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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
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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 *
7766f137
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158perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
159 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
160 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
161 struct IPerlDir* ipD, struct IPerlSock* ipS,
162 struct IPerlProc* ipP)
163{
164 PerlInterpreter *my_perl;
7918f24d
NC
165
166 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
167
9f653bb5 168 /* Newx() needs interpreter, so call malloc() instead */
32e30700 169 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 170 S_init_tls_and_interp(my_perl);
32e30700
GS
171 Zero(my_perl, 1, PerlInterpreter);
172 PL_Mem = ipM;
7766f137
GS
173 PL_MemShared = ipMS;
174 PL_MemParse = ipMP;
32e30700
GS
175 PL_Env = ipE;
176 PL_StdIO = ipStd;
177 PL_LIO = ipLIO;
178 PL_Dir = ipD;
179 PL_Sock = ipS;
180 PL_Proc = ipP;
7cb608b5 181 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 182
32e30700
GS
183 return my_perl;
184}
185#else
954c1994
GS
186
187/*
ccfc67b7
JH
188=head1 Embedding Functions
189
954c1994
GS
190=for apidoc perl_alloc
191
192Allocates a new Perl interpreter. See L<perlembed>.
193
194=cut
195*/
196
93a17b20 197PerlInterpreter *
cea2e8a9 198perl_alloc(void)
79072805 199{
cea2e8a9 200 PerlInterpreter *my_perl;
79072805 201
9f653bb5 202 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 203 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 204
e6827a76 205 S_init_tls_and_interp(my_perl);
7cb608b5 206#ifndef PERL_TRACK_MEMPOOL
07409e01 207 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
208#else
209 Zero(my_perl, 1, PerlInterpreter);
210 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
211 return my_perl;
212#endif
79072805 213}
32e30700 214#endif /* PERL_IMPLICIT_SYS */
79072805 215
954c1994
GS
216/*
217=for apidoc perl_construct
218
219Initializes a new Perl interpreter. See L<perlembed>.
220
221=cut
222*/
223
79072805 224void
0cb96387 225perl_construct(pTHXx)
79072805 226{
27da23d5 227 dVAR;
7918f24d
NC
228
229 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
230
8990e307 231#ifdef MULTIPLICITY
54aff467 232 init_interp();
ac27b0f5 233 PL_perl_destruct_level = 1;
54aff467 234#else
7918f24d 235 PERL_UNUSED_ARG(my_perl);
54aff467
GS
236 if (PL_perl_destruct_level > 0)
237 init_interp();
238#endif
34caed6d
DM
239 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
240
0d96b528 241 init_constants();
34caed6d
DM
242
243 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 244 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
245
246 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 247#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 248 PL_pidstatus = newHV();
ca0c25f6 249#endif
79072805 250
396482e1 251 PL_rs = newSVpvs("\n");
dc92893f 252
cea2e8a9 253 init_stacks();
79072805 254
748a9306 255 init_ids();
a5f75d66 256
312caa8e 257 JMPENV_BOOTSTRAP;
f86702cc
PP
258 STATUS_ALL_SUCCESS;
259
0672f40e 260 init_i18nl10n(1);
36477c24 261 SET_NUMERIC_STANDARD();
0b5b802d 262
ab821d7f 263#if defined(LOCAL_PATCH_COUNT)
3280af22 264 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
265#endif
266
52853b95
GS
267#ifdef HAVE_INTERP_INTERN
268 sys_intern_init();
269#endif
270
3a1ee7e8 271 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 272
3280af22
NIS
273 PL_fdpid = newAV(); /* for remembering popen pids by fd */
274 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 275 PL_errors = newSVpvs("");
76f68e9b
MHM
276 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
277 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
278 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 279#ifdef USE_ITHREADS
402d2eb1
NC
280 /* First entry is a list of empty elements. It needs to be initialised
281 else all hell breaks loose in S_find_uninit_var(). */
282 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 283 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 284 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 285#endif
e5dd39fc 286#ifdef USE_REENTRANT_API
59bd0823 287 Perl_reentrant_init(aTHX);
e5dd39fc 288#endif
7dc86639
YO
289#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
290 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
291 * This MUST be done before any hash stores or fetches take place.
292 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
293 * yourself, it is your responsibility to provide a good random seed!
294 * You can also define PERL_HASH_SEED in compile time, see hv.h.
295 *
296 * XXX: fix this comment */
297 if (PL_hash_seed_set == FALSE) {
298 Perl_get_hash_seed(aTHX_ PL_hash_seed);
299 PL_hash_seed_set= TRUE;
300 }
301#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
302
303 /* Note that strtab is a rather special HV. Assumptions are made
304 about not iterating on it, and not adding tie magic to it.
305 It is properly deallocated in perl_destruct() */
306 PL_strtab = newHV();
307
3d47000e
AB
308 HvSHAREKEYS_off(PL_strtab); /* mandatory */
309 hv_ksplit(PL_strtab, 512);
310
0631ea03
AB
311#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
312 _dyld_lookup_and_bind
313 ("__environ", (unsigned long *) &environ_pointer, NULL);
314#endif /* environ */
315
2f42fcb0
JH
316#ifndef PERL_MICRO
317# ifdef USE_ENVIRON_ARRAY
0631ea03 318 PL_origenviron = environ;
2f42fcb0 319# endif
0631ea03
AB
320#endif
321
5311654c 322 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 323 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
324 * The HZ if not originally defined has been by now
325 * been defined as CLK_TCK, if available. */
b6c36746 326#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
327 PL_clocktick = sysconf(_SC_CLK_TCK);
328 if (PL_clocktick <= 0)
329#endif
330 PL_clocktick = HZ;
331
081fc587
AB
332 PL_stashcache = newHV();
333
e8e3635e 334 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 335 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 336
27da23d5
JH
337#ifdef HAS_MMAP
338 if (!PL_mmap_page_size) {
339#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
340 {
341 SETERRNO(0, SS_NORMAL);
342# ifdef _SC_PAGESIZE
343 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
344# else
345 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
346# endif
347 if ((long) PL_mmap_page_size < 0) {
348 if (errno) {
44f8325f 349 SV * const error = ERRSV;
d4c19fe8 350 SvUPGRADE(error, SVt_PV);
0510663f 351 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
352 }
353 else
354 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
355 }
356 }
357#else
358# ifdef HAS_GETPAGESIZE
359 PL_mmap_page_size = getpagesize();
360# else
361# if defined(I_SYS_PARAM) && defined(PAGESIZE)
362 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
363# endif
364# endif
365#endif
366 if (PL_mmap_page_size <= 0)
367 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
368 (IV) PL_mmap_page_size);
369 }
370#endif /* HAS_MMAP */
371
372#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
373 PL_timesbase.tms_utime = 0;
374 PL_timesbase.tms_stime = 0;
375 PL_timesbase.tms_cutime = 0;
376 PL_timesbase.tms_cstime = 0;
377#endif
378
7d113631
NC
379 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
380
a3e6e81e 381 PL_registered_mros = newHV();
9e169432
NC
382 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
383 HvMAX(PL_registered_mros) = 0;
a3e6e81e 384
8990e307 385 ENTER;
79072805
LW
386}
387
954c1994 388/*
62375a60
NIS
389=for apidoc nothreadhook
390
391Stub that provides thread hook for perl_destruct when there are
392no threads.
393
394=cut
395*/
396
397int
4e9e3734 398Perl_nothreadhook(pTHX)
62375a60 399{
96a5add6 400 PERL_UNUSED_CONTEXT;
62375a60
NIS
401 return 0;
402}
403
41e4abd8
NC
404#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
405void
406Perl_dump_sv_child(pTHX_ SV *sv)
407{
408 ssize_t got;
bf357333
NC
409 const int sock = PL_dumper_fd;
410 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
411 union control_un control;
412 struct msghdr msg;
808ad2d0 413 struct iovec vec[2];
bf357333 414 struct cmsghdr *cmptr;
808ad2d0
NC
415 int returned_errno;
416 unsigned char buffer[256];
41e4abd8 417
7918f24d
NC
418 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
419
bf357333 420 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
421 return;
422
423 PerlIO_flush(Perl_debug_log);
424
bf357333
NC
425 /* All these shenanigans are to pass a file descriptor over to our child for
426 it to dump out to. We can't let it hold open the file descriptor when it
427 forks, as the file descriptor it will dump to can turn out to be one end
428 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 429 be open, the wait would be forever.) */
bf357333
NC
430
431 msg.msg_control = control.control;
432 msg.msg_controllen = sizeof(control.control);
433 /* We're a connected socket so we don't need a destination */
434 msg.msg_name = NULL;
435 msg.msg_namelen = 0;
436 msg.msg_iov = vec;
808ad2d0 437 msg.msg_iovlen = 1;
bf357333
NC
438
439 cmptr = CMSG_FIRSTHDR(&msg);
440 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
441 cmptr->cmsg_level = SOL_SOCKET;
442 cmptr->cmsg_type = SCM_RIGHTS;
443 *((int *)CMSG_DATA(cmptr)) = 1;
444
445 vec[0].iov_base = (void*)&sv;
446 vec[0].iov_len = sizeof(sv);
447 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
448
449 if(got < 0) {
bf357333 450 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
451 abort();
452 }
bf357333
NC
453 if(got < sizeof(sv)) {
454 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
455 abort();
456 }
457
808ad2d0
NC
458 /* Return protocol is
459 int: errno value
460 unsigned char: length of location string (0 for empty)
461 unsigned char*: string (not terminated)
462 */
463 vec[0].iov_base = (void*)&returned_errno;
464 vec[0].iov_len = sizeof(returned_errno);
465 vec[1].iov_base = buffer;
466 vec[1].iov_len = 1;
467
468 got = readv(sock, vec, 2);
41e4abd8
NC
469
470 if(got < 0) {
471 perror("Debug leaking scalars parent read failed");
808ad2d0 472 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
473 abort();
474 }
808ad2d0 475 if(got < sizeof(returned_errno) + 1) {
41e4abd8 476 perror("Debug leaking scalars parent short read");
808ad2d0 477 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
478 abort();
479 }
480
808ad2d0
NC
481 if (*buffer) {
482 got = read(sock, buffer + 1, *buffer);
483 if(got < 0) {
484 perror("Debug leaking scalars parent read 2 failed");
485 PerlIO_flush(PerlIO_stderr());
486 abort();
487 }
488
489 if(got < *buffer) {
490 perror("Debug leaking scalars parent short read 2");
491 PerlIO_flush(PerlIO_stderr());
492 abort();
493 }
494 }
495
496 if (returned_errno || *buffer) {
497 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
498 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
499 returned_errno, strerror(returned_errno));
41e4abd8
NC
500 }
501}
502#endif
503
62375a60 504/*
954c1994
GS
505=for apidoc perl_destruct
506
507Shuts down a Perl interpreter. See L<perlembed>.
508
509=cut
510*/
511
31d77e54 512int
0cb96387 513perl_destruct(pTHXx)
79072805 514{
27da23d5 515 dVAR;
be2ea8ed 516 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 517 HV *hv;
2aa47728 518#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
519 pid_t child;
520#endif
9c0b6888 521 int i;
8990e307 522
7918f24d
NC
523 PERL_ARGS_ASSERT_PERL_DESTRUCT;
524#ifndef MULTIPLICITY
ed6c66dd 525 PERL_UNUSED_ARG(my_perl);
7918f24d 526#endif
9d4ba2ae 527
3d22c4f0
GG
528 assert(PL_scopestack_ix == 1);
529
7766f137
GS
530 /* wait for all pseudo-forked children to finish */
531 PERL_WAIT_FOR_CHILDREN;
532
3280af22 533 destruct_level = PL_perl_destruct_level;
36e77d41 534#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 535 {
9d4ba2ae
AL
536 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
537 if (s) {
36e77d41
DD
538 const int i = atoi(s);
539#ifdef DEBUGGING
540 if (destruct_level < i) destruct_level = i;
541#endif
542#ifdef PERL_TRACK_MEMPOOL
543 /* RT #114496, for perl_free */
544 PL_perl_destruct_level = i;
545#endif
5f05dabc 546 }
4633a7c4
LW
547 }
548#endif
549
27da23d5 550 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
551 dJMPENV;
552 int x = 0;
553
554 JMPENV_PUSH(x);
1b6737cc 555 PERL_UNUSED_VAR(x);
9ebf26ad 556 if (PL_endav && !PL_minus_c) {
ca7b837b 557 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 558 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 559 }
f3faeb53 560 JMPENV_POP;
26f423df 561 }
f3faeb53 562 LEAVE;
a0d0e21e 563 FREETMPS;
3d22c4f0 564 assert(PL_scopestack_ix == 0);
a0d0e21e 565
e00b64d4 566 /* Need to flush since END blocks can produce output */
f13a2bc0 567 my_fflush_all();
e00b64d4 568
16c91539 569 if (PL_threadhook(aTHX)) {
62375a60 570 /* Threads hook has vetoed further cleanup */
c301d606 571 PL_veto_cleanup = TRUE;
37038d91 572 return STATUS_EXIT;
62375a60
NIS
573 }
574
2aa47728
NC
575#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
576 if (destruct_level != 0) {
577 /* Fork here to create a child. Our child's job is to preserve the
578 state of scalars prior to destruction, so that we can instruct it
579 to dump any scalars that we later find have leaked.
580 There's no subtlety in this code - it assumes POSIX, and it doesn't
581 fail gracefully */
582 int fd[2];
583
584 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
585 perror("Debug leaking scalars socketpair failed");
586 abort();
587 }
588
589 child = fork();
590 if(child == -1) {
591 perror("Debug leaking scalars fork failed");
592 abort();
593 }
594 if (!child) {
595 /* We are the child */
3125a5a4
NC
596 const int sock = fd[1];
597 const int debug_fd = PerlIO_fileno(Perl_debug_log);
598 int f;
808ad2d0
NC
599 const char *where;
600 /* Our success message is an integer 0, and a char 0 */
b61433a9 601 static const char success[sizeof(int) + 1] = {0};
3125a5a4 602
2aa47728 603 close(fd[0]);
2aa47728 604
3125a5a4
NC
605 /* We need to close all other file descriptors otherwise we end up
606 with interesting hangs, where the parent closes its end of a
607 pipe, and sits waiting for (another) child to terminate. Only
608 that child never terminates, because it never gets EOF, because
bf357333
NC
609 we also have the far end of the pipe open. We even need to
610 close the debugging fd, because sometimes it happens to be one
611 end of a pipe, and a process is waiting on the other end for
612 EOF. Normally it would be closed at some point earlier in
613 destruction, but if we happen to cause the pipe to remain open,
614 EOF never occurs, and we get an infinite hang. Hence all the
615 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
616
617 f = sysconf(_SC_OPEN_MAX);
618 if(f < 0) {
808ad2d0
NC
619 where = "sysconf failed";
620 goto abort;
3125a5a4
NC
621 }
622 while (f--) {
623 if (f == sock)
624 continue;
3125a5a4
NC
625 close(f);
626 }
627
2aa47728
NC
628 while (1) {
629 SV *target;
bf357333
NC
630 union control_un control;
631 struct msghdr msg;
632 struct iovec vec[1];
633 struct cmsghdr *cmptr;
634 ssize_t got;
635 int got_fd;
636
637 msg.msg_control = control.control;
638 msg.msg_controllen = sizeof(control.control);
639 /* We're a connected socket so we don't need a source */
640 msg.msg_name = NULL;
641 msg.msg_namelen = 0;
642 msg.msg_iov = vec;
643 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
644
645 vec[0].iov_base = (void*)&target;
646 vec[0].iov_len = sizeof(target);
647
648 got = recvmsg(sock, &msg, 0);
2aa47728
NC
649
650 if(got == 0)
651 break;
652 if(got < 0) {
808ad2d0
NC
653 where = "recv failed";
654 goto abort;
2aa47728
NC
655 }
656 if(got < sizeof(target)) {
808ad2d0
NC
657 where = "short recv";
658 goto abort;
2aa47728 659 }
bf357333 660
808ad2d0
NC
661 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
662 where = "no cmsg";
663 goto abort;
664 }
665 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
666 where = "wrong cmsg_len";
667 goto abort;
668 }
669 if(cmptr->cmsg_level != SOL_SOCKET) {
670 where = "wrong cmsg_level";
671 goto abort;
672 }
673 if(cmptr->cmsg_type != SCM_RIGHTS) {
674 where = "wrong cmsg_type";
675 goto abort;
676 }
bf357333
NC
677
678 got_fd = *(int*)CMSG_DATA(cmptr);
679 /* For our last little bit of trickery, put the file descriptor
680 back into Perl_debug_log, as if we never actually closed it
681 */
808ad2d0
NC
682 if(got_fd != debug_fd) {
683 if (dup2(got_fd, debug_fd) == -1) {
684 where = "dup2";
685 goto abort;
686 }
687 }
2aa47728 688 sv_dump(target);
bf357333 689
2aa47728
NC
690 PerlIO_flush(Perl_debug_log);
691
808ad2d0 692 got = write(sock, &success, sizeof(success));
2aa47728
NC
693
694 if(got < 0) {
808ad2d0
NC
695 where = "write failed";
696 goto abort;
2aa47728 697 }
808ad2d0
NC
698 if(got < sizeof(success)) {
699 where = "short write";
700 goto abort;
2aa47728
NC
701 }
702 }
703 _exit(0);
808ad2d0
NC
704 abort:
705 {
706 int send_errno = errno;
707 unsigned char length = (unsigned char) strlen(where);
708 struct iovec failure[3] = {
709 {(void*)&send_errno, sizeof(send_errno)},
710 {&length, 1},
711 {(void*)where, length}
712 };
713 int got = writev(sock, failure, 3);
714 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
715 in the parent if we try to read from the socketpair after the
716 child has exited, even if there was data to read.
717 So sleep a bit to give the parent a fighting chance of
718 reading the data. */
719 sleep(2);
720 _exit((got == -1) ? errno : 0);
721 }
bf357333 722 /* End of child. */
2aa47728 723 }
41e4abd8 724 PL_dumper_fd = fd[0];
2aa47728
NC
725 close(fd[1]);
726 }
727#endif
728
ff0cee69
PP
729 /* We must account for everything. */
730
731 /* Destroy the main CV and syntax tree */
37e77c23
FC
732 /* Set PL_curcop now, because destroying ops can cause new SVs
733 to be generated in Perl_pad_swipe, and when running with
734 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
735 op from which the filename structure member is copied. */
17fbfdf6 736 PL_curcop = &PL_compiling;
3280af22 737 if (PL_main_root) {
4e380990
DM
738 /* ensure comppad/curpad to refer to main's pad */
739 if (CvPADLIST(PL_main_cv)) {
740 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
741 }
3280af22 742 op_free(PL_main_root);
5f66b61c 743 PL_main_root = NULL;
a0d0e21e 744 }
5f66b61c 745 PL_main_start = NULL;
aac9d523
DM
746 /* note that PL_main_cv isn't usually actually freed at this point,
747 * due to the CvOUTSIDE refs from subs compiled within it. It will
748 * get freed once all the subs are freed in sv_clean_all(), for
749 * destruct_level > 0 */
3280af22 750 SvREFCNT_dec(PL_main_cv);
601f1833 751 PL_main_cv = NULL;
ca7b837b 752 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 753
13621cfb
NIS
754 /* Tell PerlIO we are about to tear things apart in case
755 we have layers which are using resources that should
756 be cleaned up now.
757 */
758
759 PerlIO_destruct(aTHX);
760
ddf23d4a
SM
761 /*
762 * Try to destruct global references. We do this first so that the
763 * destructors and destructees still exist. Some sv's might remain.
764 * Non-referenced objects are on their own.
765 */
766 sv_clean_objs();
8990e307 767
5cd24f17 768 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 769 SvREFCNT_dec(PL_warnhook);
a0714e2c 770 PL_warnhook = NULL;
3280af22 771 SvREFCNT_dec(PL_diehook);
a0714e2c 772 PL_diehook = NULL;
5cd24f17 773
4b556e6c 774 /* call exit list functions */
3280af22 775 while (PL_exitlistlen-- > 0)
acfe0abc 776 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 777
3280af22 778 Safefree(PL_exitlist);
4b556e6c 779
1c4916e5
CB
780 PL_exitlist = NULL;
781 PL_exitlistlen = 0;
782
a3e6e81e
NC
783 SvREFCNT_dec(PL_registered_mros);
784
551a8b83 785 /* jettison our possibly duplicated environment */
4b647fb0
DM
786 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
787 * so we certainly shouldn't free it here
788 */
2f42fcb0 789#ifndef PERL_MICRO
4b647fb0 790#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 791 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
792#ifdef USE_ITHREADS
793 /* only main thread can free environ[0] contents */
794 && PL_curinterp == aTHX
795#endif
796 )
797 {
551a8b83
JH
798 I32 i;
799
800 for (i = 0; environ[i]; i++)
4b420006 801 safesysfree(environ[i]);
0631ea03 802
4b420006
JH
803 /* Must use safesysfree() when working with environ. */
804 safesysfree(environ);
551a8b83
JH
805
806 environ = PL_origenviron;
807 }
808#endif
2f42fcb0 809#endif /* !PERL_MICRO */
551a8b83 810
30985c42
JH
811 if (destruct_level == 0) {
812
813 DEBUG_P(debprofdump());
814
815#if defined(PERLIO_LAYERS)
816 /* No more IO - including error messages ! */
817 PerlIO_cleanup(aTHX);
818#endif
819
820 CopFILE_free(&PL_compiling);
30985c42
JH
821
822 /* The exit() function will do everything that needs doing. */
823 return STATUS_EXIT;
824 }
825
5f8cb046
DM
826#ifdef USE_ITHREADS
827 /* the syntax tree is shared between clones
828 * so op_free(PL_main_root) only ReREFCNT_dec's
829 * REGEXPs in the parent interpreter
830 * we need to manually ReREFCNT_dec for the clones
831 */
0547a729
DM
832 {
833 I32 i = AvFILLp(PL_regex_padav);
834 SV **ary = AvARRAY(PL_regex_padav);
835
836 for (; i; i--) {
837 SvREFCNT_dec(ary[i]);
838 ary[i] = &PL_sv_undef;
839 }
840 }
5f8cb046
DM
841#endif
842
0547a729 843
ad64d0ec 844 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
845 PL_stashcache = NULL;
846
5f05dabc
PP
847 /* loosen bonds of global variables */
848
2f9285f8
DM
849 /* XXX can PL_parser still be non-null here? */
850 if(PL_parser && PL_parser->rsfp) {
851 (void)PerlIO_close(PL_parser->rsfp);
852 PL_parser->rsfp = NULL;
8ebc5c01
PP
853 }
854
84386e14
RGS
855 if (PL_minus_F) {
856 Safefree(PL_splitstr);
857 PL_splitstr = NULL;
858 }
859
8ebc5c01 860 /* switches */
3280af22
NIS
861 PL_minus_n = FALSE;
862 PL_minus_p = FALSE;
863 PL_minus_l = FALSE;
864 PL_minus_a = FALSE;
865 PL_minus_F = FALSE;
866 PL_doswitches = FALSE;
599cee73 867 PL_dowarn = G_WARN_OFF;
1a904fc8 868#ifdef PERL_SAWAMPERSAND
d3b97530 869 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 870#endif
3280af22
NIS
871 PL_unsafe = FALSE;
872
873 Safefree(PL_inplace);
bd61b366 874 PL_inplace = NULL;
a7cb1f99 875 SvREFCNT_dec(PL_patchlevel);
1e8125c6 876 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
877
878 if (PL_e_script) {
879 SvREFCNT_dec(PL_e_script);
a0714e2c 880 PL_e_script = NULL;
8ebc5c01
PP
881 }
882
bf9cdc68
RG
883 PL_perldb = 0;
884
8ebc5c01
PP
885 /* magical thingies */
886
e23d9e2f
CS
887 SvREFCNT_dec(PL_ofsgv); /* *, */
888 PL_ofsgv = NULL;
5f05dabc 889
7889fe52 890 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 891 PL_ors_sv = NULL;
8ebc5c01 892
3280af22 893 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 894 PL_rs = NULL;
dc92893f 895
d33b2eba 896 Safefree(PL_osname); /* $^O */
bd61b366 897 PL_osname = NULL;
5f05dabc 898
3280af22 899 SvREFCNT_dec(PL_statname);
a0714e2c
SS
900 PL_statname = NULL;
901 PL_statgv = NULL;
5f05dabc 902
8ebc5c01
PP
903 /* defgv, aka *_ should be taken care of elsewhere */
904
7d5ea4e7
GS
905 /* float buffer */
906 Safefree(PL_efloatbuf);
bd61b366 907 PL_efloatbuf = NULL;
7d5ea4e7
GS
908 PL_efloatsize = 0;
909
8ebc5c01 910 /* startup and shutdown function lists */
3280af22 911 SvREFCNT_dec(PL_beginav);
5a837c8f 912 SvREFCNT_dec(PL_beginav_save);
3280af22 913 SvREFCNT_dec(PL_endav);
7d30b5c4 914 SvREFCNT_dec(PL_checkav);
ece599bd 915 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
916 SvREFCNT_dec(PL_unitcheckav);
917 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 918 SvREFCNT_dec(PL_initav);
7d49f689
NC
919 PL_beginav = NULL;
920 PL_beginav_save = NULL;
921 PL_endav = NULL;
922 PL_checkav = NULL;
923 PL_checkav_save = NULL;
3c10abe3
AG
924 PL_unitcheckav = NULL;
925 PL_unitcheckav_save = NULL;
7d49f689 926 PL_initav = NULL;
5618dfe8 927
8ebc5c01 928 /* shortcuts just get cleared */
a0714e2c
SS
929 PL_envgv = NULL;
930 PL_incgv = NULL;
931 PL_hintgv = NULL;
932 PL_errgv = NULL;
933 PL_argvgv = NULL;
934 PL_argvoutgv = NULL;
935 PL_stdingv = NULL;
936 PL_stderrgv = NULL;
937 PL_last_in_gv = NULL;
938 PL_replgv = NULL;
939 PL_DBgv = NULL;
940 PL_DBline = NULL;
941 PL_DBsub = NULL;
942 PL_DBsingle = NULL;
943 PL_DBtrace = NULL;
944 PL_DBsignal = NULL;
601f1833 945 PL_DBcv = NULL;
7d49f689 946 PL_dbargs = NULL;
5c284bb0 947 PL_debstash = NULL;
8ebc5c01 948
7a1c5554 949 SvREFCNT_dec(PL_argvout_stack);
7d49f689 950 PL_argvout_stack = NULL;
8ebc5c01 951
5c831c24 952 SvREFCNT_dec(PL_modglobal);
5c284bb0 953 PL_modglobal = NULL;
5c831c24 954 SvREFCNT_dec(PL_preambleav);
7d49f689 955 PL_preambleav = NULL;
5c831c24 956 SvREFCNT_dec(PL_subname);
a0714e2c 957 PL_subname = NULL;
ca0c25f6 958#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 959 SvREFCNT_dec(PL_pidstatus);
5c284bb0 960 PL_pidstatus = NULL;
ca0c25f6 961#endif
5c831c24 962 SvREFCNT_dec(PL_toptarget);
a0714e2c 963 PL_toptarget = NULL;
5c831c24 964 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
965 PL_bodytarget = NULL;
966 PL_formtarget = NULL;
5c831c24 967
d33b2eba 968 /* free locale stuff */
b9582b6a 969#ifdef USE_LOCALE_COLLATE
d33b2eba 970 Safefree(PL_collation_name);
bd61b366 971 PL_collation_name = NULL;
b9582b6a 972#endif
d33b2eba 973
b9582b6a 974#ifdef USE_LOCALE_NUMERIC
d33b2eba 975 Safefree(PL_numeric_name);
bd61b366 976 PL_numeric_name = NULL;
a453c169 977 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 978 PL_numeric_radix_sv = NULL;
b9582b6a 979#endif
d33b2eba 980
9c0b6888
KW
981 /* clear character classes */
982 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
983 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
984 PL_utf8_swash_ptrs[i] = NULL;
985 }
5c831c24
GS
986 SvREFCNT_dec(PL_utf8_mark);
987 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 988 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 989 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 990 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
991 SvREFCNT_dec(PL_utf8_idstart);
992 SvREFCNT_dec(PL_utf8_idcont);
2726813d 993 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c
SS
994 PL_utf8_mark = NULL;
995 PL_utf8_toupper = NULL;
996 PL_utf8_totitle = NULL;
997 PL_utf8_tolower = NULL;
998 PL_utf8_tofold = NULL;
999 PL_utf8_idstart = NULL;
1000 PL_utf8_idcont = NULL;
2726813d 1001 PL_utf8_foldclosures = NULL;
86f72d56 1002 for (i = 0; i < POSIX_CC_COUNT; i++) {
30f9bdb0
KW
1003 SvREFCNT_dec(PL_Posix_ptrs[i]);
1004 PL_Posix_ptrs[i] = NULL;
1005
86f72d56
KW
1006 SvREFCNT_dec(PL_L1Posix_ptrs[i]);
1007 PL_L1Posix_ptrs[i] = NULL;
cac6e0ca
KW
1008
1009 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1010 PL_XPosix_ptrs[i] = NULL;
86f72d56 1011 }
5c831c24 1012
971a9dd3 1013 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1014 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1015 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1016 cophh_free(CopHINTHASH_get(&PL_compiling));
1017 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1018 CopFILE_free(&PL_compiling);
5c831c24 1019
a0d0e21e 1020 /* Prepare to destruct main symbol table. */
5f05dabc 1021
3280af22 1022 hv = PL_defstash;
ca556bcd
DM
1023 /* break ref loop *:: <=> %:: */
1024 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1025 PL_defstash = 0;
a0d0e21e 1026 SvREFCNT_dec(hv);
5c831c24 1027 SvREFCNT_dec(PL_curstname);
a0714e2c 1028 PL_curstname = NULL;
a0d0e21e 1029
5a844595
GS
1030 /* clear queued errors */
1031 SvREFCNT_dec(PL_errors);
a0714e2c 1032 PL_errors = NULL;
5a844595 1033
dd69841b
BB
1034 SvREFCNT_dec(PL_isarev);
1035
a0d0e21e 1036 FREETMPS;
9b387841 1037 if (destruct_level >= 2) {
3280af22 1038 if (PL_scopestack_ix != 0)
9b387841
NC
1039 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1040 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1041 (long)PL_scopestack_ix);
3280af22 1042 if (PL_savestack_ix != 0)
9b387841
NC
1043 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1044 "Unbalanced saves: %ld more saves than restores\n",
1045 (long)PL_savestack_ix);
3280af22 1046 if (PL_tmps_floor != -1)
9b387841
NC
1047 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1048 (long)PL_tmps_floor + 1);
a0d0e21e 1049 if (cxstack_ix != -1)
9b387841
NC
1050 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1051 (long)cxstack_ix + 1);
a0d0e21e 1052 }
8990e307 1053
0547a729
DM
1054#ifdef USE_ITHREADS
1055 SvREFCNT_dec(PL_regex_padav);
1056 PL_regex_padav = NULL;
1057 PL_regex_pad = NULL;
1058#endif
1059
776df701 1060#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1061 /* the entries in this list are allocated via SV PVX's, so get freed
1062 * in sv_clean_all */
1063 Safefree(PL_my_cxt_list);
776df701 1064#endif
57bb2458 1065
8990e307 1066 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1067
1068 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1069 while (sv_clean_all() > 2)
5226ed68
JH
1070 ;
1071
23083432
FC
1072#ifdef USE_ITHREADS
1073 Safefree(PL_stashpad); /* must come after sv_clean_all */
1074#endif
1075
d4777f27
GS
1076 AvREAL_off(PL_fdpid); /* no surviving entries */
1077 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1078 PL_fdpid = NULL;
d33b2eba 1079
6c644e78
GS
1080#ifdef HAVE_INTERP_INTERN
1081 sys_intern_clear();
1082#endif
1083
6e72f9df
PP
1084 /* Destruct the global string table. */
1085 {
1086 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1087 * so that sv_free() won't fail on them.
80459961
NC
1088 * Now that the global string table is using a single hunk of memory
1089 * for both HE and HEK, we either need to explicitly unshare it the
1090 * correct way, or actually free things here.
6e72f9df 1091 */
80459961
NC
1092 I32 riter = 0;
1093 const I32 max = HvMAX(PL_strtab);
c4420975 1094 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1095 HE *hent = array[0];
1096
6e72f9df 1097 for (;;) {
0453d815 1098 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1099 HE * const next = HeNEXT(hent);
9014280d 1100 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1101 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1102 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1103 Safefree(hent);
1104 hent = next;
6e72f9df
PP
1105 }
1106 if (!hent) {
1107 if (++riter > max)
1108 break;
1109 hent = array[riter];
1110 }
1111 }
80459961
NC
1112
1113 Safefree(array);
1114 HvARRAY(PL_strtab) = 0;
1115 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1116 }
3280af22 1117 SvREFCNT_dec(PL_strtab);
6e72f9df 1118
e652bb2f 1119#ifdef USE_ITHREADS
c21d1a0f 1120 /* free the pointer tables used for cloning */
a0739874 1121 ptr_table_free(PL_ptr_table);
bf9cdc68 1122 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1123#endif
a0739874 1124
d33b2eba
GS
1125 /* free special SVs */
1126
1127 SvREFCNT(&PL_sv_yes) = 0;
1128 sv_clear(&PL_sv_yes);
1129 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1130 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1131
1132 SvREFCNT(&PL_sv_no) = 0;
1133 sv_clear(&PL_sv_no);
1134 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1135 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1136
9f375a43
DM
1137 {
1138 int i;
1139 for (i=0; i<=2; i++) {
1140 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1141 sv_clear(PERL_DEBUG_PAD(i));
1142 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1143 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1144 }
1145 }
1146
0453d815 1147 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1148 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1149
eba0f806
DM
1150#ifdef DEBUG_LEAKING_SCALARS
1151 if (PL_sv_count != 0) {
1152 SV* sva;
1153 SV* sv;
eb578fdb 1154 SV* svend;
eba0f806 1155
ad64d0ec 1156 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1157 svend = &sva[SvREFCNT(sva)];
1158 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1159 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1160 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1161 " flags=0x%"UVxf
fd0854ff 1162 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1163 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1164 "serial %"UVuf"\n",
574b8821
NC
1165 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1166 pTHX__VALUE,
fd0854ff
DM
1167 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1168 sv->sv_debug_line,
1169 sv->sv_debug_inpad ? "for" : "by",
1170 sv->sv_debug_optype ?
1171 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1172 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1173 sv->sv_debug_serial
fd0854ff 1174 );
2aa47728 1175#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1176 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1177#endif
eba0f806
DM
1178 }
1179 }
1180 }
1181 }
2aa47728
NC
1182#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1183 {
1184 int status;
1185 fd_set rset;
1186 /* Wait for up to 4 seconds for child to terminate.
1187 This seems to be the least effort way of timing out on reaping
1188 its exit status. */
1189 struct timeval waitfor = {4, 0};
41e4abd8 1190 int sock = PL_dumper_fd;
2aa47728
NC
1191
1192 shutdown(sock, 1);
1193 FD_ZERO(&rset);
1194 FD_SET(sock, &rset);
1195 select(sock + 1, &rset, NULL, NULL, &waitfor);
1196 waitpid(child, &status, WNOHANG);
1197 close(sock);
1198 }
1199#endif
eba0f806 1200#endif
77abb4c6
NC
1201#ifdef DEBUG_LEAKING_SCALARS_ABORT
1202 if (PL_sv_count)
1203 abort();
1204#endif
bf9cdc68 1205 PL_sv_count = 0;
eba0f806 1206
56a2bab7 1207#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1208 /* No more IO - including error messages ! */
1209 PerlIO_cleanup(aTHX);
1210#endif
1211
9f4bd222 1212 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1213 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1214 for no arg - and will try and SvREFCNT_dec it.
1215 */
1216 SvREFCNT(&PL_sv_undef) = 0;
1217 SvREADONLY_off(&PL_sv_undef);
1218
3280af22 1219 Safefree(PL_origfilename);
bd61b366 1220 PL_origfilename = NULL;
43c5f42d 1221 Safefree(PL_reg_curpm);
dd28f7bb 1222 free_tied_hv_pool();
3280af22 1223 Safefree(PL_op_mask);
cf36064f 1224 Safefree(PL_psig_name);
bf9cdc68 1225 PL_psig_name = (SV**)NULL;
d525a7b2 1226 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1227 {
1228 /* We need to NULL PL_psig_pend first, so that
1229 signal handlers know not to use it */
1230 int *psig_save = PL_psig_pend;
1231 PL_psig_pend = (int*)NULL;
1232 Safefree(psig_save);
1233 }
6e72f9df 1234 nuke_stacks();
284167a5
SM
1235 TAINTING_set(FALSE);
1236 TAINT_WARN_set(FALSE);
3280af22 1237 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1238 PL_debug = 0;
ac27b0f5 1239
a0d0e21e 1240 DEBUG_P(debprofdump());
d33b2eba 1241
e5dd39fc 1242#ifdef USE_REENTRANT_API
10bc17b6 1243 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1244#endif
1245
612f20c3
GS
1246 sv_free_arenas();
1247
5d9a96ca
DM
1248 while (PL_regmatch_slab) {
1249 regmatch_slab *s = PL_regmatch_slab;
1250 PL_regmatch_slab = PL_regmatch_slab->next;
1251 Safefree(s);
1252 }
1253
fc36a67e
PP
1254 /* As the absolutely last thing, free the non-arena SV for mess() */
1255
3280af22 1256 if (PL_mess_sv) {
f350b448
NC
1257 /* we know that type == SVt_PVMG */
1258
9c63abab 1259 /* it could have accumulated taint magic */
f350b448
NC
1260 MAGIC* mg;
1261 MAGIC* moremagic;
1262 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1263 moremagic = mg->mg_moremagic;
1264 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1265 && mg->mg_len >= 0)
1266 Safefree(mg->mg_ptr);
1267 Safefree(mg);
9c63abab 1268 }
f350b448 1269
fc36a67e 1270 /* we know that type >= SVt_PV */
8bd4d4c5 1271 SvPV_free(PL_mess_sv);
3280af22
NIS
1272 Safefree(SvANY(PL_mess_sv));
1273 Safefree(PL_mess_sv);
a0714e2c 1274 PL_mess_sv = NULL;
fc36a67e 1275 }
37038d91 1276 return STATUS_EXIT;
79072805
LW
1277}
1278
954c1994
GS
1279/*
1280=for apidoc perl_free
1281
1282Releases a Perl interpreter. See L<perlembed>.
1283
1284=cut
1285*/
1286
79072805 1287void
0cb96387 1288perl_free(pTHXx)
79072805 1289{
5174512c
NC
1290 dVAR;
1291
7918f24d
NC
1292 PERL_ARGS_ASSERT_PERL_FREE;
1293
c301d606
DM
1294 if (PL_veto_cleanup)
1295 return;
1296
7cb608b5 1297#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1298 {
1299 /*
1300 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1301 * value as we're probably hunting memory leaks then
1302 */
36e77d41 1303 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1304 const U32 old_debug = PL_debug;
55ef9aae
MHM
1305 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1306 thread at thread exit. */
4fd0a9b8
NC
1307 if (DEBUG_m_TEST) {
1308 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1309 "free this thread's memory\n");
1310 PL_debug &= ~ DEBUG_m_FLAG;
1311 }
55ef9aae
MHM
1312 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1313 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1314 PL_debug = old_debug;
55ef9aae
MHM
1315 }
1316 }
7cb608b5
NC
1317#endif
1318
acfe0abc 1319#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1320# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1321 {
acfe0abc 1322# ifdef NETWARE
7af12a34 1323 void *host = nw_internal_host;
acfe0abc 1324# else
7af12a34 1325 void *host = w32_internal_host;
acfe0abc 1326# endif
7af12a34 1327 PerlMem_free(aTHXx);
acfe0abc 1328# ifdef NETWARE
7af12a34 1329 nw_delete_internal_host(host);
acfe0abc 1330# else
7af12a34 1331 win32_delete_internal_host(host);
acfe0abc 1332# endif
7af12a34 1333 }
1c0ca838
GS
1334# else
1335 PerlMem_free(aTHXx);
1336# endif
acfe0abc
GS
1337#else
1338 PerlMem_free(aTHXx);
76e3520e 1339#endif
79072805
LW
1340}
1341
b7f7fff6 1342#if defined(USE_ITHREADS)
aebd1ac7
GA
1343/* provide destructors to clean up the thread key when libperl is unloaded */
1344#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1345
826955bd 1346#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1347#pragma fini "perl_fini"
666ad1ec
GA
1348#elif defined(__sun) && !defined(__GNUC__)
1349#pragma fini (perl_fini)
aebd1ac7
GA
1350#endif
1351
0dbb1585
AL
1352static void
1353#if defined(__GNUC__)
1354__attribute__((destructor))
aebd1ac7 1355#endif
de009b76 1356perl_fini(void)
aebd1ac7 1357{
27da23d5 1358 dVAR;
c301d606 1359 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1360 FREE_THREAD_KEY;
1361}
1362
1363#endif /* WIN32 */
1364#endif /* THREADS */
1365
4b556e6c 1366void
864dbfa3 1367Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1368{
97aff369 1369 dVAR;
3280af22
NIS
1370 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1371 PL_exitlist[PL_exitlistlen].fn = fn;
1372 PL_exitlist[PL_exitlistlen].ptr = ptr;
1373 ++PL_exitlistlen;
4b556e6c
JD
1374}
1375
b7975bdd
NC
1376STATIC void
1377S_set_caret_X(pTHX) {
97aff369 1378 dVAR;
fafc274c 1379 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1380 if (tmpgv) {
0f1723e1 1381 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1382#if defined(OS2)
1383 sv_setpv(caret_x, os2_execname(aTHX));
1384#else
2982a345
NC
1385# ifdef USE_KERN_PROC_PATHNAME
1386 size_t size = 0;
1387 int mib[4];
1388 mib[0] = CTL_KERN;
1389 mib[1] = KERN_PROC;
1390 mib[2] = KERN_PROC_PATHNAME;
1391 mib[3] = -1;
1392
1393 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1394 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1395 sv_grow(caret_x, size);
1396
1397 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1398 && size > 2) {
1399 SvPOK_only(caret_x);
1400 SvCUR_set(caret_x, size - 1);
1401 SvTAINT(caret_x);
1402 return;
1403 }
1404 }
ae60cb46
NC
1405# elif defined(USE_NSGETEXECUTABLEPATH)
1406 char buf[1];
1407 uint32_t size = sizeof(buf);
ae60cb46
NC
1408
1409 _NSGetExecutablePath(buf, &size);
1410 if (size < MAXPATHLEN * MAXPATHLEN) {
1411 sv_grow(caret_x, size);
1412 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1413 char *const tidied = realpath(SvPVX(caret_x), NULL);
1414 if (tidied) {
1415 sv_setpv(caret_x, tidied);
1416 free(tidied);
1417 } else {
1418 SvPOK_only(caret_x);
1419 SvCUR_set(caret_x, size);
1420 }
1421 return;
1422 }
1423 }
2982a345 1424# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1425 char buf[MAXPATHLEN];
1426 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1427
1428 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1429 includes a spurious NUL which will cause $^X to fail in system
1430 or backticks (this will prevent extensions from being built and
1431 many tests from working). readlink is not meant to add a NUL.
1432 Normal readlink works fine.
1433 */
1434 if (len > 0 && buf[len-1] == '\0') {
1435 len--;
1436 }
1437
1438 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1439 returning the text "unknown" from the readlink rather than the path
1440 to the executable (or returning an error from the readlink). Any
1441 valid path has a '/' in it somewhere, so use that to validate the
1442 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1443 */
1444 if (len > 0 && memchr(buf, '/', len)) {
1445 sv_setpvn(caret_x, buf, len);
82552a95 1446 return;
700dd4f8 1447 }
82552a95
NC
1448# endif
1449 /* Fallback to this: */
0f1723e1 1450 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1451#endif
b7975bdd
NC
1452 }
1453}
1454
954c1994
GS
1455/*
1456=for apidoc perl_parse
1457
1458Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1459
1460=cut
1461*/
1462
03d9f026
FC
1463#define SET_CURSTASH(newstash) \
1464 if (PL_curstash != newstash) { \
1465 SvREFCNT_dec(PL_curstash); \
1466 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1467 }
1468
79072805 1469int
0cb96387 1470perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1471{
27da23d5 1472 dVAR;
6224f72b 1473 I32 oldscope;
6224f72b 1474 int ret;
db36c5a1 1475 dJMPENV;
8d063cd8 1476
7918f24d
NC
1477 PERL_ARGS_ASSERT_PERL_PARSE;
1478#ifndef MULTIPLICITY
ed6c66dd 1479 PERL_UNUSED_ARG(my_perl);
7918f24d 1480#endif
7dc86639 1481#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1482 {
7dc86639
YO
1483 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1484
1485 if (s && (atoi(s) == 1)) {
1486 unsigned char *seed= PERL_HASH_SEED;
1487 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1488 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1489 while (seed < seed_end) {
1490 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1491 }
6a5b4183
YO
1492#ifdef PERL_HASH_RANDOMIZE_KEYS
1493 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1494 PL_HASH_RAND_BITS_ENABLED,
1495 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1496#endif
7dc86639
YO
1497 PerlIO_printf(Perl_debug_log, "\n");
1498 }
b0891165
JH
1499 }
1500#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1501 PL_origargc = argc;
e2975953 1502 PL_origargv = argv;
a0d0e21e 1503
a2722ac9
GA
1504 if (PL_origalen != 0) {
1505 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1506 }
1507 else {
3cb9023d
JH
1508 /* Set PL_origalen be the sum of the contiguous argv[]
1509 * elements plus the size of the env in case that it is
e9137a8e 1510 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1511 * as the maximum modifiable length of $0. In the worst case
1512 * the area we are able to modify is limited to the size of
43c32782 1513 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1514 * --jhi */
e1ec3a88 1515 const char *s = NULL;
54bfe034 1516 int i;
1b6737cc 1517 const UV mask =
7d8e7db3 1518 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1519 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1520 const UV aligned =
43c32782
JH
1521 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1522
1523 /* See if all the arguments are contiguous in memory. Note
1524 * that 'contiguous' is a loose term because some platforms
1525 * align the argv[] and the envp[]. If the arguments look
1526 * like non-aligned, assume that they are 'strictly' or
1527 * 'traditionally' contiguous. If the arguments look like
1528 * aligned, we just check that they are within aligned
1529 * PTRSIZE bytes. As long as no system has something bizarre
1530 * like the argv[] interleaved with some other data, we are
1531 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1532 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1533 while (*s) s++;
1534 for (i = 1; i < PL_origargc; i++) {
1535 if ((PL_origargv[i] == s + 1
43c32782 1536#ifdef OS2
c8941eeb 1537 || PL_origargv[i] == s + 2
43c32782 1538#endif
c8941eeb
JH
1539 )
1540 ||
1541 (aligned &&
1542 (PL_origargv[i] > s &&
1543 PL_origargv[i] <=
1544 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1545 )
1546 {
1547 s = PL_origargv[i];
1548 while (*s) s++;
1549 }
1550 else
1551 break;
54bfe034 1552 }
54bfe034 1553 }
a4a109c2
JD
1554
1555#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1556 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1557 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1558 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1559 ||
1560 (aligned &&
1561 (PL_origenviron[0] > s &&
1562 PL_origenviron[0] <=
1563 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1564 )
1565 {
9d419b5f 1566#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1567 s = PL_origenviron[0];
1568 while (*s) s++;
1569#endif
bd61b366 1570 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1571 /* Force copy of environment. */
1572 for (i = 1; PL_origenviron[i]; i++) {
1573 if (PL_origenviron[i] == s + 1
1574 ||
1575 (aligned &&
1576 (PL_origenviron[i] > s &&
1577 PL_origenviron[i] <=
1578 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1579 )
1580 {
1581 s = PL_origenviron[i];
1582 while (*s) s++;
1583 }
1584 else
1585 break;
54bfe034 1586 }
43c32782 1587 }
54bfe034 1588 }
a4a109c2
JD
1589#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1590
2d2af554 1591 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1592 }
1593
3280af22 1594 if (PL_do_undump) {
a0d0e21e
LW
1595
1596 /* Come here if running an undumped a.out. */
1597
3280af22
NIS
1598 PL_origfilename = savepv(argv[0]);
1599 PL_do_undump = FALSE;
a0d0e21e 1600 cxstack_ix = -1; /* start label stack again */
748a9306 1601 init_ids();
284167a5 1602 assert (!TAINT_get);
b7975bdd
NC
1603 TAINT;
1604 S_set_caret_X(aTHX);
1605 TAINT_NOT;
a0d0e21e
LW
1606 init_postdump_symbols(argc,argv,env);
1607 return 0;
1608 }
1609
3280af22 1610 if (PL_main_root) {
3280af22 1611 op_free(PL_main_root);
5f66b61c 1612 PL_main_root = NULL;
ff0cee69 1613 }
5f66b61c 1614 PL_main_start = NULL;
3280af22 1615 SvREFCNT_dec(PL_main_cv);
601f1833 1616 PL_main_cv = NULL;
79072805 1617
3280af22
NIS
1618 time(&PL_basetime);
1619 oldscope = PL_scopestack_ix;
599cee73 1620 PL_dowarn = G_WARN_OFF;
f86702cc 1621
14dd3ad8 1622 JMPENV_PUSH(ret);
6224f72b 1623 switch (ret) {
312caa8e 1624 case 0:
14dd3ad8 1625 parse_body(env,xsinit);
9ebf26ad 1626 if (PL_unitcheckav) {
3c10abe3 1627 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1628 }
1629 if (PL_checkav) {
ca7b837b 1630 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1631 call_list(oldscope, PL_checkav);
9ebf26ad 1632 }
14dd3ad8
GS
1633 ret = 0;
1634 break;
6224f72b
GS
1635 case 1:
1636 STATUS_ALL_FAILURE;
1637 /* FALL THROUGH */
1638 case 2:
1639 /* my_exit() was called */
3280af22 1640 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1641 LEAVE;
1642 FREETMPS;
03d9f026 1643 SET_CURSTASH(PL_defstash);
9ebf26ad 1644 if (PL_unitcheckav) {
3c10abe3 1645 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1646 }
1647 if (PL_checkav) {
ca7b837b 1648 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1649 call_list(oldscope, PL_checkav);
9ebf26ad 1650 }
37038d91 1651 ret = STATUS_EXIT;
14dd3ad8 1652 break;
6224f72b 1653 case 3:
bf49b057 1654 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1655 ret = 1;
1656 break;
6224f72b 1657 }
14dd3ad8
GS
1658 JMPENV_POP;
1659 return ret;
1660}
1661
4a5df386
NC
1662/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1663 miniperl, and we need to see those flags reflected in the values here. */
1664
1665/* What this returns is subject to change. Use the public interface in Config.
1666 */
1667static void
1668S_Internals_V(pTHX_ CV *cv)
1669{
1670 dXSARGS;
1671#ifdef LOCAL_PATCH_COUNT
1672 const int local_patch_count = LOCAL_PATCH_COUNT;
1673#else
1674 const int local_patch_count = 0;
1675#endif
2dc296d2 1676 const int entries = 3 + local_patch_count;
4a5df386 1677 int i;
fe1c5936 1678 static const char non_bincompat_options[] =
4a5df386
NC
1679# ifdef DEBUGGING
1680 " DEBUGGING"
1681# endif
1682# ifdef NO_MATHOMS
0d311fbe 1683 " NO_MATHOMS"
4a5df386 1684# endif
59b86f4b
DM
1685# ifdef NO_HASH_SEED
1686 " NO_HASH_SEED"
1687# endif
3b0e4ee2
MB
1688# ifdef NO_TAINT_SUPPORT
1689 " NO_TAINT_SUPPORT"
1690# endif
4a5df386
NC
1691# ifdef PERL_DISABLE_PMC
1692 " PERL_DISABLE_PMC"
1693# endif
1694# ifdef PERL_DONT_CREATE_GVSV
1695 " PERL_DONT_CREATE_GVSV"
1696# endif
9a044a43
NC
1697# ifdef PERL_EXTERNAL_GLOB
1698 " PERL_EXTERNAL_GLOB"
1699# endif
59b86f4b
DM
1700# ifdef PERL_HASH_FUNC_SIPHASH
1701 " PERL_HASH_FUNC_SIPHASH"
1702# endif
1703# ifdef PERL_HASH_FUNC_SDBM
1704 " PERL_HASH_FUNC_SDBM"
1705# endif
1706# ifdef PERL_HASH_FUNC_DJB2
1707 " PERL_HASH_FUNC_DJB2"
1708# endif
1709# ifdef PERL_HASH_FUNC_SUPERFAST
1710 " PERL_HASH_FUNC_SUPERFAST"
1711# endif
1712# ifdef PERL_HASH_FUNC_MURMUR3
1713 " PERL_HASH_FUNC_MURMUR3"
1714# endif
1715# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1716 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1717# endif
1718# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1719 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1720# endif
1721# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1722 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1723# endif
4a5df386
NC
1724# ifdef PERL_IS_MINIPERL
1725 " PERL_IS_MINIPERL"
1726# endif
1727# ifdef PERL_MALLOC_WRAP
1728 " PERL_MALLOC_WRAP"
1729# endif
1730# ifdef PERL_MEM_LOG
1731 " PERL_MEM_LOG"
1732# endif
1733# ifdef PERL_MEM_LOG_NOIMPL
1734 " PERL_MEM_LOG_NOIMPL"
1735# endif
2542212d
DM
1736# ifdef PERL_NEW_COPY_ON_WRITE
1737 " PERL_NEW_COPY_ON_WRITE"
1738# endif
59b86f4b
DM
1739# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1740 " PERL_PERTURB_KEYS_DETERMINISTIC"
1741# endif
1742# ifdef PERL_PERTURB_KEYS_DISABLED
1743 " PERL_PERTURB_KEYS_DISABLED"
1744# endif
1745# ifdef PERL_PERTURB_KEYS_RANDOM
1746 " PERL_PERTURB_KEYS_RANDOM"
1747# endif
c3cf41ec
NC
1748# ifdef PERL_PRESERVE_IVUV
1749 " PERL_PRESERVE_IVUV"
1750# endif
c051e30b
NC
1751# ifdef PERL_RELOCATABLE_INCPUSH
1752 " PERL_RELOCATABLE_INCPUSH"
1753# endif
4a5df386
NC
1754# ifdef PERL_USE_DEVEL
1755 " PERL_USE_DEVEL"
1756# endif
1757# ifdef PERL_USE_SAFE_PUTENV
1758 " PERL_USE_SAFE_PUTENV"
1759# endif
a3749cf3
NC
1760# ifdef UNLINK_ALL_VERSIONS
1761 " UNLINK_ALL_VERSIONS"
1762# endif
de618ee4
NC
1763# ifdef USE_ATTRIBUTES_FOR_PERLIO
1764 " USE_ATTRIBUTES_FOR_PERLIO"
1765# endif
4a5df386
NC
1766# ifdef USE_FAST_STDIO
1767 " USE_FAST_STDIO"
1768# endif
59b86f4b
DM
1769# ifdef USE_HASH_SEED_EXPLICIT
1770 " USE_HASH_SEED_EXPLICIT"
1771# endif
98548bdf
NC
1772# ifdef USE_LOCALE
1773 " USE_LOCALE"
1774# endif
98548bdf
NC
1775# ifdef USE_LOCALE_CTYPE
1776 " USE_LOCALE_CTYPE"
1777# endif
5a8d8935
NC
1778# ifdef USE_PERL_ATOF
1779 " USE_PERL_ATOF"
1780# endif
0d311fbe
NC
1781# ifdef USE_SITECUSTOMIZE
1782 " USE_SITECUSTOMIZE"
1783# endif
4a5df386
NC
1784 ;
1785 PERL_UNUSED_ARG(cv);
1786 PERL_UNUSED_ARG(items);
1787
1788 EXTEND(SP, entries);
1789
1790 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1791 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1792 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1793
1794#ifdef __DATE__
1795# ifdef __TIME__
1796 PUSHs(Perl_newSVpvn_flags(aTHX_
1797 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1798 SVs_TEMP));
1799# else
1800 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1801 SVs_TEMP));
1802# endif
1803#else
1804 PUSHs(&PL_sv_undef);
1805#endif
1806
4a5df386
NC
1807 for (i = 1; i <= local_patch_count; i++) {
1808 /* This will be an undef, if PL_localpatches[i] is NULL. */
1809 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1810 }
1811
1812 XSRETURN(entries);
1813}
1814
be71fc8f
NC
1815#define INCPUSH_UNSHIFT 0x01
1816#define INCPUSH_ADD_OLD_VERS 0x02
1817#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1818#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1819#define INCPUSH_NOT_BASEDIR 0x10
1820#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1821#define INCPUSH_ADD_SUB_DIRS \
1822 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1823
312caa8e 1824STATIC void *
14dd3ad8 1825S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1826{
27da23d5 1827 dVAR;
2f9285f8 1828 PerlIO *rsfp;
312caa8e 1829 int argc = PL_origargc;
8f42b153 1830 char **argv = PL_origargv;
e1ec3a88 1831 const char *scriptname = NULL;
312caa8e 1832 VOL bool dosearch = FALSE;
eb578fdb 1833 char c;
737c24fc 1834 bool doextract = FALSE;
bd61b366 1835 const char *cddir = NULL;
ab019eaa 1836#ifdef USE_SITECUSTOMIZE
20ef40cf 1837 bool minus_f = FALSE;
ab019eaa 1838#endif
95670bde 1839 SV *linestr_sv = NULL;
5486870f 1840 bool add_read_e_script = FALSE;
87606032 1841 U32 lex_start_flags = 0;
009d90df 1842
ca7b837b 1843 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1844
6224f72b 1845 init_main_stash();
54310121 1846
c7030b81
NC
1847 {
1848 const char *s;
6224f72b
GS
1849 for (argc--,argv++; argc > 0; argc--,argv++) {
1850 if (argv[0][0] != '-' || !argv[0][1])
1851 break;
6224f72b
GS
1852 s = argv[0]+1;
1853 reswitch:
47f56822 1854 switch ((c = *s)) {
729a02f2 1855 case 'C':
1d5472a9
GS
1856#ifndef PERL_STRICT_CR
1857 case '\r':
1858#endif
6224f72b
GS
1859 case ' ':
1860 case '0':
1861 case 'F':
1862 case 'a':
1863 case 'c':
1864 case 'd':
1865 case 'D':
1866 case 'h':
1867 case 'i':
1868 case 'l':
1869 case 'M':
1870 case 'm':
1871 case 'n':
1872 case 'p':
1873 case 's':
1874 case 'u':
1875 case 'U':
1876 case 'v':
599cee73
PM
1877 case 'W':
1878 case 'X':
6224f72b 1879 case 'w':
97bd5664 1880 if ((s = moreswitches(s)))
6224f72b
GS
1881 goto reswitch;
1882 break;
33b78306 1883
1dbad523 1884 case 't':
284167a5
SM
1885#if SILENT_NO_TAINT_SUPPORT
1886 /* silently ignore */
1887#elif NO_TAINT_SUPPORT
3231f579 1888 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1889 "Cowardly refusing to run with -t or -T flags");
1890#else
22f7c9c9 1891 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1892 if( !TAINTING_get ) {
1893 TAINT_WARN_set(TRUE);
1894 TAINTING_set(TRUE);
317ea90d 1895 }
284167a5 1896#endif
317ea90d
MS
1897 s++;
1898 goto reswitch;
6224f72b 1899 case 'T':
284167a5
SM
1900#if SILENT_NO_TAINT_SUPPORT
1901 /* silently ignore */
1902#elif NO_TAINT_SUPPORT
3231f579 1903 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1904 "Cowardly refusing to run with -t or -T flags");
1905#else
22f7c9c9 1906 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1907 TAINTING_set(TRUE);
1908 TAINT_WARN_set(FALSE);
1909#endif
6224f72b
GS
1910 s++;
1911 goto reswitch;
f86702cc 1912
bc9b29db
RH
1913 case 'E':
1914 PL_minus_E = TRUE;
1915 /* FALL THROUGH */
6224f72b 1916 case 'e':
f20b2998 1917 forbid_setid('e', FALSE);
3280af22 1918 if (!PL_e_script) {
396482e1 1919 PL_e_script = newSVpvs("");
5486870f 1920 add_read_e_script = TRUE;
6224f72b
GS
1921 }
1922 if (*++s)
3280af22 1923 sv_catpv(PL_e_script, s);
6224f72b 1924 else if (argv[1]) {
3280af22 1925 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1926 argc--,argv++;
1927 }
1928 else
47f56822 1929 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1930 sv_catpvs(PL_e_script, "\n");
6224f72b 1931 break;
afe37c7d 1932
20ef40cf 1933 case 'f':
f5542d3a 1934#ifdef USE_SITECUSTOMIZE
20ef40cf 1935 minus_f = TRUE;
f5542d3a 1936#endif
20ef40cf
GA
1937 s++;
1938 goto reswitch;
1939
6224f72b 1940 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1941 forbid_setid('I', FALSE);
bd61b366 1942 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1943 argc--,argv++;
1944 }
6224f72b 1945 if (s && *s) {
0df16ed7 1946 STRLEN len = strlen(s);
55b4bc1c 1947 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1948 }
1949 else
a67e862a 1950 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1951 break;
6224f72b 1952 case 'S':
f20b2998 1953 forbid_setid('S', FALSE);
6224f72b
GS
1954 dosearch = TRUE;
1955 s++;
1956 goto reswitch;
1957 case 'V':
7edfd0ef
NC
1958 {
1959 SV *opts_prog;
1960
7edfd0ef 1961 if (*++s != ':') {
37ca4a5b 1962 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1963 }
1964 else {
1965 ++s;
1966 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1967 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1968 0, s, 0);
1969 s += strlen(s);
1970 }
37ca4a5b 1971 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1972 /* don't look for script or read stdin */
1973 scriptname = BIT_BUCKET;
1974 goto reswitch;
6224f72b 1975 }
6224f72b 1976 case 'x':
737c24fc 1977 doextract = TRUE;
6224f72b 1978 s++;
304334da 1979 if (*s)
f4c556ac 1980 cddir = s;
6224f72b
GS
1981 break;
1982 case 0:
1983 break;
1984 case '-':
1985 if (!*++s || isSPACE(*s)) {
1986 argc--,argv++;
1987 goto switch_end;
1988 }
ee8bc8b7
NC
1989 /* catch use of gnu style long options.
1990 Both of these exit immediately. */
1991 if (strEQ(s, "version"))
1992 minus_v();
1993 if (strEQ(s, "help"))
1994 usage();
6224f72b
GS
1995 s--;
1996 /* FALL THROUGH */
1997 default:
cea2e8a9 1998 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1999 }
2000 }
c7030b81
NC
2001 }
2002
6224f72b 2003 switch_end:
54310121 2004
c7030b81
NC
2005 {
2006 char *s;
2007
f675dbe5
CB
2008 if (
2009#ifndef SECURE_INTERNAL_GETENV
284167a5 2010 !TAINTING_get &&
f675dbe5 2011#endif
cf756827 2012 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2013 {
74288ac8
GS
2014 while (isSPACE(*s))
2015 s++;
317ea90d 2016 if (*s == '-' && *(s+1) == 'T') {
284167a5
SM
2017#if SILENT_NO_TAINT_SUPPORT
2018 /* silently ignore */
2019#elif NO_TAINT_SUPPORT
3231f579 2020 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2021 "Cowardly refusing to run with -t or -T flags");
2022#else
22f7c9c9 2023 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2024 TAINTING_set(TRUE);
2025 TAINT_WARN_set(FALSE);
2026#endif
317ea90d 2027 }
74288ac8 2028 else {
bd61b366 2029 char *popt_copy = NULL;
74288ac8 2030 while (s && *s) {
54913509 2031 const char *d;
74288ac8
GS
2032 while (isSPACE(*s))
2033 s++;
2034 if (*s == '-') {
2035 s++;
2036 if (isSPACE(*s))
2037 continue;
2038 }
4ea8f8fb 2039 d = s;
74288ac8
GS
2040 if (!*s)
2041 break;
2b622f1a 2042 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2043 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2044 while (++s && *s) {
2045 if (isSPACE(*s)) {
cf756827 2046 if (!popt_copy) {
bfa6c418
NC
2047 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2048 s = popt_copy + (s - d);
2049 d = popt_copy;
cf756827 2050 }
4ea8f8fb
MS
2051 *s++ = '\0';
2052 break;
2053 }
2054 }
1c4db469 2055 if (*d == 't') {
284167a5
SM
2056#if SILENT_NO_TAINT_SUPPORT
2057 /* silently ignore */
2058#elif NO_TAINT_SUPPORT
3231f579 2059 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2060 "Cowardly refusing to run with -t or -T flags");
2061#else
2062 if( !TAINTING_get) {
2063 TAINT_WARN_set(TRUE);
2064 TAINTING_set(TRUE);
317ea90d 2065 }
284167a5 2066#endif
1c4db469 2067 } else {
97bd5664 2068 moreswitches(d);
1c4db469 2069 }
6224f72b 2070 }
6224f72b
GS
2071 }
2072 }
c7030b81 2073 }
a0d0e21e 2074
c29067d7
CH
2075 /* Set $^X early so that it can be used for relocatable paths in @INC */
2076 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2077 assert (!TAINT_get);
c29067d7
CH
2078 TAINT;
2079 S_set_caret_X(aTHX);
2080 TAINT_NOT;
2081
43c0c913 2082#if defined(USE_SITECUSTOMIZE)
20ef40cf 2083 if (!minus_f) {
43c0c913 2084 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2085 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2086 ie a q() operator with a NUL byte as a the delimiter. This avoids
2087 problems with pathnames containing (say) ' */
43c0c913
NC
2088# ifdef PERL_IS_MINIPERL
2089 AV *const inc = GvAV(PL_incgv);
2090 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2091
2092 if (inc0) {
15870c5c
NC
2093 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2094 it should be reported immediately as a build failure. */
43c0c913
NC
2095 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2096 Perl_newSVpvf(aTHX_
15870c5c 2097 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} and do q%c%"SVf"/buildcustomize.pl%c || die $@ }",
fc81b718
NC
2098 0, *inc0, 0,
2099 0, *inc0, 0));
43c0c913
NC
2100 }
2101# else
2102 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2103 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2104 if (raw_sitelib) {
2105 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2106 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2107 INCPUSH_CAN_RELOCATE);
2108 const char *const sitelib = SvPVX(sitelib_sv);
2109 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2110 Perl_newSVpvf(aTHX_
2111 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2112 0, sitelib, 0,
2113 0, sitelib, 0));
2114 assert (SvREFCNT(sitelib_sv) == 1);
2115 SvREFCNT_dec(sitelib_sv);
2116 }
43c0c913 2117# endif
20ef40cf
GA
2118 }
2119#endif
2120
6224f72b
GS
2121 if (!scriptname)
2122 scriptname = argv[0];
3280af22 2123 if (PL_e_script) {
6224f72b
GS
2124 argc++,argv--;
2125 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2126 }
bd61b366 2127 else if (scriptname == NULL) {
6224f72b
GS
2128#ifdef MSDOS
2129 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2130 moreswitches("h");
6224f72b
GS
2131#endif
2132 scriptname = "-";
2133 }
2134
284167a5 2135 assert (!TAINT_get);
2cace6ac 2136 init_perllib();
6224f72b 2137
a52eba0e 2138 {
f20b2998 2139 bool suidscript = FALSE;
829372d3 2140
8d113837 2141 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2142 if (!rsfp) {
2143 rsfp = PerlIO_stdin();
87606032 2144 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2145 }
6224f72b 2146
b24bc095 2147 validate_suid(rsfp);
6224f72b 2148
64ca3a65 2149#ifndef PERL_MICRO
a52eba0e
NC
2150# if defined(SIGCHLD) || defined(SIGCLD)
2151 {
2152# ifndef SIGCHLD
2153# define SIGCHLD SIGCLD
2154# endif
2155 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2156 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2157 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2158 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2159 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2160 }
0b5b802d 2161 }
a52eba0e 2162# endif
64ca3a65 2163#endif
0b5b802d 2164
737c24fc 2165 if (doextract) {
faef540c 2166
f20b2998 2167 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2168 setuid scripts. */
2169 forbid_setid('x', suidscript);
f20b2998 2170 /* Hence you can't get here if suidscript is true */
faef540c 2171
95670bde
NC
2172 linestr_sv = newSV_type(SVt_PV);
2173 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2174 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2175 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2176 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2177 }
f4c556ac 2178 }
6224f72b 2179
ea726b52 2180 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2181 CvUNIQUE_on(PL_compcv);
2182
dd2155a4 2183 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2184
dd69841b
BB
2185 PL_isarev = newHV();
2186
0c4f7ff0 2187 boot_core_PerlIO();
6224f72b 2188 boot_core_UNIVERSAL();
e1a479c5 2189 boot_core_mro();
4a5df386 2190 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2191
2192 if (xsinit)
acfe0abc 2193 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2194#ifndef PERL_MICRO
739a0b84 2195#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2196 init_os_extras();
6224f72b 2197#endif
64ca3a65 2198#endif
6224f72b 2199
29209bc5 2200#ifdef USE_SOCKS
1b9c9cf5
DH
2201# ifdef HAS_SOCKS5_INIT
2202 socks5_init(argv[0]);
2203# else
29209bc5 2204 SOCKSinit(argv[0]);
1b9c9cf5 2205# endif
ac27b0f5 2206#endif
29209bc5 2207
6224f72b
GS
2208 init_predump_symbols();
2209 /* init_postdump_symbols not currently designed to be called */
2210 /* more than once (ENV isn't cleared first, for example) */
2211 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2212 if (!PL_do_undump)
6224f72b
GS
2213 init_postdump_symbols(argc,argv,env);
2214
27da23d5
JH
2215 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2216 * or explicitly in some platforms.
085a54d9 2217 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2218 * look like the user wants to use UTF-8. */
a0fd4948 2219#if defined(__SYMBIAN32__)
27da23d5
JH
2220 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2221#endif
e27b5b51 2222# ifndef PERL_IS_MINIPERL
06e66572
JH
2223 if (PL_unicode) {
2224 /* Requires init_predump_symbols(). */
a05d7ebb 2225 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2226 IO* io;
2227 PerlIO* fp;
2228 SV* sv;
2229
a05d7ebb 2230 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2231 * and the default open disciplines. */
a05d7ebb
JH
2232 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2233 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2234 (fp = IoIFP(io)))
2235 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2236 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2237 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2238 (fp = IoOFP(io)))
2239 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2240 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2241 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2242 (fp = IoOFP(io)))
2243 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2244 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2245 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2246 SVt_PV)))) {
a05d7ebb
JH
2247 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2248 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2249 if (in) {
2250 if (out)
76f68e9b 2251 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2252 else
76f68e9b 2253 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2254 }
2255 else if (out)
76f68e9b 2256 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2257 SvSETMAGIC(sv);
2258 }
b310b053
JH
2259 }
2260 }
e27b5b51 2261#endif
b310b053 2262
c7030b81
NC
2263 {
2264 const char *s;
4ffa73a3
JH
2265 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2266 if (strEQ(s, "unsafe"))
2267 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2268 else if (strEQ(s, "safe"))
2269 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2270 else
2271 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2272 }
c7030b81 2273 }
4ffa73a3 2274
81d86705 2275#ifdef PERL_MAD
c7030b81
NC
2276 {
2277 const char *s;
284167a5 2278 if (!TAINTING_get &&
2cc12391 2279 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC
2280 PL_madskills = 1;
2281 PL_minus_c = 1;
2282 if (!s || !s[0])
2283 PL_xmlfp = PerlIO_stdout();
2284 else {
2285 PL_xmlfp = PerlIO_open(s, "w");
2286 if (!PL_xmlfp)
2287 Perl_croak(aTHX_ "Can't open %s", s);
2288 }
1a9a51d4 2289 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2290 }
c7030b81
NC
2291 }
2292
2293 {
2294 const char *s;
81d86705
NC
2295 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2296 PL_madskills = atoi(s);
1a9a51d4 2297 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2298 }
c7030b81 2299 }
81d86705
NC
2300#endif
2301
87606032 2302 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2303 SvREFCNT_dec(linestr_sv);
95670bde 2304
219f7226 2305 PL_subname = newSVpvs("main");
6224f72b 2306
5486870f
DM
2307 if (add_read_e_script)
2308 filter_add(read_e_script, NULL);
2309
6224f72b
GS
2310 /* now parse the script */
2311
93189314 2312 SETERRNO(0,SS_NORMAL);
28ac2b49 2313 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2314 if (PL_minus_c)
cea2e8a9 2315 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2316 else {
cea2e8a9 2317 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2318 PL_origfilename);
6224f72b
GS
2319 }
2320 }
57843af0 2321 CopLINE_set(PL_curcop, 0);
03d9f026 2322 SET_CURSTASH(PL_defstash);
3280af22
NIS
2323 if (PL_e_script) {
2324 SvREFCNT_dec(PL_e_script);
a0714e2c 2325 PL_e_script = NULL;
6224f72b
GS
2326 }
2327
3280af22 2328 if (PL_do_undump)
6224f72b
GS
2329 my_unexec();
2330
57843af0
GS
2331 if (isWARN_ONCE) {
2332 SAVECOPFILE(PL_curcop);
2333 SAVECOPLINE(PL_curcop);
3280af22 2334 gv_check(PL_defstash);
57843af0 2335 }
6224f72b
GS
2336
2337 LEAVE;
2338 FREETMPS;
2339
2340#ifdef MYMALLOC
f6a607bc
RGS
2341 {
2342 const char *s;
6224f72b
GS
2343 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2344 dump_mstats("after compilation:");
f6a607bc 2345 }
6224f72b
GS
2346#endif
2347
2348 ENTER;
febb3a6d 2349 PL_restartjmpenv = NULL;
3280af22 2350 PL_restartop = 0;
312caa8e 2351 return NULL;
6224f72b
GS
2352}
2353
954c1994
GS
2354/*
2355=for apidoc perl_run
2356
2357Tells a Perl interpreter to run. See L<perlembed>.
2358
2359=cut
2360*/
2361
6224f72b 2362int
0cb96387 2363perl_run(pTHXx)
6224f72b 2364{
97aff369 2365 dVAR;
6224f72b 2366 I32 oldscope;
14dd3ad8 2367 int ret = 0;
db36c5a1 2368 dJMPENV;
6224f72b 2369
7918f24d
NC
2370 PERL_ARGS_ASSERT_PERL_RUN;
2371#ifndef MULTIPLICITY
ed6c66dd 2372 PERL_UNUSED_ARG(my_perl);
7918f24d 2373#endif
9d4ba2ae 2374
3280af22 2375 oldscope = PL_scopestack_ix;
96e176bf
CL
2376#ifdef VMS
2377 VMSISH_HUSHED = 0;
2378#endif
6224f72b 2379
14dd3ad8 2380 JMPENV_PUSH(ret);
6224f72b
GS
2381 switch (ret) {
2382 case 1:
2383 cxstack_ix = -1; /* start context stack again */
312caa8e 2384 goto redo_body;
14dd3ad8 2385 case 0: /* normal completion */
14dd3ad8
GS
2386 redo_body:
2387 run_body(oldscope);
14dd3ad8
GS
2388 /* FALL THROUGH */
2389 case 2: /* my_exit() */
3280af22 2390 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2391 LEAVE;
2392 FREETMPS;
03d9f026 2393 SET_CURSTASH(PL_defstash);
3a1ee7e8 2394 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2395 PL_endav && !PL_minus_c) {
ca7b837b 2396 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2397 call_list(oldscope, PL_endav);
9ebf26ad 2398 }
6224f72b
GS
2399#ifdef MYMALLOC
2400 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2401 dump_mstats("after execution: ");
2402#endif
37038d91 2403 ret = STATUS_EXIT;
14dd3ad8 2404 break;
6224f72b 2405 case 3:
312caa8e
CS
2406 if (PL_restartop) {
2407 POPSTACK_TO(PL_mainstack);
2408 goto redo_body;
6224f72b 2409 }
5637ef5b 2410 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2411 FREETMPS;
14dd3ad8
GS
2412 ret = 1;
2413 break;
6224f72b
GS
2414 }
2415
14dd3ad8
GS
2416 JMPENV_POP;
2417 return ret;
312caa8e
CS
2418}
2419
dd374669 2420STATIC void
14dd3ad8
GS
2421S_run_body(pTHX_ I32 oldscope)
2422{
97aff369 2423 dVAR;
d3b97530
DM
2424 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2425 PL_sawampersand ? "Enabling" : "Omitting",
2426 (unsigned int)(PL_sawampersand)));
6224f72b 2427
3280af22 2428 if (!PL_restartop) {
81d86705
NC
2429#ifdef PERL_MAD
2430 if (PL_xmlfp) {
2431 xmldump_all();
2432 exit(0); /* less likely to core dump than my_exit(0) */
2433 }
2434#endif
cf2782cd 2435#ifdef DEBUGGING
f0e3f042
CS
2436 if (DEBUG_x_TEST || DEBUG_B_TEST)
2437 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2438 if (!DEBUG_q_TEST)
2439 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2440#endif
6224f72b 2441
3280af22 2442 if (PL_minus_c) {
bf49b057 2443 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2444 my_exit(0);
2445 }
3280af22 2446 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2447 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2448 if (PL_initav) {
ca7b837b 2449 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2450 call_list(oldscope, PL_initav);
9ebf26ad 2451 }
f1fac472 2452#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2453 if (PL_main_root && PL_main_root->op_slabbed)
2454 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2455#endif
6224f72b
GS
2456 }
2457
2458 /* do it */
2459
ca7b837b 2460 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2461
3280af22 2462 if (PL_restartop) {
febb3a6d 2463 PL_restartjmpenv = NULL;
533c011a 2464 PL_op = PL_restartop;
3280af22 2465 PL_restartop = 0;
cea2e8a9 2466 CALLRUNOPS(aTHX);
6224f72b 2467 }
3280af22
NIS
2468 else if (PL_main_start) {
2469 CvDEPTH(PL_main_cv) = 1;
533c011a 2470 PL_op = PL_main_start;
cea2e8a9 2471 CALLRUNOPS(aTHX);
6224f72b 2472 }
f6b3007c 2473 my_exit(0);
118e2215 2474 assert(0); /* NOTREACHED */
6224f72b
GS
2475}
2476
954c1994 2477/*
ccfc67b7
JH
2478=head1 SV Manipulation Functions
2479
954c1994
GS
2480=for apidoc p||get_sv
2481
64ace3f8
NC
2482Returns the SV of the specified Perl scalar. C<flags> are passed to
2483C<gv_fetchpv>. If C<GV_ADD> is set and the
2484Perl variable does not exist then it will be created. If C<flags> is zero
2485and the variable does not exist then NULL is returned.
954c1994
GS
2486
2487=cut
2488*/
2489
6224f72b 2490SV*
64ace3f8 2491Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2492{
2493 GV *gv;
7918f24d
NC
2494
2495 PERL_ARGS_ASSERT_GET_SV;
2496
64ace3f8 2497 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2498 if (gv)
2499 return GvSV(gv);
a0714e2c 2500 return NULL;
6224f72b
GS
2501}
2502
954c1994 2503/*
ccfc67b7
JH
2504=head1 Array Manipulation Functions
2505
954c1994
GS
2506=for apidoc p||get_av
2507
f0b90de1
SF
2508Returns the AV of the specified Perl global or package array with the given
2509name (so it won't work on lexical variables). C<flags> are passed
2510to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2511Perl variable does not exist then it will be created. If C<flags> is zero
2512and the variable does not exist then NULL is returned.
954c1994 2513
f0b90de1
SF
2514Perl equivalent: C<@{"$name"}>.
2515
954c1994
GS
2516=cut
2517*/
2518
6224f72b 2519AV*
cbfd0a87 2520Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2521{
cbfd0a87 2522 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2523
2524 PERL_ARGS_ASSERT_GET_AV;
2525
cbfd0a87 2526 if (flags)
6224f72b
GS
2527 return GvAVn(gv);
2528 if (gv)
2529 return GvAV(gv);
7d49f689 2530 return NULL;
6224f72b
GS
2531}
2532
954c1994 2533/*
ccfc67b7
JH
2534=head1 Hash Manipulation Functions
2535
954c1994
GS
2536=for apidoc p||get_hv
2537
6673a63c
NC
2538Returns the HV of the specified Perl hash. C<flags> are passed to
2539C<gv_fetchpv>. If C<GV_ADD> is set and the
2540Perl variable does not exist then it will be created. If C<flags> is zero
2541and the variable does not exist then NULL is returned.
954c1994
GS
2542
2543=cut
2544*/
2545
6224f72b 2546HV*
6673a63c 2547Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2548{
6673a63c 2549 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2550
2551 PERL_ARGS_ASSERT_GET_HV;
2552
6673a63c 2553 if (flags)
a0d0e21e
LW
2554 return GvHVn(gv);
2555 if (gv)
2556 return GvHV(gv);
5c284bb0 2557 return NULL;
a0d0e21e
LW
2558}
2559
954c1994 2560/*
ccfc67b7
JH
2561=head1 CV Manipulation Functions
2562
780a5241
NC
2563=for apidoc p||get_cvn_flags
2564
2565Returns the CV of the specified Perl subroutine. C<flags> are passed to
2566C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2567exist then it will be declared (which has the same effect as saying
2568C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2569then NULL is returned.
2570
954c1994
GS
2571=for apidoc p||get_cv
2572
780a5241 2573Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2574
2575=cut
2576*/
2577
a0d0e21e 2578CV*
780a5241 2579Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2580{
780a5241 2581 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2582
2583 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2584
334dda80
FC
2585 /* XXX this is probably not what they think they're getting.
2586 * It has the same effect as "sub name;", i.e. just a forward
2587 * declaration! */
780a5241 2588 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2589 return newSTUB(gv,0);
780a5241 2590 }
a0d0e21e 2591 if (gv)
8ebc5c01 2592 return GvCVu(gv);
601f1833 2593 return NULL;
a0d0e21e
LW
2594}
2595
2c67934f
NC
2596/* Nothing in core calls this now, but we can't replace it with a macro and
2597 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2598CV*
2599Perl_get_cv(pTHX_ const char *name, I32 flags)
2600{
7918f24d
NC
2601 PERL_ARGS_ASSERT_GET_CV;
2602
780a5241
NC
2603 return get_cvn_flags(name, strlen(name), flags);
2604}
2605
79072805
LW
2606/* Be sure to refetch the stack pointer after calling these routines. */
2607
954c1994 2608/*
ccfc67b7
JH
2609
2610=head1 Callback Functions
2611
954c1994
GS
2612=for apidoc p||call_argv
2613
f0b90de1
SF
2614Performs a callback to the specified named and package-scoped Perl subroutine
2615with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2616
2617Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2618
2619=cut
2620*/
2621
a0d0e21e 2622I32
5aaab254 2623Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2624
8ac85365
NIS
2625 /* See G_* flags in cop.h */
2626 /* null terminated arg list */
8990e307 2627{
97aff369 2628 dVAR;
a0d0e21e 2629 dSP;
8990e307 2630
7918f24d
NC
2631 PERL_ARGS_ASSERT_CALL_ARGV;
2632
924508f0 2633 PUSHMARK(SP);
a0d0e21e 2634 if (argv) {
8990e307 2635 while (*argv) {
6e449a3a 2636 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2637 argv++;
2638 }
a0d0e21e 2639 PUTBACK;
8990e307 2640 }
864dbfa3 2641 return call_pv(sub_name, flags);
8990e307
LW
2642}
2643
954c1994
GS
2644/*
2645=for apidoc p||call_pv
2646
2647Performs a callback to the specified Perl sub. See L<perlcall>.
2648
2649=cut
2650*/
2651
a0d0e21e 2652I32
864dbfa3 2653Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2654 /* name of the subroutine */
2655 /* See G_* flags in cop.h */
a0d0e21e 2656{
7918f24d
NC
2657 PERL_ARGS_ASSERT_CALL_PV;
2658
0da0e728 2659 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2660}
2661
954c1994
GS
2662/*
2663=for apidoc p||call_method
2664
2665Performs a callback to the specified Perl method. The blessed object must
2666be on the stack. See L<perlcall>.
2667
2668=cut
2669*/
2670
a0d0e21e 2671I32
864dbfa3 2672Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2673 /* name of the subroutine */
2674 /* See G_* flags in cop.h */
a0d0e21e 2675{
46ca9bac 2676 STRLEN len;
7918f24d
NC
2677 PERL_ARGS_ASSERT_CALL_METHOD;
2678
46ca9bac 2679 len = strlen(methname);
2680
2681 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2682 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2683}
2684
2685/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2686/*
2687=for apidoc p||call_sv
2688
2689Performs a callback to the Perl sub whose name is in the SV. See
2690L<perlcall>.
2691
2692=cut
2693*/
2694
a0d0e21e 2695I32
001d637e 2696Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2697 /* See G_* flags in cop.h */
a0d0e21e 2698{
27da23d5 2699 dVAR; dSP;
a0d0e21e 2700 LOGOP myop; /* fake syntax tree node */
968b3946 2701 UNOP method_op;
aa689395 2702 I32 oldmark;
8ea43dc8 2703 VOL I32 retval = 0;
a0d0e21e 2704 I32 oldscope;
54310121 2705 bool oldcatch = CATCH_GET;
6224f72b 2706 int ret;
c4420975 2707 OP* const oldop = PL_op;
db36c5a1 2708 dJMPENV;
1e422769 2709
7918f24d
NC
2710 PERL_ARGS_ASSERT_CALL_SV;
2711
a0d0e21e
LW
2712 if (flags & G_DISCARD) {
2713 ENTER;
2714 SAVETMPS;
2715 }
2f8edad0
NC
2716 if (!(flags & G_WANT)) {
2717 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2718 */
2719 flags |= G_SCALAR;
2720 }
a0d0e21e 2721
aa689395 2722 Zero(&myop, 1, LOGOP);
f51d4af5 2723 if (!(flags & G_NOARGS))
aa689395 2724 myop.op_flags |= OPf_STACKED;
4f911530 2725 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2726 SAVEOP();
533c011a 2727 PL_op = (OP*)&myop;
aa689395 2728
3280af22
NIS
2729 EXTEND(PL_stack_sp, 1);
2730 *++PL_stack_sp = sv;
aa689395 2731 oldmark = TOPMARK;
3280af22 2732 oldscope = PL_scopestack_ix;
a0d0e21e 2733
3280af22 2734 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2735 /* Handle first BEGIN of -d. */
3280af22 2736 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2737 /* Try harder, since this may have been a sighandler, thus
2738 * curstash may be meaningless. */
ea726b52 2739 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2740 && !(flags & G_NODEBUG))
5ff48db8 2741 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2742
968b3946
GS
2743 if (flags & G_METHOD) {
2744 Zero(&method_op, 1, UNOP);
5ff48db8 2745 method_op.op_next = (OP*)&myop;
968b3946 2746 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2747 method_op.op_type = OP_METHOD;
968b3946 2748 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2749 myop.op_type = OP_ENTERSUB;
f39d0b86 2750 PL_op = (OP*)&method_op;
968b3946
GS
2751 }
2752
312caa8e 2753 if (!(flags & G_EVAL)) {
0cdb2077 2754 CATCH_SET(TRUE);
d6f07c05 2755 CALL_BODY_SUB((OP*)&myop);
312caa8e 2756 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2757 CATCH_SET(oldcatch);
312caa8e
CS
2758 }
2759 else {
d78bda3d 2760 myop.op_other = (OP*)&myop;
3280af22 2761 PL_markstack_ptr--;
edb2152a 2762 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2763 PL_markstack_ptr++;
a0d0e21e 2764
14dd3ad8 2765 JMPENV_PUSH(ret);
edb2152a 2766
6224f72b
GS
2767 switch (ret) {
2768 case 0:
14dd3ad8 2769 redo_body:
d6f07c05 2770 CALL_BODY_SUB((OP*)&myop);
312caa8e 2771 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2772 if (!(flags & G_KEEPERR)) {
ab69dbc2 2773 CLEAR_ERRSV();
8433848b 2774 }
a0d0e21e 2775 break;
6224f72b 2776 case 1:
f86702cc 2777 STATUS_ALL_FAILURE;
a0d0e21e 2778 /* FALL THROUGH */
6224f72b 2779 case 2:
a0d0e21e 2780 /* my_exit() was called */
03d9f026 2781 SET_CURSTASH(PL_defstash);
a0d0e21e 2782 FREETMPS;
14dd3ad8 2783 JMPENV_POP;
f86702cc 2784 my_exit_jump();
118e2215 2785 assert(0); /* NOTREACHED */
6224f72b 2786 case 3:
3280af22 2787 if (PL_restartop) {
febb3a6d 2788 PL_restartjmpenv = NULL;
533c011a 2789 PL_op = PL_restartop;
3280af22 2790 PL_restartop = 0;
312caa8e 2791 goto redo_body;
a0d0e21e 2792 }
3280af22 2793 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2794 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2795 retval = 0;
2796 else {
2797 retval = 1;
3280af22 2798 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2799 }
312caa8e 2800 break;
a0d0e21e 2801 }
a0d0e21e 2802
edb2152a
NC
2803 if (PL_scopestack_ix > oldscope)
2804 delete_eval_scope();
14dd3ad8 2805 JMPENV_POP;
a0d0e21e 2806 }
1e422769 2807
a0d0e21e 2808 if (flags & G_DISCARD) {
3280af22 2809 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2810 retval = 0;
2811 FREETMPS;
2812 LEAVE;
2813 }
533c011a 2814 PL_op = oldop;
a0d0e21e
LW
2815 return retval;
2816}
2817
6e72f9df 2818/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2819
954c1994
GS
2820/*
2821=for apidoc p||eval_sv
2822
be064c4a
DM
2823Tells Perl to C<eval> the string in the SV. It supports the same flags
2824as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2825
2826=cut
2827*/
2828
a0d0e21e 2829I32
864dbfa3 2830Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2831
8ac85365 2832 /* See G_* flags in cop.h */
a0d0e21e 2833{
97aff369 2834 dVAR;
924508f0 2835 dSP;
a0d0e21e 2836 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2837 VOL I32 oldmark = SP - PL_stack_base;
2838 VOL I32 retval = 0;
6224f72b 2839 int ret;
c4420975 2840 OP* const oldop = PL_op;
db36c5a1 2841 dJMPENV;
84902520 2842
7918f24d
NC
2843 PERL_ARGS_ASSERT_EVAL_SV;
2844
4633a7c4
LW
2845 if (flags & G_DISCARD) {
2846 ENTER;
2847 SAVETMPS;
2848 }
2849
462e5cf6 2850 SAVEOP();
533c011a 2851 PL_op = (OP*)&myop;
5ff48db8 2852 Zero(&myop, 1, UNOP);
3280af22
NIS
2853 EXTEND(PL_stack_sp, 1);
2854 *++PL_stack_sp = sv;
79072805 2855
4633a7c4
LW
2856 if (!(flags & G_NOARGS))
2857 myop.op_flags = OPf_STACKED;
6e72f9df 2858 myop.op_type = OP_ENTEREVAL;
4f911530 2859 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2860 if (flags & G_KEEPERR)
2861 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2862
2863 if (flags & G_RE_REPARSING)
2864 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2865
dedbcade
DM
2866 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2867 * before a PUSHEVAL, which corrupts the stack after a croak */
2868 TAINT_PROPER("eval_sv()");
2869
14dd3ad8 2870 JMPENV_PUSH(ret);
6224f72b
GS
2871 switch (ret) {
2872 case 0:
14dd3ad8 2873 redo_body:
2ba65d5f
DM
2874 if (PL_op == (OP*)(&myop)) {
2875 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2876 if (!PL_op)
2877 goto fail; /* failed in compilation */
2878 }
4aca2f62 2879 CALLRUNOPS(aTHX);
312caa8e 2880 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2881 if (!(flags & G_KEEPERR)) {
ab69dbc2 2882 CLEAR_ERRSV();
8433848b 2883 }
4633a7c4 2884 break;
6224f72b 2885 case 1:
f86702cc 2886 STATUS_ALL_FAILURE;
4633a7c4 2887 /* FALL THROUGH */
6224f72b 2888 case 2:
4633a7c4 2889 /* my_exit() was called */
03d9f026 2890 SET_CURSTASH(PL_defstash);
4633a7c4 2891 FREETMPS;
14dd3ad8 2892 JMPENV_POP;
f86702cc 2893 my_exit_jump();
118e2215 2894 assert(0); /* NOTREACHED */
6224f72b 2895 case 3:
3280af22 2896 if (PL_restartop) {
febb3a6d 2897 PL_restartjmpenv = NULL;
533c011a 2898 PL_op = PL_restartop;
3280af22 2899 PL_restartop = 0;
312caa8e 2900 goto redo_body;
4633a7c4 2901 }
4aca2f62 2902 fail:
3280af22 2903 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2904 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2905 retval = 0;
2906 else {
2907 retval = 1;
3280af22 2908 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2909 }
312caa8e 2910 break;
4633a7c4
LW
2911 }
2912
14dd3ad8 2913 JMPENV_POP;
4633a7c4 2914 if (flags & G_DISCARD) {
3280af22 2915 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2916 retval = 0;
2917 FREETMPS;
2918 LEAVE;
2919 }
533c011a 2920 PL_op = oldop;
4633a7c4
LW
2921 return retval;
2922}
2923
954c1994
GS
2924/*
2925=for apidoc p||eval_pv
2926
2927Tells Perl to C<eval> the given string and return an SV* result.
2928
2929=cut
2930*/
2931
137443ea 2932SV*
864dbfa3 2933Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2934{
97aff369 2935 dVAR;
137443ea
PP
2936 SV* sv = newSVpv(p, 0);
2937
7918f24d
NC
2938 PERL_ARGS_ASSERT_EVAL_PV;
2939
864dbfa3 2940 eval_sv(sv, G_SCALAR);
137443ea
PP
2941 SvREFCNT_dec(sv);
2942
ed1786ad
DD
2943 {
2944 dSP;
2945 sv = POPs;
2946 PUTBACK;
2947 }
137443ea 2948
eed484f9
DD
2949 /* just check empty string or undef? */
2950 if (croak_on_error) {
2951 SV * const errsv = ERRSV;
2952 if(SvTRUE_NN(errsv))
2953 /* replace with croak_sv? */
2954 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2955 }
137443ea
PP
2956
2957 return sv;
2958}
2959
4633a7c4
LW
2960/* Require a module. */
2961
954c1994 2962/*
ccfc67b7
JH
2963=head1 Embedding Functions
2964
954c1994
GS
2965=for apidoc p||require_pv
2966
7d3fb230
BS
2967Tells Perl to C<require> the file named by the string argument. It is
2968analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2969implemented that way; consider using load_module instead.
954c1994 2970
7d3fb230 2971=cut */
954c1994 2972
4633a7c4 2973void
864dbfa3 2974Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2975{
97aff369 2976 dVAR;
d3acc0f7 2977 dSP;
97aff369 2978 SV* sv;
7918f24d
NC
2979
2980 PERL_ARGS_ASSERT_REQUIRE_PV;
2981
e788e7d3 2982 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2983 PUTBACK;
be41e5d9
NC
2984 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2985 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2986 SPAGAIN;
2987 POPSTACK;
79072805
LW
2988}
2989
76e3520e 2990STATIC void
b6f82619 2991S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2992{
ab821d7f 2993 /* This message really ought to be max 23 lines.
75c72d73 2994 * Removed -h because the user already knows that option. Others? */
fb73857a 2995
1566c39d
NC
2996 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2997 minimum of 509 character string literals. */
27da23d5 2998 static const char * const usage_msg[] = {
1566c39d
NC
2999" -0[octal] specify record separator (\\0, if no argument)\n"
3000" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3001" -C[number/list] enables the listed Unicode features\n"
3002" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3003" -d[:debugger] run program under debugger\n"
3004" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3005" -e program one line of program (several -e's allowed, omit programfile)\n"
3006" -E program like -e, but enables all optional features\n"
3007" -f don't do $sitelib/sitecustomize.pl at startup\n"
3008" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3009" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3010" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3011" -l[octal] enable line ending processing, specifies line terminator\n"
3012" -[mM][-]module execute \"use/no module...\" before executing program\n"
3013" -n assume \"while (<>) { ... }\" loop around program\n"
3014" -p assume loop like -n but print line also, like sed\n"
3015" -s enable rudimentary parsing for switches after programfile\n"
3016" -S look for programfile using PATH environment variable\n",
3017" -t enable tainting warnings\n"
3018" -T enable tainting checks\n"
3019" -u dump core after parsing program\n"
3020" -U allow unsafe operations\n"
3021" -v print version, patchlevel and license\n"
3022" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3023" -w enable many useful warnings\n"
1566c39d
NC
3024" -W enable all warnings\n"
3025" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3026" -X disable all warnings\n"
3027" \n"
3028"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3029NULL
3030};
27da23d5 3031 const char * const *p = usage_msg;
1566c39d 3032 PerlIO *out = PerlIO_stdout();
fb73857a 3033
1566c39d
NC
3034 PerlIO_printf(out,
3035 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3036 PL_origargv[0]);
fb73857a 3037 while (*p)
1566c39d 3038 PerlIO_puts(out, *p++);
b6f82619 3039 my_exit(0);
4633a7c4
LW
3040}
3041
b4ab917c
DM
3042/* convert a string of -D options (or digits) into an int.
3043 * sets *s to point to the char after the options */
3044
3045#ifdef DEBUGGING
3046int
e1ec3a88 3047Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3048{
27da23d5 3049 static const char * const usage_msgd[] = {
651b8f1a
NC
3050 " Debugging flag values: (see also -d)\n"
3051 " p Tokenizing and parsing (with v, displays parse stack)\n"
3052 " s Stack snapshots (with v, displays all stacks)\n"
3053 " l Context (loop) stack processing\n"
3054 " t Trace execution\n"
3055 " o Method and overloading resolution\n",
3056 " c String/numeric conversions\n"
3057 " P Print profiling info, source file input state\n"
3058 " m Memory and SV allocation\n"
3059 " f Format processing\n"
3060 " r Regular expression parsing and execution\n"
3061 " x Syntax tree dump\n",
3062 " u Tainting checks\n"
3063 " H Hash dump -- usurps values()\n"
3064 " X Scratchpad allocation\n"
3065 " D Cleaning up\n"
56967202 3066 " S Op slab allocation\n"
651b8f1a
NC
3067 " T Tokenising\n"
3068 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3069 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3070 " v Verbose: use in conjunction with other flags\n"
3071 " C Copy On Write\n"
3072 " A Consistency checks on internal structures\n"
3073 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3074 " M trace smart match resolution\n"
3075 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3076 NULL
3077 };
b4ab917c 3078 int i = 0;
7918f24d
NC
3079
3080 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3081
b4ab917c
DM
3082 if (isALPHA(**s)) {
3083 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3084 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c 3085
0eb30aeb 3086 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3087 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3088 if (d)
3089 i |= 1 << (d - debopts);
3090 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3091 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3092 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3093 }
3094 }
e6e64d9b 3095 else if (isDIGIT(**s)) {
b4ab917c 3096 i = atoi(*s);
0eb30aeb 3097 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3098 }
ddcf8bc1 3099 else if (givehelp) {
06e869a4 3100 const char *const *p = usage_msgd;
651b8f1a 3101 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3102 }
b4ab917c
DM
3103# ifdef EBCDIC
3104 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3105 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3106 "-Dp not implemented on this platform\n");
3107# endif
3108 return i;
3109}
3110#endif
3111
79072805
LW
3112/* This routine handles any switches that can be given during run */
3113
c7030b81
NC
3114const char *
3115Perl_moreswitches(pTHX_ const char *s)
79072805 3116{
27da23d5 3117 dVAR;
84c133a0 3118 UV rschar;
0544e6df 3119 const char option = *s; /* used to remember option in -m/-M code */
79072805 3120
7918f24d
NC
3121 PERL_ARGS_ASSERT_MORESWITCHES;
3122
79072805
LW
3123 switch (*s) {
3124 case '0':
a863c7d1 3125 {
f2095865 3126 I32 flags = 0;
a3b680e6 3127 STRLEN numlen;
f2095865
JH
3128
3129 SvREFCNT_dec(PL_rs);
3130 if (s[1] == 'x' && s[2]) {
a3b680e6 3131 const char *e = s+=2;
f2095865
JH
3132 U8 *tmps;
3133
a3b680e6
AL
3134 while (*e)
3135 e++;
f2095865
JH
3136 numlen = e - s;
3137 flags = PERL_SCAN_SILENT_ILLDIGIT;
3138 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3139 if (s + numlen < e) {
3140 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3141 numlen = 0;
3142 s--;
3143 }
396482e1 3144 PL_rs = newSVpvs("");
c5661c80 3145 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3146 tmps = (U8*)SvPVX(PL_rs);
3147 uvchr_to_utf8(tmps, rschar);
3148 SvCUR_set(PL_rs, UNISKIP(rschar));
3149 SvUTF8_on(PL_rs);
3150 }
3151 else {
3152 numlen = 4;
3153 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3154 if (rschar & ~((U8)~0))
3155 PL_rs = &PL_sv_undef;
3156 else if (!rschar && numlen >= 2)
396482e1 3157 PL_rs = newSVpvs("");
f2095865
JH
3158 else {
3159 char ch = (char)rschar;
3160 PL_rs = newSVpvn(&ch, 1);
3161 }
3162 }
64ace3f8 3163 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3164 return s + numlen;
a863c7d1 3165 }
46487f74 3166 case 'C':
a05d7ebb 3167 s++;
dd374669 3168 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3169 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3170 PL_utf8cache = -1;
46487f74 3171 return s;
2304df62 3172 case 'F':
3280af22 3173 PL_minus_F = TRUE;
ebce5377
RGS
3174 PL_splitstr = ++s;
3175 while (*s && !isSPACE(*s)) ++s;
e49e380e 3176 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3177 return s;
79072805 3178 case 'a':
3280af22 3179 PL_minus_a = TRUE;
79072805
LW
3180 s++;
3181 return s;
3182 case 'c':
3280af22 3183 PL_minus_c = TRUE;
79072805
LW
3184 s++;
3185 return s;
3186 case 'd':
f20b2998 3187 forbid_setid('d', FALSE);
4633a7c4 3188 s++;
2cbb2ee1
RGS
3189
3190 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3191 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3192 ++s;
3193 my_setenv("PERL5DB_THREADED", "1");
3194 }
3195
70c94a19
RR
3196 /* The following permits -d:Mod to accepts arguments following an =
3197 in the fashion that -MSome::Mod does. */
3198 if (*s == ':' || *s == '=') {
b19934fb
NC
3199 const char *start;
3200 const char *end;
3201 SV *sv;
3202
3203 if (*++s == '-') {
3204 ++s;
3205 sv = newSVpvs("no Devel::");
3206 } else {
3207 sv = newSVpvs("use Devel::");
3208 }
3209
3210 start = s;
3211 end = s + strlen(s);
f85893a1 3212
b19934fb 3213 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3214 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3215 if (*s != '=')
f85893a1 3216 sv_catpvn(sv, start, end - start);
70c94a19
RR
3217 else {
3218 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3219 /* Don't use NUL as q// delimiter here, this string goes in the
3220 * environment. */
3221 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3222 }
f85893a1 3223 s = end;
184f32ec 3224 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3225 SvREFCNT_dec(sv);
4633a7c4 3226 }
ed094faf 3227 if (!PL_perldb) {
3280af22 3228 PL_perldb = PERLDB_ALL;
a0d0e21e 3229 init_debugger();
ed094faf 3230 }
79072805
LW
3231 return s;
3232 case 'D':
0453d815 3233 {
79072805 3234#ifdef DEBUGGING
f20b2998 3235 forbid_setid('D', FALSE);
b4ab917c 3236 s++;
dd374669 3237 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3238#else /* !DEBUGGING */
0453d815 3239 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3240 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3241 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3242 for (s++; isWORDCHAR(*s); s++) ;
79072805 3243#endif
79072805 3244 return s;
0453d815 3245 }
4633a7c4 3246 case 'h':
b6f82619 3247 usage();
79072805 3248 case 'i':
43c5f42d 3249 Safefree(PL_inplace);
c030f24b
GH
3250#if defined(__CYGWIN__) /* do backup extension automagically */
3251 if (*(s+1) == '\0') {
c86a4f2e 3252 PL_inplace = savepvs(".bak");
c030f24b
GH
3253 return s+1;
3254 }
3255#endif /* __CYGWIN__ */
5ef5d758 3256 {
d4c19fe8 3257 const char * const start = ++s;
5ef5d758
NC
3258 while (*s && !isSPACE(*s))
3259 ++s;
3260
3261 PL_inplace = savepvn(start, s - start);
3262 }
7b8d334a 3263 if (*s) {
5ef5d758 3264 ++s;
7b8d334a 3265 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3266 s++;
7b8d334a 3267 }
fb73857a 3268 return s;
4e49a025 3269 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3270 forbid_setid('I', FALSE);
fb73857a
PP
3271 ++s;
3272 while (*s && isSPACE(*s))
3273 ++s;
3274 if (*s) {
c7030b81 3275 const char *e, *p;
0df16ed7
GS
3276 p = s;
3277 /* ignore trailing spaces (possibly followed by other switches) */
3278 do {
3279 for (e = p; *e && !isSPACE(*e); e++) ;
3280 p = e;
3281 while (isSPACE(*p))
3282 p++;
3283 } while (*p && *p != '-');
55b4bc1c 3284 incpush(s, e-s,
e28f3139 3285 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3286 s = p;
3287 if (*s == '-')
3288 s++;
79072805
LW
3289 }
3290 else
a67e862a 3291 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3292 return s;
79072805 3293 case 'l':
3280af22 3294 PL_minus_l = TRUE;
79072805 3295 s++;
7889fe52
NIS
3296 if (PL_ors_sv) {
3297 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3298 PL_ors_sv = NULL;
7889fe52 3299 }
79072805 3300 if (isDIGIT(*s)) {
53305cf1 3301 I32 flags = 0;
a3b680e6 3302 STRLEN numlen;
396482e1 3303 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3304 numlen = 3 + (*s == '0');
3305 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3306 s += numlen;
3307 }
3308 else {
8bfdd7d9 3309 if (RsPARA(PL_rs)) {
396482e1 3310 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3311 }
3312 else {
8bfdd7d9 3313 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3314 }
79072805
LW
3315 }
3316 return s;
1a30305b 3317 case 'M':
f20b2998 3318 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3319 /* FALL THROUGH */
3320 case 'm':
f20b2998 3321 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3322 if (*++s) {
c7030b81 3323 const char *start;
b64cb68c 3324 const char *end;
11343788 3325 SV *sv;
e1ec3a88 3326 const char *use = "use ";
0544e6df 3327 bool colon = FALSE;
a5f75d66 3328 /* -M-foo == 'no foo' */
d0043bd1
NC
3329 /* Leading space on " no " is deliberate, to make both
3330 possibilities the same length. */
3331 if (*s == '-') { use = " no "; ++s; }
3332 sv = newSVpvn(use,4);
a5f75d66 3333 start = s;
1a30305b 3334 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3335 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3336 if( *s++ == ':' ) {
3337 if( *s == ':' )
3338 s++;
3339 else
3340 colon = TRUE;
3341 }
3342 }
3343 if (s == start)
3344 Perl_croak(aTHX_ "Module name required with -%c option",
3345 option);
3346 if (colon)
3347 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3348 "contains single ':'",
63da6837 3349 (int)(s - start), start, option);
b64cb68c 3350 end = s + strlen(s);
c07a80fd 3351 if (*s != '=') {
b64cb68c 3352 sv_catpvn(sv, start, end - start);
0544e6df 3353 if (option == 'm') {
c07a80fd 3354 if (*s != '\0')
cea2e8a9 3355 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3356 sv_catpvs( sv, " ()");
c07a80fd
PP
3357 }
3358 } else {
11343788 3359 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3360 /* Use NUL as q''-delimiter. */
3361 sv_catpvs(sv, " split(/,/,q\0");
3362 ++s;
3363 sv_catpvn(sv, s, end - s);
396482e1 3364 sv_catpvs(sv, "\0)");
c07a80fd 3365 }
b64cb68c 3366 s = end;
29a861e7 3367 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3368 }
3369 else
0544e6df 3370 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3371 return s;
79072805 3372 case 'n':
3280af22 3373 PL_minus_n = TRUE;
79072805
LW
3374 s++;
3375 return s;
3376 case 'p':
3280af22 3377 PL_minus_p = TRUE;
79072805
LW
3378 s++;
3379 return s;
3380 case 's':
f20b2998 3381 forbid_setid('s', FALSE);
3280af22 3382 PL_doswitches = TRUE;
79072805
LW
3383 s++;
3384 return s;
6537fe72 3385 case 't':
27a6968b 3386 case 'T':
284167a5
SM
3387#if SILENT_NO_TAINT_SUPPORT
3388 /* silently ignore */
3389#elif NO_TAINT_SUPPORT
3231f579 3390 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3391 "Cowardly refusing to run with -t or -T flags");
3392#else
3393 if (!TAINTING_get)
27a6968b 3394 TOO_LATE_FOR(*s);
284167a5 3395#endif
6537fe72 3396 s++;
463ee0b2 3397 return s;
79072805 3398 case 'u':
3280af22 3399 PL_do_undump = TRUE;
79072805
LW
3400 s++;
3401 return s;
3402 case 'U':
3280af22 3403 PL_unsafe = TRUE;
79072805
LW
3404 s++;
3405 return s;
3406 case 'v':
c4bc78d9
NC
3407 minus_v();
3408 case 'w':
3409 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3410 PL_dowarn |= G_WARN_ON;
3411 }
3412 s++;
3413 return s;
3414 case 'W':
3415 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3416 if (!specialWARN(PL_compiling.cop_warnings))
3417 PerlMemShared_free(PL_compiling.cop_warnings);
3418 PL_compiling.cop_warnings = pWARN_ALL ;
3419 s++;
3420 return s;
3421 case 'X':
3422 PL_dowarn = G_WARN_ALL_OFF;
3423 if (!specialWARN(PL_compiling.cop_warnings))
3424 PerlMemShared_free(PL_compiling.cop_warnings);
3425 PL_compiling.cop_warnings = pWARN_NONE ;
3426 s++;
3427 return s;
3428 case '*':
3429 case ' ':
3430 while( *s == ' ' )
3431 ++s;
3432 if (s[0] == '-') /* Additional switches on #! line. */
3433 return s+1;
3434 break;
3435 case '-':
3436 case 0:
3437#if defined(WIN32) || !defined(PERL_STRICT_CR)
3438 case '\r':
3439#endif
3440 case '\n':
3441 case '\t':
3442 break;
3443#ifdef ALTERNATE_SHEBANG
3444 case 'S': /* OS/2 needs -S on "extproc" line. */
3445 break;
3446#endif
4bb78d63
CB
3447 case 'e': case 'f': case 'x': case 'E':
3448#ifndef ALTERNATE_SHEBANG
3449 case 'S':
3450#endif
3451 case 'V':
c4bc78d9 3452 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3453 default:
3454 Perl_croak(aTHX_
3455 "Unrecognized switch: -%.1s (-h will show valid options)",s
3456 );
c4bc78d9
NC
3457 }
3458 return NULL;
3459}
3460
3461
3462STATIC void
3463S_minus_v(pTHX)
3464{
fc3381af 3465 PerlIO * PIO_stdout;
d7aa5382 3466 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3467 upg_version(PL_patchlevel, TRUE);
46807d8e
YO
3468 {
3469 SV* level= vstringify(PL_patchlevel);
3470#ifdef PERL_PATCHNUM
23d483e2
NC
3471# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3472 SV *num = newSVpvs(PERL_PATCHNUM "*");
3473# else
3474 SV *num = newSVpvs(PERL_PATCHNUM);
3475# endif
fc3381af
DD
3476 {
3477 STRLEN level_len, num_len;
3478 char * level_str, * num_str;
3479 num_str = SvPV(num, num_len);
3480 level_str = SvPV(level, level_len);
3481 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3482 SvREFCNT_dec(level);
3483 level= num;
3484 } else {
3485 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3486 SvREFCNT_dec(num);
3487 }
46807d8e
YO
3488 }
3489 #endif
fc3381af
DD
3490 PIO_stdout = PerlIO_stdout();
3491 PerlIO_printf(PIO_stdout,
ded326e4
DG
3492 "\nThis is perl " STRINGIFY(PERL_REVISION)
3493 ", version " STRINGIFY(PERL_VERSION)
3494 ", subversion " STRINGIFY(PERL_SUBVERSION)
3495 " (%"SVf") built for " ARCHNAME, level
3496 );
46807d8e
YO
3497 SvREFCNT_dec(level);
3498 }
fb73857a
PP
3499#if defined(LOCAL_PATCH_COUNT)
3500 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3501 PerlIO_printf(PIO_stdout,
b0e47665
GS
3502 "\n(with %d registered patch%s, "
3503 "see perl -V for more detail)",
bb7a0f54 3504 LOCAL_PATCH_COUNT,
b0e47665 3505 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3506#endif
1a30305b 3507
fc3381af 3508 PerlIO_printf(PIO_stdout,
d907e2e9 3509 "\n\nCopyright 1987-2013, Larry Wall\n");
79072805 3510#ifdef MSDOS
fc3381af 3511 PerlIO_printf(PIO_stdout,
b0e47665 3512 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3513#endif
3514#ifdef DJGPP
fc3381af 3515 PerlIO_printf(PIO_stdout,
b0e47665
GS
3516 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3517 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3518#endif
79072805 3519#ifdef OS2
fc3381af 3520 PerlIO_printf(PIO_stdout,
b0e47665 3521 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3522 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3523#endif
9d116dd7 3524#ifdef OEMVS
fc3381af 3525 PerlIO_printf(PIO_stdout,
b0e47665 3526 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");