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perlapi.pod Enhancements
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CommitLineData
4b88f280 1#line 2 "perl.c"
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
010d7370
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5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
6 * by Larry Wall and others
a687059c 7 *
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8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of Eärendil
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
43c0c913
NC
27#ifdef PERL_IS_MINIPERL
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
39#endif
40
df5cef82 41/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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42#ifdef I_UNISTD
43#include <unistd.h>
44#endif
a0d0e21e 45
2aa47728
NC
46#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
47# ifdef I_SYS_WAIT
48# include <sys/wait.h>
49# endif
bf357333
NC
50# ifdef I_SYSUIO
51# include <sys/uio.h>
52# endif
53
54union control_un {
55 struct cmsghdr cm;
56 char control[CMSG_SPACE(sizeof(int))];
57};
58
2aa47728
NC
59#endif
60
5311654c
JH
61#ifdef __BEOS__
62# define HZ 1000000
63#endif
64
65#ifndef HZ
66# ifdef CLK_TCK
67# define HZ CLK_TCK
68# else
69# define HZ 60
70# endif
71#endif
72
7114a2d2 73#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 74char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
75#endif
76
acfe0abc 77static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 78
cc69b689 79#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 80/* Drop everything. Heck, don't even try to call it */
cc69b689
NC
81# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
82#else
ec2019ad 83/* Drop almost everything */
cc69b689 84# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 85#endif
8d063cd8 86
d6f07c05
AL
87#define CALL_BODY_SUB(myop) \
88 if (PL_op == (myop)) \
139d0ce6 89 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
90 if (PL_op) \
91 CALLRUNOPS(aTHX);
92
93#define CALL_LIST_BODY(cv) \
94 PUSHMARK(PL_stack_sp); \
ad64d0ec 95 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
d6f07c05 96
e6827a76 97static void
daa7d858 98S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 99{
27da23d5 100 dVAR;
e6827a76
NC
101 if (!PL_curinterp) {
102 PERL_SET_INTERP(my_perl);
3db8f154 103#if defined(USE_ITHREADS)
e6827a76
NC
104 INIT_THREADS;
105 ALLOC_THREAD_KEY;
106 PERL_SET_THX(my_perl);
107 OP_REFCNT_INIT;
71ad1b0c 108 HINTS_REFCNT_INIT;
e6827a76 109 MUTEX_INIT(&PL_dollarzero_mutex);
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DM
110 MUTEX_INIT(&PL_my_ctx_mutex);
111# endif
e6827a76 112 }
c0bce9aa
NC
113#if defined(USE_ITHREADS)
114 else
115#else
116 /* This always happens for non-ithreads */
117#endif
118 {
e6827a76
NC
119 PERL_SET_THX(my_perl);
120 }
121}
06d86050 122
cbec8ebe
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123
124/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
125
126void
127Perl_sys_init(int* argc, char*** argv)
128{
4fc0badb 129 dVAR;
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NC
130
131 PERL_ARGS_ASSERT_SYS_INIT;
132
cbec8ebe
DM
133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_SYS_INIT_BODY(argc, argv);
136}
137
138void
139Perl_sys_init3(int* argc, char*** argv, char*** env)
140{
4fc0badb 141 dVAR;
7918f24d
NC
142
143 PERL_ARGS_ASSERT_SYS_INIT3;
144
cbec8ebe
DM
145 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
146 PERL_UNUSED_ARG(argv);
147 PERL_UNUSED_ARG(env);
148 PERL_SYS_INIT3_BODY(argc, argv, env);
149}
150
151void
d0820ef1 152Perl_sys_term()
cbec8ebe 153{
4fc0badb 154 dVAR;
bf81751b
DM
155 if (!PL_veto_cleanup) {
156 PERL_SYS_TERM_BODY();
157 }
cbec8ebe
DM
158}
159
160
32e30700
GS
161#ifdef PERL_IMPLICIT_SYS
162PerlInterpreter *
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163perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
164 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
165 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
166 struct IPerlDir* ipD, struct IPerlSock* ipS,
167 struct IPerlProc* ipP)
168{
169 PerlInterpreter *my_perl;
7918f24d
NC
170
171 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
172
9f653bb5 173 /* Newx() needs interpreter, so call malloc() instead */
32e30700 174 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 175 S_init_tls_and_interp(my_perl);
32e30700
GS
176 Zero(my_perl, 1, PerlInterpreter);
177 PL_Mem = ipM;
7766f137
GS
178 PL_MemShared = ipMS;
179 PL_MemParse = ipMP;
32e30700
GS
180 PL_Env = ipE;
181 PL_StdIO = ipStd;
182 PL_LIO = ipLIO;
183 PL_Dir = ipD;
184 PL_Sock = ipS;
185 PL_Proc = ipP;
7cb608b5 186 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 187
32e30700
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188 return my_perl;
189}
190#else
954c1994
GS
191
192/*
ccfc67b7
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193=head1 Embedding Functions
194
954c1994
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195=for apidoc perl_alloc
196
197Allocates a new Perl interpreter. See L<perlembed>.
198
199=cut
200*/
201
93a17b20 202PerlInterpreter *
cea2e8a9 203perl_alloc(void)
79072805 204{
cea2e8a9 205 PerlInterpreter *my_perl;
79072805 206
9f653bb5 207 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 208 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 209
e6827a76 210 S_init_tls_and_interp(my_perl);
7cb608b5 211#ifndef PERL_TRACK_MEMPOOL
07409e01 212 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
213#else
214 Zero(my_perl, 1, PerlInterpreter);
215 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
216 return my_perl;
217#endif
79072805 218}
32e30700 219#endif /* PERL_IMPLICIT_SYS */
79072805 220
954c1994
GS
221/*
222=for apidoc perl_construct
223
224Initializes a new Perl interpreter. See L<perlembed>.
225
226=cut
227*/
228
79072805 229void
0cb96387 230perl_construct(pTHXx)
79072805 231{
27da23d5 232 dVAR;
7918f24d
NC
233
234 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
235
8990e307 236#ifdef MULTIPLICITY
54aff467 237 init_interp();
ac27b0f5 238 PL_perl_destruct_level = 1;
54aff467 239#else
7918f24d 240 PERL_UNUSED_ARG(my_perl);
54aff467
GS
241 if (PL_perl_destruct_level > 0)
242 init_interp();
243#endif
34caed6d
DM
244 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
245
34caed6d
DM
246 /* set read-only and try to insure than we wont see REFCNT==0
247 very often */
248
249 SvREADONLY_on(&PL_sv_undef);
250 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
251
252 sv_setpv(&PL_sv_no,PL_No);
253 /* value lookup in void context - happens to have the side effect
a43d94f2
NC
254 of caching the numeric forms. However, as &PL_sv_no doesn't contain
255 a string that is a valid numer, we have to turn the public flags by
256 hand: */
34caed6d 257 SvNV(&PL_sv_no);
c1939273 258 SvIV(&PL_sv_no);
a43d94f2
NC
259 SvIOK_on(&PL_sv_no);
260 SvNOK_on(&PL_sv_no);
34caed6d
DM
261 SvREADONLY_on(&PL_sv_no);
262 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
263
264 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 265 SvNV(&PL_sv_yes);
c1939273 266 SvIV(&PL_sv_yes);
34caed6d
DM
267 SvREADONLY_on(&PL_sv_yes);
268 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
269
270 SvREADONLY_on(&PL_sv_placeholder);
271 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
272
273 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 274#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 275 PL_pidstatus = newHV();
ca0c25f6 276#endif
79072805 277
396482e1 278 PL_rs = newSVpvs("\n");
dc92893f 279
cea2e8a9 280 init_stacks();
79072805 281
748a9306 282 init_ids();
a5f75d66 283
312caa8e 284 JMPENV_BOOTSTRAP;
f86702cc
PP
285 STATUS_ALL_SUCCESS;
286
0672f40e 287 init_i18nl10n(1);
36477c24 288 SET_NUMERIC_STANDARD();
0b5b802d 289
ab821d7f 290#if defined(LOCAL_PATCH_COUNT)
3280af22 291 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
292#endif
293
52853b95
GS
294#ifdef HAVE_INTERP_INTERN
295 sys_intern_init();
296#endif
297
3a1ee7e8 298 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 299
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NIS
300 PL_fdpid = newAV(); /* for remembering popen pids by fd */
301 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 302 PL_errors = newSVpvs("");
76f68e9b
MHM
303 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
304 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
305 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 306#ifdef USE_ITHREADS
402d2eb1
NC
307 /* First entry is a list of empty elements. It needs to be initialised
308 else all hell breaks loose in S_find_uninit_var(). */
309 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 310 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 311#endif
e5dd39fc 312#ifdef USE_REENTRANT_API
59bd0823 313 Perl_reentrant_init(aTHX);
e5dd39fc 314#endif
3d47000e
AB
315
316 /* Note that strtab is a rather special HV. Assumptions are made
317 about not iterating on it, and not adding tie magic to it.
318 It is properly deallocated in perl_destruct() */
319 PL_strtab = newHV();
320
3d47000e
AB
321 HvSHAREKEYS_off(PL_strtab); /* mandatory */
322 hv_ksplit(PL_strtab, 512);
323
0631ea03
AB
324#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
325 _dyld_lookup_and_bind
326 ("__environ", (unsigned long *) &environ_pointer, NULL);
327#endif /* environ */
328
2f42fcb0
JH
329#ifndef PERL_MICRO
330# ifdef USE_ENVIRON_ARRAY
0631ea03 331 PL_origenviron = environ;
2f42fcb0 332# endif
0631ea03
AB
333#endif
334
5311654c 335 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 336 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
337 * BeOS has those, but returns the wrong value.
338 * The HZ if not originally defined has been by now
339 * been defined as CLK_TCK, if available. */
dbc1d986 340#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
341 PL_clocktick = sysconf(_SC_CLK_TCK);
342 if (PL_clocktick <= 0)
343#endif
344 PL_clocktick = HZ;
345
081fc587
AB
346 PL_stashcache = newHV();
347
e8e3635e 348 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 349 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 350
27da23d5
JH
351#ifdef HAS_MMAP
352 if (!PL_mmap_page_size) {
353#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
354 {
355 SETERRNO(0, SS_NORMAL);
356# ifdef _SC_PAGESIZE
357 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
358# else
359 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
360# endif
361 if ((long) PL_mmap_page_size < 0) {
362 if (errno) {
44f8325f 363 SV * const error = ERRSV;
d4c19fe8 364 SvUPGRADE(error, SVt_PV);
0510663f 365 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
366 }
367 else
368 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
369 }
370 }
371#else
372# ifdef HAS_GETPAGESIZE
373 PL_mmap_page_size = getpagesize();
374# else
375# if defined(I_SYS_PARAM) && defined(PAGESIZE)
376 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
377# endif
378# endif
379#endif
380 if (PL_mmap_page_size <= 0)
381 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
382 (IV) PL_mmap_page_size);
383 }
384#endif /* HAS_MMAP */
385
386#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
387 PL_timesbase.tms_utime = 0;
388 PL_timesbase.tms_stime = 0;
389 PL_timesbase.tms_cutime = 0;
390 PL_timesbase.tms_cstime = 0;
391#endif
392
7d113631
NC
393 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
394
a3e6e81e 395 PL_registered_mros = newHV();
9e169432
NC
396 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
397 HvMAX(PL_registered_mros) = 0;
a3e6e81e 398
8990e307 399 ENTER;
79072805
LW
400}
401
954c1994 402/*
62375a60
NIS
403=for apidoc nothreadhook
404
405Stub that provides thread hook for perl_destruct when there are
406no threads.
407
408=cut
409*/
410
411int
4e9e3734 412Perl_nothreadhook(pTHX)
62375a60 413{
96a5add6 414 PERL_UNUSED_CONTEXT;
62375a60
NIS
415 return 0;
416}
417
41e4abd8
NC
418#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
419void
420Perl_dump_sv_child(pTHX_ SV *sv)
421{
422 ssize_t got;
bf357333
NC
423 const int sock = PL_dumper_fd;
424 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
425 union control_un control;
426 struct msghdr msg;
808ad2d0 427 struct iovec vec[2];
bf357333 428 struct cmsghdr *cmptr;
808ad2d0
NC
429 int returned_errno;
430 unsigned char buffer[256];
41e4abd8 431
7918f24d
NC
432 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
433
bf357333 434 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
435 return;
436
437 PerlIO_flush(Perl_debug_log);
438
bf357333
NC
439 /* All these shenanigans are to pass a file descriptor over to our child for
440 it to dump out to. We can't let it hold open the file descriptor when it
441 forks, as the file descriptor it will dump to can turn out to be one end
442 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 443 be open, the wait would be forever.) */
bf357333
NC
444
445 msg.msg_control = control.control;
446 msg.msg_controllen = sizeof(control.control);
447 /* We're a connected socket so we don't need a destination */
448 msg.msg_name = NULL;
449 msg.msg_namelen = 0;
450 msg.msg_iov = vec;
808ad2d0 451 msg.msg_iovlen = 1;
bf357333
NC
452
453 cmptr = CMSG_FIRSTHDR(&msg);
454 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
455 cmptr->cmsg_level = SOL_SOCKET;
456 cmptr->cmsg_type = SCM_RIGHTS;
457 *((int *)CMSG_DATA(cmptr)) = 1;
458
459 vec[0].iov_base = (void*)&sv;
460 vec[0].iov_len = sizeof(sv);
461 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
462
463 if(got < 0) {
bf357333 464 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
465 abort();
466 }
bf357333
NC
467 if(got < sizeof(sv)) {
468 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
469 abort();
470 }
471
808ad2d0
NC
472 /* Return protocol is
473 int: errno value
474 unsigned char: length of location string (0 for empty)
475 unsigned char*: string (not terminated)
476 */
477 vec[0].iov_base = (void*)&returned_errno;
478 vec[0].iov_len = sizeof(returned_errno);
479 vec[1].iov_base = buffer;
480 vec[1].iov_len = 1;
481
482 got = readv(sock, vec, 2);
41e4abd8
NC
483
484 if(got < 0) {
485 perror("Debug leaking scalars parent read failed");
808ad2d0 486 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
487 abort();
488 }
808ad2d0 489 if(got < sizeof(returned_errno) + 1) {
41e4abd8 490 perror("Debug leaking scalars parent short read");
808ad2d0 491 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
492 abort();
493 }
494
808ad2d0
NC
495 if (*buffer) {
496 got = read(sock, buffer + 1, *buffer);
497 if(got < 0) {
498 perror("Debug leaking scalars parent read 2 failed");
499 PerlIO_flush(PerlIO_stderr());
500 abort();
501 }
502
503 if(got < *buffer) {
504 perror("Debug leaking scalars parent short read 2");
505 PerlIO_flush(PerlIO_stderr());
506 abort();
507 }
508 }
509
510 if (returned_errno || *buffer) {
511 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
512 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
513 returned_errno, strerror(returned_errno));
41e4abd8
NC
514 }
515}
516#endif
517
62375a60 518/*
954c1994
GS
519=for apidoc perl_destruct
520
521Shuts down a Perl interpreter. See L<perlembed>.
522
523=cut
524*/
525
31d77e54 526int
0cb96387 527perl_destruct(pTHXx)
79072805 528{
27da23d5 529 dVAR;
be2ea8ed 530 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 531 HV *hv;
2aa47728 532#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
533 pid_t child;
534#endif
8990e307 535
7918f24d
NC
536 PERL_ARGS_ASSERT_PERL_DESTRUCT;
537#ifndef MULTIPLICITY
ed6c66dd 538 PERL_UNUSED_ARG(my_perl);
7918f24d 539#endif
9d4ba2ae 540
3d22c4f0
GG
541 assert(PL_scopestack_ix == 1);
542
7766f137
GS
543 /* wait for all pseudo-forked children to finish */
544 PERL_WAIT_FOR_CHILDREN;
545
3280af22 546 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
547#ifdef DEBUGGING
548 {
9d4ba2ae
AL
549 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
550 if (s) {
e1ec3a88 551 const int i = atoi(s);
5f05dabc
PP
552 if (destruct_level < i)
553 destruct_level = i;
554 }
4633a7c4
LW
555 }
556#endif
557
27da23d5 558 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
559 dJMPENV;
560 int x = 0;
561
562 JMPENV_PUSH(x);
1b6737cc 563 PERL_UNUSED_VAR(x);
9ebf26ad 564 if (PL_endav && !PL_minus_c) {
ca7b837b 565 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 566 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 567 }
f3faeb53 568 JMPENV_POP;
26f423df 569 }
f3faeb53 570 LEAVE;
a0d0e21e 571 FREETMPS;
3d22c4f0 572 assert(PL_scopestack_ix == 0);
a0d0e21e 573
e00b64d4 574 /* Need to flush since END blocks can produce output */
f13a2bc0 575 my_fflush_all();
e00b64d4 576
16c91539 577 if (PL_threadhook(aTHX)) {
62375a60 578 /* Threads hook has vetoed further cleanup */
c301d606 579 PL_veto_cleanup = TRUE;
37038d91 580 return STATUS_EXIT;
62375a60
NIS
581 }
582
2aa47728
NC
583#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
584 if (destruct_level != 0) {
585 /* Fork here to create a child. Our child's job is to preserve the
586 state of scalars prior to destruction, so that we can instruct it
587 to dump any scalars that we later find have leaked.
588 There's no subtlety in this code - it assumes POSIX, and it doesn't
589 fail gracefully */
590 int fd[2];
591
592 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
593 perror("Debug leaking scalars socketpair failed");
594 abort();
595 }
596
597 child = fork();
598 if(child == -1) {
599 perror("Debug leaking scalars fork failed");
600 abort();
601 }
602 if (!child) {
603 /* We are the child */
3125a5a4
NC
604 const int sock = fd[1];
605 const int debug_fd = PerlIO_fileno(Perl_debug_log);
606 int f;
808ad2d0
NC
607 const char *where;
608 /* Our success message is an integer 0, and a char 0 */
b61433a9 609 static const char success[sizeof(int) + 1] = {0};
3125a5a4 610
2aa47728 611 close(fd[0]);
2aa47728 612
3125a5a4
NC
613 /* We need to close all other file descriptors otherwise we end up
614 with interesting hangs, where the parent closes its end of a
615 pipe, and sits waiting for (another) child to terminate. Only
616 that child never terminates, because it never gets EOF, because
bf357333
NC
617 we also have the far end of the pipe open. We even need to
618 close the debugging fd, because sometimes it happens to be one
619 end of a pipe, and a process is waiting on the other end for
620 EOF. Normally it would be closed at some point earlier in
621 destruction, but if we happen to cause the pipe to remain open,
622 EOF never occurs, and we get an infinite hang. Hence all the
623 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
624
625 f = sysconf(_SC_OPEN_MAX);
626 if(f < 0) {
808ad2d0
NC
627 where = "sysconf failed";
628 goto abort;
3125a5a4
NC
629 }
630 while (f--) {
631 if (f == sock)
632 continue;
3125a5a4
NC
633 close(f);
634 }
635
2aa47728
NC
636 while (1) {
637 SV *target;
bf357333
NC
638 union control_un control;
639 struct msghdr msg;
640 struct iovec vec[1];
641 struct cmsghdr *cmptr;
642 ssize_t got;
643 int got_fd;
644
645 msg.msg_control = control.control;
646 msg.msg_controllen = sizeof(control.control);
647 /* We're a connected socket so we don't need a source */
648 msg.msg_name = NULL;
649 msg.msg_namelen = 0;
650 msg.msg_iov = vec;
651 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
652
653 vec[0].iov_base = (void*)&target;
654 vec[0].iov_len = sizeof(target);
655
656 got = recvmsg(sock, &msg, 0);
2aa47728
NC
657
658 if(got == 0)
659 break;
660 if(got < 0) {
808ad2d0
NC
661 where = "recv failed";
662 goto abort;
2aa47728
NC
663 }
664 if(got < sizeof(target)) {
808ad2d0
NC
665 where = "short recv";
666 goto abort;
2aa47728 667 }
bf357333 668
808ad2d0
NC
669 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
670 where = "no cmsg";
671 goto abort;
672 }
673 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
674 where = "wrong cmsg_len";
675 goto abort;
676 }
677 if(cmptr->cmsg_level != SOL_SOCKET) {
678 where = "wrong cmsg_level";
679 goto abort;
680 }
681 if(cmptr->cmsg_type != SCM_RIGHTS) {
682 where = "wrong cmsg_type";
683 goto abort;
684 }
bf357333
NC
685
686 got_fd = *(int*)CMSG_DATA(cmptr);
687 /* For our last little bit of trickery, put the file descriptor
688 back into Perl_debug_log, as if we never actually closed it
689 */
808ad2d0
NC
690 if(got_fd != debug_fd) {
691 if (dup2(got_fd, debug_fd) == -1) {
692 where = "dup2";
693 goto abort;
694 }
695 }
2aa47728 696 sv_dump(target);
bf357333 697
2aa47728
NC
698 PerlIO_flush(Perl_debug_log);
699
808ad2d0 700 got = write(sock, &success, sizeof(success));
2aa47728
NC
701
702 if(got < 0) {
808ad2d0
NC
703 where = "write failed";
704 goto abort;
2aa47728 705 }
808ad2d0
NC
706 if(got < sizeof(success)) {
707 where = "short write";
708 goto abort;
2aa47728
NC
709 }
710 }
711 _exit(0);
808ad2d0
NC
712 abort:
713 {
714 int send_errno = errno;
715 unsigned char length = (unsigned char) strlen(where);
716 struct iovec failure[3] = {
717 {(void*)&send_errno, sizeof(send_errno)},
718 {&length, 1},
719 {(void*)where, length}
720 };
721 int got = writev(sock, failure, 3);
722 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
723 in the parent if we try to read from the socketpair after the
724 child has exited, even if there was data to read.
725 So sleep a bit to give the parent a fighting chance of
726 reading the data. */
727 sleep(2);
728 _exit((got == -1) ? errno : 0);
729 }
bf357333 730 /* End of child. */
2aa47728 731 }
41e4abd8 732 PL_dumper_fd = fd[0];
2aa47728
NC
733 close(fd[1]);
734 }
735#endif
736
ff0cee69
PP
737 /* We must account for everything. */
738
739 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
740 /* Do this now, because destroying ops can cause new SVs to be generated
741 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
742 PL_curcop to point to a valid op from which the filename structure
743 member is copied. */
744 PL_curcop = &PL_compiling;
3280af22 745 if (PL_main_root) {
4e380990
DM
746 /* ensure comppad/curpad to refer to main's pad */
747 if (CvPADLIST(PL_main_cv)) {
748 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
749 }
3280af22 750 op_free(PL_main_root);
5f66b61c 751 PL_main_root = NULL;
a0d0e21e 752 }
5f66b61c 753 PL_main_start = NULL;
aac9d523
DM
754 /* note that PL_main_cv isn't usually actually freed at this point,
755 * due to the CvOUTSIDE refs from subs compiled within it. It will
756 * get freed once all the subs are freed in sv_clean_all(), for
757 * destruct_level > 0 */
3280af22 758 SvREFCNT_dec(PL_main_cv);
601f1833 759 PL_main_cv = NULL;
ca7b837b 760 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 761
13621cfb
NIS
762 /* Tell PerlIO we are about to tear things apart in case
763 we have layers which are using resources that should
764 be cleaned up now.
765 */
766
767 PerlIO_destruct(aTHX);
768
3280af22 769 if (PL_sv_objcount) {
a0d0e21e
LW
770 /*
771 * Try to destruct global references. We do this first so that the
772 * destructors and destructees still exist. Some sv's might remain.
773 * Non-referenced objects are on their own.
774 */
a0d0e21e 775 sv_clean_objs();
bf9cdc68 776 PL_sv_objcount = 0;
8990e307
LW
777 }
778
5cd24f17 779 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 780 SvREFCNT_dec(PL_warnhook);
a0714e2c 781 PL_warnhook = NULL;
3280af22 782 SvREFCNT_dec(PL_diehook);
a0714e2c 783 PL_diehook = NULL;
5cd24f17 784
4b556e6c 785 /* call exit list functions */
3280af22 786 while (PL_exitlistlen-- > 0)
acfe0abc 787 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 788
3280af22 789 Safefree(PL_exitlist);
4b556e6c 790
1c4916e5
CB
791 PL_exitlist = NULL;
792 PL_exitlistlen = 0;
793
a3e6e81e
NC
794 SvREFCNT_dec(PL_registered_mros);
795
551a8b83 796 /* jettison our possibly duplicated environment */
4b647fb0
DM
797 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
798 * so we certainly shouldn't free it here
799 */
2f42fcb0 800#ifndef PERL_MICRO
4b647fb0 801#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 802 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
803#ifdef USE_ITHREADS
804 /* only main thread can free environ[0] contents */
805 && PL_curinterp == aTHX
806#endif
807 )
808 {
551a8b83
JH
809 I32 i;
810
811 for (i = 0; environ[i]; i++)
4b420006 812 safesysfree(environ[i]);
0631ea03 813
4b420006
JH
814 /* Must use safesysfree() when working with environ. */
815 safesysfree(environ);
551a8b83
JH
816
817 environ = PL_origenviron;
818 }
819#endif
2f42fcb0 820#endif /* !PERL_MICRO */
551a8b83 821
30985c42
JH
822 if (destruct_level == 0) {
823
824 DEBUG_P(debprofdump());
825
826#if defined(PERLIO_LAYERS)
827 /* No more IO - including error messages ! */
828 PerlIO_cleanup(aTHX);
829#endif
830
831 CopFILE_free(&PL_compiling);
832 CopSTASH_free(&PL_compiling);
833
834 /* The exit() function will do everything that needs doing. */
835 return STATUS_EXIT;
836 }
837
5f8cb046
DM
838#ifdef USE_ITHREADS
839 /* the syntax tree is shared between clones
840 * so op_free(PL_main_root) only ReREFCNT_dec's
841 * REGEXPs in the parent interpreter
842 * we need to manually ReREFCNT_dec for the clones
843 */
5f8cb046 844 SvREFCNT_dec(PL_regex_padav);
7d49f689 845 PL_regex_padav = NULL;
5f8cb046
DM
846 PL_regex_pad = NULL;
847#endif
848
ad64d0ec 849 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
850 PL_stashcache = NULL;
851
5f05dabc
PP
852 /* loosen bonds of global variables */
853
2f9285f8
DM
854 /* XXX can PL_parser still be non-null here? */
855 if(PL_parser && PL_parser->rsfp) {
856 (void)PerlIO_close(PL_parser->rsfp);
857 PL_parser->rsfp = NULL;
8ebc5c01
PP
858 }
859
84386e14
RGS
860 if (PL_minus_F) {
861 Safefree(PL_splitstr);
862 PL_splitstr = NULL;
863 }
864
8ebc5c01 865 /* switches */
3280af22
NIS
866 PL_minus_n = FALSE;
867 PL_minus_p = FALSE;
868 PL_minus_l = FALSE;
869 PL_minus_a = FALSE;
870 PL_minus_F = FALSE;
871 PL_doswitches = FALSE;
599cee73 872 PL_dowarn = G_WARN_OFF;
3280af22 873 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
874 PL_unsafe = FALSE;
875
876 Safefree(PL_inplace);
bd61b366 877 PL_inplace = NULL;
a7cb1f99 878 SvREFCNT_dec(PL_patchlevel);
1e8125c6 879 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
880
881 if (PL_e_script) {
882 SvREFCNT_dec(PL_e_script);
a0714e2c 883 PL_e_script = NULL;
8ebc5c01
PP
884 }
885
bf9cdc68
RG
886 PL_perldb = 0;
887
8ebc5c01
PP
888 /* magical thingies */
889
e23d9e2f
CS
890 SvREFCNT_dec(PL_ofsgv); /* *, */
891 PL_ofsgv = NULL;
5f05dabc 892
7889fe52 893 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 894 PL_ors_sv = NULL;
8ebc5c01 895
3280af22 896 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 897 PL_rs = NULL;
dc92893f 898
d33b2eba 899 Safefree(PL_osname); /* $^O */
bd61b366 900 PL_osname = NULL;
5f05dabc 901
3280af22 902 SvREFCNT_dec(PL_statname);
a0714e2c
SS
903 PL_statname = NULL;
904 PL_statgv = NULL;
5f05dabc 905
8ebc5c01
PP
906 /* defgv, aka *_ should be taken care of elsewhere */
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);
3c10abe3
AG
919 SvREFCNT_dec(PL_unitcheckav);
920 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 921 SvREFCNT_dec(PL_initav);
7d49f689
NC
922 PL_beginav = NULL;
923 PL_beginav_save = NULL;
924 PL_endav = NULL;
925 PL_checkav = NULL;
926 PL_checkav_save = NULL;
3c10abe3
AG
927 PL_unitcheckav = NULL;
928 PL_unitcheckav_save = NULL;
7d49f689 929 PL_initav = NULL;
5618dfe8 930
8ebc5c01 931 /* shortcuts just get cleared */
a0714e2c
SS
932 PL_envgv = NULL;
933 PL_incgv = NULL;
934 PL_hintgv = NULL;
935 PL_errgv = NULL;
936 PL_argvgv = NULL;
937 PL_argvoutgv = NULL;
938 PL_stdingv = NULL;
939 PL_stderrgv = NULL;
940 PL_last_in_gv = NULL;
941 PL_replgv = NULL;
942 PL_DBgv = NULL;
943 PL_DBline = NULL;
944 PL_DBsub = NULL;
945 PL_DBsingle = NULL;
946 PL_DBtrace = NULL;
947 PL_DBsignal = NULL;
601f1833 948 PL_DBcv = NULL;
7d49f689 949 PL_dbargs = NULL;
5c284bb0 950 PL_debstash = NULL;
8ebc5c01 951
7a1c5554 952 SvREFCNT_dec(PL_argvout_stack);
7d49f689 953 PL_argvout_stack = NULL;
8ebc5c01 954
5c831c24 955 SvREFCNT_dec(PL_modglobal);
5c284bb0 956 PL_modglobal = NULL;
5c831c24 957 SvREFCNT_dec(PL_preambleav);
7d49f689 958 PL_preambleav = NULL;
5c831c24 959 SvREFCNT_dec(PL_subname);
a0714e2c 960 PL_subname = NULL;
ca0c25f6 961#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 962 SvREFCNT_dec(PL_pidstatus);
5c284bb0 963 PL_pidstatus = NULL;
ca0c25f6 964#endif
5c831c24 965 SvREFCNT_dec(PL_toptarget);
a0714e2c 966 PL_toptarget = NULL;
5c831c24 967 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
968 PL_bodytarget = NULL;
969 PL_formtarget = NULL;
5c831c24 970
d33b2eba 971 /* free locale stuff */
b9582b6a 972#ifdef USE_LOCALE_COLLATE
d33b2eba 973 Safefree(PL_collation_name);
bd61b366 974 PL_collation_name = NULL;
b9582b6a 975#endif
d33b2eba 976
b9582b6a 977#ifdef USE_LOCALE_NUMERIC
d33b2eba 978 Safefree(PL_numeric_name);
bd61b366 979 PL_numeric_name = NULL;
a453c169 980 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 981 PL_numeric_radix_sv = NULL;
b9582b6a 982#endif
d33b2eba 983
5c831c24
GS
984 /* clear utf8 character classes */
985 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
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);
2726813d 1004 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 1005 PL_utf8_alnum = NULL;
a0714e2c
SS
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;
2726813d 1024 PL_utf8_foldclosures = NULL;
5c831c24 1025
971a9dd3 1026 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1027 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1028 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1029 cophh_free(CopHINTHASH_get(&PL_compiling));
1030 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
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 1036 hv = PL_defstash;
ca556bcd
DM
1037 /* break ref loop *:: <=> %:: */
1038 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1039 PL_defstash = 0;
a0d0e21e 1040 SvREFCNT_dec(hv);
5c831c24 1041 SvREFCNT_dec(PL_curstname);
a0714e2c 1042 PL_curstname = NULL;
a0d0e21e 1043
5a844595
GS
1044 /* clear queued errors */
1045 SvREFCNT_dec(PL_errors);
a0714e2c 1046 PL_errors = NULL;
5a844595 1047
dd69841b
BB
1048 SvREFCNT_dec(PL_isarev);
1049
a0d0e21e 1050 FREETMPS;
9b387841 1051 if (destruct_level >= 2) {
3280af22 1052 if (PL_scopestack_ix != 0)
9b387841
NC
1053 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1054 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1055 (long)PL_scopestack_ix);
3280af22 1056 if (PL_savestack_ix != 0)
9b387841
NC
1057 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1058 "Unbalanced saves: %ld more saves than restores\n",
1059 (long)PL_savestack_ix);
3280af22 1060 if (PL_tmps_floor != -1)
9b387841
NC
1061 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1062 (long)PL_tmps_floor + 1);
a0d0e21e 1063 if (cxstack_ix != -1)
9b387841
NC
1064 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1065 (long)cxstack_ix + 1);
a0d0e21e 1066 }
8990e307 1067
776df701 1068#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1069 /* the entries in this list are allocated via SV PVX's, so get freed
1070 * in sv_clean_all */
1071 Safefree(PL_my_cxt_list);
776df701 1072#endif
57bb2458 1073
8990e307 1074 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1075
1076 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1077 while (sv_clean_all() > 2)
5226ed68
JH
1078 ;
1079
d4777f27
GS
1080 AvREAL_off(PL_fdpid); /* no surviving entries */
1081 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1082 PL_fdpid = NULL;
d33b2eba 1083
6c644e78
GS
1084#ifdef HAVE_INTERP_INTERN
1085 sys_intern_clear();
1086#endif
1087
6e72f9df
PP
1088 /* Destruct the global string table. */
1089 {
1090 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1091 * so that sv_free() won't fail on them.
80459961
NC
1092 * Now that the global string table is using a single hunk of memory
1093 * for both HE and HEK, we either need to explicitly unshare it the
1094 * correct way, or actually free things here.
6e72f9df 1095 */
80459961
NC
1096 I32 riter = 0;
1097 const I32 max = HvMAX(PL_strtab);
c4420975 1098 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1099 HE *hent = array[0];
1100
6e72f9df 1101 for (;;) {
0453d815 1102 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1103 HE * const next = HeNEXT(hent);
9014280d 1104 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1105 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1106 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1107 Safefree(hent);
1108 hent = next;
6e72f9df
PP
1109 }
1110 if (!hent) {
1111 if (++riter > max)
1112 break;
1113 hent = array[riter];
1114 }
1115 }
80459961
NC
1116
1117 Safefree(array);
1118 HvARRAY(PL_strtab) = 0;
1119 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1120 }
3280af22 1121 SvREFCNT_dec(PL_strtab);
6e72f9df 1122
e652bb2f 1123#ifdef USE_ITHREADS
c21d1a0f 1124 /* free the pointer tables used for cloning */
a0739874 1125 ptr_table_free(PL_ptr_table);
bf9cdc68 1126 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1127#endif
a0739874 1128
d33b2eba
GS
1129 /* free special SVs */
1130
1131 SvREFCNT(&PL_sv_yes) = 0;
1132 sv_clear(&PL_sv_yes);
1133 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1134 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1135
1136 SvREFCNT(&PL_sv_no) = 0;
1137 sv_clear(&PL_sv_no);
1138 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1139 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1140
9f375a43
DM
1141 {
1142 int i;
1143 for (i=0; i<=2; i++) {
1144 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1145 sv_clear(PERL_DEBUG_PAD(i));
1146 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1147 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1148 }
1149 }
1150
0453d815 1151 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1152 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1153
eba0f806
DM
1154#ifdef DEBUG_LEAKING_SCALARS
1155 if (PL_sv_count != 0) {
1156 SV* sva;
1157 SV* sv;
1158 register SV* svend;
1159
ad64d0ec 1160 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1161 svend = &sva[SvREFCNT(sva)];
1162 for (sv = sva + 1; sv < svend; ++sv) {
1163 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1164 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1165 " flags=0x%"UVxf
fd0854ff 1166 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1167 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1168 "serial %"UVuf"\n",
574b8821
NC
1169 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1170 pTHX__VALUE,
fd0854ff
DM
1171 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1172 sv->sv_debug_line,
1173 sv->sv_debug_inpad ? "for" : "by",
1174 sv->sv_debug_optype ?
1175 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1176 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1177 sv->sv_debug_serial
fd0854ff 1178 );
2aa47728 1179#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1180 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1181#endif
eba0f806
DM
1182 }
1183 }
1184 }
1185 }
2aa47728
NC
1186#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1187 {
1188 int status;
1189 fd_set rset;
1190 /* Wait for up to 4 seconds for child to terminate.
1191 This seems to be the least effort way of timing out on reaping
1192 its exit status. */
1193 struct timeval waitfor = {4, 0};
41e4abd8 1194 int sock = PL_dumper_fd;
2aa47728
NC
1195
1196 shutdown(sock, 1);
1197 FD_ZERO(&rset);
1198 FD_SET(sock, &rset);
1199 select(sock + 1, &rset, NULL, NULL, &waitfor);
1200 waitpid(child, &status, WNOHANG);
1201 close(sock);
1202 }
1203#endif
eba0f806 1204#endif
77abb4c6
NC
1205#ifdef DEBUG_LEAKING_SCALARS_ABORT
1206 if (PL_sv_count)
1207 abort();
1208#endif
bf9cdc68 1209 PL_sv_count = 0;
eba0f806 1210
f1fac472
NC
1211#ifdef PERL_DEBUG_READONLY_OPS
1212 free(PL_slabs);
1213 PL_slabs = NULL;
1214 PL_slab_count = 0;
1215#endif
eba0f806 1216
56a2bab7 1217#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1218 /* No more IO - including error messages ! */
1219 PerlIO_cleanup(aTHX);
1220#endif
1221
9f4bd222 1222 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1223 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1224 for no arg - and will try and SvREFCNT_dec it.
1225 */
1226 SvREFCNT(&PL_sv_undef) = 0;
1227 SvREADONLY_off(&PL_sv_undef);
1228
3280af22 1229 Safefree(PL_origfilename);
bd61b366 1230 PL_origfilename = NULL;
3280af22 1231 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1232 PL_reg_start_tmp = (char**)NULL;
1233 PL_reg_start_tmpl = 0;
43c5f42d 1234 Safefree(PL_reg_curpm);
82ba1be6 1235 Safefree(PL_reg_poscache);
dd28f7bb 1236 free_tied_hv_pool();
3280af22 1237 Safefree(PL_op_mask);
cf36064f 1238 Safefree(PL_psig_name);
bf9cdc68 1239 PL_psig_name = (SV**)NULL;
d525a7b2 1240 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1241 {
1242 /* We need to NULL PL_psig_pend first, so that
1243 signal handlers know not to use it */
1244 int *psig_save = PL_psig_pend;
1245 PL_psig_pend = (int*)NULL;
1246 Safefree(psig_save);
1247 }
a0714e2c 1248 PL_formfeed = NULL;
6e72f9df 1249 nuke_stacks();
bf9cdc68
RG
1250 PL_tainting = FALSE;
1251 PL_taint_warn = FALSE;
3280af22 1252 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1253 PL_debug = 0;
ac27b0f5 1254
a0d0e21e 1255 DEBUG_P(debprofdump());
d33b2eba 1256
e5dd39fc 1257#ifdef USE_REENTRANT_API
10bc17b6 1258 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1259#endif
1260
612f20c3
GS
1261 sv_free_arenas();
1262
5d9a96ca
DM
1263 while (PL_regmatch_slab) {
1264 regmatch_slab *s = PL_regmatch_slab;
1265 PL_regmatch_slab = PL_regmatch_slab->next;
1266 Safefree(s);
1267 }
1268
fc36a67e
PP
1269 /* As the absolutely last thing, free the non-arena SV for mess() */
1270
3280af22 1271 if (PL_mess_sv) {
f350b448
NC
1272 /* we know that type == SVt_PVMG */
1273
9c63abab 1274 /* it could have accumulated taint magic */
f350b448
NC
1275 MAGIC* mg;
1276 MAGIC* moremagic;
1277 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1278 moremagic = mg->mg_moremagic;
1279 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1280 && mg->mg_len >= 0)
1281 Safefree(mg->mg_ptr);
1282 Safefree(mg);
9c63abab 1283 }
f350b448 1284
fc36a67e 1285 /* we know that type >= SVt_PV */
8bd4d4c5 1286 SvPV_free(PL_mess_sv);
3280af22
NIS
1287 Safefree(SvANY(PL_mess_sv));
1288 Safefree(PL_mess_sv);
a0714e2c 1289 PL_mess_sv = NULL;
fc36a67e 1290 }
37038d91 1291 return STATUS_EXIT;
79072805
LW
1292}
1293
954c1994
GS
1294/*
1295=for apidoc perl_free
1296
1297Releases a Perl interpreter. See L<perlembed>.
1298
1299=cut
1300*/
1301
79072805 1302void
0cb96387 1303perl_free(pTHXx)
79072805 1304{
5174512c
NC
1305 dVAR;
1306
7918f24d
NC
1307 PERL_ARGS_ASSERT_PERL_FREE;
1308
c301d606
DM
1309 if (PL_veto_cleanup)
1310 return;
1311
7cb608b5 1312#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1313 {
1314 /*
1315 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1316 * value as we're probably hunting memory leaks then
1317 */
1318 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1319 if (!s || atoi(s) == 0) {
4fd0a9b8 1320 const U32 old_debug = PL_debug;
55ef9aae
MHM
1321 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1322 thread at thread exit. */
4fd0a9b8
NC
1323 if (DEBUG_m_TEST) {
1324 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1325 "free this thread's memory\n");
1326 PL_debug &= ~ DEBUG_m_FLAG;
1327 }
55ef9aae
MHM
1328 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1329 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1330 PL_debug = old_debug;
55ef9aae
MHM
1331 }
1332 }
7cb608b5
NC
1333#endif
1334
acfe0abc 1335#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1336# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1337 {
acfe0abc 1338# ifdef NETWARE
7af12a34 1339 void *host = nw_internal_host;
acfe0abc 1340# else
7af12a34 1341 void *host = w32_internal_host;
acfe0abc 1342# endif
7af12a34 1343 PerlMem_free(aTHXx);
acfe0abc 1344# ifdef NETWARE
7af12a34 1345 nw_delete_internal_host(host);
acfe0abc 1346# else
7af12a34 1347 win32_delete_internal_host(host);
acfe0abc 1348# endif
7af12a34 1349 }
1c0ca838
GS
1350# else
1351 PerlMem_free(aTHXx);
1352# endif
acfe0abc
GS
1353#else
1354 PerlMem_free(aTHXx);
76e3520e 1355#endif
79072805
LW
1356}
1357
b7f7fff6 1358#if defined(USE_ITHREADS)
aebd1ac7
GA
1359/* provide destructors to clean up the thread key when libperl is unloaded */
1360#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1361
826955bd 1362#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1363#pragma fini "perl_fini"
666ad1ec
GA
1364#elif defined(__sun) && !defined(__GNUC__)
1365#pragma fini (perl_fini)
aebd1ac7
GA
1366#endif
1367
0dbb1585
AL
1368static void
1369#if defined(__GNUC__)
1370__attribute__((destructor))
aebd1ac7 1371#endif
de009b76 1372perl_fini(void)
aebd1ac7 1373{
27da23d5 1374 dVAR;
c301d606 1375 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1376 FREE_THREAD_KEY;
1377}
1378
1379#endif /* WIN32 */
1380#endif /* THREADS */
1381
4b556e6c 1382void
864dbfa3 1383Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1384{
97aff369 1385 dVAR;
3280af22
NIS
1386 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1387 PL_exitlist[PL_exitlistlen].fn = fn;
1388 PL_exitlist[PL_exitlistlen].ptr = ptr;
1389 ++PL_exitlistlen;
4b556e6c
JD
1390}
1391
56cf6df8
RGS
1392#ifdef HAS_PROCSELFEXE
1393/* This is a function so that we don't hold on to MAXPATHLEN
1394 bytes of stack longer than necessary
1395 */
1396STATIC void
e1ec3a88 1397S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1398{
1399 char buf[MAXPATHLEN];
1400 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1401
1402 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1403 includes a spurious NUL which will cause $^X to fail in system
1404 or backticks (this will prevent extensions from being built and
1405 many tests from working). readlink is not meant to add a NUL.
1406 Normal readlink works fine.
1407 */
1408 if (len > 0 && buf[len-1] == '\0') {
1409 len--;
1410 }
1411
1412 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1413 returning the text "unknown" from the readlink rather than the path
1414 to the executable (or returning an error from the readlink). Any valid
1415 path has a '/' in it somewhere, so use that to validate the result.
1416 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1417 */
1418 if (len > 0 && memchr(buf, '/', len)) {
1419 sv_setpvn(sv,buf,len);
1420 }
1421 else {
1422 sv_setpv(sv,arg0);
1423 }
1424}
1425#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1426
1427STATIC void
1428S_set_caret_X(pTHX) {
97aff369 1429 dVAR;
fafc274c 1430 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1431 if (tmpgv) {
1432#ifdef HAS_PROCSELFEXE
1433 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1434#else
1435#ifdef OS2
c69033f2 1436 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1437#else
c69033f2 1438 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1439#endif
1440#endif
1441 }
1442}
1443
954c1994
GS
1444/*
1445=for apidoc perl_parse
1446
1447Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1448
1449=cut
1450*/
1451
79072805 1452int
0cb96387 1453perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1454{
27da23d5 1455 dVAR;
6224f72b 1456 I32 oldscope;
6224f72b 1457 int ret;
db36c5a1 1458 dJMPENV;
8d063cd8 1459
7918f24d
NC
1460 PERL_ARGS_ASSERT_PERL_PARSE;
1461#ifndef MULTIPLICITY
ed6c66dd 1462 PERL_UNUSED_ARG(my_perl);
7918f24d 1463#endif
9d4ba2ae 1464
b0891165
JH
1465#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1466 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1467 * This MUST be done before any hash stores or fetches take place.
486ec47a 1468 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1469 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1470 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1471 if (!PL_rehash_seed_set)
1472 PL_rehash_seed = get_hash_seed();
b0891165 1473 {
9d4ba2ae 1474 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1475
1b6737cc
AL
1476 if (s && (atoi(s) == 1))
1477 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1478 }
1479#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1480
3280af22 1481 PL_origargc = argc;
e2975953 1482 PL_origargv = argv;
a0d0e21e 1483
a2722ac9
GA
1484 if (PL_origalen != 0) {
1485 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1486 }
1487 else {
3cb9023d
JH
1488 /* Set PL_origalen be the sum of the contiguous argv[]
1489 * elements plus the size of the env in case that it is
e9137a8e 1490 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1491 * as the maximum modifiable length of $0. In the worst case
1492 * the area we are able to modify is limited to the size of
43c32782 1493 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1494 * --jhi */
e1ec3a88 1495 const char *s = NULL;
54bfe034 1496 int i;
1b6737cc 1497 const UV mask =
7d8e7db3 1498 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1499 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1500 const UV aligned =
43c32782
JH
1501 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1502
1503 /* See if all the arguments are contiguous in memory. Note
1504 * that 'contiguous' is a loose term because some platforms
1505 * align the argv[] and the envp[]. If the arguments look
1506 * like non-aligned, assume that they are 'strictly' or
1507 * 'traditionally' contiguous. If the arguments look like
1508 * aligned, we just check that they are within aligned
1509 * PTRSIZE bytes. As long as no system has something bizarre
1510 * like the argv[] interleaved with some other data, we are
1511 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1512 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1513 while (*s) s++;
1514 for (i = 1; i < PL_origargc; i++) {
1515 if ((PL_origargv[i] == s + 1
43c32782 1516#ifdef OS2
c8941eeb 1517 || PL_origargv[i] == s + 2
43c32782 1518#endif
c8941eeb
JH
1519 )
1520 ||
1521 (aligned &&
1522 (PL_origargv[i] > s &&
1523 PL_origargv[i] <=
1524 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1525 )
1526 {
1527 s = PL_origargv[i];
1528 while (*s) s++;
1529 }
1530 else
1531 break;
54bfe034 1532 }
54bfe034 1533 }
a4a109c2
JD
1534
1535#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1536 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1537 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1538 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1539 ||
1540 (aligned &&
1541 (PL_origenviron[0] > s &&
1542 PL_origenviron[0] <=
1543 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1544 )
1545 {
9d419b5f 1546#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1547 s = PL_origenviron[0];
1548 while (*s) s++;
1549#endif
bd61b366 1550 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1551 /* Force copy of environment. */
1552 for (i = 1; PL_origenviron[i]; i++) {
1553 if (PL_origenviron[i] == s + 1
1554 ||
1555 (aligned &&
1556 (PL_origenviron[i] > s &&
1557 PL_origenviron[i] <=
1558 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1559 )
1560 {
1561 s = PL_origenviron[i];
1562 while (*s) s++;
1563 }
1564 else
1565 break;
54bfe034 1566 }
43c32782 1567 }
54bfe034 1568 }
a4a109c2
JD
1569#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1570
2d2af554 1571 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1572 }
1573
3280af22 1574 if (PL_do_undump) {
a0d0e21e
LW
1575
1576 /* Come here if running an undumped a.out. */
1577
3280af22
NIS
1578 PL_origfilename = savepv(argv[0]);
1579 PL_do_undump = FALSE;
a0d0e21e 1580 cxstack_ix = -1; /* start label stack again */
748a9306 1581 init_ids();
b7975bdd
NC
1582 assert (!PL_tainted);
1583 TAINT;
1584 S_set_caret_X(aTHX);
1585 TAINT_NOT;
a0d0e21e
LW
1586 init_postdump_symbols(argc,argv,env);
1587 return 0;
1588 }
1589
3280af22 1590 if (PL_main_root) {
3280af22 1591 op_free(PL_main_root);
5f66b61c 1592 PL_main_root = NULL;
ff0cee69 1593 }
5f66b61c 1594 PL_main_start = NULL;
3280af22 1595 SvREFCNT_dec(PL_main_cv);
601f1833 1596 PL_main_cv = NULL;
79072805 1597
3280af22
NIS
1598 time(&PL_basetime);
1599 oldscope = PL_scopestack_ix;
599cee73 1600 PL_dowarn = G_WARN_OFF;
f86702cc 1601
14dd3ad8 1602 JMPENV_PUSH(ret);
6224f72b 1603 switch (ret) {
312caa8e 1604 case 0:
14dd3ad8 1605 parse_body(env,xsinit);
9ebf26ad 1606 if (PL_unitcheckav) {
3c10abe3 1607 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1608 }
1609 if (PL_checkav) {
ca7b837b 1610 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1611 call_list(oldscope, PL_checkav);
9ebf26ad 1612 }
14dd3ad8
GS
1613 ret = 0;
1614 break;
6224f72b
GS
1615 case 1:
1616 STATUS_ALL_FAILURE;
1617 /* FALL THROUGH */
1618 case 2:
1619 /* my_exit() was called */
3280af22 1620 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1621 LEAVE;
1622 FREETMPS;
3280af22 1623 PL_curstash = PL_defstash;
9ebf26ad 1624 if (PL_unitcheckav) {
3c10abe3 1625 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1626 }
1627 if (PL_checkav) {
ca7b837b 1628 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1629 call_list(oldscope, PL_checkav);
9ebf26ad 1630 }
37038d91 1631 ret = STATUS_EXIT;
14dd3ad8 1632 break;
6224f72b 1633 case 3:
bf49b057 1634 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1635 ret = 1;
1636 break;
6224f72b 1637 }
14dd3ad8
GS
1638 JMPENV_POP;
1639 return ret;
1640}
1641
4a5df386
NC
1642/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1643 miniperl, and we need to see those flags reflected in the values here. */
1644
1645/* What this returns is subject to change. Use the public interface in Config.
1646 */
1647static void
1648S_Internals_V(pTHX_ CV *cv)
1649{
1650 dXSARGS;
1651#ifdef LOCAL_PATCH_COUNT
1652 const int local_patch_count = LOCAL_PATCH_COUNT;
1653#else
1654 const int local_patch_count = 0;
1655#endif
2dc296d2 1656 const int entries = 3 + local_patch_count;
4a5df386
NC
1657 int i;
1658 static char non_bincompat_options[] =
1659# ifdef DEBUGGING
1660 " DEBUGGING"
1661# endif
1662# ifdef NO_MATHOMS
0d311fbe 1663 " NO_MATHOMS"
4a5df386
NC
1664# endif
1665# ifdef PERL_DISABLE_PMC
1666 " PERL_DISABLE_PMC"
1667# endif
1668# ifdef PERL_DONT_CREATE_GVSV
1669 " PERL_DONT_CREATE_GVSV"
1670# endif
9a044a43
NC
1671# ifdef PERL_EXTERNAL_GLOB
1672 " PERL_EXTERNAL_GLOB"
1673# endif
4a5df386
NC
1674# ifdef PERL_IS_MINIPERL
1675 " PERL_IS_MINIPERL"
1676# endif
1677# ifdef PERL_MALLOC_WRAP
1678 " PERL_MALLOC_WRAP"
1679# endif
1680# ifdef PERL_MEM_LOG
1681 " PERL_MEM_LOG"
1682# endif
1683# ifdef PERL_MEM_LOG_NOIMPL
1684 " PERL_MEM_LOG_NOIMPL"
1685# endif
c3cf41ec
NC
1686# ifdef PERL_PRESERVE_IVUV
1687 " PERL_PRESERVE_IVUV"
1688# endif
4a5df386
NC
1689# ifdef PERL_USE_DEVEL
1690 " PERL_USE_DEVEL"
1691# endif
1692# ifdef PERL_USE_SAFE_PUTENV
1693 " PERL_USE_SAFE_PUTENV"
1694# endif
de618ee4
NC
1695# ifdef USE_ATTRIBUTES_FOR_PERLIO
1696 " USE_ATTRIBUTES_FOR_PERLIO"
1697# endif
4a5df386
NC
1698# ifdef USE_FAST_STDIO
1699 " USE_FAST_STDIO"
1700# endif
98548bdf
NC
1701# ifdef USE_LOCALE
1702 " USE_LOCALE"
1703# endif
98548bdf
NC
1704# ifdef USE_LOCALE_CTYPE
1705 " USE_LOCALE_CTYPE"
1706# endif
5a8d8935
NC
1707# ifdef USE_PERL_ATOF
1708 " USE_PERL_ATOF"
1709# endif
0d311fbe
NC
1710# ifdef USE_SITECUSTOMIZE
1711 " USE_SITECUSTOMIZE"
1712# endif
4a5df386
NC
1713 ;
1714 PERL_UNUSED_ARG(cv);
1715 PERL_UNUSED_ARG(items);
1716
1717 EXTEND(SP, entries);
1718
1719 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1720 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1721 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1722
1723#ifdef __DATE__
1724# ifdef __TIME__
1725 PUSHs(Perl_newSVpvn_flags(aTHX_
1726 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1727 SVs_TEMP));
1728# else
1729 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1730 SVs_TEMP));
1731# endif
1732#else
1733 PUSHs(&PL_sv_undef);
1734#endif
1735
4a5df386
NC
1736 for (i = 1; i <= local_patch_count; i++) {
1737 /* This will be an undef, if PL_localpatches[i] is NULL. */
1738 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1739 }
1740
1741 XSRETURN(entries);
1742}
1743
be71fc8f
NC
1744#define INCPUSH_UNSHIFT 0x01
1745#define INCPUSH_ADD_OLD_VERS 0x02
1746#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1747#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1748#define INCPUSH_NOT_BASEDIR 0x10
1749#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1750#define INCPUSH_ADD_SUB_DIRS \
1751 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1752
312caa8e 1753STATIC void *
14dd3ad8 1754S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1755{
27da23d5 1756 dVAR;
2f9285f8 1757 PerlIO *rsfp;
312caa8e 1758 int argc = PL_origargc;
8f42b153 1759 char **argv = PL_origargv;
e1ec3a88 1760 const char *scriptname = NULL;
312caa8e 1761 VOL bool dosearch = FALSE;
c7030b81 1762 register char c;
737c24fc 1763 bool doextract = FALSE;
bd61b366 1764 const char *cddir = NULL;
ab019eaa 1765#ifdef USE_SITECUSTOMIZE
20ef40cf 1766 bool minus_f = FALSE;
ab019eaa 1767#endif
009d90df 1768 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1769 bool add_read_e_script = FALSE;
009d90df 1770
ca7b837b 1771 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1772
009d90df 1773 SvGROW(linestr_sv, 80);
76f68e9b 1774 sv_setpvs(linestr_sv,"");
312caa8e 1775
6224f72b 1776 init_main_stash();
54310121 1777
c7030b81
NC
1778 {
1779 const char *s;
6224f72b
GS
1780 for (argc--,argv++; argc > 0; argc--,argv++) {
1781 if (argv[0][0] != '-' || !argv[0][1])
1782 break;
6224f72b
GS
1783 s = argv[0]+1;
1784 reswitch:
47f56822 1785 switch ((c = *s)) {
729a02f2 1786 case 'C':
1d5472a9
GS
1787#ifndef PERL_STRICT_CR
1788 case '\r':
1789#endif
6224f72b
GS
1790 case ' ':
1791 case '0':
1792 case 'F':
1793 case 'a':
1794 case 'c':
1795 case 'd':
1796 case 'D':
1797 case 'h':
1798 case 'i':
1799 case 'l':
1800 case 'M':
1801 case 'm':
1802 case 'n':
1803 case 'p':
1804 case 's':
1805 case 'u':
1806 case 'U':
1807 case 'v':
599cee73
PM
1808 case 'W':
1809 case 'X':
6224f72b 1810 case 'w':
97bd5664 1811 if ((s = moreswitches(s)))
6224f72b
GS
1812 goto reswitch;
1813 break;
33b78306 1814
1dbad523 1815 case 't':
22f7c9c9 1816 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1817 if( !PL_tainting ) {
1818 PL_taint_warn = TRUE;
1819 PL_tainting = TRUE;
1820 }
1821 s++;
1822 goto reswitch;
6224f72b 1823 case 'T':
22f7c9c9 1824 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1825 PL_tainting = TRUE;
317ea90d 1826 PL_taint_warn = FALSE;
6224f72b
GS
1827 s++;
1828 goto reswitch;
f86702cc 1829
bc9b29db
RH
1830 case 'E':
1831 PL_minus_E = TRUE;
1832 /* FALL THROUGH */
6224f72b 1833 case 'e':
f20b2998 1834 forbid_setid('e', FALSE);
3280af22 1835 if (!PL_e_script) {
396482e1 1836 PL_e_script = newSVpvs("");
5486870f 1837 add_read_e_script = TRUE;
6224f72b
GS
1838 }
1839 if (*++s)
3280af22 1840 sv_catpv(PL_e_script, s);
6224f72b 1841 else if (argv[1]) {
3280af22 1842 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1843 argc--,argv++;
1844 }
1845 else
47f56822 1846 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1847 sv_catpvs(PL_e_script, "\n");
6224f72b 1848 break;
afe37c7d 1849
20ef40cf 1850 case 'f':
f5542d3a 1851#ifdef USE_SITECUSTOMIZE
20ef40cf 1852 minus_f = TRUE;
f5542d3a 1853#endif
20ef40cf
GA
1854 s++;
1855 goto reswitch;
1856
6224f72b 1857 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1858 forbid_setid('I', FALSE);
bd61b366 1859 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1860 argc--,argv++;
1861 }
6224f72b 1862 if (s && *s) {
0df16ed7 1863 STRLEN len = strlen(s);
55b4bc1c 1864 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1865 }
1866 else
a67e862a 1867 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1868 break;
6224f72b 1869 case 'S':
f20b2998 1870 forbid_setid('S', FALSE);
6224f72b
GS
1871 dosearch = TRUE;
1872 s++;
1873 goto reswitch;
1874 case 'V':
7edfd0ef
NC
1875 {
1876 SV *opts_prog;
1877
7edfd0ef 1878 if (*++s != ':') {
37ca4a5b 1879 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1880 }
1881 else {
1882 ++s;
1883 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1884 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1885 0, s, 0);
1886 s += strlen(s);
1887 }
37ca4a5b 1888 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1889 /* don't look for script or read stdin */
1890 scriptname = BIT_BUCKET;
1891 goto reswitch;
6224f72b 1892 }
6224f72b 1893 case 'x':
737c24fc 1894 doextract = TRUE;
6224f72b 1895 s++;
304334da 1896 if (*s)
f4c556ac 1897 cddir = s;
6224f72b
GS
1898 break;
1899 case 0:
1900 break;
1901 case '-':
1902 if (!*++s || isSPACE(*s)) {
1903 argc--,argv++;
1904 goto switch_end;
1905 }
1906 /* catch use of gnu style long options */
1907 if (strEQ(s, "version")) {
dd374669 1908 s = (char *)"v";
6224f72b
GS
1909 goto reswitch;
1910 }
1911 if (strEQ(s, "help")) {
dd374669 1912 s = (char *)"h";
6224f72b
GS
1913 goto reswitch;
1914 }
1915 s--;
1916 /* FALL THROUGH */
1917 default:
cea2e8a9 1918 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1919 }
1920 }
c7030b81
NC
1921 }
1922
6224f72b 1923 switch_end:
54310121 1924
c7030b81
NC
1925 {
1926 char *s;
1927
f675dbe5
CB
1928 if (
1929#ifndef SECURE_INTERNAL_GETENV
1930 !PL_tainting &&
1931#endif
cf756827 1932 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1933 {
74288ac8
GS
1934 while (isSPACE(*s))
1935 s++;
317ea90d 1936 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1937 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1938 PL_tainting = TRUE;
317ea90d
MS
1939 PL_taint_warn = FALSE;
1940 }
74288ac8 1941 else {
bd61b366 1942 char *popt_copy = NULL;
74288ac8 1943 while (s && *s) {
54913509 1944 const char *d;
74288ac8
GS
1945 while (isSPACE(*s))
1946 s++;
1947 if (*s == '-') {
1948 s++;
1949 if (isSPACE(*s))
1950 continue;
1951 }
4ea8f8fb 1952 d = s;
74288ac8
GS
1953 if (!*s)
1954 break;
2b622f1a 1955 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1956 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1957 while (++s && *s) {
1958 if (isSPACE(*s)) {
cf756827 1959 if (!popt_copy) {
bfa6c418
NC
1960 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1961 s = popt_copy + (s - d);
1962 d = popt_copy;
cf756827 1963 }
4ea8f8fb
MS
1964 *s++ = '\0';
1965 break;
1966 }
1967 }
1c4db469 1968 if (*d == 't') {
317ea90d
MS
1969 if( !PL_tainting ) {
1970 PL_taint_warn = TRUE;
1971 PL_tainting = TRUE;
1972 }
1c4db469 1973 } else {
97bd5664 1974 moreswitches(d);
1c4db469 1975 }
6224f72b 1976 }
6224f72b
GS
1977 }
1978 }
c7030b81 1979 }
a0d0e21e 1980
43c0c913 1981#if defined(USE_SITECUSTOMIZE)
20ef40cf 1982 if (!minus_f) {
43c0c913 1983 /* The games with local $! are to avoid setting errno if there is no
404ad9dc 1984 sitecustomize script. */
43c0c913
NC
1985# ifdef PERL_IS_MINIPERL
1986 AV *const inc = GvAV(PL_incgv);
1987 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
1988
1989 if (inc0) {
1990 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1991 Perl_newSVpvf(aTHX_
1992 "BEGIN { do {local $!; -f '%"SVf"/buildcustomize.pl'} && do '%"SVf"/buildcustomize.pl' }", *inc0, *inc0));
1993 }
1994# else
1995 /* SITELIB_EXP is a function call on Win32. */
404ad9dc 1996 const char *const sitelib = SITELIB_EXP;
29a861e7 1997 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1998 Perl_newSVpvf(aTHX_
1999 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
43c0c913 2000# endif
20ef40cf
GA
2001 }
2002#endif
2003
6224f72b
GS
2004 if (!scriptname)
2005 scriptname = argv[0];
3280af22 2006 if (PL_e_script) {
6224f72b
GS
2007 argc++,argv--;
2008 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2009 }
bd61b366 2010 else if (scriptname == NULL) {
6224f72b
GS
2011#ifdef MSDOS
2012 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2013 moreswitches("h");
6224f72b
GS
2014#endif
2015 scriptname = "-";
2016 }
2017
b7975bdd
NC
2018 /* Set $^X early so that it can be used for relocatable paths in @INC */
2019 assert (!PL_tainted);
2020 TAINT;
2021 S_set_caret_X(aTHX);
2022 TAINT_NOT;
2cace6ac 2023 init_perllib();
6224f72b 2024
a52eba0e 2025 {
f20b2998 2026 bool suidscript = FALSE;
829372d3 2027
cc69b689 2028 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2029
2f9285f8 2030 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2031 linestr_sv, rsfp);
6224f72b 2032
64ca3a65 2033#ifndef PERL_MICRO
a52eba0e
NC
2034# if defined(SIGCHLD) || defined(SIGCLD)
2035 {
2036# ifndef SIGCHLD
2037# define SIGCHLD SIGCLD
2038# endif
2039 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2040 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2041 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2042 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2043 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2044 }
0b5b802d 2045 }
a52eba0e 2046# endif
64ca3a65 2047#endif
0b5b802d 2048
737c24fc 2049 if (doextract) {
faef540c 2050
f20b2998 2051 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2052 setuid scripts. */
2053 forbid_setid('x', suidscript);
f20b2998 2054 /* Hence you can't get here if suidscript is true */
faef540c 2055
2f9285f8 2056 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2057 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2058 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2059 }
f4c556ac 2060 }
6224f72b 2061
ea726b52 2062 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2063 CvUNIQUE_on(PL_compcv);
2064
dd2155a4 2065 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2066
dd69841b
BB
2067 PL_isarev = newHV();
2068
0c4f7ff0 2069 boot_core_PerlIO();
6224f72b 2070 boot_core_UNIVERSAL();
e1a479c5 2071 boot_core_mro();
4a5df386 2072 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2073
2074 if (xsinit)
acfe0abc 2075 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2076#ifndef PERL_MICRO
d0d72822 2077#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2078 init_os_extras();
6224f72b 2079#endif
64ca3a65 2080#endif
6224f72b 2081
29209bc5 2082#ifdef USE_SOCKS
1b9c9cf5
DH
2083# ifdef HAS_SOCKS5_INIT
2084 socks5_init(argv[0]);
2085# else
29209bc5 2086 SOCKSinit(argv[0]);
1b9c9cf5 2087# endif
ac27b0f5 2088#endif
29209bc5 2089
6224f72b
GS
2090 init_predump_symbols();
2091 /* init_postdump_symbols not currently designed to be called */
2092 /* more than once (ENV isn't cleared first, for example) */
2093 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2094 if (!PL_do_undump)
6224f72b
GS
2095 init_postdump_symbols(argc,argv,env);
2096
27da23d5
JH
2097 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2098 * or explicitly in some platforms.
085a54d9 2099 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2100 * look like the user wants to use UTF-8. */
a0fd4948 2101#if defined(__SYMBIAN32__)
27da23d5
JH
2102 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2103#endif
e27b5b51 2104# ifndef PERL_IS_MINIPERL
06e66572
JH
2105 if (PL_unicode) {
2106 /* Requires init_predump_symbols(). */
a05d7ebb 2107 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2108 IO* io;
2109 PerlIO* fp;
2110 SV* sv;
2111
a05d7ebb 2112 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2113 * and the default open disciplines. */
a05d7ebb
JH
2114 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2115 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2116 (fp = IoIFP(io)))
2117 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2118 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2119 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2120 (fp = IoOFP(io)))
2121 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2122 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2123 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2124 (fp = IoOFP(io)))
2125 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2126 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2127 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2128 SVt_PV)))) {
a05d7ebb
JH
2129 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2130 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2131 if (in) {
2132 if (out)
76f68e9b 2133 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2134 else
76f68e9b 2135 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2136 }
2137 else if (out)
76f68e9b 2138 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2139 SvSETMAGIC(sv);
2140 }
b310b053
JH
2141 }
2142 }
e27b5b51 2143#endif
b310b053 2144
c7030b81
NC
2145 {
2146 const char *s;
4ffa73a3
JH
2147 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2148 if (strEQ(s, "unsafe"))
2149 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2150 else if (strEQ(s, "safe"))
2151 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2152 else
2153 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2154 }
c7030b81 2155 }
4ffa73a3 2156
81d86705 2157#ifdef PERL_MAD
c7030b81
NC
2158 {
2159 const char *s;
81d86705
NC
2160 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2161 PL_madskills = 1;
2162 PL_minus_c = 1;
2163 if (!s || !s[0])
2164 PL_xmlfp = PerlIO_stdout();
2165 else {
2166 PL_xmlfp = PerlIO_open(s, "w");
2167 if (!PL_xmlfp)
2168 Perl_croak(aTHX_ "Can't open %s", s);
2169 }
1a9a51d4 2170 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2171 }
c7030b81
NC
2172 }
2173
2174 {
2175 const char *s;
81d86705
NC
2176 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2177 PL_madskills = atoi(s);
1a9a51d4 2178 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2179 }
c7030b81 2180 }
81d86705
NC
2181#endif
2182
8eaa0acf 2183 lex_start(linestr_sv, rsfp, 0);
219f7226 2184 PL_subname = newSVpvs("main");
6224f72b 2185
5486870f
DM
2186 if (add_read_e_script)
2187 filter_add(read_e_script, NULL);
2188
6224f72b
GS
2189 /* now parse the script */
2190
93189314 2191 SETERRNO(0,SS_NORMAL);
28ac2b49 2192 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2193 if (PL_minus_c)
cea2e8a9 2194 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2195 else {
cea2e8a9 2196 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2197 PL_origfilename);
6224f72b
GS
2198 }
2199 }
57843af0 2200 CopLINE_set(PL_curcop, 0);
3280af22 2201 PL_curstash = PL_defstash;
3280af22
NIS
2202 if (PL_e_script) {
2203 SvREFCNT_dec(PL_e_script);
a0714e2c 2204 PL_e_script = NULL;
6224f72b
GS
2205 }
2206
3280af22 2207 if (PL_do_undump)
6224f72b
GS
2208 my_unexec();
2209
57843af0
GS
2210 if (isWARN_ONCE) {
2211 SAVECOPFILE(PL_curcop);
2212 SAVECOPLINE(PL_curcop);
3280af22 2213 gv_check(PL_defstash);
57843af0 2214 }
6224f72b
GS
2215
2216 LEAVE;
2217 FREETMPS;
2218
2219#ifdef MYMALLOC
f6a607bc
RGS
2220 {
2221 const char *s;
6224f72b
GS
2222 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2223 dump_mstats("after compilation:");
f6a607bc 2224 }
6224f72b
GS
2225#endif
2226
2227 ENTER;
febb3a6d 2228 PL_restartjmpenv = NULL;
3280af22 2229 PL_restartop = 0;
312caa8e 2230 return NULL;
6224f72b
GS
2231}
2232
954c1994
GS
2233/*
2234=for apidoc perl_run
2235
2236Tells a Perl interpreter to run. See L<perlembed>.
2237
2238=cut
2239*/
2240
6224f72b 2241int
0cb96387 2242perl_run(pTHXx)
6224f72b 2243{
97aff369 2244 dVAR;
6224f72b 2245 I32 oldscope;
14dd3ad8 2246 int ret = 0;
db36c5a1 2247 dJMPENV;
6224f72b 2248
7918f24d
NC
2249 PERL_ARGS_ASSERT_PERL_RUN;
2250#ifndef MULTIPLICITY
ed6c66dd 2251 PERL_UNUSED_ARG(my_perl);
7918f24d 2252#endif
9d4ba2ae 2253
3280af22 2254 oldscope = PL_scopestack_ix;
96e176bf
CL
2255#ifdef VMS
2256 VMSISH_HUSHED = 0;
2257#endif
6224f72b 2258
14dd3ad8 2259 JMPENV_PUSH(ret);
6224f72b
GS
2260 switch (ret) {
2261 case 1:
2262 cxstack_ix = -1; /* start context stack again */
312caa8e 2263 goto redo_body;
14dd3ad8 2264 case 0: /* normal completion */
14dd3ad8
GS
2265 redo_body:
2266 run_body(oldscope);
14dd3ad8
GS
2267 /* FALL THROUGH */
2268 case 2: /* my_exit() */
3280af22 2269 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2270 LEAVE;
2271 FREETMPS;
3280af22 2272 PL_curstash = PL_defstash;
3a1ee7e8 2273 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2274 PL_endav && !PL_minus_c) {
ca7b837b 2275 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2276 call_list(oldscope, PL_endav);
9ebf26ad 2277 }
6224f72b
GS
2278#ifdef MYMALLOC
2279 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2280 dump_mstats("after execution: ");
2281#endif
37038d91 2282 ret = STATUS_EXIT;
14dd3ad8 2283 break;
6224f72b 2284 case 3:
312caa8e
CS
2285 if (PL_restartop) {
2286 POPSTACK_TO(PL_mainstack);
2287 goto redo_body;
6224f72b 2288 }
bf49b057 2289 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2290 FREETMPS;
14dd3ad8
GS
2291 ret = 1;
2292 break;
6224f72b
GS
2293 }
2294
14dd3ad8
GS
2295 JMPENV_POP;
2296 return ret;
312caa8e
CS
2297}
2298
dd374669 2299STATIC void
14dd3ad8
GS
2300S_run_body(pTHX_ I32 oldscope)
2301{
97aff369 2302 dVAR;
6224f72b 2303 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2304 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2305
3280af22 2306 if (!PL_restartop) {
81d86705
NC
2307#ifdef PERL_MAD
2308 if (PL_xmlfp) {
2309 xmldump_all();
2310 exit(0); /* less likely to core dump than my_exit(0) */
2311 }
2312#endif
cf2782cd 2313#ifdef DEBUGGING
f0e3f042
CS
2314 if (DEBUG_x_TEST || DEBUG_B_TEST)
2315 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2316 if (!DEBUG_q_TEST)
2317 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2318#endif
6224f72b 2319
3280af22 2320 if (PL_minus_c) {
bf49b057 2321 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2322 my_exit(0);
2323 }
3280af22 2324 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2325 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2326 if (PL_initav) {
ca7b837b 2327 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2328 call_list(oldscope, PL_initav);
9ebf26ad 2329 }
f1fac472
NC
2330#ifdef PERL_DEBUG_READONLY_OPS
2331 Perl_pending_Slabs_to_ro(aTHX);
2332#endif
6224f72b
GS
2333 }
2334
2335 /* do it */
2336
ca7b837b 2337 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2338
3280af22 2339 if (PL_restartop) {
febb3a6d 2340 PL_restartjmpenv = NULL;
533c011a 2341 PL_op = PL_restartop;
3280af22 2342 PL_restartop = 0;
cea2e8a9 2343 CALLRUNOPS(aTHX);
6224f72b 2344 }
3280af22
NIS
2345 else if (PL_main_start) {
2346 CvDEPTH(PL_main_cv) = 1;
533c011a 2347 PL_op = PL_main_start;
cea2e8a9 2348 CALLRUNOPS(aTHX);
6224f72b 2349 }
f6b3007c
JH
2350 my_exit(0);
2351 /* NOTREACHED */
6224f72b
GS
2352}
2353
954c1994 2354/*
ccfc67b7
JH
2355=head1 SV Manipulation Functions
2356
954c1994
GS
2357=for apidoc p||get_sv
2358
64ace3f8
NC
2359Returns the SV of the specified Perl scalar. C<flags> are passed to
2360C<gv_fetchpv>. If C<GV_ADD> is set and the
2361Perl variable does not exist then it will be created. If C<flags> is zero
2362and the variable does not exist then NULL is returned.
954c1994
GS
2363
2364=cut
2365*/
2366
6224f72b 2367SV*
64ace3f8 2368Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2369{
2370 GV *gv;
7918f24d
NC
2371
2372 PERL_ARGS_ASSERT_GET_SV;
2373
64ace3f8 2374 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2375 if (gv)
2376 return GvSV(gv);
a0714e2c 2377 return NULL;
6224f72b
GS
2378}
2379
954c1994 2380/*
ccfc67b7
JH
2381=head1 Array Manipulation Functions
2382
954c1994
GS
2383=for apidoc p||get_av
2384
f0b90de1
SF
2385Returns the AV of the specified Perl global or package array with the given
2386name (so it won't work on lexical variables). C<flags> are passed
2387to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2388Perl variable does not exist then it will be created. If C<flags> is zero
2389and the variable does not exist then NULL is returned.
954c1994 2390
f0b90de1
SF
2391Perl equivalent: C<@{"$name"}>.
2392
954c1994
GS
2393=cut
2394*/
2395
6224f72b 2396AV*
cbfd0a87 2397Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2398{
cbfd0a87 2399 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2400
2401 PERL_ARGS_ASSERT_GET_AV;
2402
cbfd0a87 2403 if (flags)
6224f72b
GS
2404 return GvAVn(gv);
2405 if (gv)
2406 return GvAV(gv);
7d49f689 2407 return NULL;
6224f72b
GS
2408}
2409
954c1994 2410/*
ccfc67b7
JH
2411=head1 Hash Manipulation Functions
2412
954c1994
GS
2413=for apidoc p||get_hv
2414
6673a63c
NC
2415Returns the HV of the specified Perl hash. C<flags> are passed to
2416C<gv_fetchpv>. If C<GV_ADD> is set and the
2417Perl variable does not exist then it will be created. If C<flags> is zero
2418and the variable does not exist then NULL is returned.
954c1994
GS
2419
2420=cut
2421*/
2422
6224f72b 2423HV*
6673a63c 2424Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2425{
6673a63c 2426 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2427
2428 PERL_ARGS_ASSERT_GET_HV;
2429
6673a63c 2430 if (flags)
a0d0e21e
LW
2431 return GvHVn(gv);
2432 if (gv)
2433 return GvHV(gv);
5c284bb0 2434 return NULL;
a0d0e21e
LW
2435}
2436
954c1994 2437/*
ccfc67b7
JH
2438=head1 CV Manipulation Functions
2439
780a5241
NC
2440=for apidoc p||get_cvn_flags
2441
2442Returns the CV of the specified Perl subroutine. C<flags> are passed to
2443C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2444exist then it will be declared (which has the same effect as saying
2445C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2446then NULL is returned.
2447
954c1994
GS
2448=for apidoc p||get_cv
2449
780a5241 2450Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2451
2452=cut
2453*/
2454
a0d0e21e 2455CV*
780a5241 2456Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2457{
780a5241 2458 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2459 /* XXX this is probably not what they think they're getting.
2460 * It has the same effect as "sub name;", i.e. just a forward
2461 * declaration! */
7918f24d
NC
2462
2463 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2464
780a5241 2465 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2466 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2467 return newSUB(start_subparse(FALSE, 0),
780a5241 2468 newSVOP(OP_CONST, 0, sv),
5f66b61c 2469 NULL, NULL);
780a5241 2470 }
a0d0e21e 2471 if (gv)
8ebc5c01 2472 return GvCVu(gv);
601f1833 2473 return NULL;
a0d0e21e
LW
2474}
2475
2c67934f
NC
2476/* Nothing in core calls this now, but we can't replace it with a macro and
2477 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2478CV*
2479Perl_get_cv(pTHX_ const char *name, I32 flags)
2480{
7918f24d
NC
2481 PERL_ARGS_ASSERT_GET_CV;
2482
780a5241
NC
2483 return get_cvn_flags(name, strlen(name), flags);
2484}
2485
79072805
LW
2486/* Be sure to refetch the stack pointer after calling these routines. */
2487
954c1994 2488/*
ccfc67b7
JH
2489
2490=head1 Callback Functions
2491
954c1994
GS
2492=for apidoc p||call_argv
2493
f0b90de1
SF
2494Performs a callback to the specified named and package-scoped Perl subroutine
2495with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2496
2497Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2498
2499=cut
2500*/
2501
a0d0e21e 2502I32
8f42b153 2503Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2504
8ac85365
NIS
2505 /* See G_* flags in cop.h */
2506 /* null terminated arg list */
8990e307 2507{
97aff369 2508 dVAR;
a0d0e21e 2509 dSP;
8990e307 2510
7918f24d
NC
2511 PERL_ARGS_ASSERT_CALL_ARGV;
2512
924508f0 2513 PUSHMARK(SP);
a0d0e21e 2514 if (argv) {
8990e307 2515 while (*argv) {
6e449a3a 2516 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2517 argv++;
2518 }
a0d0e21e 2519 PUTBACK;
8990e307 2520 }
864dbfa3 2521 return call_pv(sub_name, flags);
8990e307
LW
2522}
2523
954c1994
GS
2524/*
2525=for apidoc p||call_pv
2526
2527Performs a callback to the specified Perl sub. See L<perlcall>.
2528
2529=cut
2530*/
2531
a0d0e21e 2532I32
864dbfa3 2533Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2534 /* name of the subroutine */
2535 /* See G_* flags in cop.h */
a0d0e21e 2536{
7918f24d
NC
2537 PERL_ARGS_ASSERT_CALL_PV;
2538
0da0e728 2539 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2540}
2541
954c1994
GS
2542/*
2543=for apidoc p||call_method
2544
2545Performs a callback to the specified Perl method. The blessed object must
2546be on the stack. See L<perlcall>.
2547
2548=cut
2549*/
2550
a0d0e21e 2551I32
864dbfa3 2552Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2553 /* name of the subroutine */
2554 /* See G_* flags in cop.h */
a0d0e21e 2555{
46ca9bac 2556 STRLEN len;
7918f24d
NC
2557 PERL_ARGS_ASSERT_CALL_METHOD;
2558
46ca9bac 2559 len = strlen(methname);
2560
2561 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2562 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2563}
2564
2565/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2566/*
2567=for apidoc p||call_sv
2568
2569Performs a callback to the Perl sub whose name is in the SV. See
2570L<perlcall>.
2571
2572=cut
2573*/
2574
a0d0e21e 2575I32
001d637e 2576Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2577 /* See G_* flags in cop.h */
a0d0e21e 2578{
27da23d5 2579 dVAR; dSP;
a0d0e21e 2580 LOGOP myop; /* fake syntax tree node */
968b3946 2581 UNOP method_op;
aa689395 2582 I32 oldmark;
8ea43dc8 2583 VOL I32 retval = 0;
a0d0e21e 2584 I32 oldscope;
54310121 2585 bool oldcatch = CATCH_GET;
6224f72b 2586 int ret;
c4420975 2587 OP* const oldop = PL_op;
db36c5a1 2588 dJMPENV;
1e422769 2589
7918f24d
NC
2590 PERL_ARGS_ASSERT_CALL_SV;
2591
a0d0e21e
LW
2592 if (flags & G_DISCARD) {
2593 ENTER;
2594 SAVETMPS;
2595 }
2f8edad0
NC
2596 if (!(flags & G_WANT)) {
2597 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2598 */
2599 flags |= G_SCALAR;
2600 }
a0d0e21e 2601
aa689395 2602 Zero(&myop, 1, LOGOP);
5f66b61c 2603 myop.op_next = NULL;
f51d4af5 2604 if (!(flags & G_NOARGS))
aa689395 2605 myop.op_flags |= OPf_STACKED;
4f911530 2606 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2607 SAVEOP();
533c011a 2608 PL_op = (OP*)&myop;
aa689395 2609
3280af22
NIS
2610 EXTEND(PL_stack_sp, 1);
2611 *++PL_stack_sp = sv;
aa689395 2612 oldmark = TOPMARK;
3280af22 2613 oldscope = PL_scopestack_ix;
a0d0e21e 2614
3280af22 2615 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2616 /* Handle first BEGIN of -d. */
3280af22 2617 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2618 /* Try harder, since this may have been a sighandler, thus
2619 * curstash may be meaningless. */
ea726b52 2620 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2621 && !(flags & G_NODEBUG))
533c011a 2622 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2623
968b3946
GS
2624 if (flags & G_METHOD) {
2625 Zero(&method_op, 1, UNOP);
2626 method_op.op_next = PL_op;
2627 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2628 method_op.op_type = OP_METHOD;
968b3946 2629 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2630 myop.op_type = OP_ENTERSUB;
f39d0b86 2631 PL_op = (OP*)&method_op;
968b3946
GS
2632 }
2633
312caa8e 2634 if (!(flags & G_EVAL)) {
0cdb2077 2635 CATCH_SET(TRUE);
d6f07c05 2636 CALL_BODY_SUB((OP*)&myop);
312caa8e 2637 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2638 CATCH_SET(oldcatch);
312caa8e
CS
2639 }
2640 else {
d78bda3d 2641 myop.op_other = (OP*)&myop;
3280af22 2642 PL_markstack_ptr--;
edb2152a 2643 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2644 PL_markstack_ptr++;
a0d0e21e 2645
14dd3ad8 2646 JMPENV_PUSH(ret);
edb2152a 2647
6224f72b
GS
2648 switch (ret) {
2649 case 0:
14dd3ad8 2650 redo_body:
d6f07c05 2651 CALL_BODY_SUB((OP*)&myop);
312caa8e 2652 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2653 if (!(flags & G_KEEPERR)) {
ab69dbc2 2654 CLEAR_ERRSV();
8433848b 2655 }
a0d0e21e 2656 break;
6224f72b 2657 case 1:
f86702cc 2658 STATUS_ALL_FAILURE;
a0d0e21e 2659 /* FALL THROUGH */
6224f72b 2660 case 2:
a0d0e21e 2661 /* my_exit() was called */
3280af22 2662 PL_curstash = PL_defstash;
a0d0e21e 2663 FREETMPS;
14dd3ad8 2664 JMPENV_POP;
f86702cc 2665 my_exit_jump();
a0d0e21e 2666 /* NOTREACHED */
6224f72b 2667 case 3:
3280af22 2668 if (PL_restartop) {
febb3a6d 2669 PL_restartjmpenv = NULL;
533c011a 2670 PL_op = PL_restartop;
3280af22 2671 PL_restartop = 0;
312caa8e 2672 goto redo_body;
a0d0e21e 2673 }
3280af22 2674 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2675 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2676 retval = 0;
2677 else {
2678 retval = 1;
3280af22 2679 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2680 }
312caa8e 2681 break;
a0d0e21e 2682 }
a0d0e21e 2683
edb2152a
NC
2684 if (PL_scopestack_ix > oldscope)
2685 delete_eval_scope();
14dd3ad8 2686 JMPENV_POP;
a0d0e21e 2687 }
1e422769 2688
a0d0e21e 2689 if (flags & G_DISCARD) {
3280af22 2690 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2691 retval = 0;
2692 FREETMPS;
2693 LEAVE;
2694 }
533c011a 2695 PL_op = oldop;
a0d0e21e
LW
2696 return retval;
2697}
2698
6e72f9df 2699/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2700
954c1994
GS
2701/*
2702=for apidoc p||eval_sv
2703
be064c4a
DM
2704Tells Perl to C<eval> the string in the SV. It supports the same flags
2705as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2706
2707=cut
2708*/
2709
a0d0e21e 2710I32
864dbfa3 2711Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2712
8ac85365 2713 /* See G_* flags in cop.h */
a0d0e21e 2714{
97aff369 2715 dVAR;
924508f0 2716 dSP;
a0d0e21e 2717 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2718 VOL I32 oldmark = SP - PL_stack_base;
2719 VOL I32 retval = 0;
6224f72b 2720 int ret;
c4420975 2721 OP* const oldop = PL_op;
db36c5a1 2722 dJMPENV;
84902520 2723
7918f24d
NC
2724 PERL_ARGS_ASSERT_EVAL_SV;
2725
4633a7c4
LW
2726 if (flags & G_DISCARD) {
2727 ENTER;
2728 SAVETMPS;
2729 }
2730
462e5cf6 2731 SAVEOP();
533c011a
NIS
2732 PL_op = (OP*)&myop;
2733 Zero(PL_op, 1, UNOP);
3280af22
NIS
2734 EXTEND(PL_stack_sp, 1);
2735 *++PL_stack_sp = sv;
79072805 2736
4633a7c4
LW
2737 if (!(flags & G_NOARGS))
2738 myop.op_flags = OPf_STACKED;
5f66b61c 2739 myop.op_next = NULL;
6e72f9df 2740 myop.op_type = OP_ENTEREVAL;
4f911530 2741 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2742 if (flags & G_KEEPERR)
2743 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2744
dedbcade
DM
2745 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2746 * before a PUSHEVAL, which corrupts the stack after a croak */
2747 TAINT_PROPER("eval_sv()");
2748
14dd3ad8 2749 JMPENV_PUSH(ret);
6224f72b
GS
2750 switch (ret) {
2751 case 0:
14dd3ad8 2752 redo_body:
2ba65d5f
DM
2753 if (PL_op == (OP*)(&myop)) {
2754 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2755 if (!PL_op)
2756 goto fail; /* failed in compilation */
2757 }
4aca2f62 2758 CALLRUNOPS(aTHX);
312caa8e 2759 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2760 if (!(flags & G_KEEPERR)) {
ab69dbc2 2761 CLEAR_ERRSV();
8433848b 2762 }
4633a7c4 2763 break;
6224f72b 2764 case 1:
f86702cc 2765 STATUS_ALL_FAILURE;
4633a7c4 2766 /* FALL THROUGH */
6224f72b 2767 case 2:
4633a7c4 2768 /* my_exit() was called */
3280af22 2769 PL_curstash = PL_defstash;
4633a7c4 2770 FREETMPS;
14dd3ad8 2771 JMPENV_POP;
f86702cc 2772 my_exit_jump();
4633a7c4 2773 /* NOTREACHED */
6224f72b 2774 case 3:
3280af22 2775 if (PL_restartop) {
febb3a6d 2776 PL_restartjmpenv = NULL;
533c011a 2777 PL_op = PL_restartop;
3280af22 2778 PL_restartop = 0;
312caa8e 2779 goto redo_body;
4633a7c4 2780 }
4aca2f62 2781 fail:
3280af22 2782 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2783 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2784 retval = 0;
2785 else {
2786 retval = 1;
3280af22 2787 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2788 }
312caa8e 2789 break;
4633a7c4
LW
2790 }
2791
14dd3ad8 2792 JMPENV_POP;
4633a7c4 2793 if (flags & G_DISCARD) {
3280af22 2794 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2795 retval = 0;
2796 FREETMPS;
2797 LEAVE;
2798 }
533c011a 2799 PL_op = oldop;
4633a7c4
LW
2800 return retval;
2801}
2802
954c1994
GS
2803/*
2804=for apidoc p||eval_pv
2805
2806Tells Perl to C<eval> the given string and return an SV* result.
2807
2808=cut
2809*/
2810
137443ea 2811SV*
864dbfa3 2812Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2813{
97aff369 2814 dVAR;
137443ea
PP
2815 dSP;
2816 SV* sv = newSVpv(p, 0);
2817
7918f24d
NC
2818 PERL_ARGS_ASSERT_EVAL_PV;
2819
864dbfa3 2820 eval_sv(sv, G_SCALAR);
137443ea
PP
2821 SvREFCNT_dec(sv);
2822
2823 SPAGAIN;
2824 sv = POPs;
2825 PUTBACK;
2826
2d8e6c8d 2827 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2828 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2829 }
137443ea
PP
2830
2831 return sv;
2832}
2833
4633a7c4
LW
2834/* Require a module. */
2835
954c1994 2836/*
ccfc67b7
JH
2837=head1 Embedding Functions
2838
954c1994
GS
2839=for apidoc p||require_pv
2840
7d3fb230
BS
2841Tells Perl to C<require> the file named by the string argument. It is
2842analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2843implemented that way; consider using load_module instead.
954c1994 2844
7d3fb230 2845=cut */
954c1994 2846
4633a7c4 2847void
864dbfa3 2848Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2849{
97aff369 2850 dVAR;
d3acc0f7 2851 dSP;
97aff369 2852 SV* sv;
7918f24d
NC
2853
2854 PERL_ARGS_ASSERT_REQUIRE_PV;
2855
e788e7d3 2856 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2857 PUTBACK;
be41e5d9
NC
2858 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2859 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2860 SPAGAIN;
2861 POPSTACK;
79072805
LW
2862}
2863
76e3520e 2864STATIC void
e1ec3a88 2865S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2866{
ab821d7f 2867 /* This message really ought to be max 23 lines.
75c72d73 2868 * Removed -h because the user already knows that option. Others? */
fb73857a 2869
1566c39d
NC
2870 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2871 minimum of 509 character string literals. */
27da23d5 2872 static const char * const usage_msg[] = {
1566c39d
NC
2873" -0[octal] specify record separator (\\0, if no argument)\n"
2874" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2875" -C[number/list] enables the listed Unicode features\n"
2876" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2877" -d[:debugger] run program under debugger\n"
2878" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2879" -e program one line of program (several -e's allowed, omit programfile)\n"
2880" -E program like -e, but enables all optional features\n"
2881" -f don't do $sitelib/sitecustomize.pl at startup\n"
2882" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2883" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2884" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2885" -l[octal] enable line ending processing, specifies line terminator\n"
2886" -[mM][-]module execute \"use/no module...\" before executing program\n"
2887" -n assume \"while (<>) { ... }\" loop around program\n"
2888" -p assume loop like -n but print line also, like sed\n"
2889" -s enable rudimentary parsing for switches after programfile\n"
2890" -S look for programfile using PATH environment variable\n",
2891" -t enable tainting warnings\n"
2892" -T enable tainting checks\n"
2893" -u dump core after parsing program\n"
2894" -U allow unsafe operations\n"
2895" -v print version, patchlevel and license\n"
2896" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2897" -w enable many useful warnings\n"
1566c39d
NC
2898" -W enable all warnings\n"
2899" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2900" -X disable all warnings\n"
2901" \n"
2902"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2903NULL
2904};
27da23d5 2905 const char * const *p = usage_msg;
1566c39d 2906 PerlIO *out = PerlIO_stdout();
fb73857a 2907
7918f24d
NC
2908 PERL_ARGS_ASSERT_USAGE;
2909
1566c39d
NC
2910 PerlIO_printf(out,
2911 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2912 name);
fb73857a 2913 while (*p)
1566c39d 2914 PerlIO_puts(out, *p++);
4633a7c4
LW
2915}
2916
b4ab917c
DM
2917/* convert a string of -D options (or digits) into an int.
2918 * sets *s to point to the char after the options */
2919
2920#ifdef DEBUGGING
2921int
e1ec3a88 2922Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2923{
27da23d5 2924 static const char * const usage_msgd[] = {
651b8f1a
NC
2925 " Debugging flag values: (see also -d)\n"
2926 " p Tokenizing and parsing (with v, displays parse stack)\n"
2927 " s Stack snapshots (with v, displays all stacks)\n"
2928 " l Context (loop) stack processing\n"
2929 " t Trace execution\n"
2930 " o Method and overloading resolution\n",
2931 " c String/numeric conversions\n"
2932 " P Print profiling info, source file input state\n"
2933 " m Memory and SV allocation\n"
2934 " f Format processing\n"
2935 " r Regular expression parsing and execution\n"
2936 " x Syntax tree dump\n",
2937 " u Tainting checks\n"
2938 " H Hash dump -- usurps values()\n"
2939 " X Scratchpad allocation\n"
2940 " D Cleaning up\n"
2941 " T Tokenising\n"
2942 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2943 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2944 " v Verbose: use in conjunction with other flags\n"
2945 " C Copy On Write\n"
2946 " A Consistency checks on internal structures\n"
2947 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2948 " M trace smart match resolution\n"
2949 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2950 NULL
2951 };
b4ab917c 2952 int i = 0;
7918f24d
NC
2953
2954 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2955
b4ab917c
DM
2956 if (isALPHA(**s)) {
2957 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2958 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2959
2960 for (; isALNUM(**s); (*s)++) {
c4420975 2961 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2962 if (d)
2963 i |= 1 << (d - debopts);
2964 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2965 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2966 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2967 }
2968 }
e6e64d9b 2969 else if (isDIGIT(**s)) {
b4ab917c
DM
2970 i = atoi(*s);
2971 for (; isALNUM(**s); (*s)++) ;
2972 }
ddcf8bc1 2973 else if (givehelp) {
06e869a4 2974 const char *const *p = usage_msgd;
651b8f1a 2975 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 2976 }
b4ab917c
DM
2977# ifdef EBCDIC
2978 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2979 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2980 "-Dp not implemented on this platform\n");
2981# endif
2982 return i;
2983}
2984#endif
2985
79072805
LW
2986/* This routine handles any switches that can be given during run */
2987
c7030b81
NC
2988const char *
2989Perl_moreswitches(pTHX_ const char *s)
79072805 2990{
27da23d5 2991 dVAR;
84c133a0 2992 UV rschar;
0544e6df 2993 const char option = *s; /* used to remember option in -m/-M code */
79072805 2994
7918f24d
NC
2995 PERL_ARGS_ASSERT_MORESWITCHES;
2996
79072805
LW
2997 switch (*s) {
2998 case '0':
a863c7d1 2999 {
f2095865 3000 I32 flags = 0;
a3b680e6 3001 STRLEN numlen;
f2095865
JH
3002
3003 SvREFCNT_dec(PL_rs);
3004 if (s[1] == 'x' && s[2]) {
a3b680e6 3005 const char *e = s+=2;
f2095865
JH
3006 U8 *tmps;
3007
a3b680e6
AL
3008 while (*e)
3009 e++;
f2095865
JH
3010 numlen = e - s;
3011 flags = PERL_SCAN_SILENT_ILLDIGIT;
3012 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3013 if (s + numlen < e) {
3014 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3015 numlen = 0;
3016 s--;
3017 }
396482e1 3018 PL_rs = newSVpvs("");
c5661c80 3019 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3020 tmps = (U8*)SvPVX(PL_rs);
3021 uvchr_to_utf8(tmps, rschar);
3022 SvCUR_set(PL_rs, UNISKIP(rschar));
3023 SvUTF8_on(PL_rs);
3024 }
3025 else {
3026 numlen = 4;
3027 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3028 if (rschar & ~((U8)~0))
3029 PL_rs = &PL_sv_undef;
3030 else if (!rschar && numlen >= 2)
396482e1 3031 PL_rs = newSVpvs("");
f2095865
JH
3032 else {
3033 char ch = (char)rschar;
3034 PL_rs = newSVpvn(&ch, 1);
3035 }
3036 }
64ace3f8 3037 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3038 return s + numlen;
a863c7d1 3039 }
46487f74 3040 case 'C':
a05d7ebb 3041 s++;
dd374669 3042 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3043 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3044 PL_utf8cache = -1;
46487f74 3045 return s;
2304df62 3046 case 'F':
3280af22 3047 PL_minus_F = TRUE;
ebce5377
RGS
3048 PL_splitstr = ++s;
3049 while (*s && !isSPACE(*s)) ++s;
e49e380e 3050 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3051 return s;
79072805 3052 case 'a':
3280af22 3053 PL_minus_a = TRUE;
79072805
LW
3054 s++;
3055 return s;
3056 case 'c':
3280af22 3057 PL_minus_c = TRUE;
79072805
LW
3058 s++;
3059 return s;
3060 case 'd':
f20b2998 3061 forbid_setid('d', FALSE);
4633a7c4 3062 s++;
2cbb2ee1
RGS
3063
3064 /* -dt indicates to the debugger that threads will be used */
3065 if (*s == 't' && !isALNUM(s[1])) {
3066 ++s;
3067 my_setenv("PERL5DB_THREADED", "1");
3068 }
3069
70c94a19
RR
3070 /* The following permits -d:Mod to accepts arguments following an =
3071 in the fashion that -MSome::Mod does. */
3072 if (*s == ':' || *s == '=') {
b19934fb
NC
3073 const char *start;
3074 const char *end;
3075 SV *sv;
3076
3077 if (*++s == '-') {
3078 ++s;
3079 sv = newSVpvs("no Devel::");
3080 } else {
3081 sv = newSVpvs("use Devel::");
3082 }
3083
3084 start = s;
3085 end = s + strlen(s);
f85893a1 3086
b19934fb 3087 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3088 while(isALNUM(*s) || *s==':') ++s;
3089 if (*s != '=')
f85893a1 3090 sv_catpvn(sv, start, end - start);
70c94a19
RR
3091 else {
3092 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3093 /* Don't use NUL as q// delimiter here, this string goes in the
3094 * environment. */
3095 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3096 }
f85893a1 3097 s = end;
184f32ec 3098 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3099 SvREFCNT_dec(sv);
4633a7c4 3100 }
ed094faf 3101 if (!PL_perldb) {
3280af22 3102 PL_perldb = PERLDB_ALL;
a0d0e21e 3103 init_debugger();
ed094faf 3104 }
79072805
LW
3105 return s;
3106 case 'D':
0453d815 3107 {
79072805 3108#ifdef DEBUGGING
f20b2998 3109 forbid_setid('D', FALSE);
b4ab917c 3110 s++;
dd374669 3111 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3112#else /* !DEBUGGING */
0453d815 3113 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3114 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3115 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3116 for (s++; isALNUM(*s); s++) ;
79072805 3117#endif
79072805 3118 return s;
0453d815 3119 }
4633a7c4 3120 case 'h':
ac27b0f5 3121 usage(PL_origargv[0]);
7ca617d0 3122 my_exit(0);
79072805 3123 case 'i':
43c5f42d 3124 Safefree(PL_inplace);
c030f24b
GH
3125#if defined(__CYGWIN__) /* do backup extension automagically */
3126 if (*(s+1) == '\0') {
c86a4f2e 3127 PL_inplace = savepvs(".bak");
c030f24b
GH
3128 return s+1;
3129 }
3130#endif /* __CYGWIN__ */
5ef5d758 3131 {
d4c19fe8 3132 const char * const start = ++s;
5ef5d758
NC
3133 while (*s && !isSPACE(*s))
3134 ++s;
3135
3136 PL_inplace = savepvn(start, s - start);
3137 }
7b8d334a 3138 if (*s) {
5ef5d758 3139 ++s;
7b8d334a 3140 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3141 s++;
7b8d334a 3142 }
fb73857a 3143 return s;
4e49a025 3144 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3145 forbid_setid('I', FALSE);
fb73857a
PP
3146 ++s;
3147 while (*s && isSPACE(*s))
3148 ++s;
3149 if (*s) {
c7030b81 3150 const char *e, *p;
0df16ed7
GS
3151 p = s;
3152 /* ignore trailing spaces (possibly followed by other switches) */
3153 do {
3154 for (e = p; *e && !isSPACE(*e); e++) ;
3155 p = e;
3156 while (isSPACE(*p))
3157 p++;
3158 } while (*p && *p != '-');
55b4bc1c 3159 incpush(s, e-s,
e28f3139 3160 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3161 s = p;
3162 if (*s == '-')
3163 s++;
79072805
LW
3164 }
3165 else
a67e862a 3166 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3167 return s;
79072805 3168 case 'l':
3280af22 3169 PL_minus_l = TRUE;
79072805 3170 s++;
7889fe52
NIS
3171 if (PL_ors_sv) {
3172 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3173 PL_ors_sv = NULL;
7889fe52 3174 }
79072805 3175 if (isDIGIT(*s)) {
53305cf1 3176 I32 flags = 0;
a3b680e6 3177 STRLEN numlen;
396482e1 3178 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3179 numlen = 3 + (*s == '0');
3180 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3181 s += numlen;
3182 }
3183 else {
8bfdd7d9 3184 if (RsPARA(PL_rs)) {
396482e1 3185 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3186 }
3187 else {
8bfdd7d9 3188 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3189 }
79072805
LW
3190 }
3191 return s;
1a30305b 3192 case 'M':
f20b2998 3193 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3194 /* FALL THROUGH */
3195 case 'm':
f20b2998 3196 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3197 if (*++s) {
c7030b81 3198 const char *start;
b64cb68c 3199 const char *end;
11343788 3200 SV *sv;
e1ec3a88 3201 const char *use = "use ";
0544e6df 3202 bool colon = FALSE;
a5f75d66 3203 /* -M-foo == 'no foo' */
d0043bd1
NC
3204 /* Leading space on " no " is deliberate, to make both
3205 possibilities the same length. */
3206 if (*s == '-') { use = " no "; ++s; }
3207 sv = newSVpvn(use,4);
a5f75d66 3208 start = s;
1a30305b 3209 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3210 while(isALNUM(*s) || *s==':') {
3211 if( *s++ == ':' ) {
3212 if( *s == ':' )
3213 s++;
3214 else
3215 colon = TRUE;
3216 }
3217 }
3218 if (s == start)
3219 Perl_croak(aTHX_ "Module name required with -%c option",
3220 option);
3221 if (colon)
3222 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3223 "contains single ':'",
63da6837 3224 (int)(s - start), start, option);
b64cb68c 3225 end = s + strlen(s);
c07a80fd 3226 if (*s != '=') {
b64cb68c 3227 sv_catpvn(sv, start, end - start);
0544e6df 3228 if (option == 'm') {
c07a80fd 3229 if (*s != '\0')
cea2e8a9 3230 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3231 sv_catpvs( sv, " ()");
c07a80fd
PP
3232 }
3233 } else {
11343788 3234 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3235 /* Use NUL as q''-delimiter. */
3236 sv_catpvs(sv, " split(/,/,q\0");
3237 ++s;
3238 sv_catpvn(sv, s, end - s);
396482e1 3239 sv_catpvs(sv, "\0)");
c07a80fd 3240 }
b64cb68c 3241 s = end;
29a861e7 3242 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3243 }
3244 else
0544e6df 3245 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3246 return s;
79072805 3247 case 'n':
3280af22 3248 PL_minus_n = TRUE;
79072805
LW
3249 s++;
3250 return s;
3251 case 'p':
3280af22 3252 PL_minus_p = TRUE;
79072805
LW
3253 s++;
3254 return s;
3255 case 's':
f20b2998 3256 forbid_setid('s', FALSE);
3280af22 3257 PL_doswitches = TRUE;
79072805
LW
3258 s++;
3259 return s;
6537fe72
MS
3260 case 't':
3261 if (!PL_tainting)
22f7c9c9 3262 TOO_LATE_FOR('t');
6537fe72
MS
3263 s++;
3264 return s;
463ee0b2 3265 case 'T':
3280af22 3266 if (!PL_tainting)
22f7c9c9 3267 TOO_LATE_FOR('T');
463ee0b2
LW
3268 s++;
3269 return s;
79072805 3270 case 'u':
3280af22 3271 PL_do_undump = TRUE;
79072805
LW
3272 s++;
3273 return s;
3274 case 'U':
3280af22 3275 PL_unsafe = TRUE;
79072805
LW
3276 s++;
3277 return s;
3278 case 'v':
d7aa5382 3279 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3280 upg_version(PL_patchlevel, TRUE);
8e9464f1 3281#if !defined(DGUX)
46807d8e
YO
3282 {
3283 SV* level= vstringify(PL_patchlevel);
3284#ifdef PERL_PATCHNUM
23d483e2
NC
3285# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3286 SV *num = newSVpvs(PERL_PATCHNUM "*");
3287# else
3288 SV *num = newSVpvs(PERL_PATCHNUM);
3289# endif
46807d8e
YO
3290
3291 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3292 SvREFCNT_dec(level);
3293 level= num;
3294 } else {
d0a9311f 3295 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3296 SvREFCNT_dec(num);
3297 }
3298 #endif
3299 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3300 "\nThis is perl " STRINGIFY(PERL_REVISION)
3301 ", version " STRINGIFY(PERL_VERSION)
3302 ", subversion " STRINGIFY(PERL_SUBVERSION)
3303 " (%"SVf") built for " ARCHNAME, level
3304 );
46807d8e
YO
3305 SvREFCNT_dec(level);
3306 }
8e9464f1
JH
3307#else /* DGUX */
3308/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3309 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3310 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3311 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3312 PerlIO_printf(PerlIO_stdout(),
3313 Perl_form(aTHX_ " built under %s at %s %s\n",
3314 OSNAME, __DATE__, __TIME__));
3315 PerlIO_printf(PerlIO_stdout(),
3316 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3317 OSVERS));
8e9464f1 3318#endif /* !DGUX */
fb73857a
PP
3319#if defined(LOCAL_PATCH_COUNT)
3320 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3321 PerlIO_printf(PerlIO_stdout(),
3322 "\n(with %d registered patch%s, "
3323 "see perl -V for more detail)",
bb7a0f54 3324 LOCAL_PATCH_COUNT,
b0e47665 3325 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3326#endif
1a30305b 3327
b0e47665 3328 PerlIO_printf(PerlIO_stdout(),
010d7370 3329 "\n\nCopyright 1987-2011, Larry Wall\n");
79072805 3330#ifdef MSDOS
b0e47665
GS
3331 PerlIO_printf(PerlIO_stdout(),
3332 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3333#endif
3334#ifdef DJGPP
b0e47665
GS
3335 PerlIO_printf(PerlIO_stdout(),
3336 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3337 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3338#endif
79072805 3339#ifdef OS2
b0e47665
GS
3340 PerlIO_printf(PerlIO_stdout(),
3341 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3342 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3343#endif
79072805 3344#ifdef atarist
b0e47665
GS
3345 PerlIO_printf(PerlIO_stdout(),
3346 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3347#endif
a3f9223b 3348#ifdef __BEOS__
b0e47665
GS
3349 PerlIO_printf(PerlIO_stdout(),
3350 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3351#endif
1d84e8df 3352#ifdef MPE
b0e47665 3353 PerlIO_printf(PerlIO_stdout(),
e583a879 3354 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3355#endif
9d116dd7 3356#ifdef OEMVS
b0e47665
GS
3357 PerlIO_printf(PerlIO_stdout(),
3358 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3359#endif
495c5fdc 3360#ifdef __VOS__
b0e47665 3361 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3362 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3363#endif
092bebab 3364#ifdef __OPEN_VM
b0e47665
GS
3365 PerlIO_printf(PerlIO_stdout(),
3366 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3367#endif
a1a0e61e 3368#ifdef POSIX_BC
b0e47665
GS
3369 PerlIO_printf(PerlIO_stdout(),
3370 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3371#endif
f83d2536 3372#ifdef EPOC
b0e47665 3373 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3374 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3375#endif
e1caacb4 3376#ifdef UNDER_CE
b475b3e6
JH
3377 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3378 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3379 wce_hitreturn();
3380#endif
a0fd4948 3381#ifdef __SYMBIAN32__
27da23d5
JH
3382 PerlIO_printf(PerlIO_stdout(),
3383 "Symbian port by Nokia, 2004-2005\n");
3384#endif
baed7233
DL
3385#ifdef BINARY_BUILD_NOTICE
3386 BINARY_BUILD_NOTICE;
3387#endif
b0e47665
GS
3388 PerlIO_printf(PerlIO_stdout(),
3389 "\n\
79072805 3390Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3391GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3392Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3393this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3394Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3395 my_exit(0);
79072805 3396 case 'w':
b2e5e6ba 3397 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3398 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3399 }
599cee73
PM
3400 s++;
3401 return s;
3402 case 'W':
ac27b0f5 3403 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3404 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3405 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3406 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3407 s++;
3408 return s;
3409 case 'X':
ac27b0f5 3410 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3411 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3412 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3413 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3414 s++;
3415 return s;
a0d0e21e 3416 case '*':
79072805 3417 case ' ':
d3133c89
NC
3418 while( *s == ' ' )
3419 ++s;
3420 if (s[0] == '-') /* Additional switches on #! line. */
3421 return s+1;
79072805 3422 break;
a0d0e21e 3423 case '-':
79072805 3424 case 0:
51882d45 3425#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3426 case '\r':
3427#endif
79072805
LW
3428 case '\n':
3429 case '\t':
3430 break;
aa689395
PP
3431#ifdef ALTERNATE_SHEBANG
3432 case 'S': /* OS/2 needs -S on "extproc" line. */
3433 break;
3434#endif
79072805 3435 default:
cea2e8a9 3436 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3437 }
bd61b366 3438 return NULL;
79072805
LW
3439}
3440
3441/* compliments of Tom Christiansen */
3442
3443/* unexec() can be found in the Gnu emacs distribution */
ee580363 3444/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3445
3446void
864dbfa3 3447Perl_my_unexec(pTHX)
79072805 3448{
b37c2d43 3449 PERL_UNUSED_CONTEXT;
79072805 3450#ifdef UNEXEC
b37c2d43
AL
3451 SV * prog = newSVpv(BIN_EXP, 0);
3452 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3453 int status = 1;
79072805
LW
3454 extern int etext;
3455
396482e1 3456 sv_catpvs(prog, "/perl");
396482e1 3457 sv_catpvs(file, ".perldump");
79072805 3458
ee580363
GS
3459 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3460 /* unexec prints msg to stderr in case of failure */
6ad3d225 3461 PerlProc_exit(status);
79072805 3462#else
a5f75d66
AD
3463# ifdef VMS
3464# include <lib$routines.h>
3465 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3466# elif defined(WIN32) || defined(__CYGWIN__)
3467 Perl_croak(aTHX_ "dump is not supported");
aa689395 3468# else
79072805 3469 ABORT(); /* for use with undump */
aa689395 3470# endif
a5f75d66 3471#endif
79072805
LW
3472}
3473
cb68f92d
GS
3474/* initialize curinterp */
3475STATIC void
cea2e8a9 3476S_init_interp(pTHX)
cb68f92d 3477{
97aff369 3478 dVAR;
acfe0abc
GS
3479#ifdef MULTIPLICITY
3480# define PERLVAR(var,type)
3481# define PERLVARA(var,n,type)
3482# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3483# define PERLVARI(var,type,init) aTHX->var = init;
3484# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3485# else
acfe0abc
GS
3486# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3487# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3488# endif
acfe0abc 3489# include "intrpvar.h"
acfe0abc
GS
3490# undef PERLVAR
3491# undef PERLVARA
3492# undef PERLVARI
3493# undef PERLVARIC
3494#else
3495# define PERLVAR(var,type)
3496# define PERLVARA(var,n,type)
3497# define PERLVARI(var,type,init) PL_##var = init;
3498# define PERLVARIC(var,type,init) PL_##var = init;
3499# include