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Re: [PATCH] sv.c: consting
[perl5.git] / perl.c
CommitLineData
a0d0e21e
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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
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15/* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
19 */
20
ae3f3efd
PS
21/* PSz 12 Nov 03
22 *
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
26 *
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
32 *
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
38 *
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
42 *
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
45 *
46 * References:
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
55 * CVE candidate:
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
011f1a1a
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85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
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95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
bf357333
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99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
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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> */
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124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
a687059c 128#ifdef DOSUID
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129# ifdef IAMSUID
130/* Drop scriptname */
131# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ validarg, fdscript, suidscript, linestr_sv, rsfp)
132# else
133/* Drop suidscript */
134# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ validarg, scriptname, fdscript, linestr_sv, rsfp)
135# endif
136#else
137# ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
138/* Drop everything. Heck, don't even try to call it */
139# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
140# else
141/* Drop almost everything */
142# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
143# endif
a687059c 144#endif
8d063cd8 145
d6f07c05
AL
146#define CALL_BODY_EVAL(myop) \
147 if (PL_op == (myop)) \
148 PL_op = Perl_pp_entereval(aTHX); \
149 if (PL_op) \
150 CALLRUNOPS(aTHX);
151
152#define CALL_BODY_SUB(myop) \
153 if (PL_op == (myop)) \
154 PL_op = Perl_pp_entersub(aTHX); \
155 if (PL_op) \
156 CALLRUNOPS(aTHX);
157
158#define CALL_LIST_BODY(cv) \
159 PUSHMARK(PL_stack_sp); \
160 call_sv((SV*)(cv), G_EVAL|G_DISCARD);
161
e6827a76 162static void
daa7d858 163S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 164{
27da23d5 165 dVAR;
e6827a76
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166 if (!PL_curinterp) {
167 PERL_SET_INTERP(my_perl);
3db8f154 168#if defined(USE_ITHREADS)
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169 INIT_THREADS;
170 ALLOC_THREAD_KEY;
171 PERL_SET_THX(my_perl);
172 OP_REFCNT_INIT;
71ad1b0c 173 HINTS_REFCNT_INIT;
e6827a76 174 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 175# endif
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176#ifdef PERL_IMPLICIT_CONTEXT
177 MUTEX_INIT(&PL_my_ctx_mutex);
178# endif
e6827a76 179 }
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180#if defined(USE_ITHREADS)
181 else
182#else
183 /* This always happens for non-ithreads */
184#endif
185 {
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186 PERL_SET_THX(my_perl);
187 }
188}
06d86050 189
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190
191/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
192
193void
194Perl_sys_init(int* argc, char*** argv)
195{
4fc0badb 196 dVAR;
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197
198 PERL_ARGS_ASSERT_SYS_INIT;
199
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200 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
201 PERL_UNUSED_ARG(argv);
202 PERL_SYS_INIT_BODY(argc, argv);
203}
204
205void
206Perl_sys_init3(int* argc, char*** argv, char*** env)
207{
4fc0badb 208 dVAR;
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209
210 PERL_ARGS_ASSERT_SYS_INIT3;
211
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212 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
213 PERL_UNUSED_ARG(argv);
214 PERL_UNUSED_ARG(env);
215 PERL_SYS_INIT3_BODY(argc, argv, env);
216}
217
218void
d0820ef1 219Perl_sys_term()
cbec8ebe 220{
4fc0badb 221 dVAR;
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222 if (!PL_veto_cleanup) {
223 PERL_SYS_TERM_BODY();
224 }
cbec8ebe
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225}
226
227
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228#ifdef PERL_IMPLICIT_SYS
229PerlInterpreter *
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230perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
231 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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232 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
233 struct IPerlDir* ipD, struct IPerlSock* ipS,
234 struct IPerlProc* ipP)
235{
236 PerlInterpreter *my_perl;
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237
238 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
239
9f653bb5 240 /* Newx() needs interpreter, so call malloc() instead */
32e30700 241 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 242 S_init_tls_and_interp(my_perl);
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243 Zero(my_perl, 1, PerlInterpreter);
244 PL_Mem = ipM;
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245 PL_MemShared = ipMS;
246 PL_MemParse = ipMP;
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247 PL_Env = ipE;
248 PL_StdIO = ipStd;
249 PL_LIO = ipLIO;
250 PL_Dir = ipD;
251 PL_Sock = ipS;
252 PL_Proc = ipP;
7cb608b5 253 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 254
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255 return my_perl;
256}
257#else
954c1994
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258
259/*
ccfc67b7
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260=head1 Embedding Functions
261
954c1994
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262=for apidoc perl_alloc
263
264Allocates a new Perl interpreter. See L<perlembed>.
265
266=cut
267*/
268
93a17b20 269PerlInterpreter *
cea2e8a9 270perl_alloc(void)
79072805 271{
cea2e8a9 272 PerlInterpreter *my_perl;
79072805 273
9f653bb5 274 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 275 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 276
e6827a76 277 S_init_tls_and_interp(my_perl);
7cb608b5 278#ifndef PERL_TRACK_MEMPOOL
07409e01 279 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
280#else
281 Zero(my_perl, 1, PerlInterpreter);
282 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
283 return my_perl;
284#endif
79072805 285}
32e30700 286#endif /* PERL_IMPLICIT_SYS */
79072805 287
954c1994
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288/*
289=for apidoc perl_construct
290
291Initializes a new Perl interpreter. See L<perlembed>.
292
293=cut
294*/
295
79072805 296void
0cb96387 297perl_construct(pTHXx)
79072805 298{
27da23d5 299 dVAR;
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300
301 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
302
8990e307 303#ifdef MULTIPLICITY
54aff467 304 init_interp();
ac27b0f5 305 PL_perl_destruct_level = 1;
54aff467 306#else
7918f24d 307 PERL_UNUSED_ARG(my_perl);
54aff467
GS
308 if (PL_perl_destruct_level > 0)
309 init_interp();
310#endif
34caed6d
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311 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
312
34caed6d
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313 /* set read-only and try to insure than we wont see REFCNT==0
314 very often */
315
316 SvREADONLY_on(&PL_sv_undef);
317 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
318
319 sv_setpv(&PL_sv_no,PL_No);
320 /* value lookup in void context - happens to have the side effect
a43d94f2
NC
321 of caching the numeric forms. However, as &PL_sv_no doesn't contain
322 a string that is a valid numer, we have to turn the public flags by
323 hand: */
34caed6d 324 SvNV(&PL_sv_no);
c1939273 325 SvIV(&PL_sv_no);
a43d94f2
NC
326 SvIOK_on(&PL_sv_no);
327 SvNOK_on(&PL_sv_no);
34caed6d
DM
328 SvREADONLY_on(&PL_sv_no);
329 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
330
331 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 332 SvNV(&PL_sv_yes);
c1939273 333 SvIV(&PL_sv_yes);
34caed6d
DM
334 SvREADONLY_on(&PL_sv_yes);
335 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
336
337 SvREADONLY_on(&PL_sv_placeholder);
338 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
339
340 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 341#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 342 PL_pidstatus = newHV();
ca0c25f6 343#endif
79072805 344
396482e1 345 PL_rs = newSVpvs("\n");
dc92893f 346
cea2e8a9 347 init_stacks();
79072805 348
748a9306 349 init_ids();
a5f75d66 350
312caa8e 351 JMPENV_BOOTSTRAP;
f86702cc
PP
352 STATUS_ALL_SUCCESS;
353
0672f40e 354 init_i18nl10n(1);
36477c24 355 SET_NUMERIC_STANDARD();
0b5b802d 356
ab821d7f 357#if defined(LOCAL_PATCH_COUNT)
3280af22 358 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
359#endif
360
52853b95
GS
361#ifdef HAVE_INTERP_INTERN
362 sys_intern_init();
363#endif
364
3a1ee7e8 365 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 366
3280af22
NIS
367 PL_fdpid = newAV(); /* for remembering popen pids by fd */
368 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 369 PL_errors = newSVpvs("");
48c6b404 370 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
371 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
372 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 373#ifdef USE_ITHREADS
402d2eb1
NC
374 /* First entry is a list of empty elements. It needs to be initialised
375 else all hell breaks loose in S_find_uninit_var(). */
376 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 377 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 378#endif
e5dd39fc 379#ifdef USE_REENTRANT_API
59bd0823 380 Perl_reentrant_init(aTHX);
e5dd39fc 381#endif
3d47000e
AB
382
383 /* Note that strtab is a rather special HV. Assumptions are made
384 about not iterating on it, and not adding tie magic to it.
385 It is properly deallocated in perl_destruct() */
386 PL_strtab = newHV();
387
3d47000e
AB
388 HvSHAREKEYS_off(PL_strtab); /* mandatory */
389 hv_ksplit(PL_strtab, 512);
390
0631ea03
AB
391#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
392 _dyld_lookup_and_bind
393 ("__environ", (unsigned long *) &environ_pointer, NULL);
394#endif /* environ */
395
2f42fcb0
JH
396#ifndef PERL_MICRO
397# ifdef USE_ENVIRON_ARRAY
0631ea03 398 PL_origenviron = environ;
2f42fcb0 399# endif
0631ea03
AB
400#endif
401
5311654c 402 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 403 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
404 * BeOS has those, but returns the wrong value.
405 * The HZ if not originally defined has been by now
406 * been defined as CLK_TCK, if available. */
dbc1d986 407#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
408 PL_clocktick = sysconf(_SC_CLK_TCK);
409 if (PL_clocktick <= 0)
410#endif
411 PL_clocktick = HZ;
412
081fc587
AB
413 PL_stashcache = newHV();
414
8cb289bd 415 PL_patchlevel = Perl_newSVpvf(aTHX_ "v%d.%d.%d", (int)PERL_REVISION,
e6830b13 416 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 417
27da23d5
JH
418#ifdef HAS_MMAP
419 if (!PL_mmap_page_size) {
420#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
421 {
422 SETERRNO(0, SS_NORMAL);
423# ifdef _SC_PAGESIZE
424 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
425# else
426 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
427# endif
428 if ((long) PL_mmap_page_size < 0) {
429 if (errno) {
44f8325f 430 SV * const error = ERRSV;
d4c19fe8 431 SvUPGRADE(error, SVt_PV);
0510663f 432 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
433 }
434 else
435 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
436 }
437 }
438#else
439# ifdef HAS_GETPAGESIZE
440 PL_mmap_page_size = getpagesize();
441# else
442# if defined(I_SYS_PARAM) && defined(PAGESIZE)
443 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
444# endif
445# endif
446#endif
447 if (PL_mmap_page_size <= 0)
448 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
449 (IV) PL_mmap_page_size);
450 }
451#endif /* HAS_MMAP */
452
453#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
454 PL_timesbase.tms_utime = 0;
455 PL_timesbase.tms_stime = 0;
456 PL_timesbase.tms_cutime = 0;
457 PL_timesbase.tms_cstime = 0;
458#endif
459
8990e307 460 ENTER;
79072805
LW
461}
462
954c1994 463/*
62375a60
NIS
464=for apidoc nothreadhook
465
466Stub that provides thread hook for perl_destruct when there are
467no threads.
468
469=cut
470*/
471
472int
4e9e3734 473Perl_nothreadhook(pTHX)
62375a60 474{
96a5add6 475 PERL_UNUSED_CONTEXT;
62375a60
NIS
476 return 0;
477}
478
41e4abd8
NC
479#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
480void
481Perl_dump_sv_child(pTHX_ SV *sv)
482{
483 ssize_t got;
bf357333
NC
484 const int sock = PL_dumper_fd;
485 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
486 union control_un control;
487 struct msghdr msg;
808ad2d0 488 struct iovec vec[2];
bf357333 489 struct cmsghdr *cmptr;
808ad2d0
NC
490 int returned_errno;
491 unsigned char buffer[256];
41e4abd8 492
7918f24d
NC
493 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
494
bf357333 495 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
496 return;
497
498 PerlIO_flush(Perl_debug_log);
499
bf357333
NC
500 /* All these shenanigans are to pass a file descriptor over to our child for
501 it to dump out to. We can't let it hold open the file descriptor when it
502 forks, as the file descriptor it will dump to can turn out to be one end
503 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 504 be open, the wait would be forever.) */
bf357333
NC
505
506 msg.msg_control = control.control;
507 msg.msg_controllen = sizeof(control.control);
508 /* We're a connected socket so we don't need a destination */
509 msg.msg_name = NULL;
510 msg.msg_namelen = 0;
511 msg.msg_iov = vec;
808ad2d0 512 msg.msg_iovlen = 1;
bf357333
NC
513
514 cmptr = CMSG_FIRSTHDR(&msg);
515 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
516 cmptr->cmsg_level = SOL_SOCKET;
517 cmptr->cmsg_type = SCM_RIGHTS;
518 *((int *)CMSG_DATA(cmptr)) = 1;
519
520 vec[0].iov_base = (void*)&sv;
521 vec[0].iov_len = sizeof(sv);
522 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
523
524 if(got < 0) {
bf357333 525 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
526 abort();
527 }
bf357333
NC
528 if(got < sizeof(sv)) {
529 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
530 abort();
531 }
532
808ad2d0
NC
533 /* Return protocol is
534 int: errno value
535 unsigned char: length of location string (0 for empty)
536 unsigned char*: string (not terminated)
537 */
538 vec[0].iov_base = (void*)&returned_errno;
539 vec[0].iov_len = sizeof(returned_errno);
540 vec[1].iov_base = buffer;
541 vec[1].iov_len = 1;
542
543 got = readv(sock, vec, 2);
41e4abd8
NC
544
545 if(got < 0) {
546 perror("Debug leaking scalars parent read failed");
808ad2d0 547 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
548 abort();
549 }
808ad2d0 550 if(got < sizeof(returned_errno) + 1) {
41e4abd8 551 perror("Debug leaking scalars parent short read");
808ad2d0 552 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
553 abort();
554 }
555
808ad2d0
NC
556 if (*buffer) {
557 got = read(sock, buffer + 1, *buffer);
558 if(got < 0) {
559 perror("Debug leaking scalars parent read 2 failed");
560 PerlIO_flush(PerlIO_stderr());
561 abort();
562 }
563
564 if(got < *buffer) {
565 perror("Debug leaking scalars parent short read 2");
566 PerlIO_flush(PerlIO_stderr());
567 abort();
568 }
569 }
570
571 if (returned_errno || *buffer) {
572 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
573 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
574 returned_errno, strerror(returned_errno));
41e4abd8
NC
575 }
576}
577#endif
578
62375a60 579/*
954c1994
GS
580=for apidoc perl_destruct
581
582Shuts down a Perl interpreter. See L<perlembed>.
583
584=cut
585*/
586
31d77e54 587int
0cb96387 588perl_destruct(pTHXx)
79072805 589{
27da23d5 590 dVAR;
be2ea8ed 591 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 592 HV *hv;
2aa47728 593#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
594 pid_t child;
595#endif
8990e307 596
7918f24d
NC
597 PERL_ARGS_ASSERT_PERL_DESTRUCT;
598#ifndef MULTIPLICITY
ed6c66dd 599 PERL_UNUSED_ARG(my_perl);
7918f24d 600#endif
9d4ba2ae 601
7766f137
GS
602 /* wait for all pseudo-forked children to finish */
603 PERL_WAIT_FOR_CHILDREN;
604
3280af22 605 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
606#ifdef DEBUGGING
607 {
9d4ba2ae
AL
608 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
609 if (s) {
e1ec3a88 610 const int i = atoi(s);
5f05dabc
PP
611 if (destruct_level < i)
612 destruct_level = i;
613 }
4633a7c4
LW
614 }
615#endif
616
27da23d5 617 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
618 dJMPENV;
619 int x = 0;
620
621 JMPENV_PUSH(x);
1b6737cc 622 PERL_UNUSED_VAR(x);
f3faeb53
AB
623 if (PL_endav && !PL_minus_c)
624 call_list(PL_scopestack_ix, PL_endav);
625 JMPENV_POP;
26f423df 626 }
f3faeb53 627 LEAVE;
a0d0e21e
LW
628 FREETMPS;
629
e00b64d4 630 /* Need to flush since END blocks can produce output */
f13a2bc0 631 my_fflush_all();
e00b64d4 632
62375a60
NIS
633 if (CALL_FPTR(PL_threadhook)(aTHX)) {
634 /* Threads hook has vetoed further cleanup */
c301d606 635 PL_veto_cleanup = TRUE;
37038d91 636 return STATUS_EXIT;
62375a60
NIS
637 }
638
2aa47728
NC
639#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
640 if (destruct_level != 0) {
641 /* Fork here to create a child. Our child's job is to preserve the
642 state of scalars prior to destruction, so that we can instruct it
643 to dump any scalars that we later find have leaked.
644 There's no subtlety in this code - it assumes POSIX, and it doesn't
645 fail gracefully */
646 int fd[2];
647
648 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
649 perror("Debug leaking scalars socketpair failed");
650 abort();
651 }
652
653 child = fork();
654 if(child == -1) {
655 perror("Debug leaking scalars fork failed");
656 abort();
657 }
658 if (!child) {
659 /* We are the child */
3125a5a4
NC
660 const int sock = fd[1];
661 const int debug_fd = PerlIO_fileno(Perl_debug_log);
662 int f;
808ad2d0
NC
663 const char *where;
664 /* Our success message is an integer 0, and a char 0 */
665 static const char success[sizeof(int) + 1];
3125a5a4 666
2aa47728 667 close(fd[0]);
2aa47728 668
3125a5a4
NC
669 /* We need to close all other file descriptors otherwise we end up
670 with interesting hangs, where the parent closes its end of a
671 pipe, and sits waiting for (another) child to terminate. Only
672 that child never terminates, because it never gets EOF, because
bf357333
NC
673 we also have the far end of the pipe open. We even need to
674 close the debugging fd, because sometimes it happens to be one
675 end of a pipe, and a process is waiting on the other end for
676 EOF. Normally it would be closed at some point earlier in
677 destruction, but if we happen to cause the pipe to remain open,
678 EOF never occurs, and we get an infinite hang. Hence all the
679 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
680
681 f = sysconf(_SC_OPEN_MAX);
682 if(f < 0) {
808ad2d0
NC
683 where = "sysconf failed";
684 goto abort;
3125a5a4
NC
685 }
686 while (f--) {
687 if (f == sock)
688 continue;
3125a5a4
NC
689 close(f);
690 }
691
2aa47728
NC
692 while (1) {
693 SV *target;
bf357333
NC
694 union control_un control;
695 struct msghdr msg;
696 struct iovec vec[1];
697 struct cmsghdr *cmptr;
698 ssize_t got;
699 int got_fd;
700
701 msg.msg_control = control.control;
702 msg.msg_controllen = sizeof(control.control);
703 /* We're a connected socket so we don't need a source */
704 msg.msg_name = NULL;
705 msg.msg_namelen = 0;
706 msg.msg_iov = vec;
707 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
708
709 vec[0].iov_base = (void*)&target;
710 vec[0].iov_len = sizeof(target);
711
712 got = recvmsg(sock, &msg, 0);
2aa47728
NC
713
714 if(got == 0)
715 break;
716 if(got < 0) {
808ad2d0
NC
717 where = "recv failed";
718 goto abort;
2aa47728
NC
719 }
720 if(got < sizeof(target)) {
808ad2d0
NC
721 where = "short recv";
722 goto abort;
2aa47728 723 }
bf357333 724
808ad2d0
NC
725 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
726 where = "no cmsg";
727 goto abort;
728 }
729 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
730 where = "wrong cmsg_len";
731 goto abort;
732 }
733 if(cmptr->cmsg_level != SOL_SOCKET) {
734 where = "wrong cmsg_level";
735 goto abort;
736 }
737 if(cmptr->cmsg_type != SCM_RIGHTS) {
738 where = "wrong cmsg_type";
739 goto abort;
740 }
bf357333
NC
741
742 got_fd = *(int*)CMSG_DATA(cmptr);
743 /* For our last little bit of trickery, put the file descriptor
744 back into Perl_debug_log, as if we never actually closed it
745 */
808ad2d0
NC
746 if(got_fd != debug_fd) {
747 if (dup2(got_fd, debug_fd) == -1) {
748 where = "dup2";
749 goto abort;
750 }
751 }
2aa47728 752 sv_dump(target);
bf357333 753
2aa47728
NC
754 PerlIO_flush(Perl_debug_log);
755
808ad2d0 756 got = write(sock, &success, sizeof(success));
2aa47728
NC
757
758 if(got < 0) {
808ad2d0
NC
759 where = "write failed";
760 goto abort;
2aa47728 761 }
808ad2d0
NC
762 if(got < sizeof(success)) {
763 where = "short write";
764 goto abort;
2aa47728
NC
765 }
766 }
767 _exit(0);
808ad2d0
NC
768 abort:
769 {
770 int send_errno = errno;
771 unsigned char length = (unsigned char) strlen(where);
772 struct iovec failure[3] = {
773 {(void*)&send_errno, sizeof(send_errno)},
774 {&length, 1},
775 {(void*)where, length}
776 };
777 int got = writev(sock, failure, 3);
778 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
779 in the parent if we try to read from the socketpair after the
780 child has exited, even if there was data to read.
781 So sleep a bit to give the parent a fighting chance of
782 reading the data. */
783 sleep(2);
784 _exit((got == -1) ? errno : 0);
785 }
bf357333 786 /* End of child. */
2aa47728 787 }
41e4abd8 788 PL_dumper_fd = fd[0];
2aa47728
NC
789 close(fd[1]);
790 }
791#endif
792
ff0cee69
PP
793 /* We must account for everything. */
794
795 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
796 /* Do this now, because destroying ops can cause new SVs to be generated
797 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
798 PL_curcop to point to a valid op from which the filename structure
799 member is copied. */
800 PL_curcop = &PL_compiling;
3280af22 801 if (PL_main_root) {
4e380990
DM
802 /* ensure comppad/curpad to refer to main's pad */
803 if (CvPADLIST(PL_main_cv)) {
804 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
805 }
3280af22 806 op_free(PL_main_root);
5f66b61c 807 PL_main_root = NULL;
a0d0e21e 808 }
5f66b61c 809 PL_main_start = NULL;
3280af22 810 SvREFCNT_dec(PL_main_cv);
601f1833 811 PL_main_cv = NULL;
24d3c518 812 PL_dirty = TRUE;
ff0cee69 813
13621cfb
NIS
814 /* Tell PerlIO we are about to tear things apart in case
815 we have layers which are using resources that should
816 be cleaned up now.
817 */
818
819 PerlIO_destruct(aTHX);
820
3280af22 821 if (PL_sv_objcount) {
a0d0e21e
LW
822 /*
823 * Try to destruct global references. We do this first so that the
824 * destructors and destructees still exist. Some sv's might remain.
825 * Non-referenced objects are on their own.
826 */
a0d0e21e 827 sv_clean_objs();
bf9cdc68 828 PL_sv_objcount = 0;
a0de6cf5 829 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 830 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
831 }
832
5cd24f17 833 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 834 SvREFCNT_dec(PL_warnhook);
a0714e2c 835 PL_warnhook = NULL;
3280af22 836 SvREFCNT_dec(PL_diehook);
a0714e2c 837 PL_diehook = NULL;
5cd24f17 838
4b556e6c 839 /* call exit list functions */
3280af22 840 while (PL_exitlistlen-- > 0)
acfe0abc 841 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 842
3280af22 843 Safefree(PL_exitlist);
4b556e6c 844
1c4916e5
CB
845 PL_exitlist = NULL;
846 PL_exitlistlen = 0;
847
551a8b83 848 /* jettison our possibly duplicated environment */
4b647fb0
DM
849 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
850 * so we certainly shouldn't free it here
851 */
2f42fcb0 852#ifndef PERL_MICRO
4b647fb0 853#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 854 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
855#ifdef USE_ITHREADS
856 /* only main thread can free environ[0] contents */
857 && PL_curinterp == aTHX
858#endif
859 )
860 {
551a8b83
JH
861 I32 i;
862
863 for (i = 0; environ[i]; i++)
4b420006 864 safesysfree(environ[i]);
0631ea03 865
4b420006
JH
866 /* Must use safesysfree() when working with environ. */
867 safesysfree(environ);
551a8b83
JH
868
869 environ = PL_origenviron;
870 }
871#endif
2f42fcb0 872#endif /* !PERL_MICRO */
551a8b83 873
30985c42
JH
874 if (destruct_level == 0) {
875
876 DEBUG_P(debprofdump());
877
878#if defined(PERLIO_LAYERS)
879 /* No more IO - including error messages ! */
880 PerlIO_cleanup(aTHX);
881#endif
882
883 CopFILE_free(&PL_compiling);
884 CopSTASH_free(&PL_compiling);
885
886 /* The exit() function will do everything that needs doing. */
887 return STATUS_EXIT;
888 }
889
804ffa60 890 /* reset so print() ends up where we expect */
a0714e2c 891 setdefout(NULL);
804ffa60 892
5f8cb046
DM
893#ifdef USE_ITHREADS
894 /* the syntax tree is shared between clones
895 * so op_free(PL_main_root) only ReREFCNT_dec's
896 * REGEXPs in the parent interpreter
897 * we need to manually ReREFCNT_dec for the clones
898 */
5f8cb046 899 SvREFCNT_dec(PL_regex_padav);
7d49f689 900 PL_regex_padav = NULL;
5f8cb046
DM
901 PL_regex_pad = NULL;
902#endif
903
081fc587
AB
904 SvREFCNT_dec((SV*) PL_stashcache);
905 PL_stashcache = NULL;
906
5f05dabc
PP
907 /* loosen bonds of global variables */
908
2f9285f8
DM
909 /* XXX can PL_parser still be non-null here? */
910 if(PL_parser && PL_parser->rsfp) {
911 (void)PerlIO_close(PL_parser->rsfp);
912 PL_parser->rsfp = NULL;
8ebc5c01
PP
913 }
914
84386e14
RGS
915 if (PL_minus_F) {
916 Safefree(PL_splitstr);
917 PL_splitstr = NULL;
918 }
919
8ebc5c01 920 /* switches */
3280af22
NIS
921 PL_minus_n = FALSE;
922 PL_minus_p = FALSE;
923 PL_minus_l = FALSE;
924 PL_minus_a = FALSE;
925 PL_minus_F = FALSE;
926 PL_doswitches = FALSE;
599cee73 927 PL_dowarn = G_WARN_OFF;
3280af22
NIS
928 PL_doextract = FALSE;
929 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
930 PL_unsafe = FALSE;
931
932 Safefree(PL_inplace);
bd61b366 933 PL_inplace = NULL;
a7cb1f99 934 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
935
936 if (PL_e_script) {
937 SvREFCNT_dec(PL_e_script);
a0714e2c 938 PL_e_script = NULL;
8ebc5c01
PP
939 }
940
bf9cdc68
RG
941 PL_perldb = 0;
942
8ebc5c01
PP
943 /* magical thingies */
944
7889fe52 945 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 946 PL_ofs_sv = NULL;
5f05dabc 947
7889fe52 948 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 949 PL_ors_sv = NULL;
8ebc5c01 950
3280af22 951 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 952 PL_rs = NULL;
dc92893f 953
d33b2eba 954 Safefree(PL_osname); /* $^O */
bd61b366 955 PL_osname = NULL;
5f05dabc 956
3280af22 957 SvREFCNT_dec(PL_statname);
a0714e2c
SS
958 PL_statname = NULL;
959 PL_statgv = NULL;
5f05dabc 960
8ebc5c01
PP
961 /* defgv, aka *_ should be taken care of elsewhere */
962
8ebc5c01 963 /* clean up after study() */
3280af22 964 SvREFCNT_dec(PL_lastscream);
a0714e2c 965 PL_lastscream = NULL;
3280af22
NIS
966 Safefree(PL_screamfirst);
967 PL_screamfirst = 0;
968 Safefree(PL_screamnext);
969 PL_screamnext = 0;
8ebc5c01 970
7d5ea4e7
GS
971 /* float buffer */
972 Safefree(PL_efloatbuf);
bd61b366 973 PL_efloatbuf = NULL;
7d5ea4e7
GS
974 PL_efloatsize = 0;
975
8ebc5c01 976 /* startup and shutdown function lists */
3280af22 977 SvREFCNT_dec(PL_beginav);
5a837c8f 978 SvREFCNT_dec(PL_beginav_save);
3280af22 979 SvREFCNT_dec(PL_endav);
7d30b5c4 980 SvREFCNT_dec(PL_checkav);
ece599bd 981 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
982 SvREFCNT_dec(PL_unitcheckav);
983 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 984 SvREFCNT_dec(PL_initav);
7d49f689
NC
985 PL_beginav = NULL;
986 PL_beginav_save = NULL;
987 PL_endav = NULL;
988 PL_checkav = NULL;
989 PL_checkav_save = NULL;
3c10abe3
AG
990 PL_unitcheckav = NULL;
991 PL_unitcheckav_save = NULL;
7d49f689 992 PL_initav = NULL;
5618dfe8 993
8ebc5c01 994 /* shortcuts just get cleared */
a0714e2c
SS
995 PL_envgv = NULL;
996 PL_incgv = NULL;
997 PL_hintgv = NULL;
998 PL_errgv = NULL;
999 PL_argvgv = NULL;
1000 PL_argvoutgv = NULL;
1001 PL_stdingv = NULL;
1002 PL_stderrgv = NULL;
1003 PL_last_in_gv = NULL;
1004 PL_replgv = NULL;
1005 PL_DBgv = NULL;
1006 PL_DBline = NULL;
1007 PL_DBsub = NULL;
1008 PL_DBsingle = NULL;
1009 PL_DBtrace = NULL;
1010 PL_DBsignal = NULL;
601f1833 1011 PL_DBcv = NULL;
7d49f689 1012 PL_dbargs = NULL;
5c284bb0 1013 PL_debstash = NULL;
8ebc5c01 1014
7a1c5554 1015 SvREFCNT_dec(PL_argvout_stack);
7d49f689 1016 PL_argvout_stack = NULL;
8ebc5c01 1017
5c831c24 1018 SvREFCNT_dec(PL_modglobal);
5c284bb0 1019 PL_modglobal = NULL;
5c831c24 1020 SvREFCNT_dec(PL_preambleav);
7d49f689 1021 PL_preambleav = NULL;
5c831c24 1022 SvREFCNT_dec(PL_subname);
a0714e2c 1023 PL_subname = NULL;
ca0c25f6 1024#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1025 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1026 PL_pidstatus = NULL;
ca0c25f6 1027#endif
5c831c24 1028 SvREFCNT_dec(PL_toptarget);
a0714e2c 1029 PL_toptarget = NULL;
5c831c24 1030 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1031 PL_bodytarget = NULL;
1032 PL_formtarget = NULL;
5c831c24 1033
d33b2eba 1034 /* free locale stuff */
b9582b6a 1035#ifdef USE_LOCALE_COLLATE
d33b2eba 1036 Safefree(PL_collation_name);
bd61b366 1037 PL_collation_name = NULL;
b9582b6a 1038#endif
d33b2eba 1039
b9582b6a 1040#ifdef USE_LOCALE_NUMERIC
d33b2eba 1041 Safefree(PL_numeric_name);
bd61b366 1042 PL_numeric_name = NULL;
a453c169 1043 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1044 PL_numeric_radix_sv = NULL;
b9582b6a 1045#endif
d33b2eba 1046
5c831c24
GS
1047 /* clear utf8 character classes */
1048 SvREFCNT_dec(PL_utf8_alnum);
1049 SvREFCNT_dec(PL_utf8_alnumc);
1050 SvREFCNT_dec(PL_utf8_ascii);
1051 SvREFCNT_dec(PL_utf8_alpha);
1052 SvREFCNT_dec(PL_utf8_space);
1053 SvREFCNT_dec(PL_utf8_cntrl);
1054 SvREFCNT_dec(PL_utf8_graph);
1055 SvREFCNT_dec(PL_utf8_digit);
1056 SvREFCNT_dec(PL_utf8_upper);
1057 SvREFCNT_dec(PL_utf8_lower);
1058 SvREFCNT_dec(PL_utf8_print);
1059 SvREFCNT_dec(PL_utf8_punct);
1060 SvREFCNT_dec(PL_utf8_xdigit);
1061 SvREFCNT_dec(PL_utf8_mark);
1062 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1063 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1064 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1065 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1066 SvREFCNT_dec(PL_utf8_idstart);
1067 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1068 PL_utf8_alnum = NULL;
1069 PL_utf8_alnumc = NULL;
1070 PL_utf8_ascii = NULL;
1071 PL_utf8_alpha = NULL;
1072 PL_utf8_space = NULL;
1073 PL_utf8_cntrl = NULL;
1074 PL_utf8_graph = NULL;
1075 PL_utf8_digit = NULL;
1076 PL_utf8_upper = NULL;
1077 PL_utf8_lower = NULL;
1078 PL_utf8_print = NULL;
1079 PL_utf8_punct = NULL;
1080 PL_utf8_xdigit = NULL;
1081 PL_utf8_mark = NULL;
1082 PL_utf8_toupper = NULL;
1083 PL_utf8_totitle = NULL;
1084 PL_utf8_tolower = NULL;
1085 PL_utf8_tofold = NULL;
1086 PL_utf8_idstart = NULL;
1087 PL_utf8_idcont = NULL;
5c831c24 1088
971a9dd3 1089 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1090 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1091 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1092 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1093 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1094 CopFILE_free(&PL_compiling);
1095 CopSTASH_free(&PL_compiling);
5c831c24 1096
a0d0e21e 1097 /* Prepare to destruct main symbol table. */
5f05dabc 1098
3280af22
NIS
1099 hv = PL_defstash;
1100 PL_defstash = 0;
a0d0e21e 1101 SvREFCNT_dec(hv);
5c831c24 1102 SvREFCNT_dec(PL_curstname);
a0714e2c 1103 PL_curstname = NULL;
a0d0e21e 1104
5a844595
GS
1105 /* clear queued errors */
1106 SvREFCNT_dec(PL_errors);
a0714e2c 1107 PL_errors = NULL;
5a844595 1108
dd69841b
BB
1109 SvREFCNT_dec(PL_isarev);
1110
a0d0e21e 1111 FREETMPS;
0453d815 1112 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1113 if (PL_scopestack_ix != 0)
9014280d 1114 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1115 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1116 (long)PL_scopestack_ix);
1117 if (PL_savestack_ix != 0)
9014280d 1118 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1119 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1120 (long)PL_savestack_ix);
1121 if (PL_tmps_floor != -1)
9014280d 1122 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1123 (long)PL_tmps_floor + 1);
a0d0e21e 1124 if (cxstack_ix != -1)
9014280d 1125 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1126 (long)cxstack_ix + 1);
a0d0e21e 1127 }
8990e307
LW
1128
1129 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1130 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1131 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1132
1133 /* the 2 is for PL_fdpid and PL_strtab */
1134 while (PL_sv_count > 2 && sv_clean_all())
1135 ;
1136
d33b2eba
GS
1137 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1138 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1139 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1140 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1141
d4777f27
GS
1142 AvREAL_off(PL_fdpid); /* no surviving entries */
1143 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1144 PL_fdpid = NULL;
d33b2eba 1145
6c644e78
GS
1146#ifdef HAVE_INTERP_INTERN
1147 sys_intern_clear();
1148#endif
1149
6e72f9df
PP
1150 /* Destruct the global string table. */
1151 {
1152 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1153 * so that sv_free() won't fail on them.
80459961
NC
1154 * Now that the global string table is using a single hunk of memory
1155 * for both HE and HEK, we either need to explicitly unshare it the
1156 * correct way, or actually free things here.
6e72f9df 1157 */
80459961
NC
1158 I32 riter = 0;
1159 const I32 max = HvMAX(PL_strtab);
c4420975 1160 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1161 HE *hent = array[0];
1162
6e72f9df 1163 for (;;) {
0453d815 1164 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1165 HE * const next = HeNEXT(hent);
9014280d 1166 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1167 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1168 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1169 Safefree(hent);
1170 hent = next;
6e72f9df
PP
1171 }
1172 if (!hent) {
1173 if (++riter > max)
1174 break;
1175 hent = array[riter];
1176 }
1177 }
80459961
NC
1178
1179 Safefree(array);
1180 HvARRAY(PL_strtab) = 0;
1181 HvTOTALKEYS(PL_strtab) = 0;
1182 HvFILL(PL_strtab) = 0;
6e72f9df 1183 }
3280af22 1184 SvREFCNT_dec(PL_strtab);
6e72f9df 1185
e652bb2f 1186#ifdef USE_ITHREADS
c21d1a0f 1187 /* free the pointer tables used for cloning */
a0739874 1188 ptr_table_free(PL_ptr_table);
bf9cdc68 1189 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1190#endif
a0739874 1191
d33b2eba
GS
1192 /* free special SVs */
1193
1194 SvREFCNT(&PL_sv_yes) = 0;
1195 sv_clear(&PL_sv_yes);
1196 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1197 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1198
1199 SvREFCNT(&PL_sv_no) = 0;
1200 sv_clear(&PL_sv_no);
1201 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1202 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1203
9f375a43
DM
1204 {
1205 int i;
1206 for (i=0; i<=2; i++) {
1207 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1208 sv_clear(PERL_DEBUG_PAD(i));
1209 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1210 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1211 }
1212 }
1213
0453d815 1214 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1215 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1216
eba0f806
DM
1217#ifdef DEBUG_LEAKING_SCALARS
1218 if (PL_sv_count != 0) {
1219 SV* sva;
1220 SV* sv;
1221 register SV* svend;
1222
1223 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1224 svend = &sva[SvREFCNT(sva)];
1225 for (sv = sva + 1; sv < svend; ++sv) {
1226 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1227 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1228 " flags=0x%"UVxf
fd0854ff
DM
1229 " refcnt=%"UVuf pTHX__FORMAT "\n"
1230 "\tallocated at %s:%d %s %s%s\n",
574b8821
NC
1231 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1232 pTHX__VALUE,
fd0854ff
DM
1233 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1234 sv->sv_debug_line,
1235 sv->sv_debug_inpad ? "for" : "by",
1236 sv->sv_debug_optype ?
1237 PL_op_name[sv->sv_debug_optype]: "(none)",
1238 sv->sv_debug_cloned ? " (cloned)" : ""
1239 );
2aa47728 1240#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1241 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1242#endif
eba0f806
DM
1243 }
1244 }
1245 }
1246 }
2aa47728
NC
1247#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1248 {
1249 int status;
1250 fd_set rset;
1251 /* Wait for up to 4 seconds for child to terminate.
1252 This seems to be the least effort way of timing out on reaping
1253 its exit status. */
1254 struct timeval waitfor = {4, 0};
41e4abd8 1255 int sock = PL_dumper_fd;
2aa47728
NC
1256
1257 shutdown(sock, 1);
1258 FD_ZERO(&rset);
1259 FD_SET(sock, &rset);
1260 select(sock + 1, &rset, NULL, NULL, &waitfor);
1261 waitpid(child, &status, WNOHANG);
1262 close(sock);
1263 }
1264#endif
eba0f806 1265#endif
77abb4c6
NC
1266#ifdef DEBUG_LEAKING_SCALARS_ABORT
1267 if (PL_sv_count)
1268 abort();
1269#endif
bf9cdc68 1270 PL_sv_count = 0;
eba0f806 1271
f1fac472
NC
1272#ifdef PERL_DEBUG_READONLY_OPS
1273 free(PL_slabs);
1274 PL_slabs = NULL;
1275 PL_slab_count = 0;
1276#endif
eba0f806 1277
56a2bab7 1278#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1279 /* No more IO - including error messages ! */
1280 PerlIO_cleanup(aTHX);
1281#endif
1282
9f4bd222 1283 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1284 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1285 for no arg - and will try and SvREFCNT_dec it.
1286 */
1287 SvREFCNT(&PL_sv_undef) = 0;
1288 SvREADONLY_off(&PL_sv_undef);
1289
3280af22 1290 Safefree(PL_origfilename);
bd61b366 1291 PL_origfilename = NULL;
3280af22 1292 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1293 PL_reg_start_tmp = (char**)NULL;
1294 PL_reg_start_tmpl = 0;
43c5f42d 1295 Safefree(PL_reg_curpm);
82ba1be6 1296 Safefree(PL_reg_poscache);
dd28f7bb 1297 free_tied_hv_pool();
3280af22 1298 Safefree(PL_op_mask);
cf36064f 1299 Safefree(PL_psig_ptr);
bf9cdc68 1300 PL_psig_ptr = (SV**)NULL;
cf36064f 1301 Safefree(PL_psig_name);
bf9cdc68 1302 PL_psig_name = (SV**)NULL;
2c2666fc 1303 Safefree(PL_bitcount);
bd61b366 1304 PL_bitcount = NULL;
ce08f86c 1305 Safefree(PL_psig_pend);
bf9cdc68 1306 PL_psig_pend = (int*)NULL;
a0714e2c 1307 PL_formfeed = NULL;
6e72f9df 1308 nuke_stacks();
bf9cdc68
RG
1309 PL_tainting = FALSE;
1310 PL_taint_warn = FALSE;
3280af22 1311 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1312 PL_debug = 0;
ac27b0f5 1313
a0d0e21e 1314 DEBUG_P(debprofdump());
d33b2eba 1315
e5dd39fc 1316#ifdef USE_REENTRANT_API
10bc17b6 1317 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1318#endif
1319
612f20c3
GS
1320 sv_free_arenas();
1321
5d9a96ca
DM
1322 while (PL_regmatch_slab) {
1323 regmatch_slab *s = PL_regmatch_slab;
1324 PL_regmatch_slab = PL_regmatch_slab->next;
1325 Safefree(s);
1326 }
1327
fc36a67e
PP
1328 /* As the absolutely last thing, free the non-arena SV for mess() */
1329
3280af22 1330 if (PL_mess_sv) {
f350b448
NC
1331 /* we know that type == SVt_PVMG */
1332
9c63abab 1333 /* it could have accumulated taint magic */
f350b448
NC
1334 MAGIC* mg;
1335 MAGIC* moremagic;
1336 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1337 moremagic = mg->mg_moremagic;
1338 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1339 && mg->mg_len >= 0)
1340 Safefree(mg->mg_ptr);
1341 Safefree(mg);
9c63abab 1342 }
f350b448 1343
fc36a67e 1344 /* we know that type >= SVt_PV */
8bd4d4c5 1345 SvPV_free(PL_mess_sv);
3280af22
NIS
1346 Safefree(SvANY(PL_mess_sv));
1347 Safefree(PL_mess_sv);
a0714e2c 1348 PL_mess_sv = NULL;
fc36a67e 1349 }
37038d91 1350 return STATUS_EXIT;
79072805
LW
1351}
1352
954c1994
GS
1353/*
1354=for apidoc perl_free
1355
1356Releases a Perl interpreter. See L<perlembed>.
1357
1358=cut
1359*/
1360
79072805 1361void
0cb96387 1362perl_free(pTHXx)
79072805 1363{
5174512c
NC
1364 dVAR;
1365
7918f24d
NC
1366 PERL_ARGS_ASSERT_PERL_FREE;
1367
c301d606
DM
1368 if (PL_veto_cleanup)
1369 return;
1370
7cb608b5 1371#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1372 {
1373 /*
1374 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1375 * value as we're probably hunting memory leaks then
1376 */
1377 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1378 if (!s || atoi(s) == 0) {
4fd0a9b8 1379 const U32 old_debug = PL_debug;
55ef9aae
MHM
1380 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1381 thread at thread exit. */
4fd0a9b8
NC
1382 if (DEBUG_m_TEST) {
1383 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1384 "free this thread's memory\n");
1385 PL_debug &= ~ DEBUG_m_FLAG;
1386 }
55ef9aae
MHM
1387 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1388 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1389 PL_debug = old_debug;
55ef9aae
MHM
1390 }
1391 }
7cb608b5
NC
1392#endif
1393
acfe0abc 1394#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1395# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1396 {
acfe0abc 1397# ifdef NETWARE
7af12a34 1398 void *host = nw_internal_host;
acfe0abc 1399# else
7af12a34 1400 void *host = w32_internal_host;
acfe0abc 1401# endif
7af12a34 1402 PerlMem_free(aTHXx);
acfe0abc 1403# ifdef NETWARE
7af12a34 1404 nw_delete_internal_host(host);
acfe0abc 1405# else
7af12a34 1406 win32_delete_internal_host(host);
acfe0abc 1407# endif
7af12a34 1408 }
1c0ca838
GS
1409# else
1410 PerlMem_free(aTHXx);
1411# endif
acfe0abc
GS
1412#else
1413 PerlMem_free(aTHXx);
76e3520e 1414#endif
79072805
LW
1415}
1416
b7f7fff6 1417#if defined(USE_ITHREADS)
aebd1ac7
GA
1418/* provide destructors to clean up the thread key when libperl is unloaded */
1419#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1420
826955bd 1421#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1422#pragma fini "perl_fini"
666ad1ec
GA
1423#elif defined(__sun) && !defined(__GNUC__)
1424#pragma fini (perl_fini)
aebd1ac7
GA
1425#endif
1426
0dbb1585
AL
1427static void
1428#if defined(__GNUC__)
1429__attribute__((destructor))
aebd1ac7 1430#endif
de009b76 1431perl_fini(void)
aebd1ac7 1432{
27da23d5 1433 dVAR;
c301d606 1434 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1435 FREE_THREAD_KEY;
1436}
1437
1438#endif /* WIN32 */
1439#endif /* THREADS */
1440
4b556e6c 1441void
864dbfa3 1442Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1443{
97aff369 1444 dVAR;
3280af22
NIS
1445 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1446 PL_exitlist[PL_exitlistlen].fn = fn;
1447 PL_exitlist[PL_exitlistlen].ptr = ptr;
1448 ++PL_exitlistlen;
4b556e6c
JD
1449}
1450
56cf6df8
RGS
1451#ifdef HAS_PROCSELFEXE
1452/* This is a function so that we don't hold on to MAXPATHLEN
1453 bytes of stack longer than necessary
1454 */
1455STATIC void
e1ec3a88 1456S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1457{
1458 char buf[MAXPATHLEN];
1459 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1460
1461 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1462 includes a spurious NUL which will cause $^X to fail in system
1463 or backticks (this will prevent extensions from being built and
1464 many tests from working). readlink is not meant to add a NUL.
1465 Normal readlink works fine.
1466 */
1467 if (len > 0 && buf[len-1] == '\0') {
1468 len--;
1469 }
1470
1471 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1472 returning the text "unknown" from the readlink rather than the path
1473 to the executable (or returning an error from the readlink). Any valid
1474 path has a '/' in it somewhere, so use that to validate the result.
1475 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1476 */
1477 if (len > 0 && memchr(buf, '/', len)) {
1478 sv_setpvn(sv,buf,len);
1479 }
1480 else {
1481 sv_setpv(sv,arg0);
1482 }
1483}
1484#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1485
1486STATIC void
1487S_set_caret_X(pTHX) {
97aff369 1488 dVAR;
fafc274c 1489 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1490 if (tmpgv) {
1491#ifdef HAS_PROCSELFEXE
1492 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1493#else
1494#ifdef OS2
c69033f2 1495 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1496#else
c69033f2 1497 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1498#endif
1499#endif
1500 }
1501}
1502
954c1994
GS
1503/*
1504=for apidoc perl_parse
1505
1506Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1507
1508=cut
1509*/
1510
79072805 1511int
0cb96387 1512perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1513{
27da23d5 1514 dVAR;
6224f72b 1515 I32 oldscope;
6224f72b 1516 int ret;
db36c5a1 1517 dJMPENV;
8d063cd8 1518
7918f24d
NC
1519 PERL_ARGS_ASSERT_PERL_PARSE;
1520#ifndef MULTIPLICITY
ed6c66dd 1521 PERL_UNUSED_ARG(my_perl);
7918f24d 1522#endif
9d4ba2ae 1523
ec2019ad
NC
1524#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW_AND_IAMSUID
1525 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now "
1526 "execute\nsetuid perl scripts securely.\n");
a687059c
LW
1527#endif
1528
b0891165
JH
1529#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1530 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1531 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1532 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1533 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1534 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1535 if (!PL_rehash_seed_set)
1536 PL_rehash_seed = get_hash_seed();
b0891165 1537 {
9d4ba2ae 1538 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1539
1b6737cc
AL
1540 if (s && (atoi(s) == 1))
1541 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1542 }
1543#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1544
3280af22 1545 PL_origargc = argc;
e2975953 1546 PL_origargv = argv;
a0d0e21e 1547
a2722ac9
GA
1548 if (PL_origalen != 0) {
1549 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1550 }
1551 else {
3cb9023d
JH
1552 /* Set PL_origalen be the sum of the contiguous argv[]
1553 * elements plus the size of the env in case that it is
e9137a8e 1554 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1555 * as the maximum modifiable length of $0. In the worst case
1556 * the area we are able to modify is limited to the size of
43c32782 1557 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1558 * --jhi */
e1ec3a88 1559 const char *s = NULL;
54bfe034 1560 int i;
1b6737cc 1561 const UV mask =
7d8e7db3 1562 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1563 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1564 const UV aligned =
43c32782
JH
1565 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1566
1567 /* See if all the arguments are contiguous in memory. Note
1568 * that 'contiguous' is a loose term because some platforms
1569 * align the argv[] and the envp[]. If the arguments look
1570 * like non-aligned, assume that they are 'strictly' or
1571 * 'traditionally' contiguous. If the arguments look like
1572 * aligned, we just check that they are within aligned
1573 * PTRSIZE bytes. As long as no system has something bizarre
1574 * like the argv[] interleaved with some other data, we are
1575 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1576 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1577 while (*s) s++;
1578 for (i = 1; i < PL_origargc; i++) {
1579 if ((PL_origargv[i] == s + 1
43c32782 1580#ifdef OS2
c8941eeb 1581 || PL_origargv[i] == s + 2
43c32782 1582#endif
c8941eeb
JH
1583 )
1584 ||
1585 (aligned &&
1586 (PL_origargv[i] > s &&
1587 PL_origargv[i] <=
1588 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1589 )
1590 {
1591 s = PL_origargv[i];
1592 while (*s) s++;
1593 }
1594 else
1595 break;
54bfe034 1596 }
54bfe034 1597 }
a4a109c2
JD
1598
1599#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1600 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1601 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1602 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1603 ||
1604 (aligned &&
1605 (PL_origenviron[0] > s &&
1606 PL_origenviron[0] <=
1607 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1608 )
1609 {
9d419b5f 1610#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1611 s = PL_origenviron[0];
1612 while (*s) s++;
1613#endif
bd61b366 1614 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1615 /* Force copy of environment. */
1616 for (i = 1; PL_origenviron[i]; i++) {
1617 if (PL_origenviron[i] == s + 1
1618 ||
1619 (aligned &&
1620 (PL_origenviron[i] > s &&
1621 PL_origenviron[i] <=
1622 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1623 )
1624 {
1625 s = PL_origenviron[i];
1626 while (*s) s++;
1627 }
1628 else
1629 break;
54bfe034 1630 }
43c32782 1631 }
54bfe034 1632 }
a4a109c2
JD
1633#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1634
2d2af554 1635 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1636 }
1637
3280af22 1638 if (PL_do_undump) {
a0d0e21e
LW
1639
1640 /* Come here if running an undumped a.out. */
1641
3280af22
NIS
1642 PL_origfilename = savepv(argv[0]);
1643 PL_do_undump = FALSE;
a0d0e21e 1644 cxstack_ix = -1; /* start label stack again */
748a9306 1645 init_ids();
b7975bdd
NC
1646 assert (!PL_tainted);
1647 TAINT;
1648 S_set_caret_X(aTHX);
1649 TAINT_NOT;
a0d0e21e
LW
1650 init_postdump_symbols(argc,argv,env);
1651 return 0;
1652 }
1653
3280af22 1654 if (PL_main_root) {
3280af22 1655 op_free(PL_main_root);
5f66b61c 1656 PL_main_root = NULL;
ff0cee69 1657 }
5f66b61c 1658 PL_main_start = NULL;
3280af22 1659 SvREFCNT_dec(PL_main_cv);
601f1833 1660 PL_main_cv = NULL;
79072805 1661
3280af22
NIS
1662 time(&PL_basetime);
1663 oldscope = PL_scopestack_ix;
599cee73 1664 PL_dowarn = G_WARN_OFF;
f86702cc 1665
14dd3ad8 1666 JMPENV_PUSH(ret);
6224f72b 1667 switch (ret) {
312caa8e 1668 case 0:
14dd3ad8 1669 parse_body(env,xsinit);
3c10abe3
AG
1670 if (PL_unitcheckav)
1671 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1672 if (PL_checkav)
1673 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1674 ret = 0;
1675 break;
6224f72b
GS
1676 case 1:
1677 STATUS_ALL_FAILURE;
1678 /* FALL THROUGH */
1679 case 2:
1680 /* my_exit() was called */
3280af22 1681 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1682 LEAVE;
1683 FREETMPS;
3280af22 1684 PL_curstash = PL_defstash;
3c10abe3
AG
1685 if (PL_unitcheckav)
1686 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1687 if (PL_checkav)
1688 call_list(oldscope, PL_checkav);
37038d91 1689 ret = STATUS_EXIT;
14dd3ad8 1690 break;
6224f72b 1691 case 3:
bf49b057 1692 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1693 ret = 1;
1694 break;
6224f72b 1695 }
14dd3ad8
GS
1696 JMPENV_POP;
1697 return ret;
1698}
1699
312caa8e 1700STATIC void *
14dd3ad8 1701S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1702{
27da23d5 1703 dVAR;
2f9285f8 1704 PerlIO *rsfp;
312caa8e 1705 int argc = PL_origargc;
8f42b153 1706 char **argv = PL_origargv;
e1ec3a88 1707 const char *scriptname = NULL;
312caa8e 1708 VOL bool dosearch = FALSE;
829372d3 1709#ifdef DOSUID
e1ec3a88 1710 const char *validarg = "";
829372d3 1711#endif
312caa8e 1712 register SV *sv;
c7030b81 1713 register char c;
bd61b366 1714 const char *cddir = NULL;
ab019eaa 1715#ifdef USE_SITECUSTOMIZE
20ef40cf 1716 bool minus_f = FALSE;
ab019eaa 1717#endif
009d90df 1718 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1719 bool add_read_e_script = FALSE;
009d90df
DM
1720
1721 SvGROW(linestr_sv, 80);
1722 sv_setpvn(linestr_sv,"",0);
312caa8e 1723
396482e1 1724 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1725 SAVEFREESV(sv);
1726 init_main_stash();
54310121 1727
c7030b81
NC
1728 {
1729 const char *s;
6224f72b
GS
1730 for (argc--,argv++; argc > 0; argc--,argv++) {
1731 if (argv[0][0] != '-' || !argv[0][1])
1732 break;
1733#ifdef DOSUID
1734 if (*validarg)
1735 validarg = " PHOOEY ";
1736 else
1737 validarg = argv[0];
ae3f3efd
PS
1738 /*
1739 * Can we rely on the kernel to start scripts with argv[1] set to
1740 * contain all #! line switches (the whole line)? (argv[0] is set to
1741 * the interpreter name, argv[2] to the script name; argv[3] and
1742 * above may contain other arguments.)
1743 */
13281fa4 1744#endif
6224f72b
GS
1745 s = argv[0]+1;
1746 reswitch:
47f56822 1747 switch ((c = *s)) {
729a02f2 1748 case 'C':
1d5472a9
GS
1749#ifndef PERL_STRICT_CR
1750 case '\r':
1751#endif
6224f72b
GS
1752 case ' ':
1753 case '0':
1754 case 'F':
1755 case 'a':
1756 case 'c':
1757 case 'd':
1758 case 'D':
1759 case 'h':
1760 case 'i':
1761 case 'l':
1762 case 'M':
1763 case 'm':
1764 case 'n':
1765 case 'p':
1766 case 's':
1767 case 'u':
1768 case 'U':
1769 case 'v':
599cee73
PM
1770 case 'W':
1771 case 'X':
6224f72b 1772 case 'w':
97bd5664 1773 if ((s = moreswitches(s)))
6224f72b
GS
1774 goto reswitch;
1775 break;
33b78306 1776
1dbad523 1777 case 't':
22f7c9c9 1778 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1779 if( !PL_tainting ) {
1780 PL_taint_warn = TRUE;
1781 PL_tainting = TRUE;
1782 }
1783 s++;
1784 goto reswitch;
6224f72b 1785 case 'T':
22f7c9c9 1786 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1787 PL_tainting = TRUE;
317ea90d 1788 PL_taint_warn = FALSE;
6224f72b
GS
1789 s++;
1790 goto reswitch;
f86702cc 1791
bc9b29db
RH
1792 case 'E':
1793 PL_minus_E = TRUE;
1794 /* FALL THROUGH */
6224f72b 1795 case 'e':
bf4acbe4
GS
1796#ifdef MACOS_TRADITIONAL
1797 /* ignore -e for Dev:Pseudo argument */
1798 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1799 break;
bf4acbe4 1800#endif
f20b2998 1801 forbid_setid('e', FALSE);
3280af22 1802 if (!PL_e_script) {
396482e1 1803 PL_e_script = newSVpvs("");
5486870f 1804 add_read_e_script = TRUE;
6224f72b
GS
1805 }
1806 if (*++s)
3280af22 1807 sv_catpv(PL_e_script, s);
6224f72b 1808 else if (argv[1]) {
3280af22 1809 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1810 argc--,argv++;
1811 }
1812 else
47f56822 1813 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1814 sv_catpvs(PL_e_script, "\n");
6224f72b 1815 break;
afe37c7d 1816
20ef40cf 1817 case 'f':
f5542d3a 1818#ifdef USE_SITECUSTOMIZE
20ef40cf 1819 minus_f = TRUE;
f5542d3a 1820#endif
20ef40cf
GA
1821 s++;
1822 goto reswitch;
1823
6224f72b 1824 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1825 forbid_setid('I', FALSE);
bd61b366 1826 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1827 argc--,argv++;
1828 }
6224f72b 1829 if (s && *s) {
0df16ed7 1830 STRLEN len = strlen(s);
aec46f14 1831 const char * const p = savepvn(s, len);
88fe16b2 1832 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1833 sv_catpvs(sv, "-I");
0df16ed7 1834 sv_catpvn(sv, p, len);
396482e1 1835 sv_catpvs(sv, " ");
6224f72b 1836 Safefree(p);
0df16ed7
GS
1837 }
1838 else
a67e862a 1839 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1840 break;
6224f72b 1841 case 'S':
f20b2998 1842 forbid_setid('S', FALSE);
6224f72b
GS
1843 dosearch = TRUE;
1844 s++;
1845 goto reswitch;
1846 case 'V':
7edfd0ef
NC
1847 {
1848 SV *opts_prog;
1849
29a861e7 1850 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
7edfd0ef 1851 if (*++s != ':') {
389d73ad
NC
1852 /* Can't do newSVpvs() as that would involve pre-processor
1853 condititionals inside a macro expansion. */
1854 opts_prog = Perl_newSVpv(aTHX_ "$_ = join ' ', sort qw("
6224f72b 1855# ifdef DEBUGGING
e2e4dbf1 1856 " DEBUGGING"
6224f72b 1857# endif
3bcf5ed8
SP
1858# ifdef NO_MATHOMS
1859 " NO_MATHOMS"
1860# endif
85e1fcb9 1861# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1862 " PERL_DONT_CREATE_GVSV"
85e1fcb9 1863# endif
85e1fcb9 1864# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1865 " PERL_MALLOC_WRAP"
85e1fcb9 1866# endif
4724db38
NC
1867# ifdef PERL_MEM_LOG
1868 " PERL_MEM_LOG"
1869# endif
1870# ifdef PERL_MEM_LOG_ENV
1871 " PERL_MEM_LOG_ENV"
1872# endif
1873# ifdef PERL_MEM_LOG_ENV_FD
1874 " PERL_MEM_LOG_ENV_FD"
1875# endif
1876# ifdef PERL_MEM_LOG_STDERR
1877 " PERL_MEM_LOG_STDERR"
1878# endif
1879# ifdef PERL_MEM_LOG_TIMESTAMP
1880 " PERL_MEM_LOG_TIMESTAMP"
1881# endif
417cd4a8
SP
1882# ifdef PERL_USE_SAFE_PUTENV
1883 " PERL_USE_SAFE_PUTENV"
1884# endif
20ef40cf 1885# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1886 " USE_SITECUSTOMIZE"
20ef40cf 1887# endif
389d73ad 1888 , 0);
efcaa95b 1889
b75885fd 1890 sv_catpv(opts_prog, PL_bincompat_options);
389d73ad
NC
1891 /* Terminate the qw(, and then wrap at 76 columns. */
1892 sv_catpvs(opts_prog, "); s/(?=.{53})(.{1,53}) /$1\\n /mg;print Config::myconfig(),");
1893#ifdef VMS
1894 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n");
1895#else
1896 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n");
1897#endif
efcaa95b 1898
389d73ad 1899 sv_catpvs(opts_prog," Compile-time options: $_\\n\",");
b363f7ed 1900
6224f72b 1901#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1902 if (LOCAL_PATCH_COUNT > 0) {
1903 int i;
396482e1 1904 sv_catpvs(opts_prog,
7edfd0ef
NC
1905 "\" Locally applied patches:\\n\",");
1906 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1907 if (PL_localpatches[i])
1908 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1909 0, PL_localpatches[i], 0);
1910 }
6224f72b 1911 }
6224f72b 1912#endif
7edfd0ef 1913 Perl_sv_catpvf(aTHX_ opts_prog,
758ce194 1914 "\" Built under %s\\n",OSNAME);
6224f72b
GS
1915#ifdef __DATE__
1916# ifdef __TIME__
895aa832
NC
1917 sv_catpvs(opts_prog,
1918 " Compiled at " __DATE__ " " __TIME__ "\\n\"");
6224f72b 1919# else
895aa832 1920 sv_catpvs(opts_prog, " Compiled on " __DATE__ "\\n\"");
6224f72b
GS
1921# endif
1922#endif
396482e1 1923 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1924 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1925 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1926#ifdef __CYGWIN__
396482e1 1927 sv_catpvs(opts_prog,
7edfd0ef 1928 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1929#endif
396482e1 1930 sv_catpvs(opts_prog,
7edfd0ef
NC
1931 "print \" \\%ENV:\\n @env\\n\" if @env;"
1932 "print \" \\@INC:\\n @INC\\n\";");
1933 }
1934 else {
1935 ++s;
1936 opts_prog = Perl_newSVpvf(aTHX_
1937 "Config::config_vars(qw%c%s%c)",
1938 0, s, 0);
1939 s += strlen(s);
1940 }
1941 av_push(PL_preambleav, opts_prog);
1942 /* don't look for script or read stdin */
1943 scriptname = BIT_BUCKET;
1944 goto reswitch;
6224f72b 1945 }
6224f72b 1946 case 'x':
3280af22 1947 PL_doextract = TRUE;
6224f72b 1948 s++;
304334da 1949 if (*s)
f4c556ac 1950 cddir = s;
6224f72b
GS
1951 break;
1952 case 0:
1953 break;
1954 case '-':
1955 if (!*++s || isSPACE(*s)) {
1956 argc--,argv++;
1957 goto switch_end;
1958 }
1959 /* catch use of gnu style long options */
1960 if (strEQ(s, "version")) {
dd374669 1961 s = (char *)"v";
6224f72b
GS
1962 goto reswitch;
1963 }
1964 if (strEQ(s, "help")) {
dd374669 1965 s = (char *)"h";
6224f72b
GS
1966 goto reswitch;
1967 }
1968 s--;
1969 /* FALL THROUGH */
1970 default:
cea2e8a9 1971 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1972 }
1973 }
c7030b81
NC
1974 }
1975
6224f72b 1976 switch_end:
54310121 1977
c7030b81
NC
1978 {
1979 char *s;
1980
f675dbe5
CB
1981 if (
1982#ifndef SECURE_INTERNAL_GETENV
1983 !PL_tainting &&
1984#endif
cf756827 1985 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1986 {
e1ec3a88 1987 const char *popt = s;
74288ac8
GS
1988 while (isSPACE(*s))
1989 s++;
317ea90d 1990 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1991 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1992 PL_tainting = TRUE;
317ea90d
MS
1993 PL_taint_warn = FALSE;
1994 }
74288ac8 1995 else {
bd61b366 1996 char *popt_copy = NULL;
74288ac8 1997 while (s && *s) {
4ea8f8fb 1998 char *d;
74288ac8
GS
1999 while (isSPACE(*s))
2000 s++;
2001 if (*s == '-') {
2002 s++;
2003 if (isSPACE(*s))
2004 continue;
2005 }
4ea8f8fb 2006 d = s;
74288ac8
GS
2007 if (!*s)
2008 break;
f0d36289 2009 if (!strchr("CDIMUdmtw", *s))
cea2e8a9 2010 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2011 while (++s && *s) {
2012 if (isSPACE(*s)) {
cf756827
GS
2013 if (!popt_copy) {
2014 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
2015 s = popt_copy + (s - popt);
2016 d = popt_copy + (d - popt);
2017 }
4ea8f8fb
MS
2018 *s++ = '\0';
2019 break;
2020 }
2021 }
1c4db469 2022 if (*d == 't') {
317ea90d
MS
2023 if( !PL_tainting ) {
2024 PL_taint_warn = TRUE;
2025 PL_tainting = TRUE;
2026 }
1c4db469 2027 } else {
97bd5664 2028 moreswitches(d);
1c4db469 2029 }
6224f72b 2030 }
6224f72b
GS
2031 }
2032 }
c7030b81 2033 }
a0d0e21e 2034
20ef40cf
GA
2035#ifdef USE_SITECUSTOMIZE
2036 if (!minus_f) {
29a861e7
NC
2037 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2038 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
20ef40cf
GA
2039 }
2040#endif
2041
6224f72b
GS
2042 if (!scriptname)
2043 scriptname = argv[0];
3280af22 2044 if (PL_e_script) {
6224f72b
GS
2045 argc++,argv--;
2046 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2047 }
bd61b366 2048 else if (scriptname == NULL) {
6224f72b
GS
2049#ifdef MSDOS
2050 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2051 moreswitches("h");
6224f72b
GS
2052#endif
2053 scriptname = "-";
2054 }
2055
b7975bdd
NC
2056 /* Set $^X early so that it can be used for relocatable paths in @INC */
2057 assert (!PL_tainted);
2058 TAINT;
2059 S_set_caret_X(aTHX);
2060 TAINT_NOT;
6224f72b
GS
2061 init_perllib();
2062
a52eba0e 2063 {
f20b2998 2064 bool suidscript = FALSE;
829372d3
NC
2065
2066#ifdef DOSUID
2067 const int fdscript =
2068#endif
2069 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2070
2f9285f8
DM
2071 validate_suid(validarg, scriptname, fdscript, suidscript,
2072 linestr_sv, rsfp);
6224f72b 2073
64ca3a65 2074#ifndef PERL_MICRO
a52eba0e
NC
2075# if defined(SIGCHLD) || defined(SIGCLD)
2076 {
2077# ifndef SIGCHLD
2078# define SIGCHLD SIGCLD
2079# endif
2080 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2081 if (sigstate == (Sighandler_t) SIG_IGN) {
2082 if (ckWARN(WARN_SIGNAL))
2083 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2084 "Can't ignore signal CHLD, forcing to default");
2085 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2086 }
0b5b802d 2087 }
a52eba0e 2088# endif
64ca3a65 2089#endif
0b5b802d 2090
a52eba0e 2091 if (PL_doextract
bf4acbe4 2092#ifdef MACOS_TRADITIONAL
a52eba0e 2093 || gMacPerl_AlwaysExtract
bf4acbe4 2094#endif
a52eba0e 2095 ) {
faef540c 2096
f20b2998 2097 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2098 setuid scripts. */
2099 forbid_setid('x', suidscript);
f20b2998 2100 /* Hence you can't get here if suidscript is true */
faef540c 2101
2f9285f8 2102 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2103 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2104 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2105 }
f4c556ac 2106 }
6224f72b 2107
b9f83d2f 2108 PL_main_cv = PL_compcv = (CV*)newSV_type(SVt_PVCV);
3280af22
NIS
2109 CvUNIQUE_on(PL_compcv);
2110
dd2155a4 2111 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2112
dd69841b
BB
2113 PL_isarev = newHV();
2114
0c4f7ff0 2115 boot_core_PerlIO();
6224f72b 2116 boot_core_UNIVERSAL();
09bef843 2117 boot_core_xsutils();
e1a479c5 2118 boot_core_mro();
6224f72b
GS
2119
2120 if (xsinit)
acfe0abc 2121 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2122#ifndef PERL_MICRO
d0d72822 2123#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2124 init_os_extras();
6224f72b 2125#endif
64ca3a65 2126#endif
6224f72b 2127
29209bc5 2128#ifdef USE_SOCKS
1b9c9cf5
DH
2129# ifdef HAS_SOCKS5_INIT
2130 socks5_init(argv[0]);
2131# else
29209bc5 2132 SOCKSinit(argv[0]);
1b9c9cf5 2133# endif
ac27b0f5 2134#endif
29209bc5 2135
6224f72b
GS
2136 init_predump_symbols();
2137 /* init_postdump_symbols not currently designed to be called */
2138 /* more than once (ENV isn't cleared first, for example) */
2139 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2140 if (!PL_do_undump)
6224f72b
GS
2141 init_postdump_symbols(argc,argv,env);
2142
27da23d5
JH
2143 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2144 * or explicitly in some platforms.
085a54d9 2145 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2146 * look like the user wants to use UTF-8. */
a0fd4948 2147#if defined(__SYMBIAN32__)
27da23d5
JH
2148 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2149#endif
06e66572
JH
2150 if (PL_unicode) {
2151 /* Requires init_predump_symbols(). */
a05d7ebb 2152 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2153 IO* io;
2154 PerlIO* fp;
2155 SV* sv;
2156
a05d7ebb 2157 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2158 * and the default open disciplines. */
a05d7ebb
JH
2159 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2160 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2161 (fp = IoIFP(io)))
2162 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2163 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2164 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2165 (fp = IoOFP(io)))
2166 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2167 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2168 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2169 (fp = IoOFP(io)))
2170 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2171 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2172 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2173 SVt_PV)))) {
a05d7ebb
JH
2174 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2175 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2176 if (in) {
2177 if (out)
2178 sv_setpvn(sv, ":utf8\0:utf8", 11);
2179 else
2180 sv_setpvn(sv, ":utf8\0", 6);
2181 }
2182 else if (out)
2183 sv_setpvn(sv, "\0:utf8", 6);
2184 SvSETMAGIC(sv);
2185 }
b310b053
JH
2186 }
2187 }
2188
c7030b81
NC
2189 {
2190 const char *s;
4ffa73a3
JH
2191 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2192 if (strEQ(s, "unsafe"))
2193 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2194 else if (strEQ(s, "safe"))
2195 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2196 else
2197 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2198 }
c7030b81 2199 }
4ffa73a3 2200
81d86705 2201#ifdef PERL_MAD
c7030b81
NC
2202 {
2203 const char *s;
81d86705
NC
2204 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2205 PL_madskills = 1;
2206 PL_minus_c = 1;
2207 if (!s || !s[0])
2208 PL_xmlfp = PerlIO_stdout();
2209 else {
2210 PL_xmlfp = PerlIO_open(s, "w");
2211 if (!PL_xmlfp)
2212 Perl_croak(aTHX_ "Can't open %s", s);
2213 }
1a9a51d4 2214 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2215 }
c7030b81
NC
2216 }
2217
2218 {
2219 const char *s;
81d86705
NC
2220 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2221 PL_madskills = atoi(s);
1a9a51d4 2222 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2223 }
c7030b81 2224 }
81d86705
NC
2225#endif
2226
5486870f 2227 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2228 PL_subname = newSVpvs("main");
6224f72b 2229
5486870f
DM
2230 if (add_read_e_script)
2231 filter_add(read_e_script, NULL);
2232
6224f72b
GS
2233 /* now parse the script */
2234
93189314 2235 SETERRNO(0,SS_NORMAL);
bf4acbe4 2236#ifdef MACOS_TRADITIONAL
13765c85 2237 if (gMacPerl_SyntaxError = (yyparse() || PL_parser->error_count)) {
bf4acbe4
GS
2238 if (PL_minus_c)
2239 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2240 else {
2241 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2242 MacPerl_MPWFileName(PL_origfilename));
2243 }
2244 }
2245#else
13765c85 2246 if (yyparse() || PL_parser->error_count) {
3280af22 2247 if (PL_minus_c)
cea2e8a9 2248 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2249 else {
cea2e8a9 2250 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2251 PL_origfilename);
6224f72b
GS
2252 }
2253 }
bf4acbe4 2254#endif
57843af0 2255 CopLINE_set(PL_curcop, 0);
3280af22 2256 PL_curstash = PL_defstash;
3280af22
NIS
2257 if (PL_e_script) {
2258 SvREFCNT_dec(PL_e_script);
a0714e2c 2259 PL_e_script = NULL;
6224f72b
GS
2260 }
2261
3280af22 2262 if (PL_do_undump)
6224f72b
GS
2263 my_unexec();
2264
57843af0
GS
2265 if (isWARN_ONCE) {
2266 SAVECOPFILE(PL_curcop);
2267 SAVECOPLINE(PL_curcop);
3280af22 2268 gv_check(PL_defstash);
57843af0 2269 }
6224f72b
GS
2270
2271 LEAVE;
2272 FREETMPS;
2273
2274#ifdef MYMALLOC
f6a607bc
RGS
2275 {
2276 const char *s;
6224f72b
GS
2277 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2278 dump_mstats("after compilation:");
f6a607bc 2279 }
6224f72b
GS
2280#endif
2281
2282 ENTER;
3280af22 2283 PL_restartop = 0;
312caa8e 2284 return NULL;
6224f72b
GS
2285}
2286
954c1994
GS
2287/*
2288=for apidoc perl_run
2289
2290Tells a Perl interpreter to run. See L<perlembed>.
2291
2292=cut
2293*/
2294
6224f72b 2295int
0cb96387 2296perl_run(pTHXx)
6224f72b 2297{
97aff369 2298 dVAR;
6224f72b 2299 I32 oldscope;
14dd3ad8 2300 int ret = 0;
db36c5a1 2301 dJMPENV;
6224f72b 2302
7918f24d
NC
2303 PERL_ARGS_ASSERT_PERL_RUN;
2304#ifndef MULTIPLICITY
ed6c66dd 2305 PERL_UNUSED_ARG(my_perl);
7918f24d 2306#endif
9d4ba2ae 2307
3280af22 2308 oldscope = PL_scopestack_ix;
96e176bf
CL
2309#ifdef VMS
2310 VMSISH_HUSHED = 0;
2311#endif
6224f72b 2312
14dd3ad8 2313 JMPENV_PUSH(ret);
6224f72b
GS
2314 switch (ret) {
2315 case 1:
2316 cxstack_ix = -1; /* start context stack again */
312caa8e 2317 goto redo_body;
14dd3ad8 2318 case 0: /* normal completion */
14dd3ad8
GS
2319 redo_body:
2320 run_body(oldscope);
14dd3ad8
GS
2321 /* FALL THROUGH */
2322 case 2: /* my_exit() */
3280af22 2323 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2324 LEAVE;
2325 FREETMPS;
3280af22 2326 PL_curstash = PL_defstash;
3a1ee7e8 2327 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2328 PL_endav && !PL_minus_c)
2329 call_list(oldscope, PL_endav);
6224f72b
GS
2330#ifdef MYMALLOC
2331 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2332 dump_mstats("after execution: ");
2333#endif
37038d91 2334 ret = STATUS_EXIT;
14dd3ad8 2335 break;
6224f72b 2336 case 3:
312caa8e
CS
2337 if (PL_restartop) {
2338 POPSTACK_TO(PL_mainstack);
2339 goto redo_body;
6224f72b 2340 }
bf49b057 2341 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2342 FREETMPS;
14dd3ad8
GS
2343 ret = 1;
2344 break;
6224f72b
GS
2345 }
2346
14dd3ad8
GS
2347 JMPENV_POP;
2348 return ret;
312caa8e
CS
2349}
2350
dd374669 2351STATIC void
14dd3ad8
GS
2352S_run_body(pTHX_ I32 oldscope)
2353{
97aff369 2354 dVAR;
6224f72b 2355 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2356 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2357
3280af22 2358 if (!PL_restartop) {
81d86705
NC
2359#ifdef PERL_MAD
2360 if (PL_xmlfp) {
2361 xmldump_all();
2362 exit(0); /* less likely to core dump than my_exit(0) */
2363 }
2364#endif
6224f72b 2365 DEBUG_x(dump_all());
cf2782cd 2366#ifdef DEBUGGING
ecae49c0
NC
2367 if (!DEBUG_q_TEST)
2368 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2369#endif
6224f72b 2370
3280af22 2371 if (PL_minus_c) {
bf4acbe4 2372#ifdef MACOS_TRADITIONAL
e69a2255
JH
2373 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2374 (gMacPerl_ErrorFormat ? "# " : ""),
2375 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2376#else
bf49b057 2377 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2378#endif
6224f72b
GS
2379 my_exit(0);
2380 }
3280af22 2381 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2382 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2383 if (PL_initav)
2384 call_list(oldscope, PL_initav);
f1fac472
NC
2385#ifdef PERL_DEBUG_READONLY_OPS
2386 Perl_pending_Slabs_to_ro(aTHX);
2387#endif
6224f72b
GS
2388 }
2389
2390 /* do it */
2391
3280af22 2392 if (PL_restartop) {
533c011a 2393 PL_op = PL_restartop;
3280af22 2394 PL_restartop = 0;
cea2e8a9 2395 CALLRUNOPS(aTHX);
6224f72b 2396 }
3280af22
NIS
2397 else if (PL_main_start) {
2398 CvDEPTH(PL_main_cv) = 1;
533c011a 2399 PL_op = PL_main_start;
cea2e8a9 2400 CALLRUNOPS(aTHX);
6224f72b 2401 }
f6b3007c
JH
2402 my_exit(0);
2403 /* NOTREACHED */
6224f72b
GS
2404}
2405
954c1994 2406/*
ccfc67b7
JH
2407=head1 SV Manipulation Functions
2408
954c1994
GS
2409=for apidoc p||get_sv
2410
2411Returns the SV of the specified Perl scalar. If C<create> is set and the
2412Perl variable does not exist then it will be created. If C<create> is not
2413set and the variable does not exist then NULL is returned.
2414
2415=cut
2416*/
2417
6224f72b 2418SV*
864dbfa3 2419Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2420{
2421 GV *gv;
7918f24d
NC
2422
2423 PERL_ARGS_ASSERT_GET_SV;
2424
6224f72b
GS
2425 gv = gv_fetchpv(name, create, SVt_PV);
2426 if (gv)
2427 return GvSV(gv);
a0714e2c 2428 return NULL;
6224f72b
GS
2429}
2430
954c1994 2431/*
ccfc67b7
JH
2432=head1 Array Manipulation Functions
2433
954c1994
GS
2434=for apidoc p||get_av
2435
2436Returns the AV of the specified Perl array. If C<create> is set and the
2437Perl variable does not exist then it will be created. If C<create> is not
2438set and the variable does not exist then NULL is returned.
2439
2440=cut
2441*/
2442
6224f72b 2443AV*
864dbfa3 2444Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2445{
c4420975 2446 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
7918f24d
NC
2447
2448 PERL_ARGS_ASSERT_GET_AV;
2449
6224f72b
GS
2450 if (create)
2451 return GvAVn(gv);
2452 if (gv)
2453 return GvAV(gv);
7d49f689 2454 return NULL;
6224f72b
GS
2455}
2456
954c1994 2457/*
ccfc67b7
JH
2458=head1 Hash Manipulation Functions
2459
954c1994
GS
2460=for apidoc p||get_hv
2461
2462Returns the HV of the specified Perl hash. If C<create> is set and the
2463Perl variable does not exist then it will be created. If C<create> is not
2464set and the variable does not exist then NULL is returned.
2465
2466=cut
2467*/
2468
6224f72b 2469HV*
864dbfa3 2470Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2471{
890ce7af 2472 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
7918f24d
NC
2473
2474 PERL_ARGS_ASSERT_GET_HV;
2475
a0d0e21e
LW
2476 if (create)
2477 return GvHVn(gv);
2478 if (gv)
2479 return GvHV(gv);
5c284bb0 2480 return NULL;
a0d0e21e
LW
2481}
2482
954c1994 2483/*
ccfc67b7
JH
2484=head1 CV Manipulation Functions
2485
780a5241
NC
2486=for apidoc p||get_cvn_flags
2487
2488Returns the CV of the specified Perl subroutine. C<flags> are passed to
2489C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2490exist then it will be declared (which has the same effect as saying
2491C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2492then NULL is returned.
2493
954c1994
GS
2494=for apidoc p||get_cv
2495
780a5241 2496Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2497
2498=cut
2499*/
2500
a0d0e21e 2501CV*
780a5241 2502Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2503{
780a5241 2504 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2505 /* XXX this is probably not what they think they're getting.
2506 * It has the same effect as "sub name;", i.e. just a forward
2507 * declaration! */
7918f24d
NC
2508
2509 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2510
780a5241 2511 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2512 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2513 return newSUB(start_subparse(FALSE, 0),
780a5241 2514 newSVOP(OP_CONST, 0, sv),
5f66b61c 2515 NULL, NULL);
780a5241 2516 }
a0d0e21e 2517 if (gv)
8ebc5c01 2518 return GvCVu(gv);
601f1833 2519 return NULL;
a0d0e21e
LW
2520}
2521
780a5241
NC
2522CV*
2523Perl_get_cv(pTHX_ const char *name, I32 flags)
2524{
7918f24d
NC
2525 PERL_ARGS_ASSERT_GET_CV;
2526
780a5241
NC
2527 return get_cvn_flags(name, strlen(name), flags);
2528}
2529
79072805
LW
2530/* Be sure to refetch the stack pointer after calling these routines. */
2531
954c1994 2532/*
ccfc67b7
JH
2533
2534=head1 Callback Functions
2535
954c1994
GS
2536=for apidoc p||call_argv
2537
2538Performs a callback to the specified Perl sub. See L<perlcall>.
2539
2540=cut
2541*/
2542
a0d0e21e 2543I32
8f42b153 2544Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2545
8ac85365
NIS
2546 /* See G_* flags in cop.h */
2547 /* null terminated arg list */
8990e307 2548{
97aff369 2549 dVAR;
a0d0e21e 2550 dSP;
8990e307 2551
7918f24d
NC
2552 PERL_ARGS_ASSERT_CALL_ARGV;
2553
924508f0 2554 PUSHMARK(SP);
a0d0e21e 2555 if (argv) {
8990e307 2556 while (*argv) {
6e449a3a 2557 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2558 argv++;
2559 }
a0d0e21e 2560 PUTBACK;
8990e307 2561 }
864dbfa3 2562 return call_pv(sub_name, flags);
8990e307
LW
2563}
2564
954c1994
GS
2565/*
2566=for apidoc p||call_pv
2567
2568Performs a callback to the specified Perl sub. See L<perlcall>.
2569
2570=cut
2571*/
2572
a0d0e21e 2573I32
864dbfa3 2574Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2575 /* name of the subroutine */
2576 /* See G_* flags in cop.h */
a0d0e21e 2577{
7918f24d
NC
2578 PERL_ARGS_ASSERT_CALL_PV;
2579
864dbfa3 2580 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2581}
2582
954c1994
GS
2583/*
2584=for apidoc p||call_method
2585
2586Performs a callback to the specified Perl method. The blessed object must
2587be on the stack. See L<perlcall>.
2588
2589=cut
2590*/
2591
a0d0e21e 2592I32
864dbfa3 2593Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2594 /* name of the subroutine */
2595 /* See G_* flags in cop.h */
a0d0e21e 2596{
7918f24d
NC
2597 PERL_ARGS_ASSERT_CALL_METHOD;
2598
968b3946 2599 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2600}
2601
2602/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2603/*
2604=for apidoc p||call_sv
2605
2606Performs a callback to the Perl sub whose name is in the SV. See
2607L<perlcall>.
2608
2609=cut
2610*/
2611
a0d0e21e 2612I32
001d637e 2613Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2614 /* See G_* flags in cop.h */
a0d0e21e 2615{
27da23d5 2616 dVAR; dSP;
a0d0e21e 2617 LOGOP myop; /* fake syntax tree node */
968b3946 2618 UNOP method_op;
aa689395 2619 I32 oldmark;
8ea43dc8 2620 VOL I32 retval = 0;
a0d0e21e 2621 I32 oldscope;
54310121 2622 bool oldcatch = CATCH_GET;
6224f72b 2623 int ret;
c4420975 2624 OP* const oldop = PL_op;
db36c5a1 2625 dJMPENV;
1e422769 2626
7918f24d
NC
2627 PERL_ARGS_ASSERT_CALL_SV;
2628
a0d0e21e
LW
2629 if (flags & G_DISCARD) {
2630 ENTER;
2631 SAVETMPS;
2632 }
2f8edad0
NC
2633 if (!(flags & G_WANT)) {
2634 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2635 */
2636 flags |= G_SCALAR;
2637 }
a0d0e21e 2638
aa689395 2639 Zero(&myop, 1, LOGOP);
5f66b61c 2640 myop.op_next = NULL;
f51d4af5 2641 if (!(flags & G_NOARGS))
aa689395 2642 myop.op_flags |= OPf_STACKED;
4f911530 2643 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2644 SAVEOP();
533c011a 2645 PL_op = (OP*)&myop;
aa689395 2646
3280af22
NIS
2647 EXTEND(PL_stack_sp, 1);
2648 *++PL_stack_sp = sv;
aa689395 2649 oldmark = TOPMARK;
3280af22 2650 oldscope = PL_scopestack_ix;
a0d0e21e 2651
3280af22 2652 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2653 /* Handle first BEGIN of -d. */
3280af22 2654 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2655 /* Try harder, since this may have been a sighandler, thus
2656 * curstash may be meaningless. */
3280af22 2657 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2658 && !(flags & G_NODEBUG))
533c011a 2659 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2660
968b3946
GS
2661 if (flags & G_METHOD) {
2662 Zero(&method_op, 1, UNOP);
2663 method_op.op_next = PL_op;
2664 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2665 method_op.op_type = OP_METHOD;
968b3946 2666 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2667 myop.op_type = OP_ENTERSUB;
f39d0b86 2668 PL_op = (OP*)&method_op;
968b3946
GS
2669 }
2670
312caa8e 2671 if (!(flags & G_EVAL)) {
0cdb2077 2672 CATCH_SET(TRUE);
d6f07c05 2673 CALL_BODY_SUB((OP*)&myop);
312caa8e 2674 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2675 CATCH_SET(oldcatch);
312caa8e
CS
2676 }
2677 else {
d78bda3d 2678 myop.op_other = (OP*)&myop;
3280af22 2679 PL_markstack_ptr--;
edb2152a 2680 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2681 PL_markstack_ptr++;
a0d0e21e 2682
14dd3ad8 2683 JMPENV_PUSH(ret);
edb2152a 2684
6224f72b
GS
2685 switch (ret) {
2686 case 0:
14dd3ad8 2687 redo_body:
d6f07c05 2688 CALL_BODY_SUB((OP*)&myop);
312caa8e
CS
2689 retval = PL_stack_sp - (PL_stack_base + oldmark);
2690 if (!(flags & G_KEEPERR))
c69006e4 2691 sv_setpvn(ERRSV,"",0);
a0d0e21e 2692 break;
6224f72b 2693 case 1:
f86702cc 2694 STATUS_ALL_FAILURE;
a0d0e21e 2695 /* FALL THROUGH */
6224f72b 2696 case 2:
a0d0e21e 2697 /* my_exit() was called */
3280af22 2698 PL_curstash = PL_defstash;
a0d0e21e 2699 FREETMPS;
14dd3ad8 2700 JMPENV_POP;
cc3604b1 2701 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2702 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2703 my_exit_jump();
a0d0e21e 2704 /* NOTREACHED */
6224f72b 2705 case 3:
3280af22 2706 if (PL_restartop) {
533c011a 2707 PL_op = PL_restartop;
3280af22 2708 PL_restartop = 0;
312caa8e 2709 goto redo_body;
a0d0e21e 2710 }
3280af22 2711 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2712 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2713 retval = 0;
2714 else {
2715 retval = 1;
3280af22 2716 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2717 }
312caa8e 2718 break;
a0d0e21e 2719 }
a0d0e21e 2720
edb2152a
NC
2721 if (PL_scopestack_ix > oldscope)
2722 delete_eval_scope();
14dd3ad8 2723 JMPENV_POP;
a0d0e21e 2724 }
1e422769 2725
a0d0e21e 2726 if (flags & G_DISCARD) {
3280af22 2727 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2728 retval = 0;
2729 FREETMPS;
2730 LEAVE;
2731 }
533c011a 2732 PL_op = oldop;
a0d0e21e
LW
2733 return retval;
2734}
2735
6e72f9df 2736/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2737
954c1994
GS
2738/*
2739=for apidoc p||eval_sv
2740
2741Tells Perl to C<eval> the string in the SV.
2742
2743=cut
2744*/
2745
a0d0e21e 2746I32
864dbfa3 2747Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2748
8ac85365 2749 /* See G_* flags in cop.h */
a0d0e21e 2750{
97aff369 2751 dVAR;
924508f0 2752 dSP;
a0d0e21e 2753 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2754 VOL I32 oldmark = SP - PL_stack_base;
2755 VOL I32 retval = 0;
6224f72b 2756 int ret;
c4420975 2757 OP* const oldop = PL_op;
db36c5a1 2758 dJMPENV;
84902520 2759
7918f24d
NC
2760 PERL_ARGS_ASSERT_EVAL_SV;
2761
4633a7c4
LW
2762 if (flags & G_DISCARD) {
2763 ENTER;
2764 SAVETMPS;
2765 }
2766
462e5cf6 2767 SAVEOP();
533c011a
NIS
2768 PL_op = (OP*)&myop;
2769 Zero(PL_op, 1, UNOP);
3280af22
NIS
2770 EXTEND(PL_stack_sp, 1);
2771 *++PL_stack_sp = sv;
79072805 2772
4633a7c4
LW
2773 if (!(flags & G_NOARGS))
2774 myop.op_flags = OPf_STACKED;
5f66b61c 2775 myop.op_next = NULL;
6e72f9df 2776 myop.op_type = OP_ENTEREVAL;
4f911530 2777 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2778 if (flags & G_KEEPERR)
2779 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2780
dedbcade
DM
2781 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2782 * before a PUSHEVAL, which corrupts the stack after a croak */
2783 TAINT_PROPER("eval_sv()");
2784
14dd3ad8 2785 JMPENV_PUSH(ret);
6224f72b
GS
2786 switch (ret) {
2787 case 0:
14dd3ad8 2788 redo_body:
d6f07c05 2789 CALL_BODY_EVAL((OP*)&myop);
312caa8e
CS
2790 retval = PL_stack_sp - (PL_stack_base + oldmark);
2791 if (!(flags & G_KEEPERR))
c69006e4 2792 sv_setpvn(ERRSV,"",0);
4633a7c4 2793 break;
6224f72b 2794 case 1:
f86702cc 2795 STATUS_ALL_FAILURE;
4633a7c4 2796 /* FALL THROUGH */
6224f72b 2797 case 2:
4633a7c4 2798 /* my_exit() was called */
3280af22 2799 PL_curstash = PL_defstash;
4633a7c4 2800 FREETMPS;
14dd3ad8 2801 JMPENV_POP;
cc3604b1 2802 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2803 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2804 my_exit_jump();
4633a7c4 2805 /* NOTREACHED */
6224f72b 2806 case 3:
3280af22 2807 if (PL_restartop) {
533c011a 2808 PL_op = PL_restartop;
3280af22 2809 PL_restartop = 0;
312caa8e 2810 goto redo_body;
4633a7c4 2811 }
3280af22 2812 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2813 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2814 retval = 0;
2815 else {
2816 retval = 1;
3280af22 2817 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2818 }
312caa8e 2819 break;
4633a7c4
LW
2820 }
2821
14dd3ad8 2822 JMPENV_POP;
4633a7c4 2823 if (flags & G_DISCARD) {
3280af22 2824 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2825 retval = 0;
2826 FREETMPS;
2827 LEAVE;
2828 }
533c011a 2829 PL_op = oldop;
4633a7c4
LW
2830 return retval;
2831}
2832
954c1994
GS
2833/*
2834=for apidoc p||eval_pv
2835
2836Tells Perl to C<eval> the given string and return an SV* result.
2837
2838=cut
2839*/
2840
137443ea 2841SV*
864dbfa3 2842Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2843{
97aff369 2844 dVAR;
137443ea
PP
2845 dSP;
2846 SV* sv = newSVpv(p, 0);
2847
7918f24d
NC
2848 PERL_ARGS_ASSERT_EVAL_PV;
2849
864dbfa3 2850 eval_sv(sv, G_SCALAR);
137443ea
PP
2851 SvREFCNT_dec(sv);
2852
2853 SPAGAIN;
2854 sv = POPs;
2855 PUTBACK;
2856
2d8e6c8d 2857 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2858 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2859 }
137443ea
PP
2860
2861 return sv;
2862}
2863
4633a7c4
LW
2864/* Require a module. */
2865
954c1994 2866/*
ccfc67b7
JH
2867=head1 Embedding Functions
2868
954c1994
GS
2869=for apidoc p||require_pv
2870
7d3fb230
BS
2871Tells Perl to C<require> the file named by the string argument. It is
2872analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2873implemented that way; consider using load_module instead.
954c1994 2874
7d3fb230 2875=cut */
954c1994 2876
4633a7c4 2877void
864dbfa3 2878Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2879{
97aff369 2880 dVAR;
d3acc0f7 2881 dSP;
97aff369 2882 SV* sv;
7918f24d
NC
2883
2884 PERL_ARGS_ASSERT_REQUIRE_PV;
2885
e788e7d3 2886 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2887 PUTBACK;
be41e5d9
NC
2888 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2889 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2890 SPAGAIN;
2891 POPSTACK;
79072805
LW
2892}
2893
79072805 2894void
e1ec3a88 2895Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2896{
71315bf2 2897 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2898
7918f24d
NC
2899 PERL_ARGS_ASSERT_MAGICNAME;
2900
c4420975 2901 if (gv)
14befaf4 2902 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2903}
2904
76e3520e 2905STATIC void
e1ec3a88 2906S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2907{
ab821d7f 2908 /* This message really ought to be max 23 lines.
75c72d73 2909 * Removed -h because the user already knows that option. Others? */
fb73857a 2910
27da23d5 2911 static const char * const usage_msg[] = {
aefc56c5 2912"-0[octal] specify record separator (\\0, if no argument)",
aefc56c5
SF
2913"-a autosplit mode with -n or -p (splits $_ into @F)",
2914"-C[number/list] enables the listed Unicode features",
2915"-c check syntax only (runs BEGIN and CHECK blocks)",
2916"-d[:debugger] run program under debugger",
2917"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2918"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2919"-E program like -e, but enables all optional features",
aefc56c5 2920"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2921"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2922"-i[extension] edit <> files in place (makes backup if extension supplied)",
2923"-Idirectory specify @INC/#include directory (several -I's allowed)",
2924"-l[octal] enable line ending processing, specifies line terminator",
2925"-[mM][-]module execute \"use/no module...\" before executing program",
2926"-n assume \"while (<>) { ... }\" loop around program",
2927"-p assume loop like -n but print line also, like sed",
aefc56c5
SF
2928"-s enable rudimentary parsing for switches after programfile",
2929"-S look for programfile using PATH environment variable",
2930"-t enable tainting warnings",
2931"-T enable tainting checks",
2932"-u dump core after parsing program",
2933"-U allow unsafe operations",
2934"-v print version, subversion (includes VERY IMPORTANT perl info)",
2935"-V[:variable] print configuration summary (or a single Config.pm variable)",
2936"-w enable many useful warnings (RECOMMENDED)",
2937"-W enable all warnings",
2938"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2939"-X disable all warnings",
fb73857a
PP
2940"\n",
2941NULL
2942};
27da23d5 2943 const char * const *p = usage_msg;
fb73857a 2944
7918f24d
NC
2945 PERL_ARGS_ASSERT_USAGE;
2946
b0e47665
GS
2947 PerlIO_printf(PerlIO_stdout(),
2948 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2949 name);
fb73857a 2950 while (*p)
b0e47665 2951 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2952}
2953
b4ab917c
DM
2954/* convert a string of -D options (or digits) into an int.
2955 * sets *s to point to the char after the options */
2956
2957#ifdef DEBUGGING
2958int
e1ec3a88 2959Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2960{
27da23d5 2961 static const char * const usage_msgd[] = {
e6e64d9b
JC
2962 " Debugging flag values: (see also -d)",
2963 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2964 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2965 " l Context (loop) stack processing",
2966 " t Trace execution",
2967 " o Method and overloading resolution",
2968 " c String/numeric conversions",
4c84d7f2 2969 " P Print profiling info, source file input state",
e6e64d9b
JC
2970 " m Memory allocation",
2971 " f Format processing",
2972 " r Regular expression parsing and execution",
2973 " x Syntax tree dump",
3679267a 2974 " u Tainting checks",
e6e64d9b
JC
2975 " H Hash dump -- usurps values()",
2976 " X Scratchpad allocation",
2977 " D Cleaning up",
e6e64d9b
JC
2978 " T Tokenising",
2979 " R Include reference counts of dumped variables (eg when using -Ds)",
2980 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2981 " v Verbose: use in conjunction with other flags",
2982 " C Copy On Write",
2983 " A Consistency checks on internal structures",
3679267a 2984 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2985 NULL
2986 };
b4ab917c 2987 int i = 0;
7918f24d
NC
2988
2989 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2990
b4ab917c
DM
2991 if (isALPHA(**s)) {
2992 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2993 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2994
2995 for (; isALNUM(**s); (*s)++) {
c4420975 2996 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2997 if (d)
2998 i |= 1 << (d - debopts);
2999 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3000 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3001 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3002 }
3003 }
e6e64d9b 3004 else if (isDIGIT(**s)) {
b4ab917c
DM
3005 i = atoi(*s);
3006 for (; isALNUM(**s); (*s)++) ;
3007 }
ddcf8bc1 3008 else if (givehelp) {
06e869a4 3009 const char *const *p = usage_msgd;
e6e64d9b
JC
3010 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
3011 }
b4ab917c
DM
3012# ifdef EBCDIC
3013 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3014 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3015 "-Dp not implemented on this platform\n");
3016# endif
3017 return i;
3018}
3019#endif
3020
79072805
LW
3021/* This routine handles any switches that can be given during run */
3022
c7030b81
NC
3023const char *
3024Perl_moreswitches(pTHX_ const char *s)
79072805 3025{
27da23d5 3026 dVAR;
84c133a0 3027 UV rschar;
79072805 3028
7918f24d
NC
3029 PERL_ARGS_ASSERT_MORESWITCHES;
3030
79072805
LW
3031 switch (*s) {
3032 case '0':
a863c7d1 3033 {
f2095865 3034 I32 flags = 0;
a3b680e6 3035 STRLEN numlen;
f2095865
JH
3036
3037 SvREFCNT_dec(PL_rs);
3038 if (s[1] == 'x' && s[2]) {
a3b680e6 3039 const char *e = s+=2;
f2095865
JH
3040 U8 *tmps;
3041
a3b680e6
AL
3042 while (*e)
3043 e++;
f2095865
JH
3044 numlen = e - s;
3045 flags = PERL_SCAN_SILENT_ILLDIGIT;
3046 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3047 if (s + numlen < e) {
3048 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3049 numlen = 0;
3050 s--;
3051 }
396482e1 3052 PL_rs = newSVpvs("");
c5661c80 3053 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3054 tmps = (U8*)SvPVX(PL_rs);
3055 uvchr_to_utf8(tmps, rschar);
3056 SvCUR_set(PL_rs, UNISKIP(rschar));
3057 SvUTF8_on(PL_rs);
3058 }
3059 else {
3060 numlen = 4;
3061 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3062 if (rschar & ~((U8)~0))
3063 PL_rs = &PL_sv_undef;
3064 else if (!rschar && numlen >= 2)
396482e1 3065 PL_rs = newSVpvs("");
f2095865
JH
3066 else {
3067 char ch = (char)rschar;
3068 PL_rs = newSVpvn(&ch, 1);
3069 }
3070 }
800633c3 3071 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3072 return s + numlen;
a863c7d1 3073 }
46487f74 3074 case 'C':
a05d7ebb 3075 s++;
dd374669 3076 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3077 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3078 PL_utf8cache = -1;
46487f74 3079 return s;
2304df62 3080 case 'F':
3280af22 3081 PL_minus_F = TRUE;
ebce5377
RGS
3082 PL_splitstr = ++s;
3083 while (*s && !isSPACE(*s)) ++s;
e49e380e 3084 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3085 return s;
79072805 3086 case 'a':
3280af22 3087 PL_minus_a = TRUE;
79072805
LW
3088 s++;
3089 return s;
3090 case 'c':
3280af22 3091 PL_minus_c = TRUE;
79072805
LW
3092 s++;
3093 return s;
3094 case 'd':
f20b2998 3095 forbid_setid('d', FALSE);
4633a7c4 3096 s++;
2cbb2ee1
RGS
3097
3098 /* -dt indicates to the debugger that threads will be used */
3099 if (*s == 't' && !isALNUM(s[1])) {
3100 ++s;
3101 my_setenv("PERL5DB_THREADED", "1");
3102 }
3103
70c94a19
RR
3104 /* The following permits -d:Mod to accepts arguments following an =
3105 in the fashion that -MSome::Mod does. */
3106 if (*s == ':' || *s == '=') {
f85893a1
NC
3107 const char *start = ++s;
3108 const char *const end = s + strlen(s);
396482e1 3109 SV * const sv = newSVpvs("use Devel::");
f85893a1 3110
70c94a19
RR
3111 /* We now allow -d:Module=Foo,Bar */
3112 while(isALNUM(*s) || *s==':') ++s;
3113 if (*s != '=')
f85893a1 3114 sv_catpvn(sv, start, end - start);
70c94a19
RR
3115 else {
3116 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3117 /* Don't use NUL as q// delimiter here, this string goes in the
3118 * environment. */
3119 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3120 }
f85893a1 3121 s = end;
184f32ec 3122 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3123 SvREFCNT_dec(sv);
4633a7c4 3124 }
ed094faf 3125 if (!PL_perldb) {
3280af22 3126 PL_perldb = PERLDB_ALL;
a0d0e21e 3127 init_debugger();
ed094faf 3128 }
79072805
LW
3129 return s;
3130 case 'D':
0453d815 3131 {
79072805 3132#ifdef DEBUGGING
f20b2998 3133 forbid_setid('D', FALSE);
b4ab917c 3134 s++;
dd374669 3135 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3136#else /* !DEBUGGING */
0453d815 3137 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3138 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3139 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3140 for (s++; isALNUM(*s); s++) ;
79072805 3141#endif
79072805 3142 return s;
0453d815 3143 }
4633a7c4 3144 case 'h':
ac27b0f5 3145 usage(PL_origargv[0]);
7ca617d0 3146 my_exit(0);
79072805 3147 case 'i':
43c5f42d 3148 Safefree(PL_inplace);
c030f24b
GH
3149#if defined(__CYGWIN__) /* do backup extension automagically */
3150 if (*(s+1) == '\0') {
c86a4f2e 3151 PL_inplace = savepvs(".bak");
c030f24b
GH
3152 return s+1;
3153 }
3154#endif /* __CYGWIN__ */
5ef5d758 3155 {
d4c19fe8 3156 const char * const start = ++s;
5ef5d758
NC
3157 while (*s && !isSPACE(*s))
3158 ++s;
3159
3160 PL_inplace = savepvn(start, s - start);
3161 }
7b8d334a 3162 if (*s) {
5ef5d758 3163 ++s;
7b8d334a 3164 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3165 s++;
7b8d334a 3166 }
fb73857a 3167 return s;
4e49a025 3168 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3169 forbid_setid('I', FALSE);
fb73857a
PP
3170 ++s;
3171 while (*s && isSPACE(*s))
3172 ++s;
3173 if (*s) {
c7030b81 3174 const char *e, *p;
0df16ed7
GS
3175 p = s;
3176 /* ignore trailing spaces (possibly followed by other switches) */
3177 do {
3178 for (e = p; *e && !isSPACE(*e); e++) ;
3179 p = e;
3180 while (isSPACE(*p))
3181 p++;
3182 } while (*p && *p != '-');
3183 e = savepvn(s, e-s);
88fe16b2 3184 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3185 Safefree(e);
3186 s = p;
3187 if (*s == '-')
3188 s++;
79072805
LW
3189 }
3190 else
a67e862a 3191 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3192 return s;
79072805 3193 case 'l':
3280af22 3194 PL_minus_l = TRUE;
79072805 3195 s++;
7889fe52
NIS
3196 if (PL_ors_sv) {
3197 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3198 PL_ors_sv = NULL;
7889fe52 3199 }
79072805 3200 if (isDIGIT(*s)) {
53305cf1 3201 I32 flags = 0;
a3b680e6 3202 STRLEN numlen;
396482e1 3203 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3204 numlen = 3 + (*s == '0');
3205 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3206 s += numlen;
3207 }
3208 else {
8bfdd7d9 3209 if (RsPARA(PL_rs)) {
396482e1 3210 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3211 }
3212 else {
8bfdd7d9 3213 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3214 }
79072805
LW
3215 }
3216 return s;
1a30305b 3217 case 'M':
f20b2998 3218 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3219 /* FALL THROUGH */
3220 case 'm':
f20b2998 3221 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3222 if (*++s) {
c7030b81 3223 const char *start;
b64cb68c 3224 const char *end;
11343788 3225 SV *sv;
e1ec3a88 3226 const char *use = "use ";
a5f75d66 3227 /* -M-foo == 'no foo' */
d0043bd1
NC
3228 /* Leading space on " no " is deliberate, to make both
3229 possibilities the same length. */
3230 if (*s == '-') { use = " no "; ++s; }
3231 sv = newSVpvn(use,4);
a5f75d66 3232 start = s;
1a30305b 3233 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 3234 while(isALNUM(*s) || *s==':') ++s;
b64cb68c 3235 end = s + strlen(s);
c07a80fd 3236 if (*s != '=') {
b64cb68c 3237 sv_catpvn(sv, start, end - start);
c07a80fd
PP
3238 if (*(start-1) == 'm') {
3239 if (*s != '\0')
cea2e8a9 3240 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3241 sv_catpvs( sv, " ()");
c07a80fd
PP
3242 }
3243 } else {
6df41af2 3244 if (s == start)
be98fb35
GS
3245 Perl_croak(aTHX_ "Module name required with -%c option",
3246 s[-1]);
11343788 3247 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3248 /* Use NUL as q''-delimiter. */
3249 sv_catpvs(sv, " split(/,/,q\0");
3250 ++s;
3251 sv_catpvn(sv, s, end - s);
396482e1 3252 sv_catpvs(sv, "\0)");
c07a80fd 3253 }
b64cb68c 3254 s = end;
29a861e7 3255 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3256 }
3257 else
9e81e6a1 3258 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3259 return s;
79072805 3260 case 'n':
3280af22 3261 PL_minus_n = TRUE;
79072805
LW
3262 s++;
3263 return s;
3264 case 'p':
3280af22 3265 PL_minus_p = TRUE;
79072805
LW
3266 s++;
3267 return s;
3268 case 's':
f20b2998 3269 forbid_setid('s', FALSE);
3280af22 3270 PL_doswitches = TRUE;
79072805
LW
3271 s++;
3272 return s;
6537fe72
MS
3273 case 't':
3274 if (!PL_tainting)
22f7c9c9 3275 TOO_LATE_FOR('t');
6537fe72
MS
3276 s++;
3277 return s;
463ee0b2 3278 case 'T':
3280af22 3279 if (!PL_tainting)
22f7c9c9 3280 TOO_LATE_FOR('T');
463ee0b2
LW
3281 s++;
3282 return s;
79072805 3283 case 'u':
bf4acbe4
GS
3284#ifdef MACOS_TRADITIONAL
3285 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3286#endif
3280af22 3287 PL_do_undump = TRUE;
79072805
LW
3288 s++;
3289 return s;
3290 case 'U':
3280af22 3291 PL_unsafe = TRUE;
79072805
LW
3292 s++;
3293 return s;
3294 case 'v':
d7aa5382 3295 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3296 upg_version(PL_patchlevel, TRUE);
8e9464f1 3297#if !defined(DGUX)
b0e47665 3298 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3299 Perl_form(aTHX_ "\nThis is perl, %"SVf
3300#ifdef PERL_PATCHNUM
3301 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3302#endif
3303 " built for %s",
be2597df 3304 SVfARG(vstringify(PL_patchlevel)),
95b63a38 3305 ARCHNAME));
8e9464f1
JH
3306#else /* DGUX */
3307/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3308 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3309 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3310 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3311 PerlIO_printf(PerlIO_stdout(),
3312 Perl_form(aTHX_ " built under %s at %s %s\n",
3313 OSNAME, __DATE__, __TIME__));
3314 PerlIO_printf(PerlIO_stdout(),
3315 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3316 OSVERS));
8e9464f1
JH
3317#endif /* !DGUX */
3318
fb73857a
PP
3319#if defined(LOCAL_PATCH_COUNT)
3320 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3321 PerlIO_printf(PerlIO_stdout(),
3322 "\n(with %d registered patch%s, "
3323 "see perl -V for more detail)",
bb7a0f54 3324 LOCAL_PATCH_COUNT,
b0e47665 3325 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3326#endif
1a30305b 3327
b0e47665 3328 PerlIO_printf(PerlIO_stdout(),
34ce1597 3329 "\n\nCopyright 1987-2007, Larry Wall\n");
eae9c151
JH
3330#ifdef MACOS_TRADITIONAL
3331 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3332 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3333 "maintained by Chris Nandor\n");
eae9c151 3334#endif
79072805 3335#ifdef MSDOS
b0e47665
GS
3336 PerlIO_printf(PerlIO_stdout(),
3337 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3338#endif
3339#ifdef DJGPP
b0e47665
GS
3340 PerlIO_printf(PerlIO_stdout(),
3341 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3342 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3343#endif
79072805 3344#ifdef OS2
b0e47665
GS
3345 PerlIO_printf(PerlIO_stdout(),
3346 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3347 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3348#endif
79072805 3349#ifdef atarist
b0e47665
GS
3350 PerlIO_printf(PerlIO_stdout(),
3351 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3352#endif
a3f9223b 3353#ifdef __BEOS__
b0e47665
GS
3354 PerlIO_printf(PerlIO_stdout(),
3355 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3356#endif
1d84e8df 3357#ifdef MPE
b0e47665 3358 PerlIO_printf(PerlIO_stdout(),
e583a879 3359 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3360#endif
9d116dd7 3361#ifdef OEMVS
b0e47665
GS
3362 PerlIO_printf(PerlIO_stdout(),
3363 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3364#endif
495c5fdc 3365#ifdef __VOS__
b0e47665 3366 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3367 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3368#endif
092bebab 3369#ifdef __OPEN_VM
b0e47665
GS
3370 PerlIO_printf(PerlIO_stdout(),
3371 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3372#endif
a1a0e61e 3373#ifdef POSIX_BC
b0e47665
GS
3374 PerlIO_printf(PerlIO_stdout(),
3375 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3376#endif
61ae2fbf 3377#ifdef __MINT__
b0e47665
GS
3378 PerlIO_printf(PerlIO_stdout(),
3379 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3380#endif
f83d2536 3381#ifdef EPOC
b0e47665 3382 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3383 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3384#endif
e1caacb4 3385#ifdef UNDER_CE
b475b3e6
JH
3386 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3387 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3388 wce_hitreturn();
3389#endif
a0fd4948 3390#ifdef __SYMBIAN32__
27da23d5
JH
3391 PerlIO_printf(PerlIO_stdout(),
3392 "Symbian port by Nokia, 2004-2005\n");
3393#endif
baed7233
DL
3394#ifdef BINARY_BUILD_NOTICE
3395 BINARY_BUILD_NOTICE;
3396#endif
b0e47665
GS
3397 PerlIO_printf(PerlIO_stdout(),
3398 "\n\
79072805 3399Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3400GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3401Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3402this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3403Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3404 my_exit(0);
79072805 3405 case 'w':
b2e5e6ba 3406 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3407 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3408 }
599cee73
PM
3409 s++;
3410 return s;
3411 case 'W':
ac27b0f5 3412 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3413 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3414 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3415 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3416 s++;
3417 return s;
3418 case 'X':
ac27b0f5 3419 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3420 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3421 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3422 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3423 s++;
3424 return s;
a0d0e21e 3425 case '*':
79072805
LW
3426 case ' ':
3427 if (s[1] == '-') /* Additional switches on #! line. */
3428 return s+2;
3429 break;
a0d0e21e 3430 case '-':
79072805 3431 case 0:
51882d45 3432#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3433 case '\r':
3434#endif
79072805
LW
3435 case '\n':
3436 case '\t':
3437 break;
aa689395
PP
3438#ifdef ALTERNATE_SHEBANG
3439 case 'S': /* OS/2 needs -S on "extproc" line. */
3440 break;
3441#endif
79072805 3442 default:
cea2e8a9 3443 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3444 }
bd61b366 3445 return NULL;
79072805
LW
3446}
3447
3448/* compliments of Tom Christiansen */
3449
3450/* unexec() can be found in the Gnu emacs distribution */
ee580363 3451/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3452
3453void
864dbfa3 3454Perl_my_unexec(pTHX)
79072805 3455{
b37c2d43 3456 PERL_UNUSED_CONTEXT;
79072805 3457#ifdef UNEXEC
b37c2d43
AL
3458 SV * prog = newSVpv(BIN_EXP, 0);
3459 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3460 int status = 1;
79072805
LW
3461 extern int etext;
3462
396482e1 3463 sv_catpvs(prog, "/perl");
396482e1 3464 sv_catpvs(file, ".perldump");
79072805 3465
ee580363
GS
3466 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3467 /* unexec prints msg to stderr in case of failure */
6ad3d225 3468 PerlProc_exit(status);
79072805 3469#else
a5f75d66
AD
3470# ifdef VMS
3471# include <lib$routines.h>
3472 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3473# elif defined(WIN32) || defined(__CYGWIN__)
3474 Perl_croak(aTHX_ "dump is not supported");
aa689395 3475# else
79072805 3476 ABORT(); /* for use with undump */
aa689395 3477# endif
a5f75d66 3478#endif
79072805
LW
3479}
3480
cb68f92d
GS
3481/* initialize curinterp */
3482STATIC void
cea2e8a9 3483S_init_interp(pTHX)
cb68f92d 3484{
97aff369 3485 dVAR;
acfe0abc
GS
3486#ifdef MULTIPLICITY
3487# define PERLVAR(var,type)
3488# define PERLVARA(var,n,type)
3489# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3490# define PERLVARI(var,type,init) aTHX->var = init;
3491# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3492# else
acfe0abc
GS
3493# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3494# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3495# endif
acfe0abc 3496# include "intrpvar.h"
acfe0abc
GS
3497# undef PERLVAR
3498# undef PERLVARA
3499# undef PERLVARI
3500# undef PERLVARIC
3501#else
3502# define PERLVAR(var,type)
3503# define PERLVARA(var,n,type)
3504# define PERLVARI(var,type,init) PL_##var = init;
3505# define PERLVARIC(var,type,init) PL_##var = init;
3506# include "intrpvar.h"
acfe0abc
GS
3507# undef PERLVAR
3508# undef PERLVARA
3509# undef PERLVARI
3510# undef PERLVARIC
cb68f92d
GS