This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Skip new chdir warning test if fchdir is not available
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW
1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3246d7a3 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
a687059c 5 *
352d5a3a
LW
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
a687059c 8 *
8d063cd8
LW
9 */
10
a0d0e21e
LW
11/*
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
13 */
45d8adaa 14
166f8a29
DM
15/* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
19 */
20
ae3f3efd
PS
21/* PSz 12 Nov 03
22 *
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
26 *
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
32 *
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
38 *
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
42 *
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
45 *
46 * References:
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
55 * CVE candidate:
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
011f1a1a
JH
85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW
91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
NC
95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
bf357333
NC
99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
2aa47728
NC
108#endif
109
5311654c
JH
110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
a687059c
LW
128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
a687059c
LW
134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
e6827a76 140static void
daa7d858 141S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 142{
27da23d5 143 dVAR;
e6827a76
NC
144 if (!PL_curinterp) {
145 PERL_SET_INTERP(my_perl);
3db8f154 146#if defined(USE_ITHREADS)
e6827a76
NC
147 INIT_THREADS;
148 ALLOC_THREAD_KEY;
149 PERL_SET_THX(my_perl);
150 OP_REFCNT_INIT;
151 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 152# endif
016af4f1
DM
153#ifdef PERL_IMPLICIT_CONTEXT
154 MUTEX_INIT(&PL_my_ctx_mutex);
155# endif
e6827a76
NC
156 }
157 else {
158 PERL_SET_THX(my_perl);
159 }
160}
06d86050 161
32e30700
GS
162#ifdef PERL_IMPLICIT_SYS
163PerlInterpreter *
7766f137
GS
164perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
165 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
166 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
167 struct IPerlDir* ipD, struct IPerlSock* ipS,
168 struct IPerlProc* ipP)
169{
170 PerlInterpreter *my_perl;
9f653bb5 171 /* Newx() needs interpreter, so call malloc() instead */
32e30700 172 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 173 S_init_tls_and_interp(my_perl);
32e30700
GS
174 Zero(my_perl, 1, PerlInterpreter);
175 PL_Mem = ipM;
7766f137
GS
176 PL_MemShared = ipMS;
177 PL_MemParse = ipMP;
32e30700
GS
178 PL_Env = ipE;
179 PL_StdIO = ipStd;
180 PL_LIO = ipLIO;
181 PL_Dir = ipD;
182 PL_Sock = ipS;
183 PL_Proc = ipP;
7cb608b5 184 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 185
32e30700
GS
186 return my_perl;
187}
188#else
954c1994
GS
189
190/*
ccfc67b7
JH
191=head1 Embedding Functions
192
954c1994
GS
193=for apidoc perl_alloc
194
195Allocates a new Perl interpreter. See L<perlembed>.
196
197=cut
198*/
199
93a17b20 200PerlInterpreter *
cea2e8a9 201perl_alloc(void)
79072805 202{
cea2e8a9 203 PerlInterpreter *my_perl;
79072805 204
9f653bb5 205 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 206 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 207
e6827a76 208 S_init_tls_and_interp(my_perl);
7cb608b5 209#ifndef PERL_TRACK_MEMPOOL
07409e01 210 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
211#else
212 Zero(my_perl, 1, PerlInterpreter);
213 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
214 return my_perl;
215#endif
79072805 216}
32e30700 217#endif /* PERL_IMPLICIT_SYS */
79072805 218
954c1994
GS
219/*
220=for apidoc perl_construct
221
222Initializes a new Perl interpreter. See L<perlembed>.
223
224=cut
225*/
226
79072805 227void
0cb96387 228perl_construct(pTHXx)
79072805 229{
27da23d5 230 dVAR;
9d4ba2ae 231 PERL_UNUSED_ARG(my_perl);
8990e307 232#ifdef MULTIPLICITY
54aff467 233 init_interp();
ac27b0f5 234 PL_perl_destruct_level = 1;
54aff467
GS
235#else
236 if (PL_perl_destruct_level > 0)
237 init_interp();
238#endif
33f46ff6 239 /* Init the real globals (and main thread)? */
3280af22 240 if (!PL_linestr) {
2aea9f8a
GS
241 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
242
561b68a9 243 PL_linestr = newSV(79);
3280af22 244 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 245
3280af22 246 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP
247 /* set read-only and try to insure than we wont see REFCNT==0
248 very often */
249
3280af22
NIS
250 SvREADONLY_on(&PL_sv_undef);
251 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 252
3280af22 253 sv_setpv(&PL_sv_no,PL_No);
0309f36e
NC
254 /* value lookup in void context - happens to have the side effect
255 of caching the numeric forms. */
256 SvIV(&PL_sv_no);
3280af22
NIS
257 SvNV(&PL_sv_no);
258 SvREADONLY_on(&PL_sv_no);
259 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 260
3280af22 261 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 262 SvIV(&PL_sv_yes);
3280af22
NIS
263 SvNV(&PL_sv_yes);
264 SvREADONLY_on(&PL_sv_yes);
265 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7996736c
MHM
266
267 SvREADONLY_on(&PL_sv_placeholder);
268 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 269 }
79072805 270
8aad04aa 271 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 272#ifdef PERL_USES_PL_PIDSTATUS
3280af22 273 PL_pidstatus = newHV();
ca0c25f6 274#endif
79072805
LW
275 }
276
396482e1 277 PL_rs = newSVpvs("\n");
dc92893f 278
cea2e8a9 279 init_stacks();
79072805 280
748a9306 281 init_ids();
3280af22 282 PL_lex_state = LEX_NOTPARSING;
a5f75d66 283
312caa8e 284 JMPENV_BOOTSTRAP;
f86702cc
PP
285 STATUS_ALL_SUCCESS;
286
0672f40e 287 init_i18nl10n(1);
36477c24 288 SET_NUMERIC_STANDARD();
0b5b802d 289
ab821d7f 290#if defined(LOCAL_PATCH_COUNT)
3280af22 291 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
292#endif
293
52853b95
GS
294#ifdef HAVE_INTERP_INTERN
295 sys_intern_init();
296#endif
297
3a1ee7e8 298 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 299
3280af22
NIS
300 PL_fdpid = newAV(); /* for remembering popen pids by fd */
301 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 302 PL_errors = newSVpvs("");
48c6b404 303 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
304 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
305 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 306#ifdef USE_ITHREADS
13137afc
AB
307 PL_regex_padav = newAV();
308 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
309 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 310#endif
e5dd39fc 311#ifdef USE_REENTRANT_API
59bd0823 312 Perl_reentrant_init(aTHX);
e5dd39fc 313#endif
3d47000e
AB
314
315 /* Note that strtab is a rather special HV. Assumptions are made
316 about not iterating on it, and not adding tie magic to it.
317 It is properly deallocated in perl_destruct() */
318 PL_strtab = newHV();
319
3d47000e
AB
320 HvSHAREKEYS_off(PL_strtab); /* mandatory */
321 hv_ksplit(PL_strtab, 512);
322
0631ea03
AB
323#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
324 _dyld_lookup_and_bind
325 ("__environ", (unsigned long *) &environ_pointer, NULL);
326#endif /* environ */
327
2f42fcb0
JH
328#ifndef PERL_MICRO
329# ifdef USE_ENVIRON_ARRAY
0631ea03 330 PL_origenviron = environ;
2f42fcb0 331# endif
0631ea03
AB
332#endif
333
5311654c 334 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 335 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
336 * BeOS has those, but returns the wrong value.
337 * The HZ if not originally defined has been by now
338 * been defined as CLK_TCK, if available. */
dbc1d986 339#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
340 PL_clocktick = sysconf(_SC_CLK_TCK);
341 if (PL_clocktick <= 0)
342#endif
343 PL_clocktick = HZ;
344
081fc587
AB
345 PL_stashcache = newHV();
346
e6830b13
NC
347 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
348 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 349
27da23d5
JH
350#ifdef HAS_MMAP
351 if (!PL_mmap_page_size) {
352#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
353 {
354 SETERRNO(0, SS_NORMAL);
355# ifdef _SC_PAGESIZE
356 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
357# else
358 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
359# endif
360 if ((long) PL_mmap_page_size < 0) {
361 if (errno) {
44f8325f 362 SV * const error = ERRSV;
27da23d5 363 (void) SvUPGRADE(error, SVt_PV);
0510663f 364 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
365 }
366 else
367 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
368 }
369 }
370#else
371# ifdef HAS_GETPAGESIZE
372 PL_mmap_page_size = getpagesize();
373# else
374# if defined(I_SYS_PARAM) && defined(PAGESIZE)
375 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
376# endif
377# endif
378#endif
379 if (PL_mmap_page_size <= 0)
380 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
381 (IV) PL_mmap_page_size);
382 }
383#endif /* HAS_MMAP */
384
385#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
386 PL_timesbase.tms_utime = 0;
387 PL_timesbase.tms_stime = 0;
388 PL_timesbase.tms_cutime = 0;
389 PL_timesbase.tms_cstime = 0;
390#endif
391
8990e307 392 ENTER;
79072805
LW
393}
394
954c1994 395/*
62375a60
NIS
396=for apidoc nothreadhook
397
398Stub that provides thread hook for perl_destruct when there are
399no threads.
400
401=cut
402*/
403
404int
4e9e3734 405Perl_nothreadhook(pTHX)
62375a60
NIS
406{
407 return 0;
408}
409
41e4abd8
NC
410#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
411void
412Perl_dump_sv_child(pTHX_ SV *sv)
413{
414 ssize_t got;
bf357333
NC
415 const int sock = PL_dumper_fd;
416 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
417 union control_un control;
418 struct msghdr msg;
808ad2d0 419 struct iovec vec[2];
bf357333 420 struct cmsghdr *cmptr;
808ad2d0
NC
421 int returned_errno;
422 unsigned char buffer[256];
41e4abd8 423
bf357333 424 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
425 return;
426
427 PerlIO_flush(Perl_debug_log);
428
bf357333
NC
429 /* All these shenanigans are to pass a file descriptor over to our child for
430 it to dump out to. We can't let it hold open the file descriptor when it
431 forks, as the file descriptor it will dump to can turn out to be one end
432 of pipe that some other process will wait on for EOF. (So as it would
433 be open, the wait would be forever. */
434
435 msg.msg_control = control.control;
436 msg.msg_controllen = sizeof(control.control);
437 /* We're a connected socket so we don't need a destination */
438 msg.msg_name = NULL;
439 msg.msg_namelen = 0;
440 msg.msg_iov = vec;
808ad2d0 441 msg.msg_iovlen = 1;
bf357333
NC
442
443 cmptr = CMSG_FIRSTHDR(&msg);
444 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
445 cmptr->cmsg_level = SOL_SOCKET;
446 cmptr->cmsg_type = SCM_RIGHTS;
447 *((int *)CMSG_DATA(cmptr)) = 1;
448
449 vec[0].iov_base = (void*)&sv;
450 vec[0].iov_len = sizeof(sv);
451 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
452
453 if(got < 0) {
bf357333 454 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
455 abort();
456 }
bf357333
NC
457 if(got < sizeof(sv)) {
458 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
459 abort();
460 }
461
808ad2d0
NC
462 /* Return protocol is
463 int: errno value
464 unsigned char: length of location string (0 for empty)
465 unsigned char*: string (not terminated)
466 */
467 vec[0].iov_base = (void*)&returned_errno;
468 vec[0].iov_len = sizeof(returned_errno);
469 vec[1].iov_base = buffer;
470 vec[1].iov_len = 1;
471
472 got = readv(sock, vec, 2);
41e4abd8
NC
473
474 if(got < 0) {
475 perror("Debug leaking scalars parent read failed");
808ad2d0 476 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
477 abort();
478 }
808ad2d0 479 if(got < sizeof(returned_errno) + 1) {
41e4abd8 480 perror("Debug leaking scalars parent short read");
808ad2d0 481 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
482 abort();
483 }
484
808ad2d0
NC
485 if (*buffer) {
486 got = read(sock, buffer + 1, *buffer);
487 if(got < 0) {
488 perror("Debug leaking scalars parent read 2 failed");
489 PerlIO_flush(PerlIO_stderr());
490 abort();
491 }
492
493 if(got < *buffer) {
494 perror("Debug leaking scalars parent short read 2");
495 PerlIO_flush(PerlIO_stderr());
496 abort();
497 }
498 }
499
500 if (returned_errno || *buffer) {
501 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
502 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
503 returned_errno, strerror(returned_errno));
41e4abd8
NC
504 }
505}
506#endif
507
62375a60 508/*
954c1994
GS
509=for apidoc perl_destruct
510
511Shuts down a Perl interpreter. See L<perlembed>.
512
513=cut
514*/
515
31d77e54 516int
0cb96387 517perl_destruct(pTHXx)
79072805 518{
27da23d5 519 dVAR;
7c474504 520 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 521 HV *hv;
2aa47728 522#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
523 pid_t child;
524#endif
8990e307 525
9d4ba2ae
AL
526 PERL_UNUSED_ARG(my_perl);
527
7766f137
GS
528 /* wait for all pseudo-forked children to finish */
529 PERL_WAIT_FOR_CHILDREN;
530
3280af22 531 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
532#ifdef DEBUGGING
533 {
9d4ba2ae
AL
534 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
535 if (s) {
e1ec3a88 536 const int i = atoi(s);
5f05dabc
PP
537 if (destruct_level < i)
538 destruct_level = i;
539 }
4633a7c4
LW
540 }
541#endif
542
27da23d5 543 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
544 dJMPENV;
545 int x = 0;
546
547 JMPENV_PUSH(x);
1b6737cc 548 PERL_UNUSED_VAR(x);
f3faeb53
AB
549 if (PL_endav && !PL_minus_c)
550 call_list(PL_scopestack_ix, PL_endav);
551 JMPENV_POP;
26f423df 552 }
f3faeb53 553 LEAVE;
a0d0e21e
LW
554 FREETMPS;
555
e00b64d4 556 /* Need to flush since END blocks can produce output */
f13a2bc0 557 my_fflush_all();
e00b64d4 558
62375a60
NIS
559 if (CALL_FPTR(PL_threadhook)(aTHX)) {
560 /* Threads hook has vetoed further cleanup */
37038d91 561 return STATUS_EXIT;
62375a60
NIS
562 }
563
2aa47728
NC
564#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
565 if (destruct_level != 0) {
566 /* Fork here to create a child. Our child's job is to preserve the
567 state of scalars prior to destruction, so that we can instruct it
568 to dump any scalars that we later find have leaked.
569 There's no subtlety in this code - it assumes POSIX, and it doesn't
570 fail gracefully */
571 int fd[2];
572
573 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
574 perror("Debug leaking scalars socketpair failed");
575 abort();
576 }
577
578 child = fork();
579 if(child == -1) {
580 perror("Debug leaking scalars fork failed");
581 abort();
582 }
583 if (!child) {
584 /* We are the child */
3125a5a4
NC
585 const int sock = fd[1];
586 const int debug_fd = PerlIO_fileno(Perl_debug_log);
587 int f;
808ad2d0
NC
588 const char *where;
589 /* Our success message is an integer 0, and a char 0 */
590 static const char success[sizeof(int) + 1];
3125a5a4 591
2aa47728 592 close(fd[0]);
2aa47728 593
3125a5a4
NC
594 /* We need to close all other file descriptors otherwise we end up
595 with interesting hangs, where the parent closes its end of a
596 pipe, and sits waiting for (another) child to terminate. Only
597 that child never terminates, because it never gets EOF, because
bf357333
NC
598 we also have the far end of the pipe open. We even need to
599 close the debugging fd, because sometimes it happens to be one
600 end of a pipe, and a process is waiting on the other end for
601 EOF. Normally it would be closed at some point earlier in
602 destruction, but if we happen to cause the pipe to remain open,
603 EOF never occurs, and we get an infinite hang. Hence all the
604 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
605
606 f = sysconf(_SC_OPEN_MAX);
607 if(f < 0) {
808ad2d0
NC
608 where = "sysconf failed";
609 goto abort;
3125a5a4
NC
610 }
611 while (f--) {
612 if (f == sock)
613 continue;
3125a5a4
NC
614 close(f);
615 }
616
2aa47728
NC
617 while (1) {
618 SV *target;
bf357333
NC
619 union control_un control;
620 struct msghdr msg;
621 struct iovec vec[1];
622 struct cmsghdr *cmptr;
623 ssize_t got;
624 int got_fd;
625
626 msg.msg_control = control.control;
627 msg.msg_controllen = sizeof(control.control);
628 /* We're a connected socket so we don't need a source */
629 msg.msg_name = NULL;
630 msg.msg_namelen = 0;
631 msg.msg_iov = vec;
632 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
633
634 vec[0].iov_base = (void*)&target;
635 vec[0].iov_len = sizeof(target);
636
637 got = recvmsg(sock, &msg, 0);
2aa47728
NC
638
639 if(got == 0)
640 break;
641 if(got < 0) {
808ad2d0
NC
642 where = "recv failed";
643 goto abort;
2aa47728
NC
644 }
645 if(got < sizeof(target)) {
808ad2d0
NC
646 where = "short recv";
647 goto abort;
2aa47728 648 }
bf357333 649
808ad2d0
NC
650 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
651 where = "no cmsg";
652 goto abort;
653 }
654 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
655 where = "wrong cmsg_len";
656 goto abort;
657 }
658 if(cmptr->cmsg_level != SOL_SOCKET) {
659 where = "wrong cmsg_level";
660 goto abort;
661 }
662 if(cmptr->cmsg_type != SCM_RIGHTS) {
663 where = "wrong cmsg_type";
664 goto abort;
665 }
bf357333
NC
666
667 got_fd = *(int*)CMSG_DATA(cmptr);
668 /* For our last little bit of trickery, put the file descriptor
669 back into Perl_debug_log, as if we never actually closed it
670 */
808ad2d0
NC
671 if(got_fd != debug_fd) {
672 if (dup2(got_fd, debug_fd) == -1) {
673 where = "dup2";
674 goto abort;
675 }
676 }
2aa47728 677 sv_dump(target);
bf357333 678
2aa47728
NC
679 PerlIO_flush(Perl_debug_log);
680
808ad2d0 681 got = write(sock, &success, sizeof(success));
2aa47728
NC
682
683 if(got < 0) {
808ad2d0
NC
684 where = "write failed";
685 goto abort;
2aa47728 686 }
808ad2d0
NC
687 if(got < sizeof(success)) {
688 where = "short write";
689 goto abort;
2aa47728
NC
690 }
691 }
692 _exit(0);
808ad2d0
NC
693 abort:
694 {
695 int send_errno = errno;
696 unsigned char length = (unsigned char) strlen(where);
697 struct iovec failure[3] = {
698 {(void*)&send_errno, sizeof(send_errno)},
699 {&length, 1},
700 {(void*)where, length}
701 };
702 int got = writev(sock, failure, 3);
703 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
704 in the parent if we try to read from the socketpair after the
705 child has exited, even if there was data to read.
706 So sleep a bit to give the parent a fighting chance of
707 reading the data. */
708 sleep(2);
709 _exit((got == -1) ? errno : 0);
710 }
bf357333 711 /* End of child. */
2aa47728 712 }
41e4abd8 713 PL_dumper_fd = fd[0];
2aa47728
NC
714 close(fd[1]);
715 }
716#endif
717
ff0cee69
PP
718 /* We must account for everything. */
719
720 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
721 /* Do this now, because destroying ops can cause new SVs to be generated
722 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
723 PL_curcop to point to a valid op from which the filename structure
724 member is copied. */
725 PL_curcop = &PL_compiling;
3280af22 726 if (PL_main_root) {
4e380990
DM
727 /* ensure comppad/curpad to refer to main's pad */
728 if (CvPADLIST(PL_main_cv)) {
729 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
730 }
3280af22
NIS
731 op_free(PL_main_root);
732 PL_main_root = Nullop;
a0d0e21e 733 }
3280af22
NIS
734 PL_main_start = Nullop;
735 SvREFCNT_dec(PL_main_cv);
601f1833 736 PL_main_cv = NULL;
24d3c518 737 PL_dirty = TRUE;
ff0cee69 738
13621cfb
NIS
739 /* Tell PerlIO we are about to tear things apart in case
740 we have layers which are using resources that should
741 be cleaned up now.
742 */
743
744 PerlIO_destruct(aTHX);
745
3280af22 746 if (PL_sv_objcount) {
a0d0e21e
LW
747 /*
748 * Try to destruct global references. We do this first so that the
749 * destructors and destructees still exist. Some sv's might remain.
750 * Non-referenced objects are on their own.
751 */
a0d0e21e 752 sv_clean_objs();
bf9cdc68 753 PL_sv_objcount = 0;
a0de6cf5 754 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 755 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
756 }
757
5cd24f17 758 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 759 SvREFCNT_dec(PL_warnhook);
a0714e2c 760 PL_warnhook = NULL;
3280af22 761 SvREFCNT_dec(PL_diehook);
a0714e2c 762 PL_diehook = NULL;
5cd24f17 763
4b556e6c 764 /* call exit list functions */
3280af22 765 while (PL_exitlistlen-- > 0)
acfe0abc 766 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 767
3280af22 768 Safefree(PL_exitlist);
4b556e6c 769
1c4916e5
CB
770 PL_exitlist = NULL;
771 PL_exitlistlen = 0;
772
a0d0e21e 773 if (destruct_level == 0){
8990e307 774
a0d0e21e 775 DEBUG_P(debprofdump());
ac27b0f5 776
56a2bab7
NIS
777#if defined(PERLIO_LAYERS)
778 /* No more IO - including error messages ! */
779 PerlIO_cleanup(aTHX);
780#endif
781
a0d0e21e 782 /* The exit() function will do everything that needs doing. */
37038d91 783 return STATUS_EXIT;
a0d0e21e 784 }
5dd60ef7 785
551a8b83 786 /* jettison our possibly duplicated environment */
4b647fb0
DM
787 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
788 * so we certainly shouldn't free it here
789 */
2f42fcb0 790#ifndef PERL_MICRO
4b647fb0 791#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 792 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
793#ifdef USE_ITHREADS
794 /* only main thread can free environ[0] contents */
795 && PL_curinterp == aTHX
796#endif
797 )
798 {
551a8b83
JH
799 I32 i;
800
801 for (i = 0; environ[i]; i++)
4b420006 802 safesysfree(environ[i]);
0631ea03 803
4b420006
JH
804 /* Must use safesysfree() when working with environ. */
805 safesysfree(environ);
551a8b83
JH
806
807 environ = PL_origenviron;
808 }
809#endif
2f42fcb0 810#endif /* !PERL_MICRO */
551a8b83 811
804ffa60 812 /* reset so print() ends up where we expect */
a0714e2c 813 setdefout(NULL);
804ffa60 814
5f8cb046
DM
815#ifdef USE_ITHREADS
816 /* the syntax tree is shared between clones
817 * so op_free(PL_main_root) only ReREFCNT_dec's
818 * REGEXPs in the parent interpreter
819 * we need to manually ReREFCNT_dec for the clones
820 */
821 {
822 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 823 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
824
825 while (i) {
c4420975 826 SV * const resv = ary[--i];
35061a7e
DM
827
828 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 829 /* this is PL_reg_curpm, already freed
35061a7e
DM
830 * flag is set in regexec.c:S_regtry
831 */
832 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 833 }
1cc8b4c5
AB
834 else if(SvREPADTMP(resv)) {
835 SvREPADTMP_off(resv);
836 }
a560f29b
NC
837 else if(SvIOKp(resv)) {
838 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
839 ReREFCNT_dec(re);
840 }
841 }
842 }
843 SvREFCNT_dec(PL_regex_padav);
7d49f689 844 PL_regex_padav = NULL;
5f8cb046
DM
845 PL_regex_pad = NULL;
846#endif
847
081fc587
AB
848 SvREFCNT_dec((SV*) PL_stashcache);
849 PL_stashcache = NULL;
850
5f05dabc
PP
851 /* loosen bonds of global variables */
852
3280af22
NIS
853 if(PL_rsfp) {
854 (void)PerlIO_close(PL_rsfp);
855 PL_rsfp = Nullfp;
8ebc5c01
PP
856 }
857
858 /* Filters for program text */
3280af22 859 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 860 PL_rsfp_filters = NULL;
8ebc5c01
PP
861
862 /* switches */
3280af22
NIS
863 PL_preprocess = FALSE;
864 PL_minus_n = FALSE;
865 PL_minus_p = FALSE;
866 PL_minus_l = FALSE;
867 PL_minus_a = FALSE;
868 PL_minus_F = FALSE;
869 PL_doswitches = FALSE;
599cee73 870 PL_dowarn = G_WARN_OFF;
3280af22
NIS
871 PL_doextract = FALSE;
872 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
873 PL_unsafe = FALSE;
874
875 Safefree(PL_inplace);
bd61b366 876 PL_inplace = NULL;
a7cb1f99 877 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
878
879 if (PL_e_script) {
880 SvREFCNT_dec(PL_e_script);
a0714e2c 881 PL_e_script = NULL;
8ebc5c01
PP
882 }
883
bf9cdc68
RG
884 PL_perldb = 0;
885
8ebc5c01
PP
886 /* magical thingies */
887
7889fe52 888 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 889 PL_ofs_sv = NULL;
5f05dabc 890
7889fe52 891 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 892 PL_ors_sv = NULL;
8ebc5c01 893
3280af22 894 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 895 PL_rs = NULL;
dc92893f 896
d33b2eba
GS
897 PL_multiline = 0; /* $* */
898 Safefree(PL_osname); /* $^O */
bd61b366 899 PL_osname = NULL;
5f05dabc 900
3280af22 901 SvREFCNT_dec(PL_statname);
a0714e2c
SS
902 PL_statname = NULL;
903 PL_statgv = NULL;
5f05dabc 904
8ebc5c01
PP
905 /* defgv, aka *_ should be taken care of elsewhere */
906
8ebc5c01 907 /* clean up after study() */
3280af22 908 SvREFCNT_dec(PL_lastscream);
a0714e2c 909 PL_lastscream = NULL;
3280af22
NIS
910 Safefree(PL_screamfirst);
911 PL_screamfirst = 0;
912 Safefree(PL_screamnext);
913 PL_screamnext = 0;
8ebc5c01 914
7d5ea4e7
GS
915 /* float buffer */
916 Safefree(PL_efloatbuf);
bd61b366 917 PL_efloatbuf = NULL;
7d5ea4e7
GS
918 PL_efloatsize = 0;
919
8ebc5c01 920 /* startup and shutdown function lists */
3280af22 921 SvREFCNT_dec(PL_beginav);
5a837c8f 922 SvREFCNT_dec(PL_beginav_save);
3280af22 923 SvREFCNT_dec(PL_endav);
7d30b5c4 924 SvREFCNT_dec(PL_checkav);
ece599bd 925 SvREFCNT_dec(PL_checkav_save);
3280af22 926 SvREFCNT_dec(PL_initav);
7d49f689
NC
927 PL_beginav = NULL;
928 PL_beginav_save = NULL;
929 PL_endav = NULL;
930 PL_checkav = NULL;
931 PL_checkav_save = NULL;
932 PL_initav = NULL;
5618dfe8 933
8ebc5c01 934 /* shortcuts just get cleared */
a0714e2c
SS
935 PL_envgv = NULL;
936 PL_incgv = NULL;
937 PL_hintgv = NULL;
938 PL_errgv = NULL;
939 PL_argvgv = NULL;
940 PL_argvoutgv = NULL;
941 PL_stdingv = NULL;
942 PL_stderrgv = NULL;
943 PL_last_in_gv = NULL;
944 PL_replgv = NULL;
945 PL_DBgv = NULL;
946 PL_DBline = NULL;
947 PL_DBsub = NULL;
948 PL_DBsingle = NULL;
949 PL_DBtrace = NULL;
950 PL_DBsignal = NULL;
951 PL_DBassertion = NULL;
601f1833 952 PL_DBcv = NULL;
7d49f689 953 PL_dbargs = NULL;
5c284bb0 954 PL_debstash = NULL;
8ebc5c01 955
7a1c5554 956 SvREFCNT_dec(PL_argvout_stack);
7d49f689 957 PL_argvout_stack = NULL;
8ebc5c01 958
5c831c24 959 SvREFCNT_dec(PL_modglobal);
5c284bb0 960 PL_modglobal = NULL;
5c831c24 961 SvREFCNT_dec(PL_preambleav);
7d49f689 962 PL_preambleav = NULL;
5c831c24 963 SvREFCNT_dec(PL_subname);
a0714e2c 964 PL_subname = NULL;
5c831c24 965 SvREFCNT_dec(PL_linestr);
a0714e2c 966 PL_linestr = NULL;
ca0c25f6 967#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 968 SvREFCNT_dec(PL_pidstatus);
5c284bb0 969 PL_pidstatus = NULL;
ca0c25f6 970#endif
5c831c24 971 SvREFCNT_dec(PL_toptarget);
a0714e2c 972 PL_toptarget = NULL;
5c831c24 973 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
974 PL_bodytarget = NULL;
975 PL_formtarget = NULL;
5c831c24 976
d33b2eba 977 /* free locale stuff */
b9582b6a 978#ifdef USE_LOCALE_COLLATE
d33b2eba 979 Safefree(PL_collation_name);
bd61b366 980 PL_collation_name = NULL;
b9582b6a 981#endif
d33b2eba 982
b9582b6a 983#ifdef USE_LOCALE_NUMERIC
d33b2eba 984 Safefree(PL_numeric_name);
bd61b366 985 PL_numeric_name = NULL;
a453c169 986 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 987 PL_numeric_radix_sv = NULL;
b9582b6a 988#endif
d33b2eba 989
5c831c24
GS
990 /* clear utf8 character classes */
991 SvREFCNT_dec(PL_utf8_alnum);
992 SvREFCNT_dec(PL_utf8_alnumc);
993 SvREFCNT_dec(PL_utf8_ascii);
994 SvREFCNT_dec(PL_utf8_alpha);
995 SvREFCNT_dec(PL_utf8_space);
996 SvREFCNT_dec(PL_utf8_cntrl);
997 SvREFCNT_dec(PL_utf8_graph);
998 SvREFCNT_dec(PL_utf8_digit);
999 SvREFCNT_dec(PL_utf8_upper);
1000 SvREFCNT_dec(PL_utf8_lower);
1001 SvREFCNT_dec(PL_utf8_print);
1002 SvREFCNT_dec(PL_utf8_punct);
1003 SvREFCNT_dec(PL_utf8_xdigit);
1004 SvREFCNT_dec(PL_utf8_mark);
1005 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1006 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1007 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1008 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1009 SvREFCNT_dec(PL_utf8_idstart);
1010 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1011 PL_utf8_alnum = NULL;
1012 PL_utf8_alnumc = NULL;
1013 PL_utf8_ascii = NULL;
1014 PL_utf8_alpha = NULL;
1015 PL_utf8_space = NULL;
1016 PL_utf8_cntrl = NULL;
1017 PL_utf8_graph = NULL;
1018 PL_utf8_digit = NULL;
1019 PL_utf8_upper = NULL;
1020 PL_utf8_lower = NULL;
1021 PL_utf8_print = NULL;
1022 PL_utf8_punct = NULL;
1023 PL_utf8_xdigit = NULL;
1024 PL_utf8_mark = NULL;
1025 PL_utf8_toupper = NULL;
1026 PL_utf8_totitle = NULL;
1027 PL_utf8_tolower = NULL;
1028 PL_utf8_tofold = NULL;
1029 PL_utf8_idstart = NULL;
1030 PL_utf8_idcont = NULL;
5c831c24 1031
971a9dd3
GS
1032 if (!specialWARN(PL_compiling.cop_warnings))
1033 SvREFCNT_dec(PL_compiling.cop_warnings);
a0714e2c 1034 PL_compiling.cop_warnings = NULL;
ac27b0f5
NIS
1035 if (!specialCopIO(PL_compiling.cop_io))
1036 SvREFCNT_dec(PL_compiling.cop_io);
a0714e2c 1037 PL_compiling.cop_io = 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
a0d0e21e 1053 FREETMPS;
0453d815 1054 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1055 if (PL_scopestack_ix != 0)
9014280d 1056 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1057 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1058 (long)PL_scopestack_ix);
1059 if (PL_savestack_ix != 0)
9014280d 1060 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1061 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1062 (long)PL_savestack_ix);
1063 if (PL_tmps_floor != -1)
9014280d 1064 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1065 (long)PL_tmps_floor + 1);
a0d0e21e 1066 if (cxstack_ix != -1)
9014280d 1067 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1068 (long)cxstack_ix + 1);
a0d0e21e 1069 }
8990e307
LW
1070
1071 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1072 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1073 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1074
1075 /* the 2 is for PL_fdpid and PL_strtab */
1076 while (PL_sv_count > 2 && sv_clean_all())
1077 ;
1078
d33b2eba
GS
1079 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1080 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1081 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1082 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1083
d4777f27
GS
1084 AvREAL_off(PL_fdpid); /* no surviving entries */
1085 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1086 PL_fdpid = NULL;
d33b2eba 1087
6c644e78
GS
1088#ifdef HAVE_INTERP_INTERN
1089 sys_intern_clear();
1090#endif
1091
6e72f9df
PP
1092 /* Destruct the global string table. */
1093 {
1094 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1095 * so that sv_free() won't fail on them.
80459961
NC
1096 * Now that the global string table is using a single hunk of memory
1097 * for both HE and HEK, we either need to explicitly unshare it the
1098 * correct way, or actually free things here.
6e72f9df 1099 */
80459961
NC
1100 I32 riter = 0;
1101 const I32 max = HvMAX(PL_strtab);
c4420975 1102 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1103 HE *hent = array[0];
1104
6e72f9df 1105 for (;;) {
0453d815 1106 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1107 HE * const next = HeNEXT(hent);
9014280d 1108 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1109 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1110 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1111 Safefree(hent);
1112 hent = next;
6e72f9df
PP
1113 }
1114 if (!hent) {
1115 if (++riter > max)
1116 break;
1117 hent = array[riter];
1118 }
1119 }
80459961
NC
1120
1121 Safefree(array);
1122 HvARRAY(PL_strtab) = 0;
1123 HvTOTALKEYS(PL_strtab) = 0;
1124 HvFILL(PL_strtab) = 0;
6e72f9df 1125 }
3280af22 1126 SvREFCNT_dec(PL_strtab);
6e72f9df 1127
e652bb2f 1128#ifdef USE_ITHREADS
c21d1a0f 1129 /* free the pointer tables used for cloning */
a0739874 1130 ptr_table_free(PL_ptr_table);
bf9cdc68 1131 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1132#endif
a0739874 1133
d33b2eba
GS
1134 /* free special SVs */
1135
1136 SvREFCNT(&PL_sv_yes) = 0;
1137 sv_clear(&PL_sv_yes);
1138 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1139 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1140
1141 SvREFCNT(&PL_sv_no) = 0;
1142 sv_clear(&PL_sv_no);
1143 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1144 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1145
9f375a43
DM
1146 {
1147 int i;
1148 for (i=0; i<=2; i++) {
1149 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1150 sv_clear(PERL_DEBUG_PAD(i));
1151 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1152 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1153 }
1154 }
1155
0453d815 1156 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1157 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1158
eba0f806
DM
1159#ifdef DEBUG_LEAKING_SCALARS
1160 if (PL_sv_count != 0) {
1161 SV* sva;
1162 SV* sv;
1163 register SV* svend;
1164
1165 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1166 svend = &sva[SvREFCNT(sva)];
1167 for (sv = sva + 1; sv < svend; ++sv) {
1168 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1169 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1170 " flags=0x%"UVxf
fd0854ff
DM
1171 " refcnt=%"UVuf pTHX__FORMAT "\n"
1172 "\tallocated at %s:%d %s %s%s\n",
1173 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1174 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1175 sv->sv_debug_line,
1176 sv->sv_debug_inpad ? "for" : "by",
1177 sv->sv_debug_optype ?
1178 PL_op_name[sv->sv_debug_optype]: "(none)",
1179 sv->sv_debug_cloned ? " (cloned)" : ""
1180 );
2aa47728 1181#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1182 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1183#endif
eba0f806
DM
1184 }
1185 }
1186 }
1187 }
2aa47728
NC
1188#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1189 {
1190 int status;
1191 fd_set rset;
1192 /* Wait for up to 4 seconds for child to terminate.
1193 This seems to be the least effort way of timing out on reaping
1194 its exit status. */
1195 struct timeval waitfor = {4, 0};
41e4abd8 1196 int sock = PL_dumper_fd;
2aa47728
NC
1197
1198 shutdown(sock, 1);
1199 FD_ZERO(&rset);
1200 FD_SET(sock, &rset);
1201 select(sock + 1, &rset, NULL, NULL, &waitfor);
1202 waitpid(child, &status, WNOHANG);
1203 close(sock);
1204 }
1205#endif
eba0f806 1206#endif
bf9cdc68 1207 PL_sv_count = 0;
eba0f806
DM
1208
1209
56a2bab7 1210#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1211 /* No more IO - including error messages ! */
1212 PerlIO_cleanup(aTHX);
1213#endif
1214
9f4bd222 1215 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1216 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1217 for no arg - and will try and SvREFCNT_dec it.
1218 */
1219 SvREFCNT(&PL_sv_undef) = 0;
1220 SvREADONLY_off(&PL_sv_undef);
1221
3280af22 1222 Safefree(PL_origfilename);
bd61b366 1223 PL_origfilename = NULL;
3280af22 1224 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1225 PL_reg_start_tmp = (char**)NULL;
1226 PL_reg_start_tmpl = 0;
43c5f42d 1227 Safefree(PL_reg_curpm);
82ba1be6 1228 Safefree(PL_reg_poscache);
dd28f7bb 1229 free_tied_hv_pool();
3280af22 1230 Safefree(PL_op_mask);
cf36064f 1231 Safefree(PL_psig_ptr);
bf9cdc68 1232 PL_psig_ptr = (SV**)NULL;
cf36064f 1233 Safefree(PL_psig_name);
bf9cdc68 1234 PL_psig_name = (SV**)NULL;
2c2666fc 1235 Safefree(PL_bitcount);
bd61b366 1236 PL_bitcount = NULL;
ce08f86c 1237 Safefree(PL_psig_pend);
bf9cdc68 1238 PL_psig_pend = (int*)NULL;
a0714e2c 1239 PL_formfeed = NULL;
6e72f9df 1240 nuke_stacks();
bf9cdc68
RG
1241 PL_tainting = FALSE;
1242 PL_taint_warn = FALSE;
3280af22 1243 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1244 PL_debug = 0;
ac27b0f5 1245
a0d0e21e 1246 DEBUG_P(debprofdump());
d33b2eba 1247
e5dd39fc 1248#ifdef USE_REENTRANT_API
10bc17b6 1249 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1250#endif
1251
612f20c3
GS
1252 sv_free_arenas();
1253
fc36a67e
PP
1254 /* As the absolutely last thing, free the non-arena SV for mess() */
1255
3280af22 1256 if (PL_mess_sv) {
f350b448
NC
1257 /* we know that type == SVt_PVMG */
1258
9c63abab 1259 /* it could have accumulated taint magic */
f350b448
NC
1260 MAGIC* mg;
1261 MAGIC* moremagic;
1262 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1263 moremagic = mg->mg_moremagic;
1264 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1265 && mg->mg_len >= 0)
1266 Safefree(mg->mg_ptr);
1267 Safefree(mg);
9c63abab 1268 }
f350b448 1269
fc36a67e 1270 /* we know that type >= SVt_PV */
8bd4d4c5 1271 SvPV_free(PL_mess_sv);
3280af22
NIS
1272 Safefree(SvANY(PL_mess_sv));
1273 Safefree(PL_mess_sv);
a0714e2c 1274 PL_mess_sv = NULL;
fc36a67e 1275 }
37038d91 1276 return STATUS_EXIT;
79072805
LW
1277}
1278
954c1994
GS
1279/*
1280=for apidoc perl_free
1281
1282Releases a Perl interpreter. See L<perlembed>.
1283
1284=cut
1285*/
1286
79072805 1287void
0cb96387 1288perl_free(pTHXx)
79072805 1289{
7cb608b5
NC
1290#ifdef PERL_TRACK_MEMPOOL
1291 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1292 thread at thread exit. */
1293 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1294 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1295#endif
1296
acfe0abc 1297#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1298# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1299 {
acfe0abc 1300# ifdef NETWARE
7af12a34 1301 void *host = nw_internal_host;
acfe0abc 1302# else
7af12a34 1303 void *host = w32_internal_host;
acfe0abc 1304# endif
7af12a34 1305 PerlMem_free(aTHXx);
acfe0abc 1306# ifdef NETWARE
7af12a34 1307 nw_delete_internal_host(host);
acfe0abc 1308# else
7af12a34 1309 win32_delete_internal_host(host);
acfe0abc 1310# endif
7af12a34 1311 }
1c0ca838
GS
1312# else
1313 PerlMem_free(aTHXx);
1314# endif
acfe0abc
GS
1315#else
1316 PerlMem_free(aTHXx);
76e3520e 1317#endif
79072805
LW
1318}
1319
b7f7fff6 1320#if defined(USE_ITHREADS)
aebd1ac7
GA
1321/* provide destructors to clean up the thread key when libperl is unloaded */
1322#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1323
110d3f98 1324#if defined(__hpux) && __ux_version > 1020 && !defined(__GNUC__)
aebd1ac7
GA
1325#pragma fini "perl_fini"
1326#endif
1327
0dbb1585
AL
1328static void
1329#if defined(__GNUC__)
1330__attribute__((destructor))
aebd1ac7 1331#endif
de009b76 1332perl_fini(void)
aebd1ac7 1333{
27da23d5 1334 dVAR;
aebd1ac7
GA
1335 if (PL_curinterp)
1336 FREE_THREAD_KEY;
1337}
1338
1339#endif /* WIN32 */
1340#endif /* THREADS */
1341
4b556e6c 1342void
864dbfa3 1343Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1344{
97aff369 1345 dVAR;
3280af22
NIS
1346 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1347 PL_exitlist[PL_exitlistlen].fn = fn;
1348 PL_exitlist[PL_exitlistlen].ptr = ptr;
1349 ++PL_exitlistlen;
4b556e6c
JD
1350}
1351
56cf6df8
RGS
1352#ifdef HAS_PROCSELFEXE
1353/* This is a function so that we don't hold on to MAXPATHLEN
1354 bytes of stack longer than necessary
1355 */
1356STATIC void
e1ec3a88 1357S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1358{
1359 char buf[MAXPATHLEN];
1360 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1361
1362 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1363 includes a spurious NUL which will cause $^X to fail in system
1364 or backticks (this will prevent extensions from being built and
1365 many tests from working). readlink is not meant to add a NUL.
1366 Normal readlink works fine.
1367 */
1368 if (len > 0 && buf[len-1] == '\0') {
1369 len--;
1370 }
1371
1372 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1373 returning the text "unknown" from the readlink rather than the path
1374 to the executable (or returning an error from the readlink). Any valid
1375 path has a '/' in it somewhere, so use that to validate the result.
1376 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1377 */
1378 if (len > 0 && memchr(buf, '/', len)) {
1379 sv_setpvn(sv,buf,len);
1380 }
1381 else {
1382 sv_setpv(sv,arg0);
1383 }
1384}
1385#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1386
1387STATIC void
1388S_set_caret_X(pTHX) {
97aff369 1389 dVAR;
fafc274c 1390 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1391 if (tmpgv) {
1392#ifdef HAS_PROCSELFEXE
1393 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1394#else
1395#ifdef OS2
c69033f2 1396 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1397#else
c69033f2 1398 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1399#endif
1400#endif
1401 }
1402}
1403
954c1994
GS
1404/*
1405=for apidoc perl_parse
1406
1407Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1408
1409=cut
1410*/
1411
79072805 1412int
0cb96387 1413perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1414{
27da23d5 1415 dVAR;
6224f72b 1416 I32 oldscope;
6224f72b 1417 int ret;
db36c5a1 1418 dJMPENV;
8d063cd8 1419
9d4ba2ae
AL
1420 PERL_UNUSED_VAR(my_perl);
1421
a687059c
LW
1422#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1423#ifdef IAMSUID
1424#undef IAMSUID
cea2e8a9 1425 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1426setuid perl scripts securely.\n");
ae3f3efd 1427#endif /* IAMSUID */
a687059c
LW
1428#endif
1429
b0891165
JH
1430#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1431 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1432 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1433 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1434 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1435 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1436 if (!PL_rehash_seed_set)
1437 PL_rehash_seed = get_hash_seed();
b0891165 1438 {
9d4ba2ae 1439 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1440
1b6737cc
AL
1441 if (s && (atoi(s) == 1))
1442 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1443 }
1444#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1445
3280af22 1446 PL_origargc = argc;
e2975953 1447 PL_origargv = argv;
a0d0e21e 1448
a2722ac9
GA
1449 if (PL_origalen != 0) {
1450 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1451 }
1452 else {
3cb9023d
JH
1453 /* Set PL_origalen be the sum of the contiguous argv[]
1454 * elements plus the size of the env in case that it is
e9137a8e 1455 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1456 * as the maximum modifiable length of $0. In the worst case
1457 * the area we are able to modify is limited to the size of
43c32782 1458 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1459 * --jhi */
e1ec3a88 1460 const char *s = NULL;
54bfe034 1461 int i;
1b6737cc 1462 const UV mask =
7d8e7db3 1463 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1464 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1465 const UV aligned =
43c32782
JH
1466 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1467
1468 /* See if all the arguments are contiguous in memory. Note
1469 * that 'contiguous' is a loose term because some platforms
1470 * align the argv[] and the envp[]. If the arguments look
1471 * like non-aligned, assume that they are 'strictly' or
1472 * 'traditionally' contiguous. If the arguments look like
1473 * aligned, we just check that they are within aligned
1474 * PTRSIZE bytes. As long as no system has something bizarre
1475 * like the argv[] interleaved with some other data, we are
1476 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1477 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1478 while (*s) s++;
1479 for (i = 1; i < PL_origargc; i++) {
1480 if ((PL_origargv[i] == s + 1
43c32782 1481#ifdef OS2
c8941eeb 1482 || PL_origargv[i] == s + 2
43c32782 1483#endif
c8941eeb
JH
1484 )
1485 ||
1486 (aligned &&
1487 (PL_origargv[i] > s &&
1488 PL_origargv[i] <=
1489 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1490 )
1491 {
1492 s = PL_origargv[i];
1493 while (*s) s++;
1494 }
1495 else
1496 break;
54bfe034 1497 }
54bfe034 1498 }
3cb9023d 1499 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1500 if (s && PL_origenviron) {
43c32782
JH
1501 if ((PL_origenviron[0] == s + 1
1502#ifdef OS2
1503 || (PL_origenviron[0] == s + 9 && (s += 8))
1504#endif
1505 )
1506 ||
1507 (aligned &&
1508 (PL_origenviron[0] > s &&
1509 PL_origenviron[0] <=
1510 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1511 )
1512 {
1513#ifndef OS2
1514 s = PL_origenviron[0];
1515 while (*s) s++;
1516#endif
bd61b366 1517 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1518 /* Force copy of environment. */
1519 for (i = 1; PL_origenviron[i]; i++) {
1520 if (PL_origenviron[i] == s + 1
1521 ||
1522 (aligned &&
1523 (PL_origenviron[i] > s &&
1524 PL_origenviron[i] <=
1525 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1526 )
1527 {
1528 s = PL_origenviron[i];
1529 while (*s) s++;
1530 }
1531 else
1532 break;
54bfe034 1533 }
43c32782 1534 }
54bfe034 1535 }
2d2af554 1536 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1537 }
1538
3280af22 1539 if (PL_do_undump) {
a0d0e21e
LW
1540
1541 /* Come here if running an undumped a.out. */
1542
3280af22
NIS
1543 PL_origfilename = savepv(argv[0]);
1544 PL_do_undump = FALSE;
a0d0e21e 1545 cxstack_ix = -1; /* start label stack again */
748a9306 1546 init_ids();
b7975bdd
NC
1547 assert (!PL_tainted);
1548 TAINT;
1549 S_set_caret_X(aTHX);
1550 TAINT_NOT;
a0d0e21e
LW
1551 init_postdump_symbols(argc,argv,env);
1552 return 0;
1553 }
1554
3280af22 1555 if (PL_main_root) {
3280af22
NIS
1556 op_free(PL_main_root);
1557 PL_main_root = Nullop;
ff0cee69 1558 }
3280af22
NIS
1559 PL_main_start = Nullop;
1560 SvREFCNT_dec(PL_main_cv);
601f1833 1561 PL_main_cv = NULL;
79072805 1562
3280af22
NIS
1563 time(&PL_basetime);
1564 oldscope = PL_scopestack_ix;
599cee73 1565 PL_dowarn = G_WARN_OFF;
f86702cc 1566
14dd3ad8 1567 JMPENV_PUSH(ret);
6224f72b 1568 switch (ret) {
312caa8e 1569 case 0:
14dd3ad8 1570 parse_body(env,xsinit);
7d30b5c4
GS
1571 if (PL_checkav)
1572 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1573 ret = 0;
1574 break;
6224f72b
GS
1575 case 1:
1576 STATUS_ALL_FAILURE;
1577 /* FALL THROUGH */
1578 case 2:
1579 /* my_exit() was called */
3280af22 1580 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1581 LEAVE;
1582 FREETMPS;
3280af22 1583 PL_curstash = PL_defstash;
7d30b5c4
GS
1584 if (PL_checkav)
1585 call_list(oldscope, PL_checkav);
37038d91 1586 ret = STATUS_EXIT;
14dd3ad8 1587 break;
6224f72b 1588 case 3:
bf49b057 1589 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1590 ret = 1;
1591 break;
6224f72b 1592 }
14dd3ad8
GS
1593 JMPENV_POP;
1594 return ret;
1595}
1596
312caa8e 1597STATIC void *
14dd3ad8 1598S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1599{
27da23d5 1600 dVAR;
312caa8e 1601 int argc = PL_origargc;
8f42b153 1602 char **argv = PL_origargv;
e1ec3a88 1603 const char *scriptname = NULL;
312caa8e 1604 VOL bool dosearch = FALSE;
e1ec3a88 1605 const char *validarg = "";
312caa8e
CS
1606 register SV *sv;
1607 register char *s;
bd61b366 1608 const char *cddir = NULL;
ab019eaa 1609#ifdef USE_SITECUSTOMIZE
20ef40cf 1610 bool minus_f = FALSE;
ab019eaa 1611#endif
312caa8e 1612
3280af22 1613 sv_setpvn(PL_linestr,"",0);
396482e1 1614 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1615 SAVEFREESV(sv);
1616 init_main_stash();
54310121 1617
6224f72b
GS
1618 for (argc--,argv++; argc > 0; argc--,argv++) {
1619 if (argv[0][0] != '-' || !argv[0][1])
1620 break;
1621#ifdef DOSUID
1622 if (*validarg)
1623 validarg = " PHOOEY ";
1624 else
1625 validarg = argv[0];
ae3f3efd
PS
1626 /*
1627 * Can we rely on the kernel to start scripts with argv[1] set to
1628 * contain all #! line switches (the whole line)? (argv[0] is set to
1629 * the interpreter name, argv[2] to the script name; argv[3] and
1630 * above may contain other arguments.)
1631 */
13281fa4 1632#endif
6224f72b
GS
1633 s = argv[0]+1;
1634 reswitch:
1635 switch (*s) {
729a02f2 1636 case 'C':
1d5472a9
GS
1637#ifndef PERL_STRICT_CR
1638 case '\r':
1639#endif
6224f72b
GS
1640 case ' ':
1641 case '0':
1642 case 'F':
1643 case 'a':
1644 case 'c':
1645 case 'd':
1646 case 'D':
1647 case 'h':
1648 case 'i':
1649 case 'l':
1650 case 'M':
1651 case 'm':
1652 case 'n':
1653 case 'p':
1654 case 's':
1655 case 'u':
1656 case 'U':
1657 case 'v':
599cee73
PM
1658 case 'W':
1659 case 'X':
6224f72b 1660 case 'w':
06492da6 1661 case 'A':
97bd5664 1662 if ((s = moreswitches(s)))
6224f72b
GS
1663 goto reswitch;
1664 break;
33b78306 1665
1dbad523 1666 case 't':
22f7c9c9 1667 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1668 if( !PL_tainting ) {
1669 PL_taint_warn = TRUE;
1670 PL_tainting = TRUE;
1671 }
1672 s++;
1673 goto reswitch;
6224f72b 1674 case 'T':
22f7c9c9 1675 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1676 PL_tainting = TRUE;
317ea90d 1677 PL_taint_warn = FALSE;
6224f72b
GS
1678 s++;
1679 goto reswitch;
f86702cc 1680
bc9b29db
RH
1681 case 'E':
1682 PL_minus_E = TRUE;
1683 /* FALL THROUGH */
6224f72b 1684 case 'e':
bf4acbe4
GS
1685#ifdef MACOS_TRADITIONAL
1686 /* ignore -e for Dev:Pseudo argument */
1687 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1688 break;
bf4acbe4 1689#endif
a52eba0e 1690 forbid_setid('e', -1);
3280af22 1691 if (!PL_e_script) {
396482e1 1692 PL_e_script = newSVpvs("");
0cb96387 1693 filter_add(read_e_script, NULL);
6224f72b
GS
1694 }
1695 if (*++s)
3280af22 1696 sv_catpv(PL_e_script, s);
6224f72b 1697 else if (argv[1]) {
3280af22 1698 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1699 argc--,argv++;
1700 }
1701 else
bc9b29db 1702 Perl_croak(aTHX_ "No code specified for -%c", *s);
396482e1 1703 sv_catpvs(PL_e_script, "\n");
6224f72b 1704 break;
afe37c7d 1705
20ef40cf 1706 case 'f':
f5542d3a 1707#ifdef USE_SITECUSTOMIZE
20ef40cf 1708 minus_f = TRUE;
f5542d3a 1709#endif
20ef40cf
GA
1710 s++;
1711 goto reswitch;
1712
6224f72b 1713 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1714 forbid_setid('I', -1);
bd61b366 1715 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1716 argc--,argv++;
1717 }
6224f72b 1718 if (s && *s) {
0df16ed7 1719 STRLEN len = strlen(s);
aec46f14 1720 const char * const p = savepvn(s, len);
88fe16b2 1721 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1722 sv_catpvs(sv, "-I");
0df16ed7 1723 sv_catpvn(sv, p, len);
396482e1 1724 sv_catpvs(sv, " ");
6224f72b 1725 Safefree(p);
0df16ed7
GS
1726 }
1727 else
a67e862a 1728 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1729 break;
1730 case 'P':
a52eba0e 1731 forbid_setid('P', -1);
3280af22 1732 PL_preprocess = TRUE;
6224f72b
GS
1733 s++;
1734 goto reswitch;
1735 case 'S':
a52eba0e 1736 forbid_setid('S', -1);
6224f72b
GS
1737 dosearch = TRUE;
1738 s++;
1739 goto reswitch;
1740 case 'V':
7edfd0ef
NC
1741 {
1742 SV *opts_prog;
1743
1744 if (!PL_preambleav)
1745 PL_preambleav = newAV();
1746 av_push(PL_preambleav,
396482e1 1747 newSVpvs("use Config;"));
7edfd0ef
NC
1748 if (*++s != ':') {
1749 STRLEN opts;
1750
396482e1 1751 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1752#ifdef VMS
396482e1 1753 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1754#else
396482e1 1755 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1756#endif
7edfd0ef 1757 opts = SvCUR(opts_prog);
efcaa95b 1758
9cd7d3f2 1759 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1760# ifdef DEBUGGING
e2e4dbf1 1761 " DEBUGGING"
6224f72b 1762# endif
4f185743
NC
1763# ifdef DEBUG_LEAKING_SCALARS
1764 " DEBUG_LEAKING_SCALARS"
1765# endif
85e1fcb9 1766# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1767 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1768# endif
1769# ifdef FAKE_THREADS
e2e4dbf1 1770 " FAKE_THREADS"
85e1fcb9 1771# endif
6224f72b 1772# ifdef MULTIPLICITY
e2e4dbf1 1773 " MULTIPLICITY"
6224f72b 1774# endif
85e1fcb9 1775# ifdef MYMALLOC
e2e4dbf1 1776 " MYMALLOC"
85e1fcb9 1777# endif
3bcf5ed8
SP
1778# ifdef NO_MATHOMS
1779 " NO_MATHOMS"
1780# endif
85e1fcb9 1781# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1782 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1783# endif
1784# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1785 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1786# endif
1787# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1788 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1789# endif
1790# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1791 " PERL_IMPLICIT_SYS"
85e1fcb9
SH
1792# endif
1793# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1794 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1795# endif
1796# ifdef PERL_NEED_APPCTX
e2e4dbf1 1797 " PERL_NEED_APPCTX"
85e1fcb9
SH
1798# endif
1799# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1800 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1801# endif
1802# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1803 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1804# endif
9c0a4d5d
DM
1805# ifdef PERL_TRACK_MEMPOOL
1806 " PERL_TRACK_MEMPOOL"
1807# endif
417cd4a8
SP
1808# ifdef PERL_USE_SAFE_PUTENV
1809 " PERL_USE_SAFE_PUTENV"
1810# endif
ca0c25f6
NC
1811#ifdef PERL_USES_PL_PIDSTATUS
1812 " PERL_USES_PL_PIDSTATUS"
1813#endif
85e1fcb9 1814# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1815 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1816# endif
1817# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1818 " THREADS_HAVE_PIDS"
85e1fcb9 1819# endif
85e1fcb9 1820# ifdef USE_64_BIT_ALL
e2e4dbf1 1821 " USE_64_BIT_ALL"
ac5e8965 1822# endif
10cc9d2a 1823# ifdef USE_64_BIT_INT
e2e4dbf1 1824 " USE_64_BIT_INT"
10cc9d2a 1825# endif
85e1fcb9 1826# ifdef USE_ITHREADS
e2e4dbf1 1827 " USE_ITHREADS"
85e1fcb9
SH
1828# endif
1829# ifdef USE_LARGE_FILES
e2e4dbf1 1830 " USE_LARGE_FILES"
ac5e8965
JH
1831# endif
1832# ifdef USE_LONG_DOUBLE
e2e4dbf1 1833 " USE_LONG_DOUBLE"
ac5e8965 1834# endif
85e1fcb9 1835# ifdef USE_PERLIO
e2e4dbf1 1836 " USE_PERLIO"
53430762 1837# endif
85e1fcb9 1838# ifdef USE_REENTRANT_API
e2e4dbf1 1839 " USE_REENTRANT_API"
85e1fcb9
SH
1840# endif
1841# ifdef USE_SFIO
e2e4dbf1 1842 " USE_SFIO"
ac5e8965 1843# endif
20ef40cf 1844# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1845 " USE_SITECUSTOMIZE"
20ef40cf 1846# endif
85e1fcb9 1847# ifdef USE_SOCKS
e2e4dbf1 1848 " USE_SOCKS"
b363f7ed 1849# endif
e2e4dbf1 1850 );
efcaa95b 1851
7edfd0ef
NC
1852 while (SvCUR(opts_prog) > opts+76) {
1853 /* find last space after "options: " and before col 76
1854 */
efcaa95b 1855
7edfd0ef 1856 const char *space;
c4420975 1857 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1858 const char c = pv[opts+76];
1859 pv[opts+76] = '\0';
1860 space = strrchr(pv+opts+26, ' ');
1861 pv[opts+76] = c;
1862 if (!space) break; /* "Can't happen" */
efcaa95b 1863
7edfd0ef 1864 /* break the line before that space */
efcaa95b 1865
7edfd0ef 1866 opts = space - pv;
89529cee 1867 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1868 STR_WITH_LEN("\\n "));
7edfd0ef 1869 }
efcaa95b 1870
396482e1 1871 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1872
6224f72b 1873#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1874 if (LOCAL_PATCH_COUNT > 0) {
1875 int i;
396482e1 1876 sv_catpvs(opts_prog,
7edfd0ef
NC
1877 "\" Locally applied patches:\\n\",");
1878 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1879 if (PL_localpatches[i])
1880 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1881 0, PL_localpatches[i], 0);
1882 }
6224f72b 1883 }
6224f72b 1884#endif
7edfd0ef
NC
1885 Perl_sv_catpvf(aTHX_ opts_prog,
1886 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1887#ifdef __DATE__
1888# ifdef __TIME__
7edfd0ef
NC
1889 Perl_sv_catpvf(aTHX_ opts_prog,
1890 ",\" Compiled at %s %s\\n\"",__DATE__,
1891 __TIME__);
6224f72b 1892# else
7edfd0ef
NC
1893 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1894 __DATE__);
6224f72b
GS
1895# endif
1896#endif
396482e1 1897 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1898 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1899 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1900#ifdef __CYGWIN__
396482e1 1901 sv_catpvs(opts_prog,
7edfd0ef 1902 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1903#endif
396482e1 1904 sv_catpvs(opts_prog,
7edfd0ef
NC
1905 "print \" \\%ENV:\\n @env\\n\" if @env;"
1906 "print \" \\@INC:\\n @INC\\n\";");
1907 }
1908 else {
1909 ++s;
1910 opts_prog = Perl_newSVpvf(aTHX_
1911 "Config::config_vars(qw%c%s%c)",
1912 0, s, 0);
1913 s += strlen(s);
1914 }
1915 av_push(PL_preambleav, opts_prog);
1916 /* don't look for script or read stdin */
1917 scriptname = BIT_BUCKET;
1918 goto reswitch;
6224f72b 1919 }
6224f72b 1920 case 'x':
3280af22 1921 PL_doextract = TRUE;
6224f72b
GS
1922 s++;
1923 if (*s)
f4c556ac 1924 cddir = s;
6224f72b
GS
1925 break;
1926 case 0:
1927 break;
1928 case '-':
1929 if (!*++s || isSPACE(*s)) {
1930 argc--,argv++;
1931 goto switch_end;
1932 }
1933 /* catch use of gnu style long options */
1934 if (strEQ(s, "version")) {
dd374669 1935 s = (char *)"v";
6224f72b
GS
1936 goto reswitch;
1937 }
1938 if (strEQ(s, "help")) {
dd374669 1939 s = (char *)"h";
6224f72b
GS
1940 goto reswitch;
1941 }
1942 s--;
1943 /* FALL THROUGH */
1944 default:
cea2e8a9 1945 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1946 }
1947 }
6224f72b 1948 switch_end:
54310121 1949
f675dbe5
CB
1950 if (
1951#ifndef SECURE_INTERNAL_GETENV
1952 !PL_tainting &&
1953#endif
cf756827 1954 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1955 {
e1ec3a88 1956 const char *popt = s;
74288ac8
GS
1957 while (isSPACE(*s))
1958 s++;
317ea90d 1959 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1960 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1961 PL_tainting = TRUE;
317ea90d
MS
1962 PL_taint_warn = FALSE;
1963 }
74288ac8 1964 else {
bd61b366 1965 char *popt_copy = NULL;
74288ac8 1966 while (s && *s) {
4ea8f8fb 1967 char *d;
74288ac8
GS
1968 while (isSPACE(*s))
1969 s++;
1970 if (*s == '-') {
1971 s++;
1972 if (isSPACE(*s))
1973 continue;
1974 }
4ea8f8fb 1975 d = s;
74288ac8
GS
1976 if (!*s)
1977 break;
e4af53b0 1978 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 1979 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1980 while (++s && *s) {
1981 if (isSPACE(*s)) {
cf756827
GS
1982 if (!popt_copy) {
1983 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1984 s = popt_copy + (s - popt);
1985 d = popt_copy + (d - popt);
1986 }
4ea8f8fb
MS
1987 *s++ = '\0';
1988 break;
1989 }
1990 }
1c4db469 1991 if (*d == 't') {
317ea90d
MS
1992 if( !PL_tainting ) {
1993 PL_taint_warn = TRUE;
1994 PL_tainting = TRUE;
1995 }
1c4db469 1996 } else {
97bd5664 1997 moreswitches(d);
1c4db469 1998 }
6224f72b 1999 }
6224f72b
GS
2000 }
2001 }
a0d0e21e 2002
20ef40cf
GA
2003#ifdef USE_SITECUSTOMIZE
2004 if (!minus_f) {
2005 if (!PL_preambleav)
2006 PL_preambleav = newAV();
2007 av_unshift(PL_preambleav, 1);
2008 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
2009 }
2010#endif
2011
317ea90d
MS
2012 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
2013 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
2014 }
2015
6224f72b
GS
2016 if (!scriptname)
2017 scriptname = argv[0];
3280af22 2018 if (PL_e_script) {
6224f72b
GS
2019 argc++,argv--;
2020 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2021 }
bd61b366 2022 else if (scriptname == NULL) {
6224f72b
GS
2023#ifdef MSDOS
2024 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2025 moreswitches("h");
6224f72b
GS
2026#endif
2027 scriptname = "-";
2028 }
2029
b7975bdd
NC
2030 /* Set $^X early so that it can be used for relocatable paths in @INC */
2031 assert (!PL_tainted);
2032 TAINT;
2033 S_set_caret_X(aTHX);
2034 TAINT_NOT;
6224f72b
GS
2035 init_perllib();
2036
a52eba0e
NC
2037 {
2038 int suidscript;
2039 const int fdscript
2040 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2041
a52eba0e 2042 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2043
64ca3a65 2044#ifndef PERL_MICRO
a52eba0e
NC
2045# if defined(SIGCHLD) || defined(SIGCLD)
2046 {
2047# ifndef SIGCHLD
2048# define SIGCHLD SIGCLD
2049# endif
2050 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2051 if (sigstate == (Sighandler_t) SIG_IGN) {
2052 if (ckWARN(WARN_SIGNAL))
2053 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2054 "Can't ignore signal CHLD, forcing to default");
2055 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2056 }
0b5b802d 2057 }
a52eba0e 2058# endif
64ca3a65 2059#endif
0b5b802d 2060
a52eba0e 2061 if (PL_doextract
bf4acbe4 2062#ifdef MACOS_TRADITIONAL
a52eba0e 2063 || gMacPerl_AlwaysExtract
bf4acbe4 2064#endif
a52eba0e 2065 ) {
faef540c
NC
2066
2067 /* This will croak if suidscript is >= 0, as -x cannot be used with
2068 setuid scripts. */
2069 forbid_setid('x', suidscript);
2070 /* Hence you can't get here if suidscript >= 0 */
2071
2072 find_beginning();
a52eba0e
NC
2073 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2074 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2075 }
f4c556ac 2076 }
6224f72b 2077
561b68a9 2078 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2079 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2080 CvUNIQUE_on(PL_compcv);
2081
dd2155a4 2082 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2083
0c4f7ff0 2084 boot_core_PerlIO();
6224f72b 2085 boot_core_UNIVERSAL();
09bef843 2086 boot_core_xsutils();
6224f72b
GS
2087
2088 if (xsinit)
acfe0abc 2089 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2090#ifndef PERL_MICRO
d0d72822 2091#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2092 init_os_extras();
6224f72b 2093#endif
64ca3a65 2094#endif
6224f72b 2095
29209bc5 2096#ifdef USE_SOCKS
1b9c9cf5
DH
2097# ifdef HAS_SOCKS5_INIT
2098 socks5_init(argv[0]);
2099# else
29209bc5 2100 SOCKSinit(argv[0]);
1b9c9cf5 2101# endif
ac27b0f5 2102#endif
29209bc5 2103
6224f72b
GS
2104 init_predump_symbols();
2105 /* init_postdump_symbols not currently designed to be called */
2106 /* more than once (ENV isn't cleared first, for example) */
2107 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2108 if (!PL_do_undump)
6224f72b
GS
2109 init_postdump_symbols(argc,argv,env);
2110
27da23d5
JH
2111 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2112 * or explicitly in some platforms.
085a54d9 2113 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2114 * look like the user wants to use UTF-8. */
a0fd4948 2115#if defined(__SYMBIAN32__)
27da23d5
JH
2116 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2117#endif
06e66572
JH
2118 if (PL_unicode) {
2119 /* Requires init_predump_symbols(). */
a05d7ebb 2120 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2121 IO* io;
2122 PerlIO* fp;
2123 SV* sv;
2124
a05d7ebb 2125 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2126 * and the default open disciplines. */
a05d7ebb
JH
2127 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2128 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2129 (fp = IoIFP(io)))
2130 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2131 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2132 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2133 (fp = IoOFP(io)))
2134 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2135 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2136 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2137 (fp = IoOFP(io)))
2138 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2139 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2140 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2141 SVt_PV)))) {
a05d7ebb
JH
2142 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2143 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2144 if (in) {
2145 if (out)
2146 sv_setpvn(sv, ":utf8\0:utf8", 11);
2147 else
2148 sv_setpvn(sv, ":utf8\0", 6);
2149 }
2150 else if (out)
2151 sv_setpvn(sv, "\0:utf8", 6);
2152 SvSETMAGIC(sv);
2153 }
b310b053
JH
2154 }
2155 }
2156
4ffa73a3
JH
2157 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2158 if (strEQ(s, "unsafe"))
2159 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2160 else if (strEQ(s, "safe"))
2161 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2162 else
2163 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2164 }
2165
6224f72b
GS
2166 init_lexer();
2167
2168 /* now parse the script */
2169
93189314 2170 SETERRNO(0,SS_NORMAL);
3280af22 2171 PL_error_count = 0;
bf4acbe4
GS
2172#ifdef MACOS_TRADITIONAL
2173 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2174 if (PL_minus_c)
2175 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2176 else {
2177 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2178 MacPerl_MPWFileName(PL_origfilename));
2179 }
2180 }
2181#else
3280af22
NIS
2182 if (yyparse() || PL_error_count) {
2183 if (PL_minus_c)
cea2e8a9 2184 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2185 else {
cea2e8a9 2186 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2187 PL_origfilename);
6224f72b
GS
2188 }
2189 }
bf4acbe4 2190#endif
57843af0 2191 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2192 PL_curstash = PL_defstash;
2193 PL_preprocess = FALSE;
2194 if (PL_e_script) {
2195 SvREFCNT_dec(PL_e_script);
a0714e2c 2196 PL_e_script = NULL;
6224f72b
GS
2197 }
2198
3280af22 2199 if (PL_do_undump)
6224f72b
GS
2200 my_unexec();
2201
57843af0
GS
2202 if (isWARN_ONCE) {
2203 SAVECOPFILE(PL_curcop);
2204 SAVECOPLINE(PL_curcop);
3280af22 2205 gv_check(PL_defstash);
57843af0 2206 }
6224f72b
GS
2207
2208 LEAVE;
2209 FREETMPS;
2210
2211#ifdef MYMALLOC
2212 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2213 dump_mstats("after compilation:");
2214#endif
2215
2216 ENTER;
3280af22 2217 PL_restartop = 0;
312caa8e 2218 return NULL;
6224f72b
GS
2219}
2220
954c1994
GS
2221/*
2222=for apidoc perl_run
2223
2224Tells a Perl interpreter to run. See L<perlembed>.
2225
2226=cut
2227*/
2228
6224f72b 2229int
0cb96387 2230perl_run(pTHXx)
6224f72b 2231{
97aff369 2232 dVAR;
6224f72b 2233 I32 oldscope;
14dd3ad8 2234 int ret = 0;
db36c5a1 2235 dJMPENV;
6224f72b 2236
9d4ba2ae
AL
2237 PERL_UNUSED_ARG(my_perl);
2238
3280af22 2239 oldscope = PL_scopestack_ix;
96e176bf
CL
2240#ifdef VMS
2241 VMSISH_HUSHED = 0;
2242#endif
6224f72b 2243
14dd3ad8 2244 JMPENV_PUSH(ret);
6224f72b
GS
2245 switch (ret) {
2246 case 1:
2247 cxstack_ix = -1; /* start context stack again */
312caa8e 2248 goto redo_body;
14dd3ad8 2249 case 0: /* normal completion */
14dd3ad8
GS
2250 redo_body:
2251 run_body(oldscope);
14dd3ad8
GS
2252 /* FALL THROUGH */
2253 case 2: /* my_exit() */
3280af22 2254 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2255 LEAVE;
2256 FREETMPS;
3280af22 2257 PL_curstash = PL_defstash;
3a1ee7e8 2258 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2259 PL_endav && !PL_minus_c)
2260 call_list(oldscope, PL_endav);
6224f72b
GS
2261#ifdef MYMALLOC
2262 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2263 dump_mstats("after execution: ");
2264#endif
37038d91 2265 ret = STATUS_EXIT;
14dd3ad8 2266 break;
6224f72b 2267 case 3:
312caa8e
CS
2268 if (PL_restartop) {
2269 POPSTACK_TO(PL_mainstack);
2270 goto redo_body;
6224f72b 2271 }
bf49b057 2272 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2273 FREETMPS;
14dd3ad8
GS
2274 ret = 1;
2275 break;
6224f72b
GS
2276 }
2277
14dd3ad8
GS
2278 JMPENV_POP;
2279 return ret;
312caa8e
CS
2280}
2281
14dd3ad8 2282
dd374669 2283STATIC void
14dd3ad8
GS
2284S_run_body(pTHX_ I32 oldscope)
2285{
97aff369 2286 dVAR;
6224f72b 2287 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2288 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2289
3280af22 2290 if (!PL_restartop) {
6224f72b 2291 DEBUG_x(dump_all());
cf2782cd 2292#ifdef DEBUGGING
ecae49c0
NC
2293 if (!DEBUG_q_TEST)
2294 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2295#endif
b900a521
JH
2296 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2297 PTR2UV(thr)));
6224f72b 2298
3280af22 2299 if (PL_minus_c) {
bf4acbe4 2300#ifdef MACOS_TRADITIONAL
e69a2255
JH
2301 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2302 (gMacPerl_ErrorFormat ? "# " : ""),
2303 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2304#else
bf49b057 2305 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2306#endif
6224f72b
GS
2307 my_exit(0);
2308 }
3280af22 2309 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2310 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2311 if (PL_initav)
2312 call_list(oldscope, PL_initav);
6224f72b
GS
2313 }
2314
2315 /* do it */
2316
3280af22 2317 if (PL_restartop) {
533c011a 2318 PL_op = PL_restartop;
3280af22 2319 PL_restartop = 0;
cea2e8a9 2320 CALLRUNOPS(aTHX);
6224f72b 2321 }
3280af22
NIS
2322 else if (PL_main_start) {
2323 CvDEPTH(PL_main_cv) = 1;
533c011a 2324 PL_op = PL_main_start;
cea2e8a9 2325 CALLRUNOPS(aTHX);
6224f72b 2326 }
f6b3007c
JH
2327 my_exit(0);
2328 /* NOTREACHED */
6224f72b
GS
2329}
2330
954c1994 2331/*
ccfc67b7
JH
2332=head1 SV Manipulation Functions
2333
954c1994
GS
2334=for apidoc p||get_sv
2335
2336Returns the SV of the specified Perl scalar. If C<create> is set and the
2337Perl variable does not exist then it will be created. If C<create> is not
2338set and the variable does not exist then NULL is returned.
2339
2340=cut
2341*/
2342
6224f72b 2343SV*
864dbfa3 2344Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2345{
2346 GV *gv;
6224f72b
GS
2347 gv = gv_fetchpv(name, create, SVt_PV);
2348 if (gv)
2349 return GvSV(gv);
a0714e2c 2350 return NULL;
6224f72b
GS
2351}
2352
954c1994 2353/*
ccfc67b7
JH
2354=head1 Array Manipulation Functions
2355
954c1994
GS
2356=for apidoc p||get_av
2357
2358Returns the AV of the specified Perl array. If C<create> is set and the
2359Perl variable does not exist then it will be created. If C<create> is not
2360set and the variable does not exist then NULL is returned.
2361
2362=cut
2363*/
2364
6224f72b 2365AV*
864dbfa3 2366Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2367{
c4420975 2368 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2369 if (create)
2370 return GvAVn(gv);
2371 if (gv)
2372 return GvAV(gv);
7d49f689 2373 return NULL;
6224f72b
GS
2374}
2375
954c1994 2376/*
ccfc67b7
JH
2377=head1 Hash Manipulation Functions
2378
954c1994
GS
2379=for apidoc p||get_hv
2380
2381Returns the HV of the specified Perl hash. If C<create> is set and the
2382Perl variable does not exist then it will be created. If C<create> is not
2383set and the variable does not exist then NULL is returned.
2384
2385=cut
2386*/
2387
6224f72b 2388HV*
864dbfa3 2389Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2390{
890ce7af 2391 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2392 if (create)
2393 return GvHVn(gv);
2394 if (gv)
2395 return GvHV(gv);
5c284bb0 2396 return NULL;
a0d0e21e
LW
2397}
2398
954c1994 2399/*
ccfc67b7
JH
2400=head1 CV Manipulation Functions
2401
954c1994
GS
2402=for apidoc p||get_cv
2403
2404Returns the CV of the specified Perl subroutine. If C<create> is set and
2405the Perl subroutine does not exist then it will be declared (which has the
2406same effect as saying C<sub name;>). If C<create> is not set and the
2407subroutine does not exist then NULL is returned.
2408
2409=cut
2410*/
2411
a0d0e21e 2412CV*
864dbfa3 2413Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2414{
c4420975 2415 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2416 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2417 /* XXX this is probably not what they think they're getting.
2418 * It has the same effect as "sub name;", i.e. just a forward
2419 * declaration! */
8ebc5c01 2420 if (create && !GvCVu(gv))
774d564b 2421 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2422 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 2423 Nullop,
a0d0e21e
LW
2424 Nullop);
2425 if (gv)
8ebc5c01 2426 return GvCVu(gv);
601f1833 2427 return NULL;
a0d0e21e
LW
2428}
2429
79072805
LW
2430/* Be sure to refetch the stack pointer after calling these routines. */
2431
954c1994 2432/*
ccfc67b7
JH
2433
2434=head1 Callback Functions
2435
954c1994
GS
2436=for apidoc p||call_argv
2437
2438Performs a callback to the specified Perl sub. See L<perlcall>.
2439
2440=cut
2441*/
2442
a0d0e21e 2443I32
8f42b153 2444Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2445
8ac85365
NIS
2446 /* See G_* flags in cop.h */
2447 /* null terminated arg list */
8990e307 2448{
97aff369 2449 dVAR;
a0d0e21e 2450 dSP;
8990e307 2451
924508f0 2452 PUSHMARK(SP);
a0d0e21e 2453 if (argv) {
8990e307 2454 while (*argv) {
a0d0e21e 2455 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2456 argv++;
2457 }
a0d0e21e 2458 PUTBACK;
8990e307 2459 }
864dbfa3 2460 return call_pv(sub_name, flags);
8990e307
LW
2461}
2462
954c1994
GS
2463/*
2464=for apidoc p||call_pv
2465
2466Performs a callback to the specified Perl sub. See L<perlcall>.
2467
2468=cut
2469*/
2470
a0d0e21e 2471I32
864dbfa3 2472Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2473 /* name of the subroutine */
2474 /* See G_* flags in cop.h */
a0d0e21e 2475{
864dbfa3 2476 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2477}
2478
954c1994
GS
2479/*
2480=for apidoc p||call_method
2481
2482Performs a callback to the specified Perl method. The blessed object must
2483be on the stack. See L<perlcall>.
2484
2485=cut
2486*/
2487
a0d0e21e 2488I32
864dbfa3 2489Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2490 /* name of the subroutine */
2491 /* See G_* flags in cop.h */
a0d0e21e 2492{
968b3946 2493 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2494}
2495
2496/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2497/*
2498=for apidoc p||call_sv
2499
2500Performs a callback to the Perl sub whose name is in the SV. See
2501L<perlcall>.
2502
2503=cut
2504*/
2505
a0d0e21e 2506I32
864dbfa3 2507Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2508 /* See G_* flags in cop.h */
a0d0e21e 2509{
27da23d5 2510 dVAR; dSP;
a0d0e21e 2511 LOGOP myop; /* fake syntax tree node */
968b3946 2512 UNOP method_op;
aa689395 2513 I32 oldmark;
13689cfe 2514 volatile I32 retval = 0;
a0d0e21e 2515 I32 oldscope;
54310121 2516 bool oldcatch = CATCH_GET;
6224f72b 2517 int ret;
c4420975 2518 OP* const oldop = PL_op;
db36c5a1 2519 dJMPENV;
1e422769 2520
a0d0e21e
LW
2521 if (flags & G_DISCARD) {
2522 ENTER;
2523 SAVETMPS;
2524 }
2525
aa689395 2526 Zero(&myop, 1, LOGOP);
54310121 2527 myop.op_next = Nullop;
f51d4af5 2528 if (!(flags & G_NOARGS))
aa689395 2529 myop.op_flags |= OPf_STACKED;
54310121
PP
2530 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2531 (flags & G_ARRAY) ? OPf_WANT_LIST :
2532 OPf_WANT_SCALAR);
462e5cf6 2533 SAVEOP();
533c011a 2534 PL_op = (OP*)&myop;
aa689395 2535
3280af22
NIS
2536 EXTEND(PL_stack_sp, 1);
2537 *++PL_stack_sp = sv;
aa689395 2538 oldmark = TOPMARK;
3280af22 2539 oldscope = PL_scopestack_ix;
a0d0e21e 2540
3280af22 2541 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2542 /* Handle first BEGIN of -d. */
3280af22 2543 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2544 /* Try harder, since this may have been a sighandler, thus
2545 * curstash may be meaningless. */
3280af22 2546 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2547 && !(flags & G_NODEBUG))
533c011a 2548 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2549
968b3946
GS
2550 if (flags & G_METHOD) {
2551 Zero(&method_op, 1, UNOP);
2552 method_op.op_next = PL_op;
2553 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2554 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2555 PL_op = (OP*)&method_op;
968b3946
GS
2556 }
2557
312caa8e 2558 if (!(flags & G_EVAL)) {
0cdb2077 2559 CATCH_SET(TRUE);
14dd3ad8 2560 call_body((OP*)&myop, FALSE);
312caa8e 2561 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2562 CATCH_SET(oldcatch);
312caa8e
CS
2563 }
2564 else {
d78bda3d 2565 myop.op_other = (OP*)&myop;
3280af22 2566 PL_markstack_ptr--;
4633a7c4
LW
2567 /* we're trying to emulate pp_entertry() here */
2568 {
c09156bb 2569 register PERL_CONTEXT *cx;
f54cb97a 2570 const I32 gimme = GIMME_V;
ac27b0f5 2571
4633a7c4
LW
2572 ENTER;
2573 SAVETMPS;
ac27b0f5 2574
1d76a5c3 2575 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2576 PUSHEVAL(cx, 0, 0);
533c011a 2577 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2578
faef0170 2579 PL_in_eval = EVAL_INEVAL;
4633a7c4 2580 if (flags & G_KEEPERR)
faef0170 2581 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2582 else
c69006e4 2583 sv_setpvn(ERRSV,"",0);
4633a7c4 2584 }
3280af22 2585 PL_markstack_ptr++;
a0d0e21e 2586
14dd3ad8 2587 JMPENV_PUSH(ret);
6224f72b
GS
2588 switch (ret) {
2589 case 0:
14dd3ad8
GS
2590 redo_body:
2591 call_body((OP*)&myop, FALSE);
312caa8e
CS
2592 retval = PL_stack_sp - (PL_stack_base + oldmark);
2593 if (!(flags & G_KEEPERR))
c69006e4 2594 sv_setpvn(ERRSV,"",0);
a0d0e21e 2595 break;
6224f72b 2596 case 1:
f86702cc 2597 STATUS_ALL_FAILURE;
a0d0e21e 2598 /* FALL THROUGH */
6224f72b 2599 case 2:
a0d0e21e 2600 /* my_exit() was called */
3280af22 2601 PL_curstash = PL_defstash;
a0d0e21e 2602 FREETMPS;
14dd3ad8 2603 JMPENV_POP;
cc3604b1 2604 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2605 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2606 my_exit_jump();
a0d0e21e 2607 /* NOTREACHED */
6224f72b 2608 case 3:
3280af22 2609 if (PL_restartop) {
533c011a 2610 PL_op = PL_restartop;
3280af22 2611 PL_restartop = 0;
312caa8e 2612 goto redo_body;
a0d0e21e 2613 }
3280af22 2614 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2615 if (flags & G_ARRAY)
2616 retval = 0;
2617 else {
2618 retval = 1;
3280af22 2619 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2620 }
312caa8e 2621 break;
a0d0e21e 2622 }
a0d0e21e 2623
3280af22 2624 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2625 SV **newsp;
2626 PMOP *newpm;
2627 I32 gimme;
c09156bb 2628 register PERL_CONTEXT *cx;
a0a2876f
LW
2629 I32 optype;
2630
2631 POPBLOCK(cx,newpm);
2632 POPEVAL(cx);
3280af22 2633 PL_curpm = newpm;
a0a2876f 2634 LEAVE;
9d4ba2ae
AL
2635 PERL_UNUSED_VAR(newsp);
2636 PERL_UNUSED_VAR(gimme);
2637 PERL_UNUSED_VAR(optype);
a0d0e21e 2638 }
14dd3ad8 2639 JMPENV_POP;
a0d0e21e 2640 }
1e422769 2641
a0d0e21e 2642 if (flags & G_DISCARD) {
3280af22 2643 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2644 retval = 0;
2645 FREETMPS;
2646 LEAVE;
2647 }
533c011a 2648 PL_op = oldop;
a0d0e21e
LW
2649 return retval;
2650}
2651
312caa8e 2652STATIC void
dd374669 2653S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2654{
97aff369 2655 dVAR;
312caa8e
CS
2656 if (PL_op == myop) {
2657 if (is_eval)
f807eda9 2658 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2659 else
f807eda9 2660 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2661 }
2662 if (PL_op)
cea2e8a9 2663 CALLRUNOPS(aTHX);
312caa8e
CS
2664}
2665
6e72f9df 2666/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2667
954c1994
GS
2668/*
2669=for apidoc p||eval_sv
2670
2671Tells Perl to C<eval> the string in the SV.
2672
2673=cut
2674*/
2675
a0d0e21e 2676I32
864dbfa3 2677Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2678
8ac85365 2679 /* See G_* flags in cop.h */
a0d0e21e 2680{
97aff369 2681 dVAR;
924508f0 2682 dSP;
a0d0e21e 2683 UNOP myop; /* fake syntax tree node */
8fa7f367 2684 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2685 volatile I32 retval = 0;
6224f72b 2686 int ret;
c4420975 2687 OP* const oldop = PL_op;
db36c5a1 2688 dJMPENV;
84902520 2689
4633a7c4
LW
2690 if (flags & G_DISCARD) {
2691 ENTER;
2692 SAVETMPS;
2693 }
2694
462e5cf6 2695 SAVEOP();
533c011a
NIS
2696 PL_op = (OP*)&myop;
2697 Zero(PL_op, 1, UNOP);
3280af22
NIS
2698 EXTEND(PL_stack_sp, 1);
2699 *++PL_stack_sp = sv;
79072805 2700
4633a7c4
LW
2701 if (!(flags & G_NOARGS))
2702 myop.op_flags = OPf_STACKED;
79072805 2703 myop.op_next = Nullop;
6e72f9df 2704 myop.op_type = OP_ENTEREVAL;
54310121
PP
2705 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2706 (flags & G_ARRAY) ? OPf_WANT_LIST :
2707 OPf_WANT_SCALAR);
6e72f9df
PP
2708 if (flags & G_KEEPERR)
2709 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2710
dedbcade
DM
2711 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2712 * before a PUSHEVAL, which corrupts the stack after a croak */
2713 TAINT_PROPER("eval_sv()");
2714
14dd3ad8 2715 JMPENV_PUSH(ret);
6224f72b
GS
2716 switch (ret) {
2717 case 0:
14dd3ad8
GS
2718 redo_body:
2719 call_body((OP*)&myop,TRUE);
312caa8e
CS
2720 retval = PL_stack_sp - (PL_stack_base + oldmark);
2721 if (!(flags & G_KEEPERR))
c69006e4 2722 sv_setpvn(ERRSV,"",0);
4633a7c4 2723 break;
6224f72b 2724 case 1:
f86702cc 2725 STATUS_ALL_FAILURE;
4633a7c4 2726 /* FALL THROUGH */
6224f72b 2727 case 2:
4633a7c4 2728 /* my_exit() was called */
3280af22 2729 PL_curstash = PL_defstash;
4633a7c4 2730 FREETMPS;
14dd3ad8 2731 JMPENV_POP;
cc3604b1 2732 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2733 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2734 my_exit_jump();
4633a7c4 2735 /* NOTREACHED */
6224f72b 2736 case 3:
3280af22 2737 if (PL_restartop) {
533c011a 2738 PL_op = PL_restartop;
3280af22 2739 PL_restartop = 0;
312caa8e 2740 goto redo_body;
4633a7c4 2741 }
3280af22 2742 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2743 if (flags & G_ARRAY)
2744 retval = 0;
2745 else {
2746 retval = 1;
3280af22 2747 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2748 }
312caa8e 2749 break;
4633a7c4
LW
2750 }
2751
14dd3ad8 2752 JMPENV_POP;
4633a7c4 2753 if (flags & G_DISCARD) {
3280af22 2754 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2755 retval = 0;
2756 FREETMPS;
2757 LEAVE;
2758 }
533c011a 2759 PL_op = oldop;
4633a7c4
LW
2760 return retval;
2761}
2762
954c1994
GS
2763/*
2764=for apidoc p||eval_pv
2765
2766Tells Perl to C<eval> the given string and return an SV* result.
2767
2768=cut
2769*/
2770
137443ea 2771SV*
864dbfa3 2772Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2773{
97aff369 2774 dVAR;
137443ea
PP
2775 dSP;
2776 SV* sv = newSVpv(p, 0);
2777
864dbfa3 2778 eval_sv(sv, G_SCALAR);
137443ea
PP
2779 SvREFCNT_dec(sv);
2780
2781 SPAGAIN;
2782 sv = POPs;
2783 PUTBACK;
2784
2d8e6c8d 2785 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2786 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2787 }
137443ea
PP
2788
2789 return sv;
2790}
2791
4633a7c4
LW
2792/* Require a module. */
2793
954c1994 2794/*
ccfc67b7
JH
2795=head1 Embedding Functions
2796
954c1994
GS
2797=for apidoc p||require_pv
2798
7d3fb230
BS
2799Tells Perl to C<require> the file named by the string argument. It is
2800analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2801implemented that way; consider using load_module instead.
954c1994 2802
7d3fb230 2803=cut */
954c1994 2804
4633a7c4 2805void
864dbfa3 2806Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2807{
97aff369 2808 dVAR;
d3acc0f7 2809 dSP;
97aff369 2810 SV* sv;
e788e7d3 2811 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2812 PUTBACK;
be41e5d9
NC
2813 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2814 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2815 SPAGAIN;
2816 POPSTACK;
79072805
LW
2817}
2818
79072805 2819void
e1ec3a88 2820Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2821{
71315bf2 2822 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2823
c4420975 2824 if (gv)
14befaf4 2825 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2826}
2827
76e3520e 2828STATIC void
e1ec3a88 2829S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2830{
ab821d7f 2831 /* This message really ought to be max 23 lines.
75c72d73 2832 * Removed -h because the user already knows that option. Others? */
fb73857a 2833
27da23d5 2834 static const char * const usage_msg[] = {
aefc56c5
SF
2835"-0[octal] specify record separator (\\0, if no argument)",
2836"-A[mod][=pattern] activate all/given assertions",
2837"-a autosplit mode with -n or -p (splits $_ into @F)",
2838"-C[number/list] enables the listed Unicode features",
2839"-c check syntax only (runs BEGIN and CHECK blocks)",
2840"-d[:debugger] run program under debugger",
2841"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2842"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2843"-E program like -e, but enables all optional features",
aefc56c5 2844"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2845"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2846"-i[extension] edit <> files in place (makes backup if extension supplied)",
2847"-Idirectory specify @INC/#include directory (several -I's allowed)",
2848"-l[octal] enable line ending processing, specifies line terminator",
2849"-[mM][-]module execute \"use/no module...\" before executing program",
2850"-n assume \"while (<>) { ... }\" loop around program",
2851"-p assume loop like -n but print line also, like sed",
2852"-P run program through C preprocessor before compilation",
2853"-s enable rudimentary parsing for switches after programfile",
2854"-S look for programfile using PATH environment variable",
2855"-t enable tainting warnings",
2856"-T enable tainting checks",
2857"-u dump core after parsing program",
2858"-U allow unsafe operations",
2859"-v print version, subversion (includes VERY IMPORTANT perl info)",
2860"-V[:variable] print configuration summary (or a single Config.pm variable)",
2861"-w enable many useful warnings (RECOMMENDED)",
2862"-W enable all warnings",
2863"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2864"-X disable all warnings",
fb73857a
PP
2865"\n",
2866NULL
2867};
27da23d5 2868 const char * const *p = usage_msg;
fb73857a 2869
b0e47665
GS
2870 PerlIO_printf(PerlIO_stdout(),
2871 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2872 name);
fb73857a 2873 while (*p)
b0e47665 2874 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2875}
2876
b4ab917c
DM
2877/* convert a string of -D options (or digits) into an int.
2878 * sets *s to point to the char after the options */
2879
2880#ifdef DEBUGGING
2881int
e1ec3a88 2882Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2883{
27da23d5 2884 static const char * const usage_msgd[] = {
e6e64d9b
JC
2885 " Debugging flag values: (see also -d)",
2886 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2887 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2888 " l Context (loop) stack processing",
2889 " t Trace execution",
2890 " o Method and overloading resolution",
2891 " c String/numeric conversions",
2892 " P Print profiling info, preprocessor command for -P, source file input state",
2893 " m Memory allocation",
2894 " f Format processing",
2895 " r Regular expression parsing and execution",
2896 " x Syntax tree dump",
3679267a 2897 " u Tainting checks",
e6e64d9b
JC
2898 " H Hash dump -- usurps values()",
2899 " X Scratchpad allocation",
2900 " D Cleaning up",
2901 " S Thread synchronization",
2902 " T Tokenising",
2903 " R Include reference counts of dumped variables (eg when using -Ds)",
2904 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2905 " v Verbose: use in conjunction with other flags",
2906 " C Copy On Write",
2907 " A Consistency checks on internal structures",
3679267a 2908 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2909 NULL
2910 };
b4ab917c
DM
2911 int i = 0;
2912 if (isALPHA(**s)) {
2913 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2914 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2915
2916 for (; isALNUM(**s); (*s)++) {
c4420975 2917 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2918 if (d)
2919 i |= 1 << (d - debopts);
2920 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2921 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2922 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2923 }
2924 }
e6e64d9b 2925 else if (isDIGIT(**s)) {
b4ab917c
DM
2926 i = atoi(*s);
2927 for (; isALNUM(**s); (*s)++) ;
2928 }
ddcf8bc1 2929 else if (givehelp) {
06e869a4 2930 const char *const *p = usage_msgd;
e6e64d9b
JC
2931 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2932 }
b4ab917c
DM
2933# ifdef EBCDIC
2934 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2935 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2936 "-Dp not implemented on this platform\n");
2937# endif
2938 return i;
2939}
2940#endif
2941
79072805
LW
2942/* This routine handles any switches that can be given during run */
2943
2944char *
97bd5664 2945Perl_moreswitches(pTHX_ char *s)
79072805 2946{
27da23d5 2947 dVAR;
84c133a0 2948 UV rschar;
79072805
LW
2949
2950 switch (*s) {
2951 case '0':
a863c7d1 2952 {
f2095865 2953 I32 flags = 0;
a3b680e6 2954 STRLEN numlen;
f2095865
JH
2955
2956 SvREFCNT_dec(PL_rs);
2957 if (s[1] == 'x' && s[2]) {
a3b680e6 2958 const char *e = s+=2;
f2095865
JH
2959 U8 *tmps;
2960
a3b680e6
AL
2961 while (*e)
2962 e++;
f2095865
JH
2963 numlen = e - s;
2964 flags = PERL_SCAN_SILENT_ILLDIGIT;
2965 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2966 if (s + numlen < e) {
2967 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2968 numlen = 0;
2969 s--;
2970 }
396482e1 2971 PL_rs = newSVpvs("");
c5661c80 2972 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2973 tmps = (U8*)SvPVX(PL_rs);
2974 uvchr_to_utf8(tmps, rschar);
2975 SvCUR_set(PL_rs, UNISKIP(rschar));
2976 SvUTF8_on(PL_rs);
2977 }
2978 else {
2979 numlen = 4;
2980 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2981 if (rschar & ~((U8)~0))
2982 PL_rs = &PL_sv_undef;
2983 else if (!rschar && numlen >= 2)
396482e1 2984 PL_rs = newSVpvs("");
f2095865
JH
2985 else {
2986 char ch = (char)rschar;
2987 PL_rs = newSVpvn(&ch, 1);
2988 }
2989 }
800633c3 2990 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 2991 return s + numlen;
a863c7d1 2992 }
46487f74 2993 case 'C':
a05d7ebb 2994 s++;
dd374669 2995 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 2996 return s;
2304df62 2997 case 'F':
3280af22 2998 PL_minus_F = TRUE;
ebce5377
RGS
2999 PL_splitstr = ++s;
3000 while (*s && !isSPACE(*s)) ++s;
3001 *s = '\0';
3002 PL_splitstr = savepv(PL_splitstr);
2304df62 3003 return s;
79072805 3004 case 'a':
3280af22 3005 PL_minus_a = TRUE;
79072805
LW
3006 s++;
3007 return s;
3008 case 'c':
3280af22 3009 PL_minus_c = TRUE;
79072805
LW
3010 s++;
3011 return s;
3012 case 'd':
97bd5664 3013 forbid_setid('d', -1);
4633a7c4 3014 s++;
2cbb2ee1
RGS
3015
3016 /* -dt indicates to the debugger that threads will be used */
3017 if (*s == 't' && !isALNUM(s[1])) {
3018 ++s;
3019 my_setenv("PERL5DB_THREADED", "1");
3020 }
3021
70c94a19
RR
3022 /* The following permits -d:Mod to accepts arguments following an =
3023 in the fashion that -MSome::Mod does. */
3024 if (*s == ':' || *s == '=') {
06b5626a 3025 const char *start;
396482e1 3026 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3027 start = ++s;
3028 /* We now allow -d:Module=Foo,Bar */
3029 while(isALNUM(*s) || *s==':') ++s;
3030 if (*s != '=')
3031 sv_catpv(sv, start);
3032 else {
3033 sv_catpvn(sv, start, s-start);
0c5a913d 3034 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
70c94a19 3035 }
4633a7c4 3036 s += strlen(s);
184f32ec 3037 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3038 }
ed094faf 3039 if (!PL_perldb) {
3280af22 3040 PL_perldb = PERLDB_ALL;
a0d0e21e 3041 init_debugger();
ed094faf 3042 }
79072805
LW
3043 return s;
3044 case 'D':
0453d815 3045 {
79072805 3046#ifdef DEBUGGING
97bd5664 3047 forbid_setid('D', -1);
b4ab917c 3048 s++;
dd374669 3049 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3050#else /* !DEBUGGING */
0453d815 3051 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3052 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3053 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3054 for (s++; isALNUM(*s); s++) ;
79072805 3055#endif
79072805 3056 return s;
0453d815 3057 }
4633a7c4 3058 case 'h':
ac27b0f5 3059 usage(PL_origargv[0]);
7ca617d0 3060 my_exit(0);
79072805 3061 case 'i':
43c5f42d 3062 Safefree(PL_inplace);
c030f24b
GH
3063#if defined(__CYGWIN__) /* do backup extension automagically */
3064 if (*(s+1) == '\0') {
c86a4f2e 3065 PL_inplace = savepvs(".bak");
c030f24b
GH
3066 return s+1;
3067 }
3068#endif /* __CYGWIN__ */
3280af22 3069 PL_inplace = savepv(s+1);
a6e20a40
AL
3070 for (s = PL_inplace; *s && !isSPACE(*s); s++)
3071 ;
7b8d334a 3072 if (*s) {
fb73857a 3073 *s++ = '\0';
7b8d334a
GS
3074 if (*s == '-') /* Additional switches on #! line. */
3075 s++;
3076 }
fb73857a 3077 return s;
4e49a025 3078 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3079 forbid_setid('I', -1);
fb73857a
PP
3080 ++s;
3081 while (*s && isSPACE(*s))
3082 ++s;
3083 if (*s) {
774d564b 3084 char *e, *p;
0df16ed7
GS
3085 p = s;
3086 /* ignore trailing spaces (possibly followed by other switches) */
3087 do {
3088 for (e = p; *e && !isSPACE(*e); e++) ;
3089 p = e;
3090 while (isSPACE(*p))
3091 p++;
3092 } while (*p && *p != '-');
3093 e = savepvn(s, e-s);
88fe16b2 3094 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3095 Safefree(e);
3096 s = p;
3097 if (*s == '-')
3098 s++;
79072805
LW
3099 }
3100 else
a67e862a 3101 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3102 return s;
79072805 3103 case 'l':
3280af22 3104 PL_minus_l = TRUE;
79072805 3105 s++;
7889fe52
NIS
3106 if (PL_ors_sv) {
3107 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3108 PL_ors_sv = NULL;
7889fe52 3109 }
79072805 3110 if (isDIGIT(*s)) {
53305cf1 3111 I32 flags = 0;
a3b680e6 3112 STRLEN numlen;
396482e1 3113 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3114 numlen = 3 + (*s == '0');
3115 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3116 s += numlen;
3117 }
3118 else {
8bfdd7d9 3119 if (RsPARA(PL_rs)) {
396482e1 3120 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3121 }
3122 else {
8bfdd7d9 3123 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3124 }
79072805
LW
3125 }
3126 return s;
06492da6 3127 case 'A':
97bd5664 3128 forbid_setid('A', -1);
930366bd
RGS
3129 if (!PL_preambleav)
3130 PL_preambleav = newAV();
aefc56c5
SF
3131 s++;
3132 {
44f8325f 3133 char * const start = s;
396482e1 3134 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3135 while(isALNUM(*s) || *s == ':') ++s;
3136 if (s != start) {
396482e1 3137 sv_catpvs(sv, "::");
aefc56c5
SF
3138 sv_catpvn(sv, start, s-start);
3139 }
3140 if (*s == '=') {
0c5a913d 3141 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3142 s+=strlen(s);
3143 }
3144 else if (*s != '\0') {
551405c4 3145 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3146 }
06492da6 3147 av_push(PL_preambleav, sv);
aefc56c5 3148 return s;
06492da6 3149 }
1a30305b 3150 case 'M':
97bd5664 3151 forbid_setid('M', -1); /* XXX ? */
1a30305b
PP
3152 /* FALL THROUGH */
3153 case 'm':
97bd5664 3154 forbid_setid('m', -1); /* XXX ? */
1a30305b 3155 if (*++s) {
a5f75d66 3156 char *start;
11343788 3157 SV *sv;
e1ec3a88 3158 const char *use = "use ";
a5f75d66 3159 /* -M-foo == 'no foo' */
d0043bd1
NC
3160 /* Leading space on " no " is deliberate, to make both
3161 possibilities the same length. */
3162 if (*s == '-') { use = " no "; ++s; }
3163 sv = newSVpvn(use,4);
a5f75d66 3164 start = s;
1a30305b 3165 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3166 while(isALNUM(*s) || *s==':') ++s;
3167 if (*s != '=') {
11343788 3168 sv_catpv(sv, start);
c07a80fd
PP
3169 if (*(start-1) == 'm') {
3170 if (*s != '\0')
cea2e8a9 3171 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3172 sv_catpvs( sv, " ()");
c07a80fd
PP
3173 }
3174 } else {
6df41af2 3175 if (s == start)
be98fb35
GS
3176 Perl_croak(aTHX_ "Module name required with -%c option",
3177 s[-1]);
11343788 3178 sv_catpvn(sv, start, s-start);
396482e1
GA
3179 sv_catpvs(sv, " split(/,/,q");
3180 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3181 sv_catpv(sv, ++s);
396482e1 3182 sv_catpvs(sv, "\0)");
c07a80fd 3183 }
1a30305b 3184 s += strlen(s);
5c831c24 3185 if (!PL_preambleav)
3280af22
NIS
3186 PL_preambleav = newAV();
3187 av_push(PL_preambleav, sv);
1a30305b
PP
3188 }
3189 else
9e81e6a1 3190 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3191 return s;
79072805 3192 case 'n':
3280af22 3193 PL_minus_n = TRUE;
79072805
LW
3194 s++;
3195 return s;
3196 case 'p':
3280af22 3197 PL_minus_p = TRUE;
79072805
LW
3198 s++;
3199 return s;
3200 case 's':
97bd5664 3201 forbid_setid('s', -1);
3280af22 3202 PL_doswitches = TRUE;
79072805
LW
3203 s++;
3204 return s;
6537fe72
MS
3205 case 't':
3206 if (!PL_tainting)
22f7c9c9 3207 TOO_LATE_FOR('t');
6537fe72
MS
3208 s++;
3209 return s;
463ee0b2 3210 case 'T':
3280af22 3211 if (!PL_tainting)
22f7c9c9 3212 TOO_LATE_FOR('T');
463ee0b2
LW
3213 s++;
3214 return s;
79072805 3215 case 'u':
bf4acbe4
GS
3216#ifdef MACOS_TRADITIONAL
3217 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3218#endif
3280af22 3219 PL_do_undump = TRUE;
79072805
LW
3220 s++;
3221 return s;
3222 case 'U':
3280af22 3223 PL_unsafe = TRUE;
79072805
LW
3224 s++;
3225 return s;
3226 case 'v':
d7aa5382 3227 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3228 upg_version(PL_patchlevel);
8e9464f1 3229#if !defined(DGUX)
b0e47665 3230 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3231 Perl_form(aTHX_ "\nThis is perl, %"SVf
3232#ifdef PERL_PATCHNUM
3233 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3234#endif
3235 " built for %s",
d7aa5382
JP
3236 vstringify(PL_patchlevel),
3237 ARCHNAME));
8e9464f1
JH
3238#else /* DGUX */
3239/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3240 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3241 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3242 vstringify(PL_patchlevel)));
8e9464f1
JH
3243 PerlIO_printf(PerlIO_stdout(),
3244 Perl_form(aTHX_ " built under %s at %s %s\n",
3245 OSNAME, __DATE__, __TIME__));
3246 PerlIO_printf(PerlIO_stdout(),
3247 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3248 OSVERS));
8e9464f1
JH
3249#endif /* !DGUX */
3250
fb73857a
PP
3251#if defined(LOCAL_PATCH_COUNT)
3252 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3253 PerlIO_printf(PerlIO_stdout(),
3254 "\n(with %d registered patch%s, "
3255 "see perl -V for more detail)",
3256 (int)LOCAL_PATCH_COUNT,
3257 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3258#endif
1a30305b 3259
b0e47665 3260 PerlIO_printf(PerlIO_stdout(),
3246d7a3 3261 "\n\nCopyright 1987-2006, Larry Wall\n");
eae9c151
JH
3262#ifdef MACOS_TRADITIONAL
3263 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3264 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3265 "maintained by Chris Nandor\n");
eae9c151 3266#endif
79072805 3267#ifdef MSDOS
b0e47665
GS
3268 PerlIO_printf(PerlIO_stdout(),
3269 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3270#endif
3271#ifdef DJGPP
b0e47665
GS
3272 PerlIO_printf(PerlIO_stdout(),
3273 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3274 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3275#endif
79072805 3276#ifdef OS2
b0e47665
GS
3277 PerlIO_printf(PerlIO_stdout(),
3278 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3279 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3280#endif
79072805 3281#ifdef atarist
b0e47665
GS
3282 PerlIO_printf(PerlIO_stdout(),
3283 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3284#endif
a3f9223b 3285#ifdef __BEOS__
b0e47665
GS
3286 PerlIO_printf(PerlIO_stdout(),
3287 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3288#endif
1d84e8df 3289#ifdef MPE
b0e47665 3290 PerlIO_printf(PerlIO_stdout(),
e583a879 3291 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3292#endif
9d116dd7 3293#ifdef OEMVS
b0e47665
GS
3294 PerlIO_printf(PerlIO_stdout(),
3295 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3296#endif
495c5fdc 3297#ifdef __VOS__
b0e47665 3298 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3299 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3300#endif
092bebab 3301#ifdef __OPEN_VM
b0e47665
GS
3302 PerlIO_printf(PerlIO_stdout(),
3303 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3304#endif
a1a0e61e 3305#ifdef POSIX_BC
b0e47665
GS
3306 PerlIO_printf(PerlIO_stdout(),
3307 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3308#endif
61ae2fbf 3309#ifdef __MINT__
b0e47665
GS
3310 PerlIO_printf(PerlIO_stdout(),
3311 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3312#endif
f83d2536 3313#ifdef EPOC
b0e47665 3314 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3315 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3316#endif
e1caacb4 3317#ifdef UNDER_CE
b475b3e6
JH
3318 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3319 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3320 wce_hitreturn();
3321#endif
a0fd4948 3322#ifdef __SYMBIAN32__
27da23d5
JH
3323 PerlIO_printf(PerlIO_stdout(),
3324 "Symbian port by Nokia, 2004-2005\n");
3325#endif
baed7233
DL
3326#ifdef BINARY_BUILD_NOTICE
3327 BINARY_BUILD_NOTICE;
3328#endif
b0e47665
GS
3329 PerlIO_printf(PerlIO_stdout(),
3330 "\n\
79072805 3331Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3332GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3333Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3334this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3335Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3336 my_exit(0);
79072805 3337 case 'w':
599cee73 3338 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3339 PL_dowarn |= G_WARN_ON;
599cee73
PM
3340 s++;
3341 return s;
3342 case 'W':
ac27b0f5 3343 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3344 if (!specialWARN(PL_compiling.cop_warnings))
3345 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3346 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3347 s++;
3348 return s;
3349 case 'X':
ac27b0f5 3350 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3351 if (!specialWARN(PL_compiling.cop_warnings))
3352 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3353 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3354 s++;
3355 return s;
a0d0e21e 3356 case '*':
79072805
LW
3357 case ' ':
3358 if (s[1] == '-') /* Additional switches on #! line. */
3359 return s+2;
3360 break;
a0d0e21e 3361 case '-':
79072805 3362 case 0:
51882d45 3363#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3364 case '\r':
3365#endif
79072805
LW
3366 case '\n':
3367 case '\t':
3368 break;
aa689395
PP
3369#ifdef ALTERNATE_SHEBANG
3370 case 'S': /* OS/2 needs -S on "extproc" line. */
3371 break;
3372#endif
a0d0e21e 3373 case 'P':
3280af22 3374 if (PL_preprocess)
a0d0e21e
LW
3375 return s+1;
3376 /* FALL THROUGH */
79072805 3377 default:
cea2e8a9 3378 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3379 }
bd61b366 3380 return NULL;
79072805
LW
3381}
3382
3383/* compliments of Tom Christiansen */
3384
3385/* unexec() can be found in the Gnu emacs distribution */
ee580363 3386/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3387
3388void
864dbfa3 3389Perl_my_unexec(pTHX)
79072805
LW
3390{
3391#ifdef UNEXEC
46fc3d4c
PP
3392 SV* prog;
3393 SV* file;
ee580363 3394 int status = 1;
79072805
LW
3395 extern int etext;
3396
ee580363 3397 prog = newSVpv(BIN_EXP, 0);
396482e1 3398 sv_catpvs(prog, "/perl");
6b88bc9c 3399 file = newSVpv(PL_origfilename, 0);
396482e1 3400 sv_catpvs(file, ".perldump");
79072805 3401
ee580363
GS
3402 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3403 /* unexec prints msg to stderr in case of failure */
6ad3d225 3404 PerlProc_exit(status);
79072805 3405#else
a5f75d66
AD
3406# ifdef VMS
3407# include <lib$routines.h>
3408 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3409# elif defined(WIN32) || defined(__CYGWIN__)
3410 Perl_croak(aTHX_ "dump is not supported");
aa689395 3411# else
79072805 3412 ABORT(); /* for use with undump */
aa689395 3413# endif
a5f75d66 3414#endif
79072805
LW
3415}
3416
cb68f92d
GS
3417/* initialize curinterp */
3418STATIC void
cea2e8a9 3419S_init_interp(pTHX)
cb68f92d 3420{
97aff369 3421 dVAR;
acfe0abc
GS
3422#ifdef MULTIPLICITY
3423# define PERLVAR(var,type)
3424# define PERLVARA(var,n,type)
3425# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3426# define PERLVARI(var,type,init) aTHX->var = init;
3427# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3428# else
acfe0abc
GS
3429# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3430# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3431# endif
acfe0abc 3432# include "intrpvar.h"
b7f7fff6 3433# include "thrdvar.h"
acfe0abc
GS
3434# undef PERLVAR
3435# undef PERLVARA
3436# undef PERLVARI
3437# undef PERLVARIC
3438#else
3439# define PERLVAR(var,type)
3440# define PERLVARA(var,n,type)
3441# define PERLVARI(var,type,init) PL_##var = init;
3442# define PERLVARIC(var,type,init) PL_##var = init;
3443# include "intrpvar.h"
b7f7fff6 3444# include "thrdvar.h"
acfe0abc
GS
3445# undef PERLVAR
3446# undef PERLVARA
3447# undef PERLVARI
3448# undef PERLVARIC
cb68f92d
GS
3449#endif
3450
cb68f92d
GS
3451}
3452
76e3520e 3453STATIC void
cea2e8a9 3454S_init_main_stash(pTHX)
79072805 3455{
97aff369 3456 dVAR;
463ee0b2 3457 GV *gv;
6e72f9df 3458
3280af22 3459 PL_curstash = PL_defstash = newHV();
23579a14
NC
3460 /* We know that the string "main" will be in the global shared string
3461 table, so it's a small saving to use it rather than allocate another
3462 8 bytes. */
18916d0d 3463 PL_curstname = newSVpvs_share("main");
fafc274c 3464 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3465 /* If we hadn't caused another reference to "main" to be in the shared
3466 string table above, then it would be worth reordering these two,
3467 because otherwise all we do is delete "main" from it as a consequence
3468 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3469 SvREFCNT_dec(GvHV(gv));
23579a14 3470 hv_name_set(PL_defstash, "main", 4, 0);
3280af22 3471 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3472 SvREADONLY_on(gv);
fafc274c
NC
3473 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3474 SVt_PVAV)));
5fd80ba5 3475 SvREFCNT_inc(PL_incgv); /* Don't allow it to be freed */
3280af22 3476 GvMULTI_on(PL_incgv);
fafc274c 3477 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3478 GvMULTI_on(PL_hintgv);
fafc274c 3479 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5fd80ba5 3480 SvREFCNT_inc(PL_defgv);
fafc274c 3481 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5fd80ba5 3482 SvREFCNT_inc(PL_errgv);
3280af22 3483 GvMULTI_on(PL_errgv);
fafc274c 3484 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22 3485 GvMULTI_on(PL_replgv);
cea2e8a9 3486 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3487#ifdef PERL_DONT_CREATE_GVSV
3488 gv_SVadd(PL_errgv);
3489#endif
38a03e6e
MB
3490 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3491 sv_setpvn(ERRSV, "", 0);