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Fixes to allow win32 Perl to properly handle PERL5LIB.
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
LW		 2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
010d7370
JV		 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW		 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. */
a0d0e21e
LW		 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 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);
016af4f1
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
DM		 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;
7918f24d
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 *
7766f137
GS		 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
GS		 188 return my_perl;
189}
190#else
954c1994
GS		 191
192/*
ccfc67b7
JH		 193=head1 Embedding Functions
194
954c1994
GS		 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 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 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
3280af22
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 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 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 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 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 884 }
885
bf9cdc68
RG		 886 PL_perldb = 0;
887
8ebc5c01 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 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 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 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 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
cbfd0a87
NC		 2385Returns the AV of the specified Perl array. C<flags> are passed to
2386C<gv_fetchpv>. If C<GV_ADD> is set and the
2387Perl variable does not exist then it will be created. If C<flags> is zero
2388and the variable does not exist then NULL is returned.
954c1994
GS		 2389
2390=cut
2391*/
2392
6224f72b 2393AV*
cbfd0a87 2394Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2395{
cbfd0a87 2396 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC		 2397
2398 PERL_ARGS_ASSERT_GET_AV;
2399
cbfd0a87 2400 if (flags)
6224f72b
GS		 2401 return GvAVn(gv);
2402 if (gv)
2403 return GvAV(gv);
7d49f689 2404 return NULL;
6224f72b
GS		 2405}
2406
954c1994 2407/*
ccfc67b7
JH		 2408=head1 Hash Manipulation Functions
2409
954c1994
GS		 2410=for apidoc p||get_hv
2411
6673a63c
NC		 2412Returns the HV of the specified Perl hash. C<flags> are passed to
2413C<gv_fetchpv>. If C<GV_ADD> is set and the
2414Perl variable does not exist then it will be created. If C<flags> is zero
2415and the variable does not exist then NULL is returned.
954c1994
GS		 2416
2417=cut
2418*/
2419
6224f72b 2420HV*
6673a63c 2421Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2422{
6673a63c 2423 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC		 2424
2425 PERL_ARGS_ASSERT_GET_HV;
2426
6673a63c 2427 if (flags)
a0d0e21e
LW		 2428 return GvHVn(gv);
2429 if (gv)
2430 return GvHV(gv);
5c284bb0 2431 return NULL;
a0d0e21e
LW		 2432}
2433
954c1994 2434/*
ccfc67b7
JH		 2435=head1 CV Manipulation Functions
2436
780a5241
NC		 2437=for apidoc p||get_cvn_flags
2438
2439Returns the CV of the specified Perl subroutine. C<flags> are passed to
2440C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2441exist then it will be declared (which has the same effect as saying
2442C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2443then NULL is returned.
2444
954c1994
GS		 2445=for apidoc p||get_cv
2446
780a5241 2447Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS		 2448
2449=cut
2450*/
2451
a0d0e21e 2452CV*
780a5241 2453Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2454{
780a5241 2455 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS		 2456 /* XXX this is probably not what they think they're getting.
2457 * It has the same effect as "sub name;", i.e. just a forward
2458 * declaration! */
7918f24d
NC		 2459
2460 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2461
780a5241 2462 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2463 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2464 return newSUB(start_subparse(FALSE, 0),
780a5241 2465 newSVOP(OP_CONST, 0, sv),
5f66b61c 2466 NULL, NULL);
780a5241 2467 }
a0d0e21e 2468 if (gv)
8ebc5c01 2469 return GvCVu(gv);
601f1833 2470 return NULL;
a0d0e21e
LW		 2471}
2472
2c67934f
NC		 2473/* Nothing in core calls this now, but we can't replace it with a macro and
2474 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC		 2475CV*
2476Perl_get_cv(pTHX_ const char *name, I32 flags)
2477{
7918f24d
NC		 2478 PERL_ARGS_ASSERT_GET_CV;
2479
780a5241
NC		 2480 return get_cvn_flags(name, strlen(name), flags);
2481}
2482
79072805
LW		 2483/* Be sure to refetch the stack pointer after calling these routines. */
2484
954c1994 2485/*
ccfc67b7
JH		 2486
2487=head1 Callback Functions
2488
954c1994
GS		 2489=for apidoc p||call_argv
2490
2491Performs a callback to the specified Perl sub. See L<perlcall>.
2492
2493=cut
2494*/
2495
a0d0e21e 2496I32
8f42b153 2497Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2498
8ac85365
NIS		 2499 /* See G_* flags in cop.h */
2500 /* null terminated arg list */
8990e307 2501{
97aff369 2502 dVAR;
a0d0e21e 2503 dSP;
8990e307 2504
7918f24d
NC		 2505 PERL_ARGS_ASSERT_CALL_ARGV;
2506
924508f0 2507 PUSHMARK(SP);
a0d0e21e 2508 if (argv) {
8990e307 2509 while (*argv) {
6e449a3a 2510 mXPUSHs(newSVpv(*argv,0));
8990e307
LW		 2511 argv++;
2512 }
a0d0e21e 2513 PUTBACK;
8990e307 2514 }
864dbfa3 2515 return call_pv(sub_name, flags);
8990e307
LW		 2516}
2517
954c1994
GS		 2518/*
2519=for apidoc p||call_pv
2520
2521Performs a callback to the specified Perl sub. See L<perlcall>.
2522
2523=cut
2524*/
2525
a0d0e21e 2526I32
864dbfa3 2527Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 2528 /* name of the subroutine */
2529 /* See G_* flags in cop.h */
a0d0e21e 2530{
7918f24d
NC		 2531 PERL_ARGS_ASSERT_CALL_PV;
2532
0da0e728 2533 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW		 2534}
2535
954c1994
GS		 2536/*
2537=for apidoc p||call_method
2538
2539Performs a callback to the specified Perl method. The blessed object must
2540be on the stack. See L<perlcall>.
2541
2542=cut
2543*/
2544
a0d0e21e 2545I32
864dbfa3 2546Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 2547 /* name of the subroutine */
2548 /* See G_* flags in cop.h */
a0d0e21e 2549{
46ca9bac 2550 STRLEN len;
7918f24d
NC		 2551 PERL_ARGS_ASSERT_CALL_METHOD;
2552
46ca9bac
GF		 2553 len = strlen(methname);
2554
2555 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2556 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW		 2557}
2558
2559/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 2560/*
2561=for apidoc p||call_sv
2562
2563Performs a callback to the Perl sub whose name is in the SV. See
2564L<perlcall>.
2565
2566=cut
2567*/
2568
a0d0e21e 2569I32
001d637e 2570Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2571 /* See G_* flags in cop.h */
a0d0e21e 2572{
27da23d5 2573 dVAR; dSP;
a0d0e21e 2574 LOGOP myop; /* fake syntax tree node */
968b3946 2575 UNOP method_op;
aa689395 2576 I32 oldmark;
8ea43dc8 2577 VOL I32 retval = 0;
a0d0e21e 2578 I32 oldscope;
54310121 2579 bool oldcatch = CATCH_GET;
6224f72b 2580 int ret;
c4420975 2581 OP* const oldop = PL_op;
db36c5a1 2582 dJMPENV;
1e422769 2583
7918f24d
NC		 2584 PERL_ARGS_ASSERT_CALL_SV;
2585
a0d0e21e
LW		 2586 if (flags & G_DISCARD) {
2587 ENTER;
2588 SAVETMPS;
2589 }
2f8edad0
NC		 2590 if (!(flags & G_WANT)) {
2591 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2592 */
2593 flags |= G_SCALAR;
2594 }
a0d0e21e 2595
aa689395 2596 Zero(&myop, 1, LOGOP);
5f66b61c 2597 myop.op_next = NULL;
f51d4af5 2598 if (!(flags & G_NOARGS))
aa689395 2599 myop.op_flags |= OPf_STACKED;
4f911530 2600 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2601 SAVEOP();
533c011a 2602 PL_op = (OP*)&myop;
aa689395 2603
3280af22
NIS		 2604 EXTEND(PL_stack_sp, 1);
2605 *++PL_stack_sp = sv;
aa689395 2606 oldmark = TOPMARK;
3280af22 2607 oldscope = PL_scopestack_ix;
a0d0e21e 2608
3280af22 2609 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2610 /* Handle first BEGIN of -d. */
3280af22 2611 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 2612 /* Try harder, since this may have been a sighandler, thus
2613 * curstash may be meaningless. */
ea726b52 2614 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2615 && !(flags & G_NODEBUG))
533c011a 2616 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2617
968b3946
GS		 2618 if (flags & G_METHOD) {
2619 Zero(&method_op, 1, UNOP);
2620 method_op.op_next = PL_op;
2621 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2622 method_op.op_type = OP_METHOD;
968b3946 2623 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2624 myop.op_type = OP_ENTERSUB;
f39d0b86 2625 PL_op = (OP*)&method_op;
968b3946
GS		 2626 }
2627
312caa8e 2628 if (!(flags & G_EVAL)) {
0cdb2077 2629 CATCH_SET(TRUE);
d6f07c05 2630 CALL_BODY_SUB((OP*)&myop);
312caa8e 2631 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2632 CATCH_SET(oldcatch);
312caa8e
CS		 2633 }
2634 else {
d78bda3d 2635 myop.op_other = (OP*)&myop;
3280af22 2636 PL_markstack_ptr--;
edb2152a 2637 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2638 PL_markstack_ptr++;
a0d0e21e 2639
14dd3ad8 2640 JMPENV_PUSH(ret);
edb2152a 2641
6224f72b
GS		 2642 switch (ret) {
2643 case 0:
14dd3ad8 2644 redo_body:
d6f07c05 2645 CALL_BODY_SUB((OP*)&myop);
312caa8e 2646 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2647 if (!(flags & G_KEEPERR)) {
ab69dbc2 2648 CLEAR_ERRSV();
8433848b 2649 }
a0d0e21e 2650 break;
6224f72b 2651 case 1:
f86702cc 2652 STATUS_ALL_FAILURE;
a0d0e21e 2653 /* FALL THROUGH */
6224f72b 2654 case 2:
a0d0e21e 2655 /* my_exit() was called */
3280af22 2656 PL_curstash = PL_defstash;
a0d0e21e 2657 FREETMPS;
14dd3ad8 2658 JMPENV_POP;
f86702cc 2659 my_exit_jump();
a0d0e21e 2660 /* NOTREACHED */
6224f72b 2661 case 3:
3280af22 2662 if (PL_restartop) {
febb3a6d 2663 PL_restartjmpenv = NULL;
533c011a 2664 PL_op = PL_restartop;
3280af22 2665 PL_restartop = 0;
312caa8e 2666 goto redo_body;
a0d0e21e 2667 }
3280af22 2668 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2669 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW		 2670 retval = 0;
2671 else {
2672 retval = 1;
3280af22 2673 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2674 }
312caa8e 2675 break;
a0d0e21e 2676 }
a0d0e21e 2677
edb2152a
NC		 2678 if (PL_scopestack_ix > oldscope)
2679 delete_eval_scope();
14dd3ad8 2680 JMPENV_POP;
a0d0e21e 2681 }
1e422769 2682
a0d0e21e 2683 if (flags & G_DISCARD) {
3280af22 2684 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 2685 retval = 0;
2686 FREETMPS;
2687 LEAVE;
2688 }
533c011a 2689 PL_op = oldop;
a0d0e21e
LW		 2690 return retval;
2691}
2692
6e72f9df 2693/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2694
954c1994
GS		 2695/*
2696=for apidoc p||eval_sv
2697
be064c4a
DM		 2698Tells Perl to C<eval> the string in the SV. It supports the same flags
2699as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS		 2700
2701=cut
2702*/
2703
a0d0e21e 2704I32
864dbfa3 2705Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2706
8ac85365 2707 /* See G_* flags in cop.h */
a0d0e21e 2708{
97aff369 2709 dVAR;
924508f0 2710 dSP;
a0d0e21e 2711 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP		 2712 VOL I32 oldmark = SP - PL_stack_base;
2713 VOL I32 retval = 0;
6224f72b 2714 int ret;
c4420975 2715 OP* const oldop = PL_op;
db36c5a1 2716 dJMPENV;
84902520 2717
7918f24d
NC		 2718 PERL_ARGS_ASSERT_EVAL_SV;
2719
4633a7c4
LW		 2720 if (flags & G_DISCARD) {
2721 ENTER;
2722 SAVETMPS;
2723 }
2724
462e5cf6 2725 SAVEOP();
533c011a
NIS		 2726 PL_op = (OP*)&myop;
2727 Zero(PL_op, 1, UNOP);
3280af22
NIS		 2728 EXTEND(PL_stack_sp, 1);
2729 *++PL_stack_sp = sv;
79072805 2730
4633a7c4
LW		 2731 if (!(flags & G_NOARGS))
2732 myop.op_flags = OPf_STACKED;
5f66b61c 2733 myop.op_next = NULL;
6e72f9df 2734 myop.op_type = OP_ENTEREVAL;
4f911530 2735 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df 2736 if (flags & G_KEEPERR)
2737 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2738
dedbcade
DM		 2739 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2740 * before a PUSHEVAL, which corrupts the stack after a croak */
2741 TAINT_PROPER("eval_sv()");
2742
14dd3ad8 2743 JMPENV_PUSH(ret);
6224f72b
GS		 2744 switch (ret) {
2745 case 0:
14dd3ad8 2746 redo_body:
2ba65d5f
DM		 2747 if (PL_op == (OP*)(&myop)) {
2748 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2749 if (!PL_op)
2750 goto fail; /* failed in compilation */
2751 }
4aca2f62 2752 CALLRUNOPS(aTHX);
312caa8e 2753 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2754 if (!(flags & G_KEEPERR)) {
ab69dbc2 2755 CLEAR_ERRSV();
8433848b 2756 }
4633a7c4 2757 break;
6224f72b 2758 case 1:
f86702cc 2759 STATUS_ALL_FAILURE;
4633a7c4 2760 /* FALL THROUGH */
6224f72b 2761 case 2:
4633a7c4 2762 /* my_exit() was called */
3280af22 2763 PL_curstash = PL_defstash;
4633a7c4 2764 FREETMPS;
14dd3ad8 2765 JMPENV_POP;
f86702cc 2766 my_exit_jump();
4633a7c4 2767 /* NOTREACHED */
6224f72b 2768 case 3:
3280af22 2769 if (PL_restartop) {
febb3a6d 2770 PL_restartjmpenv = NULL;
533c011a 2771 PL_op = PL_restartop;
3280af22 2772 PL_restartop = 0;
312caa8e 2773 goto redo_body;
4633a7c4 2774 }
4aca2f62 2775 fail:
3280af22 2776 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2777 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW		 2778 retval = 0;
2779 else {
2780 retval = 1;
3280af22 2781 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2782 }
312caa8e 2783 break;
4633a7c4
LW		 2784 }
2785
14dd3ad8 2786 JMPENV_POP;
4633a7c4 2787 if (flags & G_DISCARD) {
3280af22 2788 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2789 retval = 0;
2790 FREETMPS;
2791 LEAVE;
2792 }
533c011a 2793 PL_op = oldop;
4633a7c4
LW		 2794 return retval;
2795}
2796
954c1994
GS		 2797/*
2798=for apidoc p||eval_pv
2799
2800Tells Perl to C<eval> the given string and return an SV* result.
2801
2802=cut
2803*/
2804
137443ea 2805SV*
864dbfa3 2806Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2807{
97aff369 2808 dVAR;
137443ea 2809 dSP;
2810 SV* sv = newSVpv(p, 0);
2811
7918f24d
NC		 2812 PERL_ARGS_ASSERT_EVAL_PV;
2813
864dbfa3 2814 eval_sv(sv, G_SCALAR);
137443ea 2815 SvREFCNT_dec(sv);
2816
2817 SPAGAIN;
2818 sv = POPs;
2819 PUTBACK;
2820
2d8e6c8d 2821 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2822 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2823 }
137443ea 2824
2825 return sv;
2826}
2827
4633a7c4
LW		 2828/* Require a module. */
2829
954c1994 2830/*
ccfc67b7
JH		 2831=head1 Embedding Functions
2832
954c1994
GS		 2833=for apidoc p||require_pv
2834
7d3fb230
BS		 2835Tells Perl to C<require> the file named by the string argument. It is
2836analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2837implemented that way; consider using load_module instead.
954c1994 2838
7d3fb230 2839=cut */
954c1994 2840
4633a7c4 2841void
864dbfa3 2842Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2843{
97aff369 2844 dVAR;
d3acc0f7 2845 dSP;
97aff369 2846 SV* sv;
7918f24d
NC		 2847
2848 PERL_ARGS_ASSERT_REQUIRE_PV;
2849
e788e7d3 2850 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2851 PUTBACK;
be41e5d9
NC		 2852 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2853 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP		 2854 SPAGAIN;
2855 POPSTACK;
79072805
LW		 2856}
2857
76e3520e 2858STATIC void
e1ec3a88 2859S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2860{
ab821d7f 2861 /* This message really ought to be max 23 lines.
75c72d73 2862 * Removed -h because the user already knows that option. Others? */
fb73857a 2863
1566c39d
NC		 2864 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2865 minimum of 509 character string literals. */
27da23d5 2866 static const char * const usage_msg[] = {
1566c39d
NC		 2867" -0[octal] specify record separator (\\0, if no argument)\n"
2868" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2869" -C[number/list] enables the listed Unicode features\n"
2870" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2871" -d[:debugger] run program under debugger\n"
2872" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2873" -e program one line of program (several -e's allowed, omit programfile)\n"
2874" -E program like -e, but enables all optional features\n"
2875" -f don't do $sitelib/sitecustomize.pl at startup\n"
2876" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2877" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2878" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2879" -l[octal] enable line ending processing, specifies line terminator\n"
2880" -[mM][-]module execute \"use/no module...\" before executing program\n"
2881" -n assume \"while (<>) { ... }\" loop around program\n"
2882" -p assume loop like -n but print line also, like sed\n"
2883" -s enable rudimentary parsing for switches after programfile\n"
2884" -S look for programfile using PATH environment variable\n",
2885" -t enable tainting warnings\n"
2886" -T enable tainting checks\n"
2887" -u dump core after parsing program\n"
2888" -U allow unsafe operations\n"
2889" -v print version, patchlevel and license\n"
2890" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2891" -w enable many useful warnings\n"
1566c39d
NC		 2892" -W enable all warnings\n"
2893" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2894" -X disable all warnings\n"
2895" \n"
2896"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a 2897NULL
2898};
27da23d5 2899 const char * const *p = usage_msg;
1566c39d 2900 PerlIO *out = PerlIO_stdout();
fb73857a 2901
7918f24d
NC		 2902 PERL_ARGS_ASSERT_USAGE;
2903
1566c39d
NC		 2904 PerlIO_printf(out,
2905 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2906 name);
fb73857a 2907 while (*p)
1566c39d 2908 PerlIO_puts(out, *p++);
4633a7c4
LW		 2909}
2910
b4ab917c
DM		 2911/* convert a string of -D options (or digits) into an int.
2912 * sets *s to point to the char after the options */
2913
2914#ifdef DEBUGGING
2915int
e1ec3a88 2916Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2917{
27da23d5 2918 static const char * const usage_msgd[] = {
651b8f1a
NC		 2919 " Debugging flag values: (see also -d)\n"
2920 " p Tokenizing and parsing (with v, displays parse stack)\n"
2921 " s Stack snapshots (with v, displays all stacks)\n"
2922 " l Context (loop) stack processing\n"
2923 " t Trace execution\n"
2924 " o Method and overloading resolution\n",
2925 " c String/numeric conversions\n"
2926 " P Print profiling info, source file input state\n"
2927 " m Memory and SV allocation\n"
2928 " f Format processing\n"
2929 " r Regular expression parsing and execution\n"
2930 " x Syntax tree dump\n",
2931 " u Tainting checks\n"
2932 " H Hash dump -- usurps values()\n"
2933 " X Scratchpad allocation\n"
2934 " D Cleaning up\n"
2935 " T Tokenising\n"
2936 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2937 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2938 " v Verbose: use in conjunction with other flags\n"
2939 " C Copy On Write\n"
2940 " A Consistency checks on internal structures\n"
2941 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2942 " M trace smart match resolution\n"
2943 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC		 2944 NULL
2945 };
b4ab917c 2946 int i = 0;
7918f24d
NC		 2947
2948 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2949
b4ab917c
DM		 2950 if (isALPHA(**s)) {
2951 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2952 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM		 2953
2954 for (; isALNUM(**s); (*s)++) {
c4420975 2955 const char * const d = strchr(debopts,**s);
b4ab917c
DM		 2956 if (d)
2957 i |= 1 << (d - debopts);
2958 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC		 2959 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2960 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM		 2961 }
2962 }
e6e64d9b 2963 else if (isDIGIT(**s)) {
b4ab917c
DM		 2964 i = atoi(*s);
2965 for (; isALNUM(**s); (*s)++) ;
2966 }
ddcf8bc1 2967 else if (givehelp) {
06e869a4 2968 const char *const *p = usage_msgd;
651b8f1a 2969 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 2970 }
b4ab917c
DM		 2971# ifdef EBCDIC
2972 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2973 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2974 "-Dp not implemented on this platform\n");
2975# endif
2976 return i;
2977}
2978#endif
2979
79072805
LW		 2980/* This routine handles any switches that can be given during run */
2981
c7030b81
NC		 2982const char *
2983Perl_moreswitches(pTHX_ const char *s)
79072805 2984{
27da23d5 2985 dVAR;
84c133a0 2986 UV rschar;
0544e6df 2987 const char option = *s; /* used to remember option in -m/-M code */
79072805 2988
7918f24d
NC		 2989 PERL_ARGS_ASSERT_MORESWITCHES;
2990
79072805
LW		 2991 switch (*s) {
2992 case '0':
a863c7d1 2993 {
f2095865 2994 I32 flags = 0;
a3b680e6 2995 STRLEN numlen;
f2095865
JH		 2996
2997 SvREFCNT_dec(PL_rs);
2998 if (s[1] == 'x' && s[2]) {
a3b680e6 2999 const char *e = s+=2;
f2095865
JH		 3000 U8 *tmps;
3001
a3b680e6
AL		 3002 while (*e)
3003 e++;
f2095865
JH		 3004 numlen = e - s;
3005 flags = PERL_SCAN_SILENT_ILLDIGIT;
3006 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3007 if (s + numlen < e) {
3008 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3009 numlen = 0;
3010 s--;
3011 }
396482e1 3012 PL_rs = newSVpvs("");
c5661c80 3013 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH		 3014 tmps = (U8*)SvPVX(PL_rs);
3015 uvchr_to_utf8(tmps, rschar);
3016 SvCUR_set(PL_rs, UNISKIP(rschar));
3017 SvUTF8_on(PL_rs);
3018 }
3019 else {
3020 numlen = 4;
3021 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3022 if (rschar & ~((U8)~0))
3023 PL_rs = &PL_sv_undef;
3024 else if (!rschar && numlen >= 2)
396482e1 3025 PL_rs = newSVpvs("");
f2095865
JH		 3026 else {
3027 char ch = (char)rschar;
3028 PL_rs = newSVpvn(&ch, 1);
3029 }
3030 }
64ace3f8 3031 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3032 return s + numlen;
a863c7d1 3033 }
46487f74 3034 case 'C':
a05d7ebb 3035 s++;
dd374669 3036 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC		 3037 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3038 PL_utf8cache = -1;
46487f74 3039 return s;
2304df62 3040 case 'F':
3280af22 3041 PL_minus_F = TRUE;
ebce5377
RGS		 3042 PL_splitstr = ++s;
3043 while (*s && !isSPACE(*s)) ++s;
e49e380e 3044 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3045 return s;
79072805 3046 case 'a':
3280af22 3047 PL_minus_a = TRUE;
79072805
LW		 3048 s++;
3049 return s;
3050 case 'c':
3280af22 3051 PL_minus_c = TRUE;
79072805
LW		 3052 s++;
3053 return s;
3054 case 'd':
f20b2998 3055 forbid_setid('d', FALSE);
4633a7c4 3056 s++;
2cbb2ee1
RGS		 3057
3058 /* -dt indicates to the debugger that threads will be used */
3059 if (*s == 't' && !isALNUM(s[1])) {
3060 ++s;
3061 my_setenv("PERL5DB_THREADED", "1");
3062 }
3063
70c94a19
RR		 3064 /* The following permits -d:Mod to accepts arguments following an =
3065 in the fashion that -MSome::Mod does. */
3066 if (*s == ':' || *s == '=') {
b19934fb
NC		 3067 const char *start;
3068 const char *end;
3069 SV *sv;
3070
3071 if (*++s == '-') {
3072 ++s;
3073 sv = newSVpvs("no Devel::");
3074 } else {
3075 sv = newSVpvs("use Devel::");
3076 }
3077
3078 start = s;
3079 end = s + strlen(s);
f85893a1 3080
b19934fb 3081 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR		 3082 while(isALNUM(*s) || *s==':') ++s;
3083 if (*s != '=')
f85893a1 3084 sv_catpvn(sv, start, end - start);
70c94a19
RR		 3085 else {
3086 sv_catpvn(sv, start, s-start);
95a2b409
RGS		 3087 /* Don't use NUL as q// delimiter here, this string goes in the
3088 * environment. */
3089 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3090 }
f85893a1 3091 s = end;
184f32ec 3092 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3093 SvREFCNT_dec(sv);
4633a7c4 3094 }
ed094faf 3095 if (!PL_perldb) {
3280af22 3096 PL_perldb = PERLDB_ALL;
a0d0e21e 3097 init_debugger();
ed094faf 3098 }
79072805
LW		 3099 return s;
3100 case 'D':
0453d815 3101 {
79072805 3102#ifdef DEBUGGING
f20b2998 3103 forbid_setid('D', FALSE);
b4ab917c 3104 s++;
dd374669 3105 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3106#else /* !DEBUGGING */
0453d815 3107 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3108 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3109 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3110 for (s++; isALNUM(*s); s++) ;
79072805 3111#endif
79072805 3112 return s;
0453d815 3113 }
4633a7c4 3114 case 'h':
ac27b0f5 3115 usage(PL_origargv[0]);
7ca617d0 3116 my_exit(0);
79072805 3117 case 'i':
43c5f42d 3118 Safefree(PL_inplace);
c030f24b
GH		 3119#if defined(__CYGWIN__) /* do backup extension automagically */
3120 if (*(s+1) == '\0') {
c86a4f2e 3121 PL_inplace = savepvs(".bak");
c030f24b
GH		 3122 return s+1;
3123 }
3124#endif /* __CYGWIN__ */
5ef5d758 3125 {
d4c19fe8 3126 const char * const start = ++s;
5ef5d758
NC		 3127 while (*s && !isSPACE(*s))
3128 ++s;
3129
3130 PL_inplace = savepvn(start, s - start);
3131 }
7b8d334a 3132 if (*s) {
5ef5d758 3133 ++s;
7b8d334a 3134 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3135 s++;
7b8d334a 3136 }
fb73857a 3137 return s;
4e49a025 3138 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3139 forbid_setid('I', FALSE);
fb73857a 3140 ++s;
3141 while (*s && isSPACE(*s))
3142 ++s;
3143 if (*s) {
c7030b81 3144 const char *e, *p;
0df16ed7
GS		 3145 p = s;
3146 /* ignore trailing spaces (possibly followed by other switches) */
3147 do {
3148 for (e = p; *e && !isSPACE(*e); e++) ;
3149 p = e;
3150 while (isSPACE(*p))
3151 p++;
3152 } while (*p && *p != '-');
55b4bc1c 3153 incpush(s, e-s,
e28f3139 3154 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS		 3155 s = p;
3156 if (*s == '-')
3157 s++;
79072805
LW		 3158 }
3159 else
a67e862a 3160 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3161 return s;
79072805 3162 case 'l':
3280af22 3163 PL_minus_l = TRUE;
79072805 3164 s++;
7889fe52
NIS		 3165 if (PL_ors_sv) {
3166 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3167 PL_ors_sv = NULL;
7889fe52 3168 }
79072805 3169 if (isDIGIT(*s)) {
53305cf1 3170 I32 flags = 0;
a3b680e6 3171 STRLEN numlen;
396482e1 3172 PL_ors_sv = newSVpvs("\n");
53305cf1
NC		 3173 numlen = 3 + (*s == '0');
3174 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 3175 s += numlen;
3176 }
3177 else {
8bfdd7d9 3178 if (RsPARA(PL_rs)) {
396482e1 3179 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS		 3180 }
3181 else {
8bfdd7d9 3182 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3183 }
79072805
LW		 3184 }
3185 return s;
1a30305b 3186 case 'M':
f20b2998 3187 forbid_setid('M', FALSE); /* XXX ? */
1a30305b 3188 /* FALL THROUGH */
3189 case 'm':
f20b2998 3190 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3191 if (*++s) {
c7030b81 3192 const char *start;
b64cb68c 3193 const char *end;
11343788 3194 SV *sv;
e1ec3a88 3195 const char *use = "use ";
0544e6df 3196 bool colon = FALSE;
a5f75d66 3197 /* -M-foo == 'no foo' */
d0043bd1
NC		 3198 /* Leading space on " no " is deliberate, to make both
3199 possibilities the same length. */
3200 if (*s == '-') { use = " no "; ++s; }
3201 sv = newSVpvn(use,4);
a5f75d66 3202 start = s;
1a30305b 3203 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB		 3204 while(isALNUM(*s) || *s==':') {
3205 if( *s++ == ':' ) {
3206 if( *s == ':' )
3207 s++;
3208 else
3209 colon = TRUE;
3210 }
3211 }
3212 if (s == start)
3213 Perl_croak(aTHX_ "Module name required with -%c option",
3214 option);
3215 if (colon)
3216 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3217 "contains single ':'",
63da6837 3218 (int)(s - start), start, option);
b64cb68c 3219 end = s + strlen(s);
c07a80fd 3220 if (*s != '=') {
b64cb68c 3221 sv_catpvn(sv, start, end - start);
0544e6df 3222 if (option == 'm') {
c07a80fd 3223 if (*s != '\0')
cea2e8a9 3224 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3225 sv_catpvs( sv, " ()");
c07a80fd 3226 }
3227 } else {
11343788 3228 sv_catpvn(sv, start, s-start);
b64cb68c
NC		 3229 /* Use NUL as q''-delimiter. */
3230 sv_catpvs(sv, " split(/,/,q\0");
3231 ++s;
3232 sv_catpvn(sv, s, end - s);
396482e1 3233 sv_catpvs(sv, "\0)");
c07a80fd 3234 }
b64cb68c 3235 s = end;
29a861e7 3236 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b 3237 }
3238 else
0544e6df 3239 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3240 return s;
79072805 3241 case 'n':
3280af22 3242 PL_minus_n = TRUE;
79072805
LW		 3243 s++;
3244 return s;
3245 case 'p':
3280af22 3246 PL_minus_p = TRUE;
79072805
LW		 3247 s++;
3248 return s;
3249 case 's':
f20b2998 3250 forbid_setid('s', FALSE);
3280af22 3251 PL_doswitches = TRUE;
79072805
LW		 3252 s++;
3253 return s;
6537fe72
MS		 3254 case 't':
3255 if (!PL_tainting)
22f7c9c9 3256 TOO_LATE_FOR('t');
6537fe72
MS		 3257 s++;
3258 return s;
463ee0b2 3259 case 'T':
3280af22 3260 if (!PL_tainting)
22f7c9c9 3261 TOO_LATE_FOR('T');
463ee0b2
LW		 3262 s++;
3263 return s;
79072805 3264 case 'u':
3280af22 3265 PL_do_undump = TRUE;
79072805
LW		 3266 s++;
3267 return s;
3268 case 'U':
3280af22 3269 PL_unsafe = TRUE;
79072805
LW		 3270 s++;
3271 return s;
3272 case 'v':
d7aa5382 3273 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3274 upg_version(PL_patchlevel, TRUE);
8e9464f1 3275#if !defined(DGUX)
46807d8e
YO		 3276 {
3277 SV* level= vstringify(PL_patchlevel);
3278#ifdef PERL_PATCHNUM
23d483e2
NC		 3279# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3280 SV *num = newSVpvs(PERL_PATCHNUM "*");
3281# else
3282 SV *num = newSVpvs(PERL_PATCHNUM);
3283# endif
46807d8e
YO		 3284
3285 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3286 SvREFCNT_dec(level);
3287 level= num;
3288 } else {
d0a9311f 3289 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO		 3290 SvREFCNT_dec(num);
3291 }
3292 #endif
3293 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG		 3294 "\nThis is perl " STRINGIFY(PERL_REVISION)
3295 ", version " STRINGIFY(PERL_VERSION)
3296 ", subversion " STRINGIFY(PERL_SUBVERSION)
3297 " (%"SVf") built for " ARCHNAME, level
3298 );
46807d8e
YO		 3299 SvREFCNT_dec(level);
3300 }
8e9464f1
JH		 3301#else /* DGUX */
3302/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3303 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3304 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3305 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH		 3306 PerlIO_printf(PerlIO_stdout(),
3307 Perl_form(aTHX_ " built under %s at %s %s\n",
3308 OSNAME, __DATE__, __TIME__));
3309 PerlIO_printf(PerlIO_stdout(),
3310 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3311 OSVERS));
8e9464f1 3312#endif /* !DGUX */
fb73857a 3313#if defined(LOCAL_PATCH_COUNT)
3314 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 3315 PerlIO_printf(PerlIO_stdout(),
3316 "\n(with %d registered patch%s, "
3317 "see perl -V for more detail)",
bb7a0f54 3318 LOCAL_PATCH_COUNT,
b0e47665 3319 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3320#endif
1a30305b 3321
b0e47665 3322 PerlIO_printf(PerlIO_stdout(),
010d7370 3323 "\n\nCopyright 1987-2011, Larry Wall\n");
79072805 3324#ifdef MSDOS
b0e47665
GS		 3325 PerlIO_printf(PerlIO_stdout(),
3326 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 3327#endif
3328#ifdef DJGPP
b0e47665
GS		 3329 PerlIO_printf(PerlIO_stdout(),
3330 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3331 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3332#endif
79072805 3333#ifdef OS2
b0e47665
GS		 3334 PerlIO_printf(PerlIO_stdout(),
3335 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3336 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3337#endif
79072805 3338#ifdef atarist
b0e47665
GS		 3339 PerlIO_printf(PerlIO_stdout(),
3340 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3341#endif
a3f9223b 3342#ifdef __BEOS__
b0e47665
GS		 3343 PerlIO_printf(PerlIO_stdout(),
3344 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3345#endif
1d84e8df 3346#ifdef MPE
b0e47665 3347 PerlIO_printf(PerlIO_stdout(),
e583a879 3348 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3349#endif
9d116dd7 3350#ifdef OEMVS
b0e47665
GS		 3351 PerlIO_printf(PerlIO_stdout(),
3352 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3353#endif
495c5fdc 3354#ifdef __VOS__
b0e47665 3355 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3356 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3357#endif
092bebab 3358#ifdef __OPEN_VM
b0e47665
GS		 3359 PerlIO_printf(PerlIO_stdout(),
3360 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3361#endif
a1a0e61e 3362#ifdef POSIX_BC
b0e47665
GS		 3363 PerlIO_printf(PerlIO_stdout(),
3364 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3365#endif
f83d2536 3366#ifdef EPOC
b0e47665 3367 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3368 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3369#endif
e1caacb4 3370#ifdef UNDER_CE
b475b3e6
JH		 3371 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3372 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH		 3373 wce_hitreturn();
3374#endif
a0fd4948 3375#ifdef __SYMBIAN32__
27da23d5
JH		 3376 PerlIO_printf(PerlIO_stdout(),
3377 "Symbian port by Nokia, 2004-2005\n");
3378#endif
baed7233
DL		 3379#ifdef BINARY_BUILD_NOTICE
3380 BINARY_BUILD_NOTICE;
3381#endif
b0e47665
GS		 3382 PerlIO_printf(PerlIO_stdout(),
3383 "\n\
79072805 3384Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3385GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3386Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3387this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3388Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3389 my_exit(0);
79072805 3390 case 'w':
b2e5e6ba 3391 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3392 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3393 }
599cee73
PM		 3394 s++;
3395 return s;
3396 case 'W':
ac27b0f5 3397 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3398 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3399 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3400 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 3401 s++;
3402 return s;
3403 case 'X':
ac27b0f5 3404 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3405 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3406 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3407 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 3408 s++;
3409 return s;
a0d0e21e 3410 case '*':
79072805 3411 case ' ':
d3133c89
NC		 3412 while( *s == ' ' )
3413 ++s;
3414 if (s[0] == '-') /* Additional switches on #! line. */
3415 return s+1;
79072805 3416 break;
a0d0e21e 3417 case '-':
79072805 3418 case 0:
51882d45 3419#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 3420 case '\r':
3421#endif
79072805
LW		 3422 case '\n':
3423 case '\t':
3424 break;
aa689395 3425#ifdef ALTERNATE_SHEBANG
3426 case 'S': /* OS/2 needs -S on "extproc" line. */
3427 break;
3428#endif
79072805 3429 default:
cea2e8a9 3430 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3431 }
bd61b366 3432 return NULL;
79072805
LW		 3433}
3434
3435/* compliments of Tom Christiansen */
3436
3437/* unexec() can be found in the Gnu emacs distribution */
ee580363 3438/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 3439
3440void
864dbfa3 3441Perl_my_unexec(pTHX)
79072805 3442{
b37c2d43 3443 PERL_UNUSED_CONTEXT;
79072805 3444#ifdef UNEXEC
b37c2d43
AL		 3445 SV * prog = newSVpv(BIN_EXP, 0);
3446 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3447 int status = 1;
79072805
LW		 3448 extern int etext;
3449
396482e1 3450 sv_catpvs(prog, "/perl");
396482e1 3451 sv_catpvs(file, ".perldump");
79072805 3452
ee580363
GS		 3453 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3454 /* unexec prints msg to stderr in case of failure */
6ad3d225 3455 PerlProc_exit(status);
79072805 3456#else
a5f75d66
AD		 3457# ifdef VMS
3458# include <lib$routines.h>
3459 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO		 3460# elif defined(WIN32) || defined(__CYGWIN__)
3461 Perl_croak(aTHX_ "dump is not supported");
aa689395 3462# else
79072805 3463 ABORT(); /* for use with undump */
aa689395 3464# endif
a5f75d66 3465#endif
79072805
LW		 3466}
3467
cb68f92d
GS		 3468/* initialize curinterp */
3469STATIC void
cea2e8a9 3470S_init_interp(pTHX)
cb68f92d 3471{
97aff369 3472 dVAR;
acfe0abc
GS		 3473#ifdef MULTIPLICITY
3474# define PERLVAR(var,type)
3475# define PERLVARA(var,n,type)
3476# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC		 3477# define PERLVARI(var,type,init) aTHX->var = init;
3478# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3479# else
acfe0abc
GS		 3480# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3481# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3482# endif
acfe0abc 3483# include "intrpvar.h"
acfe0abc
GS		 3484# undef PERLVAR
3485# undef PERLVARA
3486# undef PERLVARI
3487# undef PERLVARIC
3488#else
3489# define PERLVAR(var,type)
3490# define PERLVARA(var,n,type)
3491# define PERLVARI(var,type,init) PL_##var = init;
3492# define PERLVARIC(var,type,init) PL_##var = init;
3493# include "intrpvar.h"
acfe0abc
GS		 3494# undef PERLVAR
3495# undef PERLVARA
3496# undef PERLVARI
3497# undef PERLVARIC
cb68f92d
GS		 3498#endif
3499
46ab3289
NC		 3500 /* As these are inside a structure, PERLVARI isn't capable of initialising
3501 them */
6c3f0a89
NC		 3502 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3503 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS