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pp_sort.c typo: stabilty
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
LW		 2/* perl.c
3 *
737f4459
NC		 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others
a687059c 6 *
352d5a3a
LW		 7 * You may distribute under the terms of either the GNU General Public
8 * License or the Artistic License, as specified in the README file.
a687059c 9 *
8d063cd8
LW		 10 */
11
a0d0e21e 12/*
4ac71550
TC		 13 * A ship then new they built for him
14 * of mithril and of elven-glass
15 * --from Bilbo's song of Eärendil
16 *
17 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 18 */
45d8adaa 19
166f8a29
DM		 20/* This file contains the top-level functions that are used to create, use
21 * and destroy a perl interpreter, plus the functions used by XS code to
22 * call back into perl. Note that it does not contain the actual main()
ddfa107c 23 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM		 24 */
25
378cc40b 26#include "EXTERN.h"
864dbfa3 27#define PERL_IN_PERL_C
378cc40b 28#include "perl.h"
e3321bb0 29#include "patchlevel.h" /* for local_patches */
4a5df386 30#include "XSUB.h"
378cc40b 31
011f1a1a
JH		 32#ifdef NETWARE
33#include "nwutil.h"
011f1a1a
JH		 34#endif
35
df5cef82 36/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 37#ifdef I_UNISTD
38#include <unistd.h>
39#endif
a0d0e21e 40
2aa47728
NC		 41#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
42# ifdef I_SYS_WAIT
43# include <sys/wait.h>
44# endif
bf357333
NC		 45# ifdef I_SYSUIO
46# include <sys/uio.h>
47# endif
48
49union control_un {
50 struct cmsghdr cm;
51 char control[CMSG_SPACE(sizeof(int))];
52};
53
2aa47728
NC		 54#endif
55
5311654c
JH		 56#ifdef __BEOS__
57# define HZ 1000000
58#endif
59
60#ifndef HZ
61# ifdef CLK_TCK
62# define HZ CLK_TCK
63# else
64# define HZ 60
65# endif
66#endif
67
7114a2d2 68#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 69char *getenv (char *); /* Usually in <stdlib.h> */
54310121 70#endif
71
acfe0abc 72static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 73
cc69b689 74#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 75/* Drop everything. Heck, don't even try to call it */
cc69b689
NC		 76# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
77#else
ec2019ad 78/* Drop almost everything */
cc69b689 79# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 80#endif
8d063cd8 81
d6f07c05
AL		 82#define CALL_BODY_EVAL(myop) \
83 if (PL_op == (myop)) \
139d0ce6 84 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX); \
d6f07c05
AL		 85 if (PL_op) \
86 CALLRUNOPS(aTHX);
87
88#define CALL_BODY_SUB(myop) \
89 if (PL_op == (myop)) \
139d0ce6 90 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL		 91 if (PL_op) \
92 CALLRUNOPS(aTHX);
93
94#define CALL_LIST_BODY(cv) \
95 PUSHMARK(PL_stack_sp); \
ad64d0ec 96 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
d6f07c05 97
e6827a76 98static void
daa7d858 99S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 100{
27da23d5 101 dVAR;
e6827a76
NC		 102 if (!PL_curinterp) {
103 PERL_SET_INTERP(my_perl);
3db8f154 104#if defined(USE_ITHREADS)
e6827a76
NC		 105 INIT_THREADS;
106 ALLOC_THREAD_KEY;
107 PERL_SET_THX(my_perl);
108 OP_REFCNT_INIT;
71ad1b0c 109 HINTS_REFCNT_INIT;
e6827a76 110 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 111# endif
016af4f1
DM		 112#ifdef PERL_IMPLICIT_CONTEXT
113 MUTEX_INIT(&PL_my_ctx_mutex);
114# endif
e6827a76 115 }
c0bce9aa
NC		 116#if defined(USE_ITHREADS)
117 else
118#else
119 /* This always happens for non-ithreads */
120#endif
121 {
e6827a76
NC		 122 PERL_SET_THX(my_perl);
123 }
124}
06d86050 125
cbec8ebe
DM		 126
127/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
128
129void
130Perl_sys_init(int* argc, char*** argv)
131{
4fc0badb 132 dVAR;
7918f24d
NC		 133
134 PERL_ARGS_ASSERT_SYS_INIT;
135
cbec8ebe
DM		 136 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
137 PERL_UNUSED_ARG(argv);
138 PERL_SYS_INIT_BODY(argc, argv);
139}
140
141void
142Perl_sys_init3(int* argc, char*** argv, char*** env)
143{
4fc0badb 144 dVAR;
7918f24d
NC		 145
146 PERL_ARGS_ASSERT_SYS_INIT3;
147
cbec8ebe
DM		 148 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
149 PERL_UNUSED_ARG(argv);
150 PERL_UNUSED_ARG(env);
151 PERL_SYS_INIT3_BODY(argc, argv, env);
152}
153
154void
d0820ef1 155Perl_sys_term()
cbec8ebe 156{
4fc0badb 157 dVAR;
bf81751b
DM		 158 if (!PL_veto_cleanup) {
159 PERL_SYS_TERM_BODY();
160 }
cbec8ebe
DM		 161}
162
163
32e30700
GS		 164#ifdef PERL_IMPLICIT_SYS
165PerlInterpreter *
7766f137
GS		 166perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
167 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 168 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
169 struct IPerlDir* ipD, struct IPerlSock* ipS,
170 struct IPerlProc* ipP)
171{
172 PerlInterpreter *my_perl;
7918f24d
NC		 173
174 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
175
9f653bb5 176 /* Newx() needs interpreter, so call malloc() instead */
32e30700 177 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 178 S_init_tls_and_interp(my_perl);
32e30700
GS		 179 Zero(my_perl, 1, PerlInterpreter);
180 PL_Mem = ipM;
7766f137
GS		 181 PL_MemShared = ipMS;
182 PL_MemParse = ipMP;
32e30700
GS		 183 PL_Env = ipE;
184 PL_StdIO = ipStd;
185 PL_LIO = ipLIO;
186 PL_Dir = ipD;
187 PL_Sock = ipS;
188 PL_Proc = ipP;
7cb608b5 189 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 190
32e30700
GS		 191 return my_perl;
192}
193#else
954c1994
GS		 194
195/*
ccfc67b7
JH		 196=head1 Embedding Functions
197
954c1994
GS		 198=for apidoc perl_alloc
199
200Allocates a new Perl interpreter. See L<perlembed>.
201
202=cut
203*/
204
93a17b20 205PerlInterpreter *
cea2e8a9 206perl_alloc(void)
79072805 207{
cea2e8a9 208 PerlInterpreter *my_perl;
79072805 209
9f653bb5 210 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 211 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 212
e6827a76 213 S_init_tls_and_interp(my_perl);
7cb608b5 214#ifndef PERL_TRACK_MEMPOOL
07409e01 215 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC		 216#else
217 Zero(my_perl, 1, PerlInterpreter);
218 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
219 return my_perl;
220#endif
79072805 221}
32e30700 222#endif /* PERL_IMPLICIT_SYS */
79072805 223
954c1994
GS		 224/*
225=for apidoc perl_construct
226
227Initializes a new Perl interpreter. See L<perlembed>.
228
229=cut
230*/
231
79072805 232void
0cb96387 233perl_construct(pTHXx)
79072805 234{
27da23d5 235 dVAR;
7918f24d
NC		 236
237 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
238
8990e307 239#ifdef MULTIPLICITY
54aff467 240 init_interp();
ac27b0f5 241 PL_perl_destruct_level = 1;
54aff467 242#else
7918f24d 243 PERL_UNUSED_ARG(my_perl);
54aff467
GS		 244 if (PL_perl_destruct_level > 0)
245 init_interp();
246#endif
34caed6d
DM		 247 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
248
34caed6d
DM		 249 /* set read-only and try to insure than we wont see REFCNT==0
250 very often */
251
252 SvREADONLY_on(&PL_sv_undef);
253 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
254
255 sv_setpv(&PL_sv_no,PL_No);
256 /* value lookup in void context - happens to have the side effect
a43d94f2
NC		 257 of caching the numeric forms. However, as &PL_sv_no doesn't contain
258 a string that is a valid numer, we have to turn the public flags by
259 hand: */
34caed6d 260 SvNV(&PL_sv_no);
c1939273 261 SvIV(&PL_sv_no);
a43d94f2
NC		 262 SvIOK_on(&PL_sv_no);
263 SvNOK_on(&PL_sv_no);
34caed6d
DM		 264 SvREADONLY_on(&PL_sv_no);
265 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
266
267 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 268 SvNV(&PL_sv_yes);
c1939273 269 SvIV(&PL_sv_yes);
34caed6d
DM		 270 SvREADONLY_on(&PL_sv_yes);
271 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
272
273 SvREADONLY_on(&PL_sv_placeholder);
274 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
275
276 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 277#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 278 PL_pidstatus = newHV();
ca0c25f6 279#endif
79072805 280
396482e1 281 PL_rs = newSVpvs("\n");
dc92893f 282
cea2e8a9 283 init_stacks();
79072805 284
748a9306 285 init_ids();
a5f75d66 286
312caa8e 287 JMPENV_BOOTSTRAP;
f86702cc 288 STATUS_ALL_SUCCESS;
289
0672f40e 290 init_i18nl10n(1);
36477c24 291 SET_NUMERIC_STANDARD();
0b5b802d 292
ab821d7f 293#if defined(LOCAL_PATCH_COUNT)
3280af22 294 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 295#endif
296
52853b95
GS		 297#ifdef HAVE_INTERP_INTERN
298 sys_intern_init();
299#endif
300
3a1ee7e8 301 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 302
3280af22
NIS		 303 PL_fdpid = newAV(); /* for remembering popen pids by fd */
304 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 305 PL_errors = newSVpvs("");
76f68e9b
MHM		 306 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
307 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
308 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 309#ifdef USE_ITHREADS
402d2eb1
NC		 310 /* First entry is a list of empty elements. It needs to be initialised
311 else all hell breaks loose in S_find_uninit_var(). */
312 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 313 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 314#endif
e5dd39fc 315#ifdef USE_REENTRANT_API
59bd0823 316 Perl_reentrant_init(aTHX);
e5dd39fc 317#endif
3d47000e
AB		 318
319 /* Note that strtab is a rather special HV. Assumptions are made
320 about not iterating on it, and not adding tie magic to it.
321 It is properly deallocated in perl_destruct() */
322 PL_strtab = newHV();
323
3d47000e
AB		 324 HvSHAREKEYS_off(PL_strtab); /* mandatory */
325 hv_ksplit(PL_strtab, 512);
326
0631ea03
AB		 327#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
328 _dyld_lookup_and_bind
329 ("__environ", (unsigned long *) &environ_pointer, NULL);
330#endif /* environ */
331
2f42fcb0
JH		 332#ifndef PERL_MICRO
333# ifdef USE_ENVIRON_ARRAY
0631ea03 334 PL_origenviron = environ;
2f42fcb0 335# endif
0631ea03
AB		 336#endif
337
5311654c 338 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 339 * available or if the sysconf() fails, use the HZ.
27da23d5
JH		 340 * BeOS has those, but returns the wrong value.
341 * The HZ if not originally defined has been by now
342 * been defined as CLK_TCK, if available. */
dbc1d986 343#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH		 344 PL_clocktick = sysconf(_SC_CLK_TCK);
345 if (PL_clocktick <= 0)
346#endif
347 PL_clocktick = HZ;
348
081fc587
AB		 349 PL_stashcache = newHV();
350
e8e3635e 351 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 352
27da23d5
JH		 353#ifdef HAS_MMAP
354 if (!PL_mmap_page_size) {
355#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
356 {
357 SETERRNO(0, SS_NORMAL);
358# ifdef _SC_PAGESIZE
359 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
360# else
361 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
362# endif
363 if ((long) PL_mmap_page_size < 0) {
364 if (errno) {
44f8325f 365 SV * const error = ERRSV;
d4c19fe8 366 SvUPGRADE(error, SVt_PV);
0510663f 367 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH		 368 }
369 else
370 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
371 }
372 }
373#else
374# ifdef HAS_GETPAGESIZE
375 PL_mmap_page_size = getpagesize();
376# else
377# if defined(I_SYS_PARAM) && defined(PAGESIZE)
378 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
379# endif
380# endif
381#endif
382 if (PL_mmap_page_size <= 0)
383 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
384 (IV) PL_mmap_page_size);
385 }
386#endif /* HAS_MMAP */
387
388#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
389 PL_timesbase.tms_utime = 0;
390 PL_timesbase.tms_stime = 0;
391 PL_timesbase.tms_cutime = 0;
392 PL_timesbase.tms_cstime = 0;
393#endif
394
7d113631
NC		 395 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
396
a3e6e81e 397 PL_registered_mros = newHV();
9e169432
NC		 398 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
399 HvMAX(PL_registered_mros) = 0;
a3e6e81e 400
8990e307 401 ENTER;
79072805
LW		 402}
403
954c1994 404/*
62375a60
NIS		 405=for apidoc nothreadhook
406
407Stub that provides thread hook for perl_destruct when there are
408no threads.
409
410=cut
411*/
412
413int
4e9e3734 414Perl_nothreadhook(pTHX)
62375a60 415{
96a5add6 416 PERL_UNUSED_CONTEXT;
62375a60
NIS		 417 return 0;
418}
419
41e4abd8
NC		 420#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
421void
422Perl_dump_sv_child(pTHX_ SV *sv)
423{
424 ssize_t got;
bf357333
NC		 425 const int sock = PL_dumper_fd;
426 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC		 427 union control_un control;
428 struct msghdr msg;
808ad2d0 429 struct iovec vec[2];
bf357333 430 struct cmsghdr *cmptr;
808ad2d0
NC		 431 int returned_errno;
432 unsigned char buffer[256];
41e4abd8 433
7918f24d
NC		 434 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
435
bf357333 436 if(sock == -1 || debug_fd == -1)
41e4abd8
NC		 437 return;
438
439 PerlIO_flush(Perl_debug_log);
440
bf357333
NC		 441 /* All these shenanigans are to pass a file descriptor over to our child for
442 it to dump out to. We can't let it hold open the file descriptor when it
443 forks, as the file descriptor it will dump to can turn out to be one end
444 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 445 be open, the wait would be forever.) */
bf357333
NC		 446
447 msg.msg_control = control.control;
448 msg.msg_controllen = sizeof(control.control);
449 /* We're a connected socket so we don't need a destination */
450 msg.msg_name = NULL;
451 msg.msg_namelen = 0;
452 msg.msg_iov = vec;
808ad2d0 453 msg.msg_iovlen = 1;
bf357333
NC		 454
455 cmptr = CMSG_FIRSTHDR(&msg);
456 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
457 cmptr->cmsg_level = SOL_SOCKET;
458 cmptr->cmsg_type = SCM_RIGHTS;
459 *((int *)CMSG_DATA(cmptr)) = 1;
460
461 vec[0].iov_base = (void*)&sv;
462 vec[0].iov_len = sizeof(sv);
463 got = sendmsg(sock, &msg, 0);
41e4abd8
NC		 464
465 if(got < 0) {
bf357333 466 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC		 467 abort();
468 }
bf357333
NC		 469 if(got < sizeof(sv)) {
470 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC		 471 abort();
472 }
473
808ad2d0
NC		 474 /* Return protocol is
475 int: errno value
476 unsigned char: length of location string (0 for empty)
477 unsigned char*: string (not terminated)
478 */
479 vec[0].iov_base = (void*)&returned_errno;
480 vec[0].iov_len = sizeof(returned_errno);
481 vec[1].iov_base = buffer;
482 vec[1].iov_len = 1;
483
484 got = readv(sock, vec, 2);
41e4abd8
NC		 485
486 if(got < 0) {
487 perror("Debug leaking scalars parent read failed");
808ad2d0 488 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC		 489 abort();
490 }
808ad2d0 491 if(got < sizeof(returned_errno) + 1) {
41e4abd8 492 perror("Debug leaking scalars parent short read");
808ad2d0 493 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC		 494 abort();
495 }
496
808ad2d0
NC		 497 if (*buffer) {
498 got = read(sock, buffer + 1, *buffer);
499 if(got < 0) {
500 perror("Debug leaking scalars parent read 2 failed");
501 PerlIO_flush(PerlIO_stderr());
502 abort();
503 }
504
505 if(got < *buffer) {
506 perror("Debug leaking scalars parent short read 2");
507 PerlIO_flush(PerlIO_stderr());
508 abort();
509 }
510 }
511
512 if (returned_errno || *buffer) {
513 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
514 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
515 returned_errno, strerror(returned_errno));
41e4abd8
NC		 516 }
517}
518#endif
519
62375a60 520/*
954c1994
GS		 521=for apidoc perl_destruct
522
523Shuts down a Perl interpreter. See L<perlembed>.
524
525=cut
526*/
527
31d77e54 528int
0cb96387 529perl_destruct(pTHXx)
79072805 530{
27da23d5 531 dVAR;
be2ea8ed 532 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 533 HV *hv;
2aa47728 534#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC		 535 pid_t child;
536#endif
8990e307 537
7918f24d
NC		 538 PERL_ARGS_ASSERT_PERL_DESTRUCT;
539#ifndef MULTIPLICITY
ed6c66dd 540 PERL_UNUSED_ARG(my_perl);
7918f24d 541#endif
9d4ba2ae 542
3d22c4f0
GG		 543 assert(PL_scopestack_ix == 1);
544
7766f137
GS		 545 /* wait for all pseudo-forked children to finish */
546 PERL_WAIT_FOR_CHILDREN;
547
3280af22 548 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 549#ifdef DEBUGGING
550 {
9d4ba2ae
AL		 551 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
552 if (s) {
e1ec3a88 553 const int i = atoi(s);
5f05dabc 554 if (destruct_level < i)
555 destruct_level = i;
556 }
4633a7c4
LW		 557 }
558#endif
559
27da23d5 560 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 561 dJMPENV;
562 int x = 0;
563
564 JMPENV_PUSH(x);
1b6737cc 565 PERL_UNUSED_VAR(x);
f3faeb53
AB		 566 if (PL_endav && !PL_minus_c)
567 call_list(PL_scopestack_ix, PL_endav);
568 JMPENV_POP;
26f423df 569 }
f3faeb53 570 LEAVE;
a0d0e21e 571 FREETMPS;
3d22c4f0 572 assert(PL_scopestack_ix == 0);
a0d0e21e 573
e00b64d4 574 /* Need to flush since END blocks can produce output */
f13a2bc0 575 my_fflush_all();
e00b64d4 576
62375a60
NIS		 577 if (CALL_FPTR(PL_threadhook)(aTHX)) {
578 /* Threads hook has vetoed further cleanup */
c301d606 579 PL_veto_cleanup = TRUE;
37038d91 580 return STATUS_EXIT;
62375a60
NIS		 581 }
582
2aa47728
NC		 583#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
584 if (destruct_level != 0) {
585 /* Fork here to create a child. Our child's job is to preserve the
586 state of scalars prior to destruction, so that we can instruct it
587 to dump any scalars that we later find have leaked.
588 There's no subtlety in this code - it assumes POSIX, and it doesn't
589 fail gracefully */
590 int fd[2];
591
592 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
593 perror("Debug leaking scalars socketpair failed");
594 abort();
595 }
596
597 child = fork();
598 if(child == -1) {
599 perror("Debug leaking scalars fork failed");
600 abort();
601 }
602 if (!child) {
603 /* We are the child */
3125a5a4
NC		 604 const int sock = fd[1];
605 const int debug_fd = PerlIO_fileno(Perl_debug_log);
606 int f;
808ad2d0
NC		 607 const char *where;
608 /* Our success message is an integer 0, and a char 0 */
b61433a9 609 static const char success[sizeof(int) + 1] = {0};
3125a5a4 610
2aa47728 611 close(fd[0]);
2aa47728 612
3125a5a4
NC		 613 /* We need to close all other file descriptors otherwise we end up
614 with interesting hangs, where the parent closes its end of a
615 pipe, and sits waiting for (another) child to terminate. Only
616 that child never terminates, because it never gets EOF, because
bf357333
NC		 617 we also have the far end of the pipe open. We even need to
618 close the debugging fd, because sometimes it happens to be one
619 end of a pipe, and a process is waiting on the other end for
620 EOF. Normally it would be closed at some point earlier in
621 destruction, but if we happen to cause the pipe to remain open,
622 EOF never occurs, and we get an infinite hang. Hence all the
623 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC		 624
625 f = sysconf(_SC_OPEN_MAX);
626 if(f < 0) {
808ad2d0
NC		 627 where = "sysconf failed";
628 goto abort;
3125a5a4
NC		 629 }
630 while (f--) {
631 if (f == sock)
632 continue;
3125a5a4
NC		 633 close(f);
634 }
635
2aa47728
NC		 636 while (1) {
637 SV *target;
bf357333
NC		 638 union control_un control;
639 struct msghdr msg;
640 struct iovec vec[1];
641 struct cmsghdr *cmptr;
642 ssize_t got;
643 int got_fd;
644
645 msg.msg_control = control.control;
646 msg.msg_controllen = sizeof(control.control);
647 /* We're a connected socket so we don't need a source */
648 msg.msg_name = NULL;
649 msg.msg_namelen = 0;
650 msg.msg_iov = vec;
651 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
652
653 vec[0].iov_base = (void*)&target;
654 vec[0].iov_len = sizeof(target);
655
656 got = recvmsg(sock, &msg, 0);
2aa47728
NC		 657
658 if(got == 0)
659 break;
660 if(got < 0) {
808ad2d0
NC		 661 where = "recv failed";
662 goto abort;
2aa47728
NC		 663 }
664 if(got < sizeof(target)) {
808ad2d0
NC		 665 where = "short recv";
666 goto abort;
2aa47728 667 }
bf357333 668
808ad2d0
NC		 669 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
670 where = "no cmsg";
671 goto abort;
672 }
673 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
674 where = "wrong cmsg_len";
675 goto abort;
676 }
677 if(cmptr->cmsg_level != SOL_SOCKET) {
678 where = "wrong cmsg_level";
679 goto abort;
680 }
681 if(cmptr->cmsg_type != SCM_RIGHTS) {
682 where = "wrong cmsg_type";
683 goto abort;
684 }
bf357333
NC		 685
686 got_fd = *(int*)CMSG_DATA(cmptr);
687 /* For our last little bit of trickery, put the file descriptor
688 back into Perl_debug_log, as if we never actually closed it
689 */
808ad2d0
NC		 690 if(got_fd != debug_fd) {
691 if (dup2(got_fd, debug_fd) == -1) {
692 where = "dup2";
693 goto abort;
694 }
695 }
2aa47728 696 sv_dump(target);
bf357333 697
2aa47728
NC		 698 PerlIO_flush(Perl_debug_log);
699
808ad2d0 700 got = write(sock, &success, sizeof(success));
2aa47728
NC		 701
702 if(got < 0) {
808ad2d0
NC		 703 where = "write failed";
704 goto abort;
2aa47728 705 }
808ad2d0
NC		 706 if(got < sizeof(success)) {
707 where = "short write";
708 goto abort;
2aa47728
NC		 709 }
710 }
711 _exit(0);
808ad2d0
NC		 712 abort:
713 {
714 int send_errno = errno;
715 unsigned char length = (unsigned char) strlen(where);
716 struct iovec failure[3] = {
717 {(void*)&send_errno, sizeof(send_errno)},
718 {&length, 1},
719 {(void*)where, length}
720 };
721 int got = writev(sock, failure, 3);
722 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
723 in the parent if we try to read from the socketpair after the
724 child has exited, even if there was data to read.
725 So sleep a bit to give the parent a fighting chance of
726 reading the data. */
727 sleep(2);
728 _exit((got == -1) ? errno : 0);
729 }
bf357333 730 /* End of child. */
2aa47728 731 }
41e4abd8 732 PL_dumper_fd = fd[0];
2aa47728
NC		 733 close(fd[1]);
734 }
735#endif
736
ff0cee69 737 /* We must account for everything. */
738
739 /* Destroy the main CV and syntax tree */
17fbfdf6
NC		 740 /* Do this now, because destroying ops can cause new SVs to be generated
741 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
742 PL_curcop to point to a valid op from which the filename structure
743 member is copied. */
744 PL_curcop = &PL_compiling;
3280af22 745 if (PL_main_root) {
4e380990
DM		 746 /* ensure comppad/curpad to refer to main's pad */
747 if (CvPADLIST(PL_main_cv)) {
748 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
749 }
3280af22 750 op_free(PL_main_root);
5f66b61c 751 PL_main_root = NULL;
a0d0e21e 752 }
5f66b61c 753 PL_main_start = NULL;
3280af22 754 SvREFCNT_dec(PL_main_cv);
601f1833 755 PL_main_cv = NULL;
24d3c518 756 PL_dirty = TRUE;
ff0cee69 757
13621cfb
NIS		 758 /* Tell PerlIO we are about to tear things apart in case
759 we have layers which are using resources that should
760 be cleaned up now.
761 */
762
763 PerlIO_destruct(aTHX);
764
3280af22 765 if (PL_sv_objcount) {
a0d0e21e
LW		 766 /*
767 * Try to destruct global references. We do this first so that the
768 * destructors and destructees still exist. Some sv's might remain.
769 * Non-referenced objects are on their own.
770 */
a0d0e21e 771 sv_clean_objs();
bf9cdc68 772 PL_sv_objcount = 0;
a0de6cf5 773 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 774 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW		 775 }
776
5cd24f17 777 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 778 SvREFCNT_dec(PL_warnhook);
a0714e2c 779 PL_warnhook = NULL;
3280af22 780 SvREFCNT_dec(PL_diehook);
a0714e2c 781 PL_diehook = NULL;
5cd24f17 782
4b556e6c 783 /* call exit list functions */
3280af22 784 while (PL_exitlistlen-- > 0)
acfe0abc 785 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 786
3280af22 787 Safefree(PL_exitlist);
4b556e6c 788
1c4916e5
CB		 789 PL_exitlist = NULL;
790 PL_exitlistlen = 0;
791
a3e6e81e
NC		 792 SvREFCNT_dec(PL_registered_mros);
793
551a8b83 794 /* jettison our possibly duplicated environment */
4b647fb0
DM		 795 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
796 * so we certainly shouldn't free it here
797 */
2f42fcb0 798#ifndef PERL_MICRO
4b647fb0 799#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 800 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS		 801#ifdef USE_ITHREADS
802 /* only main thread can free environ[0] contents */
803 && PL_curinterp == aTHX
804#endif
805 )
806 {
551a8b83
JH		 807 I32 i;
808
809 for (i = 0; environ[i]; i++)
4b420006 810 safesysfree(environ[i]);
0631ea03 811
4b420006
JH		 812 /* Must use safesysfree() when working with environ. */
813 safesysfree(environ);
551a8b83
JH		 814
815 environ = PL_origenviron;
816 }
817#endif
2f42fcb0 818#endif /* !PERL_MICRO */
551a8b83 819
30985c42
JH		 820 if (destruct_level == 0) {
821
822 DEBUG_P(debprofdump());
823
824#if defined(PERLIO_LAYERS)
825 /* No more IO - including error messages ! */
826 PerlIO_cleanup(aTHX);
827#endif
828
829 CopFILE_free(&PL_compiling);
830 CopSTASH_free(&PL_compiling);
831
832 /* The exit() function will do everything that needs doing. */
833 return STATUS_EXIT;
834 }
835
804ffa60 836 /* reset so print() ends up where we expect */
a0714e2c 837 setdefout(NULL);
804ffa60 838
5f8cb046
DM		 839#ifdef USE_ITHREADS
840 /* the syntax tree is shared between clones
841 * so op_free(PL_main_root) only ReREFCNT_dec's
842 * REGEXPs in the parent interpreter
843 * we need to manually ReREFCNT_dec for the clones
844 */
5f8cb046 845 SvREFCNT_dec(PL_regex_padav);
7d49f689 846 PL_regex_padav = NULL;
5f8cb046
DM		 847 PL_regex_pad = NULL;
848#endif
849
ad64d0ec 850 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB		 851 PL_stashcache = NULL;
852
5f05dabc 853 /* loosen bonds of global variables */
854
2f9285f8
DM		 855 /* XXX can PL_parser still be non-null here? */
856 if(PL_parser && PL_parser->rsfp) {
857 (void)PerlIO_close(PL_parser->rsfp);
858 PL_parser->rsfp = NULL;
8ebc5c01 859 }
860
84386e14
RGS		 861 if (PL_minus_F) {
862 Safefree(PL_splitstr);
863 PL_splitstr = NULL;
864 }
865
8ebc5c01 866 /* switches */
3280af22
NIS		 867 PL_minus_n = FALSE;
868 PL_minus_p = FALSE;
869 PL_minus_l = FALSE;
870 PL_minus_a = FALSE;
871 PL_minus_F = FALSE;
872 PL_doswitches = FALSE;
599cee73 873 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 874 PL_doextract = FALSE;
875 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 876 PL_unsafe = FALSE;
877
878 Safefree(PL_inplace);
bd61b366 879 PL_inplace = NULL;
a7cb1f99 880 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 881
882 if (PL_e_script) {
883 SvREFCNT_dec(PL_e_script);
a0714e2c 884 PL_e_script = NULL;
8ebc5c01 885 }
886
bf9cdc68
RG		 887 PL_perldb = 0;
888
8ebc5c01 889 /* magical thingies */
890
e23d9e2f
CS		 891 SvREFCNT_dec(PL_ofsgv); /* *, */
892 PL_ofsgv = NULL;
5f05dabc 893
7889fe52 894 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 895 PL_ors_sv = NULL;
8ebc5c01 896
3280af22 897 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 898 PL_rs = NULL;
dc92893f 899
d33b2eba 900 Safefree(PL_osname); /* $^O */
bd61b366 901 PL_osname = NULL;
5f05dabc 902
3280af22 903 SvREFCNT_dec(PL_statname);
a0714e2c
SS		 904 PL_statname = NULL;
905 PL_statgv = NULL;
5f05dabc 906
8ebc5c01 907 /* defgv, aka *_ should be taken care of elsewhere */
908
8ebc5c01 909 /* clean up after study() */
3280af22 910 SvREFCNT_dec(PL_lastscream);
a0714e2c 911 PL_lastscream = NULL;
3280af22
NIS		 912 Safefree(PL_screamfirst);
913 PL_screamfirst = 0;
914 Safefree(PL_screamnext);
915 PL_screamnext = 0;
8ebc5c01 916
7d5ea4e7
GS		 917 /* float buffer */
918 Safefree(PL_efloatbuf);
bd61b366 919 PL_efloatbuf = NULL;
7d5ea4e7
GS		 920 PL_efloatsize = 0;
921
8ebc5c01 922 /* startup and shutdown function lists */
3280af22 923 SvREFCNT_dec(PL_beginav);
5a837c8f 924 SvREFCNT_dec(PL_beginav_save);
3280af22 925 SvREFCNT_dec(PL_endav);
7d30b5c4 926 SvREFCNT_dec(PL_checkav);
ece599bd 927 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG		 928 SvREFCNT_dec(PL_unitcheckav);
929 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 930 SvREFCNT_dec(PL_initav);
7d49f689
NC		 931 PL_beginav = NULL;
932 PL_beginav_save = NULL;
933 PL_endav = NULL;
934 PL_checkav = NULL;
935 PL_checkav_save = NULL;
3c10abe3
AG		 936 PL_unitcheckav = NULL;
937 PL_unitcheckav_save = NULL;
7d49f689 938 PL_initav = NULL;
5618dfe8 939
8ebc5c01 940 /* shortcuts just get cleared */
a0714e2c
SS		 941 PL_envgv = NULL;
942 PL_incgv = NULL;
943 PL_hintgv = NULL;
944 PL_errgv = NULL;
945 PL_argvgv = NULL;
946 PL_argvoutgv = NULL;
947 PL_stdingv = NULL;
948 PL_stderrgv = NULL;
949 PL_last_in_gv = NULL;
950 PL_replgv = NULL;
951 PL_DBgv = NULL;
952 PL_DBline = NULL;
953 PL_DBsub = NULL;
954 PL_DBsingle = NULL;
955 PL_DBtrace = NULL;
956 PL_DBsignal = NULL;
601f1833 957 PL_DBcv = NULL;
7d49f689 958 PL_dbargs = NULL;
5c284bb0 959 PL_debstash = NULL;
8ebc5c01 960
7a1c5554 961 SvREFCNT_dec(PL_argvout_stack);
7d49f689 962 PL_argvout_stack = NULL;
8ebc5c01 963
5c831c24 964 SvREFCNT_dec(PL_modglobal);
5c284bb0 965 PL_modglobal = NULL;
5c831c24 966 SvREFCNT_dec(PL_preambleav);
7d49f689 967 PL_preambleav = NULL;
5c831c24 968 SvREFCNT_dec(PL_subname);
a0714e2c 969 PL_subname = NULL;
ca0c25f6 970#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 971 SvREFCNT_dec(PL_pidstatus);
5c284bb0 972 PL_pidstatus = NULL;
ca0c25f6 973#endif
5c831c24 974 SvREFCNT_dec(PL_toptarget);
a0714e2c 975 PL_toptarget = NULL;
5c831c24 976 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS		 977 PL_bodytarget = NULL;
978 PL_formtarget = NULL;
5c831c24 979
d33b2eba 980 /* free locale stuff */
b9582b6a 981#ifdef USE_LOCALE_COLLATE
d33b2eba 982 Safefree(PL_collation_name);
bd61b366 983 PL_collation_name = NULL;
b9582b6a 984#endif
d33b2eba 985
b9582b6a 986#ifdef USE_LOCALE_NUMERIC
d33b2eba 987 Safefree(PL_numeric_name);
bd61b366 988 PL_numeric_name = NULL;
a453c169 989 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 990 PL_numeric_radix_sv = NULL;
b9582b6a 991#endif
d33b2eba 992
5c831c24
GS		 993 /* clear utf8 character classes */
994 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS		 995 SvREFCNT_dec(PL_utf8_ascii);
996 SvREFCNT_dec(PL_utf8_alpha);
997 SvREFCNT_dec(PL_utf8_space);
998 SvREFCNT_dec(PL_utf8_cntrl);
999 SvREFCNT_dec(PL_utf8_graph);
1000 SvREFCNT_dec(PL_utf8_digit);
1001 SvREFCNT_dec(PL_utf8_upper);
1002 SvREFCNT_dec(PL_utf8_lower);
1003 SvREFCNT_dec(PL_utf8_print);
1004 SvREFCNT_dec(PL_utf8_punct);
1005 SvREFCNT_dec(PL_utf8_xdigit);
1006 SvREFCNT_dec(PL_utf8_mark);
1007 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1008 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1009 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1010 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH		 1011 SvREFCNT_dec(PL_utf8_idstart);
1012 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c 1013 PL_utf8_alnum = NULL;
a0714e2c
SS		 1014 PL_utf8_ascii = NULL;
1015 PL_utf8_alpha = NULL;
1016 PL_utf8_space = NULL;
1017 PL_utf8_cntrl = NULL;
1018 PL_utf8_graph = NULL;
1019 PL_utf8_digit = NULL;
1020 PL_utf8_upper = NULL;
1021 PL_utf8_lower = NULL;
1022 PL_utf8_print = NULL;
1023 PL_utf8_punct = NULL;
1024 PL_utf8_xdigit = NULL;
1025 PL_utf8_mark = NULL;
1026 PL_utf8_toupper = NULL;
1027 PL_utf8_totitle = NULL;
1028 PL_utf8_tolower = NULL;
1029 PL_utf8_tofold = NULL;
1030 PL_utf8_idstart = NULL;
1031 PL_utf8_idcont = NULL;
5c831c24 1032
971a9dd3 1033 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1034 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1035 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC		 1036 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1037 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS		 1038 CopFILE_free(&PL_compiling);
1039 CopSTASH_free(&PL_compiling);
5c831c24 1040
a0d0e21e 1041 /* Prepare to destruct main symbol table. */
5f05dabc 1042
3280af22
NIS		 1043 hv = PL_defstash;
1044 PL_defstash = 0;
a0d0e21e 1045 SvREFCNT_dec(hv);
5c831c24 1046 SvREFCNT_dec(PL_curstname);
a0714e2c 1047 PL_curstname = NULL;
a0d0e21e 1048
5a844595
GS		 1049 /* clear queued errors */
1050 SvREFCNT_dec(PL_errors);
a0714e2c 1051 PL_errors = NULL;
5a844595 1052
dd69841b
BB		 1053 SvREFCNT_dec(PL_isarev);
1054
a0d0e21e 1055 FREETMPS;
9b387841 1056 if (destruct_level >= 2) {
3280af22 1057 if (PL_scopestack_ix != 0)
9b387841
NC		 1058 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1059 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1060 (long)PL_scopestack_ix);
3280af22 1061 if (PL_savestack_ix != 0)
9b387841
NC		 1062 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1063 "Unbalanced saves: %ld more saves than restores\n",
1064 (long)PL_savestack_ix);
3280af22 1065 if (PL_tmps_floor != -1)
9b387841
NC		 1066 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1067 (long)PL_tmps_floor + 1);
a0d0e21e 1068 if (cxstack_ix != -1)
9b387841
NC		 1069 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1070 (long)cxstack_ix + 1);
a0d0e21e 1071 }
8990e307
LW		 1072
1073 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH		 1074
1075 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1076 while (sv_clean_all() > 2)
5226ed68
JH		 1077 ;
1078
d4777f27
GS		 1079 AvREAL_off(PL_fdpid); /* no surviving entries */
1080 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1081 PL_fdpid = NULL;
d33b2eba 1082
6c644e78
GS		 1083#ifdef HAVE_INTERP_INTERN
1084 sys_intern_clear();
1085#endif
1086
6e72f9df 1087 /* Destruct the global string table. */
1088 {
1089 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1090 * so that sv_free() won't fail on them.
80459961
NC		 1091 * Now that the global string table is using a single hunk of memory
1092 * for both HE and HEK, we either need to explicitly unshare it the
1093 * correct way, or actually free things here.
6e72f9df 1094 */
80459961
NC		 1095 I32 riter = 0;
1096 const I32 max = HvMAX(PL_strtab);
c4420975 1097 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC		 1098 HE *hent = array[0];
1099
6e72f9df 1100 for (;;) {
0453d815 1101 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1102 HE * const next = HeNEXT(hent);
9014280d 1103 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1104 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1105 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC		 1106 Safefree(hent);
1107 hent = next;
6e72f9df 1108 }
1109 if (!hent) {
1110 if (++riter > max)
1111 break;
1112 hent = array[riter];
1113 }
1114 }
80459961
NC		 1115
1116 Safefree(array);
1117 HvARRAY(PL_strtab) = 0;
1118 HvTOTALKEYS(PL_strtab) = 0;
1119 HvFILL(PL_strtab) = 0;
6e72f9df 1120 }
3280af22 1121 SvREFCNT_dec(PL_strtab);
6e72f9df 1122
e652bb2f 1123#ifdef USE_ITHREADS
c21d1a0f 1124 /* free the pointer tables used for cloning */
a0739874 1125 ptr_table_free(PL_ptr_table);
bf9cdc68 1126 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1127#endif
a0739874 1128
d33b2eba
GS		 1129 /* free special SVs */
1130
1131 SvREFCNT(&PL_sv_yes) = 0;
1132 sv_clear(&PL_sv_yes);
1133 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1134 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 1135
1136 SvREFCNT(&PL_sv_no) = 0;
1137 sv_clear(&PL_sv_no);
1138 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1139 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1140
9f375a43
DM		 1141 {
1142 int i;
1143 for (i=0; i<=2; i++) {
1144 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1145 sv_clear(PERL_DEBUG_PAD(i));
1146 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1147 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1148 }
1149 }
1150
0453d815 1151 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1152 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1153
eba0f806
DM		 1154#ifdef DEBUG_LEAKING_SCALARS
1155 if (PL_sv_count != 0) {
1156 SV* sva;
1157 SV* sv;
1158 register SV* svend;
1159
ad64d0ec 1160 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM		 1161 svend = &sva[SvREFCNT(sva)];
1162 for (sv = sva + 1; sv < svend; ++sv) {
1163 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1164 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1165 " flags=0x%"UVxf
fd0854ff
DM		 1166 " refcnt=%"UVuf pTHX__FORMAT "\n"
1167 "\tallocated at %s:%d %s %s%s\n",
574b8821
NC		 1168 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1169 pTHX__VALUE,
fd0854ff
DM		 1170 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1171 sv->sv_debug_line,
1172 sv->sv_debug_inpad ? "for" : "by",
1173 sv->sv_debug_optype ?
1174 PL_op_name[sv->sv_debug_optype]: "(none)",
1175 sv->sv_debug_cloned ? " (cloned)" : ""
1176 );
2aa47728 1177#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1178 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1179#endif
eba0f806
DM		 1180 }
1181 }
1182 }
1183 }
2aa47728
NC		 1184#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1185 {
1186 int status;
1187 fd_set rset;
1188 /* Wait for up to 4 seconds for child to terminate.
1189 This seems to be the least effort way of timing out on reaping
1190 its exit status. */
1191 struct timeval waitfor = {4, 0};
41e4abd8 1192 int sock = PL_dumper_fd;
2aa47728
NC		 1193
1194 shutdown(sock, 1);
1195 FD_ZERO(&rset);
1196 FD_SET(sock, &rset);
1197 select(sock + 1, &rset, NULL, NULL, &waitfor);
1198 waitpid(child, &status, WNOHANG);
1199 close(sock);
1200 }
1201#endif
eba0f806 1202#endif
77abb4c6
NC		 1203#ifdef DEBUG_LEAKING_SCALARS_ABORT
1204 if (PL_sv_count)
1205 abort();
1206#endif
bf9cdc68 1207 PL_sv_count = 0;
eba0f806 1208
f1fac472
NC		 1209#ifdef PERL_DEBUG_READONLY_OPS
1210 free(PL_slabs);
1211 PL_slabs = NULL;
1212 PL_slab_count = 0;
1213#endif
eba0f806 1214
56a2bab7 1215#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS		 1216 /* No more IO - including error messages ! */
1217 PerlIO_cleanup(aTHX);
1218#endif
1219
9f4bd222 1220 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1221 as currently layers use it rather than NULL as a marker
9f4bd222
NIS		 1222 for no arg - and will try and SvREFCNT_dec it.
1223 */
1224 SvREFCNT(&PL_sv_undef) = 0;
1225 SvREADONLY_off(&PL_sv_undef);
1226
3280af22 1227 Safefree(PL_origfilename);
bd61b366 1228 PL_origfilename = NULL;
3280af22 1229 Safefree(PL_reg_start_tmp);
bf9cdc68
RG		 1230 PL_reg_start_tmp = (char**)NULL;
1231 PL_reg_start_tmpl = 0;
43c5f42d 1232 Safefree(PL_reg_curpm);
82ba1be6 1233 Safefree(PL_reg_poscache);
dd28f7bb 1234 free_tied_hv_pool();
3280af22 1235 Safefree(PL_op_mask);
cf36064f 1236 Safefree(PL_psig_name);
bf9cdc68 1237 PL_psig_name = (SV**)NULL;
d525a7b2 1238 PL_psig_ptr = (SV**)NULL;
ce08f86c 1239 Safefree(PL_psig_pend);
bf9cdc68 1240 PL_psig_pend = (int*)NULL;
31c91b43
LR		 1241 {
1242 /* We need to NULL PL_psig_pend first, so that
1243 signal handlers know not to use it */
1244 int *psig_save = PL_psig_pend;
1245 PL_psig_pend = (int*)NULL;
1246 Safefree(psig_save);
1247 }
a0714e2c 1248 PL_formfeed = NULL;
6e72f9df 1249 nuke_stacks();
bf9cdc68
RG		 1250 PL_tainting = FALSE;
1251 PL_taint_warn = FALSE;
3280af22 1252 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1253 PL_debug = 0;
ac27b0f5 1254
a0d0e21e 1255 DEBUG_P(debprofdump());
d33b2eba 1256
e5dd39fc 1257#ifdef USE_REENTRANT_API
10bc17b6 1258 Perl_reentrant_free(aTHX);
e5dd39fc
AB		 1259#endif
1260
612f20c3
GS		 1261 sv_free_arenas();
1262
5d9a96ca
DM		 1263 while (PL_regmatch_slab) {
1264 regmatch_slab *s = PL_regmatch_slab;
1265 PL_regmatch_slab = PL_regmatch_slab->next;
1266 Safefree(s);
1267 }
1268
fc36a67e 1269 /* As the absolutely last thing, free the non-arena SV for mess() */
1270
3280af22 1271 if (PL_mess_sv) {
f350b448
NC		 1272 /* we know that type == SVt_PVMG */
1273
9c63abab 1274 /* it could have accumulated taint magic */
f350b448
NC		 1275 MAGIC* mg;
1276 MAGIC* moremagic;
1277 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1278 moremagic = mg->mg_moremagic;
1279 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1280 && mg->mg_len >= 0)
1281 Safefree(mg->mg_ptr);
1282 Safefree(mg);
9c63abab 1283 }
f350b448 1284
fc36a67e 1285 /* we know that type >= SVt_PV */
8bd4d4c5 1286 SvPV_free(PL_mess_sv);
3280af22
NIS		 1287 Safefree(SvANY(PL_mess_sv));
1288 Safefree(PL_mess_sv);
a0714e2c 1289 PL_mess_sv = NULL;
fc36a67e 1290 }
37038d91 1291 return STATUS_EXIT;
79072805
LW		 1292}
1293
954c1994
GS		 1294/*
1295=for apidoc perl_free
1296
1297Releases a Perl interpreter. See L<perlembed>.
1298
1299=cut
1300*/
1301
79072805 1302void
0cb96387 1303perl_free(pTHXx)
79072805 1304{
5174512c
NC		 1305 dVAR;
1306
7918f24d
NC		 1307 PERL_ARGS_ASSERT_PERL_FREE;
1308
c301d606
DM		 1309 if (PL_veto_cleanup)
1310 return;
1311
7cb608b5 1312#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM		 1313 {
1314 /*
1315 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1316 * value as we're probably hunting memory leaks then
1317 */
1318 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1319 if (!s || atoi(s) == 0) {
4fd0a9b8 1320 const U32 old_debug = PL_debug;
55ef9aae
MHM		 1321 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1322 thread at thread exit. */
4fd0a9b8
NC		 1323 if (DEBUG_m_TEST) {
1324 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1325 "free this thread's memory\n");
1326 PL_debug &= ~ DEBUG_m_FLAG;
1327 }
55ef9aae
MHM		 1328 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1329 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1330 PL_debug = old_debug;
55ef9aae
MHM		 1331 }
1332 }
7cb608b5
NC		 1333#endif
1334
acfe0abc 1335#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1336# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1337 {
acfe0abc 1338# ifdef NETWARE
7af12a34 1339 void *host = nw_internal_host;
acfe0abc 1340# else
7af12a34 1341 void *host = w32_internal_host;
acfe0abc 1342# endif
7af12a34 1343 PerlMem_free(aTHXx);
acfe0abc 1344# ifdef NETWARE
7af12a34 1345 nw_delete_internal_host(host);
acfe0abc 1346# else
7af12a34 1347 win32_delete_internal_host(host);
acfe0abc 1348# endif
7af12a34 1349 }
1c0ca838
GS		 1350# else
1351 PerlMem_free(aTHXx);
1352# endif
acfe0abc
GS		 1353#else
1354 PerlMem_free(aTHXx);
76e3520e 1355#endif
79072805
LW		 1356}
1357
b7f7fff6 1358#if defined(USE_ITHREADS)
aebd1ac7
GA		 1359/* provide destructors to clean up the thread key when libperl is unloaded */
1360#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1361
826955bd 1362#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1363#pragma fini "perl_fini"
666ad1ec
GA		 1364#elif defined(__sun) && !defined(__GNUC__)
1365#pragma fini (perl_fini)
aebd1ac7
GA		 1366#endif
1367
0dbb1585
AL		 1368static void
1369#if defined(__GNUC__)
1370__attribute__((destructor))
aebd1ac7 1371#endif
de009b76 1372perl_fini(void)
aebd1ac7 1373{
27da23d5 1374 dVAR;
c301d606 1375 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA		 1376 FREE_THREAD_KEY;
1377}
1378
1379#endif /* WIN32 */
1380#endif /* THREADS */
1381
4b556e6c 1382void
864dbfa3 1383Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1384{
97aff369 1385 dVAR;
3280af22
NIS		 1386 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1387 PL_exitlist[PL_exitlistlen].fn = fn;
1388 PL_exitlist[PL_exitlistlen].ptr = ptr;
1389 ++PL_exitlistlen;
4b556e6c
JD		 1390}
1391
56cf6df8
RGS		 1392#ifdef HAS_PROCSELFEXE
1393/* This is a function so that we don't hold on to MAXPATHLEN
1394 bytes of stack longer than necessary
1395 */
1396STATIC void
e1ec3a88 1397S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS		 1398{
1399 char buf[MAXPATHLEN];
1400 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1401
1402 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1403 includes a spurious NUL which will cause $^X to fail in system
1404 or backticks (this will prevent extensions from being built and
1405 many tests from working). readlink is not meant to add a NUL.
1406 Normal readlink works fine.
1407 */
1408 if (len > 0 && buf[len-1] == '\0') {
1409 len--;
1410 }
1411
1412 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1413 returning the text "unknown" from the readlink rather than the path
1414 to the executable (or returning an error from the readlink). Any valid
1415 path has a '/' in it somewhere, so use that to validate the result.
1416 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1417 */
1418 if (len > 0 && memchr(buf, '/', len)) {
1419 sv_setpvn(sv,buf,len);
1420 }
1421 else {
1422 sv_setpv(sv,arg0);
1423 }
1424}
1425#endif /* HAS_PROCSELFEXE */
b7975bdd
NC		 1426
1427STATIC void
1428S_set_caret_X(pTHX) {
97aff369 1429 dVAR;
fafc274c 1430 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC		 1431 if (tmpgv) {
1432#ifdef HAS_PROCSELFEXE
1433 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1434#else
1435#ifdef OS2
c69033f2 1436 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1437#else
c69033f2 1438 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC		 1439#endif
1440#endif
1441 }
1442}
1443
954c1994
GS		 1444/*
1445=for apidoc perl_parse
1446
1447Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1448
1449=cut
1450*/
1451
79072805 1452int
0cb96387 1453perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1454{
27da23d5 1455 dVAR;
6224f72b 1456 I32 oldscope;
6224f72b 1457 int ret;
db36c5a1 1458 dJMPENV;
8d063cd8 1459
7918f24d
NC		 1460 PERL_ARGS_ASSERT_PERL_PARSE;
1461#ifndef MULTIPLICITY
ed6c66dd 1462 PERL_UNUSED_ARG(my_perl);
7918f24d 1463#endif
9d4ba2ae 1464
b0891165
JH		 1465#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1466 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1467 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC		 1468 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1469 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1470 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC		 1471 if (!PL_rehash_seed_set)
1472 PL_rehash_seed = get_hash_seed();
b0891165 1473 {
9d4ba2ae 1474 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1475
1b6737cc
AL		 1476 if (s && (atoi(s) == 1))
1477 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH		 1478 }
1479#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1480
3280af22 1481 PL_origargc = argc;
e2975953 1482 PL_origargv = argv;
a0d0e21e 1483
a2722ac9
GA		 1484 if (PL_origalen != 0) {
1485 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1486 }
1487 else {
3cb9023d
JH		 1488 /* Set PL_origalen be the sum of the contiguous argv[]
1489 * elements plus the size of the env in case that it is
e9137a8e 1490 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH		 1491 * as the maximum modifiable length of $0. In the worst case
1492 * the area we are able to modify is limited to the size of
43c32782 1493 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1494 * --jhi */
e1ec3a88 1495 const char *s = NULL;
54bfe034 1496 int i;
1b6737cc 1497 const UV mask =
7d8e7db3 1498 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1499 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1500 const UV aligned =
43c32782
JH		 1501 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1502
1503 /* See if all the arguments are contiguous in memory. Note
1504 * that 'contiguous' is a loose term because some platforms
1505 * align the argv[] and the envp[]. If the arguments look
1506 * like non-aligned, assume that they are 'strictly' or
1507 * 'traditionally' contiguous. If the arguments look like
1508 * aligned, we just check that they are within aligned
1509 * PTRSIZE bytes. As long as no system has something bizarre
1510 * like the argv[] interleaved with some other data, we are
1511 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH		 1512 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1513 while (*s) s++;
1514 for (i = 1; i < PL_origargc; i++) {
1515 if ((PL_origargv[i] == s + 1
43c32782 1516#ifdef OS2
c8941eeb 1517 || PL_origargv[i] == s + 2
43c32782 1518#endif
c8941eeb
JH		 1519 )
1520 ||
1521 (aligned &&
1522 (PL_origargv[i] > s &&
1523 PL_origargv[i] <=
1524 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1525 )
1526 {
1527 s = PL_origargv[i];
1528 while (*s) s++;
1529 }
1530 else
1531 break;
54bfe034 1532 }
54bfe034 1533 }
a4a109c2
JD		 1534
1535#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1536 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1537 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1538 if ((PL_origenviron[0] == s + 1)
43c32782
JH		 1539 ||
1540 (aligned &&
1541 (PL_origenviron[0] > s &&
1542 PL_origenviron[0] <=
1543 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1544 )
1545 {
9d419b5f 1546#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH		 1547 s = PL_origenviron[0];
1548 while (*s) s++;
1549#endif
bd61b366 1550 my_setenv("NoNe SuCh", NULL);
43c32782
JH		 1551 /* Force copy of environment. */
1552 for (i = 1; PL_origenviron[i]; i++) {
1553 if (PL_origenviron[i] == s + 1
1554 ||
1555 (aligned &&
1556 (PL_origenviron[i] > s &&
1557 PL_origenviron[i] <=
1558 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1559 )
1560 {
1561 s = PL_origenviron[i];
1562 while (*s) s++;
1563 }
1564 else
1565 break;
54bfe034 1566 }
43c32782 1567 }
54bfe034 1568 }
a4a109c2
JD		 1569#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1570
2d2af554 1571 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH		 1572 }
1573
3280af22 1574 if (PL_do_undump) {
a0d0e21e
LW		 1575
1576 /* Come here if running an undumped a.out. */
1577
3280af22
NIS		 1578 PL_origfilename = savepv(argv[0]);
1579 PL_do_undump = FALSE;
a0d0e21e 1580 cxstack_ix = -1; /* start label stack again */
748a9306 1581 init_ids();
b7975bdd
NC		 1582 assert (!PL_tainted);
1583 TAINT;
1584 S_set_caret_X(aTHX);
1585 TAINT_NOT;
a0d0e21e
LW		 1586 init_postdump_symbols(argc,argv,env);
1587 return 0;
1588 }
1589
3280af22 1590 if (PL_main_root) {
3280af22 1591 op_free(PL_main_root);
5f66b61c 1592 PL_main_root = NULL;
ff0cee69 1593 }
5f66b61c 1594 PL_main_start = NULL;
3280af22 1595 SvREFCNT_dec(PL_main_cv);
601f1833 1596 PL_main_cv = NULL;
79072805 1597
3280af22
NIS		 1598 time(&PL_basetime);
1599 oldscope = PL_scopestack_ix;
599cee73 1600 PL_dowarn = G_WARN_OFF;
f86702cc 1601
14dd3ad8 1602 JMPENV_PUSH(ret);
6224f72b 1603 switch (ret) {
312caa8e 1604 case 0:
14dd3ad8 1605 parse_body(env,xsinit);
3c10abe3
AG		 1606 if (PL_unitcheckav)
1607 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS		 1608 if (PL_checkav)
1609 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 1610 ret = 0;
1611 break;
6224f72b
GS		 1612 case 1:
1613 STATUS_ALL_FAILURE;
1614 /* FALL THROUGH */
1615 case 2:
1616 /* my_exit() was called */
3280af22 1617 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1618 LEAVE;
1619 FREETMPS;
3280af22 1620 PL_curstash = PL_defstash;
3c10abe3
AG		 1621 if (PL_unitcheckav)
1622 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS		 1623 if (PL_checkav)
1624 call_list(oldscope, PL_checkav);
37038d91 1625 ret = STATUS_EXIT;
14dd3ad8 1626 break;
6224f72b 1627 case 3:
bf49b057 1628 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1629 ret = 1;
1630 break;
6224f72b 1631 }
14dd3ad8
GS		 1632 JMPENV_POP;
1633 return ret;
1634}
1635
4a5df386
NC		 1636/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1637 miniperl, and we need to see those flags reflected in the values here. */
1638
1639/* What this returns is subject to change. Use the public interface in Config.
1640 */
1641static void
1642S_Internals_V(pTHX_ CV *cv)
1643{
1644 dXSARGS;
1645#ifdef LOCAL_PATCH_COUNT
1646 const int local_patch_count = LOCAL_PATCH_COUNT;
1647#else
1648 const int local_patch_count = 0;
1649#endif
2dc296d2 1650 const int entries = 3 + local_patch_count;
4a5df386
NC		 1651 int i;
1652 static char non_bincompat_options[] =
1653# ifdef DEBUGGING
1654 " DEBUGGING"
1655# endif
1656# ifdef NO_MATHOMS
1657 " NO_MATHOMS"
1658# endif
1659# ifdef PERL_DISABLE_PMC
1660 " PERL_DISABLE_PMC"
1661# endif
1662# ifdef PERL_DONT_CREATE_GVSV
1663 " PERL_DONT_CREATE_GVSV"
1664# endif
1665# ifdef PERL_IS_MINIPERL
1666 " PERL_IS_MINIPERL"
1667# endif
1668# ifdef PERL_MALLOC_WRAP
1669 " PERL_MALLOC_WRAP"
1670# endif
1671# ifdef PERL_MEM_LOG
1672 " PERL_MEM_LOG"
1673# endif
1674# ifdef PERL_MEM_LOG_NOIMPL
1675 " PERL_MEM_LOG_NOIMPL"
1676# endif
1677# ifdef PERL_USE_DEVEL
1678 " PERL_USE_DEVEL"
1679# endif
1680# ifdef PERL_USE_SAFE_PUTENV
1681 " PERL_USE_SAFE_PUTENV"
1682# endif
1683# ifdef USE_SITECUSTOMIZE
1684 " USE_SITECUSTOMIZE"
1685# endif
1686# ifdef USE_FAST_STDIO
1687 " USE_FAST_STDIO"
1688# endif
1689 ;
1690 PERL_UNUSED_ARG(cv);
1691 PERL_UNUSED_ARG(items);
1692
1693 EXTEND(SP, entries);
1694
1695 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1696 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1697 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1698
1699#ifdef __DATE__
1700# ifdef __TIME__
1701 PUSHs(Perl_newSVpvn_flags(aTHX_
1702 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1703 SVs_TEMP));
1704# else
1705 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1706 SVs_TEMP));
1707# endif
1708#else
1709 PUSHs(&PL_sv_undef);
1710#endif
1711
4a5df386
NC		 1712 for (i = 1; i <= local_patch_count; i++) {
1713 /* This will be an undef, if PL_localpatches[i] is NULL. */
1714 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1715 }
1716
1717 XSRETURN(entries);
1718}
1719
be71fc8f
NC		 1720#define INCPUSH_UNSHIFT 0x01
1721#define INCPUSH_ADD_OLD_VERS 0x02
1722#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1723#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1724#define INCPUSH_NOT_BASEDIR 0x10
1725#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC		 1726#define INCPUSH_ADD_SUB_DIRS \
1727 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1728
312caa8e 1729STATIC void *
14dd3ad8 1730S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1731{
27da23d5 1732 dVAR;
2f9285f8 1733 PerlIO *rsfp;
312caa8e 1734 int argc = PL_origargc;
8f42b153 1735 char **argv = PL_origargv;
e1ec3a88 1736 const char *scriptname = NULL;
312caa8e 1737 VOL bool dosearch = FALSE;
c7030b81 1738 register char c;
bd61b366 1739 const char *cddir = NULL;
ab019eaa 1740#ifdef USE_SITECUSTOMIZE
20ef40cf 1741 bool minus_f = FALSE;
ab019eaa 1742#endif
009d90df 1743 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1744 bool add_read_e_script = FALSE;
009d90df
DM		 1745
1746 SvGROW(linestr_sv, 80);
76f68e9b 1747 sv_setpvs(linestr_sv,"");
312caa8e 1748
6224f72b 1749 init_main_stash();
54310121 1750
c7030b81
NC		 1751 {
1752 const char *s;
6224f72b
GS		 1753 for (argc--,argv++; argc > 0; argc--,argv++) {
1754 if (argv[0][0] != '-' || !argv[0][1])
1755 break;
6224f72b
GS		 1756 s = argv[0]+1;
1757 reswitch:
47f56822 1758 switch ((c = *s)) {
729a02f2 1759 case 'C':
1d5472a9
GS		 1760#ifndef PERL_STRICT_CR
1761 case '\r':
1762#endif
6224f72b
GS		 1763 case ' ':
1764 case '0':
1765 case 'F':
1766 case 'a':
1767 case 'c':
1768 case 'd':
1769 case 'D':
1770 case 'h':
1771 case 'i':
1772 case 'l':
1773 case 'M':
1774 case 'm':
1775 case 'n':
1776 case 'p':
1777 case 's':
1778 case 'u':
1779 case 'U':
1780 case 'v':
599cee73
PM		 1781 case 'W':
1782 case 'X':
6224f72b 1783 case 'w':
97bd5664 1784 if ((s = moreswitches(s)))
6224f72b
GS		 1785 goto reswitch;
1786 break;
33b78306 1787
1dbad523 1788 case 't':
22f7c9c9 1789 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS		 1790 if( !PL_tainting ) {
1791 PL_taint_warn = TRUE;
1792 PL_tainting = TRUE;
1793 }
1794 s++;
1795 goto reswitch;
6224f72b 1796 case 'T':
22f7c9c9 1797 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1798 PL_tainting = TRUE;
317ea90d 1799 PL_taint_warn = FALSE;
6224f72b
GS		 1800 s++;
1801 goto reswitch;
f86702cc 1802
bc9b29db
RH		 1803 case 'E':
1804 PL_minus_E = TRUE;
1805 /* FALL THROUGH */
6224f72b 1806 case 'e':
f20b2998 1807 forbid_setid('e', FALSE);
3280af22 1808 if (!PL_e_script) {
396482e1 1809 PL_e_script = newSVpvs("");
5486870f 1810 add_read_e_script = TRUE;
6224f72b
GS		 1811 }
1812 if (*++s)
3280af22 1813 sv_catpv(PL_e_script, s);
6224f72b 1814 else if (argv[1]) {
3280af22 1815 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1816 argc--,argv++;
1817 }
1818 else
47f56822 1819 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1820 sv_catpvs(PL_e_script, "\n");
6224f72b 1821 break;
afe37c7d 1822
20ef40cf 1823 case 'f':
f5542d3a 1824#ifdef USE_SITECUSTOMIZE
20ef40cf 1825 minus_f = TRUE;
f5542d3a 1826#endif
20ef40cf
GA		 1827 s++;
1828 goto reswitch;
1829
6224f72b 1830 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1831 forbid_setid('I', FALSE);
bd61b366 1832 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS		 1833 argc--,argv++;
1834 }
6224f72b 1835 if (s && *s) {
0df16ed7 1836 STRLEN len = strlen(s);
55b4bc1c 1837 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS		 1838 }
1839 else
a67e862a 1840 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1841 break;
6224f72b 1842 case 'S':
f20b2998 1843 forbid_setid('S', FALSE);
6224f72b
GS		 1844 dosearch = TRUE;
1845 s++;
1846 goto reswitch;
1847 case 'V':
7edfd0ef
NC		 1848 {
1849 SV *opts_prog;
1850
7edfd0ef 1851 if (*++s != ':') {
37ca4a5b 1852 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC		 1853 }
1854 else {
1855 ++s;
1856 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1857 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC		 1858 0, s, 0);
1859 s += strlen(s);
1860 }
37ca4a5b 1861 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC		 1862 /* don't look for script or read stdin */
1863 scriptname = BIT_BUCKET;
1864 goto reswitch;
6224f72b 1865 }
6224f72b 1866 case 'x':
3280af22 1867 PL_doextract = TRUE;
6224f72b 1868 s++;
304334da 1869 if (*s)
f4c556ac 1870 cddir = s;
6224f72b
GS		 1871 break;
1872 case 0:
1873 break;
1874 case '-':
1875 if (!*++s || isSPACE(*s)) {
1876 argc--,argv++;
1877 goto switch_end;
1878 }
1879 /* catch use of gnu style long options */
1880 if (strEQ(s, "version")) {
dd374669 1881 s = (char *)"v";
6224f72b
GS		 1882 goto reswitch;
1883 }
1884 if (strEQ(s, "help")) {
dd374669 1885 s = (char *)"h";
6224f72b
GS		 1886 goto reswitch;
1887 }
1888 s--;
1889 /* FALL THROUGH */
1890 default:
cea2e8a9 1891 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1892 }
1893 }
c7030b81
NC		 1894 }
1895
6224f72b 1896 switch_end:
54310121 1897
c7030b81
NC		 1898 {
1899 char *s;
1900
f675dbe5
CB		 1901 if (
1902#ifndef SECURE_INTERNAL_GETENV
1903 !PL_tainting &&
1904#endif
cf756827 1905 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1906 {
74288ac8
GS		 1907 while (isSPACE(*s))
1908 s++;
317ea90d 1909 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1910 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1911 PL_tainting = TRUE;
317ea90d
MS		 1912 PL_taint_warn = FALSE;
1913 }
74288ac8 1914 else {
bd61b366 1915 char *popt_copy = NULL;
74288ac8 1916 while (s && *s) {
54913509 1917 const char *d;
74288ac8
GS		 1918 while (isSPACE(*s))
1919 s++;
1920 if (*s == '-') {
1921 s++;
1922 if (isSPACE(*s))
1923 continue;
1924 }
4ea8f8fb 1925 d = s;
74288ac8
GS		 1926 if (!*s)
1927 break;
2b622f1a 1928 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1929 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1930 while (++s && *s) {
1931 if (isSPACE(*s)) {
cf756827 1932 if (!popt_copy) {
bfa6c418
NC		 1933 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1934 s = popt_copy + (s - d);
1935 d = popt_copy;
cf756827 1936 }
4ea8f8fb
MS		 1937 *s++ = '\0';
1938 break;
1939 }
1940 }
1c4db469 1941 if (*d == 't') {
317ea90d
MS		 1942 if( !PL_tainting ) {
1943 PL_taint_warn = TRUE;
1944 PL_tainting = TRUE;
1945 }
1c4db469 1946 } else {
97bd5664 1947 moreswitches(d);
1c4db469 1948 }
6224f72b 1949 }
6224f72b
GS		 1950 }
1951 }
c7030b81 1952 }
a0d0e21e 1953
87e06404 1954#if defined(USE_SITECUSTOMIZE) && !defined(PERL_IS_MINIPERL)
20ef40cf 1955 if (!minus_f) {
404ad9dc
NC		 1956 /* SITELIB_EXP is a function call on Win32.
1957 The games with local $! are to avoid setting errno if there is no
1958 sitecustomize script. */
1959 const char *const sitelib = SITELIB_EXP;
29a861e7 1960 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC		 1961 Perl_newSVpvf(aTHX_
1962 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
20ef40cf
GA		 1963 }
1964#endif
1965
6224f72b
GS		 1966 if (!scriptname)
1967 scriptname = argv[0];
3280af22 1968 if (PL_e_script) {
6224f72b
GS		 1969 argc++,argv--;
1970 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1971 }
bd61b366 1972 else if (scriptname == NULL) {
6224f72b
GS		 1973#ifdef MSDOS
1974 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1975 moreswitches("h");
6224f72b
GS		 1976#endif
1977 scriptname = "-";
1978 }
1979
b7975bdd
NC		 1980 /* Set $^X early so that it can be used for relocatable paths in @INC */
1981 assert (!PL_tainted);
1982 TAINT;
1983 S_set_caret_X(aTHX);
1984 TAINT_NOT;
2cace6ac 1985 init_perllib();
6224f72b 1986
a52eba0e 1987 {
f20b2998 1988 bool suidscript = FALSE;
829372d3 1989
cc69b689 1990 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 1991
2f9285f8 1992 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 1993 linestr_sv, rsfp);
6224f72b 1994
64ca3a65 1995#ifndef PERL_MICRO
a52eba0e
NC		 1996# if defined(SIGCHLD) || defined(SIGCLD)
1997 {
1998# ifndef SIGCHLD
1999# define SIGCHLD SIGCLD
2000# endif
2001 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2002 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC		 2003 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2004 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC		 2005 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2006 }
0b5b802d 2007 }
a52eba0e 2008# endif
64ca3a65 2009#endif
0b5b802d 2010
e37778c2 2011 if (PL_doextract) {
faef540c 2012
f20b2998 2013 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC		 2014 setuid scripts. */
2015 forbid_setid('x', suidscript);
f20b2998 2016 /* Hence you can't get here if suidscript is true */
faef540c 2017
2f9285f8 2018 find_beginning(linestr_sv, rsfp);
a52eba0e
NC		 2019 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2020 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2021 }
f4c556ac 2022 }
6224f72b 2023
ea726b52 2024 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS		 2025 CvUNIQUE_on(PL_compcv);
2026
dd2155a4 2027 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2028
dd69841b
BB		 2029 PL_isarev = newHV();
2030
0c4f7ff0 2031 boot_core_PerlIO();
6224f72b 2032 boot_core_UNIVERSAL();
e1a479c5 2033 boot_core_mro();
4a5df386 2034 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS		 2035
2036 if (xsinit)
acfe0abc 2037 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2038#ifndef PERL_MICRO
d0d72822 2039#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2040 init_os_extras();
6224f72b 2041#endif
64ca3a65 2042#endif
6224f72b 2043
29209bc5 2044#ifdef USE_SOCKS
1b9c9cf5
DH		 2045# ifdef HAS_SOCKS5_INIT
2046 socks5_init(argv[0]);
2047# else
29209bc5 2048 SOCKSinit(argv[0]);
1b9c9cf5 2049# endif
ac27b0f5 2050#endif
29209bc5 2051
6224f72b
GS		 2052 init_predump_symbols();
2053 /* init_postdump_symbols not currently designed to be called */
2054 /* more than once (ENV isn't cleared first, for example) */
2055 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2056 if (!PL_do_undump)
6224f72b
GS		 2057 init_postdump_symbols(argc,argv,env);
2058
27da23d5
JH		 2059 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2060 * or explicitly in some platforms.
085a54d9 2061 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2062 * look like the user wants to use UTF-8. */
a0fd4948 2063#if defined(__SYMBIAN32__)
27da23d5
JH		 2064 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2065#endif
e27b5b51 2066# ifndef PERL_IS_MINIPERL
06e66572
JH		 2067 if (PL_unicode) {
2068 /* Requires init_predump_symbols(). */
a05d7ebb 2069 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH		 2070 IO* io;
2071 PerlIO* fp;
2072 SV* sv;
2073
a05d7ebb 2074 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2075 * and the default open disciplines. */
a05d7ebb
JH		 2076 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2077 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2078 (fp = IoIFP(io)))
2079 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2080 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2081 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2082 (fp = IoOFP(io)))
2083 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2084 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2085 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2086 (fp = IoOFP(io)))
2087 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2088 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC		 2089 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2090 SVt_PV)))) {
a05d7ebb
JH		 2091 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2092 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2093 if (in) {
2094 if (out)
76f68e9b 2095 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2096 else
76f68e9b 2097 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH		 2098 }
2099 else if (out)
76f68e9b 2100 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH		 2101 SvSETMAGIC(sv);
2102 }
b310b053
JH		 2103 }
2104 }
e27b5b51 2105#endif
b310b053 2106
c7030b81
NC		 2107 {
2108 const char *s;
4ffa73a3
JH		 2109 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2110 if (strEQ(s, "unsafe"))
2111 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2112 else if (strEQ(s, "safe"))
2113 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2114 else
2115 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2116 }
c7030b81 2117 }
4ffa73a3 2118
81d86705 2119#ifdef PERL_MAD
c7030b81
NC		 2120 {
2121 const char *s;
81d86705
NC		 2122 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2123 PL_madskills = 1;
2124 PL_minus_c = 1;
2125 if (!s || !s[0])
2126 PL_xmlfp = PerlIO_stdout();
2127 else {
2128 PL_xmlfp = PerlIO_open(s, "w");
2129 if (!PL_xmlfp)
2130 Perl_croak(aTHX_ "Can't open %s", s);
2131 }
1a9a51d4 2132 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2133 }
c7030b81
NC		 2134 }
2135
2136 {
2137 const char *s;
81d86705
NC		 2138 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2139 PL_madskills = atoi(s);
1a9a51d4 2140 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2141 }
c7030b81 2142 }
81d86705
NC		 2143#endif
2144
5486870f 2145 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2146 PL_subname = newSVpvs("main");
6224f72b 2147
5486870f
DM		 2148 if (add_read_e_script)
2149 filter_add(read_e_script, NULL);
2150
6224f72b
GS		 2151 /* now parse the script */
2152
93189314 2153 SETERRNO(0,SS_NORMAL);
13765c85 2154 if (yyparse() || PL_parser->error_count) {
3280af22 2155 if (PL_minus_c)
cea2e8a9 2156 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2157 else {
cea2e8a9 2158 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2159 PL_origfilename);
6224f72b
GS		 2160 }
2161 }
57843af0 2162 CopLINE_set(PL_curcop, 0);
3280af22 2163 PL_curstash = PL_defstash;
3280af22
NIS		 2164 if (PL_e_script) {
2165 SvREFCNT_dec(PL_e_script);
a0714e2c 2166 PL_e_script = NULL;
6224f72b
GS		 2167 }
2168
3280af22 2169 if (PL_do_undump)
6224f72b
GS		 2170 my_unexec();
2171
57843af0
GS		 2172 if (isWARN_ONCE) {
2173 SAVECOPFILE(PL_curcop);
2174 SAVECOPLINE(PL_curcop);
3280af22 2175 gv_check(PL_defstash);
57843af0 2176 }
6224f72b
GS		 2177
2178 LEAVE;
2179 FREETMPS;
2180
2181#ifdef MYMALLOC
f6a607bc
RGS		 2182 {
2183 const char *s;
6224f72b
GS		 2184 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2185 dump_mstats("after compilation:");
f6a607bc 2186 }
6224f72b
GS		 2187#endif
2188
2189 ENTER;
3280af22 2190 PL_restartop = 0;
312caa8e 2191 return NULL;
6224f72b
GS		 2192}
2193
954c1994
GS		 2194/*
2195=for apidoc perl_run
2196
2197Tells a Perl interpreter to run. See L<perlembed>.
2198
2199=cut
2200*/
2201
6224f72b 2202int
0cb96387 2203perl_run(pTHXx)
6224f72b 2204{
97aff369 2205 dVAR;
6224f72b 2206 I32 oldscope;
14dd3ad8 2207 int ret = 0;
db36c5a1 2208 dJMPENV;
6224f72b 2209
7918f24d
NC		 2210 PERL_ARGS_ASSERT_PERL_RUN;
2211#ifndef MULTIPLICITY
ed6c66dd 2212 PERL_UNUSED_ARG(my_perl);
7918f24d 2213#endif
9d4ba2ae 2214
3280af22 2215 oldscope = PL_scopestack_ix;
96e176bf
CL		 2216#ifdef VMS
2217 VMSISH_HUSHED = 0;
2218#endif
6224f72b 2219
14dd3ad8 2220 JMPENV_PUSH(ret);
6224f72b
GS		 2221 switch (ret) {
2222 case 1:
2223 cxstack_ix = -1; /* start context stack again */
312caa8e 2224 goto redo_body;
14dd3ad8 2225 case 0: /* normal completion */
14dd3ad8
GS		 2226 redo_body:
2227 run_body(oldscope);
14dd3ad8
GS		 2228 /* FALL THROUGH */
2229 case 2: /* my_exit() */
3280af22 2230 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 2231 LEAVE;
2232 FREETMPS;
3280af22 2233 PL_curstash = PL_defstash;
3a1ee7e8 2234 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB		 2235 PL_endav && !PL_minus_c)
2236 call_list(oldscope, PL_endav);
6224f72b
GS		 2237#ifdef MYMALLOC
2238 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2239 dump_mstats("after execution: ");
2240#endif
37038d91 2241 ret = STATUS_EXIT;
14dd3ad8 2242 break;
6224f72b 2243 case 3:
312caa8e
CS		 2244 if (PL_restartop) {
2245 POPSTACK_TO(PL_mainstack);
2246 goto redo_body;
6224f72b 2247 }
bf49b057 2248 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2249 FREETMPS;
14dd3ad8
GS		 2250 ret = 1;
2251 break;
6224f72b
GS		 2252 }
2253
14dd3ad8
GS		 2254 JMPENV_POP;
2255 return ret;
312caa8e
CS		 2256}
2257
dd374669 2258STATIC void
14dd3ad8
GS		 2259S_run_body(pTHX_ I32 oldscope)
2260{
97aff369 2261 dVAR;
6224f72b 2262 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2263 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2264
3280af22 2265 if (!PL_restartop) {
81d86705
NC		 2266#ifdef PERL_MAD
2267 if (PL_xmlfp) {
2268 xmldump_all();
2269 exit(0); /* less likely to core dump than my_exit(0) */
2270 }
2271#endif
cf2782cd 2272#ifdef DEBUGGING
f0e3f042
CS		 2273 if (DEBUG_x_TEST || DEBUG_B_TEST)
2274 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC		 2275 if (!DEBUG_q_TEST)
2276 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2277#endif
6224f72b 2278
3280af22 2279 if (PL_minus_c) {
bf49b057 2280 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS		 2281 my_exit(0);
2282 }
3280af22 2283 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2284 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 2285 if (PL_initav)
2286 call_list(oldscope, PL_initav);
f1fac472
NC		 2287#ifdef PERL_DEBUG_READONLY_OPS
2288 Perl_pending_Slabs_to_ro(aTHX);
2289#endif
6224f72b
GS		 2290 }
2291
2292 /* do it */
2293
3280af22 2294 if (PL_restartop) {
533c011a 2295 PL_op = PL_restartop;
3280af22 2296 PL_restartop = 0;
cea2e8a9 2297 CALLRUNOPS(aTHX);
6224f72b 2298 }
3280af22
NIS		 2299 else if (PL_main_start) {
2300 CvDEPTH(PL_main_cv) = 1;
533c011a 2301 PL_op = PL_main_start;
cea2e8a9 2302 CALLRUNOPS(aTHX);
6224f72b 2303 }
f6b3007c
JH		 2304 my_exit(0);
2305 /* NOTREACHED */
6224f72b
GS		 2306}
2307
954c1994 2308/*
ccfc67b7
JH		 2309=head1 SV Manipulation Functions
2310
954c1994
GS		 2311=for apidoc p||get_sv
2312
64ace3f8
NC		 2313Returns the SV of the specified Perl scalar. C<flags> are passed to
2314C<gv_fetchpv>. If C<GV_ADD> is set and the
2315Perl variable does not exist then it will be created. If C<flags> is zero
2316and the variable does not exist then NULL is returned.
954c1994
GS		 2317
2318=cut
2319*/
2320
6224f72b 2321SV*
64ace3f8 2322Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS		 2323{
2324 GV *gv;
7918f24d
NC		 2325
2326 PERL_ARGS_ASSERT_GET_SV;
2327
64ace3f8 2328 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS		 2329 if (gv)
2330 return GvSV(gv);
a0714e2c 2331 return NULL;
6224f72b
GS		 2332}
2333
954c1994 2334/*
ccfc67b7
JH		 2335=head1 Array Manipulation Functions
2336
954c1994
GS		 2337=for apidoc p||get_av
2338
cbfd0a87
NC		 2339Returns the AV of the specified Perl array. C<flags> are passed to
2340C<gv_fetchpv>. If C<GV_ADD> is set and the
2341Perl variable does not exist then it will be created. If C<flags> is zero
2342and the variable does not exist then NULL is returned.
954c1994
GS		 2343
2344=cut
2345*/
2346
6224f72b 2347AV*
cbfd0a87 2348Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2349{
cbfd0a87 2350 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC		 2351
2352 PERL_ARGS_ASSERT_GET_AV;
2353
cbfd0a87 2354 if (flags)
6224f72b
GS		 2355 return GvAVn(gv);
2356 if (gv)
2357 return GvAV(gv);
7d49f689 2358 return NULL;
6224f72b
GS		 2359}
2360
954c1994 2361/*
ccfc67b7
JH		 2362=head1 Hash Manipulation Functions
2363
954c1994
GS		 2364=for apidoc p||get_hv
2365
6673a63c
NC		 2366Returns the HV of the specified Perl hash. C<flags> are passed to
2367C<gv_fetchpv>. If C<GV_ADD> is set and the
2368Perl variable does not exist then it will be created. If C<flags> is zero
2369and the variable does not exist then NULL is returned.
954c1994
GS		 2370
2371=cut
2372*/
2373
6224f72b 2374HV*
6673a63c 2375Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2376{
6673a63c 2377 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC		 2378
2379 PERL_ARGS_ASSERT_GET_HV;
2380
6673a63c 2381 if (flags)
a0d0e21e
LW		 2382 return GvHVn(gv);
2383 if (gv)
2384 return GvHV(gv);
5c284bb0 2385 return NULL;
a0d0e21e
LW		 2386}
2387
954c1994 2388/*
ccfc67b7
JH		 2389=head1 CV Manipulation Functions
2390
780a5241
NC		 2391=for apidoc p||get_cvn_flags
2392
2393Returns the CV of the specified Perl subroutine. C<flags> are passed to
2394C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2395exist then it will be declared (which has the same effect as saying
2396C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2397then NULL is returned.
2398
954c1994
GS		 2399=for apidoc p||get_cv
2400
780a5241 2401Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS		 2402
2403=cut
2404*/
2405
a0d0e21e 2406CV*
780a5241 2407Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2408{
780a5241 2409 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS		 2410 /* XXX this is probably not what they think they're getting.
2411 * It has the same effect as "sub name;", i.e. just a forward
2412 * declaration! */
7918f24d
NC		 2413
2414 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2415
780a5241 2416 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2417 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2418 return newSUB(start_subparse(FALSE, 0),
780a5241 2419 newSVOP(OP_CONST, 0, sv),
5f66b61c 2420 NULL, NULL);
780a5241 2421 }
a0d0e21e 2422 if (gv)
8ebc5c01 2423 return GvCVu(gv);
601f1833 2424 return NULL;
a0d0e21e
LW		 2425}
2426
2c67934f
NC		 2427/* Nothing in core calls this now, but we can't replace it with a macro and
2428 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC		 2429CV*
2430Perl_get_cv(pTHX_ const char *name, I32 flags)
2431{
7918f24d
NC		 2432 PERL_ARGS_ASSERT_GET_CV;
2433
780a5241
NC		 2434 return get_cvn_flags(name, strlen(name), flags);
2435}
2436
79072805
LW		 2437/* Be sure to refetch the stack pointer after calling these routines. */
2438
954c1994 2439/*
ccfc67b7
JH		 2440
2441=head1 Callback Functions
2442
954c1994
GS		 2443=for apidoc p||call_argv
2444
2445Performs a callback to the specified Perl sub. See L<perlcall>.
2446
2447=cut
2448*/
2449
a0d0e21e 2450I32
8f42b153 2451Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2452
8ac85365
NIS		 2453 /* See G_* flags in cop.h */
2454 /* null terminated arg list */
8990e307 2455{
97aff369 2456 dVAR;
a0d0e21e 2457 dSP;
8990e307 2458
7918f24d
NC		 2459 PERL_ARGS_ASSERT_CALL_ARGV;
2460
924508f0 2461 PUSHMARK(SP);
a0d0e21e 2462 if (argv) {
8990e307 2463 while (*argv) {
6e449a3a 2464 mXPUSHs(newSVpv(*argv,0));
8990e307
LW		 2465 argv++;
2466 }
a0d0e21e 2467 PUTBACK;
8990e307 2468 }
864dbfa3 2469 return call_pv(sub_name, flags);
8990e307
LW		 2470}
2471
954c1994
GS		 2472/*
2473=for apidoc p||call_pv
2474
2475Performs a callback to the specified Perl sub. See L<perlcall>.
2476
2477=cut
2478*/
2479
a0d0e21e 2480I32
864dbfa3 2481Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 2482 /* name of the subroutine */
2483 /* See G_* flags in cop.h */
a0d0e21e 2484{
7918f24d
NC		 2485 PERL_ARGS_ASSERT_CALL_PV;
2486
0da0e728 2487 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW		 2488}
2489
954c1994
GS		 2490/*
2491=for apidoc p||call_method
2492
2493Performs a callback to the specified Perl method. The blessed object must
2494be on the stack. See L<perlcall>.
2495
2496=cut
2497*/
2498
a0d0e21e 2499I32
864dbfa3 2500Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 2501 /* name of the subroutine */
2502 /* See G_* flags in cop.h */
a0d0e21e 2503{
46ca9bac 2504 STRLEN len;
7918f24d
NC		 2505 PERL_ARGS_ASSERT_CALL_METHOD;
2506
46ca9bac
GF		 2507 len = strlen(methname);
2508
2509 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2510 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW		 2511}
2512
2513/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 2514/*
2515=for apidoc p||call_sv
2516
2517Performs a callback to the Perl sub whose name is in the SV. See
2518L<perlcall>.
2519
2520=cut
2521*/
2522
a0d0e21e 2523I32
001d637e 2524Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2525 /* See G_* flags in cop.h */
a0d0e21e 2526{
27da23d5 2527 dVAR; dSP;
a0d0e21e 2528 LOGOP myop; /* fake syntax tree node */
968b3946 2529 UNOP method_op;
aa689395 2530 I32 oldmark;
8ea43dc8 2531 VOL I32 retval = 0;
a0d0e21e 2532 I32 oldscope;
54310121 2533 bool oldcatch = CATCH_GET;
6224f72b 2534 int ret;
c4420975 2535 OP* const oldop = PL_op;
db36c5a1 2536 dJMPENV;
1e422769 2537
7918f24d
NC		 2538 PERL_ARGS_ASSERT_CALL_SV;
2539
a0d0e21e
LW		 2540 if (flags & G_DISCARD) {
2541 ENTER;
2542 SAVETMPS;
2543 }
2f8edad0
NC		 2544 if (!(flags & G_WANT)) {
2545 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2546 */
2547 flags |= G_SCALAR;
2548 }
a0d0e21e 2549
aa689395 2550 Zero(&myop, 1, LOGOP);
5f66b61c 2551 myop.op_next = NULL;
f51d4af5 2552 if (!(flags & G_NOARGS))
aa689395 2553 myop.op_flags |= OPf_STACKED;
4f911530 2554 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2555 SAVEOP();
533c011a 2556 PL_op = (OP*)&myop;
aa689395 2557
3280af22
NIS		 2558 EXTEND(PL_stack_sp, 1);
2559 *++PL_stack_sp = sv;
aa689395 2560 oldmark = TOPMARK;
3280af22 2561 oldscope = PL_scopestack_ix;
a0d0e21e 2562
3280af22 2563 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2564 /* Handle first BEGIN of -d. */
3280af22 2565 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 2566 /* Try harder, since this may have been a sighandler, thus
2567 * curstash may be meaningless. */
ea726b52 2568 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2569 && !(flags & G_NODEBUG))
533c011a 2570 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2571
968b3946
GS		 2572 if (flags & G_METHOD) {
2573 Zero(&method_op, 1, UNOP);
2574 method_op.op_next = PL_op;
2575 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2576 method_op.op_type = OP_METHOD;
968b3946 2577 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2578 myop.op_type = OP_ENTERSUB;
f39d0b86 2579 PL_op = (OP*)&method_op;
968b3946
GS		 2580 }
2581
312caa8e 2582 if (!(flags & G_EVAL)) {
0cdb2077 2583 CATCH_SET(TRUE);
d6f07c05 2584 CALL_BODY_SUB((OP*)&myop);
312caa8e 2585 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2586 CATCH_SET(oldcatch);
312caa8e
CS		 2587 }
2588 else {
d78bda3d 2589 myop.op_other = (OP*)&myop;
3280af22 2590 PL_markstack_ptr--;
edb2152a 2591 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2592 PL_markstack_ptr++;
a0d0e21e 2593
14dd3ad8 2594 JMPENV_PUSH(ret);
edb2152a 2595
6224f72b
GS		 2596 switch (ret) {
2597 case 0:
14dd3ad8 2598 redo_body:
d6f07c05 2599 CALL_BODY_SUB((OP*)&myop);
312caa8e 2600 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2601 if (!(flags & G_KEEPERR)) {
ab69dbc2 2602 CLEAR_ERRSV();
8433848b 2603 }
a0d0e21e 2604 break;
6224f72b 2605 case 1:
f86702cc 2606 STATUS_ALL_FAILURE;
a0d0e21e 2607 /* FALL THROUGH */
6224f72b 2608 case 2:
a0d0e21e 2609 /* my_exit() was called */
3280af22 2610 PL_curstash = PL_defstash;
a0d0e21e 2611 FREETMPS;
14dd3ad8 2612 JMPENV_POP;
f86702cc 2613 my_exit_jump();
a0d0e21e 2614 /* NOTREACHED */
6224f72b 2615 case 3:
3280af22 2616 if (PL_restartop) {
533c011a 2617 PL_op = PL_restartop;
3280af22 2618 PL_restartop = 0;
312caa8e 2619 goto redo_body;
a0d0e21e 2620 }
3280af22 2621 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2622 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW		 2623 retval = 0;
2624 else {
2625 retval = 1;
3280af22 2626 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2627 }
312caa8e 2628 break;
a0d0e21e 2629 }
a0d0e21e 2630
edb2152a
NC		 2631 if (PL_scopestack_ix > oldscope)
2632 delete_eval_scope();
14dd3ad8 2633 JMPENV_POP;
a0d0e21e 2634 }
1e422769 2635
a0d0e21e 2636 if (flags & G_DISCARD) {
3280af22 2637 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 2638 retval = 0;
2639 FREETMPS;
2640 LEAVE;
2641 }
533c011a 2642 PL_op = oldop;
a0d0e21e
LW		 2643 return retval;
2644}
2645
6e72f9df 2646/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2647
954c1994
GS		 2648/*
2649=for apidoc p||eval_sv
2650
2651Tells Perl to C<eval> the string in the SV.
2652
2653=cut
2654*/
2655
a0d0e21e 2656I32
864dbfa3 2657Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2658
8ac85365 2659 /* See G_* flags in cop.h */
a0d0e21e 2660{
97aff369 2661 dVAR;
924508f0 2662 dSP;
a0d0e21e 2663 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP		 2664 VOL I32 oldmark = SP - PL_stack_base;
2665 VOL I32 retval = 0;
6224f72b 2666 int ret;
c4420975 2667 OP* const oldop = PL_op;
db36c5a1 2668 dJMPENV;
84902520 2669
7918f24d
NC		 2670 PERL_ARGS_ASSERT_EVAL_SV;
2671
4633a7c4
LW		 2672 if (flags & G_DISCARD) {
2673 ENTER;
2674 SAVETMPS;
2675 }
2676
462e5cf6 2677 SAVEOP();
533c011a
NIS		 2678 PL_op = (OP*)&myop;
2679 Zero(PL_op, 1, UNOP);
3280af22
NIS		 2680 EXTEND(PL_stack_sp, 1);
2681 *++PL_stack_sp = sv;
79072805 2682
4633a7c4
LW		 2683 if (!(flags & G_NOARGS))
2684 myop.op_flags = OPf_STACKED;
5f66b61c 2685 myop.op_next = NULL;
6e72f9df 2686 myop.op_type = OP_ENTEREVAL;
4f911530 2687 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df 2688 if (flags & G_KEEPERR)
2689 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2690
dedbcade
DM		 2691 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2692 * before a PUSHEVAL, which corrupts the stack after a croak */
2693 TAINT_PROPER("eval_sv()");
2694
14dd3ad8 2695 JMPENV_PUSH(ret);
6224f72b
GS		 2696 switch (ret) {
2697 case 0:
14dd3ad8 2698 redo_body:
d6f07c05 2699 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2700 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2701 if (!(flags & G_KEEPERR)) {
ab69dbc2 2702 CLEAR_ERRSV();
8433848b 2703 }
4633a7c4 2704 break;
6224f72b 2705 case 1:
f86702cc 2706 STATUS_ALL_FAILURE;
4633a7c4 2707 /* FALL THROUGH */
6224f72b 2708 case 2:
4633a7c4 2709 /* my_exit() was called */
3280af22 2710 PL_curstash = PL_defstash;
4633a7c4 2711 FREETMPS;
14dd3ad8 2712 JMPENV_POP;
f86702cc 2713 my_exit_jump();
4633a7c4 2714 /* NOTREACHED */
6224f72b 2715 case 3:
3280af22 2716 if (PL_restartop) {
533c011a 2717 PL_op = PL_restartop;
3280af22 2718 PL_restartop = 0;
312caa8e 2719 goto redo_body;
4633a7c4 2720 }
3280af22 2721 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2722 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW		 2723 retval = 0;
2724 else {
2725 retval = 1;
3280af22 2726 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2727 }
312caa8e 2728 break;
4633a7c4
LW		 2729 }
2730
14dd3ad8 2731 JMPENV_POP;
4633a7c4 2732 if (flags & G_DISCARD) {
3280af22 2733 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2734 retval = 0;
2735 FREETMPS;
2736 LEAVE;
2737 }
533c011a 2738 PL_op = oldop;
4633a7c4
LW		 2739 return retval;
2740}
2741
954c1994
GS		 2742/*
2743=for apidoc p||eval_pv
2744
2745Tells Perl to C<eval> the given string and return an SV* result.
2746
2747=cut
2748*/
2749
137443ea 2750SV*
864dbfa3 2751Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2752{
97aff369 2753 dVAR;
137443ea 2754 dSP;
2755 SV* sv = newSVpv(p, 0);
2756
7918f24d
NC		 2757 PERL_ARGS_ASSERT_EVAL_PV;
2758
864dbfa3 2759 eval_sv(sv, G_SCALAR);
137443ea 2760 SvREFCNT_dec(sv);
2761
2762 SPAGAIN;
2763 sv = POPs;
2764 PUTBACK;
2765
2d8e6c8d 2766 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2767 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2768 }
137443ea 2769
2770 return sv;
2771}
2772
4633a7c4
LW		 2773/* Require a module. */
2774
954c1994 2775/*
ccfc67b7
JH		 2776=head1 Embedding Functions
2777
954c1994
GS		 2778=for apidoc p||require_pv
2779
7d3fb230
BS		 2780Tells Perl to C<require> the file named by the string argument. It is
2781analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2782implemented that way; consider using load_module instead.
954c1994 2783
7d3fb230 2784=cut */
954c1994 2785
4633a7c4 2786void
864dbfa3 2787Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2788{
97aff369 2789 dVAR;
d3acc0f7 2790 dSP;
97aff369 2791 SV* sv;
7918f24d
NC		 2792
2793 PERL_ARGS_ASSERT_REQUIRE_PV;
2794
e788e7d3 2795 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2796 PUTBACK;
be41e5d9
NC		 2797 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2798 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP		 2799 SPAGAIN;
2800 POPSTACK;
79072805
LW		 2801}
2802
76e3520e 2803STATIC void
e1ec3a88 2804S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2805{
ab821d7f 2806 /* This message really ought to be max 23 lines.
75c72d73 2807 * Removed -h because the user already knows that option. Others? */
fb73857a 2808
27da23d5 2809 static const char * const usage_msg[] = {
aefc56c5 2810"-0[octal] specify record separator (\\0, if no argument)",
aefc56c5
SF		 2811"-a autosplit mode with -n or -p (splits $_ into @F)",
2812"-C[number/list] enables the listed Unicode features",
2813"-c check syntax only (runs BEGIN and CHECK blocks)",
2814"-d[:debugger] run program under debugger",
2815"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2816"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2817"-E program like -e, but enables all optional features",
aefc56c5 2818"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF		 2819"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2820"-i[extension] edit <> files in place (makes backup if extension supplied)",
2821"-Idirectory specify @INC/#include directory (several -I's allowed)",
2822"-l[octal] enable line ending processing, specifies line terminator",
2823"-[mM][-]module execute \"use/no module...\" before executing program",
2824"-n assume \"while (<>) { ... }\" loop around program",
2825"-p assume loop like -n but print line also, like sed",
aefc56c5
SF		 2826"-s enable rudimentary parsing for switches after programfile",
2827"-S look for programfile using PATH environment variable",
2828"-t enable tainting warnings",
2829"-T enable tainting checks",
2830"-u dump core after parsing program",
2831"-U allow unsafe operations",
2832"-v print version, subversion (includes VERY IMPORTANT perl info)",
2833"-V[:variable] print configuration summary (or a single Config.pm variable)",
2834"-w enable many useful warnings (RECOMMENDED)",
2835"-W enable all warnings",
2836"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2837"-X disable all warnings",
fb73857a 2838"\n",
2839NULL
2840};
27da23d5 2841 const char * const *p = usage_msg;
fb73857a 2842
7918f24d
NC		 2843 PERL_ARGS_ASSERT_USAGE;
2844
b0e47665
GS		 2845 PerlIO_printf(PerlIO_stdout(),
2846 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2847 name);
fb73857a 2848 while (*p)
b0e47665 2849 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2850}
2851
b4ab917c
DM		 2852/* convert a string of -D options (or digits) into an int.
2853 * sets *s to point to the char after the options */
2854
2855#ifdef DEBUGGING
2856int
e1ec3a88 2857Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2858{
27da23d5 2859 static const char * const usage_msgd[] = {
e6e64d9b
JC		 2860 " Debugging flag values: (see also -d)",
2861 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2862 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC		 2863 " l Context (loop) stack processing",
2864 " t Trace execution",
2865 " o Method and overloading resolution",
2866 " c String/numeric conversions",
4c84d7f2 2867 " P Print profiling info, source file input state",
d7a2c63c 2868 " m Memory and SV allocation",
e6e64d9b
JC		 2869 " f Format processing",
2870 " r Regular expression parsing and execution",
2871 " x Syntax tree dump",
3679267a 2872 " u Tainting checks",
e6e64d9b
JC		 2873 " H Hash dump -- usurps values()",
2874 " X Scratchpad allocation",
2875 " D Cleaning up",
e6e64d9b
JC		 2876 " T Tokenising",
2877 " R Include reference counts of dumped variables (eg when using -Ds)",
2878 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2879 " v Verbose: use in conjunction with other flags",
2880 " C Copy On Write",
2881 " A Consistency checks on internal structures",
3679267a 2882 " q quiet - currently only suppresses the 'EXECUTING' message",
d7c0d282 2883 " M trace smart match resolution",
cc8773c0 2884 " B dump suBroutine definitions, including special Blocks like BEGIN",
e6e64d9b
JC		 2885 NULL
2886 };
b4ab917c 2887 int i = 0;
7918f24d
NC		 2888
2889 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2890
b4ab917c
DM		 2891 if (isALPHA(**s)) {
2892 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2893 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM		 2894
2895 for (; isALNUM(**s); (*s)++) {
c4420975 2896 const char * const d = strchr(debopts,**s);
b4ab917c
DM		 2897 if (d)
2898 i |= 1 << (d - debopts);
2899 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC		 2900 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2901 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM		 2902 }
2903 }
e6e64d9b 2904 else if (isDIGIT(**s)) {
b4ab917c
DM		 2905 i = atoi(*s);
2906 for (; isALNUM(**s); (*s)++) ;
2907 }
ddcf8bc1 2908 else if (givehelp) {
06e869a4 2909 const char *const *p = usage_msgd;
e6e64d9b
JC		 2910 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2911 }
b4ab917c
DM		 2912# ifdef EBCDIC
2913 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2914 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2915 "-Dp not implemented on this platform\n");
2916# endif
2917 return i;
2918}
2919#endif
2920
79072805
LW		 2921/* This routine handles any switches that can be given during run */
2922
c7030b81
NC		 2923const char *
2924Perl_moreswitches(pTHX_ const char *s)
79072805 2925{
27da23d5 2926 dVAR;
84c133a0 2927 UV rschar;
0544e6df 2928 const char option = *s; /* used to remember option in -m/-M code */
79072805 2929
7918f24d
NC		 2930 PERL_ARGS_ASSERT_MORESWITCHES;
2931
79072805
LW		 2932 switch (*s) {
2933 case '0':
a863c7d1 2934 {
f2095865 2935 I32 flags = 0;
a3b680e6 2936 STRLEN numlen;
f2095865
JH		 2937
2938 SvREFCNT_dec(PL_rs);
2939 if (s[1] == 'x' && s[2]) {
a3b680e6 2940 const char *e = s+=2;
f2095865
JH		 2941 U8 *tmps;
2942
a3b680e6
AL		 2943 while (*e)
2944 e++;
f2095865
JH		 2945 numlen = e - s;
2946 flags = PERL_SCAN_SILENT_ILLDIGIT;
2947 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2948 if (s + numlen < e) {
2949 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2950 numlen = 0;
2951 s--;
2952 }
396482e1 2953 PL_rs = newSVpvs("");
c5661c80 2954 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH		 2955 tmps = (U8*)SvPVX(PL_rs);
2956 uvchr_to_utf8(tmps, rschar);
2957 SvCUR_set(PL_rs, UNISKIP(rschar));
2958 SvUTF8_on(PL_rs);
2959 }
2960 else {
2961 numlen = 4;
2962 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2963 if (rschar & ~((U8)~0))
2964 PL_rs = &PL_sv_undef;
2965 else if (!rschar && numlen >= 2)
396482e1 2966 PL_rs = newSVpvs("");
f2095865
JH		 2967 else {
2968 char ch = (char)rschar;
2969 PL_rs = newSVpvn(&ch, 1);
2970 }
2971 }
64ace3f8 2972 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 2973 return s + numlen;
a863c7d1 2974 }
46487f74 2975 case 'C':
a05d7ebb 2976 s++;
dd374669 2977 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC		 2978 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
2979 PL_utf8cache = -1;
46487f74 2980 return s;
2304df62 2981 case 'F':
3280af22 2982 PL_minus_F = TRUE;
ebce5377
RGS		 2983 PL_splitstr = ++s;
2984 while (*s && !isSPACE(*s)) ++s;
e49e380e 2985 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 2986 return s;
79072805 2987 case 'a':
3280af22 2988 PL_minus_a = TRUE;
79072805
LW		 2989 s++;
2990 return s;
2991 case 'c':
3280af22 2992 PL_minus_c = TRUE;
79072805
LW		 2993 s++;
2994 return s;
2995 case 'd':
f20b2998 2996 forbid_setid('d', FALSE);
4633a7c4 2997 s++;
2cbb2ee1
RGS		 2998
2999 /* -dt indicates to the debugger that threads will be used */
3000 if (*s == 't' && !isALNUM(s[1])) {
3001 ++s;
3002 my_setenv("PERL5DB_THREADED", "1");
3003 }
3004
70c94a19
RR		 3005 /* The following permits -d:Mod to accepts arguments following an =
3006 in the fashion that -MSome::Mod does. */
3007 if (*s == ':' || *s == '=') {
f85893a1
NC		 3008 const char *start = ++s;
3009 const char *const end = s + strlen(s);
396482e1 3010 SV * const sv = newSVpvs("use Devel::");
f85893a1 3011
70c94a19
RR		 3012 /* We now allow -d:Module=Foo,Bar */
3013 while(isALNUM(*s) || *s==':') ++s;
3014 if (*s != '=')
f85893a1 3015 sv_catpvn(sv, start, end - start);
70c94a19
RR		 3016 else {
3017 sv_catpvn(sv, start, s-start);
95a2b409
RGS		 3018 /* Don't use NUL as q// delimiter here, this string goes in the
3019 * environment. */
3020 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3021 }
f85893a1 3022 s = end;
184f32ec 3023 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3024 SvREFCNT_dec(sv);
4633a7c4 3025 }
ed094faf 3026 if (!PL_perldb) {
3280af22 3027 PL_perldb = PERLDB_ALL;
a0d0e21e 3028 init_debugger();
ed094faf 3029 }
79072805
LW		 3030 return s;
3031 case 'D':
0453d815 3032 {
79072805 3033#ifdef DEBUGGING
f20b2998 3034 forbid_setid('D', FALSE);
b4ab917c 3035 s++;
dd374669 3036 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3037#else /* !DEBUGGING */
0453d815 3038 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3039 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3040 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3041 for (s++; isALNUM(*s); s++) ;
79072805 3042#endif
79072805 3043 return s;
0453d815 3044 }
4633a7c4 3045 case 'h':
ac27b0f5 3046 usage(PL_origargv[0]);
7ca617d0 3047 my_exit(0);
79072805 3048 case 'i':
43c5f42d 3049 Safefree(PL_inplace);
c030f24b
GH		 3050#if defined(__CYGWIN__) /* do backup extension automagically */
3051 if (*(s+1) == '\0') {
c86a4f2e 3052 PL_inplace = savepvs(".bak");
c030f24b
GH		 3053 return s+1;
3054 }
3055#endif /* __CYGWIN__ */
5ef5d758 3056 {
d4c19fe8 3057 const char * const start = ++s;
5ef5d758
NC		 3058 while (*s && !isSPACE(*s))
3059 ++s;
3060
3061 PL_inplace = savepvn(start, s - start);
3062 }
7b8d334a 3063 if (*s) {
5ef5d758 3064 ++s;
7b8d334a 3065 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3066 s++;
7b8d334a 3067 }
fb73857a 3068 return s;
4e49a025 3069 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3070 forbid_setid('I', FALSE);
fb73857a 3071 ++s;
3072 while (*s && isSPACE(*s))
3073 ++s;
3074 if (*s) {
c7030b81 3075 const char *e, *p;
0df16ed7
GS		 3076 p = s;
3077 /* ignore trailing spaces (possibly followed by other switches) */
3078 do {
3079 for (e = p; *e && !isSPACE(*e); e++) ;
3080 p = e;
3081 while (isSPACE(*p))
3082 p++;
3083 } while (*p && *p != '-');
55b4bc1c 3084 incpush(s, e-s,
e28f3139 3085 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS		 3086 s = p;
3087 if (*s == '-')
3088 s++;
79072805
LW		 3089 }
3090 else
a67e862a 3091 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3092 return s;
79072805 3093 case 'l':
3280af22 3094 PL_minus_l = TRUE;
79072805 3095 s++;
7889fe52
NIS		 3096 if (PL_ors_sv) {
3097 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3098 PL_ors_sv = NULL;
7889fe52 3099 }
79072805 3100 if (isDIGIT(*s)) {
53305cf1 3101 I32 flags = 0;
a3b680e6 3102 STRLEN numlen;
396482e1 3103 PL_ors_sv = newSVpvs("\n");
53305cf1
NC		 3104 numlen = 3 + (*s == '0');
3105 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 3106 s += numlen;
3107 }
3108 else {
8bfdd7d9 3109 if (RsPARA(PL_rs)) {
396482e1 3110 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS		 3111 }
3112 else {
8bfdd7d9 3113 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3114 }
79072805
LW		 3115 }
3116 return s;
1a30305b 3117 case 'M':
f20b2998 3118 forbid_setid('M', FALSE); /* XXX ? */
1a30305b 3119 /* FALL THROUGH */
3120 case 'm':
f20b2998 3121 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3122 if (*++s) {
c7030b81 3123 const char *start;
b64cb68c 3124 const char *end;
11343788 3125 SV *sv;
e1ec3a88 3126 const char *use = "use ";
0544e6df 3127 bool colon = FALSE;
a5f75d66 3128 /* -M-foo == 'no foo' */
d0043bd1
NC		 3129 /* Leading space on " no " is deliberate, to make both
3130 possibilities the same length. */
3131 if (*s == '-') { use = " no "; ++s; }
3132 sv = newSVpvn(use,4);
a5f75d66 3133 start = s;
1a30305b 3134 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB		 3135 while(isALNUM(*s) || *s==':') {
3136 if( *s++ == ':' ) {
3137 if( *s == ':' )
3138 s++;
3139 else
3140 colon = TRUE;
3141 }
3142 }
3143 if (s == start)
3144 Perl_croak(aTHX_ "Module name required with -%c option",
3145 option);
3146 if (colon)
3147 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3148 "contains single ':'",
63da6837 3149 (int)(s - start), start, option);
b64cb68c 3150 end = s + strlen(s);
c07a80fd 3151 if (*s != '=') {
b64cb68c 3152 sv_catpvn(sv, start, end - start);
0544e6df 3153 if (option == 'm') {
c07a80fd 3154 if (*s != '\0')
cea2e8a9 3155 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3156 sv_catpvs( sv, " ()");
c07a80fd 3157 }
3158 } else {
11343788 3159 sv_catpvn(sv, start, s-start);
b64cb68c
NC		 3160 /* Use NUL as q''-delimiter. */
3161 sv_catpvs(sv, " split(/,/,q\0");
3162 ++s;
3163 sv_catpvn(sv, s, end - s);
396482e1 3164 sv_catpvs(sv, "\0)");
c07a80fd 3165 }
b64cb68c 3166 s = end;
29a861e7 3167 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b 3168 }
3169 else
0544e6df 3170 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3171 return s;
79072805 3172 case 'n':
3280af22 3173 PL_minus_n = TRUE;
79072805
LW		 3174 s++;
3175 return s;
3176 case 'p':
3280af22 3177 PL_minus_p = TRUE;
79072805
LW		 3178 s++;
3179 return s;
3180 case 's':
f20b2998 3181 forbid_setid('s', FALSE);
3280af22 3182 PL_doswitches = TRUE;
79072805
LW		 3183 s++;
3184 return s;
6537fe72
MS		 3185 case 't':
3186 if (!PL_tainting)
22f7c9c9 3187 TOO_LATE_FOR('t');
6537fe72
MS		 3188 s++;
3189 return s;
463ee0b2 3190 case 'T':
3280af22 3191 if (!PL_tainting)
22f7c9c9 3192 TOO_LATE_FOR('T');
463ee0b2
LW		 3193 s++;
3194 return s;
79072805 3195 case 'u':
3280af22 3196 PL_do_undump = TRUE;
79072805
LW		 3197 s++;
3198 return s;
3199 case 'U':
3280af22 3200 PL_unsafe = TRUE;
79072805
LW		 3201 s++;
3202 return s;
3203 case 'v':
d7aa5382 3204 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3205 upg_version(PL_patchlevel, TRUE);
8e9464f1 3206#if !defined(DGUX)
46807d8e
YO		 3207 {
3208 SV* level= vstringify(PL_patchlevel);
3209#ifdef PERL_PATCHNUM
23d483e2
NC		 3210# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3211 SV *num = newSVpvs(PERL_PATCHNUM "*");
3212# else
3213 SV *num = newSVpvs(PERL_PATCHNUM);
3214# endif
46807d8e
YO		 3215
3216 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3217 SvREFCNT_dec(level);
3218 level= num;
3219 } else {
d0a9311f 3220 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO		 3221 SvREFCNT_dec(num);
3222 }
3223 #endif
3224 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG		 3225 "\nThis is perl " STRINGIFY(PERL_REVISION)
3226 ", version " STRINGIFY(PERL_VERSION)
3227 ", subversion " STRINGIFY(PERL_SUBVERSION)
3228 " (%"SVf") built for " ARCHNAME, level
3229 );
46807d8e
YO		 3230 SvREFCNT_dec(level);
3231 }
8e9464f1
JH		 3232#else /* DGUX */
3233/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3234 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3235 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3236 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH		 3237 PerlIO_printf(PerlIO_stdout(),
3238 Perl_form(aTHX_ " built under %s at %s %s\n",
3239 OSNAME, __DATE__, __TIME__));
3240 PerlIO_printf(PerlIO_stdout(),
3241 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3242 OSVERS));
8e9464f1 3243#endif /* !DGUX */
fb73857a 3244#if defined(LOCAL_PATCH_COUNT)
3245 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 3246 PerlIO_printf(PerlIO_stdout(),
3247 "\n(with %d registered patch%s, "
3248 "see perl -V for more detail)",
bb7a0f54 3249 LOCAL_PATCH_COUNT,
b0e47665 3250 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3251#endif
1a30305b 3252
b0e47665 3253 PerlIO_printf(PerlIO_stdout(),
737f4459 3254 "\n\nCopyright 1987-2009, Larry Wall\n");
79072805 3255#ifdef MSDOS
b0e47665
GS		 3256 PerlIO_printf(PerlIO_stdout(),
3257 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 3258#endif
3259#ifdef DJGPP
b0e47665
GS		 3260 PerlIO_printf(PerlIO_stdout(),
3261 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3262 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3263#endif
79072805 3264#ifdef OS2
b0e47665
GS		 3265 PerlIO_printf(PerlIO_stdout(),
3266 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3267 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3268#endif
79072805 3269#ifdef atarist
b0e47665
GS		 3270 PerlIO_printf(PerlIO_stdout(),
3271 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3272#endif
a3f9223b 3273#ifdef __BEOS__
b0e47665
GS		 3274 PerlIO_printf(PerlIO_stdout(),
3275 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3276#endif
1d84e8df 3277#ifdef MPE
b0e47665 3278 PerlIO_printf(PerlIO_stdout(),
e583a879 3279 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3280#endif
9d116dd7 3281#ifdef OEMVS
b0e47665
GS		 3282 PerlIO_printf(PerlIO_stdout(),
3283 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3284#endif
495c5fdc 3285#ifdef __VOS__
b0e47665 3286 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3287 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3288#endif
092bebab 3289#ifdef __OPEN_VM
b0e47665
GS		 3290 PerlIO_printf(PerlIO_stdout(),
3291 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3292#endif
a1a0e61e 3293#ifdef POSIX_BC
b0e47665
GS		 3294 PerlIO_printf(PerlIO_stdout(),
3295 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3296#endif
f83d2536 3297#ifdef EPOC
b0e47665 3298 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3299 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3300#endif
e1caacb4 3301#ifdef UNDER_CE
b475b3e6
JH		 3302 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3303 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH		 3304 wce_hitreturn();
3305#endif
a0fd4948 3306#ifdef __SYMBIAN32__
27da23d5
JH		 3307 PerlIO_printf(PerlIO_stdout(),
3308 "Symbian port by Nokia, 2004-2005\n");
3309#endif
baed7233
DL		 3310#ifdef BINARY_BUILD_NOTICE
3311 BINARY_BUILD_NOTICE;
3312#endif
b0e47665
GS		 3313 PerlIO_printf(PerlIO_stdout(),
3314 "\n\
79072805 3315Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3316GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3317Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3318this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3319Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3320 my_exit(0);
79072805 3321 case 'w':
b2e5e6ba 3322 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3323 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3324 }
599cee73
PM		 3325 s++;
3326 return s;
3327 case 'W':
ac27b0f5 3328 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3329 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3330 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3331 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 3332 s++;
3333 return s;
3334 case 'X':
ac27b0f5 3335 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3336 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3337 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3338 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 3339 s++;
3340 return s;
a0d0e21e 3341 case '*':
79072805 3342 case ' ':
d3133c89
NC		 3343 while( *s == ' ' )
3344 ++s;
3345 if (s[0] == '-') /* Additional switches on #! line. */
3346 return s+1;
79072805 3347 break;
a0d0e21e 3348 case '-':
79072805 3349 case 0:
51882d45 3350#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 3351 case '\r':
3352#endif
79072805
LW		 3353 case '\n':
3354 case '\t':
3355 break;
aa689395 3356#ifdef ALTERNATE_SHEBANG
3357 case 'S': /* OS/2 needs -S on "extproc" line. */
3358 break;
3359#endif
79072805 3360 default:
cea2e8a9 3361 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3362 }
bd61b366 3363 return NULL;
79072805
LW		 3364}
3365
3366/* compliments of Tom Christiansen */
3367
3368/* unexec() can be found in the Gnu emacs distribution */
ee580363 3369/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 3370
3371void
864dbfa3 3372Perl_my_unexec(pTHX)
79072805 3373{
b37c2d43 3374 PERL_UNUSED_CONTEXT;
79072805 3375#ifdef UNEXEC
b37c2d43
AL		 3376 SV * prog = newSVpv(BIN_EXP, 0);
3377 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3378 int status = 1;
79072805
LW		 3379 extern int etext;
3380
396482e1 3381 sv_catpvs(prog, "/perl");
396482e1 3382 sv_catpvs(file, ".perldump");
79072805 3383
ee580363
GS		 3384 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3385 /* unexec prints msg to stderr in case of failure */
6ad3d225 3386 PerlProc_exit(status);
79072805 3387#else
a5f75d66
AD		 3388# ifdef VMS
3389# include <lib$routines.h>
3390 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO		 3391# elif defined(WIN32) || defined(__CYGWIN__)
3392 Perl_croak(aTHX_ "dump is not supported");
aa689395 3393# else
79072805 3394 ABORT(); /* for use with undump */
aa689395 3395# endif
a5f75d66 3396#endif
79072805
LW		 3397}
3398
cb68f92d
GS		 3399/* initialize curinterp */
3400STATIC void
cea2e8a9 3401S_init_interp(pTHX)
cb68f92d 3402{
97aff369 3403 dVAR;
acfe0abc
GS		 3404#ifdef MULTIPLICITY
3405# define PERLVAR(var,type)
3406# define PERLVARA(var,n,type)
3407# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC		 3408# define PERLVARI(var,type,init) aTHX->var = init;
3409# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3410# else
acfe0abc
GS		 3411# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3412# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3413# endif
acfe0abc 3414# include "intrpvar.h"
acfe0abc
GS		 3415# undef PERLVAR
3416# undef PERLVARA
3417# undef PERLVARI
3418# undef PERLVARIC
3419#else
3420# define PERLVAR(var,type)
3421# define PERLVARA(var,n,type)
3422# define PERLVARI(var,type,init) PL_##var = init;
3423# define PERLVARIC(var,type,init) PL_##var = init;
3424# include "intrpvar.h"
acfe0abc
GS		 3425# undef PERLVAR
3426# undef PERLVARA
3427# undef PERLVARI
3428# undef PERLVARIC
cb68f92d
GS		 3429#endif
3430
46ab3289
NC		 3431 /* As these are inside a structure, PERLVARI isn't capable of initialising
3432 them */
6c3f0a89
NC		 3433 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3434 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS		 3435}
3436
76e3520e 3437STATIC void
cea2e8a9 3438S_init_main_stash(pTHX)
79072805 3439{
97aff369 3440 dVAR;
463ee0b2 3441 GV *gv;
6e72f9df 3442
3280af22 3443 PL_curstash = PL_defstash = newHV();
23579a14
NC		 3444 /* We know that the string "main" will be in the global shared string
3445 table, so it's a small saving to use it rather than allocate another
3446 8 bytes. */
18916d0d 3447 PL_curstname = newSVpvs_share("main");
fafc274c 3448 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC		 3449 /* If we hadn't caused another reference to "main" to be in the shared
3450 string table above, then it would be worth reordering these two,
3451 because otherwise all we do is delete "main" from it as a consequence
3452 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3453 SvREFCNT_dec(GvHV(gv));
23579a14 3454 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3455 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3456 SvREADONLY_on(gv);
fafc274c
NC		 3457 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3458 SVt_PVAV)));
5a5094bd 3459 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3460 GvMULTI_on(PL_incgv);
fafc274c 3461 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3462 GvMULTI_on(PL_hintgv);
fafc274c 3463 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3464 SvREFCNT_inc_simple_void(PL_defgv);
fafc274c 3465 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5a5094bd 3466 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3467 GvMULTI_on(PL_errgv);
fafc274c 3468 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22 3469 GvMULTI_on(PL_replgv);
cea2e8a9 3470 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC		 3471#ifdef PERL_DONT_CREATE_GVSV
3472 gv_SVadd(PL_errgv);
3473#endif
38a03e6e 3474 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
ab69dbc2 3475 CLEAR_ERRSV();
3280af22 3476 PL_curstash = PL_defstash;
11faa288 3477 CopSTASH_set(&PL_compiling, PL_defstash);
5c1737d1
NC		 3478 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3479 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3480 SVt_PVHV));
4633a7c4 3481 /* We must init $/ before switches are processed. */
64ace3f8 3482 sv_setpvs(get_sv("/", GV_ADD), "\n");
79072805
LW		 3483}
3484
fdf5d70d 3485STATIC int
2f352907 3486S_open_script(pTHX_ const char *scriptname, bool dosearch,
f20b2998 3487 bool *suidscript, PerlIO **rsfpp)
79072805 3488{
fdf5d70d 3489 int fdscript = -1;
27da23d5 3490 dVAR;
1b24ed4b 3491
7918f24d
NC		 3492 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3493
3280af22 3494 if (PL_e_script) {
8afc33d6 3495 PL_origfilename = savepvs("-e");
96436eeb 3496 }
6c4ab083
GS		 3497 else {
3498 /* if find_script() returns, it returns a malloc()-ed value */
dd374669 3499 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 3500
3501 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
e1ec3a88 3502 const char *s = scriptname + 8;
fdf5d70d 3503 fdscript = atoi(s);
6c4ab083
GS		 3504 while (isDIGIT(*s))
3505 s++;
3506 if (*s) {
ae3f3efd
PS		 3507 /* PSz 18 Feb 04
3508 * Tell apart "normal" usage of fdscript, e.g.
3509 * with bash on FreeBSD:
3510 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3511 * from usage in suidperl.
3512 * Does any "normal" usage leave garbage after the number???
3513 * Is it a mistake to use a similar /dev/fd/ construct for
3514 * suidperl?
3515 */
f20b2998 3516 *suidscript = TRUE;
ae3f3efd
PS		 3517 /* PSz 20 Feb 04
3518 * Be supersafe and do some sanity-checks.
3519 * Still, can we be sure we got the right thing?
3520 */
3521 if (*s != '/') {
3522 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3523 }
3524 if (! *(s+1)) {
3525 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3526 }
6c4ab083 3527 scriptname = savepv(s + 1);
3280af22 3528 Safefree(PL_origfilename);
dd374669 3529 PL_origfilename = (char *)scriptname;
6c4ab083
GS		 3530 }
3531 }
3532 }
3533
05ec9bb3 3534 CopFILE_free(PL_curcop);
57843af0 3535 CopFILE_set(PL_curcop, PL_origfilename);
770526c1 3536 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
dd374669 3537 scriptname = (char *)"";
fdf5d70d 3538 if (fdscript >= 0) {
2f9285f8 3539 *rsfpp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
1b24ed4b 3540# if defined(HAS_FCNTL) && defined(F_SETFD)
2f9285f8 3541 if (*rsfpp)
1b24ed4b 3542 /* ensure close-on-exec */
2f9285f8 3543 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
1b24ed4b 3544# endif
96436eeb 3545 }
79072805 3546 else if (!*scriptname) {
cdd8118e 3547 forbid_setid(0, *suidscript);
2f9285f8 3548 *rsfpp = PerlIO_stdin();
79072805 3549 }
96436eeb 3550 else {
9c12f1e5
RGS		 3551#ifdef FAKE_BIT_BUCKET
3552 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3553 * is called) and still have the "-e" work. (Believe it or not,
3554 * a /dev/null is required for the "-e" to work because source
3555 * filter magic is used to implement it. ) This is *not* a general
3556 * replacement for a /dev/null. What we do here is create a temp
3557 * file (an empty file), open up that as the script, and then
3558 * immediately close and unlink it. Close enough for jazz. */
3559#define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3560#define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3561#define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3562 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3563 FAKE_BIT_BUCKET_TEMPLATE
3564 };
3565 const char * const err = "Failed to create a fake bit bucket";
3566 if (strEQ(scriptname, BIT_BUCKET)) {
3567#ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3568 int tmpfd = mkstemp(tmpname);
3569 if (tmpfd > -1) {
3570 scriptname = tmpname;
3571 close(tmpfd);
3572 } else
3573 Perl_croak(aTHX_ err);
3574#else
3575# ifdef HAS_MKTEMP
3576 scriptname = mktemp(tmpname);
3577 if (!scriptname)
3578 Perl_croak(aTHX_ err);
3579# endif
3580#endif
3581 }
3582#endif
2f9285f8 3583 *rsfpp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
9c12f1e5
RGS		 3584#ifdef FAKE_BIT_BUCKET
3585 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3586 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3587 && strlen(scriptname) == sizeof(tmpname) - 1) {
3588 unlink(scriptname);
3589 }
3590 scriptname = BIT_BUCKET;
3591#endif
1b24ed4b 3592# if defined(HAS_FCNTL) && defined(F_SETFD)
2f9285f8 3593 if (*rsfpp)
1b24ed4b 3594 /* ensure close-on-exec */
2f9285f8 3595 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
1b24ed4b 3596# endif
96436eeb 3597 }
2f9285f8 3598 if (!*rsfpp) {
447218f8 3599 /* PSz 16 Sep 03 Keep neat error message */
b1681ed3
RGS		 3600 if (PL_e_script)
3601 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3602 else
3603 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3604 CopFILE(PL_curcop), Strerror(errno));
13281fa4 3605 }
fdf5d70d 3606 return fdscript;
79072805 3607}
8d063cd8 3608
7b89560d
JH		 3609/* Mention
3610 * I_SYSSTATVFS HAS_FSTATVFS
3611 * I_SYSMOUNT
c890dc6c 3612 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 3613 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3614 * here so that metaconfig picks them up. */
3615
104d25b7 3616
cc69b689 3617#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 3618/* Don't even need this function. */
cc69b689 3619#else
ec2019ad
NC		 3620STATIC void
3621S_validate_suid(pTHX_ PerlIO *rsfp)
3622{
7918f24d
NC		 3623 PERL_ARGS_ASSERT_VALIDATE_SUID;
3624
3280af22 3625 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a2e578da
MHM		 3626 dVAR;
3627
2f9285f8 3628 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
b28d0864 3629 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3630 ||
b28d0864 3631 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3632 )
b28d0864 3633 if (!PL_do_undump)
cea2e8a9 3634 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c 3635FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
a687059c 3636 /* not set-id, must be wrapped */
a687059c 3637 }
79072805 3638}
cc69b689 3639#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
13281fa4 3640
76e3520e 3641STATIC void
2f9285f8 3642S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
79072805 3643{
97aff369 3644 dVAR;
c7030b81 3645 const char *s;
dd374669 3646 register const char *s2;
33b78306 3647
7918f24d
NC		 3648 PERL_ARGS_ASSERT_FIND_BEGINNING;
3649
33b78306
LW		 3650 /* skip forward in input to the real script? */
3651
3280af22 3652 while (PL_doextract) {
2f9285f8 3653 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
cea2e8a9 3654 Perl_croak(aTHX_ "No Perl script found in input\n");
4f0c37ba
IZ		 3655 s2 = s;
3656 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
2f9285f8 3657 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3280af22 3658 PL_doextract = FALSE;
6e72f9df 3659 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3660 s2 = s;
3661 while (*s == ' ' || *s == '\t') s++;
3662 if (*s++ == '-') {
3792a11b
NC		 3663 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3664 || s2[-1] == '_') s2--;
6e72f9df 3665 if (strnEQ(s2-4,"perl",4))
97bd5664 3666 while ((s = moreswitches(s)))
155aba94 3667 ;
33b78306 3668 }
83025b21
LW		 3669 }
3670 }
3671}
3672
afe37c7d 3673
76e3520e 3674STATIC void
cea2e8a9 3675S_init_ids(pTHX)
352d5a3a 3676{
97aff369 3677 dVAR;
d8eceb89
JH		 3678 PL_uid = PerlProc_getuid();
3679 PL_euid = PerlProc_geteuid();
3680 PL_gid = PerlProc_getgid();
3681 PL_egid = PerlProc_getegid();
748a9306 3682#ifdef VMS
b28d0864
NIS		 3683 PL_uid |= PL_gid << 16;
3684 PL_euid |= PL_egid << 16;
748a9306 3685#endif
22f7c9c9
JH		 3686 /* Should not happen: */
3687 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3280af22 3688 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
ae3f3efd
PS		 3689 /* BUG */
3690 /* PSz 27 Feb 04
3691 * Should go by suidscript, not uid!=euid: why disallow
3692 * system("ls") in scripts run from setuid things?
3693 * Or, is this run before we check arguments and set suidscript?
3694 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3695 * (We never have suidscript, can we be sure to have fdscript?)
3696 * Or must then go by UID checks? See comments in forbid_setid also.
3697 */
748a9306 3698}
79072805 3699
a0643315
JH		 3700/* This is used very early in the lifetime of the program,
3701 * before even the options are parsed, so PL_tainting has
b0891165 3702 * not been initialized properly. */
af419de7 3703bool
8f42b153 3704Perl_doing_taint(int argc, char *argv[], char *envp[])
22f7c9c9 3705{
c3446a78
JH		 3706#ifndef PERL_IMPLICIT_SYS
3707 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3708 * before we have an interpreter-- and the whole point of this
3709 * function is to be called at such an early stage. If you are on
3710 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3711 * "tainted because running with altered effective ids', you'll
3712 * have to add your own checks somewhere in here. The two most
3713 * known samples of 'implicitness' are Win32 and NetWare, neither
3714 * of which has much of concept of 'uids'. */
af419de7 3715 int uid = PerlProc_getuid();
22f7c9c9 3716 int euid = PerlProc_geteuid();
af419de7 3717 int gid = PerlProc_getgid();
22f7c9c9 3718 int egid = PerlProc_getegid();
6867be6d 3719 (void)envp;
22f7c9c9
JH		 3720
3721#ifdef VMS
af419de7 3722 uid |= gid << 16;
22f7c9c9
JH		 3723 euid |= egid << 16;
3724#endif
3725 if (uid && (euid != uid || egid != gid))
3726 return 1;
c3446a78 3727#endif /* !PERL_IMPLICIT_SYS */
af419de7
JH		 3728 /* This is a really primitive check; environment gets ignored only
3729 * if -T are the first chars together; otherwise one gets
3730 * "Too late" message. */
22f7c9c9
JH		 3731 if ( argc > 1 && argv[1][0] == '-'
3732 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3733 return 1;
3734 return 0;
3735}
22f7c9c9 3736
d0bafe7e
NC		 3737/* Passing the flag as a single char rather than a string is a slight space
3738 optimisation. The only message that isn't /^-.$/ is
3739 "program input from stdin", which is substituted in place of '\0', which
3740 could never be a command line flag. */
76e3520e 3741STATIC void
f20b2998 3742S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
bbce6d69 3743{
97aff369 3744 dVAR;
d0bafe7e
NC		 3745 char string[3] = "-x";
3746 const char *message = "program input from stdin";
3747
3748 if (flag) {
3749 string[1] = flag;
3750 message = string;
3751 }
3752
ae3f3efd 3753#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3280af22 3754 if (PL_euid != PL_uid)
d0bafe7e 3755 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3280af22 3756 if (PL_egid != PL_gid)
d0bafe7e 3757 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
ae3f3efd 3758#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
f20b2998 3759 if (suidscript)
d0bafe7e 3760 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
bbce6d69 3761}
3762
1ee4443e
IZ		 3763void
3764Perl_init_debugger(pTHX)
748a9306 3765{
97aff369 3766 dVAR;
c4420975 3767 HV * const ostash = PL_curstash;
1ee4443e 3768
3280af22 3769 PL_curstash = PL_debstash;
5c1737d1
NC		 3770 PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args", GV_ADDMULTI,
3771 SVt_PVAV))));
3280af22 3772 AvREAL_off(PL_dbargs);
5c1737d1
NC		 3773 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3774 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3775 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3776 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3777 sv_setiv(PL_DBsingle, 0);
5c1737d1 3778 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3779 sv_setiv(PL_DBtrace, 0);
5c1737d1 3780 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3781 sv_setiv(PL_DBsignal, 0);
1ee4443e 3782 PL_curstash = ostash;
352d5a3a
LW		 3783}
3784
2ce36478
SM		 3785#ifndef STRESS_REALLOC
3786#define REASONABLE(size) (size)
3787#else
3788#define REASONABLE(size) (1) /* unreasonable */
3789#endif
3790
11343788 3791void
cea2e8a9 3792Perl_init_stacks(pTHX)
79072805 3793{
97aff369 3794 dVAR;
e336de0d 3795 /* start with 128-item stack and 8K cxstack */
3280af22 3796 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3797 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3798 PL_curstackinfo->si_type = PERLSI_MAIN;
3799 PL_curstack = PL_curstackinfo->si_stack;
3800 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3801
3280af22
NIS		 3802 PL_stack_base = AvARRAY(PL_curstack);
3803 PL_stack_sp = PL_stack_base;
3804 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3805
a02a5408 3806 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3280af22
NIS		 3807 PL_tmps_floor = -1;
3808 PL_tmps_ix = -1;
3809 PL_tmps_max = REASONABLE(128);
8990e307 3810
a02a5408 3811 Newx(PL_markstack,REASONABLE(32),I32);
3280af22
NIS		 3812 PL_markstack_ptr = PL_markstack;
3813 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3814
ce2f7c3b 3815 SET_MARK_OFFSET;
e336de0d 3816
a02a5408 3817 Newx(PL_scopestack,REASONABLE(32),I32);
d343c3ef
GG		 3818#ifdef DEBUGGING
3819 Newx(PL_scopestack_name,REASONABLE(32),const char*);
3820#endif
3280af22
NIS		 3821 PL_scopestack_ix = 0;
3822 PL_scopestack_max = REASONABLE(32);
79072805 3823
a02a5408 3824 Newx(PL_savestack,REASONABLE(128),ANY);
3280af22
NIS		 3825 PL_savestack_ix = 0;
3826 PL_savestack_max = REASONABLE(128);
378cc40b 3827}
33b78306 3828
2ce36478
SM		 3829#undef REASONABLE
3830
76e3520e 3831STATIC void
cea2e8a9 3832S_nuke_stacks(pTHX)
6e72f9df 3833{
97aff369 3834 dVAR;
3280af22
NIS		 3835 while (PL_curstackinfo->si_next)
3836 PL_curstackinfo = PL_curstackinfo->si_next;
3837 while (PL_curstackinfo) {
3838 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3839 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3840 Safefree(PL_curstackinfo->si_cxstack);
3841 Safefree(PL_curstackinfo);
3842 PL_curstackinfo = p;
e336de0d 3843 }
3280af22
NIS		 3844 Safefree(PL_tmps_stack);
3845 Safefree(PL_markstack);
3846 Safefree(PL_scopestack);
3847 Safefree(PL_savestack);
378cc40b 3848}
33b78306 3849
8990e307 3850
76e3520e 3851STATIC void
cea2e8a9 3852S_init_predump_symbols(pTHX)
45d8adaa 3853{
97aff369 3854 dVAR;
93a17b20 3855 GV *tmpgv;
af8c498a 3856 IO *io;
79072805 3857
64ace3f8 3858 sv_setpvs(get_sv("\"", GV_ADD), " ");
e23d9e2f
CS		 3859 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
3860
fafc274c 3861 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3280af22 3862 GvMULTI_on(PL_stdingv);
af8c498a 3863 io = GvIOp(PL_stdingv);
a04651f4 3864 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3865 IoIFP(io) = PerlIO_stdin();
fafc274c 3866 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
a5f75d66 3867 GvMULTI_on(tmpgv);
a45c7426 3868 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
79072805 3869
fafc274c 3870 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
a5f75d66 3871 GvMULTI_on(tmpgv);
af8c498a 3872 io = GvIOp(tmpgv);
a04651f4 3873 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3874 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3875 setdefout(tmpgv);
fafc274c 3876 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
a5f75d66 3877 GvMULTI_on(tmpgv);
a45c7426 3878 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
79072805 3879
fafc274c 3880 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
bf49b057
GS		 3881 GvMULTI_on(PL_stderrgv);
3882 io = GvIOp(PL_stderrgv);
a04651f4 3883 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3884 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
fafc274c 3885 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
a5f75d66 3886 GvMULTI_on(tmpgv);
a45c7426 3887 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
79072805 3888
561b68a9 3889 PL_statname = newSV(0); /* last filename we did stat on */
79072805 3890}
33b78306 3891
a11ec5a9 3892void
8f42b153 3893Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
33b78306 3894{
97aff369 3895 dVAR;
7918f24d
NC		 3896
3897 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
3898
79072805 3899 argc--,argv++; /* skip name of script */
3280af22 3900 if (PL_doswitches) {
79072805 3901 for (; argc > 0 && **argv == '-'; argc--,argv++) {
aec46f14 3902 char *s;
79072805
LW		 3903 if (!argv[0][1])
3904 break;
379d538a 3905 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3906 argc--,argv++;
3907 break;
3908 }
155aba94 3909 if ((s = strchr(argv[0], '='))) {
b3d904f3
NC		 3910 const char *const start_name = argv[0] + 1;
3911 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
3912 TRUE, SVt_PV)), s + 1);
79072805
LW		 3913 }
3914 else
71315bf2 3915 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
fe14fcc3 3916 }
79072805 3917 }
fafc274c 3918 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
a11ec5a9
RGS		 3919 GvMULTI_on(PL_argvgv);
3920 (void)gv_AVadd(PL_argvgv);
3921 av_clear(GvAVn(PL_argvgv));
3922 for (; argc > 0; argc--,argv++) {
aec46f14 3923 SV * const sv = newSVpv(argv[0],0);
a11ec5a9 3924 av_push(GvAVn(PL_argvgv),sv);
ce81ff12
JH		 3925 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3926 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3927 SvUTF8_on(sv);
3928 }
a05d7ebb
JH		 3929 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3930 (void)sv_utf8_decode(sv);
a11ec5a9
RGS		 3931 }
3932 }
3933}
3934
3935STATIC void
3936S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3937{
27da23d5 3938 dVAR;
a11ec5a9 3939 GV* tmpgv;
a11ec5a9 3940
7918f24d
NC		 3941 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
3942
b9f83d2f 3943 PL_toptarget = newSV_type(SVt_PVFM);
76f68e9b 3944 sv_setpvs(PL_toptarget, "");
b9f83d2f 3945 PL_bodytarget = newSV_type(SVt_PVFM);
76f68e9b 3946 sv_setpvs(PL_bodytarget, "");
3280af22 3947 PL_formtarget = PL_bodytarget;
79072805 3948
bbce6d69 3949 TAINT;
a11ec5a9
RGS		 3950
3951 init_argv_symbols(argc,argv);
3952
fafc274c 3953 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
3280af22 3954 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3955 }
fafc274c 3956 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
79072805 3957 HV *hv;
e17132c1 3958 bool env_is_not_environ;
3280af22
NIS		 3959 GvMULTI_on(PL_envgv);
3960 hv = GvHVn(PL_envgv);
a0714e2c 3961 hv_magic(hv, NULL, PERL_MAGIC_env);
2f42fcb0 3962#ifndef PERL_MICRO
fa6a1c44 3963#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3964 /* Note that if the supplied env parameter is actually a copy
3965 of the global environ then it may now point to free'd memory
3966 if the environment has been modified since. To avoid this
3967 problem we treat env==NULL as meaning 'use the default'
3968 */
3969 if (!env)
3970 env = environ;
e17132c1
JD		 3971 env_is_not_environ = env != environ;
3972 if (env_is_not_environ
4efc5df6
GS		 3973# ifdef USE_ITHREADS
3974 && PL_curinterp == aTHX
3975# endif
3976 )
3977 {
bd61b366 3978 environ[0] = NULL;
4efc5df6 3979 }
9b4eeda5 3980 if (env) {
9d27dca9 3981 char *s, *old_var;
27da23d5 3982 SV *sv;
764df951 3983 for (; *env; env++) {
9d27dca9
MT		 3984 old_var = *env;
3985
3986 if (!(s = strchr(old_var,'=')) || s == old_var)
79072805 3987 continue;
9d27dca9 3988
7da0e383 3989#if defined(MSDOS) && !defined(DJGPP)
61968511 3990 *s = '\0';
9d27dca9 3991 (void)strupr(old_var);
61968511 3992 *s = '=';
137443ea 3993#endif
61968511 3994 sv = newSVpv(s+1, 0);
9d27dca9 3995 (void)hv_store(hv, old_var, s - old_var, sv, 0);
e17132c1 3996 if (env_is_not_environ)
61968511 3997 mg_set(sv);
764df951 3998 }
9b4eeda5 3999 }
103a7189 4000#endif /* USE_ENVIRON_ARRAY */
2f42fcb0 4001#endif /* !PERL_MICRO */
79072805 4002 }
bbce6d69 4003 TAINT_NOT;
fafc274c 4004 if ((tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV))) {
306196c3 4005 SvREADONLY_off(GvSV(tmpgv));
7766f137 4006 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
306196c3
MS		 4007 SvREADONLY_on(GvSV(tmpgv));
4008 }
4d76a344
RGS		 4009#ifdef THREADS_HAVE_PIDS
4010 PL_ppid = (IV)getppid();
4011#endif
2710853f
MJD		 4012
4013 /* touch @F array to prevent spurious warnings 20020415 MJD */
4014 if (PL_minus_a) {
cbfd0a87 4015 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
2710853f 4016 }
33b78306 4017}
34de22dd 4018
76e3520e 4019STATIC void
2cace6ac 4020S_init_perllib(pTHX)
34de22dd 4021{
97aff369 4022 dVAR;
32910c7a 4023#ifndef VMS
929e5b34 4024 const char *perl5lib = NULL;
32910c7a 4025#endif
35ba5ce9 4026 const char *s;
e6a0bbf8
NC		 4027#ifdef WIN32
4028 STRLEN len;
4029#endif
4030
3280af22 4031 if (!PL_tainting) {
552a7a9b 4032#ifndef VMS
32910c7a 4033 perl5lib = PerlEnv_getenv("PERL5LIB");
88f5bc07
AB		 4034/*
4035 * It isn't possible to delete an environment variable with
42a3dd3a
RGS		 4036 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4037 * case we treat PERL5LIB as undefined if it has a zero-length value.
88f5bc07
AB		 4038 */
4039#if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
32910c7a 4040 if (perl5lib && *perl5lib != '\0')
88f5bc07 4041#else
32910c7a 4042 if (perl5lib)
88f5bc07 4043#endif
32910c7a 4044 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
2cace6ac 4045 else {
4705144d
NC		 4046 s = PerlEnv_getenv("PERLLIB");
4047 if (s)
50d61629 4048 incpush_use_sep(s, 0, 0);
4705144d 4049 }
552a7a9b 4050#else /* VMS */
4051 /* Treat PERL5?LIB as a possible search list logical name -- the
4052 * "natural" VMS idiom for a Unix path string. We allow each
4053 * element to be a set of |-separated directories for compatibility.
4054 */
4055 char buf[256];
4056 int idx = 0;
4057 if (my_trnlnm("PERL5LIB",buf,0))
e28f3139 4058 do {
2cace6ac 4059 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
e28f3139 4060 } while (my_trnlnm("PERL5LIB",buf,++idx));
f05b5874 4061 else {
e28f3139 4062 while (my_trnlnm("PERLLIB",buf,idx++))
50d61629 4063 incpush_use_sep(buf, 0, 0);
f05b5874 4064 }
552a7a9b 4065#endif /* VMS */
85e6fe83 4066 }
34de22dd 4067
b0e687f7
NC		 4068#ifndef PERL_IS_MINIPERL
4069 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4070 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4071
c90c0ff4 4072/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 4073 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 4074*/
4633a7c4 4075#ifdef APPLLIB_EXP
be71fc8f
NC		 4076 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4077 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
16d20bd9 4078#endif
4633a7c4 4079
65f19062 4080#ifdef SITEARCH_EXP
3b290362
GS		 4081 /* sitearch is always relative to sitelib on Windows for
4082 * DLL-based path intuition to work correctly */
4083# if !defined(WIN32)
be71fc8f
NC		 4084 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4085 INCPUSH_CAN_RELOCATE);
65f19062
GS		 4086# endif
4087#endif
4088
4633a7c4 4089#ifdef SITELIB_EXP
65f19062 4090# if defined(WIN32)
574c798a 4091 /* this picks up sitearch as well */
e6a0bbf8 4092 s = win32_get_sitelib(PERL_FS_VERSION, &len);
1fa74d9f 4093 if (s)
e6a0bbf8 4094 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
65f19062 4095# else
50d61629 4096 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
65f19062
GS		 4097# endif
4098#endif
189d1e8d 4099
65f19062 4100#ifdef PERL_VENDORARCH_EXP
4ea817c6 4101 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 4102 * DLL-based path intuition to work correctly */
4103# if !defined(WIN32)
be71fc8f
NC		 4104 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4105 INCPUSH_CAN_RELOCATE);
65f19062 4106# endif
4b03c463 4107#endif
65f19062
GS		 4108
4109#ifdef PERL_VENDORLIB_EXP
4110# if defined(WIN32)
e28f3139 4111 /* this picks up vendorarch as well */
e6a0bbf8 4112 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
1fa74d9f 4113 if (s)
e6a0bbf8 4114 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
65f19062 4115# else
be71fc8f
NC		 4116 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4117 INCPUSH_CAN_RELOCATE);
65f19062 4118# endif
a3635516 4119#endif
65f19062 4120
b9ba2fad 4121#ifdef ARCHLIB_EXP
2cace6ac 4122 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
b9ba2fad
NC		 4123#endif
4124
4125#ifndef PRIVLIB_EXP
4126# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4127#endif
4128
4129#if defined(WIN32)
2cace6ac
NC		 4130 s = win32_get_privlib(PERL_FS_VERSION, &len);
4131 if (s)
4132 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
b9ba2fad 4133#else
04c9eecc 4134# ifdef NETWARE
2cace6ac 4135 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
04c9eecc 4136# else
2cace6ac 4137 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
04c9eecc 4138# endif
b9ba2fad
NC		 4139#endif
4140
3b777bb4 4141#ifdef PERL_OTHERLIBDIRS
1e3208d8
NC		 4142 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4143 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
2cace6ac
NC		 4144 |INCPUSH_CAN_RELOCATE);
4145#endif
2cace6ac
NC		 4146
4147 if (!PL_tainting) {
4148#ifndef VMS
2cace6ac
NC		 4149/*
4150 * It isn't possible to delete an environment variable with
4151 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4152 * case we treat PERL5LIB as undefined if it has a zero-length value.
4153 */
4154#if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
32910c7a 4155 if (perl5lib && *perl5lib != '\0')
2cace6ac 4156#else
32910c7a 4157 if (perl5lib)
2cace6ac 4158#endif
32910c7a
NC		 4159 incpush_use_sep(perl5lib, 0,
4160 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
2cace6ac
NC		 4161#else /* VMS */
4162 /* Treat PERL5?LIB as a possible search list logical name -- the
4163 * "natural" VMS idiom for a Unix path string. We allow each
4164 * element to be a set of |-separated directories for compatibility.
4165 */
4166 char buf[256];
4167 int idx = 0;
4168 if (my_trnlnm("PERL5LIB",buf,0))
4169 do {
be71fc8f
NC		 4170 incpush_use_sep(buf, 0,
4171 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
2cace6ac
NC		 4172 } while (my_trnlnm("PERL5LIB",buf,++idx));
4173#endif /* VMS */
a26c0e28 4174 }
2cace6ac
NC		 4175
4176/* Use the ~-expanded versions of APPLLIB (undocumented),
4177 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
4178*/
4179#ifdef APPLLIB_EXP
be71fc8f
NC		 4180 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4181 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
2cace6ac
NC		 4182#endif
4183
2cace6ac
NC		 4184#if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4185 /* Search for version-specific dirs below here */
be71fc8f
NC		 4186 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4187 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
2cace6ac
NC		 4188#endif
4189
4190
4191#if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4192 /* Search for version-specific dirs below here */
be71fc8f
NC		 4193 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4194 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
2cace6ac
NC		 4195#endif
4196
4197#ifdef PERL_OTHERLIBDIRS
1e3208d8
NC		 4198 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4199 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4200 |INCPUSH_CAN_RELOCATE);
3b777bb4 4201#endif
b0e687f7 4202#endif /* !PERL_IS_MINIPERL */
3b777bb4 4203
2cace6ac 4204 if (!PL_tainting)
55b4bc1c 4205 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
774d564b 4206}
4207
a0fd4948 4208#if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
774d564b 4209# define PERLLIB_SEP ';'
4210#else
4211# if defined(VMS)
4212# define PERLLIB_SEP '|'
4213# else
e37778c2 4214# define PERLLIB_SEP ':'
774d564b 4215# endif
4216#endif
4217#ifndef PERLLIB_MANGLE
4218# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 4219#endif
774d564b 4220
ad17a1ae
NC		 4221/* Push a directory onto @INC if it exists.
4222 Generate a new SV if we do this, to save needing to copy the SV we push
4223 onto @INC */
4224STATIC SV *
7ffdaae6 4225S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
ad17a1ae 4226{
97aff369 4227 dVAR;
ad17a1ae 4228 Stat_t tmpstatbuf;
7918f24d
NC		 4229
4230 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4231
848ef955 4232 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
ad17a1ae 4233 S_ISDIR(tmpstatbuf.st_mode)) {
3a9a9ba7 4234 av_push(av, dir);
7ffdaae6
NC		 4235 dir = newSVsv(stem);
4236 } else {
4237 /* Truncate dir back to stem. */
4238 SvCUR_set(dir, SvCUR(stem));
ad17a1ae
NC		 4239 }
4240 return dir;
4241}
4242
76e3520e 4243STATIC void
55b4bc1c 4244S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
774d564b 4245{
97aff369 4246 dVAR;
7fc73107 4247 const U8 using_sub_dirs
1e3208d8
NC		 4248 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4249 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4250 const U8 add_versioned_sub_dirs
4251 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4252 const U8 add_archonly_sub_dirs
4253 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
6df20272 4254#ifdef PERL_INC_VERSION_LIST
6434436b 4255 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
6df20272 4256#endif
6434436b
NC		 4257 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4258 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
a26c0e28 4259 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
08d0d8ab 4260 AV *const inc = GvAVn(PL_incgv);
774d564b 4261
08d0d8ab
NC		 4262 PERL_ARGS_ASSERT_INCPUSH;
4263 assert(len > 0);
3a9a9ba7 4264
08d0d8ab
NC		 4265 /* Could remove this vestigial extra block, if we don't mind a lot of
4266 re-indenting diff noise. */
55b4bc1c
NC		 4267 {
4268 SV *libdir;
3a9a9ba7
NC		 4269 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4270 arranged to unshift #! line -I onto the front of @INC. However,
4271 -I can add version and architecture specific libraries, and they
4272 need to go first. The old code assumed that it was always
4273 pushing. Hence to make it work, need to push the architecture
4274 (etc) libraries onto a temporary array, then "unshift" that onto
4275 the front of @INC. */
7fc73107 4276 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
774d564b 4277
55b4bc1c
NC		 4278 if (len) {
4279 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4280 defined to so something (in os2/os2.c), but the code has been
4281 this way, ignoring any possible changed of length, since
4282 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4283 it be. */
4284 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4285 } else {
4286 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
774d564b 4287 }
4288
dd374669
AL		 4289 /* Do the if() outside the #ifdef to avoid warnings about an unused
4290 parameter. */
4291 if (canrelocate) {
88fe16b2
NC		 4292#ifdef PERL_RELOCATABLE_INC
4293 /*
4294 * Relocatable include entries are marked with a leading .../
4295 *
4296 * The algorithm is
4297 * 0: Remove that leading ".../"
4298 * 1: Remove trailing executable name (anything after the last '/')
4299 * from the perl path to give a perl prefix
4300 * Then
4301 * While the @INC element starts "../" and the prefix ends with a real
4302 * directory (ie not . or ..) chop that real directory off the prefix
4303 * and the leading "../" from the @INC element. ie a logical "../"
4304 * cleanup
4305 * Finally concatenate the prefix and the remainder of the @INC element
4306 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4307 * generates /usr/local/lib/perl5
4308 */
890ce7af 4309 const char *libpath = SvPVX(libdir);
88fe16b2
NC		 4310 STRLEN libpath_len = SvCUR(libdir);
4311 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4312 /* Game on! */
890ce7af 4313 SV * const caret_X = get_sv("\030", 0);
88fe16b2
NC		 4314 /* Going to use the SV just as a scratch buffer holding a C
4315 string: */
4316 SV *prefix_sv;
4317 char *prefix;
4318 char *lastslash;
4319
4320 /* $^X is *the* source of taint if tainting is on, hence
4321 SvPOK() won't be true. */
4322 assert(caret_X);
4323 assert(SvPOKp(caret_X));
a663657d
NC		 4324 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4325 SvUTF8(caret_X));
88fe16b2
NC		 4326 /* Firstly take off the leading .../
4327 If all else fail we'll do the paths relative to the current
4328 directory. */
4329 sv_chop(libdir, libpath + 4);
4330 /* Don't use SvPV as we're intentionally bypassing taining,
4331 mortal copies that the mg_get of tainting creates, and
4332 corruption that seems to come via the save stack.
4333 I guess that the save stack isn't correctly set up yet. */
4334 libpath = SvPVX(libdir);
4335 libpath_len = SvCUR(libdir);
4336
4337 /* This would work more efficiently with memrchr, but as it's
4338 only a GNU extension we'd need to probe for it and
4339 implement our own. Not hard, but maybe not worth it? */
4340
4341 prefix = SvPVX(prefix_sv);
4342 lastslash = strrchr(prefix, '/');
4343
4344 /* First time in with the *lastslash = '\0' we just wipe off
4345 the trailing /perl from (say) /usr/foo/bin/perl
4346 */
4347 if (lastslash) {
4348 SV *tempsv;
4349 while ((*lastslash = '\0'), /* Do that, come what may. */
4350 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4351 && (lastslash = strrchr(prefix, '/')))) {
4352 if (lastslash[1] == '\0'
4353 || (lastslash[1] == '.'
4354 && (lastslash[2] == '/' /* ends "/." */
4355 || (lastslash[2] == '/'
4356 && lastslash[3] == '/' /* or "/.." */
4357 )))) {
4358 /* Prefix ends "/" or "/." or "/..", any of which
4359 are fishy, so don't do any more logical cleanup.
4360 */
4361 break;
4362 }
4363 /* Remove leading "../" from path */
4364 libpath += 3;
4365 libpath_len -= 3;
4366 /* Next iteration round the loop removes the last
4367 directory name from prefix by writing a '\0' in
4368 the while clause. */
4369 }
4370 /* prefix has been terminated with a '\0' to the correct
4371 length. libpath points somewhere into the libdir SV.
4372 We need to join the 2 with '/' and drop the result into
4373 libdir. */
4374 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4375 SvREFCNT_dec(libdir);
4376 /* And this is the new libdir. */
4377 libdir = tempsv;
4378 if (PL_tainting &&
4379 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4380 /* Need to taint reloccated paths if running set ID */
4381 SvTAINTED_on(libdir);
4382 }
4383 }
4384 SvREFCNT_dec(prefix_sv);
4385 }
88fe16b2 4386#endif
dd374669 4387 }
774d564b 4388 /*
4389 * BEFORE pushing libdir onto @INC we may first push version- and
4390 * archname-specific sub-directories.
4391 */
ee80e7be 4392 if (using_sub_dirs) {
7ffdaae6 4393 SV *subdir;
29d82f8d 4394#ifdef PERL_INC_VERSION_LIST
8353b874 4395 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
c4420975
AL		 4396 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4397 const char * const *incver;
29d82f8d 4398#endif
aa689395 4399#ifdef VMS
4400 char *unix;
4401 STRLEN len;
774d564b 4402
10cc20f6 4403
bd61b366 4404 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
aa689395 4405 len = strlen(unix);
4406 while (unix[len-1] == '/') len--; /* Cosmetic */
4407 sv_usepvn(libdir,unix,len);
4408 }
4409 else
bf49b057 4410 PerlIO_printf(Perl_error_log,
aa689395 4411 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 4412 SvPV(libdir,len));
aa689395 4413#endif
7ffdaae6
NC		 4414
4415 subdir = newSVsv(libdir);
4416
1e3208d8 4417 if (add_versioned_sub_dirs) {
9c8a64f0 4418 /* .../version/archname if -d .../version/archname */
e51b748d 4419 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
7ffdaae6 4420 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4b03c463 4421
9c8a64f0 4422 /* .../version if -d .../version */
e51b748d 4423 sv_catpvs(subdir, "/" PERL_FS_VERSION);
7ffdaae6 4424 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
29d82f8d 4425 }
9c8a64f0 4426
9c8a64f0 4427#ifdef PERL_INC_VERSION_LIST
ccc2aad8 4428 if (addoldvers) {
9c8a64f0
GS		 4429 for (incver = incverlist; *incver; incver++) {
4430 /* .../xxx if -d .../xxx */
e51b748d 4431 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
7ffdaae6 4432 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
9c8a64f0
GS		 4433 }
4434 }
29d82f8d 4435#endif
c992324b 4436
1e3208d8 4437 if (add_archonly_sub_dirs) {
c992324b 4438 /* .../archname if -d .../archname */
e51b748d 4439 sv_catpvs(subdir, "/" ARCHNAME);
7ffdaae6 4440 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
c992324b
NC		 4441
4442 }
10cc20f6
NC		 4443
4444 assert (SvREFCNT(subdir) == 1);
4445 SvREFCNT_dec(subdir);
774d564b 4446 }
4447
20189146
RGS		 4448 /* finally add this lib directory at the end of @INC */
4449 if (unshift) {
3a9a9ba7 4450 U32 extra = av_len(av) + 1;
a26c0e28
NC		 4451 av_unshift(inc, extra + push_basedir);
4452 if (push_basedir)
4453 av_store(inc, extra, libdir);
3a9a9ba7
NC		 4454 while (extra--) {
4455 /* av owns a reference, av_store() expects to be donated a
4456 reference, and av expects to be sane when it's cleared.
4457 If I wanted to be naughty and wrong, I could peek inside the
4458 implementation of av_clear(), realise that it uses
4459 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4460 and so directly steal from it (with a memcpy() to inc, and
4461 then memset() to NULL them out. But people copy code from the
4462 core expecting it to be best practise, so let's use the API.
4463 Although studious readers will note that I'm not checking any
4464 return codes. */
4465 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4466 }
4467 SvREFCNT_dec(av);
20189146 4468 }
a26c0e28 4469 else if (push_basedir) {
3a9a9ba7 4470 av_push(inc, libdir);
20189146 4471 }
a26c0e28
NC		 4472
4473 if (!push_basedir) {
4474 assert (SvREFCNT(libdir) == 1);
4475 SvREFCNT_dec(libdir);
4476 }
774d564b 4477 }
34de22dd 4478}
93a17b20 4479
55b4bc1c 4480STATIC void
50d61629 4481S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
55b4bc1c 4482{
50d61629
NC		 4483 const char *s;
4484 const char *end;
55b4bc1c
NC		 4485 /* This logic has been broken out from S_incpush(). It may be possible to
4486 simplify it. */
4487
4705144d
NC		 4488 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4489
50d61629
NC		 4490 if (!len)
4491 len = strlen(p);
4492
4493 end = p + len;
4494
55b4bc1c 4495 /* Break at all separators */
e42f52dd 4496 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
50d61629
NC		 4497 if (s == p) {
4498 /* skip any consecutive separators */
55b4bc1c 4499
55b4bc1c 4500 /* Uncomment the next line for PATH semantics */
50d61629 4501 /* But you'll need to write tests */
55b4bc1c 4502 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
50d61629 4503 } else {
55b4bc1c 4504 incpush(p, (STRLEN)(s - p), flags);
55b4bc1c 4505 }
50d61629 4506 p = s + 1;
55b4bc1c 4507 }
50d61629
NC		 4508 if (p != end)
4509 incpush(p, (STRLEN)(end - p), flags);
4510
55b4bc1c 4511}
199100c8 4512
93a17b20 4513void
864dbfa3 4514Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 4515{
27da23d5 4516 dVAR;
971a9dd3 4517 SV *atsv;
5f40764f 4518 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
312caa8e 4519 CV *cv;
22921e25 4520 STRLEN len;
6224f72b 4521 int ret;
db36c5a1 4522 dJMPENV;
93a17b20 4523
7918f24d
NC		 4524 PERL_ARGS_ASSERT_CALL_LIST;
4525
e1ec3a88 4526 while (av_len(paramList) >= 0) {
ea726b52 4527 cv = MUTABLE_CV(av_shift(paramList));
ece599bd
RGS		 4528 if (PL_savebegin) {
4529 if (paramList == PL_beginav) {
059a8bb7 4530 /* save PL_beginav for compiler */
ad64d0ec 4531 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
ece599bd
RGS		 4532 }
4533 else if (paramList == PL_checkav) {
4534 /* save PL_checkav for compiler */
ad64d0ec 4535 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
ece599bd 4536 }
3c10abe3
AG		 4537 else if (paramList == PL_unitcheckav) {
4538 /* save PL_unitcheckav for compiler */
ad64d0ec 4539 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
3c10abe3 4540 }
059a8bb7 4541 } else {
81d86705
NC		 4542 if (!PL_madskills)
4543 SAVEFREESV(cv);
059a8bb7 4544 }
14dd3ad8 4545 JMPENV_PUSH(ret);
6224f72b 4546 switch (ret) {
312caa8e 4547 case 0:
81d86705
NC		 4548#ifdef PERL_MAD
4549 if (PL_madskills)
4550 PL_madskills |= 16384;
4551#endif
d6f07c05 4552 CALL_LIST_BODY(cv);
81d86705
NC		 4553#ifdef PERL_MAD
4554 if (PL_madskills)
4555 PL_madskills &= ~16384;
4556#endif
971a9dd3 4557 atsv = ERRSV;
10516c54 4558 (void)SvPV_const(atsv, len);
312caa8e
CS		 4559 if (len) {
4560 PL_curcop = &PL_compiling;
57843af0 4561 CopLINE_set(PL_curcop, oldline);
312caa8e 4562 if (paramList == PL_beginav)
396482e1 4563 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
312caa8e 4564 else
4f25aa18
GS		 4565 Perl_sv_catpvf(aTHX_ atsv,
4566 "%s failed--call queue aborted",
7d30b5c4 4567 paramList == PL_checkav ? "CHECK"
4f25aa18 4568 : paramList == PL_initav ? "INIT"
3c10abe3 4569 : paramList == PL_unitcheckav ? "UNITCHECK"
4f25aa18 4570 : "END");
312caa8e
CS		 4571 while (PL_scopestack_ix > oldscope)
4572 LEAVE;
14dd3ad8 4573 JMPENV_POP;
be2597df 4574 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
a0d0e21e 4575 }
85e6fe83 4576 break;
6224f72b 4577 case 1:
f86702cc 4578 STATUS_ALL_FAILURE;
85e6fe83 4579 /* FALL THROUGH */
6224f72b 4580 case 2:
85e6fe83 4581 /* my_exit() was called */
3280af22 4582 while (PL_scopestack_ix > oldscope)
2ae324a7 4583 LEAVE;
84902520 4584 FREETMPS;
3280af22 4585 PL_curstash = PL_defstash;
3280af22 4586 PL_curcop = &PL_compiling;
57843af0 4587 CopLINE_set(PL_curcop, oldline);
14dd3ad8 4588 JMPENV_POP;
f86702cc 4589 my_exit_jump();
85e6fe83 4590 /* NOTREACHED */
6224f72b 4591 case 3:
312caa8e
CS		 4592 if (PL_restartop) {
4593 PL_curcop = &PL_compiling;
57843af0 4594 CopLINE_set(PL_curcop, oldline);
312caa8e 4595 JMPENV_JUMP(3);
85e6fe83 4596 }
bf49b057 4597 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 4598 FREETMPS;
4599 break;
8990e307 4600 }
14dd3ad8 4601 JMPENV_POP;
93a17b20 4602 }
93a17b20 4603}
93a17b20 4604
f86702cc 4605void
864dbfa3 4606Perl_my_exit(pTHX_ U32 status)
f86702cc 4607{
97aff369 4608 dVAR;
f86702cc 4609 switch (status) {
4610 case 0:
4611 STATUS_ALL_SUCCESS;
4612 break;
4613 case 1:
4614 STATUS_ALL_FAILURE;
4615 break;
4616 default:
6ac6a52b 4617 STATUS_EXIT_SET(status);
f86702cc 4618 break;
4619 }
4620 my_exit_jump();
4621}
4622
4623void
864dbfa3 4624Perl_my_failure_exit(pTHX)
f86702cc 4625{
97aff369 4626 dVAR;
f86702cc 4627#ifdef VMS
fb38d079
JM		 4628 /* We have been called to fall on our sword. The desired exit code
4629 * should be already set in STATUS_UNIX, but could be shifted over
0968cdad
JM		 4630 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4631 * that code is set.
fb38d079
JM		 4632 *
4633 * If an error code has not been set, then force the issue.
4634 */
0968cdad
JM		 4635 if (MY_POSIX_EXIT) {
4636
e08e1e1d
JM		 4637 /* According to the die_exit.t tests, if errno is non-zero */
4638 /* It should be used for the error status. */
0968cdad 4639
e08e1e1d
JM		 4640 if (errno == EVMSERR) {
4641 STATUS_NATIVE = vaxc$errno;
4642 } else {
0968cdad 4643
e08e1e1d
JM		 4644 /* According to die_exit.t tests, if the child_exit code is */
4645 /* also zero, then we need to exit with a code of 255 */
4646 if ((errno != 0) && (errno < 256))
4647 STATUS_UNIX_EXIT_SET(errno);
4648 else if (STATUS_UNIX < 255) {
0968cdad 4649 STATUS_UNIX_EXIT_SET(255);
e08e1e1d
JM		 4650 }
4651
0968cdad 4652 }
e08e1e1d
JM		 4653
4654 /* The exit code could have been set by $? or vmsish which
4655 * means that it may not have fatal set. So convert
4656 * success/warning codes to fatal with out changing
4657 * the POSIX status code. The severity makes VMS native
4658 * status handling work, while UNIX mode programs use the
4659 * the POSIX exit codes.
4660 */
4661 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4662 STATUS_NATIVE &= STS$M_COND_ID;
4663 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4664 }
0968cdad
JM		 4665 }
4666 else {
4667 /* Traditionally Perl on VMS always expects a Fatal Error. */
4668 if (vaxc$errno & 1) {
4669
4670 /* So force success status to failure */
4671 if (STATUS_NATIVE & 1)
4672 STATUS_ALL_FAILURE;
4673 }
4674 else {
4675 if (!vaxc$errno) {
4676 STATUS_UNIX = EINTR; /* In case something cares */
4677 STATUS_ALL_FAILURE;
4678 }
4679 else {
4680 int severity;
4681 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4682
4683 /* Encode the severity code */
4684 severity = STATUS_NATIVE & STS$M_SEVERITY;
4685 STATUS_UNIX = (severity ? severity : 1) << 8;
4686
4687 /* Perl expects this to be a fatal error */
4688 if (severity != STS$K_SEVERE)
4689 STATUS_ALL_FAILURE;
4690 }
4691 }
4692 }
fb38d079 4693
f86702cc 4694#else
9b599b2a 4695 int exitstatus;
f86702cc 4696 if (errno & 255)
e5218da5 4697 STATUS_UNIX_SET(errno);
9b599b2a 4698 else {
e5218da5 4699 exitstatus = STATUS_UNIX >> 8;
9b599b2a 4700 if (exitstatus & 255)
e5218da5 4701 STATUS_UNIX_SET(exitstatus);
9b599b2a 4702 else
e5218da5 4703 STATUS_UNIX_SET(255);
9b599b2a 4704 }
f86702cc 4705#endif
4706 my_exit_jump();
93a17b20
LW		 4707}
4708
76e3520e 4709STATIC void
cea2e8a9 4710S_my_exit_jump(pTHX)
f86702cc 4711{
27da23d5 4712 dVAR;
f86702cc 4713
3280af22
NIS		 4714 if (PL_e_script) {
4715 SvREFCNT_dec(PL_e_script);
a0714e2c 4716 PL_e_script = NULL;
f86702cc 4717 }
4718
3280af22 4719 POPSTACK_TO(PL_mainstack);
f97a0ef2
RH		 4720 dounwind(-1);
4721 LEAVE_SCOPE(0);
ff0cee69 4722
6224f72b 4723 JMPENV_JUMP(2);
f86702cc 4724}
873ef191 4725
0cb96387 4726static I32
acfe0abc 4727read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
873ef191 4728{
97aff369 4729 dVAR;
9d4ba2ae
AL		 4730 const char * const p = SvPVX_const(PL_e_script);
4731 const char *nl = strchr(p, '\n');
4732
4733 PERL_UNUSED_ARG(idx);
4734 PERL_UNUSED_ARG(maxlen);
dd374669 4735
3280af22 4736 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 4737 if (nl-p == 0) {
0cb96387 4738 filter_del(read_e_script);
873ef191 4739 return 0;
7dfe3f66 4740 }
873ef191 4741 sv_catpvn(buf_sv, p, nl-p);
3280af22 4742 sv_chop(PL_e_script, nl);
873ef191
GS		 4743 return 1;
4744}
66610fdd
RGS		 4745
4746/*
4747 * Local variables:
4748 * c-indentation-style: bsd
4749 * c-basic-offset: 4
4750 * indent-tabs-mode: t
4751 * End:
4752 *
37442d52
RGS		 4753 * ex: set ts=8 sts=4 sw=4 noet:
4754 */
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