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CommitLineData
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1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
fdf8c088 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 by Larry Wall and others
a687059c 5 *
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6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
a687059c 8 *
8d063cd8
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9 */
10
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11/*
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
13 */
45d8adaa 14
166f8a29
DM
15/* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
19 */
20
ae3f3efd
PS
21/* PSz 12 Nov 03
22 *
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
26 *
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
32 *
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
38 *
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
42 *
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
45 *
46 * References:
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
55 * CVE candidate:
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
011f1a1a
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85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
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95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
bf357333
NC
99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
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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;
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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 }
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NC
174#if defined(USE_ITHREADS)
175 else
176#else
177 /* This always happens for non-ithreads */
178#endif
179 {
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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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196 Zero(my_perl, 1, PerlInterpreter);
197 PL_Mem = ipM;
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198 PL_MemShared = ipMS;
199 PL_MemParse = ipMP;
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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/*
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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);
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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) {
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263 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
264
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265 PL_linestr = newSV_type(SVt_PVIV);
266 SvGROW(PL_linestr, 80);
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);
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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);
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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);
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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
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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 }
a4a109c2
JD
1559
1560#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1561 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1562 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1563 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1564 ||
1565 (aligned &&
1566 (PL_origenviron[0] > s &&
1567 PL_origenviron[0] <=
1568 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1569 )
1570 {
9d419b5f 1571#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1572 s = PL_origenviron[0];
1573 while (*s) s++;
1574#endif
bd61b366 1575 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1576 /* Force copy of environment. */
1577 for (i = 1; PL_origenviron[i]; i++) {
1578 if (PL_origenviron[i] == s + 1
1579 ||
1580 (aligned &&
1581 (PL_origenviron[i] > s &&
1582 PL_origenviron[i] <=
1583 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1584 )
1585 {
1586 s = PL_origenviron[i];
1587 while (*s) s++;
1588 }
1589 else
1590 break;
54bfe034 1591 }
43c32782 1592 }
54bfe034 1593 }
a4a109c2
JD
1594#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1595
2d2af554 1596 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1597 }
1598
3280af22 1599 if (PL_do_undump) {
a0d0e21e
LW
1600
1601 /* Come here if running an undumped a.out. */
1602
3280af22
NIS
1603 PL_origfilename = savepv(argv[0]);
1604 PL_do_undump = FALSE;
a0d0e21e 1605 cxstack_ix = -1; /* start label stack again */
748a9306 1606 init_ids();
b7975bdd
NC
1607 assert (!PL_tainted);
1608 TAINT;
1609 S_set_caret_X(aTHX);
1610 TAINT_NOT;
a0d0e21e
LW
1611 init_postdump_symbols(argc,argv,env);
1612 return 0;
1613 }
1614
3280af22 1615 if (PL_main_root) {
3280af22 1616 op_free(PL_main_root);
5f66b61c 1617 PL_main_root = NULL;
ff0cee69 1618 }
5f66b61c 1619 PL_main_start = NULL;
3280af22 1620 SvREFCNT_dec(PL_main_cv);
601f1833 1621 PL_main_cv = NULL;
79072805 1622
3280af22
NIS
1623 time(&PL_basetime);
1624 oldscope = PL_scopestack_ix;
599cee73 1625 PL_dowarn = G_WARN_OFF;
f86702cc 1626
14dd3ad8 1627 JMPENV_PUSH(ret);
6224f72b 1628 switch (ret) {
312caa8e 1629 case 0:
14dd3ad8 1630 parse_body(env,xsinit);
3c10abe3
AG
1631 if (PL_unitcheckav)
1632 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1633 if (PL_checkav)
1634 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1635 ret = 0;
1636 break;
6224f72b
GS
1637 case 1:
1638 STATUS_ALL_FAILURE;
1639 /* FALL THROUGH */
1640 case 2:
1641 /* my_exit() was called */
3280af22 1642 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1643 LEAVE;
1644 FREETMPS;
3280af22 1645 PL_curstash = PL_defstash;
3c10abe3
AG
1646 if (PL_unitcheckav)
1647 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1648 if (PL_checkav)
1649 call_list(oldscope, PL_checkav);
37038d91 1650 ret = STATUS_EXIT;
14dd3ad8 1651 break;
6224f72b 1652 case 3:
bf49b057 1653 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1654 ret = 1;
1655 break;
6224f72b 1656 }
14dd3ad8
GS
1657 JMPENV_POP;
1658 return ret;
1659}
1660
312caa8e 1661STATIC void *
14dd3ad8 1662S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1663{
27da23d5 1664 dVAR;
312caa8e 1665 int argc = PL_origargc;
8f42b153 1666 char **argv = PL_origargv;
e1ec3a88 1667 const char *scriptname = NULL;
312caa8e 1668 VOL bool dosearch = FALSE;
e1ec3a88 1669 const char *validarg = "";
312caa8e 1670 register SV *sv;
47f56822 1671 register char *s, c;
bd61b366 1672 const char *cddir = NULL;
ab019eaa 1673#ifdef USE_SITECUSTOMIZE
20ef40cf 1674 bool minus_f = FALSE;
ab019eaa 1675#endif
312caa8e 1676
3280af22 1677 sv_setpvn(PL_linestr,"",0);
396482e1 1678 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1679 SAVEFREESV(sv);
1680 init_main_stash();
54310121 1681
6224f72b
GS
1682 for (argc--,argv++; argc > 0; argc--,argv++) {
1683 if (argv[0][0] != '-' || !argv[0][1])
1684 break;
1685#ifdef DOSUID
1686 if (*validarg)
1687 validarg = " PHOOEY ";
1688 else
1689 validarg = argv[0];
ae3f3efd
PS
1690 /*
1691 * Can we rely on the kernel to start scripts with argv[1] set to
1692 * contain all #! line switches (the whole line)? (argv[0] is set to
1693 * the interpreter name, argv[2] to the script name; argv[3] and
1694 * above may contain other arguments.)
1695 */
13281fa4 1696#endif
6224f72b
GS
1697 s = argv[0]+1;
1698 reswitch:
47f56822 1699 switch ((c = *s)) {
729a02f2 1700 case 'C':
1d5472a9
GS
1701#ifndef PERL_STRICT_CR
1702 case '\r':
1703#endif
6224f72b
GS
1704 case ' ':
1705 case '0':
1706 case 'F':
1707 case 'a':
1708 case 'c':
1709 case 'd':
1710 case 'D':
1711 case 'h':
1712 case 'i':
1713 case 'l':
1714 case 'M':
1715 case 'm':
1716 case 'n':
1717 case 'p':
1718 case 's':
1719 case 'u':
1720 case 'U':
1721 case 'v':
599cee73
PM
1722 case 'W':
1723 case 'X':
6224f72b 1724 case 'w':
06492da6 1725 case 'A':
97bd5664 1726 if ((s = moreswitches(s)))
6224f72b
GS
1727 goto reswitch;
1728 break;
33b78306 1729
1dbad523 1730 case 't':
22f7c9c9 1731 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1732 if( !PL_tainting ) {
1733 PL_taint_warn = TRUE;
1734 PL_tainting = TRUE;
1735 }
1736 s++;
1737 goto reswitch;
6224f72b 1738 case 'T':
22f7c9c9 1739 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1740 PL_tainting = TRUE;
317ea90d 1741 PL_taint_warn = FALSE;
6224f72b
GS
1742 s++;
1743 goto reswitch;
f86702cc 1744
bc9b29db
RH
1745 case 'E':
1746 PL_minus_E = TRUE;
1747 /* FALL THROUGH */
6224f72b 1748 case 'e':
bf4acbe4
GS
1749#ifdef MACOS_TRADITIONAL
1750 /* ignore -e for Dev:Pseudo argument */
1751 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1752 break;
bf4acbe4 1753#endif
a52eba0e 1754 forbid_setid('e', -1);
3280af22 1755 if (!PL_e_script) {
396482e1 1756 PL_e_script = newSVpvs("");
0cb96387 1757 filter_add(read_e_script, NULL);
6224f72b
GS
1758 }
1759 if (*++s)
3280af22 1760 sv_catpv(PL_e_script, s);
6224f72b 1761 else if (argv[1]) {
3280af22 1762 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1763 argc--,argv++;
1764 }
1765 else
47f56822 1766 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1767 sv_catpvs(PL_e_script, "\n");
6224f72b 1768 break;
afe37c7d 1769
20ef40cf 1770 case 'f':
f5542d3a 1771#ifdef USE_SITECUSTOMIZE
20ef40cf 1772 minus_f = TRUE;
f5542d3a 1773#endif
20ef40cf
GA
1774 s++;
1775 goto reswitch;
1776
6224f72b 1777 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1778 forbid_setid('I', -1);
bd61b366 1779 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1780 argc--,argv++;
1781 }
6224f72b 1782 if (s && *s) {
0df16ed7 1783 STRLEN len = strlen(s);
aec46f14 1784 const char * const p = savepvn(s, len);
88fe16b2 1785 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1786 sv_catpvs(sv, "-I");
0df16ed7 1787 sv_catpvn(sv, p, len);
396482e1 1788 sv_catpvs(sv, " ");
6224f72b 1789 Safefree(p);
0df16ed7
GS
1790 }
1791 else
a67e862a 1792 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1793 break;
1794 case 'P':
a52eba0e 1795 forbid_setid('P', -1);
3280af22 1796 PL_preprocess = TRUE;
6224f72b
GS
1797 s++;
1798 goto reswitch;
1799 case 'S':
a52eba0e 1800 forbid_setid('S', -1);
6224f72b
GS
1801 dosearch = TRUE;
1802 s++;
1803 goto reswitch;
1804 case 'V':
7edfd0ef
NC
1805 {
1806 SV *opts_prog;
1807
29a861e7 1808 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
7edfd0ef
NC
1809 if (*++s != ':') {
1810 STRLEN opts;
1811
396482e1 1812 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1813#ifdef VMS
396482e1 1814 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1815#else
396482e1 1816 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1817#endif
7edfd0ef 1818 opts = SvCUR(opts_prog);
efcaa95b 1819
9cd7d3f2 1820 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1821# ifdef DEBUGGING
e2e4dbf1 1822 " DEBUGGING"
6224f72b 1823# endif
4f185743
NC
1824# ifdef DEBUG_LEAKING_SCALARS
1825 " DEBUG_LEAKING_SCALARS"
1826# endif
85e1fcb9 1827# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1828 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1829# endif
1830# ifdef FAKE_THREADS
e2e4dbf1 1831 " FAKE_THREADS"
85e1fcb9 1832# endif
6224f72b 1833# ifdef MULTIPLICITY
e2e4dbf1 1834 " MULTIPLICITY"
6224f72b 1835# endif
85e1fcb9 1836# ifdef MYMALLOC
e2e4dbf1 1837 " MYMALLOC"
85e1fcb9 1838# endif
3bcf5ed8
SP
1839# ifdef NO_MATHOMS
1840 " NO_MATHOMS"
1841# endif
85e1fcb9 1842# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1843 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1844# endif
1845# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1846 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1847# endif
1848# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1849 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1850# endif
1851# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1852 " PERL_IMPLICIT_SYS"
85e1fcb9 1853# endif
a724edfe
NC
1854# ifdef PERL_MAD
1855 " PERL_MAD"
1856# endif
85e1fcb9 1857# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1858 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1859# endif
1860# ifdef PERL_NEED_APPCTX
e2e4dbf1 1861 " PERL_NEED_APPCTX"
85e1fcb9
SH
1862# endif
1863# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1864 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1865# endif
1866# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1867 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1868# endif
9c0a4d5d
DM
1869# ifdef PERL_TRACK_MEMPOOL
1870 " PERL_TRACK_MEMPOOL"
1871# endif
417cd4a8
SP
1872# ifdef PERL_USE_SAFE_PUTENV
1873 " PERL_USE_SAFE_PUTENV"
1874# endif
ca0c25f6
NC
1875#ifdef PERL_USES_PL_PIDSTATUS
1876 " PERL_USES_PL_PIDSTATUS"
1877#endif
85e1fcb9 1878# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1879 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1880# endif
1881# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1882 " THREADS_HAVE_PIDS"
85e1fcb9 1883# endif
85e1fcb9 1884# ifdef USE_64_BIT_ALL
e2e4dbf1 1885 " USE_64_BIT_ALL"
ac5e8965 1886# endif
10cc9d2a 1887# ifdef USE_64_BIT_INT
e2e4dbf1 1888 " USE_64_BIT_INT"
10cc9d2a 1889# endif
85e1fcb9 1890# ifdef USE_ITHREADS
e2e4dbf1 1891 " USE_ITHREADS"
85e1fcb9
SH
1892# endif
1893# ifdef USE_LARGE_FILES
e2e4dbf1 1894 " USE_LARGE_FILES"
ac5e8965
JH
1895# endif
1896# ifdef USE_LONG_DOUBLE
e2e4dbf1 1897 " USE_LONG_DOUBLE"
ac5e8965 1898# endif
85e1fcb9 1899# ifdef USE_PERLIO
e2e4dbf1 1900 " USE_PERLIO"
53430762 1901# endif
85e1fcb9 1902# ifdef USE_REENTRANT_API
e2e4dbf1 1903 " USE_REENTRANT_API"
85e1fcb9
SH
1904# endif
1905# ifdef USE_SFIO
e2e4dbf1 1906 " USE_SFIO"
ac5e8965 1907# endif
20ef40cf 1908# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1909 " USE_SITECUSTOMIZE"
20ef40cf 1910# endif
85e1fcb9 1911# ifdef USE_SOCKS
e2e4dbf1 1912 " USE_SOCKS"
b363f7ed 1913# endif
e2e4dbf1 1914 );
efcaa95b 1915
7edfd0ef
NC
1916 while (SvCUR(opts_prog) > opts+76) {
1917 /* find last space after "options: " and before col 76
1918 */
efcaa95b 1919
7edfd0ef 1920 const char *space;
c4420975 1921 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1922 const char c = pv[opts+76];
1923 pv[opts+76] = '\0';
1924 space = strrchr(pv+opts+26, ' ');
1925 pv[opts+76] = c;
1926 if (!space) break; /* "Can't happen" */
efcaa95b 1927
7edfd0ef 1928 /* break the line before that space */
efcaa95b 1929
7edfd0ef 1930 opts = space - pv;
89529cee 1931 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1932 STR_WITH_LEN("\\n "));
7edfd0ef 1933 }
efcaa95b 1934
396482e1 1935 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1936
6224f72b 1937#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1938 if (LOCAL_PATCH_COUNT > 0) {
1939 int i;
396482e1 1940 sv_catpvs(opts_prog,
7edfd0ef
NC
1941 "\" Locally applied patches:\\n\",");
1942 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1943 if (PL_localpatches[i])
1944 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1945 0, PL_localpatches[i], 0);
1946 }
6224f72b 1947 }
6224f72b 1948#endif
7edfd0ef
NC
1949 Perl_sv_catpvf(aTHX_ opts_prog,
1950 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1951#ifdef __DATE__
1952# ifdef __TIME__
7edfd0ef
NC
1953 Perl_sv_catpvf(aTHX_ opts_prog,
1954 ",\" Compiled at %s %s\\n\"",__DATE__,
1955 __TIME__);
6224f72b 1956# else
7edfd0ef
NC
1957 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1958 __DATE__);
6224f72b
GS
1959# endif
1960#endif
396482e1 1961 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1962 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1963 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1964#ifdef __CYGWIN__
396482e1 1965 sv_catpvs(opts_prog,
7edfd0ef 1966 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1967#endif
396482e1 1968 sv_catpvs(opts_prog,
7edfd0ef
NC
1969 "print \" \\%ENV:\\n @env\\n\" if @env;"
1970 "print \" \\@INC:\\n @INC\\n\";");
1971 }
1972 else {
1973 ++s;
1974 opts_prog = Perl_newSVpvf(aTHX_
1975 "Config::config_vars(qw%c%s%c)",
1976 0, s, 0);
1977 s += strlen(s);
1978 }
1979 av_push(PL_preambleav, opts_prog);
1980 /* don't look for script or read stdin */
1981 scriptname = BIT_BUCKET;
1982 goto reswitch;
6224f72b 1983 }
6224f72b 1984 case 'x':
3280af22 1985 PL_doextract = TRUE;
6224f72b
GS
1986 s++;
1987 if (*s)
f4c556ac 1988 cddir = s;
6224f72b
GS
1989 break;
1990 case 0:
1991 break;
1992 case '-':
1993 if (!*++s || isSPACE(*s)) {
1994 argc--,argv++;
1995 goto switch_end;
1996 }
1997 /* catch use of gnu style long options */
1998 if (strEQ(s, "version")) {
dd374669 1999 s = (char *)"v";
6224f72b
GS
2000 goto reswitch;
2001 }
2002 if (strEQ(s, "help")) {
dd374669 2003 s = (char *)"h";
6224f72b
GS
2004 goto reswitch;
2005 }
2006 s--;
2007 /* FALL THROUGH */
2008 default:
cea2e8a9 2009 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2010 }
2011 }
6224f72b 2012 switch_end:
54310121 2013
f675dbe5
CB
2014 if (
2015#ifndef SECURE_INTERNAL_GETENV
2016 !PL_tainting &&
2017#endif
cf756827 2018 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2019 {
e1ec3a88 2020 const char *popt = s;
74288ac8
GS
2021 while (isSPACE(*s))
2022 s++;
317ea90d 2023 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 2024 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 2025 PL_tainting = TRUE;
317ea90d
MS
2026 PL_taint_warn = FALSE;
2027 }
74288ac8 2028 else {
bd61b366 2029 char *popt_copy = NULL;
74288ac8 2030 while (s && *s) {
4ea8f8fb 2031 char *d;
74288ac8
GS
2032 while (isSPACE(*s))
2033 s++;
2034 if (*s == '-') {
2035 s++;
2036 if (isSPACE(*s))
2037 continue;
2038 }
4ea8f8fb 2039 d = s;
74288ac8
GS
2040 if (!*s)
2041 break;
e4af53b0 2042 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 2043 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2044 while (++s && *s) {
2045 if (isSPACE(*s)) {
cf756827
GS
2046 if (!popt_copy) {
2047 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
2048 s = popt_copy + (s - popt);
2049 d = popt_copy + (d - popt);
2050 }
4ea8f8fb
MS
2051 *s++ = '\0';
2052 break;
2053 }
2054 }
1c4db469 2055 if (*d == 't') {
317ea90d
MS
2056 if( !PL_tainting ) {
2057 PL_taint_warn = TRUE;
2058 PL_tainting = TRUE;
2059 }
1c4db469 2060 } else {
97bd5664 2061 moreswitches(d);
1c4db469 2062 }
6224f72b 2063 }
6224f72b
GS
2064 }
2065 }
a0d0e21e 2066
20ef40cf
GA
2067#ifdef USE_SITECUSTOMIZE
2068 if (!minus_f) {
29a861e7
NC
2069 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2070 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
20ef40cf
GA
2071 }
2072#endif
2073
6224f72b
GS
2074 if (!scriptname)
2075 scriptname = argv[0];
3280af22 2076 if (PL_e_script) {
6224f72b
GS
2077 argc++,argv--;
2078 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2079 }
bd61b366 2080 else if (scriptname == NULL) {
6224f72b
GS
2081#ifdef MSDOS
2082 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2083 moreswitches("h");
6224f72b
GS
2084#endif
2085 scriptname = "-";
2086 }
2087
b7975bdd
NC
2088 /* Set $^X early so that it can be used for relocatable paths in @INC */
2089 assert (!PL_tainted);
2090 TAINT;
2091 S_set_caret_X(aTHX);
2092 TAINT_NOT;
6224f72b
GS
2093 init_perllib();
2094
a52eba0e
NC
2095 {
2096 int suidscript;
2097 const int fdscript
2098 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2099
a52eba0e 2100 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2101
64ca3a65 2102#ifndef PERL_MICRO
a52eba0e
NC
2103# if defined(SIGCHLD) || defined(SIGCLD)
2104 {
2105# ifndef SIGCHLD
2106# define SIGCHLD SIGCLD
2107# endif
2108 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2109 if (sigstate == (Sighandler_t) SIG_IGN) {
2110 if (ckWARN(WARN_SIGNAL))
2111 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2112 "Can't ignore signal CHLD, forcing to default");
2113 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2114 }
0b5b802d 2115 }
a52eba0e 2116# endif
64ca3a65 2117#endif
0b5b802d 2118
a52eba0e 2119 if (PL_doextract
bf4acbe4 2120#ifdef MACOS_TRADITIONAL
a52eba0e 2121 || gMacPerl_AlwaysExtract
bf4acbe4 2122#endif
a52eba0e 2123 ) {
faef540c
NC
2124
2125 /* This will croak if suidscript is >= 0, as -x cannot be used with
2126 setuid scripts. */
2127 forbid_setid('x', suidscript);
2128 /* Hence you can't get here if suidscript >= 0 */
2129
2130 find_beginning();
a52eba0e
NC
2131 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2132 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2133 }
f4c556ac 2134 }
6224f72b 2135
b9f83d2f 2136 PL_main_cv = PL_compcv = (CV*)newSV_type(SVt_PVCV);
3280af22
NIS
2137 CvUNIQUE_on(PL_compcv);
2138
dd2155a4 2139 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2140
0c4f7ff0 2141 boot_core_PerlIO();
6224f72b 2142 boot_core_UNIVERSAL();
09bef843 2143 boot_core_xsutils();
6224f72b
GS
2144
2145 if (xsinit)
acfe0abc 2146 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2147#ifndef PERL_MICRO
d0d72822 2148#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2149 init_os_extras();
6224f72b 2150#endif
64ca3a65 2151#endif
6224f72b 2152
29209bc5 2153#ifdef USE_SOCKS
1b9c9cf5
DH
2154# ifdef HAS_SOCKS5_INIT
2155 socks5_init(argv[0]);
2156# else
29209bc5 2157 SOCKSinit(argv[0]);
1b9c9cf5 2158# endif
ac27b0f5 2159#endif
29209bc5 2160
6224f72b
GS
2161 init_predump_symbols();
2162 /* init_postdump_symbols not currently designed to be called */
2163 /* more than once (ENV isn't cleared first, for example) */
2164 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2165 if (!PL_do_undump)
6224f72b
GS
2166 init_postdump_symbols(argc,argv,env);
2167
27da23d5
JH
2168 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2169 * or explicitly in some platforms.
085a54d9 2170 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2171 * look like the user wants to use UTF-8. */
a0fd4948 2172#if defined(__SYMBIAN32__)
27da23d5
JH
2173 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2174#endif
06e66572
JH
2175 if (PL_unicode) {
2176 /* Requires init_predump_symbols(). */
a05d7ebb 2177 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2178 IO* io;
2179 PerlIO* fp;
2180 SV* sv;
2181
a05d7ebb 2182 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2183 * and the default open disciplines. */
a05d7ebb
JH
2184 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2185 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2186 (fp = IoIFP(io)))
2187 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2188 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2189 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2190 (fp = IoOFP(io)))
2191 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2192 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2193 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2194 (fp = IoOFP(io)))
2195 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2196 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2197 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2198 SVt_PV)))) {
a05d7ebb
JH
2199 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2200 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2201 if (in) {
2202 if (out)
2203 sv_setpvn(sv, ":utf8\0:utf8", 11);
2204 else
2205 sv_setpvn(sv, ":utf8\0", 6);
2206 }
2207 else if (out)
2208 sv_setpvn(sv, "\0:utf8", 6);
2209 SvSETMAGIC(sv);
2210 }
b310b053
JH
2211 }
2212 }
2213
4ffa73a3
JH
2214 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2215 if (strEQ(s, "unsafe"))
2216 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2217 else if (strEQ(s, "safe"))
2218 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2219 else
2220 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2221 }
2222
81d86705
NC
2223#ifdef PERL_MAD
2224 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2225 PL_madskills = 1;
2226 PL_minus_c = 1;
2227 if (!s || !s[0])
2228 PL_xmlfp = PerlIO_stdout();
2229 else {
2230 PL_xmlfp = PerlIO_open(s, "w");
2231 if (!PL_xmlfp)
2232 Perl_croak(aTHX_ "Can't open %s", s);
2233 }
2234 my_setenv("PERL_XMLDUMP", Nullch); /* hide from subprocs */
2235 }
2236 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2237 PL_madskills = atoi(s);
2238 my_setenv("PERL_MADSKILLS", Nullch); /* hide from subprocs */
2239 }
2240#endif
2241
6224f72b
GS
2242 init_lexer();
2243
2244 /* now parse the script */
2245
93189314 2246 SETERRNO(0,SS_NORMAL);
3280af22 2247 PL_error_count = 0;
bf4acbe4
GS
2248#ifdef MACOS_TRADITIONAL
2249 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2250 if (PL_minus_c)
2251 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2252 else {
2253 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2254 MacPerl_MPWFileName(PL_origfilename));
2255 }
2256 }
2257#else
3280af22
NIS
2258 if (yyparse() || PL_error_count) {
2259 if (PL_minus_c)
cea2e8a9 2260 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2261 else {
cea2e8a9 2262 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2263 PL_origfilename);
6224f72b
GS
2264 }
2265 }
bf4acbe4 2266#endif
57843af0 2267 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2268 PL_curstash = PL_defstash;
2269 PL_preprocess = FALSE;
2270 if (PL_e_script) {
2271 SvREFCNT_dec(PL_e_script);
a0714e2c 2272 PL_e_script = NULL;
6224f72b
GS
2273 }
2274
3280af22 2275 if (PL_do_undump)
6224f72b
GS
2276 my_unexec();
2277
57843af0
GS
2278 if (isWARN_ONCE) {
2279 SAVECOPFILE(PL_curcop);
2280 SAVECOPLINE(PL_curcop);
3280af22 2281 gv_check(PL_defstash);
57843af0 2282 }
6224f72b
GS
2283
2284 LEAVE;
2285 FREETMPS;
2286
2287#ifdef MYMALLOC
2288 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2289 dump_mstats("after compilation:");
2290#endif
2291
2292 ENTER;
3280af22 2293 PL_restartop = 0;
312caa8e 2294 return NULL;
6224f72b
GS
2295}
2296
954c1994
GS
2297/*
2298=for apidoc perl_run
2299
2300Tells a Perl interpreter to run. See L<perlembed>.
2301
2302=cut
2303*/
2304
6224f72b 2305int
0cb96387 2306perl_run(pTHXx)
6224f72b 2307{
97aff369 2308 dVAR;
6224f72b 2309 I32 oldscope;
14dd3ad8 2310 int ret = 0;
db36c5a1 2311 dJMPENV;
6224f72b 2312
ed6c66dd 2313 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 2314
3280af22 2315 oldscope = PL_scopestack_ix;
96e176bf
CL
2316#ifdef VMS
2317 VMSISH_HUSHED = 0;
2318#endif
6224f72b 2319
14dd3ad8 2320 JMPENV_PUSH(ret);
6224f72b
GS
2321 switch (ret) {
2322 case 1:
2323 cxstack_ix = -1; /* start context stack again */
312caa8e 2324 goto redo_body;
14dd3ad8 2325 case 0: /* normal completion */
14dd3ad8
GS
2326 redo_body:
2327 run_body(oldscope);
14dd3ad8
GS
2328 /* FALL THROUGH */
2329 case 2: /* my_exit() */
3280af22 2330 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2331 LEAVE;
2332 FREETMPS;
3280af22 2333 PL_curstash = PL_defstash;
3a1ee7e8 2334 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2335 PL_endav && !PL_minus_c)
2336 call_list(oldscope, PL_endav);
6224f72b
GS
2337#ifdef MYMALLOC
2338 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2339 dump_mstats("after execution: ");
2340#endif
37038d91 2341 ret = STATUS_EXIT;
14dd3ad8 2342 break;
6224f72b 2343 case 3:
312caa8e
CS
2344 if (PL_restartop) {
2345 POPSTACK_TO(PL_mainstack);
2346 goto redo_body;
6224f72b 2347 }
bf49b057 2348 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2349 FREETMPS;
14dd3ad8
GS
2350 ret = 1;
2351 break;
6224f72b
GS
2352 }
2353
14dd3ad8
GS
2354 JMPENV_POP;
2355 return ret;
312caa8e
CS
2356}
2357
14dd3ad8 2358
dd374669 2359STATIC void
14dd3ad8
GS
2360S_run_body(pTHX_ I32 oldscope)
2361{
97aff369 2362 dVAR;
6224f72b 2363 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2364 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2365
3280af22 2366 if (!PL_restartop) {
81d86705
NC
2367#ifdef PERL_MAD
2368 if (PL_xmlfp) {
2369 xmldump_all();
2370 exit(0); /* less likely to core dump than my_exit(0) */
2371 }
2372#endif
6224f72b 2373 DEBUG_x(dump_all());
cf2782cd 2374#ifdef DEBUGGING
ecae49c0
NC
2375 if (!DEBUG_q_TEST)
2376 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2377#endif
b900a521
JH
2378 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2379 PTR2UV(thr)));
6224f72b 2380
3280af22 2381 if (PL_minus_c) {
bf4acbe4 2382#ifdef MACOS_TRADITIONAL
e69a2255
JH
2383 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2384 (gMacPerl_ErrorFormat ? "# " : ""),
2385 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2386#else
bf49b057 2387 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2388#endif
6224f72b
GS
2389 my_exit(0);
2390 }
3280af22 2391 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2392 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2393 if (PL_initav)
2394 call_list(oldscope, PL_initav);
6224f72b
GS
2395 }
2396
2397 /* do it */
2398
3280af22 2399 if (PL_restartop) {
533c011a 2400 PL_op = PL_restartop;
3280af22 2401 PL_restartop = 0;
cea2e8a9 2402 CALLRUNOPS(aTHX);
6224f72b 2403 }
3280af22
NIS
2404 else if (PL_main_start) {
2405 CvDEPTH(PL_main_cv) = 1;
533c011a 2406 PL_op = PL_main_start;
cea2e8a9 2407 CALLRUNOPS(aTHX);
6224f72b 2408 }
f6b3007c
JH
2409 my_exit(0);
2410 /* NOTREACHED */
6224f72b
GS
2411}
2412
954c1994 2413/*
ccfc67b7
JH
2414=head1 SV Manipulation Functions
2415
954c1994
GS
2416=for apidoc p||get_sv
2417
2418Returns the SV of the specified Perl scalar. If C<create> is set and the
2419Perl variable does not exist then it will be created. If C<create> is not
2420set and the variable does not exist then NULL is returned.
2421
2422=cut
2423*/
2424
6224f72b 2425SV*
864dbfa3 2426Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2427{
2428 GV *gv;
6224f72b
GS
2429 gv = gv_fetchpv(name, create, SVt_PV);
2430 if (gv)
2431 return GvSV(gv);
a0714e2c 2432 return NULL;
6224f72b
GS
2433}
2434
954c1994 2435/*
ccfc67b7
JH
2436=head1 Array Manipulation Functions
2437
954c1994
GS
2438=for apidoc p||get_av
2439
2440Returns the AV of the specified Perl array. If C<create> is set and the
2441Perl variable does not exist then it will be created. If C<create> is not
2442set and the variable does not exist then NULL is returned.
2443
2444=cut
2445*/
2446
6224f72b 2447AV*
864dbfa3 2448Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2449{
c4420975 2450 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2451 if (create)
2452 return GvAVn(gv);
2453 if (gv)
2454 return GvAV(gv);
7d49f689 2455 return NULL;
6224f72b
GS
2456}
2457
954c1994 2458/*
ccfc67b7
JH
2459=head1 Hash Manipulation Functions
2460
954c1994
GS
2461=for apidoc p||get_hv
2462
2463Returns the HV of the specified Perl hash. If C<create> is set and the
2464Perl variable does not exist then it will be created. If C<create> is not
2465set and the variable does not exist then NULL is returned.
2466
2467=cut
2468*/
2469
6224f72b 2470HV*
864dbfa3 2471Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2472{
890ce7af 2473 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2474 if (create)
2475 return GvHVn(gv);
2476 if (gv)
2477 return GvHV(gv);
5c284bb0 2478 return NULL;
a0d0e21e
LW
2479}
2480
954c1994 2481/*
ccfc67b7
JH
2482=head1 CV Manipulation Functions
2483
780a5241
NC
2484=for apidoc p||get_cvn_flags
2485
2486Returns the CV of the specified Perl subroutine. C<flags> are passed to
2487C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2488exist then it will be declared (which has the same effect as saying
2489C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2490then NULL is returned.
2491
954c1994
GS
2492=for apidoc p||get_cv
2493
780a5241 2494Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2495
2496=cut
2497*/
2498
a0d0e21e 2499CV*
780a5241 2500Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2501{
780a5241 2502 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2503 /* XXX this is probably not what they think they're getting.
2504 * It has the same effect as "sub name;", i.e. just a forward
2505 * declaration! */
780a5241
NC
2506 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2507 SV *const sv = newSVpvn(name,len);
2508 SvFLAGS(sv) |= flags & SVf_UTF8;
774d564b 2509 return newSUB(start_subparse(FALSE, 0),
780a5241 2510 newSVOP(OP_CONST, 0, sv),
5f66b61c 2511 NULL, NULL);
780a5241 2512 }
a0d0e21e 2513 if (gv)
8ebc5c01 2514 return GvCVu(gv);
601f1833 2515 return NULL;
a0d0e21e
LW
2516}
2517
780a5241
NC
2518CV*
2519Perl_get_cv(pTHX_ const char *name, I32 flags)
2520{
2521 return get_cvn_flags(name, strlen(name), flags);
2522}
2523
79072805
LW
2524/* Be sure to refetch the stack pointer after calling these routines. */
2525
954c1994 2526/*
ccfc67b7
JH
2527
2528=head1 Callback Functions
2529
954c1994
GS
2530=for apidoc p||call_argv
2531
2532Performs a callback to the specified Perl sub. See L<perlcall>.
2533
2534=cut
2535*/
2536
a0d0e21e 2537I32
8f42b153 2538Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2539
8ac85365
NIS
2540 /* See G_* flags in cop.h */
2541 /* null terminated arg list */
8990e307 2542{
97aff369 2543 dVAR;
a0d0e21e 2544 dSP;
8990e307 2545
924508f0 2546 PUSHMARK(SP);
a0d0e21e 2547 if (argv) {
8990e307 2548 while (*argv) {
a0d0e21e 2549 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2550 argv++;
2551 }
a0d0e21e 2552 PUTBACK;
8990e307 2553 }
864dbfa3 2554 return call_pv(sub_name, flags);
8990e307
LW
2555}
2556
954c1994
GS
2557/*
2558=for apidoc p||call_pv
2559
2560Performs a callback to the specified Perl sub. See L<perlcall>.
2561
2562=cut
2563*/
2564
a0d0e21e 2565I32
864dbfa3 2566Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2567 /* name of the subroutine */
2568 /* See G_* flags in cop.h */
a0d0e21e 2569{
864dbfa3 2570 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2571}
2572
954c1994
GS
2573/*
2574=for apidoc p||call_method
2575
2576Performs a callback to the specified Perl method. The blessed object must
2577be on the stack. See L<perlcall>.
2578
2579=cut
2580*/
2581
a0d0e21e 2582I32
864dbfa3 2583Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2584 /* name of the subroutine */
2585 /* See G_* flags in cop.h */
a0d0e21e 2586{
968b3946 2587 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2588}
2589
2590/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2591/*
2592=for apidoc p||call_sv
2593
2594Performs a callback to the Perl sub whose name is in the SV. See
2595L<perlcall>.
2596
2597=cut
2598*/
2599
a0d0e21e 2600I32
864dbfa3 2601Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2602 /* See G_* flags in cop.h */
a0d0e21e 2603{
27da23d5 2604 dVAR; dSP;
a0d0e21e 2605 LOGOP myop; /* fake syntax tree node */
968b3946 2606 UNOP method_op;
aa689395 2607 I32 oldmark;
8ea43dc8 2608 VOL I32 retval = 0;
a0d0e21e 2609 I32 oldscope;
54310121 2610 bool oldcatch = CATCH_GET;
6224f72b 2611 int ret;
c4420975 2612 OP* const oldop = PL_op;
db36c5a1 2613 dJMPENV;
1e422769 2614
a0d0e21e
LW
2615 if (flags & G_DISCARD) {
2616 ENTER;
2617 SAVETMPS;
2618 }
2619
aa689395 2620 Zero(&myop, 1, LOGOP);
5f66b61c 2621 myop.op_next = NULL;
f51d4af5 2622 if (!(flags & G_NOARGS))
aa689395 2623 myop.op_flags |= OPf_STACKED;
54310121
PP
2624 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2625 (flags & G_ARRAY) ? OPf_WANT_LIST :
2626 OPf_WANT_SCALAR);
462e5cf6 2627 SAVEOP();
533c011a 2628 PL_op = (OP*)&myop;
aa689395 2629
3280af22
NIS
2630 EXTEND(PL_stack_sp, 1);
2631 *++PL_stack_sp = sv;
aa689395 2632 oldmark = TOPMARK;
3280af22 2633 oldscope = PL_scopestack_ix;
a0d0e21e 2634
3280af22 2635 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2636 /* Handle first BEGIN of -d. */
3280af22 2637 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2638 /* Try harder, since this may have been a sighandler, thus
2639 * curstash may be meaningless. */
3280af22 2640 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2641 && !(flags & G_NODEBUG))
533c011a 2642 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2643
968b3946
GS
2644 if (flags & G_METHOD) {
2645 Zero(&method_op, 1, UNOP);
2646 method_op.op_next = PL_op;
2647 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2648 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2649 PL_op = (OP*)&method_op;
968b3946
GS
2650 }
2651
312caa8e 2652 if (!(flags & G_EVAL)) {
0cdb2077 2653 CATCH_SET(TRUE);
d6f07c05 2654 CALL_BODY_SUB((OP*)&myop);
312caa8e 2655 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2656 CATCH_SET(oldcatch);
312caa8e
CS
2657 }
2658 else {
d78bda3d 2659 myop.op_other = (OP*)&myop;
3280af22 2660 PL_markstack_ptr--;
edb2152a 2661 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2662 PL_markstack_ptr++;
a0d0e21e 2663
14dd3ad8 2664 JMPENV_PUSH(ret);
edb2152a 2665
6224f72b
GS
2666 switch (ret) {
2667 case 0:
14dd3ad8 2668 redo_body:
d6f07c05 2669 CALL_BODY_SUB((OP*)&myop);
312caa8e
CS
2670 retval = PL_stack_sp - (PL_stack_base + oldmark);
2671 if (!(flags & G_KEEPERR))
c69006e4 2672 sv_setpvn(ERRSV,"",0);
a0d0e21e 2673 break;
6224f72b 2674 case 1:
f86702cc 2675 STATUS_ALL_FAILURE;
a0d0e21e 2676 /* FALL THROUGH */
6224f72b 2677 case 2:
a0d0e21e 2678 /* my_exit() was called */
3280af22 2679 PL_curstash = PL_defstash;
a0d0e21e 2680 FREETMPS;
14dd3ad8 2681 JMPENV_POP;
cc3604b1 2682 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2683 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2684 my_exit_jump();
a0d0e21e 2685 /* NOTREACHED */
6224f72b 2686 case 3:
3280af22 2687 if (PL_restartop) {
533c011a 2688 PL_op = PL_restartop;
3280af22 2689 PL_restartop = 0;
312caa8e 2690 goto redo_body;
a0d0e21e 2691 }
3280af22 2692 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2693 if (flags & G_ARRAY)
2694 retval = 0;
2695 else {
2696 retval = 1;
3280af22 2697 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2698 }
312caa8e 2699 break;
a0d0e21e 2700 }
a0d0e21e 2701
edb2152a
NC
2702 if (PL_scopestack_ix > oldscope)
2703 delete_eval_scope();
14dd3ad8 2704 JMPENV_POP;
a0d0e21e 2705 }
1e422769 2706
a0d0e21e 2707 if (flags & G_DISCARD) {
3280af22 2708 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2709 retval = 0;
2710 FREETMPS;
2711 LEAVE;
2712 }
533c011a 2713 PL_op = oldop;
a0d0e21e
LW
2714 return retval;
2715}
2716
6e72f9df 2717/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2718
954c1994
GS
2719/*
2720=for apidoc p||eval_sv
2721
2722Tells Perl to C<eval> the string in the SV.
2723
2724=cut
2725*/
2726
a0d0e21e 2727I32
864dbfa3 2728Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2729
8ac85365 2730 /* See G_* flags in cop.h */
a0d0e21e 2731{
97aff369 2732 dVAR;
924508f0 2733 dSP;
a0d0e21e 2734 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2735 VOL I32 oldmark = SP - PL_stack_base;
2736 VOL I32 retval = 0;
6224f72b 2737 int ret;
c4420975 2738 OP* const oldop = PL_op;
db36c5a1 2739 dJMPENV;
84902520 2740
4633a7c4
LW
2741 if (flags & G_DISCARD) {
2742 ENTER;
2743 SAVETMPS;
2744 }
2745
462e5cf6 2746 SAVEOP();
533c011a
NIS
2747 PL_op = (OP*)&myop;
2748 Zero(PL_op, 1, UNOP);
3280af22
NIS
2749 EXTEND(PL_stack_sp, 1);
2750 *++PL_stack_sp = sv;
79072805 2751
4633a7c4
LW
2752 if (!(flags & G_NOARGS))
2753 myop.op_flags = OPf_STACKED;
5f66b61c 2754 myop.op_next = NULL;
6e72f9df 2755 myop.op_type = OP_ENTEREVAL;
54310121
PP
2756 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2757 (flags & G_ARRAY) ? OPf_WANT_LIST :
2758 OPf_WANT_SCALAR);
6e72f9df
PP
2759 if (flags & G_KEEPERR)
2760 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2761
dedbcade
DM
2762 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2763 * before a PUSHEVAL, which corrupts the stack after a croak */
2764 TAINT_PROPER("eval_sv()");
2765
14dd3ad8 2766 JMPENV_PUSH(ret);
6224f72b
GS
2767 switch (ret) {
2768 case 0:
14dd3ad8 2769 redo_body:
d6f07c05 2770 CALL_BODY_EVAL((OP*)&myop);
312caa8e
CS
2771 retval = PL_stack_sp - (PL_stack_base + oldmark);
2772 if (!(flags & G_KEEPERR))
c69006e4 2773 sv_setpvn(ERRSV,"",0);
4633a7c4 2774 break;
6224f72b 2775 case 1:
f86702cc 2776 STATUS_ALL_FAILURE;
4633a7c4 2777 /* FALL THROUGH */
6224f72b 2778 case 2:
4633a7c4 2779 /* my_exit() was called */
3280af22 2780 PL_curstash = PL_defstash;
4633a7c4 2781 FREETMPS;
14dd3ad8 2782 JMPENV_POP;
cc3604b1 2783 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2784 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2785 my_exit_jump();
4633a7c4 2786 /* NOTREACHED */
6224f72b 2787 case 3:
3280af22 2788 if (PL_restartop) {
533c011a 2789 PL_op = PL_restartop;
3280af22 2790 PL_restartop = 0;
312caa8e 2791 goto redo_body;
4633a7c4 2792 }
3280af22 2793 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2794 if (flags & G_ARRAY)
2795 retval = 0;
2796 else {
2797 retval = 1;
3280af22 2798 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2799 }
312caa8e 2800 break;
4633a7c4
LW
2801 }
2802
14dd3ad8 2803 JMPENV_POP;
4633a7c4 2804 if (flags & G_DISCARD) {
3280af22 2805 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2806 retval = 0;
2807 FREETMPS;
2808 LEAVE;
2809 }
533c011a 2810 PL_op = oldop;
4633a7c4
LW
2811 return retval;
2812}
2813
954c1994
GS
2814/*
2815=for apidoc p||eval_pv
2816
2817Tells Perl to C<eval> the given string and return an SV* result.
2818
2819=cut
2820*/
2821
137443ea 2822SV*
864dbfa3 2823Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2824{
97aff369 2825 dVAR;
137443ea
PP
2826 dSP;
2827 SV* sv = newSVpv(p, 0);
2828
864dbfa3 2829 eval_sv(sv, G_SCALAR);
137443ea
PP
2830 SvREFCNT_dec(sv);
2831
2832 SPAGAIN;
2833 sv = POPs;
2834 PUTBACK;
2835
2d8e6c8d 2836 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2837 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2838 }
137443ea
PP
2839
2840 return sv;
2841}
2842
4633a7c4
LW
2843/* Require a module. */
2844
954c1994 2845/*
ccfc67b7
JH
2846=head1 Embedding Functions
2847
954c1994
GS
2848=for apidoc p||require_pv
2849
7d3fb230
BS
2850Tells Perl to C<require> the file named by the string argument. It is
2851analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2852implemented that way; consider using load_module instead.
954c1994 2853
7d3fb230 2854=cut */
954c1994 2855
4633a7c4 2856void
864dbfa3 2857Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2858{
97aff369 2859 dVAR;
d3acc0f7 2860 dSP;
97aff369 2861 SV* sv;
e788e7d3 2862 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2863 PUTBACK;
be41e5d9
NC
2864 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2865 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2866 SPAGAIN;
2867 POPSTACK;
79072805
LW
2868}
2869
79072805 2870void
e1ec3a88 2871Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2872{
71315bf2 2873 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2874
c4420975 2875 if (gv)
14befaf4 2876 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2877}
2878
76e3520e 2879STATIC void
e1ec3a88 2880S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2881{
ab821d7f 2882 /* This message really ought to be max 23 lines.
75c72d73 2883 * Removed -h because the user already knows that option. Others? */
fb73857a 2884
27da23d5 2885 static const char * const usage_msg[] = {
aefc56c5
SF
2886"-0[octal] specify record separator (\\0, if no argument)",
2887"-A[mod][=pattern] activate all/given assertions",
2888"-a autosplit mode with -n or -p (splits $_ into @F)",
2889"-C[number/list] enables the listed Unicode features",
2890"-c check syntax only (runs BEGIN and CHECK blocks)",
2891"-d[:debugger] run program under debugger",
2892"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2893"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2894"-E program like -e, but enables all optional features",
aefc56c5 2895"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2896"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2897"-i[extension] edit <> files in place (makes backup if extension supplied)",
2898"-Idirectory specify @INC/#include directory (several -I's allowed)",
2899"-l[octal] enable line ending processing, specifies line terminator",
2900"-[mM][-]module execute \"use/no module...\" before executing program",
2901"-n assume \"while (<>) { ... }\" loop around program",
2902"-p assume loop like -n but print line also, like sed",
2903"-P run program through C preprocessor before compilation",
2904"-s enable rudimentary parsing for switches after programfile",
2905"-S look for programfile using PATH environment variable",
2906"-t enable tainting warnings",
2907"-T enable tainting checks",
2908"-u dump core after parsing program",
2909"-U allow unsafe operations",
2910"-v print version, subversion (includes VERY IMPORTANT perl info)",
2911"-V[:variable] print configuration summary (or a single Config.pm variable)",
2912"-w enable many useful warnings (RECOMMENDED)",
2913"-W enable all warnings",
2914"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2915"-X disable all warnings",
fb73857a
PP
2916"\n",
2917NULL
2918};
27da23d5 2919 const char * const *p = usage_msg;
fb73857a 2920
b0e47665
GS
2921 PerlIO_printf(PerlIO_stdout(),
2922 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2923 name);
fb73857a 2924 while (*p)
b0e47665 2925 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2926}
2927
b4ab917c
DM
2928/* convert a string of -D options (or digits) into an int.
2929 * sets *s to point to the char after the options */
2930
2931#ifdef DEBUGGING
2932int
e1ec3a88 2933Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2934{
27da23d5 2935 static const char * const usage_msgd[] = {
e6e64d9b
JC
2936 " Debugging flag values: (see also -d)",
2937 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2938 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2939 " l Context (loop) stack processing",
2940 " t Trace execution",
2941 " o Method and overloading resolution",
2942 " c String/numeric conversions",
2943 " P Print profiling info, preprocessor command for -P, source file input state",
2944 " m Memory allocation",
2945 " f Format processing",
2946 " r Regular expression parsing and execution",
2947 " x Syntax tree dump",
3679267a 2948 " u Tainting checks",
e6e64d9b
JC
2949 " H Hash dump -- usurps values()",
2950 " X Scratchpad allocation",
2951 " D Cleaning up",
2952 " S Thread synchronization",
2953 " T Tokenising",
2954 " R Include reference counts of dumped variables (eg when using -Ds)",
2955 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2956 " v Verbose: use in conjunction with other flags",
2957 " C Copy On Write",
2958 " A Consistency checks on internal structures",
3679267a 2959 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2960 NULL
2961 };
b4ab917c
DM
2962 int i = 0;
2963 if (isALPHA(**s)) {
2964 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2965 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2966
2967 for (; isALNUM(**s); (*s)++) {
c4420975 2968 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2969 if (d)
2970 i |= 1 << (d - debopts);
2971 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2972 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2973 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2974 }
2975 }
e6e64d9b 2976 else if (isDIGIT(**s)) {
b4ab917c
DM
2977 i = atoi(*s);
2978 for (; isALNUM(**s); (*s)++) ;
2979 }
ddcf8bc1 2980 else if (givehelp) {
06e869a4 2981 const char *const *p = usage_msgd;
e6e64d9b
JC
2982 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2983 }
b4ab917c
DM
2984# ifdef EBCDIC
2985 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2986 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2987 "-Dp not implemented on this platform\n");
2988# endif
2989 return i;
2990}
2991#endif
2992
79072805
LW
2993/* This routine handles any switches that can be given during run */
2994
2995char *
97bd5664 2996Perl_moreswitches(pTHX_ char *s)
79072805 2997{
27da23d5 2998 dVAR;
84c133a0 2999 UV rschar;
79072805
LW
3000
3001 switch (*s) {
3002 case '0':
a863c7d1 3003 {
f2095865 3004 I32 flags = 0;
a3b680e6 3005 STRLEN numlen;
f2095865
JH
3006
3007 SvREFCNT_dec(PL_rs);
3008 if (s[1] == 'x' && s[2]) {
a3b680e6 3009 const char *e = s+=2;
f2095865
JH
3010 U8 *tmps;
3011
a3b680e6
AL
3012 while (*e)
3013 e++;
f2095865
JH
3014 numlen = e - s;
3015 flags = PERL_SCAN_SILENT_ILLDIGIT;
3016 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3017 if (s + numlen < e) {
3018 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3019 numlen = 0;
3020 s--;
3021 }
396482e1 3022 PL_rs = newSVpvs("");
c5661c80 3023 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3024 tmps = (U8*)SvPVX(PL_rs);
3025 uvchr_to_utf8(tmps, rschar);
3026 SvCUR_set(PL_rs, UNISKIP(rschar));
3027 SvUTF8_on(PL_rs);
3028 }
3029 else {
3030 numlen = 4;
3031 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3032 if (rschar & ~((U8)~0))
3033 PL_rs = &PL_sv_undef;
3034 else if (!rschar && numlen >= 2)
396482e1 3035 PL_rs = newSVpvs("");
f2095865
JH
3036 else {
3037 char ch = (char)rschar;
3038 PL_rs = newSVpvn(&ch, 1);
3039 }
3040 }
800633c3 3041 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3042 return s + numlen;
a863c7d1 3043 }
46487f74 3044 case 'C':
a05d7ebb 3045 s++;
dd374669 3046 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3047 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3048 PL_utf8cache = -1;
46487f74 3049 return s;
2304df62 3050 case 'F':
3280af22 3051 PL_minus_F = TRUE;
ebce5377
RGS
3052 PL_splitstr = ++s;
3053 while (*s && !isSPACE(*s)) ++s;
e49e380e 3054 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3055 return s;
79072805 3056 case 'a':
3280af22 3057 PL_minus_a = TRUE;
79072805
LW
3058 s++;
3059 return s;
3060 case 'c':
3280af22 3061 PL_minus_c = TRUE;
79072805
LW
3062 s++;
3063 return s;
3064 case 'd':
97bd5664 3065 forbid_setid('d', -1);
4633a7c4 3066 s++;
2cbb2ee1
RGS
3067
3068 /* -dt indicates to the debugger that threads will be used */
3069 if (*s == 't' && !isALNUM(s[1])) {
3070 ++s;
3071 my_setenv("PERL5DB_THREADED", "1");
3072 }
3073
70c94a19
RR
3074 /* The following permits -d:Mod to accepts arguments following an =
3075 in the fashion that -MSome::Mod does. */
3076 if (*s == ':' || *s == '=') {
06b5626a 3077 const char *start;
396482e1 3078 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3079 start = ++s;
3080 /* We now allow -d:Module=Foo,Bar */
3081 while(isALNUM(*s) || *s==':') ++s;
3082 if (*s != '=')
3083 sv_catpv(sv, start);
3084 else {
3085 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3086 /* Don't use NUL as q// delimiter here, this string goes in the
3087 * environment. */
3088 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3089 }
4633a7c4 3090 s += strlen(s);
184f32ec 3091 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3092 }
ed094faf 3093 if (!PL_perldb) {
3280af22 3094 PL_perldb = PERLDB_ALL;
a0d0e21e 3095 init_debugger();
ed094faf 3096 }
79072805
LW
3097 return s;
3098 case 'D':
0453d815 3099 {
79072805 3100#ifdef DEBUGGING
97bd5664 3101 forbid_setid('D', -1);
b4ab917c 3102 s++;
dd374669 3103 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3104#else /* !DEBUGGING */
0453d815 3105 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3106 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3107 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3108 for (s++; isALNUM(*s); s++) ;
79072805 3109#endif
79072805 3110 return s;
0453d815 3111 }
4633a7c4 3112 case 'h':
ac27b0f5 3113 usage(PL_origargv[0]);
7ca617d0 3114 my_exit(0);
79072805 3115 case 'i':
43c5f42d 3116 Safefree(PL_inplace);
c030f24b
GH
3117#if defined(__CYGWIN__) /* do backup extension automagically */
3118 if (*(s+1) == '\0') {
c86a4f2e 3119 PL_inplace = savepvs(".bak");
c030f24b
GH
3120 return s+1;
3121 }
3122#endif /* __CYGWIN__ */
5ef5d758 3123 {
d4c19fe8 3124 const char * const start = ++s;
5ef5d758
NC
3125 while (*s && !isSPACE(*s))
3126 ++s;
3127
3128 PL_inplace = savepvn(start, s - start);
3129 }
7b8d334a 3130 if (*s) {
5ef5d758 3131 ++s;
7b8d334a 3132 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3133 s++;
7b8d334a 3134 }
fb73857a 3135 return s;
4e49a025 3136 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3137 forbid_setid('I', -1);
fb73857a
PP
3138 ++s;
3139 while (*s && isSPACE(*s))
3140 ++s;
3141 if (*s) {
774d564b 3142 char *e, *p;
0df16ed7
GS
3143 p = s;
3144 /* ignore trailing spaces (possibly followed by other switches) */
3145 do {
3146 for (e = p; *e && !isSPACE(*e); e++) ;
3147 p = e;
3148 while (isSPACE(*p))
3149 p++;
3150 } while (*p && *p != '-');
3151 e = savepvn(s, e-s);
88fe16b2 3152 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3153 Safefree(e);
3154 s = p;
3155 if (*s == '-')
3156 s++;
79072805
LW
3157 }
3158 else
a67e862a 3159 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3160 return s;
79072805 3161 case 'l':
3280af22 3162 PL_minus_l = TRUE;
79072805 3163 s++;
7889fe52
NIS
3164 if (PL_ors_sv) {
3165 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3166 PL_ors_sv = NULL;
7889fe52 3167 }
79072805 3168 if (isDIGIT(*s)) {
53305cf1 3169 I32 flags = 0;
a3b680e6 3170 STRLEN numlen;
396482e1 3171 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3172 numlen = 3 + (*s == '0');
3173 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3174 s += numlen;
3175 }
3176 else {
8bfdd7d9 3177 if (RsPARA(PL_rs)) {
396482e1 3178 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3179 }
3180 else {
8bfdd7d9 3181 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3182 }
79072805
LW
3183 }
3184 return s;
06492da6 3185 case 'A':
97bd5664 3186 forbid_setid('A', -1);
aefc56c5
SF
3187 s++;
3188 {
44f8325f 3189 char * const start = s;
396482e1 3190 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3191 while(isALNUM(*s) || *s == ':') ++s;
3192 if (s != start) {
396482e1 3193 sv_catpvs(sv, "::");
aefc56c5
SF
3194 sv_catpvn(sv, start, s-start);
3195 }
3196 if (*s == '=') {
0c5a913d 3197 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3198 s+=strlen(s);
3199 }
3200 else if (*s != '\0') {
551405c4 3201 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3202 }
29a861e7 3203 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
aefc56c5 3204 return s;
06492da6 3205 }
1a30305b 3206 case 'M':
97bd5664 3207 forbid_setid('M', -1); /* XXX ? */
1a30305b
PP
3208 /* FALL THROUGH */
3209 case 'm':
97bd5664 3210 forbid_setid('m', -1); /* XXX ? */
1a30305b 3211 if (*++s) {
a5f75d66 3212 char *start;
11343788 3213 SV *sv;
e1ec3a88 3214 const char *use = "use ";
a5f75d66 3215 /* -M-foo == 'no foo' */
d0043bd1
NC
3216 /* Leading space on " no " is deliberate, to make both
3217 possibilities the same length. */
3218 if (*s == '-') { use = " no "; ++s; }
3219 sv = newSVpvn(use,4);
a5f75d66 3220 start = s;
1a30305b 3221 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3222 while(isALNUM(*s) || *s==':') ++s;
3223 if (*s != '=') {
11343788 3224 sv_catpv(sv, start);
c07a80fd
PP
3225 if (*(start-1) == 'm') {
3226 if (*s != '\0')
cea2e8a9 3227 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3228 sv_catpvs( sv, " ()");
c07a80fd
PP
3229 }
3230 } else {
6df41af2 3231 if (s == start)
be98fb35
GS
3232 Perl_croak(aTHX_ "Module name required with -%c option",
3233 s[-1]);
11343788 3234 sv_catpvn(sv, start, s-start);
396482e1
GA
3235 sv_catpvs(sv, " split(/,/,q");
3236 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3237 sv_catpv(sv, ++s);
396482e1 3238 sv_catpvs(sv, "\0)");
c07a80fd 3239 }
1a30305b 3240 s += strlen(s);
29a861e7 3241 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3242 }
3243 else
9e81e6a1 3244 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3245 return s;
79072805 3246 case 'n':
3280af22 3247 PL_minus_n = TRUE;
79072805
LW
3248 s++;
3249 return s;
3250 case 'p':
3280af22 3251 PL_minus_p = TRUE;
79072805
LW
3252 s++;
3253 return s;
3254 case 's':
97bd5664 3255 forbid_setid('s', -1);
3280af22 3256 PL_doswitches = TRUE;
79072805
LW
3257 s++;
3258 return s;
6537fe72
MS
3259 case 't':
3260 if (!PL_tainting)
22f7c9c9 3261 TOO_LATE_FOR('t');
6537fe72
MS
3262 s++;
3263 return s;
463ee0b2 3264 case 'T':
3280af22 3265 if (!PL_tainting)
22f7c9c9 3266 TOO_LATE_FOR('T');
463ee0b2
LW
3267 s++;
3268 return s;
79072805 3269 case 'u':
bf4acbe4
GS
3270#ifdef MACOS_TRADITIONAL
3271 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3272#endif
3280af22 3273 PL_do_undump = TRUE;
79072805
LW
3274 s++;
3275 return s;
3276 case 'U':
3280af22 3277 PL_unsafe = TRUE;
79072805
LW
3278 s++;
3279 return s;
3280 case 'v':
d7aa5382 3281 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3282 upg_version(PL_patchlevel, TRUE);
8e9464f1 3283#if !defined(DGUX)
b0e47665 3284 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3285 Perl_form(aTHX_ "\nThis is perl, %"SVf
3286#ifdef PERL_PATCHNUM
3287 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3288#endif
3289 " built for %s",
be2597df 3290 SVfARG(vstringify(PL_patchlevel)),
95b63a38 3291 ARCHNAME));
8e9464f1
JH
3292#else /* DGUX */
3293/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3294 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3295 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3296 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3297 PerlIO_printf(PerlIO_stdout(),
3298 Perl_form(aTHX_ " built under %s at %s %s\n",
3299 OSNAME, __DATE__, __TIME__));
3300 PerlIO_printf(PerlIO_stdout(),
3301 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3302 OSVERS));
8e9464f1
JH
3303#endif /* !DGUX */
3304
fb73857a
PP
3305#if defined(LOCAL_PATCH_COUNT)
3306 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3307 PerlIO_printf(PerlIO_stdout(),
3308 "\n(with %d registered patch%s, "
3309 "see perl -V for more detail)",
bb7a0f54 3310 LOCAL_PATCH_COUNT,
b0e47665 3311 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3312#endif
1a30305b 3313
b0e47665 3314 PerlIO_printf(PerlIO_stdout(),
34ce1597 3315 "\n\nCopyright 1987-2007, Larry Wall\n");
eae9c151
JH
3316#ifdef MACOS_TRADITIONAL
3317 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3318 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3319 "maintained by Chris Nandor\n");
eae9c151 3320#endif
79072805 3321#ifdef MSDOS
b0e47665
GS
3322 PerlIO_printf(PerlIO_stdout(),
3323 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3324#endif
3325#ifdef DJGPP
b0e47665
GS
3326 PerlIO_printf(PerlIO_stdout(),
3327 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3328 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3329#endif
79072805 3330#ifdef OS2
b0e47665
GS
3331 PerlIO_printf(PerlIO_stdout(),
3332 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3333 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3334#endif
79072805 3335#ifdef atarist
b0e47665
GS
3336 PerlIO_printf(PerlIO_stdout(),
3337 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3338#endif
a3f9223b 3339#ifdef __BEOS__
b0e47665
GS
3340 PerlIO_printf(PerlIO_stdout(),
3341 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3342#endif
1d84e8df 3343#ifdef MPE
b0e47665 3344 PerlIO_printf(PerlIO_stdout(),
e583a879 3345 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3346#endif
9d116dd7 3347#ifdef OEMVS
b0e47665
GS
3348 PerlIO_printf(PerlIO_stdout(),
3349 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3350#endif
495c5fdc 3351#ifdef __VOS__
b0e47665 3352 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3353 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3354#endif
092bebab 3355#ifdef __OPEN_VM
b0e47665
GS
3356 PerlIO_printf(PerlIO_stdout(),
3357 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3358#endif
a1a0e61e 3359#ifdef POSIX_BC
b0e47665
GS
3360 PerlIO_printf(PerlIO_stdout(),
3361 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3362#endif
61ae2fbf 3363#ifdef __MINT__
b0e47665
GS
3364 PerlIO_printf(PerlIO_stdout(),
3365 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3366#endif
f83d2536 3367#ifdef EPOC
b0e47665 3368 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3369 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3370#endif
e1caacb4 3371#ifdef UNDER_CE
b475b3e6
JH
3372 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3373 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3374 wce_hitreturn();
3375#endif
a0fd4948 3376#ifdef __SYMBIAN32__
27da23d5
JH
3377 PerlIO_printf(PerlIO_stdout(),
3378 "Symbian port by Nokia, 2004-2005\n");
3379#endif
baed7233
DL
3380#ifdef BINARY_BUILD_NOTICE
3381 BINARY_BUILD_NOTICE;
3382#endif
b0e47665
GS
3383 PerlIO_printf(PerlIO_stdout(),
3384 "\n\
79072805 3385Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3386GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3387Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3388this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3389Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3390 my_exit(0);
79072805 3391 case 'w':
b2e5e6ba 3392 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3393 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3394 }
599cee73
PM
3395 s++;
3396 return s;
3397 case 'W':
ac27b0f5 3398 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3399 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3400 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3401 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3402 s++;
3403 return s;
3404 case 'X':
ac27b0f5 3405 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3406 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3407 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3408 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3409 s++;
3410 return s;
a0d0e21e 3411 case '*':
79072805
LW
3412 case ' ':
3413 if (s[1] == '-') /* Additional switches on #! line. */
3414 return s+2;
3415 break;
a0d0e21e 3416 case '-':
79072805 3417 case 0:
51882d45 3418#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3419 case '\r':
3420#endif
79072805
LW
3421 case '\n':
3422 case '\t':
3423 break;
aa689395
PP
3424#ifdef ALTERNATE_SHEBANG
3425 case 'S': /* OS/2 needs -S on "extproc" line. */
3426 break;
3427#endif
a0d0e21e 3428 case 'P':
3280af22 3429 if (PL_preprocess)
a0d0e21e
LW
3430 return s+1;
3431 /* FALL THROUGH */
79072805 3432 default:
cea2e8a9 3433 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3434 }
bd61b366 3435 return NULL;
79072805
LW
3436}
3437
3438/* compliments of Tom Christiansen */
3439
3440/* unexec() can be found in the Gnu emacs distribution */
ee580363 3441/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3442
3443void
864dbfa3 3444Perl_my_unexec(pTHX)
79072805 3445{
b37c2d43 3446 PERL_UNUSED_CONTEXT;
79072805 3447#ifdef UNEXEC
b37c2d43
AL
3448 SV * prog = newSVpv(BIN_EXP, 0);
3449 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3450 int status = 1;
79072805
LW
3451 extern int etext;
3452
396482e1 3453 sv_catpvs(prog, "/perl");
396482e1 3454 sv_catpvs(file, ".perldump");
79072805 3455
ee580363
GS
3456 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3457 /* unexec prints msg to stderr in case of failure */
6ad3d225 3458 PerlProc_exit(status);
79072805 3459#else
a5f75d66
AD
3460# ifdef VMS
3461# include <lib$routines.h>
3462 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3463# elif defined(WIN32) || defined(__CYGWIN__)
3464 Perl_croak(aTHX_ "dump is not supported");
aa689395 3465# else
79072805 3466 ABORT(); /* for use with undump */
aa689395 3467# endif
a5f75d66 3468#endif
79072805
LW
3469}
3470
cb68f92d
GS
3471/* initialize curinterp */
3472STATIC void
cea2e8a9 3473S_init_interp(pTHX)
cb68f92d 3474{
97aff369 3475 dVAR;
acfe0abc
GS
3476#ifdef MULTIPLICITY
3477# define PERLVAR(var,type)
3478# define PERLVARA(var,n,type)
3479# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3480# define PERLVARI(var,type,init) aTHX->var = init;
3481# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3482# else
acfe0abc
GS
3483# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3484# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3485# endif
acfe0abc 3486# include "intrpvar.h"
b7f7fff6 3487# include "thrdvar.h"
acfe0abc
GS
3488# undef PERLVAR
3489# undef PERLVARA
3490# undef PERLVARI
3491# undef PERLVARIC
3492#else
3493# define PERLVAR(var,type)
3494# define PERLVARA(var,n,type)
3495# define PERLVARI(var,type,init) PL_##var = init;
3496# define PERLVARIC(var,type,init) PL_##var = init;
3497# include "intrpvar.h"
b7f7fff6 3498# include "thrdvar.h"
acfe0abc
GS
3499# undef PERLVAR
3500# undef PERLVARA
3501# undef PERLVARI
3502# undef PERLVARIC