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In S_set_caret_X(), use GvSV() consistently in all conditional code.
[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
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC		 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) {
e4787c0c 1163 if (SvTYPE(sv) != (svtype)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 1431 if (tmpgv) {
0f1723e1 1432 SV *const caret_x = GvSV(tmpgv);
b7975bdd 1433#ifdef HAS_PROCSELFEXE
0f1723e1 1434 S_procself_val(aTHX_ caret_x, PL_origargv[0]);
b7975bdd
NC		 1435#else
1436#ifdef OS2
0f1723e1 1437 sv_setpv(caret_x, os2_execname(aTHX));
b7975bdd 1438#else
0f1723e1 1439 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd
NC		 1440#endif
1441#endif
1442 }
1443}
1444
954c1994
GS		 1445/*
1446=for apidoc perl_parse
1447
1448Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1449
1450=cut
1451*/
1452
79072805 1453int
0cb96387 1454perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1455{
27da23d5 1456 dVAR;
6224f72b 1457 I32 oldscope;
6224f72b 1458 int ret;
db36c5a1 1459 dJMPENV;
8d063cd8 1460
7918f24d
NC		 1461 PERL_ARGS_ASSERT_PERL_PARSE;
1462#ifndef MULTIPLICITY
ed6c66dd 1463 PERL_UNUSED_ARG(my_perl);
7918f24d 1464#endif
9d4ba2ae 1465
b0891165
JH		 1466#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1467 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1468 * This MUST be done before any hash stores or fetches take place.
486ec47a 1469 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1470 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1471 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC		 1472 if (!PL_rehash_seed_set)
1473 PL_rehash_seed = get_hash_seed();
b0891165 1474 {
9d4ba2ae 1475 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1476
1b6737cc
AL		 1477 if (s && (atoi(s) == 1))
1478 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH		 1479 }
1480#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1481
3280af22 1482 PL_origargc = argc;
e2975953 1483 PL_origargv = argv;
a0d0e21e 1484
a2722ac9
GA		 1485 if (PL_origalen != 0) {
1486 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1487 }
1488 else {
3cb9023d
JH		 1489 /* Set PL_origalen be the sum of the contiguous argv[]
1490 * elements plus the size of the env in case that it is
e9137a8e 1491 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH		 1492 * as the maximum modifiable length of $0. In the worst case
1493 * the area we are able to modify is limited to the size of
43c32782 1494 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1495 * --jhi */
e1ec3a88 1496 const char *s = NULL;
54bfe034 1497 int i;
1b6737cc 1498 const UV mask =
7d8e7db3 1499 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1500 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1501 const UV aligned =
43c32782
JH		 1502 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1503
1504 /* See if all the arguments are contiguous in memory. Note
1505 * that 'contiguous' is a loose term because some platforms
1506 * align the argv[] and the envp[]. If the arguments look
1507 * like non-aligned, assume that they are 'strictly' or
1508 * 'traditionally' contiguous. If the arguments look like
1509 * aligned, we just check that they are within aligned
1510 * PTRSIZE bytes. As long as no system has something bizarre
1511 * like the argv[] interleaved with some other data, we are
1512 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH		 1513 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1514 while (*s) s++;
1515 for (i = 1; i < PL_origargc; i++) {
1516 if ((PL_origargv[i] == s + 1
43c32782 1517#ifdef OS2
c8941eeb 1518 || PL_origargv[i] == s + 2
43c32782 1519#endif
c8941eeb
JH		 1520 )
1521 ||
1522 (aligned &&
1523 (PL_origargv[i] > s &&
1524 PL_origargv[i] <=
1525 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1526 )
1527 {
1528 s = PL_origargv[i];
1529 while (*s) s++;
1530 }
1531 else
1532 break;
54bfe034 1533 }
54bfe034 1534 }
a4a109c2
JD		 1535
1536#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1537 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1538 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1539 if ((PL_origenviron[0] == s + 1)
43c32782
JH		 1540 ||
1541 (aligned &&
1542 (PL_origenviron[0] > s &&
1543 PL_origenviron[0] <=
1544 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1545 )
1546 {
9d419b5f 1547#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH		 1548 s = PL_origenviron[0];
1549 while (*s) s++;
1550#endif
bd61b366 1551 my_setenv("NoNe SuCh", NULL);
43c32782
JH		 1552 /* Force copy of environment. */
1553 for (i = 1; PL_origenviron[i]; i++) {
1554 if (PL_origenviron[i] == s + 1
1555 ||
1556 (aligned &&
1557 (PL_origenviron[i] > s &&
1558 PL_origenviron[i] <=
1559 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1560 )
1561 {
1562 s = PL_origenviron[i];
1563 while (*s) s++;
1564 }
1565 else
1566 break;
54bfe034 1567 }
43c32782 1568 }
54bfe034 1569 }
a4a109c2
JD		 1570#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1571
2d2af554 1572 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH		 1573 }
1574
3280af22 1575 if (PL_do_undump) {
a0d0e21e
LW		 1576
1577 /* Come here if running an undumped a.out. */
1578
3280af22
NIS		 1579 PL_origfilename = savepv(argv[0]);
1580 PL_do_undump = FALSE;
a0d0e21e 1581 cxstack_ix = -1; /* start label stack again */
748a9306 1582 init_ids();
b7975bdd
NC		 1583 assert (!PL_tainted);
1584 TAINT;
1585 S_set_caret_X(aTHX);
1586 TAINT_NOT;
a0d0e21e
LW		 1587 init_postdump_symbols(argc,argv,env);
1588 return 0;
1589 }
1590
3280af22 1591 if (PL_main_root) {
3280af22 1592 op_free(PL_main_root);
5f66b61c 1593 PL_main_root = NULL;
ff0cee69 1594 }
5f66b61c 1595 PL_main_start = NULL;
3280af22 1596 SvREFCNT_dec(PL_main_cv);
601f1833 1597 PL_main_cv = NULL;
79072805 1598
3280af22
NIS		 1599 time(&PL_basetime);
1600 oldscope = PL_scopestack_ix;
599cee73 1601 PL_dowarn = G_WARN_OFF;
f86702cc 1602
14dd3ad8 1603 JMPENV_PUSH(ret);
6224f72b 1604 switch (ret) {
312caa8e 1605 case 0:
14dd3ad8 1606 parse_body(env,xsinit);
9ebf26ad 1607 if (PL_unitcheckav) {
3c10abe3 1608 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR		 1609 }
1610 if (PL_checkav) {
ca7b837b 1611 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1612 call_list(oldscope, PL_checkav);
9ebf26ad 1613 }
14dd3ad8
GS		 1614 ret = 0;
1615 break;
6224f72b
GS		 1616 case 1:
1617 STATUS_ALL_FAILURE;
1618 /* FALL THROUGH */
1619 case 2:
1620 /* my_exit() was called */
3280af22 1621 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1622 LEAVE;
1623 FREETMPS;
3280af22 1624 PL_curstash = PL_defstash;
9ebf26ad 1625 if (PL_unitcheckav) {
3c10abe3 1626 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR		 1627 }
1628 if (PL_checkav) {
ca7b837b 1629 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1630 call_list(oldscope, PL_checkav);
9ebf26ad 1631 }
37038d91 1632 ret = STATUS_EXIT;
14dd3ad8 1633 break;
6224f72b 1634 case 3:
bf49b057 1635 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1636 ret = 1;
1637 break;
6224f72b 1638 }
14dd3ad8
GS		 1639 JMPENV_POP;
1640 return ret;
1641}
1642
4a5df386
NC		 1643/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1644 miniperl, and we need to see those flags reflected in the values here. */
1645
1646/* What this returns is subject to change. Use the public interface in Config.
1647 */
1648static void
1649S_Internals_V(pTHX_ CV *cv)
1650{
1651 dXSARGS;
1652#ifdef LOCAL_PATCH_COUNT
1653 const int local_patch_count = LOCAL_PATCH_COUNT;
1654#else
1655 const int local_patch_count = 0;
1656#endif
2dc296d2 1657 const int entries = 3 + local_patch_count;
4a5df386
NC		 1658 int i;
1659 static char non_bincompat_options[] =
1660# ifdef DEBUGGING
1661 " DEBUGGING"
1662# endif
17552284
NC		 1663# ifdef HOMEGROWN_POSIX_SIGNALS
1664 " HOMEGROWN_POSIX_SIGNALS"
1665# endif
4a5df386 1666# ifdef NO_MATHOMS
0d311fbe 1667 " NO_MATHOMS"
4a5df386
NC		 1668# endif
1669# ifdef PERL_DISABLE_PMC
1670 " PERL_DISABLE_PMC"
1671# endif
1672# ifdef PERL_DONT_CREATE_GVSV
1673 " PERL_DONT_CREATE_GVSV"
1674# endif
9a044a43
NC		 1675# ifdef PERL_EXTERNAL_GLOB
1676 " PERL_EXTERNAL_GLOB"
1677# endif
4a5df386
NC		 1678# ifdef PERL_IS_MINIPERL
1679 " PERL_IS_MINIPERL"
1680# endif
1681# ifdef PERL_MALLOC_WRAP
1682 " PERL_MALLOC_WRAP"
1683# endif
1684# ifdef PERL_MEM_LOG
1685 " PERL_MEM_LOG"
1686# endif
1687# ifdef PERL_MEM_LOG_NOIMPL
1688 " PERL_MEM_LOG_NOIMPL"
1689# endif
c3cf41ec
NC		 1690# ifdef PERL_PRESERVE_IVUV
1691 " PERL_PRESERVE_IVUV"
1692# endif
4a5df386
NC		 1693# ifdef PERL_USE_DEVEL
1694 " PERL_USE_DEVEL"
1695# endif
1696# ifdef PERL_USE_SAFE_PUTENV
1697 " PERL_USE_SAFE_PUTENV"
1698# endif
a3749cf3
NC		 1699# ifdef UNLINK_ALL_VERSIONS
1700 " UNLINK_ALL_VERSIONS"
1701# endif
de618ee4
NC		 1702# ifdef USE_ATTRIBUTES_FOR_PERLIO
1703 " USE_ATTRIBUTES_FOR_PERLIO"
1704# endif
4a5df386
NC		 1705# ifdef USE_FAST_STDIO
1706 " USE_FAST_STDIO"
1707# endif
98548bdf
NC		 1708# ifdef USE_LOCALE
1709 " USE_LOCALE"
1710# endif
98548bdf
NC		 1711# ifdef USE_LOCALE_CTYPE
1712 " USE_LOCALE_CTYPE"
1713# endif
5a8d8935
NC		 1714# ifdef USE_PERL_ATOF
1715 " USE_PERL_ATOF"
1716# endif
0d311fbe
NC		 1717# ifdef USE_SITECUSTOMIZE
1718 " USE_SITECUSTOMIZE"
1719# endif
4a5df386
NC		 1720 ;
1721 PERL_UNUSED_ARG(cv);
1722 PERL_UNUSED_ARG(items);
1723
1724 EXTEND(SP, entries);
1725
1726 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1727 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1728 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1729
1730#ifdef __DATE__
1731# ifdef __TIME__
1732 PUSHs(Perl_newSVpvn_flags(aTHX_
1733 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1734 SVs_TEMP));
1735# else
1736 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1737 SVs_TEMP));
1738# endif
1739#else
1740 PUSHs(&PL_sv_undef);
1741#endif
1742
4a5df386
NC		 1743 for (i = 1; i <= local_patch_count; i++) {
1744 /* This will be an undef, if PL_localpatches[i] is NULL. */
1745 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1746 }
1747
1748 XSRETURN(entries);
1749}
1750
be71fc8f
NC		 1751#define INCPUSH_UNSHIFT 0x01
1752#define INCPUSH_ADD_OLD_VERS 0x02
1753#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1754#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1755#define INCPUSH_NOT_BASEDIR 0x10
1756#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC		 1757#define INCPUSH_ADD_SUB_DIRS \
1758 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1759
312caa8e 1760STATIC void *
14dd3ad8 1761S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1762{
27da23d5 1763 dVAR;
2f9285f8 1764 PerlIO *rsfp;
312caa8e 1765 int argc = PL_origargc;
8f42b153 1766 char **argv = PL_origargv;
e1ec3a88 1767 const char *scriptname = NULL;
312caa8e 1768 VOL bool dosearch = FALSE;
c7030b81 1769 register char c;
737c24fc 1770 bool doextract = FALSE;
bd61b366 1771 const char *cddir = NULL;
ab019eaa 1772#ifdef USE_SITECUSTOMIZE
20ef40cf 1773 bool minus_f = FALSE;
ab019eaa 1774#endif
009d90df 1775 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1776 bool add_read_e_script = FALSE;
009d90df 1777
ca7b837b 1778 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1779
009d90df 1780 SvGROW(linestr_sv, 80);
76f68e9b 1781 sv_setpvs(linestr_sv,"");
312caa8e 1782
6224f72b 1783 init_main_stash();
54310121 1784
c7030b81
NC		 1785 {
1786 const char *s;
6224f72b
GS		 1787 for (argc--,argv++; argc > 0; argc--,argv++) {
1788 if (argv[0][0] != '-' || !argv[0][1])
1789 break;
6224f72b
GS		 1790 s = argv[0]+1;
1791 reswitch:
47f56822 1792 switch ((c = *s)) {
729a02f2 1793 case 'C':
1d5472a9
GS		 1794#ifndef PERL_STRICT_CR
1795 case '\r':
1796#endif
6224f72b
GS		 1797 case ' ':
1798 case '0':
1799 case 'F':
1800 case 'a':
1801 case 'c':
1802 case 'd':
1803 case 'D':
1804 case 'h':
1805 case 'i':
1806 case 'l':
1807 case 'M':
1808 case 'm':
1809 case 'n':
1810 case 'p':
1811 case 's':
1812 case 'u':
1813 case 'U':
1814 case 'v':
599cee73
PM		 1815 case 'W':
1816 case 'X':
6224f72b 1817 case 'w':
97bd5664 1818 if ((s = moreswitches(s)))
6224f72b
GS		 1819 goto reswitch;
1820 break;
33b78306 1821
1dbad523 1822 case 't':
22f7c9c9 1823 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS		 1824 if( !PL_tainting ) {
1825 PL_taint_warn = TRUE;
1826 PL_tainting = TRUE;
1827 }
1828 s++;
1829 goto reswitch;
6224f72b 1830 case 'T':
22f7c9c9 1831 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1832 PL_tainting = TRUE;
317ea90d 1833 PL_taint_warn = FALSE;
6224f72b
GS		 1834 s++;
1835 goto reswitch;
f86702cc 1836
bc9b29db
RH		 1837 case 'E':
1838 PL_minus_E = TRUE;
1839 /* FALL THROUGH */
6224f72b 1840 case 'e':
f20b2998 1841 forbid_setid('e', FALSE);
3280af22 1842 if (!PL_e_script) {
396482e1 1843 PL_e_script = newSVpvs("");
5486870f 1844 add_read_e_script = TRUE;
6224f72b
GS		 1845 }
1846 if (*++s)
3280af22 1847 sv_catpv(PL_e_script, s);
6224f72b 1848 else if (argv[1]) {
3280af22 1849 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1850 argc--,argv++;
1851 }
1852 else
47f56822 1853 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1854 sv_catpvs(PL_e_script, "\n");
6224f72b 1855 break;
afe37c7d 1856
20ef40cf 1857 case 'f':
f5542d3a 1858#ifdef USE_SITECUSTOMIZE
20ef40cf 1859 minus_f = TRUE;
f5542d3a 1860#endif
20ef40cf
GA		 1861 s++;
1862 goto reswitch;
1863
6224f72b 1864 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1865 forbid_setid('I', FALSE);
bd61b366 1866 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS		 1867 argc--,argv++;
1868 }
6224f72b 1869 if (s && *s) {
0df16ed7 1870 STRLEN len = strlen(s);
55b4bc1c 1871 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS		 1872 }
1873 else
a67e862a 1874 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1875 break;
6224f72b 1876 case 'S':
f20b2998 1877 forbid_setid('S', FALSE);
6224f72b
GS		 1878 dosearch = TRUE;
1879 s++;
1880 goto reswitch;
1881 case 'V':
7edfd0ef
NC		 1882 {
1883 SV *opts_prog;
1884
7edfd0ef 1885 if (*++s != ':') {
37ca4a5b 1886 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC		 1887 }
1888 else {
1889 ++s;
1890 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1891 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC		 1892 0, s, 0);
1893 s += strlen(s);
1894 }
37ca4a5b 1895 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC		 1896 /* don't look for script or read stdin */
1897 scriptname = BIT_BUCKET;
1898 goto reswitch;
6224f72b 1899 }
6224f72b 1900 case 'x':
737c24fc 1901 doextract = TRUE;
6224f72b 1902 s++;
304334da 1903 if (*s)
f4c556ac 1904 cddir = s;
6224f72b
GS		 1905 break;
1906 case 0:
1907 break;
1908 case '-':
1909 if (!*++s || isSPACE(*s)) {
1910 argc--,argv++;
1911 goto switch_end;
1912 }
1913 /* catch use of gnu style long options */
1914 if (strEQ(s, "version")) {
dd374669 1915 s = (char *)"v";
6224f72b
GS		 1916 goto reswitch;
1917 }
1918 if (strEQ(s, "help")) {
dd374669 1919 s = (char *)"h";
6224f72b
GS		 1920 goto reswitch;
1921 }
1922 s--;
1923 /* FALL THROUGH */
1924 default:
cea2e8a9 1925 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1926 }
1927 }
c7030b81
NC		 1928 }
1929
6224f72b 1930 switch_end:
54310121 1931
c7030b81
NC		 1932 {
1933 char *s;
1934
f675dbe5
CB		 1935 if (
1936#ifndef SECURE_INTERNAL_GETENV
1937 !PL_tainting &&
1938#endif
cf756827 1939 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1940 {
74288ac8
GS		 1941 while (isSPACE(*s))
1942 s++;
317ea90d 1943 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1944 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1945 PL_tainting = TRUE;
317ea90d
MS		 1946 PL_taint_warn = FALSE;
1947 }
74288ac8 1948 else {
bd61b366 1949 char *popt_copy = NULL;
74288ac8 1950 while (s && *s) {
54913509 1951 const char *d;
74288ac8
GS		 1952 while (isSPACE(*s))
1953 s++;
1954 if (*s == '-') {
1955 s++;
1956 if (isSPACE(*s))
1957 continue;
1958 }
4ea8f8fb 1959 d = s;
74288ac8
GS		 1960 if (!*s)
1961 break;
2b622f1a 1962 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1963 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1964 while (++s && *s) {
1965 if (isSPACE(*s)) {
cf756827 1966 if (!popt_copy) {
bfa6c418
NC		 1967 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1968 s = popt_copy + (s - d);
1969 d = popt_copy;
cf756827 1970 }
4ea8f8fb
MS		 1971 *s++ = '\0';
1972 break;
1973 }
1974 }
1c4db469 1975 if (*d == 't') {
317ea90d
MS		 1976 if( !PL_tainting ) {
1977 PL_taint_warn = TRUE;
1978 PL_tainting = TRUE;
1979 }
1c4db469 1980 } else {
97bd5664 1981 moreswitches(d);
1c4db469 1982 }
6224f72b 1983 }
6224f72b
GS		 1984 }
1985 }
c7030b81 1986 }
a0d0e21e 1987
43c0c913 1988#if defined(USE_SITECUSTOMIZE)
20ef40cf 1989 if (!minus_f) {
43c0c913 1990 /* The games with local $! are to avoid setting errno if there is no
404ad9dc 1991 sitecustomize script. */
43c0c913
NC		 1992# ifdef PERL_IS_MINIPERL
1993 AV *const inc = GvAV(PL_incgv);
1994 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
1995
1996 if (inc0) {
1997 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1998 Perl_newSVpvf(aTHX_
1999 "BEGIN { do {local $!; -f '%"SVf"/buildcustomize.pl'} && do '%"SVf"/buildcustomize.pl' }", *inc0, *inc0));
2000 }
2001# else
2002 /* SITELIB_EXP is a function call on Win32. */
404ad9dc 2003 const char *const sitelib = SITELIB_EXP;
29a861e7 2004 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC		 2005 Perl_newSVpvf(aTHX_
2006 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
43c0c913 2007# endif
20ef40cf
GA		 2008 }
2009#endif
2010
6224f72b
GS		 2011 if (!scriptname)
2012 scriptname = argv[0];
3280af22 2013 if (PL_e_script) {
6224f72b
GS		 2014 argc++,argv--;
2015 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2016 }
bd61b366 2017 else if (scriptname == NULL) {
6224f72b
GS		 2018#ifdef MSDOS
2019 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2020 moreswitches("h");
6224f72b
GS		 2021#endif
2022 scriptname = "-";
2023 }
2024
b7975bdd
NC		 2025 /* Set $^X early so that it can be used for relocatable paths in @INC */
2026 assert (!PL_tainted);
2027 TAINT;
2028 S_set_caret_X(aTHX);
2029 TAINT_NOT;
2cace6ac 2030 init_perllib();
6224f72b 2031
a52eba0e 2032 {
f20b2998 2033 bool suidscript = FALSE;
829372d3 2034
cc69b689 2035 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2036
2f9285f8 2037 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2038 linestr_sv, rsfp);
6224f72b 2039
64ca3a65 2040#ifndef PERL_MICRO
a52eba0e
NC		 2041# if defined(SIGCHLD) || defined(SIGCLD)
2042 {
2043# ifndef SIGCHLD
2044# define SIGCHLD SIGCLD
2045# endif
2046 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2047 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC		 2048 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2049 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC		 2050 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2051 }
0b5b802d 2052 }
a52eba0e 2053# endif
64ca3a65 2054#endif
0b5b802d 2055
737c24fc 2056 if (doextract) {
faef540c 2057
f20b2998 2058 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC		 2059 setuid scripts. */
2060 forbid_setid('x', suidscript);
f20b2998 2061 /* Hence you can't get here if suidscript is true */
faef540c 2062
2f9285f8 2063 find_beginning(linestr_sv, rsfp);
a52eba0e
NC		 2064 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2065 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2066 }
f4c556ac 2067 }
6224f72b 2068
ea726b52 2069 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS		 2070 CvUNIQUE_on(PL_compcv);
2071
dd2155a4 2072 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2073
dd69841b
BB		 2074 PL_isarev = newHV();
2075
0c4f7ff0 2076 boot_core_PerlIO();
6224f72b 2077 boot_core_UNIVERSAL();
e1a479c5 2078 boot_core_mro();
4a5df386 2079 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS		 2080
2081 if (xsinit)
acfe0abc 2082 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2083#ifndef PERL_MICRO
d0d72822 2084#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2085 init_os_extras();
6224f72b 2086#endif
64ca3a65 2087#endif
6224f72b 2088
29209bc5 2089#ifdef USE_SOCKS
1b9c9cf5
DH		 2090# ifdef HAS_SOCKS5_INIT
2091 socks5_init(argv[0]);
2092# else
29209bc5 2093 SOCKSinit(argv[0]);
1b9c9cf5 2094# endif
ac27b0f5 2095#endif
29209bc5 2096
6224f72b
GS		 2097 init_predump_symbols();
2098 /* init_postdump_symbols not currently designed to be called */
2099 /* more than once (ENV isn't cleared first, for example) */
2100 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2101 if (!PL_do_undump)
6224f72b
GS		 2102 init_postdump_symbols(argc,argv,env);
2103
27da23d5
JH		 2104 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2105 * or explicitly in some platforms.
085a54d9 2106 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2107 * look like the user wants to use UTF-8. */
a0fd4948 2108#if defined(__SYMBIAN32__)
27da23d5
JH		 2109 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2110#endif
e27b5b51 2111# ifndef PERL_IS_MINIPERL
06e66572
JH		 2112 if (PL_unicode) {
2113 /* Requires init_predump_symbols(). */
a05d7ebb 2114 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH		 2115 IO* io;
2116 PerlIO* fp;
2117 SV* sv;
2118
a05d7ebb 2119 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2120 * and the default open disciplines. */
a05d7ebb
JH		 2121 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2122 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2123 (fp = IoIFP(io)))
2124 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2125 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2126 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2127 (fp = IoOFP(io)))
2128 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2129 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2130 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2131 (fp = IoOFP(io)))
2132 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2133 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC		 2134 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2135 SVt_PV)))) {
a05d7ebb
JH		 2136 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2137 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2138 if (in) {
2139 if (out)
76f68e9b 2140 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2141 else
76f68e9b 2142 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH		 2143 }
2144 else if (out)
76f68e9b 2145 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH		 2146 SvSETMAGIC(sv);
2147 }
b310b053
JH		 2148 }
2149 }
e27b5b51 2150#endif
b310b053 2151
c7030b81
NC		 2152 {
2153 const char *s;
4ffa73a3
JH		 2154 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2155 if (strEQ(s, "unsafe"))
2156 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2157 else if (strEQ(s, "safe"))
2158 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2159 else
2160 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2161 }
c7030b81 2162 }
4ffa73a3 2163
81d86705 2164#ifdef PERL_MAD
c7030b81
NC		 2165 {
2166 const char *s;
81d86705
NC		 2167 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2168 PL_madskills = 1;
2169 PL_minus_c = 1;
2170 if (!s || !s[0])
2171 PL_xmlfp = PerlIO_stdout();
2172 else {
2173 PL_xmlfp = PerlIO_open(s, "w");
2174 if (!PL_xmlfp)
2175 Perl_croak(aTHX_ "Can't open %s", s);
2176 }
1a9a51d4 2177 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2178 }
c7030b81
NC		 2179 }
2180
2181 {
2182 const char *s;
81d86705
NC		 2183 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2184 PL_madskills = atoi(s);
1a9a51d4 2185 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2186 }
c7030b81 2187 }
81d86705
NC		 2188#endif
2189
8eaa0acf 2190 lex_start(linestr_sv, rsfp, 0);
219f7226 2191 PL_subname = newSVpvs("main");
6224f72b 2192
5486870f
DM		 2193 if (add_read_e_script)
2194 filter_add(read_e_script, NULL);
2195
6224f72b
GS		 2196 /* now parse the script */
2197
93189314 2198 SETERRNO(0,SS_NORMAL);
28ac2b49 2199 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2200 if (PL_minus_c)
cea2e8a9 2201 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2202 else {
cea2e8a9 2203 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2204 PL_origfilename);
6224f72b
GS		 2205 }
2206 }
57843af0 2207 CopLINE_set(PL_curcop, 0);
3280af22 2208 PL_curstash = PL_defstash;
3280af22
NIS		 2209 if (PL_e_script) {
2210 SvREFCNT_dec(PL_e_script);
a0714e2c 2211 PL_e_script = NULL;
6224f72b
GS		 2212 }
2213
3280af22 2214 if (PL_do_undump)
6224f72b
GS		 2215 my_unexec();
2216
57843af0
GS		 2217 if (isWARN_ONCE) {
2218 SAVECOPFILE(PL_curcop);
2219 SAVECOPLINE(PL_curcop);
3280af22 2220 gv_check(PL_defstash);
57843af0 2221 }
6224f72b
GS		 2222
2223 LEAVE;
2224 FREETMPS;
2225
2226#ifdef MYMALLOC
f6a607bc
RGS		 2227 {
2228 const char *s;
6224f72b
GS		 2229 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2230 dump_mstats("after compilation:");
f6a607bc 2231 }
6224f72b
GS		 2232#endif
2233
2234 ENTER;
febb3a6d 2235 PL_restartjmpenv = NULL;
3280af22 2236 PL_restartop = 0;
312caa8e 2237 return NULL;
6224f72b
GS		 2238}
2239
954c1994
GS		 2240/*
2241=for apidoc perl_run
2242
2243Tells a Perl interpreter to run. See L<perlembed>.
2244
2245=cut
2246*/
2247
6224f72b 2248int
0cb96387 2249perl_run(pTHXx)
6224f72b 2250{
97aff369 2251 dVAR;
6224f72b 2252 I32 oldscope;
14dd3ad8 2253 int ret = 0;
db36c5a1 2254 dJMPENV;
6224f72b 2255
7918f24d
NC		 2256 PERL_ARGS_ASSERT_PERL_RUN;
2257#ifndef MULTIPLICITY
ed6c66dd 2258 PERL_UNUSED_ARG(my_perl);
7918f24d 2259#endif
9d4ba2ae 2260
3280af22 2261 oldscope = PL_scopestack_ix;
96e176bf
CL		 2262#ifdef VMS
2263 VMSISH_HUSHED = 0;
2264#endif
6224f72b 2265
14dd3ad8 2266 JMPENV_PUSH(ret);
6224f72b
GS		 2267 switch (ret) {
2268 case 1:
2269 cxstack_ix = -1; /* start context stack again */
312caa8e 2270 goto redo_body;
14dd3ad8 2271 case 0: /* normal completion */
14dd3ad8
GS		 2272 redo_body:
2273 run_body(oldscope);
14dd3ad8
GS		 2274 /* FALL THROUGH */
2275 case 2: /* my_exit() */
3280af22 2276 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 2277 LEAVE;
2278 FREETMPS;
3280af22 2279 PL_curstash = PL_defstash;
3a1ee7e8 2280 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2281 PL_endav && !PL_minus_c) {
ca7b837b 2282 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2283 call_list(oldscope, PL_endav);
9ebf26ad 2284 }
6224f72b
GS		 2285#ifdef MYMALLOC
2286 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2287 dump_mstats("after execution: ");
2288#endif
37038d91 2289 ret = STATUS_EXIT;
14dd3ad8 2290 break;
6224f72b 2291 case 3:
312caa8e
CS		 2292 if (PL_restartop) {
2293 POPSTACK_TO(PL_mainstack);
2294 goto redo_body;
6224f72b 2295 }
bf49b057 2296 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2297 FREETMPS;
14dd3ad8
GS		 2298 ret = 1;
2299 break;
6224f72b
GS		 2300 }
2301
14dd3ad8
GS		 2302 JMPENV_POP;
2303 return ret;
312caa8e
CS		 2304}
2305
dd374669 2306STATIC void
14dd3ad8
GS		 2307S_run_body(pTHX_ I32 oldscope)
2308{
97aff369 2309 dVAR;
6224f72b 2310 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2311 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2312
3280af22 2313 if (!PL_restartop) {
81d86705
NC		 2314#ifdef PERL_MAD
2315 if (PL_xmlfp) {
2316 xmldump_all();
2317 exit(0); /* less likely to core dump than my_exit(0) */
2318 }
2319#endif
cf2782cd 2320#ifdef DEBUGGING
f0e3f042
CS		 2321 if (DEBUG_x_TEST || DEBUG_B_TEST)
2322 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC		 2323 if (!DEBUG_q_TEST)
2324 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2325#endif
6224f72b 2326
3280af22 2327 if (PL_minus_c) {
bf49b057 2328 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS		 2329 my_exit(0);
2330 }
3280af22 2331 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2332 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2333 if (PL_initav) {
ca7b837b 2334 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2335 call_list(oldscope, PL_initav);
9ebf26ad 2336 }
f1fac472
NC		 2337#ifdef PERL_DEBUG_READONLY_OPS
2338 Perl_pending_Slabs_to_ro(aTHX);
2339#endif
6224f72b
GS		 2340 }
2341
2342 /* do it */
2343
ca7b837b 2344 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2345
3280af22 2346 if (PL_restartop) {
febb3a6d 2347 PL_restartjmpenv = NULL;
533c011a 2348 PL_op = PL_restartop;
3280af22 2349 PL_restartop = 0;
cea2e8a9 2350 CALLRUNOPS(aTHX);
6224f72b 2351 }
3280af22
NIS		 2352 else if (PL_main_start) {
2353 CvDEPTH(PL_main_cv) = 1;
533c011a 2354 PL_op = PL_main_start;
cea2e8a9 2355 CALLRUNOPS(aTHX);
6224f72b 2356 }
f6b3007c
JH		 2357 my_exit(0);
2358 /* NOTREACHED */
6224f72b
GS		 2359}
2360
954c1994 2361/*
ccfc67b7
JH		 2362=head1 SV Manipulation Functions
2363
954c1994
GS		 2364=for apidoc p||get_sv
2365
64ace3f8
NC		 2366Returns the SV of the specified Perl scalar. C<flags> are passed to
2367C<gv_fetchpv>. If C<GV_ADD> is set and the
2368Perl variable does not exist then it will be created. If C<flags> is zero
2369and the variable does not exist then NULL is returned.
954c1994
GS		 2370
2371=cut
2372*/
2373
6224f72b 2374SV*
64ace3f8 2375Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS		 2376{
2377 GV *gv;
7918f24d
NC		 2378
2379 PERL_ARGS_ASSERT_GET_SV;
2380
64ace3f8 2381 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS		 2382 if (gv)
2383 return GvSV(gv);
a0714e2c 2384 return NULL;
6224f72b
GS		 2385}
2386
954c1994 2387/*
ccfc67b7
JH		 2388=head1 Array Manipulation Functions
2389
954c1994
GS		 2390=for apidoc p||get_av
2391
f0b90de1
SF		 2392Returns the AV of the specified Perl global or package array with the given
2393name (so it won't work on lexical variables). C<flags> are passed
2394to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC		 2395Perl variable does not exist then it will be created. If C<flags> is zero
2396and the variable does not exist then NULL is returned.
954c1994 2397
f0b90de1
SF		 2398Perl equivalent: C<@{"$name"}>.
2399
954c1994
GS		 2400=cut
2401*/
2402
6224f72b 2403AV*
cbfd0a87 2404Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2405{
cbfd0a87 2406 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC		 2407
2408 PERL_ARGS_ASSERT_GET_AV;
2409
cbfd0a87 2410 if (flags)
6224f72b
GS		 2411 return GvAVn(gv);
2412 if (gv)
2413 return GvAV(gv);
7d49f689 2414 return NULL;
6224f72b
GS		 2415}
2416
954c1994 2417/*
ccfc67b7
JH		 2418=head1 Hash Manipulation Functions
2419
954c1994
GS		 2420=for apidoc p||get_hv
2421
6673a63c
NC		 2422Returns the HV of the specified Perl hash. C<flags> are passed to
2423C<gv_fetchpv>. If C<GV_ADD> is set and the
2424Perl variable does not exist then it will be created. If C<flags> is zero
2425and the variable does not exist then NULL is returned.
954c1994
GS		 2426
2427=cut
2428*/
2429
6224f72b 2430HV*
6673a63c 2431Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2432{
6673a63c 2433 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC		 2434
2435 PERL_ARGS_ASSERT_GET_HV;
2436
6673a63c 2437 if (flags)
a0d0e21e
LW		 2438 return GvHVn(gv);
2439 if (gv)
2440 return GvHV(gv);
5c284bb0 2441 return NULL;
a0d0e21e
LW		 2442}
2443
954c1994 2444/*
ccfc67b7
JH		 2445=head1 CV Manipulation Functions
2446
780a5241
NC		 2447=for apidoc p||get_cvn_flags
2448
2449Returns the CV of the specified Perl subroutine. C<flags> are passed to
2450C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2451exist then it will be declared (which has the same effect as saying
2452C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2453then NULL is returned.
2454
954c1994
GS		 2455=for apidoc p||get_cv
2456
780a5241 2457Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS		 2458
2459=cut
2460*/
2461
a0d0e21e 2462CV*
780a5241 2463Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2464{
780a5241 2465 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS		 2466 /* XXX this is probably not what they think they're getting.
2467 * It has the same effect as "sub name;", i.e. just a forward
2468 * declaration! */
7918f24d
NC		 2469
2470 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2471
780a5241 2472 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2473 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2474 return newSUB(start_subparse(FALSE, 0),
780a5241 2475 newSVOP(OP_CONST, 0, sv),
5f66b61c 2476 NULL, NULL);
780a5241 2477 }
a0d0e21e 2478 if (gv)
8ebc5c01 2479 return GvCVu(gv);
601f1833 2480 return NULL;
a0d0e21e
LW		 2481}
2482
2c67934f
NC		 2483/* Nothing in core calls this now, but we can't replace it with a macro and
2484 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC		 2485CV*
2486Perl_get_cv(pTHX_ const char *name, I32 flags)
2487{
7918f24d
NC		 2488 PERL_ARGS_ASSERT_GET_CV;
2489
780a5241
NC		 2490 return get_cvn_flags(name, strlen(name), flags);
2491}
2492
79072805
LW		 2493/* Be sure to refetch the stack pointer after calling these routines. */
2494
954c1994 2495/*
ccfc67b7
JH		 2496
2497=head1 Callback Functions
2498
954c1994
GS		 2499=for apidoc p||call_argv
2500
f0b90de1
SF		 2501Performs a callback to the specified named and package-scoped Perl subroutine
2502with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2503
2504Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS		 2505
2506=cut
2507*/
2508
a0d0e21e 2509I32
8f42b153 2510Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2511
8ac85365
NIS		 2512 /* See G_* flags in cop.h */
2513 /* null terminated arg list */
8990e307 2514{
97aff369 2515 dVAR;
a0d0e21e 2516 dSP;
8990e307 2517
7918f24d
NC		 2518 PERL_ARGS_ASSERT_CALL_ARGV;
2519
924508f0 2520 PUSHMARK(SP);
a0d0e21e 2521 if (argv) {
8990e307 2522 while (*argv) {
6e449a3a 2523 mXPUSHs(newSVpv(*argv,0));
8990e307
LW		 2524 argv++;
2525 }
a0d0e21e 2526 PUTBACK;
8990e307 2527 }
864dbfa3 2528 return call_pv(sub_name, flags);
8990e307
LW		 2529}
2530
954c1994
GS		 2531/*
2532=for apidoc p||call_pv
2533
2534Performs a callback to the specified Perl sub. See L<perlcall>.
2535
2536=cut
2537*/
2538
a0d0e21e 2539I32
864dbfa3 2540Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 2541 /* name of the subroutine */
2542 /* See G_* flags in cop.h */
a0d0e21e 2543{
7918f24d
NC		 2544 PERL_ARGS_ASSERT_CALL_PV;
2545
0da0e728 2546 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW		 2547}
2548
954c1994
GS		 2549/*
2550=for apidoc p||call_method
2551
2552Performs a callback to the specified Perl method. The blessed object must
2553be on the stack. See L<perlcall>.
2554
2555=cut
2556*/
2557
a0d0e21e 2558I32
864dbfa3 2559Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 2560 /* name of the subroutine */
2561 /* See G_* flags in cop.h */
a0d0e21e 2562{
46ca9bac 2563 STRLEN len;
7918f24d
NC		 2564 PERL_ARGS_ASSERT_CALL_METHOD;
2565
46ca9bac
GF		 2566 len = strlen(methname);
2567
2568 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2569 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW		 2570}
2571
2572/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 2573/*
2574=for apidoc p||call_sv
2575
2576Performs a callback to the Perl sub whose name is in the SV. See
2577L<perlcall>.
2578
2579=cut
2580*/
2581
a0d0e21e 2582I32
001d637e 2583Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2584 /* See G_* flags in cop.h */
a0d0e21e 2585{
27da23d5 2586 dVAR; dSP;
a0d0e21e 2587 LOGOP myop; /* fake syntax tree node */
968b3946 2588 UNOP method_op;
aa689395 2589 I32 oldmark;
8ea43dc8 2590 VOL I32 retval = 0;
a0d0e21e 2591 I32 oldscope;
54310121 2592 bool oldcatch = CATCH_GET;
6224f72b 2593 int ret;
c4420975 2594 OP* const oldop = PL_op;
db36c5a1 2595 dJMPENV;
1e422769 2596
7918f24d
NC		 2597 PERL_ARGS_ASSERT_CALL_SV;
2598
a0d0e21e
LW		 2599 if (flags & G_DISCARD) {
2600 ENTER;
2601 SAVETMPS;
2602 }
2f8edad0
NC		 2603 if (!(flags & G_WANT)) {
2604 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2605 */
2606 flags |= G_SCALAR;
2607 }
a0d0e21e 2608
aa689395 2609 Zero(&myop, 1, LOGOP);
5f66b61c 2610 myop.op_next = NULL;
f51d4af5 2611 if (!(flags & G_NOARGS))
aa689395 2612 myop.op_flags |= OPf_STACKED;
4f911530 2613 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2614 SAVEOP();
533c011a 2615 PL_op = (OP*)&myop;
aa689395 2616
3280af22
NIS		 2617 EXTEND(PL_stack_sp, 1);
2618 *++PL_stack_sp = sv;
aa689395 2619 oldmark = TOPMARK;
3280af22 2620 oldscope = PL_scopestack_ix;
a0d0e21e 2621
3280af22 2622 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2623 /* Handle first BEGIN of -d. */
3280af22 2624 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 2625 /* Try harder, since this may have been a sighandler, thus
2626 * curstash may be meaningless. */
ea726b52 2627 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2628 && !(flags & G_NODEBUG))
533c011a 2629 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2630
968b3946
GS		 2631 if (flags & G_METHOD) {
2632 Zero(&method_op, 1, UNOP);
2633 method_op.op_next = PL_op;
2634 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2635 method_op.op_type = OP_METHOD;
968b3946 2636 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2637 myop.op_type = OP_ENTERSUB;
f39d0b86 2638 PL_op = (OP*)&method_op;
968b3946
GS		 2639 }
2640
312caa8e 2641 if (!(flags & G_EVAL)) {
0cdb2077 2642 CATCH_SET(TRUE);
d6f07c05 2643 CALL_BODY_SUB((OP*)&myop);
312caa8e 2644 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2645 CATCH_SET(oldcatch);
312caa8e
CS		 2646 }
2647 else {
d78bda3d 2648 myop.op_other = (OP*)&myop;
3280af22 2649 PL_markstack_ptr--;
edb2152a 2650 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2651 PL_markstack_ptr++;
a0d0e21e 2652
14dd3ad8 2653 JMPENV_PUSH(ret);
edb2152a 2654
6224f72b
GS		 2655 switch (ret) {
2656 case 0:
14dd3ad8 2657 redo_body:
d6f07c05 2658 CALL_BODY_SUB((OP*)&myop);
312caa8e 2659 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2660 if (!(flags & G_KEEPERR)) {
ab69dbc2 2661 CLEAR_ERRSV();
8433848b 2662 }
a0d0e21e 2663 break;
6224f72b 2664 case 1:
f86702cc 2665 STATUS_ALL_FAILURE;
a0d0e21e 2666 /* FALL THROUGH */
6224f72b 2667 case 2:
a0d0e21e 2668 /* my_exit() was called */
3280af22 2669 PL_curstash = PL_defstash;
a0d0e21e 2670 FREETMPS;
14dd3ad8 2671 JMPENV_POP;
f86702cc 2672 my_exit_jump();
a0d0e21e 2673 /* NOTREACHED */
6224f72b 2674 case 3:
3280af22 2675 if (PL_restartop) {
febb3a6d 2676 PL_restartjmpenv = NULL;
533c011a 2677 PL_op = PL_restartop;
3280af22 2678 PL_restartop = 0;
312caa8e 2679 goto redo_body;
a0d0e21e 2680 }
3280af22 2681 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2682 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW		 2683 retval = 0;
2684 else {
2685 retval = 1;
3280af22 2686 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2687 }
312caa8e 2688 break;
a0d0e21e 2689 }
a0d0e21e 2690
edb2152a
NC		 2691 if (PL_scopestack_ix > oldscope)
2692 delete_eval_scope();
14dd3ad8 2693 JMPENV_POP;
a0d0e21e 2694 }
1e422769 2695
a0d0e21e 2696 if (flags & G_DISCARD) {
3280af22 2697 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 2698 retval = 0;
2699 FREETMPS;
2700 LEAVE;
2701 }
533c011a 2702 PL_op = oldop;
a0d0e21e
LW		 2703 return retval;
2704}
2705
6e72f9df 2706/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2707
954c1994
GS		 2708/*
2709=for apidoc p||eval_sv
2710
be064c4a
DM		 2711Tells Perl to C<eval> the string in the SV. It supports the same flags
2712as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS		 2713
2714=cut
2715*/
2716
a0d0e21e 2717I32
864dbfa3 2718Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2719
8ac85365 2720 /* See G_* flags in cop.h */
a0d0e21e 2721{
97aff369 2722 dVAR;
924508f0 2723 dSP;
a0d0e21e 2724 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP		 2725 VOL I32 oldmark = SP - PL_stack_base;
2726 VOL I32 retval = 0;
6224f72b 2727 int ret;
c4420975 2728 OP* const oldop = PL_op;
db36c5a1 2729 dJMPENV;
84902520 2730
7918f24d
NC		 2731 PERL_ARGS_ASSERT_EVAL_SV;
2732
4633a7c4
LW		 2733 if (flags & G_DISCARD) {
2734 ENTER;
2735 SAVETMPS;
2736 }
2737
462e5cf6 2738 SAVEOP();
533c011a
NIS		 2739 PL_op = (OP*)&myop;
2740 Zero(PL_op, 1, UNOP);
3280af22
NIS		 2741 EXTEND(PL_stack_sp, 1);
2742 *++PL_stack_sp = sv;
79072805 2743
4633a7c4
LW		 2744 if (!(flags & G_NOARGS))
2745 myop.op_flags = OPf_STACKED;
5f66b61c 2746 myop.op_next = NULL;
6e72f9df 2747 myop.op_type = OP_ENTEREVAL;
4f911530 2748 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df 2749 if (flags & G_KEEPERR)
2750 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2751
dedbcade
DM		 2752 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2753 * before a PUSHEVAL, which corrupts the stack after a croak */
2754 TAINT_PROPER("eval_sv()");
2755
14dd3ad8 2756 JMPENV_PUSH(ret);
6224f72b
GS		 2757 switch (ret) {
2758 case 0:
14dd3ad8 2759 redo_body:
2ba65d5f
DM		 2760 if (PL_op == (OP*)(&myop)) {
2761 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2762 if (!PL_op)
2763 goto fail; /* failed in compilation */
2764 }
4aca2f62 2765 CALLRUNOPS(aTHX);
312caa8e 2766 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2767 if (!(flags & G_KEEPERR)) {
ab69dbc2 2768 CLEAR_ERRSV();
8433848b 2769 }
4633a7c4 2770 break;
6224f72b 2771 case 1:
f86702cc 2772 STATUS_ALL_FAILURE;
4633a7c4 2773 /* FALL THROUGH */
6224f72b 2774 case 2:
4633a7c4 2775 /* my_exit() was called */
3280af22 2776 PL_curstash = PL_defstash;
4633a7c4 2777 FREETMPS;
14dd3ad8 2778 JMPENV_POP;
f86702cc 2779 my_exit_jump();
4633a7c4 2780 /* NOTREACHED */
6224f72b 2781 case 3:
3280af22 2782 if (PL_restartop) {
febb3a6d 2783 PL_restartjmpenv = NULL;
533c011a 2784 PL_op = PL_restartop;
3280af22 2785 PL_restartop = 0;
312caa8e 2786 goto redo_body;
4633a7c4 2787 }
4aca2f62 2788 fail:
3280af22 2789 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2790 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW		 2791 retval = 0;
2792 else {
2793 retval = 1;
3280af22 2794 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2795 }
312caa8e 2796 break;
4633a7c4
LW		 2797 }
2798
14dd3ad8 2799 JMPENV_POP;
4633a7c4 2800 if (flags & G_DISCARD) {
3280af22 2801 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2802 retval = 0;
2803 FREETMPS;
2804 LEAVE;
2805 }
533c011a 2806 PL_op = oldop;
4633a7c4
LW		 2807 return retval;
2808}
2809
954c1994
GS		 2810/*
2811=for apidoc p||eval_pv
2812
2813Tells Perl to C<eval> the given string and return an SV* result.
2814
2815=cut
2816*/
2817
137443ea 2818SV*
864dbfa3 2819Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2820{
97aff369 2821 dVAR;
137443ea 2822 dSP;
2823 SV* sv = newSVpv(p, 0);
2824
7918f24d
NC		 2825 PERL_ARGS_ASSERT_EVAL_PV;
2826
864dbfa3 2827 eval_sv(sv, G_SCALAR);
137443ea 2828 SvREFCNT_dec(sv);
2829
2830 SPAGAIN;
2831 sv = POPs;
2832 PUTBACK;
2833
2d8e6c8d 2834 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2835 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2836 }
137443ea 2837
2838 return sv;
2839}
2840
4633a7c4
LW		 2841/* Require a module. */
2842
954c1994 2843/*
ccfc67b7
JH		 2844=head1 Embedding Functions
2845
954c1994
GS		 2846=for apidoc p||require_pv
2847
7d3fb230
BS		 2848Tells Perl to C<require> the file named by the string argument. It is
2849analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2850implemented that way; consider using load_module instead.
954c1994 2851
7d3fb230 2852=cut */
954c1994 2853
4633a7c4 2854void
864dbfa3 2855Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2856{
97aff369 2857 dVAR;
d3acc0f7 2858 dSP;
97aff369 2859 SV* sv;
7918f24d
NC		 2860
2861 PERL_ARGS_ASSERT_REQUIRE_PV;
2862
e788e7d3 2863 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2864 PUTBACK;
be41e5d9
NC		 2865 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2866 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP		 2867 SPAGAIN;
2868 POPSTACK;
79072805
LW		 2869}
2870
76e3520e 2871STATIC void
e1ec3a88 2872S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2873{
ab821d7f 2874 /* This message really ought to be max 23 lines.
75c72d73 2875 * Removed -h because the user already knows that option. Others? */
fb73857a 2876
1566c39d
NC		 2877 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2878 minimum of 509 character string literals. */
27da23d5 2879 static const char * const usage_msg[] = {
1566c39d
NC		 2880" -0[octal] specify record separator (\\0, if no argument)\n"
2881" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2882" -C[number/list] enables the listed Unicode features\n"
2883" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2884" -d[:debugger] run program under debugger\n"
2885" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2886" -e program one line of program (several -e's allowed, omit programfile)\n"
2887" -E program like -e, but enables all optional features\n"
2888" -f don't do $sitelib/sitecustomize.pl at startup\n"
2889" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2890" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2891" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2892" -l[octal] enable line ending processing, specifies line terminator\n"
2893" -[mM][-]module execute \"use/no module...\" before executing program\n"
2894" -n assume \"while (<>) { ... }\" loop around program\n"
2895" -p assume loop like -n but print line also, like sed\n"
2896" -s enable rudimentary parsing for switches after programfile\n"
2897" -S look for programfile using PATH environment variable\n",
2898" -t enable tainting warnings\n"
2899" -T enable tainting checks\n"
2900" -u dump core after parsing program\n"
2901" -U allow unsafe operations\n"
2902" -v print version, patchlevel and license\n"
2903" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2904" -w enable many useful warnings\n"
1566c39d
NC		 2905" -W enable all warnings\n"
2906" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2907" -X disable all warnings\n"
2908" \n"
2909"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a 2910NULL
2911};
27da23d5 2912 const char * const *p = usage_msg;
1566c39d 2913 PerlIO *out = PerlIO_stdout();
fb73857a 2914
7918f24d
NC		 2915 PERL_ARGS_ASSERT_USAGE;
2916
1566c39d
NC		 2917 PerlIO_printf(out,
2918 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2919 name);
fb73857a 2920 while (*p)
1566c39d 2921 PerlIO_puts(out, *p++);
4633a7c4
LW		 2922}
2923
b4ab917c
DM		 2924/* convert a string of -D options (or digits) into an int.
2925 * sets *s to point to the char after the options */
2926
2927#ifdef DEBUGGING
2928int
e1ec3a88 2929Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2930{
27da23d5 2931 static const char * const usage_msgd[] = {
651b8f1a
NC		 2932 " Debugging flag values: (see also -d)\n"
2933 " p Tokenizing and parsing (with v, displays parse stack)\n"
2934 " s Stack snapshots (with v, displays all stacks)\n"
2935 " l Context (loop) stack processing\n"
2936 " t Trace execution\n"
2937 " o Method and overloading resolution\n",
2938 " c String/numeric conversions\n"
2939 " P Print profiling info, source file input state\n"
2940 " m Memory and SV allocation\n"
2941 " f Format processing\n"
2942 " r Regular expression parsing and execution\n"
2943 " x Syntax tree dump\n",
2944 " u Tainting checks\n"
2945 " H Hash dump -- usurps values()\n"
2946 " X Scratchpad allocation\n"
2947 " D Cleaning up\n"
2948 " T Tokenising\n"
2949 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2950 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2951 " v Verbose: use in conjunction with other flags\n"
2952 " C Copy On Write\n"
2953 " A Consistency checks on internal structures\n"
2954 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2955 " M trace smart match resolution\n"
2956 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC		 2957 NULL
2958 };
b4ab917c 2959 int i = 0;
7918f24d
NC		 2960
2961 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2962
b4ab917c
DM		 2963 if (isALPHA(**s)) {
2964 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2965 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM		 2966
2967 for (; isALNUM(**s); (*s)++) {
c4420975 2968 const char * const d = strchr(debopts,**s);
b4ab917c
DM		 2969 if (d)
2970 i |= 1 << (d - debopts);
2971 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC		 2972 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2973 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM		 2974 }
2975 }
e6e64d9b 2976 else if (isDIGIT(**s)) {
b4ab917c
DM		 2977 i = atoi(*s);
2978 for (; isALNUM(**s); (*s)++) ;
2979 }
ddcf8bc1 2980 else if (givehelp) {
06e869a4 2981 const char *const *p = usage_msgd;
651b8f1a 2982 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 2983 }
b4ab917c
DM		 2984# ifdef EBCDIC
2985 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2986 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2987 "-Dp not implemented on this platform\n");
2988# endif
2989 return i;
2990}
2991#endif
2992
79072805
LW		 2993/* This routine handles any switches that can be given during run */
2994
c7030b81
NC		 2995const char *
2996Perl_moreswitches(pTHX_ const char *s)
79072805 2997{
27da23d5 2998 dVAR;
84c133a0 2999 UV rschar;
0544e6df 3000 const char option = *s; /* used to remember option in -m/-M code */
79072805 3001
7918f24d
NC		 3002 PERL_ARGS_ASSERT_MORESWITCHES;
3003
79072805
LW		 3004 switch (*s) {
3005 case '0':
a863c7d1 3006 {
f2095865 3007 I32 flags = 0;
a3b680e6 3008 STRLEN numlen;
f2095865
JH		 3009
3010 SvREFCNT_dec(PL_rs);
3011 if (s[1] == 'x' && s[2]) {
a3b680e6 3012 const char *e = s+=2;
f2095865
JH		 3013 U8 *tmps;
3014
a3b680e6
AL		 3015 while (*e)
3016 e++;
f2095865
JH		 3017 numlen = e - s;
3018 flags = PERL_SCAN_SILENT_ILLDIGIT;
3019 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3020 if (s + numlen < e) {
3021 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3022 numlen = 0;
3023 s--;
3024 }
396482e1 3025 PL_rs = newSVpvs("");
c5661c80 3026 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH		 3027 tmps = (U8*)SvPVX(PL_rs);
3028 uvchr_to_utf8(tmps, rschar);
3029 SvCUR_set(PL_rs, UNISKIP(rschar));
3030 SvUTF8_on(PL_rs);
3031 }
3032 else {
3033 numlen = 4;
3034 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3035 if (rschar & ~((U8)~0))
3036 PL_rs = &PL_sv_undef;
3037 else if (!rschar && numlen >= 2)
396482e1 3038 PL_rs = newSVpvs("");
f2095865
JH		 3039 else {
3040 char ch = (char)rschar;
3041 PL_rs = newSVpvn(&ch, 1);
3042 }
3043 }
64ace3f8 3044 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3045 return s + numlen;
a863c7d1 3046 }
46487f74 3047 case 'C':
a05d7ebb 3048 s++;
dd374669 3049 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC		 3050 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3051 PL_utf8cache = -1;
46487f74 3052 return s;
2304df62 3053 case 'F':
3280af22 3054 PL_minus_F = TRUE;
ebce5377
RGS		 3055 PL_splitstr = ++s;
3056 while (*s && !isSPACE(*s)) ++s;
e49e380e 3057 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3058 return s;
79072805 3059 case 'a':
3280af22 3060 PL_minus_a = TRUE;
79072805
LW		 3061 s++;
3062 return s;
3063 case 'c':
3280af22 3064 PL_minus_c = TRUE;
79072805
LW		 3065 s++;
3066 return s;
3067 case 'd':
f20b2998 3068 forbid_setid('d', FALSE);
4633a7c4 3069 s++;
2cbb2ee1
RGS		 3070
3071 /* -dt indicates to the debugger that threads will be used */
3072 if (*s == 't' && !isALNUM(s[1])) {
3073 ++s;
3074 my_setenv("PERL5DB_THREADED", "1");
3075 }
3076
70c94a19
RR		 3077 /* The following permits -d:Mod to accepts arguments following an =
3078 in the fashion that -MSome::Mod does. */
3079 if (*s == ':' || *s == '=') {
b19934fb
NC		 3080 const char *start;
3081 const char *end;
3082 SV *sv;
3083
3084 if (*++s == '-') {
3085 ++s;
3086 sv = newSVpvs("no Devel::");
3087 } else {
3088 sv = newSVpvs("use Devel::");
3089 }
3090
3091 start = s;
3092 end = s + strlen(s);
f85893a1 3093
b19934fb 3094 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR		 3095 while(isALNUM(*s) || *s==':') ++s;
3096 if (*s != '=')
f85893a1 3097 sv_catpvn(sv, start, end - start);
70c94a19
RR		 3098 else {
3099 sv_catpvn(sv, start, s-start);
95a2b409
RGS		 3100 /* Don't use NUL as q// delimiter here, this string goes in the
3101 * environment. */
3102 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3103 }
f85893a1 3104 s = end;
184f32ec 3105 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3106 SvREFCNT_dec(sv);
4633a7c4 3107 }
ed094faf 3108 if (!PL_perldb) {
3280af22 3109 PL_perldb = PERLDB_ALL;
a0d0e21e 3110 init_debugger();
ed094faf 3111 }
79072805
LW		 3112 return s;
3113 case 'D':
0453d815 3114 {
79072805 3115#ifdef DEBUGGING
f20b2998 3116 forbid_setid('D', FALSE);
b4ab917c 3117 s++;
dd374669 3118 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3119#else /* !DEBUGGING */
0453d815 3120 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3121 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3122 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3123 for (s++; isALNUM(*s); s++) ;
79072805 3124#endif
79072805 3125 return s;
0453d815 3126 }
4633a7c4 3127 case 'h':
ac27b0f5 3128 usage(PL_origargv[0]);
7ca617d0 3129 my_exit(0);
79072805 3130 case 'i':
43c5f42d 3131 Safefree(PL_inplace);
c030f24b
GH		 3132#if defined(__CYGWIN__) /* do backup extension automagically */
3133 if (*(s+1) == '\0') {
c86a4f2e 3134 PL_inplace = savepvs(".bak");
c030f24b
GH		 3135 return s+1;
3136 }
3137#endif /* __CYGWIN__ */
5ef5d758 3138 {
d4c19fe8 3139 const char * const start = ++s;
5ef5d758
NC		 3140 while (*s && !isSPACE(*s))
3141 ++s;
3142
3143 PL_inplace = savepvn(start, s - start);
3144 }
7b8d334a 3145 if (*s) {
5ef5d758 3146 ++s;
7b8d334a 3147 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3148 s++;
7b8d334a 3149 }
fb73857a 3150 return s;
4e49a025 3151 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3152 forbid_setid('I', FALSE);
fb73857a 3153 ++s;
3154 while (*s && isSPACE(*s))
3155 ++s;
3156 if (*s) {
c7030b81 3157 const char *e, *p;
0df16ed7
GS		 3158 p = s;
3159 /* ignore trailing spaces (possibly followed by other switches) */
3160 do {
3161 for (e = p; *e && !isSPACE(*e); e++) ;
3162 p = e;
3163 while (isSPACE(*p))
3164 p++;
3165 } while (*p && *p != '-');
55b4bc1c 3166 incpush(s, e-s,
e28f3139 3167 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS		 3168 s = p;
3169 if (*s == '-')
3170 s++;
79072805
LW		 3171 }
3172 else
a67e862a 3173 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3174 return s;
79072805 3175 case 'l':
3280af22 3176 PL_minus_l = TRUE;
79072805 3177 s++;
7889fe52
NIS		 3178 if (PL_ors_sv) {
3179 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3180 PL_ors_sv = NULL;
7889fe52 3181 }
79072805 3182 if (isDIGIT(*s)) {
53305cf1 3183 I32 flags = 0;
a3b680e6 3184 STRLEN numlen;
396482e1 3185 PL_ors_sv = newSVpvs("\n");
53305cf1
NC		 3186 numlen = 3 + (*s == '0');
3187 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 3188 s += numlen;
3189 }
3190 else {
8bfdd7d9 3191 if (RsPARA(PL_rs)) {
396482e1 3192 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS		 3193 }
3194 else {
8bfdd7d9 3195 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3196 }
79072805
LW		 3197 }
3198 return s;
1a30305b 3199 case 'M':
f20b2998 3200 forbid_setid('M', FALSE); /* XXX ? */
1a30305b 3201 /* FALL THROUGH */
3202 case 'm':
f20b2998 3203 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3204 if (*++s) {
c7030b81 3205 const char *start;
b64cb68c 3206 const char *end;
11343788 3207 SV *sv;
e1ec3a88 3208 const char *use = "use ";
0544e6df 3209 bool colon = FALSE;
a5f75d66 3210 /* -M-foo == 'no foo' */
d0043bd1
NC		 3211 /* Leading space on " no " is deliberate, to make both
3212 possibilities the same length. */
3213 if (*s == '-') { use = " no "; ++s; }
3214 sv = newSVpvn(use,4);
a5f75d66 3215 start = s;
1a30305b 3216 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB		 3217 while(isALNUM(*s) || *s==':') {
3218 if( *s++ == ':' ) {
3219 if( *s == ':' )
3220 s++;
3221 else
3222 colon = TRUE;
3223 }
3224 }
3225 if (s == start)
3226 Perl_croak(aTHX_ "Module name required with -%c option",
3227 option);
3228 if (colon)
3229 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3230 "contains single ':'",
63da6837 3231 (int)(s - start), start, option);
b64cb68c 3232 end = s + strlen(s);
c07a80fd 3233 if (*s != '=') {
b64cb68c 3234 sv_catpvn(sv, start, end - start);
0544e6df 3235 if (option == 'm') {
c07a80fd 3236 if (*s != '\0')
cea2e8a9 3237 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3238 sv_catpvs( sv, " ()");
c07a80fd 3239 }
3240 } else {
11343788 3241 sv_catpvn(sv, start, s-start);
b64cb68c
NC		 3242 /* Use NUL as q''-delimiter. */
3243 sv_catpvs(sv, " split(/,/,q\0");
3244 ++s;
3245 sv_catpvn(sv, s, end - s);
396482e1 3246 sv_catpvs(sv, "\0)");
c07a80fd 3247 }
b64cb68c 3248 s = end;
29a861e7 3249 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b 3250 }
3251 else
0544e6df 3252 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3253 return s;
79072805 3254 case 'n':
3280af22 3255 PL_minus_n = TRUE;
79072805
LW		 3256 s++;
3257 return s;
3258 case 'p':
3280af22 3259 PL_minus_p = TRUE;
79072805
LW		 3260 s++;
3261 return s;
3262 case 's':
f20b2998 3263 forbid_setid('s', FALSE);
3280af22 3264 PL_doswitches = TRUE;
79072805
LW		 3265 s++;
3266 return s;
6537fe72
MS		 3267 case 't':
3268 if (!PL_tainting)
22f7c9c9 3269 TOO_LATE_FOR('t');
6537fe72
MS		 3270 s++;
3271 return s;
463ee0b2 3272 case 'T':
3280af22 3273 if (!PL_tainting)
22f7c9c9 3274 TOO_LATE_FOR('T');
463ee0b2
LW		 3275 s++;
3276 return s;
79072805 3277 case 'u':
3280af22 3278 PL_do_undump = TRUE;
79072805
LW		 3279 s++;
3280 return s;
3281 case 'U':
3280af22 3282 PL_unsafe = TRUE;
79072805
LW		 3283 s++;
3284 return s;
3285 case 'v':
d7aa5382 3286 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3287 upg_version(PL_patchlevel, TRUE);
8e9464f1 3288#if !defined(DGUX)
46807d8e
YO		 3289 {
3290 SV* level= vstringify(PL_patchlevel);
3291#ifdef PERL_PATCHNUM
23d483e2
NC		 3292# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3293 SV *num = newSVpvs(PERL_PATCHNUM "*");
3294# else
3295 SV *num = newSVpvs(PERL_PATCHNUM);
3296# endif
46807d8e
YO		 3297
3298 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3299 SvREFCNT_dec(level);
3300 level= num;
3301 } else {
d0a9311f 3302 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO		 3303 SvREFCNT_dec(num);
3304 }
3305 #endif
3306 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG		 3307 "\nThis is perl " STRINGIFY(PERL_REVISION)
3308 ", version " STRINGIFY(PERL_VERSION)
3309 ", subversion " STRINGIFY(PERL_SUBVERSION)
3310 " (%"SVf") built for " ARCHNAME, level
3311 );
46807d8e
YO		 3312 SvREFCNT_dec(level);
3313 }
8e9464f1
JH		 3314#else /* DGUX */
3315/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3316 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3317 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3318 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH		 3319 PerlIO_printf(PerlIO_stdout(),
3320 Perl_form(aTHX_ " built under %s at %s %s\n",
3321 OSNAME, __DATE__, __TIME__));
3322 PerlIO_printf(PerlIO_stdout(),
3323 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3324 OSVERS));
8e9464f1 3325#endif /* !DGUX */
fb73857a 3326#if defined(LOCAL_PATCH_COUNT)
3327 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 3328 PerlIO_printf(PerlIO_stdout(),
3329 "\n(with %d registered patch%s, "
3330 "see perl -V for more detail)",
bb7a0f54 3331 LOCAL_PATCH_COUNT,
b0e47665 3332 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3333#endif
1a30305b 3334
b0e47665 3335 PerlIO_printf(PerlIO_stdout(),
010d7370 3336 "\n\nCopyright 1987-2011, Larry Wall\n");
79072805 3337#ifdef MSDOS
b0e47665
GS		 3338 PerlIO_printf(PerlIO_stdout(),
3339 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 3340#endif
3341#ifdef DJGPP
b0e47665
GS		 3342 PerlIO_printf(PerlIO_stdout(),
3343 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3344 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3345#endif
79072805 3346#ifdef OS2
b0e47665
GS		 3347 PerlIO_printf(PerlIO_stdout(),
3348 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3349 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3350#endif
79072805 3351#ifdef atarist
b0e47665
GS		 3352 PerlIO_printf(PerlIO_stdout(),
3353 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3354#endif
a3f9223b 3355#ifdef __BEOS__
b0e47665
GS		 3356 PerlIO_printf(PerlIO_stdout(),
3357 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3358#endif
1d84e8df 3359#ifdef MPE
b0e47665 3360 PerlIO_printf(PerlIO_stdout(),
e583a879 3361 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3362#endif
9d116dd7 3363#ifdef OEMVS
b0e47665
GS		 3364 PerlIO_printf(PerlIO_stdout(),
3365 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3366#endif
495c5fdc 3367#ifdef __VOS__
b0e47665 3368 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3369 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3370#endif
092bebab 3371#ifdef __OPEN_VM
b0e47665
GS		 3372 PerlIO_printf(PerlIO_stdout(),
3373 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3374#endif
a1a0e61e 3375#ifdef POSIX_BC
b0e47665
GS		 3376 PerlIO_printf(PerlIO_stdout(),
3377 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3378#endif
f83d2536 3379#ifdef EPOC
b0e47665 3380 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3381 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3382#endif
e1caacb4 3383#ifdef UNDER_CE
b475b3e6
JH		 3384 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3385 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH		 3386 wce_hitreturn();
3387#endif
a0fd4948 3388#ifdef __SYMBIAN32__
27da23d5
JH		 3389 PerlIO_printf(PerlIO_stdout(),
3390 "Symbian port by Nokia, 2004-2005\n");
3391#endif
baed7233
DL		 3392#ifdef BINARY_BUILD_NOTICE
3393 BINARY_BUILD_NOTICE;
3394#endif
b0e47665
GS		 3395 PerlIO_printf(PerlIO_stdout(),
3396 "\n\
79072805 3397Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3398GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3399Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3400this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3401Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3402 my_exit(0);
79072805 3403 case 'w':
b2e5e6ba 3404 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3405 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3406 }
599cee73
PM		 3407 s++;
3408 return s;
3409 case 'W':
ac27b0f5 3410 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3411 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3412 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3413 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 3414 s++;
3415 return s;
3416 case 'X':
ac27b0f5 3417 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3418 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3419 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3420 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 3421 s++;
3422 return s;
a0d0e21e 3423 case '*':
79072805 3424 case ' ':
d3133c89
NC		 3425 while( *s == ' ' )
3426 ++s;
3427 if (s[0] == '-') /* Additional switches on #! line. */
3428 return s+1;
79072805 3429 break;
a0d0e21e 3430 case '-':
79072805 3431 case 0:
51882d45 3432#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 3433 case '\r':
3434#endif
79072805
LW		 3435 case '\n':
3436 case '\t':
3437 break;
aa689395 3438#ifdef ALTERNATE_SHEBANG
3439 case 'S': /* OS/2 needs -S on "extproc" line. */
3440 break;
3441#endif
79072805 3442 default:
cea2e8a9 3443 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3444 }
bd61b366 3445 return NULL;
79072805
LW		 3446}
3447
3448/* compliments of Tom Christiansen */
3449
3450/* unexec() can be found in the Gnu emacs distribution */
ee580363 3451/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 3452
3453void
864dbfa3 3454Perl_my_unexec(pTHX)
79072805 3455{
b37c2d43 3456 PERL_UNUSED_CONTEXT;
79072805 3457#ifdef UNEXEC
b37c2d43
AL		 3458 SV * prog = newSVpv(BIN_EXP, 0);
3459 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3460 int status = 1;
79072805
LW		 3461 extern int etext;
3462
396482e1 3463 sv_catpvs(prog, "/perl");
396482e1 3464 sv_catpvs(file, ".perldump");
79072805 3465
ee580363
GS		 3466 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3467 /* unexec prints msg to stderr in case of failure */
6ad3d225 3468 PerlProc_exit(status);
79072805 3469#else
a5f75d66
AD		 3470# ifdef VMS
3471# include <lib$routines.h>
3472 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO		 3473# elif defined(WIN32) || defined(__CYGWIN__)
3474 Perl_croak(aTHX_ "dump is not supported");
aa689395 3475# else
79072805 3476 ABORT(); /* for use with undump */
aa689395 3477# endif
a5f75d66 3478#endif
79072805
LW		 3479}
3480
cb68f92d
GS		 3481/* initialize curinterp */
3482STATIC void
cea2e8a9 3483S_init_interp(pTHX)
cb68f92d 3484{
97aff369 3485 dVAR;
acfe0abc 3486#ifdef MULTIPLICITY
115ff745
NC		 3487# define PERLVAR(prefix,var,type)
3488# define PERLVARA(prefix,var,n,type)
acfe0abc 3489# if defined(PERL_IMPLICIT_CONTEXT)
115ff745
NC		 3490# define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3491# define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3967c732 3492# else
115ff745
NC		 3493# define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3494# define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
066ef5b5