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Remove "Can't upgrade to undef" from perldiag, as the corresponding
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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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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
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99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
2aa47728
NC
108#endif
109
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110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
e6827a76 140static void
daa7d858 141S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 142{
27da23d5 143 dVAR;
e6827a76
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144 if (!PL_curinterp) {
145 PERL_SET_INTERP(my_perl);
3db8f154 146#if defined(USE_ITHREADS)
e6827a76
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147 INIT_THREADS;
148 ALLOC_THREAD_KEY;
149 PERL_SET_THX(my_perl);
150 OP_REFCNT_INIT;
151 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 152# endif
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153#ifdef PERL_IMPLICIT_CONTEXT
154 MUTEX_INIT(&PL_my_ctx_mutex);
155# endif
e6827a76
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156 }
157 else {
158 PERL_SET_THX(my_perl);
159 }
160}
06d86050 161
32e30700
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162#ifdef PERL_IMPLICIT_SYS
163PerlInterpreter *
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164perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
165 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
166 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
167 struct IPerlDir* ipD, struct IPerlSock* ipS,
168 struct IPerlProc* ipP)
169{
170 PerlInterpreter *my_perl;
9f653bb5 171 /* Newx() needs interpreter, so call malloc() instead */
32e30700 172 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 173 S_init_tls_and_interp(my_perl);
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174 Zero(my_perl, 1, PerlInterpreter);
175 PL_Mem = ipM;
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176 PL_MemShared = ipMS;
177 PL_MemParse = ipMP;
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178 PL_Env = ipE;
179 PL_StdIO = ipStd;
180 PL_LIO = ipLIO;
181 PL_Dir = ipD;
182 PL_Sock = ipS;
183 PL_Proc = ipP;
7cb608b5 184 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 185
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186 return my_perl;
187}
188#else
954c1994
GS
189
190/*
ccfc67b7
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191=head1 Embedding Functions
192
954c1994
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193=for apidoc perl_alloc
194
195Allocates a new Perl interpreter. See L<perlembed>.
196
197=cut
198*/
199
93a17b20 200PerlInterpreter *
cea2e8a9 201perl_alloc(void)
79072805 202{
cea2e8a9 203 PerlInterpreter *my_perl;
79072805 204
9f653bb5 205 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 206 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 207
e6827a76 208 S_init_tls_and_interp(my_perl);
7cb608b5 209#ifndef PERL_TRACK_MEMPOOL
07409e01 210 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
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211#else
212 Zero(my_perl, 1, PerlInterpreter);
213 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
214 return my_perl;
215#endif
79072805 216}
32e30700 217#endif /* PERL_IMPLICIT_SYS */
79072805 218
954c1994
GS
219/*
220=for apidoc perl_construct
221
222Initializes a new Perl interpreter. See L<perlembed>.
223
224=cut
225*/
226
79072805 227void
0cb96387 228perl_construct(pTHXx)
79072805 229{
27da23d5 230 dVAR;
9d4ba2ae 231 PERL_UNUSED_ARG(my_perl);
8990e307 232#ifdef MULTIPLICITY
54aff467 233 init_interp();
ac27b0f5 234 PL_perl_destruct_level = 1;
54aff467
GS
235#else
236 if (PL_perl_destruct_level > 0)
237 init_interp();
238#endif
33f46ff6 239 /* Init the real globals (and main thread)? */
3280af22 240 if (!PL_linestr) {
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241 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
242
561b68a9 243 PL_linestr = newSV(79);
3280af22 244 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 245
3280af22 246 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
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247 /* set read-only and try to insure than we wont see REFCNT==0
248 very often */
249
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250 SvREADONLY_on(&PL_sv_undef);
251 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 252
3280af22 253 sv_setpv(&PL_sv_no,PL_No);
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254 /* value lookup in void context - happens to have the side effect
255 of caching the numeric forms. */
256 SvIV(&PL_sv_no);
3280af22
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257 SvNV(&PL_sv_no);
258 SvREADONLY_on(&PL_sv_no);
259 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 260
3280af22 261 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 262 SvIV(&PL_sv_yes);
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NIS
263 SvNV(&PL_sv_yes);
264 SvREADONLY_on(&PL_sv_yes);
265 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
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266
267 SvREADONLY_on(&PL_sv_placeholder);
268 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 269 }
79072805 270
8aad04aa 271 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 272#ifdef PERL_USES_PL_PIDSTATUS
3280af22 273 PL_pidstatus = newHV();
ca0c25f6 274#endif
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275 }
276
396482e1 277 PL_rs = newSVpvs("\n");
dc92893f 278
cea2e8a9 279 init_stacks();
79072805 280
748a9306 281 init_ids();
3280af22 282 PL_lex_state = LEX_NOTPARSING;
a5f75d66 283
312caa8e 284 JMPENV_BOOTSTRAP;
f86702cc
PP
285 STATUS_ALL_SUCCESS;
286
0672f40e 287 init_i18nl10n(1);
36477c24 288 SET_NUMERIC_STANDARD();
0b5b802d 289
ab821d7f 290#if defined(LOCAL_PATCH_COUNT)
3280af22 291 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
292#endif
293
52853b95
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294#ifdef HAVE_INTERP_INTERN
295 sys_intern_init();
296#endif
297
3a1ee7e8 298 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 299
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300 PL_fdpid = newAV(); /* for remembering popen pids by fd */
301 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 302 PL_errors = newSVpvs("");
48c6b404 303 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
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304 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
305 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 306#ifdef USE_ITHREADS
13137afc
AB
307 PL_regex_padav = newAV();
308 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
309 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 310#endif
e5dd39fc 311#ifdef USE_REENTRANT_API
59bd0823 312 Perl_reentrant_init(aTHX);
e5dd39fc 313#endif
3d47000e
AB
314
315 /* Note that strtab is a rather special HV. Assumptions are made
316 about not iterating on it, and not adding tie magic to it.
317 It is properly deallocated in perl_destruct() */
318 PL_strtab = newHV();
319
3d47000e
AB
320 HvSHAREKEYS_off(PL_strtab); /* mandatory */
321 hv_ksplit(PL_strtab, 512);
322
0631ea03
AB
323#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
324 _dyld_lookup_and_bind
325 ("__environ", (unsigned long *) &environ_pointer, NULL);
326#endif /* environ */
327
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328#ifndef PERL_MICRO
329# ifdef USE_ENVIRON_ARRAY
0631ea03 330 PL_origenviron = environ;
2f42fcb0 331# endif
0631ea03
AB
332#endif
333
5311654c 334 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 335 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
336 * BeOS has those, but returns the wrong value.
337 * The HZ if not originally defined has been by now
338 * been defined as CLK_TCK, if available. */
dbc1d986 339#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
340 PL_clocktick = sysconf(_SC_CLK_TCK);
341 if (PL_clocktick <= 0)
342#endif
343 PL_clocktick = HZ;
344
081fc587
AB
345 PL_stashcache = newHV();
346
e6830b13
NC
347 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
348 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 349
27da23d5
JH
350#ifdef HAS_MMAP
351 if (!PL_mmap_page_size) {
352#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
353 {
354 SETERRNO(0, SS_NORMAL);
355# ifdef _SC_PAGESIZE
356 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
357# else
358 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
359# endif
360 if ((long) PL_mmap_page_size < 0) {
361 if (errno) {
44f8325f 362 SV * const error = ERRSV;
27da23d5 363 (void) SvUPGRADE(error, SVt_PV);
0510663f 364 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
365 }
366 else
367 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
368 }
369 }
370#else
371# ifdef HAS_GETPAGESIZE
372 PL_mmap_page_size = getpagesize();
373# else
374# if defined(I_SYS_PARAM) && defined(PAGESIZE)
375 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
376# endif
377# endif
378#endif
379 if (PL_mmap_page_size <= 0)
380 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
381 (IV) PL_mmap_page_size);
382 }
383#endif /* HAS_MMAP */
384
385#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
386 PL_timesbase.tms_utime = 0;
387 PL_timesbase.tms_stime = 0;
388 PL_timesbase.tms_cutime = 0;
389 PL_timesbase.tms_cstime = 0;
390#endif
391
8990e307 392 ENTER;
79072805
LW
393}
394
954c1994 395/*
62375a60
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396=for apidoc nothreadhook
397
398Stub that provides thread hook for perl_destruct when there are
399no threads.
400
401=cut
402*/
403
404int
4e9e3734 405Perl_nothreadhook(pTHX)
62375a60
NIS
406{
407 return 0;
408}
409
41e4abd8
NC
410#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
411void
412Perl_dump_sv_child(pTHX_ SV *sv)
413{
414 ssize_t got;
bf357333
NC
415 const int sock = PL_dumper_fd;
416 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
417 union control_un control;
418 struct msghdr msg;
808ad2d0 419 struct iovec vec[2];
bf357333 420 struct cmsghdr *cmptr;
808ad2d0
NC
421 int returned_errno;
422 unsigned char buffer[256];
41e4abd8 423
bf357333 424 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
425 return;
426
427 PerlIO_flush(Perl_debug_log);
428
bf357333
NC
429 /* All these shenanigans are to pass a file descriptor over to our child for
430 it to dump out to. We can't let it hold open the file descriptor when it
431 forks, as the file descriptor it will dump to can turn out to be one end
432 of pipe that some other process will wait on for EOF. (So as it would
433 be open, the wait would be forever. */
434
435 msg.msg_control = control.control;
436 msg.msg_controllen = sizeof(control.control);
437 /* We're a connected socket so we don't need a destination */
438 msg.msg_name = NULL;
439 msg.msg_namelen = 0;
440 msg.msg_iov = vec;
808ad2d0 441 msg.msg_iovlen = 1;
bf357333
NC
442
443 cmptr = CMSG_FIRSTHDR(&msg);
444 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
445 cmptr->cmsg_level = SOL_SOCKET;
446 cmptr->cmsg_type = SCM_RIGHTS;
447 *((int *)CMSG_DATA(cmptr)) = 1;
448
449 vec[0].iov_base = (void*)&sv;
450 vec[0].iov_len = sizeof(sv);
451 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
452
453 if(got < 0) {
bf357333 454 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
455 abort();
456 }
bf357333
NC
457 if(got < sizeof(sv)) {
458 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
459 abort();
460 }
461
808ad2d0
NC
462 /* Return protocol is
463 int: errno value
464 unsigned char: length of location string (0 for empty)
465 unsigned char*: string (not terminated)
466 */
467 vec[0].iov_base = (void*)&returned_errno;
468 vec[0].iov_len = sizeof(returned_errno);
469 vec[1].iov_base = buffer;
470 vec[1].iov_len = 1;
471
472 got = readv(sock, vec, 2);
41e4abd8
NC
473
474 if(got < 0) {
475 perror("Debug leaking scalars parent read failed");
808ad2d0 476 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
477 abort();
478 }
808ad2d0 479 if(got < sizeof(returned_errno) + 1) {
41e4abd8 480 perror("Debug leaking scalars parent short read");
808ad2d0 481 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
482 abort();
483 }
484
808ad2d0
NC
485 if (*buffer) {
486 got = read(sock, buffer + 1, *buffer);
487 if(got < 0) {
488 perror("Debug leaking scalars parent read 2 failed");
489 PerlIO_flush(PerlIO_stderr());
490 abort();
491 }
492
493 if(got < *buffer) {
494 perror("Debug leaking scalars parent short read 2");
495 PerlIO_flush(PerlIO_stderr());
496 abort();
497 }
498 }
499
500 if (returned_errno || *buffer) {
501 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
502 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
503 returned_errno, strerror(returned_errno));
41e4abd8
NC
504 }
505}
506#endif
507
62375a60 508/*
954c1994
GS
509=for apidoc perl_destruct
510
511Shuts down a Perl interpreter. See L<perlembed>.
512
513=cut
514*/
515
31d77e54 516int
0cb96387 517perl_destruct(pTHXx)
79072805 518{
27da23d5 519 dVAR;
7c474504 520 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 521 HV *hv;
2aa47728 522#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
523 pid_t child;
524#endif
8990e307 525
9d4ba2ae
AL
526 PERL_UNUSED_ARG(my_perl);
527
7766f137
GS
528 /* wait for all pseudo-forked children to finish */
529 PERL_WAIT_FOR_CHILDREN;
530
3280af22 531 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
532#ifdef DEBUGGING
533 {
9d4ba2ae
AL
534 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
535 if (s) {
e1ec3a88 536 const int i = atoi(s);
5f05dabc
PP
537 if (destruct_level < i)
538 destruct_level = i;
539 }
4633a7c4
LW
540 }
541#endif
542
27da23d5 543 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
544 dJMPENV;
545 int x = 0;
546
547 JMPENV_PUSH(x);
1b6737cc 548 PERL_UNUSED_VAR(x);
f3faeb53
AB
549 if (PL_endav && !PL_minus_c)
550 call_list(PL_scopestack_ix, PL_endav);
551 JMPENV_POP;
26f423df 552 }
f3faeb53 553 LEAVE;
a0d0e21e
LW
554 FREETMPS;
555
e00b64d4 556 /* Need to flush since END blocks can produce output */
f13a2bc0 557 my_fflush_all();
e00b64d4 558
62375a60
NIS
559 if (CALL_FPTR(PL_threadhook)(aTHX)) {
560 /* Threads hook has vetoed further cleanup */
37038d91 561 return STATUS_EXIT;
62375a60
NIS
562 }
563
2aa47728
NC
564#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
565 if (destruct_level != 0) {
566 /* Fork here to create a child. Our child's job is to preserve the
567 state of scalars prior to destruction, so that we can instruct it
568 to dump any scalars that we later find have leaked.
569 There's no subtlety in this code - it assumes POSIX, and it doesn't
570 fail gracefully */
571 int fd[2];
572
573 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
574 perror("Debug leaking scalars socketpair failed");
575 abort();
576 }
577
578 child = fork();
579 if(child == -1) {
580 perror("Debug leaking scalars fork failed");
581 abort();
582 }
583 if (!child) {
584 /* We are the child */
3125a5a4
NC
585 const int sock = fd[1];
586 const int debug_fd = PerlIO_fileno(Perl_debug_log);
587 int f;
808ad2d0
NC
588 const char *where;
589 /* Our success message is an integer 0, and a char 0 */
590 static const char success[sizeof(int) + 1];
3125a5a4 591
2aa47728 592 close(fd[0]);
2aa47728 593
3125a5a4
NC
594 /* We need to close all other file descriptors otherwise we end up
595 with interesting hangs, where the parent closes its end of a
596 pipe, and sits waiting for (another) child to terminate. Only
597 that child never terminates, because it never gets EOF, because
bf357333
NC
598 we also have the far end of the pipe open. We even need to
599 close the debugging fd, because sometimes it happens to be one
600 end of a pipe, and a process is waiting on the other end for
601 EOF. Normally it would be closed at some point earlier in
602 destruction, but if we happen to cause the pipe to remain open,
603 EOF never occurs, and we get an infinite hang. Hence all the
604 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
605
606 f = sysconf(_SC_OPEN_MAX);
607 if(f < 0) {
808ad2d0
NC
608 where = "sysconf failed";
609 goto abort;
3125a5a4
NC
610 }
611 while (f--) {
612 if (f == sock)
613 continue;
3125a5a4
NC
614 close(f);
615 }
616
2aa47728
NC
617 while (1) {
618 SV *target;
bf357333
NC
619 union control_un control;
620 struct msghdr msg;
621 struct iovec vec[1];
622 struct cmsghdr *cmptr;
623 ssize_t got;
624 int got_fd;
625
626 msg.msg_control = control.control;
627 msg.msg_controllen = sizeof(control.control);
628 /* We're a connected socket so we don't need a source */
629 msg.msg_name = NULL;
630 msg.msg_namelen = 0;
631 msg.msg_iov = vec;
632 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
633
634 vec[0].iov_base = (void*)&target;
635 vec[0].iov_len = sizeof(target);
636
637 got = recvmsg(sock, &msg, 0);
2aa47728
NC
638
639 if(got == 0)
640 break;
641 if(got < 0) {
808ad2d0
NC
642 where = "recv failed";
643 goto abort;
2aa47728
NC
644 }
645 if(got < sizeof(target)) {
808ad2d0
NC
646 where = "short recv";
647 goto abort;
2aa47728 648 }
bf357333 649
808ad2d0
NC
650 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
651 where = "no cmsg";
652 goto abort;
653 }
654 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
655 where = "wrong cmsg_len";
656 goto abort;
657 }
658 if(cmptr->cmsg_level != SOL_SOCKET) {
659 where = "wrong cmsg_level";
660 goto abort;
661 }
662 if(cmptr->cmsg_type != SCM_RIGHTS) {
663 where = "wrong cmsg_type";
664 goto abort;
665 }
bf357333
NC
666
667 got_fd = *(int*)CMSG_DATA(cmptr);
668 /* For our last little bit of trickery, put the file descriptor
669 back into Perl_debug_log, as if we never actually closed it
670 */
808ad2d0
NC
671 if(got_fd != debug_fd) {
672 if (dup2(got_fd, debug_fd) == -1) {
673 where = "dup2";
674 goto abort;
675 }
676 }
2aa47728 677 sv_dump(target);
bf357333 678
2aa47728
NC
679 PerlIO_flush(Perl_debug_log);
680
808ad2d0 681 got = write(sock, &success, sizeof(success));
2aa47728
NC
682
683 if(got < 0) {
808ad2d0
NC
684 where = "write failed";
685 goto abort;
2aa47728 686 }
808ad2d0
NC
687 if(got < sizeof(success)) {
688 where = "short write";
689 goto abort;
2aa47728
NC
690 }
691 }
692 _exit(0);
808ad2d0
NC
693 abort:
694 {
695 int send_errno = errno;
696 unsigned char length = (unsigned char) strlen(where);
697 struct iovec failure[3] = {
698 {(void*)&send_errno, sizeof(send_errno)},
699 {&length, 1},
700 {(void*)where, length}
701 };
702 int got = writev(sock, failure, 3);
703 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
704 in the parent if we try to read from the socketpair after the
705 child has exited, even if there was data to read.
706 So sleep a bit to give the parent a fighting chance of
707 reading the data. */
708 sleep(2);
709 _exit((got == -1) ? errno : 0);
710 }
bf357333 711 /* End of child. */
2aa47728 712 }
41e4abd8 713 PL_dumper_fd = fd[0];
2aa47728
NC
714 close(fd[1]);
715 }
716#endif
717
ff0cee69
PP
718 /* We must account for everything. */
719
720 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
721 /* Do this now, because destroying ops can cause new SVs to be generated
722 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
723 PL_curcop to point to a valid op from which the filename structure
724 member is copied. */
725 PL_curcop = &PL_compiling;
3280af22 726 if (PL_main_root) {
4e380990
DM
727 /* ensure comppad/curpad to refer to main's pad */
728 if (CvPADLIST(PL_main_cv)) {
729 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
730 }
3280af22
NIS
731 op_free(PL_main_root);
732 PL_main_root = Nullop;
a0d0e21e 733 }
3280af22
NIS
734 PL_main_start = Nullop;
735 SvREFCNT_dec(PL_main_cv);
601f1833 736 PL_main_cv = NULL;
24d3c518 737 PL_dirty = TRUE;
ff0cee69 738
13621cfb
NIS
739 /* Tell PerlIO we are about to tear things apart in case
740 we have layers which are using resources that should
741 be cleaned up now.
742 */
743
744 PerlIO_destruct(aTHX);
745
3280af22 746 if (PL_sv_objcount) {
a0d0e21e
LW
747 /*
748 * Try to destruct global references. We do this first so that the
749 * destructors and destructees still exist. Some sv's might remain.
750 * Non-referenced objects are on their own.
751 */
a0d0e21e 752 sv_clean_objs();
bf9cdc68 753 PL_sv_objcount = 0;
a0de6cf5 754 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 755 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
756 }
757
5cd24f17 758 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 759 SvREFCNT_dec(PL_warnhook);
a0714e2c 760 PL_warnhook = NULL;
3280af22 761 SvREFCNT_dec(PL_diehook);
a0714e2c 762 PL_diehook = NULL;
5cd24f17 763
4b556e6c 764 /* call exit list functions */
3280af22 765 while (PL_exitlistlen-- > 0)
acfe0abc 766 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 767
3280af22 768 Safefree(PL_exitlist);
4b556e6c 769
1c4916e5
CB
770 PL_exitlist = NULL;
771 PL_exitlistlen = 0;
772
a0d0e21e 773 if (destruct_level == 0){
8990e307 774
a0d0e21e 775 DEBUG_P(debprofdump());
ac27b0f5 776
56a2bab7
NIS
777#if defined(PERLIO_LAYERS)
778 /* No more IO - including error messages ! */
779 PerlIO_cleanup(aTHX);
780#endif
781
a0d0e21e 782 /* The exit() function will do everything that needs doing. */
37038d91 783 return STATUS_EXIT;
a0d0e21e 784 }
5dd60ef7 785
551a8b83 786 /* jettison our possibly duplicated environment */
4b647fb0
DM
787 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
788 * so we certainly shouldn't free it here
789 */
2f42fcb0 790#ifndef PERL_MICRO
4b647fb0 791#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 792 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
793#ifdef USE_ITHREADS
794 /* only main thread can free environ[0] contents */
795 && PL_curinterp == aTHX
796#endif
797 )
798 {
551a8b83
JH
799 I32 i;
800
801 for (i = 0; environ[i]; i++)
4b420006 802 safesysfree(environ[i]);
0631ea03 803
4b420006
JH
804 /* Must use safesysfree() when working with environ. */
805 safesysfree(environ);
551a8b83
JH
806
807 environ = PL_origenviron;
808 }
809#endif
2f42fcb0 810#endif /* !PERL_MICRO */
551a8b83 811
804ffa60 812 /* reset so print() ends up where we expect */
a0714e2c 813 setdefout(NULL);
804ffa60 814
5f8cb046
DM
815#ifdef USE_ITHREADS
816 /* the syntax tree is shared between clones
817 * so op_free(PL_main_root) only ReREFCNT_dec's
818 * REGEXPs in the parent interpreter
819 * we need to manually ReREFCNT_dec for the clones
820 */
821 {
822 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 823 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
824
825 while (i) {
c4420975 826 SV * const resv = ary[--i];
35061a7e
DM
827
828 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 829 /* this is PL_reg_curpm, already freed
35061a7e
DM
830 * flag is set in regexec.c:S_regtry
831 */
832 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 833 }
1cc8b4c5
AB
834 else if(SvREPADTMP(resv)) {
835 SvREPADTMP_off(resv);
836 }
a560f29b
NC
837 else if(SvIOKp(resv)) {
838 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
839 ReREFCNT_dec(re);
840 }
841 }
842 }
843 SvREFCNT_dec(PL_regex_padav);
7d49f689 844 PL_regex_padav = NULL;
5f8cb046
DM
845 PL_regex_pad = NULL;
846#endif
847
081fc587
AB
848 SvREFCNT_dec((SV*) PL_stashcache);
849 PL_stashcache = NULL;
850
5f05dabc
PP
851 /* loosen bonds of global variables */
852
3280af22
NIS
853 if(PL_rsfp) {
854 (void)PerlIO_close(PL_rsfp);
855 PL_rsfp = Nullfp;
8ebc5c01
PP
856 }
857
858 /* Filters for program text */
3280af22 859 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 860 PL_rsfp_filters = NULL;
8ebc5c01
PP
861
862 /* switches */
3280af22
NIS
863 PL_preprocess = FALSE;
864 PL_minus_n = FALSE;
865 PL_minus_p = FALSE;
866 PL_minus_l = FALSE;
867 PL_minus_a = FALSE;
868 PL_minus_F = FALSE;
869 PL_doswitches = FALSE;
599cee73 870 PL_dowarn = G_WARN_OFF;
3280af22
NIS
871 PL_doextract = FALSE;
872 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
873 PL_unsafe = FALSE;
874
875 Safefree(PL_inplace);
bd61b366 876 PL_inplace = NULL;
a7cb1f99 877 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
878
879 if (PL_e_script) {
880 SvREFCNT_dec(PL_e_script);
a0714e2c 881 PL_e_script = NULL;
8ebc5c01
PP
882 }
883
bf9cdc68
RG
884 PL_perldb = 0;
885
8ebc5c01
PP
886 /* magical thingies */
887
7889fe52 888 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 889 PL_ofs_sv = NULL;
5f05dabc 890
7889fe52 891 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 892 PL_ors_sv = NULL;
8ebc5c01 893
3280af22 894 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 895 PL_rs = NULL;
dc92893f 896
d33b2eba
GS
897 PL_multiline = 0; /* $* */
898 Safefree(PL_osname); /* $^O */
bd61b366 899 PL_osname = NULL;
5f05dabc 900
3280af22 901 SvREFCNT_dec(PL_statname);
a0714e2c
SS
902 PL_statname = NULL;
903 PL_statgv = NULL;
5f05dabc 904
8ebc5c01
PP
905 /* defgv, aka *_ should be taken care of elsewhere */
906
8ebc5c01 907 /* clean up after study() */
3280af22 908 SvREFCNT_dec(PL_lastscream);
a0714e2c 909 PL_lastscream = NULL;
3280af22
NIS
910 Safefree(PL_screamfirst);
911 PL_screamfirst = 0;
912 Safefree(PL_screamnext);
913 PL_screamnext = 0;
8ebc5c01 914
7d5ea4e7
GS
915 /* float buffer */
916 Safefree(PL_efloatbuf);
bd61b366 917 PL_efloatbuf = NULL;
7d5ea4e7
GS
918 PL_efloatsize = 0;
919
8ebc5c01 920 /* startup and shutdown function lists */
3280af22 921 SvREFCNT_dec(PL_beginav);
5a837c8f 922 SvREFCNT_dec(PL_beginav_save);
3280af22 923 SvREFCNT_dec(PL_endav);
7d30b5c4 924 SvREFCNT_dec(PL_checkav);
ece599bd 925 SvREFCNT_dec(PL_checkav_save);
3280af22 926 SvREFCNT_dec(PL_initav);
7d49f689
NC
927 PL_beginav = NULL;
928 PL_beginav_save = NULL;
929 PL_endav = NULL;
930 PL_checkav = NULL;
931 PL_checkav_save = NULL;
932 PL_initav = NULL;
5618dfe8 933
8ebc5c01 934 /* shortcuts just get cleared */
a0714e2c
SS
935 PL_envgv = NULL;
936 PL_incgv = NULL;
937 PL_hintgv = NULL;
938 PL_errgv = NULL;
939 PL_argvgv = NULL;
940 PL_argvoutgv = NULL;
941 PL_stdingv = NULL;
942 PL_stderrgv = NULL;
943 PL_last_in_gv = NULL;
944 PL_replgv = NULL;
945 PL_DBgv = NULL;
946 PL_DBline = NULL;
947 PL_DBsub = NULL;
948 PL_DBsingle = NULL;
949 PL_DBtrace = NULL;
950 PL_DBsignal = NULL;
951 PL_DBassertion = NULL;
601f1833 952 PL_DBcv = NULL;
7d49f689 953 PL_dbargs = NULL;
5c284bb0 954 PL_debstash = NULL;
8ebc5c01 955
7a1c5554 956 SvREFCNT_dec(PL_argvout_stack);
7d49f689 957 PL_argvout_stack = NULL;
8ebc5c01 958
5c831c24 959 SvREFCNT_dec(PL_modglobal);
5c284bb0 960 PL_modglobal = NULL;
5c831c24 961 SvREFCNT_dec(PL_preambleav);
7d49f689 962 PL_preambleav = NULL;
5c831c24 963 SvREFCNT_dec(PL_subname);
a0714e2c 964 PL_subname = NULL;
5c831c24 965 SvREFCNT_dec(PL_linestr);
a0714e2c 966 PL_linestr = NULL;
ca0c25f6 967#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 968 SvREFCNT_dec(PL_pidstatus);
5c284bb0 969 PL_pidstatus = NULL;
ca0c25f6 970#endif
5c831c24 971 SvREFCNT_dec(PL_toptarget);
a0714e2c 972 PL_toptarget = NULL;
5c831c24 973 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
974 PL_bodytarget = NULL;
975 PL_formtarget = NULL;
5c831c24 976
d33b2eba 977 /* free locale stuff */
b9582b6a 978#ifdef USE_LOCALE_COLLATE
d33b2eba 979 Safefree(PL_collation_name);
bd61b366 980 PL_collation_name = NULL;
b9582b6a 981#endif
d33b2eba 982
b9582b6a 983#ifdef USE_LOCALE_NUMERIC
d33b2eba 984 Safefree(PL_numeric_name);
bd61b366 985 PL_numeric_name = NULL;
a453c169 986 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 987 PL_numeric_radix_sv = NULL;
b9582b6a 988#endif
d33b2eba 989
5c831c24
GS
990 /* clear utf8 character classes */
991 SvREFCNT_dec(PL_utf8_alnum);
992 SvREFCNT_dec(PL_utf8_alnumc);
993 SvREFCNT_dec(PL_utf8_ascii);
994 SvREFCNT_dec(PL_utf8_alpha);
995 SvREFCNT_dec(PL_utf8_space);
996 SvREFCNT_dec(PL_utf8_cntrl);
997 SvREFCNT_dec(PL_utf8_graph);
998 SvREFCNT_dec(PL_utf8_digit);
999 SvREFCNT_dec(PL_utf8_upper);
1000 SvREFCNT_dec(PL_utf8_lower);
1001 SvREFCNT_dec(PL_utf8_print);
1002 SvREFCNT_dec(PL_utf8_punct);
1003 SvREFCNT_dec(PL_utf8_xdigit);
1004 SvREFCNT_dec(PL_utf8_mark);
1005 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1006 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1007 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1008 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1009 SvREFCNT_dec(PL_utf8_idstart);
1010 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1011 PL_utf8_alnum = NULL;
1012 PL_utf8_alnumc = NULL;
1013 PL_utf8_ascii = NULL;
1014 PL_utf8_alpha = NULL;
1015 PL_utf8_space = NULL;
1016 PL_utf8_cntrl = NULL;
1017 PL_utf8_graph = NULL;
1018 PL_utf8_digit = NULL;
1019 PL_utf8_upper = NULL;
1020 PL_utf8_lower = NULL;
1021 PL_utf8_print = NULL;
1022 PL_utf8_punct = NULL;
1023 PL_utf8_xdigit = NULL;
1024 PL_utf8_mark = NULL;
1025 PL_utf8_toupper = NULL;
1026 PL_utf8_totitle = NULL;
1027 PL_utf8_tolower = NULL;
1028 PL_utf8_tofold = NULL;
1029 PL_utf8_idstart = NULL;
1030 PL_utf8_idcont = NULL;
5c831c24 1031
971a9dd3
GS
1032 if (!specialWARN(PL_compiling.cop_warnings))
1033 SvREFCNT_dec(PL_compiling.cop_warnings);
a0714e2c 1034 PL_compiling.cop_warnings = NULL;
ac27b0f5
NIS
1035 if (!specialCopIO(PL_compiling.cop_io))
1036 SvREFCNT_dec(PL_compiling.cop_io);
a0714e2c 1037 PL_compiling.cop_io = NULL;
05ec9bb3
NIS
1038 CopFILE_free(&PL_compiling);
1039 CopSTASH_free(&PL_compiling);
5c831c24 1040
a0d0e21e 1041 /* Prepare to destruct main symbol table. */
5f05dabc 1042
3280af22
NIS
1043 hv = PL_defstash;
1044 PL_defstash = 0;
a0d0e21e 1045 SvREFCNT_dec(hv);
5c831c24 1046 SvREFCNT_dec(PL_curstname);
a0714e2c 1047 PL_curstname = NULL;
a0d0e21e 1048
5a844595
GS
1049 /* clear queued errors */
1050 SvREFCNT_dec(PL_errors);
a0714e2c 1051 PL_errors = NULL;
5a844595 1052
a0d0e21e 1053 FREETMPS;
0453d815 1054 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1055 if (PL_scopestack_ix != 0)
9014280d 1056 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1057 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1058 (long)PL_scopestack_ix);
1059 if (PL_savestack_ix != 0)
9014280d 1060 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1061 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1062 (long)PL_savestack_ix);
1063 if (PL_tmps_floor != -1)
9014280d 1064 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1065 (long)PL_tmps_floor + 1);
a0d0e21e 1066 if (cxstack_ix != -1)
9014280d 1067 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1068 (long)cxstack_ix + 1);
a0d0e21e 1069 }
8990e307
LW
1070
1071 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1072 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1073 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1074
1075 /* the 2 is for PL_fdpid and PL_strtab */
1076 while (PL_sv_count > 2 && sv_clean_all())
1077 ;
1078
d33b2eba
GS
1079 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1080 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1081 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1082 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1083
d4777f27
GS
1084 AvREAL_off(PL_fdpid); /* no surviving entries */
1085 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1086 PL_fdpid = NULL;
d33b2eba 1087
6c644e78
GS
1088#ifdef HAVE_INTERP_INTERN
1089 sys_intern_clear();
1090#endif
1091
6e72f9df
PP
1092 /* Destruct the global string table. */
1093 {
1094 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1095 * so that sv_free() won't fail on them.
80459961
NC
1096 * Now that the global string table is using a single hunk of memory
1097 * for both HE and HEK, we either need to explicitly unshare it the
1098 * correct way, or actually free things here.
6e72f9df 1099 */
80459961
NC
1100 I32 riter = 0;
1101 const I32 max = HvMAX(PL_strtab);
c4420975 1102 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1103 HE *hent = array[0];
1104
6e72f9df 1105 for (;;) {
0453d815 1106 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1107 HE * const next = HeNEXT(hent);
9014280d 1108 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1109 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1110 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1111 Safefree(hent);
1112 hent = next;
6e72f9df
PP
1113 }
1114 if (!hent) {
1115 if (++riter > max)
1116 break;
1117 hent = array[riter];
1118 }
1119 }
80459961
NC
1120
1121 Safefree(array);
1122 HvARRAY(PL_strtab) = 0;
1123 HvTOTALKEYS(PL_strtab) = 0;
1124 HvFILL(PL_strtab) = 0;
6e72f9df 1125 }
3280af22 1126 SvREFCNT_dec(PL_strtab);
6e72f9df 1127
e652bb2f 1128#ifdef USE_ITHREADS
c21d1a0f 1129 /* free the pointer tables used for cloning */
a0739874 1130 ptr_table_free(PL_ptr_table);
bf9cdc68 1131 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1132#endif
a0739874 1133
d33b2eba
GS
1134 /* free special SVs */
1135
1136 SvREFCNT(&PL_sv_yes) = 0;
1137 sv_clear(&PL_sv_yes);
1138 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1139 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1140
1141 SvREFCNT(&PL_sv_no) = 0;
1142 sv_clear(&PL_sv_no);
1143 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1144 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1145
9f375a43
DM
1146 {
1147 int i;
1148 for (i=0; i<=2; i++) {
1149 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1150 sv_clear(PERL_DEBUG_PAD(i));
1151 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1152 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1153 }
1154 }
1155
0453d815 1156 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1157 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1158
eba0f806
DM
1159#ifdef DEBUG_LEAKING_SCALARS
1160 if (PL_sv_count != 0) {
1161 SV* sva;
1162 SV* sv;
1163 register SV* svend;
1164
1165 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1166 svend = &sva[SvREFCNT(sva)];
1167 for (sv = sva + 1; sv < svend; ++sv) {
1168 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1169 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1170 " flags=0x%"UVxf
fd0854ff
DM
1171 " refcnt=%"UVuf pTHX__FORMAT "\n"
1172 "\tallocated at %s:%d %s %s%s\n",
1173 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1174 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1175 sv->sv_debug_line,
1176 sv->sv_debug_inpad ? "for" : "by",
1177 sv->sv_debug_optype ?
1178 PL_op_name[sv->sv_debug_optype]: "(none)",
1179 sv->sv_debug_cloned ? " (cloned)" : ""
1180 );
2aa47728 1181#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1182 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1183#endif
eba0f806
DM
1184 }
1185 }
1186 }
1187 }
2aa47728
NC
1188#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1189 {
1190 int status;
1191 fd_set rset;
1192 /* Wait for up to 4 seconds for child to terminate.
1193 This seems to be the least effort way of timing out on reaping
1194 its exit status. */
1195 struct timeval waitfor = {4, 0};
41e4abd8 1196 int sock = PL_dumper_fd;
2aa47728
NC
1197
1198 shutdown(sock, 1);
1199 FD_ZERO(&rset);
1200 FD_SET(sock, &rset);
1201 select(sock + 1, &rset, NULL, NULL, &waitfor);
1202 waitpid(child, &status, WNOHANG);
1203 close(sock);
1204 }
1205#endif
eba0f806 1206#endif
bf9cdc68 1207 PL_sv_count = 0;
eba0f806
DM
1208
1209
56a2bab7 1210#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1211 /* No more IO - including error messages ! */
1212 PerlIO_cleanup(aTHX);
1213#endif
1214
9f4bd222 1215 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1216 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1217 for no arg - and will try and SvREFCNT_dec it.
1218 */
1219 SvREFCNT(&PL_sv_undef) = 0;
1220 SvREADONLY_off(&PL_sv_undef);
1221
3280af22 1222 Safefree(PL_origfilename);
bd61b366 1223 PL_origfilename = NULL;
3280af22 1224 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1225 PL_reg_start_tmp = (char**)NULL;
1226 PL_reg_start_tmpl = 0;
43c5f42d 1227 Safefree(PL_reg_curpm);
82ba1be6 1228 Safefree(PL_reg_poscache);
dd28f7bb 1229 free_tied_hv_pool();
3280af22 1230 Safefree(PL_op_mask);
cf36064f 1231 Safefree(PL_psig_ptr);
bf9cdc68 1232 PL_psig_ptr = (SV**)NULL;
cf36064f 1233 Safefree(PL_psig_name);
bf9cdc68 1234 PL_psig_name = (SV**)NULL;
2c2666fc 1235 Safefree(PL_bitcount);
bd61b366 1236 PL_bitcount = NULL;
ce08f86c 1237 Safefree(PL_psig_pend);
bf9cdc68 1238 PL_psig_pend = (int*)NULL;
a0714e2c 1239 PL_formfeed = NULL;
6e72f9df 1240 nuke_stacks();
bf9cdc68
RG
1241 PL_tainting = FALSE;
1242 PL_taint_warn = FALSE;
3280af22 1243 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1244 PL_debug = 0;
ac27b0f5 1245
a0d0e21e 1246 DEBUG_P(debprofdump());
d33b2eba 1247
e5dd39fc 1248#ifdef USE_REENTRANT_API
10bc17b6 1249 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1250#endif
1251
612f20c3
GS
1252 sv_free_arenas();
1253
fc36a67e
PP
1254 /* As the absolutely last thing, free the non-arena SV for mess() */
1255
3280af22 1256 if (PL_mess_sv) {
f350b448
NC
1257 /* we know that type == SVt_PVMG */
1258
9c63abab 1259 /* it could have accumulated taint magic */
f350b448
NC
1260 MAGIC* mg;
1261 MAGIC* moremagic;
1262 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1263 moremagic = mg->mg_moremagic;
1264 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1265 && mg->mg_len >= 0)
1266 Safefree(mg->mg_ptr);
1267 Safefree(mg);
9c63abab 1268 }
f350b448 1269
fc36a67e 1270 /* we know that type >= SVt_PV */
8bd4d4c5 1271 SvPV_free(PL_mess_sv);
3280af22
NIS
1272 Safefree(SvANY(PL_mess_sv));
1273 Safefree(PL_mess_sv);
a0714e2c 1274 PL_mess_sv = NULL;
fc36a67e 1275 }
37038d91 1276 return STATUS_EXIT;
79072805
LW
1277}
1278
954c1994
GS
1279/*
1280=for apidoc perl_free
1281
1282Releases a Perl interpreter. See L<perlembed>.
1283
1284=cut
1285*/
1286
79072805 1287void
0cb96387 1288perl_free(pTHXx)
79072805 1289{
7cb608b5
NC
1290#ifdef PERL_TRACK_MEMPOOL
1291 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1292 thread at thread exit. */
1293 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1294 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1295#endif
1296
acfe0abc 1297#if defined(WIN32) || defined(NETWARE)
7af12a34 1298 {
ce3e5b80 1299# if defined(PERL_IMPLICIT_SYS)
acfe0abc 1300# ifdef NETWARE
7af12a34 1301 void *host = nw_internal_host;
acfe0abc 1302# else
7af12a34 1303 void *host = w32_internal_host;
acfe0abc 1304# endif
7af12a34 1305 PerlMem_free(aTHXx);
acfe0abc 1306# ifdef NETWARE
7af12a34 1307 nw_delete_internal_host(host);
acfe0abc 1308# else
7af12a34 1309 win32_delete_internal_host(host);
acfe0abc 1310# endif
7af12a34 1311 }
1c0ca838
GS
1312# else
1313 PerlMem_free(aTHXx);
1314# endif
acfe0abc
GS
1315#else
1316 PerlMem_free(aTHXx);
76e3520e 1317#endif
79072805
LW
1318}
1319
aebd1ac7
GA
1320#if defined(USE_5005THREADS) || defined(USE_ITHREADS)
1321/* provide destructors to clean up the thread key when libperl is unloaded */
1322#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1323
110d3f98 1324#if defined(__hpux) && __ux_version > 1020 && !defined(__GNUC__)
aebd1ac7
GA
1325#pragma fini "perl_fini"
1326#endif
1327
0dbb1585
AL
1328static void
1329#if defined(__GNUC__)
1330__attribute__((destructor))
aebd1ac7 1331#endif
de009b76 1332perl_fini(void)
aebd1ac7 1333{
27da23d5 1334 dVAR;
aebd1ac7
GA
1335 if (PL_curinterp)
1336 FREE_THREAD_KEY;
1337}
1338
1339#endif /* WIN32 */
1340#endif /* THREADS */
1341
4b556e6c 1342void
864dbfa3 1343Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1344{
97aff369 1345 dVAR;
3280af22
NIS
1346 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1347 PL_exitlist[PL_exitlistlen].fn = fn;
1348 PL_exitlist[PL_exitlistlen].ptr = ptr;
1349 ++PL_exitlistlen;
4b556e6c
JD
1350}
1351
56cf6df8
RGS
1352#ifdef HAS_PROCSELFEXE
1353/* This is a function so that we don't hold on to MAXPATHLEN
1354 bytes of stack longer than necessary
1355 */
1356STATIC void
e1ec3a88 1357S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1358{
1359 char buf[MAXPATHLEN];
1360 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1361
1362 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1363 includes a spurious NUL which will cause $^X to fail in system
1364 or backticks (this will prevent extensions from being built and
1365 many tests from working). readlink is not meant to add a NUL.
1366 Normal readlink works fine.
1367 */
1368 if (len > 0 && buf[len-1] == '\0') {
1369 len--;
1370 }
1371
1372 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1373 returning the text "unknown" from the readlink rather than the path
1374 to the executable (or returning an error from the readlink). Any valid
1375 path has a '/' in it somewhere, so use that to validate the result.
1376 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1377 */
1378 if (len > 0 && memchr(buf, '/', len)) {
1379 sv_setpvn(sv,buf,len);
1380 }
1381 else {
1382 sv_setpv(sv,arg0);
1383 }
1384}
1385#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1386
1387STATIC void
1388S_set_caret_X(pTHX) {
97aff369 1389 dVAR;
fafc274c 1390 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1391 if (tmpgv) {
1392#ifdef HAS_PROCSELFEXE
1393 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1394#else
1395#ifdef OS2
c69033f2 1396 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1397#else
c69033f2 1398 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1399#endif
1400#endif
1401 }
1402}
1403
954c1994
GS
1404/*
1405=for apidoc perl_parse
1406
1407Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1408
1409=cut
1410*/
1411
79072805 1412int
0cb96387 1413perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1414{
27da23d5 1415 dVAR;
6224f72b 1416 I32 oldscope;
6224f72b 1417 int ret;
db36c5a1 1418 dJMPENV;
8d063cd8 1419
9d4ba2ae
AL
1420 PERL_UNUSED_VAR(my_perl);
1421
a687059c
LW
1422#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1423#ifdef IAMSUID
1424#undef IAMSUID
cea2e8a9 1425 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1426setuid perl scripts securely.\n");
ae3f3efd 1427#endif /* IAMSUID */
a687059c
LW
1428#endif
1429
b0891165
JH
1430#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1431 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1432 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1433 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1434 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1435 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1436 if (!PL_rehash_seed_set)
1437 PL_rehash_seed = get_hash_seed();
b0891165 1438 {
9d4ba2ae 1439 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1440
1b6737cc
AL
1441 if (s && (atoi(s) == 1))
1442 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1443 }
1444#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1445
3280af22 1446 PL_origargc = argc;
e2975953 1447 PL_origargv = argv;
a0d0e21e 1448
a2722ac9
GA
1449 if (PL_origalen != 0) {
1450 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1451 }
1452 else {
3cb9023d
JH
1453 /* Set PL_origalen be the sum of the contiguous argv[]
1454 * elements plus the size of the env in case that it is
e9137a8e 1455 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1456 * as the maximum modifiable length of $0. In the worst case
1457 * the area we are able to modify is limited to the size of
43c32782 1458 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1459 * --jhi */
e1ec3a88 1460 const char *s = NULL;
54bfe034 1461 int i;
1b6737cc 1462 const UV mask =
7d8e7db3 1463 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1464 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1465 const UV aligned =
43c32782
JH
1466 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1467
1468 /* See if all the arguments are contiguous in memory. Note
1469 * that 'contiguous' is a loose term because some platforms
1470 * align the argv[] and the envp[]. If the arguments look
1471 * like non-aligned, assume that they are 'strictly' or
1472 * 'traditionally' contiguous. If the arguments look like
1473 * aligned, we just check that they are within aligned
1474 * PTRSIZE bytes. As long as no system has something bizarre
1475 * like the argv[] interleaved with some other data, we are
1476 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1477 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1478 while (*s) s++;
1479 for (i = 1; i < PL_origargc; i++) {
1480 if ((PL_origargv[i] == s + 1
43c32782 1481#ifdef OS2
c8941eeb 1482 || PL_origargv[i] == s + 2
43c32782 1483#endif
c8941eeb
JH
1484 )
1485 ||
1486 (aligned &&
1487 (PL_origargv[i] > s &&
1488 PL_origargv[i] <=
1489 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1490 )
1491 {
1492 s = PL_origargv[i];
1493 while (*s) s++;
1494 }
1495 else
1496 break;
54bfe034 1497 }
54bfe034 1498 }
3cb9023d 1499 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1500 if (s && PL_origenviron) {
43c32782
JH
1501 if ((PL_origenviron[0] == s + 1
1502#ifdef OS2
1503 || (PL_origenviron[0] == s + 9 && (s += 8))
1504#endif
1505 )
1506 ||
1507 (aligned &&
1508 (PL_origenviron[0] > s &&
1509 PL_origenviron[0] <=
1510 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1511 )
1512 {
1513#ifndef OS2
1514 s = PL_origenviron[0];
1515 while (*s) s++;
1516#endif
bd61b366 1517 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1518 /* Force copy of environment. */
1519 for (i = 1; PL_origenviron[i]; i++) {
1520 if (PL_origenviron[i] == s + 1
1521 ||
1522 (aligned &&
1523 (PL_origenviron[i] > s &&
1524 PL_origenviron[i] <=
1525 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1526 )
1527 {
1528 s = PL_origenviron[i];
1529 while (*s) s++;
1530 }
1531 else
1532 break;
54bfe034 1533 }
43c32782 1534 }
54bfe034 1535 }
2d2af554 1536 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1537 }
1538
3280af22 1539 if (PL_do_undump) {
a0d0e21e
LW
1540
1541 /* Come here if running an undumped a.out. */
1542
3280af22
NIS
1543 PL_origfilename = savepv(argv[0]);
1544 PL_do_undump = FALSE;
a0d0e21e 1545 cxstack_ix = -1; /* start label stack again */
748a9306 1546 init_ids();
b7975bdd
NC
1547 assert (!PL_tainted);
1548 TAINT;
1549 S_set_caret_X(aTHX);
1550 TAINT_NOT;
a0d0e21e
LW
1551 init_postdump_symbols(argc,argv,env);
1552 return 0;
1553 }
1554
3280af22 1555 if (PL_main_root) {
3280af22
NIS
1556 op_free(PL_main_root);
1557 PL_main_root = Nullop;
ff0cee69 1558 }
3280af22
NIS
1559 PL_main_start = Nullop;
1560 SvREFCNT_dec(PL_main_cv);
601f1833 1561 PL_main_cv = NULL;
79072805 1562
3280af22
NIS
1563 time(&PL_basetime);
1564 oldscope = PL_scopestack_ix;
599cee73 1565 PL_dowarn = G_WARN_OFF;
f86702cc 1566
14dd3ad8 1567 JMPENV_PUSH(ret);
6224f72b 1568 switch (ret) {
312caa8e 1569 case 0:
14dd3ad8 1570 parse_body(env,xsinit);
7d30b5c4
GS
1571 if (PL_checkav)
1572 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1573 ret = 0;
1574 break;
6224f72b
GS
1575 case 1:
1576 STATUS_ALL_FAILURE;
1577 /* FALL THROUGH */
1578 case 2:
1579 /* my_exit() was called */
3280af22 1580 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1581 LEAVE;
1582 FREETMPS;
3280af22 1583 PL_curstash = PL_defstash;
7d30b5c4
GS
1584 if (PL_checkav)
1585 call_list(oldscope, PL_checkav);
37038d91 1586 ret = STATUS_EXIT;
14dd3ad8 1587 break;
6224f72b 1588 case 3:
bf49b057 1589 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1590 ret = 1;
1591 break;
6224f72b 1592 }
14dd3ad8
GS
1593 JMPENV_POP;
1594 return ret;
1595}
1596
312caa8e 1597STATIC void *
14dd3ad8 1598S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1599{
27da23d5 1600 dVAR;
312caa8e 1601 int argc = PL_origargc;
8f42b153 1602 char **argv = PL_origargv;
e1ec3a88 1603 const char *scriptname = NULL;
312caa8e 1604 VOL bool dosearch = FALSE;
e1ec3a88 1605 const char *validarg = "";
312caa8e
CS
1606 register SV *sv;
1607 register char *s;
bd61b366 1608 const char *cddir = NULL;
ab019eaa 1609#ifdef USE_SITECUSTOMIZE
20ef40cf 1610 bool minus_f = FALSE;
ab019eaa 1611#endif
312caa8e 1612
3280af22 1613 sv_setpvn(PL_linestr,"",0);
396482e1 1614 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1615 SAVEFREESV(sv);
1616 init_main_stash();
54310121 1617
6224f72b
GS
1618 for (argc--,argv++; argc > 0; argc--,argv++) {
1619 if (argv[0][0] != '-' || !argv[0][1])
1620 break;
1621#ifdef DOSUID
1622 if (*validarg)
1623 validarg = " PHOOEY ";
1624 else
1625 validarg = argv[0];
ae3f3efd
PS
1626 /*
1627 * Can we rely on the kernel to start scripts with argv[1] set to
1628 * contain all #! line switches (the whole line)? (argv[0] is set to
1629 * the interpreter name, argv[2] to the script name; argv[3] and
1630 * above may contain other arguments.)
1631 */
13281fa4 1632#endif
6224f72b
GS
1633 s = argv[0]+1;
1634 reswitch:
1635 switch (*s) {
729a02f2 1636 case 'C':
1d5472a9
GS
1637#ifndef PERL_STRICT_CR
1638 case '\r':
1639#endif
6224f72b
GS
1640 case ' ':
1641 case '0':
1642 case 'F':
1643 case 'a':
1644 case 'c':
1645 case 'd':
1646 case 'D':
1647 case 'h':
1648 case 'i':
1649 case 'l':
1650 case 'M':
1651 case 'm':
1652 case 'n':
1653 case 'p':
1654 case 's':
1655 case 'u':
1656 case 'U':
1657 case 'v':
599cee73
PM
1658 case 'W':
1659 case 'X':
6224f72b 1660 case 'w':
06492da6 1661 case 'A':
97bd5664 1662 if ((s = moreswitches(s)))
6224f72b
GS
1663 goto reswitch;
1664 break;
33b78306 1665
1dbad523 1666 case 't':
22f7c9c9 1667 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1668 if( !PL_tainting ) {
1669 PL_taint_warn = TRUE;
1670 PL_tainting = TRUE;
1671 }
1672 s++;
1673 goto reswitch;
6224f72b 1674 case 'T':
22f7c9c9 1675 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1676 PL_tainting = TRUE;
317ea90d 1677 PL_taint_warn = FALSE;
6224f72b
GS
1678 s++;
1679 goto reswitch;
f86702cc 1680
bc9b29db
RH
1681 case 'E':
1682 PL_minus_E = TRUE;
1683 /* FALL THROUGH */
6224f72b 1684 case 'e':
bf4acbe4
GS
1685#ifdef MACOS_TRADITIONAL
1686 /* ignore -e for Dev:Pseudo argument */
1687 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1688 break;
bf4acbe4 1689#endif
a52eba0e 1690 forbid_setid('e', -1);
3280af22 1691 if (!PL_e_script) {
396482e1 1692 PL_e_script = newSVpvs("");
0cb96387 1693 filter_add(read_e_script, NULL);
6224f72b
GS
1694 }
1695 if (*++s)
3280af22 1696 sv_catpv(PL_e_script, s);
6224f72b 1697 else if (argv[1]) {
3280af22 1698 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1699 argc--,argv++;
1700 }
1701 else
bc9b29db 1702 Perl_croak(aTHX_ "No code specified for -%c", *s);
396482e1 1703 sv_catpvs(PL_e_script, "\n");
6224f72b 1704 break;
afe37c7d 1705
20ef40cf 1706 case 'f':
f5542d3a 1707#ifdef USE_SITECUSTOMIZE
20ef40cf 1708 minus_f = TRUE;
f5542d3a 1709#endif
20ef40cf
GA
1710 s++;
1711 goto reswitch;
1712
6224f72b 1713 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1714 forbid_setid('I', -1);
bd61b366 1715 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1716 argc--,argv++;
1717 }
6224f72b 1718 if (s && *s) {
0df16ed7 1719 STRLEN len = strlen(s);
aec46f14 1720 const char * const p = savepvn(s, len);
88fe16b2 1721 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1722 sv_catpvs(sv, "-I");
0df16ed7 1723 sv_catpvn(sv, p, len);
396482e1 1724 sv_catpvs(sv, " ");
6224f72b 1725 Safefree(p);
0df16ed7
GS
1726 }
1727 else
a67e862a 1728 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1729 break;
1730 case 'P':
a52eba0e 1731 forbid_setid('P', -1);
3280af22 1732 PL_preprocess = TRUE;
6224f72b
GS
1733 s++;
1734 goto reswitch;
1735 case 'S':
a52eba0e 1736 forbid_setid('S', -1);
6224f72b
GS
1737 dosearch = TRUE;
1738 s++;
1739 goto reswitch;
1740 case 'V':
7edfd0ef
NC
1741 {
1742 SV *opts_prog;
1743
1744 if (!PL_preambleav)
1745 PL_preambleav = newAV();
1746 av_push(PL_preambleav,
396482e1 1747 newSVpvs("use Config;"));
7edfd0ef
NC
1748 if (*++s != ':') {
1749 STRLEN opts;
1750
396482e1 1751 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1752#ifdef VMS
396482e1 1753 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1754#else
396482e1 1755 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1756#endif
7edfd0ef 1757 opts = SvCUR(opts_prog);
efcaa95b 1758
9cd7d3f2 1759 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1760# ifdef DEBUGGING
e2e4dbf1 1761 " DEBUGGING"
6224f72b 1762# endif
4f185743
NC
1763# ifdef DEBUG_LEAKING_SCALARS
1764 " DEBUG_LEAKING_SCALARS"
1765# endif
85e1fcb9 1766# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1767 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1768# endif
1769# ifdef FAKE_THREADS
e2e4dbf1 1770 " FAKE_THREADS"
85e1fcb9 1771# endif
6224f72b 1772# ifdef MULTIPLICITY
e2e4dbf1 1773 " MULTIPLICITY"
6224f72b 1774# endif
85e1fcb9 1775# ifdef MYMALLOC
e2e4dbf1 1776 " MYMALLOC"
85e1fcb9 1777# endif
3bcf5ed8
SP
1778# ifdef NO_MATHOMS
1779 " NO_MATHOMS"
1780# endif
85e1fcb9 1781# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1782 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1783# endif
1784# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1785 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1786# endif
1787# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1788 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1789# endif
1790# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1791 " PERL_IMPLICIT_SYS"
85e1fcb9
SH
1792# endif
1793# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1794 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1795# endif
1796# ifdef PERL_NEED_APPCTX
e2e4dbf1 1797 " PERL_NEED_APPCTX"
85e1fcb9
SH
1798# endif
1799# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1800 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1801# endif
1802# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1803 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1804# endif
9c0a4d5d
DM
1805# ifdef PERL_TRACK_MEMPOOL
1806 " PERL_TRACK_MEMPOOL"
1807# endif
417cd4a8
SP
1808# ifdef PERL_USE_SAFE_PUTENV
1809 " PERL_USE_SAFE_PUTENV"
1810# endif
ca0c25f6
NC
1811#ifdef PERL_USES_PL_PIDSTATUS
1812 " PERL_USES_PL_PIDSTATUS"
1813#endif
85e1fcb9 1814# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1815 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1816# endif
1817# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1818 " THREADS_HAVE_PIDS"
85e1fcb9 1819# endif
4d1ff10f 1820# ifdef USE_5005THREADS
e2e4dbf1 1821 " USE_5005THREADS"
b363f7ed 1822# endif
85e1fcb9 1823# ifdef USE_64_BIT_ALL
e2e4dbf1 1824 " USE_64_BIT_ALL"
ac5e8965 1825# endif
10cc9d2a 1826# ifdef USE_64_BIT_INT
e2e4dbf1 1827 " USE_64_BIT_INT"
10cc9d2a 1828# endif
85e1fcb9 1829# ifdef USE_ITHREADS
e2e4dbf1 1830 " USE_ITHREADS"
85e1fcb9
SH
1831# endif
1832# ifdef USE_LARGE_FILES
e2e4dbf1 1833 " USE_LARGE_FILES"
ac5e8965
JH
1834# endif
1835# ifdef USE_LONG_DOUBLE
e2e4dbf1 1836 " USE_LONG_DOUBLE"
ac5e8965 1837# endif
85e1fcb9 1838# ifdef USE_PERLIO
e2e4dbf1 1839 " USE_PERLIO"
53430762 1840# endif
85e1fcb9 1841# ifdef USE_REENTRANT_API
e2e4dbf1 1842 " USE_REENTRANT_API"
85e1fcb9
SH
1843# endif
1844# ifdef USE_SFIO
e2e4dbf1 1845 " USE_SFIO"
ac5e8965 1846# endif
20ef40cf 1847# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1848 " USE_SITECUSTOMIZE"
20ef40cf 1849# endif
85e1fcb9 1850# ifdef USE_SOCKS
e2e4dbf1 1851 " USE_SOCKS"
b363f7ed 1852# endif
e2e4dbf1 1853 );
efcaa95b 1854
7edfd0ef
NC
1855 while (SvCUR(opts_prog) > opts+76) {
1856 /* find last space after "options: " and before col 76
1857 */
efcaa95b 1858
7edfd0ef 1859 const char *space;
c4420975 1860 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1861 const char c = pv[opts+76];
1862 pv[opts+76] = '\0';
1863 space = strrchr(pv+opts+26, ' ');
1864 pv[opts+76] = c;
1865 if (!space) break; /* "Can't happen" */
efcaa95b 1866
7edfd0ef 1867 /* break the line before that space */
efcaa95b 1868
7edfd0ef 1869 opts = space - pv;
89529cee 1870 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1871 STR_WITH_LEN("\\n "));
7edfd0ef 1872 }
efcaa95b 1873
396482e1 1874 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1875
6224f72b 1876#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1877 if (LOCAL_PATCH_COUNT > 0) {
1878 int i;
396482e1 1879 sv_catpvs(opts_prog,
7edfd0ef
NC
1880 "\" Locally applied patches:\\n\",");
1881 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1882 if (PL_localpatches[i])
1883 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1884 0, PL_localpatches[i], 0);
1885 }
6224f72b 1886 }
6224f72b 1887#endif
7edfd0ef
NC
1888 Perl_sv_catpvf(aTHX_ opts_prog,
1889 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1890#ifdef __DATE__
1891# ifdef __TIME__
7edfd0ef
NC
1892 Perl_sv_catpvf(aTHX_ opts_prog,
1893 ",\" Compiled at %s %s\\n\"",__DATE__,
1894 __TIME__);
6224f72b 1895# else
7edfd0ef
NC
1896 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1897 __DATE__);
6224f72b
GS
1898# endif
1899#endif
396482e1 1900 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1901 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1902 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1903#ifdef __CYGWIN__
396482e1 1904 sv_catpvs(opts_prog,
7edfd0ef 1905 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1906#endif
396482e1 1907 sv_catpvs(opts_prog,
7edfd0ef
NC
1908 "print \" \\%ENV:\\n @env\\n\" if @env;"
1909 "print \" \\@INC:\\n @INC\\n\";");
1910 }
1911 else {
1912 ++s;
1913 opts_prog = Perl_newSVpvf(aTHX_
1914 "Config::config_vars(qw%c%s%c)",
1915 0, s, 0);
1916 s += strlen(s);
1917 }
1918 av_push(PL_preambleav, opts_prog);
1919 /* don't look for script or read stdin */
1920 scriptname = BIT_BUCKET;
1921 goto reswitch;
6224f72b 1922 }
6224f72b 1923 case 'x':
3280af22 1924 PL_doextract = TRUE;
6224f72b
GS
1925 s++;
1926 if (*s)
f4c556ac 1927 cddir = s;
6224f72b
GS
1928 break;
1929 case 0:
1930 break;
1931 case '-':
1932 if (!*++s || isSPACE(*s)) {
1933 argc--,argv++;
1934 goto switch_end;
1935 }
1936 /* catch use of gnu style long options */
1937 if (strEQ(s, "version")) {
dd374669 1938 s = (char *)"v";
6224f72b
GS
1939 goto reswitch;
1940 }
1941 if (strEQ(s, "help")) {
dd374669 1942 s = (char *)"h";
6224f72b
GS
1943 goto reswitch;
1944 }
1945 s--;
1946 /* FALL THROUGH */
1947 default:
cea2e8a9 1948 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1949 }
1950 }
6224f72b 1951 switch_end:
54310121 1952
f675dbe5
CB
1953 if (
1954#ifndef SECURE_INTERNAL_GETENV
1955 !PL_tainting &&
1956#endif
cf756827 1957 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1958 {
e1ec3a88 1959 const char *popt = s;
74288ac8
GS
1960 while (isSPACE(*s))
1961 s++;
317ea90d 1962 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1963 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1964 PL_tainting = TRUE;
317ea90d
MS
1965 PL_taint_warn = FALSE;
1966 }
74288ac8 1967 else {
bd61b366 1968 char *popt_copy = NULL;
74288ac8 1969 while (s && *s) {
4ea8f8fb 1970 char *d;
74288ac8
GS
1971 while (isSPACE(*s))
1972 s++;
1973 if (*s == '-') {
1974 s++;
1975 if (isSPACE(*s))
1976 continue;
1977 }
4ea8f8fb 1978 d = s;
74288ac8
GS
1979 if (!*s)
1980 break;
e4af53b0 1981 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 1982 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1983 while (++s && *s) {
1984 if (isSPACE(*s)) {
cf756827
GS
1985 if (!popt_copy) {
1986 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1987 s = popt_copy + (s - popt);
1988 d = popt_copy + (d - popt);
1989 }
4ea8f8fb
MS
1990 *s++ = '\0';
1991 break;
1992 }
1993 }
1c4db469 1994 if (*d == 't') {
317ea90d
MS
1995 if( !PL_tainting ) {
1996 PL_taint_warn = TRUE;
1997 PL_tainting = TRUE;
1998 }
1c4db469 1999 } else {
97bd5664 2000 moreswitches(d);
1c4db469 2001 }
6224f72b 2002 }
6224f72b
GS
2003 }
2004 }
a0d0e21e 2005
20ef40cf
GA
2006#ifdef USE_SITECUSTOMIZE
2007 if (!minus_f) {
2008 if (!PL_preambleav)
2009 PL_preambleav = newAV();
2010 av_unshift(PL_preambleav, 1);
2011 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
2012 }
2013#endif
2014
317ea90d
MS
2015 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
2016 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
2017 }
2018
6224f72b
GS
2019 if (!scriptname)
2020 scriptname = argv[0];
3280af22 2021 if (PL_e_script) {
6224f72b
GS
2022 argc++,argv--;
2023 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2024 }
bd61b366 2025 else if (scriptname == NULL) {
6224f72b
GS
2026#ifdef MSDOS
2027 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2028 moreswitches("h");
6224f72b
GS
2029#endif
2030 scriptname = "-";
2031 }
2032
b7975bdd
NC
2033 /* Set $^X early so that it can be used for relocatable paths in @INC */
2034 assert (!PL_tainted);
2035 TAINT;
2036 S_set_caret_X(aTHX);
2037 TAINT_NOT;
6224f72b
GS
2038 init_perllib();
2039
a52eba0e
NC
2040 {
2041 int suidscript;
2042 const int fdscript
2043 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2044
a52eba0e 2045 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2046
64ca3a65 2047#ifndef PERL_MICRO
a52eba0e
NC
2048# if defined(SIGCHLD) || defined(SIGCLD)
2049 {
2050# ifndef SIGCHLD
2051# define SIGCHLD SIGCLD
2052# endif
2053 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2054 if (sigstate == (Sighandler_t) SIG_IGN) {
2055 if (ckWARN(WARN_SIGNAL))
2056 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2057 "Can't ignore signal CHLD, forcing to default");
2058 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2059 }
0b5b802d 2060 }
a52eba0e 2061# endif
64ca3a65 2062#endif
0b5b802d 2063
a52eba0e 2064 if (PL_doextract
bf4acbe4 2065#ifdef MACOS_TRADITIONAL
a52eba0e 2066 || gMacPerl_AlwaysExtract
bf4acbe4 2067#endif
a52eba0e 2068 ) {
faef540c
NC
2069
2070 /* This will croak if suidscript is >= 0, as -x cannot be used with
2071 setuid scripts. */
2072 forbid_setid('x', suidscript);
2073 /* Hence you can't get here if suidscript >= 0 */
2074
2075 find_beginning();
a52eba0e
NC
2076 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2077 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2078 }
f4c556ac 2079 }
6224f72b 2080
561b68a9 2081 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2082 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2083 CvUNIQUE_on(PL_compcv);
2084
dd2155a4 2085 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 2086#ifdef USE_5005THREADS
533c011a 2087 CvOWNER(PL_compcv) = 0;
a02a5408 2088 Newx(CvMUTEXP(PL_compcv), 1, perl_mutex);
533c011a 2089 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 2090#endif /* USE_5005THREADS */
6224f72b 2091
0c4f7ff0 2092 boot_core_PerlIO();
6224f72b 2093 boot_core_UNIVERSAL();
09bef843 2094 boot_core_xsutils();
6224f72b
GS
2095
2096 if (xsinit)
acfe0abc 2097 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2098#ifndef PERL_MICRO
d0d72822 2099#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2100 init_os_extras();
6224f72b 2101#endif
64ca3a65 2102#endif
6224f72b 2103
29209bc5 2104#ifdef USE_SOCKS
1b9c9cf5
DH
2105# ifdef HAS_SOCKS5_INIT
2106 socks5_init(argv[0]);
2107# else
29209bc5 2108 SOCKSinit(argv[0]);
1b9c9cf5 2109# endif
ac27b0f5 2110#endif
29209bc5 2111
6224f72b
GS
2112 init_predump_symbols();
2113 /* init_postdump_symbols not currently designed to be called */
2114 /* more than once (ENV isn't cleared first, for example) */
2115 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2116 if (!PL_do_undump)
6224f72b
GS
2117 init_postdump_symbols(argc,argv,env);
2118
27da23d5
JH
2119 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2120 * or explicitly in some platforms.
085a54d9 2121 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2122 * look like the user wants to use UTF-8. */
a0fd4948 2123#if defined(__SYMBIAN32__)
27da23d5
JH
2124 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2125#endif
06e66572
JH
2126 if (PL_unicode) {
2127 /* Requires init_predump_symbols(). */
a05d7ebb 2128 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2129 IO* io;
2130 PerlIO* fp;
2131 SV* sv;
2132
a05d7ebb 2133 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2134 * and the default open disciplines. */
a05d7ebb
JH
2135 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2136 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2137 (fp = IoIFP(io)))
2138 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2139 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2140 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2141 (fp = IoOFP(io)))
2142 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2143 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2144 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2145 (fp = IoOFP(io)))
2146 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2147 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2148 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2149 SVt_PV)))) {
a05d7ebb
JH
2150 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2151 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2152 if (in) {
2153 if (out)
2154 sv_setpvn(sv, ":utf8\0:utf8", 11);
2155 else
2156 sv_setpvn(sv, ":utf8\0", 6);
2157 }
2158 else if (out)
2159 sv_setpvn(sv, "\0:utf8", 6);
2160 SvSETMAGIC(sv);
2161 }
b310b053
JH
2162 }
2163 }
2164
4ffa73a3
JH
2165 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2166 if (strEQ(s, "unsafe"))
2167 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2168 else if (strEQ(s, "safe"))
2169 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2170 else
2171 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2172 }
2173
6224f72b
GS
2174 init_lexer();
2175
2176 /* now parse the script */
2177
93189314 2178 SETERRNO(0,SS_NORMAL);
3280af22 2179 PL_error_count = 0;
bf4acbe4
GS
2180#ifdef MACOS_TRADITIONAL
2181 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2182 if (PL_minus_c)
2183 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2184 else {
2185 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2186 MacPerl_MPWFileName(PL_origfilename));
2187 }
2188 }
2189#else
3280af22
NIS
2190 if (yyparse() || PL_error_count) {
2191 if (PL_minus_c)
cea2e8a9 2192 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2193 else {
cea2e8a9 2194 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2195 PL_origfilename);
6224f72b
GS
2196 }
2197 }
bf4acbe4 2198#endif
57843af0 2199 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2200 PL_curstash = PL_defstash;
2201 PL_preprocess = FALSE;
2202 if (PL_e_script) {
2203 SvREFCNT_dec(PL_e_script);
a0714e2c 2204 PL_e_script = NULL;
6224f72b
GS
2205 }
2206
3280af22 2207 if (PL_do_undump)
6224f72b
GS
2208 my_unexec();
2209
57843af0
GS
2210 if (isWARN_ONCE) {
2211 SAVECOPFILE(PL_curcop);
2212 SAVECOPLINE(PL_curcop);
3280af22 2213 gv_check(PL_defstash);
57843af0 2214 }
6224f72b
GS
2215
2216 LEAVE;
2217 FREETMPS;
2218
2219#ifdef MYMALLOC
2220 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2221 dump_mstats("after compilation:");
2222#endif
2223
2224 ENTER;
3280af22 2225 PL_restartop = 0;
312caa8e 2226 return NULL;
6224f72b
GS
2227}
2228
954c1994
GS
2229/*
2230=for apidoc perl_run
2231
2232Tells a Perl interpreter to run. See L<perlembed>.
2233
2234=cut
2235*/
2236
6224f72b 2237int
0cb96387 2238perl_run(pTHXx)
6224f72b 2239{
97aff369 2240 dVAR;
6224f72b 2241 I32 oldscope;
14dd3ad8 2242 int ret = 0;
db36c5a1 2243 dJMPENV;
6224f72b 2244
9d4ba2ae
AL
2245 PERL_UNUSED_ARG(my_perl);
2246
3280af22 2247 oldscope = PL_scopestack_ix;
96e176bf
CL
2248#ifdef VMS
2249 VMSISH_HUSHED = 0;
2250#endif
6224f72b 2251
14dd3ad8 2252 JMPENV_PUSH(ret);
6224f72b
GS
2253 switch (ret) {
2254 case 1:
2255 cxstack_ix = -1; /* start context stack again */
312caa8e 2256 goto redo_body;
14dd3ad8 2257 case 0: /* normal completion */
14dd3ad8
GS
2258 redo_body:
2259 run_body(oldscope);
14dd3ad8
GS
2260 /* FALL THROUGH */
2261 case 2: /* my_exit() */
3280af22 2262 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2263 LEAVE;
2264 FREETMPS;
3280af22 2265 PL_curstash = PL_defstash;
3a1ee7e8 2266 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2267 PL_endav && !PL_minus_c)
2268 call_list(oldscope, PL_endav);
6224f72b
GS
2269#ifdef MYMALLOC
2270 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2271 dump_mstats("after execution: ");
2272#endif
37038d91 2273 ret = STATUS_EXIT;
14dd3ad8 2274 break;
6224f72b 2275 case 3:
312caa8e
CS
2276 if (PL_restartop) {
2277 POPSTACK_TO(PL_mainstack);
2278 goto redo_body;
6224f72b 2279 }
bf49b057 2280 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2281 FREETMPS;
14dd3ad8
GS
2282 ret = 1;
2283 break;
6224f72b
GS
2284 }
2285
14dd3ad8
GS
2286 JMPENV_POP;
2287 return ret;
312caa8e
CS
2288}
2289
14dd3ad8 2290
dd374669 2291STATIC void
14dd3ad8
GS
2292S_run_body(pTHX_ I32 oldscope)
2293{
97aff369 2294 dVAR;
6224f72b 2295 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2296 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2297
3280af22 2298 if (!PL_restartop) {
6224f72b 2299 DEBUG_x(dump_all());
cf2782cd 2300#ifdef DEBUGGING
ecae49c0
NC
2301 if (!DEBUG_q_TEST)
2302 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2303#endif
b900a521
JH
2304 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2305 PTR2UV(thr)));
6224f72b 2306
3280af22 2307 if (PL_minus_c) {
bf4acbe4 2308#ifdef MACOS_TRADITIONAL
e69a2255
JH
2309 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2310 (gMacPerl_ErrorFormat ? "# " : ""),
2311 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2312#else
bf49b057 2313 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2314#endif
6224f72b
GS
2315 my_exit(0);
2316 }
3280af22 2317 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2318 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2319 if (PL_initav)
2320 call_list(oldscope, PL_initav);
6224f72b
GS
2321 }
2322
2323 /* do it */
2324
3280af22 2325 if (PL_restartop) {
533c011a 2326 PL_op = PL_restartop;
3280af22 2327 PL_restartop = 0;
cea2e8a9 2328 CALLRUNOPS(aTHX);
6224f72b 2329 }
3280af22
NIS
2330 else if (PL_main_start) {
2331 CvDEPTH(PL_main_cv) = 1;
533c011a 2332 PL_op = PL_main_start;
cea2e8a9 2333 CALLRUNOPS(aTHX);
6224f72b 2334 }
f6b3007c
JH
2335 my_exit(0);
2336 /* NOTREACHED */
6224f72b
GS
2337}
2338
954c1994 2339/*
ccfc67b7
JH
2340=head1 SV Manipulation Functions
2341
954c1994
GS
2342=for apidoc p||get_sv
2343
2344Returns the SV of the specified Perl scalar. If C<create> is set and the
2345Perl variable does not exist then it will be created. If C<create> is not
2346set and the variable does not exist then NULL is returned.
2347
2348=cut
2349*/
2350
6224f72b 2351SV*
864dbfa3 2352Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2353{
2354 GV *gv;
4d1ff10f 2355#ifdef USE_5005THREADS
6224f72b
GS
2356 if (name[1] == '\0' && !isALPHA(name[0])) {
2357 PADOFFSET tmp = find_threadsv(name);
411caa50 2358 if (tmp != NOT_IN_PAD)
6224f72b 2359 return THREADSV(tmp);
6224f72b 2360 }
4d1ff10f 2361#endif /* USE_5005THREADS */
6224f72b
GS
2362 gv = gv_fetchpv(name, create, SVt_PV);
2363 if (gv)
2364 return GvSV(gv);
a0714e2c 2365 return NULL;
6224f72b
GS
2366}
2367
954c1994 2368/*
ccfc67b7
JH
2369=head1 Array Manipulation Functions
2370
954c1994
GS
2371=for apidoc p||get_av
2372
2373Returns the AV of the specified Perl array. If C<create> is set and the
2374Perl variable does not exist then it will be created. If C<create> is not
2375set and the variable does not exist then NULL is returned.
2376
2377=cut
2378*/
2379
6224f72b 2380AV*
864dbfa3 2381Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2382{
c4420975 2383 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2384 if (create)
2385 return GvAVn(gv);
2386 if (gv)
2387 return GvAV(gv);
7d49f689 2388 return NULL;
6224f72b
GS
2389}
2390
954c1994 2391/*
ccfc67b7
JH
2392=head1 Hash Manipulation Functions
2393
954c1994
GS
2394=for apidoc p||get_hv
2395
2396Returns the HV of the specified Perl hash. If C<create> is set and the
2397Perl variable does not exist then it will be created. If C<create> is not
2398set and the variable does not exist then NULL is returned.
2399
2400=cut
2401*/
2402
6224f72b 2403HV*
864dbfa3 2404Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2405{
890ce7af 2406 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2407 if (create)
2408 return GvHVn(gv);
2409 if (gv)
2410 return GvHV(gv);
5c284bb0 2411 return NULL;
a0d0e21e
LW
2412}
2413
954c1994 2414/*
ccfc67b7
JH
2415=head1 CV Manipulation Functions
2416
954c1994
GS
2417=for apidoc p||get_cv
2418
2419Returns the CV of the specified Perl subroutine. If C<create> is set and
2420the Perl subroutine does not exist then it will be declared (which has the
2421same effect as saying C<sub name;>). If C<create> is not set and the
2422subroutine does not exist then NULL is returned.
2423
2424=cut
2425*/
2426
a0d0e21e 2427CV*
864dbfa3 2428Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2429{
c4420975 2430 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2431 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2432 /* XXX this is probably not what they think they're getting.
2433 * It has the same effect as "sub name;", i.e. just a forward
2434 * declaration! */
8ebc5c01 2435 if (create && !GvCVu(gv))
774d564b 2436 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2437 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 2438 Nullop,
a0d0e21e
LW
2439 Nullop);
2440 if (gv)
8ebc5c01 2441 return GvCVu(gv);
601f1833 2442 return NULL;
a0d0e21e
LW
2443}
2444
79072805
LW
2445/* Be sure to refetch the stack pointer after calling these routines. */
2446
954c1994 2447/*
ccfc67b7
JH
2448
2449=head1 Callback Functions
2450
954c1994
GS
2451=for apidoc p||call_argv
2452
2453Performs a callback to the specified Perl sub. See L<perlcall>.
2454
2455=cut
2456*/
2457
a0d0e21e 2458I32
8f42b153 2459Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2460
8ac85365
NIS
2461 /* See G_* flags in cop.h */
2462 /* null terminated arg list */
8990e307 2463{
97aff369 2464 dVAR;
a0d0e21e 2465 dSP;
8990e307 2466
924508f0 2467 PUSHMARK(SP);
a0d0e21e 2468 if (argv) {
8990e307 2469 while (*argv) {
a0d0e21e 2470 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2471 argv++;
2472 }
a0d0e21e 2473 PUTBACK;
8990e307 2474 }
864dbfa3 2475 return call_pv(sub_name, flags);
8990e307
LW
2476}
2477
954c1994
GS
2478/*
2479=for apidoc p||call_pv
2480
2481Performs a callback to the specified Perl sub. See L<perlcall>.
2482
2483=cut
2484*/
2485
a0d0e21e 2486I32
864dbfa3 2487Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2488 /* name of the subroutine */
2489 /* See G_* flags in cop.h */
a0d0e21e 2490{
864dbfa3 2491 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2492}
2493
954c1994
GS
2494/*
2495=for apidoc p||call_method
2496
2497Performs a callback to the specified Perl method. The blessed object must
2498be on the stack. See L<perlcall>.
2499
2500=cut
2501*/
2502
a0d0e21e 2503I32
864dbfa3 2504Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2505 /* name of the subroutine */
2506 /* See G_* flags in cop.h */
a0d0e21e 2507{
968b3946 2508 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2509}
2510
2511/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2512/*
2513=for apidoc p||call_sv
2514
2515Performs a callback to the Perl sub whose name is in the SV. See
2516L<perlcall>.
2517
2518=cut
2519*/
2520
a0d0e21e 2521I32
864dbfa3 2522Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2523 /* See G_* flags in cop.h */
a0d0e21e 2524{
27da23d5 2525 dVAR; dSP;
a0d0e21e 2526 LOGOP myop; /* fake syntax tree node */
968b3946 2527 UNOP method_op;
aa689395 2528 I32 oldmark;
13689cfe 2529 volatile I32 retval = 0;
a0d0e21e 2530 I32 oldscope;
54310121 2531 bool oldcatch = CATCH_GET;
6224f72b 2532 int ret;
c4420975 2533 OP* const oldop = PL_op;
db36c5a1 2534 dJMPENV;
1e422769 2535
a0d0e21e
LW
2536 if (flags & G_DISCARD) {
2537 ENTER;
2538 SAVETMPS;
2539 }
2540
aa689395 2541 Zero(&myop, 1, LOGOP);
54310121 2542 myop.op_next = Nullop;
f51d4af5 2543 if (!(flags & G_NOARGS))
aa689395 2544 myop.op_flags |= OPf_STACKED;
54310121
PP
2545 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2546 (flags & G_ARRAY) ? OPf_WANT_LIST :
2547 OPf_WANT_SCALAR);
462e5cf6 2548 SAVEOP();
533c011a 2549 PL_op = (OP*)&myop;
aa689395 2550
3280af22
NIS
2551 EXTEND(PL_stack_sp, 1);
2552 *++PL_stack_sp = sv;
aa689395 2553 oldmark = TOPMARK;
3280af22 2554 oldscope = PL_scopestack_ix;
a0d0e21e 2555
3280af22 2556 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2557 /* Handle first BEGIN of -d. */
3280af22 2558 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2559 /* Try harder, since this may have been a sighandler, thus
2560 * curstash may be meaningless. */
3280af22 2561 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2562 && !(flags & G_NODEBUG))
533c011a 2563 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2564
968b3946
GS
2565 if (flags & G_METHOD) {
2566 Zero(&method_op, 1, UNOP);
2567 method_op.op_next = PL_op;
2568 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2569 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2570 PL_op = (OP*)&method_op;
968b3946
GS
2571 }
2572
312caa8e 2573 if (!(flags & G_EVAL)) {
0cdb2077 2574 CATCH_SET(TRUE);
14dd3ad8 2575 call_body((OP*)&myop, FALSE);
312caa8e 2576 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2577 CATCH_SET(oldcatch);
312caa8e
CS
2578 }
2579 else {
d78bda3d 2580 myop.op_other = (OP*)&myop;
3280af22 2581 PL_markstack_ptr--;
4633a7c4
LW
2582 /* we're trying to emulate pp_entertry() here */
2583 {
c09156bb 2584 register PERL_CONTEXT *cx;
f54cb97a 2585 const I32 gimme = GIMME_V;
ac27b0f5 2586
4633a7c4
LW
2587 ENTER;
2588 SAVETMPS;
ac27b0f5 2589
1d76a5c3 2590 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2591 PUSHEVAL(cx, 0, 0);
533c011a 2592 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2593
faef0170 2594 PL_in_eval = EVAL_INEVAL;
4633a7c4 2595 if (flags & G_KEEPERR)
faef0170 2596 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2597 else
c69006e4 2598 sv_setpvn(ERRSV,"",0);
4633a7c4 2599 }
3280af22 2600 PL_markstack_ptr++;
a0d0e21e 2601
14dd3ad8 2602 JMPENV_PUSH(ret);
6224f72b
GS
2603 switch (ret) {
2604 case 0:
14dd3ad8
GS
2605 redo_body:
2606 call_body((OP*)&myop, FALSE);
312caa8e
CS
2607 retval = PL_stack_sp - (PL_stack_base + oldmark);
2608 if (!(flags & G_KEEPERR))
c69006e4 2609 sv_setpvn(ERRSV,"",0);
a0d0e21e 2610 break;
6224f72b 2611 case 1:
f86702cc 2612 STATUS_ALL_FAILURE;
a0d0e21e 2613 /* FALL THROUGH */
6224f72b 2614 case 2:
a0d0e21e 2615 /* my_exit() was called */
3280af22 2616 PL_curstash = PL_defstash;
a0d0e21e 2617 FREETMPS;
14dd3ad8 2618 JMPENV_POP;
cc3604b1 2619 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2620 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2621 my_exit_jump();
a0d0e21e 2622 /* NOTREACHED */
6224f72b 2623 case 3:
3280af22 2624 if (PL_restartop) {
533c011a 2625 PL_op = PL_restartop;
3280af22 2626 PL_restartop = 0;
312caa8e 2627 goto redo_body;
a0d0e21e 2628 }
3280af22 2629 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2630 if (flags & G_ARRAY)
2631 retval = 0;
2632 else {
2633 retval = 1;
3280af22 2634 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2635 }
312caa8e 2636 break;
a0d0e21e 2637 }
a0d0e21e 2638
3280af22 2639 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2640 SV **newsp;
2641 PMOP *newpm;
2642 I32 gimme;
c09156bb 2643 register PERL_CONTEXT *cx;
a0a2876f
LW
2644 I32 optype;
2645
2646 POPBLOCK(cx,newpm);
2647 POPEVAL(cx);
3280af22 2648 PL_curpm = newpm;
a0a2876f 2649 LEAVE;
9d4ba2ae
AL
2650 PERL_UNUSED_VAR(newsp);
2651 PERL_UNUSED_VAR(gimme);
2652 PERL_UNUSED_VAR(optype);
a0d0e21e 2653 }
14dd3ad8 2654 JMPENV_POP;
a0d0e21e 2655 }
1e422769 2656
a0d0e21e 2657 if (flags & G_DISCARD) {
3280af22 2658 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2659 retval = 0;
2660 FREETMPS;
2661 LEAVE;
2662 }
533c011a 2663 PL_op = oldop;
a0d0e21e
LW
2664 return retval;
2665}
2666
312caa8e 2667STATIC void
dd374669 2668S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2669{
97aff369 2670 dVAR;
312caa8e
CS
2671 if (PL_op == myop) {
2672 if (is_eval)
f807eda9 2673 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2674 else
f807eda9 2675 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2676 }
2677 if (PL_op)
cea2e8a9 2678 CALLRUNOPS(aTHX);
312caa8e
CS
2679}
2680
6e72f9df 2681/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2682
954c1994
GS
2683/*
2684=for apidoc p||eval_sv
2685
2686Tells Perl to C<eval> the string in the SV.
2687
2688=cut
2689*/
2690
a0d0e21e 2691I32
864dbfa3 2692Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2693
8ac85365 2694 /* See G_* flags in cop.h */
a0d0e21e 2695{
97aff369 2696 dVAR;
924508f0 2697 dSP;
a0d0e21e 2698 UNOP myop; /* fake syntax tree node */
8fa7f367 2699 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2700 volatile I32 retval = 0;
6224f72b 2701 int ret;
c4420975 2702 OP* const oldop = PL_op;
db36c5a1 2703 dJMPENV;
84902520 2704
4633a7c4
LW
2705 if (flags & G_DISCARD) {
2706 ENTER;
2707 SAVETMPS;
2708 }
2709
462e5cf6 2710 SAVEOP();
533c011a
NIS
2711 PL_op = (OP*)&myop;
2712 Zero(PL_op, 1, UNOP);
3280af22
NIS
2713 EXTEND(PL_stack_sp, 1);
2714 *++PL_stack_sp = sv;
79072805 2715
4633a7c4
LW
2716 if (!(flags & G_NOARGS))
2717 myop.op_flags = OPf_STACKED;
79072805 2718 myop.op_next = Nullop;
6e72f9df 2719 myop.op_type = OP_ENTEREVAL;
54310121
PP
2720 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2721 (flags & G_ARRAY) ? OPf_WANT_LIST :
2722 OPf_WANT_SCALAR);
6e72f9df
PP
2723 if (flags & G_KEEPERR)
2724 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2725
dedbcade
DM
2726 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2727 * before a PUSHEVAL, which corrupts the stack after a croak */
2728 TAINT_PROPER("eval_sv()");
2729
14dd3ad8 2730 JMPENV_PUSH(ret);
6224f72b
GS
2731 switch (ret) {
2732 case 0:
14dd3ad8
GS
2733 redo_body:
2734 call_body((OP*)&myop,TRUE);
312caa8e
CS
2735 retval = PL_stack_sp - (PL_stack_base + oldmark);
2736 if (!(flags & G_KEEPERR))
c69006e4 2737 sv_setpvn(ERRSV,"",0);
4633a7c4 2738 break;
6224f72b 2739 case 1:
f86702cc 2740 STATUS_ALL_FAILURE;
4633a7c4 2741 /* FALL THROUGH */
6224f72b 2742 case 2:
4633a7c4 2743 /* my_exit() was called */
3280af22 2744 PL_curstash = PL_defstash;
4633a7c4 2745 FREETMPS;
14dd3ad8 2746 JMPENV_POP;
cc3604b1 2747 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2748 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2749 my_exit_jump();
4633a7c4 2750 /* NOTREACHED */
6224f72b 2751 case 3:
3280af22 2752 if (PL_restartop) {
533c011a 2753 PL_op = PL_restartop;
3280af22 2754 PL_restartop = 0;
312caa8e 2755 goto redo_body;
4633a7c4 2756 }
3280af22 2757 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2758 if (flags & G_ARRAY)
2759 retval = 0;
2760 else {
2761 retval = 1;
3280af22 2762 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2763 }
312caa8e 2764 break;
4633a7c4
LW
2765 }
2766
14dd3ad8 2767 JMPENV_POP;
4633a7c4 2768 if (flags & G_DISCARD) {
3280af22 2769 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2770 retval = 0;
2771 FREETMPS;
2772 LEAVE;
2773 }
533c011a 2774 PL_op = oldop;
4633a7c4
LW
2775 return retval;
2776}
2777
954c1994
GS
2778/*
2779=for apidoc p||eval_pv
2780
2781Tells Perl to C<eval> the given string and return an SV* result.
2782
2783=cut
2784*/
2785
137443ea 2786SV*
864dbfa3 2787Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2788{
97aff369 2789 dVAR;
137443ea
PP
2790 dSP;
2791 SV* sv = newSVpv(p, 0);
2792
864dbfa3 2793 eval_sv(sv, G_SCALAR);
137443ea
PP
2794 SvREFCNT_dec(sv);
2795
2796 SPAGAIN;
2797 sv = POPs;
2798 PUTBACK;
2799
2d8e6c8d 2800 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2801 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2802 }
137443ea
PP
2803
2804 return sv;
2805}
2806
4633a7c4
LW
2807/* Require a module. */
2808
954c1994 2809/*
ccfc67b7
JH
2810=head1 Embedding Functions
2811
954c1994
GS
2812=for apidoc p||require_pv
2813
7d3fb230
BS
2814Tells Perl to C<require> the file named by the string argument. It is
2815analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2816implemented that way; consider using load_module instead.
954c1994 2817
7d3fb230 2818=cut */
954c1994 2819
4633a7c4 2820void
864dbfa3 2821Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2822{
97aff369 2823 dVAR;
d3acc0f7 2824 dSP;
97aff369 2825 SV* sv;
e788e7d3 2826 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2827 PUTBACK;
be41e5d9
NC
2828 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2829 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2830 SPAGAIN;
2831 POPSTACK;
79072805
LW
2832}
2833
79072805 2834void
e1ec3a88 2835Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2836{
71315bf2 2837 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2838
c4420975 2839 if (gv)
14befaf4 2840 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2841}
2842
76e3520e 2843STATIC void
e1ec3a88 2844S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2845{
ab821d7f 2846 /* This message really ought to be max 23 lines.
75c72d73 2847 * Removed -h because the user already knows that option. Others? */
fb73857a 2848
27da23d5 2849 static const char * const usage_msg[] = {
aefc56c5
SF
2850"-0[octal] specify record separator (\\0, if no argument)",
2851"-A[mod][=pattern] activate all/given assertions",
2852"-a autosplit mode with -n or -p (splits $_ into @F)",
2853"-C[number/list] enables the listed Unicode features",
2854"-c check syntax only (runs BEGIN and CHECK blocks)",
2855"-d[:debugger] run program under debugger",
2856"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2857"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2858"-E program like -e, but enables all optional features",
aefc56c5 2859"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2860"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2861"-i[extension] edit <> files in place (makes backup if extension supplied)",
2862"-Idirectory specify @INC/#include directory (several -I's allowed)",
2863"-l[octal] enable line ending processing, specifies line terminator",
2864"-[mM][-]module execute \"use/no module...\" before executing program",
2865"-n assume \"while (<>) { ... }\" loop around program",
2866"-p assume loop like -n but print line also, like sed",
2867"-P run program through C preprocessor before compilation",
2868"-s enable rudimentary parsing for switches after programfile",
2869"-S look for programfile using PATH environment variable",
2870"-t enable tainting warnings",
2871"-T enable tainting checks",
2872"-u dump core after parsing program",
2873"-U allow unsafe operations",
2874"-v print version, subversion (includes VERY IMPORTANT perl info)",
2875"-V[:variable] print configuration summary (or a single Config.pm variable)",
2876"-w enable many useful warnings (RECOMMENDED)",
2877"-W enable all warnings",
2878"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2879"-X disable all warnings",
fb73857a
PP
2880"\n",
2881NULL
2882};
27da23d5 2883 const char * const *p = usage_msg;
fb73857a 2884
b0e47665
GS
2885 PerlIO_printf(PerlIO_stdout(),
2886 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2887 name);
fb73857a 2888 while (*p)
b0e47665 2889 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2890}
2891
b4ab917c
DM
2892/* convert a string of -D options (or digits) into an int.
2893 * sets *s to point to the char after the options */
2894
2895#ifdef DEBUGGING
2896int
e1ec3a88 2897Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2898{
27da23d5 2899 static const char * const usage_msgd[] = {
e6e64d9b
JC
2900 " Debugging flag values: (see also -d)",
2901 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2902 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2903 " l Context (loop) stack processing",
2904 " t Trace execution",
2905 " o Method and overloading resolution",
2906 " c String/numeric conversions",
2907 " P Print profiling info, preprocessor command for -P, source file input state",
2908 " m Memory allocation",
2909 " f Format processing",
2910 " r Regular expression parsing and execution",
2911 " x Syntax tree dump",
3679267a 2912 " u Tainting checks",
e6e64d9b
JC
2913 " H Hash dump -- usurps values()",
2914 " X Scratchpad allocation",
2915 " D Cleaning up",
2916 " S Thread synchronization",
2917 " T Tokenising",
2918 " R Include reference counts of dumped variables (eg when using -Ds)",
2919 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2920 " v Verbose: use in conjunction with other flags",
2921 " C Copy On Write",
2922 " A Consistency checks on internal structures",
3679267a 2923 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2924 NULL
2925 };
b4ab917c
DM
2926 int i = 0;
2927 if (isALPHA(**s)) {
2928 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2929 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2930
2931 for (; isALNUM(**s); (*s)++) {
c4420975 2932 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2933 if (d)
2934 i |= 1 << (d - debopts);
2935 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2936 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2937 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2938 }
2939 }
e6e64d9b 2940 else if (isDIGIT(**s)) {
b4ab917c
DM
2941 i = atoi(*s);
2942 for (; isALNUM(**s); (*s)++) ;
2943 }
ddcf8bc1 2944 else if (givehelp) {
06e869a4 2945 const char *const *p = usage_msgd;
e6e64d9b
JC
2946 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2947 }
b4ab917c
DM
2948# ifdef EBCDIC
2949 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2950 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2951 "-Dp not implemented on this platform\n");
2952# endif
2953 return i;
2954}
2955#endif
2956
79072805
LW
2957/* This routine handles any switches that can be given during run */
2958
2959char *
97bd5664 2960Perl_moreswitches(pTHX_ char *s)
79072805 2961{
27da23d5 2962 dVAR;
84c133a0 2963 UV rschar;
79072805
LW
2964
2965 switch (*s) {
2966 case '0':
a863c7d1 2967 {
f2095865 2968 I32 flags = 0;
a3b680e6 2969 STRLEN numlen;
f2095865
JH
2970
2971 SvREFCNT_dec(PL_rs);
2972 if (s[1] == 'x' && s[2]) {
a3b680e6 2973 const char *e = s+=2;
f2095865
JH
2974 U8 *tmps;
2975
a3b680e6
AL
2976 while (*e)
2977 e++;
f2095865
JH
2978 numlen = e - s;
2979 flags = PERL_SCAN_SILENT_ILLDIGIT;
2980 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2981 if (s + numlen < e) {
2982 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2983 numlen = 0;
2984 s--;
2985 }
396482e1 2986 PL_rs = newSVpvs("");
c5661c80 2987 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2988 tmps = (U8*)SvPVX(PL_rs);
2989 uvchr_to_utf8(tmps, rschar);
2990 SvCUR_set(PL_rs, UNISKIP(rschar));
2991 SvUTF8_on(PL_rs);
2992 }
2993 else {
2994 numlen = 4;
2995 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2996 if (rschar & ~((U8)~0))
2997 PL_rs = &PL_sv_undef;
2998 else if (!rschar && numlen >= 2)
396482e1 2999 PL_rs = newSVpvs("");
f2095865
JH
3000 else {
3001 char ch = (char)rschar;
3002 PL_rs = newSVpvn(&ch, 1);
3003 }
3004 }
800633c3 3005 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3006 return s + numlen;
a863c7d1 3007 }
46487f74 3008 case 'C':
a05d7ebb 3009 s++;
dd374669 3010 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 3011 return s;
2304df62 3012 case 'F':
3280af22 3013 PL_minus_F = TRUE;
ebce5377
RGS
3014 PL_splitstr = ++s;
3015 while (*s && !isSPACE(*s)) ++s;
3016 *s = '\0';
3017 PL_splitstr = savepv(PL_splitstr);
2304df62 3018 return s;
79072805 3019 case 'a':
3280af22 3020 PL_minus_a = TRUE;
79072805
LW
3021 s++;
3022 return s;
3023 case 'c':
3280af22 3024 PL_minus_c = TRUE;
79072805
LW
3025 s++;
3026 return s;
3027 case 'd':
97bd5664 3028 forbid_setid('d', -1);
4633a7c4 3029 s++;
2cbb2ee1
RGS
3030
3031 /* -dt indicates to the debugger that threads will be used */
3032 if (*s == 't' && !isALNUM(s[1])) {
3033 ++s;
3034 my_setenv("PERL5DB_THREADED", "1");
3035 }
3036
70c94a19
RR
3037 /* The following permits -d:Mod to accepts arguments following an =
3038 in the fashion that -MSome::Mod does. */
3039 if (*s == ':' || *s == '=') {
06b5626a 3040 const char *start;
396482e1 3041 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3042 start = ++s;
3043 /* We now allow -d:Module=Foo,Bar */
3044 while(isALNUM(*s) || *s==':') ++s;
3045 if (*s != '=')
3046 sv_catpv(sv, start);
3047 else {
3048 sv_catpvn(sv, start, s-start);
0c5a913d 3049 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
70c94a19 3050 }
4633a7c4 3051 s += strlen(s);
184f32ec 3052 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3053 }
ed094faf 3054 if (!PL_perldb) {
3280af22 3055 PL_perldb = PERLDB_ALL;
a0d0e21e 3056 init_debugger();
ed094faf 3057 }
79072805
LW
3058 return s;
3059 case 'D':
0453d815 3060 {
79072805 3061#ifdef DEBUGGING
97bd5664 3062 forbid_setid('D', -1);
b4ab917c 3063 s++;
dd374669 3064 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3065#else /* !DEBUGGING */
0453d815 3066 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3067 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3068 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3069 for (s++; isALNUM(*s); s++) ;
79072805 3070#endif
79072805 3071 return s;
0453d815 3072 }
4633a7c4 3073 case 'h':
ac27b0f5 3074 usage(PL_origargv[0]);
7ca617d0 3075 my_exit(0);
79072805 3076 case 'i':
43c5f42d 3077 Safefree(PL_inplace);
c030f24b
GH
3078#if defined(__CYGWIN__) /* do backup extension automagically */
3079 if (*(s+1) == '\0') {
c86a4f2e 3080 PL_inplace = savepvs(".bak");
c030f24b
GH
3081 return s+1;
3082 }
3083#endif /* __CYGWIN__ */
3280af22 3084 PL_inplace = savepv(s+1);
a6e20a40
AL
3085 for (s = PL_inplace; *s && !isSPACE(*s); s++)
3086 ;
7b8d334a 3087 if (*s) {
fb73857a 3088 *s++ = '\0';
7b8d334a
GS
3089 if (*s == '-') /* Additional switches on #! line. */
3090 s++;
3091 }
fb73857a 3092 return s;
4e49a025 3093 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3094 forbid_setid('I', -1);
fb73857a
PP
3095 ++s;
3096 while (*s && isSPACE(*s))
3097 ++s;
3098 if (*s) {
774d564b 3099 char *e, *p;
0df16ed7
GS
3100 p = s;
3101 /* ignore trailing spaces (possibly followed by other switches) */
3102 do {
3103 for (e = p; *e && !isSPACE(*e); e++) ;
3104 p = e;
3105 while (isSPACE(*p))
3106 p++;
3107 } while (*p && *p != '-');
3108 e = savepvn(s, e-s);
88fe16b2 3109 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3110 Safefree(e);
3111 s = p;
3112 if (*s == '-')
3113 s++;
79072805
LW
3114 }
3115 else
a67e862a 3116 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3117 return s;
79072805 3118 case 'l':
3280af22 3119 PL_minus_l = TRUE;
79072805 3120 s++;
7889fe52
NIS
3121 if (PL_ors_sv) {
3122 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3123 PL_ors_sv = NULL;
7889fe52 3124 }
79072805 3125 if (isDIGIT(*s)) {
53305cf1 3126 I32 flags = 0;
a3b680e6 3127 STRLEN numlen;
396482e1 3128 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3129 numlen = 3 + (*s == '0');
3130 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3131 s += numlen;
3132 }
3133 else {
8bfdd7d9 3134 if (RsPARA(PL_rs)) {
396482e1 3135 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3136 }
3137 else {
8bfdd7d9 3138 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3139 }
79072805
LW
3140 }
3141 return s;
06492da6 3142 case 'A':
97bd5664 3143 forbid_setid('A', -1);
930366bd
RGS
3144 if (!PL_preambleav)
3145 PL_preambleav = newAV();
aefc56c5
SF
3146 s++;
3147 {
44f8325f 3148 char * const start = s;
396482e1 3149 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3150 while(isALNUM(*s) || *s == ':') ++s;
3151 if (s != start) {
396482e1 3152 sv_catpvs(sv, "::");
aefc56c5
SF
3153 sv_catpvn(sv, start, s-start);
3154 }
3155 if (*s == '=') {
0c5a913d 3156 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3157 s+=strlen(s);
3158 }
3159 else if (*s != '\0') {
551405c4 3160 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3161 }
06492da6 3162 av_push(PL_preambleav, sv);
aefc56c5 3163 return s;
06492da6 3164 }
1a30305b 3165 case 'M':
97bd5664 3166 forbid_setid('M', -1); /* XXX ? */
1a30305b
PP
3167 /* FALL THROUGH */
3168 case 'm':
97bd5664 3169 forbid_setid('m', -1); /* XXX ? */
1a30305b 3170 if (*++s) {
a5f75d66 3171 char *start;
11343788 3172 SV *sv;
e1ec3a88 3173 const char *use = "use ";
a5f75d66 3174 /* -M-foo == 'no foo' */
d0043bd1
NC
3175 /* Leading space on " no " is deliberate, to make both
3176 possibilities the same length. */
3177 if (*s == '-') { use = " no "; ++s; }
3178 sv = newSVpvn(use,4);
a5f75d66 3179 start = s;
1a30305b 3180 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3181 while(isALNUM(*s) || *s==':') ++s;
3182 if (*s != '=') {
11343788 3183 sv_catpv(sv, start);
c07a80fd
PP
3184 if (*(start-1) == 'm') {
3185 if (*s != '\0')
cea2e8a9 3186 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3187 sv_catpvs( sv, " ()");
c07a80fd
PP
3188 }
3189 } else {
6df41af2 3190 if (s == start)
be98fb35
GS
3191 Perl_croak(aTHX_ "Module name required with -%c option",
3192 s[-1]);
11343788 3193 sv_catpvn(sv, start, s-start);
396482e1
GA
3194 sv_catpvs(sv, " split(/,/,q");
3195 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3196 sv_catpv(sv, ++s);
396482e1 3197 sv_catpvs(sv, "\0)");
c07a80fd 3198 }
1a30305b 3199 s += strlen(s);
5c831c24 3200 if (!PL_preambleav)
3280af22
NIS
3201 PL_preambleav = newAV();
3202 av_push(PL_preambleav, sv);
1a30305b
PP
3203 }
3204 else
9e81e6a1 3205 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3206 return s;
79072805 3207 case 'n':
3280af22 3208 PL_minus_n = TRUE;
79072805
LW
3209 s++;
3210 return s;
3211 case 'p':
3280af22 3212 PL_minus_p = TRUE;
79072805
LW
3213 s++;
3214 return s;
3215 case 's':
97bd5664 3216 forbid_setid('s', -1);
3280af22 3217 PL_doswitches = TRUE;
79072805
LW
3218 s++;
3219 return s;
6537fe72
MS
3220 case 't':
3221 if (!PL_tainting)
22f7c9c9 3222 TOO_LATE_FOR('t');
6537fe72
MS
3223 s++;
3224 return s;
463ee0b2 3225 case 'T':
3280af22 3226 if (!PL_tainting)
22f7c9c9 3227 TOO_LATE_FOR('T');
463ee0b2
LW
3228 s++;
3229 return s;
79072805 3230 case 'u':
bf4acbe4
GS
3231#ifdef MACOS_TRADITIONAL
3232 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3233#endif
3280af22 3234 PL_do_undump = TRUE;
79072805
LW
3235 s++;
3236 return s;
3237 case 'U':
3280af22 3238 PL_unsafe = TRUE;
79072805
LW
3239 s++;
3240 return s;
3241 case 'v':
d7aa5382 3242 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3243 upg_version(PL_patchlevel);
8e9464f1 3244#if !defined(DGUX)
b0e47665 3245 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3246 Perl_form(aTHX_ "\nThis is perl, %"SVf
3247#ifdef PERL_PATCHNUM
3248 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3249#endif
3250 " built for %s",
d7aa5382
JP
3251 vstringify(PL_patchlevel),
3252 ARCHNAME));
8e9464f1
JH
3253#else /* DGUX */
3254/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3255 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3256 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3257 vstringify(PL_patchlevel)));
8e9464f1
JH
3258 PerlIO_printf(PerlIO_stdout(),
3259 Perl_form(aTHX_ " built under %s at %s %s\n",
3260 OSNAME, __DATE__, __TIME__));
3261 PerlIO_printf(PerlIO_stdout(),
3262 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3263 OSVERS));
8e9464f1
JH
3264#endif /* !DGUX */
3265
fb73857a
PP
3266#if defined(LOCAL_PATCH_COUNT)
3267 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3268 PerlIO_printf(PerlIO_stdout(),
3269 "\n(with %d registered patch%s, "
3270 "see perl -V for more detail)",
3271 (int)LOCAL_PATCH_COUNT,
3272 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3273#endif
1a30305b 3274
b0e47665 3275 PerlIO_printf(PerlIO_stdout(),
3246d7a3 3276 "\n\nCopyright 1987-2006, Larry Wall\n");
eae9c151
JH
3277#ifdef MACOS_TRADITIONAL
3278 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3279 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3280 "maintained by Chris Nandor\n");
eae9c151 3281#endif
79072805 3282#ifdef MSDOS
b0e47665
GS
3283 PerlIO_printf(PerlIO_stdout(),
3284 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3285#endif
3286#ifdef DJGPP
b0e47665
GS
3287 PerlIO_printf(PerlIO_stdout(),
3288 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3289 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3290#endif
79072805 3291#ifdef OS2
b0e47665
GS
3292 PerlIO_printf(PerlIO_stdout(),
3293 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3294 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3295#endif
79072805 3296#ifdef atarist
b0e47665
GS
3297 PerlIO_printf(PerlIO_stdout(),
3298 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3299#endif
a3f9223b 3300#ifdef __BEOS__
b0e47665
GS
3301 PerlIO_printf(PerlIO_stdout(),
3302 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3303#endif
1d84e8df 3304#ifdef MPE
b0e47665 3305 PerlIO_printf(PerlIO_stdout(),
e583a879 3306 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3307#endif
9d116dd7 3308#ifdef OEMVS
b0e47665
GS
3309 PerlIO_printf(PerlIO_stdout(),
3310 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3311#endif
495c5fdc 3312#ifdef __VOS__
b0e47665 3313 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3314 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3315#endif
092bebab 3316#ifdef __OPEN_VM
b0e47665
GS
3317 PerlIO_printf(PerlIO_stdout(),
3318 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3319#endif
a1a0e61e 3320#ifdef POSIX_BC
b0e47665
GS
3321 PerlIO_printf(PerlIO_stdout(),
3322 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3323#endif
61ae2fbf 3324#ifdef __MINT__
b0e47665
GS
3325 PerlIO_printf(PerlIO_stdout(),
3326 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3327#endif
f83d2536 3328#ifdef EPOC
b0e47665 3329 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3330 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3331#endif
e1caacb4 3332#ifdef UNDER_CE
b475b3e6
JH
3333 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3334 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3335 wce_hitreturn();
3336#endif
a0fd4948 3337#ifdef __SYMBIAN32__
27da23d5
JH
3338 PerlIO_printf(PerlIO_stdout(),
3339 "Symbian port by Nokia, 2004-2005\n");
3340#endif
baed7233
DL
3341#ifdef BINARY_BUILD_NOTICE
3342 BINARY_BUILD_NOTICE;
3343#endif
b0e47665
GS
3344 PerlIO_printf(PerlIO_stdout(),
3345 "\n\
79072805 3346Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3347GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3348Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3349this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3350Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3351 my_exit(0);
79072805 3352 case 'w':
599cee73 3353 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3354 PL_dowarn |= G_WARN_ON;
599cee73
PM
3355 s++;
3356 return s;
3357 case 'W':
ac27b0f5 3358 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3359 if (!specialWARN(PL_compiling.cop_warnings))
3360 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3361 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3362 s++;
3363 return s;
3364 case 'X':
ac27b0f5 3365 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3366 if (!specialWARN(PL_compiling.cop_warnings))
3367 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3368 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3369 s++;
3370 return s;
a0d0e21e 3371 case '*':
79072805
LW
3372 case ' ':
3373 if (s[1] == '-') /* Additional switches on #! line. */
3374 return s+2;
3375 break;
a0d0e21e 3376 case '-':
79072805 3377 case 0:
51882d45 3378#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3379 case '\r':
3380#endif
79072805
LW
3381 case '\n':
3382 case '\t':
3383 break;
aa689395
PP
3384#ifdef ALTERNATE_SHEBANG
3385 case 'S': /* OS/2 needs -S on "extproc" line. */
3386 break;
3387#endif
a0d0e21e 3388 case 'P':
3280af22 3389 if (PL_preprocess)
a0d0e21e
LW
3390 return s+1;
3391 /* FALL THROUGH */
79072805 3392 default:
cea2e8a9 3393 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3394 }
bd61b366 3395 return NULL;
79072805
LW
3396}
3397
3398/* compliments of Tom Christiansen */
3399
3400/* unexec() can be found in the Gnu emacs distribution */
ee580363 3401/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3402
3403void
864dbfa3 3404Perl_my_unexec(pTHX)
79072805
LW
3405{
3406#ifdef UNEXEC
46fc3d4c
PP
3407 SV* prog;
3408 SV* file;
ee580363 3409 int status = 1;
79072805
LW
3410 extern int etext;
3411
ee580363 3412 prog = newSVpv(BIN_EXP, 0);
396482e1 3413 sv_catpvs(prog, "/perl");
6b88bc9c 3414 file = newSVpv(PL_origfilename, 0);
396482e1 3415 sv_catpvs(file, ".perldump");
79072805 3416
ee580363
GS
3417 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3418 /* unexec prints msg to stderr in case of failure */
6ad3d225 3419 PerlProc_exit(status);
79072805 3420#else
a5f75d66
AD
3421# ifdef VMS
3422# include <lib$routines.h>
3423 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3424# elif defined(WIN32) || defined(__CYGWIN__)
3425 Perl_croak(aTHX_ "dump is not supported");
aa689395 3426# else
79072805 3427 ABORT(); /* for use with undump */
aa689395 3428# endif
a5f75d66 3429#endif
79072805
LW
3430}
3431
cb68f92d
GS
3432/* initialize curinterp */
3433STATIC void
cea2e8a9 3434S_init_interp(pTHX)
cb68f92d 3435{
97aff369 3436 dVAR;
acfe0abc
GS
3437#ifdef MULTIPLICITY
3438# define PERLVAR(var,type)
3439# define PERLVARA(var,n,type)
3440# if defined(PERL_IMPLICIT_CONTEXT)
3441# if defined(USE_5005THREADS)
3442# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
27da23d5 3443# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
3444# else /* !USE_5005THREADS */
3445# define PERLVARI(var,type,init) aTHX->var = init;
3446# define PERLVARIC(var,type,init) aTHX->var = init;
3447# endif /* USE_5005THREADS */
3967c732 3448# else
acfe0abc
GS
3449# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3450# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3451# endif
acfe0abc
GS
3452# include "intrpvar.h"
3453# ifndef USE_5005THREADS
3454# include "thrdvar.h"
3455# endif
3456# undef PERLVAR
3457# undef PERLVARA
3458# undef PERLVARI
3459# undef PERLVARIC
3460#else
3461# define PERLVAR(var,type)
3462# define PERLVARA(var,n,type)
3463# define PERLVARI(var,type,init) PL_##var = init;
3464# define PERLVARIC(var,type,init) PL_##var = init;
3465# include "intrpvar.h"
3466# ifndef USE_5005THREADS
3467# include "thrdvar.h"
3468# endif
3469# undef PERLVAR
3470# undef PERLVARA
3471# undef PERLVARI
3472# undef PERLVARIC
cb68f92d
GS
3473#endif
3474
cb68f92d
GS
3475}
3476
76e3520e 3477STATIC void
cea2e8a9 3478S_init_main_stash(pTHX)
79072805 3479{
97aff369 3480 dVAR;
463ee0b2 3481 GV *gv;
6e72f9df 3482
3280af22 3483 PL_curstash = PL_defstash = newHV();
23579a14
NC
3484 /* We know that the string "main" will be in the global shared string
3485 table, so it's a small saving to use it rather than allocate another
3486 8 bytes. */
18916d0d 3487 PL_curstname = newSVpvs_share("main");
fafc274c 3488 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3489 /* If we hadn't caused another reference to "main" to be in the shared
3490 string table above, then it would be worth reordering these two,
3491 because otherwise all we do is delete "main" from it as a consequence
3492 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3493 SvREFCNT_dec(GvHV(gv));
23579a14 3494 hv_name_set(PL_defstash, "main", 4, 0);
3280af22 3495 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3496 SvREADONLY_on(gv);