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4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
39#endif
40
2982a345
NC
41#ifdef USE_KERN_PROC_PATHNAME
42# include <sys/sysctl.h>
43#endif
44
ae60cb46
NC
45#ifdef USE_NSGETEXECUTABLEPATH
46# include <mach-o/dyld.h>
47#endif
48
2aa47728 49#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
50# ifdef I_SYSUIO
51# include <sys/uio.h>
52# endif
53
54union control_un {
55 struct cmsghdr cm;
56 char control[CMSG_SPACE(sizeof(int))];
57};
58
2aa47728
NC
59#endif
60
5311654c
JH
61#ifndef HZ
62# ifdef CLK_TCK
63# define HZ CLK_TCK
64# else
65# define HZ 60
66# endif
67#endif
68
7114a2d2 69#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 70char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
71#endif
72
acfe0abc 73static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 74
cc69b689 75#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 76# define validate_suid(rsfp) NOOP
cc69b689 77#else
b24bc095 78# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 79#endif
8d063cd8 80
d6f07c05
AL
81#define CALL_BODY_SUB(myop) \
82 if (PL_op == (myop)) \
139d0ce6 83 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
84 if (PL_op) \
85 CALLRUNOPS(aTHX);
86
87#define CALL_LIST_BODY(cv) \
88 PUSHMARK(PL_stack_sp); \
9a8aa25b 89 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 90
e6827a76 91static void
daa7d858 92S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 93{
27da23d5 94 dVAR;
e6827a76
NC
95 if (!PL_curinterp) {
96 PERL_SET_INTERP(my_perl);
3db8f154 97#if defined(USE_ITHREADS)
e6827a76
NC
98 INIT_THREADS;
99 ALLOC_THREAD_KEY;
100 PERL_SET_THX(my_perl);
101 OP_REFCNT_INIT;
e8570548 102 OP_CHECK_MUTEX_INIT;
71ad1b0c 103 HINTS_REFCNT_INIT;
e6827a76 104 MUTEX_INIT(&PL_dollarzero_mutex);
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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
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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 *
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158perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
159 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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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;
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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
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GS
183 return my_perl;
184}
185#else
954c1994
GS
186
187/*
ccfc67b7
JH
188=head1 Embedding Functions
189
954c1994
GS
190=for apidoc perl_alloc
191
192Allocates a new Perl interpreter. See L<perlembed>.
193
194=cut
195*/
196
93a17b20 197PerlInterpreter *
cea2e8a9 198perl_alloc(void)
79072805 199{
cea2e8a9 200 PerlInterpreter *my_perl;
79072805 201
9f653bb5 202 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 203 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 204
e6827a76 205 S_init_tls_and_interp(my_perl);
7cb608b5 206#ifndef PERL_TRACK_MEMPOOL
07409e01 207 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
208#else
209 Zero(my_perl, 1, PerlInterpreter);
210 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
211 return my_perl;
212#endif
79072805 213}
32e30700 214#endif /* PERL_IMPLICIT_SYS */
79072805 215
954c1994
GS
216/*
217=for apidoc perl_construct
218
219Initializes a new Perl interpreter. See L<perlembed>.
220
221=cut
222*/
223
79072805 224void
0cb96387 225perl_construct(pTHXx)
79072805 226{
27da23d5 227 dVAR;
7918f24d
NC
228
229 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
230
8990e307 231#ifdef MULTIPLICITY
54aff467 232 init_interp();
ac27b0f5 233 PL_perl_destruct_level = 1;
54aff467 234#else
7918f24d 235 PERL_UNUSED_ARG(my_perl);
54aff467
GS
236 if (PL_perl_destruct_level > 0)
237 init_interp();
238#endif
34caed6d
DM
239 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
240
0d96b528 241 init_constants();
34caed6d
DM
242
243 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 244 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
245
246 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 247#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 248 PL_pidstatus = newHV();
ca0c25f6 249#endif
79072805 250
396482e1 251 PL_rs = newSVpvs("\n");
dc92893f 252
cea2e8a9 253 init_stacks();
79072805 254
748a9306 255 init_ids();
a5f75d66 256
312caa8e 257 JMPENV_BOOTSTRAP;
f86702cc
PP
258 STATUS_ALL_SUCCESS;
259
0672f40e 260 init_i18nl10n(1);
36477c24 261 SET_NUMERIC_STANDARD();
0b5b802d 262
ab821d7f 263#if defined(LOCAL_PATCH_COUNT)
3280af22 264 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
265#endif
266
52853b95
GS
267#ifdef HAVE_INTERP_INTERN
268 sys_intern_init();
269#endif
270
3a1ee7e8 271 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 272
3280af22
NIS
273 PL_fdpid = newAV(); /* for remembering popen pids by fd */
274 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 275 PL_errors = newSVpvs("");
76f68e9b
MHM
276 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
277 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
278 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 279#ifdef USE_ITHREADS
402d2eb1
NC
280 /* First entry is a list of empty elements. It needs to be initialised
281 else all hell breaks loose in S_find_uninit_var(). */
282 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 283 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 284 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 285#endif
e5dd39fc 286#ifdef USE_REENTRANT_API
59bd0823 287 Perl_reentrant_init(aTHX);
e5dd39fc 288#endif
7dc86639
YO
289#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
290 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
291 * This MUST be done before any hash stores or fetches take place.
292 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
293 * yourself, it is your responsibility to provide a good random seed!
294 * You can also define PERL_HASH_SEED in compile time, see hv.h.
295 *
296 * XXX: fix this comment */
297 if (PL_hash_seed_set == FALSE) {
298 Perl_get_hash_seed(aTHX_ PL_hash_seed);
299 PL_hash_seed_set= TRUE;
300 }
301#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
302
303 /* Note that strtab is a rather special HV. Assumptions are made
304 about not iterating on it, and not adding tie magic to it.
305 It is properly deallocated in perl_destruct() */
306 PL_strtab = newHV();
307
3d47000e
AB
308 HvSHAREKEYS_off(PL_strtab); /* mandatory */
309 hv_ksplit(PL_strtab, 512);
310
0631ea03
AB
311#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
312 _dyld_lookup_and_bind
313 ("__environ", (unsigned long *) &environ_pointer, NULL);
314#endif /* environ */
315
2f42fcb0
JH
316#ifndef PERL_MICRO
317# ifdef USE_ENVIRON_ARRAY
0631ea03 318 PL_origenviron = environ;
2f42fcb0 319# endif
0631ea03
AB
320#endif
321
5311654c 322 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 323 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
324 * The HZ if not originally defined has been by now
325 * been defined as CLK_TCK, if available. */
b6c36746 326#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
327 PL_clocktick = sysconf(_SC_CLK_TCK);
328 if (PL_clocktick <= 0)
329#endif
330 PL_clocktick = HZ;
331
081fc587
AB
332 PL_stashcache = newHV();
333
e8e3635e 334 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 335 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 336
27da23d5
JH
337#ifdef HAS_MMAP
338 if (!PL_mmap_page_size) {
339#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
340 {
341 SETERRNO(0, SS_NORMAL);
342# ifdef _SC_PAGESIZE
343 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
344# else
345 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
346# endif
347 if ((long) PL_mmap_page_size < 0) {
348 if (errno) {
44f8325f 349 SV * const error = ERRSV;
d4c19fe8 350 SvUPGRADE(error, SVt_PV);
0510663f 351 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
352 }
353 else
354 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
355 }
356 }
357#else
358# ifdef HAS_GETPAGESIZE
359 PL_mmap_page_size = getpagesize();
360# else
361# if defined(I_SYS_PARAM) && defined(PAGESIZE)
362 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
363# endif
364# endif
365#endif
366 if (PL_mmap_page_size <= 0)
367 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
368 (IV) PL_mmap_page_size);
369 }
370#endif /* HAS_MMAP */
371
372#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
373 PL_timesbase.tms_utime = 0;
374 PL_timesbase.tms_stime = 0;
375 PL_timesbase.tms_cutime = 0;
376 PL_timesbase.tms_cstime = 0;
377#endif
378
7d113631
NC
379 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
380
a3e6e81e 381 PL_registered_mros = newHV();
9e169432
NC
382 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
383 HvMAX(PL_registered_mros) = 0;
a3e6e81e 384
8990e307 385 ENTER;
79072805
LW
386}
387
954c1994 388/*
62375a60
NIS
389=for apidoc nothreadhook
390
391Stub that provides thread hook for perl_destruct when there are
392no threads.
393
394=cut
395*/
396
397int
4e9e3734 398Perl_nothreadhook(pTHX)
62375a60 399{
96a5add6 400 PERL_UNUSED_CONTEXT;
62375a60
NIS
401 return 0;
402}
403
41e4abd8
NC
404#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
405void
406Perl_dump_sv_child(pTHX_ SV *sv)
407{
408 ssize_t got;
bf357333
NC
409 const int sock = PL_dumper_fd;
410 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
411 union control_un control;
412 struct msghdr msg;
808ad2d0 413 struct iovec vec[2];
bf357333 414 struct cmsghdr *cmptr;
808ad2d0
NC
415 int returned_errno;
416 unsigned char buffer[256];
41e4abd8 417
7918f24d
NC
418 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
419
bf357333 420 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
421 return;
422
423 PerlIO_flush(Perl_debug_log);
424
bf357333
NC
425 /* All these shenanigans are to pass a file descriptor over to our child for
426 it to dump out to. We can't let it hold open the file descriptor when it
427 forks, as the file descriptor it will dump to can turn out to be one end
428 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 429 be open, the wait would be forever.) */
bf357333
NC
430
431 msg.msg_control = control.control;
432 msg.msg_controllen = sizeof(control.control);
433 /* We're a connected socket so we don't need a destination */
434 msg.msg_name = NULL;
435 msg.msg_namelen = 0;
436 msg.msg_iov = vec;
808ad2d0 437 msg.msg_iovlen = 1;
bf357333
NC
438
439 cmptr = CMSG_FIRSTHDR(&msg);
440 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
441 cmptr->cmsg_level = SOL_SOCKET;
442 cmptr->cmsg_type = SCM_RIGHTS;
443 *((int *)CMSG_DATA(cmptr)) = 1;
444
445 vec[0].iov_base = (void*)&sv;
446 vec[0].iov_len = sizeof(sv);
447 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
448
449 if(got < 0) {
bf357333 450 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
451 abort();
452 }
bf357333
NC
453 if(got < sizeof(sv)) {
454 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
455 abort();
456 }
457
808ad2d0
NC
458 /* Return protocol is
459 int: errno value
460 unsigned char: length of location string (0 for empty)
461 unsigned char*: string (not terminated)
462 */
463 vec[0].iov_base = (void*)&returned_errno;
464 vec[0].iov_len = sizeof(returned_errno);
465 vec[1].iov_base = buffer;
466 vec[1].iov_len = 1;
467
468 got = readv(sock, vec, 2);
41e4abd8
NC
469
470 if(got < 0) {
471 perror("Debug leaking scalars parent read failed");
808ad2d0 472 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
473 abort();
474 }
808ad2d0 475 if(got < sizeof(returned_errno) + 1) {
41e4abd8 476 perror("Debug leaking scalars parent short read");
808ad2d0 477 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
478 abort();
479 }
480
808ad2d0
NC
481 if (*buffer) {
482 got = read(sock, buffer + 1, *buffer);
483 if(got < 0) {
484 perror("Debug leaking scalars parent read 2 failed");
485 PerlIO_flush(PerlIO_stderr());
486 abort();
487 }
488
489 if(got < *buffer) {
490 perror("Debug leaking scalars parent short read 2");
491 PerlIO_flush(PerlIO_stderr());
492 abort();
493 }
494 }
495
496 if (returned_errno || *buffer) {
497 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
498 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
499 returned_errno, strerror(returned_errno));
41e4abd8
NC
500 }
501}
502#endif
503
62375a60 504/*
954c1994
GS
505=for apidoc perl_destruct
506
507Shuts down a Perl interpreter. See L<perlembed>.
508
509=cut
510*/
511
31d77e54 512int
0cb96387 513perl_destruct(pTHXx)
79072805 514{
27da23d5 515 dVAR;
be2ea8ed 516 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 517 HV *hv;
2aa47728 518#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
519 pid_t child;
520#endif
9c0b6888 521 int i;
8990e307 522
7918f24d
NC
523 PERL_ARGS_ASSERT_PERL_DESTRUCT;
524#ifndef MULTIPLICITY
ed6c66dd 525 PERL_UNUSED_ARG(my_perl);
7918f24d 526#endif
9d4ba2ae 527
3d22c4f0
GG
528 assert(PL_scopestack_ix == 1);
529
7766f137
GS
530 /* wait for all pseudo-forked children to finish */
531 PERL_WAIT_FOR_CHILDREN;
532
3280af22 533 destruct_level = PL_perl_destruct_level;
36e77d41 534#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 535 {
9d4ba2ae
AL
536 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
537 if (s) {
36e77d41
DD
538 const int i = atoi(s);
539#ifdef DEBUGGING
540 if (destruct_level < i) destruct_level = i;
541#endif
542#ifdef PERL_TRACK_MEMPOOL
543 /* RT #114496, for perl_free */
544 PL_perl_destruct_level = i;
545#endif
5f05dabc 546 }
4633a7c4
LW
547 }
548#endif
549
27da23d5 550 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
551 dJMPENV;
552 int x = 0;
553
554 JMPENV_PUSH(x);
1b6737cc 555 PERL_UNUSED_VAR(x);
9ebf26ad 556 if (PL_endav && !PL_minus_c) {
ca7b837b 557 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 558 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 559 }
f3faeb53 560 JMPENV_POP;
26f423df 561 }
f3faeb53 562 LEAVE;
a0d0e21e 563 FREETMPS;
3d22c4f0 564 assert(PL_scopestack_ix == 0);
a0d0e21e 565
e00b64d4 566 /* Need to flush since END blocks can produce output */
f13a2bc0 567 my_fflush_all();
e00b64d4 568
16c91539 569 if (PL_threadhook(aTHX)) {
62375a60 570 /* Threads hook has vetoed further cleanup */
c301d606 571 PL_veto_cleanup = TRUE;
37038d91 572 return STATUS_EXIT;
62375a60
NIS
573 }
574
2aa47728
NC
575#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
576 if (destruct_level != 0) {
577 /* Fork here to create a child. Our child's job is to preserve the
578 state of scalars prior to destruction, so that we can instruct it
579 to dump any scalars that we later find have leaked.
580 There's no subtlety in this code - it assumes POSIX, and it doesn't
581 fail gracefully */
582 int fd[2];
583
584 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
585 perror("Debug leaking scalars socketpair failed");
586 abort();
587 }
588
589 child = fork();
590 if(child == -1) {
591 perror("Debug leaking scalars fork failed");
592 abort();
593 }
594 if (!child) {
595 /* We are the child */
3125a5a4
NC
596 const int sock = fd[1];
597 const int debug_fd = PerlIO_fileno(Perl_debug_log);
598 int f;
808ad2d0
NC
599 const char *where;
600 /* Our success message is an integer 0, and a char 0 */
b61433a9 601 static const char success[sizeof(int) + 1] = {0};
3125a5a4 602
2aa47728 603 close(fd[0]);
2aa47728 604
3125a5a4
NC
605 /* We need to close all other file descriptors otherwise we end up
606 with interesting hangs, where the parent closes its end of a
607 pipe, and sits waiting for (another) child to terminate. Only
608 that child never terminates, because it never gets EOF, because
bf357333
NC
609 we also have the far end of the pipe open. We even need to
610 close the debugging fd, because sometimes it happens to be one
611 end of a pipe, and a process is waiting on the other end for
612 EOF. Normally it would be closed at some point earlier in
613 destruction, but if we happen to cause the pipe to remain open,
614 EOF never occurs, and we get an infinite hang. Hence all the
615 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
616
617 f = sysconf(_SC_OPEN_MAX);
618 if(f < 0) {
808ad2d0
NC
619 where = "sysconf failed";
620 goto abort;
3125a5a4
NC
621 }
622 while (f--) {
623 if (f == sock)
624 continue;
3125a5a4
NC
625 close(f);
626 }
627
2aa47728
NC
628 while (1) {
629 SV *target;
bf357333
NC
630 union control_un control;
631 struct msghdr msg;
632 struct iovec vec[1];
633 struct cmsghdr *cmptr;
634 ssize_t got;
635 int got_fd;
636
637 msg.msg_control = control.control;
638 msg.msg_controllen = sizeof(control.control);
639 /* We're a connected socket so we don't need a source */
640 msg.msg_name = NULL;
641 msg.msg_namelen = 0;
642 msg.msg_iov = vec;
643 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
644
645 vec[0].iov_base = (void*)&target;
646 vec[0].iov_len = sizeof(target);
647
648 got = recvmsg(sock, &msg, 0);
2aa47728
NC
649
650 if(got == 0)
651 break;
652 if(got < 0) {
808ad2d0
NC
653 where = "recv failed";
654 goto abort;
2aa47728
NC
655 }
656 if(got < sizeof(target)) {
808ad2d0
NC
657 where = "short recv";
658 goto abort;
2aa47728 659 }
bf357333 660
808ad2d0
NC
661 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
662 where = "no cmsg";
663 goto abort;
664 }
665 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
666 where = "wrong cmsg_len";
667 goto abort;
668 }
669 if(cmptr->cmsg_level != SOL_SOCKET) {
670 where = "wrong cmsg_level";
671 goto abort;
672 }
673 if(cmptr->cmsg_type != SCM_RIGHTS) {
674 where = "wrong cmsg_type";
675 goto abort;
676 }
bf357333
NC
677
678 got_fd = *(int*)CMSG_DATA(cmptr);
679 /* For our last little bit of trickery, put the file descriptor
680 back into Perl_debug_log, as if we never actually closed it
681 */
808ad2d0
NC
682 if(got_fd != debug_fd) {
683 if (dup2(got_fd, debug_fd) == -1) {
684 where = "dup2";
685 goto abort;
686 }
687 }
2aa47728 688 sv_dump(target);
bf357333 689
2aa47728
NC
690 PerlIO_flush(Perl_debug_log);
691
808ad2d0 692 got = write(sock, &success, sizeof(success));
2aa47728
NC
693
694 if(got < 0) {
808ad2d0
NC
695 where = "write failed";
696 goto abort;
2aa47728 697 }
808ad2d0
NC
698 if(got < sizeof(success)) {
699 where = "short write";
700 goto abort;
2aa47728
NC
701 }
702 }
703 _exit(0);
808ad2d0
NC
704 abort:
705 {
706 int send_errno = errno;
707 unsigned char length = (unsigned char) strlen(where);
708 struct iovec failure[3] = {
709 {(void*)&send_errno, sizeof(send_errno)},
710 {&length, 1},
711 {(void*)where, length}
712 };
713 int got = writev(sock, failure, 3);
714 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
715 in the parent if we try to read from the socketpair after the
716 child has exited, even if there was data to read.
717 So sleep a bit to give the parent a fighting chance of
718 reading the data. */
719 sleep(2);
720 _exit((got == -1) ? errno : 0);
721 }
bf357333 722 /* End of child. */
2aa47728 723 }
41e4abd8 724 PL_dumper_fd = fd[0];
2aa47728
NC
725 close(fd[1]);
726 }
727#endif
728
ff0cee69
PP
729 /* We must account for everything. */
730
731 /* Destroy the main CV and syntax tree */
37e77c23
FC
732 /* Set PL_curcop now, because destroying ops can cause new SVs
733 to be generated in Perl_pad_swipe, and when running with
734 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
735 op from which the filename structure member is copied. */
17fbfdf6 736 PL_curcop = &PL_compiling;
3280af22 737 if (PL_main_root) {
4e380990
DM
738 /* ensure comppad/curpad to refer to main's pad */
739 if (CvPADLIST(PL_main_cv)) {
740 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
741 }
3280af22 742 op_free(PL_main_root);
5f66b61c 743 PL_main_root = NULL;
a0d0e21e 744 }
5f66b61c 745 PL_main_start = NULL;
aac9d523
DM
746 /* note that PL_main_cv isn't usually actually freed at this point,
747 * due to the CvOUTSIDE refs from subs compiled within it. It will
748 * get freed once all the subs are freed in sv_clean_all(), for
749 * destruct_level > 0 */
3280af22 750 SvREFCNT_dec(PL_main_cv);
601f1833 751 PL_main_cv = NULL;
ca7b837b 752 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 753
13621cfb
NIS
754 /* Tell PerlIO we are about to tear things apart in case
755 we have layers which are using resources that should
756 be cleaned up now.
757 */
758
759 PerlIO_destruct(aTHX);
760
ddf23d4a
SM
761 /*
762 * Try to destruct global references. We do this first so that the
763 * destructors and destructees still exist. Some sv's might remain.
764 * Non-referenced objects are on their own.
765 */
766 sv_clean_objs();
8990e307 767
5cd24f17 768 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 769 SvREFCNT_dec(PL_warnhook);
a0714e2c 770 PL_warnhook = NULL;
3280af22 771 SvREFCNT_dec(PL_diehook);
a0714e2c 772 PL_diehook = NULL;
5cd24f17 773
4b556e6c 774 /* call exit list functions */
3280af22 775 while (PL_exitlistlen-- > 0)
acfe0abc 776 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 777
3280af22 778 Safefree(PL_exitlist);
4b556e6c 779
1c4916e5
CB
780 PL_exitlist = NULL;
781 PL_exitlistlen = 0;
782
a3e6e81e
NC
783 SvREFCNT_dec(PL_registered_mros);
784
551a8b83 785 /* jettison our possibly duplicated environment */
4b647fb0
DM
786 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
787 * so we certainly shouldn't free it here
788 */
2f42fcb0 789#ifndef PERL_MICRO
4b647fb0 790#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 791 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
792#ifdef USE_ITHREADS
793 /* only main thread can free environ[0] contents */
794 && PL_curinterp == aTHX
795#endif
796 )
797 {
551a8b83
JH
798 I32 i;
799
800 for (i = 0; environ[i]; i++)
4b420006 801 safesysfree(environ[i]);
0631ea03 802
4b420006
JH
803 /* Must use safesysfree() when working with environ. */
804 safesysfree(environ);
551a8b83
JH
805
806 environ = PL_origenviron;
807 }
808#endif
2f42fcb0 809#endif /* !PERL_MICRO */
551a8b83 810
30985c42
JH
811 if (destruct_level == 0) {
812
813 DEBUG_P(debprofdump());
814
815#if defined(PERLIO_LAYERS)
816 /* No more IO - including error messages ! */
817 PerlIO_cleanup(aTHX);
818#endif
819
820 CopFILE_free(&PL_compiling);
30985c42
JH
821
822 /* The exit() function will do everything that needs doing. */
823 return STATUS_EXIT;
824 }
825
5f8cb046
DM
826#ifdef USE_ITHREADS
827 /* the syntax tree is shared between clones
828 * so op_free(PL_main_root) only ReREFCNT_dec's
829 * REGEXPs in the parent interpreter
830 * we need to manually ReREFCNT_dec for the clones
831 */
0547a729
DM
832 {
833 I32 i = AvFILLp(PL_regex_padav);
834 SV **ary = AvARRAY(PL_regex_padav);
835
836 for (; i; i--) {
837 SvREFCNT_dec(ary[i]);
838 ary[i] = &PL_sv_undef;
839 }
840 }
5f8cb046
DM
841#endif
842
0547a729 843
ad64d0ec 844 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
845 PL_stashcache = NULL;
846
5f05dabc
PP
847 /* loosen bonds of global variables */
848
2f9285f8
DM
849 /* XXX can PL_parser still be non-null here? */
850 if(PL_parser && PL_parser->rsfp) {
851 (void)PerlIO_close(PL_parser->rsfp);
852 PL_parser->rsfp = NULL;
8ebc5c01
PP
853 }
854
84386e14
RGS
855 if (PL_minus_F) {
856 Safefree(PL_splitstr);
857 PL_splitstr = NULL;
858 }
859
8ebc5c01 860 /* switches */
3280af22
NIS
861 PL_minus_n = FALSE;
862 PL_minus_p = FALSE;
863 PL_minus_l = FALSE;
864 PL_minus_a = FALSE;
865 PL_minus_F = FALSE;
866 PL_doswitches = FALSE;
599cee73 867 PL_dowarn = G_WARN_OFF;
1a904fc8 868#ifdef PERL_SAWAMPERSAND
d3b97530 869 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 870#endif
3280af22
NIS
871 PL_unsafe = FALSE;
872
873 Safefree(PL_inplace);
bd61b366 874 PL_inplace = NULL;
a7cb1f99 875 SvREFCNT_dec(PL_patchlevel);
1e8125c6 876 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
877
878 if (PL_e_script) {
879 SvREFCNT_dec(PL_e_script);
a0714e2c 880 PL_e_script = NULL;
8ebc5c01
PP
881 }
882
bf9cdc68
RG
883 PL_perldb = 0;
884
8ebc5c01
PP
885 /* magical thingies */
886
e23d9e2f
CS
887 SvREFCNT_dec(PL_ofsgv); /* *, */
888 PL_ofsgv = NULL;
5f05dabc 889
7889fe52 890 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 891 PL_ors_sv = NULL;
8ebc5c01 892
3280af22 893 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 894 PL_rs = NULL;
dc92893f 895
d33b2eba 896 Safefree(PL_osname); /* $^O */
bd61b366 897 PL_osname = NULL;
5f05dabc 898
3280af22 899 SvREFCNT_dec(PL_statname);
a0714e2c
SS
900 PL_statname = NULL;
901 PL_statgv = NULL;
5f05dabc 902
8ebc5c01
PP
903 /* defgv, aka *_ should be taken care of elsewhere */
904
7d5ea4e7
GS
905 /* float buffer */
906 Safefree(PL_efloatbuf);
bd61b366 907 PL_efloatbuf = NULL;
7d5ea4e7
GS
908 PL_efloatsize = 0;
909
8ebc5c01 910 /* startup and shutdown function lists */
3280af22 911 SvREFCNT_dec(PL_beginav);
5a837c8f 912 SvREFCNT_dec(PL_beginav_save);
3280af22 913 SvREFCNT_dec(PL_endav);
7d30b5c4 914 SvREFCNT_dec(PL_checkav);
ece599bd 915 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
916 SvREFCNT_dec(PL_unitcheckav);
917 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 918 SvREFCNT_dec(PL_initav);
7d49f689
NC
919 PL_beginav = NULL;
920 PL_beginav_save = NULL;
921 PL_endav = NULL;
922 PL_checkav = NULL;
923 PL_checkav_save = NULL;
3c10abe3
AG
924 PL_unitcheckav = NULL;
925 PL_unitcheckav_save = NULL;
7d49f689 926 PL_initav = NULL;
5618dfe8 927
8ebc5c01 928 /* shortcuts just get cleared */
a0714e2c
SS
929 PL_envgv = NULL;
930 PL_incgv = NULL;
931 PL_hintgv = NULL;
932 PL_errgv = NULL;
933 PL_argvgv = NULL;
934 PL_argvoutgv = NULL;
935 PL_stdingv = NULL;
936 PL_stderrgv = NULL;
937 PL_last_in_gv = NULL;
938 PL_replgv = NULL;
939 PL_DBgv = NULL;
940 PL_DBline = NULL;
941 PL_DBsub = NULL;
942 PL_DBsingle = NULL;
943 PL_DBtrace = NULL;
944 PL_DBsignal = NULL;
601f1833 945 PL_DBcv = NULL;
7d49f689 946 PL_dbargs = NULL;
5c284bb0 947 PL_debstash = NULL;
8ebc5c01 948
7a1c5554 949 SvREFCNT_dec(PL_argvout_stack);
7d49f689 950 PL_argvout_stack = NULL;
8ebc5c01 951
5c831c24 952 SvREFCNT_dec(PL_modglobal);
5c284bb0 953 PL_modglobal = NULL;
5c831c24 954 SvREFCNT_dec(PL_preambleav);
7d49f689 955 PL_preambleav = NULL;
5c831c24 956 SvREFCNT_dec(PL_subname);
a0714e2c 957 PL_subname = NULL;
ca0c25f6 958#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 959 SvREFCNT_dec(PL_pidstatus);
5c284bb0 960 PL_pidstatus = NULL;
ca0c25f6 961#endif
5c831c24 962 SvREFCNT_dec(PL_toptarget);
a0714e2c 963 PL_toptarget = NULL;
5c831c24 964 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
965 PL_bodytarget = NULL;
966 PL_formtarget = NULL;
5c831c24 967
d33b2eba 968 /* free locale stuff */
b9582b6a 969#ifdef USE_LOCALE_COLLATE
d33b2eba 970 Safefree(PL_collation_name);
bd61b366 971 PL_collation_name = NULL;
b9582b6a 972#endif
d33b2eba 973
b9582b6a 974#ifdef USE_LOCALE_NUMERIC
d33b2eba 975 Safefree(PL_numeric_name);
bd61b366 976 PL_numeric_name = NULL;
a453c169 977 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 978 PL_numeric_radix_sv = NULL;
b9582b6a 979#endif
d33b2eba 980
9c0b6888
KW
981 /* clear character classes */
982 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
983 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
984 PL_utf8_swash_ptrs[i] = NULL;
985 }
5c831c24
GS
986 SvREFCNT_dec(PL_utf8_mark);
987 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 988 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 989 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 990 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
991 SvREFCNT_dec(PL_utf8_idstart);
992 SvREFCNT_dec(PL_utf8_idcont);
2726813d 993 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c
SS
994 PL_utf8_mark = NULL;
995 PL_utf8_toupper = NULL;
996 PL_utf8_totitle = NULL;
997 PL_utf8_tolower = NULL;
998 PL_utf8_tofold = NULL;
999 PL_utf8_idstart = NULL;
1000 PL_utf8_idcont = NULL;
2726813d 1001 PL_utf8_foldclosures = NULL;
86f72d56 1002 for (i = 0; i < POSIX_CC_COUNT; i++) {
30f9bdb0
KW
1003 SvREFCNT_dec(PL_Posix_ptrs[i]);
1004 PL_Posix_ptrs[i] = NULL;
1005
86f72d56
KW
1006 SvREFCNT_dec(PL_L1Posix_ptrs[i]);
1007 PL_L1Posix_ptrs[i] = NULL;
cac6e0ca
KW
1008
1009 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1010 PL_XPosix_ptrs[i] = NULL;
86f72d56 1011 }
5c831c24 1012
971a9dd3 1013 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1014 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1015 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1016 cophh_free(CopHINTHASH_get(&PL_compiling));
1017 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1018 CopFILE_free(&PL_compiling);
5c831c24 1019
a0d0e21e 1020 /* Prepare to destruct main symbol table. */
5f05dabc 1021
3280af22 1022 hv = PL_defstash;
ca556bcd
DM
1023 /* break ref loop *:: <=> %:: */
1024 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1025 PL_defstash = 0;
a0d0e21e 1026 SvREFCNT_dec(hv);
5c831c24 1027 SvREFCNT_dec(PL_curstname);
a0714e2c 1028 PL_curstname = NULL;
a0d0e21e 1029
5a844595
GS
1030 /* clear queued errors */
1031 SvREFCNT_dec(PL_errors);
a0714e2c 1032 PL_errors = NULL;
5a844595 1033
dd69841b
BB
1034 SvREFCNT_dec(PL_isarev);
1035
a0d0e21e 1036 FREETMPS;
9b387841 1037 if (destruct_level >= 2) {
3280af22 1038 if (PL_scopestack_ix != 0)
9b387841
NC
1039 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1040 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1041 (long)PL_scopestack_ix);
3280af22 1042 if (PL_savestack_ix != 0)
9b387841
NC
1043 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1044 "Unbalanced saves: %ld more saves than restores\n",
1045 (long)PL_savestack_ix);
3280af22 1046 if (PL_tmps_floor != -1)
9b387841
NC
1047 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1048 (long)PL_tmps_floor + 1);
a0d0e21e 1049 if (cxstack_ix != -1)
9b387841
NC
1050 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1051 (long)cxstack_ix + 1);
a0d0e21e 1052 }
8990e307 1053
0547a729
DM
1054#ifdef USE_ITHREADS
1055 SvREFCNT_dec(PL_regex_padav);
1056 PL_regex_padav = NULL;
1057 PL_regex_pad = NULL;
1058#endif
1059
776df701 1060#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1061 /* the entries in this list are allocated via SV PVX's, so get freed
1062 * in sv_clean_all */
1063 Safefree(PL_my_cxt_list);
776df701 1064#endif
57bb2458 1065
8990e307 1066 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1067
1068 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1069 while (sv_clean_all() > 2)
5226ed68
JH
1070 ;
1071
23083432
FC
1072#ifdef USE_ITHREADS
1073 Safefree(PL_stashpad); /* must come after sv_clean_all */
1074#endif
1075
d4777f27
GS
1076 AvREAL_off(PL_fdpid); /* no surviving entries */
1077 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1078 PL_fdpid = NULL;
d33b2eba 1079
6c644e78
GS
1080#ifdef HAVE_INTERP_INTERN
1081 sys_intern_clear();
1082#endif
1083
6e72f9df
PP
1084 /* Destruct the global string table. */
1085 {
1086 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1087 * so that sv_free() won't fail on them.
80459961
NC
1088 * Now that the global string table is using a single hunk of memory
1089 * for both HE and HEK, we either need to explicitly unshare it the
1090 * correct way, or actually free things here.
6e72f9df 1091 */
80459961
NC
1092 I32 riter = 0;
1093 const I32 max = HvMAX(PL_strtab);
c4420975 1094 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1095 HE *hent = array[0];
1096
6e72f9df 1097 for (;;) {
0453d815 1098 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1099 HE * const next = HeNEXT(hent);
9014280d 1100 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1101 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1102 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1103 Safefree(hent);
1104 hent = next;
6e72f9df
PP
1105 }
1106 if (!hent) {
1107 if (++riter > max)
1108 break;
1109 hent = array[riter];
1110 }
1111 }
80459961
NC
1112
1113 Safefree(array);
1114 HvARRAY(PL_strtab) = 0;
1115 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1116 }
3280af22 1117 SvREFCNT_dec(PL_strtab);
6e72f9df 1118
e652bb2f 1119#ifdef USE_ITHREADS
c21d1a0f 1120 /* free the pointer tables used for cloning */
a0739874 1121 ptr_table_free(PL_ptr_table);
bf9cdc68 1122 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1123#endif
a0739874 1124
d33b2eba
GS
1125 /* free special SVs */
1126
1127 SvREFCNT(&PL_sv_yes) = 0;
1128 sv_clear(&PL_sv_yes);
1129 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1130 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1131
1132 SvREFCNT(&PL_sv_no) = 0;
1133 sv_clear(&PL_sv_no);
1134 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1135 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1136
9f375a43
DM
1137 {
1138 int i;
1139 for (i=0; i<=2; i++) {
1140 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1141 sv_clear(PERL_DEBUG_PAD(i));
1142 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1143 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1144 }
1145 }
1146
0453d815 1147 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1148 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1149
eba0f806
DM
1150#ifdef DEBUG_LEAKING_SCALARS
1151 if (PL_sv_count != 0) {
1152 SV* sva;
1153 SV* sv;
eb578fdb 1154 SV* svend;
eba0f806 1155
ad64d0ec 1156 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1157 svend = &sva[SvREFCNT(sva)];
1158 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1159 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1160 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1161 " flags=0x%"UVxf
fd0854ff 1162 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1163 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1164 "serial %"UVuf"\n",
574b8821
NC
1165 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1166 pTHX__VALUE,
fd0854ff
DM
1167 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1168 sv->sv_debug_line,
1169 sv->sv_debug_inpad ? "for" : "by",
1170 sv->sv_debug_optype ?
1171 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1172 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1173 sv->sv_debug_serial
fd0854ff 1174 );
2aa47728 1175#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1176 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1177#endif
eba0f806
DM
1178 }
1179 }
1180 }
1181 }
2aa47728
NC
1182#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1183 {
1184 int status;
1185 fd_set rset;
1186 /* Wait for up to 4 seconds for child to terminate.
1187 This seems to be the least effort way of timing out on reaping
1188 its exit status. */
1189 struct timeval waitfor = {4, 0};
41e4abd8 1190 int sock = PL_dumper_fd;
2aa47728
NC
1191
1192 shutdown(sock, 1);
1193 FD_ZERO(&rset);
1194 FD_SET(sock, &rset);
1195 select(sock + 1, &rset, NULL, NULL, &waitfor);
1196 waitpid(child, &status, WNOHANG);
1197 close(sock);
1198 }
1199#endif
eba0f806 1200#endif
77abb4c6
NC
1201#ifdef DEBUG_LEAKING_SCALARS_ABORT
1202 if (PL_sv_count)
1203 abort();
1204#endif
bf9cdc68 1205 PL_sv_count = 0;
eba0f806 1206
56a2bab7 1207#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1208 /* No more IO - including error messages ! */
1209 PerlIO_cleanup(aTHX);
1210#endif
1211
9f4bd222 1212 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1213 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1214 for no arg - and will try and SvREFCNT_dec it.
1215 */
1216 SvREFCNT(&PL_sv_undef) = 0;
1217 SvREADONLY_off(&PL_sv_undef);
1218
3280af22 1219 Safefree(PL_origfilename);
bd61b366 1220 PL_origfilename = NULL;
43c5f42d 1221 Safefree(PL_reg_curpm);
82ba1be6 1222 Safefree(PL_reg_poscache);
dd28f7bb 1223 free_tied_hv_pool();
3280af22 1224 Safefree(PL_op_mask);
cf36064f 1225 Safefree(PL_psig_name);
bf9cdc68 1226 PL_psig_name = (SV**)NULL;
d525a7b2 1227 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1228 {
1229 /* We need to NULL PL_psig_pend first, so that
1230 signal handlers know not to use it */
1231 int *psig_save = PL_psig_pend;
1232 PL_psig_pend = (int*)NULL;
1233 Safefree(psig_save);
1234 }
6e72f9df 1235 nuke_stacks();
284167a5
SM
1236 TAINTING_set(FALSE);
1237 TAINT_WARN_set(FALSE);
3280af22 1238 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1239 PL_debug = 0;
ac27b0f5 1240
a0d0e21e 1241 DEBUG_P(debprofdump());
d33b2eba 1242
e5dd39fc 1243#ifdef USE_REENTRANT_API
10bc17b6 1244 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1245#endif
1246
612f20c3
GS
1247 sv_free_arenas();
1248
5d9a96ca
DM
1249 while (PL_regmatch_slab) {
1250 regmatch_slab *s = PL_regmatch_slab;
1251 PL_regmatch_slab = PL_regmatch_slab->next;
1252 Safefree(s);
1253 }
1254
fc36a67e
PP
1255 /* As the absolutely last thing, free the non-arena SV for mess() */
1256
3280af22 1257 if (PL_mess_sv) {
f350b448
NC
1258 /* we know that type == SVt_PVMG */
1259
9c63abab 1260 /* it could have accumulated taint magic */
f350b448
NC
1261 MAGIC* mg;
1262 MAGIC* moremagic;
1263 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1264 moremagic = mg->mg_moremagic;
1265 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1266 && mg->mg_len >= 0)
1267 Safefree(mg->mg_ptr);
1268 Safefree(mg);
9c63abab 1269 }
f350b448 1270
fc36a67e 1271 /* we know that type >= SVt_PV */
8bd4d4c5 1272 SvPV_free(PL_mess_sv);
3280af22
NIS
1273 Safefree(SvANY(PL_mess_sv));
1274 Safefree(PL_mess_sv);
a0714e2c 1275 PL_mess_sv = NULL;
fc36a67e 1276 }
37038d91 1277 return STATUS_EXIT;
79072805
LW
1278}
1279
954c1994
GS
1280/*
1281=for apidoc perl_free
1282
1283Releases a Perl interpreter. See L<perlembed>.
1284
1285=cut
1286*/
1287
79072805 1288void
0cb96387 1289perl_free(pTHXx)
79072805 1290{
5174512c
NC
1291 dVAR;
1292
7918f24d
NC
1293 PERL_ARGS_ASSERT_PERL_FREE;
1294
c301d606
DM
1295 if (PL_veto_cleanup)
1296 return;
1297
7cb608b5 1298#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1299 {
1300 /*
1301 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1302 * value as we're probably hunting memory leaks then
1303 */
36e77d41 1304 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1305 const U32 old_debug = PL_debug;
55ef9aae
MHM
1306 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1307 thread at thread exit. */
4fd0a9b8
NC
1308 if (DEBUG_m_TEST) {
1309 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1310 "free this thread's memory\n");
1311 PL_debug &= ~ DEBUG_m_FLAG;
1312 }
55ef9aae
MHM
1313 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1314 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1315 PL_debug = old_debug;
55ef9aae
MHM
1316 }
1317 }
7cb608b5
NC
1318#endif
1319
acfe0abc 1320#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1321# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1322 {
acfe0abc 1323# ifdef NETWARE
7af12a34 1324 void *host = nw_internal_host;
acfe0abc 1325# else
7af12a34 1326 void *host = w32_internal_host;
acfe0abc 1327# endif
7af12a34 1328 PerlMem_free(aTHXx);
acfe0abc 1329# ifdef NETWARE
7af12a34 1330 nw_delete_internal_host(host);
acfe0abc 1331# else
7af12a34 1332 win32_delete_internal_host(host);
acfe0abc 1333# endif
7af12a34 1334 }
1c0ca838
GS
1335# else
1336 PerlMem_free(aTHXx);
1337# endif
acfe0abc
GS
1338#else
1339 PerlMem_free(aTHXx);
76e3520e 1340#endif
79072805
LW
1341}
1342
b7f7fff6 1343#if defined(USE_ITHREADS)
aebd1ac7
GA
1344/* provide destructors to clean up the thread key when libperl is unloaded */
1345#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1346
826955bd 1347#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1348#pragma fini "perl_fini"
666ad1ec
GA
1349#elif defined(__sun) && !defined(__GNUC__)
1350#pragma fini (perl_fini)
aebd1ac7
GA
1351#endif
1352
0dbb1585
AL
1353static void
1354#if defined(__GNUC__)
1355__attribute__((destructor))
aebd1ac7 1356#endif
de009b76 1357perl_fini(void)
aebd1ac7 1358{
27da23d5 1359 dVAR;
c301d606 1360 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1361 FREE_THREAD_KEY;
1362}
1363
1364#endif /* WIN32 */
1365#endif /* THREADS */
1366
4b556e6c 1367void
864dbfa3 1368Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1369{
97aff369 1370 dVAR;
3280af22
NIS
1371 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1372 PL_exitlist[PL_exitlistlen].fn = fn;
1373 PL_exitlist[PL_exitlistlen].ptr = ptr;
1374 ++PL_exitlistlen;
4b556e6c
JD
1375}
1376
b7975bdd
NC
1377STATIC void
1378S_set_caret_X(pTHX) {
97aff369 1379 dVAR;
fafc274c 1380 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1381 if (tmpgv) {
0f1723e1 1382 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1383#if defined(OS2)
1384 sv_setpv(caret_x, os2_execname(aTHX));
1385#else
2982a345
NC
1386# ifdef USE_KERN_PROC_PATHNAME
1387 size_t size = 0;
1388 int mib[4];
1389 mib[0] = CTL_KERN;
1390 mib[1] = KERN_PROC;
1391 mib[2] = KERN_PROC_PATHNAME;
1392 mib[3] = -1;
1393
1394 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1395 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1396 sv_grow(caret_x, size);
1397
1398 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1399 && size > 2) {
1400 SvPOK_only(caret_x);
1401 SvCUR_set(caret_x, size - 1);
1402 SvTAINT(caret_x);
1403 return;
1404 }
1405 }
ae60cb46
NC
1406# elif defined(USE_NSGETEXECUTABLEPATH)
1407 char buf[1];
1408 uint32_t size = sizeof(buf);
ae60cb46
NC
1409
1410 _NSGetExecutablePath(buf, &size);
1411 if (size < MAXPATHLEN * MAXPATHLEN) {
1412 sv_grow(caret_x, size);
1413 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1414 char *const tidied = realpath(SvPVX(caret_x), NULL);
1415 if (tidied) {
1416 sv_setpv(caret_x, tidied);
1417 free(tidied);
1418 } else {
1419 SvPOK_only(caret_x);
1420 SvCUR_set(caret_x, size);
1421 }
1422 return;
1423 }
1424 }
2982a345 1425# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1426 char buf[MAXPATHLEN];
1427 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1428
1429 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1430 includes a spurious NUL which will cause $^X to fail in system
1431 or backticks (this will prevent extensions from being built and
1432 many tests from working). readlink is not meant to add a NUL.
1433 Normal readlink works fine.
1434 */
1435 if (len > 0 && buf[len-1] == '\0') {
1436 len--;
1437 }
1438
1439 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1440 returning the text "unknown" from the readlink rather than the path
1441 to the executable (or returning an error from the readlink). Any
1442 valid path has a '/' in it somewhere, so use that to validate the
1443 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1444 */
1445 if (len > 0 && memchr(buf, '/', len)) {
1446 sv_setpvn(caret_x, buf, len);
82552a95 1447 return;
700dd4f8 1448 }
82552a95
NC
1449# endif
1450 /* Fallback to this: */
0f1723e1 1451 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1452#endif
b7975bdd
NC
1453 }
1454}
1455
954c1994
GS
1456/*
1457=for apidoc perl_parse
1458
1459Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1460
1461=cut
1462*/
1463
03d9f026
FC
1464#define SET_CURSTASH(newstash) \
1465 if (PL_curstash != newstash) { \
1466 SvREFCNT_dec(PL_curstash); \
1467 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1468 }
1469
79072805 1470int
0cb96387 1471perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1472{
27da23d5 1473 dVAR;
6224f72b 1474 I32 oldscope;
6224f72b 1475 int ret;
db36c5a1 1476 dJMPENV;
8d063cd8 1477
7918f24d
NC
1478 PERL_ARGS_ASSERT_PERL_PARSE;
1479#ifndef MULTIPLICITY
ed6c66dd 1480 PERL_UNUSED_ARG(my_perl);
7918f24d 1481#endif
7dc86639 1482#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1483 {
7dc86639
YO
1484 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1485
1486 if (s && (atoi(s) == 1)) {
1487 unsigned char *seed= PERL_HASH_SEED;
1488 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1489 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1490 while (seed < seed_end) {
1491 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1492 }
1493 PerlIO_printf(Perl_debug_log, "\n");
1494 }
b0891165
JH
1495 }
1496#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1497 PL_origargc = argc;
e2975953 1498 PL_origargv = argv;
a0d0e21e 1499
a2722ac9
GA
1500 if (PL_origalen != 0) {
1501 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1502 }
1503 else {
3cb9023d
JH
1504 /* Set PL_origalen be the sum of the contiguous argv[]
1505 * elements plus the size of the env in case that it is
e9137a8e 1506 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1507 * as the maximum modifiable length of $0. In the worst case
1508 * the area we are able to modify is limited to the size of
43c32782 1509 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1510 * --jhi */
e1ec3a88 1511 const char *s = NULL;
54bfe034 1512 int i;
1b6737cc 1513 const UV mask =
7d8e7db3 1514 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1515 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1516 const UV aligned =
43c32782
JH
1517 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1518
1519 /* See if all the arguments are contiguous in memory. Note
1520 * that 'contiguous' is a loose term because some platforms
1521 * align the argv[] and the envp[]. If the arguments look
1522 * like non-aligned, assume that they are 'strictly' or
1523 * 'traditionally' contiguous. If the arguments look like
1524 * aligned, we just check that they are within aligned
1525 * PTRSIZE bytes. As long as no system has something bizarre
1526 * like the argv[] interleaved with some other data, we are
1527 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1528 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1529 while (*s) s++;
1530 for (i = 1; i < PL_origargc; i++) {
1531 if ((PL_origargv[i] == s + 1
43c32782 1532#ifdef OS2
c8941eeb 1533 || PL_origargv[i] == s + 2
43c32782 1534#endif
c8941eeb
JH
1535 )
1536 ||
1537 (aligned &&
1538 (PL_origargv[i] > s &&
1539 PL_origargv[i] <=
1540 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1541 )
1542 {
1543 s = PL_origargv[i];
1544 while (*s) s++;
1545 }
1546 else
1547 break;
54bfe034 1548 }
54bfe034 1549 }
a4a109c2
JD
1550
1551#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1552 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1553 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1554 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1555 ||
1556 (aligned &&
1557 (PL_origenviron[0] > s &&
1558 PL_origenviron[0] <=
1559 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1560 )
1561 {
9d419b5f 1562#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1563 s = PL_origenviron[0];
1564 while (*s) s++;
1565#endif
bd61b366 1566 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1567 /* Force copy of environment. */
1568 for (i = 1; PL_origenviron[i]; i++) {
1569 if (PL_origenviron[i] == s + 1
1570 ||
1571 (aligned &&
1572 (PL_origenviron[i] > s &&
1573 PL_origenviron[i] <=
1574 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1575 )
1576 {
1577 s = PL_origenviron[i];
1578 while (*s) s++;
1579 }
1580 else
1581 break;
54bfe034 1582 }
43c32782 1583 }
54bfe034 1584 }
a4a109c2
JD
1585#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1586
2d2af554 1587 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1588 }
1589
3280af22 1590 if (PL_do_undump) {
a0d0e21e
LW
1591
1592 /* Come here if running an undumped a.out. */
1593
3280af22
NIS
1594 PL_origfilename = savepv(argv[0]);
1595 PL_do_undump = FALSE;
a0d0e21e 1596 cxstack_ix = -1; /* start label stack again */
748a9306 1597 init_ids();
284167a5 1598 assert (!TAINT_get);
b7975bdd
NC
1599 TAINT;
1600 S_set_caret_X(aTHX);
1601 TAINT_NOT;
a0d0e21e
LW
1602 init_postdump_symbols(argc,argv,env);
1603 return 0;
1604 }
1605
3280af22 1606 if (PL_main_root) {
3280af22 1607 op_free(PL_main_root);
5f66b61c 1608 PL_main_root = NULL;
ff0cee69 1609 }
5f66b61c 1610 PL_main_start = NULL;
3280af22 1611 SvREFCNT_dec(PL_main_cv);
601f1833 1612 PL_main_cv = NULL;
79072805 1613
3280af22
NIS
1614 time(&PL_basetime);
1615 oldscope = PL_scopestack_ix;
599cee73 1616 PL_dowarn = G_WARN_OFF;
f86702cc 1617
14dd3ad8 1618 JMPENV_PUSH(ret);
6224f72b 1619 switch (ret) {
312caa8e 1620 case 0:
14dd3ad8 1621 parse_body(env,xsinit);
9ebf26ad 1622 if (PL_unitcheckav) {
3c10abe3 1623 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1624 }
1625 if (PL_checkav) {
ca7b837b 1626 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1627 call_list(oldscope, PL_checkav);
9ebf26ad 1628 }
14dd3ad8
GS
1629 ret = 0;
1630 break;
6224f72b
GS
1631 case 1:
1632 STATUS_ALL_FAILURE;
1633 /* FALL THROUGH */
1634 case 2:
1635 /* my_exit() was called */
3280af22 1636 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1637 LEAVE;
1638 FREETMPS;
03d9f026 1639 SET_CURSTASH(PL_defstash);
9ebf26ad 1640 if (PL_unitcheckav) {
3c10abe3 1641 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1642 }
1643 if (PL_checkav) {
ca7b837b 1644 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1645 call_list(oldscope, PL_checkav);
9ebf26ad 1646 }
37038d91 1647 ret = STATUS_EXIT;
14dd3ad8 1648 break;
6224f72b 1649 case 3:
bf49b057 1650 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1651 ret = 1;
1652 break;
6224f72b 1653 }
14dd3ad8
GS
1654 JMPENV_POP;
1655 return ret;
1656}
1657
4a5df386
NC
1658/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1659 miniperl, and we need to see those flags reflected in the values here. */
1660
1661/* What this returns is subject to change. Use the public interface in Config.
1662 */
1663static void
1664S_Internals_V(pTHX_ CV *cv)
1665{
1666 dXSARGS;
1667#ifdef LOCAL_PATCH_COUNT
1668 const int local_patch_count = LOCAL_PATCH_COUNT;
1669#else
1670 const int local_patch_count = 0;
1671#endif
2dc296d2 1672 const int entries = 3 + local_patch_count;
4a5df386 1673 int i;
fe1c5936 1674 static const char non_bincompat_options[] =
4a5df386
NC
1675# ifdef DEBUGGING
1676 " DEBUGGING"
1677# endif
1678# ifdef NO_MATHOMS
0d311fbe 1679 " NO_MATHOMS"
4a5df386
NC
1680# endif
1681# ifdef PERL_DISABLE_PMC
1682 " PERL_DISABLE_PMC"
1683# endif
1684# ifdef PERL_DONT_CREATE_GVSV
1685 " PERL_DONT_CREATE_GVSV"
1686# endif
9a044a43
NC
1687# ifdef PERL_EXTERNAL_GLOB
1688 " PERL_EXTERNAL_GLOB"
1689# endif
4a5df386
NC
1690# ifdef PERL_IS_MINIPERL
1691 " PERL_IS_MINIPERL"
1692# endif
1693# ifdef PERL_MALLOC_WRAP
1694 " PERL_MALLOC_WRAP"
1695# endif
1696# ifdef PERL_MEM_LOG
1697 " PERL_MEM_LOG"
1698# endif
1699# ifdef PERL_MEM_LOG_NOIMPL
1700 " PERL_MEM_LOG_NOIMPL"
1701# endif
c3cf41ec
NC
1702# ifdef PERL_PRESERVE_IVUV
1703 " PERL_PRESERVE_IVUV"
1704# endif
c051e30b
NC
1705# ifdef PERL_RELOCATABLE_INCPUSH
1706 " PERL_RELOCATABLE_INCPUSH"
1707# endif
4a5df386
NC
1708# ifdef PERL_USE_DEVEL
1709 " PERL_USE_DEVEL"
1710# endif
1711# ifdef PERL_USE_SAFE_PUTENV
1712 " PERL_USE_SAFE_PUTENV"
1713# endif
a3749cf3
NC
1714# ifdef UNLINK_ALL_VERSIONS
1715 " UNLINK_ALL_VERSIONS"
1716# endif
de618ee4
NC
1717# ifdef USE_ATTRIBUTES_FOR_PERLIO
1718 " USE_ATTRIBUTES_FOR_PERLIO"
1719# endif
4a5df386
NC
1720# ifdef USE_FAST_STDIO
1721 " USE_FAST_STDIO"
1722# endif
98548bdf
NC
1723# ifdef USE_LOCALE
1724 " USE_LOCALE"
1725# endif
98548bdf
NC
1726# ifdef USE_LOCALE_CTYPE
1727 " USE_LOCALE_CTYPE"
1728# endif
5a8d8935
NC
1729# ifdef USE_PERL_ATOF
1730 " USE_PERL_ATOF"
1731# endif
0d311fbe
NC
1732# ifdef USE_SITECUSTOMIZE
1733 " USE_SITECUSTOMIZE"
1734# endif
4a5df386
NC
1735 ;
1736 PERL_UNUSED_ARG(cv);
1737 PERL_UNUSED_ARG(items);
1738
1739 EXTEND(SP, entries);
1740
1741 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1742 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1743 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1744
1745#ifdef __DATE__
1746# ifdef __TIME__
1747 PUSHs(Perl_newSVpvn_flags(aTHX_
1748 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1749 SVs_TEMP));
1750# else
1751 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1752 SVs_TEMP));
1753# endif
1754#else
1755 PUSHs(&PL_sv_undef);
1756#endif
1757
4a5df386
NC
1758 for (i = 1; i <= local_patch_count; i++) {
1759 /* This will be an undef, if PL_localpatches[i] is NULL. */
1760 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1761 }
1762
1763 XSRETURN(entries);
1764}
1765
be71fc8f
NC
1766#define INCPUSH_UNSHIFT 0x01
1767#define INCPUSH_ADD_OLD_VERS 0x02
1768#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1769#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1770#define INCPUSH_NOT_BASEDIR 0x10
1771#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1772#define INCPUSH_ADD_SUB_DIRS \
1773 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1774
312caa8e 1775STATIC void *
14dd3ad8 1776S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1777{
27da23d5 1778 dVAR;
2f9285f8 1779 PerlIO *rsfp;
312caa8e 1780 int argc = PL_origargc;
8f42b153 1781 char **argv = PL_origargv;
e1ec3a88 1782 const char *scriptname = NULL;
312caa8e 1783 VOL bool dosearch = FALSE;
eb578fdb 1784 char c;
737c24fc 1785 bool doextract = FALSE;
bd61b366 1786 const char *cddir = NULL;
ab019eaa 1787#ifdef USE_SITECUSTOMIZE
20ef40cf 1788 bool minus_f = FALSE;
ab019eaa 1789#endif
95670bde 1790 SV *linestr_sv = NULL;
5486870f 1791 bool add_read_e_script = FALSE;
87606032 1792 U32 lex_start_flags = 0;
009d90df 1793
ca7b837b 1794 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1795
6224f72b 1796 init_main_stash();
54310121 1797
c7030b81
NC
1798 {
1799 const char *s;
6224f72b
GS
1800 for (argc--,argv++; argc > 0; argc--,argv++) {
1801 if (argv[0][0] != '-' || !argv[0][1])
1802 break;
6224f72b
GS
1803 s = argv[0]+1;
1804 reswitch:
47f56822 1805 switch ((c = *s)) {
729a02f2 1806 case 'C':
1d5472a9
GS
1807#ifndef PERL_STRICT_CR
1808 case '\r':
1809#endif
6224f72b
GS
1810 case ' ':
1811 case '0':
1812 case 'F':
1813 case 'a':
1814 case 'c':
1815 case 'd':
1816 case 'D':
1817 case 'h':
1818 case 'i':
1819 case 'l':
1820 case 'M':
1821 case 'm':
1822 case 'n':
1823 case 'p':
1824 case 's':
1825 case 'u':
1826 case 'U':
1827 case 'v':
599cee73
PM
1828 case 'W':
1829 case 'X':
6224f72b 1830 case 'w':
97bd5664 1831 if ((s = moreswitches(s)))
6224f72b
GS
1832 goto reswitch;
1833 break;
33b78306 1834
1dbad523 1835 case 't':
284167a5
SM
1836#if SILENT_NO_TAINT_SUPPORT
1837 /* silently ignore */
1838#elif NO_TAINT_SUPPORT
1839 Perl_croak("This perl was compiled without taint support. "
1840 "Cowardly refusing to run with -t or -T flags");
1841#else
22f7c9c9 1842 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1843 if( !TAINTING_get ) {
1844 TAINT_WARN_set(TRUE);
1845 TAINTING_set(TRUE);
317ea90d 1846 }
284167a5 1847#endif
317ea90d
MS
1848 s++;
1849 goto reswitch;
6224f72b 1850 case 'T':
284167a5
SM
1851#if SILENT_NO_TAINT_SUPPORT
1852 /* silently ignore */
1853#elif NO_TAINT_SUPPORT
1854 Perl_croak("This perl was compiled without taint support. "
1855 "Cowardly refusing to run with -t or -T flags");
1856#else
22f7c9c9 1857 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1858 TAINTING_set(TRUE);
1859 TAINT_WARN_set(FALSE);
1860#endif
6224f72b
GS
1861 s++;
1862 goto reswitch;
f86702cc 1863
bc9b29db
RH
1864 case 'E':
1865 PL_minus_E = TRUE;
1866 /* FALL THROUGH */
6224f72b 1867 case 'e':
f20b2998 1868 forbid_setid('e', FALSE);
3280af22 1869 if (!PL_e_script) {
396482e1 1870 PL_e_script = newSVpvs("");
5486870f 1871 add_read_e_script = TRUE;
6224f72b
GS
1872 }
1873 if (*++s)
3280af22 1874 sv_catpv(PL_e_script, s);
6224f72b 1875 else if (argv[1]) {
3280af22 1876 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1877 argc--,argv++;
1878 }
1879 else
47f56822 1880 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1881 sv_catpvs(PL_e_script, "\n");
6224f72b 1882 break;
afe37c7d 1883
20ef40cf 1884 case 'f':
f5542d3a 1885#ifdef USE_SITECUSTOMIZE
20ef40cf 1886 minus_f = TRUE;
f5542d3a 1887#endif
20ef40cf
GA
1888 s++;
1889 goto reswitch;
1890
6224f72b 1891 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1892 forbid_setid('I', FALSE);
bd61b366 1893 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1894 argc--,argv++;
1895 }
6224f72b 1896 if (s && *s) {
0df16ed7 1897 STRLEN len = strlen(s);
55b4bc1c 1898 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1899 }
1900 else
a67e862a 1901 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1902 break;
6224f72b 1903 case 'S':
f20b2998 1904 forbid_setid('S', FALSE);
6224f72b
GS
1905 dosearch = TRUE;
1906 s++;
1907 goto reswitch;
1908 case 'V':
7edfd0ef
NC
1909 {
1910 SV *opts_prog;
1911
7edfd0ef 1912 if (*++s != ':') {
37ca4a5b 1913 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1914 }
1915 else {
1916 ++s;
1917 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1918 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1919 0, s, 0);
1920 s += strlen(s);
1921 }
37ca4a5b 1922 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1923 /* don't look for script or read stdin */
1924 scriptname = BIT_BUCKET;
1925 goto reswitch;
6224f72b 1926 }
6224f72b 1927 case 'x':
737c24fc 1928 doextract = TRUE;
6224f72b 1929 s++;
304334da 1930 if (*s)
f4c556ac 1931 cddir = s;
6224f72b
GS
1932 break;
1933 case 0:
1934 break;
1935 case '-':
1936 if (!*++s || isSPACE(*s)) {
1937 argc--,argv++;
1938 goto switch_end;
1939 }
ee8bc8b7
NC
1940 /* catch use of gnu style long options.
1941 Both of these exit immediately. */
1942 if (strEQ(s, "version"))
1943 minus_v();
1944 if (strEQ(s, "help"))
1945 usage();
6224f72b
GS
1946 s--;
1947 /* FALL THROUGH */
1948 default:
cea2e8a9 1949 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1950 }
1951 }
c7030b81
NC
1952 }
1953
6224f72b 1954 switch_end:
54310121 1955
c7030b81
NC
1956 {
1957 char *s;
1958
f675dbe5
CB
1959 if (
1960#ifndef SECURE_INTERNAL_GETENV
284167a5 1961 !TAINTING_get &&
f675dbe5 1962#endif
cf756827 1963 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1964 {
74288ac8
GS
1965 while (isSPACE(*s))
1966 s++;
317ea90d 1967 if (*s == '-' && *(s+1) == 'T') {
284167a5
SM
1968#if SILENT_NO_TAINT_SUPPORT
1969 /* silently ignore */
1970#elif NO_TAINT_SUPPORT
1971 Perl_croak("This perl was compiled without taint support. "
1972 "Cowardly refusing to run with -t or -T flags");
1973#else
22f7c9c9 1974 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1975 TAINTING_set(TRUE);
1976 TAINT_WARN_set(FALSE);
1977#endif
317ea90d 1978 }
74288ac8 1979 else {
bd61b366 1980 char *popt_copy = NULL;
74288ac8 1981 while (s && *s) {
54913509 1982 const char *d;
74288ac8
GS
1983 while (isSPACE(*s))
1984 s++;
1985 if (*s == '-') {
1986 s++;
1987 if (isSPACE(*s))
1988 continue;
1989 }
4ea8f8fb 1990 d = s;
74288ac8
GS
1991 if (!*s)
1992 break;
2b622f1a 1993 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1994 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1995 while (++s && *s) {
1996 if (isSPACE(*s)) {
cf756827 1997 if (!popt_copy) {
bfa6c418
NC
1998 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1999 s = popt_copy + (s - d);
2000 d = popt_copy;
cf756827 2001 }
4ea8f8fb
MS
2002 *s++ = '\0';
2003 break;
2004 }
2005 }
1c4db469 2006 if (*d == 't') {
284167a5
SM
2007#if SILENT_NO_TAINT_SUPPORT
2008 /* silently ignore */
2009#elif NO_TAINT_SUPPORT
2010 Perl_croak("This perl was compiled without taint support. "
2011 "Cowardly refusing to run with -t or -T flags");
2012#else
2013 if( !TAINTING_get) {
2014 TAINT_WARN_set(TRUE);
2015 TAINTING_set(TRUE);
317ea90d 2016 }
284167a5 2017#endif
1c4db469 2018 } else {
97bd5664 2019 moreswitches(d);
1c4db469 2020 }
6224f72b 2021 }
6224f72b
GS
2022 }
2023 }
c7030b81 2024 }
a0d0e21e 2025
c29067d7
CH
2026 /* Set $^X early so that it can be used for relocatable paths in @INC */
2027 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2028 assert (!TAINT_get);
c29067d7
CH
2029 TAINT;
2030 S_set_caret_X(aTHX);
2031 TAINT_NOT;
2032
43c0c913 2033#if defined(USE_SITECUSTOMIZE)
20ef40cf 2034 if (!minus_f) {
43c0c913 2035 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2036 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2037 ie a q() operator with a NUL byte as a the delimiter. This avoids
2038 problems with pathnames containing (say) ' */
43c0c913
NC
2039# ifdef PERL_IS_MINIPERL
2040 AV *const inc = GvAV(PL_incgv);
2041 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2042
2043 if (inc0) {
2044 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2045 Perl_newSVpvf(aTHX_
fc81b718
NC
2046 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2047 0, *inc0, 0,
2048 0, *inc0, 0));
43c0c913
NC
2049 }
2050# else
2051 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2052 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2053 if (raw_sitelib) {
2054 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2055 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2056 INCPUSH_CAN_RELOCATE);
2057 const char *const sitelib = SvPVX(sitelib_sv);
2058 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2059 Perl_newSVpvf(aTHX_
2060 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2061 0, sitelib, 0,
2062 0, sitelib, 0));
2063 assert (SvREFCNT(sitelib_sv) == 1);
2064 SvREFCNT_dec(sitelib_sv);
2065 }
43c0c913 2066# endif
20ef40cf
GA
2067 }
2068#endif
2069
6224f72b
GS
2070 if (!scriptname)
2071 scriptname = argv[0];
3280af22 2072 if (PL_e_script) {
6224f72b
GS
2073 argc++,argv--;
2074 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2075 }
bd61b366 2076 else if (scriptname == NULL) {
6224f72b
GS
2077#ifdef MSDOS
2078 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2079 moreswitches("h");
6224f72b
GS
2080#endif
2081 scriptname = "-";
2082 }
2083
284167a5 2084 assert (!TAINT_get);
2cace6ac 2085 init_perllib();
6224f72b 2086
a52eba0e 2087 {
f20b2998 2088 bool suidscript = FALSE;
829372d3 2089
8d113837 2090 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2091 if (!rsfp) {
2092 rsfp = PerlIO_stdin();
87606032 2093 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2094 }
6224f72b 2095
b24bc095 2096 validate_suid(rsfp);
6224f72b 2097
64ca3a65 2098#ifndef PERL_MICRO
a52eba0e
NC
2099# if defined(SIGCHLD) || defined(SIGCLD)
2100 {
2101# ifndef SIGCHLD
2102# define SIGCHLD SIGCLD
2103# endif
2104 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2105 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2106 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2107 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2108 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2109 }
0b5b802d 2110 }
a52eba0e 2111# endif
64ca3a65 2112#endif
0b5b802d 2113
737c24fc 2114 if (doextract) {
faef540c 2115
f20b2998 2116 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2117 setuid scripts. */
2118 forbid_setid('x', suidscript);
f20b2998 2119 /* Hence you can't get here if suidscript is true */
faef540c 2120
95670bde
NC
2121 linestr_sv = newSV_type(SVt_PV);
2122 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2123 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2124 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2125 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2126 }
f4c556ac 2127 }
6224f72b 2128
ea726b52 2129 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2130 CvUNIQUE_on(PL_compcv);
2131
dd2155a4 2132 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2133
dd69841b
BB
2134 PL_isarev = newHV();
2135
0c4f7ff0 2136 boot_core_PerlIO();
6224f72b 2137 boot_core_UNIVERSAL();
e1a479c5 2138 boot_core_mro();
4a5df386 2139 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2140
2141 if (xsinit)
acfe0abc 2142 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2143#ifndef PERL_MICRO
739a0b84 2144#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2145 init_os_extras();
6224f72b 2146#endif
64ca3a65 2147#endif
6224f72b 2148
29209bc5 2149#ifdef USE_SOCKS
1b9c9cf5
DH
2150# ifdef HAS_SOCKS5_INIT
2151 socks5_init(argv[0]);
2152# else
29209bc5 2153 SOCKSinit(argv[0]);
1b9c9cf5 2154# endif
ac27b0f5 2155#endif
29209bc5 2156
6224f72b
GS
2157 init_predump_symbols();
2158 /* init_postdump_symbols not currently designed to be called */
2159 /* more than once (ENV isn't cleared first, for example) */
2160 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2161 if (!PL_do_undump)
6224f72b
GS
2162 init_postdump_symbols(argc,argv,env);
2163
27da23d5
JH
2164 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2165 * or explicitly in some platforms.
085a54d9 2166 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2167 * look like the user wants to use UTF-8. */
a0fd4948 2168#if defined(__SYMBIAN32__)
27da23d5
JH
2169 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2170#endif
e27b5b51 2171# ifndef PERL_IS_MINIPERL
06e66572
JH
2172 if (PL_unicode) {
2173 /* Requires init_predump_symbols(). */
a05d7ebb 2174 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2175 IO* io;
2176 PerlIO* fp;
2177 SV* sv;
2178
a05d7ebb 2179 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2180 * and the default open disciplines. */
a05d7ebb
JH
2181 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2182 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2183 (fp = IoIFP(io)))
2184 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2185 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2186 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2187 (fp = IoOFP(io)))
2188 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2189 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2190 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2191 (fp = IoOFP(io)))
2192 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2193 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2194 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2195 SVt_PV)))) {
a05d7ebb
JH
2196 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2197 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2198 if (in) {
2199 if (out)
76f68e9b 2200 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2201 else
76f68e9b 2202 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2203 }
2204 else if (out)
76f68e9b 2205 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2206 SvSETMAGIC(sv);
2207 }
b310b053
JH
2208 }
2209 }
e27b5b51 2210#endif
b310b053 2211
c7030b81
NC
2212 {
2213 const char *s;
4ffa73a3
JH
2214 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2215 if (strEQ(s, "unsafe"))
2216 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2217 else if (strEQ(s, "safe"))
2218 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2219 else
2220 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2221 }
c7030b81 2222 }
4ffa73a3 2223
81d86705 2224#ifdef PERL_MAD
c7030b81
NC
2225 {
2226 const char *s;
284167a5 2227 if (!TAINTING_get &&
2cc12391 2228 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC
2229 PL_madskills = 1;
2230 PL_minus_c = 1;
2231 if (!s || !s[0])
2232 PL_xmlfp = PerlIO_stdout();
2233 else {
2234 PL_xmlfp = PerlIO_open(s, "w");
2235 if (!PL_xmlfp)
2236 Perl_croak(aTHX_ "Can't open %s", s);
2237 }
1a9a51d4 2238 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2239 }
c7030b81
NC
2240 }
2241
2242 {
2243 const char *s;
81d86705
NC
2244 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2245 PL_madskills = atoi(s);
1a9a51d4 2246 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2247 }
c7030b81 2248 }
81d86705
NC
2249#endif
2250
87606032 2251 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2252 SvREFCNT_dec(linestr_sv);
95670bde 2253
219f7226 2254 PL_subname = newSVpvs("main");
6224f72b 2255
5486870f
DM
2256 if (add_read_e_script)
2257 filter_add(read_e_script, NULL);
2258
6224f72b
GS
2259 /* now parse the script */
2260
93189314 2261 SETERRNO(0,SS_NORMAL);
28ac2b49 2262 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2263 if (PL_minus_c)
cea2e8a9 2264 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2265 else {
cea2e8a9 2266 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2267 PL_origfilename);
6224f72b
GS
2268 }
2269 }
57843af0 2270 CopLINE_set(PL_curcop, 0);
03d9f026 2271 SET_CURSTASH(PL_defstash);
3280af22
NIS
2272 if (PL_e_script) {
2273 SvREFCNT_dec(PL_e_script);
a0714e2c 2274 PL_e_script = NULL;
6224f72b
GS
2275 }
2276
3280af22 2277 if (PL_do_undump)
6224f72b
GS
2278 my_unexec();
2279
57843af0
GS
2280 if (isWARN_ONCE) {
2281 SAVECOPFILE(PL_curcop);
2282 SAVECOPLINE(PL_curcop);
3280af22 2283 gv_check(PL_defstash);
57843af0 2284 }
6224f72b
GS
2285
2286 LEAVE;
2287 FREETMPS;
2288
2289#ifdef MYMALLOC
f6a607bc
RGS
2290 {
2291 const char *s;
6224f72b
GS
2292 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2293 dump_mstats("after compilation:");
f6a607bc 2294 }
6224f72b
GS
2295#endif
2296
2297 ENTER;
febb3a6d 2298 PL_restartjmpenv = NULL;
3280af22 2299 PL_restartop = 0;
312caa8e 2300 return NULL;
6224f72b
GS
2301}
2302
954c1994
GS
2303/*
2304=for apidoc perl_run
2305
2306Tells a Perl interpreter to run. See L<perlembed>.
2307
2308=cut
2309*/
2310
6224f72b 2311int
0cb96387 2312perl_run(pTHXx)
6224f72b 2313{
97aff369 2314 dVAR;
6224f72b 2315 I32 oldscope;
14dd3ad8 2316 int ret = 0;
db36c5a1 2317 dJMPENV;
6224f72b 2318
7918f24d
NC
2319 PERL_ARGS_ASSERT_PERL_RUN;
2320#ifndef MULTIPLICITY
ed6c66dd 2321 PERL_UNUSED_ARG(my_perl);
7918f24d 2322#endif
9d4ba2ae 2323
3280af22 2324 oldscope = PL_scopestack_ix;
96e176bf
CL
2325#ifdef VMS
2326 VMSISH_HUSHED = 0;
2327#endif
6224f72b 2328
14dd3ad8 2329 JMPENV_PUSH(ret);
6224f72b
GS
2330 switch (ret) {
2331 case 1:
2332 cxstack_ix = -1; /* start context stack again */
312caa8e 2333 goto redo_body;
14dd3ad8 2334 case 0: /* normal completion */
14dd3ad8
GS
2335 redo_body:
2336 run_body(oldscope);
14dd3ad8
GS
2337 /* FALL THROUGH */
2338 case 2: /* my_exit() */
3280af22 2339 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2340 LEAVE;
2341 FREETMPS;
03d9f026 2342 SET_CURSTASH(PL_defstash);
3a1ee7e8 2343 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2344 PL_endav && !PL_minus_c) {
ca7b837b 2345 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2346 call_list(oldscope, PL_endav);
9ebf26ad 2347 }
6224f72b
GS
2348#ifdef MYMALLOC
2349 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2350 dump_mstats("after execution: ");
2351#endif
37038d91 2352 ret = STATUS_EXIT;
14dd3ad8 2353 break;
6224f72b 2354 case 3:
312caa8e
CS
2355 if (PL_restartop) {
2356 POPSTACK_TO(PL_mainstack);
2357 goto redo_body;
6224f72b 2358 }
5637ef5b 2359 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2360 FREETMPS;
14dd3ad8
GS
2361 ret = 1;
2362 break;
6224f72b
GS
2363 }
2364
14dd3ad8
GS
2365 JMPENV_POP;
2366 return ret;
312caa8e
CS
2367}
2368
dd374669 2369STATIC void
14dd3ad8
GS
2370S_run_body(pTHX_ I32 oldscope)
2371{
97aff369 2372 dVAR;
d3b97530
DM
2373 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2374 PL_sawampersand ? "Enabling" : "Omitting",
2375 (unsigned int)(PL_sawampersand)));
6224f72b 2376
3280af22 2377 if (!PL_restartop) {
81d86705
NC
2378#ifdef PERL_MAD
2379 if (PL_xmlfp) {
2380 xmldump_all();
2381 exit(0); /* less likely to core dump than my_exit(0) */
2382 }
2383#endif
cf2782cd 2384#ifdef DEBUGGING
f0e3f042
CS
2385 if (DEBUG_x_TEST || DEBUG_B_TEST)
2386 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2387 if (!DEBUG_q_TEST)
2388 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2389#endif
6224f72b 2390
3280af22 2391 if (PL_minus_c) {
bf49b057 2392 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2393 my_exit(0);
2394 }
3280af22 2395 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2396 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2397 if (PL_initav) {
ca7b837b 2398 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2399 call_list(oldscope, PL_initav);
9ebf26ad 2400 }
f1fac472 2401#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2402 if (PL_main_root && PL_main_root->op_slabbed)
2403 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2404#endif
6224f72b
GS
2405 }
2406
2407 /* do it */
2408
ca7b837b 2409 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2410
3280af22 2411 if (PL_restartop) {
febb3a6d 2412 PL_restartjmpenv = NULL;
533c011a 2413 PL_op = PL_restartop;
3280af22 2414 PL_restartop = 0;
cea2e8a9 2415 CALLRUNOPS(aTHX);
6224f72b 2416 }
3280af22
NIS
2417 else if (PL_main_start) {
2418 CvDEPTH(PL_main_cv) = 1;
533c011a 2419 PL_op = PL_main_start;
cea2e8a9 2420 CALLRUNOPS(aTHX);
6224f72b 2421 }
f6b3007c 2422 my_exit(0);
118e2215 2423 assert(0); /* NOTREACHED */
6224f72b
GS
2424}
2425
954c1994 2426/*
ccfc67b7
JH
2427=head1 SV Manipulation Functions
2428
954c1994
GS
2429=for apidoc p||get_sv
2430
64ace3f8
NC
2431Returns the SV of the specified Perl scalar. C<flags> are passed to
2432C<gv_fetchpv>. If C<GV_ADD> is set and the
2433Perl variable does not exist then it will be created. If C<flags> is zero
2434and the variable does not exist then NULL is returned.
954c1994
GS
2435
2436=cut
2437*/
2438
6224f72b 2439SV*
64ace3f8 2440Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2441{
2442 GV *gv;
7918f24d
NC
2443
2444 PERL_ARGS_ASSERT_GET_SV;
2445
64ace3f8 2446 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2447 if (gv)
2448 return GvSV(gv);
a0714e2c 2449 return NULL;
6224f72b
GS
2450}
2451
954c1994 2452/*
ccfc67b7
JH
2453=head1 Array Manipulation Functions
2454
954c1994
GS
2455=for apidoc p||get_av
2456
f0b90de1
SF
2457Returns the AV of the specified Perl global or package array with the given
2458name (so it won't work on lexical variables). C<flags> are passed
2459to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2460Perl variable does not exist then it will be created. If C<flags> is zero
2461and the variable does not exist then NULL is returned.
954c1994 2462
f0b90de1
SF
2463Perl equivalent: C<@{"$name"}>.
2464
954c1994
GS
2465=cut
2466*/
2467
6224f72b 2468AV*
cbfd0a87 2469Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2470{
cbfd0a87 2471 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2472
2473 PERL_ARGS_ASSERT_GET_AV;
2474
cbfd0a87 2475 if (flags)
6224f72b
GS
2476 return GvAVn(gv);
2477 if (gv)
2478 return GvAV(gv);
7d49f689 2479 return NULL;
6224f72b
GS
2480}
2481
954c1994 2482/*
ccfc67b7
JH
2483=head1 Hash Manipulation Functions
2484
954c1994
GS
2485=for apidoc p||get_hv
2486
6673a63c
NC
2487Returns the HV of the specified Perl hash. C<flags> are passed to
2488C<gv_fetchpv>. If C<GV_ADD> is set and the
2489Perl variable does not exist then it will be created. If C<flags> is zero
2490and the variable does not exist then NULL is returned.
954c1994
GS
2491
2492=cut
2493*/
2494
6224f72b 2495HV*
6673a63c 2496Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2497{
6673a63c 2498 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2499
2500 PERL_ARGS_ASSERT_GET_HV;
2501
6673a63c 2502 if (flags)
a0d0e21e
LW
2503 return GvHVn(gv);
2504 if (gv)
2505 return GvHV(gv);
5c284bb0 2506 return NULL;
a0d0e21e
LW
2507}
2508
954c1994 2509/*
ccfc67b7
JH
2510=head1 CV Manipulation Functions
2511
780a5241
NC
2512=for apidoc p||get_cvn_flags
2513
2514Returns the CV of the specified Perl subroutine. C<flags> are passed to
2515C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2516exist then it will be declared (which has the same effect as saying
2517C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2518then NULL is returned.
2519
954c1994
GS
2520=for apidoc p||get_cv
2521
780a5241 2522Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2523
2524=cut
2525*/
2526
a0d0e21e 2527CV*
780a5241 2528Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2529{
780a5241 2530 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2531
2532 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2533
334dda80
FC
2534 /* XXX this is probably not what they think they're getting.
2535 * It has the same effect as "sub name;", i.e. just a forward
2536 * declaration! */
780a5241 2537 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2538 return newSTUB(gv,0);
780a5241 2539 }
a0d0e21e 2540 if (gv)
8ebc5c01 2541 return GvCVu(gv);
601f1833 2542 return NULL;
a0d0e21e
LW
2543}
2544
2c67934f
NC
2545/* Nothing in core calls this now, but we can't replace it with a macro and
2546 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2547CV*
2548Perl_get_cv(pTHX_ const char *name, I32 flags)
2549{
7918f24d
NC
2550 PERL_ARGS_ASSERT_GET_CV;
2551
780a5241
NC
2552 return get_cvn_flags(name, strlen(name), flags);
2553}
2554
79072805
LW
2555/* Be sure to refetch the stack pointer after calling these routines. */
2556
954c1994 2557/*
ccfc67b7
JH
2558
2559=head1 Callback Functions
2560
954c1994
GS
2561=for apidoc p||call_argv
2562
f0b90de1
SF
2563Performs a callback to the specified named and package-scoped Perl subroutine
2564with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2565
2566Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2567
2568=cut
2569*/
2570
a0d0e21e 2571I32
5aaab254 2572Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2573
8ac85365
NIS
2574 /* See G_* flags in cop.h */
2575 /* null terminated arg list */
8990e307 2576{
97aff369 2577 dVAR;
a0d0e21e 2578 dSP;
8990e307 2579
7918f24d
NC
2580 PERL_ARGS_ASSERT_CALL_ARGV;
2581
924508f0 2582 PUSHMARK(SP);
a0d0e21e 2583 if (argv) {
8990e307 2584 while (*argv) {
6e449a3a 2585 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2586 argv++;
2587 }
a0d0e21e 2588 PUTBACK;
8990e307 2589 }
864dbfa3 2590 return call_pv(sub_name, flags);
8990e307
LW
2591}
2592
954c1994
GS
2593/*
2594=for apidoc p||call_pv
2595
2596Performs a callback to the specified Perl sub. See L<perlcall>.
2597
2598=cut
2599*/
2600
a0d0e21e 2601I32
864dbfa3 2602Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2603 /* name of the subroutine */
2604 /* See G_* flags in cop.h */
a0d0e21e 2605{
7918f24d
NC
2606 PERL_ARGS_ASSERT_CALL_PV;
2607
0da0e728 2608 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2609}
2610
954c1994
GS
2611/*
2612=for apidoc p||call_method
2613
2614Performs a callback to the specified Perl method. The blessed object must
2615be on the stack. See L<perlcall>.
2616
2617=cut
2618*/
2619
a0d0e21e 2620I32
864dbfa3 2621Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2622 /* name of the subroutine */
2623 /* See G_* flags in cop.h */
a0d0e21e 2624{
46ca9bac 2625 STRLEN len;
7918f24d
NC
2626 PERL_ARGS_ASSERT_CALL_METHOD;
2627
46ca9bac 2628 len = strlen(methname);
2629
2630 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2631 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2632}
2633
2634/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2635/*
2636=for apidoc p||call_sv
2637
2638Performs a callback to the Perl sub whose name is in the SV. See
2639L<perlcall>.
2640
2641=cut
2642*/
2643
a0d0e21e 2644I32
001d637e 2645Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2646 /* See G_* flags in cop.h */
a0d0e21e 2647{
27da23d5 2648 dVAR; dSP;
a0d0e21e 2649 LOGOP myop; /* fake syntax tree node */
968b3946 2650 UNOP method_op;
aa689395 2651 I32 oldmark;
8ea43dc8 2652 VOL I32 retval = 0;
a0d0e21e 2653 I32 oldscope;
54310121 2654 bool oldcatch = CATCH_GET;
6224f72b 2655 int ret;
c4420975 2656 OP* const oldop = PL_op;
db36c5a1 2657 dJMPENV;
1e422769 2658
7918f24d
NC
2659 PERL_ARGS_ASSERT_CALL_SV;
2660
a0d0e21e
LW
2661 if (flags & G_DISCARD) {
2662 ENTER;
2663 SAVETMPS;
2664 }
2f8edad0
NC
2665 if (!(flags & G_WANT)) {
2666 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2667 */
2668 flags |= G_SCALAR;
2669 }
a0d0e21e 2670
aa689395 2671 Zero(&myop, 1, LOGOP);
f51d4af5 2672 if (!(flags & G_NOARGS))
aa689395 2673 myop.op_flags |= OPf_STACKED;
4f911530 2674 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2675 SAVEOP();
533c011a 2676 PL_op = (OP*)&myop;
aa689395 2677
3280af22
NIS
2678 EXTEND(PL_stack_sp, 1);
2679 *++PL_stack_sp = sv;
aa689395 2680 oldmark = TOPMARK;
3280af22 2681 oldscope = PL_scopestack_ix;
a0d0e21e 2682
3280af22 2683 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2684 /* Handle first BEGIN of -d. */
3280af22 2685 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2686 /* Try harder, since this may have been a sighandler, thus
2687 * curstash may be meaningless. */
ea726b52 2688 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2689 && !(flags & G_NODEBUG))
5ff48db8 2690 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2691
968b3946
GS
2692 if (flags & G_METHOD) {
2693 Zero(&method_op, 1, UNOP);
5ff48db8 2694 method_op.op_next = (OP*)&myop;
968b3946 2695 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2696 method_op.op_type = OP_METHOD;
968b3946 2697 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2698 myop.op_type = OP_ENTERSUB;
f39d0b86 2699 PL_op = (OP*)&method_op;
968b3946
GS
2700 }
2701
312caa8e 2702 if (!(flags & G_EVAL)) {
0cdb2077 2703 CATCH_SET(TRUE);
d6f07c05 2704 CALL_BODY_SUB((OP*)&myop);
312caa8e 2705 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2706 CATCH_SET(oldcatch);
312caa8e
CS
2707 }
2708 else {
d78bda3d 2709 myop.op_other = (OP*)&myop;
3280af22 2710 PL_markstack_ptr--;
edb2152a 2711 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2712 PL_markstack_ptr++;
a0d0e21e 2713
14dd3ad8 2714 JMPENV_PUSH(ret);
edb2152a 2715
6224f72b
GS
2716 switch (ret) {
2717 case 0:
14dd3ad8 2718 redo_body:
d6f07c05 2719 CALL_BODY_SUB((OP*)&myop);
312caa8e 2720 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2721 if (!(flags & G_KEEPERR)) {
ab69dbc2 2722 CLEAR_ERRSV();
8433848b 2723 }
a0d0e21e 2724 break;
6224f72b 2725 case 1:
f86702cc 2726 STATUS_ALL_FAILURE;
a0d0e21e 2727 /* FALL THROUGH */
6224f72b 2728 case 2:
a0d0e21e 2729 /* my_exit() was called */
03d9f026 2730 SET_CURSTASH(PL_defstash);
a0d0e21e 2731 FREETMPS;
14dd3ad8 2732 JMPENV_POP;
f86702cc 2733 my_exit_jump();
118e2215 2734 assert(0); /* NOTREACHED */
6224f72b 2735 case 3:
3280af22 2736 if (PL_restartop) {
febb3a6d 2737 PL_restartjmpenv = NULL;
533c011a 2738 PL_op = PL_restartop;
3280af22 2739 PL_restartop = 0;
312caa8e 2740 goto redo_body;
a0d0e21e 2741 }
3280af22 2742 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2743 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2744 retval = 0;
2745 else {
2746 retval = 1;
3280af22 2747 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2748 }
312caa8e 2749 break;
a0d0e21e 2750 }
a0d0e21e 2751
edb2152a
NC
2752 if (PL_scopestack_ix > oldscope)
2753 delete_eval_scope();
14dd3ad8 2754 JMPENV_POP;
a0d0e21e 2755 }
1e422769 2756
a0d0e21e 2757 if (flags & G_DISCARD) {
3280af22 2758 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2759 retval = 0;
2760 FREETMPS;
2761 LEAVE;
2762 }
533c011a 2763 PL_op = oldop;
a0d0e21e
LW
2764 return retval;
2765}
2766
6e72f9df 2767/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2768
954c1994
GS
2769/*
2770=for apidoc p||eval_sv
2771
be064c4a
DM
2772Tells Perl to C<eval> the string in the SV. It supports the same flags
2773as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2774
2775=cut
2776*/
2777
a0d0e21e 2778I32
864dbfa3 2779Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2780
8ac85365 2781 /* See G_* flags in cop.h */
a0d0e21e 2782{
97aff369 2783 dVAR;
924508f0 2784 dSP;
a0d0e21e 2785 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2786 VOL I32 oldmark = SP - PL_stack_base;
2787 VOL I32 retval = 0;
6224f72b 2788 int ret;
c4420975 2789 OP* const oldop = PL_op;
db36c5a1 2790 dJMPENV;
84902520 2791
7918f24d
NC
2792 PERL_ARGS_ASSERT_EVAL_SV;
2793
4633a7c4
LW
2794 if (flags & G_DISCARD) {
2795 ENTER;
2796 SAVETMPS;
2797 }
2798
462e5cf6 2799 SAVEOP();
533c011a 2800 PL_op = (OP*)&myop;
5ff48db8 2801 Zero(&myop, 1, UNOP);
3280af22
NIS
2802 EXTEND(PL_stack_sp, 1);
2803 *++PL_stack_sp = sv;
79072805 2804
4633a7c4
LW
2805 if (!(flags & G_NOARGS))
2806 myop.op_flags = OPf_STACKED;
6e72f9df 2807 myop.op_type = OP_ENTEREVAL;
4f911530 2808 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2809 if (flags & G_KEEPERR)
2810 myop.op_flags |= OPf_SPECIAL;
d24ca0c5
DM
2811 if (PL_reg_state.re_reparsing)
2812 myop.op_private = OPpEVAL_COPHH;
4633a7c4 2813
dedbcade
DM
2814 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2815 * before a PUSHEVAL, which corrupts the stack after a croak */
2816 TAINT_PROPER("eval_sv()");
2817
14dd3ad8 2818 JMPENV_PUSH(ret);
6224f72b
GS
2819 switch (ret) {
2820 case 0:
14dd3ad8 2821 redo_body:
2ba65d5f
DM
2822 if (PL_op == (OP*)(&myop)) {
2823 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2824 if (!PL_op)
2825 goto fail; /* failed in compilation */
2826 }
4aca2f62 2827 CALLRUNOPS(aTHX);
312caa8e 2828 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2829 if (!(flags & G_KEEPERR)) {
ab69dbc2 2830 CLEAR_ERRSV();
8433848b 2831 }
4633a7c4 2832 break;
6224f72b 2833 case 1:
f86702cc 2834 STATUS_ALL_FAILURE;
4633a7c4 2835 /* FALL THROUGH */
6224f72b 2836 case 2:
4633a7c4 2837 /* my_exit() was called */
03d9f026 2838 SET_CURSTASH(PL_defstash);
4633a7c4 2839 FREETMPS;
14dd3ad8 2840 JMPENV_POP;
f86702cc 2841 my_exit_jump();
118e2215 2842 assert(0); /* NOTREACHED */
6224f72b 2843 case 3:
3280af22 2844 if (PL_restartop) {
febb3a6d 2845 PL_restartjmpenv = NULL;
533c011a 2846 PL_op = PL_restartop;
3280af22 2847 PL_restartop = 0;
312caa8e 2848 goto redo_body;
4633a7c4 2849 }
4aca2f62 2850 fail:
3280af22 2851 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2852 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2853 retval = 0;
2854 else {
2855 retval = 1;
3280af22 2856 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2857 }
312caa8e 2858 break;
4633a7c4
LW
2859 }
2860
14dd3ad8 2861 JMPENV_POP;
4633a7c4 2862 if (flags & G_DISCARD) {
3280af22 2863 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2864 retval = 0;
2865 FREETMPS;
2866 LEAVE;
2867 }
533c011a 2868 PL_op = oldop;
4633a7c4
LW
2869 return retval;
2870}
2871
954c1994
GS
2872/*
2873=for apidoc p||eval_pv
2874
2875Tells Perl to C<eval> the given string and return an SV* result.
2876
2877=cut
2878*/
2879
137443ea 2880SV*
864dbfa3 2881Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2882{
97aff369 2883 dVAR;
137443ea
PP
2884 SV* sv = newSVpv(p, 0);
2885
7918f24d
NC
2886 PERL_ARGS_ASSERT_EVAL_PV;
2887
864dbfa3 2888 eval_sv(sv, G_SCALAR);
137443ea
PP
2889 SvREFCNT_dec(sv);
2890
ed1786ad
DD
2891 {
2892 dSP;
2893 sv = POPs;
2894 PUTBACK;
2895 }
137443ea 2896
eed484f9
DD
2897 /* just check empty string or undef? */
2898 if (croak_on_error) {
2899 SV * const errsv = ERRSV;
2900 if(SvTRUE_NN(errsv))
2901 /* replace with croak_sv? */
2902 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2903 }
137443ea
PP
2904
2905 return sv;
2906}
2907
4633a7c4
LW
2908/* Require a module. */
2909
954c1994 2910/*
ccfc67b7
JH
2911=head1 Embedding Functions
2912
954c1994
GS
2913=for apidoc p||require_pv
2914
7d3fb230
BS
2915Tells Perl to C<require> the file named by the string argument. It is
2916analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2917implemented that way; consider using load_module instead.
954c1994 2918
7d3fb230 2919=cut */
954c1994 2920
4633a7c4 2921void
864dbfa3 2922Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2923{
97aff369 2924 dVAR;
d3acc0f7 2925 dSP;
97aff369 2926 SV* sv;
7918f24d
NC
2927
2928 PERL_ARGS_ASSERT_REQUIRE_PV;
2929
e788e7d3 2930 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2931 PUTBACK;
be41e5d9
NC
2932 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2933 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2934 SPAGAIN;
2935 POPSTACK;
79072805
LW
2936}
2937
76e3520e 2938STATIC void
b6f82619 2939S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2940{
ab821d7f 2941 /* This message really ought to be max 23 lines.
75c72d73 2942 * Removed -h because the user already knows that option. Others? */
fb73857a 2943
1566c39d
NC
2944 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2945 minimum of 509 character string literals. */
27da23d5 2946 static const char * const usage_msg[] = {
1566c39d
NC
2947" -0[octal] specify record separator (\\0, if no argument)\n"
2948" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2949" -C[number/list] enables the listed Unicode features\n"
2950" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2951" -d[:debugger] run program under debugger\n"
2952" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2953" -e program one line of program (several -e's allowed, omit programfile)\n"
2954" -E program like -e, but enables all optional features\n"
2955" -f don't do $sitelib/sitecustomize.pl at startup\n"
2956" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2957" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2958" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2959" -l[octal] enable line ending processing, specifies line terminator\n"
2960" -[mM][-]module execute \"use/no module...\" before executing program\n"
2961" -n assume \"while (<>) { ... }\" loop around program\n"
2962" -p assume loop like -n but print line also, like sed\n"
2963" -s enable rudimentary parsing for switches after programfile\n"
2964" -S look for programfile using PATH environment variable\n",
2965" -t enable tainting warnings\n"
2966" -T enable tainting checks\n"
2967" -u dump core after parsing program\n"
2968" -U allow unsafe operations\n"
2969" -v print version, patchlevel and license\n"
2970" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2971" -w enable many useful warnings\n"
1566c39d
NC
2972" -W enable all warnings\n"
2973" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2974" -X disable all warnings\n"
2975" \n"
2976"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2977NULL
2978};
27da23d5 2979 const char * const *p = usage_msg;
1566c39d 2980 PerlIO *out = PerlIO_stdout();
fb73857a 2981
1566c39d
NC
2982 PerlIO_printf(out,
2983 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2984 PL_origargv[0]);
fb73857a 2985 while (*p)
1566c39d 2986 PerlIO_puts(out, *p++);
b6f82619 2987 my_exit(0);
4633a7c4
LW
2988}
2989
b4ab917c
DM
2990/* convert a string of -D options (or digits) into an int.
2991 * sets *s to point to the char after the options */
2992
2993#ifdef DEBUGGING
2994int
e1ec3a88 2995Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2996{
27da23d5 2997 static const char * const usage_msgd[] = {
651b8f1a
NC
2998 " Debugging flag values: (see also -d)\n"
2999 " p Tokenizing and parsing (with v, displays parse stack)\n"
3000 " s Stack snapshots (with v, displays all stacks)\n"
3001 " l Context (loop) stack processing\n"
3002 " t Trace execution\n"
3003 " o Method and overloading resolution\n",
3004 " c String/numeric conversions\n"
3005 " P Print profiling info, source file input state\n"
3006 " m Memory and SV allocation\n"
3007 " f Format processing\n"
3008 " r Regular expression parsing and execution\n"
3009 " x Syntax tree dump\n",
3010 " u Tainting checks\n"
3011 " H Hash dump -- usurps values()\n"
3012 " X Scratchpad allocation\n"
3013 " D Cleaning up\n"
56967202 3014 " S Op slab allocation\n"
651b8f1a
NC
3015 " T Tokenising\n"
3016 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3017 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3018 " v Verbose: use in conjunction with other flags\n"
3019 " C Copy On Write\n"
3020 " A Consistency checks on internal structures\n"
3021 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3022 " M trace smart match resolution\n"
3023 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3024 NULL
3025 };
b4ab917c 3026 int i = 0;
7918f24d
NC
3027
3028 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3029
b4ab917c
DM
3030 if (isALPHA(**s)) {
3031 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3032 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c 3033
0eb30aeb 3034 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3035 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3036 if (d)
3037 i |= 1 << (d - debopts);
3038 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3039 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3040 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3041 }
3042 }
e6e64d9b 3043 else if (isDIGIT(**s)) {
b4ab917c 3044 i = atoi(*s);
0eb30aeb 3045 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3046 }
ddcf8bc1 3047 else if (givehelp) {
06e869a4 3048 const char *const *p = usage_msgd;
651b8f1a 3049 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3050 }
b4ab917c
DM
3051# ifdef EBCDIC
3052 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3053 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3054 "-Dp not implemented on this platform\n");
3055# endif
3056 return i;
3057}
3058#endif
3059
79072805
LW
3060/* This routine handles any switches that can be given during run */
3061
c7030b81
NC
3062const char *
3063Perl_moreswitches(pTHX_ const char *s)
79072805 3064{
27da23d5 3065 dVAR;
84c133a0 3066 UV rschar;
0544e6df 3067 const char option = *s; /* used to remember option in -m/-M code */
79072805 3068
7918f24d
NC
3069 PERL_ARGS_ASSERT_MORESWITCHES;
3070
79072805
LW
3071 switch (*s) {
3072 case '0':
a863c7d1 3073 {
f2095865 3074 I32 flags = 0;
a3b680e6 3075 STRLEN numlen;
f2095865
JH
3076
3077 SvREFCNT_dec(PL_rs);
3078 if (s[1] == 'x' && s[2]) {
a3b680e6 3079 const char *e = s+=2;
f2095865
JH
3080 U8 *tmps;
3081
a3b680e6
AL
3082 while (*e)
3083 e++;
f2095865
JH
3084 numlen = e - s;
3085 flags = PERL_SCAN_SILENT_ILLDIGIT;
3086 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3087 if (s + numlen < e) {
3088 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3089 numlen = 0;
3090 s--;
3091 }
396482e1 3092 PL_rs = newSVpvs("");
c5661c80 3093 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3094 tmps = (U8*)SvPVX(PL_rs);
3095 uvchr_to_utf8(tmps, rschar);
3096 SvCUR_set(PL_rs, UNISKIP(rschar));
3097 SvUTF8_on(PL_rs);
3098 }
3099 else {
3100 numlen = 4;
3101 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3102 if (rschar & ~((U8)~0))
3103 PL_rs = &PL_sv_undef;
3104 else if (!rschar && numlen >= 2)
396482e1 3105 PL_rs = newSVpvs("");
f2095865
JH
3106 else {
3107 char ch = (char)rschar;
3108 PL_rs = newSVpvn(&ch, 1);
3109 }
3110 }
64ace3f8 3111 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3112 return s + numlen;
a863c7d1 3113 }
46487f74 3114 case 'C':
a05d7ebb 3115 s++;
dd374669 3116 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3117 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3118 PL_utf8cache = -1;
46487f74 3119 return s;
2304df62 3120 case 'F':
3280af22 3121 PL_minus_F = TRUE;
ebce5377
RGS
3122 PL_splitstr = ++s;
3123 while (*s && !isSPACE(*s)) ++s;
e49e380e 3124 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3125 return s;
79072805 3126 case 'a':
3280af22 3127 PL_minus_a = TRUE;
79072805
LW
3128 s++;
3129 return s;
3130 case 'c':
3280af22 3131 PL_minus_c = TRUE;
79072805
LW
3132 s++;
3133 return s;
3134 case 'd':
f20b2998 3135 forbid_setid('d', FALSE);
4633a7c4 3136 s++;
2cbb2ee1
RGS
3137
3138 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3139 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3140 ++s;
3141 my_setenv("PERL5DB_THREADED", "1");
3142 }
3143
70c94a19
RR
3144 /* The following permits -d:Mod to accepts arguments following an =
3145 in the fashion that -MSome::Mod does. */
3146 if (*s == ':' || *s == '=') {
b19934fb
NC
3147 const char *start;
3148 const char *end;
3149 SV *sv;
3150
3151 if (*++s == '-') {
3152 ++s;
3153 sv = newSVpvs("no Devel::");
3154 } else {
3155 sv = newSVpvs("use Devel::");
3156 }
3157
3158 start = s;
3159 end = s + strlen(s);
f85893a1 3160
b19934fb 3161 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3162 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3163 if (*s != '=')
f85893a1 3164 sv_catpvn(sv, start, end - start);
70c94a19
RR
3165 else {
3166 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3167 /* Don't use NUL as q// delimiter here, this string goes in the
3168 * environment. */
3169 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3170 }
f85893a1 3171 s = end;
184f32ec 3172 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3173 SvREFCNT_dec(sv);
4633a7c4 3174 }
ed094faf 3175 if (!PL_perldb) {
3280af22 3176 PL_perldb = PERLDB_ALL;
a0d0e21e 3177 init_debugger();
ed094faf 3178 }
79072805
LW
3179 return s;
3180 case 'D':
0453d815 3181 {
79072805 3182#ifdef DEBUGGING
f20b2998 3183 forbid_setid('D', FALSE);
b4ab917c 3184 s++;
dd374669 3185 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3186#else /* !DEBUGGING */
0453d815 3187 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3188 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3189 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3190 for (s++; isWORDCHAR(*s); s++) ;
79072805 3191#endif
79072805 3192 return s;
0453d815 3193 }
4633a7c4 3194 case 'h':
b6f82619 3195 usage();
79072805 3196 case 'i':
43c5f42d 3197 Safefree(PL_inplace);
c030f24b
GH
3198#if defined(__CYGWIN__) /* do backup extension automagically */
3199 if (*(s+1) == '\0') {
c86a4f2e 3200 PL_inplace = savepvs(".bak");
c030f24b
GH
3201 return s+1;
3202 }
3203#endif /* __CYGWIN__ */
5ef5d758 3204 {
d4c19fe8 3205 const char * const start = ++s;
5ef5d758
NC
3206 while (*s && !isSPACE(*s))
3207 ++s;
3208
3209 PL_inplace = savepvn(start, s - start);
3210 }
7b8d334a 3211 if (*s) {
5ef5d758 3212 ++s;
7b8d334a 3213 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3214 s++;
7b8d334a 3215 }
fb73857a 3216 return s;
4e49a025 3217 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3218 forbid_setid('I', FALSE);
fb73857a
PP
3219 ++s;
3220 while (*s && isSPACE(*s))
3221 ++s;
3222 if (*s) {
c7030b81 3223 const char *e, *p;
0df16ed7
GS
3224 p = s;
3225 /* ignore trailing spaces (possibly followed by other switches) */
3226 do {
3227 for (e = p; *e && !isSPACE(*e); e++) ;
3228 p = e;
3229 while (isSPACE(*p))
3230 p++;
3231 } while (*p && *p != '-');
55b4bc1c 3232 incpush(s, e-s,
e28f3139 3233 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3234 s = p;
3235 if (*s == '-')
3236 s++;
79072805
LW
3237 }
3238 else
a67e862a 3239 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3240 return s;
79072805 3241 case 'l':
3280af22 3242 PL_minus_l = TRUE;
79072805 3243 s++;
7889fe52
NIS
3244 if (PL_ors_sv) {
3245 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3246 PL_ors_sv = NULL;
7889fe52 3247 }
79072805 3248 if (isDIGIT(*s)) {
53305cf1 3249 I32 flags = 0;
a3b680e6 3250 STRLEN numlen;
396482e1 3251 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3252 numlen = 3 + (*s == '0');
3253 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3254 s += numlen;
3255 }
3256 else {
8bfdd7d9 3257 if (RsPARA(PL_rs)) {
396482e1 3258 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3259 }
3260 else {
8bfdd7d9 3261 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3262 }
79072805
LW
3263 }
3264 return s;
1a30305b 3265 case 'M':
f20b2998 3266 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3267 /* FALL THROUGH */
3268 case 'm':
f20b2998 3269 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3270 if (*++s) {
c7030b81 3271 const char *start;
b64cb68c 3272 const char *end;
11343788 3273 SV *sv;
e1ec3a88 3274 const char *use = "use ";
0544e6df 3275 bool colon = FALSE;
a5f75d66 3276 /* -M-foo == 'no foo' */
d0043bd1
NC
3277 /* Leading space on " no " is deliberate, to make both
3278 possibilities the same length. */
3279 if (*s == '-') { use = " no "; ++s; }
3280 sv = newSVpvn(use,4);
a5f75d66 3281 start = s;
1a30305b 3282 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3283 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3284 if( *s++ == ':' ) {
3285 if( *s == ':' )
3286 s++;
3287 else
3288 colon = TRUE;
3289 }
3290 }
3291 if (s == start)
3292 Perl_croak(aTHX_ "Module name required with -%c option",
3293 option);
3294 if (colon)
3295 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3296 "contains single ':'",
63da6837 3297 (int)(s - start), start, option);
b64cb68c 3298 end = s + strlen(s);
c07a80fd 3299 if (*s != '=') {
b64cb68c 3300 sv_catpvn(sv, start, end - start);
0544e6df 3301 if (option == 'm') {
c07a80fd 3302 if (*s != '\0')
cea2e8a9 3303 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3304 sv_catpvs( sv, " ()");
c07a80fd
PP
3305 }
3306 } else {
11343788 3307 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3308 /* Use NUL as q''-delimiter. */
3309 sv_catpvs(sv, " split(/,/,q\0");
3310 ++s;
3311 sv_catpvn(sv, s, end - s);
396482e1 3312 sv_catpvs(sv, "\0)");
c07a80fd 3313 }
b64cb68c 3314 s = end;
29a861e7 3315 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3316 }
3317 else
0544e6df 3318 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3319 return s;
79072805 3320 case 'n':
3280af22 3321 PL_minus_n = TRUE;
79072805
LW
3322 s++;
3323 return s;
3324 case 'p':
3280af22 3325 PL_minus_p = TRUE;
79072805
LW
3326 s++;
3327 return s;
3328 case 's':
f20b2998 3329 forbid_setid('s', FALSE);
3280af22 3330 PL_doswitches = TRUE;
79072805
LW
3331 s++;
3332 return s;
6537fe72 3333 case 't':
27a6968b 3334 case 'T':
284167a5
SM
3335#if SILENT_NO_TAINT_SUPPORT
3336 /* silently ignore */
3337#elif NO_TAINT_SUPPORT
3338 Perl_croak("This perl was compiled without taint support. "
3339 "Cowardly refusing to run with -t or -T flags");
3340#else
3341 if (!TAINTING_get)
27a6968b 3342 TOO_LATE_FOR(*s);
284167a5 3343#endif
6537fe72 3344 s++;
463ee0b2 3345 return s;
79072805 3346 case 'u':
3280af22 3347 PL_do_undump = TRUE;
79072805
LW
3348 s++;
3349 return s;
3350 case 'U':
3280af22 3351 PL_unsafe = TRUE;
79072805
LW
3352 s++;
3353 return s;
3354 case 'v':
c4bc78d9
NC
3355 minus_v();
3356 case 'w':
3357 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3358 PL_dowarn |= G_WARN_ON;
3359 }
3360 s++;
3361 return s;
3362 case 'W':
3363 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3364 if (!specialWARN(PL_compiling.cop_warnings))
3365 PerlMemShared_free(PL_compiling.cop_warnings);
3366 PL_compiling.cop_warnings = pWARN_ALL ;
3367 s++;
3368 return s;
3369 case 'X':
3370 PL_dowarn = G_WARN_ALL_OFF;
3371 if (!specialWARN(PL_compiling.cop_warnings))
3372 PerlMemShared_free(PL_compiling.cop_warnings);
3373 PL_compiling.cop_warnings = pWARN_NONE ;
3374 s++;
3375 return s;
3376 case '*':
3377 case ' ':
3378 while( *s == ' ' )
3379 ++s;
3380 if (s[0] == '-') /* Additional switches on #! line. */
3381 return s+1;
3382 break;
3383 case '-':
3384 case 0:
3385#if defined(WIN32) || !defined(PERL_STRICT_CR)
3386 case '\r':
3387#endif
3388 case '\n':
3389 case '\t':
3390 break;
3391#ifdef ALTERNATE_SHEBANG
3392 case 'S': /* OS/2 needs -S on "extproc" line. */
3393 break;
3394#endif
4bb78d63
CB
3395 case 'e': case 'f': case 'x': case 'E':
3396#ifndef ALTERNATE_SHEBANG
3397 case 'S':
3398#endif
3399 case 'V':
c4bc78d9 3400 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3401 default:
3402 Perl_croak(aTHX_
3403 "Unrecognized switch: -%.1s (-h will show valid options)",s
3404 );
c4bc78d9
NC
3405 }
3406 return NULL;
3407}
3408
3409
3410STATIC void
3411S_minus_v(pTHX)
3412{
fc3381af 3413 PerlIO * PIO_stdout;
d7aa5382 3414 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3415 upg_version(PL_patchlevel, TRUE);
8e9464f1 3416#if !defined(DGUX)
46807d8e
YO
3417 {
3418 SV* level= vstringify(PL_patchlevel);
3419#ifdef PERL_PATCHNUM
23d483e2
NC
3420# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3421 SV *num = newSVpvs(PERL_PATCHNUM "*");
3422# else
3423 SV *num = newSVpvs(PERL_PATCHNUM);
3424# endif
fc3381af
DD
3425 {
3426 STRLEN level_len, num_len;
3427 char * level_str, * num_str;
3428 num_str = SvPV(num, num_len);
3429 level_str = SvPV(level, level_len);
3430 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3431 SvREFCNT_dec(level);
3432 level= num;
3433 } else {
3434 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3435 SvREFCNT_dec(num);
3436 }
46807d8e
YO
3437 }
3438 #endif
fc3381af
DD
3439 PIO_stdout = PerlIO_stdout();
3440 PerlIO_printf(PIO_stdout,
ded326e4
DG
3441 "\nThis is perl " STRINGIFY(PERL_REVISION)
3442 ", version " STRINGIFY(PERL_VERSION)
3443 ", subversion " STRINGIFY(PERL_SUBVERSION)
3444 " (%"SVf") built for " ARCHNAME, level
3445 );
46807d8e
YO
3446 SvREFCNT_dec(level);
3447 }
8e9464f1 3448#else /* DGUX */
fc3381af 3449 PIO_stdout = PerlIO_stdout();
8e9464f1 3450/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
fc3381af 3451 PerlIO_printf(PIO_stdout,
52ea0aec 3452 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3453 SVfARG(vstringify(PL_patchlevel))));
fc3381af 3454 PerlIO_printf(PIO_stdout,
8e9464f1
JH
3455 Perl_form(aTHX_ " built under %s at %s %s\n",
3456 OSNAME, __DATE__, __TIME__));
fc3381af 3457 PerlIO_printf(PIO_stdout,
8e9464f1 3458 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3459 OSVERS));
8e9464f1 3460#endif /* !DGUX */
fb73857a
PP
3461#if defined(LOCAL_PATCH_COUNT)
3462 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3463 PerlIO_printf(PIO_stdout,
b0e47665
GS
3464 "\n(with %d registered patch%s, "
3465 "see perl -V for more detail)",
bb7a0f54 3466 LOCAL_PATCH_COUNT,
b0e47665 3467 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3468#endif
1a30305b 3469
fc3381af 3470 PerlIO_printf(PIO_stdout,
d907e2e9 3471 "\n\nCopyright 1987-2013, Larry Wall\n");
79072805 3472#ifdef MSDOS
fc3381af 3473 PerlIO_printf(PIO_stdout,
b0e47665 3474 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3475#endif
3476#ifdef DJGPP
fc3381af 3477 PerlIO_printf(PIO_stdout,
b0e47665
GS
3478 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3479 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3480#endif
79072805 3481#ifdef OS2
fc3381af 3482 PerlIO_printf(PIO_stdout,
b0e47665 3483 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3484 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3485#endif
9d116dd7 3486#ifdef OEMVS
fc3381af 3487 PerlIO_printf(PIO_stdout,
b0e47665 3488 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3489#endif
495c5fdc 3490#ifdef __VOS__
fc3381af 3491 PerlIO_printf(PIO_stdout,
c0fcb8c5 3492 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
495c5fdc 3493#endif
a1a0e61e 3494#ifdef POSIX_BC
fc3381af 3495 PerlIO_printf(PIO_stdout,
b0e47665 3496 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3497#endif
e1caacb4 3498#ifdef UNDER_CE
fc3381af
DD
3499 PerlIO_printf(PIO_stdout,
3500 "WINCE port by Rainer Keuchel, 2001-2002\n"
3501 "Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3502 wce_hitreturn();
3503#endif
a0fd4948 3504#ifdef __SYMBIAN32__
fc3381af 3505 PerlIO_printf(PIO_stdout,
27da23d5
JH
3506 "Symbian port by Nokia, 2004-2005\n");
3507#endif
baed7233
DL
3508#ifdef BINARY_BUILD_NOTICE
3509 BINARY_BUILD_NOTICE;
3510#endif
fc3381af 3511 PerlIO_printf(PIO_stdout,
b0e47665 3512 "\n\
79072805 3513Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3514GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3515Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3516this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\