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Remove all the never used parameters from the macro validate_suid()
[perl5.git] / perl.c
CommitLineData
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
43c0c913
NC
27#ifdef PERL_IS_MINIPERL
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);
016af4f1
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);
1fcf4c12 310#endif
e5dd39fc 311#ifdef USE_REENTRANT_API
59bd0823 312 Perl_reentrant_init(aTHX);
e5dd39fc 313#endif
3d47000e
AB
314
315 /* Note that strtab is a rather special HV. Assumptions are made
316 about not iterating on it, and not adding tie magic to it.
317 It is properly deallocated in perl_destruct() */
318 PL_strtab = newHV();
319
3d47000e
AB
320 HvSHAREKEYS_off(PL_strtab); /* mandatory */
321 hv_ksplit(PL_strtab, 512);
322
0631ea03
AB
323#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
324 _dyld_lookup_and_bind
325 ("__environ", (unsigned long *) &environ_pointer, NULL);
326#endif /* environ */
327
2f42fcb0
JH
328#ifndef PERL_MICRO
329# ifdef USE_ENVIRON_ARRAY
0631ea03 330 PL_origenviron = environ;
2f42fcb0 331# endif
0631ea03
AB
332#endif
333
5311654c 334 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 335 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
336 * BeOS has those, but returns the wrong value.
337 * The HZ if not originally defined has been by now
338 * been defined as CLK_TCK, if available. */
dbc1d986 339#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
340 PL_clocktick = sysconf(_SC_CLK_TCK);
341 if (PL_clocktick <= 0)
342#endif
343 PL_clocktick = HZ;
344
081fc587
AB
345 PL_stashcache = newHV();
346
e8e3635e 347 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 348 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 349
27da23d5
JH
350#ifdef HAS_MMAP
351 if (!PL_mmap_page_size) {
352#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
353 {
354 SETERRNO(0, SS_NORMAL);
355# ifdef _SC_PAGESIZE
356 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
357# else
358 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
359# endif
360 if ((long) PL_mmap_page_size < 0) {
361 if (errno) {
44f8325f 362 SV * const error = ERRSV;
d4c19fe8 363 SvUPGRADE(error, SVt_PV);
0510663f 364 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
365 }
366 else
367 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
368 }
369 }
370#else
371# ifdef HAS_GETPAGESIZE
372 PL_mmap_page_size = getpagesize();
373# else
374# if defined(I_SYS_PARAM) && defined(PAGESIZE)
375 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
376# endif
377# endif
378#endif
379 if (PL_mmap_page_size <= 0)
380 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
381 (IV) PL_mmap_page_size);
382 }
383#endif /* HAS_MMAP */
384
385#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
386 PL_timesbase.tms_utime = 0;
387 PL_timesbase.tms_stime = 0;
388 PL_timesbase.tms_cutime = 0;
389 PL_timesbase.tms_cstime = 0;
390#endif
391
7d113631
NC
392 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
393
a3e6e81e 394 PL_registered_mros = newHV();
9e169432
NC
395 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
396 HvMAX(PL_registered_mros) = 0;
a3e6e81e 397
8990e307 398 ENTER;
79072805
LW
399}
400
954c1994 401/*
62375a60
NIS
402=for apidoc nothreadhook
403
404Stub that provides thread hook for perl_destruct when there are
405no threads.
406
407=cut
408*/
409
410int
4e9e3734 411Perl_nothreadhook(pTHX)
62375a60 412{
96a5add6 413 PERL_UNUSED_CONTEXT;
62375a60
NIS
414 return 0;
415}
416
41e4abd8
NC
417#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
418void
419Perl_dump_sv_child(pTHX_ SV *sv)
420{
421 ssize_t got;
bf357333
NC
422 const int sock = PL_dumper_fd;
423 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
424 union control_un control;
425 struct msghdr msg;
808ad2d0 426 struct iovec vec[2];
bf357333 427 struct cmsghdr *cmptr;
808ad2d0
NC
428 int returned_errno;
429 unsigned char buffer[256];
41e4abd8 430
7918f24d
NC
431 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
432
bf357333 433 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
434 return;
435
436 PerlIO_flush(Perl_debug_log);
437
bf357333
NC
438 /* All these shenanigans are to pass a file descriptor over to our child for
439 it to dump out to. We can't let it hold open the file descriptor when it
440 forks, as the file descriptor it will dump to can turn out to be one end
441 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 442 be open, the wait would be forever.) */
bf357333
NC
443
444 msg.msg_control = control.control;
445 msg.msg_controllen = sizeof(control.control);
446 /* We're a connected socket so we don't need a destination */
447 msg.msg_name = NULL;
448 msg.msg_namelen = 0;
449 msg.msg_iov = vec;
808ad2d0 450 msg.msg_iovlen = 1;
bf357333
NC
451
452 cmptr = CMSG_FIRSTHDR(&msg);
453 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
454 cmptr->cmsg_level = SOL_SOCKET;
455 cmptr->cmsg_type = SCM_RIGHTS;
456 *((int *)CMSG_DATA(cmptr)) = 1;
457
458 vec[0].iov_base = (void*)&sv;
459 vec[0].iov_len = sizeof(sv);
460 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
461
462 if(got < 0) {
bf357333 463 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
464 abort();
465 }
bf357333
NC
466 if(got < sizeof(sv)) {
467 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
468 abort();
469 }
470
808ad2d0
NC
471 /* Return protocol is
472 int: errno value
473 unsigned char: length of location string (0 for empty)
474 unsigned char*: string (not terminated)
475 */
476 vec[0].iov_base = (void*)&returned_errno;
477 vec[0].iov_len = sizeof(returned_errno);
478 vec[1].iov_base = buffer;
479 vec[1].iov_len = 1;
480
481 got = readv(sock, vec, 2);
41e4abd8
NC
482
483 if(got < 0) {
484 perror("Debug leaking scalars parent read failed");
808ad2d0 485 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
486 abort();
487 }
808ad2d0 488 if(got < sizeof(returned_errno) + 1) {
41e4abd8 489 perror("Debug leaking scalars parent short read");
808ad2d0 490 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
491 abort();
492 }
493
808ad2d0
NC
494 if (*buffer) {
495 got = read(sock, buffer + 1, *buffer);
496 if(got < 0) {
497 perror("Debug leaking scalars parent read 2 failed");
498 PerlIO_flush(PerlIO_stderr());
499 abort();
500 }
501
502 if(got < *buffer) {
503 perror("Debug leaking scalars parent short read 2");
504 PerlIO_flush(PerlIO_stderr());
505 abort();
506 }
507 }
508
509 if (returned_errno || *buffer) {
510 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
511 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
512 returned_errno, strerror(returned_errno));
41e4abd8
NC
513 }
514}
515#endif
516
62375a60 517/*
954c1994
GS
518=for apidoc perl_destruct
519
520Shuts down a Perl interpreter. See L<perlembed>.
521
522=cut
523*/
524
31d77e54 525int
0cb96387 526perl_destruct(pTHXx)
79072805 527{
27da23d5 528 dVAR;
be2ea8ed 529 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 530 HV *hv;
2aa47728 531#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
532 pid_t child;
533#endif
8990e307 534
7918f24d
NC
535 PERL_ARGS_ASSERT_PERL_DESTRUCT;
536#ifndef MULTIPLICITY
ed6c66dd 537 PERL_UNUSED_ARG(my_perl);
7918f24d 538#endif
9d4ba2ae 539
3d22c4f0
GG
540 assert(PL_scopestack_ix == 1);
541
7766f137
GS
542 /* wait for all pseudo-forked children to finish */
543 PERL_WAIT_FOR_CHILDREN;
544
3280af22 545 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
546#ifdef DEBUGGING
547 {
9d4ba2ae
AL
548 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
549 if (s) {
e1ec3a88 550 const int i = atoi(s);
5f05dabc
PP
551 if (destruct_level < i)
552 destruct_level = i;
553 }
4633a7c4
LW
554 }
555#endif
556
27da23d5 557 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
558 dJMPENV;
559 int x = 0;
560
561 JMPENV_PUSH(x);
1b6737cc 562 PERL_UNUSED_VAR(x);
9ebf26ad 563 if (PL_endav && !PL_minus_c) {
ca7b837b 564 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 565 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 566 }
f3faeb53 567 JMPENV_POP;
26f423df 568 }
f3faeb53 569 LEAVE;
a0d0e21e 570 FREETMPS;
3d22c4f0 571 assert(PL_scopestack_ix == 0);
a0d0e21e 572
e00b64d4 573 /* Need to flush since END blocks can produce output */
f13a2bc0 574 my_fflush_all();
e00b64d4 575
16c91539 576 if (PL_threadhook(aTHX)) {
62375a60 577 /* Threads hook has vetoed further cleanup */
c301d606 578 PL_veto_cleanup = TRUE;
37038d91 579 return STATUS_EXIT;
62375a60
NIS
580 }
581
2aa47728
NC
582#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
583 if (destruct_level != 0) {
584 /* Fork here to create a child. Our child's job is to preserve the
585 state of scalars prior to destruction, so that we can instruct it
586 to dump any scalars that we later find have leaked.
587 There's no subtlety in this code - it assumes POSIX, and it doesn't
588 fail gracefully */
589 int fd[2];
590
591 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
592 perror("Debug leaking scalars socketpair failed");
593 abort();
594 }
595
596 child = fork();
597 if(child == -1) {
598 perror("Debug leaking scalars fork failed");
599 abort();
600 }
601 if (!child) {
602 /* We are the child */
3125a5a4
NC
603 const int sock = fd[1];
604 const int debug_fd = PerlIO_fileno(Perl_debug_log);
605 int f;
808ad2d0
NC
606 const char *where;
607 /* Our success message is an integer 0, and a char 0 */
b61433a9 608 static const char success[sizeof(int) + 1] = {0};
3125a5a4 609
2aa47728 610 close(fd[0]);
2aa47728 611
3125a5a4
NC
612 /* We need to close all other file descriptors otherwise we end up
613 with interesting hangs, where the parent closes its end of a
614 pipe, and sits waiting for (another) child to terminate. Only
615 that child never terminates, because it never gets EOF, because
bf357333
NC
616 we also have the far end of the pipe open. We even need to
617 close the debugging fd, because sometimes it happens to be one
618 end of a pipe, and a process is waiting on the other end for
619 EOF. Normally it would be closed at some point earlier in
620 destruction, but if we happen to cause the pipe to remain open,
621 EOF never occurs, and we get an infinite hang. Hence all the
622 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
623
624 f = sysconf(_SC_OPEN_MAX);
625 if(f < 0) {
808ad2d0
NC
626 where = "sysconf failed";
627 goto abort;
3125a5a4
NC
628 }
629 while (f--) {
630 if (f == sock)
631 continue;
3125a5a4
NC
632 close(f);
633 }
634
2aa47728
NC
635 while (1) {
636 SV *target;
bf357333
NC
637 union control_un control;
638 struct msghdr msg;
639 struct iovec vec[1];
640 struct cmsghdr *cmptr;
641 ssize_t got;
642 int got_fd;
643
644 msg.msg_control = control.control;
645 msg.msg_controllen = sizeof(control.control);
646 /* We're a connected socket so we don't need a source */
647 msg.msg_name = NULL;
648 msg.msg_namelen = 0;
649 msg.msg_iov = vec;
650 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
651
652 vec[0].iov_base = (void*)&target;
653 vec[0].iov_len = sizeof(target);
654
655 got = recvmsg(sock, &msg, 0);
2aa47728
NC
656
657 if(got == 0)
658 break;
659 if(got < 0) {
808ad2d0
NC
660 where = "recv failed";
661 goto abort;
2aa47728
NC
662 }
663 if(got < sizeof(target)) {
808ad2d0
NC
664 where = "short recv";
665 goto abort;
2aa47728 666 }
bf357333 667
808ad2d0
NC
668 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
669 where = "no cmsg";
670 goto abort;
671 }
672 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
673 where = "wrong cmsg_len";
674 goto abort;
675 }
676 if(cmptr->cmsg_level != SOL_SOCKET) {
677 where = "wrong cmsg_level";
678 goto abort;
679 }
680 if(cmptr->cmsg_type != SCM_RIGHTS) {
681 where = "wrong cmsg_type";
682 goto abort;
683 }
bf357333
NC
684
685 got_fd = *(int*)CMSG_DATA(cmptr);
686 /* For our last little bit of trickery, put the file descriptor
687 back into Perl_debug_log, as if we never actually closed it
688 */
808ad2d0
NC
689 if(got_fd != debug_fd) {
690 if (dup2(got_fd, debug_fd) == -1) {
691 where = "dup2";
692 goto abort;
693 }
694 }
2aa47728 695 sv_dump(target);
bf357333 696
2aa47728
NC
697 PerlIO_flush(Perl_debug_log);
698
808ad2d0 699 got = write(sock, &success, sizeof(success));
2aa47728
NC
700
701 if(got < 0) {
808ad2d0
NC
702 where = "write failed";
703 goto abort;
2aa47728 704 }
808ad2d0
NC
705 if(got < sizeof(success)) {
706 where = "short write";
707 goto abort;
2aa47728
NC
708 }
709 }
710 _exit(0);
808ad2d0
NC
711 abort:
712 {
713 int send_errno = errno;
714 unsigned char length = (unsigned char) strlen(where);
715 struct iovec failure[3] = {
716 {(void*)&send_errno, sizeof(send_errno)},
717 {&length, 1},
718 {(void*)where, length}
719 };
720 int got = writev(sock, failure, 3);
721 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
722 in the parent if we try to read from the socketpair after the
723 child has exited, even if there was data to read.
724 So sleep a bit to give the parent a fighting chance of
725 reading the data. */
726 sleep(2);
727 _exit((got == -1) ? errno : 0);
728 }
bf357333 729 /* End of child. */
2aa47728 730 }
41e4abd8 731 PL_dumper_fd = fd[0];
2aa47728
NC
732 close(fd[1]);
733 }
734#endif
735
ff0cee69
PP
736 /* We must account for everything. */
737
738 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
739 /* Do this now, because destroying ops can cause new SVs to be generated
740 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
741 PL_curcop to point to a valid op from which the filename structure
742 member is copied. */
743 PL_curcop = &PL_compiling;
3280af22 744 if (PL_main_root) {
4e380990
DM
745 /* ensure comppad/curpad to refer to main's pad */
746 if (CvPADLIST(PL_main_cv)) {
747 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
748 }
3280af22 749 op_free(PL_main_root);
5f66b61c 750 PL_main_root = NULL;
a0d0e21e 751 }
5f66b61c 752 PL_main_start = NULL;
aac9d523
DM
753 /* note that PL_main_cv isn't usually actually freed at this point,
754 * due to the CvOUTSIDE refs from subs compiled within it. It will
755 * get freed once all the subs are freed in sv_clean_all(), for
756 * destruct_level > 0 */
3280af22 757 SvREFCNT_dec(PL_main_cv);
601f1833 758 PL_main_cv = NULL;
ca7b837b 759 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 760
13621cfb
NIS
761 /* Tell PerlIO we are about to tear things apart in case
762 we have layers which are using resources that should
763 be cleaned up now.
764 */
765
766 PerlIO_destruct(aTHX);
767
3280af22 768 if (PL_sv_objcount) {
a0d0e21e
LW
769 /*
770 * Try to destruct global references. We do this first so that the
771 * destructors and destructees still exist. Some sv's might remain.
772 * Non-referenced objects are on their own.
773 */
a0d0e21e 774 sv_clean_objs();
bf9cdc68 775 PL_sv_objcount = 0;
8990e307
LW
776 }
777
5cd24f17 778 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 779 SvREFCNT_dec(PL_warnhook);
a0714e2c 780 PL_warnhook = NULL;
3280af22 781 SvREFCNT_dec(PL_diehook);
a0714e2c 782 PL_diehook = NULL;
5cd24f17 783
4b556e6c 784 /* call exit list functions */
3280af22 785 while (PL_exitlistlen-- > 0)
acfe0abc 786 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 787
3280af22 788 Safefree(PL_exitlist);
4b556e6c 789
1c4916e5
CB
790 PL_exitlist = NULL;
791 PL_exitlistlen = 0;
792
a3e6e81e
NC
793 SvREFCNT_dec(PL_registered_mros);
794
551a8b83 795 /* jettison our possibly duplicated environment */
4b647fb0
DM
796 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
797 * so we certainly shouldn't free it here
798 */
2f42fcb0 799#ifndef PERL_MICRO
4b647fb0 800#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 801 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
802#ifdef USE_ITHREADS
803 /* only main thread can free environ[0] contents */
804 && PL_curinterp == aTHX
805#endif
806 )
807 {
551a8b83
JH
808 I32 i;
809
810 for (i = 0; environ[i]; i++)
4b420006 811 safesysfree(environ[i]);
0631ea03 812
4b420006
JH
813 /* Must use safesysfree() when working with environ. */
814 safesysfree(environ);
551a8b83
JH
815
816 environ = PL_origenviron;
817 }
818#endif
2f42fcb0 819#endif /* !PERL_MICRO */
551a8b83 820
30985c42
JH
821 if (destruct_level == 0) {
822
823 DEBUG_P(debprofdump());
824
825#if defined(PERLIO_LAYERS)
826 /* No more IO - including error messages ! */
827 PerlIO_cleanup(aTHX);
828#endif
829
830 CopFILE_free(&PL_compiling);
831 CopSTASH_free(&PL_compiling);
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 */
5f8cb046 843 SvREFCNT_dec(PL_regex_padav);
7d49f689 844 PL_regex_padav = NULL;
5f8cb046
DM
845 PL_regex_pad = NULL;
846#endif
847
ad64d0ec 848 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
849 PL_stashcache = NULL;
850
5f05dabc
PP
851 /* loosen bonds of global variables */
852
2f9285f8
DM
853 /* XXX can PL_parser still be non-null here? */
854 if(PL_parser && PL_parser->rsfp) {
855 (void)PerlIO_close(PL_parser->rsfp);
856 PL_parser->rsfp = NULL;
8ebc5c01
PP
857 }
858
84386e14
RGS
859 if (PL_minus_F) {
860 Safefree(PL_splitstr);
861 PL_splitstr = NULL;
862 }
863
8ebc5c01 864 /* switches */
3280af22
NIS
865 PL_minus_n = FALSE;
866 PL_minus_p = FALSE;
867 PL_minus_l = FALSE;
868 PL_minus_a = FALSE;
869 PL_minus_F = FALSE;
870 PL_doswitches = FALSE;
599cee73 871 PL_dowarn = G_WARN_OFF;
3280af22 872 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
873 PL_unsafe = FALSE;
874
875 Safefree(PL_inplace);
bd61b366 876 PL_inplace = NULL;
a7cb1f99 877 SvREFCNT_dec(PL_patchlevel);
1e8125c6 878 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
879
880 if (PL_e_script) {
881 SvREFCNT_dec(PL_e_script);
a0714e2c 882 PL_e_script = NULL;
8ebc5c01
PP
883 }
884
bf9cdc68
RG
885 PL_perldb = 0;
886
8ebc5c01
PP
887 /* magical thingies */
888
e23d9e2f
CS
889 SvREFCNT_dec(PL_ofsgv); /* *, */
890 PL_ofsgv = NULL;
5f05dabc 891
7889fe52 892 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 893 PL_ors_sv = NULL;
8ebc5c01 894
3280af22 895 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 896 PL_rs = NULL;
dc92893f 897
d33b2eba 898 Safefree(PL_osname); /* $^O */
bd61b366 899 PL_osname = NULL;
5f05dabc 900
3280af22 901 SvREFCNT_dec(PL_statname);
a0714e2c
SS
902 PL_statname = NULL;
903 PL_statgv = NULL;
5f05dabc 904
8ebc5c01
PP
905 /* defgv, aka *_ should be taken care of elsewhere */
906
7d5ea4e7
GS
907 /* float buffer */
908 Safefree(PL_efloatbuf);
bd61b366 909 PL_efloatbuf = NULL;
7d5ea4e7
GS
910 PL_efloatsize = 0;
911
8ebc5c01 912 /* startup and shutdown function lists */
3280af22 913 SvREFCNT_dec(PL_beginav);
5a837c8f 914 SvREFCNT_dec(PL_beginav_save);
3280af22 915 SvREFCNT_dec(PL_endav);
7d30b5c4 916 SvREFCNT_dec(PL_checkav);
ece599bd 917 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
918 SvREFCNT_dec(PL_unitcheckav);
919 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 920 SvREFCNT_dec(PL_initav);
7d49f689
NC
921 PL_beginav = NULL;
922 PL_beginav_save = NULL;
923 PL_endav = NULL;
924 PL_checkav = NULL;
925 PL_checkav_save = NULL;
3c10abe3
AG
926 PL_unitcheckav = NULL;
927 PL_unitcheckav_save = NULL;
7d49f689 928 PL_initav = NULL;
5618dfe8 929
8ebc5c01 930 /* shortcuts just get cleared */
a0714e2c
SS
931 PL_envgv = NULL;
932 PL_incgv = NULL;
933 PL_hintgv = NULL;
934 PL_errgv = NULL;
935 PL_argvgv = NULL;
936 PL_argvoutgv = NULL;
937 PL_stdingv = NULL;
938 PL_stderrgv = NULL;
939 PL_last_in_gv = NULL;
940 PL_replgv = NULL;
941 PL_DBgv = NULL;
942 PL_DBline = NULL;
943 PL_DBsub = NULL;
944 PL_DBsingle = NULL;
945 PL_DBtrace = NULL;
946 PL_DBsignal = NULL;
601f1833 947 PL_DBcv = NULL;
7d49f689 948 PL_dbargs = NULL;
5c284bb0 949 PL_debstash = NULL;
8ebc5c01 950
7a1c5554 951 SvREFCNT_dec(PL_argvout_stack);
7d49f689 952 PL_argvout_stack = NULL;
8ebc5c01 953
5c831c24 954 SvREFCNT_dec(PL_modglobal);
5c284bb0 955 PL_modglobal = NULL;
5c831c24 956 SvREFCNT_dec(PL_preambleav);
7d49f689 957 PL_preambleav = NULL;
5c831c24 958 SvREFCNT_dec(PL_subname);
a0714e2c 959 PL_subname = NULL;
ca0c25f6 960#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 961 SvREFCNT_dec(PL_pidstatus);
5c284bb0 962 PL_pidstatus = NULL;
ca0c25f6 963#endif
5c831c24 964 SvREFCNT_dec(PL_toptarget);
a0714e2c 965 PL_toptarget = NULL;
5c831c24 966 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
967 PL_bodytarget = NULL;
968 PL_formtarget = NULL;
5c831c24 969
d33b2eba 970 /* free locale stuff */
b9582b6a 971#ifdef USE_LOCALE_COLLATE
d33b2eba 972 Safefree(PL_collation_name);
bd61b366 973 PL_collation_name = NULL;
b9582b6a 974#endif
d33b2eba 975
b9582b6a 976#ifdef USE_LOCALE_NUMERIC
d33b2eba 977 Safefree(PL_numeric_name);
bd61b366 978 PL_numeric_name = NULL;
a453c169 979 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 980 PL_numeric_radix_sv = NULL;
b9582b6a 981#endif
d33b2eba 982
5c831c24
GS
983 /* clear utf8 character classes */
984 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
985 SvREFCNT_dec(PL_utf8_alpha);
986 SvREFCNT_dec(PL_utf8_space);
5c831c24
GS
987 SvREFCNT_dec(PL_utf8_graph);
988 SvREFCNT_dec(PL_utf8_digit);
989 SvREFCNT_dec(PL_utf8_upper);
990 SvREFCNT_dec(PL_utf8_lower);
991 SvREFCNT_dec(PL_utf8_print);
992 SvREFCNT_dec(PL_utf8_punct);
993 SvREFCNT_dec(PL_utf8_xdigit);
994 SvREFCNT_dec(PL_utf8_mark);
995 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 996 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 997 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 998 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
999 SvREFCNT_dec(PL_utf8_idstart);
1000 SvREFCNT_dec(PL_utf8_idcont);
2726813d 1001 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 1002 PL_utf8_alnum = NULL;
a0714e2c
SS
1003 PL_utf8_alpha = NULL;
1004 PL_utf8_space = NULL;
a0714e2c
SS
1005 PL_utf8_graph = NULL;
1006 PL_utf8_digit = NULL;
1007 PL_utf8_upper = NULL;
1008 PL_utf8_lower = NULL;
1009 PL_utf8_print = NULL;
1010 PL_utf8_punct = NULL;
1011 PL_utf8_xdigit = NULL;
1012 PL_utf8_mark = NULL;
1013 PL_utf8_toupper = NULL;
1014 PL_utf8_totitle = NULL;
1015 PL_utf8_tolower = NULL;
1016 PL_utf8_tofold = NULL;
1017 PL_utf8_idstart = NULL;
1018 PL_utf8_idcont = NULL;
2726813d 1019 PL_utf8_foldclosures = NULL;
5c831c24 1020
971a9dd3 1021 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1022 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1023 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1024 cophh_free(CopHINTHASH_get(&PL_compiling));
1025 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3
NIS
1026 CopFILE_free(&PL_compiling);
1027 CopSTASH_free(&PL_compiling);
5c831c24 1028
a0d0e21e 1029 /* Prepare to destruct main symbol table. */
5f05dabc 1030
3280af22 1031 hv = PL_defstash;
ca556bcd
DM
1032 /* break ref loop *:: <=> %:: */
1033 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1034 PL_defstash = 0;
a0d0e21e 1035 SvREFCNT_dec(hv);
5c831c24 1036 SvREFCNT_dec(PL_curstname);
a0714e2c 1037 PL_curstname = NULL;
a0d0e21e 1038
5a844595
GS
1039 /* clear queued errors */
1040 SvREFCNT_dec(PL_errors);
a0714e2c 1041 PL_errors = NULL;
5a844595 1042
dd69841b
BB
1043 SvREFCNT_dec(PL_isarev);
1044
a0d0e21e 1045 FREETMPS;
9b387841 1046 if (destruct_level >= 2) {
3280af22 1047 if (PL_scopestack_ix != 0)
9b387841
NC
1048 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1049 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1050 (long)PL_scopestack_ix);
3280af22 1051 if (PL_savestack_ix != 0)
9b387841
NC
1052 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1053 "Unbalanced saves: %ld more saves than restores\n",
1054 (long)PL_savestack_ix);
3280af22 1055 if (PL_tmps_floor != -1)
9b387841
NC
1056 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1057 (long)PL_tmps_floor + 1);
a0d0e21e 1058 if (cxstack_ix != -1)
9b387841
NC
1059 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1060 (long)cxstack_ix + 1);
a0d0e21e 1061 }
8990e307 1062
776df701 1063#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1064 /* the entries in this list are allocated via SV PVX's, so get freed
1065 * in sv_clean_all */
1066 Safefree(PL_my_cxt_list);
776df701 1067#endif
57bb2458 1068
8990e307 1069 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1070
1071 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1072 while (sv_clean_all() > 2)
5226ed68
JH
1073 ;
1074
d4777f27
GS
1075 AvREAL_off(PL_fdpid); /* no surviving entries */
1076 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1077 PL_fdpid = NULL;
d33b2eba 1078
6c644e78
GS
1079#ifdef HAVE_INTERP_INTERN
1080 sys_intern_clear();
1081#endif
1082
6e72f9df
PP
1083 /* Destruct the global string table. */
1084 {
1085 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1086 * so that sv_free() won't fail on them.
80459961
NC
1087 * Now that the global string table is using a single hunk of memory
1088 * for both HE and HEK, we either need to explicitly unshare it the
1089 * correct way, or actually free things here.
6e72f9df 1090 */
80459961
NC
1091 I32 riter = 0;
1092 const I32 max = HvMAX(PL_strtab);
c4420975 1093 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1094 HE *hent = array[0];
1095
6e72f9df 1096 for (;;) {
0453d815 1097 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1098 HE * const next = HeNEXT(hent);
9014280d 1099 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1100 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1101 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1102 Safefree(hent);
1103 hent = next;
6e72f9df
PP
1104 }
1105 if (!hent) {
1106 if (++riter > max)
1107 break;
1108 hent = array[riter];
1109 }
1110 }
80459961
NC
1111
1112 Safefree(array);
1113 HvARRAY(PL_strtab) = 0;
1114 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1115 }
3280af22 1116 SvREFCNT_dec(PL_strtab);
6e72f9df 1117
e652bb2f 1118#ifdef USE_ITHREADS
c21d1a0f 1119 /* free the pointer tables used for cloning */
a0739874 1120 ptr_table_free(PL_ptr_table);
bf9cdc68 1121 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1122#endif
a0739874 1123
d33b2eba
GS
1124 /* free special SVs */
1125
1126 SvREFCNT(&PL_sv_yes) = 0;
1127 sv_clear(&PL_sv_yes);
1128 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1129 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1130
1131 SvREFCNT(&PL_sv_no) = 0;
1132 sv_clear(&PL_sv_no);
1133 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1134 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1135
9f375a43
DM
1136 {
1137 int i;
1138 for (i=0; i<=2; i++) {
1139 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1140 sv_clear(PERL_DEBUG_PAD(i));
1141 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1142 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1143 }
1144 }
1145
0453d815 1146 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1147 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1148
eba0f806
DM
1149#ifdef DEBUG_LEAKING_SCALARS
1150 if (PL_sv_count != 0) {
1151 SV* sva;
1152 SV* sv;
1153 register SV* svend;
1154
ad64d0ec 1155 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1156 svend = &sva[SvREFCNT(sva)];
1157 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1158 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1159 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1160 " flags=0x%"UVxf
fd0854ff 1161 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1162 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1163 "serial %"UVuf"\n",
574b8821
NC
1164 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1165 pTHX__VALUE,
fd0854ff
DM
1166 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1167 sv->sv_debug_line,
1168 sv->sv_debug_inpad ? "for" : "by",
1169 sv->sv_debug_optype ?
1170 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1171 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1172 sv->sv_debug_serial
fd0854ff 1173 );
2aa47728 1174#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1175 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1176#endif
eba0f806
DM
1177 }
1178 }
1179 }
1180 }
2aa47728
NC
1181#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1182 {
1183 int status;
1184 fd_set rset;
1185 /* Wait for up to 4 seconds for child to terminate.
1186 This seems to be the least effort way of timing out on reaping
1187 its exit status. */
1188 struct timeval waitfor = {4, 0};
41e4abd8 1189 int sock = PL_dumper_fd;
2aa47728
NC
1190
1191 shutdown(sock, 1);
1192 FD_ZERO(&rset);
1193 FD_SET(sock, &rset);
1194 select(sock + 1, &rset, NULL, NULL, &waitfor);
1195 waitpid(child, &status, WNOHANG);
1196 close(sock);
1197 }
1198#endif
eba0f806 1199#endif
77abb4c6
NC
1200#ifdef DEBUG_LEAKING_SCALARS_ABORT
1201 if (PL_sv_count)
1202 abort();
1203#endif
bf9cdc68 1204 PL_sv_count = 0;
eba0f806 1205
f1fac472
NC
1206#ifdef PERL_DEBUG_READONLY_OPS
1207 free(PL_slabs);
1208 PL_slabs = NULL;
1209 PL_slab_count = 0;
1210#endif
eba0f806 1211
56a2bab7 1212#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1213 /* No more IO - including error messages ! */
1214 PerlIO_cleanup(aTHX);
1215#endif
1216
9f4bd222 1217 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1218 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1219 for no arg - and will try and SvREFCNT_dec it.
1220 */
1221 SvREFCNT(&PL_sv_undef) = 0;
1222 SvREADONLY_off(&PL_sv_undef);
1223
3280af22 1224 Safefree(PL_origfilename);
bd61b366 1225 PL_origfilename = NULL;
3280af22 1226 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1227 PL_reg_start_tmp = (char**)NULL;
1228 PL_reg_start_tmpl = 0;
43c5f42d 1229 Safefree(PL_reg_curpm);
82ba1be6 1230 Safefree(PL_reg_poscache);
dd28f7bb 1231 free_tied_hv_pool();
3280af22 1232 Safefree(PL_op_mask);
cf36064f 1233 Safefree(PL_psig_name);
bf9cdc68 1234 PL_psig_name = (SV**)NULL;
d525a7b2 1235 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1236 {
1237 /* We need to NULL PL_psig_pend first, so that
1238 signal handlers know not to use it */
1239 int *psig_save = PL_psig_pend;
1240 PL_psig_pend = (int*)NULL;
1241 Safefree(psig_save);
1242 }
a0714e2c 1243 PL_formfeed = NULL;
6e72f9df 1244 nuke_stacks();
bf9cdc68
RG
1245 PL_tainting = FALSE;
1246 PL_taint_warn = FALSE;
3280af22 1247 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1248 PL_debug = 0;
ac27b0f5 1249
a0d0e21e 1250 DEBUG_P(debprofdump());
d33b2eba 1251
e5dd39fc 1252#ifdef USE_REENTRANT_API
10bc17b6 1253 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1254#endif
1255
612f20c3
GS
1256 sv_free_arenas();
1257
5d9a96ca
DM
1258 while (PL_regmatch_slab) {
1259 regmatch_slab *s = PL_regmatch_slab;
1260 PL_regmatch_slab = PL_regmatch_slab->next;
1261 Safefree(s);
1262 }
1263
fc36a67e
PP
1264 /* As the absolutely last thing, free the non-arena SV for mess() */
1265
3280af22 1266 if (PL_mess_sv) {
f350b448
NC
1267 /* we know that type == SVt_PVMG */
1268
9c63abab 1269 /* it could have accumulated taint magic */
f350b448
NC
1270 MAGIC* mg;
1271 MAGIC* moremagic;
1272 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1273 moremagic = mg->mg_moremagic;
1274 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1275 && mg->mg_len >= 0)
1276 Safefree(mg->mg_ptr);
1277 Safefree(mg);
9c63abab 1278 }
f350b448 1279
fc36a67e 1280 /* we know that type >= SVt_PV */
8bd4d4c5 1281 SvPV_free(PL_mess_sv);
3280af22
NIS
1282 Safefree(SvANY(PL_mess_sv));
1283 Safefree(PL_mess_sv);
a0714e2c 1284 PL_mess_sv = NULL;
fc36a67e 1285 }
37038d91 1286 return STATUS_EXIT;
79072805
LW
1287}
1288
954c1994
GS
1289/*
1290=for apidoc perl_free
1291
1292Releases a Perl interpreter. See L<perlembed>.
1293
1294=cut
1295*/
1296
79072805 1297void
0cb96387 1298perl_free(pTHXx)
79072805 1299{
5174512c
NC
1300 dVAR;
1301
7918f24d
NC
1302 PERL_ARGS_ASSERT_PERL_FREE;
1303
c301d606
DM
1304 if (PL_veto_cleanup)
1305 return;
1306
7cb608b5 1307#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1308 {
1309 /*
1310 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1311 * value as we're probably hunting memory leaks then
1312 */
1313 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1314 if (!s || atoi(s) == 0) {
4fd0a9b8 1315 const U32 old_debug = PL_debug;
55ef9aae
MHM
1316 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1317 thread at thread exit. */
4fd0a9b8
NC
1318 if (DEBUG_m_TEST) {
1319 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1320 "free this thread's memory\n");
1321 PL_debug &= ~ DEBUG_m_FLAG;
1322 }
55ef9aae
MHM
1323 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1324 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1325 PL_debug = old_debug;
55ef9aae
MHM
1326 }
1327 }
7cb608b5
NC
1328#endif
1329
acfe0abc 1330#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1331# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1332 {
acfe0abc 1333# ifdef NETWARE
7af12a34 1334 void *host = nw_internal_host;
acfe0abc 1335# else
7af12a34 1336 void *host = w32_internal_host;
acfe0abc 1337# endif
7af12a34 1338 PerlMem_free(aTHXx);
acfe0abc 1339# ifdef NETWARE
7af12a34 1340 nw_delete_internal_host(host);
acfe0abc 1341# else
7af12a34 1342 win32_delete_internal_host(host);
acfe0abc 1343# endif
7af12a34 1344 }
1c0ca838
GS
1345# else
1346 PerlMem_free(aTHXx);
1347# endif
acfe0abc
GS
1348#else
1349 PerlMem_free(aTHXx);
76e3520e 1350#endif
79072805
LW
1351}
1352
b7f7fff6 1353#if defined(USE_ITHREADS)
aebd1ac7
GA
1354/* provide destructors to clean up the thread key when libperl is unloaded */
1355#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1356
826955bd 1357#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1358#pragma fini "perl_fini"
666ad1ec
GA
1359#elif defined(__sun) && !defined(__GNUC__)
1360#pragma fini (perl_fini)
aebd1ac7
GA
1361#endif
1362
0dbb1585
AL
1363static void
1364#if defined(__GNUC__)
1365__attribute__((destructor))
aebd1ac7 1366#endif
de009b76 1367perl_fini(void)
aebd1ac7 1368{
27da23d5 1369 dVAR;
c301d606 1370 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1371 FREE_THREAD_KEY;
1372}
1373
1374#endif /* WIN32 */
1375#endif /* THREADS */
1376
4b556e6c 1377void
864dbfa3 1378Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1379{
97aff369 1380 dVAR;
3280af22
NIS
1381 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1382 PL_exitlist[PL_exitlistlen].fn = fn;
1383 PL_exitlist[PL_exitlistlen].ptr = ptr;
1384 ++PL_exitlistlen;
4b556e6c
JD
1385}
1386
b7975bdd
NC
1387STATIC void
1388S_set_caret_X(pTHX) {
97aff369 1389 dVAR;
fafc274c 1390 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1391 if (tmpgv) {
0f1723e1 1392 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1393#if defined(OS2)
1394 sv_setpv(caret_x, os2_execname(aTHX));
1395#else
2982a345
NC
1396# ifdef USE_KERN_PROC_PATHNAME
1397 size_t size = 0;
1398 int mib[4];
1399 mib[0] = CTL_KERN;
1400 mib[1] = KERN_PROC;
1401 mib[2] = KERN_PROC_PATHNAME;
1402 mib[3] = -1;
1403
1404 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1405 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1406 sv_grow(caret_x, size);
1407
1408 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1409 && size > 2) {
1410 SvPOK_only(caret_x);
1411 SvCUR_set(caret_x, size - 1);
1412 SvTAINT(caret_x);
1413 return;
1414 }
1415 }
ae60cb46
NC
1416# elif defined(USE_NSGETEXECUTABLEPATH)
1417 char buf[1];
1418 uint32_t size = sizeof(buf);
ae60cb46
NC
1419
1420 _NSGetExecutablePath(buf, &size);
1421 if (size < MAXPATHLEN * MAXPATHLEN) {
1422 sv_grow(caret_x, size);
1423 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1424 char *const tidied = realpath(SvPVX(caret_x), NULL);
1425 if (tidied) {
1426 sv_setpv(caret_x, tidied);
1427 free(tidied);
1428 } else {
1429 SvPOK_only(caret_x);
1430 SvCUR_set(caret_x, size);
1431 }
1432 return;
1433 }
1434 }
2982a345 1435# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1436 char buf[MAXPATHLEN];
1437 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1438
1439 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1440 includes a spurious NUL which will cause $^X to fail in system
1441 or backticks (this will prevent extensions from being built and
1442 many tests from working). readlink is not meant to add a NUL.
1443 Normal readlink works fine.
1444 */
1445 if (len > 0 && buf[len-1] == '\0') {
1446 len--;
1447 }
1448
1449 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1450 returning the text "unknown" from the readlink rather than the path
1451 to the executable (or returning an error from the readlink). Any
1452 valid path has a '/' in it somewhere, so use that to validate the
1453 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1454 */
1455 if (len > 0 && memchr(buf, '/', len)) {
1456 sv_setpvn(caret_x, buf, len);
82552a95 1457 return;
700dd4f8 1458 }
82552a95
NC
1459# endif
1460 /* Fallback to this: */
0f1723e1 1461 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1462#endif
b7975bdd
NC
1463 }
1464}
1465
954c1994
GS
1466/*
1467=for apidoc perl_parse
1468
1469Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1470
1471=cut
1472*/
1473
03d9f026
FC
1474#define SET_CURSTASH(newstash) \
1475 if (PL_curstash != newstash) { \
1476 SvREFCNT_dec(PL_curstash); \
1477 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1478 }
1479
79072805 1480int
0cb96387 1481perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1482{
27da23d5 1483 dVAR;
6224f72b 1484 I32 oldscope;
6224f72b 1485 int ret;
db36c5a1 1486 dJMPENV;
8d063cd8 1487
7918f24d
NC
1488 PERL_ARGS_ASSERT_PERL_PARSE;
1489#ifndef MULTIPLICITY
ed6c66dd 1490 PERL_UNUSED_ARG(my_perl);
7918f24d 1491#endif
9d4ba2ae 1492
b0891165
JH
1493#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1494 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1495 * This MUST be done before any hash stores or fetches take place.
486ec47a 1496 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1497 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1498 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1499 if (!PL_rehash_seed_set)
1500 PL_rehash_seed = get_hash_seed();
b0891165 1501 {
9d4ba2ae 1502 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1503
1b6737cc
AL
1504 if (s && (atoi(s) == 1))
1505 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1506 }
1507#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1508
3280af22 1509 PL_origargc = argc;
e2975953 1510 PL_origargv = argv;
a0d0e21e 1511
a2722ac9
GA
1512 if (PL_origalen != 0) {
1513 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1514 }
1515 else {
3cb9023d
JH
1516 /* Set PL_origalen be the sum of the contiguous argv[]
1517 * elements plus the size of the env in case that it is
e9137a8e 1518 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1519 * as the maximum modifiable length of $0. In the worst case
1520 * the area we are able to modify is limited to the size of
43c32782 1521 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1522 * --jhi */
e1ec3a88 1523 const char *s = NULL;
54bfe034 1524 int i;
1b6737cc 1525 const UV mask =
7d8e7db3 1526 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1527 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1528 const UV aligned =
43c32782
JH
1529 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1530
1531 /* See if all the arguments are contiguous in memory. Note
1532 * that 'contiguous' is a loose term because some platforms
1533 * align the argv[] and the envp[]. If the arguments look
1534 * like non-aligned, assume that they are 'strictly' or
1535 * 'traditionally' contiguous. If the arguments look like
1536 * aligned, we just check that they are within aligned
1537 * PTRSIZE bytes. As long as no system has something bizarre
1538 * like the argv[] interleaved with some other data, we are
1539 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1540 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1541 while (*s) s++;
1542 for (i = 1; i < PL_origargc; i++) {
1543 if ((PL_origargv[i] == s + 1
43c32782 1544#ifdef OS2
c8941eeb 1545 || PL_origargv[i] == s + 2
43c32782 1546#endif
c8941eeb
JH
1547 )
1548 ||
1549 (aligned &&
1550 (PL_origargv[i] > s &&
1551 PL_origargv[i] <=
1552 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1553 )
1554 {
1555 s = PL_origargv[i];
1556 while (*s) s++;
1557 }
1558 else
1559 break;
54bfe034 1560 }
54bfe034 1561 }
a4a109c2
JD
1562
1563#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1564 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1565 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1566 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1567 ||
1568 (aligned &&
1569 (PL_origenviron[0] > s &&
1570 PL_origenviron[0] <=
1571 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1572 )
1573 {
9d419b5f 1574#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1575 s = PL_origenviron[0];
1576 while (*s) s++;
1577#endif
bd61b366 1578 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1579 /* Force copy of environment. */
1580 for (i = 1; PL_origenviron[i]; i++) {
1581 if (PL_origenviron[i] == s + 1
1582 ||
1583 (aligned &&
1584 (PL_origenviron[i] > s &&
1585 PL_origenviron[i] <=
1586 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1587 )
1588 {
1589 s = PL_origenviron[i];
1590 while (*s) s++;
1591 }
1592 else
1593 break;
54bfe034 1594 }
43c32782 1595 }
54bfe034 1596 }
a4a109c2
JD
1597#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1598
2d2af554 1599 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1600 }
1601
3280af22 1602 if (PL_do_undump) {
a0d0e21e
LW
1603
1604 /* Come here if running an undumped a.out. */
1605
3280af22
NIS
1606 PL_origfilename = savepv(argv[0]);
1607 PL_do_undump = FALSE;
a0d0e21e 1608 cxstack_ix = -1; /* start label stack again */
748a9306 1609 init_ids();
b7975bdd
NC
1610 assert (!PL_tainted);
1611 TAINT;
1612 S_set_caret_X(aTHX);
1613 TAINT_NOT;
a0d0e21e
LW
1614 init_postdump_symbols(argc,argv,env);
1615 return 0;
1616 }
1617
3280af22 1618 if (PL_main_root) {
3280af22 1619 op_free(PL_main_root);
5f66b61c 1620 PL_main_root = NULL;
ff0cee69 1621 }
5f66b61c 1622 PL_main_start = NULL;
3280af22 1623 SvREFCNT_dec(PL_main_cv);
601f1833 1624 PL_main_cv = NULL;
79072805 1625
3280af22
NIS
1626 time(&PL_basetime);
1627 oldscope = PL_scopestack_ix;
599cee73 1628 PL_dowarn = G_WARN_OFF;
f86702cc 1629
14dd3ad8 1630 JMPENV_PUSH(ret);
6224f72b 1631 switch (ret) {
312caa8e 1632 case 0:
14dd3ad8 1633 parse_body(env,xsinit);
9ebf26ad 1634 if (PL_unitcheckav) {
3c10abe3 1635 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1636 }
1637 if (PL_checkav) {
ca7b837b 1638 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1639 call_list(oldscope, PL_checkav);
9ebf26ad 1640 }
14dd3ad8
GS
1641 ret = 0;
1642 break;
6224f72b
GS
1643 case 1:
1644 STATUS_ALL_FAILURE;
1645 /* FALL THROUGH */
1646 case 2:
1647 /* my_exit() was called */
3280af22 1648 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1649 LEAVE;
1650 FREETMPS;
03d9f026 1651 SET_CURSTASH(PL_defstash);
9ebf26ad 1652 if (PL_unitcheckav) {
3c10abe3 1653 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1654 }
1655 if (PL_checkav) {
ca7b837b 1656 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1657 call_list(oldscope, PL_checkav);
9ebf26ad 1658 }
37038d91 1659 ret = STATUS_EXIT;
14dd3ad8 1660 break;
6224f72b 1661 case 3:
bf49b057 1662 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1663 ret = 1;
1664 break;
6224f72b 1665 }
14dd3ad8
GS
1666 JMPENV_POP;
1667 return ret;
1668}
1669
4a5df386
NC
1670/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1671 miniperl, and we need to see those flags reflected in the values here. */
1672
1673/* What this returns is subject to change. Use the public interface in Config.
1674 */
1675static void
1676S_Internals_V(pTHX_ CV *cv)
1677{
1678 dXSARGS;
1679#ifdef LOCAL_PATCH_COUNT
1680 const int local_patch_count = LOCAL_PATCH_COUNT;
1681#else
1682 const int local_patch_count = 0;
1683#endif
2dc296d2 1684 const int entries = 3 + local_patch_count;
4a5df386
NC
1685 int i;
1686 static char non_bincompat_options[] =
1687# ifdef DEBUGGING
1688 " DEBUGGING"
1689# endif
1690# ifdef NO_MATHOMS
0d311fbe 1691 " NO_MATHOMS"
4a5df386
NC
1692# endif
1693# ifdef PERL_DISABLE_PMC
1694 " PERL_DISABLE_PMC"
1695# endif
1696# ifdef PERL_DONT_CREATE_GVSV
1697 " PERL_DONT_CREATE_GVSV"
1698# endif
9a044a43
NC
1699# ifdef PERL_EXTERNAL_GLOB
1700 " PERL_EXTERNAL_GLOB"
1701# endif
4a5df386
NC
1702# ifdef PERL_IS_MINIPERL
1703 " PERL_IS_MINIPERL"
1704# endif
1705# ifdef PERL_MALLOC_WRAP
1706 " PERL_MALLOC_WRAP"
1707# endif
1708# ifdef PERL_MEM_LOG
1709 " PERL_MEM_LOG"
1710# endif
1711# ifdef PERL_MEM_LOG_NOIMPL
1712 " PERL_MEM_LOG_NOIMPL"
1713# endif
c3cf41ec
NC
1714# ifdef PERL_PRESERVE_IVUV
1715 " PERL_PRESERVE_IVUV"
1716# endif
c051e30b
NC
1717# ifdef PERL_RELOCATABLE_INCPUSH
1718 " PERL_RELOCATABLE_INCPUSH"
1719# endif
4a5df386
NC
1720# ifdef PERL_USE_DEVEL
1721 " PERL_USE_DEVEL"
1722# endif
1723# ifdef PERL_USE_SAFE_PUTENV
1724 " PERL_USE_SAFE_PUTENV"
1725# endif
a3749cf3
NC
1726# ifdef UNLINK_ALL_VERSIONS
1727 " UNLINK_ALL_VERSIONS"
1728# endif
de618ee4
NC
1729# ifdef USE_ATTRIBUTES_FOR_PERLIO
1730 " USE_ATTRIBUTES_FOR_PERLIO"
1731# endif
4a5df386
NC
1732# ifdef USE_FAST_STDIO
1733 " USE_FAST_STDIO"
1734# endif
98548bdf
NC
1735# ifdef USE_LOCALE
1736 " USE_LOCALE"
1737# endif
98548bdf
NC
1738# ifdef USE_LOCALE_CTYPE
1739 " USE_LOCALE_CTYPE"
1740# endif
5a8d8935
NC
1741# ifdef USE_PERL_ATOF
1742 " USE_PERL_ATOF"
1743# endif
0d311fbe
NC
1744# ifdef USE_SITECUSTOMIZE
1745 " USE_SITECUSTOMIZE"
1746# endif
4a5df386
NC
1747 ;
1748 PERL_UNUSED_ARG(cv);
1749 PERL_UNUSED_ARG(items);
1750
1751 EXTEND(SP, entries);
1752
1753 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1754 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1755 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1756
1757#ifdef __DATE__
1758# ifdef __TIME__
1759 PUSHs(Perl_newSVpvn_flags(aTHX_
1760 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1761 SVs_TEMP));
1762# else
1763 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1764 SVs_TEMP));
1765# endif
1766#else
1767 PUSHs(&PL_sv_undef);
1768#endif
1769
4a5df386
NC
1770 for (i = 1; i <= local_patch_count; i++) {
1771 /* This will be an undef, if PL_localpatches[i] is NULL. */
1772 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1773 }
1774
1775 XSRETURN(entries);
1776}
1777
be71fc8f
NC
1778#define INCPUSH_UNSHIFT 0x01
1779#define INCPUSH_ADD_OLD_VERS 0x02
1780#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1781#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1782#define INCPUSH_NOT_BASEDIR 0x10
1783#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1784#define INCPUSH_ADD_SUB_DIRS \
1785 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1786
312caa8e 1787STATIC void *
14dd3ad8 1788S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1789{
27da23d5 1790 dVAR;
2f9285f8 1791 PerlIO *rsfp;
312caa8e 1792 int argc = PL_origargc;
8f42b153 1793 char **argv = PL_origargv;
e1ec3a88 1794 const char *scriptname = NULL;
312caa8e 1795 VOL bool dosearch = FALSE;
c7030b81 1796 register char c;
737c24fc 1797 bool doextract = FALSE;
bd61b366 1798 const char *cddir = NULL;
ab019eaa 1799#ifdef USE_SITECUSTOMIZE
20ef40cf 1800 bool minus_f = FALSE;
ab019eaa 1801#endif
009d90df 1802 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1803 bool add_read_e_script = FALSE;
87606032 1804 U32 lex_start_flags = 0;
009d90df 1805
ca7b837b 1806 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1807
009d90df 1808 SvGROW(linestr_sv, 80);
76f68e9b 1809 sv_setpvs(linestr_sv,"");
312caa8e 1810
6224f72b 1811 init_main_stash();
54310121 1812
c7030b81
NC
1813 {
1814 const char *s;
6224f72b
GS
1815 for (argc--,argv++; argc > 0; argc--,argv++) {
1816 if (argv[0][0] != '-' || !argv[0][1])
1817 break;
6224f72b
GS
1818 s = argv[0]+1;
1819 reswitch:
47f56822 1820 switch ((c = *s)) {
729a02f2 1821 case 'C':
1d5472a9
GS
1822#ifndef PERL_STRICT_CR
1823 case '\r':
1824#endif
6224f72b
GS
1825 case ' ':
1826 case '0':
1827 case 'F':
1828 case 'a':
1829 case 'c':
1830 case 'd':
1831 case 'D':
1832 case 'h':
1833 case 'i':
1834 case 'l':
1835 case 'M':
1836 case 'm':
1837 case 'n':
1838 case 'p':
1839 case 's':
1840 case 'u':
1841 case 'U':
1842 case 'v':
599cee73
PM
1843 case 'W':
1844 case 'X':
6224f72b 1845 case 'w':
97bd5664 1846 if ((s = moreswitches(s)))
6224f72b
GS
1847 goto reswitch;
1848 break;
33b78306 1849
1dbad523 1850 case 't':
22f7c9c9 1851 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1852 if( !PL_tainting ) {
1853 PL_taint_warn = TRUE;
1854 PL_tainting = TRUE;
1855 }
1856 s++;
1857 goto reswitch;
6224f72b 1858 case 'T':
22f7c9c9 1859 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1860 PL_tainting = TRUE;
317ea90d 1861 PL_taint_warn = FALSE;
6224f72b
GS
1862 s++;
1863 goto reswitch;
f86702cc 1864
bc9b29db
RH
1865 case 'E':
1866 PL_minus_E = TRUE;
1867 /* FALL THROUGH */
6224f72b 1868 case 'e':
f20b2998 1869 forbid_setid('e', FALSE);
3280af22 1870 if (!PL_e_script) {
396482e1 1871 PL_e_script = newSVpvs("");
5486870f 1872 add_read_e_script = TRUE;
6224f72b
GS
1873 }
1874 if (*++s)
3280af22 1875 sv_catpv(PL_e_script, s);
6224f72b 1876 else if (argv[1]) {
3280af22 1877 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1878 argc--,argv++;
1879 }
1880 else
47f56822 1881 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1882 sv_catpvs(PL_e_script, "\n");
6224f72b 1883 break;
afe37c7d 1884
20ef40cf 1885 case 'f':
f5542d3a 1886#ifdef USE_SITECUSTOMIZE
20ef40cf 1887 minus_f = TRUE;
f5542d3a 1888#endif
20ef40cf
GA
1889 s++;
1890 goto reswitch;
1891
6224f72b 1892 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1893 forbid_setid('I', FALSE);
bd61b366 1894 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1895 argc--,argv++;
1896 }
6224f72b 1897 if (s && *s) {
0df16ed7 1898 STRLEN len = strlen(s);
55b4bc1c 1899 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1900 }
1901 else
a67e862a 1902 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1903 break;
6224f72b 1904 case 'S':
f20b2998 1905 forbid_setid('S', FALSE);
6224f72b
GS
1906 dosearch = TRUE;
1907 s++;
1908 goto reswitch;
1909 case 'V':
7edfd0ef
NC
1910 {
1911 SV *opts_prog;
1912
7edfd0ef 1913 if (*++s != ':') {
37ca4a5b 1914 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1915 }
1916 else {
1917 ++s;
1918 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1919 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1920 0, s, 0);
1921 s += strlen(s);
1922 }
37ca4a5b 1923 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1924 /* don't look for script or read stdin */
1925 scriptname = BIT_BUCKET;
1926 goto reswitch;
6224f72b 1927 }
6224f72b 1928 case 'x':
737c24fc 1929 doextract = TRUE;
6224f72b 1930 s++;
304334da 1931 if (*s)
f4c556ac 1932 cddir = s;
6224f72b
GS
1933 break;
1934 case 0:
1935 break;
1936 case '-':
1937 if (!*++s || isSPACE(*s)) {
1938 argc--,argv++;
1939 goto switch_end;
1940 }
ee8bc8b7
NC
1941 /* catch use of gnu style long options.
1942 Both of these exit immediately. */
1943 if (strEQ(s, "version"))
1944 minus_v();
1945 if (strEQ(s, "help"))
1946 usage();
6224f72b
GS
1947 s--;
1948 /* FALL THROUGH */
1949 default:
cea2e8a9 1950 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1951 }
1952 }
c7030b81
NC
1953 }
1954
6224f72b 1955 switch_end:
54310121 1956
c7030b81
NC
1957 {
1958 char *s;
1959
f675dbe5
CB
1960 if (
1961#ifndef SECURE_INTERNAL_GETENV
1962 !PL_tainting &&
1963#endif
cf756827 1964 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1965 {
74288ac8
GS
1966 while (isSPACE(*s))
1967 s++;
317ea90d 1968 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1969 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1970 PL_tainting = TRUE;
317ea90d
MS
1971 PL_taint_warn = FALSE;
1972 }
74288ac8 1973 else {
bd61b366 1974 char *popt_copy = NULL;
74288ac8 1975 while (s && *s) {
54913509 1976 const char *d;
74288ac8
GS
1977 while (isSPACE(*s))
1978 s++;
1979 if (*s == '-') {
1980 s++;
1981 if (isSPACE(*s))
1982 continue;
1983 }
4ea8f8fb 1984 d = s;
74288ac8
GS
1985 if (!*s)
1986 break;
2b622f1a 1987 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1988 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1989 while (++s && *s) {
1990 if (isSPACE(*s)) {
cf756827 1991 if (!popt_copy) {
bfa6c418
NC
1992 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1993 s = popt_copy + (s - d);
1994 d = popt_copy;
cf756827 1995 }
4ea8f8fb
MS
1996 *s++ = '\0';
1997 break;
1998 }
1999 }
1c4db469 2000 if (*d == 't') {
317ea90d
MS
2001 if( !PL_tainting ) {
2002 PL_taint_warn = TRUE;
2003 PL_tainting = TRUE;
2004 }
1c4db469 2005 } else {
97bd5664 2006 moreswitches(d);
1c4db469 2007 }
6224f72b 2008 }
6224f72b
GS
2009 }
2010 }
c7030b81 2011 }
a0d0e21e 2012
c29067d7
CH
2013 /* Set $^X early so that it can be used for relocatable paths in @INC */
2014 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2015 assert (!PL_tainted);
2016 TAINT;
2017 S_set_caret_X(aTHX);
2018 TAINT_NOT;
2019
43c0c913 2020#if defined(USE_SITECUSTOMIZE)
20ef40cf 2021 if (!minus_f) {
43c0c913 2022 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2023 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2024 ie a q() operator with a NUL byte as a the delimiter. This avoids
2025 problems with pathnames containing (say) ' */
43c0c913
NC
2026# ifdef PERL_IS_MINIPERL
2027 AV *const inc = GvAV(PL_incgv);
2028 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2029
2030 if (inc0) {
2031 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2032 Perl_newSVpvf(aTHX_
fc81b718
NC
2033 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2034 0, *inc0, 0,
2035 0, *inc0, 0));
43c0c913
NC
2036 }
2037# else
2038 /* SITELIB_EXP is a function call on Win32. */
c29067d7
CH
2039 const char *const raw_sitelib = SITELIB_EXP;
2040 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2041 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2042 INCPUSH_CAN_RELOCATE);
2043 const char *const sitelib = SvPVX(sitelib_sv);
29a861e7 2044 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc 2045 Perl_newSVpvf(aTHX_
fc81b718
NC
2046 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2047 0, sitelib, 0,
2048 0, sitelib, 0));
c29067d7
CH
2049 assert (SvREFCNT(sitelib_sv) == 1);
2050 SvREFCNT_dec(sitelib_sv);
43c0c913 2051# endif
20ef40cf
GA
2052 }
2053#endif
2054
6224f72b
GS
2055 if (!scriptname)
2056 scriptname = argv[0];
3280af22 2057 if (PL_e_script) {
6224f72b
GS
2058 argc++,argv--;
2059 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2060 }
bd61b366 2061 else if (scriptname == NULL) {
6224f72b
GS
2062#ifdef MSDOS
2063 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2064 moreswitches("h");
6224f72b
GS
2065#endif
2066 scriptname = "-";
2067 }
2068
b7975bdd 2069 assert (!PL_tainted);
2cace6ac 2070 init_perllib();
6224f72b 2071
a52eba0e 2072 {
f20b2998 2073 bool suidscript = FALSE;
829372d3 2074
8d113837 2075 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2076 if (!rsfp) {
2077 rsfp = PerlIO_stdin();
87606032 2078 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2079 }
6224f72b 2080
b24bc095 2081 validate_suid(rsfp);
6224f72b 2082
64ca3a65 2083#ifndef PERL_MICRO
a52eba0e
NC
2084# if defined(SIGCHLD) || defined(SIGCLD)
2085 {
2086# ifndef SIGCHLD
2087# define SIGCHLD SIGCLD
2088# endif
2089 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2090 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2091 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2092 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2093 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2094 }
0b5b802d 2095 }
a52eba0e 2096# endif
64ca3a65 2097#endif
0b5b802d 2098
737c24fc 2099 if (doextract) {
faef540c 2100
f20b2998 2101 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2102 setuid scripts. */
2103 forbid_setid('x', suidscript);
f20b2998 2104 /* Hence you can't get here if suidscript is true */
faef540c 2105
2f9285f8 2106 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2107 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2108 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2109 }
f4c556ac 2110 }
6224f72b 2111
ea726b52 2112 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2113 CvUNIQUE_on(PL_compcv);
2114
dd2155a4 2115 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2116
dd69841b
BB
2117 PL_isarev = newHV();
2118
0c4f7ff0 2119 boot_core_PerlIO();
6224f72b 2120 boot_core_UNIVERSAL();
e1a479c5 2121 boot_core_mro();
4a5df386 2122 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2123
2124 if (xsinit)
acfe0abc 2125 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2126#ifndef PERL_MICRO
d0d72822 2127#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2128 init_os_extras();
6224f72b 2129#endif
64ca3a65 2130#endif
6224f72b 2131
29209bc5 2132#ifdef USE_SOCKS
1b9c9cf5
DH
2133# ifdef HAS_SOCKS5_INIT
2134 socks5_init(argv[0]);
2135# else
29209bc5 2136 SOCKSinit(argv[0]);
1b9c9cf5 2137# endif
ac27b0f5 2138#endif
29209bc5 2139
6224f72b
GS
2140 init_predump_symbols();
2141 /* init_postdump_symbols not currently designed to be called */
2142 /* more than once (ENV isn't cleared first, for example) */
2143 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2144 if (!PL_do_undump)
6224f72b
GS
2145 init_postdump_symbols(argc,argv,env);
2146
27da23d5
JH
2147 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2148 * or explicitly in some platforms.
085a54d9 2149 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2150 * look like the user wants to use UTF-8. */
a0fd4948 2151#if defined(__SYMBIAN32__)
27da23d5
JH
2152 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2153#endif
e27b5b51 2154# ifndef PERL_IS_MINIPERL
06e66572
JH
2155 if (PL_unicode) {
2156 /* Requires init_predump_symbols(). */
a05d7ebb 2157 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2158 IO* io;
2159 PerlIO* fp;
2160 SV* sv;
2161
a05d7ebb 2162 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2163 * and the default open disciplines. */
a05d7ebb
JH
2164 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2165 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2166 (fp = IoIFP(io)))
2167 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2168 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2169 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2170 (fp = IoOFP(io)))
2171 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2172 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2173 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2174 (fp = IoOFP(io)))
2175 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2176 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2177 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2178 SVt_PV)))) {
a05d7ebb
JH
2179 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2180 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2181 if (in) {
2182 if (out)
76f68e9b 2183 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2184 else
76f68e9b 2185 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2186 }
2187 else if (out)
76f68e9b 2188 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2189 SvSETMAGIC(sv);
2190 }
b310b053
JH
2191 }
2192 }
e27b5b51 2193#endif
b310b053 2194
c7030b81
NC
2195 {
2196 const char *s;
4ffa73a3
JH
2197 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2198 if (strEQ(s, "unsafe"))
2199 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2200 else if (strEQ(s, "safe"))
2201 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2202 else
2203 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2204 }
c7030b81 2205 }
4ffa73a3 2206
81d86705 2207#ifdef PERL_MAD
c7030b81
NC
2208 {
2209 const char *s;
81d86705
NC
2210 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2211 PL_madskills = 1;
2212 PL_minus_c = 1;
2213 if (!s || !s[0])
2214 PL_xmlfp = PerlIO_stdout();
2215 else {
2216 PL_xmlfp = PerlIO_open(s, "w");
2217 if (!PL_xmlfp)
2218 Perl_croak(aTHX_ "Can't open %s", s);
2219 }
1a9a51d4 2220 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2221 }
c7030b81
NC
2222 }
2223
2224 {
2225 const char *s;
81d86705
NC
2226 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2227 PL_madskills = atoi(s);
1a9a51d4 2228 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2229 }
c7030b81 2230 }
81d86705
NC
2231#endif
2232
87606032 2233 lex_start(linestr_sv, rsfp, lex_start_flags);
219f7226 2234 PL_subname = newSVpvs("main");
6224f72b 2235
5486870f
DM
2236 if (add_read_e_script)
2237 filter_add(read_e_script, NULL);
2238
6224f72b
GS
2239 /* now parse the script */
2240
93189314 2241 SETERRNO(0,SS_NORMAL);
28ac2b49 2242 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2243 if (PL_minus_c)
cea2e8a9 2244 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2245 else {
cea2e8a9 2246 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2247 PL_origfilename);
6224f72b
GS
2248 }
2249 }
57843af0 2250 CopLINE_set(PL_curcop, 0);
03d9f026 2251 SET_CURSTASH(PL_defstash);
3280af22
NIS
2252 if (PL_e_script) {
2253 SvREFCNT_dec(PL_e_script);
a0714e2c 2254 PL_e_script = NULL;
6224f72b
GS
2255 }
2256
3280af22 2257 if (PL_do_undump)
6224f72b
GS
2258 my_unexec();
2259
57843af0
GS
2260 if (isWARN_ONCE) {
2261 SAVECOPFILE(PL_curcop);
2262 SAVECOPLINE(PL_curcop);
3280af22 2263 gv_check(PL_defstash);
57843af0 2264 }
6224f72b
GS
2265
2266 LEAVE;
2267 FREETMPS;
2268
2269#ifdef MYMALLOC
f6a607bc
RGS
2270 {
2271 const char *s;
6224f72b
GS
2272 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2273 dump_mstats("after compilation:");
f6a607bc 2274 }
6224f72b
GS
2275#endif
2276
2277 ENTER;
febb3a6d 2278 PL_restartjmpenv = NULL;
3280af22 2279 PL_restartop = 0;
312caa8e 2280 return NULL;
6224f72b
GS
2281}
2282
954c1994
GS
2283/*
2284=for apidoc perl_run
2285
2286Tells a Perl interpreter to run. See L<perlembed>.
2287
2288=cut
2289*/
2290
6224f72b 2291int
0cb96387 2292perl_run(pTHXx)
6224f72b 2293{
97aff369 2294 dVAR;
6224f72b 2295 I32 oldscope;
14dd3ad8 2296 int ret = 0;
db36c5a1 2297 dJMPENV;
6224f72b 2298
7918f24d
NC
2299 PERL_ARGS_ASSERT_PERL_RUN;
2300#ifndef MULTIPLICITY
ed6c66dd 2301 PERL_UNUSED_ARG(my_perl);
7918f24d 2302#endif
9d4ba2ae 2303
3280af22 2304 oldscope = PL_scopestack_ix;
96e176bf
CL
2305#ifdef VMS
2306 VMSISH_HUSHED = 0;
2307#endif
6224f72b 2308
14dd3ad8 2309 JMPENV_PUSH(ret);
6224f72b
GS
2310 switch (ret) {
2311 case 1:
2312 cxstack_ix = -1; /* start context stack again */
312caa8e 2313 goto redo_body;
14dd3ad8 2314 case 0: /* normal completion */
14dd3ad8
GS
2315 redo_body:
2316 run_body(oldscope);
14dd3ad8
GS
2317 /* FALL THROUGH */
2318 case 2: /* my_exit() */
3280af22 2319 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2320 LEAVE;
2321 FREETMPS;
03d9f026 2322 SET_CURSTASH(PL_defstash);
3a1ee7e8 2323 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2324 PL_endav && !PL_minus_c) {
ca7b837b 2325 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2326 call_list(oldscope, PL_endav);
9ebf26ad 2327 }
6224f72b
GS
2328#ifdef MYMALLOC
2329 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2330 dump_mstats("after execution: ");
2331#endif
37038d91 2332 ret = STATUS_EXIT;
14dd3ad8 2333 break;
6224f72b 2334 case 3:
312caa8e
CS
2335 if (PL_restartop) {
2336 POPSTACK_TO(PL_mainstack);
2337 goto redo_body;
6224f72b 2338 }
5637ef5b 2339 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2340 FREETMPS;
14dd3ad8
GS
2341 ret = 1;
2342 break;
6224f72b
GS
2343 }
2344
14dd3ad8
GS
2345 JMPENV_POP;
2346 return ret;
312caa8e
CS
2347}
2348
dd374669 2349STATIC void
14dd3ad8
GS
2350S_run_body(pTHX_ I32 oldscope)
2351{
97aff369 2352 dVAR;
6224f72b 2353 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2354 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2355
3280af22 2356 if (!PL_restartop) {
81d86705
NC
2357#ifdef PERL_MAD
2358 if (PL_xmlfp) {
2359 xmldump_all();
2360 exit(0); /* less likely to core dump than my_exit(0) */
2361 }
2362#endif
cf2782cd 2363#ifdef DEBUGGING
f0e3f042
CS
2364 if (DEBUG_x_TEST || DEBUG_B_TEST)
2365 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2366 if (!DEBUG_q_TEST)
2367 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2368#endif
6224f72b 2369
3280af22 2370 if (PL_minus_c) {
bf49b057 2371 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2372 my_exit(0);
2373 }
3280af22 2374 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2375 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2376 if (PL_initav) {
ca7b837b 2377 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2378 call_list(oldscope, PL_initav);
9ebf26ad 2379 }
f1fac472
NC
2380#ifdef PERL_DEBUG_READONLY_OPS
2381 Perl_pending_Slabs_to_ro(aTHX);
2382#endif
6224f72b
GS
2383 }
2384
2385 /* do it */
2386
ca7b837b 2387 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2388
3280af22 2389 if (PL_restartop) {
febb3a6d 2390 PL_restartjmpenv = NULL;
533c011a 2391 PL_op = PL_restartop;
3280af22 2392 PL_restartop = 0;
cea2e8a9 2393 CALLRUNOPS(aTHX);
6224f72b 2394 }
3280af22
NIS
2395 else if (PL_main_start) {
2396 CvDEPTH(PL_main_cv) = 1;
533c011a 2397 PL_op = PL_main_start;
cea2e8a9 2398 CALLRUNOPS(aTHX);
6224f72b 2399 }
f6b3007c
JH
2400 my_exit(0);
2401 /* NOTREACHED */
6224f72b
GS
2402}
2403
954c1994 2404/*
ccfc67b7
JH
2405=head1 SV Manipulation Functions
2406
954c1994
GS
2407=for apidoc p||get_sv
2408
64ace3f8
NC
2409Returns the SV of the specified Perl scalar. C<flags> are passed to
2410C<gv_fetchpv>. If C<GV_ADD> is set and the
2411Perl variable does not exist then it will be created. If C<flags> is zero
2412and the variable does not exist then NULL is returned.
954c1994
GS
2413
2414=cut
2415*/
2416
6224f72b 2417SV*
64ace3f8 2418Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2419{
2420 GV *gv;
7918f24d
NC
2421
2422 PERL_ARGS_ASSERT_GET_SV;
2423
64ace3f8 2424 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2425 if (gv)
2426 return GvSV(gv);
a0714e2c 2427 return NULL;
6224f72b
GS
2428}
2429
954c1994 2430/*
ccfc67b7
JH
2431=head1 Array Manipulation Functions
2432
954c1994
GS
2433=for apidoc p||get_av
2434
f0b90de1
SF
2435Returns the AV of the specified Perl global or package array with the given
2436name (so it won't work on lexical variables). C<flags> are passed
2437to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2438Perl variable does not exist then it will be created. If C<flags> is zero
2439and the variable does not exist then NULL is returned.
954c1994 2440
f0b90de1
SF
2441Perl equivalent: C<@{"$name"}>.
2442
954c1994
GS
2443=cut
2444*/
2445
6224f72b 2446AV*
cbfd0a87 2447Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2448{
cbfd0a87 2449 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2450
2451 PERL_ARGS_ASSERT_GET_AV;
2452
cbfd0a87 2453 if (flags)
6224f72b
GS
2454 return GvAVn(gv);
2455 if (gv)
2456 return GvAV(gv);
7d49f689 2457 return NULL;
6224f72b
GS
2458}
2459
954c1994 2460/*
ccfc67b7
JH
2461=head1 Hash Manipulation Functions
2462
954c1994
GS
2463=for apidoc p||get_hv
2464
6673a63c
NC
2465Returns the HV of the specified Perl hash. C<flags> are passed to
2466C<gv_fetchpv>. If C<GV_ADD> is set and the
2467Perl variable does not exist then it will be created. If C<flags> is zero
2468and the variable does not exist then NULL is returned.
954c1994
GS
2469
2470=cut
2471*/
2472
6224f72b 2473HV*
6673a63c 2474Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2475{
6673a63c 2476 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2477
2478 PERL_ARGS_ASSERT_GET_HV;
2479
6673a63c 2480 if (flags)
a0d0e21e
LW
2481 return GvHVn(gv);
2482 if (gv)
2483 return GvHV(gv);
5c284bb0 2484 return NULL;
a0d0e21e
LW
2485}
2486
954c1994 2487/*
ccfc67b7
JH
2488=head1 CV Manipulation Functions
2489
780a5241
NC
2490=for apidoc p||get_cvn_flags
2491
2492Returns the CV of the specified Perl subroutine. C<flags> are passed to
2493C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2494exist then it will be declared (which has the same effect as saying
2495C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2496then NULL is returned.
2497
954c1994
GS
2498=for apidoc p||get_cv
2499
780a5241 2500Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2501
2502=cut
2503*/
2504
a0d0e21e 2505CV*
780a5241 2506Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2507{
780a5241 2508 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2509 /* XXX this is probably not what they think they're getting.
2510 * It has the same effect as "sub name;", i.e. just a forward
2511 * declaration! */
7918f24d
NC
2512
2513 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2514
780a5241 2515 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2516 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2517 return newSUB(start_subparse(FALSE, 0),
780a5241 2518 newSVOP(OP_CONST, 0, sv),
5f66b61c 2519 NULL, NULL);
780a5241 2520 }
a0d0e21e 2521 if (gv)
8ebc5c01 2522 return GvCVu(gv);
601f1833 2523 return NULL;
a0d0e21e
LW
2524}
2525
2c67934f
NC
2526/* Nothing in core calls this now, but we can't replace it with a macro and
2527 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2528CV*
2529Perl_get_cv(pTHX_ const char *name, I32 flags)
2530{
7918f24d
NC
2531 PERL_ARGS_ASSERT_GET_CV;
2532
780a5241
NC
2533 return get_cvn_flags(name, strlen(name), flags);
2534}
2535
79072805
LW
2536/* Be sure to refetch the stack pointer after calling these routines. */
2537
954c1994 2538/*
ccfc67b7
JH
2539
2540=head1 Callback Functions
2541
954c1994
GS
2542=for apidoc p||call_argv
2543
f0b90de1
SF
2544Performs a callback to the specified named and package-scoped Perl subroutine
2545with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2546
2547Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2548
2549=cut
2550*/
2551
a0d0e21e 2552I32
8f42b153 2553Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2554
8ac85365
NIS
2555 /* See G_* flags in cop.h */
2556 /* null terminated arg list */
8990e307 2557{
97aff369 2558 dVAR;
a0d0e21e 2559 dSP;
8990e307 2560
7918f24d
NC
2561 PERL_ARGS_ASSERT_CALL_ARGV;
2562
924508f0 2563 PUSHMARK(SP);
a0d0e21e 2564 if (argv) {
8990e307 2565 while (*argv) {
6e449a3a 2566 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2567 argv++;
2568 }
a0d0e21e 2569 PUTBACK;
8990e307 2570 }
864dbfa3 2571 return call_pv(sub_name, flags);
8990e307
LW
2572}
2573
954c1994
GS
2574/*
2575=for apidoc p||call_pv
2576
2577Performs a callback to the specified Perl sub. See L<perlcall>.
2578
2579=cut
2580*/
2581
a0d0e21e 2582I32
864dbfa3 2583Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2584 /* name of the subroutine */
2585 /* See G_* flags in cop.h */
a0d0e21e 2586{
7918f24d
NC
2587 PERL_ARGS_ASSERT_CALL_PV;
2588
0da0e728 2589 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2590}
2591
954c1994
GS
2592/*
2593=for apidoc p||call_method
2594
2595Performs a callback to the specified Perl method. The blessed object must
2596be on the stack. See L<perlcall>.
2597
2598=cut
2599*/
2600
a0d0e21e 2601I32
864dbfa3 2602Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2603 /* name of the subroutine */
2604 /* See G_* flags in cop.h */
a0d0e21e 2605{
46ca9bac 2606 STRLEN len;
7918f24d
NC
2607 PERL_ARGS_ASSERT_CALL_METHOD;
2608
46ca9bac 2609 len = strlen(methname);
2610
2611 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2612 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2613}
2614
2615/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2616/*
2617=for apidoc p||call_sv
2618
2619Performs a callback to the Perl sub whose name is in the SV. See
2620L<perlcall>.
2621
2622=cut
2623*/
2624
a0d0e21e 2625I32
001d637e 2626Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2627 /* See G_* flags in cop.h */
a0d0e21e 2628{
27da23d5 2629 dVAR; dSP;
a0d0e21e 2630 LOGOP myop; /* fake syntax tree node */
968b3946 2631 UNOP method_op;
aa689395 2632 I32 oldmark;
8ea43dc8 2633 VOL I32 retval = 0;
a0d0e21e 2634 I32 oldscope;
54310121 2635 bool oldcatch = CATCH_GET;
6224f72b 2636 int ret;
c4420975 2637 OP* const oldop = PL_op;
db36c5a1 2638 dJMPENV;
1e422769 2639
7918f24d
NC
2640 PERL_ARGS_ASSERT_CALL_SV;
2641
a0d0e21e
LW
2642 if (flags & G_DISCARD) {
2643 ENTER;
2644 SAVETMPS;
2645 }
2f8edad0
NC
2646 if (!(flags & G_WANT)) {
2647 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2648 */
2649 flags |= G_SCALAR;
2650 }
a0d0e21e 2651
aa689395 2652 Zero(&myop, 1, LOGOP);
5f66b61c 2653 myop.op_next = NULL;
f51d4af5 2654 if (!(flags & G_NOARGS))
aa689395 2655 myop.op_flags |= OPf_STACKED;
4f911530 2656 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2657 SAVEOP();
533c011a 2658 PL_op = (OP*)&myop;
aa689395 2659
3280af22
NIS
2660 EXTEND(PL_stack_sp, 1);
2661 *++PL_stack_sp = sv;
aa689395 2662 oldmark = TOPMARK;
3280af22 2663 oldscope = PL_scopestack_ix;
a0d0e21e 2664
3280af22 2665 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2666 /* Handle first BEGIN of -d. */
3280af22 2667 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2668 /* Try harder, since this may have been a sighandler, thus
2669 * curstash may be meaningless. */
ea726b52 2670 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2671 && !(flags & G_NODEBUG))
533c011a 2672 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2673
968b3946
GS
2674 if (flags & G_METHOD) {
2675 Zero(&method_op, 1, UNOP);
2676 method_op.op_next = PL_op;
2677 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2678 method_op.op_type = OP_METHOD;
968b3946 2679 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2680 myop.op_type = OP_ENTERSUB;
f39d0b86 2681 PL_op = (OP*)&method_op;
968b3946
GS
2682 }
2683
312caa8e 2684 if (!(flags & G_EVAL)) {
0cdb2077 2685 CATCH_SET(TRUE);
d6f07c05 2686 CALL_BODY_SUB((OP*)&myop);
312caa8e 2687 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2688 CATCH_SET(oldcatch);
312caa8e
CS
2689 }
2690 else {
d78bda3d 2691 myop.op_other = (OP*)&myop;
3280af22 2692 PL_markstack_ptr--;
edb2152a 2693 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2694 PL_markstack_ptr++;
a0d0e21e 2695
14dd3ad8 2696 JMPENV_PUSH(ret);
edb2152a 2697
6224f72b
GS
2698 switch (ret) {
2699 case 0:
14dd3ad8 2700 redo_body:
d6f07c05 2701 CALL_BODY_SUB((OP*)&myop);
312caa8e 2702 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2703 if (!(flags & G_KEEPERR)) {
ab69dbc2 2704 CLEAR_ERRSV();
8433848b 2705 }
a0d0e21e 2706 break;
6224f72b 2707 case 1:
f86702cc 2708 STATUS_ALL_FAILURE;
a0d0e21e 2709 /* FALL THROUGH */
6224f72b 2710 case 2:
a0d0e21e 2711 /* my_exit() was called */
03d9f026 2712 SET_CURSTASH(PL_defstash);
a0d0e21e 2713 FREETMPS;
14dd3ad8 2714 JMPENV_POP;
f86702cc 2715 my_exit_jump();
a0d0e21e 2716 /* NOTREACHED */
6224f72b 2717 case 3:
3280af22 2718 if (PL_restartop) {
febb3a6d 2719 PL_restartjmpenv = NULL;
533c011a 2720 PL_op = PL_restartop;
3280af22 2721 PL_restartop = 0;
312caa8e 2722 goto redo_body;
a0d0e21e 2723 }
3280af22 2724 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2725 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2726 retval = 0;
2727 else {
2728 retval = 1;
3280af22 2729 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2730 }
312caa8e 2731 break;
a0d0e21e 2732 }
a0d0e21e 2733
edb2152a
NC
2734 if (PL_scopestack_ix > oldscope)
2735 delete_eval_scope();
14dd3ad8 2736 JMPENV_POP;
a0d0e21e 2737 }
1e422769 2738
a0d0e21e 2739 if (flags & G_DISCARD) {
3280af22 2740 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2741 retval = 0;
2742 FREETMPS;
2743 LEAVE;
2744 }
533c011a 2745 PL_op = oldop;
a0d0e21e
LW
2746 return retval;
2747}
2748
6e72f9df 2749/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2750
954c1994
GS
2751/*
2752=for apidoc p||eval_sv
2753
be064c4a
DM
2754Tells Perl to C<eval> the string in the SV. It supports the same flags
2755as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2756
2757=cut
2758*/
2759
a0d0e21e 2760I32
864dbfa3 2761Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2762
8ac85365 2763 /* See G_* flags in cop.h */
a0d0e21e 2764{
97aff369 2765 dVAR;
924508f0 2766 dSP;
a0d0e21e 2767 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2768 VOL I32 oldmark = SP - PL_stack_base;
2769 VOL I32 retval = 0;
6224f72b 2770 int ret;
c4420975 2771 OP* const oldop = PL_op;
db36c5a1 2772 dJMPENV;
84902520 2773
7918f24d
NC
2774 PERL_ARGS_ASSERT_EVAL_SV;
2775
4633a7c4
LW
2776 if (flags & G_DISCARD) {
2777 ENTER;
2778 SAVETMPS;
2779 }
2780
462e5cf6 2781 SAVEOP();
533c011a
NIS
2782 PL_op = (OP*)&myop;
2783 Zero(PL_op, 1, UNOP);
3280af22
NIS
2784 EXTEND(PL_stack_sp, 1);
2785 *++PL_stack_sp = sv;
79072805 2786
4633a7c4
LW
2787 if (!(flags & G_NOARGS))
2788 myop.op_flags = OPf_STACKED;
5f66b61c 2789 myop.op_next = NULL;
6e72f9df 2790 myop.op_type = OP_ENTEREVAL;
4f911530 2791 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2792 if (flags & G_KEEPERR)
2793 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2794
dedbcade
DM
2795 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2796 * before a PUSHEVAL, which corrupts the stack after a croak */
2797 TAINT_PROPER("eval_sv()");
2798
14dd3ad8 2799 JMPENV_PUSH(ret);
6224f72b
GS
2800 switch (ret) {
2801 case 0:
14dd3ad8 2802 redo_body:
2ba65d5f
DM
2803 if (PL_op == (OP*)(&myop)) {
2804 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2805 if (!PL_op)
2806 goto fail; /* failed in compilation */
2807 }
4aca2f62 2808 CALLRUNOPS(aTHX);
312caa8e 2809 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2810 if (!(flags & G_KEEPERR)) {
ab69dbc2 2811 CLEAR_ERRSV();
8433848b 2812 }
4633a7c4 2813 break;
6224f72b 2814 case 1:
f86702cc 2815 STATUS_ALL_FAILURE;
4633a7c4 2816 /* FALL THROUGH */
6224f72b 2817 case 2:
4633a7c4 2818 /* my_exit() was called */
03d9f026 2819 SET_CURSTASH(PL_defstash);
4633a7c4 2820 FREETMPS;
14dd3ad8 2821 JMPENV_POP;
f86702cc 2822 my_exit_jump();
4633a7c4 2823 /* NOTREACHED */
6224f72b 2824 case 3:
3280af22 2825 if (PL_restartop) {
febb3a6d 2826 PL_restartjmpenv = NULL;
533c011a 2827 PL_op = PL_restartop;
3280af22 2828 PL_restartop = 0;
312caa8e 2829 goto redo_body;
4633a7c4 2830 }
4aca2f62 2831 fail:
3280af22 2832 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2833 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2834 retval = 0;
2835 else {
2836 retval = 1;
3280af22 2837 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2838 }
312caa8e 2839 break;
4633a7c4
LW
2840 }
2841
14dd3ad8 2842 JMPENV_POP;
4633a7c4 2843 if (flags & G_DISCARD) {
3280af22 2844 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2845 retval = 0;
2846 FREETMPS;
2847 LEAVE;
2848 }
533c011a 2849 PL_op = oldop;
4633a7c4
LW
2850 return retval;
2851}
2852
954c1994
GS
2853/*
2854=for apidoc p||eval_pv
2855
2856Tells Perl to C<eval> the given string and return an SV* result.
2857
2858=cut
2859*/
2860
137443ea 2861SV*
864dbfa3 2862Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2863{
97aff369 2864 dVAR;
137443ea
PP
2865 dSP;
2866 SV* sv = newSVpv(p, 0);
2867
7918f24d
NC
2868 PERL_ARGS_ASSERT_EVAL_PV;
2869
864dbfa3 2870 eval_sv(sv, G_SCALAR);
137443ea
PP
2871 SvREFCNT_dec(sv);
2872
2873 SPAGAIN;
2874 sv = POPs;
2875 PUTBACK;
2876
2d8e6c8d 2877 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2878 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2879 }
137443ea
PP
2880
2881 return sv;
2882}
2883
4633a7c4
LW
2884/* Require a module. */
2885
954c1994 2886/*
ccfc67b7
JH
2887=head1 Embedding Functions
2888
954c1994
GS
2889=for apidoc p||require_pv
2890
7d3fb230
BS
2891Tells Perl to C<require> the file named by the string argument. It is
2892analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2893implemented that way; consider using load_module instead.
954c1994 2894
7d3fb230 2895=cut */
954c1994 2896
4633a7c4 2897void
864dbfa3 2898Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2899{
97aff369 2900 dVAR;
d3acc0f7 2901 dSP;
97aff369 2902 SV* sv;
7918f24d
NC
2903
2904 PERL_ARGS_ASSERT_REQUIRE_PV;
2905
e788e7d3 2906 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2907 PUTBACK;
be41e5d9
NC
2908 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2909 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2910 SPAGAIN;
2911 POPSTACK;
79072805
LW
2912}
2913
76e3520e 2914STATIC void
b6f82619 2915S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2916{
ab821d7f 2917 /* This message really ought to be max 23 lines.
75c72d73 2918 * Removed -h because the user already knows that option. Others? */
fb73857a 2919
1566c39d
NC
2920 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2921 minimum of 509 character string literals. */
27da23d5 2922 static const char * const usage_msg[] = {
1566c39d
NC
2923" -0[octal] specify record separator (\\0, if no argument)\n"
2924" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2925" -C[number/list] enables the listed Unicode features\n"
2926" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2927" -d[:debugger] run program under debugger\n"
2928" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2929" -e program one line of program (several -e's allowed, omit programfile)\n"
2930" -E program like -e, but enables all optional features\n"
2931" -f don't do $sitelib/sitecustomize.pl at startup\n"
2932" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2933" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2934" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2935" -l[octal] enable line ending processing, specifies line terminator\n"
2936" -[mM][-]module execute \"use/no module...\" before executing program\n"
2937" -n assume \"while (<>) { ... }\" loop around program\n"
2938" -p assume loop like -n but print line also, like sed\n"
2939" -s enable rudimentary parsing for switches after programfile\n"
2940" -S look for programfile using PATH environment variable\n",
2941" -t enable tainting warnings\n"
2942" -T enable tainting checks\n"
2943" -u dump core after parsing program\n"
2944" -U allow unsafe operations\n"
2945" -v print version, patchlevel and license\n"
2946" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2947" -w enable many useful warnings\n"
1566c39d
NC
2948" -W enable all warnings\n"
2949" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2950" -X disable all warnings\n"
2951" \n"
2952"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2953NULL
2954};
27da23d5 2955 const char * const *p = usage_msg;
1566c39d 2956 PerlIO *out = PerlIO_stdout();
fb73857a 2957
1566c39d
NC
2958 PerlIO_printf(out,
2959 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2960 PL_origargv[0]);
fb73857a 2961 while (*p)
1566c39d 2962 PerlIO_puts(out, *p++);
b6f82619 2963 my_exit(0);
4633a7c4
LW
2964}
2965
b4ab917c
DM
2966/* convert a string of -D options (or digits) into an int.
2967 * sets *s to point to the char after the options */
2968
2969#ifdef DEBUGGING
2970int
e1ec3a88 2971Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2972{
27da23d5 2973 static const char * const usage_msgd[] = {
651b8f1a
NC
2974 " Debugging flag values: (see also -d)\n"
2975 " p Tokenizing and parsing (with v, displays parse stack)\n"
2976 " s Stack snapshots (with v, displays all stacks)\n"
2977 " l Context (loop) stack processing\n"
2978 " t Trace execution\n"
2979 " o Method and overloading resolution\n",
2980 " c String/numeric conversions\n"
2981 " P Print profiling info, source file input state\n"
2982 " m Memory and SV allocation\n"
2983 " f Format processing\n"
2984 " r Regular expression parsing and execution\n"
2985 " x Syntax tree dump\n",
2986 " u Tainting checks\n"
2987 " H Hash dump -- usurps values()\n"
2988 " X Scratchpad allocation\n"
2989 " D Cleaning up\n"
2990 " T Tokenising\n"
2991 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2992 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2993 " v Verbose: use in conjunction with other flags\n"
2994 " C Copy On Write\n"
2995 " A Consistency checks on internal structures\n"
2996 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2997 " M trace smart match resolution\n"
2998 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2999 NULL
3000 };
b4ab917c 3001 int i = 0;
7918f24d
NC
3002
3003 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3004
b4ab917c
DM
3005 if (isALPHA(**s)) {
3006 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3007 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
3008
3009 for (; isALNUM(**s); (*s)++) {
c4420975 3010 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3011 if (d)
3012 i |= 1 << (d - debopts);
3013 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3014 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3015 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3016 }
3017 }
e6e64d9b 3018 else if (isDIGIT(**s)) {
b4ab917c
DM
3019 i = atoi(*s);
3020 for (; isALNUM(**s); (*s)++) ;
3021 }
ddcf8bc1 3022 else if (givehelp) {
06e869a4 3023 const char *const *p = usage_msgd;
651b8f1a 3024 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3025 }
b4ab917c
DM
3026# ifdef EBCDIC
3027 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3028 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3029 "-Dp not implemented on this platform\n");
3030# endif
3031 return i;
3032}
3033#endif
3034
79072805
LW
3035/* This routine handles any switches that can be given during run */
3036
c7030b81
NC
3037const char *
3038Perl_moreswitches(pTHX_ const char *s)
79072805 3039{
27da23d5 3040 dVAR;
84c133a0 3041 UV rschar;
0544e6df 3042 const char option = *s; /* used to remember option in -m/-M code */
79072805 3043
7918f24d
NC
3044 PERL_ARGS_ASSERT_MORESWITCHES;
3045
79072805
LW
3046 switch (*s) {
3047 case '0':
a863c7d1 3048 {
f2095865 3049 I32 flags = 0;
a3b680e6 3050 STRLEN numlen;
f2095865
JH
3051
3052 SvREFCNT_dec(PL_rs);
3053 if (s[1] == 'x' && s[2]) {
a3b680e6 3054 const char *e = s+=2;
f2095865
JH
3055 U8 *tmps;
3056
a3b680e6
AL
3057 while (*e)
3058 e++;
f2095865
JH
3059 numlen = e - s;
3060 flags = PERL_SCAN_SILENT_ILLDIGIT;
3061 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3062 if (s + numlen < e) {
3063 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3064 numlen = 0;
3065 s--;
3066 }
396482e1 3067 PL_rs = newSVpvs("");
c5661c80 3068 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3069 tmps = (U8*)SvPVX(PL_rs);
3070 uvchr_to_utf8(tmps, rschar);
3071 SvCUR_set(PL_rs, UNISKIP(rschar));
3072 SvUTF8_on(PL_rs);
3073 }
3074 else {
3075 numlen = 4;
3076 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3077 if (rschar & ~((U8)~0))
3078 PL_rs = &PL_sv_undef;
3079 else if (!rschar && numlen >= 2)
396482e1 3080 PL_rs = newSVpvs("");
f2095865
JH
3081 else {
3082 char ch = (char)rschar;
3083 PL_rs = newSVpvn(&ch, 1);
3084 }
3085 }
64ace3f8 3086 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3087 return s + numlen;
a863c7d1 3088 }
46487f74 3089 case 'C':
a05d7ebb 3090 s++;
dd374669 3091 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3092 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3093 PL_utf8cache = -1;
46487f74 3094 return s;
2304df62 3095 case 'F':
3280af22 3096 PL_minus_F = TRUE;
ebce5377
RGS
3097 PL_splitstr = ++s;
3098 while (*s && !isSPACE(*s)) ++s;
e49e380e 3099 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3100 return s;
79072805 3101 case 'a':
3280af22 3102 PL_minus_a = TRUE;
79072805
LW
3103 s++;
3104 return s;
3105 case 'c':
3280af22 3106 PL_minus_c = TRUE;
79072805
LW
3107 s++;
3108 return s;
3109 case 'd':
f20b2998 3110 forbid_setid('d', FALSE);
4633a7c4 3111 s++;
2cbb2ee1
RGS
3112
3113 /* -dt indicates to the debugger that threads will be used */
3114 if (*s == 't' && !isALNUM(s[1])) {
3115 ++s;
3116 my_setenv("PERL5DB_THREADED", "1");
3117 }
3118
70c94a19
RR
3119 /* The following permits -d:Mod to accepts arguments following an =
3120 in the fashion that -MSome::Mod does. */
3121 if (*s == ':' || *s == '=') {
b19934fb
NC
3122 const char *start;
3123 const char *end;
3124 SV *sv;
3125
3126 if (*++s == '-') {
3127 ++s;
3128 sv = newSVpvs("no Devel::");
3129 } else {
3130 sv = newSVpvs("use Devel::");
3131 }
3132
3133 start = s;
3134 end = s + strlen(s);
f85893a1 3135
b19934fb 3136 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3137 while(isALNUM(*s) || *s==':') ++s;
3138 if (*s != '=')
f85893a1 3139 sv_catpvn(sv, start, end - start);
70c94a19
RR
3140 else {
3141 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3142 /* Don't use NUL as q// delimiter here, this string goes in the
3143 * environment. */
3144 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3145 }
f85893a1 3146 s = end;
184f32ec 3147 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3148 SvREFCNT_dec(sv);
4633a7c4 3149 }
ed094faf 3150 if (!PL_perldb) {
3280af22 3151 PL_perldb = PERLDB_ALL;
a0d0e21e 3152 init_debugger();
ed094faf 3153 }
79072805
LW
3154 return s;
3155 case 'D':
0453d815 3156 {
79072805 3157#ifdef DEBUGGING
f20b2998 3158 forbid_setid('D', FALSE);
b4ab917c 3159 s++;
dd374669 3160 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3161#else /* !DEBUGGING */
0453d815 3162 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3163 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3164 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3165 for (s++; isALNUM(*s); s++) ;
79072805 3166#endif
79072805 3167 return s;
0453d815 3168 }
4633a7c4 3169 case 'h':
b6f82619 3170 usage();
79072805 3171 case 'i':
43c5f42d 3172 Safefree(PL_inplace);
c030f24b
GH
3173#if defined(__CYGWIN__) /* do backup extension automagically */
3174 if (*(s+1) == '\0') {
c86a4f2e 3175 PL_inplace = savepvs(".bak");
c030f24b
GH
3176 return s+1;
3177 }
3178#endif /* __CYGWIN__ */
5ef5d758 3179 {
d4c19fe8 3180 const char * const start = ++s;
5ef5d758
NC
3181 while (*s && !isSPACE(*s))
3182 ++s;
3183
3184 PL_inplace = savepvn(start, s - start);
3185 }
7b8d334a 3186 if (*s) {
5ef5d758 3187 ++s;
7b8d334a 3188 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3189 s++;
7b8d334a 3190 }
fb73857a 3191 return s;
4e49a025 3192 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3193 forbid_setid('I', FALSE);
fb73857a
PP
3194 ++s;
3195 while (*s && isSPACE(*s))
3196 ++s;
3197 if (*s) {
c7030b81 3198 const char *e, *p;
0df16ed7
GS
3199 p = s;
3200 /* ignore trailing spaces (possibly followed by other switches) */
3201 do {
3202 for (e = p; *e && !isSPACE(*e); e++) ;
3203 p = e;
3204 while (isSPACE(*p))
3205 p++;
3206 } while (*p && *p != '-');
55b4bc1c 3207 incpush(s, e-s,
e28f3139 3208 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3209 s = p;
3210 if (*s == '-')
3211 s++;
79072805
LW
3212 }
3213 else
a67e862a 3214 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3215 return s;
79072805 3216 case 'l':
3280af22 3217 PL_minus_l = TRUE;
79072805 3218 s++;
7889fe52
NIS
3219 if (PL_ors_sv) {
3220 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3221 PL_ors_sv = NULL;
7889fe52 3222 }
79072805 3223 if (isDIGIT(*s)) {
53305cf1 3224 I32 flags = 0;
a3b680e6 3225 STRLEN numlen;
396482e1 3226 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3227 numlen = 3 + (*s == '0');
3228 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3229 s += numlen;
3230 }
3231 else {
8bfdd7d9 3232 if (RsPARA(PL_rs)) {
396482e1 3233 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3234 }
3235 else {
8bfdd7d9 3236 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3237 }
79072805
LW
3238 }
3239 return s;
1a30305b 3240 case 'M':
f20b2998 3241 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3242 /* FALL THROUGH */
3243 case 'm':
f20b2998 3244 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3245 if (*++s) {
c7030b81 3246 const char *start;
b64cb68c 3247 const char *end;
11343788 3248 SV *sv;
e1ec3a88 3249 const char *use = "use ";
0544e6df 3250 bool colon = FALSE;
a5f75d66 3251 /* -M-foo == 'no foo' */
d0043bd1
NC
3252 /* Leading space on " no " is deliberate, to make both
3253 possibilities the same length. */
3254 if (*s == '-') { use = " no "; ++s; }
3255 sv = newSVpvn(use,4);
a5f75d66 3256 start = s;
1a30305b 3257 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3258 while(isALNUM(*s) || *s==':') {
3259 if( *s++ == ':' ) {
3260 if( *s == ':' )
3261 s++;
3262 else
3263 colon = TRUE;
3264 }
3265 }
3266 if (s == start)
3267 Perl_croak(aTHX_ "Module name required with -%c option",
3268 option);
3269 if (colon)
3270 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3271 "contains single ':'",
63da6837 3272 (int)(s - start), start, option);
b64cb68c 3273 end = s + strlen(s);
c07a80fd 3274 if (*s != '=') {
b64cb68c 3275 sv_catpvn(sv, start, end - start);
0544e6df 3276 if (option == 'm') {
c07a80fd 3277 if (*s != '\0')
cea2e8a9 3278 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3279 sv_catpvs( sv, " ()");
c07a80fd
PP
3280 }
3281 } else {
11343788 3282 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3283 /* Use NUL as q''-delimiter. */
3284 sv_catpvs(sv, " split(/,/,q\0");
3285 ++s;
3286 sv_catpvn(sv, s, end - s);
396482e1 3287 sv_catpvs(sv, "\0)");
c07a80fd 3288 }
b64cb68c 3289 s = end;
29a861e7 3290 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3291 }
3292 else
0544e6df 3293 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3294 return s;
79072805 3295 case 'n':
3280af22 3296 PL_minus_n = TRUE;
79072805
LW
3297 s++;
3298 return s;
3299 case 'p':
3280af22 3300 PL_minus_p = TRUE;
79072805
LW
3301 s++;
3302 return s;
3303 case 's':
f20b2998 3304 forbid_setid('s', FALSE);
3280af22 3305 PL_doswitches = TRUE;
79072805
LW
3306 s++;
3307 return s;
6537fe72 3308 case 't':
27a6968b 3309 case 'T':
6537fe72 3310 if (!PL_tainting)
27a6968b 3311 TOO_LATE_FOR(*s);
6537fe72 3312 s++;
463ee0b2 3313 return s;
79072805 3314 case 'u':
3280af22 3315 PL_do_undump = TRUE;
79072805
LW
3316 s++;
3317 return s;
3318 case 'U':
3280af22 3319 PL_unsafe = TRUE;
79072805
LW
3320 s++;
3321 return s;
3322 case 'v':
c4bc78d9
NC
3323 minus_v();
3324 case 'w':
3325 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3326 PL_dowarn |= G_WARN_ON;
3327 }
3328 s++;
3329 return s;
3330 case 'W':
3331 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3332 if (!specialWARN(PL_compiling.cop_warnings))
3333 PerlMemShared_free(PL_compiling.cop_warnings);
3334 PL_compiling.cop_warnings = pWARN_ALL ;
3335 s++;
3336 return s;
3337 case 'X':
3338 PL_dowarn = G_WARN_ALL_OFF;
3339 if (!specialWARN(PL_compiling.cop_warnings))
3340 PerlMemShared_free(PL_compiling.cop_warnings);
3341 PL_compiling.cop_warnings = pWARN_NONE ;
3342 s++;
3343 return s;
3344 case '*':
3345 case ' ':
3346 while( *s == ' ' )
3347 ++s;
3348 if (s[0] == '-') /* Additional switches on #! line. */
3349 return s+1;
3350 break;
3351 case '-':
3352 case 0:
3353#if defined(WIN32) || !defined(PERL_STRICT_CR)
3354 case '\r':
3355#endif
3356 case '\n':
3357 case '\t':
3358 break;
3359#ifdef ALTERNATE_SHEBANG
3360 case 'S': /* OS/2 needs -S on "extproc" line. */
3361 break;
3362#endif
4bb78d63
CB
3363 case 'e': case 'f': case 'x': case 'E':
3364#ifndef ALTERNATE_SHEBANG
3365 case 'S':
3366#endif
3367 case 'V':
c4bc78d9 3368 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3369 default:
3370 Perl_croak(aTHX_
3371 "Unrecognized switch: -%.1s (-h will show valid options)",s
3372 );
c4bc78d9
NC
3373 }
3374 return NULL;
3375}
3376
3377
3378STATIC void
3379S_minus_v(pTHX)
3380{
d7aa5382 3381 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3382 upg_version(PL_patchlevel, TRUE);
8e9464f1 3383#if !defined(DGUX)
46807d8e
YO
3384 {
3385 SV* level= vstringify(PL_patchlevel);
3386#ifdef PERL_PATCHNUM
23d483e2
NC
3387# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3388 SV *num = newSVpvs(PERL_PATCHNUM "*");
3389# else
3390 SV *num = newSVpvs(PERL_PATCHNUM);
3391# endif
46807d8e
YO
3392
3393 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3394 SvREFCNT_dec(level);
3395 level= num;
3396 } else {
d0a9311f 3397 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3398 SvREFCNT_dec(num);
3399 }
3400 #endif
3401 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3402 "\nThis is perl " STRINGIFY(PERL_REVISION)
3403 ", version " STRINGIFY(PERL_VERSION)
3404 ", subversion " STRINGIFY(PERL_SUBVERSION)
3405 " (%"SVf") built for " ARCHNAME, level
3406 );
46807d8e
YO
3407 SvREFCNT_dec(level);
3408 }
8e9464f1
JH
3409#else /* DGUX */
3410/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3411 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3412 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3413 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3414 PerlIO_printf(PerlIO_stdout(),
3415 Perl_form(aTHX_ " built under %s at %s %s\n",
3416 OSNAME, __DATE__, __TIME__));
3417 PerlIO_printf(PerlIO_stdout(),
3418 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3419 OSVERS));
8e9464f1 3420#endif /* !DGUX */
fb73857a
PP
3421#if defined(LOCAL_PATCH_COUNT)
3422 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3423 PerlIO_printf(PerlIO_stdout(),
3424 "\n(with %d registered patch%s, "
3425 "see perl -V for more detail)",
bb7a0f54 3426 LOCAL_PATCH_COUNT,
b0e47665 3427 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3428#endif
1a30305b 3429
b0e47665 3430 PerlIO_printf(PerlIO_stdout(),
fdfb76e4 3431 "\n\nCopyright 1987-2012, Larry Wall\n");
79072805 3432#ifdef MSDOS
b0e47665
GS
3433 PerlIO_printf(PerlIO_stdout(),
3434 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3435#endif
3436#ifdef DJGPP
b0e47665
GS
3437 PerlIO_printf(PerlIO_stdout(),
3438 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3439 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3440#endif
79072805 3441#ifdef OS2
b0e47665
GS
3442 PerlIO_printf(PerlIO_stdout(),
3443 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3444 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3445#endif
79072805 3446#ifdef atarist
b0e47665
GS
3447 PerlIO_printf(PerlIO_stdout(),
3448 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3449#endif
a3f9223b 3450#ifdef __BEOS__
b0e47665
GS
3451 PerlIO_printf(PerlIO_stdout(),
3452 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3453#endif
1d84e8df 3454#ifdef MPE
b0e47665 3455 PerlIO_printf(PerlIO_stdout(),
e583a879 3456 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3457#endif
9d116dd7 3458#ifdef OEMVS
b0e47665
GS
3459 PerlIO_printf(PerlIO_stdout(),
3460 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3461#endif
495c5fdc 3462#ifdef __VOS__
b0e47665 3463 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3464 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3465#endif
092bebab 3466#ifdef __OPEN_VM
b0e47665
GS
3467 PerlIO_printf(PerlIO_stdout(),
3468 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3469#endif
a1a0e61e 3470#ifdef POSIX_BC
b0e47665
GS
3471 PerlIO_printf(PerlIO_stdout(),
3472 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3473#endif
f83d2536 3474#ifdef EPOC
b0e47665 3475 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3476 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3477#endif
e1caacb4 3478#ifdef UNDER_CE
b475b3e6
JH
3479 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3480 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3481 wce_hitreturn();
3482#endif
a0fd4948 3483#ifdef __SYMBIAN32__
27da23d5
JH
3484 PerlIO_printf(PerlIO_stdout(),
3485 "Symbian port by Nokia, 2004-2005\n");
3486#endif
baed7233
DL
3487#ifdef BINARY_BUILD_NOTICE
3488 BINARY_BUILD_NOTICE;
3489#endif
b0e47665
GS
3490 PerlIO_printf(PerlIO_stdout(),
3491 "\n\
79072805 3492Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3493GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3494Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3495this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3496Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3497 my_exit(0);
79072805
LW
3498}
3499
3500/* compliments of Tom Christiansen */
3501
3502/* unexec() can be found in the Gnu emacs distribution */
ee580363 3503/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3504
3505void
864dbfa3 3506Perl_my_unexec(pTHX)
79072805 3507{
b37c2d43 3508 PERL_UNUSED_CONTEXT;
79072805 3509#ifdef UNEXEC
b37c2d43
AL
3510 SV * prog = newSVpv(BIN_EXP, 0);
3511 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3512 int status = 1;
79072805
LW
3513 extern int etext;
3514
396482e1 3515 sv_catpvs(prog, "/perl");
396482e1 3516 sv_catpvs(file, ".perldump");
79072805 3517
ee580363
GS
3518 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);