This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Make PL_firstgv and PL_secondgv refcounted
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
LW
2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
39#endif
40
2982a345
NC
41#ifdef USE_KERN_PROC_PATHNAME
42# include <sys/sysctl.h>
43#endif
44
ae60cb46
NC
45#ifdef USE_NSGETEXECUTABLEPATH
46# include <mach-o/dyld.h>
47#endif
48
2aa47728 49#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
50# ifdef I_SYSUIO
51# include <sys/uio.h>
52# endif
53
54union control_un {
55 struct cmsghdr cm;
56 char control[CMSG_SPACE(sizeof(int))];
57};
58
2aa47728
NC
59#endif
60
5311654c
JH
61#ifndef HZ
62# ifdef CLK_TCK
63# define HZ CLK_TCK
64# else
65# define HZ 60
66# endif
67#endif
68
7114a2d2 69#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 70char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
71#endif
72
acfe0abc 73static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 74
cc69b689 75#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 76# define validate_suid(rsfp) NOOP
cc69b689 77#else
b24bc095 78# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 79#endif
8d063cd8 80
d6f07c05
AL
81#define CALL_BODY_SUB(myop) \
82 if (PL_op == (myop)) \
139d0ce6 83 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
84 if (PL_op) \
85 CALLRUNOPS(aTHX);
86
87#define CALL_LIST_BODY(cv) \
88 PUSHMARK(PL_stack_sp); \
9a8aa25b 89 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 90
e6827a76 91static void
daa7d858 92S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 93{
27da23d5 94 dVAR;
e6827a76
NC
95 if (!PL_curinterp) {
96 PERL_SET_INTERP(my_perl);
3db8f154 97#if defined(USE_ITHREADS)
e6827a76
NC
98 INIT_THREADS;
99 ALLOC_THREAD_KEY;
100 PERL_SET_THX(my_perl);
101 OP_REFCNT_INIT;
e8570548 102 OP_CHECK_MUTEX_INIT;
71ad1b0c 103 HINTS_REFCNT_INIT;
e6827a76 104 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
105 MUTEX_INIT(&PL_my_ctx_mutex);
106# endif
e6827a76 107 }
c0bce9aa
NC
108#if defined(USE_ITHREADS)
109 else
110#else
111 /* This always happens for non-ithreads */
112#endif
113 {
e6827a76
NC
114 PERL_SET_THX(my_perl);
115 }
116}
06d86050 117
cbec8ebe
DM
118
119/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
120
121void
122Perl_sys_init(int* argc, char*** argv)
123{
4fc0badb 124 dVAR;
7918f24d
NC
125
126 PERL_ARGS_ASSERT_SYS_INIT;
127
cbec8ebe
DM
128 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
129 PERL_UNUSED_ARG(argv);
130 PERL_SYS_INIT_BODY(argc, argv);
131}
132
133void
134Perl_sys_init3(int* argc, char*** argv, char*** env)
135{
4fc0badb 136 dVAR;
7918f24d
NC
137
138 PERL_ARGS_ASSERT_SYS_INIT3;
139
cbec8ebe
DM
140 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
141 PERL_UNUSED_ARG(argv);
142 PERL_UNUSED_ARG(env);
143 PERL_SYS_INIT3_BODY(argc, argv, env);
144}
145
146void
d0820ef1 147Perl_sys_term()
cbec8ebe 148{
4fc0badb 149 dVAR;
bf81751b
DM
150 if (!PL_veto_cleanup) {
151 PERL_SYS_TERM_BODY();
152 }
cbec8ebe
DM
153}
154
155
32e30700
GS
156#ifdef PERL_IMPLICIT_SYS
157PerlInterpreter *
7766f137
GS
158perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
159 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
160 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
161 struct IPerlDir* ipD, struct IPerlSock* ipS,
162 struct IPerlProc* ipP)
163{
164 PerlInterpreter *my_perl;
7918f24d
NC
165
166 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
167
9f653bb5 168 /* Newx() needs interpreter, so call malloc() instead */
32e30700 169 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 170 S_init_tls_and_interp(my_perl);
32e30700
GS
171 Zero(my_perl, 1, PerlInterpreter);
172 PL_Mem = ipM;
7766f137
GS
173 PL_MemShared = ipMS;
174 PL_MemParse = ipMP;
32e30700
GS
175 PL_Env = ipE;
176 PL_StdIO = ipStd;
177 PL_LIO = ipLIO;
178 PL_Dir = ipD;
179 PL_Sock = ipS;
180 PL_Proc = ipP;
7cb608b5 181 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 182
32e30700
GS
183 return my_perl;
184}
185#else
954c1994
GS
186
187/*
ccfc67b7
JH
188=head1 Embedding Functions
189
954c1994
GS
190=for apidoc perl_alloc
191
192Allocates a new Perl interpreter. See L<perlembed>.
193
194=cut
195*/
196
93a17b20 197PerlInterpreter *
cea2e8a9 198perl_alloc(void)
79072805 199{
cea2e8a9 200 PerlInterpreter *my_perl;
79072805 201
9f653bb5 202 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 203 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 204
e6827a76 205 S_init_tls_and_interp(my_perl);
7cb608b5 206#ifndef PERL_TRACK_MEMPOOL
07409e01 207 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
208#else
209 Zero(my_perl, 1, PerlInterpreter);
210 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
211 return my_perl;
212#endif
79072805 213}
32e30700 214#endif /* PERL_IMPLICIT_SYS */
79072805 215
954c1994
GS
216/*
217=for apidoc perl_construct
218
219Initializes a new Perl interpreter. See L<perlembed>.
220
221=cut
222*/
223
79072805 224void
0cb96387 225perl_construct(pTHXx)
79072805 226{
27da23d5 227 dVAR;
7918f24d
NC
228
229 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
230
8990e307 231#ifdef MULTIPLICITY
54aff467 232 init_interp();
ac27b0f5 233 PL_perl_destruct_level = 1;
54aff467 234#else
7918f24d 235 PERL_UNUSED_ARG(my_perl);
54aff467
GS
236 if (PL_perl_destruct_level > 0)
237 init_interp();
238#endif
34caed6d
DM
239 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
240
75d476e2
SM
241#ifdef PERL_TRACE_OPS
242 Zero(PL_op_exec_cnt, OP_max+2, UV);
243#endif
244
0d96b528 245 init_constants();
34caed6d
DM
246
247 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 248 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
249
250 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 251#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 252 PL_pidstatus = newHV();
ca0c25f6 253#endif
79072805 254
396482e1 255 PL_rs = newSVpvs("\n");
dc92893f 256
cea2e8a9 257 init_stacks();
79072805 258
748a9306 259 init_ids();
a5f75d66 260
312caa8e 261 JMPENV_BOOTSTRAP;
f86702cc
PP
262 STATUS_ALL_SUCCESS;
263
0672f40e 264 init_i18nl10n(1);
36477c24 265 SET_NUMERIC_STANDARD();
0b5b802d 266
ab821d7f 267#if defined(LOCAL_PATCH_COUNT)
3280af22 268 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
269#endif
270
52853b95
GS
271#ifdef HAVE_INTERP_INTERN
272 sys_intern_init();
273#endif
274
3a1ee7e8 275 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 276
3280af22
NIS
277 PL_fdpid = newAV(); /* for remembering popen pids by fd */
278 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 279 PL_errors = newSVpvs("");
76f68e9b
MHM
280 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
281 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
282 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 283#ifdef USE_ITHREADS
402d2eb1
NC
284 /* First entry is a list of empty elements. It needs to be initialised
285 else all hell breaks loose in S_find_uninit_var(). */
286 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 287 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 288 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 289#endif
e5dd39fc 290#ifdef USE_REENTRANT_API
59bd0823 291 Perl_reentrant_init(aTHX);
e5dd39fc 292#endif
7dc86639
YO
293#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
294 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
295 * This MUST be done before any hash stores or fetches take place.
296 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
297 * yourself, it is your responsibility to provide a good random seed!
298 * You can also define PERL_HASH_SEED in compile time, see hv.h.
299 *
300 * XXX: fix this comment */
301 if (PL_hash_seed_set == FALSE) {
302 Perl_get_hash_seed(aTHX_ PL_hash_seed);
303 PL_hash_seed_set= TRUE;
304 }
305#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
306
307 /* Note that strtab is a rather special HV. Assumptions are made
308 about not iterating on it, and not adding tie magic to it.
309 It is properly deallocated in perl_destruct() */
310 PL_strtab = newHV();
311
3d47000e
AB
312 HvSHAREKEYS_off(PL_strtab); /* mandatory */
313 hv_ksplit(PL_strtab, 512);
314
a38ab475
RZ
315 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
316
0631ea03
AB
317#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
318 _dyld_lookup_and_bind
319 ("__environ", (unsigned long *) &environ_pointer, NULL);
320#endif /* environ */
321
2f42fcb0
JH
322#ifndef PERL_MICRO
323# ifdef USE_ENVIRON_ARRAY
0631ea03 324 PL_origenviron = environ;
2f42fcb0 325# endif
0631ea03
AB
326#endif
327
5311654c 328 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 329 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
330 * The HZ if not originally defined has been by now
331 * been defined as CLK_TCK, if available. */
b6c36746 332#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
333 PL_clocktick = sysconf(_SC_CLK_TCK);
334 if (PL_clocktick <= 0)
335#endif
336 PL_clocktick = HZ;
337
081fc587
AB
338 PL_stashcache = newHV();
339
e8e3635e 340 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 341 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 342
27da23d5
JH
343#ifdef HAS_MMAP
344 if (!PL_mmap_page_size) {
345#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
346 {
347 SETERRNO(0, SS_NORMAL);
348# ifdef _SC_PAGESIZE
349 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
350# else
351 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
352# endif
353 if ((long) PL_mmap_page_size < 0) {
354 if (errno) {
44f8325f 355 SV * const error = ERRSV;
d4c19fe8 356 SvUPGRADE(error, SVt_PV);
0510663f 357 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
358 }
359 else
360 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
361 }
362 }
363#else
364# ifdef HAS_GETPAGESIZE
365 PL_mmap_page_size = getpagesize();
366# else
367# if defined(I_SYS_PARAM) && defined(PAGESIZE)
368 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
369# endif
370# endif
371#endif
372 if (PL_mmap_page_size <= 0)
373 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
374 (IV) PL_mmap_page_size);
375 }
376#endif /* HAS_MMAP */
377
378#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
379 PL_timesbase.tms_utime = 0;
380 PL_timesbase.tms_stime = 0;
381 PL_timesbase.tms_cutime = 0;
382 PL_timesbase.tms_cstime = 0;
383#endif
384
7d113631
NC
385 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
386
a3e6e81e 387 PL_registered_mros = newHV();
9e169432
NC
388 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
389 HvMAX(PL_registered_mros) = 0;
a3e6e81e 390
8990e307 391 ENTER;
79072805
LW
392}
393
954c1994 394/*
62375a60
NIS
395=for apidoc nothreadhook
396
397Stub that provides thread hook for perl_destruct when there are
398no threads.
399
400=cut
401*/
402
403int
4e9e3734 404Perl_nothreadhook(pTHX)
62375a60 405{
96a5add6 406 PERL_UNUSED_CONTEXT;
62375a60
NIS
407 return 0;
408}
409
41e4abd8
NC
410#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
411void
412Perl_dump_sv_child(pTHX_ SV *sv)
413{
414 ssize_t got;
bf357333
NC
415 const int sock = PL_dumper_fd;
416 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
417 union control_un control;
418 struct msghdr msg;
808ad2d0 419 struct iovec vec[2];
bf357333 420 struct cmsghdr *cmptr;
808ad2d0
NC
421 int returned_errno;
422 unsigned char buffer[256];
41e4abd8 423
7918f24d
NC
424 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
425
bf357333 426 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
427 return;
428
429 PerlIO_flush(Perl_debug_log);
430
bf357333
NC
431 /* All these shenanigans are to pass a file descriptor over to our child for
432 it to dump out to. We can't let it hold open the file descriptor when it
433 forks, as the file descriptor it will dump to can turn out to be one end
434 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 435 be open, the wait would be forever.) */
bf357333
NC
436
437 msg.msg_control = control.control;
438 msg.msg_controllen = sizeof(control.control);
439 /* We're a connected socket so we don't need a destination */
440 msg.msg_name = NULL;
441 msg.msg_namelen = 0;
442 msg.msg_iov = vec;
808ad2d0 443 msg.msg_iovlen = 1;
bf357333
NC
444
445 cmptr = CMSG_FIRSTHDR(&msg);
446 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
447 cmptr->cmsg_level = SOL_SOCKET;
448 cmptr->cmsg_type = SCM_RIGHTS;
449 *((int *)CMSG_DATA(cmptr)) = 1;
450
451 vec[0].iov_base = (void*)&sv;
452 vec[0].iov_len = sizeof(sv);
453 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
454
455 if(got < 0) {
bf357333 456 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
457 abort();
458 }
bf357333
NC
459 if(got < sizeof(sv)) {
460 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
461 abort();
462 }
463
808ad2d0
NC
464 /* Return protocol is
465 int: errno value
466 unsigned char: length of location string (0 for empty)
467 unsigned char*: string (not terminated)
468 */
469 vec[0].iov_base = (void*)&returned_errno;
470 vec[0].iov_len = sizeof(returned_errno);
471 vec[1].iov_base = buffer;
472 vec[1].iov_len = 1;
473
474 got = readv(sock, vec, 2);
41e4abd8
NC
475
476 if(got < 0) {
477 perror("Debug leaking scalars parent read failed");
808ad2d0 478 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
479 abort();
480 }
808ad2d0 481 if(got < sizeof(returned_errno) + 1) {
41e4abd8 482 perror("Debug leaking scalars parent short read");
808ad2d0 483 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
484 abort();
485 }
486
808ad2d0
NC
487 if (*buffer) {
488 got = read(sock, buffer + 1, *buffer);
489 if(got < 0) {
490 perror("Debug leaking scalars parent read 2 failed");
491 PerlIO_flush(PerlIO_stderr());
492 abort();
493 }
494
495 if(got < *buffer) {
496 perror("Debug leaking scalars parent short read 2");
497 PerlIO_flush(PerlIO_stderr());
498 abort();
499 }
500 }
501
502 if (returned_errno || *buffer) {
503 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
504 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 505 returned_errno, Strerror(returned_errno));
41e4abd8
NC
506 }
507}
508#endif
509
62375a60 510/*
954c1994
GS
511=for apidoc perl_destruct
512
513Shuts down a Perl interpreter. See L<perlembed>.
514
515=cut
516*/
517
31d77e54 518int
0cb96387 519perl_destruct(pTHXx)
79072805 520{
27da23d5 521 dVAR;
be2ea8ed 522 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 523 HV *hv;
2aa47728 524#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
525 pid_t child;
526#endif
9c0b6888 527 int i;
8990e307 528
7918f24d
NC
529 PERL_ARGS_ASSERT_PERL_DESTRUCT;
530#ifndef MULTIPLICITY
ed6c66dd 531 PERL_UNUSED_ARG(my_perl);
7918f24d 532#endif
9d4ba2ae 533
3d22c4f0
GG
534 assert(PL_scopestack_ix == 1);
535
7766f137
GS
536 /* wait for all pseudo-forked children to finish */
537 PERL_WAIT_FOR_CHILDREN;
538
3280af22 539 destruct_level = PL_perl_destruct_level;
36e77d41 540#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 541 {
9d4ba2ae
AL
542 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
543 if (s) {
36e77d41
DD
544 const int i = atoi(s);
545#ifdef DEBUGGING
546 if (destruct_level < i) destruct_level = i;
547#endif
548#ifdef PERL_TRACK_MEMPOOL
549 /* RT #114496, for perl_free */
550 PL_perl_destruct_level = i;
551#endif
5f05dabc 552 }
4633a7c4
LW
553 }
554#endif
555
27da23d5 556 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
557 dJMPENV;
558 int x = 0;
559
560 JMPENV_PUSH(x);
1b6737cc 561 PERL_UNUSED_VAR(x);
9ebf26ad 562 if (PL_endav && !PL_minus_c) {
ca7b837b 563 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 564 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 565 }
f3faeb53 566 JMPENV_POP;
26f423df 567 }
f3faeb53 568 LEAVE;
a0d0e21e 569 FREETMPS;
3d22c4f0 570 assert(PL_scopestack_ix == 0);
a0d0e21e 571
e00b64d4 572 /* Need to flush since END blocks can produce output */
f13a2bc0 573 my_fflush_all();
e00b64d4 574
75d476e2
SM
575#ifdef PERL_TRACE_OPS
576 /* If we traced all Perl OP usage, report and clean up */
577 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
578 for (i = 0; i <= OP_max; ++i) {
579 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
580 PL_op_exec_cnt[i] = 0;
581 }
582 /* Utility slot for easily doing little tracing experiments in the runloop: */
583 if (PL_op_exec_cnt[OP_max+1] != 0)
584 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
585 PerlIO_printf(Perl_debug_log, "\n");
586#endif
587
588
16c91539 589 if (PL_threadhook(aTHX)) {
62375a60 590 /* Threads hook has vetoed further cleanup */
c301d606 591 PL_veto_cleanup = TRUE;
37038d91 592 return STATUS_EXIT;
62375a60
NIS
593 }
594
2aa47728
NC
595#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
596 if (destruct_level != 0) {
597 /* Fork here to create a child. Our child's job is to preserve the
598 state of scalars prior to destruction, so that we can instruct it
599 to dump any scalars that we later find have leaked.
600 There's no subtlety in this code - it assumes POSIX, and it doesn't
601 fail gracefully */
602 int fd[2];
603
604 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
605 perror("Debug leaking scalars socketpair failed");
606 abort();
607 }
608
609 child = fork();
610 if(child == -1) {
611 perror("Debug leaking scalars fork failed");
612 abort();
613 }
614 if (!child) {
615 /* We are the child */
3125a5a4
NC
616 const int sock = fd[1];
617 const int debug_fd = PerlIO_fileno(Perl_debug_log);
618 int f;
808ad2d0
NC
619 const char *where;
620 /* Our success message is an integer 0, and a char 0 */
b61433a9 621 static const char success[sizeof(int) + 1] = {0};
3125a5a4 622
2aa47728 623 close(fd[0]);
2aa47728 624
3125a5a4
NC
625 /* We need to close all other file descriptors otherwise we end up
626 with interesting hangs, where the parent closes its end of a
627 pipe, and sits waiting for (another) child to terminate. Only
628 that child never terminates, because it never gets EOF, because
bf357333
NC
629 we also have the far end of the pipe open. We even need to
630 close the debugging fd, because sometimes it happens to be one
631 end of a pipe, and a process is waiting on the other end for
632 EOF. Normally it would be closed at some point earlier in
633 destruction, but if we happen to cause the pipe to remain open,
634 EOF never occurs, and we get an infinite hang. Hence all the
635 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
636
637 f = sysconf(_SC_OPEN_MAX);
638 if(f < 0) {
808ad2d0
NC
639 where = "sysconf failed";
640 goto abort;
3125a5a4
NC
641 }
642 while (f--) {
643 if (f == sock)
644 continue;
3125a5a4
NC
645 close(f);
646 }
647
2aa47728
NC
648 while (1) {
649 SV *target;
bf357333
NC
650 union control_un control;
651 struct msghdr msg;
652 struct iovec vec[1];
653 struct cmsghdr *cmptr;
654 ssize_t got;
655 int got_fd;
656
657 msg.msg_control = control.control;
658 msg.msg_controllen = sizeof(control.control);
659 /* We're a connected socket so we don't need a source */
660 msg.msg_name = NULL;
661 msg.msg_namelen = 0;
662 msg.msg_iov = vec;
663 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
664
665 vec[0].iov_base = (void*)&target;
666 vec[0].iov_len = sizeof(target);
667
668 got = recvmsg(sock, &msg, 0);
2aa47728
NC
669
670 if(got == 0)
671 break;
672 if(got < 0) {
808ad2d0
NC
673 where = "recv failed";
674 goto abort;
2aa47728
NC
675 }
676 if(got < sizeof(target)) {
808ad2d0
NC
677 where = "short recv";
678 goto abort;
2aa47728 679 }
bf357333 680
808ad2d0
NC
681 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
682 where = "no cmsg";
683 goto abort;
684 }
685 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
686 where = "wrong cmsg_len";
687 goto abort;
688 }
689 if(cmptr->cmsg_level != SOL_SOCKET) {
690 where = "wrong cmsg_level";
691 goto abort;
692 }
693 if(cmptr->cmsg_type != SCM_RIGHTS) {
694 where = "wrong cmsg_type";
695 goto abort;
696 }
bf357333
NC
697
698 got_fd = *(int*)CMSG_DATA(cmptr);
699 /* For our last little bit of trickery, put the file descriptor
700 back into Perl_debug_log, as if we never actually closed it
701 */
808ad2d0
NC
702 if(got_fd != debug_fd) {
703 if (dup2(got_fd, debug_fd) == -1) {
704 where = "dup2";
705 goto abort;
706 }
707 }
2aa47728 708 sv_dump(target);
bf357333 709
2aa47728
NC
710 PerlIO_flush(Perl_debug_log);
711
808ad2d0 712 got = write(sock, &success, sizeof(success));
2aa47728
NC
713
714 if(got < 0) {
808ad2d0
NC
715 where = "write failed";
716 goto abort;
2aa47728 717 }
808ad2d0
NC
718 if(got < sizeof(success)) {
719 where = "short write";
720 goto abort;
2aa47728
NC
721 }
722 }
723 _exit(0);
808ad2d0
NC
724 abort:
725 {
726 int send_errno = errno;
727 unsigned char length = (unsigned char) strlen(where);
728 struct iovec failure[3] = {
729 {(void*)&send_errno, sizeof(send_errno)},
730 {&length, 1},
731 {(void*)where, length}
732 };
733 int got = writev(sock, failure, 3);
734 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
735 in the parent if we try to read from the socketpair after the
736 child has exited, even if there was data to read.
737 So sleep a bit to give the parent a fighting chance of
738 reading the data. */
739 sleep(2);
740 _exit((got == -1) ? errno : 0);
741 }
bf357333 742 /* End of child. */
2aa47728 743 }
41e4abd8 744 PL_dumper_fd = fd[0];
2aa47728
NC
745 close(fd[1]);
746 }
747#endif
748
ff0cee69
PP
749 /* We must account for everything. */
750
751 /* Destroy the main CV and syntax tree */
37e77c23
FC
752 /* Set PL_curcop now, because destroying ops can cause new SVs
753 to be generated in Perl_pad_swipe, and when running with
754 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
755 op from which the filename structure member is copied. */
17fbfdf6 756 PL_curcop = &PL_compiling;
3280af22 757 if (PL_main_root) {
4e380990
DM
758 /* ensure comppad/curpad to refer to main's pad */
759 if (CvPADLIST(PL_main_cv)) {
760 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 761 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 762 }
3280af22 763 op_free(PL_main_root);
5f66b61c 764 PL_main_root = NULL;
a0d0e21e 765 }
5f66b61c 766 PL_main_start = NULL;
aac9d523
DM
767 /* note that PL_main_cv isn't usually actually freed at this point,
768 * due to the CvOUTSIDE refs from subs compiled within it. It will
769 * get freed once all the subs are freed in sv_clean_all(), for
770 * destruct_level > 0 */
3280af22 771 SvREFCNT_dec(PL_main_cv);
601f1833 772 PL_main_cv = NULL;
ca7b837b 773 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 774
13621cfb
NIS
775 /* Tell PerlIO we are about to tear things apart in case
776 we have layers which are using resources that should
777 be cleaned up now.
778 */
779
780 PerlIO_destruct(aTHX);
781
ddf23d4a
SM
782 /*
783 * Try to destruct global references. We do this first so that the
784 * destructors and destructees still exist. Some sv's might remain.
785 * Non-referenced objects are on their own.
786 */
787 sv_clean_objs();
8990e307 788
5cd24f17 789 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 790 SvREFCNT_dec(PL_warnhook);
a0714e2c 791 PL_warnhook = NULL;
3280af22 792 SvREFCNT_dec(PL_diehook);
a0714e2c 793 PL_diehook = NULL;
5cd24f17 794
4b556e6c 795 /* call exit list functions */
3280af22 796 while (PL_exitlistlen-- > 0)
acfe0abc 797 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 798
3280af22 799 Safefree(PL_exitlist);
4b556e6c 800
1c4916e5
CB
801 PL_exitlist = NULL;
802 PL_exitlistlen = 0;
803
a3e6e81e
NC
804 SvREFCNT_dec(PL_registered_mros);
805
551a8b83 806 /* jettison our possibly duplicated environment */
4b647fb0
DM
807 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
808 * so we certainly shouldn't free it here
809 */
2f42fcb0 810#ifndef PERL_MICRO
4b647fb0 811#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 812 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
813#ifdef USE_ITHREADS
814 /* only main thread can free environ[0] contents */
815 && PL_curinterp == aTHX
816#endif
817 )
818 {
551a8b83
JH
819 I32 i;
820
821 for (i = 0; environ[i]; i++)
4b420006 822 safesysfree(environ[i]);
0631ea03 823
4b420006
JH
824 /* Must use safesysfree() when working with environ. */
825 safesysfree(environ);
551a8b83
JH
826
827 environ = PL_origenviron;
828 }
829#endif
2f42fcb0 830#endif /* !PERL_MICRO */
551a8b83 831
30985c42
JH
832 if (destruct_level == 0) {
833
834 DEBUG_P(debprofdump());
835
836#if defined(PERLIO_LAYERS)
837 /* No more IO - including error messages ! */
838 PerlIO_cleanup(aTHX);
839#endif
840
841 CopFILE_free(&PL_compiling);
30985c42
JH
842
843 /* The exit() function will do everything that needs doing. */
844 return STATUS_EXIT;
845 }
846
9fa9f06b
KW
847 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
848
5f8cb046
DM
849#ifdef USE_ITHREADS
850 /* the syntax tree is shared between clones
851 * so op_free(PL_main_root) only ReREFCNT_dec's
852 * REGEXPs in the parent interpreter
853 * we need to manually ReREFCNT_dec for the clones
854 */
0547a729
DM
855 {
856 I32 i = AvFILLp(PL_regex_padav);
857 SV **ary = AvARRAY(PL_regex_padav);
858
859 for (; i; i--) {
860 SvREFCNT_dec(ary[i]);
861 ary[i] = &PL_sv_undef;
862 }
863 }
5f8cb046
DM
864#endif
865
0547a729 866
ad64d0ec 867 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
868 PL_stashcache = NULL;
869
5f05dabc
PP
870 /* loosen bonds of global variables */
871
2f9285f8
DM
872 /* XXX can PL_parser still be non-null here? */
873 if(PL_parser && PL_parser->rsfp) {
874 (void)PerlIO_close(PL_parser->rsfp);
875 PL_parser->rsfp = NULL;
8ebc5c01
PP
876 }
877
84386e14
RGS
878 if (PL_minus_F) {
879 Safefree(PL_splitstr);
880 PL_splitstr = NULL;
881 }
882
8ebc5c01 883 /* switches */
3280af22
NIS
884 PL_minus_n = FALSE;
885 PL_minus_p = FALSE;
886 PL_minus_l = FALSE;
887 PL_minus_a = FALSE;
888 PL_minus_F = FALSE;
889 PL_doswitches = FALSE;
599cee73 890 PL_dowarn = G_WARN_OFF;
1a904fc8 891#ifdef PERL_SAWAMPERSAND
d3b97530 892 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 893#endif
3280af22
NIS
894 PL_unsafe = FALSE;
895
896 Safefree(PL_inplace);
bd61b366 897 PL_inplace = NULL;
a7cb1f99 898 SvREFCNT_dec(PL_patchlevel);
1e8125c6 899 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
900
901 if (PL_e_script) {
902 SvREFCNT_dec(PL_e_script);
a0714e2c 903 PL_e_script = NULL;
8ebc5c01
PP
904 }
905
bf9cdc68
RG
906 PL_perldb = 0;
907
8ebc5c01
PP
908 /* magical thingies */
909
e23d9e2f
CS
910 SvREFCNT_dec(PL_ofsgv); /* *, */
911 PL_ofsgv = NULL;
5f05dabc 912
7889fe52 913 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 914 PL_ors_sv = NULL;
8ebc5c01 915
3280af22 916 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 917 PL_rs = NULL;
dc92893f 918
d33b2eba 919 Safefree(PL_osname); /* $^O */
bd61b366 920 PL_osname = NULL;
5f05dabc 921
3280af22 922 SvREFCNT_dec(PL_statname);
a0714e2c
SS
923 PL_statname = NULL;
924 PL_statgv = NULL;
5f05dabc 925
8ebc5c01
PP
926 /* defgv, aka *_ should be taken care of elsewhere */
927
7d5ea4e7
GS
928 /* float buffer */
929 Safefree(PL_efloatbuf);
bd61b366 930 PL_efloatbuf = NULL;
7d5ea4e7
GS
931 PL_efloatsize = 0;
932
8ebc5c01 933 /* startup and shutdown function lists */
3280af22 934 SvREFCNT_dec(PL_beginav);
5a837c8f 935 SvREFCNT_dec(PL_beginav_save);
3280af22 936 SvREFCNT_dec(PL_endav);
7d30b5c4 937 SvREFCNT_dec(PL_checkav);
ece599bd 938 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
939 SvREFCNT_dec(PL_unitcheckav);
940 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 941 SvREFCNT_dec(PL_initav);
7d49f689
NC
942 PL_beginav = NULL;
943 PL_beginav_save = NULL;
944 PL_endav = NULL;
945 PL_checkav = NULL;
946 PL_checkav_save = NULL;
3c10abe3
AG
947 PL_unitcheckav = NULL;
948 PL_unitcheckav_save = NULL;
7d49f689 949 PL_initav = NULL;
5618dfe8 950
8ebc5c01 951 /* shortcuts just get cleared */
a0714e2c
SS
952 PL_envgv = NULL;
953 PL_incgv = NULL;
954 PL_hintgv = NULL;
955 PL_errgv = NULL;
956 PL_argvgv = NULL;
957 PL_argvoutgv = NULL;
958 PL_stdingv = NULL;
959 PL_stderrgv = NULL;
960 PL_last_in_gv = NULL;
961 PL_replgv = NULL;
a0714e2c
SS
962 PL_DBsingle = NULL;
963 PL_DBtrace = NULL;
964 PL_DBsignal = NULL;
601f1833 965 PL_DBcv = NULL;
7d49f689 966 PL_dbargs = NULL;
5c284bb0 967 PL_debstash = NULL;
8ebc5c01 968
8cece913
FC
969 SvREFCNT_dec(PL_DBgv);
970 SvREFCNT_dec(PL_DBline);
971 SvREFCNT_dec(PL_DBsub);
972 PL_DBgv = NULL;
973 PL_DBline = NULL;
974 PL_DBsub = NULL;
975
7a1c5554 976 SvREFCNT_dec(PL_argvout_stack);
7d49f689 977 PL_argvout_stack = NULL;
8ebc5c01 978
5c831c24 979 SvREFCNT_dec(PL_modglobal);
5c284bb0 980 PL_modglobal = NULL;
5c831c24 981 SvREFCNT_dec(PL_preambleav);
7d49f689 982 PL_preambleav = NULL;
5c831c24 983 SvREFCNT_dec(PL_subname);
a0714e2c 984 PL_subname = NULL;
ca0c25f6 985#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 986 SvREFCNT_dec(PL_pidstatus);
5c284bb0 987 PL_pidstatus = NULL;
ca0c25f6 988#endif
5c831c24 989 SvREFCNT_dec(PL_toptarget);
a0714e2c 990 PL_toptarget = NULL;
5c831c24 991 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
992 PL_bodytarget = NULL;
993 PL_formtarget = NULL;
5c831c24 994
d33b2eba 995 /* free locale stuff */
b9582b6a 996#ifdef USE_LOCALE_COLLATE
d33b2eba 997 Safefree(PL_collation_name);
bd61b366 998 PL_collation_name = NULL;
b9582b6a 999#endif
d33b2eba 1000
b9582b6a 1001#ifdef USE_LOCALE_NUMERIC
d33b2eba 1002 Safefree(PL_numeric_name);
bd61b366 1003 PL_numeric_name = NULL;
a453c169 1004 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1005 PL_numeric_radix_sv = NULL;
b9582b6a 1006#endif
d33b2eba 1007
9c0b6888
KW
1008 /* clear character classes */
1009 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1010 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1011 PL_utf8_swash_ptrs[i] = NULL;
1012 }
5c831c24
GS
1013 SvREFCNT_dec(PL_utf8_mark);
1014 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1015 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1016 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1017 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1018 SvREFCNT_dec(PL_utf8_idstart);
1019 SvREFCNT_dec(PL_utf8_idcont);
2726813d 1020 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b
KW
1021 SvREFCNT_dec(PL_AboveLatin1);
1022 SvREFCNT_dec(PL_UpperLatin1);
1023 SvREFCNT_dec(PL_Latin1);
1024 SvREFCNT_dec(PL_NonL1NonFinalFold);
1025 SvREFCNT_dec(PL_HasMultiCharFold);
a0714e2c
SS
1026 PL_utf8_mark = NULL;
1027 PL_utf8_toupper = NULL;
1028 PL_utf8_totitle = NULL;
1029 PL_utf8_tolower = NULL;
1030 PL_utf8_tofold = NULL;
1031 PL_utf8_idstart = NULL;
1032 PL_utf8_idcont = NULL;
2726813d 1033 PL_utf8_foldclosures = NULL;
9fa9f06b
KW
1034 PL_AboveLatin1 = NULL;
1035 PL_HasMultiCharFold = NULL;
1036 PL_Latin1 = NULL;
1037 PL_NonL1NonFinalFold = NULL;
1038 PL_UpperLatin1 = NULL;
86f72d56 1039 for (i = 0; i < POSIX_CC_COUNT; i++) {
30f9bdb0
KW
1040 SvREFCNT_dec(PL_Posix_ptrs[i]);
1041 PL_Posix_ptrs[i] = NULL;
1042
86f72d56
KW
1043 SvREFCNT_dec(PL_L1Posix_ptrs[i]);
1044 PL_L1Posix_ptrs[i] = NULL;
cac6e0ca
KW
1045
1046 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1047 PL_XPosix_ptrs[i] = NULL;
86f72d56 1048 }
5c831c24 1049
971a9dd3 1050 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1051 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1052 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1053 cophh_free(CopHINTHASH_get(&PL_compiling));
1054 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1055 CopFILE_free(&PL_compiling);
5c831c24 1056
a0d0e21e 1057 /* Prepare to destruct main symbol table. */
5f05dabc 1058
3280af22 1059 hv = PL_defstash;
ca556bcd
DM
1060 /* break ref loop *:: <=> %:: */
1061 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1062 PL_defstash = 0;
a0d0e21e 1063 SvREFCNT_dec(hv);
5c831c24 1064 SvREFCNT_dec(PL_curstname);
a0714e2c 1065 PL_curstname = NULL;
a0d0e21e 1066
5a844595
GS
1067 /* clear queued errors */
1068 SvREFCNT_dec(PL_errors);
a0714e2c 1069 PL_errors = NULL;
5a844595 1070
dd69841b
BB
1071 SvREFCNT_dec(PL_isarev);
1072
a0d0e21e 1073 FREETMPS;
9b387841 1074 if (destruct_level >= 2) {
3280af22 1075 if (PL_scopestack_ix != 0)
9b387841
NC
1076 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1077 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1078 (long)PL_scopestack_ix);
3280af22 1079 if (PL_savestack_ix != 0)
9b387841
NC
1080 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1081 "Unbalanced saves: %ld more saves than restores\n",
1082 (long)PL_savestack_ix);
3280af22 1083 if (PL_tmps_floor != -1)
9b387841
NC
1084 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1085 (long)PL_tmps_floor + 1);
a0d0e21e 1086 if (cxstack_ix != -1)
9b387841
NC
1087 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1088 (long)cxstack_ix + 1);
a0d0e21e 1089 }
8990e307 1090
0547a729
DM
1091#ifdef USE_ITHREADS
1092 SvREFCNT_dec(PL_regex_padav);
1093 PL_regex_padav = NULL;
1094 PL_regex_pad = NULL;
1095#endif
1096
776df701 1097#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1098 /* the entries in this list are allocated via SV PVX's, so get freed
1099 * in sv_clean_all */
1100 Safefree(PL_my_cxt_list);
776df701 1101#endif
57bb2458 1102
8990e307 1103 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1104
1105 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1106 while (sv_clean_all() > 2)
5226ed68
JH
1107 ;
1108
23083432
FC
1109#ifdef USE_ITHREADS
1110 Safefree(PL_stashpad); /* must come after sv_clean_all */
1111#endif
1112
d4777f27
GS
1113 AvREAL_off(PL_fdpid); /* no surviving entries */
1114 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1115 PL_fdpid = NULL;
d33b2eba 1116
6c644e78
GS
1117#ifdef HAVE_INTERP_INTERN
1118 sys_intern_clear();
1119#endif
1120
a38ab475
RZ
1121 /* constant strings */
1122 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1123 SvREFCNT_dec(PL_sv_consts[i]);
1124 PL_sv_consts[i] = NULL;
1125 }
1126
6e72f9df
PP
1127 /* Destruct the global string table. */
1128 {
1129 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1130 * so that sv_free() won't fail on them.
80459961
NC
1131 * Now that the global string table is using a single hunk of memory
1132 * for both HE and HEK, we either need to explicitly unshare it the
1133 * correct way, or actually free things here.
6e72f9df 1134 */
80459961
NC
1135 I32 riter = 0;
1136 const I32 max = HvMAX(PL_strtab);
c4420975 1137 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1138 HE *hent = array[0];
1139
6e72f9df 1140 for (;;) {
0453d815 1141 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1142 HE * const next = HeNEXT(hent);
9014280d 1143 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1144 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1145 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1146 Safefree(hent);
1147 hent = next;
6e72f9df
PP
1148 }
1149 if (!hent) {
1150 if (++riter > max)
1151 break;
1152 hent = array[riter];
1153 }
1154 }
80459961
NC
1155
1156 Safefree(array);
1157 HvARRAY(PL_strtab) = 0;
1158 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1159 }
3280af22 1160 SvREFCNT_dec(PL_strtab);
6e72f9df 1161
e652bb2f 1162#ifdef USE_ITHREADS
c21d1a0f 1163 /* free the pointer tables used for cloning */
a0739874 1164 ptr_table_free(PL_ptr_table);
bf9cdc68 1165 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1166#endif
a0739874 1167
d33b2eba
GS
1168 /* free special SVs */
1169
1170 SvREFCNT(&PL_sv_yes) = 0;
1171 sv_clear(&PL_sv_yes);
1172 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1173 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1174
1175 SvREFCNT(&PL_sv_no) = 0;
1176 sv_clear(&PL_sv_no);
1177 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1178 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1179
9f375a43
DM
1180 {
1181 int i;
1182 for (i=0; i<=2; i++) {
1183 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1184 sv_clear(PERL_DEBUG_PAD(i));
1185 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1186 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1187 }
1188 }
1189
0453d815 1190 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1191 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1192
eba0f806
DM
1193#ifdef DEBUG_LEAKING_SCALARS
1194 if (PL_sv_count != 0) {
1195 SV* sva;
1196 SV* sv;
eb578fdb 1197 SV* svend;
eba0f806 1198
ad64d0ec 1199 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1200 svend = &sva[SvREFCNT(sva)];
1201 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1202 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1203 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1204 " flags=0x%"UVxf
fd0854ff 1205 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1206 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1207 "serial %"UVuf"\n",
574b8821
NC
1208 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1209 pTHX__VALUE,
fd0854ff
DM
1210 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1211 sv->sv_debug_line,
1212 sv->sv_debug_inpad ? "for" : "by",
1213 sv->sv_debug_optype ?
1214 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1215 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1216 sv->sv_debug_serial
fd0854ff 1217 );
2aa47728 1218#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1219 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1220#endif
eba0f806
DM
1221 }
1222 }
1223 }
1224 }
2aa47728
NC
1225#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1226 {
1227 int status;
1228 fd_set rset;
1229 /* Wait for up to 4 seconds for child to terminate.
1230 This seems to be the least effort way of timing out on reaping
1231 its exit status. */
1232 struct timeval waitfor = {4, 0};
41e4abd8 1233 int sock = PL_dumper_fd;
2aa47728
NC
1234
1235 shutdown(sock, 1);
1236 FD_ZERO(&rset);
1237 FD_SET(sock, &rset);
1238 select(sock + 1, &rset, NULL, NULL, &waitfor);
1239 waitpid(child, &status, WNOHANG);
1240 close(sock);
1241 }
1242#endif
eba0f806 1243#endif
77abb4c6
NC
1244#ifdef DEBUG_LEAKING_SCALARS_ABORT
1245 if (PL_sv_count)
1246 abort();
1247#endif
bf9cdc68 1248 PL_sv_count = 0;
eba0f806 1249
56a2bab7 1250#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1251 /* No more IO - including error messages ! */
1252 PerlIO_cleanup(aTHX);
1253#endif
1254
9f4bd222 1255 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1256 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1257 for no arg - and will try and SvREFCNT_dec it.
1258 */
1259 SvREFCNT(&PL_sv_undef) = 0;
1260 SvREADONLY_off(&PL_sv_undef);
1261
3280af22 1262 Safefree(PL_origfilename);
bd61b366 1263 PL_origfilename = NULL;
43c5f42d 1264 Safefree(PL_reg_curpm);
dd28f7bb 1265 free_tied_hv_pool();
3280af22 1266 Safefree(PL_op_mask);
cf36064f 1267 Safefree(PL_psig_name);
bf9cdc68 1268 PL_psig_name = (SV**)NULL;
d525a7b2 1269 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1270 {
1271 /* We need to NULL PL_psig_pend first, so that
1272 signal handlers know not to use it */
1273 int *psig_save = PL_psig_pend;
1274 PL_psig_pend = (int*)NULL;
1275 Safefree(psig_save);
1276 }
6e72f9df 1277 nuke_stacks();
284167a5
SM
1278 TAINTING_set(FALSE);
1279 TAINT_WARN_set(FALSE);
3280af22 1280 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1281 PL_debug = 0;
ac27b0f5 1282
a0d0e21e 1283 DEBUG_P(debprofdump());
d33b2eba 1284
e5dd39fc 1285#ifdef USE_REENTRANT_API
10bc17b6 1286 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1287#endif
1288
612f20c3
GS
1289 sv_free_arenas();
1290
5d9a96ca
DM
1291 while (PL_regmatch_slab) {
1292 regmatch_slab *s = PL_regmatch_slab;
1293 PL_regmatch_slab = PL_regmatch_slab->next;
1294 Safefree(s);
1295 }
1296
fc36a67e
PP
1297 /* As the absolutely last thing, free the non-arena SV for mess() */
1298
3280af22 1299 if (PL_mess_sv) {
f350b448
NC
1300 /* we know that type == SVt_PVMG */
1301
9c63abab 1302 /* it could have accumulated taint magic */
f350b448
NC
1303 MAGIC* mg;
1304 MAGIC* moremagic;
1305 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1306 moremagic = mg->mg_moremagic;
1307 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1308 && mg->mg_len >= 0)
1309 Safefree(mg->mg_ptr);
1310 Safefree(mg);
9c63abab 1311 }
f350b448 1312
fc36a67e 1313 /* we know that type >= SVt_PV */
8bd4d4c5 1314 SvPV_free(PL_mess_sv);
3280af22
NIS
1315 Safefree(SvANY(PL_mess_sv));
1316 Safefree(PL_mess_sv);
a0714e2c 1317 PL_mess_sv = NULL;
fc36a67e 1318 }
37038d91 1319 return STATUS_EXIT;
79072805
LW
1320}
1321
954c1994
GS
1322/*
1323=for apidoc perl_free
1324
1325Releases a Perl interpreter. See L<perlembed>.
1326
1327=cut
1328*/
1329
79072805 1330void
0cb96387 1331perl_free(pTHXx)
79072805 1332{
5174512c
NC
1333 dVAR;
1334
7918f24d
NC
1335 PERL_ARGS_ASSERT_PERL_FREE;
1336
c301d606
DM
1337 if (PL_veto_cleanup)
1338 return;
1339
7cb608b5 1340#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1341 {
1342 /*
1343 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1344 * value as we're probably hunting memory leaks then
1345 */
36e77d41 1346 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1347 const U32 old_debug = PL_debug;
55ef9aae
MHM
1348 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1349 thread at thread exit. */
4fd0a9b8
NC
1350 if (DEBUG_m_TEST) {
1351 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1352 "free this thread's memory\n");
1353 PL_debug &= ~ DEBUG_m_FLAG;
1354 }
55ef9aae
MHM
1355 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1356 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1357 PL_debug = old_debug;
55ef9aae
MHM
1358 }
1359 }
7cb608b5
NC
1360#endif
1361
acfe0abc 1362#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1363# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1364 {
acfe0abc 1365# ifdef NETWARE
7af12a34 1366 void *host = nw_internal_host;
7af12a34 1367 PerlMem_free(aTHXx);
7af12a34 1368 nw_delete_internal_host(host);
acfe0abc 1369# else
bdb50480
NC
1370 void *host = w32_internal_host;
1371 PerlMem_free(aTHXx);
7af12a34 1372 win32_delete_internal_host(host);
acfe0abc 1373# endif
7af12a34 1374 }
1c0ca838
GS
1375# else
1376 PerlMem_free(aTHXx);
1377# endif
acfe0abc
GS
1378#else
1379 PerlMem_free(aTHXx);
76e3520e 1380#endif
79072805
LW
1381}
1382
b7f7fff6 1383#if defined(USE_ITHREADS)
aebd1ac7
GA
1384/* provide destructors to clean up the thread key when libperl is unloaded */
1385#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1386
826955bd 1387#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1388#pragma fini "perl_fini"
666ad1ec
GA
1389#elif defined(__sun) && !defined(__GNUC__)
1390#pragma fini (perl_fini)
aebd1ac7
GA
1391#endif
1392
0dbb1585
AL
1393static void
1394#if defined(__GNUC__)
1395__attribute__((destructor))
aebd1ac7 1396#endif
de009b76 1397perl_fini(void)
aebd1ac7 1398{
27da23d5 1399 dVAR;
5c64bffd
NC
1400 if (
1401#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1402 my_vars &&
1403#endif
1404 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1405 FREE_THREAD_KEY;
1406}
1407
1408#endif /* WIN32 */
1409#endif /* THREADS */
1410
4b556e6c 1411void
864dbfa3 1412Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1413{
97aff369 1414 dVAR;
3280af22
NIS
1415 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1416 PL_exitlist[PL_exitlistlen].fn = fn;
1417 PL_exitlist[PL_exitlistlen].ptr = ptr;
1418 ++PL_exitlistlen;
4b556e6c
JD
1419}
1420
b7975bdd
NC
1421STATIC void
1422S_set_caret_X(pTHX) {
97aff369 1423 dVAR;
fafc274c 1424 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1425 if (tmpgv) {
0f1723e1 1426 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1427#if defined(OS2)
1428 sv_setpv(caret_x, os2_execname(aTHX));
1429#else
2982a345
NC
1430# ifdef USE_KERN_PROC_PATHNAME
1431 size_t size = 0;
1432 int mib[4];
1433 mib[0] = CTL_KERN;
1434 mib[1] = KERN_PROC;
1435 mib[2] = KERN_PROC_PATHNAME;
1436 mib[3] = -1;
1437
1438 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1439 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1440 sv_grow(caret_x, size);
1441
1442 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1443 && size > 2) {
1444 SvPOK_only(caret_x);
1445 SvCUR_set(caret_x, size - 1);
1446 SvTAINT(caret_x);
1447 return;
1448 }
1449 }
ae60cb46
NC
1450# elif defined(USE_NSGETEXECUTABLEPATH)
1451 char buf[1];
1452 uint32_t size = sizeof(buf);
ae60cb46
NC
1453
1454 _NSGetExecutablePath(buf, &size);
1455 if (size < MAXPATHLEN * MAXPATHLEN) {
1456 sv_grow(caret_x, size);
1457 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1458 char *const tidied = realpath(SvPVX(caret_x), NULL);
1459 if (tidied) {
1460 sv_setpv(caret_x, tidied);
1461 free(tidied);
1462 } else {
1463 SvPOK_only(caret_x);
1464 SvCUR_set(caret_x, size);
1465 }
1466 return;
1467 }
1468 }
2982a345 1469# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1470 char buf[MAXPATHLEN];
1471 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1472
1473 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1474 includes a spurious NUL which will cause $^X to fail in system
1475 or backticks (this will prevent extensions from being built and
1476 many tests from working). readlink is not meant to add a NUL.
1477 Normal readlink works fine.
1478 */
1479 if (len > 0 && buf[len-1] == '\0') {
1480 len--;
1481 }
1482
1483 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1484 returning the text "unknown" from the readlink rather than the path
1485 to the executable (or returning an error from the readlink). Any
1486 valid path has a '/' in it somewhere, so use that to validate the
1487 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1488 */
1489 if (len > 0 && memchr(buf, '/', len)) {
1490 sv_setpvn(caret_x, buf, len);
82552a95 1491 return;
700dd4f8 1492 }
82552a95
NC
1493# endif
1494 /* Fallback to this: */
0f1723e1 1495 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1496#endif
b7975bdd
NC
1497 }
1498}
1499
954c1994
GS
1500/*
1501=for apidoc perl_parse
1502
1503Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1504
1505=cut
1506*/
1507
03d9f026
FC
1508#define SET_CURSTASH(newstash) \
1509 if (PL_curstash != newstash) { \
1510 SvREFCNT_dec(PL_curstash); \
1511 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1512 }
1513
79072805 1514int
0cb96387 1515perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1516{
27da23d5 1517 dVAR;
6224f72b 1518 I32 oldscope;
6224f72b 1519 int ret;
db36c5a1 1520 dJMPENV;
8d063cd8 1521
7918f24d
NC
1522 PERL_ARGS_ASSERT_PERL_PARSE;
1523#ifndef MULTIPLICITY
ed6c66dd 1524 PERL_UNUSED_ARG(my_perl);
7918f24d 1525#endif
7dc86639 1526#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1527 {
7dc86639
YO
1528 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1529
1530 if (s && (atoi(s) == 1)) {
1531 unsigned char *seed= PERL_HASH_SEED;
1532 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1533 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1534 while (seed < seed_end) {
1535 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1536 }
6a5b4183
YO
1537#ifdef PERL_HASH_RANDOMIZE_KEYS
1538 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1539 PL_HASH_RAND_BITS_ENABLED,
1540 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1541#endif
7dc86639
YO
1542 PerlIO_printf(Perl_debug_log, "\n");
1543 }
b0891165
JH
1544 }
1545#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1546 PL_origargc = argc;
e2975953 1547 PL_origargv = argv;
a0d0e21e 1548
a2722ac9
GA
1549 if (PL_origalen != 0) {
1550 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1551 }
1552 else {
3cb9023d
JH
1553 /* Set PL_origalen be the sum of the contiguous argv[]
1554 * elements plus the size of the env in case that it is
e9137a8e 1555 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1556 * as the maximum modifiable length of $0. In the worst case
1557 * the area we are able to modify is limited to the size of
43c32782 1558 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1559 * --jhi */
e1ec3a88 1560 const char *s = NULL;
54bfe034 1561 int i;
1b6737cc 1562 const UV mask =
7d8e7db3 1563 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1564 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1565 const UV aligned =
43c32782
JH
1566 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1567
1568 /* See if all the arguments are contiguous in memory. Note
1569 * that 'contiguous' is a loose term because some platforms
1570 * align the argv[] and the envp[]. If the arguments look
1571 * like non-aligned, assume that they are 'strictly' or
1572 * 'traditionally' contiguous. If the arguments look like
1573 * aligned, we just check that they are within aligned
1574 * PTRSIZE bytes. As long as no system has something bizarre
1575 * like the argv[] interleaved with some other data, we are
1576 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1577 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1578 while (*s) s++;
1579 for (i = 1; i < PL_origargc; i++) {
1580 if ((PL_origargv[i] == s + 1
43c32782 1581#ifdef OS2
c8941eeb 1582 || PL_origargv[i] == s + 2
43c32782 1583#endif
c8941eeb
JH
1584 )
1585 ||
1586 (aligned &&
1587 (PL_origargv[i] > s &&
1588 PL_origargv[i] <=
1589 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1590 )
1591 {
1592 s = PL_origargv[i];
1593 while (*s) s++;
1594 }
1595 else
1596 break;
54bfe034 1597 }
54bfe034 1598 }
a4a109c2
JD
1599
1600#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1601 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1602 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1603 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1604 ||
1605 (aligned &&
1606 (PL_origenviron[0] > s &&
1607 PL_origenviron[0] <=
1608 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1609 )
1610 {
9d419b5f 1611#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1612 s = PL_origenviron[0];
1613 while (*s) s++;
1614#endif
bd61b366 1615 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1616 /* Force copy of environment. */
1617 for (i = 1; PL_origenviron[i]; i++) {
1618 if (PL_origenviron[i] == s + 1
1619 ||
1620 (aligned &&
1621 (PL_origenviron[i] > s &&
1622 PL_origenviron[i] <=
1623 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1624 )
1625 {
1626 s = PL_origenviron[i];
1627 while (*s) s++;
1628 }
1629 else
1630 break;
54bfe034 1631 }
43c32782 1632 }
54bfe034 1633 }
a4a109c2
JD
1634#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1635
2d2af554 1636 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1637 }
1638
3280af22 1639 if (PL_do_undump) {
a0d0e21e
LW
1640
1641 /* Come here if running an undumped a.out. */
1642
3280af22
NIS
1643 PL_origfilename = savepv(argv[0]);
1644 PL_do_undump = FALSE;
a0d0e21e 1645 cxstack_ix = -1; /* start label stack again */
748a9306 1646 init_ids();
284167a5 1647 assert (!TAINT_get);
b7975bdd
NC
1648 TAINT;
1649 S_set_caret_X(aTHX);
1650 TAINT_NOT;
a0d0e21e
LW
1651 init_postdump_symbols(argc,argv,env);
1652 return 0;
1653 }
1654
3280af22 1655 if (PL_main_root) {
3280af22 1656 op_free(PL_main_root);
5f66b61c 1657 PL_main_root = NULL;
ff0cee69 1658 }
5f66b61c 1659 PL_main_start = NULL;
3280af22 1660 SvREFCNT_dec(PL_main_cv);
601f1833 1661 PL_main_cv = NULL;
79072805 1662
3280af22
NIS
1663 time(&PL_basetime);
1664 oldscope = PL_scopestack_ix;
599cee73 1665 PL_dowarn = G_WARN_OFF;
f86702cc 1666
14dd3ad8 1667 JMPENV_PUSH(ret);
6224f72b 1668 switch (ret) {
312caa8e 1669 case 0:
14dd3ad8 1670 parse_body(env,xsinit);
9ebf26ad 1671 if (PL_unitcheckav) {
3c10abe3 1672 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1673 }
1674 if (PL_checkav) {
ca7b837b 1675 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1676 call_list(oldscope, PL_checkav);
9ebf26ad 1677 }
14dd3ad8
GS
1678 ret = 0;
1679 break;
6224f72b
GS
1680 case 1:
1681 STATUS_ALL_FAILURE;
1682 /* FALL THROUGH */
1683 case 2:
1684 /* my_exit() was called */
3280af22 1685 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1686 LEAVE;
1687 FREETMPS;
03d9f026 1688 SET_CURSTASH(PL_defstash);
9ebf26ad 1689 if (PL_unitcheckav) {
3c10abe3 1690 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1691 }
1692 if (PL_checkav) {
ca7b837b 1693 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1694 call_list(oldscope, PL_checkav);
9ebf26ad 1695 }
37038d91 1696 ret = STATUS_EXIT;
14dd3ad8 1697 break;
6224f72b 1698 case 3:
bf49b057 1699 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1700 ret = 1;
1701 break;
6224f72b 1702 }
14dd3ad8
GS
1703 JMPENV_POP;
1704 return ret;
1705}
1706
4a5df386
NC
1707/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1708 miniperl, and we need to see those flags reflected in the values here. */
1709
1710/* What this returns is subject to change. Use the public interface in Config.
1711 */
1712static void
1713S_Internals_V(pTHX_ CV *cv)
1714{
1715 dXSARGS;
1716#ifdef LOCAL_PATCH_COUNT
1717 const int local_patch_count = LOCAL_PATCH_COUNT;
1718#else
1719 const int local_patch_count = 0;
1720#endif
2dc296d2 1721 const int entries = 3 + local_patch_count;
4a5df386 1722 int i;
fe1c5936 1723 static const char non_bincompat_options[] =
4a5df386
NC
1724# ifdef DEBUGGING
1725 " DEBUGGING"
1726# endif
1727# ifdef NO_MATHOMS
0d311fbe 1728 " NO_MATHOMS"
4a5df386 1729# endif
59b86f4b
DM
1730# ifdef NO_HASH_SEED
1731 " NO_HASH_SEED"
1732# endif
3b0e4ee2
MB
1733# ifdef NO_TAINT_SUPPORT
1734 " NO_TAINT_SUPPORT"
1735# endif
4a5df386
NC
1736# ifdef PERL_DISABLE_PMC
1737 " PERL_DISABLE_PMC"
1738# endif
1739# ifdef PERL_DONT_CREATE_GVSV
1740 " PERL_DONT_CREATE_GVSV"
1741# endif
9a044a43
NC
1742# ifdef PERL_EXTERNAL_GLOB
1743 " PERL_EXTERNAL_GLOB"
1744# endif
59b86f4b
DM
1745# ifdef PERL_HASH_FUNC_SIPHASH
1746 " PERL_HASH_FUNC_SIPHASH"
1747# endif
1748# ifdef PERL_HASH_FUNC_SDBM
1749 " PERL_HASH_FUNC_SDBM"
1750# endif
1751# ifdef PERL_HASH_FUNC_DJB2
1752 " PERL_HASH_FUNC_DJB2"
1753# endif
1754# ifdef PERL_HASH_FUNC_SUPERFAST
1755 " PERL_HASH_FUNC_SUPERFAST"
1756# endif
1757# ifdef PERL_HASH_FUNC_MURMUR3
1758 " PERL_HASH_FUNC_MURMUR3"
1759# endif
1760# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1761 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1762# endif
1763# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1764 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1765# endif
1766# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1767 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1768# endif
4a5df386
NC
1769# ifdef PERL_IS_MINIPERL
1770 " PERL_IS_MINIPERL"
1771# endif
1772# ifdef PERL_MALLOC_WRAP
1773 " PERL_MALLOC_WRAP"
1774# endif
1775# ifdef PERL_MEM_LOG
1776 " PERL_MEM_LOG"
1777# endif
1778# ifdef PERL_MEM_LOG_NOIMPL
1779 " PERL_MEM_LOG_NOIMPL"
1780# endif
2542212d
DM
1781# ifdef PERL_NEW_COPY_ON_WRITE
1782 " PERL_NEW_COPY_ON_WRITE"
1783# endif
59b86f4b
DM
1784# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1785 " PERL_PERTURB_KEYS_DETERMINISTIC"
1786# endif
1787# ifdef PERL_PERTURB_KEYS_DISABLED
1788 " PERL_PERTURB_KEYS_DISABLED"
1789# endif
1790# ifdef PERL_PERTURB_KEYS_RANDOM
1791 " PERL_PERTURB_KEYS_RANDOM"
1792# endif
c3cf41ec
NC
1793# ifdef PERL_PRESERVE_IVUV
1794 " PERL_PRESERVE_IVUV"
1795# endif
c051e30b
NC
1796# ifdef PERL_RELOCATABLE_INCPUSH
1797 " PERL_RELOCATABLE_INCPUSH"
1798# endif
4a5df386
NC
1799# ifdef PERL_USE_DEVEL
1800 " PERL_USE_DEVEL"
1801# endif
1802# ifdef PERL_USE_SAFE_PUTENV
1803 " PERL_USE_SAFE_PUTENV"
1804# endif
a3749cf3
NC
1805# ifdef UNLINK_ALL_VERSIONS
1806 " UNLINK_ALL_VERSIONS"
1807# endif
de618ee4
NC
1808# ifdef USE_ATTRIBUTES_FOR_PERLIO
1809 " USE_ATTRIBUTES_FOR_PERLIO"
1810# endif
4a5df386
NC
1811# ifdef USE_FAST_STDIO
1812 " USE_FAST_STDIO"
1813# endif
59b86f4b
DM
1814# ifdef USE_HASH_SEED_EXPLICIT
1815 " USE_HASH_SEED_EXPLICIT"
1816# endif
98548bdf
NC
1817# ifdef USE_LOCALE
1818 " USE_LOCALE"
1819# endif
98548bdf
NC
1820# ifdef USE_LOCALE_CTYPE
1821 " USE_LOCALE_CTYPE"
1822# endif
5a8d8935
NC
1823# ifdef USE_PERL_ATOF
1824 " USE_PERL_ATOF"
1825# endif
0d311fbe
NC
1826# ifdef USE_SITECUSTOMIZE
1827 " USE_SITECUSTOMIZE"
1828# endif
4a5df386
NC
1829 ;
1830 PERL_UNUSED_ARG(cv);
1831 PERL_UNUSED_ARG(items);
1832
1833 EXTEND(SP, entries);
1834
1835 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1836 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1837 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1838
1839#ifdef __DATE__
1840# ifdef __TIME__
1841 PUSHs(Perl_newSVpvn_flags(aTHX_
1842 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1843 SVs_TEMP));
1844# else
1845 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1846 SVs_TEMP));
1847# endif
1848#else
1849 PUSHs(&PL_sv_undef);
1850#endif
1851
4a5df386
NC
1852 for (i = 1; i <= local_patch_count; i++) {
1853 /* This will be an undef, if PL_localpatches[i] is NULL. */
1854 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1855 }
1856
1857 XSRETURN(entries);
1858}
1859
be71fc8f
NC
1860#define INCPUSH_UNSHIFT 0x01
1861#define INCPUSH_ADD_OLD_VERS 0x02
1862#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1863#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1864#define INCPUSH_NOT_BASEDIR 0x10
1865#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1866#define INCPUSH_ADD_SUB_DIRS \
1867 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1868
312caa8e 1869STATIC void *
14dd3ad8 1870S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1871{
27da23d5 1872 dVAR;
2f9285f8 1873 PerlIO *rsfp;
312caa8e 1874 int argc = PL_origargc;
8f42b153 1875 char **argv = PL_origargv;
e1ec3a88 1876 const char *scriptname = NULL;
312caa8e 1877 VOL bool dosearch = FALSE;
eb578fdb 1878 char c;
737c24fc 1879 bool doextract = FALSE;
bd61b366 1880 const char *cddir = NULL;
ab019eaa 1881#ifdef USE_SITECUSTOMIZE
20ef40cf 1882 bool minus_f = FALSE;
ab019eaa 1883#endif
95670bde 1884 SV *linestr_sv = NULL;
5486870f 1885 bool add_read_e_script = FALSE;
87606032 1886 U32 lex_start_flags = 0;
009d90df 1887
ca7b837b 1888 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1889
6224f72b 1890 init_main_stash();
54310121 1891
c7030b81
NC
1892 {
1893 const char *s;
6224f72b
GS
1894 for (argc--,argv++; argc > 0; argc--,argv++) {
1895 if (argv[0][0] != '-' || !argv[0][1])
1896 break;
6224f72b
GS
1897 s = argv[0]+1;
1898 reswitch:
47f56822 1899 switch ((c = *s)) {
729a02f2 1900 case 'C':
1d5472a9
GS
1901#ifndef PERL_STRICT_CR
1902 case '\r':
1903#endif
6224f72b
GS
1904 case ' ':
1905 case '0':
1906 case 'F':
1907 case 'a':
1908 case 'c':
1909 case 'd':
1910 case 'D':
1911 case 'h':
1912 case 'i':
1913 case 'l':
1914 case 'M':
1915 case 'm':
1916 case 'n':
1917 case 'p':
1918 case 's':
1919 case 'u':
1920 case 'U':
1921 case 'v':
599cee73
PM
1922 case 'W':
1923 case 'X':
6224f72b 1924 case 'w':
97bd5664 1925 if ((s = moreswitches(s)))
6224f72b
GS
1926 goto reswitch;
1927 break;
33b78306 1928
1dbad523 1929 case 't':
284167a5
SM
1930#if SILENT_NO_TAINT_SUPPORT
1931 /* silently ignore */
1932#elif NO_TAINT_SUPPORT
3231f579 1933 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1934 "Cowardly refusing to run with -t or -T flags");
1935#else
22f7c9c9 1936 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1937 if( !TAINTING_get ) {
1938 TAINT_WARN_set(TRUE);
1939 TAINTING_set(TRUE);
317ea90d 1940 }
284167a5 1941#endif
317ea90d
MS
1942 s++;
1943 goto reswitch;
6224f72b 1944 case 'T':
284167a5
SM
1945#if SILENT_NO_TAINT_SUPPORT
1946 /* silently ignore */
1947#elif NO_TAINT_SUPPORT
3231f579 1948 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1949 "Cowardly refusing to run with -t or -T flags");
1950#else
22f7c9c9 1951 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1952 TAINTING_set(TRUE);
1953 TAINT_WARN_set(FALSE);
1954#endif
6224f72b
GS
1955 s++;
1956 goto reswitch;
f86702cc 1957
bc9b29db
RH
1958 case 'E':
1959 PL_minus_E = TRUE;
1960 /* FALL THROUGH */
6224f72b 1961 case 'e':
f20b2998 1962 forbid_setid('e', FALSE);
3280af22 1963 if (!PL_e_script) {
396482e1 1964 PL_e_script = newSVpvs("");
5486870f 1965 add_read_e_script = TRUE;
6224f72b
GS
1966 }
1967 if (*++s)
3280af22 1968 sv_catpv(PL_e_script, s);
6224f72b 1969 else if (argv[1]) {
3280af22 1970 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1971 argc--,argv++;
1972 }
1973 else
47f56822 1974 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1975 sv_catpvs(PL_e_script, "\n");
6224f72b 1976 break;
afe37c7d 1977
20ef40cf 1978 case 'f':
f5542d3a 1979#ifdef USE_SITECUSTOMIZE
20ef40cf 1980 minus_f = TRUE;
f5542d3a 1981#endif
20ef40cf
GA
1982 s++;
1983 goto reswitch;
1984
6224f72b 1985 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1986 forbid_setid('I', FALSE);
bd61b366 1987 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1988 argc--,argv++;
1989 }
6224f72b 1990 if (s && *s) {
0df16ed7 1991 STRLEN len = strlen(s);
55b4bc1c 1992 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1993 }
1994 else
a67e862a 1995 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1996 break;
6224f72b 1997 case 'S':
f20b2998 1998 forbid_setid('S', FALSE);
6224f72b
GS
1999 dosearch = TRUE;
2000 s++;
2001 goto reswitch;
2002 case 'V':
7edfd0ef
NC
2003 {
2004 SV *opts_prog;
2005
7edfd0ef 2006 if (*++s != ':') {
37ca4a5b 2007 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
2008 }
2009 else {
2010 ++s;
2011 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 2012 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
2013 0, s, 0);
2014 s += strlen(s);
2015 }
37ca4a5b 2016 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
2017 /* don't look for script or read stdin */
2018 scriptname = BIT_BUCKET;
2019 goto reswitch;
6224f72b 2020 }
6224f72b 2021 case 'x':
737c24fc 2022 doextract = TRUE;
6224f72b 2023 s++;
304334da 2024 if (*s)
f4c556ac 2025 cddir = s;
6224f72b
GS
2026 break;
2027 case 0:
2028 break;
2029 case '-':
2030 if (!*++s || isSPACE(*s)) {
2031 argc--,argv++;
2032 goto switch_end;
2033 }
ee8bc8b7
NC
2034 /* catch use of gnu style long options.
2035 Both of these exit immediately. */
2036 if (strEQ(s, "version"))
2037 minus_v();
2038 if (strEQ(s, "help"))
2039 usage();
6224f72b
GS
2040 s--;
2041 /* FALL THROUGH */
2042 default:
cea2e8a9 2043 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2044 }
2045 }
c7030b81
NC
2046 }
2047
6224f72b 2048 switch_end:
54310121 2049
c7030b81
NC
2050 {
2051 char *s;
2052
f675dbe5
CB
2053 if (
2054#ifndef SECURE_INTERNAL_GETENV
284167a5 2055 !TAINTING_get &&
f675dbe5 2056#endif
cf756827 2057 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2058 {
74288ac8
GS
2059 while (isSPACE(*s))
2060 s++;
317ea90d 2061 if (*s == '-' && *(s+1) == 'T') {
284167a5
SM
2062#if SILENT_NO_TAINT_SUPPORT
2063 /* silently ignore */
2064#elif NO_TAINT_SUPPORT
3231f579 2065 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2066 "Cowardly refusing to run with -t or -T flags");
2067#else
22f7c9c9 2068 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2069 TAINTING_set(TRUE);
2070 TAINT_WARN_set(FALSE);
2071#endif
317ea90d 2072 }
74288ac8 2073 else {
bd61b366 2074 char *popt_copy = NULL;
74288ac8 2075 while (s && *s) {
54913509 2076 const char *d;
74288ac8
GS
2077 while (isSPACE(*s))
2078 s++;
2079 if (*s == '-') {
2080 s++;
2081 if (isSPACE(*s))
2082 continue;
2083 }
4ea8f8fb 2084 d = s;
74288ac8
GS
2085 if (!*s)
2086 break;
2b622f1a 2087 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2088 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2089 while (++s && *s) {
2090 if (isSPACE(*s)) {
cf756827 2091 if (!popt_copy) {
bfa6c418
NC
2092 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2093 s = popt_copy + (s - d);
2094 d = popt_copy;
cf756827 2095 }
4ea8f8fb
MS
2096 *s++ = '\0';
2097 break;
2098 }
2099 }
1c4db469 2100 if (*d == 't') {
284167a5
SM
2101#if SILENT_NO_TAINT_SUPPORT
2102 /* silently ignore */
2103#elif NO_TAINT_SUPPORT
3231f579 2104 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2105 "Cowardly refusing to run with -t or -T flags");
2106#else
2107 if( !TAINTING_get) {
2108 TAINT_WARN_set(TRUE);
2109 TAINTING_set(TRUE);
317ea90d 2110 }
284167a5 2111#endif
1c4db469 2112 } else {
97bd5664 2113 moreswitches(d);
1c4db469 2114 }
6224f72b 2115 }
6224f72b
GS
2116 }
2117 }
c7030b81 2118 }
a0d0e21e 2119
c29067d7
CH
2120 /* Set $^X early so that it can be used for relocatable paths in @INC */
2121 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2122 assert (!TAINT_get);
c29067d7
CH
2123 TAINT;
2124 S_set_caret_X(aTHX);
2125 TAINT_NOT;
2126
43c0c913 2127#if defined(USE_SITECUSTOMIZE)
20ef40cf 2128 if (!minus_f) {
43c0c913 2129 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2130 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2131 ie a q() operator with a NUL byte as a the delimiter. This avoids
2132 problems with pathnames containing (say) ' */
43c0c913
NC
2133# ifdef PERL_IS_MINIPERL
2134 AV *const inc = GvAV(PL_incgv);
2135 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2136
2137 if (inc0) {
15870c5c
NC
2138 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2139 it should be reported immediately as a build failure. */
43c0c913
NC
2140 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2141 Perl_newSVpvf(aTHX_
15870c5c 2142 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} and do q%c%"SVf"/buildcustomize.pl%c || die $@ }",
fc81b718
NC
2143 0, *inc0, 0,
2144 0, *inc0, 0));
43c0c913
NC
2145 }
2146# else
2147 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2148 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2149 if (raw_sitelib) {
2150 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2151 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2152 INCPUSH_CAN_RELOCATE);
2153 const char *const sitelib = SvPVX(sitelib_sv);
2154 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2155 Perl_newSVpvf(aTHX_
2156 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2157 0, sitelib, 0,
2158 0, sitelib, 0));
2159 assert (SvREFCNT(sitelib_sv) == 1);
2160 SvREFCNT_dec(sitelib_sv);
2161 }
43c0c913 2162# endif
20ef40cf
GA
2163 }
2164#endif
2165
6224f72b
GS
2166 if (!scriptname)
2167 scriptname = argv[0];
3280af22 2168 if (PL_e_script) {
6224f72b
GS
2169 argc++,argv--;
2170 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2171 }
bd61b366 2172 else if (scriptname == NULL) {
6224f72b
GS
2173#ifdef MSDOS
2174 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2175 moreswitches("h");
6224f72b
GS
2176#endif
2177 scriptname = "-";
2178 }
2179
284167a5 2180 assert (!TAINT_get);
2cace6ac 2181 init_perllib();
6224f72b 2182
a52eba0e 2183 {
f20b2998 2184 bool suidscript = FALSE;
829372d3 2185
8d113837 2186 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2187 if (!rsfp) {
2188 rsfp = PerlIO_stdin();
87606032 2189 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2190 }
6224f72b 2191
b24bc095 2192 validate_suid(rsfp);
6224f72b 2193
64ca3a65 2194#ifndef PERL_MICRO
a52eba0e
NC
2195# if defined(SIGCHLD) || defined(SIGCLD)
2196 {
2197# ifndef SIGCHLD
2198# define SIGCHLD SIGCLD
2199# endif
2200 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2201 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2202 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2203 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2204 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2205 }
0b5b802d 2206 }
a52eba0e 2207# endif
64ca3a65 2208#endif
0b5b802d 2209
737c24fc 2210 if (doextract) {
faef540c 2211
f20b2998 2212 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2213 setuid scripts. */
2214 forbid_setid('x', suidscript);
f20b2998 2215 /* Hence you can't get here if suidscript is true */
faef540c 2216
95670bde
NC
2217 linestr_sv = newSV_type(SVt_PV);
2218 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2219 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2220 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2221 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2222 }
f4c556ac 2223 }
6224f72b 2224
ea726b52 2225 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2226 CvUNIQUE_on(PL_compcv);
2227
dd2155a4 2228 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2229
dd69841b
BB
2230 PL_isarev = newHV();
2231
0c4f7ff0 2232 boot_core_PerlIO();
6224f72b 2233 boot_core_UNIVERSAL();
e1a479c5 2234 boot_core_mro();
4a5df386 2235 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2236
2237 if (xsinit)
acfe0abc 2238 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2239#ifndef PERL_MICRO
739a0b84 2240#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2241 init_os_extras();
6224f72b 2242#endif
64ca3a65 2243#endif
6224f72b 2244
29209bc5 2245#ifdef USE_SOCKS
1b9c9cf5
DH
2246# ifdef HAS_SOCKS5_INIT
2247 socks5_init(argv[0]);
2248# else
29209bc5 2249 SOCKSinit(argv[0]);
1b9c9cf5 2250# endif
ac27b0f5 2251#endif
29209bc5 2252
6224f72b
GS
2253 init_predump_symbols();
2254 /* init_postdump_symbols not currently designed to be called */
2255 /* more than once (ENV isn't cleared first, for example) */
2256 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2257 if (!PL_do_undump)
6224f72b
GS
2258 init_postdump_symbols(argc,argv,env);
2259
27da23d5
JH
2260 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2261 * or explicitly in some platforms.
085a54d9 2262 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2263 * look like the user wants to use UTF-8. */
a0fd4948 2264#if defined(__SYMBIAN32__)
27da23d5
JH
2265 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2266#endif
e27b5b51 2267# ifndef PERL_IS_MINIPERL
06e66572
JH
2268 if (PL_unicode) {
2269 /* Requires init_predump_symbols(). */
a05d7ebb 2270 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2271 IO* io;
2272 PerlIO* fp;
2273 SV* sv;
2274
a05d7ebb 2275 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2276 * and the default open disciplines. */
a05d7ebb
JH
2277 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2278 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2279 (fp = IoIFP(io)))
2280 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2281 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2282 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2283 (fp = IoOFP(io)))
2284 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2285 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2286 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2287 (fp = IoOFP(io)))
2288 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2289 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2290 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2291 SVt_PV)))) {
a05d7ebb
JH
2292 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2293 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2294 if (in) {
2295 if (out)
76f68e9b 2296 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2297 else
76f68e9b 2298 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2299 }
2300 else if (out)
76f68e9b 2301 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2302 SvSETMAGIC(sv);
2303 }
b310b053
JH
2304 }
2305 }
e27b5b51 2306#endif
b310b053 2307
c7030b81
NC
2308 {
2309 const char *s;
4ffa73a3
JH
2310 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2311 if (strEQ(s, "unsafe"))
2312 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2313 else if (strEQ(s, "safe"))
2314 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2315 else
2316 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2317 }
c7030b81 2318 }
4ffa73a3 2319
81d86705 2320#ifdef PERL_MAD
c7030b81
NC
2321 {
2322 const char *s;
284167a5 2323 if (!TAINTING_get &&
2cc12391 2324 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC
2325 PL_madskills = 1;
2326 PL_minus_c = 1;
2327 if (!s || !s[0])
2328 PL_xmlfp = PerlIO_stdout();
2329 else {
2330 PL_xmlfp = PerlIO_open(s, "w");
2331 if (!PL_xmlfp)
2332 Perl_croak(aTHX_ "Can't open %s", s);
2333 }
1a9a51d4 2334 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2335 }
c7030b81
NC
2336 }
2337
2338 {
2339 const char *s;
81d86705
NC
2340 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2341 PL_madskills = atoi(s);
1a9a51d4 2342 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2343 }
c7030b81 2344 }
81d86705
NC
2345#endif
2346
87606032 2347 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2348 SvREFCNT_dec(linestr_sv);
95670bde 2349
219f7226 2350 PL_subname = newSVpvs("main");
6224f72b 2351
5486870f
DM
2352 if (add_read_e_script)
2353 filter_add(read_e_script, NULL);
2354
6224f72b
GS
2355 /* now parse the script */
2356
93189314 2357 SETERRNO(0,SS_NORMAL);
28ac2b49 2358 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2359 if (PL_minus_c)
cea2e8a9 2360 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2361 else {
cea2e8a9 2362 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2363 PL_origfilename);
6224f72b
GS
2364 }
2365 }
57843af0 2366 CopLINE_set(PL_curcop, 0);
03d9f026 2367 SET_CURSTASH(PL_defstash);
3280af22
NIS
2368 if (PL_e_script) {
2369 SvREFCNT_dec(PL_e_script);
a0714e2c 2370 PL_e_script = NULL;
6224f72b
GS
2371 }
2372
3280af22 2373 if (PL_do_undump)
6224f72b
GS
2374 my_unexec();
2375
57843af0
GS
2376 if (isWARN_ONCE) {
2377 SAVECOPFILE(PL_curcop);
2378 SAVECOPLINE(PL_curcop);
3280af22 2379 gv_check(PL_defstash);
57843af0 2380 }
6224f72b
GS
2381
2382 LEAVE;
2383 FREETMPS;
2384
2385#ifdef MYMALLOC
f6a607bc
RGS
2386 {
2387 const char *s;
6224f72b
GS
2388 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2389 dump_mstats("after compilation:");
f6a607bc 2390 }
6224f72b
GS
2391#endif
2392
2393 ENTER;
febb3a6d 2394 PL_restartjmpenv = NULL;
3280af22 2395 PL_restartop = 0;
312caa8e 2396 return NULL;
6224f72b
GS
2397}
2398
954c1994
GS
2399/*
2400=for apidoc perl_run
2401
2402Tells a Perl interpreter to run. See L<perlembed>.
2403
2404=cut
2405*/
2406
6224f72b 2407int
0cb96387 2408perl_run(pTHXx)
6224f72b 2409{
97aff369 2410 dVAR;
6224f72b 2411 I32 oldscope;
14dd3ad8 2412 int ret = 0;
db36c5a1 2413 dJMPENV;
6224f72b 2414
7918f24d
NC
2415 PERL_ARGS_ASSERT_PERL_RUN;
2416#ifndef MULTIPLICITY
ed6c66dd 2417 PERL_UNUSED_ARG(my_perl);
7918f24d 2418#endif
9d4ba2ae 2419
3280af22 2420 oldscope = PL_scopestack_ix;
96e176bf
CL
2421#ifdef VMS
2422 VMSISH_HUSHED = 0;
2423#endif
6224f72b 2424
14dd3ad8 2425 JMPENV_PUSH(ret);
6224f72b
GS
2426 switch (ret) {
2427 case 1:
2428 cxstack_ix = -1; /* start context stack again */
312caa8e 2429 goto redo_body;
14dd3ad8 2430 case 0: /* normal completion */
14dd3ad8
GS
2431 redo_body:
2432 run_body(oldscope);
14dd3ad8
GS
2433 /* FALL THROUGH */
2434 case 2: /* my_exit() */
3280af22 2435 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2436 LEAVE;
2437 FREETMPS;
03d9f026 2438 SET_CURSTASH(PL_defstash);
3a1ee7e8 2439 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2440 PL_endav && !PL_minus_c) {
ca7b837b 2441 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2442 call_list(oldscope, PL_endav);
9ebf26ad 2443 }
6224f72b
GS
2444#ifdef MYMALLOC
2445 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2446 dump_mstats("after execution: ");
2447#endif
37038d91 2448 ret = STATUS_EXIT;
14dd3ad8 2449 break;
6224f72b 2450 case 3:
312caa8e
CS
2451 if (PL_restartop) {
2452 POPSTACK_TO(PL_mainstack);
2453 goto redo_body;
6224f72b 2454 }
5637ef5b 2455 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2456 FREETMPS;
14dd3ad8
GS
2457 ret = 1;
2458 break;
6224f72b
GS
2459 }
2460
14dd3ad8
GS
2461 JMPENV_POP;
2462 return ret;
312caa8e
CS
2463}
2464
dd374669 2465STATIC void
14dd3ad8
GS
2466S_run_body(pTHX_ I32 oldscope)
2467{
97aff369 2468 dVAR;
d3b97530
DM
2469 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2470 PL_sawampersand ? "Enabling" : "Omitting",
2471 (unsigned int)(PL_sawampersand)));
6224f72b 2472
3280af22 2473 if (!PL_restartop) {
81d86705
NC
2474#ifdef PERL_MAD
2475 if (PL_xmlfp) {
2476 xmldump_all();
2477 exit(0); /* less likely to core dump than my_exit(0) */
2478 }
2479#endif
cf2782cd 2480#ifdef DEBUGGING
f0e3f042
CS
2481 if (DEBUG_x_TEST || DEBUG_B_TEST)
2482 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2483 if (!DEBUG_q_TEST)
2484 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2485#endif
6224f72b 2486
3280af22 2487 if (PL_minus_c) {
bf49b057 2488 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2489 my_exit(0);
2490 }
3280af22 2491 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2492 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2493 if (PL_initav) {
ca7b837b 2494 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2495 call_list(oldscope, PL_initav);
9ebf26ad 2496 }
f1fac472 2497#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2498 if (PL_main_root && PL_main_root->op_slabbed)
2499 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2500#endif
6224f72b
GS
2501 }
2502
2503 /* do it */
2504
ca7b837b 2505 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2506
3280af22 2507 if (PL_restartop) {
febb3a6d 2508 PL_restartjmpenv = NULL;
533c011a 2509 PL_op = PL_restartop;
3280af22 2510 PL_restartop = 0;
cea2e8a9 2511 CALLRUNOPS(aTHX);
6224f72b 2512 }
3280af22
NIS
2513 else if (PL_main_start) {
2514 CvDEPTH(PL_main_cv) = 1;
533c011a 2515 PL_op = PL_main_start;
cea2e8a9 2516 CALLRUNOPS(aTHX);
6224f72b 2517 }
f6b3007c 2518 my_exit(0);
118e2215 2519 assert(0); /* NOTREACHED */
6224f72b
GS
2520}
2521
954c1994 2522/*
ccfc67b7
JH
2523=head1 SV Manipulation Functions
2524
954c1994
GS
2525=for apidoc p||get_sv
2526
64ace3f8
NC
2527Returns the SV of the specified Perl scalar. C<flags> are passed to
2528C<gv_fetchpv>. If C<GV_ADD> is set and the
2529Perl variable does not exist then it will be created. If C<flags> is zero
2530and the variable does not exist then NULL is returned.
954c1994
GS
2531
2532=cut
2533*/
2534
6224f72b 2535SV*
64ace3f8 2536Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2537{
2538 GV *gv;
7918f24d
NC
2539
2540 PERL_ARGS_ASSERT_GET_SV;
2541
64ace3f8 2542 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2543 if (gv)
2544 return GvSV(gv);
a0714e2c 2545 return NULL;
6224f72b
GS
2546}
2547
954c1994 2548/*
ccfc67b7
JH
2549=head1 Array Manipulation Functions
2550
954c1994
GS
2551=for apidoc p||get_av
2552
f0b90de1
SF
2553Returns the AV of the specified Perl global or package array with the given
2554name (so it won't work on lexical variables). C<flags> are passed
2555to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2556Perl variable does not exist then it will be created. If C<flags> is zero
2557and the variable does not exist then NULL is returned.
954c1994 2558
f0b90de1
SF
2559Perl equivalent: C<@{"$name"}>.
2560
954c1994
GS
2561=cut
2562*/
2563
6224f72b 2564AV*
cbfd0a87 2565Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2566{
cbfd0a87 2567 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2568
2569 PERL_ARGS_ASSERT_GET_AV;
2570
cbfd0a87 2571 if (flags)
6224f72b
GS
2572 return GvAVn(gv);
2573 if (gv)
2574 return GvAV(gv);
7d49f689 2575 return NULL;
6224f72b
GS
2576}
2577
954c1994 2578/*
ccfc67b7
JH
2579=head1 Hash Manipulation Functions
2580
954c1994
GS
2581=for apidoc p||get_hv
2582
6673a63c
NC
2583Returns the HV of the specified Perl hash. C<flags> are passed to
2584C<gv_fetchpv>. If C<GV_ADD> is set and the
2585Perl variable does not exist then it will be created. If C<flags> is zero
2586and the variable does not exist then NULL is returned.
954c1994
GS
2587
2588=cut
2589*/
2590
6224f72b 2591HV*
6673a63c 2592Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2593{
6673a63c 2594 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2595
2596 PERL_ARGS_ASSERT_GET_HV;
2597
6673a63c 2598 if (flags)
a0d0e21e
LW
2599 return GvHVn(gv);
2600 if (gv)
2601 return GvHV(gv);
5c284bb0 2602 return NULL;
a0d0e21e
LW
2603}
2604
954c1994 2605/*
ccfc67b7
JH
2606=head1 CV Manipulation Functions
2607
780a5241
NC
2608=for apidoc p||get_cvn_flags
2609
2610Returns the CV of the specified Perl subroutine. C<flags> are passed to
2611C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2612exist then it will be declared (which has the same effect as saying
2613C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2614then NULL is returned.
2615
954c1994
GS
2616=for apidoc p||get_cv
2617
780a5241 2618Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2619
2620=cut
2621*/
2622
a0d0e21e 2623CV*
780a5241 2624Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2625{
780a5241 2626 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2627
2628 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2629
334dda80
FC
2630 /* XXX this is probably not what they think they're getting.
2631 * It has the same effect as "sub name;", i.e. just a forward
2632 * declaration! */
780a5241 2633 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2634 return newSTUB(gv,0);
780a5241 2635 }
a0d0e21e 2636 if (gv)
8ebc5c01 2637 return GvCVu(gv);
601f1833 2638 return NULL;
a0d0e21e
LW
2639}
2640
2c67934f
NC
2641/* Nothing in core calls this now, but we can't replace it with a macro and
2642 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2643CV*
2644Perl_get_cv(pTHX_ const char *name, I32 flags)
2645{
7918f24d
NC
2646 PERL_ARGS_ASSERT_GET_CV;
2647
780a5241
NC
2648 return get_cvn_flags(name, strlen(name), flags);
2649}
2650
79072805
LW
2651/* Be sure to refetch the stack pointer after calling these routines. */
2652
954c1994 2653/*
ccfc67b7
JH
2654
2655=head1 Callback Functions
2656
954c1994
GS
2657=for apidoc p||call_argv
2658
f0b90de1
SF
2659Performs a callback to the specified named and package-scoped Perl subroutine
2660with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2661
2662Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2663
2664=cut
2665*/
2666
a0d0e21e 2667I32
5aaab254 2668Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2669
8ac85365
NIS
2670 /* See G_* flags in cop.h */
2671 /* null terminated arg list */
8990e307 2672{
97aff369 2673 dVAR;
a0d0e21e 2674 dSP;
8990e307 2675
7918f24d
NC
2676 PERL_ARGS_ASSERT_CALL_ARGV;
2677
924508f0 2678 PUSHMARK(SP);
a0d0e21e 2679 if (argv) {
8990e307 2680 while (*argv) {
6e449a3a 2681 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2682 argv++;
2683 }
a0d0e21e 2684 PUTBACK;
8990e307 2685 }
864dbfa3 2686 return call_pv(sub_name, flags);
8990e307
LW
2687}
2688
954c1994
GS
2689/*
2690=for apidoc p||call_pv
2691
2692Performs a callback to the specified Perl sub. See L<perlcall>.
2693
2694=cut
2695*/
2696
a0d0e21e 2697I32
864dbfa3 2698Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2699 /* name of the subroutine */
2700 /* See G_* flags in cop.h */
a0d0e21e 2701{
7918f24d
NC
2702 PERL_ARGS_ASSERT_CALL_PV;
2703
0da0e728 2704 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2705}
2706
954c1994
GS
2707/*
2708=for apidoc p||call_method
2709
2710Performs a callback to the specified Perl method. The blessed object must
2711be on the stack. See L<perlcall>.
2712
2713=cut
2714*/
2715
a0d0e21e 2716I32
864dbfa3 2717Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2718 /* name of the subroutine */
2719 /* See G_* flags in cop.h */
a0d0e21e 2720{
46ca9bac 2721 STRLEN len;
c106c2be 2722 SV* sv;
7918f24d
NC
2723 PERL_ARGS_ASSERT_CALL_METHOD;
2724
46ca9bac 2725 len = strlen(methname);
c106c2be
RZ
2726 sv = flags & G_METHOD_NAMED
2727 ? sv_2mortal(newSVpvn_share(methname, len,0))
2728 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2729
c106c2be 2730 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2731}
2732
2733/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2734/*
2735=for apidoc p||call_sv
2736
2737Performs a callback to the Perl sub whose name is in the SV. See
2738L<perlcall>.
2739
2740=cut
2741*/
2742
a0d0e21e 2743I32
001d637e 2744Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2745 /* See G_* flags in cop.h */
a0d0e21e 2746{
27da23d5 2747 dVAR; dSP;
a0d0e21e 2748 LOGOP myop; /* fake syntax tree node */
c106c2be
RZ
2749 UNOP method_unop;
2750 SVOP method_svop;
aa689395 2751 I32 oldmark;
8ea43dc8 2752 VOL I32 retval = 0;
a0d0e21e 2753 I32 oldscope;
54310121 2754 bool oldcatch = CATCH_GET;
6224f72b 2755 int ret;
c4420975 2756 OP* const oldop = PL_op;
db36c5a1 2757 dJMPENV;
1e422769 2758
7918f24d
NC
2759 PERL_ARGS_ASSERT_CALL_SV;
2760
a0d0e21e
LW
2761 if (flags & G_DISCARD) {
2762 ENTER;
2763 SAVETMPS;
2764 }
2f8edad0
NC
2765 if (!(flags & G_WANT)) {
2766 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2767 */
2768 flags |= G_SCALAR;
2769 }
a0d0e21e 2770
aa689395 2771 Zero(&myop, 1, LOGOP);
f51d4af5 2772 if (!(flags & G_NOARGS))
aa689395 2773 myop.op_flags |= OPf_STACKED;
4f911530 2774 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2775 SAVEOP();
533c011a 2776 PL_op = (OP*)&myop;
aa689395 2777
3280af22 2778 EXTEND(PL_stack_sp, 1);
c106c2be
RZ
2779 if (!(flags & G_METHOD_NAMED))
2780 *++PL_stack_sp = sv;
aa689395 2781 oldmark = TOPMARK;
3280af22 2782 oldscope = PL_scopestack_ix;
a0d0e21e 2783
3280af22 2784 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2785 /* Handle first BEGIN of -d. */
3280af22 2786 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2787 /* Try harder, since this may have been a sighandler, thus
2788 * curstash may be meaningless. */
ea726b52 2789 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2790 && !(flags & G_NODEBUG))
5ff48db8 2791 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2792
c106c2be
RZ
2793 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2794 if ( flags & G_METHOD_NAMED ) {
2795 Zero(&method_svop, 1, SVOP);
2796 method_svop.op_next = (OP*)&myop;
2797 method_svop.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2798 method_svop.op_type = OP_METHOD_NAMED;
2799 method_svop.op_sv = sv;
2800 PL_op = (OP*)&method_svop;
2801 } else {
2802 Zero(&method_unop, 1, UNOP);
2803 method_unop.op_next = (OP*)&myop;
2804 method_unop.op_ppaddr = PL_ppaddr[OP_METHOD];
2805 method_unop.op_type = OP_METHOD;
2806 PL_op = (OP*)&method_unop;
2807 }
2808 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2809 myop.op_type = OP_ENTERSUB;
2810
968b3946
GS
2811 }
2812
312caa8e 2813 if (!(flags & G_EVAL)) {
0cdb2077 2814 CATCH_SET(TRUE);
d6f07c05 2815 CALL_BODY_SUB((OP*)&myop);
312caa8e 2816 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2817 CATCH_SET(oldcatch);
312caa8e
CS
2818 }
2819 else {
d78bda3d 2820 myop.op_other = (OP*)&myop;
3280af22 2821 PL_markstack_ptr--;
edb2152a 2822 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2823 PL_markstack_ptr++;
a0d0e21e 2824
14dd3ad8 2825 JMPENV_PUSH(ret);
edb2152a 2826
6224f72b
GS
2827 switch (ret) {
2828 case 0:
14dd3ad8 2829 redo_body:
d6f07c05 2830 CALL_BODY_SUB((OP*)&myop);
312caa8e 2831 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2832 if (!(flags & G_KEEPERR)) {
ab69dbc2 2833 CLEAR_ERRSV();
8433848b 2834 }
a0d0e21e 2835 break;
6224f72b 2836 case 1:
f86702cc 2837 STATUS_ALL_FAILURE;
a0d0e21e 2838 /* FALL THROUGH */
6224f72b 2839 case 2:
a0d0e21e 2840 /* my_exit() was called */
03d9f026 2841 SET_CURSTASH(PL_defstash);
a0d0e21e 2842 FREETMPS;
14dd3ad8 2843 JMPENV_POP;
f86702cc 2844 my_exit_jump();
118e2215 2845 assert(0); /* NOTREACHED */
6224f72b 2846 case 3:
3280af22 2847 if (PL_restartop) {
febb3a6d 2848 PL_restartjmpenv = NULL;
533c011a 2849 PL_op = PL_restartop;
3280af22 2850 PL_restartop = 0;
312caa8e 2851 goto redo_body;
a0d0e21e 2852 }
3280af22 2853 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2854 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2855 retval = 0;
2856 else {
2857 retval = 1;
3280af22 2858 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2859 }
312caa8e 2860 break;
a0d0e21e 2861 }
a0d0e21e 2862
edb2152a
NC
2863 if (PL_scopestack_ix > oldscope)
2864 delete_eval_scope();
14dd3ad8 2865 JMPENV_POP;
a0d0e21e 2866 }
1e422769 2867
a0d0e21e 2868 if (flags & G_DISCARD) {
3280af22 2869 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2870 retval = 0;
2871 FREETMPS;
2872 LEAVE;
2873 }
533c011a 2874 PL_op = oldop;
a0d0e21e
LW
2875 return retval;
2876}
2877
6e72f9df 2878/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2879
954c1994
GS
2880/*
2881=for apidoc p||eval_sv
2882
be064c4a
DM
2883Tells Perl to C<eval> the string in the SV. It supports the same flags
2884as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2885
2886=cut
2887*/
2888
a0d0e21e 2889I32
864dbfa3 2890Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2891
8ac85365 2892 /* See G_* flags in cop.h */
a0d0e21e 2893{
97aff369 2894 dVAR;
924508f0 2895 dSP;
a0d0e21e 2896 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2897 VOL I32 oldmark = SP - PL_stack_base;
2898 VOL I32 retval = 0;
6224f72b 2899 int ret;
c4420975 2900 OP* const oldop = PL_op;
db36c5a1 2901 dJMPENV;
84902520 2902
7918f24d
NC
2903 PERL_ARGS_ASSERT_EVAL_SV;
2904
4633a7c4
LW
2905 if (flags & G_DISCARD) {
2906 ENTER;
2907 SAVETMPS;
2908 }
2909
462e5cf6 2910 SAVEOP();
533c011a 2911 PL_op = (OP*)&myop;
5ff48db8 2912 Zero(&myop, 1, UNOP);
3280af22
NIS
2913 EXTEND(PL_stack_sp, 1);
2914 *++PL_stack_sp = sv;
79072805 2915
4633a7c4
LW
2916 if (!(flags & G_NOARGS))
2917 myop.op_flags = OPf_STACKED;
6e72f9df 2918 myop.op_type = OP_ENTEREVAL;
4f911530 2919 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2920 if (flags & G_KEEPERR)
2921 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2922
2923 if (flags & G_RE_REPARSING)
2924 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2925
dedbcade
DM
2926 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2927 * before a PUSHEVAL, which corrupts the stack after a croak */
2928 TAINT_PROPER("eval_sv()");
2929
14dd3ad8 2930 JMPENV_PUSH(ret);
6224f72b
GS
2931 switch (ret) {
2932 case 0:
14dd3ad8 2933 redo_body:
2ba65d5f
DM
2934 if (PL_op == (OP*)(&myop)) {
2935 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2936 if (!PL_op)
2937 goto fail; /* failed in compilation */
2938 }
4aca2f62 2939 CALLRUNOPS(aTHX);
312caa8e 2940 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2941 if (!(flags & G_KEEPERR)) {
ab69dbc2 2942 CLEAR_ERRSV();
8433848b 2943 }
4633a7c4 2944 break;
6224f72b 2945 case 1:
f86702cc 2946 STATUS_ALL_FAILURE;
4633a7c4 2947 /* FALL THROUGH */
6224f72b 2948 case 2:
4633a7c4 2949 /* my_exit() was called */
03d9f026 2950 SET_CURSTASH(PL_defstash);
4633a7c4 2951 FREETMPS;
14dd3ad8 2952 JMPENV_POP;
f86702cc 2953 my_exit_jump();
118e2215 2954 assert(0); /* NOTREACHED */
6224f72b 2955 case 3:
3280af22 2956 if (PL_restartop) {
febb3a6d 2957 PL_restartjmpenv = NULL;
533c011a 2958 PL_op = PL_restartop;
3280af22 2959 PL_restartop = 0;
312caa8e 2960 goto redo_body;
4633a7c4 2961 }
4aca2f62 2962 fail:
3280af22 2963 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2964 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2965 retval = 0;
2966 else {
2967 retval = 1;
3280af22 2968 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2969 }
312caa8e 2970 break;
4633a7c4
LW
2971 }
2972
14dd3ad8 2973 JMPENV_POP;
4633a7c4 2974 if (flags & G_DISCARD) {
3280af22 2975 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2976 retval = 0;
2977 FREETMPS;
2978 LEAVE;
2979 }
533c011a 2980 PL_op = oldop;
4633a7c4
LW
2981 return retval;
2982}
2983
954c1994
GS
2984/*
2985=for apidoc p||eval_pv
2986
2987Tells Perl to C<eval> the given string and return an SV* result.
2988
2989=cut
2990*/
2991
137443ea 2992SV*
864dbfa3 2993Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2994{
97aff369 2995 dVAR;
137443ea
PP
2996 SV* sv = newSVpv(p, 0);
2997
7918f24d
NC
2998 PERL_ARGS_ASSERT_EVAL_PV;
2999
864dbfa3 3000 eval_sv(sv, G_SCALAR);
137443ea
PP
3001 SvREFCNT_dec(sv);
3002
ed1786ad
DD
3003 {
3004 dSP;
3005 sv = POPs;
3006 PUTBACK;
3007 }
137443ea 3008
eed484f9
DD
3009 /* just check empty string or undef? */
3010 if (croak_on_error) {
3011 SV * const errsv = ERRSV;
3012 if(SvTRUE_NN(errsv))
3013 /* replace with croak_sv? */
3014 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 3015 }
137443ea
PP
3016
3017 return sv;
3018}
3019
4633a7c4
LW
3020/* Require a module. */
3021
954c1994 3022/*
ccfc67b7
JH
3023=head1 Embedding Functions
3024
954c1994
GS
3025=for apidoc p||require_pv
3026
7d3fb230
BS
3027Tells Perl to C<require> the file named by the string argument. It is
3028analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 3029implemented that way; consider using load_module instead.
954c1994 3030
7d3fb230 3031=cut */
954c1994 3032
4633a7c4 3033void
864dbfa3 3034Perl_require_pv(pTHX_ const char *pv)
4633a7c4 3035{
97aff369 3036 dVAR;
d3acc0f7 3037 dSP;
97aff369 3038 SV* sv;
7918f24d
NC
3039
3040 PERL_ARGS_ASSERT_REQUIRE_PV;
3041
e788e7d3 3042 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 3043 PUTBACK;
be41e5d9
NC
3044 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3045 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
3046 SPAGAIN;
3047 POPSTACK;
79072805
LW
3048}
3049
76e3520e 3050STATIC void
b6f82619 3051S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 3052{
ab821d7f 3053 /* This message really ought to be max 23 lines.
75c72d73 3054 * Removed -h because the user already knows that option. Others? */
fb73857a 3055
1566c39d
NC
3056 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3057 minimum of 509 character string literals. */
27da23d5 3058 static const char * const usage_msg[] = {
1566c39d
NC
3059" -0[octal] specify record separator (\\0, if no argument)\n"
3060" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3061" -C[number/list] enables the listed Unicode features\n"
3062" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3063" -d[:debugger] run program under debugger\n"
3064" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3065" -e program one line of program (several -e's allowed, omit programfile)\n"
3066" -E program like -e, but enables all optional features\n"
3067" -f don't do $sitelib/sitecustomize.pl at startup\n"
3068" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3069" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3070" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3071" -l[octal] enable line ending processing, specifies line terminator\n"
3072" -[mM][-]module execute \"use/no module...\" before executing program\n"
3073" -n assume \"while (<>) { ... }\" loop around program\n"
3074" -p assume loop like -n but print line also, like sed\n"
3075" -s enable rudimentary parsing for switches after programfile\n"
3076" -S look for programfile using PATH environment variable\n",
3077" -t enable tainting warnings\n"
3078" -T enable tainting checks\n"
3079" -u dump core after parsing program\n"
3080" -U allow unsafe operations\n"
3081" -v print version, patchlevel and license\n"
3082" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3083" -w enable many useful warnings\n"
1566c39d
NC
3084" -W enable all warnings\n"
3085" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3086" -X disable all warnings\n"
3087" \n"
3088"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3089NULL
3090};
27da23d5 3091 const char * const *p = usage_msg;
1566c39d 3092 PerlIO *out = PerlIO_stdout();
fb73857a 3093
1566c39d
NC
3094 PerlIO_printf(out,
3095 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3096 PL_origargv[0]);
fb73857a 3097 while (*p)
1566c39d 3098 PerlIO_puts(out, *p++);
b6f82619 3099 my_exit(0);
4633a7c4
LW
3100}
3101
b4ab917c
DM
3102/* convert a string of -D options (or digits) into an int.
3103 * sets *s to point to the char after the options */
3104
3105#ifdef DEBUGGING
3106int
e1ec3a88 3107Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3108{
27da23d5 3109 static const char * const usage_msgd[] = {
651b8f1a
NC
3110 " Debugging flag values: (see also -d)\n"
3111 " p Tokenizing and parsing (with v, displays parse stack)\n"
3112 " s Stack snapshots (with v, displays all stacks)\n"
3113 " l Context (loop) stack processing\n"
3114 " t Trace execution\n"
3115 " o Method and overloading resolution\n",
3116 " c String/numeric conversions\n"
3117 " P Print profiling info, source file input state\n"
3118 " m Memory and SV allocation\n"
3119 " f Format processing\n"
3120 " r Regular expression parsing and execution\n"
3121 " x Syntax tree dump\n",
3122 " u Tainting checks\n"
3123 " H Hash dump -- usurps values()\n"
3124 " X Scratchpad allocation\n"
3125 " D Cleaning up\n"
56967202 3126 " S Op slab allocation\n"
651b8f1a
NC
3127 " T Tokenising\n"
3128 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3129 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3130 " v Verbose: use in conjunction with other flags\n"
3131 " C Copy On Write\n"
3132 " A Consistency checks on internal structures\n"
3133 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3134 " M trace smart match resolution\n"
3135 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3136 NULL
3137 };
b4ab917c 3138 int i = 0;
7918f24d
NC
3139
3140 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3141
b4ab917c
DM
3142 if (isALPHA(**s)) {
3143 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3144 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c 3145
0eb30aeb 3146 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3147 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3148 if (d)
3149 i |= 1 << (d - debopts);
3150 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3151 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3152 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3153 }
3154 }
e6e64d9b 3155 else if (isDIGIT(**s)) {
b4ab917c 3156 i = atoi(*s);
0eb30aeb 3157 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3158 }
ddcf8bc1 3159 else if (givehelp) {
06e869a4 3160 const char *const *p = usage_msgd;
651b8f1a 3161 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3162 }
b4ab917c
DM
3163# ifdef EBCDIC
3164 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3165 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3166 "-Dp not implemented on this platform\n");
3167# endif
3168 return i;
3169}
3170#endif
3171
79072805
LW
3172/* This routine handles any switches that can be given during run */
3173
c7030b81
NC
3174const char *
3175Perl_moreswitches(pTHX_ const char *s)
79072805 3176{
27da23d5 3177 dVAR;
84c133a0 3178 UV rschar;
0544e6df 3179 const char option = *s; /* used to remember option in -m/-M code */
79072805 3180
7918f24d
NC
3181 PERL_ARGS_ASSERT_MORESWITCHES;
3182
79072805
LW
3183 switch (*s) {
3184 case '0':
a863c7d1 3185 {
f2095865 3186 I32 flags = 0;
a3b680e6 3187 STRLEN numlen;
f2095865
JH
3188
3189 SvREFCNT_dec(PL_rs);
3190 if (s[1] == 'x' && s[2]) {
a3b680e6 3191 const char *e = s+=2;
f2095865
JH
3192 U8 *tmps;
3193
a3b680e6
AL
3194 while (*e)
3195 e++;
f2095865
JH
3196 numlen = e - s;
3197 flags = PERL_SCAN_SILENT_ILLDIGIT;
3198 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3199 if (s + numlen < e) {
3200 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3201 numlen = 0;
3202 s--;
3203 }
396482e1 3204 PL_rs = newSVpvs("");
c5661c80 3205 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3206 tmps = (U8*)SvPVX(PL_rs);
3207 uvchr_to_utf8(tmps, rschar);
3208 SvCUR_set(PL_rs, UNISKIP(rschar));
3209 SvUTF8_on(PL_rs);
3210 }
3211 else {
3212 numlen = 4;
3213 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3214 if (rschar & ~((U8)~0))
3215 PL_rs = &PL_sv_undef;
3216 else if (!rschar && numlen >= 2)
396482e1 3217 PL_rs = newSVpvs("");
f2095865
JH
3218 else {
3219 char ch = (char)rschar;
3220 PL_rs = newSVpvn(&ch, 1);
3221 }
3222 }
64ace3f8 3223 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3224 return s + numlen;
a863c7d1 3225 }
46487f74 3226 case 'C':
a05d7ebb 3227 s++;
dd374669 3228 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3229 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3230 PL_utf8cache = -1;
46487f74 3231 return s;
2304df62 3232 case 'F':
5fc691f1 3233 PL_minus_a = TRUE;
3280af22 3234 PL_minus_F = TRUE;
24ffa309 3235 PL_minus_n = TRUE;
ebce5377
RGS
3236 PL_splitstr = ++s;
3237 while (*s && !isSPACE(*s)) ++s;
e49e380e 3238 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3239 return s;
79072805 3240 case 'a':
3280af22 3241 PL_minus_a = TRUE;
24ffa309 3242 PL_minus_n = TRUE;
79072805
LW
3243 s++;
3244 return s;
3245 case 'c':
3280af22 3246 PL_minus_c = TRUE;
79072805
LW
3247 s++;
3248 return s;
3249 case 'd':
f20b2998 3250 forbid_setid('d', FALSE);
4633a7c4 3251 s++;
2cbb2ee1
RGS
3252
3253 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3254 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3255 ++s;
3256 my_setenv("PERL5DB_THREADED", "1");
3257 }
3258
70c94a19
RR
3259 /* The following permits -d:Mod to accepts arguments following an =
3260 in the fashion that -MSome::Mod does. */
3261 if (*s == ':' || *s == '=') {
b19934fb
NC
3262 const char *start;
3263 const char *end;
3264 SV *sv;
3265
3266 if (*++s == '-') {
3267 ++s;
3268 sv = newSVpvs("no Devel::");
3269 } else {
3270 sv = newSVpvs("use Devel::");
3271 }
3272
3273 start = s;
3274 end = s + strlen(s);
f85893a1 3275
b19934fb 3276 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3277 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3278 if (*s != '=')
f85893a1 3279 sv_catpvn(sv, start, end - start);
70c94a19
RR
3280 else {
3281 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3282 /* Don't use NUL as q// delimiter here, this string goes in the
3283 * environment. */
3284 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3285 }
f85893a1 3286 s = end;
184f32ec 3287 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3288 SvREFCNT_dec(sv);
4633a7c4 3289 }
ed094faf 3290 if (!PL_perldb) {
3280af22 3291 PL_perldb = PERLDB_ALL;
a0d0e21e 3292 init_debugger();
ed094faf 3293 }
79072805
LW
3294 return s;
3295 case 'D':
0453d815 3296 {
79072805 3297#ifdef DEBUGGING
f20b2998 3298 forbid_setid('D', FALSE);
b4ab917c 3299 s++;
dd374669 3300 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3301#else /* !DEBUGGING */
0453d815 3302 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3303 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3304 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3305 for (s++; isWORDCHAR(*s); s++) ;
79072805 3306#endif
79072805 3307 return s;
0453d815 3308 }
4633a7c4 3309 case 'h':
b6f82619 3310 usage();
79072805 3311 case 'i':
43c5f42d 3312 Safefree(PL_inplace);
c030f24b
GH
3313#if defined(__CYGWIN__) /* do backup extension automagically */
3314 if (*(s+1) == '\0') {
c86a4f2e 3315 PL_inplace = savepvs(".bak");
c030f24b
GH
3316 return s+1;
3317 }
3318#endif /* __CYGWIN__ */
5ef5d758 3319 {
d4c19fe8 3320 const char * const start = ++s;
5ef5d758
NC
3321 while (*s && !isSPACE(*s))
3322 ++s;
3323
3324 PL_inplace = savepvn(start, s - start);
3325 }
7b8d334a 3326 if (*s) {
5ef5d758 3327 ++s;
7b8d334a 3328 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3329 s++;
7b8d334a 3330 }
fb73857a 3331 return s;
4e49a025 3332 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3333 forbid_setid('I', FALSE);
fb73857a
PP
3334 ++s;
3335 while (*s && isSPACE(*s))
3336 ++s;
3337 if (*s) {
c7030b81 3338 const char *e, *p;
0df16ed7
GS
3339 p = s;
3340 /* ignore trailing spaces (possibly followed by other switches) */
3341 do {
3342 for (e = p; *e && !isSPACE(*e); e++) ;
3343 p = e;
3344 while (isSPACE(*p))
3345 p++;
3346 } while (*p && *p != '-');
55b4bc1c 3347 incpush(s, e-s,
e28f3139 3348 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3349 s = p;
3350 if (*s == '-')
3351 s++;
79072805
LW
3352 }
3353 else
a67e862a 3354 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3355 return s;
79072805 3356 case 'l':
3280af22 3357 PL_minus_l = TRUE;
79072805 3358 s++;
7889fe52
NIS
3359 if (PL_ors_sv) {
3360 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3361 PL_ors_sv = NULL;
7889fe52 3362 }
79072805 3363 if (isDIGIT(*s)) {
53305cf1 3364 I32 flags = 0;
a3b680e6 3365 STRLEN numlen;
396482e1 3366 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3367 numlen = 3 + (*s == '0');
3368 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3369 s += numlen;
3370 }
3371 else {
8bfdd7d9 3372 if (RsPARA(PL_rs)) {
396482e1 3373 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3374 }
3375 else {
8bfdd7d9 3376 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3377 }
79072805
LW
3378 }
3379 return s;
1a30305b 3380 case 'M':
f20b2998 3381 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3382 /* FALL THROUGH */
3383 case 'm':
f20b2998 3384 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3385 if (*++s) {
c7030b81 3386 const char *start;
b64cb68c 3387 const char *end;
11343788 3388 SV *sv;
e1ec3a88 3389 const char *use = "use ";
0544e6df 3390 bool colon = FALSE;
a5f75d66 3391 /* -M-foo == 'no foo' */
d0043bd1
NC
3392 /* Leading space on " no " is deliberate, to make both
3393 possibilities the same length. */
3394 if (*s == '-') { use = " no "; ++s; }
3395 sv = newSVpvn(use,4);
a5f75d66 3396 start = s;
1a30305b 3397 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3398 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3399 if( *s++ == ':' ) {
3400 if( *s == ':' )
3401 s++;
3402 else
3403 colon = TRUE;
3404 }
3405 }
3406 if (s == start)
3407 Perl_croak(aTHX_ "Module name required with -%c option",
3408 option);
3409 if (colon)
3410 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3411 "contains single ':'",
63da6837 3412 (int)(s - start), start, option);
b64cb68c 3413 end = s + strlen(s);
c07a80fd 3414 if (*s != '=') {
b64cb68c 3415 sv_catpvn(sv, start, end - start);
0544e6df 3416 if (option == 'm') {
c07a80fd 3417 if (*s != '\0')
cea2e8a9 3418 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3419 sv_catpvs( sv, " ()");
c07a80fd
PP
3420 }
3421 } else {
11343788 3422 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3423 /* Use NUL as q''-delimiter. */
3424 sv_catpvs(sv, " split(/,/,q\0");
3425 ++s;
3426 sv_catpvn(sv, s, end - s);
396482e1 3427 sv_catpvs(sv, "\0)");
c07a80fd 3428 }
b64cb68c 3429 s = end;
29a861e7 3430 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3431 }
3432 else
0544e6df 3433 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3434 return s;
79072805 3435 case 'n':
3280af22 3436 PL_minus_n = TRUE;
79072805
LW
3437 s++;
3438 return s;
3439 case 'p':
3280af22 3440 PL_minus_p = TRUE;
79072805
LW
3441 s++;
3442 return s;
3443 case 's':
f20b2998 3444 forbid_setid('s', FALSE);
3280af22 3445 PL_doswitches = TRUE;
79072805
LW
3446 s++;
3447 return s;
6537fe72 3448 case 't':
27a6968b 3449 case 'T':
284167a5
SM
3450#if SILENT_NO_TAINT_SUPPORT
3451 /* silently ignore */
3452#elif NO_TAINT_SUPPORT
3231f579 3453 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3454 "Cowardly refusing to run with -t or -T flags");
3455#else
3456 if (!TAINTING_get)
27a6968b 3457 TOO_LATE_FOR(*s);
284167a5 3458#endif
6537fe72 3459 s++;
463ee0b2 3460 return s;
79072805 3461 case 'u':
3280af22 3462 PL_do_undump = TRUE;
79072805
LW
3463 s++;
3464 return s;
3465 case 'U':
3280af22 3466 PL_unsafe = TRUE;
79072805
LW
3467 s++;
3468 return s;
3469 case 'v':
c4bc78d9
NC
3470 minus_v();
3471 case 'w':
3472 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3473 PL_dowarn |= G_WARN_ON;
3474 }
3475 s++;
3476 return s;
3477 case 'W':
3478 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3479 if (!specialWARN(PL_compiling.cop_warnings))
3480 PerlMemShared_free(PL_compiling.cop_warnings);
3481 PL_compiling.cop_warnings = pWARN_ALL ;
3482 s++;
3483 return s;
3484 case 'X':
3485 PL_dowarn = G_WARN_ALL_OFF;
3486 if (!specialWARN(PL_compiling.cop_warnings))
3487 PerlMemShared_free(PL_compiling.cop_warnings);
3488 PL_compiling.cop_warnings = pWARN_NONE ;
3489 s++;
3490 return s;
3491 case '*':
3492 case ' ':
3493 while( *s == ' ' )
3494 ++s;
3495 if (s[0] == '-') /* Additional switches on #! line. */
3496 return s+1;
3497 break;
3498 case '-':
3499 case 0:
3500#if defined(WIN32) || !defined(PERL_STRICT_CR)
3501 case '\r':
3502#endif
3503 case '\n':
3504 case '\t':
3505 break;
3506#ifdef ALTERNATE_SHEBANG
3507 case 'S': /* OS/2 needs -S on "extproc" line. */
3508 break;
3509#endif
4bb78d63
CB
3510 case 'e': case 'f': case 'x': case 'E':
3511#ifndef ALTERNATE_SHEBANG
3512 case 'S':
3513#endif
3514 case 'V':
c4bc78d9 3515 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3516 default:
3517 Perl_croak(aTHX_
3518 "Unrecognized switch: -%.1s (-h will show valid options)",s
3519 );
c4bc78d9
NC
3520 }
3521 return NULL;
3522}
3523
3524
3525STATIC void
3526S_minus_v(pTHX)
3527{
fc3381af 3528 PerlIO * PIO_stdout;
d7aa5382 3529 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3530 upg_version(PL_patchlevel, TRUE);
46807d8e
YO
3531 {
3532 SV* level= vstringify(PL_patchlevel);
3533#ifdef PERL_PATCHNUM
23d483e2
NC
3534# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3535 SV *num = newSVpvs(PERL_PATCHNUM "*");
3536# else
3537 SV *num = newSVpvs(PERL_PATCHNUM);
3538# endif
fc3381af
DD
3539 {