This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Bleadperl's Win32::Win32 is more recent than the current CPAN release
[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
20fac488 140#ifndef NO_MATHOMS
d324d6de 141/* This reference ensures that the mathoms are linked with perl */
6e497a67
AL
142extern void Perl_mathoms(void);
143void Perl_mathoms_ref(void);
144void Perl_mathoms_ref(void) {
20fac488
GA
145 Perl_mathoms();
146}
147#endif
148
e6827a76 149static void
daa7d858 150S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 151{
27da23d5 152 dVAR;
e6827a76
NC
153 if (!PL_curinterp) {
154 PERL_SET_INTERP(my_perl);
3db8f154 155#if defined(USE_ITHREADS)
e6827a76
NC
156 INIT_THREADS;
157 ALLOC_THREAD_KEY;
158 PERL_SET_THX(my_perl);
159 OP_REFCNT_INIT;
160 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 161# endif
016af4f1
DM
162#ifdef PERL_IMPLICIT_CONTEXT
163 MUTEX_INIT(&PL_my_ctx_mutex);
164# endif
e6827a76
NC
165 }
166 else {
167 PERL_SET_THX(my_perl);
168 }
169}
06d86050 170
32e30700
GS
171#ifdef PERL_IMPLICIT_SYS
172PerlInterpreter *
7766f137
GS
173perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
174 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
175 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
176 struct IPerlDir* ipD, struct IPerlSock* ipS,
177 struct IPerlProc* ipP)
178{
179 PerlInterpreter *my_perl;
9f653bb5 180 /* Newx() needs interpreter, so call malloc() instead */
32e30700 181 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 182 S_init_tls_and_interp(my_perl);
32e30700
GS
183 Zero(my_perl, 1, PerlInterpreter);
184 PL_Mem = ipM;
7766f137
GS
185 PL_MemShared = ipMS;
186 PL_MemParse = ipMP;
32e30700
GS
187 PL_Env = ipE;
188 PL_StdIO = ipStd;
189 PL_LIO = ipLIO;
190 PL_Dir = ipD;
191 PL_Sock = ipS;
192 PL_Proc = ipP;
7766f137 193
32e30700
GS
194 return my_perl;
195}
196#else
954c1994
GS
197
198/*
ccfc67b7
JH
199=head1 Embedding Functions
200
954c1994
GS
201=for apidoc perl_alloc
202
203Allocates a new Perl interpreter. See L<perlembed>.
204
205=cut
206*/
207
93a17b20 208PerlInterpreter *
cea2e8a9 209perl_alloc(void)
79072805 210{
cea2e8a9 211 PerlInterpreter *my_perl;
79072805 212
9f653bb5 213 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 214 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 215
e6827a76 216 S_init_tls_and_interp(my_perl);
07409e01 217 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
79072805 218}
32e30700 219#endif /* PERL_IMPLICIT_SYS */
79072805 220
954c1994
GS
221/*
222=for apidoc perl_construct
223
224Initializes a new Perl interpreter. See L<perlembed>.
225
226=cut
227*/
228
79072805 229void
0cb96387 230perl_construct(pTHXx)
79072805 231{
27da23d5 232 dVAR;
9d4ba2ae 233 PERL_UNUSED_ARG(my_perl);
8990e307 234#ifdef MULTIPLICITY
54aff467 235 init_interp();
ac27b0f5 236 PL_perl_destruct_level = 1;
54aff467
GS
237#else
238 if (PL_perl_destruct_level > 0)
239 init_interp();
240#endif
33f46ff6 241 /* Init the real globals (and main thread)? */
3280af22 242 if (!PL_linestr) {
2aea9f8a
GS
243 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
244
3280af22
NIS
245 PL_linestr = NEWSV(65,79);
246 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 247
3280af22 248 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP
249 /* set read-only and try to insure than we wont see REFCNT==0
250 very often */
251
3280af22
NIS
252 SvREADONLY_on(&PL_sv_undef);
253 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 254
3280af22 255 sv_setpv(&PL_sv_no,PL_No);
0309f36e
NC
256 /* value lookup in void context - happens to have the side effect
257 of caching the numeric forms. */
258 SvIV(&PL_sv_no);
3280af22
NIS
259 SvNV(&PL_sv_no);
260 SvREADONLY_on(&PL_sv_no);
261 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 262
3280af22 263 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 264 SvIV(&PL_sv_yes);
3280af22
NIS
265 SvNV(&PL_sv_yes);
266 SvREADONLY_on(&PL_sv_yes);
267 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7996736c
MHM
268
269 SvREADONLY_on(&PL_sv_placeholder);
270 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 271 }
79072805 272
8aad04aa 273 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 274#ifdef PERL_USES_PL_PIDSTATUS
3280af22 275 PL_pidstatus = newHV();
ca0c25f6 276#endif
79072805
LW
277 }
278
396482e1 279 PL_rs = newSVpvs("\n");
dc92893f 280
cea2e8a9 281 init_stacks();
79072805 282
748a9306 283 init_ids();
3280af22 284 PL_lex_state = LEX_NOTPARSING;
a5f75d66 285
312caa8e 286 JMPENV_BOOTSTRAP;
f86702cc
PP
287 STATUS_ALL_SUCCESS;
288
0672f40e 289 init_i18nl10n(1);
36477c24 290 SET_NUMERIC_STANDARD();
0b5b802d 291
ab821d7f 292#if defined(LOCAL_PATCH_COUNT)
3280af22 293 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
294#endif
295
52853b95
GS
296#ifdef HAVE_INTERP_INTERN
297 sys_intern_init();
298#endif
299
3a1ee7e8 300 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 301
3280af22
NIS
302 PL_fdpid = newAV(); /* for remembering popen pids by fd */
303 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 304 PL_errors = newSVpvs("");
48c6b404 305 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
306 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
307 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 308#ifdef USE_ITHREADS
13137afc
AB
309 PL_regex_padav = newAV();
310 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
311 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 312#endif
e5dd39fc 313#ifdef USE_REENTRANT_API
59bd0823 314 Perl_reentrant_init(aTHX);
e5dd39fc 315#endif
3d47000e
AB
316
317 /* Note that strtab is a rather special HV. Assumptions are made
318 about not iterating on it, and not adding tie magic to it.
319 It is properly deallocated in perl_destruct() */
320 PL_strtab = newHV();
321
3d47000e
AB
322 HvSHAREKEYS_off(PL_strtab); /* mandatory */
323 hv_ksplit(PL_strtab, 512);
324
0631ea03
AB
325#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
326 _dyld_lookup_and_bind
327 ("__environ", (unsigned long *) &environ_pointer, NULL);
328#endif /* environ */
329
2f42fcb0
JH
330#ifndef PERL_MICRO
331# ifdef USE_ENVIRON_ARRAY
0631ea03 332 PL_origenviron = environ;
2f42fcb0 333# endif
0631ea03
AB
334#endif
335
5311654c 336 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 337 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
338 * BeOS has those, but returns the wrong value.
339 * The HZ if not originally defined has been by now
340 * been defined as CLK_TCK, if available. */
dbc1d986 341#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
342 PL_clocktick = sysconf(_SC_CLK_TCK);
343 if (PL_clocktick <= 0)
344#endif
345 PL_clocktick = HZ;
346
081fc587
AB
347 PL_stashcache = newHV();
348
e6830b13
NC
349 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
350 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 351
27da23d5
JH
352#ifdef HAS_MMAP
353 if (!PL_mmap_page_size) {
354#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
355 {
356 SETERRNO(0, SS_NORMAL);
357# ifdef _SC_PAGESIZE
358 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
359# else
360 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
361# endif
362 if ((long) PL_mmap_page_size < 0) {
363 if (errno) {
44f8325f 364 SV * const error = ERRSV;
27da23d5 365 (void) SvUPGRADE(error, SVt_PV);
0510663f 366 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
367 }
368 else
369 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
370 }
371 }
372#else
373# ifdef HAS_GETPAGESIZE
374 PL_mmap_page_size = getpagesize();
375# else
376# if defined(I_SYS_PARAM) && defined(PAGESIZE)
377 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
378# endif
379# endif
380#endif
381 if (PL_mmap_page_size <= 0)
382 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
383 (IV) PL_mmap_page_size);
384 }
385#endif /* HAS_MMAP */
386
387#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
388 PL_timesbase.tms_utime = 0;
389 PL_timesbase.tms_stime = 0;
390 PL_timesbase.tms_cutime = 0;
391 PL_timesbase.tms_cstime = 0;
392#endif
393
8990e307 394 ENTER;
79072805
LW
395}
396
954c1994 397/*
62375a60
NIS
398=for apidoc nothreadhook
399
400Stub that provides thread hook for perl_destruct when there are
401no threads.
402
403=cut
404*/
405
406int
4e9e3734 407Perl_nothreadhook(pTHX)
62375a60
NIS
408{
409 return 0;
410}
411
41e4abd8
NC
412#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
413void
414Perl_dump_sv_child(pTHX_ SV *sv)
415{
416 ssize_t got;
bf357333
NC
417 const int sock = PL_dumper_fd;
418 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
419 union control_un control;
420 struct msghdr msg;
808ad2d0 421 struct iovec vec[2];
bf357333 422 struct cmsghdr *cmptr;
808ad2d0
NC
423 int returned_errno;
424 unsigned char buffer[256];
41e4abd8 425
bf357333 426 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
427 return;
428
429 PerlIO_flush(Perl_debug_log);
430
bf357333
NC
431 /* All these shenanigans are to pass a file descriptor over to our child for
432 it to dump out to. We can't let it hold open the file descriptor when it
433 forks, as the file descriptor it will dump to can turn out to be one end
434 of pipe that some other process will wait on for EOF. (So as it would
435 be open, the wait would be forever. */
436
437 msg.msg_control = control.control;
438 msg.msg_controllen = sizeof(control.control);
439 /* We're a connected socket so we don't need a destination */
440 msg.msg_name = NULL;
441 msg.msg_namelen = 0;
442 msg.msg_iov = vec;
808ad2d0 443 msg.msg_iovlen = 1;
bf357333
NC
444
445 cmptr = CMSG_FIRSTHDR(&msg);
446 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
447 cmptr->cmsg_level = SOL_SOCKET;
448 cmptr->cmsg_type = SCM_RIGHTS;
449 *((int *)CMSG_DATA(cmptr)) = 1;
450
451 vec[0].iov_base = (void*)&sv;
452 vec[0].iov_len = sizeof(sv);
453 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
454
455 if(got < 0) {
bf357333 456 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
457 abort();
458 }
bf357333
NC
459 if(got < sizeof(sv)) {
460 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
461 abort();
462 }
463
808ad2d0
NC
464 /* Return protocol is
465 int: errno value
466 unsigned char: length of location string (0 for empty)
467 unsigned char*: string (not terminated)
468 */
469 vec[0].iov_base = (void*)&returned_errno;
470 vec[0].iov_len = sizeof(returned_errno);
471 vec[1].iov_base = buffer;
472 vec[1].iov_len = 1;
473
474 got = readv(sock, vec, 2);
41e4abd8
NC
475
476 if(got < 0) {
477 perror("Debug leaking scalars parent read failed");
808ad2d0 478 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
479 abort();
480 }
808ad2d0 481 if(got < sizeof(returned_errno) + 1) {
41e4abd8 482 perror("Debug leaking scalars parent short read");
808ad2d0 483 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
484 abort();
485 }
486
808ad2d0
NC
487 if (*buffer) {
488 got = read(sock, buffer + 1, *buffer);
489 if(got < 0) {
490 perror("Debug leaking scalars parent read 2 failed");
491 PerlIO_flush(PerlIO_stderr());
492 abort();
493 }
494
495 if(got < *buffer) {
496 perror("Debug leaking scalars parent short read 2");
497 PerlIO_flush(PerlIO_stderr());
498 abort();
499 }
500 }
501
502 if (returned_errno || *buffer) {
503 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
504 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
505 returned_errno, strerror(returned_errno));
41e4abd8
NC
506 }
507}
508#endif
509
62375a60 510/*
954c1994
GS
511=for apidoc perl_destruct
512
513Shuts down a Perl interpreter. See L<perlembed>.
514
515=cut
516*/
517
31d77e54 518int
0cb96387 519perl_destruct(pTHXx)
79072805 520{
27da23d5 521 dVAR;
7c474504 522 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 523 HV *hv;
2aa47728 524#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
525 pid_t child;
526#endif
8990e307 527
9d4ba2ae
AL
528 PERL_UNUSED_ARG(my_perl);
529
7766f137
GS
530 /* wait for all pseudo-forked children to finish */
531 PERL_WAIT_FOR_CHILDREN;
532
3280af22 533 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
534#ifdef DEBUGGING
535 {
9d4ba2ae
AL
536 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
537 if (s) {
e1ec3a88 538 const int i = atoi(s);
5f05dabc
PP
539 if (destruct_level < i)
540 destruct_level = i;
541 }
4633a7c4
LW
542 }
543#endif
544
27da23d5 545 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
546 dJMPENV;
547 int x = 0;
548
549 JMPENV_PUSH(x);
1b6737cc 550 PERL_UNUSED_VAR(x);
f3faeb53
AB
551 if (PL_endav && !PL_minus_c)
552 call_list(PL_scopestack_ix, PL_endav);
553 JMPENV_POP;
26f423df 554 }
f3faeb53 555 LEAVE;
a0d0e21e
LW
556 FREETMPS;
557
e00b64d4 558 /* Need to flush since END blocks can produce output */
f13a2bc0 559 my_fflush_all();
e00b64d4 560
62375a60
NIS
561 if (CALL_FPTR(PL_threadhook)(aTHX)) {
562 /* Threads hook has vetoed further cleanup */
37038d91 563 return STATUS_EXIT;
62375a60
NIS
564 }
565
2aa47728
NC
566#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
567 if (destruct_level != 0) {
568 /* Fork here to create a child. Our child's job is to preserve the
569 state of scalars prior to destruction, so that we can instruct it
570 to dump any scalars that we later find have leaked.
571 There's no subtlety in this code - it assumes POSIX, and it doesn't
572 fail gracefully */
573 int fd[2];
574
575 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
576 perror("Debug leaking scalars socketpair failed");
577 abort();
578 }
579
580 child = fork();
581 if(child == -1) {
582 perror("Debug leaking scalars fork failed");
583 abort();
584 }
585 if (!child) {
586 /* We are the child */
3125a5a4
NC
587 const int sock = fd[1];
588 const int debug_fd = PerlIO_fileno(Perl_debug_log);
589 int f;
808ad2d0
NC
590 const char *where;
591 /* Our success message is an integer 0, and a char 0 */
592 static const char success[sizeof(int) + 1];
3125a5a4 593
2aa47728 594 close(fd[0]);
2aa47728 595
3125a5a4
NC
596 /* We need to close all other file descriptors otherwise we end up
597 with interesting hangs, where the parent closes its end of a
598 pipe, and sits waiting for (another) child to terminate. Only
599 that child never terminates, because it never gets EOF, because
bf357333
NC
600 we also have the far end of the pipe open. We even need to
601 close the debugging fd, because sometimes it happens to be one
602 end of a pipe, and a process is waiting on the other end for
603 EOF. Normally it would be closed at some point earlier in
604 destruction, but if we happen to cause the pipe to remain open,
605 EOF never occurs, and we get an infinite hang. Hence all the
606 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
607
608 f = sysconf(_SC_OPEN_MAX);
609 if(f < 0) {
808ad2d0
NC
610 where = "sysconf failed";
611 goto abort;
3125a5a4
NC
612 }
613 while (f--) {
614 if (f == sock)
615 continue;
3125a5a4
NC
616 close(f);
617 }
618
2aa47728
NC
619 while (1) {
620 SV *target;
bf357333
NC
621 union control_un control;
622 struct msghdr msg;
623 struct iovec vec[1];
624 struct cmsghdr *cmptr;
625 ssize_t got;
626 int got_fd;
627
628 msg.msg_control = control.control;
629 msg.msg_controllen = sizeof(control.control);
630 /* We're a connected socket so we don't need a source */
631 msg.msg_name = NULL;
632 msg.msg_namelen = 0;
633 msg.msg_iov = vec;
634 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
635
636 vec[0].iov_base = (void*)&target;
637 vec[0].iov_len = sizeof(target);
638
639 got = recvmsg(sock, &msg, 0);
2aa47728
NC
640
641 if(got == 0)
642 break;
643 if(got < 0) {
808ad2d0
NC
644 where = "recv failed";
645 goto abort;
2aa47728
NC
646 }
647 if(got < sizeof(target)) {
808ad2d0
NC
648 where = "short recv";
649 goto abort;
2aa47728 650 }
bf357333 651
808ad2d0
NC
652 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
653 where = "no cmsg";
654 goto abort;
655 }
656 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
657 where = "wrong cmsg_len";
658 goto abort;
659 }
660 if(cmptr->cmsg_level != SOL_SOCKET) {
661 where = "wrong cmsg_level";
662 goto abort;
663 }
664 if(cmptr->cmsg_type != SCM_RIGHTS) {
665 where = "wrong cmsg_type";
666 goto abort;
667 }
bf357333
NC
668
669 got_fd = *(int*)CMSG_DATA(cmptr);
670 /* For our last little bit of trickery, put the file descriptor
671 back into Perl_debug_log, as if we never actually closed it
672 */
808ad2d0
NC
673 if(got_fd != debug_fd) {
674 if (dup2(got_fd, debug_fd) == -1) {
675 where = "dup2";
676 goto abort;
677 }
678 }
2aa47728 679 sv_dump(target);
bf357333 680
2aa47728
NC
681 PerlIO_flush(Perl_debug_log);
682
808ad2d0 683 got = write(sock, &success, sizeof(success));
2aa47728
NC
684
685 if(got < 0) {
808ad2d0
NC
686 where = "write failed";
687 goto abort;
2aa47728 688 }
808ad2d0
NC
689 if(got < sizeof(success)) {
690 where = "short write";
691 goto abort;
2aa47728
NC
692 }
693 }
694 _exit(0);
808ad2d0
NC
695 abort:
696 {
697 int send_errno = errno;
698 unsigned char length = (unsigned char) strlen(where);
699 struct iovec failure[3] = {
700 {(void*)&send_errno, sizeof(send_errno)},
701 {&length, 1},
702 {(void*)where, length}
703 };
704 int got = writev(sock, failure, 3);
705 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
706 in the parent if we try to read from the socketpair after the
707 child has exited, even if there was data to read.
708 So sleep a bit to give the parent a fighting chance of
709 reading the data. */
710 sleep(2);
711 _exit((got == -1) ? errno : 0);
712 }
bf357333 713 /* End of child. */
2aa47728 714 }
41e4abd8 715 PL_dumper_fd = fd[0];
2aa47728
NC
716 close(fd[1]);
717 }
718#endif
719
ff0cee69
PP
720 /* We must account for everything. */
721
722 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
723 /* Do this now, because destroying ops can cause new SVs to be generated
724 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
725 PL_curcop to point to a valid op from which the filename structure
726 member is copied. */
727 PL_curcop = &PL_compiling;
3280af22 728 if (PL_main_root) {
4e380990
DM
729 /* ensure comppad/curpad to refer to main's pad */
730 if (CvPADLIST(PL_main_cv)) {
731 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
732 }
3280af22
NIS
733 op_free(PL_main_root);
734 PL_main_root = Nullop;
a0d0e21e 735 }
3280af22
NIS
736 PL_main_start = Nullop;
737 SvREFCNT_dec(PL_main_cv);
738 PL_main_cv = Nullcv;
24d3c518 739 PL_dirty = TRUE;
ff0cee69 740
13621cfb
NIS
741 /* Tell PerlIO we are about to tear things apart in case
742 we have layers which are using resources that should
743 be cleaned up now.
744 */
745
746 PerlIO_destruct(aTHX);
747
3280af22 748 if (PL_sv_objcount) {
a0d0e21e
LW
749 /*
750 * Try to destruct global references. We do this first so that the
751 * destructors and destructees still exist. Some sv's might remain.
752 * Non-referenced objects are on their own.
753 */
a0d0e21e 754 sv_clean_objs();
bf9cdc68 755 PL_sv_objcount = 0;
a0de6cf5
DM
756 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
757 PL_defoutgv = Nullgv; /* may have been freed */
8990e307
LW
758 }
759
5cd24f17 760 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
761 SvREFCNT_dec(PL_warnhook);
762 PL_warnhook = Nullsv;
763 SvREFCNT_dec(PL_diehook);
764 PL_diehook = Nullsv;
5cd24f17 765
4b556e6c 766 /* call exit list functions */
3280af22 767 while (PL_exitlistlen-- > 0)
acfe0abc 768 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 769
3280af22 770 Safefree(PL_exitlist);
4b556e6c 771
1c4916e5
CB
772 PL_exitlist = NULL;
773 PL_exitlistlen = 0;
774
a0d0e21e 775 if (destruct_level == 0){
8990e307 776
a0d0e21e 777 DEBUG_P(debprofdump());
ac27b0f5 778
56a2bab7
NIS
779#if defined(PERLIO_LAYERS)
780 /* No more IO - including error messages ! */
781 PerlIO_cleanup(aTHX);
782#endif
783
a0d0e21e 784 /* The exit() function will do everything that needs doing. */
37038d91 785 return STATUS_EXIT;
a0d0e21e 786 }
5dd60ef7 787
551a8b83 788 /* jettison our possibly duplicated environment */
4b647fb0
DM
789 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
790 * so we certainly shouldn't free it here
791 */
2f42fcb0 792#ifndef PERL_MICRO
4b647fb0 793#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 794 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
795#ifdef USE_ITHREADS
796 /* only main thread can free environ[0] contents */
797 && PL_curinterp == aTHX
798#endif
799 )
800 {
551a8b83
JH
801 I32 i;
802
803 for (i = 0; environ[i]; i++)
4b420006 804 safesysfree(environ[i]);
0631ea03 805
4b420006
JH
806 /* Must use safesysfree() when working with environ. */
807 safesysfree(environ);
551a8b83
JH
808
809 environ = PL_origenviron;
810 }
811#endif
2f42fcb0 812#endif /* !PERL_MICRO */
551a8b83 813
804ffa60
DM
814 /* reset so print() ends up where we expect */
815 setdefout(Nullgv);
816
5f8cb046
DM
817#ifdef USE_ITHREADS
818 /* the syntax tree is shared between clones
819 * so op_free(PL_main_root) only ReREFCNT_dec's
820 * REGEXPs in the parent interpreter
821 * we need to manually ReREFCNT_dec for the clones
822 */
823 {
824 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 825 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
826
827 while (i) {
c4420975 828 SV * const resv = ary[--i];
35061a7e
DM
829
830 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 831 /* this is PL_reg_curpm, already freed
35061a7e
DM
832 * flag is set in regexec.c:S_regtry
833 */
834 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 835 }
1cc8b4c5
AB
836 else if(SvREPADTMP(resv)) {
837 SvREPADTMP_off(resv);
838 }
a560f29b
NC
839 else if(SvIOKp(resv)) {
840 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
841 ReREFCNT_dec(re);
842 }
843 }
844 }
845 SvREFCNT_dec(PL_regex_padav);
7d49f689 846 PL_regex_padav = NULL;
5f8cb046
DM
847 PL_regex_pad = NULL;
848#endif
849
081fc587
AB
850 SvREFCNT_dec((SV*) PL_stashcache);
851 PL_stashcache = NULL;
852
5f05dabc
PP
853 /* loosen bonds of global variables */
854
3280af22
NIS
855 if(PL_rsfp) {
856 (void)PerlIO_close(PL_rsfp);
857 PL_rsfp = Nullfp;
8ebc5c01
PP
858 }
859
860 /* Filters for program text */
3280af22 861 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 862 PL_rsfp_filters = NULL;
8ebc5c01
PP
863
864 /* switches */
3280af22
NIS
865 PL_preprocess = FALSE;
866 PL_minus_n = FALSE;
867 PL_minus_p = FALSE;
868 PL_minus_l = FALSE;
869 PL_minus_a = FALSE;
870 PL_minus_F = FALSE;
871 PL_doswitches = FALSE;
599cee73 872 PL_dowarn = G_WARN_OFF;
3280af22
NIS
873 PL_doextract = FALSE;
874 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
875 PL_unsafe = FALSE;
876
877 Safefree(PL_inplace);
878 PL_inplace = Nullch;
a7cb1f99 879 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
880
881 if (PL_e_script) {
882 SvREFCNT_dec(PL_e_script);
883 PL_e_script = Nullsv;
8ebc5c01
PP
884 }
885
bf9cdc68
RG
886 PL_perldb = 0;
887
8ebc5c01
PP
888 /* magical thingies */
889
7889fe52
NIS
890 SvREFCNT_dec(PL_ofs_sv); /* $, */
891 PL_ofs_sv = Nullsv;
5f05dabc 892
7889fe52
NIS
893 SvREFCNT_dec(PL_ors_sv); /* $\ */
894 PL_ors_sv = Nullsv;
8ebc5c01 895
3280af22
NIS
896 SvREFCNT_dec(PL_rs); /* $/ */
897 PL_rs = Nullsv;
dc92893f 898
d33b2eba
GS
899 PL_multiline = 0; /* $* */
900 Safefree(PL_osname); /* $^O */
901 PL_osname = Nullch;
5f05dabc 902
3280af22
NIS
903 SvREFCNT_dec(PL_statname);
904 PL_statname = Nullsv;
905 PL_statgv = Nullgv;
5f05dabc 906
8ebc5c01
PP
907 /* defgv, aka *_ should be taken care of elsewhere */
908
8ebc5c01 909 /* clean up after study() */
3280af22
NIS
910 SvREFCNT_dec(PL_lastscream);
911 PL_lastscream = Nullsv;
912 Safefree(PL_screamfirst);
913 PL_screamfirst = 0;
914 Safefree(PL_screamnext);
915 PL_screamnext = 0;
8ebc5c01 916
7d5ea4e7
GS
917 /* float buffer */
918 Safefree(PL_efloatbuf);
919 PL_efloatbuf = Nullch;
920 PL_efloatsize = 0;
921
8ebc5c01 922 /* startup and shutdown function lists */
3280af22 923 SvREFCNT_dec(PL_beginav);
5a837c8f 924 SvREFCNT_dec(PL_beginav_save);
3280af22 925 SvREFCNT_dec(PL_endav);
7d30b5c4 926 SvREFCNT_dec(PL_checkav);
ece599bd 927 SvREFCNT_dec(PL_checkav_save);
3280af22 928 SvREFCNT_dec(PL_initav);
7d49f689
NC
929 PL_beginav = NULL;
930 PL_beginav_save = NULL;
931 PL_endav = NULL;
932 PL_checkav = NULL;
933 PL_checkav_save = NULL;
934 PL_initav = NULL;
5618dfe8 935
8ebc5c01 936 /* shortcuts just get cleared */
3280af22 937 PL_envgv = Nullgv;
3280af22
NIS
938 PL_incgv = Nullgv;
939 PL_hintgv = Nullgv;
940 PL_errgv = Nullgv;
941 PL_argvgv = Nullgv;
942 PL_argvoutgv = Nullgv;
943 PL_stdingv = Nullgv;
bf49b057 944 PL_stderrgv = Nullgv;
3280af22
NIS
945 PL_last_in_gv = Nullgv;
946 PL_replgv = Nullgv;
bf9cdc68
RG
947 PL_DBgv = Nullgv;
948 PL_DBline = Nullgv;
949 PL_DBsub = Nullgv;
950 PL_DBsingle = Nullsv;
951 PL_DBtrace = Nullsv;
952 PL_DBsignal = Nullsv;
953 PL_DBassertion = Nullsv;
954 PL_DBcv = Nullcv;
7d49f689 955 PL_dbargs = NULL;
5c284bb0 956 PL_debstash = NULL;
8ebc5c01 957
7a1c5554 958 SvREFCNT_dec(PL_argvout_stack);
7d49f689 959 PL_argvout_stack = NULL;
8ebc5c01 960
5c831c24 961 SvREFCNT_dec(PL_modglobal);
5c284bb0 962 PL_modglobal = NULL;
5c831c24 963 SvREFCNT_dec(PL_preambleav);
7d49f689 964 PL_preambleav = NULL;
5c831c24
GS
965 SvREFCNT_dec(PL_subname);
966 PL_subname = Nullsv;
967 SvREFCNT_dec(PL_linestr);
968 PL_linestr = Nullsv;
ca0c25f6 969#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 970 SvREFCNT_dec(PL_pidstatus);
5c284bb0 971 PL_pidstatus = NULL;
ca0c25f6 972#endif
5c831c24
GS
973 SvREFCNT_dec(PL_toptarget);
974 PL_toptarget = Nullsv;
975 SvREFCNT_dec(PL_bodytarget);
976 PL_bodytarget = Nullsv;
977 PL_formtarget = Nullsv;
978
d33b2eba 979 /* free locale stuff */
b9582b6a 980#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
981 Safefree(PL_collation_name);
982 PL_collation_name = Nullch;
b9582b6a 983#endif
d33b2eba 984
b9582b6a 985#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
986 Safefree(PL_numeric_name);
987 PL_numeric_name = Nullch;
a453c169 988 SvREFCNT_dec(PL_numeric_radix_sv);
bf9cdc68 989 PL_numeric_radix_sv = Nullsv;
b9582b6a 990#endif
d33b2eba 991
5c831c24
GS
992 /* clear utf8 character classes */
993 SvREFCNT_dec(PL_utf8_alnum);
994 SvREFCNT_dec(PL_utf8_alnumc);
995 SvREFCNT_dec(PL_utf8_ascii);
996 SvREFCNT_dec(PL_utf8_alpha);
997 SvREFCNT_dec(PL_utf8_space);
998 SvREFCNT_dec(PL_utf8_cntrl);
999 SvREFCNT_dec(PL_utf8_graph);
1000 SvREFCNT_dec(PL_utf8_digit);
1001 SvREFCNT_dec(PL_utf8_upper);
1002 SvREFCNT_dec(PL_utf8_lower);
1003 SvREFCNT_dec(PL_utf8_print);
1004 SvREFCNT_dec(PL_utf8_punct);
1005 SvREFCNT_dec(PL_utf8_xdigit);
1006 SvREFCNT_dec(PL_utf8_mark);
1007 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1008 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1009 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1010 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1011 SvREFCNT_dec(PL_utf8_idstart);
1012 SvREFCNT_dec(PL_utf8_idcont);
5c831c24
GS
1013 PL_utf8_alnum = Nullsv;
1014 PL_utf8_alnumc = Nullsv;
1015 PL_utf8_ascii = Nullsv;
1016 PL_utf8_alpha = Nullsv;
1017 PL_utf8_space = Nullsv;
1018 PL_utf8_cntrl = Nullsv;
1019 PL_utf8_graph = Nullsv;
1020 PL_utf8_digit = Nullsv;
1021 PL_utf8_upper = Nullsv;
1022 PL_utf8_lower = Nullsv;
1023 PL_utf8_print = Nullsv;
1024 PL_utf8_punct = Nullsv;
1025 PL_utf8_xdigit = Nullsv;
1026 PL_utf8_mark = Nullsv;
1027 PL_utf8_toupper = Nullsv;
1028 PL_utf8_totitle = Nullsv;
1029 PL_utf8_tolower = Nullsv;
b4e400f9 1030 PL_utf8_tofold = Nullsv;
82686b01
JH
1031 PL_utf8_idstart = Nullsv;
1032 PL_utf8_idcont = Nullsv;
5c831c24 1033
971a9dd3
GS
1034 if (!specialWARN(PL_compiling.cop_warnings))
1035 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 1036 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
1037 if (!specialCopIO(PL_compiling.cop_io))
1038 SvREFCNT_dec(PL_compiling.cop_io);
1039 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS
1040 CopFILE_free(&PL_compiling);
1041 CopSTASH_free(&PL_compiling);
5c831c24 1042
a0d0e21e 1043 /* Prepare to destruct main symbol table. */
5f05dabc 1044
3280af22
NIS
1045 hv = PL_defstash;
1046 PL_defstash = 0;
a0d0e21e 1047 SvREFCNT_dec(hv);
5c831c24
GS
1048 SvREFCNT_dec(PL_curstname);
1049 PL_curstname = Nullsv;
a0d0e21e 1050
5a844595
GS
1051 /* clear queued errors */
1052 SvREFCNT_dec(PL_errors);
1053 PL_errors = Nullsv;
1054
a0d0e21e 1055 FREETMPS;
0453d815 1056 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1057 if (PL_scopestack_ix != 0)
9014280d 1058 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1059 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1060 (long)PL_scopestack_ix);
1061 if (PL_savestack_ix != 0)
9014280d 1062 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1063 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1064 (long)PL_savestack_ix);
1065 if (PL_tmps_floor != -1)
9014280d 1066 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1067 (long)PL_tmps_floor + 1);
a0d0e21e 1068 if (cxstack_ix != -1)
9014280d 1069 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1070 (long)cxstack_ix + 1);
a0d0e21e 1071 }
8990e307
LW
1072
1073 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1074 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1075 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1076
1077 /* the 2 is for PL_fdpid and PL_strtab */
1078 while (PL_sv_count > 2 && sv_clean_all())
1079 ;
1080
d33b2eba
GS
1081 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1082 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1083 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1084 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1085
d4777f27
GS
1086 AvREAL_off(PL_fdpid); /* no surviving entries */
1087 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1088 PL_fdpid = NULL;
d33b2eba 1089
6c644e78
GS
1090#ifdef HAVE_INTERP_INTERN
1091 sys_intern_clear();
1092#endif
1093
6e72f9df
PP
1094 /* Destruct the global string table. */
1095 {
1096 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1097 * so that sv_free() won't fail on them.
80459961
NC
1098 * Now that the global string table is using a single hunk of memory
1099 * for both HE and HEK, we either need to explicitly unshare it the
1100 * correct way, or actually free things here.
6e72f9df 1101 */
80459961
NC
1102 I32 riter = 0;
1103 const I32 max = HvMAX(PL_strtab);
c4420975 1104 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1105 HE *hent = array[0];
1106
6e72f9df 1107 for (;;) {
0453d815 1108 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1109 HE * const next = HeNEXT(hent);
9014280d 1110 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f
AL
1111 "Unbalanced string table refcount: (%ld) for \"%s\"",
1112 (long)(HeVAL(hent) - Nullsv), HeKEY(hent));
80459961
NC
1113 Safefree(hent);
1114 hent = next;
6e72f9df
PP
1115 }
1116 if (!hent) {
1117 if (++riter > max)
1118 break;
1119 hent = array[riter];
1120 }
1121 }
80459961
NC
1122
1123 Safefree(array);
1124 HvARRAY(PL_strtab) = 0;
1125 HvTOTALKEYS(PL_strtab) = 0;
1126 HvFILL(PL_strtab) = 0;
6e72f9df 1127 }
3280af22 1128 SvREFCNT_dec(PL_strtab);
6e72f9df 1129
e652bb2f 1130#ifdef USE_ITHREADS
c21d1a0f 1131 /* free the pointer tables used for cloning */
a0739874 1132 ptr_table_free(PL_ptr_table);
bf9cdc68 1133 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1134#endif
a0739874 1135
d33b2eba
GS
1136 /* free special SVs */
1137
1138 SvREFCNT(&PL_sv_yes) = 0;
1139 sv_clear(&PL_sv_yes);
1140 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1141 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1142
1143 SvREFCNT(&PL_sv_no) = 0;
1144 sv_clear(&PL_sv_no);
1145 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1146 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1147
9f375a43
DM
1148 {
1149 int i;
1150 for (i=0; i<=2; i++) {
1151 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1152 sv_clear(PERL_DEBUG_PAD(i));
1153 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1154 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1155 }
1156 }
1157
0453d815 1158 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1159 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1160
eba0f806
DM
1161#ifdef DEBUG_LEAKING_SCALARS
1162 if (PL_sv_count != 0) {
1163 SV* sva;
1164 SV* sv;
1165 register SV* svend;
1166
1167 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1168 svend = &sva[SvREFCNT(sva)];
1169 for (sv = sva + 1; sv < svend; ++sv) {
1170 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1171 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1172 " flags=0x%"UVxf
fd0854ff
DM
1173 " refcnt=%"UVuf pTHX__FORMAT "\n"
1174 "\tallocated at %s:%d %s %s%s\n",
1175 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1176 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1177 sv->sv_debug_line,
1178 sv->sv_debug_inpad ? "for" : "by",
1179 sv->sv_debug_optype ?
1180 PL_op_name[sv->sv_debug_optype]: "(none)",
1181 sv->sv_debug_cloned ? " (cloned)" : ""
1182 );
2aa47728 1183#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1184 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1185#endif
eba0f806
DM
1186 }
1187 }
1188 }
1189 }
2aa47728
NC
1190#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1191 {
1192 int status;
1193 fd_set rset;
1194 /* Wait for up to 4 seconds for child to terminate.
1195 This seems to be the least effort way of timing out on reaping
1196 its exit status. */
1197 struct timeval waitfor = {4, 0};
41e4abd8 1198 int sock = PL_dumper_fd;
2aa47728
NC
1199
1200 shutdown(sock, 1);
1201 FD_ZERO(&rset);
1202 FD_SET(sock, &rset);
1203 select(sock + 1, &rset, NULL, NULL, &waitfor);
1204 waitpid(child, &status, WNOHANG);
1205 close(sock);
1206 }
1207#endif
eba0f806 1208#endif
bf9cdc68 1209 PL_sv_count = 0;
eba0f806
DM
1210
1211
56a2bab7 1212#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1213 /* No more IO - including error messages ! */
1214 PerlIO_cleanup(aTHX);
1215#endif
1216
9f4bd222
NIS
1217 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1218 as currently layers use it rather than Nullsv as a marker
1219 for no arg - and will try and SvREFCNT_dec it.
1220 */
1221 SvREFCNT(&PL_sv_undef) = 0;
1222 SvREADONLY_off(&PL_sv_undef);
1223
3280af22 1224 Safefree(PL_origfilename);
bf9cdc68 1225 PL_origfilename = Nullch;
3280af22 1226 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1227 PL_reg_start_tmp = (char**)NULL;
1228 PL_reg_start_tmpl = 0;
43c5f42d 1229 Safefree(PL_reg_curpm);
82ba1be6 1230 Safefree(PL_reg_poscache);
dd28f7bb 1231 free_tied_hv_pool();
3280af22 1232 Safefree(PL_op_mask);
cf36064f 1233 Safefree(PL_psig_ptr);
bf9cdc68 1234 PL_psig_ptr = (SV**)NULL;
cf36064f 1235 Safefree(PL_psig_name);
bf9cdc68 1236 PL_psig_name = (SV**)NULL;
2c2666fc 1237 Safefree(PL_bitcount);
bf9cdc68 1238 PL_bitcount = Nullch;
ce08f86c 1239 Safefree(PL_psig_pend);
bf9cdc68
RG
1240 PL_psig_pend = (int*)NULL;
1241 PL_formfeed = Nullsv;
6e72f9df 1242 nuke_stacks();
bf9cdc68
RG
1243 PL_tainting = FALSE;
1244 PL_taint_warn = FALSE;
3280af22 1245 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1246 PL_debug = 0;
ac27b0f5 1247
a0d0e21e 1248 DEBUG_P(debprofdump());
d33b2eba 1249
e5dd39fc 1250#ifdef USE_REENTRANT_API
10bc17b6 1251 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1252#endif
1253
612f20c3
GS
1254 sv_free_arenas();
1255
fc36a67e
PP
1256 /* As the absolutely last thing, free the non-arena SV for mess() */
1257
3280af22 1258 if (PL_mess_sv) {
f350b448
NC
1259 /* we know that type == SVt_PVMG */
1260
9c63abab 1261 /* it could have accumulated taint magic */
f350b448
NC
1262 MAGIC* mg;
1263 MAGIC* moremagic;
1264 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1265 moremagic = mg->mg_moremagic;
1266 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1267 && mg->mg_len >= 0)
1268 Safefree(mg->mg_ptr);
1269 Safefree(mg);
9c63abab 1270 }
f350b448 1271
fc36a67e 1272 /* we know that type >= SVt_PV */
8bd4d4c5 1273 SvPV_free(PL_mess_sv);
3280af22
NIS
1274 Safefree(SvANY(PL_mess_sv));
1275 Safefree(PL_mess_sv);
1276 PL_mess_sv = Nullsv;
fc36a67e 1277 }
37038d91 1278 return STATUS_EXIT;
79072805
LW
1279}
1280
954c1994
GS
1281/*
1282=for apidoc perl_free
1283
1284Releases a Perl interpreter. See L<perlembed>.
1285
1286=cut
1287*/
1288
79072805 1289void
0cb96387 1290perl_free(pTHXx)
79072805 1291{
acfe0abc 1292#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1293# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS
1294# ifdef NETWARE
1295 void *host = nw_internal_host;
1296# else
1297 void *host = w32_internal_host;
1298# endif
ce3e5b80 1299 PerlMem_free(aTHXx);
acfe0abc 1300# ifdef NETWARE
011f1a1a 1301 nw_delete_internal_host(host);
acfe0abc
GS
1302# else
1303 win32_delete_internal_host(host);
1304# endif
1c0ca838
GS
1305# else
1306 PerlMem_free(aTHXx);
1307# endif
acfe0abc
GS
1308#else
1309 PerlMem_free(aTHXx);
76e3520e 1310#endif
79072805
LW
1311}
1312
aebd1ac7
GA
1313#if defined(USE_5005THREADS) || defined(USE_ITHREADS)
1314/* provide destructors to clean up the thread key when libperl is unloaded */
1315#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1316
110d3f98 1317#if defined(__hpux) && __ux_version > 1020 && !defined(__GNUC__)
aebd1ac7
GA
1318#pragma fini "perl_fini"
1319#endif
1320
0dbb1585
AL
1321static void
1322#if defined(__GNUC__)
1323__attribute__((destructor))
aebd1ac7 1324#endif
de009b76 1325perl_fini(void)
aebd1ac7 1326{
27da23d5 1327 dVAR;
aebd1ac7
GA
1328 if (PL_curinterp)
1329 FREE_THREAD_KEY;
1330}
1331
1332#endif /* WIN32 */
1333#endif /* THREADS */
1334
4b556e6c 1335void
864dbfa3 1336Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1337{
97aff369 1338 dVAR;
3280af22
NIS
1339 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1340 PL_exitlist[PL_exitlistlen].fn = fn;
1341 PL_exitlist[PL_exitlistlen].ptr = ptr;
1342 ++PL_exitlistlen;
4b556e6c
JD
1343}
1344
56cf6df8
RGS
1345#ifdef HAS_PROCSELFEXE
1346/* This is a function so that we don't hold on to MAXPATHLEN
1347 bytes of stack longer than necessary
1348 */
1349STATIC void
e1ec3a88 1350S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1351{
1352 char buf[MAXPATHLEN];
1353 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1354
1355 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1356 includes a spurious NUL which will cause $^X to fail in system
1357 or backticks (this will prevent extensions from being built and
1358 many tests from working). readlink is not meant to add a NUL.
1359 Normal readlink works fine.
1360 */
1361 if (len > 0 && buf[len-1] == '\0') {
1362 len--;
1363 }
1364
1365 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1366 returning the text "unknown" from the readlink rather than the path
1367 to the executable (or returning an error from the readlink). Any valid
1368 path has a '/' in it somewhere, so use that to validate the result.
1369 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1370 */
1371 if (len > 0 && memchr(buf, '/', len)) {
1372 sv_setpvn(sv,buf,len);
1373 }
1374 else {
1375 sv_setpv(sv,arg0);
1376 }
1377}
1378#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1379
1380STATIC void
1381S_set_caret_X(pTHX) {
97aff369 1382 dVAR;
b7975bdd
NC
1383 GV* tmpgv = gv_fetchpv("\030",TRUE, SVt_PV); /* $^X */
1384 if (tmpgv) {
1385#ifdef HAS_PROCSELFEXE
1386 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1387#else
1388#ifdef OS2
c69033f2 1389 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1390#else
c69033f2 1391 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1392#endif
1393#endif
1394 }
1395}
1396
954c1994
GS
1397/*
1398=for apidoc perl_parse
1399
1400Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1401
1402=cut
1403*/
1404
79072805 1405int
0cb96387 1406perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1407{
27da23d5 1408 dVAR;
6224f72b 1409 I32 oldscope;
6224f72b 1410 int ret;
db36c5a1 1411 dJMPENV;
8d063cd8 1412
9d4ba2ae
AL
1413 PERL_UNUSED_VAR(my_perl);
1414
a687059c
LW
1415#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1416#ifdef IAMSUID
1417#undef IAMSUID
cea2e8a9 1418 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1419setuid perl scripts securely.\n");
ae3f3efd 1420#endif /* IAMSUID */
a687059c
LW
1421#endif
1422
b0891165
JH
1423#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1424 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1425 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1426 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1427 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1428 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1429 if (!PL_rehash_seed_set)
1430 PL_rehash_seed = get_hash_seed();
b0891165 1431 {
9d4ba2ae 1432 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1433
1b6737cc
AL
1434 if (s && (atoi(s) == 1))
1435 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1436 }
1437#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1438
3280af22 1439 PL_origargc = argc;
e2975953 1440 PL_origargv = argv;
a0d0e21e 1441
54bfe034 1442 {
3cb9023d
JH
1443 /* Set PL_origalen be the sum of the contiguous argv[]
1444 * elements plus the size of the env in case that it is
e9137a8e 1445 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1446 * as the maximum modifiable length of $0. In the worst case
1447 * the area we are able to modify is limited to the size of
43c32782 1448 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1449 * --jhi */
e1ec3a88 1450 const char *s = NULL;
54bfe034 1451 int i;
1b6737cc 1452 const UV mask =
7d8e7db3 1453 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1454 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1455 const UV aligned =
43c32782
JH
1456 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1457
1458 /* See if all the arguments are contiguous in memory. Note
1459 * that 'contiguous' is a loose term because some platforms
1460 * align the argv[] and the envp[]. If the arguments look
1461 * like non-aligned, assume that they are 'strictly' or
1462 * 'traditionally' contiguous. If the arguments look like
1463 * aligned, we just check that they are within aligned
1464 * PTRSIZE bytes. As long as no system has something bizarre
1465 * like the argv[] interleaved with some other data, we are
1466 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1467 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1468 while (*s) s++;
1469 for (i = 1; i < PL_origargc; i++) {
1470 if ((PL_origargv[i] == s + 1
43c32782 1471#ifdef OS2
c8941eeb 1472 || PL_origargv[i] == s + 2
43c32782 1473#endif
c8941eeb
JH
1474 )
1475 ||
1476 (aligned &&
1477 (PL_origargv[i] > s &&
1478 PL_origargv[i] <=
1479 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1480 )
1481 {
1482 s = PL_origargv[i];
1483 while (*s) s++;
1484 }
1485 else
1486 break;
54bfe034 1487 }
54bfe034 1488 }
3cb9023d 1489 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1490 if (s && PL_origenviron) {
43c32782
JH
1491 if ((PL_origenviron[0] == s + 1
1492#ifdef OS2
1493 || (PL_origenviron[0] == s + 9 && (s += 8))
1494#endif
1495 )
1496 ||
1497 (aligned &&
1498 (PL_origenviron[0] > s &&
1499 PL_origenviron[0] <=
1500 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1501 )
1502 {
1503#ifndef OS2
1504 s = PL_origenviron[0];
1505 while (*s) s++;
1506#endif
1507 my_setenv("NoNe SuCh", Nullch);
1508 /* Force copy of environment. */
1509 for (i = 1; PL_origenviron[i]; i++) {
1510 if (PL_origenviron[i] == s + 1
1511 ||
1512 (aligned &&
1513 (PL_origenviron[i] > s &&
1514 PL_origenviron[i] <=
1515 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1516 )
1517 {
1518 s = PL_origenviron[i];
1519 while (*s) s++;
1520 }
1521 else
1522 break;
54bfe034 1523 }
43c32782 1524 }
54bfe034 1525 }
2d2af554 1526 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1527 }
1528
3280af22 1529 if (PL_do_undump) {
a0d0e21e
LW
1530
1531 /* Come here if running an undumped a.out. */
1532
3280af22
NIS
1533 PL_origfilename = savepv(argv[0]);
1534 PL_do_undump = FALSE;
a0d0e21e 1535 cxstack_ix = -1; /* start label stack again */
748a9306 1536 init_ids();
b7975bdd
NC
1537 assert (!PL_tainted);
1538 TAINT;
1539 S_set_caret_X(aTHX);
1540 TAINT_NOT;
a0d0e21e
LW
1541 init_postdump_symbols(argc,argv,env);
1542 return 0;
1543 }
1544
3280af22 1545 if (PL_main_root) {
3280af22
NIS
1546 op_free(PL_main_root);
1547 PL_main_root = Nullop;
ff0cee69 1548 }
3280af22
NIS
1549 PL_main_start = Nullop;
1550 SvREFCNT_dec(PL_main_cv);
1551 PL_main_cv = Nullcv;
79072805 1552
3280af22
NIS
1553 time(&PL_basetime);
1554 oldscope = PL_scopestack_ix;
599cee73 1555 PL_dowarn = G_WARN_OFF;
f86702cc 1556
14dd3ad8 1557 JMPENV_PUSH(ret);
6224f72b 1558 switch (ret) {
312caa8e 1559 case 0:
14dd3ad8 1560 parse_body(env,xsinit);
7d30b5c4
GS
1561 if (PL_checkav)
1562 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1563 ret = 0;
1564 break;
6224f72b
GS
1565 case 1:
1566 STATUS_ALL_FAILURE;
1567 /* FALL THROUGH */
1568 case 2:
1569 /* my_exit() was called */
3280af22 1570 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1571 LEAVE;
1572 FREETMPS;
3280af22 1573 PL_curstash = PL_defstash;
7d30b5c4
GS
1574 if (PL_checkav)
1575 call_list(oldscope, PL_checkav);
37038d91 1576 ret = STATUS_EXIT;
14dd3ad8 1577 break;
6224f72b 1578 case 3:
bf49b057 1579 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1580 ret = 1;
1581 break;
6224f72b 1582 }
14dd3ad8
GS
1583 JMPENV_POP;
1584 return ret;
1585}
1586
312caa8e 1587STATIC void *
14dd3ad8 1588S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1589{
27da23d5 1590 dVAR;
312caa8e 1591 int argc = PL_origargc;
8f42b153 1592 char **argv = PL_origargv;
e1ec3a88 1593 const char *scriptname = NULL;
312caa8e 1594 VOL bool dosearch = FALSE;
e1ec3a88 1595 const char *validarg = "";
312caa8e
CS
1596 register SV *sv;
1597 register char *s;
e1ec3a88 1598 const char *cddir = Nullch;
ab019eaa 1599#ifdef USE_SITECUSTOMIZE
20ef40cf 1600 bool minus_f = FALSE;
ab019eaa 1601#endif
312caa8e 1602
ae3f3efd
PS
1603 PL_fdscript = -1;
1604 PL_suidscript = -1;
3280af22 1605 sv_setpvn(PL_linestr,"",0);
396482e1 1606 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1607 SAVEFREESV(sv);
1608 init_main_stash();
54310121 1609
6224f72b
GS
1610 for (argc--,argv++; argc > 0; argc--,argv++) {
1611 if (argv[0][0] != '-' || !argv[0][1])
1612 break;
1613#ifdef DOSUID
1614 if (*validarg)
1615 validarg = " PHOOEY ";
1616 else
1617 validarg = argv[0];
ae3f3efd
PS
1618 /*
1619 * Can we rely on the kernel to start scripts with argv[1] set to
1620 * contain all #! line switches (the whole line)? (argv[0] is set to
1621 * the interpreter name, argv[2] to the script name; argv[3] and
1622 * above may contain other arguments.)
1623 */
13281fa4 1624#endif
6224f72b
GS
1625 s = argv[0]+1;
1626 reswitch:
1627 switch (*s) {
729a02f2 1628 case 'C':
1d5472a9
GS
1629#ifndef PERL_STRICT_CR
1630 case '\r':
1631#endif
6224f72b
GS
1632 case ' ':
1633 case '0':
1634 case 'F':
1635 case 'a':
1636 case 'c':
1637 case 'd':
1638 case 'D':
1639 case 'h':
1640 case 'i':
1641 case 'l':
1642 case 'M':
1643 case 'm':
1644 case 'n':
1645 case 'p':
1646 case 's':
1647 case 'u':
1648 case 'U':
1649 case 'v':
599cee73
PM
1650 case 'W':
1651 case 'X':
6224f72b 1652 case 'w':
06492da6 1653 case 'A':
155aba94 1654 if ((s = moreswitches(s)))
6224f72b
GS
1655 goto reswitch;
1656 break;
33b78306 1657
1dbad523 1658 case 't':
22f7c9c9 1659 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1660 if( !PL_tainting ) {
1661 PL_taint_warn = TRUE;
1662 PL_tainting = TRUE;
1663 }
1664 s++;
1665 goto reswitch;
6224f72b 1666 case 'T':
22f7c9c9 1667 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1668 PL_tainting = TRUE;
317ea90d 1669 PL_taint_warn = FALSE;
6224f72b
GS
1670 s++;
1671 goto reswitch;
f86702cc 1672
bc9b29db
RH
1673 case 'E':
1674 PL_minus_E = TRUE;
1675 /* FALL THROUGH */
6224f72b 1676 case 'e':
bf4acbe4
GS
1677#ifdef MACOS_TRADITIONAL
1678 /* ignore -e for Dev:Pseudo argument */
1679 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1680 break;
bf4acbe4 1681#endif
ae3f3efd 1682 forbid_setid("-e");
3280af22 1683 if (!PL_e_script) {
396482e1 1684 PL_e_script = newSVpvs("");
0cb96387 1685 filter_add(read_e_script, NULL);
6224f72b
GS
1686 }
1687 if (*++s)
3280af22 1688 sv_catpv(PL_e_script, s);
6224f72b 1689 else if (argv[1]) {
3280af22 1690 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1691 argc--,argv++;
1692 }
1693 else
bc9b29db 1694 Perl_croak(aTHX_ "No code specified for -%c", *s);
396482e1 1695 sv_catpvs(PL_e_script, "\n");
6224f72b 1696 break;
afe37c7d 1697
20ef40cf 1698 case 'f':
f5542d3a 1699#ifdef USE_SITECUSTOMIZE
20ef40cf 1700 minus_f = TRUE;
f5542d3a 1701#endif
20ef40cf
GA
1702 s++;
1703 goto reswitch;
1704
6224f72b
GS
1705 case 'I': /* -I handled both here and in moreswitches() */
1706 forbid_setid("-I");
1707 if (!*++s && (s=argv[1]) != Nullch) {
1708 argc--,argv++;
1709 }
6224f72b 1710 if (s && *s) {
0df16ed7 1711 STRLEN len = strlen(s);
aec46f14 1712 const char * const p = savepvn(s, len);
88fe16b2 1713 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1714 sv_catpvs(sv, "-I");
0df16ed7 1715 sv_catpvn(sv, p, len);
396482e1 1716 sv_catpvs(sv, " ");
6224f72b 1717 Safefree(p);
0df16ed7
GS
1718 }
1719 else
a67e862a 1720 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1721 break;
1722 case 'P':
1723 forbid_setid("-P");
3280af22 1724 PL_preprocess = TRUE;
6224f72b
GS
1725 s++;
1726 goto reswitch;
1727 case 'S':
1728 forbid_setid("-S");
1729 dosearch = TRUE;
1730 s++;
1731 goto reswitch;
1732 case 'V':
7edfd0ef
NC
1733 {
1734 SV *opts_prog;
1735
1736 if (!PL_preambleav)
1737 PL_preambleav = newAV();
1738 av_push(PL_preambleav,
396482e1 1739 newSVpvs("use Config;"));
7edfd0ef
NC
1740 if (*++s != ':') {
1741 STRLEN opts;
1742
396482e1 1743 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1744#ifdef VMS
396482e1 1745 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1746#else
396482e1 1747 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1748#endif
7edfd0ef 1749 opts = SvCUR(opts_prog);
efcaa95b 1750
9cd7d3f2 1751 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1752# ifdef DEBUGGING
e2e4dbf1 1753 " DEBUGGING"
6224f72b 1754# endif
4f185743
NC
1755# ifdef DEBUG_LEAKING_SCALARS
1756 " DEBUG_LEAKING_SCALARS"
1757# endif
85e1fcb9 1758# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1759 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1760# endif
1761# ifdef FAKE_THREADS
e2e4dbf1 1762 " FAKE_THREADS"
85e1fcb9 1763# endif
6224f72b 1764# ifdef MULTIPLICITY
e2e4dbf1 1765 " MULTIPLICITY"
6224f72b 1766# endif
85e1fcb9 1767# ifdef MYMALLOC
e2e4dbf1 1768 " MYMALLOC"
85e1fcb9 1769# endif
3bcf5ed8
SP
1770# ifdef NO_MATHOMS
1771 " NO_MATHOMS"
1772# endif
85e1fcb9 1773# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1774 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1775# endif
1776# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1777 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1778# endif
1779# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1780 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1781# endif
1782# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1783 " PERL_IMPLICIT_SYS"
85e1fcb9
SH
1784# endif
1785# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1786 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1787# endif
1788# ifdef PERL_NEED_APPCTX
e2e4dbf1 1789 " PERL_NEED_APPCTX"
85e1fcb9
SH
1790# endif
1791# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1792 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1793# endif
1794# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1795 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1796# endif
9c0a4d5d
DM
1797# ifdef PERL_TRACK_MEMPOOL
1798 " PERL_TRACK_MEMPOOL"
1799# endif
417cd4a8
SP
1800# ifdef PERL_USE_SAFE_PUTENV
1801 " PERL_USE_SAFE_PUTENV"
1802# endif
ca0c25f6
NC
1803#ifdef PERL_USES_PL_PIDSTATUS
1804 " PERL_USES_PL_PIDSTATUS"
1805#endif
85e1fcb9 1806# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1807 " PL_OP_SLAB_ALLOC"
85e1fcb9 1808# endif
a0158404
NC
1809# ifdef SPRINTF_RETURNS_STRLEN
1810 " SPRINTF_RETURNS_STRLEN"
1811# endif
85e1fcb9 1812# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1813 " THREADS_HAVE_PIDS"
85e1fcb9 1814# endif
4d1ff10f 1815# ifdef USE_5005THREADS
e2e4dbf1 1816 " USE_5005THREADS"
b363f7ed 1817# endif
85e1fcb9 1818# ifdef USE_64_BIT_ALL
e2e4dbf1 1819 " USE_64_BIT_ALL"
ac5e8965 1820# endif
10cc9d2a 1821# ifdef USE_64_BIT_INT
e2e4dbf1 1822 " USE_64_BIT_INT"
10cc9d2a 1823# endif
85e1fcb9 1824# ifdef USE_ITHREADS
e2e4dbf1 1825 " USE_ITHREADS"
85e1fcb9
SH
1826# endif
1827# ifdef USE_LARGE_FILES
e2e4dbf1 1828 " USE_LARGE_FILES"
ac5e8965
JH
1829# endif
1830# ifdef USE_LONG_DOUBLE
e2e4dbf1 1831 " USE_LONG_DOUBLE"
ac5e8965 1832# endif
85e1fcb9 1833# ifdef USE_PERLIO
e2e4dbf1 1834 " USE_PERLIO"
53430762 1835# endif
85e1fcb9 1836# ifdef USE_REENTRANT_API
e2e4dbf1 1837 " USE_REENTRANT_API"
85e1fcb9
SH
1838# endif
1839# ifdef USE_SFIO
e2e4dbf1 1840 " USE_SFIO"
ac5e8965 1841# endif
20ef40cf 1842# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1843 " USE_SITECUSTOMIZE"
20ef40cf 1844# endif
85e1fcb9 1845# ifdef USE_SOCKS
e2e4dbf1 1846 " USE_SOCKS"
b363f7ed 1847# endif
e2e4dbf1 1848 );
efcaa95b 1849
7edfd0ef
NC
1850 while (SvCUR(opts_prog) > opts+76) {
1851 /* find last space after "options: " and before col 76
1852 */
efcaa95b 1853
7edfd0ef 1854 const char *space;
c4420975 1855 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1856 const char c = pv[opts+76];
1857 pv[opts+76] = '\0';
1858 space = strrchr(pv+opts+26, ' ');
1859 pv[opts+76] = c;
1860 if (!space) break; /* "Can't happen" */
efcaa95b 1861
7edfd0ef 1862 /* break the line before that space */
efcaa95b 1863
7edfd0ef 1864 opts = space - pv;
89529cee 1865 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1866 STR_WITH_LEN("\\n "));
7edfd0ef 1867 }
efcaa95b 1868
396482e1 1869 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1870
6224f72b 1871#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1872 if (LOCAL_PATCH_COUNT > 0) {
1873 int i;
396482e1 1874 sv_catpvs(opts_prog,
7edfd0ef
NC
1875 "\" Locally applied patches:\\n\",");
1876 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1877 if (PL_localpatches[i])
1878 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1879 0, PL_localpatches[i], 0);
1880 }
6224f72b 1881 }
6224f72b 1882#endif
7edfd0ef
NC
1883 Perl_sv_catpvf(aTHX_ opts_prog,
1884 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1885#ifdef __DATE__
1886# ifdef __TIME__
7edfd0ef
NC
1887 Perl_sv_catpvf(aTHX_ opts_prog,
1888 ",\" Compiled at %s %s\\n\"",__DATE__,
1889 __TIME__);
6224f72b 1890# else
7edfd0ef
NC
1891 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1892 __DATE__);
6224f72b
GS
1893# endif
1894#endif
396482e1 1895 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1896 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1897 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1898#ifdef __CYGWIN__
396482e1 1899 sv_catpvs(opts_prog,
7edfd0ef 1900 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1901#endif
396482e1 1902 sv_catpvs(opts_prog,
7edfd0ef
NC
1903 "print \" \\%ENV:\\n @env\\n\" if @env;"
1904 "print \" \\@INC:\\n @INC\\n\";");
1905 }
1906 else {
1907 ++s;
1908 opts_prog = Perl_newSVpvf(aTHX_
1909 "Config::config_vars(qw%c%s%c)",
1910 0, s, 0);
1911 s += strlen(s);
1912 }
1913 av_push(PL_preambleav, opts_prog);
1914 /* don't look for script or read stdin */
1915 scriptname = BIT_BUCKET;
1916 goto reswitch;
6224f72b 1917 }
6224f72b 1918 case 'x':
3280af22 1919 PL_doextract = TRUE;
6224f72b
GS
1920 s++;
1921 if (*s)
f4c556ac 1922 cddir = s;
6224f72b
GS
1923 break;
1924 case 0:
1925 break;
1926 case '-':
1927 if (!*++s || isSPACE(*s)) {
1928 argc--,argv++;
1929 goto switch_end;
1930 }
1931 /* catch use of gnu style long options */
1932 if (strEQ(s, "version")) {
dd374669 1933 s = (char *)"v";
6224f72b
GS
1934 goto reswitch;
1935 }
1936 if (strEQ(s, "help")) {
dd374669 1937 s = (char *)"h";
6224f72b
GS
1938 goto reswitch;
1939 }
1940 s--;
1941 /* FALL THROUGH */
1942 default:
cea2e8a9 1943 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1944 }
1945 }
6224f72b 1946 switch_end:
54310121 1947
f675dbe5
CB
1948 if (
1949#ifndef SECURE_INTERNAL_GETENV
1950 !PL_tainting &&
1951#endif
cf756827 1952 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1953 {
e1ec3a88 1954 const char *popt = s;
74288ac8
GS
1955 while (isSPACE(*s))
1956 s++;
317ea90d 1957 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1958 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1959 PL_tainting = TRUE;
317ea90d
MS
1960 PL_taint_warn = FALSE;
1961 }
74288ac8 1962 else {
cf756827 1963 char *popt_copy = Nullch;
74288ac8 1964 while (s && *s) {
4ea8f8fb 1965 char *d;
74288ac8
GS
1966 while (isSPACE(*s))
1967 s++;
1968 if (*s == '-') {
1969 s++;
1970 if (isSPACE(*s))
1971 continue;
1972 }
4ea8f8fb 1973 d = s;
74288ac8
GS
1974 if (!*s)
1975 break;
e4af53b0 1976 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 1977 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1978 while (++s && *s) {
1979 if (isSPACE(*s)) {
cf756827
GS
1980 if (!popt_copy) {
1981 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1982 s = popt_copy + (s - popt);
1983 d = popt_copy + (d - popt);
1984 }
4ea8f8fb
MS
1985 *s++ = '\0';
1986 break;
1987 }
1988 }
1c4db469 1989 if (*d == 't') {
317ea90d
MS
1990 if( !PL_tainting ) {
1991 PL_taint_warn = TRUE;
1992 PL_tainting = TRUE;
1993 }
1c4db469
RGS
1994 } else {
1995 moreswitches(d);
1996 }
6224f72b 1997 }
6224f72b
GS
1998 }
1999 }
a0d0e21e 2000
20ef40cf
GA
2001#ifdef USE_SITECUSTOMIZE
2002 if (!minus_f) {
2003 if (!PL_preambleav)
2004 PL_preambleav = newAV();
2005 av_unshift(PL_preambleav, 1);
2006 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
2007 }
2008#endif
2009
317ea90d
MS
2010 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
2011 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
2012 }
2013
6224f72b
GS
2014 if (!scriptname)
2015 scriptname = argv[0];
3280af22 2016 if (PL_e_script) {
6224f72b
GS
2017 argc++,argv--;
2018 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2019 }
2020 else if (scriptname == Nullch) {
2021#ifdef MSDOS
2022 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2023 moreswitches("h");
2024#endif
2025 scriptname = "-";
2026 }
2027
b7975bdd
NC
2028 /* Set $^X early so that it can be used for relocatable paths in @INC */
2029 assert (!PL_tainted);
2030 TAINT;
2031 S_set_caret_X(aTHX);
2032 TAINT_NOT;
6224f72b
GS
2033 init_perllib();
2034
c5cccb17 2035 open_script(scriptname,dosearch,sv);
6224f72b 2036
c5cccb17 2037 validate_suid(validarg, scriptname);
6224f72b 2038
64ca3a65 2039#ifndef PERL_MICRO
0b5b802d
GS
2040#if defined(SIGCHLD) || defined(SIGCLD)
2041 {
2042#ifndef SIGCHLD
2043# define SIGCHLD SIGCLD
2044#endif
2045 Sighandler_t sigstate = rsignal_state(SIGCHLD);
8aad04aa 2046 if (sigstate == (Sighandler_t) SIG_IGN) {
0b5b802d 2047 if (ckWARN(WARN_SIGNAL))
9014280d 2048 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS
2049 "Can't ignore signal CHLD, forcing to default");
2050 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2051 }
2052 }
2053#endif
64ca3a65 2054#endif
0b5b802d 2055
bf4acbe4
GS
2056#ifdef MACOS_TRADITIONAL
2057 if (PL_doextract || gMacPerl_AlwaysExtract) {
2058#else
f4c556ac 2059 if (PL_doextract) {
bf4acbe4 2060#endif
6224f72b 2061 find_beginning();
dd374669 2062 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
f4c556ac
GS
2063 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2064
2065 }
6224f72b 2066
3280af22
NIS
2067 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
2068 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2069 CvUNIQUE_on(PL_compcv);
2070
dd2155a4 2071 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 2072#ifdef USE_5005THREADS
533c011a 2073 CvOWNER(PL_compcv) = 0;
a02a5408 2074 Newx(CvMUTEXP(PL_compcv), 1, perl_mutex);
533c011a 2075 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 2076#endif /* USE_5005THREADS */
6224f72b 2077
0c4f7ff0 2078 boot_core_PerlIO();
6224f72b 2079 boot_core_UNIVERSAL();
09bef843 2080 boot_core_xsutils();
6224f72b
GS
2081
2082 if (xsinit)
acfe0abc 2083 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2084#ifndef PERL_MICRO
d0d72822 2085#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2086 init_os_extras();
6224f72b 2087#endif
64ca3a65 2088#endif
6224f72b 2089
29209bc5 2090#ifdef USE_SOCKS
1b9c9cf5
DH
2091# ifdef HAS_SOCKS5_INIT
2092 socks5_init(argv[0]);
2093# else
29209bc5 2094 SOCKSinit(argv[0]);
1b9c9cf5 2095# endif
ac27b0f5 2096#endif
29209bc5 2097
6224f72b
GS
2098 init_predump_symbols();
2099 /* init_postdump_symbols not currently designed to be called */
2100 /* more than once (ENV isn't cleared first, for example) */
2101 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2102 if (!PL_do_undump)
6224f72b
GS
2103 init_postdump_symbols(argc,argv,env);
2104
27da23d5
JH
2105 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2106 * or explicitly in some platforms.
085a54d9 2107 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2108 * look like the user wants to use UTF-8. */
a0fd4948 2109#if defined(__SYMBIAN32__)
27da23d5
JH
2110 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2111#endif
06e66572
JH
2112 if (PL_unicode) {
2113 /* Requires init_predump_symbols(). */
a05d7ebb 2114 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2115 IO* io;
2116 PerlIO* fp;
2117 SV* sv;
2118
a05d7ebb 2119 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2120 * and the default open disciplines. */
a05d7ebb
JH
2121 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2122 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2123 (fp = IoIFP(io)))
2124 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2125 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2126 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2127 (fp = IoOFP(io)))
2128 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2129 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2130 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2131 (fp = IoOFP(io)))
2132 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2133 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2134 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
2135 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2136 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2137 if (in) {
2138 if (out)
2139 sv_setpvn(sv, ":utf8\0:utf8", 11);
2140 else
2141 sv_setpvn(sv, ":utf8\0", 6);
2142 }
2143 else if (out)
2144 sv_setpvn(sv, "\0:utf8", 6);
2145 SvSETMAGIC(sv);
2146 }
b310b053
JH
2147 }
2148 }
2149
4ffa73a3
JH
2150 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2151 if (strEQ(s, "unsafe"))
2152 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2153 else if (strEQ(s, "safe"))
2154 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2155 else
2156 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2157 }
2158
6224f72b
GS
2159 init_lexer();
2160
2161 /* now parse the script */
2162
93189314 2163 SETERRNO(0,SS_NORMAL);
3280af22 2164 PL_error_count = 0;
bf4acbe4
GS
2165#ifdef MACOS_TRADITIONAL
2166 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2167 if (PL_minus_c)
2168 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2169 else {
2170 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2171 MacPerl_MPWFileName(PL_origfilename));
2172 }
2173 }
2174#else
3280af22
NIS
2175 if (yyparse() || PL_error_count) {
2176 if (PL_minus_c)
cea2e8a9 2177 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2178 else {
cea2e8a9 2179 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2180 PL_origfilename);
6224f72b
GS
2181 }
2182 }
bf4acbe4 2183#endif
57843af0 2184 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2185 PL_curstash = PL_defstash;
2186 PL_preprocess = FALSE;
2187 if (PL_e_script) {
2188 SvREFCNT_dec(PL_e_script);
2189 PL_e_script = Nullsv;
6224f72b
GS
2190 }
2191
3280af22 2192 if (PL_do_undump)
6224f72b
GS
2193 my_unexec();
2194
57843af0
GS
2195 if (isWARN_ONCE) {
2196 SAVECOPFILE(PL_curcop);
2197 SAVECOPLINE(PL_curcop);
3280af22 2198 gv_check(PL_defstash);
57843af0 2199 }
6224f72b
GS
2200
2201 LEAVE;
2202 FREETMPS;
2203
2204#ifdef MYMALLOC
2205 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2206 dump_mstats("after compilation:");
2207#endif
2208
2209 ENTER;
3280af22 2210 PL_restartop = 0;
312caa8e 2211 return NULL;
6224f72b
GS
2212}
2213
954c1994
GS
2214/*
2215=for apidoc perl_run
2216
2217Tells a Perl interpreter to run. See L<perlembed>.
2218
2219=cut
2220*/
2221
6224f72b 2222int
0cb96387 2223perl_run(pTHXx)
6224f72b 2224{
97aff369 2225 dVAR;
6224f72b 2226 I32 oldscope;
14dd3ad8 2227 int ret = 0;
db36c5a1 2228 dJMPENV;
6224f72b 2229
9d4ba2ae
AL
2230 PERL_UNUSED_ARG(my_perl);
2231
3280af22 2232 oldscope = PL_scopestack_ix;
96e176bf
CL
2233#ifdef VMS
2234 VMSISH_HUSHED = 0;
2235#endif
6224f72b 2236
14dd3ad8 2237 JMPENV_PUSH(ret);
6224f72b
GS
2238 switch (ret) {
2239 case 1:
2240 cxstack_ix = -1; /* start context stack again */
312caa8e 2241 goto redo_body;
14dd3ad8 2242 case 0: /* normal completion */
14dd3ad8
GS
2243 redo_body:
2244 run_body(oldscope);
14dd3ad8
GS
2245 /* FALL THROUGH */
2246 case 2: /* my_exit() */
3280af22 2247 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2248 LEAVE;
2249 FREETMPS;
3280af22 2250 PL_curstash = PL_defstash;
3a1ee7e8 2251 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2252 PL_endav && !PL_minus_c)
2253 call_list(oldscope, PL_endav);
6224f72b
GS
2254#ifdef MYMALLOC
2255 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2256 dump_mstats("after execution: ");
2257#endif
37038d91 2258 ret = STATUS_EXIT;
14dd3ad8 2259 break;
6224f72b 2260 case 3:
312caa8e
CS
2261 if (PL_restartop) {
2262 POPSTACK_TO(PL_mainstack);
2263 goto redo_body;
6224f72b 2264 }
bf49b057 2265 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2266 FREETMPS;
14dd3ad8
GS
2267 ret = 1;
2268 break;
6224f72b
GS
2269 }
2270
14dd3ad8
GS
2271 JMPENV_POP;
2272 return ret;
312caa8e
CS
2273}
2274
14dd3ad8 2275
dd374669 2276STATIC void
14dd3ad8
GS
2277S_run_body(pTHX_ I32 oldscope)
2278{
97aff369 2279 dVAR;
6224f72b 2280 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2281 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2282
3280af22 2283 if (!PL_restartop) {
6224f72b 2284 DEBUG_x(dump_all());
cf2782cd 2285#ifdef DEBUGGING
ecae49c0
NC
2286 if (!DEBUG_q_TEST)
2287 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2288#endif
b900a521
JH
2289 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2290 PTR2UV(thr)));
6224f72b 2291
3280af22 2292 if (PL_minus_c) {
bf4acbe4 2293#ifdef MACOS_TRADITIONAL
e69a2255
JH
2294 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2295 (gMacPerl_ErrorFormat ? "# " : ""),
2296 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2297#else
bf49b057 2298 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2299#endif
6224f72b
GS
2300 my_exit(0);
2301 }
3280af22 2302 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2303 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2304 if (PL_initav)
2305 call_list(oldscope, PL_initav);
6224f72b
GS
2306 }
2307
2308 /* do it */
2309
3280af22 2310 if (PL_restartop) {
533c011a 2311 PL_op = PL_restartop;
3280af22 2312 PL_restartop = 0;
cea2e8a9 2313 CALLRUNOPS(aTHX);
6224f72b 2314 }
3280af22
NIS
2315 else if (PL_main_start) {
2316 CvDEPTH(PL_main_cv) = 1;
533c011a 2317 PL_op = PL_main_start;
cea2e8a9 2318 CALLRUNOPS(aTHX);
6224f72b 2319 }
f6b3007c
JH
2320 my_exit(0);
2321 /* NOTREACHED */
6224f72b
GS
2322}
2323
954c1994 2324/*
ccfc67b7
JH
2325=head1 SV Manipulation Functions
2326
954c1994
GS
2327=for apidoc p||get_sv
2328
2329Returns the SV of the specified Perl scalar. If C<create> is set and the
2330Perl variable does not exist then it will be created. If C<create> is not
2331set and the variable does not exist then NULL is returned.
2332
2333=cut
2334*/
2335
6224f72b 2336SV*
864dbfa3 2337Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2338{
2339 GV *gv;
4d1ff10f 2340#ifdef USE_5005THREADS
6224f72b
GS
2341 if (name[1] == '\0' && !isALPHA(name[0])) {
2342 PADOFFSET tmp = find_threadsv(name);
411caa50 2343 if (tmp != NOT_IN_PAD)
6224f72b 2344 return THREADSV(tmp);
6224f72b 2345 }
4d1ff10f 2346#endif /* USE_5005THREADS */
6224f72b
GS
2347 gv = gv_fetchpv(name, create, SVt_PV);
2348 if (gv)
2349 return GvSV(gv);
2350 return Nullsv;
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);
a0d0e21e
LW
2427 return Nullcv;
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{
c4420975 2822 register GV * const gv = gv_fetchpv(sym,TRUE, 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 *
864dbfa3 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':
bbce6d69 3013 forbid_setid("-d");
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
bbce6d69 3047 forbid_setid("-D");
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() */
bbce6d69 3079 forbid_setid("-I");
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);
3108 PL_ors_sv = Nullsv;
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
SF
3127 case 'A':
3128 forbid_setid("-A");
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':
bbce6d69 3151 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
3152 /* FALL THROUGH */
3153 case 'm':
bbce6d69 3154 forbid_setid("-m"); /* 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':
bbce6d69 3201 forbid_setid("-s");
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
LW
3379 }
3380 return Nullch;
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 */
aa689395 3409# else
79072805 3410 ABORT(); /* for use with undump */
aa689395 3411# endif
a5f75d66 3412#endif
79072805
LW
3413}
3414
cb68f92d
GS
3415/* initialize curinterp */
3416STATIC void
cea2e8a9 3417S_init_interp(pTHX)
cb68f92d 3418{
97aff369 3419 dVAR;
acfe0abc
GS
3420#ifdef MULTIPLICITY
3421# define PERLVAR(var,type)
3422# define PERLVARA(var,n,type)
3423# if defined(PERL_IMPLICIT_CONTEXT)
3424# if defined(USE_5005THREADS)
3425# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
27da23d5 3426# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
3427# else /* !USE_5005THREADS */
3428# define PERLVARI(var,type,init) aTHX->var = init;
3429# define PERLVARIC(var,type,init) aTHX->var = init;
3430# endif /* USE_5005THREADS */
3967c732 3431# else
acfe0abc
GS
3432# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3433# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3434# endif
acfe0abc
GS
3435# include "intrpvar.h"
3436# ifndef USE_5005THREADS
3437# include "thrdvar.h"
3438# endif
3439# undef PERLVAR
3440# undef PERLVARA
3441# undef PERLVARI
3442# undef PERLVARIC
3443#else
3444# define PERLVAR(var,type)
3445# define PERLVARA(var,n,type)
3446# define PERLVARI(var,type,init) PL_##var = init;
3447# define PERLVARIC(var,type,init) PL_##var = init;
3448# include "intrpvar.h"
3449# ifndef USE_5005THREADS
3450# include "thrdvar.h"
3451# endif
3452# undef PERLVAR
3453# undef PERLVARA
3454# undef PERLVARI
3455# undef PERLVARIC
cb68f92d
GS
3456#endif
3457
cb68f92d
GS
3458}
3459
76e3520e 3460STATIC void
cea2e8a9 3461S_init_main_stash(pTHX)
79072805 3462{
97aff369 3463 dVAR;
463ee0b2 3464 GV *gv;
6e72f9df 3465
3280af22 3466 PL_curstash = PL_defstash = newHV();
23579a14
NC
3467 /* We know that the string "main" will be in the global shared string
3468 table, so it's a small saving to use it rather than allocate another
3469 8 bytes. */
18916d0d 3470 PL_curstname = newSVpvs_share("main");
adbc6bb1 3471 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
23579a14
NC
3472 /* If we hadn't caused another reference to "main" to be in the shared
3473 string table above, then it would be worth reordering these two,
3474 because otherwise all we do is delete "main" from it as a consequence
3475 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3476 SvREFCNT_dec(GvHV(gv));
23579a14 3477 hv_name_set(PL_defstash, "main", 4, 0);
3280af22 3478 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3479 SvREADONLY_on(gv);
3280af22 3480 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
5fd80ba5 3481 SvREFCNT_inc(PL_incgv); /* Don't allow it to be freed */
3280af22
NIS
3482 GvMULTI_on(PL_incgv);
3483 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
3484 GvMULTI_on(PL_hintgv);
3485 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
5fd80ba5 3486 SvREFCNT_inc(PL_defgv);
3280af22 3487 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
5fd80ba5 3488 SvREFCNT_inc(PL_errgv);
3280af22
NIS
3489 GvMULTI_on(PL_errgv);
3490 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
3491 GvMULTI_on(PL_replgv);
cea2e8a9 3492 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3493#ifdef PERL_DONT_CREATE_GVSV
3494 gv_SVadd(PL_errgv);
3495#endif
38a03e6e
MB
3496 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3497 sv_setpvn(ERRSV, "", 0);
3280af22 3498 PL_curstash = PL_defstash;
11faa288 3499 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 3500 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 3501 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 3502 /* We must init $/ before switches are processed. */
864dbfa3 3503 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
3504}
3505
ae3f3efd 3506/* PSz 18 Nov 03 fdscript now global but do not change prototype */
76e3520e 3507STATIC void
dd374669 3508S_open_script(pTHX_ const char *scriptname, bool dosearch, SV *sv)
79072805 3509{
ae3f3efd 3510#ifndef IAMSUID
e1ec3a88
AL
3511 const char *quote;
3512 const char *code;
3513 const char *cpp_discard_flag;
3514 const char *perl;
ae3f3efd 3515#endif
27da23d5 3516 dVAR;
1b24ed4b 3517
ae3f3efd
PS
3518 PL_fdscript = -1;
3519 PL_suidscript = -1;
79072805 3520
3280af22 3521 if (PL_e_script) {
89529cee 3522 PL_origfilename = savepvs("-e");