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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
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85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
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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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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
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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)
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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,
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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/*
ccfc67b7
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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);
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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);
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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
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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
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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 */
c301d606 583 PL_veto_cleanup = TRUE;
37038d91 584 return STATUS_EXIT;
62375a60
NIS
585 }
586
2aa47728
NC
587#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
588 if (destruct_level != 0) {
589 /* Fork here to create a child. Our child's job is to preserve the
590 state of scalars prior to destruction, so that we can instruct it
591 to dump any scalars that we later find have leaked.
592 There's no subtlety in this code - it assumes POSIX, and it doesn't
593 fail gracefully */
594 int fd[2];
595
596 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
597 perror("Debug leaking scalars socketpair failed");
598 abort();
599 }
600
601 child = fork();
602 if(child == -1) {
603 perror("Debug leaking scalars fork failed");
604 abort();
605 }
606 if (!child) {
607 /* We are the child */
3125a5a4
NC
608 const int sock = fd[1];
609 const int debug_fd = PerlIO_fileno(Perl_debug_log);
610 int f;
808ad2d0
NC
611 const char *where;
612 /* Our success message is an integer 0, and a char 0 */
613 static const char success[sizeof(int) + 1];
3125a5a4 614
2aa47728 615 close(fd[0]);
2aa47728 616
3125a5a4
NC
617 /* We need to close all other file descriptors otherwise we end up
618 with interesting hangs, where the parent closes its end of a
619 pipe, and sits waiting for (another) child to terminate. Only
620 that child never terminates, because it never gets EOF, because
bf357333
NC
621 we also have the far end of the pipe open. We even need to
622 close the debugging fd, because sometimes it happens to be one
623 end of a pipe, and a process is waiting on the other end for
624 EOF. Normally it would be closed at some point earlier in
625 destruction, but if we happen to cause the pipe to remain open,
626 EOF never occurs, and we get an infinite hang. Hence all the
627 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
628
629 f = sysconf(_SC_OPEN_MAX);
630 if(f < 0) {
808ad2d0
NC
631 where = "sysconf failed";
632 goto abort;
3125a5a4
NC
633 }
634 while (f--) {
635 if (f == sock)
636 continue;
3125a5a4
NC
637 close(f);
638 }
639
2aa47728
NC
640 while (1) {
641 SV *target;
bf357333
NC
642 union control_un control;
643 struct msghdr msg;
644 struct iovec vec[1];
645 struct cmsghdr *cmptr;
646 ssize_t got;
647 int got_fd;
648
649 msg.msg_control = control.control;
650 msg.msg_controllen = sizeof(control.control);
651 /* We're a connected socket so we don't need a source */
652 msg.msg_name = NULL;
653 msg.msg_namelen = 0;
654 msg.msg_iov = vec;
655 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
656
657 vec[0].iov_base = (void*)&target;
658 vec[0].iov_len = sizeof(target);
659
660 got = recvmsg(sock, &msg, 0);
2aa47728
NC
661
662 if(got == 0)
663 break;
664 if(got < 0) {
808ad2d0
NC
665 where = "recv failed";
666 goto abort;
2aa47728
NC
667 }
668 if(got < sizeof(target)) {
808ad2d0
NC
669 where = "short recv";
670 goto abort;
2aa47728 671 }
bf357333 672
808ad2d0
NC
673 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
674 where = "no cmsg";
675 goto abort;
676 }
677 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
678 where = "wrong cmsg_len";
679 goto abort;
680 }
681 if(cmptr->cmsg_level != SOL_SOCKET) {
682 where = "wrong cmsg_level";
683 goto abort;
684 }
685 if(cmptr->cmsg_type != SCM_RIGHTS) {
686 where = "wrong cmsg_type";
687 goto abort;
688 }
bf357333
NC
689
690 got_fd = *(int*)CMSG_DATA(cmptr);
691 /* For our last little bit of trickery, put the file descriptor
692 back into Perl_debug_log, as if we never actually closed it
693 */
808ad2d0
NC
694 if(got_fd != debug_fd) {
695 if (dup2(got_fd, debug_fd) == -1) {
696 where = "dup2";
697 goto abort;
698 }
699 }
2aa47728 700 sv_dump(target);
bf357333 701
2aa47728
NC
702 PerlIO_flush(Perl_debug_log);
703
808ad2d0 704 got = write(sock, &success, sizeof(success));
2aa47728
NC
705
706 if(got < 0) {
808ad2d0
NC
707 where = "write failed";
708 goto abort;
2aa47728 709 }
808ad2d0
NC
710 if(got < sizeof(success)) {
711 where = "short write";
712 goto abort;
2aa47728
NC
713 }
714 }
715 _exit(0);
808ad2d0
NC
716 abort:
717 {
718 int send_errno = errno;
719 unsigned char length = (unsigned char) strlen(where);
720 struct iovec failure[3] = {
721 {(void*)&send_errno, sizeof(send_errno)},
722 {&length, 1},
723 {(void*)where, length}
724 };
725 int got = writev(sock, failure, 3);
726 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
727 in the parent if we try to read from the socketpair after the
728 child has exited, even if there was data to read.
729 So sleep a bit to give the parent a fighting chance of
730 reading the data. */
731 sleep(2);
732 _exit((got == -1) ? errno : 0);
733 }
bf357333 734 /* End of child. */
2aa47728 735 }
41e4abd8 736 PL_dumper_fd = fd[0];
2aa47728
NC
737 close(fd[1]);
738 }
739#endif
740
ff0cee69
PP
741 /* We must account for everything. */
742
743 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
744 /* Do this now, because destroying ops can cause new SVs to be generated
745 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
746 PL_curcop to point to a valid op from which the filename structure
747 member is copied. */
748 PL_curcop = &PL_compiling;
3280af22 749 if (PL_main_root) {
4e380990
DM
750 /* ensure comppad/curpad to refer to main's pad */
751 if (CvPADLIST(PL_main_cv)) {
752 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
753 }
3280af22 754 op_free(PL_main_root);
5f66b61c 755 PL_main_root = NULL;
a0d0e21e 756 }
5f66b61c 757 PL_main_start = NULL;
3280af22 758 SvREFCNT_dec(PL_main_cv);
601f1833 759 PL_main_cv = NULL;
24d3c518 760 PL_dirty = TRUE;
ff0cee69 761
13621cfb
NIS
762 /* Tell PerlIO we are about to tear things apart in case
763 we have layers which are using resources that should
764 be cleaned up now.
765 */
766
767 PerlIO_destruct(aTHX);
768
3280af22 769 if (PL_sv_objcount) {
a0d0e21e
LW
770 /*
771 * Try to destruct global references. We do this first so that the
772 * destructors and destructees still exist. Some sv's might remain.
773 * Non-referenced objects are on their own.
774 */
a0d0e21e 775 sv_clean_objs();
bf9cdc68 776 PL_sv_objcount = 0;
a0de6cf5 777 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 778 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
779 }
780
5cd24f17 781 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 782 SvREFCNT_dec(PL_warnhook);
a0714e2c 783 PL_warnhook = NULL;
3280af22 784 SvREFCNT_dec(PL_diehook);
a0714e2c 785 PL_diehook = NULL;
5cd24f17 786
4b556e6c 787 /* call exit list functions */
3280af22 788 while (PL_exitlistlen-- > 0)
acfe0abc 789 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 790
3280af22 791 Safefree(PL_exitlist);
4b556e6c 792
1c4916e5
CB
793 PL_exitlist = NULL;
794 PL_exitlistlen = 0;
795
551a8b83 796 /* jettison our possibly duplicated environment */
4b647fb0
DM
797 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
798 * so we certainly shouldn't free it here
799 */
2f42fcb0 800#ifndef PERL_MICRO
4b647fb0 801#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 802 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
803#ifdef USE_ITHREADS
804 /* only main thread can free environ[0] contents */
805 && PL_curinterp == aTHX
806#endif
807 )
808 {
551a8b83
JH
809 I32 i;
810
811 for (i = 0; environ[i]; i++)
4b420006 812 safesysfree(environ[i]);
0631ea03 813
4b420006
JH
814 /* Must use safesysfree() when working with environ. */
815 safesysfree(environ);
551a8b83
JH
816
817 environ = PL_origenviron;
818 }
819#endif
2f42fcb0 820#endif /* !PERL_MICRO */
551a8b83 821
30985c42
JH
822 if (destruct_level == 0) {
823
824 DEBUG_P(debprofdump());
825
826#if defined(PERLIO_LAYERS)
827 /* No more IO - including error messages ! */
828 PerlIO_cleanup(aTHX);
829#endif
830
831 CopFILE_free(&PL_compiling);
832 CopSTASH_free(&PL_compiling);
833
834 /* The exit() function will do everything that needs doing. */
835 return STATUS_EXIT;
836 }
837
804ffa60 838 /* reset so print() ends up where we expect */
a0714e2c 839 setdefout(NULL);
804ffa60 840
5f8cb046
DM
841#ifdef USE_ITHREADS
842 /* the syntax tree is shared between clones
843 * so op_free(PL_main_root) only ReREFCNT_dec's
844 * REGEXPs in the parent interpreter
845 * we need to manually ReREFCNT_dec for the clones
846 */
847 {
848 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 849 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
850
851 while (i) {
c4420975 852 SV * const resv = ary[--i];
35061a7e
DM
853
854 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 855 /* this is PL_reg_curpm, already freed
35061a7e
DM
856 * flag is set in regexec.c:S_regtry
857 */
858 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 859 }
1cc8b4c5
AB
860 else if(SvREPADTMP(resv)) {
861 SvREPADTMP_off(resv);
862 }
a560f29b
NC
863 else if(SvIOKp(resv)) {
864 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
865 ReREFCNT_dec(re);
866 }
867 }
868 }
869 SvREFCNT_dec(PL_regex_padav);
7d49f689 870 PL_regex_padav = NULL;
5f8cb046
DM
871 PL_regex_pad = NULL;
872#endif
873
081fc587
AB
874 SvREFCNT_dec((SV*) PL_stashcache);
875 PL_stashcache = NULL;
876
5f05dabc
PP
877 /* loosen bonds of global variables */
878
3280af22
NIS
879 if(PL_rsfp) {
880 (void)PerlIO_close(PL_rsfp);
4608196e 881 PL_rsfp = NULL;
8ebc5c01
PP
882 }
883
884 /* Filters for program text */
3280af22 885 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 886 PL_rsfp_filters = NULL;
8ebc5c01 887
84386e14
RGS
888 if (PL_minus_F) {
889 Safefree(PL_splitstr);
890 PL_splitstr = NULL;
891 }
892
8ebc5c01 893 /* switches */
3280af22
NIS
894 PL_preprocess = FALSE;
895 PL_minus_n = FALSE;
896 PL_minus_p = FALSE;
897 PL_minus_l = FALSE;
898 PL_minus_a = FALSE;
899 PL_minus_F = FALSE;
900 PL_doswitches = FALSE;
599cee73 901 PL_dowarn = G_WARN_OFF;
3280af22
NIS
902 PL_doextract = FALSE;
903 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
904 PL_unsafe = FALSE;
905
906 Safefree(PL_inplace);
bd61b366 907 PL_inplace = NULL;
a7cb1f99 908 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
909
910 if (PL_e_script) {
911 SvREFCNT_dec(PL_e_script);
a0714e2c 912 PL_e_script = NULL;
8ebc5c01
PP
913 }
914
bf9cdc68
RG
915 PL_perldb = 0;
916
8ebc5c01
PP
917 /* magical thingies */
918
7889fe52 919 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 920 PL_ofs_sv = NULL;
5f05dabc 921
7889fe52 922 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 923 PL_ors_sv = NULL;
8ebc5c01 924
3280af22 925 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 926 PL_rs = NULL;
dc92893f 927
d33b2eba 928 Safefree(PL_osname); /* $^O */
bd61b366 929 PL_osname = NULL;
5f05dabc 930
3280af22 931 SvREFCNT_dec(PL_statname);
a0714e2c
SS
932 PL_statname = NULL;
933 PL_statgv = NULL;
5f05dabc 934
8ebc5c01
PP
935 /* defgv, aka *_ should be taken care of elsewhere */
936
8ebc5c01 937 /* clean up after study() */
3280af22 938 SvREFCNT_dec(PL_lastscream);
a0714e2c 939 PL_lastscream = NULL;
3280af22
NIS
940 Safefree(PL_screamfirst);
941 PL_screamfirst = 0;
942 Safefree(PL_screamnext);
943 PL_screamnext = 0;
8ebc5c01 944
7d5ea4e7
GS
945 /* float buffer */
946 Safefree(PL_efloatbuf);
bd61b366 947 PL_efloatbuf = NULL;
7d5ea4e7
GS
948 PL_efloatsize = 0;
949
8ebc5c01 950 /* startup and shutdown function lists */
3280af22 951 SvREFCNT_dec(PL_beginav);
5a837c8f 952 SvREFCNT_dec(PL_beginav_save);
3280af22 953 SvREFCNT_dec(PL_endav);
7d30b5c4 954 SvREFCNT_dec(PL_checkav);
ece599bd 955 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
956 SvREFCNT_dec(PL_unitcheckav);
957 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 958 SvREFCNT_dec(PL_initav);
7d49f689
NC
959 PL_beginav = NULL;
960 PL_beginav_save = NULL;
961 PL_endav = NULL;
962 PL_checkav = NULL;
963 PL_checkav_save = NULL;
3c10abe3
AG
964 PL_unitcheckav = NULL;
965 PL_unitcheckav_save = NULL;
7d49f689 966 PL_initav = NULL;
5618dfe8 967
8ebc5c01 968 /* shortcuts just get cleared */
a0714e2c
SS
969 PL_envgv = NULL;
970 PL_incgv = NULL;
971 PL_hintgv = NULL;
972 PL_errgv = NULL;
973 PL_argvgv = NULL;
974 PL_argvoutgv = NULL;
975 PL_stdingv = NULL;
976 PL_stderrgv = NULL;
977 PL_last_in_gv = NULL;
978 PL_replgv = NULL;
979 PL_DBgv = NULL;
980 PL_DBline = NULL;
981 PL_DBsub = NULL;
982 PL_DBsingle = NULL;
983 PL_DBtrace = NULL;
984 PL_DBsignal = NULL;
985 PL_DBassertion = NULL;
601f1833 986 PL_DBcv = NULL;
7d49f689 987 PL_dbargs = NULL;
5c284bb0 988 PL_debstash = NULL;
8ebc5c01 989
7a1c5554 990 SvREFCNT_dec(PL_argvout_stack);
7d49f689 991 PL_argvout_stack = NULL;
8ebc5c01 992
5c831c24 993 SvREFCNT_dec(PL_modglobal);
5c284bb0 994 PL_modglobal = NULL;
5c831c24 995 SvREFCNT_dec(PL_preambleav);
7d49f689 996 PL_preambleav = NULL;
5c831c24 997 SvREFCNT_dec(PL_subname);
a0714e2c 998 PL_subname = NULL;
5c831c24 999 SvREFCNT_dec(PL_linestr);
a0714e2c 1000 PL_linestr = NULL;
ca0c25f6 1001#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1002 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1003 PL_pidstatus = NULL;
ca0c25f6 1004#endif
5c831c24 1005 SvREFCNT_dec(PL_toptarget);
a0714e2c 1006 PL_toptarget = NULL;
5c831c24 1007 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1008 PL_bodytarget = NULL;
1009 PL_formtarget = NULL;
5c831c24 1010
d33b2eba 1011 /* free locale stuff */
b9582b6a 1012#ifdef USE_LOCALE_COLLATE
d33b2eba 1013 Safefree(PL_collation_name);
bd61b366 1014 PL_collation_name = NULL;
b9582b6a 1015#endif
d33b2eba 1016
b9582b6a 1017#ifdef USE_LOCALE_NUMERIC
d33b2eba 1018 Safefree(PL_numeric_name);
bd61b366 1019 PL_numeric_name = NULL;
a453c169 1020 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1021 PL_numeric_radix_sv = NULL;
b9582b6a 1022#endif
d33b2eba 1023
5c831c24
GS
1024 /* clear utf8 character classes */
1025 SvREFCNT_dec(PL_utf8_alnum);
1026 SvREFCNT_dec(PL_utf8_alnumc);
1027 SvREFCNT_dec(PL_utf8_ascii);
1028 SvREFCNT_dec(PL_utf8_alpha);
1029 SvREFCNT_dec(PL_utf8_space);
1030 SvREFCNT_dec(PL_utf8_cntrl);
1031 SvREFCNT_dec(PL_utf8_graph);
1032 SvREFCNT_dec(PL_utf8_digit);
1033 SvREFCNT_dec(PL_utf8_upper);
1034 SvREFCNT_dec(PL_utf8_lower);
1035 SvREFCNT_dec(PL_utf8_print);
1036 SvREFCNT_dec(PL_utf8_punct);
1037 SvREFCNT_dec(PL_utf8_xdigit);
1038 SvREFCNT_dec(PL_utf8_mark);
1039 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1040 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1041 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1042 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1043 SvREFCNT_dec(PL_utf8_idstart);
1044 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1045 PL_utf8_alnum = NULL;
1046 PL_utf8_alnumc = NULL;
1047 PL_utf8_ascii = NULL;
1048 PL_utf8_alpha = NULL;
1049 PL_utf8_space = NULL;
1050 PL_utf8_cntrl = NULL;
1051 PL_utf8_graph = NULL;
1052 PL_utf8_digit = NULL;
1053 PL_utf8_upper = NULL;
1054 PL_utf8_lower = NULL;
1055 PL_utf8_print = NULL;
1056 PL_utf8_punct = NULL;
1057 PL_utf8_xdigit = NULL;
1058 PL_utf8_mark = NULL;
1059 PL_utf8_toupper = NULL;
1060 PL_utf8_totitle = NULL;
1061 PL_utf8_tolower = NULL;
1062 PL_utf8_tofold = NULL;
1063 PL_utf8_idstart = NULL;
1064 PL_utf8_idcont = NULL;
5c831c24 1065
971a9dd3 1066 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1067 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1068 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1069 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1070 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1071 CopFILE_free(&PL_compiling);
1072 CopSTASH_free(&PL_compiling);
5c831c24 1073
a0d0e21e 1074 /* Prepare to destruct main symbol table. */
5f05dabc 1075
3280af22
NIS
1076 hv = PL_defstash;
1077 PL_defstash = 0;
a0d0e21e 1078 SvREFCNT_dec(hv);
5c831c24 1079 SvREFCNT_dec(PL_curstname);
a0714e2c 1080 PL_curstname = NULL;
a0d0e21e 1081
5a844595
GS
1082 /* clear queued errors */
1083 SvREFCNT_dec(PL_errors);
a0714e2c 1084 PL_errors = NULL;
5a844595 1085
a0d0e21e 1086 FREETMPS;
0453d815 1087 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1088 if (PL_scopestack_ix != 0)
9014280d 1089 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1090 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1091 (long)PL_scopestack_ix);
1092 if (PL_savestack_ix != 0)
9014280d 1093 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1094 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1095 (long)PL_savestack_ix);
1096 if (PL_tmps_floor != -1)
9014280d 1097 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1098 (long)PL_tmps_floor + 1);
a0d0e21e 1099 if (cxstack_ix != -1)
9014280d 1100 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1101 (long)cxstack_ix + 1);
a0d0e21e 1102 }
8990e307
LW
1103
1104 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1105 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1106 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1107
1108 /* the 2 is for PL_fdpid and PL_strtab */
1109 while (PL_sv_count > 2 && sv_clean_all())
1110 ;
1111
d33b2eba
GS
1112 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1113 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1114 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1115 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1116
d4777f27
GS
1117 AvREAL_off(PL_fdpid); /* no surviving entries */
1118 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1119 PL_fdpid = NULL;
d33b2eba 1120
6c644e78
GS
1121#ifdef HAVE_INTERP_INTERN
1122 sys_intern_clear();
1123#endif
1124
6e72f9df
PP
1125 /* Destruct the global string table. */
1126 {
1127 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1128 * so that sv_free() won't fail on them.
80459961
NC
1129 * Now that the global string table is using a single hunk of memory
1130 * for both HE and HEK, we either need to explicitly unshare it the
1131 * correct way, or actually free things here.
6e72f9df 1132 */
80459961
NC
1133 I32 riter = 0;
1134 const I32 max = HvMAX(PL_strtab);
c4420975 1135 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1136 HE *hent = array[0];
1137
6e72f9df 1138 for (;;) {
0453d815 1139 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1140 HE * const next = HeNEXT(hent);
9014280d 1141 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1142 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1143 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1144 Safefree(hent);
1145 hent = next;
6e72f9df
PP
1146 }
1147 if (!hent) {
1148 if (++riter > max)
1149 break;
1150 hent = array[riter];
1151 }
1152 }
80459961
NC
1153
1154 Safefree(array);
1155 HvARRAY(PL_strtab) = 0;
1156 HvTOTALKEYS(PL_strtab) = 0;
1157 HvFILL(PL_strtab) = 0;
6e72f9df 1158 }
3280af22 1159 SvREFCNT_dec(PL_strtab);
6e72f9df 1160
e652bb2f 1161#ifdef USE_ITHREADS
c21d1a0f 1162 /* free the pointer tables used for cloning */
a0739874 1163 ptr_table_free(PL_ptr_table);
bf9cdc68 1164 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1165#endif
a0739874 1166
d33b2eba
GS
1167 /* free special SVs */
1168
1169 SvREFCNT(&PL_sv_yes) = 0;
1170 sv_clear(&PL_sv_yes);
1171 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1172 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1173
1174 SvREFCNT(&PL_sv_no) = 0;
1175 sv_clear(&PL_sv_no);
1176 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1177 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1178
9f375a43
DM
1179 {
1180 int i;
1181 for (i=0; i<=2; i++) {
1182 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1183 sv_clear(PERL_DEBUG_PAD(i));
1184 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1185 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1186 }
1187 }
1188
0453d815 1189 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1190 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1191
eba0f806
DM
1192#ifdef DEBUG_LEAKING_SCALARS
1193 if (PL_sv_count != 0) {
1194 SV* sva;
1195 SV* sv;
1196 register SV* svend;
1197
1198 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1199 svend = &sva[SvREFCNT(sva)];
1200 for (sv = sva + 1; sv < svend; ++sv) {
1201 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1202 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1203 " flags=0x%"UVxf
fd0854ff
DM
1204 " refcnt=%"UVuf pTHX__FORMAT "\n"
1205 "\tallocated at %s:%d %s %s%s\n",
6c9570dc 1206 (void*)sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
fd0854ff
DM
1207 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1208 sv->sv_debug_line,
1209 sv->sv_debug_inpad ? "for" : "by",
1210 sv->sv_debug_optype ?
1211 PL_op_name[sv->sv_debug_optype]: "(none)",
1212 sv->sv_debug_cloned ? " (cloned)" : ""
1213 );
2aa47728 1214#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1215 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1216#endif
eba0f806
DM
1217 }
1218 }
1219 }
1220 }
2aa47728
NC
1221#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1222 {
1223 int status;
1224 fd_set rset;
1225 /* Wait for up to 4 seconds for child to terminate.
1226 This seems to be the least effort way of timing out on reaping
1227 its exit status. */
1228 struct timeval waitfor = {4, 0};
41e4abd8 1229 int sock = PL_dumper_fd;
2aa47728
NC
1230
1231 shutdown(sock, 1);
1232 FD_ZERO(&rset);
1233 FD_SET(sock, &rset);
1234 select(sock + 1, &rset, NULL, NULL, &waitfor);
1235 waitpid(child, &status, WNOHANG);
1236 close(sock);
1237 }
1238#endif
eba0f806 1239#endif
bf9cdc68 1240 PL_sv_count = 0;
eba0f806
DM
1241
1242
56a2bab7 1243#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1244 /* No more IO - including error messages ! */
1245 PerlIO_cleanup(aTHX);
1246#endif
1247
9f4bd222 1248 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1249 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1250 for no arg - and will try and SvREFCNT_dec it.
1251 */
1252 SvREFCNT(&PL_sv_undef) = 0;
1253 SvREADONLY_off(&PL_sv_undef);
1254
3280af22 1255 Safefree(PL_origfilename);
bd61b366 1256 PL_origfilename = NULL;
3280af22 1257 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1258 PL_reg_start_tmp = (char**)NULL;
1259 PL_reg_start_tmpl = 0;
43c5f42d 1260 Safefree(PL_reg_curpm);
82ba1be6 1261 Safefree(PL_reg_poscache);
dd28f7bb 1262 free_tied_hv_pool();
3280af22 1263 Safefree(PL_op_mask);
cf36064f 1264 Safefree(PL_psig_ptr);
bf9cdc68 1265 PL_psig_ptr = (SV**)NULL;
cf36064f 1266 Safefree(PL_psig_name);
bf9cdc68 1267 PL_psig_name = (SV**)NULL;
2c2666fc 1268 Safefree(PL_bitcount);
bd61b366 1269 PL_bitcount = NULL;
ce08f86c 1270 Safefree(PL_psig_pend);
bf9cdc68 1271 PL_psig_pend = (int*)NULL;
a0714e2c 1272 PL_formfeed = NULL;
6e72f9df 1273 nuke_stacks();
bf9cdc68
RG
1274 PL_tainting = FALSE;
1275 PL_taint_warn = FALSE;
3280af22 1276 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1277 PL_debug = 0;
ac27b0f5 1278
a0d0e21e 1279 DEBUG_P(debprofdump());
d33b2eba 1280
e5dd39fc 1281#ifdef USE_REENTRANT_API
10bc17b6 1282 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1283#endif
1284
612f20c3
GS
1285 sv_free_arenas();
1286
5d9a96ca
DM
1287 while (PL_regmatch_slab) {
1288 regmatch_slab *s = PL_regmatch_slab;
1289 PL_regmatch_slab = PL_regmatch_slab->next;
1290 Safefree(s);
1291 }
1292
fc36a67e
PP
1293 /* As the absolutely last thing, free the non-arena SV for mess() */
1294
3280af22 1295 if (PL_mess_sv) {
f350b448
NC
1296 /* we know that type == SVt_PVMG */
1297
9c63abab 1298 /* it could have accumulated taint magic */
f350b448
NC
1299 MAGIC* mg;
1300 MAGIC* moremagic;
1301 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1302 moremagic = mg->mg_moremagic;
1303 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1304 && mg->mg_len >= 0)
1305 Safefree(mg->mg_ptr);
1306 Safefree(mg);
9c63abab 1307 }
f350b448 1308
fc36a67e 1309 /* we know that type >= SVt_PV */
8bd4d4c5 1310 SvPV_free(PL_mess_sv);
3280af22
NIS
1311 Safefree(SvANY(PL_mess_sv));
1312 Safefree(PL_mess_sv);
a0714e2c 1313 PL_mess_sv = NULL;
fc36a67e 1314 }
37038d91 1315 return STATUS_EXIT;
79072805
LW
1316}
1317
954c1994
GS
1318/*
1319=for apidoc perl_free
1320
1321Releases a Perl interpreter. See L<perlembed>.
1322
1323=cut
1324*/
1325
79072805 1326void
0cb96387 1327perl_free(pTHXx)
79072805 1328{
c301d606
DM
1329 if (PL_veto_cleanup)
1330 return;
1331
7cb608b5 1332#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1333 {
1334 /*
1335 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1336 * value as we're probably hunting memory leaks then
1337 */
1338 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1339 if (!s || atoi(s) == 0) {
1340 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1341 thread at thread exit. */
1342 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1343 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1344 }
1345 }
7cb608b5
NC
1346#endif
1347
acfe0abc 1348#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1349# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1350 {
acfe0abc 1351# ifdef NETWARE
7af12a34 1352 void *host = nw_internal_host;
acfe0abc 1353# else
7af12a34 1354 void *host = w32_internal_host;
acfe0abc 1355# endif
7af12a34 1356 PerlMem_free(aTHXx);
acfe0abc 1357# ifdef NETWARE
7af12a34 1358 nw_delete_internal_host(host);
acfe0abc 1359# else
7af12a34 1360 win32_delete_internal_host(host);
acfe0abc 1361# endif
7af12a34 1362 }
1c0ca838
GS
1363# else
1364 PerlMem_free(aTHXx);
1365# endif
acfe0abc
GS
1366#else
1367 PerlMem_free(aTHXx);
76e3520e 1368#endif
79072805
LW
1369}
1370
b7f7fff6 1371#if defined(USE_ITHREADS)
aebd1ac7
GA
1372/* provide destructors to clean up the thread key when libperl is unloaded */
1373#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1374
826955bd 1375#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1376#pragma fini "perl_fini"
666ad1ec
GA
1377#elif defined(__sun) && !defined(__GNUC__)
1378#pragma fini (perl_fini)
aebd1ac7
GA
1379#endif
1380
0dbb1585
AL
1381static void
1382#if defined(__GNUC__)
1383__attribute__((destructor))
aebd1ac7 1384#endif
de009b76 1385perl_fini(void)
aebd1ac7 1386{
27da23d5 1387 dVAR;
c301d606 1388 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1389 FREE_THREAD_KEY;
1390}
1391
1392#endif /* WIN32 */
1393#endif /* THREADS */
1394
4b556e6c 1395void
864dbfa3 1396Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1397{
97aff369 1398 dVAR;
3280af22
NIS
1399 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1400 PL_exitlist[PL_exitlistlen].fn = fn;
1401 PL_exitlist[PL_exitlistlen].ptr = ptr;
1402 ++PL_exitlistlen;
4b556e6c
JD
1403}
1404
56cf6df8
RGS
1405#ifdef HAS_PROCSELFEXE
1406/* This is a function so that we don't hold on to MAXPATHLEN
1407 bytes of stack longer than necessary
1408 */
1409STATIC void
e1ec3a88 1410S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1411{
1412 char buf[MAXPATHLEN];
1413 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1414
1415 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1416 includes a spurious NUL which will cause $^X to fail in system
1417 or backticks (this will prevent extensions from being built and
1418 many tests from working). readlink is not meant to add a NUL.
1419 Normal readlink works fine.
1420 */
1421 if (len > 0 && buf[len-1] == '\0') {
1422 len--;
1423 }
1424
1425 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1426 returning the text "unknown" from the readlink rather than the path
1427 to the executable (or returning an error from the readlink). Any valid
1428 path has a '/' in it somewhere, so use that to validate the result.
1429 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1430 */
1431 if (len > 0 && memchr(buf, '/', len)) {
1432 sv_setpvn(sv,buf,len);
1433 }
1434 else {
1435 sv_setpv(sv,arg0);
1436 }
1437}
1438#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1439
1440STATIC void
1441S_set_caret_X(pTHX) {
97aff369 1442 dVAR;
fafc274c 1443 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1444 if (tmpgv) {
1445#ifdef HAS_PROCSELFEXE
1446 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1447#else
1448#ifdef OS2
c69033f2 1449 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1450#else
c69033f2 1451 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1452#endif
1453#endif
1454 }
1455}
1456
954c1994
GS
1457/*
1458=for apidoc perl_parse
1459
1460Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1461
1462=cut
1463*/
1464
79072805 1465int
0cb96387 1466perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1467{
27da23d5 1468 dVAR;
6224f72b 1469 I32 oldscope;
6224f72b 1470 int ret;
db36c5a1 1471 dJMPENV;
8d063cd8 1472
ed6c66dd 1473 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 1474
a687059c
LW
1475#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1476#ifdef IAMSUID
1477#undef IAMSUID
cea2e8a9 1478 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1479setuid perl scripts securely.\n");
ae3f3efd 1480#endif /* IAMSUID */
a687059c
LW
1481#endif
1482
b0891165
JH
1483#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1484 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1485 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1486 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1487 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1488 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1489 if (!PL_rehash_seed_set)
1490 PL_rehash_seed = get_hash_seed();
b0891165 1491 {
9d4ba2ae 1492 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1493
1b6737cc
AL
1494 if (s && (atoi(s) == 1))
1495 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1496 }
1497#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1498
3280af22 1499 PL_origargc = argc;
e2975953 1500 PL_origargv = argv;
a0d0e21e 1501
a2722ac9
GA
1502 if (PL_origalen != 0) {
1503 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1504 }
1505 else {
3cb9023d
JH
1506 /* Set PL_origalen be the sum of the contiguous argv[]
1507 * elements plus the size of the env in case that it is
e9137a8e 1508 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1509 * as the maximum modifiable length of $0. In the worst case
1510 * the area we are able to modify is limited to the size of
43c32782 1511 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1512 * --jhi */
e1ec3a88 1513 const char *s = NULL;
54bfe034 1514 int i;
1b6737cc 1515 const UV mask =
7d8e7db3 1516 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1517 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1518 const UV aligned =
43c32782
JH
1519 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1520
1521 /* See if all the arguments are contiguous in memory. Note
1522 * that 'contiguous' is a loose term because some platforms
1523 * align the argv[] and the envp[]. If the arguments look
1524 * like non-aligned, assume that they are 'strictly' or
1525 * 'traditionally' contiguous. If the arguments look like
1526 * aligned, we just check that they are within aligned
1527 * PTRSIZE bytes. As long as no system has something bizarre
1528 * like the argv[] interleaved with some other data, we are
1529 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1530 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1531 while (*s) s++;
1532 for (i = 1; i < PL_origargc; i++) {
1533 if ((PL_origargv[i] == s + 1
43c32782 1534#ifdef OS2
c8941eeb 1535 || PL_origargv[i] == s + 2
43c32782 1536#endif
c8941eeb
JH
1537 )
1538 ||
1539 (aligned &&
1540 (PL_origargv[i] > s &&
1541 PL_origargv[i] <=
1542 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1543 )
1544 {
1545 s = PL_origargv[i];
1546 while (*s) s++;
1547 }
1548 else
1549 break;
54bfe034 1550 }
54bfe034 1551 }
3cb9023d 1552 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1553 if (s && PL_origenviron) {
9d419b5f 1554 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1555 ||
1556 (aligned &&
1557 (PL_origenviron[0] > s &&
1558 PL_origenviron[0] <=
1559 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1560 )
1561 {
9d419b5f 1562#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1563 s = PL_origenviron[0];
1564 while (*s) s++;
1565#endif
bd61b366 1566 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1567 /* Force copy of environment. */
1568 for (i = 1; PL_origenviron[i]; i++) {
1569 if (PL_origenviron[i] == s + 1
1570 ||
1571 (aligned &&
1572 (PL_origenviron[i] > s &&
1573 PL_origenviron[i] <=
1574 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1575 )
1576 {
1577 s = PL_origenviron[i];
1578 while (*s) s++;
1579 }
1580 else
1581 break;
54bfe034 1582 }
43c32782 1583 }
54bfe034 1584 }
2d2af554 1585 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1586 }
1587
3280af22 1588 if (PL_do_undump) {
a0d0e21e
LW
1589
1590 /* Come here if running an undumped a.out. */
1591
3280af22
NIS
1592 PL_origfilename = savepv(argv[0]);
1593 PL_do_undump = FALSE;
a0d0e21e 1594 cxstack_ix = -1; /* start label stack again */
748a9306 1595 init_ids();
b7975bdd
NC
1596 assert (!PL_tainted);
1597 TAINT;
1598 S_set_caret_X(aTHX);
1599 TAINT_NOT;
a0d0e21e
LW
1600 init_postdump_symbols(argc,argv,env);
1601 return 0;
1602 }
1603
3280af22 1604 if (PL_main_root) {
3280af22 1605 op_free(PL_main_root);
5f66b61c 1606 PL_main_root = NULL;
ff0cee69 1607 }
5f66b61c 1608 PL_main_start = NULL;
3280af22 1609 SvREFCNT_dec(PL_main_cv);
601f1833 1610 PL_main_cv = NULL;
79072805 1611
3280af22
NIS
1612 time(&PL_basetime);
1613 oldscope = PL_scopestack_ix;
599cee73 1614 PL_dowarn = G_WARN_OFF;
f86702cc 1615
14dd3ad8 1616 JMPENV_PUSH(ret);
6224f72b 1617 switch (ret) {
312caa8e 1618 case 0:
14dd3ad8 1619 parse_body(env,xsinit);
3c10abe3
AG
1620 if (PL_unitcheckav)
1621 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1622 if (PL_checkav)
1623 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1624 ret = 0;
1625 break;
6224f72b
GS
1626 case 1:
1627 STATUS_ALL_FAILURE;
1628 /* FALL THROUGH */
1629 case 2:
1630 /* my_exit() was called */
3280af22 1631 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1632 LEAVE;
1633 FREETMPS;
3280af22 1634 PL_curstash = PL_defstash;
3c10abe3
AG
1635 if (PL_unitcheckav)
1636 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1637 if (PL_checkav)
1638 call_list(oldscope, PL_checkav);
37038d91 1639 ret = STATUS_EXIT;
14dd3ad8 1640 break;
6224f72b 1641 case 3:
bf49b057 1642 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1643 ret = 1;
1644 break;
6224f72b 1645 }
14dd3ad8
GS
1646 JMPENV_POP;
1647 return ret;
1648}
1649
312caa8e 1650STATIC void *
14dd3ad8 1651S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1652{
27da23d5 1653 dVAR;
312caa8e 1654 int argc = PL_origargc;
8f42b153 1655 char **argv = PL_origargv;
e1ec3a88 1656 const char *scriptname = NULL;
312caa8e 1657 VOL bool dosearch = FALSE;
e1ec3a88 1658 const char *validarg = "";
312caa8e 1659 register SV *sv;
47f56822 1660 register char *s, c;
bd61b366 1661 const char *cddir = NULL;
ab019eaa 1662#ifdef USE_SITECUSTOMIZE
20ef40cf 1663 bool minus_f = FALSE;
ab019eaa 1664#endif
312caa8e 1665
3280af22 1666 sv_setpvn(PL_linestr,"",0);
396482e1 1667 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1668 SAVEFREESV(sv);
1669 init_main_stash();
54310121 1670
6224f72b
GS
1671 for (argc--,argv++; argc > 0; argc--,argv++) {
1672 if (argv[0][0] != '-' || !argv[0][1])
1673 break;
1674#ifdef DOSUID
1675 if (*validarg)
1676 validarg = " PHOOEY ";
1677 else
1678 validarg = argv[0];
ae3f3efd
PS
1679 /*
1680 * Can we rely on the kernel to start scripts with argv[1] set to
1681 * contain all #! line switches (the whole line)? (argv[0] is set to
1682 * the interpreter name, argv[2] to the script name; argv[3] and
1683 * above may contain other arguments.)
1684 */
13281fa4 1685#endif
6224f72b
GS
1686 s = argv[0]+1;
1687 reswitch:
47f56822 1688 switch ((c = *s)) {
729a02f2 1689 case 'C':
1d5472a9
GS
1690#ifndef PERL_STRICT_CR
1691 case '\r':
1692#endif
6224f72b
GS
1693 case ' ':
1694 case '0':
1695 case 'F':
1696 case 'a':
1697 case 'c':
1698 case 'd':
1699 case 'D':
1700 case 'h':
1701 case 'i':
1702 case 'l':
1703 case 'M':
1704 case 'm':
1705 case 'n':
1706 case 'p':
1707 case 's':
1708 case 'u':
1709 case 'U':
1710 case 'v':
599cee73
PM
1711 case 'W':
1712 case 'X':
6224f72b 1713 case 'w':
06492da6 1714 case 'A':
97bd5664 1715 if ((s = moreswitches(s)))
6224f72b
GS
1716 goto reswitch;
1717 break;
33b78306 1718
1dbad523 1719 case 't':
22f7c9c9 1720 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1721 if( !PL_tainting ) {
1722 PL_taint_warn = TRUE;
1723 PL_tainting = TRUE;
1724 }
1725 s++;
1726 goto reswitch;
6224f72b 1727 case 'T':
22f7c9c9 1728 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1729 PL_tainting = TRUE;
317ea90d 1730 PL_taint_warn = FALSE;
6224f72b
GS
1731 s++;
1732 goto reswitch;
f86702cc 1733
bc9b29db
RH
1734 case 'E':
1735 PL_minus_E = TRUE;
1736 /* FALL THROUGH */
6224f72b 1737 case 'e':
bf4acbe4
GS
1738#ifdef MACOS_TRADITIONAL
1739 /* ignore -e for Dev:Pseudo argument */
1740 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1741 break;
bf4acbe4 1742#endif
a52eba0e 1743 forbid_setid('e', -1);
3280af22 1744 if (!PL_e_script) {
396482e1 1745 PL_e_script = newSVpvs("");
0cb96387 1746 filter_add(read_e_script, NULL);
6224f72b
GS
1747 }
1748 if (*++s)
3280af22 1749 sv_catpv(PL_e_script, s);
6224f72b 1750 else if (argv[1]) {
3280af22 1751 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1752 argc--,argv++;
1753 }
1754 else
47f56822 1755 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1756 sv_catpvs(PL_e_script, "\n");
6224f72b 1757 break;
afe37c7d 1758
20ef40cf 1759 case 'f':
f5542d3a 1760#ifdef USE_SITECUSTOMIZE
20ef40cf 1761 minus_f = TRUE;
f5542d3a 1762#endif
20ef40cf
GA
1763 s++;
1764 goto reswitch;
1765
6224f72b 1766 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1767 forbid_setid('I', -1);
bd61b366 1768 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1769 argc--,argv++;
1770 }
6224f72b 1771 if (s && *s) {
0df16ed7 1772 STRLEN len = strlen(s);
aec46f14 1773 const char * const p = savepvn(s, len);
88fe16b2 1774 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1775 sv_catpvs(sv, "-I");
0df16ed7 1776 sv_catpvn(sv, p, len);
396482e1 1777 sv_catpvs(sv, " ");
6224f72b 1778 Safefree(p);
0df16ed7
GS
1779 }
1780 else
a67e862a 1781 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1782 break;
1783 case 'P':
a52eba0e 1784 forbid_setid('P', -1);
3280af22 1785 PL_preprocess = TRUE;
6224f72b
GS
1786 s++;
1787 goto reswitch;
1788 case 'S':
a52eba0e 1789 forbid_setid('S', -1);
6224f72b
GS
1790 dosearch = TRUE;
1791 s++;
1792 goto reswitch;
1793 case 'V':
7edfd0ef
NC
1794 {
1795 SV *opts_prog;
1796
1797 if (!PL_preambleav)
1798 PL_preambleav = newAV();
1799 av_push(PL_preambleav,
396482e1 1800 newSVpvs("use Config;"));
7edfd0ef
NC
1801 if (*++s != ':') {
1802 STRLEN opts;
1803
396482e1 1804 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1805#ifdef VMS
396482e1 1806 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1807#else
396482e1 1808 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1809#endif
7edfd0ef 1810 opts = SvCUR(opts_prog);
efcaa95b 1811
9cd7d3f2 1812 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1813# ifdef DEBUGGING
e2e4dbf1 1814 " DEBUGGING"
6224f72b 1815# endif
4f185743
NC
1816# ifdef DEBUG_LEAKING_SCALARS
1817 " DEBUG_LEAKING_SCALARS"
1818# endif
85e1fcb9 1819# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1820 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1821# endif
1822# ifdef FAKE_THREADS
e2e4dbf1 1823 " FAKE_THREADS"
85e1fcb9 1824# endif
6224f72b 1825# ifdef MULTIPLICITY
e2e4dbf1 1826 " MULTIPLICITY"
6224f72b 1827# endif
85e1fcb9 1828# ifdef MYMALLOC
e2e4dbf1 1829 " MYMALLOC"
85e1fcb9 1830# endif
3bcf5ed8
SP
1831# ifdef NO_MATHOMS
1832 " NO_MATHOMS"
1833# endif
85e1fcb9 1834# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1835 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1836# endif
1837# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1838 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1839# endif
1840# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1841 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1842# endif
1843# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1844 " PERL_IMPLICIT_SYS"
85e1fcb9 1845# endif
a724edfe
NC
1846# ifdef PERL_MAD
1847 " PERL_MAD"
1848# endif
85e1fcb9 1849# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1850 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1851# endif
1852# ifdef PERL_NEED_APPCTX
e2e4dbf1 1853 " PERL_NEED_APPCTX"
85e1fcb9
SH
1854# endif
1855# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1856 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1857# endif
1858# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1859 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1860# endif
9c0a4d5d
DM
1861# ifdef PERL_TRACK_MEMPOOL
1862 " PERL_TRACK_MEMPOOL"
1863# endif
417cd4a8
SP
1864# ifdef PERL_USE_SAFE_PUTENV
1865 " PERL_USE_SAFE_PUTENV"
1866# endif
ca0c25f6
NC
1867#ifdef PERL_USES_PL_PIDSTATUS
1868 " PERL_USES_PL_PIDSTATUS"
1869#endif
85e1fcb9 1870# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1871 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1872# endif
1873# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1874 " THREADS_HAVE_PIDS"
85e1fcb9 1875# endif
85e1fcb9 1876# ifdef USE_64_BIT_ALL
e2e4dbf1 1877 " USE_64_BIT_ALL"
ac5e8965 1878# endif
10cc9d2a 1879# ifdef USE_64_BIT_INT
e2e4dbf1 1880 " USE_64_BIT_INT"
10cc9d2a 1881# endif
85e1fcb9 1882# ifdef USE_ITHREADS
e2e4dbf1 1883 " USE_ITHREADS"
85e1fcb9
SH
1884# endif
1885# ifdef USE_LARGE_FILES
e2e4dbf1 1886 " USE_LARGE_FILES"
ac5e8965
JH
1887# endif
1888# ifdef USE_LONG_DOUBLE
e2e4dbf1 1889 " USE_LONG_DOUBLE"
ac5e8965 1890# endif
85e1fcb9 1891# ifdef USE_PERLIO
e2e4dbf1 1892 " USE_PERLIO"
53430762 1893# endif
85e1fcb9 1894# ifdef USE_REENTRANT_API
e2e4dbf1 1895 " USE_REENTRANT_API"
85e1fcb9
SH
1896# endif
1897# ifdef USE_SFIO
e2e4dbf1 1898 " USE_SFIO"
ac5e8965 1899# endif
20ef40cf 1900# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1901 " USE_SITECUSTOMIZE"
20ef40cf 1902# endif
85e1fcb9 1903# ifdef USE_SOCKS
e2e4dbf1 1904 " USE_SOCKS"
b363f7ed 1905# endif
e2e4dbf1 1906 );
efcaa95b 1907
7edfd0ef
NC
1908 while (SvCUR(opts_prog) > opts+76) {
1909 /* find last space after "options: " and before col 76
1910 */
efcaa95b 1911
7edfd0ef 1912 const char *space;
c4420975 1913 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1914 const char c = pv[opts+76];
1915 pv[opts+76] = '\0';
1916 space = strrchr(pv+opts+26, ' ');
1917 pv[opts+76] = c;
1918 if (!space) break; /* "Can't happen" */
efcaa95b 1919
7edfd0ef 1920 /* break the line before that space */
efcaa95b 1921
7edfd0ef 1922 opts = space - pv;
89529cee 1923 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1924 STR_WITH_LEN("\\n "));
7edfd0ef 1925 }
efcaa95b 1926
396482e1 1927 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1928
6224f72b 1929#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1930 if (LOCAL_PATCH_COUNT > 0) {
1931 int i;
396482e1 1932 sv_catpvs(opts_prog,
7edfd0ef
NC
1933 "\" Locally applied patches:\\n\",");
1934 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1935 if (PL_localpatches[i])
1936 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1937 0, PL_localpatches[i], 0);
1938 }
6224f72b 1939 }
6224f72b 1940#endif
7edfd0ef
NC
1941 Perl_sv_catpvf(aTHX_ opts_prog,
1942 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1943#ifdef __DATE__
1944# ifdef __TIME__
7edfd0ef
NC
1945 Perl_sv_catpvf(aTHX_ opts_prog,
1946 ",\" Compiled at %s %s\\n\"",__DATE__,
1947 __TIME__);
6224f72b 1948# else
7edfd0ef
NC
1949 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1950 __DATE__);
6224f72b
GS
1951# endif
1952#endif
396482e1 1953 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1954 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1955 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1956#ifdef __CYGWIN__
396482e1 1957 sv_catpvs(opts_prog,
7edfd0ef 1958 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1959#endif
396482e1 1960 sv_catpvs(opts_prog,
7edfd0ef
NC
1961 "print \" \\%ENV:\\n @env\\n\" if @env;"
1962 "print \" \\@INC:\\n @INC\\n\";");
1963 }
1964 else {
1965 ++s;
1966 opts_prog = Perl_newSVpvf(aTHX_
1967 "Config::config_vars(qw%c%s%c)",
1968 0, s, 0);
1969 s += strlen(s);
1970 }
1971 av_push(PL_preambleav, opts_prog);
1972 /* don't look for script or read stdin */
1973 scriptname = BIT_BUCKET;
1974 goto reswitch;
6224f72b 1975 }
6224f72b 1976 case 'x':
3280af22 1977 PL_doextract = TRUE;
6224f72b
GS
1978 s++;
1979 if (*s)
f4c556ac 1980 cddir = s;
6224f72b
GS
1981 break;
1982 case 0:
1983 break;
1984 case '-':
1985 if (!*++s || isSPACE(*s)) {
1986 argc--,argv++;
1987 goto switch_end;
1988 }
1989 /* catch use of gnu style long options */
1990 if (strEQ(s, "version")) {
dd374669 1991 s = (char *)"v";
6224f72b
GS
1992 goto reswitch;
1993 }
1994 if (strEQ(s, "help")) {
dd374669 1995 s = (char *)"h";
6224f72b
GS
1996 goto reswitch;
1997 }
1998 s--;
1999 /* FALL THROUGH */
2000 default:
cea2e8a9 2001 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2002 }
2003 }
6224f72b 2004 switch_end:
54310121 2005
f675dbe5
CB
2006 if (
2007#ifndef SECURE_INTERNAL_GETENV
2008 !PL_tainting &&
2009#endif
cf756827 2010 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2011 {
e1ec3a88 2012 const char *popt = s;
74288ac8
GS
2013 while (isSPACE(*s))
2014 s++;
317ea90d 2015 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 2016 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 2017 PL_tainting = TRUE;
317ea90d
MS
2018 PL_taint_warn = FALSE;
2019 }
74288ac8 2020 else {
bd61b366 2021 char *popt_copy = NULL;
74288ac8 2022 while (s && *s) {
4ea8f8fb 2023 char *d;
74288ac8
GS
2024 while (isSPACE(*s))
2025 s++;
2026 if (*s == '-') {
2027 s++;
2028 if (isSPACE(*s))
2029 continue;
2030 }
4ea8f8fb 2031 d = s;
74288ac8
GS
2032 if (!*s)
2033 break;
e4af53b0 2034 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 2035 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2036 while (++s && *s) {
2037 if (isSPACE(*s)) {
cf756827
GS
2038 if (!popt_copy) {
2039 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
2040 s = popt_copy + (s - popt);
2041 d = popt_copy + (d - popt);
2042 }
4ea8f8fb
MS
2043 *s++ = '\0';
2044 break;
2045 }
2046 }
1c4db469 2047 if (*d == 't') {
317ea90d
MS
2048 if( !PL_tainting ) {
2049 PL_taint_warn = TRUE;
2050 PL_tainting = TRUE;
2051 }
1c4db469 2052 } else {
97bd5664 2053 moreswitches(d);
1c4db469 2054 }
6224f72b 2055 }
6224f72b
GS
2056 }
2057 }
a0d0e21e 2058
20ef40cf
GA
2059#ifdef USE_SITECUSTOMIZE
2060 if (!minus_f) {
2061 if (!PL_preambleav)
2062 PL_preambleav = newAV();
2063 av_unshift(PL_preambleav, 1);
2064 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
2065 }
2066#endif
2067
6224f72b
GS
2068 if (!scriptname)
2069 scriptname = argv[0];
3280af22 2070 if (PL_e_script) {
6224f72b
GS
2071 argc++,argv--;
2072 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2073 }
bd61b366 2074 else if (scriptname == NULL) {
6224f72b
GS
2075#ifdef MSDOS
2076 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2077 moreswitches("h");
6224f72b
GS
2078#endif
2079 scriptname = "-";
2080 }
2081
b7975bdd
NC
2082 /* Set $^X early so that it can be used for relocatable paths in @INC */
2083 assert (!PL_tainted);
2084 TAINT;
2085 S_set_caret_X(aTHX);
2086 TAINT_NOT;
6224f72b
GS
2087 init_perllib();
2088
a52eba0e
NC
2089 {
2090 int suidscript;
2091 const int fdscript
2092 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2093
a52eba0e 2094 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2095
64ca3a65 2096#ifndef PERL_MICRO
a52eba0e
NC
2097# if defined(SIGCHLD) || defined(SIGCLD)
2098 {
2099# ifndef SIGCHLD
2100# define SIGCHLD SIGCLD
2101# endif
2102 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2103 if (sigstate == (Sighandler_t) SIG_IGN) {
2104 if (ckWARN(WARN_SIGNAL))
2105 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2106 "Can't ignore signal CHLD, forcing to default");
2107 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2108 }
0b5b802d 2109 }
a52eba0e 2110# endif
64ca3a65 2111#endif
0b5b802d 2112
a52eba0e 2113 if (PL_doextract
bf4acbe4 2114#ifdef MACOS_TRADITIONAL
a52eba0e 2115 || gMacPerl_AlwaysExtract
bf4acbe4 2116#endif
a52eba0e 2117 ) {
faef540c
NC
2118
2119 /* This will croak if suidscript is >= 0, as -x cannot be used with
2120 setuid scripts. */
2121 forbid_setid('x', suidscript);
2122 /* Hence you can't get here if suidscript >= 0 */
2123
2124 find_beginning();
a52eba0e
NC
2125 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2126 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2127 }
f4c556ac 2128 }
6224f72b 2129
561b68a9 2130 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2131 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2132 CvUNIQUE_on(PL_compcv);
2133
dd2155a4 2134 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2135
0c4f7ff0 2136 boot_core_PerlIO();
6224f72b 2137 boot_core_UNIVERSAL();
09bef843 2138 boot_core_xsutils();
6224f72b
GS
2139
2140 if (xsinit)
acfe0abc 2141 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2142#ifndef PERL_MICRO
d0d72822 2143#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2144 init_os_extras();
6224f72b 2145#endif
64ca3a65 2146#endif
6224f72b 2147
29209bc5 2148#ifdef USE_SOCKS
1b9c9cf5
DH
2149# ifdef HAS_SOCKS5_INIT
2150 socks5_init(argv[0]);
2151# else
29209bc5 2152 SOCKSinit(argv[0]);
1b9c9cf5 2153# endif
ac27b0f5 2154#endif
29209bc5 2155
6224f72b
GS
2156 init_predump_symbols();
2157 /* init_postdump_symbols not currently designed to be called */
2158 /* more than once (ENV isn't cleared first, for example) */
2159 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2160 if (!PL_do_undump)
6224f72b
GS
2161 init_postdump_symbols(argc,argv,env);
2162
27da23d5
JH
2163 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2164 * or explicitly in some platforms.
085a54d9 2165 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2166 * look like the user wants to use UTF-8. */
a0fd4948 2167#if defined(__SYMBIAN32__)
27da23d5
JH
2168 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2169#endif
06e66572
JH
2170 if (PL_unicode) {
2171 /* Requires init_predump_symbols(). */
a05d7ebb 2172 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2173 IO* io;
2174 PerlIO* fp;
2175 SV* sv;
2176
a05d7ebb 2177 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2178 * and the default open disciplines. */
a05d7ebb
JH
2179 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2180 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2181 (fp = IoIFP(io)))
2182 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2183 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2184 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2185 (fp = IoOFP(io)))
2186 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2187 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2188 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2189 (fp = IoOFP(io)))
2190 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2191 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2192 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2193 SVt_PV)))) {
a05d7ebb
JH
2194 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2195 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2196 if (in) {
2197 if (out)
2198 sv_setpvn(sv, ":utf8\0:utf8", 11);
2199 else
2200 sv_setpvn(sv, ":utf8\0", 6);
2201 }
2202 else if (out)
2203 sv_setpvn(sv, "\0:utf8", 6);
2204 SvSETMAGIC(sv);
2205 }
b310b053
JH
2206 }
2207 }
2208
4ffa73a3
JH
2209 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2210 if (strEQ(s, "unsafe"))
2211 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2212 else if (strEQ(s, "safe"))
2213 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2214 else
2215 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2216 }
2217
81d86705
NC
2218#ifdef PERL_MAD
2219 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2220 PL_madskills = 1;
2221 PL_minus_c = 1;
2222 if (!s || !s[0])
2223 PL_xmlfp = PerlIO_stdout();
2224 else {
2225 PL_xmlfp = PerlIO_open(s, "w");
2226 if (!PL_xmlfp)
2227 Perl_croak(aTHX_ "Can't open %s", s);
2228 }
2229 my_setenv("PERL_XMLDUMP", Nullch); /* hide from subprocs */
2230 }
2231 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2232 PL_madskills = atoi(s);
2233 my_setenv("PERL_MADSKILLS", Nullch); /* hide from subprocs */
2234 }
2235#endif
2236
6224f72b
GS
2237 init_lexer();
2238
2239 /* now parse the script */
2240
93189314 2241 SETERRNO(0,SS_NORMAL);
3280af22 2242 PL_error_count = 0;
bf4acbe4
GS
2243#ifdef MACOS_TRADITIONAL
2244 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2245 if (PL_minus_c)
2246 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2247 else {
2248 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2249 MacPerl_MPWFileName(PL_origfilename));
2250 }
2251 }
2252#else
3280af22
NIS
2253 if (yyparse() || PL_error_count) {
2254 if (PL_minus_c)
cea2e8a9 2255 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2256 else {
cea2e8a9 2257 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2258 PL_origfilename);
6224f72b
GS
2259 }
2260 }
bf4acbe4 2261#endif
57843af0 2262 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2263 PL_curstash = PL_defstash;
2264 PL_preprocess = FALSE;
2265 if (PL_e_script) {
2266 SvREFCNT_dec(PL_e_script);
a0714e2c 2267 PL_e_script = NULL;
6224f72b
GS
2268 }
2269
3280af22 2270 if (PL_do_undump)
6224f72b
GS
2271 my_unexec();
2272
57843af0
GS
2273 if (isWARN_ONCE) {
2274 SAVECOPFILE(PL_curcop);
2275 SAVECOPLINE(PL_curcop);
3280af22 2276 gv_check(PL_defstash);
57843af0 2277 }
6224f72b
GS
2278
2279 LEAVE;
2280 FREETMPS;
2281
2282#ifdef MYMALLOC
2283 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2284 dump_mstats("after compilation:");
2285#endif
2286
2287 ENTER;
3280af22 2288 PL_restartop = 0;
312caa8e 2289 return NULL;
6224f72b
GS
2290}
2291
954c1994
GS
2292/*
2293=for apidoc perl_run
2294
2295Tells a Perl interpreter to run. See L<perlembed>.
2296
2297=cut
2298*/
2299
6224f72b 2300int
0cb96387 2301perl_run(pTHXx)
6224f72b 2302{
97aff369 2303 dVAR;
6224f72b 2304 I32 oldscope;
14dd3ad8 2305 int ret = 0;
db36c5a1 2306 dJMPENV;
6224f72b 2307
ed6c66dd 2308 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 2309
3280af22 2310 oldscope = PL_scopestack_ix;
96e176bf
CL
2311#ifdef VMS
2312 VMSISH_HUSHED = 0;
2313#endif
6224f72b 2314
14dd3ad8 2315 JMPENV_PUSH(ret);
6224f72b
GS
2316 switch (ret) {
2317 case 1:
2318 cxstack_ix = -1; /* start context stack again */
312caa8e 2319 goto redo_body;
14dd3ad8 2320 case 0: /* normal completion */
14dd3ad8
GS
2321 redo_body:
2322 run_body(oldscope);
14dd3ad8
GS
2323 /* FALL THROUGH */
2324 case 2: /* my_exit() */
3280af22 2325 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2326 LEAVE;
2327 FREETMPS;
3280af22 2328 PL_curstash = PL_defstash;
3a1ee7e8 2329 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2330 PL_endav && !PL_minus_c)
2331 call_list(oldscope, PL_endav);
6224f72b
GS
2332#ifdef MYMALLOC
2333 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2334 dump_mstats("after execution: ");
2335#endif
37038d91 2336 ret = STATUS_EXIT;
14dd3ad8 2337 break;
6224f72b 2338 case 3:
312caa8e
CS
2339 if (PL_restartop) {
2340 POPSTACK_TO(PL_mainstack);
2341 goto redo_body;
6224f72b 2342 }
bf49b057 2343 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2344 FREETMPS;
14dd3ad8
GS
2345 ret = 1;
2346 break;
6224f72b
GS
2347 }
2348
14dd3ad8
GS
2349 JMPENV_POP;
2350 return ret;
312caa8e
CS
2351}
2352
14dd3ad8 2353
dd374669 2354STATIC void
14dd3ad8
GS
2355S_run_body(pTHX_ I32 oldscope)
2356{
97aff369 2357 dVAR;
6224f72b 2358 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2359 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2360
3280af22 2361 if (!PL_restartop) {
81d86705
NC
2362#ifdef PERL_MAD
2363 if (PL_xmlfp) {
2364 xmldump_all();
2365 exit(0); /* less likely to core dump than my_exit(0) */
2366 }
2367#endif
6224f72b 2368 DEBUG_x(dump_all());
cf2782cd 2369#ifdef DEBUGGING
ecae49c0
NC
2370 if (!DEBUG_q_TEST)
2371 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2372#endif
b900a521
JH
2373 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2374 PTR2UV(thr)));
6224f72b 2375
3280af22 2376 if (PL_minus_c) {
bf4acbe4 2377#ifdef MACOS_TRADITIONAL
e69a2255
JH
2378 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2379 (gMacPerl_ErrorFormat ? "# " : ""),
2380 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2381#else
bf49b057 2382 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2383#endif
6224f72b
GS
2384 my_exit(0);
2385 }
3280af22 2386 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2387 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2388 if (PL_initav)
2389 call_list(oldscope, PL_initav);
6224f72b
GS
2390 }
2391
2392 /* do it */
2393
3280af22 2394 if (PL_restartop) {
533c011a 2395 PL_op = PL_restartop;
3280af22 2396 PL_restartop = 0;
cea2e8a9 2397 CALLRUNOPS(aTHX);
6224f72b 2398 }
3280af22
NIS
2399 else if (PL_main_start) {
2400 CvDEPTH(PL_main_cv) = 1;
533c011a 2401 PL_op = PL_main_start;
cea2e8a9 2402 CALLRUNOPS(aTHX);
6224f72b 2403 }
f6b3007c
JH
2404 my_exit(0);
2405 /* NOTREACHED */
6224f72b
GS
2406}
2407
954c1994 2408/*
ccfc67b7
JH
2409=head1 SV Manipulation Functions
2410
954c1994
GS
2411=for apidoc p||get_sv
2412
2413Returns the SV of the specified Perl scalar. If C<create> is set and the
2414Perl variable does not exist then it will be created. If C<create> is not
2415set and the variable does not exist then NULL is returned.
2416
2417=cut
2418*/
2419
6224f72b 2420SV*
864dbfa3 2421Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2422{
2423 GV *gv;
6224f72b
GS
2424 gv = gv_fetchpv(name, create, SVt_PV);
2425 if (gv)
2426 return GvSV(gv);
a0714e2c 2427 return NULL;
6224f72b
GS
2428}
2429
954c1994 2430/*
ccfc67b7
JH
2431=head1 Array Manipulation Functions
2432
954c1994
GS
2433=for apidoc p||get_av
2434
2435Returns the AV of the specified Perl array. If C<create> is set and the
2436Perl variable does not exist then it will be created. If C<create> is not
2437set and the variable does not exist then NULL is returned.
2438
2439=cut
2440*/
2441
6224f72b 2442AV*
864dbfa3 2443Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2444{
c4420975 2445 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2446 if (create)
2447 return GvAVn(gv);
2448 if (gv)
2449 return GvAV(gv);
7d49f689 2450 return NULL;
6224f72b
GS
2451}
2452
954c1994 2453/*
ccfc67b7
JH
2454=head1 Hash Manipulation Functions
2455
954c1994
GS
2456=for apidoc p||get_hv
2457
2458Returns the HV of the specified Perl hash. If C<create> is set and the
2459Perl variable does not exist then it will be created. If C<create> is not
2460set and the variable does not exist then NULL is returned.
2461
2462=cut
2463*/
2464
6224f72b 2465HV*
864dbfa3 2466Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2467{
890ce7af 2468 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2469 if (create)
2470 return GvHVn(gv);
2471 if (gv)
2472 return GvHV(gv);
5c284bb0 2473 return NULL;
a0d0e21e
LW
2474}
2475
954c1994 2476/*
ccfc67b7
JH
2477=head1 CV Manipulation Functions
2478
954c1994
GS
2479=for apidoc p||get_cv
2480
2481Returns the CV of the specified Perl subroutine. If C<create> is set and
2482the Perl subroutine does not exist then it will be declared (which has the
2483same effect as saying C<sub name;>). If C<create> is not set and the
2484subroutine does not exist then NULL is returned.
2485
2486=cut
2487*/
2488
a0d0e21e 2489CV*
864dbfa3 2490Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2491{
c4420975 2492 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2493 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2494 /* XXX this is probably not what they think they're getting.
2495 * It has the same effect as "sub name;", i.e. just a forward
2496 * declaration! */
8ebc5c01 2497 if (create && !GvCVu(gv))
774d564b 2498 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2499 newSVOP(OP_CONST, 0, newSVpv(name,0)),
5f66b61c 2500 NULL, NULL);
a0d0e21e 2501 if (gv)
8ebc5c01 2502 return GvCVu(gv);
601f1833 2503 return NULL;
a0d0e21e
LW
2504}
2505
79072805
LW
2506/* Be sure to refetch the stack pointer after calling these routines. */
2507
954c1994 2508/*
ccfc67b7
JH
2509
2510=head1 Callback Functions
2511
954c1994
GS
2512=for apidoc p||call_argv
2513
2514Performs a callback to the specified Perl sub. See L<perlcall>.
2515
2516=cut
2517*/
2518
a0d0e21e 2519I32
8f42b153 2520Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2521
8ac85365
NIS
2522 /* See G_* flags in cop.h */
2523 /* null terminated arg list */
8990e307 2524{
97aff369 2525 dVAR;
a0d0e21e 2526 dSP;
8990e307 2527
924508f0 2528 PUSHMARK(SP);
a0d0e21e 2529 if (argv) {
8990e307 2530 while (*argv) {
a0d0e21e 2531 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2532 argv++;
2533 }
a0d0e21e 2534 PUTBACK;
8990e307 2535 }
864dbfa3 2536 return call_pv(sub_name, flags);
8990e307
LW
2537}
2538
954c1994
GS
2539/*
2540=for apidoc p||call_pv
2541
2542Performs a callback to the specified Perl sub. See L<perlcall>.
2543
2544=cut
2545*/
2546
a0d0e21e 2547I32
864dbfa3 2548Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2549 /* name of the subroutine */
2550 /* See G_* flags in cop.h */
a0d0e21e 2551{
864dbfa3 2552 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2553}
2554
954c1994
GS
2555/*
2556=for apidoc p||call_method
2557
2558Performs a callback to the specified Perl method. The blessed object must
2559be on the stack. See L<perlcall>.
2560
2561=cut
2562*/
2563
a0d0e21e 2564I32
864dbfa3 2565Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2566 /* name of the subroutine */
2567 /* See G_* flags in cop.h */
a0d0e21e 2568{
968b3946 2569 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2570}
2571
2572/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2573/*
2574=for apidoc p||call_sv
2575
2576Performs a callback to the Perl sub whose name is in the SV. See
2577L<perlcall>.
2578
2579=cut
2580*/
2581
a0d0e21e 2582I32
864dbfa3 2583Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2584 /* See G_* flags in cop.h */
a0d0e21e 2585{
27da23d5 2586 dVAR; dSP;
a0d0e21e 2587 LOGOP myop; /* fake syntax tree node */
968b3946 2588 UNOP method_op;
aa689395 2589 I32 oldmark;
8ea43dc8 2590 VOL I32 retval = 0;
a0d0e21e 2591 I32 oldscope;
54310121 2592 bool oldcatch = CATCH_GET;
6224f72b 2593 int ret;
c4420975 2594 OP* const oldop = PL_op;
db36c5a1 2595 dJMPENV;
1e422769 2596
a0d0e21e
LW
2597 if (flags & G_DISCARD) {
2598 ENTER;
2599 SAVETMPS;
2600 }
2601
aa689395 2602 Zero(&myop, 1, LOGOP);
5f66b61c 2603 myop.op_next = NULL;
f51d4af5 2604 if (!(flags & G_NOARGS))
aa689395 2605 myop.op_flags |= OPf_STACKED;
54310121
PP
2606 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2607 (flags & G_ARRAY) ? OPf_WANT_LIST :
2608 OPf_WANT_SCALAR);
462e5cf6 2609 SAVEOP();
533c011a 2610 PL_op = (OP*)&myop;
aa689395 2611
3280af22
NIS
2612 EXTEND(PL_stack_sp, 1);
2613 *++PL_stack_sp = sv;
aa689395 2614 oldmark = TOPMARK;
3280af22 2615 oldscope = PL_scopestack_ix;
a0d0e21e 2616
3280af22 2617 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2618 /* Handle first BEGIN of -d. */
3280af22 2619 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2620 /* Try harder, since this may have been a sighandler, thus
2621 * curstash may be meaningless. */
3280af22 2622 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2623 && !(flags & G_NODEBUG))
533c011a 2624 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2625
968b3946
GS
2626 if (flags & G_METHOD) {
2627 Zero(&method_op, 1, UNOP);
2628 method_op.op_next = PL_op;
2629 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2630 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2631 PL_op = (OP*)&method_op;
968b3946
GS
2632 }
2633
312caa8e 2634 if (!(flags & G_EVAL)) {
0cdb2077 2635 CATCH_SET(TRUE);
d6f07c05 2636 CALL_BODY_SUB((OP*)&myop);
312caa8e 2637 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2638 CATCH_SET(oldcatch);
312caa8e
CS
2639 }
2640 else {
d78bda3d 2641 myop.op_other = (OP*)&myop;
3280af22 2642 PL_markstack_ptr--;
edb2152a 2643 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2644 PL_markstack_ptr++;
a0d0e21e 2645
14dd3ad8 2646 JMPENV_PUSH(ret);
edb2152a 2647
6224f72b
GS
2648 switch (ret) {
2649 case 0:
14dd3ad8 2650 redo_body:
d6f07c05 2651 CALL_BODY_SUB((OP*)&myop);
312caa8e
CS
2652 retval = PL_stack_sp - (PL_stack_base + oldmark);
2653 if (!(flags & G_KEEPERR))
c69006e4 2654 sv_setpvn(ERRSV,"",0);
a0d0e21e 2655 break;
6224f72b 2656 case 1:
f86702cc 2657 STATUS_ALL_FAILURE;
a0d0e21e 2658 /* FALL THROUGH */
6224f72b 2659 case 2:
a0d0e21e 2660 /* my_exit() was called */
3280af22 2661 PL_curstash = PL_defstash;
a0d0e21e 2662 FREETMPS;
14dd3ad8 2663 JMPENV_POP;
cc3604b1 2664 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2665 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2666 my_exit_jump();
a0d0e21e 2667 /* NOTREACHED */
6224f72b 2668 case 3:
3280af22 2669 if (PL_restartop) {
533c011a 2670 PL_op = PL_restartop;
3280af22 2671 PL_restartop = 0;
312caa8e 2672 goto redo_body;
a0d0e21e 2673 }
3280af22 2674 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2675 if (flags & G_ARRAY)
2676 retval = 0;
2677 else {
2678 retval = 1;
3280af22 2679 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2680 }
312caa8e 2681 break;
a0d0e21e 2682 }
a0d0e21e 2683
edb2152a
NC
2684 if (PL_scopestack_ix > oldscope)
2685 delete_eval_scope();
14dd3ad8 2686 JMPENV_POP;
a0d0e21e 2687 }
1e422769 2688
a0d0e21e 2689 if (flags & G_DISCARD) {
3280af22 2690 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2691 retval = 0;
2692 FREETMPS;
2693 LEAVE;
2694 }
533c011a 2695 PL_op = oldop;
a0d0e21e
LW
2696 return retval;
2697}
2698
6e72f9df 2699/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2700
954c1994
GS
2701/*
2702=for apidoc p||eval_sv
2703
2704Tells Perl to C<eval> the string in the SV.
2705
2706=cut
2707*/
2708
a0d0e21e 2709I32
864dbfa3 2710Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2711
8ac85365 2712 /* See G_* flags in cop.h */
a0d0e21e 2713{
97aff369 2714 dVAR;
924508f0 2715 dSP;
a0d0e21e 2716 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2717 VOL I32 oldmark = SP - PL_stack_base;
2718 VOL I32 retval = 0;
6224f72b 2719 int ret;
c4420975 2720 OP* const oldop = PL_op;
db36c5a1 2721 dJMPENV;
84902520 2722
4633a7c4
LW
2723 if (flags & G_DISCARD) {
2724 ENTER;
2725 SAVETMPS;
2726 }
2727
462e5cf6 2728 SAVEOP();
533c011a
NIS
2729 PL_op = (OP*)&myop;
2730 Zero(PL_op, 1, UNOP);
3280af22
NIS
2731 EXTEND(PL_stack_sp, 1);
2732 *++PL_stack_sp = sv;
79072805 2733
4633a7c4
LW
2734 if (!(flags & G_NOARGS))
2735 myop.op_flags = OPf_STACKED;
5f66b61c 2736 myop.op_next = NULL;
6e72f9df 2737 myop.op_type = OP_ENTEREVAL;
54310121
PP
2738 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2739 (flags & G_ARRAY) ? OPf_WANT_LIST :
2740 OPf_WANT_SCALAR);
6e72f9df
PP
2741 if (flags & G_KEEPERR)
2742 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2743
dedbcade
DM
2744 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2745 * before a PUSHEVAL, which corrupts the stack after a croak */
2746 TAINT_PROPER("eval_sv()");
2747
14dd3ad8 2748 JMPENV_PUSH(ret);
6224f72b
GS
2749 switch (ret) {
2750 case 0:
14dd3ad8 2751 redo_body:
d6f07c05 2752 CALL_BODY_EVAL((OP*)&myop);
312caa8e
CS
2753 retval = PL_stack_sp - (PL_stack_base + oldmark);
2754 if (!(flags & G_KEEPERR))
c69006e4 2755 sv_setpvn(ERRSV,"",0);
4633a7c4 2756 break;
6224f72b 2757 case 1:
f86702cc 2758 STATUS_ALL_FAILURE;
4633a7c4 2759 /* FALL THROUGH */
6224f72b 2760 case 2:
4633a7c4 2761 /* my_exit() was called */
3280af22 2762 PL_curstash = PL_defstash;
4633a7c4 2763 FREETMPS;
14dd3ad8 2764 JMPENV_POP;
cc3604b1 2765 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2766 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2767 my_exit_jump();
4633a7c4 2768 /* NOTREACHED */
6224f72b 2769 case 3:
3280af22 2770 if (PL_restartop) {
533c011a 2771 PL_op = PL_restartop;
3280af22 2772 PL_restartop = 0;
312caa8e 2773 goto redo_body;
4633a7c4 2774 }
3280af22 2775 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2776 if (flags & G_ARRAY)
2777 retval = 0;
2778 else {
2779 retval = 1;
3280af22 2780 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2781 }
312caa8e 2782 break;
4633a7c4
LW
2783 }
2784
14dd3ad8 2785 JMPENV_POP;
4633a7c4 2786 if (flags & G_DISCARD) {
3280af22 2787 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2788 retval = 0;
2789 FREETMPS;
2790 LEAVE;
2791 }
533c011a 2792 PL_op = oldop;
4633a7c4
LW
2793 return retval;
2794}
2795
954c1994
GS
2796/*
2797=for apidoc p||eval_pv
2798
2799Tells Perl to C<eval> the given string and return an SV* result.
2800
2801=cut
2802*/
2803
137443ea 2804SV*
864dbfa3 2805Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2806{
97aff369 2807 dVAR;
137443ea
PP
2808 dSP;
2809 SV* sv = newSVpv(p, 0);
2810
864dbfa3 2811 eval_sv(sv, G_SCALAR);
137443ea
PP
2812 SvREFCNT_dec(sv);
2813
2814 SPAGAIN;
2815 sv = POPs;
2816 PUTBACK;
2817
2d8e6c8d 2818 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2819 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2820 }
137443ea
PP
2821
2822 return sv;
2823}
2824
4633a7c4
LW
2825/* Require a module. */
2826
954c1994 2827/*
ccfc67b7
JH
2828=head1 Embedding Functions
2829
954c1994
GS
2830=for apidoc p||require_pv
2831
7d3fb230
BS
2832Tells Perl to C<require> the file named by the string argument. It is
2833analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2834implemented that way; consider using load_module instead.
954c1994 2835
7d3fb230 2836=cut */
954c1994 2837
4633a7c4 2838void
864dbfa3 2839Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2840{
97aff369 2841 dVAR;
d3acc0f7 2842 dSP;
97aff369 2843 SV* sv;
e788e7d3 2844 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2845 PUTBACK;
be41e5d9
NC
2846 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2847 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2848 SPAGAIN;
2849 POPSTACK;
79072805
LW
2850}
2851
79072805 2852void
e1ec3a88 2853Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2854{
71315bf2 2855 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2856
c4420975 2857 if (gv)
14befaf4 2858 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2859}
2860
76e3520e 2861STATIC void
e1ec3a88 2862S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2863{
ab821d7f 2864 /* This message really ought to be max 23 lines.
75c72d73 2865 * Removed -h because the user already knows that option. Others? */
fb73857a 2866
27da23d5 2867 static const char * const usage_msg[] = {
aefc56c5
SF
2868"-0[octal] specify record separator (\\0, if no argument)",
2869"-A[mod][=pattern] activate all/given assertions",
2870"-a autosplit mode with -n or -p (splits $_ into @F)",
2871"-C[number/list] enables the listed Unicode features",
2872"-c check syntax only (runs BEGIN and CHECK blocks)",
2873"-d[:debugger] run program under debugger",
2874"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2875"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2876"-E program like -e, but enables all optional features",
aefc56c5 2877"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2878"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2879"-i[extension] edit <> files in place (makes backup if extension supplied)",
2880"-Idirectory specify @INC/#include directory (several -I's allowed)",
2881"-l[octal] enable line ending processing, specifies line terminator",
2882"-[mM][-]module execute \"use/no module...\" before executing program",
2883"-n assume \"while (<>) { ... }\" loop around program",
2884"-p assume loop like -n but print line also, like sed",
2885"-P run program through C preprocessor before compilation",
2886"-s enable rudimentary parsing for switches after programfile",
2887"-S look for programfile using PATH environment variable",
2888"-t enable tainting warnings",
2889"-T enable tainting checks",
2890"-u dump core after parsing program",
2891"-U allow unsafe operations",
2892"-v print version, subversion (includes VERY IMPORTANT perl info)",
2893"-V[:variable] print configuration summary (or a single Config.pm variable)",
2894"-w enable many useful warnings (RECOMMENDED)",
2895"-W enable all warnings",
2896"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2897"-X disable all warnings",
fb73857a
PP
2898"\n",
2899NULL
2900};
27da23d5 2901 const char * const *p = usage_msg;
fb73857a 2902
b0e47665
GS
2903 PerlIO_printf(PerlIO_stdout(),
2904 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2905 name);
fb73857a 2906 while (*p)
b0e47665 2907 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2908}
2909
b4ab917c
DM
2910/* convert a string of -D options (or digits) into an int.
2911 * sets *s to point to the char after the options */
2912
2913#ifdef DEBUGGING
2914int
e1ec3a88 2915Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2916{
27da23d5 2917 static const char * const usage_msgd[] = {
e6e64d9b
JC
2918 " Debugging flag values: (see also -d)",
2919 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2920 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2921 " l Context (loop) stack processing",
2922 " t Trace execution",
2923 " o Method and overloading resolution",
2924 " c String/numeric conversions",
2925 " P Print profiling info, preprocessor command for -P, source file input state",
2926 " m Memory allocation",
2927 " f Format processing",
2928 " r Regular expression parsing and execution",
2929 " x Syntax tree dump",
3679267a 2930 " u Tainting checks",
e6e64d9b
JC
2931 " H Hash dump -- usurps values()",
2932 " X Scratchpad allocation",
2933 " D Cleaning up",
2934 " S Thread synchronization",
2935 " T Tokenising",
2936 " R Include reference counts of dumped variables (eg when using -Ds)",
2937 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2938 " v Verbose: use in conjunction with other flags",
2939 " C Copy On Write",
2940 " A Consistency checks on internal structures",
3679267a 2941 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2942 NULL
2943 };
b4ab917c
DM
2944 int i = 0;
2945 if (isALPHA(**s)) {
2946 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2947 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2948
2949 for (; isALNUM(**s); (*s)++) {
c4420975 2950 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2951 if (d)
2952 i |= 1 << (d - debopts);
2953 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2954 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2955 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2956 }
2957 }
e6e64d9b 2958 else if (isDIGIT(**s)) {
b4ab917c
DM
2959 i = atoi(*s);
2960 for (; isALNUM(**s); (*s)++) ;
2961 }
ddcf8bc1 2962 else if (givehelp) {
06e869a4 2963 const char *const *p = usage_msgd;
e6e64d9b
JC
2964 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2965 }
b4ab917c
DM
2966# ifdef EBCDIC
2967 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2968 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2969 "-Dp not implemented on this platform\n");
2970# endif
2971 return i;
2972}
2973#endif
2974
79072805
LW
2975/* This routine handles any switches that can be given during run */
2976
2977char *
97bd5664 2978Perl_moreswitches(pTHX_ char *s)
79072805 2979{
27da23d5 2980 dVAR;
84c133a0 2981 UV rschar;
79072805
LW
2982
2983 switch (*s) {
2984 case '0':
a863c7d1 2985 {
f2095865 2986 I32 flags = 0;
a3b680e6 2987 STRLEN numlen;
f2095865
JH
2988
2989 SvREFCNT_dec(PL_rs);
2990 if (s[1] == 'x' && s[2]) {
a3b680e6 2991 const char *e = s+=2;
f2095865
JH
2992 U8 *tmps;
2993
a3b680e6
AL
2994 while (*e)
2995 e++;
f2095865
JH
2996 numlen = e - s;
2997 flags = PERL_SCAN_SILENT_ILLDIGIT;
2998 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2999 if (s + numlen < e) {
3000 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3001 numlen = 0;
3002 s--;
3003 }
396482e1 3004 PL_rs = newSVpvs("");
c5661c80 3005 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3006 tmps = (U8*)SvPVX(PL_rs);
3007 uvchr_to_utf8(tmps, rschar);
3008 SvCUR_set(PL_rs, UNISKIP(rschar));
3009 SvUTF8_on(PL_rs);
3010 }
3011 else {
3012 numlen = 4;
3013 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3014 if (rschar & ~((U8)~0))
3015 PL_rs = &PL_sv_undef;
3016 else if (!rschar && numlen >= 2)
396482e1 3017 PL_rs = newSVpvs("");
f2095865
JH
3018 else {
3019 char ch = (char)rschar;
3020 PL_rs = newSVpvn(&ch, 1);
3021 }
3022 }
800633c3 3023 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3024 return s + numlen;
a863c7d1 3025 }
46487f74 3026 case 'C':
a05d7ebb 3027 s++;
dd374669 3028 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3029 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3030 PL_utf8cache = -1;
46487f74 3031 return s;
2304df62 3032 case 'F':
3280af22 3033 PL_minus_F = TRUE;
ebce5377
RGS
3034 PL_splitstr = ++s;
3035 while (*s && !isSPACE(*s)) ++s;
e49e380e 3036 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3037 return s;
79072805 3038 case 'a':
3280af22 3039 PL_minus_a = TRUE;
79072805
LW
3040 s++;
3041 return s;
3042 case 'c':
3280af22 3043 PL_minus_c = TRUE;
79072805
LW
3044 s++;
3045 return s;
3046 case 'd':
97bd5664 3047 forbid_setid('d', -1);
4633a7c4 3048 s++;
2cbb2ee1
RGS
3049
3050 /* -dt indicates to the debugger that threads will be used */
3051 if (*s == 't' && !isALNUM(s[1])) {
3052 ++s;
3053 my_setenv("PERL5DB_THREADED", "1");
3054 }
3055
70c94a19
RR
3056 /* The following permits -d:Mod to accepts arguments following an =
3057 in the fashion that -MSome::Mod does. */
3058 if (*s == ':' || *s == '=') {
06b5626a 3059 const char *start;
396482e1 3060 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3061 start = ++s;
3062 /* We now allow -d:Module=Foo,Bar */
3063 while(isALNUM(*s) || *s==':') ++s;
3064 if (*s != '=')
3065 sv_catpv(sv, start);
3066 else {
3067 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3068 /* Don't use NUL as q// delimiter here, this string goes in the
3069 * environment. */
3070 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3071 }
4633a7c4 3072 s += strlen(s);
184f32ec 3073 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3074 }
ed094faf 3075 if (!PL_perldb) {
3280af22 3076 PL_perldb = PERLDB_ALL;
a0d0e21e 3077 init_debugger();
ed094faf 3078 }
79072805
LW
3079 return s;
3080 case 'D':
0453d815 3081 {
79072805 3082#ifdef DEBUGGING
97bd5664 3083 forbid_setid('D', -1);
b4ab917c 3084 s++;
dd374669 3085 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3086#else /* !DEBUGGING */
0453d815 3087 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3088 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3089 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3090 for (s++; isALNUM(*s); s++) ;
79072805 3091#endif
79072805 3092 return s;
0453d815 3093 }
4633a7c4 3094 case 'h':
ac27b0f5 3095 usage(PL_origargv[0]);
7ca617d0 3096 my_exit(0);
79072805 3097 case 'i':
43c5f42d 3098 Safefree(PL_inplace);
c030f24b
GH
3099#if defined(__CYGWIN__) /* do backup extension automagically */
3100 if (*(s+1) == '\0') {
c86a4f2e 3101 PL_inplace = savepvs(".bak");
c030f24b
GH
3102 return s+1;
3103 }
3104#endif /* __CYGWIN__ */
5ef5d758 3105 {
d4c19fe8 3106 const char * const start = ++s;
5ef5d758
NC
3107 while (*s && !isSPACE(*s))
3108 ++s;
3109
3110 PL_inplace = savepvn(start, s - start);
3111 }
7b8d334a 3112 if (*s) {
5ef5d758 3113 ++s;
7b8d334a 3114 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3115 s++;
7b8d334a 3116 }
fb73857a 3117 return s;
4e49a025 3118 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3119 forbid_setid('I', -1);
fb73857a
PP
3120 ++s;
3121 while (*s && isSPACE(*s))
3122 ++s;
3123 if (*s) {
774d564b 3124 char *e, *p;
0df16ed7
GS
3125 p = s;
3126 /* ignore trailing spaces (possibly followed by other switches) */
3127 do {
3128 for (e = p; *e && !isSPACE(*e); e++) ;
3129 p = e;
3130 while (isSPACE(*p))
3131 p++;
3132 } while (*p && *p != '-');
3133 e = savepvn(s, e-s);
88fe16b2 3134 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3135 Safefree(e);
3136 s = p;
3137 if (*s == '-')
3138 s++;
79072805
LW
3139 }
3140 else
a67e862a 3141 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3142 return s;
79072805 3143 case 'l':
3280af22 3144 PL_minus_l = TRUE;
79072805 3145 s++;
7889fe52
NIS
3146 if (PL_ors_sv) {
3147 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3148 PL_ors_sv = NULL;
7889fe52 3149 }
79072805 3150 if (isDIGIT(*s)) {
53305cf1 3151 I32 flags = 0;
a3b680e6 3152 STRLEN numlen;
396482e1 3153 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3154 numlen = 3 + (*s == '0');
3155 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3156 s += numlen;
3157 }
3158 else {
8bfdd7d9 3159 if (RsPARA(PL_rs)) {
396482e1 3160 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3161 }
3162 else {
8bfdd7d9 3163 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3164 }
79072805
LW
3165 }
3166 return s;
06492da6 3167 case 'A':
97bd5664 3168 forbid_setid('A', -1);
930366bd
RGS
3169 if (!PL_preambleav)
3170 PL_preambleav = newAV();
aefc56c5
SF
3171 s++;
3172 {
44f8325f 3173 char * const start = s;
396482e1 3174 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3175 while(isALNUM(*s) || *s == ':') ++s;
3176 if (s != start) {
396482e1 3177 sv_catpvs(sv, "::");
aefc56c5
SF
3178 sv_catpvn(sv, start, s-start);
3179 }
3180 if (*s == '=') {
0c5a913d 3181 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3182 s+=strlen(s);
3183 }
3184 else if (*s != '\0') {
551405c4 3185 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3186 }
06492da6 3187 av_push(PL_preambleav, sv);
aefc56c5 3188 return s;
06492da6 3189 }
1a30305b 3190 case 'M':
97bd5664 3191 forbid_setid('M', -1); /* XXX ? */
1a30305b
PP
3192 /* FALL THROUGH */
3193 case 'm':
97bd5664 3194 forbid_setid('m', -1); /* XXX ? */
1a30305b 3195 if (*++s) {
a5f75d66 3196 char *start;
11343788 3197 SV *sv;
e1ec3a88 3198 const char *use = "use ";
a5f75d66 3199 /* -M-foo == 'no foo' */
d0043bd1
NC
3200 /* Leading space on " no " is deliberate, to make both
3201 possibilities the same length. */
3202 if (*s == '-') { use = " no "; ++s; }
3203 sv = newSVpvn(use,4);
a5f75d66 3204 start = s;
1a30305b 3205 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3206 while(isALNUM(*s) || *s==':') ++s;
3207 if (*s != '=') {
11343788 3208 sv_catpv(sv, start);
c07a80fd
PP
3209 if (*(start-1) == 'm') {
3210 if (*s != '\0')
cea2e8a9 3211 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3212 sv_catpvs( sv, " ()");
c07a80fd
PP
3213 }
3214 } else {
6df41af2 3215 if (s == start)
be98fb35
GS
3216 Perl_croak(aTHX_ "Module name required with -%c option",
3217 s[-1]);
11343788 3218 sv_catpvn(sv, start, s-start);
396482e1
GA
3219 sv_catpvs(sv, " split(/,/,q");
3220 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3221 sv_catpv(sv, ++s);
396482e1 3222 sv_catpvs(sv, "\0)");
c07a80fd 3223 }
1a30305b 3224 s += strlen(s);
5c831c24 3225 if (!PL_preambleav)
3280af22
NIS
3226 PL_preambleav = newAV();
3227 av_push(PL_preambleav, sv);
1a30305b
PP
3228 }
3229 else
9e81e6a1 3230 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3231 return s;
79072805 3232 case 'n':
3280af22 3233 PL_minus_n = TRUE;
79072805
LW
3234 s++;
3235 return s;
3236 case 'p':
3280af22 3237 PL_minus_p = TRUE;
79072805
LW
3238 s++;
3239 return s;
3240 case 's':
97bd5664 3241 forbid_setid('s', -1);
3280af22 3242 PL_doswitches = TRUE;
79072805
LW
3243 s++;
3244 return s;
6537fe72
MS
3245 case 't':
3246 if (!PL_tainting)
22f7c9c9 3247 TOO_LATE_FOR('t');
6537fe72
MS
3248 s++;
3249 return s;
463ee0b2 3250 case 'T':
3280af22 3251 if (!PL_tainting)
22f7c9c9 3252 TOO_LATE_FOR('T');
463ee0b2
LW
3253 s++;
3254 return s;
79072805 3255 case 'u':
bf4acbe4
GS
3256#ifdef MACOS_TRADITIONAL
3257 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3258#endif
3280af22 3259 PL_do_undump = TRUE;
79072805
LW
3260 s++;
3261 return s;
3262 case 'U':
3280af22 3263 PL_unsafe = TRUE;
79072805
LW
3264 s++;
3265 return s;
3266 case 'v':
d7aa5382 3267 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3268 upg_version(PL_patchlevel);
8e9464f1 3269#if !defined(DGUX)
b0e47665 3270 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3271 Perl_form(aTHX_ "\nThis is perl, %"SVf
3272#ifdef PERL_PATCHNUM
3273 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3274#endif
3275 " built for %s",
be2597df 3276 SVfARG(vstringify(PL_patchlevel)),
95b63a38 3277 ARCHNAME));
8e9464f1
JH
3278#else /* DGUX */
3279/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3280 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3281 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3282 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3283 PerlIO_printf(PerlIO_stdout(),
3284 Perl_form(aTHX_ " built under %s at %s %s\n",
3285 OSNAME, __DATE__, __TIME__));
3286 PerlIO_printf(PerlIO_stdout(),
3287 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3288 OSVERS));
8e9464f1
JH
3289#endif /* !DGUX */
3290
fb73857a
PP
3291#if defined(LOCAL_PATCH_COUNT)
3292 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3293 PerlIO_printf(PerlIO_stdout(),
3294 "\n(with %d registered patch%s, "
3295 "see perl -V for more detail)",
bb7a0f54 3296 LOCAL_PATCH_COUNT,
b0e47665 3297 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3298#endif
1a30305b 3299
b0e47665 3300 PerlIO_printf(PerlIO_stdout(),
34ce1597 3301 "\n\nCopyright 1987-2007, Larry Wall\n");
eae9c151
JH
3302#ifdef MACOS_TRADITIONAL
3303 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3304 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3305 "maintained by Chris Nandor\n");
eae9c151 3306#endif
79072805 3307#ifdef MSDOS
b0e47665
GS
3308 PerlIO_printf(PerlIO_stdout(),
3309 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3310#endif
3311#ifdef DJGPP
b0e47665
GS
3312 PerlIO_printf(PerlIO_stdout(),
3313 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3314 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3315#endif
79072805 3316#ifdef OS2
b0e47665
GS
3317 PerlIO_printf(PerlIO_stdout(),
3318 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3319 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3320#endif
79072805 3321#ifdef atarist
b0e47665
GS
3322 PerlIO_printf(PerlIO_stdout(),
3323 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3324#endif
a3f9223b 3325#ifdef __BEOS__
b0e47665
GS
3326 PerlIO_printf(PerlIO_stdout(),
3327 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3328#endif
1d84e8df 3329#ifdef MPE
b0e47665 3330 PerlIO_printf(PerlIO_stdout(),
e583a879 3331 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3332#endif
9d116dd7 3333#ifdef OEMVS
b0e47665
GS
3334 PerlIO_printf(PerlIO_stdout(),
3335 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3336#endif
495c5fdc 3337#ifdef __VOS__
b0e47665 3338 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3339 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3340#endif
092bebab 3341#ifdef __OPEN_VM
b0e47665
GS
3342 PerlIO_printf(PerlIO_stdout(),
3343 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3344#endif
a1a0e61e 3345#ifdef POSIX_BC
b0e47665
GS
3346 PerlIO_printf(PerlIO_stdout(),
3347 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3348#endif
61ae2fbf 3349#ifdef __MINT__
b0e47665
GS
3350 PerlIO_printf(PerlIO_stdout(),
3351 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3352#endif
f83d2536 3353#ifdef EPOC
b0e47665 3354 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3355 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3356#endif
e1caacb4 3357#ifdef UNDER_CE
b475b3e6
JH
3358 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3359 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3360 wce_hitreturn();
3361#endif
a0fd4948 3362#ifdef __SYMBIAN32__
27da23d5
JH
3363 PerlIO_printf(PerlIO_stdout(),
3364 "Symbian port by Nokia, 2004-2005\n");
3365#endif
baed7233
DL
3366#ifdef BINARY_BUILD_NOTICE
3367 BINARY_BUILD_NOTICE;
3368#endif
b0e47665
GS
3369 PerlIO_printf(PerlIO_stdout(),
3370 "\n\
79072805 3371Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3372GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3373Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3374this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3375Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3376 my_exit(0);
79072805 3377 case 'w':
b2e5e6ba 3378 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3379 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3380 }
599cee73
PM
3381 s++;
3382 return s;
3383 case 'W':
ac27b0f5 3384 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3385 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3386 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3387 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3388 s++;
3389 return s;
3390 case 'X':
ac27b0f5 3391 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3392 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3393 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3394 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3395 s++;
3396 return s;
a0d0e21e 3397 case '*':
79072805
LW
3398 case ' ':
3399 if (s[1] == '-') /* Additional switches on #! line. */
3400 return s+2;
3401 break;
a0d0e21e 3402 case '-':
79072805 3403 case 0:
51882d45 3404#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3405 case '\r':
3406#endif
79072805
LW
3407 case '\n':
3408 case '\t':
3409 break;
aa689395
PP
3410#ifdef ALTERNATE_SHEBANG
3411 case 'S': /* OS/2 needs -S on "extproc" line. */
3412 break;
3413#endif
a0d0e21e 3414 case 'P':
3280af22 3415 if (PL_preprocess)
a0d0e21e
LW
3416 return s+1;
3417 /* FALL THROUGH */
79072805 3418 default:
cea2e8a9 3419 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3420 }
bd61b366 3421 return NULL;
79072805
LW
3422}
3423
3424/* compliments of Tom Christiansen */
3425
3426/* unexec() can be found in the Gnu emacs distribution */
ee580363 3427/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3428
3429void
864dbfa3 3430Perl_my_unexec(pTHX)
79072805 3431{
b37c2d43 3432 PERL_UNUSED_CONTEXT;
79072805 3433#ifdef UNEXEC
b37c2d43
AL
3434 SV * prog = newSVpv(BIN_EXP, 0);
3435 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3436 int status = 1;
79072805
LW
3437 extern int etext;
3438
396482e1 3439 sv_catpvs(prog, "/perl");
396482e1 3440 sv_catpvs(file, ".perldump");
79072805 3441
ee580363
GS
3442 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3443 /* unexec prints msg to stderr in case of failure */
6ad3d225 3444 PerlProc_exit(status);
79072805 3445#else
a5f75d66
AD
3446# ifdef VMS
3447# include <lib$routines.h>
3448 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3449# elif defined(WIN32) || defined(__CYGWIN__)
3450 Perl_croak(aTHX_ "dump is not supported");
aa689395 3451# else
79072805 3452 ABORT(); /* for use with undump */
aa689395 3453# endif
a5f75d66 3454#endif
79072805
LW
3455}
3456
cb68f92d
GS
3457/* initialize curinterp */
3458STATIC void
cea2e8a9 3459S_init_interp(pTHX)
cb68f92d 3460{
97aff369 3461 dVAR;
acfe0abc
GS
3462#ifdef MULTIPLICITY
3463# define PERLVAR(var,type)
3464# define PERLVARA(var,n,type)
3465# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3466# define PERLVARI(var,type,init) aTHX->var = init;
3467# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3468# else
acfe0abc
GS
3469# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3470# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3471# endif
acfe0abc 3472# include "intrpvar.h"
b7f7fff6 3473# include "thrdvar.h"
acfe0abc
GS
3474# undef PERLVAR
3475# undef PERLVARA
3476# undef PERLVARI
3477# undef PERLVARIC
3478#else
3479# define PERLVAR(var,type)
3480# define PERLVARA(var,n,type)
3481# define PERLVARI(var,type,init) PL_##var = init;
3482# define PERLVARIC(var,type,init) PL_##var = init;
3483# include "intrpvar.h"
b7f7fff6 3484# include "thrdvar.h"
acfe0abc
GS
3485# undef PERLVAR
3486# undef PERLVARA
3487# undef PERLVARI
3488# undef PERLVARIC
cb68f92d
GS
3489#endif
3490
46ab3289
NC
3491 /* As these are inside a structure, PERLVARI isn't capable of initialising
3492 them */
6c3f0a89
NC
3493 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3494 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3495}
3496
76e3520e 3497STATIC void
cea2e8a9 3498S_init_main_stash(pTHX)
79072805 3499{
97aff369 3500 dVAR;
463ee0b2 3501 GV *gv;
6e72f9df 3502