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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
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DM
15/* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
19 */
20
ae3f3efd
PS
21/* PSz 12 Nov 03
22 *
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
26 *
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
32 *
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
38 *
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
42 *
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
45 *
46 * References:
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
55 * CVE candidate:
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
011f1a1a
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85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
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95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
bf357333
NC
99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
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NC
108#endif
109
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110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
20fac488 140#ifndef NO_MATHOMS
d324d6de 141/* This reference ensures that the mathoms are linked with perl */
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142extern void Perl_mathoms(void);
143void Perl_mathoms_ref(void);
144void Perl_mathoms_ref(void) {
20fac488
GA
145 Perl_mathoms();
146}
147#endif
148
e6827a76 149static void
daa7d858 150S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 151{
27da23d5 152 dVAR;
e6827a76
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153 if (!PL_curinterp) {
154 PERL_SET_INTERP(my_perl);
3db8f154 155#if defined(USE_ITHREADS)
e6827a76
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156 INIT_THREADS;
157 ALLOC_THREAD_KEY;
158 PERL_SET_THX(my_perl);
159 OP_REFCNT_INIT;
160 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 161# endif
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162#ifdef PERL_IMPLICIT_CONTEXT
163 MUTEX_INIT(&PL_my_ctx_mutex);
164# endif
e6827a76
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165 }
166 else {
167 PERL_SET_THX(my_perl);
168 }
169}
06d86050 170
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171#ifdef PERL_IMPLICIT_SYS
172PerlInterpreter *
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173perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
174 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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175 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
176 struct IPerlDir* ipD, struct IPerlSock* ipS,
177 struct IPerlProc* ipP)
178{
179 PerlInterpreter *my_perl;
9f653bb5 180 /* Newx() needs interpreter, so call malloc() instead */
32e30700 181 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 182 S_init_tls_and_interp(my_perl);
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183 Zero(my_perl, 1, PerlInterpreter);
184 PL_Mem = ipM;
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185 PL_MemShared = ipMS;
186 PL_MemParse = ipMP;
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187 PL_Env = ipE;
188 PL_StdIO = ipStd;
189 PL_LIO = ipLIO;
190 PL_Dir = ipD;
191 PL_Sock = ipS;
192 PL_Proc = ipP;
7766f137 193
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194 return my_perl;
195}
196#else
954c1994
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197
198/*
ccfc67b7
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199=head1 Embedding Functions
200
954c1994
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201=for apidoc perl_alloc
202
203Allocates a new Perl interpreter. See L<perlembed>.
204
205=cut
206*/
207
93a17b20 208PerlInterpreter *
cea2e8a9 209perl_alloc(void)
79072805 210{
cea2e8a9 211 PerlInterpreter *my_perl;
79072805 212
9f653bb5 213 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 214 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 215
e6827a76 216 S_init_tls_and_interp(my_perl);
07409e01 217 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
79072805 218}
32e30700 219#endif /* PERL_IMPLICIT_SYS */
79072805 220
954c1994
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221/*
222=for apidoc perl_construct
223
224Initializes a new Perl interpreter. See L<perlembed>.
225
226=cut
227*/
228
79072805 229void
0cb96387 230perl_construct(pTHXx)
79072805 231{
27da23d5 232 dVAR;
9d4ba2ae 233 PERL_UNUSED_ARG(my_perl);
8990e307 234#ifdef MULTIPLICITY
54aff467 235 init_interp();
ac27b0f5 236 PL_perl_destruct_level = 1;
54aff467
GS
237#else
238 if (PL_perl_destruct_level > 0)
239 init_interp();
240#endif
33f46ff6 241 /* Init the real globals (and main thread)? */
3280af22 242 if (!PL_linestr) {
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243 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
244
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245 PL_linestr = NEWSV(65,79);
246 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 247
3280af22 248 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
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249 /* set read-only and try to insure than we wont see REFCNT==0
250 very often */
251
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252 SvREADONLY_on(&PL_sv_undef);
253 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 254
3280af22 255 sv_setpv(&PL_sv_no,PL_No);
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256 /* value lookup in void context - happens to have the side effect
257 of caching the numeric forms. */
258 SvIV(&PL_sv_no);
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259 SvNV(&PL_sv_no);
260 SvREADONLY_on(&PL_sv_no);
261 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 262
3280af22 263 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 264 SvIV(&PL_sv_yes);
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NIS
265 SvNV(&PL_sv_yes);
266 SvREADONLY_on(&PL_sv_yes);
267 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
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268
269 SvREADONLY_on(&PL_sv_placeholder);
270 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 271 }
79072805 272
8aad04aa 273 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 274#ifdef PERL_USES_PL_PIDSTATUS
3280af22 275 PL_pidstatus = newHV();
ca0c25f6 276#endif
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277 }
278
396482e1 279 PL_rs = newSVpvs("\n");
dc92893f 280
cea2e8a9 281 init_stacks();
79072805 282
748a9306 283 init_ids();
3280af22 284 PL_lex_state = LEX_NOTPARSING;
a5f75d66 285
312caa8e 286 JMPENV_BOOTSTRAP;
f86702cc
PP
287 STATUS_ALL_SUCCESS;
288
0672f40e 289 init_i18nl10n(1);
36477c24 290 SET_NUMERIC_STANDARD();
0b5b802d 291
ab821d7f 292#if defined(LOCAL_PATCH_COUNT)
3280af22 293 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
294#endif
295
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296#ifdef HAVE_INTERP_INTERN
297 sys_intern_init();
298#endif
299
3a1ee7e8 300 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 301
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302 PL_fdpid = newAV(); /* for remembering popen pids by fd */
303 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 304 PL_errors = newSVpvs("");
48c6b404 305 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
306 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
307 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 308#ifdef USE_ITHREADS
13137afc
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309 PL_regex_padav = newAV();
310 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
311 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 312#endif
e5dd39fc 313#ifdef USE_REENTRANT_API
59bd0823 314 Perl_reentrant_init(aTHX);
e5dd39fc 315#endif
3d47000e
AB
316
317 /* Note that strtab is a rather special HV. Assumptions are made
318 about not iterating on it, and not adding tie magic to it.
319 It is properly deallocated in perl_destruct() */
320 PL_strtab = newHV();
321
3d47000e
AB
322 HvSHAREKEYS_off(PL_strtab); /* mandatory */
323 hv_ksplit(PL_strtab, 512);
324
0631ea03
AB
325#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
326 _dyld_lookup_and_bind
327 ("__environ", (unsigned long *) &environ_pointer, NULL);
328#endif /* environ */
329
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JH
330#ifndef PERL_MICRO
331# ifdef USE_ENVIRON_ARRAY
0631ea03 332 PL_origenviron = environ;
2f42fcb0 333# endif
0631ea03
AB
334#endif
335
5311654c 336 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 337 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
338 * BeOS has those, but returns the wrong value.
339 * The HZ if not originally defined has been by now
340 * been defined as CLK_TCK, if available. */
dbc1d986 341#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
342 PL_clocktick = sysconf(_SC_CLK_TCK);
343 if (PL_clocktick <= 0)
344#endif
345 PL_clocktick = HZ;
346
081fc587
AB
347 PL_stashcache = newHV();
348
e6830b13
NC
349 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
350 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 351
27da23d5
JH
352#ifdef HAS_MMAP
353 if (!PL_mmap_page_size) {
354#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
355 {
356 SETERRNO(0, SS_NORMAL);
357# ifdef _SC_PAGESIZE
358 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
359# else
360 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
361# endif
362 if ((long) PL_mmap_page_size < 0) {
363 if (errno) {
44f8325f 364 SV * const error = ERRSV;
27da23d5 365 (void) SvUPGRADE(error, SVt_PV);
0510663f 366 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
367 }
368 else
369 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
370 }
371 }
372#else
373# ifdef HAS_GETPAGESIZE
374 PL_mmap_page_size = getpagesize();
375# else
376# if defined(I_SYS_PARAM) && defined(PAGESIZE)
377 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
378# endif
379# endif
380#endif
381 if (PL_mmap_page_size <= 0)
382 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
383 (IV) PL_mmap_page_size);
384 }
385#endif /* HAS_MMAP */
386
387#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
388 PL_timesbase.tms_utime = 0;
389 PL_timesbase.tms_stime = 0;
390 PL_timesbase.tms_cutime = 0;
391 PL_timesbase.tms_cstime = 0;
392#endif
393
8990e307 394 ENTER;
79072805
LW
395}
396
954c1994 397/*
62375a60
NIS
398=for apidoc nothreadhook
399
400Stub that provides thread hook for perl_destruct when there are
401no threads.
402
403=cut
404*/
405
406int
4e9e3734 407Perl_nothreadhook(pTHX)
62375a60
NIS
408{
409 return 0;
410}
411
41e4abd8
NC
412#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
413void
414Perl_dump_sv_child(pTHX_ SV *sv)
415{
416 ssize_t got;
bf357333
NC
417 const int sock = PL_dumper_fd;
418 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
419 union control_un control;
420 struct msghdr msg;
808ad2d0 421 struct iovec vec[2];
bf357333 422 struct cmsghdr *cmptr;
808ad2d0
NC
423 int returned_errno;
424 unsigned char buffer[256];
41e4abd8 425
bf357333 426 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
427 return;
428
429 PerlIO_flush(Perl_debug_log);
430
bf357333
NC
431 /* All these shenanigans are to pass a file descriptor over to our child for
432 it to dump out to. We can't let it hold open the file descriptor when it
433 forks, as the file descriptor it will dump to can turn out to be one end
434 of pipe that some other process will wait on for EOF. (So as it would
435 be open, the wait would be forever. */
436
437 msg.msg_control = control.control;
438 msg.msg_controllen = sizeof(control.control);
439 /* We're a connected socket so we don't need a destination */
440 msg.msg_name = NULL;
441 msg.msg_namelen = 0;
442 msg.msg_iov = vec;
808ad2d0 443 msg.msg_iovlen = 1;
bf357333
NC
444
445 cmptr = CMSG_FIRSTHDR(&msg);
446 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
447 cmptr->cmsg_level = SOL_SOCKET;
448 cmptr->cmsg_type = SCM_RIGHTS;
449 *((int *)CMSG_DATA(cmptr)) = 1;
450
451 vec[0].iov_base = (void*)&sv;
452 vec[0].iov_len = sizeof(sv);
453 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
454
455 if(got < 0) {
bf357333 456 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
457 abort();
458 }
bf357333
NC
459 if(got < sizeof(sv)) {
460 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
461 abort();
462 }
463
808ad2d0
NC
464 /* Return protocol is
465 int: errno value
466 unsigned char: length of location string (0 for empty)
467 unsigned char*: string (not terminated)
468 */
469 vec[0].iov_base = (void*)&returned_errno;
470 vec[0].iov_len = sizeof(returned_errno);
471 vec[1].iov_base = buffer;
472 vec[1].iov_len = 1;
473
474 got = readv(sock, vec, 2);
41e4abd8
NC
475
476 if(got < 0) {
477 perror("Debug leaking scalars parent read failed");
808ad2d0 478 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
479 abort();
480 }
808ad2d0 481 if(got < sizeof(returned_errno) + 1) {
41e4abd8 482 perror("Debug leaking scalars parent short read");
808ad2d0 483 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
484 abort();
485 }
486
808ad2d0
NC
487 if (*buffer) {
488 got = read(sock, buffer + 1, *buffer);
489 if(got < 0) {
490 perror("Debug leaking scalars parent read 2 failed");
491 PerlIO_flush(PerlIO_stderr());
492 abort();
493 }
494
495 if(got < *buffer) {
496 perror("Debug leaking scalars parent short read 2");
497 PerlIO_flush(PerlIO_stderr());
498 abort();
499 }
500 }
501
502 if (returned_errno || *buffer) {
503 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
504 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
505 returned_errno, strerror(returned_errno));
41e4abd8
NC
506 }
507}
508#endif
509
62375a60 510/*
954c1994
GS
511=for apidoc perl_destruct
512
513Shuts down a Perl interpreter. See L<perlembed>.
514
515=cut
516*/
517
31d77e54 518int
0cb96387 519perl_destruct(pTHXx)
79072805 520{
27da23d5 521 dVAR;
7c474504 522 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 523 HV *hv;
2aa47728 524#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
525 pid_t child;
526#endif
8990e307 527
9d4ba2ae
AL
528 PERL_UNUSED_ARG(my_perl);
529
7766f137
GS
530 /* wait for all pseudo-forked children to finish */
531 PERL_WAIT_FOR_CHILDREN;
532
3280af22 533 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
534#ifdef DEBUGGING
535 {
9d4ba2ae
AL
536 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
537 if (s) {
e1ec3a88 538 const int i = atoi(s);
5f05dabc
PP
539 if (destruct_level < i)
540 destruct_level = i;
541 }
4633a7c4
LW
542 }
543#endif
544
27da23d5 545 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
546 dJMPENV;
547 int x = 0;
548
549 JMPENV_PUSH(x);
1b6737cc 550 PERL_UNUSED_VAR(x);
f3faeb53
AB
551 if (PL_endav && !PL_minus_c)
552 call_list(PL_scopestack_ix, PL_endav);
553 JMPENV_POP;
26f423df 554 }
f3faeb53 555 LEAVE;
a0d0e21e
LW
556 FREETMPS;
557
e00b64d4 558 /* Need to flush since END blocks can produce output */
f13a2bc0 559 my_fflush_all();
e00b64d4 560
62375a60
NIS
561 if (CALL_FPTR(PL_threadhook)(aTHX)) {
562 /* Threads hook has vetoed further cleanup */
37038d91 563 return STATUS_EXIT;
62375a60
NIS
564 }
565
2aa47728
NC
566#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
567 if (destruct_level != 0) {
568 /* Fork here to create a child. Our child's job is to preserve the
569 state of scalars prior to destruction, so that we can instruct it
570 to dump any scalars that we later find have leaked.
571 There's no subtlety in this code - it assumes POSIX, and it doesn't
572 fail gracefully */
573 int fd[2];
574
575 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
576 perror("Debug leaking scalars socketpair failed");
577 abort();
578 }
579
580 child = fork();
581 if(child == -1) {
582 perror("Debug leaking scalars fork failed");
583 abort();
584 }
585 if (!child) {
586 /* We are the child */
3125a5a4
NC
587 const int sock = fd[1];
588 const int debug_fd = PerlIO_fileno(Perl_debug_log);
589 int f;
808ad2d0
NC
590 const char *where;
591 /* Our success message is an integer 0, and a char 0 */
592 static const char success[sizeof(int) + 1];
3125a5a4 593
2aa47728 594 close(fd[0]);
2aa47728 595
3125a5a4
NC
596 /* We need to close all other file descriptors otherwise we end up
597 with interesting hangs, where the parent closes its end of a
598 pipe, and sits waiting for (another) child to terminate. Only
599 that child never terminates, because it never gets EOF, because
bf357333
NC
600 we also have the far end of the pipe open. We even need to
601 close the debugging fd, because sometimes it happens to be one
602 end of a pipe, and a process is waiting on the other end for
603 EOF. Normally it would be closed at some point earlier in
604 destruction, but if we happen to cause the pipe to remain open,
605 EOF never occurs, and we get an infinite hang. Hence all the
606 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
607
608 f = sysconf(_SC_OPEN_MAX);
609 if(f < 0) {
808ad2d0
NC
610 where = "sysconf failed";
611 goto abort;
3125a5a4
NC
612 }
613 while (f--) {
614 if (f == sock)
615 continue;
3125a5a4
NC
616 close(f);
617 }
618
2aa47728
NC
619 while (1) {
620 SV *target;
bf357333
NC
621 union control_un control;
622 struct msghdr msg;
623 struct iovec vec[1];
624 struct cmsghdr *cmptr;
625 ssize_t got;
626 int got_fd;
627
628 msg.msg_control = control.control;
629 msg.msg_controllen = sizeof(control.control);
630 /* We're a connected socket so we don't need a source */
631 msg.msg_name = NULL;
632 msg.msg_namelen = 0;
633 msg.msg_iov = vec;
634 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
635
636 vec[0].iov_base = (void*)&target;
637 vec[0].iov_len = sizeof(target);
638
639 got = recvmsg(sock, &msg, 0);
2aa47728
NC
640
641 if(got == 0)
642 break;
643 if(got < 0) {
808ad2d0
NC
644 where = "recv failed";
645 goto abort;
2aa47728
NC
646 }
647 if(got < sizeof(target)) {
808ad2d0
NC
648 where = "short recv";
649 goto abort;
2aa47728 650 }
bf357333 651
808ad2d0
NC
652 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
653 where = "no cmsg";
654 goto abort;
655 }
656 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
657 where = "wrong cmsg_len";
658 goto abort;
659 }
660 if(cmptr->cmsg_level != SOL_SOCKET) {
661 where = "wrong cmsg_level";
662 goto abort;
663 }
664 if(cmptr->cmsg_type != SCM_RIGHTS) {
665 where = "wrong cmsg_type";
666 goto abort;
667 }
bf357333
NC
668
669 got_fd = *(int*)CMSG_DATA(cmptr);
670 /* For our last little bit of trickery, put the file descriptor
671 back into Perl_debug_log, as if we never actually closed it
672 */
808ad2d0
NC
673 if(got_fd != debug_fd) {
674 if (dup2(got_fd, debug_fd) == -1) {
675 where = "dup2";
676 goto abort;
677 }
678 }
2aa47728 679 sv_dump(target);
bf357333 680
2aa47728
NC
681 PerlIO_flush(Perl_debug_log);
682
808ad2d0 683 got = write(sock, &success, sizeof(success));
2aa47728
NC
684
685 if(got < 0) {
808ad2d0
NC
686 where = "write failed";
687 goto abort;
2aa47728 688 }
808ad2d0
NC
689 if(got < sizeof(success)) {
690 where = "short write";
691 goto abort;
2aa47728
NC
692 }
693 }
694 _exit(0);
808ad2d0
NC
695 abort:
696 {
697 int send_errno = errno;
698 unsigned char length = (unsigned char) strlen(where);
699 struct iovec failure[3] = {
700 {(void*)&send_errno, sizeof(send_errno)},
701 {&length, 1},
702 {(void*)where, length}
703 };
704 int got = writev(sock, failure, 3);
705 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
706 in the parent if we try to read from the socketpair after the
707 child has exited, even if there was data to read.
708 So sleep a bit to give the parent a fighting chance of
709 reading the data. */
710 sleep(2);
711 _exit((got == -1) ? errno : 0);
712 }
bf357333 713 /* End of child. */
2aa47728 714 }
41e4abd8 715 PL_dumper_fd = fd[0];
2aa47728
NC
716 close(fd[1]);
717 }
718#endif
719
ff0cee69
PP
720 /* We must account for everything. */
721
722 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
723 /* Do this now, because destroying ops can cause new SVs to be generated
724 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
725 PL_curcop to point to a valid op from which the filename structure
726 member is copied. */
727 PL_curcop = &PL_compiling;
3280af22 728 if (PL_main_root) {
4e380990
DM
729 /* ensure comppad/curpad to refer to main's pad */
730 if (CvPADLIST(PL_main_cv)) {
731 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
732 }
3280af22
NIS
733 op_free(PL_main_root);
734 PL_main_root = Nullop;
a0d0e21e 735 }
3280af22
NIS
736 PL_main_start = Nullop;
737 SvREFCNT_dec(PL_main_cv);
738 PL_main_cv = Nullcv;
24d3c518 739 PL_dirty = TRUE;
ff0cee69 740
13621cfb
NIS
741 /* Tell PerlIO we are about to tear things apart in case
742 we have layers which are using resources that should
743 be cleaned up now.
744 */
745
746 PerlIO_destruct(aTHX);
747
3280af22 748 if (PL_sv_objcount) {
a0d0e21e
LW
749 /*
750 * Try to destruct global references. We do this first so that the
751 * destructors and destructees still exist. Some sv's might remain.
752 * Non-referenced objects are on their own.
753 */
a0d0e21e 754 sv_clean_objs();
bf9cdc68 755 PL_sv_objcount = 0;
a0de6cf5
DM
756 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
757 PL_defoutgv = Nullgv; /* may have been freed */
8990e307
LW
758 }
759
5cd24f17 760 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
761 SvREFCNT_dec(PL_warnhook);
762 PL_warnhook = Nullsv;
763 SvREFCNT_dec(PL_diehook);
764 PL_diehook = Nullsv;
5cd24f17 765
4b556e6c 766 /* call exit list functions */
3280af22 767 while (PL_exitlistlen-- > 0)
acfe0abc 768 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 769
3280af22 770 Safefree(PL_exitlist);
4b556e6c 771
1c4916e5
CB
772 PL_exitlist = NULL;
773 PL_exitlistlen = 0;
774
a0d0e21e 775 if (destruct_level == 0){
8990e307 776
a0d0e21e 777 DEBUG_P(debprofdump());
ac27b0f5 778
56a2bab7
NIS
779#if defined(PERLIO_LAYERS)
780 /* No more IO - including error messages ! */
781 PerlIO_cleanup(aTHX);
782#endif
783
a0d0e21e 784 /* The exit() function will do everything that needs doing. */
37038d91 785 return STATUS_EXIT;
a0d0e21e 786 }
5dd60ef7 787
551a8b83 788 /* jettison our possibly duplicated environment */
4b647fb0
DM
789 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
790 * so we certainly shouldn't free it here
791 */
2f42fcb0 792#ifndef PERL_MICRO
4b647fb0 793#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 794 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
795#ifdef USE_ITHREADS
796 /* only main thread can free environ[0] contents */
797 && PL_curinterp == aTHX
798#endif
799 )
800 {
551a8b83
JH
801 I32 i;
802
803 for (i = 0; environ[i]; i++)
4b420006 804 safesysfree(environ[i]);
0631ea03 805
4b420006
JH
806 /* Must use safesysfree() when working with environ. */
807 safesysfree(environ);
551a8b83
JH
808
809 environ = PL_origenviron;
810 }
811#endif
2f42fcb0 812#endif /* !PERL_MICRO */
551a8b83 813
804ffa60
DM
814 /* reset so print() ends up where we expect */
815 setdefout(Nullgv);
816
5f8cb046
DM
817#ifdef USE_ITHREADS
818 /* the syntax tree is shared between clones
819 * so op_free(PL_main_root) only ReREFCNT_dec's
820 * REGEXPs in the parent interpreter
821 * we need to manually ReREFCNT_dec for the clones
822 */
823 {
824 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 825 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
826
827 while (i) {
c4420975 828 SV * const resv = ary[--i];
35061a7e
DM
829
830 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 831 /* this is PL_reg_curpm, already freed
35061a7e
DM
832 * flag is set in regexec.c:S_regtry
833 */
834 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 835 }
1cc8b4c5
AB
836 else if(SvREPADTMP(resv)) {
837 SvREPADTMP_off(resv);
838 }
a560f29b
NC
839 else if(SvIOKp(resv)) {
840 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
841 ReREFCNT_dec(re);
842 }
843 }
844 }
845 SvREFCNT_dec(PL_regex_padav);
7d49f689 846 PL_regex_padav = NULL;
5f8cb046
DM
847 PL_regex_pad = NULL;
848#endif
849
081fc587
AB
850 SvREFCNT_dec((SV*) PL_stashcache);
851 PL_stashcache = NULL;
852
5f05dabc
PP
853 /* loosen bonds of global variables */
854
3280af22
NIS
855 if(PL_rsfp) {
856 (void)PerlIO_close(PL_rsfp);
857 PL_rsfp = Nullfp;
8ebc5c01
PP
858 }
859
860 /* Filters for program text */
3280af22 861 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 862 PL_rsfp_filters = NULL;
8ebc5c01
PP
863
864 /* switches */
3280af22
NIS
865 PL_preprocess = FALSE;
866 PL_minus_n = FALSE;
867 PL_minus_p = FALSE;
868 PL_minus_l = FALSE;
869 PL_minus_a = FALSE;
870 PL_minus_F = FALSE;
871 PL_doswitches = FALSE;
599cee73 872 PL_dowarn = G_WARN_OFF;
3280af22
NIS
873 PL_doextract = FALSE;
874 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
875 PL_unsafe = FALSE;
876
877 Safefree(PL_inplace);
878 PL_inplace = Nullch;
a7cb1f99 879 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
880
881 if (PL_e_script) {
882 SvREFCNT_dec(PL_e_script);
883 PL_e_script = Nullsv;
8ebc5c01
PP
884 }
885
bf9cdc68
RG
886 PL_perldb = 0;
887
8ebc5c01
PP
888 /* magical thingies */
889
7889fe52
NIS
890 SvREFCNT_dec(PL_ofs_sv); /* $, */
891 PL_ofs_sv = Nullsv;
5f05dabc 892
7889fe52
NIS
893 SvREFCNT_dec(PL_ors_sv); /* $\ */
894 PL_ors_sv = Nullsv;
8ebc5c01 895
3280af22
NIS
896 SvREFCNT_dec(PL_rs); /* $/ */
897 PL_rs = Nullsv;
dc92893f 898
d33b2eba
GS
899 PL_multiline = 0; /* $* */
900 Safefree(PL_osname); /* $^O */
901 PL_osname = Nullch;
5f05dabc 902
3280af22
NIS
903 SvREFCNT_dec(PL_statname);
904 PL_statname = Nullsv;
905 PL_statgv = Nullgv;
5f05dabc 906
8ebc5c01
PP
907 /* defgv, aka *_ should be taken care of elsewhere */
908
8ebc5c01 909 /* clean up after study() */
3280af22
NIS
910 SvREFCNT_dec(PL_lastscream);
911 PL_lastscream = Nullsv;
912 Safefree(PL_screamfirst);
913 PL_screamfirst = 0;
914 Safefree(PL_screamnext);
915 PL_screamnext = 0;
8ebc5c01 916
7d5ea4e7
GS
917 /* float buffer */
918 Safefree(PL_efloatbuf);
919 PL_efloatbuf = Nullch;
920 PL_efloatsize = 0;
921
8ebc5c01 922 /* startup and shutdown function lists */
3280af22 923 SvREFCNT_dec(PL_beginav);
5a837c8f 924 SvREFCNT_dec(PL_beginav_save);
3280af22 925 SvREFCNT_dec(PL_endav);
7d30b5c4 926 SvREFCNT_dec(PL_checkav);
ece599bd 927 SvREFCNT_dec(PL_checkav_save);
3280af22 928 SvREFCNT_dec(PL_initav);
7d49f689
NC
929 PL_beginav = NULL;
930 PL_beginav_save = NULL;
931 PL_endav = NULL;
932 PL_checkav = NULL;
933 PL_checkav_save = NULL;
934 PL_initav = NULL;
5618dfe8 935
8ebc5c01 936 /* shortcuts just get cleared */
3280af22 937 PL_envgv = Nullgv;
3280af22
NIS
938 PL_incgv = Nullgv;
939 PL_hintgv = Nullgv;
940 PL_errgv = Nullgv;
941 PL_argvgv = Nullgv;
942 PL_argvoutgv = Nullgv;
943 PL_stdingv = Nullgv;
bf49b057 944 PL_stderrgv = Nullgv;
3280af22
NIS
945 PL_last_in_gv = Nullgv;
946 PL_replgv = Nullgv;
bf9cdc68
RG
947 PL_DBgv = Nullgv;
948 PL_DBline = Nullgv;
949 PL_DBsub = Nullgv;
950 PL_DBsingle = Nullsv;
951 PL_DBtrace = Nullsv;
952 PL_DBsignal = Nullsv;
953 PL_DBassertion = Nullsv;
954 PL_DBcv = Nullcv;
7d49f689 955 PL_dbargs = NULL;
5c284bb0 956 PL_debstash = NULL;
8ebc5c01 957
7a1c5554 958 SvREFCNT_dec(PL_argvout_stack);
7d49f689 959 PL_argvout_stack = NULL;
8ebc5c01 960
5c831c24 961 SvREFCNT_dec(PL_modglobal);
5c284bb0 962 PL_modglobal = NULL;
5c831c24 963 SvREFCNT_dec(PL_preambleav);
7d49f689 964 PL_preambleav = NULL;
5c831c24
GS
965 SvREFCNT_dec(PL_subname);
966 PL_subname = Nullsv;
967 SvREFCNT_dec(PL_linestr);
968 PL_linestr = Nullsv;
ca0c25f6 969#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 970 SvREFCNT_dec(PL_pidstatus);
5c284bb0 971 PL_pidstatus = NULL;
ca0c25f6 972#endif
5c831c24
GS
973 SvREFCNT_dec(PL_toptarget);
974 PL_toptarget = Nullsv;
975 SvREFCNT_dec(PL_bodytarget);
976 PL_bodytarget = Nullsv;
977 PL_formtarget = Nullsv;
978
d33b2eba 979 /* free locale stuff */
b9582b6a 980#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
981 Safefree(PL_collation_name);
982 PL_collation_name = Nullch;
b9582b6a 983#endif
d33b2eba 984
b9582b6a 985#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
986 Safefree(PL_numeric_name);
987 PL_numeric_name = Nullch;
a453c169 988 SvREFCNT_dec(PL_numeric_radix_sv);
bf9cdc68 989 PL_numeric_radix_sv = Nullsv;
b9582b6a 990#endif
d33b2eba 991
5c831c24
GS
992 /* clear utf8 character classes */
993 SvREFCNT_dec(PL_utf8_alnum);
994 SvREFCNT_dec(PL_utf8_alnumc);
995 SvREFCNT_dec(PL_utf8_ascii);
996 SvREFCNT_dec(PL_utf8_alpha);
997 SvREFCNT_dec(PL_utf8_space);
998 SvREFCNT_dec(PL_utf8_cntrl);
999 SvREFCNT_dec(PL_utf8_graph);
1000 SvREFCNT_dec(PL_utf8_digit);
1001 SvREFCNT_dec(PL_utf8_upper);
1002 SvREFCNT_dec(PL_utf8_lower);
1003 SvREFCNT_dec(PL_utf8_print);
1004 SvREFCNT_dec(PL_utf8_punct);
1005 SvREFCNT_dec(PL_utf8_xdigit);
1006 SvREFCNT_dec(PL_utf8_mark);
1007 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1008 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1009 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1010 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1011 SvREFCNT_dec(PL_utf8_idstart);
1012 SvREFCNT_dec(PL_utf8_idcont);
5c831c24
GS
1013 PL_utf8_alnum = Nullsv;
1014 PL_utf8_alnumc = Nullsv;
1015 PL_utf8_ascii = Nullsv;
1016 PL_utf8_alpha = Nullsv;
1017 PL_utf8_space = Nullsv;
1018 PL_utf8_cntrl = Nullsv;
1019 PL_utf8_graph = Nullsv;
1020 PL_utf8_digit = Nullsv;
1021 PL_utf8_upper = Nullsv;
1022 PL_utf8_lower = Nullsv;
1023 PL_utf8_print = Nullsv;
1024 PL_utf8_punct = Nullsv;
1025 PL_utf8_xdigit = Nullsv;
1026 PL_utf8_mark = Nullsv;
1027 PL_utf8_toupper = Nullsv;
1028 PL_utf8_totitle = Nullsv;
1029 PL_utf8_tolower = Nullsv;
b4e400f9 1030 PL_utf8_tofold = Nullsv;
82686b01
JH
1031 PL_utf8_idstart = Nullsv;
1032 PL_utf8_idcont = Nullsv;
5c831c24 1033
971a9dd3
GS
1034 if (!specialWARN(PL_compiling.cop_warnings))
1035 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 1036 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
1037 if (!specialCopIO(PL_compiling.cop_io))
1038 SvREFCNT_dec(PL_compiling.cop_io);
1039 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS
1040 CopFILE_free(&PL_compiling);
1041 CopSTASH_free(&PL_compiling);
5c831c24 1042
a0d0e21e 1043 /* Prepare to destruct main symbol table. */
5f05dabc 1044
3280af22
NIS
1045 hv = PL_defstash;
1046 PL_defstash = 0;
a0d0e21e 1047 SvREFCNT_dec(hv);
5c831c24
GS
1048 SvREFCNT_dec(PL_curstname);
1049 PL_curstname = Nullsv;
a0d0e21e 1050
5a844595
GS
1051 /* clear queued errors */
1052 SvREFCNT_dec(PL_errors);
1053 PL_errors = Nullsv;
1054
a0d0e21e 1055 FREETMPS;
0453d815 1056 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1057 if (PL_scopestack_ix != 0)
9014280d 1058 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1059 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1060 (long)PL_scopestack_ix);
1061 if (PL_savestack_ix != 0)
9014280d 1062 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1063 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1064 (long)PL_savestack_ix);
1065 if (PL_tmps_floor != -1)
9014280d 1066 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1067 (long)PL_tmps_floor + 1);
a0d0e21e 1068 if (cxstack_ix != -1)
9014280d 1069 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1070 (long)cxstack_ix + 1);
a0d0e21e 1071 }
8990e307
LW
1072
1073 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1074 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1075 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1076
1077 /* the 2 is for PL_fdpid and PL_strtab */
1078 while (PL_sv_count > 2 && sv_clean_all())
1079 ;
1080
d33b2eba
GS
1081 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1082 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1083 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1084 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1085
d4777f27
GS
1086 AvREAL_off(PL_fdpid); /* no surviving entries */
1087 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1088 PL_fdpid = NULL;
d33b2eba 1089
6c644e78
GS
1090#ifdef HAVE_INTERP_INTERN
1091 sys_intern_clear();
1092#endif
1093
6e72f9df
PP
1094 /* Destruct the global string table. */
1095 {
1096 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1097 * so that sv_free() won't fail on them.
80459961
NC
1098 * Now that the global string table is using a single hunk of memory
1099 * for both HE and HEK, we either need to explicitly unshare it the
1100 * correct way, or actually free things here.
6e72f9df 1101 */
80459961
NC
1102 I32 riter = 0;
1103 const I32 max = HvMAX(PL_strtab);
c4420975 1104 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1105 HE *hent = array[0];
1106
6e72f9df 1107 for (;;) {
0453d815 1108 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1109 HE * const next = HeNEXT(hent);
9014280d 1110 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f
AL
1111 "Unbalanced string table refcount: (%ld) for \"%s\"",
1112 (long)(HeVAL(hent) - Nullsv), HeKEY(hent));
80459961
NC
1113 Safefree(hent);
1114 hent = next;
6e72f9df
PP
1115 }
1116 if (!hent) {
1117 if (++riter > max)
1118 break;
1119 hent = array[riter];
1120 }
1121 }
80459961
NC
1122
1123 Safefree(array);
1124 HvARRAY(PL_strtab) = 0;
1125 HvTOTALKEYS(PL_strtab) = 0;
1126 HvFILL(PL_strtab) = 0;
6e72f9df 1127 }
3280af22 1128 SvREFCNT_dec(PL_strtab);
6e72f9df 1129
e652bb2f 1130#ifdef USE_ITHREADS
c21d1a0f 1131 /* free the pointer tables used for cloning */
a0739874 1132 ptr_table_free(PL_ptr_table);
bf9cdc68 1133 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1134#endif
a0739874 1135
d33b2eba
GS
1136 /* free special SVs */
1137
1138 SvREFCNT(&PL_sv_yes) = 0;
1139 sv_clear(&PL_sv_yes);
1140 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1141 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1142
1143 SvREFCNT(&PL_sv_no) = 0;
1144 sv_clear(&PL_sv_no);
1145 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1146 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1147
9f375a43
DM
1148 {
1149 int i;
1150 for (i=0; i<=2; i++) {
1151 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1152 sv_clear(PERL_DEBUG_PAD(i));
1153 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1154 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1155 }
1156 }
1157
0453d815 1158 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1159 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1160
eba0f806
DM
1161#ifdef DEBUG_LEAKING_SCALARS
1162 if (PL_sv_count != 0) {
1163 SV* sva;
1164 SV* sv;
1165 register SV* svend;
1166
1167 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1168 svend = &sva[SvREFCNT(sva)];
1169 for (sv = sva + 1; sv < svend; ++sv) {
1170 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1171 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1172 " flags=0x%"UVxf
fd0854ff
DM
1173 " refcnt=%"UVuf pTHX__FORMAT "\n"
1174 "\tallocated at %s:%d %s %s%s\n",
1175 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1176 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1177 sv->sv_debug_line,
1178 sv->sv_debug_inpad ? "for" : "by",
1179 sv->sv_debug_optype ?
1180 PL_op_name[sv->sv_debug_optype]: "(none)",
1181 sv->sv_debug_cloned ? " (cloned)" : ""
1182 );
2aa47728 1183#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1184 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1185#endif
eba0f806
DM
1186 }
1187 }
1188 }
1189 }
2aa47728
NC
1190#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1191 {
1192 int status;
1193 fd_set rset;
1194 /* Wait for up to 4 seconds for child to terminate.
1195 This seems to be the least effort way of timing out on reaping
1196 its exit status. */
1197 struct timeval waitfor = {4, 0};
41e4abd8 1198 int sock = PL_dumper_fd;
2aa47728
NC
1199
1200 shutdown(sock, 1);
1201 FD_ZERO(&rset);
1202 FD_SET(sock, &rset);
1203 select(sock + 1, &rset, NULL, NULL, &waitfor);
1204 waitpid(child, &status, WNOHANG);
1205 close(sock);
1206 }
1207#endif
eba0f806 1208#endif
bf9cdc68 1209 PL_sv_count = 0;
eba0f806
DM
1210
1211
56a2bab7 1212#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1213 /* No more IO - including error messages ! */
1214 PerlIO_cleanup(aTHX);
1215#endif
1216
9f4bd222
NIS
1217 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1218 as currently layers use it rather than Nullsv as a marker
1219 for no arg - and will try and SvREFCNT_dec it.
1220 */
1221 SvREFCNT(&PL_sv_undef) = 0;
1222 SvREADONLY_off(&PL_sv_undef);
1223
3280af22 1224 Safefree(PL_origfilename);
bf9cdc68 1225 PL_origfilename = Nullch;
3280af22 1226 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1227 PL_reg_start_tmp = (char**)NULL;
1228 PL_reg_start_tmpl = 0;
43c5f42d 1229 Safefree(PL_reg_curpm);
82ba1be6 1230 Safefree(PL_reg_poscache);
dd28f7bb 1231 free_tied_hv_pool();
3280af22 1232 Safefree(PL_op_mask);
cf36064f 1233 Safefree(PL_psig_ptr);
bf9cdc68 1234 PL_psig_ptr = (SV**)NULL;
cf36064f 1235 Safefree(PL_psig_name);
bf9cdc68 1236 PL_psig_name = (SV**)NULL;
2c2666fc 1237 Safefree(PL_bitcount);
bf9cdc68 1238 PL_bitcount = Nullch;
ce08f86c 1239 Safefree(PL_psig_pend);
bf9cdc68
RG
1240 PL_psig_pend = (int*)NULL;
1241 PL_formfeed = Nullsv;
6e72f9df 1242 nuke_stacks();
bf9cdc68
RG
1243 PL_tainting = FALSE;
1244 PL_taint_warn = FALSE;
3280af22 1245 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1246 PL_debug = 0;
ac27b0f5 1247
a0d0e21e 1248 DEBUG_P(debprofdump());
d33b2eba 1249
e5dd39fc 1250#ifdef USE_REENTRANT_API
10bc17b6 1251 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1252#endif
1253
612f20c3
GS
1254 sv_free_arenas();
1255
fc36a67e
PP
1256 /* As the absolutely last thing, free the non-arena SV for mess() */
1257
3280af22 1258 if (PL_mess_sv) {
f350b448
NC
1259 /* we know that type == SVt_PVMG */
1260
9c63abab 1261 /* it could have accumulated taint magic */
f350b448
NC
1262 MAGIC* mg;
1263 MAGIC* moremagic;
1264 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1265 moremagic = mg->mg_moremagic;
1266 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1267 && mg->mg_len >= 0)
1268 Safefree(mg->mg_ptr);
1269 Safefree(mg);
9c63abab 1270 }
f350b448 1271
fc36a67e 1272 /* we know that type >= SVt_PV */
8bd4d4c5 1273 SvPV_free(PL_mess_sv);
3280af22
NIS
1274 Safefree(SvANY(PL_mess_sv));
1275 Safefree(PL_mess_sv);
1276 PL_mess_sv = Nullsv;
fc36a67e 1277 }
37038d91 1278 return STATUS_EXIT;
79072805
LW
1279}
1280
954c1994
GS
1281/*
1282=for apidoc perl_free
1283
1284Releases a Perl interpreter. See L<perlembed>.
1285
1286=cut
1287*/
1288
79072805 1289void
0cb96387 1290perl_free(pTHXx)
79072805 1291{
acfe0abc 1292#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1293# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS
1294# ifdef NETWARE
1295 void *host = nw_internal_host;
1296# else
1297 void *host = w32_internal_host;
1298# endif
ce3e5b80 1299 PerlMem_free(aTHXx);
acfe0abc 1300# ifdef NETWARE
011f1a1a 1301 nw_delete_internal_host(host);
acfe0abc
GS
1302# else
1303 win32_delete_internal_host(host);
1304# endif
1c0ca838
GS
1305# else
1306 PerlMem_free(aTHXx);
1307# endif
acfe0abc
GS
1308#else
1309 PerlMem_free(aTHXx);
76e3520e 1310#endif
79072805
LW
1311}
1312
aebd1ac7
GA
1313#if defined(USE_5005THREADS) || defined(USE_ITHREADS)
1314/* provide destructors to clean up the thread key when libperl is unloaded */
1315#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1316
110d3f98 1317#if defined(__hpux) && __ux_version > 1020 && !defined(__GNUC__)
aebd1ac7
GA
1318#pragma fini "perl_fini"
1319#endif
1320
0dbb1585
AL
1321static void
1322#if defined(__GNUC__)
1323__attribute__((destructor))
aebd1ac7 1324#endif
de009b76 1325perl_fini(void)
aebd1ac7 1326{
27da23d5 1327 dVAR;
aebd1ac7
GA
1328 if (PL_curinterp)
1329 FREE_THREAD_KEY;
1330}
1331
1332#endif /* WIN32 */
1333#endif /* THREADS */
1334
4b556e6c 1335void
864dbfa3 1336Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1337{
97aff369 1338 dVAR;
3280af22
NIS
1339 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1340 PL_exitlist[PL_exitlistlen].fn = fn;
1341 PL_exitlist[PL_exitlistlen].ptr = ptr;
1342 ++PL_exitlistlen;
4b556e6c
JD
1343}
1344
56cf6df8
RGS
1345#ifdef HAS_PROCSELFEXE
1346/* This is a function so that we don't hold on to MAXPATHLEN
1347 bytes of stack longer than necessary
1348 */
1349STATIC void
e1ec3a88 1350S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1351{
1352 char buf[MAXPATHLEN];
1353 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1354
1355 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1356 includes a spurious NUL which will cause $^X to fail in system
1357 or backticks (this will prevent extensions from being built and
1358 many tests from working). readlink is not meant to add a NUL.
1359 Normal readlink works fine.
1360 */
1361 if (len > 0 && buf[len-1] == '\0') {
1362 len--;
1363 }
1364
1365 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1366 returning the text "unknown" from the readlink rather than the path
1367 to the executable (or returning an error from the readlink). Any valid
1368 path has a '/' in it somewhere, so use that to validate the result.
1369 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1370 */
1371 if (len > 0 && memchr(buf, '/', len)) {
1372 sv_setpvn(sv,buf,len);
1373 }
1374 else {
1375 sv_setpv(sv,arg0);
1376 }
1377}
1378#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1379
1380STATIC void
1381S_set_caret_X(pTHX) {
97aff369 1382 dVAR;
b7975bdd
NC
1383 GV* tmpgv = gv_fetchpv("\030",TRUE, SVt_PV); /* $^X */
1384 if (tmpgv) {
1385#ifdef HAS_PROCSELFEXE
1386 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1387#else
1388#ifdef OS2
c69033f2 1389 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1390#else
c69033f2 1391 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1392#endif
1393#endif
1394 }
1395}
1396
954c1994
GS
1397/*
1398=for apidoc perl_parse
1399
1400Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1401
1402=cut
1403*/
1404
79072805 1405int
0cb96387 1406perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1407{
27da23d5 1408 dVAR;
6224f72b 1409 I32 oldscope;
6224f72b 1410 int ret;
db36c5a1 1411 dJMPENV;
8d063cd8 1412
9d4ba2ae
AL
1413 PERL_UNUSED_VAR(my_perl);
1414
a687059c
LW
1415#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1416#ifdef IAMSUID
1417#undef IAMSUID
cea2e8a9 1418 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1419setuid perl scripts securely.\n");
ae3f3efd 1420#endif /* IAMSUID */
a687059c
LW
1421#endif
1422
b0891165
JH
1423#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1424 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1425 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1426 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1427 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1428 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1429 if (!PL_rehash_seed_set)
1430 PL_rehash_seed = get_hash_seed();
b0891165 1431 {
9d4ba2ae 1432 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1433
1b6737cc
AL
1434 if (s && (atoi(s) == 1))
1435 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1436 }
1437#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1438
3280af22 1439 PL_origargc = argc;
e2975953 1440 PL_origargv = argv;
a0d0e21e 1441
a2722ac9
GA
1442 if (PL_origalen != 0) {
1443 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1444 }
1445 else {
3cb9023d
JH
1446 /* Set PL_origalen be the sum of the contiguous argv[]
1447 * elements plus the size of the env in case that it is
e9137a8e 1448 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1449 * as the maximum modifiable length of $0. In the worst case
1450 * the area we are able to modify is limited to the size of
43c32782 1451 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1452 * --jhi */
e1ec3a88 1453 const char *s = NULL;
54bfe034 1454 int i;
1b6737cc 1455 const UV mask =
7d8e7db3 1456 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1457 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1458 const UV aligned =
43c32782
JH
1459 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1460
1461 /* See if all the arguments are contiguous in memory. Note
1462 * that 'contiguous' is a loose term because some platforms
1463 * align the argv[] and the envp[]. If the arguments look
1464 * like non-aligned, assume that they are 'strictly' or
1465 * 'traditionally' contiguous. If the arguments look like
1466 * aligned, we just check that they are within aligned
1467 * PTRSIZE bytes. As long as no system has something bizarre
1468 * like the argv[] interleaved with some other data, we are
1469 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1470 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1471 while (*s) s++;
1472 for (i = 1; i < PL_origargc; i++) {
1473 if ((PL_origargv[i] == s + 1
43c32782 1474#ifdef OS2
c8941eeb 1475 || PL_origargv[i] == s + 2
43c32782 1476#endif
c8941eeb
JH
1477 )
1478 ||
1479 (aligned &&
1480 (PL_origargv[i] > s &&
1481 PL_origargv[i] <=
1482 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1483 )
1484 {
1485 s = PL_origargv[i];
1486 while (*s) s++;
1487 }
1488 else
1489 break;
54bfe034 1490 }
54bfe034 1491 }
3cb9023d 1492 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1493 if (s && PL_origenviron) {
43c32782
JH
1494 if ((PL_origenviron[0] == s + 1
1495#ifdef OS2
1496 || (PL_origenviron[0] == s + 9 && (s += 8))
1497#endif
1498 )
1499 ||
1500 (aligned &&
1501 (PL_origenviron[0] > s &&
1502 PL_origenviron[0] <=
1503 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1504 )
1505 {
1506#ifndef OS2
1507 s = PL_origenviron[0];
1508 while (*s) s++;
1509#endif
1510 my_setenv("NoNe SuCh", Nullch);
1511 /* Force copy of environment. */
1512 for (i = 1; PL_origenviron[i]; i++) {
1513 if (PL_origenviron[i] == s + 1
1514 ||
1515 (aligned &&
1516 (PL_origenviron[i] > s &&
1517 PL_origenviron[i] <=
1518 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1519 )
1520 {
1521 s = PL_origenviron[i];
1522 while (*s) s++;
1523 }
1524 else
1525 break;
54bfe034 1526 }
43c32782 1527 }
54bfe034 1528 }
2d2af554 1529 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1530 }
1531
3280af22 1532 if (PL_do_undump) {
a0d0e21e
LW
1533
1534 /* Come here if running an undumped a.out. */
1535
3280af22
NIS
1536 PL_origfilename = savepv(argv[0]);
1537 PL_do_undump = FALSE;
a0d0e21e 1538 cxstack_ix = -1; /* start label stack again */
748a9306 1539 init_ids();
b7975bdd
NC
1540 assert (!PL_tainted);
1541 TAINT;
1542 S_set_caret_X(aTHX);
1543 TAINT_NOT;
a0d0e21e
LW
1544 init_postdump_symbols(argc,argv,env);
1545 return 0;
1546 }
1547
3280af22 1548 if (PL_main_root) {
3280af22
NIS
1549 op_free(PL_main_root);
1550 PL_main_root = Nullop;
ff0cee69 1551 }
3280af22
NIS
1552 PL_main_start = Nullop;
1553 SvREFCNT_dec(PL_main_cv);
1554 PL_main_cv = Nullcv;
79072805 1555
3280af22
NIS
1556 time(&PL_basetime);
1557 oldscope = PL_scopestack_ix;
599cee73 1558 PL_dowarn = G_WARN_OFF;
f86702cc 1559
14dd3ad8 1560 JMPENV_PUSH(ret);
6224f72b 1561 switch (ret) {
312caa8e 1562 case 0:
14dd3ad8 1563 parse_body(env,xsinit);
7d30b5c4
GS
1564 if (PL_checkav)
1565 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1566 ret = 0;
1567 break;
6224f72b
GS
1568 case 1:
1569 STATUS_ALL_FAILURE;
1570 /* FALL THROUGH */
1571 case 2:
1572 /* my_exit() was called */
3280af22 1573 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1574 LEAVE;
1575 FREETMPS;
3280af22 1576 PL_curstash = PL_defstash;
7d30b5c4
GS
1577 if (PL_checkav)
1578 call_list(oldscope, PL_checkav);
37038d91 1579 ret = STATUS_EXIT;
14dd3ad8 1580 break;
6224f72b 1581 case 3:
bf49b057 1582 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1583 ret = 1;
1584 break;
6224f72b 1585 }
14dd3ad8
GS
1586 JMPENV_POP;
1587 return ret;
1588}
1589
312caa8e 1590STATIC void *
14dd3ad8 1591S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1592{
27da23d5 1593 dVAR;
312caa8e 1594 int argc = PL_origargc;
8f42b153 1595 char **argv = PL_origargv;
e1ec3a88 1596 const char *scriptname = NULL;
312caa8e 1597 VOL bool dosearch = FALSE;
e1ec3a88 1598 const char *validarg = "";
312caa8e
CS
1599 register SV *sv;
1600 register char *s;
e1ec3a88 1601 const char *cddir = Nullch;
ab019eaa 1602#ifdef USE_SITECUSTOMIZE
20ef40cf 1603 bool minus_f = FALSE;
ab019eaa 1604#endif
312caa8e 1605
ae3f3efd
PS
1606 PL_fdscript = -1;
1607 PL_suidscript = -1;
3280af22 1608 sv_setpvn(PL_linestr,"",0);
396482e1 1609 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1610 SAVEFREESV(sv);
1611 init_main_stash();
54310121 1612
6224f72b
GS
1613 for (argc--,argv++; argc > 0; argc--,argv++) {
1614 if (argv[0][0] != '-' || !argv[0][1])
1615 break;
1616#ifdef DOSUID
1617 if (*validarg)
1618 validarg = " PHOOEY ";
1619 else
1620 validarg = argv[0];
ae3f3efd
PS
1621 /*
1622 * Can we rely on the kernel to start scripts with argv[1] set to
1623 * contain all #! line switches (the whole line)? (argv[0] is set to
1624 * the interpreter name, argv[2] to the script name; argv[3] and
1625 * above may contain other arguments.)
1626 */
13281fa4 1627#endif
6224f72b
GS
1628 s = argv[0]+1;
1629 reswitch:
1630 switch (*s) {
729a02f2 1631 case 'C':
1d5472a9
GS
1632#ifndef PERL_STRICT_CR
1633 case '\r':
1634#endif
6224f72b
GS
1635 case ' ':
1636 case '0':
1637 case 'F':
1638 case 'a':
1639 case 'c':
1640 case 'd':
1641 case 'D':
1642 case 'h':
1643 case 'i':
1644 case 'l':
1645 case 'M':
1646 case 'm':
1647 case 'n':
1648 case 'p':
1649 case 's':
1650 case 'u':
1651 case 'U':
1652 case 'v':
599cee73
PM
1653 case 'W':
1654 case 'X':
6224f72b 1655 case 'w':
06492da6 1656 case 'A':
155aba94 1657 if ((s = moreswitches(s)))
6224f72b
GS
1658 goto reswitch;
1659 break;
33b78306 1660
1dbad523 1661 case 't':
22f7c9c9 1662 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1663 if( !PL_tainting ) {
1664 PL_taint_warn = TRUE;
1665 PL_tainting = TRUE;
1666 }
1667 s++;
1668 goto reswitch;
6224f72b 1669 case 'T':
22f7c9c9 1670 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1671 PL_tainting = TRUE;
317ea90d 1672 PL_taint_warn = FALSE;
6224f72b
GS
1673 s++;
1674 goto reswitch;
f86702cc 1675
bc9b29db
RH
1676 case 'E':
1677 PL_minus_E = TRUE;
1678 /* FALL THROUGH */
6224f72b 1679 case 'e':
bf4acbe4
GS
1680#ifdef MACOS_TRADITIONAL
1681 /* ignore -e for Dev:Pseudo argument */
1682 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1683 break;
bf4acbe4 1684#endif
ae3f3efd 1685 forbid_setid("-e");
3280af22 1686 if (!PL_e_script) {
396482e1 1687 PL_e_script = newSVpvs("");
0cb96387 1688 filter_add(read_e_script, NULL);
6224f72b
GS
1689 }
1690 if (*++s)
3280af22 1691 sv_catpv(PL_e_script, s);
6224f72b 1692 else if (argv[1]) {
3280af22 1693 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1694 argc--,argv++;
1695 }
1696 else
bc9b29db 1697 Perl_croak(aTHX_ "No code specified for -%c", *s);
396482e1 1698 sv_catpvs(PL_e_script, "\n");
6224f72b 1699 break;
afe37c7d 1700
20ef40cf 1701 case 'f':
f5542d3a 1702#ifdef USE_SITECUSTOMIZE
20ef40cf 1703 minus_f = TRUE;
f5542d3a 1704#endif
20ef40cf
GA
1705 s++;
1706 goto reswitch;
1707
6224f72b
GS
1708 case 'I': /* -I handled both here and in moreswitches() */
1709 forbid_setid("-I");
1710 if (!*++s && (s=argv[1]) != Nullch) {
1711 argc--,argv++;
1712 }
6224f72b 1713 if (s && *s) {
0df16ed7 1714 STRLEN len = strlen(s);
aec46f14 1715 const char * const p = savepvn(s, len);
88fe16b2 1716 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1717 sv_catpvs(sv, "-I");
0df16ed7 1718 sv_catpvn(sv, p, len);
396482e1 1719 sv_catpvs(sv, " ");
6224f72b 1720 Safefree(p);
0df16ed7
GS
1721 }
1722 else
a67e862a 1723 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1724 break;
1725 case 'P':
1726 forbid_setid("-P");
3280af22 1727 PL_preprocess = TRUE;
6224f72b
GS
1728 s++;
1729 goto reswitch;
1730 case 'S':
1731 forbid_setid("-S");
1732 dosearch = TRUE;
1733 s++;
1734 goto reswitch;
1735 case 'V':
7edfd0ef
NC
1736 {
1737 SV *opts_prog;
1738
1739 if (!PL_preambleav)
1740 PL_preambleav = newAV();
1741 av_push(PL_preambleav,
396482e1 1742 newSVpvs("use Config;"));
7edfd0ef
NC
1743 if (*++s != ':') {
1744 STRLEN opts;
1745
396482e1 1746 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1747#ifdef VMS
396482e1 1748 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1749#else
396482e1 1750 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1751#endif
7edfd0ef 1752 opts = SvCUR(opts_prog);
efcaa95b 1753
9cd7d3f2 1754 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1755# ifdef DEBUGGING
e2e4dbf1 1756 " DEBUGGING"
6224f72b 1757# endif
4f185743
NC
1758# ifdef DEBUG_LEAKING_SCALARS
1759 " DEBUG_LEAKING_SCALARS"
1760# endif
85e1fcb9 1761# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1762 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1763# endif
1764# ifdef FAKE_THREADS
e2e4dbf1 1765 " FAKE_THREADS"
85e1fcb9 1766# endif
6224f72b 1767# ifdef MULTIPLICITY
e2e4dbf1 1768 " MULTIPLICITY"
6224f72b 1769# endif
85e1fcb9 1770# ifdef MYMALLOC
e2e4dbf1 1771 " MYMALLOC"
85e1fcb9 1772# endif
3bcf5ed8
SP
1773# ifdef NO_MATHOMS
1774 " NO_MATHOMS"
1775# endif
85e1fcb9 1776# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1777 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1778# endif
1779# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1780 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1781# endif
1782# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1783 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1784# endif
1785# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1786 " PERL_IMPLICIT_SYS"
85e1fcb9
SH
1787# endif
1788# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1789 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1790# endif
1791# ifdef PERL_NEED_APPCTX
e2e4dbf1 1792 " PERL_NEED_APPCTX"
85e1fcb9
SH
1793# endif
1794# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1795 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1796# endif
1797# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1798 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1799# endif
9c0a4d5d
DM
1800# ifdef PERL_TRACK_MEMPOOL
1801 " PERL_TRACK_MEMPOOL"
1802# endif
417cd4a8
SP
1803# ifdef PERL_USE_SAFE_PUTENV
1804 " PERL_USE_SAFE_PUTENV"
1805# endif
ca0c25f6
NC
1806#ifdef PERL_USES_PL_PIDSTATUS
1807 " PERL_USES_PL_PIDSTATUS"
1808#endif
85e1fcb9 1809# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1810 " PL_OP_SLAB_ALLOC"
85e1fcb9 1811# endif
a0158404
NC
1812# ifdef SPRINTF_RETURNS_STRLEN
1813 " SPRINTF_RETURNS_STRLEN"
1814# endif
85e1fcb9 1815# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1816 " THREADS_HAVE_PIDS"
85e1fcb9 1817# endif
4d1ff10f 1818# ifdef USE_5005THREADS
e2e4dbf1 1819 " USE_5005THREADS"
b363f7ed 1820# endif
85e1fcb9 1821# ifdef USE_64_BIT_ALL
e2e4dbf1 1822 " USE_64_BIT_ALL"
ac5e8965 1823# endif
10cc9d2a 1824# ifdef USE_64_BIT_INT
e2e4dbf1 1825 " USE_64_BIT_INT"
10cc9d2a 1826# endif
85e1fcb9 1827# ifdef USE_ITHREADS
e2e4dbf1 1828 " USE_ITHREADS"
85e1fcb9
SH
1829# endif
1830# ifdef USE_LARGE_FILES
e2e4dbf1 1831 " USE_LARGE_FILES"
ac5e8965
JH
1832# endif
1833# ifdef USE_LONG_DOUBLE
e2e4dbf1 1834 " USE_LONG_DOUBLE"
ac5e8965 1835# endif
85e1fcb9 1836# ifdef USE_PERLIO
e2e4dbf1 1837 " USE_PERLIO"
53430762 1838# endif
85e1fcb9 1839# ifdef USE_REENTRANT_API
e2e4dbf1 1840 " USE_REENTRANT_API"
85e1fcb9
SH
1841# endif
1842# ifdef USE_SFIO
e2e4dbf1 1843 " USE_SFIO"
ac5e8965 1844# endif
20ef40cf 1845# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1846 " USE_SITECUSTOMIZE"
20ef40cf 1847# endif
85e1fcb9 1848# ifdef USE_SOCKS
e2e4dbf1 1849 " USE_SOCKS"
b363f7ed 1850# endif
e2e4dbf1 1851 );
efcaa95b 1852
7edfd0ef
NC
1853 while (SvCUR(opts_prog) > opts+76) {
1854 /* find last space after "options: " and before col 76
1855 */
efcaa95b 1856
7edfd0ef 1857 const char *space;
c4420975 1858 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1859 const char c = pv[opts+76];
1860 pv[opts+76] = '\0';
1861 space = strrchr(pv+opts+26, ' ');
1862 pv[opts+76] = c;
1863 if (!space) break; /* "Can't happen" */
efcaa95b 1864
7edfd0ef 1865 /* break the line before that space */
efcaa95b 1866
7edfd0ef 1867 opts = space - pv;
89529cee 1868 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1869 STR_WITH_LEN("\\n "));
7edfd0ef 1870 }
efcaa95b 1871
396482e1 1872 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1873
6224f72b 1874#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1875 if (LOCAL_PATCH_COUNT > 0) {
1876 int i;
396482e1 1877 sv_catpvs(opts_prog,
7edfd0ef
NC
1878 "\" Locally applied patches:\\n\",");
1879 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1880 if (PL_localpatches[i])
1881 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1882 0, PL_localpatches[i], 0);
1883 }
6224f72b 1884 }
6224f72b 1885#endif
7edfd0ef
NC
1886 Perl_sv_catpvf(aTHX_ opts_prog,
1887 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1888#ifdef __DATE__
1889# ifdef __TIME__
7edfd0ef
NC
1890 Perl_sv_catpvf(aTHX_ opts_prog,
1891 ",\" Compiled at %s %s\\n\"",__DATE__,
1892 __TIME__);
6224f72b 1893# else
7edfd0ef
NC
1894 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1895 __DATE__);
6224f72b
GS
1896# endif
1897#endif
396482e1 1898 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1899 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1900 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1901#ifdef __CYGWIN__
396482e1 1902 sv_catpvs(opts_prog,
7edfd0ef 1903 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1904#endif
396482e1 1905 sv_catpvs(opts_prog,
7edfd0ef
NC
1906 "print \" \\%ENV:\\n @env\\n\" if @env;"
1907 "print \" \\@INC:\\n @INC\\n\";");
1908 }
1909 else {
1910 ++s;
1911 opts_prog = Perl_newSVpvf(aTHX_
1912 "Config::config_vars(qw%c%s%c)",
1913 0, s, 0);
1914 s += strlen(s);
1915 }
1916 av_push(PL_preambleav, opts_prog);
1917 /* don't look for script or read stdin */
1918 scriptname = BIT_BUCKET;
1919 goto reswitch;
6224f72b 1920 }
6224f72b 1921 case 'x':
3280af22 1922 PL_doextract = TRUE;
6224f72b
GS
1923 s++;
1924 if (*s)
f4c556ac 1925 cddir = s;
6224f72b
GS
1926 break;
1927 case 0:
1928 break;
1929 case '-':
1930 if (!*++s || isSPACE(*s)) {
1931 argc--,argv++;
1932 goto switch_end;
1933 }
1934 /* catch use of gnu style long options */
1935 if (strEQ(s, "version")) {
dd374669 1936 s = (char *)"v";
6224f72b
GS
1937 goto reswitch;
1938 }
1939 if (strEQ(s, "help")) {
dd374669 1940 s = (char *)"h";
6224f72b
GS
1941 goto reswitch;
1942 }
1943 s--;
1944 /* FALL THROUGH */
1945 default:
cea2e8a9 1946 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1947 }
1948 }
6224f72b 1949 switch_end:
54310121 1950
f675dbe5
CB
1951 if (
1952#ifndef SECURE_INTERNAL_GETENV
1953 !PL_tainting &&
1954#endif
cf756827 1955 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1956 {
e1ec3a88 1957 const char *popt = s;
74288ac8
GS
1958 while (isSPACE(*s))
1959 s++;
317ea90d 1960 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1961 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1962 PL_tainting = TRUE;
317ea90d
MS
1963 PL_taint_warn = FALSE;
1964 }
74288ac8 1965 else {
cf756827 1966 char *popt_copy = Nullch;
74288ac8 1967 while (s && *s) {
4ea8f8fb 1968 char *d;
74288ac8
GS
1969 while (isSPACE(*s))
1970 s++;
1971 if (*s == '-') {
1972 s++;
1973 if (isSPACE(*s))
1974 continue;
1975 }
4ea8f8fb 1976 d = s;
74288ac8
GS
1977 if (!*s)
1978 break;
e4af53b0 1979 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 1980 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1981 while (++s && *s) {
1982 if (isSPACE(*s)) {
cf756827
GS
1983 if (!popt_copy) {
1984 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1985 s = popt_copy + (s - popt);
1986 d = popt_copy + (d - popt);
1987 }
4ea8f8fb
MS
1988 *s++ = '\0';
1989 break;
1990 }
1991 }
1c4db469 1992 if (*d == 't') {
317ea90d
MS
1993 if( !PL_tainting ) {
1994 PL_taint_warn = TRUE;
1995 PL_tainting = TRUE;
1996 }
1c4db469
RGS
1997 } else {
1998 moreswitches(d);
1999 }
6224f72b 2000 }
6224f72b
GS
2001 }
2002 }
a0d0e21e 2003
20ef40cf
GA
2004#ifdef USE_SITECUSTOMIZE
2005 if (!minus_f) {
2006 if (!PL_preambleav)
2007 PL_preambleav = newAV();
2008 av_unshift(PL_preambleav, 1);
2009 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
2010 }
2011#endif
2012
317ea90d
MS
2013 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
2014 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
2015 }
2016
6224f72b
GS
2017 if (!scriptname)
2018 scriptname = argv[0];
3280af22 2019 if (PL_e_script) {
6224f72b
GS
2020 argc++,argv--;
2021 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2022 }
2023 else if (scriptname == Nullch) {
2024#ifdef MSDOS
2025 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2026 moreswitches("h");
2027#endif
2028 scriptname = "-";
2029 }
2030
b7975bdd
NC
2031 /* Set $^X early so that it can be used for relocatable paths in @INC */
2032 assert (!PL_tainted);
2033 TAINT;
2034 S_set_caret_X(aTHX);
2035 TAINT_NOT;
6224f72b
GS
2036 init_perllib();
2037
c5cccb17 2038 open_script(scriptname,dosearch,sv);
6224f72b 2039
c5cccb17 2040 validate_suid(validarg, scriptname);
6224f72b 2041
64ca3a65 2042#ifndef PERL_MICRO
0b5b802d
GS
2043#if defined(SIGCHLD) || defined(SIGCLD)
2044 {
2045#ifndef SIGCHLD
2046# define SIGCHLD SIGCLD
2047#endif
2048 Sighandler_t sigstate = rsignal_state(SIGCHLD);
8aad04aa 2049 if (sigstate == (Sighandler_t) SIG_IGN) {
0b5b802d 2050 if (ckWARN(WARN_SIGNAL))
9014280d 2051 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS
2052 "Can't ignore signal CHLD, forcing to default");
2053 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2054 }
2055 }
2056#endif
64ca3a65 2057#endif
0b5b802d 2058
bf4acbe4
GS
2059#ifdef MACOS_TRADITIONAL
2060 if (PL_doextract || gMacPerl_AlwaysExtract) {
2061#else
f4c556ac 2062 if (PL_doextract) {
bf4acbe4 2063#endif
6224f72b 2064 find_beginning();
dd374669 2065 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
f4c556ac
GS
2066 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2067
2068 }
6224f72b 2069
3280af22
NIS
2070 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
2071 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2072 CvUNIQUE_on(PL_compcv);
2073
dd2155a4 2074 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 2075#ifdef USE_5005THREADS
533c011a 2076 CvOWNER(PL_compcv) = 0;
a02a5408 2077 Newx(CvMUTEXP(PL_compcv), 1, perl_mutex);
533c011a 2078 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 2079#endif /* USE_5005THREADS */
6224f72b 2080
0c4f7ff0 2081 boot_core_PerlIO();
6224f72b 2082 boot_core_UNIVERSAL();
09bef843 2083 boot_core_xsutils();
6224f72b
GS
2084
2085 if (xsinit)
acfe0abc 2086 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2087#ifndef PERL_MICRO
d0d72822 2088#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2089 init_os_extras();
6224f72b 2090#endif
64ca3a65 2091#endif
6224f72b 2092
29209bc5 2093#ifdef USE_SOCKS
1b9c9cf5
DH
2094# ifdef HAS_SOCKS5_INIT
2095 socks5_init(argv[0]);
2096# else
29209bc5 2097 SOCKSinit(argv[0]);
1b9c9cf5 2098# endif
ac27b0f5 2099#endif
29209bc5 2100
6224f72b
GS
2101 init_predump_symbols();
2102 /* init_postdump_symbols not currently designed to be called */
2103 /* more than once (ENV isn't cleared first, for example) */
2104 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2105 if (!PL_do_undump)
6224f72b
GS
2106 init_postdump_symbols(argc,argv,env);
2107
27da23d5
JH
2108 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2109 * or explicitly in some platforms.
085a54d9 2110 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2111 * look like the user wants to use UTF-8. */
a0fd4948 2112#if defined(__SYMBIAN32__)
27da23d5
JH
2113 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2114#endif
06e66572
JH
2115 if (PL_unicode) {
2116 /* Requires init_predump_symbols(). */
a05d7ebb 2117 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2118 IO* io;
2119 PerlIO* fp;
2120 SV* sv;
2121
a05d7ebb 2122 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2123 * and the default open disciplines. */
a05d7ebb
JH
2124 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2125 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2126 (fp = IoIFP(io)))
2127 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2128 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2129 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2130 (fp = IoOFP(io)))
2131 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2132 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2133 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2134 (fp = IoOFP(io)))
2135 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2136 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2137 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
2138 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2139 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2140 if (in) {
2141 if (out)
2142 sv_setpvn(sv, ":utf8\0:utf8", 11);
2143 else
2144 sv_setpvn(sv, ":utf8\0", 6);
2145 }
2146 else if (out)
2147 sv_setpvn(sv, "\0:utf8", 6);
2148 SvSETMAGIC(sv);
2149 }
b310b053
JH
2150 }
2151 }
2152
4ffa73a3
JH
2153 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2154 if (strEQ(s, "unsafe"))
2155 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2156 else if (strEQ(s, "safe"))
2157 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2158 else
2159 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2160 }
2161
6224f72b
GS
2162 init_lexer();
2163
2164 /* now parse the script */
2165
93189314 2166 SETERRNO(0,SS_NORMAL);
3280af22 2167 PL_error_count = 0;
bf4acbe4
GS
2168#ifdef MACOS_TRADITIONAL
2169 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2170 if (PL_minus_c)
2171 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2172 else {
2173 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2174 MacPerl_MPWFileName(PL_origfilename));
2175 }
2176 }
2177#else
3280af22
NIS
2178 if (yyparse() || PL_error_count) {
2179 if (PL_minus_c)
cea2e8a9 2180 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2181 else {
cea2e8a9 2182 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2183 PL_origfilename);
6224f72b
GS
2184 }
2185 }
bf4acbe4 2186#endif
57843af0 2187 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2188 PL_curstash = PL_defstash;
2189 PL_preprocess = FALSE;
2190 if (PL_e_script) {
2191 SvREFCNT_dec(PL_e_script);
2192 PL_e_script = Nullsv;
6224f72b
GS
2193 }
2194
3280af22 2195 if (PL_do_undump)
6224f72b
GS
2196 my_unexec();
2197
57843af0
GS
2198 if (isWARN_ONCE) {
2199 SAVECOPFILE(PL_curcop);
2200 SAVECOPLINE(PL_curcop);
3280af22 2201 gv_check(PL_defstash);
57843af0 2202 }
6224f72b
GS
2203
2204 LEAVE;
2205 FREETMPS;
2206
2207#ifdef MYMALLOC
2208 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2209 dump_mstats("after compilation:");
2210#endif
2211
2212 ENTER;
3280af22 2213 PL_restartop = 0;
312caa8e 2214 return NULL;
6224f72b
GS
2215}
2216
954c1994
GS
2217/*
2218=for apidoc perl_run
2219
2220Tells a Perl interpreter to run. See L<perlembed>.
2221
2222=cut
2223*/
2224
6224f72b 2225int
0cb96387 2226perl_run(pTHXx)
6224f72b 2227{
97aff369 2228 dVAR;
6224f72b 2229 I32 oldscope;
14dd3ad8 2230 int ret = 0;
db36c5a1 2231 dJMPENV;
6224f72b 2232
9d4ba2ae
AL
2233 PERL_UNUSED_ARG(my_perl);
2234
3280af22 2235 oldscope = PL_scopestack_ix;
96e176bf
CL
2236#ifdef VMS
2237 VMSISH_HUSHED = 0;
2238#endif
6224f72b 2239
14dd3ad8 2240 JMPENV_PUSH(ret);
6224f72b
GS
2241 switch (ret) {
2242 case 1:
2243 cxstack_ix = -1; /* start context stack again */
312caa8e 2244 goto redo_body;
14dd3ad8 2245 case 0: /* normal completion */
14dd3ad8
GS
2246 redo_body:
2247 run_body(oldscope);
14dd3ad8
GS
2248 /* FALL THROUGH */
2249 case 2: /* my_exit() */
3280af22 2250 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2251 LEAVE;
2252 FREETMPS;
3280af22 2253 PL_curstash = PL_defstash;
3a1ee7e8 2254 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2255 PL_endav && !PL_minus_c)
2256 call_list(oldscope, PL_endav);
6224f72b
GS
2257#ifdef MYMALLOC
2258 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2259 dump_mstats("after execution: ");
2260#endif
37038d91 2261 ret = STATUS_EXIT;
14dd3ad8 2262 break;
6224f72b 2263 case 3:
312caa8e
CS
2264 if (PL_restartop) {
2265 POPSTACK_TO(PL_mainstack);
2266 goto redo_body;
6224f72b 2267 }
bf49b057 2268 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2269 FREETMPS;
14dd3ad8
GS
2270 ret = 1;
2271 break;
6224f72b
GS
2272 }
2273
14dd3ad8
GS
2274 JMPENV_POP;
2275 return ret;
312caa8e
CS
2276}
2277
14dd3ad8 2278
dd374669 2279STATIC void
14dd3ad8
GS
2280S_run_body(pTHX_ I32 oldscope)
2281{
97aff369 2282 dVAR;
6224f72b 2283 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2284 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2285
3280af22 2286 if (!PL_restartop) {
6224f72b 2287 DEBUG_x(dump_all());
cf2782cd 2288#ifdef DEBUGGING
ecae49c0
NC
2289 if (!DEBUG_q_TEST)
2290 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2291#endif
b900a521
JH
2292 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2293 PTR2UV(thr)));
6224f72b 2294
3280af22 2295 if (PL_minus_c) {
bf4acbe4 2296#ifdef MACOS_TRADITIONAL
e69a2255
JH
2297 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2298 (gMacPerl_ErrorFormat ? "# " : ""),
2299 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2300#else
bf49b057 2301 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2302#endif
6224f72b
GS
2303 my_exit(0);
2304 }
3280af22 2305 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2306 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2307 if (PL_initav)
2308 call_list(oldscope, PL_initav);
6224f72b
GS
2309 }
2310
2311 /* do it */
2312
3280af22 2313 if (PL_restartop) {
533c011a 2314 PL_op = PL_restartop;
3280af22 2315 PL_restartop = 0;
cea2e8a9 2316 CALLRUNOPS(aTHX);
6224f72b 2317 }
3280af22
NIS
2318 else if (PL_main_start) {
2319 CvDEPTH(PL_main_cv) = 1;
533c011a 2320 PL_op = PL_main_start;
cea2e8a9 2321 CALLRUNOPS(aTHX);
6224f72b 2322 }
f6b3007c
JH
2323 my_exit(0);
2324 /* NOTREACHED */
6224f72b
GS
2325}
2326
954c1994 2327/*
ccfc67b7
JH
2328=head1 SV Manipulation Functions
2329
954c1994
GS
2330=for apidoc p||get_sv
2331
2332Returns the SV of the specified Perl scalar. If C<create> is set and the
2333Perl variable does not exist then it will be created. If C<create> is not
2334set and the variable does not exist then NULL is returned.
2335
2336=cut
2337*/
2338
6224f72b 2339SV*
864dbfa3 2340Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2341{
2342 GV *gv;
4d1ff10f 2343#ifdef USE_5005THREADS
6224f72b
GS
2344 if (name[1] == '\0' && !isALPHA(name[0])) {
2345 PADOFFSET tmp = find_threadsv(name);
411caa50 2346 if (tmp != NOT_IN_PAD)
6224f72b 2347 return THREADSV(tmp);
6224f72b 2348 }
4d1ff10f 2349#endif /* USE_5005THREADS */
6224f72b
GS
2350 gv = gv_fetchpv(name, create, SVt_PV);
2351 if (gv)
2352 return GvSV(gv);
2353 return Nullsv;
2354}
2355
954c1994 2356/*
ccfc67b7
JH
2357=head1 Array Manipulation Functions
2358
954c1994
GS
2359=for apidoc p||get_av
2360
2361Returns the AV of the specified Perl array. If C<create> is set and the
2362Perl variable does not exist then it will be created. If C<create> is not
2363set and the variable does not exist then NULL is returned.
2364
2365=cut
2366*/
2367
6224f72b 2368AV*
864dbfa3 2369Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2370{
c4420975 2371 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2372 if (create)
2373 return GvAVn(gv);
2374 if (gv)
2375 return GvAV(gv);
7d49f689 2376 return NULL;
6224f72b
GS
2377}
2378
954c1994 2379/*
ccfc67b7
JH
2380=head1 Hash Manipulation Functions
2381
954c1994
GS
2382=for apidoc p||get_hv
2383
2384Returns the HV of the specified Perl hash. If C<create> is set and the
2385Perl variable does not exist then it will be created. If C<create> is not
2386set and the variable does not exist then NULL is returned.
2387
2388=cut
2389*/
2390
6224f72b 2391HV*
864dbfa3 2392Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2393{
890ce7af 2394 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2395 if (create)
2396 return GvHVn(gv);
2397 if (gv)
2398 return GvHV(gv);
5c284bb0 2399 return NULL;
a0d0e21e
LW
2400}
2401
954c1994 2402/*
ccfc67b7
JH
2403=head1 CV Manipulation Functions
2404
954c1994
GS
2405=for apidoc p||get_cv
2406
2407Returns the CV of the specified Perl subroutine. If C<create> is set and
2408the Perl subroutine does not exist then it will be declared (which has the
2409same effect as saying C<sub name;>). If C<create> is not set and the
2410subroutine does not exist then NULL is returned.
2411
2412=cut
2413*/
2414
a0d0e21e 2415CV*
864dbfa3 2416Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2417{
c4420975 2418 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2419 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2420 /* XXX this is probably not what they think they're getting.
2421 * It has the same effect as "sub name;", i.e. just a forward
2422 * declaration! */
8ebc5c01 2423 if (create && !GvCVu(gv))
774d564b 2424 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2425 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 2426 Nullop,
a0d0e21e
LW
2427 Nullop);
2428 if (gv)
8ebc5c01 2429 return GvCVu(gv);
a0d0e21e
LW
2430 return Nullcv;
2431}
2432
79072805
LW
2433/* Be sure to refetch the stack pointer after calling these routines. */
2434
954c1994 2435/*
ccfc67b7
JH
2436
2437=head1 Callback Functions
2438
954c1994
GS
2439=for apidoc p||call_argv
2440
2441Performs a callback to the specified Perl sub. See L<perlcall>.
2442
2443=cut
2444*/
2445
a0d0e21e 2446I32
8f42b153 2447Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2448
8ac85365
NIS
2449 /* See G_* flags in cop.h */
2450 /* null terminated arg list */
8990e307 2451{
97aff369 2452 dVAR;
a0d0e21e 2453 dSP;
8990e307 2454
924508f0 2455 PUSHMARK(SP);
a0d0e21e 2456 if (argv) {
8990e307 2457 while (*argv) {
a0d0e21e 2458 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2459 argv++;
2460 }
a0d0e21e 2461 PUTBACK;
8990e307 2462 }
864dbfa3 2463 return call_pv(sub_name, flags);
8990e307
LW
2464}
2465
954c1994
GS
2466/*
2467=for apidoc p||call_pv
2468
2469Performs a callback to the specified Perl sub. See L<perlcall>.
2470
2471=cut
2472*/
2473
a0d0e21e 2474I32
864dbfa3 2475Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2476 /* name of the subroutine */
2477 /* See G_* flags in cop.h */
a0d0e21e 2478{
864dbfa3 2479 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2480}
2481
954c1994
GS
2482/*
2483=for apidoc p||call_method
2484
2485Performs a callback to the specified Perl method. The blessed object must
2486be on the stack. See L<perlcall>.
2487
2488=cut
2489*/
2490
a0d0e21e 2491I32
864dbfa3 2492Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2493 /* name of the subroutine */
2494 /* See G_* flags in cop.h */
a0d0e21e 2495{
968b3946 2496 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2497}
2498
2499/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2500/*
2501=for apidoc p||call_sv
2502
2503Performs a callback to the Perl sub whose name is in the SV. See
2504L<perlcall>.
2505
2506=cut
2507*/
2508
a0d0e21e 2509I32
864dbfa3 2510Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2511 /* See G_* flags in cop.h */
a0d0e21e 2512{
27da23d5 2513 dVAR; dSP;
a0d0e21e 2514 LOGOP myop; /* fake syntax tree node */
968b3946 2515 UNOP method_op;
aa689395 2516 I32 oldmark;
13689cfe 2517 volatile I32 retval = 0;
a0d0e21e 2518 I32 oldscope;
54310121 2519 bool oldcatch = CATCH_GET;
6224f72b 2520 int ret;
c4420975 2521 OP* const oldop = PL_op;
db36c5a1 2522 dJMPENV;
1e422769 2523
a0d0e21e
LW
2524 if (flags & G_DISCARD) {
2525 ENTER;
2526 SAVETMPS;
2527 }
2528
aa689395 2529 Zero(&myop, 1, LOGOP);
54310121 2530 myop.op_next = Nullop;
f51d4af5 2531 if (!(flags & G_NOARGS))
aa689395 2532 myop.op_flags |= OPf_STACKED;
54310121
PP
2533 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2534 (flags & G_ARRAY) ? OPf_WANT_LIST :
2535 OPf_WANT_SCALAR);
462e5cf6 2536 SAVEOP();
533c011a 2537 PL_op = (OP*)&myop;
aa689395 2538
3280af22
NIS
2539 EXTEND(PL_stack_sp, 1);
2540 *++PL_stack_sp = sv;
aa689395 2541 oldmark = TOPMARK;
3280af22 2542 oldscope = PL_scopestack_ix;
a0d0e21e 2543
3280af22 2544 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2545 /* Handle first BEGIN of -d. */
3280af22 2546 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2547 /* Try harder, since this may have been a sighandler, thus
2548 * curstash may be meaningless. */
3280af22 2549 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2550 && !(flags & G_NODEBUG))
533c011a 2551 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2552
968b3946
GS
2553 if (flags & G_METHOD) {
2554 Zero(&method_op, 1, UNOP);
2555 method_op.op_next = PL_op;
2556 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2557 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2558 PL_op = (OP*)&method_op;
968b3946
GS
2559 }
2560
312caa8e 2561 if (!(flags & G_EVAL)) {
0cdb2077 2562 CATCH_SET(TRUE);
14dd3ad8 2563 call_body((OP*)&myop, FALSE);
312caa8e 2564 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2565 CATCH_SET(oldcatch);
312caa8e
CS
2566 }
2567 else {
d78bda3d 2568 myop.op_other = (OP*)&myop;
3280af22 2569 PL_markstack_ptr--;
4633a7c4
LW
2570 /* we're trying to emulate pp_entertry() here */
2571 {
c09156bb 2572 register PERL_CONTEXT *cx;
f54cb97a 2573 const I32 gimme = GIMME_V;
ac27b0f5 2574
4633a7c4
LW
2575 ENTER;
2576 SAVETMPS;
ac27b0f5 2577
1d76a5c3 2578 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2579 PUSHEVAL(cx, 0, 0);
533c011a 2580 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2581
faef0170 2582 PL_in_eval = EVAL_INEVAL;
4633a7c4 2583 if (flags & G_KEEPERR)
faef0170 2584 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2585 else
c69006e4 2586 sv_setpvn(ERRSV,"",0);
4633a7c4 2587 }
3280af22 2588 PL_markstack_ptr++;
a0d0e21e 2589
14dd3ad8 2590 JMPENV_PUSH(ret);
6224f72b
GS
2591 switch (ret) {
2592 case 0:
14dd3ad8
GS
2593 redo_body:
2594 call_body((OP*)&myop, FALSE);
312caa8e
CS
2595 retval = PL_stack_sp - (PL_stack_base + oldmark);
2596 if (!(flags & G_KEEPERR))
c69006e4 2597 sv_setpvn(ERRSV,"",0);
a0d0e21e 2598 break;
6224f72b 2599 case 1:
f86702cc 2600 STATUS_ALL_FAILURE;
a0d0e21e 2601 /* FALL THROUGH */
6224f72b 2602 case 2:
a0d0e21e 2603 /* my_exit() was called */
3280af22 2604 PL_curstash = PL_defstash;
a0d0e21e 2605 FREETMPS;
14dd3ad8 2606 JMPENV_POP;
cc3604b1 2607 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2608 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2609 my_exit_jump();
a0d0e21e 2610 /* NOTREACHED */
6224f72b 2611 case 3:
3280af22 2612 if (PL_restartop) {
533c011a 2613 PL_op = PL_restartop;
3280af22 2614 PL_restartop = 0;
312caa8e 2615 goto redo_body;
a0d0e21e 2616 }
3280af22 2617 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2618 if (flags & G_ARRAY)
2619 retval = 0;
2620 else {
2621 retval = 1;
3280af22 2622 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2623 }
312caa8e 2624 break;
a0d0e21e 2625 }
a0d0e21e 2626
3280af22 2627 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2628 SV **newsp;
2629 PMOP *newpm;
2630 I32 gimme;
c09156bb 2631 register PERL_CONTEXT *cx;
a0a2876f
LW
2632 I32 optype;
2633
2634 POPBLOCK(cx,newpm);
2635 POPEVAL(cx);
3280af22 2636 PL_curpm = newpm;
a0a2876f 2637 LEAVE;
9d4ba2ae
AL
2638 PERL_UNUSED_VAR(newsp);
2639 PERL_UNUSED_VAR(gimme);
2640 PERL_UNUSED_VAR(optype);
a0d0e21e 2641 }
14dd3ad8 2642 JMPENV_POP;
a0d0e21e 2643 }
1e422769 2644
a0d0e21e 2645 if (flags & G_DISCARD) {
3280af22 2646 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2647 retval = 0;
2648 FREETMPS;
2649 LEAVE;
2650 }
533c011a 2651 PL_op = oldop;
a0d0e21e
LW
2652 return retval;
2653}
2654
312caa8e 2655STATIC void
dd374669 2656S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2657{
97aff369 2658 dVAR;
312caa8e
CS
2659 if (PL_op == myop) {
2660 if (is_eval)
f807eda9 2661 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2662 else
f807eda9 2663 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2664 }
2665 if (PL_op)
cea2e8a9 2666 CALLRUNOPS(aTHX);
312caa8e
CS
2667}
2668
6e72f9df 2669/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2670
954c1994
GS
2671/*
2672=for apidoc p||eval_sv
2673
2674Tells Perl to C<eval> the string in the SV.
2675
2676=cut
2677*/
2678
a0d0e21e 2679I32
864dbfa3 2680Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2681
8ac85365 2682 /* See G_* flags in cop.h */
a0d0e21e 2683{
97aff369 2684 dVAR;
924508f0 2685 dSP;
a0d0e21e 2686 UNOP myop; /* fake syntax tree node */
8fa7f367 2687 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2688 volatile I32 retval = 0;
6224f72b 2689 int ret;
c4420975 2690 OP* const oldop = PL_op;
db36c5a1 2691 dJMPENV;
84902520 2692
4633a7c4
LW
2693 if (flags & G_DISCARD) {
2694 ENTER;
2695 SAVETMPS;
2696 }
2697
462e5cf6 2698 SAVEOP();
533c011a
NIS
2699 PL_op = (OP*)&myop;
2700 Zero(PL_op, 1, UNOP);
3280af22
NIS
2701 EXTEND(PL_stack_sp, 1);
2702 *++PL_stack_sp = sv;
79072805 2703
4633a7c4
LW
2704 if (!(flags & G_NOARGS))
2705 myop.op_flags = OPf_STACKED;
79072805 2706 myop.op_next = Nullop;
6e72f9df 2707 myop.op_type = OP_ENTEREVAL;
54310121
PP
2708 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2709 (flags & G_ARRAY) ? OPf_WANT_LIST :
2710 OPf_WANT_SCALAR);
6e72f9df
PP
2711 if (flags & G_KEEPERR)
2712 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2713
dedbcade
DM
2714 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2715 * before a PUSHEVAL, which corrupts the stack after a croak */
2716 TAINT_PROPER("eval_sv()");
2717
14dd3ad8 2718 JMPENV_PUSH(ret);
6224f72b
GS
2719 switch (ret) {
2720 case 0:
14dd3ad8
GS
2721 redo_body:
2722 call_body((OP*)&myop,TRUE);
312caa8e
CS
2723 retval = PL_stack_sp - (PL_stack_base + oldmark);
2724 if (!(flags & G_KEEPERR))
c69006e4 2725 sv_setpvn(ERRSV,"",0);
4633a7c4 2726 break;
6224f72b 2727 case 1:
f86702cc 2728 STATUS_ALL_FAILURE;
4633a7c4 2729 /* FALL THROUGH */
6224f72b 2730 case 2:
4633a7c4 2731 /* my_exit() was called */
3280af22 2732 PL_curstash = PL_defstash;
4633a7c4 2733 FREETMPS;
14dd3ad8 2734 JMPENV_POP;
cc3604b1 2735 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2736 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2737 my_exit_jump();
4633a7c4 2738 /* NOTREACHED */
6224f72b 2739 case 3:
3280af22 2740 if (PL_restartop) {
533c011a 2741 PL_op = PL_restartop;
3280af22 2742 PL_restartop = 0;
312caa8e 2743 goto redo_body;
4633a7c4 2744 }
3280af22 2745 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2746 if (flags & G_ARRAY)
2747 retval = 0;
2748 else {
2749 retval = 1;
3280af22 2750 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2751 }
312caa8e 2752 break;
4633a7c4
LW
2753 }
2754
14dd3ad8 2755 JMPENV_POP;
4633a7c4 2756 if (flags & G_DISCARD) {
3280af22 2757 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2758 retval = 0;
2759 FREETMPS;
2760 LEAVE;
2761 }
533c011a 2762 PL_op = oldop;
4633a7c4
LW
2763 return retval;
2764}
2765
954c1994
GS
2766/*
2767=for apidoc p||eval_pv
2768
2769Tells Perl to C<eval> the given string and return an SV* result.
2770
2771=cut
2772*/
2773
137443ea 2774SV*
864dbfa3 2775Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2776{
97aff369 2777 dVAR;
137443ea
PP
2778 dSP;
2779 SV* sv = newSVpv(p, 0);
2780
864dbfa3 2781 eval_sv(sv, G_SCALAR);
137443ea
PP
2782 SvREFCNT_dec(sv);
2783
2784 SPAGAIN;
2785 sv = POPs;
2786 PUTBACK;
2787
2d8e6c8d 2788 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2789 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2790 }
137443ea
PP
2791
2792 return sv;
2793}
2794
4633a7c4
LW
2795/* Require a module. */
2796
954c1994 2797/*
ccfc67b7
JH
2798=head1 Embedding Functions
2799
954c1994
GS
2800=for apidoc p||require_pv
2801
7d3fb230
BS
2802Tells Perl to C<require> the file named by the string argument. It is
2803analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2804implemented that way; consider using load_module instead.
954c1994 2805
7d3fb230 2806=cut */
954c1994 2807
4633a7c4 2808void
864dbfa3 2809Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2810{
97aff369 2811 dVAR;
d3acc0f7 2812 dSP;
97aff369 2813 SV* sv;
e788e7d3 2814 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2815 PUTBACK;
be41e5d9
NC
2816 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2817 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2818 SPAGAIN;
2819 POPSTACK;
79072805
LW
2820}
2821
79072805 2822void
e1ec3a88 2823Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2824{
c4420975 2825 register GV * const gv = gv_fetchpv(sym,TRUE, SVt_PV);
79072805 2826
c4420975 2827 if (gv)
14befaf4 2828 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2829}
2830
76e3520e 2831STATIC void
e1ec3a88 2832S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2833{
ab821d7f 2834 /* This message really ought to be max 23 lines.
75c72d73 2835 * Removed -h because the user already knows that option. Others? */
fb73857a 2836
27da23d5 2837 static const char * const usage_msg[] = {
aefc56c5
SF
2838"-0[octal] specify record separator (\\0, if no argument)",
2839"-A[mod][=pattern] activate all/given assertions",
2840"-a autosplit mode with -n or -p (splits $_ into @F)",
2841"-C[number/list] enables the listed Unicode features",
2842"-c check syntax only (runs BEGIN and CHECK blocks)",
2843"-d[:debugger] run program under debugger",
2844"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2845"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2846"-E program like -e, but enables all optional features",
aefc56c5 2847"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2848"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2849"-i[extension] edit <> files in place (makes backup if extension supplied)",
2850"-Idirectory specify @INC/#include directory (several -I's allowed)",
2851"-l[octal] enable line ending processing, specifies line terminator",
2852"-[mM][-]module execute \"use/no module...\" before executing program",
2853"-n assume \"while (<>) { ... }\" loop around program",
2854"-p assume loop like -n but print line also, like sed",
2855"-P run program through C preprocessor before compilation",
2856"-s enable rudimentary parsing for switches after programfile",
2857"-S look for programfile using PATH environment variable",
2858"-t enable tainting warnings",
2859"-T enable tainting checks",
2860"-u dump core after parsing program",
2861"-U allow unsafe operations",
2862"-v print version, subversion (includes VERY IMPORTANT perl info)",
2863"-V[:variable] print configuration summary (or a single Config.pm variable)",
2864"-w enable many useful warnings (RECOMMENDED)",
2865"-W enable all warnings",
2866"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2867"-X disable all warnings",
fb73857a
PP
2868"\n",
2869NULL
2870};
27da23d5 2871 const char * const *p = usage_msg;
fb73857a 2872
b0e47665
GS
2873 PerlIO_printf(PerlIO_stdout(),
2874 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2875 name);
fb73857a 2876 while (*p)
b0e47665 2877 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2878}
2879
b4ab917c
DM
2880/* convert a string of -D options (or digits) into an int.
2881 * sets *s to point to the char after the options */
2882
2883#ifdef DEBUGGING
2884int
e1ec3a88 2885Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2886{
27da23d5 2887 static const char * const usage_msgd[] = {
e6e64d9b
JC
2888 " Debugging flag values: (see also -d)",
2889 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2890 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2891 " l Context (loop) stack processing",
2892 " t Trace execution",
2893 " o Method and overloading resolution",
2894 " c String/numeric conversions",
2895 " P Print profiling info, preprocessor command for -P, source file input state",
2896 " m Memory allocation",
2897 " f Format processing",
2898 " r Regular expression parsing and execution",
2899 " x Syntax tree dump",
3679267a 2900 " u Tainting checks",
e6e64d9b
JC
2901 " H Hash dump -- usurps values()",
2902 " X Scratchpad allocation",
2903 " D Cleaning up",
2904 " S Thread synchronization",
2905 " T Tokenising",
2906 " R Include reference counts of dumped variables (eg when using -Ds)",
2907 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2908 " v Verbose: use in conjunction with other flags",
2909 " C Copy On Write",
2910 " A Consistency checks on internal structures",
3679267a 2911 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2912 NULL
2913 };
b4ab917c
DM
2914 int i = 0;
2915 if (isALPHA(**s)) {
2916 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2917 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2918
2919 for (; isALNUM(**s); (*s)++) {
c4420975 2920 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2921 if (d)
2922 i |= 1 << (d - debopts);
2923 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2924 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2925 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2926 }
2927 }
e6e64d9b 2928 else if (isDIGIT(**s)) {
b4ab917c
DM
2929 i = atoi(*s);
2930 for (; isALNUM(**s); (*s)++) ;
2931 }
ddcf8bc1 2932 else if (givehelp) {
06e869a4 2933 const char *const *p = usage_msgd;
e6e64d9b
JC
2934 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2935 }
b4ab917c
DM
2936# ifdef EBCDIC
2937 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2938 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2939 "-Dp not implemented on this platform\n");
2940# endif
2941 return i;
2942}
2943#endif
2944
79072805
LW
2945/* This routine handles any switches that can be given during run */
2946
2947char *
864dbfa3 2948Perl_moreswitches(pTHX_ char *s)
79072805 2949{
27da23d5 2950 dVAR;
84c133a0 2951 UV rschar;
79072805
LW
2952
2953 switch (*s) {
2954 case '0':
a863c7d1 2955 {
f2095865 2956 I32 flags = 0;
a3b680e6 2957 STRLEN numlen;
f2095865
JH
2958
2959 SvREFCNT_dec(PL_rs);
2960 if (s[1] == 'x' && s[2]) {
a3b680e6 2961 const char *e = s+=2;
f2095865
JH
2962 U8 *tmps;
2963
a3b680e6
AL
2964 while (*e)
2965 e++;
f2095865
JH
2966 numlen = e - s;
2967 flags = PERL_SCAN_SILENT_ILLDIGIT;
2968 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2969 if (s + numlen < e) {
2970 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2971 numlen = 0;
2972 s--;
2973 }
396482e1 2974 PL_rs = newSVpvs("");
c5661c80 2975 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2976 tmps = (U8*)SvPVX(PL_rs);
2977 uvchr_to_utf8(tmps, rschar);
2978 SvCUR_set(PL_rs, UNISKIP(rschar));
2979 SvUTF8_on(PL_rs);
2980 }
2981 else {
2982 numlen = 4;
2983 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2984 if (rschar & ~((U8)~0))
2985 PL_rs = &PL_sv_undef;
2986 else if (!rschar && numlen >= 2)
396482e1 2987 PL_rs = newSVpvs("");
f2095865
JH
2988 else {
2989 char ch = (char)rschar;
2990 PL_rs = newSVpvn(&ch, 1);
2991 }
2992 }
800633c3 2993 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 2994 return s + numlen;
a863c7d1 2995 }
46487f74 2996 case 'C':
a05d7ebb 2997 s++;
dd374669 2998 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 2999 return s;
2304df62 3000 case 'F':
3280af22 3001 PL_minus_F = TRUE;
ebce5377
RGS
3002 PL_splitstr = ++s;
3003 while (*s && !isSPACE(*s)) ++s;
3004 *s = '\0';
3005 PL_splitstr = savepv(PL_splitstr);
2304df62 3006 return s;
79072805 3007 case 'a':
3280af22 3008 PL_minus_a = TRUE;
79072805
LW
3009 s++;
3010 return s;
3011 case 'c':
3280af22 3012 PL_minus_c = TRUE;
79072805
LW
3013 s++;
3014 return s;
3015 case 'd':
bbce6d69 3016 forbid_setid("-d");
4633a7c4 3017 s++;
2cbb2ee1
RGS
3018
3019 /* -dt indicates to the debugger that threads will be used */
3020 if (*s == 't' && !isALNUM(s[1])) {
3021 ++s;
3022 my_setenv("PERL5DB_THREADED", "1");
3023 }
3024
70c94a19
RR
3025 /* The following permits -d:Mod to accepts arguments following an =
3026 in the fashion that -MSome::Mod does. */
3027 if (*s == ':' || *s == '=') {
06b5626a 3028 const char *start;
396482e1 3029 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3030 start = ++s;
3031 /* We now allow -d:Module=Foo,Bar */
3032 while(isALNUM(*s) || *s==':') ++s;
3033 if (*s != '=')
3034 sv_catpv(sv, start);
3035 else {
3036 sv_catpvn(sv, start, s-start);
0c5a913d 3037 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
70c94a19 3038 }
4633a7c4 3039 s += strlen(s);
184f32ec 3040 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3041 }
ed094faf 3042 if (!PL_perldb) {
3280af22 3043 PL_perldb = PERLDB_ALL;
a0d0e21e 3044 init_debugger();
ed094faf 3045 }
79072805
LW
3046 return s;
3047 case 'D':
0453d815 3048 {
79072805 3049#ifdef DEBUGGING
bbce6d69 3050 forbid_setid("-D");
b4ab917c 3051 s++;
dd374669 3052 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3053#else /* !DEBUGGING */
0453d815 3054 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3055 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3056 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3057 for (s++; isALNUM(*s); s++) ;
79072805 3058#endif
79072805 3059 return s;
0453d815 3060 }
4633a7c4 3061 case 'h':
ac27b0f5 3062 usage(PL_origargv[0]);
7ca617d0 3063 my_exit(0);
79072805 3064 case 'i':
43c5f42d 3065 Safefree(PL_inplace);
c030f24b
GH
3066#if defined(__CYGWIN__) /* do backup extension automagically */
3067 if (*(s+1) == '\0') {
c86a4f2e 3068 PL_inplace = savepvs(".bak");
c030f24b
GH
3069 return s+1;
3070 }
3071#endif /* __CYGWIN__ */
3280af22 3072 PL_inplace = savepv(s+1);
a6e20a40
AL
3073 for (s = PL_inplace; *s && !isSPACE(*s); s++)
3074 ;
7b8d334a 3075 if (*s) {
fb73857a 3076 *s++ = '\0';
7b8d334a
GS
3077 if (*s == '-') /* Additional switches on #! line. */
3078 s++;
3079 }
fb73857a 3080 return s;
4e49a025 3081 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 3082 forbid_setid("-I");
fb73857a
PP
3083 ++s;
3084 while (*s && isSPACE(*s))
3085 ++s;
3086 if (*s) {
774d564b 3087 char *e, *p;
0df16ed7
GS
3088 p = s;
3089 /* ignore trailing spaces (possibly followed by other switches) */
3090 do {
3091 for (e = p; *e && !isSPACE(*e); e++) ;
3092 p = e;
3093 while (isSPACE(*p))
3094 p++;
3095 } while (*p && *p != '-');
3096 e = savepvn(s, e-s);
88fe16b2 3097 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3098 Safefree(e);
3099 s = p;
3100 if (*s == '-')
3101 s++;
79072805
LW
3102 }
3103 else
a67e862a 3104 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3105 return s;
79072805 3106 case 'l':
3280af22 3107 PL_minus_l = TRUE;
79072805 3108 s++;
7889fe52
NIS
3109 if (PL_ors_sv) {
3110 SvREFCNT_dec(PL_ors_sv);
3111 PL_ors_sv = Nullsv;
3112 }
79072805 3113 if (isDIGIT(*s)) {
53305cf1 3114 I32 flags = 0;
a3b680e6 3115 STRLEN numlen;
396482e1 3116 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3117 numlen = 3 + (*s == '0');
3118 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3119 s += numlen;
3120 }
3121 else {
8bfdd7d9 3122 if (RsPARA(PL_rs)) {
396482e1 3123 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3124 }
3125 else {
8bfdd7d9 3126 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3127 }
79072805
LW
3128 }
3129 return s;
06492da6
SF
3130 case 'A':
3131 forbid_setid("-A");
930366bd
RGS
3132 if (!PL_preambleav)
3133 PL_preambleav = newAV();
aefc56c5
SF
3134 s++;
3135 {
44f8325f 3136 char * const start = s;
396482e1 3137 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3138 while(isALNUM(*s) || *s == ':') ++s;
3139 if (s != start) {
396482e1 3140 sv_catpvs(sv, "::");
aefc56c5
SF
3141 sv_catpvn(sv, start, s-start);
3142 }
3143 if (*s == '=') {
0c5a913d 3144 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3145 s+=strlen(s);
3146 }
3147 else if (*s != '\0') {
551405c4 3148 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3149 }
06492da6 3150 av_push(PL_preambleav, sv);
aefc56c5 3151 return s;
06492da6 3152 }
1a30305b 3153 case 'M':
bbce6d69 3154 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
3155 /* FALL THROUGH */
3156 case 'm':
bbce6d69 3157 forbid_setid("-m"); /* XXX ? */
1a30305b 3158 if (*++s) {
a5f75d66 3159 char *start;
11343788 3160 SV *sv;
e1ec3a88 3161 const char *use = "use ";
a5f75d66 3162 /* -M-foo == 'no foo' */
d0043bd1
NC
3163 /* Leading space on " no " is deliberate, to make both
3164 possibilities the same length. */
3165 if (*s == '-') { use = " no "; ++s; }
3166 sv = newSVpvn(use,4);
a5f75d66 3167 start = s;
1a30305b 3168 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3169 while(isALNUM(*s) || *s==':') ++s;
3170 if (*s != '=') {
11343788 3171 sv_catpv(sv, start);
c07a80fd
PP
3172 if (*(start-1) == 'm') {
3173 if (*s != '\0')
cea2e8a9 3174 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3175 sv_catpvs( sv, " ()");
c07a80fd
PP
3176 }
3177 } else {
6df41af2 3178 if (s == start)
be98fb35
GS
3179 Perl_croak(aTHX_ "Module name required with -%c option",
3180 s[-1]);
11343788 3181 sv_catpvn(sv, start, s-start);
396482e1
GA
3182 sv_catpvs(sv, " split(/,/,q");
3183 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3184 sv_catpv(sv, ++s);
396482e1 3185 sv_catpvs(sv, "\0)");
c07a80fd 3186 }
1a30305b 3187 s += strlen(s);
5c831c24 3188 if (!PL_preambleav)
3280af22
NIS
3189 PL_preambleav = newAV();
3190 av_push(PL_preambleav, sv);
1a30305b
PP
3191 }
3192 else
9e81e6a1 3193 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3194 return s;
79072805 3195 case 'n':
3280af22 3196 PL_minus_n = TRUE;
79072805
LW
3197 s++;
3198 return s;
3199 case 'p':
3280af22 3200 PL_minus_p = TRUE;
79072805
LW
3201 s++;
3202 return s;
3203 case 's':
bbce6d69 3204 forbid_setid("-s");
3280af22 3205 PL_doswitches = TRUE;
79072805
LW
3206 s++;
3207 return s;
6537fe72
MS
3208 case 't':
3209 if (!PL_tainting)
22f7c9c9 3210 TOO_LATE_FOR('t');
6537fe72
MS
3211 s++;
3212 return s;
463ee0b2 3213 case 'T':
3280af22 3214 if (!PL_tainting)
22f7c9c9 3215 TOO_LATE_FOR('T');
463ee0b2
LW
3216 s++;
3217 return s;
79072805 3218 case 'u':
bf4acbe4
GS
3219#ifdef MACOS_TRADITIONAL
3220 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3221#endif
3280af22 3222 PL_do_undump = TRUE;
79072805
LW
3223 s++;
3224 return s;
3225 case 'U':
3280af22 3226 PL_unsafe = TRUE;
79072805
LW
3227 s++;
3228 return s;
3229 case 'v':
d7aa5382 3230 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3231 upg_version(PL_patchlevel);
8e9464f1 3232#if !defined(DGUX)
b0e47665 3233 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3234 Perl_form(aTHX_ "\nThis is perl, %"SVf
3235#ifdef PERL_PATCHNUM
3236 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3237#endif
3238 " built for %s",
d7aa5382
JP
3239 vstringify(PL_patchlevel),
3240 ARCHNAME));
8e9464f1
JH
3241#else /* DGUX */
3242/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3243 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3244 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3245 vstringify(PL_patchlevel)));
8e9464f1
JH
3246 PerlIO_printf(PerlIO_stdout(),
3247 Perl_form(aTHX_ " built under %s at %s %s\n",
3248 OSNAME, __DATE__, __TIME__));
3249 PerlIO_printf(PerlIO_stdout(),
3250 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3251 OSVERS));
8e9464f1
JH
3252#endif /* !DGUX */
3253
fb73857a
PP
3254#if defined(LOCAL_PATCH_COUNT)
3255 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3256 PerlIO_printf(PerlIO_stdout(),
3257 "\n(with %d registered patch%s, "
3258 "see perl -V for more detail)",
3259 (int)LOCAL_PATCH_COUNT,
3260 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3261#endif
1a30305b 3262
b0e47665 3263 PerlIO_printf(PerlIO_stdout(),
3246d7a3 3264 "\n\nCopyright 1987-2006, Larry Wall\n");
eae9c151
JH
3265#ifdef MACOS_TRADITIONAL
3266 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3267 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3268 "maintained by Chris Nandor\n");
eae9c151 3269#endif
79072805 3270#ifdef MSDOS
b0e47665
GS
3271 PerlIO_printf(PerlIO_stdout(),
3272 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3273#endif
3274#ifdef DJGPP
b0e47665
GS
3275 PerlIO_printf(PerlIO_stdout(),
3276 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3277 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3278#endif
79072805 3279#ifdef OS2
b0e47665
GS
3280 PerlIO_printf(PerlIO_stdout(),
3281 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3282 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3283#endif
79072805 3284#ifdef atarist
b0e47665
GS
3285 PerlIO_printf(PerlIO_stdout(),
3286 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3287#endif
a3f9223b 3288#ifdef __BEOS__
b0e47665
GS
3289 PerlIO_printf(PerlIO_stdout(),
3290 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3291#endif
1d84e8df 3292#ifdef MPE
b0e47665 3293 PerlIO_printf(PerlIO_stdout(),
e583a879 3294 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3295#endif
9d116dd7 3296#ifdef OEMVS
b0e47665
GS
3297 PerlIO_printf(PerlIO_stdout(),
3298 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3299#endif
495c5fdc 3300#ifdef __VOS__
b0e47665 3301 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3302 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3303#endif
092bebab 3304#ifdef __OPEN_VM
b0e47665
GS
3305 PerlIO_printf(PerlIO_stdout(),
3306 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3307#endif
a1a0e61e 3308#ifdef POSIX_BC
b0e47665
GS
3309 PerlIO_printf(PerlIO_stdout(),
3310 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3311#endif
61ae2fbf 3312#ifdef __MINT__
b0e47665
GS
3313 PerlIO_printf(PerlIO_stdout(),
3314 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3315#endif
f83d2536 3316#ifdef EPOC
b0e47665 3317 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3318 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3319#endif
e1caacb4 3320#ifdef UNDER_CE
b475b3e6
JH
3321 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3322 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3323 wce_hitreturn();
3324#endif
a0fd4948 3325#ifdef __SYMBIAN32__
27da23d5
JH
3326 PerlIO_printf(PerlIO_stdout(),
3327 "Symbian port by Nokia, 2004-2005\n");
3328#endif
baed7233
DL
3329#ifdef BINARY_BUILD_NOTICE
3330 BINARY_BUILD_NOTICE;
3331#endif
b0e47665
GS
3332 PerlIO_printf(PerlIO_stdout(),
3333 "\n\
79072805 3334Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3335GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3336Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3337this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3338Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3339 my_exit(0);
79072805 3340 case 'w':
599cee73 3341 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3342 PL_dowarn |= G_WARN_ON;
599cee73
PM
3343 s++;
3344 return s;
3345 case 'W':
ac27b0f5 3346 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3347 if (!specialWARN(PL_compiling.cop_warnings))
3348 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3349 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3350 s++;
3351 return s;
3352 case 'X':
ac27b0f5 3353 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3354 if (!specialWARN(PL_compiling.cop_warnings))
3355 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3356 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3357 s++;
3358 return s;
a0d0e21e 3359 case '*':
79072805
LW
3360 case ' ':
3361 if (s[1] == '-') /* Additional switches on #! line. */
3362 return s+2;
3363 break;
a0d0e21e 3364 case '-':
79072805 3365 case 0:
51882d45 3366#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3367 case '\r':
3368#endif
79072805
LW
3369 case '\n':
3370 case '\t':
3371 break;
aa689395
PP
3372#ifdef ALTERNATE_SHEBANG
3373 case 'S': /* OS/2 needs -S on "extproc" line. */
3374 break;
3375#endif
a0d0e21e 3376 case 'P':
3280af22 3377 if (PL_preprocess)
a0d0e21e
LW
3378 return s+1;
3379 /* FALL THROUGH */
79072805 3380 default:
cea2e8a9 3381 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
3382 }
3383 return Nullch;
3384}
3385
3386/* compliments of Tom Christiansen */
3387
3388/* unexec() can be found in the Gnu emacs distribution */
ee580363 3389/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3390
3391void
864dbfa3 3392Perl_my_unexec(pTHX)
79072805
LW
3393{
3394#ifdef UNEXEC
46fc3d4c
PP
3395 SV* prog;
3396 SV* file;
ee580363 3397 int status = 1;
79072805
LW
3398 extern int etext;
3399
ee580363 3400 prog = newSVpv(BIN_EXP, 0);
396482e1 3401 sv_catpvs(prog, "/perl");
6b88bc9c 3402 file = newSVpv(PL_origfilename, 0);
396482e1 3403 sv_catpvs(file, ".perldump");
79072805 3404
ee580363
GS
3405 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3406 /* unexec prints msg to stderr in case of failure */
6ad3d225 3407 PerlProc_exit(status);
79072805 3408#else
a5f75d66
AD
3409# ifdef VMS
3410# include <lib$routines.h>
3411 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 3412# else
79072805 3413 ABORT(); /* for use with undump */
aa689395 3414# endif
a5f75d66 3415#endif
79072805
LW
3416}
3417
cb68f92d
GS
3418/* initialize curinterp */
3419STATIC void
cea2e8a9 3420S_init_interp(pTHX)
cb68f92d 3421{
97aff369 3422 dVAR;
acfe0abc
GS
3423#ifdef MULTIPLICITY
3424# define PERLVAR(var,type)
3425# define PERLVARA(var,n,type)
3426# if defined(PERL_IMPLICIT_CONTEXT)
3427# if defined(USE_5005THREADS)
3428# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
27da23d5 3429# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
3430# else /* !USE_5005THREADS */
3431# define PERLVARI(var,type,init) aTHX->var = init;
3432# define PERLVARIC(var,type,init) aTHX->var = init;
3433# endif /* USE_5005THREADS */
3967c732 3434# else
acfe0abc
GS
3435# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3436# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3437# endif
acfe0abc
GS
3438# include "intrpvar.h"
3439# ifndef USE_5005THREADS
3440# include "thrdvar.h"
3441# endif
3442# undef PERLVAR
3443# undef PERLVARA
3444# undef PERLVARI
3445# undef PERLVARIC
3446#else
3447# define PERLVAR(var,type)
3448# define PERLVARA(var,n,type)
3449# define PERLVARI(var,type,init) PL_##var = init;
3450# define PERLVARIC(var,type,init) PL_##var = init;
3451# include "intrpvar.h"
3452# ifndef USE_5005THREADS
3453# include "thrdvar.h"
3454# endif
3455# undef PERLVAR
3456# undef PERLVARA
3457# undef PERLVARI
3458# undef PERLVARIC
cb68f92d
GS
3459#endif
3460
cb68f92d
GS
3461}
3462
76e3520e 3463STATIC void
cea2e8a9 3464S_init_main_stash(pTHX)
79072805 3465{
97aff369 3466 dVAR;
463ee0b2 3467 GV *gv;
6e72f9df 3468
3280af22 3469 PL_curstash = PL_defstash = newHV();
23579a14
NC
3470 /* We know that the string "main" will be in the global shared string
3471 table, so it's a small saving to use it rather than allocate another
3472 8 bytes. */
18916d0d 3473 PL_curstname = newSVpvs_share("main");
adbc6bb1 3474 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
23579a14
NC
3475 /* If we hadn't caused another reference to "main" to be in the shared
3476 string table above, then it would be worth reordering these two,
3477 because otherwise all we do is delete "main" from it as a consequence
3478 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3479 SvREFCNT_dec(GvHV(gv));
23579a14 3480 hv_name_set(PL_defstash, "main", 4, 0);
3280af22 3481 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3482 SvREADONLY_on(gv);
3280af22 3483 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
5fd80ba5 3484 SvREFCNT_inc(PL_incgv); /* Don't allow it to be freed */
3280af22
NIS
3485 GvMULTI_on(PL_incgv);
3486 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
3487 GvMULTI_on(PL_hintgv);
3488 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
5fd80ba5 3489 SvREFCNT_inc(PL_defgv);
3280af22 3490 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
5fd80ba5 3491 SvREFCNT_inc(PL_errgv);
3280af22
NIS
3492 GvMULTI_on(PL_errgv);
3493 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
3494 GvMULTI_on(PL_replgv);
cea2e8a9 3495 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3496#ifdef PERL_DONT_CREATE_GVSV
3497 gv_SVadd(PL_errgv);
3498#endif
38a03e6e
MB
3499 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3500 sv_setpvn(ERRSV, "", 0);
3280af22 3501 PL_curstash = PL_defstash;
11faa288 3502 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 3503 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 3504 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 3505 /* We must init $/ before switches are processed. */
864dbfa3 3506 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
3507}
3508
ae3f3efd 3509/* PSz 18 Nov 03 fdscript now global but do not change prototype */
76e3520e 3510STATIC void
dd374669 3511S_open_script(pTHX_ const char *scriptname, bool dosearch, SV *sv)
79072805 3512{
ae3f3efd 3513#ifndef IAMSUID
e1ec3a88
AL
3514 const char *quote;
3515 const char *code;
3516 const char *cpp_discard_flag;
3517 const char *perl;
ae3f3efd 3518#endif
27da23d5 3519 dVAR;
1b24ed4b 3520
ae3f3efd
PS
3521 PL_fdscript = -1;
3522 PL_suidscript = -1;
79072805 3523