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Change 23753 wasn't quite a perfect refactoring, as it omitted calling
[perl5.git] / perl.c
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1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
fdf8c088 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 by Larry Wall and others
a687059c 5 *
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6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
a687059c 8 *
8d063cd8
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9 */
10
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11/*
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
13 */
45d8adaa 14
166f8a29
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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
NC
99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
2aa47728
NC
108#endif
109
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110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
d6f07c05
AL
140#define CALL_BODY_EVAL(myop) \
141 if (PL_op == (myop)) \
142 PL_op = Perl_pp_entereval(aTHX); \
143 if (PL_op) \
144 CALLRUNOPS(aTHX);
145
146#define CALL_BODY_SUB(myop) \
147 if (PL_op == (myop)) \
148 PL_op = Perl_pp_entersub(aTHX); \
149 if (PL_op) \
150 CALLRUNOPS(aTHX);
151
152#define CALL_LIST_BODY(cv) \
153 PUSHMARK(PL_stack_sp); \
154 call_sv((SV*)(cv), G_EVAL|G_DISCARD);
155
e6827a76 156static void
daa7d858 157S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 158{
27da23d5 159 dVAR;
e6827a76
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160 if (!PL_curinterp) {
161 PERL_SET_INTERP(my_perl);
3db8f154 162#if defined(USE_ITHREADS)
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163 INIT_THREADS;
164 ALLOC_THREAD_KEY;
165 PERL_SET_THX(my_perl);
166 OP_REFCNT_INIT;
71ad1b0c 167 HINTS_REFCNT_INIT;
e6827a76 168 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 169# endif
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170#ifdef PERL_IMPLICIT_CONTEXT
171 MUTEX_INIT(&PL_my_ctx_mutex);
172# endif
e6827a76 173 }
c0bce9aa
NC
174#if defined(USE_ITHREADS)
175 else
176#else
177 /* This always happens for non-ithreads */
178#endif
179 {
e6827a76
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180 PERL_SET_THX(my_perl);
181 }
182}
06d86050 183
32e30700
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184#ifdef PERL_IMPLICIT_SYS
185PerlInterpreter *
7766f137
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186perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
187 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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188 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
189 struct IPerlDir* ipD, struct IPerlSock* ipS,
190 struct IPerlProc* ipP)
191{
192 PerlInterpreter *my_perl;
9f653bb5 193 /* Newx() needs interpreter, so call malloc() instead */
32e30700 194 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 195 S_init_tls_and_interp(my_perl);
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GS
196 Zero(my_perl, 1, PerlInterpreter);
197 PL_Mem = ipM;
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198 PL_MemShared = ipMS;
199 PL_MemParse = ipMP;
32e30700
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200 PL_Env = ipE;
201 PL_StdIO = ipStd;
202 PL_LIO = ipLIO;
203 PL_Dir = ipD;
204 PL_Sock = ipS;
205 PL_Proc = ipP;
7cb608b5 206 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 207
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208 return my_perl;
209}
210#else
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211
212/*
ccfc67b7
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213=head1 Embedding Functions
214
954c1994
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215=for apidoc perl_alloc
216
217Allocates a new Perl interpreter. See L<perlembed>.
218
219=cut
220*/
221
93a17b20 222PerlInterpreter *
cea2e8a9 223perl_alloc(void)
79072805 224{
cea2e8a9 225 PerlInterpreter *my_perl;
79072805 226
9f653bb5 227 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 228 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 229
e6827a76 230 S_init_tls_and_interp(my_perl);
7cb608b5 231#ifndef PERL_TRACK_MEMPOOL
07409e01 232 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
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233#else
234 Zero(my_perl, 1, PerlInterpreter);
235 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
236 return my_perl;
237#endif
79072805 238}
32e30700 239#endif /* PERL_IMPLICIT_SYS */
79072805 240
954c1994
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241/*
242=for apidoc perl_construct
243
244Initializes a new Perl interpreter. See L<perlembed>.
245
246=cut
247*/
248
79072805 249void
0cb96387 250perl_construct(pTHXx)
79072805 251{
27da23d5 252 dVAR;
ed6c66dd 253 PERL_UNUSED_ARG(my_perl);
8990e307 254#ifdef MULTIPLICITY
54aff467 255 init_interp();
ac27b0f5 256 PL_perl_destruct_level = 1;
54aff467
GS
257#else
258 if (PL_perl_destruct_level > 0)
259 init_interp();
260#endif
33f46ff6 261 /* Init the real globals (and main thread)? */
3280af22 262 if (!PL_linestr) {
2aea9f8a
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263 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
264
561b68a9 265 PL_linestr = newSV(79);
3280af22 266 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 267
3280af22 268 if (!SvREADONLY(&PL_sv_undef)) {
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269 /* set read-only and try to insure than we wont see REFCNT==0
270 very often */
271
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272 SvREADONLY_on(&PL_sv_undef);
273 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 274
3280af22 275 sv_setpv(&PL_sv_no,PL_No);
0309f36e
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276 /* value lookup in void context - happens to have the side effect
277 of caching the numeric forms. */
278 SvIV(&PL_sv_no);
3280af22
NIS
279 SvNV(&PL_sv_no);
280 SvREADONLY_on(&PL_sv_no);
281 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 282
3280af22 283 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 284 SvIV(&PL_sv_yes);
3280af22
NIS
285 SvNV(&PL_sv_yes);
286 SvREADONLY_on(&PL_sv_yes);
287 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
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288
289 SvREADONLY_on(&PL_sv_placeholder);
290 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 291 }
79072805 292
8aad04aa 293 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 294#ifdef PERL_USES_PL_PIDSTATUS
3280af22 295 PL_pidstatus = newHV();
ca0c25f6 296#endif
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297 }
298
396482e1 299 PL_rs = newSVpvs("\n");
dc92893f 300
cea2e8a9 301 init_stacks();
79072805 302
748a9306 303 init_ids();
3280af22 304 PL_lex_state = LEX_NOTPARSING;
a5f75d66 305
312caa8e 306 JMPENV_BOOTSTRAP;
f86702cc
PP
307 STATUS_ALL_SUCCESS;
308
0672f40e 309 init_i18nl10n(1);
36477c24 310 SET_NUMERIC_STANDARD();
0b5b802d 311
ab821d7f 312#if defined(LOCAL_PATCH_COUNT)
3280af22 313 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
314#endif
315
52853b95
GS
316#ifdef HAVE_INTERP_INTERN
317 sys_intern_init();
318#endif
319
3a1ee7e8 320 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 321
3280af22
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322 PL_fdpid = newAV(); /* for remembering popen pids by fd */
323 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 324 PL_errors = newSVpvs("");
48c6b404 325 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
326 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
327 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 328#ifdef USE_ITHREADS
29a861e7
NC
329 /* First entry is an array of empty elements */
330 Perl_av_create_and_push(aTHX_ &PL_regex_padav,(SV*)newAV());
13137afc 331 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 332#endif
e5dd39fc 333#ifdef USE_REENTRANT_API
59bd0823 334 Perl_reentrant_init(aTHX);
e5dd39fc 335#endif
3d47000e
AB
336
337 /* Note that strtab is a rather special HV. Assumptions are made
338 about not iterating on it, and not adding tie magic to it.
339 It is properly deallocated in perl_destruct() */
340 PL_strtab = newHV();
341
3d47000e
AB
342 HvSHAREKEYS_off(PL_strtab); /* mandatory */
343 hv_ksplit(PL_strtab, 512);
344
0631ea03
AB
345#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
346 _dyld_lookup_and_bind
347 ("__environ", (unsigned long *) &environ_pointer, NULL);
348#endif /* environ */
349
2f42fcb0
JH
350#ifndef PERL_MICRO
351# ifdef USE_ENVIRON_ARRAY
0631ea03 352 PL_origenviron = environ;
2f42fcb0 353# endif
0631ea03
AB
354#endif
355
5311654c 356 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 357 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
358 * BeOS has those, but returns the wrong value.
359 * The HZ if not originally defined has been by now
360 * been defined as CLK_TCK, if available. */
dbc1d986 361#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
362 PL_clocktick = sysconf(_SC_CLK_TCK);
363 if (PL_clocktick <= 0)
364#endif
365 PL_clocktick = HZ;
366
081fc587
AB
367 PL_stashcache = newHV();
368
e6830b13
NC
369 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
370 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 371
27da23d5
JH
372#ifdef HAS_MMAP
373 if (!PL_mmap_page_size) {
374#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
375 {
376 SETERRNO(0, SS_NORMAL);
377# ifdef _SC_PAGESIZE
378 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
379# else
380 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
381# endif
382 if ((long) PL_mmap_page_size < 0) {
383 if (errno) {
44f8325f 384 SV * const error = ERRSV;
d4c19fe8 385 SvUPGRADE(error, SVt_PV);
0510663f 386 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
387 }
388 else
389 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
390 }
391 }
392#else
393# ifdef HAS_GETPAGESIZE
394 PL_mmap_page_size = getpagesize();
395# else
396# if defined(I_SYS_PARAM) && defined(PAGESIZE)
397 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
398# endif
399# endif
400#endif
401 if (PL_mmap_page_size <= 0)
402 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
403 (IV) PL_mmap_page_size);
404 }
405#endif /* HAS_MMAP */
406
407#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
408 PL_timesbase.tms_utime = 0;
409 PL_timesbase.tms_stime = 0;
410 PL_timesbase.tms_cutime = 0;
411 PL_timesbase.tms_cstime = 0;
412#endif
413
5336380d
NC
414#ifdef PERL_MAD
415 PL_curforce = -1;
416#endif
417
8990e307 418 ENTER;
79072805
LW
419}
420
954c1994 421/*
62375a60
NIS
422=for apidoc nothreadhook
423
424Stub that provides thread hook for perl_destruct when there are
425no threads.
426
427=cut
428*/
429
430int
4e9e3734 431Perl_nothreadhook(pTHX)
62375a60 432{
96a5add6 433 PERL_UNUSED_CONTEXT;
62375a60
NIS
434 return 0;
435}
436
41e4abd8
NC
437#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
438void
439Perl_dump_sv_child(pTHX_ SV *sv)
440{
441 ssize_t got;
bf357333
NC
442 const int sock = PL_dumper_fd;
443 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
444 union control_un control;
445 struct msghdr msg;
808ad2d0 446 struct iovec vec[2];
bf357333 447 struct cmsghdr *cmptr;
808ad2d0
NC
448 int returned_errno;
449 unsigned char buffer[256];
41e4abd8 450
bf357333 451 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
452 return;
453
454 PerlIO_flush(Perl_debug_log);
455
bf357333
NC
456 /* All these shenanigans are to pass a file descriptor over to our child for
457 it to dump out to. We can't let it hold open the file descriptor when it
458 forks, as the file descriptor it will dump to can turn out to be one end
459 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 460 be open, the wait would be forever.) */
bf357333
NC
461
462 msg.msg_control = control.control;
463 msg.msg_controllen = sizeof(control.control);
464 /* We're a connected socket so we don't need a destination */
465 msg.msg_name = NULL;
466 msg.msg_namelen = 0;
467 msg.msg_iov = vec;
808ad2d0 468 msg.msg_iovlen = 1;
bf357333
NC
469
470 cmptr = CMSG_FIRSTHDR(&msg);
471 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
472 cmptr->cmsg_level = SOL_SOCKET;
473 cmptr->cmsg_type = SCM_RIGHTS;
474 *((int *)CMSG_DATA(cmptr)) = 1;
475
476 vec[0].iov_base = (void*)&sv;
477 vec[0].iov_len = sizeof(sv);
478 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
479
480 if(got < 0) {
bf357333 481 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
482 abort();
483 }
bf357333
NC
484 if(got < sizeof(sv)) {
485 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
486 abort();
487 }
488
808ad2d0
NC
489 /* Return protocol is
490 int: errno value
491 unsigned char: length of location string (0 for empty)
492 unsigned char*: string (not terminated)
493 */
494 vec[0].iov_base = (void*)&returned_errno;
495 vec[0].iov_len = sizeof(returned_errno);
496 vec[1].iov_base = buffer;
497 vec[1].iov_len = 1;
498
499 got = readv(sock, vec, 2);
41e4abd8
NC
500
501 if(got < 0) {
502 perror("Debug leaking scalars parent read failed");
808ad2d0 503 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
504 abort();
505 }
808ad2d0 506 if(got < sizeof(returned_errno) + 1) {
41e4abd8 507 perror("Debug leaking scalars parent short read");
808ad2d0 508 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
509 abort();
510 }
511
808ad2d0
NC
512 if (*buffer) {
513 got = read(sock, buffer + 1, *buffer);
514 if(got < 0) {
515 perror("Debug leaking scalars parent read 2 failed");
516 PerlIO_flush(PerlIO_stderr());
517 abort();
518 }
519
520 if(got < *buffer) {
521 perror("Debug leaking scalars parent short read 2");
522 PerlIO_flush(PerlIO_stderr());
523 abort();
524 }
525 }
526
527 if (returned_errno || *buffer) {
528 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
529 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
530 returned_errno, strerror(returned_errno));
41e4abd8
NC
531 }
532}
533#endif
534
62375a60 535/*
954c1994
GS
536=for apidoc perl_destruct
537
538Shuts down a Perl interpreter. See L<perlembed>.
539
540=cut
541*/
542
31d77e54 543int
0cb96387 544perl_destruct(pTHXx)
79072805 545{
27da23d5 546 dVAR;
8ea43dc8 547 VOL int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 548 HV *hv;
2aa47728 549#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
550 pid_t child;
551#endif
8990e307 552
ed6c66dd 553 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 554
7766f137
GS
555 /* wait for all pseudo-forked children to finish */
556 PERL_WAIT_FOR_CHILDREN;
557
3280af22 558 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
559#ifdef DEBUGGING
560 {
9d4ba2ae
AL
561 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
562 if (s) {
e1ec3a88 563 const int i = atoi(s);
5f05dabc
PP
564 if (destruct_level < i)
565 destruct_level = i;
566 }
4633a7c4
LW
567 }
568#endif
569
27da23d5 570 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
571 dJMPENV;
572 int x = 0;
573
574 JMPENV_PUSH(x);
1b6737cc 575 PERL_UNUSED_VAR(x);
f3faeb53
AB
576 if (PL_endav && !PL_minus_c)
577 call_list(PL_scopestack_ix, PL_endav);
578 JMPENV_POP;
26f423df 579 }
f3faeb53 580 LEAVE;
a0d0e21e
LW
581 FREETMPS;
582
e00b64d4 583 /* Need to flush since END blocks can produce output */
f13a2bc0 584 my_fflush_all();
e00b64d4 585
62375a60
NIS
586 if (CALL_FPTR(PL_threadhook)(aTHX)) {
587 /* Threads hook has vetoed further cleanup */
c301d606 588 PL_veto_cleanup = TRUE;
37038d91 589 return STATUS_EXIT;
62375a60
NIS
590 }
591
2aa47728
NC
592#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
593 if (destruct_level != 0) {
594 /* Fork here to create a child. Our child's job is to preserve the
595 state of scalars prior to destruction, so that we can instruct it
596 to dump any scalars that we later find have leaked.
597 There's no subtlety in this code - it assumes POSIX, and it doesn't
598 fail gracefully */
599 int fd[2];
600
601 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
602 perror("Debug leaking scalars socketpair failed");
603 abort();
604 }
605
606 child = fork();
607 if(child == -1) {
608 perror("Debug leaking scalars fork failed");
609 abort();
610 }
611 if (!child) {
612 /* We are the child */
3125a5a4
NC
613 const int sock = fd[1];
614 const int debug_fd = PerlIO_fileno(Perl_debug_log);
615 int f;
808ad2d0
NC
616 const char *where;
617 /* Our success message is an integer 0, and a char 0 */
618 static const char success[sizeof(int) + 1];
3125a5a4 619
2aa47728 620 close(fd[0]);
2aa47728 621
3125a5a4
NC
622 /* We need to close all other file descriptors otherwise we end up
623 with interesting hangs, where the parent closes its end of a
624 pipe, and sits waiting for (another) child to terminate. Only
625 that child never terminates, because it never gets EOF, because
bf357333
NC
626 we also have the far end of the pipe open. We even need to
627 close the debugging fd, because sometimes it happens to be one
628 end of a pipe, and a process is waiting on the other end for
629 EOF. Normally it would be closed at some point earlier in
630 destruction, but if we happen to cause the pipe to remain open,
631 EOF never occurs, and we get an infinite hang. Hence all the
632 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
633
634 f = sysconf(_SC_OPEN_MAX);
635 if(f < 0) {
808ad2d0
NC
636 where = "sysconf failed";
637 goto abort;
3125a5a4
NC
638 }
639 while (f--) {
640 if (f == sock)
641 continue;
3125a5a4
NC
642 close(f);
643 }
644
2aa47728
NC
645 while (1) {
646 SV *target;
bf357333
NC
647 union control_un control;
648 struct msghdr msg;
649 struct iovec vec[1];
650 struct cmsghdr *cmptr;
651 ssize_t got;
652 int got_fd;
653
654 msg.msg_control = control.control;
655 msg.msg_controllen = sizeof(control.control);
656 /* We're a connected socket so we don't need a source */
657 msg.msg_name = NULL;
658 msg.msg_namelen = 0;
659 msg.msg_iov = vec;
660 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
661
662 vec[0].iov_base = (void*)&target;
663 vec[0].iov_len = sizeof(target);
664
665 got = recvmsg(sock, &msg, 0);
2aa47728
NC
666
667 if(got == 0)
668 break;
669 if(got < 0) {
808ad2d0
NC
670 where = "recv failed";
671 goto abort;
2aa47728
NC
672 }
673 if(got < sizeof(target)) {
808ad2d0
NC
674 where = "short recv";
675 goto abort;
2aa47728 676 }
bf357333 677
808ad2d0
NC
678 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
679 where = "no cmsg";
680 goto abort;
681 }
682 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
683 where = "wrong cmsg_len";
684 goto abort;
685 }
686 if(cmptr->cmsg_level != SOL_SOCKET) {
687 where = "wrong cmsg_level";
688 goto abort;
689 }
690 if(cmptr->cmsg_type != SCM_RIGHTS) {
691 where = "wrong cmsg_type";
692 goto abort;
693 }
bf357333
NC
694
695 got_fd = *(int*)CMSG_DATA(cmptr);
696 /* For our last little bit of trickery, put the file descriptor
697 back into Perl_debug_log, as if we never actually closed it
698 */
808ad2d0
NC
699 if(got_fd != debug_fd) {
700 if (dup2(got_fd, debug_fd) == -1) {
701 where = "dup2";
702 goto abort;
703 }
704 }
2aa47728 705 sv_dump(target);
bf357333 706
2aa47728
NC
707 PerlIO_flush(Perl_debug_log);
708
808ad2d0 709 got = write(sock, &success, sizeof(success));
2aa47728
NC
710
711 if(got < 0) {
808ad2d0
NC
712 where = "write failed";
713 goto abort;
2aa47728 714 }
808ad2d0
NC
715 if(got < sizeof(success)) {
716 where = "short write";
717 goto abort;
2aa47728
NC
718 }
719 }
720 _exit(0);
808ad2d0
NC
721 abort:
722 {
723 int send_errno = errno;
724 unsigned char length = (unsigned char) strlen(where);
725 struct iovec failure[3] = {
726 {(void*)&send_errno, sizeof(send_errno)},
727 {&length, 1},
728 {(void*)where, length}
729 };
730 int got = writev(sock, failure, 3);
731 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
732 in the parent if we try to read from the socketpair after the
733 child has exited, even if there was data to read.
734 So sleep a bit to give the parent a fighting chance of
735 reading the data. */
736 sleep(2);
737 _exit((got == -1) ? errno : 0);
738 }
bf357333 739 /* End of child. */
2aa47728 740 }
41e4abd8 741 PL_dumper_fd = fd[0];
2aa47728
NC
742 close(fd[1]);
743 }
744#endif
745
ff0cee69
PP
746 /* We must account for everything. */
747
748 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
749 /* Do this now, because destroying ops can cause new SVs to be generated
750 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
751 PL_curcop to point to a valid op from which the filename structure
752 member is copied. */
753 PL_curcop = &PL_compiling;
3280af22 754 if (PL_main_root) {
4e380990
DM
755 /* ensure comppad/curpad to refer to main's pad */
756 if (CvPADLIST(PL_main_cv)) {
757 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
758 }
3280af22 759 op_free(PL_main_root);
5f66b61c 760 PL_main_root = NULL;
a0d0e21e 761 }
5f66b61c 762 PL_main_start = NULL;
3280af22 763 SvREFCNT_dec(PL_main_cv);
601f1833 764 PL_main_cv = NULL;
24d3c518 765 PL_dirty = TRUE;
ff0cee69 766
13621cfb
NIS
767 /* Tell PerlIO we are about to tear things apart in case
768 we have layers which are using resources that should
769 be cleaned up now.
770 */
771
772 PerlIO_destruct(aTHX);
773
3280af22 774 if (PL_sv_objcount) {
a0d0e21e
LW
775 /*
776 * Try to destruct global references. We do this first so that the
777 * destructors and destructees still exist. Some sv's might remain.
778 * Non-referenced objects are on their own.
779 */
a0d0e21e 780 sv_clean_objs();
bf9cdc68 781 PL_sv_objcount = 0;
a0de6cf5 782 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 783 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
784 }
785
5cd24f17 786 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 787 SvREFCNT_dec(PL_warnhook);
a0714e2c 788 PL_warnhook = NULL;
3280af22 789 SvREFCNT_dec(PL_diehook);
a0714e2c 790 PL_diehook = NULL;
5cd24f17 791
4b556e6c 792 /* call exit list functions */
3280af22 793 while (PL_exitlistlen-- > 0)
acfe0abc 794 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 795
3280af22 796 Safefree(PL_exitlist);
4b556e6c 797
1c4916e5
CB
798 PL_exitlist = NULL;
799 PL_exitlistlen = 0;
800
551a8b83 801 /* jettison our possibly duplicated environment */
4b647fb0
DM
802 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
803 * so we certainly shouldn't free it here
804 */
2f42fcb0 805#ifndef PERL_MICRO
4b647fb0 806#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 807 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
808#ifdef USE_ITHREADS
809 /* only main thread can free environ[0] contents */
810 && PL_curinterp == aTHX
811#endif
812 )
813 {
551a8b83
JH
814 I32 i;
815
816 for (i = 0; environ[i]; i++)
4b420006 817 safesysfree(environ[i]);
0631ea03 818
4b420006
JH
819 /* Must use safesysfree() when working with environ. */
820 safesysfree(environ);
551a8b83
JH
821
822 environ = PL_origenviron;
823 }
824#endif
2f42fcb0 825#endif /* !PERL_MICRO */
551a8b83 826
30985c42
JH
827 if (destruct_level == 0) {
828
829 DEBUG_P(debprofdump());
830
831#if defined(PERLIO_LAYERS)
832 /* No more IO - including error messages ! */
833 PerlIO_cleanup(aTHX);
834#endif
835
836 CopFILE_free(&PL_compiling);
837 CopSTASH_free(&PL_compiling);
838
839 /* The exit() function will do everything that needs doing. */
840 return STATUS_EXIT;
841 }
842
804ffa60 843 /* reset so print() ends up where we expect */
a0714e2c 844 setdefout(NULL);
804ffa60 845
5f8cb046
DM
846#ifdef USE_ITHREADS
847 /* the syntax tree is shared between clones
848 * so op_free(PL_main_root) only ReREFCNT_dec's
849 * REGEXPs in the parent interpreter
850 * we need to manually ReREFCNT_dec for the clones
851 */
852 {
853 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 854 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
855
856 while (i) {
c4420975 857 SV * const resv = ary[--i];
35061a7e
DM
858
859 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 860 /* this is PL_reg_curpm, already freed
35061a7e
DM
861 * flag is set in regexec.c:S_regtry
862 */
863 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 864 }
1cc8b4c5
AB
865 else if(SvREPADTMP(resv)) {
866 SvREPADTMP_off(resv);
867 }
a560f29b
NC
868 else if(SvIOKp(resv)) {
869 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
870 ReREFCNT_dec(re);
871 }
872 }
873 }
874 SvREFCNT_dec(PL_regex_padav);
7d49f689 875 PL_regex_padav = NULL;
5f8cb046
DM
876 PL_regex_pad = NULL;
877#endif
878
081fc587
AB
879 SvREFCNT_dec((SV*) PL_stashcache);
880 PL_stashcache = NULL;
881
5f05dabc
PP
882 /* loosen bonds of global variables */
883
3280af22
NIS
884 if(PL_rsfp) {
885 (void)PerlIO_close(PL_rsfp);
4608196e 886 PL_rsfp = NULL;
8ebc5c01
PP
887 }
888
889 /* Filters for program text */
3280af22 890 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 891 PL_rsfp_filters = NULL;
8ebc5c01 892
84386e14
RGS
893 if (PL_minus_F) {
894 Safefree(PL_splitstr);
895 PL_splitstr = NULL;
896 }
897
8ebc5c01 898 /* switches */
3280af22
NIS
899 PL_preprocess = FALSE;
900 PL_minus_n = FALSE;
901 PL_minus_p = FALSE;
902 PL_minus_l = FALSE;
903 PL_minus_a = FALSE;
904 PL_minus_F = FALSE;
905 PL_doswitches = FALSE;
599cee73 906 PL_dowarn = G_WARN_OFF;
3280af22
NIS
907 PL_doextract = FALSE;
908 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
909 PL_unsafe = FALSE;
910
911 Safefree(PL_inplace);
bd61b366 912 PL_inplace = NULL;
a7cb1f99 913 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
914
915 if (PL_e_script) {
916 SvREFCNT_dec(PL_e_script);
a0714e2c 917 PL_e_script = NULL;
8ebc5c01
PP
918 }
919
bf9cdc68
RG
920 PL_perldb = 0;
921
8ebc5c01
PP
922 /* magical thingies */
923
7889fe52 924 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 925 PL_ofs_sv = NULL;
5f05dabc 926
7889fe52 927 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 928 PL_ors_sv = NULL;
8ebc5c01 929
3280af22 930 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 931 PL_rs = NULL;
dc92893f 932
d33b2eba 933 Safefree(PL_osname); /* $^O */
bd61b366 934 PL_osname = NULL;
5f05dabc 935
3280af22 936 SvREFCNT_dec(PL_statname);
a0714e2c
SS
937 PL_statname = NULL;
938 PL_statgv = NULL;
5f05dabc 939
8ebc5c01
PP
940 /* defgv, aka *_ should be taken care of elsewhere */
941
8ebc5c01 942 /* clean up after study() */
3280af22 943 SvREFCNT_dec(PL_lastscream);
a0714e2c 944 PL_lastscream = NULL;
3280af22
NIS
945 Safefree(PL_screamfirst);
946 PL_screamfirst = 0;
947 Safefree(PL_screamnext);
948 PL_screamnext = 0;
8ebc5c01 949
7d5ea4e7
GS
950 /* float buffer */
951 Safefree(PL_efloatbuf);
bd61b366 952 PL_efloatbuf = NULL;
7d5ea4e7
GS
953 PL_efloatsize = 0;
954
8ebc5c01 955 /* startup and shutdown function lists */
3280af22 956 SvREFCNT_dec(PL_beginav);
5a837c8f 957 SvREFCNT_dec(PL_beginav_save);
3280af22 958 SvREFCNT_dec(PL_endav);
7d30b5c4 959 SvREFCNT_dec(PL_checkav);
ece599bd 960 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
961 SvREFCNT_dec(PL_unitcheckav);
962 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 963 SvREFCNT_dec(PL_initav);
7d49f689
NC
964 PL_beginav = NULL;
965 PL_beginav_save = NULL;
966 PL_endav = NULL;
967 PL_checkav = NULL;
968 PL_checkav_save = NULL;
3c10abe3
AG
969 PL_unitcheckav = NULL;
970 PL_unitcheckav_save = NULL;
7d49f689 971 PL_initav = NULL;
5618dfe8 972
8ebc5c01 973 /* shortcuts just get cleared */
a0714e2c
SS
974 PL_envgv = NULL;
975 PL_incgv = NULL;
976 PL_hintgv = NULL;
977 PL_errgv = NULL;
978 PL_argvgv = NULL;
979 PL_argvoutgv = NULL;
980 PL_stdingv = NULL;
981 PL_stderrgv = NULL;
982 PL_last_in_gv = NULL;
983 PL_replgv = NULL;
984 PL_DBgv = NULL;
985 PL_DBline = NULL;
986 PL_DBsub = NULL;
987 PL_DBsingle = NULL;
988 PL_DBtrace = NULL;
989 PL_DBsignal = NULL;
990 PL_DBassertion = NULL;
601f1833 991 PL_DBcv = NULL;
7d49f689 992 PL_dbargs = NULL;
5c284bb0 993 PL_debstash = NULL;
8ebc5c01 994
7a1c5554 995 SvREFCNT_dec(PL_argvout_stack);
7d49f689 996 PL_argvout_stack = NULL;
8ebc5c01 997
5c831c24 998 SvREFCNT_dec(PL_modglobal);
5c284bb0 999 PL_modglobal = NULL;
5c831c24 1000 SvREFCNT_dec(PL_preambleav);
7d49f689 1001 PL_preambleav = NULL;
5c831c24 1002 SvREFCNT_dec(PL_subname);
a0714e2c 1003 PL_subname = NULL;
5c831c24 1004 SvREFCNT_dec(PL_linestr);
a0714e2c 1005 PL_linestr = NULL;
ca0c25f6 1006#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1007 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1008 PL_pidstatus = NULL;
ca0c25f6 1009#endif
5c831c24 1010 SvREFCNT_dec(PL_toptarget);
a0714e2c 1011 PL_toptarget = NULL;
5c831c24 1012 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1013 PL_bodytarget = NULL;
1014 PL_formtarget = NULL;
5c831c24 1015
d33b2eba 1016 /* free locale stuff */
b9582b6a 1017#ifdef USE_LOCALE_COLLATE
d33b2eba 1018 Safefree(PL_collation_name);
bd61b366 1019 PL_collation_name = NULL;
b9582b6a 1020#endif
d33b2eba 1021
b9582b6a 1022#ifdef USE_LOCALE_NUMERIC
d33b2eba 1023 Safefree(PL_numeric_name);
bd61b366 1024 PL_numeric_name = NULL;
a453c169 1025 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1026 PL_numeric_radix_sv = NULL;
b9582b6a 1027#endif
d33b2eba 1028
5c831c24
GS
1029 /* clear utf8 character classes */
1030 SvREFCNT_dec(PL_utf8_alnum);
1031 SvREFCNT_dec(PL_utf8_alnumc);
1032 SvREFCNT_dec(PL_utf8_ascii);
1033 SvREFCNT_dec(PL_utf8_alpha);
1034 SvREFCNT_dec(PL_utf8_space);
1035 SvREFCNT_dec(PL_utf8_cntrl);
1036 SvREFCNT_dec(PL_utf8_graph);
1037 SvREFCNT_dec(PL_utf8_digit);
1038 SvREFCNT_dec(PL_utf8_upper);
1039 SvREFCNT_dec(PL_utf8_lower);
1040 SvREFCNT_dec(PL_utf8_print);
1041 SvREFCNT_dec(PL_utf8_punct);
1042 SvREFCNT_dec(PL_utf8_xdigit);
1043 SvREFCNT_dec(PL_utf8_mark);
1044 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1045 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1046 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1047 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1048 SvREFCNT_dec(PL_utf8_idstart);
1049 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1050 PL_utf8_alnum = NULL;
1051 PL_utf8_alnumc = NULL;
1052 PL_utf8_ascii = NULL;
1053 PL_utf8_alpha = NULL;
1054 PL_utf8_space = NULL;
1055 PL_utf8_cntrl = NULL;
1056 PL_utf8_graph = NULL;
1057 PL_utf8_digit = NULL;
1058 PL_utf8_upper = NULL;
1059 PL_utf8_lower = NULL;
1060 PL_utf8_print = NULL;
1061 PL_utf8_punct = NULL;
1062 PL_utf8_xdigit = NULL;
1063 PL_utf8_mark = NULL;
1064 PL_utf8_toupper = NULL;
1065 PL_utf8_totitle = NULL;
1066 PL_utf8_tolower = NULL;
1067 PL_utf8_tofold = NULL;
1068 PL_utf8_idstart = NULL;
1069 PL_utf8_idcont = NULL;
5c831c24 1070
971a9dd3 1071 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1072 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1073 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1074 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1075 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1076 CopFILE_free(&PL_compiling);
1077 CopSTASH_free(&PL_compiling);
5c831c24 1078
a0d0e21e 1079 /* Prepare to destruct main symbol table. */
5f05dabc 1080
3280af22
NIS
1081 hv = PL_defstash;
1082 PL_defstash = 0;
a0d0e21e 1083 SvREFCNT_dec(hv);
5c831c24 1084 SvREFCNT_dec(PL_curstname);
a0714e2c 1085 PL_curstname = NULL;
a0d0e21e 1086
5a844595
GS
1087 /* clear queued errors */
1088 SvREFCNT_dec(PL_errors);
a0714e2c 1089 PL_errors = NULL;
5a844595 1090
a0d0e21e 1091 FREETMPS;
0453d815 1092 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1093 if (PL_scopestack_ix != 0)
9014280d 1094 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1095 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1096 (long)PL_scopestack_ix);
1097 if (PL_savestack_ix != 0)
9014280d 1098 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1099 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1100 (long)PL_savestack_ix);
1101 if (PL_tmps_floor != -1)
9014280d 1102 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1103 (long)PL_tmps_floor + 1);
a0d0e21e 1104 if (cxstack_ix != -1)
9014280d 1105 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1106 (long)cxstack_ix + 1);
a0d0e21e 1107 }
8990e307
LW
1108
1109 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1110 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1111 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1112
1113 /* the 2 is for PL_fdpid and PL_strtab */
1114 while (PL_sv_count > 2 && sv_clean_all())
1115 ;
1116
d33b2eba
GS
1117 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1118 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1119 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1120 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1121
d4777f27
GS
1122 AvREAL_off(PL_fdpid); /* no surviving entries */
1123 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1124 PL_fdpid = NULL;
d33b2eba 1125
6c644e78
GS
1126#ifdef HAVE_INTERP_INTERN
1127 sys_intern_clear();
1128#endif
1129
6e72f9df
PP
1130 /* Destruct the global string table. */
1131 {
1132 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1133 * so that sv_free() won't fail on them.
80459961
NC
1134 * Now that the global string table is using a single hunk of memory
1135 * for both HE and HEK, we either need to explicitly unshare it the
1136 * correct way, or actually free things here.
6e72f9df 1137 */
80459961
NC
1138 I32 riter = 0;
1139 const I32 max = HvMAX(PL_strtab);
c4420975 1140 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1141 HE *hent = array[0];
1142
6e72f9df 1143 for (;;) {
0453d815 1144 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1145 HE * const next = HeNEXT(hent);
9014280d 1146 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1147 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1148 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1149 Safefree(hent);
1150 hent = next;
6e72f9df
PP
1151 }
1152 if (!hent) {
1153 if (++riter > max)
1154 break;
1155 hent = array[riter];
1156 }
1157 }
80459961
NC
1158
1159 Safefree(array);
1160 HvARRAY(PL_strtab) = 0;
1161 HvTOTALKEYS(PL_strtab) = 0;
1162 HvFILL(PL_strtab) = 0;
6e72f9df 1163 }
3280af22 1164 SvREFCNT_dec(PL_strtab);
6e72f9df 1165
e652bb2f 1166#ifdef USE_ITHREADS
c21d1a0f 1167 /* free the pointer tables used for cloning */
a0739874 1168 ptr_table_free(PL_ptr_table);
bf9cdc68 1169 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1170#endif
a0739874 1171
d33b2eba
GS
1172 /* free special SVs */
1173
1174 SvREFCNT(&PL_sv_yes) = 0;
1175 sv_clear(&PL_sv_yes);
1176 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1177 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1178
1179 SvREFCNT(&PL_sv_no) = 0;
1180 sv_clear(&PL_sv_no);
1181 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1182 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1183
9f375a43
DM
1184 {
1185 int i;
1186 for (i=0; i<=2; i++) {
1187 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1188 sv_clear(PERL_DEBUG_PAD(i));
1189 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1190 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1191 }
1192 }
1193
0453d815 1194 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1195 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1196
eba0f806
DM
1197#ifdef DEBUG_LEAKING_SCALARS
1198 if (PL_sv_count != 0) {
1199 SV* sva;
1200 SV* sv;
1201 register SV* svend;
1202
1203 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1204 svend = &sva[SvREFCNT(sva)];
1205 for (sv = sva + 1; sv < svend; ++sv) {
1206 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1207 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1208 " flags=0x%"UVxf
fd0854ff
DM
1209 " refcnt=%"UVuf pTHX__FORMAT "\n"
1210 "\tallocated at %s:%d %s %s%s\n",
6c9570dc 1211 (void*)sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
fd0854ff
DM
1212 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1213 sv->sv_debug_line,
1214 sv->sv_debug_inpad ? "for" : "by",
1215 sv->sv_debug_optype ?
1216 PL_op_name[sv->sv_debug_optype]: "(none)",
1217 sv->sv_debug_cloned ? " (cloned)" : ""
1218 );
2aa47728 1219#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1220 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1221#endif
eba0f806
DM
1222 }
1223 }
1224 }
1225 }
2aa47728
NC
1226#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1227 {
1228 int status;
1229 fd_set rset;
1230 /* Wait for up to 4 seconds for child to terminate.
1231 This seems to be the least effort way of timing out on reaping
1232 its exit status. */
1233 struct timeval waitfor = {4, 0};
41e4abd8 1234 int sock = PL_dumper_fd;
2aa47728
NC
1235
1236 shutdown(sock, 1);
1237 FD_ZERO(&rset);
1238 FD_SET(sock, &rset);
1239 select(sock + 1, &rset, NULL, NULL, &waitfor);
1240 waitpid(child, &status, WNOHANG);
1241 close(sock);
1242 }
1243#endif
eba0f806 1244#endif
bf9cdc68 1245 PL_sv_count = 0;
eba0f806
DM
1246
1247
56a2bab7 1248#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1249 /* No more IO - including error messages ! */
1250 PerlIO_cleanup(aTHX);
1251#endif
1252
9f4bd222 1253 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1254 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1255 for no arg - and will try and SvREFCNT_dec it.
1256 */
1257 SvREFCNT(&PL_sv_undef) = 0;
1258 SvREADONLY_off(&PL_sv_undef);
1259
3280af22 1260 Safefree(PL_origfilename);
bd61b366 1261 PL_origfilename = NULL;
3280af22 1262 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1263 PL_reg_start_tmp = (char**)NULL;
1264 PL_reg_start_tmpl = 0;
43c5f42d 1265 Safefree(PL_reg_curpm);
82ba1be6 1266 Safefree(PL_reg_poscache);
dd28f7bb 1267 free_tied_hv_pool();
3280af22 1268 Safefree(PL_op_mask);
cf36064f 1269 Safefree(PL_psig_ptr);
bf9cdc68 1270 PL_psig_ptr = (SV**)NULL;
cf36064f 1271 Safefree(PL_psig_name);
bf9cdc68 1272 PL_psig_name = (SV**)NULL;
2c2666fc 1273 Safefree(PL_bitcount);
bd61b366 1274 PL_bitcount = NULL;
ce08f86c 1275 Safefree(PL_psig_pend);
bf9cdc68 1276 PL_psig_pend = (int*)NULL;
a0714e2c 1277 PL_formfeed = NULL;
6e72f9df 1278 nuke_stacks();
bf9cdc68
RG
1279 PL_tainting = FALSE;
1280 PL_taint_warn = FALSE;
3280af22 1281 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1282 PL_debug = 0;
ac27b0f5 1283
a0d0e21e 1284 DEBUG_P(debprofdump());
d33b2eba 1285
e5dd39fc 1286#ifdef USE_REENTRANT_API
10bc17b6 1287 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1288#endif
1289
612f20c3
GS
1290 sv_free_arenas();
1291
5d9a96ca
DM
1292 while (PL_regmatch_slab) {
1293 regmatch_slab *s = PL_regmatch_slab;
1294 PL_regmatch_slab = PL_regmatch_slab->next;
1295 Safefree(s);
1296 }
1297
fc36a67e
PP
1298 /* As the absolutely last thing, free the non-arena SV for mess() */
1299
3280af22 1300 if (PL_mess_sv) {
f350b448
NC
1301 /* we know that type == SVt_PVMG */
1302
9c63abab 1303 /* it could have accumulated taint magic */
f350b448
NC
1304 MAGIC* mg;
1305 MAGIC* moremagic;
1306 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1307 moremagic = mg->mg_moremagic;
1308 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1309 && mg->mg_len >= 0)
1310 Safefree(mg->mg_ptr);
1311 Safefree(mg);
9c63abab 1312 }
f350b448 1313
fc36a67e 1314 /* we know that type >= SVt_PV */
8bd4d4c5 1315 SvPV_free(PL_mess_sv);
3280af22
NIS
1316 Safefree(SvANY(PL_mess_sv));
1317 Safefree(PL_mess_sv);
a0714e2c 1318 PL_mess_sv = NULL;
fc36a67e 1319 }
37038d91 1320 return STATUS_EXIT;
79072805
LW
1321}
1322
954c1994
GS
1323/*
1324=for apidoc perl_free
1325
1326Releases a Perl interpreter. See L<perlembed>.
1327
1328=cut
1329*/
1330
79072805 1331void
0cb96387 1332perl_free(pTHXx)
79072805 1333{
5174512c
NC
1334 dVAR;
1335
c301d606
DM
1336 if (PL_veto_cleanup)
1337 return;
1338
7cb608b5 1339#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1340 {
1341 /*
1342 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1343 * value as we're probably hunting memory leaks then
1344 */
1345 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1346 if (!s || atoi(s) == 0) {
1347 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1348 thread at thread exit. */
1349 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1350 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1351 }
1352 }
7cb608b5
NC
1353#endif
1354
acfe0abc 1355#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1356# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1357 {
acfe0abc 1358# ifdef NETWARE
7af12a34 1359 void *host = nw_internal_host;
acfe0abc 1360# else
7af12a34 1361 void *host = w32_internal_host;
acfe0abc 1362# endif
7af12a34 1363 PerlMem_free(aTHXx);
acfe0abc 1364# ifdef NETWARE
7af12a34 1365 nw_delete_internal_host(host);
acfe0abc 1366# else
7af12a34 1367 win32_delete_internal_host(host);
acfe0abc 1368# endif
7af12a34 1369 }
1c0ca838
GS
1370# else
1371 PerlMem_free(aTHXx);
1372# endif
acfe0abc
GS
1373#else
1374 PerlMem_free(aTHXx);
76e3520e 1375#endif
79072805
LW
1376}
1377
b7f7fff6 1378#if defined(USE_ITHREADS)
aebd1ac7
GA
1379/* provide destructors to clean up the thread key when libperl is unloaded */
1380#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1381
826955bd 1382#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1383#pragma fini "perl_fini"
666ad1ec
GA
1384#elif defined(__sun) && !defined(__GNUC__)
1385#pragma fini (perl_fini)
aebd1ac7
GA
1386#endif
1387
0dbb1585
AL
1388static void
1389#if defined(__GNUC__)
1390__attribute__((destructor))
aebd1ac7 1391#endif
de009b76 1392perl_fini(void)
aebd1ac7 1393{
27da23d5 1394 dVAR;
c301d606 1395 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1396 FREE_THREAD_KEY;
1397}
1398
1399#endif /* WIN32 */
1400#endif /* THREADS */
1401
4b556e6c 1402void
864dbfa3 1403Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1404{
97aff369 1405 dVAR;
3280af22
NIS
1406 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1407 PL_exitlist[PL_exitlistlen].fn = fn;
1408 PL_exitlist[PL_exitlistlen].ptr = ptr;
1409 ++PL_exitlistlen;
4b556e6c
JD
1410}
1411
56cf6df8
RGS
1412#ifdef HAS_PROCSELFEXE
1413/* This is a function so that we don't hold on to MAXPATHLEN
1414 bytes of stack longer than necessary
1415 */
1416STATIC void
e1ec3a88 1417S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1418{
1419 char buf[MAXPATHLEN];
1420 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1421
1422 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1423 includes a spurious NUL which will cause $^X to fail in system
1424 or backticks (this will prevent extensions from being built and
1425 many tests from working). readlink is not meant to add a NUL.
1426 Normal readlink works fine.
1427 */
1428 if (len > 0 && buf[len-1] == '\0') {
1429 len--;
1430 }
1431
1432 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1433 returning the text "unknown" from the readlink rather than the path
1434 to the executable (or returning an error from the readlink). Any valid
1435 path has a '/' in it somewhere, so use that to validate the result.
1436 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1437 */
1438 if (len > 0 && memchr(buf, '/', len)) {
1439 sv_setpvn(sv,buf,len);
1440 }
1441 else {
1442 sv_setpv(sv,arg0);
1443 }
1444}
1445#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1446
1447STATIC void
1448S_set_caret_X(pTHX) {
97aff369 1449 dVAR;
fafc274c 1450 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1451 if (tmpgv) {
1452#ifdef HAS_PROCSELFEXE
1453 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1454#else
1455#ifdef OS2
c69033f2 1456 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1457#else
c69033f2 1458 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1459#endif
1460#endif
1461 }
1462}
1463
954c1994
GS
1464/*
1465=for apidoc perl_parse
1466
1467Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1468
1469=cut
1470*/
1471
79072805 1472int
0cb96387 1473perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1474{
27da23d5 1475 dVAR;
6224f72b 1476 I32 oldscope;
6224f72b 1477 int ret;
db36c5a1 1478 dJMPENV;
8d063cd8 1479
ed6c66dd 1480 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 1481
a687059c
LW
1482#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1483#ifdef IAMSUID
1484#undef IAMSUID
cea2e8a9 1485 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1486setuid perl scripts securely.\n");
ae3f3efd 1487#endif /* IAMSUID */
a687059c
LW
1488#endif
1489
b0891165
JH
1490#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1491 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1492 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1493 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1494 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1495 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1496 if (!PL_rehash_seed_set)
1497 PL_rehash_seed = get_hash_seed();
b0891165 1498 {
9d4ba2ae 1499 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1500
1b6737cc
AL
1501 if (s && (atoi(s) == 1))
1502 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1503 }
1504#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1505
3280af22 1506 PL_origargc = argc;
e2975953 1507 PL_origargv = argv;
a0d0e21e 1508
a2722ac9
GA
1509 if (PL_origalen != 0) {
1510 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1511 }
1512 else {
3cb9023d
JH
1513 /* Set PL_origalen be the sum of the contiguous argv[]
1514 * elements plus the size of the env in case that it is
e9137a8e 1515 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1516 * as the maximum modifiable length of $0. In the worst case
1517 * the area we are able to modify is limited to the size of
43c32782 1518 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1519 * --jhi */
e1ec3a88 1520 const char *s = NULL;
54bfe034 1521 int i;
1b6737cc 1522 const UV mask =
7d8e7db3 1523 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1524 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1525 const UV aligned =
43c32782
JH
1526 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1527
1528 /* See if all the arguments are contiguous in memory. Note
1529 * that 'contiguous' is a loose term because some platforms
1530 * align the argv[] and the envp[]. If the arguments look
1531 * like non-aligned, assume that they are 'strictly' or
1532 * 'traditionally' contiguous. If the arguments look like
1533 * aligned, we just check that they are within aligned
1534 * PTRSIZE bytes. As long as no system has something bizarre
1535 * like the argv[] interleaved with some other data, we are
1536 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1537 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1538 while (*s) s++;
1539 for (i = 1; i < PL_origargc; i++) {
1540 if ((PL_origargv[i] == s + 1
43c32782 1541#ifdef OS2
c8941eeb 1542 || PL_origargv[i] == s + 2
43c32782 1543#endif
c8941eeb
JH
1544 )
1545 ||
1546 (aligned &&
1547 (PL_origargv[i] > s &&
1548 PL_origargv[i] <=
1549 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1550 )
1551 {
1552 s = PL_origargv[i];
1553 while (*s) s++;
1554 }
1555 else
1556 break;
54bfe034 1557 }
54bfe034 1558 }
3cb9023d 1559 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1560 if (s && PL_origenviron) {
9d419b5f 1561 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1562 ||
1563 (aligned &&
1564 (PL_origenviron[0] > s &&
1565 PL_origenviron[0] <=
1566 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1567 )
1568 {
9d419b5f 1569#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1570 s = PL_origenviron[0];
1571 while (*s) s++;
1572#endif
bd61b366 1573 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1574 /* Force copy of environment. */
1575 for (i = 1; PL_origenviron[i]; i++) {
1576 if (PL_origenviron[i] == s + 1
1577 ||
1578 (aligned &&
1579 (PL_origenviron[i] > s &&
1580 PL_origenviron[i] <=
1581 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1582 )
1583 {
1584 s = PL_origenviron[i];
1585 while (*s) s++;
1586 }
1587 else
1588 break;
54bfe034 1589 }
43c32782 1590 }
54bfe034 1591 }
2d2af554 1592 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1593 }
1594
3280af22 1595 if (PL_do_undump) {
a0d0e21e
LW
1596
1597 /* Come here if running an undumped a.out. */
1598
3280af22
NIS
1599 PL_origfilename = savepv(argv[0]);
1600 PL_do_undump = FALSE;
a0d0e21e 1601 cxstack_ix = -1; /* start label stack again */
748a9306 1602 init_ids();
b7975bdd
NC
1603 assert (!PL_tainted);
1604 TAINT;
1605 S_set_caret_X(aTHX);
1606 TAINT_NOT;
a0d0e21e
LW
1607 init_postdump_symbols(argc,argv,env);
1608 return 0;
1609 }
1610
3280af22 1611 if (PL_main_root) {
3280af22 1612 op_free(PL_main_root);
5f66b61c 1613 PL_main_root = NULL;
ff0cee69 1614 }
5f66b61c 1615 PL_main_start = NULL;
3280af22 1616 SvREFCNT_dec(PL_main_cv);
601f1833 1617 PL_main_cv = NULL;
79072805 1618
3280af22
NIS
1619 time(&PL_basetime);
1620 oldscope = PL_scopestack_ix;
599cee73 1621 PL_dowarn = G_WARN_OFF;
f86702cc 1622
14dd3ad8 1623 JMPENV_PUSH(ret);
6224f72b 1624 switch (ret) {
312caa8e 1625 case 0:
14dd3ad8 1626 parse_body(env,xsinit);
3c10abe3
AG
1627 if (PL_unitcheckav)
1628 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1629 if (PL_checkav)
1630 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1631 ret = 0;
1632 break;
6224f72b
GS
1633 case 1:
1634 STATUS_ALL_FAILURE;
1635 /* FALL THROUGH */
1636 case 2:
1637 /* my_exit() was called */
3280af22 1638 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1639 LEAVE;
1640 FREETMPS;
3280af22 1641 PL_curstash = PL_defstash;
3c10abe3
AG
1642 if (PL_unitcheckav)
1643 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1644 if (PL_checkav)
1645 call_list(oldscope, PL_checkav);
37038d91 1646 ret = STATUS_EXIT;
14dd3ad8 1647 break;
6224f72b 1648 case 3:
bf49b057 1649 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1650 ret = 1;
1651 break;
6224f72b 1652 }
14dd3ad8
GS
1653 JMPENV_POP;
1654 return ret;
1655}
1656
312caa8e 1657STATIC void *
14dd3ad8 1658S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1659{
27da23d5 1660 dVAR;
312caa8e 1661 int argc = PL_origargc;
8f42b153 1662 char **argv = PL_origargv;
e1ec3a88 1663 const char *scriptname = NULL;
312caa8e 1664 VOL bool dosearch = FALSE;
e1ec3a88 1665 const char *validarg = "";
312caa8e 1666 register SV *sv;
47f56822 1667 register char *s, c;
bd61b366 1668 const char *cddir = NULL;
ab019eaa 1669#ifdef USE_SITECUSTOMIZE
20ef40cf 1670 bool minus_f = FALSE;
ab019eaa 1671#endif
312caa8e 1672
3280af22 1673 sv_setpvn(PL_linestr,"",0);
396482e1 1674 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1675 SAVEFREESV(sv);
1676 init_main_stash();
54310121 1677
6224f72b
GS
1678 for (argc--,argv++; argc > 0; argc--,argv++) {
1679 if (argv[0][0] != '-' || !argv[0][1])
1680 break;
1681#ifdef DOSUID
1682 if (*validarg)
1683 validarg = " PHOOEY ";
1684 else
1685 validarg = argv[0];
ae3f3efd
PS
1686 /*
1687 * Can we rely on the kernel to start scripts with argv[1] set to
1688 * contain all #! line switches (the whole line)? (argv[0] is set to
1689 * the interpreter name, argv[2] to the script name; argv[3] and
1690 * above may contain other arguments.)
1691 */
13281fa4 1692#endif
6224f72b
GS
1693 s = argv[0]+1;
1694 reswitch:
47f56822 1695 switch ((c = *s)) {
729a02f2 1696 case 'C':
1d5472a9
GS
1697#ifndef PERL_STRICT_CR
1698 case '\r':
1699#endif
6224f72b
GS
1700 case ' ':
1701 case '0':
1702 case 'F':
1703 case 'a':
1704 case 'c':
1705 case 'd':
1706 case 'D':
1707 case 'h':
1708 case 'i':
1709 case 'l':
1710 case 'M':
1711 case 'm':
1712 case 'n':
1713 case 'p':
1714 case 's':
1715 case 'u':
1716 case 'U':
1717 case 'v':
599cee73
PM
1718 case 'W':
1719 case 'X':
6224f72b 1720 case 'w':
06492da6 1721 case 'A':
97bd5664 1722 if ((s = moreswitches(s)))
6224f72b
GS
1723 goto reswitch;
1724 break;
33b78306 1725
1dbad523 1726 case 't':
22f7c9c9 1727 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1728 if( !PL_tainting ) {
1729 PL_taint_warn = TRUE;
1730 PL_tainting = TRUE;
1731 }
1732 s++;
1733 goto reswitch;
6224f72b 1734 case 'T':
22f7c9c9 1735 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1736 PL_tainting = TRUE;
317ea90d 1737 PL_taint_warn = FALSE;
6224f72b
GS
1738 s++;
1739 goto reswitch;
f86702cc 1740
bc9b29db
RH
1741 case 'E':
1742 PL_minus_E = TRUE;
1743 /* FALL THROUGH */
6224f72b 1744 case 'e':
bf4acbe4
GS
1745#ifdef MACOS_TRADITIONAL
1746 /* ignore -e for Dev:Pseudo argument */
1747 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1748 break;
bf4acbe4 1749#endif
a52eba0e 1750 forbid_setid('e', -1);
3280af22 1751 if (!PL_e_script) {
396482e1 1752 PL_e_script = newSVpvs("");
0cb96387 1753 filter_add(read_e_script, NULL);
6224f72b
GS
1754 }
1755 if (*++s)
3280af22 1756 sv_catpv(PL_e_script, s);
6224f72b 1757 else if (argv[1]) {
3280af22 1758 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1759 argc--,argv++;
1760 }
1761 else
47f56822 1762 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1763 sv_catpvs(PL_e_script, "\n");
6224f72b 1764 break;
afe37c7d 1765
20ef40cf 1766 case 'f':
f5542d3a 1767#ifdef USE_SITECUSTOMIZE
20ef40cf 1768 minus_f = TRUE;
f5542d3a 1769#endif
20ef40cf
GA
1770 s++;
1771 goto reswitch;
1772
6224f72b 1773 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1774 forbid_setid('I', -1);
bd61b366 1775 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1776 argc--,argv++;
1777 }
6224f72b 1778 if (s && *s) {
0df16ed7 1779 STRLEN len = strlen(s);
aec46f14 1780 const char * const p = savepvn(s, len);
88fe16b2 1781 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1782 sv_catpvs(sv, "-I");
0df16ed7 1783 sv_catpvn(sv, p, len);
396482e1 1784 sv_catpvs(sv, " ");
6224f72b 1785 Safefree(p);
0df16ed7
GS
1786 }
1787 else
a67e862a 1788 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1789 break;
1790 case 'P':
a52eba0e 1791 forbid_setid('P', -1);
3280af22 1792 PL_preprocess = TRUE;
6224f72b
GS
1793 s++;
1794 goto reswitch;
1795 case 'S':
a52eba0e 1796 forbid_setid('S', -1);
6224f72b
GS
1797 dosearch = TRUE;
1798 s++;
1799 goto reswitch;
1800 case 'V':
7edfd0ef
NC
1801 {
1802 SV *opts_prog;
1803
29a861e7 1804 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
7edfd0ef
NC
1805 if (*++s != ':') {
1806 STRLEN opts;
1807
396482e1 1808 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1809#ifdef VMS
396482e1 1810 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1811#else
396482e1 1812 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1813#endif
7edfd0ef 1814 opts = SvCUR(opts_prog);
efcaa95b 1815
9cd7d3f2 1816 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1817# ifdef DEBUGGING
e2e4dbf1 1818 " DEBUGGING"
6224f72b 1819# endif
4f185743
NC
1820# ifdef DEBUG_LEAKING_SCALARS
1821 " DEBUG_LEAKING_SCALARS"
1822# endif
85e1fcb9 1823# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1824 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1825# endif
1826# ifdef FAKE_THREADS
e2e4dbf1 1827 " FAKE_THREADS"
85e1fcb9 1828# endif
6224f72b 1829# ifdef MULTIPLICITY
e2e4dbf1 1830 " MULTIPLICITY"
6224f72b 1831# endif
85e1fcb9 1832# ifdef MYMALLOC
e2e4dbf1 1833 " MYMALLOC"
85e1fcb9 1834# endif
3bcf5ed8
SP
1835# ifdef NO_MATHOMS
1836 " NO_MATHOMS"
1837# endif
85e1fcb9 1838# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1839 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1840# endif
1841# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1842 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1843# endif
1844# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1845 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1846# endif
1847# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1848 " PERL_IMPLICIT_SYS"
85e1fcb9 1849# endif
a724edfe
NC
1850# ifdef PERL_MAD
1851 " PERL_MAD"
1852# endif
85e1fcb9 1853# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1854 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1855# endif
1856# ifdef PERL_NEED_APPCTX
e2e4dbf1 1857 " PERL_NEED_APPCTX"
85e1fcb9
SH
1858# endif
1859# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1860 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1861# endif
1862# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1863 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1864# endif
9c0a4d5d
DM
1865# ifdef PERL_TRACK_MEMPOOL
1866 " PERL_TRACK_MEMPOOL"
1867# endif
417cd4a8
SP
1868# ifdef PERL_USE_SAFE_PUTENV
1869 " PERL_USE_SAFE_PUTENV"
1870# endif
ca0c25f6
NC
1871#ifdef PERL_USES_PL_PIDSTATUS
1872 " PERL_USES_PL_PIDSTATUS"
1873#endif
85e1fcb9 1874# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1875 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1876# endif
1877# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1878 " THREADS_HAVE_PIDS"
85e1fcb9 1879# endif
85e1fcb9 1880# ifdef USE_64_BIT_ALL
e2e4dbf1 1881 " USE_64_BIT_ALL"
ac5e8965 1882# endif
10cc9d2a 1883# ifdef USE_64_BIT_INT
e2e4dbf1 1884 " USE_64_BIT_INT"
10cc9d2a 1885# endif
85e1fcb9 1886# ifdef USE_ITHREADS
e2e4dbf1 1887 " USE_ITHREADS"
85e1fcb9
SH
1888# endif
1889# ifdef USE_LARGE_FILES
e2e4dbf1 1890 " USE_LARGE_FILES"
ac5e8965
JH
1891# endif
1892# ifdef USE_LONG_DOUBLE
e2e4dbf1 1893 " USE_LONG_DOUBLE"
ac5e8965 1894# endif
85e1fcb9 1895# ifdef USE_PERLIO
e2e4dbf1 1896 " USE_PERLIO"
53430762 1897# endif
85e1fcb9 1898# ifdef USE_REENTRANT_API
e2e4dbf1 1899 " USE_REENTRANT_API"
85e1fcb9
SH
1900# endif
1901# ifdef USE_SFIO
e2e4dbf1 1902 " USE_SFIO"
ac5e8965 1903# endif
20ef40cf 1904# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1905 " USE_SITECUSTOMIZE"
20ef40cf 1906# endif
85e1fcb9 1907# ifdef USE_SOCKS
e2e4dbf1 1908 " USE_SOCKS"
b363f7ed 1909# endif
e2e4dbf1 1910 );
efcaa95b 1911
7edfd0ef
NC
1912 while (SvCUR(opts_prog) > opts+76) {
1913 /* find last space after "options: " and before col 76
1914 */
efcaa95b 1915
7edfd0ef 1916 const char *space;
c4420975 1917 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1918 const char c = pv[opts+76];
1919 pv[opts+76] = '\0';
1920 space = strrchr(pv+opts+26, ' ');
1921 pv[opts+76] = c;
1922 if (!space) break; /* "Can't happen" */
efcaa95b 1923
7edfd0ef 1924 /* break the line before that space */
efcaa95b 1925
7edfd0ef 1926 opts = space - pv;
89529cee 1927 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1928 STR_WITH_LEN("\\n "));
7edfd0ef 1929 }
efcaa95b 1930
396482e1 1931 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1932
6224f72b 1933#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1934 if (LOCAL_PATCH_COUNT > 0) {
1935 int i;
396482e1 1936 sv_catpvs(opts_prog,
7edfd0ef
NC
1937 "\" Locally applied patches:\\n\",");
1938 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1939 if (PL_localpatches[i])
1940 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1941 0, PL_localpatches[i], 0);
1942 }
6224f72b 1943 }
6224f72b 1944#endif
7edfd0ef
NC
1945 Perl_sv_catpvf(aTHX_ opts_prog,
1946 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1947#ifdef __DATE__
1948# ifdef __TIME__
7edfd0ef
NC
1949 Perl_sv_catpvf(aTHX_ opts_prog,
1950 ",\" Compiled at %s %s\\n\"",__DATE__,
1951 __TIME__);
6224f72b 1952# else
7edfd0ef
NC
1953 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1954 __DATE__);
6224f72b
GS
1955# endif
1956#endif
396482e1 1957 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1958 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1959 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1960#ifdef __CYGWIN__
396482e1 1961 sv_catpvs(opts_prog,
7edfd0ef 1962 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1963#endif
396482e1 1964 sv_catpvs(opts_prog,
7edfd0ef
NC
1965 "print \" \\%ENV:\\n @env\\n\" if @env;"
1966 "print \" \\@INC:\\n @INC\\n\";");
1967 }
1968 else {
1969 ++s;
1970 opts_prog = Perl_newSVpvf(aTHX_
1971 "Config::config_vars(qw%c%s%c)",
1972 0, s, 0);
1973 s += strlen(s);
1974 }
1975 av_push(PL_preambleav, opts_prog);
1976 /* don't look for script or read stdin */
1977 scriptname = BIT_BUCKET;
1978 goto reswitch;
6224f72b 1979 }
6224f72b 1980 case 'x':
3280af22 1981 PL_doextract = TRUE;
6224f72b
GS
1982 s++;
1983 if (*s)
f4c556ac 1984 cddir = s;
6224f72b
GS
1985 break;
1986 case 0:
1987 break;
1988 case '-':
1989 if (!*++s || isSPACE(*s)) {
1990 argc--,argv++;
1991 goto switch_end;
1992 }
1993 /* catch use of gnu style long options */
1994 if (strEQ(s, "version")) {
dd374669 1995 s = (char *)"v";
6224f72b
GS
1996 goto reswitch;
1997 }
1998 if (strEQ(s, "help")) {
dd374669 1999 s = (char *)"h";
6224f72b
GS
2000 goto reswitch;
2001 }
2002 s--;
2003 /* FALL THROUGH */
2004 default:
cea2e8a9 2005 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2006 }
2007 }
6224f72b 2008 switch_end:
54310121 2009
f675dbe5
CB
2010 if (
2011#ifndef SECURE_INTERNAL_GETENV
2012 !PL_tainting &&
2013#endif
cf756827 2014 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2015 {
e1ec3a88 2016 const char *popt = s;
74288ac8
GS
2017 while (isSPACE(*s))
2018 s++;
317ea90d 2019 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 2020 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 2021 PL_tainting = TRUE;
317ea90d
MS
2022 PL_taint_warn = FALSE;
2023 }
74288ac8 2024 else {
bd61b366 2025 char *popt_copy = NULL;
74288ac8 2026 while (s && *s) {
4ea8f8fb 2027 char *d;
74288ac8
GS
2028 while (isSPACE(*s))
2029 s++;
2030 if (*s == '-') {
2031 s++;
2032 if (isSPACE(*s))
2033 continue;
2034 }
4ea8f8fb 2035 d = s;
74288ac8
GS
2036 if (!*s)
2037 break;
e4af53b0 2038 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 2039 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2040 while (++s && *s) {
2041 if (isSPACE(*s)) {
cf756827
GS
2042 if (!popt_copy) {
2043 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
2044 s = popt_copy + (s - popt);
2045 d = popt_copy + (d - popt);
2046 }
4ea8f8fb
MS
2047 *s++ = '\0';
2048 break;
2049 }
2050 }
1c4db469 2051 if (*d == 't') {
317ea90d
MS
2052 if( !PL_tainting ) {
2053 PL_taint_warn = TRUE;
2054 PL_tainting = TRUE;
2055 }
1c4db469 2056 } else {
97bd5664 2057 moreswitches(d);
1c4db469 2058 }
6224f72b 2059 }
6224f72b
GS
2060 }
2061 }
a0d0e21e 2062
20ef40cf
GA
2063#ifdef USE_SITECUSTOMIZE
2064 if (!minus_f) {
29a861e7
NC
2065 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2066 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
20ef40cf
GA
2067 }
2068#endif
2069
6224f72b
GS
2070 if (!scriptname)
2071 scriptname = argv[0];
3280af22 2072 if (PL_e_script) {
6224f72b
GS
2073 argc++,argv--;
2074 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2075 }
bd61b366 2076 else if (scriptname == NULL) {
6224f72b
GS
2077#ifdef MSDOS
2078 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2079 moreswitches("h");
6224f72b
GS
2080#endif
2081 scriptname = "-";
2082 }
2083
b7975bdd
NC
2084 /* Set $^X early so that it can be used for relocatable paths in @INC */
2085 assert (!PL_tainted);
2086 TAINT;
2087 S_set_caret_X(aTHX);
2088 TAINT_NOT;
6224f72b
GS
2089 init_perllib();
2090
a52eba0e
NC
2091 {
2092 int suidscript;
2093 const int fdscript
2094 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2095
a52eba0e 2096 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2097
64ca3a65 2098#ifndef PERL_MICRO
a52eba0e
NC
2099# if defined(SIGCHLD) || defined(SIGCLD)
2100 {
2101# ifndef SIGCHLD
2102# define SIGCHLD SIGCLD
2103# endif
2104 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2105 if (sigstate == (Sighandler_t) SIG_IGN) {
2106 if (ckWARN(WARN_SIGNAL))
2107 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2108 "Can't ignore signal CHLD, forcing to default");
2109 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2110 }
0b5b802d 2111 }
a52eba0e 2112# endif
64ca3a65 2113#endif
0b5b802d 2114
a52eba0e 2115 if (PL_doextract
bf4acbe4 2116#ifdef MACOS_TRADITIONAL
a52eba0e 2117 || gMacPerl_AlwaysExtract
bf4acbe4 2118#endif
a52eba0e 2119 ) {
faef540c
NC
2120
2121 /* This will croak if suidscript is >= 0, as -x cannot be used with
2122 setuid scripts. */
2123 forbid_setid('x', suidscript);
2124 /* Hence you can't get here if suidscript >= 0 */
2125
2126 find_beginning();
a52eba0e
NC
2127 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2128 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2129 }
f4c556ac 2130 }
6224f72b 2131
561b68a9 2132 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2133 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2134 CvUNIQUE_on(PL_compcv);
2135
dd2155a4 2136 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2137
0c4f7ff0 2138 boot_core_PerlIO();
6224f72b 2139 boot_core_UNIVERSAL();
09bef843 2140 boot_core_xsutils();
6224f72b
GS
2141
2142 if (xsinit)
acfe0abc 2143 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2144#ifndef PERL_MICRO
d0d72822 2145#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2146 init_os_extras();
6224f72b 2147#endif
64ca3a65 2148#endif
6224f72b 2149
29209bc5 2150#ifdef USE_SOCKS
1b9c9cf5
DH
2151# ifdef HAS_SOCKS5_INIT
2152 socks5_init(argv[0]);
2153# else
29209bc5 2154 SOCKSinit(argv[0]);
1b9c9cf5 2155# endif
ac27b0f5 2156#endif
29209bc5 2157
6224f72b
GS
2158 init_predump_symbols();
2159 /* init_postdump_symbols not currently designed to be called */
2160 /* more than once (ENV isn't cleared first, for example) */
2161 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2162 if (!PL_do_undump)
6224f72b
GS
2163 init_postdump_symbols(argc,argv,env);
2164
27da23d5
JH
2165 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2166 * or explicitly in some platforms.
085a54d9 2167 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2168 * look like the user wants to use UTF-8. */
a0fd4948 2169#if defined(__SYMBIAN32__)
27da23d5
JH
2170 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2171#endif
06e66572
JH
2172 if (PL_unicode) {
2173 /* Requires init_predump_symbols(). */
a05d7ebb 2174 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2175 IO* io;
2176 PerlIO* fp;
2177 SV* sv;
2178
a05d7ebb 2179 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2180 * and the default open disciplines. */
a05d7ebb
JH
2181 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2182 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2183 (fp = IoIFP(io)))
2184 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2185 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2186 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2187 (fp = IoOFP(io)))
2188 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2189 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2190 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2191 (fp = IoOFP(io)))
2192 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2193 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2194 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2195 SVt_PV)))) {
a05d7ebb
JH
2196 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2197 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2198 if (in) {
2199 if (out)
2200 sv_setpvn(sv, ":utf8\0:utf8", 11);
2201 else
2202 sv_setpvn(sv, ":utf8\0", 6);
2203 }
2204 else if (out)
2205 sv_setpvn(sv, "\0:utf8", 6);
2206 SvSETMAGIC(sv);
2207 }
b310b053
JH
2208 }
2209 }
2210
4ffa73a3
JH
2211 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2212 if (strEQ(s, "unsafe"))
2213 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2214 else if (strEQ(s, "safe"))
2215 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2216 else
2217 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2218 }
2219
81d86705
NC
2220#ifdef PERL_MAD
2221 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2222 PL_madskills = 1;
2223 PL_minus_c = 1;
2224 if (!s || !s[0])
2225 PL_xmlfp = PerlIO_stdout();
2226 else {
2227 PL_xmlfp = PerlIO_open(s, "w");
2228 if (!PL_xmlfp)
2229 Perl_croak(aTHX_ "Can't open %s", s);
2230 }
2231 my_setenv("PERL_XMLDUMP", Nullch); /* hide from subprocs */
2232 }
2233 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2234 PL_madskills = atoi(s);
2235 my_setenv("PERL_MADSKILLS", Nullch); /* hide from subprocs */
2236 }
2237#endif
2238
6224f72b
GS
2239 init_lexer();
2240
2241 /* now parse the script */
2242
93189314 2243 SETERRNO(0,SS_NORMAL);
3280af22 2244 PL_error_count = 0;
bf4acbe4
GS
2245#ifdef MACOS_TRADITIONAL
2246 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2247 if (PL_minus_c)
2248 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2249 else {
2250 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2251 MacPerl_MPWFileName(PL_origfilename));
2252 }
2253 }
2254#else
3280af22
NIS
2255 if (yyparse() || PL_error_count) {
2256 if (PL_minus_c)
cea2e8a9 2257 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2258 else {
cea2e8a9 2259 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2260 PL_origfilename);
6224f72b
GS
2261 }
2262 }
bf4acbe4 2263#endif
57843af0 2264 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2265 PL_curstash = PL_defstash;
2266 PL_preprocess = FALSE;
2267 if (PL_e_script) {
2268 SvREFCNT_dec(PL_e_script);
a0714e2c 2269 PL_e_script = NULL;
6224f72b
GS
2270 }
2271
3280af22 2272 if (PL_do_undump)
6224f72b
GS
2273 my_unexec();
2274
57843af0
GS
2275 if (isWARN_ONCE) {
2276 SAVECOPFILE(PL_curcop);
2277 SAVECOPLINE(PL_curcop);
3280af22 2278 gv_check(PL_defstash);
57843af0 2279 }
6224f72b
GS
2280
2281 LEAVE;
2282 FREETMPS;
2283
2284#ifdef MYMALLOC
2285 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2286 dump_mstats("after compilation:");
2287#endif
2288
2289 ENTER;
3280af22 2290 PL_restartop = 0;
312caa8e 2291 return NULL;
6224f72b
GS
2292}
2293
954c1994
GS
2294/*
2295=for apidoc perl_run
2296
2297Tells a Perl interpreter to run. See L<perlembed>.
2298
2299=cut
2300*/
2301
6224f72b 2302int
0cb96387 2303perl_run(pTHXx)
6224f72b 2304{
97aff369 2305 dVAR;
6224f72b 2306 I32 oldscope;
14dd3ad8 2307 int ret = 0;
db36c5a1 2308 dJMPENV;
6224f72b 2309
ed6c66dd 2310 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 2311
3280af22 2312 oldscope = PL_scopestack_ix;
96e176bf
CL
2313#ifdef VMS
2314 VMSISH_HUSHED = 0;
2315#endif
6224f72b 2316
14dd3ad8 2317 JMPENV_PUSH(ret);
6224f72b
GS
2318 switch (ret) {
2319 case 1:
2320 cxstack_ix = -1; /* start context stack again */
312caa8e 2321 goto redo_body;
14dd3ad8 2322 case 0: /* normal completion */
14dd3ad8
GS
2323 redo_body:
2324 run_body(oldscope);
14dd3ad8
GS
2325 /* FALL THROUGH */
2326 case 2: /* my_exit() */
3280af22 2327 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2328 LEAVE;
2329 FREETMPS;
3280af22 2330 PL_curstash = PL_defstash;
3a1ee7e8 2331 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2332 PL_endav && !PL_minus_c)
2333 call_list(oldscope, PL_endav);
6224f72b
GS
2334#ifdef MYMALLOC
2335 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2336 dump_mstats("after execution: ");
2337#endif
37038d91 2338 ret = STATUS_EXIT;
14dd3ad8 2339 break;
6224f72b 2340 case 3:
312caa8e
CS
2341 if (PL_restartop) {
2342 POPSTACK_TO(PL_mainstack);
2343 goto redo_body;
6224f72b 2344 }
bf49b057 2345 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2346 FREETMPS;
14dd3ad8
GS
2347 ret = 1;
2348 break;
6224f72b
GS
2349 }
2350
14dd3ad8
GS
2351 JMPENV_POP;
2352 return ret;
312caa8e
CS
2353}
2354
14dd3ad8 2355
dd374669 2356STATIC void
14dd3ad8
GS
2357S_run_body(pTHX_ I32 oldscope)
2358{
97aff369 2359 dVAR;
6224f72b 2360 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2361 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2362
3280af22 2363 if (!PL_restartop) {
81d86705
NC
2364#ifdef PERL_MAD
2365 if (PL_xmlfp) {
2366 xmldump_all();
2367 exit(0); /* less likely to core dump than my_exit(0) */
2368 }
2369#endif
6224f72b 2370 DEBUG_x(dump_all());
cf2782cd 2371#ifdef DEBUGGING
ecae49c0
NC
2372 if (!DEBUG_q_TEST)
2373 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2374#endif
b900a521
JH
2375 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2376 PTR2UV(thr)));
6224f72b 2377
3280af22 2378 if (PL_minus_c) {
bf4acbe4 2379#ifdef MACOS_TRADITIONAL
e69a2255
JH
2380 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2381 (gMacPerl_ErrorFormat ? "# " : ""),
2382 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2383#else
bf49b057 2384 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2385#endif
6224f72b
GS
2386 my_exit(0);
2387 }
3280af22 2388 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2389 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2390 if (PL_initav)
2391 call_list(oldscope, PL_initav);
6224f72b
GS
2392 }
2393
2394 /* do it */
2395
3280af22 2396 if (PL_restartop) {
533c011a 2397 PL_op = PL_restartop;
3280af22 2398 PL_restartop = 0;
cea2e8a9 2399 CALLRUNOPS(aTHX);
6224f72b 2400 }
3280af22
NIS
2401 else if (PL_main_start) {
2402 CvDEPTH(PL_main_cv) = 1;
533c011a 2403 PL_op = PL_main_start;
cea2e8a9 2404 CALLRUNOPS(aTHX);
6224f72b 2405 }
f6b3007c
JH
2406 my_exit(0);
2407 /* NOTREACHED */
6224f72b
GS
2408}
2409
954c1994 2410/*
ccfc67b7
JH
2411=head1 SV Manipulation Functions
2412
954c1994
GS
2413=for apidoc p||get_sv
2414
2415Returns the SV of the specified Perl scalar. If C<create> is set and the
2416Perl variable does not exist then it will be created. If C<create> is not
2417set and the variable does not exist then NULL is returned.
2418
2419=cut
2420*/
2421
6224f72b 2422SV*
864dbfa3 2423Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2424{
2425 GV *gv;
6224f72b
GS
2426 gv = gv_fetchpv(name, create, SVt_PV);
2427 if (gv)
2428 return GvSV(gv);
a0714e2c 2429 return NULL;
6224f72b
GS
2430}
2431
954c1994 2432/*
ccfc67b7
JH
2433=head1 Array Manipulation Functions
2434
954c1994
GS
2435=for apidoc p||get_av
2436
2437Returns the AV of the specified Perl array. If C<create> is set and the
2438Perl variable does not exist then it will be created. If C<create> is not
2439set and the variable does not exist then NULL is returned.
2440
2441=cut
2442*/
2443
6224f72b 2444AV*
864dbfa3 2445Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2446{
c4420975 2447 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2448 if (create)
2449 return GvAVn(gv);
2450 if (gv)
2451 return GvAV(gv);
7d49f689 2452 return NULL;
6224f72b
GS
2453}
2454
954c1994 2455/*
ccfc67b7
JH
2456=head1 Hash Manipulation Functions
2457
954c1994
GS
2458=for apidoc p||get_hv
2459
2460Returns the HV of the specified Perl hash. If C<create> is set and the
2461Perl variable does not exist then it will be created. If C<create> is not
2462set and the variable does not exist then NULL is returned.
2463
2464=cut
2465*/
2466
6224f72b 2467HV*
864dbfa3 2468Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2469{
890ce7af 2470 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2471 if (create)
2472 return GvHVn(gv);
2473 if (gv)
2474 return GvHV(gv);
5c284bb0 2475 return NULL;
a0d0e21e
LW
2476}
2477
954c1994 2478/*
ccfc67b7
JH
2479=head1 CV Manipulation Functions
2480
780a5241
NC
2481=for apidoc p||get_cvn_flags
2482
2483Returns the CV of the specified Perl subroutine. C<flags> are passed to
2484C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2485exist then it will be declared (which has the same effect as saying
2486C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2487then NULL is returned.
2488
954c1994
GS
2489=for apidoc p||get_cv
2490
780a5241 2491Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2492
2493=cut
2494*/
2495
a0d0e21e 2496CV*
780a5241 2497Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2498{
780a5241 2499 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2500 /* XXX this is probably not what they think they're getting.
2501 * It has the same effect as "sub name;", i.e. just a forward
2502 * declaration! */
780a5241
NC
2503 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2504 SV *const sv = newSVpvn(name,len);
2505 SvFLAGS(sv) |= flags & SVf_UTF8;
774d564b 2506 return newSUB(start_subparse(FALSE, 0),
780a5241 2507 newSVOP(OP_CONST, 0, sv),
5f66b61c 2508 NULL, NULL);
780a5241 2509 }
a0d0e21e 2510 if (gv)
8ebc5c01 2511 return GvCVu(gv);
601f1833 2512 return NULL;
a0d0e21e
LW
2513}
2514
780a5241
NC
2515CV*
2516Perl_get_cv(pTHX_ const char *name, I32 flags)
2517{
2518 return get_cvn_flags(name, strlen(name), flags);
2519}
2520
79072805
LW
2521/* Be sure to refetch the stack pointer after calling these routines. */
2522
954c1994 2523/*
ccfc67b7
JH
2524
2525=head1 Callback Functions
2526
954c1994
GS
2527=for apidoc p||call_argv
2528
2529Performs a callback to the specified Perl sub. See L<perlcall>.
2530
2531=cut
2532*/
2533
a0d0e21e 2534I32
8f42b153 2535Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2536
8ac85365
NIS
2537 /* See G_* flags in cop.h */
2538 /* null terminated arg list */
8990e307 2539{
97aff369 2540 dVAR;
a0d0e21e 2541 dSP;
8990e307 2542
924508f0 2543 PUSHMARK(SP);
a0d0e21e 2544 if (argv) {
8990e307 2545 while (*argv) {
a0d0e21e 2546 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2547 argv++;
2548 }
a0d0e21e 2549 PUTBACK;
8990e307 2550 }
864dbfa3 2551 return call_pv(sub_name, flags);
8990e307
LW
2552}
2553
954c1994
GS
2554/*
2555=for apidoc p||call_pv
2556
2557Performs a callback to the specified Perl sub. See L<perlcall>.
2558
2559=cut
2560*/
2561
a0d0e21e 2562I32
864dbfa3 2563Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2564 /* name of the subroutine */
2565 /* See G_* flags in cop.h */
a0d0e21e 2566{
864dbfa3 2567 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2568}
2569
954c1994
GS
2570/*
2571=for apidoc p||call_method
2572
2573Performs a callback to the specified Perl method. The blessed object must
2574be on the stack. See L<perlcall>.
2575
2576=cut
2577*/
2578
a0d0e21e 2579I32
864dbfa3 2580Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2581 /* name of the subroutine */
2582 /* See G_* flags in cop.h */
a0d0e21e 2583{
968b3946 2584 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2585}
2586
2587/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2588/*
2589=for apidoc p||call_sv
2590
2591Performs a callback to the Perl sub whose name is in the SV. See
2592L<perlcall>.
2593
2594=cut
2595*/
2596
a0d0e21e 2597I32
864dbfa3 2598Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2599 /* See G_* flags in cop.h */
a0d0e21e 2600{
27da23d5 2601 dVAR; dSP;
a0d0e21e 2602 LOGOP myop; /* fake syntax tree node */
968b3946 2603 UNOP method_op;
aa689395 2604 I32 oldmark;
8ea43dc8 2605 VOL I32 retval = 0;
a0d0e21e 2606 I32 oldscope;
54310121 2607 bool oldcatch = CATCH_GET;
6224f72b 2608 int ret;
c4420975 2609 OP* const oldop = PL_op;
db36c5a1 2610 dJMPENV;
1e422769 2611
a0d0e21e
LW
2612 if (flags & G_DISCARD) {
2613 ENTER;
2614 SAVETMPS;
2615 }
2616
aa689395 2617 Zero(&myop, 1, LOGOP);
5f66b61c 2618 myop.op_next = NULL;
f51d4af5 2619 if (!(flags & G_NOARGS))
aa689395 2620 myop.op_flags |= OPf_STACKED;
54310121
PP
2621 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2622 (flags & G_ARRAY) ? OPf_WANT_LIST :
2623 OPf_WANT_SCALAR);
462e5cf6 2624 SAVEOP();
533c011a 2625 PL_op = (OP*)&myop;
aa689395 2626
3280af22
NIS
2627 EXTEND(PL_stack_sp, 1);
2628 *++PL_stack_sp = sv;
aa689395 2629 oldmark = TOPMARK;
3280af22 2630 oldscope = PL_scopestack_ix;
a0d0e21e 2631
3280af22 2632 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2633 /* Handle first BEGIN of -d. */
3280af22 2634 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2635 /* Try harder, since this may have been a sighandler, thus
2636 * curstash may be meaningless. */
3280af22 2637 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2638 && !(flags & G_NODEBUG))
533c011a 2639 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2640
968b3946
GS
2641 if (flags & G_METHOD) {
2642 Zero(&method_op, 1, UNOP);
2643 method_op.op_next = PL_op;
2644 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2645 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2646 PL_op = (OP*)&method_op;
968b3946
GS
2647 }
2648
312caa8e 2649 if (!(flags & G_EVAL)) {
0cdb2077 2650 CATCH_SET(TRUE);
d6f07c05 2651 CALL_BODY_SUB((OP*)&myop);
312caa8e 2652 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2653 CATCH_SET(oldcatch);
312caa8e
CS
2654 }
2655 else {
d78bda3d 2656 myop.op_other = (OP*)&myop;
3280af22 2657 PL_markstack_ptr--;
edb2152a 2658 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2659 PL_markstack_ptr++;
a0d0e21e 2660
14dd3ad8 2661 JMPENV_PUSH(ret);
edb2152a 2662
6224f72b
GS
2663 switch (ret) {
2664 case 0:
14dd3ad8 2665 redo_body:
d6f07c05 2666 CALL_BODY_SUB((OP*)&myop);
312caa8e
CS
2667 retval = PL_stack_sp - (PL_stack_base + oldmark);
2668 if (!(flags & G_KEEPERR))
c69006e4 2669 sv_setpvn(ERRSV,"",0);
a0d0e21e 2670 break;
6224f72b 2671 case 1:
f86702cc 2672 STATUS_ALL_FAILURE;
a0d0e21e 2673 /* FALL THROUGH */
6224f72b 2674 case 2:
a0d0e21e 2675 /* my_exit() was called */
3280af22 2676 PL_curstash = PL_defstash;
a0d0e21e 2677 FREETMPS;
14dd3ad8 2678 JMPENV_POP;
cc3604b1 2679 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2680 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2681 my_exit_jump();
a0d0e21e 2682 /* NOTREACHED */
6224f72b 2683 case 3:
3280af22 2684 if (PL_restartop) {
533c011a 2685 PL_op = PL_restartop;
3280af22 2686 PL_restartop = 0;
312caa8e 2687 goto redo_body;
a0d0e21e 2688 }
3280af22 2689 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2690 if (flags & G_ARRAY)
2691 retval = 0;
2692 else {
2693 retval = 1;
3280af22 2694 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2695 }
312caa8e 2696 break;
a0d0e21e 2697 }
a0d0e21e 2698
edb2152a
NC
2699 if (PL_scopestack_ix > oldscope)
2700 delete_eval_scope();
14dd3ad8 2701 JMPENV_POP;
a0d0e21e 2702 }
1e422769 2703
a0d0e21e 2704 if (flags & G_DISCARD) {
3280af22 2705 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2706 retval = 0;
2707 FREETMPS;
2708 LEAVE;
2709 }
533c011a 2710 PL_op = oldop;
a0d0e21e
LW
2711 return retval;
2712}
2713
6e72f9df 2714/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2715
954c1994
GS
2716/*
2717=for apidoc p||eval_sv
2718
2719Tells Perl to C<eval> the string in the SV.
2720
2721=cut
2722*/
2723
a0d0e21e 2724I32
864dbfa3 2725Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2726
8ac85365 2727 /* See G_* flags in cop.h */
a0d0e21e 2728{
97aff369 2729 dVAR;
924508f0 2730 dSP;
a0d0e21e 2731 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2732 VOL I32 oldmark = SP - PL_stack_base;
2733 VOL I32 retval = 0;
6224f72b 2734 int ret;
c4420975 2735 OP* const oldop = PL_op;
db36c5a1 2736 dJMPENV;
84902520 2737
4633a7c4
LW
2738 if (flags & G_DISCARD) {
2739 ENTER;
2740 SAVETMPS;
2741 }
2742
462e5cf6 2743 SAVEOP();
533c011a
NIS
2744 PL_op = (OP*)&myop;
2745 Zero(PL_op, 1, UNOP);
3280af22
NIS
2746 EXTEND(PL_stack_sp, 1);
2747 *++PL_stack_sp = sv;
79072805 2748
4633a7c4
LW
2749 if (!(flags & G_NOARGS))
2750 myop.op_flags = OPf_STACKED;
5f66b61c 2751 myop.op_next = NULL;
6e72f9df 2752 myop.op_type = OP_ENTEREVAL;
54310121
PP
2753 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2754 (flags & G_ARRAY) ? OPf_WANT_LIST :
2755 OPf_WANT_SCALAR);
6e72f9df
PP
2756 if (flags & G_KEEPERR)
2757 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2758
dedbcade
DM
2759 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2760 * before a PUSHEVAL, which corrupts the stack after a croak */
2761 TAINT_PROPER("eval_sv()");
2762
14dd3ad8 2763 JMPENV_PUSH(ret);
6224f72b
GS
2764 switch (ret) {
2765 case 0:
14dd3ad8 2766 redo_body:
d6f07c05 2767 CALL_BODY_EVAL((OP*)&myop);
312caa8e
CS
2768 retval = PL_stack_sp - (PL_stack_base + oldmark);
2769 if (!(flags & G_KEEPERR))
c69006e4 2770 sv_setpvn(ERRSV,"",0);
4633a7c4 2771 break;
6224f72b 2772 case 1:
f86702cc 2773 STATUS_ALL_FAILURE;
4633a7c4 2774 /* FALL THROUGH */
6224f72b 2775 case 2:
4633a7c4 2776 /* my_exit() was called */
3280af22 2777 PL_curstash = PL_defstash;
4633a7c4 2778 FREETMPS;
14dd3ad8 2779 JMPENV_POP;
cc3604b1 2780 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2781 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2782 my_exit_jump();
4633a7c4 2783 /* NOTREACHED */
6224f72b 2784 case 3:
3280af22 2785 if (PL_restartop) {
533c011a 2786 PL_op = PL_restartop;
3280af22 2787 PL_restartop = 0;
312caa8e 2788 goto redo_body;
4633a7c4 2789 }
3280af22 2790 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2791 if (flags & G_ARRAY)
2792 retval = 0;
2793 else {
2794 retval = 1;
3280af22 2795 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2796 }
312caa8e 2797 break;
4633a7c4
LW
2798 }
2799
14dd3ad8 2800 JMPENV_POP;
4633a7c4 2801 if (flags & G_DISCARD) {
3280af22 2802 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2803 retval = 0;
2804 FREETMPS;
2805 LEAVE;
2806 }
533c011a 2807 PL_op = oldop;
4633a7c4
LW
2808 return retval;
2809}
2810
954c1994
GS
2811/*
2812=for apidoc p||eval_pv
2813
2814Tells Perl to C<eval> the given string and return an SV* result.
2815
2816=cut
2817*/
2818
137443ea 2819SV*
864dbfa3 2820Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2821{
97aff369 2822 dVAR;
137443ea
PP
2823 dSP;
2824 SV* sv = newSVpv(p, 0);
2825
864dbfa3 2826 eval_sv(sv, G_SCALAR);
137443ea
PP
2827 SvREFCNT_dec(sv);
2828
2829 SPAGAIN;
2830 sv = POPs;
2831 PUTBACK;
2832
2d8e6c8d 2833 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2834 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2835 }
137443ea
PP
2836
2837 return sv;
2838}
2839
4633a7c4
LW
2840/* Require a module. */
2841
954c1994 2842/*
ccfc67b7
JH
2843=head1 Embedding Functions
2844
954c1994
GS
2845=for apidoc p||require_pv
2846
7d3fb230
BS
2847Tells Perl to C<require> the file named by the string argument. It is
2848analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2849implemented that way; consider using load_module instead.
954c1994 2850
7d3fb230 2851=cut */
954c1994 2852
4633a7c4 2853void
864dbfa3 2854Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2855{
97aff369 2856 dVAR;
d3acc0f7 2857 dSP;
97aff369 2858 SV* sv;
e788e7d3 2859 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2860 PUTBACK;
be41e5d9
NC
2861 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2862 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2863 SPAGAIN;
2864 POPSTACK;
79072805
LW
2865}
2866
79072805 2867void
e1ec3a88 2868Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2869{
71315bf2 2870 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2871
c4420975 2872 if (gv)
14befaf4 2873 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2874}
2875
76e3520e 2876STATIC void
e1ec3a88 2877S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2878{
ab821d7f 2879 /* This message really ought to be max 23 lines.
75c72d73 2880 * Removed -h because the user already knows that option. Others? */
fb73857a 2881
27da23d5 2882 static const char * const usage_msg[] = {
aefc56c5
SF
2883"-0[octal] specify record separator (\\0, if no argument)",
2884"-A[mod][=pattern] activate all/given assertions",
2885"-a autosplit mode with -n or -p (splits $_ into @F)",
2886"-C[number/list] enables the listed Unicode features",
2887"-c check syntax only (runs BEGIN and CHECK blocks)",
2888"-d[:debugger] run program under debugger",
2889"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2890"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2891"-E program like -e, but enables all optional features",
aefc56c5 2892"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2893"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2894"-i[extension] edit <> files in place (makes backup if extension supplied)",
2895"-Idirectory specify @INC/#include directory (several -I's allowed)",
2896"-l[octal] enable line ending processing, specifies line terminator",
2897"-[mM][-]module execute \"use/no module...\" before executing program",
2898"-n assume \"while (<>) { ... }\" loop around program",
2899"-p assume loop like -n but print line also, like sed",
2900"-P run program through C preprocessor before compilation",
2901"-s enable rudimentary parsing for switches after programfile",
2902"-S look for programfile using PATH environment variable",
2903"-t enable tainting warnings",
2904"-T enable tainting checks",
2905"-u dump core after parsing program",
2906"-U allow unsafe operations",
2907"-v print version, subversion (includes VERY IMPORTANT perl info)",
2908"-V[:variable] print configuration summary (or a single Config.pm variable)",
2909"-w enable many useful warnings (RECOMMENDED)",
2910"-W enable all warnings",
2911"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2912"-X disable all warnings",
fb73857a
PP
2913"\n",
2914NULL
2915};
27da23d5 2916 const char * const *p = usage_msg;
fb73857a 2917
b0e47665
GS
2918 PerlIO_printf(PerlIO_stdout(),
2919 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2920 name);
fb73857a 2921 while (*p)
b0e47665 2922 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2923}
2924
b4ab917c
DM
2925/* convert a string of -D options (or digits) into an int.
2926 * sets *s to point to the char after the options */
2927
2928#ifdef DEBUGGING
2929int
e1ec3a88 2930Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2931{
27da23d5 2932 static const char * const usage_msgd[] = {
e6e64d9b
JC
2933 " Debugging flag values: (see also -d)",
2934 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2935 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2936 " l Context (loop) stack processing",
2937 " t Trace execution",
2938 " o Method and overloading resolution",
2939 " c String/numeric conversions",
2940 " P Print profiling info, preprocessor command for -P, source file input state",
2941 " m Memory allocation",
2942 " f Format processing",
2943 " r Regular expression parsing and execution",
2944 " x Syntax tree dump",
3679267a 2945 " u Tainting checks",
e6e64d9b
JC
2946 " H Hash dump -- usurps values()",
2947 " X Scratchpad allocation",
2948 " D Cleaning up",
2949 " S Thread synchronization",
2950 " T Tokenising",
2951 " R Include reference counts of dumped variables (eg when using -Ds)",
2952 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2953 " v Verbose: use in conjunction with other flags",
2954 " C Copy On Write",
2955 " A Consistency checks on internal structures",
3679267a 2956 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2957 NULL
2958 };
b4ab917c
DM
2959 int i = 0;
2960 if (isALPHA(**s)) {
2961 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2962 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2963
2964 for (; isALNUM(**s); (*s)++) {
c4420975 2965 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2966 if (d)
2967 i |= 1 << (d - debopts);
2968 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2969 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2970 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2971 }
2972 }
e6e64d9b 2973 else if (isDIGIT(**s)) {
b4ab917c
DM
2974 i = atoi(*s);
2975 for (; isALNUM(**s); (*s)++) ;
2976 }
ddcf8bc1 2977 else if (givehelp) {
06e869a4 2978 const char *const *p = usage_msgd;
e6e64d9b
JC
2979 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2980 }
b4ab917c
DM
2981# ifdef EBCDIC
2982 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2983 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2984 "-Dp not implemented on this platform\n");
2985# endif
2986 return i;
2987}
2988#endif
2989
79072805
LW
2990/* This routine handles any switches that can be given during run */
2991
2992char *
97bd5664 2993Perl_moreswitches(pTHX_ char *s)
79072805 2994{
27da23d5 2995 dVAR;
84c133a0 2996 UV rschar;
79072805
LW
2997
2998 switch (*s) {
2999 case '0':
a863c7d1 3000 {
f2095865 3001 I32 flags = 0;
a3b680e6 3002 STRLEN numlen;
f2095865
JH
3003
3004 SvREFCNT_dec(PL_rs);
3005 if (s[1] == 'x' && s[2]) {
a3b680e6 3006 const char *e = s+=2;
f2095865
JH
3007 U8 *tmps;
3008
a3b680e6
AL
3009 while (*e)
3010 e++;
f2095865
JH
3011 numlen = e - s;
3012 flags = PERL_SCAN_SILENT_ILLDIGIT;
3013 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3014 if (s + numlen < e) {
3015 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3016 numlen = 0;
3017 s--;
3018 }
396482e1 3019 PL_rs = newSVpvs("");
c5661c80 3020 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3021 tmps = (U8*)SvPVX(PL_rs);
3022 uvchr_to_utf8(tmps, rschar);
3023 SvCUR_set(PL_rs, UNISKIP(rschar));
3024 SvUTF8_on(PL_rs);
3025 }
3026 else {
3027 numlen = 4;
3028 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3029 if (rschar & ~((U8)~0))
3030 PL_rs = &PL_sv_undef;
3031 else if (!rschar && numlen >= 2)
396482e1 3032 PL_rs = newSVpvs("");
f2095865
JH
3033 else {
3034 char ch = (char)rschar;
3035 PL_rs = newSVpvn(&ch, 1);
3036 }
3037 }
800633c3 3038 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3039 return s + numlen;
a863c7d1 3040 }
46487f74 3041 case 'C':
a05d7ebb 3042 s++;
dd374669 3043 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3044 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3045 PL_utf8cache = -1;
46487f74 3046 return s;
2304df62 3047 case 'F':
3280af22 3048 PL_minus_F = TRUE;
ebce5377
RGS
3049 PL_splitstr = ++s;
3050 while (*s && !isSPACE(*s)) ++s;
e49e380e 3051 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3052 return s;
79072805 3053 case 'a':
3280af22 3054 PL_minus_a = TRUE;
79072805
LW
3055 s++;
3056 return s;
3057 case 'c':
3280af22 3058 PL_minus_c = TRUE;
79072805
LW
3059 s++;
3060 return s;
3061 case 'd':
97bd5664 3062 forbid_setid('d', -1);
4633a7c4 3063 s++;
2cbb2ee1
RGS
3064
3065 /* -dt indicates to the debugger that threads will be used */
3066 if (*s == 't' && !isALNUM(s[1])) {
3067 ++s;
3068 my_setenv("PERL5DB_THREADED", "1");
3069 }
3070
70c94a19
RR
3071 /* The following permits -d:Mod to accepts arguments following an =
3072 in the fashion that -MSome::Mod does. */
3073 if (*s == ':' || *s == '=') {
06b5626a 3074 const char *start;
396482e1 3075 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3076 start = ++s;
3077 /* We now allow -d:Module=Foo,Bar */
3078 while(isALNUM(*s) || *s==':') ++s;
3079 if (*s != '=')
3080 sv_catpv(sv, start);
3081 else {
3082 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3083 /* Don't use NUL as q// delimiter here, this string goes in the
3084 * environment. */
3085 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3086 }
4633a7c4 3087 s += strlen(s);
184f32ec 3088 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3089 }
ed094faf 3090 if (!PL_perldb) {
3280af22 3091 PL_perldb = PERLDB_ALL;
a0d0e21e 3092 init_debugger();
ed094faf 3093 }
79072805
LW
3094 return s;
3095 case 'D':
0453d815 3096 {
79072805 3097#ifdef DEBUGGING
97bd5664 3098 forbid_setid('D', -1);
b4ab917c 3099 s++;
dd374669 3100 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3101#else /* !DEBUGGING */
0453d815 3102 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3103 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3104 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3105 for (s++; isALNUM(*s); s++) ;
79072805 3106#endif
79072805 3107 return s;
0453d815 3108 }
4633a7c4 3109 case 'h':
ac27b0f5 3110 usage(PL_origargv[0]);
7ca617d0 3111 my_exit(0);
79072805 3112 case 'i':
43c5f42d 3113 Safefree(PL_inplace);
c030f24b
GH
3114#if defined(__CYGWIN__) /* do backup extension automagically */
3115 if (*(s+1) == '\0') {
c86a4f2e 3116 PL_inplace = savepvs(".bak");
c030f24b
GH
3117 return s+1;
3118 }
3119#endif /* __CYGWIN__ */
5ef5d758 3120 {
d4c19fe8 3121 const char * const start = ++s;
5ef5d758
NC
3122 while (*s && !isSPACE(*s))
3123 ++s;
3124
3125 PL_inplace = savepvn(start, s - start);
3126 }
7b8d334a 3127 if (*s) {
5ef5d758 3128 ++s;
7b8d334a 3129 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3130 s++;
7b8d334a 3131 }
fb73857a 3132 return s;
4e49a025 3133 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3134 forbid_setid('I', -1);
fb73857a
PP
3135 ++s;
3136 while (*s && isSPACE(*s))
3137 ++s;
3138 if (*s) {
774d564b 3139 char *e, *p;
0df16ed7
GS
3140 p = s;
3141 /* ignore trailing spaces (possibly followed by other switches) */
3142 do {
3143 for (e = p; *e && !isSPACE(*e); e++) ;
3144 p = e;
3145 while (isSPACE(*p))
3146 p++;
3147 } while (*p && *p != '-');
3148 e = savepvn(s, e-s);
88fe16b2 3149 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3150 Safefree(e);
3151 s = p;
3152 if (*s == '-')
3153 s++;
79072805
LW
3154 }
3155 else
a67e862a 3156 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3157 return s;
79072805 3158 case 'l':
3280af22 3159 PL_minus_l = TRUE;
79072805 3160 s++;
7889fe52
NIS
3161 if (PL_ors_sv) {
3162 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3163 PL_ors_sv = NULL;
7889fe52 3164 }
79072805 3165 if (isDIGIT(*s)) {
53305cf1 3166 I32 flags = 0;
a3b680e6 3167 STRLEN numlen;
396482e1 3168 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3169 numlen = 3 + (*s == '0');
3170 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3171 s += numlen;
3172 }
3173 else {
8bfdd7d9 3174 if (RsPARA(PL_rs)) {
396482e1 3175 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3176 }
3177 else {
8bfdd7d9 3178 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3179 }
79072805
LW
3180 }
3181 return s;
06492da6 3182 case 'A':
97bd5664 3183 forbid_setid('A', -1);
aefc56c5
SF
3184 s++;
3185 {
44f8325f 3186 char * const start = s;
396482e1 3187 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3188 while(isALNUM(*s) || *s == ':') ++s;
3189 if (s != start) {
396482e1 3190 sv_catpvs(sv, "::");
aefc56c5
SF
3191 sv_catpvn(sv, start, s-start);
3192 }
3193 if (*s == '=') {
0c5a913d 3194 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3195 s+=strlen(s);
3196 }
3197 else if (*s != '\0') {
551405c4 3198 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3199 }
29a861e7 3200 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
aefc56c5 3201 return s;
06492da6 3202 }
1a30305b 3203 case 'M':
97bd5664 3204 forbid_setid('M', -1); /* XXX ? */
1a30305b
PP
3205 /* FALL THROUGH */
3206 case 'm':
97bd5664 3207 forbid_setid('m', -1); /* XXX ? */
1a30305b 3208 if (*++s) {
a5f75d66 3209 char *start;
11343788 3210 SV *sv;
e1ec3a88 3211 const char *use = "use ";
a5f75d66 3212 /* -M-foo == 'no foo' */
d0043bd1
NC
3213 /* Leading space on " no " is deliberate, to make both
3214 possibilities the same length. */
3215 if (*s == '-') { use = " no "; ++s; }
3216 sv = newSVpvn(use,4);
a5f75d66 3217 start = s;
1a30305b 3218 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3219 while(isALNUM(*s) || *s==':') ++s;
3220 if (*s != '=') {
11343788 3221 sv_catpv(sv, start);
c07a80fd
PP
3222 if (*(start-1) == 'm') {
3223 if (*s != '\0')
cea2e8a9 3224 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3225 sv_catpvs( sv, " ()");
c07a80fd
PP
3226 }
3227 } else {
6df41af2 3228 if (s == start)
be98fb35
GS
3229 Perl_croak(aTHX_ "Module name required with -%c option",
3230 s[-1]);
11343788 3231 sv_catpvn(sv, start, s-start);
396482e1
GA
3232 sv_catpvs(sv, " split(/,/,q");
3233 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3234 sv_catpv(sv, ++s);
396482e1 3235 sv_catpvs(sv, "\0)");
c07a80fd 3236 }
1a30305b 3237 s += strlen(s);
29a861e7 3238 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3239 }
3240 else
9e81e6a1 3241 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3242 return s;
79072805 3243 case 'n':
3280af22 3244 PL_minus_n = TRUE;
79072805
LW
3245 s++;
3246 return s;
3247 case 'p':
3280af22 3248 PL_minus_p = TRUE;
79072805
LW
3249 s++;
3250 return s;
3251 case 's':
97bd5664 3252 forbid_setid('s', -1);
3280af22 3253 PL_doswitches = TRUE;
79072805
LW
3254 s++;
3255 return s;
6537fe72
MS
3256 case 't':
3257 if (!PL_tainting)
22f7c9c9 3258 TOO_LATE_FOR('t');
6537fe72
MS
3259 s++;
3260 return s;
463ee0b2 3261 case 'T':
3280af22 3262 if (!PL_tainting)
22f7c9c9 3263 TOO_LATE_FOR('T');
463ee0b2
LW
3264 s++;
3265 return s;
79072805 3266 case 'u':
bf4acbe4
GS
3267#ifdef MACOS_TRADITIONAL
3268 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3269#endif
3280af22 3270 PL_do_undump = TRUE;
79072805
LW
3271 s++;
3272 return s;
3273 case 'U':
3280af22 3274 PL_unsafe = TRUE;
79072805
LW
3275 s++;
3276 return s;
3277 case 'v':
d7aa5382 3278 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3279 upg_version(PL_patchlevel);
8e9464f1 3280#if !defined(DGUX)
b0e47665 3281 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3282 Perl_form(aTHX_ "\nThis is perl, %"SVf
3283#ifdef PERL_PATCHNUM
3284 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3285#endif
3286 " built for %s",
be2597df 3287 SVfARG(vstringify(PL_patchlevel)),
95b63a38 3288 ARCHNAME));
8e9464f1
JH
3289#else /* DGUX */
3290/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3291 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3292 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3293 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3294 PerlIO_printf(PerlIO_stdout(),
3295 Perl_form(aTHX_ " built under %s at %s %s\n",
3296 OSNAME, __DATE__, __TIME__));
3297 PerlIO_printf(PerlIO_stdout(),
3298 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3299 OSVERS));
8e9464f1
JH
3300#endif /* !DGUX */
3301
fb73857a
PP
3302#if defined(LOCAL_PATCH_COUNT)
3303 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3304 PerlIO_printf(PerlIO_stdout(),
3305 "\n(with %d registered patch%s, "
3306 "see perl -V for more detail)",
bb7a0f54 3307 LOCAL_PATCH_COUNT,
b0e47665 3308 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3309#endif
1a30305b 3310
b0e47665 3311 PerlIO_printf(PerlIO_stdout(),
34ce1597 3312 "\n\nCopyright 1987-2007, Larry Wall\n");
eae9c151
JH
3313#ifdef MACOS_TRADITIONAL
3314 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3315 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3316 "maintained by Chris Nandor\n");
eae9c151 3317#endif
79072805 3318#ifdef MSDOS
b0e47665
GS
3319 PerlIO_printf(PerlIO_stdout(),
3320 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3321#endif
3322#ifdef DJGPP
b0e47665
GS
3323 PerlIO_printf(PerlIO_stdout(),
3324 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3325 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3326#endif
79072805 3327#ifdef OS2
b0e47665
GS
3328 PerlIO_printf(PerlIO_stdout(),
3329 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3330 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3331#endif
79072805 3332#ifdef atarist
b0e47665
GS
3333 PerlIO_printf(PerlIO_stdout(),
3334 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3335#endif
a3f9223b 3336#ifdef __BEOS__
b0e47665
GS
3337 PerlIO_printf(PerlIO_stdout(),
3338 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3339#endif
1d84e8df 3340#ifdef MPE
b0e47665 3341 PerlIO_printf(PerlIO_stdout(),
e583a879 3342 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3343#endif
9d116dd7 3344#ifdef OEMVS
b0e47665
GS
3345 PerlIO_printf(PerlIO_stdout(),
3346 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3347#endif
495c5fdc 3348#ifdef __VOS__
b0e47665 3349 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3350 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3351#endif
092bebab 3352#ifdef __OPEN_VM
b0e47665
GS
3353 PerlIO_printf(PerlIO_stdout(),
3354 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3355#endif
a1a0e61e 3356#ifdef POSIX_BC
b0e47665
GS
3357 PerlIO_printf(PerlIO_stdout(),
3358 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3359#endif
61ae2fbf 3360#ifdef __MINT__
b0e47665
GS
3361 PerlIO_printf(PerlIO_stdout(),
3362 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3363#endif
f83d2536 3364#ifdef EPOC
b0e47665 3365 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3366 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3367#endif
e1caacb4 3368#ifdef UNDER_CE
b475b3e6
JH
3369 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3370 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3371 wce_hitreturn();
3372#endif
a0fd4948 3373#ifdef __SYMBIAN32__
27da23d5
JH
3374 PerlIO_printf(PerlIO_stdout(),
3375 "Symbian port by Nokia, 2004-2005\n");
3376#endif
baed7233
DL
3377#ifdef BINARY_BUILD_NOTICE
3378 BINARY_BUILD_NOTICE;
3379#endif
b0e47665
GS
3380 PerlIO_printf(PerlIO_stdout(),
3381 "\n\
79072805 3382Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3383GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3384Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3385this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3386Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3387 my_exit(0);
79072805 3388 case 'w':
b2e5e6ba 3389 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3390 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3391 }
599cee73
PM
3392 s++;
3393 return s;
3394 case 'W':
ac27b0f5 3395 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3396 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3397 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3398 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3399 s++;
3400 return s;
3401 case 'X':
ac27b0f5 3402 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3403 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3404 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3405 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3406 s++;
3407 return s;
a0d0e21e 3408 case '*':
79072805
LW
3409 case ' ':
3410 if (s[1] == '-') /* Additional switches on #! line. */
3411 return s+2;
3412 break;
a0d0e21e 3413 case '-':
79072805 3414 case 0:
51882d45 3415#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3416 case '\r':
3417#endif
79072805
LW
3418 case '\n':
3419 case '\t':
3420 break;
aa689395
PP
3421#ifdef ALTERNATE_SHEBANG
3422 case 'S': /* OS/2 needs -S on "extproc" line. */
3423 break;
3424#endif
a0d0e21e 3425 case 'P':
3280af22 3426 if (PL_preprocess)
a0d0e21e
LW
3427 return s+1;
3428 /* FALL THROUGH */
79072805 3429 default:
cea2e8a9 3430 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3431 }
bd61b366 3432 return NULL;
79072805
LW
3433}
3434
3435/* compliments of Tom Christiansen */
3436
3437/* unexec() can be found in the Gnu emacs distribution */
ee580363 3438/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3439
3440void
864dbfa3 3441Perl_my_unexec(pTHX)
79072805 3442{
b37c2d43 3443 PERL_UNUSED_CONTEXT;
79072805 3444#ifdef UNEXEC
b37c2d43
AL
3445 SV * prog = newSVpv(BIN_EXP, 0);
3446 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3447 int status = 1;
79072805
LW
3448 extern int etext;
3449
396482e1 3450 sv_catpvs(prog, "/perl");
396482e1 3451 sv_catpvs(file, ".perldump");
79072805 3452
ee580363
GS
3453 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3454 /* unexec prints msg to stderr in case of failure */
6ad3d225 3455 PerlProc_exit(status);
79072805 3456#else
a5f75d66
AD
3457# ifdef VMS
3458# include <lib$routines.h>
3459 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3460# elif defined(WIN32) || defined(__CYGWIN__)
3461 Perl_croak(aTHX_ "dump is not supported");
aa689395 3462# else
79072805 3463 ABORT(); /* for use with undump */
aa689395 3464# endif
a5f75d66 3465#endif
79072805
LW
3466}
3467
cb68f92d
GS
3468/* initialize curinterp */
3469STATIC void
cea2e8a9 3470S_init_interp(pTHX)
cb68f92d 3471{
97aff369 3472 dVAR;
acfe0abc
GS
3473#ifdef MULTIPLICITY
3474# define PERLVAR(var,type)
3475# define PERLVARA(var,n,type)
3476# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3477# define PERLVARI(var,type,init) aTHX->var = init;
3478# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3479# else
acfe0abc
GS
3480# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3481# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3482# endif
acfe0abc 3483# include "intrpvar.h"
b7f7fff6 3484# include "thrdvar.h"
acfe0abc
GS
3485# undef PERLVAR
3486# undef PERLVARA
3487# undef PERLVARI
3488# undef PERLVARIC
3489#else
3490# define PERLVAR(var,type)
3491# define PERLVARA(var,n,type)
3492# define PERLVARI(var,type,init) PL_##var = init;
3493# define PERLVARIC(var,type,init) PL_##var = init;
3494# include "intrpvar.h"
b7f7fff6 3495# include "thrdvar.h"
acfe0abc
GS
3496# undef PERLVAR
3497# undef PERLVARA
3498# undef PERLVARI
3499# undef PERLVARIC
cb68f92d
GS
3500#endif
3501
46ab3289
NC