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Abstract all reads/writes of the hints in COPs with 2 new macros,
[perl5.git] / perl.c
CommitLineData
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1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3246d7a3 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
a687059c 5 *
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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
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85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
NC
95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
bf357333
NC
99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
2aa47728
NC
108#endif
109
5311654c
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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
016af4f1
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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;
32e30700
GS
178 PL_Env = ipE;
179 PL_StdIO = ipStd;
180 PL_LIO = ipLIO;
181 PL_Dir = ipD;
182 PL_Sock = ipS;
183 PL_Proc = ipP;
7cb608b5 184 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 185
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186 return my_perl;
187}
188#else
954c1994
GS
189
190/*
ccfc67b7
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191=head1 Embedding Functions
192
954c1994
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193=for apidoc perl_alloc
194
195Allocates a new Perl interpreter. See L<perlembed>.
196
197=cut
198*/
199
93a17b20 200PerlInterpreter *
cea2e8a9 201perl_alloc(void)
79072805 202{
cea2e8a9 203 PerlInterpreter *my_perl;
79072805 204
9f653bb5 205 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 206 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 207
e6827a76 208 S_init_tls_and_interp(my_perl);
7cb608b5 209#ifndef PERL_TRACK_MEMPOOL
07409e01 210 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
211#else
212 Zero(my_perl, 1, PerlInterpreter);
213 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
214 return my_perl;
215#endif
79072805 216}
32e30700 217#endif /* PERL_IMPLICIT_SYS */
79072805 218
954c1994
GS
219/*
220=for apidoc perl_construct
221
222Initializes a new Perl interpreter. See L<perlembed>.
223
224=cut
225*/
226
79072805 227void
0cb96387 228perl_construct(pTHXx)
79072805 229{
27da23d5 230 dVAR;
96a5add6 231 PERL_UNUSED_CONTEXT;
8990e307 232#ifdef MULTIPLICITY
54aff467 233 init_interp();
ac27b0f5 234 PL_perl_destruct_level = 1;
54aff467
GS
235#else
236 if (PL_perl_destruct_level > 0)
237 init_interp();
238#endif
33f46ff6 239 /* Init the real globals (and main thread)? */
3280af22 240 if (!PL_linestr) {
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241 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
242
561b68a9 243 PL_linestr = newSV(79);
3280af22 244 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 245
3280af22 246 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
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247 /* set read-only and try to insure than we wont see REFCNT==0
248 very often */
249
3280af22
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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);
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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
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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);
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NIS
263 SvNV(&PL_sv_yes);
264 SvREADONLY_on(&PL_sv_yes);
265 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
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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
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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;
d4c19fe8 363 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
5336380d
NC
392#ifdef PERL_MAD
393 PL_curforce = -1;
394#endif
395
8990e307 396 ENTER;
79072805
LW
397}
398
954c1994 399/*
62375a60
NIS
400=for apidoc nothreadhook
401
402Stub that provides thread hook for perl_destruct when there are
403no threads.
404
405=cut
406*/
407
408int
4e9e3734 409Perl_nothreadhook(pTHX)
62375a60 410{
96a5add6 411 PERL_UNUSED_CONTEXT;
62375a60
NIS
412 return 0;
413}
414
41e4abd8
NC
415#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
416void
417Perl_dump_sv_child(pTHX_ SV *sv)
418{
419 ssize_t got;
bf357333
NC
420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
422 union control_un control;
423 struct msghdr msg;
808ad2d0 424 struct iovec vec[2];
bf357333 425 struct cmsghdr *cmptr;
808ad2d0
NC
426 int returned_errno;
427 unsigned char buffer[256];
41e4abd8 428
bf357333 429 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
430 return;
431
432 PerlIO_flush(Perl_debug_log);
433
bf357333
NC
434 /* All these shenanigans are to pass a file descriptor over to our child for
435 it to dump out to. We can't let it hold open the file descriptor when it
436 forks, as the file descriptor it will dump to can turn out to be one end
437 of pipe that some other process will wait on for EOF. (So as it would
438 be open, the wait would be forever. */
439
440 msg.msg_control = control.control;
441 msg.msg_controllen = sizeof(control.control);
442 /* We're a connected socket so we don't need a destination */
443 msg.msg_name = NULL;
444 msg.msg_namelen = 0;
445 msg.msg_iov = vec;
808ad2d0 446 msg.msg_iovlen = 1;
bf357333
NC
447
448 cmptr = CMSG_FIRSTHDR(&msg);
449 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
450 cmptr->cmsg_level = SOL_SOCKET;
451 cmptr->cmsg_type = SCM_RIGHTS;
452 *((int *)CMSG_DATA(cmptr)) = 1;
453
454 vec[0].iov_base = (void*)&sv;
455 vec[0].iov_len = sizeof(sv);
456 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
457
458 if(got < 0) {
bf357333 459 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
460 abort();
461 }
bf357333
NC
462 if(got < sizeof(sv)) {
463 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
464 abort();
465 }
466
808ad2d0
NC
467 /* Return protocol is
468 int: errno value
469 unsigned char: length of location string (0 for empty)
470 unsigned char*: string (not terminated)
471 */
472 vec[0].iov_base = (void*)&returned_errno;
473 vec[0].iov_len = sizeof(returned_errno);
474 vec[1].iov_base = buffer;
475 vec[1].iov_len = 1;
476
477 got = readv(sock, vec, 2);
41e4abd8
NC
478
479 if(got < 0) {
480 perror("Debug leaking scalars parent read failed");
808ad2d0 481 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
482 abort();
483 }
808ad2d0 484 if(got < sizeof(returned_errno) + 1) {
41e4abd8 485 perror("Debug leaking scalars parent short read");
808ad2d0 486 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
487 abort();
488 }
489
808ad2d0
NC
490 if (*buffer) {
491 got = read(sock, buffer + 1, *buffer);
492 if(got < 0) {
493 perror("Debug leaking scalars parent read 2 failed");
494 PerlIO_flush(PerlIO_stderr());
495 abort();
496 }
497
498 if(got < *buffer) {
499 perror("Debug leaking scalars parent short read 2");
500 PerlIO_flush(PerlIO_stderr());
501 abort();
502 }
503 }
504
505 if (returned_errno || *buffer) {
506 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
507 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
508 returned_errno, strerror(returned_errno));
41e4abd8
NC
509 }
510}
511#endif
512
62375a60 513/*
954c1994
GS
514=for apidoc perl_destruct
515
516Shuts down a Perl interpreter. See L<perlembed>.
517
518=cut
519*/
520
31d77e54 521int
0cb96387 522perl_destruct(pTHXx)
79072805 523{
27da23d5 524 dVAR;
7c474504 525 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 526 HV *hv;
2aa47728 527#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
528 pid_t child;
529#endif
8990e307 530
96a5add6 531 PERL_UNUSED_CONTEXT;
9d4ba2ae 532
7766f137
GS
533 /* wait for all pseudo-forked children to finish */
534 PERL_WAIT_FOR_CHILDREN;
535
3280af22 536 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
537#ifdef DEBUGGING
538 {
9d4ba2ae
AL
539 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
540 if (s) {
e1ec3a88 541 const int i = atoi(s);
5f05dabc
PP
542 if (destruct_level < i)
543 destruct_level = i;
544 }
4633a7c4
LW
545 }
546#endif
547
27da23d5 548 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
549 dJMPENV;
550 int x = 0;
551
552 JMPENV_PUSH(x);
1b6737cc 553 PERL_UNUSED_VAR(x);
f3faeb53
AB
554 if (PL_endav && !PL_minus_c)
555 call_list(PL_scopestack_ix, PL_endav);
556 JMPENV_POP;
26f423df 557 }
f3faeb53 558 LEAVE;
a0d0e21e
LW
559 FREETMPS;
560
e00b64d4 561 /* Need to flush since END blocks can produce output */
f13a2bc0 562 my_fflush_all();
e00b64d4 563
62375a60
NIS
564 if (CALL_FPTR(PL_threadhook)(aTHX)) {
565 /* Threads hook has vetoed further cleanup */
37038d91 566 return STATUS_EXIT;
62375a60
NIS
567 }
568
2aa47728
NC
569#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
570 if (destruct_level != 0) {
571 /* Fork here to create a child. Our child's job is to preserve the
572 state of scalars prior to destruction, so that we can instruct it
573 to dump any scalars that we later find have leaked.
574 There's no subtlety in this code - it assumes POSIX, and it doesn't
575 fail gracefully */
576 int fd[2];
577
578 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
579 perror("Debug leaking scalars socketpair failed");
580 abort();
581 }
582
583 child = fork();
584 if(child == -1) {
585 perror("Debug leaking scalars fork failed");
586 abort();
587 }
588 if (!child) {
589 /* We are the child */
3125a5a4
NC
590 const int sock = fd[1];
591 const int debug_fd = PerlIO_fileno(Perl_debug_log);
592 int f;
808ad2d0
NC
593 const char *where;
594 /* Our success message is an integer 0, and a char 0 */
595 static const char success[sizeof(int) + 1];
3125a5a4 596
2aa47728 597 close(fd[0]);
2aa47728 598
3125a5a4
NC
599 /* We need to close all other file descriptors otherwise we end up
600 with interesting hangs, where the parent closes its end of a
601 pipe, and sits waiting for (another) child to terminate. Only
602 that child never terminates, because it never gets EOF, because
bf357333
NC
603 we also have the far end of the pipe open. We even need to
604 close the debugging fd, because sometimes it happens to be one
605 end of a pipe, and a process is waiting on the other end for
606 EOF. Normally it would be closed at some point earlier in
607 destruction, but if we happen to cause the pipe to remain open,
608 EOF never occurs, and we get an infinite hang. Hence all the
609 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
610
611 f = sysconf(_SC_OPEN_MAX);
612 if(f < 0) {
808ad2d0
NC
613 where = "sysconf failed";
614 goto abort;
3125a5a4
NC
615 }
616 while (f--) {
617 if (f == sock)
618 continue;
3125a5a4
NC
619 close(f);
620 }
621
2aa47728
NC
622 while (1) {
623 SV *target;
bf357333
NC
624 union control_un control;
625 struct msghdr msg;
626 struct iovec vec[1];
627 struct cmsghdr *cmptr;
628 ssize_t got;
629 int got_fd;
630
631 msg.msg_control = control.control;
632 msg.msg_controllen = sizeof(control.control);
633 /* We're a connected socket so we don't need a source */
634 msg.msg_name = NULL;
635 msg.msg_namelen = 0;
636 msg.msg_iov = vec;
637 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
638
639 vec[0].iov_base = (void*)&target;
640 vec[0].iov_len = sizeof(target);
641
642 got = recvmsg(sock, &msg, 0);
2aa47728
NC
643
644 if(got == 0)
645 break;
646 if(got < 0) {
808ad2d0
NC
647 where = "recv failed";
648 goto abort;
2aa47728
NC
649 }
650 if(got < sizeof(target)) {
808ad2d0
NC
651 where = "short recv";
652 goto abort;
2aa47728 653 }
bf357333 654
808ad2d0
NC
655 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
656 where = "no cmsg";
657 goto abort;
658 }
659 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
660 where = "wrong cmsg_len";
661 goto abort;
662 }
663 if(cmptr->cmsg_level != SOL_SOCKET) {
664 where = "wrong cmsg_level";
665 goto abort;
666 }
667 if(cmptr->cmsg_type != SCM_RIGHTS) {
668 where = "wrong cmsg_type";
669 goto abort;
670 }
bf357333
NC
671
672 got_fd = *(int*)CMSG_DATA(cmptr);
673 /* For our last little bit of trickery, put the file descriptor
674 back into Perl_debug_log, as if we never actually closed it
675 */
808ad2d0
NC
676 if(got_fd != debug_fd) {
677 if (dup2(got_fd, debug_fd) == -1) {
678 where = "dup2";
679 goto abort;
680 }
681 }
2aa47728 682 sv_dump(target);
bf357333 683
2aa47728
NC
684 PerlIO_flush(Perl_debug_log);
685
808ad2d0 686 got = write(sock, &success, sizeof(success));
2aa47728
NC
687
688 if(got < 0) {
808ad2d0
NC
689 where = "write failed";
690 goto abort;
2aa47728 691 }
808ad2d0
NC
692 if(got < sizeof(success)) {
693 where = "short write";
694 goto abort;
2aa47728
NC
695 }
696 }
697 _exit(0);
808ad2d0
NC
698 abort:
699 {
700 int send_errno = errno;
701 unsigned char length = (unsigned char) strlen(where);
702 struct iovec failure[3] = {
703 {(void*)&send_errno, sizeof(send_errno)},
704 {&length, 1},
705 {(void*)where, length}
706 };
707 int got = writev(sock, failure, 3);
708 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
709 in the parent if we try to read from the socketpair after the
710 child has exited, even if there was data to read.
711 So sleep a bit to give the parent a fighting chance of
712 reading the data. */
713 sleep(2);
714 _exit((got == -1) ? errno : 0);
715 }
bf357333 716 /* End of child. */
2aa47728 717 }
41e4abd8 718 PL_dumper_fd = fd[0];
2aa47728
NC
719 close(fd[1]);
720 }
721#endif
722
ff0cee69
PP
723 /* We must account for everything. */
724
725 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
726 /* Do this now, because destroying ops can cause new SVs to be generated
727 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
728 PL_curcop to point to a valid op from which the filename structure
729 member is copied. */
730 PL_curcop = &PL_compiling;
3280af22 731 if (PL_main_root) {
4e380990
DM
732 /* ensure comppad/curpad to refer to main's pad */
733 if (CvPADLIST(PL_main_cv)) {
734 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
735 }
3280af22 736 op_free(PL_main_root);
5f66b61c 737 PL_main_root = NULL;
a0d0e21e 738 }
5f66b61c 739 PL_main_start = NULL;
3280af22 740 SvREFCNT_dec(PL_main_cv);
601f1833 741 PL_main_cv = NULL;
24d3c518 742 PL_dirty = TRUE;
ff0cee69 743
13621cfb
NIS
744 /* Tell PerlIO we are about to tear things apart in case
745 we have layers which are using resources that should
746 be cleaned up now.
747 */
748
749 PerlIO_destruct(aTHX);
750
3280af22 751 if (PL_sv_objcount) {
a0d0e21e
LW
752 /*
753 * Try to destruct global references. We do this first so that the
754 * destructors and destructees still exist. Some sv's might remain.
755 * Non-referenced objects are on their own.
756 */
a0d0e21e 757 sv_clean_objs();
bf9cdc68 758 PL_sv_objcount = 0;
a0de6cf5 759 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 760 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
761 }
762
5cd24f17 763 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 764 SvREFCNT_dec(PL_warnhook);
a0714e2c 765 PL_warnhook = NULL;
3280af22 766 SvREFCNT_dec(PL_diehook);
a0714e2c 767 PL_diehook = NULL;
5cd24f17 768
4b556e6c 769 /* call exit list functions */
3280af22 770 while (PL_exitlistlen-- > 0)
acfe0abc 771 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 772
3280af22 773 Safefree(PL_exitlist);
4b556e6c 774
1c4916e5
CB
775 PL_exitlist = NULL;
776 PL_exitlistlen = 0;
777
a0d0e21e 778 if (destruct_level == 0){
8990e307 779
a0d0e21e 780 DEBUG_P(debprofdump());
ac27b0f5 781
56a2bab7
NIS
782#if defined(PERLIO_LAYERS)
783 /* No more IO - including error messages ! */
784 PerlIO_cleanup(aTHX);
785#endif
786
a0d0e21e 787 /* The exit() function will do everything that needs doing. */
37038d91 788 return STATUS_EXIT;
a0d0e21e 789 }
5dd60ef7 790
551a8b83 791 /* jettison our possibly duplicated environment */
4b647fb0
DM
792 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
793 * so we certainly shouldn't free it here
794 */
2f42fcb0 795#ifndef PERL_MICRO
4b647fb0 796#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 797 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
798#ifdef USE_ITHREADS
799 /* only main thread can free environ[0] contents */
800 && PL_curinterp == aTHX
801#endif
802 )
803 {
551a8b83
JH
804 I32 i;
805
806 for (i = 0; environ[i]; i++)
4b420006 807 safesysfree(environ[i]);
0631ea03 808
4b420006
JH
809 /* Must use safesysfree() when working with environ. */
810 safesysfree(environ);
551a8b83
JH
811
812 environ = PL_origenviron;
813 }
814#endif
2f42fcb0 815#endif /* !PERL_MICRO */
551a8b83 816
804ffa60 817 /* reset so print() ends up where we expect */
a0714e2c 818 setdefout(NULL);
804ffa60 819
5f8cb046
DM
820#ifdef USE_ITHREADS
821 /* the syntax tree is shared between clones
822 * so op_free(PL_main_root) only ReREFCNT_dec's
823 * REGEXPs in the parent interpreter
824 * we need to manually ReREFCNT_dec for the clones
825 */
826 {
827 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 828 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
829
830 while (i) {
c4420975 831 SV * const resv = ary[--i];
35061a7e
DM
832
833 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 834 /* this is PL_reg_curpm, already freed
35061a7e
DM
835 * flag is set in regexec.c:S_regtry
836 */
837 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 838 }
1cc8b4c5
AB
839 else if(SvREPADTMP(resv)) {
840 SvREPADTMP_off(resv);
841 }
a560f29b
NC
842 else if(SvIOKp(resv)) {
843 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
844 ReREFCNT_dec(re);
845 }
846 }
847 }
848 SvREFCNT_dec(PL_regex_padav);
7d49f689 849 PL_regex_padav = NULL;
5f8cb046
DM
850 PL_regex_pad = NULL;
851#endif
852
081fc587
AB
853 SvREFCNT_dec((SV*) PL_stashcache);
854 PL_stashcache = NULL;
855
5f05dabc
PP
856 /* loosen bonds of global variables */
857
3280af22
NIS
858 if(PL_rsfp) {
859 (void)PerlIO_close(PL_rsfp);
4608196e 860 PL_rsfp = NULL;
8ebc5c01
PP
861 }
862
863 /* Filters for program text */
3280af22 864 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 865 PL_rsfp_filters = NULL;
8ebc5c01
PP
866
867 /* switches */
3280af22
NIS
868 PL_preprocess = FALSE;
869 PL_minus_n = FALSE;
870 PL_minus_p = FALSE;
871 PL_minus_l = FALSE;
872 PL_minus_a = FALSE;
873 PL_minus_F = FALSE;
874 PL_doswitches = FALSE;
599cee73 875 PL_dowarn = G_WARN_OFF;
3280af22
NIS
876 PL_doextract = FALSE;
877 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
878 PL_unsafe = FALSE;
879
880 Safefree(PL_inplace);
bd61b366 881 PL_inplace = NULL;
a7cb1f99 882 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
883
884 if (PL_e_script) {
885 SvREFCNT_dec(PL_e_script);
a0714e2c 886 PL_e_script = NULL;
8ebc5c01
PP
887 }
888
bf9cdc68
RG
889 PL_perldb = 0;
890
8ebc5c01
PP
891 /* magical thingies */
892
7889fe52 893 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 894 PL_ofs_sv = NULL;
5f05dabc 895
7889fe52 896 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 897 PL_ors_sv = NULL;
8ebc5c01 898
3280af22 899 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 900 PL_rs = NULL;
dc92893f 901
d33b2eba 902 Safefree(PL_osname); /* $^O */
bd61b366 903 PL_osname = NULL;
5f05dabc 904
3280af22 905 SvREFCNT_dec(PL_statname);
a0714e2c
SS
906 PL_statname = NULL;
907 PL_statgv = NULL;
5f05dabc 908
8ebc5c01
PP
909 /* defgv, aka *_ should be taken care of elsewhere */
910
8ebc5c01 911 /* clean up after study() */
3280af22 912 SvREFCNT_dec(PL_lastscream);
a0714e2c 913 PL_lastscream = NULL;
3280af22
NIS
914 Safefree(PL_screamfirst);
915 PL_screamfirst = 0;
916 Safefree(PL_screamnext);
917 PL_screamnext = 0;
8ebc5c01 918
7d5ea4e7
GS
919 /* float buffer */
920 Safefree(PL_efloatbuf);
bd61b366 921 PL_efloatbuf = NULL;
7d5ea4e7
GS
922 PL_efloatsize = 0;
923
8ebc5c01 924 /* startup and shutdown function lists */
3280af22 925 SvREFCNT_dec(PL_beginav);
5a837c8f 926 SvREFCNT_dec(PL_beginav_save);
3280af22 927 SvREFCNT_dec(PL_endav);
7d30b5c4 928 SvREFCNT_dec(PL_checkav);
ece599bd 929 SvREFCNT_dec(PL_checkav_save);
3280af22 930 SvREFCNT_dec(PL_initav);
7d49f689
NC
931 PL_beginav = NULL;
932 PL_beginav_save = NULL;
933 PL_endav = NULL;
934 PL_checkav = NULL;
935 PL_checkav_save = NULL;
936 PL_initav = NULL;
5618dfe8 937
8ebc5c01 938 /* shortcuts just get cleared */
a0714e2c
SS
939 PL_envgv = NULL;
940 PL_incgv = NULL;
941 PL_hintgv = NULL;
942 PL_errgv = NULL;
943 PL_argvgv = NULL;
944 PL_argvoutgv = NULL;
945 PL_stdingv = NULL;
946 PL_stderrgv = NULL;
947 PL_last_in_gv = NULL;
948 PL_replgv = NULL;
949 PL_DBgv = NULL;
950 PL_DBline = NULL;
951 PL_DBsub = NULL;
952 PL_DBsingle = NULL;
953 PL_DBtrace = NULL;
954 PL_DBsignal = NULL;
955 PL_DBassertion = NULL;
601f1833 956 PL_DBcv = NULL;
7d49f689 957 PL_dbargs = NULL;
5c284bb0 958 PL_debstash = NULL;
8ebc5c01 959
7a1c5554 960 SvREFCNT_dec(PL_argvout_stack);
7d49f689 961 PL_argvout_stack = NULL;
8ebc5c01 962
5c831c24 963 SvREFCNT_dec(PL_modglobal);
5c284bb0 964 PL_modglobal = NULL;
5c831c24 965 SvREFCNT_dec(PL_preambleav);
7d49f689 966 PL_preambleav = NULL;
5c831c24 967 SvREFCNT_dec(PL_subname);
a0714e2c 968 PL_subname = NULL;
5c831c24 969 SvREFCNT_dec(PL_linestr);
a0714e2c 970 PL_linestr = NULL;
ca0c25f6 971#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 972 SvREFCNT_dec(PL_pidstatus);
5c284bb0 973 PL_pidstatus = NULL;
ca0c25f6 974#endif
5c831c24 975 SvREFCNT_dec(PL_toptarget);
a0714e2c 976 PL_toptarget = NULL;
5c831c24 977 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
978 PL_bodytarget = NULL;
979 PL_formtarget = NULL;
5c831c24 980
d33b2eba 981 /* free locale stuff */
b9582b6a 982#ifdef USE_LOCALE_COLLATE
d33b2eba 983 Safefree(PL_collation_name);
bd61b366 984 PL_collation_name = NULL;
b9582b6a 985#endif
d33b2eba 986
b9582b6a 987#ifdef USE_LOCALE_NUMERIC
d33b2eba 988 Safefree(PL_numeric_name);
bd61b366 989 PL_numeric_name = NULL;
a453c169 990 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 991 PL_numeric_radix_sv = NULL;
b9582b6a 992#endif
d33b2eba 993
5c831c24
GS
994 /* clear utf8 character classes */
995 SvREFCNT_dec(PL_utf8_alnum);
996 SvREFCNT_dec(PL_utf8_alnumc);
997 SvREFCNT_dec(PL_utf8_ascii);
998 SvREFCNT_dec(PL_utf8_alpha);
999 SvREFCNT_dec(PL_utf8_space);
1000 SvREFCNT_dec(PL_utf8_cntrl);
1001 SvREFCNT_dec(PL_utf8_graph);
1002 SvREFCNT_dec(PL_utf8_digit);
1003 SvREFCNT_dec(PL_utf8_upper);
1004 SvREFCNT_dec(PL_utf8_lower);
1005 SvREFCNT_dec(PL_utf8_print);
1006 SvREFCNT_dec(PL_utf8_punct);
1007 SvREFCNT_dec(PL_utf8_xdigit);
1008 SvREFCNT_dec(PL_utf8_mark);
1009 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1010 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1011 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1012 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1013 SvREFCNT_dec(PL_utf8_idstart);
1014 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1015 PL_utf8_alnum = NULL;
1016 PL_utf8_alnumc = NULL;
1017 PL_utf8_ascii = NULL;
1018 PL_utf8_alpha = NULL;
1019 PL_utf8_space = NULL;
1020 PL_utf8_cntrl = NULL;
1021 PL_utf8_graph = NULL;
1022 PL_utf8_digit = NULL;
1023 PL_utf8_upper = NULL;
1024 PL_utf8_lower = NULL;
1025 PL_utf8_print = NULL;
1026 PL_utf8_punct = NULL;
1027 PL_utf8_xdigit = NULL;
1028 PL_utf8_mark = NULL;
1029 PL_utf8_toupper = NULL;
1030 PL_utf8_totitle = NULL;
1031 PL_utf8_tolower = NULL;
1032 PL_utf8_tofold = NULL;
1033 PL_utf8_idstart = NULL;
1034 PL_utf8_idcont = NULL;
5c831c24 1035
971a9dd3
GS
1036 if (!specialWARN(PL_compiling.cop_warnings))
1037 SvREFCNT_dec(PL_compiling.cop_warnings);
a0714e2c 1038 PL_compiling.cop_warnings = NULL;
ac27b0f5
NIS
1039 if (!specialCopIO(PL_compiling.cop_io))
1040 SvREFCNT_dec(PL_compiling.cop_io);
a0714e2c 1041 PL_compiling.cop_io = NULL;
b3ca2e83
NC
1042 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints);
1043 PL_compiling.cop_hints = NULL;
05ec9bb3
NIS
1044 CopFILE_free(&PL_compiling);
1045 CopSTASH_free(&PL_compiling);
5c831c24 1046
a0d0e21e 1047 /* Prepare to destruct main symbol table. */
5f05dabc 1048
3280af22
NIS
1049 hv = PL_defstash;
1050 PL_defstash = 0;
a0d0e21e 1051 SvREFCNT_dec(hv);
5c831c24 1052 SvREFCNT_dec(PL_curstname);
a0714e2c 1053 PL_curstname = NULL;
a0d0e21e 1054
5a844595
GS
1055 /* clear queued errors */
1056 SvREFCNT_dec(PL_errors);
a0714e2c 1057 PL_errors = NULL;
5a844595 1058
a0d0e21e 1059 FREETMPS;
0453d815 1060 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1061 if (PL_scopestack_ix != 0)
9014280d 1062 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1063 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1064 (long)PL_scopestack_ix);
1065 if (PL_savestack_ix != 0)
9014280d 1066 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1067 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1068 (long)PL_savestack_ix);
1069 if (PL_tmps_floor != -1)
9014280d 1070 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1071 (long)PL_tmps_floor + 1);
a0d0e21e 1072 if (cxstack_ix != -1)
9014280d 1073 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1074 (long)cxstack_ix + 1);
a0d0e21e 1075 }
8990e307
LW
1076
1077 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1078 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1079 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1080
1081 /* the 2 is for PL_fdpid and PL_strtab */
1082 while (PL_sv_count > 2 && sv_clean_all())
1083 ;
1084
d33b2eba
GS
1085 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1086 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1087 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1088 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1089
d4777f27
GS
1090 AvREAL_off(PL_fdpid); /* no surviving entries */
1091 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1092 PL_fdpid = NULL;
d33b2eba 1093
6c644e78
GS
1094#ifdef HAVE_INTERP_INTERN
1095 sys_intern_clear();
1096#endif
1097
6e72f9df
PP
1098 /* Destruct the global string table. */
1099 {
1100 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1101 * so that sv_free() won't fail on them.
80459961
NC
1102 * Now that the global string table is using a single hunk of memory
1103 * for both HE and HEK, we either need to explicitly unshare it the
1104 * correct way, or actually free things here.
6e72f9df 1105 */
80459961
NC
1106 I32 riter = 0;
1107 const I32 max = HvMAX(PL_strtab);
c4420975 1108 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1109 HE *hent = array[0];
1110
6e72f9df 1111 for (;;) {
0453d815 1112 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1113 HE * const next = HeNEXT(hent);
9014280d 1114 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1115 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1116 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1117 Safefree(hent);
1118 hent = next;
6e72f9df
PP
1119 }
1120 if (!hent) {
1121 if (++riter > max)
1122 break;
1123 hent = array[riter];
1124 }
1125 }
80459961
NC
1126
1127 Safefree(array);
1128 HvARRAY(PL_strtab) = 0;
1129 HvTOTALKEYS(PL_strtab) = 0;
1130 HvFILL(PL_strtab) = 0;
6e72f9df 1131 }
3280af22 1132 SvREFCNT_dec(PL_strtab);
6e72f9df 1133
e652bb2f 1134#ifdef USE_ITHREADS
c21d1a0f 1135 /* free the pointer tables used for cloning */
a0739874 1136 ptr_table_free(PL_ptr_table);
bf9cdc68 1137 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1138#endif
a0739874 1139
d33b2eba
GS
1140 /* free special SVs */
1141
1142 SvREFCNT(&PL_sv_yes) = 0;
1143 sv_clear(&PL_sv_yes);
1144 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1145 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1146
1147 SvREFCNT(&PL_sv_no) = 0;
1148 sv_clear(&PL_sv_no);
1149 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1150 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1151
9f375a43
DM
1152 {
1153 int i;
1154 for (i=0; i<=2; i++) {
1155 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1156 sv_clear(PERL_DEBUG_PAD(i));
1157 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1158 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1159 }
1160 }
1161
0453d815 1162 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1163 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1164
eba0f806
DM
1165#ifdef DEBUG_LEAKING_SCALARS
1166 if (PL_sv_count != 0) {
1167 SV* sva;
1168 SV* sv;
1169 register SV* svend;
1170
1171 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1172 svend = &sva[SvREFCNT(sva)];
1173 for (sv = sva + 1; sv < svend; ++sv) {
1174 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1175 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1176 " flags=0x%"UVxf
fd0854ff
DM
1177 " refcnt=%"UVuf pTHX__FORMAT "\n"
1178 "\tallocated at %s:%d %s %s%s\n",
1179 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1180 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1181 sv->sv_debug_line,
1182 sv->sv_debug_inpad ? "for" : "by",
1183 sv->sv_debug_optype ?
1184 PL_op_name[sv->sv_debug_optype]: "(none)",
1185 sv->sv_debug_cloned ? " (cloned)" : ""
1186 );
2aa47728 1187#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1188 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1189#endif
eba0f806
DM
1190 }
1191 }
1192 }
1193 }
2aa47728
NC
1194#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1195 {
1196 int status;
1197 fd_set rset;
1198 /* Wait for up to 4 seconds for child to terminate.
1199 This seems to be the least effort way of timing out on reaping
1200 its exit status. */
1201 struct timeval waitfor = {4, 0};
41e4abd8 1202 int sock = PL_dumper_fd;
2aa47728
NC
1203
1204 shutdown(sock, 1);
1205 FD_ZERO(&rset);
1206 FD_SET(sock, &rset);
1207 select(sock + 1, &rset, NULL, NULL, &waitfor);
1208 waitpid(child, &status, WNOHANG);
1209 close(sock);
1210 }
1211#endif
eba0f806 1212#endif
bf9cdc68 1213 PL_sv_count = 0;
eba0f806
DM
1214
1215
56a2bab7 1216#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1217 /* No more IO - including error messages ! */
1218 PerlIO_cleanup(aTHX);
1219#endif
1220
9f4bd222 1221 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1222 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1223 for no arg - and will try and SvREFCNT_dec it.
1224 */
1225 SvREFCNT(&PL_sv_undef) = 0;
1226 SvREADONLY_off(&PL_sv_undef);
1227
3280af22 1228 Safefree(PL_origfilename);
bd61b366 1229 PL_origfilename = NULL;
3280af22 1230 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1231 PL_reg_start_tmp = (char**)NULL;
1232 PL_reg_start_tmpl = 0;
43c5f42d 1233 Safefree(PL_reg_curpm);
82ba1be6 1234 Safefree(PL_reg_poscache);
dd28f7bb 1235 free_tied_hv_pool();
3280af22 1236 Safefree(PL_op_mask);
cf36064f 1237 Safefree(PL_psig_ptr);
bf9cdc68 1238 PL_psig_ptr = (SV**)NULL;
cf36064f 1239 Safefree(PL_psig_name);
bf9cdc68 1240 PL_psig_name = (SV**)NULL;
2c2666fc 1241 Safefree(PL_bitcount);
bd61b366 1242 PL_bitcount = NULL;
ce08f86c 1243 Safefree(PL_psig_pend);
bf9cdc68 1244 PL_psig_pend = (int*)NULL;
a0714e2c 1245 PL_formfeed = NULL;
6e72f9df 1246 nuke_stacks();
bf9cdc68
RG
1247 PL_tainting = FALSE;
1248 PL_taint_warn = FALSE;
3280af22 1249 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1250 PL_debug = 0;
ac27b0f5 1251
a0d0e21e 1252 DEBUG_P(debprofdump());
d33b2eba 1253
e5dd39fc 1254#ifdef USE_REENTRANT_API
10bc17b6 1255 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1256#endif
1257
612f20c3
GS
1258 sv_free_arenas();
1259
fc36a67e
PP
1260 /* As the absolutely last thing, free the non-arena SV for mess() */
1261
3280af22 1262 if (PL_mess_sv) {
f350b448
NC
1263 /* we know that type == SVt_PVMG */
1264
9c63abab 1265 /* it could have accumulated taint magic */
f350b448
NC
1266 MAGIC* mg;
1267 MAGIC* moremagic;
1268 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1269 moremagic = mg->mg_moremagic;
1270 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1271 && mg->mg_len >= 0)
1272 Safefree(mg->mg_ptr);
1273 Safefree(mg);
9c63abab 1274 }
f350b448 1275
fc36a67e 1276 /* we know that type >= SVt_PV */
8bd4d4c5 1277 SvPV_free(PL_mess_sv);
3280af22
NIS
1278 Safefree(SvANY(PL_mess_sv));
1279 Safefree(PL_mess_sv);
a0714e2c 1280 PL_mess_sv = NULL;
fc36a67e 1281 }
37038d91 1282 return STATUS_EXIT;
79072805
LW
1283}
1284
954c1994
GS
1285/*
1286=for apidoc perl_free
1287
1288Releases a Perl interpreter. See L<perlembed>.
1289
1290=cut
1291*/
1292
79072805 1293void
0cb96387 1294perl_free(pTHXx)
79072805 1295{
7cb608b5 1296#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1297 {
1298 /*
1299 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1300 * value as we're probably hunting memory leaks then
1301 */
1302 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1303 if (!s || atoi(s) == 0) {
1304 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1305 thread at thread exit. */
1306 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1307 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1308 }
1309 }
7cb608b5
NC
1310#endif
1311
acfe0abc 1312#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1313# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1314 {
acfe0abc 1315# ifdef NETWARE
7af12a34 1316 void *host = nw_internal_host;
acfe0abc 1317# else
7af12a34 1318 void *host = w32_internal_host;
acfe0abc 1319# endif
7af12a34 1320 PerlMem_free(aTHXx);
acfe0abc 1321# ifdef NETWARE
7af12a34 1322 nw_delete_internal_host(host);
acfe0abc 1323# else
7af12a34 1324 win32_delete_internal_host(host);
acfe0abc 1325# endif
7af12a34 1326 }
1c0ca838
GS
1327# else
1328 PerlMem_free(aTHXx);
1329# endif
acfe0abc
GS
1330#else
1331 PerlMem_free(aTHXx);
76e3520e 1332#endif
79072805
LW
1333}
1334
b7f7fff6 1335#if defined(USE_ITHREADS)
aebd1ac7
GA
1336/* provide destructors to clean up the thread key when libperl is unloaded */
1337#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1338
826955bd 1339#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7
GA
1340#pragma fini "perl_fini"
1341#endif
1342
0dbb1585
AL
1343static void
1344#if defined(__GNUC__)
1345__attribute__((destructor))
aebd1ac7 1346#endif
de009b76 1347perl_fini(void)
aebd1ac7 1348{
27da23d5 1349 dVAR;
aebd1ac7
GA
1350 if (PL_curinterp)
1351 FREE_THREAD_KEY;
1352}
1353
1354#endif /* WIN32 */
1355#endif /* THREADS */
1356
4b556e6c 1357void
864dbfa3 1358Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1359{
97aff369 1360 dVAR;
3280af22
NIS
1361 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1362 PL_exitlist[PL_exitlistlen].fn = fn;
1363 PL_exitlist[PL_exitlistlen].ptr = ptr;
1364 ++PL_exitlistlen;
4b556e6c
JD
1365}
1366
56cf6df8
RGS
1367#ifdef HAS_PROCSELFEXE
1368/* This is a function so that we don't hold on to MAXPATHLEN
1369 bytes of stack longer than necessary
1370 */
1371STATIC void
e1ec3a88 1372S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1373{
1374 char buf[MAXPATHLEN];
1375 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1376
1377 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1378 includes a spurious NUL which will cause $^X to fail in system
1379 or backticks (this will prevent extensions from being built and
1380 many tests from working). readlink is not meant to add a NUL.
1381 Normal readlink works fine.
1382 */
1383 if (len > 0 && buf[len-1] == '\0') {
1384 len--;
1385 }
1386
1387 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1388 returning the text "unknown" from the readlink rather than the path
1389 to the executable (or returning an error from the readlink). Any valid
1390 path has a '/' in it somewhere, so use that to validate the result.
1391 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1392 */
1393 if (len > 0 && memchr(buf, '/', len)) {
1394 sv_setpvn(sv,buf,len);
1395 }
1396 else {
1397 sv_setpv(sv,arg0);
1398 }
1399}
1400#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1401
1402STATIC void
1403S_set_caret_X(pTHX) {
97aff369 1404 dVAR;
fafc274c 1405 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1406 if (tmpgv) {
1407#ifdef HAS_PROCSELFEXE
1408 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1409#else
1410#ifdef OS2
c69033f2 1411 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1412#else
c69033f2 1413 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1414#endif
1415#endif
1416 }
1417}
1418
954c1994
GS
1419/*
1420=for apidoc perl_parse
1421
1422Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1423
1424=cut
1425*/
1426
79072805 1427int
0cb96387 1428perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1429{
27da23d5 1430 dVAR;
6224f72b 1431 I32 oldscope;
6224f72b 1432 int ret;
db36c5a1 1433 dJMPENV;
8d063cd8 1434
9d4ba2ae
AL
1435 PERL_UNUSED_VAR(my_perl);
1436
a687059c
LW
1437#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1438#ifdef IAMSUID
1439#undef IAMSUID
cea2e8a9 1440 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1441setuid perl scripts securely.\n");
ae3f3efd 1442#endif /* IAMSUID */
a687059c
LW
1443#endif
1444
b0891165
JH
1445#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1446 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1447 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1448 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1449 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1450 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1451 if (!PL_rehash_seed_set)
1452 PL_rehash_seed = get_hash_seed();
b0891165 1453 {
9d4ba2ae 1454 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1455
1b6737cc
AL
1456 if (s && (atoi(s) == 1))
1457 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1458 }
1459#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1460
3280af22 1461 PL_origargc = argc;
e2975953 1462 PL_origargv = argv;
a0d0e21e 1463
a2722ac9
GA
1464 if (PL_origalen != 0) {
1465 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1466 }
1467 else {
3cb9023d
JH
1468 /* Set PL_origalen be the sum of the contiguous argv[]
1469 * elements plus the size of the env in case that it is
e9137a8e 1470 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1471 * as the maximum modifiable length of $0. In the worst case
1472 * the area we are able to modify is limited to the size of
43c32782 1473 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1474 * --jhi */
e1ec3a88 1475 const char *s = NULL;
54bfe034 1476 int i;
1b6737cc 1477 const UV mask =
7d8e7db3 1478 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1479 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1480 const UV aligned =
43c32782
JH
1481 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1482
1483 /* See if all the arguments are contiguous in memory. Note
1484 * that 'contiguous' is a loose term because some platforms
1485 * align the argv[] and the envp[]. If the arguments look
1486 * like non-aligned, assume that they are 'strictly' or
1487 * 'traditionally' contiguous. If the arguments look like
1488 * aligned, we just check that they are within aligned
1489 * PTRSIZE bytes. As long as no system has something bizarre
1490 * like the argv[] interleaved with some other data, we are
1491 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1492 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1493 while (*s) s++;
1494 for (i = 1; i < PL_origargc; i++) {
1495 if ((PL_origargv[i] == s + 1
43c32782 1496#ifdef OS2
c8941eeb 1497 || PL_origargv[i] == s + 2
43c32782 1498#endif
c8941eeb
JH
1499 )
1500 ||
1501 (aligned &&
1502 (PL_origargv[i] > s &&
1503 PL_origargv[i] <=
1504 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1505 )
1506 {
1507 s = PL_origargv[i];
1508 while (*s) s++;
1509 }
1510 else
1511 break;
54bfe034 1512 }
54bfe034 1513 }
3cb9023d 1514 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1515 if (s && PL_origenviron) {
43c32782
JH
1516 if ((PL_origenviron[0] == s + 1
1517#ifdef OS2
1518 || (PL_origenviron[0] == s + 9 && (s += 8))
1519#endif
1520 )
1521 ||
1522 (aligned &&
1523 (PL_origenviron[0] > s &&
1524 PL_origenviron[0] <=
1525 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1526 )
1527 {
1528#ifndef OS2
1529 s = PL_origenviron[0];
1530 while (*s) s++;
1531#endif
bd61b366 1532 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1533 /* Force copy of environment. */
1534 for (i = 1; PL_origenviron[i]; i++) {
1535 if (PL_origenviron[i] == s + 1
1536 ||
1537 (aligned &&
1538 (PL_origenviron[i] > s &&
1539 PL_origenviron[i] <=
1540 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1541 )
1542 {
1543 s = PL_origenviron[i];
1544 while (*s) s++;
1545 }
1546 else
1547 break;
54bfe034 1548 }
43c32782 1549 }
54bfe034 1550 }
2d2af554 1551 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1552 }
1553
3280af22 1554 if (PL_do_undump) {
a0d0e21e
LW
1555
1556 /* Come here if running an undumped a.out. */
1557
3280af22
NIS
1558 PL_origfilename = savepv(argv[0]);
1559 PL_do_undump = FALSE;
a0d0e21e 1560 cxstack_ix = -1; /* start label stack again */
748a9306 1561 init_ids();
b7975bdd
NC
1562 assert (!PL_tainted);
1563 TAINT;
1564 S_set_caret_X(aTHX);
1565 TAINT_NOT;
a0d0e21e
LW
1566 init_postdump_symbols(argc,argv,env);
1567 return 0;
1568 }
1569
3280af22 1570 if (PL_main_root) {
3280af22 1571 op_free(PL_main_root);
5f66b61c 1572 PL_main_root = NULL;
ff0cee69 1573 }
5f66b61c 1574 PL_main_start = NULL;
3280af22 1575 SvREFCNT_dec(PL_main_cv);
601f1833 1576 PL_main_cv = NULL;
79072805 1577
3280af22
NIS
1578 time(&PL_basetime);
1579 oldscope = PL_scopestack_ix;
599cee73 1580 PL_dowarn = G_WARN_OFF;
f86702cc 1581
14dd3ad8 1582 JMPENV_PUSH(ret);
6224f72b 1583 switch (ret) {
312caa8e 1584 case 0:
14dd3ad8 1585 parse_body(env,xsinit);
7d30b5c4
GS
1586 if (PL_checkav)
1587 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1588 ret = 0;
1589 break;
6224f72b
GS
1590 case 1:
1591 STATUS_ALL_FAILURE;
1592 /* FALL THROUGH */
1593 case 2:
1594 /* my_exit() was called */
3280af22 1595 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1596 LEAVE;
1597 FREETMPS;
3280af22 1598 PL_curstash = PL_defstash;
7d30b5c4
GS
1599 if (PL_checkav)
1600 call_list(oldscope, PL_checkav);
37038d91 1601 ret = STATUS_EXIT;
14dd3ad8 1602 break;
6224f72b 1603 case 3:
bf49b057 1604 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1605 ret = 1;
1606 break;
6224f72b 1607 }
14dd3ad8
GS
1608 JMPENV_POP;
1609 return ret;
1610}
1611
312caa8e 1612STATIC void *
14dd3ad8 1613S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1614{
27da23d5 1615 dVAR;
312caa8e 1616 int argc = PL_origargc;
8f42b153 1617 char **argv = PL_origargv;
e1ec3a88 1618 const char *scriptname = NULL;
312caa8e 1619 VOL bool dosearch = FALSE;
e1ec3a88 1620 const char *validarg = "";
312caa8e
CS
1621 register SV *sv;
1622 register char *s;
bd61b366 1623 const char *cddir = NULL;
ab019eaa 1624#ifdef USE_SITECUSTOMIZE
20ef40cf 1625 bool minus_f = FALSE;
ab019eaa 1626#endif
312caa8e 1627
3280af22 1628 sv_setpvn(PL_linestr,"",0);
396482e1 1629 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1630 SAVEFREESV(sv);
1631 init_main_stash();
54310121 1632
6224f72b
GS
1633 for (argc--,argv++; argc > 0; argc--,argv++) {
1634 if (argv[0][0] != '-' || !argv[0][1])
1635 break;
1636#ifdef DOSUID
1637 if (*validarg)
1638 validarg = " PHOOEY ";
1639 else
1640 validarg = argv[0];
ae3f3efd
PS
1641 /*
1642 * Can we rely on the kernel to start scripts with argv[1] set to
1643 * contain all #! line switches (the whole line)? (argv[0] is set to
1644 * the interpreter name, argv[2] to the script name; argv[3] and
1645 * above may contain other arguments.)
1646 */
13281fa4 1647#endif
6224f72b
GS
1648 s = argv[0]+1;
1649 reswitch:
1650 switch (*s) {
729a02f2 1651 case 'C':
1d5472a9
GS
1652#ifndef PERL_STRICT_CR
1653 case '\r':
1654#endif
6224f72b
GS
1655 case ' ':
1656 case '0':
1657 case 'F':
1658 case 'a':
1659 case 'c':
1660 case 'd':
1661 case 'D':
1662 case 'h':
1663 case 'i':
1664 case 'l':
1665 case 'M':
1666 case 'm':
1667 case 'n':
1668 case 'p':
1669 case 's':
1670 case 'u':
1671 case 'U':
1672 case 'v':
599cee73
PM
1673 case 'W':
1674 case 'X':
6224f72b 1675 case 'w':
06492da6 1676 case 'A':
97bd5664 1677 if ((s = moreswitches(s)))
6224f72b
GS
1678 goto reswitch;
1679 break;
33b78306 1680
1dbad523 1681 case 't':
22f7c9c9 1682 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1683 if( !PL_tainting ) {
1684 PL_taint_warn = TRUE;
1685 PL_tainting = TRUE;
1686 }
1687 s++;
1688 goto reswitch;
6224f72b 1689 case 'T':
22f7c9c9 1690 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1691 PL_tainting = TRUE;
317ea90d 1692 PL_taint_warn = FALSE;
6224f72b
GS
1693 s++;
1694 goto reswitch;
f86702cc 1695
bc9b29db
RH
1696 case 'E':
1697 PL_minus_E = TRUE;
1698 /* FALL THROUGH */
6224f72b 1699 case 'e':
bf4acbe4
GS
1700#ifdef MACOS_TRADITIONAL
1701 /* ignore -e for Dev:Pseudo argument */
1702 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1703 break;
bf4acbe4 1704#endif
a52eba0e 1705 forbid_setid('e', -1);
3280af22 1706 if (!PL_e_script) {
396482e1 1707 PL_e_script = newSVpvs("");
0cb96387 1708 filter_add(read_e_script, NULL);
6224f72b
GS
1709 }
1710 if (*++s)
3280af22 1711 sv_catpv(PL_e_script, s);
6224f72b 1712 else if (argv[1]) {
3280af22 1713 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1714 argc--,argv++;
1715 }
1716 else
bc9b29db 1717 Perl_croak(aTHX_ "No code specified for -%c", *s);
396482e1 1718 sv_catpvs(PL_e_script, "\n");
6224f72b 1719 break;
afe37c7d 1720
20ef40cf 1721 case 'f':
f5542d3a 1722#ifdef USE_SITECUSTOMIZE
20ef40cf 1723 minus_f = TRUE;
f5542d3a 1724#endif
20ef40cf
GA
1725 s++;
1726 goto reswitch;
1727
6224f72b 1728 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1729 forbid_setid('I', -1);
bd61b366 1730 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1731 argc--,argv++;
1732 }
6224f72b 1733 if (s && *s) {
0df16ed7 1734 STRLEN len = strlen(s);
aec46f14 1735 const char * const p = savepvn(s, len);
88fe16b2 1736 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1737 sv_catpvs(sv, "-I");
0df16ed7 1738 sv_catpvn(sv, p, len);
396482e1 1739 sv_catpvs(sv, " ");
6224f72b 1740 Safefree(p);
0df16ed7
GS
1741 }
1742 else
a67e862a 1743 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1744 break;
1745 case 'P':
a52eba0e 1746 forbid_setid('P', -1);
3280af22 1747 PL_preprocess = TRUE;
6224f72b
GS
1748 s++;
1749 goto reswitch;
1750 case 'S':
a52eba0e 1751 forbid_setid('S', -1);
6224f72b
GS
1752 dosearch = TRUE;
1753 s++;
1754 goto reswitch;
1755 case 'V':
7edfd0ef
NC
1756 {
1757 SV *opts_prog;
1758
1759 if (!PL_preambleav)
1760 PL_preambleav = newAV();
1761 av_push(PL_preambleav,
396482e1 1762 newSVpvs("use Config;"));
7edfd0ef
NC
1763 if (*++s != ':') {
1764 STRLEN opts;
1765
396482e1 1766 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1767#ifdef VMS
396482e1 1768 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1769#else
396482e1 1770 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1771#endif
7edfd0ef 1772 opts = SvCUR(opts_prog);
efcaa95b 1773
9cd7d3f2 1774 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1775# ifdef DEBUGGING
e2e4dbf1 1776 " DEBUGGING"
6224f72b 1777# endif
4f185743
NC
1778# ifdef DEBUG_LEAKING_SCALARS
1779 " DEBUG_LEAKING_SCALARS"
1780# endif
85e1fcb9 1781# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1782 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1783# endif
1784# ifdef FAKE_THREADS
e2e4dbf1 1785 " FAKE_THREADS"
85e1fcb9 1786# endif
6224f72b 1787# ifdef MULTIPLICITY
e2e4dbf1 1788 " MULTIPLICITY"
6224f72b 1789# endif
85e1fcb9 1790# ifdef MYMALLOC
e2e4dbf1 1791 " MYMALLOC"
85e1fcb9 1792# endif
3bcf5ed8
SP
1793# ifdef NO_MATHOMS
1794 " NO_MATHOMS"
1795# endif
85e1fcb9 1796# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1797 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1798# endif
1799# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1800 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1801# endif
1802# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1803 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1804# endif
1805# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1806 " PERL_IMPLICIT_SYS"
85e1fcb9 1807# endif
a724edfe
NC
1808# ifdef PERL_MAD
1809 " PERL_MAD"
1810# endif
85e1fcb9 1811# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1812 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1813# endif
1814# ifdef PERL_NEED_APPCTX
e2e4dbf1 1815 " PERL_NEED_APPCTX"
85e1fcb9
SH
1816# endif
1817# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1818 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1819# endif
1820# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1821 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1822# endif
9c0a4d5d
DM
1823# ifdef PERL_TRACK_MEMPOOL
1824 " PERL_TRACK_MEMPOOL"
1825# endif
417cd4a8
SP
1826# ifdef PERL_USE_SAFE_PUTENV
1827 " PERL_USE_SAFE_PUTENV"
1828# endif
ca0c25f6
NC
1829#ifdef PERL_USES_PL_PIDSTATUS
1830 " PERL_USES_PL_PIDSTATUS"
1831#endif
85e1fcb9 1832# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1833 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1834# endif
1835# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1836 " THREADS_HAVE_PIDS"
85e1fcb9 1837# endif
85e1fcb9 1838# ifdef USE_64_BIT_ALL
e2e4dbf1 1839 " USE_64_BIT_ALL"
ac5e8965 1840# endif
10cc9d2a 1841# ifdef USE_64_BIT_INT
e2e4dbf1 1842 " USE_64_BIT_INT"
10cc9d2a 1843# endif
85e1fcb9 1844# ifdef USE_ITHREADS
e2e4dbf1 1845 " USE_ITHREADS"
85e1fcb9
SH
1846# endif
1847# ifdef USE_LARGE_FILES
e2e4dbf1 1848 " USE_LARGE_FILES"
ac5e8965
JH
1849# endif
1850# ifdef USE_LONG_DOUBLE
e2e4dbf1 1851 " USE_LONG_DOUBLE"
ac5e8965 1852# endif
85e1fcb9 1853# ifdef USE_PERLIO
e2e4dbf1 1854 " USE_PERLIO"
53430762 1855# endif
85e1fcb9 1856# ifdef USE_REENTRANT_API
e2e4dbf1 1857 " USE_REENTRANT_API"
85e1fcb9
SH
1858# endif
1859# ifdef USE_SFIO
e2e4dbf1 1860 " USE_SFIO"
ac5e8965 1861# endif
20ef40cf 1862# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1863 " USE_SITECUSTOMIZE"
20ef40cf 1864# endif
85e1fcb9 1865# ifdef USE_SOCKS
e2e4dbf1 1866 " USE_SOCKS"
b363f7ed 1867# endif
e2e4dbf1 1868 );
efcaa95b 1869
7edfd0ef
NC
1870 while (SvCUR(opts_prog) > opts+76) {
1871 /* find last space after "options: " and before col 76
1872 */
efcaa95b 1873
7edfd0ef 1874 const char *space;
c4420975 1875 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1876 const char c = pv[opts+76];
1877 pv[opts+76] = '\0';
1878 space = strrchr(pv+opts+26, ' ');
1879 pv[opts+76] = c;
1880 if (!space) break; /* "Can't happen" */
efcaa95b 1881
7edfd0ef 1882 /* break the line before that space */
efcaa95b 1883
7edfd0ef 1884 opts = space - pv;
89529cee 1885 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1886 STR_WITH_LEN("\\n "));
7edfd0ef 1887 }
efcaa95b 1888
396482e1 1889 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1890
6224f72b 1891#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1892 if (LOCAL_PATCH_COUNT > 0) {
1893 int i;
396482e1 1894 sv_catpvs(opts_prog,
7edfd0ef
NC
1895 "\" Locally applied patches:\\n\",");
1896 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1897 if (PL_localpatches[i])
1898 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1899 0, PL_localpatches[i], 0);
1900 }
6224f72b 1901 }
6224f72b 1902#endif
7edfd0ef
NC
1903 Perl_sv_catpvf(aTHX_ opts_prog,
1904 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1905#ifdef __DATE__
1906# ifdef __TIME__
7edfd0ef
NC
1907 Perl_sv_catpvf(aTHX_ opts_prog,
1908 ",\" Compiled at %s %s\\n\"",__DATE__,
1909 __TIME__);
6224f72b 1910# else
7edfd0ef
NC
1911 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1912 __DATE__);
6224f72b
GS
1913# endif
1914#endif
396482e1 1915 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1916 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1917 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1918#ifdef __CYGWIN__
396482e1 1919 sv_catpvs(opts_prog,
7edfd0ef 1920 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1921#endif
396482e1 1922 sv_catpvs(opts_prog,
7edfd0ef
NC
1923 "print \" \\%ENV:\\n @env\\n\" if @env;"
1924 "print \" \\@INC:\\n @INC\\n\";");
1925 }
1926 else {
1927 ++s;
1928 opts_prog = Perl_newSVpvf(aTHX_
1929 "Config::config_vars(qw%c%s%c)",
1930 0, s, 0);
1931 s += strlen(s);
1932 }
1933 av_push(PL_preambleav, opts_prog);
1934 /* don't look for script or read stdin */
1935 scriptname = BIT_BUCKET;
1936 goto reswitch;
6224f72b 1937 }
6224f72b 1938 case 'x':
3280af22 1939 PL_doextract = TRUE;
6224f72b
GS
1940 s++;
1941 if (*s)
f4c556ac 1942 cddir = s;
6224f72b
GS
1943 break;
1944 case 0:
1945 break;
1946 case '-':
1947 if (!*++s || isSPACE(*s)) {
1948 argc--,argv++;
1949 goto switch_end;
1950 }
1951 /* catch use of gnu style long options */
1952 if (strEQ(s, "version")) {
dd374669 1953 s = (char *)"v";
6224f72b
GS
1954 goto reswitch;
1955 }
1956 if (strEQ(s, "help")) {
dd374669 1957 s = (char *)"h";
6224f72b
GS
1958 goto reswitch;
1959 }
1960 s--;
1961 /* FALL THROUGH */
1962 default:
cea2e8a9 1963 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1964 }
1965 }
6224f72b 1966 switch_end:
54310121 1967
f675dbe5
CB
1968 if (
1969#ifndef SECURE_INTERNAL_GETENV
1970 !PL_tainting &&
1971#endif
cf756827 1972 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1973 {
e1ec3a88 1974 const char *popt = s;
74288ac8
GS
1975 while (isSPACE(*s))
1976 s++;
317ea90d 1977 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1978 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1979 PL_tainting = TRUE;
317ea90d
MS
1980 PL_taint_warn = FALSE;
1981 }
74288ac8 1982 else {
bd61b366 1983 char *popt_copy = NULL;
74288ac8 1984 while (s && *s) {
4ea8f8fb 1985 char *d;
74288ac8
GS
1986 while (isSPACE(*s))
1987 s++;
1988 if (*s == '-') {
1989 s++;
1990 if (isSPACE(*s))
1991 continue;
1992 }
4ea8f8fb 1993 d = s;
74288ac8
GS
1994 if (!*s)
1995 break;
e4af53b0 1996 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 1997 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1998 while (++s && *s) {
1999 if (isSPACE(*s)) {
cf756827
GS
2000 if (!popt_copy) {
2001 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
2002 s = popt_copy + (s - popt);
2003 d = popt_copy + (d - popt);
2004 }
4ea8f8fb
MS
2005 *s++ = '\0';
2006 break;
2007 }
2008 }
1c4db469 2009 if (*d == 't') {
317ea90d
MS
2010 if( !PL_tainting ) {
2011 PL_taint_warn = TRUE;
2012 PL_tainting = TRUE;
2013 }
1c4db469 2014 } else {
97bd5664 2015 moreswitches(d);
1c4db469 2016 }
6224f72b 2017 }
6224f72b
GS
2018 }
2019 }
a0d0e21e 2020
20ef40cf
GA
2021#ifdef USE_SITECUSTOMIZE
2022 if (!minus_f) {
2023 if (!PL_preambleav)
2024 PL_preambleav = newAV();
2025 av_unshift(PL_preambleav, 1);
2026 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
2027 }
2028#endif
2029
317ea90d
MS
2030 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
2031 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
2032 }
2033
6224f72b
GS
2034 if (!scriptname)
2035 scriptname = argv[0];
3280af22 2036 if (PL_e_script) {
6224f72b
GS
2037 argc++,argv--;
2038 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2039 }
bd61b366 2040 else if (scriptname == NULL) {
6224f72b
GS
2041#ifdef MSDOS
2042 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2043 moreswitches("h");
6224f72b
GS
2044#endif
2045 scriptname = "-";
2046 }
2047
b7975bdd
NC
2048 /* Set $^X early so that it can be used for relocatable paths in @INC */
2049 assert (!PL_tainted);
2050 TAINT;
2051 S_set_caret_X(aTHX);
2052 TAINT_NOT;
6224f72b
GS
2053 init_perllib();
2054
a52eba0e
NC
2055 {
2056 int suidscript;
2057 const int fdscript
2058 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2059
a52eba0e 2060 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2061
64ca3a65 2062#ifndef PERL_MICRO
a52eba0e
NC
2063# if defined(SIGCHLD) || defined(SIGCLD)
2064 {
2065# ifndef SIGCHLD
2066# define SIGCHLD SIGCLD
2067# endif
2068 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2069 if (sigstate == (Sighandler_t) SIG_IGN) {
2070 if (ckWARN(WARN_SIGNAL))
2071 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2072 "Can't ignore signal CHLD, forcing to default");
2073 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2074 }
0b5b802d 2075 }
a52eba0e 2076# endif
64ca3a65 2077#endif
0b5b802d 2078
a52eba0e 2079 if (PL_doextract
bf4acbe4 2080#ifdef MACOS_TRADITIONAL
a52eba0e 2081 || gMacPerl_AlwaysExtract
bf4acbe4 2082#endif
a52eba0e 2083 ) {
faef540c
NC
2084
2085 /* This will croak if suidscript is >= 0, as -x cannot be used with
2086 setuid scripts. */
2087 forbid_setid('x', suidscript);
2088 /* Hence you can't get here if suidscript >= 0 */
2089
2090 find_beginning();
a52eba0e
NC
2091 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2092 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2093 }
f4c556ac 2094 }
6224f72b 2095
561b68a9 2096 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2097 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2098 CvUNIQUE_on(PL_compcv);
2099
dd2155a4 2100 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2101
0c4f7ff0 2102 boot_core_PerlIO();
6224f72b 2103 boot_core_UNIVERSAL();
09bef843 2104 boot_core_xsutils();
6224f72b
GS
2105
2106 if (xsinit)
acfe0abc 2107 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2108#ifndef PERL_MICRO
d0d72822 2109#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2110 init_os_extras();
6224f72b 2111#endif
64ca3a65 2112#endif
6224f72b 2113
29209bc5 2114#ifdef USE_SOCKS
1b9c9cf5
DH
2115# ifdef HAS_SOCKS5_INIT
2116 socks5_init(argv[0]);
2117# else
29209bc5 2118 SOCKSinit(argv[0]);
1b9c9cf5 2119# endif
ac27b0f5 2120#endif
29209bc5 2121
6224f72b
GS
2122 init_predump_symbols();
2123 /* init_postdump_symbols not currently designed to be called */
2124 /* more than once (ENV isn't cleared first, for example) */
2125 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2126 if (!PL_do_undump)
6224f72b
GS
2127 init_postdump_symbols(argc,argv,env);
2128
27da23d5
JH
2129 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2130 * or explicitly in some platforms.
085a54d9 2131 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2132 * look like the user wants to use UTF-8. */
a0fd4948 2133#if defined(__SYMBIAN32__)
27da23d5
JH
2134 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2135#endif
06e66572
JH
2136 if (PL_unicode) {
2137 /* Requires init_predump_symbols(). */
a05d7ebb 2138 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2139 IO* io;
2140 PerlIO* fp;
2141 SV* sv;
2142
a05d7ebb 2143 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2144 * and the default open disciplines. */
a05d7ebb
JH
2145 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2146 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2147 (fp = IoIFP(io)))
2148 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2149 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2150 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2151 (fp = IoOFP(io)))
2152 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2153 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2154 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2155 (fp = IoOFP(io)))
2156 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2157 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2158 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2159 SVt_PV)))) {
a05d7ebb
JH
2160 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2161 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2162 if (in) {
2163 if (out)
2164 sv_setpvn(sv, ":utf8\0:utf8", 11);
2165 else
2166 sv_setpvn(sv, ":utf8\0", 6);
2167 }
2168 else if (out)
2169 sv_setpvn(sv, "\0:utf8", 6);
2170 SvSETMAGIC(sv);
2171 }
b310b053
JH
2172 }
2173 }
2174
4ffa73a3
JH
2175 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2176 if (strEQ(s, "unsafe"))
2177 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2178 else if (strEQ(s, "safe"))
2179 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2180 else
2181 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2182 }
2183
81d86705
NC
2184#ifdef PERL_MAD
2185 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2186 PL_madskills = 1;
2187 PL_minus_c = 1;
2188 if (!s || !s[0])
2189 PL_xmlfp = PerlIO_stdout();
2190 else {
2191 PL_xmlfp = PerlIO_open(s, "w");
2192 if (!PL_xmlfp)
2193 Perl_croak(aTHX_ "Can't open %s", s);
2194 }
2195 my_setenv("PERL_XMLDUMP", Nullch); /* hide from subprocs */
2196 }
2197 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2198 PL_madskills = atoi(s);
2199 my_setenv("PERL_MADSKILLS", Nullch); /* hide from subprocs */
2200 }
2201#endif
2202
6224f72b
GS
2203 init_lexer();
2204
2205 /* now parse the script */
2206
93189314 2207 SETERRNO(0,SS_NORMAL);
3280af22 2208 PL_error_count = 0;
bf4acbe4
GS
2209#ifdef MACOS_TRADITIONAL
2210 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2211 if (PL_minus_c)
2212 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2213 else {
2214 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2215 MacPerl_MPWFileName(PL_origfilename));
2216 }
2217 }
2218#else
3280af22
NIS
2219 if (yyparse() || PL_error_count) {
2220 if (PL_minus_c)
cea2e8a9 2221 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2222 else {
cea2e8a9 2223 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2224 PL_origfilename);
6224f72b
GS
2225 }
2226 }
bf4acbe4 2227#endif
57843af0 2228 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2229 PL_curstash = PL_defstash;
2230 PL_preprocess = FALSE;
2231 if (PL_e_script) {
2232 SvREFCNT_dec(PL_e_script);
a0714e2c 2233 PL_e_script = NULL;
6224f72b
GS
2234 }
2235
3280af22 2236 if (PL_do_undump)
6224f72b
GS
2237 my_unexec();
2238
57843af0
GS
2239 if (isWARN_ONCE) {
2240 SAVECOPFILE(PL_curcop);
2241 SAVECOPLINE(PL_curcop);
3280af22 2242 gv_check(PL_defstash);
57843af0 2243 }
6224f72b
GS
2244
2245 LEAVE;
2246 FREETMPS;
2247
2248#ifdef MYMALLOC
2249 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2250 dump_mstats("after compilation:");
2251#endif
2252
2253 ENTER;
3280af22 2254 PL_restartop = 0;
312caa8e 2255 return NULL;
6224f72b
GS
2256}
2257
954c1994
GS
2258/*
2259=for apidoc perl_run
2260
2261Tells a Perl interpreter to run. See L<perlembed>.
2262
2263=cut
2264*/
2265
6224f72b 2266int
0cb96387 2267perl_run(pTHXx)
6224f72b 2268{
97aff369 2269 dVAR;
6224f72b 2270 I32 oldscope;
14dd3ad8 2271 int ret = 0;
db36c5a1 2272 dJMPENV;
6224f72b 2273
96a5add6 2274 PERL_UNUSED_CONTEXT;
9d4ba2ae 2275
3280af22 2276 oldscope = PL_scopestack_ix;
96e176bf
CL
2277#ifdef VMS
2278 VMSISH_HUSHED = 0;
2279#endif
6224f72b 2280
14dd3ad8 2281 JMPENV_PUSH(ret);
6224f72b
GS
2282 switch (ret) {
2283 case 1:
2284 cxstack_ix = -1; /* start context stack again */
312caa8e 2285 goto redo_body;
14dd3ad8 2286 case 0: /* normal completion */
14dd3ad8
GS
2287 redo_body:
2288 run_body(oldscope);
14dd3ad8
GS
2289 /* FALL THROUGH */
2290 case 2: /* my_exit() */
3280af22 2291 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2292 LEAVE;
2293 FREETMPS;
3280af22 2294 PL_curstash = PL_defstash;
3a1ee7e8 2295 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2296 PL_endav && !PL_minus_c)
2297 call_list(oldscope, PL_endav);
6224f72b
GS
2298#ifdef MYMALLOC
2299 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2300 dump_mstats("after execution: ");
2301#endif
37038d91 2302 ret = STATUS_EXIT;
14dd3ad8 2303 break;
6224f72b 2304 case 3:
312caa8e
CS
2305 if (PL_restartop) {
2306 POPSTACK_TO(PL_mainstack);
2307 goto redo_body;
6224f72b 2308 }
bf49b057 2309 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2310 FREETMPS;
14dd3ad8
GS
2311 ret = 1;
2312 break;
6224f72b
GS
2313 }
2314
14dd3ad8
GS
2315 JMPENV_POP;
2316 return ret;
312caa8e
CS
2317}
2318
14dd3ad8 2319
dd374669 2320STATIC void
14dd3ad8
GS
2321S_run_body(pTHX_ I32 oldscope)
2322{
97aff369 2323 dVAR;
6224f72b 2324 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2325 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2326
3280af22 2327 if (!PL_restartop) {
81d86705
NC
2328#ifdef PERL_MAD
2329 if (PL_xmlfp) {
2330 xmldump_all();
2331 exit(0); /* less likely to core dump than my_exit(0) */
2332 }
2333#endif
6224f72b 2334 DEBUG_x(dump_all());
cf2782cd 2335#ifdef DEBUGGING
ecae49c0
NC
2336 if (!DEBUG_q_TEST)
2337 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2338#endif
b900a521
JH
2339 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2340 PTR2UV(thr)));
6224f72b 2341
3280af22 2342 if (PL_minus_c) {
bf4acbe4 2343#ifdef MACOS_TRADITIONAL
e69a2255
JH
2344 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2345 (gMacPerl_ErrorFormat ? "# " : ""),
2346 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2347#else
bf49b057 2348 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2349#endif
6224f72b
GS
2350 my_exit(0);
2351 }
3280af22 2352 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2353 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2354 if (PL_initav)
2355 call_list(oldscope, PL_initav);
6224f72b
GS
2356 }
2357
2358 /* do it */
2359
3280af22 2360 if (PL_restartop) {
533c011a 2361 PL_op = PL_restartop;
3280af22 2362 PL_restartop = 0;
cea2e8a9 2363 CALLRUNOPS(aTHX);
6224f72b 2364 }
3280af22
NIS
2365 else if (PL_main_start) {
2366 CvDEPTH(PL_main_cv) = 1;
533c011a 2367 PL_op = PL_main_start;
cea2e8a9 2368 CALLRUNOPS(aTHX);
6224f72b 2369 }
f6b3007c
JH
2370 my_exit(0);
2371 /* NOTREACHED */
6224f72b
GS
2372}
2373
954c1994 2374/*
ccfc67b7
JH
2375=head1 SV Manipulation Functions
2376
954c1994
GS
2377=for apidoc p||get_sv
2378
2379Returns the SV of the specified Perl scalar. If C<create> is set and the
2380Perl variable does not exist then it will be created. If C<create> is not
2381set and the variable does not exist then NULL is returned.
2382
2383=cut
2384*/
2385
6224f72b 2386SV*
864dbfa3 2387Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2388{
2389 GV *gv;
6224f72b
GS
2390 gv = gv_fetchpv(name, create, SVt_PV);
2391 if (gv)
2392 return GvSV(gv);
a0714e2c 2393 return NULL;
6224f72b
GS
2394}
2395
954c1994 2396/*
ccfc67b7
JH
2397=head1 Array Manipulation Functions
2398
954c1994
GS
2399=for apidoc p||get_av
2400
2401Returns the AV of the specified Perl array. If C<create> is set and the
2402Perl variable does not exist then it will be created. If C<create> is not
2403set and the variable does not exist then NULL is returned.
2404
2405=cut
2406*/
2407
6224f72b 2408AV*
864dbfa3 2409Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2410{
c4420975 2411 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2412 if (create)
2413 return GvAVn(gv);
2414 if (gv)
2415 return GvAV(gv);
7d49f689 2416 return NULL;
6224f72b
GS
2417}
2418
954c1994 2419/*
ccfc67b7
JH
2420=head1 Hash Manipulation Functions
2421
954c1994
GS
2422=for apidoc p||get_hv
2423
2424Returns the HV of the specified Perl hash. If C<create> is set and the
2425Perl variable does not exist then it will be created. If C<create> is not
2426set and the variable does not exist then NULL is returned.
2427
2428=cut
2429*/
2430
6224f72b 2431HV*
864dbfa3 2432Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2433{
890ce7af 2434 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2435 if (create)
2436 return GvHVn(gv);
2437 if (gv)
2438 return GvHV(gv);
5c284bb0 2439 return NULL;
a0d0e21e
LW
2440}
2441
954c1994 2442/*
ccfc67b7
JH
2443=head1 CV Manipulation Functions
2444
954c1994
GS
2445=for apidoc p||get_cv
2446
2447Returns the CV of the specified Perl subroutine. If C<create> is set and
2448the Perl subroutine does not exist then it will be declared (which has the
2449same effect as saying C<sub name;>). If C<create> is not set and the
2450subroutine does not exist then NULL is returned.
2451
2452=cut
2453*/
2454
a0d0e21e 2455CV*
864dbfa3 2456Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2457{
c4420975 2458 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2459 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2460 /* XXX this is probably not what they think they're getting.
2461 * It has the same effect as "sub name;", i.e. just a forward
2462 * declaration! */
8ebc5c01 2463 if (create && !GvCVu(gv))
774d564b 2464 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2465 newSVOP(OP_CONST, 0, newSVpv(name,0)),
5f66b61c 2466 NULL, NULL);
a0d0e21e 2467 if (gv)
8ebc5c01 2468 return GvCVu(gv);
601f1833 2469 return NULL;
a0d0e21e
LW
2470}
2471
79072805
LW
2472/* Be sure to refetch the stack pointer after calling these routines. */
2473
954c1994 2474/*
ccfc67b7
JH
2475
2476=head1 Callback Functions
2477
954c1994
GS
2478=for apidoc p||call_argv
2479
2480Performs a callback to the specified Perl sub. See L<perlcall>.
2481
2482=cut
2483*/
2484
a0d0e21e 2485I32
8f42b153 2486Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2487
8ac85365
NIS
2488 /* See G_* flags in cop.h */
2489 /* null terminated arg list */
8990e307 2490{
97aff369 2491 dVAR;
a0d0e21e 2492 dSP;
8990e307 2493
924508f0 2494 PUSHMARK(SP);
a0d0e21e 2495 if (argv) {
8990e307 2496 while (*argv) {
a0d0e21e 2497 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2498 argv++;
2499 }
a0d0e21e 2500 PUTBACK;
8990e307 2501 }
864dbfa3 2502 return call_pv(sub_name, flags);
8990e307
LW
2503}
2504
954c1994
GS
2505/*
2506=for apidoc p||call_pv
2507
2508Performs a callback to the specified Perl sub. See L<perlcall>.
2509
2510=cut
2511*/
2512
a0d0e21e 2513I32
864dbfa3 2514Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2515 /* name of the subroutine */
2516 /* See G_* flags in cop.h */
a0d0e21e 2517{
864dbfa3 2518 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2519}
2520
954c1994
GS
2521/*
2522=for apidoc p||call_method
2523
2524Performs a callback to the specified Perl method. The blessed object must
2525be on the stack. See L<perlcall>.
2526
2527=cut
2528*/
2529
a0d0e21e 2530I32
864dbfa3 2531Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2532 /* name of the subroutine */
2533 /* See G_* flags in cop.h */
a0d0e21e 2534{
968b3946 2535 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2536}
2537
2538/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2539/*
2540=for apidoc p||call_sv
2541
2542Performs a callback to the Perl sub whose name is in the SV. See
2543L<perlcall>.
2544
2545=cut
2546*/
2547
a0d0e21e 2548I32
864dbfa3 2549Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2550 /* See G_* flags in cop.h */
a0d0e21e 2551{
27da23d5 2552 dVAR; dSP;
a0d0e21e 2553 LOGOP myop; /* fake syntax tree node */
968b3946 2554 UNOP method_op;
aa689395 2555 I32 oldmark;
13689cfe 2556 volatile I32 retval = 0;
a0d0e21e 2557 I32 oldscope;
54310121 2558 bool oldcatch = CATCH_GET;
6224f72b 2559 int ret;
c4420975 2560 OP* const oldop = PL_op;
db36c5a1 2561 dJMPENV;
1e422769 2562
a0d0e21e
LW
2563 if (flags & G_DISCARD) {
2564 ENTER;
2565 SAVETMPS;
2566 }
2567
aa689395 2568 Zero(&myop, 1, LOGOP);
5f66b61c 2569 myop.op_next = NULL;
f51d4af5 2570 if (!(flags & G_NOARGS))
aa689395 2571 myop.op_flags |= OPf_STACKED;
54310121
PP
2572 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2573 (flags & G_ARRAY) ? OPf_WANT_LIST :
2574 OPf_WANT_SCALAR);
462e5cf6 2575 SAVEOP();
533c011a 2576 PL_op = (OP*)&myop;
aa689395 2577
3280af22
NIS
2578 EXTEND(PL_stack_sp, 1);
2579 *++PL_stack_sp = sv;
aa689395 2580 oldmark = TOPMARK;
3280af22 2581 oldscope = PL_scopestack_ix;
a0d0e21e 2582
3280af22 2583 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2584 /* Handle first BEGIN of -d. */
3280af22 2585 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2586 /* Try harder, since this may have been a sighandler, thus
2587 * curstash may be meaningless. */
3280af22 2588 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2589 && !(flags & G_NODEBUG))
533c011a 2590 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2591
968b3946
GS
2592 if (flags & G_METHOD) {
2593 Zero(&method_op, 1, UNOP);
2594 method_op.op_next = PL_op;
2595 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2596 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2597 PL_op = (OP*)&method_op;
968b3946
GS
2598 }
2599
312caa8e 2600 if (!(flags & G_EVAL)) {
0cdb2077 2601 CATCH_SET(TRUE);
14dd3ad8 2602 call_body((OP*)&myop, FALSE);
312caa8e 2603 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2604 CATCH_SET(oldcatch);
312caa8e
CS
2605 }
2606 else {
d78bda3d 2607 myop.op_other = (OP*)&myop;
3280af22 2608 PL_markstack_ptr--;
edb2152a 2609 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2610 PL_markstack_ptr++;
a0d0e21e 2611
14dd3ad8 2612 JMPENV_PUSH(ret);
edb2152a 2613
6224f72b
GS
2614 switch (ret) {
2615 case 0:
14dd3ad8
GS
2616 redo_body:
2617 call_body((OP*)&myop, FALSE);
312caa8e
CS
2618 retval = PL_stack_sp - (PL_stack_base + oldmark);
2619 if (!(flags & G_KEEPERR))
c69006e4 2620 sv_setpvn(ERRSV,"",0);
a0d0e21e 2621 break;
6224f72b 2622 case 1:
f86702cc 2623 STATUS_ALL_FAILURE;
a0d0e21e 2624 /* FALL THROUGH */
6224f72b 2625 case 2:
a0d0e21e 2626 /* my_exit() was called */
3280af22 2627 PL_curstash = PL_defstash;
a0d0e21e 2628 FREETMPS;
14dd3ad8 2629 JMPENV_POP;
cc3604b1 2630 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2631 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2632 my_exit_jump();
a0d0e21e 2633 /* NOTREACHED */
6224f72b 2634 case 3:
3280af22 2635 if (PL_restartop) {
533c011a 2636 PL_op = PL_restartop;
3280af22 2637 PL_restartop = 0;
312caa8e 2638 goto redo_body;
a0d0e21e 2639 }
3280af22 2640 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2641 if (flags & G_ARRAY)
2642 retval = 0;
2643 else {
2644 retval = 1;
3280af22 2645 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2646 }
312caa8e 2647 break;
a0d0e21e 2648 }
a0d0e21e 2649
edb2152a
NC
2650 if (PL_scopestack_ix > oldscope)
2651 delete_eval_scope();
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;
5f66b61c 2716 myop.op_next = NULL;
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;
e49e380e 3014 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3015 return s;
79072805 3016 case 'a':
3280af22 3017 PL_minus_a = TRUE;
79072805
LW
3018 s++;
3019 return s;
3020 case 'c':
3280af22 3021 PL_minus_c = TRUE;
79072805
LW
3022 s++;
3023 return s;
3024 case 'd':
97bd5664 3025 forbid_setid('d', -1);
4633a7c4 3026 s++;
2cbb2ee1
RGS
3027
3028 /* -dt indicates to the debugger that threads will be used */
3029 if (*s == 't' && !isALNUM(s[1])) {
3030 ++s;
3031 my_setenv("PERL5DB_THREADED", "1");
3032 }
3033
70c94a19
RR
3034 /* The following permits -d:Mod to accepts arguments following an =
3035 in the fashion that -MSome::Mod does. */
3036 if (*s == ':' || *s == '=') {
06b5626a 3037 const char *start;
396482e1 3038 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3039 start = ++s;
3040 /* We now allow -d:Module=Foo,Bar */
3041 while(isALNUM(*s) || *s==':') ++s;
3042 if (*s != '=')
3043 sv_catpv(sv, start);
3044 else {
3045 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3046 /* Don't use NUL as q// delimiter here, this string goes in the
3047 * environment. */
3048 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3049 }
4633a7c4 3050 s += strlen(s);
184f32ec 3051 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3052 }
ed094faf 3053 if (!PL_perldb) {
3280af22 3054 PL_perldb = PERLDB_ALL;
a0d0e21e 3055 init_debugger();
ed094faf 3056 }
79072805
LW
3057 return s;
3058 case 'D':
0453d815 3059 {
79072805 3060#ifdef DEBUGGING
97bd5664 3061 forbid_setid('D', -1);
b4ab917c 3062 s++;
dd374669 3063 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3064#else /* !DEBUGGING */
0453d815 3065 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3066 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3067 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3068 for (s++; isALNUM(*s); s++) ;
79072805 3069#endif
79072805 3070 return s;
0453d815 3071 }
4633a7c4 3072 case 'h':
ac27b0f5 3073 usage(PL_origargv[0]);
7ca617d0 3074 my_exit(0);
79072805 3075 case 'i':
43c5f42d 3076 Safefree(PL_inplace);
c030f24b
GH
3077#if defined(__CYGWIN__) /* do backup extension automagically */
3078 if (*(s+1) == '\0') {
c86a4f2e 3079 PL_inplace = savepvs(".bak");
c030f24b
GH
3080 return s+1;
3081 }
3082#endif /* __CYGWIN__ */
5ef5d758 3083 {
d4c19fe8 3084 const char * const start = ++s;
5ef5d758
NC
3085 while (*s && !isSPACE(*s))
3086 ++s;
3087
3088 PL_inplace = savepvn(start, s - start);
3089 }
7b8d334a 3090 if (*s) {
5ef5d758 3091 ++s;
7b8d334a 3092 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3093 s++;
7b8d334a 3094 }
fb73857a 3095 return s;
4e49a025 3096 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3097 forbid_setid('I', -1);
fb73857a
PP
3098 ++s;
3099 while (*s && isSPACE(*s))
3100 ++s;
3101 if (*s) {
774d564b 3102 char *e, *p;
0df16ed7
GS
3103 p = s;
3104 /* ignore trailing spaces (possibly followed by other switches) */
3105 do {
3106 for (e = p; *e && !isSPACE(*e); e++) ;
3107 p = e;
3108 while (isSPACE(*p))
3109 p++;
3110 } while (*p && *p != '-');
3111 e = savepvn(s, e-s);
88fe16b2 3112 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3113 Safefree(e);
3114 s = p;
3115 if (*s == '-')
3116 s++;
79072805
LW
3117 }
3118 else
a67e862a 3119 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3120 return s;
79072805 3121 case 'l':
3280af22 3122 PL_minus_l = TRUE;
79072805 3123 s++;
7889fe52
NIS
3124 if (PL_ors_sv) {
3125 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3126 PL_ors_sv = NULL;
7889fe52 3127 }
79072805 3128 if (isDIGIT(*s)) {
53305cf1 3129 I32 flags = 0;
a3b680e6 3130 STRLEN numlen;
396482e1 3131 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3132 numlen = 3 + (*s == '0');
3133 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3134 s += numlen;
3135 }
3136 else {
8bfdd7d9 3137 if (RsPARA(PL_rs)) {
396482e1 3138 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3139 }
3140 else {
8bfdd7d9 3141 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3142 }
79072805
LW
3143 }
3144 return s;
06492da6 3145 case 'A':
97bd5664 3146 forbid_setid('A', -1);
930366bd
RGS
3147 if (!PL_preambleav)
3148 PL_preambleav = newAV();
aefc56c5
SF
3149 s++;
3150 {
44f8325f 3151 char * const start = s;
396482e1 3152 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3153 while(isALNUM(*s) || *s == ':') ++s;
3154 if (s != start) {
396482e1 3155 sv_catpvs(sv, "::");
aefc56c5
SF
3156 sv_catpvn(sv, start, s-start);
3157 }
3158 if (*s == '=') {
0c5a913d 3159 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3160 s+=strlen(s);
3161 }
3162 else if (*s != '\0') {
551405c4 3163 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3164 }
06492da6 3165 av_push(PL_preambleav, sv);
aefc56c5 3166 return s;
06492da6 3167 }
1a30305b 3168 case 'M':
97bd5664 3169 forbid_setid('M', -1); /* XXX ? */
1a30305b
PP
3170 /* FALL THROUGH */
3171 case 'm':
97bd5664 3172 forbid_setid('m', -1); /* XXX ? */
1a30305b 3173 if (*++s) {
a5f75d66 3174 char *start;
11343788 3175 SV *sv;
e1ec3a88 3176 const char *use = "use ";
a5f75d66 3177 /* -M-foo == 'no foo' */
d0043bd1
NC
3178 /* Leading space on " no " is deliberate, to make both
3179 possibilities the same length. */
3180 if (*s == '-') { use = " no "; ++s; }
3181 sv = newSVpvn(use,4);
a5f75d66 3182 start = s;
1a30305b 3183 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3184 while(isALNUM(*s) || *s==':') ++s;
3185 if (*s != '=') {
11343788 3186 sv_catpv(sv, start);
c07a80fd
PP
3187 if (*(start-1) == 'm') {
3188 if (*s != '\0')
cea2e8a9 3189 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3190 sv_catpvs( sv, " ()");
c07a80fd
PP
3191 }
3192 } else {
6df41af2 3193 if (s == start)
be98fb35
GS
3194 Perl_croak(aTHX_ "Module name required with -%c option",
3195 s[-1]);
11343788 3196 sv_catpvn(sv, start, s-start);
396482e1
GA
3197 sv_catpvs(sv, " split(/,/,q");
3198 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3199 sv_catpv(sv, ++s);
396482e1 3200 sv_catpvs(sv, "\0)");
c07a80fd 3201 }
1a30305b 3202 s += strlen(s);
5c831c24 3203 if (!PL_preambleav)
3280af22
NIS
3204 PL_preambleav = newAV();
3205 av_push(PL_preambleav, sv);
1a30305b
PP
3206 }
3207 else
9e81e6a1 3208 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3209 return s;
79072805 3210 case 'n':
3280af22 3211 PL_minus_n = TRUE;
79072805
LW
3212 s++;
3213 return s;
3214 case 'p':
3280af22 3215 PL_minus_p = TRUE;
79072805
LW
3216 s++;
3217 return s;
3218 case 's':
97bd5664 3219 forbid_setid('s', -1);
3280af22 3220 PL_doswitches = TRUE;
79072805
LW
3221 s++;
3222 return s;
6537fe72
MS
3223 case 't':
3224 if (!PL_tainting)
22f7c9c9 3225 TOO_LATE_FOR('t');
6537fe72
MS
3226 s++;
3227 return s;
463ee0b2 3228 case 'T':
3280af22 3229 if (!PL_tainting)
22f7c9c9 3230 TOO_LATE_FOR('T');
463ee0b2
LW
3231 s++;
3232 return s;
79072805 3233 case 'u':
bf4acbe4
GS
3234#ifdef MACOS_TRADITIONAL
3235 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3236#endif
3280af22 3237 PL_do_undump = TRUE;
79072805
LW
3238 s++;
3239 return s;
3240 case 'U':
3280af22 3241 PL_unsafe = TRUE;
79072805
LW
3242 s++;
3243 return s;
3244 case 'v':
d7aa5382 3245 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3246 upg_version(PL_patchlevel);
8e9464f1 3247#if !defined(DGUX)
b0e47665 3248 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3249 Perl_form(aTHX_ "\nThis is perl, %"SVf
3250#ifdef PERL_PATCHNUM
3251 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3252#endif
3253 " built for %s",
d7aa5382
JP
3254 vstringify(PL_patchlevel),
3255 ARCHNAME));
8e9464f1
JH
3256#else /* DGUX */
3257/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3258 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3259 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3260 vstringify(PL_patchlevel)));
8e9464f1
JH
3261 PerlIO_printf(PerlIO_stdout(),
3262 Perl_form(aTHX_ " built under %s at %s %s\n",
3263 OSNAME, __DATE__, __TIME__));
3264 PerlIO_printf(PerlIO_stdout(),
3265 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3266 OSVERS));
8e9464f1
JH
3267#endif /* !DGUX */
3268
fb73857a
PP
3269#if defined(LOCAL_PATCH_COUNT)
3270 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3271 PerlIO_printf(PerlIO_stdout(),
3272 "\n(with %d registered patch%s, "
3273 "see perl -V for more detail)",
3274 (int)LOCAL_PATCH_COUNT,
3275 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3276#endif
1a30305b 3277
b0e47665 3278 PerlIO_printf(PerlIO_stdout(),
3246d7a3 3279 "\n\nCopyright 1987-2006, Larry Wall\n");
eae9c151
JH
3280#ifdef MACOS_TRADITIONAL
3281 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3282 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3283 "maintained by Chris Nandor\n");
eae9c151 3284#endif
79072805 3285#ifdef MSDOS
b0e47665
GS
3286 PerlIO_printf(PerlIO_stdout(),
3287 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3288#endif
3289#ifdef DJGPP
b0e47665
GS
3290 PerlIO_printf(PerlIO_stdout(),
3291 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3292 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3293#endif
79072805 3294#ifdef OS2
b0e47665
GS
3295 PerlIO_printf(PerlIO_stdout(),
3296 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3297 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3298#endif
79072805 3299#ifdef atarist
b0e47665
GS
3300 PerlIO_printf(PerlIO_stdout(),
3301 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3302#endif
a3f9223b 3303#ifdef __BEOS__
b0e47665
GS
3304 PerlIO_printf(PerlIO_stdout(),
3305 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3306#endif
1d84e8df 3307#ifdef MPE
b0e47665 3308 PerlIO_printf(PerlIO_stdout(),
e583a879 3309 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3310#endif
9d116dd7 3311#ifdef OEMVS
b0e47665
GS
3312 PerlIO_printf(PerlIO_stdout(),
3313 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3314#endif
495c5fdc 3315#ifdef __VOS__
b0e47665 3316 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3317 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3318#endif
092bebab 3319#ifdef __OPEN_VM
b0e47665
GS
3320 PerlIO_printf(PerlIO_stdout(),
3321 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3322#endif
a1a0e61e 3323#ifdef POSIX_BC
b0e47665
GS
3324 PerlIO_printf(PerlIO_stdout(),
3325 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3326#endif
61ae2fbf 3327#ifdef __MINT__
b0e47665
GS
3328 PerlIO_printf(PerlIO_stdout(),
3329 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3330#endif
f83d2536 3331#ifdef EPOC
b0e47665 3332 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3333 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3334#endif
e1caacb4 3335#ifdef UNDER_CE
b475b3e6
JH
3336 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3337 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3338 wce_hitreturn();
3339#endif
a0fd4948 3340#ifdef __SYMBIAN32__
27da23d5
JH
3341 PerlIO_printf(PerlIO_stdout(),
3342 "Symbian port by Nokia, 2004-2005\n");
3343#endif
baed7233
DL
3344#ifdef BINARY_BUILD_NOTICE
3345 BINARY_BUILD_NOTICE;
3346#endif
b0e47665
GS
3347 PerlIO_printf(PerlIO_stdout(),
3348 "\n\
79072805 3349Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3350GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3351Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3352this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3353Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3354 my_exit(0);
79072805 3355 case 'w':
599cee73 3356 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3357 PL_dowarn |= G_WARN_ON;
599cee73
PM
3358 s++;
3359 return s;
3360 case 'W':
ac27b0f5 3361 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3362 if (!specialWARN(PL_compiling.cop_warnings))
3363 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3364 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3365 s++;
3366 return s;
3367 case 'X':
ac27b0f5 3368 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3369 if (!specialWARN(PL_compiling.cop_warnings))
3370 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3371 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3372 s++;
3373 return s;
a0d0e21e 3374 case '*':
79072805
LW
3375 case ' ':
3376 if (s[1] == '-') /* Additional switches on #! line. */
3377 return s+2;
3378 break;
a0d0e21e 3379 case '-':
79072805 3380 case 0:
51882d45 3381#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3382 case '\r':
3383#endif
79072805
LW
3384 case '\n':
3385 case '\t':
3386 break;
aa689395
PP
3387#ifdef ALTERNATE_SHEBANG
3388 case 'S': /* OS/2 needs -S on "extproc" line. */
3389 break;
3390#endif
a0d0e21e 3391 case 'P':
3280af22 3392 if (PL_preprocess)
a0d0e21e
LW
3393 return s+1;
3394 /* FALL THROUGH */
79072805 3395 default:
cea2e8a9 3396 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3397 }
bd61b366 3398 return NULL;
79072805
LW
3399}
3400
3401/* compliments of Tom Christiansen */
3402
3403/* unexec() can be found in the Gnu emacs distribution */
ee580363 3404/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3405
3406void
864dbfa3 3407Perl_my_unexec(pTHX)
79072805 3408{
b37c2d43 3409 PERL_UNUSED_CONTEXT;
79072805 3410#ifdef UNEXEC
b37c2d43
AL
3411 SV * prog = newSVpv(BIN_EXP, 0);
3412 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3413 int status = 1;
79072805
LW
3414 extern int etext;
3415
396482e1 3416 sv_catpvs(prog, "/perl");
396482e1 3417 sv_catpvs(file, ".perldump");
79072805 3418
ee580363
GS
3419 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3420 /* unexec prints msg to stderr in case of failure */
6ad3d225 3421 PerlProc_exit(status);
79072805 3422#else
a5f75d66
AD
3423# ifdef VMS
3424# include <lib$routines.h>
3425 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3426# elif defined(WIN32) || defined(__CYGWIN__)
3427 Perl_croak(aTHX_ "dump is not supported");
aa689395 3428# else
79072805 3429 ABORT(); /* for use with undump */
aa689395 3430# endif
a5f75d66 3431#endif
79072805
LW
3432}
3433
cb68f92d
GS
3434/* initialize curinterp */
3435STATIC void
cea2e8a9 3436S_init_interp(pTHX)
cb68f92d 3437{
97aff369 3438 dVAR;
acfe0abc
GS
3439#ifdef MULTIPLICITY
3440# define PERLVAR(var,type)
3441# define PERLVARA(var,n,type)
3442# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3443# define PERLVARI(var,type,init) aTHX->var = init;
3444# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3445# else
acfe0abc
GS
3446# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3447# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3448# endif
acfe0abc 3449# include "intrpvar.h"
b7f7fff6 3450# include "thrdvar.h"
acfe0abc
GS
3451# undef PERLVAR
3452# undef PERLVARA
3453# undef PERLVARI
3454# undef PERLVARIC
3455#else
3456# define PERLVAR(var,type)
3457# define PERLVARA(var,n,type)
3458# define PERLVARI(var,type,init) PL_##var = init;
3459# define PERLVARIC(var,type,init) PL_##var = init;
3460# include "intrpvar.h"
b7f7fff6 3461# include "thrdvar.h"
acfe0abc
GS
3462# undef PERLVAR
3463# undef PERLVARA
3464# undef PERLVARI
3465# undef PERLVARIC
cb68f92d
GS
3466#endif
3467
cb68f92d
GS
3468}
3469
76e3520e 3470STATIC void
cea2e8a9 3471S_init_main_stash(pTHX)
79072805 3472{
97aff369 3473 dVAR;
463ee0b2 3474 GV *gv;
6e72f9df 3475
3280af22 3476 PL_curstash = PL_defstash = newHV();
23579a14
NC
3477 /* We know that the string "main" will be in the global shared string
3478 table, so it's a small saving to use it rather than allocate another
3479 8 bytes. */
18916d0d 3480 PL_curstname = newSVpvs_share("main");
fafc274c 3481 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3482 /* If we hadn't caused another reference to "main" to be in the shared
3483 string table above, then it would be worth reordering these two,
3484 because otherwise all we do is delete "main" from it as a consequence
3485 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3486 SvREFCNT_dec(GvHV(gv));
23579a14 3487 hv_name_set(PL_defstash, "main", 4, 0);
b37c2d43 3488 GvHV(gv) = (HV*)SvREFCNT_inc_simple(PL_defstash);
463ee0b2 3489 SvREADONLY_on(gv);
fafc274c
NC
3490 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3491 SVt_PVAV)));
b37c2d43 3492 SvREFCNT_inc_simple(PL_incgv); /* Don't allow it to be freed */
3280af22 3493 GvMULTI_on(PL_incgv);
fafc274c 3494 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3495 GvMULTI_on(PL_hintgv);
fafc274c 3496 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
b37c2d43 3497 SvREFCNT_inc_simple(PL_defgv);
fafc274c 3498 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));