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parser.t: Move a test above ‘Add new tests here’
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CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
39#endif
40
2982a345
NC
41#ifdef USE_KERN_PROC_PATHNAME
42# include <sys/sysctl.h>
43#endif
44
ae60cb46
NC
45#ifdef USE_NSGETEXECUTABLEPATH
46# include <mach-o/dyld.h>
47#endif
48
2aa47728 49#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
50# ifdef I_SYSUIO
51# include <sys/uio.h>
52# endif
53
54union control_un {
55 struct cmsghdr cm;
56 char control[CMSG_SPACE(sizeof(int))];
57};
58
2aa47728
NC
59#endif
60
5311654c
JH
61#ifdef __BEOS__
62# define HZ 1000000
63#endif
64
65#ifndef HZ
66# ifdef CLK_TCK
67# define HZ CLK_TCK
68# else
69# define HZ 60
70# endif
71#endif
72
7114a2d2 73#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 74char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
75#endif
76
acfe0abc 77static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 78
cc69b689 79#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 80# define validate_suid(rsfp) NOOP
cc69b689 81#else
b24bc095 82# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 83#endif
8d063cd8 84
d6f07c05
AL
85#define CALL_BODY_SUB(myop) \
86 if (PL_op == (myop)) \
139d0ce6 87 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
88 if (PL_op) \
89 CALLRUNOPS(aTHX);
90
91#define CALL_LIST_BODY(cv) \
92 PUSHMARK(PL_stack_sp); \
9a8aa25b 93 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 94
e6827a76 95static void
daa7d858 96S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 97{
27da23d5 98 dVAR;
e6827a76
NC
99 if (!PL_curinterp) {
100 PERL_SET_INTERP(my_perl);
3db8f154 101#if defined(USE_ITHREADS)
e6827a76
NC
102 INIT_THREADS;
103 ALLOC_THREAD_KEY;
104 PERL_SET_THX(my_perl);
105 OP_REFCNT_INIT;
e8570548 106 OP_CHECK_MUTEX_INIT;
71ad1b0c 107 HINTS_REFCNT_INIT;
e6827a76 108 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
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;
3280af22 863 PL_sawampersand = FALSE; /* 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 }
a0714e2c 1232 PL_formfeed = NULL;
6e72f9df 1233 nuke_stacks();
bf9cdc68
RG
1234 PL_tainting = FALSE;
1235 PL_taint_warn = FALSE;
3280af22 1236 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1237 PL_debug = 0;
ac27b0f5 1238
a0d0e21e 1239 DEBUG_P(debprofdump());
d33b2eba 1240
e5dd39fc 1241#ifdef USE_REENTRANT_API
10bc17b6 1242 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1243#endif
1244
612f20c3
GS
1245 sv_free_arenas();
1246
5d9a96ca
DM
1247 while (PL_regmatch_slab) {
1248 regmatch_slab *s = PL_regmatch_slab;
1249 PL_regmatch_slab = PL_regmatch_slab->next;
1250 Safefree(s);
1251 }
1252
fc36a67e
PP
1253 /* As the absolutely last thing, free the non-arena SV for mess() */
1254
3280af22 1255 if (PL_mess_sv) {
f350b448
NC
1256 /* we know that type == SVt_PVMG */
1257
9c63abab 1258 /* it could have accumulated taint magic */
f350b448
NC
1259 MAGIC* mg;
1260 MAGIC* moremagic;
1261 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1262 moremagic = mg->mg_moremagic;
1263 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1264 && mg->mg_len >= 0)
1265 Safefree(mg->mg_ptr);
1266 Safefree(mg);
9c63abab 1267 }
f350b448 1268
fc36a67e 1269 /* we know that type >= SVt_PV */
8bd4d4c5 1270 SvPV_free(PL_mess_sv);
3280af22
NIS
1271 Safefree(SvANY(PL_mess_sv));
1272 Safefree(PL_mess_sv);
a0714e2c 1273 PL_mess_sv = NULL;
fc36a67e 1274 }
37038d91 1275 return STATUS_EXIT;
79072805
LW
1276}
1277
954c1994
GS
1278/*
1279=for apidoc perl_free
1280
1281Releases a Perl interpreter. See L<perlembed>.
1282
1283=cut
1284*/
1285
79072805 1286void
0cb96387 1287perl_free(pTHXx)
79072805 1288{
5174512c
NC
1289 dVAR;
1290
7918f24d
NC
1291 PERL_ARGS_ASSERT_PERL_FREE;
1292
c301d606
DM
1293 if (PL_veto_cleanup)
1294 return;
1295
7cb608b5 1296#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1297 {
1298 /*
1299 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1300 * value as we're probably hunting memory leaks then
1301 */
36e77d41 1302 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1303 const U32 old_debug = PL_debug;
55ef9aae
MHM
1304 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1305 thread at thread exit. */
4fd0a9b8
NC
1306 if (DEBUG_m_TEST) {
1307 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1308 "free this thread's memory\n");
1309 PL_debug &= ~ DEBUG_m_FLAG;
1310 }
55ef9aae
MHM
1311 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1312 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1313 PL_debug = old_debug;
55ef9aae
MHM
1314 }
1315 }
7cb608b5
NC
1316#endif
1317
acfe0abc 1318#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1319# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1320 {
acfe0abc 1321# ifdef NETWARE
7af12a34 1322 void *host = nw_internal_host;
acfe0abc 1323# else
7af12a34 1324 void *host = w32_internal_host;
acfe0abc 1325# endif
7af12a34 1326 PerlMem_free(aTHXx);
acfe0abc 1327# ifdef NETWARE
7af12a34 1328 nw_delete_internal_host(host);
acfe0abc 1329# else
7af12a34 1330 win32_delete_internal_host(host);
acfe0abc 1331# endif
7af12a34 1332 }
1c0ca838
GS
1333# else
1334 PerlMem_free(aTHXx);
1335# endif
acfe0abc
GS
1336#else
1337 PerlMem_free(aTHXx);
76e3520e 1338#endif
79072805
LW
1339}
1340
b7f7fff6 1341#if defined(USE_ITHREADS)
aebd1ac7
GA
1342/* provide destructors to clean up the thread key when libperl is unloaded */
1343#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1344
826955bd 1345#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1346#pragma fini "perl_fini"
666ad1ec
GA
1347#elif defined(__sun) && !defined(__GNUC__)
1348#pragma fini (perl_fini)
aebd1ac7
GA
1349#endif
1350
0dbb1585
AL
1351static void
1352#if defined(__GNUC__)
1353__attribute__((destructor))
aebd1ac7 1354#endif
de009b76 1355perl_fini(void)
aebd1ac7 1356{
27da23d5 1357 dVAR;
c301d606 1358 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1359 FREE_THREAD_KEY;
1360}
1361
1362#endif /* WIN32 */
1363#endif /* THREADS */
1364
4b556e6c 1365void
864dbfa3 1366Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1367{
97aff369 1368 dVAR;
3280af22
NIS
1369 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1370 PL_exitlist[PL_exitlistlen].fn = fn;
1371 PL_exitlist[PL_exitlistlen].ptr = ptr;
1372 ++PL_exitlistlen;
4b556e6c
JD
1373}
1374
b7975bdd
NC
1375STATIC void
1376S_set_caret_X(pTHX) {
97aff369 1377 dVAR;
fafc274c 1378 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1379 if (tmpgv) {
0f1723e1 1380 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1381#if defined(OS2)
1382 sv_setpv(caret_x, os2_execname(aTHX));
1383#else
2982a345
NC
1384# ifdef USE_KERN_PROC_PATHNAME
1385 size_t size = 0;
1386 int mib[4];
1387 mib[0] = CTL_KERN;
1388 mib[1] = KERN_PROC;
1389 mib[2] = KERN_PROC_PATHNAME;
1390 mib[3] = -1;
1391
1392 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1393 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1394 sv_grow(caret_x, size);
1395
1396 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1397 && size > 2) {
1398 SvPOK_only(caret_x);
1399 SvCUR_set(caret_x, size - 1);
1400 SvTAINT(caret_x);
1401 return;
1402 }
1403 }
ae60cb46
NC
1404# elif defined(USE_NSGETEXECUTABLEPATH)
1405 char buf[1];
1406 uint32_t size = sizeof(buf);
ae60cb46
NC
1407
1408 _NSGetExecutablePath(buf, &size);
1409 if (size < MAXPATHLEN * MAXPATHLEN) {
1410 sv_grow(caret_x, size);
1411 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1412 char *const tidied = realpath(SvPVX(caret_x), NULL);
1413 if (tidied) {
1414 sv_setpv(caret_x, tidied);
1415 free(tidied);
1416 } else {
1417 SvPOK_only(caret_x);
1418 SvCUR_set(caret_x, size);
1419 }
1420 return;
1421 }
1422 }
2982a345 1423# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1424 char buf[MAXPATHLEN];
1425 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1426
1427 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1428 includes a spurious NUL which will cause $^X to fail in system
1429 or backticks (this will prevent extensions from being built and
1430 many tests from working). readlink is not meant to add a NUL.
1431 Normal readlink works fine.
1432 */
1433 if (len > 0 && buf[len-1] == '\0') {
1434 len--;
1435 }
1436
1437 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1438 returning the text "unknown" from the readlink rather than the path
1439 to the executable (or returning an error from the readlink). Any
1440 valid path has a '/' in it somewhere, so use that to validate the
1441 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1442 */
1443 if (len > 0 && memchr(buf, '/', len)) {
1444 sv_setpvn(caret_x, buf, len);
82552a95 1445 return;
700dd4f8 1446 }
82552a95
NC
1447# endif
1448 /* Fallback to this: */
0f1723e1 1449 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1450#endif
b7975bdd
NC
1451 }
1452}
1453
954c1994
GS
1454/*
1455=for apidoc perl_parse
1456
1457Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1458
1459=cut
1460*/
1461
03d9f026
FC
1462#define SET_CURSTASH(newstash) \
1463 if (PL_curstash != newstash) { \
1464 SvREFCNT_dec(PL_curstash); \
1465 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1466 }
1467
79072805 1468int
0cb96387 1469perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1470{
27da23d5 1471 dVAR;
6224f72b 1472 I32 oldscope;
6224f72b 1473 int ret;
db36c5a1 1474 dJMPENV;
8d063cd8 1475
7918f24d
NC
1476 PERL_ARGS_ASSERT_PERL_PARSE;
1477#ifndef MULTIPLICITY
ed6c66dd 1478 PERL_UNUSED_ARG(my_perl);
7918f24d 1479#endif
9d4ba2ae 1480
b0891165
JH
1481#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1482 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1483 * This MUST be done before any hash stores or fetches take place.
486ec47a 1484 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1485 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1486 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1487 if (!PL_rehash_seed_set)
1488 PL_rehash_seed = get_hash_seed();
b0891165 1489 {
9d4ba2ae 1490 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1491
1b6737cc
AL
1492 if (s && (atoi(s) == 1))
1493 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1494 }
1495#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1496
3280af22 1497 PL_origargc = argc;
e2975953 1498 PL_origargv = argv;
a0d0e21e 1499
a2722ac9
GA
1500 if (PL_origalen != 0) {
1501 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1502 }
1503 else {
3cb9023d
JH
1504 /* Set PL_origalen be the sum of the contiguous argv[]
1505 * elements plus the size of the env in case that it is
e9137a8e 1506 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1507 * as the maximum modifiable length of $0. In the worst case
1508 * the area we are able to modify is limited to the size of
43c32782 1509 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1510 * --jhi */
e1ec3a88 1511 const char *s = NULL;
54bfe034 1512 int i;
1b6737cc 1513 const UV mask =
7d8e7db3 1514 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1515 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1516 const UV aligned =
43c32782
JH
1517 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1518
1519 /* See if all the arguments are contiguous in memory. Note
1520 * that 'contiguous' is a loose term because some platforms
1521 * align the argv[] and the envp[]. If the arguments look
1522 * like non-aligned, assume that they are 'strictly' or
1523 * 'traditionally' contiguous. If the arguments look like
1524 * aligned, we just check that they are within aligned
1525 * PTRSIZE bytes. As long as no system has something bizarre
1526 * like the argv[] interleaved with some other data, we are
1527 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1528 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1529 while (*s) s++;
1530 for (i = 1; i < PL_origargc; i++) {
1531 if ((PL_origargv[i] == s + 1
43c32782 1532#ifdef OS2
c8941eeb 1533 || PL_origargv[i] == s + 2
43c32782 1534#endif
c8941eeb
JH
1535 )
1536 ||
1537 (aligned &&
1538 (PL_origargv[i] > s &&
1539 PL_origargv[i] <=
1540 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1541 )
1542 {
1543 s = PL_origargv[i];
1544 while (*s) s++;
1545 }
1546 else
1547 break;
54bfe034 1548 }
54bfe034 1549 }
a4a109c2
JD
1550
1551#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1552 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1553 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1554 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1555 ||
1556 (aligned &&
1557 (PL_origenviron[0] > s &&
1558 PL_origenviron[0] <=
1559 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1560 )
1561 {
9d419b5f 1562#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1563 s = PL_origenviron[0];
1564 while (*s) s++;
1565#endif
bd61b366 1566 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1567 /* Force copy of environment. */
1568 for (i = 1; PL_origenviron[i]; i++) {
1569 if (PL_origenviron[i] == s + 1
1570 ||
1571 (aligned &&
1572 (PL_origenviron[i] > s &&
1573 PL_origenviron[i] <=
1574 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1575 )
1576 {
1577 s = PL_origenviron[i];
1578 while (*s) s++;
1579 }
1580 else
1581 break;
54bfe034 1582 }
43c32782 1583 }
54bfe034 1584 }
a4a109c2
JD
1585#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1586
2d2af554 1587 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1588 }
1589
3280af22 1590 if (PL_do_undump) {
a0d0e21e
LW
1591
1592 /* Come here if running an undumped a.out. */
1593
3280af22
NIS
1594 PL_origfilename = savepv(argv[0]);
1595 PL_do_undump = FALSE;
a0d0e21e 1596 cxstack_ix = -1; /* start label stack again */
748a9306 1597 init_ids();
b7975bdd
NC
1598 assert (!PL_tainted);
1599 TAINT;
1600 S_set_caret_X(aTHX);
1601 TAINT_NOT;
a0d0e21e
LW
1602 init_postdump_symbols(argc,argv,env);
1603 return 0;
1604 }
1605
3280af22 1606 if (PL_main_root) {
3280af22 1607 op_free(PL_main_root);
5f66b61c 1608 PL_main_root = NULL;
ff0cee69 1609 }
5f66b61c 1610 PL_main_start = NULL;
3280af22 1611 SvREFCNT_dec(PL_main_cv);
601f1833 1612 PL_main_cv = NULL;
79072805 1613
3280af22
NIS
1614 time(&PL_basetime);
1615 oldscope = PL_scopestack_ix;
599cee73 1616 PL_dowarn = G_WARN_OFF;
f86702cc 1617
14dd3ad8 1618 JMPENV_PUSH(ret);
6224f72b 1619 switch (ret) {
312caa8e 1620 case 0:
14dd3ad8 1621 parse_body(env,xsinit);
9ebf26ad 1622 if (PL_unitcheckav) {
3c10abe3 1623 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1624 }
1625 if (PL_checkav) {
ca7b837b 1626 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1627 call_list(oldscope, PL_checkav);
9ebf26ad 1628 }
14dd3ad8
GS
1629 ret = 0;
1630 break;
6224f72b
GS
1631 case 1:
1632 STATUS_ALL_FAILURE;
1633 /* FALL THROUGH */
1634 case 2:
1635 /* my_exit() was called */
3280af22 1636 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1637 LEAVE;
1638 FREETMPS;
03d9f026 1639 SET_CURSTASH(PL_defstash);
9ebf26ad 1640 if (PL_unitcheckav) {
3c10abe3 1641 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1642 }
1643 if (PL_checkav) {
ca7b837b 1644 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1645 call_list(oldscope, PL_checkav);
9ebf26ad 1646 }
37038d91 1647 ret = STATUS_EXIT;
14dd3ad8 1648 break;
6224f72b 1649 case 3:
bf49b057 1650 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1651 ret = 1;
1652 break;
6224f72b 1653 }
14dd3ad8
GS
1654 JMPENV_POP;
1655 return ret;
1656}
1657
4a5df386
NC
1658/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1659 miniperl, and we need to see those flags reflected in the values here. */
1660
1661/* What this returns is subject to change. Use the public interface in Config.
1662 */
1663static void
1664S_Internals_V(pTHX_ CV *cv)
1665{
1666 dXSARGS;
1667#ifdef LOCAL_PATCH_COUNT
1668 const int local_patch_count = LOCAL_PATCH_COUNT;
1669#else
1670 const int local_patch_count = 0;
1671#endif
2dc296d2 1672 const int entries = 3 + local_patch_count;
4a5df386
NC
1673 int i;
1674 static char non_bincompat_options[] =
1675# ifdef DEBUGGING
1676 " DEBUGGING"
1677# endif
1678# ifdef NO_MATHOMS
0d311fbe 1679 " NO_MATHOMS"
4a5df386
NC
1680# endif
1681# ifdef PERL_DISABLE_PMC
1682 " PERL_DISABLE_PMC"
1683# endif
1684# ifdef PERL_DONT_CREATE_GVSV
1685 " PERL_DONT_CREATE_GVSV"
1686# endif
9a044a43
NC
1687# ifdef PERL_EXTERNAL_GLOB
1688 " PERL_EXTERNAL_GLOB"
1689# endif
4a5df386
NC
1690# ifdef PERL_IS_MINIPERL
1691 " PERL_IS_MINIPERL"
1692# endif
1693# ifdef PERL_MALLOC_WRAP
1694 " PERL_MALLOC_WRAP"
1695# endif
1696# ifdef PERL_MEM_LOG
1697 " PERL_MEM_LOG"
1698# endif
1699# ifdef PERL_MEM_LOG_NOIMPL
1700 " PERL_MEM_LOG_NOIMPL"
1701# endif
c3cf41ec
NC
1702# ifdef PERL_PRESERVE_IVUV
1703 " PERL_PRESERVE_IVUV"
1704# endif
c051e30b
NC
1705# ifdef PERL_RELOCATABLE_INCPUSH
1706 " PERL_RELOCATABLE_INCPUSH"
1707# endif
4a5df386
NC
1708# ifdef PERL_USE_DEVEL
1709 " PERL_USE_DEVEL"
1710# endif
1711# ifdef PERL_USE_SAFE_PUTENV
1712 " PERL_USE_SAFE_PUTENV"
1713# endif
a3749cf3
NC
1714# ifdef UNLINK_ALL_VERSIONS
1715 " UNLINK_ALL_VERSIONS"
1716# endif
de618ee4
NC
1717# ifdef USE_ATTRIBUTES_FOR_PERLIO
1718 " USE_ATTRIBUTES_FOR_PERLIO"
1719# endif
4a5df386
NC
1720# ifdef USE_FAST_STDIO
1721 " USE_FAST_STDIO"
1722# endif
98548bdf
NC
1723# ifdef USE_LOCALE
1724 " USE_LOCALE"
1725# endif
98548bdf
NC
1726# ifdef USE_LOCALE_CTYPE
1727 " USE_LOCALE_CTYPE"
1728# endif
5a8d8935
NC
1729# ifdef USE_PERL_ATOF
1730 " USE_PERL_ATOF"
1731# endif
0d311fbe
NC
1732# ifdef USE_SITECUSTOMIZE
1733 " USE_SITECUSTOMIZE"
1734# endif
4a5df386
NC
1735 ;
1736 PERL_UNUSED_ARG(cv);
1737 PERL_UNUSED_ARG(items);
1738
1739 EXTEND(SP, entries);
1740
1741 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1742 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1743 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1744
1745#ifdef __DATE__
1746# ifdef __TIME__
1747 PUSHs(Perl_newSVpvn_flags(aTHX_
1748 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1749 SVs_TEMP));
1750# else
1751 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1752 SVs_TEMP));
1753# endif
1754#else
1755 PUSHs(&PL_sv_undef);
1756#endif
1757
4a5df386
NC
1758 for (i = 1; i <= local_patch_count; i++) {
1759 /* This will be an undef, if PL_localpatches[i] is NULL. */
1760 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1761 }
1762
1763 XSRETURN(entries);
1764}
1765
be71fc8f
NC
1766#define INCPUSH_UNSHIFT 0x01
1767#define INCPUSH_ADD_OLD_VERS 0x02
1768#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1769#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1770#define INCPUSH_NOT_BASEDIR 0x10
1771#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1772#define INCPUSH_ADD_SUB_DIRS \
1773 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1774
312caa8e 1775STATIC void *
14dd3ad8 1776S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1777{
27da23d5 1778 dVAR;
2f9285f8 1779 PerlIO *rsfp;
312caa8e 1780 int argc = PL_origargc;
8f42b153 1781 char **argv = PL_origargv;
e1ec3a88 1782 const char *scriptname = NULL;
312caa8e 1783 VOL bool dosearch = FALSE;
eb578fdb 1784 char c;
737c24fc 1785 bool doextract = FALSE;
bd61b366 1786 const char *cddir = NULL;
ab019eaa 1787#ifdef USE_SITECUSTOMIZE
20ef40cf 1788 bool minus_f = FALSE;
ab019eaa 1789#endif
95670bde 1790 SV *linestr_sv = NULL;
5486870f 1791 bool add_read_e_script = FALSE;
87606032 1792 U32 lex_start_flags = 0;
009d90df 1793
ca7b837b 1794 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1795
6224f72b 1796 init_main_stash();
54310121 1797
c7030b81
NC
1798 {
1799 const char *s;
6224f72b
GS
1800 for (argc--,argv++; argc > 0; argc--,argv++) {
1801 if (argv[0][0] != '-' || !argv[0][1])
1802 break;
6224f72b
GS
1803 s = argv[0]+1;
1804 reswitch:
47f56822 1805 switch ((c = *s)) {
729a02f2 1806 case 'C':
1d5472a9
GS
1807#ifndef PERL_STRICT_CR
1808 case '\r':
1809#endif
6224f72b
GS
1810 case ' ':
1811 case '0':
1812 case 'F':
1813 case 'a':
1814 case 'c':
1815 case 'd':
1816 case 'D':
1817 case 'h':
1818 case 'i':
1819 case 'l':
1820 case 'M':
1821 case 'm':
1822 case 'n':
1823 case 'p':
1824 case 's':
1825 case 'u':
1826 case 'U':
1827 case 'v':
599cee73
PM
1828 case 'W':
1829 case 'X':
6224f72b 1830 case 'w':
97bd5664 1831 if ((s = moreswitches(s)))
6224f72b
GS
1832 goto reswitch;
1833 break;
33b78306 1834
1dbad523 1835 case 't':
22f7c9c9 1836 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1837 if( !PL_tainting ) {
1838 PL_taint_warn = TRUE;
1839 PL_tainting = TRUE;
1840 }
1841 s++;
1842 goto reswitch;
6224f72b 1843 case 'T':
22f7c9c9 1844 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1845 PL_tainting = TRUE;
317ea90d 1846 PL_taint_warn = FALSE;
6224f72b
GS
1847 s++;
1848 goto reswitch;
f86702cc 1849
bc9b29db
RH
1850 case 'E':
1851 PL_minus_E = TRUE;
1852 /* FALL THROUGH */
6224f72b 1853 case 'e':
f20b2998 1854 forbid_setid('e', FALSE);
3280af22 1855 if (!PL_e_script) {
396482e1 1856 PL_e_script = newSVpvs("");
5486870f 1857 add_read_e_script = TRUE;
6224f72b
GS
1858 }
1859 if (*++s)
3280af22 1860 sv_catpv(PL_e_script, s);
6224f72b 1861 else if (argv[1]) {
3280af22 1862 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1863 argc--,argv++;
1864 }
1865 else
47f56822 1866 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1867 sv_catpvs(PL_e_script, "\n");
6224f72b 1868 break;
afe37c7d 1869
20ef40cf 1870 case 'f':
f5542d3a 1871#ifdef USE_SITECUSTOMIZE
20ef40cf 1872 minus_f = TRUE;
f5542d3a 1873#endif
20ef40cf
GA
1874 s++;
1875 goto reswitch;
1876
6224f72b 1877 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1878 forbid_setid('I', FALSE);
bd61b366 1879 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1880 argc--,argv++;
1881 }
6224f72b 1882 if (s && *s) {
0df16ed7 1883 STRLEN len = strlen(s);
55b4bc1c 1884 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1885 }
1886 else
a67e862a 1887 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1888 break;
6224f72b 1889 case 'S':
f20b2998 1890 forbid_setid('S', FALSE);
6224f72b
GS
1891 dosearch = TRUE;
1892 s++;
1893 goto reswitch;
1894 case 'V':
7edfd0ef
NC
1895 {
1896 SV *opts_prog;
1897
7edfd0ef 1898 if (*++s != ':') {
37ca4a5b 1899 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1900 }
1901 else {
1902 ++s;
1903 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1904 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1905 0, s, 0);
1906 s += strlen(s);
1907 }
37ca4a5b 1908 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1909 /* don't look for script or read stdin */
1910 scriptname = BIT_BUCKET;
1911 goto reswitch;
6224f72b 1912 }
6224f72b 1913 case 'x':
737c24fc 1914 doextract = TRUE;
6224f72b 1915 s++;
304334da 1916 if (*s)
f4c556ac 1917 cddir = s;
6224f72b
GS
1918 break;
1919 case 0:
1920 break;
1921 case '-':
1922 if (!*++s || isSPACE(*s)) {
1923 argc--,argv++;
1924 goto switch_end;
1925 }
ee8bc8b7
NC
1926 /* catch use of gnu style long options.
1927 Both of these exit immediately. */
1928 if (strEQ(s, "version"))
1929 minus_v();
1930 if (strEQ(s, "help"))
1931 usage();
6224f72b
GS
1932 s--;
1933 /* FALL THROUGH */
1934 default:
cea2e8a9 1935 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1936 }
1937 }
c7030b81
NC
1938 }
1939
6224f72b 1940 switch_end:
54310121 1941
c7030b81
NC
1942 {
1943 char *s;
1944
f675dbe5
CB
1945 if (
1946#ifndef SECURE_INTERNAL_GETENV
1947 !PL_tainting &&
1948#endif
cf756827 1949 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1950 {
74288ac8
GS
1951 while (isSPACE(*s))
1952 s++;
317ea90d 1953 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1954 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1955 PL_tainting = TRUE;
317ea90d
MS
1956 PL_taint_warn = FALSE;
1957 }
74288ac8 1958 else {
bd61b366 1959 char *popt_copy = NULL;
74288ac8 1960 while (s && *s) {
54913509 1961 const char *d;
74288ac8
GS
1962 while (isSPACE(*s))
1963 s++;
1964 if (*s == '-') {
1965 s++;
1966 if (isSPACE(*s))
1967 continue;
1968 }
4ea8f8fb 1969 d = s;
74288ac8
GS
1970 if (!*s)
1971 break;
2b622f1a 1972 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1973 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1974 while (++s && *s) {
1975 if (isSPACE(*s)) {
cf756827 1976 if (!popt_copy) {
bfa6c418
NC
1977 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1978 s = popt_copy + (s - d);
1979 d = popt_copy;
cf756827 1980 }
4ea8f8fb
MS
1981 *s++ = '\0';
1982 break;
1983 }
1984 }
1c4db469 1985 if (*d == 't') {
317ea90d
MS
1986 if( !PL_tainting ) {
1987 PL_taint_warn = TRUE;
1988 PL_tainting = TRUE;
1989 }
1c4db469 1990 } else {
97bd5664 1991 moreswitches(d);
1c4db469 1992 }
6224f72b 1993 }
6224f72b
GS
1994 }
1995 }
c7030b81 1996 }
a0d0e21e 1997
c29067d7
CH
1998 /* Set $^X early so that it can be used for relocatable paths in @INC */
1999 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2000 assert (!PL_tainted);
2001 TAINT;
2002 S_set_caret_X(aTHX);
2003 TAINT_NOT;
2004
43c0c913 2005#if defined(USE_SITECUSTOMIZE)
20ef40cf 2006 if (!minus_f) {
43c0c913 2007 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2008 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2009 ie a q() operator with a NUL byte as a the delimiter. This avoids
2010 problems with pathnames containing (say) ' */
43c0c913
NC
2011# ifdef PERL_IS_MINIPERL
2012 AV *const inc = GvAV(PL_incgv);
2013 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2014
2015 if (inc0) {
2016 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2017 Perl_newSVpvf(aTHX_
fc81b718
NC
2018 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2019 0, *inc0, 0,
2020 0, *inc0, 0));
43c0c913
NC
2021 }
2022# else
2023 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2024 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2025 if (raw_sitelib) {
2026 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2027 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2028 INCPUSH_CAN_RELOCATE);
2029 const char *const sitelib = SvPVX(sitelib_sv);
2030 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2031 Perl_newSVpvf(aTHX_
2032 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2033 0, sitelib, 0,
2034 0, sitelib, 0));
2035 assert (SvREFCNT(sitelib_sv) == 1);
2036 SvREFCNT_dec(sitelib_sv);
2037 }
43c0c913 2038# endif
20ef40cf
GA
2039 }
2040#endif
2041
6224f72b
GS
2042 if (!scriptname)
2043 scriptname = argv[0];
3280af22 2044 if (PL_e_script) {
6224f72b
GS
2045 argc++,argv--;
2046 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2047 }
bd61b366 2048 else if (scriptname == NULL) {
6224f72b
GS
2049#ifdef MSDOS
2050 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2051 moreswitches("h");
6224f72b
GS
2052#endif
2053 scriptname = "-";
2054 }
2055
b7975bdd 2056 assert (!PL_tainted);
2cace6ac 2057 init_perllib();
6224f72b 2058
a52eba0e 2059 {
f20b2998 2060 bool suidscript = FALSE;
829372d3 2061
8d113837 2062 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2063 if (!rsfp) {
2064 rsfp = PerlIO_stdin();
87606032 2065 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2066 }
6224f72b 2067
b24bc095 2068 validate_suid(rsfp);
6224f72b 2069
64ca3a65 2070#ifndef PERL_MICRO
a52eba0e
NC
2071# if defined(SIGCHLD) || defined(SIGCLD)
2072 {
2073# ifndef SIGCHLD
2074# define SIGCHLD SIGCLD
2075# endif
2076 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2077 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2078 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2079 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2080 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2081 }
0b5b802d 2082 }
a52eba0e 2083# endif
64ca3a65 2084#endif
0b5b802d 2085
737c24fc 2086 if (doextract) {
faef540c 2087
f20b2998 2088 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2089 setuid scripts. */
2090 forbid_setid('x', suidscript);
f20b2998 2091 /* Hence you can't get here if suidscript is true */
faef540c 2092
95670bde
NC
2093 linestr_sv = newSV_type(SVt_PV);
2094 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2095 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2096 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2097 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2098 }
f4c556ac 2099 }
6224f72b 2100
ea726b52 2101 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2102 CvUNIQUE_on(PL_compcv);
2103
dd2155a4 2104 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2105
dd69841b
BB
2106 PL_isarev = newHV();
2107
0c4f7ff0 2108 boot_core_PerlIO();
6224f72b 2109 boot_core_UNIVERSAL();
e1a479c5 2110 boot_core_mro();
4a5df386 2111 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2112
2113 if (xsinit)
acfe0abc 2114 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2115#ifndef PERL_MICRO
d0d72822 2116#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2117 init_os_extras();
6224f72b 2118#endif
64ca3a65 2119#endif
6224f72b 2120
29209bc5 2121#ifdef USE_SOCKS
1b9c9cf5
DH
2122# ifdef HAS_SOCKS5_INIT
2123 socks5_init(argv[0]);
2124# else
29209bc5 2125 SOCKSinit(argv[0]);
1b9c9cf5 2126# endif
ac27b0f5 2127#endif
29209bc5 2128
6224f72b
GS
2129 init_predump_symbols();
2130 /* init_postdump_symbols not currently designed to be called */
2131 /* more than once (ENV isn't cleared first, for example) */
2132 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2133 if (!PL_do_undump)
6224f72b
GS
2134 init_postdump_symbols(argc,argv,env);
2135
27da23d5
JH
2136 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2137 * or explicitly in some platforms.
085a54d9 2138 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2139 * look like the user wants to use UTF-8. */
a0fd4948 2140#if defined(__SYMBIAN32__)
27da23d5
JH
2141 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2142#endif
e27b5b51 2143# ifndef PERL_IS_MINIPERL
06e66572
JH
2144 if (PL_unicode) {
2145 /* Requires init_predump_symbols(). */
a05d7ebb 2146 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2147 IO* io;
2148 PerlIO* fp;
2149 SV* sv;
2150
a05d7ebb 2151 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2152 * and the default open disciplines. */
a05d7ebb
JH
2153 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2154 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2155 (fp = IoIFP(io)))
2156 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2157 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2158 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2159 (fp = IoOFP(io)))
2160 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2161 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2162 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2163 (fp = IoOFP(io)))
2164 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2165 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2166 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2167 SVt_PV)))) {
a05d7ebb
JH
2168 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2169 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2170 if (in) {
2171 if (out)
76f68e9b 2172 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2173 else
76f68e9b 2174 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2175 }
2176 else if (out)
76f68e9b 2177 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2178 SvSETMAGIC(sv);
2179 }
b310b053
JH
2180 }
2181 }
e27b5b51 2182#endif
b310b053 2183
c7030b81
NC
2184 {
2185 const char *s;
4ffa73a3
JH
2186 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2187 if (strEQ(s, "unsafe"))
2188 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2189 else if (strEQ(s, "safe"))
2190 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2191 else
2192 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2193 }
c7030b81 2194 }
4ffa73a3 2195
81d86705 2196#ifdef PERL_MAD
c7030b81
NC
2197 {
2198 const char *s;
2cc12391
TC
2199 if (!PL_tainting &&
2200 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC
2201 PL_madskills = 1;
2202 PL_minus_c = 1;
2203 if (!s || !s[0])
2204 PL_xmlfp = PerlIO_stdout();
2205 else {
2206 PL_xmlfp = PerlIO_open(s, "w");
2207 if (!PL_xmlfp)
2208 Perl_croak(aTHX_ "Can't open %s", s);
2209 }
1a9a51d4 2210 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2211 }
c7030b81
NC
2212 }
2213
2214 {
2215 const char *s;
81d86705
NC
2216 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2217 PL_madskills = atoi(s);
1a9a51d4 2218 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2219 }
c7030b81 2220 }
81d86705
NC
2221#endif
2222
87606032 2223 lex_start(linestr_sv, rsfp, lex_start_flags);
95670bde
NC
2224 if(linestr_sv)
2225 SvREFCNT_dec(linestr_sv);
2226
219f7226 2227 PL_subname = newSVpvs("main");
6224f72b 2228
5486870f
DM
2229 if (add_read_e_script)
2230 filter_add(read_e_script, NULL);
2231
6224f72b
GS
2232 /* now parse the script */
2233
93189314 2234 SETERRNO(0,SS_NORMAL);
28ac2b49 2235 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2236 if (PL_minus_c)
cea2e8a9 2237 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2238 else {
cea2e8a9 2239 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2240 PL_origfilename);
6224f72b
GS
2241 }
2242 }
57843af0 2243 CopLINE_set(PL_curcop, 0);
03d9f026 2244 SET_CURSTASH(PL_defstash);
3280af22
NIS
2245 if (PL_e_script) {
2246 SvREFCNT_dec(PL_e_script);
a0714e2c 2247 PL_e_script = NULL;
6224f72b
GS
2248 }
2249
3280af22 2250 if (PL_do_undump)
6224f72b
GS
2251 my_unexec();
2252
57843af0
GS
2253 if (isWARN_ONCE) {
2254 SAVECOPFILE(PL_curcop);
2255 SAVECOPLINE(PL_curcop);
3280af22 2256 gv_check(PL_defstash);
57843af0 2257 }
6224f72b
GS
2258
2259 LEAVE;
2260 FREETMPS;
2261
2262#ifdef MYMALLOC
f6a607bc
RGS
2263 {
2264 const char *s;
6224f72b
GS
2265 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2266 dump_mstats("after compilation:");
f6a607bc 2267 }
6224f72b
GS
2268#endif
2269
2270 ENTER;
febb3a6d 2271 PL_restartjmpenv = NULL;
3280af22 2272 PL_restartop = 0;
312caa8e 2273 return NULL;
6224f72b
GS
2274}
2275
954c1994
GS
2276/*
2277=for apidoc perl_run
2278
2279Tells a Perl interpreter to run. See L<perlembed>.
2280
2281=cut
2282*/
2283
6224f72b 2284int
0cb96387 2285perl_run(pTHXx)
6224f72b 2286{
97aff369 2287 dVAR;
6224f72b 2288 I32 oldscope;
14dd3ad8 2289 int ret = 0;
db36c5a1 2290 dJMPENV;
6224f72b 2291
7918f24d
NC
2292 PERL_ARGS_ASSERT_PERL_RUN;
2293#ifndef MULTIPLICITY
ed6c66dd 2294 PERL_UNUSED_ARG(my_perl);
7918f24d 2295#endif
9d4ba2ae 2296
3280af22 2297 oldscope = PL_scopestack_ix;
96e176bf
CL
2298#ifdef VMS
2299 VMSISH_HUSHED = 0;
2300#endif
6224f72b 2301
14dd3ad8 2302 JMPENV_PUSH(ret);
6224f72b
GS
2303 switch (ret) {
2304 case 1:
2305 cxstack_ix = -1; /* start context stack again */
312caa8e 2306 goto redo_body;
14dd3ad8 2307 case 0: /* normal completion */
14dd3ad8
GS
2308 redo_body:
2309 run_body(oldscope);
14dd3ad8
GS
2310 /* FALL THROUGH */
2311 case 2: /* my_exit() */
3280af22 2312 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2313 LEAVE;
2314 FREETMPS;
03d9f026 2315 SET_CURSTASH(PL_defstash);
3a1ee7e8 2316 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2317 PL_endav && !PL_minus_c) {
ca7b837b 2318 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2319 call_list(oldscope, PL_endav);
9ebf26ad 2320 }
6224f72b
GS
2321#ifdef MYMALLOC
2322 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2323 dump_mstats("after execution: ");
2324#endif
37038d91 2325 ret = STATUS_EXIT;
14dd3ad8 2326 break;
6224f72b 2327 case 3:
312caa8e
CS
2328 if (PL_restartop) {
2329 POPSTACK_TO(PL_mainstack);
2330 goto redo_body;
6224f72b 2331 }
5637ef5b 2332 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2333 FREETMPS;
14dd3ad8
GS
2334 ret = 1;
2335 break;
6224f72b
GS
2336 }
2337
14dd3ad8
GS
2338 JMPENV_POP;
2339 return ret;
312caa8e
CS
2340}
2341
dd374669 2342STATIC void
14dd3ad8
GS
2343S_run_body(pTHX_ I32 oldscope)
2344{
97aff369 2345 dVAR;
6224f72b 2346 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2347 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2348
3280af22 2349 if (!PL_restartop) {
81d86705
NC
2350#ifdef PERL_MAD
2351 if (PL_xmlfp) {
2352 xmldump_all();
2353 exit(0); /* less likely to core dump than my_exit(0) */
2354 }
2355#endif
cf2782cd 2356#ifdef DEBUGGING
f0e3f042
CS
2357 if (DEBUG_x_TEST || DEBUG_B_TEST)
2358 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2359 if (!DEBUG_q_TEST)
2360 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2361#endif
6224f72b 2362
3280af22 2363 if (PL_minus_c) {
bf49b057 2364 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2365 my_exit(0);
2366 }
3280af22 2367 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2368 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2369 if (PL_initav) {
ca7b837b 2370 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2371 call_list(oldscope, PL_initav);
9ebf26ad 2372 }
f1fac472 2373#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2374 if (PL_main_root && PL_main_root->op_slabbed)
2375 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2376#endif
6224f72b
GS
2377 }
2378
2379 /* do it */
2380
ca7b837b 2381 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2382
3280af22 2383 if (PL_restartop) {
febb3a6d 2384 PL_restartjmpenv = NULL;
533c011a 2385 PL_op = PL_restartop;
3280af22 2386 PL_restartop = 0;
cea2e8a9 2387 CALLRUNOPS(aTHX);
6224f72b 2388 }
3280af22
NIS
2389 else if (PL_main_start) {
2390 CvDEPTH(PL_main_cv) = 1;
533c011a 2391 PL_op = PL_main_start;
cea2e8a9 2392 CALLRUNOPS(aTHX);
6224f72b 2393 }
f6b3007c 2394 my_exit(0);
118e2215 2395 assert(0); /* NOTREACHED */
6224f72b
GS
2396}
2397
954c1994 2398/*
ccfc67b7
JH
2399=head1 SV Manipulation Functions
2400
954c1994
GS
2401=for apidoc p||get_sv
2402
64ace3f8
NC
2403Returns the SV of the specified Perl scalar. C<flags> are passed to
2404C<gv_fetchpv>. If C<GV_ADD> is set and the
2405Perl variable does not exist then it will be created. If C<flags> is zero
2406and the variable does not exist then NULL is returned.
954c1994
GS
2407
2408=cut
2409*/
2410
6224f72b 2411SV*
64ace3f8 2412Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2413{
2414 GV *gv;
7918f24d
NC
2415
2416 PERL_ARGS_ASSERT_GET_SV;
2417
64ace3f8 2418 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2419 if (gv)
2420 return GvSV(gv);
a0714e2c 2421 return NULL;
6224f72b
GS
2422}
2423
954c1994 2424/*
ccfc67b7
JH
2425=head1 Array Manipulation Functions
2426
954c1994
GS
2427=for apidoc p||get_av
2428
f0b90de1
SF
2429Returns the AV of the specified Perl global or package array with the given
2430name (so it won't work on lexical variables). C<flags> are passed
2431to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2432Perl variable does not exist then it will be created. If C<flags> is zero
2433and the variable does not exist then NULL is returned.
954c1994 2434
f0b90de1
SF
2435Perl equivalent: C<@{"$name"}>.
2436
954c1994
GS
2437=cut
2438*/
2439
6224f72b 2440AV*
cbfd0a87 2441Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2442{
cbfd0a87 2443 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2444
2445 PERL_ARGS_ASSERT_GET_AV;
2446
cbfd0a87 2447 if (flags)
6224f72b
GS
2448 return GvAVn(gv);
2449 if (gv)
2450 return GvAV(gv);
7d49f689 2451 return NULL;
6224f72b
GS
2452}
2453
954c1994 2454/*
ccfc67b7
JH
2455=head1 Hash Manipulation Functions
2456
954c1994
GS
2457=for apidoc p||get_hv
2458
6673a63c
NC
2459Returns the HV of the specified Perl hash. C<flags> are passed to
2460C<gv_fetchpv>. If C<GV_ADD> is set and the
2461Perl variable does not exist then it will be created. If C<flags> is zero
2462and the variable does not exist then NULL is returned.
954c1994
GS
2463
2464=cut
2465*/
2466
6224f72b 2467HV*
6673a63c 2468Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2469{
6673a63c 2470 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2471
2472 PERL_ARGS_ASSERT_GET_HV;
2473
6673a63c 2474 if (flags)
a0d0e21e
LW
2475 return GvHVn(gv);
2476 if (gv)
2477 return GvHV(gv);
5c284bb0 2478 return NULL;
a0d0e21e
LW
2479}
2480
954c1994 2481/*
ccfc67b7
JH
2482=head1 CV Manipulation Functions
2483
780a5241
NC
2484=for apidoc p||get_cvn_flags
2485
2486Returns the CV of the specified Perl subroutine. C<flags> are passed to
2487C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2488exist then it will be declared (which has the same effect as saying
2489C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2490then NULL is returned.
2491
954c1994
GS
2492=for apidoc p||get_cv
2493
780a5241 2494Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2495
2496=cut
2497*/
2498
a0d0e21e 2499CV*
780a5241 2500Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2501{
780a5241 2502 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2503
2504 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2505
334dda80
FC
2506 /* XXX this is probably not what they think they're getting.
2507 * It has the same effect as "sub name;", i.e. just a forward
2508 * declaration! */
780a5241 2509 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2510 return newSTUB(gv,0);
780a5241 2511 }
a0d0e21e 2512 if (gv)
8ebc5c01 2513 return GvCVu(gv);
601f1833 2514 return NULL;
a0d0e21e
LW
2515}
2516
2c67934f
NC
2517/* Nothing in core calls this now, but we can't replace it with a macro and
2518 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2519CV*
2520Perl_get_cv(pTHX_ const char *name, I32 flags)
2521{
7918f24d
NC
2522 PERL_ARGS_ASSERT_GET_CV;
2523
780a5241
NC
2524 return get_cvn_flags(name, strlen(name), flags);
2525}
2526
79072805
LW
2527/* Be sure to refetch the stack pointer after calling these routines. */
2528
954c1994 2529/*
ccfc67b7
JH
2530
2531=head1 Callback Functions
2532
954c1994
GS
2533=for apidoc p||call_argv
2534
f0b90de1
SF
2535Performs a callback to the specified named and package-scoped Perl subroutine
2536with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2537
2538Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2539
2540=cut
2541*/
2542
a0d0e21e 2543I32
8f42b153 2544Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2545
8ac85365
NIS
2546 /* See G_* flags in cop.h */
2547 /* null terminated arg list */
8990e307 2548{
97aff369 2549 dVAR;
a0d0e21e 2550 dSP;
8990e307 2551
7918f24d
NC
2552 PERL_ARGS_ASSERT_CALL_ARGV;
2553
924508f0 2554 PUSHMARK(SP);
a0d0e21e 2555 if (argv) {
8990e307 2556 while (*argv) {
6e449a3a 2557 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2558 argv++;
2559 }
a0d0e21e 2560 PUTBACK;
8990e307 2561 }
864dbfa3 2562 return call_pv(sub_name, flags);
8990e307
LW
2563}
2564
954c1994
GS
2565/*
2566=for apidoc p||call_pv
2567
2568Performs a callback to the specified Perl sub. See L<perlcall>.
2569
2570=cut
2571*/
2572
a0d0e21e 2573I32
864dbfa3 2574Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2575 /* name of the subroutine */
2576 /* See G_* flags in cop.h */
a0d0e21e 2577{
7918f24d
NC
2578 PERL_ARGS_ASSERT_CALL_PV;
2579
0da0e728 2580 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2581}
2582
954c1994
GS
2583/*
2584=for apidoc p||call_method
2585
2586Performs a callback to the specified Perl method. The blessed object must
2587be on the stack. See L<perlcall>.
2588
2589=cut
2590*/
2591
a0d0e21e 2592I32
864dbfa3 2593Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2594 /* name of the subroutine */
2595 /* See G_* flags in cop.h */
a0d0e21e 2596{
46ca9bac 2597 STRLEN len;
7918f24d
NC
2598 PERL_ARGS_ASSERT_CALL_METHOD;
2599
46ca9bac 2600 len = strlen(methname);
2601
2602 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2603 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2604}
2605
2606/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2607/*
2608=for apidoc p||call_sv
2609
2610Performs a callback to the Perl sub whose name is in the SV. See
2611L<perlcall>.
2612
2613=cut
2614*/
2615
a0d0e21e 2616I32
001d637e 2617Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2618 /* See G_* flags in cop.h */
a0d0e21e 2619{
27da23d5 2620 dVAR; dSP;
a0d0e21e 2621 LOGOP myop; /* fake syntax tree node */
968b3946 2622 UNOP method_op;
aa689395 2623 I32 oldmark;
8ea43dc8 2624 VOL I32 retval = 0;
a0d0e21e 2625 I32 oldscope;
54310121 2626 bool oldcatch = CATCH_GET;
6224f72b 2627 int ret;
c4420975 2628 OP* const oldop = PL_op;
db36c5a1 2629 dJMPENV;
1e422769 2630
7918f24d
NC
2631 PERL_ARGS_ASSERT_CALL_SV;
2632
a0d0e21e
LW
2633 if (flags & G_DISCARD) {
2634 ENTER;
2635 SAVETMPS;
2636 }
2f8edad0
NC
2637 if (!(flags & G_WANT)) {
2638 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2639 */
2640 flags |= G_SCALAR;
2641 }
a0d0e21e 2642
aa689395 2643 Zero(&myop, 1, LOGOP);
5f66b61c 2644 myop.op_next = NULL;
f51d4af5 2645 if (!(flags & G_NOARGS))
aa689395 2646 myop.op_flags |= OPf_STACKED;
4f911530 2647 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2648 SAVEOP();
533c011a 2649 PL_op = (OP*)&myop;
aa689395 2650
3280af22
NIS
2651 EXTEND(PL_stack_sp, 1);
2652 *++PL_stack_sp = sv;
aa689395 2653 oldmark = TOPMARK;
3280af22 2654 oldscope = PL_scopestack_ix;
a0d0e21e 2655
3280af22 2656 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2657 /* Handle first BEGIN of -d. */
3280af22 2658 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2659 /* Try harder, since this may have been a sighandler, thus
2660 * curstash may be meaningless. */
ea726b52 2661 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2662 && !(flags & G_NODEBUG))
533c011a 2663 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2664
968b3946
GS
2665 if (flags & G_METHOD) {
2666 Zero(&method_op, 1, UNOP);
2667 method_op.op_next = PL_op;
2668 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2669 method_op.op_type = OP_METHOD;
968b3946 2670 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2671 myop.op_type = OP_ENTERSUB;
f39d0b86 2672 PL_op = (OP*)&method_op;
968b3946
GS
2673 }
2674
312caa8e 2675 if (!(flags & G_EVAL)) {
0cdb2077 2676 CATCH_SET(TRUE);
d6f07c05 2677 CALL_BODY_SUB((OP*)&myop);
312caa8e 2678 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2679 CATCH_SET(oldcatch);
312caa8e
CS
2680 }
2681 else {
d78bda3d 2682 myop.op_other = (OP*)&myop;
3280af22 2683 PL_markstack_ptr--;
edb2152a 2684 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2685 PL_markstack_ptr++;
a0d0e21e 2686
14dd3ad8 2687 JMPENV_PUSH(ret);
edb2152a 2688
6224f72b
GS
2689 switch (ret) {
2690 case 0:
14dd3ad8 2691 redo_body:
d6f07c05 2692 CALL_BODY_SUB((OP*)&myop);
312caa8e 2693 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2694 if (!(flags & G_KEEPERR)) {
ab69dbc2 2695 CLEAR_ERRSV();
8433848b 2696 }
a0d0e21e 2697 break;
6224f72b 2698 case 1:
f86702cc 2699 STATUS_ALL_FAILURE;
a0d0e21e 2700 /* FALL THROUGH */
6224f72b 2701 case 2:
a0d0e21e 2702 /* my_exit() was called */
03d9f026 2703 SET_CURSTASH(PL_defstash);
a0d0e21e 2704 FREETMPS;
14dd3ad8 2705 JMPENV_POP;
f86702cc 2706 my_exit_jump();
118e2215 2707 assert(0); /* NOTREACHED */
6224f72b 2708 case 3:
3280af22 2709 if (PL_restartop) {
febb3a6d 2710 PL_restartjmpenv = NULL;
533c011a 2711 PL_op = PL_restartop;
3280af22 2712 PL_restartop = 0;
312caa8e 2713 goto redo_body;
a0d0e21e 2714 }
3280af22 2715 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2716 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2717 retval = 0;
2718 else {
2719 retval = 1;
3280af22 2720 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2721 }
312caa8e 2722 break;
a0d0e21e 2723 }
a0d0e21e 2724
edb2152a
NC
2725 if (PL_scopestack_ix > oldscope)
2726 delete_eval_scope();
14dd3ad8 2727 JMPENV_POP;
a0d0e21e 2728 }
1e422769 2729
a0d0e21e 2730 if (flags & G_DISCARD) {
3280af22 2731 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2732 retval = 0;
2733 FREETMPS;
2734 LEAVE;
2735 }
533c011a 2736 PL_op = oldop;
a0d0e21e
LW
2737 return retval;
2738}
2739
6e72f9df 2740/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2741
954c1994
GS
2742/*
2743=for apidoc p||eval_sv
2744
be064c4a
DM
2745Tells Perl to C<eval> the string in the SV. It supports the same flags
2746as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2747
2748=cut
2749*/
2750
a0d0e21e 2751I32
864dbfa3 2752Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2753
8ac85365 2754 /* See G_* flags in cop.h */
a0d0e21e 2755{
97aff369 2756 dVAR;
924508f0 2757 dSP;
a0d0e21e 2758 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2759 VOL I32 oldmark = SP - PL_stack_base;
2760 VOL I32 retval = 0;
6224f72b 2761 int ret;
c4420975 2762 OP* const oldop = PL_op;
db36c5a1 2763 dJMPENV;
84902520 2764
7918f24d
NC
2765 PERL_ARGS_ASSERT_EVAL_SV;
2766
4633a7c4
LW
2767 if (flags & G_DISCARD) {
2768 ENTER;
2769 SAVETMPS;
2770 }
2771
462e5cf6 2772 SAVEOP();
533c011a
NIS
2773 PL_op = (OP*)&myop;
2774 Zero(PL_op, 1, UNOP);
3280af22
NIS
2775 EXTEND(PL_stack_sp, 1);
2776 *++PL_stack_sp = sv;
79072805 2777
4633a7c4
LW
2778 if (!(flags & G_NOARGS))
2779 myop.op_flags = OPf_STACKED;
5f66b61c 2780 myop.op_next = NULL;
6e72f9df 2781 myop.op_type = OP_ENTEREVAL;
4f911530 2782 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2783 if (flags & G_KEEPERR)
2784 myop.op_flags |= OPf_SPECIAL;
d24ca0c5
DM
2785 if (PL_reg_state.re_reparsing)
2786 myop.op_private = OPpEVAL_COPHH;
4633a7c4 2787
dedbcade
DM
2788 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2789 * before a PUSHEVAL, which corrupts the stack after a croak */
2790 TAINT_PROPER("eval_sv()");
2791
14dd3ad8 2792 JMPENV_PUSH(ret);
6224f72b
GS
2793 switch (ret) {
2794 case 0:
14dd3ad8 2795 redo_body:
2ba65d5f
DM
2796 if (PL_op == (OP*)(&myop)) {
2797 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2798 if (!PL_op)
2799 goto fail; /* failed in compilation */
2800 }
4aca2f62 2801 CALLRUNOPS(aTHX);
312caa8e 2802 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2803 if (!(flags & G_KEEPERR)) {
ab69dbc2 2804 CLEAR_ERRSV();
8433848b 2805 }
4633a7c4 2806 break;
6224f72b 2807 case 1:
f86702cc 2808 STATUS_ALL_FAILURE;
4633a7c4 2809 /* FALL THROUGH */
6224f72b 2810 case 2:
4633a7c4 2811 /* my_exit() was called */
03d9f026 2812 SET_CURSTASH(PL_defstash);
4633a7c4 2813 FREETMPS;
14dd3ad8 2814 JMPENV_POP;
f86702cc 2815 my_exit_jump();
118e2215 2816 assert(0); /* NOTREACHED */
6224f72b 2817 case 3:
3280af22 2818 if (PL_restartop) {
febb3a6d 2819 PL_restartjmpenv = NULL;
533c011a 2820 PL_op = PL_restartop;
3280af22 2821 PL_restartop = 0;
312caa8e 2822 goto redo_body;
4633a7c4 2823 }
4aca2f62 2824 fail:
3280af22 2825 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2826 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2827 retval = 0;
2828 else {
2829 retval = 1;
3280af22 2830 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2831 }
312caa8e 2832 break;
4633a7c4
LW
2833 }
2834
14dd3ad8 2835 JMPENV_POP;
4633a7c4 2836 if (flags & G_DISCARD) {
3280af22 2837 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2838 retval = 0;
2839 FREETMPS;
2840 LEAVE;
2841 }
533c011a 2842 PL_op = oldop;
4633a7c4
LW
2843 return retval;
2844}
2845
954c1994
GS
2846/*
2847=for apidoc p||eval_pv
2848
2849Tells Perl to C<eval> the given string and return an SV* result.
2850
2851=cut
2852*/
2853
137443ea 2854SV*
864dbfa3 2855Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2856{
97aff369 2857 dVAR;
137443ea
PP
2858 dSP;
2859 SV* sv = newSVpv(p, 0);
2860
7918f24d
NC
2861 PERL_ARGS_ASSERT_EVAL_PV;
2862
864dbfa3 2863 eval_sv(sv, G_SCALAR);
137443ea
PP
2864 SvREFCNT_dec(sv);
2865
2866 SPAGAIN;
2867 sv = POPs;
2868 PUTBACK;
2869
2d8e6c8d 2870 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2871 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2872 }
137443ea
PP
2873
2874 return sv;
2875}
2876
4633a7c4
LW
2877/* Require a module. */
2878
954c1994 2879/*
ccfc67b7
JH
2880=head1 Embedding Functions
2881
954c1994
GS
2882=for apidoc p||require_pv
2883
7d3fb230
BS
2884Tells Perl to C<require> the file named by the string argument. It is
2885analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2886implemented that way; consider using load_module instead.
954c1994 2887
7d3fb230 2888=cut */
954c1994 2889
4633a7c4 2890void
864dbfa3 2891Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2892{
97aff369 2893 dVAR;
d3acc0f7 2894 dSP;
97aff369 2895 SV* sv;
7918f24d
NC
2896
2897 PERL_ARGS_ASSERT_REQUIRE_PV;
2898
e788e7d3 2899 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2900 PUTBACK;
be41e5d9
NC
2901 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2902 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2903 SPAGAIN;
2904 POPSTACK;
79072805
LW
2905}
2906
76e3520e 2907STATIC void
b6f82619 2908S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2909{
ab821d7f 2910 /* This message really ought to be max 23 lines.
75c72d73 2911 * Removed -h because the user already knows that option. Others? */
fb73857a 2912
1566c39d
NC
2913 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2914 minimum of 509 character string literals. */
27da23d5 2915 static const char * const usage_msg[] = {
1566c39d
NC
2916" -0[octal] specify record separator (\\0, if no argument)\n"
2917" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2918" -C[number/list] enables the listed Unicode features\n"
2919" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2920" -d[:debugger] run program under debugger\n"
2921" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2922" -e program one line of program (several -e's allowed, omit programfile)\n"
2923" -E program like -e, but enables all optional features\n"
2924" -f don't do $sitelib/sitecustomize.pl at startup\n"
2925" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2926" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2927" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2928" -l[octal] enable line ending processing, specifies line terminator\n"
2929" -[mM][-]module execute \"use/no module...\" before executing program\n"
2930" -n assume \"while (<>) { ... }\" loop around program\n"
2931" -p assume loop like -n but print line also, like sed\n"
2932" -s enable rudimentary parsing for switches after programfile\n"
2933" -S look for programfile using PATH environment variable\n",
2934" -t enable tainting warnings\n"
2935" -T enable tainting checks\n"
2936" -u dump core after parsing program\n"
2937" -U allow unsafe operations\n"
2938" -v print version, patchlevel and license\n"
2939" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2940" -w enable many useful warnings\n"
1566c39d
NC
2941" -W enable all warnings\n"
2942" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2943" -X disable all warnings\n"
2944" \n"
2945"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2946NULL
2947};
27da23d5 2948 const char * const *p = usage_msg;
1566c39d 2949 PerlIO *out = PerlIO_stdout();
fb73857a 2950
1566c39d
NC
2951 PerlIO_printf(out,
2952 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2953 PL_origargv[0]);
fb73857a 2954 while (*p)
1566c39d 2955 PerlIO_puts(out, *p++);
b6f82619 2956 my_exit(0);
4633a7c4
LW
2957}
2958
b4ab917c
DM
2959/* convert a string of -D options (or digits) into an int.
2960 * sets *s to point to the char after the options */
2961
2962#ifdef DEBUGGING
2963int
e1ec3a88 2964Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2965{
27da23d5 2966 static const char * const usage_msgd[] = {
651b8f1a
NC
2967 " Debugging flag values: (see also -d)\n"
2968 " p Tokenizing and parsing (with v, displays parse stack)\n"
2969 " s Stack snapshots (with v, displays all stacks)\n"
2970 " l Context (loop) stack processing\n"
2971 " t Trace execution\n"
2972 " o Method and overloading resolution\n",
2973 " c String/numeric conversions\n"
2974 " P Print profiling info, source file input state\n"
2975 " m Memory and SV allocation\n"
2976 " f Format processing\n"
2977 " r Regular expression parsing and execution\n"
2978 " x Syntax tree dump\n",
2979 " u Tainting checks\n"
2980 " H Hash dump -- usurps values()\n"
2981 " X Scratchpad allocation\n"
2982 " D Cleaning up\n"
56967202 2983 " S Op slab allocation\n"
651b8f1a
NC
2984 " T Tokenising\n"
2985 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2986 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2987 " v Verbose: use in conjunction with other flags\n"
2988 " C Copy On Write\n"
2989 " A Consistency checks on internal structures\n"
2990 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2991 " M trace smart match resolution\n"
2992 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2993 NULL
2994 };
b4ab917c 2995 int i = 0;
7918f24d
NC
2996
2997 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2998
b4ab917c
DM
2999 if (isALPHA(**s)) {
3000 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3001 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
3002
3003 for (; isALNUM(**s); (*s)++) {
c4420975 3004 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3005 if (d)
3006 i |= 1 << (d - debopts);
3007 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3008 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3009 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3010 }
3011 }
e6e64d9b 3012 else if (isDIGIT(**s)) {
b4ab917c
DM
3013 i = atoi(*s);
3014 for (; isALNUM(**s); (*s)++) ;
3015 }
ddcf8bc1 3016 else if (givehelp) {
06e869a4 3017 const char *const *p = usage_msgd;
651b8f1a 3018 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3019 }
b4ab917c
DM
3020# ifdef EBCDIC
3021 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3022 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3023 "-Dp not implemented on this platform\n");
3024# endif
3025 return i;
3026}
3027#endif
3028
79072805
LW
3029/* This routine handles any switches that can be given during run */
3030
c7030b81
NC
3031const char *
3032Perl_moreswitches(pTHX_ const char *s)
79072805 3033{
27da23d5 3034 dVAR;
84c133a0 3035 UV rschar;
0544e6df 3036 const char option = *s; /* used to remember option in -m/-M code */
79072805 3037
7918f24d
NC
3038 PERL_ARGS_ASSERT_MORESWITCHES;
3039
79072805
LW
3040 switch (*s) {
3041 case '0':
a863c7d1 3042 {
f2095865 3043 I32 flags = 0;
a3b680e6 3044 STRLEN numlen;
f2095865
JH
3045
3046 SvREFCNT_dec(PL_rs);
3047 if (s[1] == 'x' && s[2]) {
a3b680e6 3048 const char *e = s+=2;
f2095865
JH
3049 U8 *tmps;
3050
a3b680e6
AL
3051 while (*e)
3052 e++;
f2095865
JH
3053 numlen = e - s;
3054 flags = PERL_SCAN_SILENT_ILLDIGIT;
3055 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3056 if (s + numlen < e) {
3057 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3058 numlen = 0;
3059 s--;
3060 }
396482e1 3061 PL_rs = newSVpvs("");
c5661c80 3062 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3063 tmps = (U8*)SvPVX(PL_rs);
3064 uvchr_to_utf8(tmps, rschar);
3065 SvCUR_set(PL_rs, UNISKIP(rschar));
3066 SvUTF8_on(PL_rs);
3067 }
3068 else {
3069 numlen = 4;
3070 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3071 if (rschar & ~((U8)~0))
3072 PL_rs = &PL_sv_undef;
3073 else if (!rschar && numlen >= 2)
396482e1 3074 PL_rs = newSVpvs("");
f2095865
JH
3075 else {
3076 char ch = (char)rschar;
3077 PL_rs = newSVpvn(&ch, 1);
3078 }
3079 }
64ace3f8 3080 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3081 return s + numlen;
a863c7d1 3082 }
46487f74 3083 case 'C':
a05d7ebb 3084 s++;
dd374669 3085 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3086 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3087 PL_utf8cache = -1;
46487f74 3088 return s;
2304df62 3089 case 'F':
3280af22 3090 PL_minus_F = TRUE;
ebce5377
RGS
3091 PL_splitstr = ++s;
3092 while (*s && !isSPACE(*s)) ++s;
e49e380e 3093 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3094 return s;
79072805 3095 case 'a':
3280af22 3096 PL_minus_a = TRUE;
79072805
LW
3097 s++;
3098 return s;
3099 case 'c':
3280af22 3100 PL_minus_c = TRUE;
79072805
LW
3101 s++;
3102 return s;
3103 case 'd':
f20b2998 3104 forbid_setid('d', FALSE);
4633a7c4 3105 s++;
2cbb2ee1
RGS
3106
3107 /* -dt indicates to the debugger that threads will be used */
3108 if (*s == 't' && !isALNUM(s[1])) {
3109 ++s;
3110 my_setenv("PERL5DB_THREADED", "1");
3111 }
3112
70c94a19
RR
3113 /* The following permits -d:Mod to accepts arguments following an =
3114 in the fashion that -MSome::Mod does. */
3115 if (*s == ':' || *s == '=') {
b19934fb
NC
3116 const char *start;
3117 const char *end;
3118 SV *sv;
3119
3120 if (*++s == '-') {
3121 ++s;
3122 sv = newSVpvs("no Devel::");
3123 } else {
3124 sv = newSVpvs("use Devel::");
3125 }
3126
3127 start = s;
3128 end = s + strlen(s);
f85893a1 3129
b19934fb 3130 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3131 while(isALNUM(*s) || *s==':') ++s;
3132 if (*s != '=')
f85893a1 3133 sv_catpvn(sv, start, end - start);
70c94a19
RR
3134 else {
3135 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3136 /* Don't use NUL as q// delimiter here, this string goes in the
3137 * environment. */
3138 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3139 }
f85893a1 3140 s = end;
184f32ec 3141 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3142 SvREFCNT_dec(sv);
4633a7c4 3143 }
ed094faf 3144 if (!PL_perldb) {
3280af22 3145 PL_perldb = PERLDB_ALL;
a0d0e21e 3146 init_debugger();
ed094faf 3147 }
79072805
LW
3148 return s;
3149 case 'D':
0453d815 3150 {
79072805 3151#ifdef DEBUGGING
f20b2998 3152 forbid_setid('D', FALSE);
b4ab917c 3153 s++;
dd374669 3154 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3155#else /* !DEBUGGING */
0453d815 3156 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3157 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3158 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3159 for (s++; isALNUM(*s); s++) ;
79072805 3160#endif
79072805 3161 return s;
0453d815 3162 }
4633a7c4 3163 case 'h':
b6f82619 3164 usage();
79072805 3165 case 'i':
43c5f42d 3166 Safefree(PL_inplace);
c030f24b
GH
3167#if defined(__CYGWIN__) /* do backup extension automagically */
3168 if (*(s+1) == '\0') {
c86a4f2e 3169 PL_inplace = savepvs(".bak");
c030f24b
GH
3170 return s+1;
3171 }
3172#endif /* __CYGWIN__ */
5ef5d758 3173 {
d4c19fe8 3174 const char * const start = ++s;
5ef5d758
NC
3175 while (*s && !isSPACE(*s))
3176 ++s;
3177
3178 PL_inplace = savepvn(start, s - start);
3179 }
7b8d334a 3180 if (*s) {
5ef5d758 3181 ++s;
7b8d334a 3182 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3183 s++;
7b8d334a 3184 }
fb73857a 3185 return s;
4e49a025 3186 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3187 forbid_setid('I', FALSE);
fb73857a
PP
3188 ++s;
3189 while (*s && isSPACE(*s))
3190 ++s;
3191 if (*s) {
c7030b81 3192 const char *e, *p;
0df16ed7
GS
3193 p = s;
3194 /* ignore trailing spaces (possibly followed by other switches) */
3195 do {
3196 for (e = p; *e && !isSPACE(*e); e++) ;
3197 p = e;
3198 while (isSPACE(*p))
3199 p++;
3200 } while (*p && *p != '-');
55b4bc1c 3201 incpush(s, e-s,
e28f3139 3202 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3203 s = p;
3204 if (*s == '-')
3205 s++;
79072805
LW
3206 }
3207 else
a67e862a 3208 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3209 return s;
79072805 3210 case 'l':
3280af22 3211 PL_minus_l = TRUE;
79072805 3212 s++;
7889fe52
NIS
3213 if (PL_ors_sv) {
3214 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3215 PL_ors_sv = NULL;
7889fe52 3216 }
79072805 3217 if (isDIGIT(*s)) {
53305cf1 3218 I32 flags = 0;
a3b680e6 3219 STRLEN numlen;
396482e1 3220 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3221 numlen = 3 + (*s == '0');
3222 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3223 s += numlen;
3224 }
3225 else {
8bfdd7d9 3226 if (RsPARA(PL_rs)) {
396482e1 3227 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3228 }
3229 else {
8bfdd7d9 3230 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3231 }
79072805
LW
3232 }
3233 return s;
1a30305b 3234 case 'M':
f20b2998 3235 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3236 /* FALL THROUGH */
3237 case 'm':
f20b2998 3238 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3239 if (*++s) {
c7030b81 3240 const char *start;
b64cb68c 3241 const char *end;
11343788 3242 SV *sv;
e1ec3a88 3243 const char *use = "use ";
0544e6df 3244 bool colon = FALSE;
a5f75d66 3245 /* -M-foo == 'no foo' */
d0043bd1
NC
3246 /* Leading space on " no " is deliberate, to make both
3247 possibilities the same length. */
3248 if (*s == '-') { use = " no "; ++s; }
3249 sv = newSVpvn(use,4);
a5f75d66 3250 start = s;
1a30305b 3251 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3252 while(isALNUM(*s) || *s==':') {
3253 if( *s++ == ':' ) {
3254 if( *s == ':' )
3255 s++;
3256 else
3257 colon = TRUE;
3258 }
3259 }
3260 if (s == start)
3261 Perl_croak(aTHX_ "Module name required with -%c option",
3262 option);
3263 if (colon)
3264 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3265 "contains single ':'",
63da6837 3266 (int)(s - start), start, option);
b64cb68c 3267 end = s + strlen(s);
c07a80fd 3268 if (*s != '=') {
b64cb68c 3269 sv_catpvn(sv, start, end - start);
0544e6df 3270 if (option == 'm') {
c07a80fd 3271 if (*s != '\0')
cea2e8a9 3272 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3273 sv_catpvs( sv, " ()");
c07a80fd
PP
3274 }
3275 } else {
11343788 3276 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3277 /* Use NUL as q''-delimiter. */
3278 sv_catpvs(sv, " split(/,/,q\0");
3279 ++s;
3280 sv_catpvn(sv, s, end - s);
396482e1 3281 sv_catpvs(sv, "\0)");
c07a80fd 3282 }
b64cb68c 3283 s = end;
29a861e7 3284 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3285 }
3286 else
0544e6df 3287 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3288 return s;
79072805 3289 case 'n':
3280af22 3290 PL_minus_n = TRUE;
79072805
LW
3291 s++;
3292 return s;
3293 case 'p':
3280af22 3294 PL_minus_p = TRUE;
79072805
LW
3295 s++;
3296 return s;
3297 case 's':
f20b2998 3298 forbid_setid('s', FALSE);
3280af22 3299 PL_doswitches = TRUE;
79072805
LW
3300 s++;
3301 return s;
6537fe72 3302 case 't':
27a6968b 3303 case 'T':
6537fe72 3304 if (!PL_tainting)
27a6968b 3305 TOO_LATE_FOR(*s);
6537fe72 3306 s++;
463ee0b2 3307 return s;
79072805 3308 case 'u':
3280af22 3309 PL_do_undump = TRUE;
79072805
LW
3310 s++;
3311 return s;
3312 case 'U':
3280af22 3313 PL_unsafe = TRUE;
79072805
LW
3314 s++;
3315 return s;
3316 case 'v':
c4bc78d9
NC
3317 minus_v();
3318 case 'w':
3319 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3320 PL_dowarn |= G_WARN_ON;
3321 }
3322 s++;
3323 return s;
3324 case 'W':
3325 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3326 if (!specialWARN(PL_compiling.cop_warnings))
3327 PerlMemShared_free(PL_compiling.cop_warnings);
3328 PL_compiling.cop_warnings = pWARN_ALL ;
3329 s++;
3330 return s;
3331 case 'X':
3332 PL_dowarn = G_WARN_ALL_OFF;
3333 if (!specialWARN(PL_compiling.cop_warnings))
3334 PerlMemShared_free(PL_compiling.cop_warnings);
3335 PL_compiling.cop_warnings = pWARN_NONE ;
3336 s++;
3337 return s;
3338 case '*':
3339 case ' ':
3340 while( *s == ' ' )
3341 ++s;
3342 if (s[0] == '-') /* Additional switches on #! line. */
3343 return s+1;
3344 break;
3345 case '-':
3346 case 0:
3347#if defined(WIN32) || !defined(PERL_STRICT_CR)
3348 case '\r':
3349#endif
3350 case '\n':
3351 case '\t':
3352 break;
3353#ifdef ALTERNATE_SHEBANG
3354 case 'S': /* OS/2 needs -S on "extproc" line. */
3355 break;
3356#endif
4bb78d63
CB
3357 case 'e': case 'f': case 'x': case 'E':
3358#ifndef ALTERNATE_SHEBANG
3359 case 'S':
3360#endif
3361 case 'V':
c4bc78d9 3362 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3363 default:
3364 Perl_croak(aTHX_
3365 "Unrecognized switch: -%.1s (-h will show valid options)",s
3366 );
c4bc78d9
NC
3367 }
3368 return NULL;
3369}
3370
3371
3372STATIC void
3373S_minus_v(pTHX)
3374{
d7aa5382 3375 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3376 upg_version(PL_patchlevel, TRUE);
8e9464f1 3377#if !defined(DGUX)
46807d8e
YO
3378 {
3379 SV* level= vstringify(PL_patchlevel);
3380#ifdef PERL_PATCHNUM
23d483e2
NC
3381# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3382 SV *num = newSVpvs(PERL_PATCHNUM "*");
3383# else
3384 SV *num = newSVpvs(PERL_PATCHNUM);
3385# endif
46807d8e
YO
3386
3387 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3388 SvREFCNT_dec(level);
3389 level= num;
3390 } else {
d0a9311f 3391 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3392 SvREFCNT_dec(num);
3393 }
3394 #endif
3395 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3396 "\nThis is perl " STRINGIFY(PERL_REVISION)
3397 ", version " STRINGIFY(PERL_VERSION)
3398 ", subversion " STRINGIFY(PERL_SUBVERSION)
3399 " (%"SVf") built for " ARCHNAME, level
3400 );
46807d8e
YO
3401 SvREFCNT_dec(level);
3402 }
8e9464f1
JH
3403#else /* DGUX */
3404/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3405 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3406 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3407 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3408 PerlIO_printf(PerlIO_stdout(),
3409 Perl_form(aTHX_ " built under %s at %s %s\n",
3410 OSNAME, __DATE__, __TIME__));
3411 PerlIO_printf(PerlIO_stdout(),
3412 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3413 OSVERS));
8e9464f1 3414#endif /* !DGUX */
fb73857a
PP
3415#if defined(LOCAL_PATCH_COUNT)
3416 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3417 PerlIO_printf(PerlIO_stdout(),
3418 "\n(with %d registered patch%s, "
3419 "see perl -V for more detail)",
bb7a0f54 3420 LOCAL_PATCH_COUNT,
b0e47665 3421 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3422#endif
1a30305b 3423
b0e47665 3424 PerlIO_printf(PerlIO_stdout(),
fdfb76e4 3425 "\n\nCopyright 1987-2012, Larry Wall\n");
79072805 3426#ifdef MSDOS
b0e47665
GS
3427 PerlIO_printf(PerlIO_stdout(),
3428 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3429#endif
3430#ifdef DJGPP
b0e47665
GS
3431 PerlIO_printf(PerlIO_stdout(),
3432 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3433 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3434#endif
79072805 3435#ifdef OS2
b0e47665
GS
3436 PerlIO_printf(PerlIO_stdout(),
3437 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3438 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3439#endif
a3f9223b 3440#ifdef __BEOS__
b0e47665
GS
3441 PerlIO_printf(PerlIO_stdout(),
3442 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3443#endif
1d84e8df 3444#ifdef MPE
b0e47665 3445 PerlIO_printf(PerlIO_stdout(),
e583a879 3446 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3447#endif
9d116dd7 3448#ifdef OEMVS
b0e47665
GS
3449 PerlIO_printf(PerlIO_stdout(),
3450 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3451#endif
495c5fdc 3452#ifdef __VOS__
b0e47665 3453 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3454 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3455#endif
092bebab 3456#ifdef __OPEN_VM
b0e47665
GS
3457 PerlIO_printf(PerlIO_stdout(),
3458 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3459#endif
a1a0e61e 3460#ifdef POSIX_BC
b0e47665
GS
3461 PerlIO_printf(PerlIO_stdout(),
3462 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3463#endif
f83d2536 3464#ifdef EPOC
b0e47665 3465 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3466 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3467#endif
e1caacb4 3468#ifdef UNDER_CE
b475b3e6
JH
3469 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3470 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3471 wce_hitreturn();
3472#endif
a0fd4948 3473#ifdef __SYMBIAN32__
27da23d5
JH
3474 PerlIO_printf(PerlIO_stdout(),
3475 "Symbian port by Nokia, 2004-2005\n");
3476#endif
baed7233
DL
3477#ifdef BINARY_BUILD_NOTICE
3478 BINARY_BUILD_NOTICE;
3479#endif
b0e47665
GS
3480 PerlIO_printf(PerlIO_stdout(),
3481 "\n\
79072805 3482Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3483GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3484Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3485this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3486Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3487 my_exit(0);
79072805
LW
3488}
3489
3490/* compliments of Tom Christiansen */
3491
3492/* unexec() can be found in the Gnu emacs distribution */
ee580363 3493/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805 3494
25bbd826
CB
3495#ifdef VMS
3496#include <lib$routines.h>
3497#endif
3498
79072805 3499void
864dbfa3 3500Perl_my_unexec(pTHX)
79072805 3501{
b37c2d43 3502 PERL_UNUSED_CONTEXT;
79072805 3503#ifdef UNEXEC
b37c2d43
AL
3504 SV * prog = newSVpv(BIN_EXP, 0);
3505 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3506 int status = 1;
79072805
LW
3507 extern int etext;
3508
396482e1 3509 sv_catpvs(prog, "/perl");
396482e1 3510 sv_catpvs(file, ".perldump");
79072805 3511
ee580363
GS
3512 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3513 /* unexec prints msg to stderr in case of failure */
6ad3d225 3514 PerlProc_exit(status);
79072805 3515#else
a5f75d66 3516# ifdef VMS