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SV_CONST(name) and PL_sv_consts
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CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
LW
2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
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
a38ab475
RZ
311 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
312
0631ea03
AB
313#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
314 _dyld_lookup_and_bind
315 ("__environ", (unsigned long *) &environ_pointer, NULL);
316#endif /* environ */
317
2f42fcb0
JH
318#ifndef PERL_MICRO
319# ifdef USE_ENVIRON_ARRAY
0631ea03 320 PL_origenviron = environ;
2f42fcb0 321# endif
0631ea03
AB
322#endif
323
5311654c 324 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 325 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
326 * The HZ if not originally defined has been by now
327 * been defined as CLK_TCK, if available. */
b6c36746 328#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
329 PL_clocktick = sysconf(_SC_CLK_TCK);
330 if (PL_clocktick <= 0)
331#endif
332 PL_clocktick = HZ;
333
081fc587
AB
334 PL_stashcache = newHV();
335
e8e3635e 336 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 337 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 338
27da23d5
JH
339#ifdef HAS_MMAP
340 if (!PL_mmap_page_size) {
341#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
342 {
343 SETERRNO(0, SS_NORMAL);
344# ifdef _SC_PAGESIZE
345 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
346# else
347 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
348# endif
349 if ((long) PL_mmap_page_size < 0) {
350 if (errno) {
44f8325f 351 SV * const error = ERRSV;
d4c19fe8 352 SvUPGRADE(error, SVt_PV);
0510663f 353 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
354 }
355 else
356 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
357 }
358 }
359#else
360# ifdef HAS_GETPAGESIZE
361 PL_mmap_page_size = getpagesize();
362# else
363# if defined(I_SYS_PARAM) && defined(PAGESIZE)
364 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
365# endif
366# endif
367#endif
368 if (PL_mmap_page_size <= 0)
369 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
370 (IV) PL_mmap_page_size);
371 }
372#endif /* HAS_MMAP */
373
374#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
375 PL_timesbase.tms_utime = 0;
376 PL_timesbase.tms_stime = 0;
377 PL_timesbase.tms_cutime = 0;
378 PL_timesbase.tms_cstime = 0;
379#endif
380
7d113631
NC
381 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
382
a3e6e81e 383 PL_registered_mros = newHV();
9e169432
NC
384 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
385 HvMAX(PL_registered_mros) = 0;
a3e6e81e 386
8990e307 387 ENTER;
79072805
LW
388}
389
954c1994 390/*
62375a60
NIS
391=for apidoc nothreadhook
392
393Stub that provides thread hook for perl_destruct when there are
394no threads.
395
396=cut
397*/
398
399int
4e9e3734 400Perl_nothreadhook(pTHX)
62375a60 401{
96a5add6 402 PERL_UNUSED_CONTEXT;
62375a60
NIS
403 return 0;
404}
405
41e4abd8
NC
406#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
407void
408Perl_dump_sv_child(pTHX_ SV *sv)
409{
410 ssize_t got;
bf357333
NC
411 const int sock = PL_dumper_fd;
412 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
413 union control_un control;
414 struct msghdr msg;
808ad2d0 415 struct iovec vec[2];
bf357333 416 struct cmsghdr *cmptr;
808ad2d0
NC
417 int returned_errno;
418 unsigned char buffer[256];
41e4abd8 419
7918f24d
NC
420 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
421
bf357333 422 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
423 return;
424
425 PerlIO_flush(Perl_debug_log);
426
bf357333
NC
427 /* All these shenanigans are to pass a file descriptor over to our child for
428 it to dump out to. We can't let it hold open the file descriptor when it
429 forks, as the file descriptor it will dump to can turn out to be one end
430 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 431 be open, the wait would be forever.) */
bf357333
NC
432
433 msg.msg_control = control.control;
434 msg.msg_controllen = sizeof(control.control);
435 /* We're a connected socket so we don't need a destination */
436 msg.msg_name = NULL;
437 msg.msg_namelen = 0;
438 msg.msg_iov = vec;
808ad2d0 439 msg.msg_iovlen = 1;
bf357333
NC
440
441 cmptr = CMSG_FIRSTHDR(&msg);
442 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
443 cmptr->cmsg_level = SOL_SOCKET;
444 cmptr->cmsg_type = SCM_RIGHTS;
445 *((int *)CMSG_DATA(cmptr)) = 1;
446
447 vec[0].iov_base = (void*)&sv;
448 vec[0].iov_len = sizeof(sv);
449 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
450
451 if(got < 0) {
bf357333 452 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
453 abort();
454 }
bf357333
NC
455 if(got < sizeof(sv)) {
456 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
457 abort();
458 }
459
808ad2d0
NC
460 /* Return protocol is
461 int: errno value
462 unsigned char: length of location string (0 for empty)
463 unsigned char*: string (not terminated)
464 */
465 vec[0].iov_base = (void*)&returned_errno;
466 vec[0].iov_len = sizeof(returned_errno);
467 vec[1].iov_base = buffer;
468 vec[1].iov_len = 1;
469
470 got = readv(sock, vec, 2);
41e4abd8
NC
471
472 if(got < 0) {
473 perror("Debug leaking scalars parent read failed");
808ad2d0 474 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
475 abort();
476 }
808ad2d0 477 if(got < sizeof(returned_errno) + 1) {
41e4abd8 478 perror("Debug leaking scalars parent short read");
808ad2d0 479 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
480 abort();
481 }
482
808ad2d0
NC
483 if (*buffer) {
484 got = read(sock, buffer + 1, *buffer);
485 if(got < 0) {
486 perror("Debug leaking scalars parent read 2 failed");
487 PerlIO_flush(PerlIO_stderr());
488 abort();
489 }
490
491 if(got < *buffer) {
492 perror("Debug leaking scalars parent short read 2");
493 PerlIO_flush(PerlIO_stderr());
494 abort();
495 }
496 }
497
498 if (returned_errno || *buffer) {
499 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
500 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
501 returned_errno, strerror(returned_errno));
41e4abd8
NC
502 }
503}
504#endif
505
62375a60 506/*
954c1994
GS
507=for apidoc perl_destruct
508
509Shuts down a Perl interpreter. See L<perlembed>.
510
511=cut
512*/
513
31d77e54 514int
0cb96387 515perl_destruct(pTHXx)
79072805 516{
27da23d5 517 dVAR;
be2ea8ed 518 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 519 HV *hv;
2aa47728 520#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
521 pid_t child;
522#endif
9c0b6888 523 int i;
8990e307 524
7918f24d
NC
525 PERL_ARGS_ASSERT_PERL_DESTRUCT;
526#ifndef MULTIPLICITY
ed6c66dd 527 PERL_UNUSED_ARG(my_perl);
7918f24d 528#endif
9d4ba2ae 529
3d22c4f0
GG
530 assert(PL_scopestack_ix == 1);
531
7766f137
GS
532 /* wait for all pseudo-forked children to finish */
533 PERL_WAIT_FOR_CHILDREN;
534
3280af22 535 destruct_level = PL_perl_destruct_level;
36e77d41 536#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 537 {
9d4ba2ae
AL
538 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
539 if (s) {
36e77d41
DD
540 const int i = atoi(s);
541#ifdef DEBUGGING
542 if (destruct_level < i) destruct_level = i;
543#endif
544#ifdef PERL_TRACK_MEMPOOL
545 /* RT #114496, for perl_free */
546 PL_perl_destruct_level = i;
547#endif
5f05dabc 548 }
4633a7c4
LW
549 }
550#endif
551
27da23d5 552 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
553 dJMPENV;
554 int x = 0;
555
556 JMPENV_PUSH(x);
1b6737cc 557 PERL_UNUSED_VAR(x);
9ebf26ad 558 if (PL_endav && !PL_minus_c) {
ca7b837b 559 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 560 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 561 }
f3faeb53 562 JMPENV_POP;
26f423df 563 }
f3faeb53 564 LEAVE;
a0d0e21e 565 FREETMPS;
3d22c4f0 566 assert(PL_scopestack_ix == 0);
a0d0e21e 567
e00b64d4 568 /* Need to flush since END blocks can produce output */
f13a2bc0 569 my_fflush_all();
e00b64d4 570
16c91539 571 if (PL_threadhook(aTHX)) {
62375a60 572 /* Threads hook has vetoed further cleanup */
c301d606 573 PL_veto_cleanup = TRUE;
37038d91 574 return STATUS_EXIT;
62375a60
NIS
575 }
576
2aa47728
NC
577#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
578 if (destruct_level != 0) {
579 /* Fork here to create a child. Our child's job is to preserve the
580 state of scalars prior to destruction, so that we can instruct it
581 to dump any scalars that we later find have leaked.
582 There's no subtlety in this code - it assumes POSIX, and it doesn't
583 fail gracefully */
584 int fd[2];
585
586 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
587 perror("Debug leaking scalars socketpair failed");
588 abort();
589 }
590
591 child = fork();
592 if(child == -1) {
593 perror("Debug leaking scalars fork failed");
594 abort();
595 }
596 if (!child) {
597 /* We are the child */
3125a5a4
NC
598 const int sock = fd[1];
599 const int debug_fd = PerlIO_fileno(Perl_debug_log);
600 int f;
808ad2d0
NC
601 const char *where;
602 /* Our success message is an integer 0, and a char 0 */
b61433a9 603 static const char success[sizeof(int) + 1] = {0};
3125a5a4 604
2aa47728 605 close(fd[0]);
2aa47728 606
3125a5a4
NC
607 /* We need to close all other file descriptors otherwise we end up
608 with interesting hangs, where the parent closes its end of a
609 pipe, and sits waiting for (another) child to terminate. Only
610 that child never terminates, because it never gets EOF, because
bf357333
NC
611 we also have the far end of the pipe open. We even need to
612 close the debugging fd, because sometimes it happens to be one
613 end of a pipe, and a process is waiting on the other end for
614 EOF. Normally it would be closed at some point earlier in
615 destruction, but if we happen to cause the pipe to remain open,
616 EOF never occurs, and we get an infinite hang. Hence all the
617 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
618
619 f = sysconf(_SC_OPEN_MAX);
620 if(f < 0) {
808ad2d0
NC
621 where = "sysconf failed";
622 goto abort;
3125a5a4
NC
623 }
624 while (f--) {
625 if (f == sock)
626 continue;
3125a5a4
NC
627 close(f);
628 }
629
2aa47728
NC
630 while (1) {
631 SV *target;
bf357333
NC
632 union control_un control;
633 struct msghdr msg;
634 struct iovec vec[1];
635 struct cmsghdr *cmptr;
636 ssize_t got;
637 int got_fd;
638
639 msg.msg_control = control.control;
640 msg.msg_controllen = sizeof(control.control);
641 /* We're a connected socket so we don't need a source */
642 msg.msg_name = NULL;
643 msg.msg_namelen = 0;
644 msg.msg_iov = vec;
645 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
646
647 vec[0].iov_base = (void*)&target;
648 vec[0].iov_len = sizeof(target);
649
650 got = recvmsg(sock, &msg, 0);
2aa47728
NC
651
652 if(got == 0)
653 break;
654 if(got < 0) {
808ad2d0
NC
655 where = "recv failed";
656 goto abort;
2aa47728
NC
657 }
658 if(got < sizeof(target)) {
808ad2d0
NC
659 where = "short recv";
660 goto abort;
2aa47728 661 }
bf357333 662
808ad2d0
NC
663 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
664 where = "no cmsg";
665 goto abort;
666 }
667 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
668 where = "wrong cmsg_len";
669 goto abort;
670 }
671 if(cmptr->cmsg_level != SOL_SOCKET) {
672 where = "wrong cmsg_level";
673 goto abort;
674 }
675 if(cmptr->cmsg_type != SCM_RIGHTS) {
676 where = "wrong cmsg_type";
677 goto abort;
678 }
bf357333
NC
679
680 got_fd = *(int*)CMSG_DATA(cmptr);
681 /* For our last little bit of trickery, put the file descriptor
682 back into Perl_debug_log, as if we never actually closed it
683 */
808ad2d0
NC
684 if(got_fd != debug_fd) {
685 if (dup2(got_fd, debug_fd) == -1) {
686 where = "dup2";
687 goto abort;
688 }
689 }
2aa47728 690 sv_dump(target);
bf357333 691
2aa47728
NC
692 PerlIO_flush(Perl_debug_log);
693
808ad2d0 694 got = write(sock, &success, sizeof(success));
2aa47728
NC
695
696 if(got < 0) {
808ad2d0
NC
697 where = "write failed";
698 goto abort;
2aa47728 699 }
808ad2d0
NC
700 if(got < sizeof(success)) {
701 where = "short write";
702 goto abort;
2aa47728
NC
703 }
704 }
705 _exit(0);
808ad2d0
NC
706 abort:
707 {
708 int send_errno = errno;
709 unsigned char length = (unsigned char) strlen(where);
710 struct iovec failure[3] = {
711 {(void*)&send_errno, sizeof(send_errno)},
712 {&length, 1},
713 {(void*)where, length}
714 };
715 int got = writev(sock, failure, 3);
716 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
717 in the parent if we try to read from the socketpair after the
718 child has exited, even if there was data to read.
719 So sleep a bit to give the parent a fighting chance of
720 reading the data. */
721 sleep(2);
722 _exit((got == -1) ? errno : 0);
723 }
bf357333 724 /* End of child. */
2aa47728 725 }
41e4abd8 726 PL_dumper_fd = fd[0];
2aa47728
NC
727 close(fd[1]);
728 }
729#endif
730
ff0cee69
PP
731 /* We must account for everything. */
732
733 /* Destroy the main CV and syntax tree */
37e77c23
FC
734 /* Set PL_curcop now, because destroying ops can cause new SVs
735 to be generated in Perl_pad_swipe, and when running with
736 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
737 op from which the filename structure member is copied. */
17fbfdf6 738 PL_curcop = &PL_compiling;
3280af22 739 if (PL_main_root) {
4e380990
DM
740 /* ensure comppad/curpad to refer to main's pad */
741 if (CvPADLIST(PL_main_cv)) {
742 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
743 }
3280af22 744 op_free(PL_main_root);
5f66b61c 745 PL_main_root = NULL;
a0d0e21e 746 }
5f66b61c 747 PL_main_start = NULL;
aac9d523
DM
748 /* note that PL_main_cv isn't usually actually freed at this point,
749 * due to the CvOUTSIDE refs from subs compiled within it. It will
750 * get freed once all the subs are freed in sv_clean_all(), for
751 * destruct_level > 0 */
3280af22 752 SvREFCNT_dec(PL_main_cv);
601f1833 753 PL_main_cv = NULL;
ca7b837b 754 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 755
13621cfb
NIS
756 /* Tell PerlIO we are about to tear things apart in case
757 we have layers which are using resources that should
758 be cleaned up now.
759 */
760
761 PerlIO_destruct(aTHX);
762
ddf23d4a
SM
763 /*
764 * Try to destruct global references. We do this first so that the
765 * destructors and destructees still exist. Some sv's might remain.
766 * Non-referenced objects are on their own.
767 */
768 sv_clean_objs();
8990e307 769
5cd24f17 770 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 771 SvREFCNT_dec(PL_warnhook);
a0714e2c 772 PL_warnhook = NULL;
3280af22 773 SvREFCNT_dec(PL_diehook);
a0714e2c 774 PL_diehook = NULL;
5cd24f17 775
4b556e6c 776 /* call exit list functions */
3280af22 777 while (PL_exitlistlen-- > 0)
acfe0abc 778 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 779
3280af22 780 Safefree(PL_exitlist);
4b556e6c 781
1c4916e5
CB
782 PL_exitlist = NULL;
783 PL_exitlistlen = 0;
784
a3e6e81e
NC
785 SvREFCNT_dec(PL_registered_mros);
786
551a8b83 787 /* jettison our possibly duplicated environment */
4b647fb0
DM
788 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
789 * so we certainly shouldn't free it here
790 */
2f42fcb0 791#ifndef PERL_MICRO
4b647fb0 792#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 793 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
794#ifdef USE_ITHREADS
795 /* only main thread can free environ[0] contents */
796 && PL_curinterp == aTHX
797#endif
798 )
799 {
551a8b83
JH
800 I32 i;
801
802 for (i = 0; environ[i]; i++)
4b420006 803 safesysfree(environ[i]);
0631ea03 804
4b420006
JH
805 /* Must use safesysfree() when working with environ. */
806 safesysfree(environ);
551a8b83
JH
807
808 environ = PL_origenviron;
809 }
810#endif
2f42fcb0 811#endif /* !PERL_MICRO */
551a8b83 812
30985c42
JH
813 if (destruct_level == 0) {
814
815 DEBUG_P(debprofdump());
816
817#if defined(PERLIO_LAYERS)
818 /* No more IO - including error messages ! */
819 PerlIO_cleanup(aTHX);
820#endif
821
822 CopFILE_free(&PL_compiling);
30985c42
JH
823
824 /* The exit() function will do everything that needs doing. */
825 return STATUS_EXIT;
826 }
827
5f8cb046
DM
828#ifdef USE_ITHREADS
829 /* the syntax tree is shared between clones
830 * so op_free(PL_main_root) only ReREFCNT_dec's
831 * REGEXPs in the parent interpreter
832 * we need to manually ReREFCNT_dec for the clones
833 */
0547a729
DM
834 {
835 I32 i = AvFILLp(PL_regex_padav);
836 SV **ary = AvARRAY(PL_regex_padav);
837
838 for (; i; i--) {
839 SvREFCNT_dec(ary[i]);
840 ary[i] = &PL_sv_undef;
841 }
842 }
5f8cb046
DM
843#endif
844
0547a729 845
ad64d0ec 846 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
847 PL_stashcache = NULL;
848
5f05dabc
PP
849 /* loosen bonds of global variables */
850
2f9285f8
DM
851 /* XXX can PL_parser still be non-null here? */
852 if(PL_parser && PL_parser->rsfp) {
853 (void)PerlIO_close(PL_parser->rsfp);
854 PL_parser->rsfp = NULL;
8ebc5c01
PP
855 }
856
84386e14
RGS
857 if (PL_minus_F) {
858 Safefree(PL_splitstr);
859 PL_splitstr = NULL;
860 }
861
8ebc5c01 862 /* switches */
3280af22
NIS
863 PL_minus_n = FALSE;
864 PL_minus_p = FALSE;
865 PL_minus_l = FALSE;
866 PL_minus_a = FALSE;
867 PL_minus_F = FALSE;
868 PL_doswitches = FALSE;
599cee73 869 PL_dowarn = G_WARN_OFF;
1a904fc8 870#ifdef PERL_SAWAMPERSAND
d3b97530 871 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 872#endif
3280af22
NIS
873 PL_unsafe = FALSE;
874
875 Safefree(PL_inplace);
bd61b366 876 PL_inplace = NULL;
a7cb1f99 877 SvREFCNT_dec(PL_patchlevel);
1e8125c6 878 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
879
880 if (PL_e_script) {
881 SvREFCNT_dec(PL_e_script);
a0714e2c 882 PL_e_script = NULL;
8ebc5c01
PP
883 }
884
bf9cdc68
RG
885 PL_perldb = 0;
886
8ebc5c01
PP
887 /* magical thingies */
888
e23d9e2f
CS
889 SvREFCNT_dec(PL_ofsgv); /* *, */
890 PL_ofsgv = NULL;
5f05dabc 891
7889fe52 892 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 893 PL_ors_sv = NULL;
8ebc5c01 894
3280af22 895 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 896 PL_rs = NULL;
dc92893f 897
d33b2eba 898 Safefree(PL_osname); /* $^O */
bd61b366 899 PL_osname = NULL;
5f05dabc 900
3280af22 901 SvREFCNT_dec(PL_statname);
a0714e2c
SS
902 PL_statname = NULL;
903 PL_statgv = NULL;
5f05dabc 904
8ebc5c01
PP
905 /* defgv, aka *_ should be taken care of elsewhere */
906
7d5ea4e7
GS
907 /* float buffer */
908 Safefree(PL_efloatbuf);
bd61b366 909 PL_efloatbuf = NULL;
7d5ea4e7
GS
910 PL_efloatsize = 0;
911
8ebc5c01 912 /* startup and shutdown function lists */
3280af22 913 SvREFCNT_dec(PL_beginav);
5a837c8f 914 SvREFCNT_dec(PL_beginav_save);
3280af22 915 SvREFCNT_dec(PL_endav);
7d30b5c4 916 SvREFCNT_dec(PL_checkav);
ece599bd 917 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
918 SvREFCNT_dec(PL_unitcheckav);
919 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 920 SvREFCNT_dec(PL_initav);
7d49f689
NC
921 PL_beginav = NULL;
922 PL_beginav_save = NULL;
923 PL_endav = NULL;
924 PL_checkav = NULL;
925 PL_checkav_save = NULL;
3c10abe3
AG
926 PL_unitcheckav = NULL;
927 PL_unitcheckav_save = NULL;
7d49f689 928 PL_initav = NULL;
5618dfe8 929
8ebc5c01 930 /* shortcuts just get cleared */
a0714e2c
SS
931 PL_envgv = NULL;
932 PL_incgv = NULL;
933 PL_hintgv = NULL;
934 PL_errgv = NULL;
935 PL_argvgv = NULL;
936 PL_argvoutgv = NULL;
937 PL_stdingv = NULL;
938 PL_stderrgv = NULL;
939 PL_last_in_gv = NULL;
940 PL_replgv = NULL;
941 PL_DBgv = NULL;
942 PL_DBline = NULL;
943 PL_DBsub = NULL;
944 PL_DBsingle = NULL;
945 PL_DBtrace = NULL;
946 PL_DBsignal = NULL;
601f1833 947 PL_DBcv = NULL;
7d49f689 948 PL_dbargs = NULL;
5c284bb0 949 PL_debstash = NULL;
8ebc5c01 950
7a1c5554 951 SvREFCNT_dec(PL_argvout_stack);
7d49f689 952 PL_argvout_stack = NULL;
8ebc5c01 953
5c831c24 954 SvREFCNT_dec(PL_modglobal);
5c284bb0 955 PL_modglobal = NULL;
5c831c24 956 SvREFCNT_dec(PL_preambleav);
7d49f689 957 PL_preambleav = NULL;
5c831c24 958 SvREFCNT_dec(PL_subname);
a0714e2c 959 PL_subname = NULL;
ca0c25f6 960#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 961 SvREFCNT_dec(PL_pidstatus);
5c284bb0 962 PL_pidstatus = NULL;
ca0c25f6 963#endif
5c831c24 964 SvREFCNT_dec(PL_toptarget);
a0714e2c 965 PL_toptarget = NULL;
5c831c24 966 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
967 PL_bodytarget = NULL;
968 PL_formtarget = NULL;
5c831c24 969
d33b2eba 970 /* free locale stuff */
b9582b6a 971#ifdef USE_LOCALE_COLLATE
d33b2eba 972 Safefree(PL_collation_name);
bd61b366 973 PL_collation_name = NULL;
b9582b6a 974#endif
d33b2eba 975
b9582b6a 976#ifdef USE_LOCALE_NUMERIC
d33b2eba 977 Safefree(PL_numeric_name);
bd61b366 978 PL_numeric_name = NULL;
a453c169 979 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 980 PL_numeric_radix_sv = NULL;
b9582b6a 981#endif
d33b2eba 982
9c0b6888
KW
983 /* clear character classes */
984 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
985 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
986 PL_utf8_swash_ptrs[i] = NULL;
987 }
5c831c24
GS
988 SvREFCNT_dec(PL_utf8_mark);
989 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 990 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 991 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 992 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
993 SvREFCNT_dec(PL_utf8_idstart);
994 SvREFCNT_dec(PL_utf8_idcont);
2726813d 995 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c
SS
996 PL_utf8_mark = NULL;
997 PL_utf8_toupper = NULL;
998 PL_utf8_totitle = NULL;
999 PL_utf8_tolower = NULL;
1000 PL_utf8_tofold = NULL;
1001 PL_utf8_idstart = NULL;
1002 PL_utf8_idcont = NULL;
2726813d 1003 PL_utf8_foldclosures = NULL;
86f72d56 1004 for (i = 0; i < POSIX_CC_COUNT; i++) {
30f9bdb0
KW
1005 SvREFCNT_dec(PL_Posix_ptrs[i]);
1006 PL_Posix_ptrs[i] = NULL;
1007
86f72d56
KW
1008 SvREFCNT_dec(PL_L1Posix_ptrs[i]);
1009 PL_L1Posix_ptrs[i] = NULL;
cac6e0ca
KW
1010
1011 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1012 PL_XPosix_ptrs[i] = NULL;
86f72d56 1013 }
5c831c24 1014
971a9dd3 1015 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1016 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1017 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1018 cophh_free(CopHINTHASH_get(&PL_compiling));
1019 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1020 CopFILE_free(&PL_compiling);
5c831c24 1021
a0d0e21e 1022 /* Prepare to destruct main symbol table. */
5f05dabc 1023
3280af22 1024 hv = PL_defstash;
ca556bcd
DM
1025 /* break ref loop *:: <=> %:: */
1026 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1027 PL_defstash = 0;
a0d0e21e 1028 SvREFCNT_dec(hv);
5c831c24 1029 SvREFCNT_dec(PL_curstname);
a0714e2c 1030 PL_curstname = NULL;
a0d0e21e 1031
5a844595
GS
1032 /* clear queued errors */
1033 SvREFCNT_dec(PL_errors);
a0714e2c 1034 PL_errors = NULL;
5a844595 1035
dd69841b
BB
1036 SvREFCNT_dec(PL_isarev);
1037
a0d0e21e 1038 FREETMPS;
9b387841 1039 if (destruct_level >= 2) {
3280af22 1040 if (PL_scopestack_ix != 0)
9b387841
NC
1041 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1042 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1043 (long)PL_scopestack_ix);
3280af22 1044 if (PL_savestack_ix != 0)
9b387841
NC
1045 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1046 "Unbalanced saves: %ld more saves than restores\n",
1047 (long)PL_savestack_ix);
3280af22 1048 if (PL_tmps_floor != -1)
9b387841
NC
1049 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1050 (long)PL_tmps_floor + 1);
a0d0e21e 1051 if (cxstack_ix != -1)
9b387841
NC
1052 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1053 (long)cxstack_ix + 1);
a0d0e21e 1054 }
8990e307 1055
0547a729
DM
1056#ifdef USE_ITHREADS
1057 SvREFCNT_dec(PL_regex_padav);
1058 PL_regex_padav = NULL;
1059 PL_regex_pad = NULL;
1060#endif
1061
776df701 1062#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1063 /* the entries in this list are allocated via SV PVX's, so get freed
1064 * in sv_clean_all */
1065 Safefree(PL_my_cxt_list);
776df701 1066#endif
57bb2458 1067
8990e307 1068 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1069
1070 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1071 while (sv_clean_all() > 2)
5226ed68
JH
1072 ;
1073
23083432
FC
1074#ifdef USE_ITHREADS
1075 Safefree(PL_stashpad); /* must come after sv_clean_all */
1076#endif
1077
d4777f27
GS
1078 AvREAL_off(PL_fdpid); /* no surviving entries */
1079 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1080 PL_fdpid = NULL;
d33b2eba 1081
6c644e78
GS
1082#ifdef HAVE_INTERP_INTERN
1083 sys_intern_clear();
1084#endif
1085
a38ab475
RZ
1086 /* constant strings */
1087 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1088 SvREFCNT_dec(PL_sv_consts[i]);
1089 PL_sv_consts[i] = NULL;
1090 }
1091
6e72f9df
PP
1092 /* Destruct the global string table. */
1093 {
1094 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1095 * so that sv_free() won't fail on them.
80459961
NC
1096 * Now that the global string table is using a single hunk of memory
1097 * for both HE and HEK, we either need to explicitly unshare it the
1098 * correct way, or actually free things here.
6e72f9df 1099 */
80459961
NC
1100 I32 riter = 0;
1101 const I32 max = HvMAX(PL_strtab);
c4420975 1102 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1103 HE *hent = array[0];
1104
6e72f9df 1105 for (;;) {
0453d815 1106 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1107 HE * const next = HeNEXT(hent);
9014280d 1108 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1109 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1110 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1111 Safefree(hent);
1112 hent = next;
6e72f9df
PP
1113 }
1114 if (!hent) {
1115 if (++riter > max)
1116 break;
1117 hent = array[riter];
1118 }
1119 }
80459961
NC
1120
1121 Safefree(array);
1122 HvARRAY(PL_strtab) = 0;
1123 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1124 }
3280af22 1125 SvREFCNT_dec(PL_strtab);
6e72f9df 1126
e652bb2f 1127#ifdef USE_ITHREADS
c21d1a0f 1128 /* free the pointer tables used for cloning */
a0739874 1129 ptr_table_free(PL_ptr_table);
bf9cdc68 1130 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1131#endif
a0739874 1132
d33b2eba
GS
1133 /* free special SVs */
1134
1135 SvREFCNT(&PL_sv_yes) = 0;
1136 sv_clear(&PL_sv_yes);
1137 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1138 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1139
1140 SvREFCNT(&PL_sv_no) = 0;
1141 sv_clear(&PL_sv_no);
1142 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1143 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1144
9f375a43
DM
1145 {
1146 int i;
1147 for (i=0; i<=2; i++) {
1148 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1149 sv_clear(PERL_DEBUG_PAD(i));
1150 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1151 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1152 }
1153 }
1154
0453d815 1155 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1156 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1157
eba0f806
DM
1158#ifdef DEBUG_LEAKING_SCALARS
1159 if (PL_sv_count != 0) {
1160 SV* sva;
1161 SV* sv;
eb578fdb 1162 SV* svend;
eba0f806 1163
ad64d0ec 1164 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1165 svend = &sva[SvREFCNT(sva)];
1166 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1167 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1168 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1169 " flags=0x%"UVxf
fd0854ff 1170 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1171 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1172 "serial %"UVuf"\n",
574b8821
NC
1173 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1174 pTHX__VALUE,
fd0854ff
DM
1175 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1176 sv->sv_debug_line,
1177 sv->sv_debug_inpad ? "for" : "by",
1178 sv->sv_debug_optype ?
1179 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1180 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1181 sv->sv_debug_serial
fd0854ff 1182 );
2aa47728 1183#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1184 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1185#endif
eba0f806
DM
1186 }
1187 }
1188 }
1189 }
2aa47728
NC
1190#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1191 {
1192 int status;
1193 fd_set rset;
1194 /* Wait for up to 4 seconds for child to terminate.
1195 This seems to be the least effort way of timing out on reaping
1196 its exit status. */
1197 struct timeval waitfor = {4, 0};
41e4abd8 1198 int sock = PL_dumper_fd;
2aa47728
NC
1199
1200 shutdown(sock, 1);
1201 FD_ZERO(&rset);
1202 FD_SET(sock, &rset);
1203 select(sock + 1, &rset, NULL, NULL, &waitfor);
1204 waitpid(child, &status, WNOHANG);
1205 close(sock);
1206 }
1207#endif
eba0f806 1208#endif
77abb4c6
NC
1209#ifdef DEBUG_LEAKING_SCALARS_ABORT
1210 if (PL_sv_count)
1211 abort();
1212#endif
bf9cdc68 1213 PL_sv_count = 0;
eba0f806 1214
56a2bab7 1215#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1216 /* No more IO - including error messages ! */
1217 PerlIO_cleanup(aTHX);
1218#endif
1219
9f4bd222 1220 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1221 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1222 for no arg - and will try and SvREFCNT_dec it.
1223 */
1224 SvREFCNT(&PL_sv_undef) = 0;
1225 SvREADONLY_off(&PL_sv_undef);
1226
3280af22 1227 Safefree(PL_origfilename);
bd61b366 1228 PL_origfilename = NULL;
43c5f42d 1229 Safefree(PL_reg_curpm);
dd28f7bb 1230 free_tied_hv_pool();
3280af22 1231 Safefree(PL_op_mask);
cf36064f 1232 Safefree(PL_psig_name);
bf9cdc68 1233 PL_psig_name = (SV**)NULL;
d525a7b2 1234 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1235 {
1236 /* We need to NULL PL_psig_pend first, so that
1237 signal handlers know not to use it */
1238 int *psig_save = PL_psig_pend;
1239 PL_psig_pend = (int*)NULL;
1240 Safefree(psig_save);
1241 }
6e72f9df 1242 nuke_stacks();
284167a5
SM
1243 TAINTING_set(FALSE);
1244 TAINT_WARN_set(FALSE);
3280af22 1245 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1246 PL_debug = 0;
ac27b0f5 1247
a0d0e21e 1248 DEBUG_P(debprofdump());
d33b2eba 1249
e5dd39fc 1250#ifdef USE_REENTRANT_API
10bc17b6 1251 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1252#endif
1253
612f20c3
GS
1254 sv_free_arenas();
1255
5d9a96ca
DM
1256 while (PL_regmatch_slab) {
1257 regmatch_slab *s = PL_regmatch_slab;
1258 PL_regmatch_slab = PL_regmatch_slab->next;
1259 Safefree(s);
1260 }
1261
fc36a67e
PP
1262 /* As the absolutely last thing, free the non-arena SV for mess() */
1263
3280af22 1264 if (PL_mess_sv) {
f350b448
NC
1265 /* we know that type == SVt_PVMG */
1266
9c63abab 1267 /* it could have accumulated taint magic */
f350b448
NC
1268 MAGIC* mg;
1269 MAGIC* moremagic;
1270 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1271 moremagic = mg->mg_moremagic;
1272 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1273 && mg->mg_len >= 0)
1274 Safefree(mg->mg_ptr);
1275 Safefree(mg);
9c63abab 1276 }
f350b448 1277
fc36a67e 1278 /* we know that type >= SVt_PV */
8bd4d4c5 1279 SvPV_free(PL_mess_sv);
3280af22
NIS
1280 Safefree(SvANY(PL_mess_sv));
1281 Safefree(PL_mess_sv);
a0714e2c 1282 PL_mess_sv = NULL;
fc36a67e 1283 }
37038d91 1284 return STATUS_EXIT;
79072805
LW
1285}
1286
954c1994
GS
1287/*
1288=for apidoc perl_free
1289
1290Releases a Perl interpreter. See L<perlembed>.
1291
1292=cut
1293*/
1294
79072805 1295void
0cb96387 1296perl_free(pTHXx)
79072805 1297{
5174512c
NC
1298 dVAR;
1299
7918f24d
NC
1300 PERL_ARGS_ASSERT_PERL_FREE;
1301
c301d606
DM
1302 if (PL_veto_cleanup)
1303 return;
1304
7cb608b5 1305#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1306 {
1307 /*
1308 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1309 * value as we're probably hunting memory leaks then
1310 */
36e77d41 1311 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1312 const U32 old_debug = PL_debug;
55ef9aae
MHM
1313 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1314 thread at thread exit. */
4fd0a9b8
NC
1315 if (DEBUG_m_TEST) {
1316 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1317 "free this thread's memory\n");
1318 PL_debug &= ~ DEBUG_m_FLAG;
1319 }
55ef9aae
MHM
1320 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1321 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1322 PL_debug = old_debug;
55ef9aae
MHM
1323 }
1324 }
7cb608b5
NC
1325#endif
1326
acfe0abc 1327#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1328# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1329 {
acfe0abc 1330# ifdef NETWARE
7af12a34 1331 void *host = nw_internal_host;
acfe0abc 1332# else
7af12a34 1333 void *host = w32_internal_host;
acfe0abc 1334# endif
7af12a34 1335 PerlMem_free(aTHXx);
acfe0abc 1336# ifdef NETWARE
7af12a34 1337 nw_delete_internal_host(host);
acfe0abc 1338# else
7af12a34 1339 win32_delete_internal_host(host);
acfe0abc 1340# endif
7af12a34 1341 }
1c0ca838
GS
1342# else
1343 PerlMem_free(aTHXx);
1344# endif
acfe0abc
GS
1345#else
1346 PerlMem_free(aTHXx);
76e3520e 1347#endif
79072805
LW
1348}
1349
b7f7fff6 1350#if defined(USE_ITHREADS)
aebd1ac7
GA
1351/* provide destructors to clean up the thread key when libperl is unloaded */
1352#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1353
826955bd 1354#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1355#pragma fini "perl_fini"
666ad1ec
GA
1356#elif defined(__sun) && !defined(__GNUC__)
1357#pragma fini (perl_fini)
aebd1ac7
GA
1358#endif
1359
0dbb1585
AL
1360static void
1361#if defined(__GNUC__)
1362__attribute__((destructor))
aebd1ac7 1363#endif
de009b76 1364perl_fini(void)
aebd1ac7 1365{
27da23d5 1366 dVAR;
c301d606 1367 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1368 FREE_THREAD_KEY;
1369}
1370
1371#endif /* WIN32 */
1372#endif /* THREADS */
1373
4b556e6c 1374void
864dbfa3 1375Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1376{
97aff369 1377 dVAR;
3280af22
NIS
1378 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1379 PL_exitlist[PL_exitlistlen].fn = fn;
1380 PL_exitlist[PL_exitlistlen].ptr = ptr;
1381 ++PL_exitlistlen;
4b556e6c
JD
1382}
1383
b7975bdd
NC
1384STATIC void
1385S_set_caret_X(pTHX) {
97aff369 1386 dVAR;
fafc274c 1387 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1388 if (tmpgv) {
0f1723e1 1389 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1390#if defined(OS2)
1391 sv_setpv(caret_x, os2_execname(aTHX));
1392#else
2982a345
NC
1393# ifdef USE_KERN_PROC_PATHNAME
1394 size_t size = 0;
1395 int mib[4];
1396 mib[0] = CTL_KERN;
1397 mib[1] = KERN_PROC;
1398 mib[2] = KERN_PROC_PATHNAME;
1399 mib[3] = -1;
1400
1401 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1402 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1403 sv_grow(caret_x, size);
1404
1405 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1406 && size > 2) {
1407 SvPOK_only(caret_x);
1408 SvCUR_set(caret_x, size - 1);
1409 SvTAINT(caret_x);
1410 return;
1411 }
1412 }
ae60cb46
NC
1413# elif defined(USE_NSGETEXECUTABLEPATH)
1414 char buf[1];
1415 uint32_t size = sizeof(buf);
ae60cb46
NC
1416
1417 _NSGetExecutablePath(buf, &size);
1418 if (size < MAXPATHLEN * MAXPATHLEN) {
1419 sv_grow(caret_x, size);
1420 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1421 char *const tidied = realpath(SvPVX(caret_x), NULL);
1422 if (tidied) {
1423 sv_setpv(caret_x, tidied);
1424 free(tidied);
1425 } else {
1426 SvPOK_only(caret_x);
1427 SvCUR_set(caret_x, size);
1428 }
1429 return;
1430 }
1431 }
2982a345 1432# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1433 char buf[MAXPATHLEN];
1434 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1435
1436 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1437 includes a spurious NUL which will cause $^X to fail in system
1438 or backticks (this will prevent extensions from being built and
1439 many tests from working). readlink is not meant to add a NUL.
1440 Normal readlink works fine.
1441 */
1442 if (len > 0 && buf[len-1] == '\0') {
1443 len--;
1444 }
1445
1446 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1447 returning the text "unknown" from the readlink rather than the path
1448 to the executable (or returning an error from the readlink). Any
1449 valid path has a '/' in it somewhere, so use that to validate the
1450 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1451 */
1452 if (len > 0 && memchr(buf, '/', len)) {
1453 sv_setpvn(caret_x, buf, len);
82552a95 1454 return;
700dd4f8 1455 }
82552a95
NC
1456# endif
1457 /* Fallback to this: */
0f1723e1 1458 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1459#endif
b7975bdd
NC
1460 }
1461}
1462
954c1994
GS
1463/*
1464=for apidoc perl_parse
1465
1466Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1467
1468=cut
1469*/
1470
03d9f026
FC
1471#define SET_CURSTASH(newstash) \
1472 if (PL_curstash != newstash) { \
1473 SvREFCNT_dec(PL_curstash); \
1474 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1475 }
1476
79072805 1477int
0cb96387 1478perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1479{
27da23d5 1480 dVAR;
6224f72b 1481 I32 oldscope;
6224f72b 1482 int ret;
db36c5a1 1483 dJMPENV;
8d063cd8 1484
7918f24d
NC
1485 PERL_ARGS_ASSERT_PERL_PARSE;
1486#ifndef MULTIPLICITY
ed6c66dd 1487 PERL_UNUSED_ARG(my_perl);
7918f24d 1488#endif
7dc86639 1489#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1490 {
7dc86639
YO
1491 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1492
1493 if (s && (atoi(s) == 1)) {
1494 unsigned char *seed= PERL_HASH_SEED;
1495 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1496 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1497 while (seed < seed_end) {
1498 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1499 }
6a5b4183
YO
1500#ifdef PERL_HASH_RANDOMIZE_KEYS
1501 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1502 PL_HASH_RAND_BITS_ENABLED,
1503 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1504#endif
7dc86639
YO
1505 PerlIO_printf(Perl_debug_log, "\n");
1506 }
b0891165
JH
1507 }
1508#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1509 PL_origargc = argc;
e2975953 1510 PL_origargv = argv;
a0d0e21e 1511
a2722ac9
GA
1512 if (PL_origalen != 0) {
1513 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1514 }
1515 else {
3cb9023d
JH
1516 /* Set PL_origalen be the sum of the contiguous argv[]
1517 * elements plus the size of the env in case that it is
e9137a8e 1518 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1519 * as the maximum modifiable length of $0. In the worst case
1520 * the area we are able to modify is limited to the size of
43c32782 1521 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1522 * --jhi */
e1ec3a88 1523 const char *s = NULL;
54bfe034 1524 int i;
1b6737cc 1525 const UV mask =
7d8e7db3 1526 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1527 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1528 const UV aligned =
43c32782
JH
1529 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1530
1531 /* See if all the arguments are contiguous in memory. Note
1532 * that 'contiguous' is a loose term because some platforms
1533 * align the argv[] and the envp[]. If the arguments look
1534 * like non-aligned, assume that they are 'strictly' or
1535 * 'traditionally' contiguous. If the arguments look like
1536 * aligned, we just check that they are within aligned
1537 * PTRSIZE bytes. As long as no system has something bizarre
1538 * like the argv[] interleaved with some other data, we are
1539 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1540 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1541 while (*s) s++;
1542 for (i = 1; i < PL_origargc; i++) {
1543 if ((PL_origargv[i] == s + 1
43c32782 1544#ifdef OS2
c8941eeb 1545 || PL_origargv[i] == s + 2
43c32782 1546#endif
c8941eeb
JH
1547 )
1548 ||
1549 (aligned &&
1550 (PL_origargv[i] > s &&
1551 PL_origargv[i] <=
1552 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1553 )
1554 {
1555 s = PL_origargv[i];
1556 while (*s) s++;
1557 }
1558 else
1559 break;
54bfe034 1560 }
54bfe034 1561 }
a4a109c2
JD
1562
1563#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1564 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1565 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1566 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1567 ||
1568 (aligned &&
1569 (PL_origenviron[0] > s &&
1570 PL_origenviron[0] <=
1571 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1572 )
1573 {
9d419b5f 1574#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1575 s = PL_origenviron[0];
1576 while (*s) s++;
1577#endif
bd61b366 1578 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1579 /* Force copy of environment. */
1580 for (i = 1; PL_origenviron[i]; i++) {
1581 if (PL_origenviron[i] == s + 1
1582 ||
1583 (aligned &&
1584 (PL_origenviron[i] > s &&
1585 PL_origenviron[i] <=
1586 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1587 )
1588 {
1589 s = PL_origenviron[i];
1590 while (*s) s++;
1591 }
1592 else
1593 break;
54bfe034 1594 }
43c32782 1595 }
54bfe034 1596 }
a4a109c2
JD
1597#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1598
2d2af554 1599 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1600 }
1601
3280af22 1602 if (PL_do_undump) {
a0d0e21e
LW
1603
1604 /* Come here if running an undumped a.out. */
1605
3280af22
NIS
1606 PL_origfilename = savepv(argv[0]);
1607 PL_do_undump = FALSE;
a0d0e21e 1608 cxstack_ix = -1; /* start label stack again */
748a9306 1609 init_ids();
284167a5 1610 assert (!TAINT_get);
b7975bdd
NC
1611 TAINT;
1612 S_set_caret_X(aTHX);
1613 TAINT_NOT;
a0d0e21e
LW
1614 init_postdump_symbols(argc,argv,env);
1615 return 0;
1616 }
1617
3280af22 1618 if (PL_main_root) {
3280af22 1619 op_free(PL_main_root);
5f66b61c 1620 PL_main_root = NULL;
ff0cee69 1621 }
5f66b61c 1622 PL_main_start = NULL;
3280af22 1623 SvREFCNT_dec(PL_main_cv);
601f1833 1624 PL_main_cv = NULL;
79072805 1625
3280af22
NIS
1626 time(&PL_basetime);
1627 oldscope = PL_scopestack_ix;
599cee73 1628 PL_dowarn = G_WARN_OFF;
f86702cc 1629
14dd3ad8 1630 JMPENV_PUSH(ret);
6224f72b 1631 switch (ret) {
312caa8e 1632 case 0:
14dd3ad8 1633 parse_body(env,xsinit);
9ebf26ad 1634 if (PL_unitcheckav) {
3c10abe3 1635 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1636 }
1637 if (PL_checkav) {
ca7b837b 1638 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1639 call_list(oldscope, PL_checkav);
9ebf26ad 1640 }
14dd3ad8
GS
1641 ret = 0;
1642 break;
6224f72b
GS
1643 case 1:
1644 STATUS_ALL_FAILURE;
1645 /* FALL THROUGH */
1646 case 2:
1647 /* my_exit() was called */
3280af22 1648 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1649 LEAVE;
1650 FREETMPS;
03d9f026 1651 SET_CURSTASH(PL_defstash);
9ebf26ad 1652 if (PL_unitcheckav) {
3c10abe3 1653 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1654 }
1655 if (PL_checkav) {
ca7b837b 1656 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1657 call_list(oldscope, PL_checkav);
9ebf26ad 1658 }
37038d91 1659 ret = STATUS_EXIT;
14dd3ad8 1660 break;
6224f72b 1661 case 3:
bf49b057 1662 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1663 ret = 1;
1664 break;
6224f72b 1665 }
14dd3ad8
GS
1666 JMPENV_POP;
1667 return ret;
1668}
1669
4a5df386
NC
1670/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1671 miniperl, and we need to see those flags reflected in the values here. */
1672
1673/* What this returns is subject to change. Use the public interface in Config.
1674 */
1675static void
1676S_Internals_V(pTHX_ CV *cv)
1677{
1678 dXSARGS;
1679#ifdef LOCAL_PATCH_COUNT
1680 const int local_patch_count = LOCAL_PATCH_COUNT;
1681#else
1682 const int local_patch_count = 0;
1683#endif
2dc296d2 1684 const int entries = 3 + local_patch_count;
4a5df386 1685 int i;
fe1c5936 1686 static const char non_bincompat_options[] =
4a5df386
NC
1687# ifdef DEBUGGING
1688 " DEBUGGING"
1689# endif
1690# ifdef NO_MATHOMS
0d311fbe 1691 " NO_MATHOMS"
4a5df386 1692# endif
59b86f4b
DM
1693# ifdef NO_HASH_SEED
1694 " NO_HASH_SEED"
1695# endif
3b0e4ee2
MB
1696# ifdef NO_TAINT_SUPPORT
1697 " NO_TAINT_SUPPORT"
1698# endif
4a5df386
NC
1699# ifdef PERL_DISABLE_PMC
1700 " PERL_DISABLE_PMC"
1701# endif
1702# ifdef PERL_DONT_CREATE_GVSV
1703 " PERL_DONT_CREATE_GVSV"
1704# endif
9a044a43
NC
1705# ifdef PERL_EXTERNAL_GLOB
1706 " PERL_EXTERNAL_GLOB"
1707# endif
59b86f4b
DM
1708# ifdef PERL_HASH_FUNC_SIPHASH
1709 " PERL_HASH_FUNC_SIPHASH"
1710# endif
1711# ifdef PERL_HASH_FUNC_SDBM
1712 " PERL_HASH_FUNC_SDBM"
1713# endif
1714# ifdef PERL_HASH_FUNC_DJB2
1715 " PERL_HASH_FUNC_DJB2"
1716# endif
1717# ifdef PERL_HASH_FUNC_SUPERFAST
1718 " PERL_HASH_FUNC_SUPERFAST"
1719# endif
1720# ifdef PERL_HASH_FUNC_MURMUR3
1721 " PERL_HASH_FUNC_MURMUR3"
1722# endif
1723# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1724 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1725# endif
1726# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1727 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1728# endif
1729# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1730 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1731# endif
4a5df386
NC
1732# ifdef PERL_IS_MINIPERL
1733 " PERL_IS_MINIPERL"
1734# endif
1735# ifdef PERL_MALLOC_WRAP
1736 " PERL_MALLOC_WRAP"
1737# endif
1738# ifdef PERL_MEM_LOG
1739 " PERL_MEM_LOG"
1740# endif
1741# ifdef PERL_MEM_LOG_NOIMPL
1742 " PERL_MEM_LOG_NOIMPL"
1743# endif
2542212d
DM
1744# ifdef PERL_NEW_COPY_ON_WRITE
1745 " PERL_NEW_COPY_ON_WRITE"
1746# endif
59b86f4b
DM
1747# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1748 " PERL_PERTURB_KEYS_DETERMINISTIC"
1749# endif
1750# ifdef PERL_PERTURB_KEYS_DISABLED
1751 " PERL_PERTURB_KEYS_DISABLED"
1752# endif
1753# ifdef PERL_PERTURB_KEYS_RANDOM
1754 " PERL_PERTURB_KEYS_RANDOM"
1755# endif
c3cf41ec
NC
1756# ifdef PERL_PRESERVE_IVUV
1757 " PERL_PRESERVE_IVUV"
1758# endif
c051e30b
NC
1759# ifdef PERL_RELOCATABLE_INCPUSH
1760 " PERL_RELOCATABLE_INCPUSH"
1761# endif
4a5df386
NC
1762# ifdef PERL_USE_DEVEL
1763 " PERL_USE_DEVEL"
1764# endif
1765# ifdef PERL_USE_SAFE_PUTENV
1766 " PERL_USE_SAFE_PUTENV"
1767# endif
a3749cf3
NC
1768# ifdef UNLINK_ALL_VERSIONS
1769 " UNLINK_ALL_VERSIONS"
1770# endif
de618ee4
NC
1771# ifdef USE_ATTRIBUTES_FOR_PERLIO
1772 " USE_ATTRIBUTES_FOR_PERLIO"
1773# endif
4a5df386
NC
1774# ifdef USE_FAST_STDIO
1775 " USE_FAST_STDIO"
1776# endif
59b86f4b
DM
1777# ifdef USE_HASH_SEED_EXPLICIT
1778 " USE_HASH_SEED_EXPLICIT"
1779# endif
98548bdf
NC
1780# ifdef USE_LOCALE
1781 " USE_LOCALE"
1782# endif
98548bdf
NC
1783# ifdef USE_LOCALE_CTYPE
1784 " USE_LOCALE_CTYPE"
1785# endif
5a8d8935
NC
1786# ifdef USE_PERL_ATOF
1787 " USE_PERL_ATOF"
1788# endif
0d311fbe
NC
1789# ifdef USE_SITECUSTOMIZE
1790 " USE_SITECUSTOMIZE"
1791# endif
4a5df386
NC
1792 ;
1793 PERL_UNUSED_ARG(cv);
1794 PERL_UNUSED_ARG(items);
1795
1796 EXTEND(SP, entries);
1797
1798 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1799 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1800 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1801
1802#ifdef __DATE__
1803# ifdef __TIME__
1804 PUSHs(Perl_newSVpvn_flags(aTHX_
1805 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1806 SVs_TEMP));
1807# else
1808 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1809 SVs_TEMP));
1810# endif
1811#else
1812 PUSHs(&PL_sv_undef);
1813#endif
1814
4a5df386
NC
1815 for (i = 1; i <= local_patch_count; i++) {
1816 /* This will be an undef, if PL_localpatches[i] is NULL. */
1817 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1818 }
1819
1820 XSRETURN(entries);
1821}
1822
be71fc8f
NC
1823#define INCPUSH_UNSHIFT 0x01
1824#define INCPUSH_ADD_OLD_VERS 0x02
1825#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1826#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1827#define INCPUSH_NOT_BASEDIR 0x10
1828#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1829#define INCPUSH_ADD_SUB_DIRS \
1830 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1831
312caa8e 1832STATIC void *
14dd3ad8 1833S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1834{
27da23d5 1835 dVAR;
2f9285f8 1836 PerlIO *rsfp;
312caa8e 1837 int argc = PL_origargc;
8f42b153 1838 char **argv = PL_origargv;
e1ec3a88 1839 const char *scriptname = NULL;
312caa8e 1840 VOL bool dosearch = FALSE;
eb578fdb 1841 char c;
737c24fc 1842 bool doextract = FALSE;
bd61b366 1843 const char *cddir = NULL;
ab019eaa 1844#ifdef USE_SITECUSTOMIZE
20ef40cf 1845 bool minus_f = FALSE;
ab019eaa 1846#endif
95670bde 1847 SV *linestr_sv = NULL;
5486870f 1848 bool add_read_e_script = FALSE;
87606032 1849 U32 lex_start_flags = 0;
009d90df 1850
ca7b837b 1851 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1852
6224f72b 1853 init_main_stash();
54310121 1854
c7030b81
NC
1855 {
1856 const char *s;
6224f72b
GS
1857 for (argc--,argv++; argc > 0; argc--,argv++) {
1858 if (argv[0][0] != '-' || !argv[0][1])
1859 break;
6224f72b
GS
1860 s = argv[0]+1;
1861 reswitch:
47f56822 1862 switch ((c = *s)) {
729a02f2 1863 case 'C':
1d5472a9
GS
1864#ifndef PERL_STRICT_CR
1865 case '\r':
1866#endif
6224f72b
GS
1867 case ' ':
1868 case '0':
1869 case 'F':
1870 case 'a':
1871 case 'c':
1872 case 'd':
1873 case 'D':
1874 case 'h':
1875 case 'i':
1876 case 'l':
1877 case 'M':
1878 case 'm':
1879 case 'n':
1880 case 'p':
1881 case 's':
1882 case 'u':
1883 case 'U':
1884 case 'v':
599cee73
PM
1885 case 'W':
1886 case 'X':
6224f72b 1887 case 'w':
97bd5664 1888 if ((s = moreswitches(s)))
6224f72b
GS
1889 goto reswitch;
1890 break;
33b78306 1891
1dbad523 1892 case 't':
284167a5
SM
1893#if SILENT_NO_TAINT_SUPPORT
1894 /* silently ignore */
1895#elif NO_TAINT_SUPPORT
3231f579 1896 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1897 "Cowardly refusing to run with -t or -T flags");
1898#else
22f7c9c9 1899 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1900 if( !TAINTING_get ) {
1901 TAINT_WARN_set(TRUE);
1902 TAINTING_set(TRUE);
317ea90d 1903 }
284167a5 1904#endif
317ea90d
MS
1905 s++;
1906 goto reswitch;
6224f72b 1907 case 'T':
284167a5
SM
1908#if SILENT_NO_TAINT_SUPPORT
1909 /* silently ignore */
1910#elif NO_TAINT_SUPPORT
3231f579 1911 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1912 "Cowardly refusing to run with -t or -T flags");
1913#else
22f7c9c9 1914 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1915 TAINTING_set(TRUE);
1916 TAINT_WARN_set(FALSE);
1917#endif
6224f72b
GS
1918 s++;
1919 goto reswitch;
f86702cc 1920
bc9b29db
RH
1921 case 'E':
1922 PL_minus_E = TRUE;
1923 /* FALL THROUGH */
6224f72b 1924 case 'e':
f20b2998 1925 forbid_setid('e', FALSE);
3280af22 1926 if (!PL_e_script) {
396482e1 1927 PL_e_script = newSVpvs("");
5486870f 1928 add_read_e_script = TRUE;
6224f72b
GS
1929 }
1930 if (*++s)
3280af22 1931 sv_catpv(PL_e_script, s);
6224f72b 1932 else if (argv[1]) {
3280af22 1933 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1934 argc--,argv++;
1935 }
1936 else
47f56822 1937 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1938 sv_catpvs(PL_e_script, "\n");
6224f72b 1939 break;
afe37c7d 1940
20ef40cf 1941 case 'f':
f5542d3a 1942#ifdef USE_SITECUSTOMIZE
20ef40cf 1943 minus_f = TRUE;
f5542d3a 1944#endif
20ef40cf
GA
1945 s++;
1946 goto reswitch;
1947
6224f72b 1948 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1949 forbid_setid('I', FALSE);
bd61b366 1950 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1951 argc--,argv++;
1952 }
6224f72b 1953 if (s && *s) {
0df16ed7 1954 STRLEN len = strlen(s);
55b4bc1c 1955 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1956 }
1957 else
a67e862a 1958 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1959 break;
6224f72b 1960 case 'S':
f20b2998 1961 forbid_setid('S', FALSE);
6224f72b
GS
1962 dosearch = TRUE;
1963 s++;
1964 goto reswitch;
1965 case 'V':
7edfd0ef
NC
1966 {
1967 SV *opts_prog;
1968
7edfd0ef 1969 if (*++s != ':') {
37ca4a5b 1970 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1971 }
1972 else {
1973 ++s;
1974 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1975 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1976 0, s, 0);
1977 s += strlen(s);
1978 }
37ca4a5b 1979 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1980 /* don't look for script or read stdin */
1981 scriptname = BIT_BUCKET;
1982 goto reswitch;
6224f72b 1983 }
6224f72b 1984 case 'x':
737c24fc 1985 doextract = TRUE;
6224f72b 1986 s++;
304334da 1987 if (*s)
f4c556ac 1988 cddir = s;
6224f72b
GS
1989 break;
1990 case 0:
1991 break;
1992 case '-':
1993 if (!*++s || isSPACE(*s)) {
1994 argc--,argv++;
1995 goto switch_end;
1996 }
ee8bc8b7
NC
1997 /* catch use of gnu style long options.
1998 Both of these exit immediately. */
1999 if (strEQ(s, "version"))
2000 minus_v();
2001 if (strEQ(s, "help"))
2002 usage();
6224f72b
GS
2003 s--;
2004 /* FALL THROUGH */
2005 default:
cea2e8a9 2006 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2007 }
2008 }
c7030b81
NC
2009 }
2010
6224f72b 2011 switch_end:
54310121 2012
c7030b81
NC
2013 {
2014 char *s;
2015
f675dbe5
CB
2016 if (
2017#ifndef SECURE_INTERNAL_GETENV
284167a5 2018 !TAINTING_get &&
f675dbe5 2019#endif
cf756827 2020 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2021 {
74288ac8
GS
2022 while (isSPACE(*s))
2023 s++;
317ea90d 2024 if (*s == '-' && *(s+1) == 'T') {
284167a5
SM
2025#if SILENT_NO_TAINT_SUPPORT
2026 /* silently ignore */
2027#elif NO_TAINT_SUPPORT
3231f579 2028 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2029 "Cowardly refusing to run with -t or -T flags");
2030#else
22f7c9c9 2031 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2032 TAINTING_set(TRUE);
2033 TAINT_WARN_set(FALSE);
2034#endif
317ea90d 2035 }
74288ac8 2036 else {
bd61b366 2037 char *popt_copy = NULL;
74288ac8 2038 while (s && *s) {
54913509 2039 const char *d;
74288ac8
GS
2040 while (isSPACE(*s))
2041 s++;
2042 if (*s == '-') {
2043 s++;
2044 if (isSPACE(*s))
2045 continue;
2046 }
4ea8f8fb 2047 d = s;
74288ac8
GS
2048 if (!*s)
2049 break;
2b622f1a 2050 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2051 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2052 while (++s && *s) {
2053 if (isSPACE(*s)) {
cf756827 2054 if (!popt_copy) {
bfa6c418
NC
2055 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2056 s = popt_copy + (s - d);
2057 d = popt_copy;
cf756827 2058 }
4ea8f8fb
MS
2059 *s++ = '\0';
2060 break;
2061 }
2062 }
1c4db469 2063 if (*d == 't') {
284167a5
SM
2064#if SILENT_NO_TAINT_SUPPORT
2065 /* silently ignore */
2066#elif NO_TAINT_SUPPORT
3231f579 2067 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2068 "Cowardly refusing to run with -t or -T flags");
2069#else
2070 if( !TAINTING_get) {
2071 TAINT_WARN_set(TRUE);
2072 TAINTING_set(TRUE);
317ea90d 2073 }
284167a5 2074#endif
1c4db469 2075 } else {
97bd5664 2076 moreswitches(d);
1c4db469 2077 }
6224f72b 2078 }
6224f72b
GS
2079 }
2080 }
c7030b81 2081 }
a0d0e21e 2082
c29067d7
CH
2083 /* Set $^X early so that it can be used for relocatable paths in @INC */
2084 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2085 assert (!TAINT_get);
c29067d7
CH
2086 TAINT;
2087 S_set_caret_X(aTHX);
2088 TAINT_NOT;
2089
43c0c913 2090#if defined(USE_SITECUSTOMIZE)
20ef40cf 2091 if (!minus_f) {
43c0c913 2092 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2093 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2094 ie a q() operator with a NUL byte as a the delimiter. This avoids
2095 problems with pathnames containing (say) ' */
43c0c913
NC
2096# ifdef PERL_IS_MINIPERL
2097 AV *const inc = GvAV(PL_incgv);
2098 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2099
2100 if (inc0) {
15870c5c
NC
2101 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2102 it should be reported immediately as a build failure. */
43c0c913
NC
2103 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2104 Perl_newSVpvf(aTHX_
15870c5c 2105 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} and do q%c%"SVf"/buildcustomize.pl%c || die $@ }",
fc81b718
NC
2106 0, *inc0, 0,
2107 0, *inc0, 0));
43c0c913
NC
2108 }
2109# else
2110 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2111 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2112 if (raw_sitelib) {
2113 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2114 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2115 INCPUSH_CAN_RELOCATE);
2116 const char *const sitelib = SvPVX(sitelib_sv);
2117 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2118 Perl_newSVpvf(aTHX_
2119 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2120 0, sitelib, 0,
2121 0, sitelib, 0));
2122 assert (SvREFCNT(sitelib_sv) == 1);
2123 SvREFCNT_dec(sitelib_sv);
2124 }
43c0c913 2125# endif
20ef40cf
GA
2126 }
2127#endif
2128
6224f72b
GS
2129 if (!scriptname)
2130 scriptname = argv[0];
3280af22 2131 if (PL_e_script) {
6224f72b
GS
2132 argc++,argv--;
2133 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2134 }
bd61b366 2135 else if (scriptname == NULL) {
6224f72b
GS
2136#ifdef MSDOS
2137 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2138 moreswitches("h");
6224f72b
GS
2139#endif
2140 scriptname = "-";
2141 }
2142
284167a5 2143 assert (!TAINT_get);
2cace6ac 2144 init_perllib();
6224f72b 2145
a52eba0e 2146 {
f20b2998 2147 bool suidscript = FALSE;
829372d3 2148
8d113837 2149 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2150 if (!rsfp) {
2151 rsfp = PerlIO_stdin();
87606032 2152 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2153 }
6224f72b 2154
b24bc095 2155 validate_suid(rsfp);
6224f72b 2156
64ca3a65 2157#ifndef PERL_MICRO
a52eba0e
NC
2158# if defined(SIGCHLD) || defined(SIGCLD)
2159 {
2160# ifndef SIGCHLD
2161# define SIGCHLD SIGCLD
2162# endif
2163 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2164 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2165 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2166 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2167 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2168 }
0b5b802d 2169 }
a52eba0e 2170# endif
64ca3a65 2171#endif
0b5b802d 2172
737c24fc 2173 if (doextract) {
faef540c 2174
f20b2998 2175 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2176 setuid scripts. */
2177 forbid_setid('x', suidscript);
f20b2998 2178 /* Hence you can't get here if suidscript is true */
faef540c 2179
95670bde
NC
2180 linestr_sv = newSV_type(SVt_PV);
2181 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2182 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2183 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2184 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2185 }
f4c556ac 2186 }
6224f72b 2187
ea726b52 2188 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2189 CvUNIQUE_on(PL_compcv);
2190
dd2155a4 2191 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2192
dd69841b
BB
2193 PL_isarev = newHV();
2194
0c4f7ff0 2195 boot_core_PerlIO();
6224f72b 2196 boot_core_UNIVERSAL();
e1a479c5 2197 boot_core_mro();
4a5df386 2198 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2199
2200 if (xsinit)
acfe0abc 2201 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2202#ifndef PERL_MICRO
739a0b84 2203#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2204 init_os_extras();
6224f72b 2205#endif
64ca3a65 2206#endif
6224f72b 2207
29209bc5 2208#ifdef USE_SOCKS
1b9c9cf5
DH
2209# ifdef HAS_SOCKS5_INIT
2210 socks5_init(argv[0]);
2211# else
29209bc5 2212 SOCKSinit(argv[0]);
1b9c9cf5 2213# endif
ac27b0f5 2214#endif
29209bc5 2215
6224f72b
GS
2216 init_predump_symbols();
2217 /* init_postdump_symbols not currently designed to be called */
2218 /* more than once (ENV isn't cleared first, for example) */
2219 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2220 if (!PL_do_undump)
6224f72b
GS
2221 init_postdump_symbols(argc,argv,env);
2222
27da23d5
JH
2223 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2224 * or explicitly in some platforms.
085a54d9 2225 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2226 * look like the user wants to use UTF-8. */
a0fd4948 2227#if defined(__SYMBIAN32__)
27da23d5
JH
2228 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2229#endif
e27b5b51 2230# ifndef PERL_IS_MINIPERL
06e66572
JH
2231 if (PL_unicode) {
2232 /* Requires init_predump_symbols(). */
a05d7ebb 2233 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2234 IO* io;
2235 PerlIO* fp;
2236 SV* sv;
2237
a05d7ebb 2238 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2239 * and the default open disciplines. */
a05d7ebb
JH
2240 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2241 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2242 (fp = IoIFP(io)))
2243 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2244 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2245 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2246 (fp = IoOFP(io)))
2247 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2248 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2249 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2250 (fp = IoOFP(io)))
2251 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2252 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2253 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2254 SVt_PV)))) {
a05d7ebb
JH
2255 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2256 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2257 if (in) {
2258 if (out)
76f68e9b 2259 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2260 else
76f68e9b 2261 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2262 }
2263 else if (out)
76f68e9b 2264 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2265 SvSETMAGIC(sv);
2266 }
b310b053
JH
2267 }
2268 }
e27b5b51 2269#endif
b310b053 2270
c7030b81
NC
2271 {
2272 const char *s;
4ffa73a3
JH
2273 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2274 if (strEQ(s, "unsafe"))
2275 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2276 else if (strEQ(s, "safe"))
2277 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2278 else
2279 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2280 }
c7030b81 2281 }
4ffa73a3 2282
81d86705 2283#ifdef PERL_MAD
c7030b81
NC
2284 {
2285 const char *s;
284167a5 2286 if (!TAINTING_get &&
2cc12391 2287 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC
2288 PL_madskills = 1;
2289 PL_minus_c = 1;
2290 if (!s || !s[0])
2291 PL_xmlfp = PerlIO_stdout();
2292 else {
2293 PL_xmlfp = PerlIO_open(s, "w");
2294 if (!PL_xmlfp)
2295 Perl_croak(aTHX_ "Can't open %s", s);
2296 }
1a9a51d4 2297 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2298 }
c7030b81
NC
2299 }
2300
2301 {
2302 const char *s;
81d86705
NC
2303 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2304 PL_madskills = atoi(s);
1a9a51d4 2305 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2306 }
c7030b81 2307 }
81d86705
NC
2308#endif
2309
87606032 2310 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2311 SvREFCNT_dec(linestr_sv);
95670bde 2312
219f7226 2313 PL_subname = newSVpvs("main");
6224f72b 2314
5486870f
DM
2315 if (add_read_e_script)
2316 filter_add(read_e_script, NULL);
2317
6224f72b
GS
2318 /* now parse the script */
2319
93189314 2320 SETERRNO(0,SS_NORMAL);
28ac2b49 2321 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2322 if (PL_minus_c)
cea2e8a9 2323 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2324 else {
cea2e8a9 2325 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2326 PL_origfilename);
6224f72b
GS
2327 }
2328 }
57843af0 2329 CopLINE_set(PL_curcop, 0);
03d9f026 2330 SET_CURSTASH(PL_defstash);
3280af22
NIS
2331 if (PL_e_script) {
2332 SvREFCNT_dec(PL_e_script);
a0714e2c 2333 PL_e_script = NULL;
6224f72b
GS
2334 }
2335
3280af22 2336 if (PL_do_undump)
6224f72b
GS
2337 my_unexec();
2338
57843af0
GS
2339 if (isWARN_ONCE) {
2340 SAVECOPFILE(PL_curcop);
2341 SAVECOPLINE(PL_curcop);
3280af22 2342 gv_check(PL_defstash);
57843af0 2343 }
6224f72b
GS
2344
2345 LEAVE;
2346 FREETMPS;
2347
2348#ifdef MYMALLOC
f6a607bc
RGS
2349 {
2350 const char *s;
6224f72b
GS
2351 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2352 dump_mstats("after compilation:");
f6a607bc 2353 }
6224f72b
GS
2354#endif
2355
2356 ENTER;
febb3a6d 2357 PL_restartjmpenv = NULL;
3280af22 2358 PL_restartop = 0;
312caa8e 2359 return NULL;
6224f72b
GS
2360}
2361
954c1994
GS
2362/*
2363=for apidoc perl_run
2364
2365Tells a Perl interpreter to run. See L<perlembed>.
2366
2367=cut
2368*/
2369
6224f72b 2370int
0cb96387 2371perl_run(pTHXx)
6224f72b 2372{
97aff369 2373 dVAR;
6224f72b 2374 I32 oldscope;
14dd3ad8 2375 int ret = 0;
db36c5a1 2376 dJMPENV;
6224f72b 2377
7918f24d
NC
2378 PERL_ARGS_ASSERT_PERL_RUN;
2379#ifndef MULTIPLICITY
ed6c66dd 2380 PERL_UNUSED_ARG(my_perl);
7918f24d 2381#endif
9d4ba2ae 2382
3280af22 2383 oldscope = PL_scopestack_ix;
96e176bf
CL
2384#ifdef VMS
2385 VMSISH_HUSHED = 0;
2386#endif
6224f72b 2387
14dd3ad8 2388 JMPENV_PUSH(ret);
6224f72b
GS
2389 switch (ret) {
2390 case 1:
2391 cxstack_ix = -1; /* start context stack again */
312caa8e 2392 goto redo_body;
14dd3ad8 2393 case 0: /* normal completion */
14dd3ad8
GS
2394 redo_body:
2395 run_body(oldscope);
14dd3ad8
GS
2396 /* FALL THROUGH */
2397 case 2: /* my_exit() */
3280af22 2398 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2399 LEAVE;
2400 FREETMPS;
03d9f026 2401 SET_CURSTASH(PL_defstash);
3a1ee7e8 2402 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2403 PL_endav && !PL_minus_c) {
ca7b837b 2404 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2405 call_list(oldscope, PL_endav);
9ebf26ad 2406 }
6224f72b
GS
2407#ifdef MYMALLOC
2408 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2409 dump_mstats("after execution: ");
2410#endif
37038d91 2411 ret = STATUS_EXIT;
14dd3ad8 2412 break;
6224f72b 2413 case 3:
312caa8e
CS
2414 if (PL_restartop) {
2415 POPSTACK_TO(PL_mainstack);
2416 goto redo_body;
6224f72b 2417 }
5637ef5b 2418 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2419 FREETMPS;
14dd3ad8
GS
2420 ret = 1;
2421 break;
6224f72b
GS
2422 }
2423
14dd3ad8
GS
2424 JMPENV_POP;
2425 return ret;
312caa8e
CS
2426}
2427
dd374669 2428STATIC void
14dd3ad8
GS
2429S_run_body(pTHX_ I32 oldscope)
2430{
97aff369 2431 dVAR;
d3b97530
DM
2432 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2433 PL_sawampersand ? "Enabling" : "Omitting",
2434 (unsigned int)(PL_sawampersand)));
6224f72b 2435
3280af22 2436 if (!PL_restartop) {
81d86705
NC
2437#ifdef PERL_MAD
2438 if (PL_xmlfp) {
2439 xmldump_all();
2440 exit(0); /* less likely to core dump than my_exit(0) */
2441 }
2442#endif
cf2782cd 2443#ifdef DEBUGGING
f0e3f042
CS
2444 if (DEBUG_x_TEST || DEBUG_B_TEST)
2445 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2446 if (!DEBUG_q_TEST)
2447 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2448#endif
6224f72b 2449
3280af22 2450 if (PL_minus_c) {
bf49b057 2451 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2452 my_exit(0);
2453 }
3280af22 2454 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2455 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2456 if (PL_initav) {
ca7b837b 2457 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2458 call_list(oldscope, PL_initav);
9ebf26ad 2459 }
f1fac472 2460#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2461 if (PL_main_root && PL_main_root->op_slabbed)
2462 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2463#endif
6224f72b
GS
2464 }
2465
2466 /* do it */
2467
ca7b837b 2468 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2469
3280af22 2470 if (PL_restartop) {
febb3a6d 2471 PL_restartjmpenv = NULL;
533c011a 2472 PL_op = PL_restartop;
3280af22 2473 PL_restartop = 0;
cea2e8a9 2474 CALLRUNOPS(aTHX);
6224f72b 2475 }
3280af22
NIS
2476 else if (PL_main_start) {
2477 CvDEPTH(PL_main_cv) = 1;
533c011a 2478 PL_op = PL_main_start;
cea2e8a9 2479 CALLRUNOPS(aTHX);
6224f72b 2480 }
f6b3007c 2481 my_exit(0);
118e2215 2482 assert(0); /* NOTREACHED */
6224f72b
GS
2483}
2484
954c1994 2485/*
ccfc67b7
JH
2486=head1 SV Manipulation Functions
2487
954c1994
GS
2488=for apidoc p||get_sv
2489
64ace3f8
NC
2490Returns the SV of the specified Perl scalar. C<flags> are passed to
2491C<gv_fetchpv>. If C<GV_ADD> is set and the
2492Perl variable does not exist then it will be created. If C<flags> is zero
2493and the variable does not exist then NULL is returned.
954c1994
GS
2494
2495=cut
2496*/
2497
6224f72b 2498SV*
64ace3f8 2499Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2500{
2501 GV *gv;
7918f24d
NC
2502
2503 PERL_ARGS_ASSERT_GET_SV;
2504
64ace3f8 2505 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2506 if (gv)
2507 return GvSV(gv);
a0714e2c 2508 return NULL;
6224f72b
GS
2509}
2510
954c1994 2511/*
ccfc67b7
JH
2512=head1 Array Manipulation Functions
2513
954c1994
GS
2514=for apidoc p||get_av
2515
f0b90de1
SF
2516Returns the AV of the specified Perl global or package array with the given
2517name (so it won't work on lexical variables). C<flags> are passed
2518to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2519Perl variable does not exist then it will be created. If C<flags> is zero
2520and the variable does not exist then NULL is returned.
954c1994 2521
f0b90de1
SF
2522Perl equivalent: C<@{"$name"}>.
2523
954c1994
GS
2524=cut
2525*/
2526
6224f72b 2527AV*
cbfd0a87 2528Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2529{
cbfd0a87 2530 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2531
2532 PERL_ARGS_ASSERT_GET_AV;
2533
cbfd0a87 2534 if (flags)
6224f72b
GS
2535 return GvAVn(gv);
2536 if (gv)
2537 return GvAV(gv);
7d49f689 2538 return NULL;
6224f72b
GS
2539}
2540
954c1994 2541/*
ccfc67b7
JH
2542=head1 Hash Manipulation Functions
2543
954c1994
GS
2544=for apidoc p||get_hv
2545
6673a63c
NC
2546Returns the HV of the specified Perl hash. C<flags> are passed to
2547C<gv_fetchpv>. If C<GV_ADD> is set and the
2548Perl variable does not exist then it will be created. If C<flags> is zero
2549and the variable does not exist then NULL is returned.
954c1994
GS
2550
2551=cut
2552*/
2553
6224f72b 2554HV*
6673a63c 2555Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2556{
6673a63c 2557 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2558
2559 PERL_ARGS_ASSERT_GET_HV;
2560
6673a63c 2561 if (flags)
a0d0e21e
LW
2562 return GvHVn(gv);
2563 if (gv)
2564 return GvHV(gv);
5c284bb0 2565 return NULL;
a0d0e21e
LW
2566}
2567
954c1994 2568/*
ccfc67b7
JH
2569=head1 CV Manipulation Functions
2570
780a5241
NC
2571=for apidoc p||get_cvn_flags
2572
2573Returns the CV of the specified Perl subroutine. C<flags> are passed to
2574C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2575exist then it will be declared (which has the same effect as saying
2576C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2577then NULL is returned.
2578
954c1994
GS
2579=for apidoc p||get_cv
2580
780a5241 2581Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2582
2583=cut
2584*/
2585
a0d0e21e 2586CV*
780a5241 2587Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2588{
780a5241 2589 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2590
2591 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2592
334dda80
FC
2593 /* XXX this is probably not what they think they're getting.
2594 * It has the same effect as "sub name;", i.e. just a forward
2595 * declaration! */
780a5241 2596 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2597 return newSTUB(gv,0);
780a5241 2598 }
a0d0e21e 2599 if (gv)
8ebc5c01 2600 return GvCVu(gv);
601f1833 2601 return NULL;
a0d0e21e
LW
2602}
2603
2c67934f
NC
2604/* Nothing in core calls this now, but we can't replace it with a macro and
2605 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2606CV*
2607Perl_get_cv(pTHX_ const char *name, I32 flags)
2608{
7918f24d
NC
2609 PERL_ARGS_ASSERT_GET_CV;
2610
780a5241
NC
2611 return get_cvn_flags(name, strlen(name), flags);
2612}
2613
79072805
LW
2614/* Be sure to refetch the stack pointer after calling these routines. */
2615
954c1994 2616/*
ccfc67b7
JH
2617
2618=head1 Callback Functions
2619
954c1994
GS
2620=for apidoc p||call_argv
2621
f0b90de1
SF
2622Performs a callback to the specified named and package-scoped Perl subroutine
2623with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2624
2625Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2626
2627=cut
2628*/
2629
a0d0e21e 2630I32
5aaab254 2631Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2632
8ac85365
NIS
2633 /* See G_* flags in cop.h */
2634 /* null terminated arg list */
8990e307 2635{
97aff369 2636 dVAR;
a0d0e21e 2637 dSP;
8990e307 2638
7918f24d
NC
2639 PERL_ARGS_ASSERT_CALL_ARGV;
2640
924508f0 2641 PUSHMARK(SP);
a0d0e21e 2642 if (argv) {
8990e307 2643 while (*argv) {
6e449a3a 2644 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2645 argv++;
2646 }
a0d0e21e 2647 PUTBACK;
8990e307 2648 }
864dbfa3 2649 return call_pv(sub_name, flags);
8990e307
LW
2650}
2651
954c1994
GS
2652/*
2653=for apidoc p||call_pv
2654
2655Performs a callback to the specified Perl sub. See L<perlcall>.
2656
2657=cut
2658*/
2659
a0d0e21e 2660I32
864dbfa3 2661Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2662 /* name of the subroutine */
2663 /* See G_* flags in cop.h */
a0d0e21e 2664{
7918f24d
NC
2665 PERL_ARGS_ASSERT_CALL_PV;
2666
0da0e728 2667 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2668}
2669
954c1994
GS
2670/*
2671=for apidoc p||call_method
2672
2673Performs a callback to the specified Perl method. The blessed object must
2674be on the stack. See L<perlcall>.
2675
2676=cut
2677*/
2678
a0d0e21e 2679I32
864dbfa3 2680Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2681 /* name of the subroutine */
2682 /* See G_* flags in cop.h */
a0d0e21e 2683{
46ca9bac 2684 STRLEN len;
c106c2be 2685 SV* sv;
7918f24d
NC
2686 PERL_ARGS_ASSERT_CALL_METHOD;
2687
46ca9bac 2688 len = strlen(methname);
c106c2be
RZ
2689 sv = flags & G_METHOD_NAMED
2690 ? sv_2mortal(newSVpvn_share(methname, len,0))
2691 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2692
c106c2be 2693 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2694}
2695
2696/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2697/*
2698=for apidoc p||call_sv
2699
2700Performs a callback to the Perl sub whose name is in the SV. See
2701L<perlcall>.
2702
2703=cut
2704*/
2705
a0d0e21e 2706I32
001d637e 2707Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2708 /* See G_* flags in cop.h */
a0d0e21e 2709{
27da23d5 2710 dVAR; dSP;
a0d0e21e 2711 LOGOP myop; /* fake syntax tree node */
c106c2be
RZ
2712 OP* method;
2713 UNOP method_unop;
2714 SVOP method_svop;
aa689395 2715 I32 oldmark;
8ea43dc8 2716 VOL I32 retval = 0;
a0d0e21e 2717 I32 oldscope;
54310121 2718 bool oldcatch = CATCH_GET;
6224f72b 2719 int ret;
c4420975 2720 OP* const oldop = PL_op;
db36c5a1 2721 dJMPENV;
1e422769 2722
7918f24d
NC
2723 PERL_ARGS_ASSERT_CALL_SV;
2724
a0d0e21e
LW
2725 if (flags & G_DISCARD) {
2726 ENTER;
2727 SAVETMPS;
2728 }
2f8edad0
NC
2729 if (!(flags & G_WANT)) {
2730 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2731 */
2732 flags |= G_SCALAR;
2733 }
a0d0e21e 2734
aa689395 2735 Zero(&myop, 1, LOGOP);
f51d4af5 2736 if (!(flags & G_NOARGS))
aa689395 2737 myop.op_flags |= OPf_STACKED;
4f911530 2738 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2739 SAVEOP();
533c011a 2740 PL_op = (OP*)&myop;
aa689395 2741
3280af22 2742 EXTEND(PL_stack_sp, 1);
c106c2be
RZ
2743 if (!(flags & G_METHOD_NAMED))
2744 *++PL_stack_sp = sv;
aa689395 2745 oldmark = TOPMARK;
3280af22 2746 oldscope = PL_scopestack_ix;
a0d0e21e 2747
3280af22 2748 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2749 /* Handle first BEGIN of -d. */
3280af22 2750 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2751 /* Try harder, since this may have been a sighandler, thus
2752 * curstash may be meaningless. */
ea726b52 2753 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2754 && !(flags & G_NODEBUG))
5ff48db8 2755 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2756
c106c2be
RZ
2757 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2758 if ( flags & G_METHOD_NAMED ) {
2759 Zero(&method_svop, 1, SVOP);
2760 method_svop.op_next = (OP*)&myop;
2761 method_svop.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2762 method_svop.op_type = OP_METHOD_NAMED;
2763 method_svop.op_sv = sv;
2764 PL_op = (OP*)&method_svop;
2765 } else {
2766 Zero(&method_unop, 1, UNOP);
2767 method_unop.op_next = (OP*)&myop;
2768 method_unop.op_ppaddr = PL_ppaddr[OP_METHOD];
2769 method_unop.op_type = OP_METHOD;
2770 PL_op = (OP*)&method_unop;
2771 }
2772 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2773 myop.op_type = OP_ENTERSUB;
2774
968b3946
GS
2775 }
2776
312caa8e 2777 if (!(flags & G_EVAL)) {
0cdb2077 2778 CATCH_SET(TRUE);
d6f07c05 2779 CALL_BODY_SUB((OP*)&myop);
312caa8e 2780 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2781 CATCH_SET(oldcatch);
312caa8e
CS
2782 }
2783 else {
d78bda3d 2784 myop.op_other = (OP*)&myop;
3280af22 2785 PL_markstack_ptr--;
edb2152a 2786 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2787 PL_markstack_ptr++;
a0d0e21e 2788
14dd3ad8 2789 JMPENV_PUSH(ret);
edb2152a 2790
6224f72b
GS
2791 switch (ret) {
2792 case 0:
14dd3ad8 2793 redo_body:
d6f07c05 2794 CALL_BODY_SUB((OP*)&myop);
312caa8e 2795 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2796 if (!(flags & G_KEEPERR)) {
ab69dbc2 2797 CLEAR_ERRSV();
8433848b 2798 }
a0d0e21e 2799 break;
6224f72b 2800 case 1:
f86702cc 2801 STATUS_ALL_FAILURE;
a0d0e21e 2802 /* FALL THROUGH */
6224f72b 2803 case 2:
a0d0e21e 2804 /* my_exit() was called */
03d9f026 2805 SET_CURSTASH(PL_defstash);
a0d0e21e 2806 FREETMPS;
14dd3ad8 2807 JMPENV_POP;
f86702cc 2808 my_exit_jump();
118e2215 2809 assert(0); /* NOTREACHED */
6224f72b 2810 case 3:
3280af22 2811 if (PL_restartop) {
febb3a6d 2812 PL_restartjmpenv = NULL;
533c011a 2813 PL_op = PL_restartop;
3280af22 2814 PL_restartop = 0;
312caa8e 2815 goto redo_body;
a0d0e21e 2816 }
3280af22 2817 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2818 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2819 retval = 0;
2820 else {
2821 retval = 1;
3280af22 2822 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2823 }
312caa8e 2824 break;
a0d0e21e 2825 }
a0d0e21e 2826
edb2152a
NC
2827 if (PL_scopestack_ix > oldscope)
2828 delete_eval_scope();
14dd3ad8 2829 JMPENV_POP;
a0d0e21e 2830 }
1e422769 2831
a0d0e21e 2832 if (flags & G_DISCARD) {
3280af22 2833 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2834 retval = 0;
2835 FREETMPS;
2836 LEAVE;
2837 }
533c011a 2838 PL_op = oldop;
a0d0e21e
LW
2839 return retval;
2840}
2841
6e72f9df 2842/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2843
954c1994
GS
2844/*
2845=for apidoc p||eval_sv
2846
be064c4a
DM
2847Tells Perl to C<eval> the string in the SV. It supports the same flags
2848as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2849
2850=cut
2851*/
2852
a0d0e21e 2853I32
864dbfa3 2854Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2855
8ac85365 2856 /* See G_* flags in cop.h */
a0d0e21e 2857{
97aff369 2858 dVAR;
924508f0 2859 dSP;
a0d0e21e 2860 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2861 VOL I32 oldmark = SP - PL_stack_base;
2862 VOL I32 retval = 0;
6224f72b 2863 int ret;
c4420975 2864 OP* const oldop = PL_op;
db36c5a1 2865 dJMPENV;
84902520 2866
7918f24d
NC
2867 PERL_ARGS_ASSERT_EVAL_SV;
2868
4633a7c4
LW
2869 if (flags & G_DISCARD) {
2870 ENTER;
2871 SAVETMPS;
2872 }
2873
462e5cf6 2874 SAVEOP();
533c011a 2875 PL_op = (OP*)&myop;
5ff48db8 2876 Zero(&myop, 1, UNOP);
3280af22
NIS
2877 EXTEND(PL_stack_sp, 1);
2878 *++PL_stack_sp = sv;
79072805 2879
4633a7c4
LW
2880 if (!(flags & G_NOARGS))
2881 myop.op_flags = OPf_STACKED;
6e72f9df 2882 myop.op_type = OP_ENTEREVAL;
4f911530 2883 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2884 if (flags & G_KEEPERR)
2885 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2886
2887 if (flags & G_RE_REPARSING)
2888 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2889
dedbcade
DM
2890 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2891 * before a PUSHEVAL, which corrupts the stack after a croak */
2892 TAINT_PROPER("eval_sv()");
2893
14dd3ad8 2894 JMPENV_PUSH(ret);
6224f72b
GS
2895 switch (ret) {
2896 case 0:
14dd3ad8 2897 redo_body:
2ba65d5f
DM
2898 if (PL_op == (OP*)(&myop)) {
2899 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2900 if (!PL_op)
2901 goto fail; /* failed in compilation */
2902 }
4aca2f62 2903 CALLRUNOPS(aTHX);
312caa8e 2904 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2905 if (!(flags & G_KEEPERR)) {
ab69dbc2 2906 CLEAR_ERRSV();
8433848b 2907 }
4633a7c4 2908 break;
6224f72b 2909 case 1:
f86702cc 2910 STATUS_ALL_FAILURE;
4633a7c4 2911 /* FALL THROUGH */
6224f72b 2912 case 2:
4633a7c4 2913 /* my_exit() was called */
03d9f026 2914 SET_CURSTASH(PL_defstash);
4633a7c4 2915 FREETMPS;
14dd3ad8 2916 JMPENV_POP;
f86702cc 2917 my_exit_jump();
118e2215 2918 assert(0); /* NOTREACHED */
6224f72b 2919 case 3:
3280af22 2920 if (PL_restartop) {
febb3a6d 2921 PL_restartjmpenv = NULL;
533c011a 2922 PL_op = PL_restartop;
3280af22 2923 PL_restartop = 0;
312caa8e 2924 goto redo_body;
4633a7c4 2925 }
4aca2f62 2926 fail:
3280af22 2927 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2928 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2929 retval = 0;
2930 else {
2931 retval = 1;
3280af22 2932 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2933 }
312caa8e 2934 break;
4633a7c4
LW
2935 }
2936
14dd3ad8 2937 JMPENV_POP;
4633a7c4 2938 if (flags & G_DISCARD) {
3280af22 2939 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2940 retval = 0;
2941 FREETMPS;
2942 LEAVE;
2943 }
533c011a 2944 PL_op = oldop;
4633a7c4
LW
2945 return retval;
2946}
2947
954c1994
GS
2948/*
2949=for apidoc p||eval_pv
2950
2951Tells Perl to C<eval> the given string and return an SV* result.
2952
2953=cut
2954*/
2955
137443ea 2956SV*
864dbfa3 2957Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2958{
97aff369 2959 dVAR;
137443ea
PP
2960 SV* sv = newSVpv(p, 0);
2961
7918f24d
NC
2962 PERL_ARGS_ASSERT_EVAL_PV;
2963
864dbfa3 2964 eval_sv(sv, G_SCALAR);
137443ea
PP
2965 SvREFCNT_dec(sv);
2966
ed1786ad
DD
2967 {
2968 dSP;
2969 sv = POPs;
2970 PUTBACK;
2971 }
137443ea 2972
eed484f9
DD
2973 /* just check empty string or undef? */
2974 if (croak_on_error) {
2975 SV * const errsv = ERRSV;
2976 if(SvTRUE_NN(errsv))
2977 /* replace with croak_sv? */
2978 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2979 }
137443ea
PP
2980
2981 return sv;
2982}
2983
4633a7c4
LW
2984/* Require a module. */
2985
954c1994 2986/*
ccfc67b7
JH
2987=head1 Embedding Functions
2988
954c1994
GS
2989=for apidoc p||require_pv
2990
7d3fb230
BS
2991Tells Perl to C<require> the file named by the string argument. It is
2992analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2993implemented that way; consider using load_module instead.
954c1994 2994
7d3fb230 2995=cut */
954c1994 2996
4633a7c4 2997void
864dbfa3 2998Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2999{
97aff369 3000 dVAR;
d3acc0f7 3001 dSP;
97aff369 3002 SV* sv;
7918f24d
NC
3003
3004 PERL_ARGS_ASSERT_REQUIRE_PV;
3005
e788e7d3 3006 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 3007 PUTBACK;
be41e5d9
NC
3008 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3009 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
3010 SPAGAIN;
3011 POPSTACK;
79072805
LW
3012}
3013
76e3520e 3014STATIC void
b6f82619 3015S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 3016{
ab821d7f 3017 /* This message really ought to be max 23 lines.
75c72d73 3018 * Removed -h because the user already knows that option. Others? */
fb73857a 3019
1566c39d
NC
3020 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3021 minimum of 509 character string literals. */
27da23d5 3022 static const char * const usage_msg[] = {
1566c39d
NC
3023" -0[octal] specify record separator (\\0, if no argument)\n"
3024" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3025" -C[number/list] enables the listed Unicode features\n"
3026" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3027" -d[:debugger] run program under debugger\n"
3028" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3029" -e program one line of program (several -e's allowed, omit programfile)\n"
3030" -E program like -e, but enables all optional features\n"
3031" -f don't do $sitelib/sitecustomize.pl at startup\n"
3032" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3033" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3034" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3035" -l[octal] enable line ending processing, specifies line terminator\n"
3036" -[mM][-]module execute \"use/no module...\" before executing program\n"
3037" -n assume \"while (<>) { ... }\" loop around program\n"
3038" -p assume loop like -n but print line also, like sed\n"
3039" -s enable rudimentary parsing for switches after programfile\n"
3040" -S look for programfile using PATH environment variable\n",
3041" -t enable tainting warnings\n"
3042" -T enable tainting checks\n"
3043" -u dump core after parsing program\n"
3044" -U allow unsafe operations\n"
3045" -v print version, patchlevel and license\n"
3046" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3047" -w enable many useful warnings\n"
1566c39d
NC
3048" -W enable all warnings\n"
3049" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3050" -X disable all warnings\n"
3051" \n"
3052"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3053NULL
3054};
27da23d5 3055 const char * const *p = usage_msg;
1566c39d 3056 PerlIO *out = PerlIO_stdout();
fb73857a 3057
1566c39d
NC
3058 PerlIO_printf(out,
3059 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3060 PL_origargv[0]);
fb73857a 3061 while (*p)
1566c39d 3062 PerlIO_puts(out, *p++);
b6f82619 3063 my_exit(0);
4633a7c4
LW
3064}
3065
b4ab917c
DM
3066/* convert a string of -D options (or digits) into an int.
3067 * sets *s to point to the char after the options */
3068
3069#ifdef DEBUGGING
3070int
e1ec3a88 3071Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3072{
27da23d5 3073 static const char * const usage_msgd[] = {
651b8f1a
NC
3074 " Debugging flag values: (see also -d)\n"
3075 " p Tokenizing and parsing (with v, displays parse stack)\n"
3076 " s Stack snapshots (with v, displays all stacks)\n"
3077 " l Context (loop) stack processing\n"
3078 " t Trace execution\n"
3079 " o Method and overloading resolution\n",
3080 " c String/numeric conversions\n"
3081 " P Print profiling info, source file input state\n"
3082 " m Memory and SV allocation\n"
3083 " f Format processing\n"
3084 " r Regular expression parsing and execution\n"
3085 " x Syntax tree dump\n",
3086 " u Tainting checks\n"
3087 " H Hash dump -- usurps values()\n"
3088 " X Scratchpad allocation\n"
3089 " D Cleaning up\n"
56967202 3090 " S Op slab allocation\n"
651b8f1a
NC
3091 " T Tokenising\n"
3092 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3093 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3094 " v Verbose: use in conjunction with other flags\n"
3095 " C Copy On Write\n"
3096 " A Consistency checks on internal structures\n"
3097 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3098 " M trace smart match resolution\n"
3099 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3100 NULL
3101 };
b4ab917c 3102 int i = 0;
7918f24d
NC
3103
3104 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3105
b4ab917c
DM
3106 if (isALPHA(**s)) {
3107 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3108 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c 3109
0eb30aeb 3110 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3111 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3112 if (d)
3113 i |= 1 << (d - debopts);
3114 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3115 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3116 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3117 }
3118 }
e6e64d9b 3119 else if (isDIGIT(**s)) {
b4ab917c 3120 i = atoi(*s);
0eb30aeb 3121 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3122 }
ddcf8bc1 3123 else if (givehelp) {
06e869a4 3124 const char *const *p = usage_msgd;
651b8f1a 3125 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3126 }
b4ab917c
DM
3127# ifdef EBCDIC
3128 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3129 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3130 "-Dp not implemented on this platform\n");
3131# endif
3132 return i;
3133}
3134#endif
3135
79072805
LW
3136/* This routine handles any switches that can be given during run */
3137
c7030b81
NC
3138const char *
3139Perl_moreswitches(pTHX_ const char *s)
79072805 3140{
27da23d5 3141 dVAR;
84c133a0 3142 UV rschar;
0544e6df 3143 const char option = *s; /* used to remember option in -m/-M code */
79072805 3144
7918f24d
NC
3145 PERL_ARGS_ASSERT_MORESWITCHES;
3146
79072805
LW
3147 switch (*s) {
3148 case '0':
a863c7d1 3149 {
f2095865 3150 I32 flags = 0;
a3b680e6 3151 STRLEN numlen;
f2095865
JH
3152
3153 SvREFCNT_dec(PL_rs);
3154 if (s[1] == 'x' && s[2]) {
a3b680e6 3155 const char *e = s+=2;
f2095865
JH
3156 U8 *tmps;
3157
a3b680e6
AL
3158 while (*e)
3159 e++;
f2095865
JH
3160 numlen = e - s;
3161 flags = PERL_SCAN_SILENT_ILLDIGIT;
3162 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3163 if (s + numlen < e) {
3164 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3165 numlen = 0;
3166 s--;
3167 }
396482e1 3168 PL_rs = newSVpvs("");
c5661c80 3169 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3170 tmps = (U8*)SvPVX(PL_rs);
3171 uvchr_to_utf8(tmps, rschar);
3172 SvCUR_set(PL_rs, UNISKIP(rschar));
3173 SvUTF8_on(PL_rs);
3174 }
3175 else {
3176 numlen = 4;
3177 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3178 if (rschar & ~((U8)~0))
3179 PL_rs = &PL_sv_undef;
3180 else if (!rschar && numlen >= 2)
396482e1 3181 PL_rs = newSVpvs("");
f2095865
JH
3182 else {
3183 char ch = (char)rschar;
3184 PL_rs = newSVpvn(&ch, 1);
3185 }
3186 }
64ace3f8 3187 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3188 return s + numlen;
a863c7d1 3189 }
46487f74 3190 case 'C':
a05d7ebb 3191 s++;
dd374669 3192 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3193 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3194 PL_utf8cache = -1;
46487f74 3195 return s;
2304df62 3196 case 'F':
3280af22 3197 PL_minus_F = TRUE;
ebce5377
RGS
3198 PL_splitstr = ++s;
3199 while (*s && !isSPACE(*s)) ++s;
e49e380e 3200 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3201 return s;
79072805 3202 case 'a':
3280af22 3203 PL_minus_a = TRUE;
79072805
LW
3204 s++;
3205 return s;
3206 case 'c':
3280af22 3207 PL_minus_c = TRUE;
79072805
LW
3208 s++;
3209 return s;
3210 case 'd':
f20b2998 3211 forbid_setid('d', FALSE);
4633a7c4 3212 s++;
2cbb2ee1
RGS
3213
3214 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3215 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3216 ++s;
3217 my_setenv("PERL5DB_THREADED", "1");
3218 }
3219
70c94a19
RR
3220 /* The following permits -d:Mod to accepts arguments following an =
3221 in the fashion that -MSome::Mod does. */
3222 if (*s == ':' || *s == '=') {
b19934fb
NC
3223 const char *start;
3224 const char *end;
3225 SV *sv;
3226
3227 if (*++s == '-') {
3228 ++s;
3229 sv = newSVpvs("no Devel::");
3230 } else {
3231 sv = newSVpvs("use Devel::");
3232 }
3233
3234 start = s;
3235 end = s + strlen(s);
f85893a1 3236
b19934fb 3237 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3238 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3239 if (*s != '=')
f85893a1 3240 sv_catpvn(sv, start, end - start);
70c94a19
RR
3241 else {
3242 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3243 /* Don't use NUL as q// delimiter here, this string goes in the
3244 * environment. */
3245 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3246 }
f85893a1 3247 s = end;
184f32ec 3248 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3249 SvREFCNT_dec(sv);
4633a7c4 3250 }
ed094faf 3251 if (!PL_perldb) {
3280af22 3252 PL_perldb = PERLDB_ALL;
a0d0e21e 3253 init_debugger();
ed094faf 3254 }
79072805
LW
3255 return s;
3256 case 'D':
0453d815 3257 {
79072805 3258#ifdef DEBUGGING
f20b2998 3259 forbid_setid('D', FALSE);
b4ab917c 3260 s++;
dd374669 3261 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3262#else /* !DEBUGGING */
0453d815 3263 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3264 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3265 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3266 for (s++; isWORDCHAR(*s); s++) ;
79072805 3267#endif
79072805 3268 return s;
0453d815 3269 }
4633a7c4 3270 case 'h':
b6f82619 3271 usage();
79072805 3272 case 'i':
43c5f42d 3273 Safefree(PL_inplace);
c030f24b
GH
3274#if defined(__CYGWIN__) /* do backup extension automagically */
3275 if (*(s+1) == '\0') {
c86a4f2e 3276 PL_inplace = savepvs(".bak");
c030f24b
GH
3277 return s+1;
3278 }
3279#endif /* __CYGWIN__ */
5ef5d758 3280 {
d4c19fe8 3281 const char * const start = ++s;
5ef5d758
NC
3282 while (*s && !isSPACE(*s))
3283 ++s;
3284
3285 PL_inplace = savepvn(start, s - start);
3286 }
7b8d334a 3287 if (*s) {
5ef5d758 3288 ++s;
7b8d334a 3289 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3290 s++;
7b8d334a 3291 }
fb73857a 3292 return s;
4e49a025 3293 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3294 forbid_setid('I', FALSE);
fb73857a
PP
3295 ++s;
3296 while (*s && isSPACE(*s))
3297 ++s;
3298 if (*s) {
c7030b81 3299 const char *e, *p;
0df16ed7
GS
3300 p = s;
3301 /* ignore trailing spaces (possibly followed by other switches) */
3302 do {
3303 for (e = p; *e && !isSPACE(*e); e++) ;
3304 p = e;
3305 while (isSPACE(*p))
3306 p++;
3307 } while (*p && *p != '-');
55b4bc1c 3308 incpush(s, e-s,
e28f3139 3309 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3310 s = p;
3311 if (*s == '-')
3312 s++;
79072805
LW
3313 }
3314 else
a67e862a 3315 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3316 return s;
79072805 3317 case 'l':
3280af22 3318 PL_minus_l = TRUE;
79072805 3319 s++;
7889fe52
NIS
3320 if (PL_ors_sv) {
3321 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3322 PL_ors_sv = NULL;
7889fe52 3323 }
79072805 3324 if (isDIGIT(*s)) {
53305cf1 3325 I32 flags = 0;
a3b680e6 3326 STRLEN numlen;
396482e1 3327 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3328 numlen = 3 + (*s == '0');
3329 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3330 s += numlen;
3331 }
3332 else {
8bfdd7d9 3333 if (RsPARA(PL_rs)) {
396482e1 3334 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3335 }
3336 else {
8bfdd7d9 3337 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3338 }
79072805
LW
3339 }
3340 return s;
1a30305b 3341 case 'M':
f20b2998 3342 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3343 /* FALL THROUGH */
3344 case 'm':
f20b2998 3345 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3346 if (*++s) {
c7030b81 3347 const char *start;
b64cb68c 3348 const char *end;
11343788 3349 SV *sv;
e1ec3a88 3350 const char *use = "use ";
0544e6df 3351 bool colon = FALSE;
a5f75d66 3352 /* -M-foo == 'no foo' */
d0043bd1
NC
3353 /* Leading space on " no " is deliberate, to make both
3354 possibilities the same length. */
3355 if (*s == '-') { use = " no "; ++s; }
3356 sv = newSVpvn(use,4);
a5f75d66 3357 start = s;
1a30305b 3358 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3359 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3360 if( *s++ == ':' ) {
3361 if( *s == ':' )
3362 s++;
3363 else
3364 colon = TRUE;
3365 }
3366 }
3367 if (s == start)
3368 Perl_croak(aTHX_ "Module name required with -%c option",
3369 option);
3370 if (colon)
3371 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3372 "contains single ':'",
63da6837 3373 (int)(s - start), start, option);
b64cb68c 3374 end = s + strlen(s);
c07a80fd 3375 if (*s != '=') {
b64cb68c 3376 sv_catpvn(sv, start, end - start);
0544e6df 3377 if (option == 'm') {
c07a80fd 3378 if (*s != '\0')
cea2e8a9 3379 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3380 sv_catpvs( sv, " ()");
c07a80fd
PP
3381 }
3382 } else {
11343788 3383 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3384 /* Use NUL as q''-delimiter. */
3385 sv_catpvs(sv, " split(/,/,q\0");
3386 ++s;
3387 sv_catpvn(sv, s, end - s);
396482e1 3388 sv_catpvs(sv, "\0)");
c07a80fd 3389 }
b64cb68c 3390 s = end;
29a861e7 3391 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3392 }
3393 else
0544e6df 3394 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3395 return s;
79072805 3396 case 'n':
3280af22 3397 PL_minus_n = TRUE;
79072805
LW
3398 s++;
3399 return s;
3400 case 'p':
3280af22 3401 PL_minus_p = TRUE;
79072805
LW
3402 s++;
3403 return s;
3404 case 's':
f20b2998 3405 forbid_setid('s', FALSE);
3280af22 3406 PL_doswitches = TRUE;
79072805
LW
3407 s++;
3408 return s;
6537fe72 3409 case 't':
27a6968b 3410 case 'T':
284167a5
SM
3411#if SILENT_NO_TAINT_SUPPORT
3412 /* silently ignore */
3413#elif NO_TAINT_SUPPORT
3231f579 3414 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3415 "Cowardly refusing to run with -t or -T flags");
3416#else
3417 if (!TAINTING_get)
27a6968b 3418 TOO_LATE_FOR(*s);
284167a5 3419#endif
6537fe72 3420 s++;
463ee0b2 3421 return s;
79072805 3422 case 'u':
3280af22 3423 PL_do_undump = TRUE;
79072805
LW
3424 s++;
3425 return s;
3426 case 'U':
3280af22 3427 PL_unsafe = TRUE;
79072805
LW
3428 s++;
3429 return s;
3430 case 'v':
c4bc78d9
NC
3431 minus_v();
3432 case 'w':
3433 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3434 PL_dowarn |= G_WARN_ON;
3435 }
3436 s++;
3437 return s;
3438 case 'W':
3439 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3440 if (!specialWARN(PL_compiling.cop_warnings))
3441 PerlMemShared_free(PL_compiling.cop_warnings);
3442 PL_compiling.cop_warnings = pWARN_ALL ;
3443 s++;
3444 return s;
3445 case 'X':
3446 PL_dowarn = G_WARN_ALL_OFF;
3447 if (!specialWARN(PL_compiling.cop_warnings))
3448 PerlMemShared_free(PL_compiling.cop_warnings);
3449 PL_compiling.cop_warnings = pWARN_NONE ;
3450 s++;
3451 return s;
3452 case '*':
3453 case ' ':
3454 while( *s == ' ' )
3455 ++s;
3456 if (s[0] == '-') /* Additional switches on #! line. */
3457 return s+1;
3458 break;
3459 case '-':
3460 case 0:
3461#if defined(WIN32) || !defined(PERL_STRICT_CR)
3462 case '\r':
3463#endif
3464 case '\n':
3465 case '\t':
3466 break;
3467#ifdef ALTERNATE_SHEBANG
3468 case 'S': /* OS/2 needs -S on "extproc" line. */
3469 break;
3470#endif
4bb78d63
CB
3471 case 'e': case 'f': case 'x': case 'E':
3472#ifndef ALTERNATE_SHEBANG
3473 case 'S':
3474#endif
3475 case 'V':
c4bc78d9 3476 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3477 default:
3478 Perl_croak(aTHX_
3479 "Unrecognized switch: -%.1s (-h will show valid options)",s
3480 );
c4bc78d9
NC
3481 }
3482 return NULL;
3483}
3484
3485
3486STATIC void
3487S_minus_v(pTHX)
3488{
fc3381af 3489 PerlIO * PIO_stdout;
d7aa5382 3490 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3491 upg_version(PL_patchlevel, TRUE);
46807d8e
YO
3492 {
3493 SV* level= vstringify(PL_patchlevel);
3494#ifdef PERL_PATCHNUM
23d483e2
NC
3495# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3496 SV *num = newSVpvs(PERL_PATCHNUM "*");
3497# else
3498 SV *num = newSVpvs(PERL_PATCHNUM);
3499# endif
fc3381af
DD
3500 {
3501 STRLEN level_len, num_len;
3502 char * level_str, * num_str;
3503 num_str = SvPV(num, num_len);
3504 level_str = SvPV(level, level_len);
3505 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3506 SvREFCNT_dec(level);
3507 level= num;
3508 } else {
3509 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3510 SvREFCNT_dec(num);
3511 }
46807d8e
YO
3512 }
3513 #endif
fc3381af
DD
3514 PIO_stdout = PerlIO_stdout();
3515 PerlIO_printf(PIO_stdout,
ded326e4
DG
3516 "\nThis is perl " STRINGIFY(PERL_REVISION)
3517 ", version " STRINGIFY(PERL_VERSION)
3518 ", subversion " STRINGIFY(PERL_SUBVERSION)
3519 " (%"SVf") built for " ARCHNAME, level
3520 );
46807d8e
YO
3521 SvREFCNT_dec(level);
3522 }
fb73857a
PP
3523#if defined(LOCAL_PATCH_COUNT)
3524 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3525 PerlIO_printf(PIO_stdout,
b0e47665
GS
3526 "\n(with %d registered patch%s, "
3527 "see perl -V for more detail)",
bb7a0f54 3528 LOCAL_PATCH_COUNT,
b0e47665 3529 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3530#endif
1a30305b 3531
fc3381af 3532 PerlIO_printf(PIO_stdout,
d907e2e9 3533 "\n\nCopyright 1987-2013, Larry Wall\n");
79072805 3534#ifdef MSDOS
fc3381af 3535 PerlIO_printf(PIO_stdout,
b0e47665