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Enhance PERL_TRACK_MEMPOOL so that it also emulates the PerlHost
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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
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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
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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
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174 Zero(my_perl, 1, PerlInterpreter);
175 PL_Mem = ipM;
7766f137
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176 PL_MemShared = ipMS;
177 PL_MemParse = ipMP;
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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
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GS
186 return my_perl;
187}
188#else
954c1994
GS
189
190/*
ccfc67b7
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191=head1 Embedding Functions
192
954c1994
GS
193=for apidoc perl_alloc
194
195Allocates a new Perl interpreter. See L<perlembed>.
196
197=cut
198*/
199
93a17b20 200PerlInterpreter *
cea2e8a9 201perl_alloc(void)
79072805 202{
cea2e8a9 203 PerlInterpreter *my_perl;
79072805 204
9f653bb5 205 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 206 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 207
e6827a76 208 S_init_tls_and_interp(my_perl);
7cb608b5 209#ifndef PERL_TRACK_MEMPOOL
07409e01 210 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
211#else
212 Zero(my_perl, 1, PerlInterpreter);
213 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
214 return my_perl;
215#endif
79072805 216}
32e30700 217#endif /* PERL_IMPLICIT_SYS */
79072805 218
954c1994
GS
219/*
220=for apidoc perl_construct
221
222Initializes a new Perl interpreter. See L<perlembed>.
223
224=cut
225*/
226
79072805 227void
0cb96387 228perl_construct(pTHXx)
79072805 229{
27da23d5 230 dVAR;
9d4ba2ae 231 PERL_UNUSED_ARG(my_perl);
8990e307 232#ifdef MULTIPLICITY
54aff467 233 init_interp();
ac27b0f5 234 PL_perl_destruct_level = 1;
54aff467
GS
235#else
236 if (PL_perl_destruct_level > 0)
237 init_interp();
238#endif
33f46ff6 239 /* Init the real globals (and main thread)? */
3280af22 240 if (!PL_linestr) {
2aea9f8a
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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
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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
NIS
406{
407 return 0;
408}
409
41e4abd8
NC
410#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
411void
412Perl_dump_sv_child(pTHX_ SV *sv)
413{
414 ssize_t got;
bf357333
NC
415 const int sock = PL_dumper_fd;
416 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
417 union control_un control;
418 struct msghdr msg;
808ad2d0 419 struct iovec vec[2];
bf357333 420 struct cmsghdr *cmptr;
808ad2d0
NC
421 int returned_errno;
422 unsigned char buffer[256];
41e4abd8 423
bf357333 424 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
425 return;
426
427 PerlIO_flush(Perl_debug_log);
428
bf357333
NC
429 /* All these shenanigans are to pass a file descriptor over to our child for
430 it to dump out to. We can't let it hold open the file descriptor when it
431 forks, as the file descriptor it will dump to can turn out to be one end
432 of pipe that some other process will wait on for EOF. (So as it would
433 be open, the wait would be forever. */
434
435 msg.msg_control = control.control;
436 msg.msg_controllen = sizeof(control.control);
437 /* We're a connected socket so we don't need a destination */
438 msg.msg_name = NULL;
439 msg.msg_namelen = 0;
440 msg.msg_iov = vec;
808ad2d0 441 msg.msg_iovlen = 1;
bf357333
NC
442
443 cmptr = CMSG_FIRSTHDR(&msg);
444 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
445 cmptr->cmsg_level = SOL_SOCKET;
446 cmptr->cmsg_type = SCM_RIGHTS;
447 *((int *)CMSG_DATA(cmptr)) = 1;
448
449 vec[0].iov_base = (void*)&sv;
450 vec[0].iov_len = sizeof(sv);
451 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
452
453 if(got < 0) {
bf357333 454 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
455 abort();
456 }
bf357333
NC
457 if(got < sizeof(sv)) {
458 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
459 abort();
460 }
461
808ad2d0
NC
462 /* Return protocol is
463 int: errno value
464 unsigned char: length of location string (0 for empty)
465 unsigned char*: string (not terminated)
466 */
467 vec[0].iov_base = (void*)&returned_errno;
468 vec[0].iov_len = sizeof(returned_errno);
469 vec[1].iov_base = buffer;
470 vec[1].iov_len = 1;
471
472 got = readv(sock, vec, 2);
41e4abd8
NC
473
474 if(got < 0) {
475 perror("Debug leaking scalars parent read failed");
808ad2d0 476 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
477 abort();
478 }
808ad2d0 479 if(got < sizeof(returned_errno) + 1) {
41e4abd8 480 perror("Debug leaking scalars parent short read");
808ad2d0 481 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
482 abort();
483 }
484
808ad2d0
NC
485 if (*buffer) {
486 got = read(sock, buffer + 1, *buffer);
487 if(got < 0) {
488 perror("Debug leaking scalars parent read 2 failed");
489 PerlIO_flush(PerlIO_stderr());
490 abort();
491 }
492
493 if(got < *buffer) {
494 perror("Debug leaking scalars parent short read 2");
495 PerlIO_flush(PerlIO_stderr());
496 abort();
497 }
498 }
499
500 if (returned_errno || *buffer) {
501 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
502 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
503 returned_errno, strerror(returned_errno));
41e4abd8
NC
504 }
505}
506#endif
507
62375a60 508/*
954c1994
GS
509=for apidoc perl_destruct
510
511Shuts down a Perl interpreter. See L<perlembed>.
512
513=cut
514*/
515
31d77e54 516int
0cb96387 517perl_destruct(pTHXx)
79072805 518{
27da23d5 519 dVAR;
7c474504 520 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 521 HV *hv;
2aa47728 522#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
523 pid_t child;
524#endif
8990e307 525
9d4ba2ae
AL
526 PERL_UNUSED_ARG(my_perl);
527
7766f137
GS
528 /* wait for all pseudo-forked children to finish */
529 PERL_WAIT_FOR_CHILDREN;
530
3280af22 531 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
532#ifdef DEBUGGING
533 {
9d4ba2ae
AL
534 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
535 if (s) {
e1ec3a88 536 const int i = atoi(s);
5f05dabc
PP
537 if (destruct_level < i)
538 destruct_level = i;
539 }
4633a7c4
LW
540 }
541#endif
542
27da23d5 543 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
544 dJMPENV;
545 int x = 0;
546
547 JMPENV_PUSH(x);
1b6737cc 548 PERL_UNUSED_VAR(x);
f3faeb53
AB
549 if (PL_endav && !PL_minus_c)
550 call_list(PL_scopestack_ix, PL_endav);
551 JMPENV_POP;
26f423df 552 }
f3faeb53 553 LEAVE;
a0d0e21e
LW
554 FREETMPS;
555
e00b64d4 556 /* Need to flush since END blocks can produce output */
f13a2bc0 557 my_fflush_all();
e00b64d4 558
62375a60
NIS
559 if (CALL_FPTR(PL_threadhook)(aTHX)) {
560 /* Threads hook has vetoed further cleanup */
37038d91 561 return STATUS_EXIT;
62375a60
NIS
562 }
563
2aa47728
NC
564#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
565 if (destruct_level != 0) {
566 /* Fork here to create a child. Our child's job is to preserve the
567 state of scalars prior to destruction, so that we can instruct it
568 to dump any scalars that we later find have leaked.
569 There's no subtlety in this code - it assumes POSIX, and it doesn't
570 fail gracefully */
571 int fd[2];
572
573 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
574 perror("Debug leaking scalars socketpair failed");
575 abort();
576 }
577
578 child = fork();
579 if(child == -1) {
580 perror("Debug leaking scalars fork failed");
581 abort();
582 }
583 if (!child) {
584 /* We are the child */
3125a5a4
NC
585 const int sock = fd[1];
586 const int debug_fd = PerlIO_fileno(Perl_debug_log);
587 int f;
808ad2d0
NC
588 const char *where;
589 /* Our success message is an integer 0, and a char 0 */
590 static const char success[sizeof(int) + 1];
3125a5a4 591
2aa47728 592 close(fd[0]);
2aa47728 593
3125a5a4
NC
594 /* We need to close all other file descriptors otherwise we end up
595 with interesting hangs, where the parent closes its end of a
596 pipe, and sits waiting for (another) child to terminate. Only
597 that child never terminates, because it never gets EOF, because
bf357333
NC
598 we also have the far end of the pipe open. We even need to
599 close the debugging fd, because sometimes it happens to be one
600 end of a pipe, and a process is waiting on the other end for
601 EOF. Normally it would be closed at some point earlier in
602 destruction, but if we happen to cause the pipe to remain open,
603 EOF never occurs, and we get an infinite hang. Hence all the
604 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
605
606 f = sysconf(_SC_OPEN_MAX);
607 if(f < 0) {
808ad2d0
NC
608 where = "sysconf failed";
609 goto abort;
3125a5a4
NC
610 }
611 while (f--) {
612 if (f == sock)
613 continue;
3125a5a4
NC
614 close(f);
615 }
616
2aa47728
NC
617 while (1) {
618 SV *target;
bf357333
NC
619 union control_un control;
620 struct msghdr msg;
621 struct iovec vec[1];
622 struct cmsghdr *cmptr;
623 ssize_t got;
624 int got_fd;
625
626 msg.msg_control = control.control;
627 msg.msg_controllen = sizeof(control.control);
628 /* We're a connected socket so we don't need a source */
629 msg.msg_name = NULL;
630 msg.msg_namelen = 0;
631 msg.msg_iov = vec;
632 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
633
634 vec[0].iov_base = (void*)&target;
635 vec[0].iov_len = sizeof(target);
636
637 got = recvmsg(sock, &msg, 0);
2aa47728
NC
638
639 if(got == 0)
640 break;
641 if(got < 0) {
808ad2d0
NC
642 where = "recv failed";
643 goto abort;
2aa47728
NC
644 }
645 if(got < sizeof(target)) {
808ad2d0
NC
646 where = "short recv";
647 goto abort;
2aa47728 648 }
bf357333 649
808ad2d0
NC
650 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
651 where = "no cmsg";
652 goto abort;
653 }
654 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
655 where = "wrong cmsg_len";
656 goto abort;
657 }
658 if(cmptr->cmsg_level != SOL_SOCKET) {
659 where = "wrong cmsg_level";
660 goto abort;
661 }
662 if(cmptr->cmsg_type != SCM_RIGHTS) {
663 where = "wrong cmsg_type";
664 goto abort;
665 }
bf357333
NC
666
667 got_fd = *(int*)CMSG_DATA(cmptr);
668 /* For our last little bit of trickery, put the file descriptor
669 back into Perl_debug_log, as if we never actually closed it
670 */
808ad2d0
NC
671 if(got_fd != debug_fd) {
672 if (dup2(got_fd, debug_fd) == -1) {
673 where = "dup2";
674 goto abort;
675 }
676 }
2aa47728 677 sv_dump(target);
bf357333 678
2aa47728
NC
679 PerlIO_flush(Perl_debug_log);
680
808ad2d0 681 got = write(sock, &success, sizeof(success));
2aa47728
NC
682
683 if(got < 0) {
808ad2d0
NC
684 where = "write failed";
685 goto abort;
2aa47728 686 }
808ad2d0
NC
687 if(got < sizeof(success)) {
688 where = "short write";
689 goto abort;
2aa47728
NC
690 }
691 }
692 _exit(0);
808ad2d0
NC
693 abort:
694 {
695 int send_errno = errno;
696 unsigned char length = (unsigned char) strlen(where);
697 struct iovec failure[3] = {
698 {(void*)&send_errno, sizeof(send_errno)},
699 {&length, 1},
700 {(void*)where, length}
701 };
702 int got = writev(sock, failure, 3);
703 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
704 in the parent if we try to read from the socketpair after the
705 child has exited, even if there was data to read.
706 So sleep a bit to give the parent a fighting chance of
707 reading the data. */
708 sleep(2);
709 _exit((got == -1) ? errno : 0);
710 }
bf357333 711 /* End of child. */
2aa47728 712 }
41e4abd8 713 PL_dumper_fd = fd[0];
2aa47728
NC
714 close(fd[1]);
715 }
716#endif
717
ff0cee69
PP
718 /* We must account for everything. */
719
720 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
721 /* Do this now, because destroying ops can cause new SVs to be generated
722 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
723 PL_curcop to point to a valid op from which the filename structure
724 member is copied. */
725 PL_curcop = &PL_compiling;
3280af22 726 if (PL_main_root) {
4e380990
DM
727 /* ensure comppad/curpad to refer to main's pad */
728 if (CvPADLIST(PL_main_cv)) {
729 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
730 }
3280af22
NIS
731 op_free(PL_main_root);
732 PL_main_root = Nullop;
a0d0e21e 733 }
3280af22
NIS
734 PL_main_start = Nullop;
735 SvREFCNT_dec(PL_main_cv);
601f1833 736 PL_main_cv = NULL;
24d3c518 737 PL_dirty = TRUE;
ff0cee69 738
13621cfb
NIS
739 /* Tell PerlIO we are about to tear things apart in case
740 we have layers which are using resources that should
741 be cleaned up now.
742 */
743
744 PerlIO_destruct(aTHX);
745
3280af22 746 if (PL_sv_objcount) {
a0d0e21e
LW
747 /*
748 * Try to destruct global references. We do this first so that the
749 * destructors and destructees still exist. Some sv's might remain.
750 * Non-referenced objects are on their own.
751 */
a0d0e21e 752 sv_clean_objs();
bf9cdc68 753 PL_sv_objcount = 0;
a0de6cf5 754 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 755 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
756 }
757
5cd24f17 758 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 759 SvREFCNT_dec(PL_warnhook);
a0714e2c 760 PL_warnhook = NULL;
3280af22 761 SvREFCNT_dec(PL_diehook);
a0714e2c 762 PL_diehook = NULL;
5cd24f17 763
4b556e6c 764 /* call exit list functions */
3280af22 765 while (PL_exitlistlen-- > 0)
acfe0abc 766 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 767
3280af22 768 Safefree(PL_exitlist);
4b556e6c 769
1c4916e5
CB
770 PL_exitlist = NULL;
771 PL_exitlistlen = 0;
772
a0d0e21e 773 if (destruct_level == 0){
8990e307 774
a0d0e21e 775 DEBUG_P(debprofdump());
ac27b0f5 776
56a2bab7
NIS
777#if defined(PERLIO_LAYERS)
778 /* No more IO - including error messages ! */
779 PerlIO_cleanup(aTHX);
780#endif
781
a0d0e21e 782 /* The exit() function will do everything that needs doing. */
37038d91 783 return STATUS_EXIT;
a0d0e21e 784 }
5dd60ef7 785
551a8b83 786 /* jettison our possibly duplicated environment */
4b647fb0
DM
787 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
788 * so we certainly shouldn't free it here
789 */
2f42fcb0 790#ifndef PERL_MICRO
4b647fb0 791#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 792 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
793#ifdef USE_ITHREADS
794 /* only main thread can free environ[0] contents */
795 && PL_curinterp == aTHX
796#endif
797 )
798 {
551a8b83
JH
799 I32 i;
800
801 for (i = 0; environ[i]; i++)
4b420006 802 safesysfree(environ[i]);
0631ea03 803
4b420006
JH
804 /* Must use safesysfree() when working with environ. */
805 safesysfree(environ);
551a8b83
JH
806
807 environ = PL_origenviron;
808 }
809#endif
2f42fcb0 810#endif /* !PERL_MICRO */
551a8b83 811
804ffa60 812 /* reset so print() ends up where we expect */
a0714e2c 813 setdefout(NULL);
804ffa60 814
5f8cb046
DM
815#ifdef USE_ITHREADS
816 /* the syntax tree is shared between clones
817 * so op_free(PL_main_root) only ReREFCNT_dec's
818 * REGEXPs in the parent interpreter
819 * we need to manually ReREFCNT_dec for the clones
820 */
821 {
822 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 823 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
824
825 while (i) {
c4420975 826 SV * const resv = ary[--i];
35061a7e
DM
827
828 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 829 /* this is PL_reg_curpm, already freed
35061a7e
DM
830 * flag is set in regexec.c:S_regtry
831 */
832 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 833 }
1cc8b4c5
AB
834 else if(SvREPADTMP(resv)) {
835 SvREPADTMP_off(resv);
836 }
a560f29b
NC
837 else if(SvIOKp(resv)) {
838 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
839 ReREFCNT_dec(re);
840 }
841 }
842 }
843 SvREFCNT_dec(PL_regex_padav);
7d49f689 844 PL_regex_padav = NULL;
5f8cb046
DM
845 PL_regex_pad = NULL;
846#endif
847
081fc587
AB
848 SvREFCNT_dec((SV*) PL_stashcache);
849 PL_stashcache = NULL;
850
5f05dabc
PP
851 /* loosen bonds of global variables */
852
3280af22
NIS
853 if(PL_rsfp) {
854 (void)PerlIO_close(PL_rsfp);
855 PL_rsfp = Nullfp;
8ebc5c01
PP
856 }
857
858 /* Filters for program text */
3280af22 859 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 860 PL_rsfp_filters = NULL;
8ebc5c01
PP
861
862 /* switches */
3280af22
NIS
863 PL_preprocess = FALSE;
864 PL_minus_n = FALSE;
865 PL_minus_p = FALSE;
866 PL_minus_l = FALSE;
867 PL_minus_a = FALSE;
868 PL_minus_F = FALSE;
869 PL_doswitches = FALSE;
599cee73 870 PL_dowarn = G_WARN_OFF;
3280af22
NIS
871 PL_doextract = FALSE;
872 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
873 PL_unsafe = FALSE;
874
875 Safefree(PL_inplace);
bd61b366 876 PL_inplace = NULL;
a7cb1f99 877 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
878
879 if (PL_e_script) {
880 SvREFCNT_dec(PL_e_script);
a0714e2c 881 PL_e_script = NULL;
8ebc5c01
PP
882 }
883
bf9cdc68
RG
884 PL_perldb = 0;
885
8ebc5c01
PP
886 /* magical thingies */
887
7889fe52 888 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 889 PL_ofs_sv = NULL;
5f05dabc 890
7889fe52 891 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 892 PL_ors_sv = NULL;
8ebc5c01 893
3280af22 894 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 895 PL_rs = NULL;
dc92893f 896
d33b2eba
GS
897 PL_multiline = 0; /* $* */
898 Safefree(PL_osname); /* $^O */
bd61b366 899 PL_osname = NULL;
5f05dabc 900
3280af22 901 SvREFCNT_dec(PL_statname);
a0714e2c
SS
902 PL_statname = NULL;
903 PL_statgv = NULL;
5f05dabc 904
8ebc5c01
PP
905 /* defgv, aka *_ should be taken care of elsewhere */
906
8ebc5c01 907 /* clean up after study() */
3280af22 908 SvREFCNT_dec(PL_lastscream);
a0714e2c 909 PL_lastscream = NULL;
3280af22
NIS
910 Safefree(PL_screamfirst);
911 PL_screamfirst = 0;
912 Safefree(PL_screamnext);
913 PL_screamnext = 0;
8ebc5c01 914
7d5ea4e7
GS
915 /* float buffer */
916 Safefree(PL_efloatbuf);
bd61b366 917 PL_efloatbuf = NULL;
7d5ea4e7
GS
918 PL_efloatsize = 0;
919
8ebc5c01 920 /* startup and shutdown function lists */
3280af22 921 SvREFCNT_dec(PL_beginav);
5a837c8f 922 SvREFCNT_dec(PL_beginav_save);
3280af22 923 SvREFCNT_dec(PL_endav);
7d30b5c4 924 SvREFCNT_dec(PL_checkav);
ece599bd 925 SvREFCNT_dec(PL_checkav_save);
3280af22 926 SvREFCNT_dec(PL_initav);
7d49f689
NC
927 PL_beginav = NULL;
928 PL_beginav_save = NULL;
929 PL_endav = NULL;
930 PL_checkav = NULL;
931 PL_checkav_save = NULL;
932 PL_initav = NULL;
5618dfe8 933
8ebc5c01 934 /* shortcuts just get cleared */
a0714e2c
SS
935 PL_envgv = NULL;
936 PL_incgv = NULL;
937 PL_hintgv = NULL;
938 PL_errgv = NULL;
939 PL_argvgv = NULL;
940 PL_argvoutgv = NULL;
941 PL_stdingv = NULL;
942 PL_stderrgv = NULL;
943 PL_last_in_gv = NULL;
944 PL_replgv = NULL;
945 PL_DBgv = NULL;
946 PL_DBline = NULL;
947 PL_DBsub = NULL;
948 PL_DBsingle = NULL;
949 PL_DBtrace = NULL;
950 PL_DBsignal = NULL;
951 PL_DBassertion = NULL;
601f1833 952 PL_DBcv = NULL;
7d49f689 953 PL_dbargs = NULL;
5c284bb0 954 PL_debstash = NULL;
8ebc5c01 955
7a1c5554 956 SvREFCNT_dec(PL_argvout_stack);
7d49f689 957 PL_argvout_stack = NULL;
8ebc5c01 958
5c831c24 959 SvREFCNT_dec(PL_modglobal);
5c284bb0 960 PL_modglobal = NULL;
5c831c24 961 SvREFCNT_dec(PL_preambleav);
7d49f689 962 PL_preambleav = NULL;
5c831c24 963 SvREFCNT_dec(PL_subname);
a0714e2c 964 PL_subname = NULL;
5c831c24 965 SvREFCNT_dec(PL_linestr);
a0714e2c 966 PL_linestr = NULL;
ca0c25f6 967#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 968 SvREFCNT_dec(PL_pidstatus);
5c284bb0 969 PL_pidstatus = NULL;
ca0c25f6 970#endif
5c831c24 971 SvREFCNT_dec(PL_toptarget);
a0714e2c 972 PL_toptarget = NULL;
5c831c24 973 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
974 PL_bodytarget = NULL;
975 PL_formtarget = NULL;
5c831c24 976
d33b2eba 977 /* free locale stuff */
b9582b6a 978#ifdef USE_LOCALE_COLLATE
d33b2eba 979 Safefree(PL_collation_name);
bd61b366 980 PL_collation_name = NULL;
b9582b6a 981#endif
d33b2eba 982
b9582b6a 983#ifdef USE_LOCALE_NUMERIC
d33b2eba 984 Safefree(PL_numeric_name);
bd61b366 985 PL_numeric_name = NULL;
a453c169 986 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 987 PL_numeric_radix_sv = NULL;
b9582b6a 988#endif
d33b2eba 989
5c831c24
GS
990 /* clear utf8 character classes */
991 SvREFCNT_dec(PL_utf8_alnum);
992 SvREFCNT_dec(PL_utf8_alnumc);
993 SvREFCNT_dec(PL_utf8_ascii);
994 SvREFCNT_dec(PL_utf8_alpha);
995 SvREFCNT_dec(PL_utf8_space);
996 SvREFCNT_dec(PL_utf8_cntrl);
997 SvREFCNT_dec(PL_utf8_graph);
998 SvREFCNT_dec(PL_utf8_digit);
999 SvREFCNT_dec(PL_utf8_upper);
1000 SvREFCNT_dec(PL_utf8_lower);
1001 SvREFCNT_dec(PL_utf8_print);
1002 SvREFCNT_dec(PL_utf8_punct);
1003 SvREFCNT_dec(PL_utf8_xdigit);
1004 SvREFCNT_dec(PL_utf8_mark);
1005 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1006 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1007 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1008 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1009 SvREFCNT_dec(PL_utf8_idstart);
1010 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1011 PL_utf8_alnum = NULL;
1012 PL_utf8_alnumc = NULL;
1013 PL_utf8_ascii = NULL;
1014 PL_utf8_alpha = NULL;
1015 PL_utf8_space = NULL;
1016 PL_utf8_cntrl = NULL;
1017 PL_utf8_graph = NULL;
1018 PL_utf8_digit = NULL;
1019 PL_utf8_upper = NULL;
1020 PL_utf8_lower = NULL;
1021 PL_utf8_print = NULL;
1022 PL_utf8_punct = NULL;
1023 PL_utf8_xdigit = NULL;
1024 PL_utf8_mark = NULL;
1025 PL_utf8_toupper = NULL;
1026 PL_utf8_totitle = NULL;
1027 PL_utf8_tolower = NULL;
1028 PL_utf8_tofold = NULL;
1029 PL_utf8_idstart = NULL;
1030 PL_utf8_idcont = NULL;
5c831c24 1031
971a9dd3
GS
1032 if (!specialWARN(PL_compiling.cop_warnings))
1033 SvREFCNT_dec(PL_compiling.cop_warnings);
a0714e2c 1034 PL_compiling.cop_warnings = NULL;
ac27b0f5
NIS
1035 if (!specialCopIO(PL_compiling.cop_io))
1036 SvREFCNT_dec(PL_compiling.cop_io);
a0714e2c 1037 PL_compiling.cop_io = NULL;
05ec9bb3
NIS
1038 CopFILE_free(&PL_compiling);
1039 CopSTASH_free(&PL_compiling);
5c831c24 1040
a0d0e21e 1041 /* Prepare to destruct main symbol table. */
5f05dabc 1042
3280af22
NIS
1043 hv = PL_defstash;
1044 PL_defstash = 0;
a0d0e21e 1045 SvREFCNT_dec(hv);
5c831c24 1046 SvREFCNT_dec(PL_curstname);
a0714e2c 1047 PL_curstname = NULL;
a0d0e21e 1048
5a844595
GS
1049 /* clear queued errors */
1050 SvREFCNT_dec(PL_errors);
a0714e2c 1051 PL_errors = NULL;
5a844595 1052
a0d0e21e 1053 FREETMPS;
0453d815 1054 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1055 if (PL_scopestack_ix != 0)
9014280d 1056 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1057 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1058 (long)PL_scopestack_ix);
1059 if (PL_savestack_ix != 0)
9014280d 1060 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1061 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1062 (long)PL_savestack_ix);
1063 if (PL_tmps_floor != -1)
9014280d 1064 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1065 (long)PL_tmps_floor + 1);
a0d0e21e 1066 if (cxstack_ix != -1)
9014280d 1067 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1068 (long)cxstack_ix + 1);
a0d0e21e 1069 }
8990e307
LW
1070
1071 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1072 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1073 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1074
1075 /* the 2 is for PL_fdpid and PL_strtab */
1076 while (PL_sv_count > 2 && sv_clean_all())
1077 ;
1078
d33b2eba
GS
1079 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1080 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1081 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1082 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1083
d4777f27
GS
1084 AvREAL_off(PL_fdpid); /* no surviving entries */
1085 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1086 PL_fdpid = NULL;
d33b2eba 1087
6c644e78
GS
1088#ifdef HAVE_INTERP_INTERN
1089 sys_intern_clear();
1090#endif
1091
6e72f9df
PP
1092 /* Destruct the global string table. */
1093 {
1094 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1095 * so that sv_free() won't fail on them.
80459961
NC
1096 * Now that the global string table is using a single hunk of memory
1097 * for both HE and HEK, we either need to explicitly unshare it the
1098 * correct way, or actually free things here.
6e72f9df 1099 */
80459961
NC
1100 I32 riter = 0;
1101 const I32 max = HvMAX(PL_strtab);
c4420975 1102 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1103 HE *hent = array[0];
1104
6e72f9df 1105 for (;;) {
0453d815 1106 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1107 HE * const next = HeNEXT(hent);
9014280d 1108 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1109 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1110 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1111 Safefree(hent);
1112 hent = next;
6e72f9df
PP
1113 }
1114 if (!hent) {
1115 if (++riter > max)
1116 break;
1117 hent = array[riter];
1118 }
1119 }
80459961
NC
1120
1121 Safefree(array);
1122 HvARRAY(PL_strtab) = 0;
1123 HvTOTALKEYS(PL_strtab) = 0;
1124 HvFILL(PL_strtab) = 0;
6e72f9df 1125 }
3280af22 1126 SvREFCNT_dec(PL_strtab);
6e72f9df 1127
e652bb2f 1128#ifdef USE_ITHREADS
c21d1a0f 1129 /* free the pointer tables used for cloning */
a0739874 1130 ptr_table_free(PL_ptr_table);
bf9cdc68 1131 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1132#endif
a0739874 1133
d33b2eba
GS
1134 /* free special SVs */
1135
1136 SvREFCNT(&PL_sv_yes) = 0;
1137 sv_clear(&PL_sv_yes);
1138 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1139 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1140
1141 SvREFCNT(&PL_sv_no) = 0;
1142 sv_clear(&PL_sv_no);
1143 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1144 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1145
9f375a43
DM
1146 {
1147 int i;
1148 for (i=0; i<=2; i++) {
1149 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1150 sv_clear(PERL_DEBUG_PAD(i));
1151 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1152 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1153 }
1154 }
1155
0453d815 1156 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1157 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1158
eba0f806
DM
1159#ifdef DEBUG_LEAKING_SCALARS
1160 if (PL_sv_count != 0) {
1161 SV* sva;
1162 SV* sv;
1163 register SV* svend;
1164
1165 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1166 svend = &sva[SvREFCNT(sva)];
1167 for (sv = sva + 1; sv < svend; ++sv) {
1168 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1169 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1170 " flags=0x%"UVxf
fd0854ff
DM
1171 " refcnt=%"UVuf pTHX__FORMAT "\n"
1172 "\tallocated at %s:%d %s %s%s\n",
1173 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1174 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1175 sv->sv_debug_line,
1176 sv->sv_debug_inpad ? "for" : "by",
1177 sv->sv_debug_optype ?
1178 PL_op_name[sv->sv_debug_optype]: "(none)",
1179 sv->sv_debug_cloned ? " (cloned)" : ""
1180 );
2aa47728 1181#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1182 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1183#endif
eba0f806
DM
1184 }
1185 }
1186 }
1187 }
2aa47728
NC
1188#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1189 {
1190 int status;
1191 fd_set rset;
1192 /* Wait for up to 4 seconds for child to terminate.
1193 This seems to be the least effort way of timing out on reaping
1194 its exit status. */
1195 struct timeval waitfor = {4, 0};
41e4abd8 1196 int sock = PL_dumper_fd;
2aa47728
NC
1197
1198 shutdown(sock, 1);
1199 FD_ZERO(&rset);
1200 FD_SET(sock, &rset);
1201 select(sock + 1, &rset, NULL, NULL, &waitfor);
1202 waitpid(child, &status, WNOHANG);
1203 close(sock);
1204 }
1205#endif
eba0f806 1206#endif
bf9cdc68 1207 PL_sv_count = 0;
eba0f806
DM
1208
1209
56a2bab7 1210#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1211 /* No more IO - including error messages ! */
1212 PerlIO_cleanup(aTHX);
1213#endif
1214
9f4bd222 1215 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1216 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1217 for no arg - and will try and SvREFCNT_dec it.
1218 */
1219 SvREFCNT(&PL_sv_undef) = 0;
1220 SvREADONLY_off(&PL_sv_undef);
1221
3280af22 1222 Safefree(PL_origfilename);
bd61b366 1223 PL_origfilename = NULL;
3280af22 1224 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1225 PL_reg_start_tmp = (char**)NULL;
1226 PL_reg_start_tmpl = 0;
43c5f42d 1227 Safefree(PL_reg_curpm);
82ba1be6 1228 Safefree(PL_reg_poscache);
dd28f7bb 1229 free_tied_hv_pool();
3280af22 1230 Safefree(PL_op_mask);
cf36064f 1231 Safefree(PL_psig_ptr);
bf9cdc68 1232 PL_psig_ptr = (SV**)NULL;
cf36064f 1233 Safefree(PL_psig_name);
bf9cdc68 1234 PL_psig_name = (SV**)NULL;
2c2666fc 1235 Safefree(PL_bitcount);
bd61b366 1236 PL_bitcount = NULL;
ce08f86c 1237 Safefree(PL_psig_pend);
bf9cdc68 1238 PL_psig_pend = (int*)NULL;
a0714e2c 1239 PL_formfeed = NULL;
6e72f9df 1240 nuke_stacks();
bf9cdc68
RG
1241 PL_tainting = FALSE;
1242 PL_taint_warn = FALSE;
3280af22 1243 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1244 PL_debug = 0;
ac27b0f5 1245
a0d0e21e 1246 DEBUG_P(debprofdump());
d33b2eba 1247
e5dd39fc 1248#ifdef USE_REENTRANT_API
10bc17b6 1249 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1250#endif
1251
612f20c3
GS
1252 sv_free_arenas();
1253
fc36a67e
PP
1254 /* As the absolutely last thing, free the non-arena SV for mess() */
1255
3280af22 1256 if (PL_mess_sv) {
f350b448
NC
1257 /* we know that type == SVt_PVMG */
1258
9c63abab 1259 /* it could have accumulated taint magic */
f350b448
NC
1260 MAGIC* mg;
1261 MAGIC* moremagic;
1262 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1263 moremagic = mg->mg_moremagic;
1264 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1265 && mg->mg_len >= 0)
1266 Safefree(mg->mg_ptr);
1267 Safefree(mg);
9c63abab 1268 }
f350b448 1269
fc36a67e 1270 /* we know that type >= SVt_PV */
8bd4d4c5 1271 SvPV_free(PL_mess_sv);
3280af22
NIS
1272 Safefree(SvANY(PL_mess_sv));
1273 Safefree(PL_mess_sv);
a0714e2c 1274 PL_mess_sv = NULL;
fc36a67e 1275 }
37038d91 1276 return STATUS_EXIT;
79072805
LW
1277}
1278
954c1994
GS
1279/*
1280=for apidoc perl_free
1281
1282Releases a Perl interpreter. See L<perlembed>.
1283
1284=cut
1285*/
1286
79072805 1287void
0cb96387 1288perl_free(pTHXx)
79072805 1289{
7cb608b5
NC
1290#ifdef PERL_TRACK_MEMPOOL
1291 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1292 thread at thread exit. */
1293 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1294 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1295#endif
1296
acfe0abc 1297#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1298# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS
1299# ifdef NETWARE
1300 void *host = nw_internal_host;
1301# else
1302 void *host = w32_internal_host;
1303# endif
ce3e5b80 1304 PerlMem_free(aTHXx);
acfe0abc 1305# ifdef NETWARE
011f1a1a 1306 nw_delete_internal_host(host);
acfe0abc
GS
1307# else
1308 win32_delete_internal_host(host);
1309# endif
1c0ca838
GS
1310# else
1311 PerlMem_free(aTHXx);
1312# endif
acfe0abc
GS
1313#else
1314 PerlMem_free(aTHXx);
76e3520e 1315#endif
79072805
LW
1316}
1317
aebd1ac7
GA
1318#if defined(USE_5005THREADS) || defined(USE_ITHREADS)
1319/* provide destructors to clean up the thread key when libperl is unloaded */
1320#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1321
110d3f98 1322#if defined(__hpux) && __ux_version > 1020 && !defined(__GNUC__)
aebd1ac7
GA
1323#pragma fini "perl_fini"
1324#endif
1325
0dbb1585
AL
1326static void
1327#if defined(__GNUC__)
1328__attribute__((destructor))
aebd1ac7 1329#endif
de009b76 1330perl_fini(void)
aebd1ac7 1331{
27da23d5 1332 dVAR;
aebd1ac7
GA
1333 if (PL_curinterp)
1334 FREE_THREAD_KEY;
1335}
1336
1337#endif /* WIN32 */
1338#endif /* THREADS */
1339
4b556e6c 1340void
864dbfa3 1341Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1342{
97aff369 1343 dVAR;
3280af22
NIS
1344 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1345 PL_exitlist[PL_exitlistlen].fn = fn;
1346 PL_exitlist[PL_exitlistlen].ptr = ptr;
1347 ++PL_exitlistlen;
4b556e6c
JD
1348}
1349
56cf6df8
RGS
1350#ifdef HAS_PROCSELFEXE
1351/* This is a function so that we don't hold on to MAXPATHLEN
1352 bytes of stack longer than necessary
1353 */
1354STATIC void
e1ec3a88 1355S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1356{
1357 char buf[MAXPATHLEN];
1358 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1359
1360 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1361 includes a spurious NUL which will cause $^X to fail in system
1362 or backticks (this will prevent extensions from being built and
1363 many tests from working). readlink is not meant to add a NUL.
1364 Normal readlink works fine.
1365 */
1366 if (len > 0 && buf[len-1] == '\0') {
1367 len--;
1368 }
1369
1370 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1371 returning the text "unknown" from the readlink rather than the path
1372 to the executable (or returning an error from the readlink). Any valid
1373 path has a '/' in it somewhere, so use that to validate the result.
1374 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1375 */
1376 if (len > 0 && memchr(buf, '/', len)) {
1377 sv_setpvn(sv,buf,len);
1378 }
1379 else {
1380 sv_setpv(sv,arg0);
1381 }
1382}
1383#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1384
1385STATIC void
1386S_set_caret_X(pTHX) {
97aff369 1387 dVAR;
fafc274c 1388 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1389 if (tmpgv) {
1390#ifdef HAS_PROCSELFEXE
1391 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1392#else
1393#ifdef OS2
c69033f2 1394 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1395#else
c69033f2 1396 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1397#endif
1398#endif
1399 }
1400}
1401
954c1994
GS
1402/*
1403=for apidoc perl_parse
1404
1405Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1406
1407=cut
1408*/
1409
79072805 1410int
0cb96387 1411perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1412{
27da23d5 1413 dVAR;
6224f72b 1414 I32 oldscope;
6224f72b 1415 int ret;
db36c5a1 1416 dJMPENV;
8d063cd8 1417
9d4ba2ae
AL
1418 PERL_UNUSED_VAR(my_perl);
1419
a687059c
LW
1420#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1421#ifdef IAMSUID
1422#undef IAMSUID
cea2e8a9 1423 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1424setuid perl scripts securely.\n");
ae3f3efd 1425#endif /* IAMSUID */
a687059c
LW
1426#endif
1427
b0891165
JH
1428#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1429 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1430 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1431 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1432 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1433 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1434 if (!PL_rehash_seed_set)
1435 PL_rehash_seed = get_hash_seed();
b0891165 1436 {
9d4ba2ae 1437 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1438
1b6737cc
AL
1439 if (s && (atoi(s) == 1))
1440 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1441 }
1442#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1443
3280af22 1444 PL_origargc = argc;
e2975953 1445 PL_origargv = argv;
a0d0e21e 1446
a2722ac9
GA
1447 if (PL_origalen != 0) {
1448 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1449 }
1450 else {
3cb9023d
JH
1451 /* Set PL_origalen be the sum of the contiguous argv[]
1452 * elements plus the size of the env in case that it is
e9137a8e 1453 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1454 * as the maximum modifiable length of $0. In the worst case
1455 * the area we are able to modify is limited to the size of
43c32782 1456 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1457 * --jhi */
e1ec3a88 1458 const char *s = NULL;
54bfe034 1459 int i;
1b6737cc 1460 const UV mask =
7d8e7db3 1461 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1462 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1463 const UV aligned =
43c32782
JH
1464 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1465
1466 /* See if all the arguments are contiguous in memory. Note
1467 * that 'contiguous' is a loose term because some platforms
1468 * align the argv[] and the envp[]. If the arguments look
1469 * like non-aligned, assume that they are 'strictly' or
1470 * 'traditionally' contiguous. If the arguments look like
1471 * aligned, we just check that they are within aligned
1472 * PTRSIZE bytes. As long as no system has something bizarre
1473 * like the argv[] interleaved with some other data, we are
1474 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1475 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1476 while (*s) s++;
1477 for (i = 1; i < PL_origargc; i++) {
1478 if ((PL_origargv[i] == s + 1
43c32782 1479#ifdef OS2
c8941eeb 1480 || PL_origargv[i] == s + 2
43c32782 1481#endif
c8941eeb
JH
1482 )
1483 ||
1484 (aligned &&
1485 (PL_origargv[i] > s &&
1486 PL_origargv[i] <=
1487 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1488 )
1489 {
1490 s = PL_origargv[i];
1491 while (*s) s++;
1492 }
1493 else
1494 break;
54bfe034 1495 }
54bfe034 1496 }
3cb9023d 1497 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1498 if (s && PL_origenviron) {
43c32782
JH
1499 if ((PL_origenviron[0] == s + 1
1500#ifdef OS2
1501 || (PL_origenviron[0] == s + 9 && (s += 8))
1502#endif
1503 )
1504 ||
1505 (aligned &&
1506 (PL_origenviron[0] > s &&
1507 PL_origenviron[0] <=
1508 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1509 )
1510 {
1511#ifndef OS2
1512 s = PL_origenviron[0];
1513 while (*s) s++;
1514#endif
bd61b366 1515 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1516 /* Force copy of environment. */
1517 for (i = 1; PL_origenviron[i]; i++) {
1518 if (PL_origenviron[i] == s + 1
1519 ||
1520 (aligned &&
1521 (PL_origenviron[i] > s &&
1522 PL_origenviron[i] <=
1523 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1524 )
1525 {
1526 s = PL_origenviron[i];
1527 while (*s) s++;
1528 }
1529 else
1530 break;
54bfe034 1531 }
43c32782 1532 }
54bfe034 1533 }
2d2af554 1534 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1535 }
1536
3280af22 1537 if (PL_do_undump) {
a0d0e21e
LW
1538
1539 /* Come here if running an undumped a.out. */
1540
3280af22
NIS
1541 PL_origfilename = savepv(argv[0]);
1542 PL_do_undump = FALSE;
a0d0e21e 1543 cxstack_ix = -1; /* start label stack again */
748a9306 1544 init_ids();
b7975bdd
NC
1545 assert (!PL_tainted);
1546 TAINT;
1547 S_set_caret_X(aTHX);
1548 TAINT_NOT;
a0d0e21e
LW
1549 init_postdump_symbols(argc,argv,env);
1550 return 0;
1551 }
1552
3280af22 1553 if (PL_main_root) {
3280af22
NIS
1554 op_free(PL_main_root);
1555 PL_main_root = Nullop;
ff0cee69 1556 }
3280af22
NIS
1557 PL_main_start = Nullop;
1558 SvREFCNT_dec(PL_main_cv);
601f1833 1559 PL_main_cv = NULL;
79072805 1560
3280af22
NIS
1561 time(&PL_basetime);
1562 oldscope = PL_scopestack_ix;
599cee73 1563 PL_dowarn = G_WARN_OFF;
f86702cc 1564
14dd3ad8 1565 JMPENV_PUSH(ret);
6224f72b 1566 switch (ret) {
312caa8e 1567 case 0:
14dd3ad8 1568 parse_body(env,xsinit);
7d30b5c4
GS
1569 if (PL_checkav)
1570 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1571 ret = 0;
1572 break;
6224f72b
GS
1573 case 1:
1574 STATUS_ALL_FAILURE;
1575 /* FALL THROUGH */
1576 case 2:
1577 /* my_exit() was called */
3280af22 1578 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1579 LEAVE;
1580 FREETMPS;
3280af22 1581 PL_curstash = PL_defstash;
7d30b5c4
GS
1582 if (PL_checkav)
1583 call_list(oldscope, PL_checkav);
37038d91 1584 ret = STATUS_EXIT;
14dd3ad8 1585 break;
6224f72b 1586 case 3:
bf49b057 1587 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1588 ret = 1;
1589 break;
6224f72b 1590 }
14dd3ad8
GS
1591 JMPENV_POP;
1592 return ret;
1593}
1594
312caa8e 1595STATIC void *
14dd3ad8 1596S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1597{
27da23d5 1598 dVAR;
312caa8e 1599 int argc = PL_origargc;
8f42b153 1600 char **argv = PL_origargv;
e1ec3a88 1601 const char *scriptname = NULL;
312caa8e 1602 VOL bool dosearch = FALSE;
e1ec3a88 1603 const char *validarg = "";
312caa8e
CS
1604 register SV *sv;
1605 register char *s;
bd61b366 1606 const char *cddir = NULL;
ab019eaa 1607#ifdef USE_SITECUSTOMIZE
20ef40cf 1608 bool minus_f = FALSE;
ab019eaa 1609#endif
312caa8e 1610
3280af22 1611 sv_setpvn(PL_linestr,"",0);
396482e1 1612 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1613 SAVEFREESV(sv);
1614 init_main_stash();
54310121 1615
6224f72b
GS
1616 for (argc--,argv++; argc > 0; argc--,argv++) {
1617 if (argv[0][0] != '-' || !argv[0][1])
1618 break;
1619#ifdef DOSUID
1620 if (*validarg)
1621 validarg = " PHOOEY ";
1622 else
1623 validarg = argv[0];
ae3f3efd
PS
1624 /*
1625 * Can we rely on the kernel to start scripts with argv[1] set to
1626 * contain all #! line switches (the whole line)? (argv[0] is set to
1627 * the interpreter name, argv[2] to the script name; argv[3] and
1628 * above may contain other arguments.)
1629 */
13281fa4 1630#endif
6224f72b
GS
1631 s = argv[0]+1;
1632 reswitch:
1633 switch (*s) {
729a02f2 1634 case 'C':
1d5472a9
GS
1635#ifndef PERL_STRICT_CR
1636 case '\r':
1637#endif
6224f72b
GS
1638 case ' ':
1639 case '0':
1640 case 'F':
1641 case 'a':
1642 case 'c':
1643 case 'd':
1644 case 'D':
1645 case 'h':
1646 case 'i':
1647 case 'l':
1648 case 'M':
1649 case 'm':
1650 case 'n':
1651 case 'p':
1652 case 's':
1653 case 'u':
1654 case 'U':
1655 case 'v':
599cee73
PM
1656 case 'W':
1657 case 'X':
6224f72b 1658 case 'w':
06492da6 1659 case 'A':
97bd5664 1660 if ((s = moreswitches(s)))
6224f72b
GS
1661 goto reswitch;
1662 break;
33b78306 1663
1dbad523 1664 case 't':
22f7c9c9 1665 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1666 if( !PL_tainting ) {
1667 PL_taint_warn = TRUE;
1668 PL_tainting = TRUE;
1669 }
1670 s++;
1671 goto reswitch;
6224f72b 1672 case 'T':
22f7c9c9 1673 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1674 PL_tainting = TRUE;
317ea90d 1675 PL_taint_warn = FALSE;
6224f72b
GS
1676 s++;
1677 goto reswitch;
f86702cc 1678
bc9b29db
RH
1679 case 'E':
1680 PL_minus_E = TRUE;
1681 /* FALL THROUGH */
6224f72b 1682 case 'e':
bf4acbe4
GS
1683#ifdef MACOS_TRADITIONAL
1684 /* ignore -e for Dev:Pseudo argument */
1685 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1686 break;
bf4acbe4 1687#endif
a52eba0e 1688 forbid_setid('e', -1);
3280af22 1689 if (!PL_e_script) {
396482e1 1690 PL_e_script = newSVpvs("");
0cb96387 1691 filter_add(read_e_script, NULL);
6224f72b
GS
1692 }
1693 if (*++s)
3280af22 1694 sv_catpv(PL_e_script, s);
6224f72b 1695 else if (argv[1]) {
3280af22 1696 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1697 argc--,argv++;
1698 }
1699 else
bc9b29db 1700 Perl_croak(aTHX_ "No code specified for -%c", *s);
396482e1 1701 sv_catpvs(PL_e_script, "\n");
6224f72b 1702 break;
afe37c7d 1703
20ef40cf 1704 case 'f':
f5542d3a 1705#ifdef USE_SITECUSTOMIZE
20ef40cf 1706 minus_f = TRUE;
f5542d3a 1707#endif
20ef40cf
GA
1708 s++;
1709 goto reswitch;
1710
6224f72b 1711 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1712 forbid_setid('I', -1);
bd61b366 1713 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1714 argc--,argv++;
1715 }
6224f72b 1716 if (s && *s) {
0df16ed7 1717 STRLEN len = strlen(s);
aec46f14 1718 const char * const p = savepvn(s, len);
88fe16b2 1719 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1720 sv_catpvs(sv, "-I");
0df16ed7 1721 sv_catpvn(sv, p, len);
396482e1 1722 sv_catpvs(sv, " ");
6224f72b 1723 Safefree(p);
0df16ed7
GS
1724 }
1725 else
a67e862a 1726 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1727 break;
1728 case 'P':
a52eba0e 1729 forbid_setid('P', -1);
3280af22 1730 PL_preprocess = TRUE;
6224f72b
GS
1731 s++;
1732 goto reswitch;
1733 case 'S':
a52eba0e 1734 forbid_setid('S', -1);
6224f72b
GS
1735 dosearch = TRUE;
1736 s++;
1737 goto reswitch;
1738 case 'V':
7edfd0ef
NC
1739 {
1740 SV *opts_prog;
1741
1742 if (!PL_preambleav)
1743 PL_preambleav = newAV();
1744 av_push(PL_preambleav,
396482e1 1745 newSVpvs("use Config;"));
7edfd0ef
NC
1746 if (*++s != ':') {
1747 STRLEN opts;
1748
396482e1 1749 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1750#ifdef VMS
396482e1 1751 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1752#else
396482e1 1753 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1754#endif
7edfd0ef 1755 opts = SvCUR(opts_prog);
efcaa95b 1756
9cd7d3f2 1757 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1758# ifdef DEBUGGING
e2e4dbf1 1759 " DEBUGGING"
6224f72b 1760# endif
4f185743
NC
1761# ifdef DEBUG_LEAKING_SCALARS
1762 " DEBUG_LEAKING_SCALARS"
1763# endif
85e1fcb9 1764# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1765 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1766# endif
1767# ifdef FAKE_THREADS
e2e4dbf1 1768 " FAKE_THREADS"
85e1fcb9 1769# endif
6224f72b 1770# ifdef MULTIPLICITY
e2e4dbf1 1771 " MULTIPLICITY"
6224f72b 1772# endif
85e1fcb9 1773# ifdef MYMALLOC
e2e4dbf1 1774 " MYMALLOC"
85e1fcb9 1775# endif
3bcf5ed8
SP
1776# ifdef NO_MATHOMS
1777 " NO_MATHOMS"
1778# endif
85e1fcb9 1779# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1780 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1781# endif
1782# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1783 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1784# endif
1785# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1786 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1787# endif
1788# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1789 " PERL_IMPLICIT_SYS"
85e1fcb9
SH
1790# endif
1791# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1792 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1793# endif
1794# ifdef PERL_NEED_APPCTX
e2e4dbf1 1795 " PERL_NEED_APPCTX"
85e1fcb9
SH
1796# endif
1797# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1798 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1799# endif
1800# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1801 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1802# endif
9c0a4d5d
DM
1803# ifdef PERL_TRACK_MEMPOOL
1804 " PERL_TRACK_MEMPOOL"
1805# endif
417cd4a8
SP
1806# ifdef PERL_USE_SAFE_PUTENV
1807 " PERL_USE_SAFE_PUTENV"
1808# endif
ca0c25f6
NC
1809#ifdef PERL_USES_PL_PIDSTATUS
1810 " PERL_USES_PL_PIDSTATUS"
1811#endif
85e1fcb9 1812# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1813 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1814# endif
1815# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1816 " THREADS_HAVE_PIDS"
85e1fcb9 1817# endif
4d1ff10f 1818# ifdef USE_5005THREADS
e2e4dbf1 1819 " USE_5005THREADS"
b363f7ed 1820# endif
85e1fcb9 1821# ifdef USE_64_BIT_ALL
e2e4dbf1 1822 " USE_64_BIT_ALL"
ac5e8965 1823# endif
10cc9d2a 1824# ifdef USE_64_BIT_INT
e2e4dbf1 1825 " USE_64_BIT_INT"
10cc9d2a 1826# endif
85e1fcb9 1827# ifdef USE_ITHREADS
e2e4dbf1 1828 " USE_ITHREADS"
85e1fcb9
SH
1829# endif
1830# ifdef USE_LARGE_FILES
e2e4dbf1 1831 " USE_LARGE_FILES"
ac5e8965
JH
1832# endif
1833# ifdef USE_LONG_DOUBLE
e2e4dbf1 1834 " USE_LONG_DOUBLE"
ac5e8965 1835# endif
85e1fcb9 1836# ifdef USE_PERLIO
e2e4dbf1 1837 " USE_PERLIO"
53430762 1838# endif
85e1fcb9 1839# ifdef USE_REENTRANT_API
e2e4dbf1 1840 " USE_REENTRANT_API"
85e1fcb9
SH
1841# endif
1842# ifdef USE_SFIO
e2e4dbf1 1843 " USE_SFIO"
ac5e8965 1844# endif
20ef40cf 1845# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1846 " USE_SITECUSTOMIZE"
20ef40cf 1847# endif
85e1fcb9 1848# ifdef USE_SOCKS
e2e4dbf1 1849 " USE_SOCKS"
b363f7ed 1850# endif
e2e4dbf1 1851 );
efcaa95b 1852
7edfd0ef
NC
1853 while (SvCUR(opts_prog) > opts+76) {
1854 /* find last space after "options: " and before col 76
1855 */
efcaa95b 1856
7edfd0ef 1857 const char *space;
c4420975 1858 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1859 const char c = pv[opts+76];
1860 pv[opts+76] = '\0';
1861 space = strrchr(pv+opts+26, ' ');
1862 pv[opts+76] = c;
1863 if (!space) break; /* "Can't happen" */
efcaa95b 1864
7edfd0ef 1865 /* break the line before that space */
efcaa95b 1866
7edfd0ef 1867 opts = space - pv;
89529cee 1868 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1869 STR_WITH_LEN("\\n "));
7edfd0ef 1870 }
efcaa95b 1871
396482e1 1872 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1873
6224f72b 1874#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1875 if (LOCAL_PATCH_COUNT > 0) {
1876 int i;
396482e1 1877 sv_catpvs(opts_prog,
7edfd0ef
NC
1878 "\" Locally applied patches:\\n\",");
1879 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1880 if (PL_localpatches[i])
1881 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1882 0, PL_localpatches[i], 0);
1883 }
6224f72b 1884 }
6224f72b 1885#endif
7edfd0ef
NC
1886 Perl_sv_catpvf(aTHX_ opts_prog,
1887 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1888#ifdef __DATE__
1889# ifdef __TIME__
7edfd0ef
NC
1890 Perl_sv_catpvf(aTHX_ opts_prog,
1891 ",\" Compiled at %s %s\\n\"",__DATE__,
1892 __TIME__);
6224f72b 1893# else
7edfd0ef
NC
1894 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1895 __DATE__);
6224f72b
GS
1896# endif
1897#endif
396482e1 1898 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1899 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1900 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1901#ifdef __CYGWIN__
396482e1 1902 sv_catpvs(opts_prog,
7edfd0ef 1903 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1904#endif
396482e1 1905 sv_catpvs(opts_prog,
7edfd0ef
NC
1906 "print \" \\%ENV:\\n @env\\n\" if @env;"
1907 "print \" \\@INC:\\n @INC\\n\";");
1908 }
1909 else {
1910 ++s;
1911 opts_prog = Perl_newSVpvf(aTHX_
1912 "Config::config_vars(qw%c%s%c)",
1913 0, s, 0);
1914 s += strlen(s);
1915 }
1916 av_push(PL_preambleav, opts_prog);
1917 /* don't look for script or read stdin */
1918 scriptname = BIT_BUCKET;
1919 goto reswitch;
6224f72b 1920 }
6224f72b 1921 case 'x':
3280af22 1922 PL_doextract = TRUE;
6224f72b
GS
1923 s++;
1924 if (*s)
f4c556ac 1925 cddir = s;
6224f72b
GS
1926 break;
1927 case 0:
1928 break;
1929 case '-':
1930 if (!*++s || isSPACE(*s)) {
1931 argc--,argv++;
1932 goto switch_end;
1933 }
1934 /* catch use of gnu style long options */
1935 if (strEQ(s, "version")) {
dd374669 1936 s = (char *)"v";
6224f72b
GS
1937 goto reswitch;
1938 }
1939 if (strEQ(s, "help")) {
dd374669 1940 s = (char *)"h";
6224f72b
GS
1941 goto reswitch;
1942 }
1943 s--;
1944 /* FALL THROUGH */
1945 default:
cea2e8a9 1946 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1947 }
1948 }
6224f72b 1949 switch_end:
54310121 1950
f675dbe5
CB
1951 if (
1952#ifndef SECURE_INTERNAL_GETENV
1953 !PL_tainting &&
1954#endif
cf756827 1955 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1956 {
e1ec3a88 1957 const char *popt = s;
74288ac8
GS
1958 while (isSPACE(*s))
1959 s++;
317ea90d 1960 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1961 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1962 PL_tainting = TRUE;
317ea90d
MS
1963 PL_taint_warn = FALSE;
1964 }
74288ac8 1965 else {
bd61b366 1966 char *popt_copy = NULL;
74288ac8 1967 while (s && *s) {
4ea8f8fb 1968 char *d;
74288ac8
GS
1969 while (isSPACE(*s))
1970 s++;
1971 if (*s == '-') {
1972 s++;
1973 if (isSPACE(*s))
1974 continue;
1975 }
4ea8f8fb 1976 d = s;
74288ac8
GS
1977 if (!*s)
1978 break;
e4af53b0 1979 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 1980 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1981 while (++s && *s) {
1982 if (isSPACE(*s)) {
cf756827
GS
1983 if (!popt_copy) {
1984 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1985 s = popt_copy + (s - popt);
1986 d = popt_copy + (d - popt);
1987 }
4ea8f8fb
MS
1988 *s++ = '\0';
1989 break;
1990 }
1991 }
1c4db469 1992 if (*d == 't') {
317ea90d
MS
1993 if( !PL_tainting ) {
1994 PL_taint_warn = TRUE;
1995 PL_tainting = TRUE;
1996 }
1c4db469 1997 } else {
97bd5664 1998 moreswitches(d);
1c4db469 1999 }
6224f72b 2000 }
6224f72b
GS
2001 }
2002 }
a0d0e21e 2003
20ef40cf
GA
2004#ifdef USE_SITECUSTOMIZE
2005 if (!minus_f) {
2006 if (!PL_preambleav)
2007 PL_preambleav = newAV();
2008 av_unshift(PL_preambleav, 1);
2009 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
2010 }
2011#endif
2012
317ea90d
MS
2013 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
2014 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
2015 }
2016
6224f72b
GS
2017 if (!scriptname)
2018 scriptname = argv[0];
3280af22 2019 if (PL_e_script) {
6224f72b
GS
2020 argc++,argv--;
2021 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2022 }
bd61b366 2023 else if (scriptname == NULL) {
6224f72b
GS
2024#ifdef MSDOS
2025 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2026 moreswitches("h");
6224f72b
GS
2027#endif
2028 scriptname = "-";
2029 }
2030
b7975bdd
NC
2031 /* Set $^X early so that it can be used for relocatable paths in @INC */
2032 assert (!PL_tainted);
2033 TAINT;
2034 S_set_caret_X(aTHX);
2035 TAINT_NOT;
6224f72b
GS
2036 init_perllib();
2037
a52eba0e
NC
2038 {
2039 int suidscript;
2040 const int fdscript
2041 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2042
a52eba0e 2043 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2044
64ca3a65 2045#ifndef PERL_MICRO
a52eba0e
NC
2046# if defined(SIGCHLD) || defined(SIGCLD)
2047 {
2048# ifndef SIGCHLD
2049# define SIGCHLD SIGCLD
2050# endif
2051 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2052 if (sigstate == (Sighandler_t) SIG_IGN) {
2053 if (ckWARN(WARN_SIGNAL))
2054 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2055 "Can't ignore signal CHLD, forcing to default");
2056 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2057 }
0b5b802d 2058 }
a52eba0e 2059# endif
64ca3a65 2060#endif
0b5b802d 2061
a52eba0e 2062 if (PL_doextract
bf4acbe4 2063#ifdef MACOS_TRADITIONAL
a52eba0e 2064 || gMacPerl_AlwaysExtract
bf4acbe4 2065#endif
a52eba0e 2066 ) {
faef540c
NC
2067
2068 /* This will croak if suidscript is >= 0, as -x cannot be used with
2069 setuid scripts. */
2070 forbid_setid('x', suidscript);
2071 /* Hence you can't get here if suidscript >= 0 */
2072
2073 find_beginning();
a52eba0e
NC
2074 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2075 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2076 }
f4c556ac 2077 }
6224f72b 2078
561b68a9 2079 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2080 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2081 CvUNIQUE_on(PL_compcv);
2082
dd2155a4 2083 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 2084#ifdef USE_5005THREADS
533c011a 2085 CvOWNER(PL_compcv) = 0;
a02a5408 2086 Newx(CvMUTEXP(PL_compcv), 1, perl_mutex);
533c011a 2087 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 2088#endif /* USE_5005THREADS */
6224f72b 2089
0c4f7ff0 2090 boot_core_PerlIO();
6224f72b 2091 boot_core_UNIVERSAL();
09bef843 2092 boot_core_xsutils();
6224f72b
GS
2093
2094 if (xsinit)
acfe0abc 2095 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2096#ifndef PERL_MICRO
d0d72822 2097#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2098 init_os_extras();
6224f72b 2099#endif
64ca3a65 2100#endif
6224f72b 2101
29209bc5 2102#ifdef USE_SOCKS
1b9c9cf5
DH
2103# ifdef HAS_SOCKS5_INIT
2104 socks5_init(argv[0]);
2105# else
29209bc5 2106 SOCKSinit(argv[0]);
1b9c9cf5 2107# endif
ac27b0f5 2108#endif
29209bc5 2109
6224f72b
GS
2110 init_predump_symbols();
2111 /* init_postdump_symbols not currently designed to be called */
2112 /* more than once (ENV isn't cleared first, for example) */
2113 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2114 if (!PL_do_undump)
6224f72b
GS
2115 init_postdump_symbols(argc,argv,env);
2116
27da23d5
JH
2117 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2118 * or explicitly in some platforms.
085a54d9 2119 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2120 * look like the user wants to use UTF-8. */
a0fd4948 2121#if defined(__SYMBIAN32__)
27da23d5
JH
2122 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2123#endif
06e66572
JH
2124 if (PL_unicode) {
2125 /* Requires init_predump_symbols(). */
a05d7ebb 2126 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2127 IO* io;
2128 PerlIO* fp;
2129 SV* sv;
2130
a05d7ebb 2131 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2132 * and the default open disciplines. */
a05d7ebb
JH
2133 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2134 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2135 (fp = IoIFP(io)))
2136 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2137 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2138 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2139 (fp = IoOFP(io)))
2140 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2141 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2142 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2143 (fp = IoOFP(io)))
2144 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2145 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2146 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2147 SVt_PV)))) {
a05d7ebb
JH
2148 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2149 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2150 if (in) {
2151 if (out)
2152 sv_setpvn(sv, ":utf8\0:utf8", 11);
2153 else
2154 sv_setpvn(sv, ":utf8\0", 6);
2155 }
2156 else if (out)
2157 sv_setpvn(sv, "\0:utf8", 6);
2158 SvSETMAGIC(sv);
2159 }
b310b053
JH
2160 }
2161 }
2162
4ffa73a3
JH
2163 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2164 if (strEQ(s, "unsafe"))
2165 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2166 else if (strEQ(s, "safe"))
2167 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2168 else
2169 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2170 }
2171
6224f72b
GS
2172 init_lexer();
2173
2174 /* now parse the script */
2175
93189314 2176 SETERRNO(0,SS_NORMAL);
3280af22 2177 PL_error_count = 0;
bf4acbe4
GS
2178#ifdef MACOS_TRADITIONAL
2179 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2180 if (PL_minus_c)
2181 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2182 else {
2183 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2184 MacPerl_MPWFileName(PL_origfilename));
2185 }
2186 }
2187#else
3280af22
NIS
2188 if (yyparse() || PL_error_count) {
2189 if (PL_minus_c)
cea2e8a9 2190 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2191 else {
cea2e8a9 2192 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2193 PL_origfilename);
6224f72b
GS
2194 }
2195 }
bf4acbe4 2196#endif
57843af0 2197 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2198 PL_curstash = PL_defstash;
2199 PL_preprocess = FALSE;
2200 if (PL_e_script) {
2201 SvREFCNT_dec(PL_e_script);
a0714e2c 2202 PL_e_script = NULL;
6224f72b
GS
2203 }
2204
3280af22 2205 if (PL_do_undump)
6224f72b
GS
2206 my_unexec();
2207
57843af0
GS
2208 if (isWARN_ONCE) {
2209 SAVECOPFILE(PL_curcop);
2210 SAVECOPLINE(PL_curcop);
3280af22 2211 gv_check(PL_defstash);
57843af0 2212 }
6224f72b
GS
2213
2214 LEAVE;
2215 FREETMPS;
2216
2217#ifdef MYMALLOC
2218 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2219 dump_mstats("after compilation:");
2220#endif
2221
2222 ENTER;
3280af22 2223 PL_restartop = 0;
312caa8e 2224 return NULL;
6224f72b
GS
2225}
2226
954c1994
GS
2227/*
2228=for apidoc perl_run
2229
2230Tells a Perl interpreter to run. See L<perlembed>.
2231
2232=cut
2233*/
2234
6224f72b 2235int
0cb96387 2236perl_run(pTHXx)
6224f72b 2237{
97aff369 2238 dVAR;
6224f72b 2239 I32 oldscope;
14dd3ad8 2240 int ret = 0;
db36c5a1 2241 dJMPENV;
6224f72b 2242
9d4ba2ae
AL
2243 PERL_UNUSED_ARG(my_perl);
2244
3280af22 2245 oldscope = PL_scopestack_ix;
96e176bf
CL
2246#ifdef VMS
2247 VMSISH_HUSHED = 0;
2248#endif
6224f72b 2249
14dd3ad8 2250 JMPENV_PUSH(ret);
6224f72b
GS
2251 switch (ret) {
2252 case 1:
2253 cxstack_ix = -1; /* start context stack again */
312caa8e 2254 goto redo_body;
14dd3ad8 2255 case 0: /* normal completion */
14dd3ad8
GS
2256 redo_body:
2257 run_body(oldscope);
14dd3ad8
GS
2258 /* FALL THROUGH */
2259 case 2: /* my_exit() */
3280af22 2260 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2261 LEAVE;
2262 FREETMPS;
3280af22 2263 PL_curstash = PL_defstash;
3a1ee7e8 2264 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2265 PL_endav && !PL_minus_c)
2266 call_list(oldscope, PL_endav);
6224f72b
GS
2267#ifdef MYMALLOC
2268 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2269 dump_mstats("after execution: ");
2270#endif
37038d91 2271 ret = STATUS_EXIT;
14dd3ad8 2272 break;
6224f72b 2273 case 3:
312caa8e
CS
2274 if (PL_restartop) {
2275 POPSTACK_TO(PL_mainstack);
2276 goto redo_body;
6224f72b 2277 }
bf49b057 2278 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2279 FREETMPS;
14dd3ad8
GS
2280 ret = 1;
2281 break;
6224f72b
GS
2282 }
2283
14dd3ad8
GS
2284 JMPENV_POP;
2285 return ret;
312caa8e
CS
2286}
2287
14dd3ad8 2288
dd374669 2289STATIC void
14dd3ad8
GS
2290S_run_body(pTHX_ I32 oldscope)
2291{
97aff369 2292 dVAR;
6224f72b 2293 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2294 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2295
3280af22 2296 if (!PL_restartop) {
6224f72b 2297 DEBUG_x(dump_all());
cf2782cd 2298#ifdef DEBUGGING
ecae49c0
NC
2299 if (!DEBUG_q_TEST)
2300 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2301#endif
b900a521
JH
2302 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2303 PTR2UV(thr)));
6224f72b 2304
3280af22 2305 if (PL_minus_c) {
bf4acbe4 2306#ifdef MACOS_TRADITIONAL
e69a2255
JH
2307 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2308 (gMacPerl_ErrorFormat ? "# " : ""),
2309 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2310#else
bf49b057 2311 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2312#endif
6224f72b
GS
2313 my_exit(0);
2314 }
3280af22 2315 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2316 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2317 if (PL_initav)
2318 call_list(oldscope, PL_initav);
6224f72b
GS
2319 }
2320
2321 /* do it */
2322
3280af22 2323 if (PL_restartop) {
533c011a 2324 PL_op = PL_restartop;
3280af22 2325 PL_restartop = 0;
cea2e8a9 2326 CALLRUNOPS(aTHX);
6224f72b 2327 }
3280af22
NIS
2328 else if (PL_main_start) {
2329 CvDEPTH(PL_main_cv) = 1;
533c011a 2330 PL_op = PL_main_start;
cea2e8a9 2331 CALLRUNOPS(aTHX);
6224f72b 2332 }
f6b3007c
JH
2333 my_exit(0);
2334 /* NOTREACHED */
6224f72b
GS
2335}
2336
954c1994 2337/*
ccfc67b7
JH
2338=head1 SV Manipulation Functions
2339
954c1994
GS
2340=for apidoc p||get_sv
2341
2342Returns the SV of the specified Perl scalar. If C<create> is set and the
2343Perl variable does not exist then it will be created. If C<create> is not
2344set and the variable does not exist then NULL is returned.
2345
2346=cut
2347*/
2348
6224f72b 2349SV*
864dbfa3 2350Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2351{
2352 GV *gv;
4d1ff10f 2353#ifdef USE_5005THREADS
6224f72b
GS
2354 if (name[1] == '\0' && !isALPHA(name[0])) {
2355 PADOFFSET tmp = find_threadsv(name);
411caa50 2356 if (tmp != NOT_IN_PAD)
6224f72b 2357 return THREADSV(tmp);
6224f72b 2358 }
4d1ff10f 2359#endif /* USE_5005THREADS */
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)),
4633a7c4 2436 Nullop,
a0d0e21e
LW
2437 Nullop);
2438 if (gv)
8ebc5c01 2439 return GvCVu(gv);
601f1833 2440 return NULL;
a0d0e21e
LW
2441}
2442
79072805
LW
2443/* Be sure to refetch the stack pointer after calling these routines. */
2444
954c1994 2445/*
ccfc67b7
JH
2446
2447=head1 Callback Functions
2448
954c1994
GS
2449=for apidoc p||call_argv
2450
2451Performs a callback to the specified Perl sub. See L<perlcall>.
2452
2453=cut
2454*/
2455
a0d0e21e 2456I32
8f42b153 2457Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2458
8ac85365
NIS
2459 /* See G_* flags in cop.h */
2460 /* null terminated arg list */
8990e307 2461{
97aff369 2462 dVAR;
a0d0e21e 2463 dSP;
8990e307 2464
924508f0 2465 PUSHMARK(SP);
a0d0e21e 2466 if (argv) {
8990e307 2467 while (*argv) {
a0d0e21e 2468 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2469 argv++;
2470 }
a0d0e21e 2471 PUTBACK;
8990e307 2472 }
864dbfa3 2473 return call_pv(sub_name, flags);
8990e307
LW
2474}
2475
954c1994
GS
2476/*
2477=for apidoc p||call_pv
2478
2479Performs a callback to the specified Perl sub. See L<perlcall>.
2480
2481=cut
2482*/
2483
a0d0e21e 2484I32
864dbfa3 2485Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2486 /* name of the subroutine */
2487 /* See G_* flags in cop.h */
a0d0e21e 2488{
864dbfa3 2489 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2490}
2491
954c1994
GS
2492/*
2493=for apidoc p||call_method
2494
2495Performs a callback to the specified Perl method. The blessed object must
2496be on the stack. See L<perlcall>.
2497
2498=cut
2499*/
2500
a0d0e21e 2501I32
864dbfa3 2502Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2503 /* name of the subroutine */
2504 /* See G_* flags in cop.h */
a0d0e21e 2505{
968b3946 2506 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2507}
2508
2509/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2510/*
2511=for apidoc p||call_sv
2512
2513Performs a callback to the Perl sub whose name is in the SV. See
2514L<perlcall>.
2515
2516=cut
2517*/
2518
a0d0e21e 2519I32
864dbfa3 2520Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2521 /* See G_* flags in cop.h */
a0d0e21e 2522{
27da23d5 2523 dVAR; dSP;
a0d0e21e 2524 LOGOP myop; /* fake syntax tree node */
968b3946 2525 UNOP method_op;
aa689395 2526 I32 oldmark;
13689cfe 2527 volatile I32 retval = 0;
a0d0e21e 2528 I32 oldscope;
54310121 2529 bool oldcatch = CATCH_GET;
6224f72b 2530 int ret;
c4420975 2531 OP* const oldop = PL_op;
db36c5a1 2532 dJMPENV;
1e422769 2533
a0d0e21e
LW
2534 if (flags & G_DISCARD) {
2535 ENTER;
2536 SAVETMPS;
2537 }
2538
aa689395 2539 Zero(&myop, 1, LOGOP);
54310121 2540 myop.op_next = Nullop;
f51d4af5 2541 if (!(flags & G_NOARGS))
aa689395 2542 myop.op_flags |= OPf_STACKED;
54310121
PP
2543 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2544 (flags & G_ARRAY) ? OPf_WANT_LIST :
2545 OPf_WANT_SCALAR);
462e5cf6 2546 SAVEOP();
533c011a 2547 PL_op = (OP*)&myop;
aa689395 2548
3280af22
NIS
2549 EXTEND(PL_stack_sp, 1);
2550 *++PL_stack_sp = sv;
aa689395 2551 oldmark = TOPMARK;
3280af22 2552 oldscope = PL_scopestack_ix;
a0d0e21e 2553
3280af22 2554 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2555 /* Handle first BEGIN of -d. */
3280af22 2556 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2557 /* Try harder, since this may have been a sighandler, thus
2558 * curstash may be meaningless. */
3280af22 2559 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2560 && !(flags & G_NODEBUG))
533c011a 2561 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2562
968b3946
GS
2563 if (flags & G_METHOD) {
2564 Zero(&method_op, 1, UNOP);
2565 method_op.op_next = PL_op;
2566 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2567 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2568 PL_op = (OP*)&method_op;
968b3946
GS
2569 }
2570
312caa8e 2571 if (!(flags & G_EVAL)) {
0cdb2077 2572 CATCH_SET(TRUE);
14dd3ad8 2573 call_body((OP*)&myop, FALSE);
312caa8e 2574 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2575 CATCH_SET(oldcatch);
312caa8e
CS
2576 }
2577 else {
d78bda3d 2578 myop.op_other = (OP*)&myop;
3280af22 2579 PL_markstack_ptr--;
4633a7c4
LW
2580 /* we're trying to emulate pp_entertry() here */
2581 {
c09156bb 2582 register PERL_CONTEXT *cx;
f54cb97a 2583 const I32 gimme = GIMME_V;
ac27b0f5 2584
4633a7c4
LW
2585 ENTER;
2586 SAVETMPS;
ac27b0f5 2587
1d76a5c3 2588 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2589 PUSHEVAL(cx, 0, 0);
533c011a 2590 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2591
faef0170 2592 PL_in_eval = EVAL_INEVAL;
4633a7c4 2593 if (flags & G_KEEPERR)
faef0170 2594 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2595 else
c69006e4 2596 sv_setpvn(ERRSV,"",0);
4633a7c4 2597 }
3280af22 2598 PL_markstack_ptr++;
a0d0e21e 2599
14dd3ad8 2600 JMPENV_PUSH(ret);
6224f72b
GS
2601 switch (ret) {
2602 case 0:
14dd3ad8
GS
2603 redo_body:
2604 call_body((OP*)&myop, FALSE);
312caa8e
CS
2605 retval = PL_stack_sp - (PL_stack_base + oldmark);
2606 if (!(flags & G_KEEPERR))
c69006e4 2607 sv_setpvn(ERRSV,"",0);
a0d0e21e 2608 break;
6224f72b 2609 case 1:
f86702cc 2610 STATUS_ALL_FAILURE;
a0d0e21e 2611 /* FALL THROUGH */
6224f72b 2612 case 2:
a0d0e21e 2613 /* my_exit() was called */
3280af22 2614 PL_curstash = PL_defstash;
a0d0e21e 2615 FREETMPS;
14dd3ad8 2616 JMPENV_POP;
cc3604b1 2617 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2618 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2619 my_exit_jump();
a0d0e21e 2620 /* NOTREACHED */
6224f72b 2621 case 3:
3280af22 2622 if (PL_restartop) {
533c011a 2623 PL_op = PL_restartop;
3280af22 2624 PL_restartop = 0;
312caa8e 2625 goto redo_body;
a0d0e21e 2626 }
3280af22 2627 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2628 if (flags & G_ARRAY)
2629 retval = 0;
2630 else {
2631 retval = 1;
3280af22 2632 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2633 }
312caa8e 2634 break;
a0d0e21e 2635 }
a0d0e21e 2636
3280af22 2637 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2638 SV **newsp;
2639 PMOP *newpm;
2640 I32 gimme;
c09156bb 2641 register PERL_CONTEXT *cx;
a0a2876f
LW
2642 I32 optype;
2643
2644 POPBLOCK(cx,newpm);
2645 POPEVAL(cx);
3280af22 2646 PL_curpm = newpm;
a0a2876f 2647 LEAVE;
9d4ba2ae
AL
2648 PERL_UNUSED_VAR(newsp);
2649 PERL_UNUSED_VAR(gimme);
2650 PERL_UNUSED_VAR(optype);
a0d0e21e 2651 }
14dd3ad8 2652 JMPENV_POP;
a0d0e21e 2653 }
1e422769 2654
a0d0e21e 2655 if (flags & G_DISCARD) {
3280af22 2656 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2657 retval = 0;
2658 FREETMPS;
2659 LEAVE;
2660 }
533c011a 2661 PL_op = oldop;
a0d0e21e
LW
2662 return retval;
2663}
2664
312caa8e 2665STATIC void
dd374669 2666S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2667{
97aff369 2668 dVAR;
312caa8e
CS
2669 if (PL_op == myop) {
2670 if (is_eval)
f807eda9 2671 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2672 else
f807eda9 2673 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2674 }
2675 if (PL_op)
cea2e8a9 2676 CALLRUNOPS(aTHX);
312caa8e
CS
2677}
2678
6e72f9df 2679/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2680
954c1994
GS
2681/*
2682=for apidoc p||eval_sv
2683
2684Tells Perl to C<eval> the string in the SV.
2685
2686=cut
2687*/
2688
a0d0e21e 2689I32
864dbfa3 2690Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2691
8ac85365 2692 /* See G_* flags in cop.h */
a0d0e21e 2693{
97aff369 2694 dVAR;
924508f0 2695 dSP;
a0d0e21e 2696 UNOP myop; /* fake syntax tree node */
8fa7f367 2697 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2698 volatile I32 retval = 0;
6224f72b 2699 int ret;
c4420975 2700 OP* const oldop = PL_op;
db36c5a1 2701 dJMPENV;
84902520 2702
4633a7c4
LW
2703 if (flags & G_DISCARD) {
2704 ENTER;
2705 SAVETMPS;
2706 }
2707
462e5cf6 2708 SAVEOP();
533c011a
NIS
2709 PL_op = (OP*)&myop;
2710 Zero(PL_op, 1, UNOP);
3280af22
NIS
2711 EXTEND(PL_stack_sp, 1);
2712 *++PL_stack_sp = sv;
79072805 2713
4633a7c4
LW
2714 if (!(flags & G_NOARGS))
2715 myop.op_flags = OPf_STACKED;
79072805 2716 myop.op_next = Nullop;
6e72f9df 2717 myop.op_type = OP_ENTEREVAL;
54310121
PP
2718 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2719 (flags & G_ARRAY) ? OPf_WANT_LIST :
2720 OPf_WANT_SCALAR);
6e72f9df
PP
2721 if (flags & G_KEEPERR)
2722 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2723
dedbcade
DM
2724 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2725 * before a PUSHEVAL, which corrupts the stack after a croak */
2726 TAINT_PROPER("eval_sv()");
2727
14dd3ad8 2728 JMPENV_PUSH(ret);
6224f72b
GS
2729 switch (ret) {
2730 case 0:
14dd3ad8
GS
2731 redo_body:
2732 call_body((OP*)&myop,TRUE);
312caa8e
CS
2733 retval = PL_stack_sp - (PL_stack_base + oldmark);
2734 if (!(flags & G_KEEPERR))
c69006e4 2735 sv_setpvn(ERRSV,"",0);
4633a7c4 2736 break;
6224f72b 2737 case 1:
f86702cc 2738 STATUS_ALL_FAILURE;
4633a7c4 2739 /* FALL THROUGH */
6224f72b 2740 case 2:
4633a7c4 2741 /* my_exit() was called */
3280af22 2742 PL_curstash = PL_defstash;
4633a7c4 2743 FREETMPS;
14dd3ad8 2744 JMPENV_POP;
cc3604b1 2745 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2746 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2747 my_exit_jump();
4633a7c4 2748 /* NOTREACHED */
6224f72b 2749 case 3:
3280af22 2750 if (PL_restartop) {
533c011a 2751 PL_op = PL_restartop;
3280af22 2752 PL_restartop = 0;
312caa8e 2753 goto redo_body;
4633a7c4 2754 }
3280af22 2755 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2756 if (flags & G_ARRAY)
2757 retval = 0;
2758 else {
2759 retval = 1;
3280af22 2760 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2761 }
312caa8e 2762 break;
4633a7c4
LW
2763 }
2764
14dd3ad8 2765 JMPENV_POP;
4633a7c4 2766 if (flags & G_DISCARD) {
3280af22 2767 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2768 retval = 0;
2769 FREETMPS;
2770 LEAVE;
2771 }
533c011a 2772 PL_op = oldop;
4633a7c4
LW
2773 return retval;
2774}
2775
954c1994
GS
2776/*
2777=for apidoc p||eval_pv
2778
2779Tells Perl to C<eval> the given string and return an SV* result.
2780
2781=cut
2782*/
2783
137443ea 2784SV*
864dbfa3 2785Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2786{
97aff369 2787 dVAR;
137443ea
PP
2788 dSP;
2789 SV* sv = newSVpv(p, 0);
2790
864dbfa3 2791 eval_sv(sv, G_SCALAR);
137443ea
PP
2792 SvREFCNT_dec(sv);
2793
2794 SPAGAIN;
2795 sv = POPs;
2796 PUTBACK;
2797
2d8e6c8d 2798 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2799 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2800 }
137443ea
PP
2801
2802 return sv;
2803}
2804
4633a7c4
LW
2805/* Require a module. */
2806
954c1994 2807/*
ccfc67b7
JH
2808=head1 Embedding Functions
2809
954c1994
GS
2810=for apidoc p||require_pv
2811
7d3fb230
BS
2812Tells Perl to C<require> the file named by the string argument. It is
2813analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2814implemented that way; consider using load_module instead.
954c1994 2815
7d3fb230 2816=cut */
954c1994 2817
4633a7c4 2818void
864dbfa3 2819Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2820{
97aff369 2821 dVAR;
d3acc0f7 2822 dSP;
97aff369 2823 SV* sv;
e788e7d3 2824 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2825 PUTBACK;
be41e5d9
NC
2826 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2827 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2828 SPAGAIN;
2829 POPSTACK;
79072805
LW
2830}
2831
79072805 2832void
e1ec3a88 2833Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2834{
71315bf2 2835 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2836
c4420975 2837 if (gv)
14befaf4 2838 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2839}
2840
76e3520e 2841STATIC void
e1ec3a88 2842S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2843{
ab821d7f 2844 /* This message really ought to be max 23 lines.
75c72d73 2845 * Removed -h because the user already knows that option. Others? */
fb73857a 2846
27da23d5 2847 static const char * const usage_msg[] = {
aefc56c5
SF
2848"-0[octal] specify record separator (\\0, if no argument)",
2849"-A[mod][=pattern] activate all/given assertions",
2850"-a autosplit mode with -n or -p (splits $_ into @F)",
2851"-C[number/list] enables the listed Unicode features",
2852"-c check syntax only (runs BEGIN and CHECK blocks)",
2853"-d[:debugger] run program under debugger",
2854"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2855"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2856"-E program like -e, but enables all optional features",
aefc56c5 2857"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2858"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2859"-i[extension] edit <> files in place (makes backup if extension supplied)",
2860"-Idirectory specify @INC/#include directory (several -I's allowed)",
2861"-l[octal] enable line ending processing, specifies line terminator",
2862"-[mM][-]module execute \"use/no module...\" before executing program",
2863"-n assume \"while (<>) { ... }\" loop around program",
2864"-p assume loop like -n but print line also, like sed",
2865"-P run program through C preprocessor before compilation",
2866"-s enable rudimentary parsing for switches after programfile",
2867"-S look for programfile using PATH environment variable",
2868"-t enable tainting warnings",
2869"-T enable tainting checks",
2870"-u dump core after parsing program",
2871"-U allow unsafe operations",
2872"-v print version, subversion (includes VERY IMPORTANT perl info)",
2873"-V[:variable] print configuration summary (or a single Config.pm variable)",
2874"-w enable many useful warnings (RECOMMENDED)",
2875"-W enable all warnings",
2876"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2877"-X disable all warnings",
fb73857a
PP
2878"\n",
2879NULL
2880};
27da23d5 2881 const char * const *p = usage_msg;
fb73857a 2882
b0e47665
GS
2883 PerlIO_printf(PerlIO_stdout(),
2884 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2885 name);
fb73857a 2886 while (*p)
b0e47665 2887 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2888}
2889
b4ab917c
DM
2890/* convert a string of -D options (or digits) into an int.
2891 * sets *s to point to the char after the options */
2892
2893#ifdef DEBUGGING
2894int
e1ec3a88 2895Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2896{
27da23d5 2897 static const char * const usage_msgd[] = {
e6e64d9b
JC
2898 " Debugging flag values: (see also -d)",
2899 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2900 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2901 " l Context (loop) stack processing",
2902 " t Trace execution",
2903 " o Method and overloading resolution",
2904 " c String/numeric conversions",
2905 " P Print profiling info, preprocessor command for -P, source file input state",
2906 " m Memory allocation",
2907 " f Format processing",
2908 " r Regular expression parsing and execution",
2909 " x Syntax tree dump",
3679267a 2910 " u Tainting checks",
e6e64d9b
JC
2911 " H Hash dump -- usurps values()",
2912 " X Scratchpad allocation",
2913 " D Cleaning up",
2914 " S Thread synchronization",
2915 " T Tokenising",
2916 " R Include reference counts of dumped variables (eg when using -Ds)",
2917 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2918 " v Verbose: use in conjunction with other flags",
2919 " C Copy On Write",
2920 " A Consistency checks on internal structures",
3679267a 2921 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2922 NULL
2923 };
b4ab917c
DM
2924 int i = 0;
2925 if (isALPHA(**s)) {
2926 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2927 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2928
2929 for (; isALNUM(**s); (*s)++) {
c4420975 2930 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2931 if (d)
2932 i |= 1 << (d - debopts);
2933 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2934 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2935 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2936 }
2937 }
e6e64d9b 2938 else if (isDIGIT(**s)) {
b4ab917c
DM
2939 i = atoi(*s);
2940 for (; isALNUM(**s); (*s)++) ;
2941 }
ddcf8bc1 2942 else if (givehelp) {
06e869a4 2943 const char *const *p = usage_msgd;
e6e64d9b
JC
2944 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2945 }
b4ab917c
DM
2946# ifdef EBCDIC
2947 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2948 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2949 "-Dp not implemented on this platform\n");
2950# endif
2951 return i;
2952}
2953#endif
2954
79072805
LW
2955/* This routine handles any switches that can be given during run */
2956
2957char *
97bd5664 2958Perl_moreswitches(pTHX_ char *s)
79072805 2959{
27da23d5 2960 dVAR;
84c133a0 2961 UV rschar;
79072805
LW
2962
2963 switch (*s) {
2964 case '0':
a863c7d1 2965 {
f2095865 2966 I32 flags = 0;
a3b680e6 2967 STRLEN numlen;
f2095865
JH
2968
2969 SvREFCNT_dec(PL_rs);
2970 if (s[1] == 'x' && s[2]) {
a3b680e6 2971 const char *e = s+=2;
f2095865
JH
2972 U8 *tmps;
2973
a3b680e6
AL
2974 while (*e)
2975 e++;
f2095865
JH
2976 numlen = e - s;
2977 flags = PERL_SCAN_SILENT_ILLDIGIT;
2978 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2979 if (s + numlen < e) {
2980 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2981 numlen = 0;
2982 s--;
2983 }
396482e1 2984 PL_rs = newSVpvs("");
c5661c80 2985 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2986 tmps = (U8*)SvPVX(PL_rs);
2987 uvchr_to_utf8(tmps, rschar);
2988 SvCUR_set(PL_rs, UNISKIP(rschar));
2989 SvUTF8_on(PL_rs);
2990 }
2991 else {
2992 numlen = 4;
2993 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2994 if (rschar & ~((U8)~0))
2995 PL_rs = &PL_sv_undef;
2996 else if (!rschar && numlen >= 2)
396482e1 2997 PL_rs = newSVpvs("");
f2095865
JH
2998 else {
2999 char ch = (char)rschar;
3000 PL_rs = newSVpvn(&ch, 1);
3001 }
3002 }
800633c3 3003 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3004 return s + numlen;
a863c7d1 3005 }
46487f74 3006 case 'C':
a05d7ebb 3007 s++;
dd374669 3008 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 3009 return s;
2304df62 3010 case 'F':
3280af22 3011 PL_minus_F = TRUE;
ebce5377
RGS
3012 PL_splitstr = ++s;
3013 while (*s && !isSPACE(*s)) ++s;
3014 *s = '\0';
3015 PL_splitstr = savepv(PL_splitstr);
2304df62 3016 return s;
79072805 3017 case 'a':
3280af22 3018 PL_minus_a = TRUE;
79072805
LW
3019 s++;
3020 return s;
3021 case 'c':
3280af22 3022 PL_minus_c = TRUE;
79072805
LW
3023 s++;
3024 return s;
3025 case 'd':
97bd5664 3026 forbid_setid('d', -1);
4633a7c4 3027 s++;
2cbb2ee1
RGS
3028
3029 /* -dt indicates to the debugger that threads will be used */
3030 if (*s == 't' && !isALNUM(s[1])) {
3031 ++s;
3032 my_setenv("PERL5DB_THREADED", "1");
3033 }
3034
70c94a19
RR
3035 /* The following permits -d:Mod to accepts arguments following an =
3036 in the fashion that -MSome::Mod does. */
3037 if (*s == ':' || *s == '=') {
06b5626a 3038 const char *start;
396482e1 3039 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3040 start = ++s;
3041 /* We now allow -d:Module=Foo,Bar */
3042 while(isALNUM(*s) || *s==':') ++s;
3043 if (*s != '=')
3044 sv_catpv(sv, start);
3045 else {
3046 sv_catpvn(sv, start, s-start);
0c5a913d 3047 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
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
LW
3403{
3404#ifdef UNEXEC
46fc3d4c
PP
3405 SV* prog;
3406 SV* file;
ee580363 3407 int status = 1;
79072805
LW
3408 extern int etext;
3409
ee580363 3410 prog = newSVpv(BIN_EXP, 0);
396482e1 3411 sv_catpvs(prog, "/perl");
6b88bc9c 3412 file = newSVpv(PL_origfilename, 0);
396482e1 3413 sv_catpvs(file, ".perldump");
79072805 3414
ee580363
GS
3415 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3416 /* unexec prints msg to stderr in case of failure */
6ad3d225 3417 PerlProc_exit(status);
79072805 3418#else
a5f75d66
AD
3419# ifdef VMS
3420# include <lib$routines.h>
3421 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3422# elif defined(WIN32) || defined(__CYGWIN__)
3423 Perl_croak(aTHX_ "dump is not supported");
aa689395 3424# else
79072805 3425 ABORT(); /* for use with undump */
aa689395 3426# endif
a5f75d66 3427#endif
79072805
LW
3428}
3429
cb68f92d
GS
3430/* initialize curinterp */
3431STATIC void
cea2e8a9 3432S_init_interp(pTHX)
cb68f92d 3433{
97aff369 3434 dVAR;
acfe0abc
GS
3435#ifdef MULTIPLICITY
3436# define PERLVAR(var,type)
3437# define PERLVARA(var,n,type)
3438# if defined(PERL_IMPLICIT_CONTEXT)
3439# if defined(USE_5005THREADS)
3440# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
27da23d5 3441# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
3442# else /* !USE_5005THREADS */
3443# define PERLVARI(var,type,init) aTHX->var = init;
3444# define PERLVARIC(var,type,init) aTHX->var = init;
3445# endif /* USE_5005THREADS */
3967c732 3446# else
acfe0abc
GS
3447# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3448# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3449# endif
acfe0abc
GS
3450# include "intrpvar.h"
3451# ifndef USE_5005THREADS
3452# include "thrdvar.h"
3453# endif
3454# undef PERLVAR
3455# undef PERLVARA
3456# undef PERLVARI
3457# undef PERLVARIC
3458#else
3459# define PERLVAR(var,type)
3460# define PERLVARA(var,n,type)
3461# define PERLVARI(var,type,init) PL_##var = init;
3462# define PERLVARIC(var,type,init) PL_##var = init;
3463# include "intrpvar.h"
3464# ifndef USE_5005THREADS
3465# include "thrdvar.h"
3466# endif
3467# undef PERLVAR
3468# undef PERLVARA
3469# undef PERLVARI
3470# undef PERLVARIC
cb68f92d
GS
3471#endif
3472
cb68f92d
GS
3473}
3474
76e3520e 3475STATIC void
cea2e8a9 3476S_init_main_stash(pTHX)
79072805 3477{
97aff369 3478 dVAR;
463ee0b2 3479 GV *gv;
6e72f9df 3480
3280af22 3481 PL_curstash = PL_defstash = newHV();
23579a14
NC
3482 /* We know that the string "main" will be in the global shared string
3483 table, so it's a small saving to use it rather than allocate another
3484 8 bytes. */
18916d0d 3485 PL_curstname = newSVpvs_share("main");
fafc274c 3486 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3487 /* If we hadn't caused another reference to "main" to be in the shared
3488 string table above, then it would be worth reordering these two,
3489 because otherwise all we do is delete "main" from it as a consequence
3490 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3491 SvREFCNT_dec(GvHV(gv));
23579a14 3492 hv_name_set(PL_defstash, "main", 4, 0);
3280af22 3493 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3494 SvREADONLY_on(gv);
fafc274c
NC
3495 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3496 SVt_PVAV)));
5fd80ba5 3497 SvREFCNT_inc(PL_incgv); /* Don't allow it to be freed */
3280af22 3498 GvMULTI_on(PL_incgv);
fafc274c 3499