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Proper symbian fix (replacing change #29813) by Jarkko
[perl5.git] / perl.c
CommitLineData
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1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
fdf8c088 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 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
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15/* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
19 */
20
ae3f3efd
PS
21/* PSz 12 Nov 03
22 *
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
26 *
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
32 *
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
38 *
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
42 *
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
45 *
46 * References:
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
55 * CVE candidate:
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
011f1a1a
JH
85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
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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
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NC
108#endif
109
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110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
d6f07c05
AL
140#define CALL_BODY_EVAL(myop) \
141 if (PL_op == (myop)) \
142 PL_op = Perl_pp_entereval(aTHX); \
143 if (PL_op) \
144 CALLRUNOPS(aTHX);
145
146#define CALL_BODY_SUB(myop) \
147 if (PL_op == (myop)) \
148 PL_op = Perl_pp_entersub(aTHX); \
149 if (PL_op) \
150 CALLRUNOPS(aTHX);
151
152#define CALL_LIST_BODY(cv) \
153 PUSHMARK(PL_stack_sp); \
154 call_sv((SV*)(cv), G_EVAL|G_DISCARD);
155
e6827a76 156static void
daa7d858 157S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 158{
27da23d5 159 dVAR;
e6827a76
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160 if (!PL_curinterp) {
161 PERL_SET_INTERP(my_perl);
3db8f154 162#if defined(USE_ITHREADS)
e6827a76
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163 INIT_THREADS;
164 ALLOC_THREAD_KEY;
165 PERL_SET_THX(my_perl);
166 OP_REFCNT_INIT;
71ad1b0c 167 HINTS_REFCNT_INIT;
e6827a76 168 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 169# endif
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170#ifdef PERL_IMPLICIT_CONTEXT
171 MUTEX_INIT(&PL_my_ctx_mutex);
172# endif
e6827a76
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173 }
174 else {
175 PERL_SET_THX(my_perl);
176 }
177}
06d86050 178
32e30700
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179#ifdef PERL_IMPLICIT_SYS
180PerlInterpreter *
7766f137
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181perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
182 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
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183 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
184 struct IPerlDir* ipD, struct IPerlSock* ipS,
185 struct IPerlProc* ipP)
186{
187 PerlInterpreter *my_perl;
9f653bb5 188 /* Newx() needs interpreter, so call malloc() instead */
32e30700 189 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 190 S_init_tls_and_interp(my_perl);
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191 Zero(my_perl, 1, PerlInterpreter);
192 PL_Mem = ipM;
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193 PL_MemShared = ipMS;
194 PL_MemParse = ipMP;
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195 PL_Env = ipE;
196 PL_StdIO = ipStd;
197 PL_LIO = ipLIO;
198 PL_Dir = ipD;
199 PL_Sock = ipS;
200 PL_Proc = ipP;
7cb608b5 201 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 202
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203 return my_perl;
204}
205#else
954c1994
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206
207/*
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208=head1 Embedding Functions
209
954c1994
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210=for apidoc perl_alloc
211
212Allocates a new Perl interpreter. See L<perlembed>.
213
214=cut
215*/
216
93a17b20 217PerlInterpreter *
cea2e8a9 218perl_alloc(void)
79072805 219{
cea2e8a9 220 PerlInterpreter *my_perl;
79072805 221
9f653bb5 222 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 223 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 224
e6827a76 225 S_init_tls_and_interp(my_perl);
7cb608b5 226#ifndef PERL_TRACK_MEMPOOL
07409e01 227 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
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228#else
229 Zero(my_perl, 1, PerlInterpreter);
230 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
231 return my_perl;
232#endif
79072805 233}
32e30700 234#endif /* PERL_IMPLICIT_SYS */
79072805 235
954c1994
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236/*
237=for apidoc perl_construct
238
239Initializes a new Perl interpreter. See L<perlembed>.
240
241=cut
242*/
243
79072805 244void
0cb96387 245perl_construct(pTHXx)
79072805 246{
27da23d5 247 dVAR;
ed6c66dd 248 PERL_UNUSED_ARG(my_perl);
8990e307 249#ifdef MULTIPLICITY
54aff467 250 init_interp();
ac27b0f5 251 PL_perl_destruct_level = 1;
54aff467
GS
252#else
253 if (PL_perl_destruct_level > 0)
254 init_interp();
255#endif
33f46ff6 256 /* Init the real globals (and main thread)? */
3280af22 257 if (!PL_linestr) {
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258 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
259
561b68a9 260 PL_linestr = newSV(79);
3280af22 261 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 262
3280af22 263 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
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264 /* set read-only and try to insure than we wont see REFCNT==0
265 very often */
266
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267 SvREADONLY_on(&PL_sv_undef);
268 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 269
3280af22 270 sv_setpv(&PL_sv_no,PL_No);
0309f36e
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271 /* value lookup in void context - happens to have the side effect
272 of caching the numeric forms. */
273 SvIV(&PL_sv_no);
3280af22
NIS
274 SvNV(&PL_sv_no);
275 SvREADONLY_on(&PL_sv_no);
276 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 277
3280af22 278 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 279 SvIV(&PL_sv_yes);
3280af22
NIS
280 SvNV(&PL_sv_yes);
281 SvREADONLY_on(&PL_sv_yes);
282 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7996736c
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283
284 SvREADONLY_on(&PL_sv_placeholder);
285 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 286 }
79072805 287
8aad04aa 288 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 289#ifdef PERL_USES_PL_PIDSTATUS
3280af22 290 PL_pidstatus = newHV();
ca0c25f6 291#endif
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292 }
293
396482e1 294 PL_rs = newSVpvs("\n");
dc92893f 295
cea2e8a9 296 init_stacks();
79072805 297
748a9306 298 init_ids();
3280af22 299 PL_lex_state = LEX_NOTPARSING;
a5f75d66 300
312caa8e 301 JMPENV_BOOTSTRAP;
f86702cc
PP
302 STATUS_ALL_SUCCESS;
303
0672f40e 304 init_i18nl10n(1);
36477c24 305 SET_NUMERIC_STANDARD();
0b5b802d 306
ab821d7f 307#if defined(LOCAL_PATCH_COUNT)
3280af22 308 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
309#endif
310
52853b95
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311#ifdef HAVE_INTERP_INTERN
312 sys_intern_init();
313#endif
314
3a1ee7e8 315 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 316
3280af22
NIS
317 PL_fdpid = newAV(); /* for remembering popen pids by fd */
318 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 319 PL_errors = newSVpvs("");
48c6b404 320 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
321 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
322 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 323#ifdef USE_ITHREADS
13137afc
AB
324 PL_regex_padav = newAV();
325 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
326 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 327#endif
e5dd39fc 328#ifdef USE_REENTRANT_API
59bd0823 329 Perl_reentrant_init(aTHX);
e5dd39fc 330#endif
3d47000e
AB
331
332 /* Note that strtab is a rather special HV. Assumptions are made
333 about not iterating on it, and not adding tie magic to it.
334 It is properly deallocated in perl_destruct() */
335 PL_strtab = newHV();
336
3d47000e
AB
337 HvSHAREKEYS_off(PL_strtab); /* mandatory */
338 hv_ksplit(PL_strtab, 512);
339
0631ea03
AB
340#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
341 _dyld_lookup_and_bind
342 ("__environ", (unsigned long *) &environ_pointer, NULL);
343#endif /* environ */
344
2f42fcb0
JH
345#ifndef PERL_MICRO
346# ifdef USE_ENVIRON_ARRAY
0631ea03 347 PL_origenviron = environ;
2f42fcb0 348# endif
0631ea03
AB
349#endif
350
5311654c 351 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 352 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
353 * BeOS has those, but returns the wrong value.
354 * The HZ if not originally defined has been by now
355 * been defined as CLK_TCK, if available. */
dbc1d986 356#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
357 PL_clocktick = sysconf(_SC_CLK_TCK);
358 if (PL_clocktick <= 0)
359#endif
360 PL_clocktick = HZ;
361
081fc587
AB
362 PL_stashcache = newHV();
363
e6830b13
NC
364 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
365 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 366
27da23d5
JH
367#ifdef HAS_MMAP
368 if (!PL_mmap_page_size) {
369#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
370 {
371 SETERRNO(0, SS_NORMAL);
372# ifdef _SC_PAGESIZE
373 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
374# else
375 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
376# endif
377 if ((long) PL_mmap_page_size < 0) {
378 if (errno) {
44f8325f 379 SV * const error = ERRSV;
d4c19fe8 380 SvUPGRADE(error, SVt_PV);
0510663f 381 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
382 }
383 else
384 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
385 }
386 }
387#else
388# ifdef HAS_GETPAGESIZE
389 PL_mmap_page_size = getpagesize();
390# else
391# if defined(I_SYS_PARAM) && defined(PAGESIZE)
392 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
393# endif
394# endif
395#endif
396 if (PL_mmap_page_size <= 0)
397 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
398 (IV) PL_mmap_page_size);
399 }
400#endif /* HAS_MMAP */
401
402#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
403 PL_timesbase.tms_utime = 0;
404 PL_timesbase.tms_stime = 0;
405 PL_timesbase.tms_cutime = 0;
406 PL_timesbase.tms_cstime = 0;
407#endif
408
5336380d
NC
409#ifdef PERL_MAD
410 PL_curforce = -1;
411#endif
412
8990e307 413 ENTER;
79072805
LW
414}
415
954c1994 416/*
62375a60
NIS
417=for apidoc nothreadhook
418
419Stub that provides thread hook for perl_destruct when there are
420no threads.
421
422=cut
423*/
424
425int
4e9e3734 426Perl_nothreadhook(pTHX)
62375a60 427{
96a5add6 428 PERL_UNUSED_CONTEXT;
62375a60
NIS
429 return 0;
430}
431
41e4abd8
NC
432#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
433void
434Perl_dump_sv_child(pTHX_ SV *sv)
435{
436 ssize_t got;
bf357333
NC
437 const int sock = PL_dumper_fd;
438 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
439 union control_un control;
440 struct msghdr msg;
808ad2d0 441 struct iovec vec[2];
bf357333 442 struct cmsghdr *cmptr;
808ad2d0
NC
443 int returned_errno;
444 unsigned char buffer[256];
41e4abd8 445
bf357333 446 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
447 return;
448
449 PerlIO_flush(Perl_debug_log);
450
bf357333
NC
451 /* All these shenanigans are to pass a file descriptor over to our child for
452 it to dump out to. We can't let it hold open the file descriptor when it
453 forks, as the file descriptor it will dump to can turn out to be one end
454 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 455 be open, the wait would be forever.) */
bf357333
NC
456
457 msg.msg_control = control.control;
458 msg.msg_controllen = sizeof(control.control);
459 /* We're a connected socket so we don't need a destination */
460 msg.msg_name = NULL;
461 msg.msg_namelen = 0;
462 msg.msg_iov = vec;
808ad2d0 463 msg.msg_iovlen = 1;
bf357333
NC
464
465 cmptr = CMSG_FIRSTHDR(&msg);
466 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
467 cmptr->cmsg_level = SOL_SOCKET;
468 cmptr->cmsg_type = SCM_RIGHTS;
469 *((int *)CMSG_DATA(cmptr)) = 1;
470
471 vec[0].iov_base = (void*)&sv;
472 vec[0].iov_len = sizeof(sv);
473 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
474
475 if(got < 0) {
bf357333 476 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
477 abort();
478 }
bf357333
NC
479 if(got < sizeof(sv)) {
480 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
481 abort();
482 }
483
808ad2d0
NC
484 /* Return protocol is
485 int: errno value
486 unsigned char: length of location string (0 for empty)
487 unsigned char*: string (not terminated)
488 */
489 vec[0].iov_base = (void*)&returned_errno;
490 vec[0].iov_len = sizeof(returned_errno);
491 vec[1].iov_base = buffer;
492 vec[1].iov_len = 1;
493
494 got = readv(sock, vec, 2);
41e4abd8
NC
495
496 if(got < 0) {
497 perror("Debug leaking scalars parent read failed");
808ad2d0 498 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
499 abort();
500 }
808ad2d0 501 if(got < sizeof(returned_errno) + 1) {
41e4abd8 502 perror("Debug leaking scalars parent short read");
808ad2d0 503 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
504 abort();
505 }
506
808ad2d0
NC
507 if (*buffer) {
508 got = read(sock, buffer + 1, *buffer);
509 if(got < 0) {
510 perror("Debug leaking scalars parent read 2 failed");
511 PerlIO_flush(PerlIO_stderr());
512 abort();
513 }
514
515 if(got < *buffer) {
516 perror("Debug leaking scalars parent short read 2");
517 PerlIO_flush(PerlIO_stderr());
518 abort();
519 }
520 }
521
522 if (returned_errno || *buffer) {
523 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
524 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
525 returned_errno, strerror(returned_errno));
41e4abd8
NC
526 }
527}
528#endif
529
62375a60 530/*
954c1994
GS
531=for apidoc perl_destruct
532
533Shuts down a Perl interpreter. See L<perlembed>.
534
535=cut
536*/
537
31d77e54 538int
0cb96387 539perl_destruct(pTHXx)
79072805 540{
27da23d5 541 dVAR;
8ea43dc8 542 VOL int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 543 HV *hv;
2aa47728 544#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
545 pid_t child;
546#endif
8990e307 547
ed6c66dd 548 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 549
7766f137
GS
550 /* wait for all pseudo-forked children to finish */
551 PERL_WAIT_FOR_CHILDREN;
552
3280af22 553 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
554#ifdef DEBUGGING
555 {
9d4ba2ae
AL
556 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
557 if (s) {
e1ec3a88 558 const int i = atoi(s);
5f05dabc
PP
559 if (destruct_level < i)
560 destruct_level = i;
561 }
4633a7c4
LW
562 }
563#endif
564
27da23d5 565 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
566 dJMPENV;
567 int x = 0;
568
569 JMPENV_PUSH(x);
1b6737cc 570 PERL_UNUSED_VAR(x);
f3faeb53
AB
571 if (PL_endav && !PL_minus_c)
572 call_list(PL_scopestack_ix, PL_endav);
573 JMPENV_POP;
26f423df 574 }
f3faeb53 575 LEAVE;
a0d0e21e
LW
576 FREETMPS;
577
e00b64d4 578 /* Need to flush since END blocks can produce output */
f13a2bc0 579 my_fflush_all();
e00b64d4 580
62375a60
NIS
581 if (CALL_FPTR(PL_threadhook)(aTHX)) {
582 /* Threads hook has vetoed further cleanup */
37038d91 583 return STATUS_EXIT;
62375a60
NIS
584 }
585
2aa47728
NC
586#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
587 if (destruct_level != 0) {
588 /* Fork here to create a child. Our child's job is to preserve the
589 state of scalars prior to destruction, so that we can instruct it
590 to dump any scalars that we later find have leaked.
591 There's no subtlety in this code - it assumes POSIX, and it doesn't
592 fail gracefully */
593 int fd[2];
594
595 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
596 perror("Debug leaking scalars socketpair failed");
597 abort();
598 }
599
600 child = fork();
601 if(child == -1) {
602 perror("Debug leaking scalars fork failed");
603 abort();
604 }
605 if (!child) {
606 /* We are the child */
3125a5a4
NC
607 const int sock = fd[1];
608 const int debug_fd = PerlIO_fileno(Perl_debug_log);
609 int f;
808ad2d0
NC
610 const char *where;
611 /* Our success message is an integer 0, and a char 0 */
612 static const char success[sizeof(int) + 1];
3125a5a4 613
2aa47728 614 close(fd[0]);
2aa47728 615
3125a5a4
NC
616 /* We need to close all other file descriptors otherwise we end up
617 with interesting hangs, where the parent closes its end of a
618 pipe, and sits waiting for (another) child to terminate. Only
619 that child never terminates, because it never gets EOF, because
bf357333
NC
620 we also have the far end of the pipe open. We even need to
621 close the debugging fd, because sometimes it happens to be one
622 end of a pipe, and a process is waiting on the other end for
623 EOF. Normally it would be closed at some point earlier in
624 destruction, but if we happen to cause the pipe to remain open,
625 EOF never occurs, and we get an infinite hang. Hence all the
626 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
627
628 f = sysconf(_SC_OPEN_MAX);
629 if(f < 0) {
808ad2d0
NC
630 where = "sysconf failed";
631 goto abort;
3125a5a4
NC
632 }
633 while (f--) {
634 if (f == sock)
635 continue;
3125a5a4
NC
636 close(f);
637 }
638
2aa47728
NC
639 while (1) {
640 SV *target;
bf357333
NC
641 union control_un control;
642 struct msghdr msg;
643 struct iovec vec[1];
644 struct cmsghdr *cmptr;
645 ssize_t got;
646 int got_fd;
647
648 msg.msg_control = control.control;
649 msg.msg_controllen = sizeof(control.control);
650 /* We're a connected socket so we don't need a source */
651 msg.msg_name = NULL;
652 msg.msg_namelen = 0;
653 msg.msg_iov = vec;
654 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
655
656 vec[0].iov_base = (void*)&target;
657 vec[0].iov_len = sizeof(target);
658
659 got = recvmsg(sock, &msg, 0);
2aa47728
NC
660
661 if(got == 0)
662 break;
663 if(got < 0) {
808ad2d0
NC
664 where = "recv failed";
665 goto abort;
2aa47728
NC
666 }
667 if(got < sizeof(target)) {
808ad2d0
NC
668 where = "short recv";
669 goto abort;
2aa47728 670 }
bf357333 671
808ad2d0
NC
672 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
673 where = "no cmsg";
674 goto abort;
675 }
676 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
677 where = "wrong cmsg_len";
678 goto abort;
679 }
680 if(cmptr->cmsg_level != SOL_SOCKET) {
681 where = "wrong cmsg_level";
682 goto abort;
683 }
684 if(cmptr->cmsg_type != SCM_RIGHTS) {
685 where = "wrong cmsg_type";
686 goto abort;
687 }
bf357333
NC
688
689 got_fd = *(int*)CMSG_DATA(cmptr);
690 /* For our last little bit of trickery, put the file descriptor
691 back into Perl_debug_log, as if we never actually closed it
692 */
808ad2d0
NC
693 if(got_fd != debug_fd) {
694 if (dup2(got_fd, debug_fd) == -1) {
695 where = "dup2";
696 goto abort;
697 }
698 }
2aa47728 699 sv_dump(target);
bf357333 700
2aa47728
NC
701 PerlIO_flush(Perl_debug_log);
702
808ad2d0 703 got = write(sock, &success, sizeof(success));
2aa47728
NC
704
705 if(got < 0) {
808ad2d0
NC
706 where = "write failed";
707 goto abort;
2aa47728 708 }
808ad2d0
NC
709 if(got < sizeof(success)) {
710 where = "short write";
711 goto abort;
2aa47728
NC
712 }
713 }
714 _exit(0);
808ad2d0
NC
715 abort:
716 {
717 int send_errno = errno;
718 unsigned char length = (unsigned char) strlen(where);
719 struct iovec failure[3] = {
720 {(void*)&send_errno, sizeof(send_errno)},
721 {&length, 1},
722 {(void*)where, length}
723 };
724 int got = writev(sock, failure, 3);
725 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
726 in the parent if we try to read from the socketpair after the
727 child has exited, even if there was data to read.
728 So sleep a bit to give the parent a fighting chance of
729 reading the data. */
730 sleep(2);
731 _exit((got == -1) ? errno : 0);
732 }
bf357333 733 /* End of child. */
2aa47728 734 }
41e4abd8 735 PL_dumper_fd = fd[0];
2aa47728
NC
736 close(fd[1]);
737 }
738#endif
739
ff0cee69
PP
740 /* We must account for everything. */
741
742 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
743 /* Do this now, because destroying ops can cause new SVs to be generated
744 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
745 PL_curcop to point to a valid op from which the filename structure
746 member is copied. */
747 PL_curcop = &PL_compiling;
3280af22 748 if (PL_main_root) {
4e380990
DM
749 /* ensure comppad/curpad to refer to main's pad */
750 if (CvPADLIST(PL_main_cv)) {
751 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
752 }
3280af22 753 op_free(PL_main_root);
5f66b61c 754 PL_main_root = NULL;
a0d0e21e 755 }
5f66b61c 756 PL_main_start = NULL;
3280af22 757 SvREFCNT_dec(PL_main_cv);
601f1833 758 PL_main_cv = NULL;
24d3c518 759 PL_dirty = TRUE;
ff0cee69 760
13621cfb
NIS
761 /* Tell PerlIO we are about to tear things apart in case
762 we have layers which are using resources that should
763 be cleaned up now.
764 */
765
766 PerlIO_destruct(aTHX);
767
3280af22 768 if (PL_sv_objcount) {
a0d0e21e
LW
769 /*
770 * Try to destruct global references. We do this first so that the
771 * destructors and destructees still exist. Some sv's might remain.
772 * Non-referenced objects are on their own.
773 */
a0d0e21e 774 sv_clean_objs();
bf9cdc68 775 PL_sv_objcount = 0;
a0de6cf5 776 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 777 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
778 }
779
5cd24f17 780 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 781 SvREFCNT_dec(PL_warnhook);
a0714e2c 782 PL_warnhook = NULL;
3280af22 783 SvREFCNT_dec(PL_diehook);
a0714e2c 784 PL_diehook = NULL;
5cd24f17 785
4b556e6c 786 /* call exit list functions */
3280af22 787 while (PL_exitlistlen-- > 0)
acfe0abc 788 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 789
3280af22 790 Safefree(PL_exitlist);
4b556e6c 791
1c4916e5
CB
792 PL_exitlist = NULL;
793 PL_exitlistlen = 0;
794
551a8b83 795 /* jettison our possibly duplicated environment */
4b647fb0
DM
796 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
797 * so we certainly shouldn't free it here
798 */
2f42fcb0 799#ifndef PERL_MICRO
4b647fb0 800#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 801 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
802#ifdef USE_ITHREADS
803 /* only main thread can free environ[0] contents */
804 && PL_curinterp == aTHX
805#endif
806 )
807 {
551a8b83
JH
808 I32 i;
809
810 for (i = 0; environ[i]; i++)
4b420006 811 safesysfree(environ[i]);
0631ea03 812
4b420006
JH
813 /* Must use safesysfree() when working with environ. */
814 safesysfree(environ);
551a8b83
JH
815
816 environ = PL_origenviron;
817 }
818#endif
2f42fcb0 819#endif /* !PERL_MICRO */
551a8b83 820
30985c42
JH
821 if (destruct_level == 0) {
822
823 DEBUG_P(debprofdump());
824
825#if defined(PERLIO_LAYERS)
826 /* No more IO - including error messages ! */
827 PerlIO_cleanup(aTHX);
828#endif
829
830 CopFILE_free(&PL_compiling);
831 CopSTASH_free(&PL_compiling);
832
833 /* The exit() function will do everything that needs doing. */
834 return STATUS_EXIT;
835 }
836
804ffa60 837 /* reset so print() ends up where we expect */
a0714e2c 838 setdefout(NULL);
804ffa60 839
5f8cb046
DM
840#ifdef USE_ITHREADS
841 /* the syntax tree is shared between clones
842 * so op_free(PL_main_root) only ReREFCNT_dec's
843 * REGEXPs in the parent interpreter
844 * we need to manually ReREFCNT_dec for the clones
845 */
846 {
847 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 848 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
849
850 while (i) {
c4420975 851 SV * const resv = ary[--i];
35061a7e
DM
852
853 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 854 /* this is PL_reg_curpm, already freed
35061a7e
DM
855 * flag is set in regexec.c:S_regtry
856 */
857 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 858 }
1cc8b4c5
AB
859 else if(SvREPADTMP(resv)) {
860 SvREPADTMP_off(resv);
861 }
a560f29b
NC
862 else if(SvIOKp(resv)) {
863 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
864 ReREFCNT_dec(re);
865 }
866 }
867 }
868 SvREFCNT_dec(PL_regex_padav);
7d49f689 869 PL_regex_padav = NULL;
5f8cb046
DM
870 PL_regex_pad = NULL;
871#endif
872
081fc587
AB
873 SvREFCNT_dec((SV*) PL_stashcache);
874 PL_stashcache = NULL;
875
5f05dabc
PP
876 /* loosen bonds of global variables */
877
3280af22
NIS
878 if(PL_rsfp) {
879 (void)PerlIO_close(PL_rsfp);
4608196e 880 PL_rsfp = NULL;
8ebc5c01
PP
881 }
882
883 /* Filters for program text */
3280af22 884 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 885 PL_rsfp_filters = NULL;
8ebc5c01 886
84386e14
RGS
887 if (PL_minus_F) {
888 Safefree(PL_splitstr);
889 PL_splitstr = NULL;
890 }
891
8ebc5c01 892 /* switches */
3280af22
NIS
893 PL_preprocess = FALSE;
894 PL_minus_n = FALSE;
895 PL_minus_p = FALSE;
896 PL_minus_l = FALSE;
897 PL_minus_a = FALSE;
898 PL_minus_F = FALSE;
899 PL_doswitches = FALSE;
599cee73 900 PL_dowarn = G_WARN_OFF;
3280af22
NIS
901 PL_doextract = FALSE;
902 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
903 PL_unsafe = FALSE;
904
905 Safefree(PL_inplace);
bd61b366 906 PL_inplace = NULL;
a7cb1f99 907 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
908
909 if (PL_e_script) {
910 SvREFCNT_dec(PL_e_script);
a0714e2c 911 PL_e_script = NULL;
8ebc5c01
PP
912 }
913
bf9cdc68
RG
914 PL_perldb = 0;
915
8ebc5c01
PP
916 /* magical thingies */
917
7889fe52 918 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 919 PL_ofs_sv = NULL;
5f05dabc 920
7889fe52 921 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 922 PL_ors_sv = NULL;
8ebc5c01 923
3280af22 924 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 925 PL_rs = NULL;
dc92893f 926
d33b2eba 927 Safefree(PL_osname); /* $^O */
bd61b366 928 PL_osname = NULL;
5f05dabc 929
3280af22 930 SvREFCNT_dec(PL_statname);
a0714e2c
SS
931 PL_statname = NULL;
932 PL_statgv = NULL;
5f05dabc 933
8ebc5c01
PP
934 /* defgv, aka *_ should be taken care of elsewhere */
935
8ebc5c01 936 /* clean up after study() */
3280af22 937 SvREFCNT_dec(PL_lastscream);
a0714e2c 938 PL_lastscream = NULL;
3280af22
NIS
939 Safefree(PL_screamfirst);
940 PL_screamfirst = 0;
941 Safefree(PL_screamnext);
942 PL_screamnext = 0;
8ebc5c01 943
7d5ea4e7
GS
944 /* float buffer */
945 Safefree(PL_efloatbuf);
bd61b366 946 PL_efloatbuf = NULL;
7d5ea4e7
GS
947 PL_efloatsize = 0;
948
8ebc5c01 949 /* startup and shutdown function lists */
3280af22 950 SvREFCNT_dec(PL_beginav);
5a837c8f 951 SvREFCNT_dec(PL_beginav_save);
3280af22 952 SvREFCNT_dec(PL_endav);
7d30b5c4 953 SvREFCNT_dec(PL_checkav);
ece599bd 954 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
955 SvREFCNT_dec(PL_unitcheckav);
956 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 957 SvREFCNT_dec(PL_initav);
7d49f689
NC
958 PL_beginav = NULL;
959 PL_beginav_save = NULL;
960 PL_endav = NULL;
961 PL_checkav = NULL;
962 PL_checkav_save = NULL;
3c10abe3
AG
963 PL_unitcheckav = NULL;
964 PL_unitcheckav_save = NULL;
7d49f689 965 PL_initav = NULL;
5618dfe8 966
8ebc5c01 967 /* shortcuts just get cleared */
a0714e2c
SS
968 PL_envgv = NULL;
969 PL_incgv = NULL;
970 PL_hintgv = NULL;
971 PL_errgv = NULL;
972 PL_argvgv = NULL;
973 PL_argvoutgv = NULL;
974 PL_stdingv = NULL;
975 PL_stderrgv = NULL;
976 PL_last_in_gv = NULL;
977 PL_replgv = NULL;
978 PL_DBgv = NULL;
979 PL_DBline = NULL;
980 PL_DBsub = NULL;
981 PL_DBsingle = NULL;
982 PL_DBtrace = NULL;
983 PL_DBsignal = NULL;
984 PL_DBassertion = NULL;
601f1833 985 PL_DBcv = NULL;
7d49f689 986 PL_dbargs = NULL;
5c284bb0 987 PL_debstash = NULL;
8ebc5c01 988
7a1c5554 989 SvREFCNT_dec(PL_argvout_stack);
7d49f689 990 PL_argvout_stack = NULL;
8ebc5c01 991
5c831c24 992 SvREFCNT_dec(PL_modglobal);
5c284bb0 993 PL_modglobal = NULL;
5c831c24 994 SvREFCNT_dec(PL_preambleav);
7d49f689 995 PL_preambleav = NULL;
5c831c24 996 SvREFCNT_dec(PL_subname);
a0714e2c 997 PL_subname = NULL;
5c831c24 998 SvREFCNT_dec(PL_linestr);
a0714e2c 999 PL_linestr = NULL;
ca0c25f6 1000#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1001 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1002 PL_pidstatus = NULL;
ca0c25f6 1003#endif
5c831c24 1004 SvREFCNT_dec(PL_toptarget);
a0714e2c 1005 PL_toptarget = NULL;
5c831c24 1006 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1007 PL_bodytarget = NULL;
1008 PL_formtarget = NULL;
5c831c24 1009
d33b2eba 1010 /* free locale stuff */
b9582b6a 1011#ifdef USE_LOCALE_COLLATE
d33b2eba 1012 Safefree(PL_collation_name);
bd61b366 1013 PL_collation_name = NULL;
b9582b6a 1014#endif
d33b2eba 1015
b9582b6a 1016#ifdef USE_LOCALE_NUMERIC
d33b2eba 1017 Safefree(PL_numeric_name);
bd61b366 1018 PL_numeric_name = NULL;
a453c169 1019 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1020 PL_numeric_radix_sv = NULL;
b9582b6a 1021#endif
d33b2eba 1022
5c831c24
GS
1023 /* clear utf8 character classes */
1024 SvREFCNT_dec(PL_utf8_alnum);
1025 SvREFCNT_dec(PL_utf8_alnumc);
1026 SvREFCNT_dec(PL_utf8_ascii);
1027 SvREFCNT_dec(PL_utf8_alpha);
1028 SvREFCNT_dec(PL_utf8_space);
1029 SvREFCNT_dec(PL_utf8_cntrl);
1030 SvREFCNT_dec(PL_utf8_graph);
1031 SvREFCNT_dec(PL_utf8_digit);
1032 SvREFCNT_dec(PL_utf8_upper);
1033 SvREFCNT_dec(PL_utf8_lower);
1034 SvREFCNT_dec(PL_utf8_print);
1035 SvREFCNT_dec(PL_utf8_punct);
1036 SvREFCNT_dec(PL_utf8_xdigit);
1037 SvREFCNT_dec(PL_utf8_mark);
1038 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1039 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1040 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1041 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1042 SvREFCNT_dec(PL_utf8_idstart);
1043 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1044 PL_utf8_alnum = NULL;
1045 PL_utf8_alnumc = NULL;
1046 PL_utf8_ascii = NULL;
1047 PL_utf8_alpha = NULL;
1048 PL_utf8_space = NULL;
1049 PL_utf8_cntrl = NULL;
1050 PL_utf8_graph = NULL;
1051 PL_utf8_digit = NULL;
1052 PL_utf8_upper = NULL;
1053 PL_utf8_lower = NULL;
1054 PL_utf8_print = NULL;
1055 PL_utf8_punct = NULL;
1056 PL_utf8_xdigit = NULL;
1057 PL_utf8_mark = NULL;
1058 PL_utf8_toupper = NULL;
1059 PL_utf8_totitle = NULL;
1060 PL_utf8_tolower = NULL;
1061 PL_utf8_tofold = NULL;
1062 PL_utf8_idstart = NULL;
1063 PL_utf8_idcont = NULL;
5c831c24 1064
971a9dd3 1065 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1066 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1067 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1068 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1069 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1070 CopFILE_free(&PL_compiling);
1071 CopSTASH_free(&PL_compiling);
5c831c24 1072
a0d0e21e 1073 /* Prepare to destruct main symbol table. */
5f05dabc 1074
3280af22
NIS
1075 hv = PL_defstash;
1076 PL_defstash = 0;
a0d0e21e 1077 SvREFCNT_dec(hv);
5c831c24 1078 SvREFCNT_dec(PL_curstname);
a0714e2c 1079 PL_curstname = NULL;
a0d0e21e 1080
5a844595
GS
1081 /* clear queued errors */
1082 SvREFCNT_dec(PL_errors);
a0714e2c 1083 PL_errors = NULL;
5a844595 1084
a0d0e21e 1085 FREETMPS;
0453d815 1086 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1087 if (PL_scopestack_ix != 0)
9014280d 1088 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1089 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1090 (long)PL_scopestack_ix);
1091 if (PL_savestack_ix != 0)
9014280d 1092 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1093 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1094 (long)PL_savestack_ix);
1095 if (PL_tmps_floor != -1)
9014280d 1096 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1097 (long)PL_tmps_floor + 1);
a0d0e21e 1098 if (cxstack_ix != -1)
9014280d 1099 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1100 (long)cxstack_ix + 1);
a0d0e21e 1101 }
8990e307
LW
1102
1103 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1104 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1105 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1106
1107 /* the 2 is for PL_fdpid and PL_strtab */
1108 while (PL_sv_count > 2 && sv_clean_all())
1109 ;
1110
d33b2eba
GS
1111 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1112 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1113 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1114 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1115
d4777f27
GS
1116 AvREAL_off(PL_fdpid); /* no surviving entries */
1117 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1118 PL_fdpid = NULL;
d33b2eba 1119
6c644e78
GS
1120#ifdef HAVE_INTERP_INTERN
1121 sys_intern_clear();
1122#endif
1123
6e72f9df
PP
1124 /* Destruct the global string table. */
1125 {
1126 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1127 * so that sv_free() won't fail on them.
80459961
NC
1128 * Now that the global string table is using a single hunk of memory
1129 * for both HE and HEK, we either need to explicitly unshare it the
1130 * correct way, or actually free things here.
6e72f9df 1131 */
80459961
NC
1132 I32 riter = 0;
1133 const I32 max = HvMAX(PL_strtab);
c4420975 1134 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1135 HE *hent = array[0];
1136
6e72f9df 1137 for (;;) {
0453d815 1138 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1139 HE * const next = HeNEXT(hent);
9014280d 1140 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1141 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1142 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1143 Safefree(hent);
1144 hent = next;
6e72f9df
PP
1145 }
1146 if (!hent) {
1147 if (++riter > max)
1148 break;
1149 hent = array[riter];
1150 }
1151 }
80459961
NC
1152
1153 Safefree(array);
1154 HvARRAY(PL_strtab) = 0;
1155 HvTOTALKEYS(PL_strtab) = 0;
1156 HvFILL(PL_strtab) = 0;
6e72f9df 1157 }
3280af22 1158 SvREFCNT_dec(PL_strtab);
6e72f9df 1159
e652bb2f 1160#ifdef USE_ITHREADS
c21d1a0f 1161 /* free the pointer tables used for cloning */
a0739874 1162 ptr_table_free(PL_ptr_table);
bf9cdc68 1163 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1164#endif
a0739874 1165
d33b2eba
GS
1166 /* free special SVs */
1167
1168 SvREFCNT(&PL_sv_yes) = 0;
1169 sv_clear(&PL_sv_yes);
1170 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1171 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1172
1173 SvREFCNT(&PL_sv_no) = 0;
1174 sv_clear(&PL_sv_no);
1175 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1176 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1177
9f375a43
DM
1178 {
1179 int i;
1180 for (i=0; i<=2; i++) {
1181 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1182 sv_clear(PERL_DEBUG_PAD(i));
1183 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1184 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1185 }
1186 }
1187
0453d815 1188 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1189 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1190
eba0f806
DM
1191#ifdef DEBUG_LEAKING_SCALARS
1192 if (PL_sv_count != 0) {
1193 SV* sva;
1194 SV* sv;
1195 register SV* svend;
1196
1197 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1198 svend = &sva[SvREFCNT(sva)];
1199 for (sv = sva + 1; sv < svend; ++sv) {
1200 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1201 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1202 " flags=0x%"UVxf
fd0854ff
DM
1203 " refcnt=%"UVuf pTHX__FORMAT "\n"
1204 "\tallocated at %s:%d %s %s%s\n",
6c9570dc 1205 (void*)sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
fd0854ff
DM
1206 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1207 sv->sv_debug_line,
1208 sv->sv_debug_inpad ? "for" : "by",
1209 sv->sv_debug_optype ?
1210 PL_op_name[sv->sv_debug_optype]: "(none)",
1211 sv->sv_debug_cloned ? " (cloned)" : ""
1212 );
2aa47728 1213#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1214 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1215#endif
eba0f806
DM
1216 }
1217 }
1218 }
1219 }
2aa47728
NC
1220#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1221 {
1222 int status;
1223 fd_set rset;
1224 /* Wait for up to 4 seconds for child to terminate.
1225 This seems to be the least effort way of timing out on reaping
1226 its exit status. */
1227 struct timeval waitfor = {4, 0};
41e4abd8 1228 int sock = PL_dumper_fd;
2aa47728
NC
1229
1230 shutdown(sock, 1);
1231 FD_ZERO(&rset);
1232 FD_SET(sock, &rset);
1233 select(sock + 1, &rset, NULL, NULL, &waitfor);
1234 waitpid(child, &status, WNOHANG);
1235 close(sock);
1236 }
1237#endif
eba0f806 1238#endif
bf9cdc68 1239 PL_sv_count = 0;
eba0f806
DM
1240
1241
56a2bab7 1242#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1243 /* No more IO - including error messages ! */
1244 PerlIO_cleanup(aTHX);
1245#endif
1246
9f4bd222 1247 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1248 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1249 for no arg - and will try and SvREFCNT_dec it.
1250 */
1251 SvREFCNT(&PL_sv_undef) = 0;
1252 SvREADONLY_off(&PL_sv_undef);
1253
3280af22 1254 Safefree(PL_origfilename);
bd61b366 1255 PL_origfilename = NULL;
3280af22 1256 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1257 PL_reg_start_tmp = (char**)NULL;
1258 PL_reg_start_tmpl = 0;
43c5f42d 1259 Safefree(PL_reg_curpm);
82ba1be6 1260 Safefree(PL_reg_poscache);
dd28f7bb 1261 free_tied_hv_pool();
3280af22 1262 Safefree(PL_op_mask);
cf36064f 1263 Safefree(PL_psig_ptr);
bf9cdc68 1264 PL_psig_ptr = (SV**)NULL;
cf36064f 1265 Safefree(PL_psig_name);
bf9cdc68 1266 PL_psig_name = (SV**)NULL;
2c2666fc 1267 Safefree(PL_bitcount);
bd61b366 1268 PL_bitcount = NULL;
ce08f86c 1269 Safefree(PL_psig_pend);
bf9cdc68 1270 PL_psig_pend = (int*)NULL;
a0714e2c 1271 PL_formfeed = NULL;
6e72f9df 1272 nuke_stacks();
bf9cdc68
RG
1273 PL_tainting = FALSE;
1274 PL_taint_warn = FALSE;
3280af22 1275 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1276 PL_debug = 0;
ac27b0f5 1277
a0d0e21e 1278 DEBUG_P(debprofdump());
d33b2eba 1279
e5dd39fc 1280#ifdef USE_REENTRANT_API
10bc17b6 1281 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1282#endif
1283
612f20c3
GS
1284 sv_free_arenas();
1285
5d9a96ca
DM
1286 while (PL_regmatch_slab) {
1287 regmatch_slab *s = PL_regmatch_slab;
1288 PL_regmatch_slab = PL_regmatch_slab->next;
1289 Safefree(s);
1290 }
1291
fc36a67e
PP
1292 /* As the absolutely last thing, free the non-arena SV for mess() */
1293
3280af22 1294 if (PL_mess_sv) {
f350b448
NC
1295 /* we know that type == SVt_PVMG */
1296
9c63abab 1297 /* it could have accumulated taint magic */
f350b448
NC
1298 MAGIC* mg;
1299 MAGIC* moremagic;
1300 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1301 moremagic = mg->mg_moremagic;
1302 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1303 && mg->mg_len >= 0)
1304 Safefree(mg->mg_ptr);
1305 Safefree(mg);
9c63abab 1306 }
f350b448 1307
fc36a67e 1308 /* we know that type >= SVt_PV */
8bd4d4c5 1309 SvPV_free(PL_mess_sv);
3280af22
NIS
1310 Safefree(SvANY(PL_mess_sv));
1311 Safefree(PL_mess_sv);
a0714e2c 1312 PL_mess_sv = NULL;
fc36a67e 1313 }
37038d91 1314 return STATUS_EXIT;
79072805
LW
1315}
1316
954c1994
GS
1317/*
1318=for apidoc perl_free
1319
1320Releases a Perl interpreter. See L<perlembed>.
1321
1322=cut
1323*/
1324
79072805 1325void
0cb96387 1326perl_free(pTHXx)
79072805 1327{
7cb608b5 1328#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1329 {
1330 /*
1331 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1332 * value as we're probably hunting memory leaks then
1333 */
1334 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1335 if (!s || atoi(s) == 0) {
1336 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1337 thread at thread exit. */
1338 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1339 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1340 }
1341 }
7cb608b5
NC
1342#endif
1343
acfe0abc 1344#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1345# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1346 {
acfe0abc 1347# ifdef NETWARE
7af12a34 1348 void *host = nw_internal_host;
acfe0abc 1349# else
7af12a34 1350 void *host = w32_internal_host;
acfe0abc 1351# endif
7af12a34 1352 PerlMem_free(aTHXx);
acfe0abc 1353# ifdef NETWARE
7af12a34 1354 nw_delete_internal_host(host);
acfe0abc 1355# else
7af12a34 1356 win32_delete_internal_host(host);
acfe0abc 1357# endif
7af12a34 1358 }
1c0ca838
GS
1359# else
1360 PerlMem_free(aTHXx);
1361# endif
acfe0abc
GS
1362#else
1363 PerlMem_free(aTHXx);
76e3520e 1364#endif
79072805
LW
1365}
1366
b7f7fff6 1367#if defined(USE_ITHREADS)
aebd1ac7
GA
1368/* provide destructors to clean up the thread key when libperl is unloaded */
1369#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1370
826955bd 1371#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1372#pragma fini "perl_fini"
666ad1ec
GA
1373#elif defined(__sun) && !defined(__GNUC__)
1374#pragma fini (perl_fini)
aebd1ac7
GA
1375#endif
1376
0dbb1585
AL
1377static void
1378#if defined(__GNUC__)
1379__attribute__((destructor))
aebd1ac7 1380#endif
de009b76 1381perl_fini(void)
aebd1ac7 1382{
27da23d5 1383 dVAR;
aebd1ac7
GA
1384 if (PL_curinterp)
1385 FREE_THREAD_KEY;
1386}
1387
1388#endif /* WIN32 */
1389#endif /* THREADS */
1390
4b556e6c 1391void
864dbfa3 1392Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1393{
97aff369 1394 dVAR;
3280af22
NIS
1395 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1396 PL_exitlist[PL_exitlistlen].fn = fn;
1397 PL_exitlist[PL_exitlistlen].ptr = ptr;
1398 ++PL_exitlistlen;
4b556e6c
JD
1399}
1400
56cf6df8
RGS
1401#ifdef HAS_PROCSELFEXE
1402/* This is a function so that we don't hold on to MAXPATHLEN
1403 bytes of stack longer than necessary
1404 */
1405STATIC void
e1ec3a88 1406S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1407{
1408 char buf[MAXPATHLEN];
1409 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1410
1411 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1412 includes a spurious NUL which will cause $^X to fail in system
1413 or backticks (this will prevent extensions from being built and
1414 many tests from working). readlink is not meant to add a NUL.
1415 Normal readlink works fine.
1416 */
1417 if (len > 0 && buf[len-1] == '\0') {
1418 len--;
1419 }
1420
1421 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1422 returning the text "unknown" from the readlink rather than the path
1423 to the executable (or returning an error from the readlink). Any valid
1424 path has a '/' in it somewhere, so use that to validate the result.
1425 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1426 */
1427 if (len > 0 && memchr(buf, '/', len)) {
1428 sv_setpvn(sv,buf,len);
1429 }
1430 else {
1431 sv_setpv(sv,arg0);
1432 }
1433}
1434#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1435
1436STATIC void
1437S_set_caret_X(pTHX) {
97aff369 1438 dVAR;
fafc274c 1439 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1440 if (tmpgv) {
1441#ifdef HAS_PROCSELFEXE
1442 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1443#else
1444#ifdef OS2
c69033f2 1445 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1446#else
c69033f2 1447 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1448#endif
1449#endif
1450 }
1451}
1452
954c1994
GS
1453/*
1454=for apidoc perl_parse
1455
1456Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1457
1458=cut
1459*/
1460
79072805 1461int
0cb96387 1462perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1463{
27da23d5 1464 dVAR;
6224f72b 1465 I32 oldscope;
6224f72b 1466 int ret;
db36c5a1 1467 dJMPENV;
8d063cd8 1468
ed6c66dd 1469 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 1470
a687059c
LW
1471#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1472#ifdef IAMSUID
1473#undef IAMSUID
cea2e8a9 1474 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1475setuid perl scripts securely.\n");
ae3f3efd 1476#endif /* IAMSUID */
a687059c
LW
1477#endif
1478
b0891165
JH
1479#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1480 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1481 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1482 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1483 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1484 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1485 if (!PL_rehash_seed_set)
1486 PL_rehash_seed = get_hash_seed();
b0891165 1487 {
9d4ba2ae 1488 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1489
1b6737cc
AL
1490 if (s && (atoi(s) == 1))
1491 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1492 }
1493#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1494
3280af22 1495 PL_origargc = argc;
e2975953 1496 PL_origargv = argv;
a0d0e21e 1497
a2722ac9
GA
1498 if (PL_origalen != 0) {
1499 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1500 }
1501 else {
3cb9023d
JH
1502 /* Set PL_origalen be the sum of the contiguous argv[]
1503 * elements plus the size of the env in case that it is
e9137a8e 1504 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1505 * as the maximum modifiable length of $0. In the worst case
1506 * the area we are able to modify is limited to the size of
43c32782 1507 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1508 * --jhi */
e1ec3a88 1509 const char *s = NULL;
54bfe034 1510 int i;
1b6737cc 1511 const UV mask =
7d8e7db3 1512 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1513 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1514 const UV aligned =
43c32782
JH
1515 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1516
1517 /* See if all the arguments are contiguous in memory. Note
1518 * that 'contiguous' is a loose term because some platforms
1519 * align the argv[] and the envp[]. If the arguments look
1520 * like non-aligned, assume that they are 'strictly' or
1521 * 'traditionally' contiguous. If the arguments look like
1522 * aligned, we just check that they are within aligned
1523 * PTRSIZE bytes. As long as no system has something bizarre
1524 * like the argv[] interleaved with some other data, we are
1525 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1526 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1527 while (*s) s++;
1528 for (i = 1; i < PL_origargc; i++) {
1529 if ((PL_origargv[i] == s + 1
43c32782 1530#ifdef OS2
c8941eeb 1531 || PL_origargv[i] == s + 2
43c32782 1532#endif
c8941eeb
JH
1533 )
1534 ||
1535 (aligned &&
1536 (PL_origargv[i] > s &&
1537 PL_origargv[i] <=
1538 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1539 )
1540 {
1541 s = PL_origargv[i];
1542 while (*s) s++;
1543 }
1544 else
1545 break;
54bfe034 1546 }
54bfe034 1547 }
3cb9023d 1548 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1549 if (s && PL_origenviron) {
9d419b5f 1550 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1551 ||
1552 (aligned &&
1553 (PL_origenviron[0] > s &&
1554 PL_origenviron[0] <=
1555 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1556 )
1557 {
9d419b5f 1558#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1559 s = PL_origenviron[0];
1560 while (*s) s++;
1561#endif
bd61b366 1562 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1563 /* Force copy of environment. */
1564 for (i = 1; PL_origenviron[i]; i++) {
1565 if (PL_origenviron[i] == s + 1
1566 ||
1567 (aligned &&
1568 (PL_origenviron[i] > s &&
1569 PL_origenviron[i] <=
1570 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1571 )
1572 {
1573 s = PL_origenviron[i];
1574 while (*s) s++;
1575 }
1576 else
1577 break;
54bfe034 1578 }
43c32782 1579 }
54bfe034 1580 }
2d2af554 1581 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1582 }
1583
3280af22 1584 if (PL_do_undump) {
a0d0e21e
LW
1585
1586 /* Come here if running an undumped a.out. */
1587
3280af22
NIS
1588 PL_origfilename = savepv(argv[0]);
1589 PL_do_undump = FALSE;
a0d0e21e 1590 cxstack_ix = -1; /* start label stack again */
748a9306 1591 init_ids();
b7975bdd
NC
1592 assert (!PL_tainted);
1593 TAINT;
1594 S_set_caret_X(aTHX);
1595 TAINT_NOT;
a0d0e21e
LW
1596 init_postdump_symbols(argc,argv,env);
1597 return 0;
1598 }
1599
3280af22 1600 if (PL_main_root) {
3280af22 1601 op_free(PL_main_root);
5f66b61c 1602 PL_main_root = NULL;
ff0cee69 1603 }
5f66b61c 1604 PL_main_start = NULL;
3280af22 1605 SvREFCNT_dec(PL_main_cv);
601f1833 1606 PL_main_cv = NULL;
79072805 1607
3280af22
NIS
1608 time(&PL_basetime);
1609 oldscope = PL_scopestack_ix;
599cee73 1610 PL_dowarn = G_WARN_OFF;
f86702cc 1611
14dd3ad8 1612 JMPENV_PUSH(ret);
6224f72b 1613 switch (ret) {
312caa8e 1614 case 0:
14dd3ad8 1615 parse_body(env,xsinit);
3c10abe3
AG
1616 if (PL_unitcheckav)
1617 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1618 if (PL_checkav)
1619 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1620 ret = 0;
1621 break;
6224f72b
GS
1622 case 1:
1623 STATUS_ALL_FAILURE;
1624 /* FALL THROUGH */
1625 case 2:
1626 /* my_exit() was called */
3280af22 1627 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1628 LEAVE;
1629 FREETMPS;
3280af22 1630 PL_curstash = PL_defstash;
3c10abe3
AG
1631 if (PL_unitcheckav)
1632 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1633 if (PL_checkav)
1634 call_list(oldscope, PL_checkav);
37038d91 1635 ret = STATUS_EXIT;
14dd3ad8 1636 break;
6224f72b 1637 case 3:
bf49b057 1638 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1639 ret = 1;
1640 break;
6224f72b 1641 }
14dd3ad8
GS
1642 JMPENV_POP;
1643 return ret;
1644}
1645
312caa8e 1646STATIC void *
14dd3ad8 1647S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1648{
27da23d5 1649 dVAR;
312caa8e 1650 int argc = PL_origargc;
8f42b153 1651 char **argv = PL_origargv;
e1ec3a88 1652 const char *scriptname = NULL;
312caa8e 1653 VOL bool dosearch = FALSE;
e1ec3a88 1654 const char *validarg = "";
312caa8e 1655 register SV *sv;
47f56822 1656 register char *s, c;
bd61b366 1657 const char *cddir = NULL;
ab019eaa 1658#ifdef USE_SITECUSTOMIZE
20ef40cf 1659 bool minus_f = FALSE;
ab019eaa 1660#endif
312caa8e 1661
3280af22 1662 sv_setpvn(PL_linestr,"",0);
396482e1 1663 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1664 SAVEFREESV(sv);
1665 init_main_stash();
54310121 1666
6224f72b
GS
1667 for (argc--,argv++; argc > 0; argc--,argv++) {
1668 if (argv[0][0] != '-' || !argv[0][1])
1669 break;
1670#ifdef DOSUID
1671 if (*validarg)
1672 validarg = " PHOOEY ";
1673 else
1674 validarg = argv[0];
ae3f3efd
PS
1675 /*
1676 * Can we rely on the kernel to start scripts with argv[1] set to
1677 * contain all #! line switches (the whole line)? (argv[0] is set to
1678 * the interpreter name, argv[2] to the script name; argv[3] and
1679 * above may contain other arguments.)
1680 */
13281fa4 1681#endif
6224f72b
GS
1682 s = argv[0]+1;
1683 reswitch:
47f56822 1684 switch ((c = *s)) {
729a02f2 1685 case 'C':
1d5472a9
GS
1686#ifndef PERL_STRICT_CR
1687 case '\r':
1688#endif
6224f72b
GS
1689 case ' ':
1690 case '0':
1691 case 'F':
1692 case 'a':
1693 case 'c':
1694 case 'd':
1695 case 'D':
1696 case 'h':
1697 case 'i':
1698 case 'l':
1699 case 'M':
1700 case 'm':
1701 case 'n':
1702 case 'p':
1703 case 's':
1704 case 'u':
1705 case 'U':
1706 case 'v':
599cee73
PM
1707 case 'W':
1708 case 'X':
6224f72b 1709 case 'w':
06492da6 1710 case 'A':
97bd5664 1711 if ((s = moreswitches(s)))
6224f72b
GS
1712 goto reswitch;
1713 break;
33b78306 1714
1dbad523 1715 case 't':
22f7c9c9 1716 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1717 if( !PL_tainting ) {
1718 PL_taint_warn = TRUE;
1719 PL_tainting = TRUE;
1720 }
1721 s++;
1722 goto reswitch;
6224f72b 1723 case 'T':
22f7c9c9 1724 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1725 PL_tainting = TRUE;
317ea90d 1726 PL_taint_warn = FALSE;
6224f72b
GS
1727 s++;
1728 goto reswitch;
f86702cc 1729
bc9b29db
RH
1730 case 'E':
1731 PL_minus_E = TRUE;
1732 /* FALL THROUGH */
6224f72b 1733 case 'e':
bf4acbe4
GS
1734#ifdef MACOS_TRADITIONAL
1735 /* ignore -e for Dev:Pseudo argument */
1736 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1737 break;
bf4acbe4 1738#endif
a52eba0e 1739 forbid_setid('e', -1);
3280af22 1740 if (!PL_e_script) {
396482e1 1741 PL_e_script = newSVpvs("");
0cb96387 1742 filter_add(read_e_script, NULL);
6224f72b
GS
1743 }
1744 if (*++s)
3280af22 1745 sv_catpv(PL_e_script, s);
6224f72b 1746 else if (argv[1]) {
3280af22 1747 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1748 argc--,argv++;
1749 }
1750 else
47f56822 1751 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1752 sv_catpvs(PL_e_script, "\n");
6224f72b 1753 break;
afe37c7d 1754
20ef40cf 1755 case 'f':
f5542d3a 1756#ifdef USE_SITECUSTOMIZE
20ef40cf 1757 minus_f = TRUE;
f5542d3a 1758#endif
20ef40cf
GA
1759 s++;
1760 goto reswitch;
1761
6224f72b 1762 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1763 forbid_setid('I', -1);
bd61b366 1764 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1765 argc--,argv++;
1766 }
6224f72b 1767 if (s && *s) {
0df16ed7 1768 STRLEN len = strlen(s);
aec46f14 1769 const char * const p = savepvn(s, len);
88fe16b2 1770 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1771 sv_catpvs(sv, "-I");
0df16ed7 1772 sv_catpvn(sv, p, len);
396482e1 1773 sv_catpvs(sv, " ");
6224f72b 1774 Safefree(p);
0df16ed7
GS
1775 }
1776 else
a67e862a 1777 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1778 break;
1779 case 'P':
a52eba0e 1780 forbid_setid('P', -1);
3280af22 1781 PL_preprocess = TRUE;
6224f72b
GS
1782 s++;
1783 goto reswitch;
1784 case 'S':
a52eba0e 1785 forbid_setid('S', -1);
6224f72b
GS
1786 dosearch = TRUE;
1787 s++;
1788 goto reswitch;
1789 case 'V':
7edfd0ef
NC
1790 {
1791 SV *opts_prog;
1792
1793 if (!PL_preambleav)
1794 PL_preambleav = newAV();
1795 av_push(PL_preambleav,
396482e1 1796 newSVpvs("use Config;"));
7edfd0ef
NC
1797 if (*++s != ':') {
1798 STRLEN opts;
1799
396482e1 1800 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1801#ifdef VMS
396482e1 1802 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1803#else
396482e1 1804 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1805#endif
7edfd0ef 1806 opts = SvCUR(opts_prog);
efcaa95b 1807
9cd7d3f2 1808 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1809# ifdef DEBUGGING
e2e4dbf1 1810 " DEBUGGING"
6224f72b 1811# endif
4f185743
NC
1812# ifdef DEBUG_LEAKING_SCALARS
1813 " DEBUG_LEAKING_SCALARS"
1814# endif
85e1fcb9 1815# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1816 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1817# endif
1818# ifdef FAKE_THREADS
e2e4dbf1 1819 " FAKE_THREADS"
85e1fcb9 1820# endif
6224f72b 1821# ifdef MULTIPLICITY
e2e4dbf1 1822 " MULTIPLICITY"
6224f72b 1823# endif
85e1fcb9 1824# ifdef MYMALLOC
e2e4dbf1 1825 " MYMALLOC"
85e1fcb9 1826# endif
3bcf5ed8
SP
1827# ifdef NO_MATHOMS
1828 " NO_MATHOMS"
1829# endif
85e1fcb9 1830# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1831 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1832# endif
1833# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1834 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1835# endif
1836# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1837 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1838# endif
1839# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1840 " PERL_IMPLICIT_SYS"
85e1fcb9 1841# endif
a724edfe
NC
1842# ifdef PERL_MAD
1843 " PERL_MAD"
1844# endif
85e1fcb9 1845# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1846 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1847# endif
1848# ifdef PERL_NEED_APPCTX
e2e4dbf1 1849 " PERL_NEED_APPCTX"
85e1fcb9
SH
1850# endif
1851# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1852 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1853# endif
1854# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1855 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1856# endif
9c0a4d5d
DM
1857# ifdef PERL_TRACK_MEMPOOL
1858 " PERL_TRACK_MEMPOOL"
1859# endif
417cd4a8
SP
1860# ifdef PERL_USE_SAFE_PUTENV
1861 " PERL_USE_SAFE_PUTENV"
1862# endif
ca0c25f6
NC
1863#ifdef PERL_USES_PL_PIDSTATUS
1864 " PERL_USES_PL_PIDSTATUS"
1865#endif
85e1fcb9 1866# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1867 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1868# endif
1869# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1870 " THREADS_HAVE_PIDS"
85e1fcb9 1871# endif
85e1fcb9 1872# ifdef USE_64_BIT_ALL
e2e4dbf1 1873 " USE_64_BIT_ALL"
ac5e8965 1874# endif
10cc9d2a 1875# ifdef USE_64_BIT_INT
e2e4dbf1 1876 " USE_64_BIT_INT"
10cc9d2a 1877# endif
85e1fcb9 1878# ifdef USE_ITHREADS
e2e4dbf1 1879 " USE_ITHREADS"
85e1fcb9
SH
1880# endif
1881# ifdef USE_LARGE_FILES
e2e4dbf1 1882 " USE_LARGE_FILES"
ac5e8965
JH
1883# endif
1884# ifdef USE_LONG_DOUBLE
e2e4dbf1 1885 " USE_LONG_DOUBLE"
ac5e8965 1886# endif
85e1fcb9 1887# ifdef USE_PERLIO
e2e4dbf1 1888 " USE_PERLIO"
53430762 1889# endif
85e1fcb9 1890# ifdef USE_REENTRANT_API
e2e4dbf1 1891 " USE_REENTRANT_API"
85e1fcb9
SH
1892# endif
1893# ifdef USE_SFIO
e2e4dbf1 1894 " USE_SFIO"
ac5e8965 1895# endif
20ef40cf 1896# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1897 " USE_SITECUSTOMIZE"
20ef40cf 1898# endif
85e1fcb9 1899# ifdef USE_SOCKS
e2e4dbf1 1900 " USE_SOCKS"
b363f7ed 1901# endif
e2e4dbf1 1902 );
efcaa95b 1903
7edfd0ef
NC
1904 while (SvCUR(opts_prog) > opts+76) {
1905 /* find last space after "options: " and before col 76
1906 */
efcaa95b 1907
7edfd0ef 1908 const char *space;
c4420975 1909 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1910 const char c = pv[opts+76];
1911 pv[opts+76] = '\0';
1912 space = strrchr(pv+opts+26, ' ');
1913 pv[opts+76] = c;
1914 if (!space) break; /* "Can't happen" */
efcaa95b 1915
7edfd0ef 1916 /* break the line before that space */
efcaa95b 1917
7edfd0ef 1918 opts = space - pv;
89529cee 1919 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1920 STR_WITH_LEN("\\n "));
7edfd0ef 1921 }
efcaa95b 1922
396482e1 1923 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1924
6224f72b 1925#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1926 if (LOCAL_PATCH_COUNT > 0) {
1927 int i;
396482e1 1928 sv_catpvs(opts_prog,
7edfd0ef
NC
1929 "\" Locally applied patches:\\n\",");
1930 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1931 if (PL_localpatches[i])
1932 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1933 0, PL_localpatches[i], 0);
1934 }
6224f72b 1935 }
6224f72b 1936#endif
7edfd0ef
NC
1937 Perl_sv_catpvf(aTHX_ opts_prog,
1938 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1939#ifdef __DATE__
1940# ifdef __TIME__
7edfd0ef
NC
1941 Perl_sv_catpvf(aTHX_ opts_prog,
1942 ",\" Compiled at %s %s\\n\"",__DATE__,
1943 __TIME__);
6224f72b 1944# else
7edfd0ef
NC
1945 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1946 __DATE__);
6224f72b
GS
1947# endif
1948#endif
396482e1 1949 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1950 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1951 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1952#ifdef __CYGWIN__
396482e1 1953 sv_catpvs(opts_prog,
7edfd0ef 1954 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1955#endif
396482e1 1956 sv_catpvs(opts_prog,
7edfd0ef
NC
1957 "print \" \\%ENV:\\n @env\\n\" if @env;"
1958 "print \" \\@INC:\\n @INC\\n\";");
1959 }
1960 else {
1961 ++s;
1962 opts_prog = Perl_newSVpvf(aTHX_
1963 "Config::config_vars(qw%c%s%c)",
1964 0, s, 0);
1965 s += strlen(s);
1966 }
1967 av_push(PL_preambleav, opts_prog);
1968 /* don't look for script or read stdin */
1969 scriptname = BIT_BUCKET;
1970 goto reswitch;
6224f72b 1971 }
6224f72b 1972 case 'x':
3280af22 1973 PL_doextract = TRUE;
6224f72b
GS
1974 s++;
1975 if (*s)
f4c556ac 1976 cddir = s;
6224f72b
GS
1977 break;
1978 case 0:
1979 break;
1980 case '-':
1981 if (!*++s || isSPACE(*s)) {
1982 argc--,argv++;
1983 goto switch_end;
1984 }
1985 /* catch use of gnu style long options */
1986 if (strEQ(s, "version")) {
dd374669 1987 s = (char *)"v";
6224f72b
GS
1988 goto reswitch;
1989 }
1990 if (strEQ(s, "help")) {
dd374669 1991 s = (char *)"h";
6224f72b
GS
1992 goto reswitch;
1993 }
1994 s--;
1995 /* FALL THROUGH */
1996 default:
cea2e8a9 1997 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1998 }
1999 }
6224f72b 2000 switch_end:
54310121 2001
f675dbe5
CB
2002 if (
2003#ifndef SECURE_INTERNAL_GETENV
2004 !PL_tainting &&
2005#endif
cf756827 2006 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2007 {
e1ec3a88 2008 const char *popt = s;
74288ac8
GS
2009 while (isSPACE(*s))
2010 s++;
317ea90d 2011 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 2012 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 2013 PL_tainting = TRUE;
317ea90d
MS
2014 PL_taint_warn = FALSE;
2015 }
74288ac8 2016 else {
bd61b366 2017 char *popt_copy = NULL;
74288ac8 2018 while (s && *s) {
4ea8f8fb 2019 char *d;
74288ac8
GS
2020 while (isSPACE(*s))
2021 s++;
2022 if (*s == '-') {
2023 s++;
2024 if (isSPACE(*s))
2025 continue;
2026 }
4ea8f8fb 2027 d = s;
74288ac8
GS
2028 if (!*s)
2029 break;
e4af53b0 2030 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 2031 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2032 while (++s && *s) {
2033 if (isSPACE(*s)) {
cf756827
GS
2034 if (!popt_copy) {
2035 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
2036 s = popt_copy + (s - popt);
2037 d = popt_copy + (d - popt);
2038 }
4ea8f8fb
MS
2039 *s++ = '\0';
2040 break;
2041 }
2042 }
1c4db469 2043 if (*d == 't') {
317ea90d
MS
2044 if( !PL_tainting ) {
2045 PL_taint_warn = TRUE;
2046 PL_tainting = TRUE;
2047 }
1c4db469 2048 } else {
97bd5664 2049 moreswitches(d);
1c4db469 2050 }
6224f72b 2051 }
6224f72b
GS
2052 }
2053 }
a0d0e21e 2054
20ef40cf
GA
2055#ifdef USE_SITECUSTOMIZE
2056 if (!minus_f) {
2057 if (!PL_preambleav)
2058 PL_preambleav = newAV();
2059 av_unshift(PL_preambleav, 1);
2060 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
2061 }
2062#endif
2063
6224f72b
GS
2064 if (!scriptname)
2065 scriptname = argv[0];
3280af22 2066 if (PL_e_script) {
6224f72b
GS
2067 argc++,argv--;
2068 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2069 }
bd61b366 2070 else if (scriptname == NULL) {
6224f72b
GS
2071#ifdef MSDOS
2072 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2073 moreswitches("h");
6224f72b
GS
2074#endif
2075 scriptname = "-";
2076 }
2077
b7975bdd
NC
2078 /* Set $^X early so that it can be used for relocatable paths in @INC */
2079 assert (!PL_tainted);
2080 TAINT;
2081 S_set_caret_X(aTHX);
2082 TAINT_NOT;
6224f72b
GS
2083 init_perllib();
2084
a52eba0e
NC
2085 {
2086 int suidscript;
2087 const int fdscript
2088 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2089
a52eba0e 2090 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2091
64ca3a65 2092#ifndef PERL_MICRO
a52eba0e
NC
2093# if defined(SIGCHLD) || defined(SIGCLD)
2094 {
2095# ifndef SIGCHLD
2096# define SIGCHLD SIGCLD
2097# endif
2098 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2099 if (sigstate == (Sighandler_t) SIG_IGN) {
2100 if (ckWARN(WARN_SIGNAL))
2101 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2102 "Can't ignore signal CHLD, forcing to default");
2103 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2104 }
0b5b802d 2105 }
a52eba0e 2106# endif
64ca3a65 2107#endif
0b5b802d 2108
a52eba0e 2109 if (PL_doextract
bf4acbe4 2110#ifdef MACOS_TRADITIONAL
a52eba0e 2111 || gMacPerl_AlwaysExtract
bf4acbe4 2112#endif
a52eba0e 2113 ) {
faef540c
NC
2114
2115 /* This will croak if suidscript is >= 0, as -x cannot be used with
2116 setuid scripts. */
2117 forbid_setid('x', suidscript);
2118 /* Hence you can't get here if suidscript >= 0 */
2119
2120 find_beginning();
a52eba0e
NC
2121 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2122 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2123 }
f4c556ac 2124 }
6224f72b 2125
561b68a9 2126 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2127 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2128 CvUNIQUE_on(PL_compcv);
2129
dd2155a4 2130 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2131
0c4f7ff0 2132 boot_core_PerlIO();
6224f72b 2133 boot_core_UNIVERSAL();
09bef843 2134 boot_core_xsutils();
6224f72b
GS
2135
2136 if (xsinit)
acfe0abc 2137 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2138#ifndef PERL_MICRO
d0d72822 2139#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2140 init_os_extras();
6224f72b 2141#endif
64ca3a65 2142#endif
6224f72b 2143
29209bc5 2144#ifdef USE_SOCKS
1b9c9cf5
DH
2145# ifdef HAS_SOCKS5_INIT
2146 socks5_init(argv[0]);
2147# else
29209bc5 2148 SOCKSinit(argv[0]);
1b9c9cf5 2149# endif
ac27b0f5 2150#endif
29209bc5 2151
6224f72b
GS
2152 init_predump_symbols();
2153 /* init_postdump_symbols not currently designed to be called */
2154 /* more than once (ENV isn't cleared first, for example) */
2155 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2156 if (!PL_do_undump)
6224f72b
GS
2157 init_postdump_symbols(argc,argv,env);
2158
27da23d5
JH
2159 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2160 * or explicitly in some platforms.
085a54d9 2161 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2162 * look like the user wants to use UTF-8. */
a0fd4948 2163#if defined(__SYMBIAN32__)
27da23d5
JH
2164 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2165#endif
06e66572
JH
2166 if (PL_unicode) {
2167 /* Requires init_predump_symbols(). */
a05d7ebb 2168 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2169 IO* io;
2170 PerlIO* fp;
2171 SV* sv;
2172
a05d7ebb 2173 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2174 * and the default open disciplines. */
a05d7ebb
JH
2175 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2176 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2177 (fp = IoIFP(io)))
2178 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2179 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2180 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2181 (fp = IoOFP(io)))
2182 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2183 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2184 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2185 (fp = IoOFP(io)))
2186 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2187 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2188 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2189 SVt_PV)))) {
a05d7ebb
JH
2190 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2191 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2192 if (in) {
2193 if (out)
2194 sv_setpvn(sv, ":utf8\0:utf8", 11);
2195 else
2196 sv_setpvn(sv, ":utf8\0", 6);
2197 }
2198 else if (out)
2199 sv_setpvn(sv, "\0:utf8", 6);
2200 SvSETMAGIC(sv);
2201 }
b310b053
JH
2202 }
2203 }
2204
4ffa73a3
JH
2205 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2206 if (strEQ(s, "unsafe"))
2207 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2208 else if (strEQ(s, "safe"))
2209 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2210 else
2211 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2212 }
2213
81d86705
NC
2214#ifdef PERL_MAD
2215 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2216 PL_madskills = 1;
2217 PL_minus_c = 1;
2218 if (!s || !s[0])
2219 PL_xmlfp = PerlIO_stdout();
2220 else {
2221 PL_xmlfp = PerlIO_open(s, "w");
2222 if (!PL_xmlfp)
2223 Perl_croak(aTHX_ "Can't open %s", s);
2224 }
2225 my_setenv("PERL_XMLDUMP", Nullch); /* hide from subprocs */
2226 }
2227 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2228 PL_madskills = atoi(s);
2229 my_setenv("PERL_MADSKILLS", Nullch); /* hide from subprocs */
2230 }
2231#endif
2232
6224f72b
GS
2233 init_lexer();
2234
2235 /* now parse the script */
2236
93189314 2237 SETERRNO(0,SS_NORMAL);
3280af22 2238 PL_error_count = 0;
bf4acbe4
GS
2239#ifdef MACOS_TRADITIONAL
2240 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2241 if (PL_minus_c)
2242 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2243 else {
2244 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2245 MacPerl_MPWFileName(PL_origfilename));
2246 }
2247 }
2248#else
3280af22
NIS
2249 if (yyparse() || PL_error_count) {
2250 if (PL_minus_c)
cea2e8a9 2251 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2252 else {
cea2e8a9 2253 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2254 PL_origfilename);
6224f72b
GS
2255 }
2256 }
bf4acbe4 2257#endif
57843af0 2258 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2259 PL_curstash = PL_defstash;
2260 PL_preprocess = FALSE;
2261 if (PL_e_script) {
2262 SvREFCNT_dec(PL_e_script);
a0714e2c 2263 PL_e_script = NULL;
6224f72b
GS
2264 }
2265
3280af22 2266 if (PL_do_undump)
6224f72b
GS
2267 my_unexec();
2268
57843af0
GS
2269 if (isWARN_ONCE) {
2270 SAVECOPFILE(PL_curcop);
2271 SAVECOPLINE(PL_curcop);
3280af22 2272 gv_check(PL_defstash);
57843af0 2273 }
6224f72b
GS
2274
2275 LEAVE;
2276 FREETMPS;
2277
2278#ifdef MYMALLOC
2279 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2280 dump_mstats("after compilation:");
2281#endif
2282
2283 ENTER;
3280af22 2284 PL_restartop = 0;
312caa8e 2285 return NULL;
6224f72b
GS
2286}
2287
954c1994
GS
2288/*
2289=for apidoc perl_run
2290
2291Tells a Perl interpreter to run. See L<perlembed>.
2292
2293=cut
2294*/
2295
6224f72b 2296int
0cb96387 2297perl_run(pTHXx)
6224f72b 2298{
97aff369 2299 dVAR;
6224f72b 2300 I32 oldscope;
14dd3ad8 2301 int ret = 0;
db36c5a1 2302 dJMPENV;
6224f72b 2303
ed6c66dd 2304 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 2305
3280af22 2306 oldscope = PL_scopestack_ix;
96e176bf
CL
2307#ifdef VMS
2308 VMSISH_HUSHED = 0;
2309#endif
6224f72b 2310
14dd3ad8 2311 JMPENV_PUSH(ret);
6224f72b
GS
2312 switch (ret) {
2313 case 1:
2314 cxstack_ix = -1; /* start context stack again */
312caa8e 2315 goto redo_body;
14dd3ad8 2316 case 0: /* normal completion */
14dd3ad8
GS
2317 redo_body:
2318 run_body(oldscope);
14dd3ad8
GS
2319 /* FALL THROUGH */
2320 case 2: /* my_exit() */
3280af22 2321 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2322 LEAVE;
2323 FREETMPS;
3280af22 2324 PL_curstash = PL_defstash;
3a1ee7e8 2325 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2326 PL_endav && !PL_minus_c)
2327 call_list(oldscope, PL_endav);
6224f72b
GS
2328#ifdef MYMALLOC
2329 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2330 dump_mstats("after execution: ");
2331#endif
37038d91 2332 ret = STATUS_EXIT;
14dd3ad8 2333 break;
6224f72b 2334 case 3:
312caa8e
CS
2335 if (PL_restartop) {
2336 POPSTACK_TO(PL_mainstack);
2337 goto redo_body;
6224f72b 2338 }
bf49b057 2339 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2340 FREETMPS;
14dd3ad8
GS
2341 ret = 1;
2342 break;
6224f72b
GS
2343 }
2344
14dd3ad8
GS
2345 JMPENV_POP;
2346 return ret;
312caa8e
CS
2347}
2348
14dd3ad8 2349
dd374669 2350STATIC void
14dd3ad8
GS
2351S_run_body(pTHX_ I32 oldscope)
2352{
97aff369 2353 dVAR;
6224f72b 2354 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2355 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2356
3280af22 2357 if (!PL_restartop) {
81d86705
NC
2358#ifdef PERL_MAD
2359 if (PL_xmlfp) {
2360 xmldump_all();
2361 exit(0); /* less likely to core dump than my_exit(0) */
2362 }
2363#endif
6224f72b 2364 DEBUG_x(dump_all());
cf2782cd 2365#ifdef DEBUGGING
ecae49c0
NC
2366 if (!DEBUG_q_TEST)
2367 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2368#endif
b900a521
JH
2369 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2370 PTR2UV(thr)));
6224f72b 2371
3280af22 2372 if (PL_minus_c) {
bf4acbe4 2373#ifdef MACOS_TRADITIONAL
e69a2255
JH
2374 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2375 (gMacPerl_ErrorFormat ? "# " : ""),
2376 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2377#else
bf49b057 2378 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2379#endif
6224f72b
GS
2380 my_exit(0);
2381 }
3280af22 2382 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2383 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2384 if (PL_initav)
2385 call_list(oldscope, PL_initav);
6224f72b
GS
2386 }
2387
2388 /* do it */
2389
3280af22 2390 if (PL_restartop) {
533c011a 2391 PL_op = PL_restartop;
3280af22 2392 PL_restartop = 0;
cea2e8a9 2393 CALLRUNOPS(aTHX);
6224f72b 2394 }
3280af22
NIS
2395 else if (PL_main_start) {
2396 CvDEPTH(PL_main_cv) = 1;
533c011a 2397 PL_op = PL_main_start;
cea2e8a9 2398 CALLRUNOPS(aTHX);
6224f72b 2399 }
f6b3007c
JH
2400 my_exit(0);
2401 /* NOTREACHED */
6224f72b
GS
2402}
2403
954c1994 2404/*
ccfc67b7
JH
2405=head1 SV Manipulation Functions
2406
954c1994
GS
2407=for apidoc p||get_sv
2408
2409Returns the SV of the specified Perl scalar. If C<create> is set and the
2410Perl variable does not exist then it will be created. If C<create> is not
2411set and the variable does not exist then NULL is returned.
2412
2413=cut
2414*/
2415
6224f72b 2416SV*
864dbfa3 2417Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2418{
2419 GV *gv;
6224f72b
GS
2420 gv = gv_fetchpv(name, create, SVt_PV);
2421 if (gv)
2422 return GvSV(gv);
a0714e2c 2423 return NULL;
6224f72b
GS
2424}
2425
954c1994 2426/*
ccfc67b7
JH
2427=head1 Array Manipulation Functions
2428
954c1994
GS
2429=for apidoc p||get_av
2430
2431Returns the AV of the specified Perl array. If C<create> is set and the
2432Perl variable does not exist then it will be created. If C<create> is not
2433set and the variable does not exist then NULL is returned.
2434
2435=cut
2436*/
2437
6224f72b 2438AV*
864dbfa3 2439Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2440{
c4420975 2441 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2442 if (create)
2443 return GvAVn(gv);
2444 if (gv)
2445 return GvAV(gv);
7d49f689 2446 return NULL;
6224f72b
GS
2447}
2448
954c1994 2449/*
ccfc67b7
JH
2450=head1 Hash Manipulation Functions
2451
954c1994
GS
2452=for apidoc p||get_hv
2453
2454Returns the HV of the specified Perl hash. If C<create> is set and the
2455Perl variable does not exist then it will be created. If C<create> is not
2456set and the variable does not exist then NULL is returned.
2457
2458=cut
2459*/
2460
6224f72b 2461HV*
864dbfa3 2462Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2463{
890ce7af 2464 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2465 if (create)
2466 return GvHVn(gv);
2467 if (gv)
2468 return GvHV(gv);
5c284bb0 2469 return NULL;
a0d0e21e
LW
2470}
2471
954c1994 2472/*
ccfc67b7
JH
2473=head1 CV Manipulation Functions
2474
954c1994
GS
2475=for apidoc p||get_cv
2476
2477Returns the CV of the specified Perl subroutine. If C<create> is set and
2478the Perl subroutine does not exist then it will be declared (which has the
2479same effect as saying C<sub name;>). If C<create> is not set and the
2480subroutine does not exist then NULL is returned.
2481
2482=cut
2483*/
2484
a0d0e21e 2485CV*
864dbfa3 2486Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2487{
c4420975 2488 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2489 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2490 /* XXX this is probably not what they think they're getting.
2491 * It has the same effect as "sub name;", i.e. just a forward
2492 * declaration! */
8ebc5c01 2493 if (create && !GvCVu(gv))
774d564b 2494 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2495 newSVOP(OP_CONST, 0, newSVpv(name,0)),
5f66b61c 2496 NULL, NULL);
a0d0e21e 2497 if (gv)
8ebc5c01 2498 return GvCVu(gv);
601f1833 2499 return NULL;
a0d0e21e
LW
2500}
2501
79072805
LW
2502/* Be sure to refetch the stack pointer after calling these routines. */
2503
954c1994 2504/*
ccfc67b7
JH
2505
2506=head1 Callback Functions
2507
954c1994
GS
2508=for apidoc p||call_argv
2509
2510Performs a callback to the specified Perl sub. See L<perlcall>.
2511
2512=cut
2513*/
2514
a0d0e21e 2515I32
8f42b153 2516Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2517
8ac85365
NIS
2518 /* See G_* flags in cop.h */
2519 /* null terminated arg list */
8990e307 2520{
97aff369 2521 dVAR;
a0d0e21e 2522 dSP;
8990e307 2523
924508f0 2524 PUSHMARK(SP);
a0d0e21e 2525 if (argv) {
8990e307 2526 while (*argv) {
a0d0e21e 2527 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2528 argv++;
2529 }
a0d0e21e 2530 PUTBACK;
8990e307 2531 }
864dbfa3 2532 return call_pv(sub_name, flags);
8990e307
LW
2533}
2534
954c1994
GS
2535/*
2536=for apidoc p||call_pv
2537
2538Performs a callback to the specified Perl sub. See L<perlcall>.
2539
2540=cut
2541*/
2542
a0d0e21e 2543I32
864dbfa3 2544Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2545 /* name of the subroutine */
2546 /* See G_* flags in cop.h */
a0d0e21e 2547{
864dbfa3 2548 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2549}
2550
954c1994
GS
2551/*
2552=for apidoc p||call_method
2553
2554Performs a callback to the specified Perl method. The blessed object must
2555be on the stack. See L<perlcall>.
2556
2557=cut
2558*/
2559
a0d0e21e 2560I32
864dbfa3 2561Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2562 /* name of the subroutine */
2563 /* See G_* flags in cop.h */
a0d0e21e 2564{
968b3946 2565 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2566}
2567
2568/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2569/*
2570=for apidoc p||call_sv
2571
2572Performs a callback to the Perl sub whose name is in the SV. See
2573L<perlcall>.
2574
2575=cut
2576*/
2577
a0d0e21e 2578I32
864dbfa3 2579Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2580 /* See G_* flags in cop.h */
a0d0e21e 2581{
27da23d5 2582 dVAR; dSP;
a0d0e21e 2583 LOGOP myop; /* fake syntax tree node */
968b3946 2584 UNOP method_op;
aa689395 2585 I32 oldmark;
8ea43dc8 2586 VOL I32 retval = 0;
a0d0e21e 2587 I32 oldscope;
54310121 2588 bool oldcatch = CATCH_GET;
6224f72b 2589 int ret;
c4420975 2590 OP* const oldop = PL_op;
db36c5a1 2591 dJMPENV;
1e422769 2592
a0d0e21e
LW
2593 if (flags & G_DISCARD) {
2594 ENTER;
2595 SAVETMPS;
2596 }
2597
aa689395 2598 Zero(&myop, 1, LOGOP);
5f66b61c 2599 myop.op_next = NULL;
f51d4af5 2600 if (!(flags & G_NOARGS))
aa689395 2601 myop.op_flags |= OPf_STACKED;
54310121
PP
2602 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2603 (flags & G_ARRAY) ? OPf_WANT_LIST :
2604 OPf_WANT_SCALAR);
462e5cf6 2605 SAVEOP();
533c011a 2606 PL_op = (OP*)&myop;
aa689395 2607
3280af22
NIS
2608 EXTEND(PL_stack_sp, 1);
2609 *++PL_stack_sp = sv;
aa689395 2610 oldmark = TOPMARK;
3280af22 2611 oldscope = PL_scopestack_ix;
a0d0e21e 2612
3280af22 2613 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2614 /* Handle first BEGIN of -d. */
3280af22 2615 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2616 /* Try harder, since this may have been a sighandler, thus
2617 * curstash may be meaningless. */
3280af22 2618 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2619 && !(flags & G_NODEBUG))
533c011a 2620 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2621
968b3946
GS
2622 if (flags & G_METHOD) {
2623 Zero(&method_op, 1, UNOP);
2624 method_op.op_next = PL_op;
2625 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2626 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2627 PL_op = (OP*)&method_op;
968b3946
GS
2628 }
2629
312caa8e 2630 if (!(flags & G_EVAL)) {
0cdb2077 2631 CATCH_SET(TRUE);
d6f07c05 2632 CALL_BODY_SUB((OP*)&myop);
312caa8e 2633 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2634 CATCH_SET(oldcatch);
312caa8e
CS
2635 }
2636 else {
d78bda3d 2637 myop.op_other = (OP*)&myop;
3280af22 2638 PL_markstack_ptr--;
edb2152a 2639 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2640 PL_markstack_ptr++;
a0d0e21e 2641
14dd3ad8 2642 JMPENV_PUSH(ret);
edb2152a 2643
6224f72b
GS
2644 switch (ret) {
2645 case 0:
14dd3ad8 2646 redo_body:
d6f07c05 2647 CALL_BODY_SUB((OP*)&myop);
312caa8e
CS
2648 retval = PL_stack_sp - (PL_stack_base + oldmark);
2649 if (!(flags & G_KEEPERR))
c69006e4 2650 sv_setpvn(ERRSV,"",0);
a0d0e21e 2651 break;
6224f72b 2652 case 1:
f86702cc 2653 STATUS_ALL_FAILURE;
a0d0e21e 2654 /* FALL THROUGH */
6224f72b 2655 case 2:
a0d0e21e 2656 /* my_exit() was called */
3280af22 2657 PL_curstash = PL_defstash;
a0d0e21e 2658 FREETMPS;
14dd3ad8 2659 JMPENV_POP;
cc3604b1 2660 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2661 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2662 my_exit_jump();
a0d0e21e 2663 /* NOTREACHED */
6224f72b 2664 case 3:
3280af22 2665 if (PL_restartop) {
533c011a 2666 PL_op = PL_restartop;
3280af22 2667 PL_restartop = 0;
312caa8e 2668 goto redo_body;
a0d0e21e 2669 }
3280af22 2670 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2671 if (flags & G_ARRAY)
2672 retval = 0;
2673 else {
2674 retval = 1;
3280af22 2675 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2676 }
312caa8e 2677 break;
a0d0e21e 2678 }
a0d0e21e 2679
edb2152a
NC
2680 if (PL_scopestack_ix > oldscope)
2681 delete_eval_scope();
14dd3ad8 2682 JMPENV_POP;
a0d0e21e 2683 }
1e422769 2684
a0d0e21e 2685 if (flags & G_DISCARD) {
3280af22 2686 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2687 retval = 0;
2688 FREETMPS;
2689 LEAVE;
2690 }
533c011a 2691 PL_op = oldop;
a0d0e21e
LW
2692 return retval;
2693}
2694
6e72f9df 2695/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2696
954c1994
GS
2697/*
2698=for apidoc p||eval_sv
2699
2700Tells Perl to C<eval> the string in the SV.
2701
2702=cut
2703*/
2704
a0d0e21e 2705I32
864dbfa3 2706Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2707
8ac85365 2708 /* See G_* flags in cop.h */
a0d0e21e 2709{
97aff369 2710 dVAR;
924508f0 2711 dSP;
a0d0e21e 2712 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2713 VOL I32 oldmark = SP - PL_stack_base;
2714 VOL I32 retval = 0;
6224f72b 2715 int ret;
c4420975 2716 OP* const oldop = PL_op;
db36c5a1 2717 dJMPENV;
84902520 2718
4633a7c4
LW
2719 if (flags & G_DISCARD) {
2720 ENTER;
2721 SAVETMPS;
2722 }
2723
462e5cf6 2724 SAVEOP();
533c011a
NIS
2725 PL_op = (OP*)&myop;
2726 Zero(PL_op, 1, UNOP);
3280af22
NIS
2727 EXTEND(PL_stack_sp, 1);
2728 *++PL_stack_sp = sv;
79072805 2729
4633a7c4
LW
2730 if (!(flags & G_NOARGS))
2731 myop.op_flags = OPf_STACKED;
5f66b61c 2732 myop.op_next = NULL;
6e72f9df 2733 myop.op_type = OP_ENTEREVAL;
54310121
PP
2734 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2735 (flags & G_ARRAY) ? OPf_WANT_LIST :
2736 OPf_WANT_SCALAR);
6e72f9df
PP
2737 if (flags & G_KEEPERR)
2738 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2739
dedbcade
DM
2740 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2741 * before a PUSHEVAL, which corrupts the stack after a croak */
2742 TAINT_PROPER("eval_sv()");
2743
14dd3ad8 2744 JMPENV_PUSH(ret);
6224f72b
GS
2745 switch (ret) {
2746 case 0:
14dd3ad8 2747 redo_body:
d6f07c05 2748 CALL_BODY_EVAL((OP*)&myop);
312caa8e
CS
2749 retval = PL_stack_sp - (PL_stack_base + oldmark);
2750 if (!(flags & G_KEEPERR))
c69006e4 2751 sv_setpvn(ERRSV,"",0);
4633a7c4 2752 break;
6224f72b 2753 case 1:
f86702cc 2754 STATUS_ALL_FAILURE;
4633a7c4 2755 /* FALL THROUGH */
6224f72b 2756 case 2:
4633a7c4 2757 /* my_exit() was called */
3280af22 2758 PL_curstash = PL_defstash;
4633a7c4 2759 FREETMPS;
14dd3ad8 2760 JMPENV_POP;
cc3604b1 2761 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2762 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2763 my_exit_jump();
4633a7c4 2764 /* NOTREACHED */
6224f72b 2765 case 3:
3280af22 2766 if (PL_restartop) {
533c011a 2767 PL_op = PL_restartop;
3280af22 2768 PL_restartop = 0;
312caa8e 2769 goto redo_body;
4633a7c4 2770 }
3280af22 2771 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2772 if (flags & G_ARRAY)
2773 retval = 0;
2774 else {
2775 retval = 1;
3280af22 2776 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2777 }
312caa8e 2778 break;
4633a7c4
LW
2779 }
2780
14dd3ad8 2781 JMPENV_POP;
4633a7c4 2782 if (flags & G_DISCARD) {
3280af22 2783 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2784 retval = 0;
2785 FREETMPS;
2786 LEAVE;
2787 }
533c011a 2788 PL_op = oldop;
4633a7c4
LW
2789 return retval;
2790}
2791
954c1994
GS
2792/*
2793=for apidoc p||eval_pv
2794
2795Tells Perl to C<eval> the given string and return an SV* result.
2796
2797=cut
2798*/
2799
137443ea 2800SV*
864dbfa3 2801Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2802{
97aff369 2803 dVAR;
137443ea
PP
2804 dSP;
2805 SV* sv = newSVpv(p, 0);
2806
864dbfa3 2807 eval_sv(sv, G_SCALAR);
137443ea
PP
2808 SvREFCNT_dec(sv);
2809
2810 SPAGAIN;
2811 sv = POPs;
2812 PUTBACK;
2813
2d8e6c8d 2814 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2815 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2816 }
137443ea
PP
2817
2818 return sv;
2819}
2820
4633a7c4
LW
2821/* Require a module. */
2822
954c1994 2823/*
ccfc67b7
JH
2824=head1 Embedding Functions
2825
954c1994
GS
2826=for apidoc p||require_pv
2827
7d3fb230
BS
2828Tells Perl to C<require> the file named by the string argument. It is
2829analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2830implemented that way; consider using load_module instead.
954c1994 2831
7d3fb230 2832=cut */
954c1994 2833
4633a7c4 2834void
864dbfa3 2835Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2836{
97aff369 2837 dVAR;
d3acc0f7 2838 dSP;
97aff369 2839 SV* sv;
e788e7d3 2840 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2841 PUTBACK;
be41e5d9
NC
2842 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2843 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2844 SPAGAIN;
2845 POPSTACK;
79072805
LW
2846}
2847
79072805 2848void
e1ec3a88 2849Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2850{
71315bf2 2851 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2852
c4420975 2853 if (gv)
14befaf4 2854 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2855}
2856
76e3520e 2857STATIC void
e1ec3a88 2858S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2859{
ab821d7f 2860 /* This message really ought to be max 23 lines.
75c72d73 2861 * Removed -h because the user already knows that option. Others? */
fb73857a 2862
27da23d5 2863 static const char * const usage_msg[] = {
aefc56c5
SF
2864"-0[octal] specify record separator (\\0, if no argument)",
2865"-A[mod][=pattern] activate all/given assertions",
2866"-a autosplit mode with -n or -p (splits $_ into @F)",
2867"-C[number/list] enables the listed Unicode features",
2868"-c check syntax only (runs BEGIN and CHECK blocks)",
2869"-d[:debugger] run program under debugger",
2870"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2871"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2872"-E program like -e, but enables all optional features",
aefc56c5 2873"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2874"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2875"-i[extension] edit <> files in place (makes backup if extension supplied)",
2876"-Idirectory specify @INC/#include directory (several -I's allowed)",
2877"-l[octal] enable line ending processing, specifies line terminator",
2878"-[mM][-]module execute \"use/no module...\" before executing program",
2879"-n assume \"while (<>) { ... }\" loop around program",
2880"-p assume loop like -n but print line also, like sed",
2881"-P run program through C preprocessor before compilation",
2882"-s enable rudimentary parsing for switches after programfile",
2883"-S look for programfile using PATH environment variable",
2884"-t enable tainting warnings",
2885"-T enable tainting checks",
2886"-u dump core after parsing program",
2887"-U allow unsafe operations",
2888"-v print version, subversion (includes VERY IMPORTANT perl info)",
2889"-V[:variable] print configuration summary (or a single Config.pm variable)",
2890"-w enable many useful warnings (RECOMMENDED)",
2891"-W enable all warnings",
2892"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2893"-X disable all warnings",
fb73857a
PP
2894"\n",
2895NULL
2896};
27da23d5 2897 const char * const *p = usage_msg;
fb73857a 2898
b0e47665
GS
2899 PerlIO_printf(PerlIO_stdout(),
2900 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2901 name);
fb73857a 2902 while (*p)
b0e47665 2903 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2904}
2905
b4ab917c
DM
2906/* convert a string of -D options (or digits) into an int.
2907 * sets *s to point to the char after the options */
2908
2909#ifdef DEBUGGING
2910int
e1ec3a88 2911Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2912{
27da23d5 2913 static const char * const usage_msgd[] = {
e6e64d9b
JC
2914 " Debugging flag values: (see also -d)",
2915 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2916 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2917 " l Context (loop) stack processing",
2918 " t Trace execution",
2919 " o Method and overloading resolution",
2920 " c String/numeric conversions",
2921 " P Print profiling info, preprocessor command for -P, source file input state",
2922 " m Memory allocation",
2923 " f Format processing",
2924 " r Regular expression parsing and execution",
2925 " x Syntax tree dump",
3679267a 2926 " u Tainting checks",
e6e64d9b
JC
2927 " H Hash dump -- usurps values()",
2928 " X Scratchpad allocation",
2929 " D Cleaning up",
2930 " S Thread synchronization",
2931 " T Tokenising",
2932 " R Include reference counts of dumped variables (eg when using -Ds)",
2933 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2934 " v Verbose: use in conjunction with other flags",
2935 " C Copy On Write",
2936 " A Consistency checks on internal structures",
3679267a 2937 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2938 NULL
2939 };
b4ab917c
DM
2940 int i = 0;
2941 if (isALPHA(**s)) {
2942 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2943 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2944
2945 for (; isALNUM(**s); (*s)++) {
c4420975 2946 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2947 if (d)
2948 i |= 1 << (d - debopts);
2949 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2950 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2951 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2952 }
2953 }
e6e64d9b 2954 else if (isDIGIT(**s)) {
b4ab917c
DM
2955 i = atoi(*s);
2956 for (; isALNUM(**s); (*s)++) ;
2957 }
ddcf8bc1 2958 else if (givehelp) {
06e869a4 2959 const char *const *p = usage_msgd;
e6e64d9b
JC
2960 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2961 }
b4ab917c
DM
2962# ifdef EBCDIC
2963 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2964 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2965 "-Dp not implemented on this platform\n");
2966# endif
2967 return i;
2968}
2969#endif
2970
79072805
LW
2971/* This routine handles any switches that can be given during run */
2972
2973char *
97bd5664 2974Perl_moreswitches(pTHX_ char *s)
79072805 2975{
27da23d5 2976 dVAR;
84c133a0 2977 UV rschar;
79072805
LW
2978
2979 switch (*s) {
2980 case '0':
a863c7d1 2981 {
f2095865 2982 I32 flags = 0;
a3b680e6 2983 STRLEN numlen;
f2095865
JH
2984
2985 SvREFCNT_dec(PL_rs);
2986 if (s[1] == 'x' && s[2]) {
a3b680e6 2987 const char *e = s+=2;
f2095865
JH
2988 U8 *tmps;
2989
a3b680e6
AL
2990 while (*e)
2991 e++;
f2095865
JH
2992 numlen = e - s;
2993 flags = PERL_SCAN_SILENT_ILLDIGIT;
2994 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2995 if (s + numlen < e) {
2996 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2997 numlen = 0;
2998 s--;
2999 }
396482e1 3000 PL_rs = newSVpvs("");
c5661c80 3001 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3002 tmps = (U8*)SvPVX(PL_rs);
3003 uvchr_to_utf8(tmps, rschar);
3004 SvCUR_set(PL_rs, UNISKIP(rschar));
3005 SvUTF8_on(PL_rs);
3006 }
3007 else {
3008 numlen = 4;
3009 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3010 if (rschar & ~((U8)~0))
3011 PL_rs = &PL_sv_undef;
3012 else if (!rschar && numlen >= 2)
396482e1 3013 PL_rs = newSVpvs("");
f2095865
JH
3014 else {
3015 char ch = (char)rschar;
3016 PL_rs = newSVpvn(&ch, 1);
3017 }
3018 }
800633c3 3019 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3020 return s + numlen;
a863c7d1 3021 }
46487f74 3022 case 'C':
a05d7ebb 3023 s++;
dd374669 3024 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3025 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3026 PL_utf8cache = -1;
46487f74 3027 return s;
2304df62 3028 case 'F':
3280af22 3029 PL_minus_F = TRUE;
ebce5377
RGS
3030 PL_splitstr = ++s;
3031 while (*s && !isSPACE(*s)) ++s;
e49e380e 3032 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3033 return s;
79072805 3034 case 'a':
3280af22 3035 PL_minus_a = TRUE;
79072805
LW
3036 s++;
3037 return s;
3038 case 'c':
3280af22 3039 PL_minus_c = TRUE;
79072805
LW
3040 s++;
3041 return s;
3042 case 'd':
97bd5664 3043 forbid_setid('d', -1);
4633a7c4 3044 s++;
2cbb2ee1
RGS
3045
3046 /* -dt indicates to the debugger that threads will be used */
3047 if (*s == 't' && !isALNUM(s[1])) {
3048 ++s;
3049 my_setenv("PERL5DB_THREADED", "1");
3050 }
3051
70c94a19
RR
3052 /* The following permits -d:Mod to accepts arguments following an =
3053 in the fashion that -MSome::Mod does. */
3054 if (*s == ':' || *s == '=') {
06b5626a 3055 const char *start;
396482e1 3056 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3057 start = ++s;
3058 /* We now allow -d:Module=Foo,Bar */
3059 while(isALNUM(*s) || *s==':') ++s;
3060 if (*s != '=')
3061 sv_catpv(sv, start);
3062 else {
3063 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3064 /* Don't use NUL as q// delimiter here, this string goes in the
3065 * environment. */
3066 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3067 }
4633a7c4 3068 s += strlen(s);
184f32ec 3069 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3070 }
ed094faf 3071 if (!PL_perldb) {
3280af22 3072 PL_perldb = PERLDB_ALL;
a0d0e21e 3073 init_debugger();
ed094faf 3074 }
79072805
LW
3075 return s;
3076 case 'D':
0453d815 3077 {
79072805 3078#ifdef DEBUGGING
97bd5664 3079 forbid_setid('D', -1);
b4ab917c 3080 s++;
dd374669 3081 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3082#else /* !DEBUGGING */
0453d815 3083 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3084 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3085 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3086 for (s++; isALNUM(*s); s++) ;
79072805 3087#endif
79072805 3088 return s;
0453d815 3089 }
4633a7c4 3090 case 'h':
ac27b0f5 3091 usage(PL_origargv[0]);
7ca617d0 3092 my_exit(0);
79072805 3093 case 'i':
43c5f42d 3094 Safefree(PL_inplace);
c030f24b
GH
3095#if defined(__CYGWIN__) /* do backup extension automagically */
3096 if (*(s+1) == '\0') {
c86a4f2e 3097 PL_inplace = savepvs(".bak");
c030f24b
GH
3098 return s+1;
3099 }
3100#endif /* __CYGWIN__ */
5ef5d758 3101 {
d4c19fe8 3102 const char * const start = ++s;
5ef5d758
NC
3103 while (*s && !isSPACE(*s))
3104 ++s;
3105
3106 PL_inplace = savepvn(start, s - start);
3107 }
7b8d334a 3108 if (*s) {
5ef5d758 3109 ++s;
7b8d334a 3110 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3111 s++;
7b8d334a 3112 }
fb73857a 3113 return s;
4e49a025 3114 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3115 forbid_setid('I', -1);
fb73857a
PP
3116 ++s;
3117 while (*s && isSPACE(*s))
3118 ++s;
3119 if (*s) {
774d564b 3120 char *e, *p;
0df16ed7
GS
3121 p = s;
3122 /* ignore trailing spaces (possibly followed by other switches) */
3123 do {
3124 for (e = p; *e && !isSPACE(*e); e++) ;
3125 p = e;
3126 while (isSPACE(*p))
3127 p++;
3128 } while (*p && *p != '-');
3129 e = savepvn(s, e-s);
88fe16b2 3130 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3131 Safefree(e);
3132 s = p;
3133 if (*s == '-')
3134 s++;
79072805
LW
3135 }
3136 else
a67e862a 3137 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3138 return s;
79072805 3139 case 'l':
3280af22 3140 PL_minus_l = TRUE;
79072805 3141 s++;
7889fe52
NIS
3142 if (PL_ors_sv) {
3143 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3144 PL_ors_sv = NULL;
7889fe52 3145 }
79072805 3146 if (isDIGIT(*s)) {
53305cf1 3147 I32 flags = 0;
a3b680e6 3148 STRLEN numlen;
396482e1 3149 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3150 numlen = 3 + (*s == '0');
3151 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3152 s += numlen;
3153 }
3154 else {
8bfdd7d9 3155 if (RsPARA(PL_rs)) {
396482e1 3156 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3157 }
3158 else {
8bfdd7d9 3159 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3160 }
79072805
LW
3161 }
3162 return s;
06492da6 3163 case 'A':
97bd5664 3164 forbid_setid('A', -1);
930366bd
RGS
3165 if (!PL_preambleav)
3166 PL_preambleav = newAV();
aefc56c5
SF
3167 s++;
3168 {
44f8325f 3169 char * const start = s;
396482e1 3170 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3171 while(isALNUM(*s) || *s == ':') ++s;
3172 if (s != start) {
396482e1 3173 sv_catpvs(sv, "::");
aefc56c5
SF
3174 sv_catpvn(sv, start, s-start);
3175 }
3176 if (*s == '=') {
0c5a913d 3177 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3178 s+=strlen(s);
3179 }
3180 else if (*s != '\0') {
551405c4 3181 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3182 }
06492da6 3183 av_push(PL_preambleav, sv);
aefc56c5 3184 return s;
06492da6 3185 }
1a30305b 3186 case 'M':
97bd5664 3187 forbid_setid('M', -1); /* XXX ? */
1a30305b
PP
3188 /* FALL THROUGH */
3189 case 'm':
97bd5664 3190 forbid_setid('m', -1); /* XXX ? */
1a30305b 3191 if (*++s) {
a5f75d66 3192 char *start;
11343788 3193 SV *sv;
e1ec3a88 3194 const char *use = "use ";
a5f75d66 3195 /* -M-foo == 'no foo' */
d0043bd1
NC
3196 /* Leading space on " no " is deliberate, to make both
3197 possibilities the same length. */
3198 if (*s == '-') { use = " no "; ++s; }
3199 sv = newSVpvn(use,4);
a5f75d66 3200 start = s;
1a30305b 3201 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3202 while(isALNUM(*s) || *s==':') ++s;
3203 if (*s != '=') {
11343788 3204 sv_catpv(sv, start);
c07a80fd
PP
3205 if (*(start-1) == 'm') {
3206 if (*s != '\0')
cea2e8a9 3207 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3208 sv_catpvs( sv, " ()");
c07a80fd
PP
3209 }
3210 } else {
6df41af2 3211 if (s == start)
be98fb35
GS
3212 Perl_croak(aTHX_ "Module name required with -%c option",
3213 s[-1]);
11343788 3214 sv_catpvn(sv, start, s-start);
396482e1
GA
3215 sv_catpvs(sv, " split(/,/,q");
3216 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3217 sv_catpv(sv, ++s);
396482e1 3218 sv_catpvs(sv, "\0)");
c07a80fd 3219 }
1a30305b 3220 s += strlen(s);
5c831c24 3221 if (!PL_preambleav)
3280af22
NIS
3222 PL_preambleav = newAV();
3223 av_push(PL_preambleav, sv);
1a30305b
PP
3224 }
3225 else
9e81e6a1 3226 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3227 return s;
79072805 3228 case 'n':
3280af22 3229 PL_minus_n = TRUE;
79072805
LW
3230 s++;
3231 return s;
3232 case 'p':
3280af22 3233 PL_minus_p = TRUE;
79072805
LW
3234 s++;
3235 return s;
3236 case 's':
97bd5664 3237 forbid_setid('s', -1);
3280af22 3238 PL_doswitches = TRUE;
79072805
LW
3239 s++;
3240 return s;
6537fe72
MS
3241 case 't':
3242 if (!PL_tainting)
22f7c9c9 3243 TOO_LATE_FOR('t');
6537fe72
MS
3244 s++;
3245 return s;
463ee0b2 3246 case 'T':
3280af22 3247 if (!PL_tainting)
22f7c9c9 3248 TOO_LATE_FOR('T');
463ee0b2
LW
3249 s++;
3250 return s;
79072805 3251 case 'u':
bf4acbe4
GS
3252#ifdef MACOS_TRADITIONAL
3253 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3254#endif
3280af22 3255 PL_do_undump = TRUE;
79072805
LW
3256 s++;
3257 return s;
3258 case 'U':
3280af22 3259 PL_unsafe = TRUE;
79072805
LW
3260 s++;
3261 return s;
3262 case 'v':
d7aa5382 3263 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3264 upg_version(PL_patchlevel);
8e9464f1 3265#if !defined(DGUX)
b0e47665 3266 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3267 Perl_form(aTHX_ "\nThis is perl, %"SVf
3268#ifdef PERL_PATCHNUM
3269 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3270#endif
3271 " built for %s",
be2597df 3272 SVfARG(vstringify(PL_patchlevel)),
95b63a38 3273 ARCHNAME));
8e9464f1
JH
3274#else /* DGUX */
3275/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3276 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3277 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3278 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3279 PerlIO_printf(PerlIO_stdout(),
3280 Perl_form(aTHX_ " built under %s at %s %s\n",
3281 OSNAME, __DATE__, __TIME__));
3282 PerlIO_printf(PerlIO_stdout(),
3283 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3284 OSVERS));
8e9464f1
JH
3285#endif /* !DGUX */
3286
fb73857a
PP
3287#if defined(LOCAL_PATCH_COUNT)
3288 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3289 PerlIO_printf(PerlIO_stdout(),
3290 "\n(with %d registered patch%s, "
3291 "see perl -V for more detail)",
bb7a0f54 3292 LOCAL_PATCH_COUNT,
b0e47665 3293 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3294#endif
1a30305b 3295
b0e47665 3296 PerlIO_printf(PerlIO_stdout(),
34ce1597 3297 "\n\nCopyright 1987-2007, Larry Wall\n");
eae9c151
JH
3298#ifdef MACOS_TRADITIONAL
3299 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3300 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3301 "maintained by Chris Nandor\n");
eae9c151 3302#endif
79072805 3303#ifdef MSDOS
b0e47665
GS
3304 PerlIO_printf(PerlIO_stdout(),
3305 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3306#endif
3307#ifdef DJGPP
b0e47665
GS
3308 PerlIO_printf(PerlIO_stdout(),
3309 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3310 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3311#endif
79072805 3312#ifdef OS2
b0e47665
GS
3313 PerlIO_printf(PerlIO_stdout(),
3314 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3315 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3316#endif
79072805 3317#ifdef atarist
b0e47665
GS
3318 PerlIO_printf(PerlIO_stdout(),
3319 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3320#endif
a3f9223b 3321#ifdef __BEOS__
b0e47665
GS
3322 PerlIO_printf(PerlIO_stdout(),
3323 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3324#endif
1d84e8df 3325#ifdef MPE
b0e47665 3326 PerlIO_printf(PerlIO_stdout(),
e583a879 3327 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3328#endif
9d116dd7 3329#ifdef OEMVS
b0e47665
GS
3330 PerlIO_printf(PerlIO_stdout(),
3331 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3332#endif
495c5fdc 3333#ifdef __VOS__
b0e47665 3334 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3335 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3336#endif
092bebab 3337#ifdef __OPEN_VM
b0e47665
GS
3338 PerlIO_printf(PerlIO_stdout(),
3339 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3340#endif
a1a0e61e 3341#ifdef POSIX_BC
b0e47665
GS
3342 PerlIO_printf(PerlIO_stdout(),
3343 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3344#endif
61ae2fbf 3345#ifdef __MINT__
b0e47665
GS
3346 PerlIO_printf(PerlIO_stdout(),
3347 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3348#endif
f83d2536 3349#ifdef EPOC
b0e47665 3350 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3351 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3352#endif
e1caacb4 3353#ifdef UNDER_CE
b475b3e6
JH
3354 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3355 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3356 wce_hitreturn();
3357#endif
a0fd4948 3358#ifdef __SYMBIAN32__
27da23d5
JH
3359 PerlIO_printf(PerlIO_stdout(),
3360 "Symbian port by Nokia, 2004-2005\n");
3361#endif
baed7233
DL
3362#ifdef BINARY_BUILD_NOTICE
3363 BINARY_BUILD_NOTICE;
3364#endif
b0e47665
GS
3365 PerlIO_printf(PerlIO_stdout(),
3366 "\n\
79072805 3367Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3368GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3369Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3370this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3371Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3372 my_exit(0);
79072805 3373 case 'w':
b2e5e6ba 3374 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3375 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3376 }
599cee73
PM
3377 s++;
3378 return s;
3379 case 'W':
ac27b0f5 3380 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3381 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3382 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3383 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3384 s++;
3385 return s;
3386 case 'X':
ac27b0f5 3387 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3388 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3389 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3390 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3391 s++;
3392 return s;
a0d0e21e 3393 case '*':
79072805
LW
3394 case ' ':
3395 if (s[1] == '-') /* Additional switches on #! line. */
3396 return s+2;
3397 break;
a0d0e21e 3398 case '-':
79072805 3399 case 0:
51882d45 3400#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3401 case '\r':
3402#endif
79072805
LW
3403 case '\n':
3404 case '\t':
3405 break;
aa689395
PP
3406#ifdef ALTERNATE_SHEBANG
3407 case 'S': /* OS/2 needs -S on "extproc" line. */
3408 break;
3409#endif
a0d0e21e 3410 case 'P':
3280af22 3411 if (PL_preprocess)
a0d0e21e
LW
3412 return s+1;
3413 /* FALL THROUGH */
79072805 3414 default:
cea2e8a9 3415 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3416 }
bd61b366 3417 return NULL;
79072805
LW
3418}
3419
3420/* compliments of Tom Christiansen */
3421
3422/* unexec() can be found in the Gnu emacs distribution */
ee580363 3423/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3424
3425void
864dbfa3 3426Perl_my_unexec(pTHX)
79072805 3427{
b37c2d43 3428 PERL_UNUSED_CONTEXT;
79072805 3429#ifdef UNEXEC
b37c2d43
AL
3430 SV * prog = newSVpv(BIN_EXP, 0);
3431 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3432 int status = 1;
79072805
LW
3433 extern int etext;
3434
396482e1 3435 sv_catpvs(prog, "/perl");
396482e1 3436 sv_catpvs(file, ".perldump");
79072805 3437
ee580363
GS
3438 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3439 /* unexec prints msg to stderr in case of failure */
6ad3d225 3440 PerlProc_exit(status);
79072805 3441#else
a5f75d66
AD
3442# ifdef VMS
3443# include <lib$routines.h>
3444 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3445# elif defined(WIN32) || defined(__CYGWIN__)
3446 Perl_croak(aTHX_ "dump is not supported");
aa689395 3447# else
79072805 3448 ABORT(); /* for use with undump */
aa689395 3449# endif
a5f75d66 3450#endif
79072805
LW
3451}
3452
cb68f92d
GS
3453/* initialize curinterp */
3454STATIC void
cea2e8a9 3455S_init_interp(pTHX)
cb68f92d 3456{
97aff369 3457 dVAR;
acfe0abc
GS
3458#ifdef MULTIPLICITY
3459# define PERLVAR(var,type)
3460# define PERLVARA(var,n,type)
3461# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3462# define PERLVARI(var,type,init) aTHX->var = init;
3463# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3464# else
acfe0abc
GS
3465# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3466# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3467# endif
acfe0abc 3468# include "intrpvar.h"
b7f7fff6 3469# include "thrdvar.h"
acfe0abc
GS
3470# undef PERLVAR
3471# undef PERLVARA
3472# undef PERLVARI
3473# undef PERLVARIC
3474#else
3475# define PERLVAR(var,type)
3476# define PERLVARA(var,n,type)
3477# define PERLVARI(var,type,init) PL_##var = init;
3478# define PERLVARIC(var,type,init) PL_##var = init;
3479# include "intrpvar.h"
b7f7fff6 3480# include "thrdvar.h"
acfe0abc
GS
3481# undef PERLVAR
3482# undef PERLVARA
3483# undef PERLVARI
3484# undef PERLVARIC
cb68f92d
GS
3485#endif
3486
46ab3289
NC
3487 /* As these are inside a structure, PERLVARI isn't capable of initialising
3488 them */
6c3f0a89
NC
3489 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3490 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3491}
3492
76e3520e 3493STATIC void
cea2e8a9 3494S_init_main_stash(pTHX)
79072805 3495{
97aff369 3496 dVAR;
463ee0b2 3497 GV *gv;
6e72f9df 3498
3280af22 3499 PL_curstash = PL_defstash = newHV();
23579a14
NC
3500 /* We know that the string "main" will be in the global shared string
3501 table, so it's a small saving to use it rather than allocate another
3502 8 bytes. */