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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("");
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370 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
371 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
372 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* 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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388 HvSHAREKEYS_off(PL_strtab); /* mandatory */
389 hv_ksplit(PL_strtab, 512);
390
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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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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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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
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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));
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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;
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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
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484 const int sock = PL_dumper_fd;
485 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
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486 union control_un control;
487 struct msghdr msg;
808ad2d0 488 struct iovec vec[2];
bf357333 489 struct cmsghdr *cmptr;
808ad2d0
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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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496 return;
497
498 PerlIO_flush(Perl_debug_log);
499
bf357333
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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");
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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
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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);
76f68e9b 1715 sv_setpvs(linestr_sv,"");
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
e187df3b
NC
1881# ifdef USE_FAST_STDIO
1882 " USE_FAST_STDIO"
1883# endif
389d73ad 1884 , 0);
efcaa95b 1885
b75885fd 1886 sv_catpv(opts_prog, PL_bincompat_options);
389d73ad
NC
1887 /* Terminate the qw(, and then wrap at 76 columns. */
1888 sv_catpvs(opts_prog, "); s/(?=.{53})(.{1,53}) /$1\\n /mg;print Config::myconfig(),");
1889#ifdef VMS
1890 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n");
1891#else
1892 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n");
1893#endif
efcaa95b 1894
389d73ad 1895 sv_catpvs(opts_prog," Compile-time options: $_\\n\",");
b363f7ed 1896
6224f72b 1897#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1898 if (LOCAL_PATCH_COUNT > 0) {
1899 int i;
396482e1 1900 sv_catpvs(opts_prog,
7edfd0ef
NC
1901 "\" Locally applied patches:\\n\",");
1902 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1903 if (PL_localpatches[i])
1904 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1905 0, PL_localpatches[i], 0);
1906 }
6224f72b 1907 }
6224f72b 1908#endif
7edfd0ef 1909 Perl_sv_catpvf(aTHX_ opts_prog,
758ce194 1910 "\" Built under %s\\n",OSNAME);
6224f72b
GS
1911#ifdef __DATE__
1912# ifdef __TIME__
895aa832
NC
1913 sv_catpvs(opts_prog,
1914 " Compiled at " __DATE__ " " __TIME__ "\\n\"");
6224f72b 1915# else
895aa832 1916 sv_catpvs(opts_prog, " Compiled on " __DATE__ "\\n\"");
6224f72b
GS
1917# endif
1918#endif
396482e1 1919 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1920 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1921 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1922#ifdef __CYGWIN__
396482e1 1923 sv_catpvs(opts_prog,
7edfd0ef 1924 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1925#endif
396482e1 1926 sv_catpvs(opts_prog,
7edfd0ef
NC
1927 "print \" \\%ENV:\\n @env\\n\" if @env;"
1928 "print \" \\@INC:\\n @INC\\n\";");
1929 }
1930 else {
1931 ++s;
1932 opts_prog = Perl_newSVpvf(aTHX_
1933 "Config::config_vars(qw%c%s%c)",
1934 0, s, 0);
1935 s += strlen(s);
1936 }
1937 av_push(PL_preambleav, opts_prog);
1938 /* don't look for script or read stdin */
1939 scriptname = BIT_BUCKET;
1940 goto reswitch;
6224f72b 1941 }
6224f72b 1942 case 'x':
3280af22 1943 PL_doextract = TRUE;
6224f72b 1944 s++;
304334da 1945 if (*s)
f4c556ac 1946 cddir = s;
6224f72b
GS
1947 break;
1948 case 0:
1949 break;
1950 case '-':
1951 if (!*++s || isSPACE(*s)) {
1952 argc--,argv++;
1953 goto switch_end;
1954 }
1955 /* catch use of gnu style long options */
1956 if (strEQ(s, "version")) {
dd374669 1957 s = (char *)"v";
6224f72b
GS
1958 goto reswitch;
1959 }
1960 if (strEQ(s, "help")) {
dd374669 1961 s = (char *)"h";
6224f72b
GS
1962 goto reswitch;
1963 }
1964 s--;
1965 /* FALL THROUGH */
1966 default:
cea2e8a9 1967 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1968 }
1969 }
c7030b81
NC
1970 }
1971
6224f72b 1972 switch_end:
54310121 1973
c7030b81
NC
1974 {
1975 char *s;
1976
f675dbe5
CB
1977 if (
1978#ifndef SECURE_INTERNAL_GETENV
1979 !PL_tainting &&
1980#endif
cf756827 1981 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1982 {
74288ac8
GS
1983 while (isSPACE(*s))
1984 s++;
317ea90d 1985 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1986 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1987 PL_tainting = TRUE;
317ea90d
MS
1988 PL_taint_warn = FALSE;
1989 }
74288ac8 1990 else {
bd61b366 1991 char *popt_copy = NULL;
74288ac8 1992 while (s && *s) {
54913509 1993 const char *d;
74288ac8
GS
1994 while (isSPACE(*s))
1995 s++;
1996 if (*s == '-') {
1997 s++;
1998 if (isSPACE(*s))
1999 continue;
2000 }
4ea8f8fb 2001 d = s;
74288ac8
GS
2002 if (!*s)
2003 break;
f0d36289 2004 if (!strchr("CDIMUdmtw", *s))
cea2e8a9 2005 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2006 while (++s && *s) {
2007 if (isSPACE(*s)) {
cf756827 2008 if (!popt_copy) {
bfa6c418
NC
2009 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2010 s = popt_copy + (s - d);
2011 d = popt_copy;
cf756827 2012 }
4ea8f8fb
MS
2013 *s++ = '\0';
2014 break;
2015 }
2016 }
1c4db469 2017 if (*d == 't') {
317ea90d
MS
2018 if( !PL_tainting ) {
2019 PL_taint_warn = TRUE;
2020 PL_tainting = TRUE;
2021 }
1c4db469 2022 } else {
97bd5664 2023 moreswitches(d);
1c4db469 2024 }
6224f72b 2025 }
6224f72b
GS
2026 }
2027 }
c7030b81 2028 }
a0d0e21e 2029
20ef40cf
GA
2030#ifdef USE_SITECUSTOMIZE
2031 if (!minus_f) {
29a861e7
NC
2032 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2033 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
20ef40cf
GA
2034 }
2035#endif
2036
6224f72b
GS
2037 if (!scriptname)
2038 scriptname = argv[0];
3280af22 2039 if (PL_e_script) {
6224f72b
GS
2040 argc++,argv--;
2041 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2042 }
bd61b366 2043 else if (scriptname == NULL) {
6224f72b
GS
2044#ifdef MSDOS
2045 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2046 moreswitches("h");
6224f72b
GS
2047#endif
2048 scriptname = "-";
2049 }
2050
b7975bdd
NC
2051 /* Set $^X early so that it can be used for relocatable paths in @INC */
2052 assert (!PL_tainted);
2053 TAINT;
2054 S_set_caret_X(aTHX);
2055 TAINT_NOT;
6224f72b
GS
2056 init_perllib();
2057
a52eba0e 2058 {
f20b2998 2059 bool suidscript = FALSE;
829372d3
NC
2060
2061#ifdef DOSUID
2062 const int fdscript =
2063#endif
2064 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2065
2f9285f8
DM
2066 validate_suid(validarg, scriptname, fdscript, suidscript,
2067 linestr_sv, rsfp);
6224f72b 2068
64ca3a65 2069#ifndef PERL_MICRO
a52eba0e
NC
2070# if defined(SIGCHLD) || defined(SIGCLD)
2071 {
2072# ifndef SIGCHLD
2073# define SIGCHLD SIGCLD
2074# endif
2075 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2076 if (sigstate == (Sighandler_t) SIG_IGN) {
2077 if (ckWARN(WARN_SIGNAL))
2078 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2079 "Can't ignore signal CHLD, forcing to default");
2080 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2081 }
0b5b802d 2082 }
a52eba0e 2083# endif
64ca3a65 2084#endif
0b5b802d 2085
a52eba0e 2086 if (PL_doextract
bf4acbe4 2087#ifdef MACOS_TRADITIONAL
a52eba0e 2088 || gMacPerl_AlwaysExtract
bf4acbe4 2089#endif
a52eba0e 2090 ) {
faef540c 2091
f20b2998 2092 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2093 setuid scripts. */
2094 forbid_setid('x', suidscript);
f20b2998 2095 /* Hence you can't get here if suidscript is true */
faef540c 2096
2f9285f8 2097 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2098 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2099 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2100 }
f4c556ac 2101 }
6224f72b 2102
ea726b52 2103 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2104 CvUNIQUE_on(PL_compcv);
2105
dd2155a4 2106 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2107
dd69841b
BB
2108 PL_isarev = newHV();
2109
0c4f7ff0 2110 boot_core_PerlIO();
6224f72b 2111 boot_core_UNIVERSAL();
09bef843 2112 boot_core_xsutils();
e1a479c5 2113 boot_core_mro();
6224f72b
GS
2114
2115 if (xsinit)
acfe0abc 2116 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2117#ifndef PERL_MICRO
d0d72822 2118#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2119 init_os_extras();
6224f72b 2120#endif
64ca3a65 2121#endif
6224f72b 2122
29209bc5 2123#ifdef USE_SOCKS
1b9c9cf5
DH
2124# ifdef HAS_SOCKS5_INIT
2125 socks5_init(argv[0]);
2126# else
29209bc5 2127 SOCKSinit(argv[0]);
1b9c9cf5 2128# endif
ac27b0f5 2129#endif
29209bc5 2130
6224f72b
GS
2131 init_predump_symbols();
2132 /* init_postdump_symbols not currently designed to be called */
2133 /* more than once (ENV isn't cleared first, for example) */
2134 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2135 if (!PL_do_undump)
6224f72b
GS
2136 init_postdump_symbols(argc,argv,env);
2137
27da23d5
JH
2138 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2139 * or explicitly in some platforms.
085a54d9 2140 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2141 * look like the user wants to use UTF-8. */
a0fd4948 2142#if defined(__SYMBIAN32__)
27da23d5
JH
2143 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2144#endif
06e66572
JH
2145 if (PL_unicode) {
2146 /* Requires init_predump_symbols(). */
a05d7ebb 2147 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2148 IO* io;
2149 PerlIO* fp;
2150 SV* sv;
2151
a05d7ebb 2152 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2153 * and the default open disciplines. */
a05d7ebb
JH
2154 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2155 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2156 (fp = IoIFP(io)))
2157 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2158 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2159 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2160 (fp = IoOFP(io)))
2161 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2162 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2163 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2164 (fp = IoOFP(io)))
2165 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2166 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2167 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2168 SVt_PV)))) {
a05d7ebb
JH
2169 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2170 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2171 if (in) {
2172 if (out)
76f68e9b 2173 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2174 else
76f68e9b 2175 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2176 }
2177 else if (out)
76f68e9b 2178 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2179 SvSETMAGIC(sv);
2180 }
b310b053
JH
2181 }
2182 }
2183
c7030b81
NC
2184 {
2185 const char *s;
4ffa73a3
JH
2186 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2187 if (strEQ(s, "unsafe"))
2188 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2189 else if (strEQ(s, "safe"))
2190 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2191 else
2192 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2193 }
c7030b81 2194 }
4ffa73a3 2195
81d86705 2196#ifdef PERL_MAD
c7030b81
NC
2197 {
2198 const char *s;
81d86705
NC
2199 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2200 PL_madskills = 1;
2201 PL_minus_c = 1;
2202 if (!s || !s[0])
2203 PL_xmlfp = PerlIO_stdout();
2204 else {
2205 PL_xmlfp = PerlIO_open(s, "w");
2206 if (!PL_xmlfp)
2207 Perl_croak(aTHX_ "Can't open %s", s);
2208 }
1a9a51d4 2209 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2210 }
c7030b81
NC
2211 }
2212
2213 {
2214 const char *s;
81d86705
NC
2215 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2216 PL_madskills = atoi(s);
1a9a51d4 2217 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2218 }
c7030b81 2219 }
81d86705
NC
2220#endif
2221
5486870f 2222 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2223 PL_subname = newSVpvs("main");
6224f72b 2224
5486870f
DM
2225 if (add_read_e_script)
2226 filter_add(read_e_script, NULL);
2227
6224f72b
GS
2228 /* now parse the script */
2229
93189314 2230 SETERRNO(0,SS_NORMAL);
bf4acbe4 2231#ifdef MACOS_TRADITIONAL
13765c85 2232 if (gMacPerl_SyntaxError = (yyparse() || PL_parser->error_count)) {
bf4acbe4
GS
2233 if (PL_minus_c)
2234 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2235 else {
2236 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2237 MacPerl_MPWFileName(PL_origfilename));
2238 }
2239 }
2240#else
13765c85 2241 if (yyparse() || PL_parser->error_count) {
3280af22 2242 if (PL_minus_c)
cea2e8a9 2243 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2244 else {
cea2e8a9 2245 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2246 PL_origfilename);
6224f72b
GS
2247 }
2248 }
bf4acbe4 2249#endif
57843af0 2250 CopLINE_set(PL_curcop, 0);
3280af22 2251 PL_curstash = PL_defstash;
3280af22
NIS
2252 if (PL_e_script) {
2253 SvREFCNT_dec(PL_e_script);
a0714e2c 2254 PL_e_script = NULL;
6224f72b
GS
2255 }
2256
3280af22 2257 if (PL_do_undump)
6224f72b
GS
2258 my_unexec();
2259
57843af0
GS
2260 if (isWARN_ONCE) {
2261 SAVECOPFILE(PL_curcop);
2262 SAVECOPLINE(PL_curcop);
3280af22 2263 gv_check(PL_defstash);
57843af0 2264 }
6224f72b
GS
2265
2266 LEAVE;
2267 FREETMPS;
2268
2269#ifdef MYMALLOC
f6a607bc
RGS
2270 {
2271 const char *s;
6224f72b
GS
2272 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2273 dump_mstats("after compilation:");
f6a607bc 2274 }
6224f72b
GS
2275#endif
2276
2277 ENTER;
3280af22 2278 PL_restartop = 0;
312caa8e 2279 return NULL;
6224f72b
GS
2280}
2281
954c1994
GS
2282/*
2283=for apidoc perl_run
2284
2285Tells a Perl interpreter to run. See L<perlembed>.
2286
2287=cut
2288*/
2289
6224f72b 2290int
0cb96387 2291perl_run(pTHXx)
6224f72b 2292{
97aff369 2293 dVAR;
6224f72b 2294 I32 oldscope;
14dd3ad8 2295 int ret = 0;
db36c5a1 2296 dJMPENV;
6224f72b 2297
7918f24d
NC
2298 PERL_ARGS_ASSERT_PERL_RUN;
2299#ifndef MULTIPLICITY
ed6c66dd 2300 PERL_UNUSED_ARG(my_perl);
7918f24d 2301#endif
9d4ba2ae 2302
3280af22 2303 oldscope = PL_scopestack_ix;
96e176bf
CL
2304#ifdef VMS
2305 VMSISH_HUSHED = 0;
2306#endif
6224f72b 2307
14dd3ad8 2308 JMPENV_PUSH(ret);
6224f72b
GS
2309 switch (ret) {
2310 case 1:
2311 cxstack_ix = -1; /* start context stack again */
312caa8e 2312 goto redo_body;
14dd3ad8 2313 case 0: /* normal completion */
14dd3ad8
GS
2314 redo_body:
2315 run_body(oldscope);
14dd3ad8
GS
2316 /* FALL THROUGH */
2317 case 2: /* my_exit() */
3280af22 2318 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2319 LEAVE;
2320 FREETMPS;
3280af22 2321 PL_curstash = PL_defstash;
3a1ee7e8 2322 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2323 PL_endav && !PL_minus_c)
2324 call_list(oldscope, PL_endav);
6224f72b
GS
2325#ifdef MYMALLOC
2326 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2327 dump_mstats("after execution: ");
2328#endif
37038d91 2329 ret = STATUS_EXIT;
14dd3ad8 2330 break;
6224f72b 2331 case 3:
312caa8e
CS
2332 if (PL_restartop) {
2333 POPSTACK_TO(PL_mainstack);
2334 goto redo_body;
6224f72b 2335 }
bf49b057 2336 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2337 FREETMPS;
14dd3ad8
GS
2338 ret = 1;
2339 break;
6224f72b
GS
2340 }
2341
14dd3ad8
GS
2342 JMPENV_POP;
2343 return ret;
312caa8e
CS
2344}
2345
dd374669 2346STATIC void
14dd3ad8
GS
2347S_run_body(pTHX_ I32 oldscope)
2348{
97aff369 2349 dVAR;
6224f72b 2350 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2351 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2352
3280af22 2353 if (!PL_restartop) {
81d86705
NC
2354#ifdef PERL_MAD
2355 if (PL_xmlfp) {
2356 xmldump_all();
2357 exit(0); /* less likely to core dump than my_exit(0) */
2358 }
2359#endif
6224f72b 2360 DEBUG_x(dump_all());
cf2782cd 2361#ifdef DEBUGGING
ecae49c0
NC
2362 if (!DEBUG_q_TEST)
2363 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2364#endif
6224f72b 2365
3280af22 2366 if (PL_minus_c) {
bf4acbe4 2367#ifdef MACOS_TRADITIONAL
e69a2255
JH
2368 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2369 (gMacPerl_ErrorFormat ? "# " : ""),
2370 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2371#else
bf49b057 2372 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2373#endif
6224f72b
GS
2374 my_exit(0);
2375 }
3280af22 2376 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2377 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2378 if (PL_initav)
2379 call_list(oldscope, PL_initav);
f1fac472
NC
2380#ifdef PERL_DEBUG_READONLY_OPS
2381 Perl_pending_Slabs_to_ro(aTHX);
2382#endif
6224f72b
GS
2383 }
2384
2385 /* do it */
2386
3280af22 2387 if (PL_restartop) {
533c011a 2388 PL_op = PL_restartop;
3280af22 2389 PL_restartop = 0;
cea2e8a9 2390 CALLRUNOPS(aTHX);
6224f72b 2391 }
3280af22
NIS
2392 else if (PL_main_start) {
2393 CvDEPTH(PL_main_cv) = 1;
533c011a 2394 PL_op = PL_main_start;
cea2e8a9 2395 CALLRUNOPS(aTHX);
6224f72b 2396 }
f6b3007c
JH
2397 my_exit(0);
2398 /* NOTREACHED */
6224f72b
GS
2399}
2400
954c1994 2401/*
ccfc67b7
JH
2402=head1 SV Manipulation Functions
2403
954c1994
GS
2404=for apidoc p||get_sv
2405
2406Returns the SV of the specified Perl scalar. If C<create> is set and the
2407Perl variable does not exist then it will be created. If C<create> is not
2408set and the variable does not exist then NULL is returned.
2409
2410=cut
2411*/
2412
6224f72b 2413SV*
864dbfa3 2414Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2415{
2416 GV *gv;
7918f24d
NC
2417
2418 PERL_ARGS_ASSERT_GET_SV;
2419
6224f72b
GS
2420 gv = gv_fetchpv(name, create, SVt_PV);
2421 if (gv)
2422 return GvSV(gv);
a0714e2c 2423 return NULL;
6224f72b
GS
2424}
2425
954c1994 2426/*
ccfc67b7
JH
2427=head1 Array Manipulation Functions
2428
954c1994
GS
2429=for apidoc p||get_av
2430
2431Returns the AV of the specified Perl array. If C<create> is set and the
2432Perl variable does not exist then it will be created. If C<create> is not
2433set and the variable does not exist then NULL is returned.
2434
2435=cut
2436*/
2437
6224f72b 2438AV*
864dbfa3 2439Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2440{
c4420975 2441 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
7918f24d
NC
2442
2443 PERL_ARGS_ASSERT_GET_AV;
2444
6224f72b
GS
2445 if (create)
2446 return GvAVn(gv);
2447 if (gv)
2448 return GvAV(gv);
7d49f689 2449 return NULL;
6224f72b
GS
2450}
2451
954c1994 2452/*
ccfc67b7
JH
2453=head1 Hash Manipulation Functions
2454
954c1994
GS
2455=for apidoc p||get_hv
2456
2457Returns the HV of the specified Perl hash. If C<create> is set and the
2458Perl variable does not exist then it will be created. If C<create> is not
2459set and the variable does not exist then NULL is returned.
2460
2461=cut
2462*/
2463
6224f72b 2464HV*
864dbfa3 2465Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2466{
890ce7af 2467 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
7918f24d
NC
2468
2469 PERL_ARGS_ASSERT_GET_HV;
2470
a0d0e21e
LW
2471 if (create)
2472 return GvHVn(gv);
2473 if (gv)
2474 return GvHV(gv);
5c284bb0 2475 return NULL;
a0d0e21e
LW
2476}
2477
954c1994 2478/*
ccfc67b7
JH
2479=head1 CV Manipulation Functions
2480
780a5241
NC
2481=for apidoc p||get_cvn_flags
2482
2483Returns the CV of the specified Perl subroutine. C<flags> are passed to
2484C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2485exist then it will be declared (which has the same effect as saying
2486C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2487then NULL is returned.
2488
954c1994
GS
2489=for apidoc p||get_cv
2490
780a5241 2491Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2492
2493=cut
2494*/
2495
a0d0e21e 2496CV*
780a5241 2497Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2498{
780a5241 2499 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2500 /* XXX this is probably not what they think they're getting.
2501 * It has the same effect as "sub name;", i.e. just a forward
2502 * declaration! */
7918f24d
NC
2503
2504 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2505
780a5241 2506 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2507 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2508 return newSUB(start_subparse(FALSE, 0),
780a5241 2509 newSVOP(OP_CONST, 0, sv),
5f66b61c 2510 NULL, NULL);
780a5241 2511 }
a0d0e21e 2512 if (gv)
8ebc5c01 2513 return GvCVu(gv);
601f1833 2514 return NULL;
a0d0e21e
LW
2515}
2516
780a5241
NC
2517CV*
2518Perl_get_cv(pTHX_ const char *name, I32 flags)
2519{
7918f24d
NC
2520 PERL_ARGS_ASSERT_GET_CV;
2521
780a5241
NC
2522 return get_cvn_flags(name, strlen(name), flags);
2523}
2524
79072805
LW
2525/* Be sure to refetch the stack pointer after calling these routines. */
2526
954c1994 2527/*
ccfc67b7
JH
2528
2529=head1 Callback Functions
2530
954c1994
GS
2531=for apidoc p||call_argv
2532
2533Performs a callback to the specified Perl sub. See L<perlcall>.
2534
2535=cut
2536*/
2537
a0d0e21e 2538I32
8f42b153 2539Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2540
8ac85365
NIS
2541 /* See G_* flags in cop.h */
2542 /* null terminated arg list */
8990e307 2543{
97aff369 2544 dVAR;
a0d0e21e 2545 dSP;
8990e307 2546
7918f24d
NC
2547 PERL_ARGS_ASSERT_CALL_ARGV;
2548
924508f0 2549 PUSHMARK(SP);
a0d0e21e 2550 if (argv) {
8990e307 2551 while (*argv) {
6e449a3a 2552 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2553 argv++;
2554 }
a0d0e21e 2555 PUTBACK;
8990e307 2556 }
864dbfa3 2557 return call_pv(sub_name, flags);
8990e307
LW
2558}
2559
954c1994
GS
2560/*
2561=for apidoc p||call_pv
2562
2563Performs a callback to the specified Perl sub. See L<perlcall>.
2564
2565=cut
2566*/
2567
a0d0e21e 2568I32
864dbfa3 2569Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2570 /* name of the subroutine */
2571 /* See G_* flags in cop.h */
a0d0e21e 2572{
7918f24d
NC
2573 PERL_ARGS_ASSERT_CALL_PV;
2574
864dbfa3 2575 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2576}
2577
954c1994
GS
2578/*
2579=for apidoc p||call_method
2580
2581Performs a callback to the specified Perl method. The blessed object must
2582be on the stack. See L<perlcall>.
2583
2584=cut
2585*/
2586
a0d0e21e 2587I32
864dbfa3 2588Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2589 /* name of the subroutine */
2590 /* See G_* flags in cop.h */
a0d0e21e 2591{
7918f24d
NC
2592 PERL_ARGS_ASSERT_CALL_METHOD;
2593
968b3946 2594 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2595}
2596
2597/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2598/*
2599=for apidoc p||call_sv
2600
2601Performs a callback to the Perl sub whose name is in the SV. See
2602L<perlcall>.
2603
2604=cut
2605*/
2606
a0d0e21e 2607I32
001d637e 2608Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2609 /* See G_* flags in cop.h */
a0d0e21e 2610{
27da23d5 2611 dVAR; dSP;
a0d0e21e 2612 LOGOP myop; /* fake syntax tree node */
968b3946 2613 UNOP method_op;
aa689395 2614 I32 oldmark;
8ea43dc8 2615 VOL I32 retval = 0;
a0d0e21e 2616 I32 oldscope;
54310121 2617 bool oldcatch = CATCH_GET;
6224f72b 2618 int ret;
c4420975 2619 OP* const oldop = PL_op;
db36c5a1 2620 dJMPENV;
1e422769 2621
7918f24d
NC
2622 PERL_ARGS_ASSERT_CALL_SV;
2623
a0d0e21e
LW
2624 if (flags & G_DISCARD) {
2625 ENTER;
2626 SAVETMPS;
2627 }
2f8edad0
NC
2628 if (!(flags & G_WANT)) {
2629 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2630 */
2631 flags |= G_SCALAR;
2632 }
a0d0e21e 2633
aa689395 2634 Zero(&myop, 1, LOGOP);
5f66b61c 2635 myop.op_next = NULL;
f51d4af5 2636 if (!(flags & G_NOARGS))
aa689395 2637 myop.op_flags |= OPf_STACKED;
4f911530 2638 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2639 SAVEOP();
533c011a 2640 PL_op = (OP*)&myop;
aa689395 2641
3280af22
NIS
2642 EXTEND(PL_stack_sp, 1);
2643 *++PL_stack_sp = sv;
aa689395 2644 oldmark = TOPMARK;
3280af22 2645 oldscope = PL_scopestack_ix;
a0d0e21e 2646
3280af22 2647 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2648 /* Handle first BEGIN of -d. */
3280af22 2649 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2650 /* Try harder, since this may have been a sighandler, thus
2651 * curstash may be meaningless. */
ea726b52 2652 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2653 && !(flags & G_NODEBUG))
533c011a 2654 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2655
968b3946
GS
2656 if (flags & G_METHOD) {
2657 Zero(&method_op, 1, UNOP);
2658 method_op.op_next = PL_op;
2659 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2660 method_op.op_type = OP_METHOD;
968b3946 2661 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2662 myop.op_type = OP_ENTERSUB;
f39d0b86 2663 PL_op = (OP*)&method_op;
968b3946
GS
2664 }
2665
312caa8e 2666 if (!(flags & G_EVAL)) {
0cdb2077 2667 CATCH_SET(TRUE);
d6f07c05 2668 CALL_BODY_SUB((OP*)&myop);
312caa8e 2669 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2670 CATCH_SET(oldcatch);
312caa8e
CS
2671 }
2672 else {
d78bda3d 2673 myop.op_other = (OP*)&myop;
3280af22 2674 PL_markstack_ptr--;
edb2152a 2675 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2676 PL_markstack_ptr++;
a0d0e21e 2677
14dd3ad8 2678 JMPENV_PUSH(ret);
edb2152a 2679
6224f72b
GS
2680 switch (ret) {
2681 case 0:
14dd3ad8 2682 redo_body:
d6f07c05 2683 CALL_BODY_SUB((OP*)&myop);
312caa8e 2684 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2685 if (!(flags & G_KEEPERR)) {
ab69dbc2 2686 CLEAR_ERRSV();
8433848b 2687 }
a0d0e21e 2688 break;
6224f72b 2689 case 1:
f86702cc 2690 STATUS_ALL_FAILURE;
a0d0e21e 2691 /* FALL THROUGH */
6224f72b 2692 case 2:
a0d0e21e 2693 /* my_exit() was called */
3280af22 2694 PL_curstash = PL_defstash;
a0d0e21e 2695 FREETMPS;
14dd3ad8 2696 JMPENV_POP;
cc3604b1 2697 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2698 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2699 my_exit_jump();
a0d0e21e 2700 /* NOTREACHED */
6224f72b 2701 case 3:
3280af22 2702 if (PL_restartop) {
533c011a 2703 PL_op = PL_restartop;
3280af22 2704 PL_restartop = 0;
312caa8e 2705 goto redo_body;
a0d0e21e 2706 }
3280af22 2707 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2708 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2709 retval = 0;
2710 else {
2711 retval = 1;
3280af22 2712 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2713 }
312caa8e 2714 break;
a0d0e21e 2715 }
a0d0e21e 2716
edb2152a
NC
2717 if (PL_scopestack_ix > oldscope)
2718 delete_eval_scope();
14dd3ad8 2719 JMPENV_POP;
a0d0e21e 2720 }
1e422769 2721
a0d0e21e 2722 if (flags & G_DISCARD) {
3280af22 2723 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2724 retval = 0;
2725 FREETMPS;
2726 LEAVE;
2727 }
533c011a 2728 PL_op = oldop;
a0d0e21e
LW
2729 return retval;
2730}
2731
6e72f9df 2732/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2733
954c1994
GS
2734/*
2735=for apidoc p||eval_sv
2736
2737Tells Perl to C<eval> the string in the SV.
2738
2739=cut
2740*/
2741
a0d0e21e 2742I32
864dbfa3 2743Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2744
8ac85365 2745 /* See G_* flags in cop.h */
a0d0e21e 2746{
97aff369 2747 dVAR;
924508f0 2748 dSP;
a0d0e21e 2749 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2750 VOL I32 oldmark = SP - PL_stack_base;
2751 VOL I32 retval = 0;
6224f72b 2752 int ret;
c4420975 2753 OP* const oldop = PL_op;
db36c5a1 2754 dJMPENV;
84902520 2755
7918f24d
NC
2756 PERL_ARGS_ASSERT_EVAL_SV;
2757
4633a7c4
LW
2758 if (flags & G_DISCARD) {
2759 ENTER;
2760 SAVETMPS;
2761 }
2762
462e5cf6 2763 SAVEOP();
533c011a
NIS
2764 PL_op = (OP*)&myop;
2765 Zero(PL_op, 1, UNOP);
3280af22
NIS
2766 EXTEND(PL_stack_sp, 1);
2767 *++PL_stack_sp = sv;
79072805 2768
4633a7c4
LW
2769 if (!(flags & G_NOARGS))
2770 myop.op_flags = OPf_STACKED;
5f66b61c 2771 myop.op_next = NULL;
6e72f9df 2772 myop.op_type = OP_ENTEREVAL;
4f911530 2773 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2774 if (flags & G_KEEPERR)
2775 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2776
dedbcade
DM
2777 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2778 * before a PUSHEVAL, which corrupts the stack after a croak */
2779 TAINT_PROPER("eval_sv()");
2780
14dd3ad8 2781 JMPENV_PUSH(ret);
6224f72b
GS
2782 switch (ret) {
2783 case 0:
14dd3ad8 2784 redo_body:
d6f07c05 2785 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2786 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2787 if (!(flags & G_KEEPERR)) {
ab69dbc2 2788 CLEAR_ERRSV();
8433848b 2789 }
4633a7c4 2790 break;
6224f72b 2791 case 1:
f86702cc 2792 STATUS_ALL_FAILURE;
4633a7c4 2793 /* FALL THROUGH */
6224f72b 2794 case 2:
4633a7c4 2795 /* my_exit() was called */
3280af22 2796 PL_curstash = PL_defstash;
4633a7c4 2797 FREETMPS;
14dd3ad8 2798 JMPENV_POP;
cc3604b1 2799 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2800 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2801 my_exit_jump();
4633a7c4 2802 /* NOTREACHED */
6224f72b 2803 case 3:
3280af22 2804 if (PL_restartop) {
533c011a 2805 PL_op = PL_restartop;
3280af22 2806 PL_restartop = 0;
312caa8e 2807 goto redo_body;
4633a7c4 2808 }
3280af22 2809 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2810 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2811 retval = 0;
2812 else {
2813 retval = 1;
3280af22 2814 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2815 }
312caa8e 2816 break;
4633a7c4
LW
2817 }
2818
14dd3ad8 2819 JMPENV_POP;
4633a7c4 2820 if (flags & G_DISCARD) {
3280af22 2821 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2822 retval = 0;
2823 FREETMPS;
2824 LEAVE;
2825 }
533c011a 2826 PL_op = oldop;
4633a7c4
LW
2827 return retval;
2828}
2829
954c1994
GS
2830/*
2831=for apidoc p||eval_pv
2832
2833Tells Perl to C<eval> the given string and return an SV* result.
2834
2835=cut
2836*/
2837
137443ea 2838SV*
864dbfa3 2839Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2840{
97aff369 2841 dVAR;
137443ea
PP
2842 dSP;
2843 SV* sv = newSVpv(p, 0);
2844
7918f24d
NC
2845 PERL_ARGS_ASSERT_EVAL_PV;
2846
864dbfa3 2847 eval_sv(sv, G_SCALAR);
137443ea
PP
2848 SvREFCNT_dec(sv);
2849
2850 SPAGAIN;
2851 sv = POPs;
2852 PUTBACK;
2853
2d8e6c8d 2854 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2855 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2856 }
137443ea
PP
2857
2858 return sv;
2859}
2860
4633a7c4
LW
2861/* Require a module. */
2862
954c1994 2863/*
ccfc67b7
JH
2864=head1 Embedding Functions
2865
954c1994
GS
2866=for apidoc p||require_pv
2867
7d3fb230
BS
2868Tells Perl to C<require> the file named by the string argument. It is
2869analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2870implemented that way; consider using load_module instead.
954c1994 2871
7d3fb230 2872=cut */
954c1994 2873
4633a7c4 2874void
864dbfa3 2875Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2876{
97aff369 2877 dVAR;
d3acc0f7 2878 dSP;
97aff369 2879 SV* sv;
7918f24d
NC
2880
2881 PERL_ARGS_ASSERT_REQUIRE_PV;
2882
e788e7d3 2883 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2884 PUTBACK;
be41e5d9
NC
2885 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2886 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2887 SPAGAIN;
2888 POPSTACK;
79072805
LW
2889}
2890
79072805 2891void
e1ec3a88 2892Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2893{
71315bf2 2894 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2895
7918f24d
NC
2896 PERL_ARGS_ASSERT_MAGICNAME;
2897
c4420975 2898 if (gv)
14befaf4 2899 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2900}
2901
76e3520e 2902STATIC void
e1ec3a88 2903S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2904{
ab821d7f 2905 /* This message really ought to be max 23 lines.
75c72d73 2906 * Removed -h because the user already knows that option. Others? */
fb73857a 2907
27da23d5 2908 static const char * const usage_msg[] = {
aefc56c5 2909"-0[octal] specify record separator (\\0, if no argument)",
aefc56c5
SF
2910"-a autosplit mode with -n or -p (splits $_ into @F)",
2911"-C[number/list] enables the listed Unicode features",
2912"-c check syntax only (runs BEGIN and CHECK blocks)",
2913"-d[:debugger] run program under debugger",
2914"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2915"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2916"-E program like -e, but enables all optional features",
aefc56c5 2917"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2918"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2919"-i[extension] edit <> files in place (makes backup if extension supplied)",
2920"-Idirectory specify @INC/#include directory (several -I's allowed)",
2921"-l[octal] enable line ending processing, specifies line terminator",
2922"-[mM][-]module execute \"use/no module...\" before executing program",
2923"-n assume \"while (<>) { ... }\" loop around program",
2924"-p assume loop like -n but print line also, like sed",
aefc56c5
SF
2925"-s enable rudimentary parsing for switches after programfile",
2926"-S look for programfile using PATH environment variable",
2927"-t enable tainting warnings",
2928"-T enable tainting checks",
2929"-u dump core after parsing program",
2930"-U allow unsafe operations",
2931"-v print version, subversion (includes VERY IMPORTANT perl info)",
2932"-V[:variable] print configuration summary (or a single Config.pm variable)",
2933"-w enable many useful warnings (RECOMMENDED)",
2934"-W enable all warnings",
2935"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2936"-X disable all warnings",
fb73857a
PP
2937"\n",
2938NULL
2939};
27da23d5 2940 const char * const *p = usage_msg;
fb73857a 2941
7918f24d
NC
2942 PERL_ARGS_ASSERT_USAGE;
2943
b0e47665
GS
2944 PerlIO_printf(PerlIO_stdout(),
2945 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2946 name);
fb73857a 2947 while (*p)
b0e47665 2948 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2949}
2950
b4ab917c
DM
2951/* convert a string of -D options (or digits) into an int.
2952 * sets *s to point to the char after the options */
2953
2954#ifdef DEBUGGING
2955int
e1ec3a88 2956Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2957{
27da23d5 2958 static const char * const usage_msgd[] = {
e6e64d9b
JC
2959 " Debugging flag values: (see also -d)",
2960 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2961 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2962 " l Context (loop) stack processing",
2963 " t Trace execution",
2964 " o Method and overloading resolution",
2965 " c String/numeric conversions",
4c84d7f2 2966 " P Print profiling info, source file input state",
d7a2c63c 2967 " m Memory and SV allocation",
e6e64d9b
JC
2968 " f Format processing",
2969 " r Regular expression parsing and execution",
2970 " x Syntax tree dump",
3679267a 2971 " u Tainting checks",
e6e64d9b
JC
2972 " H Hash dump -- usurps values()",
2973 " X Scratchpad allocation",
2974 " D Cleaning up",
e6e64d9b
JC
2975 " T Tokenising",
2976 " R Include reference counts of dumped variables (eg when using -Ds)",
2977 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2978 " v Verbose: use in conjunction with other flags",
2979 " C Copy On Write",
2980 " A Consistency checks on internal structures",
3679267a 2981 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2982 NULL
2983 };
b4ab917c 2984 int i = 0;
7918f24d
NC
2985
2986 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2987
b4ab917c
DM
2988 if (isALPHA(**s)) {
2989 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2990 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2991
2992 for (; isALNUM(**s); (*s)++) {
c4420975 2993 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2994 if (d)
2995 i |= 1 << (d - debopts);
2996 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2997 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2998 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2999 }
3000 }
e6e64d9b 3001 else if (isDIGIT(**s)) {
b4ab917c
DM
3002 i = atoi(*s);
3003 for (; isALNUM(**s); (*s)++) ;
3004 }
ddcf8bc1 3005 else if (givehelp) {
06e869a4 3006 const char *const *p = usage_msgd;
e6e64d9b
JC
3007 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
3008 }
b4ab917c
DM
3009# ifdef EBCDIC
3010 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3011 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3012 "-Dp not implemented on this platform\n");
3013# endif
3014 return i;
3015}
3016#endif
3017
79072805
LW
3018/* This routine handles any switches that can be given during run */
3019
c7030b81
NC
3020const char *
3021Perl_moreswitches(pTHX_ const char *s)
79072805 3022{
27da23d5 3023 dVAR;
84c133a0 3024 UV rschar;
0544e6df 3025 const char option = *s; /* used to remember option in -m/-M code */
79072805 3026
7918f24d
NC
3027 PERL_ARGS_ASSERT_MORESWITCHES;
3028
79072805
LW
3029 switch (*s) {
3030 case '0':
a863c7d1 3031 {
f2095865 3032 I32 flags = 0;
a3b680e6 3033 STRLEN numlen;
f2095865
JH
3034
3035 SvREFCNT_dec(PL_rs);
3036 if (s[1] == 'x' && s[2]) {
a3b680e6 3037 const char *e = s+=2;
f2095865
JH
3038 U8 *tmps;
3039
a3b680e6
AL
3040 while (*e)
3041 e++;
f2095865
JH
3042 numlen = e - s;
3043 flags = PERL_SCAN_SILENT_ILLDIGIT;
3044 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3045 if (s + numlen < e) {
3046 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3047 numlen = 0;
3048 s--;
3049 }
396482e1 3050 PL_rs = newSVpvs("");
c5661c80 3051 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3052 tmps = (U8*)SvPVX(PL_rs);
3053 uvchr_to_utf8(tmps, rschar);
3054 SvCUR_set(PL_rs, UNISKIP(rschar));
3055 SvUTF8_on(PL_rs);
3056 }
3057 else {
3058 numlen = 4;
3059 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3060 if (rschar & ~((U8)~0))
3061 PL_rs = &PL_sv_undef;
3062 else if (!rschar && numlen >= 2)
396482e1 3063 PL_rs = newSVpvs("");
f2095865
JH
3064 else {
3065 char ch = (char)rschar;
3066 PL_rs = newSVpvn(&ch, 1);
3067 }
3068 }
800633c3 3069 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3070 return s + numlen;
a863c7d1 3071 }
46487f74 3072 case 'C':
a05d7ebb 3073 s++;
dd374669 3074 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3075 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3076 PL_utf8cache = -1;
46487f74 3077 return s;
2304df62 3078 case 'F':
3280af22 3079 PL_minus_F = TRUE;
ebce5377
RGS
3080 PL_splitstr = ++s;
3081 while (*s && !isSPACE(*s)) ++s;
e49e380e 3082 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3083 return s;
79072805 3084 case 'a':
3280af22 3085 PL_minus_a = TRUE;
79072805
LW
3086 s++;
3087 return s;
3088 case 'c':
3280af22 3089 PL_minus_c = TRUE;
79072805
LW
3090 s++;
3091 return s;
3092 case 'd':
f20b2998 3093 forbid_setid('d', FALSE);
4633a7c4 3094 s++;
2cbb2ee1
RGS
3095
3096 /* -dt indicates to the debugger that threads will be used */
3097 if (*s == 't' && !isALNUM(s[1])) {
3098 ++s;
3099 my_setenv("PERL5DB_THREADED", "1");
3100 }
3101
70c94a19
RR
3102 /* The following permits -d:Mod to accepts arguments following an =
3103 in the fashion that -MSome::Mod does. */
3104 if (*s == ':' || *s == '=') {
f85893a1
NC
3105 const char *start = ++s;
3106 const char *const end = s + strlen(s);
396482e1 3107 SV * const sv = newSVpvs("use Devel::");
f85893a1 3108
70c94a19
RR
3109 /* We now allow -d:Module=Foo,Bar */
3110 while(isALNUM(*s) || *s==':') ++s;
3111 if (*s != '=')
f85893a1 3112 sv_catpvn(sv, start, end - start);
70c94a19
RR
3113 else {
3114 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3115 /* Don't use NUL as q// delimiter here, this string goes in the
3116 * environment. */
3117 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3118 }
f85893a1 3119 s = end;
184f32ec 3120 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3121 SvREFCNT_dec(sv);
4633a7c4 3122 }
ed094faf 3123 if (!PL_perldb) {
3280af22 3124 PL_perldb = PERLDB_ALL;
a0d0e21e 3125 init_debugger();
ed094faf 3126 }
79072805
LW
3127 return s;
3128 case 'D':
0453d815 3129 {
79072805 3130#ifdef DEBUGGING
f20b2998 3131 forbid_setid('D', FALSE);
b4ab917c 3132 s++;
dd374669 3133 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3134#else /* !DEBUGGING */
0453d815 3135 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3136 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3137 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3138 for (s++; isALNUM(*s); s++) ;
79072805 3139#endif
79072805 3140 return s;
0453d815 3141 }
4633a7c4 3142 case 'h':
ac27b0f5 3143 usage(PL_origargv[0]);
7ca617d0 3144 my_exit(0);
79072805 3145 case 'i':
43c5f42d 3146 Safefree(PL_inplace);
c030f24b
GH
3147#if defined(__CYGWIN__) /* do backup extension automagically */
3148 if (*(s+1) == '\0') {
c86a4f2e 3149 PL_inplace = savepvs(".bak");
c030f24b
GH
3150 return s+1;
3151 }
3152#endif /* __CYGWIN__ */
5ef5d758 3153 {
d4c19fe8 3154 const char * const start = ++s;
5ef5d758
NC
3155 while (*s && !isSPACE(*s))
3156 ++s;
3157
3158 PL_inplace = savepvn(start, s - start);
3159 }
7b8d334a 3160 if (*s) {
5ef5d758 3161 ++s;
7b8d334a 3162 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3163 s++;
7b8d334a 3164 }
fb73857a 3165 return s;
4e49a025 3166 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3167 forbid_setid('I', FALSE);
fb73857a
PP
3168 ++s;
3169 while (*s && isSPACE(*s))
3170 ++s;
3171 if (*s) {
c7030b81 3172 const char *e, *p;
0df16ed7
GS
3173 p = s;
3174 /* ignore trailing spaces (possibly followed by other switches) */
3175 do {
3176 for (e = p; *e && !isSPACE(*e); e++) ;
3177 p = e;
3178 while (isSPACE(*p))
3179 p++;
3180 } while (*p && *p != '-');
3181 e = savepvn(s, e-s);
88fe16b2 3182 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3183 Safefree(e);
3184 s = p;
3185 if (*s == '-')
3186 s++;
79072805
LW
3187 }
3188 else
a67e862a 3189 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3190 return s;
79072805 3191 case 'l':
3280af22 3192 PL_minus_l = TRUE;
79072805 3193 s++;
7889fe52
NIS
3194 if (PL_ors_sv) {
3195 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3196 PL_ors_sv = NULL;
7889fe52 3197 }
79072805 3198 if (isDIGIT(*s)) {
53305cf1 3199 I32 flags = 0;
a3b680e6 3200 STRLEN numlen;
396482e1 3201 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3202 numlen = 3 + (*s == '0');
3203 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3204 s += numlen;
3205 }
3206 else {
8bfdd7d9 3207 if (RsPARA(PL_rs)) {
396482e1 3208 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3209 }
3210 else {
8bfdd7d9 3211 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3212 }
79072805
LW
3213 }
3214 return s;
1a30305b 3215 case 'M':
f20b2998 3216 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3217 /* FALL THROUGH */
3218 case 'm':
f20b2998 3219 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3220 if (*++s) {
c7030b81 3221 const char *start;
b64cb68c 3222 const char *end;
11343788 3223 SV *sv;
e1ec3a88 3224 const char *use = "use ";
0544e6df 3225 bool colon = FALSE;
a5f75d66 3226 /* -M-foo == 'no foo' */
d0043bd1
NC
3227 /* Leading space on " no " is deliberate, to make both
3228 possibilities the same length. */
3229 if (*s == '-') { use = " no "; ++s; }
3230 sv = newSVpvn(use,4);
a5f75d66 3231 start = s;
1a30305b 3232 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3233 while(isALNUM(*s) || *s==':') {
3234 if( *s++ == ':' ) {
3235 if( *s == ':' )
3236 s++;
3237 else
3238 colon = TRUE;
3239 }
3240 }
3241 if (s == start)
3242 Perl_croak(aTHX_ "Module name required with -%c option",
3243 option);
3244 if (colon)
3245 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3246 "contains single ':'",
63da6837 3247 (int)(s - start), start, option);
b64cb68c 3248 end = s + strlen(s);
c07a80fd 3249 if (*s != '=') {
b64cb68c 3250 sv_catpvn(sv, start, end - start);
0544e6df 3251 if (option == 'm') {
c07a80fd 3252 if (*s != '\0')
cea2e8a9 3253 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3254 sv_catpvs( sv, " ()");
c07a80fd
PP
3255 }
3256 } else {
11343788 3257 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3258 /* Use NUL as q''-delimiter. */
3259 sv_catpvs(sv, " split(/,/,q\0");
3260 ++s;
3261 sv_catpvn(sv, s, end - s);
396482e1 3262 sv_catpvs(sv, "\0)");
c07a80fd 3263 }
b64cb68c 3264 s = end;
29a861e7 3265 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3266 }
3267 else
0544e6df 3268 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3269 return s;
79072805 3270 case 'n':
3280af22 3271 PL_minus_n = TRUE;
79072805
LW
3272 s++;
3273 return s;
3274 case 'p':
3280af22 3275 PL_minus_p = TRUE;
79072805
LW
3276 s++;
3277 return s;
3278 case 's':
f20b2998 3279 forbid_setid('s', FALSE);
3280af22 3280 PL_doswitches = TRUE;
79072805
LW
3281 s++;
3282 return s;
6537fe72
MS
3283 case 't':
3284 if (!PL_tainting)
22f7c9c9 3285 TOO_LATE_FOR('t');
6537fe72
MS
3286 s++;
3287 return s;
463ee0b2 3288 case 'T':
3280af22 3289 if (!PL_tainting)
22f7c9c9 3290 TOO_LATE_FOR('T');
463ee0b2
LW
3291 s++;
3292 return s;
79072805 3293 case 'u':
bf4acbe4
GS
3294#ifdef MACOS_TRADITIONAL
3295 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3296#endif
3280af22 3297 PL_do_undump = TRUE;
79072805
LW
3298 s++;
3299 return s;
3300 case 'U':
3280af22 3301 PL_unsafe = TRUE;
79072805
LW
3302 s++;
3303 return s;
3304 case 'v':
d7aa5382 3305 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3306 upg_version(PL_patchlevel, TRUE);
8e9464f1 3307#if !defined(DGUX)
b0e47665 3308 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3309 Perl_form(aTHX_ "\nThis is perl, %"SVf
3310#ifdef PERL_PATCHNUM
3311 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3312#endif
3313 " built for %s",
be2597df 3314 SVfARG(vstringify(PL_patchlevel)),
95b63a38 3315 ARCHNAME));
8e9464f1
JH
3316#else /* DGUX */
3317/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3318 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3319 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3320 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3321 PerlIO_printf(PerlIO_stdout(),
3322 Perl_form(aTHX_ " built under %s at %s %s\n",
3323 OSNAME, __DATE__, __TIME__));
3324 PerlIO_printf(PerlIO_stdout(),
3325 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3326 OSVERS));
8e9464f1
JH
3327#endif /* !DGUX */
3328
fb73857a
PP
3329#if defined(LOCAL_PATCH_COUNT)
3330 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3331 PerlIO_printf(PerlIO_stdout(),
3332 "\n(with %d registered patch%s, "
3333 "see perl -V for more detail)",
bb7a0f54 3334 LOCAL_PATCH_COUNT,
b0e47665 3335 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3336#endif
1a30305b 3337
b0e47665 3338 PerlIO_printf(PerlIO_stdout(),
9be01f29 3339 "\n\nCopyright 1987-2008, Larry Wall\n");
eae9c151
JH
3340#ifdef MACOS_TRADITIONAL
3341 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3342 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3343 "maintained by Chris Nandor\n");
eae9c151 3344#endif
79072805 3345#ifdef MSDOS
b0e47665
GS
3346 PerlIO_printf(PerlIO_stdout(),
3347 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3348#endif
3349#ifdef DJGPP
b0e47665
GS
3350 PerlIO_printf(PerlIO_stdout(),
3351 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3352 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3353#endif
79072805 3354#ifdef OS2
b0e47665
GS
3355 PerlIO_printf(PerlIO_stdout(),
3356 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3357 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3358#endif
79072805 3359#ifdef atarist
b0e47665
GS
3360 PerlIO_printf(PerlIO_stdout(),
3361 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3362#endif
a3f9223b 3363#ifdef __BEOS__
b0e47665
GS
3364 PerlIO_printf(PerlIO_stdout(),
3365 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3366#endif
1d84e8df 3367#ifdef MPE
b0e47665 3368 PerlIO_printf(PerlIO_stdout(),
e583a879 3369 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3370#endif
9d116dd7 3371#ifdef OEMVS
b0e47665
GS
3372 PerlIO_printf(PerlIO_stdout(),
3373 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3374#endif
495c5fdc 3375#ifdef __VOS__
b0e47665 3376 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3377 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3378#endif
092bebab 3379#ifdef __OPEN_VM
b0e47665
GS
3380 PerlIO_printf(PerlIO_stdout(),
3381 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3382#endif
a1a0e61e 3383#ifdef POSIX_BC
b0e47665
GS
3384 PerlIO_printf(PerlIO_stdout(),
3385 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3386#endif
61ae2fbf 3387#ifdef __MINT__
b0e47665
GS
3388 PerlIO_printf(PerlIO_stdout(),
3389 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3390#endif
f83d2536 3391#ifdef EPOC
b0e47665 3392 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3393 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3394#endif
e1caacb4 3395#ifdef UNDER_CE
b475b3e6
JH
3396 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3397 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3398 wce_hitreturn();
3399#endif
a0fd4948 3400#ifdef __SYMBIAN32__
27da23d5
JH
3401 PerlIO_printf(PerlIO_stdout(),
3402 "Symbian port by Nokia, 2004-2005\n");
3403#endif
baed7233
DL
3404#ifdef BINARY_BUILD_NOTICE
3405 BINARY_BUILD_NOTICE;
3406#endif
b0e47665
GS
3407 PerlIO_printf(PerlIO_stdout(),
3408 "\n\
79072805 3409Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3410GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3411Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3412this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3413Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3414 my_exit(0);
79072805 3415 case 'w':
b2e5e6ba 3416 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3417 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3418 }
599cee73
PM
3419 s++;
3420 return s;
3421 case 'W':
ac27b0f5 3422 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3423 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3424 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3425 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3426 s++;
3427 return s;
3428 case 'X':
ac27b0f5 3429 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3430 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3431 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3432 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3433 s++;
3434 return s;
a0d0e21e 3435 case '*':
79072805 3436 case ' ':
d3133c89
NC
3437 while( *s == ' ' )
3438 ++s;
3439 if (s[0] == '-') /* Additional switches on #! line. */
3440 return s+1;
79072805 3441 break;
a0d0e21e 3442 case '-':
79072805 3443 case 0:
51882d45 3444#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3445 case '\r':
3446#endif
79072805
LW
3447 case '\n':
3448 case '\t':
3449 break;
aa689395
PP
3450#ifdef ALTERNATE_SHEBANG
3451 case 'S': /* OS/2 needs -S on "extproc" line. */
3452 break;
3453#endif
79072805 3454 default:
cea2e8a9 3455 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3456 }
bd61b366 3457 return NULL;
79072805
LW
3458}
3459
3460/* compliments of Tom Christiansen */
3461
3462/* unexec() can be found in the Gnu emacs distribution */
ee580363 3463/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3464
3465void
864dbfa3 3466Perl_my_unexec(pTHX)
79072805 3467{
b37c2d43 3468 PERL_UNUSED_CONTEXT;
79072805 3469#ifdef UNEXEC
b37c2d43
AL
3470 SV * prog = newSVpv(BIN_EXP, 0);
3471 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3472 int status = 1;
79072805
LW
3473 extern int etext;
3474
396482e1 3475 sv_catpvs(prog, "/perl");
396482e1 3476 sv_catpvs(file, ".perldump");
79072805 3477
ee580363
GS
3478 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3479 /* unexec prints msg to stderr in case of failure */
6ad3d225 3480 PerlProc_exit(status);
79072805 3481#else
a5f75d66
AD
3482# ifdef VMS
3483# include <lib$routines.h>
3484 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3485# elif defined(WIN32) || defined(__CYGWIN__)
3486 Perl_croak(aTHX_ "dump is not supported");
aa689395 3487# else
79072805 3488 ABORT(); /* for use with undump */
aa689395 3489# endif
a5f75d66 3490#endif
79072805
LW
3491}
3492
cb68f92d
GS
3493/* initialize curinterp */
3494STATIC void
cea2e8a9 3495S_init_interp(pTHX)
cb68f92d 3496{
97aff369 3497 dVAR;
acfe0abc
GS
3498#ifdef MULTIPLICITY
3499# define PERLVAR(var,type)
3500# define PERLVARA(var,n,type)
3501# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3502# define PERLVARI(var,type,init) aTHX->var = init;
3503# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3504# else
acfe0abc
GS
3505# define PERLVARI(var,typ