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1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3246d7a3 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
a687059c 5 *
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6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
a687059c 8 *
8d063cd8
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9 */
10
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11/*
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
13 */
45d8adaa 14
166f8a29
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15/* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
19 */
20
ae3f3efd
PS
21/* PSz 12 Nov 03
22 *
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
26 *
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
32 *
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
38 *
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
42 *
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
45 *
46 * References:
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
55 * CVE candidate:
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
011f1a1a
JH
85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
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95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
bf357333
NC
99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
2aa47728
NC
108#endif
109
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110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
e6827a76 140static void
daa7d858 141S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 142{
27da23d5 143 dVAR;
e6827a76
NC
144 if (!PL_curinterp) {
145 PERL_SET_INTERP(my_perl);
3db8f154 146#if defined(USE_ITHREADS)
e6827a76
NC
147 INIT_THREADS;
148 ALLOC_THREAD_KEY;
149 PERL_SET_THX(my_perl);
150 OP_REFCNT_INIT;
151 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 152# endif
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153#ifdef PERL_IMPLICIT_CONTEXT
154 MUTEX_INIT(&PL_my_ctx_mutex);
155# endif
e6827a76
NC
156 }
157 else {
158 PERL_SET_THX(my_perl);
159 }
160}
06d86050 161
32e30700
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162#ifdef PERL_IMPLICIT_SYS
163PerlInterpreter *
7766f137
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164perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
165 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
166 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
167 struct IPerlDir* ipD, struct IPerlSock* ipS,
168 struct IPerlProc* ipP)
169{
170 PerlInterpreter *my_perl;
9f653bb5 171 /* Newx() needs interpreter, so call malloc() instead */
32e30700 172 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 173 S_init_tls_and_interp(my_perl);
32e30700
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174 Zero(my_perl, 1, PerlInterpreter);
175 PL_Mem = ipM;
7766f137
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176 PL_MemShared = ipMS;
177 PL_MemParse = ipMP;
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GS
178 PL_Env = ipE;
179 PL_StdIO = ipStd;
180 PL_LIO = ipLIO;
181 PL_Dir = ipD;
182 PL_Sock = ipS;
183 PL_Proc = ipP;
7766f137 184
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185 return my_perl;
186}
187#else
954c1994
GS
188
189/*
ccfc67b7
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190=head1 Embedding Functions
191
954c1994
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192=for apidoc perl_alloc
193
194Allocates a new Perl interpreter. See L<perlembed>.
195
196=cut
197*/
198
93a17b20 199PerlInterpreter *
cea2e8a9 200perl_alloc(void)
79072805 201{
cea2e8a9 202 PerlInterpreter *my_perl;
79072805 203
9f653bb5 204 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 205 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 206
e6827a76 207 S_init_tls_and_interp(my_perl);
07409e01 208 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
79072805 209}
32e30700 210#endif /* PERL_IMPLICIT_SYS */
79072805 211
954c1994
GS
212/*
213=for apidoc perl_construct
214
215Initializes a new Perl interpreter. See L<perlembed>.
216
217=cut
218*/
219
79072805 220void
0cb96387 221perl_construct(pTHXx)
79072805 222{
27da23d5 223 dVAR;
9d4ba2ae 224 PERL_UNUSED_ARG(my_perl);
8990e307 225#ifdef MULTIPLICITY
54aff467 226 init_interp();
ac27b0f5 227 PL_perl_destruct_level = 1;
54aff467
GS
228#else
229 if (PL_perl_destruct_level > 0)
230 init_interp();
231#endif
33f46ff6 232 /* Init the real globals (and main thread)? */
3280af22 233 if (!PL_linestr) {
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234 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
235
561b68a9 236 PL_linestr = newSV(79);
3280af22 237 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 238
3280af22 239 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
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240 /* set read-only and try to insure than we wont see REFCNT==0
241 very often */
242
3280af22
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243 SvREADONLY_on(&PL_sv_undef);
244 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 245
3280af22 246 sv_setpv(&PL_sv_no,PL_No);
0309f36e
NC
247 /* value lookup in void context - happens to have the side effect
248 of caching the numeric forms. */
249 SvIV(&PL_sv_no);
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250 SvNV(&PL_sv_no);
251 SvREADONLY_on(&PL_sv_no);
252 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 253
3280af22 254 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 255 SvIV(&PL_sv_yes);
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NIS
256 SvNV(&PL_sv_yes);
257 SvREADONLY_on(&PL_sv_yes);
258 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
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259
260 SvREADONLY_on(&PL_sv_placeholder);
261 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 262 }
79072805 263
8aad04aa 264 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 265#ifdef PERL_USES_PL_PIDSTATUS
3280af22 266 PL_pidstatus = newHV();
ca0c25f6 267#endif
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268 }
269
396482e1 270 PL_rs = newSVpvs("\n");
dc92893f 271
cea2e8a9 272 init_stacks();
79072805 273
748a9306 274 init_ids();
3280af22 275 PL_lex_state = LEX_NOTPARSING;
a5f75d66 276
312caa8e 277 JMPENV_BOOTSTRAP;
f86702cc
PP
278 STATUS_ALL_SUCCESS;
279
0672f40e 280 init_i18nl10n(1);
36477c24 281 SET_NUMERIC_STANDARD();
0b5b802d 282
ab821d7f 283#if defined(LOCAL_PATCH_COUNT)
3280af22 284 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
285#endif
286
52853b95
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287#ifdef HAVE_INTERP_INTERN
288 sys_intern_init();
289#endif
290
3a1ee7e8 291 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 292
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293 PL_fdpid = newAV(); /* for remembering popen pids by fd */
294 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 295 PL_errors = newSVpvs("");
48c6b404 296 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
297 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
298 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 299#ifdef USE_ITHREADS
13137afc
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300 PL_regex_padav = newAV();
301 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
302 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 303#endif
e5dd39fc 304#ifdef USE_REENTRANT_API
59bd0823 305 Perl_reentrant_init(aTHX);
e5dd39fc 306#endif
3d47000e
AB
307
308 /* Note that strtab is a rather special HV. Assumptions are made
309 about not iterating on it, and not adding tie magic to it.
310 It is properly deallocated in perl_destruct() */
311 PL_strtab = newHV();
312
3d47000e
AB
313 HvSHAREKEYS_off(PL_strtab); /* mandatory */
314 hv_ksplit(PL_strtab, 512);
315
0631ea03
AB
316#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
317 _dyld_lookup_and_bind
318 ("__environ", (unsigned long *) &environ_pointer, NULL);
319#endif /* environ */
320
2f42fcb0
JH
321#ifndef PERL_MICRO
322# ifdef USE_ENVIRON_ARRAY
0631ea03 323 PL_origenviron = environ;
2f42fcb0 324# endif
0631ea03
AB
325#endif
326
5311654c 327 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 328 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
329 * BeOS has those, but returns the wrong value.
330 * The HZ if not originally defined has been by now
331 * been defined as CLK_TCK, if available. */
dbc1d986 332#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
333 PL_clocktick = sysconf(_SC_CLK_TCK);
334 if (PL_clocktick <= 0)
335#endif
336 PL_clocktick = HZ;
337
081fc587
AB
338 PL_stashcache = newHV();
339
e6830b13
NC
340 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
341 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 342
27da23d5
JH
343#ifdef HAS_MMAP
344 if (!PL_mmap_page_size) {
345#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
346 {
347 SETERRNO(0, SS_NORMAL);
348# ifdef _SC_PAGESIZE
349 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
350# else
351 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
352# endif
353 if ((long) PL_mmap_page_size < 0) {
354 if (errno) {
44f8325f 355 SV * const error = ERRSV;
27da23d5 356 (void) SvUPGRADE(error, SVt_PV);
0510663f 357 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
358 }
359 else
360 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
361 }
362 }
363#else
364# ifdef HAS_GETPAGESIZE
365 PL_mmap_page_size = getpagesize();
366# else
367# if defined(I_SYS_PARAM) && defined(PAGESIZE)
368 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
369# endif
370# endif
371#endif
372 if (PL_mmap_page_size <= 0)
373 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
374 (IV) PL_mmap_page_size);
375 }
376#endif /* HAS_MMAP */
377
378#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
379 PL_timesbase.tms_utime = 0;
380 PL_timesbase.tms_stime = 0;
381 PL_timesbase.tms_cutime = 0;
382 PL_timesbase.tms_cstime = 0;
383#endif
384
8990e307 385 ENTER;
79072805
LW
386}
387
954c1994 388/*
62375a60
NIS
389=for apidoc nothreadhook
390
391Stub that provides thread hook for perl_destruct when there are
392no threads.
393
394=cut
395*/
396
397int
4e9e3734 398Perl_nothreadhook(pTHX)
62375a60
NIS
399{
400 return 0;
401}
402
41e4abd8
NC
403#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
404void
405Perl_dump_sv_child(pTHX_ SV *sv)
406{
407 ssize_t got;
bf357333
NC
408 const int sock = PL_dumper_fd;
409 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
410 union control_un control;
411 struct msghdr msg;
808ad2d0 412 struct iovec vec[2];
bf357333 413 struct cmsghdr *cmptr;
808ad2d0
NC
414 int returned_errno;
415 unsigned char buffer[256];
41e4abd8 416
bf357333 417 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
418 return;
419
420 PerlIO_flush(Perl_debug_log);
421
bf357333
NC
422 /* All these shenanigans are to pass a file descriptor over to our child for
423 it to dump out to. We can't let it hold open the file descriptor when it
424 forks, as the file descriptor it will dump to can turn out to be one end
425 of pipe that some other process will wait on for EOF. (So as it would
426 be open, the wait would be forever. */
427
428 msg.msg_control = control.control;
429 msg.msg_controllen = sizeof(control.control);
430 /* We're a connected socket so we don't need a destination */
431 msg.msg_name = NULL;
432 msg.msg_namelen = 0;
433 msg.msg_iov = vec;
808ad2d0 434 msg.msg_iovlen = 1;
bf357333
NC
435
436 cmptr = CMSG_FIRSTHDR(&msg);
437 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
438 cmptr->cmsg_level = SOL_SOCKET;
439 cmptr->cmsg_type = SCM_RIGHTS;
440 *((int *)CMSG_DATA(cmptr)) = 1;
441
442 vec[0].iov_base = (void*)&sv;
443 vec[0].iov_len = sizeof(sv);
444 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
445
446 if(got < 0) {
bf357333 447 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
448 abort();
449 }
bf357333
NC
450 if(got < sizeof(sv)) {
451 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
452 abort();
453 }
454
808ad2d0
NC
455 /* Return protocol is
456 int: errno value
457 unsigned char: length of location string (0 for empty)
458 unsigned char*: string (not terminated)
459 */
460 vec[0].iov_base = (void*)&returned_errno;
461 vec[0].iov_len = sizeof(returned_errno);
462 vec[1].iov_base = buffer;
463 vec[1].iov_len = 1;
464
465 got = readv(sock, vec, 2);
41e4abd8
NC
466
467 if(got < 0) {
468 perror("Debug leaking scalars parent read failed");
808ad2d0 469 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
470 abort();
471 }
808ad2d0 472 if(got < sizeof(returned_errno) + 1) {
41e4abd8 473 perror("Debug leaking scalars parent short read");
808ad2d0 474 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
475 abort();
476 }
477
808ad2d0
NC
478 if (*buffer) {
479 got = read(sock, buffer + 1, *buffer);
480 if(got < 0) {
481 perror("Debug leaking scalars parent read 2 failed");
482 PerlIO_flush(PerlIO_stderr());
483 abort();
484 }
485
486 if(got < *buffer) {
487 perror("Debug leaking scalars parent short read 2");
488 PerlIO_flush(PerlIO_stderr());
489 abort();
490 }
491 }
492
493 if (returned_errno || *buffer) {
494 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
495 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
496 returned_errno, strerror(returned_errno));
41e4abd8
NC
497 }
498}
499#endif
500
62375a60 501/*
954c1994
GS
502=for apidoc perl_destruct
503
504Shuts down a Perl interpreter. See L<perlembed>.
505
506=cut
507*/
508
31d77e54 509int
0cb96387 510perl_destruct(pTHXx)
79072805 511{
27da23d5 512 dVAR;
7c474504 513 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 514 HV *hv;
2aa47728 515#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
516 pid_t child;
517#endif
8990e307 518
9d4ba2ae
AL
519 PERL_UNUSED_ARG(my_perl);
520
7766f137
GS
521 /* wait for all pseudo-forked children to finish */
522 PERL_WAIT_FOR_CHILDREN;
523
3280af22 524 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
525#ifdef DEBUGGING
526 {
9d4ba2ae
AL
527 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
528 if (s) {
e1ec3a88 529 const int i = atoi(s);
5f05dabc
PP
530 if (destruct_level < i)
531 destruct_level = i;
532 }
4633a7c4
LW
533 }
534#endif
535
27da23d5 536 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
537 dJMPENV;
538 int x = 0;
539
540 JMPENV_PUSH(x);
1b6737cc 541 PERL_UNUSED_VAR(x);
f3faeb53
AB
542 if (PL_endav && !PL_minus_c)
543 call_list(PL_scopestack_ix, PL_endav);
544 JMPENV_POP;
26f423df 545 }
f3faeb53 546 LEAVE;
a0d0e21e
LW
547 FREETMPS;
548
e00b64d4 549 /* Need to flush since END blocks can produce output */
f13a2bc0 550 my_fflush_all();
e00b64d4 551
62375a60
NIS
552 if (CALL_FPTR(PL_threadhook)(aTHX)) {
553 /* Threads hook has vetoed further cleanup */
37038d91 554 return STATUS_EXIT;
62375a60
NIS
555 }
556
2aa47728
NC
557#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
558 if (destruct_level != 0) {
559 /* Fork here to create a child. Our child's job is to preserve the
560 state of scalars prior to destruction, so that we can instruct it
561 to dump any scalars that we later find have leaked.
562 There's no subtlety in this code - it assumes POSIX, and it doesn't
563 fail gracefully */
564 int fd[2];
565
566 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
567 perror("Debug leaking scalars socketpair failed");
568 abort();
569 }
570
571 child = fork();
572 if(child == -1) {
573 perror("Debug leaking scalars fork failed");
574 abort();
575 }
576 if (!child) {
577 /* We are the child */
3125a5a4
NC
578 const int sock = fd[1];
579 const int debug_fd = PerlIO_fileno(Perl_debug_log);
580 int f;
808ad2d0
NC
581 const char *where;
582 /* Our success message is an integer 0, and a char 0 */
583 static const char success[sizeof(int) + 1];
3125a5a4 584
2aa47728 585 close(fd[0]);
2aa47728 586
3125a5a4
NC
587 /* We need to close all other file descriptors otherwise we end up
588 with interesting hangs, where the parent closes its end of a
589 pipe, and sits waiting for (another) child to terminate. Only
590 that child never terminates, because it never gets EOF, because
bf357333
NC
591 we also have the far end of the pipe open. We even need to
592 close the debugging fd, because sometimes it happens to be one
593 end of a pipe, and a process is waiting on the other end for
594 EOF. Normally it would be closed at some point earlier in
595 destruction, but if we happen to cause the pipe to remain open,
596 EOF never occurs, and we get an infinite hang. Hence all the
597 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
598
599 f = sysconf(_SC_OPEN_MAX);
600 if(f < 0) {
808ad2d0
NC
601 where = "sysconf failed";
602 goto abort;
3125a5a4
NC
603 }
604 while (f--) {
605 if (f == sock)
606 continue;
3125a5a4
NC
607 close(f);
608 }
609
2aa47728
NC
610 while (1) {
611 SV *target;
bf357333
NC
612 union control_un control;
613 struct msghdr msg;
614 struct iovec vec[1];
615 struct cmsghdr *cmptr;
616 ssize_t got;
617 int got_fd;
618
619 msg.msg_control = control.control;
620 msg.msg_controllen = sizeof(control.control);
621 /* We're a connected socket so we don't need a source */
622 msg.msg_name = NULL;
623 msg.msg_namelen = 0;
624 msg.msg_iov = vec;
625 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
626
627 vec[0].iov_base = (void*)&target;
628 vec[0].iov_len = sizeof(target);
629
630 got = recvmsg(sock, &msg, 0);
2aa47728
NC
631
632 if(got == 0)
633 break;
634 if(got < 0) {
808ad2d0
NC
635 where = "recv failed";
636 goto abort;
2aa47728
NC
637 }
638 if(got < sizeof(target)) {
808ad2d0
NC
639 where = "short recv";
640 goto abort;
2aa47728 641 }
bf357333 642
808ad2d0
NC
643 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
644 where = "no cmsg";
645 goto abort;
646 }
647 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
648 where = "wrong cmsg_len";
649 goto abort;
650 }
651 if(cmptr->cmsg_level != SOL_SOCKET) {
652 where = "wrong cmsg_level";
653 goto abort;
654 }
655 if(cmptr->cmsg_type != SCM_RIGHTS) {
656 where = "wrong cmsg_type";
657 goto abort;
658 }
bf357333
NC
659
660 got_fd = *(int*)CMSG_DATA(cmptr);
661 /* For our last little bit of trickery, put the file descriptor
662 back into Perl_debug_log, as if we never actually closed it
663 */
808ad2d0
NC
664 if(got_fd != debug_fd) {
665 if (dup2(got_fd, debug_fd) == -1) {
666 where = "dup2";
667 goto abort;
668 }
669 }
2aa47728 670 sv_dump(target);
bf357333 671
2aa47728
NC
672 PerlIO_flush(Perl_debug_log);
673
808ad2d0 674 got = write(sock, &success, sizeof(success));
2aa47728
NC
675
676 if(got < 0) {
808ad2d0
NC
677 where = "write failed";
678 goto abort;
2aa47728 679 }
808ad2d0
NC
680 if(got < sizeof(success)) {
681 where = "short write";
682 goto abort;
2aa47728
NC
683 }
684 }
685 _exit(0);
808ad2d0
NC
686 abort:
687 {
688 int send_errno = errno;
689 unsigned char length = (unsigned char) strlen(where);
690 struct iovec failure[3] = {
691 {(void*)&send_errno, sizeof(send_errno)},
692 {&length, 1},
693 {(void*)where, length}
694 };
695 int got = writev(sock, failure, 3);
696 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
697 in the parent if we try to read from the socketpair after the
698 child has exited, even if there was data to read.
699 So sleep a bit to give the parent a fighting chance of
700 reading the data. */
701 sleep(2);
702 _exit((got == -1) ? errno : 0);
703 }
bf357333 704 /* End of child. */
2aa47728 705 }
41e4abd8 706 PL_dumper_fd = fd[0];
2aa47728
NC
707 close(fd[1]);
708 }
709#endif
710
ff0cee69
PP
711 /* We must account for everything. */
712
713 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
714 /* Do this now, because destroying ops can cause new SVs to be generated
715 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
716 PL_curcop to point to a valid op from which the filename structure
717 member is copied. */
718 PL_curcop = &PL_compiling;
3280af22 719 if (PL_main_root) {
4e380990
DM
720 /* ensure comppad/curpad to refer to main's pad */
721 if (CvPADLIST(PL_main_cv)) {
722 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
723 }
3280af22
NIS
724 op_free(PL_main_root);
725 PL_main_root = Nullop;
a0d0e21e 726 }
3280af22
NIS
727 PL_main_start = Nullop;
728 SvREFCNT_dec(PL_main_cv);
601f1833 729 PL_main_cv = NULL;
24d3c518 730 PL_dirty = TRUE;
ff0cee69 731
13621cfb
NIS
732 /* Tell PerlIO we are about to tear things apart in case
733 we have layers which are using resources that should
734 be cleaned up now.
735 */
736
737 PerlIO_destruct(aTHX);
738
3280af22 739 if (PL_sv_objcount) {
a0d0e21e
LW
740 /*
741 * Try to destruct global references. We do this first so that the
742 * destructors and destructees still exist. Some sv's might remain.
743 * Non-referenced objects are on their own.
744 */
a0d0e21e 745 sv_clean_objs();
bf9cdc68 746 PL_sv_objcount = 0;
a0de6cf5 747 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 748 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
749 }
750
5cd24f17 751 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 752 SvREFCNT_dec(PL_warnhook);
a0714e2c 753 PL_warnhook = NULL;
3280af22 754 SvREFCNT_dec(PL_diehook);
a0714e2c 755 PL_diehook = NULL;
5cd24f17 756
4b556e6c 757 /* call exit list functions */
3280af22 758 while (PL_exitlistlen-- > 0)
acfe0abc 759 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 760
3280af22 761 Safefree(PL_exitlist);
4b556e6c 762
1c4916e5
CB
763 PL_exitlist = NULL;
764 PL_exitlistlen = 0;
765
a0d0e21e 766 if (destruct_level == 0){
8990e307 767
a0d0e21e 768 DEBUG_P(debprofdump());
ac27b0f5 769
56a2bab7
NIS
770#if defined(PERLIO_LAYERS)
771 /* No more IO - including error messages ! */
772 PerlIO_cleanup(aTHX);
773#endif
774
a0d0e21e 775 /* The exit() function will do everything that needs doing. */
37038d91 776 return STATUS_EXIT;
a0d0e21e 777 }
5dd60ef7 778
551a8b83 779 /* jettison our possibly duplicated environment */
4b647fb0
DM
780 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
781 * so we certainly shouldn't free it here
782 */
2f42fcb0 783#ifndef PERL_MICRO
4b647fb0 784#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 785 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
786#ifdef USE_ITHREADS
787 /* only main thread can free environ[0] contents */
788 && PL_curinterp == aTHX
789#endif
790 )
791 {
551a8b83
JH
792 I32 i;
793
794 for (i = 0; environ[i]; i++)
4b420006 795 safesysfree(environ[i]);
0631ea03 796
4b420006
JH
797 /* Must use safesysfree() when working with environ. */
798 safesysfree(environ);
551a8b83
JH
799
800 environ = PL_origenviron;
801 }
802#endif
2f42fcb0 803#endif /* !PERL_MICRO */
551a8b83 804
804ffa60 805 /* reset so print() ends up where we expect */
a0714e2c 806 setdefout(NULL);
804ffa60 807
5f8cb046
DM
808#ifdef USE_ITHREADS
809 /* the syntax tree is shared between clones
810 * so op_free(PL_main_root) only ReREFCNT_dec's
811 * REGEXPs in the parent interpreter
812 * we need to manually ReREFCNT_dec for the clones
813 */
814 {
815 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 816 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
817
818 while (i) {
c4420975 819 SV * const resv = ary[--i];
35061a7e
DM
820
821 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 822 /* this is PL_reg_curpm, already freed
35061a7e
DM
823 * flag is set in regexec.c:S_regtry
824 */
825 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 826 }
1cc8b4c5
AB
827 else if(SvREPADTMP(resv)) {
828 SvREPADTMP_off(resv);
829 }
a560f29b
NC
830 else if(SvIOKp(resv)) {
831 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
832 ReREFCNT_dec(re);
833 }
834 }
835 }
836 SvREFCNT_dec(PL_regex_padav);
7d49f689 837 PL_regex_padav = NULL;
5f8cb046
DM
838 PL_regex_pad = NULL;
839#endif
840
081fc587
AB
841 SvREFCNT_dec((SV*) PL_stashcache);
842 PL_stashcache = NULL;
843
5f05dabc
PP
844 /* loosen bonds of global variables */
845
3280af22
NIS
846 if(PL_rsfp) {
847 (void)PerlIO_close(PL_rsfp);
848 PL_rsfp = Nullfp;
8ebc5c01
PP
849 }
850
851 /* Filters for program text */
3280af22 852 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 853 PL_rsfp_filters = NULL;
8ebc5c01
PP
854
855 /* switches */
3280af22
NIS
856 PL_preprocess = FALSE;
857 PL_minus_n = FALSE;
858 PL_minus_p = FALSE;
859 PL_minus_l = FALSE;
860 PL_minus_a = FALSE;
861 PL_minus_F = FALSE;
862 PL_doswitches = FALSE;
599cee73 863 PL_dowarn = G_WARN_OFF;
3280af22
NIS
864 PL_doextract = FALSE;
865 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
866 PL_unsafe = FALSE;
867
868 Safefree(PL_inplace);
bd61b366 869 PL_inplace = NULL;
a7cb1f99 870 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
871
872 if (PL_e_script) {
873 SvREFCNT_dec(PL_e_script);
a0714e2c 874 PL_e_script = NULL;
8ebc5c01
PP
875 }
876
bf9cdc68
RG
877 PL_perldb = 0;
878
8ebc5c01
PP
879 /* magical thingies */
880
7889fe52 881 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 882 PL_ofs_sv = NULL;
5f05dabc 883
7889fe52 884 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 885 PL_ors_sv = NULL;
8ebc5c01 886
3280af22 887 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 888 PL_rs = NULL;
dc92893f 889
d33b2eba
GS
890 PL_multiline = 0; /* $* */
891 Safefree(PL_osname); /* $^O */
bd61b366 892 PL_osname = NULL;
5f05dabc 893
3280af22 894 SvREFCNT_dec(PL_statname);
a0714e2c
SS
895 PL_statname = NULL;
896 PL_statgv = NULL;
5f05dabc 897
8ebc5c01
PP
898 /* defgv, aka *_ should be taken care of elsewhere */
899
8ebc5c01 900 /* clean up after study() */
3280af22 901 SvREFCNT_dec(PL_lastscream);
a0714e2c 902 PL_lastscream = NULL;
3280af22
NIS
903 Safefree(PL_screamfirst);
904 PL_screamfirst = 0;
905 Safefree(PL_screamnext);
906 PL_screamnext = 0;
8ebc5c01 907
7d5ea4e7
GS
908 /* float buffer */
909 Safefree(PL_efloatbuf);
bd61b366 910 PL_efloatbuf = NULL;
7d5ea4e7
GS
911 PL_efloatsize = 0;
912
8ebc5c01 913 /* startup and shutdown function lists */
3280af22 914 SvREFCNT_dec(PL_beginav);
5a837c8f 915 SvREFCNT_dec(PL_beginav_save);
3280af22 916 SvREFCNT_dec(PL_endav);
7d30b5c4 917 SvREFCNT_dec(PL_checkav);
ece599bd 918 SvREFCNT_dec(PL_checkav_save);
3280af22 919 SvREFCNT_dec(PL_initav);
7d49f689
NC
920 PL_beginav = NULL;
921 PL_beginav_save = NULL;
922 PL_endav = NULL;
923 PL_checkav = NULL;
924 PL_checkav_save = NULL;
925 PL_initav = NULL;
5618dfe8 926
8ebc5c01 927 /* shortcuts just get cleared */
a0714e2c
SS
928 PL_envgv = NULL;
929 PL_incgv = NULL;
930 PL_hintgv = NULL;
931 PL_errgv = NULL;
932 PL_argvgv = NULL;
933 PL_argvoutgv = NULL;
934 PL_stdingv = NULL;
935 PL_stderrgv = NULL;
936 PL_last_in_gv = NULL;
937 PL_replgv = NULL;
938 PL_DBgv = NULL;
939 PL_DBline = NULL;
940 PL_DBsub = NULL;
941 PL_DBsingle = NULL;
942 PL_DBtrace = NULL;
943 PL_DBsignal = NULL;
944 PL_DBassertion = NULL;
601f1833 945 PL_DBcv = NULL;
7d49f689 946 PL_dbargs = NULL;
5c284bb0 947 PL_debstash = NULL;
8ebc5c01 948
7a1c5554 949 SvREFCNT_dec(PL_argvout_stack);
7d49f689 950 PL_argvout_stack = NULL;
8ebc5c01 951
5c831c24 952 SvREFCNT_dec(PL_modglobal);
5c284bb0 953 PL_modglobal = NULL;
5c831c24 954 SvREFCNT_dec(PL_preambleav);
7d49f689 955 PL_preambleav = NULL;
5c831c24 956 SvREFCNT_dec(PL_subname);
a0714e2c 957 PL_subname = NULL;
5c831c24 958 SvREFCNT_dec(PL_linestr);
a0714e2c 959 PL_linestr = NULL;
ca0c25f6 960#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 961 SvREFCNT_dec(PL_pidstatus);
5c284bb0 962 PL_pidstatus = NULL;
ca0c25f6 963#endif
5c831c24 964 SvREFCNT_dec(PL_toptarget);
a0714e2c 965 PL_toptarget = NULL;
5c831c24 966 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
967 PL_bodytarget = NULL;
968 PL_formtarget = NULL;
5c831c24 969
d33b2eba 970 /* free locale stuff */
b9582b6a 971#ifdef USE_LOCALE_COLLATE
d33b2eba 972 Safefree(PL_collation_name);
bd61b366 973 PL_collation_name = NULL;
b9582b6a 974#endif
d33b2eba 975
b9582b6a 976#ifdef USE_LOCALE_NUMERIC
d33b2eba 977 Safefree(PL_numeric_name);
bd61b366 978 PL_numeric_name = NULL;
a453c169 979 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 980 PL_numeric_radix_sv = NULL;
b9582b6a 981#endif
d33b2eba 982
5c831c24
GS
983 /* clear utf8 character classes */
984 SvREFCNT_dec(PL_utf8_alnum);
985 SvREFCNT_dec(PL_utf8_alnumc);
986 SvREFCNT_dec(PL_utf8_ascii);
987 SvREFCNT_dec(PL_utf8_alpha);
988 SvREFCNT_dec(PL_utf8_space);
989 SvREFCNT_dec(PL_utf8_cntrl);
990 SvREFCNT_dec(PL_utf8_graph);
991 SvREFCNT_dec(PL_utf8_digit);
992 SvREFCNT_dec(PL_utf8_upper);
993 SvREFCNT_dec(PL_utf8_lower);
994 SvREFCNT_dec(PL_utf8_print);
995 SvREFCNT_dec(PL_utf8_punct);
996 SvREFCNT_dec(PL_utf8_xdigit);
997 SvREFCNT_dec(PL_utf8_mark);
998 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 999 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1000 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1001 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1002 SvREFCNT_dec(PL_utf8_idstart);
1003 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1004 PL_utf8_alnum = NULL;
1005 PL_utf8_alnumc = NULL;
1006 PL_utf8_ascii = NULL;
1007 PL_utf8_alpha = NULL;
1008 PL_utf8_space = NULL;
1009 PL_utf8_cntrl = NULL;
1010 PL_utf8_graph = NULL;
1011 PL_utf8_digit = NULL;
1012 PL_utf8_upper = NULL;
1013 PL_utf8_lower = NULL;
1014 PL_utf8_print = NULL;
1015 PL_utf8_punct = NULL;
1016 PL_utf8_xdigit = NULL;
1017 PL_utf8_mark = NULL;
1018 PL_utf8_toupper = NULL;
1019 PL_utf8_totitle = NULL;
1020 PL_utf8_tolower = NULL;
1021 PL_utf8_tofold = NULL;
1022 PL_utf8_idstart = NULL;
1023 PL_utf8_idcont = NULL;
5c831c24 1024
971a9dd3
GS
1025 if (!specialWARN(PL_compiling.cop_warnings))
1026 SvREFCNT_dec(PL_compiling.cop_warnings);
a0714e2c 1027 PL_compiling.cop_warnings = NULL;
ac27b0f5
NIS
1028 if (!specialCopIO(PL_compiling.cop_io))
1029 SvREFCNT_dec(PL_compiling.cop_io);
a0714e2c 1030 PL_compiling.cop_io = NULL;
05ec9bb3
NIS
1031 CopFILE_free(&PL_compiling);
1032 CopSTASH_free(&PL_compiling);
5c831c24 1033
a0d0e21e 1034 /* Prepare to destruct main symbol table. */
5f05dabc 1035
3280af22
NIS
1036 hv = PL_defstash;
1037 PL_defstash = 0;
a0d0e21e 1038 SvREFCNT_dec(hv);
5c831c24 1039 SvREFCNT_dec(PL_curstname);
a0714e2c 1040 PL_curstname = NULL;
a0d0e21e 1041
5a844595
GS
1042 /* clear queued errors */
1043 SvREFCNT_dec(PL_errors);
a0714e2c 1044 PL_errors = NULL;
5a844595 1045
a0d0e21e 1046 FREETMPS;
0453d815 1047 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1048 if (PL_scopestack_ix != 0)
9014280d 1049 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1050 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1051 (long)PL_scopestack_ix);
1052 if (PL_savestack_ix != 0)
9014280d 1053 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1054 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1055 (long)PL_savestack_ix);
1056 if (PL_tmps_floor != -1)
9014280d 1057 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1058 (long)PL_tmps_floor + 1);
a0d0e21e 1059 if (cxstack_ix != -1)
9014280d 1060 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1061 (long)cxstack_ix + 1);
a0d0e21e 1062 }
8990e307
LW
1063
1064 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1065 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1066 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1067
1068 /* the 2 is for PL_fdpid and PL_strtab */
1069 while (PL_sv_count > 2 && sv_clean_all())
1070 ;
1071
d33b2eba
GS
1072 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1073 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1074 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1075 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1076
d4777f27
GS
1077 AvREAL_off(PL_fdpid); /* no surviving entries */
1078 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1079 PL_fdpid = NULL;
d33b2eba 1080
6c644e78
GS
1081#ifdef HAVE_INTERP_INTERN
1082 sys_intern_clear();
1083#endif
1084
6e72f9df
PP
1085 /* Destruct the global string table. */
1086 {
1087 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1088 * so that sv_free() won't fail on them.
80459961
NC
1089 * Now that the global string table is using a single hunk of memory
1090 * for both HE and HEK, we either need to explicitly unshare it the
1091 * correct way, or actually free things here.
6e72f9df 1092 */
80459961
NC
1093 I32 riter = 0;
1094 const I32 max = HvMAX(PL_strtab);
c4420975 1095 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1096 HE *hent = array[0];
1097
6e72f9df 1098 for (;;) {
0453d815 1099 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1100 HE * const next = HeNEXT(hent);
9014280d 1101 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1102 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1103 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1104 Safefree(hent);
1105 hent = next;
6e72f9df
PP
1106 }
1107 if (!hent) {
1108 if (++riter > max)
1109 break;
1110 hent = array[riter];
1111 }
1112 }
80459961
NC
1113
1114 Safefree(array);
1115 HvARRAY(PL_strtab) = 0;
1116 HvTOTALKEYS(PL_strtab) = 0;
1117 HvFILL(PL_strtab) = 0;
6e72f9df 1118 }
3280af22 1119 SvREFCNT_dec(PL_strtab);
6e72f9df 1120
e652bb2f 1121#ifdef USE_ITHREADS
c21d1a0f 1122 /* free the pointer tables used for cloning */
a0739874 1123 ptr_table_free(PL_ptr_table);
bf9cdc68 1124 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1125#endif
a0739874 1126
d33b2eba
GS
1127 /* free special SVs */
1128
1129 SvREFCNT(&PL_sv_yes) = 0;
1130 sv_clear(&PL_sv_yes);
1131 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1132 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1133
1134 SvREFCNT(&PL_sv_no) = 0;
1135 sv_clear(&PL_sv_no);
1136 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1137 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1138
9f375a43
DM
1139 {
1140 int i;
1141 for (i=0; i<=2; i++) {
1142 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1143 sv_clear(PERL_DEBUG_PAD(i));
1144 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1145 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1146 }
1147 }
1148
0453d815 1149 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1150 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1151
eba0f806
DM
1152#ifdef DEBUG_LEAKING_SCALARS
1153 if (PL_sv_count != 0) {
1154 SV* sva;
1155 SV* sv;
1156 register SV* svend;
1157
1158 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1159 svend = &sva[SvREFCNT(sva)];
1160 for (sv = sva + 1; sv < svend; ++sv) {
1161 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1162 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1163 " flags=0x%"UVxf
fd0854ff
DM
1164 " refcnt=%"UVuf pTHX__FORMAT "\n"
1165 "\tallocated at %s:%d %s %s%s\n",
1166 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1167 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1168 sv->sv_debug_line,
1169 sv->sv_debug_inpad ? "for" : "by",
1170 sv->sv_debug_optype ?
1171 PL_op_name[sv->sv_debug_optype]: "(none)",
1172 sv->sv_debug_cloned ? " (cloned)" : ""
1173 );
2aa47728 1174#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1175 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1176#endif
eba0f806
DM
1177 }
1178 }
1179 }
1180 }
2aa47728
NC
1181#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1182 {
1183 int status;
1184 fd_set rset;
1185 /* Wait for up to 4 seconds for child to terminate.
1186 This seems to be the least effort way of timing out on reaping
1187 its exit status. */
1188 struct timeval waitfor = {4, 0};
41e4abd8 1189 int sock = PL_dumper_fd;
2aa47728
NC
1190
1191 shutdown(sock, 1);
1192 FD_ZERO(&rset);
1193 FD_SET(sock, &rset);
1194 select(sock + 1, &rset, NULL, NULL, &waitfor);
1195 waitpid(child, &status, WNOHANG);
1196 close(sock);
1197 }
1198#endif
eba0f806 1199#endif
bf9cdc68 1200 PL_sv_count = 0;
eba0f806
DM
1201
1202
56a2bab7 1203#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1204 /* No more IO - including error messages ! */
1205 PerlIO_cleanup(aTHX);
1206#endif
1207
9f4bd222 1208 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1209 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1210 for no arg - and will try and SvREFCNT_dec it.
1211 */
1212 SvREFCNT(&PL_sv_undef) = 0;
1213 SvREADONLY_off(&PL_sv_undef);
1214
3280af22 1215 Safefree(PL_origfilename);
bd61b366 1216 PL_origfilename = NULL;
3280af22 1217 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1218 PL_reg_start_tmp = (char**)NULL;
1219 PL_reg_start_tmpl = 0;
43c5f42d 1220 Safefree(PL_reg_curpm);
82ba1be6 1221 Safefree(PL_reg_poscache);
dd28f7bb 1222 free_tied_hv_pool();
3280af22 1223 Safefree(PL_op_mask);
cf36064f 1224 Safefree(PL_psig_ptr);
bf9cdc68 1225 PL_psig_ptr = (SV**)NULL;
cf36064f 1226 Safefree(PL_psig_name);
bf9cdc68 1227 PL_psig_name = (SV**)NULL;
2c2666fc 1228 Safefree(PL_bitcount);
bd61b366 1229 PL_bitcount = NULL;
ce08f86c 1230 Safefree(PL_psig_pend);
bf9cdc68 1231 PL_psig_pend = (int*)NULL;
a0714e2c 1232 PL_formfeed = NULL;
6e72f9df 1233 nuke_stacks();
bf9cdc68
RG
1234 PL_tainting = FALSE;
1235 PL_taint_warn = FALSE;
3280af22 1236 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1237 PL_debug = 0;
ac27b0f5 1238
a0d0e21e 1239 DEBUG_P(debprofdump());
d33b2eba 1240
e5dd39fc 1241#ifdef USE_REENTRANT_API
10bc17b6 1242 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1243#endif
1244
612f20c3
GS
1245 sv_free_arenas();
1246
fc36a67e
PP
1247 /* As the absolutely last thing, free the non-arena SV for mess() */
1248
3280af22 1249 if (PL_mess_sv) {
f350b448
NC
1250 /* we know that type == SVt_PVMG */
1251
9c63abab 1252 /* it could have accumulated taint magic */
f350b448
NC
1253 MAGIC* mg;
1254 MAGIC* moremagic;
1255 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1256 moremagic = mg->mg_moremagic;
1257 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1258 && mg->mg_len >= 0)
1259 Safefree(mg->mg_ptr);
1260 Safefree(mg);
9c63abab 1261 }
f350b448 1262
fc36a67e 1263 /* we know that type >= SVt_PV */
8bd4d4c5 1264 SvPV_free(PL_mess_sv);
3280af22
NIS
1265 Safefree(SvANY(PL_mess_sv));
1266 Safefree(PL_mess_sv);
a0714e2c 1267 PL_mess_sv = NULL;
fc36a67e 1268 }
37038d91 1269 return STATUS_EXIT;
79072805
LW
1270}
1271
954c1994
GS
1272/*
1273=for apidoc perl_free
1274
1275Releases a Perl interpreter. See L<perlembed>.
1276
1277=cut
1278*/
1279
79072805 1280void
0cb96387 1281perl_free(pTHXx)
79072805 1282{
acfe0abc 1283#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1284# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS
1285# ifdef NETWARE
1286 void *host = nw_internal_host;
1287# else
1288 void *host = w32_internal_host;
1289# endif
ce3e5b80 1290 PerlMem_free(aTHXx);
acfe0abc 1291# ifdef NETWARE
011f1a1a 1292 nw_delete_internal_host(host);
acfe0abc
GS
1293# else
1294 win32_delete_internal_host(host);
1295# endif
1c0ca838
GS
1296# else
1297 PerlMem_free(aTHXx);
1298# endif
acfe0abc
GS
1299#else
1300 PerlMem_free(aTHXx);
76e3520e 1301#endif
79072805
LW
1302}
1303
aebd1ac7
GA
1304#if defined(USE_5005THREADS) || defined(USE_ITHREADS)
1305/* provide destructors to clean up the thread key when libperl is unloaded */
1306#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1307
110d3f98 1308#if defined(__hpux) && __ux_version > 1020 && !defined(__GNUC__)
aebd1ac7
GA
1309#pragma fini "perl_fini"
1310#endif
1311
0dbb1585
AL
1312static void
1313#if defined(__GNUC__)
1314__attribute__((destructor))
aebd1ac7 1315#endif
de009b76 1316perl_fini(void)
aebd1ac7 1317{
27da23d5 1318 dVAR;
aebd1ac7
GA
1319 if (PL_curinterp)
1320 FREE_THREAD_KEY;
1321}
1322
1323#endif /* WIN32 */
1324#endif /* THREADS */
1325
4b556e6c 1326void
864dbfa3 1327Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1328{
97aff369 1329 dVAR;
3280af22
NIS
1330 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1331 PL_exitlist[PL_exitlistlen].fn = fn;
1332 PL_exitlist[PL_exitlistlen].ptr = ptr;
1333 ++PL_exitlistlen;
4b556e6c
JD
1334}
1335
56cf6df8
RGS
1336#ifdef HAS_PROCSELFEXE
1337/* This is a function so that we don't hold on to MAXPATHLEN
1338 bytes of stack longer than necessary
1339 */
1340STATIC void
e1ec3a88 1341S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1342{
1343 char buf[MAXPATHLEN];
1344 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1345
1346 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1347 includes a spurious NUL which will cause $^X to fail in system
1348 or backticks (this will prevent extensions from being built and
1349 many tests from working). readlink is not meant to add a NUL.
1350 Normal readlink works fine.
1351 */
1352 if (len > 0 && buf[len-1] == '\0') {
1353 len--;
1354 }
1355
1356 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1357 returning the text "unknown" from the readlink rather than the path
1358 to the executable (or returning an error from the readlink). Any valid
1359 path has a '/' in it somewhere, so use that to validate the result.
1360 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1361 */
1362 if (len > 0 && memchr(buf, '/', len)) {
1363 sv_setpvn(sv,buf,len);
1364 }
1365 else {
1366 sv_setpv(sv,arg0);
1367 }
1368}
1369#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1370
1371STATIC void
1372S_set_caret_X(pTHX) {
97aff369 1373 dVAR;
fafc274c 1374 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1375 if (tmpgv) {
1376#ifdef HAS_PROCSELFEXE
1377 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1378#else
1379#ifdef OS2
c69033f2 1380 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1381#else
c69033f2 1382 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1383#endif
1384#endif
1385 }
1386}
1387
954c1994
GS
1388/*
1389=for apidoc perl_parse
1390
1391Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1392
1393=cut
1394*/
1395
79072805 1396int
0cb96387 1397perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1398{
27da23d5 1399 dVAR;
6224f72b 1400 I32 oldscope;
6224f72b 1401 int ret;
db36c5a1 1402 dJMPENV;
8d063cd8 1403
9d4ba2ae
AL
1404 PERL_UNUSED_VAR(my_perl);
1405
a687059c
LW
1406#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1407#ifdef IAMSUID
1408#undef IAMSUID
cea2e8a9 1409 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1410setuid perl scripts securely.\n");
ae3f3efd 1411#endif /* IAMSUID */
a687059c
LW
1412#endif
1413
b0891165
JH
1414#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1415 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1416 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1417 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1418 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1419 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1420 if (!PL_rehash_seed_set)
1421 PL_rehash_seed = get_hash_seed();
b0891165 1422 {
9d4ba2ae 1423 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1424
1b6737cc
AL
1425 if (s && (atoi(s) == 1))
1426 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1427 }
1428#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1429
3280af22 1430 PL_origargc = argc;
e2975953 1431 PL_origargv = argv;
a0d0e21e 1432
a2722ac9
GA
1433 if (PL_origalen != 0) {
1434 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1435 }
1436 else {
3cb9023d
JH
1437 /* Set PL_origalen be the sum of the contiguous argv[]
1438 * elements plus the size of the env in case that it is
e9137a8e 1439 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1440 * as the maximum modifiable length of $0. In the worst case
1441 * the area we are able to modify is limited to the size of
43c32782 1442 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1443 * --jhi */
e1ec3a88 1444 const char *s = NULL;
54bfe034 1445 int i;
1b6737cc 1446 const UV mask =
7d8e7db3 1447 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1448 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1449 const UV aligned =
43c32782
JH
1450 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1451
1452 /* See if all the arguments are contiguous in memory. Note
1453 * that 'contiguous' is a loose term because some platforms
1454 * align the argv[] and the envp[]. If the arguments look
1455 * like non-aligned, assume that they are 'strictly' or
1456 * 'traditionally' contiguous. If the arguments look like
1457 * aligned, we just check that they are within aligned
1458 * PTRSIZE bytes. As long as no system has something bizarre
1459 * like the argv[] interleaved with some other data, we are
1460 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1461 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1462 while (*s) s++;
1463 for (i = 1; i < PL_origargc; i++) {
1464 if ((PL_origargv[i] == s + 1
43c32782 1465#ifdef OS2
c8941eeb 1466 || PL_origargv[i] == s + 2
43c32782 1467#endif
c8941eeb
JH
1468 )
1469 ||
1470 (aligned &&
1471 (PL_origargv[i] > s &&
1472 PL_origargv[i] <=
1473 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1474 )
1475 {
1476 s = PL_origargv[i];
1477 while (*s) s++;
1478 }
1479 else
1480 break;
54bfe034 1481 }
54bfe034 1482 }
3cb9023d 1483 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1484 if (s && PL_origenviron) {
43c32782
JH
1485 if ((PL_origenviron[0] == s + 1
1486#ifdef OS2
1487 || (PL_origenviron[0] == s + 9 && (s += 8))
1488#endif
1489 )
1490 ||
1491 (aligned &&
1492 (PL_origenviron[0] > s &&
1493 PL_origenviron[0] <=
1494 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1495 )
1496 {
1497#ifndef OS2
1498 s = PL_origenviron[0];
1499 while (*s) s++;
1500#endif
bd61b366 1501 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1502 /* Force copy of environment. */
1503 for (i = 1; PL_origenviron[i]; i++) {
1504 if (PL_origenviron[i] == s + 1
1505 ||
1506 (aligned &&
1507 (PL_origenviron[i] > s &&
1508 PL_origenviron[i] <=
1509 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1510 )
1511 {
1512 s = PL_origenviron[i];
1513 while (*s) s++;
1514 }
1515 else
1516 break;
54bfe034 1517 }
43c32782 1518 }
54bfe034 1519 }
2d2af554 1520 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1521 }
1522
3280af22 1523 if (PL_do_undump) {
a0d0e21e
LW
1524
1525 /* Come here if running an undumped a.out. */
1526
3280af22
NIS
1527 PL_origfilename = savepv(argv[0]);
1528 PL_do_undump = FALSE;
a0d0e21e 1529 cxstack_ix = -1; /* start label stack again */
748a9306 1530 init_ids();
b7975bdd
NC
1531 assert (!PL_tainted);
1532 TAINT;
1533 S_set_caret_X(aTHX);
1534 TAINT_NOT;
a0d0e21e
LW
1535 init_postdump_symbols(argc,argv,env);
1536 return 0;
1537 }
1538
3280af22 1539 if (PL_main_root) {
3280af22
NIS
1540 op_free(PL_main_root);
1541 PL_main_root = Nullop;
ff0cee69 1542 }
3280af22
NIS
1543 PL_main_start = Nullop;
1544 SvREFCNT_dec(PL_main_cv);
601f1833 1545 PL_main_cv = NULL;
79072805 1546
3280af22
NIS
1547 time(&PL_basetime);
1548 oldscope = PL_scopestack_ix;
599cee73 1549 PL_dowarn = G_WARN_OFF;
f86702cc 1550
14dd3ad8 1551 JMPENV_PUSH(ret);
6224f72b 1552 switch (ret) {
312caa8e 1553 case 0:
14dd3ad8 1554 parse_body(env,xsinit);
7d30b5c4
GS
1555 if (PL_checkav)
1556 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1557 ret = 0;
1558 break;
6224f72b
GS
1559 case 1:
1560 STATUS_ALL_FAILURE;
1561 /* FALL THROUGH */
1562 case 2:
1563 /* my_exit() was called */
3280af22 1564 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1565 LEAVE;
1566 FREETMPS;
3280af22 1567 PL_curstash = PL_defstash;
7d30b5c4
GS
1568 if (PL_checkav)
1569 call_list(oldscope, PL_checkav);
37038d91 1570 ret = STATUS_EXIT;
14dd3ad8 1571 break;
6224f72b 1572 case 3:
bf49b057 1573 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1574 ret = 1;
1575 break;
6224f72b 1576 }
14dd3ad8
GS
1577 JMPENV_POP;
1578 return ret;
1579}
1580
312caa8e 1581STATIC void *
14dd3ad8 1582S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1583{
27da23d5 1584 dVAR;
312caa8e 1585 int argc = PL_origargc;
8f42b153 1586 char **argv = PL_origargv;
e1ec3a88 1587 const char *scriptname = NULL;
312caa8e 1588 VOL bool dosearch = FALSE;
e1ec3a88 1589 const char *validarg = "";
312caa8e
CS
1590 register SV *sv;
1591 register char *s;
bd61b366 1592 const char *cddir = NULL;
ab019eaa 1593#ifdef USE_SITECUSTOMIZE
20ef40cf 1594 bool minus_f = FALSE;
ab019eaa 1595#endif
312caa8e 1596
3280af22 1597 sv_setpvn(PL_linestr,"",0);
396482e1 1598 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1599 SAVEFREESV(sv);
1600 init_main_stash();
54310121 1601
6224f72b
GS
1602 for (argc--,argv++; argc > 0; argc--,argv++) {
1603 if (argv[0][0] != '-' || !argv[0][1])
1604 break;
1605#ifdef DOSUID
1606 if (*validarg)
1607 validarg = " PHOOEY ";
1608 else
1609 validarg = argv[0];
ae3f3efd
PS
1610 /*
1611 * Can we rely on the kernel to start scripts with argv[1] set to
1612 * contain all #! line switches (the whole line)? (argv[0] is set to
1613 * the interpreter name, argv[2] to the script name; argv[3] and
1614 * above may contain other arguments.)
1615 */
13281fa4 1616#endif
6224f72b
GS
1617 s = argv[0]+1;
1618 reswitch:
1619 switch (*s) {
729a02f2 1620 case 'C':
1d5472a9
GS
1621#ifndef PERL_STRICT_CR
1622 case '\r':
1623#endif
6224f72b
GS
1624 case ' ':
1625 case '0':
1626 case 'F':
1627 case 'a':
1628 case 'c':
1629 case 'd':
1630 case 'D':
1631 case 'h':
1632 case 'i':
1633 case 'l':
1634 case 'M':
1635 case 'm':
1636 case 'n':
1637 case 'p':
1638 case 's':
1639 case 'u':
1640 case 'U':
1641 case 'v':
599cee73
PM
1642 case 'W':
1643 case 'X':
6224f72b 1644 case 'w':
06492da6 1645 case 'A':
a52eba0e 1646 if ((s = moreswitches(s, -1)))
6224f72b
GS
1647 goto reswitch;
1648 break;
33b78306 1649
1dbad523 1650 case 't':
22f7c9c9 1651 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1652 if( !PL_tainting ) {
1653 PL_taint_warn = TRUE;
1654 PL_tainting = TRUE;
1655 }
1656 s++;
1657 goto reswitch;
6224f72b 1658 case 'T':
22f7c9c9 1659 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1660 PL_tainting = TRUE;
317ea90d 1661 PL_taint_warn = FALSE;
6224f72b
GS
1662 s++;
1663 goto reswitch;
f86702cc 1664
bc9b29db
RH
1665 case 'E':
1666 PL_minus_E = TRUE;
1667 /* FALL THROUGH */
6224f72b 1668 case 'e':
bf4acbe4
GS
1669#ifdef MACOS_TRADITIONAL
1670 /* ignore -e for Dev:Pseudo argument */
1671 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1672 break;
bf4acbe4 1673#endif
a52eba0e 1674 forbid_setid('e', -1);
3280af22 1675 if (!PL_e_script) {
396482e1 1676 PL_e_script = newSVpvs("");
0cb96387 1677 filter_add(read_e_script, NULL);
6224f72b
GS
1678 }
1679 if (*++s)
3280af22 1680 sv_catpv(PL_e_script, s);
6224f72b 1681 else if (argv[1]) {
3280af22 1682 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1683 argc--,argv++;
1684 }
1685 else
bc9b29db 1686 Perl_croak(aTHX_ "No code specified for -%c", *s);
396482e1 1687 sv_catpvs(PL_e_script, "\n");
6224f72b 1688 break;
afe37c7d 1689
20ef40cf 1690 case 'f':
f5542d3a 1691#ifdef USE_SITECUSTOMIZE
20ef40cf 1692 minus_f = TRUE;
f5542d3a 1693#endif
20ef40cf
GA
1694 s++;
1695 goto reswitch;
1696
6224f72b 1697 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1698 forbid_setid('I', -1);
bd61b366 1699 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1700 argc--,argv++;
1701 }
6224f72b 1702 if (s && *s) {
0df16ed7 1703 STRLEN len = strlen(s);
aec46f14 1704 const char * const p = savepvn(s, len);
88fe16b2 1705 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1706 sv_catpvs(sv, "-I");
0df16ed7 1707 sv_catpvn(sv, p, len);
396482e1 1708 sv_catpvs(sv, " ");
6224f72b 1709 Safefree(p);
0df16ed7
GS
1710 }
1711 else
a67e862a 1712 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1713 break;
1714 case 'P':
a52eba0e 1715 forbid_setid('P', -1);
3280af22 1716 PL_preprocess = TRUE;
6224f72b
GS
1717 s++;
1718 goto reswitch;
1719 case 'S':
a52eba0e 1720 forbid_setid('S', -1);
6224f72b
GS
1721 dosearch = TRUE;
1722 s++;
1723 goto reswitch;
1724 case 'V':
7edfd0ef
NC
1725 {
1726 SV *opts_prog;
1727
1728 if (!PL_preambleav)
1729 PL_preambleav = newAV();
1730 av_push(PL_preambleav,
396482e1 1731 newSVpvs("use Config;"));
7edfd0ef
NC
1732 if (*++s != ':') {
1733 STRLEN opts;
1734
396482e1 1735 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1736#ifdef VMS
396482e1 1737 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1738#else
396482e1 1739 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1740#endif
7edfd0ef 1741 opts = SvCUR(opts_prog);
efcaa95b 1742
9cd7d3f2 1743 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1744# ifdef DEBUGGING
e2e4dbf1 1745 " DEBUGGING"
6224f72b 1746# endif
4f185743
NC
1747# ifdef DEBUG_LEAKING_SCALARS
1748 " DEBUG_LEAKING_SCALARS"
1749# endif
85e1fcb9 1750# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1751 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1752# endif
1753# ifdef FAKE_THREADS
e2e4dbf1 1754 " FAKE_THREADS"
85e1fcb9 1755# endif
6224f72b 1756# ifdef MULTIPLICITY
e2e4dbf1 1757 " MULTIPLICITY"
6224f72b 1758# endif
85e1fcb9 1759# ifdef MYMALLOC
e2e4dbf1 1760 " MYMALLOC"
85e1fcb9 1761# endif
3bcf5ed8
SP
1762# ifdef NO_MATHOMS
1763 " NO_MATHOMS"
1764# endif
85e1fcb9 1765# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1766 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1767# endif
1768# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1769 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1770# endif
1771# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1772 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1773# endif
1774# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1775 " PERL_IMPLICIT_SYS"
85e1fcb9
SH
1776# endif
1777# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1778 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1779# endif
1780# ifdef PERL_NEED_APPCTX
e2e4dbf1 1781 " PERL_NEED_APPCTX"
85e1fcb9
SH
1782# endif
1783# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1784 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1785# endif
1786# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1787 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1788# endif
9c0a4d5d
DM
1789# ifdef PERL_TRACK_MEMPOOL
1790 " PERL_TRACK_MEMPOOL"
1791# endif
417cd4a8
SP
1792# ifdef PERL_USE_SAFE_PUTENV
1793 " PERL_USE_SAFE_PUTENV"
1794# endif
ca0c25f6
NC
1795#ifdef PERL_USES_PL_PIDSTATUS
1796 " PERL_USES_PL_PIDSTATUS"
1797#endif
85e1fcb9 1798# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1799 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1800# endif
1801# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1802 " THREADS_HAVE_PIDS"
85e1fcb9 1803# endif
4d1ff10f 1804# ifdef USE_5005THREADS
e2e4dbf1 1805 " USE_5005THREADS"
b363f7ed 1806# endif
85e1fcb9 1807# ifdef USE_64_BIT_ALL
e2e4dbf1 1808 " USE_64_BIT_ALL"
ac5e8965 1809# endif
10cc9d2a 1810# ifdef USE_64_BIT_INT
e2e4dbf1 1811 " USE_64_BIT_INT"
10cc9d2a 1812# endif
85e1fcb9 1813# ifdef USE_ITHREADS
e2e4dbf1 1814 " USE_ITHREADS"
85e1fcb9
SH
1815# endif
1816# ifdef USE_LARGE_FILES
e2e4dbf1 1817 " USE_LARGE_FILES"
ac5e8965
JH
1818# endif
1819# ifdef USE_LONG_DOUBLE
e2e4dbf1 1820 " USE_LONG_DOUBLE"
ac5e8965 1821# endif
85e1fcb9 1822# ifdef USE_PERLIO
e2e4dbf1 1823 " USE_PERLIO"
53430762 1824# endif
85e1fcb9 1825# ifdef USE_REENTRANT_API
e2e4dbf1 1826 " USE_REENTRANT_API"
85e1fcb9
SH
1827# endif
1828# ifdef USE_SFIO
e2e4dbf1 1829 " USE_SFIO"
ac5e8965 1830# endif
20ef40cf 1831# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1832 " USE_SITECUSTOMIZE"
20ef40cf 1833# endif
85e1fcb9 1834# ifdef USE_SOCKS
e2e4dbf1 1835 " USE_SOCKS"
b363f7ed 1836# endif
e2e4dbf1 1837 );
efcaa95b 1838
7edfd0ef
NC
1839 while (SvCUR(opts_prog) > opts+76) {
1840 /* find last space after "options: " and before col 76
1841 */
efcaa95b 1842
7edfd0ef 1843 const char *space;
c4420975 1844 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1845 const char c = pv[opts+76];
1846 pv[opts+76] = '\0';
1847 space = strrchr(pv+opts+26, ' ');
1848 pv[opts+76] = c;
1849 if (!space) break; /* "Can't happen" */
efcaa95b 1850
7edfd0ef 1851 /* break the line before that space */
efcaa95b 1852
7edfd0ef 1853 opts = space - pv;
89529cee 1854 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1855 STR_WITH_LEN("\\n "));
7edfd0ef 1856 }
efcaa95b 1857
396482e1 1858 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1859
6224f72b 1860#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1861 if (LOCAL_PATCH_COUNT > 0) {
1862 int i;
396482e1 1863 sv_catpvs(opts_prog,
7edfd0ef
NC
1864 "\" Locally applied patches:\\n\",");
1865 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1866 if (PL_localpatches[i])
1867 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1868 0, PL_localpatches[i], 0);
1869 }
6224f72b 1870 }
6224f72b 1871#endif
7edfd0ef
NC
1872 Perl_sv_catpvf(aTHX_ opts_prog,
1873 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1874#ifdef __DATE__
1875# ifdef __TIME__
7edfd0ef
NC
1876 Perl_sv_catpvf(aTHX_ opts_prog,
1877 ",\" Compiled at %s %s\\n\"",__DATE__,
1878 __TIME__);
6224f72b 1879# else
7edfd0ef
NC
1880 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1881 __DATE__);
6224f72b
GS
1882# endif
1883#endif
396482e1 1884 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1885 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1886 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1887#ifdef __CYGWIN__
396482e1 1888 sv_catpvs(opts_prog,
7edfd0ef 1889 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1890#endif
396482e1 1891 sv_catpvs(opts_prog,
7edfd0ef
NC
1892 "print \" \\%ENV:\\n @env\\n\" if @env;"
1893 "print \" \\@INC:\\n @INC\\n\";");
1894 }
1895 else {
1896 ++s;
1897 opts_prog = Perl_newSVpvf(aTHX_
1898 "Config::config_vars(qw%c%s%c)",
1899 0, s, 0);
1900 s += strlen(s);
1901 }
1902 av_push(PL_preambleav, opts_prog);
1903 /* don't look for script or read stdin */
1904 scriptname = BIT_BUCKET;
1905 goto reswitch;
6224f72b 1906 }
6224f72b 1907 case 'x':
3280af22 1908 PL_doextract = TRUE;
6224f72b
GS
1909 s++;
1910 if (*s)
f4c556ac 1911 cddir = s;
6224f72b
GS
1912 break;
1913 case 0:
1914 break;
1915 case '-':
1916 if (!*++s || isSPACE(*s)) {
1917 argc--,argv++;
1918 goto switch_end;
1919 }
1920 /* catch use of gnu style long options */
1921 if (strEQ(s, "version")) {
dd374669 1922 s = (char *)"v";
6224f72b
GS
1923 goto reswitch;
1924 }
1925 if (strEQ(s, "help")) {
dd374669 1926 s = (char *)"h";
6224f72b
GS
1927 goto reswitch;
1928 }
1929 s--;
1930 /* FALL THROUGH */
1931 default:
cea2e8a9 1932 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1933 }
1934 }
6224f72b 1935 switch_end:
54310121 1936
f675dbe5
CB
1937 if (
1938#ifndef SECURE_INTERNAL_GETENV
1939 !PL_tainting &&
1940#endif
cf756827 1941 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1942 {
e1ec3a88 1943 const char *popt = s;
74288ac8
GS
1944 while (isSPACE(*s))
1945 s++;
317ea90d 1946 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1947 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1948 PL_tainting = TRUE;
317ea90d
MS
1949 PL_taint_warn = FALSE;
1950 }
74288ac8 1951 else {
bd61b366 1952 char *popt_copy = NULL;
74288ac8 1953 while (s && *s) {
4ea8f8fb 1954 char *d;
74288ac8
GS
1955 while (isSPACE(*s))
1956 s++;
1957 if (*s == '-') {
1958 s++;
1959 if (isSPACE(*s))
1960 continue;
1961 }
4ea8f8fb 1962 d = s;
74288ac8
GS
1963 if (!*s)
1964 break;
e4af53b0 1965 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 1966 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1967 while (++s && *s) {
1968 if (isSPACE(*s)) {
cf756827
GS
1969 if (!popt_copy) {
1970 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1971 s = popt_copy + (s - popt);
1972 d = popt_copy + (d - popt);
1973 }
4ea8f8fb
MS
1974 *s++ = '\0';
1975 break;
1976 }
1977 }
1c4db469 1978 if (*d == 't') {
317ea90d
MS
1979 if( !PL_tainting ) {
1980 PL_taint_warn = TRUE;
1981 PL_tainting = TRUE;
1982 }
1c4db469 1983 } else {
a52eba0e 1984 moreswitches(d, -1);
1c4db469 1985 }
6224f72b 1986 }
6224f72b
GS
1987 }
1988 }
a0d0e21e 1989
20ef40cf
GA
1990#ifdef USE_SITECUSTOMIZE
1991 if (!minus_f) {
1992 if (!PL_preambleav)
1993 PL_preambleav = newAV();
1994 av_unshift(PL_preambleav, 1);
1995 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1996 }
1997#endif
1998
317ea90d
MS
1999 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
2000 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
2001 }
2002
6224f72b
GS
2003 if (!scriptname)
2004 scriptname = argv[0];
3280af22 2005 if (PL_e_script) {
6224f72b
GS
2006 argc++,argv--;
2007 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2008 }
bd61b366 2009 else if (scriptname == NULL) {
6224f72b
GS
2010#ifdef MSDOS
2011 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
a8e48fe2 2012 moreswitches("h", -1);
6224f72b
GS
2013#endif
2014 scriptname = "-";
2015 }
2016
b7975bdd
NC
2017 /* Set $^X early so that it can be used for relocatable paths in @INC */
2018 assert (!PL_tainted);
2019 TAINT;
2020 S_set_caret_X(aTHX);
2021 TAINT_NOT;
6224f72b
GS
2022 init_perllib();
2023
a52eba0e
NC
2024 {
2025 int suidscript;
2026 const int fdscript
2027 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2028
a52eba0e 2029 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2030
64ca3a65 2031#ifndef PERL_MICRO
a52eba0e
NC
2032# if defined(SIGCHLD) || defined(SIGCLD)
2033 {
2034# ifndef SIGCHLD
2035# define SIGCHLD SIGCLD
2036# endif
2037 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2038 if (sigstate == (Sighandler_t) SIG_IGN) {
2039 if (ckWARN(WARN_SIGNAL))
2040 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2041 "Can't ignore signal CHLD, forcing to default");
2042 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2043 }
0b5b802d 2044 }
a52eba0e 2045# endif
64ca3a65 2046#endif
0b5b802d 2047
a52eba0e 2048 if (PL_doextract
bf4acbe4 2049#ifdef MACOS_TRADITIONAL
a52eba0e 2050 || gMacPerl_AlwaysExtract
bf4acbe4 2051#endif
a52eba0e
NC
2052 ) {
2053 find_beginning(suidscript);
2054 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2055 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2056 }
f4c556ac 2057 }
6224f72b 2058
561b68a9 2059 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2060 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2061 CvUNIQUE_on(PL_compcv);
2062
dd2155a4 2063 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 2064#ifdef USE_5005THREADS
533c011a 2065 CvOWNER(PL_compcv) = 0;
a02a5408 2066 Newx(CvMUTEXP(PL_compcv), 1, perl_mutex);
533c011a 2067 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 2068#endif /* USE_5005THREADS */
6224f72b 2069
0c4f7ff0 2070 boot_core_PerlIO();
6224f72b 2071 boot_core_UNIVERSAL();
09bef843 2072 boot_core_xsutils();
6224f72b
GS
2073
2074 if (xsinit)
acfe0abc 2075 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2076#ifndef PERL_MICRO
d0d72822 2077#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2078 init_os_extras();
6224f72b 2079#endif
64ca3a65 2080#endif
6224f72b 2081
29209bc5 2082#ifdef USE_SOCKS
1b9c9cf5
DH
2083# ifdef HAS_SOCKS5_INIT
2084 socks5_init(argv[0]);
2085# else
29209bc5 2086 SOCKSinit(argv[0]);
1b9c9cf5 2087# endif
ac27b0f5 2088#endif
29209bc5 2089
6224f72b
GS
2090 init_predump_symbols();
2091 /* init_postdump_symbols not currently designed to be called */
2092 /* more than once (ENV isn't cleared first, for example) */
2093 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2094 if (!PL_do_undump)
6224f72b
GS
2095 init_postdump_symbols(argc,argv,env);
2096
27da23d5
JH
2097 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2098 * or explicitly in some platforms.
085a54d9 2099 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2100 * look like the user wants to use UTF-8. */
a0fd4948 2101#if defined(__SYMBIAN32__)
27da23d5
JH
2102 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2103#endif
06e66572
JH
2104 if (PL_unicode) {
2105 /* Requires init_predump_symbols(). */
a05d7ebb 2106 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2107 IO* io;
2108 PerlIO* fp;
2109 SV* sv;
2110
a05d7ebb 2111 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2112 * and the default open disciplines. */
a05d7ebb
JH
2113 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2114 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2115 (fp = IoIFP(io)))
2116 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2117 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2118 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2119 (fp = IoOFP(io)))
2120 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2121 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2122 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2123 (fp = IoOFP(io)))
2124 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2125 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2126 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2127 SVt_PV)))) {
a05d7ebb
JH
2128 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2129 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2130 if (in) {
2131 if (out)
2132 sv_setpvn(sv, ":utf8\0:utf8", 11);
2133 else
2134 sv_setpvn(sv, ":utf8\0", 6);
2135 }
2136 else if (out)
2137 sv_setpvn(sv, "\0:utf8", 6);
2138 SvSETMAGIC(sv);
2139 }
b310b053
JH
2140 }
2141 }
2142
4ffa73a3
JH
2143 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2144 if (strEQ(s, "unsafe"))
2145 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2146 else if (strEQ(s, "safe"))
2147 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2148 else
2149 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2150 }
2151
6224f72b
GS
2152 init_lexer();
2153
2154 /* now parse the script */
2155
93189314 2156 SETERRNO(0,SS_NORMAL);
3280af22 2157 PL_error_count = 0;
bf4acbe4
GS
2158#ifdef MACOS_TRADITIONAL
2159 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2160 if (PL_minus_c)
2161 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2162 else {
2163 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2164 MacPerl_MPWFileName(PL_origfilename));
2165 }
2166 }
2167#else
3280af22
NIS
2168 if (yyparse() || PL_error_count) {
2169 if (PL_minus_c)
cea2e8a9 2170 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2171 else {
cea2e8a9 2172 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2173 PL_origfilename);
6224f72b
GS
2174 }
2175 }
bf4acbe4 2176#endif
57843af0 2177 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2178 PL_curstash = PL_defstash;
2179 PL_preprocess = FALSE;
2180 if (PL_e_script) {
2181 SvREFCNT_dec(PL_e_script);
a0714e2c 2182 PL_e_script = NULL;
6224f72b
GS
2183 }
2184
3280af22 2185 if (PL_do_undump)
6224f72b
GS
2186 my_unexec();
2187
57843af0
GS
2188 if (isWARN_ONCE) {
2189 SAVECOPFILE(PL_curcop);
2190 SAVECOPLINE(PL_curcop);
3280af22 2191 gv_check(PL_defstash);
57843af0 2192 }
6224f72b
GS
2193
2194 LEAVE;
2195 FREETMPS;
2196
2197#ifdef MYMALLOC
2198 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2199 dump_mstats("after compilation:");
2200#endif
2201
2202 ENTER;
3280af22 2203 PL_restartop = 0;
312caa8e 2204 return NULL;
6224f72b
GS
2205}
2206
954c1994
GS
2207/*
2208=for apidoc perl_run
2209
2210Tells a Perl interpreter to run. See L<perlembed>.
2211
2212=cut
2213*/
2214
6224f72b 2215int
0cb96387 2216perl_run(pTHXx)
6224f72b 2217{
97aff369 2218 dVAR;
6224f72b 2219 I32 oldscope;
14dd3ad8 2220 int ret = 0;
db36c5a1 2221 dJMPENV;
6224f72b 2222
9d4ba2ae
AL
2223 PERL_UNUSED_ARG(my_perl);
2224
3280af22 2225 oldscope = PL_scopestack_ix;
96e176bf
CL
2226#ifdef VMS
2227 VMSISH_HUSHED = 0;
2228#endif
6224f72b 2229
14dd3ad8 2230 JMPENV_PUSH(ret);
6224f72b
GS
2231 switch (ret) {
2232 case 1:
2233 cxstack_ix = -1; /* start context stack again */
312caa8e 2234 goto redo_body;
14dd3ad8 2235 case 0: /* normal completion */
14dd3ad8
GS
2236 redo_body:
2237 run_body(oldscope);
14dd3ad8
GS
2238 /* FALL THROUGH */
2239 case 2: /* my_exit() */
3280af22 2240 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2241 LEAVE;
2242 FREETMPS;
3280af22 2243 PL_curstash = PL_defstash;
3a1ee7e8 2244 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2245 PL_endav && !PL_minus_c)
2246 call_list(oldscope, PL_endav);
6224f72b
GS
2247#ifdef MYMALLOC
2248 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2249 dump_mstats("after execution: ");
2250#endif
37038d91 2251 ret = STATUS_EXIT;
14dd3ad8 2252 break;
6224f72b 2253 case 3:
312caa8e
CS
2254 if (PL_restartop) {
2255 POPSTACK_TO(PL_mainstack);
2256 goto redo_body;
6224f72b 2257 }
bf49b057 2258 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2259 FREETMPS;
14dd3ad8
GS
2260 ret = 1;
2261 break;
6224f72b
GS
2262 }
2263
14dd3ad8
GS
2264 JMPENV_POP;
2265 return ret;
312caa8e
CS
2266}
2267
14dd3ad8 2268
dd374669 2269STATIC void
14dd3ad8
GS
2270S_run_body(pTHX_ I32 oldscope)
2271{
97aff369 2272 dVAR;
6224f72b 2273 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2274 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2275
3280af22 2276 if (!PL_restartop) {
6224f72b 2277 DEBUG_x(dump_all());
cf2782cd 2278#ifdef DEBUGGING
ecae49c0
NC
2279 if (!DEBUG_q_TEST)
2280 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2281#endif
b900a521
JH
2282 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2283 PTR2UV(thr)));
6224f72b 2284
3280af22 2285 if (PL_minus_c) {
bf4acbe4 2286#ifdef MACOS_TRADITIONAL
e69a2255
JH
2287 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2288 (gMacPerl_ErrorFormat ? "# " : ""),
2289 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2290#else
bf49b057 2291 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2292#endif
6224f72b
GS
2293 my_exit(0);
2294 }
3280af22 2295 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2296 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2297 if (PL_initav)
2298 call_list(oldscope, PL_initav);
6224f72b
GS
2299 }
2300
2301 /* do it */
2302
3280af22 2303 if (PL_restartop) {
533c011a 2304 PL_op = PL_restartop;
3280af22 2305 PL_restartop = 0;
cea2e8a9 2306 CALLRUNOPS(aTHX);
6224f72b 2307 }
3280af22
NIS
2308 else if (PL_main_start) {
2309 CvDEPTH(PL_main_cv) = 1;
533c011a 2310 PL_op = PL_main_start;
cea2e8a9 2311 CALLRUNOPS(aTHX);
6224f72b 2312 }
f6b3007c
JH
2313 my_exit(0);
2314 /* NOTREACHED */
6224f72b
GS
2315}
2316
954c1994 2317/*
ccfc67b7
JH
2318=head1 SV Manipulation Functions
2319
954c1994
GS
2320=for apidoc p||get_sv
2321
2322Returns the SV of the specified Perl scalar. If C<create> is set and the
2323Perl variable does not exist then it will be created. If C<create> is not
2324set and the variable does not exist then NULL is returned.
2325
2326=cut
2327*/
2328
6224f72b 2329SV*
864dbfa3 2330Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2331{
2332 GV *gv;
4d1ff10f 2333#ifdef USE_5005THREADS
6224f72b
GS
2334 if (name[1] == '\0' && !isALPHA(name[0])) {
2335 PADOFFSET tmp = find_threadsv(name);
411caa50 2336 if (tmp != NOT_IN_PAD)
6224f72b 2337 return THREADSV(tmp);
6224f72b 2338 }
4d1ff10f 2339#endif /* USE_5005THREADS */
6224f72b
GS
2340 gv = gv_fetchpv(name, create, SVt_PV);
2341 if (gv)
2342 return GvSV(gv);
a0714e2c 2343 return NULL;
6224f72b
GS
2344}
2345
954c1994 2346/*
ccfc67b7
JH
2347=head1 Array Manipulation Functions
2348
954c1994
GS
2349=for apidoc p||get_av
2350
2351Returns the AV of the specified Perl array. If C<create> is set and the
2352Perl variable does not exist then it will be created. If C<create> is not
2353set and the variable does not exist then NULL is returned.
2354
2355=cut
2356*/
2357
6224f72b 2358AV*
864dbfa3 2359Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2360{
c4420975 2361 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2362 if (create)
2363 return GvAVn(gv);
2364 if (gv)
2365 return GvAV(gv);
7d49f689 2366 return NULL;
6224f72b
GS
2367}
2368
954c1994 2369/*
ccfc67b7
JH
2370=head1 Hash Manipulation Functions
2371
954c1994
GS
2372=for apidoc p||get_hv
2373
2374Returns the HV of the specified Perl hash. If C<create> is set and the
2375Perl variable does not exist then it will be created. If C<create> is not
2376set and the variable does not exist then NULL is returned.
2377
2378=cut
2379*/
2380
6224f72b 2381HV*
864dbfa3 2382Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2383{
890ce7af 2384 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2385 if (create)
2386 return GvHVn(gv);
2387 if (gv)
2388 return GvHV(gv);
5c284bb0 2389 return NULL;
a0d0e21e
LW
2390}
2391
954c1994 2392/*
ccfc67b7
JH
2393=head1 CV Manipulation Functions
2394
954c1994
GS
2395=for apidoc p||get_cv
2396
2397Returns the CV of the specified Perl subroutine. If C<create> is set and
2398the Perl subroutine does not exist then it will be declared (which has the
2399same effect as saying C<sub name;>). If C<create> is not set and the
2400subroutine does not exist then NULL is returned.
2401
2402=cut
2403*/
2404
a0d0e21e 2405CV*
864dbfa3 2406Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2407{
c4420975 2408 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2409 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2410 /* XXX this is probably not what they think they're getting.
2411 * It has the same effect as "sub name;", i.e. just a forward
2412 * declaration! */
8ebc5c01 2413 if (create && !GvCVu(gv))
774d564b 2414 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2415 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 2416 Nullop,
a0d0e21e
LW
2417 Nullop);
2418 if (gv)
8ebc5c01 2419 return GvCVu(gv);
601f1833 2420 return NULL;
a0d0e21e
LW
2421}
2422
79072805
LW
2423/* Be sure to refetch the stack pointer after calling these routines. */
2424
954c1994 2425/*
ccfc67b7
JH
2426
2427=head1 Callback Functions
2428
954c1994
GS
2429=for apidoc p||call_argv
2430
2431Performs a callback to the specified Perl sub. See L<perlcall>.
2432
2433=cut
2434*/
2435
a0d0e21e 2436I32
8f42b153 2437Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2438
8ac85365
NIS
2439 /* See G_* flags in cop.h */
2440 /* null terminated arg list */
8990e307 2441{
97aff369 2442 dVAR;
a0d0e21e 2443 dSP;
8990e307 2444
924508f0 2445 PUSHMARK(SP);
a0d0e21e 2446 if (argv) {
8990e307 2447 while (*argv) {
a0d0e21e 2448 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2449 argv++;
2450 }
a0d0e21e 2451 PUTBACK;
8990e307 2452 }
864dbfa3 2453 return call_pv(sub_name, flags);
8990e307
LW
2454}
2455
954c1994
GS
2456/*
2457=for apidoc p||call_pv
2458
2459Performs a callback to the specified Perl sub. See L<perlcall>.
2460
2461=cut
2462*/
2463
a0d0e21e 2464I32
864dbfa3 2465Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2466 /* name of the subroutine */
2467 /* See G_* flags in cop.h */
a0d0e21e 2468{
864dbfa3 2469 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2470}
2471
954c1994
GS
2472/*
2473=for apidoc p||call_method
2474
2475Performs a callback to the specified Perl method. The blessed object must
2476be on the stack. See L<perlcall>.
2477
2478=cut
2479*/
2480
a0d0e21e 2481I32
864dbfa3 2482Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2483 /* name of the subroutine */
2484 /* See G_* flags in cop.h */
a0d0e21e 2485{
968b3946 2486 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2487}
2488
2489/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2490/*
2491=for apidoc p||call_sv
2492
2493Performs a callback to the Perl sub whose name is in the SV. See
2494L<perlcall>.
2495
2496=cut
2497*/
2498
a0d0e21e 2499I32
864dbfa3 2500Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2501 /* See G_* flags in cop.h */
a0d0e21e 2502{
27da23d5 2503 dVAR; dSP;
a0d0e21e 2504 LOGOP myop; /* fake syntax tree node */
968b3946 2505 UNOP method_op;
aa689395 2506 I32 oldmark;
13689cfe 2507 volatile I32 retval = 0;
a0d0e21e 2508 I32 oldscope;
54310121 2509 bool oldcatch = CATCH_GET;
6224f72b 2510 int ret;
c4420975 2511 OP* const oldop = PL_op;
db36c5a1 2512 dJMPENV;
1e422769 2513
a0d0e21e
LW
2514 if (flags & G_DISCARD) {
2515 ENTER;
2516 SAVETMPS;
2517 }
2518
aa689395 2519 Zero(&myop, 1, LOGOP);
54310121 2520 myop.op_next = Nullop;
f51d4af5 2521 if (!(flags & G_NOARGS))
aa689395 2522 myop.op_flags |= OPf_STACKED;
54310121
PP
2523 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2524 (flags & G_ARRAY) ? OPf_WANT_LIST :
2525 OPf_WANT_SCALAR);
462e5cf6 2526 SAVEOP();
533c011a 2527 PL_op = (OP*)&myop;
aa689395 2528
3280af22
NIS
2529 EXTEND(PL_stack_sp, 1);
2530 *++PL_stack_sp = sv;
aa689395 2531 oldmark = TOPMARK;
3280af22 2532 oldscope = PL_scopestack_ix;
a0d0e21e 2533
3280af22 2534 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2535 /* Handle first BEGIN of -d. */
3280af22 2536 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2537 /* Try harder, since this may have been a sighandler, thus
2538 * curstash may be meaningless. */
3280af22 2539 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2540 && !(flags & G_NODEBUG))
533c011a 2541 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2542
968b3946
GS
2543 if (flags & G_METHOD) {
2544 Zero(&method_op, 1, UNOP);
2545 method_op.op_next = PL_op;
2546 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2547 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2548 PL_op = (OP*)&method_op;
968b3946
GS
2549 }
2550
312caa8e 2551 if (!(flags & G_EVAL)) {
0cdb2077 2552 CATCH_SET(TRUE);
14dd3ad8 2553 call_body((OP*)&myop, FALSE);
312caa8e 2554 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2555 CATCH_SET(oldcatch);
312caa8e
CS
2556 }
2557 else {
d78bda3d 2558 myop.op_other = (OP*)&myop;
3280af22 2559 PL_markstack_ptr--;
4633a7c4
LW
2560 /* we're trying to emulate pp_entertry() here */
2561 {
c09156bb 2562 register PERL_CONTEXT *cx;
f54cb97a 2563 const I32 gimme = GIMME_V;
ac27b0f5 2564
4633a7c4
LW
2565 ENTER;
2566 SAVETMPS;
ac27b0f5 2567
1d76a5c3 2568 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2569 PUSHEVAL(cx, 0, 0);
533c011a 2570 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2571
faef0170 2572 PL_in_eval = EVAL_INEVAL;
4633a7c4 2573 if (flags & G_KEEPERR)
faef0170 2574 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2575 else
c69006e4 2576 sv_setpvn(ERRSV,"",0);
4633a7c4 2577 }
3280af22 2578 PL_markstack_ptr++;
a0d0e21e 2579
14dd3ad8 2580 JMPENV_PUSH(ret);
6224f72b
GS
2581 switch (ret) {
2582 case 0:
14dd3ad8
GS
2583 redo_body:
2584 call_body((OP*)&myop, FALSE);
312caa8e
CS
2585 retval = PL_stack_sp - (PL_stack_base + oldmark);
2586 if (!(flags & G_KEEPERR))
c69006e4 2587 sv_setpvn(ERRSV,"",0);
a0d0e21e 2588 break;
6224f72b 2589 case 1:
f86702cc 2590 STATUS_ALL_FAILURE;
a0d0e21e 2591 /* FALL THROUGH */
6224f72b 2592 case 2:
a0d0e21e 2593 /* my_exit() was called */
3280af22 2594 PL_curstash = PL_defstash;
a0d0e21e 2595 FREETMPS;
14dd3ad8 2596 JMPENV_POP;
cc3604b1 2597 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2598 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2599 my_exit_jump();
a0d0e21e 2600 /* NOTREACHED */
6224f72b 2601 case 3:
3280af22 2602 if (PL_restartop) {
533c011a 2603 PL_op = PL_restartop;
3280af22 2604 PL_restartop = 0;
312caa8e 2605 goto redo_body;
a0d0e21e 2606 }
3280af22 2607 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2608 if (flags & G_ARRAY)
2609 retval = 0;
2610 else {
2611 retval = 1;
3280af22 2612 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2613 }
312caa8e 2614 break;
a0d0e21e 2615 }
a0d0e21e 2616
3280af22 2617 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2618 SV **newsp;
2619 PMOP *newpm;
2620 I32 gimme;
c09156bb 2621 register PERL_CONTEXT *cx;
a0a2876f
LW
2622 I32 optype;
2623
2624 POPBLOCK(cx,newpm);
2625 POPEVAL(cx);
3280af22 2626 PL_curpm = newpm;
a0a2876f 2627 LEAVE;
9d4ba2ae
AL
2628 PERL_UNUSED_VAR(newsp);
2629 PERL_UNUSED_VAR(gimme);
2630 PERL_UNUSED_VAR(optype);
a0d0e21e 2631 }
14dd3ad8 2632 JMPENV_POP;
a0d0e21e 2633 }
1e422769 2634
a0d0e21e 2635 if (flags & G_DISCARD) {
3280af22 2636 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2637 retval = 0;
2638 FREETMPS;
2639 LEAVE;
2640 }
533c011a 2641 PL_op = oldop;
a0d0e21e
LW
2642 return retval;
2643}
2644
312caa8e 2645STATIC void
dd374669 2646S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2647{
97aff369 2648 dVAR;
312caa8e
CS
2649 if (PL_op == myop) {
2650 if (is_eval)
f807eda9 2651 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2652 else
f807eda9 2653 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2654 }
2655 if (PL_op)
cea2e8a9 2656 CALLRUNOPS(aTHX);
312caa8e
CS
2657}
2658
6e72f9df 2659/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2660
954c1994
GS
2661/*
2662=for apidoc p||eval_sv
2663
2664Tells Perl to C<eval> the string in the SV.
2665
2666=cut
2667*/
2668
a0d0e21e 2669I32
864dbfa3 2670Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2671
8ac85365 2672 /* See G_* flags in cop.h */
a0d0e21e 2673{
97aff369 2674 dVAR;
924508f0 2675 dSP;
a0d0e21e 2676 UNOP myop; /* fake syntax tree node */
8fa7f367 2677 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2678 volatile I32 retval = 0;
6224f72b 2679 int ret;
c4420975 2680 OP* const oldop = PL_op;
db36c5a1 2681 dJMPENV;
84902520 2682
4633a7c4
LW
2683 if (flags & G_DISCARD) {
2684 ENTER;
2685 SAVETMPS;
2686 }
2687
462e5cf6 2688 SAVEOP();
533c011a
NIS
2689 PL_op = (OP*)&myop;
2690 Zero(PL_op, 1, UNOP);
3280af22
NIS
2691 EXTEND(PL_stack_sp, 1);
2692 *++PL_stack_sp = sv;
79072805 2693
4633a7c4
LW
2694 if (!(flags & G_NOARGS))
2695 myop.op_flags = OPf_STACKED;
79072805 2696 myop.op_next = Nullop;
6e72f9df 2697 myop.op_type = OP_ENTEREVAL;
54310121
PP
2698 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2699 (flags & G_ARRAY) ? OPf_WANT_LIST :
2700 OPf_WANT_SCALAR);
6e72f9df
PP
2701 if (flags & G_KEEPERR)
2702 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2703
dedbcade
DM
2704 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2705 * before a PUSHEVAL, which corrupts the stack after a croak */
2706 TAINT_PROPER("eval_sv()");
2707
14dd3ad8 2708 JMPENV_PUSH(ret);
6224f72b
GS
2709 switch (ret) {
2710 case 0:
14dd3ad8
GS
2711 redo_body:
2712 call_body((OP*)&myop,TRUE);
312caa8e
CS
2713 retval = PL_stack_sp - (PL_stack_base + oldmark);
2714 if (!(flags & G_KEEPERR))
c69006e4 2715 sv_setpvn(ERRSV,"",0);
4633a7c4 2716 break;
6224f72b 2717 case 1:
f86702cc 2718 STATUS_ALL_FAILURE;
4633a7c4 2719 /* FALL THROUGH */
6224f72b 2720 case 2:
4633a7c4 2721 /* my_exit() was called */
3280af22 2722 PL_curstash = PL_defstash;
4633a7c4 2723 FREETMPS;
14dd3ad8 2724 JMPENV_POP;
cc3604b1 2725 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2726 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2727 my_exit_jump();
4633a7c4 2728 /* NOTREACHED */
6224f72b 2729 case 3:
3280af22 2730 if (PL_restartop) {
533c011a 2731 PL_op = PL_restartop;
3280af22 2732 PL_restartop = 0;
312caa8e 2733 goto redo_body;
4633a7c4 2734 }
3280af22 2735 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2736 if (flags & G_ARRAY)
2737 retval = 0;
2738 else {
2739 retval = 1;
3280af22 2740 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2741 }
312caa8e 2742 break;
4633a7c4
LW
2743 }
2744
14dd3ad8 2745 JMPENV_POP;
4633a7c4 2746 if (flags & G_DISCARD) {
3280af22 2747 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2748 retval = 0;
2749 FREETMPS;
2750 LEAVE;
2751 }
533c011a 2752 PL_op = oldop;
4633a7c4
LW
2753 return retval;
2754}
2755
954c1994
GS
2756/*
2757=for apidoc p||eval_pv
2758
2759Tells Perl to C<eval> the given string and return an SV* result.
2760
2761=cut
2762*/
2763
137443ea 2764SV*
864dbfa3 2765Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2766{
97aff369 2767 dVAR;
137443ea
PP
2768 dSP;
2769 SV* sv = newSVpv(p, 0);
2770
864dbfa3 2771 eval_sv(sv, G_SCALAR);
137443ea
PP
2772 SvREFCNT_dec(sv);
2773
2774 SPAGAIN;
2775 sv = POPs;
2776 PUTBACK;
2777
2d8e6c8d 2778 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2779 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2780 }
137443ea
PP
2781
2782 return sv;
2783}
2784
4633a7c4
LW
2785/* Require a module. */
2786
954c1994 2787/*
ccfc67b7
JH
2788=head1 Embedding Functions
2789
954c1994
GS
2790=for apidoc p||require_pv
2791
7d3fb230
BS
2792Tells Perl to C<require> the file named by the string argument. It is
2793analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2794implemented that way; consider using load_module instead.
954c1994 2795
7d3fb230 2796=cut */
954c1994 2797
4633a7c4 2798void
864dbfa3 2799Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2800{
97aff369 2801 dVAR;
d3acc0f7 2802 dSP;
97aff369 2803 SV* sv;
e788e7d3 2804 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2805 PUTBACK;
be41e5d9
NC
2806 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2807 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2808 SPAGAIN;
2809 POPSTACK;
79072805
LW
2810}
2811
79072805 2812void
e1ec3a88 2813Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2814{
71315bf2 2815 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2816
c4420975 2817 if (gv)
14befaf4 2818 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2819}
2820
76e3520e 2821STATIC void
e1ec3a88 2822S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2823{
ab821d7f 2824 /* This message really ought to be max 23 lines.
75c72d73 2825 * Removed -h because the user already knows that option. Others? */
fb73857a 2826
27da23d5 2827 static const char * const usage_msg[] = {
aefc56c5
SF
2828"-0[octal] specify record separator (\\0, if no argument)",
2829"-A[mod][=pattern] activate all/given assertions",
2830"-a autosplit mode with -n or -p (splits $_ into @F)",
2831"-C[number/list] enables the listed Unicode features",
2832"-c check syntax only (runs BEGIN and CHECK blocks)",
2833"-d[:debugger] run program under debugger",
2834"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2835"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2836"-E program like -e, but enables all optional features",
aefc56c5 2837"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2838"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2839"-i[extension] edit <> files in place (makes backup if extension supplied)",
2840"-Idirectory specify @INC/#include directory (several -I's allowed)",
2841"-l[octal] enable line ending processing, specifies line terminator",
2842"-[mM][-]module execute \"use/no module...\" before executing program",
2843"-n assume \"while (<>) { ... }\" loop around program",
2844"-p assume loop like -n but print line also, like sed",
2845"-P run program through C preprocessor before compilation",
2846"-s enable rudimentary parsing for switches after programfile",
2847"-S look for programfile using PATH environment variable",
2848"-t enable tainting warnings",
2849"-T enable tainting checks",
2850"-u dump core after parsing program",
2851"-U allow unsafe operations",
2852"-v print version, subversion (includes VERY IMPORTANT perl info)",
2853"-V[:variable] print configuration summary (or a single Config.pm variable)",
2854"-w enable many useful warnings (RECOMMENDED)",
2855"-W enable all warnings",
2856"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2857"-X disable all warnings",
fb73857a
PP
2858"\n",
2859NULL
2860};
27da23d5 2861 const char * const *p = usage_msg;
fb73857a 2862
b0e47665
GS
2863 PerlIO_printf(PerlIO_stdout(),
2864 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2865 name);
fb73857a 2866 while (*p)
b0e47665 2867 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2868}
2869
b4ab917c
DM
2870/* convert a string of -D options (or digits) into an int.
2871 * sets *s to point to the char after the options */
2872
2873#ifdef DEBUGGING
2874int
e1ec3a88 2875Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2876{
27da23d5 2877 static const char * const usage_msgd[] = {
e6e64d9b
JC
2878 " Debugging flag values: (see also -d)",
2879 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2880 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2881 " l Context (loop) stack processing",
2882 " t Trace execution",
2883 " o Method and overloading resolution",
2884 " c String/numeric conversions",
2885 " P Print profiling info, preprocessor command for -P, source file input state",
2886 " m Memory allocation",
2887 " f Format processing",
2888 " r Regular expression parsing and execution",
2889 " x Syntax tree dump",
3679267a 2890 " u Tainting checks",
e6e64d9b
JC
2891 " H Hash dump -- usurps values()",
2892 " X Scratchpad allocation",
2893 " D Cleaning up",
2894 " S Thread synchronization",
2895 " T Tokenising",
2896 " R Include reference counts of dumped variables (eg when using -Ds)",
2897 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2898 " v Verbose: use in conjunction with other flags",
2899 " C Copy On Write",
2900 " A Consistency checks on internal structures",
3679267a 2901 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2902 NULL
2903 };
b4ab917c
DM
2904 int i = 0;
2905 if (isALPHA(**s)) {
2906 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2907 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2908
2909 for (; isALNUM(**s); (*s)++) {
c4420975 2910 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2911 if (d)
2912 i |= 1 << (d - debopts);
2913 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2914 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2915 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2916 }
2917 }
e6e64d9b 2918 else if (isDIGIT(**s)) {
b4ab917c
DM
2919 i = atoi(*s);
2920 for (; isALNUM(**s); (*s)++) ;
2921 }
ddcf8bc1 2922 else if (givehelp) {
06e869a4 2923 const char *const *p = usage_msgd;
e6e64d9b
JC
2924 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2925 }
b4ab917c
DM
2926# ifdef EBCDIC
2927 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2928 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2929 "-Dp not implemented on this platform\n");
2930# endif
2931 return i;
2932}
2933#endif
2934
79072805
LW
2935/* This routine handles any switches that can be given during run */
2936
2937char *
cdd8118e 2938Perl_moreswitches(pTHX_ char *s, const int suidscript)
79072805 2939{
27da23d5 2940 dVAR;
84c133a0 2941 UV rschar;
79072805
LW
2942
2943 switch (*s) {
2944 case '0':
a863c7d1 2945 {
f2095865 2946 I32 flags = 0;
a3b680e6 2947 STRLEN numlen;
f2095865
JH
2948
2949 SvREFCNT_dec(PL_rs);
2950 if (s[1] == 'x' && s[2]) {
a3b680e6 2951 const char *e = s+=2;
f2095865
JH
2952 U8 *tmps;
2953
a3b680e6
AL
2954 while (*e)
2955 e++;
f2095865
JH
2956 numlen = e - s;
2957 flags = PERL_SCAN_SILENT_ILLDIGIT;
2958 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2959 if (s + numlen < e) {
2960 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2961 numlen = 0;
2962 s--;
2963 }
396482e1 2964 PL_rs = newSVpvs("");
c5661c80 2965 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2966 tmps = (U8*)SvPVX(PL_rs);
2967 uvchr_to_utf8(tmps, rschar);
2968 SvCUR_set(PL_rs, UNISKIP(rschar));
2969 SvUTF8_on(PL_rs);
2970 }
2971 else {
2972 numlen = 4;
2973 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2974 if (rschar & ~((U8)~0))
2975 PL_rs = &PL_sv_undef;
2976 else if (!rschar && numlen >= 2)
396482e1 2977 PL_rs = newSVpvs("");
f2095865
JH
2978 else {
2979 char ch = (char)rschar;
2980 PL_rs = newSVpvn(&ch, 1);
2981 }
2982 }
800633c3 2983 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 2984 return s + numlen;
a863c7d1 2985 }
46487f74 2986 case 'C':
a05d7ebb 2987 s++;
dd374669 2988 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 2989 return s;
2304df62 2990 case 'F':
3280af22 2991 PL_minus_F = TRUE;
ebce5377
RGS
2992 PL_splitstr = ++s;
2993 while (*s && !isSPACE(*s)) ++s;
2994 *s = '\0';
2995 PL_splitstr = savepv(PL_splitstr);
2304df62 2996 return s;
79072805 2997 case 'a':
3280af22 2998 PL_minus_a = TRUE;
79072805
LW
2999 s++;
3000 return s;
3001 case 'c':
3280af22 3002 PL_minus_c = TRUE;
79072805
LW
3003 s++;
3004 return s;
3005 case 'd':
cdd8118e 3006 forbid_setid('d', suidscript);
4633a7c4 3007 s++;
2cbb2ee1
RGS
3008
3009 /* -dt indicates to the debugger that threads will be used */
3010 if (*s == 't' && !isALNUM(s[1])) {
3011 ++s;
3012 my_setenv("PERL5DB_THREADED", "1");
3013 }
3014
70c94a19
RR
3015 /* The following permits -d:Mod to accepts arguments following an =
3016 in the fashion that -MSome::Mod does. */
3017 if (*s == ':' || *s == '=') {
06b5626a 3018 const char *start;
396482e1 3019 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3020 start = ++s;
3021 /* We now allow -d:Module=Foo,Bar */
3022 while(isALNUM(*s) || *s==':') ++s;
3023 if (*s != '=')
3024 sv_catpv(sv, start);
3025 else {
3026 sv_catpvn(sv, start, s-start);
0c5a913d 3027 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
70c94a19 3028 }
4633a7c4 3029 s += strlen(s);
184f32ec 3030 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3031 }
ed094faf 3032 if (!PL_perldb) {
3280af22 3033 PL_perldb = PERLDB_ALL;
a0d0e21e 3034 init_debugger();
ed094faf 3035 }
79072805
LW
3036 return s;
3037 case 'D':
0453d815 3038 {
79072805 3039#ifdef DEBUGGING
cdd8118e 3040 forbid_setid('D', suidscript);
b4ab917c 3041 s++;
dd374669 3042 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3043#else /* !DEBUGGING */
0453d815 3044 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3045 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3046 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3047 for (s++; isALNUM(*s); s++) ;
79072805 3048#endif
79072805 3049 return s;
0453d815 3050 }
4633a7c4 3051 case 'h':
ac27b0f5 3052 usage(PL_origargv[0]);
7ca617d0 3053 my_exit(0);
79072805 3054 case 'i':
43c5f42d 3055 Safefree(PL_inplace);
c030f24b
GH
3056#if defined(__CYGWIN__) /* do backup extension automagically */
3057 if (*(s+1) == '\0') {
c86a4f2e 3058 PL_inplace = savepvs(".bak");
c030f24b
GH
3059 return s+1;
3060 }
3061#endif /* __CYGWIN__ */
3280af22 3062 PL_inplace = savepv(s+1);
a6e20a40
AL
3063 for (s = PL_inplace; *s && !isSPACE(*s); s++)
3064 ;
7b8d334a 3065 if (*s) {
fb73857a 3066 *s++ = '\0';
7b8d334a
GS
3067 if (*s == '-') /* Additional switches on #! line. */
3068 s++;
3069 }
fb73857a 3070 return s;
4e49a025 3071 case 'I': /* -I handled both here and in parse_body() */
cdd8118e 3072 forbid_setid('I', suidscript);
fb73857a
PP
3073 ++s;
3074 while (*s && isSPACE(*s))
3075 ++s;
3076 if (*s) {
774d564b 3077 char *e, *p;
0df16ed7
GS
3078 p = s;
3079 /* ignore trailing spaces (possibly followed by other switches) */
3080 do {
3081 for (e = p; *e && !isSPACE(*e); e++) ;
3082 p = e;
3083 while (isSPACE(*p))
3084 p++;
3085 } while (*p && *p != '-');
3086 e = savepvn(s, e-s);
88fe16b2 3087 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3088 Safefree(e);
3089 s = p;
3090 if (*s == '-')
3091 s++;
79072805
LW
3092 }
3093 else
a67e862a 3094 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3095 return s;
79072805 3096 case 'l':
3280af22 3097 PL_minus_l = TRUE;
79072805 3098 s++;
7889fe52
NIS
3099 if (PL_ors_sv) {
3100 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3101 PL_ors_sv = NULL;
7889fe52 3102 }
79072805 3103 if (isDIGIT(*s)) {
53305cf1 3104 I32 flags = 0;
a3b680e6 3105 STRLEN numlen;
396482e1 3106 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3107 numlen = 3 + (*s == '0');
3108 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3109 s += numlen;
3110 }
3111 else {
8bfdd7d9 3112 if (RsPARA(PL_rs)) {
396482e1 3113 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3114 }
3115 else {
8bfdd7d9 3116 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3117 }
79072805
LW
3118 }
3119 return s;
06492da6 3120 case 'A':
cdd8118e 3121 forbid_setid('A', suidscript);
930366bd
RGS
3122 if (!PL_preambleav)
3123 PL_preambleav = newAV();
aefc56c5
SF
3124 s++;
3125 {
44f8325f 3126 char * const start = s;
396482e1 3127 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3128 while(isALNUM(*s) || *s == ':') ++s;
3129 if (s != start) {
396482e1 3130 sv_catpvs(sv, "::");
aefc56c5
SF
3131 sv_catpvn(sv, start, s-start);
3132 }
3133 if (*s == '=') {
0c5a913d 3134 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3135 s+=strlen(s);
3136 }
3137 else if (*s != '\0') {
551405c4 3138 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3139 }
06492da6 3140 av_push(PL_preambleav, sv);
aefc56c5 3141 return s;
06492da6 3142 }
1a30305b 3143 case 'M':
cdd8118e 3144 forbid_setid('M', suidscript); /* XXX ? */
1a30305b
PP
3145 /* FALL THROUGH */
3146 case 'm':
cdd8118e 3147 forbid_setid('m', suidscript); /* XXX ? */
1a30305b 3148 if (*++s) {
a5f75d66 3149 char *start;
11343788 3150 SV *sv;
e1ec3a88 3151 const char *use = "use ";
a5f75d66 3152 /* -M-foo == 'no foo' */
d0043bd1
NC
3153 /* Leading space on " no " is deliberate, to make both
3154 possibilities the same length. */
3155 if (*s == '-') { use = " no "; ++s; }
3156 sv = newSVpvn(use,4);
a5f75d66 3157 start = s;
1a30305b 3158 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3159 while(isALNUM(*s) || *s==':') ++s;
3160 if (*s != '=') {
11343788 3161 sv_catpv(sv, start);
c07a80fd
PP
3162 if (*(start-1) == 'm') {
3163 if (*s != '\0')
cea2e8a9 3164 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3165 sv_catpvs( sv, " ()");
c07a80fd
PP
3166 }
3167 } else {
6df41af2 3168 if (s == start)
be98fb35
GS
3169 Perl_croak(aTHX_ "Module name required with -%c option",
3170 s[-1]);
11343788 3171 sv_catpvn(sv, start, s-start);
396482e1
GA
3172 sv_catpvs(sv, " split(/,/,q");
3173 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3174 sv_catpv(sv, ++s);
396482e1 3175 sv_catpvs(sv, "\0)");
c07a80fd 3176 }
1a30305b 3177 s += strlen(s);
5c831c24 3178 if (!PL_preambleav)
3280af22
NIS
3179 PL_preambleav = newAV();
3180 av_push(PL_preambleav, sv);
1a30305b
PP
3181 }
3182 else
9e81e6a1 3183 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3184 return s;
79072805 3185 case 'n':
3280af22 3186 PL_minus_n = TRUE;
79072805
LW
3187 s++;
3188 return s;
3189 case 'p':
3280af22 3190 PL_minus_p = TRUE;
79072805
LW
3191 s++;
3192 return s;
3193 case 's':
cdd8118e 3194 forbid_setid('s', suidscript);
3280af22 3195 PL_doswitches = TRUE;
79072805
LW
3196 s++;
3197 return s;
6537fe72
MS
3198 case 't':
3199 if (!PL_tainting)
22f7c9c9 3200 TOO_LATE_FOR('t');
6537fe72
MS
3201 s++;
3202 return s;
463ee0b2 3203 case 'T':
3280af22 3204 if (!PL_tainting)
22f7c9c9 3205 TOO_LATE_FOR('T');
463ee0b2
LW
3206 s++;
3207 return s;
79072805 3208 case 'u':
bf4acbe4
GS
3209#ifdef MACOS_TRADITIONAL
3210 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3211#endif
3280af22 3212 PL_do_undump = TRUE;
79072805
LW
3213 s++;
3214 return s;
3215 case 'U':
3280af22 3216 PL_unsafe = TRUE;
79072805
LW
3217 s++;
3218 return s;
3219 case 'v':
d7aa5382 3220 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3221 upg_version(PL_patchlevel);
8e9464f1 3222#if !defined(DGUX)
b0e47665 3223 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3224 Perl_form(aTHX_ "\nThis is perl, %"SVf
3225#ifdef PERL_PATCHNUM
3226 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3227#endif
3228 " built for %s",
d7aa5382
JP
3229 vstringify(PL_patchlevel),
3230 ARCHNAME));
8e9464f1
JH
3231#else /* DGUX */
3232/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3233 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3234 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3235 vstringify(PL_patchlevel)));
8e9464f1
JH
3236 PerlIO_printf(PerlIO_stdout(),
3237 Perl_form(aTHX_ " built under %s at %s %s\n",
3238 OSNAME, __DATE__, __TIME__));
3239 PerlIO_printf(PerlIO_stdout(),
3240 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3241 OSVERS));
8e9464f1
JH
3242#endif /* !DGUX */
3243
fb73857a
PP
3244#if defined(LOCAL_PATCH_COUNT)
3245 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3246 PerlIO_printf(PerlIO_stdout(),
3247 "\n(with %d registered patch%s, "
3248 "see perl -V for more detail)",
3249 (int)LOCAL_PATCH_COUNT,
3250 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3251#endif
1a30305b 3252
b0e47665 3253 PerlIO_printf(PerlIO_stdout(),
3246d7a3 3254 "\n\nCopyright 1987-2006, Larry Wall\n");
eae9c151
JH
3255#ifdef MACOS_TRADITIONAL
3256 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3257 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3258 "maintained by Chris Nandor\n");
eae9c151 3259#endif
79072805 3260#ifdef MSDOS
b0e47665
GS
3261 PerlIO_printf(PerlIO_stdout(),
3262 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3263#endif
3264#ifdef DJGPP
b0e47665
GS
3265 PerlIO_printf(PerlIO_stdout(),
3266 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3267 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3268#endif
79072805 3269#ifdef OS2
b0e47665
GS
3270 PerlIO_printf(PerlIO_stdout(),
3271 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3272 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3273#endif
79072805 3274#ifdef atarist
b0e47665
GS
3275 PerlIO_printf(PerlIO_stdout(),
3276 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3277#endif
a3f9223b 3278#ifdef __BEOS__
b0e47665
GS
3279 PerlIO_printf(PerlIO_stdout(),
3280 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3281#endif
1d84e8df 3282#ifdef MPE
b0e47665 3283 PerlIO_printf(PerlIO_stdout(),
e583a879 3284 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3285#endif
9d116dd7 3286#ifdef OEMVS
b0e47665
GS
3287 PerlIO_printf(PerlIO_stdout(),
3288 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3289#endif
495c5fdc 3290#ifdef __VOS__
b0e47665 3291 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3292 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3293#endif
092bebab 3294#ifdef __OPEN_VM
b0e47665
GS
3295 PerlIO_printf(PerlIO_stdout(),
3296 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3297#endif
a1a0e61e 3298#ifdef POSIX_BC
b0e47665
GS
3299 PerlIO_printf(PerlIO_stdout(),
3300 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3301#endif
61ae2fbf 3302#ifdef __MINT__
b0e47665
GS
3303 PerlIO_printf(PerlIO_stdout(),
3304 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3305#endif
f83d2536 3306#ifdef EPOC
b0e47665 3307 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3308 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3309#endif
e1caacb4 3310#ifdef UNDER_CE
b475b3e6
JH
3311 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3312 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3313 wce_hitreturn();
3314#endif
a0fd4948 3315#ifdef __SYMBIAN32__
27da23d5
JH
3316 PerlIO_printf(PerlIO_stdout(),
3317 "Symbian port by Nokia, 2004-2005\n");
3318#endif
baed7233
DL
3319#ifdef BINARY_BUILD_NOTICE
3320 BINARY_BUILD_NOTICE;
3321#endif
b0e47665
GS
3322 PerlIO_printf(PerlIO_stdout(),
3323 "\n\
79072805 3324Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3325GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3326Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3327this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3328Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3329 my_exit(0);
79072805 3330 case 'w':
599cee73 3331 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3332 PL_dowarn |= G_WARN_ON;
599cee73
PM
3333 s++;
3334 return s;
3335 case 'W':
ac27b0f5 3336 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3337 if (!specialWARN(PL_compiling.cop_warnings))
3338 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3339 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3340 s++;
3341 return s;
3342 case 'X':
ac27b0f5 3343 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3344 if (!specialWARN(PL_compiling.cop_warnings))
3345 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3346 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3347 s++;
3348 return s;
a0d0e21e 3349 case '*':
79072805
LW
3350 case ' ':
3351 if (s[1] == '-') /* Additional switches on #! line. */
3352 return s+2;
3353 break;
a0d0e21e 3354 case '-':
79072805 3355 case 0:
51882d45 3356#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3357 case '\r':
3358#endif
79072805
LW
3359 case '\n':
3360 case '\t':
3361 break;
aa689395
PP
3362#ifdef ALTERNATE_SHEBANG
3363 case 'S': /* OS/2 needs -S on "extproc" line. */
3364 break;
3365#endif
a0d0e21e 3366 case 'P':
3280af22 3367 if (PL_preprocess)
a0d0e21e
LW
3368 return s+1;
3369 /* FALL THROUGH */
79072805 3370 default:
cea2e8a9 3371 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3372 }
bd61b366 3373 return NULL;
79072805
LW
3374}
3375
3376/* compliments of Tom Christiansen */
3377
3378/* unexec() can be found in the Gnu emacs distribution */
ee580363 3379/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3380
3381void
864dbfa3 3382Perl_my_unexec(pTHX)
79072805
LW
3383{
3384#ifdef UNEXEC
46fc3d4c
PP
3385 SV* prog;
3386 SV* file;
ee580363 3387 int status = 1;
79072805
LW
3388 extern int etext;
3389
ee580363 3390 prog = newSVpv(BIN_EXP, 0);
396482e1 3391 sv_catpvs(prog, "/perl");
6b88bc9c 3392 file = newSVpv(PL_origfilename, 0);
396482e1 3393 sv_catpvs(file, ".perldump");
79072805 3394
ee580363
GS
3395 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3396 /* unexec prints msg to stderr in case of failure */
6ad3d225 3397 PerlProc_exit(status);
79072805 3398#else
a5f75d66
AD
3399# ifdef VMS
3400# include <lib$routines.h>
3401 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3402# elif defined(WIN32) || defined(__CYGWIN__)
3403 Perl_croak(aTHX_ "dump is not supported");
aa689395 3404# else
79072805 3405 ABORT(); /* for use with undump */
aa689395 3406# endif
a5f75d66 3407#endif
79072805
LW
3408}
3409
cb68f92d
GS
3410/* initialize curinterp */
3411STATIC void
cea2e8a9 3412S_init_interp(pTHX)
cb68f92d 3413{
97aff369 3414 dVAR;
acfe0abc
GS
3415#ifdef MULTIPLICITY
3416# define PERLVAR(var,type)
3417# define PERLVARA(var,n,type)
3418# if defined(PERL_IMPLICIT_CONTEXT)
3419# if defined(USE_5005THREADS)
3420# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
27da23d5 3421# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
3422# else /* !USE_5005THREADS */
3423# define PERLVARI(var,type,init) aTHX->var = init;
3424# define PERLVARIC(var,type,init) aTHX->var = init;
3425# endif /* USE_5005THREADS */
3967c732 3426# else
acfe0abc
GS
3427# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3428# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3429# endif
acfe0abc
GS
3430# include "intrpvar.h"
3431# ifndef USE_5005THREADS
3432# include "thrdvar.h"
3433# endif
3434# undef PERLVAR
3435# undef PERLVARA
3436# undef PERLVARI
3437# undef PERLVARIC
3438#else
3439# define PERLVAR(var,type)
3440# define PERLVARA(var,n,type)
3441# define PERLVARI(var,type,init) PL_##var = init;
3442# define PERLVARIC(var,type,init) PL_##var = init;
3443# include "intrpvar.h"
3444# ifndef USE_5005THREADS
3445# include "thrdvar.h"
3446# endif
3447# undef PERLVAR
3448# undef PERLVARA
3449# undef PERLVARI
3450# undef PERLVARIC
cb68f92d
GS
3451#endif
3452
cb68f92d
GS
3453}
3454
76e3520e 3455STATIC void
cea2e8a9 3456S_init_main_stash(pTHX)
79072805 3457{
97aff369 3458 dVAR;
463ee0b2 3459 GV *gv;
6e72f9df 3460
3280af22 3461 PL_curstash = PL_defstash = newHV();
23579a14
NC
3462 /* We know that the string "main" will be in the global shared string
3463 table, so it's a small saving to use it rather than allocate another
3464 8 bytes. */
18916d0d 3465 PL_curstname = newSVpvs_share("main");
fafc274c 3466 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3467 /* If we hadn't caused another reference to "main" to be in the shared
3468 string table above, then it would be worth reordering these two,
3469 because otherwise all we do is delete "main" from it as a consequence
3470 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3471 SvREFCNT_dec(GvHV(gv));
23579a14 3472 hv_name_set(PL_defstash, "main", 4, 0);
3280af22 3473 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3474 SvREADONLY_on(gv);
fafc274c
NC
3475 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3476 SVt_PVAV)));
5fd80ba5 3477 SvREFCNT_inc(PL_incgv); /* Don't allow it to be freed */
3280af22 3478 GvMULTI_on(PL_incgv);
fafc274c 3479 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3480 GvMULTI_on(PL_hintgv);
fafc274c 3481 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5fd80ba5 3482 SvREFCNT_inc(PL_defgv);
fafc274c 3483 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5fd80ba5 3484 SvREFCNT_inc(PL_errgv);
3280af22 3485 GvMULTI_on(PL_errgv);
fafc274c 3486 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22 3487 GvMULTI_on(PL_replgv);
cea2e8a9 3488 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3489#ifdef PERL_DONT_CREATE_GVSV
3490 gv_SVadd(PL_errgv);
3491#endif
38a03e6e
MB
3492 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3493 sv_setpvn(ERRSV, "", 0);
3280af22