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1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3246d7a3 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
a687059c 5 *
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6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
a687059c 8 *
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9 */
10
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11/*
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
13 */
45d8adaa 14
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15/* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
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19 */
20
ae3f3efd
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21/* PSz 12 Nov 03
22 *
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
26 *
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
32 *
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
38 *
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
42 *
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
45 *
46 * References:
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
55 * CVE candidate:
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
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85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
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95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
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99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
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108#endif
109
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110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121 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
e6827a76 140static void
daa7d858 141S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 142{
27da23d5 143 dVAR;
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144 if (!PL_curinterp) {
145 PERL_SET_INTERP(my_perl);
3db8f154 146#if defined(USE_ITHREADS)
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147 INIT_THREADS;
148 ALLOC_THREAD_KEY;
149 PERL_SET_THX(my_perl);
150 OP_REFCNT_INIT;
151 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 152# endif
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153#ifdef PERL_IMPLICIT_CONTEXT
154 MUTEX_INIT(&PL_my_ctx_mutex);
155# endif
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156 }
157 else {
158 PERL_SET_THX(my_perl);
159 }
160}
06d86050 161
32e30700
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162#ifdef PERL_IMPLICIT_SYS
163PerlInterpreter *
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164perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
165 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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166 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
167 struct IPerlDir* ipD, struct IPerlSock* ipS,
168 struct IPerlProc* ipP)
169{
170 PerlInterpreter *my_perl;
9f653bb5 171 /* Newx() needs interpreter, so call malloc() instead */
32e30700 172 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 173 S_init_tls_and_interp(my_perl);
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174 Zero(my_perl, 1, PerlInterpreter);
175 PL_Mem = ipM;
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176 PL_MemShared = ipMS;
177 PL_MemParse = ipMP;
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178 PL_Env = ipE;
179 PL_StdIO = ipStd;
180 PL_LIO = ipLIO;
181 PL_Dir = ipD;
182 PL_Sock = ipS;
183 PL_Proc = ipP;
7766f137 184
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185 return my_perl;
186}
187#else
954c1994
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188
189/*
ccfc67b7
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190=head1 Embedding Functions
191
954c1994
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192=for apidoc perl_alloc
193
194Allocates a new Perl interpreter. See L<perlembed>.
195
196=cut
197*/
198
93a17b20 199PerlInterpreter *
cea2e8a9 200perl_alloc(void)
79072805 201{
cea2e8a9 202 PerlInterpreter *my_perl;
79072805 203
9f653bb5 204 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 205 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 206
e6827a76 207 S_init_tls_and_interp(my_perl);
07409e01 208 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
79072805 209}
32e30700 210#endif /* PERL_IMPLICIT_SYS */
79072805 211
954c1994
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212/*
213=for apidoc perl_construct
214
215Initializes a new Perl interpreter. See L<perlembed>.
216
217=cut
218*/
219
79072805 220void
0cb96387 221perl_construct(pTHXx)
79072805 222{
27da23d5 223 dVAR;
9d4ba2ae 224 PERL_UNUSED_ARG(my_perl);
8990e307 225#ifdef MULTIPLICITY
54aff467 226 init_interp();
ac27b0f5 227 PL_perl_destruct_level = 1;
54aff467
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228#else
229 if (PL_perl_destruct_level > 0)
230 init_interp();
231#endif
33f46ff6 232 /* Init the real globals (and main thread)? */
3280af22 233 if (!PL_linestr) {
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234 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
235
561b68a9 236 PL_linestr = newSV(79);
3280af22 237 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 238
3280af22 239 if (!SvREADONLY(&PL_sv_undef)) {
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240 /* set read-only and try to insure than we wont see REFCNT==0
241 very often */
242
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243 SvREADONLY_on(&PL_sv_undef);
244 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 245
3280af22 246 sv_setpv(&PL_sv_no,PL_No);
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247 /* value lookup in void context - happens to have the side effect
248 of caching the numeric forms. */
249 SvIV(&PL_sv_no);
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250 SvNV(&PL_sv_no);
251 SvREADONLY_on(&PL_sv_no);
252 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 253
3280af22 254 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 255 SvIV(&PL_sv_yes);
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256 SvNV(&PL_sv_yes);
257 SvREADONLY_on(&PL_sv_yes);
258 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
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259
260 SvREADONLY_on(&PL_sv_placeholder);
261 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 262 }
79072805 263
8aad04aa 264 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 265#ifdef PERL_USES_PL_PIDSTATUS
3280af22 266 PL_pidstatus = newHV();
ca0c25f6 267#endif
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268 }
269
396482e1 270 PL_rs = newSVpvs("\n");
dc92893f 271
cea2e8a9 272 init_stacks();
79072805 273
748a9306 274 init_ids();
3280af22 275 PL_lex_state = LEX_NOTPARSING;
a5f75d66 276
312caa8e 277 JMPENV_BOOTSTRAP;
f86702cc 278 STATUS_ALL_SUCCESS;
279
0672f40e 280 init_i18nl10n(1);
36477c24 281 SET_NUMERIC_STANDARD();
0b5b802d 282
ab821d7f 283#if defined(LOCAL_PATCH_COUNT)
3280af22 284 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 285#endif
286
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287#ifdef HAVE_INTERP_INTERN
288 sys_intern_init();
289#endif
290
3a1ee7e8 291 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 292
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293 PL_fdpid = newAV(); /* for remembering popen pids by fd */
294 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 295 PL_errors = newSVpvs("");
48c6b404 296 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
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297 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
298 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 299#ifdef USE_ITHREADS
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300 PL_regex_padav = newAV();
301 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
302 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 303#endif
e5dd39fc 304#ifdef USE_REENTRANT_API
59bd0823 305 Perl_reentrant_init(aTHX);
e5dd39fc 306#endif
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307
308 /* Note that strtab is a rather special HV. Assumptions are made
309 about not iterating on it, and not adding tie magic to it.
310 It is properly deallocated in perl_destruct() */
311 PL_strtab = newHV();
312
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313 HvSHAREKEYS_off(PL_strtab); /* mandatory */
314 hv_ksplit(PL_strtab, 512);
315
0631ea03
AB
316#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
317 _dyld_lookup_and_bind
318 ("__environ", (unsigned long *) &environ_pointer, NULL);
319#endif /* environ */
320
2f42fcb0
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321#ifndef PERL_MICRO
322# ifdef USE_ENVIRON_ARRAY
0631ea03 323 PL_origenviron = environ;
2f42fcb0 324# endif
0631ea03
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325#endif
326
5311654c 327 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 328 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
329 * BeOS has those, but returns the wrong value.
330 * The HZ if not originally defined has been by now
331 * been defined as CLK_TCK, if available. */
dbc1d986 332#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
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JH
333 PL_clocktick = sysconf(_SC_CLK_TCK);
334 if (PL_clocktick <= 0)
335#endif
336 PL_clocktick = HZ;
337
081fc587
AB
338 PL_stashcache = newHV();
339
e6830b13
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340 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
341 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 342
27da23d5
JH
343#ifdef HAS_MMAP
344 if (!PL_mmap_page_size) {
345#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
346 {
347 SETERRNO(0, SS_NORMAL);
348# ifdef _SC_PAGESIZE
349 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
350# else
351 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
352# endif
353 if ((long) PL_mmap_page_size < 0) {
354 if (errno) {
44f8325f 355 SV * const error = ERRSV;
27da23d5 356 (void) SvUPGRADE(error, SVt_PV);
0510663f 357 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
358 }
359 else
360 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
361 }
362 }
363#else
364# ifdef HAS_GETPAGESIZE
365 PL_mmap_page_size = getpagesize();
366# else
367# if defined(I_SYS_PARAM) && defined(PAGESIZE)
368 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
369# endif
370# endif
371#endif
372 if (PL_mmap_page_size <= 0)
373 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
374 (IV) PL_mmap_page_size);
375 }
376#endif /* HAS_MMAP */
377
378#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
379 PL_timesbase.tms_utime = 0;
380 PL_timesbase.tms_stime = 0;
381 PL_timesbase.tms_cutime = 0;
382 PL_timesbase.tms_cstime = 0;
383#endif
384
8990e307 385 ENTER;
79072805
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386}
387
954c1994 388/*
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389=for apidoc nothreadhook
390
391Stub that provides thread hook for perl_destruct when there are
392no threads.
393
394=cut
395*/
396
397int
4e9e3734 398Perl_nothreadhook(pTHX)
62375a60
NIS
399{
400 return 0;
401}
402
41e4abd8
NC
403#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
404void
405Perl_dump_sv_child(pTHX_ SV *sv)
406{
407 ssize_t got;
bf357333
NC
408 const int sock = PL_dumper_fd;
409 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
410 union control_un control;
411 struct msghdr msg;
808ad2d0 412 struct iovec vec[2];
bf357333 413 struct cmsghdr *cmptr;
808ad2d0
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414 int returned_errno;
415 unsigned char buffer[256];
41e4abd8 416
bf357333 417 if(sock == -1 || debug_fd == -1)
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NC
418 return;
419
420 PerlIO_flush(Perl_debug_log);
421
bf357333
NC
422 /* All these shenanigans are to pass a file descriptor over to our child for
423 it to dump out to. We can't let it hold open the file descriptor when it
424 forks, as the file descriptor it will dump to can turn out to be one end
425 of pipe that some other process will wait on for EOF. (So as it would
426 be open, the wait would be forever. */
427
428 msg.msg_control = control.control;
429 msg.msg_controllen = sizeof(control.control);
430 /* We're a connected socket so we don't need a destination */
431 msg.msg_name = NULL;
432 msg.msg_namelen = 0;
433 msg.msg_iov = vec;
808ad2d0 434 msg.msg_iovlen = 1;
bf357333
NC
435
436 cmptr = CMSG_FIRSTHDR(&msg);
437 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
438 cmptr->cmsg_level = SOL_SOCKET;
439 cmptr->cmsg_type = SCM_RIGHTS;
440 *((int *)CMSG_DATA(cmptr)) = 1;
441
442 vec[0].iov_base = (void*)&sv;
443 vec[0].iov_len = sizeof(sv);
444 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
445
446 if(got < 0) {
bf357333 447 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
448 abort();
449 }
bf357333
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450 if(got < sizeof(sv)) {
451 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
452 abort();
453 }
454
808ad2d0
NC
455 /* Return protocol is
456 int: errno value
457 unsigned char: length of location string (0 for empty)
458 unsigned char*: string (not terminated)
459 */
460 vec[0].iov_base = (void*)&returned_errno;
461 vec[0].iov_len = sizeof(returned_errno);
462 vec[1].iov_base = buffer;
463 vec[1].iov_len = 1;
464
465 got = readv(sock, vec, 2);
41e4abd8
NC
466
467 if(got < 0) {
468 perror("Debug leaking scalars parent read failed");
808ad2d0 469 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
470 abort();
471 }
808ad2d0 472 if(got < sizeof(returned_errno) + 1) {
41e4abd8 473 perror("Debug leaking scalars parent short read");
808ad2d0 474 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
475 abort();
476 }
477
808ad2d0
NC
478 if (*buffer) {
479 got = read(sock, buffer + 1, *buffer);
480 if(got < 0) {
481 perror("Debug leaking scalars parent read 2 failed");
482 PerlIO_flush(PerlIO_stderr());
483 abort();
484 }
485
486 if(got < *buffer) {
487 perror("Debug leaking scalars parent short read 2");
488 PerlIO_flush(PerlIO_stderr());
489 abort();
490 }
491 }
492
493 if (returned_errno || *buffer) {
494 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
495 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
496 returned_errno, strerror(returned_errno));
41e4abd8
NC
497 }
498}
499#endif
500
62375a60 501/*
954c1994
GS
502=for apidoc perl_destruct
503
504Shuts down a Perl interpreter. See L<perlembed>.
505
506=cut
507*/
508
31d77e54 509int
0cb96387 510perl_destruct(pTHXx)
79072805 511{
27da23d5 512 dVAR;
7c474504 513 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 514 HV *hv;
2aa47728 515#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
516 pid_t child;
517#endif
8990e307 518
9d4ba2ae
AL
519 PERL_UNUSED_ARG(my_perl);
520
7766f137
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521 /* wait for all pseudo-forked children to finish */
522 PERL_WAIT_FOR_CHILDREN;
523
3280af22 524 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
525#ifdef DEBUGGING
526 {
9d4ba2ae
AL
527 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
528 if (s) {
e1ec3a88 529 const int i = atoi(s);
5f05dabc 530 if (destruct_level < i)
531 destruct_level = i;
532 }
4633a7c4
LW
533 }
534#endif
535
27da23d5 536 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
537 dJMPENV;
538 int x = 0;
539
540 JMPENV_PUSH(x);
1b6737cc 541 PERL_UNUSED_VAR(x);
f3faeb53
AB
542 if (PL_endav && !PL_minus_c)
543 call_list(PL_scopestack_ix, PL_endav);
544 JMPENV_POP;
26f423df 545 }
f3faeb53 546 LEAVE;
a0d0e21e
LW
547 FREETMPS;
548
e00b64d4 549 /* Need to flush since END blocks can produce output */
f13a2bc0 550 my_fflush_all();
e00b64d4 551
62375a60
NIS
552 if (CALL_FPTR(PL_threadhook)(aTHX)) {
553 /* Threads hook has vetoed further cleanup */
37038d91 554 return STATUS_EXIT;
62375a60
NIS
555 }
556
2aa47728
NC
557#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
558 if (destruct_level != 0) {
559 /* Fork here to create a child. Our child's job is to preserve the
560 state of scalars prior to destruction, so that we can instruct it
561 to dump any scalars that we later find have leaked.
562 There's no subtlety in this code - it assumes POSIX, and it doesn't
563 fail gracefully */
564 int fd[2];
565
566 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
567 perror("Debug leaking scalars socketpair failed");
568 abort();
569 }
570
571 child = fork();
572 if(child == -1) {
573 perror("Debug leaking scalars fork failed");
574 abort();
575 }
576 if (!child) {
577 /* We are the child */
3125a5a4
NC
578 const int sock = fd[1];
579 const int debug_fd = PerlIO_fileno(Perl_debug_log);
580 int f;
808ad2d0
NC
581 const char *where;
582 /* Our success message is an integer 0, and a char 0 */
583 static const char success[sizeof(int) + 1];
3125a5a4 584
2aa47728 585 close(fd[0]);
2aa47728 586
3125a5a4
NC
587 /* We need to close all other file descriptors otherwise we end up
588 with interesting hangs, where the parent closes its end of a
589 pipe, and sits waiting for (another) child to terminate. Only
590 that child never terminates, because it never gets EOF, because
bf357333
NC
591 we also have the far end of the pipe open. We even need to
592 close the debugging fd, because sometimes it happens to be one
593 end of a pipe, and a process is waiting on the other end for
594 EOF. Normally it would be closed at some point earlier in
595 destruction, but if we happen to cause the pipe to remain open,
596 EOF never occurs, and we get an infinite hang. Hence all the
597 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
598
599 f = sysconf(_SC_OPEN_MAX);
600 if(f < 0) {
808ad2d0
NC
601 where = "sysconf failed";
602 goto abort;
3125a5a4
NC
603 }
604 while (f--) {
605 if (f == sock)
606 continue;
3125a5a4
NC
607 close(f);
608 }
609
2aa47728
NC
610 while (1) {
611 SV *target;
bf357333
NC
612 union control_un control;
613 struct msghdr msg;
614 struct iovec vec[1];
615 struct cmsghdr *cmptr;
616 ssize_t got;
617 int got_fd;
618
619 msg.msg_control = control.control;
620 msg.msg_controllen = sizeof(control.control);
621 /* We're a connected socket so we don't need a source */
622 msg.msg_name = NULL;
623 msg.msg_namelen = 0;
624 msg.msg_iov = vec;
625 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
626
627 vec[0].iov_base = (void*)&target;
628 vec[0].iov_len = sizeof(target);
629
630 got = recvmsg(sock, &msg, 0);
2aa47728
NC
631
632 if(got == 0)
633 break;
634 if(got < 0) {
808ad2d0
NC
635 where = "recv failed";
636 goto abort;
2aa47728
NC
637 }
638 if(got < sizeof(target)) {
808ad2d0
NC
639 where = "short recv";
640 goto abort;
2aa47728 641 }
bf357333 642
808ad2d0
NC
643 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
644 where = "no cmsg";
645 goto abort;
646 }
647 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
648 where = "wrong cmsg_len";
649 goto abort;
650 }
651 if(cmptr->cmsg_level != SOL_SOCKET) {
652 where = "wrong cmsg_level";
653 goto abort;
654 }
655 if(cmptr->cmsg_type != SCM_RIGHTS) {
656 where = "wrong cmsg_type";
657 goto abort;
658 }
bf357333
NC
659
660 got_fd = *(int*)CMSG_DATA(cmptr);
661 /* For our last little bit of trickery, put the file descriptor
662 back into Perl_debug_log, as if we never actually closed it
663 */
808ad2d0
NC
664 if(got_fd != debug_fd) {
665 if (dup2(got_fd, debug_fd) == -1) {
666 where = "dup2";
667 goto abort;
668 }
669 }
2aa47728 670 sv_dump(target);
bf357333 671
2aa47728
NC
672 PerlIO_flush(Perl_debug_log);
673
808ad2d0 674 got = write(sock, &success, sizeof(success));
2aa47728
NC
675
676 if(got < 0) {
808ad2d0
NC
677 where = "write failed";
678 goto abort;
2aa47728 679 }
808ad2d0
NC
680 if(got < sizeof(success)) {
681 where = "short write";
682 goto abort;
2aa47728
NC
683 }
684 }
685 _exit(0);
808ad2d0
NC
686 abort:
687 {
688 int send_errno = errno;
689 unsigned char length = (unsigned char) strlen(where);
690 struct iovec failure[3] = {
691 {(void*)&send_errno, sizeof(send_errno)},
692 {&length, 1},
693 {(void*)where, length}
694 };
695 int got = writev(sock, failure, 3);
696 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
697 in the parent if we try to read from the socketpair after the
698 child has exited, even if there was data to read.
699 So sleep a bit to give the parent a fighting chance of
700 reading the data. */
701 sleep(2);
702 _exit((got == -1) ? errno : 0);
703 }
bf357333 704 /* End of child. */
2aa47728 705 }
41e4abd8 706 PL_dumper_fd = fd[0];
2aa47728
NC
707 close(fd[1]);
708 }
709#endif
710
ff0cee69 711 /* We must account for everything. */
712
713 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
714 /* Do this now, because destroying ops can cause new SVs to be generated
715 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
716 PL_curcop to point to a valid op from which the filename structure
717 member is copied. */
718 PL_curcop = &PL_compiling;
3280af22 719 if (PL_main_root) {
4e380990
DM
720 /* ensure comppad/curpad to refer to main's pad */
721 if (CvPADLIST(PL_main_cv)) {
722 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
723 }
3280af22
NIS
724 op_free(PL_main_root);
725 PL_main_root = Nullop;
a0d0e21e 726 }
3280af22
NIS
727 PL_main_start = Nullop;
728 SvREFCNT_dec(PL_main_cv);
601f1833 729 PL_main_cv = NULL;
24d3c518 730 PL_dirty = TRUE;
ff0cee69 731
13621cfb
NIS
732 /* Tell PerlIO we are about to tear things apart in case
733 we have layers which are using resources that should
734 be cleaned up now.
735 */
736
737 PerlIO_destruct(aTHX);
738
3280af22 739 if (PL_sv_objcount) {
a0d0e21e
LW
740 /*
741 * Try to destruct global references. We do this first so that the
742 * destructors and destructees still exist. Some sv's might remain.
743 * Non-referenced objects are on their own.
744 */
a0d0e21e 745 sv_clean_objs();
bf9cdc68 746 PL_sv_objcount = 0;
a0de6cf5 747 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 748 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
749 }
750
5cd24f17 751 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 752 SvREFCNT_dec(PL_warnhook);
a0714e2c 753 PL_warnhook = NULL;
3280af22 754 SvREFCNT_dec(PL_diehook);
a0714e2c 755 PL_diehook = NULL;
5cd24f17 756
4b556e6c 757 /* call exit list functions */
3280af22 758 while (PL_exitlistlen-- > 0)
acfe0abc 759 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 760
3280af22 761 Safefree(PL_exitlist);
4b556e6c 762
1c4916e5
CB
763 PL_exitlist = NULL;
764 PL_exitlistlen = 0;
765
a0d0e21e 766 if (destruct_level == 0){
8990e307 767
a0d0e21e 768 DEBUG_P(debprofdump());
ac27b0f5 769
56a2bab7
NIS
770#if defined(PERLIO_LAYERS)
771 /* No more IO - including error messages ! */
772 PerlIO_cleanup(aTHX);
773#endif
774
a0d0e21e 775 /* The exit() function will do everything that needs doing. */
37038d91 776 return STATUS_EXIT;
a0d0e21e 777 }
5dd60ef7 778
551a8b83 779 /* jettison our possibly duplicated environment */
4b647fb0
DM
780 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
781 * so we certainly shouldn't free it here
782 */
2f42fcb0 783#ifndef PERL_MICRO
4b647fb0 784#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 785 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
786#ifdef USE_ITHREADS
787 /* only main thread can free environ[0] contents */
788 && PL_curinterp == aTHX
789#endif
790 )
791 {
551a8b83
JH
792 I32 i;
793
794 for (i = 0; environ[i]; i++)
4b420006 795 safesysfree(environ[i]);
0631ea03 796
4b420006
JH
797 /* Must use safesysfree() when working with environ. */
798 safesysfree(environ);
551a8b83
JH
799
800 environ = PL_origenviron;
801 }
802#endif
2f42fcb0 803#endif /* !PERL_MICRO */
551a8b83 804
804ffa60 805 /* reset so print() ends up where we expect */
a0714e2c 806 setdefout(NULL);
804ffa60 807
5f8cb046
DM
808#ifdef USE_ITHREADS
809 /* the syntax tree is shared between clones
810 * so op_free(PL_main_root) only ReREFCNT_dec's
811 * REGEXPs in the parent interpreter
812 * we need to manually ReREFCNT_dec for the clones
813 */
814 {
815 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 816 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
817
818 while (i) {
c4420975 819 SV * const resv = ary[--i];
35061a7e
DM
820
821 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 822 /* this is PL_reg_curpm, already freed
35061a7e
DM
823 * flag is set in regexec.c:S_regtry
824 */
825 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 826 }
1cc8b4c5
AB
827 else if(SvREPADTMP(resv)) {
828 SvREPADTMP_off(resv);
829 }
a560f29b
NC
830 else if(SvIOKp(resv)) {
831 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
832 ReREFCNT_dec(re);
833 }
834 }
835 }
836 SvREFCNT_dec(PL_regex_padav);
7d49f689 837 PL_regex_padav = NULL;
5f8cb046
DM
838 PL_regex_pad = NULL;
839#endif
840
081fc587
AB
841 SvREFCNT_dec((SV*) PL_stashcache);
842 PL_stashcache = NULL;
843
5f05dabc 844 /* loosen bonds of global variables */
845
3280af22
NIS
846 if(PL_rsfp) {
847 (void)PerlIO_close(PL_rsfp);
848 PL_rsfp = Nullfp;
8ebc5c01 849 }
850
851 /* Filters for program text */
3280af22 852 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 853 PL_rsfp_filters = NULL;
8ebc5c01 854
855 /* switches */
3280af22
NIS
856 PL_preprocess = FALSE;
857 PL_minus_n = FALSE;
858 PL_minus_p = FALSE;
859 PL_minus_l = FALSE;
860 PL_minus_a = FALSE;
861 PL_minus_F = FALSE;
862 PL_doswitches = FALSE;
599cee73 863 PL_dowarn = G_WARN_OFF;
3280af22
NIS
864 PL_doextract = FALSE;
865 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
866 PL_unsafe = FALSE;
867
868 Safefree(PL_inplace);
bd61b366 869 PL_inplace = NULL;
a7cb1f99 870 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
871
872 if (PL_e_script) {
873 SvREFCNT_dec(PL_e_script);
a0714e2c 874 PL_e_script = NULL;
8ebc5c01 875 }
876
bf9cdc68
RG
877 PL_perldb = 0;
878
8ebc5c01 879 /* magical thingies */
880
7889fe52 881 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 882 PL_ofs_sv = NULL;
5f05dabc 883
7889fe52 884 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 885 PL_ors_sv = NULL;
8ebc5c01 886
3280af22 887 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 888 PL_rs = NULL;
dc92893f 889
d33b2eba
GS
890 PL_multiline = 0; /* $* */
891 Safefree(PL_osname); /* $^O */
bd61b366 892 PL_osname = NULL;
5f05dabc 893
3280af22 894 SvREFCNT_dec(PL_statname);
a0714e2c
SS
895 PL_statname = NULL;
896 PL_statgv = NULL;
5f05dabc 897
8ebc5c01 898 /* defgv, aka *_ should be taken care of elsewhere */
899
8ebc5c01 900 /* clean up after study() */
3280af22 901 SvREFCNT_dec(PL_lastscream);
a0714e2c 902 PL_lastscream = NULL;
3280af22
NIS
903 Safefree(PL_screamfirst);
904 PL_screamfirst = 0;
905 Safefree(PL_screamnext);
906 PL_screamnext = 0;
8ebc5c01 907
7d5ea4e7
GS
908 /* float buffer */
909 Safefree(PL_efloatbuf);
bd61b366 910 PL_efloatbuf = NULL;
7d5ea4e7
GS
911 PL_efloatsize = 0;
912
8ebc5c01 913 /* startup and shutdown function lists */
3280af22 914 SvREFCNT_dec(PL_beginav);
5a837c8f 915 SvREFCNT_dec(PL_beginav_save);
3280af22 916 SvREFCNT_dec(PL_endav);
7d30b5c4 917 SvREFCNT_dec(PL_checkav);
ece599bd 918 SvREFCNT_dec(PL_checkav_save);
3280af22 919 SvREFCNT_dec(PL_initav);
7d49f689
NC
920 PL_beginav = NULL;
921 PL_beginav_save = NULL;
922 PL_endav = NULL;
923 PL_checkav = NULL;
924 PL_checkav_save = NULL;
925 PL_initav = NULL;
5618dfe8 926
8ebc5c01 927 /* shortcuts just get cleared */
a0714e2c
SS
928 PL_envgv = NULL;
929 PL_incgv = NULL;
930 PL_hintgv = NULL;
931 PL_errgv = NULL;
932 PL_argvgv = NULL;
933 PL_argvoutgv = NULL;
934 PL_stdingv = NULL;
935 PL_stderrgv = NULL;
936 PL_last_in_gv = NULL;
937 PL_replgv = NULL;
938 PL_DBgv = NULL;
939 PL_DBline = NULL;
940 PL_DBsub = NULL;
941 PL_DBsingle = NULL;
942 PL_DBtrace = NULL;
943 PL_DBsignal = NULL;
944 PL_DBassertion = NULL;
601f1833 945 PL_DBcv = NULL;
7d49f689 946 PL_dbargs = NULL;
5c284bb0 947 PL_debstash = NULL;
8ebc5c01 948
7a1c5554 949 SvREFCNT_dec(PL_argvout_stack);
7d49f689 950 PL_argvout_stack = NULL;
8ebc5c01 951
5c831c24 952 SvREFCNT_dec(PL_modglobal);
5c284bb0 953 PL_modglobal = NULL;
5c831c24 954 SvREFCNT_dec(PL_preambleav);
7d49f689 955 PL_preambleav = NULL;
5c831c24 956 SvREFCNT_dec(PL_subname);
a0714e2c 957 PL_subname = NULL;
5c831c24 958 SvREFCNT_dec(PL_linestr);
a0714e2c 959 PL_linestr = NULL;
ca0c25f6 960#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 961 SvREFCNT_dec(PL_pidstatus);
5c284bb0 962 PL_pidstatus = NULL;
ca0c25f6 963#endif
5c831c24 964 SvREFCNT_dec(PL_toptarget);
a0714e2c 965 PL_toptarget = NULL;
5c831c24 966 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
967 PL_bodytarget = NULL;
968 PL_formtarget = NULL;
5c831c24 969
d33b2eba 970 /* free locale stuff */
b9582b6a 971#ifdef USE_LOCALE_COLLATE
d33b2eba 972 Safefree(PL_collation_name);
bd61b366 973 PL_collation_name = NULL;
b9582b6a 974#endif
d33b2eba 975
b9582b6a 976#ifdef USE_LOCALE_NUMERIC
d33b2eba 977 Safefree(PL_numeric_name);
bd61b366 978 PL_numeric_name = NULL;
a453c169 979 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 980 PL_numeric_radix_sv = NULL;
b9582b6a 981#endif
d33b2eba 982
5c831c24
GS
983 /* clear utf8 character classes */
984 SvREFCNT_dec(PL_utf8_alnum);
985 SvREFCNT_dec(PL_utf8_alnumc);
986 SvREFCNT_dec(PL_utf8_ascii);
987 SvREFCNT_dec(PL_utf8_alpha);
988 SvREFCNT_dec(PL_utf8_space);
989 SvREFCNT_dec(PL_utf8_cntrl);
990 SvREFCNT_dec(PL_utf8_graph);
991 SvREFCNT_dec(PL_utf8_digit);
992 SvREFCNT_dec(PL_utf8_upper);
993 SvREFCNT_dec(PL_utf8_lower);
994 SvREFCNT_dec(PL_utf8_print);
995 SvREFCNT_dec(PL_utf8_punct);
996 SvREFCNT_dec(PL_utf8_xdigit);
997 SvREFCNT_dec(PL_utf8_mark);
998 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 999 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1000 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1001 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1002 SvREFCNT_dec(PL_utf8_idstart);
1003 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1004 PL_utf8_alnum = NULL;
1005 PL_utf8_alnumc = NULL;
1006 PL_utf8_ascii = NULL;
1007 PL_utf8_alpha = NULL;
1008 PL_utf8_space = NULL;
1009 PL_utf8_cntrl = NULL;
1010 PL_utf8_graph = NULL;
1011 PL_utf8_digit = NULL;
1012 PL_utf8_upper = NULL;
1013 PL_utf8_lower = NULL;
1014 PL_utf8_print = NULL;
1015 PL_utf8_punct = NULL;
1016 PL_utf8_xdigit = NULL;
1017 PL_utf8_mark = NULL;
1018 PL_utf8_toupper = NULL;
1019 PL_utf8_totitle = NULL;
1020 PL_utf8_tolower = NULL;
1021 PL_utf8_tofold = NULL;
1022 PL_utf8_idstart = NULL;
1023 PL_utf8_idcont = NULL;
5c831c24 1024
971a9dd3
GS
1025 if (!specialWARN(PL_compiling.cop_warnings))
1026 SvREFCNT_dec(PL_compiling.cop_warnings);
a0714e2c 1027 PL_compiling.cop_warnings = NULL;
ac27b0f5
NIS
1028 if (!specialCopIO(PL_compiling.cop_io))
1029 SvREFCNT_dec(PL_compiling.cop_io);
a0714e2c 1030 PL_compiling.cop_io = NULL;
05ec9bb3
NIS
1031 CopFILE_free(&PL_compiling);
1032 CopSTASH_free(&PL_compiling);
5c831c24 1033
a0d0e21e 1034 /* Prepare to destruct main symbol table. */
5f05dabc 1035
3280af22
NIS
1036 hv = PL_defstash;
1037 PL_defstash = 0;
a0d0e21e 1038 SvREFCNT_dec(hv);
5c831c24 1039 SvREFCNT_dec(PL_curstname);
a0714e2c 1040 PL_curstname = NULL;
a0d0e21e 1041
5a844595
GS
1042 /* clear queued errors */
1043 SvREFCNT_dec(PL_errors);
a0714e2c 1044 PL_errors = NULL;
5a844595 1045
a0d0e21e 1046 FREETMPS;
0453d815 1047 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1048 if (PL_scopestack_ix != 0)
9014280d 1049 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1050 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1051 (long)PL_scopestack_ix);
1052 if (PL_savestack_ix != 0)
9014280d 1053 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1054 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1055 (long)PL_savestack_ix);
1056 if (PL_tmps_floor != -1)
9014280d 1057 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1058 (long)PL_tmps_floor + 1);
a0d0e21e 1059 if (cxstack_ix != -1)
9014280d 1060 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1061 (long)cxstack_ix + 1);
a0d0e21e 1062 }
8990e307
LW
1063
1064 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1065 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1066 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1067
1068 /* the 2 is for PL_fdpid and PL_strtab */
1069 while (PL_sv_count > 2 && sv_clean_all())
1070 ;
1071
d33b2eba
GS
1072 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1073 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1074 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1075 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1076
d4777f27
GS
1077 AvREAL_off(PL_fdpid); /* no surviving entries */
1078 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1079 PL_fdpid = NULL;
d33b2eba 1080
6c644e78
GS
1081#ifdef HAVE_INTERP_INTERN
1082 sys_intern_clear();
1083#endif
1084
6e72f9df 1085 /* Destruct the global string table. */
1086 {
1087 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1088 * so that sv_free() won't fail on them.
80459961
NC
1089 * Now that the global string table is using a single hunk of memory
1090 * for both HE and HEK, we either need to explicitly unshare it the
1091 * correct way, or actually free things here.
6e72f9df 1092 */
80459961
NC
1093 I32 riter = 0;
1094 const I32 max = HvMAX(PL_strtab);
c4420975 1095 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1096 HE *hent = array[0];
1097
6e72f9df 1098 for (;;) {
0453d815 1099 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1100 HE * const next = HeNEXT(hent);
9014280d 1101 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1102 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1103 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1104 Safefree(hent);
1105 hent = next;
6e72f9df 1106 }
1107 if (!hent) {
1108 if (++riter > max)
1109 break;
1110 hent = array[riter];
1111 }
1112 }
80459961
NC
1113
1114 Safefree(array);
1115 HvARRAY(PL_strtab) = 0;
1116 HvTOTALKEYS(PL_strtab) = 0;
1117 HvFILL(PL_strtab) = 0;
6e72f9df 1118 }
3280af22 1119 SvREFCNT_dec(PL_strtab);
6e72f9df 1120
e652bb2f 1121#ifdef USE_ITHREADS
c21d1a0f 1122 /* free the pointer tables used for cloning */
a0739874 1123 ptr_table_free(PL_ptr_table);
bf9cdc68 1124 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1125#endif
a0739874 1126
d33b2eba
GS
1127 /* free special SVs */
1128
1129 SvREFCNT(&PL_sv_yes) = 0;
1130 sv_clear(&PL_sv_yes);
1131 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1132 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1133
1134 SvREFCNT(&PL_sv_no) = 0;
1135 sv_clear(&PL_sv_no);
1136 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1137 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1138
9f375a43
DM
1139 {
1140 int i;
1141 for (i=0; i<=2; i++) {
1142 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1143 sv_clear(PERL_DEBUG_PAD(i));
1144 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1145 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1146 }
1147 }
1148
0453d815 1149 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1150 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1151
eba0f806
DM
1152#ifdef DEBUG_LEAKING_SCALARS
1153 if (PL_sv_count != 0) {
1154 SV* sva;
1155 SV* sv;
1156 register SV* svend;
1157
1158 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1159 svend = &sva[SvREFCNT(sva)];
1160 for (sv = sva + 1; sv < svend; ++sv) {
1161 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1162 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1163 " flags=0x%"UVxf
fd0854ff
DM
1164 " refcnt=%"UVuf pTHX__FORMAT "\n"
1165 "\tallocated at %s:%d %s %s%s\n",
1166 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1167 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1168 sv->sv_debug_line,
1169 sv->sv_debug_inpad ? "for" : "by",
1170 sv->sv_debug_optype ?
1171 PL_op_name[sv->sv_debug_optype]: "(none)",
1172 sv->sv_debug_cloned ? " (cloned)" : ""
1173 );
2aa47728 1174#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1175 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1176#endif
eba0f806
DM
1177 }
1178 }
1179 }
1180 }
2aa47728
NC
1181#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1182 {
1183 int status;
1184 fd_set rset;
1185 /* Wait for up to 4 seconds for child to terminate.
1186 This seems to be the least effort way of timing out on reaping
1187 its exit status. */
1188 struct timeval waitfor = {4, 0};
41e4abd8 1189 int sock = PL_dumper_fd;
2aa47728
NC
1190
1191 shutdown(sock, 1);
1192 FD_ZERO(&rset);
1193 FD_SET(sock, &rset);
1194 select(sock + 1, &rset, NULL, NULL, &waitfor);
1195 waitpid(child, &status, WNOHANG);
1196 close(sock);
1197 }
1198#endif
eba0f806 1199#endif
bf9cdc68 1200 PL_sv_count = 0;
eba0f806
DM
1201
1202
56a2bab7 1203#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1204 /* No more IO - including error messages ! */
1205 PerlIO_cleanup(aTHX);
1206#endif
1207
9f4bd222 1208 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1209 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1210 for no arg - and will try and SvREFCNT_dec it.
1211 */
1212 SvREFCNT(&PL_sv_undef) = 0;
1213 SvREADONLY_off(&PL_sv_undef);
1214
3280af22 1215 Safefree(PL_origfilename);
bd61b366 1216 PL_origfilename = NULL;
3280af22 1217 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1218 PL_reg_start_tmp = (char**)NULL;
1219 PL_reg_start_tmpl = 0;
43c5f42d 1220 Safefree(PL_reg_curpm);
82ba1be6 1221 Safefree(PL_reg_poscache);
dd28f7bb 1222 free_tied_hv_pool();
3280af22 1223 Safefree(PL_op_mask);
cf36064f 1224 Safefree(PL_psig_ptr);
bf9cdc68 1225 PL_psig_ptr = (SV**)NULL;
cf36064f 1226 Safefree(PL_psig_name);
bf9cdc68 1227 PL_psig_name = (SV**)NULL;
2c2666fc 1228 Safefree(PL_bitcount);
bd61b366 1229 PL_bitcount = NULL;
ce08f86c 1230 Safefree(PL_psig_pend);
bf9cdc68 1231 PL_psig_pend = (int*)NULL;
a0714e2c 1232 PL_formfeed = NULL;
6e72f9df 1233 nuke_stacks();
bf9cdc68
RG
1234 PL_tainting = FALSE;
1235 PL_taint_warn = FALSE;
3280af22 1236 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1237 PL_debug = 0;
ac27b0f5 1238
a0d0e21e 1239 DEBUG_P(debprofdump());
d33b2eba 1240
e5dd39fc 1241#ifdef USE_REENTRANT_API
10bc17b6 1242 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1243#endif
1244
612f20c3
GS
1245 sv_free_arenas();
1246
fc36a67e 1247 /* As the absolutely last thing, free the non-arena SV for mess() */
1248
3280af22 1249 if (PL_mess_sv) {
f350b448
NC
1250 /* we know that type == SVt_PVMG */
1251
9c63abab 1252 /* it could have accumulated taint magic */
f350b448
NC
1253 MAGIC* mg;
1254 MAGIC* moremagic;
1255 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1256 moremagic = mg->mg_moremagic;
1257 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1258 && mg->mg_len >= 0)
1259 Safefree(mg->mg_ptr);
1260 Safefree(mg);
9c63abab 1261 }
f350b448 1262
fc36a67e 1263 /* we know that type >= SVt_PV */
8bd4d4c5 1264 SvPV_free(PL_mess_sv);
3280af22
NIS
1265 Safefree(SvANY(PL_mess_sv));
1266 Safefree(PL_mess_sv);
a0714e2c 1267 PL_mess_sv = NULL;
fc36a67e 1268 }
37038d91 1269 return STATUS_EXIT;
79072805
LW
1270}
1271
954c1994
GS
1272/*
1273=for apidoc perl_free
1274
1275Releases a Perl interpreter. See L<perlembed>.
1276
1277=cut
1278*/
1279
79072805 1280void
0cb96387 1281perl_free(pTHXx)
79072805 1282{
acfe0abc 1283#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1284# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS
1285# ifdef NETWARE
1286 void *host = nw_internal_host;
1287# else
1288 void *host = w32_internal_host;
1289# endif
ce3e5b80 1290 PerlMem_free(aTHXx);
acfe0abc 1291# ifdef NETWARE
011f1a1a 1292 nw_delete_internal_host(host);
acfe0abc
GS
1293# else
1294 win32_delete_internal_host(host);
1295# endif
1c0ca838
GS
1296# else
1297 PerlMem_free(aTHXx);
1298# endif
acfe0abc
GS
1299#else
1300 PerlMem_free(aTHXx);
76e3520e 1301#endif
79072805
LW
1302}
1303
aebd1ac7
GA
1304#if defined(USE_5005THREADS) || defined(USE_ITHREADS)
1305/* provide destructors to clean up the thread key when libperl is unloaded */
1306#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1307
110d3f98 1308#if defined(__hpux) && __ux_version > 1020 && !defined(__GNUC__)
aebd1ac7
GA
1309#pragma fini "perl_fini"
1310#endif
1311
0dbb1585
AL
1312static void
1313#if defined(__GNUC__)
1314__attribute__((destructor))
aebd1ac7 1315#endif
de009b76 1316perl_fini(void)
aebd1ac7 1317{
27da23d5 1318 dVAR;
aebd1ac7
GA
1319 if (PL_curinterp)
1320 FREE_THREAD_KEY;
1321}
1322
1323#endif /* WIN32 */
1324#endif /* THREADS */
1325
4b556e6c 1326void
864dbfa3 1327Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1328{
97aff369 1329 dVAR;
3280af22
NIS
1330 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1331 PL_exitlist[PL_exitlistlen].fn = fn;
1332 PL_exitlist[PL_exitlistlen].ptr = ptr;
1333 ++PL_exitlistlen;
4b556e6c
JD
1334}
1335
56cf6df8
RGS
1336#ifdef HAS_PROCSELFEXE
1337/* This is a function so that we don't hold on to MAXPATHLEN
1338 bytes of stack longer than necessary
1339 */
1340STATIC void
e1ec3a88 1341S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1342{
1343 char buf[MAXPATHLEN];
1344 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1345
1346 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1347 includes a spurious NUL which will cause $^X to fail in system
1348 or backticks (this will prevent extensions from being built and
1349 many tests from working). readlink is not meant to add a NUL.
1350 Normal readlink works fine.
1351 */
1352 if (len > 0 && buf[len-1] == '\0') {
1353 len--;
1354 }
1355
1356 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1357 returning the text "unknown" from the readlink rather than the path
1358 to the executable (or returning an error from the readlink). Any valid
1359 path has a '/' in it somewhere, so use that to validate the result.
1360 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1361 */
1362 if (len > 0 && memchr(buf, '/', len)) {
1363 sv_setpvn(sv,buf,len);
1364 }
1365 else {
1366 sv_setpv(sv,arg0);
1367 }
1368}
1369#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1370
1371STATIC void
1372S_set_caret_X(pTHX) {
97aff369 1373 dVAR;
fafc274c 1374 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1375 if (tmpgv) {
1376#ifdef HAS_PROCSELFEXE
1377 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1378#else
1379#ifdef OS2
c69033f2 1380 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1381#else
c69033f2 1382 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1383#endif
1384#endif
1385 }
1386}
1387
954c1994
GS
1388/*
1389=for apidoc perl_parse
1390
1391Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1392
1393=cut
1394*/
1395
79072805 1396int
0cb96387 1397perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1398{
27da23d5 1399 dVAR;
6224f72b 1400 I32 oldscope;
6224f72b 1401 int ret;
db36c5a1 1402 dJMPENV;
8d063cd8 1403
9d4ba2ae
AL
1404 PERL_UNUSED_VAR(my_perl);
1405
a687059c
LW
1406#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1407#ifdef IAMSUID
1408#undef IAMSUID
cea2e8a9 1409 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1410setuid perl scripts securely.\n");
ae3f3efd 1411#endif /* IAMSUID */
a687059c
LW
1412#endif
1413
b0891165
JH
1414#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1415 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1416 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1417 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1418 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1419 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1420 if (!PL_rehash_seed_set)
1421 PL_rehash_seed = get_hash_seed();
b0891165 1422 {
9d4ba2ae 1423 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1424
1b6737cc
AL
1425 if (s && (atoi(s) == 1))
1426 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1427 }
1428#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1429
3280af22 1430 PL_origargc = argc;
e2975953 1431 PL_origargv = argv;
a0d0e21e 1432
a2722ac9
GA
1433 if (PL_origalen != 0) {
1434 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1435 }
1436 else {
3cb9023d
JH
1437 /* Set PL_origalen be the sum of the contiguous argv[]
1438 * elements plus the size of the env in case that it is
e9137a8e 1439 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1440 * as the maximum modifiable length of $0. In the worst case
1441 * the area we are able to modify is limited to the size of
43c32782 1442 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1443 * --jhi */
e1ec3a88 1444 const char *s = NULL;
54bfe034 1445 int i;
1b6737cc 1446 const UV mask =
7d8e7db3 1447 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1448 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1449 const UV aligned =
43c32782
JH
1450 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1451
1452 /* See if all the arguments are contiguous in memory. Note
1453 * that 'contiguous' is a loose term because some platforms
1454 * align the argv[] and the envp[]. If the arguments look
1455 * like non-aligned, assume that they are 'strictly' or
1456 * 'traditionally' contiguous. If the arguments look like
1457 * aligned, we just check that they are within aligned
1458 * PTRSIZE bytes. As long as no system has something bizarre
1459 * like the argv[] interleaved with some other data, we are
1460 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1461 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1462 while (*s) s++;
1463 for (i = 1; i < PL_origargc; i++) {
1464 if ((PL_origargv[i] == s + 1
43c32782 1465#ifdef OS2
c8941eeb 1466 || PL_origargv[i] == s + 2
43c32782 1467#endif
c8941eeb
JH
1468 )
1469 ||
1470 (aligned &&
1471 (PL_origargv[i] > s &&
1472 PL_origargv[i] <=
1473 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1474 )
1475 {
1476 s = PL_origargv[i];
1477 while (*s) s++;
1478 }
1479 else
1480 break;
54bfe034 1481 }
54bfe034 1482 }
3cb9023d 1483 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1484 if (s && PL_origenviron) {
43c32782
JH
1485 if ((PL_origenviron[0] == s + 1
1486#ifdef OS2
1487 || (PL_origenviron[0] == s + 9 && (s += 8))
1488#endif
1489 )
1490 ||
1491 (aligned &&
1492 (PL_origenviron[0] > s &&
1493 PL_origenviron[0] <=
1494 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1495 )
1496 {
1497#ifndef OS2
1498 s = PL_origenviron[0];
1499 while (*s) s++;
1500#endif
bd61b366 1501 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1502 /* Force copy of environment. */
1503 for (i = 1; PL_origenviron[i]; i++) {
1504 if (PL_origenviron[i] == s + 1
1505 ||
1506 (aligned &&
1507 (PL_origenviron[i] > s &&
1508 PL_origenviron[i] <=
1509 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1510 )
1511 {
1512 s = PL_origenviron[i];
1513 while (*s) s++;
1514 }
1515 else
1516 break;
54bfe034 1517 }
43c32782 1518 }
54bfe034 1519 }
2d2af554 1520 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1521 }
1522
3280af22 1523 if (PL_do_undump) {
a0d0e21e
LW
1524
1525 /* Come here if running an undumped a.out. */
1526
3280af22
NIS
1527 PL_origfilename = savepv(argv[0]);
1528 PL_do_undump = FALSE;
a0d0e21e 1529 cxstack_ix = -1; /* start label stack again */
748a9306 1530 init_ids();
b7975bdd
NC
1531 assert (!PL_tainted);
1532 TAINT;
1533 S_set_caret_X(aTHX);
1534 TAINT_NOT;
a0d0e21e
LW
1535 init_postdump_symbols(argc,argv,env);
1536 return 0;
1537 }
1538
3280af22 1539 if (PL_main_root) {
3280af22
NIS
1540 op_free(PL_main_root);
1541 PL_main_root = Nullop;
ff0cee69 1542 }
3280af22
NIS
1543 PL_main_start = Nullop;
1544 SvREFCNT_dec(PL_main_cv);
601f1833 1545 PL_main_cv = NULL;
79072805 1546
3280af22
NIS
1547 time(&PL_basetime);
1548 oldscope = PL_scopestack_ix;
599cee73 1549 PL_dowarn = G_WARN_OFF;
f86702cc 1550
14dd3ad8 1551 JMPENV_PUSH(ret);
6224f72b 1552 switch (ret) {
312caa8e 1553 case 0:
14dd3ad8 1554 parse_body(env,xsinit);
7d30b5c4
GS
1555 if (PL_checkav)
1556 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1557 ret = 0;
1558 break;
6224f72b
GS
1559 case 1:
1560 STATUS_ALL_FAILURE;
1561 /* FALL THROUGH */
1562 case 2:
1563 /* my_exit() was called */
3280af22 1564 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1565 LEAVE;
1566 FREETMPS;
3280af22 1567 PL_curstash = PL_defstash;
7d30b5c4
GS
1568 if (PL_checkav)
1569 call_list(oldscope, PL_checkav);
37038d91 1570 ret = STATUS_EXIT;
14dd3ad8 1571 break;
6224f72b 1572 case 3:
bf49b057 1573 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1574 ret = 1;
1575 break;
6224f72b 1576 }
14dd3ad8
GS
1577 JMPENV_POP;
1578 return ret;
1579}
1580
312caa8e 1581STATIC void *
14dd3ad8 1582S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1583{
27da23d5 1584 dVAR;
312caa8e 1585 int argc = PL_origargc;
8f42b153 1586 char **argv = PL_origargv;
e1ec3a88 1587 const char *scriptname = NULL;
312caa8e 1588 VOL bool dosearch = FALSE;
e1ec3a88 1589 const char *validarg = "";
312caa8e
CS
1590 register SV *sv;
1591 register char *s;
bd61b366 1592 const char *cddir = NULL;
ab019eaa 1593#ifdef USE_SITECUSTOMIZE
20ef40cf 1594 bool minus_f = FALSE;
ab019eaa 1595#endif
312caa8e 1596
3280af22 1597 sv_setpvn(PL_linestr,"",0);
396482e1 1598 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1599 SAVEFREESV(sv);
1600 init_main_stash();
54310121 1601
6224f72b
GS
1602 for (argc--,argv++; argc > 0; argc--,argv++) {
1603 if (argv[0][0] != '-' || !argv[0][1])
1604 break;
1605#ifdef DOSUID
1606 if (*validarg)
1607 validarg = " PHOOEY ";
1608 else
1609 validarg = argv[0];
ae3f3efd
PS
1610 /*
1611 * Can we rely on the kernel to start scripts with argv[1] set to
1612 * contain all #! line switches (the whole line)? (argv[0] is set to
1613 * the interpreter name, argv[2] to the script name; argv[3] and
1614 * above may contain other arguments.)
1615 */
13281fa4 1616#endif
6224f72b
GS
1617 s = argv[0]+1;
1618 reswitch:
1619 switch (*s) {
729a02f2 1620 case 'C':
1d5472a9
GS
1621#ifndef PERL_STRICT_CR
1622 case '\r':
1623#endif
6224f72b
GS
1624 case ' ':
1625 case '0':
1626 case 'F':
1627 case 'a':
1628 case 'c':
1629 case 'd':
1630 case 'D':
1631 case 'h':
1632 case 'i':
1633 case 'l':
1634 case 'M':
1635 case 'm':
1636 case 'n':
1637 case 'p':
1638 case 's':
1639 case 'u':
1640 case 'U':
1641 case 'v':
599cee73
PM
1642 case 'W':
1643 case 'X':
6224f72b 1644 case 'w':
06492da6 1645 case 'A':
97bd5664 1646 if ((s = moreswitches(s)))
6224f72b
GS
1647 goto reswitch;
1648 break;
33b78306 1649
1dbad523 1650 case 't':
22f7c9c9 1651 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1652 if( !PL_tainting ) {
1653 PL_taint_warn = TRUE;
1654 PL_tainting = TRUE;
1655 }
1656 s++;
1657 goto reswitch;
6224f72b 1658 case 'T':
22f7c9c9 1659 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1660 PL_tainting = TRUE;
317ea90d 1661 PL_taint_warn = FALSE;
6224f72b
GS
1662 s++;
1663 goto reswitch;
f86702cc 1664
bc9b29db
RH
1665 case 'E':
1666 PL_minus_E = TRUE;
1667 /* FALL THROUGH */
6224f72b 1668 case 'e':
bf4acbe4
GS
1669#ifdef MACOS_TRADITIONAL
1670 /* ignore -e for Dev:Pseudo argument */
1671 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1672 break;
bf4acbe4 1673#endif
a52eba0e 1674 forbid_setid('e', -1);
3280af22 1675 if (!PL_e_script) {
396482e1 1676 PL_e_script = newSVpvs("");
0cb96387 1677 filter_add(read_e_script, NULL);
6224f72b
GS
1678 }
1679 if (*++s)
3280af22 1680 sv_catpv(PL_e_script, s);
6224f72b 1681 else if (argv[1]) {
3280af22 1682 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1683 argc--,argv++;
1684 }
1685 else
bc9b29db 1686 Perl_croak(aTHX_ "No code specified for -%c", *s);
396482e1 1687 sv_catpvs(PL_e_script, "\n");
6224f72b 1688 break;
afe37c7d 1689
20ef40cf 1690 case 'f':
f5542d3a 1691#ifdef USE_SITECUSTOMIZE
20ef40cf 1692 minus_f = TRUE;
f5542d3a 1693#endif
20ef40cf
GA
1694 s++;
1695 goto reswitch;
1696
6224f72b 1697 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1698 forbid_setid('I', -1);
bd61b366 1699 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1700 argc--,argv++;
1701 }
6224f72b 1702 if (s && *s) {
0df16ed7 1703 STRLEN len = strlen(s);
aec46f14 1704 const char * const p = savepvn(s, len);
88fe16b2 1705 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1706 sv_catpvs(sv, "-I");
0df16ed7 1707 sv_catpvn(sv, p, len);
396482e1 1708 sv_catpvs(sv, " ");
6224f72b 1709 Safefree(p);
0df16ed7
GS
1710 }
1711 else
a67e862a 1712 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1713 break;
1714 case 'P':
a52eba0e 1715 forbid_setid('P', -1);
3280af22 1716 PL_preprocess = TRUE;
6224f72b
GS
1717 s++;
1718 goto reswitch;
1719 case 'S':
a52eba0e 1720 forbid_setid('S', -1);
6224f72b
GS
1721 dosearch = TRUE;
1722 s++;
1723 goto reswitch;
1724 case 'V':
7edfd0ef
NC
1725 {
1726 SV *opts_prog;
1727
1728 if (!PL_preambleav)
1729 PL_preambleav = newAV();
1730 av_push(PL_preambleav,
396482e1 1731 newSVpvs("use Config;"));
7edfd0ef
NC
1732 if (*++s != ':') {
1733 STRLEN opts;
1734
396482e1 1735 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1736#ifdef VMS
396482e1 1737 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1738#else
396482e1 1739 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1740#endif
7edfd0ef 1741 opts = SvCUR(opts_prog);
efcaa95b 1742
9cd7d3f2 1743 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1744# ifdef DEBUGGING
e2e4dbf1 1745 " DEBUGGING"
6224f72b 1746# endif
4f185743
NC
1747# ifdef DEBUG_LEAKING_SCALARS
1748 " DEBUG_LEAKING_SCALARS"
1749# endif
85e1fcb9 1750# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1751 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1752# endif
1753# ifdef FAKE_THREADS
e2e4dbf1 1754 " FAKE_THREADS"
85e1fcb9 1755# endif
6224f72b 1756# ifdef MULTIPLICITY
e2e4dbf1 1757 " MULTIPLICITY"
6224f72b 1758# endif
85e1fcb9 1759# ifdef MYMALLOC
e2e4dbf1 1760 " MYMALLOC"
85e1fcb9 1761# endif
3bcf5ed8
SP
1762# ifdef NO_MATHOMS
1763 " NO_MATHOMS"
1764# endif
85e1fcb9 1765# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1766 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1767# endif
1768# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1769 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1770# endif
1771# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1772 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1773# endif
1774# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1775 " PERL_IMPLICIT_SYS"
85e1fcb9
SH
1776# endif
1777# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1778 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1779# endif
1780# ifdef PERL_NEED_APPCTX
e2e4dbf1 1781 " PERL_NEED_APPCTX"
85e1fcb9
SH
1782# endif
1783# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1784 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1785# endif
1786# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1787 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1788# endif
9c0a4d5d
DM
1789# ifdef PERL_TRACK_MEMPOOL
1790 " PERL_TRACK_MEMPOOL"
1791# endif
417cd4a8
SP
1792# ifdef PERL_USE_SAFE_PUTENV
1793 " PERL_USE_SAFE_PUTENV"
1794# endif
ca0c25f6
NC
1795#ifdef PERL_USES_PL_PIDSTATUS
1796 " PERL_USES_PL_PIDSTATUS"
1797#endif
85e1fcb9 1798# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1799 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1800# endif
1801# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1802 " THREADS_HAVE_PIDS"
85e1fcb9 1803# endif
4d1ff10f 1804# ifdef USE_5005THREADS
e2e4dbf1 1805 " USE_5005THREADS"
b363f7ed 1806# endif
85e1fcb9 1807# ifdef USE_64_BIT_ALL
e2e4dbf1 1808 " USE_64_BIT_ALL"
ac5e8965 1809# endif
10cc9d2a 1810# ifdef USE_64_BIT_INT
e2e4dbf1 1811 " USE_64_BIT_INT"
10cc9d2a 1812# endif
85e1fcb9 1813# ifdef USE_ITHREADS
e2e4dbf1 1814 " USE_ITHREADS"
85e1fcb9
SH
1815# endif
1816# ifdef USE_LARGE_FILES
e2e4dbf1 1817 " USE_LARGE_FILES"
ac5e8965
JH
1818# endif
1819# ifdef USE_LONG_DOUBLE
e2e4dbf1 1820 " USE_LONG_DOUBLE"
ac5e8965 1821# endif
85e1fcb9 1822# ifdef USE_PERLIO
e2e4dbf1 1823 " USE_PERLIO"
53430762 1824# endif
85e1fcb9 1825# ifdef USE_REENTRANT_API
e2e4dbf1 1826 " USE_REENTRANT_API"
85e1fcb9
SH
1827# endif
1828# ifdef USE_SFIO
e2e4dbf1 1829 " USE_SFIO"
ac5e8965 1830# endif
20ef40cf 1831# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1832 " USE_SITECUSTOMIZE"
20ef40cf 1833# endif
85e1fcb9 1834# ifdef USE_SOCKS
e2e4dbf1 1835 " USE_SOCKS"
b363f7ed 1836# endif
e2e4dbf1 1837 );
efcaa95b 1838
7edfd0ef
NC
1839 while (SvCUR(opts_prog) > opts+76) {
1840 /* find last space after "options: " and before col 76
1841 */
efcaa95b 1842
7edfd0ef 1843 const char *space;
c4420975 1844 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1845 const char c = pv[opts+76];
1846 pv[opts+76] = '\0';
1847 space = strrchr(pv+opts+26, ' ');
1848 pv[opts+76] = c;
1849 if (!space) break; /* "Can't happen" */
efcaa95b 1850
7edfd0ef 1851 /* break the line before that space */
efcaa95b 1852
7edfd0ef 1853 opts = space - pv;
89529cee 1854 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1855 STR_WITH_LEN("\\n "));
7edfd0ef 1856 }
efcaa95b 1857
396482e1 1858 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1859
6224f72b 1860#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1861 if (LOCAL_PATCH_COUNT > 0) {
1862 int i;
396482e1 1863 sv_catpvs(opts_prog,
7edfd0ef
NC
1864 "\" Locally applied patches:\\n\",");
1865 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1866 if (PL_localpatches[i])
1867 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1868 0, PL_localpatches[i], 0);
1869 }
6224f72b 1870 }
6224f72b 1871#endif
7edfd0ef
NC
1872 Perl_sv_catpvf(aTHX_ opts_prog,
1873 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1874#ifdef __DATE__
1875# ifdef __TIME__
7edfd0ef
NC
1876 Perl_sv_catpvf(aTHX_ opts_prog,
1877 ",\" Compiled at %s %s\\n\"",__DATE__,
1878 __TIME__);
6224f72b 1879# else
7edfd0ef
NC
1880 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1881 __DATE__);
6224f72b
GS
1882# endif
1883#endif
396482e1 1884 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1885 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1886 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1887#ifdef __CYGWIN__
396482e1 1888 sv_catpvs(opts_prog,
7edfd0ef 1889 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1890#endif
396482e1 1891 sv_catpvs(opts_prog,
7edfd0ef
NC
1892 "print \" \\%ENV:\\n @env\\n\" if @env;"
1893 "print \" \\@INC:\\n @INC\\n\";");
1894 }
1895 else {
1896 ++s;
1897 opts_prog = Perl_newSVpvf(aTHX_
1898 "Config::config_vars(qw%c%s%c)",
1899 0, s, 0);
1900 s += strlen(s);
1901 }
1902 av_push(PL_preambleav, opts_prog);
1903 /* don't look for script or read stdin */
1904 scriptname = BIT_BUCKET;
1905 goto reswitch;
6224f72b 1906 }
6224f72b 1907 case 'x':
3280af22 1908 PL_doextract = TRUE;
6224f72b
GS
1909 s++;
1910 if (*s)
f4c556ac 1911 cddir = s;
6224f72b
GS
1912 break;
1913 case 0:
1914 break;
1915 case '-':
1916 if (!*++s || isSPACE(*s)) {
1917 argc--,argv++;
1918 goto switch_end;
1919 }
1920 /* catch use of gnu style long options */
1921 if (strEQ(s, "version")) {
dd374669 1922 s = (char *)"v";
6224f72b
GS
1923 goto reswitch;
1924 }
1925 if (strEQ(s, "help")) {
dd374669 1926 s = (char *)"h";
6224f72b
GS
1927 goto reswitch;
1928 }
1929 s--;
1930 /* FALL THROUGH */
1931 default:
cea2e8a9 1932 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1933 }
1934 }
6224f72b 1935 switch_end:
54310121 1936
f675dbe5
CB
1937 if (
1938#ifndef SECURE_INTERNAL_GETENV
1939 !PL_tainting &&
1940#endif
cf756827 1941 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1942 {
e1ec3a88 1943 const char *popt = s;
74288ac8
GS
1944 while (isSPACE(*s))
1945 s++;
317ea90d 1946 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1947 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1948 PL_tainting = TRUE;
317ea90d
MS
1949 PL_taint_warn = FALSE;
1950 }
74288ac8 1951 else {
bd61b366 1952 char *popt_copy = NULL;
74288ac8 1953 while (s && *s) {
4ea8f8fb 1954 char *d;
74288ac8
GS
1955 while (isSPACE(*s))
1956 s++;
1957 if (*s == '-') {
1958 s++;
1959 if (isSPACE(*s))
1960 continue;
1961 }
4ea8f8fb 1962 d = s;
74288ac8
GS
1963 if (!*s)
1964 break;
e4af53b0 1965 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 1966 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1967 while (++s && *s) {
1968 if (isSPACE(*s)) {
cf756827
GS
1969 if (!popt_copy) {
1970 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1971 s = popt_copy + (s - popt);
1972 d = popt_copy + (d - popt);
1973 }
4ea8f8fb
MS
1974 *s++ = '\0';
1975 break;
1976 }
1977 }
1c4db469 1978 if (*d == 't') {
317ea90d
MS
1979 if( !PL_tainting ) {
1980 PL_taint_warn = TRUE;
1981 PL_tainting = TRUE;
1982 }
1c4db469 1983 } else {
97bd5664 1984 moreswitches(d);
1c4db469 1985 }
6224f72b 1986 }
6224f72b
GS
1987 }
1988 }
a0d0e21e 1989
20ef40cf
GA
1990#ifdef USE_SITECUSTOMIZE
1991 if (!minus_f) {
1992 if (!PL_preambleav)
1993 PL_preambleav = newAV();
1994 av_unshift(PL_preambleav, 1);
1995 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1996 }
1997#endif
1998
317ea90d
MS
1999 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
2000 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
2001 }
2002
6224f72b
GS
2003 if (!scriptname)
2004 scriptname = argv[0];
3280af22 2005 if (PL_e_script) {
6224f72b
GS
2006 argc++,argv--;
2007 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2008 }
bd61b366 2009 else if (scriptname == NULL) {
6224f72b
GS
2010#ifdef MSDOS
2011 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2012 moreswitches("h");
6224f72b
GS
2013#endif
2014 scriptname = "-";
2015 }
2016
b7975bdd
NC
2017 /* Set $^X early so that it can be used for relocatable paths in @INC */
2018 assert (!PL_tainted);
2019 TAINT;
2020 S_set_caret_X(aTHX);
2021 TAINT_NOT;
6224f72b
GS
2022 init_perllib();
2023
a52eba0e
NC
2024 {
2025 int suidscript;
2026 const int fdscript
2027 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2028
a52eba0e 2029 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2030
64ca3a65 2031#ifndef PERL_MICRO
a52eba0e
NC
2032# if defined(SIGCHLD) || defined(SIGCLD)
2033 {
2034# ifndef SIGCHLD
2035# define SIGCHLD SIGCLD
2036# endif
2037 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2038 if (sigstate == (Sighandler_t) SIG_IGN) {
2039 if (ckWARN(WARN_SIGNAL))
2040 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2041 "Can't ignore signal CHLD, forcing to default");
2042 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2043 }
0b5b802d 2044 }
a52eba0e 2045# endif
64ca3a65 2046#endif
0b5b802d 2047
a52eba0e 2048 if (PL_doextract
bf4acbe4 2049#ifdef MACOS_TRADITIONAL
a52eba0e 2050 || gMacPerl_AlwaysExtract
bf4acbe4 2051#endif
a52eba0e 2052 ) {
faef540c
NC
2053
2054 /* This will croak if suidscript is >= 0, as -x cannot be used with
2055 setuid scripts. */
2056 forbid_setid('x', suidscript);
2057 /* Hence you can't get here if suidscript >= 0 */
2058
2059 find_beginning();
a52eba0e
NC
2060 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2061 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2062 }
f4c556ac 2063 }
6224f72b 2064
561b68a9 2065 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2066 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2067 CvUNIQUE_on(PL_compcv);
2068
dd2155a4 2069 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 2070#ifdef USE_5005THREADS
533c011a 2071 CvOWNER(PL_compcv) = 0;
a02a5408 2072 Newx(CvMUTEXP(PL_compcv), 1, perl_mutex);
533c011a 2073 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 2074#endif /* USE_5005THREADS */
6224f72b 2075
0c4f7ff0 2076 boot_core_PerlIO();
6224f72b 2077 boot_core_UNIVERSAL();
09bef843 2078 boot_core_xsutils();
6224f72b
GS
2079
2080 if (xsinit)
acfe0abc 2081 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2082#ifndef PERL_MICRO
d0d72822 2083#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2084 init_os_extras();
6224f72b 2085#endif
64ca3a65 2086#endif
6224f72b 2087
29209bc5 2088#ifdef USE_SOCKS
1b9c9cf5
DH
2089# ifdef HAS_SOCKS5_INIT
2090 socks5_init(argv[0]);
2091# else
29209bc5 2092 SOCKSinit(argv[0]);
1b9c9cf5 2093# endif
ac27b0f5 2094#endif
29209bc5 2095
6224f72b
GS
2096 init_predump_symbols();
2097 /* init_postdump_symbols not currently designed to be called */
2098 /* more than once (ENV isn't cleared first, for example) */
2099 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2100 if (!PL_do_undump)
6224f72b
GS
2101 init_postdump_symbols(argc,argv,env);
2102
27da23d5
JH
2103 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2104 * or explicitly in some platforms.
085a54d9 2105 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2106 * look like the user wants to use UTF-8. */
a0fd4948 2107#if defined(__SYMBIAN32__)
27da23d5
JH
2108 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2109#endif
06e66572
JH
2110 if (PL_unicode) {
2111 /* Requires init_predump_symbols(). */
a05d7ebb 2112 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2113 IO* io;
2114 PerlIO* fp;
2115 SV* sv;
2116
a05d7ebb 2117 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2118 * and the default open disciplines. */
a05d7ebb
JH
2119 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2120 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2121 (fp = IoIFP(io)))
2122 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2123 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2124 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2125 (fp = IoOFP(io)))
2126 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2127 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2128 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2129 (fp = IoOFP(io)))
2130 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2131 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2132 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2133 SVt_PV)))) {
a05d7ebb
JH
2134 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2135 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2136 if (in) {
2137 if (out)
2138 sv_setpvn(sv, ":utf8\0:utf8", 11);
2139 else
2140 sv_setpvn(sv, ":utf8\0", 6);
2141 }
2142 else if (out)
2143 sv_setpvn(sv, "\0:utf8", 6);
2144 SvSETMAGIC(sv);
2145 }
b310b053
JH
2146 }
2147 }
2148
4ffa73a3
JH
2149 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2150 if (strEQ(s, "unsafe"))
2151 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2152 else if (strEQ(s, "safe"))
2153 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2154 else
2155 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2156 }
2157
6224f72b
GS
2158 init_lexer();
2159
2160 /* now parse the script */
2161
93189314 2162 SETERRNO(0,SS_NORMAL);
3280af22 2163 PL_error_count = 0;
bf4acbe4
GS
2164#ifdef MACOS_TRADITIONAL
2165 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2166 if (PL_minus_c)
2167 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2168 else {
2169 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2170 MacPerl_MPWFileName(PL_origfilename));
2171 }
2172 }
2173#else
3280af22
NIS
2174 if (yyparse() || PL_error_count) {
2175 if (PL_minus_c)
cea2e8a9 2176 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2177 else {
cea2e8a9 2178 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2179 PL_origfilename);
6224f72b
GS
2180 }
2181 }
bf4acbe4 2182#endif
57843af0 2183 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2184 PL_curstash = PL_defstash;
2185 PL_preprocess = FALSE;
2186 if (PL_e_script) {
2187 SvREFCNT_dec(PL_e_script);
a0714e2c 2188 PL_e_script = NULL;
6224f72b
GS
2189 }
2190
3280af22 2191 if (PL_do_undump)
6224f72b
GS
2192 my_unexec();
2193
57843af0
GS
2194 if (isWARN_ONCE) {
2195 SAVECOPFILE(PL_curcop);
2196 SAVECOPLINE(PL_curcop);
3280af22 2197 gv_check(PL_defstash);
57843af0 2198 }
6224f72b
GS
2199
2200 LEAVE;
2201 FREETMPS;
2202
2203#ifdef MYMALLOC
2204 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2205 dump_mstats("after compilation:");
2206#endif
2207
2208 ENTER;
3280af22 2209 PL_restartop = 0;
312caa8e 2210 return NULL;
6224f72b
GS
2211}
2212
954c1994
GS
2213/*
2214=for apidoc perl_run
2215
2216Tells a Perl interpreter to run. See L<perlembed>.
2217
2218=cut
2219*/
2220
6224f72b 2221int
0cb96387 2222perl_run(pTHXx)
6224f72b 2223{
97aff369 2224 dVAR;
6224f72b 2225 I32 oldscope;
14dd3ad8 2226 int ret = 0;
db36c5a1 2227 dJMPENV;
6224f72b 2228
9d4ba2ae
AL
2229 PERL_UNUSED_ARG(my_perl);
2230
3280af22 2231 oldscope = PL_scopestack_ix;
96e176bf
CL
2232#ifdef VMS
2233 VMSISH_HUSHED = 0;
2234#endif
6224f72b 2235
14dd3ad8 2236 JMPENV_PUSH(ret);
6224f72b
GS
2237 switch (ret) {
2238 case 1:
2239 cxstack_ix = -1; /* start context stack again */
312caa8e 2240 goto redo_body;
14dd3ad8 2241 case 0: /* normal completion */
14dd3ad8
GS
2242 redo_body:
2243 run_body(oldscope);
14dd3ad8
GS
2244 /* FALL THROUGH */
2245 case 2: /* my_exit() */
3280af22 2246 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2247 LEAVE;
2248 FREETMPS;
3280af22 2249 PL_curstash = PL_defstash;
3a1ee7e8 2250 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2251 PL_endav && !PL_minus_c)
2252 call_list(oldscope, PL_endav);
6224f72b
GS
2253#ifdef MYMALLOC
2254 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2255 dump_mstats("after execution: ");
2256#endif
37038d91 2257 ret = STATUS_EXIT;
14dd3ad8 2258 break;
6224f72b 2259 case 3:
312caa8e
CS
2260 if (PL_restartop) {
2261 POPSTACK_TO(PL_mainstack);
2262 goto redo_body;
6224f72b 2263 }
bf49b057 2264 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2265 FREETMPS;
14dd3ad8
GS
2266 ret = 1;
2267 break;
6224f72b
GS
2268 }
2269
14dd3ad8
GS
2270 JMPENV_POP;
2271 return ret;
312caa8e
CS
2272}
2273
14dd3ad8 2274
dd374669 2275STATIC void
14dd3ad8
GS
2276S_run_body(pTHX_ I32 oldscope)
2277{
97aff369 2278 dVAR;
6224f72b 2279 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2280 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2281
3280af22 2282 if (!PL_restartop) {
6224f72b 2283 DEBUG_x(dump_all());
cf2782cd 2284#ifdef DEBUGGING
ecae49c0
NC
2285 if (!DEBUG_q_TEST)
2286 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2287#endif
b900a521
JH
2288 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2289 PTR2UV(thr)));
6224f72b 2290
3280af22 2291 if (PL_minus_c) {
bf4acbe4 2292#ifdef MACOS_TRADITIONAL
e69a2255
JH
2293 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2294 (gMacPerl_ErrorFormat ? "# " : ""),
2295 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2296#else
bf49b057 2297 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2298#endif
6224f72b
GS
2299 my_exit(0);
2300 }
3280af22 2301 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2302 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2303 if (PL_initav)
2304 call_list(oldscope, PL_initav);
6224f72b
GS
2305 }
2306
2307 /* do it */
2308
3280af22 2309 if (PL_restartop) {
533c011a 2310 PL_op = PL_restartop;
3280af22 2311 PL_restartop = 0;
cea2e8a9 2312 CALLRUNOPS(aTHX);
6224f72b 2313 }
3280af22
NIS
2314 else if (PL_main_start) {
2315 CvDEPTH(PL_main_cv) = 1;
533c011a 2316 PL_op = PL_main_start;
cea2e8a9 2317 CALLRUNOPS(aTHX);
6224f72b 2318 }
f6b3007c
JH
2319 my_exit(0);
2320 /* NOTREACHED */
6224f72b
GS
2321}
2322
954c1994 2323/*
ccfc67b7
JH
2324=head1 SV Manipulation Functions
2325
954c1994
GS
2326=for apidoc p||get_sv
2327
2328Returns the SV of the specified Perl scalar. If C<create> is set and the
2329Perl variable does not exist then it will be created. If C<create> is not
2330set and the variable does not exist then NULL is returned.
2331
2332=cut
2333*/
2334
6224f72b 2335SV*
864dbfa3 2336Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2337{
2338 GV *gv;
4d1ff10f 2339#ifdef USE_5005THREADS
6224f72b
GS
2340 if (name[1] == '\0' && !isALPHA(name[0])) {
2341 PADOFFSET tmp = find_threadsv(name);
411caa50 2342 if (tmp != NOT_IN_PAD)
6224f72b 2343 return THREADSV(tmp);
6224f72b 2344 }
4d1ff10f 2345#endif /* USE_5005THREADS */
6224f72b
GS
2346 gv = gv_fetchpv(name, create, SVt_PV);
2347 if (gv)
2348 return GvSV(gv);
a0714e2c 2349 return NULL;
6224f72b
GS
2350}
2351
954c1994 2352/*
ccfc67b7
JH
2353=head1 Array Manipulation Functions
2354
954c1994
GS
2355=for apidoc p||get_av
2356
2357Returns the AV of the specified Perl array. If C<create> is set and the
2358Perl variable does not exist then it will be created. If C<create> is not
2359set and the variable does not exist then NULL is returned.
2360
2361=cut
2362*/
2363
6224f72b 2364AV*
864dbfa3 2365Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2366{
c4420975 2367 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2368 if (create)
2369 return GvAVn(gv);
2370 if (gv)
2371 return GvAV(gv);
7d49f689 2372 return NULL;
6224f72b
GS
2373}
2374
954c1994 2375/*
ccfc67b7
JH
2376=head1 Hash Manipulation Functions
2377
954c1994
GS
2378=for apidoc p||get_hv
2379
2380Returns the HV of the specified Perl hash. If C<create> is set and the
2381Perl variable does not exist then it will be created. If C<create> is not
2382set and the variable does not exist then NULL is returned.
2383
2384=cut
2385*/
2386
6224f72b 2387HV*
864dbfa3 2388Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2389{
890ce7af 2390 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2391 if (create)
2392 return GvHVn(gv);
2393 if (gv)
2394 return GvHV(gv);
5c284bb0 2395 return NULL;
a0d0e21e
LW
2396}
2397
954c1994 2398/*
ccfc67b7
JH
2399=head1 CV Manipulation Functions
2400
954c1994
GS
2401=for apidoc p||get_cv
2402
2403Returns the CV of the specified Perl subroutine. If C<create> is set and
2404the Perl subroutine does not exist then it will be declared (which has the
2405same effect as saying C<sub name;>). If C<create> is not set and the
2406subroutine does not exist then NULL is returned.
2407
2408=cut
2409*/
2410
a0d0e21e 2411CV*
864dbfa3 2412Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2413{
c4420975 2414 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2415 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2416 /* XXX this is probably not what they think they're getting.
2417 * It has the same effect as "sub name;", i.e. just a forward
2418 * declaration! */
8ebc5c01 2419 if (create && !GvCVu(gv))
774d564b 2420 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2421 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 2422 Nullop,
a0d0e21e
LW
2423 Nullop);
2424 if (gv)
8ebc5c01 2425 return GvCVu(gv);
601f1833 2426 return NULL;
a0d0e21e
LW
2427}
2428
79072805
LW
2429/* Be sure to refetch the stack pointer after calling these routines. */
2430
954c1994 2431/*
ccfc67b7
JH
2432
2433=head1 Callback Functions
2434
954c1994
GS
2435=for apidoc p||call_argv
2436
2437Performs a callback to the specified Perl sub. See L<perlcall>.
2438
2439=cut
2440*/
2441
a0d0e21e 2442I32
8f42b153 2443Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2444
8ac85365
NIS
2445 /* See G_* flags in cop.h */
2446 /* null terminated arg list */
8990e307 2447{
97aff369 2448 dVAR;
a0d0e21e 2449 dSP;
8990e307 2450
924508f0 2451 PUSHMARK(SP);
a0d0e21e 2452 if (argv) {
8990e307 2453 while (*argv) {
a0d0e21e 2454 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2455 argv++;
2456 }
a0d0e21e 2457 PUTBACK;
8990e307 2458 }
864dbfa3 2459 return call_pv(sub_name, flags);
8990e307
LW
2460}
2461
954c1994
GS
2462/*
2463=for apidoc p||call_pv
2464
2465Performs a callback to the specified Perl sub. See L<perlcall>.
2466
2467=cut
2468*/
2469
a0d0e21e 2470I32
864dbfa3 2471Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2472 /* name of the subroutine */
2473 /* See G_* flags in cop.h */
a0d0e21e 2474{
864dbfa3 2475 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2476}
2477
954c1994
GS
2478/*
2479=for apidoc p||call_method
2480
2481Performs a callback to the specified Perl method. The blessed object must
2482be on the stack. See L<perlcall>.
2483
2484=cut
2485*/
2486
a0d0e21e 2487I32
864dbfa3 2488Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2489 /* name of the subroutine */
2490 /* See G_* flags in cop.h */
a0d0e21e 2491{
968b3946 2492 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2493}
2494
2495/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2496/*
2497=for apidoc p||call_sv
2498
2499Performs a callback to the Perl sub whose name is in the SV. See
2500L<perlcall>.
2501
2502=cut
2503*/
2504
a0d0e21e 2505I32
864dbfa3 2506Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2507 /* See G_* flags in cop.h */
a0d0e21e 2508{
27da23d5 2509 dVAR; dSP;
a0d0e21e 2510 LOGOP myop; /* fake syntax tree node */
968b3946 2511 UNOP method_op;
aa689395 2512 I32 oldmark;
13689cfe 2513 volatile I32 retval = 0;
a0d0e21e 2514 I32 oldscope;
54310121 2515 bool oldcatch = CATCH_GET;
6224f72b 2516 int ret;
c4420975 2517 OP* const oldop = PL_op;
db36c5a1 2518 dJMPENV;
1e422769 2519
a0d0e21e
LW
2520 if (flags & G_DISCARD) {
2521 ENTER;
2522 SAVETMPS;
2523 }
2524
aa689395 2525 Zero(&myop, 1, LOGOP);
54310121 2526 myop.op_next = Nullop;
f51d4af5 2527 if (!(flags & G_NOARGS))
aa689395 2528 myop.op_flags |= OPf_STACKED;
54310121 2529 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2530 (flags & G_ARRAY) ? OPf_WANT_LIST :
2531 OPf_WANT_SCALAR);
462e5cf6 2532 SAVEOP();
533c011a 2533 PL_op = (OP*)&myop;
aa689395 2534
3280af22
NIS
2535 EXTEND(PL_stack_sp, 1);
2536 *++PL_stack_sp = sv;
aa689395 2537 oldmark = TOPMARK;
3280af22 2538 oldscope = PL_scopestack_ix;
a0d0e21e 2539
3280af22 2540 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2541 /* Handle first BEGIN of -d. */
3280af22 2542 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 2543 /* Try harder, since this may have been a sighandler, thus
2544 * curstash may be meaningless. */
3280af22 2545 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2546 && !(flags & G_NODEBUG))
533c011a 2547 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2548
968b3946
GS
2549 if (flags & G_METHOD) {
2550 Zero(&method_op, 1, UNOP);
2551 method_op.op_next = PL_op;
2552 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2553 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2554 PL_op = (OP*)&method_op;
968b3946
GS
2555 }
2556
312caa8e 2557 if (!(flags & G_EVAL)) {
0cdb2077 2558 CATCH_SET(TRUE);
14dd3ad8 2559 call_body((OP*)&myop, FALSE);
312caa8e 2560 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2561 CATCH_SET(oldcatch);
312caa8e
CS
2562 }
2563 else {
d78bda3d 2564 myop.op_other = (OP*)&myop;
3280af22 2565 PL_markstack_ptr--;
4633a7c4
LW
2566 /* we're trying to emulate pp_entertry() here */
2567 {
c09156bb 2568 register PERL_CONTEXT *cx;
f54cb97a 2569 const I32 gimme = GIMME_V;
ac27b0f5 2570
4633a7c4
LW
2571 ENTER;
2572 SAVETMPS;
ac27b0f5 2573
1d76a5c3 2574 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2575 PUSHEVAL(cx, 0, 0);
533c011a 2576 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2577
faef0170 2578 PL_in_eval = EVAL_INEVAL;
4633a7c4 2579 if (flags & G_KEEPERR)
faef0170 2580 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2581 else
c69006e4 2582 sv_setpvn(ERRSV,"",0);
4633a7c4 2583 }
3280af22 2584 PL_markstack_ptr++;
a0d0e21e 2585
14dd3ad8 2586 JMPENV_PUSH(ret);
6224f72b
GS
2587 switch (ret) {
2588 case 0:
14dd3ad8
GS
2589 redo_body:
2590 call_body((OP*)&myop, FALSE);
312caa8e
CS
2591 retval = PL_stack_sp - (PL_stack_base + oldmark);
2592 if (!(flags & G_KEEPERR))
c69006e4 2593 sv_setpvn(ERRSV,"",0);
a0d0e21e 2594 break;
6224f72b 2595 case 1:
f86702cc 2596 STATUS_ALL_FAILURE;
a0d0e21e 2597 /* FALL THROUGH */
6224f72b 2598 case 2:
a0d0e21e 2599 /* my_exit() was called */
3280af22 2600 PL_curstash = PL_defstash;
a0d0e21e 2601 FREETMPS;
14dd3ad8 2602 JMPENV_POP;
cc3604b1 2603 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2604 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2605 my_exit_jump();
a0d0e21e 2606 /* NOTREACHED */
6224f72b 2607 case 3:
3280af22 2608 if (PL_restartop) {
533c011a 2609 PL_op = PL_restartop;
3280af22 2610 PL_restartop = 0;
312caa8e 2611 goto redo_body;
a0d0e21e 2612 }
3280af22 2613 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2614 if (flags & G_ARRAY)
2615 retval = 0;
2616 else {
2617 retval = 1;
3280af22 2618 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2619 }
312caa8e 2620 break;
a0d0e21e 2621 }
a0d0e21e 2622
3280af22 2623 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2624 SV **newsp;
2625 PMOP *newpm;
2626 I32 gimme;
c09156bb 2627 register PERL_CONTEXT *cx;
a0a2876f
LW
2628 I32 optype;
2629
2630 POPBLOCK(cx,newpm);
2631 POPEVAL(cx);
3280af22 2632 PL_curpm = newpm;
a0a2876f 2633 LEAVE;
9d4ba2ae
AL
2634 PERL_UNUSED_VAR(newsp);
2635 PERL_UNUSED_VAR(gimme);
2636 PERL_UNUSED_VAR(optype);
a0d0e21e 2637 }
14dd3ad8 2638 JMPENV_POP;
a0d0e21e 2639 }
1e422769 2640
a0d0e21e 2641 if (flags & G_DISCARD) {
3280af22 2642 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2643 retval = 0;
2644 FREETMPS;
2645 LEAVE;
2646 }
533c011a 2647 PL_op = oldop;
a0d0e21e
LW
2648 return retval;
2649}
2650
312caa8e 2651STATIC void
dd374669 2652S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2653{
97aff369 2654 dVAR;
312caa8e
CS
2655 if (PL_op == myop) {
2656 if (is_eval)
f807eda9 2657 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2658 else
f807eda9 2659 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2660 }
2661 if (PL_op)
cea2e8a9 2662 CALLRUNOPS(aTHX);
312caa8e
CS
2663}
2664
6e72f9df 2665/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2666
954c1994
GS
2667/*
2668=for apidoc p||eval_sv
2669
2670Tells Perl to C<eval> the string in the SV.
2671
2672=cut
2673*/
2674
a0d0e21e 2675I32
864dbfa3 2676Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2677
8ac85365 2678 /* See G_* flags in cop.h */
a0d0e21e 2679{
97aff369 2680 dVAR;
924508f0 2681 dSP;
a0d0e21e 2682 UNOP myop; /* fake syntax tree node */
8fa7f367 2683 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2684 volatile I32 retval = 0;
6224f72b 2685 int ret;
c4420975 2686 OP* const oldop = PL_op;
db36c5a1 2687 dJMPENV;
84902520 2688
4633a7c4
LW
2689 if (flags & G_DISCARD) {
2690 ENTER;
2691 SAVETMPS;
2692 }
2693
462e5cf6 2694 SAVEOP();
533c011a
NIS
2695 PL_op = (OP*)&myop;
2696 Zero(PL_op, 1, UNOP);
3280af22
NIS
2697 EXTEND(PL_stack_sp, 1);
2698 *++PL_stack_sp = sv;
79072805 2699
4633a7c4
LW
2700 if (!(flags & G_NOARGS))
2701 myop.op_flags = OPf_STACKED;
79072805 2702 myop.op_next = Nullop;
6e72f9df 2703 myop.op_type = OP_ENTEREVAL;
54310121 2704 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2705 (flags & G_ARRAY) ? OPf_WANT_LIST :
2706 OPf_WANT_SCALAR);
6e72f9df 2707 if (flags & G_KEEPERR)
2708 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2709
dedbcade
DM
2710 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2711 * before a PUSHEVAL, which corrupts the stack after a croak */
2712 TAINT_PROPER("eval_sv()");
2713
14dd3ad8 2714 JMPENV_PUSH(ret);
6224f72b
GS
2715 switch (ret) {
2716 case 0:
14dd3ad8
GS
2717 redo_body:
2718 call_body((OP*)&myop,TRUE);
312caa8e
CS
2719 retval = PL_stack_sp - (PL_stack_base + oldmark);
2720 if (!(flags & G_KEEPERR))
c69006e4 2721 sv_setpvn(ERRSV,"",0);
4633a7c4 2722 break;
6224f72b 2723 case 1:
f86702cc 2724 STATUS_ALL_FAILURE;
4633a7c4 2725 /* FALL THROUGH */
6224f72b 2726 case 2:
4633a7c4 2727 /* my_exit() was called */
3280af22 2728 PL_curstash = PL_defstash;
4633a7c4 2729 FREETMPS;
14dd3ad8 2730 JMPENV_POP;
cc3604b1 2731 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2732 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2733 my_exit_jump();
4633a7c4 2734 /* NOTREACHED */
6224f72b 2735 case 3:
3280af22 2736 if (PL_restartop) {
533c011a 2737 PL_op = PL_restartop;
3280af22 2738 PL_restartop = 0;
312caa8e 2739 goto redo_body;
4633a7c4 2740 }
3280af22 2741 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2742 if (flags & G_ARRAY)
2743 retval = 0;
2744 else {
2745 retval = 1;
3280af22 2746 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2747 }
312caa8e 2748 break;
4633a7c4
LW
2749 }
2750
14dd3ad8 2751 JMPENV_POP;
4633a7c4 2752 if (flags & G_DISCARD) {
3280af22 2753 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2754 retval = 0;
2755 FREETMPS;
2756 LEAVE;
2757 }
533c011a 2758 PL_op = oldop;
4633a7c4
LW
2759 return retval;
2760}
2761
954c1994
GS
2762/*
2763=for apidoc p||eval_pv
2764
2765Tells Perl to C<eval> the given string and return an SV* result.
2766
2767=cut
2768*/
2769
137443ea 2770SV*
864dbfa3 2771Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2772{
97aff369 2773 dVAR;
137443ea 2774 dSP;
2775 SV* sv = newSVpv(p, 0);
2776
864dbfa3 2777 eval_sv(sv, G_SCALAR);
137443ea 2778 SvREFCNT_dec(sv);
2779
2780 SPAGAIN;
2781 sv = POPs;
2782 PUTBACK;
2783
2d8e6c8d 2784 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2785 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2786 }
137443ea 2787
2788 return sv;
2789}
2790
4633a7c4
LW
2791/* Require a module. */
2792
954c1994 2793/*
ccfc67b7
JH
2794=head1 Embedding Functions
2795
954c1994
GS
2796=for apidoc p||require_pv
2797
7d3fb230
BS
2798Tells Perl to C<require> the file named by the string argument. It is
2799analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2800implemented that way; consider using load_module instead.
954c1994 2801
7d3fb230 2802=cut */
954c1994 2803
4633a7c4 2804void
864dbfa3 2805Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2806{
97aff369 2807 dVAR;
d3acc0f7 2808 dSP;
97aff369 2809 SV* sv;
e788e7d3 2810 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2811 PUTBACK;
be41e5d9
NC
2812 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2813 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2814 SPAGAIN;
2815 POPSTACK;
79072805
LW
2816}
2817
79072805 2818void
e1ec3a88 2819Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2820{
71315bf2 2821 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2822
c4420975 2823 if (gv)
14befaf4 2824 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2825}
2826
76e3520e 2827STATIC void
e1ec3a88 2828S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2829{
ab821d7f 2830 /* This message really ought to be max 23 lines.
75c72d73 2831 * Removed -h because the user already knows that option. Others? */
fb73857a 2832
27da23d5 2833 static const char * const usage_msg[] = {
aefc56c5
SF
2834"-0[octal] specify record separator (\\0, if no argument)",
2835"-A[mod][=pattern] activate all/given assertions",
2836"-a autosplit mode with -n or -p (splits $_ into @F)",
2837"-C[number/list] enables the listed Unicode features",
2838"-c check syntax only (runs BEGIN and CHECK blocks)",
2839"-d[:debugger] run program under debugger",
2840"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2841"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2842"-E program like -e, but enables all optional features",
aefc56c5 2843"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2844"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2845"-i[extension] edit <> files in place (makes backup if extension supplied)",
2846"-Idirectory specify @INC/#include directory (several -I's allowed)",
2847"-l[octal] enable line ending processing, specifies line terminator",
2848"-[mM][-]module execute \"use/no module...\" before executing program",
2849"-n assume \"while (<>) { ... }\" loop around program",
2850"-p assume loop like -n but print line also, like sed",
2851"-P run program through C preprocessor before compilation",
2852"-s enable rudimentary parsing for switches after programfile",
2853"-S look for programfile using PATH environment variable",
2854"-t enable tainting warnings",
2855"-T enable tainting checks",
2856"-u dump core after parsing program",
2857"-U allow unsafe operations",
2858"-v print version, subversion (includes VERY IMPORTANT perl info)",
2859"-V[:variable] print configuration summary (or a single Config.pm variable)",
2860"-w enable many useful warnings (RECOMMENDED)",
2861"-W enable all warnings",
2862"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2863"-X disable all warnings",
fb73857a 2864"\n",
2865NULL
2866};
27da23d5 2867 const char * const *p = usage_msg;
fb73857a 2868
b0e47665
GS
2869 PerlIO_printf(PerlIO_stdout(),
2870 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2871 name);
fb73857a 2872 while (*p)
b0e47665 2873 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2874}
2875
b4ab917c
DM
2876/* convert a string of -D options (or digits) into an int.
2877 * sets *s to point to the char after the options */
2878
2879#ifdef DEBUGGING
2880int
e1ec3a88 2881Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2882{
27da23d5 2883 static const char * const usage_msgd[] = {
e6e64d9b
JC
2884 " Debugging flag values: (see also -d)",
2885 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2886 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2887 " l Context (loop) stack processing",
2888 " t Trace execution",
2889 " o Method and overloading resolution",
2890 " c String/numeric conversions",
2891 " P Print profiling info, preprocessor command for -P, source file input state",
2892 " m Memory allocation",
2893 " f Format processing",
2894 " r Regular expression parsing and execution",
2895 " x Syntax tree dump",
3679267a 2896 " u Tainting checks",
e6e64d9b
JC
2897 " H Hash dump -- usurps values()",
2898 " X Scratchpad allocation",
2899 " D Cleaning up",
2900 " S Thread synchronization",
2901 " T Tokenising",
2902 " R Include reference counts of dumped variables (eg when using -Ds)",
2903 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2904 " v Verbose: use in conjunction with other flags",
2905 " C Copy On Write",
2906 " A Consistency checks on internal structures",
3679267a 2907 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2908 NULL
2909 };
b4ab917c
DM
2910 int i = 0;
2911 if (isALPHA(**s)) {
2912 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2913 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2914
2915 for (; isALNUM(**s); (*s)++) {
c4420975 2916 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2917 if (d)
2918 i |= 1 << (d - debopts);
2919 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2920 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2921 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2922 }
2923 }
e6e64d9b 2924 else if (isDIGIT(**s)) {
b4ab917c
DM
2925 i = atoi(*s);
2926 for (; isALNUM(**s); (*s)++) ;
2927 }
ddcf8bc1 2928 else if (givehelp) {
06e869a4 2929 const char *const *p = usage_msgd;
e6e64d9b
JC
2930 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2931 }
b4ab917c
DM
2932# ifdef EBCDIC
2933 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2934 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2935 "-Dp not implemented on this platform\n");
2936# endif
2937 return i;
2938}
2939#endif
2940
79072805
LW
2941/* This routine handles any switches that can be given during run */
2942
2943char *
97bd5664 2944Perl_moreswitches(pTHX_ char *s)
79072805 2945{
27da23d5 2946 dVAR;
84c133a0 2947 UV rschar;
79072805
LW
2948
2949 switch (*s) {
2950 case '0':
a863c7d1 2951 {
f2095865 2952 I32 flags = 0;
a3b680e6 2953 STRLEN numlen;
f2095865
JH
2954
2955 SvREFCNT_dec(PL_rs);
2956 if (s[1] == 'x' && s[2]) {
a3b680e6 2957 const char *e = s+=2;
f2095865
JH
2958 U8 *tmps;
2959
a3b680e6
AL
2960 while (*e)
2961 e++;
f2095865
JH
2962 numlen = e - s;
2963 flags = PERL_SCAN_SILENT_ILLDIGIT;
2964 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2965 if (s + numlen < e) {
2966 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2967 numlen = 0;
2968 s--;
2969 }
396482e1 2970 PL_rs = newSVpvs("");
c5661c80 2971 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2972 tmps = (U8*)SvPVX(PL_rs);
2973 uvchr_to_utf8(tmps, rschar);
2974 SvCUR_set(PL_rs, UNISKIP(rschar));
2975 SvUTF8_on(PL_rs);
2976 }
2977 else {
2978 numlen = 4;
2979 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2980 if (rschar & ~((U8)~0))
2981 PL_rs = &PL_sv_undef;
2982 else if (!rschar && numlen >= 2)
396482e1 2983 PL_rs = newSVpvs("");
f2095865
JH
2984 else {
2985 char ch = (char)rschar;
2986 PL_rs = newSVpvn(&ch, 1);
2987 }
2988 }
800633c3 2989 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 2990 return s + numlen;
a863c7d1 2991 }
46487f74 2992 case 'C':
a05d7ebb 2993 s++;
dd374669 2994 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 2995 return s;
2304df62 2996 case 'F':
3280af22 2997 PL_minus_F = TRUE;
ebce5377
RGS
2998 PL_splitstr = ++s;
2999 while (*s && !isSPACE(*s)) ++s;
3000 *s = '\0';
3001 PL_splitstr = savepv(PL_splitstr);
2304df62 3002 return s;
79072805 3003 case 'a':
3280af22 3004 PL_minus_a = TRUE;
79072805
LW
3005 s++;
3006 return s;
3007 case 'c':
3280af22 3008 PL_minus_c = TRUE;
79072805
LW
3009 s++;
3010 return s;
3011 case 'd':
97bd5664 3012 forbid_setid('d', -1);
4633a7c4 3013 s++;
2cbb2ee1
RGS
3014
3015 /* -dt indicates to the debugger that threads will be used */
3016 if (*s == 't' && !isALNUM(s[1])) {
3017 ++s;
3018 my_setenv("PERL5DB_THREADED", "1");
3019 }
3020
70c94a19
RR
3021 /* The following permits -d:Mod to accepts arguments following an =
3022 in the fashion that -MSome::Mod does. */
3023 if (*s == ':' || *s == '=') {
06b5626a 3024 const char *start;
396482e1 3025 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3026 start = ++s;
3027 /* We now allow -d:Module=Foo,Bar */
3028 while(isALNUM(*s) || *s==':') ++s;
3029 if (*s != '=')
3030 sv_catpv(sv, start);
3031 else {
3032 sv_catpvn(sv, start, s-start);
0c5a913d 3033 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
70c94a19 3034 }
4633a7c4 3035 s += strlen(s);
184f32ec 3036 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3037 }
ed094faf 3038 if (!PL_perldb) {
3280af22 3039 PL_perldb = PERLDB_ALL;
a0d0e21e 3040 init_debugger();
ed094faf 3041 }
79072805
LW
3042 return s;
3043 case 'D':
0453d815 3044 {
79072805 3045#ifdef DEBUGGING
97bd5664 3046 forbid_setid('D', -1);
b4ab917c 3047 s++;
dd374669 3048 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3049#else /* !DEBUGGING */
0453d815 3050 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3051 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3052 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3053 for (s++; isALNUM(*s); s++) ;
79072805 3054#endif
79072805 3055 return s;
0453d815 3056 }
4633a7c4 3057 case 'h':
ac27b0f5 3058 usage(PL_origargv[0]);
7ca617d0 3059 my_exit(0);
79072805 3060 case 'i':
43c5f42d 3061 Safefree(PL_inplace);
c030f24b
GH
3062#if defined(__CYGWIN__) /* do backup extension automagically */
3063 if (*(s+1) == '\0') {
c86a4f2e 3064 PL_inplace = savepvs(".bak");
c030f24b
GH
3065 return s+1;
3066 }
3067#endif /* __CYGWIN__ */
3280af22 3068 PL_inplace = savepv(s+1);
a6e20a40
AL
3069 for (s = PL_inplace; *s && !isSPACE(*s); s++)
3070 ;
7b8d334a 3071 if (*s) {
fb73857a 3072 *s++ = '\0';
7b8d334a
GS
3073 if (*s == '-') /* Additional switches on #! line. */
3074 s++;
3075 }
fb73857a 3076 return s;
4e49a025 3077 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3078 forbid_setid('I', -1);
fb73857a 3079 ++s;
3080 while (*s && isSPACE(*s))
3081 ++s;
3082 if (*s) {
774d564b 3083 char *e, *p;
0df16ed7
GS
3084 p = s;
3085 /* ignore trailing spaces (possibly followed by other switches) */
3086 do {
3087 for (e = p; *e && !isSPACE(*e); e++) ;
3088 p = e;
3089 while (isSPACE(*p))
3090 p++;
3091 } while (*p && *p != '-');
3092 e = savepvn(s, e-s);
88fe16b2 3093 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3094 Safefree(e);
3095 s = p;
3096 if (*s == '-')
3097 s++;
79072805
LW
3098 }
3099 else
a67e862a 3100 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3101 return s;
79072805 3102 case 'l':
3280af22 3103 PL_minus_l = TRUE;
79072805 3104 s++;
7889fe52
NIS
3105 if (PL_ors_sv) {
3106 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3107 PL_ors_sv = NULL;
7889fe52 3108 }
79072805 3109 if (isDIGIT(*s)) {
53305cf1 3110 I32 flags = 0;
a3b680e6 3111 STRLEN numlen;
396482e1 3112 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3113 numlen = 3 + (*s == '0');
3114 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3115 s += numlen;
3116 }
3117 else {
8bfdd7d9 3118 if (RsPARA(PL_rs)) {
396482e1 3119 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3120 }
3121 else {
8bfdd7d9 3122 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3123 }
79072805
LW
3124 }
3125 return s;
06492da6 3126 case 'A':
97bd5664 3127 forbid_setid('A', -1);
930366bd
RGS
3128 if (!PL_preambleav)
3129 PL_preambleav = newAV();
aefc56c5
SF
3130 s++;
3131 {
44f8325f 3132 char * const start = s;
396482e1 3133 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3134 while(isALNUM(*s) || *s == ':') ++s;
3135 if (s != start) {
396482e1 3136 sv_catpvs(sv, "::");
aefc56c5
SF
3137 sv_catpvn(sv, start, s-start);
3138 }
3139 if (*s == '=') {
0c5a913d 3140 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3141 s+=strlen(s);
3142 }
3143 else if (*s != '\0') {
551405c4 3144 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3145 }
06492da6 3146 av_push(PL_preambleav, sv);
aefc56c5 3147 return s;
06492da6 3148 }
1a30305b 3149 case 'M':
97bd5664 3150 forbid_setid('M', -1); /* XXX ? */
1a30305b 3151 /* FALL THROUGH */
3152 case 'm':
97bd5664 3153 forbid_setid('m', -1); /* XXX ? */
1a30305b 3154 if (*++s) {
a5f75d66 3155 char *start;
11343788 3156 SV *sv;
e1ec3a88 3157 const char *use = "use ";
a5f75d66 3158 /* -M-foo == 'no foo' */
d0043bd1
NC
3159 /* Leading space on " no " is deliberate, to make both
3160 possibilities the same length. */
3161 if (*s == '-') { use = " no "; ++s; }
3162 sv = newSVpvn(use,4);
a5f75d66 3163 start = s;
1a30305b 3164 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 3165 while(isALNUM(*s) || *s==':') ++s;
3166 if (*s != '=') {
11343788 3167 sv_catpv(sv, start);
c07a80fd 3168 if (*(start-1) == 'm') {
3169 if (*s != '\0')
cea2e8a9 3170 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3171 sv_catpvs( sv, " ()");
c07a80fd 3172 }
3173 } else {
6df41af2 3174 if (s == start)
be98fb35
GS
3175 Perl_croak(aTHX_ "Module name required with -%c option",
3176 s[-1]);
11343788 3177 sv_catpvn(sv, start, s-start);
396482e1
GA
3178 sv_catpvs(sv, " split(/,/,q");
3179 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3180 sv_catpv(sv, ++s);
396482e1 3181 sv_catpvs(sv, "\0)");
c07a80fd 3182 }
1a30305b 3183 s += strlen(s);
5c831c24 3184 if (!PL_preambleav)
3280af22
NIS
3185 PL_preambleav = newAV();
3186 av_push(PL_preambleav, sv);
1a30305b 3187 }
3188 else
9e81e6a1 3189 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3190 return s;
79072805 3191 case 'n':
3280af22 3192 PL_minus_n = TRUE;
79072805
LW
3193 s++;
3194 return s;
3195 case 'p':
3280af22 3196 PL_minus_p = TRUE;
79072805
LW
3197 s++;
3198 return s;
3199 case 's':
97bd5664 3200 forbid_setid('s', -1);
3280af22 3201 PL_doswitches = TRUE;
79072805
LW
3202 s++;
3203 return s;
6537fe72
MS
3204 case 't':
3205 if (!PL_tainting)
22f7c9c9 3206 TOO_LATE_FOR('t');
6537fe72
MS
3207 s++;
3208 return s;
463ee0b2 3209 case 'T':
3280af22 3210 if (!PL_tainting)
22f7c9c9 3211 TOO_LATE_FOR('T');
463ee0b2
LW
3212 s++;
3213 return s;
79072805 3214 case 'u':
bf4acbe4
GS
3215#ifdef MACOS_TRADITIONAL
3216 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3217#endif
3280af22 3218 PL_do_undump = TRUE;
79072805
LW
3219 s++;
3220 return s;
3221 case 'U':
3280af22 3222 PL_unsafe = TRUE;
79072805
LW
3223 s++;
3224 return s;
3225 case 'v':
d7aa5382 3226 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3227 upg_version(PL_patchlevel);
8e9464f1 3228#if !defined(DGUX)
b0e47665 3229 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3230 Perl_form(aTHX_ "\nThis is perl, %"SVf
3231#ifdef PERL_PATCHNUM
3232 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3233#endif
3234 " built for %s",
d7aa5382
JP
3235 vstringify(PL_patchlevel),
3236 ARCHNAME));
8e9464f1
JH
3237#else /* DGUX */
3238/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3239 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3240 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3241 vstringify(PL_patchlevel)));
8e9464f1
JH
3242 PerlIO_printf(PerlIO_stdout(),
3243 Perl_form(aTHX_ " built under %s at %s %s\n",
3244 OSNAME, __DATE__, __TIME__));
3245 PerlIO_printf(PerlIO_stdout(),
3246 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3247 OSVERS));
8e9464f1
JH
3248#endif /* !DGUX */
3249
fb73857a 3250#if defined(LOCAL_PATCH_COUNT)
3251 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3252 PerlIO_printf(PerlIO_stdout(),
3253 "\n(with %d registered patch%s, "
3254 "see perl -V for more detail)",
3255 (int)LOCAL_PATCH_COUNT,
3256 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3257#endif
1a30305b 3258
b0e47665 3259 PerlIO_printf(PerlIO_stdout(),
3246d7a3 3260 "\n\nCopyright 1987-2006, Larry Wall\n");
eae9c151
JH
3261#ifdef MACOS_TRADITIONAL
3262 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3263 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3264 "maintained by Chris Nandor\n");
eae9c151 3265#endif
79072805 3266#ifdef MSDOS
b0e47665
GS
3267 PerlIO_printf(PerlIO_stdout(),
3268 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 3269#endif
3270#ifdef DJGPP
b0e47665
GS
3271 PerlIO_printf(PerlIO_stdout(),
3272 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3273 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3274#endif
79072805 3275#ifdef OS2
b0e47665
GS
3276 PerlIO_printf(PerlIO_stdout(),
3277 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3278 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3279#endif
79072805 3280#ifdef atarist
b0e47665
GS
3281 PerlIO_printf(PerlIO_stdout(),
3282 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3283#endif
a3f9223b 3284#ifdef __BEOS__
b0e47665
GS
3285 PerlIO_printf(PerlIO_stdout(),
3286 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3287#endif
1d84e8df 3288#ifdef MPE
b0e47665 3289 PerlIO_printf(PerlIO_stdout(),
e583a879 3290 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3291#endif
9d116dd7 3292#ifdef OEMVS
b0e47665
GS
3293 PerlIO_printf(PerlIO_stdout(),
3294 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3295#endif
495c5fdc 3296#ifdef __VOS__
b0e47665 3297 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3298 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3299#endif
092bebab 3300#ifdef __OPEN_VM
b0e47665
GS
3301 PerlIO_printf(PerlIO_stdout(),
3302 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3303#endif
a1a0e61e 3304#ifdef POSIX_BC
b0e47665
GS
3305 PerlIO_printf(PerlIO_stdout(),
3306 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3307#endif
61ae2fbf 3308#ifdef __MINT__
b0e47665
GS
3309 PerlIO_printf(PerlIO_stdout(),
3310 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3311#endif
f83d2536 3312#ifdef EPOC
b0e47665 3313 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3314 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3315#endif
e1caacb4 3316#ifdef UNDER_CE
b475b3e6
JH
3317 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3318 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3319 wce_hitreturn();
3320#endif
a0fd4948 3321#ifdef __SYMBIAN32__
27da23d5
JH
3322 PerlIO_printf(PerlIO_stdout(),
3323 "Symbian port by Nokia, 2004-2005\n");
3324#endif
baed7233
DL
3325#ifdef BINARY_BUILD_NOTICE
3326 BINARY_BUILD_NOTICE;
3327#endif
b0e47665
GS
3328 PerlIO_printf(PerlIO_stdout(),
3329 "\n\
79072805 3330Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3331GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3332Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3333this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3334Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3335 my_exit(0);
79072805 3336 case 'w':
599cee73 3337 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3338 PL_dowarn |= G_WARN_ON;
599cee73
PM
3339 s++;
3340 return s;
3341 case 'W':
ac27b0f5 3342 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3343 if (!specialWARN(PL_compiling.cop_warnings))
3344 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3345 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3346 s++;
3347 return s;
3348 case 'X':
ac27b0f5 3349 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3350 if (!specialWARN(PL_compiling.cop_warnings))
3351 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3352 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3353 s++;
3354 return s;
a0d0e21e 3355 case '*':
79072805
LW
3356 case ' ':
3357 if (s[1] == '-') /* Additional switches on #! line. */
3358 return s+2;
3359 break;
a0d0e21e 3360 case '-':
79072805 3361 case 0:
51882d45 3362#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3363 case '\r':
3364#endif
79072805
LW
3365 case '\n':
3366 case '\t':
3367 break;
aa689395 3368#ifdef ALTERNATE_SHEBANG
3369 case 'S': /* OS/2 needs -S on "extproc" line. */
3370 break;
3371#endif
a0d0e21e 3372 case 'P':
3280af22 3373 if (PL_preprocess)
a0d0e21e
LW
3374 return s+1;
3375 /* FALL THROUGH */
79072805 3376 default:
cea2e8a9 3377 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3378 }
bd61b366 3379 return NULL;
79072805
LW
3380}
3381
3382/* compliments of Tom Christiansen */
3383
3384/* unexec() can be found in the Gnu emacs distribution */
ee580363 3385/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3386
3387void
864dbfa3 3388Perl_my_unexec(pTHX)
79072805
LW
3389{
3390#ifdef UNEXEC
46fc3d4c 3391 SV* prog;
3392 SV* file;
ee580363 3393 int status = 1;
79072805
LW
3394 extern int etext;
3395
ee580363 3396 prog = newSVpv(BIN_EXP, 0);
396482e1 3397 sv_catpvs(prog, "/perl");
6b88bc9c 3398 file = newSVpv(PL_origfilename, 0);
396482e1 3399 sv_catpvs(file, ".perldump");
79072805 3400
ee580363
GS
3401 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3402 /* unexec prints msg to stderr in case of failure */
6ad3d225 3403 PerlProc_exit(status);
79072805 3404#else
a5f75d66
AD
3405# ifdef VMS
3406# include <lib$routines.h>
3407 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3408# elif defined(WIN32) || defined(__CYGWIN__)
3409 Perl_croak(aTHX_ "dump is not supported");
aa689395 3410# else
79072805 3411 ABORT(); /* for use with undump */
aa689395 3412# endif
a5f75d66 3413#endif
79072805
LW
3414}
3415
cb68f92d
GS
3416/* initialize curinterp */
3417STATIC void
cea2e8a9 3418S_init_interp(pTHX)
cb68f92d 3419{
97aff369 3420 dVAR;
acfe0abc
GS
3421#ifdef MULTIPLICITY
3422# define PERLVAR(var,type)
3423# define PERLVARA(var,n,type)
3424# if defined(PERL_IMPLICIT_CONTEXT)
3425# if defined(USE_5005THREADS)
3426# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
27da23d5 3427# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
3428# else /* !USE_5005THREADS */
3429# define PERLVARI(var,type,init) aTHX->var = init;
3430# define PERLVARIC(var,type,init) aTHX->var = init;
3431# endif /* USE_5005THREADS */
3967c732 3432# else
acfe0abc
GS
3433# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3434# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3435# endif
acfe0abc
GS
3436# include "intrpvar.h"
3437# ifndef USE_5005THREADS
3438# include "thrdvar.h"
3439# endif
3440# undef PERLVAR
3441# undef PERLVARA
3442# undef PERLVARI
3443# undef PERLVARIC
3444#else
3445# define PERLVAR(var,type)
3446# define PERLVARA(var,n,type)
3447# define PERLVARI(var,type,init) PL_##var = init;
3448# define PERLVARIC(var,type,init) PL_##var = init;
3449# include "intrpvar.h"
3450# ifndef USE_5005THREADS
3451# include "thrdvar.h"
3452# endif
3453# undef PERLVAR
3454# undef PERLVARA
3455# undef PERLVARI
3456# undef PERLVARIC
cb68f92d
GS
3457#endif
3458
cb68f92d
GS
3459}
3460
76e3520e 3461STATIC void
cea2e8a9 3462S_init_main_stash(pTHX)
79072805 3463{
97aff369 3464 dVAR;
463ee0b2 3465 GV *gv;
6e72f9df 3466
3280af22 3467 PL_curstash = PL_defstash = newHV();
23579a14
NC
3468 /* We know that the string "main" will be in the global shared string
3469 table, so it's a small saving to use it rather than allocate another
3470 8 bytes. */
18916d0d 3471 PL_curstname = newSVpvs_share("main");
fafc274c 3472 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3473 /* If we hadn't caused another reference to "main" to be in the shared
3474 string table above, then it would be worth reordering these two,
3475 because otherwise all we do is delete "main" from it as a consequence
3476 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3477 SvREFCNT_dec(GvHV(gv));
23579a14 3478 hv_name_set(PL_defstash, "main", 4, 0);
3280af22 3479 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3480 SvREADONLY_on(gv);
fafc274c
NC
3481 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3482 SVt_PVAV)));
5fd80ba5 3483 SvREFCNT_inc(PL_incgv); /* Don't allow it to be freed */
3280af22 3484 GvMULTI_on(PL_incgv);
fafc274c 3485 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3486 GvMULTI_on(PL_hintgv);
fafc274c 3487 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5fd80ba5 3488 SvREFCNT_inc(PL_defgv);
fafc274c 3489 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5fd80ba5 3490 SvREFCNT_inc(PL_errgv);
3280af22 3491 GvMULTI_on(PL_errgv);
fafc274c 3492 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22 3493 GvMULTI_on(PL_replgv);
cea2e8a9 3494 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3495#ifdef PERL_DONT_CREATE_GVSV
3496 gv_SVadd(PL_errgv);
3497#endif
38a03e6e
MB
3498 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals.