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performance tweaking op.c
[perl5.git] / perl.c
CommitLineData
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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 *
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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
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9 */
10
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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. */
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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
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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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
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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) {
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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;
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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
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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
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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{
3280af22
NIS
1338 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1339 PL_exitlist[PL_exitlistlen].fn = fn;
1340 PL_exitlist[PL_exitlistlen].ptr = ptr;
1341 ++PL_exitlistlen;
4b556e6c
JD
1342}
1343
56cf6df8
RGS
1344#ifdef HAS_PROCSELFEXE
1345/* This is a function so that we don't hold on to MAXPATHLEN
1346 bytes of stack longer than necessary
1347 */
1348STATIC void
e1ec3a88 1349S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1350{
1351 char buf[MAXPATHLEN];
1352 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1353
1354 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1355 includes a spurious NUL which will cause $^X to fail in system
1356 or backticks (this will prevent extensions from being built and
1357 many tests from working). readlink is not meant to add a NUL.
1358 Normal readlink works fine.
1359 */
1360 if (len > 0 && buf[len-1] == '\0') {
1361 len--;
1362 }
1363
1364 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1365 returning the text "unknown" from the readlink rather than the path
1366 to the executable (or returning an error from the readlink). Any valid
1367 path has a '/' in it somewhere, so use that to validate the result.
1368 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1369 */
1370 if (len > 0 && memchr(buf, '/', len)) {
1371 sv_setpvn(sv,buf,len);
1372 }
1373 else {
1374 sv_setpv(sv,arg0);
1375 }
1376}
1377#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1378
1379STATIC void
1380S_set_caret_X(pTHX) {
1381 GV* tmpgv = gv_fetchpv("\030",TRUE, SVt_PV); /* $^X */
1382 if (tmpgv) {
1383#ifdef HAS_PROCSELFEXE
1384 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1385#else
1386#ifdef OS2
c69033f2 1387 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1388#else
c69033f2 1389 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1390#endif
1391#endif
1392 }
1393}
1394
954c1994
GS
1395/*
1396=for apidoc perl_parse
1397
1398Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1399
1400=cut
1401*/
1402
79072805 1403int
0cb96387 1404perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1405{
27da23d5 1406 dVAR;
6224f72b 1407 I32 oldscope;
6224f72b 1408 int ret;
db36c5a1 1409 dJMPENV;
8d063cd8 1410
9d4ba2ae
AL
1411 PERL_UNUSED_VAR(my_perl);
1412
a687059c
LW
1413#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1414#ifdef IAMSUID
1415#undef IAMSUID
cea2e8a9 1416 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1417setuid perl scripts securely.\n");
ae3f3efd 1418#endif /* IAMSUID */
a687059c
LW
1419#endif
1420
b0891165
JH
1421#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1422 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1423 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1424 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1425 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1426 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1427 if (!PL_rehash_seed_set)
1428 PL_rehash_seed = get_hash_seed();
b0891165 1429 {
9d4ba2ae 1430 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1431
1b6737cc
AL
1432 if (s && (atoi(s) == 1))
1433 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1434 }
1435#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1436
3280af22 1437 PL_origargc = argc;
e2975953 1438 PL_origargv = argv;
a0d0e21e 1439
54bfe034 1440 {
3cb9023d
JH
1441 /* Set PL_origalen be the sum of the contiguous argv[]
1442 * elements plus the size of the env in case that it is
e9137a8e 1443 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1444 * as the maximum modifiable length of $0. In the worst case
1445 * the area we are able to modify is limited to the size of
43c32782 1446 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1447 * --jhi */
e1ec3a88 1448 const char *s = NULL;
54bfe034 1449 int i;
1b6737cc 1450 const UV mask =
7d8e7db3 1451 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1452 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1453 const UV aligned =
43c32782
JH
1454 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1455
1456 /* See if all the arguments are contiguous in memory. Note
1457 * that 'contiguous' is a loose term because some platforms
1458 * align the argv[] and the envp[]. If the arguments look
1459 * like non-aligned, assume that they are 'strictly' or
1460 * 'traditionally' contiguous. If the arguments look like
1461 * aligned, we just check that they are within aligned
1462 * PTRSIZE bytes. As long as no system has something bizarre
1463 * like the argv[] interleaved with some other data, we are
1464 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1465 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1466 while (*s) s++;
1467 for (i = 1; i < PL_origargc; i++) {
1468 if ((PL_origargv[i] == s + 1
43c32782 1469#ifdef OS2
c8941eeb 1470 || PL_origargv[i] == s + 2
43c32782 1471#endif
c8941eeb
JH
1472 )
1473 ||
1474 (aligned &&
1475 (PL_origargv[i] > s &&
1476 PL_origargv[i] <=
1477 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1478 )
1479 {
1480 s = PL_origargv[i];
1481 while (*s) s++;
1482 }
1483 else
1484 break;
54bfe034 1485 }
54bfe034 1486 }
3cb9023d 1487 /* Can we grab env area too to be used as the area for $0? */
43c32782
JH
1488 if (PL_origenviron) {
1489 if ((PL_origenviron[0] == s + 1
1490#ifdef OS2
1491 || (PL_origenviron[0] == s + 9 && (s += 8))
1492#endif
1493 )
1494 ||
1495 (aligned &&
1496 (PL_origenviron[0] > s &&
1497 PL_origenviron[0] <=
1498 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1499 )
1500 {
1501#ifndef OS2
1502 s = PL_origenviron[0];
1503 while (*s) s++;
1504#endif
1505 my_setenv("NoNe SuCh", Nullch);
1506 /* Force copy of environment. */
1507 for (i = 1; PL_origenviron[i]; i++) {
1508 if (PL_origenviron[i] == s + 1
1509 ||
1510 (aligned &&
1511 (PL_origenviron[i] > s &&
1512 PL_origenviron[i] <=
1513 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1514 )
1515 {
1516 s = PL_origenviron[i];
1517 while (*s) s++;
1518 }
1519 else
1520 break;
54bfe034 1521 }
43c32782 1522 }
54bfe034 1523 }
284e1220 1524 PL_origalen = s - PL_origargv[0] + 1;
54bfe034
JH
1525 }
1526
3280af22 1527 if (PL_do_undump) {
a0d0e21e
LW
1528
1529 /* Come here if running an undumped a.out. */
1530
3280af22
NIS
1531 PL_origfilename = savepv(argv[0]);
1532 PL_do_undump = FALSE;
a0d0e21e 1533 cxstack_ix = -1; /* start label stack again */
748a9306 1534 init_ids();
b7975bdd
NC
1535 assert (!PL_tainted);
1536 TAINT;
1537 S_set_caret_X(aTHX);
1538 TAINT_NOT;
a0d0e21e
LW
1539 init_postdump_symbols(argc,argv,env);
1540 return 0;
1541 }
1542
3280af22 1543 if (PL_main_root) {
3280af22
NIS
1544 op_free(PL_main_root);
1545 PL_main_root = Nullop;
ff0cee69 1546 }
3280af22
NIS
1547 PL_main_start = Nullop;
1548 SvREFCNT_dec(PL_main_cv);
1549 PL_main_cv = Nullcv;
79072805 1550
3280af22
NIS
1551 time(&PL_basetime);
1552 oldscope = PL_scopestack_ix;
599cee73 1553 PL_dowarn = G_WARN_OFF;
f86702cc 1554
14dd3ad8 1555 JMPENV_PUSH(ret);
6224f72b 1556 switch (ret) {
312caa8e 1557 case 0:
14dd3ad8 1558 parse_body(env,xsinit);
7d30b5c4
GS
1559 if (PL_checkav)
1560 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1561 ret = 0;
1562 break;
6224f72b
GS
1563 case 1:
1564 STATUS_ALL_FAILURE;
1565 /* FALL THROUGH */
1566 case 2:
1567 /* my_exit() was called */
3280af22 1568 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1569 LEAVE;
1570 FREETMPS;
3280af22 1571 PL_curstash = PL_defstash;
7d30b5c4
GS
1572 if (PL_checkav)
1573 call_list(oldscope, PL_checkav);
37038d91 1574 ret = STATUS_EXIT;
14dd3ad8 1575 break;
6224f72b 1576 case 3:
bf49b057 1577 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1578 ret = 1;
1579 break;
6224f72b 1580 }
14dd3ad8
GS
1581 JMPENV_POP;
1582 return ret;
1583}
1584
312caa8e 1585STATIC void *
14dd3ad8 1586S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1587{
27da23d5 1588 dVAR;
312caa8e 1589 int argc = PL_origargc;
8f42b153 1590 char **argv = PL_origargv;
e1ec3a88 1591 const char *scriptname = NULL;
312caa8e 1592 VOL bool dosearch = FALSE;
e1ec3a88 1593 const char *validarg = "";
312caa8e
CS
1594 register SV *sv;
1595 register char *s;
e1ec3a88 1596 const char *cddir = Nullch;
ab019eaa 1597#ifdef USE_SITECUSTOMIZE
20ef40cf 1598 bool minus_f = FALSE;
ab019eaa 1599#endif
312caa8e 1600
ae3f3efd
PS
1601 PL_fdscript = -1;
1602 PL_suidscript = -1;
3280af22 1603 sv_setpvn(PL_linestr,"",0);
396482e1 1604 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1605 SAVEFREESV(sv);
1606 init_main_stash();
54310121 1607
6224f72b
GS
1608 for (argc--,argv++; argc > 0; argc--,argv++) {
1609 if (argv[0][0] != '-' || !argv[0][1])
1610 break;
1611#ifdef DOSUID
1612 if (*validarg)
1613 validarg = " PHOOEY ";
1614 else
1615 validarg = argv[0];
ae3f3efd
PS
1616 /*
1617 * Can we rely on the kernel to start scripts with argv[1] set to
1618 * contain all #! line switches (the whole line)? (argv[0] is set to
1619 * the interpreter name, argv[2] to the script name; argv[3] and
1620 * above may contain other arguments.)
1621 */
13281fa4 1622#endif
6224f72b
GS
1623 s = argv[0]+1;
1624 reswitch:
1625 switch (*s) {
729a02f2 1626 case 'C':
1d5472a9
GS
1627#ifndef PERL_STRICT_CR
1628 case '\r':
1629#endif
6224f72b
GS
1630 case ' ':
1631 case '0':
1632 case 'F':
1633 case 'a':
1634 case 'c':
1635 case 'd':
1636 case 'D':
1637 case 'h':
1638 case 'i':
1639 case 'l':
1640 case 'M':
1641 case 'm':
1642 case 'n':
1643 case 'p':
1644 case 's':
1645 case 'u':
1646 case 'U':
1647 case 'v':
599cee73
PM
1648 case 'W':
1649 case 'X':
6224f72b 1650 case 'w':
06492da6 1651 case 'A':
155aba94 1652 if ((s = moreswitches(s)))
6224f72b
GS
1653 goto reswitch;
1654 break;
33b78306 1655
1dbad523 1656 case 't':
22f7c9c9 1657 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1658 if( !PL_tainting ) {
1659 PL_taint_warn = TRUE;
1660 PL_tainting = TRUE;
1661 }
1662 s++;
1663 goto reswitch;
6224f72b 1664 case 'T':
22f7c9c9 1665 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1666 PL_tainting = TRUE;
317ea90d 1667 PL_taint_warn = FALSE;
6224f72b
GS
1668 s++;
1669 goto reswitch;
f86702cc 1670
bc9b29db
RH
1671 case 'E':
1672 PL_minus_E = TRUE;
1673 /* FALL THROUGH */
6224f72b 1674 case 'e':
bf4acbe4
GS
1675#ifdef MACOS_TRADITIONAL
1676 /* ignore -e for Dev:Pseudo argument */
1677 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1678 break;
bf4acbe4 1679#endif
ae3f3efd 1680 forbid_setid("-e");
3280af22 1681 if (!PL_e_script) {
396482e1 1682 PL_e_script = newSVpvs("");
0cb96387 1683 filter_add(read_e_script, NULL);
6224f72b
GS
1684 }
1685 if (*++s)
3280af22 1686 sv_catpv(PL_e_script, s);
6224f72b 1687 else if (argv[1]) {
3280af22 1688 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1689 argc--,argv++;
1690 }
1691 else
bc9b29db 1692 Perl_croak(aTHX_ "No code specified for -%c", *s);
396482e1 1693 sv_catpvs(PL_e_script, "\n");
6224f72b 1694 break;
afe37c7d 1695
20ef40cf 1696 case 'f':
f5542d3a 1697#ifdef USE_SITECUSTOMIZE
20ef40cf 1698 minus_f = TRUE;
f5542d3a 1699#endif
20ef40cf
GA
1700 s++;
1701 goto reswitch;
1702
6224f72b
GS
1703 case 'I': /* -I handled both here and in moreswitches() */
1704 forbid_setid("-I");
1705 if (!*++s && (s=argv[1]) != Nullch) {
1706 argc--,argv++;
1707 }
6224f72b 1708 if (s && *s) {
0df16ed7 1709 STRLEN len = strlen(s);
aec46f14 1710 const char * const p = savepvn(s, len);
88fe16b2 1711 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1712 sv_catpvs(sv, "-I");
0df16ed7 1713 sv_catpvn(sv, p, len);
396482e1 1714 sv_catpvs(sv, " ");
6224f72b 1715 Safefree(p);
0df16ed7
GS
1716 }
1717 else
a67e862a 1718 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1719 break;
1720 case 'P':
1721 forbid_setid("-P");
3280af22 1722 PL_preprocess = TRUE;
6224f72b
GS
1723 s++;
1724 goto reswitch;
1725 case 'S':
1726 forbid_setid("-S");
1727 dosearch = TRUE;
1728 s++;
1729 goto reswitch;
1730 case 'V':
7edfd0ef
NC
1731 {
1732 SV *opts_prog;
1733
1734 if (!PL_preambleav)
1735 PL_preambleav = newAV();
1736 av_push(PL_preambleav,
396482e1 1737 newSVpvs("use Config;"));
7edfd0ef
NC
1738 if (*++s != ':') {
1739 STRLEN opts;
1740
396482e1 1741 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1742#ifdef VMS
396482e1 1743 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1744#else
396482e1 1745 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1746#endif
7edfd0ef 1747 opts = SvCUR(opts_prog);
efcaa95b 1748
9cd7d3f2 1749 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1750# ifdef DEBUGGING
e2e4dbf1 1751 " DEBUGGING"
6224f72b 1752# endif
4f185743
NC
1753# ifdef DEBUG_LEAKING_SCALARS
1754 " DEBUG_LEAKING_SCALARS"
1755# endif
85e1fcb9 1756# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1757 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1758# endif
1759# ifdef FAKE_THREADS
e2e4dbf1 1760 " FAKE_THREADS"
85e1fcb9 1761# endif
6224f72b 1762# ifdef MULTIPLICITY
e2e4dbf1 1763 " MULTIPLICITY"
6224f72b 1764# endif
85e1fcb9 1765# ifdef MYMALLOC
e2e4dbf1 1766 " MYMALLOC"
85e1fcb9 1767# endif
3bcf5ed8
SP
1768# ifdef NO_MATHOMS
1769 " NO_MATHOMS"
1770# endif
85e1fcb9 1771# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1772 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1773# endif
1774# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1775 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1776# endif
1777# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1778 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1779# endif
1780# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1781 " PERL_IMPLICIT_SYS"
85e1fcb9
SH
1782# endif
1783# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1784 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1785# endif
1786# ifdef PERL_NEED_APPCTX
e2e4dbf1 1787 " PERL_NEED_APPCTX"
85e1fcb9
SH
1788# endif
1789# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1790 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1791# endif
1792# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1793 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1794# endif
9c0a4d5d
DM
1795# ifdef PERL_TRACK_MEMPOOL
1796 " PERL_TRACK_MEMPOOL"
1797# endif
417cd4a8
SP
1798# ifdef PERL_USE_SAFE_PUTENV
1799 " PERL_USE_SAFE_PUTENV"
1800# endif
ca0c25f6
NC
1801#ifdef PERL_USES_PL_PIDSTATUS
1802 " PERL_USES_PL_PIDSTATUS"
1803#endif
85e1fcb9 1804# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1805 " PL_OP_SLAB_ALLOC"
85e1fcb9 1806# endif
a0158404
NC
1807# ifdef SPRINTF_RETURNS_STRLEN
1808 " SPRINTF_RETURNS_STRLEN"
1809# endif
85e1fcb9 1810# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1811 " THREADS_HAVE_PIDS"
85e1fcb9 1812# endif
4d1ff10f 1813# ifdef USE_5005THREADS
e2e4dbf1 1814 " USE_5005THREADS"
b363f7ed 1815# endif
85e1fcb9 1816# ifdef USE_64_BIT_ALL
e2e4dbf1 1817 " USE_64_BIT_ALL"
ac5e8965 1818# endif
10cc9d2a 1819# ifdef USE_64_BIT_INT
e2e4dbf1 1820 " USE_64_BIT_INT"
10cc9d2a 1821# endif
85e1fcb9 1822# ifdef USE_ITHREADS
e2e4dbf1 1823 " USE_ITHREADS"
85e1fcb9
SH
1824# endif
1825# ifdef USE_LARGE_FILES
e2e4dbf1 1826 " USE_LARGE_FILES"
ac5e8965
JH
1827# endif
1828# ifdef USE_LONG_DOUBLE
e2e4dbf1 1829 " USE_LONG_DOUBLE"
ac5e8965 1830# endif
85e1fcb9 1831# ifdef USE_PERLIO
e2e4dbf1 1832 " USE_PERLIO"
53430762 1833# endif
85e1fcb9 1834# ifdef USE_REENTRANT_API
e2e4dbf1 1835 " USE_REENTRANT_API"
85e1fcb9
SH
1836# endif
1837# ifdef USE_SFIO
e2e4dbf1 1838 " USE_SFIO"
ac5e8965 1839# endif
20ef40cf 1840# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1841 " USE_SITECUSTOMIZE"
20ef40cf 1842# endif
85e1fcb9 1843# ifdef USE_SOCKS
e2e4dbf1 1844 " USE_SOCKS"
b363f7ed 1845# endif
e2e4dbf1 1846 );
efcaa95b 1847
7edfd0ef
NC
1848 while (SvCUR(opts_prog) > opts+76) {
1849 /* find last space after "options: " and before col 76
1850 */
efcaa95b 1851
7edfd0ef 1852 const char *space;
c4420975 1853 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1854 const char c = pv[opts+76];
1855 pv[opts+76] = '\0';
1856 space = strrchr(pv+opts+26, ' ');
1857 pv[opts+76] = c;
1858 if (!space) break; /* "Can't happen" */
efcaa95b 1859
7edfd0ef 1860 /* break the line before that space */
efcaa95b 1861
7edfd0ef 1862 opts = space - pv;
89529cee 1863 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1864 STR_WITH_LEN("\\n "));
7edfd0ef 1865 }
efcaa95b 1866
396482e1 1867 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1868
6224f72b 1869#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1870 if (LOCAL_PATCH_COUNT > 0) {
1871 int i;
396482e1 1872 sv_catpvs(opts_prog,
7edfd0ef
NC
1873 "\" Locally applied patches:\\n\",");
1874 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1875 if (PL_localpatches[i])
1876 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1877 0, PL_localpatches[i], 0);
1878 }
6224f72b 1879 }
6224f72b 1880#endif
7edfd0ef
NC
1881 Perl_sv_catpvf(aTHX_ opts_prog,
1882 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1883#ifdef __DATE__
1884# ifdef __TIME__
7edfd0ef
NC
1885 Perl_sv_catpvf(aTHX_ opts_prog,
1886 ",\" Compiled at %s %s\\n\"",__DATE__,
1887 __TIME__);
6224f72b 1888# else
7edfd0ef
NC
1889 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1890 __DATE__);
6224f72b
GS
1891# endif
1892#endif
396482e1 1893 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1894 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1895 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1896#ifdef __CYGWIN__
396482e1 1897 sv_catpvs(opts_prog,
7edfd0ef 1898 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1899#endif
396482e1 1900 sv_catpvs(opts_prog,
7edfd0ef
NC
1901 "print \" \\%ENV:\\n @env\\n\" if @env;"
1902 "print \" \\@INC:\\n @INC\\n\";");
1903 }
1904 else {
1905 ++s;
1906 opts_prog = Perl_newSVpvf(aTHX_
1907 "Config::config_vars(qw%c%s%c)",
1908 0, s, 0);
1909 s += strlen(s);
1910 }
1911 av_push(PL_preambleav, opts_prog);
1912 /* don't look for script or read stdin */
1913 scriptname = BIT_BUCKET;
1914 goto reswitch;
6224f72b 1915 }
6224f72b 1916 case 'x':
3280af22 1917 PL_doextract = TRUE;
6224f72b
GS
1918 s++;
1919 if (*s)
f4c556ac 1920 cddir = s;
6224f72b
GS
1921 break;
1922 case 0:
1923 break;
1924 case '-':
1925 if (!*++s || isSPACE(*s)) {
1926 argc--,argv++;
1927 goto switch_end;
1928 }
1929 /* catch use of gnu style long options */
1930 if (strEQ(s, "version")) {
dd374669 1931 s = (char *)"v";
6224f72b
GS
1932 goto reswitch;
1933 }
1934 if (strEQ(s, "help")) {
dd374669 1935 s = (char *)"h";
6224f72b
GS
1936 goto reswitch;
1937 }
1938 s--;
1939 /* FALL THROUGH */
1940 default:
cea2e8a9 1941 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1942 }
1943 }
6224f72b 1944 switch_end:
54310121 1945
f675dbe5
CB
1946 if (
1947#ifndef SECURE_INTERNAL_GETENV
1948 !PL_tainting &&
1949#endif
cf756827 1950 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1951 {
e1ec3a88 1952 const char *popt = s;
74288ac8
GS
1953 while (isSPACE(*s))
1954 s++;
317ea90d 1955 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1956 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1957 PL_tainting = TRUE;
317ea90d
MS
1958 PL_taint_warn = FALSE;
1959 }
74288ac8 1960 else {
cf756827 1961 char *popt_copy = Nullch;
74288ac8 1962 while (s && *s) {
4ea8f8fb 1963 char *d;
74288ac8
GS
1964 while (isSPACE(*s))
1965 s++;
1966 if (*s == '-') {
1967 s++;
1968 if (isSPACE(*s))
1969 continue;
1970 }
4ea8f8fb 1971 d = s;
74288ac8
GS
1972 if (!*s)
1973 break;
e4af53b0 1974 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 1975 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1976 while (++s && *s) {
1977 if (isSPACE(*s)) {
cf756827
GS
1978 if (!popt_copy) {
1979 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1980 s = popt_copy + (s - popt);
1981 d = popt_copy + (d - popt);
1982 }
4ea8f8fb
MS
1983 *s++ = '\0';
1984 break;
1985 }
1986 }
1c4db469 1987 if (*d == 't') {
317ea90d
MS
1988 if( !PL_tainting ) {
1989 PL_taint_warn = TRUE;
1990 PL_tainting = TRUE;
1991 }
1c4db469
RGS
1992 } else {
1993 moreswitches(d);
1994 }
6224f72b 1995 }
6224f72b
GS
1996 }
1997 }
a0d0e21e 1998
20ef40cf
GA
1999#ifdef USE_SITECUSTOMIZE
2000 if (!minus_f) {
2001 if (!PL_preambleav)
2002 PL_preambleav = newAV();
2003 av_unshift(PL_preambleav, 1);
2004 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
2005 }
2006#endif
2007
317ea90d
MS
2008 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
2009 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
2010 }
2011
6224f72b
GS
2012 if (!scriptname)
2013 scriptname = argv[0];
3280af22 2014 if (PL_e_script) {
6224f72b
GS
2015 argc++,argv--;
2016 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2017 }
2018 else if (scriptname == Nullch) {
2019#ifdef MSDOS
2020 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2021 moreswitches("h");
2022#endif
2023 scriptname = "-";
2024 }
2025
b7975bdd
NC
2026 /* Set $^X early so that it can be used for relocatable paths in @INC */
2027 assert (!PL_tainted);
2028 TAINT;
2029 S_set_caret_X(aTHX);
2030 TAINT_NOT;
6224f72b
GS
2031 init_perllib();
2032
c5cccb17 2033 open_script(scriptname,dosearch,sv);
6224f72b 2034
c5cccb17 2035 validate_suid(validarg, scriptname);
6224f72b 2036
64ca3a65 2037#ifndef PERL_MICRO
0b5b802d
GS
2038#if defined(SIGCHLD) || defined(SIGCLD)
2039 {
2040#ifndef SIGCHLD
2041# define SIGCHLD SIGCLD
2042#endif
2043 Sighandler_t sigstate = rsignal_state(SIGCHLD);
8aad04aa 2044 if (sigstate == (Sighandler_t) SIG_IGN) {
0b5b802d 2045 if (ckWARN(WARN_SIGNAL))
9014280d 2046 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS
2047 "Can't ignore signal CHLD, forcing to default");
2048 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2049 }
2050 }
2051#endif
64ca3a65 2052#endif
0b5b802d 2053
bf4acbe4
GS
2054#ifdef MACOS_TRADITIONAL
2055 if (PL_doextract || gMacPerl_AlwaysExtract) {
2056#else
f4c556ac 2057 if (PL_doextract) {
bf4acbe4 2058#endif
6224f72b 2059 find_beginning();
dd374669 2060 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
f4c556ac
GS
2061 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2062
2063 }
6224f72b 2064
3280af22
NIS
2065 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
2066 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2067 CvUNIQUE_on(PL_compcv);
2068
dd2155a4 2069 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 2070#ifdef USE_5005THREADS
533c011a 2071 CvOWNER(PL_compcv) = 0;
a02a5408 2072 Newx(CvMUTEXP(PL_compcv), 1, perl_mutex);
533c011a 2073 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 2074#endif /* USE_5005THREADS */
6224f72b 2075
0c4f7ff0 2076 boot_core_PerlIO();
6224f72b 2077 boot_core_UNIVERSAL();
09bef843 2078 boot_core_xsutils();
6224f72b
GS
2079
2080 if (xsinit)
acfe0abc 2081 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2082#ifndef PERL_MICRO
d0d72822 2083#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2084 init_os_extras();
6224f72b 2085#endif
64ca3a65 2086#endif
6224f72b 2087
29209bc5 2088#ifdef USE_SOCKS
1b9c9cf5
DH
2089# ifdef HAS_SOCKS5_INIT
2090 socks5_init(argv[0]);
2091# else
29209bc5 2092 SOCKSinit(argv[0]);
1b9c9cf5 2093# endif
ac27b0f5 2094#endif
29209bc5 2095
6224f72b
GS
2096 init_predump_symbols();
2097 /* init_postdump_symbols not currently designed to be called */
2098 /* more than once (ENV isn't cleared first, for example) */
2099 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2100 if (!PL_do_undump)
6224f72b
GS
2101 init_postdump_symbols(argc,argv,env);
2102
27da23d5
JH
2103 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2104 * or explicitly in some platforms.
085a54d9 2105 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2106 * look like the user wants to use UTF-8. */
a0fd4948 2107#if defined(__SYMBIAN32__)
27da23d5
JH
2108 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2109#endif
06e66572
JH
2110 if (PL_unicode) {
2111 /* Requires init_predump_symbols(). */
a05d7ebb 2112 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2113 IO* io;
2114 PerlIO* fp;
2115 SV* sv;
2116
a05d7ebb 2117 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2118 * and the default open disciplines. */
a05d7ebb
JH
2119 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2120 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2121 (fp = IoIFP(io)))
2122 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2123 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2124 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2125 (fp = IoOFP(io)))
2126 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2127 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2128 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2129 (fp = IoOFP(io)))
2130 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2131 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2132 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
2133 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2134 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2135 if (in) {
2136 if (out)
2137 sv_setpvn(sv, ":utf8\0:utf8", 11);
2138 else
2139 sv_setpvn(sv, ":utf8\0", 6);
2140 }
2141 else if (out)
2142 sv_setpvn(sv, "\0:utf8", 6);
2143 SvSETMAGIC(sv);
2144 }
b310b053
JH
2145 }
2146 }
2147
4ffa73a3
JH
2148 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2149 if (strEQ(s, "unsafe"))
2150 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2151 else if (strEQ(s, "safe"))
2152 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2153 else
2154 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2155 }
2156
6224f72b
GS
2157 init_lexer();
2158
2159 /* now parse the script */
2160
93189314 2161 SETERRNO(0,SS_NORMAL);
3280af22 2162 PL_error_count = 0;
bf4acbe4
GS
2163#ifdef MACOS_TRADITIONAL
2164 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2165 if (PL_minus_c)
2166 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2167 else {
2168 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2169 MacPerl_MPWFileName(PL_origfilename));
2170 }
2171 }
2172#else
3280af22
NIS
2173 if (yyparse() || PL_error_count) {
2174 if (PL_minus_c)
cea2e8a9 2175 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2176 else {
cea2e8a9 2177 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2178 PL_origfilename);
6224f72b
GS
2179 }
2180 }
bf4acbe4 2181#endif
57843af0 2182 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2183 PL_curstash = PL_defstash;
2184 PL_preprocess = FALSE;
2185 if (PL_e_script) {
2186 SvREFCNT_dec(PL_e_script);
2187 PL_e_script = Nullsv;
6224f72b
GS
2188 }
2189
3280af22 2190 if (PL_do_undump)
6224f72b
GS
2191 my_unexec();
2192
57843af0
GS
2193 if (isWARN_ONCE) {
2194 SAVECOPFILE(PL_curcop);
2195 SAVECOPLINE(PL_curcop);
3280af22 2196 gv_check(PL_defstash);
57843af0 2197 }
6224f72b
GS
2198
2199 LEAVE;
2200 FREETMPS;
2201
2202#ifdef MYMALLOC
2203 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2204 dump_mstats("after compilation:");
2205#endif
2206
2207 ENTER;
3280af22 2208 PL_restartop = 0;
312caa8e 2209 return NULL;
6224f72b
GS
2210}
2211
954c1994
GS
2212/*
2213=for apidoc perl_run
2214
2215Tells a Perl interpreter to run. See L<perlembed>.
2216
2217=cut
2218*/
2219
6224f72b 2220int
0cb96387 2221perl_run(pTHXx)
6224f72b 2222{
6224f72b 2223 I32 oldscope;
14dd3ad8 2224 int ret = 0;
db36c5a1 2225 dJMPENV;
6224f72b 2226
9d4ba2ae
AL
2227 PERL_UNUSED_ARG(my_perl);
2228
3280af22 2229 oldscope = PL_scopestack_ix;
96e176bf
CL
2230#ifdef VMS
2231 VMSISH_HUSHED = 0;
2232#endif
6224f72b 2233
14dd3ad8 2234 JMPENV_PUSH(ret);
6224f72b
GS
2235 switch (ret) {
2236 case 1:
2237 cxstack_ix = -1; /* start context stack again */
312caa8e 2238 goto redo_body;
14dd3ad8 2239 case 0: /* normal completion */
14dd3ad8
GS
2240 redo_body:
2241 run_body(oldscope);
14dd3ad8
GS
2242 /* FALL THROUGH */
2243 case 2: /* my_exit() */
3280af22 2244 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2245 LEAVE;
2246 FREETMPS;
3280af22 2247 PL_curstash = PL_defstash;
3a1ee7e8 2248 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2249 PL_endav && !PL_minus_c)
2250 call_list(oldscope, PL_endav);
6224f72b
GS
2251#ifdef MYMALLOC
2252 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2253 dump_mstats("after execution: ");
2254#endif
37038d91 2255 ret = STATUS_EXIT;
14dd3ad8 2256 break;
6224f72b 2257 case 3:
312caa8e
CS
2258 if (PL_restartop) {
2259 POPSTACK_TO(PL_mainstack);
2260 goto redo_body;
6224f72b 2261 }
bf49b057 2262 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2263 FREETMPS;
14dd3ad8
GS
2264 ret = 1;
2265 break;
6224f72b
GS
2266 }
2267
14dd3ad8
GS
2268 JMPENV_POP;
2269 return ret;
312caa8e
CS
2270}
2271
14dd3ad8 2272
dd374669 2273STATIC void
14dd3ad8
GS
2274S_run_body(pTHX_ I32 oldscope)
2275{
6224f72b 2276 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2277 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2278
3280af22 2279 if (!PL_restartop) {
6224f72b 2280 DEBUG_x(dump_all());
cf2782cd 2281#ifdef DEBUGGING
ecae49c0
NC
2282 if (!DEBUG_q_TEST)
2283 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2284#endif
b900a521
JH
2285 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2286 PTR2UV(thr)));
6224f72b 2287
3280af22 2288 if (PL_minus_c) {
bf4acbe4 2289#ifdef MACOS_TRADITIONAL
e69a2255
JH
2290 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2291 (gMacPerl_ErrorFormat ? "# " : ""),
2292 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2293#else
bf49b057 2294 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2295#endif
6224f72b
GS
2296 my_exit(0);
2297 }
3280af22 2298 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2299 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2300 if (PL_initav)
2301 call_list(oldscope, PL_initav);
6224f72b
GS
2302 }
2303
2304 /* do it */
2305
3280af22 2306 if (PL_restartop) {
533c011a 2307 PL_op = PL_restartop;
3280af22 2308 PL_restartop = 0;
cea2e8a9 2309 CALLRUNOPS(aTHX);
6224f72b 2310 }
3280af22
NIS
2311 else if (PL_main_start) {
2312 CvDEPTH(PL_main_cv) = 1;
533c011a 2313 PL_op = PL_main_start;
cea2e8a9 2314 CALLRUNOPS(aTHX);
6224f72b 2315 }
f6b3007c
JH
2316 my_exit(0);
2317 /* NOTREACHED */
6224f72b
GS
2318}
2319
954c1994 2320/*
ccfc67b7
JH
2321=head1 SV Manipulation Functions
2322
954c1994
GS
2323=for apidoc p||get_sv
2324
2325Returns the SV of the specified Perl scalar. If C<create> is set and the
2326Perl variable does not exist then it will be created. If C<create> is not
2327set and the variable does not exist then NULL is returned.
2328
2329=cut
2330*/
2331
6224f72b 2332SV*
864dbfa3 2333Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2334{
2335 GV *gv;
4d1ff10f 2336#ifdef USE_5005THREADS
6224f72b
GS
2337 if (name[1] == '\0' && !isALPHA(name[0])) {
2338 PADOFFSET tmp = find_threadsv(name);
411caa50 2339 if (tmp != NOT_IN_PAD)
6224f72b 2340 return THREADSV(tmp);
6224f72b 2341 }
4d1ff10f 2342#endif /* USE_5005THREADS */
6224f72b
GS
2343 gv = gv_fetchpv(name, create, SVt_PV);
2344 if (gv)
2345 return GvSV(gv);
2346 return Nullsv;
2347}
2348
954c1994 2349/*
ccfc67b7
JH
2350=head1 Array Manipulation Functions
2351
954c1994
GS
2352=for apidoc p||get_av
2353
2354Returns the AV of the specified Perl array. If C<create> is set and the
2355Perl variable does not exist then it will be created. If C<create> is not
2356set and the variable does not exist then NULL is returned.
2357
2358=cut
2359*/
2360
6224f72b 2361AV*
864dbfa3 2362Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2363{
c4420975 2364 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2365 if (create)
2366 return GvAVn(gv);
2367 if (gv)
2368 return GvAV(gv);
7d49f689 2369 return NULL;
6224f72b
GS
2370}
2371
954c1994 2372/*
ccfc67b7
JH
2373=head1 Hash Manipulation Functions
2374
954c1994
GS
2375=for apidoc p||get_hv
2376
2377Returns the HV of the specified Perl hash. If C<create> is set and the
2378Perl variable does not exist then it will be created. If C<create> is not
2379set and the variable does not exist then NULL is returned.
2380
2381=cut
2382*/
2383
6224f72b 2384HV*
864dbfa3 2385Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2386{
890ce7af 2387 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2388 if (create)
2389 return GvHVn(gv);
2390 if (gv)
2391 return GvHV(gv);
5c284bb0 2392 return NULL;
a0d0e21e
LW
2393}
2394
954c1994 2395/*
ccfc67b7
JH
2396=head1 CV Manipulation Functions
2397
954c1994
GS
2398=for apidoc p||get_cv
2399
2400Returns the CV of the specified Perl subroutine. If C<create> is set and
2401the Perl subroutine does not exist then it will be declared (which has the
2402same effect as saying C<sub name;>). If C<create> is not set and the
2403subroutine does not exist then NULL is returned.
2404
2405=cut
2406*/
2407
a0d0e21e 2408CV*
864dbfa3 2409Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2410{
c4420975 2411 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2412 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2413 /* XXX this is probably not what they think they're getting.
2414 * It has the same effect as "sub name;", i.e. just a forward
2415 * declaration! */
8ebc5c01 2416 if (create && !GvCVu(gv))
774d564b 2417 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2418 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 2419 Nullop,
a0d0e21e
LW
2420 Nullop);
2421 if (gv)
8ebc5c01 2422 return GvCVu(gv);
a0d0e21e
LW
2423 return Nullcv;
2424}
2425
79072805
LW
2426/* Be sure to refetch the stack pointer after calling these routines. */
2427
954c1994 2428/*
ccfc67b7
JH
2429
2430=head1 Callback Functions
2431
954c1994
GS
2432=for apidoc p||call_argv
2433
2434Performs a callback to the specified Perl sub. See L<perlcall>.
2435
2436=cut
2437*/
2438
a0d0e21e 2439I32
8f42b153 2440Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2441
8ac85365
NIS
2442 /* See G_* flags in cop.h */
2443 /* null terminated arg list */
8990e307 2444{
a0d0e21e 2445 dSP;
8990e307 2446
924508f0 2447 PUSHMARK(SP);
a0d0e21e 2448 if (argv) {
8990e307 2449 while (*argv) {
a0d0e21e 2450 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2451 argv++;
2452 }
a0d0e21e 2453 PUTBACK;
8990e307 2454 }
864dbfa3 2455 return call_pv(sub_name, flags);
8990e307
LW
2456}
2457
954c1994
GS
2458/*
2459=for apidoc p||call_pv
2460
2461Performs a callback to the specified Perl sub. See L<perlcall>.
2462
2463=cut
2464*/
2465
a0d0e21e 2466I32
864dbfa3 2467Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2468 /* name of the subroutine */
2469 /* See G_* flags in cop.h */
a0d0e21e 2470{
864dbfa3 2471 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2472}
2473
954c1994
GS
2474/*
2475=for apidoc p||call_method
2476
2477Performs a callback to the specified Perl method. The blessed object must
2478be on the stack. See L<perlcall>.
2479
2480=cut
2481*/
2482
a0d0e21e 2483I32
864dbfa3 2484Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2485 /* name of the subroutine */
2486 /* See G_* flags in cop.h */
a0d0e21e 2487{
968b3946 2488 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2489}
2490
2491/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2492/*
2493=for apidoc p||call_sv
2494
2495Performs a callback to the Perl sub whose name is in the SV. See
2496L<perlcall>.
2497
2498=cut
2499*/
2500
a0d0e21e 2501I32
864dbfa3 2502Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2503 /* See G_* flags in cop.h */
a0d0e21e 2504{
27da23d5 2505 dVAR; dSP;
a0d0e21e 2506 LOGOP myop; /* fake syntax tree node */
968b3946 2507 UNOP method_op;
aa689395 2508 I32 oldmark;
13689cfe 2509 volatile I32 retval = 0;
a0d0e21e 2510 I32 oldscope;
54310121 2511 bool oldcatch = CATCH_GET;
6224f72b 2512 int ret;
c4420975 2513 OP* const oldop = PL_op;
db36c5a1 2514 dJMPENV;
1e422769 2515
a0d0e21e
LW
2516 if (flags & G_DISCARD) {
2517 ENTER;
2518 SAVETMPS;
2519 }
2520
aa689395 2521 Zero(&myop, 1, LOGOP);
54310121 2522 myop.op_next = Nullop;
f51d4af5 2523 if (!(flags & G_NOARGS))
aa689395 2524 myop.op_flags |= OPf_STACKED;
54310121
PP
2525 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2526 (flags & G_ARRAY) ? OPf_WANT_LIST :
2527 OPf_WANT_SCALAR);
462e5cf6 2528 SAVEOP();
533c011a 2529 PL_op = (OP*)&myop;
aa689395 2530
3280af22
NIS
2531 EXTEND(PL_stack_sp, 1);
2532 *++PL_stack_sp = sv;
aa689395 2533 oldmark = TOPMARK;
3280af22 2534 oldscope = PL_scopestack_ix;
a0d0e21e 2535
3280af22 2536 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2537 /* Handle first BEGIN of -d. */
3280af22 2538 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2539 /* Try harder, since this may have been a sighandler, thus
2540 * curstash may be meaningless. */
3280af22 2541 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2542 && !(flags & G_NODEBUG))
533c011a 2543 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2544
968b3946
GS
2545 if (flags & G_METHOD) {
2546 Zero(&method_op, 1, UNOP);
2547 method_op.op_next = PL_op;
2548 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2549 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2550 PL_op = (OP*)&method_op;
968b3946
GS
2551 }
2552
312caa8e 2553 if (!(flags & G_EVAL)) {
0cdb2077 2554 CATCH_SET(TRUE);
14dd3ad8 2555 call_body((OP*)&myop, FALSE);
312caa8e 2556 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2557 CATCH_SET(oldcatch);
312caa8e
CS
2558 }
2559 else {
d78bda3d 2560 myop.op_other = (OP*)&myop;
3280af22 2561 PL_markstack_ptr--;
4633a7c4
LW
2562 /* we're trying to emulate pp_entertry() here */
2563 {
c09156bb 2564 register PERL_CONTEXT *cx;
f54cb97a 2565 const I32 gimme = GIMME_V;
ac27b0f5 2566
4633a7c4
LW
2567 ENTER;
2568 SAVETMPS;
ac27b0f5 2569
1d76a5c3 2570 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2571 PUSHEVAL(cx, 0, 0);
533c011a 2572 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2573
faef0170 2574 PL_in_eval = EVAL_INEVAL;
4633a7c4 2575 if (flags & G_KEEPERR)
faef0170 2576 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2577 else
c69006e4 2578 sv_setpvn(ERRSV,"",0);
4633a7c4 2579 }
3280af22 2580 PL_markstack_ptr++;
a0d0e21e 2581
14dd3ad8 2582 JMPENV_PUSH(ret);
6224f72b
GS
2583 switch (ret) {
2584 case 0:
14dd3ad8
GS
2585 redo_body:
2586 call_body((OP*)&myop, FALSE);
312caa8e
CS
2587 retval = PL_stack_sp - (PL_stack_base + oldmark);
2588 if (!(flags & G_KEEPERR))
c69006e4 2589 sv_setpvn(ERRSV,"",0);
a0d0e21e 2590 break;
6224f72b 2591 case 1:
f86702cc 2592 STATUS_ALL_FAILURE;
a0d0e21e 2593 /* FALL THROUGH */
6224f72b 2594 case 2:
a0d0e21e 2595 /* my_exit() was called */
3280af22 2596 PL_curstash = PL_defstash;
a0d0e21e 2597 FREETMPS;
14dd3ad8 2598 JMPENV_POP;
cc3604b1 2599 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2600 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2601 my_exit_jump();
a0d0e21e 2602 /* NOTREACHED */
6224f72b 2603 case 3:
3280af22 2604 if (PL_restartop) {
533c011a 2605 PL_op = PL_restartop;
3280af22 2606 PL_restartop = 0;
312caa8e 2607 goto redo_body;
a0d0e21e 2608 }
3280af22 2609 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2610 if (flags & G_ARRAY)
2611 retval = 0;
2612 else {
2613 retval = 1;
3280af22 2614 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2615 }
312caa8e 2616 break;
a0d0e21e 2617 }
a0d0e21e 2618
3280af22 2619 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2620 SV **newsp;
2621 PMOP *newpm;
2622 I32 gimme;
c09156bb 2623 register PERL_CONTEXT *cx;
a0a2876f
LW
2624 I32 optype;
2625
2626 POPBLOCK(cx,newpm);
2627 POPEVAL(cx);
3280af22 2628 PL_curpm = newpm;
a0a2876f 2629 LEAVE;
9d4ba2ae
AL
2630 PERL_UNUSED_VAR(newsp);
2631 PERL_UNUSED_VAR(gimme);
2632 PERL_UNUSED_VAR(optype);
a0d0e21e 2633 }
14dd3ad8 2634 JMPENV_POP;
a0d0e21e 2635 }
1e422769 2636
a0d0e21e 2637 if (flags & G_DISCARD) {
3280af22 2638 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2639 retval = 0;
2640 FREETMPS;
2641 LEAVE;
2642 }
533c011a 2643 PL_op = oldop;
a0d0e21e
LW
2644 return retval;
2645}
2646
312caa8e 2647STATIC void
dd374669 2648S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2649{
312caa8e
CS
2650 if (PL_op == myop) {
2651 if (is_eval)
f807eda9 2652 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2653 else
f807eda9 2654 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2655 }
2656 if (PL_op)
cea2e8a9 2657 CALLRUNOPS(aTHX);
312caa8e
CS
2658}
2659
6e72f9df 2660/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2661
954c1994
GS
2662/*
2663=for apidoc p||eval_sv
2664
2665Tells Perl to C<eval> the string in the SV.
2666
2667=cut
2668*/
2669
a0d0e21e 2670I32
864dbfa3 2671Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2672
8ac85365 2673 /* See G_* flags in cop.h */
a0d0e21e 2674{
924508f0 2675 dSP;
a0d0e21e 2676 UNOP myop; /* fake syntax tree node */
8fa7f367 2677 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2678 volatile I32 retval = 0;
6224f72b 2679 int ret;
c4420975 2680 OP* const oldop = PL_op;
db36c5a1 2681 dJMPENV;
84902520 2682
4633a7c4
LW
2683 if (flags & G_DISCARD) {
2684 ENTER;
2685 SAVETMPS;
2686 }
2687
462e5cf6 2688 SAVEOP();
533c011a
NIS
2689 PL_op = (OP*)&myop;
2690 Zero(PL_op, 1, UNOP);
3280af22
NIS
2691 EXTEND(PL_stack_sp, 1);
2692 *++PL_stack_sp = sv;
79072805 2693
4633a7c4
LW
2694 if (!(flags & G_NOARGS))
2695 myop.op_flags = OPf_STACKED;
79072805 2696 myop.op_next = Nullop;
6e72f9df 2697 myop.op_type = OP_ENTEREVAL;
54310121
PP
2698 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2699 (flags & G_ARRAY) ? OPf_WANT_LIST :
2700 OPf_WANT_SCALAR);
6e72f9df
PP
2701 if (flags & G_KEEPERR)
2702 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2703
dedbcade
DM
2704 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2705 * before a PUSHEVAL, which corrupts the stack after a croak */
2706 TAINT_PROPER("eval_sv()");
2707
14dd3ad8 2708 JMPENV_PUSH(ret);
6224f72b
GS
2709 switch (ret) {
2710 case 0:
14dd3ad8
GS
2711 redo_body:
2712 call_body((OP*)&myop,TRUE);
312caa8e
CS
2713 retval = PL_stack_sp - (PL_stack_base + oldmark);
2714 if (!(flags & G_KEEPERR))
c69006e4 2715 sv_setpvn(ERRSV,"",0);
4633a7c4 2716 break;
6224f72b 2717 case 1:
f86702cc 2718 STATUS_ALL_FAILURE;
4633a7c4 2719 /* FALL THROUGH */
6224f72b 2720 case 2:
4633a7c4 2721 /* my_exit() was called */
3280af22 2722 PL_curstash = PL_defstash;
4633a7c4 2723 FREETMPS;
14dd3ad8 2724 JMPENV_POP;
cc3604b1 2725 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2726 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2727 my_exit_jump();
4633a7c4 2728 /* NOTREACHED */
6224f72b 2729 case 3:
3280af22 2730 if (PL_restartop) {
533c011a 2731 PL_op = PL_restartop;
3280af22 2732 PL_restartop = 0;
312caa8e 2733 goto redo_body;
4633a7c4 2734 }
3280af22 2735 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2736 if (flags & G_ARRAY)
2737 retval = 0;
2738 else {
2739 retval = 1;
3280af22 2740 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2741 }
312caa8e 2742 break;
4633a7c4
LW
2743 }
2744
14dd3ad8 2745 JMPENV_POP;
4633a7c4 2746 if (flags & G_DISCARD) {
3280af22 2747 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2748 retval = 0;
2749 FREETMPS;
2750 LEAVE;
2751 }
533c011a 2752 PL_op = oldop;
4633a7c4
LW
2753 return retval;
2754}
2755
954c1994
GS
2756/*
2757=for apidoc p||eval_pv
2758
2759Tells Perl to C<eval> the given string and return an SV* result.
2760
2761=cut
2762*/
2763
137443ea 2764SV*
864dbfa3 2765Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
2766{
2767 dSP;
2768 SV* sv = newSVpv(p, 0);
2769
864dbfa3 2770 eval_sv(sv, G_SCALAR);
137443ea
PP
2771 SvREFCNT_dec(sv);
2772
2773 SPAGAIN;
2774 sv = POPs;
2775 PUTBACK;
2776
2d8e6c8d 2777 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2778 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2779 }
137443ea
PP
2780
2781 return sv;
2782}
2783
4633a7c4
LW
2784/* Require a module. */
2785
954c1994 2786/*
ccfc67b7
JH
2787=head1 Embedding Functions
2788
954c1994
GS
2789=for apidoc p||require_pv
2790
7d3fb230
BS
2791Tells Perl to C<require> the file named by the string argument. It is
2792analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2793implemented that way; consider using load_module instead.
954c1994 2794
7d3fb230 2795=cut */
954c1994 2796
4633a7c4 2797void
864dbfa3 2798Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2799{
d3acc0f7
JP
2800 SV* sv;
2801 dSP;
e788e7d3 2802 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2803 PUTBACK;
be41e5d9
NC
2804 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2805 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2806 SPAGAIN;
2807 POPSTACK;
79072805
LW
2808}
2809
79072805 2810void
e1ec3a88 2811Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2812{
c4420975 2813 register GV * const gv = gv_fetchpv(sym,TRUE, SVt_PV);
79072805 2814
c4420975 2815 if (gv)
14befaf4 2816 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2817}
2818
76e3520e 2819STATIC void
e1ec3a88 2820S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2821{
ab821d7f 2822 /* This message really ought to be max 23 lines.
75c72d73 2823 * Removed -h because the user already knows that option. Others? */
fb73857a 2824
27da23d5 2825 static const char * const usage_msg[] = {
aefc56c5
SF
2826"-0[octal] specify record separator (\\0, if no argument)",
2827"-A[mod][=pattern] activate all/given assertions",
2828"-a autosplit mode with -n or -p (splits $_ into @F)",
2829"-C[number/list] enables the listed Unicode features",
2830"-c check syntax only (runs BEGIN and CHECK blocks)",
2831"-d[:debugger] run program under debugger",
2832"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2833"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2834"-E program like -e, but enables all optional features",
aefc56c5 2835"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2836"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2837"-i[extension] edit <> files in place (makes backup if extension supplied)",
2838"-Idirectory specify @INC/#include directory (several -I's allowed)",
2839"-l[octal] enable line ending processing, specifies line terminator",
2840"-[mM][-]module execute \"use/no module...\" before executing program",
2841"-n assume \"while (<>) { ... }\" loop around program",
2842"-p assume loop like -n but print line also, like sed",
2843"-P run program through C preprocessor before compilation",
2844"-s enable rudimentary parsing for switches after programfile",
2845"-S look for programfile using PATH environment variable",
2846"-t enable tainting warnings",
2847"-T enable tainting checks",
2848"-u dump core after parsing program",
2849"-U allow unsafe operations",
2850"-v print version, subversion (includes VERY IMPORTANT perl info)",
2851"-V[:variable] print configuration summary (or a single Config.pm variable)",
2852"-w enable many useful warnings (RECOMMENDED)",
2853"-W enable all warnings",
2854"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2855"-X disable all warnings",
fb73857a
PP
2856"\n",
2857NULL
2858};
27da23d5 2859 const char * const *p = usage_msg;
fb73857a 2860
b0e47665
GS
2861 PerlIO_printf(PerlIO_stdout(),
2862 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2863 name);
fb73857a 2864 while (*p)
b0e47665 2865 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2866}
2867
b4ab917c
DM
2868/* convert a string of -D options (or digits) into an int.
2869 * sets *s to point to the char after the options */
2870
2871#ifdef DEBUGGING
2872int
e1ec3a88 2873Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2874{
27da23d5 2875 static const char * const usage_msgd[] = {
e6e64d9b
JC
2876 " Debugging flag values: (see also -d)",
2877 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2878 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2879 " l Context (loop) stack processing",
2880 " t Trace execution",
2881 " o Method and overloading resolution",
2882 " c String/numeric conversions",
2883 " P Print profiling info, preprocessor command for -P, source file input state",
2884 " m Memory allocation",
2885 " f Format processing",
2886 " r Regular expression parsing and execution",
2887 " x Syntax tree dump",
3679267a 2888 " u Tainting checks",
e6e64d9b
JC
2889 " H Hash dump -- usurps values()",
2890 " X Scratchpad allocation",
2891 " D Cleaning up",
2892 " S Thread synchronization",
2893 " T Tokenising",
2894 " R Include reference counts of dumped variables (eg when using -Ds)",
2895 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2896 " v Verbose: use in conjunction with other flags",
2897 " C Copy On Write",
2898 " A Consistency checks on internal structures",
3679267a 2899 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2900 NULL
2901 };
b4ab917c
DM
2902 int i = 0;
2903 if (isALPHA(**s)) {
2904 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2905 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2906
2907 for (; isALNUM(**s); (*s)++) {
c4420975 2908 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2909 if (d)
2910 i |= 1 << (d - debopts);
2911 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2912 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2913 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2914 }
2915 }
e6e64d9b 2916 else if (isDIGIT(**s)) {
b4ab917c
DM
2917 i = atoi(*s);
2918 for (; isALNUM(**s); (*s)++) ;
2919 }
ddcf8bc1 2920 else if (givehelp) {
06e869a4 2921 const char *const *p = usage_msgd;
e6e64d9b
JC
2922 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2923 }
b4ab917c
DM
2924# ifdef EBCDIC
2925 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2926 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2927 "-Dp not implemented on this platform\n");
2928# endif
2929 return i;
2930}
2931#endif
2932
79072805
LW
2933/* This routine handles any switches that can be given during run */
2934
2935char *
864dbfa3 2936Perl_moreswitches(pTHX_ char *s)
79072805 2937{
27da23d5 2938 dVAR;
84c133a0 2939 UV rschar;
79072805
LW
2940
2941 switch (*s) {
2942 case '0':
a863c7d1 2943 {
f2095865 2944 I32 flags = 0;
a3b680e6 2945 STRLEN numlen;
f2095865
JH
2946
2947 SvREFCNT_dec(PL_rs);
2948 if (s[1] == 'x' && s[2]) {
a3b680e6 2949 const char *e = s+=2;
f2095865
JH
2950 U8 *tmps;
2951
a3b680e6
AL
2952 while (*e)
2953 e++;
f2095865
JH
2954 numlen = e - s;
2955 flags = PERL_SCAN_SILENT_ILLDIGIT;
2956 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2957 if (s + numlen < e) {
2958 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2959 numlen = 0;
2960 s--;
2961 }
396482e1 2962 PL_rs = newSVpvs("");
c5661c80 2963 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2964 tmps = (U8*)SvPVX(PL_rs);
2965 uvchr_to_utf8(tmps, rschar);
2966 SvCUR_set(PL_rs, UNISKIP(rschar));
2967 SvUTF8_on(PL_rs);
2968 }
2969 else {
2970 numlen = 4;
2971 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2972 if (rschar & ~((U8)~0))
2973 PL_rs = &PL_sv_undef;
2974 else if (!rschar && numlen >= 2)
396482e1 2975 PL_rs = newSVpvs("");
f2095865
JH
2976 else {
2977 char ch = (char)rschar;
2978 PL_rs = newSVpvn(&ch, 1);
2979 }
2980 }
800633c3 2981 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 2982 return s + numlen;
a863c7d1 2983 }
46487f74 2984 case 'C':
a05d7ebb 2985 s++;
dd374669 2986 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 2987 return s;
2304df62 2988 case 'F':
3280af22 2989 PL_minus_F = TRUE;
ebce5377
RGS
2990 PL_splitstr = ++s;
2991 while (*s && !isSPACE(*s)) ++s;
2992 *s = '\0';
2993 PL_splitstr = savepv(PL_splitstr);
2304df62 2994 return s;
79072805 2995 case 'a':
3280af22 2996 PL_minus_a = TRUE;
79072805
LW
2997 s++;
2998 return s;
2999 case 'c':
3280af22 3000 PL_minus_c = TRUE;
79072805
LW
3001 s++;
3002 return s;
3003 case 'd':
bbce6d69 3004 forbid_setid("-d");
4633a7c4 3005 s++;
2cbb2ee1
RGS
3006
3007 /* -dt indicates to the debugger that threads will be used */
3008 if (*s == 't' && !isALNUM(s[1])) {
3009 ++s;
3010 my_setenv("PERL5DB_THREADED", "1");
3011 }
3012
70c94a19
RR
3013 /* The following permits -d:Mod to accepts arguments following an =
3014 in the fashion that -MSome::Mod does. */
3015 if (*s == ':' || *s == '=') {
06b5626a 3016 const char *start;
396482e1 3017 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3018 start = ++s;
3019 /* We now allow -d:Module=Foo,Bar */
3020 while(isALNUM(*s) || *s==':') ++s;
3021 if (*s != '=')
3022 sv_catpv(sv, start);
3023 else {
3024 sv_catpvn(sv, start, s-start);
0c5a913d 3025 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
70c94a19 3026 }
4633a7c4 3027 s += strlen(s);
184f32ec 3028 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3029 }
ed094faf 3030 if (!PL_perldb) {
3280af22 3031 PL_perldb = PERLDB_ALL;
a0d0e21e 3032 init_debugger();
ed094faf 3033 }
79072805
LW
3034 return s;
3035 case 'D':
0453d815 3036 {
79072805 3037#ifdef DEBUGGING
bbce6d69 3038 forbid_setid("-D");
b4ab917c 3039 s++;
dd374669 3040 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3041#else /* !DEBUGGING */
0453d815 3042 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3043 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3044 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3045 for (s++; isALNUM(*s); s++) ;
79072805 3046#endif
79072805 3047 return s;
0453d815 3048 }
4633a7c4 3049 case 'h':
ac27b0f5 3050 usage(PL_origargv[0]);
7ca617d0 3051 my_exit(0);
79072805 3052 case 'i':
43c5f42d 3053 Safefree(PL_inplace);
c030f24b
GH
3054#if defined(__CYGWIN__) /* do backup extension automagically */
3055 if (*(s+1) == '\0') {
c86a4f2e 3056 PL_inplace = savepvs(".bak");
c030f24b
GH
3057 return s+1;
3058 }
3059#endif /* __CYGWIN__ */
3280af22 3060 PL_inplace = savepv(s+1);
a6e20a40
AL
3061 for (s = PL_inplace; *s && !isSPACE(*s); s++)
3062 ;
7b8d334a 3063 if (*s) {
fb73857a 3064 *s++ = '\0';
7b8d334a
GS
3065 if (*s == '-') /* Additional switches on #! line. */
3066 s++;
3067 }
fb73857a 3068 return s;
4e49a025 3069 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 3070 forbid_setid("-I");
fb73857a
PP
3071 ++s;
3072 while (*s && isSPACE(*s))
3073 ++s;
3074 if (*s) {
774d564b 3075 char *e, *p;
0df16ed7
GS
3076 p = s;
3077 /* ignore trailing spaces (possibly followed by other switches) */
3078 do {
3079 for (e = p; *e && !isSPACE(*e); e++) ;
3080 p = e;
3081 while (isSPACE(*p))
3082 p++;
3083 } while (*p && *p != '-');
3084 e = savepvn(s, e-s);
88fe16b2 3085 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3086 Safefree(e);
3087 s = p;
3088 if (*s == '-')
3089 s++;
79072805
LW
3090 }
3091 else
a67e862a 3092 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3093 return s;
79072805 3094 case 'l':
3280af22 3095 PL_minus_l = TRUE;
79072805 3096 s++;
7889fe52
NIS
3097 if (PL_ors_sv) {
3098 SvREFCNT_dec(PL_ors_sv);
3099 PL_ors_sv = Nullsv;
3100 }
79072805 3101 if (isDIGIT(*s)) {
53305cf1 3102 I32 flags = 0;
a3b680e6 3103 STRLEN numlen;
396482e1 3104 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3105 numlen = 3 + (*s == '0');
3106 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3107 s += numlen;
3108 }
3109 else {
8bfdd7d9 3110 if (RsPARA(PL_rs)) {
396482e1 3111 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3112 }
3113 else {
8bfdd7d9 3114 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3115 }
79072805
LW
3116 }
3117 return s;
06492da6
SF
3118 case 'A':
3119 forbid_setid("-A");
930366bd
RGS
3120 if (!PL_preambleav)
3121 PL_preambleav = newAV();
aefc56c5
SF
3122 s++;
3123 {
44f8325f 3124 char * const start = s;
396482e1 3125 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3126 while(isALNUM(*s) || *s == ':') ++s;
3127 if (s != start) {
396482e1 3128 sv_catpvs(sv, "::");
aefc56c5
SF
3129 sv_catpvn(sv, start, s-start);
3130 }
3131 if (*s == '=') {
0c5a913d 3132 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3133 s+=strlen(s);
3134 }
3135 else if (*s != '\0') {
551405c4 3136 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3137 }
06492da6 3138 av_push(PL_preambleav, sv);
aefc56c5 3139 return s;
06492da6 3140 }
1a30305b 3141 case 'M':
bbce6d69 3142 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
3143 /* FALL THROUGH */
3144 case 'm':
bbce6d69 3145 forbid_setid("-m"); /* XXX ? */
1a30305b 3146 if (*++s) {
a5f75d66 3147 char *start;
11343788 3148 SV *sv;
e1ec3a88 3149 const char *use = "use ";
a5f75d66 3150 /* -M-foo == 'no foo' */
d0043bd1
NC
3151 /* Leading space on " no " is deliberate, to make both
3152 possibilities the same length. */
3153 if (*s == '-') { use = " no "; ++s; }
3154 sv = newSVpvn(use,4);
a5f75d66 3155 start = s;
1a30305b 3156 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3157 while(isALNUM(*s) || *s==':') ++s;
3158 if (*s != '=') {
11343788 3159 sv_catpv(sv, start);
c07a80fd
PP
3160 if (*(start-1) == 'm') {
3161 if (*s != '\0')
cea2e8a9 3162 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3163 sv_catpvs( sv, " ()");
c07a80fd
PP
3164 }
3165 } else {
6df41af2 3166 if (s == start)
be98fb35
GS
3167 Perl_croak(aTHX_ "Module name required with -%c option",
3168 s[-1]);
11343788 3169 sv_catpvn(sv, start, s-start);
396482e1
GA
3170 sv_catpvs(sv, " split(/,/,q");
3171 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3172 sv_catpv(sv, ++s);
396482e1 3173 sv_catpvs(sv, "\0)");
c07a80fd 3174 }
1a30305b 3175 s += strlen(s);
5c831c24 3176 if (!PL_preambleav)
3280af22
NIS
3177 PL_preambleav = newAV();
3178 av_push(PL_preambleav, sv);
1a30305b
PP
3179 }
3180 else
9e81e6a1 3181 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3182 return s;
79072805 3183 case 'n':
3280af22 3184 PL_minus_n = TRUE;
79072805
LW
3185 s++;
3186 return s;
3187 case 'p':
3280af22 3188 PL_minus_p = TRUE;
79072805
LW
3189 s++;
3190 return s;
3191 case 's':
bbce6d69 3192 forbid_setid("-s");
3280af22 3193 PL_doswitches = TRUE;
79072805
LW
3194 s++;
3195 return s;
6537fe72
MS
3196 case 't':
3197 if (!PL_tainting)
22f7c9c9 3198 TOO_LATE_FOR('t');
6537fe72
MS
3199 s++;
3200 return s;
463ee0b2 3201 case 'T':
3280af22 3202 if (!PL_tainting)
22f7c9c9 3203 TOO_LATE_FOR('T');
463ee0b2
LW
3204 s++;
3205 return s;
79072805 3206 case 'u':
bf4acbe4
GS
3207#ifdef MACOS_TRADITIONAL
3208 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3209#endif
3280af22 3210 PL_do_undump = TRUE;
79072805
LW
3211 s++;
3212 return s;
3213 case 'U':
3280af22 3214 PL_unsafe = TRUE;
79072805
LW
3215 s++;
3216 return s;
3217 case 'v':
d7aa5382 3218 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3219 upg_version(PL_patchlevel);
8e9464f1 3220#if !defined(DGUX)
b0e47665 3221 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3222 Perl_form(aTHX_ "\nThis is perl, %"SVf
3223#ifdef PERL_PATCHNUM
3224 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3225#endif
3226 " built for %s",
d7aa5382
JP
3227 vstringify(PL_patchlevel),
3228 ARCHNAME));
8e9464f1
JH
3229#else /* DGUX */
3230/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3231 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3232 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3233 vstringify(PL_patchlevel)));
8e9464f1
JH
3234 PerlIO_printf(PerlIO_stdout(),
3235 Perl_form(aTHX_ " built under %s at %s %s\n",
3236 OSNAME, __DATE__, __TIME__));
3237 PerlIO_printf(PerlIO_stdout(),
3238 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3239 OSVERS));
8e9464f1
JH
3240#endif /* !DGUX */
3241
fb73857a
PP
3242#if defined(LOCAL_PATCH_COUNT)
3243 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3244 PerlIO_printf(PerlIO_stdout(),
3245 "\n(with %d registered patch%s, "
3246 "see perl -V for more detail)",
3247 (int)LOCAL_PATCH_COUNT,
3248 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3249#endif
1a30305b 3250
b0e47665 3251 PerlIO_printf(PerlIO_stdout(),
3246d7a3 3252 "\n\nCopyright 1987-2006, Larry Wall\n");
eae9c151
JH
3253#ifdef MACOS_TRADITIONAL
3254 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3255 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3256 "maintained by Chris Nandor\n");
eae9c151 3257#endif
79072805 3258#ifdef MSDOS
b0e47665
GS
3259 PerlIO_printf(PerlIO_stdout(),
3260 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3261#endif
3262#ifdef DJGPP
b0e47665
GS
3263 PerlIO_printf(PerlIO_stdout(),
3264 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3265 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3266#endif
79072805 3267#ifdef OS2
b0e47665
GS
3268 PerlIO_printf(PerlIO_stdout(),
3269 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3270 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3271#endif
79072805 3272#ifdef atarist
b0e47665
GS
3273 PerlIO_printf(PerlIO_stdout(),
3274 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3275#endif
a3f9223b 3276#ifdef __BEOS__
b0e47665
GS
3277 PerlIO_printf(PerlIO_stdout(),
3278 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3279#endif
1d84e8df 3280#ifdef MPE
b0e47665 3281 PerlIO_printf(PerlIO_stdout(),
e583a879 3282 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3283#endif
9d116dd7 3284#ifdef OEMVS
b0e47665
GS
3285 PerlIO_printf(PerlIO_stdout(),
3286 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3287#endif
495c5fdc 3288#ifdef __VOS__
b0e47665 3289 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3290 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3291#endif
092bebab 3292#ifdef __OPEN_VM
b0e47665
GS
3293 PerlIO_printf(PerlIO_stdout(),
3294 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3295#endif
a1a0e61e 3296#ifdef POSIX_BC
b0e47665
GS
3297 PerlIO_printf(PerlIO_stdout(),
3298 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3299#endif
61ae2fbf 3300#ifdef __MINT__
b0e47665
GS
3301 PerlIO_printf(PerlIO_stdout(),
3302 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3303#endif
f83d2536 3304#ifdef EPOC
b0e47665 3305 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3306 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3307#endif
e1caacb4 3308#ifdef UNDER_CE
b475b3e6
JH
3309 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3310 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3311 wce_hitreturn();
3312#endif
a0fd4948 3313#ifdef __SYMBIAN32__
27da23d5
JH
3314 PerlIO_printf(PerlIO_stdout(),
3315 "Symbian port by Nokia, 2004-2005\n");
3316#endif
baed7233
DL
3317#ifdef BINARY_BUILD_NOTICE
3318 BINARY_BUILD_NOTICE;
3319#endif
b0e47665
GS
3320 PerlIO_printf(PerlIO_stdout(),
3321 "\n\
79072805 3322Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3323GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3324Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3325this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3326Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3327 my_exit(0);
79072805 3328 case 'w':
599cee73 3329 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3330 PL_dowarn |= G_WARN_ON;
599cee73
PM
3331 s++;
3332 return s;
3333 case 'W':
ac27b0f5 3334 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3335 if (!specialWARN(PL_compiling.cop_warnings))
3336 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3337 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3338 s++;
3339 return s;
3340 case 'X':
ac27b0f5 3341 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3342 if (!specialWARN(PL_compiling.cop_warnings))
3343 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3344 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3345 s++;
3346 return s;
a0d0e21e 3347 case '*':
79072805
LW
3348 case ' ':
3349 if (s[1] == '-') /* Additional switches on #! line. */
3350 return s+2;
3351 break;
a0d0e21e 3352 case '-':
79072805 3353 case 0:
51882d45 3354#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3355 case '\r':
3356#endif
79072805
LW
3357 case '\n':
3358 case '\t':
3359 break;
aa689395
PP
3360#ifdef ALTERNATE_SHEBANG
3361 case 'S': /* OS/2 needs -S on "extproc" line. */
3362 break;
3363#endif
a0d0e21e 3364 case 'P':
3280af22 3365 if (PL_preprocess)
a0d0e21e
LW
3366 return s+1;
3367 /* FALL THROUGH */
79072805 3368 default:
cea2e8a9 3369 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
3370 }
3371 return Nullch;
3372}
3373
3374/* compliments of Tom Christiansen */
3375
3376/* unexec() can be found in the Gnu emacs distribution */
ee580363 3377/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3378
3379void
864dbfa3 3380Perl_my_unexec(pTHX)
79072805
LW
3381{
3382#ifdef UNEXEC
46fc3d4c
PP
3383 SV* prog;
3384 SV* file;
ee580363 3385 int status = 1;
79072805
LW
3386 extern int etext;
3387
ee580363 3388 prog = newSVpv(BIN_EXP, 0);
396482e1 3389 sv_catpvs(prog, "/perl");
6b88bc9c 3390 file = newSVpv(PL_origfilename, 0);
396482e1 3391 sv_catpvs(file, ".perldump");
79072805 3392
ee580363
GS
3393 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3394 /* unexec prints msg to stderr in case of failure */
6ad3d225 3395 PerlProc_exit(status);
79072805 3396#else
a5f75d66
AD
3397# ifdef VMS
3398# include <lib$routines.h>
3399 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 3400# else
79072805 3401 ABORT(); /* for use with undump */
aa689395 3402# endif
a5f75d66 3403#endif
79072805
LW
3404}
3405
cb68f92d
GS
3406/* initialize curinterp */
3407STATIC void
cea2e8a9 3408S_init_interp(pTHX)
cb68f92d
GS
3409{
3410
acfe0abc
GS
3411#ifdef MULTIPLICITY
3412# define PERLVAR(var,type)
3413# define PERLVARA(var,n,type)
3414# if defined(PERL_IMPLICIT_CONTEXT)
3415# if defined(USE_5005THREADS)
3416# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
27da23d5 3417# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
3418# else /* !USE_5005THREADS */
3419# define PERLVARI(var,type,init) aTHX->var = init;
3420# define PERLVARIC(var,type,init) aTHX->var = init;
3421# endif /* USE_5005THREADS */
3967c732 3422# else
acfe0abc
GS
3423# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3424# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3425# endif
acfe0abc
GS
3426# include "intrpvar.h"
3427# ifndef USE_5005THREADS
3428# include "thrdvar.h"
3429# endif
3430# undef PERLVAR
3431# undef PERLVARA
3432# undef PERLVARI
3433# undef PERLVARIC
3434#else
3435# define PERLVAR(var,type)
3436# define PERLVARA(var,n,type)
3437# define PERLVARI(var,type,init) PL_##var = init;
3438# define PERLVARIC(var,type,init) PL_##var = init;
3439# include "intrpvar.h"
3440# ifndef USE_5005THREADS
3441# include "thrdvar.h"
3442# endif
3443# undef PERLVAR
3444# undef PERLVARA
3445# undef PERLVARI
3446# undef PERLVARIC
cb68f92d
GS
3447#endif
3448
cb68f92d
GS
3449}
3450
76e3520e 3451STATIC void
cea2e8a9 3452S_init_main_stash(pTHX)
79072805 3453{
463ee0b2 3454 GV *gv;
6e72f9df 3455
3280af22 3456 PL_curstash = PL_defstash = newHV();
23579a14
NC
3457 /* We know that the string "main" will be in the global shared string
3458 table, so it's a small saving to use it rather than allocate another
3459 8 bytes. */
18916d0d 3460 PL_curstname = newSVpvs_share("main");
adbc6bb1 3461 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
23579a14
NC
3462 /* If we hadn't caused another reference to "main" to be in the shared
3463 string table above, then it would be worth reordering these two,
3464 because otherwise all we do is delete "main" from it as a consequence
3465 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3466 SvREFCNT_dec(GvHV(gv));
23579a14 3467 hv_name_set(PL_defstash, "main", 4, 0);
3280af22 3468 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3469 SvREADONLY_on(gv);
3280af22 3470 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
5fd80ba5 3471 SvREFCNT_inc(PL_incgv); /* Don't allow it to be freed */
3280af22
NIS
3472 GvMULTI_on(PL_incgv);
3473 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
3474 GvMULTI_on(PL_hintgv);
3475 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
5fd80ba5 3476 SvREFCNT_inc(PL_defgv);
3280af22 3477 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
5fd80ba5 3478 SvREFCNT_inc(PL_errgv);
3280af22
NIS
3479 GvMULTI_on(PL_errgv);
3480 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
3481 GvMULTI_on(PL_replgv);
cea2e8a9 3482 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3483#ifdef PERL_DONT_CREATE_GVSV
3484 gv_SVadd(PL_errgv);
3485#endif
38a03e6e
MB
3486 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3487 sv_setpvn(ERRSV, "", 0);
3280af22 3488 PL_curstash = PL_defstash;
11faa288 3489 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 3490 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 3491 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 3492 /* We must init $/ before switches are processed. */
864dbfa3 3493 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
3494}
3495
ae3f3efd 3496/* PSz 18 Nov 03 fdscript now global but do not change prototype */
76e3520e 3497STATIC void
dd374669 3498S_open_script(pTHX_ const char *scriptname, bool dosearch, SV *sv)
79072805 3499{
ae3f3efd 3500#ifndef IAMSUID
e1ec3a88
AL
3501 const char *quote;
3502 const char *code;
3503 const char *cpp_discard_flag;
3504 const char *perl;
ae3f3efd 3505#endif
27da23d5 3506 dVAR;
1b24ed4b 3507
ae3f3efd
PS
3508 PL_fdscript = -1;
3509 PL_suidscript = -1;
79072805 3510
3280af22 3511 if (PL_e_script) {
89529cee 3512 PL_origfilename = savepvs("-e");
96436eeb 3513 }
6c4ab083
GS
3514 else {
3515 /* if find_script() returns, it returns a malloc()-ed value */
dd374669 3516 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
3517
3518 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
e1ec3a88 3519 const char *s = scriptname + 8;
ae3f3efd 3520 PL_fdscript = atoi(s);
6c4ab083
GS
3521 while (isDIGIT(*s))
3522 s++;
3523 if (*s) {
ae3f3efd
PS
3524 /* PSz 18 Feb 04
3525 * Tell apart "normal" usage of fdscript, e.g.
3526 * with bash on FreeBSD: