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Oops. Didn't mean to commit 27426 to maint first. Integrate it:
[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 *
352d5a3a
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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
e6827a76 140static void
daa7d858 141S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 142{
27da23d5 143 dVAR;
e6827a76
NC
144 if (!PL_curinterp) {
145 PERL_SET_INTERP(my_perl);
3db8f154 146#if defined(USE_ITHREADS)
e6827a76
NC
147 INIT_THREADS;
148 ALLOC_THREAD_KEY;
149 PERL_SET_THX(my_perl);
150 OP_REFCNT_INIT;
151 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 152# endif
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153#ifdef PERL_IMPLICIT_CONTEXT
154 MUTEX_INIT(&PL_my_ctx_mutex);
155# endif
e6827a76
NC
156 }
157 else {
158 PERL_SET_THX(my_perl);
159 }
160}
06d86050 161
32e30700
GS
162#ifdef PERL_IMPLICIT_SYS
163PerlInterpreter *
7766f137
GS
164perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
165 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
166 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
167 struct IPerlDir* ipD, struct IPerlSock* ipS,
168 struct IPerlProc* ipP)
169{
170 PerlInterpreter *my_perl;
9f653bb5 171 /* Newx() needs interpreter, so call malloc() instead */
32e30700 172 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 173 S_init_tls_and_interp(my_perl);
32e30700
GS
174 Zero(my_perl, 1, PerlInterpreter);
175 PL_Mem = ipM;
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176 PL_MemShared = ipMS;
177 PL_MemParse = ipMP;
32e30700
GS
178 PL_Env = ipE;
179 PL_StdIO = ipStd;
180 PL_LIO = ipLIO;
181 PL_Dir = ipD;
182 PL_Sock = ipS;
183 PL_Proc = ipP;
7cb608b5 184 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 185
32e30700
GS
186 return my_perl;
187}
188#else
954c1994
GS
189
190/*
ccfc67b7
JH
191=head1 Embedding Functions
192
954c1994
GS
193=for apidoc perl_alloc
194
195Allocates a new Perl interpreter. See L<perlembed>.
196
197=cut
198*/
199
93a17b20 200PerlInterpreter *
cea2e8a9 201perl_alloc(void)
79072805 202{
cea2e8a9 203 PerlInterpreter *my_perl;
79072805 204
9f653bb5 205 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 206 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 207
e6827a76 208 S_init_tls_and_interp(my_perl);
7cb608b5 209#ifndef PERL_TRACK_MEMPOOL
07409e01 210 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
211#else
212 Zero(my_perl, 1, PerlInterpreter);
213 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
214 return my_perl;
215#endif
79072805 216}
32e30700 217#endif /* PERL_IMPLICIT_SYS */
79072805 218
954c1994
GS
219/*
220=for apidoc perl_construct
221
222Initializes a new Perl interpreter. See L<perlembed>.
223
224=cut
225*/
226
79072805 227void
0cb96387 228perl_construct(pTHXx)
79072805 229{
27da23d5 230 dVAR;
96a5add6 231 PERL_UNUSED_CONTEXT;
8990e307 232#ifdef MULTIPLICITY
54aff467 233 init_interp();
ac27b0f5 234 PL_perl_destruct_level = 1;
54aff467
GS
235#else
236 if (PL_perl_destruct_level > 0)
237 init_interp();
238#endif
33f46ff6 239 /* Init the real globals (and main thread)? */
3280af22 240 if (!PL_linestr) {
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241 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
242
561b68a9 243 PL_linestr = newSV(79);
3280af22 244 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 245
3280af22 246 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP
247 /* set read-only and try to insure than we wont see REFCNT==0
248 very often */
249
3280af22
NIS
250 SvREADONLY_on(&PL_sv_undef);
251 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 252
3280af22 253 sv_setpv(&PL_sv_no,PL_No);
0309f36e
NC
254 /* value lookup in void context - happens to have the side effect
255 of caching the numeric forms. */
256 SvIV(&PL_sv_no);
3280af22
NIS
257 SvNV(&PL_sv_no);
258 SvREADONLY_on(&PL_sv_no);
259 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 260
3280af22 261 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 262 SvIV(&PL_sv_yes);
3280af22
NIS
263 SvNV(&PL_sv_yes);
264 SvREADONLY_on(&PL_sv_yes);
265 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7996736c
MHM
266
267 SvREADONLY_on(&PL_sv_placeholder);
268 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 269 }
79072805 270
8aad04aa 271 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 272#ifdef PERL_USES_PL_PIDSTATUS
3280af22 273 PL_pidstatus = newHV();
ca0c25f6 274#endif
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275 }
276
396482e1 277 PL_rs = newSVpvs("\n");
dc92893f 278
cea2e8a9 279 init_stacks();
79072805 280
748a9306 281 init_ids();
3280af22 282 PL_lex_state = LEX_NOTPARSING;
a5f75d66 283
312caa8e 284 JMPENV_BOOTSTRAP;
f86702cc
PP
285 STATUS_ALL_SUCCESS;
286
0672f40e 287 init_i18nl10n(1);
36477c24 288 SET_NUMERIC_STANDARD();
0b5b802d 289
ab821d7f 290#if defined(LOCAL_PATCH_COUNT)
3280af22 291 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
292#endif
293
52853b95
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294#ifdef HAVE_INTERP_INTERN
295 sys_intern_init();
296#endif
297
3a1ee7e8 298 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 299
3280af22
NIS
300 PL_fdpid = newAV(); /* for remembering popen pids by fd */
301 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 302 PL_errors = newSVpvs("");
48c6b404 303 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
304 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
305 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 306#ifdef USE_ITHREADS
13137afc
AB
307 PL_regex_padav = newAV();
308 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
309 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 310#endif
e5dd39fc 311#ifdef USE_REENTRANT_API
59bd0823 312 Perl_reentrant_init(aTHX);
e5dd39fc 313#endif
3d47000e
AB
314
315 /* Note that strtab is a rather special HV. Assumptions are made
316 about not iterating on it, and not adding tie magic to it.
317 It is properly deallocated in perl_destruct() */
318 PL_strtab = newHV();
319
3d47000e
AB
320 HvSHAREKEYS_off(PL_strtab); /* mandatory */
321 hv_ksplit(PL_strtab, 512);
322
0631ea03
AB
323#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
324 _dyld_lookup_and_bind
325 ("__environ", (unsigned long *) &environ_pointer, NULL);
326#endif /* environ */
327
2f42fcb0
JH
328#ifndef PERL_MICRO
329# ifdef USE_ENVIRON_ARRAY
0631ea03 330 PL_origenviron = environ;
2f42fcb0 331# endif
0631ea03
AB
332#endif
333
5311654c 334 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 335 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
336 * BeOS has those, but returns the wrong value.
337 * The HZ if not originally defined has been by now
338 * been defined as CLK_TCK, if available. */
dbc1d986 339#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
340 PL_clocktick = sysconf(_SC_CLK_TCK);
341 if (PL_clocktick <= 0)
342#endif
343 PL_clocktick = HZ;
344
081fc587
AB
345 PL_stashcache = newHV();
346
e6830b13
NC
347 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
348 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 349
27da23d5
JH
350#ifdef HAS_MMAP
351 if (!PL_mmap_page_size) {
352#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
353 {
354 SETERRNO(0, SS_NORMAL);
355# ifdef _SC_PAGESIZE
356 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
357# else
358 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
359# endif
360 if ((long) PL_mmap_page_size < 0) {
361 if (errno) {
44f8325f 362 SV * const error = ERRSV;
27da23d5 363 (void) SvUPGRADE(error, SVt_PV);
0510663f 364 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
365 }
366 else
367 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
368 }
369 }
370#else
371# ifdef HAS_GETPAGESIZE
372 PL_mmap_page_size = getpagesize();
373# else
374# if defined(I_SYS_PARAM) && defined(PAGESIZE)
375 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
376# endif
377# endif
378#endif
379 if (PL_mmap_page_size <= 0)
380 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
381 (IV) PL_mmap_page_size);
382 }
383#endif /* HAS_MMAP */
384
385#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
386 PL_timesbase.tms_utime = 0;
387 PL_timesbase.tms_stime = 0;
388 PL_timesbase.tms_cutime = 0;
389 PL_timesbase.tms_cstime = 0;
390#endif
391
8990e307 392 ENTER;
79072805
LW
393}
394
954c1994 395/*
62375a60
NIS
396=for apidoc nothreadhook
397
398Stub that provides thread hook for perl_destruct when there are
399no threads.
400
401=cut
402*/
403
404int
4e9e3734 405Perl_nothreadhook(pTHX)
62375a60 406{
96a5add6 407 PERL_UNUSED_CONTEXT;
62375a60
NIS
408 return 0;
409}
410
41e4abd8
NC
411#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
412void
413Perl_dump_sv_child(pTHX_ SV *sv)
414{
415 ssize_t got;
bf357333
NC
416 const int sock = PL_dumper_fd;
417 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
418 union control_un control;
419 struct msghdr msg;
808ad2d0 420 struct iovec vec[2];
bf357333 421 struct cmsghdr *cmptr;
808ad2d0
NC
422 int returned_errno;
423 unsigned char buffer[256];
41e4abd8 424
bf357333 425 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
426 return;
427
428 PerlIO_flush(Perl_debug_log);
429
bf357333
NC
430 /* All these shenanigans are to pass a file descriptor over to our child for
431 it to dump out to. We can't let it hold open the file descriptor when it
432 forks, as the file descriptor it will dump to can turn out to be one end
433 of pipe that some other process will wait on for EOF. (So as it would
434 be open, the wait would be forever. */
435
436 msg.msg_control = control.control;
437 msg.msg_controllen = sizeof(control.control);
438 /* We're a connected socket so we don't need a destination */
439 msg.msg_name = NULL;
440 msg.msg_namelen = 0;
441 msg.msg_iov = vec;
808ad2d0 442 msg.msg_iovlen = 1;
bf357333
NC
443
444 cmptr = CMSG_FIRSTHDR(&msg);
445 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
446 cmptr->cmsg_level = SOL_SOCKET;
447 cmptr->cmsg_type = SCM_RIGHTS;
448 *((int *)CMSG_DATA(cmptr)) = 1;
449
450 vec[0].iov_base = (void*)&sv;
451 vec[0].iov_len = sizeof(sv);
452 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
453
454 if(got < 0) {
bf357333 455 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
456 abort();
457 }
bf357333
NC
458 if(got < sizeof(sv)) {
459 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
460 abort();
461 }
462
808ad2d0
NC
463 /* Return protocol is
464 int: errno value
465 unsigned char: length of location string (0 for empty)
466 unsigned char*: string (not terminated)
467 */
468 vec[0].iov_base = (void*)&returned_errno;
469 vec[0].iov_len = sizeof(returned_errno);
470 vec[1].iov_base = buffer;
471 vec[1].iov_len = 1;
472
473 got = readv(sock, vec, 2);
41e4abd8
NC
474
475 if(got < 0) {
476 perror("Debug leaking scalars parent read failed");
808ad2d0 477 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
478 abort();
479 }
808ad2d0 480 if(got < sizeof(returned_errno) + 1) {
41e4abd8 481 perror("Debug leaking scalars parent short read");
808ad2d0 482 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
483 abort();
484 }
485
808ad2d0
NC
486 if (*buffer) {
487 got = read(sock, buffer + 1, *buffer);
488 if(got < 0) {
489 perror("Debug leaking scalars parent read 2 failed");
490 PerlIO_flush(PerlIO_stderr());
491 abort();
492 }
493
494 if(got < *buffer) {
495 perror("Debug leaking scalars parent short read 2");
496 PerlIO_flush(PerlIO_stderr());
497 abort();
498 }
499 }
500
501 if (returned_errno || *buffer) {
502 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
503 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
504 returned_errno, strerror(returned_errno));
41e4abd8
NC
505 }
506}
507#endif
508
62375a60 509/*
954c1994
GS
510=for apidoc perl_destruct
511
512Shuts down a Perl interpreter. See L<perlembed>.
513
514=cut
515*/
516
31d77e54 517int
0cb96387 518perl_destruct(pTHXx)
79072805 519{
27da23d5 520 dVAR;
7c474504 521 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 522 HV *hv;
2aa47728 523#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
524 pid_t child;
525#endif
8990e307 526
96a5add6 527 PERL_UNUSED_CONTEXT;
9d4ba2ae 528
7766f137
GS
529 /* wait for all pseudo-forked children to finish */
530 PERL_WAIT_FOR_CHILDREN;
531
3280af22 532 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
533#ifdef DEBUGGING
534 {
9d4ba2ae
AL
535 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
536 if (s) {
e1ec3a88 537 const int i = atoi(s);
5f05dabc
PP
538 if (destruct_level < i)
539 destruct_level = i;
540 }
4633a7c4
LW
541 }
542#endif
543
27da23d5 544 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
545 dJMPENV;
546 int x = 0;
547
548 JMPENV_PUSH(x);
1b6737cc 549 PERL_UNUSED_VAR(x);
f3faeb53
AB
550 if (PL_endav && !PL_minus_c)
551 call_list(PL_scopestack_ix, PL_endav);
552 JMPENV_POP;
26f423df 553 }
f3faeb53 554 LEAVE;
a0d0e21e
LW
555 FREETMPS;
556
e00b64d4 557 /* Need to flush since END blocks can produce output */
f13a2bc0 558 my_fflush_all();
e00b64d4 559
62375a60
NIS
560 if (CALL_FPTR(PL_threadhook)(aTHX)) {
561 /* Threads hook has vetoed further cleanup */
37038d91 562 return STATUS_EXIT;
62375a60
NIS
563 }
564
2aa47728
NC
565#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
566 if (destruct_level != 0) {
567 /* Fork here to create a child. Our child's job is to preserve the
568 state of scalars prior to destruction, so that we can instruct it
569 to dump any scalars that we later find have leaked.
570 There's no subtlety in this code - it assumes POSIX, and it doesn't
571 fail gracefully */
572 int fd[2];
573
574 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
575 perror("Debug leaking scalars socketpair failed");
576 abort();
577 }
578
579 child = fork();
580 if(child == -1) {
581 perror("Debug leaking scalars fork failed");
582 abort();
583 }
584 if (!child) {
585 /* We are the child */
3125a5a4
NC
586 const int sock = fd[1];
587 const int debug_fd = PerlIO_fileno(Perl_debug_log);
588 int f;
808ad2d0
NC
589 const char *where;
590 /* Our success message is an integer 0, and a char 0 */
591 static const char success[sizeof(int) + 1];
3125a5a4 592
2aa47728 593 close(fd[0]);
2aa47728 594
3125a5a4
NC
595 /* We need to close all other file descriptors otherwise we end up
596 with interesting hangs, where the parent closes its end of a
597 pipe, and sits waiting for (another) child to terminate. Only
598 that child never terminates, because it never gets EOF, because
bf357333
NC
599 we also have the far end of the pipe open. We even need to
600 close the debugging fd, because sometimes it happens to be one
601 end of a pipe, and a process is waiting on the other end for
602 EOF. Normally it would be closed at some point earlier in
603 destruction, but if we happen to cause the pipe to remain open,
604 EOF never occurs, and we get an infinite hang. Hence all the
605 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
606
607 f = sysconf(_SC_OPEN_MAX);
608 if(f < 0) {
808ad2d0
NC
609 where = "sysconf failed";
610 goto abort;
3125a5a4
NC
611 }
612 while (f--) {
613 if (f == sock)
614 continue;
3125a5a4
NC
615 close(f);
616 }
617
2aa47728
NC
618 while (1) {
619 SV *target;
bf357333
NC
620 union control_un control;
621 struct msghdr msg;
622 struct iovec vec[1];
623 struct cmsghdr *cmptr;
624 ssize_t got;
625 int got_fd;
626
627 msg.msg_control = control.control;
628 msg.msg_controllen = sizeof(control.control);
629 /* We're a connected socket so we don't need a source */
630 msg.msg_name = NULL;
631 msg.msg_namelen = 0;
632 msg.msg_iov = vec;
633 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
634
635 vec[0].iov_base = (void*)&target;
636 vec[0].iov_len = sizeof(target);
637
638 got = recvmsg(sock, &msg, 0);
2aa47728
NC
639
640 if(got == 0)
641 break;
642 if(got < 0) {
808ad2d0
NC
643 where = "recv failed";
644 goto abort;
2aa47728
NC
645 }
646 if(got < sizeof(target)) {
808ad2d0
NC
647 where = "short recv";
648 goto abort;
2aa47728 649 }
bf357333 650
808ad2d0
NC
651 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
652 where = "no cmsg";
653 goto abort;
654 }
655 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
656 where = "wrong cmsg_len";
657 goto abort;
658 }
659 if(cmptr->cmsg_level != SOL_SOCKET) {
660 where = "wrong cmsg_level";
661 goto abort;
662 }
663 if(cmptr->cmsg_type != SCM_RIGHTS) {
664 where = "wrong cmsg_type";
665 goto abort;
666 }
bf357333
NC
667
668 got_fd = *(int*)CMSG_DATA(cmptr);
669 /* For our last little bit of trickery, put the file descriptor
670 back into Perl_debug_log, as if we never actually closed it
671 */
808ad2d0
NC
672 if(got_fd != debug_fd) {
673 if (dup2(got_fd, debug_fd) == -1) {
674 where = "dup2";
675 goto abort;
676 }
677 }
2aa47728 678 sv_dump(target);
bf357333 679
2aa47728
NC
680 PerlIO_flush(Perl_debug_log);
681
808ad2d0 682 got = write(sock, &success, sizeof(success));
2aa47728
NC
683
684 if(got < 0) {
808ad2d0
NC
685 where = "write failed";
686 goto abort;
2aa47728 687 }
808ad2d0
NC
688 if(got < sizeof(success)) {
689 where = "short write";
690 goto abort;
2aa47728
NC
691 }
692 }
693 _exit(0);
808ad2d0
NC
694 abort:
695 {
696 int send_errno = errno;
697 unsigned char length = (unsigned char) strlen(where);
698 struct iovec failure[3] = {
699 {(void*)&send_errno, sizeof(send_errno)},
700 {&length, 1},
701 {(void*)where, length}
702 };
703 int got = writev(sock, failure, 3);
704 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
705 in the parent if we try to read from the socketpair after the
706 child has exited, even if there was data to read.
707 So sleep a bit to give the parent a fighting chance of
708 reading the data. */
709 sleep(2);
710 _exit((got == -1) ? errno : 0);
711 }
bf357333 712 /* End of child. */
2aa47728 713 }
41e4abd8 714 PL_dumper_fd = fd[0];
2aa47728
NC
715 close(fd[1]);
716 }
717#endif
718
ff0cee69
PP
719 /* We must account for everything. */
720
721 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
722 /* Do this now, because destroying ops can cause new SVs to be generated
723 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
724 PL_curcop to point to a valid op from which the filename structure
725 member is copied. */
726 PL_curcop = &PL_compiling;
3280af22 727 if (PL_main_root) {
4e380990
DM
728 /* ensure comppad/curpad to refer to main's pad */
729 if (CvPADLIST(PL_main_cv)) {
730 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
731 }
3280af22 732 op_free(PL_main_root);
5f66b61c 733 PL_main_root = NULL;
a0d0e21e 734 }
5f66b61c 735 PL_main_start = NULL;
3280af22 736 SvREFCNT_dec(PL_main_cv);
601f1833 737 PL_main_cv = NULL;
24d3c518 738 PL_dirty = TRUE;
ff0cee69 739
13621cfb
NIS
740 /* Tell PerlIO we are about to tear things apart in case
741 we have layers which are using resources that should
742 be cleaned up now.
743 */
744
745 PerlIO_destruct(aTHX);
746
3280af22 747 if (PL_sv_objcount) {
a0d0e21e
LW
748 /*
749 * Try to destruct global references. We do this first so that the
750 * destructors and destructees still exist. Some sv's might remain.
751 * Non-referenced objects are on their own.
752 */
a0d0e21e 753 sv_clean_objs();
bf9cdc68 754 PL_sv_objcount = 0;
a0de6cf5 755 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 756 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
757 }
758
5cd24f17 759 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 760 SvREFCNT_dec(PL_warnhook);
a0714e2c 761 PL_warnhook = NULL;
3280af22 762 SvREFCNT_dec(PL_diehook);
a0714e2c 763 PL_diehook = NULL;
5cd24f17 764
4b556e6c 765 /* call exit list functions */
3280af22 766 while (PL_exitlistlen-- > 0)
acfe0abc 767 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 768
3280af22 769 Safefree(PL_exitlist);
4b556e6c 770
1c4916e5
CB
771 PL_exitlist = NULL;
772 PL_exitlistlen = 0;
773
a0d0e21e 774 if (destruct_level == 0){
8990e307 775
a0d0e21e 776 DEBUG_P(debprofdump());
ac27b0f5 777
56a2bab7
NIS
778#if defined(PERLIO_LAYERS)
779 /* No more IO - including error messages ! */
780 PerlIO_cleanup(aTHX);
781#endif
782
a0d0e21e 783 /* The exit() function will do everything that needs doing. */
37038d91 784 return STATUS_EXIT;
a0d0e21e 785 }
5dd60ef7 786
551a8b83 787 /* jettison our possibly duplicated environment */
4b647fb0
DM
788 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
789 * so we certainly shouldn't free it here
790 */
2f42fcb0 791#ifndef PERL_MICRO
4b647fb0 792#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 793 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
794#ifdef USE_ITHREADS
795 /* only main thread can free environ[0] contents */
796 && PL_curinterp == aTHX
797#endif
798 )
799 {
551a8b83
JH
800 I32 i;
801
802 for (i = 0; environ[i]; i++)
4b420006 803 safesysfree(environ[i]);
0631ea03 804
4b420006
JH
805 /* Must use safesysfree() when working with environ. */
806 safesysfree(environ);
551a8b83
JH
807
808 environ = PL_origenviron;
809 }
810#endif
2f42fcb0 811#endif /* !PERL_MICRO */
551a8b83 812
804ffa60 813 /* reset so print() ends up where we expect */
a0714e2c 814 setdefout(NULL);
804ffa60 815
5f8cb046
DM
816#ifdef USE_ITHREADS
817 /* the syntax tree is shared between clones
818 * so op_free(PL_main_root) only ReREFCNT_dec's
819 * REGEXPs in the parent interpreter
820 * we need to manually ReREFCNT_dec for the clones
821 */
822 {
823 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 824 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
825
826 while (i) {
c4420975 827 SV * const resv = ary[--i];
35061a7e
DM
828
829 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 830 /* this is PL_reg_curpm, already freed
35061a7e
DM
831 * flag is set in regexec.c:S_regtry
832 */
833 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 834 }
1cc8b4c5
AB
835 else if(SvREPADTMP(resv)) {
836 SvREPADTMP_off(resv);
837 }
a560f29b
NC
838 else if(SvIOKp(resv)) {
839 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
840 ReREFCNT_dec(re);
841 }
842 }
843 }
844 SvREFCNT_dec(PL_regex_padav);
7d49f689 845 PL_regex_padav = NULL;
5f8cb046
DM
846 PL_regex_pad = NULL;
847#endif
848
081fc587
AB
849 SvREFCNT_dec((SV*) PL_stashcache);
850 PL_stashcache = NULL;
851
5f05dabc
PP
852 /* loosen bonds of global variables */
853
3280af22
NIS
854 if(PL_rsfp) {
855 (void)PerlIO_close(PL_rsfp);
4608196e 856 PL_rsfp = NULL;
8ebc5c01
PP
857 }
858
859 /* Filters for program text */
3280af22 860 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 861 PL_rsfp_filters = NULL;
8ebc5c01
PP
862
863 /* switches */
3280af22
NIS
864 PL_preprocess = FALSE;
865 PL_minus_n = FALSE;
866 PL_minus_p = FALSE;
867 PL_minus_l = FALSE;
868 PL_minus_a = FALSE;
869 PL_minus_F = FALSE;
870 PL_doswitches = FALSE;
599cee73 871 PL_dowarn = G_WARN_OFF;
3280af22
NIS
872 PL_doextract = FALSE;
873 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
874 PL_unsafe = FALSE;
875
876 Safefree(PL_inplace);
bd61b366 877 PL_inplace = NULL;
a7cb1f99 878 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
879
880 if (PL_e_script) {
881 SvREFCNT_dec(PL_e_script);
a0714e2c 882 PL_e_script = NULL;
8ebc5c01
PP
883 }
884
bf9cdc68
RG
885 PL_perldb = 0;
886
8ebc5c01
PP
887 /* magical thingies */
888
7889fe52 889 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 890 PL_ofs_sv = NULL;
5f05dabc 891
7889fe52 892 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 893 PL_ors_sv = NULL;
8ebc5c01 894
3280af22 895 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 896 PL_rs = NULL;
dc92893f 897
d33b2eba
GS
898 PL_multiline = 0; /* $* */
899 Safefree(PL_osname); /* $^O */
bd61b366 900 PL_osname = NULL;
5f05dabc 901
3280af22 902 SvREFCNT_dec(PL_statname);
a0714e2c
SS
903 PL_statname = NULL;
904 PL_statgv = NULL;
5f05dabc 905
8ebc5c01
PP
906 /* defgv, aka *_ should be taken care of elsewhere */
907
8ebc5c01 908 /* clean up after study() */
3280af22 909 SvREFCNT_dec(PL_lastscream);
a0714e2c 910 PL_lastscream = NULL;
3280af22
NIS
911 Safefree(PL_screamfirst);
912 PL_screamfirst = 0;
913 Safefree(PL_screamnext);
914 PL_screamnext = 0;
8ebc5c01 915
7d5ea4e7
GS
916 /* float buffer */
917 Safefree(PL_efloatbuf);
bd61b366 918 PL_efloatbuf = NULL;
7d5ea4e7
GS
919 PL_efloatsize = 0;
920
8ebc5c01 921 /* startup and shutdown function lists */
3280af22 922 SvREFCNT_dec(PL_beginav);
5a837c8f 923 SvREFCNT_dec(PL_beginav_save);
3280af22 924 SvREFCNT_dec(PL_endav);
7d30b5c4 925 SvREFCNT_dec(PL_checkav);
ece599bd 926 SvREFCNT_dec(PL_checkav_save);
3280af22 927 SvREFCNT_dec(PL_initav);
7d49f689
NC
928 PL_beginav = NULL;
929 PL_beginav_save = NULL;
930 PL_endav = NULL;
931 PL_checkav = NULL;
932 PL_checkav_save = NULL;
933 PL_initav = NULL;
5618dfe8 934
8ebc5c01 935 /* shortcuts just get cleared */
a0714e2c
SS
936 PL_envgv = NULL;
937 PL_incgv = NULL;
938 PL_hintgv = NULL;
939 PL_errgv = NULL;
940 PL_argvgv = NULL;
941 PL_argvoutgv = NULL;
942 PL_stdingv = NULL;
943 PL_stderrgv = NULL;
944 PL_last_in_gv = NULL;
945 PL_replgv = NULL;
946 PL_DBgv = NULL;
947 PL_DBline = NULL;
948 PL_DBsub = NULL;
949 PL_DBsingle = NULL;
950 PL_DBtrace = NULL;
951 PL_DBsignal = NULL;
952 PL_DBassertion = NULL;
601f1833 953 PL_DBcv = NULL;
7d49f689 954 PL_dbargs = NULL;
5c284bb0 955 PL_debstash = NULL;
8ebc5c01 956
7a1c5554 957 SvREFCNT_dec(PL_argvout_stack);
7d49f689 958 PL_argvout_stack = NULL;
8ebc5c01 959
5c831c24 960 SvREFCNT_dec(PL_modglobal);
5c284bb0 961 PL_modglobal = NULL;
5c831c24 962 SvREFCNT_dec(PL_preambleav);
7d49f689 963 PL_preambleav = NULL;
5c831c24 964 SvREFCNT_dec(PL_subname);
a0714e2c 965 PL_subname = NULL;
5c831c24 966 SvREFCNT_dec(PL_linestr);
a0714e2c 967 PL_linestr = NULL;
ca0c25f6 968#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 969 SvREFCNT_dec(PL_pidstatus);
5c284bb0 970 PL_pidstatus = NULL;
ca0c25f6 971#endif
5c831c24 972 SvREFCNT_dec(PL_toptarget);
a0714e2c 973 PL_toptarget = NULL;
5c831c24 974 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
975 PL_bodytarget = NULL;
976 PL_formtarget = NULL;
5c831c24 977
d33b2eba 978 /* free locale stuff */
b9582b6a 979#ifdef USE_LOCALE_COLLATE
d33b2eba 980 Safefree(PL_collation_name);
bd61b366 981 PL_collation_name = NULL;
b9582b6a 982#endif
d33b2eba 983
b9582b6a 984#ifdef USE_LOCALE_NUMERIC
d33b2eba 985 Safefree(PL_numeric_name);
bd61b366 986 PL_numeric_name = NULL;
a453c169 987 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 988 PL_numeric_radix_sv = NULL;
b9582b6a 989#endif
d33b2eba 990
5c831c24
GS
991 /* clear utf8 character classes */
992 SvREFCNT_dec(PL_utf8_alnum);
993 SvREFCNT_dec(PL_utf8_alnumc);
994 SvREFCNT_dec(PL_utf8_ascii);
995 SvREFCNT_dec(PL_utf8_alpha);
996 SvREFCNT_dec(PL_utf8_space);
997 SvREFCNT_dec(PL_utf8_cntrl);
998 SvREFCNT_dec(PL_utf8_graph);
999 SvREFCNT_dec(PL_utf8_digit);
1000 SvREFCNT_dec(PL_utf8_upper);
1001 SvREFCNT_dec(PL_utf8_lower);
1002 SvREFCNT_dec(PL_utf8_print);
1003 SvREFCNT_dec(PL_utf8_punct);
1004 SvREFCNT_dec(PL_utf8_xdigit);
1005 SvREFCNT_dec(PL_utf8_mark);
1006 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1007 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1008 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1009 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1010 SvREFCNT_dec(PL_utf8_idstart);
1011 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1012 PL_utf8_alnum = NULL;
1013 PL_utf8_alnumc = NULL;
1014 PL_utf8_ascii = NULL;
1015 PL_utf8_alpha = NULL;
1016 PL_utf8_space = NULL;
1017 PL_utf8_cntrl = NULL;
1018 PL_utf8_graph = NULL;
1019 PL_utf8_digit = NULL;
1020 PL_utf8_upper = NULL;
1021 PL_utf8_lower = NULL;
1022 PL_utf8_print = NULL;
1023 PL_utf8_punct = NULL;
1024 PL_utf8_xdigit = NULL;
1025 PL_utf8_mark = NULL;
1026 PL_utf8_toupper = NULL;
1027 PL_utf8_totitle = NULL;
1028 PL_utf8_tolower = NULL;
1029 PL_utf8_tofold = NULL;
1030 PL_utf8_idstart = NULL;
1031 PL_utf8_idcont = NULL;
5c831c24 1032
971a9dd3
GS
1033 if (!specialWARN(PL_compiling.cop_warnings))
1034 SvREFCNT_dec(PL_compiling.cop_warnings);
a0714e2c 1035 PL_compiling.cop_warnings = NULL;
ac27b0f5
NIS
1036 if (!specialCopIO(PL_compiling.cop_io))
1037 SvREFCNT_dec(PL_compiling.cop_io);
a0714e2c 1038 PL_compiling.cop_io = NULL;
05ec9bb3
NIS
1039 CopFILE_free(&PL_compiling);
1040 CopSTASH_free(&PL_compiling);
5c831c24 1041
a0d0e21e 1042 /* Prepare to destruct main symbol table. */
5f05dabc 1043
3280af22
NIS
1044 hv = PL_defstash;
1045 PL_defstash = 0;
a0d0e21e 1046 SvREFCNT_dec(hv);
5c831c24 1047 SvREFCNT_dec(PL_curstname);
a0714e2c 1048 PL_curstname = NULL;
a0d0e21e 1049
5a844595
GS
1050 /* clear queued errors */
1051 SvREFCNT_dec(PL_errors);
a0714e2c 1052 PL_errors = NULL;
5a844595 1053
a0d0e21e 1054 FREETMPS;
0453d815 1055 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1056 if (PL_scopestack_ix != 0)
9014280d 1057 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1058 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1059 (long)PL_scopestack_ix);
1060 if (PL_savestack_ix != 0)
9014280d 1061 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1062 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1063 (long)PL_savestack_ix);
1064 if (PL_tmps_floor != -1)
9014280d 1065 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1066 (long)PL_tmps_floor + 1);
a0d0e21e 1067 if (cxstack_ix != -1)
9014280d 1068 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1069 (long)cxstack_ix + 1);
a0d0e21e 1070 }
8990e307
LW
1071
1072 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1073 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1074 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1075
1076 /* the 2 is for PL_fdpid and PL_strtab */
1077 while (PL_sv_count > 2 && sv_clean_all())
1078 ;
1079
d33b2eba
GS
1080 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1081 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1082 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1083 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1084
d4777f27
GS
1085 AvREAL_off(PL_fdpid); /* no surviving entries */
1086 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1087 PL_fdpid = NULL;
d33b2eba 1088
6c644e78
GS
1089#ifdef HAVE_INTERP_INTERN
1090 sys_intern_clear();
1091#endif
1092
6e72f9df
PP
1093 /* Destruct the global string table. */
1094 {
1095 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1096 * so that sv_free() won't fail on them.
80459961
NC
1097 * Now that the global string table is using a single hunk of memory
1098 * for both HE and HEK, we either need to explicitly unshare it the
1099 * correct way, or actually free things here.
6e72f9df 1100 */
80459961
NC
1101 I32 riter = 0;
1102 const I32 max = HvMAX(PL_strtab);
c4420975 1103 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1104 HE *hent = array[0];
1105
6e72f9df 1106 for (;;) {
0453d815 1107 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1108 HE * const next = HeNEXT(hent);
9014280d 1109 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1110 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1111 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1112 Safefree(hent);
1113 hent = next;
6e72f9df
PP
1114 }
1115 if (!hent) {
1116 if (++riter > max)
1117 break;
1118 hent = array[riter];
1119 }
1120 }
80459961
NC
1121
1122 Safefree(array);
1123 HvARRAY(PL_strtab) = 0;
1124 HvTOTALKEYS(PL_strtab) = 0;
1125 HvFILL(PL_strtab) = 0;
6e72f9df 1126 }
3280af22 1127 SvREFCNT_dec(PL_strtab);
6e72f9df 1128
e652bb2f 1129#ifdef USE_ITHREADS
c21d1a0f 1130 /* free the pointer tables used for cloning */
a0739874 1131 ptr_table_free(PL_ptr_table);
bf9cdc68 1132 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1133#endif
a0739874 1134
d33b2eba
GS
1135 /* free special SVs */
1136
1137 SvREFCNT(&PL_sv_yes) = 0;
1138 sv_clear(&PL_sv_yes);
1139 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1140 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1141
1142 SvREFCNT(&PL_sv_no) = 0;
1143 sv_clear(&PL_sv_no);
1144 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1145 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1146
9f375a43
DM
1147 {
1148 int i;
1149 for (i=0; i<=2; i++) {
1150 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1151 sv_clear(PERL_DEBUG_PAD(i));
1152 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1153 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1154 }
1155 }
1156
0453d815 1157 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1158 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1159
eba0f806
DM
1160#ifdef DEBUG_LEAKING_SCALARS
1161 if (PL_sv_count != 0) {
1162 SV* sva;
1163 SV* sv;
1164 register SV* svend;
1165
1166 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1167 svend = &sva[SvREFCNT(sva)];
1168 for (sv = sva + 1; sv < svend; ++sv) {
1169 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1170 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1171 " flags=0x%"UVxf
fd0854ff
DM
1172 " refcnt=%"UVuf pTHX__FORMAT "\n"
1173 "\tallocated at %s:%d %s %s%s\n",
1174 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1175 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1176 sv->sv_debug_line,
1177 sv->sv_debug_inpad ? "for" : "by",
1178 sv->sv_debug_optype ?
1179 PL_op_name[sv->sv_debug_optype]: "(none)",
1180 sv->sv_debug_cloned ? " (cloned)" : ""
1181 );
2aa47728 1182#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1183 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1184#endif
eba0f806
DM
1185 }
1186 }
1187 }
1188 }
2aa47728
NC
1189#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1190 {
1191 int status;
1192 fd_set rset;
1193 /* Wait for up to 4 seconds for child to terminate.
1194 This seems to be the least effort way of timing out on reaping
1195 its exit status. */
1196 struct timeval waitfor = {4, 0};
41e4abd8 1197 int sock = PL_dumper_fd;
2aa47728
NC
1198
1199 shutdown(sock, 1);
1200 FD_ZERO(&rset);
1201 FD_SET(sock, &rset);
1202 select(sock + 1, &rset, NULL, NULL, &waitfor);
1203 waitpid(child, &status, WNOHANG);
1204 close(sock);
1205 }
1206#endif
eba0f806 1207#endif
bf9cdc68 1208 PL_sv_count = 0;
eba0f806
DM
1209
1210
56a2bab7 1211#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1212 /* No more IO - including error messages ! */
1213 PerlIO_cleanup(aTHX);
1214#endif
1215
9f4bd222 1216 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1217 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1218 for no arg - and will try and SvREFCNT_dec it.
1219 */
1220 SvREFCNT(&PL_sv_undef) = 0;
1221 SvREADONLY_off(&PL_sv_undef);
1222
3280af22 1223 Safefree(PL_origfilename);
bd61b366 1224 PL_origfilename = NULL;
3280af22 1225 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1226 PL_reg_start_tmp = (char**)NULL;
1227 PL_reg_start_tmpl = 0;
43c5f42d 1228 Safefree(PL_reg_curpm);
82ba1be6 1229 Safefree(PL_reg_poscache);
dd28f7bb 1230 free_tied_hv_pool();
3280af22 1231 Safefree(PL_op_mask);
cf36064f 1232 Safefree(PL_psig_ptr);
bf9cdc68 1233 PL_psig_ptr = (SV**)NULL;
cf36064f 1234 Safefree(PL_psig_name);
bf9cdc68 1235 PL_psig_name = (SV**)NULL;
2c2666fc 1236 Safefree(PL_bitcount);
bd61b366 1237 PL_bitcount = NULL;
ce08f86c 1238 Safefree(PL_psig_pend);
bf9cdc68 1239 PL_psig_pend = (int*)NULL;
a0714e2c 1240 PL_formfeed = NULL;
6e72f9df 1241 nuke_stacks();
bf9cdc68
RG
1242 PL_tainting = FALSE;
1243 PL_taint_warn = FALSE;
3280af22 1244 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1245 PL_debug = 0;
ac27b0f5 1246
a0d0e21e 1247 DEBUG_P(debprofdump());
d33b2eba 1248
e5dd39fc 1249#ifdef USE_REENTRANT_API
10bc17b6 1250 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1251#endif
1252
612f20c3
GS
1253 sv_free_arenas();
1254
fc36a67e
PP
1255 /* As the absolutely last thing, free the non-arena SV for mess() */
1256
3280af22 1257 if (PL_mess_sv) {
f350b448
NC
1258 /* we know that type == SVt_PVMG */
1259
9c63abab 1260 /* it could have accumulated taint magic */
f350b448
NC
1261 MAGIC* mg;
1262 MAGIC* moremagic;
1263 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1264 moremagic = mg->mg_moremagic;
1265 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1266 && mg->mg_len >= 0)
1267 Safefree(mg->mg_ptr);
1268 Safefree(mg);
9c63abab 1269 }
f350b448 1270
fc36a67e 1271 /* we know that type >= SVt_PV */
8bd4d4c5 1272 SvPV_free(PL_mess_sv);
3280af22
NIS
1273 Safefree(SvANY(PL_mess_sv));
1274 Safefree(PL_mess_sv);
a0714e2c 1275 PL_mess_sv = NULL;
fc36a67e 1276 }
37038d91 1277 return STATUS_EXIT;
79072805
LW
1278}
1279
954c1994
GS
1280/*
1281=for apidoc perl_free
1282
1283Releases a Perl interpreter. See L<perlembed>.
1284
1285=cut
1286*/
1287
79072805 1288void
0cb96387 1289perl_free(pTHXx)
79072805 1290{
7cb608b5 1291#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1292 {
1293 /*
1294 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1295 * value as we're probably hunting memory leaks then
1296 */
1297 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1298 if (!s || atoi(s) == 0) {
1299 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1300 thread at thread exit. */
1301 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1302 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1303 }
1304 }
7cb608b5
NC
1305#endif
1306
acfe0abc 1307#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1308# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1309 {
acfe0abc 1310# ifdef NETWARE
7af12a34 1311 void *host = nw_internal_host;
acfe0abc 1312# else
7af12a34 1313 void *host = w32_internal_host;
acfe0abc 1314# endif
7af12a34 1315 PerlMem_free(aTHXx);
acfe0abc 1316# ifdef NETWARE
7af12a34 1317 nw_delete_internal_host(host);
acfe0abc 1318# else
7af12a34 1319 win32_delete_internal_host(host);
acfe0abc 1320# endif
7af12a34 1321 }
1c0ca838
GS
1322# else
1323 PerlMem_free(aTHXx);
1324# endif
acfe0abc
GS
1325#else
1326 PerlMem_free(aTHXx);
76e3520e 1327#endif
79072805
LW
1328}
1329
b7f7fff6 1330#if defined(USE_ITHREADS)
aebd1ac7
GA
1331/* provide destructors to clean up the thread key when libperl is unloaded */
1332#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1333
826955bd 1334#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7
GA
1335#pragma fini "perl_fini"
1336#endif
1337
0dbb1585
AL
1338static void
1339#if defined(__GNUC__)
1340__attribute__((destructor))
aebd1ac7 1341#endif
de009b76 1342perl_fini(void)
aebd1ac7 1343{
27da23d5 1344 dVAR;
aebd1ac7
GA
1345 if (PL_curinterp)
1346 FREE_THREAD_KEY;
1347}
1348
1349#endif /* WIN32 */
1350#endif /* THREADS */
1351
4b556e6c 1352void
864dbfa3 1353Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1354{
97aff369 1355 dVAR;
3280af22
NIS
1356 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1357 PL_exitlist[PL_exitlistlen].fn = fn;
1358 PL_exitlist[PL_exitlistlen].ptr = ptr;
1359 ++PL_exitlistlen;
4b556e6c
JD
1360}
1361
56cf6df8
RGS
1362#ifdef HAS_PROCSELFEXE
1363/* This is a function so that we don't hold on to MAXPATHLEN
1364 bytes of stack longer than necessary
1365 */
1366STATIC void
e1ec3a88 1367S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1368{
1369 char buf[MAXPATHLEN];
1370 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1371
1372 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1373 includes a spurious NUL which will cause $^X to fail in system
1374 or backticks (this will prevent extensions from being built and
1375 many tests from working). readlink is not meant to add a NUL.
1376 Normal readlink works fine.
1377 */
1378 if (len > 0 && buf[len-1] == '\0') {
1379 len--;
1380 }
1381
1382 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1383 returning the text "unknown" from the readlink rather than the path
1384 to the executable (or returning an error from the readlink). Any valid
1385 path has a '/' in it somewhere, so use that to validate the result.
1386 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1387 */
1388 if (len > 0 && memchr(buf, '/', len)) {
1389 sv_setpvn(sv,buf,len);
1390 }
1391 else {
1392 sv_setpv(sv,arg0);
1393 }
1394}
1395#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1396
1397STATIC void
1398S_set_caret_X(pTHX) {
97aff369 1399 dVAR;
fafc274c 1400 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1401 if (tmpgv) {
1402#ifdef HAS_PROCSELFEXE
1403 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1404#else
1405#ifdef OS2
c69033f2 1406 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1407#else
c69033f2 1408 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1409#endif
1410#endif
1411 }
1412}
1413
954c1994
GS
1414/*
1415=for apidoc perl_parse
1416
1417Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1418
1419=cut
1420*/
1421
79072805 1422int
0cb96387 1423perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1424{
27da23d5 1425 dVAR;
6224f72b 1426 I32 oldscope;
6224f72b 1427 int ret;
db36c5a1 1428 dJMPENV;
8d063cd8 1429
9d4ba2ae
AL
1430 PERL_UNUSED_VAR(my_perl);
1431
a687059c
LW
1432#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1433#ifdef IAMSUID
1434#undef IAMSUID
cea2e8a9 1435 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1436setuid perl scripts securely.\n");
ae3f3efd 1437#endif /* IAMSUID */
a687059c
LW
1438#endif
1439
b0891165
JH
1440#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1441 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1442 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1443 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1444 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1445 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1446 if (!PL_rehash_seed_set)
1447 PL_rehash_seed = get_hash_seed();
b0891165 1448 {
9d4ba2ae 1449 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1450
1b6737cc
AL
1451 if (s && (atoi(s) == 1))
1452 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1453 }
1454#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1455
3280af22 1456 PL_origargc = argc;
e2975953 1457 PL_origargv = argv;
a0d0e21e 1458
a2722ac9
GA
1459 if (PL_origalen != 0) {
1460 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1461 }
1462 else {
3cb9023d
JH
1463 /* Set PL_origalen be the sum of the contiguous argv[]
1464 * elements plus the size of the env in case that it is
e9137a8e 1465 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1466 * as the maximum modifiable length of $0. In the worst case
1467 * the area we are able to modify is limited to the size of
43c32782 1468 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1469 * --jhi */
e1ec3a88 1470 const char *s = NULL;
54bfe034 1471 int i;
1b6737cc 1472 const UV mask =
7d8e7db3 1473 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1474 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1475 const UV aligned =
43c32782
JH
1476 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1477
1478 /* See if all the arguments are contiguous in memory. Note
1479 * that 'contiguous' is a loose term because some platforms
1480 * align the argv[] and the envp[]. If the arguments look
1481 * like non-aligned, assume that they are 'strictly' or
1482 * 'traditionally' contiguous. If the arguments look like
1483 * aligned, we just check that they are within aligned
1484 * PTRSIZE bytes. As long as no system has something bizarre
1485 * like the argv[] interleaved with some other data, we are
1486 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1487 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1488 while (*s) s++;
1489 for (i = 1; i < PL_origargc; i++) {
1490 if ((PL_origargv[i] == s + 1
43c32782 1491#ifdef OS2
c8941eeb 1492 || PL_origargv[i] == s + 2
43c32782 1493#endif
c8941eeb
JH
1494 )
1495 ||
1496 (aligned &&
1497 (PL_origargv[i] > s &&
1498 PL_origargv[i] <=
1499 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1500 )
1501 {
1502 s = PL_origargv[i];
1503 while (*s) s++;
1504 }
1505 else
1506 break;
54bfe034 1507 }
54bfe034 1508 }
3cb9023d 1509 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1510 if (s && PL_origenviron) {
43c32782
JH
1511 if ((PL_origenviron[0] == s + 1
1512#ifdef OS2
1513 || (PL_origenviron[0] == s + 9 && (s += 8))
1514#endif
1515 )
1516 ||
1517 (aligned &&
1518 (PL_origenviron[0] > s &&
1519 PL_origenviron[0] <=
1520 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1521 )
1522 {
1523#ifndef OS2
1524 s = PL_origenviron[0];
1525 while (*s) s++;
1526#endif
bd61b366 1527 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1528 /* Force copy of environment. */
1529 for (i = 1; PL_origenviron[i]; i++) {
1530 if (PL_origenviron[i] == s + 1
1531 ||
1532 (aligned &&
1533 (PL_origenviron[i] > s &&
1534 PL_origenviron[i] <=
1535 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1536 )
1537 {
1538 s = PL_origenviron[i];
1539 while (*s) s++;
1540 }
1541 else
1542 break;
54bfe034 1543 }
43c32782 1544 }
54bfe034 1545 }
2d2af554 1546 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1547 }
1548
3280af22 1549 if (PL_do_undump) {
a0d0e21e
LW
1550
1551 /* Come here if running an undumped a.out. */
1552
3280af22
NIS
1553 PL_origfilename = savepv(argv[0]);
1554 PL_do_undump = FALSE;
a0d0e21e 1555 cxstack_ix = -1; /* start label stack again */
748a9306 1556 init_ids();
b7975bdd
NC
1557 assert (!PL_tainted);
1558 TAINT;
1559 S_set_caret_X(aTHX);
1560 TAINT_NOT;
a0d0e21e
LW
1561 init_postdump_symbols(argc,argv,env);
1562 return 0;
1563 }
1564
3280af22 1565 if (PL_main_root) {
3280af22 1566 op_free(PL_main_root);
5f66b61c 1567 PL_main_root = NULL;
ff0cee69 1568 }
5f66b61c 1569 PL_main_start = NULL;
3280af22 1570 SvREFCNT_dec(PL_main_cv);
601f1833 1571 PL_main_cv = NULL;
79072805 1572
3280af22
NIS
1573 time(&PL_basetime);
1574 oldscope = PL_scopestack_ix;
599cee73 1575 PL_dowarn = G_WARN_OFF;
f86702cc 1576
14dd3ad8 1577 JMPENV_PUSH(ret);
6224f72b 1578 switch (ret) {
312caa8e 1579 case 0:
14dd3ad8 1580 parse_body(env,xsinit);
7d30b5c4
GS
1581 if (PL_checkav)
1582 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1583 ret = 0;
1584 break;
6224f72b
GS
1585 case 1:
1586 STATUS_ALL_FAILURE;
1587 /* FALL THROUGH */
1588 case 2:
1589 /* my_exit() was called */
3280af22 1590 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1591 LEAVE;
1592 FREETMPS;
3280af22 1593 PL_curstash = PL_defstash;
7d30b5c4
GS
1594 if (PL_checkav)
1595 call_list(oldscope, PL_checkav);
37038d91 1596 ret = STATUS_EXIT;
14dd3ad8 1597 break;
6224f72b 1598 case 3:
bf49b057 1599 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1600 ret = 1;
1601 break;
6224f72b 1602 }
14dd3ad8
GS
1603 JMPENV_POP;
1604 return ret;
1605}
1606
312caa8e 1607STATIC void *
14dd3ad8 1608S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1609{
27da23d5 1610 dVAR;
312caa8e 1611 int argc = PL_origargc;
8f42b153 1612 char **argv = PL_origargv;
e1ec3a88 1613 const char *scriptname = NULL;
312caa8e 1614 VOL bool dosearch = FALSE;
e1ec3a88 1615 const char *validarg = "";
312caa8e
CS
1616 register SV *sv;
1617 register char *s;
bd61b366 1618 const char *cddir = NULL;
ab019eaa 1619#ifdef USE_SITECUSTOMIZE
20ef40cf 1620 bool minus_f = FALSE;
ab019eaa 1621#endif
312caa8e 1622
3280af22 1623 sv_setpvn(PL_linestr,"",0);
396482e1 1624 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1625 SAVEFREESV(sv);
1626 init_main_stash();
54310121 1627
6224f72b
GS
1628 for (argc--,argv++; argc > 0; argc--,argv++) {
1629 if (argv[0][0] != '-' || !argv[0][1])
1630 break;
1631#ifdef DOSUID
1632 if (*validarg)
1633 validarg = " PHOOEY ";
1634 else
1635 validarg = argv[0];
ae3f3efd
PS
1636 /*
1637 * Can we rely on the kernel to start scripts with argv[1] set to
1638 * contain all #! line switches (the whole line)? (argv[0] is set to
1639 * the interpreter name, argv[2] to the script name; argv[3] and
1640 * above may contain other arguments.)
1641 */
13281fa4 1642#endif
6224f72b
GS
1643 s = argv[0]+1;
1644 reswitch:
1645 switch (*s) {
729a02f2 1646 case 'C':
1d5472a9
GS
1647#ifndef PERL_STRICT_CR
1648 case '\r':
1649#endif
6224f72b
GS
1650 case ' ':
1651 case '0':
1652 case 'F':
1653 case 'a':
1654 case 'c':
1655 case 'd':
1656 case 'D':
1657 case 'h':
1658 case 'i':
1659 case 'l':
1660 case 'M':
1661 case 'm':
1662 case 'n':
1663 case 'p':
1664 case 's':
1665 case 'u':
1666 case 'U':
1667 case 'v':
599cee73
PM
1668 case 'W':
1669 case 'X':
6224f72b 1670 case 'w':
06492da6 1671 case 'A':
97bd5664 1672 if ((s = moreswitches(s)))
6224f72b
GS
1673 goto reswitch;
1674 break;
33b78306 1675
1dbad523 1676 case 't':
22f7c9c9 1677 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1678 if( !PL_tainting ) {
1679 PL_taint_warn = TRUE;
1680 PL_tainting = TRUE;
1681 }
1682 s++;
1683 goto reswitch;
6224f72b 1684 case 'T':
22f7c9c9 1685 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1686 PL_tainting = TRUE;
317ea90d 1687 PL_taint_warn = FALSE;
6224f72b
GS
1688 s++;
1689 goto reswitch;
f86702cc 1690
bc9b29db
RH
1691 case 'E':
1692 PL_minus_E = TRUE;
1693 /* FALL THROUGH */
6224f72b 1694 case 'e':
bf4acbe4
GS
1695#ifdef MACOS_TRADITIONAL
1696 /* ignore -e for Dev:Pseudo argument */
1697 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1698 break;
bf4acbe4 1699#endif
a52eba0e 1700 forbid_setid('e', -1);
3280af22 1701 if (!PL_e_script) {
396482e1 1702 PL_e_script = newSVpvs("");
0cb96387 1703 filter_add(read_e_script, NULL);
6224f72b
GS
1704 }
1705 if (*++s)
3280af22 1706 sv_catpv(PL_e_script, s);
6224f72b 1707 else if (argv[1]) {
3280af22 1708 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1709 argc--,argv++;
1710 }
1711 else
bc9b29db 1712 Perl_croak(aTHX_ "No code specified for -%c", *s);
396482e1 1713 sv_catpvs(PL_e_script, "\n");
6224f72b 1714 break;
afe37c7d 1715
20ef40cf 1716 case 'f':
f5542d3a 1717#ifdef USE_SITECUSTOMIZE
20ef40cf 1718 minus_f = TRUE;
f5542d3a 1719#endif
20ef40cf
GA
1720 s++;
1721 goto reswitch;
1722
6224f72b 1723 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1724 forbid_setid('I', -1);
bd61b366 1725 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1726 argc--,argv++;
1727 }
6224f72b 1728 if (s && *s) {
0df16ed7 1729 STRLEN len = strlen(s);
aec46f14 1730 const char * const p = savepvn(s, len);
88fe16b2 1731 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1732 sv_catpvs(sv, "-I");
0df16ed7 1733 sv_catpvn(sv, p, len);
396482e1 1734 sv_catpvs(sv, " ");
6224f72b 1735 Safefree(p);
0df16ed7
GS
1736 }
1737 else
a67e862a 1738 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1739 break;
1740 case 'P':
a52eba0e 1741 forbid_setid('P', -1);
3280af22 1742 PL_preprocess = TRUE;
6224f72b
GS
1743 s++;
1744 goto reswitch;
1745 case 'S':
a52eba0e 1746 forbid_setid('S', -1);
6224f72b
GS
1747 dosearch = TRUE;
1748 s++;
1749 goto reswitch;
1750 case 'V':
7edfd0ef
NC
1751 {
1752 SV *opts_prog;
1753
1754 if (!PL_preambleav)
1755 PL_preambleav = newAV();
1756 av_push(PL_preambleav,
396482e1 1757 newSVpvs("use Config;"));
7edfd0ef
NC
1758 if (*++s != ':') {
1759 STRLEN opts;
1760
396482e1 1761 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1762#ifdef VMS
396482e1 1763 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1764#else
396482e1 1765 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1766#endif
7edfd0ef 1767 opts = SvCUR(opts_prog);
efcaa95b 1768
9cd7d3f2 1769 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1770# ifdef DEBUGGING
e2e4dbf1 1771 " DEBUGGING"
6224f72b 1772# endif
4f185743
NC
1773# ifdef DEBUG_LEAKING_SCALARS
1774 " DEBUG_LEAKING_SCALARS"
1775# endif
85e1fcb9 1776# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1777 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1778# endif
1779# ifdef FAKE_THREADS
e2e4dbf1 1780 " FAKE_THREADS"
85e1fcb9 1781# endif
6224f72b 1782# ifdef MULTIPLICITY
e2e4dbf1 1783 " MULTIPLICITY"
6224f72b 1784# endif
85e1fcb9 1785# ifdef MYMALLOC
e2e4dbf1 1786 " MYMALLOC"
85e1fcb9 1787# endif
3bcf5ed8
SP
1788# ifdef NO_MATHOMS
1789 " NO_MATHOMS"
1790# endif
85e1fcb9 1791# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1792 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1793# endif
1794# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1795 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1796# endif
1797# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1798 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1799# endif
1800# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1801 " PERL_IMPLICIT_SYS"
85e1fcb9 1802# endif
a724edfe
NC
1803# ifdef PERL_MAD
1804 " PERL_MAD"
1805# endif
85e1fcb9 1806# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1807 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1808# endif
1809# ifdef PERL_NEED_APPCTX
e2e4dbf1 1810 " PERL_NEED_APPCTX"
85e1fcb9
SH
1811# endif
1812# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1813 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1814# endif
1815# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1816 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1817# endif
9c0a4d5d
DM
1818# ifdef PERL_TRACK_MEMPOOL
1819 " PERL_TRACK_MEMPOOL"
1820# endif
417cd4a8
SP
1821# ifdef PERL_USE_SAFE_PUTENV
1822 " PERL_USE_SAFE_PUTENV"
1823# endif
ca0c25f6
NC
1824#ifdef PERL_USES_PL_PIDSTATUS
1825 " PERL_USES_PL_PIDSTATUS"
1826#endif
85e1fcb9 1827# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1828 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1829# endif
1830# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1831 " THREADS_HAVE_PIDS"
85e1fcb9 1832# endif
85e1fcb9 1833# ifdef USE_64_BIT_ALL
e2e4dbf1 1834 " USE_64_BIT_ALL"
ac5e8965 1835# endif
10cc9d2a 1836# ifdef USE_64_BIT_INT
e2e4dbf1 1837 " USE_64_BIT_INT"
10cc9d2a 1838# endif
85e1fcb9 1839# ifdef USE_ITHREADS
e2e4dbf1 1840 " USE_ITHREADS"
85e1fcb9
SH
1841# endif
1842# ifdef USE_LARGE_FILES
e2e4dbf1 1843 " USE_LARGE_FILES"
ac5e8965
JH
1844# endif
1845# ifdef USE_LONG_DOUBLE
e2e4dbf1 1846 " USE_LONG_DOUBLE"
ac5e8965 1847# endif
85e1fcb9 1848# ifdef USE_PERLIO
e2e4dbf1 1849 " USE_PERLIO"
53430762 1850# endif
85e1fcb9 1851# ifdef USE_REENTRANT_API
e2e4dbf1 1852 " USE_REENTRANT_API"
85e1fcb9
SH
1853# endif
1854# ifdef USE_SFIO
e2e4dbf1 1855 " USE_SFIO"
ac5e8965 1856# endif
20ef40cf 1857# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1858 " USE_SITECUSTOMIZE"
20ef40cf 1859# endif
85e1fcb9 1860# ifdef USE_SOCKS
e2e4dbf1 1861 " USE_SOCKS"
b363f7ed 1862# endif
e2e4dbf1 1863 );
efcaa95b 1864
7edfd0ef
NC
1865 while (SvCUR(opts_prog) > opts+76) {
1866 /* find last space after "options: " and before col 76
1867 */
efcaa95b 1868
7edfd0ef 1869 const char *space;
c4420975 1870 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1871 const char c = pv[opts+76];
1872 pv[opts+76] = '\0';
1873 space = strrchr(pv+opts+26, ' ');
1874 pv[opts+76] = c;
1875 if (!space) break; /* "Can't happen" */
efcaa95b 1876
7edfd0ef 1877 /* break the line before that space */
efcaa95b 1878
7edfd0ef 1879 opts = space - pv;
89529cee 1880 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1881 STR_WITH_LEN("\\n "));
7edfd0ef 1882 }
efcaa95b 1883
396482e1 1884 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1885
6224f72b 1886#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1887 if (LOCAL_PATCH_COUNT > 0) {
1888 int i;
396482e1 1889 sv_catpvs(opts_prog,
7edfd0ef
NC
1890 "\" Locally applied patches:\\n\",");
1891 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1892 if (PL_localpatches[i])
1893 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1894 0, PL_localpatches[i], 0);
1895 }
6224f72b 1896 }
6224f72b 1897#endif
7edfd0ef
NC
1898 Perl_sv_catpvf(aTHX_ opts_prog,
1899 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1900#ifdef __DATE__
1901# ifdef __TIME__
7edfd0ef
NC
1902 Perl_sv_catpvf(aTHX_ opts_prog,
1903 ",\" Compiled at %s %s\\n\"",__DATE__,
1904 __TIME__);
6224f72b 1905# else
7edfd0ef
NC
1906 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1907 __DATE__);
6224f72b
GS
1908# endif
1909#endif
396482e1 1910 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1911 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1912 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1913#ifdef __CYGWIN__
396482e1 1914 sv_catpvs(opts_prog,
7edfd0ef 1915 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1916#endif
396482e1 1917 sv_catpvs(opts_prog,
7edfd0ef
NC
1918 "print \" \\%ENV:\\n @env\\n\" if @env;"
1919 "print \" \\@INC:\\n @INC\\n\";");
1920 }
1921 else {
1922 ++s;
1923 opts_prog = Perl_newSVpvf(aTHX_
1924 "Config::config_vars(qw%c%s%c)",
1925 0, s, 0);
1926 s += strlen(s);
1927 }
1928 av_push(PL_preambleav, opts_prog);
1929 /* don't look for script or read stdin */
1930 scriptname = BIT_BUCKET;
1931 goto reswitch;
6224f72b 1932 }
6224f72b 1933 case 'x':
3280af22 1934 PL_doextract = TRUE;
6224f72b
GS
1935 s++;
1936 if (*s)
f4c556ac 1937 cddir = s;
6224f72b
GS
1938 break;
1939 case 0:
1940 break;
1941 case '-':
1942 if (!*++s || isSPACE(*s)) {
1943 argc--,argv++;
1944 goto switch_end;
1945 }
1946 /* catch use of gnu style long options */
1947 if (strEQ(s, "version")) {
dd374669 1948 s = (char *)"v";
6224f72b
GS
1949 goto reswitch;
1950 }
1951 if (strEQ(s, "help")) {
dd374669 1952 s = (char *)"h";
6224f72b
GS
1953 goto reswitch;
1954 }
1955 s--;
1956 /* FALL THROUGH */
1957 default:
cea2e8a9 1958 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1959 }
1960 }
6224f72b 1961 switch_end:
54310121 1962
f675dbe5
CB
1963 if (
1964#ifndef SECURE_INTERNAL_GETENV
1965 !PL_tainting &&
1966#endif
cf756827 1967 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1968 {
e1ec3a88 1969 const char *popt = s;
74288ac8
GS
1970 while (isSPACE(*s))
1971 s++;
317ea90d 1972 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1973 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1974 PL_tainting = TRUE;
317ea90d
MS
1975 PL_taint_warn = FALSE;
1976 }
74288ac8 1977 else {
bd61b366 1978 char *popt_copy = NULL;
74288ac8 1979 while (s && *s) {
4ea8f8fb 1980 char *d;
74288ac8
GS
1981 while (isSPACE(*s))
1982 s++;
1983 if (*s == '-') {
1984 s++;
1985 if (isSPACE(*s))
1986 continue;
1987 }
4ea8f8fb 1988 d = s;
74288ac8
GS
1989 if (!*s)
1990 break;
e4af53b0 1991 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 1992 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1993 while (++s && *s) {
1994 if (isSPACE(*s)) {
cf756827
GS
1995 if (!popt_copy) {
1996 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1997 s = popt_copy + (s - popt);
1998 d = popt_copy + (d - popt);
1999 }
4ea8f8fb
MS
2000 *s++ = '\0';
2001 break;
2002 }
2003 }
1c4db469 2004 if (*d == 't') {
317ea90d
MS
2005 if( !PL_tainting ) {
2006 PL_taint_warn = TRUE;
2007 PL_tainting = TRUE;
2008 }
1c4db469 2009 } else {
97bd5664 2010 moreswitches(d);
1c4db469 2011 }
6224f72b 2012 }
6224f72b
GS
2013 }
2014 }
a0d0e21e 2015
20ef40cf
GA
2016#ifdef USE_SITECUSTOMIZE
2017 if (!minus_f) {
2018 if (!PL_preambleav)
2019 PL_preambleav = newAV();
2020 av_unshift(PL_preambleav, 1);
2021 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
2022 }
2023#endif
2024
317ea90d
MS
2025 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
2026 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
2027 }
2028
6224f72b
GS
2029 if (!scriptname)
2030 scriptname = argv[0];
3280af22 2031 if (PL_e_script) {
6224f72b
GS
2032 argc++,argv--;
2033 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2034 }
bd61b366 2035 else if (scriptname == NULL) {
6224f72b
GS
2036#ifdef MSDOS
2037 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2038 moreswitches("h");
6224f72b
GS
2039#endif
2040 scriptname = "-";
2041 }
2042
b7975bdd
NC
2043 /* Set $^X early so that it can be used for relocatable paths in @INC */
2044 assert (!PL_tainted);
2045 TAINT;
2046 S_set_caret_X(aTHX);
2047 TAINT_NOT;
6224f72b
GS
2048 init_perllib();
2049
a52eba0e
NC
2050 {
2051 int suidscript;
2052 const int fdscript
2053 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2054
a52eba0e 2055 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2056
64ca3a65 2057#ifndef PERL_MICRO
a52eba0e
NC
2058# if defined(SIGCHLD) || defined(SIGCLD)
2059 {
2060# ifndef SIGCHLD
2061# define SIGCHLD SIGCLD
2062# endif
2063 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2064 if (sigstate == (Sighandler_t) SIG_IGN) {
2065 if (ckWARN(WARN_SIGNAL))
2066 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2067 "Can't ignore signal CHLD, forcing to default");
2068 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2069 }
0b5b802d 2070 }
a52eba0e 2071# endif
64ca3a65 2072#endif
0b5b802d 2073
a52eba0e 2074 if (PL_doextract
bf4acbe4 2075#ifdef MACOS_TRADITIONAL
a52eba0e 2076 || gMacPerl_AlwaysExtract
bf4acbe4 2077#endif
a52eba0e 2078 ) {
faef540c
NC
2079
2080 /* This will croak if suidscript is >= 0, as -x cannot be used with
2081 setuid scripts. */
2082 forbid_setid('x', suidscript);
2083 /* Hence you can't get here if suidscript >= 0 */
2084
2085 find_beginning();
a52eba0e
NC
2086 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2087 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2088 }
f4c556ac 2089 }
6224f72b 2090
561b68a9 2091 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2092 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2093 CvUNIQUE_on(PL_compcv);
2094
dd2155a4 2095 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2096
0c4f7ff0 2097 boot_core_PerlIO();
6224f72b 2098 boot_core_UNIVERSAL();
09bef843 2099 boot_core_xsutils();
6224f72b
GS
2100
2101 if (xsinit)
acfe0abc 2102 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2103#ifndef PERL_MICRO
d0d72822 2104#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2105 init_os_extras();
6224f72b 2106#endif
64ca3a65 2107#endif
6224f72b 2108
29209bc5 2109#ifdef USE_SOCKS
1b9c9cf5
DH
2110# ifdef HAS_SOCKS5_INIT
2111 socks5_init(argv[0]);
2112# else
29209bc5 2113 SOCKSinit(argv[0]);
1b9c9cf5 2114# endif
ac27b0f5 2115#endif
29209bc5 2116
6224f72b
GS
2117 init_predump_symbols();
2118 /* init_postdump_symbols not currently designed to be called */
2119 /* more than once (ENV isn't cleared first, for example) */
2120 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2121 if (!PL_do_undump)
6224f72b
GS
2122 init_postdump_symbols(argc,argv,env);
2123
27da23d5
JH
2124 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2125 * or explicitly in some platforms.
085a54d9 2126 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2127 * look like the user wants to use UTF-8. */
a0fd4948 2128#if defined(__SYMBIAN32__)
27da23d5
JH
2129 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2130#endif
06e66572
JH
2131 if (PL_unicode) {
2132 /* Requires init_predump_symbols(). */
a05d7ebb 2133 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2134 IO* io;
2135 PerlIO* fp;
2136 SV* sv;
2137
a05d7ebb 2138 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2139 * and the default open disciplines. */
a05d7ebb
JH
2140 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2141 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2142 (fp = IoIFP(io)))
2143 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2144 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2145 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2146 (fp = IoOFP(io)))
2147 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2148 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2149 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2150 (fp = IoOFP(io)))
2151 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2152 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2153 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2154 SVt_PV)))) {
a05d7ebb
JH
2155 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2156 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2157 if (in) {
2158 if (out)
2159 sv_setpvn(sv, ":utf8\0:utf8", 11);
2160 else
2161 sv_setpvn(sv, ":utf8\0", 6);
2162 }
2163 else if (out)
2164 sv_setpvn(sv, "\0:utf8", 6);
2165 SvSETMAGIC(sv);
2166 }
b310b053
JH
2167 }
2168 }
2169
4ffa73a3
JH
2170 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2171 if (strEQ(s, "unsafe"))
2172 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2173 else if (strEQ(s, "safe"))
2174 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2175 else
2176 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2177 }
2178
6224f72b
GS
2179 init_lexer();
2180
2181 /* now parse the script */
2182
93189314 2183 SETERRNO(0,SS_NORMAL);
3280af22 2184 PL_error_count = 0;
bf4acbe4
GS
2185#ifdef MACOS_TRADITIONAL
2186 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2187 if (PL_minus_c)
2188 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2189 else {
2190 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2191 MacPerl_MPWFileName(PL_origfilename));
2192 }
2193 }
2194#else
3280af22
NIS
2195 if (yyparse() || PL_error_count) {
2196 if (PL_minus_c)
cea2e8a9 2197 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2198 else {
cea2e8a9 2199 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2200 PL_origfilename);
6224f72b
GS
2201 }
2202 }
bf4acbe4 2203#endif
57843af0 2204 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2205 PL_curstash = PL_defstash;
2206 PL_preprocess = FALSE;
2207 if (PL_e_script) {
2208 SvREFCNT_dec(PL_e_script);
a0714e2c 2209 PL_e_script = NULL;
6224f72b
GS
2210 }
2211
3280af22 2212 if (PL_do_undump)
6224f72b
GS
2213 my_unexec();
2214
57843af0
GS
2215 if (isWARN_ONCE) {
2216 SAVECOPFILE(PL_curcop);
2217 SAVECOPLINE(PL_curcop);
3280af22 2218 gv_check(PL_defstash);
57843af0 2219 }
6224f72b
GS
2220
2221 LEAVE;
2222 FREETMPS;
2223
2224#ifdef MYMALLOC
2225 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2226 dump_mstats("after compilation:");
2227#endif
2228
2229 ENTER;
3280af22 2230 PL_restartop = 0;
312caa8e 2231 return NULL;
6224f72b
GS
2232}
2233
954c1994
GS
2234/*
2235=for apidoc perl_run
2236
2237Tells a Perl interpreter to run. See L<perlembed>.
2238
2239=cut
2240*/
2241
6224f72b 2242int
0cb96387 2243perl_run(pTHXx)
6224f72b 2244{
97aff369 2245 dVAR;
6224f72b 2246 I32 oldscope;
14dd3ad8 2247 int ret = 0;
db36c5a1 2248 dJMPENV;
6224f72b 2249
96a5add6 2250 PERL_UNUSED_CONTEXT;
9d4ba2ae 2251
3280af22 2252 oldscope = PL_scopestack_ix;
96e176bf
CL
2253#ifdef VMS
2254 VMSISH_HUSHED = 0;
2255#endif
6224f72b 2256
14dd3ad8 2257 JMPENV_PUSH(ret);
6224f72b
GS
2258 switch (ret) {
2259 case 1:
2260 cxstack_ix = -1; /* start context stack again */
312caa8e 2261 goto redo_body;
14dd3ad8 2262 case 0: /* normal completion */
14dd3ad8
GS
2263 redo_body:
2264 run_body(oldscope);
14dd3ad8
GS
2265 /* FALL THROUGH */
2266 case 2: /* my_exit() */
3280af22 2267 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2268 LEAVE;
2269 FREETMPS;
3280af22 2270 PL_curstash = PL_defstash;
3a1ee7e8 2271 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2272 PL_endav && !PL_minus_c)
2273 call_list(oldscope, PL_endav);
6224f72b
GS
2274#ifdef MYMALLOC
2275 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2276 dump_mstats("after execution: ");
2277#endif
37038d91 2278 ret = STATUS_EXIT;
14dd3ad8 2279 break;
6224f72b 2280 case 3:
312caa8e
CS
2281 if (PL_restartop) {
2282 POPSTACK_TO(PL_mainstack);
2283 goto redo_body;
6224f72b 2284 }
bf49b057 2285 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2286 FREETMPS;
14dd3ad8
GS
2287 ret = 1;
2288 break;
6224f72b
GS
2289 }
2290
14dd3ad8
GS
2291 JMPENV_POP;
2292 return ret;
312caa8e
CS
2293}
2294
14dd3ad8 2295
dd374669 2296STATIC void
14dd3ad8
GS
2297S_run_body(pTHX_ I32 oldscope)
2298{
97aff369 2299 dVAR;
6224f72b 2300 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2301 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2302
3280af22 2303 if (!PL_restartop) {
6224f72b 2304 DEBUG_x(dump_all());
cf2782cd 2305#ifdef DEBUGGING
ecae49c0
NC
2306 if (!DEBUG_q_TEST)
2307 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2308#endif
b900a521
JH
2309 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2310 PTR2UV(thr)));
6224f72b 2311
3280af22 2312 if (PL_minus_c) {
bf4acbe4 2313#ifdef MACOS_TRADITIONAL
e69a2255
JH
2314 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2315 (gMacPerl_ErrorFormat ? "# " : ""),
2316 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2317#else
bf49b057 2318 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2319#endif
6224f72b
GS
2320 my_exit(0);
2321 }
3280af22 2322 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2323 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2324 if (PL_initav)
2325 call_list(oldscope, PL_initav);
6224f72b
GS
2326 }
2327
2328 /* do it */
2329
3280af22 2330 if (PL_restartop) {
533c011a 2331 PL_op = PL_restartop;
3280af22 2332 PL_restartop = 0;
cea2e8a9 2333 CALLRUNOPS(aTHX);
6224f72b 2334 }
3280af22
NIS
2335 else if (PL_main_start) {
2336 CvDEPTH(PL_main_cv) = 1;
533c011a 2337 PL_op = PL_main_start;
cea2e8a9 2338 CALLRUNOPS(aTHX);
6224f72b 2339 }
f6b3007c
JH
2340 my_exit(0);
2341 /* NOTREACHED */
6224f72b
GS
2342}
2343
954c1994 2344/*
ccfc67b7
JH
2345=head1 SV Manipulation Functions
2346
954c1994
GS
2347=for apidoc p||get_sv
2348
2349Returns the SV of the specified Perl scalar. If C<create> is set and the
2350Perl variable does not exist then it will be created. If C<create> is not
2351set and the variable does not exist then NULL is returned.
2352
2353=cut
2354*/
2355
6224f72b 2356SV*
864dbfa3 2357Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2358{
2359 GV *gv;
6224f72b
GS
2360 gv = gv_fetchpv(name, create, SVt_PV);
2361 if (gv)
2362 return GvSV(gv);
a0714e2c 2363 return NULL;
6224f72b
GS
2364}
2365
954c1994 2366/*
ccfc67b7
JH
2367=head1 Array Manipulation Functions
2368
954c1994
GS
2369=for apidoc p||get_av
2370
2371Returns the AV of the specified Perl array. If C<create> is set and the
2372Perl variable does not exist then it will be created. If C<create> is not
2373set and the variable does not exist then NULL is returned.
2374
2375=cut
2376*/
2377
6224f72b 2378AV*
864dbfa3 2379Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2380{
c4420975 2381 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2382 if (create)
2383 return GvAVn(gv);
2384 if (gv)
2385 return GvAV(gv);
7d49f689 2386 return NULL;
6224f72b
GS
2387}
2388
954c1994 2389/*
ccfc67b7
JH
2390=head1 Hash Manipulation Functions
2391
954c1994
GS
2392=for apidoc p||get_hv
2393
2394Returns the HV of the specified Perl hash. If C<create> is set and the
2395Perl variable does not exist then it will be created. If C<create> is not
2396set and the variable does not exist then NULL is returned.
2397
2398=cut
2399*/
2400
6224f72b 2401HV*
864dbfa3 2402Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2403{
890ce7af 2404 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2405 if (create)
2406 return GvHVn(gv);
2407 if (gv)
2408 return GvHV(gv);
5c284bb0 2409 return NULL;
a0d0e21e
LW
2410}
2411
954c1994 2412/*
ccfc67b7
JH
2413=head1 CV Manipulation Functions
2414
954c1994
GS
2415=for apidoc p||get_cv
2416
2417Returns the CV of the specified Perl subroutine. If C<create> is set and
2418the Perl subroutine does not exist then it will be declared (which has the
2419same effect as saying C<sub name;>). If C<create> is not set and the
2420subroutine does not exist then NULL is returned.
2421
2422=cut
2423*/
2424
a0d0e21e 2425CV*
864dbfa3 2426Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2427{
c4420975 2428 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2429 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2430 /* XXX this is probably not what they think they're getting.
2431 * It has the same effect as "sub name;", i.e. just a forward
2432 * declaration! */
8ebc5c01 2433 if (create && !GvCVu(gv))
774d564b 2434 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2435 newSVOP(OP_CONST, 0, newSVpv(name,0)),
5f66b61c 2436 NULL, NULL);
a0d0e21e 2437 if (gv)
8ebc5c01 2438 return GvCVu(gv);
601f1833 2439 return NULL;
a0d0e21e
LW
2440}
2441
79072805
LW
2442/* Be sure to refetch the stack pointer after calling these routines. */
2443
954c1994 2444/*
ccfc67b7
JH
2445
2446=head1 Callback Functions
2447
954c1994
GS
2448=for apidoc p||call_argv
2449
2450Performs a callback to the specified Perl sub. See L<perlcall>.
2451
2452=cut
2453*/
2454
a0d0e21e 2455I32
8f42b153 2456Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2457
8ac85365
NIS
2458 /* See G_* flags in cop.h */
2459 /* null terminated arg list */
8990e307 2460{
97aff369 2461 dVAR;
a0d0e21e 2462 dSP;
8990e307 2463
924508f0 2464 PUSHMARK(SP);
a0d0e21e 2465 if (argv) {
8990e307 2466 while (*argv) {
a0d0e21e 2467 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2468 argv++;
2469 }
a0d0e21e 2470 PUTBACK;
8990e307 2471 }
864dbfa3 2472 return call_pv(sub_name, flags);
8990e307
LW
2473}
2474
954c1994
GS
2475/*
2476=for apidoc p||call_pv
2477
2478Performs a callback to the specified Perl sub. See L<perlcall>.
2479
2480=cut
2481*/
2482
a0d0e21e 2483I32
864dbfa3 2484Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2485 /* name of the subroutine */
2486 /* See G_* flags in cop.h */
a0d0e21e 2487{
864dbfa3 2488 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2489}
2490
954c1994
GS
2491/*
2492=for apidoc p||call_method
2493
2494Performs a callback to the specified Perl method. The blessed object must
2495be on the stack. See L<perlcall>.
2496
2497=cut
2498*/
2499
a0d0e21e 2500I32
864dbfa3 2501Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2502 /* name of the subroutine */
2503 /* See G_* flags in cop.h */
a0d0e21e 2504{
968b3946 2505 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2506}
2507
2508/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2509/*
2510=for apidoc p||call_sv
2511
2512Performs a callback to the Perl sub whose name is in the SV. See
2513L<perlcall>.
2514
2515=cut
2516*/
2517
a0d0e21e 2518I32
864dbfa3 2519Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2520 /* See G_* flags in cop.h */
a0d0e21e 2521{
27da23d5 2522 dVAR; dSP;
a0d0e21e 2523 LOGOP myop; /* fake syntax tree node */
968b3946 2524 UNOP method_op;
aa689395 2525 I32 oldmark;
13689cfe 2526 volatile I32 retval = 0;
a0d0e21e 2527 I32 oldscope;
54310121 2528 bool oldcatch = CATCH_GET;
6224f72b 2529 int ret;
c4420975 2530 OP* const oldop = PL_op;
db36c5a1 2531 dJMPENV;
1e422769 2532
a0d0e21e
LW
2533 if (flags & G_DISCARD) {
2534 ENTER;
2535 SAVETMPS;
2536 }
2537
aa689395 2538 Zero(&myop, 1, LOGOP);
5f66b61c 2539 myop.op_next = NULL;
f51d4af5 2540 if (!(flags & G_NOARGS))
aa689395 2541 myop.op_flags |= OPf_STACKED;
54310121
PP
2542 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2543 (flags & G_ARRAY) ? OPf_WANT_LIST :
2544 OPf_WANT_SCALAR);
462e5cf6 2545 SAVEOP();
533c011a 2546 PL_op = (OP*)&myop;
aa689395 2547
3280af22
NIS
2548 EXTEND(PL_stack_sp, 1);
2549 *++PL_stack_sp = sv;
aa689395 2550 oldmark = TOPMARK;
3280af22 2551 oldscope = PL_scopestack_ix;
a0d0e21e 2552
3280af22 2553 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2554 /* Handle first BEGIN of -d. */
3280af22 2555 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2556 /* Try harder, since this may have been a sighandler, thus
2557 * curstash may be meaningless. */
3280af22 2558 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2559 && !(flags & G_NODEBUG))
533c011a 2560 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2561
968b3946
GS
2562 if (flags & G_METHOD) {
2563 Zero(&method_op, 1, UNOP);
2564 method_op.op_next = PL_op;
2565 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2566 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2567 PL_op = (OP*)&method_op;
968b3946
GS
2568 }
2569
312caa8e 2570 if (!(flags & G_EVAL)) {
0cdb2077 2571 CATCH_SET(TRUE);
14dd3ad8 2572 call_body((OP*)&myop, FALSE);
312caa8e 2573 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2574 CATCH_SET(oldcatch);
312caa8e
CS
2575 }
2576 else {
d78bda3d 2577 myop.op_other = (OP*)&myop;
3280af22 2578 PL_markstack_ptr--;
4633a7c4
LW
2579 /* we're trying to emulate pp_entertry() here */
2580 {
c09156bb 2581 register PERL_CONTEXT *cx;
f54cb97a 2582 const I32 gimme = GIMME_V;
ac27b0f5 2583
4633a7c4
LW
2584 ENTER;
2585 SAVETMPS;
ac27b0f5 2586
1d76a5c3 2587 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2588 PUSHEVAL(cx, 0, 0);
533c011a 2589 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2590
faef0170 2591 PL_in_eval = EVAL_INEVAL;
4633a7c4 2592 if (flags & G_KEEPERR)
faef0170 2593 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2594 else
c69006e4 2595 sv_setpvn(ERRSV,"",0);
4633a7c4 2596 }
3280af22 2597 PL_markstack_ptr++;
a0d0e21e 2598
14dd3ad8 2599 JMPENV_PUSH(ret);
6224f72b
GS
2600 switch (ret) {
2601 case 0:
14dd3ad8
GS
2602 redo_body:
2603 call_body((OP*)&myop, FALSE);
312caa8e
CS
2604 retval = PL_stack_sp - (PL_stack_base + oldmark);
2605 if (!(flags & G_KEEPERR))
c69006e4 2606 sv_setpvn(ERRSV,"",0);
a0d0e21e 2607 break;
6224f72b 2608 case 1:
f86702cc 2609 STATUS_ALL_FAILURE;
a0d0e21e 2610 /* FALL THROUGH */
6224f72b 2611 case 2:
a0d0e21e 2612 /* my_exit() was called */
3280af22 2613 PL_curstash = PL_defstash;
a0d0e21e 2614 FREETMPS;
14dd3ad8 2615 JMPENV_POP;
cc3604b1 2616 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2617 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2618 my_exit_jump();
a0d0e21e 2619 /* NOTREACHED */
6224f72b 2620 case 3:
3280af22 2621 if (PL_restartop) {
533c011a 2622 PL_op = PL_restartop;
3280af22 2623 PL_restartop = 0;
312caa8e 2624 goto redo_body;
a0d0e21e 2625 }
3280af22 2626 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2627 if (flags & G_ARRAY)
2628 retval = 0;
2629 else {
2630 retval = 1;
3280af22 2631 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2632 }
312caa8e 2633 break;
a0d0e21e 2634 }
a0d0e21e 2635
3280af22 2636 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2637 SV **newsp;
2638 PMOP *newpm;
2639 I32 gimme;
c09156bb 2640 register PERL_CONTEXT *cx;
a0a2876f
LW
2641 I32 optype;
2642
2643 POPBLOCK(cx,newpm);
2644 POPEVAL(cx);
3280af22 2645 PL_curpm = newpm;
a0a2876f 2646 LEAVE;
9d4ba2ae
AL
2647 PERL_UNUSED_VAR(newsp);
2648 PERL_UNUSED_VAR(gimme);
2649 PERL_UNUSED_VAR(optype);
a0d0e21e 2650 }
14dd3ad8 2651 JMPENV_POP;
a0d0e21e 2652 }
1e422769 2653
a0d0e21e 2654 if (flags & G_DISCARD) {
3280af22 2655 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2656 retval = 0;
2657 FREETMPS;
2658 LEAVE;
2659 }
533c011a 2660 PL_op = oldop;
a0d0e21e
LW
2661 return retval;
2662}
2663
312caa8e 2664STATIC void
dd374669 2665S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2666{
97aff369 2667 dVAR;
312caa8e
CS
2668 if (PL_op == myop) {
2669 if (is_eval)
f807eda9 2670 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2671 else
f807eda9 2672 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2673 }
2674 if (PL_op)
cea2e8a9 2675 CALLRUNOPS(aTHX);
312caa8e
CS
2676}
2677
6e72f9df 2678/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2679
954c1994
GS
2680/*
2681=for apidoc p||eval_sv
2682
2683Tells Perl to C<eval> the string in the SV.
2684
2685=cut
2686*/
2687
a0d0e21e 2688I32
864dbfa3 2689Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2690
8ac85365 2691 /* See G_* flags in cop.h */
a0d0e21e 2692{
97aff369 2693 dVAR;
924508f0 2694 dSP;
a0d0e21e 2695 UNOP myop; /* fake syntax tree node */
8fa7f367 2696 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2697 volatile I32 retval = 0;
6224f72b 2698 int ret;
c4420975 2699 OP* const oldop = PL_op;
db36c5a1 2700 dJMPENV;
84902520 2701
4633a7c4
LW
2702 if (flags & G_DISCARD) {
2703 ENTER;
2704 SAVETMPS;
2705 }
2706
462e5cf6 2707 SAVEOP();
533c011a
NIS
2708 PL_op = (OP*)&myop;
2709 Zero(PL_op, 1, UNOP);
3280af22
NIS
2710 EXTEND(PL_stack_sp, 1);
2711 *++PL_stack_sp = sv;
79072805 2712
4633a7c4
LW
2713 if (!(flags & G_NOARGS))
2714 myop.op_flags = OPf_STACKED;
5f66b61c 2715 myop.op_next = NULL;
6e72f9df 2716 myop.op_type = OP_ENTEREVAL;
54310121
PP
2717 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2718 (flags & G_ARRAY) ? OPf_WANT_LIST :
2719 OPf_WANT_SCALAR);
6e72f9df
PP
2720 if (flags & G_KEEPERR)
2721 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2722
dedbcade
DM
2723 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2724 * before a PUSHEVAL, which corrupts the stack after a croak */
2725 TAINT_PROPER("eval_sv()");
2726
14dd3ad8 2727 JMPENV_PUSH(ret);
6224f72b
GS
2728 switch (ret) {
2729 case 0:
14dd3ad8
GS
2730 redo_body:
2731 call_body((OP*)&myop,TRUE);
312caa8e
CS
2732 retval = PL_stack_sp - (PL_stack_base + oldmark);
2733 if (!(flags & G_KEEPERR))
c69006e4 2734 sv_setpvn(ERRSV,"",0);
4633a7c4 2735 break;
6224f72b 2736 case 1:
f86702cc 2737 STATUS_ALL_FAILURE;
4633a7c4 2738 /* FALL THROUGH */
6224f72b 2739 case 2:
4633a7c4 2740 /* my_exit() was called */
3280af22 2741 PL_curstash = PL_defstash;
4633a7c4 2742 FREETMPS;
14dd3ad8 2743 JMPENV_POP;
cc3604b1 2744 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2745 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2746 my_exit_jump();
4633a7c4 2747 /* NOTREACHED */
6224f72b 2748 case 3:
3280af22 2749 if (PL_restartop) {
533c011a 2750 PL_op = PL_restartop;
3280af22 2751 PL_restartop = 0;
312caa8e 2752 goto redo_body;
4633a7c4 2753 }
3280af22 2754 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2755 if (flags & G_ARRAY)
2756 retval = 0;
2757 else {
2758 retval = 1;
3280af22 2759 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2760 }
312caa8e 2761 break;
4633a7c4
LW
2762 }
2763
14dd3ad8 2764 JMPENV_POP;
4633a7c4 2765 if (flags & G_DISCARD) {
3280af22 2766 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2767 retval = 0;
2768 FREETMPS;
2769 LEAVE;
2770 }
533c011a 2771 PL_op = oldop;
4633a7c4
LW
2772 return retval;
2773}
2774
954c1994
GS
2775/*
2776=for apidoc p||eval_pv
2777
2778Tells Perl to C<eval> the given string and return an SV* result.
2779
2780=cut
2781*/
2782
137443ea 2783SV*
864dbfa3 2784Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2785{
97aff369 2786 dVAR;
137443ea
PP
2787 dSP;
2788 SV* sv = newSVpv(p, 0);
2789
864dbfa3 2790 eval_sv(sv, G_SCALAR);
137443ea
PP
2791 SvREFCNT_dec(sv);
2792
2793 SPAGAIN;
2794 sv = POPs;
2795 PUTBACK;
2796
2d8e6c8d 2797 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2798 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2799 }
137443ea
PP
2800
2801 return sv;
2802}
2803
4633a7c4
LW
2804/* Require a module. */
2805
954c1994 2806/*
ccfc67b7
JH
2807=head1 Embedding Functions
2808
954c1994
GS
2809=for apidoc p||require_pv
2810
7d3fb230
BS
2811Tells Perl to C<require> the file named by the string argument. It is
2812analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2813implemented that way; consider using load_module instead.
954c1994 2814
7d3fb230 2815=cut */
954c1994 2816
4633a7c4 2817void
864dbfa3 2818Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2819{
97aff369 2820 dVAR;
d3acc0f7 2821 dSP;
97aff369 2822 SV* sv;
e788e7d3 2823 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2824 PUTBACK;
be41e5d9
NC
2825 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2826 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2827 SPAGAIN;
2828 POPSTACK;
79072805
LW
2829}
2830
79072805 2831void
e1ec3a88 2832Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2833{
71315bf2 2834 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2835
c4420975 2836 if (gv)
14befaf4 2837 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2838}
2839
76e3520e 2840STATIC void
e1ec3a88 2841S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2842{
ab821d7f 2843 /* This message really ought to be max 23 lines.
75c72d73 2844 * Removed -h because the user already knows that option. Others? */
fb73857a 2845
27da23d5 2846 static const char * const usage_msg[] = {
aefc56c5
SF
2847"-0[octal] specify record separator (\\0, if no argument)",
2848"-A[mod][=pattern] activate all/given assertions",
2849"-a autosplit mode with -n or -p (splits $_ into @F)",
2850"-C[number/list] enables the listed Unicode features",
2851"-c check syntax only (runs BEGIN and CHECK blocks)",
2852"-d[:debugger] run program under debugger",
2853"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2854"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2855"-E program like -e, but enables all optional features",
aefc56c5 2856"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2857"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2858"-i[extension] edit <> files in place (makes backup if extension supplied)",
2859"-Idirectory specify @INC/#include directory (several -I's allowed)",
2860"-l[octal] enable line ending processing, specifies line terminator",
2861"-[mM][-]module execute \"use/no module...\" before executing program",
2862"-n assume \"while (<>) { ... }\" loop around program",
2863"-p assume loop like -n but print line also, like sed",
2864"-P run program through C preprocessor before compilation",
2865"-s enable rudimentary parsing for switches after programfile",
2866"-S look for programfile using PATH environment variable",
2867"-t enable tainting warnings",
2868"-T enable tainting checks",
2869"-u dump core after parsing program",
2870"-U allow unsafe operations",
2871"-v print version, subversion (includes VERY IMPORTANT perl info)",
2872"-V[:variable] print configuration summary (or a single Config.pm variable)",
2873"-w enable many useful warnings (RECOMMENDED)",
2874"-W enable all warnings",
2875"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2876"-X disable all warnings",
fb73857a
PP
2877"\n",
2878NULL
2879};
27da23d5 2880 const char * const *p = usage_msg;
fb73857a 2881
b0e47665
GS
2882 PerlIO_printf(PerlIO_stdout(),
2883 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2884 name);
fb73857a 2885 while (*p)
b0e47665 2886 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2887}
2888
b4ab917c
DM
2889/* convert a string of -D options (or digits) into an int.
2890 * sets *s to point to the char after the options */
2891
2892#ifdef DEBUGGING
2893int
e1ec3a88 2894Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2895{
27da23d5 2896 static const char * const usage_msgd[] = {
e6e64d9b
JC
2897 " Debugging flag values: (see also -d)",
2898 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2899 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2900 " l Context (loop) stack processing",
2901 " t Trace execution",
2902 " o Method and overloading resolution",
2903 " c String/numeric conversions",
2904 " P Print profiling info, preprocessor command for -P, source file input state",
2905 " m Memory allocation",
2906 " f Format processing",
2907 " r Regular expression parsing and execution",
2908 " x Syntax tree dump",
3679267a 2909 " u Tainting checks",
e6e64d9b
JC
2910 " H Hash dump -- usurps values()",
2911 " X Scratchpad allocation",
2912 " D Cleaning up",
2913 " S Thread synchronization",
2914 " T Tokenising",
2915 " R Include reference counts of dumped variables (eg when using -Ds)",
2916 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2917 " v Verbose: use in conjunction with other flags",
2918 " C Copy On Write",
2919 " A Consistency checks on internal structures",
3679267a 2920 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2921 NULL
2922 };
b4ab917c
DM
2923 int i = 0;
2924 if (isALPHA(**s)) {
2925 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2926 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2927
2928 for (; isALNUM(**s); (*s)++) {
c4420975 2929 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2930 if (d)
2931 i |= 1 << (d - debopts);
2932 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2933 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2934 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2935 }
2936 }
e6e64d9b 2937 else if (isDIGIT(**s)) {
b4ab917c
DM
2938 i = atoi(*s);
2939 for (; isALNUM(**s); (*s)++) ;
2940 }
ddcf8bc1 2941 else if (givehelp) {
06e869a4 2942 const char *const *p = usage_msgd;
e6e64d9b
JC
2943 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2944 }
b4ab917c
DM
2945# ifdef EBCDIC
2946 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2947 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2948 "-Dp not implemented on this platform\n");
2949# endif
2950 return i;
2951}
2952#endif
2953
79072805
LW
2954/* This routine handles any switches that can be given during run */
2955
2956char *
97bd5664 2957Perl_moreswitches(pTHX_ char *s)
79072805 2958{
27da23d5 2959 dVAR;
84c133a0 2960 UV rschar;
79072805
LW
2961
2962 switch (*s) {
2963 case '0':
a863c7d1 2964 {
f2095865 2965 I32 flags = 0;
a3b680e6 2966 STRLEN numlen;
f2095865
JH
2967
2968 SvREFCNT_dec(PL_rs);
2969 if (s[1] == 'x' && s[2]) {
a3b680e6 2970 const char *e = s+=2;
f2095865
JH
2971 U8 *tmps;
2972
a3b680e6
AL
2973 while (*e)
2974 e++;
f2095865
JH
2975 numlen = e - s;
2976 flags = PERL_SCAN_SILENT_ILLDIGIT;
2977 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2978 if (s + numlen < e) {
2979 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2980 numlen = 0;
2981 s--;
2982 }
396482e1 2983 PL_rs = newSVpvs("");
c5661c80 2984 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2985 tmps = (U8*)SvPVX(PL_rs);
2986 uvchr_to_utf8(tmps, rschar);
2987 SvCUR_set(PL_rs, UNISKIP(rschar));
2988 SvUTF8_on(PL_rs);
2989 }
2990 else {
2991 numlen = 4;
2992 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2993 if (rschar & ~((U8)~0))
2994 PL_rs = &PL_sv_undef;
2995 else if (!rschar && numlen >= 2)
396482e1 2996 PL_rs = newSVpvs("");
f2095865
JH
2997 else {
2998 char ch = (char)rschar;
2999 PL_rs = newSVpvn(&ch, 1);
3000 }
3001 }
800633c3 3002 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3003 return s + numlen;
a863c7d1 3004 }
46487f74 3005 case 'C':
a05d7ebb 3006 s++;
dd374669 3007 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 3008 return s;
2304df62 3009 case 'F':
3280af22 3010 PL_minus_F = TRUE;
ebce5377
RGS
3011 PL_splitstr = ++s;
3012 while (*s && !isSPACE(*s)) ++s;
e49e380e 3013 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3014 return s;
79072805 3015 case 'a':
3280af22 3016 PL_minus_a = TRUE;
79072805
LW
3017 s++;
3018 return s;
3019 case 'c':
3280af22 3020 PL_minus_c = TRUE;
79072805
LW
3021 s++;
3022 return s;
3023 case 'd':
97bd5664 3024 forbid_setid('d', -1);
4633a7c4 3025 s++;
2cbb2ee1
RGS
3026
3027 /* -dt indicates to the debugger that threads will be used */
3028 if (*s == 't' && !isALNUM(s[1])) {
3029 ++s;
3030 my_setenv("PERL5DB_THREADED", "1");
3031 }
3032
70c94a19
RR
3033 /* The following permits -d:Mod to accepts arguments following an =
3034 in the fashion that -MSome::Mod does. */
3035 if (*s == ':' || *s == '=') {
06b5626a 3036 const char *start;
396482e1 3037 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3038 start = ++s;
3039 /* We now allow -d:Module=Foo,Bar */
3040 while(isALNUM(*s) || *s==':') ++s;
3041 if (*s != '=')
3042 sv_catpv(sv, start);
3043 else {
3044 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3045 /* Don't use NUL as q// delimiter here, this string goes in the
3046 * environment. */
3047 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3048 }
4633a7c4 3049 s += strlen(s);
184f32ec 3050 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3051 }
ed094faf 3052 if (!PL_perldb) {
3280af22 3053 PL_perldb = PERLDB_ALL;
a0d0e21e 3054 init_debugger();
ed094faf 3055 }
79072805
LW
3056 return s;
3057 case 'D':
0453d815 3058 {
79072805 3059#ifdef DEBUGGING
97bd5664 3060 forbid_setid('D', -1);
b4ab917c 3061 s++;
dd374669 3062 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3063#else /* !DEBUGGING */
0453d815 3064 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3065 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3066 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3067 for (s++; isALNUM(*s); s++) ;
79072805 3068#endif
79072805 3069 return s;
0453d815 3070 }
4633a7c4 3071 case 'h':
ac27b0f5 3072 usage(PL_origargv[0]);
7ca617d0 3073 my_exit(0);
79072805 3074 case 'i':
43c5f42d 3075 Safefree(PL_inplace);
c030f24b
GH
3076#if defined(__CYGWIN__) /* do backup extension automagically */
3077 if (*(s+1) == '\0') {
c86a4f2e 3078 PL_inplace = savepvs(".bak");
c030f24b
GH
3079 return s+1;
3080 }
3081#endif /* __CYGWIN__ */
3280af22 3082 PL_inplace = savepv(s+1);
a6e20a40
AL
3083 for (s = PL_inplace; *s && !isSPACE(*s); s++)
3084 ;
7b8d334a 3085 if (*s) {
fb73857a 3086 *s++ = '\0';
7b8d334a
GS
3087 if (*s == '-') /* Additional switches on #! line. */
3088 s++;
3089 }
fb73857a 3090 return s;
4e49a025 3091 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3092 forbid_setid('I', -1);
fb73857a
PP
3093 ++s;
3094 while (*s && isSPACE(*s))
3095 ++s;
3096 if (*s) {
774d564b 3097 char *e, *p;
0df16ed7
GS
3098 p = s;
3099 /* ignore trailing spaces (possibly followed by other switches) */
3100 do {
3101 for (e = p; *e && !isSPACE(*e); e++) ;
3102 p = e;
3103 while (isSPACE(*p))
3104 p++;
3105 } while (*p && *p != '-');
3106 e = savepvn(s, e-s);
88fe16b2 3107 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3108 Safefree(e);
3109 s = p;
3110 if (*s == '-')
3111 s++;
79072805
LW
3112 }
3113 else
a67e862a 3114 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3115 return s;
79072805 3116 case 'l':
3280af22 3117 PL_minus_l = TRUE;
79072805 3118 s++;
7889fe52
NIS
3119 if (PL_ors_sv) {
3120 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3121 PL_ors_sv = NULL;
7889fe52 3122 }
79072805 3123 if (isDIGIT(*s)) {
53305cf1 3124 I32 flags = 0;
a3b680e6 3125 STRLEN numlen;
396482e1 3126 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3127 numlen = 3 + (*s == '0');
3128 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3129 s += numlen;
3130 }
3131 else {
8bfdd7d9 3132 if (RsPARA(PL_rs)) {
396482e1 3133 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3134 }
3135 else {
8bfdd7d9 3136 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3137 }
79072805
LW
3138 }
3139 return s;
06492da6 3140 case 'A':
97bd5664 3141 forbid_setid('A', -1);
930366bd
RGS
3142 if (!PL_preambleav)
3143 PL_preambleav = newAV();
aefc56c5
SF
3144 s++;
3145 {
44f8325f 3146 char * const start = s;
396482e1 3147 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3148 while(isALNUM(*s) || *s == ':') ++s;
3149 if (s != start) {
396482e1 3150 sv_catpvs(sv, "::");
aefc56c5
SF
3151 sv_catpvn(sv, start, s-start);
3152 }
3153 if (*s == '=') {
0c5a913d 3154 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3155 s+=strlen(s);
3156 }
3157 else if (*s != '\0') {
551405c4 3158 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3159 }
06492da6 3160 av_push(PL_preambleav, sv);
aefc56c5 3161 return s;
06492da6 3162 }
1a30305b 3163 case 'M':
97bd5664 3164 forbid_setid('M', -1); /* XXX ? */
1a30305b
PP
3165 /* FALL THROUGH */
3166 case 'm':
97bd5664 3167 forbid_setid('m', -1); /* XXX ? */
1a30305b 3168 if (*++s) {
a5f75d66 3169 char *start;
11343788 3170 SV *sv;
e1ec3a88 3171 const char *use = "use ";
a5f75d66 3172 /* -M-foo == 'no foo' */
d0043bd1
NC
3173 /* Leading space on " no " is deliberate, to make both
3174 possibilities the same length. */
3175 if (*s == '-') { use = " no "; ++s; }
3176 sv = newSVpvn(use,4);
a5f75d66 3177 start = s;
1a30305b 3178 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3179 while(isALNUM(*s) || *s==':') ++s;
3180 if (*s != '=') {
11343788 3181 sv_catpv(sv, start);
c07a80fd
PP
3182 if (*(start-1) == 'm') {
3183 if (*s != '\0')
cea2e8a9 3184 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3185 sv_catpvs( sv, " ()");
c07a80fd
PP
3186 }
3187 } else {
6df41af2 3188 if (s == start)
be98fb35
GS
3189 Perl_croak(aTHX_ "Module name required with -%c option",
3190 s[-1]);
11343788 3191 sv_catpvn(sv, start, s-start);
396482e1
GA
3192 sv_catpvs(sv, " split(/,/,q");
3193 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3194 sv_catpv(sv, ++s);
396482e1 3195 sv_catpvs(sv, "\0)");
c07a80fd 3196 }
1a30305b 3197 s += strlen(s);
5c831c24 3198 if (!PL_preambleav)
3280af22
NIS
3199 PL_preambleav = newAV();
3200 av_push(PL_preambleav, sv);
1a30305b
PP
3201 }
3202 else
9e81e6a1 3203 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3204 return s;
79072805 3205 case 'n':
3280af22 3206 PL_minus_n = TRUE;
79072805
LW
3207 s++;
3208 return s;
3209 case 'p':
3280af22 3210 PL_minus_p = TRUE;
79072805
LW
3211 s++;
3212 return s;
3213 case 's':
97bd5664 3214 forbid_setid('s', -1);
3280af22 3215 PL_doswitches = TRUE;
79072805
LW
3216 s++;
3217 return s;
6537fe72
MS
3218 case 't':
3219 if (!PL_tainting)
22f7c9c9 3220 TOO_LATE_FOR('t');
6537fe72
MS
3221 s++;
3222 return s;
463ee0b2 3223 case 'T':
3280af22 3224 if (!PL_tainting)
22f7c9c9 3225 TOO_LATE_FOR('T');
463ee0b2
LW
3226 s++;
3227 return s;
79072805 3228 case 'u':
bf4acbe4
GS
3229#ifdef MACOS_TRADITIONAL
3230 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3231#endif
3280af22 3232 PL_do_undump = TRUE;
79072805
LW
3233 s++;
3234 return s;
3235 case 'U':
3280af22 3236 PL_unsafe = TRUE;
79072805
LW
3237 s++;
3238 return s;
3239 case 'v':
d7aa5382 3240 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3241 upg_version(PL_patchlevel);
8e9464f1 3242#if !defined(DGUX)
b0e47665 3243 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3244 Perl_form(aTHX_ "\nThis is perl, %"SVf
3245#ifdef PERL_PATCHNUM
3246 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3247#endif
3248 " built for %s",
d7aa5382
JP
3249 vstringify(PL_patchlevel),
3250 ARCHNAME));
8e9464f1
JH
3251#else /* DGUX */
3252/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3253 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3254 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3255 vstringify(PL_patchlevel)));
8e9464f1
JH
3256 PerlIO_printf(PerlIO_stdout(),
3257 Perl_form(aTHX_ " built under %s at %s %s\n",
3258 OSNAME, __DATE__, __TIME__));
3259 PerlIO_printf(PerlIO_stdout(),
3260 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3261 OSVERS));
8e9464f1
JH
3262#endif /* !DGUX */
3263
fb73857a
PP
3264#if defined(LOCAL_PATCH_COUNT)
3265 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3266 PerlIO_printf(PerlIO_stdout(),
3267 "\n(with %d registered patch%s, "
3268 "see perl -V for more detail)",
3269 (int)LOCAL_PATCH_COUNT,
3270 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3271#endif
1a30305b 3272
b0e47665 3273 PerlIO_printf(PerlIO_stdout(),
3246d7a3 3274 "\n\nCopyright 1987-2006, Larry Wall\n");
eae9c151
JH
3275#ifdef MACOS_TRADITIONAL
3276 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3277 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3278 "maintained by Chris Nandor\n");
eae9c151 3279#endif
79072805 3280#ifdef MSDOS
b0e47665
GS
3281 PerlIO_printf(PerlIO_stdout(),
3282 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3283#endif
3284#ifdef DJGPP
b0e47665
GS
3285 PerlIO_printf(PerlIO_stdout(),
3286 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3287 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3288#endif
79072805 3289#ifdef OS2
b0e47665
GS
3290 PerlIO_printf(PerlIO_stdout(),
3291 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3292 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3293#endif
79072805 3294#ifdef atarist
b0e47665
GS
3295 PerlIO_printf(PerlIO_stdout(),
3296 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3297#endif
a3f9223b 3298#ifdef __BEOS__
b0e47665
GS
3299 PerlIO_printf(PerlIO_stdout(),
3300 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3301#endif
1d84e8df 3302#ifdef MPE
b0e47665 3303 PerlIO_printf(PerlIO_stdout(),
e583a879 3304 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3305#endif
9d116dd7 3306#ifdef OEMVS
b0e47665
GS
3307 PerlIO_printf(PerlIO_stdout(),
3308 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3309#endif
495c5fdc 3310#ifdef __VOS__
b0e47665 3311 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3312 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3313#endif
092bebab 3314#ifdef __OPEN_VM
b0e47665
GS
3315 PerlIO_printf(PerlIO_stdout(),
3316 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3317#endif
a1a0e61e 3318#ifdef POSIX_BC
b0e47665
GS
3319 PerlIO_printf(PerlIO_stdout(),
3320 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3321#endif
61ae2fbf 3322#ifdef __MINT__
b0e47665
GS
3323 PerlIO_printf(PerlIO_stdout(),
3324 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3325#endif
f83d2536 3326#ifdef EPOC
b0e47665 3327 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3328 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3329#endif
e1caacb4 3330#ifdef UNDER_CE
b475b3e6
JH
3331 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3332 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3333 wce_hitreturn();
3334#endif
a0fd4948 3335#ifdef __SYMBIAN32__
27da23d5
JH
3336 PerlIO_printf(PerlIO_stdout(),
3337 "Symbian port by Nokia, 2004-2005\n");
3338#endif
baed7233
DL
3339#ifdef BINARY_BUILD_NOTICE
3340 BINARY_BUILD_NOTICE;
3341#endif
b0e47665
GS
3342 PerlIO_printf(PerlIO_stdout(),
3343 "\n\
79072805 3344Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3345GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3346Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3347this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3348Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3349 my_exit(0);
79072805 3350 case 'w':
599cee73 3351 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3352 PL_dowarn |= G_WARN_ON;
599cee73
PM
3353 s++;
3354 return s;
3355 case 'W':
ac27b0f5 3356 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3357 if (!specialWARN(PL_compiling.cop_warnings))
3358 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3359 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3360 s++;
3361 return s;
3362 case 'X':
ac27b0f5 3363 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3364 if (!specialWARN(PL_compiling.cop_warnings))
3365 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3366 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3367 s++;
3368 return s;
a0d0e21e 3369 case '*':
79072805
LW
3370 case ' ':
3371 if (s[1] == '-') /* Additional switches on #! line. */
3372 return s+2;
3373 break;
a0d0e21e 3374 case '-':
79072805 3375 case 0:
51882d45 3376#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3377 case '\r':
3378#endif
79072805
LW
3379 case '\n':
3380 case '\t':
3381 break;
aa689395
PP
3382#ifdef ALTERNATE_SHEBANG
3383 case 'S': /* OS/2 needs -S on "extproc" line. */
3384 break;
3385#endif
a0d0e21e 3386 case 'P':
3280af22 3387 if (PL_preprocess)
a0d0e21e
LW
3388 return s+1;
3389 /* FALL THROUGH */
79072805 3390 default:
cea2e8a9 3391 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3392 }
bd61b366 3393 return NULL;
79072805
LW
3394}
3395
3396/* compliments of Tom Christiansen */
3397
3398/* unexec() can be found in the Gnu emacs distribution */
ee580363 3399/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3400
3401void
864dbfa3 3402Perl_my_unexec(pTHX)
79072805 3403{
b37c2d43 3404 PERL_UNUSED_CONTEXT;
79072805 3405#ifdef UNEXEC
b37c2d43
AL
3406 SV * prog = newSVpv(BIN_EXP, 0);
3407 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3408 int status = 1;
79072805
LW
3409 extern int etext;
3410
396482e1 3411 sv_catpvs(prog, "/perl");
396482e1 3412 sv_catpvs(file, ".perldump");
79072805 3413
ee580363
GS
3414 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3415 /* unexec prints msg to stderr in case of failure */
6ad3d225 3416 PerlProc_exit(status);
79072805 3417#else
a5f75d66
AD
3418# ifdef VMS
3419# include <lib$routines.h>
3420 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3421# elif defined(WIN32) || defined(__CYGWIN__)
3422 Perl_croak(aTHX_ "dump is not supported");
aa689395 3423# else
79072805 3424 ABORT(); /* for use with undump */
aa689395 3425# endif
a5f75d66 3426#endif
79072805
LW
3427}
3428
cb68f92d
GS
3429/* initialize curinterp */
3430STATIC void
cea2e8a9 3431S_init_interp(pTHX)
cb68f92d 3432{
97aff369 3433 dVAR;
acfe0abc
GS
3434#ifdef MULTIPLICITY
3435# define PERLVAR(var,type)
3436# define PERLVARA(var,n,type)
3437# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3438# define PERLVARI(var,type,init) aTHX->var = init;
3439# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3440# else
acfe0abc
GS
3441# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3442# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3443# endif
acfe0abc 3444# include "intrpvar.h"
b7f7fff6 3445# include "thrdvar.h"
acfe0abc
GS
3446# undef PERLVAR
3447# undef PERLVARA
3448# undef PERLVARI
3449# undef PERLVARIC
3450#else
3451# define PERLVAR(var,type)
3452# define PERLVARA(var,n,type)
3453# define PERLVARI(var,type,init) PL_##var = init;
3454# define PERLVARIC(var,type,init) PL_##var = init;
3455# include "intrpvar.h"
b7f7fff6 3456# include "thrdvar.h"
acfe0abc
GS
3457# undef PERLVAR
3458# undef PERLVARA
3459# undef PERLVARI
3460# undef PERLVARIC
cb68f92d
GS
3461#endif
3462
cb68f92d
GS
3463}
3464
76e3520e 3465STATIC void
cea2e8a9 3466S_init_main_stash(pTHX)
79072805 3467{
97aff369 3468 dVAR;
463ee0b2 3469 GV *gv;
6e72f9df 3470
3280af22 3471 PL_curstash = PL_defstash = newHV();
23579a14
NC
3472 /* We know that the string "main" will be in the global shared string
3473 table, so it's a small saving to use it rather than allocate another
3474 8 bytes. */
18916d0d 3475 PL_curstname = newSVpvs_share("main");
fafc274c 3476 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3477 /* If we hadn't caused another reference to "main" to be in the shared
3478 string table above, then it would be worth reordering these two,
3479 because otherwise all we do is delete "main" from it as a consequence
3480 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3481 SvREFCNT_dec(GvHV(gv));
23579a14 3482 hv_name_set(PL_defstash, "main", 4, 0);
b37c2d43 3483 GvHV(gv) = (HV*)SvREFCNT_inc_simple(PL_defstash);
463ee0b2 3484 SvREADONLY_on(gv);
fafc274c
NC
3485 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3486 SVt_PVAV)));
b37c2d43 3487 SvREFCNT_inc_simple(PL_incgv); /* Don't allow it to be freed */
3280af22 3488 GvMULTI_on(PL_incgv);
fafc274c 3489 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3490 GvMULTI_on(PL_hintgv);