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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
a0d0e21e 11/*
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12 * A ship then new they built for him
13 * of mithril and of elven-glass
14 * --from Bilbo's song of Eärendil
15 *
16 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 17 */
45d8adaa 18
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19/* This file contains the top-level functions that are used to create, use
20 * and destroy a perl interpreter, plus the functions used by XS code to
21 * call back into perl. Note that it does not contain the actual main()
ddfa107c 22 * function of the interpreter; that can be found in perlmain.c
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23 */
24
ae3f3efd
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25/* PSz 12 Nov 03
26 *
27 * Be proud that perl(1) may proclaim:
28 * Setuid Perl scripts are safer than C programs ...
29 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
30 *
31 * The flow was: perl starts, notices script is suid, execs suidperl with same
32 * arguments; suidperl opens script, checks many things, sets itself with
33 * right UID, execs perl with similar arguments but with script pre-opened on
34 * /dev/fd/xxx; perl checks script is as should be and does work. This was
35 * insecure: see perlsec(1) for many problems with this approach.
36 *
37 * The "correct" flow should be: perl starts, opens script and notices it is
38 * suid, checks many things, execs suidperl with similar arguments but with
39 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
40 * same, checks arguments match #! line, sets itself with right UID, execs
41 * perl with same arguments; perl checks many things and does work.
42 *
43 * (Opening the script in perl instead of suidperl, we "lose" scripts that
44 * are readable to the target UID but not to the invoker. Where did
45 * unreadable scripts work anyway?)
46 *
47 * For now, suidperl and perl are pretty much the same large and cumbersome
48 * program, so suidperl can check its argument list (see comments elsewhere).
49 *
50 * References:
51 * Original bug report:
52 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
53 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
54 * Comments and discussion with Debian:
55 * http://bugs.debian.org/203426
56 * http://bugs.debian.org/220486
57 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
58 * http://www.debian.org/security/2004/dsa-431
59 * CVE candidate:
60 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
61 * Previous versions of this patch sent to perl5-porters:
62 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
63 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
64 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
65 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
66 *
67Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
68School of Mathematics and Statistics University of Sydney 2006 Australia
69 *
70 */
71/* PSz 13 Nov 03
72 * Use truthful, neat, specific error messages.
73 * Cannot always hide the truth; security must not depend on doing so.
74 */
75
76/* PSz 18 Feb 04
77 * Use global(?), thread-local fdscript for easier checks.
78 * (I do not understand how we could possibly get a thread race:
79 * do not all threads go through the same initialization? Or in
80 * fact, are not threads started only after we get the script and
81 * so know what to do? Oh well, make things super-safe...)
82 */
83
378cc40b 84#include "EXTERN.h"
864dbfa3 85#define PERL_IN_PERL_C
378cc40b 86#include "perl.h"
e3321bb0 87#include "patchlevel.h" /* for local_patches */
378cc40b 88
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89#ifdef NETWARE
90#include "nwutil.h"
91char *nw_get_sitelib(const char *pl);
92#endif
93
df5cef82 94/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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95#ifdef I_UNISTD
96#include <unistd.h>
97#endif
a0d0e21e 98
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99#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
100# ifdef I_SYS_WAIT
101# include <sys/wait.h>
102# endif
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103# ifdef I_SYSUIO
104# include <sys/uio.h>
105# endif
106
107union control_un {
108 struct cmsghdr cm;
109 char control[CMSG_SPACE(sizeof(int))];
110};
111
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112#endif
113
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114#ifdef __BEOS__
115# define HZ 1000000
116#endif
117
118#ifndef HZ
119# ifdef CLK_TCK
120# define HZ CLK_TCK
121# else
122# define HZ 60
123# endif
124#endif
125
7114a2d2 126#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 127char *getenv (char *); /* Usually in <stdlib.h> */
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128#endif
129
acfe0abc 130static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 131
a687059c 132#ifdef DOSUID
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133# ifdef IAMSUID
134/* Drop scriptname */
135# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ validarg, fdscript, suidscript, linestr_sv, rsfp)
136# else
137/* Drop suidscript */
138# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ validarg, scriptname, fdscript, linestr_sv, rsfp)
139# endif
140#else
141# ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
142/* Drop everything. Heck, don't even try to call it */
143# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
144# else
145/* Drop almost everything */
146# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
147# endif
a687059c 148#endif
8d063cd8 149
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150#define CALL_BODY_EVAL(myop) \
151 if (PL_op == (myop)) \
139d0ce6 152 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX); \
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153 if (PL_op) \
154 CALLRUNOPS(aTHX);
155
156#define CALL_BODY_SUB(myop) \
157 if (PL_op == (myop)) \
139d0ce6 158 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
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159 if (PL_op) \
160 CALLRUNOPS(aTHX);
161
162#define CALL_LIST_BODY(cv) \
163 PUSHMARK(PL_stack_sp); \
ad64d0ec 164 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
d6f07c05 165
e6827a76 166static void
daa7d858 167S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 168{
27da23d5 169 dVAR;
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170 if (!PL_curinterp) {
171 PERL_SET_INTERP(my_perl);
3db8f154 172#if defined(USE_ITHREADS)
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173 INIT_THREADS;
174 ALLOC_THREAD_KEY;
175 PERL_SET_THX(my_perl);
176 OP_REFCNT_INIT;
71ad1b0c 177 HINTS_REFCNT_INIT;
e6827a76 178 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 179# endif
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180#ifdef PERL_IMPLICIT_CONTEXT
181 MUTEX_INIT(&PL_my_ctx_mutex);
182# endif
e6827a76 183 }
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184#if defined(USE_ITHREADS)
185 else
186#else
187 /* This always happens for non-ithreads */
188#endif
189 {
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190 PERL_SET_THX(my_perl);
191 }
192}
06d86050 193
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194
195/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
196
197void
198Perl_sys_init(int* argc, char*** argv)
199{
4fc0badb 200 dVAR;
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201
202 PERL_ARGS_ASSERT_SYS_INIT;
203
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204 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
205 PERL_UNUSED_ARG(argv);
206 PERL_SYS_INIT_BODY(argc, argv);
207}
208
209void
210Perl_sys_init3(int* argc, char*** argv, char*** env)
211{
4fc0badb 212 dVAR;
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213
214 PERL_ARGS_ASSERT_SYS_INIT3;
215
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216 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
217 PERL_UNUSED_ARG(argv);
218 PERL_UNUSED_ARG(env);
219 PERL_SYS_INIT3_BODY(argc, argv, env);
220}
221
222void
d0820ef1 223Perl_sys_term()
cbec8ebe 224{
4fc0badb 225 dVAR;
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226 if (!PL_veto_cleanup) {
227 PERL_SYS_TERM_BODY();
228 }
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229}
230
231
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232#ifdef PERL_IMPLICIT_SYS
233PerlInterpreter *
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234perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
235 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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236 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
237 struct IPerlDir* ipD, struct IPerlSock* ipS,
238 struct IPerlProc* ipP)
239{
240 PerlInterpreter *my_perl;
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241
242 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
243
9f653bb5 244 /* Newx() needs interpreter, so call malloc() instead */
32e30700 245 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 246 S_init_tls_and_interp(my_perl);
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247 Zero(my_perl, 1, PerlInterpreter);
248 PL_Mem = ipM;
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249 PL_MemShared = ipMS;
250 PL_MemParse = ipMP;
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251 PL_Env = ipE;
252 PL_StdIO = ipStd;
253 PL_LIO = ipLIO;
254 PL_Dir = ipD;
255 PL_Sock = ipS;
256 PL_Proc = ipP;
7cb608b5 257 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 258
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259 return my_perl;
260}
261#else
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262
263/*
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264=head1 Embedding Functions
265
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266=for apidoc perl_alloc
267
268Allocates a new Perl interpreter. See L<perlembed>.
269
270=cut
271*/
272
93a17b20 273PerlInterpreter *
cea2e8a9 274perl_alloc(void)
79072805 275{
cea2e8a9 276 PerlInterpreter *my_perl;
79072805 277
9f653bb5 278 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 279 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 280
e6827a76 281 S_init_tls_and_interp(my_perl);
7cb608b5 282#ifndef PERL_TRACK_MEMPOOL
07409e01 283 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
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284#else
285 Zero(my_perl, 1, PerlInterpreter);
286 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
287 return my_perl;
288#endif
79072805 289}
32e30700 290#endif /* PERL_IMPLICIT_SYS */
79072805 291
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292/*
293=for apidoc perl_construct
294
295Initializes a new Perl interpreter. See L<perlembed>.
296
297=cut
298*/
299
79072805 300void
0cb96387 301perl_construct(pTHXx)
79072805 302{
27da23d5 303 dVAR;
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304
305 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
306
8990e307 307#ifdef MULTIPLICITY
54aff467 308 init_interp();
ac27b0f5 309 PL_perl_destruct_level = 1;
54aff467 310#else
7918f24d 311 PERL_UNUSED_ARG(my_perl);
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312 if (PL_perl_destruct_level > 0)
313 init_interp();
314#endif
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315 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
316
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317 /* set read-only and try to insure than we wont see REFCNT==0
318 very often */
319
320 SvREADONLY_on(&PL_sv_undef);
321 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
322
323 sv_setpv(&PL_sv_no,PL_No);
324 /* value lookup in void context - happens to have the side effect
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325 of caching the numeric forms. However, as &PL_sv_no doesn't contain
326 a string that is a valid numer, we have to turn the public flags by
327 hand: */
34caed6d 328 SvNV(&PL_sv_no);
c1939273 329 SvIV(&PL_sv_no);
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330 SvIOK_on(&PL_sv_no);
331 SvNOK_on(&PL_sv_no);
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332 SvREADONLY_on(&PL_sv_no);
333 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
334
335 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 336 SvNV(&PL_sv_yes);
c1939273 337 SvIV(&PL_sv_yes);
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338 SvREADONLY_on(&PL_sv_yes);
339 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
340
341 SvREADONLY_on(&PL_sv_placeholder);
342 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
343
344 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 345#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 346 PL_pidstatus = newHV();
ca0c25f6 347#endif
79072805 348
396482e1 349 PL_rs = newSVpvs("\n");
dc92893f 350
cea2e8a9 351 init_stacks();
79072805 352
748a9306 353 init_ids();
a5f75d66 354
312caa8e 355 JMPENV_BOOTSTRAP;
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356 STATUS_ALL_SUCCESS;
357
0672f40e 358 init_i18nl10n(1);
36477c24 359 SET_NUMERIC_STANDARD();
0b5b802d 360
ab821d7f 361#if defined(LOCAL_PATCH_COUNT)
3280af22 362 PL_localpatches = local_patches; /* For possible -v */
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363#endif
364
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365#ifdef HAVE_INTERP_INTERN
366 sys_intern_init();
367#endif
368
3a1ee7e8 369 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 370
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371 PL_fdpid = newAV(); /* for remembering popen pids by fd */
372 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 373 PL_errors = newSVpvs("");
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374 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
375 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
376 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 377#ifdef USE_ITHREADS
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378 /* First entry is a list of empty elements. It needs to be initialised
379 else all hell breaks loose in S_find_uninit_var(). */
380 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 381 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 382#endif
e5dd39fc 383#ifdef USE_REENTRANT_API
59bd0823 384 Perl_reentrant_init(aTHX);
e5dd39fc 385#endif
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386
387 /* Note that strtab is a rather special HV. Assumptions are made
388 about not iterating on it, and not adding tie magic to it.
389 It is properly deallocated in perl_destruct() */
390 PL_strtab = newHV();
391
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392 HvSHAREKEYS_off(PL_strtab); /* mandatory */
393 hv_ksplit(PL_strtab, 512);
394
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395#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
396 _dyld_lookup_and_bind
397 ("__environ", (unsigned long *) &environ_pointer, NULL);
398#endif /* environ */
399
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400#ifndef PERL_MICRO
401# ifdef USE_ENVIRON_ARRAY
0631ea03 402 PL_origenviron = environ;
2f42fcb0 403# endif
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404#endif
405
5311654c 406 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 407 * available or if the sysconf() fails, use the HZ.
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408 * BeOS has those, but returns the wrong value.
409 * The HZ if not originally defined has been by now
410 * been defined as CLK_TCK, if available. */
dbc1d986 411#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
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412 PL_clocktick = sysconf(_SC_CLK_TCK);
413 if (PL_clocktick <= 0)
414#endif
415 PL_clocktick = HZ;
416
081fc587
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417 PL_stashcache = newHV();
418
8cb289bd 419 PL_patchlevel = Perl_newSVpvf(aTHX_ "v%d.%d.%d", (int)PERL_REVISION,
e6830b13 420 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 421
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422#ifdef HAS_MMAP
423 if (!PL_mmap_page_size) {
424#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
425 {
426 SETERRNO(0, SS_NORMAL);
427# ifdef _SC_PAGESIZE
428 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
429# else
430 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
431# endif
432 if ((long) PL_mmap_page_size < 0) {
433 if (errno) {
44f8325f 434 SV * const error = ERRSV;
d4c19fe8 435 SvUPGRADE(error, SVt_PV);
0510663f 436 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
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437 }
438 else
439 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
440 }
441 }
442#else
443# ifdef HAS_GETPAGESIZE
444 PL_mmap_page_size = getpagesize();
445# else
446# if defined(I_SYS_PARAM) && defined(PAGESIZE)
447 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
448# endif
449# endif
450#endif
451 if (PL_mmap_page_size <= 0)
452 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
453 (IV) PL_mmap_page_size);
454 }
455#endif /* HAS_MMAP */
456
457#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
458 PL_timesbase.tms_utime = 0;
459 PL_timesbase.tms_stime = 0;
460 PL_timesbase.tms_cutime = 0;
461 PL_timesbase.tms_cstime = 0;
462#endif
463
a3e6e81e 464 PL_registered_mros = newHV();
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465 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
466 HvMAX(PL_registered_mros) = 0;
a3e6e81e 467
8990e307 468 ENTER;
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469}
470
954c1994 471/*
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472=for apidoc nothreadhook
473
474Stub that provides thread hook for perl_destruct when there are
475no threads.
476
477=cut
478*/
479
480int
4e9e3734 481Perl_nothreadhook(pTHX)
62375a60 482{
96a5add6 483 PERL_UNUSED_CONTEXT;
62375a60
NIS
484 return 0;
485}
486
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NC
487#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
488void
489Perl_dump_sv_child(pTHX_ SV *sv)
490{
491 ssize_t got;
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492 const int sock = PL_dumper_fd;
493 const int debug_fd = PerlIO_fileno(Perl_debug_log);
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494 union control_un control;
495 struct msghdr msg;
808ad2d0 496 struct iovec vec[2];
bf357333 497 struct cmsghdr *cmptr;
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498 int returned_errno;
499 unsigned char buffer[256];
41e4abd8 500
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501 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
502
bf357333 503 if(sock == -1 || debug_fd == -1)
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504 return;
505
506 PerlIO_flush(Perl_debug_log);
507
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508 /* All these shenanigans are to pass a file descriptor over to our child for
509 it to dump out to. We can't let it hold open the file descriptor when it
510 forks, as the file descriptor it will dump to can turn out to be one end
511 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 512 be open, the wait would be forever.) */
bf357333
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513
514 msg.msg_control = control.control;
515 msg.msg_controllen = sizeof(control.control);
516 /* We're a connected socket so we don't need a destination */
517 msg.msg_name = NULL;
518 msg.msg_namelen = 0;
519 msg.msg_iov = vec;
808ad2d0 520 msg.msg_iovlen = 1;
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521
522 cmptr = CMSG_FIRSTHDR(&msg);
523 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
524 cmptr->cmsg_level = SOL_SOCKET;
525 cmptr->cmsg_type = SCM_RIGHTS;
526 *((int *)CMSG_DATA(cmptr)) = 1;
527
528 vec[0].iov_base = (void*)&sv;
529 vec[0].iov_len = sizeof(sv);
530 got = sendmsg(sock, &msg, 0);
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531
532 if(got < 0) {
bf357333 533 perror("Debug leaking scalars parent sendmsg failed");
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534 abort();
535 }
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536 if(got < sizeof(sv)) {
537 perror("Debug leaking scalars parent short sendmsg");
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538 abort();
539 }
540
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541 /* Return protocol is
542 int: errno value
543 unsigned char: length of location string (0 for empty)
544 unsigned char*: string (not terminated)
545 */
546 vec[0].iov_base = (void*)&returned_errno;
547 vec[0].iov_len = sizeof(returned_errno);
548 vec[1].iov_base = buffer;
549 vec[1].iov_len = 1;
550
551 got = readv(sock, vec, 2);
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552
553 if(got < 0) {
554 perror("Debug leaking scalars parent read failed");
808ad2d0 555 PerlIO_flush(PerlIO_stderr());
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NC
556 abort();
557 }
808ad2d0 558 if(got < sizeof(returned_errno) + 1) {
41e4abd8 559 perror("Debug leaking scalars parent short read");
808ad2d0 560 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
561 abort();
562 }
563
808ad2d0
NC
564 if (*buffer) {
565 got = read(sock, buffer + 1, *buffer);
566 if(got < 0) {
567 perror("Debug leaking scalars parent read 2 failed");
568 PerlIO_flush(PerlIO_stderr());
569 abort();
570 }
571
572 if(got < *buffer) {
573 perror("Debug leaking scalars parent short read 2");
574 PerlIO_flush(PerlIO_stderr());
575 abort();
576 }
577 }
578
579 if (returned_errno || *buffer) {
580 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
581 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
582 returned_errno, strerror(returned_errno));
41e4abd8
NC
583 }
584}
585#endif
586
62375a60 587/*
954c1994
GS
588=for apidoc perl_destruct
589
590Shuts down a Perl interpreter. See L<perlembed>.
591
592=cut
593*/
594
31d77e54 595int
0cb96387 596perl_destruct(pTHXx)
79072805 597{
27da23d5 598 dVAR;
be2ea8ed 599 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 600 HV *hv;
2aa47728 601#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
602 pid_t child;
603#endif
8990e307 604
7918f24d
NC
605 PERL_ARGS_ASSERT_PERL_DESTRUCT;
606#ifndef MULTIPLICITY
ed6c66dd 607 PERL_UNUSED_ARG(my_perl);
7918f24d 608#endif
9d4ba2ae 609
7766f137
GS
610 /* wait for all pseudo-forked children to finish */
611 PERL_WAIT_FOR_CHILDREN;
612
3280af22 613 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
614#ifdef DEBUGGING
615 {
9d4ba2ae
AL
616 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
617 if (s) {
e1ec3a88 618 const int i = atoi(s);
5f05dabc
PP
619 if (destruct_level < i)
620 destruct_level = i;
621 }
4633a7c4
LW
622 }
623#endif
624
27da23d5 625 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
626 dJMPENV;
627 int x = 0;
628
629 JMPENV_PUSH(x);
1b6737cc 630 PERL_UNUSED_VAR(x);
f3faeb53
AB
631 if (PL_endav && !PL_minus_c)
632 call_list(PL_scopestack_ix, PL_endav);
633 JMPENV_POP;
26f423df 634 }
f3faeb53 635 LEAVE;
a0d0e21e
LW
636 FREETMPS;
637
e00b64d4 638 /* Need to flush since END blocks can produce output */
f13a2bc0 639 my_fflush_all();
e00b64d4 640
62375a60
NIS
641 if (CALL_FPTR(PL_threadhook)(aTHX)) {
642 /* Threads hook has vetoed further cleanup */
c301d606 643 PL_veto_cleanup = TRUE;
37038d91 644 return STATUS_EXIT;
62375a60
NIS
645 }
646
2aa47728
NC
647#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
648 if (destruct_level != 0) {
649 /* Fork here to create a child. Our child's job is to preserve the
650 state of scalars prior to destruction, so that we can instruct it
651 to dump any scalars that we later find have leaked.
652 There's no subtlety in this code - it assumes POSIX, and it doesn't
653 fail gracefully */
654 int fd[2];
655
656 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
657 perror("Debug leaking scalars socketpair failed");
658 abort();
659 }
660
661 child = fork();
662 if(child == -1) {
663 perror("Debug leaking scalars fork failed");
664 abort();
665 }
666 if (!child) {
667 /* We are the child */
3125a5a4
NC
668 const int sock = fd[1];
669 const int debug_fd = PerlIO_fileno(Perl_debug_log);
670 int f;
808ad2d0
NC
671 const char *where;
672 /* Our success message is an integer 0, and a char 0 */
b61433a9 673 static const char success[sizeof(int) + 1] = {0};
3125a5a4 674
2aa47728 675 close(fd[0]);
2aa47728 676
3125a5a4
NC
677 /* We need to close all other file descriptors otherwise we end up
678 with interesting hangs, where the parent closes its end of a
679 pipe, and sits waiting for (another) child to terminate. Only
680 that child never terminates, because it never gets EOF, because
bf357333
NC
681 we also have the far end of the pipe open. We even need to
682 close the debugging fd, because sometimes it happens to be one
683 end of a pipe, and a process is waiting on the other end for
684 EOF. Normally it would be closed at some point earlier in
685 destruction, but if we happen to cause the pipe to remain open,
686 EOF never occurs, and we get an infinite hang. Hence all the
687 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
688
689 f = sysconf(_SC_OPEN_MAX);
690 if(f < 0) {
808ad2d0
NC
691 where = "sysconf failed";
692 goto abort;
3125a5a4
NC
693 }
694 while (f--) {
695 if (f == sock)
696 continue;
3125a5a4
NC
697 close(f);
698 }
699
2aa47728
NC
700 while (1) {
701 SV *target;
bf357333
NC
702 union control_un control;
703 struct msghdr msg;
704 struct iovec vec[1];
705 struct cmsghdr *cmptr;
706 ssize_t got;
707 int got_fd;
708
709 msg.msg_control = control.control;
710 msg.msg_controllen = sizeof(control.control);
711 /* We're a connected socket so we don't need a source */
712 msg.msg_name = NULL;
713 msg.msg_namelen = 0;
714 msg.msg_iov = vec;
715 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
716
717 vec[0].iov_base = (void*)&target;
718 vec[0].iov_len = sizeof(target);
719
720 got = recvmsg(sock, &msg, 0);
2aa47728
NC
721
722 if(got == 0)
723 break;
724 if(got < 0) {
808ad2d0
NC
725 where = "recv failed";
726 goto abort;
2aa47728
NC
727 }
728 if(got < sizeof(target)) {
808ad2d0
NC
729 where = "short recv";
730 goto abort;
2aa47728 731 }
bf357333 732
808ad2d0
NC
733 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
734 where = "no cmsg";
735 goto abort;
736 }
737 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
738 where = "wrong cmsg_len";
739 goto abort;
740 }
741 if(cmptr->cmsg_level != SOL_SOCKET) {
742 where = "wrong cmsg_level";
743 goto abort;
744 }
745 if(cmptr->cmsg_type != SCM_RIGHTS) {
746 where = "wrong cmsg_type";
747 goto abort;
748 }
bf357333
NC
749
750 got_fd = *(int*)CMSG_DATA(cmptr);
751 /* For our last little bit of trickery, put the file descriptor
752 back into Perl_debug_log, as if we never actually closed it
753 */
808ad2d0
NC
754 if(got_fd != debug_fd) {
755 if (dup2(got_fd, debug_fd) == -1) {
756 where = "dup2";
757 goto abort;
758 }
759 }
2aa47728 760 sv_dump(target);
bf357333 761
2aa47728
NC
762 PerlIO_flush(Perl_debug_log);
763
808ad2d0 764 got = write(sock, &success, sizeof(success));
2aa47728
NC
765
766 if(got < 0) {
808ad2d0
NC
767 where = "write failed";
768 goto abort;
2aa47728 769 }
808ad2d0
NC
770 if(got < sizeof(success)) {
771 where = "short write";
772 goto abort;
2aa47728
NC
773 }
774 }
775 _exit(0);
808ad2d0
NC
776 abort:
777 {
778 int send_errno = errno;
779 unsigned char length = (unsigned char) strlen(where);
780 struct iovec failure[3] = {
781 {(void*)&send_errno, sizeof(send_errno)},
782 {&length, 1},
783 {(void*)where, length}
784 };
785 int got = writev(sock, failure, 3);
786 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
787 in the parent if we try to read from the socketpair after the
788 child has exited, even if there was data to read.
789 So sleep a bit to give the parent a fighting chance of
790 reading the data. */
791 sleep(2);
792 _exit((got == -1) ? errno : 0);
793 }
bf357333 794 /* End of child. */
2aa47728 795 }
41e4abd8 796 PL_dumper_fd = fd[0];
2aa47728
NC
797 close(fd[1]);
798 }
799#endif
800
ff0cee69
PP
801 /* We must account for everything. */
802
803 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
804 /* Do this now, because destroying ops can cause new SVs to be generated
805 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
806 PL_curcop to point to a valid op from which the filename structure
807 member is copied. */
808 PL_curcop = &PL_compiling;
3280af22 809 if (PL_main_root) {
4e380990
DM
810 /* ensure comppad/curpad to refer to main's pad */
811 if (CvPADLIST(PL_main_cv)) {
812 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
813 }
3280af22 814 op_free(PL_main_root);
5f66b61c 815 PL_main_root = NULL;
a0d0e21e 816 }
5f66b61c 817 PL_main_start = NULL;
3280af22 818 SvREFCNT_dec(PL_main_cv);
601f1833 819 PL_main_cv = NULL;
24d3c518 820 PL_dirty = TRUE;
ff0cee69 821
13621cfb
NIS
822 /* Tell PerlIO we are about to tear things apart in case
823 we have layers which are using resources that should
824 be cleaned up now.
825 */
826
827 PerlIO_destruct(aTHX);
828
3280af22 829 if (PL_sv_objcount) {
a0d0e21e
LW
830 /*
831 * Try to destruct global references. We do this first so that the
832 * destructors and destructees still exist. Some sv's might remain.
833 * Non-referenced objects are on their own.
834 */
a0d0e21e 835 sv_clean_objs();
bf9cdc68 836 PL_sv_objcount = 0;
a0de6cf5 837 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 838 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
839 }
840
5cd24f17 841 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 842 SvREFCNT_dec(PL_warnhook);
a0714e2c 843 PL_warnhook = NULL;
3280af22 844 SvREFCNT_dec(PL_diehook);
a0714e2c 845 PL_diehook = NULL;
5cd24f17 846
4b556e6c 847 /* call exit list functions */
3280af22 848 while (PL_exitlistlen-- > 0)
acfe0abc 849 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 850
3280af22 851 Safefree(PL_exitlist);
4b556e6c 852
1c4916e5
CB
853 PL_exitlist = NULL;
854 PL_exitlistlen = 0;
855
a3e6e81e
NC
856 SvREFCNT_dec(PL_registered_mros);
857
551a8b83 858 /* jettison our possibly duplicated environment */
4b647fb0
DM
859 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
860 * so we certainly shouldn't free it here
861 */
2f42fcb0 862#ifndef PERL_MICRO
4b647fb0 863#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 864 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
865#ifdef USE_ITHREADS
866 /* only main thread can free environ[0] contents */
867 && PL_curinterp == aTHX
868#endif
869 )
870 {
551a8b83
JH
871 I32 i;
872
873 for (i = 0; environ[i]; i++)
4b420006 874 safesysfree(environ[i]);
0631ea03 875
4b420006
JH
876 /* Must use safesysfree() when working with environ. */
877 safesysfree(environ);
551a8b83
JH
878
879 environ = PL_origenviron;
880 }
881#endif
2f42fcb0 882#endif /* !PERL_MICRO */
551a8b83 883
30985c42
JH
884 if (destruct_level == 0) {
885
886 DEBUG_P(debprofdump());
887
888#if defined(PERLIO_LAYERS)
889 /* No more IO - including error messages ! */
890 PerlIO_cleanup(aTHX);
891#endif
892
893 CopFILE_free(&PL_compiling);
894 CopSTASH_free(&PL_compiling);
895
896 /* The exit() function will do everything that needs doing. */
897 return STATUS_EXIT;
898 }
899
804ffa60 900 /* reset so print() ends up where we expect */
a0714e2c 901 setdefout(NULL);
804ffa60 902
5f8cb046
DM
903#ifdef USE_ITHREADS
904 /* the syntax tree is shared between clones
905 * so op_free(PL_main_root) only ReREFCNT_dec's
906 * REGEXPs in the parent interpreter
907 * we need to manually ReREFCNT_dec for the clones
908 */
5f8cb046 909 SvREFCNT_dec(PL_regex_padav);
7d49f689 910 PL_regex_padav = NULL;
5f8cb046
DM
911 PL_regex_pad = NULL;
912#endif
913
ad64d0ec 914 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
915 PL_stashcache = NULL;
916
5f05dabc
PP
917 /* loosen bonds of global variables */
918
2f9285f8
DM
919 /* XXX can PL_parser still be non-null here? */
920 if(PL_parser && PL_parser->rsfp) {
921 (void)PerlIO_close(PL_parser->rsfp);
922 PL_parser->rsfp = NULL;
8ebc5c01
PP
923 }
924
84386e14
RGS
925 if (PL_minus_F) {
926 Safefree(PL_splitstr);
927 PL_splitstr = NULL;
928 }
929
8ebc5c01 930 /* switches */
3280af22
NIS
931 PL_minus_n = FALSE;
932 PL_minus_p = FALSE;
933 PL_minus_l = FALSE;
934 PL_minus_a = FALSE;
935 PL_minus_F = FALSE;
936 PL_doswitches = FALSE;
599cee73 937 PL_dowarn = G_WARN_OFF;
3280af22
NIS
938 PL_doextract = FALSE;
939 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
940 PL_unsafe = FALSE;
941
942 Safefree(PL_inplace);
bd61b366 943 PL_inplace = NULL;
a7cb1f99 944 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
945
946 if (PL_e_script) {
947 SvREFCNT_dec(PL_e_script);
a0714e2c 948 PL_e_script = NULL;
8ebc5c01
PP
949 }
950
bf9cdc68
RG
951 PL_perldb = 0;
952
8ebc5c01
PP
953 /* magical thingies */
954
e23d9e2f
CS
955 SvREFCNT_dec(PL_ofsgv); /* *, */
956 PL_ofsgv = NULL;
5f05dabc 957
7889fe52 958 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 959 PL_ors_sv = NULL;
8ebc5c01 960
3280af22 961 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 962 PL_rs = NULL;
dc92893f 963
d33b2eba 964 Safefree(PL_osname); /* $^O */
bd61b366 965 PL_osname = NULL;
5f05dabc 966
3280af22 967 SvREFCNT_dec(PL_statname);
a0714e2c
SS
968 PL_statname = NULL;
969 PL_statgv = NULL;
5f05dabc 970
8ebc5c01
PP
971 /* defgv, aka *_ should be taken care of elsewhere */
972
8ebc5c01 973 /* clean up after study() */
3280af22 974 SvREFCNT_dec(PL_lastscream);
a0714e2c 975 PL_lastscream = NULL;
3280af22
NIS
976 Safefree(PL_screamfirst);
977 PL_screamfirst = 0;
978 Safefree(PL_screamnext);
979 PL_screamnext = 0;
8ebc5c01 980
7d5ea4e7
GS
981 /* float buffer */
982 Safefree(PL_efloatbuf);
bd61b366 983 PL_efloatbuf = NULL;
7d5ea4e7
GS
984 PL_efloatsize = 0;
985
8ebc5c01 986 /* startup and shutdown function lists */
3280af22 987 SvREFCNT_dec(PL_beginav);
5a837c8f 988 SvREFCNT_dec(PL_beginav_save);
3280af22 989 SvREFCNT_dec(PL_endav);
7d30b5c4 990 SvREFCNT_dec(PL_checkav);
ece599bd 991 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
992 SvREFCNT_dec(PL_unitcheckav);
993 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 994 SvREFCNT_dec(PL_initav);
7d49f689
NC
995 PL_beginav = NULL;
996 PL_beginav_save = NULL;
997 PL_endav = NULL;
998 PL_checkav = NULL;
999 PL_checkav_save = NULL;
3c10abe3
AG
1000 PL_unitcheckav = NULL;
1001 PL_unitcheckav_save = NULL;
7d49f689 1002 PL_initav = NULL;
5618dfe8 1003
8ebc5c01 1004 /* shortcuts just get cleared */
a0714e2c
SS
1005 PL_envgv = NULL;
1006 PL_incgv = NULL;
1007 PL_hintgv = NULL;
1008 PL_errgv = NULL;
1009 PL_argvgv = NULL;
1010 PL_argvoutgv = NULL;
1011 PL_stdingv = NULL;
1012 PL_stderrgv = NULL;
1013 PL_last_in_gv = NULL;
1014 PL_replgv = NULL;
1015 PL_DBgv = NULL;
1016 PL_DBline = NULL;
1017 PL_DBsub = NULL;
1018 PL_DBsingle = NULL;
1019 PL_DBtrace = NULL;
1020 PL_DBsignal = NULL;
601f1833 1021 PL_DBcv = NULL;
7d49f689 1022 PL_dbargs = NULL;
5c284bb0 1023 PL_debstash = NULL;
8ebc5c01 1024
7a1c5554 1025 SvREFCNT_dec(PL_argvout_stack);
7d49f689 1026 PL_argvout_stack = NULL;
8ebc5c01 1027
5c831c24 1028 SvREFCNT_dec(PL_modglobal);
5c284bb0 1029 PL_modglobal = NULL;
5c831c24 1030 SvREFCNT_dec(PL_preambleav);
7d49f689 1031 PL_preambleav = NULL;
5c831c24 1032 SvREFCNT_dec(PL_subname);
a0714e2c 1033 PL_subname = NULL;
ca0c25f6 1034#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1035 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1036 PL_pidstatus = NULL;
ca0c25f6 1037#endif
5c831c24 1038 SvREFCNT_dec(PL_toptarget);
a0714e2c 1039 PL_toptarget = NULL;
5c831c24 1040 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1041 PL_bodytarget = NULL;
1042 PL_formtarget = NULL;
5c831c24 1043
d33b2eba 1044 /* free locale stuff */
b9582b6a 1045#ifdef USE_LOCALE_COLLATE
d33b2eba 1046 Safefree(PL_collation_name);
bd61b366 1047 PL_collation_name = NULL;
b9582b6a 1048#endif
d33b2eba 1049
b9582b6a 1050#ifdef USE_LOCALE_NUMERIC
d33b2eba 1051 Safefree(PL_numeric_name);
bd61b366 1052 PL_numeric_name = NULL;
a453c169 1053 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1054 PL_numeric_radix_sv = NULL;
b9582b6a 1055#endif
d33b2eba 1056
5c831c24
GS
1057 /* clear utf8 character classes */
1058 SvREFCNT_dec(PL_utf8_alnum);
1059 SvREFCNT_dec(PL_utf8_alnumc);
1060 SvREFCNT_dec(PL_utf8_ascii);
1061 SvREFCNT_dec(PL_utf8_alpha);
1062 SvREFCNT_dec(PL_utf8_space);
1063 SvREFCNT_dec(PL_utf8_cntrl);
1064 SvREFCNT_dec(PL_utf8_graph);
1065 SvREFCNT_dec(PL_utf8_digit);
1066 SvREFCNT_dec(PL_utf8_upper);
1067 SvREFCNT_dec(PL_utf8_lower);
1068 SvREFCNT_dec(PL_utf8_print);
1069 SvREFCNT_dec(PL_utf8_punct);
1070 SvREFCNT_dec(PL_utf8_xdigit);
1071 SvREFCNT_dec(PL_utf8_mark);
1072 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1073 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1074 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1075 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1076 SvREFCNT_dec(PL_utf8_idstart);
1077 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1078 PL_utf8_alnum = NULL;
1079 PL_utf8_alnumc = NULL;
1080 PL_utf8_ascii = NULL;
1081 PL_utf8_alpha = NULL;
1082 PL_utf8_space = NULL;
1083 PL_utf8_cntrl = NULL;
1084 PL_utf8_graph = NULL;
1085 PL_utf8_digit = NULL;
1086 PL_utf8_upper = NULL;
1087 PL_utf8_lower = NULL;
1088 PL_utf8_print = NULL;
1089 PL_utf8_punct = NULL;
1090 PL_utf8_xdigit = NULL;
1091 PL_utf8_mark = NULL;
1092 PL_utf8_toupper = NULL;
1093 PL_utf8_totitle = NULL;
1094 PL_utf8_tolower = NULL;
1095 PL_utf8_tofold = NULL;
1096 PL_utf8_idstart = NULL;
1097 PL_utf8_idcont = NULL;
5c831c24 1098
971a9dd3 1099 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1100 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1101 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1102 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1103 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1104 CopFILE_free(&PL_compiling);
1105 CopSTASH_free(&PL_compiling);
5c831c24 1106
a0d0e21e 1107 /* Prepare to destruct main symbol table. */
5f05dabc 1108
3280af22
NIS
1109 hv = PL_defstash;
1110 PL_defstash = 0;
a0d0e21e 1111 SvREFCNT_dec(hv);
5c831c24 1112 SvREFCNT_dec(PL_curstname);
a0714e2c 1113 PL_curstname = NULL;
a0d0e21e 1114
5a844595
GS
1115 /* clear queued errors */
1116 SvREFCNT_dec(PL_errors);
a0714e2c 1117 PL_errors = NULL;
5a844595 1118
dd69841b
BB
1119 SvREFCNT_dec(PL_isarev);
1120
a0d0e21e 1121 FREETMPS;
0453d815 1122 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1123 if (PL_scopestack_ix != 0)
9014280d 1124 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1125 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1126 (long)PL_scopestack_ix);
1127 if (PL_savestack_ix != 0)
9014280d 1128 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1129 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1130 (long)PL_savestack_ix);
1131 if (PL_tmps_floor != -1)
9014280d 1132 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1133 (long)PL_tmps_floor + 1);
a0d0e21e 1134 if (cxstack_ix != -1)
9014280d 1135 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1136 (long)cxstack_ix + 1);
a0d0e21e 1137 }
8990e307
LW
1138
1139 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1140
1141 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1142 while (sv_clean_all() > 2)
5226ed68
JH
1143 ;
1144
d4777f27
GS
1145 AvREAL_off(PL_fdpid); /* no surviving entries */
1146 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1147 PL_fdpid = NULL;
d33b2eba 1148
6c644e78
GS
1149#ifdef HAVE_INTERP_INTERN
1150 sys_intern_clear();
1151#endif
1152
6e72f9df
PP
1153 /* Destruct the global string table. */
1154 {
1155 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1156 * so that sv_free() won't fail on them.
80459961
NC
1157 * Now that the global string table is using a single hunk of memory
1158 * for both HE and HEK, we either need to explicitly unshare it the
1159 * correct way, or actually free things here.
6e72f9df 1160 */
80459961
NC
1161 I32 riter = 0;
1162 const I32 max = HvMAX(PL_strtab);
c4420975 1163 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1164 HE *hent = array[0];
1165
6e72f9df 1166 for (;;) {
0453d815 1167 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1168 HE * const next = HeNEXT(hent);
9014280d 1169 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1170 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1171 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1172 Safefree(hent);
1173 hent = next;
6e72f9df
PP
1174 }
1175 if (!hent) {
1176 if (++riter > max)
1177 break;
1178 hent = array[riter];
1179 }
1180 }
80459961
NC
1181
1182 Safefree(array);
1183 HvARRAY(PL_strtab) = 0;
1184 HvTOTALKEYS(PL_strtab) = 0;
1185 HvFILL(PL_strtab) = 0;
6e72f9df 1186 }
3280af22 1187 SvREFCNT_dec(PL_strtab);
6e72f9df 1188
e652bb2f 1189#ifdef USE_ITHREADS
c21d1a0f 1190 /* free the pointer tables used for cloning */
a0739874 1191 ptr_table_free(PL_ptr_table);
bf9cdc68 1192 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1193#endif
a0739874 1194
d33b2eba
GS
1195 /* free special SVs */
1196
1197 SvREFCNT(&PL_sv_yes) = 0;
1198 sv_clear(&PL_sv_yes);
1199 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1200 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1201
1202 SvREFCNT(&PL_sv_no) = 0;
1203 sv_clear(&PL_sv_no);
1204 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1205 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1206
9f375a43
DM
1207 {
1208 int i;
1209 for (i=0; i<=2; i++) {
1210 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1211 sv_clear(PERL_DEBUG_PAD(i));
1212 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1213 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1214 }
1215 }
1216
0453d815 1217 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1218 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1219
eba0f806
DM
1220#ifdef DEBUG_LEAKING_SCALARS
1221 if (PL_sv_count != 0) {
1222 SV* sva;
1223 SV* sv;
1224 register SV* svend;
1225
ad64d0ec 1226 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1227 svend = &sva[SvREFCNT(sva)];
1228 for (sv = sva + 1; sv < svend; ++sv) {
1229 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1230 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1231 " flags=0x%"UVxf
fd0854ff
DM
1232 " refcnt=%"UVuf pTHX__FORMAT "\n"
1233 "\tallocated at %s:%d %s %s%s\n",
574b8821
NC
1234 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1235 pTHX__VALUE,
fd0854ff
DM
1236 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1237 sv->sv_debug_line,
1238 sv->sv_debug_inpad ? "for" : "by",
1239 sv->sv_debug_optype ?
1240 PL_op_name[sv->sv_debug_optype]: "(none)",
1241 sv->sv_debug_cloned ? " (cloned)" : ""
1242 );
2aa47728 1243#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1244 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1245#endif
eba0f806
DM
1246 }
1247 }
1248 }
1249 }
2aa47728
NC
1250#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1251 {
1252 int status;
1253 fd_set rset;
1254 /* Wait for up to 4 seconds for child to terminate.
1255 This seems to be the least effort way of timing out on reaping
1256 its exit status. */
1257 struct timeval waitfor = {4, 0};
41e4abd8 1258 int sock = PL_dumper_fd;
2aa47728
NC
1259
1260 shutdown(sock, 1);
1261 FD_ZERO(&rset);
1262 FD_SET(sock, &rset);
1263 select(sock + 1, &rset, NULL, NULL, &waitfor);
1264 waitpid(child, &status, WNOHANG);
1265 close(sock);
1266 }
1267#endif
eba0f806 1268#endif
77abb4c6
NC
1269#ifdef DEBUG_LEAKING_SCALARS_ABORT
1270 if (PL_sv_count)
1271 abort();
1272#endif
bf9cdc68 1273 PL_sv_count = 0;
eba0f806 1274
f1fac472
NC
1275#ifdef PERL_DEBUG_READONLY_OPS
1276 free(PL_slabs);
1277 PL_slabs = NULL;
1278 PL_slab_count = 0;
1279#endif
eba0f806 1280
56a2bab7 1281#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1282 /* No more IO - including error messages ! */
1283 PerlIO_cleanup(aTHX);
1284#endif
1285
9f4bd222 1286 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1287 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1288 for no arg - and will try and SvREFCNT_dec it.
1289 */
1290 SvREFCNT(&PL_sv_undef) = 0;
1291 SvREADONLY_off(&PL_sv_undef);
1292
3280af22 1293 Safefree(PL_origfilename);
bd61b366 1294 PL_origfilename = NULL;
3280af22 1295 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1296 PL_reg_start_tmp = (char**)NULL;
1297 PL_reg_start_tmpl = 0;
43c5f42d 1298 Safefree(PL_reg_curpm);
82ba1be6 1299 Safefree(PL_reg_poscache);
dd28f7bb 1300 free_tied_hv_pool();
3280af22 1301 Safefree(PL_op_mask);
cf36064f 1302 Safefree(PL_psig_ptr);
bf9cdc68 1303 PL_psig_ptr = (SV**)NULL;
cf36064f 1304 Safefree(PL_psig_name);
bf9cdc68 1305 PL_psig_name = (SV**)NULL;
2c2666fc 1306 Safefree(PL_bitcount);
bd61b366 1307 PL_bitcount = NULL;
ce08f86c 1308 Safefree(PL_psig_pend);
bf9cdc68 1309 PL_psig_pend = (int*)NULL;
a0714e2c 1310 PL_formfeed = NULL;
6e72f9df 1311 nuke_stacks();
bf9cdc68
RG
1312 PL_tainting = FALSE;
1313 PL_taint_warn = FALSE;
3280af22 1314 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1315 PL_debug = 0;
ac27b0f5 1316
a0d0e21e 1317 DEBUG_P(debprofdump());
d33b2eba 1318
e5dd39fc 1319#ifdef USE_REENTRANT_API
10bc17b6 1320 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1321#endif
1322
612f20c3
GS
1323 sv_free_arenas();
1324
5d9a96ca
DM
1325 while (PL_regmatch_slab) {
1326 regmatch_slab *s = PL_regmatch_slab;
1327 PL_regmatch_slab = PL_regmatch_slab->next;
1328 Safefree(s);
1329 }
1330
fc36a67e
PP
1331 /* As the absolutely last thing, free the non-arena SV for mess() */
1332
3280af22 1333 if (PL_mess_sv) {
f350b448
NC
1334 /* we know that type == SVt_PVMG */
1335
9c63abab 1336 /* it could have accumulated taint magic */
f350b448
NC
1337 MAGIC* mg;
1338 MAGIC* moremagic;
1339 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1340 moremagic = mg->mg_moremagic;
1341 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1342 && mg->mg_len >= 0)
1343 Safefree(mg->mg_ptr);
1344 Safefree(mg);
9c63abab 1345 }
f350b448 1346
fc36a67e 1347 /* we know that type >= SVt_PV */
8bd4d4c5 1348 SvPV_free(PL_mess_sv);
3280af22
NIS
1349 Safefree(SvANY(PL_mess_sv));
1350 Safefree(PL_mess_sv);
a0714e2c 1351 PL_mess_sv = NULL;
fc36a67e 1352 }
37038d91 1353 return STATUS_EXIT;
79072805
LW
1354}
1355
954c1994
GS
1356/*
1357=for apidoc perl_free
1358
1359Releases a Perl interpreter. See L<perlembed>.
1360
1361=cut
1362*/
1363
79072805 1364void
0cb96387 1365perl_free(pTHXx)
79072805 1366{
5174512c
NC
1367 dVAR;
1368
7918f24d
NC
1369 PERL_ARGS_ASSERT_PERL_FREE;
1370
c301d606
DM
1371 if (PL_veto_cleanup)
1372 return;
1373
7cb608b5 1374#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1375 {
1376 /*
1377 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1378 * value as we're probably hunting memory leaks then
1379 */
1380 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1381 if (!s || atoi(s) == 0) {
4fd0a9b8 1382 const U32 old_debug = PL_debug;
55ef9aae
MHM
1383 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1384 thread at thread exit. */
4fd0a9b8
NC
1385 if (DEBUG_m_TEST) {
1386 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1387 "free this thread's memory\n");
1388 PL_debug &= ~ DEBUG_m_FLAG;
1389 }
55ef9aae
MHM
1390 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1391 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1392 PL_debug = old_debug;
55ef9aae
MHM
1393 }
1394 }
7cb608b5
NC
1395#endif
1396
acfe0abc 1397#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1398# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1399 {
acfe0abc 1400# ifdef NETWARE
7af12a34 1401 void *host = nw_internal_host;
acfe0abc 1402# else
7af12a34 1403 void *host = w32_internal_host;
acfe0abc 1404# endif
7af12a34 1405 PerlMem_free(aTHXx);
acfe0abc 1406# ifdef NETWARE
7af12a34 1407 nw_delete_internal_host(host);
acfe0abc 1408# else
7af12a34 1409 win32_delete_internal_host(host);
acfe0abc 1410# endif
7af12a34 1411 }
1c0ca838
GS
1412# else
1413 PerlMem_free(aTHXx);
1414# endif
acfe0abc
GS
1415#else
1416 PerlMem_free(aTHXx);
76e3520e 1417#endif
79072805
LW
1418}
1419
b7f7fff6 1420#if defined(USE_ITHREADS)
aebd1ac7
GA
1421/* provide destructors to clean up the thread key when libperl is unloaded */
1422#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1423
826955bd 1424#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1425#pragma fini "perl_fini"
666ad1ec
GA
1426#elif defined(__sun) && !defined(__GNUC__)
1427#pragma fini (perl_fini)
aebd1ac7
GA
1428#endif
1429
0dbb1585
AL
1430static void
1431#if defined(__GNUC__)
1432__attribute__((destructor))
aebd1ac7 1433#endif
de009b76 1434perl_fini(void)
aebd1ac7 1435{
27da23d5 1436 dVAR;
c301d606 1437 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1438 FREE_THREAD_KEY;
1439}
1440
1441#endif /* WIN32 */
1442#endif /* THREADS */
1443
4b556e6c 1444void
864dbfa3 1445Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1446{
97aff369 1447 dVAR;
3280af22
NIS
1448 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1449 PL_exitlist[PL_exitlistlen].fn = fn;
1450 PL_exitlist[PL_exitlistlen].ptr = ptr;
1451 ++PL_exitlistlen;
4b556e6c
JD
1452}
1453
56cf6df8
RGS
1454#ifdef HAS_PROCSELFEXE
1455/* This is a function so that we don't hold on to MAXPATHLEN
1456 bytes of stack longer than necessary
1457 */
1458STATIC void
e1ec3a88 1459S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1460{
1461 char buf[MAXPATHLEN];
1462 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1463
1464 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1465 includes a spurious NUL which will cause $^X to fail in system
1466 or backticks (this will prevent extensions from being built and
1467 many tests from working). readlink is not meant to add a NUL.
1468 Normal readlink works fine.
1469 */
1470 if (len > 0 && buf[len-1] == '\0') {
1471 len--;
1472 }
1473
1474 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1475 returning the text "unknown" from the readlink rather than the path
1476 to the executable (or returning an error from the readlink). Any valid
1477 path has a '/' in it somewhere, so use that to validate the result.
1478 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1479 */
1480 if (len > 0 && memchr(buf, '/', len)) {
1481 sv_setpvn(sv,buf,len);
1482 }
1483 else {
1484 sv_setpv(sv,arg0);
1485 }
1486}
1487#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1488
1489STATIC void
1490S_set_caret_X(pTHX) {
97aff369 1491 dVAR;
fafc274c 1492 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1493 if (tmpgv) {
1494#ifdef HAS_PROCSELFEXE
1495 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1496#else
1497#ifdef OS2
c69033f2 1498 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1499#else
c69033f2 1500 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1501#endif
1502#endif
1503 }
1504}
1505
954c1994
GS
1506/*
1507=for apidoc perl_parse
1508
1509Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1510
1511=cut
1512*/
1513
79072805 1514int
0cb96387 1515perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1516{
27da23d5 1517 dVAR;
6224f72b 1518 I32 oldscope;
6224f72b 1519 int ret;
db36c5a1 1520 dJMPENV;
8d063cd8 1521
7918f24d
NC
1522 PERL_ARGS_ASSERT_PERL_PARSE;
1523#ifndef MULTIPLICITY
ed6c66dd 1524 PERL_UNUSED_ARG(my_perl);
7918f24d 1525#endif
9d4ba2ae 1526
ec2019ad
NC
1527#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW_AND_IAMSUID
1528 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now "
1529 "execute\nsetuid perl scripts securely.\n");
a687059c
LW
1530#endif
1531
b0891165
JH
1532#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1533 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1534 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1535 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1536 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1537 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1538 if (!PL_rehash_seed_set)
1539 PL_rehash_seed = get_hash_seed();
b0891165 1540 {
9d4ba2ae 1541 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1542
1b6737cc
AL
1543 if (s && (atoi(s) == 1))
1544 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1545 }
1546#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1547
3280af22 1548 PL_origargc = argc;
e2975953 1549 PL_origargv = argv;
a0d0e21e 1550
a2722ac9
GA
1551 if (PL_origalen != 0) {
1552 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1553 }
1554 else {
3cb9023d
JH
1555 /* Set PL_origalen be the sum of the contiguous argv[]
1556 * elements plus the size of the env in case that it is
e9137a8e 1557 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1558 * as the maximum modifiable length of $0. In the worst case
1559 * the area we are able to modify is limited to the size of
43c32782 1560 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1561 * --jhi */
e1ec3a88 1562 const char *s = NULL;
54bfe034 1563 int i;
1b6737cc 1564 const UV mask =
7d8e7db3 1565 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1566 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1567 const UV aligned =
43c32782
JH
1568 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1569
1570 /* See if all the arguments are contiguous in memory. Note
1571 * that 'contiguous' is a loose term because some platforms
1572 * align the argv[] and the envp[]. If the arguments look
1573 * like non-aligned, assume that they are 'strictly' or
1574 * 'traditionally' contiguous. If the arguments look like
1575 * aligned, we just check that they are within aligned
1576 * PTRSIZE bytes. As long as no system has something bizarre
1577 * like the argv[] interleaved with some other data, we are
1578 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1579 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1580 while (*s) s++;
1581 for (i = 1; i < PL_origargc; i++) {
1582 if ((PL_origargv[i] == s + 1
43c32782 1583#ifdef OS2
c8941eeb 1584 || PL_origargv[i] == s + 2
43c32782 1585#endif
c8941eeb
JH
1586 )
1587 ||
1588 (aligned &&
1589 (PL_origargv[i] > s &&
1590 PL_origargv[i] <=
1591 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1592 )
1593 {
1594 s = PL_origargv[i];
1595 while (*s) s++;
1596 }
1597 else
1598 break;
54bfe034 1599 }
54bfe034 1600 }
a4a109c2
JD
1601
1602#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1603 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1604 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1605 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1606 ||
1607 (aligned &&
1608 (PL_origenviron[0] > s &&
1609 PL_origenviron[0] <=
1610 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1611 )
1612 {
9d419b5f 1613#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1614 s = PL_origenviron[0];
1615 while (*s) s++;
1616#endif
bd61b366 1617 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1618 /* Force copy of environment. */
1619 for (i = 1; PL_origenviron[i]; i++) {
1620 if (PL_origenviron[i] == s + 1
1621 ||
1622 (aligned &&
1623 (PL_origenviron[i] > s &&
1624 PL_origenviron[i] <=
1625 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1626 )
1627 {
1628 s = PL_origenviron[i];
1629 while (*s) s++;
1630 }
1631 else
1632 break;
54bfe034 1633 }
43c32782 1634 }
54bfe034 1635 }
a4a109c2
JD
1636#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1637
2d2af554 1638 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1639 }
1640
3280af22 1641 if (PL_do_undump) {
a0d0e21e
LW
1642
1643 /* Come here if running an undumped a.out. */
1644
3280af22
NIS
1645 PL_origfilename = savepv(argv[0]);
1646 PL_do_undump = FALSE;
a0d0e21e 1647 cxstack_ix = -1; /* start label stack again */
748a9306 1648 init_ids();
b7975bdd
NC
1649 assert (!PL_tainted);
1650 TAINT;
1651 S_set_caret_X(aTHX);
1652 TAINT_NOT;
a0d0e21e
LW
1653 init_postdump_symbols(argc,argv,env);
1654 return 0;
1655 }
1656
3280af22 1657 if (PL_main_root) {
3280af22 1658 op_free(PL_main_root);
5f66b61c 1659 PL_main_root = NULL;
ff0cee69 1660 }
5f66b61c 1661 PL_main_start = NULL;
3280af22 1662 SvREFCNT_dec(PL_main_cv);
601f1833 1663 PL_main_cv = NULL;
79072805 1664
3280af22
NIS
1665 time(&PL_basetime);
1666 oldscope = PL_scopestack_ix;
599cee73 1667 PL_dowarn = G_WARN_OFF;
f86702cc 1668
14dd3ad8 1669 JMPENV_PUSH(ret);
6224f72b 1670 switch (ret) {
312caa8e 1671 case 0:
14dd3ad8 1672 parse_body(env,xsinit);
3c10abe3
AG
1673 if (PL_unitcheckav)
1674 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1675 if (PL_checkav)
1676 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1677 ret = 0;
1678 break;
6224f72b
GS
1679 case 1:
1680 STATUS_ALL_FAILURE;
1681 /* FALL THROUGH */
1682 case 2:
1683 /* my_exit() was called */
3280af22 1684 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1685 LEAVE;
1686 FREETMPS;
3280af22 1687 PL_curstash = PL_defstash;
3c10abe3
AG
1688 if (PL_unitcheckav)
1689 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1690 if (PL_checkav)
1691 call_list(oldscope, PL_checkav);
37038d91 1692 ret = STATUS_EXIT;
14dd3ad8 1693 break;
6224f72b 1694 case 3:
bf49b057 1695 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1696 ret = 1;
1697 break;
6224f72b 1698 }
14dd3ad8
GS
1699 JMPENV_POP;
1700 return ret;
1701}
1702
312caa8e 1703STATIC void *
14dd3ad8 1704S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1705{
27da23d5 1706 dVAR;
2f9285f8 1707 PerlIO *rsfp;
312caa8e 1708 int argc = PL_origargc;
8f42b153 1709 char **argv = PL_origargv;
e1ec3a88 1710 const char *scriptname = NULL;
312caa8e 1711 VOL bool dosearch = FALSE;
829372d3 1712#ifdef DOSUID
e1ec3a88 1713 const char *validarg = "";
829372d3 1714#endif
312caa8e 1715 register SV *sv;
c7030b81 1716 register char c;
bd61b366 1717 const char *cddir = NULL;
ab019eaa 1718#ifdef USE_SITECUSTOMIZE
20ef40cf 1719 bool minus_f = FALSE;
ab019eaa 1720#endif
009d90df 1721 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1722 bool add_read_e_script = FALSE;
009d90df
DM
1723
1724 SvGROW(linestr_sv, 80);
76f68e9b 1725 sv_setpvs(linestr_sv,"");
312caa8e 1726
396482e1 1727 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1728 SAVEFREESV(sv);
1729 init_main_stash();
54310121 1730
c7030b81
NC
1731 {
1732 const char *s;
6224f72b
GS
1733 for (argc--,argv++; argc > 0; argc--,argv++) {
1734 if (argv[0][0] != '-' || !argv[0][1])
1735 break;
1736#ifdef DOSUID
1737 if (*validarg)
1738 validarg = " PHOOEY ";
1739 else
1740 validarg = argv[0];
ae3f3efd
PS
1741 /*
1742 * Can we rely on the kernel to start scripts with argv[1] set to
1743 * contain all #! line switches (the whole line)? (argv[0] is set to
1744 * the interpreter name, argv[2] to the script name; argv[3] and
1745 * above may contain other arguments.)
1746 */
13281fa4 1747#endif
6224f72b
GS
1748 s = argv[0]+1;
1749 reswitch:
47f56822 1750 switch ((c = *s)) {
729a02f2 1751 case 'C':
1d5472a9
GS
1752#ifndef PERL_STRICT_CR
1753 case '\r':
1754#endif
6224f72b
GS
1755 case ' ':
1756 case '0':
1757 case 'F':
1758 case 'a':
1759 case 'c':
1760 case 'd':
1761 case 'D':
1762 case 'h':
1763 case 'i':
1764 case 'l':
1765 case 'M':
1766 case 'm':
1767 case 'n':
1768 case 'p':
1769 case 's':
1770 case 'u':
1771 case 'U':
1772 case 'v':
599cee73
PM
1773 case 'W':
1774 case 'X':
6224f72b 1775 case 'w':
97bd5664 1776 if ((s = moreswitches(s)))
6224f72b
GS
1777 goto reswitch;
1778 break;
33b78306 1779
1dbad523 1780 case 't':
22f7c9c9 1781 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1782 if( !PL_tainting ) {
1783 PL_taint_warn = TRUE;
1784 PL_tainting = TRUE;
1785 }
1786 s++;
1787 goto reswitch;
6224f72b 1788 case 'T':
22f7c9c9 1789 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1790 PL_tainting = TRUE;
317ea90d 1791 PL_taint_warn = FALSE;
6224f72b
GS
1792 s++;
1793 goto reswitch;
f86702cc 1794
bc9b29db
RH
1795 case 'E':
1796 PL_minus_E = TRUE;
1797 /* FALL THROUGH */
6224f72b 1798 case 'e':
bf4acbe4
GS
1799#ifdef MACOS_TRADITIONAL
1800 /* ignore -e for Dev:Pseudo argument */
1801 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1802 break;
bf4acbe4 1803#endif
f20b2998 1804 forbid_setid('e', FALSE);
3280af22 1805 if (!PL_e_script) {
396482e1 1806 PL_e_script = newSVpvs("");
5486870f 1807 add_read_e_script = TRUE;
6224f72b
GS
1808 }
1809 if (*++s)
3280af22 1810 sv_catpv(PL_e_script, s);
6224f72b 1811 else if (argv[1]) {
3280af22 1812 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1813 argc--,argv++;
1814 }
1815 else
47f56822 1816 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1817 sv_catpvs(PL_e_script, "\n");
6224f72b 1818 break;
afe37c7d 1819
20ef40cf 1820 case 'f':
f5542d3a 1821#ifdef USE_SITECUSTOMIZE
20ef40cf 1822 minus_f = TRUE;
f5542d3a 1823#endif
20ef40cf
GA
1824 s++;
1825 goto reswitch;
1826
6224f72b 1827 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1828 forbid_setid('I', FALSE);
bd61b366 1829 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1830 argc--,argv++;
1831 }
6224f72b 1832 if (s && *s) {
0df16ed7 1833 STRLEN len = strlen(s);
aec46f14 1834 const char * const p = savepvn(s, len);
20189146 1835 incpush(p, TRUE, TRUE, FALSE, FALSE, FALSE);
396482e1 1836 sv_catpvs(sv, "-I");
0df16ed7 1837 sv_catpvn(sv, p, len);
396482e1 1838 sv_catpvs(sv, " ");
6224f72b 1839 Safefree(p);
0df16ed7
GS
1840 }
1841 else
a67e862a 1842 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1843 break;
6224f72b 1844 case 'S':
f20b2998 1845 forbid_setid('S', FALSE);
6224f72b
GS
1846 dosearch = TRUE;
1847 s++;
1848 goto reswitch;
1849 case 'V':
7edfd0ef
NC
1850 {
1851 SV *opts_prog;
1852
29a861e7 1853 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
7edfd0ef 1854 if (*++s != ':') {
389d73ad
NC
1855 /* Can't do newSVpvs() as that would involve pre-processor
1856 condititionals inside a macro expansion. */
1857 opts_prog = Perl_newSVpv(aTHX_ "$_ = join ' ', sort qw("
6224f72b 1858# ifdef DEBUGGING
e2e4dbf1 1859 " DEBUGGING"
6224f72b 1860# endif
3bcf5ed8
SP
1861# ifdef NO_MATHOMS
1862 " NO_MATHOMS"
1863# endif
85e1fcb9 1864# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1865 " PERL_DONT_CREATE_GVSV"
85e1fcb9 1866# endif
85e1fcb9 1867# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1868 " PERL_MALLOC_WRAP"
85e1fcb9 1869# endif
4724db38
NC
1870# ifdef PERL_MEM_LOG
1871 " PERL_MEM_LOG"
1872# endif
1873# ifdef PERL_MEM_LOG_ENV
1874 " PERL_MEM_LOG_ENV"
1875# endif
1876# ifdef PERL_MEM_LOG_ENV_FD
1877 " PERL_MEM_LOG_ENV_FD"
1878# endif
1879# ifdef PERL_MEM_LOG_STDERR
1880 " PERL_MEM_LOG_STDERR"
1881# endif
1882# ifdef PERL_MEM_LOG_TIMESTAMP
1883 " PERL_MEM_LOG_TIMESTAMP"
1884# endif
1be1b388
MB
1885# ifdef PERL_USE_DEVEL
1886 " PERL_USE_DEVEL"
1887# endif
417cd4a8
SP
1888# ifdef PERL_USE_SAFE_PUTENV
1889 " PERL_USE_SAFE_PUTENV"
1890# endif
20ef40cf 1891# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1892 " USE_SITECUSTOMIZE"
20ef40cf 1893# endif
e187df3b
NC
1894# ifdef USE_FAST_STDIO
1895 " USE_FAST_STDIO"
1896# endif
389d73ad 1897 , 0);
efcaa95b 1898
b75885fd 1899 sv_catpv(opts_prog, PL_bincompat_options);
389d73ad
NC
1900 /* Terminate the qw(, and then wrap at 76 columns. */
1901 sv_catpvs(opts_prog, "); s/(?=.{53})(.{1,53}) /$1\\n /mg;print Config::myconfig(),");
1902#ifdef VMS
1903 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n");
1904#else
1905 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n");
1906#endif
6abfca00 1907 sv_catpvs(opts_prog," Source revision: " STRINGIFY(PERL_GIT_SHA1) "\\n");
389d73ad 1908 sv_catpvs(opts_prog," Compile-time options: $_\\n\",");
b363f7ed 1909
6224f72b 1910#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1911 if (LOCAL_PATCH_COUNT > 0) {
1912 int i;
396482e1 1913 sv_catpvs(opts_prog,
7edfd0ef
NC
1914 "\" Locally applied patches:\\n\",");
1915 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1916 if (PL_localpatches[i])
6abfca00 1917#ifdef X_PERL_PATCHNUM
6f6ff242
YO
1918/* this is ifdef'ed out, we would enable this if we want to transform
1919 "DEVEL" registered patches into the git name */
6abfca00
YO
1920 if (strEQ(PL_localpatches[i],"DEVEL"))
1921 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1922 0, STRINGIFY(PERL_PATCHNUM), 0);
1923 else
1924#endif
1925 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
7edfd0ef
NC
1926 0, PL_localpatches[i], 0);
1927 }
6224f72b 1928 }
6224f72b 1929#endif
7edfd0ef 1930 Perl_sv_catpvf(aTHX_ opts_prog,
758ce194 1931 "\" Built under %s\\n",OSNAME);
6224f72b
GS
1932#ifdef __DATE__
1933# ifdef __TIME__
895aa832
NC
1934 sv_catpvs(opts_prog,
1935 " Compiled at " __DATE__ " " __TIME__ "\\n\"");
6224f72b 1936# else
895aa832 1937 sv_catpvs(opts_prog, " Compiled on " __DATE__ "\\n\"");
6224f72b
GS
1938# endif
1939#endif
396482e1 1940 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1941 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1942 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1943#ifdef __CYGWIN__
396482e1 1944 sv_catpvs(opts_prog,
7edfd0ef 1945 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1946#endif
396482e1 1947 sv_catpvs(opts_prog,
7edfd0ef
NC
1948 "print \" \\%ENV:\\n @env\\n\" if @env;"
1949 "print \" \\@INC:\\n @INC\\n\";");
1950 }
1951 else {
1952 ++s;
1953 opts_prog = Perl_newSVpvf(aTHX_
1954 "Config::config_vars(qw%c%s%c)",
1955 0, s, 0);
1956 s += strlen(s);
1957 }
1958 av_push(PL_preambleav, opts_prog);
1959 /* don't look for script or read stdin */
1960 scriptname = BIT_BUCKET;
1961 goto reswitch;
6224f72b 1962 }
6224f72b 1963 case 'x':
3280af22 1964 PL_doextract = TRUE;
6224f72b 1965 s++;
304334da 1966 if (*s)
f4c556ac 1967 cddir = s;
6224f72b
GS
1968 break;
1969 case 0:
1970 break;
1971 case '-':
1972 if (!*++s || isSPACE(*s)) {
1973 argc--,argv++;
1974 goto switch_end;
1975 }
1976 /* catch use of gnu style long options */
1977 if (strEQ(s, "version")) {
dd374669 1978 s = (char *)"v";
6224f72b
GS
1979 goto reswitch;
1980 }
1981 if (strEQ(s, "help")) {
dd374669 1982 s = (char *)"h";
6224f72b
GS
1983 goto reswitch;
1984 }
1985 s--;
1986 /* FALL THROUGH */
1987 default:
cea2e8a9 1988 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1989 }
1990 }
c7030b81
NC
1991 }
1992
6224f72b 1993 switch_end:
54310121 1994
c7030b81
NC
1995 {
1996 char *s;
1997
f675dbe5
CB
1998 if (
1999#ifndef SECURE_INTERNAL_GETENV
2000 !PL_tainting &&
2001#endif
cf756827 2002 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2003 {
74288ac8
GS
2004 while (isSPACE(*s))
2005 s++;
317ea90d 2006 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 2007 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 2008 PL_tainting = TRUE;
317ea90d
MS
2009 PL_taint_warn = FALSE;
2010 }
74288ac8 2011 else {
bd61b366 2012 char *popt_copy = NULL;
74288ac8 2013 while (s && *s) {
54913509 2014 const char *d;
74288ac8
GS
2015 while (isSPACE(*s))
2016 s++;
2017 if (*s == '-') {
2018 s++;
2019 if (isSPACE(*s))
2020 continue;
2021 }
4ea8f8fb 2022 d = s;
74288ac8
GS
2023 if (!*s)
2024 break;
f0d36289 2025 if (!strchr("CDIMUdmtw", *s))
cea2e8a9 2026 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2027 while (++s && *s) {
2028 if (isSPACE(*s)) {
cf756827 2029 if (!popt_copy) {
bfa6c418
NC
2030 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2031 s = popt_copy + (s - d);
2032 d = popt_copy;
cf756827 2033 }
4ea8f8fb
MS
2034 *s++ = '\0';
2035 break;
2036 }
2037 }
1c4db469 2038 if (*d == 't') {
317ea90d
MS
2039 if( !PL_tainting ) {
2040 PL_taint_warn = TRUE;
2041 PL_tainting = TRUE;
2042 }
1c4db469 2043 } else {
97bd5664 2044 moreswitches(d);
1c4db469 2045 }
6224f72b 2046 }
6224f72b
GS
2047 }
2048 }
c7030b81 2049 }
a0d0e21e 2050
20ef40cf
GA
2051#ifdef USE_SITECUSTOMIZE
2052 if (!minus_f) {
29a861e7
NC
2053 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2054 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
20ef40cf
GA
2055 }
2056#endif
2057
6224f72b
GS
2058 if (!scriptname)
2059 scriptname = argv[0];
3280af22 2060 if (PL_e_script) {
6224f72b
GS
2061 argc++,argv--;
2062 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2063 }
bd61b366 2064 else if (scriptname == NULL) {
6224f72b
GS
2065#ifdef MSDOS
2066 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2067 moreswitches("h");
6224f72b
GS
2068#endif
2069 scriptname = "-";
2070 }
2071
b7975bdd
NC
2072 /* Set $^X early so that it can be used for relocatable paths in @INC */
2073 assert (!PL_tainted);
2074 TAINT;
2075 S_set_caret_X(aTHX);
2076 TAINT_NOT;
6224f72b
GS
2077 init_perllib();
2078
a52eba0e 2079 {
f20b2998 2080 bool suidscript = FALSE;
829372d3
NC
2081
2082#ifdef DOSUID
2083 const int fdscript =
2084#endif
2085 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2086
2f9285f8
DM
2087 validate_suid(validarg, scriptname, fdscript, suidscript,
2088 linestr_sv, rsfp);
6224f72b 2089
64ca3a65 2090#ifndef PERL_MICRO
a52eba0e
NC
2091# if defined(SIGCHLD) || defined(SIGCLD)
2092 {
2093# ifndef SIGCHLD
2094# define SIGCHLD SIGCLD
2095# endif
2096 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2097 if (sigstate == (Sighandler_t) SIG_IGN) {
2098 if (ckWARN(WARN_SIGNAL))
2099 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2100 "Can't ignore signal CHLD, forcing to default");
2101 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2102 }
0b5b802d 2103 }
a52eba0e 2104# endif
64ca3a65 2105#endif
0b5b802d 2106
a52eba0e 2107 if (PL_doextract
bf4acbe4 2108#ifdef MACOS_TRADITIONAL
a52eba0e 2109 || gMacPerl_AlwaysExtract
bf4acbe4 2110#endif
a52eba0e 2111 ) {
faef540c 2112
f20b2998 2113 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2114 setuid scripts. */
2115 forbid_setid('x', suidscript);
f20b2998 2116 /* Hence you can't get here if suidscript is true */
faef540c 2117
2f9285f8 2118 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2119 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2120 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2121 }
f4c556ac 2122 }
6224f72b 2123
ea726b52 2124 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2125 CvUNIQUE_on(PL_compcv);
2126
dd2155a4 2127 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2128
dd69841b
BB
2129 PL_isarev = newHV();
2130
0c4f7ff0 2131 boot_core_PerlIO();
6224f72b 2132 boot_core_UNIVERSAL();
09bef843 2133 boot_core_xsutils();
e1a479c5 2134 boot_core_mro();
6224f72b
GS
2135
2136 if (xsinit)
acfe0abc 2137 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2138#ifndef PERL_MICRO
d0d72822 2139#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2140 init_os_extras();
6224f72b 2141#endif
64ca3a65 2142#endif
6224f72b 2143
29209bc5 2144#ifdef USE_SOCKS
1b9c9cf5
DH
2145# ifdef HAS_SOCKS5_INIT
2146 socks5_init(argv[0]);
2147# else
29209bc5 2148 SOCKSinit(argv[0]);
1b9c9cf5 2149# endif
ac27b0f5 2150#endif
29209bc5 2151
6224f72b
GS
2152 init_predump_symbols();
2153 /* init_postdump_symbols not currently designed to be called */
2154 /* more than once (ENV isn't cleared first, for example) */
2155 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2156 if (!PL_do_undump)
6224f72b
GS
2157 init_postdump_symbols(argc,argv,env);
2158
27da23d5
JH
2159 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2160 * or explicitly in some platforms.
085a54d9 2161 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2162 * look like the user wants to use UTF-8. */
a0fd4948 2163#if defined(__SYMBIAN32__)
27da23d5
JH
2164 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2165#endif
06e66572
JH
2166 if (PL_unicode) {
2167 /* Requires init_predump_symbols(). */
a05d7ebb 2168 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2169 IO* io;
2170 PerlIO* fp;
2171 SV* sv;
2172
a05d7ebb 2173 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2174 * and the default open disciplines. */
a05d7ebb
JH
2175 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2176 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2177 (fp = IoIFP(io)))
2178 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2179 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2180 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2181 (fp = IoOFP(io)))
2182 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2183 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2184 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2185 (fp = IoOFP(io)))
2186 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2187 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2188 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2189 SVt_PV)))) {
a05d7ebb
JH
2190 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2191 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2192 if (in) {
2193 if (out)
76f68e9b 2194 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2195 else
76f68e9b 2196 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2197 }
2198 else if (out)
76f68e9b 2199 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2200 SvSETMAGIC(sv);
2201 }
b310b053
JH
2202 }
2203 }
2204
c7030b81
NC
2205 {
2206 const char *s;
4ffa73a3
JH
2207 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2208 if (strEQ(s, "unsafe"))
2209 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2210 else if (strEQ(s, "safe"))
2211 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2212 else
2213 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2214 }
c7030b81 2215 }
4ffa73a3 2216
81d86705 2217#ifdef PERL_MAD
c7030b81
NC
2218 {
2219 const char *s;
81d86705
NC
2220 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2221 PL_madskills = 1;
2222 PL_minus_c = 1;
2223 if (!s || !s[0])
2224 PL_xmlfp = PerlIO_stdout();
2225 else {
2226 PL_xmlfp = PerlIO_open(s, "w");
2227 if (!PL_xmlfp)
2228 Perl_croak(aTHX_ "Can't open %s", s);
2229 }
1a9a51d4 2230 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2231 }
c7030b81
NC
2232 }
2233
2234 {
2235 const char *s;
81d86705
NC
2236 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2237 PL_madskills = atoi(s);
1a9a51d4 2238 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2239 }
c7030b81 2240 }
81d86705
NC
2241#endif
2242
5486870f 2243 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2244 PL_subname = newSVpvs("main");
6224f72b 2245
5486870f
DM
2246 if (add_read_e_script)
2247 filter_add(read_e_script, NULL);
2248
6224f72b
GS
2249 /* now parse the script */
2250
93189314 2251 SETERRNO(0,SS_NORMAL);
bf4acbe4 2252#ifdef MACOS_TRADITIONAL
13765c85 2253 if (gMacPerl_SyntaxError = (yyparse() || PL_parser->error_count)) {
bf4acbe4
GS
2254 if (PL_minus_c)
2255 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2256 else {
2257 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2258 MacPerl_MPWFileName(PL_origfilename));
2259 }
2260 }
2261#else
13765c85 2262 if (yyparse() || PL_parser->error_count) {
3280af22 2263 if (PL_minus_c)
cea2e8a9 2264 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2265 else {
cea2e8a9 2266 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2267 PL_origfilename);
6224f72b
GS
2268 }
2269 }
bf4acbe4 2270#endif
57843af0 2271 CopLINE_set(PL_curcop, 0);
3280af22 2272 PL_curstash = PL_defstash;
3280af22
NIS
2273 if (PL_e_script) {
2274 SvREFCNT_dec(PL_e_script);
a0714e2c 2275 PL_e_script = NULL;
6224f72b
GS
2276 }
2277
3280af22 2278 if (PL_do_undump)
6224f72b
GS
2279 my_unexec();
2280
57843af0
GS
2281 if (isWARN_ONCE) {
2282 SAVECOPFILE(PL_curcop);
2283 SAVECOPLINE(PL_curcop);
3280af22 2284 gv_check(PL_defstash);
57843af0 2285 }
6224f72b
GS
2286
2287 LEAVE;
2288 FREETMPS;
2289
2290#ifdef MYMALLOC
f6a607bc
RGS
2291 {
2292 const char *s;
6224f72b
GS
2293 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2294 dump_mstats("after compilation:");
f6a607bc 2295 }
6224f72b
GS
2296#endif
2297
2298 ENTER;
3280af22 2299 PL_restartop = 0;
312caa8e 2300 return NULL;
6224f72b
GS
2301}
2302
954c1994
GS
2303/*
2304=for apidoc perl_run
2305
2306Tells a Perl interpreter to run. See L<perlembed>.
2307
2308=cut
2309*/
2310
6224f72b 2311int
0cb96387 2312perl_run(pTHXx)
6224f72b 2313{
97aff369 2314 dVAR;
6224f72b 2315 I32 oldscope;
14dd3ad8 2316 int ret = 0;
db36c5a1 2317 dJMPENV;
6224f72b 2318
7918f24d
NC
2319 PERL_ARGS_ASSERT_PERL_RUN;
2320#ifndef MULTIPLICITY
ed6c66dd 2321 PERL_UNUSED_ARG(my_perl);
7918f24d 2322#endif
9d4ba2ae 2323
3280af22 2324 oldscope = PL_scopestack_ix;
96e176bf
CL
2325#ifdef VMS
2326 VMSISH_HUSHED = 0;
2327#endif
6224f72b 2328
14dd3ad8 2329 JMPENV_PUSH(ret);
6224f72b
GS
2330 switch (ret) {
2331 case 1:
2332 cxstack_ix = -1; /* start context stack again */
312caa8e 2333 goto redo_body;
14dd3ad8 2334 case 0: /* normal completion */
14dd3ad8
GS
2335 redo_body:
2336 run_body(oldscope);
14dd3ad8
GS
2337 /* FALL THROUGH */
2338 case 2: /* my_exit() */
3280af22 2339 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2340 LEAVE;
2341 FREETMPS;
3280af22 2342 PL_curstash = PL_defstash;
3a1ee7e8 2343 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2344 PL_endav && !PL_minus_c)
2345 call_list(oldscope, PL_endav);
6224f72b
GS
2346#ifdef MYMALLOC
2347 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2348 dump_mstats("after execution: ");
2349#endif
37038d91 2350 ret = STATUS_EXIT;
14dd3ad8 2351 break;
6224f72b 2352 case 3:
312caa8e
CS
2353 if (PL_restartop) {
2354 POPSTACK_TO(PL_mainstack);
2355 goto redo_body;
6224f72b 2356 }
bf49b057 2357 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2358 FREETMPS;
14dd3ad8
GS
2359 ret = 1;
2360 break;
6224f72b
GS
2361 }
2362
14dd3ad8
GS
2363 JMPENV_POP;
2364 return ret;
312caa8e
CS
2365}
2366
dd374669 2367STATIC void
14dd3ad8
GS
2368S_run_body(pTHX_ I32 oldscope)
2369{
97aff369 2370 dVAR;
6224f72b 2371 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2372 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2373
3280af22 2374 if (!PL_restartop) {
81d86705
NC
2375#ifdef PERL_MAD
2376 if (PL_xmlfp) {
2377 xmldump_all();
2378 exit(0); /* less likely to core dump than my_exit(0) */
2379 }
2380#endif
6224f72b 2381 DEBUG_x(dump_all());
cf2782cd 2382#ifdef DEBUGGING
ecae49c0
NC
2383 if (!DEBUG_q_TEST)
2384 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2385#endif
6224f72b 2386
3280af22 2387 if (PL_minus_c) {
bf4acbe4 2388#ifdef MACOS_TRADITIONAL
e69a2255
JH
2389 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2390 (gMacPerl_ErrorFormat ? "# " : ""),
2391 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2392#else
bf49b057 2393 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2394#endif
6224f72b
GS
2395 my_exit(0);
2396 }
3280af22 2397 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2398 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2399 if (PL_initav)
2400 call_list(oldscope, PL_initav);
f1fac472
NC
2401#ifdef PERL_DEBUG_READONLY_OPS
2402 Perl_pending_Slabs_to_ro(aTHX);
2403#endif
6224f72b
GS
2404 }
2405
2406 /* do it */
2407
3280af22 2408 if (PL_restartop) {
533c011a 2409 PL_op = PL_restartop;
3280af22 2410 PL_restartop = 0;
cea2e8a9 2411 CALLRUNOPS(aTHX);
6224f72b 2412 }
3280af22
NIS
2413 else if (PL_main_start) {
2414 CvDEPTH(PL_main_cv) = 1;
533c011a 2415 PL_op = PL_main_start;
cea2e8a9 2416 CALLRUNOPS(aTHX);
6224f72b 2417 }
f6b3007c
JH
2418 my_exit(0);
2419 /* NOTREACHED */
6224f72b
GS
2420}
2421
954c1994 2422/*
ccfc67b7
JH
2423=head1 SV Manipulation Functions
2424
954c1994
GS
2425=for apidoc p||get_sv
2426
2427Returns the SV of the specified Perl scalar. If C<create> is set and the
2428Perl variable does not exist then it will be created. If C<create> is not
2429set and the variable does not exist then NULL is returned.
2430
2431=cut
2432*/
2433
6224f72b 2434SV*
864dbfa3 2435Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2436{
2437 GV *gv;
7918f24d
NC
2438
2439 PERL_ARGS_ASSERT_GET_SV;
2440
6224f72b
GS
2441 gv = gv_fetchpv(name, create, SVt_PV);
2442 if (gv)
2443 return GvSV(gv);
a0714e2c 2444 return NULL;
6224f72b
GS
2445}
2446
954c1994 2447/*
ccfc67b7
JH
2448=head1 Array Manipulation Functions
2449
954c1994
GS
2450=for apidoc p||get_av
2451
2452Returns the AV of the specified Perl array. If C<create> is set and the
2453Perl variable does not exist then it will be created. If C<create> is not
2454set and the variable does not exist then NULL is returned.
2455
2456=cut
2457*/
2458
6224f72b 2459AV*
864dbfa3 2460Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2461{
c4420975 2462 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
7918f24d
NC
2463
2464 PERL_ARGS_ASSERT_GET_AV;
2465
6224f72b
GS
2466 if (create)
2467 return GvAVn(gv);
2468 if (gv)
2469 return GvAV(gv);
7d49f689 2470 return NULL;
6224f72b
GS
2471}
2472
954c1994 2473/*
ccfc67b7
JH
2474=head1 Hash Manipulation Functions
2475
954c1994
GS
2476=for apidoc p||get_hv
2477
2478Returns the HV of the specified Perl hash. If C<create> is set and the
2479Perl variable does not exist then it will be created. If C<create> is not
2480set and the variable does not exist then NULL is returned.
2481
2482=cut
2483*/
2484
6224f72b 2485HV*
864dbfa3 2486Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2487{
890ce7af 2488 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
7918f24d
NC
2489
2490 PERL_ARGS_ASSERT_GET_HV;
2491
a0d0e21e
LW
2492 if (create)
2493 return GvHVn(gv);
2494 if (gv)
2495 return GvHV(gv);
5c284bb0 2496 return NULL;
a0d0e21e
LW
2497}
2498
954c1994 2499/*
ccfc67b7
JH
2500=head1 CV Manipulation Functions
2501
780a5241
NC
2502=for apidoc p||get_cvn_flags
2503
2504Returns the CV of the specified Perl subroutine. C<flags> are passed to
2505C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2506exist then it will be declared (which has the same effect as saying
2507C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2508then NULL is returned.
2509
954c1994
GS
2510=for apidoc p||get_cv
2511
780a5241 2512Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2513
2514=cut
2515*/
2516
a0d0e21e 2517CV*
780a5241 2518Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2519{
780a5241 2520 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2521 /* XXX this is probably not what they think they're getting.
2522 * It has the same effect as "sub name;", i.e. just a forward
2523 * declaration! */
7918f24d
NC
2524
2525 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2526
780a5241 2527 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2528 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2529 return newSUB(start_subparse(FALSE, 0),
780a5241 2530 newSVOP(OP_CONST, 0, sv),
5f66b61c 2531 NULL, NULL);
780a5241 2532 }
a0d0e21e 2533 if (gv)
8ebc5c01 2534 return GvCVu(gv);
601f1833 2535 return NULL;
a0d0e21e
LW
2536}
2537
780a5241
NC
2538CV*
2539Perl_get_cv(pTHX_ const char *name, I32 flags)
2540{
7918f24d
NC
2541 PERL_ARGS_ASSERT_GET_CV;
2542
780a5241
NC
2543 return get_cvn_flags(name, strlen(name), flags);
2544}
2545
79072805
LW
2546/* Be sure to refetch the stack pointer after calling these routines. */
2547
954c1994 2548/*
ccfc67b7
JH
2549
2550=head1 Callback Functions
2551
954c1994
GS
2552=for apidoc p||call_argv
2553
2554Performs a callback to the specified Perl sub. See L<perlcall>.
2555
2556=cut
2557*/
2558
a0d0e21e 2559I32
8f42b153 2560Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2561
8ac85365
NIS
2562 /* See G_* flags in cop.h */
2563 /* null terminated arg list */
8990e307 2564{
97aff369 2565 dVAR;
a0d0e21e 2566 dSP;
8990e307 2567
7918f24d
NC
2568 PERL_ARGS_ASSERT_CALL_ARGV;
2569
924508f0 2570 PUSHMARK(SP);
a0d0e21e 2571 if (argv) {
8990e307 2572 while (*argv) {
6e449a3a 2573 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2574 argv++;
2575 }
a0d0e21e 2576 PUTBACK;
8990e307 2577 }
864dbfa3 2578 return call_pv(sub_name, flags);
8990e307
LW
2579}
2580
954c1994
GS
2581/*
2582=for apidoc p||call_pv
2583
2584Performs a callback to the specified Perl sub. See L<perlcall>.
2585
2586=cut
2587*/
2588
a0d0e21e 2589I32
864dbfa3 2590Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2591 /* name of the subroutine */
2592 /* See G_* flags in cop.h */
a0d0e21e 2593{
7918f24d
NC
2594 PERL_ARGS_ASSERT_CALL_PV;
2595
ad64d0ec 2596 return call_sv(MUTABLE_SV(get_cv(sub_name, TRUE)), flags);
a0d0e21e
LW
2597}
2598
954c1994
GS
2599/*
2600=for apidoc p||call_method
2601
2602Performs a callback to the specified Perl method. The blessed object must
2603be on the stack. See L<perlcall>.
2604
2605=cut
2606*/
2607
a0d0e21e 2608I32
864dbfa3 2609Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2610 /* name of the subroutine */
2611 /* See G_* flags in cop.h */
a0d0e21e 2612{
7918f24d
NC
2613 PERL_ARGS_ASSERT_CALL_METHOD;
2614
968b3946 2615 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2616}
2617
2618/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2619/*
2620=for apidoc p||call_sv
2621
2622Performs a callback to the Perl sub whose name is in the SV. See
2623L<perlcall>.
2624
2625=cut
2626*/
2627
a0d0e21e 2628I32
001d637e 2629Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2630 /* See G_* flags in cop.h */
a0d0e21e 2631{
27da23d5 2632 dVAR; dSP;
a0d0e21e 2633 LOGOP myop; /* fake syntax tree node */
968b3946 2634 UNOP method_op;
aa689395 2635 I32 oldmark;
8ea43dc8 2636 VOL I32 retval = 0;
a0d0e21e 2637 I32 oldscope;
54310121 2638 bool oldcatch = CATCH_GET;
6224f72b 2639 int ret;
c4420975 2640 OP* const oldop = PL_op;
db36c5a1 2641 dJMPENV;
1e422769 2642
7918f24d
NC
2643 PERL_ARGS_ASSERT_CALL_SV;
2644
a0d0e21e
LW
2645 if (flags & G_DISCARD) {
2646 ENTER;
2647 SAVETMPS;
2648 }
2f8edad0
NC
2649 if (!(flags & G_WANT)) {
2650 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2651 */
2652 flags |= G_SCALAR;
2653 }
a0d0e21e 2654
aa689395 2655 Zero(&myop, 1, LOGOP);
5f66b61c 2656 myop.op_next = NULL;
f51d4af5 2657 if (!(flags & G_NOARGS))
aa689395 2658 myop.op_flags |= OPf_STACKED;
4f911530 2659 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2660 SAVEOP();
533c011a 2661 PL_op = (OP*)&myop;
aa689395 2662
3280af22
NIS
2663 EXTEND(PL_stack_sp, 1);
2664 *++PL_stack_sp = sv;
aa689395 2665 oldmark = TOPMARK;
3280af22 2666 oldscope = PL_scopestack_ix;
a0d0e21e 2667
3280af22 2668 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2669 /* Handle first BEGIN of -d. */
3280af22 2670 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2671 /* Try harder, since this may have been a sighandler, thus
2672 * curstash may be meaningless. */
ea726b52 2673 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2674 && !(flags & G_NODEBUG))
533c011a 2675 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2676
968b3946
GS
2677 if (flags & G_METHOD) {
2678 Zero(&method_op, 1, UNOP);
2679 method_op.op_next = PL_op;
2680 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2681 method_op.op_type = OP_METHOD;
968b3946 2682 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2683 myop.op_type = OP_ENTERSUB;
f39d0b86 2684 PL_op = (OP*)&method_op;
968b3946
GS
2685 }
2686
312caa8e 2687 if (!(flags & G_EVAL)) {
0cdb2077 2688 CATCH_SET(TRUE);
d6f07c05 2689 CALL_BODY_SUB((OP*)&myop);
312caa8e 2690 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2691 CATCH_SET(oldcatch);
312caa8e
CS
2692 }
2693 else {
d78bda3d 2694 myop.op_other = (OP*)&myop;
3280af22 2695 PL_markstack_ptr--;
edb2152a 2696 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2697 PL_markstack_ptr++;
a0d0e21e 2698
14dd3ad8 2699 JMPENV_PUSH(ret);
edb2152a 2700
6224f72b
GS
2701 switch (ret) {
2702 case 0:
14dd3ad8 2703 redo_body:
d6f07c05 2704 CALL_BODY_SUB((OP*)&myop);
312caa8e 2705 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2706 if (!(flags & G_KEEPERR)) {
ab69dbc2 2707 CLEAR_ERRSV();
8433848b 2708 }
a0d0e21e 2709 break;
6224f72b 2710 case 1:
f86702cc 2711 STATUS_ALL_FAILURE;
a0d0e21e 2712 /* FALL THROUGH */
6224f72b 2713 case 2:
a0d0e21e 2714 /* my_exit() was called */
3280af22 2715 PL_curstash = PL_defstash;
a0d0e21e 2716 FREETMPS;
14dd3ad8 2717 JMPENV_POP;
cc3604b1 2718 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2719 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2720 my_exit_jump();
a0d0e21e 2721 /* NOTREACHED */
6224f72b 2722 case 3:
3280af22 2723 if (PL_restartop) {
533c011a 2724 PL_op = PL_restartop;
3280af22 2725 PL_restartop = 0;
312caa8e 2726 goto redo_body;
a0d0e21e 2727 }
3280af22 2728 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2729 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2730 retval = 0;
2731 else {
2732 retval = 1;
3280af22 2733 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2734 }
312caa8e 2735 break;
a0d0e21e 2736 }
a0d0e21e 2737
edb2152a
NC
2738 if (PL_scopestack_ix > oldscope)
2739 delete_eval_scope();
14dd3ad8 2740 JMPENV_POP;
a0d0e21e 2741 }
1e422769 2742
a0d0e21e 2743 if (flags & G_DISCARD) {
3280af22 2744 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2745 retval = 0;
2746 FREETMPS;
2747 LEAVE;
2748 }
533c011a 2749 PL_op = oldop;
a0d0e21e
LW
2750 return retval;
2751}
2752
6e72f9df 2753/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2754
954c1994
GS
2755/*
2756=for apidoc p||eval_sv
2757
2758Tells Perl to C<eval> the string in the SV.
2759
2760=cut
2761*/
2762
a0d0e21e 2763I32
864dbfa3 2764Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2765
8ac85365 2766 /* See G_* flags in cop.h */
a0d0e21e 2767{
97aff369 2768 dVAR;
924508f0 2769 dSP;
a0d0e21e 2770 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2771 VOL I32 oldmark = SP - PL_stack_base;
2772 VOL I32 retval = 0;
6224f72b 2773 int ret;
c4420975 2774 OP* const oldop = PL_op;
db36c5a1 2775 dJMPENV;
84902520 2776
7918f24d
NC
2777 PERL_ARGS_ASSERT_EVAL_SV;
2778
4633a7c4
LW
2779 if (flags & G_DISCARD) {
2780 ENTER;
2781 SAVETMPS;
2782 }
2783
462e5cf6 2784 SAVEOP();
533c011a
NIS
2785 PL_op = (OP*)&myop;
2786 Zero(PL_op, 1, UNOP);
3280af22
NIS
2787 EXTEND(PL_stack_sp, 1);
2788 *++PL_stack_sp = sv;
79072805 2789
4633a7c4
LW
2790 if (!(flags & G_NOARGS))
2791 myop.op_flags = OPf_STACKED;
5f66b61c 2792 myop.op_next = NULL;
6e72f9df 2793 myop.op_type = OP_ENTEREVAL;
4f911530 2794 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2795 if (flags & G_KEEPERR)
2796 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2797
dedbcade
DM
2798 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2799 * before a PUSHEVAL, which corrupts the stack after a croak */
2800 TAINT_PROPER("eval_sv()");
2801
14dd3ad8 2802 JMPENV_PUSH(ret);
6224f72b
GS
2803 switch (ret) {
2804 case 0:
14dd3ad8 2805 redo_body:
d6f07c05 2806 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2807 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2808 if (!(flags & G_KEEPERR)) {
ab69dbc2 2809 CLEAR_ERRSV();
8433848b 2810 }
4633a7c4 2811 break;
6224f72b 2812 case 1:
f86702cc 2813 STATUS_ALL_FAILURE;
4633a7c4 2814 /* FALL THROUGH */
6224f72b 2815 case 2:
4633a7c4 2816 /* my_exit() was called */
3280af22 2817 PL_curstash = PL_defstash;
4633a7c4 2818 FREETMPS;
14dd3ad8 2819 JMPENV_POP;
cc3604b1 2820 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2821 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2822 my_exit_jump();
4633a7c4 2823 /* NOTREACHED */
6224f72b 2824 case 3:
3280af22 2825 if (PL_restartop) {
533c011a 2826 PL_op = PL_restartop;
3280af22 2827 PL_restartop = 0;
312caa8e 2828 goto redo_body;
4633a7c4 2829 }
3280af22 2830 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2831 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2832 retval = 0;
2833 else {
2834 retval = 1;
3280af22 2835 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2836 }
312caa8e 2837 break;
4633a7c4
LW
2838 }
2839
14dd3ad8 2840 JMPENV_POP;
4633a7c4 2841 if (flags & G_DISCARD) {
3280af22 2842 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2843 retval = 0;
2844 FREETMPS;
2845 LEAVE;
2846 }
533c011a 2847 PL_op = oldop;
4633a7c4
LW
2848 return retval;
2849}
2850
954c1994
GS
2851/*
2852=for apidoc p||eval_pv
2853
2854Tells Perl to C<eval> the given string and return an SV* result.
2855
2856=cut
2857*/
2858
137443ea 2859SV*
864dbfa3 2860Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2861{
97aff369 2862 dVAR;
137443ea
PP
2863 dSP;
2864 SV* sv = newSVpv(p, 0);
2865
7918f24d
NC
2866 PERL_ARGS_ASSERT_EVAL_PV;
2867
864dbfa3 2868 eval_sv(sv, G_SCALAR);
137443ea
PP
2869 SvREFCNT_dec(sv);
2870
2871 SPAGAIN;
2872 sv = POPs;
2873 PUTBACK;
2874
2d8e6c8d 2875 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2876 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2877 }
137443ea
PP
2878
2879 return sv;
2880}
2881
4633a7c4
LW
2882/* Require a module. */
2883
954c1994 2884/*
ccfc67b7
JH
2885=head1 Embedding Functions
2886
954c1994
GS
2887=for apidoc p||require_pv
2888
7d3fb230
BS
2889Tells Perl to C<require> the file named by the string argument. It is
2890analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2891implemented that way; consider using load_module instead.
954c1994 2892
7d3fb230 2893=cut */
954c1994 2894
4633a7c4 2895void
864dbfa3 2896Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2897{
97aff369 2898 dVAR;
d3acc0f7 2899 dSP;
97aff369 2900 SV* sv;
7918f24d
NC
2901
2902 PERL_ARGS_ASSERT_REQUIRE_PV;
2903
e788e7d3 2904 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2905 PUTBACK;
be41e5d9
NC
2906 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2907 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2908 SPAGAIN;
2909 POPSTACK;
79072805
LW
2910}
2911
76e3520e 2912STATIC void
e1ec3a88 2913S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2914{
ab821d7f 2915 /* This message really ought to be max 23 lines.
75c72d73 2916 * Removed -h because the user already knows that option. Others? */
fb73857a 2917
27da23d5 2918 static const char * const usage_msg[] = {
aefc56c5 2919"-0[octal] specify record separator (\\0, if no argument)",
aefc56c5
SF
2920"-a autosplit mode with -n or -p (splits $_ into @F)",
2921"-C[number/list] enables the listed Unicode features",
2922"-c check syntax only (runs BEGIN and CHECK blocks)",
2923"-d[:debugger] run program under debugger",
2924"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2925"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2926"-E program like -e, but enables all optional features",
aefc56c5 2927"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2928"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2929"-i[extension] edit <> files in place (makes backup if extension supplied)",
2930"-Idirectory specify @INC/#include directory (several -I's allowed)",
2931"-l[octal] enable line ending processing, specifies line terminator",
2932"-[mM][-]module execute \"use/no module...\" before executing program",
2933"-n assume \"while (<>) { ... }\" loop around program",
2934"-p assume loop like -n but print line also, like sed",
aefc56c5
SF
2935"-s enable rudimentary parsing for switches after programfile",
2936"-S look for programfile using PATH environment variable",
2937"-t enable tainting warnings",
2938"-T enable tainting checks",
2939"-u dump core after parsing program",
2940"-U allow unsafe operations",
2941"-v print version, subversion (includes VERY IMPORTANT perl info)",
2942"-V[:variable] print configuration summary (or a single Config.pm variable)",
2943"-w enable many useful warnings (RECOMMENDED)",
2944"-W enable all warnings",
2945"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2946"-X disable all warnings",
fb73857a
PP
2947"\n",
2948NULL
2949};
27da23d5 2950 const char * const *p = usage_msg;
fb73857a 2951
7918f24d
NC
2952 PERL_ARGS_ASSERT_USAGE;
2953
b0e47665
GS
2954 PerlIO_printf(PerlIO_stdout(),
2955 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2956 name);
fb73857a 2957 while (*p)
b0e47665 2958 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2959}
2960
b4ab917c
DM
2961/* convert a string of -D options (or digits) into an int.
2962 * sets *s to point to the char after the options */
2963
2964#ifdef DEBUGGING
2965int
e1ec3a88 2966Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2967{
27da23d5 2968 static const char * const usage_msgd[] = {
e6e64d9b
JC
2969 " Debugging flag values: (see also -d)",
2970 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2971 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2972 " l Context (loop) stack processing",
2973 " t Trace execution",
2974 " o Method and overloading resolution",
2975 " c String/numeric conversions",
4c84d7f2 2976 " P Print profiling info, source file input state",
d7a2c63c 2977 " m Memory and SV allocation",
e6e64d9b
JC
2978 " f Format processing",
2979 " r Regular expression parsing and execution",
2980 " x Syntax tree dump",
3679267a 2981 " u Tainting checks",
e6e64d9b
JC
2982 " H Hash dump -- usurps values()",
2983 " X Scratchpad allocation",
2984 " D Cleaning up",
e6e64d9b
JC
2985 " T Tokenising",
2986 " R Include reference counts of dumped variables (eg when using -Ds)",
2987 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2988 " v Verbose: use in conjunction with other flags",
2989 " C Copy On Write",
2990 " A Consistency checks on internal structures",
3679267a 2991 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2992 NULL
2993 };
b4ab917c 2994 int i = 0;
7918f24d
NC
2995
2996 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2997
b4ab917c
DM
2998 if (isALPHA(**s)) {
2999 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 3000 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
3001
3002 for (; isALNUM(**s); (*s)++) {
c4420975 3003 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3004 if (d)
3005 i |= 1 << (d - debopts);
3006 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3007 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3008 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3009 }
3010 }
e6e64d9b 3011 else if (isDIGIT(**s)) {
b4ab917c
DM
3012 i = atoi(*s);
3013 for (; isALNUM(**s); (*s)++) ;
3014 }
ddcf8bc1 3015 else if (givehelp) {
06e869a4 3016 const char *const *p = usage_msgd;
e6e64d9b
JC
3017 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
3018 }
b4ab917c
DM
3019# ifdef EBCDIC
3020 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3021 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3022 "-Dp not implemented on this platform\n");
3023# endif
3024 return i;
3025}
3026#endif
3027
79072805
LW
3028/* This routine handles any switches that can be given during run */
3029
c7030b81
NC
3030const char *
3031Perl_moreswitches(pTHX_ const char *s)
79072805 3032{
27da23d5 3033 dVAR;
84c133a0 3034 UV rschar;
0544e6df 3035 const char option = *s; /* used to remember option in -m/-M code */
79072805 3036
7918f24d
NC
3037 PERL_ARGS_ASSERT_MORESWITCHES;
3038
79072805
LW
3039 switch (*s) {
3040 case '0':
a863c7d1 3041 {
f2095865 3042 I32 flags = 0;
a3b680e6 3043 STRLEN numlen;
f2095865
JH
3044
3045 SvREFCNT_dec(PL_rs);
3046 if (s[1] == 'x' && s[2]) {
a3b680e6 3047 const char *e = s+=2;
f2095865
JH
3048 U8 *tmps;
3049
a3b680e6
AL
3050 while (*e)
3051 e++;
f2095865
JH
3052 numlen = e - s;
3053 flags = PERL_SCAN_SILENT_ILLDIGIT;
3054 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3055 if (s + numlen < e) {
3056 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3057 numlen = 0;
3058 s--;
3059 }
396482e1 3060 PL_rs = newSVpvs("");
c5661c80 3061 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3062 tmps = (U8*)SvPVX(PL_rs);
3063 uvchr_to_utf8(tmps, rschar);
3064 SvCUR_set(PL_rs, UNISKIP(rschar));
3065 SvUTF8_on(PL_rs);
3066 }
3067 else {
3068 numlen = 4;
3069 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3070 if (rschar & ~((U8)~0))
3071 PL_rs = &PL_sv_undef;
3072 else if (!rschar && numlen >= 2)
396482e1 3073 PL_rs = newSVpvs("");
f2095865
JH
3074 else {
3075 char ch = (char)rschar;
3076 PL_rs = newSVpvn(&ch, 1);
3077 }
3078 }
800633c3 3079 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3080 return s + numlen;
a863c7d1 3081 }
46487f74 3082 case 'C':
a05d7ebb 3083 s++;
dd374669 3084 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3085 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3086 PL_utf8cache = -1;
46487f74 3087 return s;
2304df62 3088 case 'F':
3280af22 3089 PL_minus_F = TRUE;
ebce5377
RGS
3090 PL_splitstr = ++s;
3091 while (*s && !isSPACE(*s)) ++s;
e49e380e 3092 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3093 return s;
79072805 3094 case 'a':
3280af22 3095 PL_minus_a = TRUE;
79072805
LW
3096 s++;
3097 return s;
3098 case 'c':
3280af22 3099 PL_minus_c = TRUE;
79072805
LW
3100 s++;
3101 return s;
3102 case 'd':
f20b2998 3103 forbid_setid('d', FALSE);
4633a7c4 3104 s++;
2cbb2ee1
RGS
3105
3106 /* -dt indicates to the debugger that threads will be used */
3107 if (*s == 't' && !isALNUM(s[1])) {
3108 ++s;
3109 my_setenv("PERL5DB_THREADED", "1");
3110 }
3111
70c94a19
RR
3112 /* The following permits -d:Mod to accepts arguments following an =
3113 in the fashion that -MSome::Mod does. */
3114 if (*s == ':' || *s == '=') {
f85893a1
NC
3115 const char *start = ++s;
3116 const char *const end = s + strlen(s);
396482e1 3117 SV * const sv = newSVpvs("use Devel::");
f85893a1 3118
70c94a19
RR
3119 /* We now allow -d:Module=Foo,Bar */
3120 while(isALNUM(*s) || *s==':') ++s;
3121 if (*s != '=')
f85893a1 3122 sv_catpvn(sv, start, end - start);
70c94a19
RR
3123 else {
3124 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3125 /* Don't use NUL as q// delimiter here, this string goes in the
3126 * environment. */
3127 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3128 }
f85893a1 3129 s = end;
184f32ec 3130 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3131 SvREFCNT_dec(sv);
4633a7c4 3132 }
ed094faf 3133 if (!PL_perldb) {
3280af22 3134 PL_perldb = PERLDB_ALL;
a0d0e21e 3135 init_debugger();
ed094faf 3136 }
79072805
LW
3137 return s;
3138 case 'D':
0453d815 3139 {
79072805 3140#ifdef DEBUGGING
f20b2998 3141 forbid_setid('D', FALSE);
b4ab917c 3142 s++;
dd374669 3143 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3144#else /* !DEBUGGING */
0453d815 3145 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3146 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3147 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3148 for (s++; isALNUM(*s); s++) ;
79072805 3149#endif
79072805 3150 return s;
0453d815 3151 }
4633a7c4 3152 case 'h':
ac27b0f5 3153 usage(PL_origargv[0]);
7ca617d0 3154 my_exit(0);
79072805 3155 case 'i':
43c5f42d 3156 Safefree(PL_inplace);
c030f24b
GH
3157#if defined(__CYGWIN__) /* do backup extension automagically */
3158 if (*(s+1) == '\0') {
c86a4f2e 3159 PL_inplace = savepvs(".bak");
c030f24b
GH
3160 return s+1;
3161 }
3162#endif /* __CYGWIN__ */
5ef5d758 3163 {
d4c19fe8 3164 const char * const start = ++s;
5ef5d758
NC
3165 while (*s && !isSPACE(*s))
3166 ++s;
3167
3168 PL_inplace = savepvn(start, s - start);
3169 }
7b8d334a 3170 if (*s) {
5ef5d758 3171 ++s;
7b8d334a 3172 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3173 s++;
7b8d334a 3174 }
fb73857a 3175 return s;
4e49a025 3176 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3177 forbid_setid('I', FALSE);
fb73857a
PP
3178 ++s;
3179 while (*s && isSPACE(*s))
3180 ++s;
3181 if (*s) {
c7030b81 3182 const char *e, *p;
0df16ed7
GS
3183 p = s;
3184 /* ignore trailing spaces (possibly followed by other switches) */
3185 do {
3186 for (e = p; *e && !isSPACE(*e); e++) ;
3187 p = e;
3188 while (isSPACE(*p))
3189 p++;
3190 } while (*p && *p != '-');
3191 e = savepvn(s, e-s);
20189146 3192 incpush(e, TRUE, TRUE, FALSE, FALSE, TRUE);
0df16ed7
GS
3193 Safefree(e);
3194 s = p;
3195 if (*s == '-')
3196 s++;
79072805
LW
3197 }
3198 else
a67e862a 3199 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3200 return s;
79072805 3201 case 'l':
3280af22 3202 PL_minus_l = TRUE;
79072805 3203 s++;
7889fe52
NIS
3204 if (PL_ors_sv) {
3205 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3206 PL_ors_sv = NULL;
7889fe52 3207 }
79072805 3208 if (isDIGIT(*s)) {
53305cf1 3209 I32 flags = 0;
a3b680e6 3210 STRLEN numlen;
396482e1 3211 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3212 numlen = 3 + (*s == '0');
3213 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3214 s += numlen;
3215 }
3216 else {
8bfdd7d9 3217 if (RsPARA(PL_rs)) {
396482e1 3218 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3219 }
3220 else {
8bfdd7d9 3221 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3222 }
79072805
LW
3223 }
3224 return s;
1a30305b 3225 case 'M':
f20b2998 3226 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3227 /* FALL THROUGH */
3228 case 'm':
f20b2998 3229 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3230 if (*++s) {
c7030b81 3231 const char *start;
b64cb68c 3232 const char *end;
11343788 3233 SV *sv;
e1ec3a88 3234 const char *use = "use ";
0544e6df 3235 bool colon = FALSE;
a5f75d66 3236 /* -M-foo == 'no foo' */
d0043bd1
NC
3237 /* Leading space on " no " is deliberate, to make both
3238 possibilities the same length. */
3239 if (*s == '-') { use = " no "; ++s; }
3240 sv = newSVpvn(use,4);
a5f75d66 3241 start = s;
1a30305b 3242 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3243 while(isALNUM(*s) || *s==':') {
3244 if( *s++ == ':' ) {
3245 if( *s == ':' )
3246 s++;
3247 else
3248 colon = TRUE;
3249 }
3250 }
3251 if (s == start)
3252 Perl_croak(aTHX_ "Module name required with -%c option",
3253 option);
3254 if (colon)
3255 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3256 "contains single ':'",
63da6837 3257 (int)(s - start), start, option);
b64cb68c 3258 end = s + strlen(s);
c07a80fd 3259 if (*s != '=') {
b64cb68c 3260 sv_catpvn(sv, start, end - start);
0544e6df 3261 if (option == 'm') {
c07a80fd 3262 if (*s != '\0')
cea2e8a9 3263 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3264 sv_catpvs( sv, " ()");
c07a80fd
PP
3265 }
3266 } else {
11343788 3267 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3268 /* Use NUL as q''-delimiter. */
3269 sv_catpvs(sv, " split(/,/,q\0");
3270 ++s;
3271 sv_catpvn(sv, s, end - s);
396482e1 3272 sv_catpvs(sv, "\0)");
c07a80fd 3273 }
b64cb68c 3274 s = end;
29a861e7 3275 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3276 }
3277 else
0544e6df 3278 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3279 return s;
79072805 3280 case 'n':
3280af22 3281 PL_minus_n = TRUE;
79072805
LW
3282 s++;
3283 return s;
3284 case 'p':
3280af22 3285 PL_minus_p = TRUE;
79072805
LW
3286 s++;
3287 return s;
3288 case 's':
f20b2998 3289 forbid_setid('s', FALSE);
3280af22 3290 PL_doswitches = TRUE;
79072805
LW
3291 s++;
3292 return s;
6537fe72
MS
3293 case 't':
3294 if (!PL_tainting)
22f7c9c9 3295 TOO_LATE_FOR('t');
6537fe72
MS
3296 s++;
3297 return s;
463ee0b2 3298 case 'T':
3280af22 3299 if (!PL_tainting)
22f7c9c9 3300 TOO_LATE_FOR('T');
463ee0b2
LW
3301 s++;
3302 return s;
79072805 3303 case 'u':
bf4acbe4
GS
3304#ifdef MACOS_TRADITIONAL
3305 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3306#endif
3280af22 3307 PL_do_undump = TRUE;
79072805
LW
3308 s++;
3309 return s;
3310 case 'U':
3280af22 3311 PL_unsafe = TRUE;
79072805
LW
3312 s++;
3313 return s;
3314 case 'v':
d7aa5382 3315 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3316 upg_version(PL_patchlevel, TRUE);
8e9464f1 3317#if !defined(DGUX)
b0e47665 3318 PerlIO_printf(PerlIO_stdout(),
f1f66076 3319 "\nThis is perl, %"SVf
f1f66076
RGS
3320 " built for %s",
3321 SVfARG(vstringify(PL_patchlevel)),
3322 ARCHNAME);
8e9464f1
JH
3323#else /* DGUX */
3324/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3325 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3326 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3327 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3328 PerlIO_printf(PerlIO_stdout(),
3329 Perl_form(aTHX_ " built under %s at %s %s\n",
3330 OSNAME, __DATE__, __TIME__));
3331 PerlIO_printf(PerlIO_stdout(),
3332 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3333 OSVERS));
8e9464f1 3334#endif /* !DGUX */
6abfca00
YO
3335#if defined PERL_PATCHNUM
3336 PerlIO_printf(PerlIO_stdout(),"\nCompiled from: %s",STRINGIFY(PERL_PATCHNUM));
4f68271c 3337#endif
fb73857a
PP
3338#if defined(LOCAL_PATCH_COUNT)
3339 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3340 PerlIO_printf(PerlIO_stdout(),
3341 "\n(with %d registered patch%s, "
3342 "see perl -V for more detail)",
bb7a0f54 3343 LOCAL_PATCH_COUNT,
b0e47665 3344 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3345#endif
1a30305b 3346
b0e47665 3347 PerlIO_printf(PerlIO_stdout(),
9be01f29 3348 "\n\nCopyright 1987-2008, Larry Wall\n");
eae9c151
JH
3349#ifdef MACOS_TRADITIONAL
3350 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3351 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3352 "maintained by Chris Nandor\n");
eae9c151 3353#endif
79072805 3354#ifdef MSDOS
b0e47665
GS
3355 PerlIO_printf(PerlIO_stdout(),
3356 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3357#endif
3358#ifdef DJGPP
b0e47665
GS
3359 PerlIO_printf(PerlIO_stdout(),
3360 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3361 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3362#endif
79072805 3363#ifdef OS2
b0e47665
GS
3364 PerlIO_printf(PerlIO_stdout(),
3365 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3366 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3367#endif
79072805 3368#ifdef atarist
b0e47665
GS
3369 PerlIO_printf(PerlIO_stdout(),
3370 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3371#endif
a3f9223b 3372#ifdef __BEOS__
b0e47665
GS
3373 PerlIO_printf(PerlIO_stdout(),
3374 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3375#endif
1d84e8df 3376#ifdef MPE
b0e47665 3377 PerlIO_printf(PerlIO_stdout(),
e583a879 3378 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3379#endif
9d116dd7 3380#ifdef OEMVS
b0e47665
GS
3381 PerlIO_printf(PerlIO_stdout(),
3382 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3383#endif
495c5fdc 3384#ifdef __VOS__
b0e47665 3385 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3386 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3387#endif
092bebab 3388#ifdef __OPEN_VM
b0e47665
GS
3389 PerlIO_printf(PerlIO_stdout(),
3390 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3391#endif
a1a0e61e 3392#ifdef POSIX_BC
b0e47665
GS
3393 PerlIO_printf(PerlIO_stdout(),
3394 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3395#endif
61ae2fbf 3396#ifdef __MINT__
b0e47665
GS
3397 PerlIO_printf(PerlIO_stdout(),
3398 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3399#endif
f83d2536 3400#ifdef EPOC
b0e47665 3401 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3402 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3403#endif
e1caacb4 3404#ifdef UNDER_CE
b475b3e6
JH
3405 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3406 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3407 wce_hitreturn();
3408#endif
a0fd4948 3409#ifdef __SYMBIAN32__
27da23d5
JH
3410 PerlIO_printf(PerlIO_stdout(),
3411 "Symbian port by Nokia, 2004-2005\n");
3412#endif
baed7233
DL
3413#ifdef BINARY_BUILD_NOTICE
3414 BINARY_BUILD_NOTICE;
3415#endif
b0e47665
GS
3416 PerlIO_printf(PerlIO_stdout(),
3417 "\n\
79072805 3418Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3419GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3420Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3421this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3422Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3423 my_exit(0);
79072805 3424 case 'w':
b2e5e6ba 3425 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3426 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3427 }
599cee73
PM
3428 s++;
3429 return s;
3430 case 'W':
ac27b0f5 3431 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3432 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3433 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3434 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3435 s++;
3436 return s;
3437 case 'X':
ac27b0f5 3438 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3439 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3440 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3441 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3442 s++;
3443 return s;
a0d0e21e 3444 case '*':
79072805 3445 case ' ':
d3133c89
NC
3446 while( *s == ' ' )
3447 ++s;
3448 if (s[0] == '-') /* Additional switches on #! line. */
3449 return s+1;
79072805 3450 break;
a0d0e21e 3451 case '-':
79072805 3452 case 0:
51882d45 3453#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3454 case '\r':
3455#endif
79072805
LW
3456 case '\n':
3457 case '\t':
3458 break;
aa689395
PP
3459#ifdef ALTERNATE_SHEBANG
3460 case 'S': /* OS/2 needs -S on "extproc" line. */
3461 break;
3462#endif
79072805 3463 default:
cea2e8a9 3464 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3465 }
bd61b366 3466 return NULL;
79072805
LW
3467}
3468
3469/* compliments of Tom Christiansen */
3470
3471/* unexec() can be found in the Gnu emacs distribution */
ee580363 3472/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3473
3474void
864dbfa3 3475Perl_my_unexec(pTHX)
79072805 3476{
b37c2d43 3477 PERL_UNUSED_CONTEXT;
79072805 3478#ifdef UNEXEC
b37c2d43
AL
3479 SV * prog = newSVpv(BIN_EXP, 0);
3480 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3481 int status = 1;
79072805
LW
3482 extern int etext;
3483
396482e1 3484 sv_catpvs(prog, "/perl");
396482e1 3485 sv_catpvs(file, ".perldump");
79072805 3486
ee580363
GS
3487 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3488 /* unexec prints msg to stderr in case of failure */
6ad3d225 3489 PerlProc_exit(status);
79072805 3490#else
a5f75d66
AD
3491# ifdef VMS
3492# include <lib$routines.h>
3493 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3494# elif defined(WIN32) || defined(__CYGWIN__)
3495 Perl_croak(aTHX_ "dump is not supported");
aa689395 3496# else
79072805 3497 ABORT(); /* for use with undump */
aa689395 3498# endif
a5f75d66 3499#endif
79072805
LW
3500}