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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
f1fac472
NC
1221#ifdef PERL_DEBUG_READONLY_OPS
1222 free(PL_slabs);
1223 PL_slabs = NULL;
1224 PL_slab_count = 0;
1225#endif
eba0f806 1226
56a2bab7 1227#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1228 /* No more IO - including error messages ! */
1229 PerlIO_cleanup(aTHX);
1230#endif
1231
9f4bd222 1232 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1233 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1234 for no arg - and will try and SvREFCNT_dec it.
1235 */
1236 SvREFCNT(&PL_sv_undef) = 0;
1237 SvREADONLY_off(&PL_sv_undef);
1238
3280af22 1239 Safefree(PL_origfilename);
bd61b366 1240 PL_origfilename = NULL;
43c5f42d 1241 Safefree(PL_reg_curpm);
82ba1be6 1242 Safefree(PL_reg_poscache);
dd28f7bb 1243 free_tied_hv_pool();
3280af22 1244 Safefree(PL_op_mask);
cf36064f 1245 Safefree(PL_psig_name);
bf9cdc68 1246 PL_psig_name = (SV**)NULL;
d525a7b2 1247 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1248 {
1249 /* We need to NULL PL_psig_pend first, so that
1250 signal handlers know not to use it */
1251 int *psig_save = PL_psig_pend;
1252 PL_psig_pend = (int*)NULL;
1253 Safefree(psig_save);
1254 }
a0714e2c 1255 PL_formfeed = NULL;
6e72f9df 1256 nuke_stacks();
bf9cdc68
RG
1257 PL_tainting = FALSE;
1258 PL_taint_warn = FALSE;
3280af22 1259 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1260 PL_debug = 0;
ac27b0f5 1261
a0d0e21e 1262 DEBUG_P(debprofdump());
d33b2eba 1263
e5dd39fc 1264#ifdef USE_REENTRANT_API
10bc17b6 1265 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1266#endif
1267
612f20c3
GS
1268 sv_free_arenas();
1269
5d9a96ca
DM
1270 while (PL_regmatch_slab) {
1271 regmatch_slab *s = PL_regmatch_slab;
1272 PL_regmatch_slab = PL_regmatch_slab->next;
1273 Safefree(s);
1274 }
1275
fc36a67e
PP
1276 /* As the absolutely last thing, free the non-arena SV for mess() */
1277
3280af22 1278 if (PL_mess_sv) {
f350b448
NC
1279 /* we know that type == SVt_PVMG */
1280
9c63abab 1281 /* it could have accumulated taint magic */
f350b448
NC
1282 MAGIC* mg;
1283 MAGIC* moremagic;
1284 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1285 moremagic = mg->mg_moremagic;
1286 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1287 && mg->mg_len >= 0)
1288 Safefree(mg->mg_ptr);
1289 Safefree(mg);
9c63abab 1290 }
f350b448 1291
fc36a67e 1292 /* we know that type >= SVt_PV */
8bd4d4c5 1293 SvPV_free(PL_mess_sv);
3280af22
NIS
1294 Safefree(SvANY(PL_mess_sv));
1295 Safefree(PL_mess_sv);
a0714e2c 1296 PL_mess_sv = NULL;
fc36a67e 1297 }
37038d91 1298 return STATUS_EXIT;
79072805
LW
1299}
1300
954c1994
GS
1301/*
1302=for apidoc perl_free
1303
1304Releases a Perl interpreter. See L<perlembed>.
1305
1306=cut
1307*/
1308
79072805 1309void
0cb96387 1310perl_free(pTHXx)
79072805 1311{
5174512c
NC
1312 dVAR;
1313
7918f24d
NC
1314 PERL_ARGS_ASSERT_PERL_FREE;
1315
c301d606
DM
1316 if (PL_veto_cleanup)
1317 return;
1318
7cb608b5 1319#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1320 {
1321 /*
1322 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1323 * value as we're probably hunting memory leaks then
1324 */
1325 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1326 if (!s || atoi(s) == 0) {
4fd0a9b8 1327 const U32 old_debug = PL_debug;
55ef9aae
MHM
1328 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1329 thread at thread exit. */
4fd0a9b8
NC
1330 if (DEBUG_m_TEST) {
1331 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1332 "free this thread's memory\n");
1333 PL_debug &= ~ DEBUG_m_FLAG;
1334 }
55ef9aae
MHM
1335 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1336 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1337 PL_debug = old_debug;
55ef9aae
MHM
1338 }
1339 }
7cb608b5
NC
1340#endif
1341
acfe0abc 1342#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1343# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1344 {
acfe0abc 1345# ifdef NETWARE
7af12a34 1346 void *host = nw_internal_host;
acfe0abc 1347# else
7af12a34 1348 void *host = w32_internal_host;
acfe0abc 1349# endif
7af12a34 1350 PerlMem_free(aTHXx);
acfe0abc 1351# ifdef NETWARE
7af12a34 1352 nw_delete_internal_host(host);
acfe0abc 1353# else
7af12a34 1354 win32_delete_internal_host(host);
acfe0abc 1355# endif
7af12a34 1356 }
1c0ca838
GS
1357# else
1358 PerlMem_free(aTHXx);
1359# endif
acfe0abc
GS
1360#else
1361 PerlMem_free(aTHXx);
76e3520e 1362#endif
79072805
LW
1363}
1364
b7f7fff6 1365#if defined(USE_ITHREADS)
aebd1ac7
GA
1366/* provide destructors to clean up the thread key when libperl is unloaded */
1367#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1368
826955bd 1369#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1370#pragma fini "perl_fini"
666ad1ec
GA
1371#elif defined(__sun) && !defined(__GNUC__)
1372#pragma fini (perl_fini)
aebd1ac7
GA
1373#endif
1374
0dbb1585
AL
1375static void
1376#if defined(__GNUC__)
1377__attribute__((destructor))
aebd1ac7 1378#endif
de009b76 1379perl_fini(void)
aebd1ac7 1380{
27da23d5 1381 dVAR;
c301d606 1382 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1383 FREE_THREAD_KEY;
1384}
1385
1386#endif /* WIN32 */
1387#endif /* THREADS */
1388
4b556e6c 1389void
864dbfa3 1390Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1391{
97aff369 1392 dVAR;
3280af22
NIS
1393 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1394 PL_exitlist[PL_exitlistlen].fn = fn;
1395 PL_exitlist[PL_exitlistlen].ptr = ptr;
1396 ++PL_exitlistlen;
4b556e6c
JD
1397}
1398
b7975bdd
NC
1399STATIC void
1400S_set_caret_X(pTHX) {
97aff369 1401 dVAR;
fafc274c 1402 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1403 if (tmpgv) {
0f1723e1 1404 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1405#if defined(OS2)
1406 sv_setpv(caret_x, os2_execname(aTHX));
1407#else
2982a345
NC
1408# ifdef USE_KERN_PROC_PATHNAME
1409 size_t size = 0;
1410 int mib[4];
1411 mib[0] = CTL_KERN;
1412 mib[1] = KERN_PROC;
1413 mib[2] = KERN_PROC_PATHNAME;
1414 mib[3] = -1;
1415
1416 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1417 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1418 sv_grow(caret_x, size);
1419
1420 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1421 && size > 2) {
1422 SvPOK_only(caret_x);
1423 SvCUR_set(caret_x, size - 1);
1424 SvTAINT(caret_x);
1425 return;
1426 }
1427 }
ae60cb46
NC
1428# elif defined(USE_NSGETEXECUTABLEPATH)
1429 char buf[1];
1430 uint32_t size = sizeof(buf);
ae60cb46
NC
1431
1432 _NSGetExecutablePath(buf, &size);
1433 if (size < MAXPATHLEN * MAXPATHLEN) {
1434 sv_grow(caret_x, size);
1435 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1436 char *const tidied = realpath(SvPVX(caret_x), NULL);
1437 if (tidied) {
1438 sv_setpv(caret_x, tidied);
1439 free(tidied);
1440 } else {
1441 SvPOK_only(caret_x);
1442 SvCUR_set(caret_x, size);
1443 }
1444 return;
1445 }
1446 }
2982a345 1447# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1448 char buf[MAXPATHLEN];
1449 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1450
1451 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1452 includes a spurious NUL which will cause $^X to fail in system
1453 or backticks (this will prevent extensions from being built and
1454 many tests from working). readlink is not meant to add a NUL.
1455 Normal readlink works fine.
1456 */
1457 if (len > 0 && buf[len-1] == '\0') {
1458 len--;
1459 }
1460
1461 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1462 returning the text "unknown" from the readlink rather than the path
1463 to the executable (or returning an error from the readlink). Any
1464 valid path has a '/' in it somewhere, so use that to validate the
1465 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1466 */
1467 if (len > 0 && memchr(buf, '/', len)) {
1468 sv_setpvn(caret_x, buf, len);
82552a95 1469 return;
700dd4f8 1470 }
82552a95
NC
1471# endif
1472 /* Fallback to this: */
0f1723e1 1473 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1474#endif
b7975bdd
NC
1475 }
1476}
1477
954c1994
GS
1478/*
1479=for apidoc perl_parse
1480
1481Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1482
1483=cut
1484*/
1485
03d9f026
FC
1486#define SET_CURSTASH(newstash) \
1487 if (PL_curstash != newstash) { \
1488 SvREFCNT_dec(PL_curstash); \
1489 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1490 }
1491
79072805 1492int
0cb96387 1493perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1494{
27da23d5 1495 dVAR;
6224f72b 1496 I32 oldscope;
6224f72b 1497 int ret;
db36c5a1 1498 dJMPENV;
8d063cd8 1499
7918f24d
NC
1500 PERL_ARGS_ASSERT_PERL_PARSE;
1501#ifndef MULTIPLICITY
ed6c66dd 1502 PERL_UNUSED_ARG(my_perl);
7918f24d 1503#endif
9d4ba2ae 1504
b0891165
JH
1505#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1506 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1507 * This MUST be done before any hash stores or fetches take place.
486ec47a 1508 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1509 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1510 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1511 if (!PL_rehash_seed_set)
1512 PL_rehash_seed = get_hash_seed();
b0891165 1513 {
9d4ba2ae 1514 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1515
1b6737cc
AL
1516 if (s && (atoi(s) == 1))
1517 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1518 }
1519#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1520
3280af22 1521 PL_origargc = argc;
e2975953 1522 PL_origargv = argv;
a0d0e21e 1523
a2722ac9
GA
1524 if (PL_origalen != 0) {
1525 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1526 }
1527 else {
3cb9023d
JH
1528 /* Set PL_origalen be the sum of the contiguous argv[]
1529 * elements plus the size of the env in case that it is
e9137a8e 1530 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1531 * as the maximum modifiable length of $0. In the worst case
1532 * the area we are able to modify is limited to the size of
43c32782 1533 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1534 * --jhi */
e1ec3a88 1535 const char *s = NULL;
54bfe034 1536 int i;
1b6737cc 1537 const UV mask =
7d8e7db3 1538 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1539 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1540 const UV aligned =
43c32782
JH
1541 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1542
1543 /* See if all the arguments are contiguous in memory. Note
1544 * that 'contiguous' is a loose term because some platforms
1545 * align the argv[] and the envp[]. If the arguments look
1546 * like non-aligned, assume that they are 'strictly' or
1547 * 'traditionally' contiguous. If the arguments look like
1548 * aligned, we just check that they are within aligned
1549 * PTRSIZE bytes. As long as no system has something bizarre
1550 * like the argv[] interleaved with some other data, we are
1551 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1552 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1553 while (*s) s++;
1554 for (i = 1; i < PL_origargc; i++) {
1555 if ((PL_origargv[i] == s + 1
43c32782 1556#ifdef OS2
c8941eeb 1557 || PL_origargv[i] == s + 2
43c32782 1558#endif
c8941eeb
JH
1559 )
1560 ||
1561 (aligned &&
1562 (PL_origargv[i] > s &&
1563 PL_origargv[i] <=
1564 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1565 )
1566 {
1567 s = PL_origargv[i];
1568 while (*s) s++;
1569 }
1570 else
1571 break;
54bfe034 1572 }
54bfe034 1573 }
a4a109c2
JD
1574
1575#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1576 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1577 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1578 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1579 ||
1580 (aligned &&
1581 (PL_origenviron[0] > s &&
1582 PL_origenviron[0] <=
1583 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1584 )
1585 {
9d419b5f 1586#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1587 s = PL_origenviron[0];
1588 while (*s) s++;
1589#endif
bd61b366 1590 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1591 /* Force copy of environment. */
1592 for (i = 1; PL_origenviron[i]; i++) {
1593 if (PL_origenviron[i] == s + 1
1594 ||
1595 (aligned &&
1596 (PL_origenviron[i] > s &&
1597 PL_origenviron[i] <=
1598 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1599 )
1600 {
1601 s = PL_origenviron[i];
1602 while (*s) s++;
1603 }
1604 else
1605 break;
54bfe034 1606 }
43c32782 1607 }
54bfe034 1608 }
a4a109c2
JD
1609#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1610
2d2af554 1611 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1612 }
1613
3280af22 1614 if (PL_do_undump) {
a0d0e21e
LW
1615
1616 /* Come here if running an undumped a.out. */
1617
3280af22
NIS
1618 PL_origfilename = savepv(argv[0]);
1619 PL_do_undump = FALSE;
a0d0e21e 1620 cxstack_ix = -1; /* start label stack again */
748a9306 1621 init_ids();
b7975bdd
NC
1622 assert (!PL_tainted);
1623 TAINT;
1624 S_set_caret_X(aTHX);
1625 TAINT_NOT;
a0d0e21e
LW
1626 init_postdump_symbols(argc,argv,env);
1627 return 0;
1628 }
1629
3280af22 1630 if (PL_main_root) {
3280af22 1631 op_free(PL_main_root);
5f66b61c 1632 PL_main_root = NULL;
ff0cee69 1633 }
5f66b61c 1634 PL_main_start = NULL;
3280af22 1635 SvREFCNT_dec(PL_main_cv);
601f1833 1636 PL_main_cv = NULL;
79072805 1637
3280af22
NIS
1638 time(&PL_basetime);
1639 oldscope = PL_scopestack_ix;
599cee73 1640 PL_dowarn = G_WARN_OFF;
f86702cc 1641
14dd3ad8 1642 JMPENV_PUSH(ret);
6224f72b 1643 switch (ret) {
312caa8e 1644 case 0:
14dd3ad8 1645 parse_body(env,xsinit);
9ebf26ad 1646 if (PL_unitcheckav) {
3c10abe3 1647 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1648 }
1649 if (PL_checkav) {
ca7b837b 1650 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1651 call_list(oldscope, PL_checkav);
9ebf26ad 1652 }
14dd3ad8
GS
1653 ret = 0;
1654 break;
6224f72b
GS
1655 case 1:
1656 STATUS_ALL_FAILURE;
1657 /* FALL THROUGH */
1658 case 2:
1659 /* my_exit() was called */
3280af22 1660 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1661 LEAVE;
1662 FREETMPS;
03d9f026 1663 SET_CURSTASH(PL_defstash);
9ebf26ad 1664 if (PL_unitcheckav) {
3c10abe3 1665 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1666 }
1667 if (PL_checkav) {
ca7b837b 1668 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1669 call_list(oldscope, PL_checkav);
9ebf26ad 1670 }
37038d91 1671 ret = STATUS_EXIT;
14dd3ad8 1672 break;
6224f72b 1673 case 3:
bf49b057 1674 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1675 ret = 1;
1676 break;
6224f72b 1677 }
14dd3ad8
GS
1678 JMPENV_POP;
1679 return ret;
1680}
1681
4a5df386
NC
1682/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1683 miniperl, and we need to see those flags reflected in the values here. */
1684
1685/* What this returns is subject to change. Use the public interface in Config.
1686 */
1687static void
1688S_Internals_V(pTHX_ CV *cv)
1689{
1690 dXSARGS;
1691#ifdef LOCAL_PATCH_COUNT
1692 const int local_patch_count = LOCAL_PATCH_COUNT;
1693#else
1694 const int local_patch_count = 0;
1695#endif
2dc296d2 1696 const int entries = 3 + local_patch_count;
4a5df386
NC
1697 int i;
1698 static char non_bincompat_options[] =
1699# ifdef DEBUGGING
1700 " DEBUGGING"
1701# endif
1702# ifdef NO_MATHOMS
0d311fbe 1703 " NO_MATHOMS"
4a5df386
NC
1704# endif
1705# ifdef PERL_DISABLE_PMC
1706 " PERL_DISABLE_PMC"
1707# endif
1708# ifdef PERL_DONT_CREATE_GVSV
1709 " PERL_DONT_CREATE_GVSV"
1710# endif
9a044a43
NC
1711# ifdef PERL_EXTERNAL_GLOB
1712 " PERL_EXTERNAL_GLOB"
1713# endif
4a5df386
NC
1714# ifdef PERL_IS_MINIPERL
1715 " PERL_IS_MINIPERL"
1716# endif
1717# ifdef PERL_MALLOC_WRAP
1718 " PERL_MALLOC_WRAP"
1719# endif
1720# ifdef PERL_MEM_LOG
1721 " PERL_MEM_LOG"
1722# endif
1723# ifdef PERL_MEM_LOG_NOIMPL
1724 " PERL_MEM_LOG_NOIMPL"
1725# endif
c3cf41ec
NC
1726# ifdef PERL_PRESERVE_IVUV
1727 " PERL_PRESERVE_IVUV"
1728# endif
c051e30b
NC
1729# ifdef PERL_RELOCATABLE_INCPUSH
1730 " PERL_RELOCATABLE_INCPUSH"
1731# endif
4a5df386
NC
1732# ifdef PERL_USE_DEVEL
1733 " PERL_USE_DEVEL"
1734# endif
1735# ifdef PERL_USE_SAFE_PUTENV
1736 " PERL_USE_SAFE_PUTENV"
1737# endif
a3749cf3
NC
1738# ifdef UNLINK_ALL_VERSIONS
1739 " UNLINK_ALL_VERSIONS"
1740# endif
de618ee4
NC
1741# ifdef USE_ATTRIBUTES_FOR_PERLIO
1742 " USE_ATTRIBUTES_FOR_PERLIO"
1743# endif
4a5df386
NC
1744# ifdef USE_FAST_STDIO
1745 " USE_FAST_STDIO"
1746# endif
98548bdf
NC
1747# ifdef USE_LOCALE
1748 " USE_LOCALE"
1749# endif
98548bdf
NC
1750# ifdef USE_LOCALE_CTYPE
1751 " USE_LOCALE_CTYPE"
1752# endif
5a8d8935
NC
1753# ifdef USE_PERL_ATOF
1754 " USE_PERL_ATOF"
1755# endif
0d311fbe
NC
1756# ifdef USE_SITECUSTOMIZE
1757 " USE_SITECUSTOMIZE"
1758# endif
4a5df386
NC
1759 ;
1760 PERL_UNUSED_ARG(cv);
1761 PERL_UNUSED_ARG(items);
1762
1763 EXTEND(SP, entries);
1764
1765 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1766 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1767 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1768
1769#ifdef __DATE__
1770# ifdef __TIME__
1771 PUSHs(Perl_newSVpvn_flags(aTHX_
1772 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1773 SVs_TEMP));
1774# else
1775 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1776 SVs_TEMP));
1777# endif
1778#else
1779 PUSHs(&PL_sv_undef);
1780#endif
1781
4a5df386
NC
1782 for (i = 1; i <= local_patch_count; i++) {
1783 /* This will be an undef, if PL_localpatches[i] is NULL. */
1784 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1785 }
1786
1787 XSRETURN(entries);
1788}
1789
be71fc8f
NC
1790#define INCPUSH_UNSHIFT 0x01
1791#define INCPUSH_ADD_OLD_VERS 0x02
1792#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1793#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1794#define INCPUSH_NOT_BASEDIR 0x10
1795#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1796#define INCPUSH_ADD_SUB_DIRS \
1797 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1798
312caa8e 1799STATIC void *
14dd3ad8 1800S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1801{
27da23d5 1802 dVAR;
2f9285f8 1803 PerlIO *rsfp;
312caa8e 1804 int argc = PL_origargc;
8f42b153 1805 char **argv = PL_origargv;
e1ec3a88 1806 const char *scriptname = NULL;
312caa8e 1807 VOL bool dosearch = FALSE;
c7030b81 1808 register char c;
737c24fc 1809 bool doextract = FALSE;
bd61b366 1810 const char *cddir = NULL;
ab019eaa 1811#ifdef USE_SITECUSTOMIZE
20ef40cf 1812 bool minus_f = FALSE;
ab019eaa 1813#endif
95670bde 1814 SV *linestr_sv = NULL;
5486870f 1815 bool add_read_e_script = FALSE;
87606032 1816 U32 lex_start_flags = 0;
009d90df 1817
ca7b837b 1818 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1819
6224f72b 1820 init_main_stash();
54310121 1821
c7030b81
NC
1822 {
1823 const char *s;
6224f72b
GS
1824 for (argc--,argv++; argc > 0; argc--,argv++) {
1825 if (argv[0][0] != '-' || !argv[0][1])
1826 break;
6224f72b
GS
1827 s = argv[0]+1;
1828 reswitch:
47f56822 1829 switch ((c = *s)) {
729a02f2 1830 case 'C':
1d5472a9
GS
1831#ifndef PERL_STRICT_CR
1832 case '\r':
1833#endif
6224f72b
GS
1834 case ' ':
1835 case '0':
1836 case 'F':
1837 case 'a':
1838 case 'c':
1839 case 'd':
1840 case 'D':
1841 case 'h':
1842 case 'i':
1843 case 'l':
1844 case 'M':
1845 case 'm':
1846 case 'n':
1847 case 'p':
1848 case 's':
1849 case 'u':
1850 case 'U':
1851 case 'v':
599cee73
PM
1852 case 'W':
1853 case 'X':
6224f72b 1854 case 'w':
97bd5664 1855 if ((s = moreswitches(s)))
6224f72b
GS
1856 goto reswitch;
1857 break;
33b78306 1858
1dbad523 1859 case 't':
22f7c9c9 1860 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1861 if( !PL_tainting ) {
1862 PL_taint_warn = TRUE;
1863 PL_tainting = TRUE;
1864 }
1865 s++;
1866 goto reswitch;
6224f72b 1867 case 'T':
22f7c9c9 1868 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1869 PL_tainting = TRUE;
317ea90d 1870 PL_taint_warn = FALSE;
6224f72b
GS
1871 s++;
1872 goto reswitch;
f86702cc 1873
bc9b29db
RH
1874 case 'E':
1875 PL_minus_E = TRUE;
1876 /* FALL THROUGH */
6224f72b 1877 case 'e':
f20b2998 1878 forbid_setid('e', FALSE);
3280af22 1879 if (!PL_e_script) {
396482e1 1880 PL_e_script = newSVpvs("");
5486870f 1881 add_read_e_script = TRUE;
6224f72b
GS
1882 }
1883 if (*++s)
3280af22 1884 sv_catpv(PL_e_script, s);
6224f72b 1885 else if (argv[1]) {
3280af22 1886 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1887 argc--,argv++;
1888 }
1889 else
47f56822 1890 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1891 sv_catpvs(PL_e_script, "\n");
6224f72b 1892 break;
afe37c7d 1893
20ef40cf 1894 case 'f':
f5542d3a 1895#ifdef USE_SITECUSTOMIZE
20ef40cf 1896 minus_f = TRUE;
f5542d3a 1897#endif
20ef40cf
GA
1898 s++;
1899 goto reswitch;
1900
6224f72b 1901 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1902 forbid_setid('I', FALSE);
bd61b366 1903 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1904 argc--,argv++;
1905 }
6224f72b 1906 if (s && *s) {
0df16ed7 1907 STRLEN len = strlen(s);
55b4bc1c 1908 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1909 }
1910 else
a67e862a 1911 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1912 break;
6224f72b 1913 case 'S':
f20b2998 1914 forbid_setid('S', FALSE);
6224f72b
GS
1915 dosearch = TRUE;
1916 s++;
1917 goto reswitch;
1918 case 'V':
7edfd0ef
NC
1919 {
1920 SV *opts_prog;
1921
7edfd0ef 1922 if (*++s != ':') {
37ca4a5b 1923 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1924 }
1925 else {
1926 ++s;
1927 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1928 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1929 0, s, 0);
1930 s += strlen(s);
1931 }
37ca4a5b 1932 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1933 /* don't look for script or read stdin */
1934 scriptname = BIT_BUCKET;
1935 goto reswitch;
6224f72b 1936 }
6224f72b 1937 case 'x':
737c24fc 1938 doextract = TRUE;
6224f72b 1939 s++;
304334da 1940 if (*s)
f4c556ac 1941 cddir = s;
6224f72b
GS
1942 break;
1943 case 0:
1944 break;
1945 case '-':
1946 if (!*++s || isSPACE(*s)) {
1947 argc--,argv++;
1948 goto switch_end;
1949 }
ee8bc8b7
NC
1950 /* catch use of gnu style long options.
1951 Both of these exit immediately. */
1952 if (strEQ(s, "version"))
1953 minus_v();
1954 if (strEQ(s, "help"))
1955 usage();
6224f72b
GS
1956 s--;
1957 /* FALL THROUGH */
1958 default:
cea2e8a9 1959 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1960 }
1961 }
c7030b81
NC
1962 }
1963
6224f72b 1964 switch_end:
54310121 1965
c7030b81
NC
1966 {
1967 char *s;
1968
f675dbe5
CB
1969 if (
1970#ifndef SECURE_INTERNAL_GETENV
1971 !PL_tainting &&
1972#endif
cf756827 1973 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1974 {
74288ac8
GS
1975 while (isSPACE(*s))
1976 s++;
317ea90d 1977 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1978 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1979 PL_tainting = TRUE;
317ea90d
MS
1980 PL_taint_warn = FALSE;
1981 }
74288ac8 1982 else {
bd61b366 1983 char *popt_copy = NULL;
74288ac8 1984 while (s && *s) {
54913509 1985 const char *d;
74288ac8
GS
1986 while (isSPACE(*s))
1987 s++;
1988 if (*s == '-') {
1989 s++;
1990 if (isSPACE(*s))
1991 continue;
1992 }
4ea8f8fb 1993 d = s;
74288ac8
GS
1994 if (!*s)
1995 break;
2b622f1a 1996 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1997 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1998 while (++s && *s) {
1999 if (isSPACE(*s)) {
cf756827 2000 if (!popt_copy) {
bfa6c418
NC
2001 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2002 s = popt_copy + (s - d);
2003 d = popt_copy;
cf756827 2004 }
4ea8f8fb
MS
2005 *s++ = '\0';
2006 break;
2007 }
2008 }
1c4db469 2009 if (*d == 't') {
317ea90d
MS
2010 if( !PL_tainting ) {
2011 PL_taint_warn = TRUE;
2012 PL_tainting = TRUE;
2013 }
1c4db469 2014 } else {
97bd5664 2015 moreswitches(d);
1c4db469 2016 }
6224f72b 2017 }
6224f72b
GS
2018 }
2019 }
c7030b81 2020 }
a0d0e21e 2021
c29067d7
CH
2022 /* Set $^X early so that it can be used for relocatable paths in @INC */
2023 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2024 assert (!PL_tainted);
2025 TAINT;
2026 S_set_caret_X(aTHX);
2027 TAINT_NOT;
2028
43c0c913 2029#if defined(USE_SITECUSTOMIZE)
20ef40cf 2030 if (!minus_f) {
43c0c913 2031 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2032 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2033 ie a q() operator with a NUL byte as a the delimiter. This avoids
2034 problems with pathnames containing (say) ' */
43c0c913
NC
2035# ifdef PERL_IS_MINIPERL
2036 AV *const inc = GvAV(PL_incgv);
2037 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2038
2039 if (inc0) {
2040 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2041 Perl_newSVpvf(aTHX_
fc81b718
NC
2042 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2043 0, *inc0, 0,
2044 0, *inc0, 0));
43c0c913
NC
2045 }
2046# else
2047 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2048 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2049 if (raw_sitelib) {
2050 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2051 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2052 INCPUSH_CAN_RELOCATE);
2053 const char *const sitelib = SvPVX(sitelib_sv);
2054 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2055 Perl_newSVpvf(aTHX_
2056 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2057 0, sitelib, 0,
2058 0, sitelib, 0));
2059 assert (SvREFCNT(sitelib_sv) == 1);
2060 SvREFCNT_dec(sitelib_sv);
2061 }
43c0c913 2062# endif
20ef40cf
GA
2063 }
2064#endif
2065
6224f72b
GS
2066 if (!scriptname)
2067 scriptname = argv[0];
3280af22 2068 if (PL_e_script) {
6224f72b
GS
2069 argc++,argv--;
2070 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2071 }
bd61b366 2072 else if (scriptname == NULL) {
6224f72b
GS
2073#ifdef MSDOS
2074 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2075 moreswitches("h");
6224f72b
GS
2076#endif
2077 scriptname = "-";
2078 }
2079
b7975bdd 2080 assert (!PL_tainted);
2cace6ac 2081 init_perllib();
6224f72b 2082
a52eba0e 2083 {
f20b2998 2084 bool suidscript = FALSE;
829372d3 2085
8d113837 2086 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2087 if (!rsfp) {
2088 rsfp = PerlIO_stdin();
87606032 2089 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2090 }
6224f72b 2091
b24bc095 2092 validate_suid(rsfp);
6224f72b 2093
64ca3a65 2094#ifndef PERL_MICRO
a52eba0e
NC
2095# if defined(SIGCHLD) || defined(SIGCLD)
2096 {
2097# ifndef SIGCHLD
2098# define SIGCHLD SIGCLD
2099# endif
2100 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2101 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2102 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2103 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2104 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2105 }
0b5b802d 2106 }
a52eba0e 2107# endif
64ca3a65 2108#endif
0b5b802d 2109
737c24fc 2110 if (doextract) {
faef540c 2111
f20b2998 2112 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2113 setuid scripts. */
2114 forbid_setid('x', suidscript);
f20b2998 2115 /* Hence you can't get here if suidscript is true */
faef540c 2116
95670bde
NC
2117 linestr_sv = newSV_type(SVt_PV);
2118 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2119 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2120 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2121 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2122 }
f4c556ac 2123 }
6224f72b 2124
ea726b52 2125 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2126 CvUNIQUE_on(PL_compcv);
2127
dd2155a4 2128 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2129
dd69841b
BB
2130 PL_isarev = newHV();
2131
0c4f7ff0 2132 boot_core_PerlIO();
6224f72b 2133 boot_core_UNIVERSAL();
e1a479c5 2134 boot_core_mro();
4a5df386 2135 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2136
2137 if (xsinit)
acfe0abc 2138 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2139#ifndef PERL_MICRO
d0d72822 2140#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2141 init_os_extras();
6224f72b 2142#endif
64ca3a65 2143#endif
6224f72b 2144
29209bc5 2145#ifdef USE_SOCKS
1b9c9cf5
DH
2146# ifdef HAS_SOCKS5_INIT
2147 socks5_init(argv[0]);
2148# else
29209bc5 2149 SOCKSinit(argv[0]);
1b9c9cf5 2150# endif
ac27b0f5 2151#endif
29209bc5 2152
6224f72b
GS
2153 init_predump_symbols();
2154 /* init_postdump_symbols not currently designed to be called */
2155 /* more than once (ENV isn't cleared first, for example) */
2156 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2157 if (!PL_do_undump)
6224f72b
GS
2158 init_postdump_symbols(argc,argv,env);
2159
27da23d5
JH
2160 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2161 * or explicitly in some platforms.
085a54d9 2162 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2163 * look like the user wants to use UTF-8. */
a0fd4948 2164#if defined(__SYMBIAN32__)
27da23d5
JH
2165 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2166#endif
e27b5b51 2167# ifndef PERL_IS_MINIPERL
06e66572
JH
2168 if (PL_unicode) {
2169 /* Requires init_predump_symbols(). */
a05d7ebb 2170 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2171 IO* io;
2172 PerlIO* fp;
2173 SV* sv;
2174
a05d7ebb 2175 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2176 * and the default open disciplines. */
a05d7ebb
JH
2177 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2178 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2179 (fp = IoIFP(io)))
2180 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2181 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2182 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2183 (fp = IoOFP(io)))
2184 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2185 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2186 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2187 (fp = IoOFP(io)))
2188 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2189 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2190 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2191 SVt_PV)))) {
a05d7ebb
JH
2192 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2193 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2194 if (in) {
2195 if (out)
76f68e9b 2196 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2197 else
76f68e9b 2198 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2199 }
2200 else if (out)
76f68e9b 2201 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2202 SvSETMAGIC(sv);
2203 }
b310b053
JH
2204 }
2205 }
e27b5b51 2206#endif
b310b053 2207
c7030b81
NC
2208 {
2209 const char *s;
4ffa73a3
JH
2210 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2211 if (strEQ(s, "unsafe"))
2212 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2213 else if (strEQ(s, "safe"))
2214 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2215 else
2216 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2217 }
c7030b81 2218 }
4ffa73a3 2219
81d86705 2220#ifdef PERL_MAD
c7030b81
NC
2221 {
2222 const char *s;
81d86705
NC
2223 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2224 PL_madskills = 1;
2225 PL_minus_c = 1;
2226 if (!s || !s[0])
2227 PL_xmlfp = PerlIO_stdout();
2228 else {
2229 PL_xmlfp = PerlIO_open(s, "w");
2230 if (!PL_xmlfp)
2231 Perl_croak(aTHX_ "Can't open %s", s);
2232 }
1a9a51d4 2233 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2234 }
c7030b81
NC
2235 }
2236
2237 {
2238 const char *s;
81d86705
NC
2239 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2240 PL_madskills = atoi(s);
1a9a51d4 2241 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2242 }
c7030b81 2243 }
81d86705
NC
2244#endif
2245
87606032 2246 lex_start(linestr_sv, rsfp, lex_start_flags);
95670bde
NC
2247 if(linestr_sv)
2248 SvREFCNT_dec(linestr_sv);
2249
219f7226 2250 PL_subname = newSVpvs("main");
6224f72b 2251
5486870f
DM
2252 if (add_read_e_script)
2253 filter_add(read_e_script, NULL);
2254
6224f72b
GS
2255 /* now parse the script */
2256
93189314 2257 SETERRNO(0,SS_NORMAL);
28ac2b49 2258 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2259 if (PL_minus_c)
cea2e8a9 2260 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2261 else {
cea2e8a9 2262 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2263 PL_origfilename);
6224f72b
GS
2264 }
2265 }
57843af0 2266 CopLINE_set(PL_curcop, 0);
03d9f026 2267 SET_CURSTASH(PL_defstash);
3280af22
NIS
2268 if (PL_e_script) {
2269 SvREFCNT_dec(PL_e_script);
a0714e2c 2270 PL_e_script = NULL;
6224f72b
GS
2271 }
2272
3280af22 2273 if (PL_do_undump)
6224f72b
GS
2274 my_unexec();
2275
57843af0
GS
2276 if (isWARN_ONCE) {
2277 SAVECOPFILE(PL_curcop);
2278 SAVECOPLINE(PL_curcop);
3280af22 2279 gv_check(PL_defstash);
57843af0 2280 }
6224f72b
GS
2281
2282 LEAVE;
2283 FREETMPS;
2284
2285#ifdef MYMALLOC
f6a607bc
RGS
2286 {
2287 const char *s;
6224f72b
GS
2288 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2289 dump_mstats("after compilation:");
f6a607bc 2290 }
6224f72b
GS
2291#endif
2292
2293 ENTER;
febb3a6d 2294 PL_restartjmpenv = NULL;
3280af22 2295 PL_restartop = 0;
312caa8e 2296 return NULL;
6224f72b
GS
2297}
2298
954c1994
GS
2299/*
2300=for apidoc perl_run
2301
2302Tells a Perl interpreter to run. See L<perlembed>.
2303
2304=cut
2305*/
2306
6224f72b 2307int
0cb96387 2308perl_run(pTHXx)
6224f72b 2309{
97aff369 2310 dVAR;
6224f72b 2311 I32 oldscope;
14dd3ad8 2312 int ret = 0;
db36c5a1 2313 dJMPENV;
6224f72b 2314
7918f24d
NC
2315 PERL_ARGS_ASSERT_PERL_RUN;
2316#ifndef MULTIPLICITY
ed6c66dd 2317 PERL_UNUSED_ARG(my_perl);
7918f24d 2318#endif
9d4ba2ae 2319
3280af22 2320 oldscope = PL_scopestack_ix;
96e176bf
CL
2321#ifdef VMS
2322 VMSISH_HUSHED = 0;
2323#endif
6224f72b 2324
14dd3ad8 2325 JMPENV_PUSH(ret);
6224f72b
GS
2326 switch (ret) {
2327 case 1:
2328 cxstack_ix = -1; /* start context stack again */
312caa8e 2329 goto redo_body;
14dd3ad8 2330 case 0: /* normal completion */
14dd3ad8
GS
2331 redo_body:
2332 run_body(oldscope);
14dd3ad8
GS
2333 /* FALL THROUGH */
2334 case 2: /* my_exit() */
3280af22 2335 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2336 LEAVE;
2337 FREETMPS;
03d9f026 2338 SET_CURSTASH(PL_defstash);
3a1ee7e8 2339 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2340 PL_endav && !PL_minus_c) {
ca7b837b 2341 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2342 call_list(oldscope, PL_endav);
9ebf26ad 2343 }
6224f72b
GS
2344#ifdef MYMALLOC
2345 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2346 dump_mstats("after execution: ");
2347#endif
37038d91 2348 ret = STATUS_EXIT;
14dd3ad8 2349 break;
6224f72b 2350 case 3:
312caa8e
CS
2351 if (PL_restartop) {
2352 POPSTACK_TO(PL_mainstack);
2353 goto redo_body;
6224f72b 2354 }
5637ef5b 2355 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2356 FREETMPS;
14dd3ad8
GS
2357 ret = 1;
2358 break;
6224f72b
GS
2359 }
2360
14dd3ad8
GS
2361 JMPENV_POP;
2362 return ret;
312caa8e
CS
2363}
2364
dd374669 2365STATIC void
14dd3ad8
GS
2366S_run_body(pTHX_ I32 oldscope)
2367{
97aff369 2368 dVAR;
6224f72b 2369 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2370 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2371
3280af22 2372 if (!PL_restartop) {
81d86705
NC
2373#ifdef PERL_MAD
2374 if (PL_xmlfp) {
2375 xmldump_all();
2376 exit(0); /* less likely to core dump than my_exit(0) */
2377 }
2378#endif
cf2782cd 2379#ifdef DEBUGGING
f0e3f042
CS
2380 if (DEBUG_x_TEST || DEBUG_B_TEST)
2381 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2382 if (!DEBUG_q_TEST)
2383 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2384#endif
6224f72b 2385
3280af22 2386 if (PL_minus_c) {
bf49b057 2387 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2388 my_exit(0);
2389 }
3280af22 2390 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2391 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2392 if (PL_initav) {
ca7b837b 2393 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2394 call_list(oldscope, PL_initav);
9ebf26ad 2395 }
f1fac472
NC
2396#ifdef PERL_DEBUG_READONLY_OPS
2397 Perl_pending_Slabs_to_ro(aTHX);
2398#endif
6224f72b
GS
2399 }
2400
2401 /* do it */
2402
ca7b837b 2403 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2404
3280af22 2405 if (PL_restartop) {
febb3a6d 2406 PL_restartjmpenv = NULL;
533c011a 2407 PL_op = PL_restartop;
3280af22 2408 PL_restartop = 0;
cea2e8a9 2409 CALLRUNOPS(aTHX);
6224f72b 2410 }
3280af22
NIS
2411 else if (PL_main_start) {
2412 CvDEPTH(PL_main_cv) = 1;
533c011a 2413 PL_op = PL_main_start;
cea2e8a9 2414 CALLRUNOPS(aTHX);
6224f72b 2415 }
f6b3007c 2416 my_exit(0);
118e2215 2417 assert(0); /* NOTREACHED */
6224f72b
GS
2418}
2419
954c1994 2420/*
ccfc67b7
JH
2421=head1 SV Manipulation Functions
2422
954c1994
GS
2423=for apidoc p||get_sv
2424
64ace3f8
NC
2425Returns the SV of the specified Perl scalar. C<flags> are passed to
2426C<gv_fetchpv>. If C<GV_ADD> is set and the
2427Perl variable does not exist then it will be created. If C<flags> is zero
2428and the variable does not exist then NULL is returned.
954c1994
GS
2429
2430=cut
2431*/
2432
6224f72b 2433SV*
64ace3f8 2434Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2435{
2436 GV *gv;
7918f24d
NC
2437
2438 PERL_ARGS_ASSERT_GET_SV;
2439
64ace3f8 2440 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2441 if (gv)
2442 return GvSV(gv);
a0714e2c 2443 return NULL;
6224f72b
GS
2444}
2445
954c1994 2446/*
ccfc67b7
JH
2447=head1 Array Manipulation Functions
2448
954c1994
GS
2449=for apidoc p||get_av
2450
f0b90de1
SF
2451Returns the AV of the specified Perl global or package array with the given
2452name (so it won't work on lexical variables). C<flags> are passed
2453to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2454Perl variable does not exist then it will be created. If C<flags> is zero
2455and the variable does not exist then NULL is returned.
954c1994 2456
f0b90de1
SF
2457Perl equivalent: C<@{"$name"}>.
2458
954c1994
GS
2459=cut
2460*/
2461
6224f72b 2462AV*
cbfd0a87 2463Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2464{
cbfd0a87 2465 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2466
2467 PERL_ARGS_ASSERT_GET_AV;
2468
cbfd0a87 2469 if (flags)
6224f72b
GS
2470 return GvAVn(gv);
2471 if (gv)
2472 return GvAV(gv);
7d49f689 2473 return NULL;
6224f72b
GS
2474}
2475
954c1994 2476/*
ccfc67b7
JH
2477=head1 Hash Manipulation Functions
2478
954c1994
GS
2479=for apidoc p||get_hv
2480
6673a63c
NC
2481Returns the HV of the specified Perl hash. C<flags> are passed to
2482C<gv_fetchpv>. If C<GV_ADD> is set and the
2483Perl variable does not exist then it will be created. If C<flags> is zero
2484and the variable does not exist then NULL is returned.
954c1994
GS
2485
2486=cut
2487*/
2488
6224f72b 2489HV*
6673a63c 2490Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2491{
6673a63c 2492 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2493
2494 PERL_ARGS_ASSERT_GET_HV;
2495
6673a63c 2496 if (flags)
a0d0e21e
LW
2497 return GvHVn(gv);
2498 if (gv)
2499 return GvHV(gv);
5c284bb0 2500 return NULL;
a0d0e21e
LW
2501}
2502
954c1994 2503/*
ccfc67b7
JH
2504=head1 CV Manipulation Functions
2505
780a5241
NC
2506=for apidoc p||get_cvn_flags
2507
2508Returns the CV of the specified Perl subroutine. C<flags> are passed to
2509C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2510exist then it will be declared (which has the same effect as saying
2511C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2512then NULL is returned.
2513
954c1994
GS
2514=for apidoc p||get_cv
2515
780a5241 2516Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2517
2518=cut
2519*/
2520
a0d0e21e 2521CV*
780a5241 2522Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2523{
780a5241 2524 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2525
2526 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2527
334dda80
FC
2528 /* XXX this is probably not what they think they're getting.
2529 * It has the same effect as "sub name;", i.e. just a forward
2530 * declaration! */
780a5241 2531 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2532 return newSTUB(gv,0);
780a5241 2533 }
a0d0e21e 2534 if (gv)
8ebc5c01 2535 return GvCVu(gv);
601f1833 2536 return NULL;
a0d0e21e
LW
2537}
2538
2c67934f
NC
2539/* Nothing in core calls this now, but we can't replace it with a macro and
2540 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2541CV*
2542Perl_get_cv(pTHX_ const char *name, I32 flags)
2543{
7918f24d
NC
2544 PERL_ARGS_ASSERT_GET_CV;
2545
780a5241
NC
2546 return get_cvn_flags(name, strlen(name), flags);
2547}
2548
79072805
LW
2549/* Be sure to refetch the stack pointer after calling these routines. */
2550
954c1994 2551/*
ccfc67b7
JH
2552
2553=head1 Callback Functions
2554
954c1994
GS
2555=for apidoc p||call_argv
2556
f0b90de1
SF
2557Performs a callback to the specified named and package-scoped Perl subroutine
2558with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2559
2560Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2561
2562=cut
2563*/
2564
a0d0e21e 2565I32
8f42b153 2566Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2567
8ac85365
NIS
2568 /* See G_* flags in cop.h */
2569 /* null terminated arg list */
8990e307 2570{
97aff369 2571 dVAR;
a0d0e21e 2572 dSP;
8990e307 2573
7918f24d
NC
2574 PERL_ARGS_ASSERT_CALL_ARGV;
2575
924508f0 2576 PUSHMARK(SP);
a0d0e21e 2577 if (argv) {
8990e307 2578 while (*argv) {
6e449a3a 2579 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2580 argv++;
2581 }
a0d0e21e 2582 PUTBACK;
8990e307 2583 }
864dbfa3 2584 return call_pv(sub_name, flags);
8990e307
LW
2585}
2586
954c1994
GS
2587/*
2588=for apidoc p||call_pv
2589
2590Performs a callback to the specified Perl sub. See L<perlcall>.
2591
2592=cut
2593*/
2594
a0d0e21e 2595I32
864dbfa3 2596Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2597 /* name of the subroutine */
2598 /* See G_* flags in cop.h */
a0d0e21e 2599{
7918f24d
NC
2600 PERL_ARGS_ASSERT_CALL_PV;
2601
0da0e728 2602 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2603}
2604
954c1994
GS
2605/*
2606=for apidoc p||call_method
2607
2608Performs a callback to the specified Perl method. The blessed object must
2609be on the stack. See L<perlcall>.
2610
2611=cut
2612*/
2613
a0d0e21e 2614I32
864dbfa3 2615Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2616 /* name of the subroutine */
2617 /* See G_* flags in cop.h */
a0d0e21e 2618{
46ca9bac 2619 STRLEN len;
7918f24d
NC
2620 PERL_ARGS_ASSERT_CALL_METHOD;
2621
46ca9bac 2622 len = strlen(methname);
2623
2624 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2625 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2626}
2627
2628/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2629/*
2630=for apidoc p||call_sv
2631
2632Performs a callback to the Perl sub whose name is in the SV. See
2633L<perlcall>.
2634
2635=cut
2636*/
2637
a0d0e21e 2638I32
001d637e 2639Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2640 /* See G_* flags in cop.h */
a0d0e21e 2641{
27da23d5 2642 dVAR; dSP;
a0d0e21e 2643 LOGOP myop; /* fake syntax tree node */
968b3946 2644 UNOP method_op;
aa689395 2645 I32 oldmark;
8ea43dc8 2646 VOL I32 retval = 0;
a0d0e21e 2647 I32 oldscope;
54310121 2648 bool oldcatch = CATCH_GET;
6224f72b 2649 int ret;
c4420975 2650 OP* const oldop = PL_op;
db36c5a1 2651 dJMPENV;
1e422769 2652
7918f24d
NC
2653 PERL_ARGS_ASSERT_CALL_SV;
2654
a0d0e21e
LW
2655 if (flags & G_DISCARD) {
2656 ENTER;
2657 SAVETMPS;
2658 }
2f8edad0
NC
2659 if (!(flags & G_WANT)) {
2660 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2661 */
2662 flags |= G_SCALAR;
2663 }
a0d0e21e 2664
aa689395 2665 Zero(&myop, 1, LOGOP);
5f66b61c 2666 myop.op_next = NULL;
f51d4af5 2667 if (!(flags & G_NOARGS))
aa689395 2668 myop.op_flags |= OPf_STACKED;
4f911530 2669 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2670 SAVEOP();
533c011a 2671 PL_op = (OP*)&myop;
aa689395 2672
3280af22
NIS
2673 EXTEND(PL_stack_sp, 1);
2674 *++PL_stack_sp = sv;
aa689395 2675 oldmark = TOPMARK;
3280af22 2676 oldscope = PL_scopestack_ix;
a0d0e21e 2677
3280af22 2678 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2679 /* Handle first BEGIN of -d. */
3280af22 2680 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2681 /* Try harder, since this may have been a sighandler, thus
2682 * curstash may be meaningless. */
ea726b52 2683 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2684 && !(flags & G_NODEBUG))
533c011a 2685 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2686
968b3946
GS
2687 if (flags & G_METHOD) {
2688 Zero(&method_op, 1, UNOP);
2689 method_op.op_next = PL_op;
2690 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2691 method_op.op_type = OP_METHOD;
968b3946 2692 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2693 myop.op_type = OP_ENTERSUB;
f39d0b86 2694 PL_op = (OP*)&method_op;
968b3946
GS
2695 }
2696
312caa8e 2697 if (!(flags & G_EVAL)) {
0cdb2077 2698 CATCH_SET(TRUE);
d6f07c05 2699 CALL_BODY_SUB((OP*)&myop);
312caa8e 2700 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2701 CATCH_SET(oldcatch);
312caa8e
CS
2702 }
2703 else {
d78bda3d 2704 myop.op_other = (OP*)&myop;
3280af22 2705 PL_markstack_ptr--;
edb2152a 2706 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2707 PL_markstack_ptr++;
a0d0e21e 2708
14dd3ad8 2709 JMPENV_PUSH(ret);
edb2152a 2710
6224f72b
GS
2711 switch (ret) {
2712 case 0:
14dd3ad8 2713 redo_body:
d6f07c05 2714 CALL_BODY_SUB((OP*)&myop);
312caa8e 2715 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2716 if (!(flags & G_KEEPERR)) {
ab69dbc2 2717 CLEAR_ERRSV();
8433848b 2718 }
a0d0e21e 2719 break;
6224f72b 2720 case 1:
f86702cc 2721 STATUS_ALL_FAILURE;
a0d0e21e 2722 /* FALL THROUGH */
6224f72b 2723 case 2:
a0d0e21e 2724 /* my_exit() was called */
03d9f026 2725 SET_CURSTASH(PL_defstash);
a0d0e21e 2726 FREETMPS;
14dd3ad8 2727 JMPENV_POP;
f86702cc 2728 my_exit_jump();
118e2215 2729 assert(0); /* NOTREACHED */
6224f72b 2730 case 3:
3280af22 2731 if (PL_restartop) {
febb3a6d 2732 PL_restartjmpenv = NULL;
533c011a 2733 PL_op = PL_restartop;
3280af22 2734 PL_restartop = 0;
312caa8e 2735 goto redo_body;
a0d0e21e 2736 }
3280af22 2737 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2738 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2739 retval = 0;
2740 else {
2741 retval = 1;
3280af22 2742 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2743 }
312caa8e 2744 break;
a0d0e21e 2745 }
a0d0e21e 2746
edb2152a
NC
2747 if (PL_scopestack_ix > oldscope)
2748 delete_eval_scope();
14dd3ad8 2749 JMPENV_POP;
a0d0e21e 2750 }
1e422769 2751
a0d0e21e 2752 if (flags & G_DISCARD) {
3280af22 2753 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2754 retval = 0;
2755 FREETMPS;
2756 LEAVE;
2757 }
533c011a 2758 PL_op = oldop;
a0d0e21e
LW
2759 return retval;
2760}
2761
6e72f9df 2762/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2763
954c1994
GS
2764/*
2765=for apidoc p||eval_sv
2766
be064c4a
DM
2767Tells Perl to C<eval> the string in the SV. It supports the same flags
2768as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2769
2770=cut
2771*/
2772
a0d0e21e 2773I32
864dbfa3 2774Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2775
8ac85365 2776 /* See G_* flags in cop.h */
a0d0e21e 2777{
97aff369 2778 dVAR;
924508f0 2779 dSP;
a0d0e21e 2780 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2781 VOL I32 oldmark = SP - PL_stack_base;
2782 VOL I32 retval = 0;
6224f72b 2783 int ret;
c4420975 2784 OP* const oldop = PL_op;
db36c5a1 2785 dJMPENV;
84902520 2786
7918f24d
NC
2787 PERL_ARGS_ASSERT_EVAL_SV;
2788
4633a7c4
LW
2789 if (flags & G_DISCARD) {
2790 ENTER;
2791 SAVETMPS;
2792 }
2793
462e5cf6 2794 SAVEOP();
533c011a
NIS
2795 PL_op = (OP*)&myop;
2796 Zero(PL_op, 1, UNOP);
3280af22
NIS
2797 EXTEND(PL_stack_sp, 1);
2798 *++PL_stack_sp = sv;
79072805 2799
4633a7c4
LW
2800 if (!(flags & G_NOARGS))
2801 myop.op_flags = OPf_STACKED;
5f66b61c 2802 myop.op_next = NULL;
6e72f9df 2803 myop.op_type = OP_ENTEREVAL;
4f911530 2804 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2805 if (flags & G_KEEPERR)
2806 myop.op_flags |= OPf_SPECIAL;
d24ca0c5
DM
2807 if (PL_reg_state.re_reparsing)
2808 myop.op_private = OPpEVAL_COPHH;
4633a7c4 2809
dedbcade
DM
2810 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2811 * before a PUSHEVAL, which corrupts the stack after a croak */
2812 TAINT_PROPER("eval_sv()");
2813
14dd3ad8 2814 JMPENV_PUSH(ret);
6224f72b
GS
2815 switch (ret) {
2816 case 0:
14dd3ad8 2817 redo_body:
2ba65d5f
DM
2818 if (PL_op == (OP*)(&myop)) {
2819 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2820 if (!PL_op)
2821 goto fail; /* failed in compilation */
2822 }
4aca2f62 2823 CALLRUNOPS(aTHX);
312caa8e 2824 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2825 if (!(flags & G_KEEPERR)) {
ab69dbc2 2826 CLEAR_ERRSV();
8433848b 2827 }
4633a7c4 2828 break;
6224f72b 2829 case 1:
f86702cc 2830 STATUS_ALL_FAILURE;
4633a7c4 2831 /* FALL THROUGH */
6224f72b 2832 case 2:
4633a7c4 2833 /* my_exit() was called */
03d9f026 2834 SET_CURSTASH(PL_defstash);
4633a7c4 2835 FREETMPS;
14dd3ad8 2836 JMPENV_POP;
f86702cc 2837 my_exit_jump();
118e2215 2838 assert(0); /* NOTREACHED */
6224f72b 2839 case 3:
3280af22 2840 if (PL_restartop) {
febb3a6d 2841 PL_restartjmpenv = NULL;
533c011a 2842 PL_op = PL_restartop;
3280af22 2843 PL_restartop = 0;
312caa8e 2844 goto redo_body;
4633a7c4 2845 }
4aca2f62 2846 fail:
3280af22 2847 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2848 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2849 retval = 0;
2850 else {
2851 retval = 1;
3280af22 2852 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2853 }
312caa8e 2854 break;
4633a7c4
LW
2855 }
2856
14dd3ad8 2857 JMPENV_POP;
4633a7c4 2858 if (flags & G_DISCARD) {
3280af22 2859 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2860 retval = 0;
2861 FREETMPS;
2862 LEAVE;
2863 }
533c011a 2864 PL_op = oldop;
4633a7c4
LW
2865 return retval;
2866}
2867
954c1994
GS
2868/*
2869=for apidoc p||eval_pv
2870
2871Tells Perl to C<eval> the given string and return an SV* result.
2872
2873=cut
2874*/
2875
137443ea 2876SV*
864dbfa3 2877Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2878{
97aff369 2879 dVAR;
137443ea
PP
2880 dSP;
2881 SV* sv = newSVpv(p, 0);
2882
7918f24d
NC
2883 PERL_ARGS_ASSERT_EVAL_PV;
2884
864dbfa3 2885 eval_sv(sv, G_SCALAR);
137443ea
PP
2886 SvREFCNT_dec(sv);
2887
2888 SPAGAIN;
2889 sv = POPs;
2890 PUTBACK;
2891
2d8e6c8d 2892 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2893 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2894 }
137443ea
PP
2895
2896 return sv;
2897}
2898
4633a7c4
LW
2899/* Require a module. */
2900
954c1994 2901/*
ccfc67b7
JH
2902=head1 Embedding Functions
2903
954c1994
GS
2904=for apidoc p||require_pv
2905
7d3fb230
BS
2906Tells Perl to C<require> the file named by the string argument. It is
2907analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2908implemented that way; consider using load_module instead.
954c1994 2909
7d3fb230 2910=cut */
954c1994 2911
4633a7c4 2912void
864dbfa3 2913Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2914{
97aff369 2915 dVAR;
d3acc0f7 2916 dSP;
97aff369 2917 SV* sv;
7918f24d
NC
2918
2919 PERL_ARGS_ASSERT_REQUIRE_PV;
2920
e788e7d3 2921 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2922 PUTBACK;
be41e5d9
NC
2923 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2924 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2925 SPAGAIN;
2926 POPSTACK;
79072805
LW
2927}
2928
76e3520e 2929STATIC void
b6f82619 2930S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2931{
ab821d7f 2932 /* This message really ought to be max 23 lines.
75c72d73 2933 * Removed -h because the user already knows that option. Others? */
fb73857a 2934
1566c39d
NC
2935 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2936 minimum of 509 character string literals. */
27da23d5 2937 static const char * const usage_msg[] = {
1566c39d
NC
2938" -0[octal] specify record separator (\\0, if no argument)\n"
2939" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2940" -C[number/list] enables the listed Unicode features\n"
2941" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2942" -d[:debugger] run program under debugger\n"
2943" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2944" -e program one line of program (several -e's allowed, omit programfile)\n"
2945" -E program like -e, but enables all optional features\n"
2946" -f don't do $sitelib/sitecustomize.pl at startup\n"
2947" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2948" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2949" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2950" -l[octal] enable line ending processing, specifies line terminator\n"
2951" -[mM][-]module execute \"use/no module...\" before executing program\n"
2952" -n assume \"while (<>) { ... }\" loop around program\n"
2953" -p assume loop like -n but print line also, like sed\n"
2954" -s enable rudimentary parsing for switches after programfile\n"
2955" -S look for programfile using PATH environment variable\n",
2956" -t enable tainting warnings\n"
2957" -T enable tainting checks\n"
2958" -u dump core after parsing program\n"
2959" -U allow unsafe operations\n"
2960" -v print version, patchlevel and license\n"
2961" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2962" -w enable many useful warnings\n"
1566c39d
NC
2963" -W enable all warnings\n"
2964" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2965" -X disable all warnings\n"
2966" \n"
2967"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2968NULL
2969};
27da23d5 2970 const char * const *p = usage_msg;
1566c39d 2971 PerlIO *out = PerlIO_stdout();
fb73857a 2972
1566c39d
NC
2973 PerlIO_printf(out,
2974 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2975 PL_origargv[0]);
fb73857a 2976 while (*p)
1566c39d 2977 PerlIO_puts(out, *p++);
b6f82619 2978 my_exit(0);
4633a7c4
LW
2979}
2980
b4ab917c
DM
2981/* convert a string of -D options (or digits) into an int.
2982 * sets *s to point to the char after the options */
2983
2984#ifdef DEBUGGING
2985int
e1ec3a88 2986Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2987{
27da23d5 2988 static const char * const usage_msgd[] = {
651b8f1a
NC
2989 " Debugging flag values: (see also -d)\n"
2990 " p Tokenizing and parsing (with v, displays parse stack)\n"
2991 " s Stack snapshots (with v, displays all stacks)\n"
2992 " l Context (loop) stack processing\n"
2993 " t Trace execution\n"
2994 " o Method and overloading resolution\n",
2995 " c String/numeric conversions\n"
2996 " P Print profiling info, source file input state\n"
2997 " m Memory and SV allocation\n"
2998 " f Format processing\n"
2999 " r Regular expression parsing and execution\n"
3000 " x Syntax tree dump\n",
3001 " u Tainting checks\n"
3002 " H Hash dump -- usurps values()\n"
3003 " X Scratchpad allocation\n"
3004 " D Cleaning up\n"
56967202 3005 " S Op slab allocation\n"
651b8f1a
NC
3006 " T Tokenising\n"
3007 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3008 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3009 " v Verbose: use in conjunction with other flags\n"
3010 " C Copy On Write\n"
3011 " A Consistency checks on internal structures\n"
3012 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3013 " M trace smart match resolution\n"
3014 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3015 NULL
3016 };
b4ab917c 3017 int i = 0;
7918f24d
NC
3018
3019 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3020
b4ab917c
DM
3021 if (isALPHA(**s)) {
3022 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3023 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
3024
3025 for (; isALNUM(**s); (*s)++) {
c4420975 3026 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3027 if (d)
3028 i |= 1 << (d - debopts);
3029 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3030 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3031 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3032 }
3033 }
e6e64d9b 3034 else if (isDIGIT(**s)) {
b4ab917c
DM
3035 i = atoi(*s);
3036 for (; isALNUM(**s); (*s)++) ;
3037 }
ddcf8bc1 3038 else if (givehelp) {
06e869a4 3039 const char *const *p = usage_msgd;
651b8f1a 3040 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3041 }
b4ab917c
DM
3042# ifdef EBCDIC
3043 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3044 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3045 "-Dp not implemented on this platform\n");
3046# endif
3047 return i;
3048}
3049#endif
3050
79072805
LW
3051/* This routine handles any switches that can be given during run */
3052
c7030b81
NC
3053const char *
3054Perl_moreswitches(pTHX_ const char *s)
79072805 3055{
27da23d5 3056 dVAR;
84c133a0 3057 UV rschar;
0544e6df 3058 const char option = *s; /* used to remember option in -m/-M code */
79072805 3059
7918f24d
NC
3060 PERL_ARGS_ASSERT_MORESWITCHES;
3061
79072805
LW
3062 switch (*s) {
3063 case '0':
a863c7d1 3064 {
f2095865 3065 I32 flags = 0;
a3b680e6 3066 STRLEN numlen;
f2095865
JH
3067
3068 SvREFCNT_dec(PL_rs);
3069 if (s[1] == 'x' && s[2]) {
a3b680e6 3070 const char *e = s+=2;
f2095865
JH
3071 U8 *tmps;
3072
a3b680e6
AL
3073 while (*e)
3074 e++;
f2095865
JH
3075 numlen = e - s;
3076 flags = PERL_SCAN_SILENT_ILLDIGIT;
3077 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3078 if (s + numlen < e) {
3079 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3080 numlen = 0;
3081 s--;
3082 }
396482e1 3083 PL_rs = newSVpvs("");
c5661c80 3084 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3085 tmps = (U8*)SvPVX(PL_rs);
3086 uvchr_to_utf8(tmps, rschar);
3087 SvCUR_set(PL_rs, UNISKIP(rschar));
3088 SvUTF8_on(PL_rs);
3089 }
3090 else {
3091 numlen = 4;
3092 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3093 if (rschar & ~((U8)~0))
3094 PL_rs = &PL_sv_undef;
3095 else if (!rschar && numlen >= 2)
396482e1 3096 PL_rs = newSVpvs("");
f2095865
JH
3097 else {
3098 char ch = (char)rschar;
3099 PL_rs = newSVpvn(&ch, 1);
3100 }
3101 }
64ace3f8 3102 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3103 return s + numlen;
a863c7d1 3104 }
46487f74 3105 case 'C':
a05d7ebb 3106 s++;
dd374669 3107 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3108 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3109 PL_utf8cache = -1;
46487f74 3110 return s;
2304df62 3111 case 'F':
3280af22 3112 PL_minus_F = TRUE;
ebce5377
RGS
3113 PL_splitstr = ++s;
3114 while (*s && !isSPACE(*s)) ++s;
e49e380e 3115 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3116 return s;
79072805 3117 case 'a':
3280af22 3118 PL_minus_a = TRUE;
79072805
LW
3119 s++;
3120 return s;
3121 case 'c':
3280af22 3122 PL_minus_c = TRUE;
79072805
LW
3123 s++;
3124 return s;
3125 case 'd':
f20b2998 3126 forbid_setid('d', FALSE);
4633a7c4 3127 s++;
2cbb2ee1
RGS
3128
3129 /* -dt indicates to the debugger that threads will be used */
3130 if (*s == 't' && !isALNUM(s[1])) {
3131 ++s;
3132 my_setenv("PERL5DB_THREADED", "1");
3133 }
3134
70c94a19
RR
3135 /* The following permits -d:Mod to accepts arguments following an =
3136 in the fashion that -MSome::Mod does. */
3137 if (*s == ':' || *s == '=') {
b19934fb
NC
3138 const char *start;
3139 const char *end;
3140 SV *sv;
3141
3142 if (*++s == '-') {
3143 ++s;
3144 sv = newSVpvs("no Devel::");
3145 } else {
3146 sv = newSVpvs("use Devel::");
3147 }
3148
3149 start = s;
3150 end = s + strlen(s);
f85893a1 3151
b19934fb 3152 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3153 while(isALNUM(*s) || *s==':') ++s;
3154 if (*s != '=')
f85893a1 3155 sv_catpvn(sv, start, end - start);
70c94a19
RR
3156 else {
3157 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3158 /* Don't use NUL as q// delimiter here, this string goes in the
3159 * environment. */
3160 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3161 }
f85893a1 3162 s = end;
184f32ec 3163 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3164 SvREFCNT_dec(sv);
4633a7c4 3165 }
ed094faf 3166 if (!PL_perldb) {
3280af22 3167 PL_perldb = PERLDB_ALL;
a0d0e21e 3168 init_debugger();
ed094faf 3169 }
79072805
LW
3170 return s;
3171 case 'D':
0453d815 3172 {
79072805 3173#ifdef DEBUGGING
f20b2998 3174 forbid_setid('D', FALSE);
b4ab917c 3175 s++;
dd374669 3176 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3177#else /* !DEBUGGING */
0453d815 3178 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3179 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3180 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3181 for (s++; isALNUM(*s); s++) ;
79072805 3182#endif
79072805 3183 return s;
0453d815 3184 }
4633a7c4 3185 case 'h':
b6f82619 3186 usage();
79072805 3187 case 'i':
43c5f42d 3188 Safefree(PL_inplace);
c030f24b
GH
3189#if defined(__CYGWIN__) /* do backup extension automagically */
3190 if (*(s+1) == '\0') {
c86a4f2e 3191 PL_inplace = savepvs(".bak");
c030f24b
GH
3192 return s+1;
3193 }
3194#endif /* __CYGWIN__ */
5ef5d758 3195 {
d4c19fe8 3196 const char * const start = ++s;
5ef5d758
NC
3197 while (*s && !isSPACE(*s))
3198 ++s;
3199
3200 PL_inplace = savepvn(start, s - start);
3201 }
7b8d334a 3202 if (*s) {
5ef5d758 3203 ++s;
7b8d334a 3204 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3205 s++;
7b8d334a 3206 }
fb73857a 3207 return s;
4e49a025 3208 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3209 forbid_setid('I', FALSE);
fb73857a
PP
3210 ++s;
3211 while (*s && isSPACE(*s))
3212 ++s;
3213 if (*s) {
c7030b81 3214 const char *e, *p;
0df16ed7
GS
3215 p = s;
3216 /* ignore trailing spaces (possibly followed by other switches) */
3217 do {
3218 for (e = p; *e && !isSPACE(*e); e++) ;
3219 p = e;
3220 while (isSPACE(*p))
3221 p++;
3222 } while (*p && *p != '-');
55b4bc1c 3223 incpush(s, e-s,
e28f3139 3224 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3225 s = p;
3226 if (*s == '-')
3227 s++;
79072805
LW
3228 }
3229 else
a67e862a 3230 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3231 return s;
79072805 3232 case 'l':
3280af22 3233 PL_minus_l = TRUE;
79072805 3234 s++;
7889fe52
NIS
3235 if (PL_ors_sv) {
3236 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3237 PL_ors_sv = NULL;
7889fe52 3238 }
79072805 3239 if (isDIGIT(*s)) {
53305cf1 3240 I32 flags = 0;
a3b680e6 3241 STRLEN numlen;
396482e1 3242 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3243 numlen = 3 + (*s == '0');
3244 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3245 s += numlen;
3246 }
3247 else {
8bfdd7d9 3248 if (RsPARA(PL_rs)) {
396482e1 3249 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3250 }
3251 else {
8bfdd7d9 3252 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3253 }
79072805
LW
3254 }
3255 return s;
1a30305b 3256 case 'M':
f20b2998 3257 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3258 /* FALL THROUGH */
3259 case 'm':
f20b2998 3260 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3261 if (*++s) {
c7030b81 3262 const char *start;
b64cb68c 3263 const char *end;
11343788 3264 SV *sv;
e1ec3a88 3265 const char *use = "use ";
0544e6df 3266 bool colon = FALSE;
a5f75d66 3267 /* -M-foo == 'no foo' */
d0043bd1
NC
3268 /* Leading space on " no " is deliberate, to make both
3269 possibilities the same length. */
3270 if (*s == '-') { use = " no "; ++s; }
3271 sv = newSVpvn(use,4);
a5f75d66 3272 start = s;
1a30305b 3273 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3274 while(isALNUM(*s) || *s==':') {
3275 if( *s++ == ':' ) {
3276 if( *s == ':' )
3277 s++;
3278 else
3279 colon = TRUE;
3280 }
3281 }
3282 if (s == start)
3283 Perl_croak(aTHX_ "Module name required with -%c option",
3284 option);
3285 if (colon)
3286 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3287 "contains single ':'",
63da6837 3288 (int)(s - start), start, option);
b64cb68c 3289 end = s + strlen(s);
c07a80fd 3290 if (*s != '=') {
b64cb68c 3291 sv_catpvn(sv, start, end - start);
0544e6df 3292 if (option == 'm') {
c07a80fd 3293 if (*s != '\0')
cea2e8a9 3294 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3295 sv_catpvs( sv, " ()");
c07a80fd
PP
3296 }
3297 } else {
11343788 3298 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3299 /* Use NUL as q''-delimiter. */
3300 sv_catpvs(sv, " split(/,/,q\0");
3301 ++s;
3302 sv_catpvn(sv, s, end - s);
396482e1 3303 sv_catpvs(sv, "\0)");
c07a80fd 3304 }
b64cb68c 3305 s = end;
29a861e7 3306 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3307 }
3308 else
0544e6df 3309 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3310 return s;
79072805 3311 case 'n':
3280af22 3312 PL_minus_n = TRUE;
79072805
LW
3313 s++;
3314 return s;
3315 case 'p':
3280af22 3316 PL_minus_p = TRUE;
79072805
LW
3317 s++;
3318 return s;
3319 case 's':
f20b2998 3320 forbid_setid('s', FALSE);
3280af22 3321 PL_doswitches = TRUE;
79072805
LW
3322 s++;
3323 return s;
6537fe72 3324 case 't':
27a6968b 3325 case 'T':
6537fe72 3326 if (!PL_tainting)
27a6968b 3327 TOO_LATE_FOR(*s);
6537fe72 3328 s++;
463ee0b2 3329 return s;
79072805 3330 case 'u':
3280af22 3331 PL_do_undump = TRUE;
79072805
LW
3332 s++;
3333 return s;
3334 case 'U':
3280af22 3335 PL_unsafe = TRUE;
79072805
LW
3336 s++;
3337 return s;
3338 case 'v':
c4bc78d9
NC
3339 minus_v();
3340 case 'w':
3341 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3342 PL_dowarn |= G_WARN_ON;
3343 }
3344 s++;
3345 return s;
3346 case 'W':
3347 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3348 if (!specialWARN(PL_compiling.cop_warnings))
3349 PerlMemShared_free(PL_compiling.cop_warnings);
3350 PL_compiling.cop_warnings = pWARN_ALL ;
3351 s++;
3352 return s;
3353 case 'X':
3354 PL_dowarn = G_WARN_ALL_OFF;
3355 if (!specialWARN(PL_compiling.cop_warnings))
3356 PerlMemShared_free(PL_compiling.cop_warnings);
3357 PL_compiling.cop_warnings = pWARN_NONE ;
3358 s++;
3359 return s;
3360 case '*':
3361 case ' ':
3362 while( *s == ' ' )
3363 ++s;
3364 if (s[0] == '-') /* Additional switches on #! line. */
3365 return s+1;
3366 break;
3367 case '-':
3368 case 0:
3369#if defined(WIN32) || !defined(PERL_STRICT_CR)
3370 case '\r':
3371#endif
3372 case '\n':
3373 case '\t':
3374 break;
3375#ifdef ALTERNATE_SHEBANG
3376 case 'S': /* OS/2 needs -S on "extproc" line. */
3377 break;
3378#endif
4bb78d63
CB
3379 case 'e': case 'f': case 'x': case 'E':
3380#ifndef ALTERNATE_SHEBANG
3381 case 'S':
3382#endif
3383 case 'V':
c4bc78d9 3384 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3385 default:
3386 Perl_croak(aTHX_
3387 "Unrecognized switch: -%.1s (-h will show valid options)",s
3388 );
c4bc78d9
NC
3389 }
3390 return NULL;
3391}
3392
3393
3394STATIC void
3395S_minus_v(pTHX)
3396{
d7aa5382 3397 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3398 upg_version(PL_patchlevel, TRUE);
8e9464f1 3399#if !defined(DGUX)
46807d8e
YO
3400 {
3401 SV* level= vstringify(PL_patchlevel);
3402#ifdef PERL_PATCHNUM
23d483e2
NC
3403# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3404 SV *num = newSVpvs(PERL_PATCHNUM "*");
3405# else
3406 SV *num = newSVpvs(PERL_PATCHNUM);
3407# endif
46807d8e
YO
3408
3409 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3410 SvREFCNT_dec(level);
3411 level= num;
3412 } else {
d0a9311f 3413 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3414 SvREFCNT_dec(num);
3415 }
3416 #endif
3417 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3418 "\nThis is perl " STRINGIFY(PERL_REVISION)
3419 ", version " STRINGIFY(PERL_VERSION)
3420 ", subversion " STRINGIFY(PERL_SUBVERSION)
3421 " (%"SVf") built for " ARCHNAME, level
3422 );
46807d8e
YO
3423 SvREFCNT_dec(level);
3424 }
8e9464f1
JH
3425#else /* DGUX */
3426/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3427 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3428 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3429 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3430 PerlIO_printf(PerlIO_stdout(),
3431 Perl_form(aTHX_ " built under %s at %s %s\n",
3432 OSNAME, __DATE__, __TIME__));
3433 PerlIO_printf(PerlIO_stdout(),
3434 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3435 OSVERS));
8e9464f1 3436#endif /* !DGUX */
fb73857a
PP
3437#if defined(LOCAL_PATCH_COUNT)
3438 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3439 PerlIO_printf(PerlIO_stdout(),
3440 "\n(with %d registered patch%s, "
3441 "see perl -V for more detail)",
bb7a0f54 3442 LOCAL_PATCH_COUNT,
b0e47665 3443 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3444#endif
1a30305b 3445
b0e47665 3446 PerlIO_printf(PerlIO_stdout(),
fdfb76e4 3447 "\n\nCopyright 1987-2012, Larry Wall\n");
79072805 3448#ifdef MSDOS
b0e47665
GS
3449 PerlIO_printf(PerlIO_stdout(),
3450 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3451#endif
3452#ifdef DJGPP
b0e47665
GS
3453 PerlIO_printf(PerlIO_stdout(),
3454 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3455 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3456#endif
79072805 3457#ifdef OS2
b0e47665
GS
3458 PerlIO_printf(PerlIO_stdout(),
3459 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3460 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3461#endif
79072805 3462#ifdef atarist
b0e47665
GS
3463 PerlIO_printf(PerlIO_stdout(),
3464 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3465#endif
a3f9223b 3466#ifdef __BEOS__
b0e47665
GS
3467 PerlIO_printf(PerlIO_stdout(),
3468 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3469#endif
1d84e8df 3470#ifdef MPE
b0e47665 3471 PerlIO_printf(PerlIO_stdout(),
e583a879 3472 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3473#endif
9d116dd7 3474#ifdef OEMVS
b0e47665
GS
3475 PerlIO_printf(PerlIO_stdout(),
3476 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3477#endif
495c5fdc 3478#ifdef __VOS__
b0e47665 3479 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3480 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3481#endif
092bebab 3482#ifdef __OPEN_VM
b0e47665
GS
3483 PerlIO_printf(PerlIO_stdout(),
3484 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3485#endif
a1a0e61e 3486#ifdef POSIX_BC
b0e47665
GS
3487 PerlIO_printf(PerlIO_stdout(),
3488 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3489#endif
f83d2536 3490#ifdef EPOC
b0e47665 3491 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3492 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3493#endif
e1caacb4 3494#ifdef UNDER_CE
b475b3e6
JH
3495 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3496 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3497 wce_hitreturn();
3498#endif
a0fd4948 3499#ifdef __SYMBIAN32__
27da23d5
JH
3500 PerlIO_printf(PerlIO_stdout(),
3501 "Symbian port by Nokia, 2004-2005\n");
3502#endif
baed7233
DL
3503#ifdef BINARY_BUILD_NOTICE
3504 BINARY_BUILD_NOTICE;
3505#endif
b0e47665
GS
3506 PerlIO_printf(PerlIO_stdout(),
3507 "\n\
79072805 3508Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3509GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3510Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3511this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3512Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3513 my_exit(0);
79072805
LW
3514}
3515
3516/* compliments of Tom Christiansen */
3517
3518/* unexec() can be found in the Gnu emacs distribution */
ee580363 3519/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805 3520
25bbd826
CB
3521#ifdef VMS
3522#include <lib$routines.h>