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move PL_rsfp into the PL_parser struct
[perl5.git] / perl.c
CommitLineData
a0d0e21e
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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
166f8a29
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
JH
85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
NC
95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
bf357333
NC
99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
2aa47728
NC
108#endif
109
5311654c
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110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
d6f07c05
AL
140#define CALL_BODY_EVAL(myop) \
141 if (PL_op == (myop)) \
142 PL_op = Perl_pp_entereval(aTHX); \
143 if (PL_op) \
144 CALLRUNOPS(aTHX);
145
146#define CALL_BODY_SUB(myop) \
147 if (PL_op == (myop)) \
148 PL_op = Perl_pp_entersub(aTHX); \
149 if (PL_op) \
150 CALLRUNOPS(aTHX);
151
152#define CALL_LIST_BODY(cv) \
153 PUSHMARK(PL_stack_sp); \
154 call_sv((SV*)(cv), G_EVAL|G_DISCARD);
155
e6827a76 156static void
daa7d858 157S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 158{
27da23d5 159 dVAR;
e6827a76
NC
160 if (!PL_curinterp) {
161 PERL_SET_INTERP(my_perl);
3db8f154 162#if defined(USE_ITHREADS)
e6827a76
NC
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
016af4f1
DM
170#ifdef PERL_IMPLICIT_CONTEXT
171 MUTEX_INIT(&PL_my_ctx_mutex);
172# endif
e6827a76 173 }
c0bce9aa
NC
174#if defined(USE_ITHREADS)
175 else
176#else
177 /* This always happens for non-ithreads */
178#endif
179 {
e6827a76
NC
180 PERL_SET_THX(my_perl);
181 }
182}
06d86050 183
32e30700
GS
184#ifdef PERL_IMPLICIT_SYS
185PerlInterpreter *
7766f137
GS
186perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
187 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
188 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
189 struct IPerlDir* ipD, struct IPerlSock* ipS,
190 struct IPerlProc* ipP)
191{
192 PerlInterpreter *my_perl;
9f653bb5 193 /* Newx() needs interpreter, so call malloc() instead */
32e30700 194 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 195 S_init_tls_and_interp(my_perl);
32e30700
GS
196 Zero(my_perl, 1, PerlInterpreter);
197 PL_Mem = ipM;
7766f137
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198 PL_MemShared = ipMS;
199 PL_MemParse = ipMP;
32e30700
GS
200 PL_Env = ipE;
201 PL_StdIO = ipStd;
202 PL_LIO = ipLIO;
203 PL_Dir = ipD;
204 PL_Sock = ipS;
205 PL_Proc = ipP;
7cb608b5 206 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 207
32e30700
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208 return my_perl;
209}
210#else
954c1994
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211
212/*
ccfc67b7
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213=head1 Embedding Functions
214
954c1994
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215=for apidoc perl_alloc
216
217Allocates a new Perl interpreter. See L<perlembed>.
218
219=cut
220*/
221
93a17b20 222PerlInterpreter *
cea2e8a9 223perl_alloc(void)
79072805 224{
cea2e8a9 225 PerlInterpreter *my_perl;
79072805 226
9f653bb5 227 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 228 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 229
e6827a76 230 S_init_tls_and_interp(my_perl);
7cb608b5 231#ifndef PERL_TRACK_MEMPOOL
07409e01 232 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
233#else
234 Zero(my_perl, 1, PerlInterpreter);
235 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
236 return my_perl;
237#endif
79072805 238}
32e30700 239#endif /* PERL_IMPLICIT_SYS */
79072805 240
954c1994
GS
241/*
242=for apidoc perl_construct
243
244Initializes a new Perl interpreter. See L<perlembed>.
245
246=cut
247*/
248
79072805 249void
0cb96387 250perl_construct(pTHXx)
79072805 251{
27da23d5 252 dVAR;
ed6c66dd 253 PERL_UNUSED_ARG(my_perl);
8990e307 254#ifdef MULTIPLICITY
54aff467 255 init_interp();
ac27b0f5 256 PL_perl_destruct_level = 1;
54aff467
GS
257#else
258 if (PL_perl_destruct_level > 0)
259 init_interp();
260#endif
34caed6d
DM
261 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
262
34caed6d
DM
263 /* set read-only and try to insure than we wont see REFCNT==0
264 very often */
265
266 SvREADONLY_on(&PL_sv_undef);
267 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
268
269 sv_setpv(&PL_sv_no,PL_No);
270 /* value lookup in void context - happens to have the side effect
271 of caching the numeric forms. */
272 SvIV(&PL_sv_no);
273 SvNV(&PL_sv_no);
274 SvREADONLY_on(&PL_sv_no);
275 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
276
277 sv_setpv(&PL_sv_yes,PL_Yes);
278 SvIV(&PL_sv_yes);
279 SvNV(&PL_sv_yes);
280 SvREADONLY_on(&PL_sv_yes);
281 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
282
283 SvREADONLY_on(&PL_sv_placeholder);
284 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
285
286 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 287#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 288 PL_pidstatus = newHV();
ca0c25f6 289#endif
79072805 290
396482e1 291 PL_rs = newSVpvs("\n");
dc92893f 292
cea2e8a9 293 init_stacks();
79072805 294
748a9306 295 init_ids();
a5f75d66 296
312caa8e 297 JMPENV_BOOTSTRAP;
f86702cc
PP
298 STATUS_ALL_SUCCESS;
299
0672f40e 300 init_i18nl10n(1);
36477c24 301 SET_NUMERIC_STANDARD();
0b5b802d 302
ab821d7f 303#if defined(LOCAL_PATCH_COUNT)
3280af22 304 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
305#endif
306
52853b95
GS
307#ifdef HAVE_INTERP_INTERN
308 sys_intern_init();
309#endif
310
3a1ee7e8 311 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 312
3280af22
NIS
313 PL_fdpid = newAV(); /* for remembering popen pids by fd */
314 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 315 PL_errors = newSVpvs("");
48c6b404 316 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
317 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
318 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 319#ifdef USE_ITHREADS
29a861e7
NC
320 /* First entry is an array of empty elements */
321 Perl_av_create_and_push(aTHX_ &PL_regex_padav,(SV*)newAV());
13137afc 322 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 323#endif
e5dd39fc 324#ifdef USE_REENTRANT_API
59bd0823 325 Perl_reentrant_init(aTHX);
e5dd39fc 326#endif
3d47000e
AB
327
328 /* Note that strtab is a rather special HV. Assumptions are made
329 about not iterating on it, and not adding tie magic to it.
330 It is properly deallocated in perl_destruct() */
331 PL_strtab = newHV();
332
3d47000e
AB
333 HvSHAREKEYS_off(PL_strtab); /* mandatory */
334 hv_ksplit(PL_strtab, 512);
335
0631ea03
AB
336#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
337 _dyld_lookup_and_bind
338 ("__environ", (unsigned long *) &environ_pointer, NULL);
339#endif /* environ */
340
2f42fcb0
JH
341#ifndef PERL_MICRO
342# ifdef USE_ENVIRON_ARRAY
0631ea03 343 PL_origenviron = environ;
2f42fcb0 344# endif
0631ea03
AB
345#endif
346
5311654c 347 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 348 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
349 * BeOS has those, but returns the wrong value.
350 * The HZ if not originally defined has been by now
351 * been defined as CLK_TCK, if available. */
dbc1d986 352#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
353 PL_clocktick = sysconf(_SC_CLK_TCK);
354 if (PL_clocktick <= 0)
355#endif
356 PL_clocktick = HZ;
357
081fc587
AB
358 PL_stashcache = newHV();
359
8cb289bd 360 PL_patchlevel = Perl_newSVpvf(aTHX_ "v%d.%d.%d", (int)PERL_REVISION,
e6830b13 361 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 362
27da23d5
JH
363#ifdef HAS_MMAP
364 if (!PL_mmap_page_size) {
365#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
366 {
367 SETERRNO(0, SS_NORMAL);
368# ifdef _SC_PAGESIZE
369 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
370# else
371 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
372# endif
373 if ((long) PL_mmap_page_size < 0) {
374 if (errno) {
44f8325f 375 SV * const error = ERRSV;
d4c19fe8 376 SvUPGRADE(error, SVt_PV);
0510663f 377 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
378 }
379 else
380 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
381 }
382 }
383#else
384# ifdef HAS_GETPAGESIZE
385 PL_mmap_page_size = getpagesize();
386# else
387# if defined(I_SYS_PARAM) && defined(PAGESIZE)
388 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
389# endif
390# endif
391#endif
392 if (PL_mmap_page_size <= 0)
393 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
394 (IV) PL_mmap_page_size);
395 }
396#endif /* HAS_MMAP */
397
398#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
399 PL_timesbase.tms_utime = 0;
400 PL_timesbase.tms_stime = 0;
401 PL_timesbase.tms_cutime = 0;
402 PL_timesbase.tms_cstime = 0;
403#endif
404
8990e307 405 ENTER;
79072805
LW
406}
407
954c1994 408/*
62375a60
NIS
409=for apidoc nothreadhook
410
411Stub that provides thread hook for perl_destruct when there are
412no threads.
413
414=cut
415*/
416
417int
4e9e3734 418Perl_nothreadhook(pTHX)
62375a60 419{
96a5add6 420 PERL_UNUSED_CONTEXT;
62375a60
NIS
421 return 0;
422}
423
41e4abd8
NC
424#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
425void
426Perl_dump_sv_child(pTHX_ SV *sv)
427{
428 ssize_t got;
bf357333
NC
429 const int sock = PL_dumper_fd;
430 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
431 union control_un control;
432 struct msghdr msg;
808ad2d0 433 struct iovec vec[2];
bf357333 434 struct cmsghdr *cmptr;
808ad2d0
NC
435 int returned_errno;
436 unsigned char buffer[256];
41e4abd8 437
bf357333 438 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
439 return;
440
441 PerlIO_flush(Perl_debug_log);
442
bf357333
NC
443 /* All these shenanigans are to pass a file descriptor over to our child for
444 it to dump out to. We can't let it hold open the file descriptor when it
445 forks, as the file descriptor it will dump to can turn out to be one end
446 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 447 be open, the wait would be forever.) */
bf357333
NC
448
449 msg.msg_control = control.control;
450 msg.msg_controllen = sizeof(control.control);
451 /* We're a connected socket so we don't need a destination */
452 msg.msg_name = NULL;
453 msg.msg_namelen = 0;
454 msg.msg_iov = vec;
808ad2d0 455 msg.msg_iovlen = 1;
bf357333
NC
456
457 cmptr = CMSG_FIRSTHDR(&msg);
458 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
459 cmptr->cmsg_level = SOL_SOCKET;
460 cmptr->cmsg_type = SCM_RIGHTS;
461 *((int *)CMSG_DATA(cmptr)) = 1;
462
463 vec[0].iov_base = (void*)&sv;
464 vec[0].iov_len = sizeof(sv);
465 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
466
467 if(got < 0) {
bf357333 468 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
469 abort();
470 }
bf357333
NC
471 if(got < sizeof(sv)) {
472 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
473 abort();
474 }
475
808ad2d0
NC
476 /* Return protocol is
477 int: errno value
478 unsigned char: length of location string (0 for empty)
479 unsigned char*: string (not terminated)
480 */
481 vec[0].iov_base = (void*)&returned_errno;
482 vec[0].iov_len = sizeof(returned_errno);
483 vec[1].iov_base = buffer;
484 vec[1].iov_len = 1;
485
486 got = readv(sock, vec, 2);
41e4abd8
NC
487
488 if(got < 0) {
489 perror("Debug leaking scalars parent read failed");
808ad2d0 490 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
491 abort();
492 }
808ad2d0 493 if(got < sizeof(returned_errno) + 1) {
41e4abd8 494 perror("Debug leaking scalars parent short read");
808ad2d0 495 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
496 abort();
497 }
498
808ad2d0
NC
499 if (*buffer) {
500 got = read(sock, buffer + 1, *buffer);
501 if(got < 0) {
502 perror("Debug leaking scalars parent read 2 failed");
503 PerlIO_flush(PerlIO_stderr());
504 abort();
505 }
506
507 if(got < *buffer) {
508 perror("Debug leaking scalars parent short read 2");
509 PerlIO_flush(PerlIO_stderr());
510 abort();
511 }
512 }
513
514 if (returned_errno || *buffer) {
515 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
516 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
517 returned_errno, strerror(returned_errno));
41e4abd8
NC
518 }
519}
520#endif
521
62375a60 522/*
954c1994
GS
523=for apidoc perl_destruct
524
525Shuts down a Perl interpreter. See L<perlembed>.
526
527=cut
528*/
529
31d77e54 530int
0cb96387 531perl_destruct(pTHXx)
79072805 532{
27da23d5 533 dVAR;
8ea43dc8 534 VOL int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 535 HV *hv;
2aa47728 536#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
537 pid_t child;
538#endif
8990e307 539
ed6c66dd 540 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 541
7766f137
GS
542 /* wait for all pseudo-forked children to finish */
543 PERL_WAIT_FOR_CHILDREN;
544
3280af22 545 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
546#ifdef DEBUGGING
547 {
9d4ba2ae
AL
548 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
549 if (s) {
e1ec3a88 550 const int i = atoi(s);
5f05dabc
PP
551 if (destruct_level < i)
552 destruct_level = i;
553 }
4633a7c4
LW
554 }
555#endif
556
27da23d5 557 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
558 dJMPENV;
559 int x = 0;
560
561 JMPENV_PUSH(x);
1b6737cc 562 PERL_UNUSED_VAR(x);
f3faeb53
AB
563 if (PL_endav && !PL_minus_c)
564 call_list(PL_scopestack_ix, PL_endav);
565 JMPENV_POP;
26f423df 566 }
f3faeb53 567 LEAVE;
a0d0e21e
LW
568 FREETMPS;
569
e00b64d4 570 /* Need to flush since END blocks can produce output */
f13a2bc0 571 my_fflush_all();
e00b64d4 572
62375a60
NIS
573 if (CALL_FPTR(PL_threadhook)(aTHX)) {
574 /* Threads hook has vetoed further cleanup */
c301d606 575 PL_veto_cleanup = TRUE;
37038d91 576 return STATUS_EXIT;
62375a60
NIS
577 }
578
2aa47728
NC
579#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
580 if (destruct_level != 0) {
581 /* Fork here to create a child. Our child's job is to preserve the
582 state of scalars prior to destruction, so that we can instruct it
583 to dump any scalars that we later find have leaked.
584 There's no subtlety in this code - it assumes POSIX, and it doesn't
585 fail gracefully */
586 int fd[2];
587
588 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
589 perror("Debug leaking scalars socketpair failed");
590 abort();
591 }
592
593 child = fork();
594 if(child == -1) {
595 perror("Debug leaking scalars fork failed");
596 abort();
597 }
598 if (!child) {
599 /* We are the child */
3125a5a4
NC
600 const int sock = fd[1];
601 const int debug_fd = PerlIO_fileno(Perl_debug_log);
602 int f;
808ad2d0
NC
603 const char *where;
604 /* Our success message is an integer 0, and a char 0 */
605 static const char success[sizeof(int) + 1];
3125a5a4 606
2aa47728 607 close(fd[0]);
2aa47728 608
3125a5a4
NC
609 /* We need to close all other file descriptors otherwise we end up
610 with interesting hangs, where the parent closes its end of a
611 pipe, and sits waiting for (another) child to terminate. Only
612 that child never terminates, because it never gets EOF, because
bf357333
NC
613 we also have the far end of the pipe open. We even need to
614 close the debugging fd, because sometimes it happens to be one
615 end of a pipe, and a process is waiting on the other end for
616 EOF. Normally it would be closed at some point earlier in
617 destruction, but if we happen to cause the pipe to remain open,
618 EOF never occurs, and we get an infinite hang. Hence all the
619 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
620
621 f = sysconf(_SC_OPEN_MAX);
622 if(f < 0) {
808ad2d0
NC
623 where = "sysconf failed";
624 goto abort;
3125a5a4
NC
625 }
626 while (f--) {
627 if (f == sock)
628 continue;
3125a5a4
NC
629 close(f);
630 }
631
2aa47728
NC
632 while (1) {
633 SV *target;
bf357333
NC
634 union control_un control;
635 struct msghdr msg;
636 struct iovec vec[1];
637 struct cmsghdr *cmptr;
638 ssize_t got;
639 int got_fd;
640
641 msg.msg_control = control.control;
642 msg.msg_controllen = sizeof(control.control);
643 /* We're a connected socket so we don't need a source */
644 msg.msg_name = NULL;
645 msg.msg_namelen = 0;
646 msg.msg_iov = vec;
647 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
648
649 vec[0].iov_base = (void*)&target;
650 vec[0].iov_len = sizeof(target);
651
652 got = recvmsg(sock, &msg, 0);
2aa47728
NC
653
654 if(got == 0)
655 break;
656 if(got < 0) {
808ad2d0
NC
657 where = "recv failed";
658 goto abort;
2aa47728
NC
659 }
660 if(got < sizeof(target)) {
808ad2d0
NC
661 where = "short recv";
662 goto abort;
2aa47728 663 }
bf357333 664
808ad2d0
NC
665 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
666 where = "no cmsg";
667 goto abort;
668 }
669 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
670 where = "wrong cmsg_len";
671 goto abort;
672 }
673 if(cmptr->cmsg_level != SOL_SOCKET) {
674 where = "wrong cmsg_level";
675 goto abort;
676 }
677 if(cmptr->cmsg_type != SCM_RIGHTS) {
678 where = "wrong cmsg_type";
679 goto abort;
680 }
bf357333
NC
681
682 got_fd = *(int*)CMSG_DATA(cmptr);
683 /* For our last little bit of trickery, put the file descriptor
684 back into Perl_debug_log, as if we never actually closed it
685 */
808ad2d0
NC
686 if(got_fd != debug_fd) {
687 if (dup2(got_fd, debug_fd) == -1) {
688 where = "dup2";
689 goto abort;
690 }
691 }
2aa47728 692 sv_dump(target);
bf357333 693
2aa47728
NC
694 PerlIO_flush(Perl_debug_log);
695
808ad2d0 696 got = write(sock, &success, sizeof(success));
2aa47728
NC
697
698 if(got < 0) {
808ad2d0
NC
699 where = "write failed";
700 goto abort;
2aa47728 701 }
808ad2d0
NC
702 if(got < sizeof(success)) {
703 where = "short write";
704 goto abort;
2aa47728
NC
705 }
706 }
707 _exit(0);
808ad2d0
NC
708 abort:
709 {
710 int send_errno = errno;
711 unsigned char length = (unsigned char) strlen(where);
712 struct iovec failure[3] = {
713 {(void*)&send_errno, sizeof(send_errno)},
714 {&length, 1},
715 {(void*)where, length}
716 };
717 int got = writev(sock, failure, 3);
718 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
719 in the parent if we try to read from the socketpair after the
720 child has exited, even if there was data to read.
721 So sleep a bit to give the parent a fighting chance of
722 reading the data. */
723 sleep(2);
724 _exit((got == -1) ? errno : 0);
725 }
bf357333 726 /* End of child. */
2aa47728 727 }
41e4abd8 728 PL_dumper_fd = fd[0];
2aa47728
NC
729 close(fd[1]);
730 }
731#endif
732
ff0cee69
PP
733 /* We must account for everything. */
734
735 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
736 /* Do this now, because destroying ops can cause new SVs to be generated
737 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
738 PL_curcop to point to a valid op from which the filename structure
739 member is copied. */
740 PL_curcop = &PL_compiling;
3280af22 741 if (PL_main_root) {
4e380990
DM
742 /* ensure comppad/curpad to refer to main's pad */
743 if (CvPADLIST(PL_main_cv)) {
744 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
745 }
3280af22 746 op_free(PL_main_root);
5f66b61c 747 PL_main_root = NULL;
a0d0e21e 748 }
5f66b61c 749 PL_main_start = NULL;
3280af22 750 SvREFCNT_dec(PL_main_cv);
601f1833 751 PL_main_cv = NULL;
24d3c518 752 PL_dirty = TRUE;
ff0cee69 753
13621cfb
NIS
754 /* Tell PerlIO we are about to tear things apart in case
755 we have layers which are using resources that should
756 be cleaned up now.
757 */
758
759 PerlIO_destruct(aTHX);
760
3280af22 761 if (PL_sv_objcount) {
a0d0e21e
LW
762 /*
763 * Try to destruct global references. We do this first so that the
764 * destructors and destructees still exist. Some sv's might remain.
765 * Non-referenced objects are on their own.
766 */
a0d0e21e 767 sv_clean_objs();
bf9cdc68 768 PL_sv_objcount = 0;
a0de6cf5 769 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 770 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
771 }
772
5cd24f17 773 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 774 SvREFCNT_dec(PL_warnhook);
a0714e2c 775 PL_warnhook = NULL;
3280af22 776 SvREFCNT_dec(PL_diehook);
a0714e2c 777 PL_diehook = NULL;
5cd24f17 778
4b556e6c 779 /* call exit list functions */
3280af22 780 while (PL_exitlistlen-- > 0)
acfe0abc 781 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 782
3280af22 783 Safefree(PL_exitlist);
4b556e6c 784
1c4916e5
CB
785 PL_exitlist = NULL;
786 PL_exitlistlen = 0;
787
551a8b83 788 /* jettison our possibly duplicated environment */
4b647fb0
DM
789 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
790 * so we certainly shouldn't free it here
791 */
2f42fcb0 792#ifndef PERL_MICRO
4b647fb0 793#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 794 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
795#ifdef USE_ITHREADS
796 /* only main thread can free environ[0] contents */
797 && PL_curinterp == aTHX
798#endif
799 )
800 {
551a8b83
JH
801 I32 i;
802
803 for (i = 0; environ[i]; i++)
4b420006 804 safesysfree(environ[i]);
0631ea03 805
4b420006
JH
806 /* Must use safesysfree() when working with environ. */
807 safesysfree(environ);
551a8b83
JH
808
809 environ = PL_origenviron;
810 }
811#endif
2f42fcb0 812#endif /* !PERL_MICRO */
551a8b83 813
30985c42
JH
814 if (destruct_level == 0) {
815
816 DEBUG_P(debprofdump());
817
818#if defined(PERLIO_LAYERS)
819 /* No more IO - including error messages ! */
820 PerlIO_cleanup(aTHX);
821#endif
822
823 CopFILE_free(&PL_compiling);
824 CopSTASH_free(&PL_compiling);
825
826 /* The exit() function will do everything that needs doing. */
827 return STATUS_EXIT;
828 }
829
804ffa60 830 /* reset so print() ends up where we expect */
a0714e2c 831 setdefout(NULL);
804ffa60 832
5f8cb046
DM
833#ifdef USE_ITHREADS
834 /* the syntax tree is shared between clones
835 * so op_free(PL_main_root) only ReREFCNT_dec's
836 * REGEXPs in the parent interpreter
837 * we need to manually ReREFCNT_dec for the clones
838 */
839 {
840 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 841 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
842
843 while (i) {
c4420975 844 SV * const resv = ary[--i];
35061a7e
DM
845
846 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 847 /* this is PL_reg_curpm, already freed
35061a7e
DM
848 * flag is set in regexec.c:S_regtry
849 */
850 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 851 }
1cc8b4c5
AB
852 else if(SvREPADTMP(resv)) {
853 SvREPADTMP_off(resv);
854 }
a560f29b
NC
855 else if(SvIOKp(resv)) {
856 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
857 ReREFCNT_dec(re);
858 }
859 }
860 }
861 SvREFCNT_dec(PL_regex_padav);
7d49f689 862 PL_regex_padav = NULL;
5f8cb046
DM
863 PL_regex_pad = NULL;
864#endif
865
081fc587
AB
866 SvREFCNT_dec((SV*) PL_stashcache);
867 PL_stashcache = NULL;
868
5f05dabc
PP
869 /* loosen bonds of global variables */
870
2f9285f8
DM
871 /* XXX can PL_parser still be non-null here? */
872 if(PL_parser && PL_parser->rsfp) {
873 (void)PerlIO_close(PL_parser->rsfp);
874 PL_parser->rsfp = NULL;
8ebc5c01
PP
875 }
876
877 /* Filters for program text */
3280af22 878 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 879 PL_rsfp_filters = NULL;
8ebc5c01 880
84386e14
RGS
881 if (PL_minus_F) {
882 Safefree(PL_splitstr);
883 PL_splitstr = NULL;
884 }
885
8ebc5c01 886 /* switches */
3280af22
NIS
887 PL_preprocess = FALSE;
888 PL_minus_n = FALSE;
889 PL_minus_p = FALSE;
890 PL_minus_l = FALSE;
891 PL_minus_a = FALSE;
892 PL_minus_F = FALSE;
893 PL_doswitches = FALSE;
599cee73 894 PL_dowarn = G_WARN_OFF;
3280af22
NIS
895 PL_doextract = FALSE;
896 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
897 PL_unsafe = FALSE;
898
899 Safefree(PL_inplace);
bd61b366 900 PL_inplace = NULL;
a7cb1f99 901 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
902
903 if (PL_e_script) {
904 SvREFCNT_dec(PL_e_script);
a0714e2c 905 PL_e_script = NULL;
8ebc5c01
PP
906 }
907
bf9cdc68
RG
908 PL_perldb = 0;
909
8ebc5c01
PP
910 /* magical thingies */
911
7889fe52 912 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 913 PL_ofs_sv = NULL;
5f05dabc 914
7889fe52 915 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 916 PL_ors_sv = NULL;
8ebc5c01 917
3280af22 918 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 919 PL_rs = NULL;
dc92893f 920
d33b2eba 921 Safefree(PL_osname); /* $^O */
bd61b366 922 PL_osname = NULL;
5f05dabc 923
3280af22 924 SvREFCNT_dec(PL_statname);
a0714e2c
SS
925 PL_statname = NULL;
926 PL_statgv = NULL;
5f05dabc 927
8ebc5c01
PP
928 /* defgv, aka *_ should be taken care of elsewhere */
929
8ebc5c01 930 /* clean up after study() */
3280af22 931 SvREFCNT_dec(PL_lastscream);
a0714e2c 932 PL_lastscream = NULL;
3280af22
NIS
933 Safefree(PL_screamfirst);
934 PL_screamfirst = 0;
935 Safefree(PL_screamnext);
936 PL_screamnext = 0;
8ebc5c01 937
7d5ea4e7
GS
938 /* float buffer */
939 Safefree(PL_efloatbuf);
bd61b366 940 PL_efloatbuf = NULL;
7d5ea4e7
GS
941 PL_efloatsize = 0;
942
8ebc5c01 943 /* startup and shutdown function lists */
3280af22 944 SvREFCNT_dec(PL_beginav);
5a837c8f 945 SvREFCNT_dec(PL_beginav_save);
3280af22 946 SvREFCNT_dec(PL_endav);
7d30b5c4 947 SvREFCNT_dec(PL_checkav);
ece599bd 948 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
949 SvREFCNT_dec(PL_unitcheckav);
950 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 951 SvREFCNT_dec(PL_initav);
7d49f689
NC
952 PL_beginav = NULL;
953 PL_beginav_save = NULL;
954 PL_endav = NULL;
955 PL_checkav = NULL;
956 PL_checkav_save = NULL;
3c10abe3
AG
957 PL_unitcheckav = NULL;
958 PL_unitcheckav_save = NULL;
7d49f689 959 PL_initav = NULL;
5618dfe8 960
8ebc5c01 961 /* shortcuts just get cleared */
a0714e2c
SS
962 PL_envgv = NULL;
963 PL_incgv = NULL;
964 PL_hintgv = NULL;
965 PL_errgv = NULL;
966 PL_argvgv = NULL;
967 PL_argvoutgv = NULL;
968 PL_stdingv = NULL;
969 PL_stderrgv = NULL;
970 PL_last_in_gv = NULL;
971 PL_replgv = NULL;
972 PL_DBgv = NULL;
973 PL_DBline = NULL;
974 PL_DBsub = NULL;
975 PL_DBsingle = NULL;
976 PL_DBtrace = NULL;
977 PL_DBsignal = NULL;
978 PL_DBassertion = NULL;
601f1833 979 PL_DBcv = NULL;
7d49f689 980 PL_dbargs = NULL;
5c284bb0 981 PL_debstash = NULL;
8ebc5c01 982
7a1c5554 983 SvREFCNT_dec(PL_argvout_stack);
7d49f689 984 PL_argvout_stack = NULL;
8ebc5c01 985
5c831c24 986 SvREFCNT_dec(PL_modglobal);
5c284bb0 987 PL_modglobal = NULL;
5c831c24 988 SvREFCNT_dec(PL_preambleav);
7d49f689 989 PL_preambleav = NULL;
5c831c24 990 SvREFCNT_dec(PL_subname);
a0714e2c 991 PL_subname = NULL;
ca0c25f6 992#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 993 SvREFCNT_dec(PL_pidstatus);
5c284bb0 994 PL_pidstatus = NULL;
ca0c25f6 995#endif
5c831c24 996 SvREFCNT_dec(PL_toptarget);
a0714e2c 997 PL_toptarget = NULL;
5c831c24 998 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
999 PL_bodytarget = NULL;
1000 PL_formtarget = NULL;
5c831c24 1001
d33b2eba 1002 /* free locale stuff */
b9582b6a 1003#ifdef USE_LOCALE_COLLATE
d33b2eba 1004 Safefree(PL_collation_name);
bd61b366 1005 PL_collation_name = NULL;
b9582b6a 1006#endif
d33b2eba 1007
b9582b6a 1008#ifdef USE_LOCALE_NUMERIC
d33b2eba 1009 Safefree(PL_numeric_name);
bd61b366 1010 PL_numeric_name = NULL;
a453c169 1011 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1012 PL_numeric_radix_sv = NULL;
b9582b6a 1013#endif
d33b2eba 1014
5c831c24
GS
1015 /* clear utf8 character classes */
1016 SvREFCNT_dec(PL_utf8_alnum);
1017 SvREFCNT_dec(PL_utf8_alnumc);
1018 SvREFCNT_dec(PL_utf8_ascii);
1019 SvREFCNT_dec(PL_utf8_alpha);
1020 SvREFCNT_dec(PL_utf8_space);
1021 SvREFCNT_dec(PL_utf8_cntrl);
1022 SvREFCNT_dec(PL_utf8_graph);
1023 SvREFCNT_dec(PL_utf8_digit);
1024 SvREFCNT_dec(PL_utf8_upper);
1025 SvREFCNT_dec(PL_utf8_lower);
1026 SvREFCNT_dec(PL_utf8_print);
1027 SvREFCNT_dec(PL_utf8_punct);
1028 SvREFCNT_dec(PL_utf8_xdigit);
1029 SvREFCNT_dec(PL_utf8_mark);
1030 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1031 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1032 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1033 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1034 SvREFCNT_dec(PL_utf8_idstart);
1035 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1036 PL_utf8_alnum = NULL;
1037 PL_utf8_alnumc = NULL;
1038 PL_utf8_ascii = NULL;
1039 PL_utf8_alpha = NULL;
1040 PL_utf8_space = NULL;
1041 PL_utf8_cntrl = NULL;
1042 PL_utf8_graph = NULL;
1043 PL_utf8_digit = NULL;
1044 PL_utf8_upper = NULL;
1045 PL_utf8_lower = NULL;
1046 PL_utf8_print = NULL;
1047 PL_utf8_punct = NULL;
1048 PL_utf8_xdigit = NULL;
1049 PL_utf8_mark = NULL;
1050 PL_utf8_toupper = NULL;
1051 PL_utf8_totitle = NULL;
1052 PL_utf8_tolower = NULL;
1053 PL_utf8_tofold = NULL;
1054 PL_utf8_idstart = NULL;
1055 PL_utf8_idcont = NULL;
5c831c24 1056
971a9dd3 1057 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1058 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1059 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1060 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1061 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1062 CopFILE_free(&PL_compiling);
1063 CopSTASH_free(&PL_compiling);
5c831c24 1064
a0d0e21e 1065 /* Prepare to destruct main symbol table. */
5f05dabc 1066
3280af22
NIS
1067 hv = PL_defstash;
1068 PL_defstash = 0;
a0d0e21e 1069 SvREFCNT_dec(hv);
5c831c24 1070 SvREFCNT_dec(PL_curstname);
a0714e2c 1071 PL_curstname = NULL;
a0d0e21e 1072
5a844595
GS
1073 /* clear queued errors */
1074 SvREFCNT_dec(PL_errors);
a0714e2c 1075 PL_errors = NULL;
5a844595 1076
dd69841b
BB
1077 SvREFCNT_dec(PL_isarev);
1078
a0d0e21e 1079 FREETMPS;
0453d815 1080 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1081 if (PL_scopestack_ix != 0)
9014280d 1082 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1083 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1084 (long)PL_scopestack_ix);
1085 if (PL_savestack_ix != 0)
9014280d 1086 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1087 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1088 (long)PL_savestack_ix);
1089 if (PL_tmps_floor != -1)
9014280d 1090 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1091 (long)PL_tmps_floor + 1);
a0d0e21e 1092 if (cxstack_ix != -1)
9014280d 1093 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1094 (long)cxstack_ix + 1);
a0d0e21e 1095 }
8990e307
LW
1096
1097 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1098 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1099 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1100
1101 /* the 2 is for PL_fdpid and PL_strtab */
1102 while (PL_sv_count > 2 && sv_clean_all())
1103 ;
1104
d33b2eba
GS
1105 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1106 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1107 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1108 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1109
d4777f27
GS
1110 AvREAL_off(PL_fdpid); /* no surviving entries */
1111 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1112 PL_fdpid = NULL;
d33b2eba 1113
6c644e78
GS
1114#ifdef HAVE_INTERP_INTERN
1115 sys_intern_clear();
1116#endif
1117
6e72f9df
PP
1118 /* Destruct the global string table. */
1119 {
1120 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1121 * so that sv_free() won't fail on them.
80459961
NC
1122 * Now that the global string table is using a single hunk of memory
1123 * for both HE and HEK, we either need to explicitly unshare it the
1124 * correct way, or actually free things here.
6e72f9df 1125 */
80459961
NC
1126 I32 riter = 0;
1127 const I32 max = HvMAX(PL_strtab);
c4420975 1128 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1129 HE *hent = array[0];
1130
6e72f9df 1131 for (;;) {
0453d815 1132 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1133 HE * const next = HeNEXT(hent);
9014280d 1134 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1135 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1136 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1137 Safefree(hent);
1138 hent = next;
6e72f9df
PP
1139 }
1140 if (!hent) {
1141 if (++riter > max)
1142 break;
1143 hent = array[riter];
1144 }
1145 }
80459961
NC
1146
1147 Safefree(array);
1148 HvARRAY(PL_strtab) = 0;
1149 HvTOTALKEYS(PL_strtab) = 0;
1150 HvFILL(PL_strtab) = 0;
6e72f9df 1151 }
3280af22 1152 SvREFCNT_dec(PL_strtab);
6e72f9df 1153
e652bb2f 1154#ifdef USE_ITHREADS
c21d1a0f 1155 /* free the pointer tables used for cloning */
a0739874 1156 ptr_table_free(PL_ptr_table);
bf9cdc68 1157 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1158#endif
a0739874 1159
d33b2eba
GS
1160 /* free special SVs */
1161
1162 SvREFCNT(&PL_sv_yes) = 0;
1163 sv_clear(&PL_sv_yes);
1164 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1165 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1166
1167 SvREFCNT(&PL_sv_no) = 0;
1168 sv_clear(&PL_sv_no);
1169 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1170 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1171
9f375a43
DM
1172 {
1173 int i;
1174 for (i=0; i<=2; i++) {
1175 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1176 sv_clear(PERL_DEBUG_PAD(i));
1177 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1178 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1179 }
1180 }
1181
0453d815 1182 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1183 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1184
eba0f806
DM
1185#ifdef DEBUG_LEAKING_SCALARS
1186 if (PL_sv_count != 0) {
1187 SV* sva;
1188 SV* sv;
1189 register SV* svend;
1190
1191 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1192 svend = &sva[SvREFCNT(sva)];
1193 for (sv = sva + 1; sv < svend; ++sv) {
1194 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1195 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1196 " flags=0x%"UVxf
fd0854ff
DM
1197 " refcnt=%"UVuf pTHX__FORMAT "\n"
1198 "\tallocated at %s:%d %s %s%s\n",
6c9570dc 1199 (void*)sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
fd0854ff
DM
1200 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1201 sv->sv_debug_line,
1202 sv->sv_debug_inpad ? "for" : "by",
1203 sv->sv_debug_optype ?
1204 PL_op_name[sv->sv_debug_optype]: "(none)",
1205 sv->sv_debug_cloned ? " (cloned)" : ""
1206 );
2aa47728 1207#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1208 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1209#endif
eba0f806
DM
1210 }
1211 }
1212 }
1213 }
2aa47728
NC
1214#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1215 {
1216 int status;
1217 fd_set rset;
1218 /* Wait for up to 4 seconds for child to terminate.
1219 This seems to be the least effort way of timing out on reaping
1220 its exit status. */
1221 struct timeval waitfor = {4, 0};
41e4abd8 1222 int sock = PL_dumper_fd;
2aa47728
NC
1223
1224 shutdown(sock, 1);
1225 FD_ZERO(&rset);
1226 FD_SET(sock, &rset);
1227 select(sock + 1, &rset, NULL, NULL, &waitfor);
1228 waitpid(child, &status, WNOHANG);
1229 close(sock);
1230 }
1231#endif
eba0f806 1232#endif
bf9cdc68 1233 PL_sv_count = 0;
eba0f806 1234
f1fac472
NC
1235#ifdef PERL_DEBUG_READONLY_OPS
1236 free(PL_slabs);
1237 PL_slabs = NULL;
1238 PL_slab_count = 0;
1239#endif
eba0f806 1240
56a2bab7 1241#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1242 /* No more IO - including error messages ! */
1243 PerlIO_cleanup(aTHX);
1244#endif
1245
9f4bd222 1246 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1247 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1248 for no arg - and will try and SvREFCNT_dec it.
1249 */
1250 SvREFCNT(&PL_sv_undef) = 0;
1251 SvREADONLY_off(&PL_sv_undef);
1252
3280af22 1253 Safefree(PL_origfilename);
bd61b366 1254 PL_origfilename = NULL;
3280af22 1255 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1256 PL_reg_start_tmp = (char**)NULL;
1257 PL_reg_start_tmpl = 0;
43c5f42d 1258 Safefree(PL_reg_curpm);
82ba1be6 1259 Safefree(PL_reg_poscache);
dd28f7bb 1260 free_tied_hv_pool();
3280af22 1261 Safefree(PL_op_mask);
cf36064f 1262 Safefree(PL_psig_ptr);
bf9cdc68 1263 PL_psig_ptr = (SV**)NULL;
cf36064f 1264 Safefree(PL_psig_name);
bf9cdc68 1265 PL_psig_name = (SV**)NULL;
2c2666fc 1266 Safefree(PL_bitcount);
bd61b366 1267 PL_bitcount = NULL;
ce08f86c 1268 Safefree(PL_psig_pend);
bf9cdc68 1269 PL_psig_pend = (int*)NULL;
a0714e2c 1270 PL_formfeed = NULL;
6e72f9df 1271 nuke_stacks();
bf9cdc68
RG
1272 PL_tainting = FALSE;
1273 PL_taint_warn = FALSE;
3280af22 1274 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1275 PL_debug = 0;
ac27b0f5 1276
a0d0e21e 1277 DEBUG_P(debprofdump());
d33b2eba 1278
e5dd39fc 1279#ifdef USE_REENTRANT_API
10bc17b6 1280 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1281#endif
1282
612f20c3
GS
1283 sv_free_arenas();
1284
5d9a96ca
DM
1285 while (PL_regmatch_slab) {
1286 regmatch_slab *s = PL_regmatch_slab;
1287 PL_regmatch_slab = PL_regmatch_slab->next;
1288 Safefree(s);
1289 }
1290
fc36a67e
PP
1291 /* As the absolutely last thing, free the non-arena SV for mess() */
1292
3280af22 1293 if (PL_mess_sv) {
f350b448
NC
1294 /* we know that type == SVt_PVMG */
1295
9c63abab 1296 /* it could have accumulated taint magic */
f350b448
NC
1297 MAGIC* mg;
1298 MAGIC* moremagic;
1299 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1300 moremagic = mg->mg_moremagic;
1301 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1302 && mg->mg_len >= 0)
1303 Safefree(mg->mg_ptr);
1304 Safefree(mg);
9c63abab 1305 }
f350b448 1306
fc36a67e 1307 /* we know that type >= SVt_PV */
8bd4d4c5 1308 SvPV_free(PL_mess_sv);
3280af22
NIS
1309 Safefree(SvANY(PL_mess_sv));
1310 Safefree(PL_mess_sv);
a0714e2c 1311 PL_mess_sv = NULL;
fc36a67e 1312 }
37038d91 1313 return STATUS_EXIT;
79072805
LW
1314}
1315
954c1994
GS
1316/*
1317=for apidoc perl_free
1318
1319Releases a Perl interpreter. See L<perlembed>.
1320
1321=cut
1322*/
1323
79072805 1324void
0cb96387 1325perl_free(pTHXx)
79072805 1326{
5174512c
NC
1327 dVAR;
1328
c301d606
DM
1329 if (PL_veto_cleanup)
1330 return;
1331
7cb608b5 1332#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1333 {
1334 /*
1335 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1336 * value as we're probably hunting memory leaks then
1337 */
1338 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1339 if (!s || atoi(s) == 0) {
1340 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1341 thread at thread exit. */
1342 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1343 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1344 }
1345 }
7cb608b5
NC
1346#endif
1347
acfe0abc 1348#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1349# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1350 {
acfe0abc 1351# ifdef NETWARE
7af12a34 1352 void *host = nw_internal_host;
acfe0abc 1353# else
7af12a34 1354 void *host = w32_internal_host;
acfe0abc 1355# endif
7af12a34 1356 PerlMem_free(aTHXx);
acfe0abc 1357# ifdef NETWARE
7af12a34 1358 nw_delete_internal_host(host);
acfe0abc 1359# else
7af12a34 1360 win32_delete_internal_host(host);
acfe0abc 1361# endif
7af12a34 1362 }
1c0ca838
GS
1363# else
1364 PerlMem_free(aTHXx);
1365# endif
acfe0abc
GS
1366#else
1367 PerlMem_free(aTHXx);
76e3520e 1368#endif
79072805
LW
1369}
1370
b7f7fff6 1371#if defined(USE_ITHREADS)
aebd1ac7
GA
1372/* provide destructors to clean up the thread key when libperl is unloaded */
1373#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1374
826955bd 1375#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1376#pragma fini "perl_fini"
666ad1ec
GA
1377#elif defined(__sun) && !defined(__GNUC__)
1378#pragma fini (perl_fini)
aebd1ac7
GA
1379#endif
1380
0dbb1585
AL
1381static void
1382#if defined(__GNUC__)
1383__attribute__((destructor))
aebd1ac7 1384#endif
de009b76 1385perl_fini(void)
aebd1ac7 1386{
27da23d5 1387 dVAR;
c301d606 1388 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1389 FREE_THREAD_KEY;
1390}
1391
1392#endif /* WIN32 */
1393#endif /* THREADS */
1394
4b556e6c 1395void
864dbfa3 1396Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1397{
97aff369 1398 dVAR;
3280af22
NIS
1399 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1400 PL_exitlist[PL_exitlistlen].fn = fn;
1401 PL_exitlist[PL_exitlistlen].ptr = ptr;
1402 ++PL_exitlistlen;
4b556e6c
JD
1403}
1404
56cf6df8
RGS
1405#ifdef HAS_PROCSELFEXE
1406/* This is a function so that we don't hold on to MAXPATHLEN
1407 bytes of stack longer than necessary
1408 */
1409STATIC void
e1ec3a88 1410S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1411{
1412 char buf[MAXPATHLEN];
1413 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1414
1415 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1416 includes a spurious NUL which will cause $^X to fail in system
1417 or backticks (this will prevent extensions from being built and
1418 many tests from working). readlink is not meant to add a NUL.
1419 Normal readlink works fine.
1420 */
1421 if (len > 0 && buf[len-1] == '\0') {
1422 len--;
1423 }
1424
1425 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1426 returning the text "unknown" from the readlink rather than the path
1427 to the executable (or returning an error from the readlink). Any valid
1428 path has a '/' in it somewhere, so use that to validate the result.
1429 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1430 */
1431 if (len > 0 && memchr(buf, '/', len)) {
1432 sv_setpvn(sv,buf,len);
1433 }
1434 else {
1435 sv_setpv(sv,arg0);
1436 }
1437}
1438#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1439
1440STATIC void
1441S_set_caret_X(pTHX) {
97aff369 1442 dVAR;
fafc274c 1443 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1444 if (tmpgv) {
1445#ifdef HAS_PROCSELFEXE
1446 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1447#else
1448#ifdef OS2
c69033f2 1449 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1450#else
c69033f2 1451 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1452#endif
1453#endif
1454 }
1455}
1456
954c1994
GS
1457/*
1458=for apidoc perl_parse
1459
1460Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1461
1462=cut
1463*/
1464
79072805 1465int
0cb96387 1466perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1467{
27da23d5 1468 dVAR;
6224f72b 1469 I32 oldscope;
6224f72b 1470 int ret;
db36c5a1 1471 dJMPENV;
8d063cd8 1472
ed6c66dd 1473 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 1474
a687059c
LW
1475#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1476#ifdef IAMSUID
1477#undef IAMSUID
cea2e8a9 1478 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1479setuid perl scripts securely.\n");
ae3f3efd 1480#endif /* IAMSUID */
a687059c
LW
1481#endif
1482
b0891165
JH
1483#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1484 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1485 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1486 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1487 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1488 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1489 if (!PL_rehash_seed_set)
1490 PL_rehash_seed = get_hash_seed();
b0891165 1491 {
9d4ba2ae 1492 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1493
1b6737cc
AL
1494 if (s && (atoi(s) == 1))
1495 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1496 }
1497#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1498
3280af22 1499 PL_origargc = argc;
e2975953 1500 PL_origargv = argv;
a0d0e21e 1501
a2722ac9
GA
1502 if (PL_origalen != 0) {
1503 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1504 }
1505 else {
3cb9023d
JH
1506 /* Set PL_origalen be the sum of the contiguous argv[]
1507 * elements plus the size of the env in case that it is
e9137a8e 1508 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1509 * as the maximum modifiable length of $0. In the worst case
1510 * the area we are able to modify is limited to the size of
43c32782 1511 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1512 * --jhi */
e1ec3a88 1513 const char *s = NULL;
54bfe034 1514 int i;
1b6737cc 1515 const UV mask =
7d8e7db3 1516 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1517 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1518 const UV aligned =
43c32782
JH
1519 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1520
1521 /* See if all the arguments are contiguous in memory. Note
1522 * that 'contiguous' is a loose term because some platforms
1523 * align the argv[] and the envp[]. If the arguments look
1524 * like non-aligned, assume that they are 'strictly' or
1525 * 'traditionally' contiguous. If the arguments look like
1526 * aligned, we just check that they are within aligned
1527 * PTRSIZE bytes. As long as no system has something bizarre
1528 * like the argv[] interleaved with some other data, we are
1529 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1530 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1531 while (*s) s++;
1532 for (i = 1; i < PL_origargc; i++) {
1533 if ((PL_origargv[i] == s + 1
43c32782 1534#ifdef OS2
c8941eeb 1535 || PL_origargv[i] == s + 2
43c32782 1536#endif
c8941eeb
JH
1537 )
1538 ||
1539 (aligned &&
1540 (PL_origargv[i] > s &&
1541 PL_origargv[i] <=
1542 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1543 )
1544 {
1545 s = PL_origargv[i];
1546 while (*s) s++;
1547 }
1548 else
1549 break;
54bfe034 1550 }
54bfe034 1551 }
a4a109c2
JD
1552
1553#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1554 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1555 if (s && PL_origenviron && !PL_use_safe_putenv) {
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 }
a4a109c2
JD
1587#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1588
2d2af554 1589 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1590 }
1591
3280af22 1592 if (PL_do_undump) {
a0d0e21e
LW
1593
1594 /* Come here if running an undumped a.out. */
1595
3280af22
NIS
1596 PL_origfilename = savepv(argv[0]);
1597 PL_do_undump = FALSE;
a0d0e21e 1598 cxstack_ix = -1; /* start label stack again */
748a9306 1599 init_ids();
b7975bdd
NC
1600 assert (!PL_tainted);
1601 TAINT;
1602 S_set_caret_X(aTHX);
1603 TAINT_NOT;
a0d0e21e
LW
1604 init_postdump_symbols(argc,argv,env);
1605 return 0;
1606 }
1607
3280af22 1608 if (PL_main_root) {
3280af22 1609 op_free(PL_main_root);
5f66b61c 1610 PL_main_root = NULL;
ff0cee69 1611 }
5f66b61c 1612 PL_main_start = NULL;
3280af22 1613 SvREFCNT_dec(PL_main_cv);
601f1833 1614 PL_main_cv = NULL;
79072805 1615
3280af22
NIS
1616 time(&PL_basetime);
1617 oldscope = PL_scopestack_ix;
599cee73 1618 PL_dowarn = G_WARN_OFF;
f86702cc 1619
14dd3ad8 1620 JMPENV_PUSH(ret);
6224f72b 1621 switch (ret) {
312caa8e 1622 case 0:
14dd3ad8 1623 parse_body(env,xsinit);
3c10abe3
AG
1624 if (PL_unitcheckav)
1625 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1626 if (PL_checkav)
1627 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1628 ret = 0;
1629 break;
6224f72b
GS
1630 case 1:
1631 STATUS_ALL_FAILURE;
1632 /* FALL THROUGH */
1633 case 2:
1634 /* my_exit() was called */
3280af22 1635 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1636 LEAVE;
1637 FREETMPS;
3280af22 1638 PL_curstash = PL_defstash;
3c10abe3
AG
1639 if (PL_unitcheckav)
1640 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1641 if (PL_checkav)
1642 call_list(oldscope, PL_checkav);
37038d91 1643 ret = STATUS_EXIT;
14dd3ad8 1644 break;
6224f72b 1645 case 3:
bf49b057 1646 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1647 ret = 1;
1648 break;
6224f72b 1649 }
14dd3ad8
GS
1650 JMPENV_POP;
1651 return ret;
1652}
1653
312caa8e 1654STATIC void *
14dd3ad8 1655S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1656{
27da23d5 1657 dVAR;
2f9285f8 1658 PerlIO *rsfp;
312caa8e 1659 int argc = PL_origargc;
8f42b153 1660 char **argv = PL_origargv;
e1ec3a88 1661 const char *scriptname = NULL;
312caa8e 1662 VOL bool dosearch = FALSE;
e1ec3a88 1663 const char *validarg = "";
312caa8e 1664 register SV *sv;
47f56822 1665 register char *s, c;
bd61b366 1666 const char *cddir = NULL;
ab019eaa 1667#ifdef USE_SITECUSTOMIZE
20ef40cf 1668 bool minus_f = FALSE;
ab019eaa 1669#endif
009d90df
DM
1670 SV *linestr_sv = newSV_type(SVt_PVIV);
1671
1672 SvGROW(linestr_sv, 80);
1673 sv_setpvn(linestr_sv,"",0);
312caa8e 1674
396482e1 1675 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1676 SAVEFREESV(sv);
1677 init_main_stash();
54310121 1678
6224f72b
GS
1679 for (argc--,argv++; argc > 0; argc--,argv++) {
1680 if (argv[0][0] != '-' || !argv[0][1])
1681 break;
1682#ifdef DOSUID
1683 if (*validarg)
1684 validarg = " PHOOEY ";
1685 else
1686 validarg = argv[0];
ae3f3efd
PS
1687 /*
1688 * Can we rely on the kernel to start scripts with argv[1] set to
1689 * contain all #! line switches (the whole line)? (argv[0] is set to
1690 * the interpreter name, argv[2] to the script name; argv[3] and
1691 * above may contain other arguments.)
1692 */
13281fa4 1693#endif
6224f72b
GS
1694 s = argv[0]+1;
1695 reswitch:
47f56822 1696 switch ((c = *s)) {
729a02f2 1697 case 'C':
1d5472a9
GS
1698#ifndef PERL_STRICT_CR
1699 case '\r':
1700#endif
6224f72b
GS
1701 case ' ':
1702 case '0':
1703 case 'F':
1704 case 'a':
1705 case 'c':
1706 case 'd':
1707 case 'D':
1708 case 'h':
1709 case 'i':
1710 case 'l':
1711 case 'M':
1712 case 'm':
1713 case 'n':
1714 case 'p':
1715 case 's':
1716 case 'u':
1717 case 'U':
1718 case 'v':
599cee73
PM
1719 case 'W':
1720 case 'X':
6224f72b 1721 case 'w':
06492da6 1722 case 'A':
97bd5664 1723 if ((s = moreswitches(s)))
6224f72b
GS
1724 goto reswitch;
1725 break;
33b78306 1726
1dbad523 1727 case 't':
22f7c9c9 1728 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1729 if( !PL_tainting ) {
1730 PL_taint_warn = TRUE;
1731 PL_tainting = TRUE;
1732 }
1733 s++;
1734 goto reswitch;
6224f72b 1735 case 'T':
22f7c9c9 1736 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1737 PL_tainting = TRUE;
317ea90d 1738 PL_taint_warn = FALSE;
6224f72b
GS
1739 s++;
1740 goto reswitch;
f86702cc 1741
bc9b29db
RH
1742 case 'E':
1743 PL_minus_E = TRUE;
1744 /* FALL THROUGH */
6224f72b 1745 case 'e':
bf4acbe4
GS
1746#ifdef MACOS_TRADITIONAL
1747 /* ignore -e for Dev:Pseudo argument */
1748 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1749 break;
bf4acbe4 1750#endif
a52eba0e 1751 forbid_setid('e', -1);
3280af22 1752 if (!PL_e_script) {
396482e1 1753 PL_e_script = newSVpvs("");
0cb96387 1754 filter_add(read_e_script, NULL);
6224f72b
GS
1755 }
1756 if (*++s)
3280af22 1757 sv_catpv(PL_e_script, s);
6224f72b 1758 else if (argv[1]) {
3280af22 1759 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1760 argc--,argv++;
1761 }
1762 else
47f56822 1763 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1764 sv_catpvs(PL_e_script, "\n");
6224f72b 1765 break;
afe37c7d 1766
20ef40cf 1767 case 'f':
f5542d3a 1768#ifdef USE_SITECUSTOMIZE
20ef40cf 1769 minus_f = TRUE;
f5542d3a 1770#endif
20ef40cf
GA
1771 s++;
1772 goto reswitch;
1773
6224f72b 1774 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1775 forbid_setid('I', -1);
bd61b366 1776 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1777 argc--,argv++;
1778 }
6224f72b 1779 if (s && *s) {
0df16ed7 1780 STRLEN len = strlen(s);
aec46f14 1781 const char * const p = savepvn(s, len);
88fe16b2 1782 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1783 sv_catpvs(sv, "-I");
0df16ed7 1784 sv_catpvn(sv, p, len);
396482e1 1785 sv_catpvs(sv, " ");
6224f72b 1786 Safefree(p);
0df16ed7
GS
1787 }
1788 else
a67e862a 1789 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1790 break;
1791 case 'P':
a52eba0e 1792 forbid_setid('P', -1);
3280af22 1793 PL_preprocess = TRUE;
6224f72b
GS
1794 s++;
1795 goto reswitch;
1796 case 'S':
a52eba0e 1797 forbid_setid('S', -1);
6224f72b
GS
1798 dosearch = TRUE;
1799 s++;
1800 goto reswitch;
1801 case 'V':
7edfd0ef
NC
1802 {
1803 SV *opts_prog;
1804
29a861e7 1805 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
7edfd0ef
NC
1806 if (*++s != ':') {
1807 STRLEN opts;
1808
396482e1 1809 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1810#ifdef VMS
396482e1 1811 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1812#else
396482e1 1813 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1814#endif
7edfd0ef 1815 opts = SvCUR(opts_prog);
efcaa95b 1816
9cd7d3f2 1817 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1818# ifdef DEBUGGING
e2e4dbf1 1819 " DEBUGGING"
6224f72b 1820# endif
4f185743
NC
1821# ifdef DEBUG_LEAKING_SCALARS
1822 " DEBUG_LEAKING_SCALARS"
1823# endif
85e1fcb9 1824# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1825 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1826# endif
1827# ifdef FAKE_THREADS
e2e4dbf1 1828 " FAKE_THREADS"
85e1fcb9 1829# endif
6224f72b 1830# ifdef MULTIPLICITY
e2e4dbf1 1831 " MULTIPLICITY"
6224f72b 1832# endif
85e1fcb9 1833# ifdef MYMALLOC
e2e4dbf1 1834 " MYMALLOC"
85e1fcb9 1835# endif
3bcf5ed8
SP
1836# ifdef NO_MATHOMS
1837 " NO_MATHOMS"
1838# endif
5e661f6a
NC
1839# ifdef PERL_DEBUG_READONLY_OPS
1840 " PERL_DEBUG_READONLY_OPS"
1841# endif
85e1fcb9 1842# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1843 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1844# endif
1845# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1846 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1847# endif
1848# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1849 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1850# endif
1851# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1852 " PERL_IMPLICIT_SYS"
85e1fcb9 1853# endif
a724edfe
NC
1854# ifdef PERL_MAD
1855 " PERL_MAD"
1856# endif
85e1fcb9 1857# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1858 " PERL_MALLOC_WRAP"
85e1fcb9 1859# endif
4724db38
NC
1860# ifdef PERL_MEM_LOG
1861 " PERL_MEM_LOG"
1862# endif
1863# ifdef PERL_MEM_LOG_ENV
1864 " PERL_MEM_LOG_ENV"
1865# endif
1866# ifdef PERL_MEM_LOG_ENV_FD
1867 " PERL_MEM_LOG_ENV_FD"
1868# endif
1869# ifdef PERL_MEM_LOG_STDERR
1870 " PERL_MEM_LOG_STDERR"
1871# endif
1872# ifdef PERL_MEM_LOG_TIMESTAMP
1873 " PERL_MEM_LOG_TIMESTAMP"
1874# endif
85e1fcb9 1875# ifdef PERL_NEED_APPCTX
e2e4dbf1 1876 " PERL_NEED_APPCTX"
85e1fcb9
SH
1877# endif
1878# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1879 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1880# endif
1881# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1882 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1883# endif
4724db38
NC
1884# ifdef PERL_POISON
1885 " PERL_POISON"
1886# endif
9c0a4d5d
DM
1887# ifdef PERL_TRACK_MEMPOOL
1888 " PERL_TRACK_MEMPOOL"
1889# endif
417cd4a8
SP
1890# ifdef PERL_USE_SAFE_PUTENV
1891 " PERL_USE_SAFE_PUTENV"
1892# endif
4724db38 1893# ifdef PERL_USES_PL_PIDSTATUS
ca0c25f6 1894 " PERL_USES_PL_PIDSTATUS"
4724db38 1895# endif
85e1fcb9 1896# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1897 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1898# endif
1899# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1900 " THREADS_HAVE_PIDS"
85e1fcb9 1901# endif
85e1fcb9 1902# ifdef USE_64_BIT_ALL
e2e4dbf1 1903 " USE_64_BIT_ALL"
ac5e8965 1904# endif
10cc9d2a 1905# ifdef USE_64_BIT_INT
e2e4dbf1 1906 " USE_64_BIT_INT"
10cc9d2a 1907# endif
85e1fcb9 1908# ifdef USE_ITHREADS
e2e4dbf1 1909 " USE_ITHREADS"
85e1fcb9
SH
1910# endif
1911# ifdef USE_LARGE_FILES
e2e4dbf1 1912 " USE_LARGE_FILES"
ac5e8965
JH
1913# endif
1914# ifdef USE_LONG_DOUBLE
e2e4dbf1 1915 " USE_LONG_DOUBLE"
ac5e8965 1916# endif
85e1fcb9 1917# ifdef USE_PERLIO
e2e4dbf1 1918 " USE_PERLIO"
53430762 1919# endif
85e1fcb9 1920# ifdef USE_REENTRANT_API
e2e4dbf1 1921 " USE_REENTRANT_API"
85e1fcb9
SH
1922# endif
1923# ifdef USE_SFIO
e2e4dbf1 1924 " USE_SFIO"
ac5e8965 1925# endif
20ef40cf 1926# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1927 " USE_SITECUSTOMIZE"
20ef40cf 1928# endif
85e1fcb9 1929# ifdef USE_SOCKS
e2e4dbf1 1930 " USE_SOCKS"
b363f7ed 1931# endif
e2e4dbf1 1932 );
efcaa95b 1933
7edfd0ef
NC
1934 while (SvCUR(opts_prog) > opts+76) {
1935 /* find last space after "options: " and before col 76
1936 */
efcaa95b 1937
7edfd0ef 1938 const char *space;
c4420975 1939 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1940 const char c = pv[opts+76];
1941 pv[opts+76] = '\0';
1942 space = strrchr(pv+opts+26, ' ');
1943 pv[opts+76] = c;
1944 if (!space) break; /* "Can't happen" */
efcaa95b 1945
7edfd0ef 1946 /* break the line before that space */
efcaa95b 1947
7edfd0ef 1948 opts = space - pv;
89529cee 1949 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1950 STR_WITH_LEN("\\n "));
7edfd0ef 1951 }
efcaa95b 1952
396482e1 1953 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1954
6224f72b 1955#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1956 if (LOCAL_PATCH_COUNT > 0) {
1957 int i;
396482e1 1958 sv_catpvs(opts_prog,
7edfd0ef
NC
1959 "\" Locally applied patches:\\n\",");
1960 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1961 if (PL_localpatches[i])
1962 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1963 0, PL_localpatches[i], 0);
1964 }
6224f72b 1965 }
6224f72b 1966#endif
7edfd0ef
NC
1967 Perl_sv_catpvf(aTHX_ opts_prog,
1968 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1969#ifdef __DATE__
1970# ifdef __TIME__
7edfd0ef
NC
1971 Perl_sv_catpvf(aTHX_ opts_prog,
1972 ",\" Compiled at %s %s\\n\"",__DATE__,
1973 __TIME__);
6224f72b 1974# else
7edfd0ef
NC
1975 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1976 __DATE__);
6224f72b
GS
1977# endif
1978#endif
396482e1 1979 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1980 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1981 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1982#ifdef __CYGWIN__
396482e1 1983 sv_catpvs(opts_prog,
7edfd0ef 1984 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1985#endif
396482e1 1986 sv_catpvs(opts_prog,
7edfd0ef
NC
1987 "print \" \\%ENV:\\n @env\\n\" if @env;"
1988 "print \" \\@INC:\\n @INC\\n\";");
1989 }
1990 else {
1991 ++s;
1992 opts_prog = Perl_newSVpvf(aTHX_
1993 "Config::config_vars(qw%c%s%c)",
1994 0, s, 0);
1995 s += strlen(s);
1996 }
1997 av_push(PL_preambleav, opts_prog);
1998 /* don't look for script or read stdin */
1999 scriptname = BIT_BUCKET;
2000 goto reswitch;
6224f72b 2001 }
6224f72b 2002 case 'x':
3280af22 2003 PL_doextract = TRUE;
6224f72b
GS
2004 s++;
2005 if (*s)
f4c556ac 2006 cddir = s;
6224f72b
GS
2007 break;
2008 case 0:
2009 break;
2010 case '-':
2011 if (!*++s || isSPACE(*s)) {
2012 argc--,argv++;
2013 goto switch_end;
2014 }
2015 /* catch use of gnu style long options */
2016 if (strEQ(s, "version")) {
dd374669 2017 s = (char *)"v";
6224f72b
GS
2018 goto reswitch;
2019 }
2020 if (strEQ(s, "help")) {
dd374669 2021 s = (char *)"h";
6224f72b
GS
2022 goto reswitch;
2023 }
2024 s--;
2025 /* FALL THROUGH */
2026 default:
cea2e8a9 2027 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2028 }
2029 }
6224f72b 2030 switch_end:
54310121 2031
f675dbe5
CB
2032 if (
2033#ifndef SECURE_INTERNAL_GETENV
2034 !PL_tainting &&
2035#endif
cf756827 2036 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2037 {
e1ec3a88 2038 const char *popt = s;
74288ac8
GS
2039 while (isSPACE(*s))
2040 s++;
317ea90d 2041 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 2042 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 2043 PL_tainting = TRUE;
317ea90d
MS
2044 PL_taint_warn = FALSE;
2045 }
74288ac8 2046 else {
bd61b366 2047 char *popt_copy = NULL;
74288ac8 2048 while (s && *s) {
4ea8f8fb 2049 char *d;
74288ac8
GS
2050 while (isSPACE(*s))
2051 s++;
2052 if (*s == '-') {
2053 s++;
2054 if (isSPACE(*s))
2055 continue;
2056 }
4ea8f8fb 2057 d = s;
74288ac8
GS
2058 if (!*s)
2059 break;
e4af53b0 2060 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 2061 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2062 while (++s && *s) {
2063 if (isSPACE(*s)) {
cf756827
GS
2064 if (!popt_copy) {
2065 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
2066 s = popt_copy + (s - popt);
2067 d = popt_copy + (d - popt);
2068 }
4ea8f8fb
MS
2069 *s++ = '\0';
2070 break;
2071 }
2072 }
1c4db469 2073 if (*d == 't') {
317ea90d
MS
2074 if( !PL_tainting ) {
2075 PL_taint_warn = TRUE;
2076 PL_tainting = TRUE;
2077 }
1c4db469 2078 } else {
97bd5664 2079 moreswitches(d);
1c4db469 2080 }
6224f72b 2081 }
6224f72b
GS
2082 }
2083 }
a0d0e21e 2084
20ef40cf
GA
2085#ifdef USE_SITECUSTOMIZE
2086 if (!minus_f) {
29a861e7
NC
2087 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2088 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
20ef40cf
GA
2089 }
2090#endif
2091
6224f72b
GS
2092 if (!scriptname)
2093 scriptname = argv[0];
3280af22 2094 if (PL_e_script) {
6224f72b
GS
2095 argc++,argv--;
2096 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2097 }
bd61b366 2098 else if (scriptname == NULL) {
6224f72b
GS
2099#ifdef MSDOS
2100 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2101 moreswitches("h");
6224f72b
GS
2102#endif
2103 scriptname = "-";
2104 }
2105
b7975bdd
NC
2106 /* Set $^X early so that it can be used for relocatable paths in @INC */
2107 assert (!PL_tainted);
2108 TAINT;
2109 S_set_caret_X(aTHX);
2110 TAINT_NOT;
6224f72b
GS
2111 init_perllib();
2112
a52eba0e
NC
2113 {
2114 int suidscript;
2115 const int fdscript
2f9285f8 2116 = open_script(scriptname, dosearch, sv, &suidscript, &rsfp);
6224f72b 2117
2f9285f8
DM
2118 validate_suid(validarg, scriptname, fdscript, suidscript,
2119 linestr_sv, rsfp);
6224f72b 2120
64ca3a65 2121#ifndef PERL_MICRO
a52eba0e
NC
2122# if defined(SIGCHLD) || defined(SIGCLD)
2123 {
2124# ifndef SIGCHLD
2125# define SIGCHLD SIGCLD
2126# endif
2127 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2128 if (sigstate == (Sighandler_t) SIG_IGN) {
2129 if (ckWARN(WARN_SIGNAL))
2130 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2131 "Can't ignore signal CHLD, forcing to default");
2132 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2133 }
0b5b802d 2134 }
a52eba0e 2135# endif
64ca3a65 2136#endif
0b5b802d 2137
a52eba0e 2138 if (PL_doextract
bf4acbe4 2139#ifdef MACOS_TRADITIONAL
a52eba0e 2140 || gMacPerl_AlwaysExtract
bf4acbe4 2141#endif
a52eba0e 2142 ) {
faef540c
NC
2143
2144 /* This will croak if suidscript is >= 0, as -x cannot be used with
2145 setuid scripts. */
2146 forbid_setid('x', suidscript);
2147 /* Hence you can't get here if suidscript >= 0 */
2148
2f9285f8 2149 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2150 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2151 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2152 }
f4c556ac 2153 }
6224f72b 2154
b9f83d2f 2155 PL_main_cv = PL_compcv = (CV*)newSV_type(SVt_PVCV);
3280af22
NIS
2156 CvUNIQUE_on(PL_compcv);
2157
dd2155a4 2158 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2159
dd69841b
BB
2160 PL_isarev = newHV();
2161
0c4f7ff0 2162 boot_core_PerlIO();
6224f72b 2163 boot_core_UNIVERSAL();
09bef843 2164 boot_core_xsutils();
e1a479c5 2165 boot_core_mro();
6224f72b
GS
2166
2167 if (xsinit)
acfe0abc 2168 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2169#ifndef PERL_MICRO
d0d72822 2170#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2171 init_os_extras();
6224f72b 2172#endif
64ca3a65 2173#endif
6224f72b 2174
29209bc5 2175#ifdef USE_SOCKS
1b9c9cf5
DH
2176# ifdef HAS_SOCKS5_INIT
2177 socks5_init(argv[0]);
2178# else
29209bc5 2179 SOCKSinit(argv[0]);
1b9c9cf5 2180# endif
ac27b0f5 2181#endif
29209bc5 2182
6224f72b
GS
2183 init_predump_symbols();
2184 /* init_postdump_symbols not currently designed to be called */
2185 /* more than once (ENV isn't cleared first, for example) */
2186 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2187 if (!PL_do_undump)
6224f72b
GS
2188 init_postdump_symbols(argc,argv,env);
2189
27da23d5
JH
2190 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2191 * or explicitly in some platforms.
085a54d9 2192 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2193 * look like the user wants to use UTF-8. */
a0fd4948 2194#if defined(__SYMBIAN32__)
27da23d5
JH
2195 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2196#endif
06e66572
JH
2197 if (PL_unicode) {
2198 /* Requires init_predump_symbols(). */
a05d7ebb 2199 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2200 IO* io;
2201 PerlIO* fp;
2202 SV* sv;
2203
a05d7ebb 2204 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2205 * and the default open disciplines. */
a05d7ebb
JH
2206 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2207 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2208 (fp = IoIFP(io)))
2209 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2210 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2211 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2212 (fp = IoOFP(io)))
2213 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2214 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2215 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2216 (fp = IoOFP(io)))
2217 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2218 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2219 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2220 SVt_PV)))) {
a05d7ebb
JH
2221 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2222 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2223 if (in) {
2224 if (out)
2225 sv_setpvn(sv, ":utf8\0:utf8", 11);
2226 else
2227 sv_setpvn(sv, ":utf8\0", 6);
2228 }
2229 else if (out)
2230 sv_setpvn(sv, "\0:utf8", 6);
2231 SvSETMAGIC(sv);
2232 }
b310b053
JH
2233 }
2234 }
2235
4ffa73a3
JH
2236 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2237 if (strEQ(s, "unsafe"))
2238 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2239 else if (strEQ(s, "safe"))
2240 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2241 else
2242 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2243 }
2244
81d86705
NC
2245#ifdef PERL_MAD
2246 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2247 PL_madskills = 1;
2248 PL_minus_c = 1;
2249 if (!s || !s[0])
2250 PL_xmlfp = PerlIO_stdout();
2251 else {
2252 PL_xmlfp = PerlIO_open(s, "w");
2253 if (!PL_xmlfp)
2254 Perl_croak(aTHX_ "Can't open %s", s);
2255 }
2256 my_setenv("PERL_XMLDUMP", Nullch); /* hide from subprocs */
2257 }
2258 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2259 PL_madskills = atoi(s);
2260 my_setenv("PERL_MADSKILLS", Nullch); /* hide from subprocs */
2261 }
2262#endif
2263
2f9285f8 2264 lex_start(linestr_sv, rsfp);
219f7226 2265 PL_subname = newSVpvs("main");
6224f72b
GS
2266
2267 /* now parse the script */
2268
93189314 2269 SETERRNO(0,SS_NORMAL);
3280af22 2270 PL_error_count = 0;
bf4acbe4
GS
2271#ifdef MACOS_TRADITIONAL
2272 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2273 if (PL_minus_c)
2274 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2275 else {
2276 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2277 MacPerl_MPWFileName(PL_origfilename));
2278 }
2279 }
2280#else
3280af22
NIS
2281 if (yyparse() || PL_error_count) {
2282 if (PL_minus_c)
cea2e8a9 2283 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2284 else {
cea2e8a9 2285 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2286 PL_origfilename);
6224f72b
GS
2287 }
2288 }
bf4acbe4 2289#endif
57843af0 2290 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2291 PL_curstash = PL_defstash;
2292 PL_preprocess = FALSE;
2293 if (PL_e_script) {
2294 SvREFCNT_dec(PL_e_script);
a0714e2c 2295 PL_e_script = NULL;
6224f72b
GS
2296 }
2297
3280af22 2298 if (PL_do_undump)
6224f72b
GS
2299 my_unexec();
2300
57843af0
GS
2301 if (isWARN_ONCE) {
2302 SAVECOPFILE(PL_curcop);
2303 SAVECOPLINE(PL_curcop);
3280af22 2304 gv_check(PL_defstash);
57843af0 2305 }
6224f72b
GS
2306
2307 LEAVE;
2308 FREETMPS;
2309
2310#ifdef MYMALLOC
2311 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2312 dump_mstats("after compilation:");
2313#endif
2314
2315 ENTER;
3280af22 2316 PL_restartop = 0;
312caa8e 2317 return NULL;
6224f72b
GS
2318}
2319
954c1994
GS
2320/*
2321=for apidoc perl_run
2322
2323Tells a Perl interpreter to run. See L<perlembed>.
2324
2325=cut
2326*/
2327
6224f72b 2328int
0cb96387 2329perl_run(pTHXx)
6224f72b 2330{
97aff369 2331 dVAR;
6224f72b 2332 I32 oldscope;
14dd3ad8 2333 int ret = 0;
db36c5a1 2334 dJMPENV;
6224f72b 2335
ed6c66dd 2336 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 2337
3280af22 2338 oldscope = PL_scopestack_ix;
96e176bf
CL
2339#ifdef VMS
2340 VMSISH_HUSHED = 0;
2341#endif
6224f72b 2342
14dd3ad8 2343 JMPENV_PUSH(ret);
6224f72b
GS
2344 switch (ret) {
2345 case 1:
2346 cxstack_ix = -1; /* start context stack again */
312caa8e 2347 goto redo_body;
14dd3ad8 2348 case 0: /* normal completion */
14dd3ad8
GS
2349 redo_body:
2350 run_body(oldscope);
14dd3ad8
GS
2351 /* FALL THROUGH */
2352 case 2: /* my_exit() */
3280af22 2353 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2354 LEAVE;
2355 FREETMPS;
3280af22 2356 PL_curstash = PL_defstash;
3a1ee7e8 2357 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2358 PL_endav && !PL_minus_c)
2359 call_list(oldscope, PL_endav);
6224f72b
GS
2360#ifdef MYMALLOC
2361 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2362 dump_mstats("after execution: ");
2363#endif
37038d91 2364 ret = STATUS_EXIT;
14dd3ad8 2365 break;
6224f72b 2366 case 3:
312caa8e
CS
2367 if (PL_restartop) {
2368 POPSTACK_TO(PL_mainstack);
2369 goto redo_body;
6224f72b 2370 }
bf49b057 2371 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2372 FREETMPS;
14dd3ad8
GS
2373 ret = 1;
2374 break;
6224f72b
GS
2375 }
2376
14dd3ad8
GS
2377 JMPENV_POP;
2378 return ret;
312caa8e
CS
2379}
2380
dd374669 2381STATIC void
14dd3ad8
GS
2382S_run_body(pTHX_ I32 oldscope)
2383{
97aff369 2384 dVAR;
6224f72b 2385 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2386 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2387
3280af22 2388 if (!PL_restartop) {
81d86705
NC
2389#ifdef PERL_MAD
2390 if (PL_xmlfp) {
2391 xmldump_all();
2392 exit(0); /* less likely to core dump than my_exit(0) */
2393 }
2394#endif
6224f72b 2395 DEBUG_x(dump_all());
cf2782cd 2396#ifdef DEBUGGING
ecae49c0
NC
2397 if (!DEBUG_q_TEST)
2398 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2399#endif
b900a521
JH
2400 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2401 PTR2UV(thr)));
6224f72b 2402
3280af22 2403 if (PL_minus_c) {
bf4acbe4 2404#ifdef MACOS_TRADITIONAL
e69a2255
JH
2405 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2406 (gMacPerl_ErrorFormat ? "# " : ""),
2407 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2408#else
bf49b057 2409 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2410#endif
6224f72b
GS
2411 my_exit(0);
2412 }
3280af22 2413 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2414 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2415 if (PL_initav)
2416 call_list(oldscope, PL_initav);
f1fac472
NC
2417#ifdef PERL_DEBUG_READONLY_OPS
2418 Perl_pending_Slabs_to_ro(aTHX);
2419#endif
6224f72b
GS
2420 }
2421
2422 /* do it */
2423
3280af22 2424 if (PL_restartop) {
533c011a 2425 PL_op = PL_restartop;
3280af22 2426 PL_restartop = 0;
cea2e8a9 2427 CALLRUNOPS(aTHX);
6224f72b 2428 }
3280af22
NIS
2429 else if (PL_main_start) {
2430 CvDEPTH(PL_main_cv) = 1;
533c011a 2431 PL_op = PL_main_start;
cea2e8a9 2432 CALLRUNOPS(aTHX);
6224f72b 2433 }
f6b3007c
JH
2434 my_exit(0);
2435 /* NOTREACHED */
6224f72b
GS
2436}
2437
954c1994 2438/*
ccfc67b7
JH
2439=head1 SV Manipulation Functions
2440
954c1994
GS
2441=for apidoc p||get_sv
2442
2443Returns the SV of the specified Perl scalar. If C<create> is set and the
2444Perl variable does not exist then it will be created. If C<create> is not
2445set and the variable does not exist then NULL is returned.
2446
2447=cut
2448*/
2449
6224f72b 2450SV*
864dbfa3 2451Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2452{
2453 GV *gv;
6224f72b
GS
2454 gv = gv_fetchpv(name, create, SVt_PV);
2455 if (gv)
2456 return GvSV(gv);
a0714e2c 2457 return NULL;
6224f72b
GS
2458}
2459
954c1994 2460/*
ccfc67b7
JH
2461=head1 Array Manipulation Functions
2462
954c1994
GS
2463=for apidoc p||get_av
2464
2465Returns the AV of the specified Perl array. If C<create> is set and the
2466Perl variable does not exist then it will be created. If C<create> is not
2467set and the variable does not exist then NULL is returned.
2468
2469=cut
2470*/
2471
6224f72b 2472AV*
864dbfa3 2473Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2474{
c4420975 2475 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2476 if (create)
2477 return GvAVn(gv);
2478 if (gv)
2479 return GvAV(gv);
7d49f689 2480 return NULL;
6224f72b
GS
2481}
2482
954c1994 2483/*
ccfc67b7
JH
2484=head1 Hash Manipulation Functions
2485
954c1994
GS
2486=for apidoc p||get_hv
2487
2488Returns the HV of the specified Perl hash. If C<create> is set and the
2489Perl variable does not exist then it will be created. If C<create> is not
2490set and the variable does not exist then NULL is returned.
2491
2492=cut
2493*/
2494
6224f72b 2495HV*
864dbfa3 2496Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2497{
890ce7af 2498 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2499 if (create)
2500 return GvHVn(gv);
2501 if (gv)
2502 return GvHV(gv);
5c284bb0 2503 return NULL;
a0d0e21e
LW
2504}
2505
954c1994 2506/*
ccfc67b7
JH
2507=head1 CV Manipulation Functions
2508
780a5241
NC
2509=for apidoc p||get_cvn_flags
2510
2511Returns the CV of the specified Perl subroutine. C<flags> are passed to
2512C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2513exist then it will be declared (which has the same effect as saying
2514C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2515then NULL is returned.
2516
954c1994
GS
2517=for apidoc p||get_cv
2518
780a5241 2519Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2520
2521=cut
2522*/
2523
a0d0e21e 2524CV*
780a5241 2525Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2526{
780a5241 2527 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2528 /* XXX this is probably not what they think they're getting.
2529 * It has the same effect as "sub name;", i.e. just a forward
2530 * declaration! */
780a5241
NC
2531 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2532 SV *const sv = newSVpvn(name,len);
2533 SvFLAGS(sv) |= flags & SVf_UTF8;
774d564b 2534 return newSUB(start_subparse(FALSE, 0),
780a5241 2535 newSVOP(OP_CONST, 0, sv),
5f66b61c 2536 NULL, NULL);
780a5241 2537 }
a0d0e21e 2538 if (gv)
8ebc5c01 2539 return GvCVu(gv);
601f1833 2540 return NULL;
a0d0e21e
LW
2541}
2542
780a5241
NC
2543CV*
2544Perl_get_cv(pTHX_ const char *name, I32 flags)
2545{
2546 return get_cvn_flags(name, strlen(name), flags);
2547}
2548
79072805
LW
2549/* Be sure to refetch the stack pointer after calling these routines. */
2550
954c1994 2551/*
ccfc67b7
JH
2552
2553=head1 Callback Functions
2554
954c1994
GS
2555=for apidoc p||call_argv
2556
2557Performs a callback to the specified Perl sub. See L<perlcall>.
2558
2559=cut
2560*/
2561
a0d0e21e 2562I32
8f42b153 2563Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2564
8ac85365
NIS
2565 /* See G_* flags in cop.h */
2566 /* null terminated arg list */
8990e307 2567{
97aff369 2568 dVAR;
a0d0e21e 2569 dSP;
8990e307 2570
924508f0 2571 PUSHMARK(SP);
a0d0e21e 2572 if (argv) {
8990e307 2573 while (*argv) {
a0d0e21e 2574 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2575 argv++;
2576 }
a0d0e21e 2577 PUTBACK;
8990e307 2578 }
864dbfa3 2579 return call_pv(sub_name, flags);
8990e307
LW
2580}
2581
954c1994
GS
2582/*
2583=for apidoc p||call_pv
2584
2585Performs a callback to the specified Perl sub. See L<perlcall>.
2586
2587=cut
2588*/
2589
a0d0e21e 2590I32
864dbfa3 2591Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2592 /* name of the subroutine */
2593 /* See G_* flags in cop.h */
a0d0e21e 2594{
864dbfa3 2595 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2596}
2597
954c1994
GS
2598/*
2599=for apidoc p||call_method
2600
2601Performs a callback to the specified Perl method. The blessed object must
2602be on the stack. See L<perlcall>.
2603
2604=cut
2605*/
2606
a0d0e21e 2607I32
864dbfa3 2608Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2609 /* name of the subroutine */
2610 /* See G_* flags in cop.h */
a0d0e21e 2611{
968b3946 2612 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2613}
2614
2615/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2616/*
2617=for apidoc p||call_sv
2618
2619Performs a callback to the Perl sub whose name is in the SV. See
2620L<perlcall>.
2621
2622=cut
2623*/
2624
a0d0e21e 2625I32
864dbfa3 2626Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2627 /* See G_* flags in cop.h */
a0d0e21e 2628{
27da23d5 2629 dVAR; dSP;
a0d0e21e 2630 LOGOP myop; /* fake syntax tree node */
968b3946 2631 UNOP method_op;
aa689395 2632 I32 oldmark;
8ea43dc8 2633 VOL I32 retval = 0;
a0d0e21e 2634 I32 oldscope;
54310121 2635 bool oldcatch = CATCH_GET;
6224f72b 2636 int ret;
c4420975 2637 OP* const oldop = PL_op;
db36c5a1 2638 dJMPENV;
1e422769 2639
a0d0e21e
LW
2640 if (flags & G_DISCARD) {
2641 ENTER;
2642 SAVETMPS;
2643 }
2644
aa689395 2645 Zero(&myop, 1, LOGOP);
5f66b61c 2646 myop.op_next = NULL;
f51d4af5 2647 if (!(flags & G_NOARGS))
aa689395 2648 myop.op_flags |= OPf_STACKED;
54310121
PP
2649 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2650 (flags & G_ARRAY) ? OPf_WANT_LIST :
2651 OPf_WANT_SCALAR);
462e5cf6 2652 SAVEOP();
533c011a 2653 PL_op = (OP*)&myop;
aa689395 2654
3280af22
NIS
2655 EXTEND(PL_stack_sp, 1);
2656 *++PL_stack_sp = sv;
aa689395 2657 oldmark = TOPMARK;
3280af22 2658 oldscope = PL_scopestack_ix;
a0d0e21e 2659
3280af22 2660 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2661 /* Handle first BEGIN of -d. */
3280af22 2662 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2663 /* Try harder, since this may have been a sighandler, thus
2664 * curstash may be meaningless. */
3280af22 2665 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2666 && !(flags & G_NODEBUG))
533c011a 2667 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2668
968b3946
GS
2669 if (flags & G_METHOD) {
2670 Zero(&method_op, 1, UNOP);
2671 method_op.op_next = PL_op;
2672 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2673 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2674 PL_op = (OP*)&method_op;
968b3946
GS
2675 }
2676
312caa8e 2677 if (!(flags & G_EVAL)) {
0cdb2077 2678 CATCH_SET(TRUE);
d6f07c05 2679 CALL_BODY_SUB((OP*)&myop);
312caa8e 2680 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2681 CATCH_SET(oldcatch);
312caa8e
CS
2682 }
2683 else {
d78bda3d 2684 myop.op_other = (OP*)&myop;
3280af22 2685 PL_markstack_ptr--;
edb2152a 2686 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2687 PL_markstack_ptr++;
a0d0e21e 2688
14dd3ad8 2689 JMPENV_PUSH(ret);
edb2152a 2690
6224f72b
GS
2691 switch (ret) {
2692 case 0:
14dd3ad8 2693 redo_body:
d6f07c05 2694 CALL_BODY_SUB((OP*)&myop);
312caa8e
CS
2695 retval = PL_stack_sp - (PL_stack_base + oldmark);
2696 if (!(flags & G_KEEPERR))
c69006e4 2697 sv_setpvn(ERRSV,"",0);
a0d0e21e 2698 break;
6224f72b 2699 case 1:
f86702cc 2700 STATUS_ALL_FAILURE;
a0d0e21e 2701 /* FALL THROUGH */
6224f72b 2702 case 2:
a0d0e21e 2703 /* my_exit() was called */
3280af22 2704 PL_curstash = PL_defstash;
a0d0e21e 2705 FREETMPS;
14dd3ad8 2706 JMPENV_POP;
cc3604b1 2707 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2708 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2709 my_exit_jump();
a0d0e21e 2710 /* NOTREACHED */
6224f72b 2711 case 3:
3280af22 2712 if (PL_restartop) {
533c011a 2713 PL_op = PL_restartop;
3280af22 2714 PL_restartop = 0;
312caa8e 2715 goto redo_body;
a0d0e21e 2716 }
3280af22 2717 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2718 if (flags & G_ARRAY)
2719 retval = 0;
2720 else {
2721 retval = 1;
3280af22 2722 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2723 }
312caa8e 2724 break;
a0d0e21e 2725 }
a0d0e21e 2726
edb2152a
NC
2727 if (PL_scopestack_ix > oldscope)
2728 delete_eval_scope();
14dd3ad8 2729 JMPENV_POP;
a0d0e21e 2730 }
1e422769 2731
a0d0e21e 2732 if (flags & G_DISCARD) {
3280af22 2733 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2734 retval = 0;
2735 FREETMPS;
2736 LEAVE;
2737 }
533c011a 2738 PL_op = oldop;
a0d0e21e
LW
2739 return retval;
2740}
2741
6e72f9df 2742/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2743
954c1994
GS
2744/*
2745=for apidoc p||eval_sv
2746
2747Tells Perl to C<eval> the string in the SV.
2748
2749=cut
2750*/
2751
a0d0e21e 2752I32
864dbfa3 2753Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2754
8ac85365 2755 /* See G_* flags in cop.h */
a0d0e21e 2756{
97aff369 2757 dVAR;
924508f0 2758 dSP;
a0d0e21e 2759 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2760 VOL I32 oldmark = SP - PL_stack_base;
2761 VOL I32 retval = 0;
6224f72b 2762 int ret;
c4420975 2763 OP* const oldop = PL_op;
db36c5a1 2764 dJMPENV;
84902520 2765
4633a7c4
LW
2766 if (flags & G_DISCARD) {
2767 ENTER;
2768 SAVETMPS;
2769 }
2770
462e5cf6 2771 SAVEOP();
533c011a
NIS
2772 PL_op = (OP*)&myop;
2773 Zero(PL_op, 1, UNOP);
3280af22
NIS
2774 EXTEND(PL_stack_sp, 1);
2775 *++PL_stack_sp = sv;
79072805 2776
4633a7c4
LW
2777 if (!(flags & G_NOARGS))
2778 myop.op_flags = OPf_STACKED;
5f66b61c 2779 myop.op_next = NULL;
6e72f9df 2780 myop.op_type = OP_ENTEREVAL;
54310121
PP
2781 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2782 (flags & G_ARRAY) ? OPf_WANT_LIST :
2783 OPf_WANT_SCALAR);
6e72f9df
PP
2784 if (flags & G_KEEPERR)
2785 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2786
dedbcade
DM
2787 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2788 * before a PUSHEVAL, which corrupts the stack after a croak */
2789 TAINT_PROPER("eval_sv()");
2790
14dd3ad8 2791 JMPENV_PUSH(ret);
6224f72b
GS
2792 switch (ret) {
2793 case 0:
14dd3ad8 2794 redo_body:
d6f07c05 2795 CALL_BODY_EVAL((OP*)&myop);
312caa8e
CS
2796 retval = PL_stack_sp - (PL_stack_base + oldmark);
2797 if (!(flags & G_KEEPERR))
c69006e4 2798 sv_setpvn(ERRSV,"",0);
4633a7c4 2799 break;
6224f72b 2800 case 1:
f86702cc 2801 STATUS_ALL_FAILURE;
4633a7c4 2802 /* FALL THROUGH */
6224f72b 2803 case 2:
4633a7c4 2804 /* my_exit() was called */
3280af22 2805 PL_curstash = PL_defstash;
4633a7c4 2806 FREETMPS;
14dd3ad8 2807 JMPENV_POP;
cc3604b1 2808 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2809 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2810 my_exit_jump();
4633a7c4 2811 /* NOTREACHED */
6224f72b 2812 case 3:
3280af22 2813 if (PL_restartop) {
533c011a 2814 PL_op = PL_restartop;
3280af22 2815 PL_restartop = 0;
312caa8e 2816 goto redo_body;
4633a7c4 2817 }
3280af22 2818 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2819 if (flags & G_ARRAY)
2820 retval = 0;
2821 else {
2822 retval = 1;
3280af22 2823 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2824 }
312caa8e 2825 break;
4633a7c4
LW
2826 }
2827
14dd3ad8 2828 JMPENV_POP;
4633a7c4 2829 if (flags & G_DISCARD) {
3280af22 2830 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2831 retval = 0;
2832 FREETMPS;
2833 LEAVE;
2834 }
533c011a 2835 PL_op = oldop;
4633a7c4
LW
2836 return retval;
2837}
2838
954c1994
GS
2839/*
2840=for apidoc p||eval_pv
2841
2842Tells Perl to C<eval> the given string and return an SV* result.
2843
2844=cut
2845*/
2846
137443ea 2847SV*
864dbfa3 2848Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2849{
97aff369 2850 dVAR;
137443ea
PP
2851 dSP;
2852 SV* sv = newSVpv(p, 0);
2853
864dbfa3 2854 eval_sv(sv, G_SCALAR);
137443ea
PP
2855 SvREFCNT_dec(sv);
2856
2857 SPAGAIN;
2858 sv = POPs;
2859 PUTBACK;
2860
2d8e6c8d 2861 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2862 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2863 }
137443ea
PP
2864
2865 return sv;
2866}
2867
4633a7c4
LW
2868/* Require a module. */
2869
954c1994 2870/*
ccfc67b7
JH
2871=head1 Embedding Functions
2872
954c1994
GS
2873=for apidoc p||require_pv
2874
7d3fb230
BS
2875Tells Perl to C<require> the file named by the string argument. It is
2876analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2877implemented that way; consider using load_module instead.
954c1994 2878
7d3fb230 2879=cut */
954c1994 2880
4633a7c4 2881void
864dbfa3 2882Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2883{
97aff369 2884 dVAR;
d3acc0f7 2885 dSP;
97aff369 2886 SV* sv;
e788e7d3 2887 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2888 PUTBACK;
be41e5d9
NC
2889 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2890 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2891 SPAGAIN;
2892 POPSTACK;
79072805
LW
2893}
2894
79072805 2895void
e1ec3a88 2896Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2897{
71315bf2 2898 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2899
c4420975 2900 if (gv)
14befaf4 2901 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2902}
2903
76e3520e 2904STATIC void
e1ec3a88 2905S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2906{
ab821d7f 2907 /* This message really ought to be max 23 lines.
75c72d73 2908 * Removed -h because the user already knows that option. Others? */
fb73857a 2909
27da23d5 2910 static const char * const usage_msg[] = {
aefc56c5
SF
2911"-0[octal] specify record separator (\\0, if no argument)",
2912"-A[mod][=pattern] activate all/given assertions",
2913"-a autosplit mode with -n or -p (splits $_ into @F)",
2914"-C[number/list] enables the listed Unicode features",
2915"-c check syntax only (runs BEGIN and CHECK blocks)",
2916"-d[:debugger] run program under debugger",
2917"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2918"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2919"-E program like -e, but enables all optional features",
aefc56c5 2920"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2921"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2922"-i[extension] edit <> files in place (makes backup if extension supplied)",
2923"-Idirectory specify @INC/#include directory (several -I's allowed)",
2924"-l[octal] enable line ending processing, specifies line terminator",
2925"-[mM][-]module execute \"use/no module...\" before executing program",
2926"-n assume \"while (<>) { ... }\" loop around program",
2927"-p assume loop like -n but print line also, like sed",
2928"-P run program through C preprocessor before compilation",
2929"-s enable rudimentary parsing for switches after programfile",
2930"-S look for programfile using PATH environment variable",
2931"-t enable tainting warnings",
2932"-T enable tainting checks",
2933"-u dump core after parsing program",
2934"-U allow unsafe operations",
2935"-v print version, subversion (includes VERY IMPORTANT perl info)",
2936"-V[:variable] print configuration summary (or a single Config.pm variable)",
2937"-w enable many useful warnings (RECOMMENDED)",
2938"-W enable all warnings",
2939"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2940"-X disable all warnings",
fb73857a
PP
2941"\n",
2942NULL
2943};
27da23d5 2944 const char * const *p = usage_msg;
fb73857a 2945
b0e47665
GS
2946 PerlIO_printf(PerlIO_stdout(),
2947 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2948 name);
fb73857a 2949 while (*p)
b0e47665 2950 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2951}
2952
b4ab917c
DM
2953/* convert a string of -D options (or digits) into an int.
2954 * sets *s to point to the char after the options */
2955
2956#ifdef DEBUGGING
2957int
e1ec3a88 2958Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2959{
27da23d5 2960 static const char * const usage_msgd[] = {
e6e64d9b
JC
2961 " Debugging flag values: (see also -d)",
2962 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2963 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2964 " l Context (loop) stack processing",
2965 " t Trace execution",
2966 " o Method and overloading resolution",
2967 " c String/numeric conversions",
2968 " P Print profiling info, preprocessor command for -P, source file input state",
2969 " m Memory allocation",
2970 " f Format processing",
2971 " r Regular expression parsing and execution",
2972 " x Syntax tree dump",
3679267a 2973 " u Tainting checks",
e6e64d9b
JC
2974 " H Hash dump -- usurps values()",
2975 " X Scratchpad allocation",
2976 " D Cleaning up",
2977 " S Thread synchronization",
2978 " T Tokenising",
2979 " R Include reference counts of dumped variables (eg when using -Ds)",
2980 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2981 " v Verbose: use in conjunction with other flags",
2982 " C Copy On Write",
2983 " A Consistency checks on internal structures",
3679267a 2984 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2985 NULL
2986 };
b4ab917c
DM
2987 int i = 0;
2988 if (isALPHA(**s)) {
2989 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2990 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2991
2992 for (; isALNUM(**s); (*s)++) {
c4420975 2993 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2994 if (d)
2995 i |= 1 << (d - debopts);
2996 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2997 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2998 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2999 }
3000 }
e6e64d9b 3001 else if (isDIGIT(**s)) {
b4ab917c
DM
3002 i = atoi(*s);
3003 for (; isALNUM(**s); (*s)++) ;
3004 }
ddcf8bc1 3005 else if (givehelp) {
06e869a4 3006 const char *const *p = usage_msgd;
e6e64d9b
JC
3007 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
3008 }
b4ab917c
DM
3009# ifdef EBCDIC
3010 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3011 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3012 "-Dp not implemented on this platform\n");
3013# endif
3014 return i;
3015}
3016#endif
3017
79072805
LW
3018/* This routine handles any switches that can be given during run */
3019
3020char *
97bd5664 3021Perl_moreswitches(pTHX_ char *s)
79072805 3022{
27da23d5 3023 dVAR;
84c133a0 3024 UV rschar;
79072805
LW
3025
3026 switch (*s) {
3027 case '0':
a863c7d1 3028 {
f2095865 3029 I32 flags = 0;
a3b680e6 3030 STRLEN numlen;
f2095865
JH
3031
3032 SvREFCNT_dec(PL_rs);
3033 if (s[1] == 'x' && s[2]) {
a3b680e6 3034 const char *e = s+=2;
f2095865
JH
3035 U8 *tmps;
3036
a3b680e6
AL
3037 while (*e)
3038 e++;
f2095865
JH
3039 numlen = e - s;
3040 flags = PERL_SCAN_SILENT_ILLDIGIT;
3041 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3042 if (s + numlen < e) {
3043 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3044 numlen = 0;
3045 s--;
3046 }
396482e1 3047 PL_rs = newSVpvs("");
c5661c80 3048 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3049 tmps = (U8*)SvPVX(PL_rs);
3050 uvchr_to_utf8(tmps, rschar);
3051 SvCUR_set(PL_rs, UNISKIP(rschar));
3052 SvUTF8_on(PL_rs);
3053 }
3054 else {
3055 numlen = 4;
3056 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3057 if (rschar & ~((U8)~0))
3058 PL_rs = &PL_sv_undef;
3059 else if (!rschar && numlen >= 2)
396482e1 3060 PL_rs = newSVpvs("");
f2095865
JH
3061 else {
3062 char ch = (char)rschar;
3063 PL_rs = newSVpvn(&ch, 1);
3064 }
3065 }
800633c3 3066 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3067 return s + numlen;
a863c7d1 3068 }
46487f74 3069 case 'C':
a05d7ebb 3070 s++;
dd374669 3071 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3072 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3073 PL_utf8cache = -1;
46487f74 3074 return s;
2304df62 3075 case 'F':
3280af22 3076 PL_minus_F = TRUE;
ebce5377
RGS
3077 PL_splitstr = ++s;
3078 while (*s && !isSPACE(*s)) ++s;
e49e380e 3079 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3080 return s;
79072805 3081 case 'a':
3280af22 3082 PL_minus_a = TRUE;
79072805
LW
3083 s++;
3084 return s;
3085 case 'c':
3280af22 3086 PL_minus_c = TRUE;
79072805
LW
3087 s++;
3088 return s;
3089 case 'd':
97bd5664 3090 forbid_setid('d', -1);
4633a7c4 3091 s++;
2cbb2ee1
RGS
3092
3093 /* -dt indicates to the debugger that threads will be used */
3094 if (*s == 't' && !isALNUM(s[1])) {
3095 ++s;
3096 my_setenv("PERL5DB_THREADED", "1");
3097 }
3098
70c94a19
RR
3099 /* The following permits -d:Mod to accepts arguments following an =
3100 in the fashion that -MSome::Mod does. */
3101 if (*s == ':' || *s == '=') {
06b5626a 3102 const char *start;
396482e1 3103 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3104 start = ++s;
3105 /* We now allow -d:Module=Foo,Bar */
3106 while(isALNUM(*s) || *s==':') ++s;
3107 if (*s != '=')
3108 sv_catpv(sv, start);
3109 else {
3110 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3111 /* Don't use NUL as q// delimiter here, this string goes in the
3112 * environment. */
3113 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3114 }
4633a7c4 3115 s += strlen(s);
184f32ec 3116 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3117 }
ed094faf 3118 if (!PL_perldb) {
3280af22 3119 PL_perldb = PERLDB_ALL;
a0d0e21e 3120 init_debugger();
ed094faf 3121 }
79072805
LW
3122 return s;
3123 case 'D':
0453d815 3124 {
79072805 3125#ifdef DEBUGGING
97bd5664 3126 forbid_setid('D', -1);
b4ab917c 3127 s++;
dd374669 3128 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3129#else /* !DEBUGGING */
0453d815 3130 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3131 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3132 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3133 for (s++; isALNUM(*s); s++) ;
79072805 3134#endif
79072805 3135 return s;
0453d815 3136 }
4633a7c4 3137 case 'h':
ac27b0f5 3138 usage(PL_origargv[0]);
7ca617d0 3139 my_exit(0);
79072805 3140 case 'i':
43c5f42d 3141 Safefree(PL_inplace);
c030f24b
GH
3142#if defined(__CYGWIN__) /* do backup extension automagically */
3143 if (*(s+1) == '\0') {
c86a4f2e 3144 PL_inplace = savepvs(".bak");
c030f24b
GH
3145 return s+1;
3146 }
3147#endif /* __CYGWIN__ */
5ef5d758 3148 {
d4c19fe8 3149 const char * const start = ++s;
5ef5d758
NC
3150 while (*s && !isSPACE(*s))
3151 ++s;
3152
3153 PL_inplace = savepvn(start, s - start);
3154 }
7b8d334a 3155 if (*s) {
5ef5d758 3156 ++s;
7b8d334a 3157 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3158 s++;
7b8d334a 3159 }
fb73857a 3160 return s;
4e49a025 3161 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3162 forbid_setid('I', -1);
fb73857a
PP
3163 ++s;
3164 while (*s && isSPACE(*s))
3165 ++s;
3166 if (*s) {
774d564b 3167 char *e, *p;
0df16ed7
GS
3168 p = s;
3169 /* ignore trailing spaces (possibly followed by other switches) */
3170 do {
3171 for (e = p; *e && !isSPACE(*e); e++) ;
3172 p = e;
3173 while (isSPACE(*p))
3174 p++;
3175 } while (*p && *p != '-');
3176 e = savepvn(s, e-s);
88fe16b2 3177 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3178 Safefree(e);
3179 s = p;
3180 if (*s == '-')
3181 s++;
79072805
LW
3182 }
3183 else
a67e862a 3184 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3185 return s;
79072805 3186 case 'l':
3280af22 3187 PL_minus_l = TRUE;
79072805 3188 s++;
7889fe52
NIS
3189 if (PL_ors_sv) {
3190 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3191 PL_ors_sv = NULL;
7889fe52 3192 }
79072805 3193 if (isDIGIT(*s)) {
53305cf1 3194 I32 flags = 0;
a3b680e6 3195 STRLEN numlen;
396482e1 3196 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3197 numlen = 3 + (*s == '0');
3198 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3199 s += numlen;
3200 }
3201 else {
8bfdd7d9 3202 if (RsPARA(PL_rs)) {
396482e1 3203 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3204 }
3205 else {
8bfdd7d9 3206 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3207 }
79072805
LW
3208 }
3209 return s;
06492da6 3210 case 'A':
97bd5664 3211 forbid_setid('A', -1);
aefc56c5
SF
3212 s++;
3213 {
44f8325f 3214 char * const start = s;
396482e1 3215 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3216 while(isALNUM(*s) || *s == ':') ++s;
3217 if (s != start) {
396482e1 3218 sv_catpvs(sv, "::");
aefc56c5
SF
3219 sv_catpvn(sv, start, s-start);
3220 }
3221 if (*s == '=') {
0c5a913d 3222 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3223 s+=strlen(s);
3224 }
3225 else if (*s != '\0') {
551405c4 3226 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3227 }
29a861e7 3228 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
aefc56c5 3229 return s;
06492da6 3230 }
1a30305b 3231 case 'M':
97bd5664 3232 forbid_setid('M', -1); /* XXX ? */
1a30305b
PP
3233 /* FALL THROUGH */
3234 case 'm':
97bd5664 3235 forbid_setid('m', -1); /* XXX ? */
1a30305b 3236 if (*++s) {
a5f75d66 3237 char *start;
11343788 3238 SV *sv;
e1ec3a88 3239 const char *use = "use ";
a5f75d66 3240 /* -M-foo == 'no foo' */
d0043bd1
NC
3241 /* Leading space on " no " is deliberate, to make both
3242 possibilities the same length. */
3243 if (*s == '-') { use = " no "; ++s; }
3244 sv = newSVpvn(use,4);
a5f75d66 3245 start = s;
1a30305b 3246 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3247 while(isALNUM(*s) || *s==':') ++s;
3248 if (*s != '=') {
11343788 3249 sv_catpv(sv, start);
c07a80fd
PP
3250 if (*(start-1) == 'm') {
3251 if (*s != '\0')
cea2e8a9 3252 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3253 sv_catpvs( sv, " ()");
c07a80fd
PP
3254 }
3255 } else {
6df41af2 3256 if (s == start)
be98fb35
GS
3257 Perl_croak(aTHX_ "Module name required with -%c option",
3258 s[-1]);
11343788 3259 sv_catpvn(sv, start, s-start);
396482e1
GA
3260 sv_catpvs(sv, " split(/,/,q");
3261 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3262 sv_catpv(sv, ++s);
396482e1 3263 sv_catpvs(sv, "\0)");
c07a80fd 3264 }
1a30305b 3265 s += strlen(s);
29a861e7 3266 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3267 }
3268 else
9e81e6a1 3269 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3270 return s;
79072805 3271 case 'n':
3280af22 3272 PL_minus_n = TRUE;
79072805
LW
3273 s++;
3274 return s;
3275 case 'p':
3280af22 3276 PL_minus_p = TRUE;
79072805
LW
3277 s++;
3278 return s;
3279 case 's':
97bd5664 3280 forbid_setid('s', -1);
3280af22 3281 PL_doswitches = TRUE;
79072805
LW
3282 s++;
3283 return s;
6537fe72
MS
3284 case 't':
3285 if (!PL_tainting)
22f7c9c9 3286 TOO_LATE_FOR('t');
6537fe72
MS
3287 s++;
3288 return s;
463ee0b2 3289 case 'T':
3280af22 3290 if (!PL_tainting)
22f7c9c9 3291 TOO_LATE_FOR('T');
463ee0b2
LW
3292 s++;
3293 return s;
79072805 3294 case 'u':
bf4acbe4
GS
3295#ifdef MACOS_TRADITIONAL
3296 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3297#endif
3280af22 3298 PL_do_undump = TRUE;
79072805
LW
3299 s++;
3300 return s;
3301 case 'U':
3280af22 3302 PL_unsafe = TRUE;
79072805
LW
3303 s++;
3304 return s;
3305 case 'v':
d7aa5382 3306 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3307 upg_version(PL_patchlevel, TRUE);
8e9464f1 3308#if !defined(DGUX)
b0e47665 3309 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3310 Perl_form(aTHX_ "\nThis is perl, %"SVf
3311#ifdef PERL_PATCHNUM
3312 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3313#endif
3314 " built for %s",
be2597df 3315 SVfARG(vstringify(PL_patchlevel)),
95b63a38 3316 ARCHNAME));
8e9464f1
JH
3317#else /* DGUX */
3318/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3319 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3320 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3321 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3322 PerlIO_printf(PerlIO_stdout(),
3323 Perl_form(aTHX_ " built under %s at %s %s\n",
3324 OSNAME, __DATE__, __TIME__));
3325 PerlIO_printf(PerlIO_stdout(),
3326 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3327 OSVERS));
8e9464f1
JH
3328#endif /* !DGUX */
3329
fb73857a
PP
3330#if defined(LOCAL_PATCH_COUNT)
3331 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3332 PerlIO_printf(PerlIO_stdout(),
3333 "\n(with %d registered patch%s, "
3334 "see perl -V for more detail)",
bb7a0f54 3335 LOCAL_PATCH_COUNT,
b0e47665 3336 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3337#endif
1a30305b 3338
b0e47665 3339 PerlIO_printf(PerlIO_stdout(),
34ce1597 3340 "\n\nCopyright 1987-2007, Larry Wall\n");
eae9c151
JH
3341#ifdef MACOS_TRADITIONAL
3342 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3343 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3344 "maintained by Chris Nandor\n");
eae9c151 3345#endif
79072805 3346#ifdef MSDOS
b0e47665
GS
3347 PerlIO_printf(PerlIO_stdout(),
3348 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3349#endif
3350#ifdef DJGPP
b0e47665
GS
3351 PerlIO_printf(PerlIO_stdout(),
3352 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3353 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3354#endif
79072805 3355#ifdef OS2
b0e47665
GS
3356 PerlIO_printf(PerlIO_stdout(),
3357 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3358 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3359#endif
79072805 3360#ifdef atarist
b0e47665
GS
3361 PerlIO_printf(PerlIO_stdout(),
3362 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3363#endif
a3f9223b 3364#ifdef __BEOS__
b0e47665
GS
3365 PerlIO_printf(PerlIO_stdout(),
3366 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3367#endif
1d84e8df 3368#ifdef MPE
b0e47665 3369 PerlIO_printf(PerlIO_stdout(),
e583a879 3370 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3371#endif
9d116dd7 3372#ifdef OEMVS
b0e47665
GS
3373 PerlIO_printf(PerlIO_stdout(),
3374 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3375#endif
495c5fdc 3376#ifdef __VOS__
b0e47665 3377 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3378 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3379#endif
092bebab 3380#ifdef __OPEN_VM
b0e47665
GS
3381 PerlIO_printf(PerlIO_stdout(),
3382 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3383#endif
a1a0e61e 3384#ifdef POSIX_BC
b0e47665
GS
3385 PerlIO_printf(PerlIO_stdout(),
3386 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3387#endif
61ae2fbf 3388#ifdef __MINT__
b0e47665
GS
3389 PerlIO_printf(PerlIO_stdout(),
3390 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3391#endif
f83d2536 3392#ifdef EPOC
b0e47665 3393 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3394 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3395#endif
e1caacb4 3396#ifdef UNDER_CE
b475b3e6
JH
3397 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3398 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3399 wce_hitreturn();
3400#endif
a0fd4948 3401#ifdef __SYMBIAN32__
27da23d5
JH
3402 PerlIO_printf(PerlIO_stdout(),
3403 "Symbian port by Nokia, 2004-2005\n");
3404#endif
baed7233
DL
3405#ifdef BINARY_BUILD_NOTICE
3406 BINARY_BUILD_NOTICE;
3407#endif
b0e47665
GS
3408 PerlIO_printf(PerlIO_stdout(),
3409 "\n\
79072805 3410Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3411GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3412Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3413this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3414Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3415 my_exit(0);
79072805 3416 case 'w':
b2e5e6ba 3417 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3418 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3419 }
599cee73
PM
3420 s++;
3421 return s;
3422 case 'W':
ac27b0f5 3423 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3424 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3425 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3426 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3427 s++;
3428 return s;
3429 case 'X':
ac27b0f5 3430 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3431 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3432 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3433 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3434 s++;
3435 return s;
a0d0e21e 3436 case '*':
79072805
LW
3437 case ' ':
3438 if (s[1] == '-') /* Additional switches on #! line. */
3439 return s+2;
3440 break;
a0d0e21e 3441 case '-':
79072805 3442 case 0:
51882d45 3443#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3444 case '\r':
3445#endif
79072805
LW
3446 case '\n':
3447 case '\t':
3448 break;
aa689395
PP
3449#ifdef ALTERNATE_SHEBANG
3450 case 'S': /* OS/2 needs -S on "extproc" line. */
3451 break;
3452#endif
a0d0e21e 3453 case 'P':
3280af22 3454 if (PL_preprocess)
a0d0e21e
LW
3455 return s+1;
3456 /* FALL THROUGH */
79072805 3457 default:
cea2e8a9 3458 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3459 }
bd61b366 3460 return NULL;
79072805
LW
3461}
3462
3463/* compliments of Tom Christiansen */
3464
3465/* unexec() can be found in the Gnu emacs distribution */
ee580363 3466/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3467
3468void
864dbfa3 3469Perl_my_unexec(pTHX)
79072805 3470{
b37c2d43 3471 PERL_UNUSED_CONTEXT;
79072805 3472#ifdef UNEXEC
b37c2d43
AL
3473 SV * prog = newSVpv(BIN_EXP, 0);
3474 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3475 int status = 1;
79072805
LW
3476 extern int etext;
3477
396482e1 3478 sv_catpvs(prog, "/perl");
396482e1 3479 sv_catpvs(file, ".perldump");
79072805 3480
ee580363
GS
3481 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3482 /* unexec prints msg to stderr in case of failure */
6ad3d225 3483 PerlProc_exit(status);
79072805 3484#else
a5f75d66
AD
3485# ifdef VMS
3486# include <lib$routines.h>
3487 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3488# elif defined(WIN32) || defined(__CYGWIN__)
3489 Perl_croak(aTHX_ "dump is not supported");
aa689395 3490# else
79072805 3491 ABORT(); /* for use with undump */
aa689395 3492# endif
a5f75d66 3493#endif
79072805
LW
3494}
3495
cb68f92d
GS
3496/* initialize curinterp */
3497STATIC void
cea2e8a9 3498S_init_interp(pTHX)
cb68f92d 3499{
97aff369 3500 dVAR;
acfe0abc
GS
3501#ifdef MULTIPLICITY
3502# define PERLVAR(var,type)
3503# define PERLVARA(var,n,type)
3504# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3505# define PERLVARI(var,type,init) aTHX->var = init;
3506# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3507# else
acfe0abc
GS
3508# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3509# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3510# endif