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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
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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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DM
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
DM
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
GS
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;
36e77d41 525#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 526 {
9d4ba2ae
AL
527 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
528 if (s) {
36e77d41
DD
529 const int i = atoi(s);
530#ifdef DEBUGGING
531 if (destruct_level < i) destruct_level = i;
532#endif
533#ifdef PERL_TRACK_MEMPOOL
534 /* RT #114496, for perl_free */
535 PL_perl_destruct_level = i;
536#endif
5f05dabc 537 }
4633a7c4
LW
538 }
539#endif
540
27da23d5 541 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
542 dJMPENV;
543 int x = 0;
544
545 JMPENV_PUSH(x);
1b6737cc 546 PERL_UNUSED_VAR(x);
9ebf26ad 547 if (PL_endav && !PL_minus_c) {
ca7b837b 548 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 549 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 550 }
f3faeb53 551 JMPENV_POP;
26f423df 552 }
f3faeb53 553 LEAVE;
a0d0e21e 554 FREETMPS;
3d22c4f0 555 assert(PL_scopestack_ix == 0);
a0d0e21e 556
e00b64d4 557 /* Need to flush since END blocks can produce output */
f13a2bc0 558 my_fflush_all();
e00b64d4 559
16c91539 560 if (PL_threadhook(aTHX)) {
62375a60 561 /* Threads hook has vetoed further cleanup */
c301d606 562 PL_veto_cleanup = TRUE;
37038d91 563 return STATUS_EXIT;
62375a60
NIS
564 }
565
2aa47728
NC
566#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
567 if (destruct_level != 0) {
568 /* Fork here to create a child. Our child's job is to preserve the
569 state of scalars prior to destruction, so that we can instruct it
570 to dump any scalars that we later find have leaked.
571 There's no subtlety in this code - it assumes POSIX, and it doesn't
572 fail gracefully */
573 int fd[2];
574
575 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
576 perror("Debug leaking scalars socketpair failed");
577 abort();
578 }
579
580 child = fork();
581 if(child == -1) {
582 perror("Debug leaking scalars fork failed");
583 abort();
584 }
585 if (!child) {
586 /* We are the child */
3125a5a4
NC
587 const int sock = fd[1];
588 const int debug_fd = PerlIO_fileno(Perl_debug_log);
589 int f;
808ad2d0
NC
590 const char *where;
591 /* Our success message is an integer 0, and a char 0 */
b61433a9 592 static const char success[sizeof(int) + 1] = {0};
3125a5a4 593
2aa47728 594 close(fd[0]);
2aa47728 595
3125a5a4
NC
596 /* We need to close all other file descriptors otherwise we end up
597 with interesting hangs, where the parent closes its end of a
598 pipe, and sits waiting for (another) child to terminate. Only
599 that child never terminates, because it never gets EOF, because
bf357333
NC
600 we also have the far end of the pipe open. We even need to
601 close the debugging fd, because sometimes it happens to be one
602 end of a pipe, and a process is waiting on the other end for
603 EOF. Normally it would be closed at some point earlier in
604 destruction, but if we happen to cause the pipe to remain open,
605 EOF never occurs, and we get an infinite hang. Hence all the
606 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
607
608 f = sysconf(_SC_OPEN_MAX);
609 if(f < 0) {
808ad2d0
NC
610 where = "sysconf failed";
611 goto abort;
3125a5a4
NC
612 }
613 while (f--) {
614 if (f == sock)
615 continue;
3125a5a4
NC
616 close(f);
617 }
618
2aa47728
NC
619 while (1) {
620 SV *target;
bf357333
NC
621 union control_un control;
622 struct msghdr msg;
623 struct iovec vec[1];
624 struct cmsghdr *cmptr;
625 ssize_t got;
626 int got_fd;
627
628 msg.msg_control = control.control;
629 msg.msg_controllen = sizeof(control.control);
630 /* We're a connected socket so we don't need a source */
631 msg.msg_name = NULL;
632 msg.msg_namelen = 0;
633 msg.msg_iov = vec;
634 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
635
636 vec[0].iov_base = (void*)&target;
637 vec[0].iov_len = sizeof(target);
638
639 got = recvmsg(sock, &msg, 0);
2aa47728
NC
640
641 if(got == 0)
642 break;
643 if(got < 0) {
808ad2d0
NC
644 where = "recv failed";
645 goto abort;
2aa47728
NC
646 }
647 if(got < sizeof(target)) {
808ad2d0
NC
648 where = "short recv";
649 goto abort;
2aa47728 650 }
bf357333 651
808ad2d0
NC
652 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
653 where = "no cmsg";
654 goto abort;
655 }
656 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
657 where = "wrong cmsg_len";
658 goto abort;
659 }
660 if(cmptr->cmsg_level != SOL_SOCKET) {
661 where = "wrong cmsg_level";
662 goto abort;
663 }
664 if(cmptr->cmsg_type != SCM_RIGHTS) {
665 where = "wrong cmsg_type";
666 goto abort;
667 }
bf357333
NC
668
669 got_fd = *(int*)CMSG_DATA(cmptr);
670 /* For our last little bit of trickery, put the file descriptor
671 back into Perl_debug_log, as if we never actually closed it
672 */
808ad2d0
NC
673 if(got_fd != debug_fd) {
674 if (dup2(got_fd, debug_fd) == -1) {
675 where = "dup2";
676 goto abort;
677 }
678 }
2aa47728 679 sv_dump(target);
bf357333 680
2aa47728
NC
681 PerlIO_flush(Perl_debug_log);
682
808ad2d0 683 got = write(sock, &success, sizeof(success));
2aa47728
NC
684
685 if(got < 0) {
808ad2d0
NC
686 where = "write failed";
687 goto abort;
2aa47728 688 }
808ad2d0
NC
689 if(got < sizeof(success)) {
690 where = "short write";
691 goto abort;
2aa47728
NC
692 }
693 }
694 _exit(0);
808ad2d0
NC
695 abort:
696 {
697 int send_errno = errno;
698 unsigned char length = (unsigned char) strlen(where);
699 struct iovec failure[3] = {
700 {(void*)&send_errno, sizeof(send_errno)},
701 {&length, 1},
702 {(void*)where, length}
703 };
704 int got = writev(sock, failure, 3);
705 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
706 in the parent if we try to read from the socketpair after the
707 child has exited, even if there was data to read.
708 So sleep a bit to give the parent a fighting chance of
709 reading the data. */
710 sleep(2);
711 _exit((got == -1) ? errno : 0);
712 }
bf357333 713 /* End of child. */
2aa47728 714 }
41e4abd8 715 PL_dumper_fd = fd[0];
2aa47728
NC
716 close(fd[1]);
717 }
718#endif
719
ff0cee69
PP
720 /* We must account for everything. */
721
722 /* Destroy the main CV and syntax tree */
37e77c23
FC
723 /* Set PL_curcop now, because destroying ops can cause new SVs
724 to be generated in Perl_pad_swipe, and when running with
725 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
726 op from which the filename structure member is copied. */
17fbfdf6 727 PL_curcop = &PL_compiling;
3280af22 728 if (PL_main_root) {
4e380990
DM
729 /* ensure comppad/curpad to refer to main's pad */
730 if (CvPADLIST(PL_main_cv)) {
731 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
732 }
3280af22 733 op_free(PL_main_root);
5f66b61c 734 PL_main_root = NULL;
a0d0e21e 735 }
5f66b61c 736 PL_main_start = NULL;
aac9d523
DM
737 /* note that PL_main_cv isn't usually actually freed at this point,
738 * due to the CvOUTSIDE refs from subs compiled within it. It will
739 * get freed once all the subs are freed in sv_clean_all(), for
740 * destruct_level > 0 */
3280af22 741 SvREFCNT_dec(PL_main_cv);
601f1833 742 PL_main_cv = NULL;
ca7b837b 743 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 744
13621cfb
NIS
745 /* Tell PerlIO we are about to tear things apart in case
746 we have layers which are using resources that should
747 be cleaned up now.
748 */
749
750 PerlIO_destruct(aTHX);
751
3280af22 752 if (PL_sv_objcount) {
a0d0e21e
LW
753 /*
754 * Try to destruct global references. We do this first so that the
755 * destructors and destructees still exist. Some sv's might remain.
756 * Non-referenced objects are on their own.
757 */
a0d0e21e 758 sv_clean_objs();
bf9cdc68 759 PL_sv_objcount = 0;
8990e307
LW
760 }
761
5cd24f17 762 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 763 SvREFCNT_dec(PL_warnhook);
a0714e2c 764 PL_warnhook = NULL;
3280af22 765 SvREFCNT_dec(PL_diehook);
a0714e2c 766 PL_diehook = NULL;
5cd24f17 767
4b556e6c 768 /* call exit list functions */
3280af22 769 while (PL_exitlistlen-- > 0)
acfe0abc 770 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 771
3280af22 772 Safefree(PL_exitlist);
4b556e6c 773
1c4916e5
CB
774 PL_exitlist = NULL;
775 PL_exitlistlen = 0;
776
a3e6e81e
NC
777 SvREFCNT_dec(PL_registered_mros);
778
551a8b83 779 /* jettison our possibly duplicated environment */
4b647fb0
DM
780 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
781 * so we certainly shouldn't free it here
782 */
2f42fcb0 783#ifndef PERL_MICRO
4b647fb0 784#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 785 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
786#ifdef USE_ITHREADS
787 /* only main thread can free environ[0] contents */
788 && PL_curinterp == aTHX
789#endif
790 )
791 {
551a8b83
JH
792 I32 i;
793
794 for (i = 0; environ[i]; i++)
4b420006 795 safesysfree(environ[i]);
0631ea03 796
4b420006
JH
797 /* Must use safesysfree() when working with environ. */
798 safesysfree(environ);
551a8b83
JH
799
800 environ = PL_origenviron;
801 }
802#endif
2f42fcb0 803#endif /* !PERL_MICRO */
551a8b83 804
30985c42
JH
805 if (destruct_level == 0) {
806
807 DEBUG_P(debprofdump());
808
809#if defined(PERLIO_LAYERS)
810 /* No more IO - including error messages ! */
811 PerlIO_cleanup(aTHX);
812#endif
813
814 CopFILE_free(&PL_compiling);
30985c42
JH
815
816 /* The exit() function will do everything that needs doing. */
817 return STATUS_EXIT;
818 }
819
5f8cb046
DM
820#ifdef USE_ITHREADS
821 /* the syntax tree is shared between clones
822 * so op_free(PL_main_root) only ReREFCNT_dec's
823 * REGEXPs in the parent interpreter
824 * we need to manually ReREFCNT_dec for the clones
825 */
0547a729
DM
826 {
827 I32 i = AvFILLp(PL_regex_padav);
828 SV **ary = AvARRAY(PL_regex_padav);
829
830 for (; i; i--) {
831 SvREFCNT_dec(ary[i]);
832 ary[i] = &PL_sv_undef;
833 }
834 }
d4d03940 835 Safefree(PL_stashpad);
5f8cb046
DM
836#endif
837
0547a729 838
ad64d0ec 839 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
840 PL_stashcache = NULL;
841
5f05dabc
PP
842 /* loosen bonds of global variables */
843
2f9285f8
DM
844 /* XXX can PL_parser still be non-null here? */
845 if(PL_parser && PL_parser->rsfp) {
846 (void)PerlIO_close(PL_parser->rsfp);
847 PL_parser->rsfp = NULL;
8ebc5c01
PP
848 }
849
84386e14
RGS
850 if (PL_minus_F) {
851 Safefree(PL_splitstr);
852 PL_splitstr = NULL;
853 }
854
8ebc5c01 855 /* switches */
3280af22
NIS
856 PL_minus_n = FALSE;
857 PL_minus_p = FALSE;
858 PL_minus_l = FALSE;
859 PL_minus_a = FALSE;
860 PL_minus_F = FALSE;
861 PL_doswitches = FALSE;
599cee73 862 PL_dowarn = G_WARN_OFF;
d3b97530 863 PL_sawampersand = 0; /* must save all match strings */
3280af22
NIS
864 PL_unsafe = FALSE;
865
866 Safefree(PL_inplace);
bd61b366 867 PL_inplace = NULL;
a7cb1f99 868 SvREFCNT_dec(PL_patchlevel);
1e8125c6 869 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
870
871 if (PL_e_script) {
872 SvREFCNT_dec(PL_e_script);
a0714e2c 873 PL_e_script = NULL;
8ebc5c01
PP
874 }
875
bf9cdc68
RG
876 PL_perldb = 0;
877
8ebc5c01
PP
878 /* magical thingies */
879
e23d9e2f
CS
880 SvREFCNT_dec(PL_ofsgv); /* *, */
881 PL_ofsgv = NULL;
5f05dabc 882
7889fe52 883 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 884 PL_ors_sv = NULL;
8ebc5c01 885
3280af22 886 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 887 PL_rs = NULL;
dc92893f 888
d33b2eba 889 Safefree(PL_osname); /* $^O */
bd61b366 890 PL_osname = NULL;
5f05dabc 891
3280af22 892 SvREFCNT_dec(PL_statname);
a0714e2c
SS
893 PL_statname = NULL;
894 PL_statgv = NULL;
5f05dabc 895
8ebc5c01
PP
896 /* defgv, aka *_ should be taken care of elsewhere */
897
7d5ea4e7
GS
898 /* float buffer */
899 Safefree(PL_efloatbuf);
bd61b366 900 PL_efloatbuf = NULL;
7d5ea4e7
GS
901 PL_efloatsize = 0;
902
8ebc5c01 903 /* startup and shutdown function lists */
3280af22 904 SvREFCNT_dec(PL_beginav);
5a837c8f 905 SvREFCNT_dec(PL_beginav_save);
3280af22 906 SvREFCNT_dec(PL_endav);
7d30b5c4 907 SvREFCNT_dec(PL_checkav);
ece599bd 908 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
909 SvREFCNT_dec(PL_unitcheckav);
910 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 911 SvREFCNT_dec(PL_initav);
7d49f689
NC
912 PL_beginav = NULL;
913 PL_beginav_save = NULL;
914 PL_endav = NULL;
915 PL_checkav = NULL;
916 PL_checkav_save = NULL;
3c10abe3
AG
917 PL_unitcheckav = NULL;
918 PL_unitcheckav_save = NULL;
7d49f689 919 PL_initav = NULL;
5618dfe8 920
8ebc5c01 921 /* shortcuts just get cleared */
a0714e2c
SS
922 PL_envgv = NULL;
923 PL_incgv = NULL;
924 PL_hintgv = NULL;
925 PL_errgv = NULL;
926 PL_argvgv = NULL;
927 PL_argvoutgv = NULL;
928 PL_stdingv = NULL;
929 PL_stderrgv = NULL;
930 PL_last_in_gv = NULL;
931 PL_replgv = NULL;
932 PL_DBgv = NULL;
933 PL_DBline = NULL;
934 PL_DBsub = NULL;
935 PL_DBsingle = NULL;
936 PL_DBtrace = NULL;
937 PL_DBsignal = NULL;
601f1833 938 PL_DBcv = NULL;
7d49f689 939 PL_dbargs = NULL;
5c284bb0 940 PL_debstash = NULL;
8ebc5c01 941
7a1c5554 942 SvREFCNT_dec(PL_argvout_stack);
7d49f689 943 PL_argvout_stack = NULL;
8ebc5c01 944
5c831c24 945 SvREFCNT_dec(PL_modglobal);
5c284bb0 946 PL_modglobal = NULL;
5c831c24 947 SvREFCNT_dec(PL_preambleav);
7d49f689 948 PL_preambleav = NULL;
5c831c24 949 SvREFCNT_dec(PL_subname);
a0714e2c 950 PL_subname = NULL;
ca0c25f6 951#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 952 SvREFCNT_dec(PL_pidstatus);
5c284bb0 953 PL_pidstatus = NULL;
ca0c25f6 954#endif
5c831c24 955 SvREFCNT_dec(PL_toptarget);
a0714e2c 956 PL_toptarget = NULL;
5c831c24 957 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
958 PL_bodytarget = NULL;
959 PL_formtarget = NULL;
5c831c24 960
d33b2eba 961 /* free locale stuff */
b9582b6a 962#ifdef USE_LOCALE_COLLATE
d33b2eba 963 Safefree(PL_collation_name);
bd61b366 964 PL_collation_name = NULL;
b9582b6a 965#endif
d33b2eba 966
b9582b6a 967#ifdef USE_LOCALE_NUMERIC
d33b2eba 968 Safefree(PL_numeric_name);
bd61b366 969 PL_numeric_name = NULL;
a453c169 970 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 971 PL_numeric_radix_sv = NULL;
b9582b6a 972#endif
d33b2eba 973
5c831c24
GS
974 /* clear utf8 character classes */
975 SvREFCNT_dec(PL_utf8_alnum);
5c831c24 976 SvREFCNT_dec(PL_utf8_alpha);
bdd8600f 977 SvREFCNT_dec(PL_utf8_blank);
5c831c24 978 SvREFCNT_dec(PL_utf8_space);
5c831c24
GS
979 SvREFCNT_dec(PL_utf8_graph);
980 SvREFCNT_dec(PL_utf8_digit);
981 SvREFCNT_dec(PL_utf8_upper);
982 SvREFCNT_dec(PL_utf8_lower);
983 SvREFCNT_dec(PL_utf8_print);
984 SvREFCNT_dec(PL_utf8_punct);
985 SvREFCNT_dec(PL_utf8_xdigit);
986 SvREFCNT_dec(PL_utf8_mark);
987 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 988 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 989 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 990 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
991 SvREFCNT_dec(PL_utf8_idstart);
992 SvREFCNT_dec(PL_utf8_idcont);
2726813d 993 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 994 PL_utf8_alnum = NULL;
a0714e2c 995 PL_utf8_alpha = NULL;
bdd8600f 996 PL_utf8_blank = NULL;
a0714e2c 997 PL_utf8_space = NULL;
a0714e2c
SS
998 PL_utf8_graph = NULL;
999 PL_utf8_digit = NULL;
1000 PL_utf8_upper = NULL;
1001 PL_utf8_lower = NULL;
1002 PL_utf8_print = NULL;
1003 PL_utf8_punct = NULL;
1004 PL_utf8_xdigit = NULL;
1005 PL_utf8_mark = NULL;
1006 PL_utf8_toupper = NULL;
1007 PL_utf8_totitle = NULL;
1008 PL_utf8_tolower = NULL;
1009 PL_utf8_tofold = NULL;
1010 PL_utf8_idstart = NULL;
1011 PL_utf8_idcont = NULL;
2726813d 1012 PL_utf8_foldclosures = NULL;
5c831c24 1013
971a9dd3 1014 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1015 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1016 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1017 cophh_free(CopHINTHASH_get(&PL_compiling));
1018 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1019 CopFILE_free(&PL_compiling);
5c831c24 1020
a0d0e21e 1021 /* Prepare to destruct main symbol table. */
5f05dabc 1022
3280af22 1023 hv = PL_defstash;
ca556bcd
DM
1024 /* break ref loop *:: <=> %:: */
1025 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1026 PL_defstash = 0;
a0d0e21e 1027 SvREFCNT_dec(hv);
5c831c24 1028 SvREFCNT_dec(PL_curstname);
a0714e2c 1029 PL_curstname = NULL;
a0d0e21e 1030
5a844595
GS
1031 /* clear queued errors */
1032 SvREFCNT_dec(PL_errors);
a0714e2c 1033 PL_errors = NULL;
5a844595 1034
dd69841b
BB
1035 SvREFCNT_dec(PL_isarev);
1036
a0d0e21e 1037 FREETMPS;
9b387841 1038 if (destruct_level >= 2) {
3280af22 1039 if (PL_scopestack_ix != 0)
9b387841
NC
1040 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1041 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1042 (long)PL_scopestack_ix);
3280af22 1043 if (PL_savestack_ix != 0)
9b387841
NC
1044 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1045 "Unbalanced saves: %ld more saves than restores\n",
1046 (long)PL_savestack_ix);
3280af22 1047 if (PL_tmps_floor != -1)
9b387841
NC
1048 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1049 (long)PL_tmps_floor + 1);
a0d0e21e 1050 if (cxstack_ix != -1)
9b387841
NC
1051 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1052 (long)cxstack_ix + 1);
a0d0e21e 1053 }
8990e307 1054
0547a729
DM
1055#ifdef USE_ITHREADS
1056 SvREFCNT_dec(PL_regex_padav);
1057 PL_regex_padav = NULL;
1058 PL_regex_pad = NULL;
1059#endif
1060
776df701 1061#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1062 /* the entries in this list are allocated via SV PVX's, so get freed
1063 * in sv_clean_all */
1064 Safefree(PL_my_cxt_list);
776df701 1065#endif
57bb2458 1066
8990e307 1067 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1068
1069 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1070 while (sv_clean_all() > 2)
5226ed68
JH
1071 ;
1072
d4777f27
GS
1073 AvREAL_off(PL_fdpid); /* no surviving entries */
1074 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1075 PL_fdpid = NULL;
d33b2eba 1076
6c644e78
GS
1077#ifdef HAVE_INTERP_INTERN
1078 sys_intern_clear();
1079#endif
1080
6e72f9df
PP
1081 /* Destruct the global string table. */
1082 {
1083 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1084 * so that sv_free() won't fail on them.
80459961
NC
1085 * Now that the global string table is using a single hunk of memory
1086 * for both HE and HEK, we either need to explicitly unshare it the
1087 * correct way, or actually free things here.
6e72f9df 1088 */
80459961
NC
1089 I32 riter = 0;
1090 const I32 max = HvMAX(PL_strtab);
c4420975 1091 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1092 HE *hent = array[0];
1093
6e72f9df 1094 for (;;) {
0453d815 1095 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1096 HE * const next = HeNEXT(hent);
9014280d 1097 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1098 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1099 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1100 Safefree(hent);
1101 hent = next;
6e72f9df
PP
1102 }
1103 if (!hent) {
1104 if (++riter > max)
1105 break;
1106 hent = array[riter];
1107 }
1108 }
80459961
NC
1109
1110 Safefree(array);
1111 HvARRAY(PL_strtab) = 0;
1112 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1113 }
3280af22 1114 SvREFCNT_dec(PL_strtab);
6e72f9df 1115
e652bb2f 1116#ifdef USE_ITHREADS
c21d1a0f 1117 /* free the pointer tables used for cloning */
a0739874 1118 ptr_table_free(PL_ptr_table);
bf9cdc68 1119 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1120#endif
a0739874 1121
d33b2eba
GS
1122 /* free special SVs */
1123
1124 SvREFCNT(&PL_sv_yes) = 0;
1125 sv_clear(&PL_sv_yes);
1126 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1127 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1128
1129 SvREFCNT(&PL_sv_no) = 0;
1130 sv_clear(&PL_sv_no);
1131 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1132 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1133
9f375a43
DM
1134 {
1135 int i;
1136 for (i=0; i<=2; i++) {
1137 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1138 sv_clear(PERL_DEBUG_PAD(i));
1139 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1140 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1141 }
1142 }
1143
0453d815 1144 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1145 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1146
eba0f806
DM
1147#ifdef DEBUG_LEAKING_SCALARS
1148 if (PL_sv_count != 0) {
1149 SV* sva;
1150 SV* sv;
eb578fdb 1151 SV* svend;
eba0f806 1152
ad64d0ec 1153 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1154 svend = &sva[SvREFCNT(sva)];
1155 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1156 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1157 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1158 " flags=0x%"UVxf
fd0854ff 1159 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1160 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1161 "serial %"UVuf"\n",
574b8821
NC
1162 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1163 pTHX__VALUE,
fd0854ff
DM
1164 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1165 sv->sv_debug_line,
1166 sv->sv_debug_inpad ? "for" : "by",
1167 sv->sv_debug_optype ?
1168 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1169 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1170 sv->sv_debug_serial
fd0854ff 1171 );
2aa47728 1172#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1173 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1174#endif
eba0f806
DM
1175 }
1176 }
1177 }
1178 }
2aa47728
NC
1179#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1180 {
1181 int status;
1182 fd_set rset;
1183 /* Wait for up to 4 seconds for child to terminate.
1184 This seems to be the least effort way of timing out on reaping
1185 its exit status. */
1186 struct timeval waitfor = {4, 0};
41e4abd8 1187 int sock = PL_dumper_fd;
2aa47728
NC
1188
1189 shutdown(sock, 1);
1190 FD_ZERO(&rset);
1191 FD_SET(sock, &rset);
1192 select(sock + 1, &rset, NULL, NULL, &waitfor);
1193 waitpid(child, &status, WNOHANG);
1194 close(sock);
1195 }
1196#endif
eba0f806 1197#endif
77abb4c6
NC
1198#ifdef DEBUG_LEAKING_SCALARS_ABORT
1199 if (PL_sv_count)
1200 abort();
1201#endif
bf9cdc68 1202 PL_sv_count = 0;
eba0f806 1203
56a2bab7 1204#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1205 /* No more IO - including error messages ! */
1206 PerlIO_cleanup(aTHX);
1207#endif
1208
9f4bd222 1209 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1210 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1211 for no arg - and will try and SvREFCNT_dec it.
1212 */
1213 SvREFCNT(&PL_sv_undef) = 0;
1214 SvREADONLY_off(&PL_sv_undef);
1215
3280af22 1216 Safefree(PL_origfilename);
bd61b366 1217 PL_origfilename = NULL;
43c5f42d 1218 Safefree(PL_reg_curpm);
82ba1be6 1219 Safefree(PL_reg_poscache);
dd28f7bb 1220 free_tied_hv_pool();
3280af22 1221 Safefree(PL_op_mask);
cf36064f 1222 Safefree(PL_psig_name);
bf9cdc68 1223 PL_psig_name = (SV**)NULL;
d525a7b2 1224 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1225 {
1226 /* We need to NULL PL_psig_pend first, so that
1227 signal handlers know not to use it */
1228 int *psig_save = PL_psig_pend;
1229 PL_psig_pend = (int*)NULL;
1230 Safefree(psig_save);
1231 }
6e72f9df 1232 nuke_stacks();
284167a5
SM
1233 TAINTING_set(FALSE);
1234 TAINT_WARN_set(FALSE);
3280af22 1235 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1236 PL_debug = 0;
ac27b0f5 1237
a0d0e21e 1238 DEBUG_P(debprofdump());
d33b2eba 1239
e5dd39fc 1240#ifdef USE_REENTRANT_API
10bc17b6 1241 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1242#endif
1243
612f20c3
GS
1244 sv_free_arenas();
1245
5d9a96ca
DM
1246 while (PL_regmatch_slab) {
1247 regmatch_slab *s = PL_regmatch_slab;
1248 PL_regmatch_slab = PL_regmatch_slab->next;
1249 Safefree(s);
1250 }
1251
fc36a67e
PP
1252 /* As the absolutely last thing, free the non-arena SV for mess() */
1253
3280af22 1254 if (PL_mess_sv) {
f350b448
NC
1255 /* we know that type == SVt_PVMG */
1256
9c63abab 1257 /* it could have accumulated taint magic */
f350b448
NC
1258 MAGIC* mg;
1259 MAGIC* moremagic;
1260 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1261 moremagic = mg->mg_moremagic;
1262 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1263 && mg->mg_len >= 0)
1264 Safefree(mg->mg_ptr);
1265 Safefree(mg);
9c63abab 1266 }
f350b448 1267
fc36a67e 1268 /* we know that type >= SVt_PV */
8bd4d4c5 1269 SvPV_free(PL_mess_sv);
3280af22
NIS
1270 Safefree(SvANY(PL_mess_sv));
1271 Safefree(PL_mess_sv);
a0714e2c 1272 PL_mess_sv = NULL;
fc36a67e 1273 }
37038d91 1274 return STATUS_EXIT;
79072805
LW
1275}
1276
954c1994
GS
1277/*
1278=for apidoc perl_free
1279
1280Releases a Perl interpreter. See L<perlembed>.
1281
1282=cut
1283*/
1284
79072805 1285void
0cb96387 1286perl_free(pTHXx)
79072805 1287{
5174512c
NC
1288 dVAR;
1289
7918f24d
NC
1290 PERL_ARGS_ASSERT_PERL_FREE;
1291
c301d606
DM
1292 if (PL_veto_cleanup)
1293 return;
1294
7cb608b5 1295#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1296 {
1297 /*
1298 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1299 * value as we're probably hunting memory leaks then
1300 */
36e77d41 1301 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1302 const U32 old_debug = PL_debug;
55ef9aae
MHM
1303 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1304 thread at thread exit. */
4fd0a9b8
NC
1305 if (DEBUG_m_TEST) {
1306 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1307 "free this thread's memory\n");
1308 PL_debug &= ~ DEBUG_m_FLAG;
1309 }
55ef9aae
MHM
1310 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1311 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1312 PL_debug = old_debug;
55ef9aae
MHM
1313 }
1314 }
7cb608b5
NC
1315#endif
1316
acfe0abc 1317#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1318# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1319 {
acfe0abc 1320# ifdef NETWARE
7af12a34 1321 void *host = nw_internal_host;
acfe0abc 1322# else
7af12a34 1323 void *host = w32_internal_host;
acfe0abc 1324# endif
7af12a34 1325 PerlMem_free(aTHXx);
acfe0abc 1326# ifdef NETWARE
7af12a34 1327 nw_delete_internal_host(host);
acfe0abc 1328# else
7af12a34 1329 win32_delete_internal_host(host);
acfe0abc 1330# endif
7af12a34 1331 }
1c0ca838
GS
1332# else
1333 PerlMem_free(aTHXx);
1334# endif
acfe0abc
GS
1335#else
1336 PerlMem_free(aTHXx);
76e3520e 1337#endif
79072805
LW
1338}
1339
b7f7fff6 1340#if defined(USE_ITHREADS)
aebd1ac7
GA
1341/* provide destructors to clean up the thread key when libperl is unloaded */
1342#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1343
826955bd 1344#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1345#pragma fini "perl_fini"
666ad1ec
GA
1346#elif defined(__sun) && !defined(__GNUC__)
1347#pragma fini (perl_fini)
aebd1ac7
GA
1348#endif
1349
0dbb1585
AL
1350static void
1351#if defined(__GNUC__)
1352__attribute__((destructor))
aebd1ac7 1353#endif
de009b76 1354perl_fini(void)
aebd1ac7 1355{
27da23d5 1356 dVAR;
c301d606 1357 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1358 FREE_THREAD_KEY;
1359}
1360
1361#endif /* WIN32 */
1362#endif /* THREADS */
1363
4b556e6c 1364void
864dbfa3 1365Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1366{
97aff369 1367 dVAR;
3280af22
NIS
1368 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1369 PL_exitlist[PL_exitlistlen].fn = fn;
1370 PL_exitlist[PL_exitlistlen].ptr = ptr;
1371 ++PL_exitlistlen;
4b556e6c
JD
1372}
1373
b7975bdd
NC
1374STATIC void
1375S_set_caret_X(pTHX) {
97aff369 1376 dVAR;
fafc274c 1377 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1378 if (tmpgv) {
0f1723e1 1379 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1380#if defined(OS2)
1381 sv_setpv(caret_x, os2_execname(aTHX));
1382#else
2982a345
NC
1383# ifdef USE_KERN_PROC_PATHNAME
1384 size_t size = 0;
1385 int mib[4];
1386 mib[0] = CTL_KERN;
1387 mib[1] = KERN_PROC;
1388 mib[2] = KERN_PROC_PATHNAME;
1389 mib[3] = -1;
1390
1391 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1392 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1393 sv_grow(caret_x, size);
1394
1395 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1396 && size > 2) {
1397 SvPOK_only(caret_x);
1398 SvCUR_set(caret_x, size - 1);
1399 SvTAINT(caret_x);
1400 return;
1401 }
1402 }
ae60cb46
NC
1403# elif defined(USE_NSGETEXECUTABLEPATH)
1404 char buf[1];
1405 uint32_t size = sizeof(buf);
ae60cb46
NC
1406
1407 _NSGetExecutablePath(buf, &size);
1408 if (size < MAXPATHLEN * MAXPATHLEN) {
1409 sv_grow(caret_x, size);
1410 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1411 char *const tidied = realpath(SvPVX(caret_x), NULL);
1412 if (tidied) {
1413 sv_setpv(caret_x, tidied);
1414 free(tidied);
1415 } else {
1416 SvPOK_only(caret_x);
1417 SvCUR_set(caret_x, size);
1418 }
1419 return;
1420 }
1421 }
2982a345 1422# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1423 char buf[MAXPATHLEN];
1424 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1425
1426 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1427 includes a spurious NUL which will cause $^X to fail in system
1428 or backticks (this will prevent extensions from being built and
1429 many tests from working). readlink is not meant to add a NUL.
1430 Normal readlink works fine.
1431 */
1432 if (len > 0 && buf[len-1] == '\0') {
1433 len--;
1434 }
1435
1436 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1437 returning the text "unknown" from the readlink rather than the path
1438 to the executable (or returning an error from the readlink). Any
1439 valid path has a '/' in it somewhere, so use that to validate the
1440 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1441 */
1442 if (len > 0 && memchr(buf, '/', len)) {
1443 sv_setpvn(caret_x, buf, len);
82552a95 1444 return;
700dd4f8 1445 }
82552a95
NC
1446# endif
1447 /* Fallback to this: */
0f1723e1 1448 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1449#endif
b7975bdd
NC
1450 }
1451}
1452
954c1994
GS
1453/*
1454=for apidoc perl_parse
1455
1456Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1457
1458=cut
1459*/
1460
03d9f026
FC
1461#define SET_CURSTASH(newstash) \
1462 if (PL_curstash != newstash) { \
1463 SvREFCNT_dec(PL_curstash); \
1464 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1465 }
1466
79072805 1467int
0cb96387 1468perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1469{
27da23d5 1470 dVAR;
6224f72b 1471 I32 oldscope;
6224f72b 1472 int ret;
db36c5a1 1473 dJMPENV;
8d063cd8 1474
7918f24d
NC
1475 PERL_ARGS_ASSERT_PERL_PARSE;
1476#ifndef MULTIPLICITY
ed6c66dd 1477 PERL_UNUSED_ARG(my_perl);
7918f24d 1478#endif
9d4ba2ae 1479
b0891165
JH
1480#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1481 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1482 * This MUST be done before any hash stores or fetches take place.
486ec47a 1483 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1484 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1485 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1486 if (!PL_rehash_seed_set)
1487 PL_rehash_seed = get_hash_seed();
b0891165 1488 {
9d4ba2ae 1489 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1490
1b6737cc
AL
1491 if (s && (atoi(s) == 1))
1492 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1493 }
1494#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1495
3280af22 1496 PL_origargc = argc;
e2975953 1497 PL_origargv = argv;
a0d0e21e 1498
a2722ac9
GA
1499 if (PL_origalen != 0) {
1500 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1501 }
1502 else {
3cb9023d
JH
1503 /* Set PL_origalen be the sum of the contiguous argv[]
1504 * elements plus the size of the env in case that it is
e9137a8e 1505 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1506 * as the maximum modifiable length of $0. In the worst case
1507 * the area we are able to modify is limited to the size of
43c32782 1508 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1509 * --jhi */
e1ec3a88 1510 const char *s = NULL;
54bfe034 1511 int i;
1b6737cc 1512 const UV mask =
7d8e7db3 1513 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1514 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1515 const UV aligned =
43c32782
JH
1516 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1517
1518 /* See if all the arguments are contiguous in memory. Note
1519 * that 'contiguous' is a loose term because some platforms
1520 * align the argv[] and the envp[]. If the arguments look
1521 * like non-aligned, assume that they are 'strictly' or
1522 * 'traditionally' contiguous. If the arguments look like
1523 * aligned, we just check that they are within aligned
1524 * PTRSIZE bytes. As long as no system has something bizarre
1525 * like the argv[] interleaved with some other data, we are
1526 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1527 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1528 while (*s) s++;
1529 for (i = 1; i < PL_origargc; i++) {
1530 if ((PL_origargv[i] == s + 1
43c32782 1531#ifdef OS2
c8941eeb 1532 || PL_origargv[i] == s + 2
43c32782 1533#endif
c8941eeb
JH
1534 )
1535 ||
1536 (aligned &&
1537 (PL_origargv[i] > s &&
1538 PL_origargv[i] <=
1539 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1540 )
1541 {
1542 s = PL_origargv[i];
1543 while (*s) s++;
1544 }
1545 else
1546 break;
54bfe034 1547 }
54bfe034 1548 }
a4a109c2
JD
1549
1550#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1551 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1552 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1553 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1554 ||
1555 (aligned &&
1556 (PL_origenviron[0] > s &&
1557 PL_origenviron[0] <=
1558 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1559 )
1560 {
9d419b5f 1561#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1562 s = PL_origenviron[0];
1563 while (*s) s++;
1564#endif
bd61b366 1565 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1566 /* Force copy of environment. */
1567 for (i = 1; PL_origenviron[i]; i++) {
1568 if (PL_origenviron[i] == s + 1
1569 ||
1570 (aligned &&
1571 (PL_origenviron[i] > s &&
1572 PL_origenviron[i] <=
1573 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1574 )
1575 {
1576 s = PL_origenviron[i];
1577 while (*s) s++;
1578 }
1579 else
1580 break;
54bfe034 1581 }
43c32782 1582 }
54bfe034 1583 }
a4a109c2
JD
1584#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1585
2d2af554 1586 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1587 }
1588
3280af22 1589 if (PL_do_undump) {
a0d0e21e
LW
1590
1591 /* Come here if running an undumped a.out. */
1592
3280af22
NIS
1593 PL_origfilename = savepv(argv[0]);
1594 PL_do_undump = FALSE;
a0d0e21e 1595 cxstack_ix = -1; /* start label stack again */
748a9306 1596 init_ids();
284167a5 1597 assert (!TAINT_get);
b7975bdd
NC
1598 TAINT;
1599 S_set_caret_X(aTHX);
1600 TAINT_NOT;
a0d0e21e
LW
1601 init_postdump_symbols(argc,argv,env);
1602 return 0;
1603 }
1604
3280af22 1605 if (PL_main_root) {
3280af22 1606 op_free(PL_main_root);
5f66b61c 1607 PL_main_root = NULL;
ff0cee69 1608 }
5f66b61c 1609 PL_main_start = NULL;
3280af22 1610 SvREFCNT_dec(PL_main_cv);
601f1833 1611 PL_main_cv = NULL;
79072805 1612
3280af22
NIS
1613 time(&PL_basetime);
1614 oldscope = PL_scopestack_ix;
599cee73 1615 PL_dowarn = G_WARN_OFF;
f86702cc 1616
14dd3ad8 1617 JMPENV_PUSH(ret);
6224f72b 1618 switch (ret) {
312caa8e 1619 case 0:
14dd3ad8 1620 parse_body(env,xsinit);
9ebf26ad 1621 if (PL_unitcheckav) {
3c10abe3 1622 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1623 }
1624 if (PL_checkav) {
ca7b837b 1625 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1626 call_list(oldscope, PL_checkav);
9ebf26ad 1627 }
14dd3ad8
GS
1628 ret = 0;
1629 break;
6224f72b
GS
1630 case 1:
1631 STATUS_ALL_FAILURE;
1632 /* FALL THROUGH */
1633 case 2:
1634 /* my_exit() was called */
3280af22 1635 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1636 LEAVE;
1637 FREETMPS;
03d9f026 1638 SET_CURSTASH(PL_defstash);
9ebf26ad 1639 if (PL_unitcheckav) {
3c10abe3 1640 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1641 }
1642 if (PL_checkav) {
ca7b837b 1643 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1644 call_list(oldscope, PL_checkav);
9ebf26ad 1645 }
37038d91 1646 ret = STATUS_EXIT;
14dd3ad8 1647 break;
6224f72b 1648 case 3:
bf49b057 1649 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1650 ret = 1;
1651 break;
6224f72b 1652 }
14dd3ad8
GS
1653 JMPENV_POP;
1654 return ret;
1655}
1656
4a5df386
NC
1657/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1658 miniperl, and we need to see those flags reflected in the values here. */
1659
1660/* What this returns is subject to change. Use the public interface in Config.
1661 */
1662static void
1663S_Internals_V(pTHX_ CV *cv)
1664{
1665 dXSARGS;
1666#ifdef LOCAL_PATCH_COUNT
1667 const int local_patch_count = LOCAL_PATCH_COUNT;
1668#else
1669 const int local_patch_count = 0;
1670#endif
2dc296d2 1671 const int entries = 3 + local_patch_count;
4a5df386 1672 int i;
fe1c5936 1673 static const char non_bincompat_options[] =
4a5df386
NC
1674# ifdef DEBUGGING
1675 " DEBUGGING"
1676# endif
1677# ifdef NO_MATHOMS
0d311fbe 1678 " NO_MATHOMS"
4a5df386
NC
1679# endif
1680# ifdef PERL_DISABLE_PMC
1681 " PERL_DISABLE_PMC"
1682# endif
1683# ifdef PERL_DONT_CREATE_GVSV
1684 " PERL_DONT_CREATE_GVSV"
1685# endif
9a044a43
NC
1686# ifdef PERL_EXTERNAL_GLOB
1687 " PERL_EXTERNAL_GLOB"
1688# endif
4a5df386
NC
1689# ifdef PERL_IS_MINIPERL
1690 " PERL_IS_MINIPERL"
1691# endif
1692# ifdef PERL_MALLOC_WRAP
1693 " PERL_MALLOC_WRAP"
1694# endif
1695# ifdef PERL_MEM_LOG
1696 " PERL_MEM_LOG"
1697# endif
1698# ifdef PERL_MEM_LOG_NOIMPL
1699 " PERL_MEM_LOG_NOIMPL"
1700# endif
c3cf41ec
NC
1701# ifdef PERL_PRESERVE_IVUV
1702 " PERL_PRESERVE_IVUV"
1703# endif
c051e30b
NC
1704# ifdef PERL_RELOCATABLE_INCPUSH
1705 " PERL_RELOCATABLE_INCPUSH"
1706# endif
4a5df386
NC
1707# ifdef PERL_USE_DEVEL
1708 " PERL_USE_DEVEL"
1709# endif
1710# ifdef PERL_USE_SAFE_PUTENV
1711 " PERL_USE_SAFE_PUTENV"
1712# endif
a3749cf3
NC
1713# ifdef UNLINK_ALL_VERSIONS
1714 " UNLINK_ALL_VERSIONS"
1715# endif
de618ee4
NC
1716# ifdef USE_ATTRIBUTES_FOR_PERLIO
1717 " USE_ATTRIBUTES_FOR_PERLIO"
1718# endif
4a5df386
NC
1719# ifdef USE_FAST_STDIO
1720 " USE_FAST_STDIO"
1721# endif
98548bdf
NC
1722# ifdef USE_LOCALE
1723 " USE_LOCALE"
1724# endif
98548bdf
NC
1725# ifdef USE_LOCALE_CTYPE
1726 " USE_LOCALE_CTYPE"
1727# endif
5a8d8935
NC
1728# ifdef USE_PERL_ATOF
1729 " USE_PERL_ATOF"
1730# endif
0d311fbe
NC
1731# ifdef USE_SITECUSTOMIZE
1732 " USE_SITECUSTOMIZE"
1733# endif
4a5df386
NC
1734 ;
1735 PERL_UNUSED_ARG(cv);
1736 PERL_UNUSED_ARG(items);
1737
1738 EXTEND(SP, entries);
1739
1740 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1741 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1742 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1743
1744#ifdef __DATE__
1745# ifdef __TIME__
1746 PUSHs(Perl_newSVpvn_flags(aTHX_
1747 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1748 SVs_TEMP));
1749# else
1750 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1751 SVs_TEMP));
1752# endif
1753#else
1754 PUSHs(&PL_sv_undef);
1755#endif
1756
4a5df386
NC
1757 for (i = 1; i <= local_patch_count; i++) {
1758 /* This will be an undef, if PL_localpatches[i] is NULL. */
1759 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1760 }
1761
1762 XSRETURN(entries);
1763}
1764
be71fc8f
NC
1765#define INCPUSH_UNSHIFT 0x01
1766#define INCPUSH_ADD_OLD_VERS 0x02
1767#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1768#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1769#define INCPUSH_NOT_BASEDIR 0x10
1770#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1771#define INCPUSH_ADD_SUB_DIRS \
1772 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1773
312caa8e 1774STATIC void *
14dd3ad8 1775S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1776{
27da23d5 1777 dVAR;
2f9285f8 1778 PerlIO *rsfp;
312caa8e 1779 int argc = PL_origargc;
8f42b153 1780 char **argv = PL_origargv;
e1ec3a88 1781 const char *scriptname = NULL;
312caa8e 1782 VOL bool dosearch = FALSE;
eb578fdb 1783 char c;
737c24fc 1784 bool doextract = FALSE;
bd61b366 1785 const char *cddir = NULL;
ab019eaa 1786#ifdef USE_SITECUSTOMIZE
20ef40cf 1787 bool minus_f = FALSE;
ab019eaa 1788#endif
95670bde 1789 SV *linestr_sv = NULL;
5486870f 1790 bool add_read_e_script = FALSE;
87606032 1791 U32 lex_start_flags = 0;
009d90df 1792
ca7b837b 1793 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1794
6224f72b 1795 init_main_stash();
54310121 1796
c7030b81
NC
1797 {
1798 const char *s;
6224f72b
GS
1799 for (argc--,argv++; argc > 0; argc--,argv++) {
1800 if (argv[0][0] != '-' || !argv[0][1])
1801 break;
6224f72b
GS
1802 s = argv[0]+1;
1803 reswitch:
47f56822 1804 switch ((c = *s)) {
729a02f2 1805 case 'C':
1d5472a9
GS
1806#ifndef PERL_STRICT_CR
1807 case '\r':
1808#endif
6224f72b
GS
1809 case ' ':
1810 case '0':
1811 case 'F':
1812 case 'a':
1813 case 'c':
1814 case 'd':
1815 case 'D':
1816 case 'h':
1817 case 'i':
1818 case 'l':
1819 case 'M':
1820 case 'm':
1821 case 'n':
1822 case 'p':
1823 case 's':
1824 case 'u':
1825 case 'U':
1826 case 'v':
599cee73
PM
1827 case 'W':
1828 case 'X':
6224f72b 1829 case 'w':
97bd5664 1830 if ((s = moreswitches(s)))
6224f72b
GS
1831 goto reswitch;
1832 break;
33b78306 1833
1dbad523 1834 case 't':
284167a5
SM
1835#if SILENT_NO_TAINT_SUPPORT
1836 /* silently ignore */
1837#elif NO_TAINT_SUPPORT
1838 Perl_croak("This perl was compiled without taint support. "
1839 "Cowardly refusing to run with -t or -T flags");
1840#else
22f7c9c9 1841 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1842 if( !TAINTING_get ) {
1843 TAINT_WARN_set(TRUE);
1844 TAINTING_set(TRUE);
317ea90d 1845 }
284167a5 1846#endif
317ea90d
MS
1847 s++;
1848 goto reswitch;
6224f72b 1849 case 'T':
284167a5
SM
1850#if SILENT_NO_TAINT_SUPPORT
1851 /* silently ignore */
1852#elif NO_TAINT_SUPPORT
1853 Perl_croak("This perl was compiled without taint support. "
1854 "Cowardly refusing to run with -t or -T flags");
1855#else
22f7c9c9 1856 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1857 TAINTING_set(TRUE);
1858 TAINT_WARN_set(FALSE);
1859#endif
6224f72b
GS
1860 s++;
1861 goto reswitch;
f86702cc 1862
bc9b29db
RH
1863 case 'E':
1864 PL_minus_E = TRUE;
1865 /* FALL THROUGH */
6224f72b 1866 case 'e':
f20b2998 1867 forbid_setid('e', FALSE);
3280af22 1868 if (!PL_e_script) {
396482e1 1869 PL_e_script = newSVpvs("");
5486870f 1870 add_read_e_script = TRUE;
6224f72b
GS
1871 }
1872 if (*++s)
3280af22 1873 sv_catpv(PL_e_script, s);
6224f72b 1874 else if (argv[1]) {
3280af22 1875 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1876 argc--,argv++;
1877 }
1878 else
47f56822 1879 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1880 sv_catpvs(PL_e_script, "\n");
6224f72b 1881 break;
afe37c7d 1882
20ef40cf 1883 case 'f':
f5542d3a 1884#ifdef USE_SITECUSTOMIZE
20ef40cf 1885 minus_f = TRUE;
f5542d3a 1886#endif
20ef40cf
GA
1887 s++;
1888 goto reswitch;
1889
6224f72b 1890 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1891 forbid_setid('I', FALSE);
bd61b366 1892 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1893 argc--,argv++;
1894 }
6224f72b 1895 if (s && *s) {
0df16ed7 1896 STRLEN len = strlen(s);
55b4bc1c 1897 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1898 }
1899 else
a67e862a 1900 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1901 break;
6224f72b 1902 case 'S':
f20b2998 1903 forbid_setid('S', FALSE);
6224f72b
GS
1904 dosearch = TRUE;
1905 s++;
1906 goto reswitch;
1907 case 'V':
7edfd0ef
NC
1908 {
1909 SV *opts_prog;
1910
7edfd0ef 1911 if (*++s != ':') {
37ca4a5b 1912 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1913 }
1914 else {
1915 ++s;
1916 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1917 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1918 0, s, 0);
1919 s += strlen(s);
1920 }
37ca4a5b 1921 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1922 /* don't look for script or read stdin */
1923 scriptname = BIT_BUCKET;
1924 goto reswitch;
6224f72b 1925 }
6224f72b 1926 case 'x':
737c24fc 1927 doextract = TRUE;
6224f72b 1928 s++;
304334da 1929 if (*s)
f4c556ac 1930 cddir = s;
6224f72b
GS
1931 break;
1932 case 0:
1933 break;
1934 case '-':
1935 if (!*++s || isSPACE(*s)) {
1936 argc--,argv++;
1937 goto switch_end;
1938 }
ee8bc8b7
NC
1939 /* catch use of gnu style long options.
1940 Both of these exit immediately. */
1941 if (strEQ(s, "version"))
1942 minus_v();
1943 if (strEQ(s, "help"))
1944 usage();
6224f72b
GS
1945 s--;
1946 /* FALL THROUGH */
1947 default:
cea2e8a9 1948 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1949 }
1950 }
c7030b81
NC
1951 }
1952
6224f72b 1953 switch_end:
54310121 1954
c7030b81
NC
1955 {
1956 char *s;
1957
f675dbe5
CB
1958 if (
1959#ifndef SECURE_INTERNAL_GETENV
284167a5 1960 !TAINTING_get &&
f675dbe5 1961#endif
cf756827 1962 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1963 {
74288ac8
GS
1964 while (isSPACE(*s))
1965 s++;
317ea90d 1966 if (*s == '-' && *(s+1) == 'T') {
284167a5
SM
1967#if SILENT_NO_TAINT_SUPPORT
1968 /* silently ignore */
1969#elif NO_TAINT_SUPPORT
1970 Perl_croak("This perl was compiled without taint support. "
1971 "Cowardly refusing to run with -t or -T flags");
1972#else
22f7c9c9 1973 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1974 TAINTING_set(TRUE);
1975 TAINT_WARN_set(FALSE);
1976#endif
317ea90d 1977 }
74288ac8 1978 else {
bd61b366 1979 char *popt_copy = NULL;
74288ac8 1980 while (s && *s) {
54913509 1981 const char *d;
74288ac8
GS
1982 while (isSPACE(*s))
1983 s++;
1984 if (*s == '-') {
1985 s++;
1986 if (isSPACE(*s))
1987 continue;
1988 }
4ea8f8fb 1989 d = s;
74288ac8
GS
1990 if (!*s)
1991 break;
2b622f1a 1992 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1993 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1994 while (++s && *s) {
1995 if (isSPACE(*s)) {
cf756827 1996 if (!popt_copy) {
bfa6c418
NC
1997 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1998 s = popt_copy + (s - d);
1999 d = popt_copy;
cf756827 2000 }
4ea8f8fb
MS
2001 *s++ = '\0';
2002 break;
2003 }
2004 }
1c4db469 2005 if (*d == 't') {
284167a5
SM
2006#if SILENT_NO_TAINT_SUPPORT
2007 /* silently ignore */
2008#elif NO_TAINT_SUPPORT
2009 Perl_croak("This perl was compiled without taint support. "
2010 "Cowardly refusing to run with -t or -T flags");
2011#else
2012 if( !TAINTING_get) {
2013 TAINT_WARN_set(TRUE);
2014 TAINTING_set(TRUE);
317ea90d 2015 }
284167a5 2016#endif
1c4db469 2017 } else {
97bd5664 2018 moreswitches(d);
1c4db469 2019 }
6224f72b 2020 }
6224f72b
GS
2021 }
2022 }
c7030b81 2023 }
a0d0e21e 2024
c29067d7
CH
2025 /* Set $^X early so that it can be used for relocatable paths in @INC */
2026 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2027 assert (!TAINT_get);
c29067d7
CH
2028 TAINT;
2029 S_set_caret_X(aTHX);
2030 TAINT_NOT;
2031
43c0c913 2032#if defined(USE_SITECUSTOMIZE)
20ef40cf 2033 if (!minus_f) {
43c0c913 2034 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2035 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2036 ie a q() operator with a NUL byte as a the delimiter. This avoids
2037 problems with pathnames containing (say) ' */
43c0c913
NC
2038# ifdef PERL_IS_MINIPERL
2039 AV *const inc = GvAV(PL_incgv);
2040 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2041
2042 if (inc0) {
2043 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2044 Perl_newSVpvf(aTHX_
fc81b718
NC
2045 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2046 0, *inc0, 0,
2047 0, *inc0, 0));
43c0c913
NC
2048 }
2049# else
2050 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2051 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2052 if (raw_sitelib) {
2053 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2054 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2055 INCPUSH_CAN_RELOCATE);
2056 const char *const sitelib = SvPVX(sitelib_sv);
2057 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2058 Perl_newSVpvf(aTHX_
2059 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2060 0, sitelib, 0,
2061 0, sitelib, 0));
2062 assert (SvREFCNT(sitelib_sv) == 1);
2063 SvREFCNT_dec(sitelib_sv);
2064 }
43c0c913 2065# endif
20ef40cf
GA
2066 }
2067#endif
2068
6224f72b
GS
2069 if (!scriptname)
2070 scriptname = argv[0];
3280af22 2071 if (PL_e_script) {
6224f72b
GS
2072 argc++,argv--;
2073 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2074 }
bd61b366 2075 else if (scriptname == NULL) {
6224f72b
GS
2076#ifdef MSDOS
2077 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2078 moreswitches("h");
6224f72b
GS
2079#endif
2080 scriptname = "-";
2081 }
2082
284167a5 2083 assert (!TAINT_get);
2cace6ac 2084 init_perllib();
6224f72b 2085
a52eba0e 2086 {
f20b2998 2087 bool suidscript = FALSE;
829372d3 2088
8d113837 2089 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2090 if (!rsfp) {
2091 rsfp = PerlIO_stdin();
87606032 2092 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2093 }
6224f72b 2094
b24bc095 2095 validate_suid(rsfp);
6224f72b 2096
64ca3a65 2097#ifndef PERL_MICRO
a52eba0e
NC
2098# if defined(SIGCHLD) || defined(SIGCLD)
2099 {
2100# ifndef SIGCHLD
2101# define SIGCHLD SIGCLD
2102# endif
2103 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2104 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2105 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2106 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2107 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2108 }
0b5b802d 2109 }
a52eba0e 2110# endif
64ca3a65 2111#endif
0b5b802d 2112
737c24fc 2113 if (doextract) {
faef540c 2114
f20b2998 2115 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2116 setuid scripts. */
2117 forbid_setid('x', suidscript);
f20b2998 2118 /* Hence you can't get here if suidscript is true */
faef540c 2119
95670bde
NC
2120 linestr_sv = newSV_type(SVt_PV);
2121 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2122 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2123 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2124 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2125 }
f4c556ac 2126 }
6224f72b 2127
ea726b52 2128 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2129 CvUNIQUE_on(PL_compcv);
2130
dd2155a4 2131 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2132
dd69841b
BB
2133 PL_isarev = newHV();
2134
0c4f7ff0 2135 boot_core_PerlIO();
6224f72b 2136 boot_core_UNIVERSAL();
e1a479c5 2137 boot_core_mro();
4a5df386 2138 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2139
2140 if (xsinit)
acfe0abc 2141 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2142#ifndef PERL_MICRO
d0d72822 2143#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2144 init_os_extras();
6224f72b 2145#endif
64ca3a65 2146#endif
6224f72b 2147
29209bc5 2148#ifdef USE_SOCKS
1b9c9cf5
DH
2149# ifdef HAS_SOCKS5_INIT
2150 socks5_init(argv[0]);
2151# else
29209bc5 2152 SOCKSinit(argv[0]);
1b9c9cf5 2153# endif
ac27b0f5 2154#endif
29209bc5 2155
6224f72b
GS
2156 init_predump_symbols();
2157 /* init_postdump_symbols not currently designed to be called */
2158 /* more than once (ENV isn't cleared first, for example) */
2159 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2160 if (!PL_do_undump)
6224f72b
GS
2161 init_postdump_symbols(argc,argv,env);
2162
27da23d5
JH
2163 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2164 * or explicitly in some platforms.
085a54d9 2165 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2166 * look like the user wants to use UTF-8. */
a0fd4948 2167#if defined(__SYMBIAN32__)
27da23d5
JH
2168 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2169#endif
e27b5b51 2170# ifndef PERL_IS_MINIPERL
06e66572
JH
2171 if (PL_unicode) {
2172 /* Requires init_predump_symbols(). */
a05d7ebb 2173 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2174 IO* io;
2175 PerlIO* fp;
2176 SV* sv;
2177
a05d7ebb 2178 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2179 * and the default open disciplines. */
a05d7ebb
JH
2180 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2181 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2182 (fp = IoIFP(io)))
2183 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2184 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2185 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2186 (fp = IoOFP(io)))
2187 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2188 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2189 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2190 (fp = IoOFP(io)))
2191 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2192 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2193 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2194 SVt_PV)))) {
a05d7ebb
JH
2195 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2196 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2197 if (in) {
2198 if (out)
76f68e9b 2199 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2200 else
76f68e9b 2201 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2202 }
2203 else if (out)
76f68e9b 2204 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2205 SvSETMAGIC(sv);
2206 }
b310b053
JH
2207 }
2208 }
e27b5b51 2209#endif
b310b053 2210
c7030b81
NC
2211 {
2212 const char *s;
4ffa73a3
JH
2213 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2214 if (strEQ(s, "unsafe"))
2215 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2216 else if (strEQ(s, "safe"))
2217 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2218 else
2219 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2220 }
c7030b81 2221 }
4ffa73a3 2222
81d86705 2223#ifdef PERL_MAD
c7030b81
NC
2224 {
2225 const char *s;
284167a5 2226 if (!TAINTING_get &&
2cc12391 2227 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC
2228 PL_madskills = 1;
2229 PL_minus_c = 1;
2230 if (!s || !s[0])
2231 PL_xmlfp = PerlIO_stdout();
2232 else {
2233 PL_xmlfp = PerlIO_open(s, "w");
2234 if (!PL_xmlfp)
2235 Perl_croak(aTHX_ "Can't open %s", s);
2236 }
1a9a51d4 2237 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2238 }
c7030b81
NC
2239 }
2240
2241 {
2242 const char *s;
81d86705
NC
2243 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2244 PL_madskills = atoi(s);
1a9a51d4 2245 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2246 }
c7030b81 2247 }
81d86705
NC
2248#endif
2249
87606032 2250 lex_start(linestr_sv, rsfp, lex_start_flags);
95670bde
NC
2251 if(linestr_sv)
2252 SvREFCNT_dec(linestr_sv);
2253
219f7226 2254 PL_subname = newSVpvs("main");
6224f72b 2255
5486870f
DM
2256 if (add_read_e_script)
2257 filter_add(read_e_script, NULL);
2258
6224f72b
GS
2259 /* now parse the script */
2260
93189314 2261 SETERRNO(0,SS_NORMAL);
28ac2b49 2262 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2263 if (PL_minus_c)
cea2e8a9 2264 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2265 else {
cea2e8a9 2266 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2267 PL_origfilename);
6224f72b
GS
2268 }
2269 }
57843af0 2270 CopLINE_set(PL_curcop, 0);
03d9f026 2271 SET_CURSTASH(PL_defstash);
3280af22
NIS
2272 if (PL_e_script) {
2273 SvREFCNT_dec(PL_e_script);
a0714e2c 2274 PL_e_script = NULL;
6224f72b
GS
2275 }
2276
3280af22 2277 if (PL_do_undump)
6224f72b
GS
2278 my_unexec();
2279
57843af0
GS
2280 if (isWARN_ONCE) {
2281 SAVECOPFILE(PL_curcop);
2282 SAVECOPLINE(PL_curcop);
3280af22 2283 gv_check(PL_defstash);
57843af0 2284 }
6224f72b
GS
2285
2286 LEAVE;
2287 FREETMPS;
2288
2289#ifdef MYMALLOC
f6a607bc
RGS
2290 {
2291 const char *s;
6224f72b
GS
2292 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2293 dump_mstats("after compilation:");
f6a607bc 2294 }
6224f72b
GS
2295#endif
2296
2297 ENTER;
febb3a6d 2298 PL_restartjmpenv = NULL;
3280af22 2299 PL_restartop = 0;
312caa8e 2300 return NULL;
6224f72b
GS
2301}
2302
954c1994
GS
2303/*
2304=for apidoc perl_run
2305
2306Tells a Perl interpreter to run. See L<perlembed>.
2307
2308=cut
2309*/
2310
6224f72b 2311int
0cb96387 2312perl_run(pTHXx)
6224f72b 2313{
97aff369 2314 dVAR;
6224f72b 2315 I32 oldscope;
14dd3ad8 2316 int ret = 0;
db36c5a1 2317 dJMPENV;
6224f72b 2318
7918f24d
NC
2319 PERL_ARGS_ASSERT_PERL_RUN;
2320#ifndef MULTIPLICITY
ed6c66dd 2321 PERL_UNUSED_ARG(my_perl);
7918f24d 2322#endif
9d4ba2ae 2323
3280af22 2324 oldscope = PL_scopestack_ix;
96e176bf
CL
2325#ifdef VMS
2326 VMSISH_HUSHED = 0;
2327#endif
6224f72b 2328
14dd3ad8 2329 JMPENV_PUSH(ret);
6224f72b
GS
2330 switch (ret) {
2331 case 1:
2332 cxstack_ix = -1; /* start context stack again */
312caa8e 2333 goto redo_body;
14dd3ad8 2334 case 0: /* normal completion */
14dd3ad8
GS
2335 redo_body:
2336 run_body(oldscope);
14dd3ad8
GS
2337 /* FALL THROUGH */
2338 case 2: /* my_exit() */
3280af22 2339 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2340 LEAVE;
2341 FREETMPS;
03d9f026 2342 SET_CURSTASH(PL_defstash);
3a1ee7e8 2343 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2344 PL_endav && !PL_minus_c) {
ca7b837b 2345 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2346 call_list(oldscope, PL_endav);
9ebf26ad 2347 }
6224f72b
GS
2348#ifdef MYMALLOC
2349 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2350 dump_mstats("after execution: ");
2351#endif
37038d91 2352 ret = STATUS_EXIT;
14dd3ad8 2353 break;
6224f72b 2354 case 3:
312caa8e
CS
2355 if (PL_restartop) {
2356 POPSTACK_TO(PL_mainstack);
2357 goto redo_body;
6224f72b 2358 }
5637ef5b 2359 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2360 FREETMPS;
14dd3ad8
GS
2361 ret = 1;
2362 break;
6224f72b
GS
2363 }
2364
14dd3ad8
GS
2365 JMPENV_POP;
2366 return ret;
312caa8e
CS
2367}
2368
dd374669 2369STATIC void
14dd3ad8
GS
2370S_run_body(pTHX_ I32 oldscope)
2371{
97aff369 2372 dVAR;
d3b97530
DM
2373 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2374 PL_sawampersand ? "Enabling" : "Omitting",
2375 (unsigned int)(PL_sawampersand)));
6224f72b 2376
3280af22 2377 if (!PL_restartop) {
81d86705
NC
2378#ifdef PERL_MAD
2379 if (PL_xmlfp) {
2380 xmldump_all();
2381 exit(0); /* less likely to core dump than my_exit(0) */
2382 }
2383#endif
cf2782cd 2384#ifdef DEBUGGING
f0e3f042
CS
2385 if (DEBUG_x_TEST || DEBUG_B_TEST)
2386 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2387 if (!DEBUG_q_TEST)
2388 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2389#endif
6224f72b 2390
3280af22 2391 if (PL_minus_c) {
bf49b057 2392 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2393 my_exit(0);
2394 }
3280af22 2395 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2396 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2397 if (PL_initav) {
ca7b837b 2398 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2399 call_list(oldscope, PL_initav);
9ebf26ad 2400 }
f1fac472 2401#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2402 if (PL_main_root && PL_main_root->op_slabbed)
2403 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2404#endif
6224f72b
GS
2405 }
2406
2407 /* do it */
2408
ca7b837b 2409 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2410
3280af22 2411 if (PL_restartop) {
febb3a6d 2412 PL_restartjmpenv = NULL;
533c011a 2413 PL_op = PL_restartop;
3280af22 2414 PL_restartop = 0;
cea2e8a9 2415 CALLRUNOPS(aTHX);
6224f72b 2416 }
3280af22
NIS
2417 else if (PL_main_start) {
2418 CvDEPTH(PL_main_cv) = 1;
533c011a 2419 PL_op = PL_main_start;
cea2e8a9 2420 CALLRUNOPS(aTHX);
6224f72b 2421 }
f6b3007c 2422 my_exit(0);
118e2215 2423 assert(0); /* NOTREACHED */
6224f72b
GS
2424}
2425
954c1994 2426/*
ccfc67b7
JH
2427=head1 SV Manipulation Functions
2428
954c1994
GS
2429=for apidoc p||get_sv
2430
64ace3f8
NC
2431Returns the SV of the specified Perl scalar. C<flags> are passed to
2432C<gv_fetchpv>. If C<GV_ADD> is set and the
2433Perl variable does not exist then it will be created. If C<flags> is zero
2434and the variable does not exist then NULL is returned.
954c1994
GS
2435
2436=cut
2437*/
2438
6224f72b 2439SV*
64ace3f8 2440Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2441{
2442 GV *gv;
7918f24d
NC
2443
2444 PERL_ARGS_ASSERT_GET_SV;
2445
64ace3f8 2446 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2447 if (gv)
2448 return GvSV(gv);
a0714e2c 2449 return NULL;
6224f72b
GS
2450}
2451
954c1994 2452/*
ccfc67b7
JH
2453=head1 Array Manipulation Functions
2454
954c1994
GS
2455=for apidoc p||get_av
2456
f0b90de1
SF
2457Returns the AV of the specified Perl global or package array with the given
2458name (so it won't work on lexical variables). C<flags> are passed
2459to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2460Perl variable does not exist then it will be created. If C<flags> is zero
2461and the variable does not exist then NULL is returned.
954c1994 2462
f0b90de1
SF
2463Perl equivalent: C<@{"$name"}>.
2464
954c1994
GS
2465=cut
2466*/
2467
6224f72b 2468AV*
cbfd0a87 2469Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2470{
cbfd0a87 2471 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2472
2473 PERL_ARGS_ASSERT_GET_AV;
2474
cbfd0a87 2475 if (flags)
6224f72b
GS
2476 return GvAVn(gv);
2477 if (gv)
2478 return GvAV(gv);
7d49f689 2479 return NULL;
6224f72b
GS
2480}
2481
954c1994 2482/*
ccfc67b7
JH
2483=head1 Hash Manipulation Functions
2484
954c1994
GS
2485=for apidoc p||get_hv
2486
6673a63c
NC
2487Returns the HV of the specified Perl hash. C<flags> are passed to
2488C<gv_fetchpv>. If C<GV_ADD> is set and the
2489Perl variable does not exist then it will be created. If C<flags> is zero
2490and the variable does not exist then NULL is returned.
954c1994
GS
2491
2492=cut
2493*/
2494
6224f72b 2495HV*
6673a63c 2496Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2497{
6673a63c 2498 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2499
2500 PERL_ARGS_ASSERT_GET_HV;
2501
6673a63c 2502 if (flags)
a0d0e21e
LW
2503 return GvHVn(gv);
2504 if (gv)
2505 return GvHV(gv);
5c284bb0 2506 return NULL;
a0d0e21e
LW
2507}
2508
954c1994 2509/*
ccfc67b7
JH
2510=head1 CV Manipulation Functions
2511
780a5241
NC
2512=for apidoc p||get_cvn_flags
2513
2514Returns the CV of the specified Perl subroutine. C<flags> are passed to
2515C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2516exist then it will be declared (which has the same effect as saying
2517C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2518then NULL is returned.
2519
954c1994
GS
2520=for apidoc p||get_cv
2521
780a5241 2522Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2523
2524=cut
2525*/
2526
a0d0e21e 2527CV*
780a5241 2528Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2529{
780a5241 2530 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2531
2532 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2533
334dda80
FC
2534 /* XXX this is probably not what they think they're getting.
2535 * It has the same effect as "sub name;", i.e. just a forward
2536 * declaration! */
780a5241 2537 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2538 return newSTUB(gv,0);
780a5241 2539 }
a0d0e21e 2540 if (gv)
8ebc5c01 2541 return GvCVu(gv);
601f1833 2542 return NULL;
a0d0e21e
LW
2543}
2544
2c67934f
NC
2545/* Nothing in core calls this now, but we can't replace it with a macro and
2546 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2547CV*
2548Perl_get_cv(pTHX_ const char *name, I32 flags)
2549{
7918f24d
NC
2550 PERL_ARGS_ASSERT_GET_CV;
2551
780a5241
NC
2552 return get_cvn_flags(name, strlen(name), flags);
2553}
2554
79072805
LW
2555/* Be sure to refetch the stack pointer after calling these routines. */
2556
954c1994 2557/*
ccfc67b7
JH
2558
2559=head1 Callback Functions
2560
954c1994
GS
2561=for apidoc p||call_argv
2562
f0b90de1
SF
2563Performs a callback to the specified named and package-scoped Perl subroutine
2564with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2565
2566Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2567
2568=cut
2569*/
2570
a0d0e21e 2571I32
8f42b153 2572Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2573
8ac85365
NIS
2574 /* See G_* flags in cop.h */
2575 /* null terminated arg list */
8990e307 2576{
97aff369 2577 dVAR;
a0d0e21e 2578 dSP;
8990e307 2579
7918f24d
NC
2580 PERL_ARGS_ASSERT_CALL_ARGV;
2581
924508f0 2582 PUSHMARK(SP);
a0d0e21e 2583 if (argv) {
8990e307 2584 while (*argv) {
6e449a3a 2585 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2586 argv++;
2587 }
a0d0e21e 2588 PUTBACK;
8990e307 2589 }
864dbfa3 2590 return call_pv(sub_name, flags);
8990e307
LW
2591}
2592
954c1994
GS
2593/*
2594=for apidoc p||call_pv
2595
2596Performs a callback to the specified Perl sub. See L<perlcall>.
2597
2598=cut
2599*/
2600
a0d0e21e 2601I32
864dbfa3 2602Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2603 /* name of the subroutine */
2604 /* See G_* flags in cop.h */
a0d0e21e 2605{
7918f24d
NC
2606 PERL_ARGS_ASSERT_CALL_PV;
2607
0da0e728 2608 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2609}
2610
954c1994
GS
2611/*
2612=for apidoc p||call_method
2613
2614Performs a callback to the specified Perl method. The blessed object must
2615be on the stack. See L<perlcall>.
2616
2617=cut
2618*/
2619
a0d0e21e 2620I32
864dbfa3 2621Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2622 /* name of the subroutine */
2623 /* See G_* flags in cop.h */
a0d0e21e 2624{
46ca9bac 2625 STRLEN len;
7918f24d
NC
2626 PERL_ARGS_ASSERT_CALL_METHOD;
2627
46ca9bac 2628 len = strlen(methname);
2629
2630 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2631 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2632}
2633
2634/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2635/*
2636=for apidoc p||call_sv
2637
2638Performs a callback to the Perl sub whose name is in the SV. See
2639L<perlcall>.
2640
2641=cut
2642*/
2643
a0d0e21e 2644I32
001d637e 2645Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2646 /* See G_* flags in cop.h */
a0d0e21e 2647{
27da23d5 2648 dVAR; dSP;
a0d0e21e 2649 LOGOP myop; /* fake syntax tree node */
968b3946 2650 UNOP method_op;
aa689395 2651 I32 oldmark;
8ea43dc8 2652 VOL I32 retval = 0;
a0d0e21e 2653 I32 oldscope;
54310121 2654 bool oldcatch = CATCH_GET;
6224f72b 2655 int ret;
c4420975 2656 OP* const oldop = PL_op;
db36c5a1 2657 dJMPENV;
1e422769 2658
7918f24d
NC
2659 PERL_ARGS_ASSERT_CALL_SV;
2660
a0d0e21e
LW
2661 if (flags & G_DISCARD) {
2662 ENTER;
2663 SAVETMPS;
2664 }
2f8edad0
NC
2665 if (!(flags & G_WANT)) {
2666 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2667 */
2668 flags |= G_SCALAR;
2669 }
a0d0e21e 2670
aa689395 2671 Zero(&myop, 1, LOGOP);
f51d4af5 2672 if (!(flags & G_NOARGS))
aa689395 2673 myop.op_flags |= OPf_STACKED;
4f911530 2674 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2675 SAVEOP();
533c011a 2676 PL_op = (OP*)&myop;
aa689395 2677
3280af22
NIS
2678 EXTEND(PL_stack_sp, 1);
2679 *++PL_stack_sp = sv;
aa689395 2680 oldmark = TOPMARK;
3280af22 2681 oldscope = PL_scopestack_ix;
a0d0e21e 2682
3280af22 2683 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2684 /* Handle first BEGIN of -d. */
3280af22 2685 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2686 /* Try harder, since this may have been a sighandler, thus
2687 * curstash may be meaningless. */
ea726b52 2688 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2689 && !(flags & G_NODEBUG))
5ff48db8 2690 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2691
968b3946
GS
2692 if (flags & G_METHOD) {
2693 Zero(&method_op, 1, UNOP);
5ff48db8 2694 method_op.op_next = (OP*)&myop;
968b3946 2695 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2696 method_op.op_type = OP_METHOD;
968b3946 2697 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2698 myop.op_type = OP_ENTERSUB;
f39d0b86 2699 PL_op = (OP*)&method_op;
968b3946
GS
2700 }
2701
312caa8e 2702 if (!(flags & G_EVAL)) {
0cdb2077 2703 CATCH_SET(TRUE);
d6f07c05 2704 CALL_BODY_SUB((OP*)&myop);
312caa8e 2705 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2706 CATCH_SET(oldcatch);
312caa8e
CS
2707 }
2708 else {
d78bda3d 2709 myop.op_other = (OP*)&myop;
3280af22 2710 PL_markstack_ptr--;
edb2152a 2711 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2712 PL_markstack_ptr++;
a0d0e21e 2713
14dd3ad8 2714 JMPENV_PUSH(ret);
edb2152a 2715
6224f72b
GS
2716 switch (ret) {
2717 case 0:
14dd3ad8 2718 redo_body:
d6f07c05 2719 CALL_BODY_SUB((OP*)&myop);
312caa8e 2720 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2721 if (!(flags & G_KEEPERR)) {
ab69dbc2 2722 CLEAR_ERRSV();
8433848b 2723 }
a0d0e21e 2724 break;
6224f72b 2725 case 1:
f86702cc 2726 STATUS_ALL_FAILURE;
a0d0e21e 2727 /* FALL THROUGH */
6224f72b 2728 case 2:
a0d0e21e 2729 /* my_exit() was called */
03d9f026 2730 SET_CURSTASH(PL_defstash);
a0d0e21e 2731 FREETMPS;
14dd3ad8 2732 JMPENV_POP;
f86702cc 2733 my_exit_jump();
118e2215 2734 assert(0); /* NOTREACHED */
6224f72b 2735 case 3:
3280af22 2736 if (PL_restartop) {
febb3a6d 2737 PL_restartjmpenv = NULL;
533c011a 2738 PL_op = PL_restartop;
3280af22 2739 PL_restartop = 0;
312caa8e 2740 goto redo_body;
a0d0e21e 2741 }
3280af22 2742 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2743 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2744 retval = 0;
2745 else {
2746 retval = 1;
3280af22 2747 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2748 }
312caa8e 2749 break;
a0d0e21e 2750 }
a0d0e21e 2751
edb2152a
NC
2752 if (PL_scopestack_ix > oldscope)
2753 delete_eval_scope();
14dd3ad8 2754 JMPENV_POP;
a0d0e21e 2755 }
1e422769 2756
a0d0e21e 2757 if (flags & G_DISCARD) {
3280af22 2758 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2759 retval = 0;
2760 FREETMPS;
2761 LEAVE;
2762 }
533c011a 2763 PL_op = oldop;
a0d0e21e
LW
2764 return retval;
2765}
2766
6e72f9df 2767/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2768
954c1994
GS
2769/*
2770=for apidoc p||eval_sv
2771
be064c4a
DM
2772Tells Perl to C<eval> the string in the SV. It supports the same flags
2773as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2774
2775=cut
2776*/
2777
a0d0e21e 2778I32
864dbfa3 2779Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2780
8ac85365 2781 /* See G_* flags in cop.h */
a0d0e21e 2782{
97aff369 2783 dVAR;
924508f0 2784 dSP;
a0d0e21e 2785 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2786 VOL I32 oldmark = SP - PL_stack_base;
2787 VOL I32 retval = 0;
6224f72b 2788 int ret;
c4420975 2789 OP* const oldop = PL_op;
db36c5a1 2790 dJMPENV;
84902520 2791
7918f24d
NC
2792 PERL_ARGS_ASSERT_EVAL_SV;
2793
4633a7c4
LW
2794 if (flags & G_DISCARD) {
2795 ENTER;
2796 SAVETMPS;
2797 }
2798
462e5cf6 2799 SAVEOP();
533c011a 2800 PL_op = (OP*)&myop;
5ff48db8 2801 Zero(&myop, 1, UNOP);
3280af22
NIS
2802 EXTEND(PL_stack_sp, 1);
2803 *++PL_stack_sp = sv;
79072805 2804
4633a7c4
LW
2805 if (!(flags & G_NOARGS))
2806 myop.op_flags = OPf_STACKED;
6e72f9df 2807 myop.op_type = OP_ENTEREVAL;
4f911530 2808 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2809 if (flags & G_KEEPERR)
2810 myop.op_flags |= OPf_SPECIAL;
d24ca0c5
DM
2811 if (PL_reg_state.re_reparsing)
2812 myop.op_private = OPpEVAL_COPHH;
4633a7c4 2813
dedbcade
DM
2814 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2815 * before a PUSHEVAL, which corrupts the stack after a croak */
2816 TAINT_PROPER("eval_sv()");
2817
14dd3ad8 2818 JMPENV_PUSH(ret);
6224f72b
GS
2819 switch (ret) {
2820 case 0:
14dd3ad8 2821 redo_body:
2ba65d5f
DM
2822 if (PL_op == (OP*)(&myop)) {
2823 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2824 if (!PL_op)
2825 goto fail; /* failed in compilation */
2826 }
4aca2f62 2827 CALLRUNOPS(aTHX);
312caa8e 2828 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2829 if (!(flags & G_KEEPERR)) {
ab69dbc2 2830 CLEAR_ERRSV();
8433848b 2831 }
4633a7c4 2832 break;
6224f72b 2833 case 1:
f86702cc 2834 STATUS_ALL_FAILURE;
4633a7c4 2835 /* FALL THROUGH */
6224f72b 2836 case 2:
4633a7c4 2837 /* my_exit() was called */
03d9f026 2838 SET_CURSTASH(PL_defstash);
4633a7c4 2839 FREETMPS;
14dd3ad8 2840 JMPENV_POP;
f86702cc 2841 my_exit_jump();
118e2215 2842 assert(0); /* NOTREACHED */
6224f72b 2843 case 3:
3280af22 2844 if (PL_restartop) {
febb3a6d 2845 PL_restartjmpenv = NULL;
533c011a 2846 PL_op = PL_restartop;
3280af22 2847 PL_restartop = 0;
312caa8e 2848 goto redo_body;
4633a7c4 2849 }
4aca2f62 2850 fail:
3280af22 2851 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2852 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2853 retval = 0;
2854 else {
2855 retval = 1;
3280af22 2856 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2857 }
312caa8e 2858 break;
4633a7c4
LW
2859 }
2860
14dd3ad8 2861 JMPENV_POP;
4633a7c4 2862 if (flags & G_DISCARD) {
3280af22 2863 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2864 retval = 0;
2865 FREETMPS;
2866 LEAVE;
2867 }
533c011a 2868 PL_op = oldop;
4633a7c4
LW
2869 return retval;
2870}
2871
954c1994
GS
2872/*
2873=for apidoc p||eval_pv
2874
2875Tells Perl to C<eval> the given string and return an SV* result.
2876
2877=cut
2878*/
2879
137443ea 2880SV*
864dbfa3 2881Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2882{
97aff369 2883 dVAR;
137443ea
PP
2884 dSP;
2885 SV* sv = newSVpv(p, 0);
2886
7918f24d
NC
2887 PERL_ARGS_ASSERT_EVAL_PV;
2888
864dbfa3 2889 eval_sv(sv, G_SCALAR);
137443ea
PP
2890 SvREFCNT_dec(sv);
2891
2892 SPAGAIN;
2893 sv = POPs;
2894 PUTBACK;
2895
2d8e6c8d 2896 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2897 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2898 }
137443ea
PP
2899
2900 return sv;
2901}
2902
4633a7c4
LW
2903/* Require a module. */
2904
954c1994 2905/*
ccfc67b7
JH
2906=head1 Embedding Functions
2907
954c1994
GS
2908=for apidoc p||require_pv
2909
7d3fb230
BS
2910Tells Perl to C<require> the file named by the string argument. It is
2911analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2912implemented that way; consider using load_module instead.
954c1994 2913
7d3fb230 2914=cut */
954c1994 2915
4633a7c4 2916void
864dbfa3 2917Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2918{
97aff369 2919 dVAR;
d3acc0f7 2920 dSP;
97aff369 2921 SV* sv;
7918f24d
NC
2922
2923 PERL_ARGS_ASSERT_REQUIRE_PV;
2924
e788e7d3 2925 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2926 PUTBACK;
be41e5d9
NC
2927 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2928 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2929 SPAGAIN;
2930 POPSTACK;
79072805
LW
2931}
2932
76e3520e 2933STATIC void
b6f82619 2934S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2935{
ab821d7f 2936 /* This message really ought to be max 23 lines.
75c72d73 2937 * Removed -h because the user already knows that option. Others? */
fb73857a 2938
1566c39d
NC
2939 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2940 minimum of 509 character string literals. */
27da23d5 2941 static const char * const usage_msg[] = {
1566c39d
NC
2942" -0[octal] specify record separator (\\0, if no argument)\n"
2943" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2944" -C[number/list] enables the listed Unicode features\n"
2945" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2946" -d[:debugger] run program under debugger\n"
2947" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2948" -e program one line of program (several -e's allowed, omit programfile)\n"
2949" -E program like -e, but enables all optional features\n"
2950" -f don't do $sitelib/sitecustomize.pl at startup\n"
2951" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2952" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2953" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2954" -l[octal] enable line ending processing, specifies line terminator\n"
2955" -[mM][-]module execute \"use/no module...\" before executing program\n"
2956" -n assume \"while (<>) { ... }\" loop around program\n"
2957" -p assume loop like -n but print line also, like sed\n"
2958" -s enable rudimentary parsing for switches after programfile\n"
2959" -S look for programfile using PATH environment variable\n",
2960" -t enable tainting warnings\n"
2961" -T enable tainting checks\n"
2962" -u dump core after parsing program\n"
2963" -U allow unsafe operations\n"
2964" -v print version, patchlevel and license\n"
2965" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2966" -w enable many useful warnings\n"
1566c39d
NC
2967" -W enable all warnings\n"
2968" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2969" -X disable all warnings\n"
2970" \n"
2971"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2972NULL
2973};
27da23d5 2974 const char * const *p = usage_msg;
1566c39d 2975 PerlIO *out = PerlIO_stdout();
fb73857a 2976
1566c39d
NC
2977 PerlIO_printf(out,
2978 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2979 PL_origargv[0]);
fb73857a 2980 while (*p)
1566c39d 2981 PerlIO_puts(out, *p++);
b6f82619 2982 my_exit(0);
4633a7c4
LW
2983}
2984
b4ab917c
DM
2985/* convert a string of -D options (or digits) into an int.
2986 * sets *s to point to the char after the options */
2987
2988#ifdef DEBUGGING
2989int
e1ec3a88 2990Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2991{
27da23d5 2992 static const char * const usage_msgd[] = {
651b8f1a
NC
2993 " Debugging flag values: (see also -d)\n"
2994 " p Tokenizing and parsing (with v, displays parse stack)\n"
2995 " s Stack snapshots (with v, displays all stacks)\n"
2996 " l Context (loop) stack processing\n"
2997 " t Trace execution\n"
2998 " o Method and overloading resolution\n",
2999 " c String/numeric conversions\n"
3000 " P Print profiling info, source file input state\n"
3001 " m Memory and SV allocation\n"
3002 " f Format processing\n"
3003 " r Regular expression parsing and execution\n"
3004 " x Syntax tree dump\n",
3005 " u Tainting checks\n"
3006 " H Hash dump -- usurps values()\n"
3007 " X Scratchpad allocation\n"
3008 " D Cleaning up\n"
56967202 3009 " S Op slab allocation\n"
651b8f1a
NC
3010 " T Tokenising\n"
3011 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3012 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3013 " v Verbose: use in conjunction with other flags\n"
3014 " C Copy On Write\n"
3015 " A Consistency checks on internal structures\n"
3016 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3017 " M trace smart match resolution\n"
3018 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3019 NULL
3020 };
b4ab917c 3021 int i = 0;
7918f24d
NC
3022
3023 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3024
b4ab917c
DM
3025 if (isALPHA(**s)) {
3026 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3027 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
3028
3029 for (; isALNUM(**s); (*s)++) {
c4420975 3030 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3031 if (d)
3032 i |= 1 << (d - debopts);
3033 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3034 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3035 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3036 }
3037 }
e6e64d9b 3038 else if (isDIGIT(**s)) {
b4ab917c
DM
3039 i = atoi(*s);
3040 for (; isALNUM(**s); (*s)++) ;
3041 }
ddcf8bc1 3042 else if (givehelp) {
06e869a4 3043 const char *const *p = usage_msgd;
651b8f1a 3044 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3045 }
b4ab917c
DM
3046# ifdef EBCDIC
3047 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3048 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3049 "-Dp not implemented on this platform\n");
3050# endif
3051 return i;
3052}
3053#endif
3054
79072805
LW
3055/* This routine handles any switches that can be given during run */
3056
c7030b81
NC
3057const char *
3058Perl_moreswitches(pTHX_ const char *s)
79072805 3059{
27da23d5 3060 dVAR;
84c133a0 3061 UV rschar;
0544e6df 3062 const char option = *s; /* used to remember option in -m/-M code */
79072805 3063
7918f24d
NC
3064 PERL_ARGS_ASSERT_MORESWITCHES;
3065
79072805
LW
3066 switch (*s) {
3067 case '0':
a863c7d1 3068 {
f2095865 3069 I32 flags = 0;
a3b680e6 3070 STRLEN numlen;
f2095865
JH
3071
3072 SvREFCNT_dec(PL_rs);
3073 if (s[1] == 'x' && s[2]) {
a3b680e6 3074 const char *e = s+=2;
f2095865
JH
3075 U8 *tmps;
3076
a3b680e6
AL
3077 while (*e)
3078 e++;
f2095865
JH
3079 numlen = e - s;
3080 flags = PERL_SCAN_SILENT_ILLDIGIT;
3081 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3082 if (s + numlen < e) {
3083 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3084 numlen = 0;
3085 s--;
3086 }
396482e1 3087 PL_rs = newSVpvs("");
c5661c80 3088 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3089 tmps = (U8*)SvPVX(PL_rs);
3090 uvchr_to_utf8(tmps, rschar);
3091 SvCUR_set(PL_rs, UNISKIP(rschar));
3092 SvUTF8_on(PL_rs);
3093 }
3094 else {
3095 numlen = 4;
3096 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3097 if (rschar & ~((U8)~0))
3098 PL_rs = &PL_sv_undef;
3099 else if (!rschar && numlen >= 2)
396482e1 3100 PL_rs = newSVpvs("");
f2095865
JH
3101 else {
3102 char ch = (char)rschar;
3103 PL_rs = newSVpvn(&ch, 1);
3104 }
3105 }
64ace3f8 3106 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3107 return s + numlen;
a863c7d1 3108 }
46487f74 3109 case 'C':
a05d7ebb 3110 s++;
dd374669 3111 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3112 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3113 PL_utf8cache = -1;
46487f74 3114 return s;
2304df62 3115 case 'F':
3280af22 3116 PL_minus_F = TRUE;
ebce5377
RGS
3117 PL_splitstr = ++s;
3118 while (*s && !isSPACE(*s)) ++s;
e49e380e 3119 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3120 return s;
79072805 3121 case 'a':
3280af22 3122 PL_minus_a = TRUE;
79072805
LW
3123 s++;
3124 return s;
3125 case 'c':
3280af22 3126 PL_minus_c = TRUE;
79072805
LW
3127 s++;
3128 return s;
3129 case 'd':
f20b2998 3130 forbid_setid('d', FALSE);
4633a7c4 3131 s++;
2cbb2ee1
RGS
3132
3133 /* -dt indicates to the debugger that threads will be used */
3134 if (*s == 't' && !isALNUM(s[1])) {
3135 ++s;
3136 my_setenv("PERL5DB_THREADED", "1");
3137 }
3138
70c94a19
RR
3139 /* The following permits -d:Mod to accepts arguments following an =
3140 in the fashion that -MSome::Mod does. */
3141 if (*s == ':' || *s == '=') {
b19934fb
NC
3142 const char *start;
3143 const char *end;
3144 SV *sv;
3145
3146 if (*++s == '-') {
3147 ++s;
3148 sv = newSVpvs("no Devel::");
3149 } else {
3150 sv = newSVpvs("use Devel::");
3151 }
3152
3153 start = s;
3154 end = s + strlen(s);
f85893a1 3155
b19934fb 3156 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3157 while(isALNUM(*s) || *s==':') ++s;
3158 if (*s != '=')
f85893a1 3159 sv_catpvn(sv, start, end - start);
70c94a19
RR
3160 else {
3161 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3162 /* Don't use NUL as q// delimiter here, this string goes in the
3163 * environment. */
3164 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3165 }
f85893a1 3166 s = end;
184f32ec 3167 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3168 SvREFCNT_dec(sv);
4633a7c4 3169 }
ed094faf 3170 if (!PL_perldb) {
3280af22 3171 PL_perldb = PERLDB_ALL;
a0d0e21e 3172 init_debugger();
ed094faf 3173 }
79072805
LW
3174 return s;
3175 case 'D':
0453d815 3176 {
79072805 3177#ifdef DEBUGGING
f20b2998 3178 forbid_setid('D', FALSE);
b4ab917c 3179 s++;
dd374669 3180 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3181#else /* !DEBUGGING */
0453d815 3182 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3183 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3184 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3185 for (s++; isALNUM(*s); s++) ;
79072805 3186#endif
79072805 3187 return s;
0453d815 3188 }
4633a7c4 3189 case 'h':
b6f82619 3190 usage();
79072805 3191 case 'i':
43c5f42d 3192 Safefree(PL_inplace);
c030f24b
GH
3193#if defined(__CYGWIN__) /* do backup extension automagically */
3194 if (*(s+1) == '\0') {
c86a4f2e 3195 PL_inplace = savepvs(".bak");
c030f24b
GH
3196 return s+1;
3197 }
3198#endif /* __CYGWIN__ */
5ef5d758 3199 {
d4c19fe8 3200 const char * const start = ++s;
5ef5d758
NC
3201 while (*s && !isSPACE(*s))
3202 ++s;
3203
3204 PL_inplace = savepvn(start, s - start);
3205 }
7b8d334a 3206 if (*s) {
5ef5d758 3207 ++s;
7b8d334a 3208 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3209 s++;
7b8d334a 3210 }
fb73857a 3211 return s;
4e49a025 3212 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3213 forbid_setid('I', FALSE);
fb73857a
PP
3214 ++s;
3215 while (*s && isSPACE(*s))
3216 ++s;
3217 if (*s) {
c7030b81 3218 const char *e, *p;
0df16ed7
GS
3219 p = s;
3220 /* ignore trailing spaces (possibly followed by other switches) */
3221 do {
3222 for (e = p; *e && !isSPACE(*e); e++) ;
3223 p = e;
3224 while (isSPACE(*p))
3225 p++;
3226 } while (*p && *p != '-');
55b4bc1c 3227 incpush(s, e-s,
e28f3139 3228 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3229 s = p;
3230 if (*s == '-')
3231 s++;
79072805
LW
3232 }
3233 else
a67e862a 3234 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3235 return s;
79072805 3236 case 'l':
3280af22 3237 PL_minus_l = TRUE;
79072805 3238 s++;
7889fe52
NIS
3239 if (PL_ors_sv) {
3240 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3241 PL_ors_sv = NULL;
7889fe52 3242 }
79072805 3243 if (isDIGIT(*s)) {
53305cf1 3244 I32 flags = 0;
a3b680e6 3245 STRLEN numlen;
396482e1 3246 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3247 numlen = 3 + (*s == '0');
3248 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3249 s += numlen;
3250 }
3251 else {
8bfdd7d9 3252 if (RsPARA(PL_rs)) {
396482e1 3253 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3254 }
3255 else {
8bfdd7d9 3256 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3257 }
79072805
LW
3258 }
3259 return s;
1a30305b 3260 case 'M':
f20b2998 3261 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3262 /* FALL THROUGH */
3263 case 'm':
f20b2998 3264 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3265 if (*++s) {
c7030b81 3266 const char *start;
b64cb68c 3267 const char *end;
11343788 3268 SV *sv;
e1ec3a88 3269 const char *use = "use ";
0544e6df 3270 bool colon = FALSE;
a5f75d66 3271 /* -M-foo == 'no foo' */
d0043bd1
NC
3272 /* Leading space on " no " is deliberate, to make both
3273 possibilities the same length. */
3274 if (*s == '-') { use = " no "; ++s; }
3275 sv = newSVpvn(use,4);
a5f75d66 3276 start = s;
1a30305b 3277 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3278 while(isALNUM(*s) || *s==':') {
3279 if( *s++ == ':' ) {
3280 if( *s == ':' )
3281 s++;
3282 else
3283 colon = TRUE;
3284 }
3285 }
3286 if (s == start)
3287 Perl_croak(aTHX_ "Module name required with -%c option",
3288 option);
3289 if (colon)
3290 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3291 "contains single ':'",
63da6837 3292 (int)(s - start), start, option);
b64cb68c 3293 end = s + strlen(s);
c07a80fd 3294 if (*s != '=') {
b64cb68c 3295 sv_catpvn(sv, start, end - start);
0544e6df 3296 if (option == 'm') {
c07a80fd 3297 if (*s != '\0')
cea2e8a9 3298 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3299 sv_catpvs( sv, " ()");
c07a80fd
PP
3300 }
3301 } else {
11343788 3302 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3303 /* Use NUL as q''-delimiter. */
3304 sv_catpvs(sv, " split(/,/,q\0");
3305 ++s;
3306 sv_catpvn(sv, s, end - s);
396482e1 3307 sv_catpvs(sv, "\0)");
c07a80fd 3308 }
b64cb68c 3309 s = end;
29a861e7 3310 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3311 }
3312 else
0544e6df 3313 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3314 return s;
79072805 3315 case 'n':
3280af22 3316 PL_minus_n = TRUE;
79072805
LW
3317 s++;
3318 return s;
3319 case 'p':
3280af22 3320 PL_minus_p = TRUE;
79072805
LW
3321 s++;
3322 return s;
3323 case 's':
f20b2998 3324 forbid_setid('s', FALSE);
3280af22 3325 PL_doswitches = TRUE;
79072805
LW
3326 s++;
3327 return s;
6537fe72 3328 case 't':
27a6968b 3329 case 'T':
284167a5
SM
3330#if SILENT_NO_TAINT_SUPPORT
3331 /* silently ignore */
3332#elif NO_TAINT_SUPPORT
3333 Perl_croak("This perl was compiled without taint support. "
3334 "Cowardly refusing to run with -t or -T flags");
3335#else
3336 if (!TAINTING_get)
27a6968b 3337 TOO_LATE_FOR(*s);
284167a5 3338#endif
6537fe72 3339 s++;
463ee0b2 3340 return s;
79072805 3341 case 'u':
3280af22 3342 PL_do_undump = TRUE;
79072805
LW
3343 s++;
3344 return s;
3345 case 'U':
3280af22 3346 PL_unsafe = TRUE;
79072805
LW
3347 s++;
3348 return s;
3349 case 'v':
c4bc78d9
NC
3350 minus_v();
3351 case 'w':
3352 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3353 PL_dowarn |= G_WARN_ON;
3354 }
3355 s++;
3356 return s;
3357 case 'W':
3358 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3359 if (!specialWARN(PL_compiling.cop_warnings))
3360 PerlMemShared_free(PL_compiling.cop_warnings);
3361 PL_compiling.cop_warnings = pWARN_ALL ;
3362 s++;
3363 return s;
3364 case 'X':
3365 PL_dowarn = G_WARN_ALL_OFF;
3366 if (!specialWARN(PL_compiling.cop_warnings))
3367 PerlMemShared_free(PL_compiling.cop_warnings);
3368 PL_compiling.cop_warnings = pWARN_NONE ;
3369 s++;
3370 return s;
3371 case '*':
3372 case ' ':
3373 while( *s == ' ' )
3374 ++s;
3375 if (s[0] == '-') /* Additional switches on #! line. */
3376 return s+1;
3377 break;
3378 case '-':
3379 case 0:
3380#if defined(WIN32) || !defined(PERL_STRICT_CR)
3381 case '\r':
3382#endif
3383 case '\n':
3384 case '\t':
3385 break;
3386#ifdef ALTERNATE_SHEBANG
3387 case 'S': /* OS/2 needs -S on "extproc" line. */
3388 break;
3389#endif
4bb78d63
CB
3390 case 'e': case 'f': case 'x': case 'E':
3391#ifndef ALTERNATE_SHEBANG
3392 case 'S':
3393#endif
3394 case 'V':
c4bc78d9 3395 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3396 default:
3397 Perl_croak(aTHX_
3398 "Unrecognized switch: -%.1s (-h will show valid options)",s
3399 );
c4bc78d9
NC
3400 }
3401 return NULL;
3402}
3403
3404
3405STATIC void
3406S_minus_v(pTHX)
3407{
fc3381af 3408 PerlIO * PIO_stdout;
d7aa5382 3409 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3410 upg_version(PL_patchlevel, TRUE);
8e9464f1 3411#if !defined(DGUX)
46807d8e
YO
3412 {
3413 SV* level= vstringify(PL_patchlevel);
3414#ifdef PERL_PATCHNUM
23d483e2
NC
3415# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3416 SV *num = newSVpvs(PERL_PATCHNUM "*");
3417# else
3418 SV *num = newSVpvs(PERL_PATCHNUM);
3419# endif
fc3381af
DD
3420 {
3421 STRLEN level_len, num_len;
3422 char * level_str, * num_str;
3423 num_str = SvPV(num, num_len);
3424 level_str = SvPV(level, level_len);
3425 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3426 SvREFCNT_dec(level);
3427 level= num;
3428 } else {
3429 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3430 SvREFCNT_dec(num);
3431 }
46807d8e
YO
3432 }
3433 #endif
fc3381af
DD
3434 PIO_stdout = PerlIO_stdout();
3435 PerlIO_printf(PIO_stdout,
ded326e4
DG
3436 "\nThis is perl " STRINGIFY(PERL_REVISION)
3437 ", version " STRINGIFY(PERL_VERSION)
3438 ", subversion " STRINGIFY(PERL_SUBVERSION)
3439 " (%"SVf") built for " ARCHNAME, level
3440 );
46807d8e
YO
3441 SvREFCNT_dec(level);
3442 }
8e9464f1 3443#else /* DGUX */
fc3381af 3444 PIO_stdout = PerlIO_stdout();
8e9464f1 3445/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
fc3381af 3446 PerlIO_printf(PIO_stdout,
52ea0aec 3447 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3448 SVfARG(vstringify(PL_patchlevel))));
fc3381af 3449 PerlIO_printf(PIO_stdout,
8e9464f1
JH
3450 Perl_form(aTHX_ " built under %s at %s %s\n",
3451 OSNAME, __DATE__, __TIME__));
fc3381af 3452 PerlIO_printf(PIO_stdout,
8e9464f1 3453 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3454 OSVERS));
8e9464f1 3455#endif /* !DGUX */
fb73857a
PP
3456#if defined(LOCAL_PATCH_COUNT)
3457 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3458 PerlIO_printf(PIO_stdout,
b0e47665
GS
3459 "\n(with %d registered patch%s, "
3460 "see perl -V for more detail)",
bb7a0f54 3461 LOCAL_PATCH_COUNT,
b0e47665 3462 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3463#endif
1a30305b 3464
fc3381af 3465 PerlIO_printf(PIO_stdout,
fdfb76e4 3466 "\n\nCopyright 1987-2012, Larry Wall\n");
79072805 3467#ifdef MSDOS
fc3381af 3468 PerlIO_printf(PIO_stdout,
b0e47665 3469 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3470#endif
3471#ifdef DJGPP
fc3381af 3472 PerlIO_printf(PIO_stdout,
b0e47665
GS
3473 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3474 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3475#endif
79072805 3476#ifdef OS2
fc3381af 3477 PerlIO_printf(PIO_stdout,
b0e47665 3478 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3479 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3480#endif
a3f9223b 3481#ifdef __BEOS__
fc3381af 3482 PerlIO_printf(PIO_stdout,
b0e47665 3483 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3484#endif
9d116dd7 3485#ifdef OEMVS
fc3381af 3486 PerlIO_printf(PIO_stdout,
b0e47665 3487 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3488#endif
495c5fdc 3489#ifdef __VOS__
fc3381af 3490 PerlIO_printf(PIO_stdout,
94efb9fb 3491 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3492#endif
a1a0e61e 3493#ifdef POSIX_BC
fc3381af 3494 PerlIO_printf(PIO_stdout,
b0e47665 3495 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3496#endif
f83d2536 3497#ifdef EPOC
fc3381af 3498 PerlIO_printf(PIO_stdout,
be3c0a43 3499 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3500#endif
e1caacb4 3501#ifdef UNDER_CE
fc3381af
DD
3502 PerlIO_printf(PIO_stdout,
3503 "WINCE port by Rainer Keuchel, 2001-2002\n"
3504 "Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3505 wce_hitreturn();
3506#endif
a0fd4948 3507#ifdef __SYMBIAN32__
fc3381af 3508 PerlIO_printf(PIO_stdout,
27da23d5
JH
3509 "Symbian port by Nokia, 2004-2005\n");
3510#endif
baed7233
DL
3511#ifdef BINARY_BUILD_NOTICE
3512 BINARY_BUILD_NOTICE;
3513#endif
fc3381af 3514 PerlIO_printf(PIO_stdout,
b0e47665 3515 "\n\
79072805 3516Perl may be copied only under the terms of either the Artistic License or the\n\