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4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 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
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
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
2982a345
NC
41#ifdef USE_KERN_PROC_PATHNAME
42# include <sys/sysctl.h>
43#endif
44
ae60cb46
NC
45#ifdef USE_NSGETEXECUTABLEPATH
46# include <mach-o/dyld.h>
47#endif
48
2aa47728 49#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
50# ifdef I_SYSUIO
51# include <sys/uio.h>
52# endif
53
54union control_un {
55 struct cmsghdr cm;
56 char control[CMSG_SPACE(sizeof(int))];
57};
58
2aa47728
NC
59#endif
60
5311654c
JH
61#ifdef __BEOS__
62# define HZ 1000000
63#endif
64
65#ifndef HZ
66# ifdef CLK_TCK
67# define HZ CLK_TCK
68# else
69# define HZ 60
70# endif
71#endif
72
7114a2d2 73#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 74char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
75#endif
76
acfe0abc 77static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 78
cc69b689 79#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 80# define validate_suid(rsfp) NOOP
cc69b689 81#else
b24bc095 82# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 83#endif
8d063cd8 84
d6f07c05
AL
85#define CALL_BODY_SUB(myop) \
86 if (PL_op == (myop)) \
139d0ce6 87 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
88 if (PL_op) \
89 CALLRUNOPS(aTHX);
90
91#define CALL_LIST_BODY(cv) \
92 PUSHMARK(PL_stack_sp); \
9a8aa25b 93 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 94
e6827a76 95static void
daa7d858 96S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 97{
27da23d5 98 dVAR;
e6827a76
NC
99 if (!PL_curinterp) {
100 PERL_SET_INTERP(my_perl);
3db8f154 101#if defined(USE_ITHREADS)
e6827a76
NC
102 INIT_THREADS;
103 ALLOC_THREAD_KEY;
104 PERL_SET_THX(my_perl);
105 OP_REFCNT_INIT;
e8570548 106 OP_CHECK_MUTEX_INIT;
71ad1b0c 107 HINTS_REFCNT_INIT;
e6827a76 108 MUTEX_INIT(&PL_dollarzero_mutex);
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109 MUTEX_INIT(&PL_my_ctx_mutex);
110# endif
e6827a76 111 }
c0bce9aa
NC
112#if defined(USE_ITHREADS)
113 else
114#else
115 /* This always happens for non-ithreads */
116#endif
117 {
e6827a76
NC
118 PERL_SET_THX(my_perl);
119 }
120}
06d86050 121
cbec8ebe
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122
123/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
124
125void
126Perl_sys_init(int* argc, char*** argv)
127{
4fc0badb 128 dVAR;
7918f24d
NC
129
130 PERL_ARGS_ASSERT_SYS_INIT;
131
cbec8ebe
DM
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_SYS_INIT_BODY(argc, argv);
135}
136
137void
138Perl_sys_init3(int* argc, char*** argv, char*** env)
139{
4fc0badb 140 dVAR;
7918f24d
NC
141
142 PERL_ARGS_ASSERT_SYS_INIT3;
143
cbec8ebe
DM
144 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
145 PERL_UNUSED_ARG(argv);
146 PERL_UNUSED_ARG(env);
147 PERL_SYS_INIT3_BODY(argc, argv, env);
148}
149
150void
d0820ef1 151Perl_sys_term()
cbec8ebe 152{
4fc0badb 153 dVAR;
bf81751b
DM
154 if (!PL_veto_cleanup) {
155 PERL_SYS_TERM_BODY();
156 }
cbec8ebe
DM
157}
158
159
32e30700
GS
160#ifdef PERL_IMPLICIT_SYS
161PerlInterpreter *
7766f137
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162perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
163 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
164 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
165 struct IPerlDir* ipD, struct IPerlSock* ipS,
166 struct IPerlProc* ipP)
167{
168 PerlInterpreter *my_perl;
7918f24d
NC
169
170 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
171
9f653bb5 172 /* Newx() needs interpreter, so call malloc() instead */
32e30700 173 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 174 S_init_tls_and_interp(my_perl);
32e30700
GS
175 Zero(my_perl, 1, PerlInterpreter);
176 PL_Mem = ipM;
7766f137
GS
177 PL_MemShared = ipMS;
178 PL_MemParse = ipMP;
32e30700
GS
179 PL_Env = ipE;
180 PL_StdIO = ipStd;
181 PL_LIO = ipLIO;
182 PL_Dir = ipD;
183 PL_Sock = ipS;
184 PL_Proc = ipP;
7cb608b5 185 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 186
32e30700
GS
187 return my_perl;
188}
189#else
954c1994
GS
190
191/*
ccfc67b7
JH
192=head1 Embedding Functions
193
954c1994
GS
194=for apidoc perl_alloc
195
196Allocates a new Perl interpreter. See L<perlembed>.
197
198=cut
199*/
200
93a17b20 201PerlInterpreter *
cea2e8a9 202perl_alloc(void)
79072805 203{
cea2e8a9 204 PerlInterpreter *my_perl;
79072805 205
9f653bb5 206 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 207 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 208
e6827a76 209 S_init_tls_and_interp(my_perl);
7cb608b5 210#ifndef PERL_TRACK_MEMPOOL
07409e01 211 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
212#else
213 Zero(my_perl, 1, PerlInterpreter);
214 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
215 return my_perl;
216#endif
79072805 217}
32e30700 218#endif /* PERL_IMPLICIT_SYS */
79072805 219
954c1994
GS
220/*
221=for apidoc perl_construct
222
223Initializes a new Perl interpreter. See L<perlembed>.
224
225=cut
226*/
227
79072805 228void
0cb96387 229perl_construct(pTHXx)
79072805 230{
27da23d5 231 dVAR;
7918f24d
NC
232
233 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
234
8990e307 235#ifdef MULTIPLICITY
54aff467 236 init_interp();
ac27b0f5 237 PL_perl_destruct_level = 1;
54aff467 238#else
7918f24d 239 PERL_UNUSED_ARG(my_perl);
54aff467
GS
240 if (PL_perl_destruct_level > 0)
241 init_interp();
242#endif
34caed6d
DM
243 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
244
0d96b528 245 init_constants();
34caed6d
DM
246
247 SvREADONLY_on(&PL_sv_placeholder);
248 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
249
250 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 251#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 252 PL_pidstatus = newHV();
ca0c25f6 253#endif
79072805 254
396482e1 255 PL_rs = newSVpvs("\n");
dc92893f 256
cea2e8a9 257 init_stacks();
79072805 258
748a9306 259 init_ids();
a5f75d66 260
312caa8e 261 JMPENV_BOOTSTRAP;
f86702cc
PP
262 STATUS_ALL_SUCCESS;
263
0672f40e 264 init_i18nl10n(1);
36477c24 265 SET_NUMERIC_STANDARD();
0b5b802d 266
ab821d7f 267#if defined(LOCAL_PATCH_COUNT)
3280af22 268 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
269#endif
270
52853b95
GS
271#ifdef HAVE_INTERP_INTERN
272 sys_intern_init();
273#endif
274
3a1ee7e8 275 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 276
3280af22
NIS
277 PL_fdpid = newAV(); /* for remembering popen pids by fd */
278 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 279 PL_errors = newSVpvs("");
76f68e9b
MHM
280 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
281 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
282 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 283#ifdef USE_ITHREADS
402d2eb1
NC
284 /* First entry is a list of empty elements. It needs to be initialised
285 else all hell breaks loose in S_find_uninit_var(). */
286 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 287 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 288 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 289#endif
e5dd39fc 290#ifdef USE_REENTRANT_API
59bd0823 291 Perl_reentrant_init(aTHX);
e5dd39fc 292#endif
3d47000e
AB
293
294 /* Note that strtab is a rather special HV. Assumptions are made
295 about not iterating on it, and not adding tie magic to it.
296 It is properly deallocated in perl_destruct() */
297 PL_strtab = newHV();
298
3d47000e
AB
299 HvSHAREKEYS_off(PL_strtab); /* mandatory */
300 hv_ksplit(PL_strtab, 512);
301
0631ea03
AB
302#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
303 _dyld_lookup_and_bind
304 ("__environ", (unsigned long *) &environ_pointer, NULL);
305#endif /* environ */
306
2f42fcb0
JH
307#ifndef PERL_MICRO
308# ifdef USE_ENVIRON_ARRAY
0631ea03 309 PL_origenviron = environ;
2f42fcb0 310# endif
0631ea03
AB
311#endif
312
5311654c 313 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 314 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
315 * BeOS has those, but returns the wrong value.
316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
dbc1d986 318#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
321#endif
322 PL_clocktick = HZ;
323
081fc587
AB
324 PL_stashcache = newHV();
325
e8e3635e 326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 327 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 328
27da23d5
JH
329#ifdef HAS_MMAP
330 if (!PL_mmap_page_size) {
331#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
332 {
333 SETERRNO(0, SS_NORMAL);
334# ifdef _SC_PAGESIZE
335 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
336# else
337 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
338# endif
339 if ((long) PL_mmap_page_size < 0) {
340 if (errno) {
44f8325f 341 SV * const error = ERRSV;
d4c19fe8 342 SvUPGRADE(error, SVt_PV);
0510663f 343 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
344 }
345 else
346 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
347 }
348 }
349#else
350# ifdef HAS_GETPAGESIZE
351 PL_mmap_page_size = getpagesize();
352# else
353# if defined(I_SYS_PARAM) && defined(PAGESIZE)
354 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
355# endif
356# endif
357#endif
358 if (PL_mmap_page_size <= 0)
359 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
360 (IV) PL_mmap_page_size);
361 }
362#endif /* HAS_MMAP */
363
364#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
365 PL_timesbase.tms_utime = 0;
366 PL_timesbase.tms_stime = 0;
367 PL_timesbase.tms_cutime = 0;
368 PL_timesbase.tms_cstime = 0;
369#endif
370
7d113631
NC
371 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
372
a3e6e81e 373 PL_registered_mros = newHV();
9e169432
NC
374 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
375 HvMAX(PL_registered_mros) = 0;
a3e6e81e 376
8990e307 377 ENTER;
79072805
LW
378}
379
954c1994 380/*
62375a60
NIS
381=for apidoc nothreadhook
382
383Stub that provides thread hook for perl_destruct when there are
384no threads.
385
386=cut
387*/
388
389int
4e9e3734 390Perl_nothreadhook(pTHX)
62375a60 391{
96a5add6 392 PERL_UNUSED_CONTEXT;
62375a60
NIS
393 return 0;
394}
395
41e4abd8
NC
396#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
397void
398Perl_dump_sv_child(pTHX_ SV *sv)
399{
400 ssize_t got;
bf357333
NC
401 const int sock = PL_dumper_fd;
402 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
403 union control_un control;
404 struct msghdr msg;
808ad2d0 405 struct iovec vec[2];
bf357333 406 struct cmsghdr *cmptr;
808ad2d0
NC
407 int returned_errno;
408 unsigned char buffer[256];
41e4abd8 409
7918f24d
NC
410 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
411
bf357333 412 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
413 return;
414
415 PerlIO_flush(Perl_debug_log);
416
bf357333
NC
417 /* All these shenanigans are to pass a file descriptor over to our child for
418 it to dump out to. We can't let it hold open the file descriptor when it
419 forks, as the file descriptor it will dump to can turn out to be one end
420 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 421 be open, the wait would be forever.) */
bf357333
NC
422
423 msg.msg_control = control.control;
424 msg.msg_controllen = sizeof(control.control);
425 /* We're a connected socket so we don't need a destination */
426 msg.msg_name = NULL;
427 msg.msg_namelen = 0;
428 msg.msg_iov = vec;
808ad2d0 429 msg.msg_iovlen = 1;
bf357333
NC
430
431 cmptr = CMSG_FIRSTHDR(&msg);
432 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
433 cmptr->cmsg_level = SOL_SOCKET;
434 cmptr->cmsg_type = SCM_RIGHTS;
435 *((int *)CMSG_DATA(cmptr)) = 1;
436
437 vec[0].iov_base = (void*)&sv;
438 vec[0].iov_len = sizeof(sv);
439 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
440
441 if(got < 0) {
bf357333 442 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
443 abort();
444 }
bf357333
NC
445 if(got < sizeof(sv)) {
446 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
447 abort();
448 }
449
808ad2d0
NC
450 /* Return protocol is
451 int: errno value
452 unsigned char: length of location string (0 for empty)
453 unsigned char*: string (not terminated)
454 */
455 vec[0].iov_base = (void*)&returned_errno;
456 vec[0].iov_len = sizeof(returned_errno);
457 vec[1].iov_base = buffer;
458 vec[1].iov_len = 1;
459
460 got = readv(sock, vec, 2);
41e4abd8
NC
461
462 if(got < 0) {
463 perror("Debug leaking scalars parent read failed");
808ad2d0 464 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
465 abort();
466 }
808ad2d0 467 if(got < sizeof(returned_errno) + 1) {
41e4abd8 468 perror("Debug leaking scalars parent short read");
808ad2d0 469 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
470 abort();
471 }
472
808ad2d0
NC
473 if (*buffer) {
474 got = read(sock, buffer + 1, *buffer);
475 if(got < 0) {
476 perror("Debug leaking scalars parent read 2 failed");
477 PerlIO_flush(PerlIO_stderr());
478 abort();
479 }
480
481 if(got < *buffer) {
482 perror("Debug leaking scalars parent short read 2");
483 PerlIO_flush(PerlIO_stderr());
484 abort();
485 }
486 }
487
488 if (returned_errno || *buffer) {
489 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
490 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
491 returned_errno, strerror(returned_errno));
41e4abd8
NC
492 }
493}
494#endif
495
62375a60 496/*
954c1994
GS
497=for apidoc perl_destruct
498
499Shuts down a Perl interpreter. See L<perlembed>.
500
501=cut
502*/
503
31d77e54 504int
0cb96387 505perl_destruct(pTHXx)
79072805 506{
27da23d5 507 dVAR;
be2ea8ed 508 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 509 HV *hv;
2aa47728 510#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
511 pid_t child;
512#endif
8990e307 513
7918f24d
NC
514 PERL_ARGS_ASSERT_PERL_DESTRUCT;
515#ifndef MULTIPLICITY
ed6c66dd 516 PERL_UNUSED_ARG(my_perl);
7918f24d 517#endif
9d4ba2ae 518
3d22c4f0
GG
519 assert(PL_scopestack_ix == 1);
520
7766f137
GS
521 /* wait for all pseudo-forked children to finish */
522 PERL_WAIT_FOR_CHILDREN;
523
3280af22 524 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
525#ifdef DEBUGGING
526 {
9d4ba2ae
AL
527 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
528 if (s) {
e1ec3a88 529 const int i = atoi(s);
5f05dabc
PP
530 if (destruct_level < i)
531 destruct_level = i;
532 }
4633a7c4
LW
533 }
534#endif
535
27da23d5 536 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
537 dJMPENV;
538 int x = 0;
539
540 JMPENV_PUSH(x);
1b6737cc 541 PERL_UNUSED_VAR(x);
9ebf26ad 542 if (PL_endav && !PL_minus_c) {
ca7b837b 543 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 544 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 545 }
f3faeb53 546 JMPENV_POP;
26f423df 547 }
f3faeb53 548 LEAVE;
a0d0e21e 549 FREETMPS;
3d22c4f0 550 assert(PL_scopestack_ix == 0);
a0d0e21e 551
e00b64d4 552 /* Need to flush since END blocks can produce output */
f13a2bc0 553 my_fflush_all();
e00b64d4 554
16c91539 555 if (PL_threadhook(aTHX)) {
62375a60 556 /* Threads hook has vetoed further cleanup */
c301d606 557 PL_veto_cleanup = TRUE;
37038d91 558 return STATUS_EXIT;
62375a60
NIS
559 }
560
2aa47728
NC
561#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
562 if (destruct_level != 0) {
563 /* Fork here to create a child. Our child's job is to preserve the
564 state of scalars prior to destruction, so that we can instruct it
565 to dump any scalars that we later find have leaked.
566 There's no subtlety in this code - it assumes POSIX, and it doesn't
567 fail gracefully */
568 int fd[2];
569
570 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
571 perror("Debug leaking scalars socketpair failed");
572 abort();
573 }
574
575 child = fork();
576 if(child == -1) {
577 perror("Debug leaking scalars fork failed");
578 abort();
579 }
580 if (!child) {
581 /* We are the child */
3125a5a4
NC
582 const int sock = fd[1];
583 const int debug_fd = PerlIO_fileno(Perl_debug_log);
584 int f;
808ad2d0
NC
585 const char *where;
586 /* Our success message is an integer 0, and a char 0 */
b61433a9 587 static const char success[sizeof(int) + 1] = {0};
3125a5a4 588
2aa47728 589 close(fd[0]);
2aa47728 590
3125a5a4
NC
591 /* We need to close all other file descriptors otherwise we end up
592 with interesting hangs, where the parent closes its end of a
593 pipe, and sits waiting for (another) child to terminate. Only
594 that child never terminates, because it never gets EOF, because
bf357333
NC
595 we also have the far end of the pipe open. We even need to
596 close the debugging fd, because sometimes it happens to be one
597 end of a pipe, and a process is waiting on the other end for
598 EOF. Normally it would be closed at some point earlier in
599 destruction, but if we happen to cause the pipe to remain open,
600 EOF never occurs, and we get an infinite hang. Hence all the
601 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
602
603 f = sysconf(_SC_OPEN_MAX);
604 if(f < 0) {
808ad2d0
NC
605 where = "sysconf failed";
606 goto abort;
3125a5a4
NC
607 }
608 while (f--) {
609 if (f == sock)
610 continue;
3125a5a4
NC
611 close(f);
612 }
613
2aa47728
NC
614 while (1) {
615 SV *target;
bf357333
NC
616 union control_un control;
617 struct msghdr msg;
618 struct iovec vec[1];
619 struct cmsghdr *cmptr;
620 ssize_t got;
621 int got_fd;
622
623 msg.msg_control = control.control;
624 msg.msg_controllen = sizeof(control.control);
625 /* We're a connected socket so we don't need a source */
626 msg.msg_name = NULL;
627 msg.msg_namelen = 0;
628 msg.msg_iov = vec;
629 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
630
631 vec[0].iov_base = (void*)&target;
632 vec[0].iov_len = sizeof(target);
633
634 got = recvmsg(sock, &msg, 0);
2aa47728
NC
635
636 if(got == 0)
637 break;
638 if(got < 0) {
808ad2d0
NC
639 where = "recv failed";
640 goto abort;
2aa47728
NC
641 }
642 if(got < sizeof(target)) {
808ad2d0
NC
643 where = "short recv";
644 goto abort;
2aa47728 645 }
bf357333 646
808ad2d0
NC
647 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
648 where = "no cmsg";
649 goto abort;
650 }
651 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
652 where = "wrong cmsg_len";
653 goto abort;
654 }
655 if(cmptr->cmsg_level != SOL_SOCKET) {
656 where = "wrong cmsg_level";
657 goto abort;
658 }
659 if(cmptr->cmsg_type != SCM_RIGHTS) {
660 where = "wrong cmsg_type";
661 goto abort;
662 }
bf357333
NC
663
664 got_fd = *(int*)CMSG_DATA(cmptr);
665 /* For our last little bit of trickery, put the file descriptor
666 back into Perl_debug_log, as if we never actually closed it
667 */
808ad2d0
NC
668 if(got_fd != debug_fd) {
669 if (dup2(got_fd, debug_fd) == -1) {
670 where = "dup2";
671 goto abort;
672 }
673 }
2aa47728 674 sv_dump(target);
bf357333 675
2aa47728
NC
676 PerlIO_flush(Perl_debug_log);
677
808ad2d0 678 got = write(sock, &success, sizeof(success));
2aa47728
NC
679
680 if(got < 0) {
808ad2d0
NC
681 where = "write failed";
682 goto abort;
2aa47728 683 }
808ad2d0
NC
684 if(got < sizeof(success)) {
685 where = "short write";
686 goto abort;
2aa47728
NC
687 }
688 }
689 _exit(0);
808ad2d0
NC
690 abort:
691 {
692 int send_errno = errno;
693 unsigned char length = (unsigned char) strlen(where);
694 struct iovec failure[3] = {
695 {(void*)&send_errno, sizeof(send_errno)},
696 {&length, 1},
697 {(void*)where, length}
698 };
699 int got = writev(sock, failure, 3);
700 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
701 in the parent if we try to read from the socketpair after the
702 child has exited, even if there was data to read.
703 So sleep a bit to give the parent a fighting chance of
704 reading the data. */
705 sleep(2);
706 _exit((got == -1) ? errno : 0);
707 }
bf357333 708 /* End of child. */
2aa47728 709 }
41e4abd8 710 PL_dumper_fd = fd[0];
2aa47728
NC
711 close(fd[1]);
712 }
713#endif
714
ff0cee69
PP
715 /* We must account for everything. */
716
717 /* Destroy the main CV and syntax tree */
37e77c23
FC
718 /* Set PL_curcop now, because destroying ops can cause new SVs
719 to be generated in Perl_pad_swipe, and when running with
720 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
721 op from which the filename structure member is copied. */
17fbfdf6 722 PL_curcop = &PL_compiling;
3280af22 723 if (PL_main_root) {
4e380990
DM
724 /* ensure comppad/curpad to refer to main's pad */
725 if (CvPADLIST(PL_main_cv)) {
726 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
727 }
3280af22 728 op_free(PL_main_root);
5f66b61c 729 PL_main_root = NULL;
a0d0e21e 730 }
5f66b61c 731 PL_main_start = NULL;
aac9d523
DM
732 /* note that PL_main_cv isn't usually actually freed at this point,
733 * due to the CvOUTSIDE refs from subs compiled within it. It will
734 * get freed once all the subs are freed in sv_clean_all(), for
735 * destruct_level > 0 */
3280af22 736 SvREFCNT_dec(PL_main_cv);
601f1833 737 PL_main_cv = NULL;
ca7b837b 738 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 739
13621cfb
NIS
740 /* Tell PerlIO we are about to tear things apart in case
741 we have layers which are using resources that should
742 be cleaned up now.
743 */
744
745 PerlIO_destruct(aTHX);
746
3280af22 747 if (PL_sv_objcount) {
a0d0e21e
LW
748 /*
749 * Try to destruct global references. We do this first so that the
750 * destructors and destructees still exist. Some sv's might remain.
751 * Non-referenced objects are on their own.
752 */
a0d0e21e 753 sv_clean_objs();
bf9cdc68 754 PL_sv_objcount = 0;
8990e307
LW
755 }
756
5cd24f17 757 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 758 SvREFCNT_dec(PL_warnhook);
a0714e2c 759 PL_warnhook = NULL;
3280af22 760 SvREFCNT_dec(PL_diehook);
a0714e2c 761 PL_diehook = NULL;
5cd24f17 762
4b556e6c 763 /* call exit list functions */
3280af22 764 while (PL_exitlistlen-- > 0)
acfe0abc 765 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 766
3280af22 767 Safefree(PL_exitlist);
4b556e6c 768
1c4916e5
CB
769 PL_exitlist = NULL;
770 PL_exitlistlen = 0;
771
a3e6e81e
NC
772 SvREFCNT_dec(PL_registered_mros);
773
551a8b83 774 /* jettison our possibly duplicated environment */
4b647fb0
DM
775 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
776 * so we certainly shouldn't free it here
777 */
2f42fcb0 778#ifndef PERL_MICRO
4b647fb0 779#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 780 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
781#ifdef USE_ITHREADS
782 /* only main thread can free environ[0] contents */
783 && PL_curinterp == aTHX
784#endif
785 )
786 {
551a8b83
JH
787 I32 i;
788
789 for (i = 0; environ[i]; i++)
4b420006 790 safesysfree(environ[i]);
0631ea03 791
4b420006
JH
792 /* Must use safesysfree() when working with environ. */
793 safesysfree(environ);
551a8b83
JH
794
795 environ = PL_origenviron;
796 }
797#endif
2f42fcb0 798#endif /* !PERL_MICRO */
551a8b83 799
30985c42
JH
800 if (destruct_level == 0) {
801
802 DEBUG_P(debprofdump());
803
804#if defined(PERLIO_LAYERS)
805 /* No more IO - including error messages ! */
806 PerlIO_cleanup(aTHX);
807#endif
808
809 CopFILE_free(&PL_compiling);
30985c42
JH
810
811 /* The exit() function will do everything that needs doing. */
812 return STATUS_EXIT;
813 }
814
5f8cb046
DM
815#ifdef USE_ITHREADS
816 /* the syntax tree is shared between clones
817 * so op_free(PL_main_root) only ReREFCNT_dec's
818 * REGEXPs in the parent interpreter
819 * we need to manually ReREFCNT_dec for the clones
820 */
0547a729
DM
821 {
822 I32 i = AvFILLp(PL_regex_padav);
823 SV **ary = AvARRAY(PL_regex_padav);
824
825 for (; i; i--) {
826 SvREFCNT_dec(ary[i]);
827 ary[i] = &PL_sv_undef;
828 }
829 }
d4d03940 830 Safefree(PL_stashpad);
5f8cb046
DM
831#endif
832
0547a729 833
ad64d0ec 834 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
835 PL_stashcache = NULL;
836
5f05dabc
PP
837 /* loosen bonds of global variables */
838
2f9285f8
DM
839 /* XXX can PL_parser still be non-null here? */
840 if(PL_parser && PL_parser->rsfp) {
841 (void)PerlIO_close(PL_parser->rsfp);
842 PL_parser->rsfp = NULL;
8ebc5c01
PP
843 }
844
84386e14
RGS
845 if (PL_minus_F) {
846 Safefree(PL_splitstr);
847 PL_splitstr = NULL;
848 }
849
8ebc5c01 850 /* switches */
3280af22
NIS
851 PL_minus_n = FALSE;
852 PL_minus_p = FALSE;
853 PL_minus_l = FALSE;
854 PL_minus_a = FALSE;
855 PL_minus_F = FALSE;
856 PL_doswitches = FALSE;
599cee73 857 PL_dowarn = G_WARN_OFF;
3280af22 858 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
859 PL_unsafe = FALSE;
860
861 Safefree(PL_inplace);
bd61b366 862 PL_inplace = NULL;
a7cb1f99 863 SvREFCNT_dec(PL_patchlevel);
1e8125c6 864 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
865
866 if (PL_e_script) {
867 SvREFCNT_dec(PL_e_script);
a0714e2c 868 PL_e_script = NULL;
8ebc5c01
PP
869 }
870
bf9cdc68
RG
871 PL_perldb = 0;
872
8ebc5c01
PP
873 /* magical thingies */
874
e23d9e2f
CS
875 SvREFCNT_dec(PL_ofsgv); /* *, */
876 PL_ofsgv = NULL;
5f05dabc 877
7889fe52 878 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 879 PL_ors_sv = NULL;
8ebc5c01 880
3280af22 881 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 882 PL_rs = NULL;
dc92893f 883
d33b2eba 884 Safefree(PL_osname); /* $^O */
bd61b366 885 PL_osname = NULL;
5f05dabc 886
3280af22 887 SvREFCNT_dec(PL_statname);
a0714e2c
SS
888 PL_statname = NULL;
889 PL_statgv = NULL;
5f05dabc 890
8ebc5c01
PP
891 /* defgv, aka *_ should be taken care of elsewhere */
892
7d5ea4e7
GS
893 /* float buffer */
894 Safefree(PL_efloatbuf);
bd61b366 895 PL_efloatbuf = NULL;
7d5ea4e7
GS
896 PL_efloatsize = 0;
897
8ebc5c01 898 /* startup and shutdown function lists */
3280af22 899 SvREFCNT_dec(PL_beginav);
5a837c8f 900 SvREFCNT_dec(PL_beginav_save);
3280af22 901 SvREFCNT_dec(PL_endav);
7d30b5c4 902 SvREFCNT_dec(PL_checkav);
ece599bd 903 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
904 SvREFCNT_dec(PL_unitcheckav);
905 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 906 SvREFCNT_dec(PL_initav);
7d49f689
NC
907 PL_beginav = NULL;
908 PL_beginav_save = NULL;
909 PL_endav = NULL;
910 PL_checkav = NULL;
911 PL_checkav_save = NULL;
3c10abe3
AG
912 PL_unitcheckav = NULL;
913 PL_unitcheckav_save = NULL;
7d49f689 914 PL_initav = NULL;
5618dfe8 915
8ebc5c01 916 /* shortcuts just get cleared */
a0714e2c
SS
917 PL_envgv = NULL;
918 PL_incgv = NULL;
919 PL_hintgv = NULL;
920 PL_errgv = NULL;
921 PL_argvgv = NULL;
922 PL_argvoutgv = NULL;
923 PL_stdingv = NULL;
924 PL_stderrgv = NULL;
925 PL_last_in_gv = NULL;
926 PL_replgv = NULL;
927 PL_DBgv = NULL;
928 PL_DBline = NULL;
929 PL_DBsub = NULL;
930 PL_DBsingle = NULL;
931 PL_DBtrace = NULL;
932 PL_DBsignal = NULL;
601f1833 933 PL_DBcv = NULL;
7d49f689 934 PL_dbargs = NULL;
5c284bb0 935 PL_debstash = NULL;
8ebc5c01 936
7a1c5554 937 SvREFCNT_dec(PL_argvout_stack);
7d49f689 938 PL_argvout_stack = NULL;
8ebc5c01 939
5c831c24 940 SvREFCNT_dec(PL_modglobal);
5c284bb0 941 PL_modglobal = NULL;
5c831c24 942 SvREFCNT_dec(PL_preambleav);
7d49f689 943 PL_preambleav = NULL;
5c831c24 944 SvREFCNT_dec(PL_subname);
a0714e2c 945 PL_subname = NULL;
ca0c25f6 946#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 947 SvREFCNT_dec(PL_pidstatus);
5c284bb0 948 PL_pidstatus = NULL;
ca0c25f6 949#endif
5c831c24 950 SvREFCNT_dec(PL_toptarget);
a0714e2c 951 PL_toptarget = NULL;
5c831c24 952 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
953 PL_bodytarget = NULL;
954 PL_formtarget = NULL;
5c831c24 955
d33b2eba 956 /* free locale stuff */
b9582b6a 957#ifdef USE_LOCALE_COLLATE
d33b2eba 958 Safefree(PL_collation_name);
bd61b366 959 PL_collation_name = NULL;
b9582b6a 960#endif
d33b2eba 961
b9582b6a 962#ifdef USE_LOCALE_NUMERIC
d33b2eba 963 Safefree(PL_numeric_name);
bd61b366 964 PL_numeric_name = NULL;
a453c169 965 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 966 PL_numeric_radix_sv = NULL;
b9582b6a 967#endif
d33b2eba 968
5c831c24
GS
969 /* clear utf8 character classes */
970 SvREFCNT_dec(PL_utf8_alnum);
5c831c24 971 SvREFCNT_dec(PL_utf8_alpha);
bdd8600f 972 SvREFCNT_dec(PL_utf8_blank);
5c831c24 973 SvREFCNT_dec(PL_utf8_space);
5c831c24
GS
974 SvREFCNT_dec(PL_utf8_graph);
975 SvREFCNT_dec(PL_utf8_digit);
976 SvREFCNT_dec(PL_utf8_upper);
977 SvREFCNT_dec(PL_utf8_lower);
978 SvREFCNT_dec(PL_utf8_print);
979 SvREFCNT_dec(PL_utf8_punct);
980 SvREFCNT_dec(PL_utf8_xdigit);
981 SvREFCNT_dec(PL_utf8_mark);
982 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 983 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 984 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 985 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
986 SvREFCNT_dec(PL_utf8_idstart);
987 SvREFCNT_dec(PL_utf8_idcont);
2726813d 988 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 989 PL_utf8_alnum = NULL;
a0714e2c 990 PL_utf8_alpha = NULL;
bdd8600f 991 PL_utf8_blank = NULL;
a0714e2c 992 PL_utf8_space = NULL;
a0714e2c
SS
993 PL_utf8_graph = NULL;
994 PL_utf8_digit = NULL;
995 PL_utf8_upper = NULL;
996 PL_utf8_lower = NULL;
997 PL_utf8_print = NULL;
998 PL_utf8_punct = NULL;
999 PL_utf8_xdigit = NULL;
1000 PL_utf8_mark = NULL;
1001 PL_utf8_toupper = NULL;
1002 PL_utf8_totitle = NULL;
1003 PL_utf8_tolower = NULL;
1004 PL_utf8_tofold = NULL;
1005 PL_utf8_idstart = NULL;
1006 PL_utf8_idcont = NULL;
2726813d 1007 PL_utf8_foldclosures = NULL;
5c831c24 1008
971a9dd3 1009 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1010 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1011 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1012 cophh_free(CopHINTHASH_get(&PL_compiling));
1013 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1014 CopFILE_free(&PL_compiling);
5c831c24 1015
a0d0e21e 1016 /* Prepare to destruct main symbol table. */
5f05dabc 1017
3280af22 1018 hv = PL_defstash;
ca556bcd
DM
1019 /* break ref loop *:: <=> %:: */
1020 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1021 PL_defstash = 0;
a0d0e21e 1022 SvREFCNT_dec(hv);
5c831c24 1023 SvREFCNT_dec(PL_curstname);
a0714e2c 1024 PL_curstname = NULL;
a0d0e21e 1025
5a844595
GS
1026 /* clear queued errors */
1027 SvREFCNT_dec(PL_errors);
a0714e2c 1028 PL_errors = NULL;
5a844595 1029
dd69841b
BB
1030 SvREFCNT_dec(PL_isarev);
1031
a0d0e21e 1032 FREETMPS;
9b387841 1033 if (destruct_level >= 2) {
3280af22 1034 if (PL_scopestack_ix != 0)
9b387841
NC
1035 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1036 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1037 (long)PL_scopestack_ix);
3280af22 1038 if (PL_savestack_ix != 0)
9b387841
NC
1039 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1040 "Unbalanced saves: %ld more saves than restores\n",
1041 (long)PL_savestack_ix);
3280af22 1042 if (PL_tmps_floor != -1)
9b387841
NC
1043 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1044 (long)PL_tmps_floor + 1);
a0d0e21e 1045 if (cxstack_ix != -1)
9b387841
NC
1046 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1047 (long)cxstack_ix + 1);
a0d0e21e 1048 }
8990e307 1049
0547a729
DM
1050#ifdef USE_ITHREADS
1051 SvREFCNT_dec(PL_regex_padav);
1052 PL_regex_padav = NULL;
1053 PL_regex_pad = NULL;
1054#endif
1055
776df701 1056#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1057 /* the entries in this list are allocated via SV PVX's, so get freed
1058 * in sv_clean_all */
1059 Safefree(PL_my_cxt_list);
776df701 1060#endif
57bb2458 1061
8990e307 1062 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1063
1064 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1065 while (sv_clean_all() > 2)
5226ed68
JH
1066 ;
1067
d4777f27
GS
1068 AvREAL_off(PL_fdpid); /* no surviving entries */
1069 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1070 PL_fdpid = NULL;
d33b2eba 1071
6c644e78
GS
1072#ifdef HAVE_INTERP_INTERN
1073 sys_intern_clear();
1074#endif
1075
6e72f9df
PP
1076 /* Destruct the global string table. */
1077 {
1078 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1079 * so that sv_free() won't fail on them.
80459961
NC
1080 * Now that the global string table is using a single hunk of memory
1081 * for both HE and HEK, we either need to explicitly unshare it the
1082 * correct way, or actually free things here.
6e72f9df 1083 */
80459961
NC
1084 I32 riter = 0;
1085 const I32 max = HvMAX(PL_strtab);
c4420975 1086 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1087 HE *hent = array[0];
1088
6e72f9df 1089 for (;;) {
0453d815 1090 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1091 HE * const next = HeNEXT(hent);
9014280d 1092 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1093 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1094 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1095 Safefree(hent);
1096 hent = next;
6e72f9df
PP
1097 }
1098 if (!hent) {
1099 if (++riter > max)
1100 break;
1101 hent = array[riter];
1102 }
1103 }
80459961
NC
1104
1105 Safefree(array);
1106 HvARRAY(PL_strtab) = 0;
1107 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1108 }
3280af22 1109 SvREFCNT_dec(PL_strtab);
6e72f9df 1110
e652bb2f 1111#ifdef USE_ITHREADS
c21d1a0f 1112 /* free the pointer tables used for cloning */
a0739874 1113 ptr_table_free(PL_ptr_table);
bf9cdc68 1114 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1115#endif
a0739874 1116
d33b2eba
GS
1117 /* free special SVs */
1118
1119 SvREFCNT(&PL_sv_yes) = 0;
1120 sv_clear(&PL_sv_yes);
1121 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1122 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1123
1124 SvREFCNT(&PL_sv_no) = 0;
1125 sv_clear(&PL_sv_no);
1126 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1127 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1128
9f375a43
DM
1129 {
1130 int i;
1131 for (i=0; i<=2; i++) {
1132 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1133 sv_clear(PERL_DEBUG_PAD(i));
1134 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1135 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1136 }
1137 }
1138
0453d815 1139 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1140 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1141
eba0f806
DM
1142#ifdef DEBUG_LEAKING_SCALARS
1143 if (PL_sv_count != 0) {
1144 SV* sva;
1145 SV* sv;
1146 register SV* svend;
1147
ad64d0ec 1148 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1149 svend = &sva[SvREFCNT(sva)];
1150 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1151 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1152 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1153 " flags=0x%"UVxf
fd0854ff 1154 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1155 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1156 "serial %"UVuf"\n",
574b8821
NC
1157 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1158 pTHX__VALUE,
fd0854ff
DM
1159 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1160 sv->sv_debug_line,
1161 sv->sv_debug_inpad ? "for" : "by",
1162 sv->sv_debug_optype ?
1163 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1164 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1165 sv->sv_debug_serial
fd0854ff 1166 );
2aa47728 1167#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1168 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1169#endif
eba0f806
DM
1170 }
1171 }
1172 }
1173 }
2aa47728
NC
1174#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1175 {
1176 int status;
1177 fd_set rset;
1178 /* Wait for up to 4 seconds for child to terminate.
1179 This seems to be the least effort way of timing out on reaping
1180 its exit status. */
1181 struct timeval waitfor = {4, 0};
41e4abd8 1182 int sock = PL_dumper_fd;
2aa47728
NC
1183
1184 shutdown(sock, 1);
1185 FD_ZERO(&rset);
1186 FD_SET(sock, &rset);
1187 select(sock + 1, &rset, NULL, NULL, &waitfor);
1188 waitpid(child, &status, WNOHANG);
1189 close(sock);
1190 }
1191#endif
eba0f806 1192#endif
77abb4c6
NC
1193#ifdef DEBUG_LEAKING_SCALARS_ABORT
1194 if (PL_sv_count)
1195 abort();
1196#endif
bf9cdc68 1197 PL_sv_count = 0;
eba0f806 1198
56a2bab7 1199#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1200 /* No more IO - including error messages ! */
1201 PerlIO_cleanup(aTHX);
1202#endif
1203
9f4bd222 1204 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1205 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1206 for no arg - and will try and SvREFCNT_dec it.
1207 */
1208 SvREFCNT(&PL_sv_undef) = 0;
1209 SvREADONLY_off(&PL_sv_undef);
1210
3280af22 1211 Safefree(PL_origfilename);
bd61b366 1212 PL_origfilename = NULL;
43c5f42d 1213 Safefree(PL_reg_curpm);
82ba1be6 1214 Safefree(PL_reg_poscache);
dd28f7bb 1215 free_tied_hv_pool();
3280af22 1216 Safefree(PL_op_mask);
cf36064f 1217 Safefree(PL_psig_name);
bf9cdc68 1218 PL_psig_name = (SV**)NULL;
d525a7b2 1219 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1220 {
1221 /* We need to NULL PL_psig_pend first, so that
1222 signal handlers know not to use it */
1223 int *psig_save = PL_psig_pend;
1224 PL_psig_pend = (int*)NULL;
1225 Safefree(psig_save);
1226 }
a0714e2c 1227 PL_formfeed = NULL;
6e72f9df 1228 nuke_stacks();
bf9cdc68
RG
1229 PL_tainting = FALSE;
1230 PL_taint_warn = FALSE;
3280af22 1231 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1232 PL_debug = 0;
ac27b0f5 1233
a0d0e21e 1234 DEBUG_P(debprofdump());
d33b2eba 1235
e5dd39fc 1236#ifdef USE_REENTRANT_API
10bc17b6 1237 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1238#endif
1239
612f20c3
GS
1240 sv_free_arenas();
1241
5d9a96ca
DM
1242 while (PL_regmatch_slab) {
1243 regmatch_slab *s = PL_regmatch_slab;
1244 PL_regmatch_slab = PL_regmatch_slab->next;
1245 Safefree(s);
1246 }
1247
fc36a67e
PP
1248 /* As the absolutely last thing, free the non-arena SV for mess() */
1249
3280af22 1250 if (PL_mess_sv) {
f350b448
NC
1251 /* we know that type == SVt_PVMG */
1252
9c63abab 1253 /* it could have accumulated taint magic */
f350b448
NC
1254 MAGIC* mg;
1255 MAGIC* moremagic;
1256 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1257 moremagic = mg->mg_moremagic;
1258 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1259 && mg->mg_len >= 0)
1260 Safefree(mg->mg_ptr);
1261 Safefree(mg);
9c63abab 1262 }
f350b448 1263
fc36a67e 1264 /* we know that type >= SVt_PV */
8bd4d4c5 1265 SvPV_free(PL_mess_sv);
3280af22
NIS
1266 Safefree(SvANY(PL_mess_sv));
1267 Safefree(PL_mess_sv);
a0714e2c 1268 PL_mess_sv = NULL;
fc36a67e 1269 }
37038d91 1270 return STATUS_EXIT;
79072805
LW
1271}
1272
954c1994
GS
1273/*
1274=for apidoc perl_free
1275
1276Releases a Perl interpreter. See L<perlembed>.
1277
1278=cut
1279*/
1280
79072805 1281void
0cb96387 1282perl_free(pTHXx)
79072805 1283{
5174512c
NC
1284 dVAR;
1285
7918f24d
NC
1286 PERL_ARGS_ASSERT_PERL_FREE;
1287
c301d606
DM
1288 if (PL_veto_cleanup)
1289 return;
1290
7cb608b5 1291#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1292 {
1293 /*
1294 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1295 * value as we're probably hunting memory leaks then
1296 */
1297 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1298 if (!s || atoi(s) == 0) {
4fd0a9b8 1299 const U32 old_debug = PL_debug;
55ef9aae
MHM
1300 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1301 thread at thread exit. */
4fd0a9b8
NC
1302 if (DEBUG_m_TEST) {
1303 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1304 "free this thread's memory\n");
1305 PL_debug &= ~ DEBUG_m_FLAG;
1306 }
55ef9aae
MHM
1307 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1308 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1309 PL_debug = old_debug;
55ef9aae
MHM
1310 }
1311 }
7cb608b5
NC
1312#endif
1313
acfe0abc 1314#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1315# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1316 {
acfe0abc 1317# ifdef NETWARE
7af12a34 1318 void *host = nw_internal_host;
acfe0abc 1319# else
7af12a34 1320 void *host = w32_internal_host;
acfe0abc 1321# endif
7af12a34 1322 PerlMem_free(aTHXx);
acfe0abc 1323# ifdef NETWARE
7af12a34 1324 nw_delete_internal_host(host);
acfe0abc 1325# else
7af12a34 1326 win32_delete_internal_host(host);
acfe0abc 1327# endif
7af12a34 1328 }
1c0ca838
GS
1329# else
1330 PerlMem_free(aTHXx);
1331# endif
acfe0abc
GS
1332#else
1333 PerlMem_free(aTHXx);
76e3520e 1334#endif
79072805
LW
1335}
1336
b7f7fff6 1337#if defined(USE_ITHREADS)
aebd1ac7
GA
1338/* provide destructors to clean up the thread key when libperl is unloaded */
1339#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1340
826955bd 1341#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1342#pragma fini "perl_fini"
666ad1ec
GA
1343#elif defined(__sun) && !defined(__GNUC__)
1344#pragma fini (perl_fini)
aebd1ac7
GA
1345#endif
1346
0dbb1585
AL
1347static void
1348#if defined(__GNUC__)
1349__attribute__((destructor))
aebd1ac7 1350#endif
de009b76 1351perl_fini(void)
aebd1ac7 1352{
27da23d5 1353 dVAR;
c301d606 1354 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1355 FREE_THREAD_KEY;
1356}
1357
1358#endif /* WIN32 */
1359#endif /* THREADS */
1360
4b556e6c 1361void
864dbfa3 1362Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1363{
97aff369 1364 dVAR;
3280af22
NIS
1365 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1366 PL_exitlist[PL_exitlistlen].fn = fn;
1367 PL_exitlist[PL_exitlistlen].ptr = ptr;
1368 ++PL_exitlistlen;
4b556e6c
JD
1369}
1370
b7975bdd
NC
1371STATIC void
1372S_set_caret_X(pTHX) {
97aff369 1373 dVAR;
fafc274c 1374 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1375 if (tmpgv) {
0f1723e1 1376 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1377#if defined(OS2)
1378 sv_setpv(caret_x, os2_execname(aTHX));
1379#else
2982a345
NC
1380# ifdef USE_KERN_PROC_PATHNAME
1381 size_t size = 0;
1382 int mib[4];
1383 mib[0] = CTL_KERN;
1384 mib[1] = KERN_PROC;
1385 mib[2] = KERN_PROC_PATHNAME;
1386 mib[3] = -1;
1387
1388 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1389 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1390 sv_grow(caret_x, size);
1391
1392 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1393 && size > 2) {
1394 SvPOK_only(caret_x);
1395 SvCUR_set(caret_x, size - 1);
1396 SvTAINT(caret_x);
1397 return;
1398 }
1399 }
ae60cb46
NC
1400# elif defined(USE_NSGETEXECUTABLEPATH)
1401 char buf[1];
1402 uint32_t size = sizeof(buf);
ae60cb46
NC
1403
1404 _NSGetExecutablePath(buf, &size);
1405 if (size < MAXPATHLEN * MAXPATHLEN) {
1406 sv_grow(caret_x, size);
1407 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1408 char *const tidied = realpath(SvPVX(caret_x), NULL);
1409 if (tidied) {
1410 sv_setpv(caret_x, tidied);
1411 free(tidied);
1412 } else {
1413 SvPOK_only(caret_x);
1414 SvCUR_set(caret_x, size);
1415 }
1416 return;
1417 }
1418 }
2982a345 1419# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1420 char buf[MAXPATHLEN];
1421 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1422
1423 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1424 includes a spurious NUL which will cause $^X to fail in system
1425 or backticks (this will prevent extensions from being built and
1426 many tests from working). readlink is not meant to add a NUL.
1427 Normal readlink works fine.
1428 */
1429 if (len > 0 && buf[len-1] == '\0') {
1430 len--;
1431 }
1432
1433 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1434 returning the text "unknown" from the readlink rather than the path
1435 to the executable (or returning an error from the readlink). Any
1436 valid path has a '/' in it somewhere, so use that to validate the
1437 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1438 */
1439 if (len > 0 && memchr(buf, '/', len)) {
1440 sv_setpvn(caret_x, buf, len);
82552a95 1441 return;
700dd4f8 1442 }
82552a95
NC
1443# endif
1444 /* Fallback to this: */
0f1723e1 1445 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1446#endif
b7975bdd
NC
1447 }
1448}
1449
954c1994
GS
1450/*
1451=for apidoc perl_parse
1452
1453Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1454
1455=cut
1456*/
1457
03d9f026
FC
1458#define SET_CURSTASH(newstash) \
1459 if (PL_curstash != newstash) { \
1460 SvREFCNT_dec(PL_curstash); \
1461 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1462 }
1463
79072805 1464int
0cb96387 1465perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1466{
27da23d5 1467 dVAR;
6224f72b 1468 I32 oldscope;
6224f72b 1469 int ret;
db36c5a1 1470 dJMPENV;
8d063cd8 1471
7918f24d
NC
1472 PERL_ARGS_ASSERT_PERL_PARSE;
1473#ifndef MULTIPLICITY
ed6c66dd 1474 PERL_UNUSED_ARG(my_perl);
7918f24d 1475#endif
9d4ba2ae 1476
b0891165
JH
1477#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1478 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1479 * This MUST be done before any hash stores or fetches take place.
486ec47a 1480 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1481 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1482 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1483 if (!PL_rehash_seed_set)
1484 PL_rehash_seed = get_hash_seed();
b0891165 1485 {
9d4ba2ae 1486 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1487
1b6737cc
AL
1488 if (s && (atoi(s) == 1))
1489 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1490 }
1491#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1492
3280af22 1493 PL_origargc = argc;
e2975953 1494 PL_origargv = argv;
a0d0e21e 1495
a2722ac9
GA
1496 if (PL_origalen != 0) {
1497 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1498 }
1499 else {
3cb9023d
JH
1500 /* Set PL_origalen be the sum of the contiguous argv[]
1501 * elements plus the size of the env in case that it is
e9137a8e 1502 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1503 * as the maximum modifiable length of $0. In the worst case
1504 * the area we are able to modify is limited to the size of
43c32782 1505 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1506 * --jhi */
e1ec3a88 1507 const char *s = NULL;
54bfe034 1508 int i;
1b6737cc 1509 const UV mask =
7d8e7db3 1510 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1511 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1512 const UV aligned =
43c32782
JH
1513 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1514
1515 /* See if all the arguments are contiguous in memory. Note
1516 * that 'contiguous' is a loose term because some platforms
1517 * align the argv[] and the envp[]. If the arguments look
1518 * like non-aligned, assume that they are 'strictly' or
1519 * 'traditionally' contiguous. If the arguments look like
1520 * aligned, we just check that they are within aligned
1521 * PTRSIZE bytes. As long as no system has something bizarre
1522 * like the argv[] interleaved with some other data, we are
1523 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1524 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1525 while (*s) s++;
1526 for (i = 1; i < PL_origargc; i++) {
1527 if ((PL_origargv[i] == s + 1
43c32782 1528#ifdef OS2
c8941eeb 1529 || PL_origargv[i] == s + 2
43c32782 1530#endif
c8941eeb
JH
1531 )
1532 ||
1533 (aligned &&
1534 (PL_origargv[i] > s &&
1535 PL_origargv[i] <=
1536 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1537 )
1538 {
1539 s = PL_origargv[i];
1540 while (*s) s++;
1541 }
1542 else
1543 break;
54bfe034 1544 }
54bfe034 1545 }
a4a109c2
JD
1546
1547#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1548 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1549 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1550 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1551 ||
1552 (aligned &&
1553 (PL_origenviron[0] > s &&
1554 PL_origenviron[0] <=
1555 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1556 )
1557 {
9d419b5f 1558#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1559 s = PL_origenviron[0];
1560 while (*s) s++;
1561#endif
bd61b366 1562 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1563 /* Force copy of environment. */
1564 for (i = 1; PL_origenviron[i]; i++) {
1565 if (PL_origenviron[i] == s + 1
1566 ||
1567 (aligned &&
1568 (PL_origenviron[i] > s &&
1569 PL_origenviron[i] <=
1570 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1571 )
1572 {
1573 s = PL_origenviron[i];
1574 while (*s) s++;
1575 }
1576 else
1577 break;
54bfe034 1578 }
43c32782 1579 }
54bfe034 1580 }
a4a109c2
JD
1581#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1582
2d2af554 1583 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1584 }
1585
3280af22 1586 if (PL_do_undump) {
a0d0e21e
LW
1587
1588 /* Come here if running an undumped a.out. */
1589
3280af22
NIS
1590 PL_origfilename = savepv(argv[0]);
1591 PL_do_undump = FALSE;
a0d0e21e 1592 cxstack_ix = -1; /* start label stack again */
748a9306 1593 init_ids();
b7975bdd
NC
1594 assert (!PL_tainted);
1595 TAINT;
1596 S_set_caret_X(aTHX);
1597 TAINT_NOT;
a0d0e21e
LW
1598 init_postdump_symbols(argc,argv,env);
1599 return 0;
1600 }
1601
3280af22 1602 if (PL_main_root) {
3280af22 1603 op_free(PL_main_root);
5f66b61c 1604 PL_main_root = NULL;
ff0cee69 1605 }
5f66b61c 1606 PL_main_start = NULL;
3280af22 1607 SvREFCNT_dec(PL_main_cv);
601f1833 1608 PL_main_cv = NULL;
79072805 1609
3280af22
NIS
1610 time(&PL_basetime);
1611 oldscope = PL_scopestack_ix;
599cee73 1612 PL_dowarn = G_WARN_OFF;
f86702cc 1613
14dd3ad8 1614 JMPENV_PUSH(ret);
6224f72b 1615 switch (ret) {
312caa8e 1616 case 0:
14dd3ad8 1617 parse_body(env,xsinit);
9ebf26ad 1618 if (PL_unitcheckav) {
3c10abe3 1619 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1620 }
1621 if (PL_checkav) {
ca7b837b 1622 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1623 call_list(oldscope, PL_checkav);
9ebf26ad 1624 }
14dd3ad8
GS
1625 ret = 0;
1626 break;
6224f72b
GS
1627 case 1:
1628 STATUS_ALL_FAILURE;
1629 /* FALL THROUGH */
1630 case 2:
1631 /* my_exit() was called */
3280af22 1632 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1633 LEAVE;
1634 FREETMPS;
03d9f026 1635 SET_CURSTASH(PL_defstash);
9ebf26ad 1636 if (PL_unitcheckav) {
3c10abe3 1637 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1638 }
1639 if (PL_checkav) {
ca7b837b 1640 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1641 call_list(oldscope, PL_checkav);
9ebf26ad 1642 }
37038d91 1643 ret = STATUS_EXIT;
14dd3ad8 1644 break;
6224f72b 1645 case 3:
bf49b057 1646 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1647 ret = 1;
1648 break;
6224f72b 1649 }
14dd3ad8
GS
1650 JMPENV_POP;
1651 return ret;
1652}
1653
4a5df386
NC
1654/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1655 miniperl, and we need to see those flags reflected in the values here. */
1656
1657/* What this returns is subject to change. Use the public interface in Config.
1658 */
1659static void
1660S_Internals_V(pTHX_ CV *cv)
1661{
1662 dXSARGS;
1663#ifdef LOCAL_PATCH_COUNT
1664 const int local_patch_count = LOCAL_PATCH_COUNT;
1665#else
1666 const int local_patch_count = 0;
1667#endif
2dc296d2 1668 const int entries = 3 + local_patch_count;
4a5df386
NC
1669 int i;
1670 static char non_bincompat_options[] =
1671# ifdef DEBUGGING
1672 " DEBUGGING"
1673# endif
1674# ifdef NO_MATHOMS
0d311fbe 1675 " NO_MATHOMS"
4a5df386
NC
1676# endif
1677# ifdef PERL_DISABLE_PMC
1678 " PERL_DISABLE_PMC"
1679# endif
1680# ifdef PERL_DONT_CREATE_GVSV
1681 " PERL_DONT_CREATE_GVSV"
1682# endif
9a044a43
NC
1683# ifdef PERL_EXTERNAL_GLOB
1684 " PERL_EXTERNAL_GLOB"
1685# endif
4a5df386
NC
1686# ifdef PERL_IS_MINIPERL
1687 " PERL_IS_MINIPERL"
1688# endif
1689# ifdef PERL_MALLOC_WRAP
1690 " PERL_MALLOC_WRAP"
1691# endif
1692# ifdef PERL_MEM_LOG
1693 " PERL_MEM_LOG"
1694# endif
1695# ifdef PERL_MEM_LOG_NOIMPL
1696 " PERL_MEM_LOG_NOIMPL"
1697# endif
c3cf41ec
NC
1698# ifdef PERL_PRESERVE_IVUV
1699 " PERL_PRESERVE_IVUV"
1700# endif
c051e30b
NC
1701# ifdef PERL_RELOCATABLE_INCPUSH
1702 " PERL_RELOCATABLE_INCPUSH"
1703# endif
4a5df386
NC
1704# ifdef PERL_USE_DEVEL
1705 " PERL_USE_DEVEL"
1706# endif
1707# ifdef PERL_USE_SAFE_PUTENV
1708 " PERL_USE_SAFE_PUTENV"
1709# endif
a3749cf3
NC
1710# ifdef UNLINK_ALL_VERSIONS
1711 " UNLINK_ALL_VERSIONS"
1712# endif
de618ee4
NC
1713# ifdef USE_ATTRIBUTES_FOR_PERLIO
1714 " USE_ATTRIBUTES_FOR_PERLIO"
1715# endif
4a5df386
NC
1716# ifdef USE_FAST_STDIO
1717 " USE_FAST_STDIO"
1718# endif
98548bdf
NC
1719# ifdef USE_LOCALE
1720 " USE_LOCALE"
1721# endif
98548bdf
NC
1722# ifdef USE_LOCALE_CTYPE
1723 " USE_LOCALE_CTYPE"
1724# endif
5a8d8935
NC
1725# ifdef USE_PERL_ATOF
1726 " USE_PERL_ATOF"
1727# endif
0d311fbe
NC
1728# ifdef USE_SITECUSTOMIZE
1729 " USE_SITECUSTOMIZE"
1730# endif
4a5df386
NC
1731 ;
1732 PERL_UNUSED_ARG(cv);
1733 PERL_UNUSED_ARG(items);
1734
1735 EXTEND(SP, entries);
1736
1737 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1738 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1739 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1740
1741#ifdef __DATE__
1742# ifdef __TIME__
1743 PUSHs(Perl_newSVpvn_flags(aTHX_
1744 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1745 SVs_TEMP));
1746# else
1747 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1748 SVs_TEMP));
1749# endif
1750#else
1751 PUSHs(&PL_sv_undef);
1752#endif
1753
4a5df386
NC
1754 for (i = 1; i <= local_patch_count; i++) {
1755 /* This will be an undef, if PL_localpatches[i] is NULL. */
1756 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1757 }
1758
1759 XSRETURN(entries);
1760}
1761
be71fc8f
NC
1762#define INCPUSH_UNSHIFT 0x01
1763#define INCPUSH_ADD_OLD_VERS 0x02
1764#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1765#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1766#define INCPUSH_NOT_BASEDIR 0x10
1767#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1768#define INCPUSH_ADD_SUB_DIRS \
1769 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1770
312caa8e 1771STATIC void *
14dd3ad8 1772S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1773{
27da23d5 1774 dVAR;
2f9285f8 1775 PerlIO *rsfp;
312caa8e 1776 int argc = PL_origargc;
8f42b153 1777 char **argv = PL_origargv;
e1ec3a88 1778 const char *scriptname = NULL;
312caa8e 1779 VOL bool dosearch = FALSE;
c7030b81 1780 register char c;
737c24fc 1781 bool doextract = FALSE;
bd61b366 1782 const char *cddir = NULL;
ab019eaa 1783#ifdef USE_SITECUSTOMIZE
20ef40cf 1784 bool minus_f = FALSE;
ab019eaa 1785#endif
95670bde 1786 SV *linestr_sv = NULL;
5486870f 1787 bool add_read_e_script = FALSE;
87606032 1788 U32 lex_start_flags = 0;
009d90df 1789
ca7b837b 1790 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1791
6224f72b 1792 init_main_stash();
54310121 1793
c7030b81
NC
1794 {
1795 const char *s;
6224f72b
GS
1796 for (argc--,argv++; argc > 0; argc--,argv++) {
1797 if (argv[0][0] != '-' || !argv[0][1])
1798 break;
6224f72b
GS
1799 s = argv[0]+1;
1800 reswitch:
47f56822 1801 switch ((c = *s)) {
729a02f2 1802 case 'C':
1d5472a9
GS
1803#ifndef PERL_STRICT_CR
1804 case '\r':
1805#endif
6224f72b
GS
1806 case ' ':
1807 case '0':
1808 case 'F':
1809 case 'a':
1810 case 'c':
1811 case 'd':
1812 case 'D':
1813 case 'h':
1814 case 'i':
1815 case 'l':
1816 case 'M':
1817 case 'm':
1818 case 'n':
1819 case 'p':
1820 case 's':
1821 case 'u':
1822 case 'U':
1823 case 'v':
599cee73
PM
1824 case 'W':
1825 case 'X':
6224f72b 1826 case 'w':
97bd5664 1827 if ((s = moreswitches(s)))
6224f72b
GS
1828 goto reswitch;
1829 break;
33b78306 1830
1dbad523 1831 case 't':
22f7c9c9 1832 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1833 if( !PL_tainting ) {
1834 PL_taint_warn = TRUE;
1835 PL_tainting = TRUE;
1836 }
1837 s++;
1838 goto reswitch;
6224f72b 1839 case 'T':
22f7c9c9 1840 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1841 PL_tainting = TRUE;
317ea90d 1842 PL_taint_warn = FALSE;
6224f72b
GS
1843 s++;
1844 goto reswitch;
f86702cc 1845
bc9b29db
RH
1846 case 'E':
1847 PL_minus_E = TRUE;
1848 /* FALL THROUGH */
6224f72b 1849 case 'e':
f20b2998 1850 forbid_setid('e', FALSE);
3280af22 1851 if (!PL_e_script) {
396482e1 1852 PL_e_script = newSVpvs("");
5486870f 1853 add_read_e_script = TRUE;
6224f72b
GS
1854 }
1855 if (*++s)
3280af22 1856 sv_catpv(PL_e_script, s);
6224f72b 1857 else if (argv[1]) {
3280af22 1858 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1859 argc--,argv++;
1860 }
1861 else
47f56822 1862 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1863 sv_catpvs(PL_e_script, "\n");
6224f72b 1864 break;
afe37c7d 1865
20ef40cf 1866 case 'f':
f5542d3a 1867#ifdef USE_SITECUSTOMIZE
20ef40cf 1868 minus_f = TRUE;
f5542d3a 1869#endif
20ef40cf
GA
1870 s++;
1871 goto reswitch;
1872
6224f72b 1873 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1874 forbid_setid('I', FALSE);
bd61b366 1875 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1876 argc--,argv++;
1877 }
6224f72b 1878 if (s && *s) {
0df16ed7 1879 STRLEN len = strlen(s);
55b4bc1c 1880 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1881 }
1882 else
a67e862a 1883 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1884 break;
6224f72b 1885 case 'S':
f20b2998 1886 forbid_setid('S', FALSE);
6224f72b
GS
1887 dosearch = TRUE;
1888 s++;
1889 goto reswitch;
1890 case 'V':
7edfd0ef
NC
1891 {
1892 SV *opts_prog;
1893
7edfd0ef 1894 if (*++s != ':') {
37ca4a5b 1895 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1896 }
1897 else {
1898 ++s;
1899 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1900 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1901 0, s, 0);
1902 s += strlen(s);
1903 }
37ca4a5b 1904 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1905 /* don't look for script or read stdin */
1906 scriptname = BIT_BUCKET;
1907 goto reswitch;
6224f72b 1908 }
6224f72b 1909 case 'x':
737c24fc 1910 doextract = TRUE;
6224f72b 1911 s++;
304334da 1912 if (*s)
f4c556ac 1913 cddir = s;
6224f72b
GS
1914 break;
1915 case 0:
1916 break;
1917 case '-':
1918 if (!*++s || isSPACE(*s)) {
1919 argc--,argv++;
1920 goto switch_end;
1921 }
ee8bc8b7
NC
1922 /* catch use of gnu style long options.
1923 Both of these exit immediately. */
1924 if (strEQ(s, "version"))
1925 minus_v();
1926 if (strEQ(s, "help"))
1927 usage();
6224f72b
GS
1928 s--;
1929 /* FALL THROUGH */
1930 default:
cea2e8a9 1931 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1932 }
1933 }
c7030b81
NC
1934 }
1935
6224f72b 1936 switch_end:
54310121 1937
c7030b81
NC
1938 {
1939 char *s;
1940
f675dbe5
CB
1941 if (
1942#ifndef SECURE_INTERNAL_GETENV
1943 !PL_tainting &&
1944#endif
cf756827 1945 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1946 {
74288ac8
GS
1947 while (isSPACE(*s))
1948 s++;
317ea90d 1949 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1950 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1951 PL_tainting = TRUE;
317ea90d
MS
1952 PL_taint_warn = FALSE;
1953 }
74288ac8 1954 else {
bd61b366 1955 char *popt_copy = NULL;
74288ac8 1956 while (s && *s) {
54913509 1957 const char *d;
74288ac8
GS
1958 while (isSPACE(*s))
1959 s++;
1960 if (*s == '-') {
1961 s++;
1962 if (isSPACE(*s))
1963 continue;
1964 }
4ea8f8fb 1965 d = s;
74288ac8
GS
1966 if (!*s)
1967 break;
2b622f1a 1968 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1969 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1970 while (++s && *s) {
1971 if (isSPACE(*s)) {
cf756827 1972 if (!popt_copy) {
bfa6c418
NC
1973 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1974 s = popt_copy + (s - d);
1975 d = popt_copy;
cf756827 1976 }
4ea8f8fb
MS
1977 *s++ = '\0';
1978 break;
1979 }
1980 }
1c4db469 1981 if (*d == 't') {
317ea90d
MS
1982 if( !PL_tainting ) {
1983 PL_taint_warn = TRUE;
1984 PL_tainting = TRUE;
1985 }
1c4db469 1986 } else {
97bd5664 1987 moreswitches(d);
1c4db469 1988 }
6224f72b 1989 }
6224f72b
GS
1990 }
1991 }
c7030b81 1992 }
a0d0e21e 1993
c29067d7
CH
1994 /* Set $^X early so that it can be used for relocatable paths in @INC */
1995 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
1996 assert (!PL_tainted);
1997 TAINT;
1998 S_set_caret_X(aTHX);
1999 TAINT_NOT;
2000
43c0c913 2001#if defined(USE_SITECUSTOMIZE)
20ef40cf 2002 if (!minus_f) {
43c0c913 2003 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2004 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2005 ie a q() operator with a NUL byte as a the delimiter. This avoids
2006 problems with pathnames containing (say) ' */
43c0c913
NC
2007# ifdef PERL_IS_MINIPERL
2008 AV *const inc = GvAV(PL_incgv);
2009 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2010
2011 if (inc0) {
2012 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2013 Perl_newSVpvf(aTHX_
fc81b718
NC
2014 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2015 0, *inc0, 0,
2016 0, *inc0, 0));
43c0c913
NC
2017 }
2018# else
2019 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2020 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2021 if (raw_sitelib) {
2022 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2023 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2024 INCPUSH_CAN_RELOCATE);
2025 const char *const sitelib = SvPVX(sitelib_sv);
2026 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2027 Perl_newSVpvf(aTHX_
2028 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2029 0, sitelib, 0,
2030 0, sitelib, 0));
2031 assert (SvREFCNT(sitelib_sv) == 1);
2032 SvREFCNT_dec(sitelib_sv);
2033 }
43c0c913 2034# endif
20ef40cf
GA
2035 }
2036#endif
2037
6224f72b
GS
2038 if (!scriptname)
2039 scriptname = argv[0];
3280af22 2040 if (PL_e_script) {
6224f72b
GS
2041 argc++,argv--;
2042 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2043 }
bd61b366 2044 else if (scriptname == NULL) {
6224f72b
GS
2045#ifdef MSDOS
2046 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2047 moreswitches("h");
6224f72b
GS
2048#endif
2049 scriptname = "-";
2050 }
2051
b7975bdd 2052 assert (!PL_tainted);
2cace6ac 2053 init_perllib();
6224f72b 2054
a52eba0e 2055 {
f20b2998 2056 bool suidscript = FALSE;
829372d3 2057
8d113837 2058 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2059 if (!rsfp) {
2060 rsfp = PerlIO_stdin();
87606032 2061 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2062 }
6224f72b 2063
b24bc095 2064 validate_suid(rsfp);
6224f72b 2065
64ca3a65 2066#ifndef PERL_MICRO
a52eba0e
NC
2067# if defined(SIGCHLD) || defined(SIGCLD)
2068 {
2069# ifndef SIGCHLD
2070# define SIGCHLD SIGCLD
2071# endif
2072 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2073 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2074 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2075 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2076 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2077 }
0b5b802d 2078 }
a52eba0e 2079# endif
64ca3a65 2080#endif
0b5b802d 2081
737c24fc 2082 if (doextract) {
faef540c 2083
f20b2998 2084 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2085 setuid scripts. */
2086 forbid_setid('x', suidscript);
f20b2998 2087 /* Hence you can't get here if suidscript is true */
faef540c 2088
95670bde
NC
2089 linestr_sv = newSV_type(SVt_PV);
2090 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2091 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2092 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2093 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2094 }
f4c556ac 2095 }
6224f72b 2096
ea726b52 2097 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2098 CvUNIQUE_on(PL_compcv);
2099
dd2155a4 2100 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2101
dd69841b
BB
2102 PL_isarev = newHV();
2103
0c4f7ff0 2104 boot_core_PerlIO();
6224f72b 2105 boot_core_UNIVERSAL();
e1a479c5 2106 boot_core_mro();
4a5df386 2107 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2108
2109 if (xsinit)
acfe0abc 2110 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2111#ifndef PERL_MICRO
d0d72822 2112#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2113 init_os_extras();
6224f72b 2114#endif
64ca3a65 2115#endif
6224f72b 2116
29209bc5 2117#ifdef USE_SOCKS
1b9c9cf5
DH
2118# ifdef HAS_SOCKS5_INIT
2119 socks5_init(argv[0]);
2120# else
29209bc5 2121 SOCKSinit(argv[0]);
1b9c9cf5 2122# endif
ac27b0f5 2123#endif
29209bc5 2124
6224f72b
GS
2125 init_predump_symbols();
2126 /* init_postdump_symbols not currently designed to be called */
2127 /* more than once (ENV isn't cleared first, for example) */
2128 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2129 if (!PL_do_undump)
6224f72b
GS
2130 init_postdump_symbols(argc,argv,env);
2131
27da23d5
JH
2132 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2133 * or explicitly in some platforms.
085a54d9 2134 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2135 * look like the user wants to use UTF-8. */
a0fd4948 2136#if defined(__SYMBIAN32__)
27da23d5
JH
2137 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2138#endif
e27b5b51 2139# ifndef PERL_IS_MINIPERL
06e66572
JH
2140 if (PL_unicode) {
2141 /* Requires init_predump_symbols(). */
a05d7ebb 2142 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2143 IO* io;
2144 PerlIO* fp;
2145 SV* sv;
2146
a05d7ebb 2147 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2148 * and the default open disciplines. */
a05d7ebb
JH
2149 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2150 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2151 (fp = IoIFP(io)))
2152 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2153 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2154 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2155 (fp = IoOFP(io)))
2156 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2157 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2158 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2159 (fp = IoOFP(io)))
2160 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2161 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2162 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2163 SVt_PV)))) {
a05d7ebb
JH
2164 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2165 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2166 if (in) {
2167 if (out)
76f68e9b 2168 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2169 else
76f68e9b 2170 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2171 }
2172 else if (out)
76f68e9b 2173 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2174 SvSETMAGIC(sv);
2175 }
b310b053
JH
2176 }
2177 }
e27b5b51 2178#endif
b310b053 2179
c7030b81
NC
2180 {
2181 const char *s;
4ffa73a3
JH
2182 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2183 if (strEQ(s, "unsafe"))
2184 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2185 else if (strEQ(s, "safe"))
2186 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2187 else
2188 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2189 }
c7030b81 2190 }
4ffa73a3 2191
81d86705 2192#ifdef PERL_MAD
c7030b81
NC
2193 {
2194 const char *s;
2cc12391
TC
2195 if (!PL_tainting &&
2196 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC
2197 PL_madskills = 1;
2198 PL_minus_c = 1;
2199 if (!s || !s[0])
2200 PL_xmlfp = PerlIO_stdout();
2201 else {
2202 PL_xmlfp = PerlIO_open(s, "w");
2203 if (!PL_xmlfp)
2204 Perl_croak(aTHX_ "Can't open %s", s);
2205 }
1a9a51d4 2206 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2207 }
c7030b81
NC
2208 }
2209
2210 {
2211 const char *s;
81d86705
NC
2212 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2213 PL_madskills = atoi(s);
1a9a51d4 2214 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2215 }
c7030b81 2216 }
81d86705
NC
2217#endif
2218
87606032 2219 lex_start(linestr_sv, rsfp, lex_start_flags);
95670bde
NC
2220 if(linestr_sv)
2221 SvREFCNT_dec(linestr_sv);
2222
219f7226 2223 PL_subname = newSVpvs("main");
6224f72b 2224
5486870f
DM
2225 if (add_read_e_script)
2226 filter_add(read_e_script, NULL);
2227
6224f72b
GS
2228 /* now parse the script */
2229
93189314 2230 SETERRNO(0,SS_NORMAL);
28ac2b49 2231 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2232 if (PL_minus_c)
cea2e8a9 2233 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2234 else {
cea2e8a9 2235 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2236 PL_origfilename);
6224f72b
GS
2237 }
2238 }
57843af0 2239 CopLINE_set(PL_curcop, 0);
03d9f026 2240 SET_CURSTASH(PL_defstash);
3280af22
NIS
2241 if (PL_e_script) {
2242 SvREFCNT_dec(PL_e_script);
a0714e2c 2243 PL_e_script = NULL;
6224f72b
GS
2244 }
2245
3280af22 2246 if (PL_do_undump)
6224f72b
GS
2247 my_unexec();
2248
57843af0
GS
2249 if (isWARN_ONCE) {
2250 SAVECOPFILE(PL_curcop);
2251 SAVECOPLINE(PL_curcop);
3280af22 2252 gv_check(PL_defstash);
57843af0 2253 }
6224f72b
GS
2254
2255 LEAVE;
2256 FREETMPS;
2257
2258#ifdef MYMALLOC
f6a607bc
RGS
2259 {
2260 const char *s;
6224f72b
GS
2261 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2262 dump_mstats("after compilation:");
f6a607bc 2263 }
6224f72b
GS
2264#endif
2265
2266 ENTER;
febb3a6d 2267 PL_restartjmpenv = NULL;
3280af22 2268 PL_restartop = 0;
312caa8e 2269 return NULL;
6224f72b
GS
2270}
2271
954c1994
GS
2272/*
2273=for apidoc perl_run
2274
2275Tells a Perl interpreter to run. See L<perlembed>.
2276
2277=cut
2278*/
2279
6224f72b 2280int
0cb96387 2281perl_run(pTHXx)
6224f72b 2282{
97aff369 2283 dVAR;
6224f72b 2284 I32 oldscope;
14dd3ad8 2285 int ret = 0;
db36c5a1 2286 dJMPENV;
6224f72b 2287
7918f24d
NC
2288 PERL_ARGS_ASSERT_PERL_RUN;
2289#ifndef MULTIPLICITY
ed6c66dd 2290 PERL_UNUSED_ARG(my_perl);
7918f24d 2291#endif
9d4ba2ae 2292
3280af22 2293 oldscope = PL_scopestack_ix;
96e176bf
CL
2294#ifdef VMS
2295 VMSISH_HUSHED = 0;
2296#endif
6224f72b 2297
14dd3ad8 2298 JMPENV_PUSH(ret);
6224f72b
GS
2299 switch (ret) {
2300 case 1:
2301 cxstack_ix = -1; /* start context stack again */
312caa8e 2302 goto redo_body;
14dd3ad8 2303 case 0: /* normal completion */
14dd3ad8
GS
2304 redo_body:
2305 run_body(oldscope);
14dd3ad8
GS
2306 /* FALL THROUGH */
2307 case 2: /* my_exit() */
3280af22 2308 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2309 LEAVE;
2310 FREETMPS;
03d9f026 2311 SET_CURSTASH(PL_defstash);
3a1ee7e8 2312 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2313 PL_endav && !PL_minus_c) {
ca7b837b 2314 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2315 call_list(oldscope, PL_endav);
9ebf26ad 2316 }
6224f72b
GS
2317#ifdef MYMALLOC
2318 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2319 dump_mstats("after execution: ");
2320#endif
37038d91 2321 ret = STATUS_EXIT;
14dd3ad8 2322 break;
6224f72b 2323 case 3:
312caa8e
CS
2324 if (PL_restartop) {
2325 POPSTACK_TO(PL_mainstack);
2326 goto redo_body;
6224f72b 2327 }
5637ef5b 2328 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2329 FREETMPS;
14dd3ad8
GS
2330 ret = 1;
2331 break;
6224f72b
GS
2332 }
2333
14dd3ad8
GS
2334 JMPENV_POP;
2335 return ret;
312caa8e
CS
2336}
2337
dd374669 2338STATIC void
14dd3ad8
GS
2339S_run_body(pTHX_ I32 oldscope)
2340{
97aff369 2341 dVAR;
6224f72b 2342 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2343 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2344
3280af22 2345 if (!PL_restartop) {
81d86705
NC
2346#ifdef PERL_MAD
2347 if (PL_xmlfp) {
2348 xmldump_all();
2349 exit(0); /* less likely to core dump than my_exit(0) */
2350 }
2351#endif
cf2782cd 2352#ifdef DEBUGGING
f0e3f042
CS
2353 if (DEBUG_x_TEST || DEBUG_B_TEST)
2354 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2355 if (!DEBUG_q_TEST)
2356 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2357#endif
6224f72b 2358
3280af22 2359 if (PL_minus_c) {
bf49b057 2360 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2361 my_exit(0);
2362 }
3280af22 2363 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2364 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2365 if (PL_initav) {
ca7b837b 2366 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2367 call_list(oldscope, PL_initav);
9ebf26ad 2368 }
f1fac472 2369#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2370 if (PL_main_root && PL_main_root->op_slabbed)
2371 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2372#endif
6224f72b
GS
2373 }
2374
2375 /* do it */
2376
ca7b837b 2377 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2378
3280af22 2379 if (PL_restartop) {
febb3a6d 2380 PL_restartjmpenv = NULL;
533c011a 2381 PL_op = PL_restartop;
3280af22 2382 PL_restartop = 0;
cea2e8a9 2383 CALLRUNOPS(aTHX);
6224f72b 2384 }
3280af22
NIS
2385 else if (PL_main_start) {
2386 CvDEPTH(PL_main_cv) = 1;
533c011a 2387 PL_op = PL_main_start;
cea2e8a9 2388 CALLRUNOPS(aTHX);
6224f72b 2389 }
f6b3007c 2390 my_exit(0);
118e2215 2391 assert(0); /* NOTREACHED */
6224f72b
GS
2392}
2393
954c1994 2394/*
ccfc67b7
JH
2395=head1 SV Manipulation Functions
2396
954c1994
GS
2397=for apidoc p||get_sv
2398
64ace3f8
NC
2399Returns the SV of the specified Perl scalar. C<flags> are passed to
2400C<gv_fetchpv>. If C<GV_ADD> is set and the
2401Perl variable does not exist then it will be created. If C<flags> is zero
2402and the variable does not exist then NULL is returned.
954c1994
GS
2403
2404=cut
2405*/
2406
6224f72b 2407SV*
64ace3f8 2408Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2409{
2410 GV *gv;
7918f24d
NC
2411
2412 PERL_ARGS_ASSERT_GET_SV;
2413
64ace3f8 2414 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2415 if (gv)
2416 return GvSV(gv);
a0714e2c 2417 return NULL;
6224f72b
GS
2418}
2419
954c1994 2420/*
ccfc67b7
JH
2421=head1 Array Manipulation Functions
2422
954c1994
GS
2423=for apidoc p||get_av
2424
f0b90de1
SF
2425Returns the AV of the specified Perl global or package array with the given
2426name (so it won't work on lexical variables). C<flags> are passed
2427to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2428Perl variable does not exist then it will be created. If C<flags> is zero
2429and the variable does not exist then NULL is returned.
954c1994 2430
f0b90de1
SF
2431Perl equivalent: C<@{"$name"}>.
2432
954c1994
GS
2433=cut
2434*/
2435
6224f72b 2436AV*
cbfd0a87 2437Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2438{
cbfd0a87 2439 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2440
2441 PERL_ARGS_ASSERT_GET_AV;
2442
cbfd0a87 2443 if (flags)
6224f72b
GS
2444 return GvAVn(gv);
2445 if (gv)
2446 return GvAV(gv);
7d49f689 2447 return NULL;
6224f72b
GS
2448}
2449
954c1994 2450/*
ccfc67b7
JH
2451=head1 Hash Manipulation Functions
2452
954c1994
GS
2453=for apidoc p||get_hv
2454
6673a63c
NC
2455Returns the HV of the specified Perl hash. C<flags> are passed to
2456C<gv_fetchpv>. If C<GV_ADD> is set and the
2457Perl variable does not exist then it will be created. If C<flags> is zero
2458and the variable does not exist then NULL is returned.
954c1994
GS
2459
2460=cut
2461*/
2462
6224f72b 2463HV*
6673a63c 2464Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2465{
6673a63c 2466 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2467
2468 PERL_ARGS_ASSERT_GET_HV;
2469
6673a63c 2470 if (flags)
a0d0e21e
LW
2471 return GvHVn(gv);
2472 if (gv)
2473 return GvHV(gv);
5c284bb0 2474 return NULL;
a0d0e21e
LW
2475}
2476
954c1994 2477/*
ccfc67b7
JH
2478=head1 CV Manipulation Functions
2479
780a5241
NC
2480=for apidoc p||get_cvn_flags
2481
2482Returns the CV of the specified Perl subroutine. C<flags> are passed to
2483C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2484exist then it will be declared (which has the same effect as saying
2485C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2486then NULL is returned.
2487
954c1994
GS
2488=for apidoc p||get_cv
2489
780a5241 2490Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2491
2492=cut
2493*/
2494
a0d0e21e 2495CV*
780a5241 2496Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2497{
780a5241 2498 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2499
2500 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2501
334dda80
FC
2502 /* XXX this is probably not what they think they're getting.
2503 * It has the same effect as "sub name;", i.e. just a forward
2504 * declaration! */
780a5241 2505 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2506 return newSTUB(gv,0);
780a5241 2507 }
a0d0e21e 2508 if (gv)
8ebc5c01 2509 return GvCVu(gv);
601f1833 2510 return NULL;
a0d0e21e
LW
2511}
2512
2c67934f
NC
2513/* Nothing in core calls this now, but we can't replace it with a macro and
2514 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2515CV*
2516Perl_get_cv(pTHX_ const char *name, I32 flags)
2517{
7918f24d
NC
2518 PERL_ARGS_ASSERT_GET_CV;
2519
780a5241
NC
2520 return get_cvn_flags(name, strlen(name), flags);
2521}
2522
79072805
LW
2523/* Be sure to refetch the stack pointer after calling these routines. */
2524
954c1994 2525/*
ccfc67b7
JH
2526
2527=head1 Callback Functions
2528
954c1994
GS
2529=for apidoc p||call_argv
2530
f0b90de1
SF
2531Performs a callback to the specified named and package-scoped Perl subroutine
2532with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2533
2534Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2535
2536=cut
2537*/
2538
a0d0e21e 2539I32
8f42b153 2540Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2541
8ac85365
NIS
2542 /* See G_* flags in cop.h */
2543 /* null terminated arg list */
8990e307 2544{
97aff369 2545 dVAR;
a0d0e21e 2546 dSP;
8990e307 2547
7918f24d
NC
2548 PERL_ARGS_ASSERT_CALL_ARGV;
2549
924508f0 2550 PUSHMARK(SP);
a0d0e21e 2551 if (argv) {
8990e307 2552 while (*argv) {
6e449a3a 2553 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2554 argv++;
2555 }
a0d0e21e 2556 PUTBACK;
8990e307 2557 }
864dbfa3 2558 return call_pv(sub_name, flags);
8990e307
LW
2559}
2560
954c1994
GS
2561/*
2562=for apidoc p||call_pv
2563
2564Performs a callback to the specified Perl sub. See L<perlcall>.
2565
2566=cut
2567*/
2568
a0d0e21e 2569I32
864dbfa3 2570Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2571 /* name of the subroutine */
2572 /* See G_* flags in cop.h */
a0d0e21e 2573{
7918f24d
NC
2574 PERL_ARGS_ASSERT_CALL_PV;
2575
0da0e728 2576 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2577}
2578
954c1994
GS
2579/*
2580=for apidoc p||call_method
2581
2582Performs a callback to the specified Perl method. The blessed object must
2583be on the stack. See L<perlcall>.
2584
2585=cut
2586*/
2587
a0d0e21e 2588I32
864dbfa3 2589Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2590 /* name of the subroutine */
2591 /* See G_* flags in cop.h */
a0d0e21e 2592{
46ca9bac 2593 STRLEN len;
7918f24d
NC
2594 PERL_ARGS_ASSERT_CALL_METHOD;
2595
46ca9bac 2596 len = strlen(methname);
2597
2598 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2599 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2600}
2601
2602/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2603/*
2604=for apidoc p||call_sv
2605
2606Performs a callback to the Perl sub whose name is in the SV. See
2607L<perlcall>.
2608
2609=cut
2610*/
2611
a0d0e21e 2612I32
001d637e 2613Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2614 /* See G_* flags in cop.h */
a0d0e21e 2615{
27da23d5 2616 dVAR; dSP;
a0d0e21e 2617 LOGOP myop; /* fake syntax tree node */
968b3946 2618 UNOP method_op;
aa689395 2619 I32 oldmark;
8ea43dc8 2620 VOL I32 retval = 0;
a0d0e21e 2621 I32 oldscope;
54310121 2622 bool oldcatch = CATCH_GET;
6224f72b 2623 int ret;
c4420975 2624 OP* const oldop = PL_op;
db36c5a1 2625 dJMPENV;
1e422769 2626
7918f24d
NC
2627 PERL_ARGS_ASSERT_CALL_SV;
2628
a0d0e21e
LW
2629 if (flags & G_DISCARD) {
2630 ENTER;
2631 SAVETMPS;
2632 }
2f8edad0
NC
2633 if (!(flags & G_WANT)) {
2634 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2635 */
2636 flags |= G_SCALAR;
2637 }
a0d0e21e 2638
aa689395 2639 Zero(&myop, 1, LOGOP);
5f66b61c 2640 myop.op_next = NULL;
f51d4af5 2641 if (!(flags & G_NOARGS))
aa689395 2642 myop.op_flags |= OPf_STACKED;
4f911530 2643 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2644 SAVEOP();
533c011a 2645 PL_op = (OP*)&myop;
aa689395 2646
3280af22
NIS
2647 EXTEND(PL_stack_sp, 1);
2648 *++PL_stack_sp = sv;
aa689395 2649 oldmark = TOPMARK;
3280af22 2650 oldscope = PL_scopestack_ix;
a0d0e21e 2651
3280af22 2652 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2653 /* Handle first BEGIN of -d. */
3280af22 2654 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2655 /* Try harder, since this may have been a sighandler, thus
2656 * curstash may be meaningless. */
ea726b52 2657 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2658 && !(flags & G_NODEBUG))
533c011a 2659 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2660
968b3946
GS
2661 if (flags & G_METHOD) {
2662 Zero(&method_op, 1, UNOP);
2663 method_op.op_next = PL_op;
2664 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2665 method_op.op_type = OP_METHOD;
968b3946 2666 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2667 myop.op_type = OP_ENTERSUB;
f39d0b86 2668 PL_op = (OP*)&method_op;
968b3946
GS
2669 }
2670
312caa8e 2671 if (!(flags & G_EVAL)) {
0cdb2077 2672 CATCH_SET(TRUE);
d6f07c05 2673 CALL_BODY_SUB((OP*)&myop);
312caa8e 2674 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2675 CATCH_SET(oldcatch);
312caa8e
CS
2676 }
2677 else {
d78bda3d 2678 myop.op_other = (OP*)&myop;
3280af22 2679 PL_markstack_ptr--;
edb2152a 2680 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2681 PL_markstack_ptr++;
a0d0e21e 2682
14dd3ad8 2683 JMPENV_PUSH(ret);
edb2152a 2684
6224f72b
GS
2685 switch (ret) {
2686 case 0:
14dd3ad8 2687 redo_body:
d6f07c05 2688 CALL_BODY_SUB((OP*)&myop);
312caa8e 2689 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2690 if (!(flags & G_KEEPERR)) {
ab69dbc2 2691 CLEAR_ERRSV();
8433848b 2692 }
a0d0e21e 2693 break;
6224f72b 2694 case 1:
f86702cc 2695 STATUS_ALL_FAILURE;
a0d0e21e 2696 /* FALL THROUGH */
6224f72b 2697 case 2:
a0d0e21e 2698 /* my_exit() was called */
03d9f026 2699 SET_CURSTASH(PL_defstash);
a0d0e21e 2700 FREETMPS;
14dd3ad8 2701 JMPENV_POP;
f86702cc 2702 my_exit_jump();
118e2215 2703 assert(0); /* NOTREACHED */
6224f72b 2704 case 3:
3280af22 2705 if (PL_restartop) {
febb3a6d 2706 PL_restartjmpenv = NULL;
533c011a 2707 PL_op = PL_restartop;
3280af22 2708 PL_restartop = 0;
312caa8e 2709 goto redo_body;
a0d0e21e 2710 }
3280af22 2711 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2712 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2713 retval = 0;
2714 else {
2715 retval = 1;
3280af22 2716 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2717 }
312caa8e 2718 break;
a0d0e21e 2719 }
a0d0e21e 2720
edb2152a
NC
2721 if (PL_scopestack_ix > oldscope)
2722 delete_eval_scope();
14dd3ad8 2723 JMPENV_POP;
a0d0e21e 2724 }
1e422769 2725
a0d0e21e 2726 if (flags & G_DISCARD) {
3280af22 2727 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2728 retval = 0;
2729 FREETMPS;
2730 LEAVE;
2731 }
533c011a 2732 PL_op = oldop;
a0d0e21e
LW
2733 return retval;
2734}
2735
6e72f9df 2736/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2737
954c1994
GS
2738/*
2739=for apidoc p||eval_sv
2740
be064c4a
DM
2741Tells Perl to C<eval> the string in the SV. It supports the same flags
2742as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2743
2744=cut
2745*/
2746
a0d0e21e 2747I32
864dbfa3 2748Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2749
8ac85365 2750 /* See G_* flags in cop.h */
a0d0e21e 2751{
97aff369 2752 dVAR;
924508f0 2753 dSP;
a0d0e21e 2754 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2755 VOL I32 oldmark = SP - PL_stack_base;
2756 VOL I32 retval = 0;
6224f72b 2757 int ret;
c4420975 2758 OP* const oldop = PL_op;
db36c5a1 2759 dJMPENV;
84902520 2760
7918f24d
NC
2761 PERL_ARGS_ASSERT_EVAL_SV;
2762
4633a7c4
LW
2763 if (flags & G_DISCARD) {
2764 ENTER;
2765 SAVETMPS;
2766 }
2767
462e5cf6 2768 SAVEOP();
533c011a
NIS
2769 PL_op = (OP*)&myop;
2770 Zero(PL_op, 1, UNOP);
3280af22
NIS
2771 EXTEND(PL_stack_sp, 1);
2772 *++PL_stack_sp = sv;
79072805 2773
4633a7c4
LW
2774 if (!(flags & G_NOARGS))
2775 myop.op_flags = OPf_STACKED;
5f66b61c 2776 myop.op_next = NULL;
6e72f9df 2777 myop.op_type = OP_ENTEREVAL;
4f911530 2778 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2779 if (flags & G_KEEPERR)
2780 myop.op_flags |= OPf_SPECIAL;
d24ca0c5
DM
2781 if (PL_reg_state.re_reparsing)
2782 myop.op_private = OPpEVAL_COPHH;
4633a7c4 2783
dedbcade
DM
2784 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2785 * before a PUSHEVAL, which corrupts the stack after a croak */
2786 TAINT_PROPER("eval_sv()");
2787
14dd3ad8 2788 JMPENV_PUSH(ret);
6224f72b
GS
2789 switch (ret) {
2790 case 0:
14dd3ad8 2791 redo_body:
2ba65d5f
DM
2792 if (PL_op == (OP*)(&myop)) {
2793 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2794 if (!PL_op)
2795 goto fail; /* failed in compilation */
2796 }
4aca2f62 2797 CALLRUNOPS(aTHX);
312caa8e 2798 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2799 if (!(flags & G_KEEPERR)) {
ab69dbc2 2800 CLEAR_ERRSV();
8433848b 2801 }
4633a7c4 2802 break;
6224f72b 2803 case 1:
f86702cc 2804 STATUS_ALL_FAILURE;
4633a7c4 2805 /* FALL THROUGH */
6224f72b 2806 case 2:
4633a7c4 2807 /* my_exit() was called */
03d9f026 2808 SET_CURSTASH(PL_defstash);
4633a7c4 2809 FREETMPS;
14dd3ad8 2810 JMPENV_POP;
f86702cc 2811 my_exit_jump();
118e2215 2812 assert(0); /* NOTREACHED */
6224f72b 2813 case 3:
3280af22 2814 if (PL_restartop) {
febb3a6d 2815 PL_restartjmpenv = NULL;
533c011a 2816 PL_op = PL_restartop;
3280af22 2817 PL_restartop = 0;
312caa8e 2818 goto redo_body;
4633a7c4 2819 }
4aca2f62 2820 fail:
3280af22 2821 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2822 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2823 retval = 0;
2824 else {
2825 retval = 1;
3280af22 2826 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2827 }
312caa8e 2828 break;
4633a7c4
LW
2829 }
2830
14dd3ad8 2831 JMPENV_POP;
4633a7c4 2832 if (flags & G_DISCARD) {
3280af22 2833 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2834 retval = 0;
2835 FREETMPS;
2836 LEAVE;
2837 }
533c011a 2838 PL_op = oldop;
4633a7c4
LW
2839 return retval;
2840}
2841
954c1994
GS
2842/*
2843=for apidoc p||eval_pv
2844
2845Tells Perl to C<eval> the given string and return an SV* result.
2846
2847=cut
2848*/
2849
137443ea 2850SV*
864dbfa3 2851Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2852{
97aff369 2853 dVAR;
137443ea
PP
2854 dSP;
2855 SV* sv = newSVpv(p, 0);
2856
7918f24d
NC
2857 PERL_ARGS_ASSERT_EVAL_PV;
2858
864dbfa3 2859 eval_sv(sv, G_SCALAR);
137443ea
PP
2860 SvREFCNT_dec(sv);
2861
2862 SPAGAIN;
2863 sv = POPs;
2864 PUTBACK;
2865
2d8e6c8d 2866 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2867 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2868 }
137443ea
PP
2869
2870 return sv;
2871}
2872
4633a7c4
LW
2873/* Require a module. */
2874
954c1994 2875/*
ccfc67b7
JH
2876=head1 Embedding Functions
2877
954c1994
GS
2878=for apidoc p||require_pv
2879
7d3fb230
BS
2880Tells Perl to C<require> the file named by the string argument. It is
2881analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2882implemented that way; consider using load_module instead.
954c1994 2883
7d3fb230 2884=cut */
954c1994 2885
4633a7c4 2886void
864dbfa3 2887Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2888{
97aff369 2889 dVAR;
d3acc0f7 2890 dSP;
97aff369 2891 SV* sv;
7918f24d
NC
2892
2893 PERL_ARGS_ASSERT_REQUIRE_PV;
2894
e788e7d3 2895 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2896 PUTBACK;
be41e5d9
NC
2897 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2898 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2899 SPAGAIN;
2900 POPSTACK;
79072805
LW
2901}
2902
76e3520e 2903STATIC void
b6f82619 2904S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2905{
ab821d7f 2906 /* This message really ought to be max 23 lines.
75c72d73 2907 * Removed -h because the user already knows that option. Others? */
fb73857a 2908
1566c39d
NC
2909 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2910 minimum of 509 character string literals. */
27da23d5 2911 static const char * const usage_msg[] = {
1566c39d
NC
2912" -0[octal] specify record separator (\\0, if no argument)\n"
2913" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2914" -C[number/list] enables the listed Unicode features\n"
2915" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2916" -d[:debugger] run program under debugger\n"
2917" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2918" -e program one line of program (several -e's allowed, omit programfile)\n"
2919" -E program like -e, but enables all optional features\n"
2920" -f don't do $sitelib/sitecustomize.pl at startup\n"
2921" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2922" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2923" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2924" -l[octal] enable line ending processing, specifies line terminator\n"
2925" -[mM][-]module execute \"use/no module...\" before executing program\n"
2926" -n assume \"while (<>) { ... }\" loop around program\n"
2927" -p assume loop like -n but print line also, like sed\n"
2928" -s enable rudimentary parsing for switches after programfile\n"
2929" -S look for programfile using PATH environment variable\n",
2930" -t enable tainting warnings\n"
2931" -T enable tainting checks\n"
2932" -u dump core after parsing program\n"
2933" -U allow unsafe operations\n"
2934" -v print version, patchlevel and license\n"
2935" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2936" -w enable many useful warnings\n"
1566c39d
NC
2937" -W enable all warnings\n"
2938" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2939" -X disable all warnings\n"
2940" \n"
2941"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2942NULL
2943};
27da23d5 2944 const char * const *p = usage_msg;
1566c39d 2945 PerlIO *out = PerlIO_stdout();
fb73857a 2946
1566c39d
NC
2947 PerlIO_printf(out,
2948 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2949 PL_origargv[0]);
fb73857a 2950 while (*p)
1566c39d 2951 PerlIO_puts(out, *p++);
b6f82619 2952 my_exit(0);
4633a7c4
LW
2953}
2954
b4ab917c
DM
2955/* convert a string of -D options (or digits) into an int.
2956 * sets *s to point to the char after the options */
2957
2958#ifdef DEBUGGING
2959int
e1ec3a88 2960Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2961{
27da23d5 2962 static const char * const usage_msgd[] = {
651b8f1a
NC
2963 " Debugging flag values: (see also -d)\n"
2964 " p Tokenizing and parsing (with v, displays parse stack)\n"
2965 " s Stack snapshots (with v, displays all stacks)\n"
2966 " l Context (loop) stack processing\n"
2967 " t Trace execution\n"
2968 " o Method and overloading resolution\n",
2969 " c String/numeric conversions\n"
2970 " P Print profiling info, source file input state\n"
2971 " m Memory and SV allocation\n"
2972 " f Format processing\n"
2973 " r Regular expression parsing and execution\n"
2974 " x Syntax tree dump\n",
2975 " u Tainting checks\n"
2976 " H Hash dump -- usurps values()\n"
2977 " X Scratchpad allocation\n"
2978 " D Cleaning up\n"
56967202 2979 " S Op slab allocation\n"
651b8f1a
NC
2980 " T Tokenising\n"
2981 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2982 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2983 " v Verbose: use in conjunction with other flags\n"
2984 " C Copy On Write\n"
2985 " A Consistency checks on internal structures\n"
2986 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2987 " M trace smart match resolution\n"
2988 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2989 NULL
2990 };
b4ab917c 2991 int i = 0;
7918f24d
NC
2992
2993 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2994
b4ab917c
DM
2995 if (isALPHA(**s)) {
2996 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2997 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2998
2999 for (; isALNUM(**s); (*s)++) {
c4420975 3000 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3001 if (d)
3002 i |= 1 << (d - debopts);
3003 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3004 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3005 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3006 }
3007 }
e6e64d9b 3008 else if (isDIGIT(**s)) {
b4ab917c
DM
3009 i = atoi(*s);
3010 for (; isALNUM(**s); (*s)++) ;
3011 }
ddcf8bc1 3012 else if (givehelp) {
06e869a4 3013 const char *const *p = usage_msgd;
651b8f1a 3014 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3015 }
b4ab917c
DM
3016# ifdef EBCDIC
3017 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3018 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3019 "-Dp not implemented on this platform\n");
3020# endif
3021 return i;
3022}
3023#endif
3024
79072805
LW
3025/* This routine handles any switches that can be given during run */
3026
c7030b81
NC
3027const char *
3028Perl_moreswitches(pTHX_ const char *s)
79072805 3029{
27da23d5 3030 dVAR;
84c133a0 3031 UV rschar;
0544e6df 3032 const char option = *s; /* used to remember option in -m/-M code */
79072805 3033
7918f24d
NC
3034 PERL_ARGS_ASSERT_MORESWITCHES;
3035
79072805
LW
3036 switch (*s) {
3037 case '0':
a863c7d1 3038 {
f2095865 3039 I32 flags = 0;
a3b680e6 3040 STRLEN numlen;
f2095865
JH
3041
3042 SvREFCNT_dec(PL_rs);
3043 if (s[1] == 'x' && s[2]) {
a3b680e6 3044 const char *e = s+=2;
f2095865
JH
3045 U8 *tmps;
3046
a3b680e6
AL
3047 while (*e)
3048 e++;
f2095865
JH
3049 numlen = e - s;
3050 flags = PERL_SCAN_SILENT_ILLDIGIT;
3051 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3052 if (s + numlen < e) {
3053 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3054 numlen = 0;
3055 s--;
3056 }
396482e1 3057 PL_rs = newSVpvs("");
c5661c80 3058 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3059 tmps = (U8*)SvPVX(PL_rs);
3060 uvchr_to_utf8(tmps, rschar);
3061 SvCUR_set(PL_rs, UNISKIP(rschar));
3062 SvUTF8_on(PL_rs);
3063 }
3064 else {
3065 numlen = 4;
3066 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3067 if (rschar & ~((U8)~0))
3068 PL_rs = &PL_sv_undef;
3069 else if (!rschar && numlen >= 2)
396482e1 3070 PL_rs = newSVpvs("");
f2095865
JH
3071 else {
3072 char ch = (char)rschar;
3073 PL_rs = newSVpvn(&ch, 1);
3074 }
3075 }
64ace3f8 3076 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3077 return s + numlen;
a863c7d1 3078 }
46487f74 3079 case 'C':
a05d7ebb 3080 s++;
dd374669 3081 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3082 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3083 PL_utf8cache = -1;
46487f74 3084 return s;
2304df62 3085 case 'F':
3280af22 3086 PL_minus_F = TRUE;
ebce5377
RGS
3087 PL_splitstr = ++s;
3088 while (*s && !isSPACE(*s)) ++s;
e49e380e 3089 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3090 return s;
79072805 3091 case 'a':
3280af22 3092 PL_minus_a = TRUE;
79072805
LW
3093 s++;
3094 return s;
3095 case 'c':
3280af22 3096 PL_minus_c = TRUE;
79072805
LW
3097 s++;
3098 return s;
3099 case 'd':
f20b2998 3100 forbid_setid('d', FALSE);
4633a7c4 3101 s++;
2cbb2ee1
RGS
3102
3103 /* -dt indicates to the debugger that threads will be used */
3104 if (*s == 't' && !isALNUM(s[1])) {
3105 ++s;
3106 my_setenv("PERL5DB_THREADED", "1");
3107 }
3108
70c94a19
RR
3109 /* The following permits -d:Mod to accepts arguments following an =
3110 in the fashion that -MSome::Mod does. */
3111 if (*s == ':' || *s == '=') {
b19934fb
NC
3112 const char *start;
3113 const char *end;
3114 SV *sv;
3115
3116 if (*++s == '-') {
3117 ++s;
3118 sv = newSVpvs("no Devel::");
3119 } else {
3120 sv = newSVpvs("use Devel::");
3121 }
3122
3123 start = s;
3124 end = s + strlen(s);
f85893a1 3125
b19934fb 3126 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3127 while(isALNUM(*s) || *s==':') ++s;
3128 if (*s != '=')
f85893a1 3129 sv_catpvn(sv, start, end - start);
70c94a19
RR
3130 else {
3131 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3132 /* Don't use NUL as q// delimiter here, this string goes in the
3133 * environment. */
3134 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3135 }
f85893a1 3136 s = end;
184f32ec 3137 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3138 SvREFCNT_dec(sv);
4633a7c4 3139 }
ed094faf 3140 if (!PL_perldb) {
3280af22 3141 PL_perldb = PERLDB_ALL;
a0d0e21e 3142 init_debugger();
ed094faf 3143 }
79072805
LW
3144 return s;
3145 case 'D':
0453d815 3146 {
79072805 3147#ifdef DEBUGGING
f20b2998 3148 forbid_setid('D', FALSE);
b4ab917c 3149 s++;
dd374669 3150 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3151#else /* !DEBUGGING */
0453d815 3152 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3153 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3154 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3155 for (s++; isALNUM(*s); s++) ;
79072805 3156#endif
79072805 3157 return s;
0453d815 3158 }
4633a7c4 3159 case 'h':
b6f82619 3160 usage();
79072805 3161 case 'i':
43c5f42d 3162 Safefree(PL_inplace);
c030f24b
GH
3163#if defined(__CYGWIN__) /* do backup extension automagically */
3164 if (*(s+1) == '\0') {
c86a4f2e 3165 PL_inplace = savepvs(".bak");
c030f24b
GH
3166 return s+1;
3167 }
3168#endif /* __CYGWIN__ */
5ef5d758 3169 {
d4c19fe8 3170 const char * const start = ++s;
5ef5d758
NC
3171 while (*s && !isSPACE(*s))
3172 ++s;
3173
3174 PL_inplace = savepvn(start, s - start);
3175 }
7b8d334a 3176 if (*s) {
5ef5d758 3177 ++s;
7b8d334a 3178 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3179 s++;
7b8d334a 3180 }
fb73857a 3181 return s;
4e49a025 3182 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3183 forbid_setid('I', FALSE);
fb73857a
PP
3184 ++s;
3185 while (*s && isSPACE(*s))
3186 ++s;
3187 if (*s) {
c7030b81 3188 const char *e, *p;
0df16ed7
GS
3189 p = s;
3190 /* ignore trailing spaces (possibly followed by other switches) */
3191 do {
3192 for (e = p; *e && !isSPACE(*e); e++) ;
3193 p = e;
3194 while (isSPACE(*p))
3195 p++;
3196 } while (*p && *p != '-');
55b4bc1c 3197 incpush(s, e-s,
e28f3139 3198 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3199 s = p;
3200 if (*s == '-')
3201 s++;
79072805
LW
3202 }
3203 else
a67e862a 3204 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3205 return s;
79072805 3206 case 'l':
3280af22 3207 PL_minus_l = TRUE;
79072805 3208 s++;
7889fe52
NIS
3209 if (PL_ors_sv) {
3210 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3211 PL_ors_sv = NULL;
7889fe52 3212 }
79072805 3213 if (isDIGIT(*s)) {
53305cf1 3214 I32 flags = 0;
a3b680e6 3215 STRLEN numlen;
396482e1 3216 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3217 numlen = 3 + (*s == '0');
3218 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3219 s += numlen;
3220 }
3221 else {
8bfdd7d9 3222 if (RsPARA(PL_rs)) {
396482e1 3223 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3224 }
3225 else {
8bfdd7d9 3226 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3227 }
79072805
LW
3228 }
3229 return s;
1a30305b 3230 case 'M':
f20b2998 3231 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3232 /* FALL THROUGH */
3233 case 'm':
f20b2998 3234 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3235 if (*++s) {
c7030b81 3236 const char *start;
b64cb68c 3237 const char *end;
11343788 3238 SV *sv;
e1ec3a88 3239 const char *use = "use ";
0544e6df 3240 bool colon = FALSE;
a5f75d66 3241 /* -M-foo == 'no foo' */
d0043bd1
NC
3242 /* Leading space on " no " is deliberate, to make both
3243 possibilities the same length. */
3244 if (*s == '-') { use = " no "; ++s; }
3245 sv = newSVpvn(use,4);
a5f75d66 3246 start = s;
1a30305b 3247 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3248 while(isALNUM(*s) || *s==':') {
3249 if( *s++ == ':' ) {
3250 if( *s == ':' )
3251 s++;
3252 else
3253 colon = TRUE;
3254 }
3255 }
3256 if (s == start)
3257 Perl_croak(aTHX_ "Module name required with -%c option",
3258 option);
3259 if (colon)
3260 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3261 "contains single ':'",
63da6837 3262 (int)(s - start), start, option);
b64cb68c 3263 end = s + strlen(s);
c07a80fd 3264 if (*s != '=') {
b64cb68c 3265 sv_catpvn(sv, start, end - start);
0544e6df 3266 if (option == 'm') {
c07a80fd 3267 if (*s != '\0')
cea2e8a9 3268 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3269 sv_catpvs( sv, " ()");
c07a80fd
PP
3270 }
3271 } else {
11343788 3272 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3273 /* Use NUL as q''-delimiter. */
3274 sv_catpvs(sv, " split(/,/,q\0");
3275 ++s;
3276 sv_catpvn(sv, s, end - s);
396482e1 3277 sv_catpvs(sv, "\0)");
c07a80fd 3278 }
b64cb68c 3279 s = end;
29a861e7 3280 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3281 }
3282 else
0544e6df 3283 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3284 return s;
79072805 3285 case 'n':
3280af22 3286 PL_minus_n = TRUE;
79072805
LW
3287 s++;
3288 return s;
3289 case 'p':
3280af22 3290 PL_minus_p = TRUE;
79072805
LW
3291 s++;
3292 return s;
3293 case 's':
f20b2998 3294 forbid_setid('s', FALSE);
3280af22 3295 PL_doswitches = TRUE;
79072805
LW
3296 s++;
3297 return s;
6537fe72 3298 case 't':
27a6968b 3299 case 'T':
6537fe72 3300 if (!PL_tainting)
27a6968b 3301 TOO_LATE_FOR(*s);
6537fe72 3302 s++;
463ee0b2 3303 return s;
79072805 3304 case 'u':
3280af22 3305 PL_do_undump = TRUE;
79072805
LW
3306 s++;
3307 return s;
3308 case 'U':
3280af22 3309 PL_unsafe = TRUE;
79072805
LW
3310 s++;
3311 return s;
3312 case 'v':
c4bc78d9
NC
3313 minus_v();
3314 case 'w':
3315 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3316 PL_dowarn |= G_WARN_ON;
3317 }
3318 s++;
3319 return s;
3320 case 'W':
3321 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3322 if (!specialWARN(PL_compiling.cop_warnings))
3323 PerlMemShared_free(PL_compiling.cop_warnings);
3324 PL_compiling.cop_warnings = pWARN_ALL ;
3325 s++;
3326 return s;
3327 case 'X':
3328 PL_dowarn = G_WARN_ALL_OFF;
3329 if (!specialWARN(PL_compiling.cop_warnings))
3330 PerlMemShared_free(PL_compiling.cop_warnings);
3331 PL_compiling.cop_warnings = pWARN_NONE ;
3332 s++;
3333 return s;
3334 case '*':
3335 case ' ':
3336 while( *s == ' ' )
3337 ++s;
3338 if (s[0] == '-') /* Additional switches on #! line. */
3339 return s+1;
3340 break;
3341 case '-':
3342 case 0:
3343#if defined(WIN32) || !defined(PERL_STRICT_CR)
3344 case '\r':
3345#endif
3346 case '\n':
3347 case '\t':
3348 break;
3349#ifdef ALTERNATE_SHEBANG
3350 case 'S': /* OS/2 needs -S on "extproc" line. */
3351 break;
3352#endif
4bb78d63
CB
3353 case 'e': case 'f': case 'x': case 'E':
3354#ifndef ALTERNATE_SHEBANG
3355 case 'S':
3356#endif
3357 case 'V':
c4bc78d9 3358 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3359 default:
3360 Perl_croak(aTHX_
3361 "Unrecognized switch: -%.1s (-h will show valid options)",s
3362 );
c4bc78d9
NC
3363 }
3364 return NULL;
3365}
3366
3367
3368STATIC void
3369S_minus_v(pTHX)
3370{
d7aa5382 3371 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3372 upg_version(PL_patchlevel, TRUE);
8e9464f1 3373#if !defined(DGUX)
46807d8e
YO
3374 {
3375 SV* level= vstringify(PL_patchlevel);
3376#ifdef PERL_PATCHNUM
23d483e2
NC
3377# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3378 SV *num = newSVpvs(PERL_PATCHNUM "*");
3379# else
3380 SV *num = newSVpvs(PERL_PATCHNUM);
3381# endif
46807d8e
YO
3382
3383 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3384 SvREFCNT_dec(level);
3385 level= num;
3386 } else {
d0a9311f 3387 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3388 SvREFCNT_dec(num);
3389 }
3390 #endif
3391 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3392 "\nThis is perl " STRINGIFY(PERL_REVISION)
3393 ", version " STRINGIFY(PERL_VERSION)
3394 ", subversion " STRINGIFY(PERL_SUBVERSION)
3395 " (%"SVf") built for " ARCHNAME, level
3396 );
46807d8e
YO
3397 SvREFCNT_dec(level);
3398 }
8e9464f1
JH
3399#else /* DGUX */
3400/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3401 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3402 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3403 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3404 PerlIO_printf(PerlIO_stdout(),
3405 Perl_form(aTHX_ " built under %s at %s %s\n",
3406 OSNAME, __DATE__, __TIME__));
3407 PerlIO_printf(PerlIO_stdout(),
3408 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3409 OSVERS));
8e9464f1 3410#endif /* !DGUX */
fb73857a
PP
3411#if defined(LOCAL_PATCH_COUNT)
3412 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3413 PerlIO_printf(PerlIO_stdout(),
3414 "\n(with %d registered patch%s, "
3415 "see perl -V for more detail)",
bb7a0f54 3416 LOCAL_PATCH_COUNT,
b0e47665 3417 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3418#endif
1a30305b 3419
b0e47665 3420 PerlIO_printf(PerlIO_stdout(),
fdfb76e4 3421 "\n\nCopyright 1987-2012, Larry Wall\n");
79072805 3422#ifdef MSDOS
b0e47665
GS
3423 PerlIO_printf(PerlIO_stdout(),
3424 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3425#endif
3426#ifdef DJGPP
b0e47665
GS
3427 PerlIO_printf(PerlIO_stdout(),
3428 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3429 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3430#endif
79072805 3431#ifdef OS2
b0e47665
GS
3432 PerlIO_printf(PerlIO_stdout(),
3433 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3434 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3435#endif
a3f9223b 3436#ifdef __BEOS__
b0e47665
GS
3437 PerlIO_printf(PerlIO_stdout(),
3438 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3439#endif
1d84e8df 3440#ifdef MPE
b0e47665 3441 PerlIO_printf(PerlIO_stdout(),
e583a879 3442 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3443#endif
9d116dd7 3444#ifdef OEMVS
b0e47665
GS
3445 PerlIO_printf(PerlIO_stdout(),
3446 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3447#endif
495c5fdc 3448#ifdef __VOS__
b0e47665 3449 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3450 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3451#endif
092bebab 3452#ifdef __OPEN_VM
b0e47665
GS
3453 PerlIO_printf(PerlIO_stdout(),
3454 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3455#endif
a1a0e61e 3456#ifdef POSIX_BC
b0e47665
GS
3457 PerlIO_printf(PerlIO_stdout(),
3458 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3459#endif
f83d2536 3460#ifdef EPOC
b0e47665 3461 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3462 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3463#endif
e1caacb4 3464#ifdef UNDER_CE
b475b3e6
JH
3465 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3466 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3467 wce_hitreturn();
3468#endif
a0fd4948 3469#ifdef __SYMBIAN32__
27da23d5
JH
3470 PerlIO_printf(PerlIO_stdout(),
3471 "Symbian port by Nokia, 2004-2005\n");
3472#endif
baed7233
DL
3473#ifdef BINARY_BUILD_NOTICE
3474 BINARY_BUILD_NOTICE;
3475#endif
b0e47665
GS
3476 PerlIO_printf(PerlIO_stdout(),
3477 "\n\
79072805 3478Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3479GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3480Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3481this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3482Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3483 my_exit(0);
79072805
LW
3484}
3485
3486/* compliments of Tom Christiansen */
3487
3488/* unexec() can be found in the Gnu emacs distribution */
ee580363 3489/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805 3490
25bbd826
CB
3491#ifdef VMS
3492#include <lib$routines.h>
3493#endif
3494
79072805 3495void
864dbfa3 3496Perl_my_unexec(pTHX)
79072805 3497{
b37c2d43 3498 PERL_UNUSED_CONTEXT;
79072805 3499#ifdef UNEXEC
b37c2d43
AL
3500 SV * prog = newSVpv(BIN_EXP, 0);
3501 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3502 int status = 1;
79072805
LW
3503 extern int etext;
3504
396482e1 3505 sv_catpvs(prog, "/perl");
396482e1 3506 sv_catpvs(file, ".perldump");
79072805 3507
ee580363
GS
3508 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3509 /* unexec prints msg to stderr in case of failure */
6ad3d225 3510 PerlProc_exit(status);
79072805 3511#else
a5f75d66 3512# ifdef VMS
a5f75d66 3513 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3514# elif defined(WIN32) || defined(__CYGWIN__)
3515 Perl_croak(aTHX_ "dump is not supported");
aa689395 3516# else
790