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4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
39#endif
40
2982a345
NC
41#ifdef USE_KERN_PROC_PATHNAME
42# include <sys/sysctl.h>
43#endif
44
ae60cb46
NC
45#ifdef USE_NSGETEXECUTABLEPATH
46# include <mach-o/dyld.h>
47#endif
48
2aa47728 49#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
50# ifdef I_SYSUIO
51# include <sys/uio.h>
52# endif
53
54union control_un {
55 struct cmsghdr cm;
56 char control[CMSG_SPACE(sizeof(int))];
57};
58
2aa47728
NC
59#endif
60
5311654c
JH
61#ifdef __BEOS__
62# define HZ 1000000
63#endif
64
65#ifndef HZ
66# ifdef CLK_TCK
67# define HZ CLK_TCK
68# else
69# define HZ 60
70# endif
71#endif
72
7114a2d2 73#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 74char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
75#endif
76
acfe0abc 77static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 78
cc69b689 79#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 80# define validate_suid(rsfp) NOOP
cc69b689 81#else
b24bc095 82# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 83#endif
8d063cd8 84
d6f07c05
AL
85#define CALL_BODY_SUB(myop) \
86 if (PL_op == (myop)) \
139d0ce6 87 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
88 if (PL_op) \
89 CALLRUNOPS(aTHX);
90
91#define CALL_LIST_BODY(cv) \
92 PUSHMARK(PL_stack_sp); \
9a8aa25b 93 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 94
e6827a76 95static void
daa7d858 96S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 97{
27da23d5 98 dVAR;
e6827a76
NC
99 if (!PL_curinterp) {
100 PERL_SET_INTERP(my_perl);
3db8f154 101#if defined(USE_ITHREADS)
e6827a76
NC
102 INIT_THREADS;
103 ALLOC_THREAD_KEY;
104 PERL_SET_THX(my_perl);
105 OP_REFCNT_INIT;
e8570548 106 OP_CHECK_MUTEX_INIT;
71ad1b0c 107 HINTS_REFCNT_INIT;
e6827a76 108 MUTEX_INIT(&PL_dollarzero_mutex);
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DM
109 MUTEX_INIT(&PL_my_ctx_mutex);
110# endif
e6827a76 111 }
c0bce9aa
NC
112#if defined(USE_ITHREADS)
113 else
114#else
115 /* This always happens for non-ithreads */
116#endif
117 {
e6827a76
NC
118 PERL_SET_THX(my_perl);
119 }
120}
06d86050 121
cbec8ebe
DM
122
123/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
124
125void
126Perl_sys_init(int* argc, char*** argv)
127{
4fc0badb 128 dVAR;
7918f24d
NC
129
130 PERL_ARGS_ASSERT_SYS_INIT;
131
cbec8ebe
DM
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_SYS_INIT_BODY(argc, argv);
135}
136
137void
138Perl_sys_init3(int* argc, char*** argv, char*** env)
139{
4fc0badb 140 dVAR;
7918f24d
NC
141
142 PERL_ARGS_ASSERT_SYS_INIT3;
143
cbec8ebe
DM
144 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
145 PERL_UNUSED_ARG(argv);
146 PERL_UNUSED_ARG(env);
147 PERL_SYS_INIT3_BODY(argc, argv, env);
148}
149
150void
d0820ef1 151Perl_sys_term()
cbec8ebe 152{
4fc0badb 153 dVAR;
bf81751b
DM
154 if (!PL_veto_cleanup) {
155 PERL_SYS_TERM_BODY();
156 }
cbec8ebe
DM
157}
158
159
32e30700
GS
160#ifdef PERL_IMPLICIT_SYS
161PerlInterpreter *
7766f137
GS
162perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
163 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
164 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
165 struct IPerlDir* ipD, struct IPerlSock* ipS,
166 struct IPerlProc* ipP)
167{
168 PerlInterpreter *my_perl;
7918f24d
NC
169
170 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
171
9f653bb5 172 /* Newx() needs interpreter, so call malloc() instead */
32e30700 173 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 174 S_init_tls_and_interp(my_perl);
32e30700
GS
175 Zero(my_perl, 1, PerlInterpreter);
176 PL_Mem = ipM;
7766f137
GS
177 PL_MemShared = ipMS;
178 PL_MemParse = ipMP;
32e30700
GS
179 PL_Env = ipE;
180 PL_StdIO = ipStd;
181 PL_LIO = ipLIO;
182 PL_Dir = ipD;
183 PL_Sock = ipS;
184 PL_Proc = ipP;
7cb608b5 185 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 186
32e30700
GS
187 return my_perl;
188}
189#else
954c1994
GS
190
191/*
ccfc67b7
JH
192=head1 Embedding Functions
193
954c1994
GS
194=for apidoc perl_alloc
195
196Allocates a new Perl interpreter. See L<perlembed>.
197
198=cut
199*/
200
93a17b20 201PerlInterpreter *
cea2e8a9 202perl_alloc(void)
79072805 203{
cea2e8a9 204 PerlInterpreter *my_perl;
79072805 205
9f653bb5 206 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 207 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 208
e6827a76 209 S_init_tls_and_interp(my_perl);
7cb608b5 210#ifndef PERL_TRACK_MEMPOOL
07409e01 211 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
212#else
213 Zero(my_perl, 1, PerlInterpreter);
214 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
215 return my_perl;
216#endif
79072805 217}
32e30700 218#endif /* PERL_IMPLICIT_SYS */
79072805 219
954c1994
GS
220/*
221=for apidoc perl_construct
222
223Initializes a new Perl interpreter. See L<perlembed>.
224
225=cut
226*/
227
79072805 228void
0cb96387 229perl_construct(pTHXx)
79072805 230{
27da23d5 231 dVAR;
7918f24d
NC
232
233 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
234
8990e307 235#ifdef MULTIPLICITY
54aff467 236 init_interp();
ac27b0f5 237 PL_perl_destruct_level = 1;
54aff467 238#else
7918f24d 239 PERL_UNUSED_ARG(my_perl);
54aff467
GS
240 if (PL_perl_destruct_level > 0)
241 init_interp();
242#endif
34caed6d
DM
243 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
244
34caed6d
DM
245 /* set read-only and try to insure than we wont see REFCNT==0
246 very often */
247
248 SvREADONLY_on(&PL_sv_undef);
249 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
250
251 sv_setpv(&PL_sv_no,PL_No);
252 /* value lookup in void context - happens to have the side effect
a43d94f2
NC
253 of caching the numeric forms. However, as &PL_sv_no doesn't contain
254 a string that is a valid numer, we have to turn the public flags by
255 hand: */
34caed6d 256 SvNV(&PL_sv_no);
c1939273 257 SvIV(&PL_sv_no);
a43d94f2
NC
258 SvIOK_on(&PL_sv_no);
259 SvNOK_on(&PL_sv_no);
34caed6d
DM
260 SvREADONLY_on(&PL_sv_no);
261 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
262
263 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 264 SvNV(&PL_sv_yes);
c1939273 265 SvIV(&PL_sv_yes);
34caed6d
DM
266 SvREADONLY_on(&PL_sv_yes);
267 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
268
269 SvREADONLY_on(&PL_sv_placeholder);
270 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
271
272 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 273#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 274 PL_pidstatus = newHV();
ca0c25f6 275#endif
79072805 276
396482e1 277 PL_rs = newSVpvs("\n");
dc92893f 278
cea2e8a9 279 init_stacks();
79072805 280
748a9306 281 init_ids();
a5f75d66 282
312caa8e 283 JMPENV_BOOTSTRAP;
f86702cc
PP
284 STATUS_ALL_SUCCESS;
285
0672f40e 286 init_i18nl10n(1);
36477c24 287 SET_NUMERIC_STANDARD();
0b5b802d 288
ab821d7f 289#if defined(LOCAL_PATCH_COUNT)
3280af22 290 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
291#endif
292
52853b95
GS
293#ifdef HAVE_INTERP_INTERN
294 sys_intern_init();
295#endif
296
3a1ee7e8 297 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 298
3280af22
NIS
299 PL_fdpid = newAV(); /* for remembering popen pids by fd */
300 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 301 PL_errors = newSVpvs("");
76f68e9b
MHM
302 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
303 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
304 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 305#ifdef USE_ITHREADS
402d2eb1
NC
306 /* First entry is a list of empty elements. It needs to be initialised
307 else all hell breaks loose in S_find_uninit_var(). */
308 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 309 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 310 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 311#endif
e5dd39fc 312#ifdef USE_REENTRANT_API
59bd0823 313 Perl_reentrant_init(aTHX);
e5dd39fc 314#endif
3d47000e
AB
315
316 /* Note that strtab is a rather special HV. Assumptions are made
317 about not iterating on it, and not adding tie magic to it.
318 It is properly deallocated in perl_destruct() */
319 PL_strtab = newHV();
320
3d47000e
AB
321 HvSHAREKEYS_off(PL_strtab); /* mandatory */
322 hv_ksplit(PL_strtab, 512);
323
0631ea03
AB
324#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
325 _dyld_lookup_and_bind
326 ("__environ", (unsigned long *) &environ_pointer, NULL);
327#endif /* environ */
328
2f42fcb0
JH
329#ifndef PERL_MICRO
330# ifdef USE_ENVIRON_ARRAY
0631ea03 331 PL_origenviron = environ;
2f42fcb0 332# endif
0631ea03
AB
333#endif
334
5311654c 335 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 336 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
337 * BeOS has those, but returns the wrong value.
338 * The HZ if not originally defined has been by now
339 * been defined as CLK_TCK, if available. */
dbc1d986 340#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
341 PL_clocktick = sysconf(_SC_CLK_TCK);
342 if (PL_clocktick <= 0)
343#endif
344 PL_clocktick = HZ;
345
081fc587
AB
346 PL_stashcache = newHV();
347
e8e3635e 348 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 349 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 350
27da23d5
JH
351#ifdef HAS_MMAP
352 if (!PL_mmap_page_size) {
353#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
354 {
355 SETERRNO(0, SS_NORMAL);
356# ifdef _SC_PAGESIZE
357 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
358# else
359 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
360# endif
361 if ((long) PL_mmap_page_size < 0) {
362 if (errno) {
44f8325f 363 SV * const error = ERRSV;
d4c19fe8 364 SvUPGRADE(error, SVt_PV);
0510663f 365 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
366 }
367 else
368 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
369 }
370 }
371#else
372# ifdef HAS_GETPAGESIZE
373 PL_mmap_page_size = getpagesize();
374# else
375# if defined(I_SYS_PARAM) && defined(PAGESIZE)
376 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
377# endif
378# endif
379#endif
380 if (PL_mmap_page_size <= 0)
381 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
382 (IV) PL_mmap_page_size);
383 }
384#endif /* HAS_MMAP */
385
386#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
387 PL_timesbase.tms_utime = 0;
388 PL_timesbase.tms_stime = 0;
389 PL_timesbase.tms_cutime = 0;
390 PL_timesbase.tms_cstime = 0;
391#endif
392
7d113631
NC
393 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
394
a3e6e81e 395 PL_registered_mros = newHV();
9e169432
NC
396 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
397 HvMAX(PL_registered_mros) = 0;
a3e6e81e 398
8990e307 399 ENTER;
79072805
LW
400}
401
954c1994 402/*
62375a60
NIS
403=for apidoc nothreadhook
404
405Stub that provides thread hook for perl_destruct when there are
406no threads.
407
408=cut
409*/
410
411int
4e9e3734 412Perl_nothreadhook(pTHX)
62375a60 413{
96a5add6 414 PERL_UNUSED_CONTEXT;
62375a60
NIS
415 return 0;
416}
417
41e4abd8
NC
418#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
419void
420Perl_dump_sv_child(pTHX_ SV *sv)
421{
422 ssize_t got;
bf357333
NC
423 const int sock = PL_dumper_fd;
424 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
425 union control_un control;
426 struct msghdr msg;
808ad2d0 427 struct iovec vec[2];
bf357333 428 struct cmsghdr *cmptr;
808ad2d0
NC
429 int returned_errno;
430 unsigned char buffer[256];
41e4abd8 431
7918f24d
NC
432 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
433
bf357333 434 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
435 return;
436
437 PerlIO_flush(Perl_debug_log);
438
bf357333
NC
439 /* All these shenanigans are to pass a file descriptor over to our child for
440 it to dump out to. We can't let it hold open the file descriptor when it
441 forks, as the file descriptor it will dump to can turn out to be one end
442 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 443 be open, the wait would be forever.) */
bf357333
NC
444
445 msg.msg_control = control.control;
446 msg.msg_controllen = sizeof(control.control);
447 /* We're a connected socket so we don't need a destination */
448 msg.msg_name = NULL;
449 msg.msg_namelen = 0;
450 msg.msg_iov = vec;
808ad2d0 451 msg.msg_iovlen = 1;
bf357333
NC
452
453 cmptr = CMSG_FIRSTHDR(&msg);
454 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
455 cmptr->cmsg_level = SOL_SOCKET;
456 cmptr->cmsg_type = SCM_RIGHTS;
457 *((int *)CMSG_DATA(cmptr)) = 1;
458
459 vec[0].iov_base = (void*)&sv;
460 vec[0].iov_len = sizeof(sv);
461 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
462
463 if(got < 0) {
bf357333 464 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
465 abort();
466 }
bf357333
NC
467 if(got < sizeof(sv)) {
468 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
469 abort();
470 }
471
808ad2d0
NC
472 /* Return protocol is
473 int: errno value
474 unsigned char: length of location string (0 for empty)
475 unsigned char*: string (not terminated)
476 */
477 vec[0].iov_base = (void*)&returned_errno;
478 vec[0].iov_len = sizeof(returned_errno);
479 vec[1].iov_base = buffer;
480 vec[1].iov_len = 1;
481
482 got = readv(sock, vec, 2);
41e4abd8
NC
483
484 if(got < 0) {
485 perror("Debug leaking scalars parent read failed");
808ad2d0 486 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
487 abort();
488 }
808ad2d0 489 if(got < sizeof(returned_errno) + 1) {
41e4abd8 490 perror("Debug leaking scalars parent short read");
808ad2d0 491 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
492 abort();
493 }
494
808ad2d0
NC
495 if (*buffer) {
496 got = read(sock, buffer + 1, *buffer);
497 if(got < 0) {
498 perror("Debug leaking scalars parent read 2 failed");
499 PerlIO_flush(PerlIO_stderr());
500 abort();
501 }
502
503 if(got < *buffer) {
504 perror("Debug leaking scalars parent short read 2");
505 PerlIO_flush(PerlIO_stderr());
506 abort();
507 }
508 }
509
510 if (returned_errno || *buffer) {
511 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
512 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
513 returned_errno, strerror(returned_errno));
41e4abd8
NC
514 }
515}
516#endif
517
62375a60 518/*
954c1994
GS
519=for apidoc perl_destruct
520
521Shuts down a Perl interpreter. See L<perlembed>.
522
523=cut
524*/
525
31d77e54 526int
0cb96387 527perl_destruct(pTHXx)
79072805 528{
27da23d5 529 dVAR;
be2ea8ed 530 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 531 HV *hv;
2aa47728 532#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
533 pid_t child;
534#endif
8990e307 535
7918f24d
NC
536 PERL_ARGS_ASSERT_PERL_DESTRUCT;
537#ifndef MULTIPLICITY
ed6c66dd 538 PERL_UNUSED_ARG(my_perl);
7918f24d 539#endif
9d4ba2ae 540
3d22c4f0
GG
541 assert(PL_scopestack_ix == 1);
542
7766f137
GS
543 /* wait for all pseudo-forked children to finish */
544 PERL_WAIT_FOR_CHILDREN;
545
3280af22 546 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
547#ifdef DEBUGGING
548 {
9d4ba2ae
AL
549 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
550 if (s) {
e1ec3a88 551 const int i = atoi(s);
5f05dabc
PP
552 if (destruct_level < i)
553 destruct_level = i;
554 }
4633a7c4
LW
555 }
556#endif
557
27da23d5 558 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
559 dJMPENV;
560 int x = 0;
561
562 JMPENV_PUSH(x);
1b6737cc 563 PERL_UNUSED_VAR(x);
9ebf26ad 564 if (PL_endav && !PL_minus_c) {
ca7b837b 565 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 566 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 567 }
f3faeb53 568 JMPENV_POP;
26f423df 569 }
f3faeb53 570 LEAVE;
a0d0e21e 571 FREETMPS;
3d22c4f0 572 assert(PL_scopestack_ix == 0);
a0d0e21e 573
e00b64d4 574 /* Need to flush since END blocks can produce output */
f13a2bc0 575 my_fflush_all();
e00b64d4 576
16c91539 577 if (PL_threadhook(aTHX)) {
62375a60 578 /* Threads hook has vetoed further cleanup */
c301d606 579 PL_veto_cleanup = TRUE;
37038d91 580 return STATUS_EXIT;
62375a60
NIS
581 }
582
2aa47728
NC
583#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
584 if (destruct_level != 0) {
585 /* Fork here to create a child. Our child's job is to preserve the
586 state of scalars prior to destruction, so that we can instruct it
587 to dump any scalars that we later find have leaked.
588 There's no subtlety in this code - it assumes POSIX, and it doesn't
589 fail gracefully */
590 int fd[2];
591
592 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
593 perror("Debug leaking scalars socketpair failed");
594 abort();
595 }
596
597 child = fork();
598 if(child == -1) {
599 perror("Debug leaking scalars fork failed");
600 abort();
601 }
602 if (!child) {
603 /* We are the child */
3125a5a4
NC
604 const int sock = fd[1];
605 const int debug_fd = PerlIO_fileno(Perl_debug_log);
606 int f;
808ad2d0
NC
607 const char *where;
608 /* Our success message is an integer 0, and a char 0 */
b61433a9 609 static const char success[sizeof(int) + 1] = {0};
3125a5a4 610
2aa47728 611 close(fd[0]);
2aa47728 612
3125a5a4
NC
613 /* We need to close all other file descriptors otherwise we end up
614 with interesting hangs, where the parent closes its end of a
615 pipe, and sits waiting for (another) child to terminate. Only
616 that child never terminates, because it never gets EOF, because
bf357333
NC
617 we also have the far end of the pipe open. We even need to
618 close the debugging fd, because sometimes it happens to be one
619 end of a pipe, and a process is waiting on the other end for
620 EOF. Normally it would be closed at some point earlier in
621 destruction, but if we happen to cause the pipe to remain open,
622 EOF never occurs, and we get an infinite hang. Hence all the
623 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
624
625 f = sysconf(_SC_OPEN_MAX);
626 if(f < 0) {
808ad2d0
NC
627 where = "sysconf failed";
628 goto abort;
3125a5a4
NC
629 }
630 while (f--) {
631 if (f == sock)
632 continue;
3125a5a4
NC
633 close(f);
634 }
635
2aa47728
NC
636 while (1) {
637 SV *target;
bf357333
NC
638 union control_un control;
639 struct msghdr msg;
640 struct iovec vec[1];
641 struct cmsghdr *cmptr;
642 ssize_t got;
643 int got_fd;
644
645 msg.msg_control = control.control;
646 msg.msg_controllen = sizeof(control.control);
647 /* We're a connected socket so we don't need a source */
648 msg.msg_name = NULL;
649 msg.msg_namelen = 0;
650 msg.msg_iov = vec;
651 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
652
653 vec[0].iov_base = (void*)&target;
654 vec[0].iov_len = sizeof(target);
655
656 got = recvmsg(sock, &msg, 0);
2aa47728
NC
657
658 if(got == 0)
659 break;
660 if(got < 0) {
808ad2d0
NC
661 where = "recv failed";
662 goto abort;
2aa47728
NC
663 }
664 if(got < sizeof(target)) {
808ad2d0
NC
665 where = "short recv";
666 goto abort;
2aa47728 667 }
bf357333 668
808ad2d0
NC
669 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
670 where = "no cmsg";
671 goto abort;
672 }
673 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
674 where = "wrong cmsg_len";
675 goto abort;
676 }
677 if(cmptr->cmsg_level != SOL_SOCKET) {
678 where = "wrong cmsg_level";
679 goto abort;
680 }
681 if(cmptr->cmsg_type != SCM_RIGHTS) {
682 where = "wrong cmsg_type";
683 goto abort;
684 }
bf357333
NC
685
686 got_fd = *(int*)CMSG_DATA(cmptr);
687 /* For our last little bit of trickery, put the file descriptor
688 back into Perl_debug_log, as if we never actually closed it
689 */
808ad2d0
NC
690 if(got_fd != debug_fd) {
691 if (dup2(got_fd, debug_fd) == -1) {
692 where = "dup2";
693 goto abort;
694 }
695 }
2aa47728 696 sv_dump(target);
bf357333 697
2aa47728
NC
698 PerlIO_flush(Perl_debug_log);
699
808ad2d0 700 got = write(sock, &success, sizeof(success));
2aa47728
NC
701
702 if(got < 0) {
808ad2d0
NC
703 where = "write failed";
704 goto abort;
2aa47728 705 }
808ad2d0
NC
706 if(got < sizeof(success)) {
707 where = "short write";
708 goto abort;
2aa47728
NC
709 }
710 }
711 _exit(0);
808ad2d0
NC
712 abort:
713 {
714 int send_errno = errno;
715 unsigned char length = (unsigned char) strlen(where);
716 struct iovec failure[3] = {
717 {(void*)&send_errno, sizeof(send_errno)},
718 {&length, 1},
719 {(void*)where, length}
720 };
721 int got = writev(sock, failure, 3);
722 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
723 in the parent if we try to read from the socketpair after the
724 child has exited, even if there was data to read.
725 So sleep a bit to give the parent a fighting chance of
726 reading the data. */
727 sleep(2);
728 _exit((got == -1) ? errno : 0);
729 }
bf357333 730 /* End of child. */
2aa47728 731 }
41e4abd8 732 PL_dumper_fd = fd[0];
2aa47728
NC
733 close(fd[1]);
734 }
735#endif
736
ff0cee69
PP
737 /* We must account for everything. */
738
739 /* Destroy the main CV and syntax tree */
37e77c23
FC
740 /* Set PL_curcop now, because destroying ops can cause new SVs
741 to be generated in Perl_pad_swipe, and when running with
742 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
743 op from which the filename structure member is copied. */
17fbfdf6 744 PL_curcop = &PL_compiling;
3280af22 745 if (PL_main_root) {
4e380990
DM
746 /* ensure comppad/curpad to refer to main's pad */
747 if (CvPADLIST(PL_main_cv)) {
748 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
749 }
3280af22 750 op_free(PL_main_root);
5f66b61c 751 PL_main_root = NULL;
a0d0e21e 752 }
5f66b61c 753 PL_main_start = NULL;
aac9d523
DM
754 /* note that PL_main_cv isn't usually actually freed at this point,
755 * due to the CvOUTSIDE refs from subs compiled within it. It will
756 * get freed once all the subs are freed in sv_clean_all(), for
757 * destruct_level > 0 */
3280af22 758 SvREFCNT_dec(PL_main_cv);
601f1833 759 PL_main_cv = NULL;
ca7b837b 760 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 761
13621cfb
NIS
762 /* Tell PerlIO we are about to tear things apart in case
763 we have layers which are using resources that should
764 be cleaned up now.
765 */
766
767 PerlIO_destruct(aTHX);
768
3280af22 769 if (PL_sv_objcount) {
a0d0e21e
LW
770 /*
771 * Try to destruct global references. We do this first so that the
772 * destructors and destructees still exist. Some sv's might remain.
773 * Non-referenced objects are on their own.
774 */
a0d0e21e 775 sv_clean_objs();
bf9cdc68 776 PL_sv_objcount = 0;
8990e307
LW
777 }
778
5cd24f17 779 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 780 SvREFCNT_dec(PL_warnhook);
a0714e2c 781 PL_warnhook = NULL;
3280af22 782 SvREFCNT_dec(PL_diehook);
a0714e2c 783 PL_diehook = NULL;
5cd24f17 784
4b556e6c 785 /* call exit list functions */
3280af22 786 while (PL_exitlistlen-- > 0)
acfe0abc 787 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 788
3280af22 789 Safefree(PL_exitlist);
4b556e6c 790
1c4916e5
CB
791 PL_exitlist = NULL;
792 PL_exitlistlen = 0;
793
a3e6e81e
NC
794 SvREFCNT_dec(PL_registered_mros);
795
551a8b83 796 /* jettison our possibly duplicated environment */
4b647fb0
DM
797 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
798 * so we certainly shouldn't free it here
799 */
2f42fcb0 800#ifndef PERL_MICRO
4b647fb0 801#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 802 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
803#ifdef USE_ITHREADS
804 /* only main thread can free environ[0] contents */
805 && PL_curinterp == aTHX
806#endif
807 )
808 {
551a8b83
JH
809 I32 i;
810
811 for (i = 0; environ[i]; i++)
4b420006 812 safesysfree(environ[i]);
0631ea03 813
4b420006
JH
814 /* Must use safesysfree() when working with environ. */
815 safesysfree(environ);
551a8b83
JH
816
817 environ = PL_origenviron;
818 }
819#endif
2f42fcb0 820#endif /* !PERL_MICRO */
551a8b83 821
30985c42
JH
822 if (destruct_level == 0) {
823
824 DEBUG_P(debprofdump());
825
826#if defined(PERLIO_LAYERS)
827 /* No more IO - including error messages ! */
828 PerlIO_cleanup(aTHX);
829#endif
830
831 CopFILE_free(&PL_compiling);
30985c42
JH
832
833 /* The exit() function will do everything that needs doing. */
834 return STATUS_EXIT;
835 }
836
5f8cb046
DM
837#ifdef USE_ITHREADS
838 /* the syntax tree is shared between clones
839 * so op_free(PL_main_root) only ReREFCNT_dec's
840 * REGEXPs in the parent interpreter
841 * we need to manually ReREFCNT_dec for the clones
842 */
0547a729
DM
843 {
844 I32 i = AvFILLp(PL_regex_padav);
845 SV **ary = AvARRAY(PL_regex_padav);
846
847 for (; i; i--) {
848 SvREFCNT_dec(ary[i]);
849 ary[i] = &PL_sv_undef;
850 }
851 }
d4d03940 852 Safefree(PL_stashpad);
5f8cb046
DM
853#endif
854
0547a729 855
ad64d0ec 856 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
857 PL_stashcache = NULL;
858
5f05dabc
PP
859 /* loosen bonds of global variables */
860
2f9285f8
DM
861 /* XXX can PL_parser still be non-null here? */
862 if(PL_parser && PL_parser->rsfp) {
863 (void)PerlIO_close(PL_parser->rsfp);
864 PL_parser->rsfp = NULL;
8ebc5c01
PP
865 }
866
84386e14
RGS
867 if (PL_minus_F) {
868 Safefree(PL_splitstr);
869 PL_splitstr = NULL;
870 }
871
8ebc5c01 872 /* switches */
3280af22
NIS
873 PL_minus_n = FALSE;
874 PL_minus_p = FALSE;
875 PL_minus_l = FALSE;
876 PL_minus_a = FALSE;
877 PL_minus_F = FALSE;
878 PL_doswitches = FALSE;
599cee73 879 PL_dowarn = G_WARN_OFF;
3280af22 880 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
881 PL_unsafe = FALSE;
882
883 Safefree(PL_inplace);
bd61b366 884 PL_inplace = NULL;
a7cb1f99 885 SvREFCNT_dec(PL_patchlevel);
1e8125c6 886 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
887
888 if (PL_e_script) {
889 SvREFCNT_dec(PL_e_script);
a0714e2c 890 PL_e_script = NULL;
8ebc5c01
PP
891 }
892
bf9cdc68
RG
893 PL_perldb = 0;
894
8ebc5c01
PP
895 /* magical thingies */
896
e23d9e2f
CS
897 SvREFCNT_dec(PL_ofsgv); /* *, */
898 PL_ofsgv = NULL;
5f05dabc 899
7889fe52 900 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 901 PL_ors_sv = NULL;
8ebc5c01 902
3280af22 903 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 904 PL_rs = NULL;
dc92893f 905
d33b2eba 906 Safefree(PL_osname); /* $^O */
bd61b366 907 PL_osname = NULL;
5f05dabc 908
3280af22 909 SvREFCNT_dec(PL_statname);
a0714e2c
SS
910 PL_statname = NULL;
911 PL_statgv = NULL;
5f05dabc 912
8ebc5c01
PP
913 /* defgv, aka *_ should be taken care of elsewhere */
914
7d5ea4e7
GS
915 /* float buffer */
916 Safefree(PL_efloatbuf);
bd61b366 917 PL_efloatbuf = NULL;
7d5ea4e7
GS
918 PL_efloatsize = 0;
919
8ebc5c01 920 /* startup and shutdown function lists */
3280af22 921 SvREFCNT_dec(PL_beginav);
5a837c8f 922 SvREFCNT_dec(PL_beginav_save);
3280af22 923 SvREFCNT_dec(PL_endav);
7d30b5c4 924 SvREFCNT_dec(PL_checkav);
ece599bd 925 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
926 SvREFCNT_dec(PL_unitcheckav);
927 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 928 SvREFCNT_dec(PL_initav);
7d49f689
NC
929 PL_beginav = NULL;
930 PL_beginav_save = NULL;
931 PL_endav = NULL;
932 PL_checkav = NULL;
933 PL_checkav_save = NULL;
3c10abe3
AG
934 PL_unitcheckav = NULL;
935 PL_unitcheckav_save = NULL;
7d49f689 936 PL_initav = NULL;
5618dfe8 937
8ebc5c01 938 /* shortcuts just get cleared */
a0714e2c
SS
939 PL_envgv = NULL;
940 PL_incgv = NULL;
941 PL_hintgv = NULL;
942 PL_errgv = NULL;
943 PL_argvgv = NULL;
944 PL_argvoutgv = NULL;
945 PL_stdingv = NULL;
946 PL_stderrgv = NULL;
947 PL_last_in_gv = NULL;
948 PL_replgv = NULL;
949 PL_DBgv = NULL;
950 PL_DBline = NULL;
951 PL_DBsub = NULL;
952 PL_DBsingle = NULL;
953 PL_DBtrace = NULL;
954 PL_DBsignal = NULL;
601f1833 955 PL_DBcv = NULL;
7d49f689 956 PL_dbargs = NULL;
5c284bb0 957 PL_debstash = NULL;
8ebc5c01 958
7a1c5554 959 SvREFCNT_dec(PL_argvout_stack);
7d49f689 960 PL_argvout_stack = NULL;
8ebc5c01 961
5c831c24 962 SvREFCNT_dec(PL_modglobal);
5c284bb0 963 PL_modglobal = NULL;
5c831c24 964 SvREFCNT_dec(PL_preambleav);
7d49f689 965 PL_preambleav = NULL;
5c831c24 966 SvREFCNT_dec(PL_subname);
a0714e2c 967 PL_subname = NULL;
ca0c25f6 968#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 969 SvREFCNT_dec(PL_pidstatus);
5c284bb0 970 PL_pidstatus = NULL;
ca0c25f6 971#endif
5c831c24 972 SvREFCNT_dec(PL_toptarget);
a0714e2c 973 PL_toptarget = NULL;
5c831c24 974 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
975 PL_bodytarget = NULL;
976 PL_formtarget = NULL;
5c831c24 977
d33b2eba 978 /* free locale stuff */
b9582b6a 979#ifdef USE_LOCALE_COLLATE
d33b2eba 980 Safefree(PL_collation_name);
bd61b366 981 PL_collation_name = NULL;
b9582b6a 982#endif
d33b2eba 983
b9582b6a 984#ifdef USE_LOCALE_NUMERIC
d33b2eba 985 Safefree(PL_numeric_name);
bd61b366 986 PL_numeric_name = NULL;
a453c169 987 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 988 PL_numeric_radix_sv = NULL;
b9582b6a 989#endif
d33b2eba 990
5c831c24
GS
991 /* clear utf8 character classes */
992 SvREFCNT_dec(PL_utf8_alnum);
5c831c24 993 SvREFCNT_dec(PL_utf8_alpha);
bdd8600f 994 SvREFCNT_dec(PL_utf8_blank);
5c831c24 995 SvREFCNT_dec(PL_utf8_space);
5c831c24
GS
996 SvREFCNT_dec(PL_utf8_graph);
997 SvREFCNT_dec(PL_utf8_digit);
998 SvREFCNT_dec(PL_utf8_upper);
999 SvREFCNT_dec(PL_utf8_lower);
1000 SvREFCNT_dec(PL_utf8_print);
1001 SvREFCNT_dec(PL_utf8_punct);
1002 SvREFCNT_dec(PL_utf8_xdigit);
1003 SvREFCNT_dec(PL_utf8_mark);
1004 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1005 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1006 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1007 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1008 SvREFCNT_dec(PL_utf8_idstart);
1009 SvREFCNT_dec(PL_utf8_idcont);
2726813d 1010 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 1011 PL_utf8_alnum = NULL;
a0714e2c 1012 PL_utf8_alpha = NULL;
bdd8600f 1013 PL_utf8_blank = NULL;
a0714e2c 1014 PL_utf8_space = NULL;
a0714e2c
SS
1015 PL_utf8_graph = NULL;
1016 PL_utf8_digit = NULL;
1017 PL_utf8_upper = NULL;
1018 PL_utf8_lower = NULL;
1019 PL_utf8_print = NULL;
1020 PL_utf8_punct = NULL;
1021 PL_utf8_xdigit = NULL;
1022 PL_utf8_mark = NULL;
1023 PL_utf8_toupper = NULL;
1024 PL_utf8_totitle = NULL;
1025 PL_utf8_tolower = NULL;
1026 PL_utf8_tofold = NULL;
1027 PL_utf8_idstart = NULL;
1028 PL_utf8_idcont = NULL;
2726813d 1029 PL_utf8_foldclosures = NULL;
5c831c24 1030
971a9dd3 1031 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1032 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1033 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1034 cophh_free(CopHINTHASH_get(&PL_compiling));
1035 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1036 CopFILE_free(&PL_compiling);
5c831c24 1037
a0d0e21e 1038 /* Prepare to destruct main symbol table. */
5f05dabc 1039
3280af22 1040 hv = PL_defstash;
ca556bcd
DM
1041 /* break ref loop *:: <=> %:: */
1042 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1043 PL_defstash = 0;
a0d0e21e 1044 SvREFCNT_dec(hv);
5c831c24 1045 SvREFCNT_dec(PL_curstname);
a0714e2c 1046 PL_curstname = NULL;
a0d0e21e 1047
5a844595
GS
1048 /* clear queued errors */
1049 SvREFCNT_dec(PL_errors);
a0714e2c 1050 PL_errors = NULL;
5a844595 1051
dd69841b
BB
1052 SvREFCNT_dec(PL_isarev);
1053
a0d0e21e 1054 FREETMPS;
9b387841 1055 if (destruct_level >= 2) {
3280af22 1056 if (PL_scopestack_ix != 0)
9b387841
NC
1057 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1058 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1059 (long)PL_scopestack_ix);
3280af22 1060 if (PL_savestack_ix != 0)
9b387841
NC
1061 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1062 "Unbalanced saves: %ld more saves than restores\n",
1063 (long)PL_savestack_ix);
3280af22 1064 if (PL_tmps_floor != -1)
9b387841
NC
1065 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1066 (long)PL_tmps_floor + 1);
a0d0e21e 1067 if (cxstack_ix != -1)
9b387841
NC
1068 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1069 (long)cxstack_ix + 1);
a0d0e21e 1070 }
8990e307 1071
0547a729
DM
1072#ifdef USE_ITHREADS
1073 SvREFCNT_dec(PL_regex_padav);
1074 PL_regex_padav = NULL;
1075 PL_regex_pad = NULL;
1076#endif
1077
776df701 1078#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1079 /* the entries in this list are allocated via SV PVX's, so get freed
1080 * in sv_clean_all */
1081 Safefree(PL_my_cxt_list);
776df701 1082#endif
57bb2458 1083
8990e307 1084 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1085
1086 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1087 while (sv_clean_all() > 2)
5226ed68
JH
1088 ;
1089
d4777f27
GS
1090 AvREAL_off(PL_fdpid); /* no surviving entries */
1091 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1092 PL_fdpid = NULL;
d33b2eba 1093
6c644e78
GS
1094#ifdef HAVE_INTERP_INTERN
1095 sys_intern_clear();
1096#endif
1097
6e72f9df
PP
1098 /* Destruct the global string table. */
1099 {
1100 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1101 * so that sv_free() won't fail on them.
80459961
NC
1102 * Now that the global string table is using a single hunk of memory
1103 * for both HE and HEK, we either need to explicitly unshare it the
1104 * correct way, or actually free things here.
6e72f9df 1105 */
80459961
NC
1106 I32 riter = 0;
1107 const I32 max = HvMAX(PL_strtab);
c4420975 1108 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1109 HE *hent = array[0];
1110
6e72f9df 1111 for (;;) {
0453d815 1112 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1113 HE * const next = HeNEXT(hent);
9014280d 1114 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1115 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1116 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1117 Safefree(hent);
1118 hent = next;
6e72f9df
PP
1119 }
1120 if (!hent) {
1121 if (++riter > max)
1122 break;
1123 hent = array[riter];
1124 }
1125 }
80459961
NC
1126
1127 Safefree(array);
1128 HvARRAY(PL_strtab) = 0;
1129 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1130 }
3280af22 1131 SvREFCNT_dec(PL_strtab);
6e72f9df 1132
e652bb2f 1133#ifdef USE_ITHREADS
c21d1a0f 1134 /* free the pointer tables used for cloning */
a0739874 1135 ptr_table_free(PL_ptr_table);
bf9cdc68 1136 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1137#endif
a0739874 1138
d33b2eba
GS
1139 /* free special SVs */
1140
1141 SvREFCNT(&PL_sv_yes) = 0;
1142 sv_clear(&PL_sv_yes);
1143 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1144 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1145
1146 SvREFCNT(&PL_sv_no) = 0;
1147 sv_clear(&PL_sv_no);
1148 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1149 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1150
9f375a43
DM
1151 {
1152 int i;
1153 for (i=0; i<=2; i++) {
1154 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1155 sv_clear(PERL_DEBUG_PAD(i));
1156 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1157 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1158 }
1159 }
1160
0453d815 1161 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1162 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1163
eba0f806
DM
1164#ifdef DEBUG_LEAKING_SCALARS
1165 if (PL_sv_count != 0) {
1166 SV* sva;
1167 SV* sv;
1168 register SV* svend;
1169
ad64d0ec 1170 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1171 svend = &sva[SvREFCNT(sva)];
1172 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1173 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1174 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1175 " flags=0x%"UVxf
fd0854ff 1176 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1177 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1178 "serial %"UVuf"\n",
574b8821
NC
1179 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1180 pTHX__VALUE,
fd0854ff
DM
1181 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1182 sv->sv_debug_line,
1183 sv->sv_debug_inpad ? "for" : "by",
1184 sv->sv_debug_optype ?
1185 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1186 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1187 sv->sv_debug_serial
fd0854ff 1188 );
2aa47728 1189#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1190 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1191#endif
eba0f806
DM
1192 }
1193 }
1194 }
1195 }
2aa47728
NC
1196#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1197 {
1198 int status;
1199 fd_set rset;
1200 /* Wait for up to 4 seconds for child to terminate.
1201 This seems to be the least effort way of timing out on reaping
1202 its exit status. */
1203 struct timeval waitfor = {4, 0};
41e4abd8 1204 int sock = PL_dumper_fd;
2aa47728
NC
1205
1206 shutdown(sock, 1);
1207 FD_ZERO(&rset);
1208 FD_SET(sock, &rset);
1209 select(sock + 1, &rset, NULL, NULL, &waitfor);
1210 waitpid(child, &status, WNOHANG);
1211 close(sock);
1212 }
1213#endif
eba0f806 1214#endif
77abb4c6
NC
1215#ifdef DEBUG_LEAKING_SCALARS_ABORT
1216 if (PL_sv_count)
1217 abort();
1218#endif
bf9cdc68 1219 PL_sv_count = 0;
eba0f806 1220
56a2bab7 1221#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1222 /* No more IO - including error messages ! */
1223 PerlIO_cleanup(aTHX);
1224#endif
1225
9f4bd222 1226 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1227 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1228 for no arg - and will try and SvREFCNT_dec it.
1229 */
1230 SvREFCNT(&PL_sv_undef) = 0;
1231 SvREADONLY_off(&PL_sv_undef);
1232
3280af22 1233 Safefree(PL_origfilename);
bd61b366 1234 PL_origfilename = NULL;
43c5f42d 1235 Safefree(PL_reg_curpm);
82ba1be6 1236 Safefree(PL_reg_poscache);
dd28f7bb 1237 free_tied_hv_pool();
3280af22 1238 Safefree(PL_op_mask);
cf36064f 1239 Safefree(PL_psig_name);
bf9cdc68 1240 PL_psig_name = (SV**)NULL;
d525a7b2 1241 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1242 {
1243 /* We need to NULL PL_psig_pend first, so that
1244 signal handlers know not to use it */
1245 int *psig_save = PL_psig_pend;
1246 PL_psig_pend = (int*)NULL;
1247 Safefree(psig_save);
1248 }
a0714e2c 1249 PL_formfeed = NULL;
6e72f9df 1250 nuke_stacks();
bf9cdc68
RG
1251 PL_tainting = FALSE;
1252 PL_taint_warn = FALSE;
3280af22 1253 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1254 PL_debug = 0;
ac27b0f5 1255
a0d0e21e 1256 DEBUG_P(debprofdump());
d33b2eba 1257
e5dd39fc 1258#ifdef USE_REENTRANT_API
10bc17b6 1259 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1260#endif
1261
612f20c3
GS
1262 sv_free_arenas();
1263
5d9a96ca
DM
1264 while (PL_regmatch_slab) {
1265 regmatch_slab *s = PL_regmatch_slab;
1266 PL_regmatch_slab = PL_regmatch_slab->next;
1267 Safefree(s);
1268 }
1269
fc36a67e
PP
1270 /* As the absolutely last thing, free the non-arena SV for mess() */
1271
3280af22 1272 if (PL_mess_sv) {
f350b448
NC
1273 /* we know that type == SVt_PVMG */
1274
9c63abab 1275 /* it could have accumulated taint magic */
f350b448
NC
1276 MAGIC* mg;
1277 MAGIC* moremagic;
1278 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1279 moremagic = mg->mg_moremagic;
1280 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1281 && mg->mg_len >= 0)
1282 Safefree(mg->mg_ptr);
1283 Safefree(mg);
9c63abab 1284 }
f350b448 1285
fc36a67e 1286 /* we know that type >= SVt_PV */
8bd4d4c5 1287 SvPV_free(PL_mess_sv);
3280af22
NIS
1288 Safefree(SvANY(PL_mess_sv));
1289 Safefree(PL_mess_sv);
a0714e2c 1290 PL_mess_sv = NULL;
fc36a67e 1291 }
37038d91 1292 return STATUS_EXIT;
79072805
LW
1293}
1294
954c1994
GS
1295/*
1296=for apidoc perl_free
1297
1298Releases a Perl interpreter. See L<perlembed>.
1299
1300=cut
1301*/
1302
79072805 1303void
0cb96387 1304perl_free(pTHXx)
79072805 1305{
5174512c
NC
1306 dVAR;
1307
7918f24d
NC
1308 PERL_ARGS_ASSERT_PERL_FREE;
1309
c301d606
DM
1310 if (PL_veto_cleanup)
1311 return;
1312
7cb608b5 1313#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1314 {
1315 /*
1316 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1317 * value as we're probably hunting memory leaks then
1318 */
1319 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1320 if (!s || atoi(s) == 0) {
4fd0a9b8 1321 const U32 old_debug = PL_debug;
55ef9aae
MHM
1322 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1323 thread at thread exit. */
4fd0a9b8
NC
1324 if (DEBUG_m_TEST) {
1325 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1326 "free this thread's memory\n");
1327 PL_debug &= ~ DEBUG_m_FLAG;
1328 }
55ef9aae
MHM
1329 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1330 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1331 PL_debug = old_debug;
55ef9aae
MHM
1332 }
1333 }
7cb608b5
NC
1334#endif
1335
acfe0abc 1336#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1337# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1338 {
acfe0abc 1339# ifdef NETWARE
7af12a34 1340 void *host = nw_internal_host;
acfe0abc 1341# else
7af12a34 1342 void *host = w32_internal_host;
acfe0abc 1343# endif
7af12a34 1344 PerlMem_free(aTHXx);
acfe0abc 1345# ifdef NETWARE
7af12a34 1346 nw_delete_internal_host(host);
acfe0abc 1347# else
7af12a34 1348 win32_delete_internal_host(host);
acfe0abc 1349# endif
7af12a34 1350 }
1c0ca838
GS
1351# else
1352 PerlMem_free(aTHXx);
1353# endif
acfe0abc
GS
1354#else
1355 PerlMem_free(aTHXx);
76e3520e 1356#endif
79072805
LW
1357}
1358
b7f7fff6 1359#if defined(USE_ITHREADS)
aebd1ac7
GA
1360/* provide destructors to clean up the thread key when libperl is unloaded */
1361#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1362
826955bd 1363#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1364#pragma fini "perl_fini"
666ad1ec
GA
1365#elif defined(__sun) && !defined(__GNUC__)
1366#pragma fini (perl_fini)
aebd1ac7
GA
1367#endif
1368
0dbb1585
AL
1369static void
1370#if defined(__GNUC__)
1371__attribute__((destructor))
aebd1ac7 1372#endif
de009b76 1373perl_fini(void)
aebd1ac7 1374{
27da23d5 1375 dVAR;
c301d606 1376 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1377 FREE_THREAD_KEY;
1378}
1379
1380#endif /* WIN32 */
1381#endif /* THREADS */
1382
4b556e6c 1383void
864dbfa3 1384Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1385{
97aff369 1386 dVAR;
3280af22
NIS
1387 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1388 PL_exitlist[PL_exitlistlen].fn = fn;
1389 PL_exitlist[PL_exitlistlen].ptr = ptr;
1390 ++PL_exitlistlen;
4b556e6c
JD
1391}
1392
b7975bdd
NC
1393STATIC void
1394S_set_caret_X(pTHX) {
97aff369 1395 dVAR;
fafc274c 1396 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1397 if (tmpgv) {
0f1723e1 1398 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1399#if defined(OS2)
1400 sv_setpv(caret_x, os2_execname(aTHX));
1401#else
2982a345
NC
1402# ifdef USE_KERN_PROC_PATHNAME
1403 size_t size = 0;
1404 int mib[4];
1405 mib[0] = CTL_KERN;
1406 mib[1] = KERN_PROC;
1407 mib[2] = KERN_PROC_PATHNAME;
1408 mib[3] = -1;
1409
1410 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1411 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1412 sv_grow(caret_x, size);
1413
1414 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1415 && size > 2) {
1416 SvPOK_only(caret_x);
1417 SvCUR_set(caret_x, size - 1);
1418 SvTAINT(caret_x);
1419 return;
1420 }
1421 }
ae60cb46
NC
1422# elif defined(USE_NSGETEXECUTABLEPATH)
1423 char buf[1];
1424 uint32_t size = sizeof(buf);
ae60cb46
NC
1425
1426 _NSGetExecutablePath(buf, &size);
1427 if (size < MAXPATHLEN * MAXPATHLEN) {
1428 sv_grow(caret_x, size);
1429 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1430 char *const tidied = realpath(SvPVX(caret_x), NULL);
1431 if (tidied) {
1432 sv_setpv(caret_x, tidied);
1433 free(tidied);
1434 } else {
1435 SvPOK_only(caret_x);
1436 SvCUR_set(caret_x, size);
1437 }
1438 return;
1439 }
1440 }
2982a345 1441# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1442 char buf[MAXPATHLEN];
1443 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1444
1445 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1446 includes a spurious NUL which will cause $^X to fail in system
1447 or backticks (this will prevent extensions from being built and
1448 many tests from working). readlink is not meant to add a NUL.
1449 Normal readlink works fine.
1450 */
1451 if (len > 0 && buf[len-1] == '\0') {
1452 len--;
1453 }
1454
1455 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1456 returning the text "unknown" from the readlink rather than the path
1457 to the executable (or returning an error from the readlink). Any
1458 valid path has a '/' in it somewhere, so use that to validate the
1459 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1460 */
1461 if (len > 0 && memchr(buf, '/', len)) {
1462 sv_setpvn(caret_x, buf, len);
82552a95 1463 return;
700dd4f8 1464 }
82552a95
NC
1465# endif
1466 /* Fallback to this: */
0f1723e1 1467 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1468#endif
b7975bdd
NC
1469 }
1470}
1471
954c1994
GS
1472/*
1473=for apidoc perl_parse
1474
1475Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1476
1477=cut
1478*/
1479
03d9f026
FC
1480#define SET_CURSTASH(newstash) \
1481 if (PL_curstash != newstash) { \
1482 SvREFCNT_dec(PL_curstash); \
1483 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1484 }
1485
79072805 1486int
0cb96387 1487perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1488{
27da23d5 1489 dVAR;
6224f72b 1490 I32 oldscope;
6224f72b 1491 int ret;
db36c5a1 1492 dJMPENV;
8d063cd8 1493
7918f24d
NC
1494 PERL_ARGS_ASSERT_PERL_PARSE;
1495#ifndef MULTIPLICITY
ed6c66dd 1496 PERL_UNUSED_ARG(my_perl);
7918f24d 1497#endif
9d4ba2ae 1498
b0891165
JH
1499#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1500 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1501 * This MUST be done before any hash stores or fetches take place.
486ec47a 1502 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1503 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1504 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1505 if (!PL_rehash_seed_set)
1506 PL_rehash_seed = get_hash_seed();
b0891165 1507 {
9d4ba2ae 1508 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1509
1b6737cc
AL
1510 if (s && (atoi(s) == 1))
1511 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1512 }
1513#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1514
3280af22 1515 PL_origargc = argc;
e2975953 1516 PL_origargv = argv;
a0d0e21e 1517
a2722ac9
GA
1518 if (PL_origalen != 0) {
1519 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1520 }
1521 else {
3cb9023d
JH
1522 /* Set PL_origalen be the sum of the contiguous argv[]
1523 * elements plus the size of the env in case that it is
e9137a8e 1524 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1525 * as the maximum modifiable length of $0. In the worst case
1526 * the area we are able to modify is limited to the size of
43c32782 1527 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1528 * --jhi */
e1ec3a88 1529 const char *s = NULL;
54bfe034 1530 int i;
1b6737cc 1531 const UV mask =
7d8e7db3 1532 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1533 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1534 const UV aligned =
43c32782
JH
1535 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1536
1537 /* See if all the arguments are contiguous in memory. Note
1538 * that 'contiguous' is a loose term because some platforms
1539 * align the argv[] and the envp[]. If the arguments look
1540 * like non-aligned, assume that they are 'strictly' or
1541 * 'traditionally' contiguous. If the arguments look like
1542 * aligned, we just check that they are within aligned
1543 * PTRSIZE bytes. As long as no system has something bizarre
1544 * like the argv[] interleaved with some other data, we are
1545 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1546 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1547 while (*s) s++;
1548 for (i = 1; i < PL_origargc; i++) {
1549 if ((PL_origargv[i] == s + 1
43c32782 1550#ifdef OS2
c8941eeb 1551 || PL_origargv[i] == s + 2
43c32782 1552#endif
c8941eeb
JH
1553 )
1554 ||
1555 (aligned &&
1556 (PL_origargv[i] > s &&
1557 PL_origargv[i] <=
1558 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1559 )
1560 {
1561 s = PL_origargv[i];
1562 while (*s) s++;
1563 }
1564 else
1565 break;
54bfe034 1566 }
54bfe034 1567 }
a4a109c2
JD
1568
1569#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1570 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1571 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1572 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1573 ||
1574 (aligned &&
1575 (PL_origenviron[0] > s &&
1576 PL_origenviron[0] <=
1577 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1578 )
1579 {
9d419b5f 1580#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1581 s = PL_origenviron[0];
1582 while (*s) s++;
1583#endif
bd61b366 1584 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1585 /* Force copy of environment. */
1586 for (i = 1; PL_origenviron[i]; i++) {
1587 if (PL_origenviron[i] == s + 1
1588 ||
1589 (aligned &&
1590 (PL_origenviron[i] > s &&
1591 PL_origenviron[i] <=
1592 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1593 )
1594 {
1595 s = PL_origenviron[i];
1596 while (*s) s++;
1597 }
1598 else
1599 break;
54bfe034 1600 }
43c32782 1601 }
54bfe034 1602 }
a4a109c2
JD
1603#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1604
2d2af554 1605 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1606 }
1607
3280af22 1608 if (PL_do_undump) {
a0d0e21e
LW
1609
1610 /* Come here if running an undumped a.out. */
1611
3280af22
NIS
1612 PL_origfilename = savepv(argv[0]);
1613 PL_do_undump = FALSE;
a0d0e21e 1614 cxstack_ix = -1; /* start label stack again */
748a9306 1615 init_ids();
b7975bdd
NC
1616 assert (!PL_tainted);
1617 TAINT;
1618 S_set_caret_X(aTHX);
1619 TAINT_NOT;
a0d0e21e
LW
1620 init_postdump_symbols(argc,argv,env);
1621 return 0;
1622 }
1623
3280af22 1624 if (PL_main_root) {
3280af22 1625 op_free(PL_main_root);
5f66b61c 1626 PL_main_root = NULL;
ff0cee69 1627 }
5f66b61c 1628 PL_main_start = NULL;
3280af22 1629 SvREFCNT_dec(PL_main_cv);
601f1833 1630 PL_main_cv = NULL;
79072805 1631
3280af22
NIS
1632 time(&PL_basetime);
1633 oldscope = PL_scopestack_ix;
599cee73 1634 PL_dowarn = G_WARN_OFF;
f86702cc 1635
14dd3ad8 1636 JMPENV_PUSH(ret);
6224f72b 1637 switch (ret) {
312caa8e 1638 case 0:
14dd3ad8 1639 parse_body(env,xsinit);
9ebf26ad 1640 if (PL_unitcheckav) {
3c10abe3 1641 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1642 }
1643 if (PL_checkav) {
ca7b837b 1644 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1645 call_list(oldscope, PL_checkav);
9ebf26ad 1646 }
14dd3ad8
GS
1647 ret = 0;
1648 break;
6224f72b
GS
1649 case 1:
1650 STATUS_ALL_FAILURE;
1651 /* FALL THROUGH */
1652 case 2:
1653 /* my_exit() was called */
3280af22 1654 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1655 LEAVE;
1656 FREETMPS;
03d9f026 1657 SET_CURSTASH(PL_defstash);
9ebf26ad 1658 if (PL_unitcheckav) {
3c10abe3 1659 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1660 }
1661 if (PL_checkav) {
ca7b837b 1662 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1663 call_list(oldscope, PL_checkav);
9ebf26ad 1664 }
37038d91 1665 ret = STATUS_EXIT;
14dd3ad8 1666 break;
6224f72b 1667 case 3:
bf49b057 1668 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1669 ret = 1;
1670 break;
6224f72b 1671 }
14dd3ad8
GS
1672 JMPENV_POP;
1673 return ret;
1674}
1675
4a5df386
NC
1676/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1677 miniperl, and we need to see those flags reflected in the values here. */
1678
1679/* What this returns is subject to change. Use the public interface in Config.
1680 */
1681static void
1682S_Internals_V(pTHX_ CV *cv)
1683{
1684 dXSARGS;
1685#ifdef LOCAL_PATCH_COUNT
1686 const int local_patch_count = LOCAL_PATCH_COUNT;
1687#else
1688 const int local_patch_count = 0;
1689#endif
2dc296d2 1690 const int entries = 3 + local_patch_count;
4a5df386
NC
1691 int i;
1692 static char non_bincompat_options[] =
1693# ifdef DEBUGGING
1694 " DEBUGGING"
1695# endif
1696# ifdef NO_MATHOMS
0d311fbe 1697 " NO_MATHOMS"
4a5df386
NC
1698# endif
1699# ifdef PERL_DISABLE_PMC
1700 " PERL_DISABLE_PMC"
1701# endif
1702# ifdef PERL_DONT_CREATE_GVSV
1703 " PERL_DONT_CREATE_GVSV"
1704# endif
9a044a43
NC
1705# ifdef PERL_EXTERNAL_GLOB
1706 " PERL_EXTERNAL_GLOB"
1707# endif
4a5df386
NC
1708# ifdef PERL_IS_MINIPERL
1709 " PERL_IS_MINIPERL"
1710# endif
1711# ifdef PERL_MALLOC_WRAP
1712 " PERL_MALLOC_WRAP"
1713# endif
1714# ifdef PERL_MEM_LOG
1715 " PERL_MEM_LOG"
1716# endif
1717# ifdef PERL_MEM_LOG_NOIMPL
1718 " PERL_MEM_LOG_NOIMPL"
1719# endif
c3cf41ec
NC
1720# ifdef PERL_PRESERVE_IVUV
1721 " PERL_PRESERVE_IVUV"
1722# endif
c051e30b
NC
1723# ifdef PERL_RELOCATABLE_INCPUSH
1724 " PERL_RELOCATABLE_INCPUSH"
1725# endif
4a5df386
NC
1726# ifdef PERL_USE_DEVEL
1727 " PERL_USE_DEVEL"
1728# endif
1729# ifdef PERL_USE_SAFE_PUTENV
1730 " PERL_USE_SAFE_PUTENV"
1731# endif
a3749cf3
NC
1732# ifdef UNLINK_ALL_VERSIONS
1733 " UNLINK_ALL_VERSIONS"
1734# endif
de618ee4
NC
1735# ifdef USE_ATTRIBUTES_FOR_PERLIO
1736 " USE_ATTRIBUTES_FOR_PERLIO"
1737# endif
4a5df386
NC
1738# ifdef USE_FAST_STDIO
1739 " USE_FAST_STDIO"
1740# endif
98548bdf
NC
1741# ifdef USE_LOCALE
1742 " USE_LOCALE"
1743# endif
98548bdf
NC
1744# ifdef USE_LOCALE_CTYPE
1745 " USE_LOCALE_CTYPE"
1746# endif
5a8d8935
NC
1747# ifdef USE_PERL_ATOF
1748 " USE_PERL_ATOF"
1749# endif
0d311fbe
NC
1750# ifdef USE_SITECUSTOMIZE
1751 " USE_SITECUSTOMIZE"
1752# endif
4a5df386
NC
1753 ;
1754 PERL_UNUSED_ARG(cv);
1755 PERL_UNUSED_ARG(items);
1756
1757 EXTEND(SP, entries);
1758
1759 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1760 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1761 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1762
1763#ifdef __DATE__
1764# ifdef __TIME__
1765 PUSHs(Perl_newSVpvn_flags(aTHX_
1766 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1767 SVs_TEMP));
1768# else
1769 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1770 SVs_TEMP));
1771# endif
1772#else
1773 PUSHs(&PL_sv_undef);
1774#endif
1775
4a5df386
NC
1776 for (i = 1; i <= local_patch_count; i++) {
1777 /* This will be an undef, if PL_localpatches[i] is NULL. */
1778 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1779 }
1780
1781 XSRETURN(entries);
1782}
1783
be71fc8f
NC
1784#define INCPUSH_UNSHIFT 0x01
1785#define INCPUSH_ADD_OLD_VERS 0x02
1786#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1787#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1788#define INCPUSH_NOT_BASEDIR 0x10
1789#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1790#define INCPUSH_ADD_SUB_DIRS \
1791 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1792
312caa8e 1793STATIC void *
14dd3ad8 1794S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1795{
27da23d5 1796 dVAR;
2f9285f8 1797 PerlIO *rsfp;
312caa8e 1798 int argc = PL_origargc;
8f42b153 1799 char **argv = PL_origargv;
e1ec3a88 1800 const char *scriptname = NULL;
312caa8e 1801 VOL bool dosearch = FALSE;
c7030b81 1802 register char c;
737c24fc 1803 bool doextract = FALSE;
bd61b366 1804 const char *cddir = NULL;
ab019eaa 1805#ifdef USE_SITECUSTOMIZE
20ef40cf 1806 bool minus_f = FALSE;
ab019eaa 1807#endif
95670bde 1808 SV *linestr_sv = NULL;
5486870f 1809 bool add_read_e_script = FALSE;
87606032 1810 U32 lex_start_flags = 0;
009d90df 1811
ca7b837b 1812 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1813
6224f72b 1814 init_main_stash();
54310121 1815
c7030b81
NC
1816 {
1817 const char *s;
6224f72b
GS
1818 for (argc--,argv++; argc > 0; argc--,argv++) {
1819 if (argv[0][0] != '-' || !argv[0][1])
1820 break;
6224f72b
GS
1821 s = argv[0]+1;
1822 reswitch:
47f56822 1823 switch ((c = *s)) {
729a02f2 1824 case 'C':
1d5472a9
GS
1825#ifndef PERL_STRICT_CR
1826 case '\r':
1827#endif
6224f72b
GS
1828 case ' ':
1829 case '0':
1830 case 'F':
1831 case 'a':
1832 case 'c':
1833 case 'd':
1834 case 'D':
1835 case 'h':
1836 case 'i':
1837 case 'l':
1838 case 'M':
1839 case 'm':
1840 case 'n':
1841 case 'p':
1842 case 's':
1843 case 'u':
1844 case 'U':
1845 case 'v':
599cee73
PM
1846 case 'W':
1847 case 'X':
6224f72b 1848 case 'w':
97bd5664 1849 if ((s = moreswitches(s)))
6224f72b
GS
1850 goto reswitch;
1851 break;
33b78306 1852
1dbad523 1853 case 't':
22f7c9c9 1854 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1855 if( !PL_tainting ) {
1856 PL_taint_warn = TRUE;
1857 PL_tainting = TRUE;
1858 }
1859 s++;
1860 goto reswitch;
6224f72b 1861 case 'T':
22f7c9c9 1862 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1863 PL_tainting = TRUE;
317ea90d 1864 PL_taint_warn = FALSE;
6224f72b
GS
1865 s++;
1866 goto reswitch;
f86702cc 1867
bc9b29db
RH
1868 case 'E':
1869 PL_minus_E = TRUE;
1870 /* FALL THROUGH */
6224f72b 1871 case 'e':
f20b2998 1872 forbid_setid('e', FALSE);
3280af22 1873 if (!PL_e_script) {
396482e1 1874 PL_e_script = newSVpvs("");
5486870f 1875 add_read_e_script = TRUE;
6224f72b
GS
1876 }
1877 if (*++s)
3280af22 1878 sv_catpv(PL_e_script, s);
6224f72b 1879 else if (argv[1]) {
3280af22 1880 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1881 argc--,argv++;
1882 }
1883 else
47f56822 1884 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1885 sv_catpvs(PL_e_script, "\n");
6224f72b 1886 break;
afe37c7d 1887
20ef40cf 1888 case 'f':
f5542d3a 1889#ifdef USE_SITECUSTOMIZE
20ef40cf 1890 minus_f = TRUE;
f5542d3a 1891#endif
20ef40cf
GA
1892 s++;
1893 goto reswitch;
1894
6224f72b 1895 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1896 forbid_setid('I', FALSE);
bd61b366 1897 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1898 argc--,argv++;
1899 }
6224f72b 1900 if (s && *s) {
0df16ed7 1901 STRLEN len = strlen(s);
55b4bc1c 1902 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1903 }
1904 else
a67e862a 1905 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1906 break;
6224f72b 1907 case 'S':
f20b2998 1908 forbid_setid('S', FALSE);
6224f72b
GS
1909 dosearch = TRUE;
1910 s++;
1911 goto reswitch;
1912 case 'V':
7edfd0ef
NC
1913 {
1914 SV *opts_prog;
1915
7edfd0ef 1916 if (*++s != ':') {
37ca4a5b 1917 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1918 }
1919 else {
1920 ++s;
1921 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1922 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1923 0, s, 0);
1924 s += strlen(s);
1925 }
37ca4a5b 1926 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1927 /* don't look for script or read stdin */
1928 scriptname = BIT_BUCKET;
1929 goto reswitch;
6224f72b 1930 }
6224f72b 1931 case 'x':
737c24fc 1932 doextract = TRUE;
6224f72b 1933 s++;
304334da 1934 if (*s)
f4c556ac 1935 cddir = s;
6224f72b
GS
1936 break;
1937 case 0:
1938 break;
1939 case '-':
1940 if (!*++s || isSPACE(*s)) {
1941 argc--,argv++;
1942 goto switch_end;
1943 }
ee8bc8b7
NC
1944 /* catch use of gnu style long options.
1945 Both of these exit immediately. */
1946 if (strEQ(s, "version"))
1947 minus_v();
1948 if (strEQ(s, "help"))
1949 usage();
6224f72b
GS
1950 s--;
1951 /* FALL THROUGH */
1952 default:
cea2e8a9 1953 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1954 }
1955 }
c7030b81
NC
1956 }
1957
6224f72b 1958 switch_end:
54310121 1959
c7030b81
NC
1960 {
1961 char *s;
1962
f675dbe5
CB
1963 if (
1964#ifndef SECURE_INTERNAL_GETENV
1965 !PL_tainting &&
1966#endif
cf756827 1967 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1968 {
74288ac8
GS
1969 while (isSPACE(*s))
1970 s++;
317ea90d 1971 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1972 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1973 PL_tainting = TRUE;
317ea90d
MS
1974 PL_taint_warn = FALSE;
1975 }
74288ac8 1976 else {
bd61b366 1977 char *popt_copy = NULL;
74288ac8 1978 while (s && *s) {
54913509 1979 const char *d;
74288ac8
GS
1980 while (isSPACE(*s))
1981 s++;
1982 if (*s == '-') {
1983 s++;
1984 if (isSPACE(*s))
1985 continue;
1986 }
4ea8f8fb 1987 d = s;
74288ac8
GS
1988 if (!*s)
1989 break;
2b622f1a 1990 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1991 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1992 while (++s && *s) {
1993 if (isSPACE(*s)) {
cf756827 1994 if (!popt_copy) {
bfa6c418
NC
1995 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1996 s = popt_copy + (s - d);
1997 d = popt_copy;
cf756827 1998 }
4ea8f8fb
MS
1999 *s++ = '\0';
2000 break;
2001 }
2002 }
1c4db469 2003 if (*d == 't') {
317ea90d
MS
2004 if( !PL_tainting ) {
2005 PL_taint_warn = TRUE;
2006 PL_tainting = TRUE;
2007 }
1c4db469 2008 } else {
97bd5664 2009 moreswitches(d);
1c4db469 2010 }
6224f72b 2011 }
6224f72b
GS
2012 }
2013 }
c7030b81 2014 }
a0d0e21e 2015
c29067d7
CH
2016 /* Set $^X early so that it can be used for relocatable paths in @INC */
2017 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2018 assert (!PL_tainted);
2019 TAINT;
2020 S_set_caret_X(aTHX);
2021 TAINT_NOT;
2022
43c0c913 2023#if defined(USE_SITECUSTOMIZE)
20ef40cf 2024 if (!minus_f) {
43c0c913 2025 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2026 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2027 ie a q() operator with a NUL byte as a the delimiter. This avoids
2028 problems with pathnames containing (say) ' */
43c0c913
NC
2029# ifdef PERL_IS_MINIPERL
2030 AV *const inc = GvAV(PL_incgv);
2031 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2032
2033 if (inc0) {
2034 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2035 Perl_newSVpvf(aTHX_
fc81b718
NC
2036 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2037 0, *inc0, 0,
2038 0, *inc0, 0));
43c0c913
NC
2039 }
2040# else
2041 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2042 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2043 if (raw_sitelib) {
2044 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2045 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2046 INCPUSH_CAN_RELOCATE);
2047 const char *const sitelib = SvPVX(sitelib_sv);
2048 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2049 Perl_newSVpvf(aTHX_
2050 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2051 0, sitelib, 0,
2052 0, sitelib, 0));
2053 assert (SvREFCNT(sitelib_sv) == 1);
2054 SvREFCNT_dec(sitelib_sv);
2055 }
43c0c913 2056# endif
20ef40cf
GA
2057 }
2058#endif
2059
6224f72b
GS
2060 if (!scriptname)
2061 scriptname = argv[0];
3280af22 2062 if (PL_e_script) {
6224f72b
GS
2063 argc++,argv--;
2064 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2065 }
bd61b366 2066 else if (scriptname == NULL) {
6224f72b
GS
2067#ifdef MSDOS
2068 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2069 moreswitches("h");
6224f72b
GS
2070#endif
2071 scriptname = "-";
2072 }
2073
b7975bdd 2074 assert (!PL_tainted);
2cace6ac 2075 init_perllib();
6224f72b 2076
a52eba0e 2077 {
f20b2998 2078 bool suidscript = FALSE;
829372d3 2079
8d113837 2080 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2081 if (!rsfp) {
2082 rsfp = PerlIO_stdin();
87606032 2083 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2084 }
6224f72b 2085
b24bc095 2086 validate_suid(rsfp);
6224f72b 2087
64ca3a65 2088#ifndef PERL_MICRO
a52eba0e
NC
2089# if defined(SIGCHLD) || defined(SIGCLD)
2090 {
2091# ifndef SIGCHLD
2092# define SIGCHLD SIGCLD
2093# endif
2094 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2095 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2096 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2097 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2098 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2099 }
0b5b802d 2100 }
a52eba0e 2101# endif
64ca3a65 2102#endif
0b5b802d 2103
737c24fc 2104 if (doextract) {
faef540c 2105
f20b2998 2106 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2107 setuid scripts. */
2108 forbid_setid('x', suidscript);
f20b2998 2109 /* Hence you can't get here if suidscript is true */
faef540c 2110
95670bde
NC
2111 linestr_sv = newSV_type(SVt_PV);
2112 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2113 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2114 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2115 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2116 }
f4c556ac 2117 }
6224f72b 2118
ea726b52 2119 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2120 CvUNIQUE_on(PL_compcv);
2121
dd2155a4 2122 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2123
dd69841b
BB
2124 PL_isarev = newHV();
2125
0c4f7ff0 2126 boot_core_PerlIO();
6224f72b 2127 boot_core_UNIVERSAL();
e1a479c5 2128 boot_core_mro();
4a5df386 2129 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2130
2131 if (xsinit)
acfe0abc 2132 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2133#ifndef PERL_MICRO
d0d72822 2134#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2135 init_os_extras();
6224f72b 2136#endif
64ca3a65 2137#endif
6224f72b 2138
29209bc5 2139#ifdef USE_SOCKS
1b9c9cf5
DH
2140# ifdef HAS_SOCKS5_INIT
2141 socks5_init(argv[0]);
2142# else
29209bc5 2143 SOCKSinit(argv[0]);
1b9c9cf5 2144# endif
ac27b0f5 2145#endif
29209bc5 2146
6224f72b
GS
2147 init_predump_symbols();
2148 /* init_postdump_symbols not currently designed to be called */
2149 /* more than once (ENV isn't cleared first, for example) */
2150 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2151 if (!PL_do_undump)
6224f72b
GS
2152 init_postdump_symbols(argc,argv,env);
2153
27da23d5
JH
2154 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2155 * or explicitly in some platforms.
085a54d9 2156 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2157 * look like the user wants to use UTF-8. */
a0fd4948 2158#if defined(__SYMBIAN32__)
27da23d5
JH
2159 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2160#endif
e27b5b51 2161# ifndef PERL_IS_MINIPERL
06e66572
JH
2162 if (PL_unicode) {
2163 /* Requires init_predump_symbols(). */
a05d7ebb 2164 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2165 IO* io;
2166 PerlIO* fp;
2167 SV* sv;
2168
a05d7ebb 2169 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2170 * and the default open disciplines. */
a05d7ebb
JH
2171 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2172 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2173 (fp = IoIFP(io)))
2174 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2175 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2176 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2177 (fp = IoOFP(io)))
2178 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2179 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2180 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2181 (fp = IoOFP(io)))
2182 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2183 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2184 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2185 SVt_PV)))) {
a05d7ebb
JH
2186 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2187 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2188 if (in) {
2189 if (out)
76f68e9b 2190 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2191 else
76f68e9b 2192 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2193 }
2194 else if (out)
76f68e9b 2195 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2196 SvSETMAGIC(sv);
2197 }
b310b053
JH
2198 }
2199 }
e27b5b51 2200#endif
b310b053 2201
c7030b81
NC
2202 {
2203 const char *s;
4ffa73a3
JH
2204 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2205 if (strEQ(s, "unsafe"))
2206 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2207 else if (strEQ(s, "safe"))
2208 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2209 else
2210 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2211 }
c7030b81 2212 }
4ffa73a3 2213
81d86705 2214#ifdef PERL_MAD
c7030b81
NC
2215 {
2216 const char *s;
81d86705
NC
2217 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2218 PL_madskills = 1;
2219 PL_minus_c = 1;
2220 if (!s || !s[0])
2221 PL_xmlfp = PerlIO_stdout();
2222 else {
2223 PL_xmlfp = PerlIO_open(s, "w");
2224 if (!PL_xmlfp)
2225 Perl_croak(aTHX_ "Can't open %s", s);
2226 }
1a9a51d4 2227 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2228 }
c7030b81
NC
2229 }
2230
2231 {
2232 const char *s;
81d86705
NC
2233 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2234 PL_madskills = atoi(s);
1a9a51d4 2235 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2236 }
c7030b81 2237 }
81d86705
NC
2238#endif
2239
87606032 2240 lex_start(linestr_sv, rsfp, lex_start_flags);
95670bde
NC
2241 if(linestr_sv)
2242 SvREFCNT_dec(linestr_sv);
2243
219f7226 2244 PL_subname = newSVpvs("main");
6224f72b 2245
5486870f
DM
2246 if (add_read_e_script)
2247 filter_add(read_e_script, NULL);
2248
6224f72b
GS
2249 /* now parse the script */
2250
93189314 2251 SETERRNO(0,SS_NORMAL);
28ac2b49 2252 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2253 if (PL_minus_c)
cea2e8a9 2254 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2255 else {
cea2e8a9 2256 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2257 PL_origfilename);
6224f72b
GS
2258 }
2259 }
57843af0 2260 CopLINE_set(PL_curcop, 0);
03d9f026 2261 SET_CURSTASH(PL_defstash);
3280af22
NIS
2262 if (PL_e_script) {
2263 SvREFCNT_dec(PL_e_script);
a0714e2c 2264 PL_e_script = NULL;
6224f72b
GS
2265 }
2266
3280af22 2267 if (PL_do_undump)
6224f72b
GS
2268 my_unexec();
2269
57843af0
GS
2270 if (isWARN_ONCE) {
2271 SAVECOPFILE(PL_curcop);
2272 SAVECOPLINE(PL_curcop);
3280af22 2273 gv_check(PL_defstash);
57843af0 2274 }
6224f72b
GS
2275
2276 LEAVE;
2277 FREETMPS;
2278
2279#ifdef MYMALLOC
f6a607bc
RGS
2280 {
2281 const char *s;
6224f72b
GS
2282 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2283 dump_mstats("after compilation:");
f6a607bc 2284 }
6224f72b
GS
2285#endif
2286
2287 ENTER;
febb3a6d 2288 PL_restartjmpenv = NULL;
3280af22 2289 PL_restartop = 0;
312caa8e 2290 return NULL;
6224f72b
GS
2291}
2292
954c1994
GS
2293/*
2294=for apidoc perl_run
2295
2296Tells a Perl interpreter to run. See L<perlembed>.
2297
2298=cut
2299*/
2300
6224f72b 2301int
0cb96387 2302perl_run(pTHXx)
6224f72b 2303{
97aff369 2304 dVAR;
6224f72b 2305 I32 oldscope;
14dd3ad8 2306 int ret = 0;
db36c5a1 2307 dJMPENV;
6224f72b 2308
7918f24d
NC
2309 PERL_ARGS_ASSERT_PERL_RUN;
2310#ifndef MULTIPLICITY
ed6c66dd 2311 PERL_UNUSED_ARG(my_perl);
7918f24d 2312#endif
9d4ba2ae 2313
3280af22 2314 oldscope = PL_scopestack_ix;
96e176bf
CL
2315#ifdef VMS
2316 VMSISH_HUSHED = 0;
2317#endif
6224f72b 2318
14dd3ad8 2319 JMPENV_PUSH(ret);
6224f72b
GS
2320 switch (ret) {
2321 case 1:
2322 cxstack_ix = -1; /* start context stack again */
312caa8e 2323 goto redo_body;
14dd3ad8 2324 case 0: /* normal completion */
14dd3ad8
GS
2325 redo_body:
2326 run_body(oldscope);
14dd3ad8
GS
2327 /* FALL THROUGH */
2328 case 2: /* my_exit() */
3280af22 2329 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2330 LEAVE;
2331 FREETMPS;
03d9f026 2332 SET_CURSTASH(PL_defstash);
3a1ee7e8 2333 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2334 PL_endav && !PL_minus_c) {
ca7b837b 2335 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2336 call_list(oldscope, PL_endav);
9ebf26ad 2337 }
6224f72b
GS
2338#ifdef MYMALLOC
2339 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2340 dump_mstats("after execution: ");
2341#endif
37038d91 2342 ret = STATUS_EXIT;
14dd3ad8 2343 break;
6224f72b 2344 case 3:
312caa8e
CS
2345 if (PL_restartop) {
2346 POPSTACK_TO(PL_mainstack);
2347 goto redo_body;
6224f72b 2348 }
5637ef5b 2349 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2350 FREETMPS;
14dd3ad8
GS
2351 ret = 1;
2352 break;
6224f72b
GS
2353 }
2354
14dd3ad8
GS
2355 JMPENV_POP;
2356 return ret;
312caa8e
CS
2357}
2358
dd374669 2359STATIC void
14dd3ad8
GS
2360S_run_body(pTHX_ I32 oldscope)
2361{
97aff369 2362 dVAR;
6224f72b 2363 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2364 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2365
3280af22 2366 if (!PL_restartop) {
81d86705
NC
2367#ifdef PERL_MAD
2368 if (PL_xmlfp) {
2369 xmldump_all();
2370 exit(0); /* less likely to core dump than my_exit(0) */
2371 }
2372#endif
cf2782cd 2373#ifdef DEBUGGING
f0e3f042
CS
2374 if (DEBUG_x_TEST || DEBUG_B_TEST)
2375 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2376 if (!DEBUG_q_TEST)
2377 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2378#endif
6224f72b 2379
3280af22 2380 if (PL_minus_c) {
bf49b057 2381 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2382 my_exit(0);
2383 }
3280af22 2384 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2385 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2386 if (PL_initav) {
ca7b837b 2387 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2388 call_list(oldscope, PL_initav);
9ebf26ad 2389 }
f1fac472 2390#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2391 if (PL_main_root && PL_main_root->op_slabbed)
2392 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2393#endif
6224f72b
GS
2394 }
2395
2396 /* do it */
2397
ca7b837b 2398 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2399
3280af22 2400 if (PL_restartop) {
febb3a6d 2401 PL_restartjmpenv = NULL;
533c011a 2402 PL_op = PL_restartop;
3280af22 2403 PL_restartop = 0;
cea2e8a9 2404 CALLRUNOPS(aTHX);
6224f72b 2405 }
3280af22
NIS
2406 else if (PL_main_start) {
2407 CvDEPTH(PL_main_cv) = 1;
533c011a 2408 PL_op = PL_main_start;
cea2e8a9 2409 CALLRUNOPS(aTHX);
6224f72b 2410 }
f6b3007c 2411 my_exit(0);
118e2215 2412 assert(0); /* NOTREACHED */
6224f72b
GS
2413}
2414
954c1994 2415/*
ccfc67b7
JH
2416=head1 SV Manipulation Functions
2417
954c1994
GS
2418=for apidoc p||get_sv
2419
64ace3f8
NC
2420Returns the SV of the specified Perl scalar. C<flags> are passed to
2421C<gv_fetchpv>. If C<GV_ADD> is set and the
2422Perl variable does not exist then it will be created. If C<flags> is zero
2423and the variable does not exist then NULL is returned.
954c1994
GS
2424
2425=cut
2426*/
2427
6224f72b 2428SV*
64ace3f8 2429Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2430{
2431 GV *gv;
7918f24d
NC
2432
2433 PERL_ARGS_ASSERT_GET_SV;
2434
64ace3f8 2435 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2436 if (gv)
2437 return GvSV(gv);
a0714e2c 2438 return NULL;
6224f72b
GS
2439}
2440
954c1994 2441/*
ccfc67b7
JH
2442=head1 Array Manipulation Functions
2443
954c1994
GS
2444=for apidoc p||get_av
2445
f0b90de1
SF
2446Returns the AV of the specified Perl global or package array with the given
2447name (so it won't work on lexical variables). C<flags> are passed
2448to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2449Perl variable does not exist then it will be created. If C<flags> is zero
2450and the variable does not exist then NULL is returned.
954c1994 2451
f0b90de1
SF
2452Perl equivalent: C<@{"$name"}>.
2453
954c1994
GS
2454=cut
2455*/
2456
6224f72b 2457AV*
cbfd0a87 2458Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2459{
cbfd0a87 2460 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2461
2462 PERL_ARGS_ASSERT_GET_AV;
2463
cbfd0a87 2464 if (flags)
6224f72b
GS
2465 return GvAVn(gv);
2466 if (gv)
2467 return GvAV(gv);
7d49f689 2468 return NULL;
6224f72b
GS
2469}
2470
954c1994 2471/*
ccfc67b7
JH
2472=head1 Hash Manipulation Functions
2473
954c1994
GS
2474=for apidoc p||get_hv
2475
6673a63c
NC
2476Returns the HV of the specified Perl hash. C<flags> are passed to
2477C<gv_fetchpv>. If C<GV_ADD> is set and the
2478Perl variable does not exist then it will be created. If C<flags> is zero
2479and the variable does not exist then NULL is returned.
954c1994
GS
2480
2481=cut
2482*/
2483
6224f72b 2484HV*
6673a63c 2485Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2486{
6673a63c 2487 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2488
2489 PERL_ARGS_ASSERT_GET_HV;
2490
6673a63c 2491 if (flags)
a0d0e21e
LW
2492 return GvHVn(gv);
2493 if (gv)
2494 return GvHV(gv);
5c284bb0 2495 return NULL;
a0d0e21e
LW
2496}
2497
954c1994 2498/*
ccfc67b7
JH
2499=head1 CV Manipulation Functions
2500
780a5241
NC
2501=for apidoc p||get_cvn_flags
2502
2503Returns the CV of the specified Perl subroutine. C<flags> are passed to
2504C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2505exist then it will be declared (which has the same effect as saying
2506C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2507then NULL is returned.
2508
954c1994
GS
2509=for apidoc p||get_cv
2510
780a5241 2511Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2512
2513=cut
2514*/
2515
a0d0e21e 2516CV*
780a5241 2517Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2518{
780a5241 2519 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2520
2521 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2522
334dda80
FC
2523 /* XXX this is probably not what they think they're getting.
2524 * It has the same effect as "sub name;", i.e. just a forward
2525 * declaration! */
780a5241 2526 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2527 return newSTUB(gv,0);
780a5241 2528 }
a0d0e21e 2529 if (gv)
8ebc5c01 2530 return GvCVu(gv);
601f1833 2531 return NULL;
a0d0e21e
LW
2532}
2533
2c67934f
NC
2534/* Nothing in core calls this now, but we can't replace it with a macro and
2535 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2536CV*
2537Perl_get_cv(pTHX_ const char *name, I32 flags)
2538{
7918f24d
NC
2539 PERL_ARGS_ASSERT_GET_CV;
2540
780a5241
NC
2541 return get_cvn_flags(name, strlen(name), flags);
2542}
2543
79072805
LW
2544/* Be sure to refetch the stack pointer after calling these routines. */
2545
954c1994 2546/*
ccfc67b7
JH
2547
2548=head1 Callback Functions
2549
954c1994
GS
2550=for apidoc p||call_argv
2551
f0b90de1
SF
2552Performs a callback to the specified named and package-scoped Perl subroutine
2553with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2554
2555Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2556
2557=cut
2558*/
2559
a0d0e21e 2560I32
8f42b153 2561Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2562
8ac85365
NIS
2563 /* See G_* flags in cop.h */
2564 /* null terminated arg list */
8990e307 2565{
97aff369 2566 dVAR;
a0d0e21e 2567 dSP;
8990e307 2568
7918f24d
NC
2569 PERL_ARGS_ASSERT_CALL_ARGV;
2570
924508f0 2571 PUSHMARK(SP);
a0d0e21e 2572 if (argv) {
8990e307 2573 while (*argv) {
6e449a3a 2574 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2575 argv++;
2576 }
a0d0e21e 2577 PUTBACK;
8990e307 2578 }
864dbfa3 2579 return call_pv(sub_name, flags);
8990e307
LW
2580}
2581
954c1994
GS
2582/*
2583=for apidoc p||call_pv
2584
2585Performs a callback to the specified Perl sub. See L<perlcall>.
2586
2587=cut
2588*/
2589
a0d0e21e 2590I32
864dbfa3 2591Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2592 /* name of the subroutine */
2593 /* See G_* flags in cop.h */
a0d0e21e 2594{
7918f24d
NC
2595 PERL_ARGS_ASSERT_CALL_PV;
2596
0da0e728 2597 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2598}
2599
954c1994
GS
2600/*
2601=for apidoc p||call_method
2602
2603Performs a callback to the specified Perl method. The blessed object must
2604be on the stack. See L<perlcall>.
2605
2606=cut
2607*/
2608
a0d0e21e 2609I32
864dbfa3 2610Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2611 /* name of the subroutine */
2612 /* See G_* flags in cop.h */
a0d0e21e 2613{
46ca9bac 2614 STRLEN len;
7918f24d
NC
2615 PERL_ARGS_ASSERT_CALL_METHOD;
2616
46ca9bac 2617 len = strlen(methname);
2618
2619 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2620 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2621}
2622
2623/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2624/*
2625=for apidoc p||call_sv
2626
2627Performs a callback to the Perl sub whose name is in the SV. See
2628L<perlcall>.
2629
2630=cut
2631*/
2632
a0d0e21e 2633I32
001d637e 2634Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2635 /* See G_* flags in cop.h */
a0d0e21e 2636{
27da23d5 2637 dVAR; dSP;
a0d0e21e 2638 LOGOP myop; /* fake syntax tree node */
968b3946 2639 UNOP method_op;
aa689395 2640 I32 oldmark;
8ea43dc8 2641 VOL I32 retval = 0;
a0d0e21e 2642 I32 oldscope;
54310121 2643 bool oldcatch = CATCH_GET;
6224f72b 2644 int ret;
c4420975 2645 OP* const oldop = PL_op;
db36c5a1 2646 dJMPENV;
1e422769 2647
7918f24d
NC
2648 PERL_ARGS_ASSERT_CALL_SV;
2649
a0d0e21e
LW
2650 if (flags & G_DISCARD) {
2651 ENTER;
2652 SAVETMPS;
2653 }
2f8edad0
NC
2654 if (!(flags & G_WANT)) {
2655 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2656 */
2657 flags |= G_SCALAR;
2658 }
a0d0e21e 2659
aa689395 2660 Zero(&myop, 1, LOGOP);
5f66b61c 2661 myop.op_next = NULL;
f51d4af5 2662 if (!(flags & G_NOARGS))
aa689395 2663 myop.op_flags |= OPf_STACKED;
4f911530 2664 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2665 SAVEOP();
533c011a 2666 PL_op = (OP*)&myop;
aa689395 2667
3280af22
NIS
2668 EXTEND(PL_stack_sp, 1);
2669 *++PL_stack_sp = sv;
aa689395 2670 oldmark = TOPMARK;
3280af22 2671 oldscope = PL_scopestack_ix;
a0d0e21e 2672
3280af22 2673 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2674 /* Handle first BEGIN of -d. */
3280af22 2675 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2676 /* Try harder, since this may have been a sighandler, thus
2677 * curstash may be meaningless. */
ea726b52 2678 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2679 && !(flags & G_NODEBUG))
533c011a 2680 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2681
968b3946
GS
2682 if (flags & G_METHOD) {
2683 Zero(&method_op, 1, UNOP);
2684 method_op.op_next = PL_op;
2685 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2686 method_op.op_type = OP_METHOD;
968b3946 2687 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2688 myop.op_type = OP_ENTERSUB;
f39d0b86 2689 PL_op = (OP*)&method_op;
968b3946
GS
2690 }
2691
312caa8e 2692 if (!(flags & G_EVAL)) {
0cdb2077 2693 CATCH_SET(TRUE);
d6f07c05 2694 CALL_BODY_SUB((OP*)&myop);
312caa8e 2695 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2696 CATCH_SET(oldcatch);
312caa8e
CS
2697 }
2698 else {
d78bda3d 2699 myop.op_other = (OP*)&myop;
3280af22 2700 PL_markstack_ptr--;
edb2152a 2701 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2702 PL_markstack_ptr++;
a0d0e21e 2703
14dd3ad8 2704 JMPENV_PUSH(ret);
edb2152a 2705
6224f72b
GS
2706 switch (ret) {
2707 case 0:
14dd3ad8 2708 redo_body:
d6f07c05 2709 CALL_BODY_SUB((OP*)&myop);
312caa8e 2710 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2711 if (!(flags & G_KEEPERR)) {
ab69dbc2 2712 CLEAR_ERRSV();
8433848b 2713 }
a0d0e21e 2714 break;
6224f72b 2715 case 1:
f86702cc 2716 STATUS_ALL_FAILURE;
a0d0e21e 2717 /* FALL THROUGH */
6224f72b 2718 case 2:
a0d0e21e 2719 /* my_exit() was called */
03d9f026 2720 SET_CURSTASH(PL_defstash);
a0d0e21e 2721 FREETMPS;
14dd3ad8 2722 JMPENV_POP;
f86702cc 2723 my_exit_jump();
118e2215 2724 assert(0); /* NOTREACHED */
6224f72b 2725 case 3:
3280af22 2726 if (PL_restartop) {
febb3a6d 2727 PL_restartjmpenv = NULL;
533c011a 2728 PL_op = PL_restartop;
3280af22 2729 PL_restartop = 0;
312caa8e 2730 goto redo_body;
a0d0e21e 2731 }
3280af22 2732 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2733 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2734 retval = 0;
2735 else {
2736 retval = 1;
3280af22 2737 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2738 }
312caa8e 2739 break;
a0d0e21e 2740 }
a0d0e21e 2741
edb2152a
NC
2742 if (PL_scopestack_ix > oldscope)
2743 delete_eval_scope();
14dd3ad8 2744 JMPENV_POP;
a0d0e21e 2745 }
1e422769 2746
a0d0e21e 2747 if (flags & G_DISCARD) {
3280af22 2748 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2749 retval = 0;
2750 FREETMPS;
2751 LEAVE;
2752 }
533c011a 2753 PL_op = oldop;
a0d0e21e
LW
2754 return retval;
2755}
2756
6e72f9df 2757/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2758
954c1994
GS
2759/*
2760=for apidoc p||eval_sv
2761
be064c4a
DM
2762Tells Perl to C<eval> the string in the SV. It supports the same flags
2763as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2764
2765=cut
2766*/
2767
a0d0e21e 2768I32
864dbfa3 2769Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2770
8ac85365 2771 /* See G_* flags in cop.h */
a0d0e21e 2772{
97aff369 2773 dVAR;
924508f0 2774 dSP;
a0d0e21e 2775 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2776 VOL I32 oldmark = SP - PL_stack_base;
2777 VOL I32 retval = 0;
6224f72b 2778 int ret;
c4420975 2779 OP* const oldop = PL_op;
db36c5a1 2780 dJMPENV;
84902520 2781
7918f24d
NC
2782 PERL_ARGS_ASSERT_EVAL_SV;
2783
4633a7c4
LW
2784 if (flags & G_DISCARD) {
2785 ENTER;
2786 SAVETMPS;
2787 }
2788
462e5cf6 2789 SAVEOP();
533c011a
NIS
2790 PL_op = (OP*)&myop;
2791 Zero(PL_op, 1, UNOP);
3280af22
NIS
2792 EXTEND(PL_stack_sp, 1);
2793 *++PL_stack_sp = sv;
79072805 2794
4633a7c4
LW
2795 if (!(flags & G_NOARGS))
2796 myop.op_flags = OPf_STACKED;
5f66b61c 2797 myop.op_next = NULL;
6e72f9df 2798 myop.op_type = OP_ENTEREVAL;
4f911530 2799 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2800 if (flags & G_KEEPERR)
2801 myop.op_flags |= OPf_SPECIAL;
d24ca0c5
DM
2802 if (PL_reg_state.re_reparsing)
2803 myop.op_private = OPpEVAL_COPHH;
4633a7c4 2804
dedbcade
DM
2805 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2806 * before a PUSHEVAL, which corrupts the stack after a croak */
2807 TAINT_PROPER("eval_sv()");
2808
14dd3ad8 2809 JMPENV_PUSH(ret);
6224f72b
GS
2810 switch (ret) {
2811 case 0:
14dd3ad8 2812 redo_body:
2ba65d5f
DM
2813 if (PL_op == (OP*)(&myop)) {
2814 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2815 if (!PL_op)
2816 goto fail; /* failed in compilation */
2817 }
4aca2f62 2818 CALLRUNOPS(aTHX);
312caa8e 2819 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2820 if (!(flags & G_KEEPERR)) {
ab69dbc2 2821 CLEAR_ERRSV();
8433848b 2822 }
4633a7c4 2823 break;
6224f72b 2824 case 1:
f86702cc 2825 STATUS_ALL_FAILURE;
4633a7c4 2826 /* FALL THROUGH */
6224f72b 2827 case 2:
4633a7c4 2828 /* my_exit() was called */
03d9f026 2829 SET_CURSTASH(PL_defstash);
4633a7c4 2830 FREETMPS;
14dd3ad8 2831 JMPENV_POP;
f86702cc 2832 my_exit_jump();
118e2215 2833 assert(0); /* NOTREACHED */
6224f72b 2834 case 3:
3280af22 2835 if (PL_restartop) {
febb3a6d 2836 PL_restartjmpenv = NULL;
533c011a 2837 PL_op = PL_restartop;
3280af22 2838 PL_restartop = 0;
312caa8e 2839 goto redo_body;
4633a7c4 2840 }
4aca2f62 2841 fail:
3280af22 2842 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2843 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2844 retval = 0;
2845 else {
2846 retval = 1;
3280af22 2847 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2848 }
312caa8e 2849 break;
4633a7c4
LW
2850 }
2851
14dd3ad8 2852 JMPENV_POP;
4633a7c4 2853 if (flags & G_DISCARD) {
3280af22 2854 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2855 retval = 0;
2856 FREETMPS;
2857 LEAVE;
2858 }
533c011a 2859 PL_op = oldop;
4633a7c4
LW
2860 return retval;
2861}
2862
954c1994
GS
2863/*
2864=for apidoc p||eval_pv
2865
2866Tells Perl to C<eval> the given string and return an SV* result.
2867
2868=cut
2869*/
2870
137443ea 2871SV*
864dbfa3 2872Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2873{
97aff369 2874 dVAR;
137443ea
PP
2875 dSP;
2876 SV* sv = newSVpv(p, 0);
2877
7918f24d
NC
2878 PERL_ARGS_ASSERT_EVAL_PV;
2879
864dbfa3 2880 eval_sv(sv, G_SCALAR);
137443ea
PP
2881 SvREFCNT_dec(sv);
2882
2883 SPAGAIN;
2884 sv = POPs;
2885 PUTBACK;
2886
2d8e6c8d 2887 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2888 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2889 }
137443ea
PP
2890
2891 return sv;
2892}
2893
4633a7c4
LW
2894/* Require a module. */
2895
954c1994 2896/*
ccfc67b7
JH
2897=head1 Embedding Functions
2898
954c1994
GS
2899=for apidoc p||require_pv
2900
7d3fb230
BS
2901Tells Perl to C<require> the file named by the string argument. It is
2902analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2903implemented that way; consider using load_module instead.
954c1994 2904
7d3fb230 2905=cut */
954c1994 2906
4633a7c4 2907void
864dbfa3 2908Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2909{
97aff369 2910 dVAR;
d3acc0f7 2911 dSP;
97aff369 2912 SV* sv;
7918f24d
NC
2913
2914 PERL_ARGS_ASSERT_REQUIRE_PV;
2915
e788e7d3 2916 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2917 PUTBACK;
be41e5d9
NC
2918 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2919 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2920 SPAGAIN;
2921 POPSTACK;
79072805
LW
2922}
2923
76e3520e 2924STATIC void
b6f82619 2925S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2926{
ab821d7f 2927 /* This message really ought to be max 23 lines.
75c72d73 2928 * Removed -h because the user already knows that option. Others? */
fb73857a 2929
1566c39d
NC
2930 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2931 minimum of 509 character string literals. */
27da23d5 2932 static const char * const usage_msg[] = {
1566c39d
NC
2933" -0[octal] specify record separator (\\0, if no argument)\n"
2934" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2935" -C[number/list] enables the listed Unicode features\n"
2936" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2937" -d[:debugger] run program under debugger\n"
2938" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2939" -e program one line of program (several -e's allowed, omit programfile)\n"
2940" -E program like -e, but enables all optional features\n"
2941" -f don't do $sitelib/sitecustomize.pl at startup\n"
2942" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2943" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2944" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2945" -l[octal] enable line ending processing, specifies line terminator\n"
2946" -[mM][-]module execute \"use/no module...\" before executing program\n"
2947" -n assume \"while (<>) { ... }\" loop around program\n"
2948" -p assume loop like -n but print line also, like sed\n"
2949" -s enable rudimentary parsing for switches after programfile\n"
2950" -S look for programfile using PATH environment variable\n",
2951" -t enable tainting warnings\n"
2952" -T enable tainting checks\n"
2953" -u dump core after parsing program\n"
2954" -U allow unsafe operations\n"
2955" -v print version, patchlevel and license\n"
2956" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2957" -w enable many useful warnings\n"
1566c39d
NC
2958" -W enable all warnings\n"
2959" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2960" -X disable all warnings\n"
2961" \n"
2962"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2963NULL
2964};
27da23d5 2965 const char * const *p = usage_msg;
1566c39d 2966 PerlIO *out = PerlIO_stdout();
fb73857a 2967
1566c39d
NC
2968 PerlIO_printf(out,
2969 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2970 PL_origargv[0]);
fb73857a 2971 while (*p)
1566c39d 2972 PerlIO_puts(out, *p++);
b6f82619 2973 my_exit(0);
4633a7c4
LW
2974}
2975
b4ab917c
DM
2976/* convert a string of -D options (or digits) into an int.
2977 * sets *s to point to the char after the options */
2978
2979#ifdef DEBUGGING
2980int
e1ec3a88 2981Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2982{
27da23d5 2983 static const char * const usage_msgd[] = {
651b8f1a
NC
2984 " Debugging flag values: (see also -d)\n"
2985 " p Tokenizing and parsing (with v, displays parse stack)\n"
2986 " s Stack snapshots (with v, displays all stacks)\n"
2987 " l Context (loop) stack processing\n"
2988 " t Trace execution\n"
2989 " o Method and overloading resolution\n",
2990 " c String/numeric conversions\n"
2991 " P Print profiling info, source file input state\n"
2992 " m Memory and SV allocation\n"
2993 " f Format processing\n"
2994 " r Regular expression parsing and execution\n"
2995 " x Syntax tree dump\n",
2996 " u Tainting checks\n"
2997 " H Hash dump -- usurps values()\n"
2998 " X Scratchpad allocation\n"
2999 " D Cleaning up\n"
56967202 3000 " S Op slab allocation\n"
651b8f1a
NC
3001 " T Tokenising\n"
3002 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3003 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3004 " v Verbose: use in conjunction with other flags\n"
3005 " C Copy On Write\n"
3006 " A Consistency checks on internal structures\n"
3007 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3008 " M trace smart match resolution\n"
3009 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3010 NULL
3011 };
b4ab917c 3012 int i = 0;
7918f24d
NC
3013
3014 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3015
b4ab917c
DM
3016 if (isALPHA(**s)) {
3017 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3018 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
3019
3020 for (; isALNUM(**s); (*s)++) {
c4420975 3021 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3022 if (d)
3023 i |= 1 << (d - debopts);
3024 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3025 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3026 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3027 }
3028 }
e6e64d9b 3029 else if (isDIGIT(**s)) {
b4ab917c
DM
3030 i = atoi(*s);
3031 for (; isALNUM(**s); (*s)++) ;
3032 }
ddcf8bc1 3033 else if (givehelp) {
06e869a4 3034 const char *const *p = usage_msgd;
651b8f1a 3035 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3036 }
b4ab917c
DM
3037# ifdef EBCDIC
3038 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3039 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3040 "-Dp not implemented on this platform\n");
3041# endif
3042 return i;
3043}
3044#endif
3045
79072805
LW
3046/* This routine handles any switches that can be given during run */
3047
c7030b81
NC
3048const char *
3049Perl_moreswitches(pTHX_ const char *s)
79072805 3050{
27da23d5 3051 dVAR;
84c133a0 3052 UV rschar;
0544e6df 3053 const char option = *s; /* used to remember option in -m/-M code */
79072805 3054
7918f24d
NC
3055 PERL_ARGS_ASSERT_MORESWITCHES;
3056
79072805
LW
3057 switch (*s) {
3058 case '0':
a863c7d1 3059 {
f2095865 3060 I32 flags = 0;
a3b680e6 3061 STRLEN numlen;
f2095865
JH
3062
3063 SvREFCNT_dec(PL_rs);
3064 if (s[1] == 'x' && s[2]) {
a3b680e6 3065 const char *e = s+=2;
f2095865
JH
3066 U8 *tmps;
3067
a3b680e6
AL
3068 while (*e)
3069 e++;
f2095865
JH
3070 numlen = e - s;
3071 flags = PERL_SCAN_SILENT_ILLDIGIT;
3072 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3073 if (s + numlen < e) {
3074 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3075 numlen = 0;
3076 s--;
3077 }
396482e1 3078 PL_rs = newSVpvs("");
c5661c80 3079 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3080 tmps = (U8*)SvPVX(PL_rs);
3081 uvchr_to_utf8(tmps, rschar);
3082 SvCUR_set(PL_rs, UNISKIP(rschar));
3083 SvUTF8_on(PL_rs);
3084 }
3085 else {
3086 numlen = 4;
3087 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3088 if (rschar & ~((U8)~0))
3089 PL_rs = &PL_sv_undef;
3090 else if (!rschar && numlen >= 2)
396482e1 3091 PL_rs = newSVpvs("");
f2095865
JH
3092 else {
3093 char ch = (char)rschar;
3094 PL_rs = newSVpvn(&ch, 1);
3095 }
3096 }
64ace3f8 3097 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3098 return s + numlen;
a863c7d1 3099 }
46487f74 3100 case 'C':
a05d7ebb 3101 s++;
dd374669 3102 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3103 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3104 PL_utf8cache = -1;
46487f74 3105 return s;
2304df62 3106 case 'F':
3280af22 3107 PL_minus_F = TRUE;
ebce5377
RGS
3108 PL_splitstr = ++s;
3109 while (*s && !isSPACE(*s)) ++s;
e49e380e 3110 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3111 return s;
79072805 3112 case 'a':
3280af22 3113 PL_minus_a = TRUE;
79072805
LW
3114 s++;
3115 return s;
3116 case 'c':
3280af22 3117 PL_minus_c = TRUE;
79072805
LW
3118 s++;
3119 return s;
3120 case 'd':
f20b2998 3121 forbid_setid('d', FALSE);
4633a7c4 3122 s++;
2cbb2ee1
RGS
3123
3124 /* -dt indicates to the debugger that threads will be used */
3125 if (*s == 't' && !isALNUM(s[1])) {
3126 ++s;
3127 my_setenv("PERL5DB_THREADED", "1");
3128 }
3129
70c94a19
RR
3130 /* The following permits -d:Mod to accepts arguments following an =
3131 in the fashion that -MSome::Mod does. */
3132 if (*s == ':' || *s == '=') {
b19934fb
NC
3133 const char *start;
3134 const char *end;
3135 SV *sv;
3136
3137 if (*++s == '-') {
3138 ++s;
3139 sv = newSVpvs("no Devel::");
3140 } else {
3141 sv = newSVpvs("use Devel::");
3142 }
3143
3144 start = s;
3145 end = s + strlen(s);
f85893a1 3146
b19934fb 3147 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3148 while(isALNUM(*s) || *s==':') ++s;
3149 if (*s != '=')
f85893a1 3150 sv_catpvn(sv, start, end - start);
70c94a19
RR
3151 else {
3152 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3153 /* Don't use NUL as q// delimiter here, this string goes in the
3154 * environment. */
3155 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3156 }
f85893a1 3157 s = end;
184f32ec 3158 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3159 SvREFCNT_dec(sv);
4633a7c4 3160 }
ed094faf 3161 if (!PL_perldb) {
3280af22 3162 PL_perldb = PERLDB_ALL;
a0d0e21e 3163 init_debugger();
ed094faf 3164 }
79072805
LW
3165 return s;
3166 case 'D':
0453d815 3167 {
79072805 3168#ifdef DEBUGGING
f20b2998 3169 forbid_setid('D', FALSE);
b4ab917c 3170 s++;
dd374669 3171 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3172#else /* !DEBUGGING */
0453d815 3173 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3174 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3175 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3176 for (s++; isALNUM(*s); s++) ;
79072805 3177#endif
79072805 3178 return s;
0453d815 3179 }
4633a7c4 3180 case 'h':
b6f82619 3181 usage();
79072805 3182 case 'i':
43c5f42d 3183 Safefree(PL_inplace);
c030f24b
GH
3184#if defined(__CYGWIN__) /* do backup extension automagically */
3185 if (*(s+1) == '\0') {
c86a4f2e 3186 PL_inplace = savepvs(".bak");
c030f24b
GH
3187 return s+1;
3188 }
3189#endif /* __CYGWIN__ */
5ef5d758 3190 {
d4c19fe8 3191 const char * const start = ++s;
5ef5d758
NC
3192 while (*s && !isSPACE(*s))
3193 ++s;
3194
3195 PL_inplace = savepvn(start, s - start);
3196 }
7b8d334a 3197 if (*s) {
5ef5d758 3198 ++s;
7b8d334a 3199 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3200 s++;
7b8d334a 3201 }
fb73857a 3202 return s;
4e49a025 3203 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3204 forbid_setid('I', FALSE);
fb73857a
PP
3205 ++s;
3206 while (*s && isSPACE(*s))
3207 ++s;
3208 if (*s) {
c7030b81 3209 const char *e, *p;
0df16ed7
GS
3210 p = s;
3211 /* ignore trailing spaces (possibly followed by other switches) */
3212 do {
3213 for (e = p; *e && !isSPACE(*e); e++) ;
3214 p = e;
3215 while (isSPACE(*p))
3216 p++;
3217 } while (*p && *p != '-');
55b4bc1c 3218 incpush(s, e-s,
e28f3139 3219 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3220 s = p;
3221 if (*s == '-')
3222 s++;
79072805
LW
3223 }
3224 else
a67e862a 3225 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3226 return s;
79072805 3227 case 'l':
3280af22 3228 PL_minus_l = TRUE;
79072805 3229 s++;
7889fe52
NIS
3230 if (PL_ors_sv) {
3231 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3232 PL_ors_sv = NULL;
7889fe52 3233 }
79072805 3234 if (isDIGIT(*s)) {
53305cf1 3235 I32 flags = 0;
a3b680e6 3236 STRLEN numlen;
396482e1 3237 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3238 numlen = 3 + (*s == '0');
3239 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3240 s += numlen;
3241 }
3242 else {
8bfdd7d9 3243 if (RsPARA(PL_rs)) {
396482e1 3244 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3245 }
3246 else {
8bfdd7d9 3247 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3248 }
79072805
LW
3249 }
3250 return s;
1a30305b 3251 case 'M':
f20b2998 3252 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3253 /* FALL THROUGH */
3254 case 'm':
f20b2998 3255 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3256 if (*++s) {
c7030b81 3257 const char *start;
b64cb68c 3258 const char *end;
11343788 3259 SV *sv;
e1ec3a88 3260 const char *use = "use ";
0544e6df 3261 bool colon = FALSE;
a5f75d66 3262 /* -M-foo == 'no foo' */
d0043bd1
NC
3263 /* Leading space on " no " is deliberate, to make both
3264 possibilities the same length. */
3265 if (*s == '-') { use = " no "; ++s; }
3266 sv = newSVpvn(use,4);
a5f75d66 3267 start = s;
1a30305b 3268 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3269 while(isALNUM(*s) || *s==':') {
3270 if( *s++ == ':' ) {
3271 if( *s == ':' )
3272 s++;
3273 else
3274 colon = TRUE;
3275 }
3276 }
3277 if (s == start)
3278 Perl_croak(aTHX_ "Module name required with -%c option",
3279 option);
3280 if (colon)
3281 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3282 "contains single ':'",
63da6837 3283 (int)(s - start), start, option);
b64cb68c 3284 end = s + strlen(s);
c07a80fd 3285 if (*s != '=') {
b64cb68c 3286 sv_catpvn(sv, start, end - start);
0544e6df 3287 if (option == 'm') {
c07a80fd 3288 if (*s != '\0')
cea2e8a9 3289 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3290 sv_catpvs( sv, " ()");
c07a80fd
PP
3291 }
3292 } else {
11343788 3293 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3294 /* Use NUL as q''-delimiter. */
3295 sv_catpvs(sv, " split(/,/,q\0");
3296 ++s;
3297 sv_catpvn(sv, s, end - s);
396482e1 3298 sv_catpvs(sv, "\0)");
c07a80fd 3299 }
b64cb68c 3300 s = end;
29a861e7 3301 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3302 }
3303 else
0544e6df 3304 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3305 return s;
79072805 3306 case 'n':
3280af22 3307 PL_minus_n = TRUE;
79072805
LW
3308 s++;
3309 return s;
3310 case 'p':
3280af22 3311 PL_minus_p = TRUE;
79072805
LW
3312 s++;
3313 return s;
3314 case 's':
f20b2998 3315 forbid_setid('s', FALSE);
3280af22 3316 PL_doswitches = TRUE;
79072805
LW
3317 s++;
3318 return s;
6537fe72 3319 case 't':
27a6968b 3320 case 'T':
6537fe72 3321 if (!PL_tainting)
27a6968b 3322 TOO_LATE_FOR(*s);
6537fe72 3323 s++;
463ee0b2 3324 return s;
79072805 3325 case 'u':
3280af22 3326 PL_do_undump = TRUE;
79072805
LW
3327 s++;
3328 return s;
3329 case 'U':
3280af22 3330 PL_unsafe = TRUE;
79072805
LW
3331 s++;
3332 return s;
3333 case 'v':
c4bc78d9
NC
3334 minus_v();
3335 case 'w':
3336 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3337 PL_dowarn |= G_WARN_ON;
3338 }
3339 s++;
3340 return s;
3341 case 'W':
3342 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3343 if (!specialWARN(PL_compiling.cop_warnings))
3344 PerlMemShared_free(PL_compiling.cop_warnings);
3345 PL_compiling.cop_warnings = pWARN_ALL ;
3346 s++;
3347 return s;
3348 case 'X':
3349 PL_dowarn = G_WARN_ALL_OFF;
3350 if (!specialWARN(PL_compiling.cop_warnings))
3351 PerlMemShared_free(PL_compiling.cop_warnings);
3352 PL_compiling.cop_warnings = pWARN_NONE ;
3353 s++;
3354 return s;
3355 case '*':
3356 case ' ':
3357 while( *s == ' ' )
3358 ++s;
3359 if (s[0] == '-') /* Additional switches on #! line. */
3360 return s+1;
3361 break;
3362 case '-':
3363 case 0:
3364#if defined(WIN32) || !defined(PERL_STRICT_CR)
3365 case '\r':
3366#endif
3367 case '\n':
3368 case '\t':
3369 break;
3370#ifdef ALTERNATE_SHEBANG
3371 case 'S': /* OS/2 needs -S on "extproc" line. */
3372 break;
3373#endif
4bb78d63
CB
3374 case 'e': case 'f': case 'x': case 'E':
3375#ifndef ALTERNATE_SHEBANG
3376 case 'S':
3377#endif
3378 case 'V':
c4bc78d9 3379 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3380 default:
3381 Perl_croak(aTHX_
3382 "Unrecognized switch: -%.1s (-h will show valid options)",s
3383 );
c4bc78d9
NC
3384 }
3385 return NULL;
3386}
3387
3388
3389STATIC void
3390S_minus_v(pTHX)
3391{
d7aa5382 3392 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3393 upg_version(PL_patchlevel, TRUE);
8e9464f1 3394#if !defined(DGUX)
46807d8e
YO
3395 {
3396 SV* level= vstringify(PL_patchlevel);
3397#ifdef PERL_PATCHNUM
23d483e2
NC
3398# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3399 SV *num = newSVpvs(PERL_PATCHNUM "*");
3400# else
3401 SV *num = newSVpvs(PERL_PATCHNUM);
3402# endif
46807d8e
YO
3403
3404 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3405 SvREFCNT_dec(level);
3406 level= num;
3407 } else {
d0a9311f 3408 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3409 SvREFCNT_dec(num);
3410 }
3411 #endif
3412 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3413 "\nThis is perl " STRINGIFY(PERL_REVISION)
3414 ", version " STRINGIFY(PERL_VERSION)
3415 ", subversion " STRINGIFY(PERL_SUBVERSION)
3416 " (%"SVf") built for " ARCHNAME, level
3417 );
46807d8e
YO
3418 SvREFCNT_dec(level);
3419 }
8e9464f1
JH
3420#else /* DGUX */
3421/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3422 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3423 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3424 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3425 PerlIO_printf(PerlIO_stdout(),
3426 Perl_form(aTHX_ " built under %s at %s %s\n",
3427 OSNAME, __DATE__, __TIME__));
3428 PerlIO_printf(PerlIO_stdout(),
3429 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3430 OSVERS));
8e9464f1 3431#endif /* !DGUX */
fb73857a
PP
3432#if defined(LOCAL_PATCH_COUNT)
3433 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3434 PerlIO_printf(PerlIO_stdout(),
3435 "\n(with %d registered patch%s, "
3436 "see perl -V for more detail)",
bb7a0f54 3437 LOCAL_PATCH_COUNT,
b0e47665 3438 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3439#endif
1a30305b 3440
b0e47665 3441 PerlIO_printf(PerlIO_stdout(),
fdfb76e4 3442 "\n\nCopyright 1987-2012, Larry Wall\n");
79072805 3443#ifdef MSDOS
b0e47665
GS
3444 PerlIO_printf(PerlIO_stdout(),
3445 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3446#endif
3447#ifdef DJGPP
b0e47665
GS
3448 PerlIO_printf(PerlIO_stdout(),
3449 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3450 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3451#endif
79072805 3452#ifdef OS2
b0e47665
GS
3453 PerlIO_printf(PerlIO_stdout(),
3454 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3455 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3456#endif
79072805 3457#ifdef atarist
b0e47665
GS
3458 PerlIO_printf(PerlIO_stdout(),
3459 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3460#endif
a3f9223b 3461#ifdef __BEOS__
b0e47665
GS
3462 PerlIO_printf(PerlIO_stdout(),
3463 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3464#endif
1d84e8df 3465#ifdef MPE
b0e47665 3466 PerlIO_printf(PerlIO_stdout(),
e583a879 3467 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3468#endif
9d116dd7 3469#ifdef OEMVS
b0e47665
GS
3470 PerlIO_printf(PerlIO_stdout(),
3471 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3472#endif
495c5fdc 3473#ifdef __VOS__
b0e47665 3474 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3475 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3476#endif
092bebab 3477#ifdef __OPEN_VM
b0e47665
GS
3478 PerlIO_printf(PerlIO_stdout(),
3479 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3480#endif
a1a0e61e 3481#ifdef POSIX_BC
b0e47665
GS
3482 PerlIO_printf(PerlIO_stdout(),
3483 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3484#endif
f83d2536 3485#ifdef EPOC
b0e47665 3486 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3487 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3488#endif
e1caacb4 3489#ifdef UNDER_CE
b475b3e6
JH
3490 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3491 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3492 wce_hitreturn();
3493#endif
a0fd4948 3494#ifdef __SYMBIAN32__
27da23d5
JH
3495 PerlIO_printf(PerlIO_stdout(),
3496 "Symbian port by Nokia, 2004-2005\n");
3497#endif
baed7233
DL
3498#ifdef BINARY_BUILD_NOTICE
3499 BINARY_BUILD_NOTICE;
3500#endif
b0e47665
GS
3501 PerlIO_printf(PerlIO_stdout(),
3502 "\n\
79072805 3503Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3504GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3505Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3506this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3507Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3508 my_exit(0);
79072805
LW
3509}
3510
3511/* compliments of Tom Christiansen */
3512
3513/* unexec() can be found in the Gnu emacs distribution */
ee580363 3514/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805 3515
25bbd826
CB
3516#ifdef VMS
3517#include <lib$routines.h>
3518#endif
3519
79072805 3520void
864dbfa3 3521Perl_my_unexec(pTHX)