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4b88f280 1#line 2 "perl.c"
a0d0e21e
LW		 2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW		 8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW		 11 */
12
a0d0e21e 13/*
4ac71550
TC		 14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC		 17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM		 21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM		 25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC		 28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH		 37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH		 39#endif
40
2982a345
NC		 41#ifdef USE_KERN_PROC_PATHNAME
42# include <sys/sysctl.h>
43#endif
44
ae60cb46
NC		 45#ifdef USE_NSGETEXECUTABLEPATH
46# include <mach-o/dyld.h>
47#endif
48
2aa47728 49#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC		 50# ifdef I_SYSUIO
51# include <sys/uio.h>
52# endif
53
54union control_un {
55 struct cmsghdr cm;
56 char control[CMSG_SPACE(sizeof(int))];
57};
58
2aa47728
NC		 59#endif
60
5311654c
JH		 61#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 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
0d96b528 245 init_constants();
34caed6d
DM		 246
247 SvREADONLY_on(&PL_sv_placeholder);
248 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
249
250 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 251#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 252 PL_pidstatus = newHV();
ca0c25f6 253#endif
79072805 254
396482e1 255 PL_rs = newSVpvs("\n");
dc92893f 256
cea2e8a9 257 init_stacks();
79072805 258
748a9306 259 init_ids();
a5f75d66 260
312caa8e 261 JMPENV_BOOTSTRAP;
f86702cc 262 STATUS_ALL_SUCCESS;
263
0672f40e 264 init_i18nl10n(1);
36477c24 265 SET_NUMERIC_STANDARD();
0b5b802d 266
ab821d7f 267#if defined(LOCAL_PATCH_COUNT)
3280af22 268 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 269#endif
270
52853b95
GS		 271#ifdef HAVE_INTERP_INTERN
272 sys_intern_init();
273#endif
274
3a1ee7e8 275 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 276
3280af22
NIS		 277 PL_fdpid = newAV(); /* for remembering popen pids by fd */
278 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 279 PL_errors = newSVpvs("");
76f68e9b
MHM		 280 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
281 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
282 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 283#ifdef USE_ITHREADS
402d2eb1
NC		 284 /* First entry is a list of empty elements. It needs to be initialised
285 else all hell breaks loose in S_find_uninit_var(). */
286 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 287 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 288 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 289#endif
e5dd39fc 290#ifdef USE_REENTRANT_API
59bd0823 291 Perl_reentrant_init(aTHX);
e5dd39fc 292#endif
3d47000e
AB		 293
294 /* Note that strtab is a rather special HV. Assumptions are made
295 about not iterating on it, and not adding tie magic to it.
296 It is properly deallocated in perl_destruct() */
297 PL_strtab = newHV();
298
3d47000e
AB		 299 HvSHAREKEYS_off(PL_strtab); /* mandatory */
300 hv_ksplit(PL_strtab, 512);
301
0631ea03
AB		 302#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
303 _dyld_lookup_and_bind
304 ("__environ", (unsigned long *) &environ_pointer, NULL);
305#endif /* environ */
306
2f42fcb0
JH		 307#ifndef PERL_MICRO
308# ifdef USE_ENVIRON_ARRAY
0631ea03 309 PL_origenviron = environ;
2f42fcb0 310# endif
0631ea03
AB		 311#endif
312
5311654c 313 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 314 * available or if the sysconf() fails, use the HZ.
27da23d5
JH		 315 * BeOS has those, but returns the wrong value.
316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
dbc1d986 318#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH		 319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
321#endif
322 PL_clocktick = HZ;
323
081fc587
AB		 324 PL_stashcache = newHV();
325
e8e3635e 326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 327 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 328
27da23d5
JH		 329#ifdef HAS_MMAP
330 if (!PL_mmap_page_size) {
331#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
332 {
333 SETERRNO(0, SS_NORMAL);
334# ifdef _SC_PAGESIZE
335 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
336# else
337 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
338# endif
339 if ((long) PL_mmap_page_size < 0) {
340 if (errno) {
44f8325f 341 SV * const error = ERRSV;
d4c19fe8 342 SvUPGRADE(error, SVt_PV);
0510663f 343 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH		 344 }
345 else
346 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
347 }
348 }
349#else
350# ifdef HAS_GETPAGESIZE
351 PL_mmap_page_size = getpagesize();
352# else
353# if defined(I_SYS_PARAM) && defined(PAGESIZE)
354 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
355# endif
356# endif
357#endif
358 if (PL_mmap_page_size <= 0)
359 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
360 (IV) PL_mmap_page_size);
361 }
362#endif /* HAS_MMAP */
363
364#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
365 PL_timesbase.tms_utime = 0;
366 PL_timesbase.tms_stime = 0;
367 PL_timesbase.tms_cutime = 0;
368 PL_timesbase.tms_cstime = 0;
369#endif
370
7d113631
NC		 371 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
372
a3e6e81e 373 PL_registered_mros = newHV();
9e169432
NC		 374 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
375 HvMAX(PL_registered_mros) = 0;
a3e6e81e 376
8990e307 377 ENTER;
79072805
LW		 378}
379
954c1994 380/*
62375a60
NIS		 381=for apidoc nothreadhook
382
383Stub that provides thread hook for perl_destruct when there are
384no threads.
385
386=cut
387*/
388
389int
4e9e3734 390Perl_nothreadhook(pTHX)
62375a60 391{
96a5add6 392 PERL_UNUSED_CONTEXT;
62375a60
NIS		 393 return 0;
394}
395
41e4abd8
NC		 396#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
397void
398Perl_dump_sv_child(pTHX_ SV *sv)
399{
400 ssize_t got;
bf357333
NC		 401 const int sock = PL_dumper_fd;
402 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC		 403 union control_un control;
404 struct msghdr msg;
808ad2d0 405 struct iovec vec[2];
bf357333 406 struct cmsghdr *cmptr;
808ad2d0
NC		 407 int returned_errno;
408 unsigned char buffer[256];
41e4abd8 409
7918f24d
NC		 410 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
411
bf357333 412 if(sock == -1 || debug_fd == -1)
41e4abd8
NC		 413 return;
414
415 PerlIO_flush(Perl_debug_log);
416
bf357333
NC		 417 /* All these shenanigans are to pass a file descriptor over to our child for
418 it to dump out to. We can't let it hold open the file descriptor when it
419 forks, as the file descriptor it will dump to can turn out to be one end
420 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 421 be open, the wait would be forever.) */
bf357333
NC		 422
423 msg.msg_control = control.control;
424 msg.msg_controllen = sizeof(control.control);
425 /* We're a connected socket so we don't need a destination */
426 msg.msg_name = NULL;
427 msg.msg_namelen = 0;
428 msg.msg_iov = vec;
808ad2d0 429 msg.msg_iovlen = 1;
bf357333
NC		 430
431 cmptr = CMSG_FIRSTHDR(&msg);
432 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
433 cmptr->cmsg_level = SOL_SOCKET;
434 cmptr->cmsg_type = SCM_RIGHTS;
435 *((int *)CMSG_DATA(cmptr)) = 1;
436
437 vec[0].iov_base = (void*)&sv;
438 vec[0].iov_len = sizeof(sv);
439 got = sendmsg(sock, &msg, 0);
41e4abd8
NC		 440
441 if(got < 0) {
bf357333 442 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC		 443 abort();
444 }
bf357333
NC		 445 if(got < sizeof(sv)) {
446 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC		 447 abort();
448 }
449
808ad2d0
NC		 450 /* Return protocol is
451 int: errno value
452 unsigned char: length of location string (0 for empty)
453 unsigned char*: string (not terminated)
454 */
455 vec[0].iov_base = (void*)&returned_errno;
456 vec[0].iov_len = sizeof(returned_errno);
457 vec[1].iov_base = buffer;
458 vec[1].iov_len = 1;
459
460 got = readv(sock, vec, 2);
41e4abd8
NC		 461
462 if(got < 0) {
463 perror("Debug leaking scalars parent read failed");
808ad2d0 464 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC		 465 abort();
466 }
808ad2d0 467 if(got < sizeof(returned_errno) + 1) {
41e4abd8 468 perror("Debug leaking scalars parent short read");
808ad2d0 469 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC		 470 abort();
471 }
472
808ad2d0
NC		 473 if (*buffer) {
474 got = read(sock, buffer + 1, *buffer);
475 if(got < 0) {
476 perror("Debug leaking scalars parent read 2 failed");
477 PerlIO_flush(PerlIO_stderr());
478 abort();
479 }
480
481 if(got < *buffer) {
482 perror("Debug leaking scalars parent short read 2");
483 PerlIO_flush(PerlIO_stderr());
484 abort();
485 }
486 }
487
488 if (returned_errno || *buffer) {
489 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
490 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
491 returned_errno, strerror(returned_errno));
41e4abd8
NC		 492 }
493}
494#endif
495
62375a60 496/*
954c1994
GS		 497=for apidoc perl_destruct
498
499Shuts down a Perl interpreter. See L<perlembed>.
500
501=cut
502*/
503
31d77e54 504int
0cb96387 505perl_destruct(pTHXx)
79072805 506{
27da23d5 507 dVAR;
be2ea8ed 508 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 509 HV *hv;
2aa47728 510#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC		 511 pid_t child;
512#endif
8990e307 513
7918f24d
NC		 514 PERL_ARGS_ASSERT_PERL_DESTRUCT;
515#ifndef MULTIPLICITY
ed6c66dd 516 PERL_UNUSED_ARG(my_perl);
7918f24d 517#endif
9d4ba2ae 518
3d22c4f0
GG		 519 assert(PL_scopestack_ix == 1);
520
7766f137
GS		 521 /* wait for all pseudo-forked children to finish */
522 PERL_WAIT_FOR_CHILDREN;
523
3280af22 524 destruct_level = PL_perl_destruct_level;
36e77d41 525#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 526 {
9d4ba2ae
AL		 527 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
528 if (s) {
36e77d41
DD		 529 const int i = atoi(s);
530#ifdef DEBUGGING
531 if (destruct_level < i) destruct_level = i;
532#endif
533#ifdef PERL_TRACK_MEMPOOL
534 /* RT #114496, for perl_free */
535 PL_perl_destruct_level = i;
536#endif
5f05dabc 537 }
4633a7c4
LW		 538 }
539#endif
540
27da23d5 541 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 542 dJMPENV;
543 int x = 0;
544
545 JMPENV_PUSH(x);
1b6737cc 546 PERL_UNUSED_VAR(x);
9ebf26ad 547 if (PL_endav && !PL_minus_c) {
ca7b837b 548 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 549 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 550 }
f3faeb53 551 JMPENV_POP;
26f423df 552 }
f3faeb53 553 LEAVE;
a0d0e21e 554 FREETMPS;
3d22c4f0 555 assert(PL_scopestack_ix == 0);
a0d0e21e 556
e00b64d4 557 /* Need to flush since END blocks can produce output */
f13a2bc0 558 my_fflush_all();
e00b64d4 559
16c91539 560 if (PL_threadhook(aTHX)) {
62375a60 561 /* Threads hook has vetoed further cleanup */
c301d606 562 PL_veto_cleanup = TRUE;
37038d91 563 return STATUS_EXIT;
62375a60
NIS		 564 }
565
2aa47728
NC		 566#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
567 if (destruct_level != 0) {
568 /* Fork here to create a child. Our child's job is to preserve the
569 state of scalars prior to destruction, so that we can instruct it
570 to dump any scalars that we later find have leaked.
571 There's no subtlety in this code - it assumes POSIX, and it doesn't
572 fail gracefully */
573 int fd[2];
574
575 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
576 perror("Debug leaking scalars socketpair failed");
577 abort();
578 }
579
580 child = fork();
581 if(child == -1) {
582 perror("Debug leaking scalars fork failed");
583 abort();
584 }
585 if (!child) {
586 /* We are the child */
3125a5a4
NC		 587 const int sock = fd[1];
588 const int debug_fd = PerlIO_fileno(Perl_debug_log);
589 int f;
808ad2d0
NC		 590 const char *where;
591 /* Our success message is an integer 0, and a char 0 */
b61433a9 592 static const char success[sizeof(int) + 1] = {0};
3125a5a4 593
2aa47728 594 close(fd[0]);
2aa47728 595
3125a5a4
NC		 596 /* We need to close all other file descriptors otherwise we end up
597 with interesting hangs, where the parent closes its end of a
598 pipe, and sits waiting for (another) child to terminate. Only
599 that child never terminates, because it never gets EOF, because
bf357333
NC		 600 we also have the far end of the pipe open. We even need to
601 close the debugging fd, because sometimes it happens to be one
602 end of a pipe, and a process is waiting on the other end for
603 EOF. Normally it would be closed at some point earlier in
604 destruction, but if we happen to cause the pipe to remain open,
605 EOF never occurs, and we get an infinite hang. Hence all the
606 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC		 607
608 f = sysconf(_SC_OPEN_MAX);
609 if(f < 0) {
808ad2d0
NC		 610 where = "sysconf failed";
611 goto abort;
3125a5a4
NC		 612 }
613 while (f--) {
614 if (f == sock)
615 continue;
3125a5a4
NC		 616 close(f);
617 }
618
2aa47728
NC		 619 while (1) {
620 SV *target;
bf357333
NC		 621 union control_un control;
622 struct msghdr msg;
623 struct iovec vec[1];
624 struct cmsghdr *cmptr;
625 ssize_t got;
626 int got_fd;
627
628 msg.msg_control = control.control;
629 msg.msg_controllen = sizeof(control.control);
630 /* We're a connected socket so we don't need a source */
631 msg.msg_name = NULL;
632 msg.msg_namelen = 0;
633 msg.msg_iov = vec;
634 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
635
636 vec[0].iov_base = (void*)&target;
637 vec[0].iov_len = sizeof(target);
638
639 got = recvmsg(sock, &msg, 0);
2aa47728
NC		 640
641 if(got == 0)
642 break;
643 if(got < 0) {
808ad2d0
NC		 644 where = "recv failed";
645 goto abort;
2aa47728
NC		 646 }
647 if(got < sizeof(target)) {
808ad2d0
NC		 648 where = "short recv";
649 goto abort;
2aa47728 650 }
bf357333 651
808ad2d0
NC		 652 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
653 where = "no cmsg";
654 goto abort;
655 }
656 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
657 where = "wrong cmsg_len";
658 goto abort;
659 }
660 if(cmptr->cmsg_level != SOL_SOCKET) {
661 where = "wrong cmsg_level";
662 goto abort;
663 }
664 if(cmptr->cmsg_type != SCM_RIGHTS) {
665 where = "wrong cmsg_type";
666 goto abort;
667 }
bf357333
NC		 668
669 got_fd = *(int*)CMSG_DATA(cmptr);
670 /* For our last little bit of trickery, put the file descriptor
671 back into Perl_debug_log, as if we never actually closed it
672 */
808ad2d0
NC		 673 if(got_fd != debug_fd) {
674 if (dup2(got_fd, debug_fd) == -1) {
675 where = "dup2";
676 goto abort;
677 }
678 }
2aa47728 679 sv_dump(target);
bf357333 680
2aa47728
NC		 681 PerlIO_flush(Perl_debug_log);
682
808ad2d0 683 got = write(sock, &success, sizeof(success));
2aa47728
NC		 684
685 if(got < 0) {
808ad2d0
NC		 686 where = "write failed";
687 goto abort;
2aa47728 688 }
808ad2d0
NC		 689 if(got < sizeof(success)) {
690 where = "short write";
691 goto abort;
2aa47728
NC		 692 }
693 }
694 _exit(0);
808ad2d0
NC		 695 abort:
696 {
697 int send_errno = errno;
698 unsigned char length = (unsigned char) strlen(where);
699 struct iovec failure[3] = {
700 {(void*)&send_errno, sizeof(send_errno)},
701 {&length, 1},
702 {(void*)where, length}
703 };
704 int got = writev(sock, failure, 3);
705 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
706 in the parent if we try to read from the socketpair after the
707 child has exited, even if there was data to read.
708 So sleep a bit to give the parent a fighting chance of
709 reading the data. */
710 sleep(2);
711 _exit((got == -1) ? errno : 0);
712 }
bf357333 713 /* End of child. */
2aa47728 714 }
41e4abd8 715 PL_dumper_fd = fd[0];
2aa47728
NC		 716 close(fd[1]);
717 }
718#endif
719
ff0cee69 720 /* We must account for everything. */
721
722 /* Destroy the main CV and syntax tree */
37e77c23
FC		 723 /* Set PL_curcop now, because destroying ops can cause new SVs
724 to be generated in Perl_pad_swipe, and when running with
725 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
726 op from which the filename structure member is copied. */
17fbfdf6 727 PL_curcop = &PL_compiling;
3280af22 728 if (PL_main_root) {
4e380990
DM		 729 /* ensure comppad/curpad to refer to main's pad */
730 if (CvPADLIST(PL_main_cv)) {
731 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
732 }
3280af22 733 op_free(PL_main_root);
5f66b61c 734 PL_main_root = NULL;
a0d0e21e 735 }
5f66b61c 736 PL_main_start = NULL;
aac9d523
DM		 737 /* note that PL_main_cv isn't usually actually freed at this point,
738 * due to the CvOUTSIDE refs from subs compiled within it. It will
739 * get freed once all the subs are freed in sv_clean_all(), for
740 * destruct_level > 0 */
3280af22 741 SvREFCNT_dec(PL_main_cv);
601f1833 742 PL_main_cv = NULL;
ca7b837b 743 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 744
13621cfb
NIS		 745 /* Tell PerlIO we are about to tear things apart in case
746 we have layers which are using resources that should
747 be cleaned up now.
748 */
749
750 PerlIO_destruct(aTHX);
751
3280af22 752 if (PL_sv_objcount) {
a0d0e21e
LW		 753 /*
754 * Try to destruct global references. We do this first so that the
755 * destructors and destructees still exist. Some sv's might remain.
756 * Non-referenced objects are on their own.
757 */
a0d0e21e 758 sv_clean_objs();
bf9cdc68 759 PL_sv_objcount = 0;
8990e307
LW		 760 }
761
5cd24f17 762 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 763 SvREFCNT_dec(PL_warnhook);
a0714e2c 764 PL_warnhook = NULL;
3280af22 765 SvREFCNT_dec(PL_diehook);
a0714e2c 766 PL_diehook = NULL;
5cd24f17 767
4b556e6c 768 /* call exit list functions */
3280af22 769 while (PL_exitlistlen-- > 0)
acfe0abc 770 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 771
3280af22 772 Safefree(PL_exitlist);
4b556e6c 773
1c4916e5
CB		 774 PL_exitlist = NULL;
775 PL_exitlistlen = 0;
776
a3e6e81e
NC		 777 SvREFCNT_dec(PL_registered_mros);
778
551a8b83 779 /* jettison our possibly duplicated environment */
4b647fb0
DM		 780 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
781 * so we certainly shouldn't free it here
782 */
2f42fcb0 783#ifndef PERL_MICRO
4b647fb0 784#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 785 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS		 786#ifdef USE_ITHREADS
787 /* only main thread can free environ[0] contents */
788 && PL_curinterp == aTHX
789#endif
790 )
791 {
551a8b83
JH		 792 I32 i;
793
794 for (i = 0; environ[i]; i++)
4b420006 795 safesysfree(environ[i]);
0631ea03 796
4b420006
JH		 797 /* Must use safesysfree() when working with environ. */
798 safesysfree(environ);
551a8b83
JH		 799
800 environ = PL_origenviron;
801 }
802#endif
2f42fcb0 803#endif /* !PERL_MICRO */
551a8b83 804
30985c42
JH		 805 if (destruct_level == 0) {
806
807 DEBUG_P(debprofdump());
808
809#if defined(PERLIO_LAYERS)
810 /* No more IO - including error messages ! */
811 PerlIO_cleanup(aTHX);
812#endif
813
814 CopFILE_free(&PL_compiling);
30985c42
JH		 815
816 /* The exit() function will do everything that needs doing. */
817 return STATUS_EXIT;
818 }
819
5f8cb046
DM		 820#ifdef USE_ITHREADS
821 /* the syntax tree is shared between clones
822 * so op_free(PL_main_root) only ReREFCNT_dec's
823 * REGEXPs in the parent interpreter
824 * we need to manually ReREFCNT_dec for the clones
825 */
0547a729
DM		 826 {
827 I32 i = AvFILLp(PL_regex_padav);
828 SV **ary = AvARRAY(PL_regex_padav);
829
830 for (; i; i--) {
831 SvREFCNT_dec(ary[i]);
832 ary[i] = &PL_sv_undef;
833 }
834 }
d4d03940 835 Safefree(PL_stashpad);
5f8cb046
DM		 836#endif
837
0547a729 838
ad64d0ec 839 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB		 840 PL_stashcache = NULL;
841
5f05dabc 842 /* loosen bonds of global variables */
843
2f9285f8
DM		 844 /* XXX can PL_parser still be non-null here? */
845 if(PL_parser && PL_parser->rsfp) {
846 (void)PerlIO_close(PL_parser->rsfp);
847 PL_parser->rsfp = NULL;
8ebc5c01 848 }
849
84386e14
RGS		 850 if (PL_minus_F) {
851 Safefree(PL_splitstr);
852 PL_splitstr = NULL;
853 }
854
8ebc5c01 855 /* switches */
3280af22
NIS		 856 PL_minus_n = FALSE;
857 PL_minus_p = FALSE;
858 PL_minus_l = FALSE;
859 PL_minus_a = FALSE;
860 PL_minus_F = FALSE;
861 PL_doswitches = FALSE;
599cee73 862 PL_dowarn = G_WARN_OFF;
3280af22 863 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 864 PL_unsafe = FALSE;
865
866 Safefree(PL_inplace);
bd61b366 867 PL_inplace = NULL;
a7cb1f99 868 SvREFCNT_dec(PL_patchlevel);
1e8125c6 869 SvREFCNT_dec(PL_apiversion);
3280af22
NIS		 870
871 if (PL_e_script) {
872 SvREFCNT_dec(PL_e_script);
a0714e2c 873 PL_e_script = NULL;
8ebc5c01 874 }
875
bf9cdc68
RG		 876 PL_perldb = 0;
877
8ebc5c01 878 /* magical thingies */
879
e23d9e2f
CS		 880 SvREFCNT_dec(PL_ofsgv); /* *, */
881 PL_ofsgv = NULL;
5f05dabc 882
7889fe52 883 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 884 PL_ors_sv = NULL;
8ebc5c01 885
3280af22 886 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 887 PL_rs = NULL;
dc92893f 888
d33b2eba 889 Safefree(PL_osname); /* $^O */
bd61b366 890 PL_osname = NULL;
5f05dabc 891
3280af22 892 SvREFCNT_dec(PL_statname);
a0714e2c
SS		 893 PL_statname = NULL;
894 PL_statgv = NULL;
5f05dabc 895
8ebc5c01 896 /* defgv, aka *_ should be taken care of elsewhere */
897
7d5ea4e7
GS		 898 /* float buffer */
899 Safefree(PL_efloatbuf);
bd61b366 900 PL_efloatbuf = NULL;
7d5ea4e7
GS		 901 PL_efloatsize = 0;
902
8ebc5c01 903 /* startup and shutdown function lists */
3280af22 904 SvREFCNT_dec(PL_beginav);
5a837c8f 905 SvREFCNT_dec(PL_beginav_save);
3280af22 906 SvREFCNT_dec(PL_endav);
7d30b5c4 907 SvREFCNT_dec(PL_checkav);
ece599bd 908 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG		 909 SvREFCNT_dec(PL_unitcheckav);
910 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 911 SvREFCNT_dec(PL_initav);
7d49f689
NC		 912 PL_beginav = NULL;
913 PL_beginav_save = NULL;
914 PL_endav = NULL;
915 PL_checkav = NULL;
916 PL_checkav_save = NULL;
3c10abe3
AG		 917 PL_unitcheckav = NULL;
918 PL_unitcheckav_save = NULL;
7d49f689 919 PL_initav = NULL;
5618dfe8 920
8ebc5c01 921 /* shortcuts just get cleared */
a0714e2c
SS		 922 PL_envgv = NULL;
923 PL_incgv = NULL;
924 PL_hintgv = NULL;
925 PL_errgv = NULL;
926 PL_argvgv = NULL;
927 PL_argvoutgv = NULL;
928 PL_stdingv = NULL;
929 PL_stderrgv = NULL;
930 PL_last_in_gv = NULL;
931 PL_replgv = NULL;
932 PL_DBgv = NULL;
933 PL_DBline = NULL;
934 PL_DBsub = NULL;
935 PL_DBsingle = NULL;
936 PL_DBtrace = NULL;
937 PL_DBsignal = NULL;
601f1833 938 PL_DBcv = NULL;
7d49f689 939 PL_dbargs = NULL;
5c284bb0 940 PL_debstash = NULL;
8ebc5c01 941
7a1c5554 942 SvREFCNT_dec(PL_argvout_stack);
7d49f689 943 PL_argvout_stack = NULL;
8ebc5c01 944
5c831c24 945 SvREFCNT_dec(PL_modglobal);
5c284bb0 946 PL_modglobal = NULL;
5c831c24 947 SvREFCNT_dec(PL_preambleav);
7d49f689 948 PL_preambleav = NULL;
5c831c24 949 SvREFCNT_dec(PL_subname);
a0714e2c 950 PL_subname = NULL;
ca0c25f6 951#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 952 SvREFCNT_dec(PL_pidstatus);
5c284bb0 953 PL_pidstatus = NULL;
ca0c25f6 954#endif
5c831c24 955 SvREFCNT_dec(PL_toptarget);
a0714e2c 956 PL_toptarget = NULL;
5c831c24 957 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS		 958 PL_bodytarget = NULL;
959 PL_formtarget = NULL;
5c831c24 960
d33b2eba 961 /* free locale stuff */
b9582b6a 962#ifdef USE_LOCALE_COLLATE
d33b2eba 963 Safefree(PL_collation_name);
bd61b366 964 PL_collation_name = NULL;
b9582b6a 965#endif
d33b2eba 966
b9582b6a 967#ifdef USE_LOCALE_NUMERIC
d33b2eba 968 Safefree(PL_numeric_name);
bd61b366 969 PL_numeric_name = NULL;
a453c169 970 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 971 PL_numeric_radix_sv = NULL;
b9582b6a 972#endif
d33b2eba 973
5c831c24
GS		 974 /* clear utf8 character classes */
975 SvREFCNT_dec(PL_utf8_alnum);
5c831c24 976 SvREFCNT_dec(PL_utf8_alpha);
bdd8600f 977 SvREFCNT_dec(PL_utf8_blank);
5c831c24 978 SvREFCNT_dec(PL_utf8_space);
5c831c24
GS		 979 SvREFCNT_dec(PL_utf8_graph);
980 SvREFCNT_dec(PL_utf8_digit);
981 SvREFCNT_dec(PL_utf8_upper);
982 SvREFCNT_dec(PL_utf8_lower);
983 SvREFCNT_dec(PL_utf8_print);
984 SvREFCNT_dec(PL_utf8_punct);
985 SvREFCNT_dec(PL_utf8_xdigit);
986 SvREFCNT_dec(PL_utf8_mark);
987 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 988 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 989 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 990 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH		 991 SvREFCNT_dec(PL_utf8_idstart);
992 SvREFCNT_dec(PL_utf8_idcont);
2726813d 993 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 994 PL_utf8_alnum = NULL;
a0714e2c 995 PL_utf8_alpha = NULL;
bdd8600f 996 PL_utf8_blank = NULL;
a0714e2c 997 PL_utf8_space = NULL;
a0714e2c
SS		 998 PL_utf8_graph = NULL;
999 PL_utf8_digit = NULL;
1000 PL_utf8_upper = NULL;
1001 PL_utf8_lower = NULL;
1002 PL_utf8_print = NULL;
1003 PL_utf8_punct = NULL;
1004 PL_utf8_xdigit = NULL;
1005 PL_utf8_mark = NULL;
1006 PL_utf8_toupper = NULL;
1007 PL_utf8_totitle = NULL;
1008 PL_utf8_tolower = NULL;
1009 PL_utf8_tofold = NULL;
1010 PL_utf8_idstart = NULL;
1011 PL_utf8_idcont = NULL;
2726813d 1012 PL_utf8_foldclosures = NULL;
5c831c24 1013
971a9dd3 1014 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1015 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1016 PL_compiling.cop_warnings = NULL;
20439bc7
Z		 1017 cophh_free(CopHINTHASH_get(&PL_compiling));
1018 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1019 CopFILE_free(&PL_compiling);
5c831c24 1020
a0d0e21e 1021 /* Prepare to destruct main symbol table. */
5f05dabc 1022
3280af22 1023 hv = PL_defstash;
ca556bcd
DM		 1024 /* break ref loop *:: <=> %:: */
1025 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1026 PL_defstash = 0;
a0d0e21e 1027 SvREFCNT_dec(hv);
5c831c24 1028 SvREFCNT_dec(PL_curstname);
a0714e2c 1029 PL_curstname = NULL;
a0d0e21e 1030
5a844595
GS		 1031 /* clear queued errors */
1032 SvREFCNT_dec(PL_errors);
a0714e2c 1033 PL_errors = NULL;
5a844595 1034
dd69841b
BB		 1035 SvREFCNT_dec(PL_isarev);
1036
a0d0e21e 1037 FREETMPS;
9b387841 1038 if (destruct_level >= 2) {
3280af22 1039 if (PL_scopestack_ix != 0)
9b387841
NC		 1040 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1041 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1042 (long)PL_scopestack_ix);
3280af22 1043 if (PL_savestack_ix != 0)
9b387841
NC		 1044 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1045 "Unbalanced saves: %ld more saves than restores\n",
1046 (long)PL_savestack_ix);
3280af22 1047 if (PL_tmps_floor != -1)
9b387841
NC		 1048 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1049 (long)PL_tmps_floor + 1);
a0d0e21e 1050 if (cxstack_ix != -1)
9b387841
NC		 1051 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1052 (long)cxstack_ix + 1);
a0d0e21e 1053 }
8990e307 1054
0547a729
DM		 1055#ifdef USE_ITHREADS
1056 SvREFCNT_dec(PL_regex_padav);
1057 PL_regex_padav = NULL;
1058 PL_regex_pad = NULL;
1059#endif
1060
776df701 1061#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH		 1062 /* the entries in this list are allocated via SV PVX's, so get freed
1063 * in sv_clean_all */
1064 Safefree(PL_my_cxt_list);
776df701 1065#endif
57bb2458 1066
8990e307 1067 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH		 1068
1069 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1070 while (sv_clean_all() > 2)
5226ed68
JH		 1071 ;
1072
d4777f27
GS		 1073 AvREAL_off(PL_fdpid); /* no surviving entries */
1074 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1075 PL_fdpid = NULL;
d33b2eba 1076
6c644e78
GS		 1077#ifdef HAVE_INTERP_INTERN
1078 sys_intern_clear();
1079#endif
1080
6e72f9df 1081 /* Destruct the global string table. */
1082 {
1083 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1084 * so that sv_free() won't fail on them.
80459961
NC		 1085 * Now that the global string table is using a single hunk of memory
1086 * for both HE and HEK, we either need to explicitly unshare it the
1087 * correct way, or actually free things here.
6e72f9df 1088 */
80459961
NC		 1089 I32 riter = 0;
1090 const I32 max = HvMAX(PL_strtab);
c4420975 1091 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC		 1092 HE *hent = array[0];
1093
6e72f9df 1094 for (;;) {
0453d815 1095 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1096 HE * const next = HeNEXT(hent);
9014280d 1097 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1098 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1099 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC		 1100 Safefree(hent);
1101 hent = next;
6e72f9df 1102 }
1103 if (!hent) {
1104 if (++riter > max)
1105 break;
1106 hent = array[riter];
1107 }
1108 }
80459961
NC		 1109
1110 Safefree(array);
1111 HvARRAY(PL_strtab) = 0;
1112 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1113 }
3280af22 1114 SvREFCNT_dec(PL_strtab);
6e72f9df 1115
e652bb2f 1116#ifdef USE_ITHREADS
c21d1a0f 1117 /* free the pointer tables used for cloning */
a0739874 1118 ptr_table_free(PL_ptr_table);
bf9cdc68 1119 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1120#endif
a0739874 1121
d33b2eba
GS		 1122 /* free special SVs */
1123
1124 SvREFCNT(&PL_sv_yes) = 0;
1125 sv_clear(&PL_sv_yes);
1126 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1127 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 1128
1129 SvREFCNT(&PL_sv_no) = 0;
1130 sv_clear(&PL_sv_no);
1131 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1132 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1133
9f375a43
DM		 1134 {
1135 int i;
1136 for (i=0; i<=2; i++) {
1137 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1138 sv_clear(PERL_DEBUG_PAD(i));
1139 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1140 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1141 }
1142 }
1143
0453d815 1144 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1145 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1146
eba0f806
DM		 1147#ifdef DEBUG_LEAKING_SCALARS
1148 if (PL_sv_count != 0) {
1149 SV* sva;
1150 SV* sv;
eb578fdb 1151 SV* svend;
eba0f806 1152
ad64d0ec 1153 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM		 1154 svend = &sva[SvREFCNT(sva)];
1155 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1156 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1157 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1158 " flags=0x%"UVxf
fd0854ff 1159 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM		 1160 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1161 "serial %"UVuf"\n",
574b8821
NC		 1162 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1163 pTHX__VALUE,
fd0854ff
DM		 1164 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1165 sv->sv_debug_line,
1166 sv->sv_debug_inpad ? "for" : "by",
1167 sv->sv_debug_optype ?
1168 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1169 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1170 sv->sv_debug_serial
fd0854ff 1171 );
2aa47728 1172#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1173 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1174#endif
eba0f806
DM		 1175 }
1176 }
1177 }
1178 }
2aa47728
NC		 1179#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1180 {
1181 int status;
1182 fd_set rset;
1183 /* Wait for up to 4 seconds for child to terminate.
1184 This seems to be the least effort way of timing out on reaping
1185 its exit status. */
1186 struct timeval waitfor = {4, 0};
41e4abd8 1187 int sock = PL_dumper_fd;
2aa47728
NC		 1188
1189 shutdown(sock, 1);
1190 FD_ZERO(&rset);
1191 FD_SET(sock, &rset);
1192 select(sock + 1, &rset, NULL, NULL, &waitfor);
1193 waitpid(child, &status, WNOHANG);
1194 close(sock);
1195 }
1196#endif
eba0f806 1197#endif
77abb4c6
NC		 1198#ifdef DEBUG_LEAKING_SCALARS_ABORT
1199 if (PL_sv_count)
1200 abort();
1201#endif
bf9cdc68 1202 PL_sv_count = 0;
eba0f806 1203
56a2bab7 1204#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS		 1205 /* No more IO - including error messages ! */
1206 PerlIO_cleanup(aTHX);
1207#endif
1208
9f4bd222 1209 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1210 as currently layers use it rather than NULL as a marker
9f4bd222
NIS		 1211 for no arg - and will try and SvREFCNT_dec it.
1212 */
1213 SvREFCNT(&PL_sv_undef) = 0;
1214 SvREADONLY_off(&PL_sv_undef);
1215
3280af22 1216 Safefree(PL_origfilename);
bd61b366 1217 PL_origfilename = NULL;
43c5f42d 1218 Safefree(PL_reg_curpm);
82ba1be6 1219 Safefree(PL_reg_poscache);
dd28f7bb 1220 free_tied_hv_pool();
3280af22 1221 Safefree(PL_op_mask);
cf36064f 1222 Safefree(PL_psig_name);
bf9cdc68 1223 PL_psig_name = (SV**)NULL;
d525a7b2 1224 PL_psig_ptr = (SV**)NULL;
31c91b43
LR		 1225 {
1226 /* We need to NULL PL_psig_pend first, so that
1227 signal handlers know not to use it */
1228 int *psig_save = PL_psig_pend;
1229 PL_psig_pend = (int*)NULL;
1230 Safefree(psig_save);
1231 }
a0714e2c 1232 PL_formfeed = NULL;
6e72f9df 1233 nuke_stacks();
bf9cdc68
RG		 1234 PL_tainting = FALSE;
1235 PL_taint_warn = FALSE;
3280af22 1236 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1237 PL_debug = 0;
ac27b0f5 1238
a0d0e21e 1239 DEBUG_P(debprofdump());
d33b2eba 1240
e5dd39fc 1241#ifdef USE_REENTRANT_API
10bc17b6 1242 Perl_reentrant_free(aTHX);
e5dd39fc
AB		 1243#endif
1244
612f20c3
GS		 1245 sv_free_arenas();
1246
5d9a96ca
DM		 1247 while (PL_regmatch_slab) {
1248 regmatch_slab *s = PL_regmatch_slab;
1249 PL_regmatch_slab = PL_regmatch_slab->next;
1250 Safefree(s);
1251 }
1252
fc36a67e 1253 /* As the absolutely last thing, free the non-arena SV for mess() */
1254
3280af22 1255 if (PL_mess_sv) {
f350b448
NC		 1256 /* we know that type == SVt_PVMG */
1257
9c63abab 1258 /* it could have accumulated taint magic */
f350b448
NC		 1259 MAGIC* mg;
1260 MAGIC* moremagic;
1261 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1262 moremagic = mg->mg_moremagic;
1263 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1264 && mg->mg_len >= 0)
1265 Safefree(mg->mg_ptr);
1266 Safefree(mg);
9c63abab 1267 }
f350b448 1268
fc36a67e 1269 /* we know that type >= SVt_PV */
8bd4d4c5 1270 SvPV_free(PL_mess_sv);
3280af22
NIS		 1271 Safefree(SvANY(PL_mess_sv));
1272 Safefree(PL_mess_sv);
a0714e2c 1273 PL_mess_sv = NULL;
fc36a67e 1274 }
37038d91 1275 return STATUS_EXIT;
79072805
LW		 1276}
1277
954c1994
GS		 1278/*
1279=for apidoc perl_free
1280
1281Releases a Perl interpreter. See L<perlembed>.
1282
1283=cut
1284*/
1285
79072805 1286void
0cb96387 1287perl_free(pTHXx)
79072805 1288{
5174512c
NC		 1289 dVAR;
1290
7918f24d
NC		 1291 PERL_ARGS_ASSERT_PERL_FREE;
1292
c301d606
DM		 1293 if (PL_veto_cleanup)
1294 return;
1295
7cb608b5 1296#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM		 1297 {
1298 /*
1299 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1300 * value as we're probably hunting memory leaks then
1301 */
36e77d41 1302 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1303 const U32 old_debug = PL_debug;
55ef9aae
MHM		 1304 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1305 thread at thread exit. */
4fd0a9b8
NC		 1306 if (DEBUG_m_TEST) {
1307 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1308 "free this thread's memory\n");
1309 PL_debug &= ~ DEBUG_m_FLAG;
1310 }
55ef9aae
MHM		 1311 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1312 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1313 PL_debug = old_debug;
55ef9aae
MHM		 1314 }
1315 }
7cb608b5
NC		 1316#endif
1317
acfe0abc 1318#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1319# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1320 {
acfe0abc 1321# ifdef NETWARE
7af12a34 1322 void *host = nw_internal_host;
acfe0abc 1323# else
7af12a34 1324 void *host = w32_internal_host;
acfe0abc 1325# endif
7af12a34 1326 PerlMem_free(aTHXx);
acfe0abc 1327# ifdef NETWARE
7af12a34 1328 nw_delete_internal_host(host);
acfe0abc 1329# else
7af12a34 1330 win32_delete_internal_host(host);
acfe0abc 1331# endif
7af12a34 1332 }
1c0ca838
GS		 1333# else
1334 PerlMem_free(aTHXx);
1335# endif
acfe0abc
GS		 1336#else
1337 PerlMem_free(aTHXx);
76e3520e 1338#endif
79072805
LW		 1339}
1340
b7f7fff6 1341#if defined(USE_ITHREADS)
aebd1ac7
GA		 1342/* provide destructors to clean up the thread key when libperl is unloaded */
1343#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1344
826955bd 1345#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1346#pragma fini "perl_fini"
666ad1ec
GA		 1347#elif defined(__sun) && !defined(__GNUC__)
1348#pragma fini (perl_fini)
aebd1ac7
GA		 1349#endif
1350
0dbb1585
AL		 1351static void
1352#if defined(__GNUC__)
1353__attribute__((destructor))
aebd1ac7 1354#endif
de009b76 1355perl_fini(void)
aebd1ac7 1356{
27da23d5 1357 dVAR;
c301d606 1358 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA		 1359 FREE_THREAD_KEY;
1360}
1361
1362#endif /* WIN32 */
1363#endif /* THREADS */
1364
4b556e6c 1365void
864dbfa3 1366Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1367{
97aff369 1368 dVAR;
3280af22
NIS		 1369 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1370 PL_exitlist[PL_exitlistlen].fn = fn;
1371 PL_exitlist[PL_exitlistlen].ptr = ptr;
1372 ++PL_exitlistlen;
4b556e6c
JD		 1373}
1374
b7975bdd
NC		 1375STATIC void
1376S_set_caret_X(pTHX) {
97aff369 1377 dVAR;
fafc274c 1378 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1379 if (tmpgv) {
0f1723e1 1380 SV *const caret_x = GvSV(tmpgv);
82552a95
NC		 1381#if defined(OS2)
1382 sv_setpv(caret_x, os2_execname(aTHX));
1383#else
2982a345
NC		 1384# ifdef USE_KERN_PROC_PATHNAME
1385 size_t size = 0;
1386 int mib[4];
1387 mib[0] = CTL_KERN;
1388 mib[1] = KERN_PROC;
1389 mib[2] = KERN_PROC_PATHNAME;
1390 mib[3] = -1;
1391
1392 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1393 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1394 sv_grow(caret_x, size);
1395
1396 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1397 && size > 2) {
1398 SvPOK_only(caret_x);
1399 SvCUR_set(caret_x, size - 1);
1400 SvTAINT(caret_x);
1401 return;
1402 }
1403 }
ae60cb46
NC		 1404# elif defined(USE_NSGETEXECUTABLEPATH)
1405 char buf[1];
1406 uint32_t size = sizeof(buf);
ae60cb46
NC		 1407
1408 _NSGetExecutablePath(buf, &size);
1409 if (size < MAXPATHLEN * MAXPATHLEN) {
1410 sv_grow(caret_x, size);
1411 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1412 char *const tidied = realpath(SvPVX(caret_x), NULL);
1413 if (tidied) {
1414 sv_setpv(caret_x, tidied);
1415 free(tidied);
1416 } else {
1417 SvPOK_only(caret_x);
1418 SvCUR_set(caret_x, size);
1419 }
1420 return;
1421 }
1422 }
2982a345 1423# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC		 1424 char buf[MAXPATHLEN];
1425 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1426
1427 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1428 includes a spurious NUL which will cause $^X to fail in system
1429 or backticks (this will prevent extensions from being built and
1430 many tests from working). readlink is not meant to add a NUL.
1431 Normal readlink works fine.
1432 */
1433 if (len > 0 && buf[len-1] == '\0') {
1434 len--;
1435 }
1436
1437 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1438 returning the text "unknown" from the readlink rather than the path
1439 to the executable (or returning an error from the readlink). Any
1440 valid path has a '/' in it somewhere, so use that to validate the
1441 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1442 */
1443 if (len > 0 && memchr(buf, '/', len)) {
1444 sv_setpvn(caret_x, buf, len);
82552a95 1445 return;
700dd4f8 1446 }
82552a95
NC		 1447# endif
1448 /* Fallback to this: */
0f1723e1 1449 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1450#endif
b7975bdd
NC		 1451 }
1452}
1453
954c1994
GS		 1454/*
1455=for apidoc perl_parse
1456
1457Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1458
1459=cut
1460*/
1461
03d9f026
FC		 1462#define SET_CURSTASH(newstash) \
1463 if (PL_curstash != newstash) { \
1464 SvREFCNT_dec(PL_curstash); \
1465 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1466 }
1467
79072805 1468int
0cb96387 1469perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1470{
27da23d5 1471 dVAR;
6224f72b 1472 I32 oldscope;
6224f72b 1473 int ret;
db36c5a1 1474 dJMPENV;
8d063cd8 1475
7918f24d
NC		 1476 PERL_ARGS_ASSERT_PERL_PARSE;
1477#ifndef MULTIPLICITY
ed6c66dd 1478 PERL_UNUSED_ARG(my_perl);
7918f24d 1479#endif
9d4ba2ae 1480
b0891165
JH		 1481#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1482 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1483 * This MUST be done before any hash stores or fetches take place.
486ec47a 1484 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1485 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1486 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC		 1487 if (!PL_rehash_seed_set)
1488 PL_rehash_seed = get_hash_seed();
b0891165 1489 {
9d4ba2ae 1490 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1491
1b6737cc
AL		 1492 if (s && (atoi(s) == 1))
1493 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH		 1494 }
1495#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1496
3280af22 1497 PL_origargc = argc;
e2975953 1498 PL_origargv = argv;
a0d0e21e 1499
a2722ac9
GA		 1500 if (PL_origalen != 0) {
1501 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1502 }
1503 else {
3cb9023d
JH		 1504 /* Set PL_origalen be the sum of the contiguous argv[]
1505 * elements plus the size of the env in case that it is
e9137a8e 1506 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH		 1507 * as the maximum modifiable length of $0. In the worst case
1508 * the area we are able to modify is limited to the size of
43c32782 1509 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1510 * --jhi */
e1ec3a88 1511 const char *s = NULL;
54bfe034 1512 int i;
1b6737cc 1513 const UV mask =
7d8e7db3 1514 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1515 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1516 const UV aligned =
43c32782
JH		 1517 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1518
1519 /* See if all the arguments are contiguous in memory. Note
1520 * that 'contiguous' is a loose term because some platforms
1521 * align the argv[] and the envp[]. If the arguments look
1522 * like non-aligned, assume that they are 'strictly' or
1523 * 'traditionally' contiguous. If the arguments look like
1524 * aligned, we just check that they are within aligned
1525 * PTRSIZE bytes. As long as no system has something bizarre
1526 * like the argv[] interleaved with some other data, we are
1527 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH		 1528 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1529 while (*s) s++;
1530 for (i = 1; i < PL_origargc; i++) {
1531 if ((PL_origargv[i] == s + 1
43c32782 1532#ifdef OS2
c8941eeb 1533 || PL_origargv[i] == s + 2
43c32782 1534#endif
c8941eeb
JH		 1535 )
1536 ||
1537 (aligned &&
1538 (PL_origargv[i] > s &&
1539 PL_origargv[i] <=
1540 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1541 )
1542 {
1543 s = PL_origargv[i];
1544 while (*s) s++;
1545 }
1546 else
1547 break;
54bfe034 1548 }
54bfe034 1549 }
a4a109c2
JD		 1550
1551#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1552 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1553 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1554 if ((PL_origenviron[0] == s + 1)
43c32782
JH		 1555 ||
1556 (aligned &&
1557 (PL_origenviron[0] > s &&
1558 PL_origenviron[0] <=
1559 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1560 )
1561 {
9d419b5f 1562#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH		 1563 s = PL_origenviron[0];
1564 while (*s) s++;
1565#endif
bd61b366 1566 my_setenv("NoNe SuCh", NULL);
43c32782
JH		 1567 /* Force copy of environment. */
1568 for (i = 1; PL_origenviron[i]; i++) {
1569 if (PL_origenviron[i] == s + 1
1570 ||
1571 (aligned &&
1572 (PL_origenviron[i] > s &&
1573 PL_origenviron[i] <=
1574 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1575 )
1576 {
1577 s = PL_origenviron[i];
1578 while (*s) s++;
1579 }
1580 else
1581 break;
54bfe034 1582 }
43c32782 1583 }
54bfe034 1584 }
a4a109c2
JD		 1585#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1586
2d2af554 1587 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH		 1588 }
1589
3280af22 1590 if (PL_do_undump) {
a0d0e21e
LW		 1591
1592 /* Come here if running an undumped a.out. */
1593
3280af22
NIS		 1594 PL_origfilename = savepv(argv[0]);
1595 PL_do_undump = FALSE;
a0d0e21e 1596 cxstack_ix = -1; /* start label stack again */
748a9306 1597 init_ids();
b7975bdd
NC		 1598 assert (!PL_tainted);
1599 TAINT;
1600 S_set_caret_X(aTHX);
1601 TAINT_NOT;
a0d0e21e
LW		 1602 init_postdump_symbols(argc,argv,env);
1603 return 0;
1604 }
1605
3280af22 1606 if (PL_main_root) {
3280af22 1607 op_free(PL_main_root);
5f66b61c 1608 PL_main_root = NULL;
ff0cee69 1609 }
5f66b61c 1610 PL_main_start = NULL;
3280af22 1611 SvREFCNT_dec(PL_main_cv);
601f1833 1612 PL_main_cv = NULL;
79072805 1613
3280af22
NIS		 1614 time(&PL_basetime);
1615 oldscope = PL_scopestack_ix;
599cee73 1616 PL_dowarn = G_WARN_OFF;
f86702cc 1617
14dd3ad8 1618 JMPENV_PUSH(ret);
6224f72b 1619 switch (ret) {
312caa8e 1620 case 0:
14dd3ad8 1621 parse_body(env,xsinit);
9ebf26ad 1622 if (PL_unitcheckav) {
3c10abe3 1623 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR		 1624 }
1625 if (PL_checkav) {
ca7b837b 1626 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1627 call_list(oldscope, PL_checkav);
9ebf26ad 1628 }
14dd3ad8
GS		 1629 ret = 0;
1630 break;
6224f72b
GS		 1631 case 1:
1632 STATUS_ALL_FAILURE;
1633 /* FALL THROUGH */
1634 case 2:
1635 /* my_exit() was called */
3280af22 1636 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1637 LEAVE;
1638 FREETMPS;
03d9f026 1639 SET_CURSTASH(PL_defstash);
9ebf26ad 1640 if (PL_unitcheckav) {
3c10abe3 1641 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR		 1642 }
1643 if (PL_checkav) {
ca7b837b 1644 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1645 call_list(oldscope, PL_checkav);
9ebf26ad 1646 }
37038d91 1647 ret = STATUS_EXIT;
14dd3ad8 1648 break;
6224f72b 1649 case 3:
bf49b057 1650 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1651 ret = 1;
1652 break;
6224f72b 1653 }
14dd3ad8
GS		 1654 JMPENV_POP;
1655 return ret;
1656}
1657
4a5df386
NC		 1658/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1659 miniperl, and we need to see those flags reflected in the values here. */
1660
1661/* What this returns is subject to change. Use the public interface in Config.
1662 */
1663static void
1664S_Internals_V(pTHX_ CV *cv)
1665{
1666 dXSARGS;
1667#ifdef LOCAL_PATCH_COUNT
1668 const int local_patch_count = LOCAL_PATCH_COUNT;
1669#else
1670 const int local_patch_count = 0;
1671#endif
2dc296d2 1672 const int entries = 3 + local_patch_count;
4a5df386
NC		 1673 int i;
1674 static char non_bincompat_options[] =
1675# ifdef DEBUGGING
1676 " DEBUGGING"
1677# endif
1678# ifdef NO_MATHOMS
0d311fbe 1679 " NO_MATHOMS"
4a5df386
NC		 1680# endif
1681# ifdef PERL_DISABLE_PMC
1682 " PERL_DISABLE_PMC"
1683# endif
1684# ifdef PERL_DONT_CREATE_GVSV
1685 " PERL_DONT_CREATE_GVSV"
1686# endif
9a044a43
NC		 1687# ifdef PERL_EXTERNAL_GLOB
1688 " PERL_EXTERNAL_GLOB"
1689# endif
4a5df386
NC		 1690# ifdef PERL_IS_MINIPERL
1691 " PERL_IS_MINIPERL"
1692# endif
1693# ifdef PERL_MALLOC_WRAP
1694 " PERL_MALLOC_WRAP"
1695# endif
1696# ifdef PERL_MEM_LOG
1697 " PERL_MEM_LOG"
1698# endif
1699# ifdef PERL_MEM_LOG_NOIMPL
1700 " PERL_MEM_LOG_NOIMPL"
1701# endif
c3cf41ec
NC		 1702# ifdef PERL_PRESERVE_IVUV
1703 " PERL_PRESERVE_IVUV"
1704# endif
c051e30b
NC		 1705# ifdef PERL_RELOCATABLE_INCPUSH
1706 " PERL_RELOCATABLE_INCPUSH"
1707# endif
4a5df386
NC		 1708# ifdef PERL_USE_DEVEL
1709 " PERL_USE_DEVEL"
1710# endif
1711# ifdef PERL_USE_SAFE_PUTENV
1712 " PERL_USE_SAFE_PUTENV"
1713# endif
a3749cf3
NC		 1714# ifdef UNLINK_ALL_VERSIONS
1715 " UNLINK_ALL_VERSIONS"
1716# endif
de618ee4
NC		 1717# ifdef USE_ATTRIBUTES_FOR_PERLIO
1718 " USE_ATTRIBUTES_FOR_PERLIO"
1719# endif
4a5df386
NC		 1720# ifdef USE_FAST_STDIO
1721 " USE_FAST_STDIO"
1722# endif
98548bdf
NC		 1723# ifdef USE_LOCALE
1724 " USE_LOCALE"
1725# endif
98548bdf
NC		 1726# ifdef USE_LOCALE_CTYPE
1727 " USE_LOCALE_CTYPE"
1728# endif
5a8d8935
NC		 1729# ifdef USE_PERL_ATOF
1730 " USE_PERL_ATOF"
1731# endif
0d311fbe
NC		 1732# ifdef USE_SITECUSTOMIZE
1733 " USE_SITECUSTOMIZE"
1734# endif
4a5df386
NC		 1735 ;
1736 PERL_UNUSED_ARG(cv);
1737 PERL_UNUSED_ARG(items);
1738
1739 EXTEND(SP, entries);
1740
1741 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1742 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1743 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1744
1745#ifdef __DATE__
1746# ifdef __TIME__
1747 PUSHs(Perl_newSVpvn_flags(aTHX_
1748 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1749 SVs_TEMP));
1750# else
1751 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1752 SVs_TEMP));
1753# endif
1754#else
1755 PUSHs(&PL_sv_undef);
1756#endif
1757
4a5df386
NC		 1758 for (i = 1; i <= local_patch_count; i++) {
1759 /* This will be an undef, if PL_localpatches[i] is NULL. */
1760 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1761 }
1762
1763 XSRETURN(entries);
1764}
1765
be71fc8f
NC		 1766#define INCPUSH_UNSHIFT 0x01
1767#define INCPUSH_ADD_OLD_VERS 0x02
1768#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1769#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1770#define INCPUSH_NOT_BASEDIR 0x10
1771#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC		 1772#define INCPUSH_ADD_SUB_DIRS \
1773 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1774
312caa8e 1775STATIC void *
14dd3ad8 1776S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1777{
27da23d5 1778 dVAR;
2f9285f8 1779 PerlIO *rsfp;
312caa8e 1780 int argc = PL_origargc;
8f42b153 1781 char **argv = PL_origargv;
e1ec3a88 1782 const char *scriptname = NULL;
312caa8e 1783 VOL bool dosearch = FALSE;
eb578fdb 1784 char c;
737c24fc 1785 bool doextract = FALSE;
bd61b366 1786 const char *cddir = NULL;
ab019eaa 1787#ifdef USE_SITECUSTOMIZE
20ef40cf 1788 bool minus_f = FALSE;
ab019eaa 1789#endif
95670bde 1790 SV *linestr_sv = NULL;
5486870f 1791 bool add_read_e_script = FALSE;
87606032 1792 U32 lex_start_flags = 0;
009d90df 1793
ca7b837b 1794 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1795
6224f72b 1796 init_main_stash();
54310121 1797
c7030b81
NC		 1798 {
1799 const char *s;
6224f72b
GS		 1800 for (argc--,argv++; argc > 0; argc--,argv++) {
1801 if (argv[0][0] != '-' || !argv[0][1])
1802 break;
6224f72b
GS		 1803 s = argv[0]+1;
1804 reswitch:
47f56822 1805 switch ((c = *s)) {
729a02f2 1806 case 'C':
1d5472a9
GS		 1807#ifndef PERL_STRICT_CR
1808 case '\r':
1809#endif
6224f72b
GS		 1810 case ' ':
1811 case '0':
1812 case 'F':
1813 case 'a':
1814 case 'c':
1815 case 'd':
1816 case 'D':
1817 case 'h':
1818 case 'i':
1819 case 'l':
1820 case 'M':
1821 case 'm':
1822 case 'n':
1823 case 'p':
1824 case 's':
1825 case 'u':
1826 case 'U':
1827 case 'v':
599cee73
PM		 1828 case 'W':
1829 case 'X':
6224f72b 1830 case 'w':
97bd5664 1831 if ((s = moreswitches(s)))
6224f72b
GS		 1832 goto reswitch;
1833 break;
33b78306 1834
1dbad523 1835 case 't':
22f7c9c9 1836 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS		 1837 if( !PL_tainting ) {
1838 PL_taint_warn = TRUE;
1839 PL_tainting = TRUE;
1840 }
1841 s++;
1842 goto reswitch;
6224f72b 1843 case 'T':
22f7c9c9 1844 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1845 PL_tainting = TRUE;
317ea90d 1846 PL_taint_warn = FALSE;
6224f72b
GS		 1847 s++;
1848 goto reswitch;
f86702cc 1849
bc9b29db
RH		 1850 case 'E':
1851 PL_minus_E = TRUE;
1852 /* FALL THROUGH */
6224f72b 1853 case 'e':
f20b2998 1854 forbid_setid('e', FALSE);
3280af22 1855 if (!PL_e_script) {
396482e1 1856 PL_e_script = newSVpvs("");
5486870f 1857 add_read_e_script = TRUE;
6224f72b
GS		 1858 }
1859 if (*++s)
3280af22 1860 sv_catpv(PL_e_script, s);
6224f72b 1861 else if (argv[1]) {
3280af22 1862 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1863 argc--,argv++;
1864 }
1865 else
47f56822 1866 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1867 sv_catpvs(PL_e_script, "\n");
6224f72b 1868 break;
afe37c7d 1869
20ef40cf 1870 case 'f':
f5542d3a 1871#ifdef USE_SITECUSTOMIZE
20ef40cf 1872 minus_f = TRUE;
f5542d3a 1873#endif
20ef40cf
GA		 1874 s++;
1875 goto reswitch;
1876
6224f72b 1877 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1878 forbid_setid('I', FALSE);
bd61b366 1879 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS		 1880 argc--,argv++;
1881 }
6224f72b 1882 if (s && *s) {
0df16ed7 1883 STRLEN len = strlen(s);
55b4bc1c 1884 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS		 1885 }
1886 else
a67e862a 1887 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1888 break;
6224f72b 1889 case 'S':
f20b2998 1890 forbid_setid('S', FALSE);
6224f72b
GS		 1891 dosearch = TRUE;
1892 s++;
1893 goto reswitch;
1894 case 'V':
7edfd0ef
NC		 1895 {
1896 SV *opts_prog;
1897
7edfd0ef 1898 if (*++s != ':') {
37ca4a5b 1899 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC		 1900 }
1901 else {
1902 ++s;
1903 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1904 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC		 1905 0, s, 0);
1906 s += strlen(s);
1907 }
37ca4a5b 1908 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC		 1909 /* don't look for script or read stdin */
1910 scriptname = BIT_BUCKET;
1911 goto reswitch;
6224f72b 1912 }
6224f72b 1913 case 'x':
737c24fc 1914 doextract = TRUE;
6224f72b 1915 s++;
304334da 1916 if (*s)
f4c556ac 1917 cddir = s;
6224f72b
GS		 1918 break;
1919 case 0:
1920 break;
1921 case '-':
1922 if (!*++s || isSPACE(*s)) {
1923 argc--,argv++;
1924 goto switch_end;
1925 }
ee8bc8b7
NC		 1926 /* catch use of gnu style long options.
1927 Both of these exit immediately. */
1928 if (strEQ(s, "version"))
1929 minus_v();
1930 if (strEQ(s, "help"))
1931 usage();
6224f72b
GS		 1932 s--;
1933 /* FALL THROUGH */
1934 default:
cea2e8a9 1935 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1936 }
1937 }
c7030b81
NC		 1938 }
1939
6224f72b 1940 switch_end:
54310121 1941
c7030b81
NC		 1942 {
1943 char *s;
1944
f675dbe5
CB		 1945 if (
1946#ifndef SECURE_INTERNAL_GETENV
1947 !PL_tainting &&
1948#endif
cf756827 1949 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1950 {
74288ac8
GS		 1951 while (isSPACE(*s))
1952 s++;
317ea90d 1953 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1954 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1955 PL_tainting = TRUE;
317ea90d
MS		 1956 PL_taint_warn = FALSE;
1957 }
74288ac8 1958 else {
bd61b366 1959 char *popt_copy = NULL;
74288ac8 1960 while (s && *s) {
54913509 1961 const char *d;
74288ac8
GS		 1962 while (isSPACE(*s))
1963 s++;
1964 if (*s == '-') {
1965 s++;
1966 if (isSPACE(*s))
1967 continue;
1968 }
4ea8f8fb 1969 d = s;
74288ac8
GS		 1970 if (!*s)
1971 break;
2b622f1a 1972 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1973 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1974 while (++s && *s) {
1975 if (isSPACE(*s)) {
cf756827 1976 if (!popt_copy) {
bfa6c418
NC		 1977 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1978 s = popt_copy + (s - d);
1979 d = popt_copy;
cf756827 1980 }
4ea8f8fb
MS		 1981 *s++ = '\0';
1982 break;
1983 }
1984 }
1c4db469 1985 if (*d == 't') {
317ea90d
MS		 1986 if( !PL_tainting ) {
1987 PL_taint_warn = TRUE;
1988 PL_tainting = TRUE;
1989 }
1c4db469 1990 } else {
97bd5664 1991 moreswitches(d);
1c4db469 1992 }
6224f72b 1993 }
6224f72b
GS		 1994 }
1995 }
c7030b81 1996 }
a0d0e21e 1997
c29067d7
CH		 1998 /* Set $^X early so that it can be used for relocatable paths in @INC */
1999 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2000 assert (!PL_tainted);
2001 TAINT;
2002 S_set_caret_X(aTHX);
2003 TAINT_NOT;
2004
43c0c913 2005#if defined(USE_SITECUSTOMIZE)
20ef40cf 2006 if (!minus_f) {
43c0c913 2007 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC		 2008 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2009 ie a q() operator with a NUL byte as a the delimiter. This avoids
2010 problems with pathnames containing (say) ' */
43c0c913
NC		 2011# ifdef PERL_IS_MINIPERL
2012 AV *const inc = GvAV(PL_incgv);
2013 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2014
2015 if (inc0) {
2016 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2017 Perl_newSVpvf(aTHX_
fc81b718
NC		 2018 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2019 0, *inc0, 0,
2020 0, *inc0, 0));
43c0c913
NC		 2021 }
2022# else
2023 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2024 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD		 2025 if (raw_sitelib) {
2026 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2027 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2028 INCPUSH_CAN_RELOCATE);
2029 const char *const sitelib = SvPVX(sitelib_sv);
2030 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2031 Perl_newSVpvf(aTHX_
2032 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2033 0, sitelib, 0,
2034 0, sitelib, 0));
2035 assert (SvREFCNT(sitelib_sv) == 1);
2036 SvREFCNT_dec(sitelib_sv);
2037 }
43c0c913 2038# endif
20ef40cf
GA		 2039 }
2040#endif
2041
6224f72b
GS		 2042 if (!scriptname)
2043 scriptname = argv[0];
3280af22 2044 if (PL_e_script) {
6224f72b
GS		 2045 argc++,argv--;
2046 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2047 }
bd61b366 2048 else if (scriptname == NULL) {
6224f72b
GS		 2049#ifdef MSDOS
2050 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2051 moreswitches("h");
6224f72b
GS		 2052#endif
2053 scriptname = "-";
2054 }
2055
b7975bdd 2056 assert (!PL_tainted);
2cace6ac 2057 init_perllib();
6224f72b 2058
a52eba0e 2059 {
f20b2998 2060 bool suidscript = FALSE;
829372d3 2061
8d113837 2062 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC		 2063 if (!rsfp) {
2064 rsfp = PerlIO_stdin();
87606032 2065 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2066 }
6224f72b 2067
b24bc095 2068 validate_suid(rsfp);
6224f72b 2069
64ca3a65 2070#ifndef PERL_MICRO
a52eba0e
NC		 2071# if defined(SIGCHLD) || defined(SIGCLD)
2072 {
2073# ifndef SIGCHLD
2074# define SIGCHLD SIGCLD
2075# endif
2076 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2077 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC		 2078 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2079 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC		 2080 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2081 }
0b5b802d 2082 }
a52eba0e 2083# endif
64ca3a65 2084#endif
0b5b802d 2085
737c24fc 2086 if (doextract) {
faef540c 2087
f20b2998 2088 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC		 2089 setuid scripts. */
2090 forbid_setid('x', suidscript);
f20b2998 2091 /* Hence you can't get here if suidscript is true */
faef540c 2092
95670bde
NC		 2093 linestr_sv = newSV_type(SVt_PV);
2094 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2095 find_beginning(linestr_sv, rsfp);
a52eba0e
NC		 2096 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2097 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2098 }
f4c556ac 2099 }
6224f72b 2100
ea726b52 2101 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS		 2102 CvUNIQUE_on(PL_compcv);
2103
dd2155a4 2104 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2105
dd69841b
BB		 2106 PL_isarev = newHV();
2107
0c4f7ff0 2108 boot_core_PerlIO();
6224f72b 2109 boot_core_UNIVERSAL();
e1a479c5 2110 boot_core_mro();
4a5df386 2111 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS		 2112
2113 if (xsinit)
acfe0abc 2114 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2115#ifndef PERL_MICRO
d0d72822 2116#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2117 init_os_extras();
6224f72b 2118#endif
64ca3a65 2119#endif
6224f72b 2120
29209bc5 2121#ifdef USE_SOCKS
1b9c9cf5
DH		 2122# ifdef HAS_SOCKS5_INIT
2123 socks5_init(argv[0]);
2124# else
29209bc5 2125 SOCKSinit(argv[0]);
1b9c9cf5 2126# endif
ac27b0f5 2127#endif
29209bc5 2128
6224f72b
GS		 2129 init_predump_symbols();
2130 /* init_postdump_symbols not currently designed to be called */
2131 /* more than once (ENV isn't cleared first, for example) */
2132 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2133 if (!PL_do_undump)
6224f72b
GS		 2134 init_postdump_symbols(argc,argv,env);
2135
27da23d5
JH		 2136 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2137 * or explicitly in some platforms.
085a54d9 2138 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2139 * look like the user wants to use UTF-8. */
a0fd4948 2140#if defined(__SYMBIAN32__)
27da23d5
JH		 2141 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2142#endif
e27b5b51 2143# ifndef PERL_IS_MINIPERL
06e66572
JH		 2144 if (PL_unicode) {
2145 /* Requires init_predump_symbols(). */
a05d7ebb 2146 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH		 2147 IO* io;
2148 PerlIO* fp;
2149 SV* sv;
2150
a05d7ebb 2151 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2152 * and the default open disciplines. */
a05d7ebb
JH		 2153 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2154 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2155 (fp = IoIFP(io)))
2156 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2157 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2158 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2159 (fp = IoOFP(io)))
2160 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2161 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2162 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2163 (fp = IoOFP(io)))
2164 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2165 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC		 2166 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2167 SVt_PV)))) {
a05d7ebb
JH		 2168 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2169 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2170 if (in) {
2171 if (out)
76f68e9b 2172 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2173 else
76f68e9b 2174 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH		 2175 }
2176 else if (out)
76f68e9b 2177 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH		 2178 SvSETMAGIC(sv);
2179 }
b310b053
JH		 2180 }
2181 }
e27b5b51 2182#endif
b310b053 2183
c7030b81
NC		 2184 {
2185 const char *s;
4ffa73a3
JH		 2186 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2187 if (strEQ(s, "unsafe"))
2188 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2189 else if (strEQ(s, "safe"))
2190 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2191 else
2192 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2193 }
c7030b81 2194 }
4ffa73a3 2195
81d86705 2196#ifdef PERL_MAD
c7030b81
NC		 2197 {
2198 const char *s;
2cc12391
TC		 2199 if (!PL_tainting &&
2200 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC		 2201 PL_madskills = 1;
2202 PL_minus_c = 1;
2203 if (!s || !s[0])
2204 PL_xmlfp = PerlIO_stdout();
2205 else {
2206 PL_xmlfp = PerlIO_open(s, "w");
2207 if (!PL_xmlfp)
2208 Perl_croak(aTHX_ "Can't open %s", s);
2209 }
1a9a51d4 2210 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2211 }
c7030b81
NC		 2212 }
2213
2214 {
2215 const char *s;
81d86705
NC		 2216 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2217 PL_madskills = atoi(s);
1a9a51d4 2218 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2219 }
c7030b81 2220 }
81d86705
NC		 2221#endif
2222
87606032 2223 lex_start(linestr_sv, rsfp, lex_start_flags);
95670bde
NC		 2224 if(linestr_sv)
2225 SvREFCNT_dec(linestr_sv);
2226
219f7226 2227 PL_subname = newSVpvs("main");
6224f72b 2228
5486870f
DM		 2229 if (add_read_e_script)
2230 filter_add(read_e_script, NULL);
2231
6224f72b
GS		 2232 /* now parse the script */
2233
93189314 2234 SETERRNO(0,SS_NORMAL);
28ac2b49 2235 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2236 if (PL_minus_c)
cea2e8a9 2237 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2238 else {
cea2e8a9 2239 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2240 PL_origfilename);
6224f72b
GS		 2241 }
2242 }
57843af0 2243 CopLINE_set(PL_curcop, 0);
03d9f026 2244 SET_CURSTASH(PL_defstash);
3280af22
NIS		 2245 if (PL_e_script) {
2246 SvREFCNT_dec(PL_e_script);
a0714e2c 2247 PL_e_script = NULL;
6224f72b
GS		 2248 }
2249
3280af22 2250 if (PL_do_undump)
6224f72b
GS		 2251 my_unexec();
2252
57843af0
GS		 2253 if (isWARN_ONCE) {
2254 SAVECOPFILE(PL_curcop);
2255 SAVECOPLINE(PL_curcop);
3280af22 2256 gv_check(PL_defstash);
57843af0 2257 }
6224f72b
GS		 2258
2259 LEAVE;
2260 FREETMPS;
2261
2262#ifdef MYMALLOC
f6a607bc
RGS		 2263 {
2264 const char *s;
6224f72b
GS		 2265 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2266 dump_mstats("after compilation:");
f6a607bc 2267 }
6224f72b
GS		 2268#endif
2269
2270 ENTER;
febb3a6d 2271 PL_restartjmpenv = NULL;
3280af22 2272 PL_restartop = 0;
312caa8e 2273 return NULL;
6224f72b
GS		 2274}
2275
954c1994
GS		 2276/*
2277=for apidoc perl_run
2278
2279Tells a Perl interpreter to run. See L<perlembed>.
2280
2281=cut
2282*/
2283
6224f72b 2284int
0cb96387 2285perl_run(pTHXx)
6224f72b 2286{
97aff369 2287 dVAR;
6224f72b 2288 I32 oldscope;
14dd3ad8 2289 int ret = 0;
db36c5a1 2290 dJMPENV;
6224f72b 2291
7918f24d
NC		 2292 PERL_ARGS_ASSERT_PERL_RUN;
2293#ifndef MULTIPLICITY
ed6c66dd 2294 PERL_UNUSED_ARG(my_perl);
7918f24d 2295#endif
9d4ba2ae 2296
3280af22 2297 oldscope = PL_scopestack_ix;
96e176bf
CL		 2298#ifdef VMS
2299 VMSISH_HUSHED = 0;
2300#endif
6224f72b 2301
14dd3ad8 2302 JMPENV_PUSH(ret);
6224f72b
GS		 2303 switch (ret) {
2304 case 1:
2305 cxstack_ix = -1; /* start context stack again */
312caa8e 2306 goto redo_body;
14dd3ad8 2307 case 0: /* normal completion */
14dd3ad8
GS		 2308 redo_body:
2309 run_body(oldscope);
14dd3ad8
GS		 2310 /* FALL THROUGH */
2311 case 2: /* my_exit() */
3280af22 2312 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 2313 LEAVE;
2314 FREETMPS;
03d9f026 2315 SET_CURSTASH(PL_defstash);
3a1ee7e8 2316 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2317 PL_endav && !PL_minus_c) {
ca7b837b 2318 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2319 call_list(oldscope, PL_endav);
9ebf26ad 2320 }
6224f72b
GS		 2321#ifdef MYMALLOC
2322 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2323 dump_mstats("after execution: ");
2324#endif
37038d91 2325 ret = STATUS_EXIT;
14dd3ad8 2326 break;
6224f72b 2327 case 3:
312caa8e
CS		 2328 if (PL_restartop) {
2329 POPSTACK_TO(PL_mainstack);
2330 goto redo_body;
6224f72b 2331 }
5637ef5b 2332 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2333 FREETMPS;
14dd3ad8
GS		 2334 ret = 1;
2335 break;
6224f72b
GS		 2336 }
2337
14dd3ad8
GS		 2338 JMPENV_POP;
2339 return ret;
312caa8e
CS		 2340}
2341
dd374669 2342STATIC void
14dd3ad8
GS		 2343S_run_body(pTHX_ I32 oldscope)
2344{
97aff369 2345 dVAR;
6224f72b 2346 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2347 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2348
3280af22 2349 if (!PL_restartop) {
81d86705
NC		 2350#ifdef PERL_MAD
2351 if (PL_xmlfp) {
2352 xmldump_all();
2353 exit(0); /* less likely to core dump than my_exit(0) */
2354 }
2355#endif
cf2782cd 2356#ifdef DEBUGGING
f0e3f042
CS		 2357 if (DEBUG_x_TEST || DEBUG_B_TEST)
2358 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC		 2359 if (!DEBUG_q_TEST)
2360 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2361#endif
6224f72b 2362
3280af22 2363 if (PL_minus_c) {
bf49b057 2364 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS		 2365 my_exit(0);
2366 }
3280af22 2367 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2368 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2369 if (PL_initav) {
ca7b837b 2370 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2371 call_list(oldscope, PL_initav);
9ebf26ad 2372 }
f1fac472 2373#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC		 2374 if (PL_main_root && PL_main_root->op_slabbed)
2375 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2376#endif
6224f72b
GS		 2377 }
2378
2379 /* do it */
2380
ca7b837b 2381 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2382
3280af22 2383 if (PL_restartop) {
febb3a6d 2384 PL_restartjmpenv = NULL;
533c011a 2385 PL_op = PL_restartop;
3280af22 2386 PL_restartop = 0;
cea2e8a9 2387 CALLRUNOPS(aTHX);
6224f72b 2388 }
3280af22
NIS		 2389 else if (PL_main_start) {
2390 CvDEPTH(PL_main_cv) = 1;
533c011a 2391 PL_op = PL_main_start;
cea2e8a9 2392 CALLRUNOPS(aTHX);
6224f72b 2393 }
f6b3007c 2394 my_exit(0);
118e2215 2395 assert(0); /* NOTREACHED */
6224f72b
GS		 2396}
2397
954c1994 2398/*
ccfc67b7
JH		 2399=head1 SV Manipulation Functions
2400
954c1994
GS		 2401=for apidoc p||get_sv
2402
64ace3f8
NC		 2403Returns the SV of the specified Perl scalar. C<flags> are passed to
2404C<gv_fetchpv>. If C<GV_ADD> is set and the
2405Perl variable does not exist then it will be created. If C<flags> is zero
2406and the variable does not exist then NULL is returned.
954c1994
GS		 2407
2408=cut
2409*/
2410
6224f72b 2411SV*
64ace3f8 2412Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS		 2413{
2414 GV *gv;
7918f24d
NC		 2415
2416 PERL_ARGS_ASSERT_GET_SV;
2417
64ace3f8 2418 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS		 2419 if (gv)
2420 return GvSV(gv);
a0714e2c 2421 return NULL;
6224f72b
GS		 2422}
2423
954c1994 2424/*
ccfc67b7
JH		 2425=head1 Array Manipulation Functions
2426
954c1994
GS		 2427=for apidoc p||get_av
2428
f0b90de1
SF		 2429Returns the AV of the specified Perl global or package array with the given
2430name (so it won't work on lexical variables). C<flags> are passed
2431to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC		 2432Perl variable does not exist then it will be created. If C<flags> is zero
2433and the variable does not exist then NULL is returned.
954c1994 2434
f0b90de1
SF		 2435Perl equivalent: C<@{"$name"}>.
2436
954c1994
GS		 2437=cut
2438*/
2439
6224f72b 2440AV*
cbfd0a87 2441Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2442{
cbfd0a87 2443 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC		 2444
2445 PERL_ARGS_ASSERT_GET_AV;
2446
cbfd0a87 2447 if (flags)
6224f72b
GS		 2448 return GvAVn(gv);
2449 if (gv)
2450 return GvAV(gv);
7d49f689 2451 return NULL;
6224f72b
GS		 2452}
2453
954c1994 2454/*
ccfc67b7
JH		 2455=head1 Hash Manipulation Functions
2456
954c1994
GS		 2457=for apidoc p||get_hv
2458
6673a63c
NC		 2459Returns the HV of the specified Perl hash. C<flags> are passed to
2460C<gv_fetchpv>. If C<GV_ADD> is set and the
2461Perl variable does not exist then it will be created. If C<flags> is zero
2462and the variable does not exist then NULL is returned.
954c1994
GS		 2463
2464=cut
2465*/
2466
6224f72b 2467HV*
6673a63c 2468Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2469{
6673a63c 2470 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC		 2471
2472 PERL_ARGS_ASSERT_GET_HV;
2473
6673a63c 2474 if (flags)
a0d0e21e
LW		 2475 return GvHVn(gv);
2476 if (gv)
2477 return GvHV(gv);
5c284bb0 2478 return NULL;
a0d0e21e
LW		 2479}
2480
954c1994 2481/*
ccfc67b7
JH		 2482=head1 CV Manipulation Functions
2483
780a5241
NC		 2484=for apidoc p||get_cvn_flags
2485
2486Returns the CV of the specified Perl subroutine. C<flags> are passed to
2487C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2488exist then it will be declared (which has the same effect as saying
2489C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2490then NULL is returned.
2491
954c1994
GS		 2492=for apidoc p||get_cv
2493
780a5241 2494Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS		 2495
2496=cut
2497*/
2498
a0d0e21e 2499CV*
780a5241 2500Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2501{
780a5241 2502 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC		 2503
2504 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2505
334dda80
FC		 2506 /* XXX this is probably not what they think they're getting.
2507 * It has the same effect as "sub name;", i.e. just a forward
2508 * declaration! */
780a5241 2509 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2510 return newSTUB(gv,0);
780a5241 2511 }
a0d0e21e 2512 if (gv)
8ebc5c01 2513 return GvCVu(gv);
601f1833 2514 return NULL;
a0d0e21e
LW		 2515}
2516
2c67934f
NC		 2517/* Nothing in core calls this now, but we can't replace it with a macro and
2518 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC		 2519CV*
2520Perl_get_cv(pTHX_ const char *name, I32 flags)
2521{
7918f24d
NC		 2522 PERL_ARGS_ASSERT_GET_CV;
2523
780a5241
NC		 2524 return get_cvn_flags(name, strlen(name), flags);
2525}
2526
79072805
LW		 2527/* Be sure to refetch the stack pointer after calling these routines. */
2528
954c1994 2529/*
ccfc67b7
JH		 2530
2531=head1 Callback Functions
2532
954c1994
GS		 2533=for apidoc p||call_argv
2534
f0b90de1
SF		 2535Performs a callback to the specified named and package-scoped Perl subroutine
2536with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2537
2538Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS		 2539
2540=cut
2541*/
2542
a0d0e21e 2543I32
8f42b153 2544Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2545
8ac85365
NIS		 2546 /* See G_* flags in cop.h */
2547 /* null terminated arg list */
8990e307 2548{
97aff369 2549 dVAR;
a0d0e21e 2550 dSP;
8990e307 2551
7918f24d
NC		 2552 PERL_ARGS_ASSERT_CALL_ARGV;
2553
924508f0 2554 PUSHMARK(SP);
a0d0e21e 2555 if (argv) {
8990e307 2556 while (*argv) {
6e449a3a 2557 mXPUSHs(newSVpv(*argv,0));
8990e307
LW		 2558 argv++;
2559 }
a0d0e21e 2560 PUTBACK;
8990e307 2561 }
864dbfa3 2562 return call_pv(sub_name, flags);
8990e307
LW		 2563}
2564
954c1994
GS		 2565/*
2566=for apidoc p||call_pv
2567
2568Performs a callback to the specified Perl sub. See L<perlcall>.
2569
2570=cut
2571*/
2572
a0d0e21e 2573I32
864dbfa3 2574Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 2575 /* name of the subroutine */
2576 /* See G_* flags in cop.h */
a0d0e21e 2577{
7918f24d
NC		 2578 PERL_ARGS_ASSERT_CALL_PV;
2579
0da0e728 2580 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW		 2581}
2582
954c1994
GS		 2583/*
2584=for apidoc p||call_method
2585
2586Performs a callback to the specified Perl method. The blessed object must
2587be on the stack. See L<perlcall>.
2588
2589=cut
2590*/
2591
a0d0e21e 2592I32
864dbfa3 2593Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 2594 /* name of the subroutine */
2595 /* See G_* flags in cop.h */
a0d0e21e 2596{
46ca9bac 2597 STRLEN len;
7918f24d
NC		 2598 PERL_ARGS_ASSERT_CALL_METHOD;
2599
46ca9bac
GF		 2600 len = strlen(methname);
2601
2602 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2603 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW		 2604}
2605
2606/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 2607/*
2608=for apidoc p||call_sv
2609
2610Performs a callback to the Perl sub whose name is in the SV. See
2611L<perlcall>.
2612
2613=cut
2614*/
2615
a0d0e21e 2616I32
001d637e 2617Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2618 /* See G_* flags in cop.h */
a0d0e21e 2619{
27da23d5 2620 dVAR; dSP;
a0d0e21e 2621 LOGOP myop; /* fake syntax tree node */
968b3946 2622 UNOP method_op;
aa689395 2623 I32 oldmark;
8ea43dc8 2624 VOL I32 retval = 0;
a0d0e21e 2625 I32 oldscope;
54310121 2626 bool oldcatch = CATCH_GET;
6224f72b 2627 int ret;
c4420975 2628 OP* const oldop = PL_op;
db36c5a1 2629 dJMPENV;
1e422769 2630
7918f24d
NC		 2631 PERL_ARGS_ASSERT_CALL_SV;
2632
a0d0e21e
LW		 2633 if (flags & G_DISCARD) {
2634 ENTER;
2635 SAVETMPS;
2636 }
2f8edad0
NC		 2637 if (!(flags & G_WANT)) {
2638 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2639 */
2640 flags |= G_SCALAR;
2641 }
a0d0e21e 2642
aa689395 2643 Zero(&myop, 1, LOGOP);
f51d4af5 2644 if (!(flags & G_NOARGS))
aa689395 2645 myop.op_flags |= OPf_STACKED;
4f911530 2646 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2647 SAVEOP();
533c011a 2648 PL_op = (OP*)&myop;
aa689395 2649
3280af22
NIS		 2650 EXTEND(PL_stack_sp, 1);
2651 *++PL_stack_sp = sv;
aa689395 2652 oldmark = TOPMARK;
3280af22 2653 oldscope = PL_scopestack_ix;
a0d0e21e 2654
3280af22 2655 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2656 /* Handle first BEGIN of -d. */
3280af22 2657 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 2658 /* Try harder, since this may have been a sighandler, thus
2659 * curstash may be meaningless. */
ea726b52 2660 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2661 && !(flags & G_NODEBUG))
5ff48db8 2662 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2663
968b3946
GS		 2664 if (flags & G_METHOD) {
2665 Zero(&method_op, 1, UNOP);
5ff48db8 2666 method_op.op_next = (OP*)&myop;
968b3946 2667 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2668 method_op.op_type = OP_METHOD;
968b3946 2669 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2670 myop.op_type = OP_ENTERSUB;
f39d0b86 2671 PL_op = (OP*)&method_op;
968b3946
GS		 2672 }
2673
312caa8e 2674 if (!(flags & G_EVAL)) {
0cdb2077 2675 CATCH_SET(TRUE);
d6f07c05 2676 CALL_BODY_SUB((OP*)&myop);
312caa8e 2677 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2678 CATCH_SET(oldcatch);
312caa8e
CS		 2679 }
2680 else {
d78bda3d 2681 myop.op_other = (OP*)&myop;
3280af22 2682 PL_markstack_ptr--;
edb2152a 2683 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2684 PL_markstack_ptr++;
a0d0e21e 2685
14dd3ad8 2686 JMPENV_PUSH(ret);
edb2152a 2687
6224f72b
GS		 2688 switch (ret) {
2689 case 0:
14dd3ad8 2690 redo_body:
d6f07c05 2691 CALL_BODY_SUB((OP*)&myop);
312caa8e 2692 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2693 if (!(flags & G_KEEPERR)) {
ab69dbc2 2694 CLEAR_ERRSV();
8433848b 2695 }
a0d0e21e 2696 break;
6224f72b 2697 case 1:
f86702cc 2698 STATUS_ALL_FAILURE;
a0d0e21e 2699 /* FALL THROUGH */
6224f72b 2700 case 2:
a0d0e21e 2701 /* my_exit() was called */
03d9f026 2702 SET_CURSTASH(PL_defstash);
a0d0e21e 2703 FREETMPS;
14dd3ad8 2704 JMPENV_POP;
f86702cc 2705 my_exit_jump();
118e2215 2706 assert(0); /* NOTREACHED */
6224f72b 2707 case 3:
3280af22 2708 if (PL_restartop) {
febb3a6d 2709 PL_restartjmpenv = NULL;
533c011a 2710 PL_op = PL_restartop;
3280af22 2711 PL_restartop = 0;
312caa8e 2712 goto redo_body;
a0d0e21e 2713 }
3280af22 2714 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2715 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW		 2716 retval = 0;
2717 else {
2718 retval = 1;
3280af22 2719 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2720 }
312caa8e 2721 break;
a0d0e21e 2722 }
a0d0e21e 2723
edb2152a
NC		 2724 if (PL_scopestack_ix > oldscope)
2725 delete_eval_scope();
14dd3ad8 2726 JMPENV_POP;
a0d0e21e 2727 }
1e422769 2728
a0d0e21e 2729 if (flags & G_DISCARD) {
3280af22 2730 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 2731 retval = 0;
2732 FREETMPS;
2733 LEAVE;
2734 }
533c011a 2735 PL_op = oldop;
a0d0e21e
LW		 2736 return retval;
2737}
2738
6e72f9df 2739/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2740
954c1994
GS		 2741/*
2742=for apidoc p||eval_sv
2743
be064c4a
DM		 2744Tells Perl to C<eval> the string in the SV. It supports the same flags
2745as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS		 2746
2747=cut
2748*/
2749
a0d0e21e 2750I32
864dbfa3 2751Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2752
8ac85365 2753 /* See G_* flags in cop.h */
a0d0e21e 2754{
97aff369 2755 dVAR;
924508f0 2756 dSP;
a0d0e21e 2757 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP		 2758 VOL I32 oldmark = SP - PL_stack_base;
2759 VOL I32 retval = 0;
6224f72b 2760 int ret;
c4420975 2761 OP* const oldop = PL_op;
db36c5a1 2762 dJMPENV;
84902520 2763
7918f24d
NC		 2764 PERL_ARGS_ASSERT_EVAL_SV;
2765
4633a7c4
LW		 2766 if (flags & G_DISCARD) {
2767 ENTER;
2768 SAVETMPS;
2769 }
2770
462e5cf6 2771 SAVEOP();
533c011a 2772 PL_op = (OP*)&myop;
5ff48db8 2773 Zero(&myop, 1, UNOP);
3280af22
NIS		 2774 EXTEND(PL_stack_sp, 1);
2775 *++PL_stack_sp = sv;
79072805 2776
4633a7c4
LW		 2777 if (!(flags & G_NOARGS))
2778 myop.op_flags = OPf_STACKED;
6e72f9df 2779 myop.op_type = OP_ENTEREVAL;
4f911530 2780 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df 2781 if (flags & G_KEEPERR)
2782 myop.op_flags |= OPf_SPECIAL;
d24ca0c5
DM		 2783 if (PL_reg_state.re_reparsing)
2784 myop.op_private = OPpEVAL_COPHH;
4633a7c4 2785
dedbcade
DM		 2786 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2787 * before a PUSHEVAL, which corrupts the stack after a croak */
2788 TAINT_PROPER("eval_sv()");
2789
14dd3ad8 2790 JMPENV_PUSH(ret);
6224f72b
GS		 2791 switch (ret) {
2792 case 0:
14dd3ad8 2793 redo_body:
2ba65d5f
DM		 2794 if (PL_op == (OP*)(&myop)) {
2795 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2796 if (!PL_op)
2797 goto fail; /* failed in compilation */
2798 }
4aca2f62 2799 CALLRUNOPS(aTHX);
312caa8e 2800 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2801 if (!(flags & G_KEEPERR)) {
ab69dbc2 2802 CLEAR_ERRSV();
8433848b 2803 }
4633a7c4 2804 break;
6224f72b 2805 case 1:
f86702cc 2806 STATUS_ALL_FAILURE;
4633a7c4 2807 /* FALL THROUGH */
6224f72b 2808 case 2:
4633a7c4 2809 /* my_exit() was called */
03d9f026 2810 SET_CURSTASH(PL_defstash);
4633a7c4 2811 FREETMPS;
14dd3ad8 2812 JMPENV_POP;
f86702cc 2813 my_exit_jump();
118e2215 2814 assert(0); /* NOTREACHED */
6224f72b 2815 case 3:
3280af22 2816 if (PL_restartop) {
febb3a6d 2817 PL_restartjmpenv = NULL;
533c011a 2818 PL_op = PL_restartop;
3280af22 2819 PL_restartop = 0;
312caa8e 2820 goto redo_body;
4633a7c4 2821 }
4aca2f62 2822 fail:
3280af22 2823 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2824 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW		 2825 retval = 0;
2826 else {
2827 retval = 1;
3280af22 2828 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2829 }
312caa8e 2830 break;
4633a7c4
LW		 2831 }
2832
14dd3ad8 2833 JMPENV_POP;
4633a7c4 2834 if (flags & G_DISCARD) {
3280af22 2835 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2836 retval = 0;
2837 FREETMPS;
2838 LEAVE;
2839 }
533c011a 2840 PL_op = oldop;
4633a7c4
LW		 2841 return retval;
2842}
2843
954c1994
GS		 2844/*
2845=for apidoc p||eval_pv
2846
2847Tells Perl to C<eval> the given string and return an SV* result.
2848
2849=cut
2850*/
2851
137443ea 2852SV*
864dbfa3 2853Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2854{
97aff369 2855 dVAR;
137443ea 2856 dSP;
2857 SV* sv = newSVpv(p, 0);
2858
7918f24d
NC		 2859 PERL_ARGS_ASSERT_EVAL_PV;
2860
864dbfa3 2861 eval_sv(sv, G_SCALAR);
137443ea 2862 SvREFCNT_dec(sv);
2863
2864 SPAGAIN;
2865 sv = POPs;
2866 PUTBACK;
2867
2d8e6c8d 2868 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2869 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2870 }
137443ea 2871
2872 return sv;
2873}
2874
4633a7c4
LW		 2875/* Require a module. */
2876
954c1994 2877/*
ccfc67b7
JH		 2878=head1 Embedding Functions
2879
954c1994
GS		 2880=for apidoc p||require_pv
2881
7d3fb230
BS		 2882Tells Perl to C<require> the file named by the string argument. It is
2883analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2884implemented that way; consider using load_module instead.
954c1994 2885
7d3fb230 2886=cut */
954c1994 2887
4633a7c4 2888void
864dbfa3 2889Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2890{
97aff369 2891 dVAR;
d3acc0f7 2892 dSP;
97aff369 2893 SV* sv;
7918f24d
NC		 2894
2895 PERL_ARGS_ASSERT_REQUIRE_PV;
2896
e788e7d3 2897 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2898 PUTBACK;
be41e5d9
NC		 2899 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2900 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP		 2901 SPAGAIN;
2902 POPSTACK;
79072805
LW		 2903}
2904
76e3520e 2905STATIC void
b6f82619 2906S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2907{
ab821d7f 2908 /* This message really ought to be max 23 lines.
75c72d73 2909 * Removed -h because the user already knows that option. Others? */
fb73857a 2910
1566c39d
NC		 2911 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2912 minimum of 509 character string literals. */
27da23d5 2913 static const char * const usage_msg[] = {
1566c39d
NC		 2914" -0[octal] specify record separator (\\0, if no argument)\n"
2915" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2916" -C[number/list] enables the listed Unicode features\n"
2917" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2918" -d[:debugger] run program under debugger\n"
2919" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2920" -e program one line of program (several -e's allowed, omit programfile)\n"
2921" -E program like -e, but enables all optional features\n"
2922" -f don't do $sitelib/sitecustomize.pl at startup\n"
2923" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2924" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2925" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2926" -l[octal] enable line ending processing, specifies line terminator\n"
2927" -[mM][-]module execute \"use/no module...\" before executing program\n"
2928" -n assume \"while (<>) { ... }\" loop around program\n"
2929" -p assume loop like -n but print line also, like sed\n"
2930" -s enable rudimentary parsing for switches after programfile\n"
2931" -S look for programfile using PATH environment variable\n",
2932" -t enable tainting warnings\n"
2933" -T enable tainting checks\n"
2934" -u dump core after parsing program\n"
2935" -U allow unsafe operations\n"
2936" -v print version, patchlevel and license\n"
2937" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2938" -w enable many useful warnings\n"
1566c39d
NC		 2939" -W enable all warnings\n"
2940" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2941" -X disable all warnings\n"
2942" \n"
2943"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a 2944NULL
2945};
27da23d5 2946 const char * const *p = usage_msg;
1566c39d 2947 PerlIO *out = PerlIO_stdout();
fb73857a 2948
1566c39d
NC		 2949 PerlIO_printf(out,
2950 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2951 PL_origargv[0]);
fb73857a 2952 while (*p)
1566c39d 2953 PerlIO_puts(out, *p++);
b6f82619 2954 my_exit(0);
4633a7c4
LW		 2955}
2956
b4ab917c
DM		 2957/* convert a string of -D options (or digits) into an int.
2958 * sets *s to point to the char after the options */
2959
2960#ifdef DEBUGGING
2961int
e1ec3a88 2962Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2963{
27da23d5 2964 static const char * const usage_msgd[] = {
651b8f1a
NC		 2965 " Debugging flag values: (see also -d)\n"
2966 " p Tokenizing and parsing (with v, displays parse stack)\n"
2967 " s Stack snapshots (with v, displays all stacks)\n"
2968 " l Context (loop) stack processing\n"
2969 " t Trace execution\n"
2970 " o Method and overloading resolution\n",
2971 " c String/numeric conversions\n"
2972 " P Print profiling info, source file input state\n"
2973 " m Memory and SV allocation\n"
2974 " f Format processing\n"
2975 " r Regular expression parsing and execution\n"
2976 " x Syntax tree dump\n",
2977 " u Tainting checks\n"
2978 " H Hash dump -- usurps values()\n"
2979 " X Scratchpad allocation\n"
2980 " D Cleaning up\n"
56967202 2981 " S Op slab allocation\n"
651b8f1a
NC		 2982 " T Tokenising\n"
2983 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2984 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2985 " v Verbose: use in conjunction with other flags\n"
2986 " C Copy On Write\n"
2987 " A Consistency checks on internal structures\n"
2988 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2989 " M trace smart match resolution\n"
2990 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC		 2991 NULL
2992 };
b4ab917c 2993 int i = 0;
7918f24d
NC		 2994
2995 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2996
b4ab917c
DM		 2997 if (isALPHA(**s)) {
2998 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2999 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM		 3000
3001 for (; isALNUM(**s); (*s)++) {
c4420975 3002 const char * const d = strchr(debopts,**s);
b4ab917c
DM		 3003 if (d)
3004 i |= 1 << (d - debopts);
3005 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC		 3006 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3007 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM		 3008 }
3009 }
e6e64d9b 3010 else if (isDIGIT(**s)) {
b4ab917c
DM		 3011 i = atoi(*s);
3012 for (; isALNUM(**s); (*s)++) ;
3013 }
ddcf8bc1 3014 else if (givehelp) {
06e869a4 3015 const char *const *p = usage_msgd;
651b8f1a 3016 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3017 }
b4ab917c
DM		 3018# ifdef EBCDIC
3019 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3020 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3021 "-Dp not implemented on this platform\n");
3022# endif
3023 return i;
3024}
3025#endif
3026
79072805
LW		 3027/* This routine handles any switches that can be given during run */
3028
c7030b81
NC		 3029const char *
3030Perl_moreswitches(pTHX_ const char *s)
79072805 3031{
27da23d5 3032 dVAR;
84c133a0 3033 UV rschar;
0544e6df 3034 const char option = *s; /* used to remember option in -m/-M code */
79072805 3035
7918f24d
NC		 3036 PERL_ARGS_ASSERT_MORESWITCHES;
3037
79072805
LW		 3038 switch (*s) {
3039 case '0':
a863c7d1 3040 {
f2095865 3041 I32 flags = 0;
a3b680e6 3042 STRLEN numlen;
f2095865
JH		 3043
3044 SvREFCNT_dec(PL_rs);
3045 if (s[1] == 'x' && s[2]) {
a3b680e6 3046 const char *e = s+=2;
f2095865
JH		 3047 U8 *tmps;
3048
a3b680e6
AL		 3049 while (*e)
3050 e++;
f2095865
JH		 3051 numlen = e - s;
3052 flags = PERL_SCAN_SILENT_ILLDIGIT;
3053 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3054 if (s + numlen < e) {
3055 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3056 numlen = 0;
3057 s--;
3058 }
396482e1 3059 PL_rs = newSVpvs("");
c5661c80 3060 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH		 3061 tmps = (U8*)SvPVX(PL_rs);
3062 uvchr_to_utf8(tmps, rschar);
3063 SvCUR_set(PL_rs, UNISKIP(rschar));
3064 SvUTF8_on(PL_rs);
3065 }
3066 else {
3067 numlen = 4;
3068 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3069 if (rschar & ~((U8)~0))
3070 PL_rs = &PL_sv_undef;
3071 else if (!rschar && numlen >= 2)
396482e1 3072 PL_rs = newSVpvs("");
f2095865
JH		 3073 else {
3074 char ch = (char)rschar;
3075 PL_rs = newSVpvn(&ch, 1);
3076 }
3077 }
64ace3f8 3078 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3079 return s + numlen;
a863c7d1 3080 }
46487f74 3081 case 'C':
a05d7ebb 3082 s++;
dd374669 3083 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC		 3084 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3085 PL_utf8cache = -1;
46487f74 3086 return s;
2304df62 3087 case 'F':
3280af22 3088 PL_minus_F = TRUE;
ebce5377
RGS		 3089 PL_splitstr = ++s;
3090 while (*s && !isSPACE(*s)) ++s;
e49e380e 3091 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3092 return s;
79072805 3093 case 'a':
3280af22 3094 PL_minus_a = TRUE;
79072805
LW		 3095 s++;
3096 return s;
3097 case 'c':
3280af22 3098 PL_minus_c = TRUE;
79072805
LW		 3099 s++;
3100 return s;
3101 case 'd':
f20b2998 3102 forbid_setid('d', FALSE);
4633a7c4 3103 s++;
2cbb2ee1
RGS		 3104
3105 /* -dt indicates to the debugger that threads will be used */
3106 if (*s == 't' && !isALNUM(s[1])) {
3107 ++s;
3108 my_setenv("PERL5DB_THREADED", "1");
3109 }
3110
70c94a19
RR		 3111 /* The following permits -d:Mod to accepts arguments following an =
3112 in the fashion that -MSome::Mod does. */
3113 if (*s == ':' || *s == '=') {
b19934fb
NC		 3114 const char *start;
3115 const char *end;
3116 SV *sv;
3117
3118 if (*++s == '-') {
3119 ++s;
3120 sv = newSVpvs("no Devel::");
3121 } else {
3122 sv = newSVpvs("use Devel::");
3123 }
3124
3125 start = s;
3126 end = s + strlen(s);
f85893a1 3127
b19934fb 3128 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR		 3129 while(isALNUM(*s) || *s==':') ++s;
3130 if (*s != '=')
f85893a1 3131 sv_catpvn(sv, start, end - start);
70c94a19
RR		 3132 else {
3133 sv_catpvn(sv, start, s-start);
95a2b409
RGS		 3134 /* Don't use NUL as q// delimiter here, this string goes in the
3135 * environment. */
3136 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3137 }
f85893a1 3138 s = end;
184f32ec 3139 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3140 SvREFCNT_dec(sv);
4633a7c4 3141 }
ed094faf 3142 if (!PL_perldb) {
3280af22 3143 PL_perldb = PERLDB_ALL;
a0d0e21e 3144 init_debugger();
ed094faf 3145 }
79072805
LW		 3146 return s;
3147 case 'D':
0453d815 3148 {
79072805 3149#ifdef DEBUGGING
f20b2998 3150 forbid_setid('D', FALSE);
b4ab917c 3151 s++;
dd374669 3152 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3153#else /* !DEBUGGING */
0453d815 3154 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3155 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3156 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3157 for (s++; isALNUM(*s); s++) ;
79072805 3158#endif
79072805 3159 return s;
0453d815 3160 }
4633a7c4 3161 case 'h':
b6f82619 3162 usage();
79072805 3163 case 'i':
43c5f42d 3164 Safefree(PL_inplace);
c030f24b
GH		 3165#if defined(__CYGWIN__) /* do backup extension automagically */
3166 if (*(s+1) == '\0') {
c86a4f2e 3167 PL_inplace = savepvs(".bak");
c030f24b
GH		 3168 return s+1;
3169 }
3170#endif /* __CYGWIN__ */
5ef5d758 3171 {
d4c19fe8 3172 const char * const start = ++s;
5ef5d758
NC		 3173 while (*s && !isSPACE(*s))
3174 ++s;
3175
3176 PL_inplace = savepvn(start, s - start);
3177 }
7b8d334a 3178 if (*s) {
5ef5d758 3179 ++s;
7b8d334a 3180 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3181 s++;
7b8d334a 3182 }
fb73857a 3183 return s;
4e49a025 3184 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3185 forbid_setid('I', FALSE);
fb73857a 3186 ++s;
3187 while (*s && isSPACE(*s))
3188 ++s;
3189 if (*s) {
c7030b81 3190 const char *e, *p;
0df16ed7
GS		 3191 p = s;
3192 /* ignore trailing spaces (possibly followed by other switches) */
3193 do {
3194 for (e = p; *e && !isSPACE(*e); e++) ;
3195 p = e;
3196 while (isSPACE(*p))
3197 p++;
3198 } while (*p && *p != '-');
55b4bc1c 3199 incpush(s, e-s,
e28f3139 3200 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS		 3201 s = p;
3202 if (*s == '-')
3203 s++;
79072805
LW		 3204 }
3205 else
a67e862a 3206 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3207 return s;
79072805 3208 case 'l':
3280af22 3209 PL_minus_l = TRUE;
79072805 3210 s++;
7889fe52
NIS		 3211 if (PL_ors_sv) {
3212 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3213 PL_ors_sv = NULL;
7889fe52 3214 }
79072805 3215 if (isDIGIT(*s)) {
53305cf1 3216 I32 flags = 0;
a3b680e6 3217 STRLEN numlen;
396482e1 3218 PL_ors_sv = newSVpvs("\n");
53305cf1
NC		 3219 numlen = 3 + (*s == '0');
3220 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 3221 s += numlen;
3222 }
3223 else {
8bfdd7d9 3224 if (RsPARA(PL_rs)) {
396482e1 3225 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS		 3226 }
3227 else {
8bfdd7d9 3228 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3229 }
79072805
LW		 3230 }
3231 return s;
1a30305b 3232 case 'M':
f20b2998 3233 forbid_setid('M', FALSE); /* XXX ? */
1a30305b 3234 /* FALL THROUGH */
3235 case 'm':
f20b2998 3236 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3237 if (*++s) {
c7030b81 3238 const char *start;
b64cb68c 3239 const char *end;
11343788 3240 SV *sv;
e1ec3a88 3241 const char *use = "use ";
0544e6df 3242 bool colon = FALSE;
a5f75d66 3243 /* -M-foo == 'no foo' */
d0043bd1
NC		 3244 /* Leading space on " no " is deliberate, to make both
3245 possibilities the same length. */
3246 if (*s == '-') { use = " no "; ++s; }
3247 sv = newSVpvn(use,4);
a5f75d66 3248 start = s;
1a30305b 3249 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB		 3250 while(isALNUM(*s) || *s==':') {
3251 if( *s++ == ':' ) {
3252 if( *s == ':' )
3253 s++;
3254 else
3255 colon = TRUE;
3256 }
3257 }
3258 if (s == start)
3259 Perl_croak(aTHX_ "Module name required with -%c option",
3260 option);
3261 if (colon)
3262 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3263 "contains single ':'",
63da6837 3264 (int)(s - start), start, option);
b64cb68c 3265 end = s + strlen(s);
c07a80fd 3266 if (*s != '=') {
b64cb68c 3267 sv_catpvn(sv, start, end - start);
0544e6df 3268 if (option == 'm') {
c07a80fd 3269 if (*s != '\0')
cea2e8a9 3270 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3271 sv_catpvs( sv, " ()");
c07a80fd 3272 }
3273 } else {
11343788 3274 sv_catpvn(sv, start, s-start);
b64cb68c
NC		 3275 /* Use NUL as q''-delimiter. */
3276 sv_catpvs(sv, " split(/,/,q\0");
3277 ++s;
3278 sv_catpvn(sv, s, end - s);
396482e1 3279 sv_catpvs(sv, "\0)");
c07a80fd 3280 }
b64cb68c 3281 s = end;
29a861e7 3282 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b 3283 }
3284 else
0544e6df 3285 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3286 return s;
79072805 3287 case 'n':
3280af22 3288 PL_minus_n = TRUE;
79072805
LW		 3289 s++;
3290 return s;
3291 case 'p':
3280af22 3292 PL_minus_p = TRUE;
79072805
LW		 3293 s++;
3294 return s;
3295 case 's':
f20b2998 3296 forbid_setid('s', FALSE);
3280af22 3297 PL_doswitches = TRUE;
79072805
LW		 3298 s++;
3299 return s;
6537fe72 3300 case 't':
27a6968b 3301 case 'T':
6537fe72 3302 if (!PL_tainting)
27a6968b 3303 TOO_LATE_FOR(*s);
6537fe72 3304 s++;
463ee0b2 3305 return s;
79072805 3306 case 'u':
3280af22 3307 PL_do_undump = TRUE;
79072805
LW		 3308 s++;
3309 return s;
3310 case 'U':
3280af22 3311 PL_unsafe = TRUE;
79072805
LW		 3312 s++;
3313 return s;
3314 case 'v':
c4bc78d9
NC		 3315 minus_v();
3316 case 'w':
3317 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3318 PL_dowarn |= G_WARN_ON;
3319 }
3320 s++;
3321 return s;
3322 case 'W':
3323 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3324 if (!specialWARN(PL_compiling.cop_warnings))
3325 PerlMemShared_free(PL_compiling.cop_warnings);
3326 PL_compiling.cop_warnings = pWARN_ALL ;
3327 s++;
3328 return s;
3329 case 'X':
3330 PL_dowarn = G_WARN_ALL_OFF;
3331 if (!specialWARN(PL_compiling.cop_warnings))
3332 PerlMemShared_free(PL_compiling.cop_warnings);
3333 PL_compiling.cop_warnings = pWARN_NONE ;
3334 s++;
3335 return s;
3336 case '*':
3337 case ' ':
3338 while( *s == ' ' )
3339 ++s;
3340 if (s[0] == '-') /* Additional switches on #! line. */
3341 return s+1;
3342 break;
3343 case '-':
3344 case 0:
3345#if defined(WIN32) || !defined(PERL_STRICT_CR)
3346 case '\r':
3347#endif
3348 case '\n':
3349 case '\t':
3350 break;
3351#ifdef ALTERNATE_SHEBANG
3352 case 'S': /* OS/2 needs -S on "extproc" line. */
3353 break;
3354#endif
4bb78d63
CB		 3355 case 'e': case 'f': case 'x': case 'E':
3356#ifndef ALTERNATE_SHEBANG
3357 case 'S':
3358#endif
3359 case 'V':
c4bc78d9 3360 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC		 3361 default:
3362 Perl_croak(aTHX_
3363 "Unrecognized switch: -%.1s (-h will show valid options)",s
3364 );
c4bc78d9
NC		 3365 }
3366 return NULL;
3367}
3368
3369
3370STATIC void
3371S_minus_v(pTHX)
3372{
d7aa5382 3373 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3374 upg_version(PL_patchlevel, TRUE);
8e9464f1 3375#if !defined(DGUX)
46807d8e
YO		 3376 {
3377 SV* level= vstringify(PL_patchlevel);
3378#ifdef PERL_PATCHNUM
23d483e2
NC		 3379# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3380 SV *num = newSVpvs(PERL_PATCHNUM "*");
3381# else
3382 SV *num = newSVpvs(PERL_PATCHNUM);
3383# endif
46807d8e
YO		 3384
3385 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3386 SvREFCNT_dec(level);
3387 level= num;
3388 } else {
d0a9311f 3389 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO		 3390 SvREFCNT_dec(num);
3391 }
3392 #endif
3393 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG		 3394 "\nThis is perl " STRINGIFY(PERL_REVISION)
3395 ", version " STRINGIFY(PERL_VERSION)
3396 ", subversion " STRINGIFY(PERL_SUBVERSION)
3397 " (%"SVf") built for " ARCHNAME, level
3398 );
46807d8e
YO		 3399 SvREFCNT_dec(level);
3400 }
8e9464f1
JH		 3401#else /* DGUX */
3402/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3403 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3404 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3405 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH		 3406 PerlIO_printf(PerlIO_stdout(),
3407 Perl_form(aTHX_ " built under %s at %s %s\n",
3408 OSNAME, __DATE__, __TIME__));
3409 PerlIO_printf(PerlIO_stdout(),
3410 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3411 OSVERS));
8e9464f1 3412#endif /* !DGUX */
fb73857a 3413#if defined(LOCAL_PATCH_COUNT)
3414 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 3415 PerlIO_printf(PerlIO_stdout(),
3416 "\n(with %d registered patch%s, "
3417 "see perl -V for more detail)",
bb7a0f54 3418 LOCAL_PATCH_COUNT,
b0e47665 3419 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3420#endif
1a30305b 3421
b0e47665 3422 PerlIO_printf(PerlIO_stdout(),
fdfb76e4 3423 "\n\nCopyright 1987-2012, Larry Wall\n");
79072805 3424#ifdef MSDOS
b0e47665
GS		 3425 PerlIO_printf(PerlIO_stdout(),
3426 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 3427#endif
3428#ifdef DJGPP
b0e47665
GS		 3429 PerlIO_printf(PerlIO_stdout(),
3430 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3431 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3432#endif
79072805 3433#ifdef OS2
b0e47665
GS		 3434 PerlIO_printf(PerlIO_stdout(),
3435 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3436 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3437#endif
a3f9223b 3438#ifdef __BEOS__
b0e47665
GS		 3439 PerlIO_printf(PerlIO_stdout(),
3440 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3441#endif
1d84e8df 3442#ifdef MPE
b0e47665 3443 PerlIO_printf(PerlIO_stdout(),
e583a879 3444 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3445#endif
9d116dd7 3446#ifdef OEMVS
b0e47665
GS		 3447 PerlIO_printf(PerlIO_stdout(),
3448 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3449#endif
495c5fdc 3450#ifdef __VOS__
b0e47665 3451 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3452 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3453#endif
a1a0e61e 3454#ifdef POSIX_BC
b0e47665
GS		 3455 PerlIO_printf(PerlIO_stdout(),
3456 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3457#endif
f83d2536 3458#ifdef EPOC
b0e47665 3459 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3460 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3461#endif
e1caacb4 3462#ifdef UNDER_CE
b475b3e6
JH		 3463 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3464 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH		 3465 wce_hitreturn();
3466#endif
a0fd4948 3467#ifdef __SYMBIAN32__
27da23d5
JH		 3468 PerlIO_printf(PerlIO_stdout(),
3469 "Symbian port by Nokia, 2004-2005\n");
3470#endif
baed7233
DL		 3471#ifdef BINARY_BUILD_NOTICE
3472 BINARY_BUILD_NOTICE;
3473#endif
b0e47665
GS		 3474 PerlIO_printf(PerlIO_stdout(),
3475 "\n\
79072805 3476Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3477GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3478Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3479this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3480Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3481 my_exit(0);
79072805
LW		 3482}
3483
3484/* compliments of Tom Christiansen */
3485
3486/* unexec() can be found in the Gnu emacs distribution */
ee580363 3487/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805 3488
25bbd826
CB		 3489#ifdef VMS
3490#include <lib$routines.h>
3491#endif
3492
79072805 3493void
864dbfa3 3494Perl_my_unexec(pTHX)
79072805 3495{
b37c2d43 3496 PERL_UNUSED_CONTEXT;
79072805 3497#ifdef UNEXEC
b37c2d43
AL		 3498 SV * prog = newSVpv(BIN_EXP, 0);
3499 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3500 int status = 1;
79072805
LW		 3501 extern int etext;
3502
396482e1 3503 sv_catpvs(prog, "/perl");
396482e1 3504 sv_catpvs(file, ".perldump");
79072805 3505
ee580363
GS		 3506 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3507 /* unexec prints msg to stderr in case of failure */
6ad3d225 3508 PerlProc_exit(status);
79072805 3509#else
a5f75d66 3510# ifdef VMS
a5f75d66 3511 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO		 3512# elif defined(WIN32) || defined(__CYGWIN__)
3513 Perl_croak(aTHX_ "dump is not supported");
aa689395 3514# else
79072805 3515 ABORT(); /* for use with undump */
aa689395 3516# endif
a5f75d66 3517#endif