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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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DM
15/* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
19 */
20
ae3f3efd
PS
21/* PSz 12 Nov 03
22 *
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
26 *
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
32 *
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
38 *
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
42 *
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
45 *
46 * References:
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
55 * CVE candidate:
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
011f1a1a
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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
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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
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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;
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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
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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 *
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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
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206
207/*
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208=head1 Embedding Functions
209
954c1994
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210=for apidoc perl_alloc
211
212Allocates a new Perl interpreter. See L<perlembed>.
213
214=cut
215*/
216
93a17b20 217PerlInterpreter *
cea2e8a9 218perl_alloc(void)
79072805 219{
cea2e8a9 220 PerlInterpreter *my_perl;
79072805 221
9f653bb5 222 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 223 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 224
e6827a76 225 S_init_tls_and_interp(my_perl);
7cb608b5 226#ifndef PERL_TRACK_MEMPOOL
07409e01 227 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
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228#else
229 Zero(my_perl, 1, PerlInterpreter);
230 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
231 return my_perl;
232#endif
79072805 233}
32e30700 234#endif /* PERL_IMPLICIT_SYS */
79072805 235
954c1994
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236/*
237=for apidoc perl_construct
238
239Initializes a new Perl interpreter. See L<perlembed>.
240
241=cut
242*/
243
79072805 244void
0cb96387 245perl_construct(pTHXx)
79072805 246{
27da23d5 247 dVAR;
ed6c66dd 248 PERL_UNUSED_ARG(my_perl);
8990e307 249#ifdef MULTIPLICITY
54aff467 250 init_interp();
ac27b0f5 251 PL_perl_destruct_level = 1;
54aff467
GS
252#else
253 if (PL_perl_destruct_level > 0)
254 init_interp();
255#endif
33f46ff6 256 /* Init the real globals (and main thread)? */
3280af22 257 if (!PL_linestr) {
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258 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
259
561b68a9 260 PL_linestr = newSV(79);
3280af22 261 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 262
3280af22 263 if (!SvREADONLY(&PL_sv_undef)) {
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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;
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MHM
283
284 SvREADONLY_on(&PL_sv_placeholder);
285 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 286 }
79072805 287
8aad04aa 288 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 289#ifdef PERL_USES_PL_PIDSTATUS
3280af22 290 PL_pidstatus = newHV();
ca0c25f6 291#endif
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292 }
293
396482e1 294 PL_rs = newSVpvs("\n");
dc92893f 295
cea2e8a9 296 init_stacks();
79072805 297
748a9306 298 init_ids();
3280af22 299 PL_lex_state = LEX_NOTPARSING;
a5f75d66 300
312caa8e 301 JMPENV_BOOTSTRAP;
f86702cc
PP
302 STATUS_ALL_SUCCESS;
303
0672f40e 304 init_i18nl10n(1);
36477c24 305 SET_NUMERIC_STANDARD();
0b5b802d 306
ab821d7f 307#if defined(LOCAL_PATCH_COUNT)
3280af22 308 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
309#endif
310
52853b95
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311#ifdef HAVE_INTERP_INTERN
312 sys_intern_init();
313#endif
314
3a1ee7e8 315 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 316
3280af22
NIS
317 PL_fdpid = newAV(); /* for remembering popen pids by fd */
318 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 319 PL_errors = newSVpvs("");
48c6b404 320 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
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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
29a861e7
NC
324 /* First entry is an array of empty elements */
325 Perl_av_create_and_push(aTHX_ &PL_regex_padav,(SV*)newAV());
13137afc 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
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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
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AB
337 HvSHAREKEYS_off(PL_strtab); /* mandatory */
338 hv_ksplit(PL_strtab, 512);
339
0631ea03
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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{
5174512c
NC
1329 dVAR;
1330
c301d606
DM
1331 if (PL_veto_cleanup)
1332 return;
1333
7cb608b5 1334#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1335 {
1336 /*
1337 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1338 * value as we're probably hunting memory leaks then
1339 */
1340 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1341 if (!s || atoi(s) == 0) {
1342 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1343 thread at thread exit. */
1344 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1345 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1346 }
1347 }
7cb608b5
NC
1348#endif
1349
acfe0abc 1350#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1351# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1352 {
acfe0abc 1353# ifdef NETWARE
7af12a34 1354 void *host = nw_internal_host;
acfe0abc 1355# else
7af12a34 1356 void *host = w32_internal_host;
acfe0abc 1357# endif
7af12a34 1358 PerlMem_free(aTHXx);
acfe0abc 1359# ifdef NETWARE
7af12a34 1360 nw_delete_internal_host(host);
acfe0abc 1361# else
7af12a34 1362 win32_delete_internal_host(host);
acfe0abc 1363# endif
7af12a34 1364 }
1c0ca838
GS
1365# else
1366 PerlMem_free(aTHXx);
1367# endif
acfe0abc
GS
1368#else
1369 PerlMem_free(aTHXx);
76e3520e 1370#endif
79072805
LW
1371}
1372
b7f7fff6 1373#if defined(USE_ITHREADS)
aebd1ac7
GA
1374/* provide destructors to clean up the thread key when libperl is unloaded */
1375#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1376
826955bd 1377#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1378#pragma fini "perl_fini"
666ad1ec
GA
1379#elif defined(__sun) && !defined(__GNUC__)
1380#pragma fini (perl_fini)
aebd1ac7
GA
1381#endif
1382
0dbb1585
AL
1383static void
1384#if defined(__GNUC__)
1385__attribute__((destructor))
aebd1ac7 1386#endif
de009b76 1387perl_fini(void)
aebd1ac7 1388{
27da23d5 1389 dVAR;
c301d606 1390 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1391 FREE_THREAD_KEY;
1392}
1393
1394#endif /* WIN32 */
1395#endif /* THREADS */
1396
4b556e6c 1397void
864dbfa3 1398Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1399{
97aff369 1400 dVAR;
3280af22
NIS
1401 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1402 PL_exitlist[PL_exitlistlen].fn = fn;
1403 PL_exitlist[PL_exitlistlen].ptr = ptr;
1404 ++PL_exitlistlen;
4b556e6c
JD
1405}
1406
56cf6df8
RGS
1407#ifdef HAS_PROCSELFEXE
1408/* This is a function so that we don't hold on to MAXPATHLEN
1409 bytes of stack longer than necessary
1410 */
1411STATIC void
e1ec3a88 1412S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1413{
1414 char buf[MAXPATHLEN];
1415 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1416
1417 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1418 includes a spurious NUL which will cause $^X to fail in system
1419 or backticks (this will prevent extensions from being built and
1420 many tests from working). readlink is not meant to add a NUL.
1421 Normal readlink works fine.
1422 */
1423 if (len > 0 && buf[len-1] == '\0') {
1424 len--;
1425 }
1426
1427 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1428 returning the text "unknown" from the readlink rather than the path
1429 to the executable (or returning an error from the readlink). Any valid
1430 path has a '/' in it somewhere, so use that to validate the result.
1431 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1432 */
1433 if (len > 0 && memchr(buf, '/', len)) {
1434 sv_setpvn(sv,buf,len);
1435 }
1436 else {
1437 sv_setpv(sv,arg0);
1438 }
1439}
1440#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1441
1442STATIC void
1443S_set_caret_X(pTHX) {
97aff369 1444 dVAR;
fafc274c 1445 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1446 if (tmpgv) {
1447#ifdef HAS_PROCSELFEXE
1448 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1449#else
1450#ifdef OS2
c69033f2 1451 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1452#else
c69033f2 1453 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1454#endif
1455#endif
1456 }
1457}
1458
954c1994
GS
1459/*
1460=for apidoc perl_parse
1461
1462Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1463
1464=cut
1465*/
1466
79072805 1467int
0cb96387 1468perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1469{
27da23d5 1470 dVAR;
6224f72b 1471 I32 oldscope;
6224f72b 1472 int ret;
db36c5a1 1473 dJMPENV;
8d063cd8 1474
ed6c66dd 1475 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 1476
a687059c
LW
1477#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1478#ifdef IAMSUID
1479#undef IAMSUID
cea2e8a9 1480 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1481setuid perl scripts securely.\n");
ae3f3efd 1482#endif /* IAMSUID */
a687059c
LW
1483#endif
1484
b0891165
JH
1485#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1486 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1487 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1488 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1489 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1490 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1491 if (!PL_rehash_seed_set)
1492 PL_rehash_seed = get_hash_seed();
b0891165 1493 {
9d4ba2ae 1494 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1495
1b6737cc
AL
1496 if (s && (atoi(s) == 1))
1497 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1498 }
1499#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1500
3280af22 1501 PL_origargc = argc;
e2975953 1502 PL_origargv = argv;
a0d0e21e 1503
a2722ac9
GA
1504 if (PL_origalen != 0) {
1505 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1506 }
1507 else {
3cb9023d
JH
1508 /* Set PL_origalen be the sum of the contiguous argv[]
1509 * elements plus the size of the env in case that it is
e9137a8e 1510 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1511 * as the maximum modifiable length of $0. In the worst case
1512 * the area we are able to modify is limited to the size of
43c32782 1513 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1514 * --jhi */
e1ec3a88 1515 const char *s = NULL;
54bfe034 1516 int i;
1b6737cc 1517 const UV mask =
7d8e7db3 1518 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1519 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1520 const UV aligned =
43c32782
JH
1521 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1522
1523 /* See if all the arguments are contiguous in memory. Note
1524 * that 'contiguous' is a loose term because some platforms
1525 * align the argv[] and the envp[]. If the arguments look
1526 * like non-aligned, assume that they are 'strictly' or
1527 * 'traditionally' contiguous. If the arguments look like
1528 * aligned, we just check that they are within aligned
1529 * PTRSIZE bytes. As long as no system has something bizarre
1530 * like the argv[] interleaved with some other data, we are
1531 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1532 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1533 while (*s) s++;
1534 for (i = 1; i < PL_origargc; i++) {
1535 if ((PL_origargv[i] == s + 1
43c32782 1536#ifdef OS2
c8941eeb 1537 || PL_origargv[i] == s + 2
43c32782 1538#endif
c8941eeb
JH
1539 )
1540 ||
1541 (aligned &&
1542 (PL_origargv[i] > s &&
1543 PL_origargv[i] <=
1544 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1545 )
1546 {
1547 s = PL_origargv[i];
1548 while (*s) s++;
1549 }
1550 else
1551 break;
54bfe034 1552 }
54bfe034 1553 }
3cb9023d 1554 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1555 if (s && PL_origenviron) {
9d419b5f 1556 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1557 ||
1558 (aligned &&
1559 (PL_origenviron[0] > s &&
1560 PL_origenviron[0] <=
1561 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1562 )
1563 {
9d419b5f 1564#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1565 s = PL_origenviron[0];
1566 while (*s) s++;
1567#endif
bd61b366 1568 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1569 /* Force copy of environment. */
1570 for (i = 1; PL_origenviron[i]; i++) {
1571 if (PL_origenviron[i] == s + 1
1572 ||
1573 (aligned &&
1574 (PL_origenviron[i] > s &&
1575 PL_origenviron[i] <=
1576 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1577 )
1578 {
1579 s = PL_origenviron[i];
1580 while (*s) s++;
1581 }
1582 else
1583 break;
54bfe034 1584 }
43c32782 1585 }
54bfe034 1586 }
2d2af554 1587 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1588 }
1589
3280af22 1590 if (PL_do_undump) {
a0d0e21e
LW
1591
1592 /* Come here if running an undumped a.out. */
1593
3280af22
NIS
1594 PL_origfilename = savepv(argv[0]);
1595 PL_do_undump = FALSE;
a0d0e21e 1596 cxstack_ix = -1; /* start label stack again */
748a9306 1597 init_ids();
b7975bdd
NC
1598 assert (!PL_tainted);
1599 TAINT;
1600 S_set_caret_X(aTHX);
1601 TAINT_NOT;
a0d0e21e
LW
1602 init_postdump_symbols(argc,argv,env);
1603 return 0;
1604 }
1605
3280af22 1606 if (PL_main_root) {
3280af22 1607 op_free(PL_main_root);
5f66b61c 1608 PL_main_root = NULL;
ff0cee69 1609 }
5f66b61c 1610 PL_main_start = NULL;
3280af22 1611 SvREFCNT_dec(PL_main_cv);
601f1833 1612 PL_main_cv = NULL;
79072805 1613
3280af22
NIS
1614 time(&PL_basetime);
1615 oldscope = PL_scopestack_ix;
599cee73 1616 PL_dowarn = G_WARN_OFF;
f86702cc 1617
14dd3ad8 1618 JMPENV_PUSH(ret);
6224f72b 1619 switch (ret) {
312caa8e 1620 case 0:
14dd3ad8 1621 parse_body(env,xsinit);
3c10abe3
AG
1622 if (PL_unitcheckav)
1623 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1624 if (PL_checkav)
1625 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1626 ret = 0;
1627 break;
6224f72b
GS
1628 case 1:
1629 STATUS_ALL_FAILURE;
1630 /* FALL THROUGH */
1631 case 2:
1632 /* my_exit() was called */
3280af22 1633 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1634 LEAVE;
1635 FREETMPS;
3280af22 1636 PL_curstash = PL_defstash;
3c10abe3
AG
1637 if (PL_unitcheckav)
1638 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1639 if (PL_checkav)
1640 call_list(oldscope, PL_checkav);
37038d91 1641 ret = STATUS_EXIT;
14dd3ad8 1642 break;
6224f72b 1643 case 3:
bf49b057 1644 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1645 ret = 1;
1646 break;
6224f72b 1647 }
14dd3ad8
GS
1648 JMPENV_POP;
1649 return ret;
1650}
1651
312caa8e 1652STATIC void *
14dd3ad8 1653S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1654{
27da23d5 1655 dVAR;
312caa8e 1656 int argc = PL_origargc;
8f42b153 1657 char **argv = PL_origargv;
e1ec3a88 1658 const char *scriptname = NULL;
312caa8e 1659 VOL bool dosearch = FALSE;
e1ec3a88 1660 const char *validarg = "";
312caa8e 1661 register SV *sv;
47f56822 1662 register char *s, c;
bd61b366 1663 const char *cddir = NULL;
ab019eaa 1664#ifdef USE_SITECUSTOMIZE
20ef40cf 1665 bool minus_f = FALSE;
ab019eaa 1666#endif
312caa8e 1667
3280af22 1668 sv_setpvn(PL_linestr,"",0);
396482e1 1669 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1670 SAVEFREESV(sv);
1671 init_main_stash();
54310121 1672
6224f72b
GS
1673 for (argc--,argv++; argc > 0; argc--,argv++) {
1674 if (argv[0][0] != '-' || !argv[0][1])
1675 break;
1676#ifdef DOSUID
1677 if (*validarg)
1678 validarg = " PHOOEY ";
1679 else
1680 validarg = argv[0];
ae3f3efd
PS
1681 /*
1682 * Can we rely on the kernel to start scripts with argv[1] set to
1683 * contain all #! line switches (the whole line)? (argv[0] is set to
1684 * the interpreter name, argv[2] to the script name; argv[3] and
1685 * above may contain other arguments.)
1686 */
13281fa4 1687#endif
6224f72b
GS
1688 s = argv[0]+1;
1689 reswitch:
47f56822 1690 switch ((c = *s)) {
729a02f2 1691 case 'C':
1d5472a9
GS
1692#ifndef PERL_STRICT_CR
1693 case '\r':
1694#endif
6224f72b
GS
1695 case ' ':
1696 case '0':
1697 case 'F':
1698 case 'a':
1699 case 'c':
1700 case 'd':
1701 case 'D':
1702 case 'h':
1703 case 'i':
1704 case 'l':
1705 case 'M':
1706 case 'm':
1707 case 'n':
1708 case 'p':
1709 case 's':
1710 case 'u':
1711 case 'U':
1712 case 'v':
599cee73
PM
1713 case 'W':
1714 case 'X':
6224f72b 1715 case 'w':
06492da6 1716 case 'A':
97bd5664 1717 if ((s = moreswitches(s)))
6224f72b
GS
1718 goto reswitch;
1719 break;
33b78306 1720
1dbad523 1721 case 't':
22f7c9c9 1722 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1723 if( !PL_tainting ) {
1724 PL_taint_warn = TRUE;
1725 PL_tainting = TRUE;
1726 }
1727 s++;
1728 goto reswitch;
6224f72b 1729 case 'T':
22f7c9c9 1730 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1731 PL_tainting = TRUE;
317ea90d 1732 PL_taint_warn = FALSE;
6224f72b
GS
1733 s++;
1734 goto reswitch;
f86702cc 1735
bc9b29db
RH
1736 case 'E':
1737 PL_minus_E = TRUE;
1738 /* FALL THROUGH */
6224f72b 1739 case 'e':
bf4acbe4
GS
1740#ifdef MACOS_TRADITIONAL
1741 /* ignore -e for Dev:Pseudo argument */
1742 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1743 break;
bf4acbe4 1744#endif
a52eba0e 1745 forbid_setid('e', -1);
3280af22 1746 if (!PL_e_script) {
396482e1 1747 PL_e_script = newSVpvs("");
0cb96387 1748 filter_add(read_e_script, NULL);
6224f72b
GS
1749 }
1750 if (*++s)
3280af22 1751 sv_catpv(PL_e_script, s);
6224f72b 1752 else if (argv[1]) {
3280af22 1753 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1754 argc--,argv++;
1755 }
1756 else
47f56822 1757 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1758 sv_catpvs(PL_e_script, "\n");
6224f72b 1759 break;
afe37c7d 1760
20ef40cf 1761 case 'f':
f5542d3a 1762#ifdef USE_SITECUSTOMIZE
20ef40cf 1763 minus_f = TRUE;
f5542d3a 1764#endif
20ef40cf
GA
1765 s++;
1766 goto reswitch;
1767
6224f72b 1768 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1769 forbid_setid('I', -1);
bd61b366 1770 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1771 argc--,argv++;
1772 }
6224f72b 1773 if (s && *s) {
0df16ed7 1774 STRLEN len = strlen(s);
aec46f14 1775 const char * const p = savepvn(s, len);
88fe16b2 1776 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1777 sv_catpvs(sv, "-I");
0df16ed7 1778 sv_catpvn(sv, p, len);
396482e1 1779 sv_catpvs(sv, " ");
6224f72b 1780 Safefree(p);
0df16ed7
GS
1781 }
1782 else
a67e862a 1783 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1784 break;
1785 case 'P':
a52eba0e 1786 forbid_setid('P', -1);
3280af22 1787 PL_preprocess = TRUE;
6224f72b
GS
1788 s++;
1789 goto reswitch;
1790 case 'S':
a52eba0e 1791 forbid_setid('S', -1);
6224f72b
GS
1792 dosearch = TRUE;
1793 s++;
1794 goto reswitch;
1795 case 'V':
7edfd0ef
NC
1796 {
1797 SV *opts_prog;
1798
29a861e7 1799 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
7edfd0ef
NC
1800 if (*++s != ':') {
1801 STRLEN opts;
1802
396482e1 1803 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1804#ifdef VMS
396482e1 1805 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1806#else
396482e1 1807 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1808#endif
7edfd0ef 1809 opts = SvCUR(opts_prog);
efcaa95b 1810
9cd7d3f2 1811 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1812# ifdef DEBUGGING
e2e4dbf1 1813 " DEBUGGING"
6224f72b 1814# endif
4f185743
NC
1815# ifdef DEBUG_LEAKING_SCALARS
1816 " DEBUG_LEAKING_SCALARS"
1817# endif
85e1fcb9 1818# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1819 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1820# endif
1821# ifdef FAKE_THREADS
e2e4dbf1 1822 " FAKE_THREADS"
85e1fcb9 1823# endif
6224f72b 1824# ifdef MULTIPLICITY
e2e4dbf1 1825 " MULTIPLICITY"
6224f72b 1826# endif
85e1fcb9 1827# ifdef MYMALLOC
e2e4dbf1 1828 " MYMALLOC"
85e1fcb9 1829# endif
3bcf5ed8
SP
1830# ifdef NO_MATHOMS
1831 " NO_MATHOMS"
1832# endif
85e1fcb9 1833# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1834 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1835# endif
1836# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1837 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1838# endif
1839# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1840 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1841# endif
1842# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1843 " PERL_IMPLICIT_SYS"
85e1fcb9 1844# endif
a724edfe
NC
1845# ifdef PERL_MAD
1846 " PERL_MAD"
1847# endif
85e1fcb9 1848# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1849 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1850# endif
1851# ifdef PERL_NEED_APPCTX
e2e4dbf1 1852 " PERL_NEED_APPCTX"
85e1fcb9
SH
1853# endif
1854# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1855 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1856# endif
1857# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1858 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1859# endif
9c0a4d5d
DM
1860# ifdef PERL_TRACK_MEMPOOL
1861 " PERL_TRACK_MEMPOOL"
1862# endif
417cd4a8
SP
1863# ifdef PERL_USE_SAFE_PUTENV
1864 " PERL_USE_SAFE_PUTENV"
1865# endif
ca0c25f6
NC
1866#ifdef PERL_USES_PL_PIDSTATUS
1867 " PERL_USES_PL_PIDSTATUS"
1868#endif
85e1fcb9 1869# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1870 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1871# endif
1872# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1873 " THREADS_HAVE_PIDS"
85e1fcb9 1874# endif
85e1fcb9 1875# ifdef USE_64_BIT_ALL
e2e4dbf1 1876 " USE_64_BIT_ALL"
ac5e8965 1877# endif
10cc9d2a 1878# ifdef USE_64_BIT_INT
e2e4dbf1 1879 " USE_64_BIT_INT"
10cc9d2a 1880# endif
85e1fcb9 1881# ifdef USE_ITHREADS
e2e4dbf1 1882 " USE_ITHREADS"
85e1fcb9
SH
1883# endif
1884# ifdef USE_LARGE_FILES
e2e4dbf1 1885 " USE_LARGE_FILES"
ac5e8965
JH
1886# endif
1887# ifdef USE_LONG_DOUBLE
e2e4dbf1 1888 " USE_LONG_DOUBLE"
ac5e8965 1889# endif
85e1fcb9 1890# ifdef USE_PERLIO
e2e4dbf1 1891 " USE_PERLIO"
53430762 1892# endif
85e1fcb9 1893# ifdef USE_REENTRANT_API
e2e4dbf1 1894 " USE_REENTRANT_API"
85e1fcb9
SH
1895# endif
1896# ifdef USE_SFIO
e2e4dbf1 1897 " USE_SFIO"
ac5e8965 1898# endif
20ef40cf 1899# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1900 " USE_SITECUSTOMIZE"
20ef40cf 1901# endif
85e1fcb9 1902# ifdef USE_SOCKS
e2e4dbf1 1903 " USE_SOCKS"
b363f7ed 1904# endif
e2e4dbf1 1905 );
efcaa95b 1906
7edfd0ef
NC
1907 while (SvCUR(opts_prog) > opts+76) {
1908 /* find last space after "options: " and before col 76
1909 */
efcaa95b 1910
7edfd0ef 1911 const char *space;
c4420975 1912 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1913 const char c = pv[opts+76];
1914 pv[opts+76] = '\0';
1915 space = strrchr(pv+opts+26, ' ');
1916 pv[opts+76] = c;
1917 if (!space) break; /* "Can't happen" */
efcaa95b 1918
7edfd0ef 1919 /* break the line before that space */
efcaa95b 1920
7edfd0ef 1921 opts = space - pv;
89529cee 1922 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1923 STR_WITH_LEN("\\n "));
7edfd0ef 1924 }
efcaa95b 1925
396482e1 1926 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1927
6224f72b 1928#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1929 if (LOCAL_PATCH_COUNT > 0) {
1930 int i;
396482e1 1931 sv_catpvs(opts_prog,
7edfd0ef
NC
1932 "\" Locally applied patches:\\n\",");
1933 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1934 if (PL_localpatches[i])
1935 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1936 0, PL_localpatches[i], 0);
1937 }
6224f72b 1938 }
6224f72b 1939#endif
7edfd0ef
NC
1940 Perl_sv_catpvf(aTHX_ opts_prog,
1941 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1942#ifdef __DATE__
1943# ifdef __TIME__
7edfd0ef
NC
1944 Perl_sv_catpvf(aTHX_ opts_prog,
1945 ",\" Compiled at %s %s\\n\"",__DATE__,
1946 __TIME__);
6224f72b 1947# else
7edfd0ef
NC
1948 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1949 __DATE__);
6224f72b
GS
1950# endif
1951#endif
396482e1 1952 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1953 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1954 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1955#ifdef __CYGWIN__
396482e1 1956 sv_catpvs(opts_prog,
7edfd0ef 1957 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1958#endif
396482e1 1959 sv_catpvs(opts_prog,
7edfd0ef
NC
1960 "print \" \\%ENV:\\n @env\\n\" if @env;"
1961 "print \" \\@INC:\\n @INC\\n\";");
1962 }
1963 else {
1964 ++s;
1965 opts_prog = Perl_newSVpvf(aTHX_
1966 "Config::config_vars(qw%c%s%c)",
1967 0, s, 0);
1968 s += strlen(s);
1969 }
1970 av_push(PL_preambleav, opts_prog);
1971 /* don't look for script or read stdin */
1972 scriptname = BIT_BUCKET;
1973 goto reswitch;
6224f72b 1974 }
6224f72b 1975 case 'x':
3280af22 1976 PL_doextract = TRUE;
6224f72b
GS
1977 s++;
1978 if (*s)
f4c556ac 1979 cddir = s;
6224f72b
GS
1980 break;
1981 case 0:
1982 break;
1983 case '-':
1984 if (!*++s || isSPACE(*s)) {
1985 argc--,argv++;
1986 goto switch_end;
1987 }
1988 /* catch use of gnu style long options */
1989 if (strEQ(s, "version")) {
dd374669 1990 s = (char *)"v";
6224f72b
GS
1991 goto reswitch;
1992 }
1993 if (strEQ(s, "help")) {
dd374669 1994 s = (char *)"h";
6224f72b
GS
1995 goto reswitch;
1996 }
1997 s--;
1998 /* FALL THROUGH */
1999 default:
cea2e8a9 2000 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2001 }
2002 }
6224f72b 2003 switch_end:
54310121 2004
f675dbe5
CB
2005 if (
2006#ifndef SECURE_INTERNAL_GETENV
2007 !PL_tainting &&
2008#endif
cf756827 2009 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2010 {
e1ec3a88 2011 const char *popt = s;
74288ac8
GS
2012 while (isSPACE(*s))
2013 s++;
317ea90d 2014 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 2015 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 2016 PL_tainting = TRUE;
317ea90d
MS
2017 PL_taint_warn = FALSE;
2018 }
74288ac8 2019 else {
bd61b366 2020 char *popt_copy = NULL;
74288ac8 2021 while (s && *s) {
4ea8f8fb 2022 char *d;
74288ac8
GS
2023 while (isSPACE(*s))
2024 s++;
2025 if (*s == '-') {
2026 s++;
2027 if (isSPACE(*s))
2028 continue;
2029 }
4ea8f8fb 2030 d = s;
74288ac8
GS
2031 if (!*s)
2032 break;
e4af53b0 2033 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 2034 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2035 while (++s && *s) {
2036 if (isSPACE(*s)) {
cf756827
GS
2037 if (!popt_copy) {
2038 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
2039 s = popt_copy + (s - popt);
2040 d = popt_copy + (d - popt);
2041 }
4ea8f8fb
MS
2042 *s++ = '\0';
2043 break;
2044 }
2045 }
1c4db469 2046 if (*d == 't') {
317ea90d
MS
2047 if( !PL_tainting ) {
2048 PL_taint_warn = TRUE;
2049 PL_tainting = TRUE;
2050 }
1c4db469 2051 } else {
97bd5664 2052 moreswitches(d);
1c4db469 2053 }
6224f72b 2054 }
6224f72b
GS
2055 }
2056 }
a0d0e21e 2057
20ef40cf
GA
2058#ifdef USE_SITECUSTOMIZE
2059 if (!minus_f) {
29a861e7
NC
2060 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2061 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
20ef40cf
GA
2062 }
2063#endif
2064
6224f72b
GS
2065 if (!scriptname)
2066 scriptname = argv[0];
3280af22 2067 if (PL_e_script) {
6224f72b
GS
2068 argc++,argv--;
2069 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2070 }
bd61b366 2071 else if (scriptname == NULL) {
6224f72b
GS
2072#ifdef MSDOS
2073 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2074 moreswitches("h");
6224f72b
GS
2075#endif
2076 scriptname = "-";
2077 }
2078
b7975bdd
NC
2079 /* Set $^X early so that it can be used for relocatable paths in @INC */
2080 assert (!PL_tainted);
2081 TAINT;
2082 S_set_caret_X(aTHX);
2083 TAINT_NOT;
6224f72b
GS
2084 init_perllib();
2085
a52eba0e
NC
2086 {
2087 int suidscript;
2088 const int fdscript
2089 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2090
a52eba0e 2091 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2092
64ca3a65 2093#ifndef PERL_MICRO
a52eba0e
NC
2094# if defined(SIGCHLD) || defined(SIGCLD)
2095 {
2096# ifndef SIGCHLD
2097# define SIGCHLD SIGCLD
2098# endif
2099 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2100 if (sigstate == (Sighandler_t) SIG_IGN) {
2101 if (ckWARN(WARN_SIGNAL))
2102 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2103 "Can't ignore signal CHLD, forcing to default");
2104 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2105 }
0b5b802d 2106 }
a52eba0e 2107# endif
64ca3a65 2108#endif
0b5b802d 2109
a52eba0e 2110 if (PL_doextract
bf4acbe4 2111#ifdef MACOS_TRADITIONAL
a52eba0e 2112 || gMacPerl_AlwaysExtract
bf4acbe4 2113#endif
a52eba0e 2114 ) {
faef540c
NC
2115
2116 /* This will croak if suidscript is >= 0, as -x cannot be used with
2117 setuid scripts. */
2118 forbid_setid('x', suidscript);
2119 /* Hence you can't get here if suidscript >= 0 */
2120
2121 find_beginning();
a52eba0e
NC
2122 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2123 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2124 }
f4c556ac 2125 }
6224f72b 2126
561b68a9 2127 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2128 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2129 CvUNIQUE_on(PL_compcv);
2130
dd2155a4 2131 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2132
0c4f7ff0 2133 boot_core_PerlIO();
6224f72b 2134 boot_core_UNIVERSAL();
09bef843 2135 boot_core_xsutils();
6224f72b
GS
2136
2137 if (xsinit)
acfe0abc 2138 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2139#ifndef PERL_MICRO
d0d72822 2140#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2141 init_os_extras();
6224f72b 2142#endif
64ca3a65 2143#endif
6224f72b 2144
29209bc5 2145#ifdef USE_SOCKS
1b9c9cf5
DH
2146# ifdef HAS_SOCKS5_INIT
2147 socks5_init(argv[0]);
2148# else
29209bc5 2149 SOCKSinit(argv[0]);
1b9c9cf5 2150# endif
ac27b0f5 2151#endif
29209bc5 2152
6224f72b
GS
2153 init_predump_symbols();
2154 /* init_postdump_symbols not currently designed to be called */
2155 /* more than once (ENV isn't cleared first, for example) */
2156 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2157 if (!PL_do_undump)
6224f72b
GS
2158 init_postdump_symbols(argc,argv,env);
2159
27da23d5
JH
2160 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2161 * or explicitly in some platforms.
085a54d9 2162 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2163 * look like the user wants to use UTF-8. */
a0fd4948 2164#if defined(__SYMBIAN32__)
27da23d5
JH
2165 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2166#endif
06e66572
JH
2167 if (PL_unicode) {
2168 /* Requires init_predump_symbols(). */
a05d7ebb 2169 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2170 IO* io;
2171 PerlIO* fp;
2172 SV* sv;
2173
a05d7ebb 2174 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2175 * and the default open disciplines. */
a05d7ebb
JH
2176 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2177 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2178 (fp = IoIFP(io)))
2179 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2180 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2181 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2182 (fp = IoOFP(io)))
2183 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2184 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2185 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2186 (fp = IoOFP(io)))
2187 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2188 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2189 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2190 SVt_PV)))) {
a05d7ebb
JH
2191 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2192 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2193 if (in) {
2194 if (out)
2195 sv_setpvn(sv, ":utf8\0:utf8", 11);
2196 else
2197 sv_setpvn(sv, ":utf8\0", 6);
2198 }
2199 else if (out)
2200 sv_setpvn(sv, "\0:utf8", 6);
2201 SvSETMAGIC(sv);
2202 }
b310b053
JH
2203 }
2204 }
2205
4ffa73a3
JH
2206 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2207 if (strEQ(s, "unsafe"))
2208 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2209 else if (strEQ(s, "safe"))
2210 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2211 else
2212 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2213 }
2214
81d86705
NC
2215#ifdef PERL_MAD
2216 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2217 PL_madskills = 1;
2218 PL_minus_c = 1;
2219 if (!s || !s[0])
2220 PL_xmlfp = PerlIO_stdout();
2221 else {
2222 PL_xmlfp = PerlIO_open(s, "w");
2223 if (!PL_xmlfp)
2224 Perl_croak(aTHX_ "Can't open %s", s);
2225 }
2226 my_setenv("PERL_XMLDUMP", Nullch); /* hide from subprocs */
2227 }
2228 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2229 PL_madskills = atoi(s);
2230 my_setenv("PERL_MADSKILLS", Nullch); /* hide from subprocs */
2231 }
2232#endif
2233
6224f72b
GS
2234 init_lexer();
2235
2236 /* now parse the script */
2237
93189314 2238 SETERRNO(0,SS_NORMAL);
3280af22 2239 PL_error_count = 0;
bf4acbe4
GS
2240#ifdef MACOS_TRADITIONAL
2241 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2242 if (PL_minus_c)
2243 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2244 else {
2245 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2246 MacPerl_MPWFileName(PL_origfilename));
2247 }
2248 }
2249#else
3280af22
NIS
2250 if (yyparse() || PL_error_count) {
2251 if (PL_minus_c)
cea2e8a9 2252 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2253 else {
cea2e8a9 2254 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2255 PL_origfilename);
6224f72b
GS
2256 }
2257 }
bf4acbe4 2258#endif
57843af0 2259 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2260 PL_curstash = PL_defstash;
2261 PL_preprocess = FALSE;
2262 if (PL_e_script) {
2263 SvREFCNT_dec(PL_e_script);
a0714e2c 2264 PL_e_script = NULL;
6224f72b
GS
2265 }
2266
3280af22 2267 if (PL_do_undump)
6224f72b
GS
2268 my_unexec();
2269
57843af0
GS
2270 if (isWARN_ONCE) {
2271 SAVECOPFILE(PL_curcop);
2272 SAVECOPLINE(PL_curcop);
3280af22 2273 gv_check(PL_defstash);
57843af0 2274 }
6224f72b
GS
2275
2276 LEAVE;
2277 FREETMPS;
2278
2279#ifdef MYMALLOC
2280 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2281 dump_mstats("after compilation:");
2282#endif
2283
2284 ENTER;
3280af22 2285 PL_restartop = 0;
312caa8e 2286 return NULL;
6224f72b
GS
2287}
2288
954c1994
GS
2289/*
2290=for apidoc perl_run
2291
2292Tells a Perl interpreter to run. See L<perlembed>.
2293
2294=cut
2295*/
2296
6224f72b 2297int
0cb96387 2298perl_run(pTHXx)
6224f72b 2299{
97aff369 2300 dVAR;
6224f72b 2301 I32 oldscope;
14dd3ad8 2302 int ret = 0;
db36c5a1 2303 dJMPENV;
6224f72b 2304
ed6c66dd 2305 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 2306
3280af22 2307 oldscope = PL_scopestack_ix;
96e176bf
CL
2308#ifdef VMS
2309 VMSISH_HUSHED = 0;
2310#endif
6224f72b 2311
14dd3ad8 2312 JMPENV_PUSH(ret);
6224f72b
GS
2313 switch (ret) {
2314 case 1:
2315 cxstack_ix = -1; /* start context stack again */
312caa8e 2316 goto redo_body;
14dd3ad8 2317 case 0: /* normal completion */
14dd3ad8
GS
2318 redo_body:
2319 run_body(oldscope);
14dd3ad8
GS
2320 /* FALL THROUGH */
2321 case 2: /* my_exit() */
3280af22 2322 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2323 LEAVE;
2324 FREETMPS;
3280af22 2325 PL_curstash = PL_defstash;
3a1ee7e8 2326 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2327 PL_endav && !PL_minus_c)
2328 call_list(oldscope, PL_endav);
6224f72b
GS
2329#ifdef MYMALLOC
2330 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2331 dump_mstats("after execution: ");
2332#endif
37038d91 2333 ret = STATUS_EXIT;
14dd3ad8 2334 break;
6224f72b 2335 case 3:
312caa8e
CS
2336 if (PL_restartop) {
2337 POPSTACK_TO(PL_mainstack);
2338 goto redo_body;
6224f72b 2339 }
bf49b057 2340 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2341 FREETMPS;
14dd3ad8
GS
2342 ret = 1;
2343 break;
6224f72b
GS
2344 }
2345
14dd3ad8
GS
2346 JMPENV_POP;
2347 return ret;
312caa8e
CS
2348}
2349
14dd3ad8 2350
dd374669 2351STATIC void
14dd3ad8
GS
2352S_run_body(pTHX_ I32 oldscope)
2353{
97aff369 2354 dVAR;
6224f72b 2355 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2356 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2357
3280af22 2358 if (!PL_restartop) {
81d86705
NC
2359#ifdef PERL_MAD
2360 if (PL_xmlfp) {
2361 xmldump_all();
2362 exit(0); /* less likely to core dump than my_exit(0) */
2363 }
2364#endif
6224f72b 2365 DEBUG_x(dump_all());
cf2782cd 2366#ifdef DEBUGGING
ecae49c0
NC
2367 if (!DEBUG_q_TEST)
2368 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2369#endif
b900a521
JH
2370 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2371 PTR2UV(thr)));
6224f72b 2372
3280af22 2373 if (PL_minus_c) {
bf4acbe4 2374#ifdef MACOS_TRADITIONAL
e69a2255
JH
2375 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2376 (gMacPerl_ErrorFormat ? "# " : ""),
2377 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2378#else
bf49b057 2379 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2380#endif
6224f72b
GS
2381 my_exit(0);
2382 }
3280af22 2383 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2384 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2385 if (PL_initav)
2386 call_list(oldscope, PL_initav);
6224f72b
GS
2387 }
2388
2389 /* do it */
2390
3280af22 2391 if (PL_restartop) {
533c011a 2392 PL_op = PL_restartop;
3280af22 2393 PL_restartop = 0;
cea2e8a9 2394 CALLRUNOPS(aTHX);
6224f72b 2395 }
3280af22
NIS
2396 else if (PL_main_start) {
2397 CvDEPTH(PL_main_cv) = 1;
533c011a 2398 PL_op = PL_main_start;
cea2e8a9 2399 CALLRUNOPS(aTHX);
6224f72b 2400 }
f6b3007c
JH
2401 my_exit(0);
2402 /* NOTREACHED */
6224f72b
GS
2403}
2404
954c1994 2405/*
ccfc67b7
JH
2406=head1 SV Manipulation Functions
2407
954c1994
GS
2408=for apidoc p||get_sv
2409
2410Returns the SV of the specified Perl scalar. If C<create> is set and the
2411Perl variable does not exist then it will be created. If C<create> is not
2412set and the variable does not exist then NULL is returned.
2413
2414=cut
2415*/
2416
6224f72b 2417SV*
864dbfa3 2418Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2419{
2420 GV *gv;
6224f72b
GS
2421 gv = gv_fetchpv(name, create, SVt_PV);
2422 if (gv)
2423 return GvSV(gv);
a0714e2c 2424 return NULL;
6224f72b
GS
2425}
2426
954c1994 2427/*
ccfc67b7
JH
2428=head1 Array Manipulation Functions
2429
954c1994
GS
2430=for apidoc p||get_av
2431
2432Returns the AV of the specified Perl array. If C<create> is set and the
2433Perl variable does not exist then it will be created. If C<create> is not
2434set and the variable does not exist then NULL is returned.
2435
2436=cut
2437*/
2438
6224f72b 2439AV*
864dbfa3 2440Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2441{
c4420975 2442 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2443 if (create)
2444 return GvAVn(gv);
2445 if (gv)
2446 return GvAV(gv);
7d49f689 2447 return NULL;
6224f72b
GS
2448}
2449
954c1994 2450/*
ccfc67b7
JH
2451=head1 Hash Manipulation Functions
2452
954c1994
GS
2453=for apidoc p||get_hv
2454
2455Returns the HV of the specified Perl hash. If C<create> is set and the
2456Perl variable does not exist then it will be created. If C<create> is not
2457set and the variable does not exist then NULL is returned.
2458
2459=cut
2460*/
2461
6224f72b 2462HV*
864dbfa3 2463Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2464{
890ce7af 2465 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2466 if (create)
2467 return GvHVn(gv);
2468 if (gv)
2469 return GvHV(gv);
5c284bb0 2470 return NULL;
a0d0e21e
LW
2471}
2472
954c1994 2473/*
ccfc67b7
JH
2474=head1 CV Manipulation Functions
2475
780a5241
NC
2476=for apidoc p||get_cvn_flags
2477
2478Returns the CV of the specified Perl subroutine. C<flags> are passed to
2479C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2480exist then it will be declared (which has the same effect as saying
2481C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2482then NULL is returned.
2483
954c1994
GS
2484=for apidoc p||get_cv
2485
780a5241 2486Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2487
2488=cut
2489*/
2490
a0d0e21e 2491CV*
780a5241 2492Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2493{
780a5241 2494 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2495 /* XXX this is probably not what they think they're getting.
2496 * It has the same effect as "sub name;", i.e. just a forward
2497 * declaration! */
780a5241
NC
2498 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2499 SV *const sv = newSVpvn(name,len);
2500 SvFLAGS(sv) |= flags & SVf_UTF8;
774d564b 2501 return newSUB(start_subparse(FALSE, 0),
780a5241 2502 newSVOP(OP_CONST, 0, sv),
5f66b61c 2503 NULL, NULL);
780a5241 2504 }
a0d0e21e 2505 if (gv)
8ebc5c01 2506 return GvCVu(gv);
601f1833 2507 return NULL;
a0d0e21e
LW
2508}
2509
780a5241
NC
2510CV*
2511Perl_get_cv(pTHX_ const char *name, I32 flags)
2512{
2513 return get_cvn_flags(name, strlen(name), flags);
2514}
2515
79072805
LW
2516/* Be sure to refetch the stack pointer after calling these routines. */
2517
954c1994 2518/*
ccfc67b7
JH
2519
2520=head1 Callback Functions
2521
954c1994
GS
2522=for apidoc p||call_argv
2523
2524Performs a callback to the specified Perl sub. See L<perlcall>.
2525
2526=cut
2527*/
2528
a0d0e21e 2529I32
8f42b153 2530Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2531
8ac85365
NIS
2532 /* See G_* flags in cop.h */
2533 /* null terminated arg list */
8990e307 2534{
97aff369 2535 dVAR;
a0d0e21e 2536 dSP;
8990e307 2537
924508f0 2538 PUSHMARK(SP);
a0d0e21e 2539 if (argv) {
8990e307 2540 while (*argv) {
a0d0e21e 2541 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2542 argv++;
2543 }
a0d0e21e 2544 PUTBACK;
8990e307 2545 }
864dbfa3 2546 return call_pv(sub_name, flags);
8990e307
LW
2547}
2548
954c1994
GS
2549/*
2550=for apidoc p||call_pv
2551
2552Performs a callback to the specified Perl sub. See L<perlcall>.
2553
2554=cut
2555*/
2556
a0d0e21e 2557I32
864dbfa3 2558Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2559 /* name of the subroutine */
2560 /* See G_* flags in cop.h */
a0d0e21e 2561{
864dbfa3 2562 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2563}
2564
954c1994
GS
2565/*
2566=for apidoc p||call_method
2567
2568Performs a callback to the specified Perl method. The blessed object must
2569be on the stack. See L<perlcall>.
2570
2571=cut
2572*/
2573
a0d0e21e 2574I32
864dbfa3 2575Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2576 /* name of the subroutine */
2577 /* See G_* flags in cop.h */
a0d0e21e 2578{
968b3946 2579 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2580}
2581
2582/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2583/*
2584=for apidoc p||call_sv
2585
2586Performs a callback to the Perl sub whose name is in the SV. See
2587L<perlcall>.
2588
2589=cut
2590*/
2591
a0d0e21e 2592I32
864dbfa3 2593Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2594 /* See G_* flags in cop.h */
a0d0e21e 2595{
27da23d5 2596 dVAR; dSP;
a0d0e21e 2597 LOGOP myop; /* fake syntax tree node */
968b3946 2598 UNOP method_op;
aa689395 2599 I32 oldmark;
8ea43dc8 2600 VOL I32 retval = 0;
a0d0e21e 2601 I32 oldscope;
54310121 2602 bool oldcatch = CATCH_GET;
6224f72b 2603 int ret;
c4420975 2604 OP* const oldop = PL_op;
db36c5a1 2605 dJMPENV;
1e422769 2606
a0d0e21e
LW
2607 if (flags & G_DISCARD) {
2608 ENTER;
2609 SAVETMPS;
2610 }
2611
aa689395 2612 Zero(&myop, 1, LOGOP);
5f66b61c 2613 myop.op_next = NULL;
f51d4af5 2614 if (!(flags & G_NOARGS))
aa689395 2615 myop.op_flags |= OPf_STACKED;
54310121
PP
2616 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2617 (flags & G_ARRAY) ? OPf_WANT_LIST :
2618 OPf_WANT_SCALAR);
462e5cf6 2619 SAVEOP();
533c011a 2620 PL_op = (OP*)&myop;
aa689395 2621
3280af22
NIS
2622 EXTEND(PL_stack_sp, 1);
2623 *++PL_stack_sp = sv;
aa689395 2624 oldmark = TOPMARK;
3280af22 2625 oldscope = PL_scopestack_ix;
a0d0e21e 2626
3280af22 2627 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2628 /* Handle first BEGIN of -d. */
3280af22 2629 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2630 /* Try harder, since this may have been a sighandler, thus
2631 * curstash may be meaningless. */
3280af22 2632 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2633 && !(flags & G_NODEBUG))
533c011a 2634 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2635
968b3946
GS
2636 if (flags & G_METHOD) {
2637 Zero(&method_op, 1, UNOP);
2638 method_op.op_next = PL_op;
2639 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2640 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2641 PL_op = (OP*)&method_op;
968b3946
GS
2642 }
2643
312caa8e 2644 if (!(flags & G_EVAL)) {
0cdb2077 2645 CATCH_SET(TRUE);
d6f07c05 2646 CALL_BODY_SUB((OP*)&myop);
312caa8e 2647 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2648 CATCH_SET(oldcatch);
312caa8e
CS
2649 }
2650 else {
d78bda3d 2651 myop.op_other = (OP*)&myop;
3280af22 2652 PL_markstack_ptr--;
edb2152a 2653 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2654 PL_markstack_ptr++;
a0d0e21e 2655
14dd3ad8 2656 JMPENV_PUSH(ret);
edb2152a 2657
6224f72b
GS
2658 switch (ret) {
2659 case 0:
14dd3ad8 2660 redo_body:
d6f07c05 2661 CALL_BODY_SUB((OP*)&myop);
312caa8e
CS
2662 retval = PL_stack_sp - (PL_stack_base + oldmark);
2663 if (!(flags & G_KEEPERR))
c69006e4 2664 sv_setpvn(ERRSV,"",0);
a0d0e21e 2665 break;
6224f72b 2666 case 1:
f86702cc 2667 STATUS_ALL_FAILURE;
a0d0e21e 2668 /* FALL THROUGH */
6224f72b 2669 case 2:
a0d0e21e 2670 /* my_exit() was called */
3280af22 2671 PL_curstash = PL_defstash;
a0d0e21e 2672 FREETMPS;
14dd3ad8 2673 JMPENV_POP;
cc3604b1 2674 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2675 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2676 my_exit_jump();
a0d0e21e 2677 /* NOTREACHED */
6224f72b 2678 case 3:
3280af22 2679 if (PL_restartop) {
533c011a 2680 PL_op = PL_restartop;
3280af22 2681 PL_restartop = 0;
312caa8e 2682 goto redo_body;
a0d0e21e 2683 }
3280af22 2684 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2685 if (flags & G_ARRAY)
2686 retval = 0;
2687 else {
2688 retval = 1;
3280af22 2689 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2690 }
312caa8e 2691 break;
a0d0e21e 2692 }
a0d0e21e 2693
edb2152a
NC
2694 if (PL_scopestack_ix > oldscope)
2695 delete_eval_scope();
14dd3ad8 2696 JMPENV_POP;
a0d0e21e 2697 }
1e422769 2698
a0d0e21e 2699 if (flags & G_DISCARD) {
3280af22 2700 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2701 retval = 0;
2702 FREETMPS;
2703 LEAVE;
2704 }
533c011a 2705 PL_op = oldop;
a0d0e21e
LW
2706 return retval;
2707}
2708
6e72f9df 2709/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2710
954c1994
GS
2711/*
2712=for apidoc p||eval_sv
2713
2714Tells Perl to C<eval> the string in the SV.
2715
2716=cut
2717*/
2718
a0d0e21e 2719I32
864dbfa3 2720Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2721
8ac85365 2722 /* See G_* flags in cop.h */
a0d0e21e 2723{
97aff369 2724 dVAR;
924508f0 2725 dSP;
a0d0e21e 2726 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2727 VOL I32 oldmark = SP - PL_stack_base;
2728 VOL I32 retval = 0;
6224f72b 2729 int ret;
c4420975 2730 OP* const oldop = PL_op;
db36c5a1 2731 dJMPENV;
84902520 2732
4633a7c4
LW
2733 if (flags & G_DISCARD) {
2734 ENTER;
2735 SAVETMPS;
2736 }
2737
462e5cf6 2738 SAVEOP();
533c011a
NIS
2739 PL_op = (OP*)&myop;
2740 Zero(PL_op, 1, UNOP);
3280af22
NIS
2741 EXTEND(PL_stack_sp, 1);
2742 *++PL_stack_sp = sv;
79072805 2743
4633a7c4
LW
2744 if (!(flags & G_NOARGS))
2745 myop.op_flags = OPf_STACKED;
5f66b61c 2746 myop.op_next = NULL;
6e72f9df 2747 myop.op_type = OP_ENTEREVAL;
54310121
PP
2748 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2749 (flags & G_ARRAY) ? OPf_WANT_LIST :
2750 OPf_WANT_SCALAR);
6e72f9df
PP
2751 if (flags & G_KEEPERR)
2752 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2753
dedbcade
DM
2754 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2755 * before a PUSHEVAL, which corrupts the stack after a croak */
2756 TAINT_PROPER("eval_sv()");
2757
14dd3ad8 2758 JMPENV_PUSH(ret);
6224f72b
GS
2759 switch (ret) {
2760 case 0:
14dd3ad8 2761 redo_body:
d6f07c05 2762 CALL_BODY_EVAL((OP*)&myop);
312caa8e
CS
2763 retval = PL_stack_sp - (PL_stack_base + oldmark);
2764 if (!(flags & G_KEEPERR))
c69006e4 2765 sv_setpvn(ERRSV,"",0);
4633a7c4 2766 break;
6224f72b 2767 case 1:
f86702cc 2768 STATUS_ALL_FAILURE;
4633a7c4 2769 /* FALL THROUGH */
6224f72b 2770 case 2:
4633a7c4 2771 /* my_exit() was called */
3280af22 2772 PL_curstash = PL_defstash;
4633a7c4 2773 FREETMPS;
14dd3ad8 2774 JMPENV_POP;
cc3604b1 2775 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2776 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2777 my_exit_jump();
4633a7c4 2778 /* NOTREACHED */
6224f72b 2779 case 3:
3280af22 2780 if (PL_restartop) {
533c011a 2781 PL_op = PL_restartop;
3280af22 2782 PL_restartop = 0;
312caa8e 2783 goto redo_body;
4633a7c4 2784 }
3280af22 2785 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2786 if (flags & G_ARRAY)
2787 retval = 0;
2788 else {
2789 retval = 1;
3280af22 2790 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2791 }
312caa8e 2792 break;
4633a7c4
LW
2793 }
2794
14dd3ad8 2795 JMPENV_POP;
4633a7c4 2796 if (flags & G_DISCARD) {
3280af22 2797 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2798 retval = 0;
2799 FREETMPS;
2800 LEAVE;
2801 }
533c011a 2802 PL_op = oldop;
4633a7c4
LW
2803 return retval;
2804}
2805
954c1994
GS
2806/*
2807=for apidoc p||eval_pv
2808
2809Tells Perl to C<eval> the given string and return an SV* result.
2810
2811=cut
2812*/
2813
137443ea 2814SV*
864dbfa3 2815Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2816{
97aff369 2817 dVAR;
137443ea
PP
2818 dSP;
2819 SV* sv = newSVpv(p, 0);
2820
864dbfa3 2821 eval_sv(sv, G_SCALAR);
137443ea
PP
2822 SvREFCNT_dec(sv);
2823
2824 SPAGAIN;
2825 sv = POPs;
2826 PUTBACK;
2827
2d8e6c8d 2828 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2829 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2830 }
137443ea
PP
2831
2832 return sv;
2833}
2834
4633a7c4
LW
2835/* Require a module. */
2836
954c1994 2837/*
ccfc67b7
JH
2838=head1 Embedding Functions
2839
954c1994
GS
2840=for apidoc p||require_pv
2841
7d3fb230
BS
2842Tells Perl to C<require> the file named by the string argument. It is
2843analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2844implemented that way; consider using load_module instead.
954c1994 2845
7d3fb230 2846=cut */
954c1994 2847
4633a7c4 2848void
864dbfa3 2849Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2850{
97aff369 2851 dVAR;
d3acc0f7 2852 dSP;
97aff369 2853 SV* sv;
e788e7d3 2854 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2855 PUTBACK;
be41e5d9
NC
2856 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2857 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2858 SPAGAIN;
2859 POPSTACK;
79072805
LW
2860}
2861
79072805 2862void
e1ec3a88 2863Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2864{
71315bf2 2865 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2866
c4420975 2867 if (gv)
14befaf4 2868 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2869}
2870
76e3520e 2871STATIC void
e1ec3a88 2872S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2873{
ab821d7f 2874 /* This message really ought to be max 23 lines.
75c72d73 2875 * Removed -h because the user already knows that option. Others? */
fb73857a 2876
27da23d5 2877 static const char * const usage_msg[] = {
aefc56c5
SF
2878"-0[octal] specify record separator (\\0, if no argument)",
2879"-A[mod][=pattern] activate all/given assertions",
2880"-a autosplit mode with -n or -p (splits $_ into @F)",
2881"-C[number/list] enables the listed Unicode features",
2882"-c check syntax only (runs BEGIN and CHECK blocks)",
2883"-d[:debugger] run program under debugger",
2884"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2885"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2886"-E program like -e, but enables all optional features",
aefc56c5 2887"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2888"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2889"-i[extension] edit <> files in place (makes backup if extension supplied)",
2890"-Idirectory specify @INC/#include directory (several -I's allowed)",
2891"-l[octal] enable line ending processing, specifies line terminator",
2892"-[mM][-]module execute \"use/no module...\" before executing program",
2893"-n assume \"while (<>) { ... }\" loop around program",
2894"-p assume loop like -n but print line also, like sed",
2895"-P run program through C preprocessor before compilation",
2896"-s enable rudimentary parsing for switches after programfile",
2897"-S look for programfile using PATH environment variable",
2898"-t enable tainting warnings",
2899"-T enable tainting checks",
2900"-u dump core after parsing program",
2901"-U allow unsafe operations",
2902"-v print version, subversion (includes VERY IMPORTANT perl info)",
2903"-V[:variable] print configuration summary (or a single Config.pm variable)",
2904"-w enable many useful warnings (RECOMMENDED)",
2905"-W enable all warnings",
2906"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2907"-X disable all warnings",
fb73857a
PP
2908"\n",
2909NULL
2910};
27da23d5 2911 const char * const *p = usage_msg;
fb73857a 2912
b0e47665
GS
2913 PerlIO_printf(PerlIO_stdout(),
2914 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2915 name);
fb73857a 2916 while (*p)
b0e47665 2917 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2918}
2919
b4ab917c
DM
2920/* convert a string of -D options (or digits) into an int.
2921 * sets *s to point to the char after the options */
2922
2923#ifdef DEBUGGING
2924int
e1ec3a88 2925Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2926{
27da23d5 2927 static const char * const usage_msgd[] = {
e6e64d9b
JC
2928 " Debugging flag values: (see also -d)",
2929 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2930 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2931 " l Context (loop) stack processing",
2932 " t Trace execution",
2933 " o Method and overloading resolution",
2934 " c String/numeric conversions",
2935 " P Print profiling info, preprocessor command for -P, source file input state",
2936 " m Memory allocation",
2937 " f Format processing",
2938 " r Regular expression parsing and execution",
2939 " x Syntax tree dump",
3679267a 2940 " u Tainting checks",
e6e64d9b
JC
2941 " H Hash dump -- usurps values()",
2942 " X Scratchpad allocation",
2943 " D Cleaning up",
2944 " S Thread synchronization",
2945 " T Tokenising",
2946 " R Include reference counts of dumped variables (eg when using -Ds)",
2947 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2948 " v Verbose: use in conjunction with other flags",
2949 " C Copy On Write",
2950 " A Consistency checks on internal structures",
3679267a 2951 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2952 NULL
2953 };
b4ab917c
DM
2954 int i = 0;
2955 if (isALPHA(**s)) {
2956 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2957 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2958
2959 for (; isALNUM(**s); (*s)++) {
c4420975 2960 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2961 if (d)
2962 i |= 1 << (d - debopts);
2963 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2964 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2965 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2966 }
2967 }
e6e64d9b 2968 else if (isDIGIT(**s)) {
b4ab917c
DM
2969 i = atoi(*s);
2970 for (; isALNUM(**s); (*s)++) ;
2971 }
ddcf8bc1 2972 else if (givehelp) {
06e869a4 2973 const char *const *p = usage_msgd;
e6e64d9b
JC
2974 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2975 }
b4ab917c
DM
2976# ifdef EBCDIC
2977 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2978 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2979 "-Dp not implemented on this platform\n");
2980# endif
2981 return i;
2982}
2983#endif
2984
79072805
LW
2985/* This routine handles any switches that can be given during run */
2986
2987char *
97bd5664 2988Perl_moreswitches(pTHX_ char *s)
79072805 2989{
27da23d5 2990 dVAR;
84c133a0 2991 UV rschar;
79072805
LW
2992
2993 switch (*s) {
2994 case '0':
a863c7d1 2995 {
f2095865 2996 I32 flags = 0;
a3b680e6 2997 STRLEN numlen;
f2095865
JH
2998
2999 SvREFCNT_dec(PL_rs);
3000 if (s[1] == 'x' && s[2]) {
a3b680e6 3001 const char *e = s+=2;
f2095865
JH
3002 U8 *tmps;
3003
a3b680e6
AL
3004 while (*e)
3005 e++;
f2095865
JH
3006 numlen = e - s;
3007 flags = PERL_SCAN_SILENT_ILLDIGIT;
3008 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3009 if (s + numlen < e) {
3010 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3011 numlen = 0;
3012 s--;
3013 }
396482e1 3014 PL_rs = newSVpvs("");
c5661c80 3015 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3016 tmps = (U8*)SvPVX(PL_rs);
3017 uvchr_to_utf8(tmps, rschar);
3018 SvCUR_set(PL_rs, UNISKIP(rschar));
3019 SvUTF8_on(PL_rs);
3020 }
3021 else {
3022 numlen = 4;
3023 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3024 if (rschar & ~((U8)~0))
3025 PL_rs = &PL_sv_undef;
3026 else if (!rschar && numlen >= 2)
396482e1 3027 PL_rs = newSVpvs("");
f2095865
JH
3028 else {
3029 char ch = (char)rschar;
3030 PL_rs = newSVpvn(&ch, 1);
3031 }
3032 }
800633c3 3033 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3034 return s + numlen;
a863c7d1 3035 }
46487f74 3036 case 'C':
a05d7ebb 3037 s++;
dd374669 3038 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3039 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3040 PL_utf8cache = -1;
46487f74 3041 return s;
2304df62 3042 case 'F':
3280af22 3043 PL_minus_F = TRUE;
ebce5377
RGS
3044 PL_splitstr = ++s;
3045 while (*s && !isSPACE(*s)) ++s;
e49e380e 3046 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3047 return s;
79072805 3048 case 'a':
3280af22 3049 PL_minus_a = TRUE;
79072805
LW
3050 s++;
3051 return s;
3052 case 'c':
3280af22 3053 PL_minus_c = TRUE;
79072805
LW
3054 s++;
3055 return s;
3056 case 'd':
97bd5664 3057 forbid_setid('d', -1);
4633a7c4 3058 s++;
2cbb2ee1
RGS
3059
3060 /* -dt indicates to the debugger that threads will be used */
3061 if (*s == 't' && !isALNUM(s[1])) {
3062 ++s;
3063 my_setenv("PERL5DB_THREADED", "1");
3064 }
3065
70c94a19
RR
3066 /* The following permits -d:Mod to accepts arguments following an =
3067 in the fashion that -MSome::Mod does. */
3068 if (*s == ':' || *s == '=') {
06b5626a 3069 const char *start;
396482e1 3070 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3071 start = ++s;
3072 /* We now allow -d:Module=Foo,Bar */
3073 while(isALNUM(*s) || *s==':') ++s;
3074 if (*s != '=')
3075 sv_catpv(sv, start);
3076 else {
3077 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3078 /* Don't use NUL as q// delimiter here, this string goes in the
3079 * environment. */
3080 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3081 }
4633a7c4 3082 s += strlen(s);
184f32ec 3083 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3084 }
ed094faf 3085 if (!PL_perldb) {
3280af22 3086 PL_perldb = PERLDB_ALL;
a0d0e21e 3087 init_debugger();
ed094faf 3088 }
79072805
LW
3089 return s;
3090 case 'D':
0453d815 3091 {
79072805 3092#ifdef DEBUGGING
97bd5664 3093 forbid_setid('D', -1);
b4ab917c 3094 s++;
dd374669 3095 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3096#else /* !DEBUGGING */
0453d815 3097 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3098 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3099 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3100 for (s++; isALNUM(*s); s++) ;
79072805 3101#endif
79072805 3102 return s;
0453d815 3103 }
4633a7c4 3104 case 'h':
ac27b0f5 3105 usage(PL_origargv[0]);
7ca617d0 3106 my_exit(0);
79072805 3107 case 'i':
43c5f42d 3108 Safefree(PL_inplace);
c030f24b
GH
3109#if defined(__CYGWIN__) /* do backup extension automagically */
3110 if (*(s+1) == '\0') {
c86a4f2e 3111 PL_inplace = savepvs(".bak");
c030f24b
GH
3112 return s+1;
3113 }
3114#endif /* __CYGWIN__ */
5ef5d758 3115 {
d4c19fe8 3116 const char * const start = ++s;
5ef5d758
NC
3117 while (*s && !isSPACE(*s))
3118 ++s;
3119
3120 PL_inplace = savepvn(start, s - start);
3121 }
7b8d334a 3122 if (*s) {
5ef5d758 3123 ++s;
7b8d334a 3124 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3125 s++;
7b8d334a 3126 }
fb73857a 3127 return s;
4e49a025 3128 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3129 forbid_setid('I', -1);
fb73857a
PP
3130 ++s;
3131 while (*s && isSPACE(*s))
3132 ++s;
3133 if (*s) {
774d564b 3134 char *e, *p;
0df16ed7
GS
3135 p = s;
3136 /* ignore trailing spaces (possibly followed by other switches) */
3137 do {
3138 for (e = p; *e && !isSPACE(*e); e++) ;
3139 p = e;
3140 while (isSPACE(*p))
3141 p++;
3142 } while (*p && *p != '-');
3143 e = savepvn(s, e-s);
88fe16b2 3144 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3145 Safefree(e);
3146 s = p;
3147 if (*s == '-')
3148 s++;
79072805
LW
3149 }
3150 else
a67e862a 3151 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3152 return s;
79072805 3153 case 'l':
3280af22 3154 PL_minus_l = TRUE;
79072805 3155 s++;
7889fe52
NIS
3156 if (PL_ors_sv) {
3157 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3158 PL_ors_sv = NULL;
7889fe52 3159 }
79072805 3160 if (isDIGIT(*s)) {
53305cf1 3161 I32 flags = 0;
a3b680e6 3162 STRLEN numlen;
396482e1 3163 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3164 numlen = 3 + (*s == '0');
3165 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3166 s += numlen;
3167 }
3168 else {
8bfdd7d9 3169 if (RsPARA(PL_rs)) {
396482e1 3170 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3171 }
3172 else {
8bfdd7d9 3173 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3174 }
79072805
LW
3175 }
3176 return s;
06492da6 3177 case 'A':
97bd5664 3178 forbid_setid('A', -1);
aefc56c5
SF
3179 s++;
3180 {
44f8325f 3181 char * const start = s;
396482e1 3182 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3183 while(isALNUM(*s) || *s == ':') ++s;
3184 if (s != start) {
396482e1 3185 sv_catpvs(sv, "::");
aefc56c5
SF
3186 sv_catpvn(sv, start, s-start);
3187 }
3188 if (*s == '=') {
0c5a913d 3189 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3190 s+=strlen(s);
3191 }
3192 else if (*s != '\0') {
551405c4 3193 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3194 }
29a861e7 3195 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
aefc56c5 3196 return s;
06492da6 3197 }
1a30305b 3198 case 'M':
97bd5664 3199 forbid_setid('M', -1); /* XXX ? */
1a30305b
PP
3200 /* FALL THROUGH */
3201 case 'm':
97bd5664 3202 forbid_setid('m', -1); /* XXX ? */
1a30305b 3203 if (*++s) {
a5f75d66 3204 char *start;
11343788 3205 SV *sv;
e1ec3a88 3206 const char *use = "use ";
a5f75d66 3207 /* -M-foo == 'no foo' */
d0043bd1
NC
3208 /* Leading space on " no " is deliberate, to make both
3209 possibilities the same length. */
3210 if (*s == '-') { use = " no "; ++s; }
3211 sv = newSVpvn(use,4);
a5f75d66 3212 start = s;
1a30305b 3213 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3214 while(isALNUM(*s) || *s==':') ++s;
3215 if (*s != '=') {
11343788 3216 sv_catpv(sv, start);
c07a80fd
PP
3217 if (*(start-1) == 'm') {
3218 if (*s != '\0')
cea2e8a9 3219 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3220 sv_catpvs( sv, " ()");
c07a80fd
PP
3221 }
3222 } else {
6df41af2 3223 if (s == start)
be98fb35
GS
3224 Perl_croak(aTHX_ "Module name required with -%c option",
3225 s[-1]);
11343788 3226 sv_catpvn(sv, start, s-start);
396482e1
GA
3227 sv_catpvs(sv, " split(/,/,q");
3228 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3229 sv_catpv(sv, ++s);
396482e1 3230 sv_catpvs(sv, "\0)");
c07a80fd 3231 }
1a30305b 3232 s += strlen(s);
29a861e7 3233 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3234 }
3235 else
9e81e6a1 3236 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3237 return s;
79072805 3238 case 'n':
3280af22 3239 PL_minus_n = TRUE;
79072805
LW
3240 s++;
3241 return s;
3242 case 'p':
3280af22 3243 PL_minus_p = TRUE;
79072805
LW
3244 s++;
3245 return s;
3246 case 's':
97bd5664 3247 forbid_setid('s', -1);
3280af22 3248 PL_doswitches = TRUE;
79072805
LW
3249 s++;
3250 return s;
6537fe72
MS
3251 case 't':
3252 if (!PL_tainting)
22f7c9c9 3253 TOO_LATE_FOR('t');
6537fe72
MS
3254 s++;
3255 return s;
463ee0b2 3256 case 'T':
3280af22 3257 if (!PL_tainting)
22f7c9c9 3258 TOO_LATE_FOR('T');
463ee0b2
LW
3259 s++;
3260 return s;
79072805 3261 case 'u':
bf4acbe4
GS
3262#ifdef MACOS_TRADITIONAL
3263 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3264#endif
3280af22 3265 PL_do_undump = TRUE;
79072805
LW
3266 s++;
3267 return s;
3268 case 'U':
3280af22 3269 PL_unsafe = TRUE;
79072805
LW
3270 s++;
3271 return s;
3272 case 'v':
d7aa5382 3273 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3274 upg_version(PL_patchlevel);
8e9464f1 3275#if !defined(DGUX)
b0e47665 3276 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3277 Perl_form(aTHX_ "\nThis is perl, %"SVf
3278#ifdef PERL_PATCHNUM
3279 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3280#endif
3281 " built for %s",
be2597df 3282 SVfARG(vstringify(PL_patchlevel)),
95b63a38 3283 ARCHNAME));
8e9464f1
JH
3284#else /* DGUX */
3285/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3286 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3287 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3288 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3289 PerlIO_printf(PerlIO_stdout(),
3290 Perl_form(aTHX_ " built under %s at %s %s\n",
3291 OSNAME, __DATE__, __TIME__));
3292 PerlIO_printf(PerlIO_stdout(),
3293 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3294 OSVERS));
8e9464f1
JH
3295#endif /* !DGUX */
3296
fb73857a
PP
3297#if defined(LOCAL_PATCH_COUNT)
3298 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3299 PerlIO_printf(PerlIO_stdout(),
3300 "\n(with %d registered patch%s, "
3301 "see perl -V for more detail)",
bb7a0f54 3302 LOCAL_PATCH_COUNT,
b0e47665 3303 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3304#endif
1a30305b 3305
b0e47665 3306 PerlIO_printf(PerlIO_stdout(),
34ce1597 3307 "\n\nCopyright 1987-2007, Larry Wall\n");
eae9c151
JH
3308#ifdef MACOS_TRADITIONAL
3309 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3310 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3311 "maintained by Chris Nandor\n");
eae9c151 3312#endif
79072805 3313#ifdef MSDOS
b0e47665
GS
3314 PerlIO_printf(PerlIO_stdout(),
3315 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3316#endif
3317#ifdef DJGPP
b0e47665
GS
3318 PerlIO_printf(PerlIO_stdout(),
3319 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3320 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3321#endif
79072805 3322#ifdef OS2
b0e47665
GS
3323 PerlIO_printf(PerlIO_stdout(),
3324 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3325 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3326#endif
79072805 3327#ifdef atarist
b0e47665
GS
3328 PerlIO_printf(PerlIO_stdout(),
3329 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3330#endif
a3f9223b 3331#ifdef __BEOS__
b0e47665
GS
3332 PerlIO_printf(PerlIO_stdout(),
3333 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3334#endif
1d84e8df 3335#ifdef MPE
b0e47665 3336 PerlIO_printf(PerlIO_stdout(),
e583a879 3337 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3338#endif
9d116dd7 3339#ifdef OEMVS
b0e47665
GS
3340 PerlIO_printf(PerlIO_stdout(),
3341 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3342#endif
495c5fdc 3343#ifdef __VOS__
b0e47665 3344 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3345 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3346#endif
092bebab 3347#ifdef __OPEN_VM
b0e47665
GS
3348 PerlIO_printf(PerlIO_stdout(),
3349 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3350#endif
a1a0e61e 3351#ifdef POSIX_BC
b0e47665
GS
3352 PerlIO_printf(PerlIO_stdout(),
3353 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3354#endif
61ae2fbf 3355#ifdef __MINT__
b0e47665
GS
3356 PerlIO_printf(PerlIO_stdout(),
3357 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3358#endif
f83d2536 3359#ifdef EPOC
b0e47665 3360 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3361 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3362#endif
e1caacb4 3363#ifdef UNDER_CE
b475b3e6
JH
3364 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3365 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3366 wce_hitreturn();
3367#endif
a0fd4948 3368#ifdef __SYMBIAN32__
27da23d5
JH
3369 PerlIO_printf(PerlIO_stdout(),
3370 "Symbian port by Nokia, 2004-2005\n");
3371#endif
baed7233
DL
3372#ifdef BINARY_BUILD_NOTICE
3373 BINARY_BUILD_NOTICE;
3374#endif
b0e47665
GS
3375 PerlIO_printf(PerlIO_stdout(),
3376 "\n\
79072805 3377Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3378GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3379Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3380this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3381Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3382 my_exit(0);
79072805 3383 case 'w':
b2e5e6ba 3384 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3385 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3386 }
599cee73
PM
3387 s++;
3388 return s;
3389 case 'W':
ac27b0f5 3390 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3391 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3392 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3393 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3394 s++;
3395 return s;
3396 case 'X':
ac27b0f5 3397 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3398 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3399 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3400 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3401 s++;
3402 return s;
a0d0e21e 3403 case '*':
79072805
LW
3404 case ' ':
3405 if (s[1] == '-') /* Additional switches on #! line. */
3406 return s+2;
3407 break;
a0d0e21e 3408 case '-':
79072805 3409 case 0:
51882d45 3410#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3411 case '\r':
3412#endif
79072805
LW
3413 case '\n':
3414 case '\t':
3415 break;
aa689395
PP
3416#ifdef ALTERNATE_SHEBANG
3417 case 'S': /* OS/2 needs -S on "extproc" line. */
3418 break;
3419#endif
a0d0e21e 3420 case 'P':
3280af22 3421 if (PL_preprocess)
a0d0e21e
LW
3422 return s+1;
3423 /* FALL THROUGH */
79072805 3424 default:
cea2e8a9 3425 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3426 }
bd61b366 3427 return NULL;
79072805
LW
3428}
3429
3430/* compliments of Tom Christiansen */
3431
3432/* unexec() can be found in the Gnu emacs distribution */
ee580363 3433/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3434
3435void
864dbfa3 3436Perl_my_unexec(pTHX)
79072805 3437{
b37c2d43 3438 PERL_UNUSED_CONTEXT;
79072805 3439#ifdef UNEXEC
b37c2d43
AL
3440 SV * prog = newSVpv(BIN_EXP, 0);
3441 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3442 int status = 1;
79072805
LW
3443 extern int etext;
3444
396482e1 3445 sv_catpvs(prog, "/perl");
396482e1 3446 sv_catpvs(file, ".perldump");
79072805 3447
ee580363
GS
3448 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3449 /* unexec prints msg to stderr in case of failure */
6ad3d225 3450 PerlProc_exit(status);
79072805 3451#else
a5f75d66
AD
3452# ifdef VMS
3453# include <lib$routines.h>
3454 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3455# elif defined(WIN32) || defined(__CYGWIN__)
3456 Perl_croak(aTHX_ "dump is not supported");
aa689395 3457# else
79072805 3458 ABORT(); /* for use with undump */
aa689395 3459# endif
a5f75d66 3460#endif
79072805
LW
3461}
3462
cb68f92d
GS
3463/* initialize curinterp */
3464STATIC void
cea2e8a9 3465S_init_interp(pTHX)
cb68f92d 3466{
97aff369 3467 dVAR;
acfe0abc
GS
3468#ifdef MULTIPLICITY
3469# define PERLVAR(var,type)
3470# define PERLVARA(var,n,type)
3471# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3472# define PERLVARI(var,type,init) aTHX->var = init;
3473# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3474# else
acfe0abc
GS
3475# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3476# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3477# endif
acfe0abc 3478# include "intrpvar.h"
b7f7fff6 3479# include "thrdvar.h"
acfe0abc
GS
3480# undef PERLVAR
3481# undef PERLVARA
3482# undef PERLVARI
3483# undef PERLVARIC
3484#else
3485# define PERLVAR(var,type)
3486# define PERLVARA(var,n,type)
3487# define PERLVARI(var,type,init) PL_##var = init;
3488# define PERLVARIC(var,type,init) PL_##var = init;
3489# include "intrpvar.h"
b7f7fff6 3490# include "thrdvar.h"
acfe0abc
GS
3491# undef PERLVAR
3492# undef PERLVARA
3493# undef PERLVARI
3494# undef PERLVARIC
cb68f92d
GS
3495#endif
3496
46ab3289
NC
3497 /* As these are inside a structure, PERLVARI isn't capable of initialising
3498 them */
6c3f0a89
NC
3499 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3500 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3501}