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1/* perl.c
2 *
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3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
4 * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 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 *
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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
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19 */
20
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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
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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
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95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
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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
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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;
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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 }
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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
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258
259/*
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260=head1 Embedding Functions
261
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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);
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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
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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);
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308 if (PL_perl_destruct_level > 0)
309 init_interp();
310#endif
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311 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
312
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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
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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);
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326 SvIOK_on(&PL_sv_no);
327 SvNOK_on(&PL_sv_no);
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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);
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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;
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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 */
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PP
359#endif
360
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361#ifdef HAVE_INTERP_INTERN
362 sys_intern_init();
363#endif
364
3a1ee7e8 365 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 366
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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. */
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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
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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
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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
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AB
388 HvSHAREKEYS_off(PL_strtab); /* mandatory */
389 hv_ksplit(PL_strtab, 512);
390
0631ea03
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391#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
392 _dyld_lookup_and_bind
393 ("__environ", (unsigned long *) &environ_pointer, NULL);
394#endif /* environ */
395
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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.
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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__)
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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
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461}
462
954c1994 463/*
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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
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493 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
494
bf357333 495 if(sock == -1 || debug_fd == -1)
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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
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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);
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NC
523
524 if(got < 0) {
bf357333 525 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
526 abort();
527 }
bf357333
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528 if(got < sizeof(sv)) {
529 perror("Debug leaking scalars parent short sendmsg");
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NC
530 abort();
531 }
532
808ad2d0
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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 */
b61433a9 665 static const char success[sizeof(int) + 1] = {0};
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. */
5226ed68
JH
1130
1131 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1132 while (sv_clean_all() > 2)
5226ed68
JH
1133 ;
1134
d4777f27
GS
1135 AvREAL_off(PL_fdpid); /* no surviving entries */
1136 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1137 PL_fdpid = NULL;
d33b2eba 1138
6c644e78
GS
1139#ifdef HAVE_INTERP_INTERN
1140 sys_intern_clear();
1141#endif
1142
6e72f9df
PP
1143 /* Destruct the global string table. */
1144 {
1145 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1146 * so that sv_free() won't fail on them.
80459961
NC
1147 * Now that the global string table is using a single hunk of memory
1148 * for both HE and HEK, we either need to explicitly unshare it the
1149 * correct way, or actually free things here.
6e72f9df 1150 */
80459961
NC
1151 I32 riter = 0;
1152 const I32 max = HvMAX(PL_strtab);
c4420975 1153 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1154 HE *hent = array[0];
1155
6e72f9df 1156 for (;;) {
0453d815 1157 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1158 HE * const next = HeNEXT(hent);
9014280d 1159 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1160 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1161 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1162 Safefree(hent);
1163 hent = next;
6e72f9df
PP
1164 }
1165 if (!hent) {
1166 if (++riter > max)
1167 break;
1168 hent = array[riter];
1169 }
1170 }
80459961
NC
1171
1172 Safefree(array);
1173 HvARRAY(PL_strtab) = 0;
1174 HvTOTALKEYS(PL_strtab) = 0;
1175 HvFILL(PL_strtab) = 0;
6e72f9df 1176 }
3280af22 1177 SvREFCNT_dec(PL_strtab);
6e72f9df 1178
e652bb2f 1179#ifdef USE_ITHREADS
c21d1a0f 1180 /* free the pointer tables used for cloning */
a0739874 1181 ptr_table_free(PL_ptr_table);
bf9cdc68 1182 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1183#endif
a0739874 1184
d33b2eba
GS
1185 /* free special SVs */
1186
1187 SvREFCNT(&PL_sv_yes) = 0;
1188 sv_clear(&PL_sv_yes);
1189 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1190 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1191
1192 SvREFCNT(&PL_sv_no) = 0;
1193 sv_clear(&PL_sv_no);
1194 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1195 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1196
9f375a43
DM
1197 {
1198 int i;
1199 for (i=0; i<=2; i++) {
1200 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1201 sv_clear(PERL_DEBUG_PAD(i));
1202 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1203 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1204 }
1205 }
1206
0453d815 1207 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1208 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1209
eba0f806
DM
1210#ifdef DEBUG_LEAKING_SCALARS
1211 if (PL_sv_count != 0) {
1212 SV* sva;
1213 SV* sv;
1214 register SV* svend;
1215
1216 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1217 svend = &sva[SvREFCNT(sva)];
1218 for (sv = sva + 1; sv < svend; ++sv) {
1219 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1220 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1221 " flags=0x%"UVxf
fd0854ff
DM
1222 " refcnt=%"UVuf pTHX__FORMAT "\n"
1223 "\tallocated at %s:%d %s %s%s\n",
574b8821
NC
1224 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1225 pTHX__VALUE,
fd0854ff
DM
1226 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1227 sv->sv_debug_line,
1228 sv->sv_debug_inpad ? "for" : "by",
1229 sv->sv_debug_optype ?
1230 PL_op_name[sv->sv_debug_optype]: "(none)",
1231 sv->sv_debug_cloned ? " (cloned)" : ""
1232 );
2aa47728 1233#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1234 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1235#endif
eba0f806
DM
1236 }
1237 }
1238 }
1239 }
2aa47728
NC
1240#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1241 {
1242 int status;
1243 fd_set rset;
1244 /* Wait for up to 4 seconds for child to terminate.
1245 This seems to be the least effort way of timing out on reaping
1246 its exit status. */
1247 struct timeval waitfor = {4, 0};
41e4abd8 1248 int sock = PL_dumper_fd;
2aa47728
NC
1249
1250 shutdown(sock, 1);
1251 FD_ZERO(&rset);
1252 FD_SET(sock, &rset);
1253 select(sock + 1, &rset, NULL, NULL, &waitfor);
1254 waitpid(child, &status, WNOHANG);
1255 close(sock);
1256 }
1257#endif
eba0f806 1258#endif
77abb4c6
NC
1259#ifdef DEBUG_LEAKING_SCALARS_ABORT
1260 if (PL_sv_count)
1261 abort();
1262#endif
bf9cdc68 1263 PL_sv_count = 0;
eba0f806 1264
f1fac472
NC
1265#ifdef PERL_DEBUG_READONLY_OPS
1266 free(PL_slabs);
1267 PL_slabs = NULL;
1268 PL_slab_count = 0;
1269#endif
eba0f806 1270
56a2bab7 1271#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1272 /* No more IO - including error messages ! */
1273 PerlIO_cleanup(aTHX);
1274#endif
1275
9f4bd222 1276 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1277 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1278 for no arg - and will try and SvREFCNT_dec it.
1279 */
1280 SvREFCNT(&PL_sv_undef) = 0;
1281 SvREADONLY_off(&PL_sv_undef);
1282
3280af22 1283 Safefree(PL_origfilename);
bd61b366 1284 PL_origfilename = NULL;
3280af22 1285 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1286 PL_reg_start_tmp = (char**)NULL;
1287 PL_reg_start_tmpl = 0;
43c5f42d 1288 Safefree(PL_reg_curpm);
82ba1be6 1289 Safefree(PL_reg_poscache);
dd28f7bb 1290 free_tied_hv_pool();
3280af22 1291 Safefree(PL_op_mask);
cf36064f 1292 Safefree(PL_psig_ptr);
bf9cdc68 1293 PL_psig_ptr = (SV**)NULL;
cf36064f 1294 Safefree(PL_psig_name);
bf9cdc68 1295 PL_psig_name = (SV**)NULL;
2c2666fc 1296 Safefree(PL_bitcount);
bd61b366 1297 PL_bitcount = NULL;
ce08f86c 1298 Safefree(PL_psig_pend);
bf9cdc68 1299 PL_psig_pend = (int*)NULL;
a0714e2c 1300 PL_formfeed = NULL;
6e72f9df 1301 nuke_stacks();
bf9cdc68
RG
1302 PL_tainting = FALSE;
1303 PL_taint_warn = FALSE;
3280af22 1304 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1305 PL_debug = 0;
ac27b0f5 1306
a0d0e21e 1307 DEBUG_P(debprofdump());
d33b2eba 1308
e5dd39fc 1309#ifdef USE_REENTRANT_API
10bc17b6 1310 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1311#endif
1312
612f20c3
GS
1313 sv_free_arenas();
1314
5d9a96ca
DM
1315 while (PL_regmatch_slab) {
1316 regmatch_slab *s = PL_regmatch_slab;
1317 PL_regmatch_slab = PL_regmatch_slab->next;
1318 Safefree(s);
1319 }
1320
fc36a67e
PP
1321 /* As the absolutely last thing, free the non-arena SV for mess() */
1322
3280af22 1323 if (PL_mess_sv) {
f350b448
NC
1324 /* we know that type == SVt_PVMG */
1325
9c63abab 1326 /* it could have accumulated taint magic */
f350b448
NC
1327 MAGIC* mg;
1328 MAGIC* moremagic;
1329 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1330 moremagic = mg->mg_moremagic;
1331 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1332 && mg->mg_len >= 0)
1333 Safefree(mg->mg_ptr);
1334 Safefree(mg);
9c63abab 1335 }
f350b448 1336
fc36a67e 1337 /* we know that type >= SVt_PV */
8bd4d4c5 1338 SvPV_free(PL_mess_sv);
3280af22
NIS
1339 Safefree(SvANY(PL_mess_sv));
1340 Safefree(PL_mess_sv);
a0714e2c 1341 PL_mess_sv = NULL;
fc36a67e 1342 }
37038d91 1343 return STATUS_EXIT;
79072805
LW
1344}
1345
954c1994
GS
1346/*
1347=for apidoc perl_free
1348
1349Releases a Perl interpreter. See L<perlembed>.
1350
1351=cut
1352*/
1353
79072805 1354void
0cb96387 1355perl_free(pTHXx)
79072805 1356{
5174512c
NC
1357 dVAR;
1358
7918f24d
NC
1359 PERL_ARGS_ASSERT_PERL_FREE;
1360
c301d606
DM
1361 if (PL_veto_cleanup)
1362 return;
1363
7cb608b5 1364#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1365 {
1366 /*
1367 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1368 * value as we're probably hunting memory leaks then
1369 */
1370 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1371 if (!s || atoi(s) == 0) {
4fd0a9b8 1372 const U32 old_debug = PL_debug;
55ef9aae
MHM
1373 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1374 thread at thread exit. */
4fd0a9b8
NC
1375 if (DEBUG_m_TEST) {
1376 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1377 "free this thread's memory\n");
1378 PL_debug &= ~ DEBUG_m_FLAG;
1379 }
55ef9aae
MHM
1380 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1381 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1382 PL_debug = old_debug;
55ef9aae
MHM
1383 }
1384 }
7cb608b5
NC
1385#endif
1386
acfe0abc 1387#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1388# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1389 {
acfe0abc 1390# ifdef NETWARE
7af12a34 1391 void *host = nw_internal_host;
acfe0abc 1392# else
7af12a34 1393 void *host = w32_internal_host;
acfe0abc 1394# endif
7af12a34 1395 PerlMem_free(aTHXx);
acfe0abc 1396# ifdef NETWARE
7af12a34 1397 nw_delete_internal_host(host);
acfe0abc 1398# else
7af12a34 1399 win32_delete_internal_host(host);
acfe0abc 1400# endif
7af12a34 1401 }
1c0ca838
GS
1402# else
1403 PerlMem_free(aTHXx);
1404# endif
acfe0abc
GS
1405#else
1406 PerlMem_free(aTHXx);
76e3520e 1407#endif
79072805
LW
1408}
1409
b7f7fff6 1410#if defined(USE_ITHREADS)
aebd1ac7
GA
1411/* provide destructors to clean up the thread key when libperl is unloaded */
1412#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1413
826955bd 1414#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1415#pragma fini "perl_fini"
666ad1ec
GA
1416#elif defined(__sun) && !defined(__GNUC__)
1417#pragma fini (perl_fini)
aebd1ac7
GA
1418#endif
1419
0dbb1585
AL
1420static void
1421#if defined(__GNUC__)
1422__attribute__((destructor))
aebd1ac7 1423#endif
de009b76 1424perl_fini(void)
aebd1ac7 1425{
27da23d5 1426 dVAR;
c301d606 1427 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1428 FREE_THREAD_KEY;
1429}
1430
1431#endif /* WIN32 */
1432#endif /* THREADS */
1433
4b556e6c 1434void
864dbfa3 1435Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1436{
97aff369 1437 dVAR;
3280af22
NIS
1438 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1439 PL_exitlist[PL_exitlistlen].fn = fn;
1440 PL_exitlist[PL_exitlistlen].ptr = ptr;
1441 ++PL_exitlistlen;
4b556e6c
JD
1442}
1443
56cf6df8
RGS
1444#ifdef HAS_PROCSELFEXE
1445/* This is a function so that we don't hold on to MAXPATHLEN
1446 bytes of stack longer than necessary
1447 */
1448STATIC void
e1ec3a88 1449S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1450{
1451 char buf[MAXPATHLEN];
1452 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1453
1454 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1455 includes a spurious NUL which will cause $^X to fail in system
1456 or backticks (this will prevent extensions from being built and
1457 many tests from working). readlink is not meant to add a NUL.
1458 Normal readlink works fine.
1459 */
1460 if (len > 0 && buf[len-1] == '\0') {
1461 len--;
1462 }
1463
1464 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1465 returning the text "unknown" from the readlink rather than the path
1466 to the executable (or returning an error from the readlink). Any valid
1467 path has a '/' in it somewhere, so use that to validate the result.
1468 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1469 */
1470 if (len > 0 && memchr(buf, '/', len)) {
1471 sv_setpvn(sv,buf,len);
1472 }
1473 else {
1474 sv_setpv(sv,arg0);
1475 }
1476}
1477#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1478
1479STATIC void
1480S_set_caret_X(pTHX) {
97aff369 1481 dVAR;
fafc274c 1482 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1483 if (tmpgv) {
1484#ifdef HAS_PROCSELFEXE
1485 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1486#else
1487#ifdef OS2
c69033f2 1488 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1489#else
c69033f2 1490 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1491#endif
1492#endif
1493 }
1494}
1495
954c1994
GS
1496/*
1497=for apidoc perl_parse
1498
1499Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1500
1501=cut
1502*/
1503
79072805 1504int
0cb96387 1505perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1506{
27da23d5 1507 dVAR;
6224f72b 1508 I32 oldscope;
6224f72b 1509 int ret;
db36c5a1 1510 dJMPENV;
8d063cd8 1511
7918f24d
NC
1512 PERL_ARGS_ASSERT_PERL_PARSE;
1513#ifndef MULTIPLICITY
ed6c66dd 1514 PERL_UNUSED_ARG(my_perl);
7918f24d 1515#endif
9d4ba2ae 1516
ec2019ad
NC
1517#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW_AND_IAMSUID
1518 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now "
1519 "execute\nsetuid perl scripts securely.\n");
a687059c
LW
1520#endif
1521
b0891165
JH
1522#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1523 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1524 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1525 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1526 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1527 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1528 if (!PL_rehash_seed_set)
1529 PL_rehash_seed = get_hash_seed();
b0891165 1530 {
9d4ba2ae 1531 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1532
1b6737cc
AL
1533 if (s && (atoi(s) == 1))
1534 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1535 }
1536#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1537
3280af22 1538 PL_origargc = argc;
e2975953 1539 PL_origargv = argv;
a0d0e21e 1540
a2722ac9
GA
1541 if (PL_origalen != 0) {
1542 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1543 }
1544 else {
3cb9023d
JH
1545 /* Set PL_origalen be the sum of the contiguous argv[]
1546 * elements plus the size of the env in case that it is
e9137a8e 1547 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1548 * as the maximum modifiable length of $0. In the worst case
1549 * the area we are able to modify is limited to the size of
43c32782 1550 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1551 * --jhi */
e1ec3a88 1552 const char *s = NULL;
54bfe034 1553 int i;
1b6737cc 1554 const UV mask =
7d8e7db3 1555 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1556 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1557 const UV aligned =
43c32782
JH
1558 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1559
1560 /* See if all the arguments are contiguous in memory. Note
1561 * that 'contiguous' is a loose term because some platforms
1562 * align the argv[] and the envp[]. If the arguments look
1563 * like non-aligned, assume that they are 'strictly' or
1564 * 'traditionally' contiguous. If the arguments look like
1565 * aligned, we just check that they are within aligned
1566 * PTRSIZE bytes. As long as no system has something bizarre
1567 * like the argv[] interleaved with some other data, we are
1568 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1569 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1570 while (*s) s++;
1571 for (i = 1; i < PL_origargc; i++) {
1572 if ((PL_origargv[i] == s + 1
43c32782 1573#ifdef OS2
c8941eeb 1574 || PL_origargv[i] == s + 2
43c32782 1575#endif
c8941eeb
JH
1576 )
1577 ||
1578 (aligned &&
1579 (PL_origargv[i] > s &&
1580 PL_origargv[i] <=
1581 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1582 )
1583 {
1584 s = PL_origargv[i];
1585 while (*s) s++;
1586 }
1587 else
1588 break;
54bfe034 1589 }
54bfe034 1590 }
a4a109c2
JD
1591
1592#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1593 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1594 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1595 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1596 ||
1597 (aligned &&
1598 (PL_origenviron[0] > s &&
1599 PL_origenviron[0] <=
1600 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1601 )
1602 {
9d419b5f 1603#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1604 s = PL_origenviron[0];
1605 while (*s) s++;
1606#endif
bd61b366 1607 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1608 /* Force copy of environment. */
1609 for (i = 1; PL_origenviron[i]; i++) {
1610 if (PL_origenviron[i] == s + 1
1611 ||
1612 (aligned &&
1613 (PL_origenviron[i] > s &&
1614 PL_origenviron[i] <=
1615 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1616 )
1617 {
1618 s = PL_origenviron[i];
1619 while (*s) s++;
1620 }
1621 else
1622 break;
54bfe034 1623 }
43c32782 1624 }
54bfe034 1625 }
a4a109c2
JD
1626#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1627
2d2af554 1628 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1629 }
1630
3280af22 1631 if (PL_do_undump) {
a0d0e21e
LW
1632
1633 /* Come here if running an undumped a.out. */
1634
3280af22
NIS
1635 PL_origfilename = savepv(argv[0]);
1636 PL_do_undump = FALSE;
a0d0e21e 1637 cxstack_ix = -1; /* start label stack again */
748a9306 1638 init_ids();
b7975bdd
NC
1639 assert (!PL_tainted);
1640 TAINT;
1641 S_set_caret_X(aTHX);
1642 TAINT_NOT;
a0d0e21e
LW
1643 init_postdump_symbols(argc,argv,env);
1644 return 0;
1645 }
1646
3280af22 1647 if (PL_main_root) {
3280af22 1648 op_free(PL_main_root);
5f66b61c 1649 PL_main_root = NULL;
ff0cee69 1650 }
5f66b61c 1651 PL_main_start = NULL;
3280af22 1652 SvREFCNT_dec(PL_main_cv);
601f1833 1653 PL_main_cv = NULL;
79072805 1654
3280af22
NIS
1655 time(&PL_basetime);
1656 oldscope = PL_scopestack_ix;
599cee73 1657 PL_dowarn = G_WARN_OFF;
f86702cc 1658
14dd3ad8 1659 JMPENV_PUSH(ret);
6224f72b 1660 switch (ret) {
312caa8e 1661 case 0:
14dd3ad8 1662 parse_body(env,xsinit);
3c10abe3
AG
1663 if (PL_unitcheckav)
1664 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1665 if (PL_checkav)
1666 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1667 ret = 0;
1668 break;
6224f72b
GS
1669 case 1:
1670 STATUS_ALL_FAILURE;
1671 /* FALL THROUGH */
1672 case 2:
1673 /* my_exit() was called */
3280af22 1674 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1675 LEAVE;
1676 FREETMPS;
3280af22 1677 PL_curstash = PL_defstash;
3c10abe3
AG
1678 if (PL_unitcheckav)
1679 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1680 if (PL_checkav)
1681 call_list(oldscope, PL_checkav);
37038d91 1682 ret = STATUS_EXIT;
14dd3ad8 1683 break;
6224f72b 1684 case 3:
bf49b057 1685 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1686 ret = 1;
1687 break;
6224f72b 1688 }
14dd3ad8
GS
1689 JMPENV_POP;
1690 return ret;
1691}
1692
312caa8e 1693STATIC void *
14dd3ad8 1694S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1695{
27da23d5 1696 dVAR;
2f9285f8 1697 PerlIO *rsfp;
312caa8e 1698 int argc = PL_origargc;
8f42b153 1699 char **argv = PL_origargv;
e1ec3a88 1700 const char *scriptname = NULL;
312caa8e 1701 VOL bool dosearch = FALSE;
829372d3 1702#ifdef DOSUID
e1ec3a88 1703 const char *validarg = "";
829372d3 1704#endif
312caa8e 1705 register SV *sv;
c7030b81 1706 register char c;
bd61b366 1707 const char *cddir = NULL;
ab019eaa 1708#ifdef USE_SITECUSTOMIZE
20ef40cf 1709 bool minus_f = FALSE;
ab019eaa 1710#endif
009d90df 1711 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1712 bool add_read_e_script = FALSE;
009d90df
DM
1713
1714 SvGROW(linestr_sv, 80);
1715 sv_setpvn(linestr_sv,"",0);
312caa8e 1716
396482e1 1717 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1718 SAVEFREESV(sv);
1719 init_main_stash();
54310121 1720
c7030b81
NC
1721 {
1722 const char *s;
6224f72b
GS
1723 for (argc--,argv++; argc > 0; argc--,argv++) {
1724 if (argv[0][0] != '-' || !argv[0][1])
1725 break;
1726#ifdef DOSUID
1727 if (*validarg)
1728 validarg = " PHOOEY ";
1729 else
1730 validarg = argv[0];
ae3f3efd
PS
1731 /*
1732 * Can we rely on the kernel to start scripts with argv[1] set to
1733 * contain all #! line switches (the whole line)? (argv[0] is set to
1734 * the interpreter name, argv[2] to the script name; argv[3] and
1735 * above may contain other arguments.)
1736 */
13281fa4 1737#endif
6224f72b
GS
1738 s = argv[0]+1;
1739 reswitch:
47f56822 1740 switch ((c = *s)) {
729a02f2 1741 case 'C':
1d5472a9
GS
1742#ifndef PERL_STRICT_CR
1743 case '\r':
1744#endif
6224f72b
GS
1745 case ' ':
1746 case '0':
1747 case 'F':
1748 case 'a':
1749 case 'c':
1750 case 'd':
1751 case 'D':
1752 case 'h':
1753 case 'i':
1754 case 'l':
1755 case 'M':
1756 case 'm':
1757 case 'n':
1758 case 'p':
1759 case 's':
1760 case 'u':
1761 case 'U':
1762 case 'v':
599cee73
PM
1763 case 'W':
1764 case 'X':
6224f72b 1765 case 'w':
97bd5664 1766 if ((s = moreswitches(s)))
6224f72b
GS
1767 goto reswitch;
1768 break;
33b78306 1769
1dbad523 1770 case 't':
22f7c9c9 1771 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1772 if( !PL_tainting ) {
1773 PL_taint_warn = TRUE;
1774 PL_tainting = TRUE;
1775 }
1776 s++;
1777 goto reswitch;
6224f72b 1778 case 'T':
22f7c9c9 1779 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1780 PL_tainting = TRUE;
317ea90d 1781 PL_taint_warn = FALSE;
6224f72b
GS
1782 s++;
1783 goto reswitch;
f86702cc 1784
bc9b29db
RH
1785 case 'E':
1786 PL_minus_E = TRUE;
1787 /* FALL THROUGH */
6224f72b 1788 case 'e':
bf4acbe4
GS
1789#ifdef MACOS_TRADITIONAL
1790 /* ignore -e for Dev:Pseudo argument */
1791 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1792 break;
bf4acbe4 1793#endif
f20b2998 1794 forbid_setid('e', FALSE);
3280af22 1795 if (!PL_e_script) {
396482e1 1796 PL_e_script = newSVpvs("");
5486870f 1797 add_read_e_script = TRUE;
6224f72b
GS
1798 }
1799 if (*++s)
3280af22 1800 sv_catpv(PL_e_script, s);
6224f72b 1801 else if (argv[1]) {
3280af22 1802 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1803 argc--,argv++;
1804 }
1805 else
47f56822 1806 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1807 sv_catpvs(PL_e_script, "\n");
6224f72b 1808 break;
afe37c7d 1809
20ef40cf 1810 case 'f':
f5542d3a 1811#ifdef USE_SITECUSTOMIZE
20ef40cf 1812 minus_f = TRUE;
f5542d3a 1813#endif
20ef40cf
GA
1814 s++;
1815 goto reswitch;
1816
6224f72b 1817 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1818 forbid_setid('I', FALSE);
bd61b366 1819 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1820 argc--,argv++;
1821 }
6224f72b 1822 if (s && *s) {
0df16ed7 1823 STRLEN len = strlen(s);
aec46f14 1824 const char * const p = savepvn(s, len);
88fe16b2 1825 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1826 sv_catpvs(sv, "-I");
0df16ed7 1827 sv_catpvn(sv, p, len);
396482e1 1828 sv_catpvs(sv, " ");
6224f72b 1829 Safefree(p);
0df16ed7
GS
1830 }
1831 else
a67e862a 1832 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1833 break;
6224f72b 1834 case 'S':
f20b2998 1835 forbid_setid('S', FALSE);
6224f72b
GS
1836 dosearch = TRUE;
1837 s++;
1838 goto reswitch;
1839 case 'V':
7edfd0ef
NC
1840 {
1841 SV *opts_prog;
1842
29a861e7 1843 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
7edfd0ef 1844 if (*++s != ':') {
389d73ad
NC
1845 /* Can't do newSVpvs() as that would involve pre-processor
1846 condititionals inside a macro expansion. */
1847 opts_prog = Perl_newSVpv(aTHX_ "$_ = join ' ', sort qw("
6224f72b 1848# ifdef DEBUGGING
e2e4dbf1 1849 " DEBUGGING"
6224f72b 1850# endif
3bcf5ed8
SP
1851# ifdef NO_MATHOMS
1852 " NO_MATHOMS"
1853# endif
85e1fcb9 1854# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1855 " PERL_DONT_CREATE_GVSV"
85e1fcb9 1856# endif
85e1fcb9 1857# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1858 " PERL_MALLOC_WRAP"
85e1fcb9 1859# endif
4724db38
NC
1860# ifdef PERL_MEM_LOG
1861 " PERL_MEM_LOG"
1862# endif
1863# ifdef PERL_MEM_LOG_ENV
1864 " PERL_MEM_LOG_ENV"
1865# endif
1866# ifdef PERL_MEM_LOG_ENV_FD
1867 " PERL_MEM_LOG_ENV_FD"
1868# endif
1869# ifdef PERL_MEM_LOG_STDERR
1870 " PERL_MEM_LOG_STDERR"
1871# endif
1872# ifdef PERL_MEM_LOG_TIMESTAMP
1873 " PERL_MEM_LOG_TIMESTAMP"
1874# endif
417cd4a8
SP
1875# ifdef PERL_USE_SAFE_PUTENV
1876 " PERL_USE_SAFE_PUTENV"
1877# endif
20ef40cf 1878# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1879 " USE_SITECUSTOMIZE"
20ef40cf 1880# endif
389d73ad 1881 , 0);
efcaa95b 1882
b75885fd 1883 sv_catpv(opts_prog, PL_bincompat_options);
389d73ad
NC
1884 /* Terminate the qw(, and then wrap at 76 columns. */
1885 sv_catpvs(opts_prog, "); s/(?=.{53})(.{1,53}) /$1\\n /mg;print Config::myconfig(),");
1886#ifdef VMS
1887 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n");
1888#else
1889 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n");
1890#endif
efcaa95b 1891
389d73ad 1892 sv_catpvs(opts_prog," Compile-time options: $_\\n\",");
b363f7ed 1893
6224f72b 1894#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1895 if (LOCAL_PATCH_COUNT > 0) {
1896 int i;
396482e1 1897 sv_catpvs(opts_prog,
7edfd0ef
NC
1898 "\" Locally applied patches:\\n\",");
1899 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1900 if (PL_localpatches[i])
1901 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1902 0, PL_localpatches[i], 0);
1903 }
6224f72b 1904 }
6224f72b 1905#endif
7edfd0ef 1906 Perl_sv_catpvf(aTHX_ opts_prog,
758ce194 1907 "\" Built under %s\\n",OSNAME);
6224f72b
GS
1908#ifdef __DATE__
1909# ifdef __TIME__
895aa832
NC
1910 sv_catpvs(opts_prog,
1911 " Compiled at " __DATE__ " " __TIME__ "\\n\"");
6224f72b 1912# else
895aa832 1913 sv_catpvs(opts_prog, " Compiled on " __DATE__ "\\n\"");
6224f72b
GS
1914# endif
1915#endif
396482e1 1916 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1917 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1918 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1919#ifdef __CYGWIN__
396482e1 1920 sv_catpvs(opts_prog,
7edfd0ef 1921 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1922#endif
396482e1 1923 sv_catpvs(opts_prog,
7edfd0ef
NC
1924 "print \" \\%ENV:\\n @env\\n\" if @env;"
1925 "print \" \\@INC:\\n @INC\\n\";");
1926 }
1927 else {
1928 ++s;
1929 opts_prog = Perl_newSVpvf(aTHX_
1930 "Config::config_vars(qw%c%s%c)",
1931 0, s, 0);
1932 s += strlen(s);
1933 }
1934 av_push(PL_preambleav, opts_prog);
1935 /* don't look for script or read stdin */
1936 scriptname = BIT_BUCKET;
1937 goto reswitch;
6224f72b 1938 }
6224f72b 1939 case 'x':
3280af22 1940 PL_doextract = TRUE;
6224f72b 1941 s++;
304334da 1942 if (*s)
f4c556ac 1943 cddir = s;
6224f72b
GS
1944 break;
1945 case 0:
1946 break;
1947 case '-':
1948 if (!*++s || isSPACE(*s)) {
1949 argc--,argv++;
1950 goto switch_end;
1951 }
1952 /* catch use of gnu style long options */
1953 if (strEQ(s, "version")) {
dd374669 1954 s = (char *)"v";
6224f72b
GS
1955 goto reswitch;
1956 }
1957 if (strEQ(s, "help")) {
dd374669 1958 s = (char *)"h";
6224f72b
GS
1959 goto reswitch;
1960 }
1961 s--;
1962 /* FALL THROUGH */
1963 default:
cea2e8a9 1964 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1965 }
1966 }
c7030b81
NC
1967 }
1968
6224f72b 1969 switch_end:
54310121 1970
c7030b81
NC
1971 {
1972 char *s;
1973
f675dbe5
CB
1974 if (
1975#ifndef SECURE_INTERNAL_GETENV
1976 !PL_tainting &&
1977#endif
cf756827 1978 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1979 {
74288ac8
GS
1980 while (isSPACE(*s))
1981 s++;
317ea90d 1982 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1983 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1984 PL_tainting = TRUE;
317ea90d
MS
1985 PL_taint_warn = FALSE;
1986 }
74288ac8 1987 else {
bd61b366 1988 char *popt_copy = NULL;
74288ac8 1989 while (s && *s) {
54913509 1990 const char *d;
74288ac8
GS
1991 while (isSPACE(*s))
1992 s++;
1993 if (*s == '-') {
1994 s++;
1995 if (isSPACE(*s))
1996 continue;
1997 }
4ea8f8fb 1998 d = s;
74288ac8
GS
1999 if (!*s)
2000 break;
f0d36289 2001 if (!strchr("CDIMUdmtw", *s))
cea2e8a9 2002 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2003 while (++s && *s) {
2004 if (isSPACE(*s)) {
cf756827 2005 if (!popt_copy) {
bfa6c418
NC
2006 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2007 s = popt_copy + (s - d);
2008 d = popt_copy;
cf756827 2009 }
4ea8f8fb
MS
2010 *s++ = '\0';
2011 break;
2012 }
2013 }
1c4db469 2014 if (*d == 't') {
317ea90d
MS
2015 if( !PL_tainting ) {
2016 PL_taint_warn = TRUE;
2017 PL_tainting = TRUE;
2018 }
1c4db469 2019 } else {
97bd5664 2020 moreswitches(d);
1c4db469 2021 }
6224f72b 2022 }
6224f72b
GS
2023 }
2024 }
c7030b81 2025 }
a0d0e21e 2026
20ef40cf
GA
2027#ifdef USE_SITECUSTOMIZE
2028 if (!minus_f) {
29a861e7
NC
2029 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2030 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
20ef40cf
GA
2031 }
2032#endif
2033
6224f72b
GS
2034 if (!scriptname)
2035 scriptname = argv[0];
3280af22 2036 if (PL_e_script) {
6224f72b
GS
2037 argc++,argv--;
2038 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2039 }
bd61b366 2040 else if (scriptname == NULL) {
6224f72b
GS
2041#ifdef MSDOS
2042 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2043 moreswitches("h");
6224f72b
GS
2044#endif
2045 scriptname = "-";
2046 }
2047
b7975bdd
NC
2048 /* Set $^X early so that it can be used for relocatable paths in @INC */
2049 assert (!PL_tainted);
2050 TAINT;
2051 S_set_caret_X(aTHX);
2052 TAINT_NOT;
6224f72b
GS
2053 init_perllib();
2054
a52eba0e 2055 {
f20b2998 2056 bool suidscript = FALSE;
829372d3
NC
2057
2058#ifdef DOSUID
2059 const int fdscript =
2060#endif
2061 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2062
2f9285f8
DM
2063 validate_suid(validarg, scriptname, fdscript, suidscript,
2064 linestr_sv, rsfp);
6224f72b 2065
64ca3a65 2066#ifndef PERL_MICRO
a52eba0e
NC
2067# if defined(SIGCHLD) || defined(SIGCLD)
2068 {
2069# ifndef SIGCHLD
2070# define SIGCHLD SIGCLD
2071# endif
2072 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2073 if (sigstate == (Sighandler_t) SIG_IGN) {
2074 if (ckWARN(WARN_SIGNAL))
2075 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2076 "Can't ignore signal CHLD, forcing to default");
2077 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2078 }
0b5b802d 2079 }
a52eba0e 2080# endif
64ca3a65 2081#endif
0b5b802d 2082
a52eba0e 2083 if (PL_doextract
bf4acbe4 2084#ifdef MACOS_TRADITIONAL
a52eba0e 2085 || gMacPerl_AlwaysExtract
bf4acbe4 2086#endif
a52eba0e 2087 ) {
faef540c 2088
f20b2998 2089 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2090 setuid scripts. */
2091 forbid_setid('x', suidscript);
f20b2998 2092 /* Hence you can't get here if suidscript is true */
faef540c 2093
2f9285f8 2094 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2095 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2096 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2097 }
f4c556ac 2098 }
6224f72b 2099
b9f83d2f 2100 PL_main_cv = PL_compcv = (CV*)newSV_type(SVt_PVCV);
3280af22
NIS
2101 CvUNIQUE_on(PL_compcv);
2102
dd2155a4 2103 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2104
dd69841b
BB
2105 PL_isarev = newHV();
2106
0c4f7ff0 2107 boot_core_PerlIO();
6224f72b 2108 boot_core_UNIVERSAL();
09bef843 2109 boot_core_xsutils();
e1a479c5 2110 boot_core_mro();
6224f72b
GS
2111
2112 if (xsinit)
acfe0abc 2113 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2114#ifndef PERL_MICRO
d0d72822 2115#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2116 init_os_extras();
6224f72b 2117#endif
64ca3a65 2118#endif
6224f72b 2119
29209bc5 2120#ifdef USE_SOCKS
1b9c9cf5
DH
2121# ifdef HAS_SOCKS5_INIT
2122 socks5_init(argv[0]);
2123# else
29209bc5 2124 SOCKSinit(argv[0]);
1b9c9cf5 2125# endif
ac27b0f5 2126#endif
29209bc5 2127
6224f72b
GS
2128 init_predump_symbols();
2129 /* init_postdump_symbols not currently designed to be called */
2130 /* more than once (ENV isn't cleared first, for example) */
2131 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2132 if (!PL_do_undump)
6224f72b
GS
2133 init_postdump_symbols(argc,argv,env);
2134
27da23d5
JH
2135 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2136 * or explicitly in some platforms.
085a54d9 2137 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2138 * look like the user wants to use UTF-8. */
a0fd4948 2139#if defined(__SYMBIAN32__)
27da23d5
JH
2140 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2141#endif
06e66572
JH
2142 if (PL_unicode) {
2143 /* Requires init_predump_symbols(). */
a05d7ebb 2144 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2145 IO* io;
2146 PerlIO* fp;
2147 SV* sv;
2148
a05d7ebb 2149 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2150 * and the default open disciplines. */
a05d7ebb
JH
2151 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2152 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2153 (fp = IoIFP(io)))
2154 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2155 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2156 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2157 (fp = IoOFP(io)))
2158 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2159 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2160 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2161 (fp = IoOFP(io)))
2162 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2163 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2164 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2165 SVt_PV)))) {
a05d7ebb
JH
2166 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2167 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2168 if (in) {
2169 if (out)
2170 sv_setpvn(sv, ":utf8\0:utf8", 11);
2171 else
2172 sv_setpvn(sv, ":utf8\0", 6);
2173 }
2174 else if (out)
2175 sv_setpvn(sv, "\0:utf8", 6);
2176 SvSETMAGIC(sv);
2177 }
b310b053
JH
2178 }
2179 }
2180
c7030b81
NC
2181 {
2182 const char *s;
4ffa73a3
JH
2183 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2184 if (strEQ(s, "unsafe"))
2185 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2186 else if (strEQ(s, "safe"))
2187 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2188 else
2189 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2190 }
c7030b81 2191 }
4ffa73a3 2192
81d86705 2193#ifdef PERL_MAD
c7030b81
NC
2194 {
2195 const char *s;
81d86705
NC
2196 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2197 PL_madskills = 1;
2198 PL_minus_c = 1;
2199 if (!s || !s[0])
2200 PL_xmlfp = PerlIO_stdout();
2201 else {
2202 PL_xmlfp = PerlIO_open(s, "w");
2203 if (!PL_xmlfp)
2204 Perl_croak(aTHX_ "Can't open %s", s);
2205 }
1a9a51d4 2206 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2207 }
c7030b81
NC
2208 }
2209
2210 {
2211 const char *s;
81d86705
NC
2212 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2213 PL_madskills = atoi(s);
1a9a51d4 2214 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2215 }
c7030b81 2216 }
81d86705
NC
2217#endif
2218
5486870f 2219 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2220 PL_subname = newSVpvs("main");
6224f72b 2221
5486870f
DM
2222 if (add_read_e_script)
2223 filter_add(read_e_script, NULL);
2224
6224f72b
GS
2225 /* now parse the script */
2226
93189314 2227 SETERRNO(0,SS_NORMAL);
bf4acbe4 2228#ifdef MACOS_TRADITIONAL
13765c85 2229 if (gMacPerl_SyntaxError = (yyparse() || PL_parser->error_count)) {
bf4acbe4
GS
2230 if (PL_minus_c)
2231 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2232 else {
2233 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2234 MacPerl_MPWFileName(PL_origfilename));
2235 }
2236 }
2237#else
13765c85 2238 if (yyparse() || PL_parser->error_count) {
3280af22 2239 if (PL_minus_c)
cea2e8a9 2240 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2241 else {
cea2e8a9 2242 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2243 PL_origfilename);
6224f72b
GS
2244 }
2245 }
bf4acbe4 2246#endif
57843af0 2247 CopLINE_set(PL_curcop, 0);
3280af22 2248 PL_curstash = PL_defstash;
3280af22
NIS
2249 if (PL_e_script) {
2250 SvREFCNT_dec(PL_e_script);
a0714e2c 2251 PL_e_script = NULL;
6224f72b
GS
2252 }
2253
3280af22 2254 if (PL_do_undump)
6224f72b
GS
2255 my_unexec();
2256
57843af0
GS
2257 if (isWARN_ONCE) {
2258 SAVECOPFILE(PL_curcop);
2259 SAVECOPLINE(PL_curcop);
3280af22 2260 gv_check(PL_defstash);
57843af0 2261 }
6224f72b
GS
2262
2263 LEAVE;
2264 FREETMPS;
2265
2266#ifdef MYMALLOC
f6a607bc
RGS
2267 {
2268 const char *s;
6224f72b
GS
2269 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2270 dump_mstats("after compilation:");
f6a607bc 2271 }
6224f72b
GS
2272#endif
2273
2274 ENTER;
3280af22 2275 PL_restartop = 0;
312caa8e 2276 return NULL;
6224f72b
GS
2277}
2278
954c1994
GS
2279/*
2280=for apidoc perl_run
2281
2282Tells a Perl interpreter to run. See L<perlembed>.
2283
2284=cut
2285*/
2286
6224f72b 2287int
0cb96387 2288perl_run(pTHXx)
6224f72b 2289{
97aff369 2290 dVAR;
6224f72b 2291 I32 oldscope;
14dd3ad8 2292 int ret = 0;
db36c5a1 2293 dJMPENV;
6224f72b 2294
7918f24d
NC
2295 PERL_ARGS_ASSERT_PERL_RUN;
2296#ifndef MULTIPLICITY
ed6c66dd 2297 PERL_UNUSED_ARG(my_perl);
7918f24d 2298#endif
9d4ba2ae 2299
3280af22 2300 oldscope = PL_scopestack_ix;
96e176bf
CL
2301#ifdef VMS
2302 VMSISH_HUSHED = 0;
2303#endif
6224f72b 2304
14dd3ad8 2305 JMPENV_PUSH(ret);
6224f72b
GS
2306 switch (ret) {
2307 case 1:
2308 cxstack_ix = -1; /* start context stack again */
312caa8e 2309 goto redo_body;
14dd3ad8 2310 case 0: /* normal completion */
14dd3ad8
GS
2311 redo_body:
2312 run_body(oldscope);
14dd3ad8
GS
2313 /* FALL THROUGH */
2314 case 2: /* my_exit() */
3280af22 2315 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2316 LEAVE;
2317 FREETMPS;
3280af22 2318 PL_curstash = PL_defstash;
3a1ee7e8 2319 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2320 PL_endav && !PL_minus_c)
2321 call_list(oldscope, PL_endav);
6224f72b
GS
2322#ifdef MYMALLOC
2323 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2324 dump_mstats("after execution: ");
2325#endif
37038d91 2326 ret = STATUS_EXIT;
14dd3ad8 2327 break;
6224f72b 2328 case 3:
312caa8e
CS
2329 if (PL_restartop) {
2330 POPSTACK_TO(PL_mainstack);
2331 goto redo_body;
6224f72b 2332 }
bf49b057 2333 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2334 FREETMPS;
14dd3ad8
GS
2335 ret = 1;
2336 break;
6224f72b
GS
2337 }
2338
14dd3ad8
GS
2339 JMPENV_POP;
2340 return ret;
312caa8e
CS
2341}
2342
dd374669 2343STATIC void
14dd3ad8
GS
2344S_run_body(pTHX_ I32 oldscope)
2345{
97aff369 2346 dVAR;
6224f72b 2347 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2348 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2349
3280af22 2350 if (!PL_restartop) {
81d86705
NC
2351#ifdef PERL_MAD
2352 if (PL_xmlfp) {
2353 xmldump_all();
2354 exit(0); /* less likely to core dump than my_exit(0) */
2355 }
2356#endif
6224f72b 2357 DEBUG_x(dump_all());
cf2782cd 2358#ifdef DEBUGGING
ecae49c0
NC
2359 if (!DEBUG_q_TEST)
2360 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2361#endif
6224f72b 2362
3280af22 2363 if (PL_minus_c) {
bf4acbe4 2364#ifdef MACOS_TRADITIONAL
e69a2255
JH
2365 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2366 (gMacPerl_ErrorFormat ? "# " : ""),
2367 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2368#else
bf49b057 2369 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2370#endif
6224f72b
GS
2371 my_exit(0);
2372 }
3280af22 2373 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2374 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2375 if (PL_initav)
2376 call_list(oldscope, PL_initav);
f1fac472
NC
2377#ifdef PERL_DEBUG_READONLY_OPS
2378 Perl_pending_Slabs_to_ro(aTHX);
2379#endif
6224f72b
GS
2380 }
2381
2382 /* do it */
2383
3280af22 2384 if (PL_restartop) {
533c011a 2385 PL_op = PL_restartop;
3280af22 2386 PL_restartop = 0;
cea2e8a9 2387 CALLRUNOPS(aTHX);
6224f72b 2388 }
3280af22
NIS
2389 else if (PL_main_start) {
2390 CvDEPTH(PL_main_cv) = 1;
533c011a 2391 PL_op = PL_main_start;
cea2e8a9 2392 CALLRUNOPS(aTHX);
6224f72b 2393 }
f6b3007c
JH
2394 my_exit(0);
2395 /* NOTREACHED */
6224f72b
GS
2396}
2397
954c1994 2398/*
ccfc67b7
JH
2399=head1 SV Manipulation Functions
2400
954c1994
GS
2401=for apidoc p||get_sv
2402
2403Returns the SV of the specified Perl scalar. If C<create> is set and the
2404Perl variable does not exist then it will be created. If C<create> is not
2405set and the variable does not exist then NULL is returned.
2406
2407=cut
2408*/
2409
6224f72b 2410SV*
864dbfa3 2411Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2412{
2413 GV *gv;
7918f24d
NC
2414
2415 PERL_ARGS_ASSERT_GET_SV;
2416
6224f72b
GS
2417 gv = gv_fetchpv(name, create, SVt_PV);
2418 if (gv)
2419 return GvSV(gv);
a0714e2c 2420 return NULL;
6224f72b
GS
2421}
2422
954c1994 2423/*
ccfc67b7
JH
2424=head1 Array Manipulation Functions
2425
954c1994
GS
2426=for apidoc p||get_av
2427
2428Returns the AV of the specified Perl array. If C<create> is set and the
2429Perl variable does not exist then it will be created. If C<create> is not
2430set and the variable does not exist then NULL is returned.
2431
2432=cut
2433*/
2434
6224f72b 2435AV*
864dbfa3 2436Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2437{
c4420975 2438 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
7918f24d
NC
2439
2440 PERL_ARGS_ASSERT_GET_AV;
2441
6224f72b
GS
2442 if (create)
2443 return GvAVn(gv);
2444 if (gv)
2445 return GvAV(gv);
7d49f689 2446 return NULL;
6224f72b
GS
2447}
2448
954c1994 2449/*
ccfc67b7
JH
2450=head1 Hash Manipulation Functions
2451
954c1994
GS
2452=for apidoc p||get_hv
2453
2454Returns the HV of the specified Perl hash. If C<create> is set and the
2455Perl variable does not exist then it will be created. If C<create> is not
2456set and the variable does not exist then NULL is returned.
2457
2458=cut
2459*/
2460
6224f72b 2461HV*
864dbfa3 2462Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2463{
890ce7af 2464 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
7918f24d
NC
2465
2466 PERL_ARGS_ASSERT_GET_HV;
2467
a0d0e21e
LW
2468 if (create)
2469 return GvHVn(gv);
2470 if (gv)
2471 return GvHV(gv);
5c284bb0 2472 return NULL;
a0d0e21e
LW
2473}
2474
954c1994 2475/*
ccfc67b7
JH
2476=head1 CV Manipulation Functions
2477
780a5241
NC
2478=for apidoc p||get_cvn_flags
2479
2480Returns the CV of the specified Perl subroutine. C<flags> are passed to
2481C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2482exist then it will be declared (which has the same effect as saying
2483C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2484then NULL is returned.
2485
954c1994
GS
2486=for apidoc p||get_cv
2487
780a5241 2488Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2489
2490=cut
2491*/
2492
a0d0e21e 2493CV*
780a5241 2494Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2495{
780a5241 2496 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2497 /* XXX this is probably not what they think they're getting.
2498 * It has the same effect as "sub name;", i.e. just a forward
2499 * declaration! */
7918f24d
NC
2500
2501 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2502
780a5241 2503 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2504 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2505 return newSUB(start_subparse(FALSE, 0),
780a5241 2506 newSVOP(OP_CONST, 0, sv),
5f66b61c 2507 NULL, NULL);
780a5241 2508 }
a0d0e21e 2509 if (gv)
8ebc5c01 2510 return GvCVu(gv);
601f1833 2511 return NULL;
a0d0e21e
LW
2512}
2513
780a5241
NC
2514CV*
2515Perl_get_cv(pTHX_ const char *name, I32 flags)
2516{
7918f24d
NC
2517 PERL_ARGS_ASSERT_GET_CV;
2518
780a5241
NC
2519 return get_cvn_flags(name, strlen(name), flags);
2520}
2521
79072805
LW
2522/* Be sure to refetch the stack pointer after calling these routines. */
2523
954c1994 2524/*
ccfc67b7
JH
2525
2526=head1 Callback Functions
2527
954c1994
GS
2528=for apidoc p||call_argv
2529
2530Performs a callback to the specified Perl sub. See L<perlcall>.
2531
2532=cut
2533*/
2534
a0d0e21e 2535I32
8f42b153 2536Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2537
8ac85365
NIS
2538 /* See G_* flags in cop.h */
2539 /* null terminated arg list */
8990e307 2540{
97aff369 2541 dVAR;
a0d0e21e 2542 dSP;
8990e307 2543
7918f24d
NC
2544 PERL_ARGS_ASSERT_CALL_ARGV;
2545
924508f0 2546 PUSHMARK(SP);
a0d0e21e 2547 if (argv) {
8990e307 2548 while (*argv) {
6e449a3a 2549 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2550 argv++;
2551 }
a0d0e21e 2552 PUTBACK;
8990e307 2553 }
864dbfa3 2554 return call_pv(sub_name, flags);
8990e307
LW
2555}
2556
954c1994
GS
2557/*
2558=for apidoc p||call_pv
2559
2560Performs a callback to the specified Perl sub. See L<perlcall>.
2561
2562=cut
2563*/
2564
a0d0e21e 2565I32
864dbfa3 2566Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2567 /* name of the subroutine */
2568 /* See G_* flags in cop.h */
a0d0e21e 2569{
7918f24d
NC
2570 PERL_ARGS_ASSERT_CALL_PV;
2571
864dbfa3 2572 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2573}
2574
954c1994
GS
2575/*
2576=for apidoc p||call_method
2577
2578Performs a callback to the specified Perl method. The blessed object must
2579be on the stack. See L<perlcall>.
2580
2581=cut
2582*/
2583
a0d0e21e 2584I32
864dbfa3 2585Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2586 /* name of the subroutine */
2587 /* See G_* flags in cop.h */
a0d0e21e 2588{
7918f24d
NC
2589 PERL_ARGS_ASSERT_CALL_METHOD;
2590
968b3946 2591 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2592}
2593
2594/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2595/*
2596=for apidoc p||call_sv
2597
2598Performs a callback to the Perl sub whose name is in the SV. See
2599L<perlcall>.
2600
2601=cut
2602*/
2603
a0d0e21e 2604I32
001d637e 2605Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2606 /* See G_* flags in cop.h */
a0d0e21e 2607{
27da23d5 2608 dVAR; dSP;
a0d0e21e 2609 LOGOP myop; /* fake syntax tree node */
968b3946 2610 UNOP method_op;
aa689395 2611 I32 oldmark;
8ea43dc8 2612 VOL I32 retval = 0;
a0d0e21e 2613 I32 oldscope;
54310121 2614 bool oldcatch = CATCH_GET;
6224f72b 2615 int ret;
c4420975 2616 OP* const oldop = PL_op;
db36c5a1 2617 dJMPENV;
1e422769 2618
7918f24d
NC
2619 PERL_ARGS_ASSERT_CALL_SV;
2620
a0d0e21e
LW
2621 if (flags & G_DISCARD) {
2622 ENTER;
2623 SAVETMPS;
2624 }
2f8edad0
NC
2625 if (!(flags & G_WANT)) {
2626 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2627 */
2628 flags |= G_SCALAR;
2629 }
a0d0e21e 2630
aa689395 2631 Zero(&myop, 1, LOGOP);
5f66b61c 2632 myop.op_next = NULL;
f51d4af5 2633 if (!(flags & G_NOARGS))
aa689395 2634 myop.op_flags |= OPf_STACKED;
4f911530 2635 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2636 SAVEOP();
533c011a 2637 PL_op = (OP*)&myop;
aa689395 2638
3280af22
NIS
2639 EXTEND(PL_stack_sp, 1);
2640 *++PL_stack_sp = sv;
aa689395 2641 oldmark = TOPMARK;
3280af22 2642 oldscope = PL_scopestack_ix;
a0d0e21e 2643
3280af22 2644 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2645 /* Handle first BEGIN of -d. */
3280af22 2646 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2647 /* Try harder, since this may have been a sighandler, thus
2648 * curstash may be meaningless. */
3280af22 2649 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2650 && !(flags & G_NODEBUG))
533c011a 2651 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2652
968b3946
GS
2653 if (flags & G_METHOD) {
2654 Zero(&method_op, 1, UNOP);
2655 method_op.op_next = PL_op;
2656 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2657 method_op.op_type = OP_METHOD;
968b3946 2658 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2659 myop.op_type = OP_ENTERSUB;
f39d0b86 2660 PL_op = (OP*)&method_op;
968b3946
GS
2661 }
2662
312caa8e 2663 if (!(flags & G_EVAL)) {
0cdb2077 2664 CATCH_SET(TRUE);
d6f07c05 2665 CALL_BODY_SUB((OP*)&myop);
312caa8e 2666 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2667 CATCH_SET(oldcatch);
312caa8e
CS
2668 }
2669 else {
d78bda3d 2670 myop.op_other = (OP*)&myop;
3280af22 2671 PL_markstack_ptr--;
edb2152a 2672 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2673 PL_markstack_ptr++;
a0d0e21e 2674
14dd3ad8 2675 JMPENV_PUSH(ret);
edb2152a 2676
6224f72b
GS
2677 switch (ret) {
2678 case 0:
14dd3ad8 2679 redo_body:
d6f07c05 2680 CALL_BODY_SUB((OP*)&myop);
312caa8e 2681 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2682 if (!(flags & G_KEEPERR)) {
ab69dbc2 2683 CLEAR_ERRSV();
8433848b 2684 }
a0d0e21e 2685 break;
6224f72b 2686 case 1:
f86702cc 2687 STATUS_ALL_FAILURE;
a0d0e21e 2688 /* FALL THROUGH */
6224f72b 2689 case 2:
a0d0e21e 2690 /* my_exit() was called */
3280af22 2691 PL_curstash = PL_defstash;
a0d0e21e 2692 FREETMPS;
14dd3ad8 2693 JMPENV_POP;
cc3604b1 2694 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2695 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2696 my_exit_jump();
a0d0e21e 2697 /* NOTREACHED */
6224f72b 2698 case 3:
3280af22 2699 if (PL_restartop) {
533c011a 2700 PL_op = PL_restartop;
3280af22 2701 PL_restartop = 0;
312caa8e 2702 goto redo_body;
a0d0e21e 2703 }
3280af22 2704 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2705 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2706 retval = 0;
2707 else {
2708 retval = 1;
3280af22 2709 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2710 }
312caa8e 2711 break;
a0d0e21e 2712 }
a0d0e21e 2713
edb2152a
NC
2714 if (PL_scopestack_ix > oldscope)
2715 delete_eval_scope();
14dd3ad8 2716 JMPENV_POP;
a0d0e21e 2717 }
1e422769 2718
a0d0e21e 2719 if (flags & G_DISCARD) {
3280af22 2720 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2721 retval = 0;
2722 FREETMPS;
2723 LEAVE;
2724 }
533c011a 2725 PL_op = oldop;
a0d0e21e
LW
2726 return retval;
2727}
2728
6e72f9df 2729/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2730
954c1994
GS
2731/*
2732=for apidoc p||eval_sv
2733
2734Tells Perl to C<eval> the string in the SV.
2735
2736=cut
2737*/
2738
a0d0e21e 2739I32
864dbfa3 2740Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2741
8ac85365 2742 /* See G_* flags in cop.h */
a0d0e21e 2743{
97aff369 2744 dVAR;
924508f0 2745 dSP;
a0d0e21e 2746 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2747 VOL I32 oldmark = SP - PL_stack_base;
2748 VOL I32 retval = 0;
6224f72b 2749 int ret;
c4420975 2750 OP* const oldop = PL_op;
db36c5a1 2751 dJMPENV;
84902520 2752
7918f24d
NC
2753 PERL_ARGS_ASSERT_EVAL_SV;
2754
4633a7c4
LW
2755 if (flags & G_DISCARD) {
2756 ENTER;
2757 SAVETMPS;
2758 }
2759
462e5cf6 2760 SAVEOP();
533c011a
NIS
2761 PL_op = (OP*)&myop;
2762 Zero(PL_op, 1, UNOP);
3280af22
NIS
2763 EXTEND(PL_stack_sp, 1);
2764 *++PL_stack_sp = sv;
79072805 2765
4633a7c4
LW
2766 if (!(flags & G_NOARGS))
2767 myop.op_flags = OPf_STACKED;
5f66b61c 2768 myop.op_next = NULL;
6e72f9df 2769 myop.op_type = OP_ENTEREVAL;
4f911530 2770 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2771 if (flags & G_KEEPERR)
2772 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2773
dedbcade
DM
2774 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2775 * before a PUSHEVAL, which corrupts the stack after a croak */
2776 TAINT_PROPER("eval_sv()");
2777
14dd3ad8 2778 JMPENV_PUSH(ret);
6224f72b
GS
2779 switch (ret) {
2780 case 0:
14dd3ad8 2781 redo_body:
d6f07c05 2782 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2783 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2784 if (!(flags & G_KEEPERR)) {
ab69dbc2 2785 CLEAR_ERRSV();
8433848b 2786 }
4633a7c4 2787 break;
6224f72b 2788 case 1:
f86702cc 2789 STATUS_ALL_FAILURE;
4633a7c4 2790 /* FALL THROUGH */
6224f72b 2791 case 2:
4633a7c4 2792 /* my_exit() was called */
3280af22 2793 PL_curstash = PL_defstash;
4633a7c4 2794 FREETMPS;
14dd3ad8 2795 JMPENV_POP;
cc3604b1 2796 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2797 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2798 my_exit_jump();
4633a7c4 2799 /* NOTREACHED */
6224f72b 2800 case 3:
3280af22 2801 if (PL_restartop) {
533c011a 2802 PL_op = PL_restartop;
3280af22 2803 PL_restartop = 0;
312caa8e 2804 goto redo_body;
4633a7c4 2805 }
3280af22 2806 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2807 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2808 retval = 0;
2809 else {
2810 retval = 1;
3280af22 2811 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2812 }
312caa8e 2813 break;
4633a7c4
LW
2814 }
2815
14dd3ad8 2816 JMPENV_POP;
4633a7c4 2817 if (flags & G_DISCARD) {
3280af22 2818 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2819 retval = 0;
2820 FREETMPS;
2821 LEAVE;
2822 }
533c011a 2823 PL_op = oldop;
4633a7c4
LW
2824 return retval;
2825}
2826
954c1994
GS
2827/*
2828=for apidoc p||eval_pv
2829
2830Tells Perl to C<eval> the given string and return an SV* result.
2831
2832=cut
2833*/
2834
137443ea 2835SV*
864dbfa3 2836Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2837{
97aff369 2838 dVAR;
137443ea
PP
2839 dSP;
2840 SV* sv = newSVpv(p, 0);
2841
7918f24d
NC
2842 PERL_ARGS_ASSERT_EVAL_PV;
2843
864dbfa3 2844 eval_sv(sv, G_SCALAR);
137443ea
PP
2845 SvREFCNT_dec(sv);
2846
2847 SPAGAIN;
2848 sv = POPs;
2849 PUTBACK;
2850
2d8e6c8d 2851 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2852 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2853 }
137443ea
PP
2854
2855 return sv;
2856}
2857
4633a7c4
LW
2858/* Require a module. */
2859
954c1994 2860/*
ccfc67b7
JH
2861=head1 Embedding Functions
2862
954c1994
GS
2863=for apidoc p||require_pv
2864
7d3fb230
BS
2865Tells Perl to C<require> the file named by the string argument. It is
2866analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2867implemented that way; consider using load_module instead.
954c1994 2868
7d3fb230 2869=cut */
954c1994 2870
4633a7c4 2871void
864dbfa3 2872Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2873{
97aff369 2874 dVAR;
d3acc0f7 2875 dSP;
97aff369 2876 SV* sv;
7918f24d
NC
2877
2878 PERL_ARGS_ASSERT_REQUIRE_PV;
2879
e788e7d3 2880 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2881 PUTBACK;
be41e5d9
NC
2882 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2883 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2884 SPAGAIN;
2885 POPSTACK;
79072805
LW
2886}
2887
79072805 2888void
e1ec3a88 2889Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2890{
71315bf2 2891 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2892
7918f24d
NC
2893 PERL_ARGS_ASSERT_MAGICNAME;
2894
c4420975 2895 if (gv)
14befaf4 2896 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2897}
2898
76e3520e 2899STATIC void
e1ec3a88 2900S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2901{
ab821d7f 2902 /* This message really ought to be max 23 lines.
75c72d73 2903 * Removed -h because the user already knows that option. Others? */
fb73857a 2904
27da23d5 2905 static const char * const usage_msg[] = {
aefc56c5 2906"-0[octal] specify record separator (\\0, if no argument)",
aefc56c5
SF
2907"-a autosplit mode with -n or -p (splits $_ into @F)",
2908"-C[number/list] enables the listed Unicode features",
2909"-c check syntax only (runs BEGIN and CHECK blocks)",
2910"-d[:debugger] run program under debugger",
2911"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2912"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2913"-E program like -e, but enables all optional features",
aefc56c5 2914"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2915"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2916"-i[extension] edit <> files in place (makes backup if extension supplied)",
2917"-Idirectory specify @INC/#include directory (several -I's allowed)",
2918"-l[octal] enable line ending processing, specifies line terminator",
2919"-[mM][-]module execute \"use/no module...\" before executing program",
2920"-n assume \"while (<>) { ... }\" loop around program",
2921"-p assume loop like -n but print line also, like sed",
aefc56c5
SF
2922"-s enable rudimentary parsing for switches after programfile",
2923"-S look for programfile using PATH environment variable",
2924"-t enable tainting warnings",
2925"-T enable tainting checks",
2926"-u dump core after parsing program",
2927"-U allow unsafe operations",
2928"-v print version, subversion (includes VERY IMPORTANT perl info)",
2929"-V[:variable] print configuration summary (or a single Config.pm variable)",
2930"-w enable many useful warnings (RECOMMENDED)",
2931"-W enable all warnings",
2932"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2933"-X disable all warnings",
fb73857a
PP
2934"\n",
2935NULL
2936};
27da23d5 2937 const char * const *p = usage_msg;
fb73857a 2938
7918f24d
NC
2939 PERL_ARGS_ASSERT_USAGE;
2940
b0e47665
GS
2941 PerlIO_printf(PerlIO_stdout(),
2942 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2943 name);
fb73857a 2944 while (*p)
b0e47665 2945 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2946}
2947
b4ab917c
DM
2948/* convert a string of -D options (or digits) into an int.
2949 * sets *s to point to the char after the options */
2950
2951#ifdef DEBUGGING
2952int
e1ec3a88 2953Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2954{
27da23d5 2955 static const char * const usage_msgd[] = {
e6e64d9b
JC
2956 " Debugging flag values: (see also -d)",
2957 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2958 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2959 " l Context (loop) stack processing",
2960 " t Trace execution",
2961 " o Method and overloading resolution",
2962 " c String/numeric conversions",
4c84d7f2 2963 " P Print profiling info, source file input state",
d7a2c63c 2964 " m Memory and SV allocation",
e6e64d9b
JC
2965 " f Format processing",
2966 " r Regular expression parsing and execution",
2967 " x Syntax tree dump",
3679267a 2968 " u Tainting checks",
e6e64d9b
JC
2969 " H Hash dump -- usurps values()",
2970 " X Scratchpad allocation",
2971 " D Cleaning up",
e6e64d9b
JC
2972 " T Tokenising",
2973 " R Include reference counts of dumped variables (eg when using -Ds)",
2974 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2975 " v Verbose: use in conjunction with other flags",
2976 " C Copy On Write",
2977 " A Consistency checks on internal structures",
3679267a 2978 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2979 NULL
2980 };
b4ab917c 2981 int i = 0;
7918f24d
NC
2982
2983 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2984
b4ab917c
DM
2985 if (isALPHA(**s)) {
2986 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2987 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2988
2989 for (; isALNUM(**s); (*s)++) {
c4420975 2990 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2991 if (d)
2992 i |= 1 << (d - debopts);
2993 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2994 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2995 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2996 }
2997 }
e6e64d9b 2998 else if (isDIGIT(**s)) {
b4ab917c
DM
2999 i = atoi(*s);
3000 for (; isALNUM(**s); (*s)++) ;
3001 }
ddcf8bc1 3002 else if (givehelp) {
06e869a4 3003 const char *const *p = usage_msgd;
e6e64d9b
JC
3004 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
3005 }
b4ab917c
DM
3006# ifdef EBCDIC
3007 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3008 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3009 "-Dp not implemented on this platform\n");
3010# endif
3011 return i;
3012}
3013#endif
3014
79072805
LW
3015/* This routine handles any switches that can be given during run */
3016
c7030b81
NC
3017const char *
3018Perl_moreswitches(pTHX_ const char *s)
79072805 3019{
27da23d5 3020 dVAR;
84c133a0 3021 UV rschar;
0544e6df 3022 const char option = *s; /* used to remember option in -m/-M code */
79072805 3023
7918f24d
NC
3024 PERL_ARGS_ASSERT_MORESWITCHES;
3025
79072805
LW
3026 switch (*s) {
3027 case '0':
a863c7d1 3028 {
f2095865 3029 I32 flags = 0;
a3b680e6 3030 STRLEN numlen;
f2095865
JH
3031
3032 SvREFCNT_dec(PL_rs);
3033 if (s[1] == 'x' && s[2]) {
a3b680e6 3034 const char *e = s+=2;
f2095865
JH
3035 U8 *tmps;
3036
a3b680e6
AL
3037 while (*e)
3038 e++;
f2095865
JH
3039 numlen = e - s;
3040 flags = PERL_SCAN_SILENT_ILLDIGIT;
3041 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3042 if (s + numlen < e) {
3043 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3044 numlen = 0;
3045 s--;
3046 }
396482e1 3047 PL_rs = newSVpvs("");
c5661c80 3048 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3049 tmps = (U8*)SvPVX(PL_rs);
3050 uvchr_to_utf8(tmps, rschar);
3051 SvCUR_set(PL_rs, UNISKIP(rschar));
3052 SvUTF8_on(PL_rs);
3053 }
3054 else {
3055 numlen = 4;
3056 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3057 if (rschar & ~((U8)~0))
3058 PL_rs = &PL_sv_undef;
3059 else if (!rschar && numlen >= 2)
396482e1 3060 PL_rs = newSVpvs("");
f2095865
JH
3061 else {
3062 char ch = (char)rschar;
3063 PL_rs = newSVpvn(&ch, 1);
3064 }
3065 }
800633c3 3066 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3067 return s + numlen;
a863c7d1 3068 }
46487f74 3069 case 'C':
a05d7ebb 3070 s++;
dd374669 3071 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3072 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3073 PL_utf8cache = -1;
46487f74 3074 return s;
2304df62 3075 case 'F':
3280af22 3076 PL_minus_F = TRUE;
ebce5377
RGS
3077 PL_splitstr = ++s;
3078 while (*s && !isSPACE(*s)) ++s;
e49e380e 3079 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3080 return s;
79072805 3081 case 'a':
3280af22 3082 PL_minus_a = TRUE;
79072805
LW
3083 s++;
3084 return s;
3085 case 'c':
3280af22 3086 PL_minus_c = TRUE;
79072805
LW
3087 s++;
3088 return s;
3089 case 'd':
f20b2998 3090 forbid_setid('d', FALSE);
4633a7c4 3091 s++;
2cbb2ee1
RGS
3092
3093 /* -dt indicates to the debugger that threads will be used */
3094 if (*s == 't' && !isALNUM(s[1])) {
3095 ++s;
3096 my_setenv("PERL5DB_THREADED", "1");
3097 }
3098
70c94a19
RR
3099 /* The following permits -d:Mod to accepts arguments following an =
3100 in the fashion that -MSome::Mod does. */
3101 if (*s == ':' || *s == '=') {
f85893a1
NC
3102 const char *start = ++s;
3103 const char *const end = s + strlen(s);
396482e1 3104 SV * const sv = newSVpvs("use Devel::");
f85893a1 3105
70c94a19
RR
3106 /* We now allow -d:Module=Foo,Bar */
3107 while(isALNUM(*s) || *s==':') ++s;
3108 if (*s != '=')
f85893a1 3109 sv_catpvn(sv, start, end - start);
70c94a19
RR
3110 else {
3111 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3112 /* Don't use NUL as q// delimiter here, this string goes in the
3113 * environment. */
3114 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3115 }
f85893a1 3116 s = end;
184f32ec 3117 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3118 SvREFCNT_dec(sv);
4633a7c4 3119 }
ed094faf 3120 if (!PL_perldb) {
3280af22 3121 PL_perldb = PERLDB_ALL;
a0d0e21e 3122 init_debugger();
ed094faf 3123 }
79072805
LW
3124 return s;
3125 case 'D':
0453d815 3126 {
79072805 3127#ifdef DEBUGGING
f20b2998 3128 forbid_setid('D', FALSE);
b4ab917c 3129 s++;
dd374669 3130 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3131#else /* !DEBUGGING */
0453d815 3132 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3133 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3134 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3135 for (s++; isALNUM(*s); s++) ;
79072805 3136#endif
79072805 3137 return s;
0453d815 3138 }
4633a7c4 3139 case 'h':
ac27b0f5 3140 usage(PL_origargv[0]);
7ca617d0 3141 my_exit(0);
79072805 3142 case 'i':
43c5f42d 3143 Safefree(PL_inplace);
c030f24b
GH
3144#if defined(__CYGWIN__) /* do backup extension automagically */
3145 if (*(s+1) == '\0') {
c86a4f2e 3146 PL_inplace = savepvs(".bak");
c030f24b
GH
3147 return s+1;
3148 }
3149#endif /* __CYGWIN__ */
5ef5d758 3150 {
d4c19fe8 3151 const char * const start = ++s;
5ef5d758
NC
3152 while (*s && !isSPACE(*s))
3153 ++s;
3154
3155 PL_inplace = savepvn(start, s - start);
3156 }
7b8d334a 3157 if (*s) {
5ef5d758 3158 ++s;
7b8d334a 3159 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3160 s++;
7b8d334a 3161 }
fb73857a 3162 return s;
4e49a025 3163 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3164 forbid_setid('I', FALSE);
fb73857a
PP
3165 ++s;
3166 while (*s && isSPACE(*s))
3167 ++s;
3168 if (*s) {
c7030b81 3169 const char *e, *p;
0df16ed7
GS
3170 p = s;
3171 /* ignore trailing spaces (possibly followed by other switches) */
3172 do {
3173 for (e = p; *e && !isSPACE(*e); e++) ;
3174 p = e;
3175 while (isSPACE(*p))
3176 p++;
3177 } while (*p && *p != '-');
3178 e = savepvn(s, e-s);
88fe16b2 3179 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3180 Safefree(e);
3181 s = p;
3182 if (*s == '-')
3183 s++;
79072805
LW
3184 }
3185 else
a67e862a 3186 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3187 return s;
79072805 3188 case 'l':
3280af22 3189 PL_minus_l = TRUE;
79072805 3190 s++;
7889fe52
NIS
3191 if (PL_ors_sv) {
3192 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3193 PL_ors_sv = NULL;
7889fe52 3194 }
79072805 3195 if (isDIGIT(*s)) {
53305cf1 3196 I32 flags = 0;
a3b680e6 3197 STRLEN numlen;
396482e1 3198 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3199 numlen = 3 + (*s == '0');
3200 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3201 s += numlen;
3202 }
3203 else {
8bfdd7d9 3204 if (RsPARA(PL_rs)) {
396482e1 3205 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3206 }
3207 else {
8bfdd7d9 3208 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3209 }
79072805
LW
3210 }
3211 return s;
1a30305b 3212 case 'M':
f20b2998 3213 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3214 /* FALL THROUGH */
3215 case 'm':
f20b2998 3216 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3217 if (*++s) {
c7030b81 3218 const char *start;
b64cb68c 3219 const char *end;
11343788 3220 SV *sv;
e1ec3a88 3221 const char *use = "use ";
0544e6df 3222 bool colon = FALSE;
a5f75d66 3223 /* -M-foo == 'no foo' */
d0043bd1
NC
3224 /* Leading space on " no " is deliberate, to make both
3225 possibilities the same length. */
3226 if (*s == '-') { use = " no "; ++s; }
3227 sv = newSVpvn(use,4);
a5f75d66 3228 start = s;
1a30305b 3229 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3230 while(isALNUM(*s) || *s==':') {
3231 if( *s++ == ':' ) {
3232 if( *s == ':' )
3233 s++;
3234 else
3235 colon = TRUE;
3236 }
3237 }
3238 if (s == start)
3239 Perl_croak(aTHX_ "Module name required with -%c option",
3240 option);
3241 if (colon)
3242 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3243 "contains single ':'",
63da6837 3244 (int)(s - start), start, option);
b64cb68c 3245 end = s + strlen(s);
c07a80fd 3246 if (*s != '=') {
b64cb68c 3247 sv_catpvn(sv, start, end - start);
0544e6df 3248 if (option == 'm') {
c07a80fd 3249 if (*s != '\0')
cea2e8a9 3250 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3251 sv_catpvs( sv, " ()");
c07a80fd
PP
3252 }
3253 } else {
11343788 3254 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3255 /* Use NUL as q''-delimiter. */
3256 sv_catpvs(sv, " split(/,/,q\0");
3257 ++s;
3258 sv_catpvn(sv, s, end - s);
396482e1 3259 sv_catpvs(sv, "\0)");
c07a80fd 3260 }
b64cb68c 3261 s = end;
29a861e7 3262 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3263 }
3264 else
0544e6df 3265 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3266 return s;
79072805 3267 case 'n':
3280af22 3268 PL_minus_n = TRUE;
79072805
LW
3269 s++;
3270 return s;
3271 case 'p':
3280af22 3272 PL_minus_p = TRUE;
79072805
LW
3273 s++;
3274 return s;
3275 case 's':
f20b2998 3276 forbid_setid('s', FALSE);
3280af22 3277 PL_doswitches = TRUE;
79072805
LW
3278 s++;
3279 return s;
6537fe72
MS
3280 case 't':
3281 if (!PL_tainting)
22f7c9c9 3282 TOO_LATE_FOR('t');
6537fe72
MS
3283 s++;
3284 return s;
463ee0b2 3285 case 'T':
3280af22 3286 if (!PL_tainting)
22f7c9c9 3287 TOO_LATE_FOR('T');
463ee0b2
LW
3288 s++;
3289 return s;
79072805 3290 case 'u':
bf4acbe4
GS
3291#ifdef MACOS_TRADITIONAL
3292 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3293#endif
3280af22 3294 PL_do_undump = TRUE;
79072805
LW
3295 s++;
3296 return s;
3297 case 'U':
3280af22 3298 PL_unsafe = TRUE;
79072805
LW
3299 s++;
3300 return s;
3301 case 'v':
d7aa5382 3302 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3303 upg_version(PL_patchlevel, TRUE);
8e9464f1 3304#if !defined(DGUX)
b0e47665 3305 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3306 Perl_form(aTHX_ "\nThis is perl, %"SVf
3307#ifdef PERL_PATCHNUM
3308 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3309#endif
3310 " built for %s",
be2597df 3311 SVfARG(vstringify(PL_patchlevel)),
95b63a38 3312 ARCHNAME));
8e9464f1
JH
3313#else /* DGUX */
3314/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3315 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3316 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3317 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3318 PerlIO_printf(PerlIO_stdout(),
3319 Perl_form(aTHX_ " built under %s at %s %s\n",
3320 OSNAME, __DATE__, __TIME__));
3321 PerlIO_printf(PerlIO_stdout(),
3322 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3323 OSVERS));
8e9464f1
JH
3324#endif /* !DGUX */
3325
fb73857a
PP
3326#if defined(LOCAL_PATCH_COUNT)
3327 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3328 PerlIO_printf(PerlIO_stdout(),
3329 "\n(with %d registered patch%s, "
3330 "see perl -V for more detail)",
bb7a0f54 3331 LOCAL_PATCH_COUNT,
b0e47665 3332 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3333#endif
1a30305b 3334
b0e47665 3335 PerlIO_printf(PerlIO_stdout(),
9be01f29 3336 "\n\nCopyright 1987-2008, Larry Wall\n");
eae9c151
JH
3337#ifdef MACOS_TRADITIONAL
3338 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3339 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3340 "maintained by Chris Nandor\n");
eae9c151 3341#endif
79072805 3342#ifdef MSDOS
b0e47665
GS
3343 PerlIO_printf(PerlIO_stdout(),
3344 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3345#endif
3346#ifdef DJGPP
b0e47665
GS
3347 PerlIO_printf(PerlIO_stdout(),
3348 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3349 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3350#endif
79072805 3351#ifdef OS2
b0e47665
GS
3352 PerlIO_printf(PerlIO_stdout(),
3353 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3354 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3355#endif
79072805 3356#ifdef atarist
b0e47665
GS
3357 PerlIO_printf(PerlIO_stdout(),
3358 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3359#endif
a3f9223b 3360#ifdef __BEOS__
b0e47665
GS
3361 PerlIO_printf(PerlIO_stdout(),
3362 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3363#endif
1d84e8df 3364#ifdef MPE
b0e47665 3365 PerlIO_printf(PerlIO_stdout(),
e583a879 3366 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3367#endif
9d116dd7 3368#ifdef OEMVS
b0e47665
GS
3369 PerlIO_printf(PerlIO_stdout(),
3370 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3371#endif
495c5fdc 3372#ifdef __VOS__
b0e47665 3373 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3374 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3375#endif
092bebab 3376#ifdef __OPEN_VM
b0e47665
GS
3377 PerlIO_printf(PerlIO_stdout(),
3378 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3379#endif
a1a0e61e 3380#ifdef POSIX_BC
b0e47665
GS
3381 PerlIO_printf(PerlIO_stdout(),
3382 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3383#endif
61ae2fbf 3384#ifdef __MINT__
b0e47665
GS
3385 PerlIO_printf(PerlIO_stdout(),
3386 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3387#endif
f83d2536 3388#ifdef EPOC
b0e47665 3389 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3390 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3391#endif
e1caacb4 3392#ifdef UNDER_CE
b475b3e6
JH
3393 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3394 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3395 wce_hitreturn();
3396#endif
a0fd4948 3397#ifdef __SYMBIAN32__
27da23d5
JH
3398 PerlIO_printf(PerlIO_stdout(),
3399 "Symbian port by Nokia, 2004-2005\n");
3400#endif
baed7233
DL
3401#ifdef BINARY_BUILD_NOTICE
3402 BINARY_BUILD_NOTICE;
3403#endif
b0e47665
GS
3404 PerlIO_printf(PerlIO_stdout(),
3405 "\n\
79072805 3406Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3407GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3408Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3409this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3410Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3411 my_exit(0);
79072805 3412 case 'w':
b2e5e6ba 3413 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3414 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3415 }
599cee73
PM
3416 s++;
3417 return s;
3418 case 'W':
ac27b0f5 3419 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3420 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3421 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3422 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3423 s++;
3424 return s;
3425 case 'X':
ac27b0f5 3426 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3427 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3428 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3429 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3430 s++;
3431 return s;
a0d0e21e 3432 case '*':
79072805 3433 case ' ':
d3133c89
NC
3434 while( *s == ' ' )
3435 ++s;
3436 if (s[0] == '-') /* Additional switches on #! line. */
3437 return s+1;
79072805 3438 break;
a0d0e21e 3439 case '-':
79072805 3440 case 0:
51882d45 3441#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3442 case '\r':
3443#endif
79072805
LW
3444 case '\n':
3445 case '\t':
3446 break;
aa689395
PP
3447#ifdef ALTERNATE_SHEBANG
3448 case 'S': /* OS/2 needs -S on "extproc" line. */
3449 break;
3450#endif
79072805 3451 default:
cea2e8a9 3452 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3453 }
bd61b366 3454 return NULL;
79072805
LW
3455}
3456
3457/* compliments of Tom Christiansen */
3458
3459/* unexec() can be found in the Gnu emacs distribution */
ee580363 3460/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3461
3462void
864dbfa3 3463Perl_my_unexec(pTHX)
79072805 3464{
b37c2d43 3465 PERL_UNUSED_CONTEXT;
79072805 3466#ifdef UNEXEC
b37c2d43
AL
3467 SV * prog = newSVpv(BIN_EXP, 0);
3468 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3469 int status = 1;
79072805
LW
3470 extern int etext;
3471
396482e1 3472 sv_catpvs(prog, "/perl");
396482e1 3473 sv_catpvs(file, ".perldump");
79072805 3474
ee580363
GS
3475 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3476 /* unexec prints msg to stderr in case of failure */
6ad3d225 3477 PerlProc_exit(status);
79072805 3478#else
a5f75d66
AD
3479# ifdef VMS
3480# include <lib$routines.h>
3481 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3482# elif defined(WIN32) || defined(__CYGWIN__)
3483 Perl_croak(aTHX_ "dump is not supported");
aa689395 3484# else
79072805 3485 ABORT(); /* for use with undump */
aa689395 3486# endif
a5f75d66 3487#endif
79072805
LW
3488}
3489
cb68f92d
GS
3490/* initialize curinterp */
3491STATIC void
cea2e8a9 3492S_init_interp(pTHX)
cb68f92d 3493{
97aff369 3494 dVAR;
acfe0abc
GS
3495#ifdef MULTIPLICITY
3496# define PERLVAR(var,type)
3497# define PERLVARA(var,n,type)
3498# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3499# define PERLVARI(var,type,init) aTHX->var = init;
3500# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3501# else
acfe0abc
GS
3502# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3503# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3504# endif
acfe0abc 3505# include "intrpvar.h"
acfe0abc
GS
3506# undef PERLVAR
3507# undef PERLVARA
3508# undef PERLVARI