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1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
fdf8c088 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 by Larry Wall and others
a687059c 5 *
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6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
a687059c 8 *
8d063cd8
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9 */
10
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11/*
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
13 */
45d8adaa 14
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15/* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
19 */
20
ae3f3efd
PS
21/* PSz 12 Nov 03
22 *
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
26 *
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
32 *
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
38 *
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
42 *
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
45 *
46 * References:
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
55 * CVE candidate:
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
011f1a1a
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85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
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95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
bf357333
NC
99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
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108#endif
109
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110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
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140#define CALL_BODY_EVAL(myop) \
141 if (PL_op == (myop)) \
142 PL_op = Perl_pp_entereval(aTHX); \
143 if (PL_op) \
144 CALLRUNOPS(aTHX);
145
146#define CALL_BODY_SUB(myop) \
147 if (PL_op == (myop)) \
148 PL_op = Perl_pp_entersub(aTHX); \
149 if (PL_op) \
150 CALLRUNOPS(aTHX);
151
152#define CALL_LIST_BODY(cv) \
153 PUSHMARK(PL_stack_sp); \
154 call_sv((SV*)(cv), G_EVAL|G_DISCARD);
155
e6827a76 156static void
daa7d858 157S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 158{
27da23d5 159 dVAR;
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160 if (!PL_curinterp) {
161 PERL_SET_INTERP(my_perl);
3db8f154 162#if defined(USE_ITHREADS)
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163 INIT_THREADS;
164 ALLOC_THREAD_KEY;
165 PERL_SET_THX(my_perl);
166 OP_REFCNT_INIT;
71ad1b0c 167 HINTS_REFCNT_INIT;
e6827a76 168 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 169# endif
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170#ifdef PERL_IMPLICIT_CONTEXT
171 MUTEX_INIT(&PL_my_ctx_mutex);
172# endif
e6827a76 173 }
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NC
174#if defined(USE_ITHREADS)
175 else
176#else
177 /* This always happens for non-ithreads */
178#endif
179 {
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180 PERL_SET_THX(my_perl);
181 }
182}
06d86050 183
32e30700
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184#ifdef PERL_IMPLICIT_SYS
185PerlInterpreter *
7766f137
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186perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
187 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
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188 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
189 struct IPerlDir* ipD, struct IPerlSock* ipS,
190 struct IPerlProc* ipP)
191{
192 PerlInterpreter *my_perl;
9f653bb5 193 /* Newx() needs interpreter, so call malloc() instead */
32e30700 194 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 195 S_init_tls_and_interp(my_perl);
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196 Zero(my_perl, 1, PerlInterpreter);
197 PL_Mem = ipM;
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198 PL_MemShared = ipMS;
199 PL_MemParse = ipMP;
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200 PL_Env = ipE;
201 PL_StdIO = ipStd;
202 PL_LIO = ipLIO;
203 PL_Dir = ipD;
204 PL_Sock = ipS;
205 PL_Proc = ipP;
7cb608b5 206 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 207
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208 return my_perl;
209}
210#else
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211
212/*
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213=head1 Embedding Functions
214
954c1994
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215=for apidoc perl_alloc
216
217Allocates a new Perl interpreter. See L<perlembed>.
218
219=cut
220*/
221
93a17b20 222PerlInterpreter *
cea2e8a9 223perl_alloc(void)
79072805 224{
cea2e8a9 225 PerlInterpreter *my_perl;
79072805 226
9f653bb5 227 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 228 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 229
e6827a76 230 S_init_tls_and_interp(my_perl);
7cb608b5 231#ifndef PERL_TRACK_MEMPOOL
07409e01 232 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
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233#else
234 Zero(my_perl, 1, PerlInterpreter);
235 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
236 return my_perl;
237#endif
79072805 238}
32e30700 239#endif /* PERL_IMPLICIT_SYS */
79072805 240
954c1994
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241/*
242=for apidoc perl_construct
243
244Initializes a new Perl interpreter. See L<perlembed>.
245
246=cut
247*/
248
79072805 249void
0cb96387 250perl_construct(pTHXx)
79072805 251{
27da23d5 252 dVAR;
ed6c66dd 253 PERL_UNUSED_ARG(my_perl);
8990e307 254#ifdef MULTIPLICITY
54aff467 255 init_interp();
ac27b0f5 256 PL_perl_destruct_level = 1;
54aff467
GS
257#else
258 if (PL_perl_destruct_level > 0)
259 init_interp();
260#endif
33f46ff6 261 /* Init the real globals (and main thread)? */
3280af22 262 if (!PL_linestr) {
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263 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
264
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265 PL_linestr = newSV_type(SVt_PVIV);
266 SvGROW(PL_linestr, 80);
79072805 267
3280af22 268 if (!SvREADONLY(&PL_sv_undef)) {
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269 /* set read-only and try to insure than we wont see REFCNT==0
270 very often */
271
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272 SvREADONLY_on(&PL_sv_undef);
273 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 274
3280af22 275 sv_setpv(&PL_sv_no,PL_No);
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276 /* value lookup in void context - happens to have the side effect
277 of caching the numeric forms. */
278 SvIV(&PL_sv_no);
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NIS
279 SvNV(&PL_sv_no);
280 SvREADONLY_on(&PL_sv_no);
281 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 282
3280af22 283 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 284 SvIV(&PL_sv_yes);
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285 SvNV(&PL_sv_yes);
286 SvREADONLY_on(&PL_sv_yes);
287 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
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288
289 SvREADONLY_on(&PL_sv_placeholder);
290 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 291 }
79072805 292
8aad04aa 293 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 294#ifdef PERL_USES_PL_PIDSTATUS
3280af22 295 PL_pidstatus = newHV();
ca0c25f6 296#endif
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297 }
298
396482e1 299 PL_rs = newSVpvs("\n");
dc92893f 300
cea2e8a9 301 init_stacks();
79072805 302
748a9306 303 init_ids();
3280af22 304 PL_lex_state = LEX_NOTPARSING;
a5f75d66 305
312caa8e 306 JMPENV_BOOTSTRAP;
f86702cc
PP
307 STATUS_ALL_SUCCESS;
308
0672f40e 309 init_i18nl10n(1);
36477c24 310 SET_NUMERIC_STANDARD();
0b5b802d 311
ab821d7f 312#if defined(LOCAL_PATCH_COUNT)
3280af22 313 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
314#endif
315
52853b95
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316#ifdef HAVE_INTERP_INTERN
317 sys_intern_init();
318#endif
319
3a1ee7e8 320 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 321
3280af22
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322 PL_fdpid = newAV(); /* for remembering popen pids by fd */
323 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 324 PL_errors = newSVpvs("");
48c6b404 325 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
326 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
327 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 328#ifdef USE_ITHREADS
29a861e7
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329 /* First entry is an array of empty elements */
330 Perl_av_create_and_push(aTHX_ &PL_regex_padav,(SV*)newAV());
13137afc 331 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 332#endif
e5dd39fc 333#ifdef USE_REENTRANT_API
59bd0823 334 Perl_reentrant_init(aTHX);
e5dd39fc 335#endif
3d47000e
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336
337 /* Note that strtab is a rather special HV. Assumptions are made
338 about not iterating on it, and not adding tie magic to it.
339 It is properly deallocated in perl_destruct() */
340 PL_strtab = newHV();
341
3d47000e
AB
342 HvSHAREKEYS_off(PL_strtab); /* mandatory */
343 hv_ksplit(PL_strtab, 512);
344
0631ea03
AB
345#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
346 _dyld_lookup_and_bind
347 ("__environ", (unsigned long *) &environ_pointer, NULL);
348#endif /* environ */
349
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350#ifndef PERL_MICRO
351# ifdef USE_ENVIRON_ARRAY
0631ea03 352 PL_origenviron = environ;
2f42fcb0 353# endif
0631ea03
AB
354#endif
355
5311654c 356 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 357 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
358 * BeOS has those, but returns the wrong value.
359 * The HZ if not originally defined has been by now
360 * been defined as CLK_TCK, if available. */
dbc1d986 361#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
362 PL_clocktick = sysconf(_SC_CLK_TCK);
363 if (PL_clocktick <= 0)
364#endif
365 PL_clocktick = HZ;
366
081fc587
AB
367 PL_stashcache = newHV();
368
8cb289bd 369 PL_patchlevel = Perl_newSVpvf(aTHX_ "v%d.%d.%d", (int)PERL_REVISION,
e6830b13 370 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 371
27da23d5
JH
372#ifdef HAS_MMAP
373 if (!PL_mmap_page_size) {
374#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
375 {
376 SETERRNO(0, SS_NORMAL);
377# ifdef _SC_PAGESIZE
378 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
379# else
380 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
381# endif
382 if ((long) PL_mmap_page_size < 0) {
383 if (errno) {
44f8325f 384 SV * const error = ERRSV;
d4c19fe8 385 SvUPGRADE(error, SVt_PV);
0510663f 386 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
387 }
388 else
389 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
390 }
391 }
392#else
393# ifdef HAS_GETPAGESIZE
394 PL_mmap_page_size = getpagesize();
395# else
396# if defined(I_SYS_PARAM) && defined(PAGESIZE)
397 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
398# endif
399# endif
400#endif
401 if (PL_mmap_page_size <= 0)
402 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
403 (IV) PL_mmap_page_size);
404 }
405#endif /* HAS_MMAP */
406
407#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
408 PL_timesbase.tms_utime = 0;
409 PL_timesbase.tms_stime = 0;
410 PL_timesbase.tms_cutime = 0;
411 PL_timesbase.tms_cstime = 0;
412#endif
413
8990e307 414 ENTER;
79072805
LW
415}
416
954c1994 417/*
62375a60
NIS
418=for apidoc nothreadhook
419
420Stub that provides thread hook for perl_destruct when there are
421no threads.
422
423=cut
424*/
425
426int
4e9e3734 427Perl_nothreadhook(pTHX)
62375a60 428{
96a5add6 429 PERL_UNUSED_CONTEXT;
62375a60
NIS
430 return 0;
431}
432
41e4abd8
NC
433#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
434void
435Perl_dump_sv_child(pTHX_ SV *sv)
436{
437 ssize_t got;
bf357333
NC
438 const int sock = PL_dumper_fd;
439 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
440 union control_un control;
441 struct msghdr msg;
808ad2d0 442 struct iovec vec[2];
bf357333 443 struct cmsghdr *cmptr;
808ad2d0
NC
444 int returned_errno;
445 unsigned char buffer[256];
41e4abd8 446
bf357333 447 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
448 return;
449
450 PerlIO_flush(Perl_debug_log);
451
bf357333
NC
452 /* All these shenanigans are to pass a file descriptor over to our child for
453 it to dump out to. We can't let it hold open the file descriptor when it
454 forks, as the file descriptor it will dump to can turn out to be one end
455 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 456 be open, the wait would be forever.) */
bf357333
NC
457
458 msg.msg_control = control.control;
459 msg.msg_controllen = sizeof(control.control);
460 /* We're a connected socket so we don't need a destination */
461 msg.msg_name = NULL;
462 msg.msg_namelen = 0;
463 msg.msg_iov = vec;
808ad2d0 464 msg.msg_iovlen = 1;
bf357333
NC
465
466 cmptr = CMSG_FIRSTHDR(&msg);
467 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
468 cmptr->cmsg_level = SOL_SOCKET;
469 cmptr->cmsg_type = SCM_RIGHTS;
470 *((int *)CMSG_DATA(cmptr)) = 1;
471
472 vec[0].iov_base = (void*)&sv;
473 vec[0].iov_len = sizeof(sv);
474 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
475
476 if(got < 0) {
bf357333 477 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
478 abort();
479 }
bf357333
NC
480 if(got < sizeof(sv)) {
481 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
482 abort();
483 }
484
808ad2d0
NC
485 /* Return protocol is
486 int: errno value
487 unsigned char: length of location string (0 for empty)
488 unsigned char*: string (not terminated)
489 */
490 vec[0].iov_base = (void*)&returned_errno;
491 vec[0].iov_len = sizeof(returned_errno);
492 vec[1].iov_base = buffer;
493 vec[1].iov_len = 1;
494
495 got = readv(sock, vec, 2);
41e4abd8
NC
496
497 if(got < 0) {
498 perror("Debug leaking scalars parent read failed");
808ad2d0 499 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
500 abort();
501 }
808ad2d0 502 if(got < sizeof(returned_errno) + 1) {
41e4abd8 503 perror("Debug leaking scalars parent short read");
808ad2d0 504 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
505 abort();
506 }
507
808ad2d0
NC
508 if (*buffer) {
509 got = read(sock, buffer + 1, *buffer);
510 if(got < 0) {
511 perror("Debug leaking scalars parent read 2 failed");
512 PerlIO_flush(PerlIO_stderr());
513 abort();
514 }
515
516 if(got < *buffer) {
517 perror("Debug leaking scalars parent short read 2");
518 PerlIO_flush(PerlIO_stderr());
519 abort();
520 }
521 }
522
523 if (returned_errno || *buffer) {
524 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
525 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
526 returned_errno, strerror(returned_errno));
41e4abd8
NC
527 }
528}
529#endif
530
62375a60 531/*
954c1994
GS
532=for apidoc perl_destruct
533
534Shuts down a Perl interpreter. See L<perlembed>.
535
536=cut
537*/
538
31d77e54 539int
0cb96387 540perl_destruct(pTHXx)
79072805 541{
27da23d5 542 dVAR;
8ea43dc8 543 VOL int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 544 HV *hv;
2aa47728 545#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
546 pid_t child;
547#endif
8990e307 548
ed6c66dd 549 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 550
7766f137
GS
551 /* wait for all pseudo-forked children to finish */
552 PERL_WAIT_FOR_CHILDREN;
553
3280af22 554 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
555#ifdef DEBUGGING
556 {
9d4ba2ae
AL
557 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
558 if (s) {
e1ec3a88 559 const int i = atoi(s);
5f05dabc
PP
560 if (destruct_level < i)
561 destruct_level = i;
562 }
4633a7c4
LW
563 }
564#endif
565
27da23d5 566 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
567 dJMPENV;
568 int x = 0;
569
570 JMPENV_PUSH(x);
1b6737cc 571 PERL_UNUSED_VAR(x);
f3faeb53
AB
572 if (PL_endav && !PL_minus_c)
573 call_list(PL_scopestack_ix, PL_endav);
574 JMPENV_POP;
26f423df 575 }
f3faeb53 576 LEAVE;
a0d0e21e
LW
577 FREETMPS;
578
e00b64d4 579 /* Need to flush since END blocks can produce output */
f13a2bc0 580 my_fflush_all();
e00b64d4 581
62375a60
NIS
582 if (CALL_FPTR(PL_threadhook)(aTHX)) {
583 /* Threads hook has vetoed further cleanup */
c301d606 584 PL_veto_cleanup = TRUE;
37038d91 585 return STATUS_EXIT;
62375a60
NIS
586 }
587
2aa47728
NC
588#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
589 if (destruct_level != 0) {
590 /* Fork here to create a child. Our child's job is to preserve the
591 state of scalars prior to destruction, so that we can instruct it
592 to dump any scalars that we later find have leaked.
593 There's no subtlety in this code - it assumes POSIX, and it doesn't
594 fail gracefully */
595 int fd[2];
596
597 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
598 perror("Debug leaking scalars socketpair failed");
599 abort();
600 }
601
602 child = fork();
603 if(child == -1) {
604 perror("Debug leaking scalars fork failed");
605 abort();
606 }
607 if (!child) {
608 /* We are the child */
3125a5a4
NC
609 const int sock = fd[1];
610 const int debug_fd = PerlIO_fileno(Perl_debug_log);
611 int f;
808ad2d0
NC
612 const char *where;
613 /* Our success message is an integer 0, and a char 0 */
614 static const char success[sizeof(int) + 1];
3125a5a4 615
2aa47728 616 close(fd[0]);
2aa47728 617
3125a5a4
NC
618 /* We need to close all other file descriptors otherwise we end up
619 with interesting hangs, where the parent closes its end of a
620 pipe, and sits waiting for (another) child to terminate. Only
621 that child never terminates, because it never gets EOF, because
bf357333
NC
622 we also have the far end of the pipe open. We even need to
623 close the debugging fd, because sometimes it happens to be one
624 end of a pipe, and a process is waiting on the other end for
625 EOF. Normally it would be closed at some point earlier in
626 destruction, but if we happen to cause the pipe to remain open,
627 EOF never occurs, and we get an infinite hang. Hence all the
628 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
629
630 f = sysconf(_SC_OPEN_MAX);
631 if(f < 0) {
808ad2d0
NC
632 where = "sysconf failed";
633 goto abort;
3125a5a4
NC
634 }
635 while (f--) {
636 if (f == sock)
637 continue;
3125a5a4
NC
638 close(f);
639 }
640
2aa47728
NC
641 while (1) {
642 SV *target;
bf357333
NC
643 union control_un control;
644 struct msghdr msg;
645 struct iovec vec[1];
646 struct cmsghdr *cmptr;
647 ssize_t got;
648 int got_fd;
649
650 msg.msg_control = control.control;
651 msg.msg_controllen = sizeof(control.control);
652 /* We're a connected socket so we don't need a source */
653 msg.msg_name = NULL;
654 msg.msg_namelen = 0;
655 msg.msg_iov = vec;
656 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
657
658 vec[0].iov_base = (void*)&target;
659 vec[0].iov_len = sizeof(target);
660
661 got = recvmsg(sock, &msg, 0);
2aa47728
NC
662
663 if(got == 0)
664 break;
665 if(got < 0) {
808ad2d0
NC
666 where = "recv failed";
667 goto abort;
2aa47728
NC
668 }
669 if(got < sizeof(target)) {
808ad2d0
NC
670 where = "short recv";
671 goto abort;
2aa47728 672 }
bf357333 673
808ad2d0
NC
674 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
675 where = "no cmsg";
676 goto abort;
677 }
678 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
679 where = "wrong cmsg_len";
680 goto abort;
681 }
682 if(cmptr->cmsg_level != SOL_SOCKET) {
683 where = "wrong cmsg_level";
684 goto abort;
685 }
686 if(cmptr->cmsg_type != SCM_RIGHTS) {
687 where = "wrong cmsg_type";
688 goto abort;
689 }
bf357333
NC
690
691 got_fd = *(int*)CMSG_DATA(cmptr);
692 /* For our last little bit of trickery, put the file descriptor
693 back into Perl_debug_log, as if we never actually closed it
694 */
808ad2d0
NC
695 if(got_fd != debug_fd) {
696 if (dup2(got_fd, debug_fd) == -1) {
697 where = "dup2";
698 goto abort;
699 }
700 }
2aa47728 701 sv_dump(target);
bf357333 702
2aa47728
NC
703 PerlIO_flush(Perl_debug_log);
704
808ad2d0 705 got = write(sock, &success, sizeof(success));
2aa47728
NC
706
707 if(got < 0) {
808ad2d0
NC
708 where = "write failed";
709 goto abort;
2aa47728 710 }
808ad2d0
NC
711 if(got < sizeof(success)) {
712 where = "short write";
713 goto abort;
2aa47728
NC
714 }
715 }
716 _exit(0);
808ad2d0
NC
717 abort:
718 {
719 int send_errno = errno;
720 unsigned char length = (unsigned char) strlen(where);
721 struct iovec failure[3] = {
722 {(void*)&send_errno, sizeof(send_errno)},
723 {&length, 1},
724 {(void*)where, length}
725 };
726 int got = writev(sock, failure, 3);
727 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
728 in the parent if we try to read from the socketpair after the
729 child has exited, even if there was data to read.
730 So sleep a bit to give the parent a fighting chance of
731 reading the data. */
732 sleep(2);
733 _exit((got == -1) ? errno : 0);
734 }
bf357333 735 /* End of child. */
2aa47728 736 }
41e4abd8 737 PL_dumper_fd = fd[0];
2aa47728
NC
738 close(fd[1]);
739 }
740#endif
741
ff0cee69
PP
742 /* We must account for everything. */
743
744 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
745 /* Do this now, because destroying ops can cause new SVs to be generated
746 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
747 PL_curcop to point to a valid op from which the filename structure
748 member is copied. */
749 PL_curcop = &PL_compiling;
3280af22 750 if (PL_main_root) {
4e380990
DM
751 /* ensure comppad/curpad to refer to main's pad */
752 if (CvPADLIST(PL_main_cv)) {
753 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
754 }
3280af22 755 op_free(PL_main_root);
5f66b61c 756 PL_main_root = NULL;
a0d0e21e 757 }
5f66b61c 758 PL_main_start = NULL;
3280af22 759 SvREFCNT_dec(PL_main_cv);
601f1833 760 PL_main_cv = NULL;
24d3c518 761 PL_dirty = TRUE;
ff0cee69 762
13621cfb
NIS
763 /* Tell PerlIO we are about to tear things apart in case
764 we have layers which are using resources that should
765 be cleaned up now.
766 */
767
768 PerlIO_destruct(aTHX);
769
3280af22 770 if (PL_sv_objcount) {
a0d0e21e
LW
771 /*
772 * Try to destruct global references. We do this first so that the
773 * destructors and destructees still exist. Some sv's might remain.
774 * Non-referenced objects are on their own.
775 */
a0d0e21e 776 sv_clean_objs();
bf9cdc68 777 PL_sv_objcount = 0;
a0de6cf5 778 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 779 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
780 }
781
5cd24f17 782 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 783 SvREFCNT_dec(PL_warnhook);
a0714e2c 784 PL_warnhook = NULL;
3280af22 785 SvREFCNT_dec(PL_diehook);
a0714e2c 786 PL_diehook = NULL;
5cd24f17 787
4b556e6c 788 /* call exit list functions */
3280af22 789 while (PL_exitlistlen-- > 0)
acfe0abc 790 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 791
3280af22 792 Safefree(PL_exitlist);
4b556e6c 793
1c4916e5
CB
794 PL_exitlist = NULL;
795 PL_exitlistlen = 0;
796
551a8b83 797 /* jettison our possibly duplicated environment */
4b647fb0
DM
798 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
799 * so we certainly shouldn't free it here
800 */
2f42fcb0 801#ifndef PERL_MICRO
4b647fb0 802#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 803 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
804#ifdef USE_ITHREADS
805 /* only main thread can free environ[0] contents */
806 && PL_curinterp == aTHX
807#endif
808 )
809 {
551a8b83
JH
810 I32 i;
811
812 for (i = 0; environ[i]; i++)
4b420006 813 safesysfree(environ[i]);
0631ea03 814
4b420006
JH
815 /* Must use safesysfree() when working with environ. */
816 safesysfree(environ);
551a8b83
JH
817
818 environ = PL_origenviron;
819 }
820#endif
2f42fcb0 821#endif /* !PERL_MICRO */
551a8b83 822
30985c42
JH
823 if (destruct_level == 0) {
824
825 DEBUG_P(debprofdump());
826
827#if defined(PERLIO_LAYERS)
828 /* No more IO - including error messages ! */
829 PerlIO_cleanup(aTHX);
830#endif
831
832 CopFILE_free(&PL_compiling);
833 CopSTASH_free(&PL_compiling);
834
835 /* The exit() function will do everything that needs doing. */
836 return STATUS_EXIT;
837 }
838
804ffa60 839 /* reset so print() ends up where we expect */
a0714e2c 840 setdefout(NULL);
804ffa60 841
5f8cb046
DM
842#ifdef USE_ITHREADS
843 /* the syntax tree is shared between clones
844 * so op_free(PL_main_root) only ReREFCNT_dec's
845 * REGEXPs in the parent interpreter
846 * we need to manually ReREFCNT_dec for the clones
847 */
848 {
849 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 850 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
851
852 while (i) {
c4420975 853 SV * const resv = ary[--i];
35061a7e
DM
854
855 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 856 /* this is PL_reg_curpm, already freed
35061a7e
DM
857 * flag is set in regexec.c:S_regtry
858 */
859 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 860 }
1cc8b4c5
AB
861 else if(SvREPADTMP(resv)) {
862 SvREPADTMP_off(resv);
863 }
a560f29b
NC
864 else if(SvIOKp(resv)) {
865 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
866 ReREFCNT_dec(re);
867 }
868 }
869 }
870 SvREFCNT_dec(PL_regex_padav);
7d49f689 871 PL_regex_padav = NULL;
5f8cb046
DM
872 PL_regex_pad = NULL;
873#endif
874
081fc587
AB
875 SvREFCNT_dec((SV*) PL_stashcache);
876 PL_stashcache = NULL;
877
5f05dabc
PP
878 /* loosen bonds of global variables */
879
3280af22
NIS
880 if(PL_rsfp) {
881 (void)PerlIO_close(PL_rsfp);
4608196e 882 PL_rsfp = NULL;
8ebc5c01
PP
883 }
884
885 /* Filters for program text */
3280af22 886 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 887 PL_rsfp_filters = NULL;
8ebc5c01 888
84386e14
RGS
889 if (PL_minus_F) {
890 Safefree(PL_splitstr);
891 PL_splitstr = NULL;
892 }
893
8ebc5c01 894 /* switches */
3280af22
NIS
895 PL_preprocess = FALSE;
896 PL_minus_n = FALSE;
897 PL_minus_p = FALSE;
898 PL_minus_l = FALSE;
899 PL_minus_a = FALSE;
900 PL_minus_F = FALSE;
901 PL_doswitches = FALSE;
599cee73 902 PL_dowarn = G_WARN_OFF;
3280af22
NIS
903 PL_doextract = FALSE;
904 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
905 PL_unsafe = FALSE;
906
907 Safefree(PL_inplace);
bd61b366 908 PL_inplace = NULL;
a7cb1f99 909 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
910
911 if (PL_e_script) {
912 SvREFCNT_dec(PL_e_script);
a0714e2c 913 PL_e_script = NULL;
8ebc5c01
PP
914 }
915
bf9cdc68
RG
916 PL_perldb = 0;
917
8ebc5c01
PP
918 /* magical thingies */
919
7889fe52 920 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 921 PL_ofs_sv = NULL;
5f05dabc 922
7889fe52 923 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 924 PL_ors_sv = NULL;
8ebc5c01 925
3280af22 926 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 927 PL_rs = NULL;
dc92893f 928
d33b2eba 929 Safefree(PL_osname); /* $^O */
bd61b366 930 PL_osname = NULL;
5f05dabc 931
3280af22 932 SvREFCNT_dec(PL_statname);
a0714e2c
SS
933 PL_statname = NULL;
934 PL_statgv = NULL;
5f05dabc 935
8ebc5c01
PP
936 /* defgv, aka *_ should be taken care of elsewhere */
937
8ebc5c01 938 /* clean up after study() */
3280af22 939 SvREFCNT_dec(PL_lastscream);
a0714e2c 940 PL_lastscream = NULL;
3280af22
NIS
941 Safefree(PL_screamfirst);
942 PL_screamfirst = 0;
943 Safefree(PL_screamnext);
944 PL_screamnext = 0;
8ebc5c01 945
7d5ea4e7
GS
946 /* float buffer */
947 Safefree(PL_efloatbuf);
bd61b366 948 PL_efloatbuf = NULL;
7d5ea4e7
GS
949 PL_efloatsize = 0;
950
8ebc5c01 951 /* startup and shutdown function lists */
3280af22 952 SvREFCNT_dec(PL_beginav);
5a837c8f 953 SvREFCNT_dec(PL_beginav_save);
3280af22 954 SvREFCNT_dec(PL_endav);
7d30b5c4 955 SvREFCNT_dec(PL_checkav);
ece599bd 956 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
957 SvREFCNT_dec(PL_unitcheckav);
958 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 959 SvREFCNT_dec(PL_initav);
7d49f689
NC
960 PL_beginav = NULL;
961 PL_beginav_save = NULL;
962 PL_endav = NULL;
963 PL_checkav = NULL;
964 PL_checkav_save = NULL;
3c10abe3
AG
965 PL_unitcheckav = NULL;
966 PL_unitcheckav_save = NULL;
7d49f689 967 PL_initav = NULL;
5618dfe8 968
8ebc5c01 969 /* shortcuts just get cleared */
a0714e2c
SS
970 PL_envgv = NULL;
971 PL_incgv = NULL;
972 PL_hintgv = NULL;
973 PL_errgv = NULL;
974 PL_argvgv = NULL;
975 PL_argvoutgv = NULL;
976 PL_stdingv = NULL;
977 PL_stderrgv = NULL;
978 PL_last_in_gv = NULL;
979 PL_replgv = NULL;
980 PL_DBgv = NULL;
981 PL_DBline = NULL;
982 PL_DBsub = NULL;
983 PL_DBsingle = NULL;
984 PL_DBtrace = NULL;
985 PL_DBsignal = NULL;
986 PL_DBassertion = NULL;
601f1833 987 PL_DBcv = NULL;
7d49f689 988 PL_dbargs = NULL;
5c284bb0 989 PL_debstash = NULL;
8ebc5c01 990
7a1c5554 991 SvREFCNT_dec(PL_argvout_stack);
7d49f689 992 PL_argvout_stack = NULL;
8ebc5c01 993
5c831c24 994 SvREFCNT_dec(PL_modglobal);
5c284bb0 995 PL_modglobal = NULL;
5c831c24 996 SvREFCNT_dec(PL_preambleav);
7d49f689 997 PL_preambleav = NULL;
5c831c24 998 SvREFCNT_dec(PL_subname);
a0714e2c 999 PL_subname = NULL;
5c831c24 1000 SvREFCNT_dec(PL_linestr);
a0714e2c 1001 PL_linestr = NULL;
ca0c25f6 1002#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1003 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1004 PL_pidstatus = NULL;
ca0c25f6 1005#endif
5c831c24 1006 SvREFCNT_dec(PL_toptarget);
a0714e2c 1007 PL_toptarget = NULL;
5c831c24 1008 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1009 PL_bodytarget = NULL;
1010 PL_formtarget = NULL;
5c831c24 1011
d33b2eba 1012 /* free locale stuff */
b9582b6a 1013#ifdef USE_LOCALE_COLLATE
d33b2eba 1014 Safefree(PL_collation_name);
bd61b366 1015 PL_collation_name = NULL;
b9582b6a 1016#endif
d33b2eba 1017
b9582b6a 1018#ifdef USE_LOCALE_NUMERIC
d33b2eba 1019 Safefree(PL_numeric_name);
bd61b366 1020 PL_numeric_name = NULL;
a453c169 1021 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1022 PL_numeric_radix_sv = NULL;
b9582b6a 1023#endif
d33b2eba 1024
5c831c24
GS
1025 /* clear utf8 character classes */
1026 SvREFCNT_dec(PL_utf8_alnum);
1027 SvREFCNT_dec(PL_utf8_alnumc);
1028 SvREFCNT_dec(PL_utf8_ascii);
1029 SvREFCNT_dec(PL_utf8_alpha);
1030 SvREFCNT_dec(PL_utf8_space);
1031 SvREFCNT_dec(PL_utf8_cntrl);
1032 SvREFCNT_dec(PL_utf8_graph);
1033 SvREFCNT_dec(PL_utf8_digit);
1034 SvREFCNT_dec(PL_utf8_upper);
1035 SvREFCNT_dec(PL_utf8_lower);
1036 SvREFCNT_dec(PL_utf8_print);
1037 SvREFCNT_dec(PL_utf8_punct);
1038 SvREFCNT_dec(PL_utf8_xdigit);
1039 SvREFCNT_dec(PL_utf8_mark);
1040 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1041 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1042 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1043 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1044 SvREFCNT_dec(PL_utf8_idstart);
1045 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1046 PL_utf8_alnum = NULL;
1047 PL_utf8_alnumc = NULL;
1048 PL_utf8_ascii = NULL;
1049 PL_utf8_alpha = NULL;
1050 PL_utf8_space = NULL;
1051 PL_utf8_cntrl = NULL;
1052 PL_utf8_graph = NULL;
1053 PL_utf8_digit = NULL;
1054 PL_utf8_upper = NULL;
1055 PL_utf8_lower = NULL;
1056 PL_utf8_print = NULL;
1057 PL_utf8_punct = NULL;
1058 PL_utf8_xdigit = NULL;
1059 PL_utf8_mark = NULL;
1060 PL_utf8_toupper = NULL;
1061 PL_utf8_totitle = NULL;
1062 PL_utf8_tolower = NULL;
1063 PL_utf8_tofold = NULL;
1064 PL_utf8_idstart = NULL;
1065 PL_utf8_idcont = NULL;
5c831c24 1066
971a9dd3 1067 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1068 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1069 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1070 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1071 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1072 CopFILE_free(&PL_compiling);
1073 CopSTASH_free(&PL_compiling);
5c831c24 1074
a0d0e21e 1075 /* Prepare to destruct main symbol table. */
5f05dabc 1076
3280af22
NIS
1077 hv = PL_defstash;
1078 PL_defstash = 0;
a0d0e21e 1079 SvREFCNT_dec(hv);
5c831c24 1080 SvREFCNT_dec(PL_curstname);
a0714e2c 1081 PL_curstname = NULL;
a0d0e21e 1082
5a844595
GS
1083 /* clear queued errors */
1084 SvREFCNT_dec(PL_errors);
a0714e2c 1085 PL_errors = NULL;
5a844595 1086
a0d0e21e 1087 FREETMPS;
0453d815 1088 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1089 if (PL_scopestack_ix != 0)
9014280d 1090 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1091 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1092 (long)PL_scopestack_ix);
1093 if (PL_savestack_ix != 0)
9014280d 1094 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1095 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1096 (long)PL_savestack_ix);
1097 if (PL_tmps_floor != -1)
9014280d 1098 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1099 (long)PL_tmps_floor + 1);
a0d0e21e 1100 if (cxstack_ix != -1)
9014280d 1101 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1102 (long)cxstack_ix + 1);
a0d0e21e 1103 }
8990e307
LW
1104
1105 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1106 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1107 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1108
1109 /* the 2 is for PL_fdpid and PL_strtab */
1110 while (PL_sv_count > 2 && sv_clean_all())
1111 ;
1112
d33b2eba
GS
1113 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1114 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1115 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1116 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1117
d4777f27
GS
1118 AvREAL_off(PL_fdpid); /* no surviving entries */
1119 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1120 PL_fdpid = NULL;
d33b2eba 1121
6c644e78
GS
1122#ifdef HAVE_INTERP_INTERN
1123 sys_intern_clear();
1124#endif
1125
6e72f9df
PP
1126 /* Destruct the global string table. */
1127 {
1128 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1129 * so that sv_free() won't fail on them.
80459961
NC
1130 * Now that the global string table is using a single hunk of memory
1131 * for both HE and HEK, we either need to explicitly unshare it the
1132 * correct way, or actually free things here.
6e72f9df 1133 */
80459961
NC
1134 I32 riter = 0;
1135 const I32 max = HvMAX(PL_strtab);
c4420975 1136 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1137 HE *hent = array[0];
1138
6e72f9df 1139 for (;;) {
0453d815 1140 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1141 HE * const next = HeNEXT(hent);
9014280d 1142 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1143 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1144 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1145 Safefree(hent);
1146 hent = next;
6e72f9df
PP
1147 }
1148 if (!hent) {
1149 if (++riter > max)
1150 break;
1151 hent = array[riter];
1152 }
1153 }
80459961
NC
1154
1155 Safefree(array);
1156 HvARRAY(PL_strtab) = 0;
1157 HvTOTALKEYS(PL_strtab) = 0;
1158 HvFILL(PL_strtab) = 0;
6e72f9df 1159 }
3280af22 1160 SvREFCNT_dec(PL_strtab);
6e72f9df 1161
e652bb2f 1162#ifdef USE_ITHREADS
c21d1a0f 1163 /* free the pointer tables used for cloning */
a0739874 1164 ptr_table_free(PL_ptr_table);
bf9cdc68 1165 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1166#endif
a0739874 1167
d33b2eba
GS
1168 /* free special SVs */
1169
1170 SvREFCNT(&PL_sv_yes) = 0;
1171 sv_clear(&PL_sv_yes);
1172 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1173 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1174
1175 SvREFCNT(&PL_sv_no) = 0;
1176 sv_clear(&PL_sv_no);
1177 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1178 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1179
9f375a43
DM
1180 {
1181 int i;
1182 for (i=0; i<=2; i++) {
1183 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1184 sv_clear(PERL_DEBUG_PAD(i));
1185 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1186 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1187 }
1188 }
1189
0453d815 1190 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1191 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1192
eba0f806
DM
1193#ifdef DEBUG_LEAKING_SCALARS
1194 if (PL_sv_count != 0) {
1195 SV* sva;
1196 SV* sv;
1197 register SV* svend;
1198
1199 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1200 svend = &sva[SvREFCNT(sva)];
1201 for (sv = sva + 1; sv < svend; ++sv) {
1202 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1203 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1204 " flags=0x%"UVxf
fd0854ff
DM
1205 " refcnt=%"UVuf pTHX__FORMAT "\n"
1206 "\tallocated at %s:%d %s %s%s\n",
6c9570dc 1207 (void*)sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
fd0854ff
DM
1208 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1209 sv->sv_debug_line,
1210 sv->sv_debug_inpad ? "for" : "by",
1211 sv->sv_debug_optype ?
1212 PL_op_name[sv->sv_debug_optype]: "(none)",
1213 sv->sv_debug_cloned ? " (cloned)" : ""
1214 );
2aa47728 1215#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1216 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1217#endif
eba0f806
DM
1218 }
1219 }
1220 }
1221 }
2aa47728
NC
1222#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1223 {
1224 int status;
1225 fd_set rset;
1226 /* Wait for up to 4 seconds for child to terminate.
1227 This seems to be the least effort way of timing out on reaping
1228 its exit status. */
1229 struct timeval waitfor = {4, 0};
41e4abd8 1230 int sock = PL_dumper_fd;
2aa47728
NC
1231
1232 shutdown(sock, 1);
1233 FD_ZERO(&rset);
1234 FD_SET(sock, &rset);
1235 select(sock + 1, &rset, NULL, NULL, &waitfor);
1236 waitpid(child, &status, WNOHANG);
1237 close(sock);
1238 }
1239#endif
eba0f806 1240#endif
bf9cdc68 1241 PL_sv_count = 0;
eba0f806 1242
f1fac472
NC
1243#ifdef PERL_DEBUG_READONLY_OPS
1244 free(PL_slabs);
1245 PL_slabs = NULL;
1246 PL_slab_count = 0;
1247#endif
eba0f806 1248
56a2bab7 1249#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1250 /* No more IO - including error messages ! */
1251 PerlIO_cleanup(aTHX);
1252#endif
1253
9f4bd222 1254 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1255 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1256 for no arg - and will try and SvREFCNT_dec it.
1257 */
1258 SvREFCNT(&PL_sv_undef) = 0;
1259 SvREADONLY_off(&PL_sv_undef);
1260
3280af22 1261 Safefree(PL_origfilename);
bd61b366 1262 PL_origfilename = NULL;
3280af22 1263 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1264 PL_reg_start_tmp = (char**)NULL;
1265 PL_reg_start_tmpl = 0;
43c5f42d 1266 Safefree(PL_reg_curpm);
82ba1be6 1267 Safefree(PL_reg_poscache);
dd28f7bb 1268 free_tied_hv_pool();
3280af22 1269 Safefree(PL_op_mask);
cf36064f 1270 Safefree(PL_psig_ptr);
bf9cdc68 1271 PL_psig_ptr = (SV**)NULL;
cf36064f 1272 Safefree(PL_psig_name);
bf9cdc68 1273 PL_psig_name = (SV**)NULL;
2c2666fc 1274 Safefree(PL_bitcount);
bd61b366 1275 PL_bitcount = NULL;
ce08f86c 1276 Safefree(PL_psig_pend);
bf9cdc68 1277 PL_psig_pend = (int*)NULL;
a0714e2c 1278 PL_formfeed = NULL;
6e72f9df 1279 nuke_stacks();
bf9cdc68
RG
1280 PL_tainting = FALSE;
1281 PL_taint_warn = FALSE;
3280af22 1282 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1283 PL_debug = 0;
ac27b0f5 1284
a0d0e21e 1285 DEBUG_P(debprofdump());
d33b2eba 1286
e5dd39fc 1287#ifdef USE_REENTRANT_API
10bc17b6 1288 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1289#endif
1290
612f20c3
GS
1291 sv_free_arenas();
1292
5d9a96ca
DM
1293 while (PL_regmatch_slab) {
1294 regmatch_slab *s = PL_regmatch_slab;
1295 PL_regmatch_slab = PL_regmatch_slab->next;
1296 Safefree(s);
1297 }
1298
fc36a67e
PP
1299 /* As the absolutely last thing, free the non-arena SV for mess() */
1300
3280af22 1301 if (PL_mess_sv) {
f350b448
NC
1302 /* we know that type == SVt_PVMG */
1303
9c63abab 1304 /* it could have accumulated taint magic */
f350b448
NC
1305 MAGIC* mg;
1306 MAGIC* moremagic;
1307 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1308 moremagic = mg->mg_moremagic;
1309 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1310 && mg->mg_len >= 0)
1311 Safefree(mg->mg_ptr);
1312 Safefree(mg);
9c63abab 1313 }
f350b448 1314
fc36a67e 1315 /* we know that type >= SVt_PV */
8bd4d4c5 1316 SvPV_free(PL_mess_sv);
3280af22
NIS
1317 Safefree(SvANY(PL_mess_sv));
1318 Safefree(PL_mess_sv);
a0714e2c 1319 PL_mess_sv = NULL;
fc36a67e 1320 }
37038d91 1321 return STATUS_EXIT;
79072805
LW
1322}
1323
954c1994
GS
1324/*
1325=for apidoc perl_free
1326
1327Releases a Perl interpreter. See L<perlembed>.
1328
1329=cut
1330*/
1331
79072805 1332void
0cb96387 1333perl_free(pTHXx)
79072805 1334{
5174512c
NC
1335 dVAR;
1336
c301d606
DM
1337 if (PL_veto_cleanup)
1338 return;
1339
7cb608b5 1340#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1341 {
1342 /*
1343 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1344 * value as we're probably hunting memory leaks then
1345 */
1346 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1347 if (!s || atoi(s) == 0) {
1348 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1349 thread at thread exit. */
1350 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1351 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1352 }
1353 }
7cb608b5
NC
1354#endif
1355
acfe0abc 1356#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1357# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1358 {
acfe0abc 1359# ifdef NETWARE
7af12a34 1360 void *host = nw_internal_host;
acfe0abc 1361# else
7af12a34 1362 void *host = w32_internal_host;
acfe0abc 1363# endif
7af12a34 1364 PerlMem_free(aTHXx);
acfe0abc 1365# ifdef NETWARE
7af12a34 1366 nw_delete_internal_host(host);
acfe0abc 1367# else
7af12a34 1368 win32_delete_internal_host(host);
acfe0abc 1369# endif
7af12a34 1370 }
1c0ca838
GS
1371# else
1372 PerlMem_free(aTHXx);
1373# endif
acfe0abc
GS
1374#else
1375 PerlMem_free(aTHXx);
76e3520e 1376#endif
79072805
LW
1377}
1378
b7f7fff6 1379#if defined(USE_ITHREADS)
aebd1ac7
GA
1380/* provide destructors to clean up the thread key when libperl is unloaded */
1381#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1382
826955bd 1383#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1384#pragma fini "perl_fini"
666ad1ec
GA
1385#elif defined(__sun) && !defined(__GNUC__)
1386#pragma fini (perl_fini)
aebd1ac7
GA
1387#endif
1388
0dbb1585
AL
1389static void
1390#if defined(__GNUC__)
1391__attribute__((destructor))
aebd1ac7 1392#endif
de009b76 1393perl_fini(void)
aebd1ac7 1394{
27da23d5 1395 dVAR;
c301d606 1396 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1397 FREE_THREAD_KEY;
1398}
1399
1400#endif /* WIN32 */
1401#endif /* THREADS */
1402
4b556e6c 1403void
864dbfa3 1404Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1405{
97aff369 1406 dVAR;
3280af22
NIS
1407 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1408 PL_exitlist[PL_exitlistlen].fn = fn;
1409 PL_exitlist[PL_exitlistlen].ptr = ptr;
1410 ++PL_exitlistlen;
4b556e6c
JD
1411}
1412
56cf6df8
RGS
1413#ifdef HAS_PROCSELFEXE
1414/* This is a function so that we don't hold on to MAXPATHLEN
1415 bytes of stack longer than necessary
1416 */
1417STATIC void
e1ec3a88 1418S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1419{
1420 char buf[MAXPATHLEN];
1421 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1422
1423 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1424 includes a spurious NUL which will cause $^X to fail in system
1425 or backticks (this will prevent extensions from being built and
1426 many tests from working). readlink is not meant to add a NUL.
1427 Normal readlink works fine.
1428 */
1429 if (len > 0 && buf[len-1] == '\0') {
1430 len--;
1431 }
1432
1433 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1434 returning the text "unknown" from the readlink rather than the path
1435 to the executable (or returning an error from the readlink). Any valid
1436 path has a '/' in it somewhere, so use that to validate the result.
1437 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1438 */
1439 if (len > 0 && memchr(buf, '/', len)) {
1440 sv_setpvn(sv,buf,len);
1441 }
1442 else {
1443 sv_setpv(sv,arg0);
1444 }
1445}
1446#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1447
1448STATIC void
1449S_set_caret_X(pTHX) {
97aff369 1450 dVAR;
fafc274c 1451 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1452 if (tmpgv) {
1453#ifdef HAS_PROCSELFEXE
1454 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1455#else
1456#ifdef OS2
c69033f2 1457 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1458#else
c69033f2 1459 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1460#endif
1461#endif
1462 }
1463}
1464
954c1994
GS
1465/*
1466=for apidoc perl_parse
1467
1468Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1469
1470=cut
1471*/
1472
79072805 1473int
0cb96387 1474perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1475{
27da23d5 1476 dVAR;
6224f72b 1477 I32 oldscope;
6224f72b 1478 int ret;
db36c5a1 1479 dJMPENV;
8d063cd8 1480
ed6c66dd 1481 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 1482
a687059c
LW
1483#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1484#ifdef IAMSUID
1485#undef IAMSUID
cea2e8a9 1486 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1487setuid perl scripts securely.\n");
ae3f3efd 1488#endif /* IAMSUID */
a687059c
LW
1489#endif
1490
b0891165
JH
1491#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1492 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1493 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1494 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1495 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1496 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1497 if (!PL_rehash_seed_set)
1498 PL_rehash_seed = get_hash_seed();
b0891165 1499 {
9d4ba2ae 1500 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1501
1b6737cc
AL
1502 if (s && (atoi(s) == 1))
1503 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1504 }
1505#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1506
3280af22 1507 PL_origargc = argc;
e2975953 1508 PL_origargv = argv;
a0d0e21e 1509
a2722ac9
GA
1510 if (PL_origalen != 0) {
1511 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1512 }
1513 else {
3cb9023d
JH
1514 /* Set PL_origalen be the sum of the contiguous argv[]
1515 * elements plus the size of the env in case that it is
e9137a8e 1516 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1517 * as the maximum modifiable length of $0. In the worst case
1518 * the area we are able to modify is limited to the size of
43c32782 1519 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1520 * --jhi */
e1ec3a88 1521 const char *s = NULL;
54bfe034 1522 int i;
1b6737cc 1523 const UV mask =
7d8e7db3 1524 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1525 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1526 const UV aligned =
43c32782
JH
1527 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1528
1529 /* See if all the arguments are contiguous in memory. Note
1530 * that 'contiguous' is a loose term because some platforms
1531 * align the argv[] and the envp[]. If the arguments look
1532 * like non-aligned, assume that they are 'strictly' or
1533 * 'traditionally' contiguous. If the arguments look like
1534 * aligned, we just check that they are within aligned
1535 * PTRSIZE bytes. As long as no system has something bizarre
1536 * like the argv[] interleaved with some other data, we are
1537 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1538 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1539 while (*s) s++;
1540 for (i = 1; i < PL_origargc; i++) {
1541 if ((PL_origargv[i] == s + 1
43c32782 1542#ifdef OS2
c8941eeb 1543 || PL_origargv[i] == s + 2
43c32782 1544#endif
c8941eeb
JH
1545 )
1546 ||
1547 (aligned &&
1548 (PL_origargv[i] > s &&
1549 PL_origargv[i] <=
1550 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1551 )
1552 {
1553 s = PL_origargv[i];
1554 while (*s) s++;
1555 }
1556 else
1557 break;
54bfe034 1558 }
54bfe034 1559 }
a4a109c2
JD
1560
1561#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1562 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1563 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1564 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1565 ||
1566 (aligned &&
1567 (PL_origenviron[0] > s &&
1568 PL_origenviron[0] <=
1569 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1570 )
1571 {
9d419b5f 1572#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1573 s = PL_origenviron[0];
1574 while (*s) s++;
1575#endif
bd61b366 1576 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1577 /* Force copy of environment. */
1578 for (i = 1; PL_origenviron[i]; i++) {
1579 if (PL_origenviron[i] == s + 1
1580 ||
1581 (aligned &&
1582 (PL_origenviron[i] > s &&
1583 PL_origenviron[i] <=
1584 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1585 )
1586 {
1587 s = PL_origenviron[i];
1588 while (*s) s++;
1589 }
1590 else
1591 break;
54bfe034 1592 }
43c32782 1593 }
54bfe034 1594 }
a4a109c2
JD
1595#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1596
2d2af554 1597 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1598 }
1599
3280af22 1600 if (PL_do_undump) {
a0d0e21e
LW
1601
1602 /* Come here if running an undumped a.out. */
1603
3280af22
NIS
1604 PL_origfilename = savepv(argv[0]);
1605 PL_do_undump = FALSE;
a0d0e21e 1606 cxstack_ix = -1; /* start label stack again */
748a9306 1607 init_ids();
b7975bdd
NC
1608 assert (!PL_tainted);
1609 TAINT;
1610 S_set_caret_X(aTHX);
1611 TAINT_NOT;
a0d0e21e
LW
1612 init_postdump_symbols(argc,argv,env);
1613 return 0;
1614 }
1615
3280af22 1616 if (PL_main_root) {
3280af22 1617 op_free(PL_main_root);
5f66b61c 1618 PL_main_root = NULL;
ff0cee69 1619 }
5f66b61c 1620 PL_main_start = NULL;
3280af22 1621 SvREFCNT_dec(PL_main_cv);
601f1833 1622 PL_main_cv = NULL;
79072805 1623
3280af22
NIS
1624 time(&PL_basetime);
1625 oldscope = PL_scopestack_ix;
599cee73 1626 PL_dowarn = G_WARN_OFF;
f86702cc 1627
14dd3ad8 1628 JMPENV_PUSH(ret);
6224f72b 1629 switch (ret) {
312caa8e 1630 case 0:
14dd3ad8 1631 parse_body(env,xsinit);
3c10abe3
AG
1632 if (PL_unitcheckav)
1633 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1634 if (PL_checkav)
1635 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1636 ret = 0;
1637 break;
6224f72b
GS
1638 case 1:
1639 STATUS_ALL_FAILURE;
1640 /* FALL THROUGH */
1641 case 2:
1642 /* my_exit() was called */
3280af22 1643 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1644 LEAVE;
1645 FREETMPS;
3280af22 1646 PL_curstash = PL_defstash;
3c10abe3
AG
1647 if (PL_unitcheckav)
1648 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1649 if (PL_checkav)
1650 call_list(oldscope, PL_checkav);
37038d91 1651 ret = STATUS_EXIT;
14dd3ad8 1652 break;
6224f72b 1653 case 3:
bf49b057 1654 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1655 ret = 1;
1656 break;
6224f72b 1657 }
14dd3ad8
GS
1658 JMPENV_POP;
1659 return ret;
1660}
1661
312caa8e 1662STATIC void *
14dd3ad8 1663S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1664{
27da23d5 1665 dVAR;
312caa8e 1666 int argc = PL_origargc;
8f42b153 1667 char **argv = PL_origargv;
e1ec3a88 1668 const char *scriptname = NULL;
312caa8e 1669 VOL bool dosearch = FALSE;
e1ec3a88 1670 const char *validarg = "";
312caa8e 1671 register SV *sv;
47f56822 1672 register char *s, c;
bd61b366 1673 const char *cddir = NULL;
ab019eaa 1674#ifdef USE_SITECUSTOMIZE
20ef40cf 1675 bool minus_f = FALSE;
ab019eaa 1676#endif
312caa8e 1677
3280af22 1678 sv_setpvn(PL_linestr,"",0);
396482e1 1679 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1680 SAVEFREESV(sv);
1681 init_main_stash();
54310121 1682
6224f72b
GS
1683 for (argc--,argv++; argc > 0; argc--,argv++) {
1684 if (argv[0][0] != '-' || !argv[0][1])
1685 break;
1686#ifdef DOSUID
1687 if (*validarg)
1688 validarg = " PHOOEY ";
1689 else
1690 validarg = argv[0];
ae3f3efd
PS
1691 /*
1692 * Can we rely on the kernel to start scripts with argv[1] set to
1693 * contain all #! line switches (the whole line)? (argv[0] is set to
1694 * the interpreter name, argv[2] to the script name; argv[3] and
1695 * above may contain other arguments.)
1696 */
13281fa4 1697#endif
6224f72b
GS
1698 s = argv[0]+1;
1699 reswitch:
47f56822 1700 switch ((c = *s)) {
729a02f2 1701 case 'C':
1d5472a9
GS
1702#ifndef PERL_STRICT_CR
1703 case '\r':
1704#endif
6224f72b
GS
1705 case ' ':
1706 case '0':
1707 case 'F':
1708 case 'a':
1709 case 'c':
1710 case 'd':
1711 case 'D':
1712 case 'h':
1713 case 'i':
1714 case 'l':
1715 case 'M':
1716 case 'm':
1717 case 'n':
1718 case 'p':
1719 case 's':
1720 case 'u':
1721 case 'U':
1722 case 'v':
599cee73
PM
1723 case 'W':
1724 case 'X':
6224f72b 1725 case 'w':
06492da6 1726 case 'A':
97bd5664 1727 if ((s = moreswitches(s)))
6224f72b
GS
1728 goto reswitch;
1729 break;
33b78306 1730
1dbad523 1731 case 't':
22f7c9c9 1732 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1733 if( !PL_tainting ) {
1734 PL_taint_warn = TRUE;
1735 PL_tainting = TRUE;
1736 }
1737 s++;
1738 goto reswitch;
6224f72b 1739 case 'T':
22f7c9c9 1740 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1741 PL_tainting = TRUE;
317ea90d 1742 PL_taint_warn = FALSE;
6224f72b
GS
1743 s++;
1744 goto reswitch;
f86702cc 1745
bc9b29db
RH
1746 case 'E':
1747 PL_minus_E = TRUE;
1748 /* FALL THROUGH */
6224f72b 1749 case 'e':
bf4acbe4
GS
1750#ifdef MACOS_TRADITIONAL
1751 /* ignore -e for Dev:Pseudo argument */
1752 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1753 break;
bf4acbe4 1754#endif
a52eba0e 1755 forbid_setid('e', -1);
3280af22 1756 if (!PL_e_script) {
396482e1 1757 PL_e_script = newSVpvs("");
0cb96387 1758 filter_add(read_e_script, NULL);
6224f72b
GS
1759 }
1760 if (*++s)
3280af22 1761 sv_catpv(PL_e_script, s);
6224f72b 1762 else if (argv[1]) {
3280af22 1763 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1764 argc--,argv++;
1765 }
1766 else
47f56822 1767 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1768 sv_catpvs(PL_e_script, "\n");
6224f72b 1769 break;
afe37c7d 1770
20ef40cf 1771 case 'f':
f5542d3a 1772#ifdef USE_SITECUSTOMIZE
20ef40cf 1773 minus_f = TRUE;
f5542d3a 1774#endif
20ef40cf
GA
1775 s++;
1776 goto reswitch;
1777
6224f72b 1778 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1779 forbid_setid('I', -1);
bd61b366 1780 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1781 argc--,argv++;
1782 }
6224f72b 1783 if (s && *s) {
0df16ed7 1784 STRLEN len = strlen(s);
aec46f14 1785 const char * const p = savepvn(s, len);
88fe16b2 1786 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1787 sv_catpvs(sv, "-I");
0df16ed7 1788 sv_catpvn(sv, p, len);
396482e1 1789 sv_catpvs(sv, " ");
6224f72b 1790 Safefree(p);
0df16ed7
GS
1791 }
1792 else
a67e862a 1793 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1794 break;
1795 case 'P':
a52eba0e 1796 forbid_setid('P', -1);
3280af22 1797 PL_preprocess = TRUE;
6224f72b
GS
1798 s++;
1799 goto reswitch;
1800 case 'S':
a52eba0e 1801 forbid_setid('S', -1);
6224f72b
GS
1802 dosearch = TRUE;
1803 s++;
1804 goto reswitch;
1805 case 'V':
7edfd0ef
NC
1806 {
1807 SV *opts_prog;
1808
29a861e7 1809 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
7edfd0ef
NC
1810 if (*++s != ':') {
1811 STRLEN opts;
1812
396482e1 1813 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1814#ifdef VMS
396482e1 1815 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1816#else
396482e1 1817 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1818#endif
7edfd0ef 1819 opts = SvCUR(opts_prog);
efcaa95b 1820
9cd7d3f2 1821 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1822# ifdef DEBUGGING
e2e4dbf1 1823 " DEBUGGING"
6224f72b 1824# endif
4f185743
NC
1825# ifdef DEBUG_LEAKING_SCALARS
1826 " DEBUG_LEAKING_SCALARS"
1827# endif
85e1fcb9 1828# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1829 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1830# endif
1831# ifdef FAKE_THREADS
e2e4dbf1 1832 " FAKE_THREADS"
85e1fcb9 1833# endif
6224f72b 1834# ifdef MULTIPLICITY
e2e4dbf1 1835 " MULTIPLICITY"
6224f72b 1836# endif
85e1fcb9 1837# ifdef MYMALLOC
e2e4dbf1 1838 " MYMALLOC"
85e1fcb9 1839# endif
3bcf5ed8
SP
1840# ifdef NO_MATHOMS
1841 " NO_MATHOMS"
1842# endif
5e661f6a
NC
1843# ifdef PERL_DEBUG_READONLY_OPS
1844 " PERL_DEBUG_READONLY_OPS"
1845# endif
85e1fcb9 1846# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1847 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1848# endif
1849# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1850 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1851# endif
1852# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1853 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1854# endif
1855# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1856 " PERL_IMPLICIT_SYS"
85e1fcb9 1857# endif
a724edfe
NC
1858# ifdef PERL_MAD
1859 " PERL_MAD"
1860# endif
85e1fcb9 1861# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1862 " PERL_MALLOC_WRAP"
85e1fcb9 1863# endif
4724db38
NC
1864# ifdef PERL_MEM_LOG
1865 " PERL_MEM_LOG"
1866# endif
1867# ifdef PERL_MEM_LOG_ENV
1868 " PERL_MEM_LOG_ENV"
1869# endif
1870# ifdef PERL_MEM_LOG_ENV_FD
1871 " PERL_MEM_LOG_ENV_FD"
1872# endif
1873# ifdef PERL_MEM_LOG_STDERR
1874 " PERL_MEM_LOG_STDERR"
1875# endif
1876# ifdef PERL_MEM_LOG_TIMESTAMP
1877 " PERL_MEM_LOG_TIMESTAMP"
1878# endif
85e1fcb9 1879# ifdef PERL_NEED_APPCTX
e2e4dbf1 1880 " PERL_NEED_APPCTX"
85e1fcb9
SH
1881# endif
1882# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1883 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1884# endif
1885# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1886 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1887# endif
4724db38
NC
1888# ifdef PERL_POISON
1889 " PERL_POISON"
1890# endif
9c0a4d5d
DM
1891# ifdef PERL_TRACK_MEMPOOL
1892 " PERL_TRACK_MEMPOOL"
1893# endif
417cd4a8
SP
1894# ifdef PERL_USE_SAFE_PUTENV
1895 " PERL_USE_SAFE_PUTENV"
1896# endif
4724db38 1897# ifdef PERL_USES_PL_PIDSTATUS
ca0c25f6 1898 " PERL_USES_PL_PIDSTATUS"
4724db38 1899# endif
85e1fcb9 1900# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1901 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1902# endif
1903# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1904 " THREADS_HAVE_PIDS"
85e1fcb9 1905# endif
85e1fcb9 1906# ifdef USE_64_BIT_ALL
e2e4dbf1 1907 " USE_64_BIT_ALL"
ac5e8965 1908# endif
10cc9d2a 1909# ifdef USE_64_BIT_INT
e2e4dbf1 1910 " USE_64_BIT_INT"
10cc9d2a 1911# endif
85e1fcb9 1912# ifdef USE_ITHREADS
e2e4dbf1 1913 " USE_ITHREADS"
85e1fcb9
SH
1914# endif
1915# ifdef USE_LARGE_FILES
e2e4dbf1 1916 " USE_LARGE_FILES"
ac5e8965
JH
1917# endif
1918# ifdef USE_LONG_DOUBLE
e2e4dbf1 1919 " USE_LONG_DOUBLE"
ac5e8965 1920# endif
85e1fcb9 1921# ifdef USE_PERLIO
e2e4dbf1 1922 " USE_PERLIO"
53430762 1923# endif
85e1fcb9 1924# ifdef USE_REENTRANT_API
e2e4dbf1 1925 " USE_REENTRANT_API"
85e1fcb9
SH
1926# endif
1927# ifdef USE_SFIO
e2e4dbf1 1928 " USE_SFIO"
ac5e8965 1929# endif
20ef40cf 1930# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1931 " USE_SITECUSTOMIZE"
20ef40cf 1932# endif
85e1fcb9 1933# ifdef USE_SOCKS
e2e4dbf1 1934 " USE_SOCKS"
b363f7ed 1935# endif
e2e4dbf1 1936 );
efcaa95b 1937
7edfd0ef
NC
1938 while (SvCUR(opts_prog) > opts+76) {
1939 /* find last space after "options: " and before col 76
1940 */
efcaa95b 1941
7edfd0ef 1942 const char *space;
c4420975 1943 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1944 const char c = pv[opts+76];
1945 pv[opts+76] = '\0';
1946 space = strrchr(pv+opts+26, ' ');
1947 pv[opts+76] = c;
1948 if (!space) break; /* "Can't happen" */
efcaa95b 1949
7edfd0ef 1950 /* break the line before that space */
efcaa95b 1951
7edfd0ef 1952 opts = space - pv;
89529cee 1953 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1954 STR_WITH_LEN("\\n "));
7edfd0ef 1955 }
efcaa95b 1956
396482e1 1957 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1958
6224f72b 1959#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1960 if (LOCAL_PATCH_COUNT > 0) {
1961 int i;
396482e1 1962 sv_catpvs(opts_prog,
7edfd0ef
NC
1963 "\" Locally applied patches:\\n\",");
1964 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1965 if (PL_localpatches[i])
1966 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1967 0, PL_localpatches[i], 0);
1968 }
6224f72b 1969 }
6224f72b 1970#endif
7edfd0ef
NC
1971 Perl_sv_catpvf(aTHX_ opts_prog,
1972 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1973#ifdef __DATE__
1974# ifdef __TIME__
7edfd0ef
NC
1975 Perl_sv_catpvf(aTHX_ opts_prog,
1976 ",\" Compiled at %s %s\\n\"",__DATE__,
1977 __TIME__);
6224f72b 1978# else
7edfd0ef
NC
1979 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1980 __DATE__);
6224f72b
GS
1981# endif
1982#endif
396482e1 1983 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1984 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1985 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1986#ifdef __CYGWIN__
396482e1 1987 sv_catpvs(opts_prog,
7edfd0ef 1988 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1989#endif
396482e1 1990 sv_catpvs(opts_prog,
7edfd0ef
NC
1991 "print \" \\%ENV:\\n @env\\n\" if @env;"
1992 "print \" \\@INC:\\n @INC\\n\";");
1993 }
1994 else {
1995 ++s;
1996 opts_prog = Perl_newSVpvf(aTHX_
1997 "Config::config_vars(qw%c%s%c)",
1998 0, s, 0);
1999 s += strlen(s);
2000 }
2001 av_push(PL_preambleav, opts_prog);
2002 /* don't look for script or read stdin */
2003 scriptname = BIT_BUCKET;
2004 goto reswitch;
6224f72b 2005 }
6224f72b 2006 case 'x':
3280af22 2007 PL_doextract = TRUE;
6224f72b
GS
2008 s++;
2009 if (*s)
f4c556ac 2010 cddir = s;
6224f72b
GS
2011 break;
2012 case 0:
2013 break;
2014 case '-':
2015 if (!*++s || isSPACE(*s)) {
2016 argc--,argv++;
2017 goto switch_end;
2018 }
2019 /* catch use of gnu style long options */
2020 if (strEQ(s, "version")) {
dd374669 2021 s = (char *)"v";
6224f72b
GS
2022 goto reswitch;
2023 }
2024 if (strEQ(s, "help")) {
dd374669 2025 s = (char *)"h";
6224f72b
GS
2026 goto reswitch;
2027 }
2028 s--;
2029 /* FALL THROUGH */
2030 default:
cea2e8a9 2031 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2032 }
2033 }
6224f72b 2034 switch_end:
54310121 2035
f675dbe5
CB
2036 if (
2037#ifndef SECURE_INTERNAL_GETENV
2038 !PL_tainting &&
2039#endif
cf756827 2040 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2041 {
e1ec3a88 2042 const char *popt = s;
74288ac8
GS
2043 while (isSPACE(*s))
2044 s++;
317ea90d 2045 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 2046 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 2047 PL_tainting = TRUE;
317ea90d
MS
2048 PL_taint_warn = FALSE;
2049 }
74288ac8 2050 else {
bd61b366 2051 char *popt_copy = NULL;
74288ac8 2052 while (s && *s) {
4ea8f8fb 2053 char *d;
74288ac8
GS
2054 while (isSPACE(*s))
2055 s++;
2056 if (*s == '-') {
2057 s++;
2058 if (isSPACE(*s))
2059 continue;
2060 }
4ea8f8fb 2061 d = s;
74288ac8
GS
2062 if (!*s)
2063 break;
e4af53b0 2064 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 2065 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2066 while (++s && *s) {
2067 if (isSPACE(*s)) {
cf756827
GS
2068 if (!popt_copy) {
2069 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
2070 s = popt_copy + (s - popt);
2071 d = popt_copy + (d - popt);
2072 }
4ea8f8fb
MS
2073 *s++ = '\0';
2074 break;
2075 }
2076 }
1c4db469 2077 if (*d == 't') {
317ea90d
MS
2078 if( !PL_tainting ) {
2079 PL_taint_warn = TRUE;
2080 PL_tainting = TRUE;
2081 }
1c4db469 2082 } else {
97bd5664 2083 moreswitches(d);
1c4db469 2084 }
6224f72b 2085 }
6224f72b
GS
2086 }
2087 }
a0d0e21e 2088
20ef40cf
GA
2089#ifdef USE_SITECUSTOMIZE
2090 if (!minus_f) {
29a861e7
NC
2091 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2092 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
20ef40cf
GA
2093 }
2094#endif
2095
6224f72b
GS
2096 if (!scriptname)
2097 scriptname = argv[0];
3280af22 2098 if (PL_e_script) {
6224f72b
GS
2099 argc++,argv--;
2100 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2101 }
bd61b366 2102 else if (scriptname == NULL) {
6224f72b
GS
2103#ifdef MSDOS
2104 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2105 moreswitches("h");
6224f72b
GS
2106#endif
2107 scriptname = "-";
2108 }
2109
b7975bdd
NC
2110 /* Set $^X early so that it can be used for relocatable paths in @INC */
2111 assert (!PL_tainted);
2112 TAINT;
2113 S_set_caret_X(aTHX);
2114 TAINT_NOT;
6224f72b
GS
2115 init_perllib();
2116
a52eba0e
NC
2117 {
2118 int suidscript;
2119 const int fdscript
2120 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2121
a52eba0e 2122 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2123
64ca3a65 2124#ifndef PERL_MICRO
a52eba0e
NC
2125# if defined(SIGCHLD) || defined(SIGCLD)
2126 {
2127# ifndef SIGCHLD
2128# define SIGCHLD SIGCLD
2129# endif
2130 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2131 if (sigstate == (Sighandler_t) SIG_IGN) {
2132 if (ckWARN(WARN_SIGNAL))
2133 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2134 "Can't ignore signal CHLD, forcing to default");
2135 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2136 }
0b5b802d 2137 }
a52eba0e 2138# endif
64ca3a65 2139#endif
0b5b802d 2140
a52eba0e 2141 if (PL_doextract
bf4acbe4 2142#ifdef MACOS_TRADITIONAL
a52eba0e 2143 || gMacPerl_AlwaysExtract
bf4acbe4 2144#endif
a52eba0e 2145 ) {
faef540c
NC
2146
2147 /* This will croak if suidscript is >= 0, as -x cannot be used with
2148 setuid scripts. */
2149 forbid_setid('x', suidscript);
2150 /* Hence you can't get here if suidscript >= 0 */
2151
2152 find_beginning();
a52eba0e
NC
2153 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2154 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2155 }
f4c556ac 2156 }
6224f72b 2157
b9f83d2f 2158 PL_main_cv = PL_compcv = (CV*)newSV_type(SVt_PVCV);
3280af22
NIS
2159 CvUNIQUE_on(PL_compcv);
2160
dd2155a4 2161 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2162
0c4f7ff0 2163 boot_core_PerlIO();
6224f72b 2164 boot_core_UNIVERSAL();
09bef843 2165 boot_core_xsutils();
e1a479c5 2166 boot_core_mro();
6224f72b
GS
2167
2168 if (xsinit)
acfe0abc 2169 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2170#ifndef PERL_MICRO
d0d72822 2171#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2172 init_os_extras();
6224f72b 2173#endif
64ca3a65 2174#endif
6224f72b 2175
29209bc5 2176#ifdef USE_SOCKS
1b9c9cf5
DH
2177# ifdef HAS_SOCKS5_INIT
2178 socks5_init(argv[0]);
2179# else
29209bc5 2180 SOCKSinit(argv[0]);
1b9c9cf5 2181# endif
ac27b0f5 2182#endif
29209bc5 2183
6224f72b
GS
2184 init_predump_symbols();
2185 /* init_postdump_symbols not currently designed to be called */
2186 /* more than once (ENV isn't cleared first, for example) */
2187 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2188 if (!PL_do_undump)
6224f72b
GS
2189 init_postdump_symbols(argc,argv,env);
2190
27da23d5
JH
2191 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2192 * or explicitly in some platforms.
085a54d9 2193 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2194 * look like the user wants to use UTF-8. */
a0fd4948 2195#if defined(__SYMBIAN32__)
27da23d5
JH
2196 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2197#endif
06e66572
JH
2198 if (PL_unicode) {
2199 /* Requires init_predump_symbols(). */
a05d7ebb 2200 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2201 IO* io;
2202 PerlIO* fp;
2203 SV* sv;
2204
a05d7ebb 2205 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2206 * and the default open disciplines. */
a05d7ebb
JH
2207 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2208 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2209 (fp = IoIFP(io)))
2210 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2211 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2212 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2213 (fp = IoOFP(io)))
2214 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2215 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2216 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2217 (fp = IoOFP(io)))
2218 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2219 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2220 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2221 SVt_PV)))) {
a05d7ebb
JH
2222 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2223 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2224 if (in) {
2225 if (out)
2226 sv_setpvn(sv, ":utf8\0:utf8", 11);
2227 else
2228 sv_setpvn(sv, ":utf8\0", 6);
2229 }
2230 else if (out)
2231 sv_setpvn(sv, "\0:utf8", 6);
2232 SvSETMAGIC(sv);
2233 }
b310b053
JH
2234 }
2235 }
2236
4ffa73a3
JH
2237 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2238 if (strEQ(s, "unsafe"))
2239 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2240 else if (strEQ(s, "safe"))
2241 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2242 else
2243 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2244 }
2245
81d86705
NC
2246#ifdef PERL_MAD
2247 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2248 PL_madskills = 1;
2249 PL_minus_c = 1;
2250 if (!s || !s[0])
2251 PL_xmlfp = PerlIO_stdout();
2252 else {
2253 PL_xmlfp = PerlIO_open(s, "w");
2254 if (!PL_xmlfp)
2255 Perl_croak(aTHX_ "Can't open %s", s);
2256 }
2257 my_setenv("PERL_XMLDUMP", Nullch); /* hide from subprocs */
2258 }
2259 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2260 PL_madskills = atoi(s);
2261 my_setenv("PERL_MADSKILLS", Nullch); /* hide from subprocs */
2262 }
2263#endif
2264
6224f72b
GS
2265 init_lexer();
2266
2267 /* now parse the script */
2268
93189314 2269 SETERRNO(0,SS_NORMAL);
3280af22 2270 PL_error_count = 0;
bf4acbe4
GS
2271#ifdef MACOS_TRADITIONAL
2272 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2273 if (PL_minus_c)
2274 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2275 else {
2276 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2277 MacPerl_MPWFileName(PL_origfilename));
2278 }
2279 }
2280#else
3280af22
NIS
2281 if (yyparse() || PL_error_count) {
2282 if (PL_minus_c)
cea2e8a9 2283 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2284 else {
cea2e8a9 2285 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2286 PL_origfilename);
6224f72b
GS
2287 }
2288 }
bf4acbe4 2289#endif
57843af0 2290 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2291 PL_curstash = PL_defstash;
2292 PL_preprocess = FALSE;
2293 if (PL_e_script) {
2294 SvREFCNT_dec(PL_e_script);
a0714e2c 2295 PL_e_script = NULL;
6224f72b
GS
2296 }
2297
3280af22 2298 if (PL_do_undump)
6224f72b
GS
2299 my_unexec();
2300
57843af0
GS
2301 if (isWARN_ONCE) {
2302 SAVECOPFILE(PL_curcop);
2303 SAVECOPLINE(PL_curcop);
3280af22 2304 gv_check(PL_defstash);
57843af0 2305 }
6224f72b
GS
2306
2307 LEAVE;
2308 FREETMPS;
2309
2310#ifdef MYMALLOC
2311 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2312 dump_mstats("after compilation:");
2313#endif
2314
2315 ENTER;
3280af22 2316 PL_restartop = 0;
312caa8e 2317 return NULL;
6224f72b
GS
2318}
2319
954c1994
GS
2320/*
2321=for apidoc perl_run
2322
2323Tells a Perl interpreter to run. See L<perlembed>.
2324
2325=cut
2326*/
2327
6224f72b 2328int
0cb96387 2329perl_run(pTHXx)
6224f72b 2330{
97aff369 2331 dVAR;
6224f72b 2332 I32 oldscope;
14dd3ad8 2333 int ret = 0;
db36c5a1 2334 dJMPENV;
6224f72b 2335
ed6c66dd 2336 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 2337
3280af22 2338 oldscope = PL_scopestack_ix;
96e176bf
CL
2339#ifdef VMS
2340 VMSISH_HUSHED = 0;
2341#endif
6224f72b 2342
14dd3ad8 2343 JMPENV_PUSH(ret);
6224f72b
GS
2344 switch (ret) {
2345 case 1:
2346 cxstack_ix = -1; /* start context stack again */
312caa8e 2347 goto redo_body;
14dd3ad8 2348 case 0: /* normal completion */
14dd3ad8
GS
2349 redo_body:
2350 run_body(oldscope);
14dd3ad8
GS
2351 /* FALL THROUGH */
2352 case 2: /* my_exit() */
3280af22 2353 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2354 LEAVE;
2355 FREETMPS;
3280af22 2356 PL_curstash = PL_defstash;
3a1ee7e8 2357 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2358 PL_endav && !PL_minus_c)
2359 call_list(oldscope, PL_endav);
6224f72b
GS
2360#ifdef MYMALLOC
2361 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2362 dump_mstats("after execution: ");
2363#endif
37038d91 2364 ret = STATUS_EXIT;
14dd3ad8 2365 break;
6224f72b 2366 case 3:
312caa8e
CS
2367 if (PL_restartop) {
2368 POPSTACK_TO(PL_mainstack);
2369 goto redo_body;
6224f72b 2370 }
bf49b057 2371 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2372 FREETMPS;
14dd3ad8
GS
2373 ret = 1;
2374 break;
6224f72b
GS
2375 }
2376
14dd3ad8
GS
2377 JMPENV_POP;
2378 return ret;
312caa8e
CS
2379}
2380
dd374669 2381STATIC void
14dd3ad8
GS
2382S_run_body(pTHX_ I32 oldscope)
2383{
97aff369 2384 dVAR;
6224f72b 2385 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2386 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2387
3280af22 2388 if (!PL_restartop) {
81d86705
NC
2389#ifdef PERL_MAD
2390 if (PL_xmlfp) {
2391 xmldump_all();
2392 exit(0); /* less likely to core dump than my_exit(0) */
2393 }
2394#endif
6224f72b 2395 DEBUG_x(dump_all());
cf2782cd 2396#ifdef DEBUGGING
ecae49c0
NC
2397 if (!DEBUG_q_TEST)
2398 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2399#endif
b900a521
JH
2400 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2401 PTR2UV(thr)));
6224f72b 2402
3280af22 2403 if (PL_minus_c) {
bf4acbe4 2404#ifdef MACOS_TRADITIONAL
e69a2255
JH
2405 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2406 (gMacPerl_ErrorFormat ? "# " : ""),
2407 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2408#else
bf49b057 2409 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2410#endif
6224f72b
GS
2411 my_exit(0);
2412 }
3280af22 2413 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2414 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2415 if (PL_initav)
2416 call_list(oldscope, PL_initav);
f1fac472
NC
2417#ifdef PERL_DEBUG_READONLY_OPS
2418 Perl_pending_Slabs_to_ro(aTHX);
2419#endif
6224f72b
GS
2420 }
2421
2422 /* do it */
2423
3280af22 2424 if (PL_restartop) {
533c011a 2425 PL_op = PL_restartop;
3280af22 2426 PL_restartop = 0;
cea2e8a9 2427 CALLRUNOPS(aTHX);
6224f72b 2428 }
3280af22
NIS
2429 else if (PL_main_start) {
2430 CvDEPTH(PL_main_cv) = 1;
533c011a 2431 PL_op = PL_main_start;
cea2e8a9 2432 CALLRUNOPS(aTHX);
6224f72b 2433 }
f6b3007c
JH
2434 my_exit(0);
2435 /* NOTREACHED */
6224f72b
GS
2436}
2437
954c1994 2438/*
ccfc67b7
JH
2439=head1 SV Manipulation Functions
2440
954c1994
GS
2441=for apidoc p||get_sv
2442
2443Returns the SV of the specified Perl scalar. If C<create> is set and the
2444Perl variable does not exist then it will be created. If C<create> is not
2445set and the variable does not exist then NULL is returned.
2446
2447=cut
2448*/
2449
6224f72b 2450SV*
864dbfa3 2451Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2452{
2453 GV *gv;
6224f72b
GS
2454 gv = gv_fetchpv(name, create, SVt_PV);
2455 if (gv)
2456 return GvSV(gv);
a0714e2c 2457 return NULL;
6224f72b
GS
2458}
2459
954c1994 2460/*
ccfc67b7
JH
2461=head1 Array Manipulation Functions
2462
954c1994
GS
2463=for apidoc p||get_av
2464
2465Returns the AV of the specified Perl array. If C<create> is set and the
2466Perl variable does not exist then it will be created. If C<create> is not
2467set and the variable does not exist then NULL is returned.
2468
2469=cut
2470*/
2471
6224f72b 2472AV*
864dbfa3 2473Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2474{
c4420975 2475 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2476 if (create)
2477 return GvAVn(gv);
2478 if (gv)
2479 return GvAV(gv);
7d49f689 2480 return NULL;
6224f72b
GS
2481}
2482
954c1994 2483/*
ccfc67b7
JH
2484=head1 Hash Manipulation Functions
2485
954c1994
GS
2486=for apidoc p||get_hv
2487
2488Returns the HV of the specified Perl hash. If C<create> is set and the
2489Perl variable does not exist then it will be created. If C<create> is not
2490set and the variable does not exist then NULL is returned.
2491
2492=cut
2493*/
2494
6224f72b 2495HV*
864dbfa3 2496Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2497{
890ce7af 2498 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2499 if (create)
2500 return GvHVn(gv);
2501 if (gv)
2502 return GvHV(gv);
5c284bb0 2503 return NULL;
a0d0e21e
LW
2504}
2505
954c1994 2506/*
ccfc67b7
JH
2507=head1 CV Manipulation Functions
2508
780a5241
NC
2509=for apidoc p||get_cvn_flags
2510
2511Returns the CV of the specified Perl subroutine. C<flags> are passed to
2512C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2513exist then it will be declared (which has the same effect as saying
2514C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2515then NULL is returned.
2516
954c1994
GS
2517=for apidoc p||get_cv
2518
780a5241 2519Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2520
2521=cut
2522*/
2523
a0d0e21e 2524CV*
780a5241 2525Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2526{
780a5241 2527 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2528 /* XXX this is probably not what they think they're getting.
2529 * It has the same effect as "sub name;", i.e. just a forward
2530 * declaration! */
780a5241
NC
2531 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2532 SV *const sv = newSVpvn(name,len);
2533 SvFLAGS(sv) |= flags & SVf_UTF8;
774d564b 2534 return newSUB(start_subparse(FALSE, 0),
780a5241 2535 newSVOP(OP_CONST, 0, sv),
5f66b61c 2536 NULL, NULL);
780a5241 2537 }
a0d0e21e 2538 if (gv)
8ebc5c01 2539 return GvCVu(gv);
601f1833 2540 return NULL;
a0d0e21e
LW
2541}
2542
780a5241
NC
2543CV*
2544Perl_get_cv(pTHX_ const char *name, I32 flags)
2545{
2546 return get_cvn_flags(name, strlen(name), flags);
2547}
2548
79072805
LW
2549/* Be sure to refetch the stack pointer after calling these routines. */
2550
954c1994 2551/*
ccfc67b7
JH
2552
2553=head1 Callback Functions
2554
954c1994
GS
2555=for apidoc p||call_argv
2556
2557Performs a callback to the specified Perl sub. See L<perlcall>.
2558
2559=cut
2560*/
2561
a0d0e21e 2562I32
8f42b153 2563Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2564
8ac85365
NIS
2565 /* See G_* flags in cop.h */
2566 /* null terminated arg list */
8990e307 2567{
97aff369 2568 dVAR;
a0d0e21e 2569 dSP;
8990e307 2570
924508f0 2571 PUSHMARK(SP);
a0d0e21e 2572 if (argv) {
8990e307 2573 while (*argv) {
a0d0e21e 2574 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2575 argv++;
2576 }
a0d0e21e 2577 PUTBACK;
8990e307 2578 }
864dbfa3 2579 return call_pv(sub_name, flags);
8990e307
LW
2580}
2581
954c1994
GS
2582/*
2583=for apidoc p||call_pv
2584
2585Performs a callback to the specified Perl sub. See L<perlcall>.
2586
2587=cut
2588*/
2589
a0d0e21e 2590I32
864dbfa3 2591Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2592 /* name of the subroutine */
2593 /* See G_* flags in cop.h */
a0d0e21e 2594{
864dbfa3 2595 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2596}
2597
954c1994
GS
2598/*
2599=for apidoc p||call_method
2600
2601Performs a callback to the specified Perl method. The blessed object must
2602be on the stack. See L<perlcall>.
2603
2604=cut
2605*/
2606
a0d0e21e 2607I32
864dbfa3 2608Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2609 /* name of the subroutine */
2610 /* See G_* flags in cop.h */
a0d0e21e 2611{
968b3946 2612 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2613}
2614
2615/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2616/*
2617=for apidoc p||call_sv
2618
2619Performs a callback to the Perl sub whose name is in the SV. See
2620L<perlcall>.
2621
2622=cut
2623*/
2624
a0d0e21e 2625I32
864dbfa3 2626Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2627 /* See G_* flags in cop.h */
a0d0e21e 2628{
27da23d5 2629 dVAR; dSP;
a0d0e21e 2630 LOGOP myop; /* fake syntax tree node */
968b3946 2631 UNOP method_op;
aa689395 2632 I32 oldmark;
8ea43dc8 2633 VOL I32 retval = 0;
a0d0e21e 2634 I32 oldscope;
54310121 2635 bool oldcatch = CATCH_GET;
6224f72b 2636 int ret;
c4420975 2637 OP* const oldop = PL_op;
db36c5a1 2638 dJMPENV;
1e422769 2639
a0d0e21e
LW
2640 if (flags & G_DISCARD) {
2641 ENTER;
2642 SAVETMPS;
2643 }
2644
aa689395 2645 Zero(&myop, 1, LOGOP);
5f66b61c 2646 myop.op_next = NULL;
f51d4af5 2647 if (!(flags & G_NOARGS))
aa689395 2648 myop.op_flags |= OPf_STACKED;
54310121
PP
2649 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2650 (flags & G_ARRAY) ? OPf_WANT_LIST :
2651 OPf_WANT_SCALAR);
462e5cf6 2652 SAVEOP();
533c011a 2653 PL_op = (OP*)&myop;
aa689395 2654
3280af22
NIS
2655 EXTEND(PL_stack_sp, 1);
2656 *++PL_stack_sp = sv;
aa689395 2657 oldmark = TOPMARK;
3280af22 2658 oldscope = PL_scopestack_ix;
a0d0e21e 2659
3280af22 2660 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2661 /* Handle first BEGIN of -d. */
3280af22 2662 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2663 /* Try harder, since this may have been a sighandler, thus
2664 * curstash may be meaningless. */
3280af22 2665 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2666 && !(flags & G_NODEBUG))
533c011a 2667 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2668
968b3946
GS
2669 if (flags & G_METHOD) {
2670 Zero(&method_op, 1, UNOP);
2671 method_op.op_next = PL_op;
2672 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2673 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2674 PL_op = (OP*)&method_op;
968b3946
GS
2675 }
2676
312caa8e 2677 if (!(flags & G_EVAL)) {
0cdb2077 2678 CATCH_SET(TRUE);
d6f07c05 2679 CALL_BODY_SUB((OP*)&myop);
312caa8e 2680 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2681 CATCH_SET(oldcatch);
312caa8e
CS
2682 }
2683 else {
d78bda3d 2684 myop.op_other = (OP*)&myop;
3280af22 2685 PL_markstack_ptr--;
edb2152a 2686 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2687 PL_markstack_ptr++;
a0d0e21e 2688
14dd3ad8 2689 JMPENV_PUSH(ret);
edb2152a 2690
6224f72b
GS
2691 switch (ret) {
2692 case 0:
14dd3ad8 2693 redo_body:
d6f07c05 2694 CALL_BODY_SUB((OP*)&myop);
312caa8e
CS
2695 retval = PL_stack_sp - (PL_stack_base + oldmark);
2696 if (!(flags & G_KEEPERR))
c69006e4 2697 sv_setpvn(ERRSV,"",0);
a0d0e21e 2698 break;
6224f72b 2699 case 1:
f86702cc 2700 STATUS_ALL_FAILURE;
a0d0e21e 2701 /* FALL THROUGH */
6224f72b 2702 case 2:
a0d0e21e 2703 /* my_exit() was called */
3280af22 2704 PL_curstash = PL_defstash;
a0d0e21e 2705 FREETMPS;
14dd3ad8 2706 JMPENV_POP;
cc3604b1 2707 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2708 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2709 my_exit_jump();
a0d0e21e 2710 /* NOTREACHED */
6224f72b 2711 case 3:
3280af22 2712 if (PL_restartop) {
533c011a 2713 PL_op = PL_restartop;
3280af22 2714 PL_restartop = 0;
312caa8e 2715 goto redo_body;
a0d0e21e 2716 }
3280af22 2717 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2718 if (flags & G_ARRAY)
2719 retval = 0;
2720 else {
2721 retval = 1;
3280af22 2722 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2723 }
312caa8e 2724 break;
a0d0e21e 2725 }
a0d0e21e 2726
edb2152a
NC
2727 if (PL_scopestack_ix > oldscope)
2728 delete_eval_scope();
14dd3ad8 2729 JMPENV_POP;
a0d0e21e 2730 }
1e422769 2731
a0d0e21e 2732 if (flags & G_DISCARD) {
3280af22 2733 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2734 retval = 0;
2735 FREETMPS;
2736 LEAVE;
2737 }
533c011a 2738 PL_op = oldop;
a0d0e21e
LW
2739 return retval;
2740}
2741
6e72f9df 2742/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2743
954c1994
GS
2744/*
2745=for apidoc p||eval_sv
2746
2747Tells Perl to C<eval> the string in the SV.
2748
2749=cut
2750*/
2751
a0d0e21e 2752I32
864dbfa3 2753Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2754
8ac85365 2755 /* See G_* flags in cop.h */
a0d0e21e 2756{
97aff369 2757 dVAR;
924508f0 2758 dSP;
a0d0e21e 2759 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2760 VOL I32 oldmark = SP - PL_stack_base;
2761 VOL I32 retval = 0;
6224f72b 2762 int ret;
c4420975 2763 OP* const oldop = PL_op;
db36c5a1 2764 dJMPENV;
84902520 2765
4633a7c4
LW
2766 if (flags & G_DISCARD) {
2767 ENTER;
2768 SAVETMPS;
2769 }
2770
462e5cf6 2771 SAVEOP();
533c011a
NIS
2772 PL_op = (OP*)&myop;
2773 Zero(PL_op, 1, UNOP);
3280af22
NIS
2774 EXTEND(PL_stack_sp, 1);
2775 *++PL_stack_sp = sv;
79072805 2776
4633a7c4
LW
2777 if (!(flags & G_NOARGS))
2778 myop.op_flags = OPf_STACKED;
5f66b61c 2779 myop.op_next = NULL;
6e72f9df 2780 myop.op_type = OP_ENTEREVAL;
54310121
PP
2781 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2782 (flags & G_ARRAY) ? OPf_WANT_LIST :
2783 OPf_WANT_SCALAR);
6e72f9df
PP
2784 if (flags & G_KEEPERR)
2785 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2786
dedbcade
DM
2787 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2788 * before a PUSHEVAL, which corrupts the stack after a croak */
2789 TAINT_PROPER("eval_sv()");
2790
14dd3ad8 2791 JMPENV_PUSH(ret);
6224f72b
GS
2792 switch (ret) {
2793 case 0:
14dd3ad8 2794 redo_body:
d6f07c05 2795 CALL_BODY_EVAL((OP*)&myop);
312caa8e
CS
2796 retval = PL_stack_sp - (PL_stack_base + oldmark);
2797 if (!(flags & G_KEEPERR))
c69006e4 2798 sv_setpvn(ERRSV,"",0);
4633a7c4 2799 break;
6224f72b 2800 case 1:
f86702cc 2801 STATUS_ALL_FAILURE;
4633a7c4 2802 /* FALL THROUGH */
6224f72b 2803 case 2:
4633a7c4 2804 /* my_exit() was called */
3280af22 2805 PL_curstash = PL_defstash;
4633a7c4 2806 FREETMPS;
14dd3ad8 2807 JMPENV_POP;
cc3604b1 2808 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2809 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2810 my_exit_jump();
4633a7c4 2811 /* NOTREACHED */
6224f72b 2812 case 3:
3280af22 2813 if (PL_restartop) {
533c011a 2814 PL_op = PL_restartop;
3280af22 2815 PL_restartop = 0;
312caa8e 2816 goto redo_body;
4633a7c4 2817 }
3280af22 2818 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2819 if (flags & G_ARRAY)
2820 retval = 0;
2821 else {
2822 retval = 1;
3280af22 2823 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2824 }
312caa8e 2825 break;
4633a7c4
LW
2826 }
2827
14dd3ad8 2828 JMPENV_POP;
4633a7c4 2829 if (flags & G_DISCARD) {
3280af22 2830 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2831 retval = 0;
2832 FREETMPS;
2833 LEAVE;
2834 }
533c011a 2835 PL_op = oldop;
4633a7c4
LW
2836 return retval;
2837}
2838
954c1994
GS
2839/*
2840=for apidoc p||eval_pv
2841
2842Tells Perl to C<eval> the given string and return an SV* result.
2843
2844=cut
2845*/
2846
137443ea 2847SV*
864dbfa3 2848Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2849{
97aff369 2850 dVAR;
137443ea
PP
2851 dSP;
2852 SV* sv = newSVpv(p, 0);
2853
864dbfa3 2854 eval_sv(sv, G_SCALAR);
137443ea
PP
2855 SvREFCNT_dec(sv);
2856
2857 SPAGAIN;
2858 sv = POPs;
2859 PUTBACK;
2860
2d8e6c8d 2861 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2862 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2863 }
137443ea
PP
2864
2865 return sv;
2866}
2867
4633a7c4
LW
2868/* Require a module. */
2869
954c1994 2870/*
ccfc67b7
JH
2871=head1 Embedding Functions
2872
954c1994
GS
2873=for apidoc p||require_pv
2874
7d3fb230
BS
2875Tells Perl to C<require> the file named by the string argument. It is
2876analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2877implemented that way; consider using load_module instead.
954c1994 2878
7d3fb230 2879=cut */
954c1994 2880
4633a7c4 2881void
864dbfa3 2882Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2883{
97aff369 2884 dVAR;
d3acc0f7 2885 dSP;
97aff369 2886 SV* sv;
e788e7d3 2887 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2888 PUTBACK;
be41e5d9
NC
2889 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2890 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2891 SPAGAIN;
2892 POPSTACK;
79072805
LW
2893}
2894
79072805 2895void
e1ec3a88 2896Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2897{
71315bf2 2898 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2899
c4420975 2900 if (gv)
14befaf4 2901 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2902}
2903
76e3520e 2904STATIC void
e1ec3a88 2905S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2906{
ab821d7f 2907 /* This message really ought to be max 23 lines.
75c72d73 2908 * Removed -h because the user already knows that option. Others? */
fb73857a 2909
27da23d5 2910 static const char * const usage_msg[] = {
aefc56c5
SF
2911"-0[octal] specify record separator (\\0, if no argument)",
2912"-A[mod][=pattern] activate all/given assertions",
2913"-a autosplit mode with -n or -p (splits $_ into @F)",
2914"-C[number/list] enables the listed Unicode features",
2915"-c check syntax only (runs BEGIN and CHECK blocks)",
2916"-d[:debugger] run program under debugger",
2917"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2918"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2919"-E program like -e, but enables all optional features",
aefc56c5 2920"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2921"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2922"-i[extension] edit <> files in place (makes backup if extension supplied)",
2923"-Idirectory specify @INC/#include directory (several -I's allowed)",
2924"-l[octal] enable line ending processing, specifies line terminator",
2925"-[mM][-]module execute \"use/no module...\" before executing program",
2926"-n assume \"while (<>) { ... }\" loop around program",
2927"-p assume loop like -n but print line also, like sed",
2928"-P run program through C preprocessor before compilation",
2929"-s enable rudimentary parsing for switches after programfile",
2930"-S look for programfile using PATH environment variable",
2931"-t enable tainting warnings",
2932"-T enable tainting checks",
2933"-u dump core after parsing program",
2934"-U allow unsafe operations",
2935"-v print version, subversion (includes VERY IMPORTANT perl info)",
2936"-V[:variable] print configuration summary (or a single Config.pm variable)",
2937"-w enable many useful warnings (RECOMMENDED)",
2938"-W enable all warnings",
2939"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2940"-X disable all warnings",
fb73857a
PP
2941"\n",
2942NULL
2943};
27da23d5 2944 const char * const *p = usage_msg;
fb73857a 2945
b0e47665
GS
2946 PerlIO_printf(PerlIO_stdout(),
2947 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2948 name);
fb73857a 2949 while (*p)
b0e47665 2950 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2951}
2952
b4ab917c
DM
2953/* convert a string of -D options (or digits) into an int.
2954 * sets *s to point to the char after the options */
2955
2956#ifdef DEBUGGING
2957int
e1ec3a88 2958Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2959{
27da23d5 2960 static const char * const usage_msgd[] = {
e6e64d9b
JC
2961 " Debugging flag values: (see also -d)",
2962 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2963 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2964 " l Context (loop) stack processing",
2965 " t Trace execution",
2966 " o Method and overloading resolution",
2967 " c String/numeric conversions",
2968 " P Print profiling info, preprocessor command for -P, source file input state",
2969 " m Memory allocation",
2970 " f Format processing",
2971 " r Regular expression parsing and execution",
2972 " x Syntax tree dump",
3679267a 2973 " u Tainting checks",
e6e64d9b
JC
2974 " H Hash dump -- usurps values()",
2975 " X Scratchpad allocation",
2976 " D Cleaning up",
2977 " S Thread synchronization",
2978 " T Tokenising",
2979 " R Include reference counts of dumped variables (eg when using -Ds)",
2980 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2981 " v Verbose: use in conjunction with other flags",
2982 " C Copy On Write",
2983 " A Consistency checks on internal structures",
3679267a 2984 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2985 NULL
2986 };
b4ab917c
DM
2987 int i = 0;
2988 if (isALPHA(**s)) {
2989 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2990 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2991
2992 for (; isALNUM(**s); (*s)++) {
c4420975 2993 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2994 if (d)
2995 i |= 1 << (d - debopts);
2996 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2997 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2998 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2999 }
3000 }
e6e64d9b 3001 else if (isDIGIT(**s)) {
b4ab917c
DM
3002 i = atoi(*s);
3003 for (; isALNUM(**s); (*s)++) ;
3004 }
ddcf8bc1 3005 else if (givehelp) {
06e869a4 3006 const char *const *p = usage_msgd;
e6e64d9b
JC
3007 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
3008 }
b4ab917c
DM
3009# ifdef EBCDIC
3010 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3011 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3012 "-Dp not implemented on this platform\n");
3013# endif
3014 return i;
3015}
3016#endif
3017
79072805
LW
3018/* This routine handles any switches that can be given during run */
3019
3020char *
97bd5664 3021Perl_moreswitches(pTHX_ char *s)
79072805 3022{
27da23d5 3023 dVAR;
84c133a0 3024 UV rschar;
79072805
LW
3025
3026 switch (*s) {
3027 case '0':
a863c7d1 3028 {
f2095865 3029 I32 flags = 0;
a3b680e6 3030 STRLEN numlen;
f2095865
JH
3031
3032 SvREFCNT_dec(PL_rs);
3033 if (s[1] == 'x' && s[2]) {
a3b680e6 3034 const char *e = s+=2;
f2095865
JH
3035 U8 *tmps;
3036
a3b680e6
AL
3037 while (*e)
3038 e++;
f2095865
JH
3039 numlen = e - s;
3040 flags = PERL_SCAN_SILENT_ILLDIGIT;
3041 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3042 if (s + numlen < e) {
3043 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3044 numlen = 0;
3045 s--;
3046 }
396482e1 3047 PL_rs = newSVpvs("");
c5661c80 3048 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3049 tmps = (U8*)SvPVX(PL_rs);
3050 uvchr_to_utf8(tmps, rschar);
3051 SvCUR_set(PL_rs, UNISKIP(rschar));
3052 SvUTF8_on(PL_rs);
3053 }
3054 else {
3055 numlen = 4;
3056 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3057 if (rschar & ~((U8)~0))
3058 PL_rs = &PL_sv_undef;
3059 else if (!rschar && numlen >= 2)
396482e1 3060 PL_rs = newSVpvs("");
f2095865
JH
3061 else {
3062 char ch = (char)rschar;
3063 PL_rs = newSVpvn(&ch, 1);
3064 }
3065 }
800633c3 3066 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3067 return s + numlen;
a863c7d1 3068 }
46487f74 3069 case 'C':
a05d7ebb 3070 s++;
dd374669 3071 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3072 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3073 PL_utf8cache = -1;
46487f74 3074 return s;
2304df62 3075 case 'F':
3280af22 3076 PL_minus_F = TRUE;
ebce5377
RGS
3077 PL_splitstr = ++s;
3078 while (*s && !isSPACE(*s)) ++s;
e49e380e 3079 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3080 return s;
79072805 3081 case 'a':
3280af22 3082 PL_minus_a = TRUE;
79072805
LW
3083 s++;
3084 return s;
3085 case 'c':
3280af22 3086 PL_minus_c = TRUE;
79072805
LW
3087 s++;
3088 return s;
3089 case 'd':
97bd5664 3090 forbid_setid('d', -1);
4633a7c4 3091 s++;
2cbb2ee1
RGS
3092
3093 /* -dt indicates to the debugger that threads will be used */
3094 if (*s == 't' && !isALNUM(s[1])) {
3095 ++s;
3096 my_setenv("PERL5DB_THREADED", "1");
3097 }
3098
70c94a19
RR
3099 /* The following permits -d:Mod to accepts arguments following an =
3100 in the fashion that -MSome::Mod does. */
3101 if (*s == ':' || *s == '=') {
06b5626a 3102 const char *start;
396482e1 3103 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3104 start = ++s;
3105 /* We now allow -d:Module=Foo,Bar */
3106 while(isALNUM(*s) || *s==':') ++s;
3107 if (*s != '=')
3108 sv_catpv(sv, start);
3109 else {
3110 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3111 /* Don't use NUL as q// delimiter here, this string goes in the
3112 * environment. */
3113 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3114 }
4633a7c4 3115 s += strlen(s);
184f32ec 3116 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3117 }
ed094faf 3118 if (!PL_perldb) {
3280af22 3119 PL_perldb = PERLDB_ALL;
a0d0e21e 3120 init_debugger();
ed094faf 3121 }
79072805
LW
3122 return s;
3123 case 'D':
0453d815 3124 {
79072805 3125#ifdef DEBUGGING
97bd5664 3126 forbid_setid('D', -1);
b4ab917c 3127 s++;
dd374669 3128 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3129#else /* !DEBUGGING */
0453d815 3130 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3131 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3132 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3133 for (s++; isALNUM(*s); s++) ;
79072805 3134#endif
79072805 3135 return s;
0453d815 3136 }
4633a7c4 3137 case 'h':
ac27b0f5 3138 usage(PL_origargv[0]);
7ca617d0 3139 my_exit(0);
79072805 3140 case 'i':
43c5f42d 3141 Safefree(PL_inplace);
c030f24b
GH
3142#if defined(__CYGWIN__) /* do backup extension automagically */
3143 if (*(s+1) == '\0') {
c86a4f2e 3144 PL_inplace = savepvs(".bak");
c030f24b
GH
3145 return s+1;
3146 }
3147#endif /* __CYGWIN__ */
5ef5d758 3148 {
d4c19fe8 3149 const char * const start = ++s;
5ef5d758
NC
3150 while (*s && !isSPACE(*s))
3151 ++s;
3152
3153 PL_inplace = savepvn(start, s - start);
3154 }
7b8d334a 3155 if (*s) {
5ef5d758 3156 ++s;
7b8d334a 3157 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3158 s++;
7b8d334a 3159 }
fb73857a 3160 return s;
4e49a025 3161 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3162 forbid_setid('I', -1);
fb73857a
PP
3163 ++s;
3164 while (*s && isSPACE(*s))
3165 ++s;
3166 if (*s) {
774d564b 3167 char *e, *p;
0df16ed7
GS
3168 p = s;
3169 /* ignore trailing spaces (possibly followed by other switches) */
3170 do {
3171 for (e = p; *e && !isSPACE(*e); e++) ;
3172 p = e;
3173 while (isSPACE(*p))
3174 p++;
3175 } while (*p && *p != '-');
3176 e = savepvn(s, e-s);
88fe16b2 3177 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3178 Safefree(e);
3179 s = p;
3180 if (*s == '-')
3181 s++;
79072805
LW
3182 }
3183 else
a67e862a 3184 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3185 return s;
79072805 3186 case 'l':
3280af22 3187 PL_minus_l = TRUE;
79072805 3188 s++;
7889fe52
NIS
3189 if (PL_ors_sv) {
3190 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3191 PL_ors_sv = NULL;
7889fe52 3192 }
79072805 3193 if (isDIGIT(*s)) {
53305cf1 3194 I32 flags = 0;
a3b680e6 3195 STRLEN numlen;
396482e1 3196 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3197 numlen = 3 + (*s == '0');
3198 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3199 s += numlen;
3200 }
3201 else {
8bfdd7d9 3202 if (RsPARA(PL_rs)) {
396482e1 3203 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3204 }
3205 else {
8bfdd7d9 3206 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3207 }
79072805
LW
3208 }
3209 return s;
06492da6 3210 case 'A':
97bd5664 3211 forbid_setid('A', -1);
aefc56c5
SF
3212 s++;
3213 {
44f8325f 3214 char * const start = s;
396482e1 3215 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3216 while(isALNUM(*s) || *s == ':') ++s;
3217 if (s != start) {
396482e1 3218 sv_catpvs(sv, "::");
aefc56c5
SF
3219 sv_catpvn(sv, start, s-start);
3220 }
3221 if (*s == '=') {
0c5a913d 3222 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3223 s+=strlen(s);
3224 }
3225 else if (*s != '\0') {
551405c4 3226 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3227 }
29a861e7 3228 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
aefc56c5 3229 return s;
06492da6 3230 }
1a30305b 3231 case 'M':
97bd5664 3232 forbid_setid('M', -1); /* XXX ? */
1a30305b
PP
3233 /* FALL THROUGH */
3234 case 'm':
97bd5664 3235 forbid_setid('m', -1); /* XXX ? */
1a30305b 3236 if (*++s) {
a5f75d66 3237 char *start;
11343788 3238 SV *sv;
e1ec3a88 3239 const char *use = "use ";
a5f75d66 3240 /* -M-foo == 'no foo' */
d0043bd1
NC
3241 /* Leading space on " no " is deliberate, to make both
3242 possibilities the same length. */
3243 if (*s == '-') { use = " no "; ++s; }
3244 sv = newSVpvn(use,4);
a5f75d66 3245 start = s;
1a30305b 3246 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3247 while(isALNUM(*s) || *s==':') ++s;
3248 if (*s != '=') {
11343788 3249 sv_catpv(sv, start);
c07a80fd
PP
3250 if (*(start-1) == 'm') {
3251 if (*s != '\0')
cea2e8a9 3252 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3253 sv_catpvs( sv, " ()");
c07a80fd
PP
3254 }
3255 } else {
6df41af2 3256 if (s == start)
be98fb35
GS
3257 Perl_croak(aTHX_ "Module name required with -%c option",
3258 s[-1]);
11343788 3259 sv_catpvn(sv, start, s-start);
396482e1
GA
3260 sv_catpvs(sv, " split(/,/,q");
3261 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3262 sv_catpv(sv, ++s);
396482e1 3263 sv_catpvs(sv, "\0)");
c07a80fd 3264 }
1a30305b 3265 s += strlen(s);
29a861e7 3266 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3267 }
3268 else
9e81e6a1 3269 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3270 return s;
79072805 3271 case 'n':
3280af22 3272 PL_minus_n = TRUE;
79072805
LW
3273 s++;
3274 return s;
3275 case 'p':
3280af22 3276 PL_minus_p = TRUE;
79072805
LW
3277 s++;
3278 return s;
3279 case 's':
97bd5664 3280 forbid_setid('s', -1);
3280af22 3281 PL_doswitches = TRUE;
79072805
LW
3282 s++;
3283 return s;
6537fe72
MS
3284 case 't':
3285 if (!PL_tainting)
22f7c9c9 3286 TOO_LATE_FOR('t');
6537fe72
MS
3287 s++;
3288 return s;
463ee0b2 3289 case 'T':
3280af22 3290 if (!PL_tainting)
22f7c9c9 3291 TOO_LATE_FOR('T');
463ee0b2
LW
3292 s++;
3293 return s;
79072805 3294 case 'u':
bf4acbe4
GS
3295#ifdef MACOS_TRADITIONAL
3296 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3297#endif
3280af22 3298 PL_do_undump = TRUE;
79072805
LW
3299 s++;
3300 return s;
3301 case 'U':
3280af22 3302 PL_unsafe = TRUE;
79072805
LW
3303 s++;
3304 return s;
3305 case 'v':
d7aa5382 3306 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3307 upg_version(PL_patchlevel, TRUE);
8e9464f1 3308#if !defined(DGUX)
b0e47665 3309 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3310 Perl_form(aTHX_ "\nThis is perl, %"SVf
3311#ifdef PERL_PATCHNUM
3312 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3313#endif
3314 " built for %s",
be2597df 3315 SVfARG(vstringify(PL_patchlevel)),
95b63a38 3316 ARCHNAME));
8e9464f1
JH
3317#else /* DGUX */
3318/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3319 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3320 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3321 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3322 PerlIO_printf(PerlIO_stdout(),
3323 Perl_form(aTHX_ " built under %s at %s %s\n",
3324 OSNAME, __DATE__, __TIME__));
3325 PerlIO_printf(PerlIO_stdout(),
3326 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3327 OSVERS));
8e9464f1
JH
3328#endif /* !DGUX */
3329
fb73857a
PP
3330#if defined(LOCAL_PATCH_COUNT)
3331 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3332 PerlIO_printf(PerlIO_stdout(),
3333 "\n(with %d registered patch%s, "
3334 "see perl -V for more detail)",
bb7a0f54 3335 LOCAL_PATCH_COUNT,
b0e47665 3336 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3337#endif
1a30305b 3338
b0e47665 3339 PerlIO_printf(PerlIO_stdout(),
34ce1597 3340 "\n\nCopyright 1987-2007, Larry Wall\n");
eae9c151
JH
3341#ifdef MACOS_TRADITIONAL
3342 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3343 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3344 "maintained by Chris Nandor\n");
eae9c151 3345#endif
79072805 3346#ifdef MSDOS
b0e47665
GS
3347 PerlIO_printf(PerlIO_stdout(),
3348 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3349#endif
3350#ifdef DJGPP
b0e47665
GS
3351 PerlIO_printf(PerlIO_stdout(),
3352 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3353 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3354#endif
79072805 3355#ifdef OS2
b0e47665
GS
3356 PerlIO_printf(PerlIO_stdout(),
3357 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3358 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3359#endif
79072805 3360#ifdef atarist
b0e47665
GS
3361 PerlIO_printf(PerlIO_stdout(),
3362 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3363#endif
a3f9223b 3364#ifdef __BEOS__
b0e47665
GS
3365 PerlIO_printf(PerlIO_stdout(),
3366 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3367#endif
1d84e8df 3368#ifdef MPE
b0e47665 3369 PerlIO_printf(PerlIO_stdout(),
e583a879 3370 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3371#endif
9d116dd7 3372#ifdef OEMVS
b0e47665
GS
3373 PerlIO_printf(PerlIO_stdout(),
3374 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3375#endif
495c5fdc 3376#ifdef __VOS__
b0e47665 3377 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3378 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3379#endif
092bebab 3380#ifdef __OPEN_VM
b0e47665
GS
3381 PerlIO_printf(PerlIO_stdout(),
3382 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3383#endif
a1a0e61e 3384#ifdef POSIX_BC
b0e47665
GS
3385 PerlIO_printf(PerlIO_stdout(),
3386 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3387#endif
61ae2fbf 3388#ifdef __MINT__
b0e47665
GS
3389 PerlIO_printf(PerlIO_stdout(),
3390 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3391#endif
f83d2536 3392#ifdef EPOC
b0e47665 3393 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3394 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3395#endif
e1caacb4 3396#ifdef UNDER_CE
b475b3e6
JH
3397 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3398 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3399 wce_hitreturn();
3400#endif
a0fd4948 3401#ifdef __SYMBIAN32__
27da23d5
JH
3402 PerlIO_printf(PerlIO_stdout(),
3403 "Symbian port by Nokia, 2004-2005\n");
3404#endif
baed7233
DL
3405#ifdef BINARY_BUILD_NOTICE
3406 BINARY_BUILD_NOTICE;
3407#endif
b0e47665
GS
3408 PerlIO_printf(PerlIO_stdout(),
3409 "\n\
79072805 3410Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3411GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3412Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3413this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3414Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3415 my_exit(0);
79072805 3416 case 'w':
b2e5e6ba 3417 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3418 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3419 }
599cee73
PM
3420 s++;
3421 return s;
3422 case 'W':
ac27b0f5 3423 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3424 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3425 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3426 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3427 s++;
3428 return s;
3429 case 'X':
ac27b0f5 3430 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3431 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3432 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3433 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3434 s++;
3435 return s;
a0d0e21e 3436 case '*':
79072805
LW
3437 case ' ':
3438 if (s[1] == '-') /* Additional switches on #! line. */
3439 return s+2;
3440 break;
a0d0e21e 3441 case '-':
79072805 3442 case 0:
51882d45 3443#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3444 case '\r':
3445#endif
79072805
LW
3446 case '\n':
3447 case '\t':
3448 break;
aa689395
PP
3449#ifdef ALTERNATE_SHEBANG
3450 case 'S': /* OS/2 needs -S on "extproc" line. */
3451 break;
3452#endif
a0d0e21e 3453 case 'P':
3280af22 3454 if (PL_preprocess)
a0d0e21e
LW
3455 return s+1;
3456 /* FALL THROUGH */
79072805 3457 default:
cea2e8a9 3458 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3459 }
bd61b366 3460 return NULL;
79072805
LW
3461}
3462
3463/* compliments of Tom Christiansen */
3464
3465/* unexec() can be found in the Gnu emacs distribution */
ee580363 3466/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3467
3468void
864dbfa3 3469Perl_my_unexec(pTHX)
79072805 3470{
b37c2d43 3471 PERL_UNUSED_CONTEXT;
79072805 3472#ifdef UNEXEC
b37c2d43
AL
3473 SV * prog = newSVpv(BIN_EXP, 0);
3474 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3475 int status = 1;
79072805
LW
3476 extern int etext;
3477
396482e1 3478 sv_catpvs(prog, "/perl");
396482e1 3479 sv_catpvs(file, ".perldump");
79072805 3480
ee580363
GS
3481 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3482 /* unexec prints msg to stderr in case of failure */
6ad3d225 3483 PerlProc_exit(status);
79072805 3484#else
a5f75d66
AD
3485# ifdef VMS
3486# include <lib$routines.h>
3487 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3488# elif defined(WIN32) || defined(__CYGWIN__)
3489 Perl_croak(aTHX_ "dump is not supported");
aa689395 3490# else
79072805 3491 ABORT(); /* for use with undump */
aa689395 3492# endif
a5f75d66 3493#endif
79072805
LW
3494}
3495
cb68f92d
GS
3496/* initialize curinterp */
3497STATIC void
cea2e8a9 3498S_init_interp(pTHX)
cb68f92d 3499{
97aff369 3500 dVAR;
acfe0abc
GS
3501#ifdef MULTIPLICITY
3502# define PERLVAR(var,type)
3503