sv_yes) = 0;
1128 sv_clear(&PL_sv_yes);
1129 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1130 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1131
1132 SvREFCNT(&PL_sv_no) = 0;
1133 sv_clear(&PL_sv_no);
1134 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1135 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1136
9f375a43
DM
1137 {
1138 int i;
1139 for (i=0; i<=2; i++) {
1140 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1141 sv_clear(PERL_DEBUG_PAD(i));
1142 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1143 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1144 }
1145 }
1146
0453d815 1147 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1148 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1149
eba0f806
DM
1150#ifdef DEBUG_LEAKING_SCALARS
1151 if (PL_sv_count != 0) {
1152 SV* sva;
1153 SV* sv;
eb578fdb 1154 SV* svend;
eba0f806 1155
ad64d0ec 1156 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1157 svend = &sva[SvREFCNT(sva)];
1158 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1159 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1160 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1161 " flags=0x%"UVxf
fd0854ff 1162 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1163 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1164 "serial %"UVuf"\n",
574b8821
NC
1165 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1166 pTHX__VALUE,
fd0854ff
DM
1167 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1168 sv->sv_debug_line,
1169 sv->sv_debug_inpad ? "for" : "by",
1170 sv->sv_debug_optype ?
1171 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1172 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1173 sv->sv_debug_serial
fd0854ff 1174 );
2aa47728 1175#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1176 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1177#endif
eba0f806
DM
1178 }
1179 }
1180 }
1181 }
2aa47728
NC
1182#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1183 {
1184 int status;
1185 fd_set rset;
1186 /* Wait for up to 4 seconds for child to terminate.
1187 This seems to be the least effort way of timing out on reaping
1188 its exit status. */
1189 struct timeval waitfor = {4, 0};
41e4abd8 1190 int sock = PL_dumper_fd;
2aa47728
NC
1191
1192 shutdown(sock, 1);
1193 FD_ZERO(&rset);
1194 FD_SET(sock, &rset);
1195 select(sock + 1, &rset, NULL, NULL, &waitfor);
1196 waitpid(child, &status, WNOHANG);
1197 close(sock);
1198 }
1199#endif
eba0f806 1200#endif
77abb4c6
NC
1201#ifdef DEBUG_LEAKING_SCALARS_ABORT
1202 if (PL_sv_count)
1203 abort();
1204#endif
bf9cdc68 1205 PL_sv_count = 0;
eba0f806 1206
56a2bab7 1207#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1208 /* No more IO - including error messages ! */
1209 PerlIO_cleanup(aTHX);
1210#endif
1211
9f4bd222 1212 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1213 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1214 for no arg - and will try and SvREFCNT_dec it.
1215 */
1216 SvREFCNT(&PL_sv_undef) = 0;
1217 SvREADONLY_off(&PL_sv_undef);
1218
3280af22 1219 Safefree(PL_origfilename);
bd61b366 1220 PL_origfilename = NULL;
43c5f42d 1221 Safefree(PL_reg_curpm);
82ba1be6 1222 Safefree(PL_reg_poscache);
dd28f7bb 1223 free_tied_hv_pool();
3280af22 1224 Safefree(PL_op_mask);
cf36064f 1225 Safefree(PL_psig_name);
bf9cdc68 1226 PL_psig_name = (SV**)NULL;
d525a7b2 1227 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1228 {
1229 /* We need to NULL PL_psig_pend first, so that
1230 signal handlers know not to use it */
1231 int *psig_save = PL_psig_pend;
1232 PL_psig_pend = (int*)NULL;
1233 Safefree(psig_save);
1234 }
6e72f9df 1235 nuke_stacks();
284167a5
SM
1236 TAINTING_set(FALSE);
1237 TAINT_WARN_set(FALSE);
3280af22 1238 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1239 PL_debug = 0;
ac27b0f5 1240
a0d0e21e 1241 DEBUG_P(debprofdump());
d33b2eba 1242
e5dd39fc 1243#ifdef USE_REENTRANT_API
10bc17b6 1244 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1245#endif
1246
612f20c3
GS
1247 sv_free_arenas();
1248
5d9a96ca
DM
1249 while (PL_regmatch_slab) {
1250 regmatch_slab *s = PL_regmatch_slab;
1251 PL_regmatch_slab = PL_regmatch_slab->next;
1252 Safefree(s);
1253 }
1254
fc36a67e
PP
1255 /* As the absolutely last thing, free the non-arena SV for mess() */
1256
3280af22 1257 if (PL_mess_sv) {
f350b448
NC
1258 /* we know that type == SVt_PVMG */
1259
9c63abab 1260 /* it could have accumulated taint magic */
f350b448
NC
1261 MAGIC* mg;
1262 MAGIC* moremagic;
1263 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1264 moremagic = mg->mg_moremagic;
1265 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1266 && mg->mg_len >= 0)
1267 Safefree(mg->mg_ptr);
1268 Safefree(mg);
9c63abab 1269 }
f350b448 1270
fc36a67e 1271 /* we know that type >= SVt_PV */
8bd4d4c5 1272 SvPV_free(PL_mess_sv);
3280af22
NIS
1273 Safefree(SvANY(PL_mess_sv));
1274 Safefree(PL_mess_sv);
a0714e2c 1275 PL_mess_sv = NULL;
fc36a67e 1276 }
37038d91 1277 return STATUS_EXIT;
79072805
LW
1278}
1279
954c1994
GS
1280/*
1281=for apidoc perl_free
1282
1283Releases a Perl interpreter. See L<perlembed>.
1284
1285=cut
1286*/
1287
79072805 1288void
0cb96387 1289perl_free(pTHXx)
79072805 1290{
5174512c
NC
1291 dVAR;
1292
7918f24d
NC
1293 PERL_ARGS_ASSERT_PERL_FREE;
1294
c301d606
DM
1295 if (PL_veto_cleanup)
1296 return;
1297
7cb608b5 1298#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1299 {
1300 /*
1301 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1302 * value as we're probably hunting memory leaks then
1303 */
36e77d41 1304 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1305 const U32 old_debug = PL_debug;
55ef9aae
MHM
1306 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1307 thread at thread exit. */
4fd0a9b8
NC
1308 if (DEBUG_m_TEST) {
1309 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1310 "free this thread's memory\n");
1311 PL_debug &= ~ DEBUG_m_FLAG;
1312 }
55ef9aae
MHM
1313 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1314 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1315 PL_debug = old_debug;
55ef9aae
MHM
1316 }
1317 }
7cb608b5
NC
1318#endif
1319
acfe0abc 1320#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1321# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1322 {
acfe0abc 1323# ifdef NETWARE
7af12a34 1324 void *host = nw_internal_host;
acfe0abc 1325# else
7af12a34 1326 void *host = w32_internal_host;
acfe0abc 1327# endif
7af12a34 1328 PerlMem_free(aTHXx);
acfe0abc 1329# ifdef NETWARE
7af12a34 1330 nw_delete_internal_host(host);
acfe0abc 1331# else
7af12a34 1332 win32_delete_internal_host(host);
acfe0abc 1333# endif
7af12a34 1334 }
1c0ca838
GS
1335# else
1336 PerlMem_free(aTHXx);
1337# endif
acfe0abc
GS
1338#else
1339 PerlMem_free(aTHXx);
76e3520e 1340#endif
79072805
LW
1341}
1342
b7f7fff6 1343#if defined(USE_ITHREADS)
aebd1ac7
GA
1344/* provide destructors to clean up the thread key when libperl is unloaded */
1345#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1346
826955bd 1347#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1348#pragma fini "perl_fini"
666ad1ec
GA
1349#elif defined(__sun) && !defined(__GNUC__)
1350#pragma fini (perl_fini)
aebd1ac7
GA
1351#endif
1352
0dbb1585
AL
1353static void
1354#if defined(__GNUC__)
1355__attribute__((destructor))
aebd1ac7 1356#endif
de009b76 1357perl_fini(void)
aebd1ac7 1358{
27da23d5 1359 dVAR;
c301d606 1360 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1361 FREE_THREAD_KEY;
1362}
1363
1364#endif /* WIN32 */
1365#endif /* THREADS */
1366
4b556e6c 1367void
864dbfa3 1368Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1369{
97aff369 1370 dVAR;
3280af22
NIS
1371 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1372 PL_exitlist[PL_exitlistlen].fn = fn;
1373 PL_exitlist[PL_exitlistlen].ptr = ptr;
1374 ++PL_exitlistlen;
4b556e6c
JD
1375}
1376
b7975bdd
NC
1377STATIC void
1378S_set_caret_X(pTHX) {
97aff369 1379 dVAR;
fafc274c 1380 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1381 if (tmpgv) {
0f1723e1 1382 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1383#if defined(OS2)
1384 sv_setpv(caret_x, os2_execname(aTHX));
1385#else
2982a345
NC
1386# ifdef USE_KERN_PROC_PATHNAME
1387 size_t size = 0;
1388 int mib[4];
1389 mib[0] = CTL_KERN;
1390 mib[1] = KERN_PROC;
1391 mib[2] = KERN_PROC_PATHNAME;
1392 mib[3] = -1;
1393
1394 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1395 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1396 sv_grow(caret_x, size);
1397
1398 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1399 && size > 2) {
1400 SvPOK_only(caret_x);
1401 SvCUR_set(caret_x, size - 1);
1402 SvTAINT(caret_x);
1403 return;
1404 }
1405 }
ae60cb46
NC
1406# elif defined(USE_NSGETEXECUTABLEPATH)
1407 char buf[1];
1408 uint32_t size = sizeof(buf);
ae60cb46
NC
1409
1410 _NSGetExecutablePath(buf, &size);
1411 if (size < MAXPATHLEN * MAXPATHLEN) {
1412 sv_grow(caret_x, size);
1413 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1414 char *const tidied = realpath(SvPVX(caret_x), NULL);
1415 if (tidied) {
1416 sv_setpv(caret_x, tidied);
1417 free(tidied);
1418 } else {
1419 SvPOK_only(caret_x);
1420 SvCUR_set(caret_x, size);
1421 }
1422 return;
1423 }
1424 }
2982a345 1425# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1426 char buf[MAXPATHLEN];
1427 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1428
1429 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1430 includes a spurious NUL which will cause $^X to fail in system
1431 or backticks (this will prevent extensions from being built and
1432 many tests from working). readlink is not meant to add a NUL.
1433 Normal readlink works fine.
1434 */
1435 if (len > 0 && buf[len-1] == '\0') {
1436 len--;
1437 }
1438
1439 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1440 returning the text "unknown" from the readlink rather than the path
1441 to the executable (or returning an error from the readlink). Any
1442 valid path has a '/' in it somewhere, so use that to validate the
1443 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1444 */
1445 if (len > 0 && memchr(buf, '/', len)) {
1446 sv_setpvn(caret_x, buf, len);
82552a95 1447 return;
700dd4f8 1448 }
82552a95
NC
1449# endif
1450 /* Fallback to this: */
0f1723e1 1451 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1452#endif
b7975bdd
NC
1453 }
1454}
1455
954c1994
GS
1456/*
1457=for apidoc perl_parse
1458
1459Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1460
1461=cut
1462*/
1463
03d9f026
FC
1464#define SET_CURSTASH(newstash) \
1465 if (PL_curstash != newstash) { \
1466 SvREFCNT_dec(PL_curstash); \
1467 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1468 }
1469
79072805 1470int
0cb96387 1471perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1472{
27da23d5 1473 dVAR;
6224f72b 1474 I32 oldscope;
6224f72b 1475 int ret;
db36c5a1 1476 dJMPENV;
8d063cd8 1477
7918f24d
NC
1478 PERL_ARGS_ASSERT_PERL_PARSE;
1479#ifndef MULTIPLICITY
ed6c66dd 1480 PERL_UNUSED_ARG(my_perl);
7918f24d 1481#endif
7dc86639 1482#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1483 {
7dc86639
YO
1484 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1485
1486 if (s && (atoi(s) == 1)) {
1487 unsigned char *seed= PERL_HASH_SEED;
1488 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1489 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1490 while (seed < seed_end) {
1491 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1492 }
6a5b4183
YO
1493#ifdef PERL_HASH_RANDOMIZE_KEYS
1494 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1495 PL_HASH_RAND_BITS_ENABLED,
1496 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1497#endif
7dc86639
YO
1498 PerlIO_printf(Perl_debug_log, "\n");
1499 }
b0891165
JH
1500 }
1501#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1502 PL_origargc = argc;
e2975953 1503 PL_origargv = argv;
a0d0e21e 1504
a2722ac9
GA
1505 if (PL_origalen != 0) {
1506 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1507 }
1508 else {
3cb9023d
JH
1509 /* Set PL_origalen be the sum of the contiguous argv[]
1510 * elements plus the size of the env in case that it is
e9137a8e 1511 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1512 * as the maximum modifiable length of $0. In the worst case
1513 * the area we are able to modify is limited to the size of
43c32782 1514 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1515 * --jhi */
e1ec3a88 1516 const char *s = NULL;
54bfe034 1517 int i;
1b6737cc 1518 const UV mask =
7d8e7db3 1519 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1520 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1521 const UV aligned =
43c32782
JH
1522 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1523
1524 /* See if all the arguments are contiguous in memory. Note
1525 * that 'contiguous' is a loose term because some platforms
1526 * align the argv[] and the envp[]. If the arguments look
1527 * like non-aligned, assume that they are 'strictly' or
1528 * 'traditionally' contiguous. If the arguments look like
1529 * aligned, we just check that they are within aligned
1530 * PTRSIZE bytes. As long as no system has something bizarre
1531 * like the argv[] interleaved with some other data, we are
1532 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1533 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1534 while (*s) s++;
1535 for (i = 1; i < PL_origargc; i++) {
1536 if ((PL_origargv[i] == s + 1
43c32782 1537#ifdef OS2
c8941eeb 1538 || PL_origargv[i] == s + 2
43c32782 1539#endif
c8941eeb
JH
1540 )
1541 ||
1542 (aligned &&
1543 (PL_origargv[i] > s &&
1544 PL_origargv[i] <=
1545 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1546 )
1547 {
1548 s = PL_origargv[i];
1549 while (*s) s++;
1550 }
1551 else
1552 break;
54bfe034 1553 }
54bfe034 1554 }
a4a109c2
JD
1555
1556#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1557 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1558 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1559 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1560 ||
1561 (aligned &&
1562 (PL_origenviron[0] > s &&
1563 PL_origenviron[0] <=
1564 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1565 )
1566 {
9d419b5f 1567#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1568 s = PL_origenviron[0];
1569 while (*s) s++;
1570#endif
bd61b366 1571 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1572 /* Force copy of environment. */
1573 for (i = 1; PL_origenviron[i]; i++) {
1574 if (PL_origenviron[i] == s + 1
1575 ||
1576 (aligned &&
1577 (PL_origenviron[i] > s &&
1578 PL_origenviron[i] <=
1579 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1580 )
1581 {
1582 s = PL_origenviron[i];
1583 while (*s) s++;
1584 }
1585 else
1586 break;
54bfe034 1587 }
43c32782 1588 }
54bfe034 1589 }
a4a109c2
JD
1590#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1591
2d2af554 1592 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1593 }
1594
3280af22 1595 if (PL_do_undump) {
a0d0e21e
LW
1596
1597 /* Come here if running an undumped a.out. */
1598
3280af22
NIS
1599 PL_origfilename = savepv(argv[0]);
1600 PL_do_undump = FALSE;
a0d0e21e 1601 cxstack_ix = -1; /* start label stack again */
748a9306 1602 init_ids();
284167a5 1603 assert (!TAINT_get);
b7975bdd
NC
1604 TAINT;
1605 S_set_caret_X(aTHX);
1606 TAINT_NOT;
a0d0e21e
LW
1607 init_postdump_symbols(argc,argv,env);
1608 return 0;
1609 }
1610
3280af22 1611 if (PL_main_root) {
3280af22 1612 op_free(PL_main_root);
5f66b61c 1613 PL_main_root = NULL;
ff0cee69 1614 }
5f66b61c 1615 PL_main_start = NULL;
3280af22 1616 SvREFCNT_dec(PL_main_cv);
601f1833 1617 PL_main_cv = NULL;
79072805 1618
3280af22
NIS
1619 time(&PL_basetime);
1620 oldscope = PL_scopestack_ix;
599cee73 1621 PL_dowarn = G_WARN_OFF;
f86702cc 1622
14dd3ad8 1623 JMPENV_PUSH(ret);
6224f72b 1624 switch (ret) {
312caa8e 1625 case 0:
14dd3ad8 1626 parse_body(env,xsinit);
9ebf26ad 1627 if (PL_unitcheckav) {
3c10abe3 1628 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1629 }
1630 if (PL_checkav) {
ca7b837b 1631 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1632 call_list(oldscope, PL_checkav);
9ebf26ad 1633 }
14dd3ad8
GS
1634 ret = 0;
1635 break;
6224f72b
GS
1636 case 1:
1637 STATUS_ALL_FAILURE;
1638 /* FALL THROUGH */
1639 case 2:
1640 /* my_exit() was called */
3280af22 1641 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1642 LEAVE;
1643 FREETMPS;
03d9f026 1644 SET_CURSTASH(PL_defstash);
9ebf26ad 1645 if (PL_unitcheckav) {
3c10abe3 1646 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1647 }
1648 if (PL_checkav) {
ca7b837b 1649 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1650 call_list(oldscope, PL_checkav);
9ebf26ad 1651 }
37038d91 1652 ret = STATUS_EXIT;
14dd3ad8 1653 break;
6224f72b 1654 case 3:
bf49b057 1655 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1656 ret = 1;
1657 break;
6224f72b 1658 }
14dd3ad8
GS
1659 JMPENV_POP;
1660 return ret;
1661}
1662
4a5df386
NC
1663/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1664 miniperl, and we need to see those flags reflected in the values here. */
1665
1666/* What this returns is subject to change. Use the public interface in Config.
1667 */
1668static void
1669S_Internals_V(pTHX_ CV *cv)
1670{
1671 dXSARGS;
1672#ifdef LOCAL_PATCH_COUNT
1673 const int local_patch_count = LOCAL_PATCH_COUNT;
1674#else
1675 const int local_patch_count = 0;
1676#endif
2dc296d2 1677 const int entries = 3 + local_patch_count;
4a5df386 1678 int i;
fe1c5936 1679 static const char non_bincompat_options[] =
4a5df386
NC
1680# ifdef DEBUGGING
1681 " DEBUGGING"
1682# endif
1683# ifdef NO_MATHOMS
0d311fbe 1684 " NO_MATHOMS"
4a5df386 1685# endif
59b86f4b
DM
1686# ifdef NO_HASH_SEED
1687 " NO_HASH_SEED"
1688# endif
4a5df386
NC
1689# ifdef PERL_DISABLE_PMC
1690 " PERL_DISABLE_PMC"
1691# endif
1692# ifdef PERL_DONT_CREATE_GVSV
1693 " PERL_DONT_CREATE_GVSV"
1694# endif
9a044a43
NC
1695# ifdef PERL_EXTERNAL_GLOB
1696 " PERL_EXTERNAL_GLOB"
1697# endif
59b86f4b
DM
1698# ifdef PERL_HASH_FUNC_SIPHASH
1699 " PERL_HASH_FUNC_SIPHASH"
1700# endif
1701# ifdef PERL_HASH_FUNC_SDBM
1702 " PERL_HASH_FUNC_SDBM"
1703# endif
1704# ifdef PERL_HASH_FUNC_DJB2
1705 " PERL_HASH_FUNC_DJB2"
1706# endif
1707# ifdef PERL_HASH_FUNC_SUPERFAST
1708 " PERL_HASH_FUNC_SUPERFAST"
1709# endif
1710# ifdef PERL_HASH_FUNC_MURMUR3
1711 " PERL_HASH_FUNC_MURMUR3"
1712# endif
1713# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1714 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1715# endif
1716# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1717 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1718# endif
1719# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1720 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1721# endif
4a5df386
NC
1722# ifdef PERL_IS_MINIPERL
1723 " PERL_IS_MINIPERL"
1724# endif
1725# ifdef PERL_MALLOC_WRAP
1726 " PERL_MALLOC_WRAP"
1727# endif
1728# ifdef PERL_MEM_LOG
1729 " PERL_MEM_LOG"
1730# endif
1731# ifdef PERL_MEM_LOG_NOIMPL
1732 " PERL_MEM_LOG_NOIMPL"
1733# endif
2542212d
DM
1734# ifdef PERL_NEW_COPY_ON_WRITE
1735 " PERL_NEW_COPY_ON_WRITE"
1736# endif
59b86f4b
DM
1737# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1738 " PERL_PERTURB_KEYS_DETERMINISTIC"
1739# endif
1740# ifdef PERL_PERTURB_KEYS_DISABLED
1741 " PERL_PERTURB_KEYS_DISABLED"
1742# endif
1743# ifdef PERL_PERTURB_KEYS_RANDOM
1744 " PERL_PERTURB_KEYS_RANDOM"
1745# endif
c3cf41ec
NC
1746# ifdef PERL_PRESERVE_IVUV
1747 " PERL_PRESERVE_IVUV"
1748# endif
c051e30b
NC
1749# ifdef PERL_RELOCATABLE_INCPUSH
1750 " PERL_RELOCATABLE_INCPUSH"
1751# endif
4a5df386
NC
1752# ifdef PERL_USE_DEVEL
1753 " PERL_USE_DEVEL"
1754# endif
1755# ifdef PERL_USE_SAFE_PUTENV
1756 " PERL_USE_SAFE_PUTENV"
1757# endif
a3749cf3
NC
1758# ifdef UNLINK_ALL_VERSIONS
1759 " UNLINK_ALL_VERSIONS"
1760# endif
de618ee4
NC
1761# ifdef USE_ATTRIBUTES_FOR_PERLIO
1762 " USE_ATTRIBUTES_FOR_PERLIO"
1763# endif
4a5df386
NC
1764# ifdef USE_FAST_STDIO
1765 " USE_FAST_STDIO"
1766# endif
59b86f4b
DM
1767# ifdef USE_HASH_SEED_EXPLICIT
1768 " USE_HASH_SEED_EXPLICIT"
1769# endif
98548bdf
NC
1770# ifdef USE_LOCALE
1771 " USE_LOCALE"
1772# endif
98548bdf
NC
1773# ifdef USE_LOCALE_CTYPE
1774 " USE_LOCALE_CTYPE"
1775# endif
5a8d8935
NC
1776# ifdef USE_PERL_ATOF
1777 " USE_PERL_ATOF"
1778# endif
0d311fbe
NC
1779# ifdef USE_SITECUSTOMIZE
1780 " USE_SITECUSTOMIZE"
1781# endif
4a5df386
NC
1782 ;
1783 PERL_UNUSED_ARG(cv);
1784 PERL_UNUSED_ARG(items);
1785
1786 EXTEND(SP, entries);
1787
1788 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1789 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1790 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1791
1792#ifdef __DATE__
1793# ifdef __TIME__
1794 PUSHs(Perl_newSVpvn_flags(aTHX_
1795 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1796 SVs_TEMP));
1797# else
1798 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1799 SVs_TEMP));
1800# endif
1801#else
1802 PUSHs(&PL_sv_undef);
1803#endif
1804
4a5df386
NC
1805 for (i = 1; i <= local_patch_count; i++) {
1806 /* This will be an undef, if PL_localpatches[i] is NULL. */
1807 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1808 }
1809
1810 XSRETURN(entries);
1811}
1812
be71fc8f
NC
1813#define INCPUSH_UNSHIFT 0x01
1814#define INCPUSH_ADD_OLD_VERS 0x02
1815#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1816#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1817#define INCPUSH_NOT_BASEDIR 0x10
1818#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1819#define INCPUSH_ADD_SUB_DIRS \
1820 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1821
312caa8e 1822STATIC void *
14dd3ad8 1823S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1824{
27da23d5 1825 dVAR;
2f9285f8 1826 PerlIO *rsfp;
312caa8e 1827 int argc = PL_origargc;
8f42b153 1828 char **argv = PL_origargv;
e1ec3a88 1829 const char *scriptname = NULL;
312caa8e 1830 VOL bool dosearch = FALSE;
eb578fdb 1831 char c;
737c24fc 1832 bool doextract = FALSE;
bd61b366 1833 const char *cddir = NULL;
ab019eaa 1834#ifdef USE_SITECUSTOMIZE
20ef40cf 1835 bool minus_f = FALSE;
ab019eaa 1836#endif
95670bde 1837 SV *linestr_sv = NULL;
5486870f 1838 bool add_read_e_script = FALSE;
87606032 1839 U32 lex_start_flags = 0;
009d90df 1840
ca7b837b 1841 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1842
6224f72b 1843 init_main_stash();
54310121 1844
c7030b81
NC
1845 {
1846 const char *s;
6224f72b
GS
1847 for (argc--,argv++; argc > 0; argc--,argv++) {
1848 if (argv[0][0] != '-' || !argv[0][1])
1849 break;
6224f72b
GS
1850 s = argv[0]+1;
1851 reswitch:
47f56822 1852 switch ((c = *s)) {
729a02f2 1853 case 'C':
1d5472a9
GS
1854#ifndef PERL_STRICT_CR
1855 case '\r':
1856#endif
6224f72b
GS
1857 case ' ':
1858 case '0':
1859 case 'F':
1860 case 'a':
1861 case 'c':
1862 case 'd':
1863 case 'D':
1864 case 'h':
1865 case 'i':
1866 case 'l':
1867 case 'M':
1868 case 'm':
1869 case 'n':
1870 case 'p':
1871 case 's':
1872 case 'u':
1873 case 'U':
1874 case 'v':
599cee73
PM
1875 case 'W':
1876 case 'X':
6224f72b 1877 case 'w':
97bd5664 1878 if ((s = moreswitches(s)))
6224f72b
GS
1879 goto reswitch;
1880 break;
33b78306 1881
1dbad523 1882 case 't':
284167a5
SM
1883#if SILENT_NO_TAINT_SUPPORT
1884 /* silently ignore */
1885#elif NO_TAINT_SUPPORT
1886 Perl_croak("This perl was compiled without taint support. "
1887 "Cowardly refusing to run with -t or -T flags");
1888#else
22f7c9c9 1889 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1890 if( !TAINTING_get ) {
1891 TAINT_WARN_set(TRUE);
1892 TAINTING_set(TRUE);
317ea90d 1893 }
284167a5 1894#endif
317ea90d
MS
1895 s++;
1896 goto reswitch;
6224f72b 1897 case 'T':
284167a5
SM
1898#if SILENT_NO_TAINT_SUPPORT
1899 /* silently ignore */
1900#elif NO_TAINT_SUPPORT
1901 Perl_croak("This perl was compiled without taint support. "
1902 "Cowardly refusing to run with -t or -T flags");
1903#else
22f7c9c9 1904 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1905 TAINTING_set(TRUE);
1906 TAINT_WARN_set(FALSE);
1907#endif
6224f72b
GS
1908 s++;
1909 goto reswitch;
f86702cc 1910
bc9b29db
RH
1911 case 'E':
1912 PL_minus_E = TRUE;
1913 /* FALL THROUGH */
6224f72b 1914 case 'e':
f20b2998 1915 forbid_setid('e', FALSE);
3280af22 1916 if (!PL_e_script) {
396482e1 1917 PL_e_script = newSVpvs("");
5486870f 1918 add_read_e_script = TRUE;
6224f72b
GS
1919 }
1920 if (*++s)
3280af22 1921 sv_catpv(PL_e_script, s);
6224f72b 1922 else if (argv[1]) {
3280af22 1923 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1924 argc--,argv++;
1925 }
1926 else
47f56822 1927 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1928 sv_catpvs(PL_e_script, "\n");
6224f72b 1929 break;
afe37c7d 1930
20ef40cf 1931 case 'f':
f5542d3a 1932#ifdef USE_SITECUSTOMIZE
20ef40cf 1933 minus_f = TRUE;
f5542d3a 1934#endif
20ef40cf
GA
1935 s++;
1936 goto reswitch;
1937
6224f72b 1938 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1939 forbid_setid('I', FALSE);
bd61b366 1940 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1941 argc--,argv++;
1942 }
6224f72b 1943 if (s && *s) {
0df16ed7 1944 STRLEN len = strlen(s);
55b4bc1c 1945 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1946 }
1947 else
a67e862a 1948 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1949 break;
6224f72b 1950 case 'S':
f20b2998 1951 forbid_setid('S', FALSE);
6224f72b
GS
1952 dosearch = TRUE;
1953 s++;
1954 goto reswitch;
1955 case 'V':
7edfd0ef
NC
1956 {
1957 SV *opts_prog;
1958
7edfd0ef 1959 if (*++s != ':') {
37ca4a5b 1960 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1961 }
1962 else {
1963 ++s;
1964 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1965 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1966 0, s, 0);
1967 s += strlen(s);
1968 }
37ca4a5b 1969 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1970 /* don't look for script or read stdin */
1971 scriptname = BIT_BUCKET;
1972 goto reswitch;
6224f72b 1973 }
6224f72b 1974 case 'x':
737c24fc 1975 doextract = TRUE;
6224f72b 1976 s++;
304334da 1977 if (*s)
f4c556ac 1978 cddir = s;
6224f72b
GS
1979 break;
1980 case 0:
1981 break;
1982 case '-':
1983 if (!*++s || isSPACE(*s)) {
1984 argc--,argv++;
1985 goto switch_end;
1986 }
ee8bc8b7
NC
1987 /* catch use of gnu style long options.
1988 Both of these exit immediately. */
1989 if (strEQ(s, "version"))
1990 minus_v();
1991 if (strEQ(s, "help"))
1992 usage();
6224f72b
GS
1993 s--;
1994 /* FALL THROUGH */
1995 default:
cea2e8a9 1996 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1997 }
1998 }
c7030b81
NC
1999 }
2000
6224f72b 2001 switch_end:
54310121 2002
c7030b81
NC
2003 {
2004 char *s;
2005
f675dbe5
CB
2006 if (
2007#ifndef SECURE_INTERNAL_GETENV
284167a5 2008 !TAINTING_get &&
f675dbe5 2009#endif
cf756827 2010 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2011 {
74288ac8
GS
2012 while (isSPACE(*s))
2013 s++;
317ea90d 2014 if (*s == '-' && *(s+1) == 'T') {
284167a5
SM
2015#if SILENT_NO_TAINT_SUPPORT
2016 /* silently ignore */
2017#elif NO_TAINT_SUPPORT
2018 Perl_croak("This perl was compiled without taint support. "
2019 "Cowardly refusing to run with -t or -T flags");
2020#else
22f7c9c9 2021 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2022 TAINTING_set(TRUE);
2023 TAINT_WARN_set(FALSE);
2024#endif
317ea90d 2025 }
74288ac8 2026 else {
bd61b366 2027 char *popt_copy = NULL;
74288ac8 2028 while (s && *s) {
54913509 2029 const char *d;
74288ac8
GS
2030 while (isSPACE(*s))
2031 s++;
2032 if (*s == '-') {
2033 s++;
2034 if (isSPACE(*s))
2035 continue;
2036 }
4ea8f8fb 2037 d = s;
74288ac8
GS
2038 if (!*s)
2039 break;
2b622f1a 2040 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2041 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2042 while (++s && *s) {
2043 if (isSPACE(*s)) {
cf756827 2044 if (!popt_copy) {
bfa6c418
NC
2045 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2046 s = popt_copy + (s - d);
2047 d = popt_copy;
cf756827 2048 }
4ea8f8fb
MS
2049 *s++ = '\0';
2050 break;
2051 }
2052 }
1c4db469 2053 if (*d == 't') {
284167a5
SM
2054#if SILENT_NO_TAINT_SUPPORT
2055 /* silently ignore */
2056#elif NO_TAINT_SUPPORT
2057 Perl_croak("This perl was compiled without taint support. "
2058 "Cowardly refusing to run with -t or -T flags");
2059#else
2060 if( !TAINTING_get) {
2061 TAINT_WARN_set(TRUE);
2062 TAINTING_set(TRUE);
317ea90d 2063 }
284167a5 2064#endif
1c4db469 2065 } else {
97bd5664 2066 moreswitches(d);
1c4db469 2067 }
6224f72b 2068 }
6224f72b
GS
2069 }
2070 }
c7030b81 2071 }
a0d0e21e 2072
c29067d7
CH
2073 /* Set $^X early so that it can be used for relocatable paths in @INC */
2074 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2075 assert (!TAINT_get);
c29067d7
CH
2076 TAINT;
2077 S_set_caret_X(aTHX);
2078 TAINT_NOT;
2079
43c0c913 2080#if defined(USE_SITECUSTOMIZE)
20ef40cf 2081 if (!minus_f) {
43c0c913 2082 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2083 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2084 ie a q() operator with a NUL byte as a the delimiter. This avoids
2085 problems with pathnames containing (say) ' */
43c0c913
NC
2086# ifdef PERL_IS_MINIPERL
2087 AV *const inc = GvAV(PL_incgv);
2088 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2089
2090 if (inc0) {
2091 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2092 Perl_newSVpvf(aTHX_
fc81b718
NC
2093 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2094 0, *inc0, 0,
2095 0, *inc0, 0));
43c0c913
NC
2096 }
2097# else
2098 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2099 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2100 if (raw_sitelib) {
2101 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2102 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2103 INCPUSH_CAN_RELOCATE);
2104 const char *const sitelib = SvPVX(sitelib_sv);
2105 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2106 Perl_newSVpvf(aTHX_
2107 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2108 0, sitelib, 0,
2109 0, sitelib, 0));
2110 assert (SvREFCNT(sitelib_sv) == 1);
2111 SvREFCNT_dec(sitelib_sv);
2112 }
43c0c913 2113# endif
20ef40cf
GA
2114 }
2115#endif
2116
6224f72b
GS
2117 if (!scriptname)
2118 scriptname = argv[0];
3280af22 2119 if (PL_e_script) {
6224f72b
GS
2120 argc++,argv--;
2121 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2122 }
bd61b366 2123 else if (scriptname == NULL) {
6224f72b
GS
2124#ifdef MSDOS
2125 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2126 moreswitches("h");
6224f72b
GS
2127#endif
2128 scriptname = "-";
2129 }
2130
284167a5 2131 assert (!TAINT_get);
2cace6ac 2132 init_perllib();
6224f72b 2133
a52eba0e 2134 {
f20b2998 2135 bool suidscript = FALSE;
829372d3 2136
8d113837 2137 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2138 if (!rsfp) {
2139 rsfp = PerlIO_stdin();
87606032 2140 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2141 }
6224f72b 2142
b24bc095 2143 validate_suid(rsfp);
6224f72b 2144
64ca3a65 2145#ifndef PERL_MICRO
a52eba0e
NC
2146# if defined(SIGCHLD) || defined(SIGCLD)
2147 {
2148# ifndef SIGCHLD
2149# define SIGCHLD SIGCLD
2150# endif
2151 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2152 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2153 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2154 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2155 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2156 }
0b5b802d 2157 }
a52eba0e 2158# endif
64ca3a65 2159#endif
0b5b802d 2160
737c24fc 2161 if (doextract) {
faef540c 2162
f20b2998 2163 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2164 setuid scripts. */
2165 forbid_setid('x', suidscript);
f20b2998 2166 /* Hence you can't get here if suidscript is true */
faef540c 2167
95670bde
NC
2168 linestr_sv = newSV_type(SVt_PV);
2169 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2170 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2171 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2172 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2173 }
f4c556ac 2174 }
6224f72b 2175
ea726b52 2176 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2177 CvUNIQUE_on(PL_compcv);
2178
dd2155a4 2179 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2180
dd69841b
BB
2181 PL_isarev = newHV();
2182
0c4f7ff0 2183 boot_core_PerlIO();
6224f72b 2184 boot_core_UNIVERSAL();
e1a479c5 2185 boot_core_mro();
4a5df386 2186 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2187
2188 if (xsinit)
acfe0abc 2189 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2190#ifndef PERL_MICRO
739a0b84 2191#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2192 init_os_extras();
6224f72b 2193#endif
64ca3a65 2194#endif
6224f72b 2195
29209bc5 2196#ifdef USE_SOCKS
1b9c9cf5
DH
2197# ifdef HAS_SOCKS5_INIT
2198 socks5_init(argv[0]);
2199# else
29209bc5 2200 SOCKSinit(argv[0]);
1b9c9cf5 2201# endif
ac27b0f5 2202#endif
29209bc5 2203
6224f72b
GS
2204 init_predump_symbols();
2205 /* init_postdump_symbols not currently designed to be called */
2206 /* more than once (ENV isn't cleared first, for example) */
2207 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2208 if (!PL_do_undump)
6224f72b
GS
2209 init_postdump_symbols(argc,argv,env);
2210
27da23d5
JH
2211 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2212 * or explicitly in some platforms.
085a54d9 2213 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2214 * look like the user wants to use UTF-8. */
a0fd4948 2215#if defined(__SYMBIAN32__)
27da23d5
JH
2216 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2217#endif
e27b5b51 2218# ifndef PERL_IS_MINIPERL
06e66572
JH
2219 if (PL_unicode) {
2220 /* Requires init_predump_symbols(). */
a05d7ebb 2221 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2222 IO* io;
2223 PerlIO* fp;
2224 SV* sv;
2225
a05d7ebb 2226 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2227 * and the default open disciplines. */
a05d7ebb
JH
2228 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2229 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2230 (fp = IoIFP(io)))
2231 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2232 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2233 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2234 (fp = IoOFP(io)))
2235 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2236 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2237 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2238 (fp = IoOFP(io)))
2239 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2240 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2241 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2242 SVt_PV)))) {
a05d7ebb
JH
2243 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2244 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2245 if (in) {
2246 if (out)
76f68e9b 2247 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2248 else
76f68e9b 2249 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2250 }
2251 else if (out)
76f68e9b 2252 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2253 SvSETMAGIC(sv);
2254 }
b310b053
JH
2255 }
2256 }
e27b5b51 2257#endif
b310b053 2258
c7030b81
NC
2259 {
2260 const char *s;
4ffa73a3
JH
2261 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2262 if (strEQ(s, "unsafe"))
2263 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2264 else if (strEQ(s, "safe"))
2265 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2266 else
2267 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2268 }
c7030b81 2269 }
4ffa73a3 2270
81d86705 2271#ifdef PERL_MAD
c7030b81
NC
2272 {
2273 const char *s;
284167a5 2274 if (!TAINTING_get &&
2cc12391 2275 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC
2276 PL_madskills = 1;
2277 PL_minus_c = 1;
2278 if (!s || !s[0])
2279 PL_xmlfp = PerlIO_stdout();
2280 else {
2281 PL_xmlfp = PerlIO_open(s, "w");
2282 if (!PL_xmlfp)
2283 Perl_croak(aTHX_ "Can't open %s", s);
2284 }
1a9a51d4 2285 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2286 }
c7030b81
NC
2287 }
2288
2289 {
2290 const char *s;
81d86705
NC
2291 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2292 PL_madskills = atoi(s);
1a9a51d4 2293 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2294 }
c7030b81 2295 }
81d86705
NC
2296#endif
2297
87606032 2298 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2299 SvREFCNT_dec(linestr_sv);
95670bde 2300
219f7226 2301 PL_subname = newSVpvs("main");
6224f72b 2302
5486870f
DM
2303 if (add_read_e_script)
2304 filter_add(read_e_script, NULL);
2305
6224f72b
GS
2306 /* now parse the script */
2307
93189314 2308 SETERRNO(0,SS_NORMAL);
28ac2b49 2309 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2310 if (PL_minus_c)
cea2e8a9 2311 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2312 else {
cea2e8a9 2313 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2314 PL_origfilename);
6224f72b
GS
2315 }
2316 }
57843af0 2317 CopLINE_set(PL_curcop, 0);
03d9f026 2318 SET_CURSTASH(PL_defstash);
3280af22
NIS
2319 if (PL_e_script) {
2320 SvREFCNT_dec(PL_e_script);
a0714e2c 2321 PL_e_script = NULL;
6224f72b
GS
2322 }
2323
3280af22 2324 if (PL_do_undump)
6224f72b
GS
2325 my_unexec();
2326
57843af0
GS
2327 if (isWARN_ONCE) {
2328 SAVECOPFILE(PL_curcop);
2329 SAVECOPLINE(PL_curcop);
3280af22 2330 gv_check(PL_defstash);
57843af0 2331 }
6224f72b
GS
2332
2333 LEAVE;
2334 FREETMPS;
2335
2336#ifdef MYMALLOC
f6a607bc
RGS
2337 {
2338 const char *s;
6224f72b
GS
2339 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2340 dump_mstats("after compilation:");
f6a607bc 2341 }
6224f72b
GS
2342#endif
2343
2344 ENTER;
febb3a6d 2345 PL_restartjmpenv = NULL;
3280af22 2346 PL_restartop = 0;
312caa8e 2347 return NULL;
6224f72b
GS
2348}
2349
954c1994
GS
2350/*
2351=for apidoc perl_run
2352
2353Tells a Perl interpreter to run. See L<perlembed>.
2354
2355=cut
2356*/
2357
6224f72b 2358int
0cb96387 2359perl_run(pTHXx)
6224f72b 2360{
97aff369 2361 dVAR;
6224f72b 2362 I32 oldscope;
14dd3ad8 2363 int ret = 0;
db36c5a1 2364 dJMPENV;
6224f72b 2365
7918f24d
NC
2366 PERL_ARGS_ASSERT_PERL_RUN;
2367#ifndef MULTIPLICITY
ed6c66dd 2368 PERL_UNUSED_ARG(my_perl);
7918f24d 2369#endif
9d4ba2ae 2370
3280af22 2371 oldscope = PL_scopestack_ix;
96e176bf
CL
2372#ifdef VMS
2373 VMSISH_HUSHED = 0;
2374#endif
6224f72b 2375
14dd3ad8 2376 JMPENV_PUSH(ret);
6224f72b
GS
2377 switch (ret) {
2378 case 1:
2379 cxstack_ix = -1; /* start context stack again */
312caa8e 2380 goto redo_body;
14dd3ad8 2381 case 0: /* normal completion */
14dd3ad8
GS
2382 redo_body:
2383 run_body(oldscope);
14dd3ad8
GS
2384 /* FALL THROUGH */
2385 case 2: /* my_exit() */
3280af22 2386 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2387 LEAVE;
2388 FREETMPS;
03d9f026 2389 SET_CURSTASH(PL_defstash);
3a1ee7e8 2390 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2391 PL_endav && !PL_minus_c) {
ca7b837b 2392 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2393 call_list(oldscope, PL_endav);
9ebf26ad 2394 }
6224f72b
GS
2395#ifdef MYMALLOC
2396 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2397 dump_mstats("after execution: ");
2398#endif
37038d91 2399 ret = STATUS_EXIT;
14dd3ad8 2400 break;
6224f72b 2401 case 3:
312caa8e
CS
2402 if (PL_restartop) {
2403 POPSTACK_TO(PL_mainstack);
2404 goto redo_body;
6224f72b 2405 }
5637ef5b 2406 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2407 FREETMPS;
14dd3ad8
GS
2408 ret = 1;
2409 break;
6224f72b
GS
2410 }
2411
14dd3ad8
GS
2412 JMPENV_POP;
2413 return ret;
312caa8e
CS
2414}
2415
dd374669 2416STATIC void
14dd3ad8
GS
2417S_run_body(pTHX_ I32 oldscope)
2418{
97aff369 2419 dVAR;
d3b97530
DM
2420 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2421 PL_sawampersand ? "Enabling" : "Omitting",
2422 (unsigned int)(PL_sawampersand)));
6224f72b 2423
3280af22 2424 if (!PL_restartop) {
81d86705
NC
2425#ifdef PERL_MAD
2426 if (PL_xmlfp) {
2427 xmldump_all();
2428 exit(0); /* less likely to core dump than my_exit(0) */
2429 }
2430#endif
cf2782cd 2431#ifdef DEBUGGING
f0e3f042
CS
2432 if (DEBUG_x_TEST || DEBUG_B_TEST)
2433 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2434 if (!DEBUG_q_TEST)
2435 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2436#endif
6224f72b 2437
3280af22 2438 if (PL_minus_c) {
bf49b057 2439 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2440 my_exit(0);
2441 }
3280af22 2442 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2443 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2444 if (PL_initav) {
ca7b837b 2445 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2446 call_list(oldscope, PL_initav);
9ebf26ad 2447 }
f1fac472 2448#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2449 if (PL_main_root && PL_main_root->op_slabbed)
2450 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2451#endif
6224f72b
GS
2452 }
2453
2454 /* do it */
2455
ca7b837b 2456 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2457
3280af22 2458 if (PL_restartop) {
febb3a6d 2459 PL_restartjmpenv = NULL;
533c011a 2460 PL_op = PL_restartop;
3280af22 2461 PL_restartop = 0;
cea2e8a9 2462 CALLRUNOPS(aTHX);
6224f72b 2463 }
3280af22
NIS
2464 else if (PL_main_start) {
2465 CvDEPTH(PL_main_cv) = 1;
533c011a 2466 PL_op = PL_main_start;
cea2e8a9 2467 CALLRUNOPS(aTHX);
6224f72b 2468 }
f6b3007c 2469 my_exit(0);
118e2215 2470 assert(0); /* NOTREACHED */
6224f72b
GS
2471}
2472
954c1994 2473/*
ccfc67b7
JH
2474=head1 SV Manipulation Functions
2475
954c1994
GS
2476=for apidoc p||get_sv
2477
64ace3f8
NC
2478Returns the SV of the specified Perl scalar. C<flags> are passed to
2479C<gv_fetchpv>. If C<GV_ADD> is set and the
2480Perl variable does not exist then it will be created. If C<flags> is zero
2481and the variable does not exist then NULL is returned.
954c1994
GS
2482
2483=cut
2484*/
2485
6224f72b 2486SV*
64ace3f8 2487Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2488{
2489 GV *gv;
7918f24d
NC
2490
2491 PERL_ARGS_ASSERT_GET_SV;
2492
64ace3f8 2493 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2494 if (gv)
2495 return GvSV(gv);
a0714e2c 2496 return NULL;
6224f72b
GS
2497}
2498
954c1994 2499/*
ccfc67b7
JH
2500=head1 Array Manipulation Functions
2501
954c1994
GS
2502=for apidoc p||get_av
2503
f0b90de1
SF
2504Returns the AV of the specified Perl global or package array with the given
2505name (so it won't work on lexical variables). C<flags> are passed
2506to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2507Perl variable does not exist then it will be created. If C<flags> is zero
2508and the variable does not exist then NULL is returned.
954c1994 2509
f0b90de1
SF
2510Perl equivalent: C<@{"$name"}>.
2511
954c1994
GS
2512=cut
2513*/
2514
6224f72b 2515AV*
cbfd0a87 2516Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2517{
cbfd0a87 2518 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2519
2520 PERL_ARGS_ASSERT_GET_AV;
2521
cbfd0a87 2522 if (flags)
6224f72b
GS
2523 return GvAVn(gv);
2524 if (gv)
2525 return GvAV(gv);
7d49f689 2526 return NULL;
6224f72b
GS
2527}
2528
954c1994 2529/*
ccfc67b7
JH
2530=head1 Hash Manipulation Functions
2531
954c1994
GS
2532=for apidoc p||get_hv
2533
6673a63c
NC
2534Returns the HV of the specified Perl hash. C<flags> are passed to
2535C<gv_fetchpv>. If C<GV_ADD> is set and the
2536Perl variable does not exist then it will be created. If C<flags> is zero
2537and the variable does not exist then NULL is returned.
954c1994
GS
2538
2539=cut
2540*/
2541
6224f72b 2542HV*
6673a63c 2543Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2544{
6673a63c 2545 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2546
2547 PERL_ARGS_ASSERT_GET_HV;
2548
6673a63c 2549 if (flags)
a0d0e21e
LW
2550 return GvHVn(gv);
2551 if (gv)
2552 return GvHV(gv);
5c284bb0 2553 return NULL;
a0d0e21e
LW
2554}
2555
954c1994 2556/*
ccfc67b7
JH
2557=head1 CV Manipulation Functions
2558
780a5241
NC
2559=for apidoc p||get_cvn_flags
2560
2561Returns the CV of the specified Perl subroutine. C<flags> are passed to
2562C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2563exist then it will be declared (which has the same effect as saying
2564C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2565then NULL is returned.
2566
954c1994
GS
2567=for apidoc p||get_cv
2568
780a5241 2569Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2570
2571=cut
2572*/
2573
a0d0e21e 2574CV*
780a5241 2575Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2576{
780a5241 2577 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2578
2579 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2580
334dda80
FC
2581 /* XXX this is probably not what they think they're getting.
2582 * It has the same effect as "sub name;", i.e. just a forward
2583 * declaration! */
780a5241 2584 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2585 return newSTUB(gv,0);
780a5241 2586 }
a0d0e21e 2587 if (gv)
8ebc5c01 2588 return GvCVu(gv);
601f1833 2589 return NULL;
a0d0e21e
LW
2590}
2591
2c67934f
NC
2592/* Nothing in core calls this now, but we can't replace it with a macro and
2593 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2594CV*
2595Perl_get_cv(pTHX_ const char *name, I32 flags)
2596{
7918f24d
NC
2597 PERL_ARGS_ASSERT_GET_CV;
2598
780a5241
NC
2599 return get_cvn_flags(name, strlen(name), flags);
2600}
2601
79072805
LW
2602/* Be sure to refetch the stack pointer after calling these routines. */
2603
954c1994 2604/*
ccfc67b7
JH
2605
2606=head1 Callback Functions
2607
954c1994
GS
2608=for apidoc p||call_argv
2609
f0b90de1
SF
2610Performs a callback to the specified named and package-scoped Perl subroutine
2611with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2612
2613Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2614
2615=cut
2616*/
2617
a0d0e21e 2618I32
5aaab254 2619Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2620
8ac85365
NIS
2621 /* See G_* flags in cop.h */
2622 /* null terminated arg list */
8990e307 2623{
97aff369 2624 dVAR;
a0d0e21e 2625 dSP;
8990e307 2626
7918f24d
NC
2627 PERL_ARGS_ASSERT_CALL_ARGV;
2628
924508f0 2629 PUSHMARK(SP);
a0d0e21e 2630 if (argv) {
8990e307 2631 while (*argv) {
6e449a3a 2632 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2633 argv++;
2634 }
a0d0e21e 2635 PUTBACK;
8990e307 2636 }
864dbfa3 2637 return call_pv(sub_name, flags);
8990e307
LW
2638}
2639
954c1994
GS
2640/*
2641=for apidoc p||call_pv
2642
2643Performs a callback to the specified Perl sub. See L<perlcall>.
2644
2645=cut
2646*/
2647
a0d0e21e 2648I32
864dbfa3 2649Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2650 /* name of the subroutine */
2651 /* See G_* flags in cop.h */
a0d0e21e 2652{
7918f24d
NC
2653 PERL_ARGS_ASSERT_CALL_PV;
2654
0da0e728 2655 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2656}
2657
954c1994
GS
2658/*
2659=for apidoc p||call_method
2660
2661Performs a callback to the specified Perl method. The blessed object must
2662be on the stack. See L<perlcall>.
2663
2664=cut
2665*/
2666
a0d0e21e 2667I32
864dbfa3 2668Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2669 /* name of the subroutine */
2670 /* See G_* flags in cop.h */
a0d0e21e 2671{
46ca9bac 2672 STRLEN len;
7918f24d
NC
2673 PERL_ARGS_ASSERT_CALL_METHOD;
2674
46ca9bac 2675 len = strlen(methname);
2676
2677 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2678 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2679}
2680
2681/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2682/*
2683=for apidoc p||call_sv
2684
2685Performs a callback to the Perl sub whose name is in the SV. See
2686L<perlcall>.
2687
2688=cut
2689*/
2690
a0d0e21e 2691I32
001d637e 2692Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2693 /* See G_* flags in cop.h */
a0d0e21e 2694{
27da23d5 2695 dVAR; dSP;
a0d0e21e 2696 LOGOP myop; /* fake syntax tree node */
968b3946 2697 UNOP method_op;
aa689395 2698 I32 oldmark;
8ea43dc8 2699 VOL I32 retval = 0;
a0d0e21e 2700 I32 oldscope;
54310121 2701 bool oldcatch = CATCH_GET;
6224f72b 2702 int ret;
c4420975 2703 OP* const oldop = PL_op;
db36c5a1 2704 dJMPENV;
1e422769 2705
7918f24d
NC
2706 PERL_ARGS_ASSERT_CALL_SV;
2707
a0d0e21e
LW
2708 if (flags & G_DISCARD) {
2709 ENTER;
2710 SAVETMPS;
2711 }
2f8edad0
NC
2712 if (!(flags & G_WANT)) {
2713 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2714 */
2715 flags |= G_SCALAR;
2716 }
a0d0e21e 2717
aa689395 2718 Zero(&myop, 1, LOGOP);
f51d4af5 2719 if (!(flags & G_NOARGS))
aa689395 2720 myop.op_flags |= OPf_STACKED;
4f911530 2721 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2722 SAVEOP();
533c011a 2723 PL_op = (OP*)&myop;
aa689395 2724
3280af22
NIS
2725 EXTEND(PL_stack_sp, 1);
2726 *++PL_stack_sp = sv;
aa689395 2727 oldmark = TOPMARK;
3280af22 2728 oldscope = PL_scopestack_ix;
a0d0e21e 2729
3280af22 2730 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2731 /* Handle first BEGIN of -d. */
3280af22 2732 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2733 /* Try harder, since this may have been a sighandler, thus
2734 * curstash may be meaningless. */
ea726b52 2735 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2736 && !(flags & G_NODEBUG))
5ff48db8 2737 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2738
968b3946
GS
2739 if (flags & G_METHOD) {
2740 Zero(&method_op, 1, UNOP);
5ff48db8 2741 method_op.op_next = (OP*)&myop;
968b3946 2742 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2743 method_op.op_type = OP_METHOD;
968b3946 2744 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2745 myop.op_type = OP_ENTERSUB;
f39d0b86 2746 PL_op = (OP*)&method_op;
968b3946
GS
2747 }
2748
312caa8e 2749 if (!(flags & G_EVAL)) {
0cdb2077 2750 CATCH_SET(TRUE);
d6f07c05 2751 CALL_BODY_SUB((OP*)&myop);
312caa8e 2752 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2753 CATCH_SET(oldcatch);
312caa8e
CS
2754 }
2755 else {
d78bda3d 2756 myop.op_other = (OP*)&myop;
3280af22 2757 PL_markstack_ptr--;
edb2152a 2758 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2759 PL_markstack_ptr++;
a0d0e21e 2760
14dd3ad8 2761 JMPENV_PUSH(ret);
edb2152a 2762
6224f72b
GS
2763 switch (ret) {
2764 case 0:
14dd3ad8 2765 redo_body:
d6f07c05 2766 CALL_BODY_SUB((OP*)&myop);
312caa8e 2767 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2768 if (!(flags & G_KEEPERR)) {
ab69dbc2 2769 CLEAR_ERRSV();
8433848b 2770 }
a0d0e21e 2771 break;
6224f72b 2772 case 1:
f86702cc 2773 STATUS_ALL_FAILURE;
a0d0e21e 2774 /* FALL THROUGH */
6224f72b 2775 case 2:
a0d0e21e 2776 /* my_exit() was called */
03d9f026 2777 SET_CURSTASH(PL_defstash);
a0d0e21e 2778 FREETMPS;
14dd3ad8 2779 JMPENV_POP;
f86702cc 2780 my_exit_jump();
118e2215 2781 assert(0); /* NOTREACHED */
6224f72b 2782 case 3:
3280af22 2783 if (PL_restartop) {
febb3a6d 2784 PL_restartjmpenv = NULL;
533c011a 2785 PL_op = PL_restartop;
3280af22 2786 PL_restartop = 0;
312caa8e 2787 goto redo_body;
a0d0e21e 2788 }
3280af22 2789 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2790 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2791 retval = 0;
2792 else {
2793 retval = 1;
3280af22 2794 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2795 }
312caa8e 2796 break;
a0d0e21e 2797 }
a0d0e21e 2798
edb2152a
NC
2799 if (PL_scopestack_ix > oldscope)
2800 delete_eval_scope();
14dd3ad8 2801 JMPENV_POP;
a0d0e21e 2802 }
1e422769 2803
a0d0e21e 2804 if (flags & G_DISCARD) {
3280af22 2805 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2806 retval = 0;
2807 FREETMPS;
2808 LEAVE;
2809 }
533c011a 2810 PL_op = oldop;
a0d0e21e
LW
2811 return retval;
2812}
2813
6e72f9df 2814/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2815
954c1994
GS
2816/*
2817=for apidoc p||eval_sv
2818
be064c4a
DM
2819Tells Perl to C<eval> the string in the SV. It supports the same flags
2820as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2821
2822=cut
2823*/
2824
a0d0e21e 2825I32
864dbfa3 2826Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2827
8ac85365 2828 /* See G_* flags in cop.h */
a0d0e21e 2829{
97aff369 2830 dVAR;
924508f0 2831 dSP;
a0d0e21e 2832 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2833 VOL I32 oldmark = SP - PL_stack_base;
2834 VOL I32 retval = 0;
6224f72b 2835 int ret;
c4420975 2836 OP* const oldop = PL_op;
db36c5a1 2837 dJMPENV;
84902520 2838
7918f24d
NC
2839 PERL_ARGS_ASSERT_EVAL_SV;
2840
4633a7c4
LW
2841 if (flags & G_DISCARD) {
2842 ENTER;
2843 SAVETMPS;
2844 }
2845
462e5cf6 2846 SAVEOP();
533c011a 2847 PL_op = (OP*)&myop;
5ff48db8 2848 Zero(&myop, 1, UNOP);
3280af22
NIS
2849 EXTEND(PL_stack_sp, 1);
2850 *++PL_stack_sp = sv;
79072805 2851
4633a7c4
LW
2852 if (!(flags & G_NOARGS))
2853 myop.op_flags = OPf_STACKED;
6e72f9df 2854 myop.op_type = OP_ENTEREVAL;
4f911530 2855 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2856 if (flags & G_KEEPERR)
2857 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2858
2859 if (flags & G_RE_REPARSING)
2860 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2861
dedbcade
DM
2862 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2863 * before a PUSHEVAL, which corrupts the stack after a croak */
2864 TAINT_PROPER("eval_sv()");
2865
14dd3ad8 2866 JMPENV_PUSH(ret);
6224f72b
GS
2867 switch (ret) {
2868 case 0:
14dd3ad8 2869 redo_body:
2ba65d5f
DM
2870 if (PL_op == (OP*)(&myop)) {
2871 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2872 if (!PL_op)
2873 goto fail; /* failed in compilation */
2874 }
4aca2f62 2875 CALLRUNOPS(aTHX);
312caa8e 2876 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2877 if (!(flags & G_KEEPERR)) {
ab69dbc2 2878 CLEAR_ERRSV();
8433848b 2879 }
4633a7c4 2880 break;
6224f72b 2881 case 1:
f86702cc 2882 STATUS_ALL_FAILURE;
4633a7c4 2883 /* FALL THROUGH */
6224f72b 2884 case 2:
4633a7c4 2885 /* my_exit() was called */
03d9f026 2886 SET_CURSTASH(PL_defstash);
4633a7c4 2887 FREETMPS;
14dd3ad8 2888 JMPENV_POP;
f86702cc 2889 my_exit_jump();
118e2215 2890 assert(0); /* NOTREACHED */
6224f72b 2891 case 3:
3280af22 2892 if (PL_restartop) {
febb3a6d 2893 PL_restartjmpenv = NULL;
533c011a 2894 PL_op = PL_restartop;
3280af22 2895 PL_restartop = 0;
312caa8e 2896 goto redo_body;
4633a7c4 2897 }
4aca2f62 2898 fail:
3280af22 2899 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2900 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2901 retval = 0;
2902 else {
2903 retval = 1;
3280af22 2904 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2905 }
312caa8e 2906 break;
4633a7c4
LW
2907 }
2908
14dd3ad8 2909 JMPENV_POP;
4633a7c4 2910 if (flags & G_DISCARD) {
3280af22 2911 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2912 retval = 0;
2913 FREETMPS;
2914 LEAVE;
2915 }
533c011a 2916 PL_op = oldop;
4633a7c4
LW
2917 return retval;
2918}
2919
954c1994
GS
2920/*
2921=for apidoc p||eval_pv
2922
2923Tells Perl to C<eval> the given string and return an SV* result.
2924
2925=cut
2926*/
2927
137443ea 2928SV*
864dbfa3 2929Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2930{
97aff369 2931 dVAR;
137443ea
PP
2932 SV* sv = newSVpv(p, 0);
2933
7918f24d
NC
2934 PERL_ARGS_ASSERT_EVAL_PV;
2935
864dbfa3 2936 eval_sv(sv, G_SCALAR);
137443ea
PP
2937 SvREFCNT_dec(sv);
2938
ed1786ad
DD
2939 {
2940 dSP;
2941 sv = POPs;
2942 PUTBACK;
2943 }
137443ea 2944
eed484f9
DD
2945 /* just check empty string or undef? */
2946 if (croak_on_error) {
2947 SV * const errsv = ERRSV;
2948 if(SvTRUE_NN(errsv))
2949 /* replace with croak_sv? */
2950 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2951 }
137443ea
PP
2952
2953 return sv;
2954}
2955
4633a7c4
LW
2956/* Require a module. */
2957
954c1994 2958/*
ccfc67b7
JH
2959=head1 Embedding Functions
2960
954c1994
GS
2961=for apidoc p||require_pv
2962
7d3fb230
BS
2963Tells Perl to C<require> the file named by the string argument. It is
2964analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2965implemented that way; consider using load_module instead.
954c1994 2966
7d3fb230 2967=cut */
954c1994 2968
4633a7c4 2969void
864dbfa3 2970Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2971{
97aff369 2972 dVAR;
d3acc0f7 2973 dSP;
97aff369 2974 SV* sv;
7918f24d
NC
2975
2976 PERL_ARGS_ASSERT_REQUIRE_PV;
2977
e788e7d3 2978 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2979 PUTBACK;
be41e5d9
NC
2980 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2981 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2982 SPAGAIN;
2983 POPSTACK;
79072805
LW
2984}
2985
76e3520e 2986STATIC void
b6f82619 2987S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2988{
ab821d7f 2989 /* This message really ought to be max 23 lines.
75c72d73 2990 * Removed -h because the user already knows that option. Others? */
fb73857a 2991
1566c39d
NC
2992 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2993 minimum of 509 character string literals. */
27da23d5 2994 static const char * const usage_msg[] = {
1566c39d
NC
2995" -0[octal] specify record separator (\\0, if no argument)\n"
2996" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2997" -C[number/list] enables the listed Unicode features\n"
2998" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2999" -d[:debugger] run program under debugger\n"
3000" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3001" -e program one line of program (several -e's allowed, omit programfile)\n"
3002" -E program like -e, but enables all optional features\n"
3003" -f don't do $sitelib/sitecustomize.pl at startup\n"
3004" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3005" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3006" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3007" -l[octal] enable line ending processing, specifies line terminator\n"
3008" -[mM][-]module execute \"use/no module...\" before executing program\n"
3009" -n assume \"while (<>) { ... }\" loop around program\n"
3010" -p assume loop like -n but print line also, like sed\n"
3011" -s enable rudimentary parsing for switches after programfile\n"
3012" -S look for programfile using PATH environment variable\n",
3013" -t enable tainting warnings\n"
3014" -T enable tainting checks\n"
3015" -u dump core after parsing program\n"
3016" -U allow unsafe operations\n"
3017" -v print version, patchlevel and license\n"
3018" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3019" -w enable many useful warnings\n"
1566c39d
NC
3020" -W enable all warnings\n"
3021" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3022" -X disable all warnings\n"
3023" \n"
3024"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3025NULL
3026};
27da23d5 3027 const char * const *p = usage_msg;
1566c39d 3028 PerlIO *out = PerlIO_stdout();
fb73857a 3029
1566c39d
NC
3030 PerlIO_printf(out,
3031 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3032 PL_origargv[0]);
fb73857a 3033 while (*p)
1566c39d 3034 PerlIO_puts(out, *p++);
b6f82619 3035 my_exit(0);
4633a7c4
LW
3036}
3037
b4ab917c
DM
3038/* convert a string of -D options (or digits) into an int.
3039 * sets *s to point to the char after the options */
3040
3041#ifdef DEBUGGING
3042int
e1ec3a88 3043Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3044{
27da23d5 3045 static const char * const usage_msgd[] = {
651b8f1a
NC
3046 " Debugging flag values: (see also -d)\n"
3047 " p Tokenizing and parsing (with v, displays parse stack)\n"
3048 " s Stack snapshots (with v, displays all stacks)\n"
3049 " l Context (loop) stack processing\n"
3050 " t Trace execution\n"
3051 " o Method and overloading resolution\n",
3052 " c String/numeric conversions\n"
3053 " P Print profiling info, source file input state\n"
3054 " m Memory and SV allocation\n"
3055 " f Format processing\n"
3056 " r Regular expression parsing and execution\n"
3057 " x Syntax tree dump\n",
3058 " u Tainting checks\n"
3059 " H Hash dump -- usurps values()\n"
3060 " X Scratchpad allocation\n"
3061 " D Cleaning up\n"
56967202 3062 " S Op slab allocation\n"
651b8f1a
NC
3063 " T Tokenising\n"
3064 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3065 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3066 " v Verbose: use in conjunction with other flags\n"
3067 " C Copy On Write\n"
3068 " A Consistency checks on internal structures\n"
3069 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3070 " M trace smart match resolution\n"
3071 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3072 NULL
3073 };
b4ab917c 3074 int i = 0;
7918f24d
NC
3075
3076 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3077
b4ab917c
DM
3078 if (isALPHA(**s)) {
3079 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3080 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c 3081
0eb30aeb 3082 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3083 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3084 if (d)
3085 i |= 1 << (d - debopts);
3086 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3087 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3088 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3089 }
3090 }
e6e64d9b 3091 else if (isDIGIT(**s)) {
b4ab917c 3092 i = atoi(*s);
0eb30aeb 3093 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3094 }
ddcf8bc1 3095 else if (givehelp) {
06e869a4 3096 const char *const *p = usage_msgd;
651b8f1a 3097 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3098 }
b4ab917c
DM
3099# ifdef EBCDIC
3100 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3101 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3102 "-Dp not implemented on this platform\n");
3103# endif
3104 return i;
3105}
3106#endif
3107
79072805
LW
3108/* This routine handles any switches that can be given during run */
3109
c7030b81
NC
3110const char *
3111Perl_moreswitches(pTHX_ const char *s)
79072805 3112{
27da23d5 3113 dVAR;
84c133a0 3114 UV rschar;
0544e6df 3115 const char option = *s; /* used to remember option in -m/-M code */
79072805 3116
7918f24d
NC
3117 PERL_ARGS_ASSERT_MORESWITCHES;
3118
79072805
LW
3119 switch (*s) {
3120 case '0':
a863c7d1 3121 {
f2095865 3122 I32 flags = 0;
a3b680e6 3123 STRLEN numlen;
f2095865
JH
3124
3125 SvREFCNT_dec(PL_rs);
3126 if (s[1] == 'x' && s[2]) {
a3b680e6 3127 const char *e = s+=2;
f2095865
JH
3128 U8 *tmps;
3129
a3b680e6
AL
3130 while (*e)
3131 e++;
f2095865
JH
3132 numlen = e - s;
3133 flags = PERL_SCAN_SILENT_ILLDIGIT;
3134 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3135 if (s + numlen < e) {
3136 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3137 numlen = 0;
3138 s--;
3139 }
396482e1 3140 PL_rs = newSVpvs("");
c5661c80 3141 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3142 tmps = (U8*)SvPVX(PL_rs);
3143 uvchr_to_utf8(tmps, rschar);
3144 SvCUR_set(PL_rs, UNISKIP(rschar));
3145 SvUTF8_on(PL_rs);
3146 }
3147 else {
3148 numlen = 4;
3149 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3150 if (rschar & ~((U8)~0))
3151 PL_rs = &PL_sv_undef;
3152 else if (!rschar && numlen >= 2)
396482e1 3153 PL_rs = newSVpvs("");
f2095865
JH
3154 else {
3155 char ch = (char)rschar;
3156 PL_rs = newSVpvn(&ch, 1);
3157 }
3158 }
64ace3f8 3159 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3160 return s + numlen;
a863c7d1 3161 }
46487f74 3162 case 'C':
a05d7ebb 3163 s++;
dd374669 3164 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3165 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3166 PL_utf8cache = -1;
46487f74 3167 return s;
2304df62 3168 case 'F':
3280af22 3169 PL_minus_F = TRUE;
ebce5377
RGS
3170 PL_splitstr = ++s;
3171 while (*s && !isSPACE(*s)) ++s;
e49e380e 3172 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3173 return s;
79072805 3174 case 'a':
3280af22 3175 PL_minus_a = TRUE;
79072805
LW
3176 s++;
3177 return s;
3178 case 'c':
3280af22 3179 PL_minus_c = TRUE;
79072805
LW
3180 s++;
3181 return s;
3182 case 'd':
f20b2998 3183 forbid_setid('d', FALSE);
4633a7c4 3184 s++;
2cbb2ee1
RGS
3185
3186 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3187 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3188 ++s;
3189 my_setenv("PERL5DB_THREADED", "1");
3190 }
3191
70c94a19
RR
3192 /* The following permits -d:Mod to accepts arguments following an =
3193 in the fashion that -MSome::Mod does. */
3194 if (*s == ':' || *s == '=') {
b19934fb
NC
3195 const char *start;
3196 const char *end;
3197 SV *sv;
3198
3199 if (*++s == '-') {
3200 ++s;
3201 sv = newSVpvs("no Devel::");
3202 } else {
3203 sv = newSVpvs("use Devel::");
3204 }
3205
3206 start = s;
3207 end = s + strlen(s);
f85893a1 3208
b19934fb 3209 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3210 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3211 if (*s != '=')
f85893a1 3212 sv_catpvn(sv, start, end - start);
70c94a19
RR
3213 else {
3214 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3215 /* Don't use NUL as q// delimiter here, this string goes in the
3216 * environment. */
3217 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3218 }
f85893a1 3219 s = end;
184f32ec 3220 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3221 SvREFCNT_dec(sv);
4633a7c4 3222 }
ed094faf 3223 if (!PL_perldb) {
3280af22 3224 PL_perldb = PERLDB_ALL;
a0d0e21e 3225 init_debugger();
ed094faf 3226 }
79072805
LW
3227 return s;
3228 case 'D':
0453d815 3229 {
79072805 3230#ifdef DEBUGGING
f20b2998 3231 forbid_setid('D', FALSE);
b4ab917c 3232 s++;
dd374669 3233 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3234#else /* !DEBUGGING */
0453d815 3235 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3236 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3237 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3238 for (s++; isWORDCHAR(*s); s++) ;
79072805 3239#endif
79072805 3240 return s;
0453d815 3241 }
4633a7c4 3242 case 'h':
b6f82619 3243 usage();
79072805 3244 case 'i':
43c5f42d 3245 Safefree(PL_inplace);
c030f24b
GH
3246#if defined(__CYGWIN__) /* do backup extension automagically */
3247 if (*(s+1) == '\0') {
c86a4f2e 3248 PL_inplace = savepvs(".bak");
c030f24b
GH
3249 return s+1;
3250 }
3251#endif /* __CYGWIN__ */
5ef5d758 3252 {
d4c19fe8 3253 const char * const start = ++s;
5ef5d758
NC
3254 while (*s && !isSPACE(*s))
3255 ++s;
3256
3257 PL_inplace = savepvn(start, s - start);
3258 }
7b8d334a 3259 if (*s) {
5ef5d758 3260 ++s;
7b8d334a 3261 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3262 s++;
7b8d334a 3263 }
fb73857a 3264 return s;
4e49a025 3265 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3266 forbid_setid('I', FALSE);
fb73857a
PP
3267 ++s;
3268 while (*s && isSPACE(*s))
3269 ++s;
3270 if (*s) {
c7030b81 3271 const char *e, *p;
0df16ed7
GS
3272 p = s;
3273 /* ignore trailing spaces (possibly followed by other switches) */
3274 do {
3275 for (e = p; *e && !isSPACE(*e); e++) ;
3276 p = e;
3277 while (isSPACE(*p))
3278 p++;
3279 } while (*p && *p != '-');
55b4bc1c 3280 incpush(s, e-s,
e28f3139 3281 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3282 s = p;
3283 if (*s == '-')
3284 s++;
79072805
LW
3285 }
3286 else
a67e862a 3287 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3288 return s;
79072805 3289 case 'l':
3280af22 3290 PL_minus_l = TRUE;
79072805 3291 s++;
7889fe52
NIS
3292 if (PL_ors_sv) {
3293 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3294 PL_ors_sv = NULL;
7889fe52 3295 }
79072805 3296 if (isDIGIT(*s)) {
53305cf1 3297 I32 flags = 0;
a3b680e6 3298 STRLEN numlen;
396482e1 3299 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3300 numlen = 3 + (*s == '0');
3301 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3302 s += numlen;
3303 }
3304 else {
8bfdd7d9 3305 if (RsPARA(PL_rs)) {
396482e1 3306 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3307 }
3308 else {
8bfdd7d9 3309 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3310 }
79072805
LW
3311 }
3312 return s;
1a30305b 3313 case 'M':
f20b2998 3314 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3315 /* FALL THROUGH */
3316 case 'm':
f20b2998 3317 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3318 if (*++s) {
c7030b81 3319 const char *start;
b64cb68c 3320 const char *end;
11343788 3321 SV *sv;
e1ec3a88 3322 const char *use = "use ";
0544e6df 3323 bool colon = FALSE;
a5f75d66 3324 /* -M-foo == 'no foo' */
d0043bd1
NC
3325 /* Leading space on " no " is deliberate, to make both
3326 possibilities the same length. */
3327 if (*s == '-') { use = " no "; ++s; }
3328 sv = newSVpvn(use,4);
a5f75d66 3329 start = s;
1a30305b 3330 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3331 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3332 if( *s++ == ':' ) {
3333 if( *s == ':' )
3334 s++;
3335 else
3336 colon = TRUE;
3337 }
3338 }
3339 if (s == start)
3340 Perl_croak(aTHX_ "Module name required with -%c option",
3341 option);
3342 if (colon)
3343 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3344 "contains single ':'",
63da6837 3345 (int)(s - start), start, option);
b64cb68c 3346 end = s + strlen(s);
c07a80fd 3347 if (*s != '=') {
b64cb68c 3348 sv_catpvn(sv, start, end - start);
0544e6df 3349 if (option == 'm') {
c07a80fd 3350 if (*s != '\0')
cea2e8a9 3351 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3352 sv_catpvs( sv, " ()");
c07a80fd
PP
3353 }
3354 } else {
11343788 3355 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3356 /* Use NUL as q''-delimiter. */
3357 sv_catpvs(sv, " split(/,/,q\0");
3358 ++s;
3359 sv_catpvn(sv, s, end - s);
396482e1 3360 sv_catpvs(sv, "\0)");
c07a80fd 3361 }
b64cb68c 3362 s = end;
29a861e7 3363 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3364 }
3365 else
0544e6df 3366 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3367 return s;
79072805 3368 case 'n':
3280af22 3369 PL_minus_n = TRUE;
79072805
LW
3370 s++;
3371 return s;
3372 case 'p':
3280af22 3373 PL_minus_p = TRUE;
79072805
LW
3374 s++;
3375 return s;
3376 case 's':
f20b2998 3377 forbid_setid('s', FALSE);
3280af22 3378 PL_doswitches = TRUE;
79072805
LW
3379 s++;
3380 return s;
6537fe72 3381 case 't':
27a6968b 3382 case 'T':
284167a5
SM
3383#if SILENT_NO_TAINT_SUPPORT
3384 /* silently ignore */
3385#elif NO_TAINT_SUPPORT
3386 Perl_croak("This perl was compiled without taint support. "
3387 "Cowardly refusing to run with -t or -T flags");
3388#else
3389 if (!TAINTING_get)
27a6968b 3390 TOO_LATE_FOR(*s);
284167a5 3391#endif
6537fe72 3392 s++;
463ee0b2 3393 return s;
79072805 3394 case 'u':
3280af22 3395 PL_do_undump = TRUE;
79072805
LW
3396 s++;
3397 return s;
3398 case 'U':
3280af22 3399 PL_unsafe = TRUE;
79072805
LW
3400 s++;
3401 return s;
3402 case 'v':
c4bc78d9
NC
3403 minus_v();
3404 case 'w':
3405 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3406 PL_dowarn |= G_WARN_ON;
3407 }
3408 s++;
3409 return s;
3410 case 'W':
3411 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3412 if (!specialWARN(PL_compiling.cop_warnings))
3413 PerlMemShared_free(PL_compiling.cop_warnings);
3414 PL_compiling.cop_warnings = pWARN_ALL ;
3415 s++;
3416 return s;
3417 case 'X':
3418 PL_dowarn = G_WARN_ALL_OFF;
3419 if (!specialWARN(PL_compiling.cop_warnings))
3420 PerlMemShared_free(PL_compiling.cop_warnings);
3421 PL_compiling.cop_warnings = pWARN_NONE ;
3422 s++;
3423 return s;
3424 case '*':
3425 case ' ':
3426 while( *s == ' ' )
3427 ++s;
3428 if (s[0] == '-') /* Additional switches on #! line. */
3429 return s+1;
3430 break;
3431 case '-':
3432 case 0:
3433#if defined(WIN32) || !defined(PERL_STRICT_CR)
3434 case '\r':
3435#endif
3436 case '\n':
3437 case '\t':
3438 break;
3439#ifdef ALTERNATE_SHEBANG
3440 case 'S': /* OS/2 needs -S on "extproc" line. */
3441 break;
3442#endif
4bb78d63
CB
3443 case 'e': case 'f': case 'x': case 'E':
3444#ifndef ALTERNATE_SHEBANG
3445 case 'S':
3446#endif
3447 case 'V':
c4bc78d9 3448 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3449 default:
3450 Perl_croak(aTHX_
3451 "Unrecognized switch: -%.1s (-h will show valid options)",s
3452 );
c4bc78d9
NC
3453 }
3454 return NULL;
3455}
3456
3457
3458STATIC void
3459S_minus_v(pTHX)
3460{
fc3381af 3461 PerlIO * PIO_stdout;
d7aa5382 3462 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3463 upg_version(PL_patchlevel, TRUE);
8e9464f1 3464#if !defined(DGUX)
46807d8e
YO
3465 {
3466 SV* level= vstringify(PL_patchlevel);
3467#ifdef PERL_PATCHNUM
23d483e2
NC
3468# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3469 SV *num = newSVpvs(PERL_PATCHNUM "*");
3470# else
3471 SV *num = newSVpvs(PERL_PATCHNUM);
3472# endif
fc3381af
DD
3473 {
3474 STRLEN level_len, num_len;
3475 char * level_str, * num_str;
3476 num_str = SvPV(num, num_len);
3477 level_str = SvPV(level, level_len);
3478 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3479 SvREFCNT_dec(level);
3480 level= num;
3481 } else {
3482 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3483 SvREFCNT_dec(num);
3484 }
46807d8e
YO
3485 }
3486 #endif
fc3381af
DD
3487 PIO_stdout = PerlIO_stdout();
3488 PerlIO_printf(PIO_stdout,
ded326e4
DG
3489 "\nThis is perl " STRINGIFY(PERL_REVISION)
3490 ", version " STRINGIFY(PERL_VERSION)
3491 ", subversion " STRINGIFY(PERL_SUBVERSION)
3492 " (%"SVf") built for " ARCHNAME, level
3493 );
46807d8e
YO
3494 SvREFCNT_dec(level);
3495 }
8e9464f1 3496#else /* DGUX */
fc3381af 3497 PIO_stdout = PerlIO_stdout();
8e9464f1 3498/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
fc3381af 3499 PerlIO_printf(PIO_stdout,
52ea0aec 3500 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3501 SVfARG(vstringify(PL_patchlevel))));
fc3381af 3502 PerlIO_printf(PIO_stdout,
8e9464f1
JH
3503 Perl_form(aTHX_ " built under %s at %s %s\n",
3504 OSNAME, __DATE__, __TIME__));
fc3381af 3505 PerlIO_printf(PIO_stdout,
8e9464f1 3506 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3507 OSVERS));
8e9464f1 3508#endif /* !DGUX */
fb73857a
PP
3509#if defined(LOCAL_PATCH_COUNT)
3510 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3511 PerlIO_printf(PIO_stdout,
b0e47665
GS
3512 "\n(with %d registered patch%s, "
3513 "see perl -V for more detail)",
bb7a0f54 3514 LOCAL_PATCH_COUNT,
b0e47665 3515 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3516#endif
1a30305b 3517
fc3381af 3518 PerlIO_printf(PIO_stdout,
d907e2e9 3519 "\n\nCopyright 1987-2013, Larry Wall\n");
79072805 3520#ifdef MSDOS
fc3381af 3521 PerlIO_printf(PIO_stdout,
b0e47665 3522 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3523#endif
3524#ifdef DJGPP
fc3381af 3525 PerlIO_printf(PIO_stdout,
b0e47665
GS
3526 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3527 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3528#endif
79072805 3529#ifdef OS2
fc3381af 3530 PerlIO_printf(PIO_stdout,
b0e47665 3531 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"